From 7d885749b6de2c9a1168d566e2380207b9177108 Mon Sep 17 00:00:00 2001 From: Mark Salter Date: Fri, 25 Jul 2014 18:02:46 -0400 Subject: perf tools: Fix arm64 build error I'm seeing the following build error on arm64: In file included from util/event.c:3:0: util/event.h:95:17: error: 'PERF_REGS_MAX' undeclared here (not in a function) u64 cache_regs[PERF_REGS_MAX]; ^ This patch adds a PERF_REGS_MAX definition for arm64. Signed-off-by: Mark Salter Acked-by: Jean Pihet Cc: Ingo Molnar Cc: Jean Pihet Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1406325766-8085-1-git-send-email-msalter@redhat.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/arch/arm64/include/perf_regs.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'tools') diff --git a/tools/perf/arch/arm64/include/perf_regs.h b/tools/perf/arch/arm64/include/perf_regs.h index e9441b9..1d3f39c 100644 --- a/tools/perf/arch/arm64/include/perf_regs.h +++ b/tools/perf/arch/arm64/include/perf_regs.h @@ -6,6 +6,8 @@ #include #define PERF_REGS_MASK ((1ULL << PERF_REG_ARM64_MAX) - 1) +#define PERF_REGS_MAX PERF_REG_ARM64_MAX + #define PERF_REG_IP PERF_REG_ARM64_PC #define PERF_REG_SP PERF_REG_ARM64_SP -- cgit v1.1 From 5f1c4225f6bcb20cc004b271dc72b96d0da29e9e Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Mon, 28 Jul 2014 12:39:50 -0300 Subject: perf evlist: Don't run workload if not told to The perf_evlist__prepare_workload() method works by forking and then waiting on a fd that must be written to to allow the workload to be exec()ed. But if the tool calling it fails to, say, set up the events with which it wants to sample the workload for, it will not call perf_evlist__start_workload(), but even in this case the workload ended up running: [acme@zoo linux]$ trace /bin/echo workload ends up running, it should not... Couldn't mmap the events: Operation not permitted workload ends up running, it should not... [acme@zoo linux]$ So check if at least one byte was written before letting exec() be called. Now the expected behaviour: [acme@zoo linux]$ trace /bin/echo workload ends up running, it should not... Couldn't mmap the events: Operation not permitted [acme@zoo linux]$ Acked-by: Jiri Olsa Cc: Adrian Hunter Cc: David Ahern Cc: Don Zickus Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Mike Galbraith Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-oh1ixo8m74rf295a05gfjw8b@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/evlist.c | 20 ++++++++++++++++++-- 1 file changed, 18 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index 814e954..3b366c0 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -1061,6 +1061,8 @@ int perf_evlist__prepare_workload(struct perf_evlist *evlist, struct target *tar } if (!evlist->workload.pid) { + int ret; + if (pipe_output) dup2(2, 1); @@ -1078,8 +1080,22 @@ int perf_evlist__prepare_workload(struct perf_evlist *evlist, struct target *tar /* * Wait until the parent tells us to go. */ - if (read(go_pipe[0], &bf, 1) == -1) - perror("unable to read pipe"); + ret = read(go_pipe[0], &bf, 1); + /* + * The parent will ask for the execvp() to be performed by + * writing exactly one byte, in workload.cork_fd, usually via + * perf_evlist__start_workload(). + * + * For cancelling the workload without actuallin running it, + * the parent will just close workload.cork_fd, without writing + * anything, i.e. read will return zero and we just exit() + * here. + */ + if (ret != 1) { + if (ret == -1) + perror("unable to read pipe"); + exit(ret); + } execvp(argv[0], (char **)argv); -- cgit v1.1 From 972f393bc8870e236edbd2ea0150a8da85b709e2 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Tue, 29 Jul 2014 10:21:58 -0300 Subject: perf symbols: Make sure --symfs usage includes the path separator Minchan reported that perf failed to load vmlinux if --symfs argument doesn't end with '/' character. Fix it by making sure that the '/' path separator is used when composing pathnames with a --symfs provided directory name. Reported-by: Minchan Kim Cc: David Ahern Cc: Jiri Olsa Cc: Minchan Kim Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/n/tip-8n4s6b6zvsez5ktanw006125@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/annotate.c | 9 +++------ tools/perf/util/dso.c | 28 +++++++++++++--------------- tools/perf/util/symbol.c | 3 +-- tools/perf/util/symbol.h | 9 +++++++++ tools/perf/util/util.h | 16 ++++++++++++++++ 5 files changed, 42 insertions(+), 23 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c index 809b4c5..7745fec 100644 --- a/tools/perf/util/annotate.c +++ b/tools/perf/util/annotate.c @@ -899,10 +899,8 @@ int symbol__annotate(struct symbol *sym, struct map *map, size_t privsize) struct kcore_extract kce; bool delete_extract = false; - if (filename) { - snprintf(symfs_filename, sizeof(symfs_filename), "%s%s", - symbol_conf.symfs, filename); - } + if (filename) + symbol__join_symfs(symfs_filename, filename); if (filename == NULL) { if (dso->has_build_id) { @@ -922,8 +920,7 @@ fallback: * DSO is the same as when 'perf record' ran. */ filename = (char *)dso->long_name; - snprintf(symfs_filename, sizeof(symfs_filename), "%s%s", - symbol_conf.symfs, filename); + symbol__join_symfs(symfs_filename, filename); free_filename = false; } diff --git a/tools/perf/util/dso.c b/tools/perf/util/dso.c index 90d02c66..bdafd30 100644 --- a/tools/perf/util/dso.c +++ b/tools/perf/util/dso.c @@ -37,6 +37,7 @@ int dso__read_binary_type_filename(const struct dso *dso, { char build_id_hex[BUILD_ID_SIZE * 2 + 1]; int ret = 0; + size_t len; switch (type) { case DSO_BINARY_TYPE__DEBUGLINK: { @@ -60,26 +61,25 @@ int dso__read_binary_type_filename(const struct dso *dso, break; case DSO_BINARY_TYPE__FEDORA_DEBUGINFO: - snprintf(filename, size, "%s/usr/lib/debug%s.debug", - symbol_conf.symfs, dso->long_name); + len = __symbol__join_symfs(filename, size, "/usr/lib/debug"); + snprintf(filename + len, size - len, "%s.debug", dso->long_name); break; case DSO_BINARY_TYPE__UBUNTU_DEBUGINFO: - snprintf(filename, size, "%s/usr/lib/debug%s", - symbol_conf.symfs, dso->long_name); + len = __symbol__join_symfs(filename, size, "/usr/lib/debug"); + snprintf(filename + len, size - len, "%s", dso->long_name); break; case DSO_BINARY_TYPE__OPENEMBEDDED_DEBUGINFO: { const char *last_slash; - size_t len; size_t dir_size; last_slash = dso->long_name + dso->long_name_len; while (last_slash != dso->long_name && *last_slash != '/') last_slash--; - len = scnprintf(filename, size, "%s", symbol_conf.symfs); + len = __symbol__join_symfs(filename, size, ""); dir_size = last_slash - dso->long_name + 2; if (dir_size > (size - len)) { ret = -1; @@ -100,26 +100,24 @@ int dso__read_binary_type_filename(const struct dso *dso, build_id__sprintf(dso->build_id, sizeof(dso->build_id), build_id_hex); - snprintf(filename, size, - "%s/usr/lib/debug/.build-id/%.2s/%s.debug", - symbol_conf.symfs, build_id_hex, build_id_hex + 2); + len = __symbol__join_symfs(filename, size, "/usr/lib/debug/.build-id/"); + snprintf(filename + len, size - len, "%.2s/%s.debug", + build_id_hex, build_id_hex + 2); break; case DSO_BINARY_TYPE__VMLINUX: case DSO_BINARY_TYPE__GUEST_VMLINUX: case DSO_BINARY_TYPE__SYSTEM_PATH_DSO: - snprintf(filename, size, "%s%s", - symbol_conf.symfs, dso->long_name); + __symbol__join_symfs(filename, size, dso->long_name); break; case DSO_BINARY_TYPE__GUEST_KMODULE: - snprintf(filename, size, "%s%s%s", symbol_conf.symfs, - root_dir, dso->long_name); + path__join3(filename, size, symbol_conf.symfs, + root_dir, dso->long_name); break; case DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE: - snprintf(filename, size, "%s%s", symbol_conf.symfs, - dso->long_name); + __symbol__join_symfs(filename, size, dso->long_name); break; case DSO_BINARY_TYPE__KCORE: diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c index eb06746..f134ec1 100644 --- a/tools/perf/util/symbol.c +++ b/tools/perf/util/symbol.c @@ -1468,8 +1468,7 @@ int dso__load_vmlinux(struct dso *dso, struct map *map, if (vmlinux[0] == '/') snprintf(symfs_vmlinux, sizeof(symfs_vmlinux), "%s", vmlinux); else - snprintf(symfs_vmlinux, sizeof(symfs_vmlinux), "%s%s", - symbol_conf.symfs, vmlinux); + symbol__join_symfs(symfs_vmlinux, vmlinux); if (dso->kernel == DSO_TYPE_GUEST_KERNEL) symtab_type = DSO_BINARY_TYPE__GUEST_VMLINUX; diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h index e7295e9..196b291 100644 --- a/tools/perf/util/symbol.h +++ b/tools/perf/util/symbol.h @@ -13,6 +13,7 @@ #include #include "build-id.h" #include "event.h" +#include "util.h" #ifdef HAVE_LIBELF_SUPPORT #include @@ -143,6 +144,14 @@ struct symbol_conf { }; extern struct symbol_conf symbol_conf; + +static inline int __symbol__join_symfs(char *bf, size_t size, const char *path) +{ + return path__join(bf, size, symbol_conf.symfs, path); +} + +#define symbol__join_symfs(bf, path) __symbol__join_symfs(bf, sizeof(bf), path) + extern int vmlinux_path__nr_entries; extern char **vmlinux_path; diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h index 6686436..38af775 100644 --- a/tools/perf/util/util.h +++ b/tools/perf/util/util.h @@ -68,6 +68,7 @@ #include #include #include +#include #include #include #include @@ -317,6 +318,21 @@ unsigned long parse_tag_value(const char *str, struct parse_tag *tags); #define SRCLINE_UNKNOWN ((char *) "??:0") +static inline int path__join(char *bf, size_t size, + const char *path1, const char *path2) +{ + return scnprintf(bf, size, "%s%s%s", path1, path1[0] ? "/" : "", path2); +} + +static inline int path__join3(char *bf, size_t size, + const char *path1, const char *path2, + const char *path3) +{ + return scnprintf(bf, size, "%s%s%s%s%s", + path1, path1[0] ? "/" : "", + path2, path2[0] ? "/" : "", path3); +} + struct dso; char *get_srcline(struct dso *dso, unsigned long addr); -- cgit v1.1 From b048a24cc8f29dce1bad564aaeb8680020d3701c Mon Sep 17 00:00:00 2001 From: Christian Borntraeger Date: Thu, 31 Jul 2014 13:13:51 +0200 Subject: perf kvm stat: Properly show submicrosecond times For lots of exits the min time (and sometimes max) is 0 or 1. Lets increase the accurancy similar to what the average field alread does. Signed-off-by: Christian Borntraeger Acked-by: David Ahern Cc: David Ahern Cc: Jiri Olsa Cc: Paolo Bonzini Cc: kvm@vger.kernel.org Link: http://lkml.kernel.org/r/1406805231-10675-2-git-send-email-borntraeger@de.ibm.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-kvm.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c index 43367eb..fe92dfd 100644 --- a/tools/perf/builtin-kvm.c +++ b/tools/perf/builtin-kvm.c @@ -592,8 +592,8 @@ static void print_result(struct perf_kvm_stat *kvm) pr_info("%9s ", "Samples%"); pr_info("%9s ", "Time%"); - pr_info("%10s ", "Min Time"); - pr_info("%10s ", "Max Time"); + pr_info("%11s ", "Min Time"); + pr_info("%11s ", "Max Time"); pr_info("%16s ", "Avg time"); pr_info("\n\n"); @@ -610,8 +610,8 @@ static void print_result(struct perf_kvm_stat *kvm) pr_info("%10llu ", (unsigned long long)ecount); pr_info("%8.2f%% ", (double)ecount / kvm->total_count * 100); pr_info("%8.2f%% ", (double)etime / kvm->total_time * 100); - pr_info("%8" PRIu64 "us ", min / 1000); - pr_info("%8" PRIu64 "us ", max / 1000); + pr_info("%9.2fus ", (double)min / 1e3); + pr_info("%9.2fus ", (double)max / 1e3); pr_info("%9.2fus ( +-%7.2f%% )", (double)etime / ecount/1e3, kvm_event_rel_stddev(vcpu, event)); pr_info("\n"); -- cgit v1.1 From 8affc2b8c27bfc2d6e70827b746f490b62c44eaa Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Thu, 31 Jul 2014 14:45:04 +0800 Subject: perf record: Honour --no-time command line option Time stamps are always implicitely enabled for record currently. The old --time/-T option is a nop. Allow the user to disable timestamps by using --no-time, honouring the existing option. The defaults are unchanged. Signed-off-by: Andi Kleen Cc: Andi Kleen Cc: Ingo Molnar Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1406789104-25863-10-git-send-email-zheng.z.yan@intel.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-record.c | 1 + tools/perf/util/evsel.c | 9 ++++++--- 2 files changed, 7 insertions(+), 3 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index 4869050..ca0251e 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -781,6 +781,7 @@ static const char * const record_usage[] = { */ static struct record record = { .opts = { + .sample_time = true, .mmap_pages = UINT_MAX, .user_freq = UINT_MAX, .user_interval = ULLONG_MAX, diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index 21a373e..92e5235 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -633,9 +633,12 @@ void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts) if (opts->period) perf_evsel__set_sample_bit(evsel, PERIOD); - if (!perf_missing_features.sample_id_all && - (opts->sample_time || !opts->no_inherit || - target__has_cpu(&opts->target) || per_cpu)) + /* + * When the user explicitely disabled time don't force it here. + */ + if (opts->sample_time && + (!perf_missing_features.sample_id_all && + (!opts->no_inherit || target__has_cpu(&opts->target) || per_cpu))) perf_evsel__set_sample_bit(evsel, TIME); if (opts->raw_samples && !evsel->no_aux_samples) { -- cgit v1.1 From 0a8cb85c200c4082ed7e57efd90dd9d18c8d40b6 Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Sun, 6 Jul 2014 14:18:21 +0200 Subject: perf tools: Rename ordered_samples bool to ordered_events The time ordering is generic for all kinds of events, so using generic name 'ordered_events' for ordered_samples bool in perf_tool struct. No functional change was intended. Signed-off-by: Jiri Olsa Acked-by: David Ahern Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jean Pihet Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/n/tip-07mrqzcuhsks9wfmxrzsvemz@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-annotate.c | 2 +- tools/perf/builtin-diff.c | 2 +- tools/perf/builtin-inject.c | 2 +- tools/perf/builtin-kmem.c | 2 +- tools/perf/builtin-kvm.c | 4 ++-- tools/perf/builtin-lock.c | 2 +- tools/perf/builtin-mem.c | 2 +- tools/perf/builtin-report.c | 2 +- tools/perf/builtin-sched.c | 2 +- tools/perf/builtin-script.c | 2 +- tools/perf/builtin-timechart.c | 2 +- tools/perf/builtin-trace.c | 2 +- tools/perf/util/session.c | 10 +++++----- tools/perf/util/tool.h | 2 +- 14 files changed, 19 insertions(+), 19 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c index 1ec429f..952b5ec 100644 --- a/tools/perf/builtin-annotate.c +++ b/tools/perf/builtin-annotate.c @@ -297,7 +297,7 @@ int cmd_annotate(int argc, const char **argv, const char *prefix __maybe_unused) .comm = perf_event__process_comm, .exit = perf_event__process_exit, .fork = perf_event__process_fork, - .ordered_samples = true, + .ordered_events = true, .ordering_requires_timestamps = true, }, }; diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c index 9a5a035..c10cc44 100644 --- a/tools/perf/builtin-diff.c +++ b/tools/perf/builtin-diff.c @@ -360,7 +360,7 @@ static struct perf_tool tool = { .exit = perf_event__process_exit, .fork = perf_event__process_fork, .lost = perf_event__process_lost, - .ordered_samples = true, + .ordered_events = true, .ordering_requires_timestamps = true, }; diff --git a/tools/perf/builtin-inject.c b/tools/perf/builtin-inject.c index 9a02807..ee875cc 100644 --- a/tools/perf/builtin-inject.c +++ b/tools/perf/builtin-inject.c @@ -366,7 +366,7 @@ static int __cmd_inject(struct perf_inject *inject) } else if (inject->sched_stat) { struct perf_evsel *evsel; - inject->tool.ordered_samples = true; + inject->tool.ordered_events = true; evlist__for_each(session->evlist, evsel) { const char *name = perf_evsel__name(evsel); diff --git a/tools/perf/builtin-kmem.c b/tools/perf/builtin-kmem.c index bef3376..b572111 100644 --- a/tools/perf/builtin-kmem.c +++ b/tools/perf/builtin-kmem.c @@ -256,7 +256,7 @@ static int process_sample_event(struct perf_tool *tool __maybe_unused, static struct perf_tool perf_kmem = { .sample = process_sample_event, .comm = perf_event__process_comm, - .ordered_samples = true, + .ordered_events = true, }; static double fragmentation(unsigned long n_req, unsigned long n_alloc) diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c index fe92dfd..a05f435 100644 --- a/tools/perf/builtin-kvm.c +++ b/tools/perf/builtin-kvm.c @@ -1058,7 +1058,7 @@ static int read_events(struct perf_kvm_stat *kvm) struct perf_tool eops = { .sample = process_sample_event, .comm = perf_event__process_comm, - .ordered_samples = true, + .ordered_events = true, }; struct perf_data_file file = { .path = kvm->file_name, @@ -1311,7 +1311,7 @@ static int kvm_events_live(struct perf_kvm_stat *kvm, kvm->tool.exit = perf_event__process_exit; kvm->tool.fork = perf_event__process_fork; kvm->tool.lost = process_lost_event; - kvm->tool.ordered_samples = true; + kvm->tool.ordered_events = true; perf_tool__fill_defaults(&kvm->tool); /* set defaults */ diff --git a/tools/perf/builtin-lock.c b/tools/perf/builtin-lock.c index 6148afc..c8122d3 100644 --- a/tools/perf/builtin-lock.c +++ b/tools/perf/builtin-lock.c @@ -852,7 +852,7 @@ static int __cmd_report(bool display_info) struct perf_tool eops = { .sample = process_sample_event, .comm = perf_event__process_comm, - .ordered_samples = true, + .ordered_events = true, }; struct perf_data_file file = { .path = input_name, diff --git a/tools/perf/builtin-mem.c b/tools/perf/builtin-mem.c index 4a1a6c9..80e57c8 100644 --- a/tools/perf/builtin-mem.c +++ b/tools/perf/builtin-mem.c @@ -194,7 +194,7 @@ int cmd_mem(int argc, const char **argv, const char *prefix __maybe_unused) .lost = perf_event__process_lost, .fork = perf_event__process_fork, .build_id = perf_event__process_build_id, - .ordered_samples = true, + .ordered_events = true, }, .input_name = "perf.data", }; diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index 21d830b..c72cc5a 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -578,7 +578,7 @@ int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused) .attr = perf_event__process_attr, .tracing_data = perf_event__process_tracing_data, .build_id = perf_event__process_build_id, - .ordered_samples = true, + .ordered_events = true, .ordering_requires_timestamps = true, }, .max_stack = PERF_MAX_STACK_DEPTH, diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c index f83c08c..7c16aeb 100644 --- a/tools/perf/builtin-sched.c +++ b/tools/perf/builtin-sched.c @@ -1662,7 +1662,7 @@ int cmd_sched(int argc, const char **argv, const char *prefix __maybe_unused) .comm = perf_event__process_comm, .lost = perf_event__process_lost, .fork = perf_sched__process_fork_event, - .ordered_samples = true, + .ordered_events = true, }, .cmp_pid = LIST_HEAD_INIT(sched.cmp_pid), .sort_list = LIST_HEAD_INIT(sched.sort_list), diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c index f57035b..868c17d 100644 --- a/tools/perf/builtin-script.c +++ b/tools/perf/builtin-script.c @@ -1488,7 +1488,7 @@ int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused) .attr = process_attr, .tracing_data = perf_event__process_tracing_data, .build_id = perf_event__process_build_id, - .ordered_samples = true, + .ordered_events = true, .ordering_requires_timestamps = true, }, }; diff --git a/tools/perf/builtin-timechart.c b/tools/perf/builtin-timechart.c index 2f1a522..912e3b5 100644 --- a/tools/perf/builtin-timechart.c +++ b/tools/perf/builtin-timechart.c @@ -1920,7 +1920,7 @@ int cmd_timechart(int argc, const char **argv, .fork = process_fork_event, .exit = process_exit_event, .sample = process_sample_event, - .ordered_samples = true, + .ordered_events = true, }, .proc_num = 15, .min_time = 1000000, diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index a6c3752..36ae51d 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -2209,7 +2209,7 @@ static int trace__replay(struct trace *trace) trace->tool.tracing_data = perf_event__process_tracing_data; trace->tool.build_id = perf_event__process_build_id; - trace->tool.ordered_samples = true; + trace->tool.ordered_events = true; trace->tool.ordering_requires_timestamps = true; /* add tid to output */ diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index 88dfef7..a2c97ff 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -104,9 +104,9 @@ struct perf_session *perf_session__new(struct perf_data_file *file, } if (tool && tool->ordering_requires_timestamps && - tool->ordered_samples && !perf_evlist__sample_id_all(session->evlist)) { + tool->ordered_events && !perf_evlist__sample_id_all(session->evlist)) { dump_printf("WARNING: No sample_id_all support, falling back to unordered processing\n"); - tool->ordered_samples = false; + tool->ordered_events = false; } return session; @@ -238,7 +238,7 @@ void perf_tool__fill_defaults(struct perf_tool *tool) if (tool->build_id == NULL) tool->build_id = process_finished_round_stub; if (tool->finished_round == NULL) { - if (tool->ordered_samples) + if (tool->ordered_events) tool->finished_round = process_finished_round; else tool->finished_round = process_finished_round_stub; @@ -483,7 +483,7 @@ static int flush_sample_queue(struct perf_session *s, struct ui_progress prog; int ret; - if (!tool->ordered_samples || !limit) + if (!tool->ordered_events || !limit) return 0; if (show_progress) @@ -1062,7 +1062,7 @@ static s64 perf_session__process_event(struct perf_session *session, if (ret) return ret; - if (tool->ordered_samples) { + if (tool->ordered_events) { ret = perf_session_queue_event(session, event, &sample, file_offset); if (ret != -ETIME) diff --git a/tools/perf/util/tool.h b/tools/perf/util/tool.h index 4385816..f116369 100644 --- a/tools/perf/util/tool.h +++ b/tools/perf/util/tool.h @@ -40,7 +40,7 @@ struct perf_tool { event_op2 tracing_data; event_op2 finished_round, build_id; - bool ordered_samples; + bool ordered_events; bool ordering_requires_timestamps; }; -- cgit v1.1 From 37e39aa8a8a42ad2fd72b7c7349115dad8297d9c Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Sun, 6 Jul 2014 14:23:03 +0200 Subject: perf tools: Rename ordered_samples struct to ordered_events Following up with ordered_samples rename for ordered_samples and sample_queue structs to ordered_events and ordered_event structs respectively. Also changing flush_sample_queue function name to ordered_events_flush. No functional change was intended. Signed-off-by: Jiri Olsa Acked-by: David Ahern Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jean Pihet Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/n/tip-2dkrdvh0bbmzxdse437fcgls@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-kvm.c | 2 +- tools/perf/util/session.c | 118 +++++++++++++++++++++++----------------------- tools/perf/util/session.h | 10 ++-- 3 files changed, 65 insertions(+), 65 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c index a05f435..258a527 100644 --- a/tools/perf/builtin-kvm.c +++ b/tools/perf/builtin-kvm.c @@ -785,7 +785,7 @@ static int perf_kvm__mmap_read(struct perf_kvm_stat *kvm) /* flush queue after each round in which we processed events */ if (ntotal) { - kvm->session->ordered_samples.next_flush = flush_time; + kvm->session->ordered_events.next_flush = flush_time; err = kvm->tool.finished_round(&kvm->tool, NULL, kvm->session); if (err) { if (kvm->lost_events) diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index a2c97ff..6570282 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -75,9 +75,9 @@ struct perf_session *perf_session__new(struct perf_data_file *file, goto out; session->repipe = repipe; - INIT_LIST_HEAD(&session->ordered_samples.samples); - INIT_LIST_HEAD(&session->ordered_samples.sample_cache); - INIT_LIST_HEAD(&session->ordered_samples.to_free); + INIT_LIST_HEAD(&session->ordered_events.samples); + INIT_LIST_HEAD(&session->ordered_events.sample_cache); + INIT_LIST_HEAD(&session->ordered_events.to_free); machines__init(&session->machines); if (file) { @@ -444,7 +444,7 @@ static perf_event__swap_op perf_event__swap_ops[] = { [PERF_RECORD_HEADER_MAX] = NULL, }; -struct sample_queue { +struct ordered_event { u64 timestamp; u64 file_offset; union perf_event *event; @@ -453,14 +453,14 @@ struct sample_queue { static void perf_session_free_sample_buffers(struct perf_session *session) { - struct ordered_samples *os = &session->ordered_samples; + struct ordered_events *oe = &session->ordered_events; - while (!list_empty(&os->to_free)) { - struct sample_queue *sq; + while (!list_empty(&oe->to_free)) { + struct ordered_event *event; - sq = list_entry(os->to_free.next, struct sample_queue, list); - list_del(&sq->list); - free(sq); + event = list_entry(oe->to_free.next, struct ordered_event, list); + list_del(&event->list); + free(event); } } @@ -470,15 +470,15 @@ static int perf_session_deliver_event(struct perf_session *session, struct perf_tool *tool, u64 file_offset); -static int flush_sample_queue(struct perf_session *s, - struct perf_tool *tool) +static int ordered_events__flush(struct perf_session *s, + struct perf_tool *tool) { - struct ordered_samples *os = &s->ordered_samples; - struct list_head *head = &os->samples; - struct sample_queue *tmp, *iter; + struct ordered_events *oe = &s->ordered_events; + struct list_head *head = &oe->samples; + struct ordered_event *tmp, *iter; struct perf_sample sample; - u64 limit = os->next_flush; - u64 last_ts = os->last_sample ? os->last_sample->timestamp : 0ULL; + u64 limit = oe->next_flush; + u64 last_ts = oe->last_sample ? oe->last_sample->timestamp : 0ULL; bool show_progress = limit == ULLONG_MAX; struct ui_progress prog; int ret; @@ -487,7 +487,7 @@ static int flush_sample_queue(struct perf_session *s, return 0; if (show_progress) - ui_progress__init(&prog, os->nr_samples, "Processing time ordered events..."); + ui_progress__init(&prog, oe->nr_samples, "Processing time ordered events..."); list_for_each_entry_safe(iter, tmp, head, list) { if (session_done()) @@ -506,20 +506,20 @@ static int flush_sample_queue(struct perf_session *s, return ret; } - os->last_flush = iter->timestamp; + oe->last_flush = iter->timestamp; list_del(&iter->list); - list_add(&iter->list, &os->sample_cache); - os->nr_samples--; + list_add(&iter->list, &oe->sample_cache); + oe->nr_samples--; if (show_progress) ui_progress__update(&prog, 1); } if (list_empty(head)) { - os->last_sample = NULL; + oe->last_sample = NULL; } else if (last_ts <= limit) { - os->last_sample = - list_entry(head->prev, struct sample_queue, list); + oe->last_sample = + list_entry(head->prev, struct ordered_event, list); } return 0; @@ -568,27 +568,27 @@ static int process_finished_round(struct perf_tool *tool, union perf_event *event __maybe_unused, struct perf_session *session) { - int ret = flush_sample_queue(session, tool); + int ret = ordered_events__flush(session, tool); if (!ret) - session->ordered_samples.next_flush = session->ordered_samples.max_timestamp; + session->ordered_events.next_flush = session->ordered_events.max_timestamp; return ret; } /* The queue is ordered by time */ -static void __queue_event(struct sample_queue *new, struct perf_session *s) +static void __queue_event(struct ordered_event *new, struct perf_session *s) { - struct ordered_samples *os = &s->ordered_samples; - struct sample_queue *sample = os->last_sample; + struct ordered_events *oe = &s->ordered_events; + struct ordered_event *sample = oe->last_sample; u64 timestamp = new->timestamp; struct list_head *p; - ++os->nr_samples; - os->last_sample = new; + ++oe->nr_samples; + oe->last_sample = new; if (!sample) { - list_add(&new->list, &os->samples); - os->max_timestamp = timestamp; + list_add(&new->list, &oe->samples); + oe->max_timestamp = timestamp; return; } @@ -600,59 +600,59 @@ static void __queue_event(struct sample_queue *new, struct perf_session *s) if (sample->timestamp <= timestamp) { while (sample->timestamp <= timestamp) { p = sample->list.next; - if (p == &os->samples) { - list_add_tail(&new->list, &os->samples); - os->max_timestamp = timestamp; + if (p == &oe->samples) { + list_add_tail(&new->list, &oe->samples); + oe->max_timestamp = timestamp; return; } - sample = list_entry(p, struct sample_queue, list); + sample = list_entry(p, struct ordered_event, list); } list_add_tail(&new->list, &sample->list); } else { while (sample->timestamp > timestamp) { p = sample->list.prev; - if (p == &os->samples) { - list_add(&new->list, &os->samples); + if (p == &oe->samples) { + list_add(&new->list, &oe->samples); return; } - sample = list_entry(p, struct sample_queue, list); + sample = list_entry(p, struct ordered_event, list); } list_add(&new->list, &sample->list); } } -#define MAX_SAMPLE_BUFFER (64 * 1024 / sizeof(struct sample_queue)) +#define MAX_SAMPLE_BUFFER (64 * 1024 / sizeof(struct ordered_event)) int perf_session_queue_event(struct perf_session *s, union perf_event *event, struct perf_sample *sample, u64 file_offset) { - struct ordered_samples *os = &s->ordered_samples; - struct list_head *sc = &os->sample_cache; + struct ordered_events *oe = &s->ordered_events; + struct list_head *sc = &oe->sample_cache; u64 timestamp = sample->time; - struct sample_queue *new; + struct ordered_event *new; if (!timestamp || timestamp == ~0ULL) return -ETIME; - if (timestamp < s->ordered_samples.last_flush) { + if (timestamp < s->ordered_events.last_flush) { printf("Warning: Timestamp below last timeslice flush\n"); return -EINVAL; } if (!list_empty(sc)) { - new = list_entry(sc->next, struct sample_queue, list); + new = list_entry(sc->next, struct ordered_event, list); list_del(&new->list); - } else if (os->sample_buffer) { - new = os->sample_buffer + os->sample_buffer_idx; - if (++os->sample_buffer_idx == MAX_SAMPLE_BUFFER) - os->sample_buffer = NULL; + } else if (oe->sample_buffer) { + new = oe->sample_buffer + oe->sample_buffer_idx; + if (++oe->sample_buffer_idx == MAX_SAMPLE_BUFFER) + oe->sample_buffer = NULL; } else { - os->sample_buffer = malloc(MAX_SAMPLE_BUFFER * sizeof(*new)); - if (!os->sample_buffer) + oe->sample_buffer = malloc(MAX_SAMPLE_BUFFER * sizeof(*new)); + if (!oe->sample_buffer) return -ENOMEM; - list_add(&os->sample_buffer->list, &os->to_free); - os->sample_buffer_idx = 2; - new = os->sample_buffer + 1; + list_add(&oe->sample_buffer->list, &oe->to_free); + oe->sample_buffer_idx = 2; + new = oe->sample_buffer + 1; } new->timestamp = timestamp; @@ -1222,8 +1222,8 @@ more: goto more; done: /* do the final flush for ordered samples */ - session->ordered_samples.next_flush = ULLONG_MAX; - err = flush_sample_queue(session, tool); + session->ordered_events.next_flush = ULLONG_MAX; + err = ordered_events__flush(session, tool); out_err: free(buf); perf_session__warn_about_errors(session, tool); @@ -1368,8 +1368,8 @@ more: out: /* do the final flush for ordered samples */ - session->ordered_samples.next_flush = ULLONG_MAX; - err = flush_sample_queue(session, tool); + session->ordered_events.next_flush = ULLONG_MAX; + err = ordered_events__flush(session, tool); out_err: ui_progress__finish(); perf_session__warn_about_errors(session, tool); diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h index 0321013..f6baf93 100644 --- a/tools/perf/util/session.h +++ b/tools/perf/util/session.h @@ -12,19 +12,19 @@ #include #include -struct sample_queue; +struct ordered_event; struct ip_callchain; struct thread; -struct ordered_samples { +struct ordered_events { u64 last_flush; u64 next_flush; u64 max_timestamp; struct list_head samples; struct list_head sample_cache; struct list_head to_free; - struct sample_queue *sample_buffer; - struct sample_queue *last_sample; + struct ordered_event *sample_buffer; + struct ordered_event *last_sample; int sample_buffer_idx; unsigned int nr_samples; }; @@ -39,7 +39,7 @@ struct perf_session { bool one_mmap; void *one_mmap_addr; u64 one_mmap_offset; - struct ordered_samples ordered_samples; + struct ordered_events ordered_events; struct perf_data_file *file; }; -- cgit v1.1 From fc12482f4f7ae5c6fca13922a1e0898ff9002aa6 Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Mon, 9 Jun 2014 23:11:30 +0200 Subject: perf tools: Rename ordered_events members Rename 'struct ordered_events' members to fit better the ordered events style. No functional change was intended. Signed-off-by: Jiri Olsa Acked-by: David Ahern Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jean Pihet Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/n/tip-v0eb2hsmrxbolnoawu5fn92z@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/session.c | 86 +++++++++++++++++++++++------------------------ tools/perf/util/session.h | 12 +++---- 2 files changed, 48 insertions(+), 50 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index 6570282..619778e 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -75,8 +75,8 @@ struct perf_session *perf_session__new(struct perf_data_file *file, goto out; session->repipe = repipe; - INIT_LIST_HEAD(&session->ordered_events.samples); - INIT_LIST_HEAD(&session->ordered_events.sample_cache); + INIT_LIST_HEAD(&session->ordered_events.events); + INIT_LIST_HEAD(&session->ordered_events.cache); INIT_LIST_HEAD(&session->ordered_events.to_free); machines__init(&session->machines); @@ -474,11 +474,11 @@ static int ordered_events__flush(struct perf_session *s, struct perf_tool *tool) { struct ordered_events *oe = &s->ordered_events; - struct list_head *head = &oe->samples; + struct list_head *head = &oe->events; struct ordered_event *tmp, *iter; struct perf_sample sample; u64 limit = oe->next_flush; - u64 last_ts = oe->last_sample ? oe->last_sample->timestamp : 0ULL; + u64 last_ts = oe->last ? oe->last->timestamp : 0ULL; bool show_progress = limit == ULLONG_MAX; struct ui_progress prog; int ret; @@ -487,7 +487,7 @@ static int ordered_events__flush(struct perf_session *s, return 0; if (show_progress) - ui_progress__init(&prog, oe->nr_samples, "Processing time ordered events..."); + ui_progress__init(&prog, oe->nr_events, "Processing time ordered events..."); list_for_each_entry_safe(iter, tmp, head, list) { if (session_done()) @@ -508,19 +508,17 @@ static int ordered_events__flush(struct perf_session *s, oe->last_flush = iter->timestamp; list_del(&iter->list); - list_add(&iter->list, &oe->sample_cache); - oe->nr_samples--; + list_add(&iter->list, &oe->cache); + oe->nr_events--; if (show_progress) ui_progress__update(&prog, 1); } - if (list_empty(head)) { - oe->last_sample = NULL; - } else if (last_ts <= limit) { - oe->last_sample = - list_entry(head->prev, struct ordered_event, list); - } + if (list_empty(head)) + oe->last = NULL; + else if (last_ts <= limit) + oe->last = list_entry(head->prev, struct ordered_event, list); return 0; } @@ -579,45 +577,45 @@ static int process_finished_round(struct perf_tool *tool, static void __queue_event(struct ordered_event *new, struct perf_session *s) { struct ordered_events *oe = &s->ordered_events; - struct ordered_event *sample = oe->last_sample; + struct ordered_event *last = oe->last; u64 timestamp = new->timestamp; struct list_head *p; - ++oe->nr_samples; - oe->last_sample = new; + ++oe->nr_events; + oe->last = new; - if (!sample) { - list_add(&new->list, &oe->samples); + if (!last) { + list_add(&new->list, &oe->events); oe->max_timestamp = timestamp; return; } /* - * last_sample might point to some random place in the list as it's + * last event might point to some random place in the list as it's * the last queued event. We expect that the new event is close to * this. */ - if (sample->timestamp <= timestamp) { - while (sample->timestamp <= timestamp) { - p = sample->list.next; - if (p == &oe->samples) { - list_add_tail(&new->list, &oe->samples); + if (last->timestamp <= timestamp) { + while (last->timestamp <= timestamp) { + p = last->list.next; + if (p == &oe->events) { + list_add_tail(&new->list, &oe->events); oe->max_timestamp = timestamp; return; } - sample = list_entry(p, struct ordered_event, list); + last = list_entry(p, struct ordered_event, list); } - list_add_tail(&new->list, &sample->list); + list_add_tail(&new->list, &last->list); } else { - while (sample->timestamp > timestamp) { - p = sample->list.prev; - if (p == &oe->samples) { - list_add(&new->list, &oe->samples); + while (last->timestamp > timestamp) { + p = last->list.prev; + if (p == &oe->events) { + list_add(&new->list, &oe->events); return; } - sample = list_entry(p, struct ordered_event, list); + last = list_entry(p, struct ordered_event, list); } - list_add(&new->list, &sample->list); + list_add(&new->list, &last->list); } } @@ -627,7 +625,7 @@ int perf_session_queue_event(struct perf_session *s, union perf_event *event, struct perf_sample *sample, u64 file_offset) { struct ordered_events *oe = &s->ordered_events; - struct list_head *sc = &oe->sample_cache; + struct list_head *cache = &oe->cache; u64 timestamp = sample->time; struct ordered_event *new; @@ -639,20 +637,20 @@ int perf_session_queue_event(struct perf_session *s, union perf_event *event, return -EINVAL; } - if (!list_empty(sc)) { - new = list_entry(sc->next, struct ordered_event, list); + if (!list_empty(cache)) { + new = list_entry(cache->next, struct ordered_event, list); list_del(&new->list); - } else if (oe->sample_buffer) { - new = oe->sample_buffer + oe->sample_buffer_idx; - if (++oe->sample_buffer_idx == MAX_SAMPLE_BUFFER) - oe->sample_buffer = NULL; + } else if (oe->buffer) { + new = oe->buffer + oe->buffer_idx; + if (++oe->buffer_idx == MAX_SAMPLE_BUFFER) + oe->buffer = NULL; } else { - oe->sample_buffer = malloc(MAX_SAMPLE_BUFFER * sizeof(*new)); - if (!oe->sample_buffer) + oe->buffer = malloc(MAX_SAMPLE_BUFFER * sizeof(*new)); + if (!oe->buffer) return -ENOMEM; - list_add(&oe->sample_buffer->list, &oe->to_free); - oe->sample_buffer_idx = 2; - new = oe->sample_buffer + 1; + list_add(&oe->buffer->list, &oe->to_free); + oe->buffer_idx = 2; + new = oe->buffer + 1; } new->timestamp = timestamp; diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h index f6baf93..419eb50 100644 --- a/tools/perf/util/session.h +++ b/tools/perf/util/session.h @@ -20,13 +20,13 @@ struct ordered_events { u64 last_flush; u64 next_flush; u64 max_timestamp; - struct list_head samples; - struct list_head sample_cache; + struct list_head events; + struct list_head cache; struct list_head to_free; - struct ordered_event *sample_buffer; - struct ordered_event *last_sample; - int sample_buffer_idx; - unsigned int nr_samples; + struct ordered_event *buffer; + struct ordered_event *last; + int buffer_idx; + unsigned int nr_events; }; struct perf_session { -- cgit v1.1 From c64c7e1a5addf93b7dec98a27b8c48457506aa06 Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Tue, 10 Jun 2014 21:58:02 +0200 Subject: perf tools: Add ordered_events__(new|delete) interface Adding new ordered events interface to new|delete event buffer: ordered_events__new - allocate event buffer from the cache ordered_events__delete - return event buffer to the cache Signed-off-by: Jiri Olsa Acked-by: David Ahern Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jean Pihet Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/n/tip-srwunsy7o5wl17vpt4a10oxp@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/session.c | 169 +++++++++++++++++++++++++++------------------- 1 file changed, 98 insertions(+), 71 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index 619778e..ff0188c 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -464,6 +464,100 @@ static void perf_session_free_sample_buffers(struct perf_session *session) } } +/* The queue is ordered by time */ +static void queue_event(struct ordered_events *oe, struct ordered_event *new) +{ + struct ordered_event *last = oe->last; + u64 timestamp = new->timestamp; + struct list_head *p; + + ++oe->nr_events; + oe->last = new; + + if (!last) { + list_add(&new->list, &oe->events); + oe->max_timestamp = timestamp; + return; + } + + /* + * last event might point to some random place in the list as it's + * the last queued event. We expect that the new event is close to + * this. + */ + if (last->timestamp <= timestamp) { + while (last->timestamp <= timestamp) { + p = last->list.next; + if (p == &oe->events) { + list_add_tail(&new->list, &oe->events); + oe->max_timestamp = timestamp; + return; + } + last = list_entry(p, struct ordered_event, list); + } + list_add_tail(&new->list, &last->list); + } else { + while (last->timestamp > timestamp) { + p = last->list.prev; + if (p == &oe->events) { + list_add(&new->list, &oe->events); + return; + } + last = list_entry(p, struct ordered_event, list); + } + list_add(&new->list, &last->list); + } +} + +#define MAX_SAMPLE_BUFFER (64 * 1024 / sizeof(struct ordered_event)) +static struct ordered_event *alloc_event(struct ordered_events *oe) +{ + struct list_head *cache = &oe->cache; + struct ordered_event *new; + + if (!list_empty(cache)) { + new = list_entry(cache->next, struct ordered_event, list); + list_del(&new->list); + } else if (oe->buffer) { + new = oe->buffer + oe->buffer_idx; + if (++oe->buffer_idx == MAX_SAMPLE_BUFFER) + oe->buffer = NULL; + } else { + oe->buffer = malloc(MAX_SAMPLE_BUFFER * sizeof(*new)); + if (!oe->buffer) + return NULL; + list_add(&oe->buffer->list, &oe->to_free); + + /* First entry is abused to maintain the to_free list. */ + oe->buffer_idx = 2; + new = oe->buffer + 1; + } + + return new; +} + +static struct ordered_event * +ordered_events__new(struct ordered_events *oe, u64 timestamp) +{ + struct ordered_event *new; + + new = alloc_event(oe); + if (new) { + new->timestamp = timestamp; + queue_event(oe, new); + } + + return new; +} + +static void +ordered_events__delete(struct ordered_events *oe, struct ordered_event *event) +{ + list_del(&event->list); + list_add(&event->list, &oe->cache); + oe->nr_events--; +} + static int perf_session_deliver_event(struct perf_session *session, union perf_event *event, struct perf_sample *sample, @@ -506,10 +600,8 @@ static int ordered_events__flush(struct perf_session *s, return ret; } + ordered_events__delete(oe, iter); oe->last_flush = iter->timestamp; - list_del(&iter->list); - list_add(&iter->list, &oe->cache); - oe->nr_events--; if (show_progress) ui_progress__update(&prog, 1); @@ -573,59 +665,10 @@ static int process_finished_round(struct perf_tool *tool, return ret; } -/* The queue is ordered by time */ -static void __queue_event(struct ordered_event *new, struct perf_session *s) -{ - struct ordered_events *oe = &s->ordered_events; - struct ordered_event *last = oe->last; - u64 timestamp = new->timestamp; - struct list_head *p; - - ++oe->nr_events; - oe->last = new; - - if (!last) { - list_add(&new->list, &oe->events); - oe->max_timestamp = timestamp; - return; - } - - /* - * last event might point to some random place in the list as it's - * the last queued event. We expect that the new event is close to - * this. - */ - if (last->timestamp <= timestamp) { - while (last->timestamp <= timestamp) { - p = last->list.next; - if (p == &oe->events) { - list_add_tail(&new->list, &oe->events); - oe->max_timestamp = timestamp; - return; - } - last = list_entry(p, struct ordered_event, list); - } - list_add_tail(&new->list, &last->list); - } else { - while (last->timestamp > timestamp) { - p = last->list.prev; - if (p == &oe->events) { - list_add(&new->list, &oe->events); - return; - } - last = list_entry(p, struct ordered_event, list); - } - list_add(&new->list, &last->list); - } -} - -#define MAX_SAMPLE_BUFFER (64 * 1024 / sizeof(struct ordered_event)) - int perf_session_queue_event(struct perf_session *s, union perf_event *event, struct perf_sample *sample, u64 file_offset) { struct ordered_events *oe = &s->ordered_events; - struct list_head *cache = &oe->cache; u64 timestamp = sample->time; struct ordered_event *new; @@ -637,28 +680,12 @@ int perf_session_queue_event(struct perf_session *s, union perf_event *event, return -EINVAL; } - if (!list_empty(cache)) { - new = list_entry(cache->next, struct ordered_event, list); - list_del(&new->list); - } else if (oe->buffer) { - new = oe->buffer + oe->buffer_idx; - if (++oe->buffer_idx == MAX_SAMPLE_BUFFER) - oe->buffer = NULL; - } else { - oe->buffer = malloc(MAX_SAMPLE_BUFFER * sizeof(*new)); - if (!oe->buffer) - return -ENOMEM; - list_add(&oe->buffer->list, &oe->to_free); - oe->buffer_idx = 2; - new = oe->buffer + 1; - } + new = ordered_events__new(oe, timestamp); + if (!new) + return -ENOMEM; - new->timestamp = timestamp; new->file_offset = file_offset; new->event = event; - - __queue_event(new, s); - return 0; } -- cgit v1.1 From d8836b5d1736632aa1a38a8ed0c9361c96d7c95a Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Thu, 5 Jun 2014 10:29:45 +0200 Subject: perf tools: Factor ordered_events__flush to be more generic Centralizing the next_flush calculation under the ordered_events__flush function. Signed-off-by: Jiri Olsa Acked-by: David Ahern Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jean Pihet Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/n/tip-srwunsy7o5wl17vpt4a10oxp@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/session.c | 47 ++++++++++++++++++++++++++++++++++++----------- 1 file changed, 36 insertions(+), 11 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index ff0188c..72c7b0d 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -451,6 +451,11 @@ struct ordered_event { struct list_head list; }; +enum oe_flush { + OE_FLUSH__FINAL, + OE_FLUSH__ROUND, +}; + static void perf_session_free_sample_buffers(struct perf_session *session) { struct ordered_events *oe = &session->ordered_events; @@ -564,8 +569,8 @@ static int perf_session_deliver_event(struct perf_session *session, struct perf_tool *tool, u64 file_offset); -static int ordered_events__flush(struct perf_session *s, - struct perf_tool *tool) +static int __ordered_events__flush(struct perf_session *s, + struct perf_tool *tool) { struct ordered_events *oe = &s->ordered_events; struct list_head *head = &oe->events; @@ -615,6 +620,32 @@ static int ordered_events__flush(struct perf_session *s, return 0; } +static int ordered_events__flush(struct perf_session *s, struct perf_tool *tool, + enum oe_flush how) +{ + struct ordered_events *oe = &s->ordered_events; + int err; + + switch (how) { + case OE_FLUSH__FINAL: + oe->next_flush = ULLONG_MAX; + break; + + case OE_FLUSH__ROUND: + default: + break; + }; + + err = __ordered_events__flush(s, tool); + + if (!err) { + if (how == OE_FLUSH__ROUND) + oe->next_flush = oe->max_timestamp; + } + + return err; +} + /* * When perf record finishes a pass on every buffers, it records this pseudo * event. @@ -658,11 +689,7 @@ static int process_finished_round(struct perf_tool *tool, union perf_event *event __maybe_unused, struct perf_session *session) { - int ret = ordered_events__flush(session, tool); - if (!ret) - session->ordered_events.next_flush = session->ordered_events.max_timestamp; - - return ret; + return ordered_events__flush(session, tool, OE_FLUSH__ROUND); } int perf_session_queue_event(struct perf_session *s, union perf_event *event, @@ -1247,8 +1274,7 @@ more: goto more; done: /* do the final flush for ordered samples */ - session->ordered_events.next_flush = ULLONG_MAX; - err = ordered_events__flush(session, tool); + err = ordered_events__flush(session, tool, OE_FLUSH__FINAL); out_err: free(buf); perf_session__warn_about_errors(session, tool); @@ -1393,8 +1419,7 @@ more: out: /* do the final flush for ordered samples */ - session->ordered_events.next_flush = ULLONG_MAX; - err = ordered_events__flush(session, tool); + err = ordered_events__flush(session, tool, OE_FLUSH__FINAL); out_err: ui_progress__finish(); perf_session__warn_about_errors(session, tool); -- cgit v1.1 From 8d99a6ceebe862ac4afd832cdab332ee7b3b5599 Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Wed, 11 Jun 2014 15:09:35 +0200 Subject: perf tools: Limit ordered events queue size Add limit to the ordered events queue allocation. This way we will be able to control the size of the queue buffers. There's no limit at the moment (it's set to (u64) -1). The config code will come in following patches. Signed-off-by: Jiri Olsa Acked-by: David Ahern Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jean Pihet Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/n/tip-lw1ny3mk4ctb6su5ght5rsng@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/session.c | 12 +++++++++--- tools/perf/util/session.h | 2 ++ 2 files changed, 11 insertions(+), 3 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index 72c7b0d..8d4538c 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -78,6 +78,8 @@ struct perf_session *perf_session__new(struct perf_data_file *file, INIT_LIST_HEAD(&session->ordered_events.events); INIT_LIST_HEAD(&session->ordered_events.cache); INIT_LIST_HEAD(&session->ordered_events.to_free); + session->ordered_events.max_alloc_size = (u64) -1; + session->ordered_events.cur_alloc_size = 0; machines__init(&session->machines); if (file) { @@ -518,7 +520,7 @@ static void queue_event(struct ordered_events *oe, struct ordered_event *new) static struct ordered_event *alloc_event(struct ordered_events *oe) { struct list_head *cache = &oe->cache; - struct ordered_event *new; + struct ordered_event *new = NULL; if (!list_empty(cache)) { new = list_entry(cache->next, struct ordered_event, list); @@ -527,10 +529,14 @@ static struct ordered_event *alloc_event(struct ordered_events *oe) new = oe->buffer + oe->buffer_idx; if (++oe->buffer_idx == MAX_SAMPLE_BUFFER) oe->buffer = NULL; - } else { - oe->buffer = malloc(MAX_SAMPLE_BUFFER * sizeof(*new)); + } else if (oe->cur_alloc_size < oe->max_alloc_size) { + size_t size = MAX_SAMPLE_BUFFER * sizeof(*new); + + oe->buffer = malloc(size); if (!oe->buffer) return NULL; + + oe->cur_alloc_size += size; list_add(&oe->buffer->list, &oe->to_free); /* First entry is abused to maintain the to_free list. */ diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h index 419eb50..e2fbaf2 100644 --- a/tools/perf/util/session.h +++ b/tools/perf/util/session.h @@ -20,6 +20,8 @@ struct ordered_events { u64 last_flush; u64 next_flush; u64 max_timestamp; + u64 max_alloc_size; + u64 cur_alloc_size; struct list_head events; struct list_head cache; struct list_head to_free; -- cgit v1.1 From d40b4a15ab2bfcfa7d946b69ca1f12c93b22d169 Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Fri, 1 Aug 2014 13:01:04 -0300 Subject: perf tools: Flush ordered events in case of allocation failure In previous patches we added a limit for ordered events queue allocation size. If we reach this size we need to flush (part of) the queue to get some free buffers. The current functionality is not affected, because the limit is hard coded to (u64) -1. The configuration code for size will come in following patches. Signed-off-by: Jiri Olsa Acked-by: David Ahern Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jean Pihet Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/n/tip-ggcas0xdq847fi85bz73do2e@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-kvm.c | 2 +- tools/perf/util/session.c | 29 +++++++++++++++++++++++++++-- tools/perf/util/session.h | 3 ++- 3 files changed, 30 insertions(+), 4 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c index 258a527..7cccead 100644 --- a/tools/perf/builtin-kvm.c +++ b/tools/perf/builtin-kvm.c @@ -732,7 +732,7 @@ static s64 perf_kvm__mmap_read_idx(struct perf_kvm_stat *kvm, int idx, return -1; } - err = perf_session_queue_event(kvm->session, event, &sample, 0); + err = perf_session_queue_event(kvm->session, event, &kvm->tool, &sample, 0); /* * FIXME: Here we can't consume the event, as perf_session_queue_event will * point to it, and it'll get possibly overwritten by the kernel. diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index 8d4538c..bd2483b 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -14,6 +14,7 @@ #include "util.h" #include "cpumap.h" #include "perf_regs.h" +#include "asm/bug.h" static int perf_session__open(struct perf_session *session) { @@ -456,6 +457,7 @@ struct ordered_event { enum oe_flush { OE_FLUSH__FINAL, OE_FLUSH__ROUND, + OE_FLUSH__HALF, }; static void perf_session_free_sample_buffers(struct perf_session *session) @@ -637,6 +639,23 @@ static int ordered_events__flush(struct perf_session *s, struct perf_tool *tool, oe->next_flush = ULLONG_MAX; break; + case OE_FLUSH__HALF: + { + struct ordered_event *first, *last; + struct list_head *head = &oe->events; + + first = list_entry(head->next, struct ordered_event, list); + last = oe->last; + + /* Warn if we are called before any event got allocated. */ + if (WARN_ONCE(!last || list_empty(head), "empty queue")) + return 0; + + oe->next_flush = first->timestamp; + oe->next_flush += (last->timestamp - first->timestamp) / 2; + break; + } + case OE_FLUSH__ROUND: default: break; @@ -699,7 +718,8 @@ static int process_finished_round(struct perf_tool *tool, } int perf_session_queue_event(struct perf_session *s, union perf_event *event, - struct perf_sample *sample, u64 file_offset) + struct perf_tool *tool, struct perf_sample *sample, + u64 file_offset) { struct ordered_events *oe = &s->ordered_events; u64 timestamp = sample->time; @@ -714,6 +734,11 @@ int perf_session_queue_event(struct perf_session *s, union perf_event *event, } new = ordered_events__new(oe, timestamp); + if (!new) { + ordered_events__flush(s, tool, OE_FLUSH__HALF); + new = ordered_events__new(oe, timestamp); + } + if (!new) return -ENOMEM; @@ -1121,7 +1146,7 @@ static s64 perf_session__process_event(struct perf_session *session, return ret; if (tool->ordered_events) { - ret = perf_session_queue_event(session, event, &sample, + ret = perf_session_queue_event(session, event, tool, &sample, file_offset); if (ret != -ETIME) return ret; diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h index e2fbaf2..a09e3c8 100644 --- a/tools/perf/util/session.h +++ b/tools/perf/util/session.h @@ -67,7 +67,8 @@ int perf_session__process_events(struct perf_session *session, struct perf_tool *tool); int perf_session_queue_event(struct perf_session *s, union perf_event *event, - struct perf_sample *sample, u64 file_offset); + struct perf_tool *tool, struct perf_sample *sample, + u64 file_offset); void perf_tool__fill_defaults(struct perf_tool *tool); -- cgit v1.1 From 79a30fe4f3758c98e1b7a474952b9701d513e580 Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Tue, 10 Jun 2014 22:31:35 +0200 Subject: perf tools: Make perf_session__deliver_event global Making perf_session__deliver_event global function, as it will be called from another object in following patch. Signed-off-by: Jiri Olsa Acked-by: David Ahern Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jean Pihet Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/n/tip-rz7s2b8uwv567bigckh75gvk@git.kernel.org [ Fixup naming to match class__method schema, as now is more widely exposed ] Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/session.c | 23 ++++++++--------------- tools/perf/util/session.h | 5 +++++ 2 files changed, 13 insertions(+), 15 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index bd2483b..ed6b7f1 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -571,12 +571,6 @@ ordered_events__delete(struct ordered_events *oe, struct ordered_event *event) oe->nr_events--; } -static int perf_session_deliver_event(struct perf_session *session, - union perf_event *event, - struct perf_sample *sample, - struct perf_tool *tool, - u64 file_offset); - static int __ordered_events__flush(struct perf_session *s, struct perf_tool *tool) { @@ -607,8 +601,8 @@ static int __ordered_events__flush(struct perf_session *s, if (ret) pr_err("Can't parse sample, err = %d\n", ret); else { - ret = perf_session_deliver_event(s, iter->event, &sample, tool, - iter->file_offset); + ret = perf_session__deliver_event(s, iter->event, &sample, tool, + iter->file_offset); if (ret) return ret; } @@ -1003,11 +997,10 @@ perf_session__deliver_sample(struct perf_session *session, &sample->read.one, machine); } -static int perf_session_deliver_event(struct perf_session *session, - union perf_event *event, - struct perf_sample *sample, - struct perf_tool *tool, - u64 file_offset) +int perf_session__deliver_event(struct perf_session *session, + union perf_event *event, + struct perf_sample *sample, + struct perf_tool *tool, u64 file_offset) { struct perf_evsel *evsel; struct machine *machine; @@ -1152,8 +1145,8 @@ static s64 perf_session__process_event(struct perf_session *session, return ret; } - return perf_session_deliver_event(session, event, &sample, tool, - file_offset); + return perf_session__deliver_event(session, event, &sample, tool, + file_offset); } void perf_event_header__bswap(struct perf_event_header *hdr) diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h index a09e3c8..03da1cb 100644 --- a/tools/perf/util/session.h +++ b/tools/perf/util/session.h @@ -72,6 +72,11 @@ int perf_session_queue_event(struct perf_session *s, union perf_event *event, void perf_tool__fill_defaults(struct perf_tool *tool); +int perf_session__deliver_event(struct perf_session *session, + union perf_event *event, + struct perf_sample *sample, + struct perf_tool *tool, u64 file_offset); + int perf_session__resolve_callchain(struct perf_session *session, struct perf_evsel *evsel, struct thread *thread, -- cgit v1.1 From 5f86b80b85f0dcd05fd1471eac6984181a707c4f Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Fri, 1 Aug 2014 13:02:58 -0300 Subject: perf tools: Create ordered-events object Move ordered events code into separated object ordered-events.[ch]. No functional change was intended. Signed-off-by: Jiri Olsa Acked-by: David Ahern Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jean Pihet Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/n/tip-1ge3rilgudszbl87cejm1tfg@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/Makefile.perf | 2 + tools/perf/util/ordered-events.c | 196 +++++++++++++++++++++++++++++++++++++ tools/perf/util/ordered-events.h | 41 ++++++++ tools/perf/util/session.c | 206 --------------------------------------- tools/perf/util/session.h | 17 +--- 5 files changed, 240 insertions(+), 222 deletions(-) create mode 100644 tools/perf/util/ordered-events.c create mode 100644 tools/perf/util/ordered-events.h (limited to 'tools') diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf index 2240974..1ea31e2 100644 --- a/tools/perf/Makefile.perf +++ b/tools/perf/Makefile.perf @@ -263,6 +263,7 @@ LIB_H += util/xyarray.h LIB_H += util/header.h LIB_H += util/help.h LIB_H += util/session.h +LIB_H += util/ordered-events.h LIB_H += util/strbuf.h LIB_H += util/strlist.h LIB_H += util/strfilter.h @@ -347,6 +348,7 @@ LIB_OBJS += $(OUTPUT)util/machine.o LIB_OBJS += $(OUTPUT)util/map.o LIB_OBJS += $(OUTPUT)util/pstack.o LIB_OBJS += $(OUTPUT)util/session.o +LIB_OBJS += $(OUTPUT)util/ordered-events.o LIB_OBJS += $(OUTPUT)util/comm.o LIB_OBJS += $(OUTPUT)util/thread.o LIB_OBJS += $(OUTPUT)util/thread_map.o diff --git a/tools/perf/util/ordered-events.c b/tools/perf/util/ordered-events.c new file mode 100644 index 0000000..95f8211 --- /dev/null +++ b/tools/perf/util/ordered-events.c @@ -0,0 +1,196 @@ +#include +#include "ordered-events.h" +#include "evlist.h" +#include "session.h" +#include "asm/bug.h" +#include "debug.h" + +static void queue_event(struct ordered_events *oe, struct ordered_event *new) +{ + struct ordered_event *last = oe->last; + u64 timestamp = new->timestamp; + struct list_head *p; + + ++oe->nr_events; + oe->last = new; + + if (!last) { + list_add(&new->list, &oe->events); + oe->max_timestamp = timestamp; + return; + } + + /* + * last event might point to some random place in the list as it's + * the last queued event. We expect that the new event is close to + * this. + */ + if (last->timestamp <= timestamp) { + while (last->timestamp <= timestamp) { + p = last->list.next; + if (p == &oe->events) { + list_add_tail(&new->list, &oe->events); + oe->max_timestamp = timestamp; + return; + } + last = list_entry(p, struct ordered_event, list); + } + list_add_tail(&new->list, &last->list); + } else { + while (last->timestamp > timestamp) { + p = last->list.prev; + if (p == &oe->events) { + list_add(&new->list, &oe->events); + return; + } + last = list_entry(p, struct ordered_event, list); + } + list_add(&new->list, &last->list); + } +} + +#define MAX_SAMPLE_BUFFER (64 * 1024 / sizeof(struct ordered_event)) +static struct ordered_event *alloc_event(struct ordered_events *oe) +{ + struct list_head *cache = &oe->cache; + struct ordered_event *new = NULL; + + if (!list_empty(cache)) { + new = list_entry(cache->next, struct ordered_event, list); + list_del(&new->list); + } else if (oe->buffer) { + new = oe->buffer + oe->buffer_idx; + if (++oe->buffer_idx == MAX_SAMPLE_BUFFER) + oe->buffer = NULL; + } else if (oe->cur_alloc_size < oe->max_alloc_size) { + size_t size = MAX_SAMPLE_BUFFER * sizeof(*new); + + oe->buffer = malloc(size); + if (!oe->buffer) + return NULL; + + oe->cur_alloc_size += size; + list_add(&oe->buffer->list, &oe->to_free); + + /* First entry is abused to maintain the to_free list. */ + oe->buffer_idx = 2; + new = oe->buffer + 1; + } + + return new; +} + +struct ordered_event * +ordered_events__new(struct ordered_events *oe, u64 timestamp) +{ + struct ordered_event *new; + + new = alloc_event(oe); + if (new) { + new->timestamp = timestamp; + queue_event(oe, new); + } + + return new; +} + +void ordered_events__delete(struct ordered_events *oe, struct ordered_event *event) +{ + list_del(&event->list); + list_add(&event->list, &oe->cache); + oe->nr_events--; +} + +static int __ordered_events__flush(struct perf_session *s, + struct perf_tool *tool) +{ + struct ordered_events *oe = &s->ordered_events; + struct list_head *head = &oe->events; + struct ordered_event *tmp, *iter; + struct perf_sample sample; + u64 limit = oe->next_flush; + u64 last_ts = oe->last ? oe->last->timestamp : 0ULL; + bool show_progress = limit == ULLONG_MAX; + struct ui_progress prog; + int ret; + + if (!tool->ordered_events || !limit) + return 0; + + if (show_progress) + ui_progress__init(&prog, oe->nr_events, "Processing time ordered events..."); + + list_for_each_entry_safe(iter, tmp, head, list) { + if (session_done()) + return 0; + + if (iter->timestamp > limit) + break; + + ret = perf_evlist__parse_sample(s->evlist, iter->event, &sample); + if (ret) + pr_err("Can't parse sample, err = %d\n", ret); + else { + ret = perf_session__deliver_event(s, iter->event, &sample, tool, + iter->file_offset); + if (ret) + return ret; + } + + ordered_events__delete(oe, iter); + oe->last_flush = iter->timestamp; + + if (show_progress) + ui_progress__update(&prog, 1); + } + + if (list_empty(head)) + oe->last = NULL; + else if (last_ts <= limit) + oe->last = list_entry(head->prev, struct ordered_event, list); + + return 0; +} + +int ordered_events__flush(struct perf_session *s, struct perf_tool *tool, + enum oe_flush how) +{ + struct ordered_events *oe = &s->ordered_events; + int err; + + switch (how) { + case OE_FLUSH__FINAL: + oe->next_flush = ULLONG_MAX; + break; + + case OE_FLUSH__HALF: + { + struct ordered_event *first, *last; + struct list_head *head = &oe->events; + + first = list_entry(head->next, struct ordered_event, list); + last = oe->last; + + /* Warn if we are called before any event got allocated. */ + if (WARN_ONCE(!last || list_empty(head), "empty queue")) + return 0; + + oe->next_flush = first->timestamp; + oe->next_flush += (last->timestamp - first->timestamp) / 2; + break; + } + + case OE_FLUSH__ROUND: + default: + break; + }; + + err = __ordered_events__flush(s, tool); + + if (!err) { + if (how == OE_FLUSH__ROUND) + oe->next_flush = oe->max_timestamp; + } + + return err; +} diff --git a/tools/perf/util/ordered-events.h b/tools/perf/util/ordered-events.h new file mode 100644 index 0000000..8309983 --- /dev/null +++ b/tools/perf/util/ordered-events.h @@ -0,0 +1,41 @@ +#ifndef __ORDERED_EVENTS_H +#define __ORDERED_EVENTS_H + +#include +#include "tool.h" + +struct perf_session; + +struct ordered_event { + u64 timestamp; + u64 file_offset; + union perf_event *event; + struct list_head list; +}; + +enum oe_flush { + OE_FLUSH__FINAL, + OE_FLUSH__ROUND, + OE_FLUSH__HALF, +}; + +struct ordered_events { + u64 last_flush; + u64 next_flush; + u64 max_timestamp; + u64 max_alloc_size; + u64 cur_alloc_size; + struct list_head events; + struct list_head cache; + struct list_head to_free; + struct ordered_event *buffer; + struct ordered_event *last; + int buffer_idx; + unsigned int nr_events; +}; + +struct ordered_event *ordered_events__new(struct ordered_events *oe, u64 timestamp); +void ordered_events__delete(struct ordered_events *oe, struct ordered_event *event); +int ordered_events__flush(struct perf_session *s, struct perf_tool *tool, + enum oe_flush how); +#endif /* __ORDERED_EVENTS_H */ diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index ed6b7f1..0ccf051 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -14,7 +14,6 @@ #include "util.h" #include "cpumap.h" #include "perf_regs.h" -#include "asm/bug.h" static int perf_session__open(struct perf_session *session) { @@ -447,19 +446,6 @@ static perf_event__swap_op perf_event__swap_ops[] = { [PERF_RECORD_HEADER_MAX] = NULL, }; -struct ordered_event { - u64 timestamp; - u64 file_offset; - union perf_event *event; - struct list_head list; -}; - -enum oe_flush { - OE_FLUSH__FINAL, - OE_FLUSH__ROUND, - OE_FLUSH__HALF, -}; - static void perf_session_free_sample_buffers(struct perf_session *session) { struct ordered_events *oe = &session->ordered_events; @@ -473,198 +459,6 @@ static void perf_session_free_sample_buffers(struct perf_session *session) } } -/* The queue is ordered by time */ -static void queue_event(struct ordered_events *oe, struct ordered_event *new) -{ - struct ordered_event *last = oe->last; - u64 timestamp = new->timestamp; - struct list_head *p; - - ++oe->nr_events; - oe->last = new; - - if (!last) { - list_add(&new->list, &oe->events); - oe->max_timestamp = timestamp; - return; - } - - /* - * last event might point to some random place in the list as it's - * the last queued event. We expect that the new event is close to - * this. - */ - if (last->timestamp <= timestamp) { - while (last->timestamp <= timestamp) { - p = last->list.next; - if (p == &oe->events) { - list_add_tail(&new->list, &oe->events); - oe->max_timestamp = timestamp; - return; - } - last = list_entry(p, struct ordered_event, list); - } - list_add_tail(&new->list, &last->list); - } else { - while (last->timestamp > timestamp) { - p = last->list.prev; - if (p == &oe->events) { - list_add(&new->list, &oe->events); - return; - } - last = list_entry(p, struct ordered_event, list); - } - list_add(&new->list, &last->list); - } -} - -#define MAX_SAMPLE_BUFFER (64 * 1024 / sizeof(struct ordered_event)) -static struct ordered_event *alloc_event(struct ordered_events *oe) -{ - struct list_head *cache = &oe->cache; - struct ordered_event *new = NULL; - - if (!list_empty(cache)) { - new = list_entry(cache->next, struct ordered_event, list); - list_del(&new->list); - } else if (oe->buffer) { - new = oe->buffer + oe->buffer_idx; - if (++oe->buffer_idx == MAX_SAMPLE_BUFFER) - oe->buffer = NULL; - } else if (oe->cur_alloc_size < oe->max_alloc_size) { - size_t size = MAX_SAMPLE_BUFFER * sizeof(*new); - - oe->buffer = malloc(size); - if (!oe->buffer) - return NULL; - - oe->cur_alloc_size += size; - list_add(&oe->buffer->list, &oe->to_free); - - /* First entry is abused to maintain the to_free list. */ - oe->buffer_idx = 2; - new = oe->buffer + 1; - } - - return new; -} - -static struct ordered_event * -ordered_events__new(struct ordered_events *oe, u64 timestamp) -{ - struct ordered_event *new; - - new = alloc_event(oe); - if (new) { - new->timestamp = timestamp; - queue_event(oe, new); - } - - return new; -} - -static void -ordered_events__delete(struct ordered_events *oe, struct ordered_event *event) -{ - list_del(&event->list); - list_add(&event->list, &oe->cache); - oe->nr_events--; -} - -static int __ordered_events__flush(struct perf_session *s, - struct perf_tool *tool) -{ - struct ordered_events *oe = &s->ordered_events; - struct list_head *head = &oe->events; - struct ordered_event *tmp, *iter; - struct perf_sample sample; - u64 limit = oe->next_flush; - u64 last_ts = oe->last ? oe->last->timestamp : 0ULL; - bool show_progress = limit == ULLONG_MAX; - struct ui_progress prog; - int ret; - - if (!tool->ordered_events || !limit) - return 0; - - if (show_progress) - ui_progress__init(&prog, oe->nr_events, "Processing time ordered events..."); - - list_for_each_entry_safe(iter, tmp, head, list) { - if (session_done()) - return 0; - - if (iter->timestamp > limit) - break; - - ret = perf_evlist__parse_sample(s->evlist, iter->event, &sample); - if (ret) - pr_err("Can't parse sample, err = %d\n", ret); - else { - ret = perf_session__deliver_event(s, iter->event, &sample, tool, - iter->file_offset); - if (ret) - return ret; - } - - ordered_events__delete(oe, iter); - oe->last_flush = iter->timestamp; - - if (show_progress) - ui_progress__update(&prog, 1); - } - - if (list_empty(head)) - oe->last = NULL; - else if (last_ts <= limit) - oe->last = list_entry(head->prev, struct ordered_event, list); - - return 0; -} - -static int ordered_events__flush(struct perf_session *s, struct perf_tool *tool, - enum oe_flush how) -{ - struct ordered_events *oe = &s->ordered_events; - int err; - - switch (how) { - case OE_FLUSH__FINAL: - oe->next_flush = ULLONG_MAX; - break; - - case OE_FLUSH__HALF: - { - struct ordered_event *first, *last; - struct list_head *head = &oe->events; - - first = list_entry(head->next, struct ordered_event, list); - last = oe->last; - - /* Warn if we are called before any event got allocated. */ - if (WARN_ONCE(!last || list_empty(head), "empty queue")) - return 0; - - oe->next_flush = first->timestamp; - oe->next_flush += (last->timestamp - first->timestamp) / 2; - break; - } - - case OE_FLUSH__ROUND: - default: - break; - }; - - err = __ordered_events__flush(s, tool); - - if (!err) { - if (how == OE_FLUSH__ROUND) - oe->next_flush = oe->max_timestamp; - } - - return err; -} - /* * When perf record finishes a pass on every buffers, it records this pseudo * event. diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h index 03da1cb..0630e65 100644 --- a/tools/perf/util/session.h +++ b/tools/perf/util/session.h @@ -9,28 +9,13 @@ #include "symbol.h" #include "thread.h" #include "data.h" +#include "ordered-events.h" #include #include -struct ordered_event; struct ip_callchain; struct thread; -struct ordered_events { - u64 last_flush; - u64 next_flush; - u64 max_timestamp; - u64 max_alloc_size; - u64 cur_alloc_size; - struct list_head events; - struct list_head cache; - struct list_head to_free; - struct ordered_event *buffer; - struct ordered_event *last; - int buffer_idx; - unsigned int nr_events; -}; - struct perf_session { struct perf_header header; struct machines machines; -- cgit v1.1 From fa4e5c67a2d169b9ef83f51b94e1d4a562ddfc0f Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Sun, 15 Jun 2014 19:46:08 +0200 Subject: perf tools: Use list_move in ordered_events_delete function As Namhyung pointed out we can use list_move in ordered_events_delete. Signed-off-by: Jiri Olsa Suggested-by: Namhyung Kim Acked-by: David Ahern Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jean Pihet Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/n/tip-m8ae5s5cuwyytitgb6iqilid@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/ordered-events.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/ordered-events.c b/tools/perf/util/ordered-events.c index 95f8211..be6a48c 100644 --- a/tools/perf/util/ordered-events.c +++ b/tools/perf/util/ordered-events.c @@ -96,8 +96,7 @@ ordered_events__new(struct ordered_events *oe, u64 timestamp) void ordered_events__delete(struct ordered_events *oe, struct ordered_event *event) { - list_del(&event->list); - list_add(&event->list, &oe->cache); + list_move(&event->list, &oe->cache); oe->nr_events--; } -- cgit v1.1 From 36522f5cf2ad280c971557e04120d52f9330ed36 Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Tue, 10 Jun 2014 22:47:40 +0200 Subject: perf tools: Add ordered_events__init function Adding ordered_events__init function for struct ordered_events struct initialization. Signed-off-by: Jiri Olsa Acked-by: David Ahern Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jean Pihet Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/n/tip-g6dx35hed8g14eh1ygx4uzp6@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/ordered-events.c | 9 +++++++++ tools/perf/util/ordered-events.h | 1 + tools/perf/util/session.c | 6 +----- 3 files changed, 11 insertions(+), 5 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/ordered-events.c b/tools/perf/util/ordered-events.c index be6a48c..7b8923e 100644 --- a/tools/perf/util/ordered-events.c +++ b/tools/perf/util/ordered-events.c @@ -193,3 +193,12 @@ int ordered_events__flush(struct perf_session *s, struct perf_tool *tool, return err; } + +void ordered_events__init(struct ordered_events *oe) +{ + INIT_LIST_HEAD(&oe->events); + INIT_LIST_HEAD(&oe->cache); + INIT_LIST_HEAD(&oe->to_free); + oe->max_alloc_size = (u64) -1; + oe->cur_alloc_size = 0; +} diff --git a/tools/perf/util/ordered-events.h b/tools/perf/util/ordered-events.h index 8309983..62f9945 100644 --- a/tools/perf/util/ordered-events.h +++ b/tools/perf/util/ordered-events.h @@ -38,4 +38,5 @@ struct ordered_event *ordered_events__new(struct ordered_events *oe, u64 timesta void ordered_events__delete(struct ordered_events *oe, struct ordered_event *event); int ordered_events__flush(struct perf_session *s, struct perf_tool *tool, enum oe_flush how); +void ordered_events__init(struct ordered_events *oe); #endif /* __ORDERED_EVENTS_H */ diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index 0ccf051..7f5851e 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -75,11 +75,7 @@ struct perf_session *perf_session__new(struct perf_data_file *file, goto out; session->repipe = repipe; - INIT_LIST_HEAD(&session->ordered_events.events); - INIT_LIST_HEAD(&session->ordered_events.cache); - INIT_LIST_HEAD(&session->ordered_events.to_free); - session->ordered_events.max_alloc_size = (u64) -1; - session->ordered_events.cur_alloc_size = 0; + ordered_events__init(&session->ordered_events); machines__init(&session->machines); if (file) { -- cgit v1.1 From adc56ed1e01f1c43fc7bf75340f11f4ad5e11145 Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Tue, 10 Jun 2014 22:50:03 +0200 Subject: perf tools: Add ordered_events__free function Adding ordered_events__free function to release all the struct ordered_events data. It's replacement for former perf_session_free_sample_buffers function. Signed-off-by: Jiri Olsa Acked-by: David Ahern Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jean Pihet Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/n/tip-urraa8ccay4o14wambjraws7@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/ordered-events.c | 11 +++++++++++ tools/perf/util/ordered-events.h | 1 + tools/perf/util/session.c | 17 ++--------------- 3 files changed, 14 insertions(+), 15 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/ordered-events.c b/tools/perf/util/ordered-events.c index 7b8923e..381d5fe 100644 --- a/tools/perf/util/ordered-events.c +++ b/tools/perf/util/ordered-events.c @@ -202,3 +202,14 @@ void ordered_events__init(struct ordered_events *oe) oe->max_alloc_size = (u64) -1; oe->cur_alloc_size = 0; } + +void ordered_events__free(struct ordered_events *oe) +{ + while (!list_empty(&oe->to_free)) { + struct ordered_event *event; + + event = list_entry(oe->to_free.next, struct ordered_event, list); + list_del(&event->list); + free(event); + } +} diff --git a/tools/perf/util/ordered-events.h b/tools/perf/util/ordered-events.h index 62f9945..6036bd6 100644 --- a/tools/perf/util/ordered-events.h +++ b/tools/perf/util/ordered-events.h @@ -39,4 +39,5 @@ void ordered_events__delete(struct ordered_events *oe, struct ordered_event *eve int ordered_events__flush(struct perf_session *s, struct perf_tool *tool, enum oe_flush how); void ordered_events__init(struct ordered_events *oe); +void ordered_events__free(struct ordered_events *oe); #endif /* __ORDERED_EVENTS_H */ diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index 7f5851e..7d8dbf2 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -442,19 +442,6 @@ static perf_event__swap_op perf_event__swap_ops[] = { [PERF_RECORD_HEADER_MAX] = NULL, }; -static void perf_session_free_sample_buffers(struct perf_session *session) -{ - struct ordered_events *oe = &session->ordered_events; - - while (!list_empty(&oe->to_free)) { - struct ordered_event *event; - - event = list_entry(oe->to_free.next, struct ordered_event, list); - list_del(&event->list); - free(event); - } -} - /* * When perf record finishes a pass on every buffers, it records this pseudo * event. @@ -1092,7 +1079,7 @@ done: out_err: free(buf); perf_session__warn_about_errors(session, tool); - perf_session_free_sample_buffers(session); + ordered_events__free(&session->ordered_events); return err; } @@ -1237,7 +1224,7 @@ out: out_err: ui_progress__finish(); perf_session__warn_about_errors(session, tool); - perf_session_free_sample_buffers(session); + ordered_events__free(&session->ordered_events); session->one_mmap = false; return err; } -- cgit v1.1 From 94c0655fc16b0c09edc21cadddbeef95c408f3e7 Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Fri, 6 Jun 2014 05:27:28 -0400 Subject: perf tools: Add perf_config_u64 function Adding perf_config_u64 function to be able to parse 'llong' values out of config file. Signed-off-by: Jiri Olsa Acked-by: David Ahern Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jean Pihet Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/n/tip-ni6gqdlvw7khp74r9htvklkb@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/cache.h | 1 + tools/perf/util/config.c | 24 ++++++++++++++++++++++++ 2 files changed, 25 insertions(+) (limited to 'tools') diff --git a/tools/perf/util/cache.h b/tools/perf/util/cache.h index 7b176dd..5cf9e1b 100644 --- a/tools/perf/util/cache.h +++ b/tools/perf/util/cache.h @@ -22,6 +22,7 @@ typedef int (*config_fn_t)(const char *, const char *, void *); extern int perf_default_config(const char *, const char *, void *); extern int perf_config(config_fn_t fn, void *); extern int perf_config_int(const char *, const char *); +extern u64 perf_config_u64(const char *, const char *); extern int perf_config_bool(const char *, const char *); extern int config_error_nonbool(const char *); extern const char *perf_config_dirname(const char *, const char *); diff --git a/tools/perf/util/config.c b/tools/perf/util/config.c index 1e5e2e5..9970b8b 100644 --- a/tools/perf/util/config.c +++ b/tools/perf/util/config.c @@ -286,6 +286,21 @@ static int parse_unit_factor(const char *end, unsigned long *val) return 0; } +static int perf_parse_llong(const char *value, long long *ret) +{ + if (value && *value) { + char *end; + long long val = strtoll(value, &end, 0); + unsigned long factor = 1; + + if (!parse_unit_factor(end, &factor)) + return 0; + *ret = val * factor; + return 1; + } + return 0; +} + static int perf_parse_long(const char *value, long *ret) { if (value && *value) { @@ -307,6 +322,15 @@ static void die_bad_config(const char *name) die("bad config value for '%s'", name); } +u64 perf_config_u64(const char *name, const char *value) +{ + long long ret = 0; + + if (!perf_parse_llong(value, &ret)) + die_bad_config(name); + return (u64) ret; +} + int perf_config_int(const char *name, const char *value) { long ret = 0; -- cgit v1.1 From 94786b67b5f4577c16486e8eb10ff045e59f80ef Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Thu, 5 Jun 2014 11:00:20 +0200 Subject: perf tools: Add report.queue-size config file option Adding report.queue-size config file option to setup the maximum allocation size for session's struct ordered_events object. Signed-off-by: Jiri Olsa Acked-by: David Ahern Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jean Pihet Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/n/tip-lm42mbpu0cwljpyy8vw5y26n@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-report.c | 13 ++++++++++++- tools/perf/util/ordered-events.h | 6 ++++++ 2 files changed, 18 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index c72cc5a..041e93d 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -58,17 +58,19 @@ struct report { const char *symbol_filter_str; float min_percent; u64 nr_entries; + u64 queue_size; DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS); }; static int report__config(const char *var, const char *value, void *cb) { + struct report *rep = cb; + if (!strcmp(var, "report.group")) { symbol_conf.event_group = perf_config_bool(var, value); return 0; } if (!strcmp(var, "report.percent-limit")) { - struct report *rep = cb; rep->min_percent = strtof(value, NULL); return 0; } @@ -76,6 +78,10 @@ static int report__config(const char *var, const char *value, void *cb) symbol_conf.cumulate_callchain = perf_config_bool(var, value); return 0; } + if (!strcmp(var, "report.queue-size")) { + rep->queue_size = perf_config_u64(var, value); + return 0; + } return perf_default_config(var, value, cb); } @@ -714,6 +720,11 @@ repeat: if (session == NULL) return -ENOMEM; + if (report.queue_size) { + ordered_events__set_alloc_size(&session->ordered_events, + report.queue_size); + } + report.session = session; has_br_stack = perf_header__has_feat(&session->header, diff --git a/tools/perf/util/ordered-events.h b/tools/perf/util/ordered-events.h index 6036bd6..2ce847f 100644 --- a/tools/perf/util/ordered-events.h +++ b/tools/perf/util/ordered-events.h @@ -40,4 +40,10 @@ int ordered_events__flush(struct perf_session *s, struct perf_tool *tool, enum oe_flush how); void ordered_events__init(struct ordered_events *oe); void ordered_events__free(struct ordered_events *oe); + +static inline +void ordered_events__set_alloc_size(struct ordered_events *oe, u64 size) +{ + oe->max_alloc_size = size; +} #endif /* __ORDERED_EVENTS_H */ -- cgit v1.1 From cee3ab9caa7ae5ee81027e60c0109063664d9217 Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Fri, 11 Jul 2014 14:49:54 +0200 Subject: perf tools: Add debug prints for ordered events queue Adding some prints for ordered events queue, to help debug issues. Adding debug_ordered_events debug variable to be able to enable ordered events debug messages using: $ perf --debug ordered-events=2 report ... Also using oe pointer in perf_session__queue_event instead of chained session variable dereferencing. Signed-off-by: Jiri Olsa Acked-by: David Ahern Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jean Pihet Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/n/tip-7p3mnnopjvsp9nmk9msqcfkm@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/debug.c | 36 +++++++++++++++++++++++++++++++++++- tools/perf/util/debug.h | 8 ++++++++ tools/perf/util/ordered-events.c | 26 ++++++++++++++++++++++++++ tools/perf/util/session.c | 4 +++- 4 files changed, 72 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/debug.c b/tools/perf/util/debug.c index 71d4193..ba357f3 100644 --- a/tools/perf/util/debug.c +++ b/tools/perf/util/debug.c @@ -13,8 +13,12 @@ #include "util.h" #include "target.h" +#define NSECS_PER_SEC 1000000000ULL +#define NSECS_PER_USEC 1000ULL + int verbose; bool dump_trace = false, quiet = false; +int debug_ordered_events; static int _eprintf(int level, int var, const char *fmt, va_list args) { @@ -42,6 +46,35 @@ int eprintf(int level, int var, const char *fmt, ...) return ret; } +static int __eprintf_time(u64 t, const char *fmt, va_list args) +{ + int ret = 0; + u64 secs, usecs, nsecs = t; + + secs = nsecs / NSECS_PER_SEC; + nsecs -= secs * NSECS_PER_SEC; + usecs = nsecs / NSECS_PER_USEC; + + ret = fprintf(stderr, "[%13" PRIu64 ".%06" PRIu64 "] ", + secs, usecs); + ret += vfprintf(stderr, fmt, args); + return ret; +} + +int eprintf_time(int level, int var, u64 t, const char *fmt, ...) +{ + int ret = 0; + va_list args; + + if (var >= level) { + va_start(args, fmt); + ret = __eprintf_time(t, fmt, args); + va_end(args); + } + + return ret; +} + /* * Overloading libtraceevent standard info print * function, display with -v in perf. @@ -110,7 +143,8 @@ static struct debug_variable { const char *name; int *ptr; } debug_variables[] = { - { .name = "verbose", .ptr = &verbose }, + { .name = "verbose", .ptr = &verbose }, + { .name = "ordered-events", .ptr = &debug_ordered_events}, { .name = NULL, } }; diff --git a/tools/perf/util/debug.h b/tools/perf/util/debug.h index 89fb6b0..6944ea3 100644 --- a/tools/perf/util/debug.h +++ b/tools/perf/util/debug.h @@ -10,6 +10,7 @@ extern int verbose; extern bool quiet, dump_trace; +extern int debug_ordered_events; #ifndef pr_fmt #define pr_fmt(fmt) fmt @@ -29,6 +30,12 @@ extern bool quiet, dump_trace; #define pr_debug3(fmt, ...) pr_debugN(3, pr_fmt(fmt), ##__VA_ARGS__) #define pr_debug4(fmt, ...) pr_debugN(4, pr_fmt(fmt), ##__VA_ARGS__) +#define pr_time_N(n, var, t, fmt, ...) \ + eprintf_time(n, var, t, fmt, ##__VA_ARGS__) + +#define pr_oe_time(t, fmt, ...) pr_time_N(1, debug_ordered_events, t, pr_fmt(fmt), ##__VA_ARGS__) +#define pr_oe_time2(t, fmt, ...) pr_time_N(2, debug_ordered_events, t, pr_fmt(fmt), ##__VA_ARGS__) + int dump_printf(const char *fmt, ...) __attribute__((format(printf, 1, 2))); void trace_event(union perf_event *event); @@ -38,6 +45,7 @@ int ui__warning(const char *format, ...) __attribute__((format(printf, 1, 2))); void pr_stat(const char *fmt, ...); int eprintf(int level, int var, const char *fmt, ...) __attribute__((format(printf, 3, 4))); +int eprintf_time(int level, int var, u64 t, const char *fmt, ...) __attribute__((format(printf, 4, 5))); int perf_debug_option(const char *str); diff --git a/tools/perf/util/ordered-events.c b/tools/perf/util/ordered-events.c index 381d5fe..8a8aeab 100644 --- a/tools/perf/util/ordered-events.c +++ b/tools/perf/util/ordered-events.c @@ -1,10 +1,16 @@ #include +#include #include "ordered-events.h" #include "evlist.h" #include "session.h" #include "asm/bug.h" #include "debug.h" +#define pr_N(n, fmt, ...) \ + eprintf(n, debug_ordered_events, fmt, ##__VA_ARGS__) + +#define pr(fmt, ...) pr_N(1, pr_fmt(fmt), ##__VA_ARGS__) + static void queue_event(struct ordered_events *oe, struct ordered_event *new) { struct ordered_event *last = oe->last; @@ -14,6 +20,8 @@ static void queue_event(struct ordered_events *oe, struct ordered_event *new) ++oe->nr_events; oe->last = new; + pr_oe_time2(timestamp, "queue_event nr_events %u\n", oe->nr_events); + if (!last) { list_add(&new->list, &oe->events); oe->max_timestamp = timestamp; @@ -69,12 +77,17 @@ static struct ordered_event *alloc_event(struct ordered_events *oe) if (!oe->buffer) return NULL; + pr("alloc size %" PRIu64 "B (+%zu), max %" PRIu64 "B\n", + oe->cur_alloc_size, size, oe->max_alloc_size); + oe->cur_alloc_size += size; list_add(&oe->buffer->list, &oe->to_free); /* First entry is abused to maintain the to_free list. */ oe->buffer_idx = 2; new = oe->buffer + 1; + } else { + pr("allocation limit reached %" PRIu64 "B\n", oe->max_alloc_size); } return new; @@ -155,6 +168,11 @@ int ordered_events__flush(struct perf_session *s, struct perf_tool *tool, enum oe_flush how) { struct ordered_events *oe = &s->ordered_events; + static const char * const str[] = { + "FINAL", + "ROUND", + "HALF ", + }; int err; switch (how) { @@ -184,6 +202,10 @@ int ordered_events__flush(struct perf_session *s, struct perf_tool *tool, break; }; + pr_oe_time(oe->next_flush, "next_flush - ordered_events__flush PRE %s, nr_events %u\n", + str[how], oe->nr_events); + pr_oe_time(oe->max_timestamp, "max_timestamp\n"); + err = __ordered_events__flush(s, tool); if (!err) { @@ -191,6 +213,10 @@ int ordered_events__flush(struct perf_session *s, struct perf_tool *tool, oe->next_flush = oe->max_timestamp; } + pr_oe_time(oe->next_flush, "next_flush - ordered_events__flush POST %s, nr_events %u\n", + str[how], oe->nr_events); + pr_oe_time(oe->last_flush, "last_flush\n"); + return err; } diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index 7d8dbf2..462be27 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -499,8 +499,10 @@ int perf_session_queue_event(struct perf_session *s, union perf_event *event, if (!timestamp || timestamp == ~0ULL) return -ETIME; - if (timestamp < s->ordered_events.last_flush) { + if (timestamp < oe->last_flush) { printf("Warning: Timestamp below last timeslice flush\n"); + pr_oe_time(timestamp, "out of order event"); + pr_oe_time(oe->last_flush, "last flush"); return -EINVAL; } -- cgit v1.1 From b0a45203a75a800015828ac89f2945981019b65b Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Thu, 12 Jun 2014 09:50:11 +0200 Subject: perf tools: Allow out of order messages in forced flush In forced flush (OE_FLUSH__HALF) we break the rules of the flush timestamp via PERF_RECORD_FINISHED_ROUND event, so we could get out of order event. Do not force error in this case plus changing the output warning to use WARN_ONCE. Signed-off-by: Jiri Olsa Acked-by: David Ahern Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jean Pihet Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/n/tip-8q8794a8nlmpd1u8xrqmcyd2@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/ordered-events.c | 4 ++++ tools/perf/util/ordered-events.h | 2 ++ tools/perf/util/session.c | 12 +++++++++--- 3 files changed, 15 insertions(+), 3 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/ordered-events.c b/tools/perf/util/ordered-events.c index 8a8aeab..706ce1a 100644 --- a/tools/perf/util/ordered-events.c +++ b/tools/perf/util/ordered-events.c @@ -169,6 +169,7 @@ int ordered_events__flush(struct perf_session *s, struct perf_tool *tool, { struct ordered_events *oe = &s->ordered_events; static const char * const str[] = { + "NONE", "FINAL", "ROUND", "HALF ", @@ -198,6 +199,7 @@ int ordered_events__flush(struct perf_session *s, struct perf_tool *tool, } case OE_FLUSH__ROUND: + case OE_FLUSH__NONE: default: break; }; @@ -211,6 +213,8 @@ int ordered_events__flush(struct perf_session *s, struct perf_tool *tool, if (!err) { if (how == OE_FLUSH__ROUND) oe->next_flush = oe->max_timestamp; + + oe->last_flush_type = how; } pr_oe_time(oe->next_flush, "next_flush - ordered_events__flush POST %s, nr_events %u\n", diff --git a/tools/perf/util/ordered-events.h b/tools/perf/util/ordered-events.h index 2ce847f..3b2f205 100644 --- a/tools/perf/util/ordered-events.h +++ b/tools/perf/util/ordered-events.h @@ -14,6 +14,7 @@ struct ordered_event { }; enum oe_flush { + OE_FLUSH__NONE, OE_FLUSH__FINAL, OE_FLUSH__ROUND, OE_FLUSH__HALF, @@ -32,6 +33,7 @@ struct ordered_events { struct ordered_event *last; int buffer_idx; unsigned int nr_events; + enum oe_flush last_flush_type; }; struct ordered_event *ordered_events__new(struct ordered_events *oe, u64 timestamp); diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index 462be27..7e27f1e 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -14,6 +14,7 @@ #include "util.h" #include "cpumap.h" #include "perf_regs.h" +#include "asm/bug.h" static int perf_session__open(struct perf_session *session) { @@ -500,10 +501,15 @@ int perf_session_queue_event(struct perf_session *s, union perf_event *event, return -ETIME; if (timestamp < oe->last_flush) { - printf("Warning: Timestamp below last timeslice flush\n"); + WARN_ONCE(1, "Timestamp below last timeslice flush\n"); + pr_oe_time(timestamp, "out of order event"); - pr_oe_time(oe->last_flush, "last flush"); - return -EINVAL; + pr_oe_time(oe->last_flush, "last flush, last_flush_type %d\n", + oe->last_flush_type); + + /* We could get out of order messages after forced flush. */ + if (oe->last_flush_type != OE_FLUSH__HALF) + return -EINVAL; } new = ordered_events__new(oe, timestamp); -- cgit v1.1 From 63914aca8f7e7a75d0ee027af7b1755c69cc1e2c Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Fri, 1 Aug 2014 17:46:54 +0200 Subject: perf tools: Show better error message in case we fail to open counters due to EBUSY error Showing better error message in case we fail to open counters due to the EBUSY error. If we detect oprofile daemon process running, we now display following message for EBUSY error: $ perf record ls Error: The PMU counters are busy/taken by another profiler. We found oprofile daemon running, please stop it and try again. In case oprofiled was not detected the current error message stays: $ perf record ls Error: The sys_perf_event_open() syscall returned with 16 (Device or resource busy) for event (cycles). /bin/dmesg may provide additional information. No CONFIG_PERF_EVENTS=y kernel support configured? Also changing PERF_FLAG_FD_CLOEXEC detection code not to display error in case of EBUSY error, as it currently does: $ perf record ls Error: perf_event_open(..., PERF_FLAG_FD_CLOEXEC) failed with unexpected error 16 (Device or resource busy) perf_event_open(..., 0) failed unexpectedly with error 16 (Device or resource busy) The PMU counters are busy/taken by another profiler. We found oprofile daemon running, please stop it and try again. Signed-off-by: Jiri Olsa Cc: Adrian Hunter Cc: David Ahern Cc: Frederic Weisbecker Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Cc: William Cohen Cc: Yann Droneaud Link: http://lkml.kernel.org/r/1406908014-8312-1-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/cloexec.c | 4 ++-- tools/perf/util/evsel.c | 6 ++++++ tools/perf/util/util.c | 36 ++++++++++++++++++++++++++++++++++++ tools/perf/util/util.h | 1 + 4 files changed, 45 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/cloexec.c b/tools/perf/util/cloexec.c index c5d05ec..dede0c3 100644 --- a/tools/perf/util/cloexec.c +++ b/tools/perf/util/cloexec.c @@ -25,7 +25,7 @@ static int perf_flag_probe(void) return 1; } - WARN_ONCE(err != EINVAL, + WARN_ONCE(err != EINVAL && err != EBUSY, "perf_event_open(..., PERF_FLAG_FD_CLOEXEC) failed with unexpected error %d (%s)\n", err, strerror(err)); @@ -33,7 +33,7 @@ static int perf_flag_probe(void) fd = sys_perf_event_open(&attr, 0, -1, -1, 0); err = errno; - if (WARN_ONCE(fd < 0, + if (WARN_ONCE(fd < 0 && err != EBUSY, "perf_event_open(..., 0) failed unexpectedly with error %d (%s)\n", err, strerror(err))) return -1; diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index 92e5235..0c8919d 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -2039,6 +2039,12 @@ int perf_evsel__open_strerror(struct perf_evsel *evsel, struct target *target, "No APIC? If so then you can boot the kernel with the \"lapic\" boot parameter to force-enable it."); #endif break; + case EBUSY: + if (find_process("oprofiled")) + return scnprintf(msg, size, + "The PMU counters are busy/taken by another profiler.\n" + "We found oprofile daemon running, please stop it and try again."); + break; default: break; } diff --git a/tools/perf/util/util.c b/tools/perf/util/util.c index e52e746..b82a93c 100644 --- a/tools/perf/util/util.c +++ b/tools/perf/util/util.c @@ -536,3 +536,39 @@ void mem_bswap_64(void *src, int byte_size) ++m; } } + +bool find_process(const char *name) +{ + size_t len = strlen(name); + DIR *dir; + struct dirent *d; + int ret = -1; + + dir = opendir(procfs__mountpoint()); + if (!dir) + return -1; + + /* Walk through the directory. */ + while (ret && (d = readdir(dir)) != NULL) { + char path[PATH_MAX]; + char *data; + size_t size; + + if ((d->d_type != DT_DIR) || + !strcmp(".", d->d_name) || + !strcmp("..", d->d_name)) + continue; + + scnprintf(path, sizeof(path), "%s/%s/comm", + procfs__mountpoint(), d->d_name); + + if (filename__read_str(path, &data, &size)) + continue; + + ret = strncmp(name, data, len); + free(data); + } + + closedir(dir); + return ret ? false : true; +} diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h index 38af775..03a1ea2 100644 --- a/tools/perf/util/util.h +++ b/tools/perf/util/util.h @@ -346,4 +346,5 @@ void mem_bswap_64(void *src, int byte_size); void mem_bswap_32(void *src, int byte_size); const char *get_filename_for_perf_kvm(void); +bool find_process(const char *name); #endif /* GIT_COMPAT_UTIL_H */ -- cgit v1.1 From 64c40908938953d7afa90e9363327875286349e5 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Fri, 1 Aug 2014 14:59:31 +0900 Subject: perf kmem: Do not ignore mmap events The perf kmem command didn't process mmap events for some unknown reason and it instead gets symbol info from a running kernel. This is problematic if perf kmem record was run on a different kernel. This patch adds the mmap event handlers and reverts the commit e727ca73f85d ("perf kmem: Resolve kernel symbols again"). Signed-off-by: Namhyung Kim Cc: Ingo Molnar Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1406872771-23933-1-git-send-email-namhyung@kernel.org [ Fixed up merge conflict with Jiri's ordered_events rename patch set ] Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-kmem.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-kmem.c b/tools/perf/builtin-kmem.c index b572111..84b8239 100644 --- a/tools/perf/builtin-kmem.c +++ b/tools/perf/builtin-kmem.c @@ -256,6 +256,8 @@ static int process_sample_event(struct perf_tool *tool __maybe_unused, static struct perf_tool perf_kmem = { .sample = process_sample_event, .comm = perf_event__process_comm, + .mmap = perf_event__process_mmap, + .mmap2 = perf_event__process_mmap2, .ordered_events = true, }; @@ -424,9 +426,6 @@ static int __cmd_kmem(void) if (session == NULL) return -ENOMEM; - if (perf_session__create_kernel_maps(session) < 0) - goto out_delete; - if (!perf_session__has_traces(session, "kmem record")) goto out_delete; -- cgit v1.1 From 56c7d79e49776084b852e451bda5f59dc3bcf894 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Tue, 29 Jul 2014 15:57:19 +0900 Subject: perf tools: Fix make PYTHON override Thomas reported that make PYTHON=python2 is not work on some systems. I can reproduce it on my ArchLinux box too. This is because it's overridden by config/feature-checks/Makefile regardless of PYTHON setting. I guess it's a bug slipped into during the feature checking change. Actually, we don't need to check python-config in the feature-checks. We can just pass appropriate FEATURE_CHECK_*FLAGS. Reported-by: Thomas Ilsche Signed-off-by: Namhyung Kim Tested-by: Thomas Ilsche Cc: Ingo Molnar Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Thomas Ilsche Link: http://lkml.kernel.org/r/1406617040-26909-1-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/config/Makefile | 34 ++++++++++++++++++++----------- tools/perf/config/feature-checks/Makefile | 18 ++-------------- 2 files changed, 24 insertions(+), 28 deletions(-) (limited to 'tools') diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile index 1f67aa0..e05d8f9 100644 --- a/tools/perf/config/Makefile +++ b/tools/perf/config/Makefile @@ -120,6 +120,23 @@ ifdef PARSER_DEBUG CFLAGS += -DPARSER_DEBUG endif +ifndef NO_LIBPYTHON + override PYTHON := \ + $(call get-executable-or-default,PYTHON,python) + override PYTHON_CONFIG := \ + $(call get-executable-or-default,PYTHON_CONFIG,$(PYTHON)-config) + + PYTHON_CONFIG_SQ := $(call shell-sq,$(PYTHON_CONFIG)) + + PYTHON_EMBED_LDOPTS := $(shell $(PYTHON_CONFIG_SQ) --ldflags 2>/dev/null) + PYTHON_EMBED_CCOPTS := $(shell $(PYTHON_CONFIG_SQ) --cflags 2>/dev/null) + + FEATURE_CHECK_CFLAGS-libpython := $(PYTHON_EMBED_CCOPTS) + FEATURE_CHECK_LDFLAGS-libpython := $(PYTHON_EMBED_LDOPTS) + FEATURE_CHECK_CFLAGS-libpython-version := $(PYTHON_EMBED_CCOPTS) + FEATURE_CHECK_LDFLAGS-libpython-version := $(PYTHON_EMBED_LDOPTS) +endif + CFLAGS += -fno-omit-frame-pointer CFLAGS += -ggdb3 CFLAGS += -funwind-tables @@ -482,21 +499,14 @@ define disable-python_code NO_LIBPYTHON := 1 endef -override PYTHON := \ - $(call get-executable-or-default,PYTHON,python) - -ifndef PYTHON - $(call disable-python,python interpreter) +ifdef NO_LIBPYTHON + $(call disable-python) else - PYTHON_WORD := $(call shell-wordify,$(PYTHON)) - - ifdef NO_LIBPYTHON - $(call disable-python) + ifndef PYTHON + $(call disable-python,python interpreter) else - - override PYTHON_CONFIG := \ - $(call get-executable-or-default,PYTHON_CONFIG,$(PYTHON)-config) + PYTHON_WORD := $(call shell-wordify,$(PYTHON)) ifndef PYTHON_CONFIG $(call disable-python,python-config tool) diff --git a/tools/perf/config/feature-checks/Makefile b/tools/perf/config/feature-checks/Makefile index 6088f8d..72ab298 100644 --- a/tools/perf/config/feature-checks/Makefile +++ b/tools/perf/config/feature-checks/Makefile @@ -101,25 +101,11 @@ FLAGS_PERL_EMBED=$(PERL_EMBED_CCOPTS) $(PERL_EMBED_LDOPTS) test-libperl.bin: $(BUILD) $(FLAGS_PERL_EMBED) -override PYTHON := python -override PYTHON_CONFIG := python-config - -escape-for-shell-sq = $(subst ','\'',$(1)) -shell-sq = '$(escape-for-shell-sq)' - -PYTHON_CONFIG_SQ = $(call shell-sq,$(PYTHON_CONFIG)) - -PYTHON_EMBED_LDOPTS = $(shell $(PYTHON_CONFIG_SQ) --ldflags 2>/dev/null) -PYTHON_EMBED_LDFLAGS = $(call strip-libs,$(PYTHON_EMBED_LDOPTS)) -PYTHON_EMBED_LIBADD = $(call grep-libs,$(PYTHON_EMBED_LDOPTS)) -PYTHON_EMBED_CCOPTS = $(shell $(PYTHON_CONFIG_SQ) --cflags 2>/dev/null) -FLAGS_PYTHON_EMBED = $(PYTHON_EMBED_CCOPTS) $(PYTHON_EMBED_LDOPTS) - test-libpython.bin: - $(BUILD) $(FLAGS_PYTHON_EMBED) + $(BUILD) test-libpython-version.bin: - $(BUILD) $(FLAGS_PYTHON_EMBED) + $(BUILD) test-libbfd.bin: $(BUILD) -DPACKAGE='"perf"' -lbfd -lz -liberty -ldl -- cgit v1.1 From 8246de88e95ddef7508f5601d7af85c3ab9e476b Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Thu, 31 Jul 2014 14:47:35 +0900 Subject: perf tools: Left-align output contents Now perf left-aligns column headers but the contents does not. It should have same alignment. This requires a change in pid sort key - it consists of two part (pid and comm). As length of comm can be vary it'd be better to change the order of them. Thanks to Jiri Olsa for pointing this out. Signed-off-by: Namhyung Kim Cc: Ingo Molnar Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1406785662-5534-2-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/sort.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c index 14e5a03..eda9ee8 100644 --- a/tools/perf/util/sort.c +++ b/tools/perf/util/sort.c @@ -70,12 +70,12 @@ static int hist_entry__thread_snprintf(struct hist_entry *he, char *bf, size_t size, unsigned int width) { const char *comm = thread__comm_str(he->thread); - return repsep_snprintf(bf, size, "%*s:%5d", width - 6, - comm ?: "", he->thread->tid); + return repsep_snprintf(bf, size, "%5d:%-*s", he->thread->tid, + width - 6, comm ?: ""); } struct sort_entry sort_thread = { - .se_header = "Command: Pid", + .se_header = " Pid:Command", .se_cmp = sort__thread_cmp, .se_snprintf = hist_entry__thread_snprintf, .se_width_idx = HISTC_THREAD, @@ -106,7 +106,7 @@ sort__comm_sort(struct hist_entry *left, struct hist_entry *right) static int hist_entry__comm_snprintf(struct hist_entry *he, char *bf, size_t size, unsigned int width) { - return repsep_snprintf(bf, size, "%*s", width, comm__str(he->comm)); + return repsep_snprintf(bf, size, "%-*s", width, comm__str(he->comm)); } struct sort_entry sort_comm = { @@ -305,7 +305,7 @@ static int hist_entry__srcline_snprintf(struct hist_entry *he, char *bf, size_t size, unsigned int width __maybe_unused) { - return repsep_snprintf(bf, size, "%s", he->srcline); + return repsep_snprintf(bf, size, "%-s", he->srcline); } struct sort_entry sort_srcline = { -- cgit v1.1 From d675107ce6fa988102851e0b0ef06e46c8aa7ac6 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Thu, 31 Jul 2014 14:47:36 +0900 Subject: perf tools: Make __hpp__fmt() receive an additional len argument So that it can properly handle alignment requirements later. To do that, add percent_color_len_snprintf() fucntion to help coloring of overhead columns. Signed-off-by: Namhyung Kim Cc: Ingo Molnar Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1406785662-5534-3-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/ui/browsers/hists.c | 14 ++++++++------ tools/perf/ui/gtk/hists.c | 8 +++++--- tools/perf/ui/hist.c | 43 +++++++++++++++++++++--------------------- tools/perf/util/color.c | 16 ++++++++++++++++ tools/perf/util/color.h | 1 + tools/perf/util/hist.h | 4 ++-- 6 files changed, 54 insertions(+), 32 deletions(-) (limited to 'tools') diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c index a94b11fc..02507ba 100644 --- a/tools/perf/ui/browsers/hists.c +++ b/tools/perf/ui/browsers/hists.c @@ -653,17 +653,18 @@ struct hpp_arg { static int __hpp__slsmg_color_printf(struct perf_hpp *hpp, const char *fmt, ...) { struct hpp_arg *arg = hpp->ptr; - int ret; + int ret, len; va_list args; double percent; va_start(args, fmt); + len = va_arg(args, int); percent = va_arg(args, double); va_end(args); ui_browser__set_percent_color(arg->b, percent, arg->current_entry); - ret = scnprintf(hpp->buf, hpp->size, fmt, percent); + ret = scnprintf(hpp->buf, hpp->size, fmt, len, percent); slsmg_printf("%s", hpp->buf); advance_hpp(hpp, ret); @@ -681,7 +682,7 @@ hist_browser__hpp_color_##_type(struct perf_hpp_fmt *fmt __maybe_unused,\ struct perf_hpp *hpp, \ struct hist_entry *he) \ { \ - return __hpp__fmt(hpp, he, __hpp_get_##_field, " %6.2f%%", \ + return __hpp__fmt(hpp, he, __hpp_get_##_field, " %*.2f%%", 6, \ __hpp__slsmg_color_printf, true); \ } @@ -697,13 +698,14 @@ hist_browser__hpp_color_##_type(struct perf_hpp_fmt *fmt __maybe_unused,\ struct hist_entry *he) \ { \ if (!symbol_conf.cumulate_callchain) { \ - int ret = scnprintf(hpp->buf, hpp->size, "%8s", "N/A"); \ + int ret = scnprintf(hpp->buf, hpp->size, \ + "%*s", 8, "N/A"); \ slsmg_printf("%s", hpp->buf); \ \ return ret; \ } \ - return __hpp__fmt(hpp, he, __hpp_get_acc_##_field, " %6.2f%%", \ - __hpp__slsmg_color_printf, true); \ + return __hpp__fmt(hpp, he, __hpp_get_acc_##_field, " %*.2f%%", \ + 6, __hpp__slsmg_color_printf, true); \ } __HPP_COLOR_PERCENT_FN(overhead, period) diff --git a/tools/perf/ui/gtk/hists.c b/tools/perf/ui/gtk/hists.c index 6ca60e4..91f6cd7 100644 --- a/tools/perf/ui/gtk/hists.c +++ b/tools/perf/ui/gtk/hists.c @@ -11,6 +11,7 @@ static int __percent_color_snprintf(struct perf_hpp *hpp, const char *fmt, ...) { int ret = 0; + int len; va_list args; double percent; const char *markup; @@ -18,6 +19,7 @@ static int __percent_color_snprintf(struct perf_hpp *hpp, const char *fmt, ...) size_t size = hpp->size; va_start(args, fmt); + len = va_arg(args, int); percent = va_arg(args, double); va_end(args); @@ -25,7 +27,7 @@ static int __percent_color_snprintf(struct perf_hpp *hpp, const char *fmt, ...) if (markup) ret += scnprintf(buf, size, markup); - ret += scnprintf(buf + ret, size - ret, fmt, percent); + ret += scnprintf(buf + ret, size - ret, fmt, len, percent); if (markup) ret += scnprintf(buf + ret, size - ret, ""); @@ -43,7 +45,7 @@ static int perf_gtk__hpp_color_##_type(struct perf_hpp_fmt *fmt __maybe_unused, struct perf_hpp *hpp, \ struct hist_entry *he) \ { \ - return __hpp__fmt(hpp, he, he_get_##_field, " %6.2f%%", \ + return __hpp__fmt(hpp, he, he_get_##_field, " %*.2f%%", 6, \ __percent_color_snprintf, true); \ } @@ -57,7 +59,7 @@ static int perf_gtk__hpp_color_##_type(struct perf_hpp_fmt *fmt __maybe_unused, struct perf_hpp *hpp, \ struct hist_entry *he) \ { \ - return __hpp__fmt_acc(hpp, he, he_get_acc_##_field, " %6.2f%%", \ + return __hpp__fmt_acc(hpp, he, he_get_acc_##_field, " %*.2f%%", 6, \ __percent_color_snprintf, true); \ } diff --git a/tools/perf/ui/hist.c b/tools/perf/ui/hist.c index 498adb2..c6cffbd 100644 --- a/tools/perf/ui/hist.c +++ b/tools/perf/ui/hist.c @@ -16,7 +16,7 @@ }) int __hpp__fmt(struct perf_hpp *hpp, struct hist_entry *he, - hpp_field_fn get_field, const char *fmt, + hpp_field_fn get_field, const char *fmt, int len, hpp_snprint_fn print_fn, bool fmt_percent) { int ret; @@ -32,9 +32,9 @@ int __hpp__fmt(struct perf_hpp *hpp, struct hist_entry *he, if (total) percent = 100.0 * get_field(he) / total; - ret = hpp__call_print_fn(hpp, print_fn, fmt, percent); + ret = hpp__call_print_fn(hpp, print_fn, fmt, len, percent); } else - ret = hpp__call_print_fn(hpp, print_fn, fmt, get_field(he)); + ret = hpp__call_print_fn(hpp, print_fn, fmt, len, get_field(he)); if (perf_evsel__is_group_event(evsel)) { int prev_idx, idx_delta; @@ -60,19 +60,19 @@ int __hpp__fmt(struct perf_hpp *hpp, struct hist_entry *he, */ if (fmt_percent) { ret += hpp__call_print_fn(hpp, print_fn, - fmt, 0.0); + fmt, len, 0.0); } else { ret += hpp__call_print_fn(hpp, print_fn, - fmt, 0ULL); + fmt, len, 0ULL); } } if (fmt_percent) { - ret += hpp__call_print_fn(hpp, print_fn, fmt, + ret += hpp__call_print_fn(hpp, print_fn, fmt, len, 100.0 * period / total); } else { ret += hpp__call_print_fn(hpp, print_fn, fmt, - period); + len, period); } prev_idx = perf_evsel__group_idx(evsel); @@ -86,10 +86,10 @@ int __hpp__fmt(struct perf_hpp *hpp, struct hist_entry *he, */ if (fmt_percent) { ret += hpp__call_print_fn(hpp, print_fn, - fmt, 0.0); + fmt, len, 0.0); } else { ret += hpp__call_print_fn(hpp, print_fn, - fmt, 0ULL); + fmt, len, 0ULL); } } } @@ -105,7 +105,7 @@ int __hpp__fmt(struct perf_hpp *hpp, struct hist_entry *he, } int __hpp__fmt_acc(struct perf_hpp *hpp, struct hist_entry *he, - hpp_field_fn get_field, const char *fmt, + hpp_field_fn get_field, const char *fmt, int len, hpp_snprint_fn print_fn, bool fmt_percent) { if (!symbol_conf.cumulate_callchain) { @@ -113,7 +113,7 @@ int __hpp__fmt_acc(struct perf_hpp *hpp, struct hist_entry *he, fmt_percent ? 8 : 12, "N/A"); } - return __hpp__fmt(hpp, he, get_field, fmt, print_fn, fmt_percent); + return __hpp__fmt(hpp, he, get_field, fmt, len, print_fn, fmt_percent); } static int field_cmp(u64 field_a, u64 field_b) @@ -221,11 +221,12 @@ static int hpp_color_scnprintf(struct perf_hpp *hpp, const char *fmt, ...) va_list args; ssize_t ssize = hpp->size; double percent; - int ret; + int ret, len; va_start(args, fmt); + len = va_arg(args, int); percent = va_arg(args, double); - ret = value_color_snprintf(hpp->buf, hpp->size, fmt, percent); + ret = percent_color_len_snprintf(hpp->buf, hpp->size, fmt, len, percent); va_end(args); return (ret >= ssize) ? (ssize - 1) : ret; @@ -253,7 +254,7 @@ static u64 he_get_##_field(struct hist_entry *he) \ static int hpp__color_##_type(struct perf_hpp_fmt *fmt __maybe_unused, \ struct perf_hpp *hpp, struct hist_entry *he) \ { \ - return __hpp__fmt(hpp, he, he_get_##_field, " %6.2f%%", \ + return __hpp__fmt(hpp, he, he_get_##_field, " %*.2f%%", 6, \ hpp_color_scnprintf, true); \ } @@ -261,8 +262,8 @@ static int hpp__color_##_type(struct perf_hpp_fmt *fmt __maybe_unused, \ static int hpp__entry_##_type(struct perf_hpp_fmt *_fmt __maybe_unused, \ struct perf_hpp *hpp, struct hist_entry *he) \ { \ - const char *fmt = symbol_conf.field_sep ? " %.2f" : " %6.2f%%"; \ - return __hpp__fmt(hpp, he, he_get_##_field, fmt, \ + int len = symbol_conf.field_sep ? 1 : 6; \ + return __hpp__fmt(hpp, he, he_get_##_field, " %*.2f%%", len, \ hpp_entry_scnprintf, true); \ } @@ -281,7 +282,7 @@ static u64 he_get_acc_##_field(struct hist_entry *he) \ static int hpp__color_##_type(struct perf_hpp_fmt *fmt __maybe_unused, \ struct perf_hpp *hpp, struct hist_entry *he) \ { \ - return __hpp__fmt_acc(hpp, he, he_get_acc_##_field, " %6.2f%%", \ + return __hpp__fmt_acc(hpp, he, he_get_acc_##_field, " %*.2f%%", 6, \ hpp_color_scnprintf, true); \ } @@ -289,8 +290,8 @@ static int hpp__color_##_type(struct perf_hpp_fmt *fmt __maybe_unused, \ static int hpp__entry_##_type(struct perf_hpp_fmt *_fmt __maybe_unused, \ struct perf_hpp *hpp, struct hist_entry *he) \ { \ - const char *fmt = symbol_conf.field_sep ? " %.2f" : " %6.2f%%"; \ - return __hpp__fmt_acc(hpp, he, he_get_acc_##_field, fmt, \ + int len = symbol_conf.field_sep ? 1 : 6; \ + return __hpp__fmt_acc(hpp, he, he_get_##_field, " %*.2f%%", len, \ hpp_entry_scnprintf, true); \ } @@ -309,8 +310,8 @@ static u64 he_get_raw_##_field(struct hist_entry *he) \ static int hpp__entry_##_type(struct perf_hpp_fmt *_fmt __maybe_unused, \ struct perf_hpp *hpp, struct hist_entry *he) \ { \ - const char *fmt = symbol_conf.field_sep ? " %"PRIu64 : " %11"PRIu64; \ - return __hpp__fmt(hpp, he, he_get_raw_##_field, fmt, \ + int len = symbol_conf.field_sep ? 1 : 11; \ + return __hpp__fmt(hpp, he, he_get_raw_##_field, " %*"PRIu64, len, \ hpp_entry_scnprintf, false); \ } diff --git a/tools/perf/util/color.c b/tools/perf/util/color.c index 87b8672..f465418 100644 --- a/tools/perf/util/color.c +++ b/tools/perf/util/color.c @@ -335,3 +335,19 @@ int percent_color_snprintf(char *bf, size_t size, const char *fmt, ...) va_end(args); return value_color_snprintf(bf, size, fmt, percent); } + +int percent_color_len_snprintf(char *bf, size_t size, const char *fmt, ...) +{ + va_list args; + int len; + double percent; + const char *color; + + va_start(args, fmt); + len = va_arg(args, int); + percent = va_arg(args, double); + va_end(args); + + color = get_percent_color(percent); + return color_snprintf(bf, size, color, fmt, len, percent); +} diff --git a/tools/perf/util/color.h b/tools/perf/util/color.h index 7ff30a6..0a594b8 100644 --- a/tools/perf/util/color.h +++ b/tools/perf/util/color.h @@ -41,6 +41,7 @@ int color_fprintf_ln(FILE *fp, const char *color, const char *fmt, ...); int color_fwrite_lines(FILE *fp, const char *color, size_t count, const char *buf); int value_color_snprintf(char *bf, size_t size, const char *fmt, double value); int percent_color_snprintf(char *bf, size_t size, const char *fmt, ...); +int percent_color_len_snprintf(char *bf, size_t size, const char *fmt, ...); int percent_color_fprintf(FILE *fp, const char *fmt, double percent); const char *get_percent_color(double percent); diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h index 742f49a..13d074d 100644 --- a/tools/perf/util/hist.h +++ b/tools/perf/util/hist.h @@ -267,10 +267,10 @@ typedef int (*hpp_callback_fn)(struct perf_hpp *hpp, bool front); typedef int (*hpp_snprint_fn)(struct perf_hpp *hpp, const char *fmt, ...); int __hpp__fmt(struct perf_hpp *hpp, struct hist_entry *he, - hpp_field_fn get_field, const char *fmt, + hpp_field_fn get_field, const char *fmt, int len, hpp_snprint_fn print_fn, bool fmt_percent); int __hpp__fmt_acc(struct perf_hpp *hpp, struct hist_entry *he, - hpp_field_fn get_field, const char *fmt, + hpp_field_fn get_field, const char *fmt, int len, hpp_snprint_fn print_fn, bool fmt_percent); static inline void advance_hpp(struct perf_hpp *hpp, int inc) -- cgit v1.1 From e0d66c74b09f5103eef441a98b68056c4dae4cac Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Thu, 31 Jul 2014 14:47:37 +0900 Subject: perf tools: Save column length in perf_hpp_fmt Save column length in the hpp format and pass it to print functions. This is a preparation for users to control column width in the output. Signed-off-by: Namhyung Kim Cc: Ingo Molnar Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1406785662-5534-4-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/ui/browsers/hists.c | 2 +- tools/perf/ui/hist.c | 135 +++++++++++++++++++++++++++-------------- tools/perf/util/hist.h | 2 + tools/perf/util/sort.c | 3 +- 4 files changed, 94 insertions(+), 48 deletions(-) (limited to 'tools') diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c index 02507ba..c1d8d39 100644 --- a/tools/perf/ui/browsers/hists.c +++ b/tools/perf/ui/browsers/hists.c @@ -849,7 +849,7 @@ static int hists__scnprintf_headers(char *buf, size_t size, struct hists *hists) if (perf_hpp__should_skip(fmt)) continue; - /* We need to add the length of the columns header. */ + /* We need to ensure length of the columns header. */ perf_hpp__reset_width(fmt, hists); ret = fmt->header(fmt, &dummy_hpp, hists_to_evsel(hists)); diff --git a/tools/perf/ui/hist.c b/tools/perf/ui/hist.c index c6cffbd..e28ca97 100644 --- a/tools/perf/ui/hist.c +++ b/tools/perf/ui/hist.c @@ -110,7 +110,7 @@ int __hpp__fmt_acc(struct perf_hpp *hpp, struct hist_entry *he, { if (!symbol_conf.cumulate_callchain) { return snprintf(hpp->buf, hpp->size, "%*s", - fmt_percent ? 8 : 12, "N/A"); + fmt_percent ? len + 2 : len + 1, "N/A"); } return __hpp__fmt(hpp, he, get_field, fmt, len, print_fn, fmt_percent); @@ -190,32 +190,31 @@ static int __hpp__sort_acc(struct hist_entry *a, struct hist_entry *b, return ret; } -#define __HPP_HEADER_FN(_type, _str, _min_width, _unit_width) \ -static int hpp__header_##_type(struct perf_hpp_fmt *fmt __maybe_unused, \ - struct perf_hpp *hpp, \ - struct perf_evsel *evsel) \ -{ \ - int len = _min_width; \ - \ - if (symbol_conf.event_group) \ - len = max(len, evsel->nr_members * _unit_width); \ - \ - return scnprintf(hpp->buf, hpp->size, "%*s", len, _str); \ -} - -#define __HPP_WIDTH_FN(_type, _min_width, _unit_width) \ -static int hpp__width_##_type(struct perf_hpp_fmt *fmt __maybe_unused, \ +#define __HPP_WIDTH_FN(_type, _str) \ +static int hpp__width_##_type(struct perf_hpp_fmt *fmt, \ struct perf_hpp *hpp __maybe_unused, \ struct perf_evsel *evsel) \ { \ - int len = _min_width; \ + int len = fmt->len; \ \ if (symbol_conf.event_group) \ - len = max(len, evsel->nr_members * _unit_width); \ + len = max(len, evsel->nr_members * len); \ + \ + if (len < (int)strlen(_str)) \ + len = strlen(_str); \ \ return len; \ } +#define __HPP_HEADER_FN(_type, _str) \ +static int hpp__header_##_type(struct perf_hpp_fmt *fmt, \ + struct perf_hpp *hpp, \ + struct perf_evsel *evsel) \ +{ \ + int len = hpp__width_##_type(fmt, hpp, evsel); \ + return scnprintf(hpp->buf, hpp->size, "%*s", len, _str); \ +} + static int hpp_color_scnprintf(struct perf_hpp *hpp, const char *fmt, ...) { va_list args; @@ -251,18 +250,19 @@ static u64 he_get_##_field(struct hist_entry *he) \ return he->stat._field; \ } \ \ -static int hpp__color_##_type(struct perf_hpp_fmt *fmt __maybe_unused, \ +static int hpp__color_##_type(struct perf_hpp_fmt *fmt, \ struct perf_hpp *hpp, struct hist_entry *he) \ { \ - return __hpp__fmt(hpp, he, he_get_##_field, " %*.2f%%", 6, \ + int len = fmt->len - 2; /* 2 for a space and a % sign */ \ + return __hpp__fmt(hpp, he, he_get_##_field, " %*.2f%%", len, \ hpp_color_scnprintf, true); \ } #define __HPP_ENTRY_PERCENT_FN(_type, _field) \ -static int hpp__entry_##_type(struct perf_hpp_fmt *_fmt __maybe_unused, \ +static int hpp__entry_##_type(struct perf_hpp_fmt *fmt, \ struct perf_hpp *hpp, struct hist_entry *he) \ { \ - int len = symbol_conf.field_sep ? 1 : 6; \ + int len = symbol_conf.field_sep ? 1 : fmt->len - 2; \ return __hpp__fmt(hpp, he, he_get_##_field, " %*.2f%%", len, \ hpp_entry_scnprintf, true); \ } @@ -279,18 +279,19 @@ static u64 he_get_acc_##_field(struct hist_entry *he) \ return he->stat_acc->_field; \ } \ \ -static int hpp__color_##_type(struct perf_hpp_fmt *fmt __maybe_unused, \ +static int hpp__color_##_type(struct perf_hpp_fmt *fmt, \ struct perf_hpp *hpp, struct hist_entry *he) \ { \ - return __hpp__fmt_acc(hpp, he, he_get_acc_##_field, " %*.2f%%", 6, \ + int len = fmt->len - 2; /* 2 for a space and a % sign */ \ + return __hpp__fmt_acc(hpp, he, he_get_acc_##_field, " %*.2f%%", len, \ hpp_color_scnprintf, true); \ } #define __HPP_ENTRY_ACC_PERCENT_FN(_type, _field) \ -static int hpp__entry_##_type(struct perf_hpp_fmt *_fmt __maybe_unused, \ +static int hpp__entry_##_type(struct perf_hpp_fmt *fmt, \ struct perf_hpp *hpp, struct hist_entry *he) \ { \ - int len = symbol_conf.field_sep ? 1 : 6; \ + int len = symbol_conf.field_sep ? 1 : fmt->len - 2; \ return __hpp__fmt_acc(hpp, he, he_get_##_field, " %*.2f%%", len, \ hpp_entry_scnprintf, true); \ } @@ -307,10 +308,10 @@ static u64 he_get_raw_##_field(struct hist_entry *he) \ return he->stat._field; \ } \ \ -static int hpp__entry_##_type(struct perf_hpp_fmt *_fmt __maybe_unused, \ +static int hpp__entry_##_type(struct perf_hpp_fmt *fmt, \ struct perf_hpp *hpp, struct hist_entry *he) \ { \ - int len = symbol_conf.field_sep ? 1 : 11; \ + int len = symbol_conf.field_sep ? 1 : fmt->len - 1; \ return __hpp__fmt(hpp, he, he_get_raw_##_field, " %*"PRIu64, len, \ hpp_entry_scnprintf, false); \ } @@ -322,37 +323,38 @@ static int64_t hpp__sort_##_type(struct hist_entry *a, struct hist_entry *b) \ } -#define HPP_PERCENT_FNS(_type, _str, _field, _min_width, _unit_width) \ -__HPP_HEADER_FN(_type, _str, _min_width, _unit_width) \ -__HPP_WIDTH_FN(_type, _min_width, _unit_width) \ +#define HPP_PERCENT_FNS(_type, _str, _field) \ +__HPP_WIDTH_FN(_type, _str) \ +__HPP_HEADER_FN(_type, _str) \ __HPP_COLOR_PERCENT_FN(_type, _field) \ __HPP_ENTRY_PERCENT_FN(_type, _field) \ __HPP_SORT_FN(_type, _field) -#define HPP_PERCENT_ACC_FNS(_type, _str, _field, _min_width, _unit_width)\ -__HPP_HEADER_FN(_type, _str, _min_width, _unit_width) \ -__HPP_WIDTH_FN(_type, _min_width, _unit_width) \ +#define HPP_PERCENT_ACC_FNS(_type, _str, _field) \ +__HPP_WIDTH_FN(_type, _str) \ +__HPP_HEADER_FN(_type, _str) \ __HPP_COLOR_ACC_PERCENT_FN(_type, _field) \ __HPP_ENTRY_ACC_PERCENT_FN(_type, _field) \ __HPP_SORT_ACC_FN(_type, _field) -#define HPP_RAW_FNS(_type, _str, _field, _min_width, _unit_width) \ -__HPP_HEADER_FN(_type, _str, _min_width, _unit_width) \ -__HPP_WIDTH_FN(_type, _min_width, _unit_width) \ +#define HPP_RAW_FNS(_type, _str, _field) \ +__HPP_WIDTH_FN(_type, _str) \ +__HPP_HEADER_FN(_type, _str) \ __HPP_ENTRY_RAW_FN(_type, _field) \ __HPP_SORT_RAW_FN(_type, _field) -__HPP_HEADER_FN(overhead_self, "Self", 8, 8) +__HPP_WIDTH_FN(overhead_self, "Self") +__HPP_HEADER_FN(overhead_self, "Self") -HPP_PERCENT_FNS(overhead, "Overhead", period, 8, 8) -HPP_PERCENT_FNS(overhead_sys, "sys", period_sys, 8, 8) -HPP_PERCENT_FNS(overhead_us, "usr", period_us, 8, 8) -HPP_PERCENT_FNS(overhead_guest_sys, "guest sys", period_guest_sys, 9, 8) -HPP_PERCENT_FNS(overhead_guest_us, "guest usr", period_guest_us, 9, 8) -HPP_PERCENT_ACC_FNS(overhead_acc, "Children", period, 8, 8) +HPP_PERCENT_FNS(overhead, "Overhead", period) +HPP_PERCENT_FNS(overhead_sys, "sys", period_sys) +HPP_PERCENT_FNS(overhead_us, "usr", period_us) +HPP_PERCENT_FNS(overhead_guest_sys, "guest sys", period_guest_sys) +HPP_PERCENT_FNS(overhead_guest_us, "guest usr", period_guest_us) +HPP_PERCENT_ACC_FNS(overhead_acc, "Children", period) -HPP_RAW_FNS(samples, "Samples", nr_events, 12, 12) -HPP_RAW_FNS(period, "Period", period, 12, 12) +HPP_RAW_FNS(samples, "Samples", nr_events) +HPP_RAW_FNS(period, "Period", period) static int64_t hpp__nop_cmp(struct hist_entry *a __maybe_unused, struct hist_entry *b __maybe_unused) @@ -453,6 +455,8 @@ void perf_hpp__init(void) perf_hpp__format[PERF_HPP__OVERHEAD].header = hpp__header_overhead_self; + perf_hpp__format[PERF_HPP__OVERHEAD].width = + hpp__width_overhead_self; } perf_hpp__column_enable(PERF_HPP__OVERHEAD); @@ -519,6 +523,7 @@ void perf_hpp__cancel_cumulate(void) perf_hpp__column_disable(PERF_HPP__OVERHEAD_ACC); perf_hpp__format[PERF_HPP__OVERHEAD].header = hpp__header_overhead; + perf_hpp__format[PERF_HPP__OVERHEAD].width = hpp__width_overhead; } void perf_hpp__setup_output_field(void) @@ -623,3 +628,41 @@ unsigned int hists__sort_list_width(struct hists *hists) return ret; } + +void perf_hpp__reset_width(struct perf_hpp_fmt *fmt, struct hists *hists) +{ + int idx; + + if (perf_hpp__is_sort_entry(fmt)) + return perf_hpp__reset_sort_width(fmt, hists); + + for (idx = 0; idx < PERF_HPP__MAX_INDEX; idx++) { + if (fmt == &perf_hpp__format[idx]) + break; + } + + if (idx == PERF_HPP__MAX_INDEX) + return; + + switch (idx) { + case PERF_HPP__OVERHEAD: + case PERF_HPP__OVERHEAD_SYS: + case PERF_HPP__OVERHEAD_US: + case PERF_HPP__OVERHEAD_ACC: + fmt->len = 8; + break; + + case PERF_HPP__OVERHEAD_GUEST_SYS: + case PERF_HPP__OVERHEAD_GUEST_US: + fmt->len = 9; + break; + + case PERF_HPP__SAMPLES: + case PERF_HPP__PERIOD: + fmt->len = 12; + break; + + default: + break; + } +} diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h index 13d074d..a7ae890 100644 --- a/tools/perf/util/hist.h +++ b/tools/perf/util/hist.h @@ -207,6 +207,7 @@ struct perf_hpp_fmt { struct list_head list; struct list_head sort_list; bool elide; + int len; }; extern struct list_head perf_hpp__list; @@ -261,6 +262,7 @@ static inline bool perf_hpp__should_skip(struct perf_hpp_fmt *format) } void perf_hpp__reset_width(struct perf_hpp_fmt *fmt, struct hists *hists); +void perf_hpp__reset_sort_width(struct perf_hpp_fmt *fmt, struct hists *hists); typedef u64 (*hpp_field_fn)(struct hist_entry *he); typedef int (*hpp_callback_fn)(struct perf_hpp *hpp, bool front); diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c index eda9ee8..a7f8a7b0 100644 --- a/tools/perf/util/sort.c +++ b/tools/perf/util/sort.c @@ -1194,7 +1194,7 @@ bool perf_hpp__same_sort_entry(struct perf_hpp_fmt *a, struct perf_hpp_fmt *b) return hse_a->se == hse_b->se; } -void perf_hpp__reset_width(struct perf_hpp_fmt *fmt, struct hists *hists) +void perf_hpp__reset_sort_width(struct perf_hpp_fmt *fmt, struct hists *hists) { struct hpp_sort_entry *hse; @@ -1265,6 +1265,7 @@ __sort_dimension__alloc_hpp(struct sort_dimension *sd) INIT_LIST_HEAD(&hse->hpp.list); INIT_LIST_HEAD(&hse->hpp.sort_list); hse->hpp.elide = false; + hse->hpp.len = 0; return hse; } -- cgit v1.1 From 5b5916696051b88e63f3726cc3db44bf9561bad9 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Thu, 31 Jul 2014 14:47:38 +0900 Subject: perf report: Honor column width setting Set column width and do not change it if user gives -w/--column-widths option. It'll truncate longer symbols than the width if exists. Signed-off-by: Namhyung Kim Cc: Ingo Molnar Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1406785662-5534-5-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/ui/browsers/hists.c | 18 +++++---- tools/perf/ui/gtk/hists.c | 10 ++--- tools/perf/ui/hist.c | 84 +++++++++++++++++++++++++++++------------- tools/perf/ui/stdio/hist.c | 4 +- tools/perf/util/hist.h | 14 ++++--- tools/perf/util/sort.c | 49 +++++++++++++++--------- 6 files changed, 116 insertions(+), 63 deletions(-) (limited to 'tools') diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c index c1d8d39..e07d4e8 100644 --- a/tools/perf/ui/browsers/hists.c +++ b/tools/perf/ui/browsers/hists.c @@ -678,12 +678,12 @@ static u64 __hpp_get_##_field(struct hist_entry *he) \ } \ \ static int \ -hist_browser__hpp_color_##_type(struct perf_hpp_fmt *fmt __maybe_unused,\ +hist_browser__hpp_color_##_type(struct perf_hpp_fmt *fmt, \ struct perf_hpp *hpp, \ struct hist_entry *he) \ { \ - return __hpp__fmt(hpp, he, __hpp_get_##_field, " %*.2f%%", 6, \ - __hpp__slsmg_color_printf, true); \ + return hpp__fmt(fmt, hpp, he, __hpp_get_##_field, " %*.2f%%", \ + __hpp__slsmg_color_printf, true); \ } #define __HPP_COLOR_ACC_PERCENT_FN(_type, _field) \ @@ -693,19 +693,20 @@ static u64 __hpp_get_acc_##_field(struct hist_entry *he) \ } \ \ static int \ -hist_browser__hpp_color_##_type(struct perf_hpp_fmt *fmt __maybe_unused,\ +hist_browser__hpp_color_##_type(struct perf_hpp_fmt *fmt, \ struct perf_hpp *hpp, \ struct hist_entry *he) \ { \ if (!symbol_conf.cumulate_callchain) { \ + int len = fmt->user_len ?: fmt->len; \ int ret = scnprintf(hpp->buf, hpp->size, \ - "%*s", 8, "N/A"); \ + "%*s", len, "N/A"); \ slsmg_printf("%s", hpp->buf); \ \ return ret; \ } \ - return __hpp__fmt(hpp, he, __hpp_get_acc_##_field, " %*.2f%%", \ - 6, __hpp__slsmg_color_printf, true); \ + return hpp__fmt(fmt, hpp, he, __hpp_get_acc_##_field, \ + " %*.2f%%", __hpp__slsmg_color_printf, true); \ } __HPP_COLOR_PERCENT_FN(overhead, period) @@ -1549,6 +1550,9 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events, memset(options, 0, sizeof(options)); + if (symbol_conf.col_width_list_str) + perf_hpp__set_user_width(symbol_conf.col_width_list_str); + while (1) { const struct thread *thread = NULL; const struct dso *dso = NULL; diff --git a/tools/perf/ui/gtk/hists.c b/tools/perf/ui/gtk/hists.c index 91f6cd7..897b2e1 100644 --- a/tools/perf/ui/gtk/hists.c +++ b/tools/perf/ui/gtk/hists.c @@ -41,12 +41,12 @@ static u64 he_get_##_field(struct hist_entry *he) \ return he->stat._field; \ } \ \ -static int perf_gtk__hpp_color_##_type(struct perf_hpp_fmt *fmt __maybe_unused, \ +static int perf_gtk__hpp_color_##_type(struct perf_hpp_fmt *fmt, \ struct perf_hpp *hpp, \ struct hist_entry *he) \ { \ - return __hpp__fmt(hpp, he, he_get_##_field, " %*.2f%%", 6, \ - __percent_color_snprintf, true); \ + return hpp__fmt(fmt, hpp, he, he_get_##_field, " %*.2f%%", \ + __percent_color_snprintf, true); \ } #define __HPP_COLOR_ACC_PERCENT_FN(_type, _field) \ @@ -59,8 +59,8 @@ static int perf_gtk__hpp_color_##_type(struct perf_hpp_fmt *fmt __maybe_unused, struct perf_hpp *hpp, \ struct hist_entry *he) \ { \ - return __hpp__fmt_acc(hpp, he, he_get_acc_##_field, " %*.2f%%", 6, \ - __percent_color_snprintf, true); \ + return hpp__fmt_acc(fmt, hpp, he, he_get_acc_##_field, " %*.2f%%", \ + __percent_color_snprintf, true); \ } __HPP_COLOR_PERCENT_FN(overhead, period) diff --git a/tools/perf/ui/hist.c b/tools/perf/ui/hist.c index e28ca97..b2d60a9 100644 --- a/tools/perf/ui/hist.c +++ b/tools/perf/ui/hist.c @@ -15,9 +15,9 @@ __ret; \ }) -int __hpp__fmt(struct perf_hpp *hpp, struct hist_entry *he, - hpp_field_fn get_field, const char *fmt, int len, - hpp_snprint_fn print_fn, bool fmt_percent) +static int __hpp__fmt(struct perf_hpp *hpp, struct hist_entry *he, + hpp_field_fn get_field, const char *fmt, int len, + hpp_snprint_fn print_fn, bool fmt_percent) { int ret; struct hists *hists = he->hists; @@ -104,16 +104,35 @@ int __hpp__fmt(struct perf_hpp *hpp, struct hist_entry *he, return ret; } -int __hpp__fmt_acc(struct perf_hpp *hpp, struct hist_entry *he, - hpp_field_fn get_field, const char *fmt, int len, - hpp_snprint_fn print_fn, bool fmt_percent) +int hpp__fmt(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp, + struct hist_entry *he, hpp_field_fn get_field, + const char *fmtstr, hpp_snprint_fn print_fn, bool fmt_percent) +{ + int len = fmt->user_len ?: fmt->len; + + if (symbol_conf.field_sep) { + return __hpp__fmt(hpp, he, get_field, fmtstr, 1, + print_fn, fmt_percent); + } + + if (fmt_percent) + len -= 2; /* 2 for a space and a % sign */ + else + len -= 1; + + return __hpp__fmt(hpp, he, get_field, fmtstr, len, print_fn, fmt_percent); +} + +int hpp__fmt_acc(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp, + struct hist_entry *he, hpp_field_fn get_field, + const char *fmtstr, hpp_snprint_fn print_fn, bool fmt_percent) { if (!symbol_conf.cumulate_callchain) { - return snprintf(hpp->buf, hpp->size, "%*s", - fmt_percent ? len + 2 : len + 1, "N/A"); + int len = fmt->user_len ?: fmt->len; + return snprintf(hpp->buf, hpp->size, " %*s", len - 1, "N/A"); } - return __hpp__fmt(hpp, he, get_field, fmt, len, print_fn, fmt_percent); + return hpp__fmt(fmt, hpp, he, get_field, fmtstr, print_fn, fmt_percent); } static int field_cmp(u64 field_a, u64 field_b) @@ -195,10 +214,10 @@ static int hpp__width_##_type(struct perf_hpp_fmt *fmt, \ struct perf_hpp *hpp __maybe_unused, \ struct perf_evsel *evsel) \ { \ - int len = fmt->len; \ + int len = fmt->user_len ?: fmt->len; \ \ if (symbol_conf.event_group) \ - len = max(len, evsel->nr_members * len); \ + len = max(len, evsel->nr_members * fmt->len); \ \ if (len < (int)strlen(_str)) \ len = strlen(_str); \ @@ -253,18 +272,16 @@ static u64 he_get_##_field(struct hist_entry *he) \ static int hpp__color_##_type(struct perf_hpp_fmt *fmt, \ struct perf_hpp *hpp, struct hist_entry *he) \ { \ - int len = fmt->len - 2; /* 2 for a space and a % sign */ \ - return __hpp__fmt(hpp, he, he_get_##_field, " %*.2f%%", len, \ - hpp_color_scnprintf, true); \ + return hpp__fmt(fmt, hpp, he, he_get_##_field, " %*.2f%%", \ + hpp_color_scnprintf, true); \ } #define __HPP_ENTRY_PERCENT_FN(_type, _field) \ static int hpp__entry_##_type(struct perf_hpp_fmt *fmt, \ struct perf_hpp *hpp, struct hist_entry *he) \ { \ - int len = symbol_conf.field_sep ? 1 : fmt->len - 2; \ - return __hpp__fmt(hpp, he, he_get_##_field, " %*.2f%%", len, \ - hpp_entry_scnprintf, true); \ + return hpp__fmt(fmt, hpp, he, he_get_##_field, " %*.2f%%", \ + hpp_entry_scnprintf, true); \ } #define __HPP_SORT_FN(_type, _field) \ @@ -282,18 +299,16 @@ static u64 he_get_acc_##_field(struct hist_entry *he) \ static int hpp__color_##_type(struct perf_hpp_fmt *fmt, \ struct perf_hpp *hpp, struct hist_entry *he) \ { \ - int len = fmt->len - 2; /* 2 for a space and a % sign */ \ - return __hpp__fmt_acc(hpp, he, he_get_acc_##_field, " %*.2f%%", len, \ - hpp_color_scnprintf, true); \ + return hpp__fmt_acc(fmt, hpp, he, he_get_acc_##_field, " %*.2f%%", \ + hpp_color_scnprintf, true); \ } #define __HPP_ENTRY_ACC_PERCENT_FN(_type, _field) \ static int hpp__entry_##_type(struct perf_hpp_fmt *fmt, \ struct perf_hpp *hpp, struct hist_entry *he) \ { \ - int len = symbol_conf.field_sep ? 1 : fmt->len - 2; \ - return __hpp__fmt_acc(hpp, he, he_get_##_field, " %*.2f%%", len, \ - hpp_entry_scnprintf, true); \ + return hpp__fmt_acc(fmt, hpp, he, he_get_##_field, " %*.2f%%", \ + hpp_entry_scnprintf, true); \ } #define __HPP_SORT_ACC_FN(_type, _field) \ @@ -311,9 +326,8 @@ static u64 he_get_raw_##_field(struct hist_entry *he) \ static int hpp__entry_##_type(struct perf_hpp_fmt *fmt, \ struct perf_hpp *hpp, struct hist_entry *he) \ { \ - int len = symbol_conf.field_sep ? 1 : fmt->len - 1; \ - return __hpp__fmt(hpp, he, he_get_raw_##_field, " %*"PRIu64, len, \ - hpp_entry_scnprintf, false); \ + return hpp__fmt(fmt, hpp, he, he_get_raw_##_field, " %*"PRIu64, \ + hpp_entry_scnprintf, false); \ } #define __HPP_SORT_RAW_FN(_type, _field) \ @@ -666,3 +680,21 @@ void perf_hpp__reset_width(struct perf_hpp_fmt *fmt, struct hists *hists) break; } } + +void perf_hpp__set_user_width(const char *width_list_str) +{ + struct perf_hpp_fmt *fmt; + const char *ptr = width_list_str; + + perf_hpp__for_each_format(fmt) { + char *p; + + int len = strtol(ptr, &p, 10); + fmt->user_len = len; + + if (*p == ',') + ptr = p + 1; + else + break; + } +} diff --git a/tools/perf/ui/stdio/hist.c b/tools/perf/ui/stdio/hist.c index 40af0ac..15b451a 100644 --- a/tools/perf/ui/stdio/hist.c +++ b/tools/perf/ui/stdio/hist.c @@ -395,10 +395,12 @@ size_t hists__fprintf(struct hists *hists, bool show_header, int max_rows, init_rem_hits(); - perf_hpp__for_each_format(fmt) perf_hpp__reset_width(fmt, hists); + if (symbol_conf.col_width_list_str) + perf_hpp__set_user_width(symbol_conf.col_width_list_str); + if (!show_header) goto print_entries; diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h index a7ae890..2e70003 100644 --- a/tools/perf/util/hist.h +++ b/tools/perf/util/hist.h @@ -208,6 +208,7 @@ struct perf_hpp_fmt { struct list_head sort_list; bool elide; int len; + int user_len; }; extern struct list_head perf_hpp__list; @@ -263,17 +264,18 @@ static inline bool perf_hpp__should_skip(struct perf_hpp_fmt *format) void perf_hpp__reset_width(struct perf_hpp_fmt *fmt, struct hists *hists); void perf_hpp__reset_sort_width(struct perf_hpp_fmt *fmt, struct hists *hists); +void perf_hpp__set_user_width(const char *width_list_str); typedef u64 (*hpp_field_fn)(struct hist_entry *he); typedef int (*hpp_callback_fn)(struct perf_hpp *hpp, bool front); typedef int (*hpp_snprint_fn)(struct perf_hpp *hpp, const char *fmt, ...); -int __hpp__fmt(struct perf_hpp *hpp, struct hist_entry *he, - hpp_field_fn get_field, const char *fmt, int len, - hpp_snprint_fn print_fn, bool fmt_percent); -int __hpp__fmt_acc(struct perf_hpp *hpp, struct hist_entry *he, - hpp_field_fn get_field, const char *fmt, int len, - hpp_snprint_fn print_fn, bool fmt_percent); +int hpp__fmt(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp, + struct hist_entry *he, hpp_field_fn get_field, + const char *fmtstr, hpp_snprint_fn print_fn, bool fmt_percent); +int hpp__fmt_acc(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp, + struct hist_entry *he, hpp_field_fn get_field, + const char *fmtstr, hpp_snprint_fn print_fn, bool fmt_percent); static inline void advance_hpp(struct perf_hpp *hpp, int inc) { diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c index a7f8a7b0..153b380 100644 --- a/tools/perf/util/sort.c +++ b/tools/perf/util/sort.c @@ -70,8 +70,10 @@ static int hist_entry__thread_snprintf(struct hist_entry *he, char *bf, size_t size, unsigned int width) { const char *comm = thread__comm_str(he->thread); - return repsep_snprintf(bf, size, "%5d:%-*s", he->thread->tid, - width - 6, comm ?: ""); + + width = max(7U, width) - 6; + return repsep_snprintf(bf, size, "%5d:%-*.*s", he->thread->tid, + width, width, comm ?: ""); } struct sort_entry sort_thread = { @@ -106,7 +108,7 @@ sort__comm_sort(struct hist_entry *left, struct hist_entry *right) static int hist_entry__comm_snprintf(struct hist_entry *he, char *bf, size_t size, unsigned int width) { - return repsep_snprintf(bf, size, "%-*s", width, comm__str(he->comm)); + return repsep_snprintf(bf, size, "%-*.*s", width, width, comm__str(he->comm)); } struct sort_entry sort_comm = { @@ -152,10 +154,10 @@ static int _hist_entry__dso_snprintf(struct map *map, char *bf, if (map && map->dso) { const char *dso_name = !verbose ? map->dso->short_name : map->dso->long_name; - return repsep_snprintf(bf, size, "%-*s", width, dso_name); + return repsep_snprintf(bf, size, "%-*.*s", width, width, dso_name); } - return repsep_snprintf(bf, size, "%-*s", width, "[unknown]"); + return repsep_snprintf(bf, size, "%-*.*s", width, width, "[unknown]"); } static int hist_entry__dso_snprintf(struct hist_entry *he, char *bf, @@ -257,7 +259,10 @@ static int _hist_entry__sym_snprintf(struct map *map, struct symbol *sym, width - ret, ""); } - return ret; + if (ret > width) + bf[width] = '\0'; + + return width; } static int hist_entry__sym_snprintf(struct hist_entry *he, char *bf, @@ -302,10 +307,9 @@ sort__srcline_cmp(struct hist_entry *left, struct hist_entry *right) } static int hist_entry__srcline_snprintf(struct hist_entry *he, char *bf, - size_t size, - unsigned int width __maybe_unused) + size_t size, unsigned int width) { - return repsep_snprintf(bf, size, "%-s", he->srcline); + return repsep_snprintf(bf, size, "%*.*-s", width, width, he->srcline); } struct sort_entry sort_srcline = { @@ -332,7 +336,7 @@ sort__parent_cmp(struct hist_entry *left, struct hist_entry *right) static int hist_entry__parent_snprintf(struct hist_entry *he, char *bf, size_t size, unsigned int width) { - return repsep_snprintf(bf, size, "%-*s", width, + return repsep_snprintf(bf, size, "%-*.*s", width, width, he->parent ? he->parent->name : "[other]"); } @@ -354,7 +358,7 @@ sort__cpu_cmp(struct hist_entry *left, struct hist_entry *right) static int hist_entry__cpu_snprintf(struct hist_entry *he, char *bf, size_t size, unsigned int width) { - return repsep_snprintf(bf, size, "%*d", width, he->cpu); + return repsep_snprintf(bf, size, "%*.*d", width, width, he->cpu); } struct sort_entry sort_cpu = { @@ -484,7 +488,7 @@ static int hist_entry__mispredict_snprintf(struct hist_entry *he, char *bf, else if (he->branch_info->flags.mispred) out = "Y"; - return repsep_snprintf(bf, size, "%-*s", width, out); + return repsep_snprintf(bf, size, "%-*.*s", width, width, out); } /* --sort daddr_sym */ @@ -1210,12 +1214,14 @@ static int __sort__hpp_header(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp, struct perf_evsel *evsel) { struct hpp_sort_entry *hse; - size_t len; + size_t len = fmt->user_len; hse = container_of(fmt, struct hpp_sort_entry, hpp); - len = hists__col_len(&evsel->hists, hse->se->se_width_idx); - return scnprintf(hpp->buf, hpp->size, "%-*s", len, hse->se->se_header); + if (!len) + len = hists__col_len(&evsel->hists, hse->se->se_width_idx); + + return scnprintf(hpp->buf, hpp->size, "%-*.*s", len, len, hse->se->se_header); } static int __sort__hpp_width(struct perf_hpp_fmt *fmt, @@ -1223,20 +1229,26 @@ static int __sort__hpp_width(struct perf_hpp_fmt *fmt, struct perf_evsel *evsel) { struct hpp_sort_entry *hse; + size_t len = fmt->user_len; hse = container_of(fmt, struct hpp_sort_entry, hpp); - return hists__col_len(&evsel->hists, hse->se->se_width_idx); + if (!len) + len = hists__col_len(&evsel->hists, hse->se->se_width_idx); + + return len; } static int __sort__hpp_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp, struct hist_entry *he) { struct hpp_sort_entry *hse; - size_t len; + size_t len = fmt->user_len; hse = container_of(fmt, struct hpp_sort_entry, hpp); - len = hists__col_len(he->hists, hse->se->se_width_idx); + + if (!len) + len = hists__col_len(he->hists, hse->se->se_width_idx); return hse->se->se_snprintf(he, hpp->buf, hpp->size, len); } @@ -1266,6 +1278,7 @@ __sort_dimension__alloc_hpp(struct sort_dimension *sd) INIT_LIST_HEAD(&hse->hpp.sort_list); hse->hpp.elide = false; hse->hpp.len = 0; + hse->hpp.user_len = 0; return hse; } -- cgit v1.1 From cf59002fdebc9c00ee29233e65bc39dd69e0eaf6 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Thu, 31 Jul 2014 14:47:39 +0900 Subject: perf top: Add -w option for setting column width Add -w/--column-widths option like perf report does so that users are able to see symbols even with some very long C++ library/functions. It can be a list separated by comma for each column. $ perf top -w 0,20,30 The value of 0 means there's no limit. Signed-off-by: Namhyung Kim Cc: Ingo Molnar Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1406785662-5534-6-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/Documentation/perf-report.txt | 2 +- tools/perf/Documentation/perf-top.txt | 6 ++++++ tools/perf/builtin-top.c | 3 +++ 3 files changed, 10 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt index d2b59af..d561e02 100644 --- a/tools/perf/Documentation/perf-report.txt +++ b/tools/perf/Documentation/perf-report.txt @@ -147,7 +147,7 @@ OPTIONS -w:: --column-widths=:: Force each column width to the provided list, for large terminal - readability. + readability. 0 means no limit (default behavior). -t:: --field-separator=:: diff --git a/tools/perf/Documentation/perf-top.txt b/tools/perf/Documentation/perf-top.txt index 180ae02..28fdee3 100644 --- a/tools/perf/Documentation/perf-top.txt +++ b/tools/perf/Documentation/perf-top.txt @@ -193,6 +193,12 @@ Default is to monitor all CPUS. sum of shown entries will be always 100%. "absolute" means it retains the original value before and after the filter is applied. +-w:: +--column-widths=:: + Force each column width to the provided list, for large terminal + readability. 0 means no limit (default behavior). + + INTERACTIVE PROMPTING KEYS -------------------------- diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index 377971d..bde216b 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -1131,6 +1131,9 @@ int cmd_top(int argc, const char **argv, const char *prefix __maybe_unused) "Don't show entries under that percent", parse_percent_limit), OPT_CALLBACK(0, "percentage", NULL, "relative|absolute", "How to display percentage of filtered entries", parse_filter_percentage), + OPT_STRING('w', "column-widths", &symbol_conf.col_width_list_str, + "width[,width...]", + "don't try to adjust column width, use these fixed values"), OPT_END() }; const char * const top_usage[] = { -- cgit v1.1 From 1ecd44533a8a724f64d4305abb69836ca73c7390 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Thu, 31 Jul 2014 14:47:40 +0900 Subject: perf tools: Add name field into perf_hpp_fmt It makes the code a bit simpler and easier to debug IMHO. I guess it can also remove similar code in perf diff, but let's keep it for a future work. :) Signed-off-by: Namhyung Kim Cc: Ingo Molnar Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1406785662-5534-7-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/ui/gtk/hists.c | 4 +- tools/perf/ui/hist.c | 136 +++++++++++++++++++++------------------------- tools/perf/util/hist.h | 1 + tools/perf/util/sort.c | 6 +- 4 files changed, 66 insertions(+), 81 deletions(-) (limited to 'tools') diff --git a/tools/perf/ui/gtk/hists.c b/tools/perf/ui/gtk/hists.c index 897b2e1..f3fa425 100644 --- a/tools/perf/ui/gtk/hists.c +++ b/tools/perf/ui/gtk/hists.c @@ -207,10 +207,8 @@ static void perf_gtk__show_hists(GtkWidget *window, struct hists *hists, if (perf_hpp__is_sort_entry(fmt)) sym_col = col_idx; - fmt->header(fmt, &hpp, hists_to_evsel(hists)); - gtk_tree_view_insert_column_with_attributes(GTK_TREE_VIEW(view), - -1, ltrim(s), + -1, fmt->name, renderer, "markup", col_idx++, NULL); } diff --git a/tools/perf/ui/hist.c b/tools/perf/ui/hist.c index b2d60a9..b5fa701 100644 --- a/tools/perf/ui/hist.c +++ b/tools/perf/ui/hist.c @@ -209,29 +209,26 @@ static int __hpp__sort_acc(struct hist_entry *a, struct hist_entry *b, return ret; } -#define __HPP_WIDTH_FN(_type, _str) \ -static int hpp__width_##_type(struct perf_hpp_fmt *fmt, \ - struct perf_hpp *hpp __maybe_unused, \ - struct perf_evsel *evsel) \ -{ \ - int len = fmt->user_len ?: fmt->len; \ - \ - if (symbol_conf.event_group) \ - len = max(len, evsel->nr_members * fmt->len); \ - \ - if (len < (int)strlen(_str)) \ - len = strlen(_str); \ - \ - return len; \ -} - -#define __HPP_HEADER_FN(_type, _str) \ -static int hpp__header_##_type(struct perf_hpp_fmt *fmt, \ - struct perf_hpp *hpp, \ - struct perf_evsel *evsel) \ -{ \ - int len = hpp__width_##_type(fmt, hpp, evsel); \ - return scnprintf(hpp->buf, hpp->size, "%*s", len, _str); \ +static int hpp__width_fn(struct perf_hpp_fmt *fmt, + struct perf_hpp *hpp __maybe_unused, + struct perf_evsel *evsel) +{ + int len = fmt->user_len ?: fmt->len; + + if (symbol_conf.event_group) + len = max(len, evsel->nr_members * fmt->len); + + if (len < (int)strlen(fmt->name)) + len = strlen(fmt->name); + + return len; +} + +static int hpp__header_fn(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp, + struct perf_evsel *evsel) +{ + int len = hpp__width_fn(fmt, hpp, evsel); + return scnprintf(hpp->buf, hpp->size, "%*s", len, fmt->name); } static int hpp_color_scnprintf(struct perf_hpp *hpp, const char *fmt, ...) @@ -337,38 +334,29 @@ static int64_t hpp__sort_##_type(struct hist_entry *a, struct hist_entry *b) \ } -#define HPP_PERCENT_FNS(_type, _str, _field) \ -__HPP_WIDTH_FN(_type, _str) \ -__HPP_HEADER_FN(_type, _str) \ +#define HPP_PERCENT_FNS(_type, _field) \ __HPP_COLOR_PERCENT_FN(_type, _field) \ __HPP_ENTRY_PERCENT_FN(_type, _field) \ __HPP_SORT_FN(_type, _field) -#define HPP_PERCENT_ACC_FNS(_type, _str, _field) \ -__HPP_WIDTH_FN(_type, _str) \ -__HPP_HEADER_FN(_type, _str) \ +#define HPP_PERCENT_ACC_FNS(_type, _field) \ __HPP_COLOR_ACC_PERCENT_FN(_type, _field) \ __HPP_ENTRY_ACC_PERCENT_FN(_type, _field) \ __HPP_SORT_ACC_FN(_type, _field) -#define HPP_RAW_FNS(_type, _str, _field) \ -__HPP_WIDTH_FN(_type, _str) \ -__HPP_HEADER_FN(_type, _str) \ +#define HPP_RAW_FNS(_type, _field) \ __HPP_ENTRY_RAW_FN(_type, _field) \ __HPP_SORT_RAW_FN(_type, _field) -__HPP_WIDTH_FN(overhead_self, "Self") -__HPP_HEADER_FN(overhead_self, "Self") +HPP_PERCENT_FNS(overhead, period) +HPP_PERCENT_FNS(overhead_sys, period_sys) +HPP_PERCENT_FNS(overhead_us, period_us) +HPP_PERCENT_FNS(overhead_guest_sys, period_guest_sys) +HPP_PERCENT_FNS(overhead_guest_us, period_guest_us) +HPP_PERCENT_ACC_FNS(overhead_acc, period) -HPP_PERCENT_FNS(overhead, "Overhead", period) -HPP_PERCENT_FNS(overhead_sys, "sys", period_sys) -HPP_PERCENT_FNS(overhead_us, "usr", period_us) -HPP_PERCENT_FNS(overhead_guest_sys, "guest sys", period_guest_sys) -HPP_PERCENT_FNS(overhead_guest_us, "guest usr", period_guest_us) -HPP_PERCENT_ACC_FNS(overhead_acc, "Children", period) - -HPP_RAW_FNS(samples, "Samples", nr_events) -HPP_RAW_FNS(period, "Period", period) +HPP_RAW_FNS(samples, nr_events) +HPP_RAW_FNS(period, period) static int64_t hpp__nop_cmp(struct hist_entry *a __maybe_unused, struct hist_entry *b __maybe_unused) @@ -376,47 +364,50 @@ static int64_t hpp__nop_cmp(struct hist_entry *a __maybe_unused, return 0; } -#define HPP__COLOR_PRINT_FNS(_name) \ +#define HPP__COLOR_PRINT_FNS(_name, _fn) \ { \ - .header = hpp__header_ ## _name, \ - .width = hpp__width_ ## _name, \ - .color = hpp__color_ ## _name, \ - .entry = hpp__entry_ ## _name, \ + .name = _name, \ + .header = hpp__header_fn, \ + .width = hpp__width_fn, \ + .color = hpp__color_ ## _fn, \ + .entry = hpp__entry_ ## _fn, \ .cmp = hpp__nop_cmp, \ .collapse = hpp__nop_cmp, \ - .sort = hpp__sort_ ## _name, \ + .sort = hpp__sort_ ## _fn, \ } -#define HPP__COLOR_ACC_PRINT_FNS(_name) \ +#define HPP__COLOR_ACC_PRINT_FNS(_name, _fn) \ { \ - .header = hpp__header_ ## _name, \ - .width = hpp__width_ ## _name, \ - .color = hpp__color_ ## _name, \ - .entry = hpp__entry_ ## _name, \ + .name = _name, \ + .header = hpp__header_fn, \ + .width = hpp__width_fn, \ + .color = hpp__color_ ## _fn, \ + .entry = hpp__entry_ ## _fn, \ .cmp = hpp__nop_cmp, \ .collapse = hpp__nop_cmp, \ - .sort = hpp__sort_ ## _name, \ + .sort = hpp__sort_ ## _fn, \ } -#define HPP__PRINT_FNS(_name) \ +#define HPP__PRINT_FNS(_name, _fn) \ { \ - .header = hpp__header_ ## _name, \ - .width = hpp__width_ ## _name, \ - .entry = hpp__entry_ ## _name, \ + .name = _name, \ + .header = hpp__header_fn, \ + .width = hpp__width_fn, \ + .entry = hpp__entry_ ## _fn, \ .cmp = hpp__nop_cmp, \ .collapse = hpp__nop_cmp, \ - .sort = hpp__sort_ ## _name, \ + .sort = hpp__sort_ ## _fn, \ } struct perf_hpp_fmt perf_hpp__format[] = { - HPP__COLOR_PRINT_FNS(overhead), - HPP__COLOR_PRINT_FNS(overhead_sys), - HPP__COLOR_PRINT_FNS(overhead_us), - HPP__COLOR_PRINT_FNS(overhead_guest_sys), - HPP__COLOR_PRINT_FNS(overhead_guest_us), - HPP__COLOR_ACC_PRINT_FNS(overhead_acc), - HPP__PRINT_FNS(samples), - HPP__PRINT_FNS(period) + HPP__COLOR_PRINT_FNS("Overhead", overhead), + HPP__COLOR_PRINT_FNS("sys", overhead_sys), + HPP__COLOR_PRINT_FNS("usr", overhead_us), + HPP__COLOR_PRINT_FNS("guest sys", overhead_guest_sys), + HPP__COLOR_PRINT_FNS("guest usr", overhead_guest_us), + HPP__COLOR_ACC_PRINT_FNS("Children", overhead_acc), + HPP__PRINT_FNS("Samples", samples), + HPP__PRINT_FNS("Period", period) }; LIST_HEAD(perf_hpp__list); @@ -466,11 +457,7 @@ void perf_hpp__init(void) if (symbol_conf.cumulate_callchain) { perf_hpp__column_enable(PERF_HPP__OVERHEAD_ACC); - - perf_hpp__format[PERF_HPP__OVERHEAD].header = - hpp__header_overhead_self; - perf_hpp__format[PERF_HPP__OVERHEAD].width = - hpp__width_overhead_self; + perf_hpp__format[PERF_HPP__OVERHEAD].name = "Self"; } perf_hpp__column_enable(PERF_HPP__OVERHEAD); @@ -536,8 +523,7 @@ void perf_hpp__cancel_cumulate(void) return; perf_hpp__column_disable(PERF_HPP__OVERHEAD_ACC); - perf_hpp__format[PERF_HPP__OVERHEAD].header = hpp__header_overhead; - perf_hpp__format[PERF_HPP__OVERHEAD].width = hpp__width_overhead; + perf_hpp__format[PERF_HPP__OVERHEAD].name = "Overhead"; } void perf_hpp__setup_output_field(void) diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h index 2e70003..95405a8 100644 --- a/tools/perf/util/hist.h +++ b/tools/perf/util/hist.h @@ -192,6 +192,7 @@ struct perf_hpp { }; struct perf_hpp_fmt { + const char *name; int (*header)(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp, struct perf_evsel *evsel); int (*width)(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp, diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c index 153b380..b4a805e 100644 --- a/tools/perf/util/sort.c +++ b/tools/perf/util/sort.c @@ -1206,8 +1206,7 @@ void perf_hpp__reset_sort_width(struct perf_hpp_fmt *fmt, struct hists *hists) return; hse = container_of(fmt, struct hpp_sort_entry, hpp); - hists__new_col_len(hists, hse->se->se_width_idx, - strlen(hse->se->se_header)); + hists__new_col_len(hists, hse->se->se_width_idx, strlen(fmt->name)); } static int __sort__hpp_header(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp, @@ -1221,7 +1220,7 @@ static int __sort__hpp_header(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp, if (!len) len = hists__col_len(&evsel->hists, hse->se->se_width_idx); - return scnprintf(hpp->buf, hpp->size, "%-*.*s", len, len, hse->se->se_header); + return scnprintf(hpp->buf, hpp->size, "%-*.*s", len, len, fmt->name); } static int __sort__hpp_width(struct perf_hpp_fmt *fmt, @@ -1265,6 +1264,7 @@ __sort_dimension__alloc_hpp(struct sort_dimension *sd) } hse->se = sd->entry; + hse->hpp.name = sd->entry->se_header; hse->hpp.header = __sort__hpp_header; hse->hpp.width = __sort__hpp_width; hse->hpp.entry = __sort__hpp_entry; -- cgit v1.1 From 59dc9f2534569d11a55c8b5dbe93c36f2b2fa506 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Thu, 31 Jul 2014 14:47:41 +0900 Subject: perf tools: Fix column alignment when headers aren't shown on TUI If user sets ui.show-headers config option to false, it didn't calculate default column width so it broke the alignment. This is because it does the calculation just before showing headers. Move it to the beginning of the hist browser so that it can be called regardless of the config option. Reported-by: Jiri Olsa Signed-off-by: Namhyung Kim Cc: Ingo Molnar Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1406785662-5534-8-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/ui/browsers/hists.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'tools') diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c index e07d4e8..045c1e1 100644 --- a/tools/perf/ui/browsers/hists.c +++ b/tools/perf/ui/browsers/hists.c @@ -850,9 +850,6 @@ static int hists__scnprintf_headers(char *buf, size_t size, struct hists *hists) if (perf_hpp__should_skip(fmt)) continue; - /* We need to ensure length of the columns header. */ - perf_hpp__reset_width(fmt, hists); - ret = fmt->header(fmt, &dummy_hpp, hists_to_evsel(hists)); if (advance_hpp_check(&dummy_hpp, ret)) break; @@ -1501,6 +1498,7 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events, char buf[64]; char script_opt[64]; int delay_secs = hbt ? hbt->refresh : 0; + struct perf_hpp_fmt *fmt; #define HIST_BROWSER_HELP_COMMON \ "h/?/F1 Show this window\n" \ @@ -1550,6 +1548,9 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events, memset(options, 0, sizeof(options)); + perf_hpp__for_each_format(fmt) + perf_hpp__reset_width(fmt, hists); + if (symbol_conf.col_width_list_str) perf_hpp__set_user_width(symbol_conf.col_width_list_str); -- cgit v1.1 From 038fa0b9739d7f375f3f61a2ce4f78ad44329f66 Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Sun, 3 Aug 2014 14:10:36 +0200 Subject: perf tools: Fix PERF_FLAG_FD_CLOEXEC flag probing event type open counters due to EBUSY error We were using PERF_COUNT_SW_CPU_CLOCK as an probing event type. Using expected PERF_TYPE_SOFTWARE type instead. Signed-off-by: Jiri Olsa Cc: Adrian Hunter Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Cc: William Cohen Cc: Yann Droneaud Link: http://lkml.kernel.org/r/20140803121036.GA1181@krava.brq.redhat.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/cloexec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/util/cloexec.c b/tools/perf/util/cloexec.c index dede0c3..5073c01 100644 --- a/tools/perf/util/cloexec.c +++ b/tools/perf/util/cloexec.c @@ -9,7 +9,7 @@ static int perf_flag_probe(void) { /* use 'safest' configuration as used in perf_evsel__fallback() */ struct perf_event_attr attr = { - .type = PERF_COUNT_SW_CPU_CLOCK, + .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_CLOCK, }; int fd; -- cgit v1.1 From d6a947fb6cdff3a19db93895c746f70b5903a965 Mon Sep 17 00:00:00 2001 From: Thomas Ilsche Date: Mon, 4 Aug 2014 15:03:15 +0200 Subject: perf tools: Default to python version 2 According to PEP 394 recommendation [1], it's more portable to use python2 rather than plain python to refer python binary version 2. Since there're distros using python3 by default like Arch, and we don't support python3 (yet), it'd be better using python2 explicitly. But older versions (prior to 2.7) seem not to provide python2 but just python. Given that it's only old version, try python2 first and then fallback to python. It'll ensure that it always points to python 2.x. I tested (compiles and perf script runs) with the combinations: 1) python -> python2.x, python-config -> python2.x-config python2 N/A, python2-config N/A 2) python -> python3.x, python-config -> python3.x-config python2 -> python2.x, python2-config -> python2.x-config 3) python -> python2.x, python-config -> python2.x-config python2 -> python2.x, python2-config -> python2.x-config 4) python -> python2.x, python-config -> python2.x-config python2 -> python2.x, python2-config N/A Based on / replaces the patch 2/2 by Namhyung Kim. [1] https://www.python.org/dev/peps/pep-0394 Based-on-patch-by: Namhyung Kim Signed-off-by: Thomas Ilsche Cc: Ingo Molnar Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/53DF8493.6070206@tu-dresden.de Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/config/Makefile | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) (limited to 'tools') diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile index e05d8f9..75d4c23 100644 --- a/tools/perf/config/Makefile +++ b/tools/perf/config/Makefile @@ -121,10 +121,16 @@ ifdef PARSER_DEBUG endif ifndef NO_LIBPYTHON - override PYTHON := \ - $(call get-executable-or-default,PYTHON,python) + # Try different combinations to accommodate systems that only have + # python[2][-config] in weird combinations but always preferring + # python2 and python2-config as per pep-0394. If we catch a + # python[-config] in version 3, the version check will kill it. + PYTHON2 := $(if $(call get-executable,python2),python2,python) + override PYTHON := $(call get-executable-or-default,PYTHON,$(PYTHON2)) + PYTHON2_CONFIG := \ + $(if $(call get-executable,$(PYTHON)-config),$(PYTHON)-config,python-config) override PYTHON_CONFIG := \ - $(call get-executable-or-default,PYTHON_CONFIG,$(PYTHON)-config) + $(call get-executable-or-default,PYTHON_CONFIG,$(PYTHON2_CONFIG)) PYTHON_CONFIG_SQ := $(call shell-sq,$(PYTHON_CONFIG)) -- cgit v1.1 From e7110b9fb901dcc022afd358386c1be69658af7d Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Fri, 8 Aug 2014 18:00:39 -0300 Subject: perf top: Don't look for kernel idle symbols in all DSOs The 'top' tool initially supported only kernel symbols, when making it support userspace symbols we forgot to make the symbol filter first check that the DSO is the kernel one. Fix it. Cc: Adrian Hunter Cc: David Ahern Cc: Don Zickus Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Mike Galbraith Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra c: Stephane Eranian Link: http://lkml.kernel.org/n/tip-54haztkeigmbump5sexxnzhv@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-top.c | 4 +++- tools/perf/util/symbol.c | 4 ++++ 2 files changed, 7 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index bde216b..4fb6f72 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -623,10 +623,12 @@ repeat: return NULL; } -static int symbol_filter(struct map *map __maybe_unused, struct symbol *sym) +static int symbol_filter(struct map *map, struct symbol *sym) { const char *name = sym->name; + if (!map->dso->kernel) + return 0; /* * ppc64 uses function descriptors and appends a '.' to the * start of every instruction address. Remove it. diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c index f134ec1..35a8bd5 100644 --- a/tools/perf/util/symbol.c +++ b/tools/perf/util/symbol.c @@ -523,6 +523,10 @@ struct process_kallsyms_args { struct dso *dso; }; +/* + * These are symbols in the kernel image, so make sure that + * sym is from a kernel DSO. + */ bool symbol__is_idle(struct symbol *sym) { const char * const idle_symbols[] = { -- cgit v1.1 From e0336ed66f5dd974e02b1af4a81bb567a2391e45 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Fri, 8 Aug 2014 18:02:41 -0300 Subject: perf tools: Add cpu_startup_entry to the list of kernel idle symbols Cc: Adrian Hunter Cc: David Ahern Cc: Don Zickus Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Mike Galbraith Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-oh4lrofvrqqv1eyslh7m4rq4@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/symbol.c | 1 + 1 file changed, 1 insertion(+) (limited to 'tools') diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c index 35a8bd5..581c568 100644 --- a/tools/perf/util/symbol.c +++ b/tools/perf/util/symbol.c @@ -531,6 +531,7 @@ bool symbol__is_idle(struct symbol *sym) { const char * const idle_symbols[] = { "cpu_idle", + "cpu_startup_entry", "intel_idle", "default_idle", "native_safe_halt", -- cgit v1.1 From ae256fa27118e54b0f093f0cfe2ada28f1704ef3 Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Mon, 11 Aug 2014 10:50:05 +0200 Subject: perf top: Join the display thread on exit We create the display thread, but never join it. It gives the display thread a chance to quit and cleanup properly. Signed-off-by: Jiri Olsa Cc: Adrian Hunter Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jean Pihet Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1407747014-18394-12-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-top.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index 4fb6f72..10fc7e8 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -965,7 +965,7 @@ static int __cmd_top(struct perf_top *top) param.sched_priority = top->realtime_prio; if (sched_setscheduler(0, SCHED_FIFO, ¶m)) { ui__error("Could not set realtime priority.\n"); - goto out_delete; + goto out_join; } } @@ -979,6 +979,8 @@ static int __cmd_top(struct perf_top *top) } ret = 0; +out_join: + pthread_join(thread, NULL); out_delete: perf_session__delete(top->session); top->session = NULL; -- cgit v1.1 From 9398c484f8abc8d287cb90f5a33dd43ac26f24ef Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Mon, 11 Aug 2014 10:50:02 +0200 Subject: perf tools: Introduce set_term_quiet_input helper function Adding set_term_quiet_input helper to set the terminal quiet, out from 'perf top', used in following patches in 'perf kvm'. Signed-off-by: Jiri Olsa Cc: Adrian Hunter Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jean Pihet Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1407747014-18394-9-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-top.c | 10 ++-------- tools/perf/util/util.c | 13 +++++++++++++ tools/perf/util/util.h | 2 ++ 3 files changed, 17 insertions(+), 8 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index 10fc7e8..e8459e2 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -580,20 +580,14 @@ static void *display_thread_tui(void *arg) static void *display_thread(void *arg) { struct pollfd stdin_poll = { .fd = 0, .events = POLLIN }; - struct termios tc, save; + struct termios save; struct perf_top *top = arg; int delay_msecs, c; - tcgetattr(0, &save); - tc = save; - tc.c_lflag &= ~(ICANON | ECHO); - tc.c_cc[VMIN] = 0; - tc.c_cc[VTIME] = 0; - pthread__unblock_sigwinch(); repeat: delay_msecs = top->delay_secs * 1000; - tcsetattr(0, TCSANOW, &tc); + set_term_quiet_input(&save); /* trash return*/ getc(stdin); diff --git a/tools/perf/util/util.c b/tools/perf/util/util.c index b82a93c..25822bd 100644 --- a/tools/perf/util/util.c +++ b/tools/perf/util/util.c @@ -13,6 +13,7 @@ #include #include #include +#include /* * XXX We need to find a better place for these things... @@ -282,6 +283,18 @@ void get_term_dimensions(struct winsize *ws) ws->ws_col = 80; } +void set_term_quiet_input(struct termios *old) +{ + struct termios tc; + + tcgetattr(0, old); + tc = *old; + tc.c_lflag &= ~(ICANON | ECHO); + tc.c_cc[VMIN] = 0; + tc.c_cc[VTIME] = 0; + tcsetattr(0, TCSANOW, &tc); +} + static void set_tracing_events_path(const char *mountpoint) { snprintf(tracing_events_path, sizeof(tracing_events_path), "%s/%s", diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h index 03a1ea2..d6a79b1 100644 --- a/tools/perf/util/util.h +++ b/tools/perf/util/util.h @@ -75,6 +75,7 @@ #include #include #include +#include extern const char *graph_line; extern const char *graph_dotted_line; @@ -308,6 +309,7 @@ extern unsigned int page_size; extern int cacheline_size; void get_term_dimensions(struct winsize *ws); +void set_term_quiet_input(struct termios *old); struct parse_tag { char tag; -- cgit v1.1 From 4a1a99712a8a13d97e9de818869bf1b88583d6bc Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Mon, 11 Aug 2014 10:50:07 +0200 Subject: perf top: Setup signals for terminal output The TUI code setup standard signals handling, while the stdio display code does not. This leads to premature termination of display thread when signal is received and leaving terminal in wrong state. Also adding terminal cleanup at the end of display thread, to ensure we get the old terminal state in case of signal interruption. Signed-off-by: Jiri Olsa Cc: Adrian Hunter Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jean Pihet Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1407747014-18394-14-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-top.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'tools') diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index e8459e2..0ab3ea7 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -577,6 +577,20 @@ static void *display_thread_tui(void *arg) return NULL; } +static void display_sig(int sig __maybe_unused) +{ + done = 1; +} + +static void display_setup_sig(void) +{ + signal(SIGSEGV, display_sig); + signal(SIGFPE, display_sig); + signal(SIGINT, display_sig); + signal(SIGQUIT, display_sig); + signal(SIGTERM, display_sig); +} + static void *display_thread(void *arg) { struct pollfd stdin_poll = { .fd = 0, .events = POLLIN }; @@ -584,6 +598,7 @@ static void *display_thread(void *arg) struct perf_top *top = arg; int delay_msecs, c; + display_setup_sig(); pthread__unblock_sigwinch(); repeat: delay_msecs = top->delay_secs * 1000; @@ -614,6 +629,7 @@ repeat: } } + tcsetattr(0, TCSAFLUSH, &save); return NULL; } -- cgit v1.1 From d5b4130ae636e1fd0eaaea7152170198c34fbf62 Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Mon, 11 Aug 2014 10:50:09 +0200 Subject: perf kvm: Fix stdin handling for 'kvm stat live' command Currently the initial ~(ICANON | ECHO) terminal mode is not set, so we dont get stdin data until we press ENTER. Fixing this by early setting of the ~(ICANON | ECHO) mode and leaving this mode for whole life of the command, because canonical mode is not needed. Signed-off-by: Jiri Olsa Cc: Adrian Hunter Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jean Pihet Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1407747014-18394-16-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-kvm.c | 18 +++++------------- 1 file changed, 5 insertions(+), 13 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c index 7cccead..ff40475 100644 --- a/tools/perf/builtin-kvm.c +++ b/tools/perf/builtin-kvm.c @@ -885,15 +885,11 @@ static int fd_set_nonblock(int fd) return 0; } -static -int perf_kvm__handle_stdin(struct termios *tc_now, struct termios *tc_save) +static int perf_kvm__handle_stdin(void) { int c; - tcsetattr(0, TCSANOW, tc_now); c = getc(stdin); - tcsetattr(0, TCSAFLUSH, tc_save); - if (c == 'q') return 1; @@ -904,7 +900,7 @@ static int kvm_events_live_report(struct perf_kvm_stat *kvm) { struct pollfd *pollfds = NULL; int nr_fds, nr_stdin, ret, err = -EINVAL; - struct termios tc, save; + struct termios save; /* live flag must be set first */ kvm->live = true; @@ -919,14 +915,9 @@ static int kvm_events_live_report(struct perf_kvm_stat *kvm) goto out; } + set_term_quiet_input(&save); init_kvm_event_record(kvm); - tcgetattr(0, &save); - tc = save; - tc.c_lflag &= ~(ICANON | ECHO); - tc.c_cc[VMIN] = 0; - tc.c_cc[VTIME] = 0; - signal(SIGINT, sig_handler); signal(SIGTERM, sig_handler); @@ -972,7 +963,7 @@ static int kvm_events_live_report(struct perf_kvm_stat *kvm) goto out; if (pollfds[nr_stdin].revents & POLLIN) - done = perf_kvm__handle_stdin(&tc, &save); + done = perf_kvm__handle_stdin(); if (!rc && !done) err = poll(pollfds, nr_fds, 100); @@ -989,6 +980,7 @@ out: if (kvm->timerfd >= 0) close(kvm->timerfd); + tcsetattr(0, TCSAFLUSH, &save); free(pollfds); return err; } -- cgit v1.1 From 5e45187cc94814d2a5324bc18af994efc4fb4f7c Mon Sep 17 00:00:00 2001 From: Masami Hiramatsu Date: Wed, 13 Aug 2014 16:12:48 +0000 Subject: perf probe: Fix --list option to show events only with uprobe events Current perf probe --list doesn't work if only CONFIG_UPROBE_EVENTS=y because it aborts when it fails to open kprobe_events file before checking uprobe_events file. This fixes --list option to show dynamic events if it can open either kprobe_events or uprobe_events. Only if it failed to open both of them, it shows an error message and aborts. Without this patch, if we run perf probe -l on the kernel configured with CONFIG_KPROBE_EVENTS=n and CONFIG_UPROBE_EVENTS=y, # perf probe -l /sys/kernel/debug/tracing/kprobe_events file does not exist - please rebuild ker Error: Failed to show event list. With this patch, # perf probe -l probe_perf:alloc_event (on alloc_event@lib/traceevent/event-parse.c in /home/fedora/ksrc/linux-3/tools/perf/perf) Changes in v2: - Use strerror_r instead of strerror. Reported-by: Naohiro Aota Signed-off-by: Masami Hiramatsu Cc: Ingo Molnar Cc: Naohiro Aota Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20140813161248.26440.84370.stgit@kbuild-fedora.novalocal Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/probe-event.c | 89 ++++++++++++++++++++++++++++--------------- 1 file changed, 59 insertions(+), 30 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c index 9a0a183..50aa7f05 100644 --- a/tools/perf/util/probe-event.c +++ b/tools/perf/util/probe-event.c @@ -1780,10 +1780,11 @@ static void clear_probe_trace_event(struct probe_trace_event *tev) memset(tev, 0, sizeof(*tev)); } -static void print_warn_msg(const char *file, bool is_kprobe) +static void print_open_warning(int err, bool is_kprobe) { + char sbuf[128]; - if (errno == ENOENT) { + if (err == -ENOENT) { const char *config; if (!is_kprobe) @@ -1791,25 +1792,26 @@ static void print_warn_msg(const char *file, bool is_kprobe) else config = "CONFIG_KPROBE_EVENTS"; - pr_warning("%s file does not exist - please rebuild kernel" - " with %s.\n", file, config); - } else - pr_warning("Failed to open %s file: %s\n", file, - strerror(errno)); + pr_warning("%cprobe_events file does not exist" + " - please rebuild kernel with %s.\n", + is_kprobe ? 'k' : 'u', config); + } else if (err == -ENOTSUP) + pr_warning("Debugfs is not mounted.\n"); + else + pr_warning("Failed to open %cprobe_events: %s\n", + is_kprobe ? 'k' : 'u', + strerror_r(-err, sbuf, sizeof(sbuf))); } -static int open_probe_events(const char *trace_file, bool readwrite, - bool is_kprobe) +static int open_probe_events(const char *trace_file, bool readwrite) { char buf[PATH_MAX]; const char *__debugfs; int ret; __debugfs = debugfs_find_mountpoint(); - if (__debugfs == NULL) { - pr_warning("Debugfs is not mounted.\n"); - return -ENOENT; - } + if (__debugfs == NULL) + return -ENOTSUP; ret = e_snprintf(buf, PATH_MAX, "%s/%s", __debugfs, trace_file); if (ret >= 0) { @@ -1820,19 +1822,19 @@ static int open_probe_events(const char *trace_file, bool readwrite, ret = open(buf, O_RDONLY, 0); if (ret < 0) - print_warn_msg(buf, is_kprobe); + ret = -errno; } return ret; } static int open_kprobe_events(bool readwrite) { - return open_probe_events("tracing/kprobe_events", readwrite, true); + return open_probe_events("tracing/kprobe_events", readwrite); } static int open_uprobe_events(bool readwrite) { - return open_probe_events("tracing/uprobe_events", readwrite, false); + return open_probe_events("tracing/uprobe_events", readwrite); } /* Get raw string list of current kprobe_events or uprobe_events */ @@ -1940,27 +1942,47 @@ static int __show_perf_probe_events(int fd, bool is_kprobe) /* List up current perf-probe events */ int show_perf_probe_events(void) { - int fd, ret; + int kp_fd, up_fd, ret; setup_pager(); - fd = open_kprobe_events(false); - - if (fd < 0) - return fd; ret = init_symbol_maps(false); if (ret < 0) return ret; - ret = __show_perf_probe_events(fd, true); - close(fd); + kp_fd = open_kprobe_events(false); + if (kp_fd >= 0) { + ret = __show_perf_probe_events(kp_fd, true); + close(kp_fd); + if (ret < 0) + goto out; + } - fd = open_uprobe_events(false); - if (fd >= 0) { - ret = __show_perf_probe_events(fd, false); - close(fd); + up_fd = open_uprobe_events(false); + if (kp_fd < 0 && up_fd < 0) { + /* Both kprobes and uprobes are disabled, warn it. */ + if (kp_fd == -ENOTSUP && up_fd == -ENOTSUP) + pr_warning("Debugfs is not mounted.\n"); + else if (kp_fd == -ENOENT && up_fd == -ENOENT) + pr_warning("Please rebuild kernel with " + "CONFIG_KPROBE_EVENTS or/and " + "CONFIG_UPROBE_EVENTS.\n"); + else { + char sbuf[128]; + pr_warning("Failed to open kprobe events: %s.\n", + strerror_r(-kp_fd, sbuf, sizeof(sbuf))); + pr_warning("Failed to open uprobe events: %s.\n", + strerror_r(-up_fd, sbuf, sizeof(sbuf))); + } + ret = kp_fd; + goto out; } + if (up_fd >= 0) { + ret = __show_perf_probe_events(up_fd, false); + close(up_fd); + } +out: exit_symbol_maps(); return ret; } @@ -2075,8 +2097,11 @@ static int __add_probe_trace_events(struct perf_probe_event *pev, else fd = open_kprobe_events(true); - if (fd < 0) + if (fd < 0) { + print_open_warning(fd, !pev->uprobes); return fd; + } + /* Get current event names */ namelist = get_probe_trace_event_names(fd, false); if (!namelist) { @@ -2449,13 +2474,17 @@ int del_perf_probe_events(struct strlist *dellist) /* Get current event names */ kfd = open_kprobe_events(true); - if (kfd < 0) + if (kfd < 0) { + print_open_warning(kfd, true); return kfd; + } namelist = get_probe_trace_event_names(kfd, true); ufd = open_uprobe_events(true); - if (ufd >= 0) + if (ufd < 0) + print_open_warning(ufd, false); + else unamelist = get_probe_trace_event_names(ufd, true); if (namelist == NULL && unamelist == NULL) -- cgit v1.1 From 467ec08567483e3868f240b1ee03808970e06388 Mon Sep 17 00:00:00 2001 From: Masami Hiramatsu Date: Wed, 13 Aug 2014 16:12:50 +0000 Subject: perf probe: Fix --del option to delete events only with uprobe events Current perf probe --del doesn't work if only CONFIG_UPROBE_EVENTS=y because it aborts when it fails to open kprobe_events file before checking uprobe_events file. This fixes --del option to delete dynamic events if it can open either kprobe_events or uprobe_events. Only if it failed to open both of them, it shows an error message and aborts. Without this patch, if we run perf probe -d on the kernel configured with CONFIG_KPROBE_EVENTS=n and CONFIG_UPROBE_EVENTS=y, # perf probe -d \* kprobe_events file does not exist - please rebuild kernel with CONFIG_KPROBE_EVENTS. Error: Failed to delete events. With this patch, # perf probe -d \* Removed event: probe_perf:alloc_event Changes in v2: - Use strerror_r instead of strerror. Signed-off-by: Masami Hiramatsu Cc: Ingo Molnar Cc: Naohiro Aota Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20140813161250.26440.24028.stgit@kbuild-fedora.novalocal Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/probe-event.c | 49 +++++++++++++++++++++++-------------------- 1 file changed, 26 insertions(+), 23 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c index 50aa7f05..443225c 100644 --- a/tools/perf/util/probe-event.c +++ b/tools/perf/util/probe-event.c @@ -1803,6 +1803,23 @@ static void print_open_warning(int err, bool is_kprobe) strerror_r(-err, sbuf, sizeof(sbuf))); } +static void print_both_open_warning(int kerr, int uerr) +{ + /* Both kprobes and uprobes are disabled, warn it. */ + if (kerr == -ENOTSUP && uerr == -ENOTSUP) + pr_warning("Debugfs is not mounted.\n"); + else if (kerr == -ENOENT && uerr == -ENOENT) + pr_warning("Please rebuild kernel with CONFIG_KPROBE_EVENTS " + "or/and CONFIG_UPROBE_EVENTS.\n"); + else { + char sbuf[128]; + pr_warning("Failed to open kprobe events: %s.\n", + strerror_r(-kerr, sbuf, sizeof(sbuf))); + pr_warning("Failed to open uprobe events: %s.\n", + strerror_r(-uerr, sbuf, sizeof(sbuf))); + } +} + static int open_probe_events(const char *trace_file, bool readwrite) { char buf[PATH_MAX]; @@ -1960,20 +1977,7 @@ int show_perf_probe_events(void) up_fd = open_uprobe_events(false); if (kp_fd < 0 && up_fd < 0) { - /* Both kprobes and uprobes are disabled, warn it. */ - if (kp_fd == -ENOTSUP && up_fd == -ENOTSUP) - pr_warning("Debugfs is not mounted.\n"); - else if (kp_fd == -ENOENT && up_fd == -ENOENT) - pr_warning("Please rebuild kernel with " - "CONFIG_KPROBE_EVENTS or/and " - "CONFIG_UPROBE_EVENTS.\n"); - else { - char sbuf[128]; - pr_warning("Failed to open kprobe events: %s.\n", - strerror_r(-kp_fd, sbuf, sizeof(sbuf))); - pr_warning("Failed to open uprobe events: %s.\n", - strerror_r(-up_fd, sbuf, sizeof(sbuf))); - } + print_both_open_warning(kp_fd, up_fd); ret = kp_fd; goto out; } @@ -2474,19 +2478,18 @@ int del_perf_probe_events(struct strlist *dellist) /* Get current event names */ kfd = open_kprobe_events(true); - if (kfd < 0) { - print_open_warning(kfd, true); - return kfd; - } + if (kfd >= 0) + namelist = get_probe_trace_event_names(kfd, true); - namelist = get_probe_trace_event_names(kfd, true); ufd = open_uprobe_events(true); - - if (ufd < 0) - print_open_warning(ufd, false); - else + if (ufd >= 0) unamelist = get_probe_trace_event_names(ufd, true); + if (kfd < 0 && ufd < 0) { + print_both_open_warning(kfd, ufd); + goto error; + } + if (namelist == NULL && unamelist == NULL) goto error; -- cgit v1.1 From 86998dda5d244f4b1b994dfe34a677f3b70cfdd3 Mon Sep 17 00:00:00 2001 From: Alex Snast Date: Wed, 13 Aug 2014 18:42:40 +0300 Subject: perf trace: Add beautifier for mremap flags param MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit ~/devel/kernel/tools/perf(branch:master*) » sudo ./perf trace ~/mremap_test 0.543 ( 0.003 ms): mprotect(start: 0x600000, len: 4096, prot: READ ) = 0 0.550 ( 0.003 ms): mprotect(start: 0x7f441260d000, len: 4096, prot: READ) = 0 0.561 ( 0.010 ms): munmap(addr: 0x7f44125e2000, len: 165572 ) = 0 0.595 ( 0.012 ms): mmap(len: 12288, prot: READ|WRITE, flags: SHARED|ANONYMOUS|LOCKED, fd: -1) = 0x12608000 0.603 ( 0.006 ms): mremap(addr: 0x7f4412608000, old_len: 4096, new_len: 4096, flags: MAYMOVE|FIXED, new_addr: 0x7f16da295000) = 0xda295000 0.608 ( 0.003 ms): mremap(addr: 0x7f441260a000, old_len: 4096, new_len: 4096, flags: MAYMOVE|FIXED, new_addr: 0x7f16da297000) = 0xda297000 0.612 ( 0.003 ms): mremap(addr: 0x7f4412609000, old_len: 4096, new_len: 4096, flags: MAYMOVE|FIXED, new_addr: 0x7f16da296000) = 0xda296000 0.619 ( 0.000 ms): exit_group( Signed-off-by: Alex Snast Cc: Ingo Molnar Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1407944560-26924-1-git-send-email-asnast@gmail.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-trace.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) (limited to 'tools') diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index 36ae51d..20fac50 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -402,6 +402,31 @@ static size_t syscall_arg__scnprintf_mmap_flags(char *bf, size_t size, #define SCA_MMAP_FLAGS syscall_arg__scnprintf_mmap_flags +static size_t syscall_arg__scnprintf_mremap_flags(char *bf, size_t size, + struct syscall_arg *arg) +{ + int printed = 0, flags = arg->val; + +#define P_MREMAP_FLAG(n) \ + if (flags & MREMAP_##n) { \ + printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \ + flags &= ~MREMAP_##n; \ + } + + P_MREMAP_FLAG(MAYMOVE); +#ifdef MREMAP_FIXED + P_MREMAP_FLAG(FIXED); +#endif +#undef P_MREMAP_FLAG + + if (flags) + printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags); + + return printed; +} + +#define SCA_MREMAP_FLAGS syscall_arg__scnprintf_mremap_flags + static size_t syscall_arg__scnprintf_madvise_behavior(char *bf, size_t size, struct syscall_arg *arg) { @@ -1004,6 +1029,7 @@ static struct syscall_fmt { [2] = SCA_MMAP_PROT, /* prot */ }, }, { .name = "mremap", .hexret = true, .arg_scnprintf = { [0] = SCA_HEX, /* addr */ + [3] = SCA_MREMAP_FLAGS, /* flags */ [4] = SCA_HEX, /* new_addr */ }, }, { .name = "munlock", .errmsg = true, .arg_scnprintf = { [0] = SCA_HEX, /* addr */ }, }, -- cgit v1.1 From a5b0153c880c2775bf5bdd78306f0a47e860ea04 Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Tue, 12 Aug 2014 18:04:28 +0300 Subject: perf tools: Fix CLOEXEC probe for perf_event_paranoid == 2 With /proc/sys/kernel/perf_event_paranoid set to 2, the probe of PERF_FLAG_FD_CLOEXEC would fail. Fix by excluding kernel profiling from the probe event. Signed-off-by: Adrian Hunter Acked-by: Jiri Olsa Acked-by: Namhyung Kim Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1407855871-15024-2-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/cloexec.c | 1 + 1 file changed, 1 insertion(+) (limited to 'tools') diff --git a/tools/perf/util/cloexec.c b/tools/perf/util/cloexec.c index 5073c01..000047c 100644 --- a/tools/perf/util/cloexec.c +++ b/tools/perf/util/cloexec.c @@ -11,6 +11,7 @@ static int perf_flag_probe(void) struct perf_event_attr attr = { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_CLOCK, + .exclude_kernel = 1, }; int fd; int err; -- cgit v1.1 From c6fa35659c5fae5f9aeb6874b177baeb2adbc02e Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Tue, 12 Aug 2014 18:04:29 +0300 Subject: perf tools: Fix one of the probe events to exclude kernel When probing the kernel API the kernel should be excluded otherwise the probe will fail for users with insufficient privilege to profile the kernel. Signed-off-by: Adrian Hunter Acked-by: Jiri Olsa Acked-by: Namhyung Kim Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1407855871-15024-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/record.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/util/record.c b/tools/perf/util/record.c index fe8079e..58267a8 100644 --- a/tools/perf/util/record.c +++ b/tools/perf/util/record.c @@ -47,7 +47,7 @@ out_delete: static bool perf_probe_api(setup_probe_fn_t fn) { - const char *try[] = {"cycles:u", "instructions:u", "cpu-clock", NULL}; + const char *try[] = {"cycles:u", "instructions:u", "cpu-clock:u", NULL}; struct cpu_map *cpus; int cpu, ret, i = 0; -- cgit v1.1 From 46ec69add5df60310147ce3ce01a662053d82a1e Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Tue, 12 Aug 2014 18:04:30 +0300 Subject: perf tools: Fix probing the kernel API with cpu-wide events Fall back to probing with the current pid if cpu-wide probing fails. This primarily affects the setting of comm_exec flag when the user is un-privileged and /proc/sys/kernel/perf_event_paranoid > 0. The change to comm_exec can be observed by using -vv with perf record and a kernel that supports comm_exec. Signed-off-by: Adrian Hunter Acked-by: Jiri Olsa Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1407855871-15024-4-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/record.c | 36 +++++++++++++++++++++++++++--------- 1 file changed, 27 insertions(+), 9 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/record.c b/tools/perf/util/record.c index 58267a8..e778afd 100644 --- a/tools/perf/util/record.c +++ b/tools/perf/util/record.c @@ -14,6 +14,7 @@ static int perf_do_probe_api(setup_probe_fn_t fn, int cpu, const char *str) struct perf_evsel *evsel; unsigned long flags = perf_event_open_cloexec_flag(); int err = -EAGAIN, fd; + static pid_t pid = -1; evlist = perf_evlist__new(); if (!evlist) @@ -24,14 +25,22 @@ static int perf_do_probe_api(setup_probe_fn_t fn, int cpu, const char *str) evsel = perf_evlist__first(evlist); - fd = sys_perf_event_open(&evsel->attr, -1, cpu, -1, flags); - if (fd < 0) - goto out_delete; + while (1) { + fd = sys_perf_event_open(&evsel->attr, pid, cpu, -1, flags); + if (fd < 0) { + if (pid == -1 && errno == EACCES) { + pid = 0; + continue; + } + goto out_delete; + } + break; + } close(fd); fn(evsel); - fd = sys_perf_event_open(&evsel->attr, -1, cpu, -1, flags); + fd = sys_perf_event_open(&evsel->attr, pid, cpu, -1, flags); if (fd < 0) { if (errno == EINVAL) err = -EINVAL; @@ -201,6 +210,7 @@ bool perf_evlist__can_select_event(struct perf_evlist *evlist, const char *str) struct perf_evsel *evsel; int err, fd, cpu; bool ret = false; + pid_t pid = -1; temp_evlist = perf_evlist__new(); if (!temp_evlist) @@ -221,12 +231,20 @@ bool perf_evlist__can_select_event(struct perf_evlist *evlist, const char *str) cpu = evlist->cpus->map[0]; } - fd = sys_perf_event_open(&evsel->attr, -1, cpu, -1, - perf_event_open_cloexec_flag()); - if (fd >= 0) { - close(fd); - ret = true; + while (1) { + fd = sys_perf_event_open(&evsel->attr, pid, cpu, -1, + perf_event_open_cloexec_flag()); + if (fd < 0) { + if (pid == -1 && errno == EACCES) { + pid = 0; + continue; + } + goto out_delete; + } + break; } + close(fd); + ret = true; out_delete: perf_evlist__delete(temp_evlist); -- cgit v1.1 From f6edb53c4993ffe92ce521fb449d1c146cea6ec2 Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Tue, 12 Aug 2014 18:04:31 +0300 Subject: perf tools: Prefer to use a cpu-wide event for probing CLOEXEC When doing a system-wide trace with Intel PT, the jump label set up as a result of probing CLOEXEC gets reset while the trace is running. That causes an Intel PT decoding error because the object code (obtained from /proc/kcore) does not match the running code at that point. While we can't expect there never to be jump label changes, we can avoid cases that the perf tool itself creates. The problem is avoided by first trying a cpu-wide event (pid = -1) for probing the PERF_FLAG_FD_CLOEXEC flag and falling back to an event for the current process (pid = 0). Signed-off-by: Adrian Hunter Acked-by: Jiri Olsa Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1407855871-15024-5-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/cloexec.c | 22 ++++++++++++++++++---- 1 file changed, 18 insertions(+), 4 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/cloexec.c b/tools/perf/util/cloexec.c index 000047c..4945aa5 100644 --- a/tools/perf/util/cloexec.c +++ b/tools/perf/util/cloexec.c @@ -1,3 +1,4 @@ +#include #include "util.h" #include "../perf.h" #include "cloexec.h" @@ -15,10 +16,23 @@ static int perf_flag_probe(void) }; int fd; int err; + int cpu; + pid_t pid = -1; - /* check cloexec flag */ - fd = sys_perf_event_open(&attr, 0, -1, -1, - PERF_FLAG_FD_CLOEXEC); + cpu = sched_getcpu(); + if (cpu < 0) + cpu = 0; + + while (1) { + /* check cloexec flag */ + fd = sys_perf_event_open(&attr, pid, cpu, -1, + PERF_FLAG_FD_CLOEXEC); + if (fd < 0 && pid == -1 && errno == EACCES) { + pid = 0; + continue; + } + break; + } err = errno; if (fd >= 0) { @@ -31,7 +45,7 @@ static int perf_flag_probe(void) err, strerror(err)); /* not supported, confirm error related to PERF_FLAG_FD_CLOEXEC */ - fd = sys_perf_event_open(&attr, 0, -1, -1, 0); + fd = sys_perf_event_open(&attr, pid, cpu, -1, 0); err = errno; if (WARN_ONCE(fd < 0 && err != EBUSY, -- cgit v1.1 From 6cc870f09da4d50722bc1caa27cad51733ce36f6 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Tue, 12 Aug 2014 15:40:33 +0900 Subject: perf script: Fix possible memory leaks Some paths in perf script don't call perf_session__delete() after creating a new session. Signed-off-by: Namhyung Kim Acked-by: Jiri Olsa Cc: Adrian Hunter Cc: David Ahern Cc: Ingo Molnar Cc: Jiri Olsa Cc: Minchan Kim Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1407825645-24586-2-git-send-email-namhyung@kernel.org [ Saved errno value before calling perror(), as pointed out by Adrian Hunter ] Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-script.c | 35 ++++++++++++++++++++++------------- 1 file changed, 22 insertions(+), 13 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c index 868c17d..c84d723 100644 --- a/tools/perf/builtin-script.c +++ b/tools/perf/builtin-script.c @@ -1471,12 +1471,13 @@ int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused) bool show_full_info = false; bool header = false; bool header_only = false; + bool script_started = false; char *rec_script_path = NULL; char *rep_script_path = NULL; struct perf_session *session; char *script_path = NULL; const char **__argv; - int i, j, err; + int i, j, err = 0; struct perf_script script = { .tool = { .sample = process_sample_event, @@ -1730,14 +1731,15 @@ int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused) if (header || header_only) { perf_session__fprintf_info(session, stdout, show_full_info); if (header_only) - return 0; + goto out_delete; } script.session = session; if (cpu_list) { - if (perf_session__cpu_bitmap(session, cpu_list, cpu_bitmap)) - return -1; + err = perf_session__cpu_bitmap(session, cpu_list, cpu_bitmap); + if (err < 0) + goto out_delete; } if (!no_callchain) @@ -1752,53 +1754,60 @@ int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused) if (output_set_by_user()) { fprintf(stderr, "custom fields not supported for generated scripts"); - return -1; + err = -EINVAL; + goto out_delete; } input = open(file.path, O_RDONLY); /* input_name */ if (input < 0) { + err = -errno; perror("failed to open file"); - return -1; + goto out_delete; } err = fstat(input, &perf_stat); if (err < 0) { perror("failed to stat file"); - return -1; + goto out_delete; } if (!perf_stat.st_size) { fprintf(stderr, "zero-sized file, nothing to do!\n"); - return 0; + goto out_delete; } scripting_ops = script_spec__lookup(generate_script_lang); if (!scripting_ops) { fprintf(stderr, "invalid language specifier"); - return -1; + err = -ENOENT; + goto out_delete; } err = scripting_ops->generate_script(session->tevent.pevent, "perf-script"); - goto out; + goto out_delete; } if (script_name) { err = scripting_ops->start_script(script_name, argc, argv); if (err) - goto out; + goto out_delete; pr_debug("perf script started with script %s\n\n", script_name); + script_started = true; } err = perf_session__check_output_opt(session); if (err < 0) - goto out; + goto out_delete; err = __cmd_script(&script); +out_delete: perf_session__delete(session); - cleanup_scripting(); + + if (script_started) + cleanup_scripting(); out: return err; } -- cgit v1.1 From e96c674fe2c228fd5c16fd7a7607c60dea4cdaa2 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Tue, 12 Aug 2014 15:40:34 +0900 Subject: perf symbols: Fix a memory leak in vmlinux_path__init() When uname() failed, it should free vmlinux_path. Acked-by: Jiri Olsa Signed-off-by: Namhyung Kim Cc: Adrian Hunter Cc: David Ahern Cc: Ingo Molnar Cc: Jiri Olsa Cc: Minchan Kim Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1407825645-24586-3-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/symbol.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c index 581c568..009a9d0 100644 --- a/tools/perf/util/symbol.c +++ b/tools/perf/util/symbol.c @@ -1772,7 +1772,7 @@ static int vmlinux_path__init(void) return 0; if (uname(&uts) < 0) - return -1; + goto out_fail; snprintf(bf, sizeof(bf), "/boot/vmlinux-%s", uts.release); vmlinux_path[vmlinux_path__nr_entries] = strdup(bf); -- cgit v1.1 From fa10f316d59f39020d19d3f4a323598d05afa65c Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Tue, 12 Aug 2014 15:40:35 +0900 Subject: perf annotate: Move session handling out of __cmd_annotate() This is a preparation of fixing dso__load_kernel_sym(). It needs a session info before calling symbol__init(). Signed-off-by: Namhyung Kim Acked-by: Jiri Olsa Cc: Adrian Hunter Cc: David Ahern Cc: Ingo Molnar Cc: Jiri Olsa Cc: Minchan Kim Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1407825645-24586-4-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-annotate.c | 75 +++++++++++++++++++++++-------------------- 1 file changed, 40 insertions(+), 35 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c index 952b5ec..c0464dc 100644 --- a/tools/perf/builtin-annotate.c +++ b/tools/perf/builtin-annotate.c @@ -36,7 +36,8 @@ struct perf_annotate { struct perf_tool tool; - bool force, use_tui, use_stdio, use_gtk; + struct perf_session *session; + bool use_tui, use_stdio, use_gtk; bool full_paths; bool print_line; bool skip_missing; @@ -188,18 +189,9 @@ find_next: static int __cmd_annotate(struct perf_annotate *ann) { int ret; - struct perf_session *session; + struct perf_session *session = ann->session; struct perf_evsel *pos; u64 total_nr_samples; - struct perf_data_file file = { - .path = input_name, - .mode = PERF_DATA_MODE_READ, - .force = ann->force, - }; - - session = perf_session__new(&file, false, &ann->tool); - if (session == NULL) - return -ENOMEM; machines__set_symbol_filter(&session->machines, symbol__annotate_init); @@ -207,22 +199,22 @@ static int __cmd_annotate(struct perf_annotate *ann) ret = perf_session__cpu_bitmap(session, ann->cpu_list, ann->cpu_bitmap); if (ret) - goto out_delete; + goto out; } if (!objdump_path) { ret = perf_session_env__lookup_objdump(&session->header.env); if (ret) - goto out_delete; + goto out; } ret = perf_session__process_events(session, &ann->tool); if (ret) - goto out_delete; + goto out; if (dump_trace) { perf_session__fprintf_nr_events(session, stdout); - goto out_delete; + goto out; } if (verbose > 3) @@ -250,8 +242,8 @@ static int __cmd_annotate(struct perf_annotate *ann) } if (total_nr_samples == 0) { - ui__error("The %s file has no samples!\n", file.path); - goto out_delete; + ui__error("The %s file has no samples!\n", session->file->path); + goto out; } if (use_browser == 2) { @@ -261,24 +253,12 @@ static int __cmd_annotate(struct perf_annotate *ann) "perf_gtk__show_annotations"); if (show_annotations == NULL) { ui__error("GTK browser not found!\n"); - goto out_delete; + goto out; } show_annotations(); } -out_delete: - /* - * Speed up the exit process, for large files this can - * take quite a while. - * - * XXX Enable this when using valgrind or if we ever - * librarize this command. - * - * Also experiment with obstacks to see how much speed - * up we'll get here. - * - * perf_session__delete(session); - */ +out: return ret; } @@ -301,6 +281,10 @@ int cmd_annotate(int argc, const char **argv, const char *prefix __maybe_unused) .ordering_requires_timestamps = true, }, }; + struct perf_data_file file = { + .path = input_name, + .mode = PERF_DATA_MODE_READ, + }; const struct option options[] = { OPT_STRING('i', "input", &input_name, "file", "input file name"), @@ -308,7 +292,7 @@ int cmd_annotate(int argc, const char **argv, const char *prefix __maybe_unused) "only consider symbols in these dsos"), OPT_STRING('s', "symbol", &annotate.sym_hist_filter, "symbol", "symbol to annotate"), - OPT_BOOLEAN('f', "force", &annotate.force, "don't complain, do it"), + OPT_BOOLEAN('f', "force", &file.force, "don't complain, do it"), OPT_INCR('v', "verbose", &verbose, "be more verbose (show symbol address, etc)"), OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, @@ -341,6 +325,7 @@ int cmd_annotate(int argc, const char **argv, const char *prefix __maybe_unused) "Show event group information together"), OPT_END() }; + int ret; argc = parse_options(argc, argv, options, annotate_usage, 0); @@ -353,11 +338,16 @@ int cmd_annotate(int argc, const char **argv, const char *prefix __maybe_unused) setup_browser(true); + annotate.session = perf_session__new(&file, false, &annotate.tool); + if (annotate.session == NULL) + return -ENOMEM; + symbol_conf.priv_size = sizeof(struct annotation); symbol_conf.try_vmlinux_path = true; - if (symbol__init() < 0) - return -1; + ret = symbol__init(); + if (ret < 0) + goto out_delete; if (setup_sorting() < 0) usage_with_options(annotate_usage, options); @@ -373,5 +363,20 @@ int cmd_annotate(int argc, const char **argv, const char *prefix __maybe_unused) annotate.sym_hist_filter = argv[0]; } - return __cmd_annotate(&annotate); + ret = __cmd_annotate(&annotate); + +out_delete: + /* + * Speed up the exit process, for large files this can + * take quite a while. + * + * XXX Enable this when using valgrind or if we ever + * librarize this command. + * + * Also experiment with obstacks to see how much speed + * up we'll get here. + * + * perf_session__delete(session); + */ + return ret; } -- cgit v1.1 From e3ed75bb537a860a375ca1e09ad1b87c707f1636 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Tue, 12 Aug 2014 15:40:36 +0900 Subject: perf buildid-cache: Move session handling into cmd_buildid_cache() This is a preparation of fixing dso__load_kernel_sym(). It needs a session info before calling symbol__init(). Acked-by: Jiri Olsa Signed-off-by: Namhyung Kim Cc: Adrian Hunter Cc: David Ahern Cc: Ingo Molnar Cc: Jiri Olsa Cc: Minchan Kim Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1407825645-24586-5-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-buildid-cache.c | 35 +++++++++++++++++++++-------------- 1 file changed, 21 insertions(+), 14 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-buildid-cache.c b/tools/perf/builtin-buildid-cache.c index 2a2c78f..d91bfa6 100644 --- a/tools/perf/builtin-buildid-cache.c +++ b/tools/perf/builtin-buildid-cache.c @@ -246,20 +246,9 @@ static bool dso__missing_buildid_cache(struct dso *dso, int parm __maybe_unused) return true; } -static int build_id_cache__fprintf_missing(const char *filename, bool force, FILE *fp) +static int build_id_cache__fprintf_missing(struct perf_session *session, FILE *fp) { - struct perf_data_file file = { - .path = filename, - .mode = PERF_DATA_MODE_READ, - .force = force, - }; - struct perf_session *session = perf_session__new(&file, false, NULL); - if (session == NULL) - return -1; - perf_session__fprintf_dsos_buildid(session, fp, dso__missing_buildid_cache, 0); - perf_session__delete(session); - return 0; } @@ -303,6 +292,11 @@ int cmd_buildid_cache(int argc, const char **argv, *update_name_list_str = NULL, *kcore_filename; + struct perf_data_file file = { + .mode = PERF_DATA_MODE_READ, + }; + struct perf_session *session = NULL; + const struct option buildid_cache_options[] = { OPT_STRING('a', "add", &add_name_list_str, "file list", "file(s) to add"), @@ -326,8 +320,17 @@ int cmd_buildid_cache(int argc, const char **argv, argc = parse_options(argc, argv, buildid_cache_options, buildid_cache_usage, 0); + if (missing_filename) { + file.path = missing_filename; + file.force = force; + + session = perf_session__new(&file, false, NULL); + if (session == NULL) + return -1; + } + if (symbol__init() < 0) - return -1; + goto out; setup_pager(); @@ -370,7 +373,7 @@ int cmd_buildid_cache(int argc, const char **argv, } if (missing_filename) - ret = build_id_cache__fprintf_missing(missing_filename, force, stdout); + ret = build_id_cache__fprintf_missing(session, stdout); if (update_name_list_str) { list = strlist__new(true, update_name_list_str); @@ -394,5 +397,9 @@ int cmd_buildid_cache(int argc, const char **argv, build_id_cache__add_kcore(kcore_filename, debugdir, force)) pr_warning("Couldn't add %s\n", kcore_filename); +out: + if (session) + perf_session__delete(session); + return ret; } -- cgit v1.1 From 1cb8bdcca0e2f738a492c3857568cf34ba4a4373 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Tue, 12 Aug 2014 15:40:37 +0900 Subject: perf inject: Move session handling out of __cmd_inject() This is a preparation of fixing dso__load_kernel_sym(). It needs a session info before calling symbol__init(). Signed-off-by: Namhyung Kim Acked-by: Jiri Olsa Cc: Adrian Hunter Cc: David Ahern Cc: Ingo Molnar Cc: Jiri Olsa Cc: Minchan Kim Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1407825645-24586-6-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-inject.c | 29 +++++++++++++++++------------ 1 file changed, 17 insertions(+), 12 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-inject.c b/tools/perf/builtin-inject.c index ee875cc..18eaefd 100644 --- a/tools/perf/builtin-inject.c +++ b/tools/perf/builtin-inject.c @@ -23,6 +23,7 @@ struct perf_inject { struct perf_tool tool; + struct perf_session *session; bool build_ids; bool sched_stat; const char *input_name; @@ -340,12 +341,8 @@ static int perf_evsel__check_stype(struct perf_evsel *evsel, static int __cmd_inject(struct perf_inject *inject) { - struct perf_session *session; int ret = -EINVAL; - struct perf_data_file file = { - .path = inject->input_name, - .mode = PERF_DATA_MODE_READ, - }; + struct perf_session *session = inject->session; struct perf_data_file *file_out = &inject->output; signal(SIGINT, sig_handler); @@ -357,10 +354,6 @@ static int __cmd_inject(struct perf_inject *inject) inject->tool.tracing_data = perf_event__repipe_tracing_data; } - session = perf_session__new(&file, true, &inject->tool); - if (session == NULL) - return -ENOMEM; - if (inject->build_ids) { inject->tool.sample = perf_event__inject_buildid; } else if (inject->sched_stat) { @@ -396,8 +389,6 @@ static int __cmd_inject(struct perf_inject *inject) perf_session__write_header(session, session->evlist, file_out->fd, true); } - perf_session__delete(session); - return ret; } @@ -427,6 +418,11 @@ int cmd_inject(int argc, const char **argv, const char *prefix __maybe_unused) .mode = PERF_DATA_MODE_WRITE, }, }; + struct perf_data_file file = { + .mode = PERF_DATA_MODE_READ, + }; + int ret; + const struct option options[] = { OPT_BOOLEAN('b', "build-ids", &inject.build_ids, "Inject build-ids into the output stream"), @@ -461,8 +457,17 @@ int cmd_inject(int argc, const char **argv, const char *prefix __maybe_unused) return -1; } + file.path = inject.input_name; + inject.session = perf_session__new(&file, true, &inject.tool); + if (inject.session == NULL) + return -ENOMEM; + if (symbol__init() < 0) return -1; - return __cmd_inject(&inject); + ret = __cmd_inject(&inject); + + perf_session__delete(inject.session); + + return ret; } -- cgit v1.1 From 2b2b2c68c64fb9db392940b42355944064f2a4ca Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Tue, 12 Aug 2014 15:40:38 +0900 Subject: perf kmem: Move session handling out of __cmd_kmem() This is a preparation of fixing dso__load_kernel_sym(). It needs a session info before calling symbol__init(). Signed-off-by: Namhyung Kim Cc: Adrian Hunter Cc: David Ahern Cc: Ingo Molnar Cc: Jiri Olsa Cc: Minchan Kim Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1407825645-24586-7-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-kmem.c | 49 +++++++++++++++++++++++++++-------------------- 1 file changed, 28 insertions(+), 21 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-kmem.c b/tools/perf/builtin-kmem.c index 84b8239..349d9b4 100644 --- a/tools/perf/builtin-kmem.c +++ b/tools/perf/builtin-kmem.c @@ -405,10 +405,9 @@ static void sort_result(void) __sort_result(&root_caller_stat, &root_caller_sorted, &caller_sort); } -static int __cmd_kmem(void) +static int __cmd_kmem(struct perf_session *session) { int err = -EINVAL; - struct perf_session *session; const struct perf_evsel_str_handler kmem_tracepoints[] = { { "kmem:kmalloc", perf_evsel__process_alloc_event, }, { "kmem:kmem_cache_alloc", perf_evsel__process_alloc_event, }, @@ -417,31 +416,22 @@ static int __cmd_kmem(void) { "kmem:kfree", perf_evsel__process_free_event, }, { "kmem:kmem_cache_free", perf_evsel__process_free_event, }, }; - struct perf_data_file file = { - .path = input_name, - .mode = PERF_DATA_MODE_READ, - }; - - session = perf_session__new(&file, false, &perf_kmem); - if (session == NULL) - return -ENOMEM; if (!perf_session__has_traces(session, "kmem record")) - goto out_delete; + goto out; if (perf_session__set_tracepoints_handlers(session, kmem_tracepoints)) { pr_err("Initializing perf session tracepoint handlers failed\n"); - return -1; + goto out; } setup_pager(); err = perf_session__process_events(session, &perf_kmem); if (err != 0) - goto out_delete; + goto out; sort_result(); print_result(session); -out_delete: - perf_session__delete(session); +out: return err; } @@ -688,29 +678,46 @@ int cmd_kmem(int argc, const char **argv, const char *prefix __maybe_unused) NULL, NULL }; + struct perf_session *session; + struct perf_data_file file = { + .path = input_name, + .mode = PERF_DATA_MODE_READ, + }; + int ret = -1; + argc = parse_options_subcommand(argc, argv, kmem_options, kmem_subcommands, kmem_usage, 0); if (!argc) usage_with_options(kmem_usage, kmem_options); - symbol__init(); - if (!strncmp(argv[0], "rec", 3)) { + symbol__init(); return __cmd_record(argc, argv); - } else if (!strcmp(argv[0], "stat")) { + } + + session = perf_session__new(&file, false, &perf_kmem); + if (session == NULL) + return -ENOMEM; + + symbol__init(); + + if (!strcmp(argv[0], "stat")) { if (cpu__setup_cpunode_map()) - return -1; + goto out_delete; if (list_empty(&caller_sort)) setup_sorting(&caller_sort, default_sort_order); if (list_empty(&alloc_sort)) setup_sorting(&alloc_sort, default_sort_order); - return __cmd_kmem(); + ret = __cmd_kmem(session); } else usage_with_options(kmem_usage, kmem_options); - return 0; +out_delete: + perf_session__delete(session); + + return ret; } -- cgit v1.1 From 14d37f38e956ba0dd4f2206f68534eb418ecd905 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Tue, 12 Aug 2014 15:40:39 +0900 Subject: perf kvm: Move call to symbol__init() after creating session This is a preparation of fixing dso__load_kernel_sym(). It needs a session info before calling symbol__init(). Signed-off-by: Namhyung Kim Acked-by: Jiri Olsa Cc: Adrian Hunter Cc: David Ahern Cc: Ingo Molnar Cc: Jiri Olsa Cc: Minchan Kim Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1407825645-24586-8-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-kvm.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c index ff40475..7f2b555 100644 --- a/tools/perf/builtin-kvm.c +++ b/tools/perf/builtin-kvm.c @@ -1064,6 +1064,8 @@ static int read_events(struct perf_kvm_stat *kvm) return -EINVAL; } + symbol__init(); + if (!perf_session__has_traces(kvm->session, "kvm record")) return -EINVAL; @@ -1193,8 +1195,6 @@ kvm_events_report(struct perf_kvm_stat *kvm, int argc, const char **argv) NULL }; - symbol__init(); - if (argc) { argc = parse_options(argc, argv, kvm_events_report_options, -- cgit v1.1 From 6fd6c6b462c55f33c20f38051f1116dc52054d67 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Tue, 12 Aug 2014 15:40:40 +0900 Subject: perf lock: Move call to symbol__init() after creating session This is a preparation of fixing dso__load_kernel_sym(). It needs a session info before calling symbol__init(). Signed-off-by: Namhyung Kim Acked-by: Jiri Olsa Cc: Adrian Hunter Cc: David Ahern Cc: Ingo Molnar Cc: Jiri Olsa Cc: Minchan Kim Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1407825645-24586-9-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-lock.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/builtin-lock.c b/tools/perf/builtin-lock.c index c8122d3..d73580b 100644 --- a/tools/perf/builtin-lock.c +++ b/tools/perf/builtin-lock.c @@ -865,6 +865,8 @@ static int __cmd_report(bool display_info) return -ENOMEM; } + symbol__init(); + if (!perf_session__has_traces(session, "lock record")) goto out_delete; @@ -974,7 +976,6 @@ int cmd_lock(int argc, const char **argv, const char *prefix __maybe_unused) unsigned int i; int rc = 0; - symbol__init(); for (i = 0; i < LOCKHASH_SIZE; i++) INIT_LIST_HEAD(lockhash_table + i); -- cgit v1.1 From 0493410612486cadaa4e076caf4df3fa9cd20fde Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Tue, 12 Aug 2014 15:40:41 +0900 Subject: perf sched: Move call to symbol__init() after creating session This is a preparation of fixing dso__load_kernel_sym(). It needs a session info before calling symbol__init(). Signed-off-by: Namhyung Kim Acked-by: Jiri Olsa Cc: Adrian Hunter Cc: David Ahern Cc: Ingo Molnar Cc: Jiri Olsa Cc: Minchan Kim Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1407825645-24586-10-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-sched.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c index 7c16aeb..dcd9ebf 100644 --- a/tools/perf/builtin-sched.c +++ b/tools/perf/builtin-sched.c @@ -1462,6 +1462,8 @@ static int perf_sched__read_events(struct perf_sched *sched, return -1; } + symbol__init(); + if (perf_session__set_tracepoints_handlers(session, handlers)) goto out_delete; @@ -1747,7 +1749,6 @@ int cmd_sched(int argc, const char **argv, const char *prefix __maybe_unused) if (!strcmp(argv[0], "script")) return cmd_script(argc, argv, prefix); - symbol__init(); if (!strncmp(argv[0], "rec", 3)) { return __cmd_record(argc, argv); } else if (!strncmp(argv[0], "lat", 3)) { -- cgit v1.1 From 38520dc31206bae1dc811ddd59ccea3a6536784d Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Tue, 12 Aug 2014 15:40:42 +0900 Subject: perf script: Move call to symbol__init() after creating session This is a preparation of fixing dso__load_kernel_sym(). It needs a session info before calling symbol__init(). Signed-off-by: Namhyung Kim Acked-by: Jiri Olsa Cc: Adrian Hunter Cc: David Ahern Cc: Ingo Molnar Cc: Jiri Olsa Cc: Minchan Kim Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1407825645-24586-11-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-script.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c index c84d723..9ca7a2d 100644 --- a/tools/perf/builtin-script.c +++ b/tools/perf/builtin-script.c @@ -1719,8 +1719,6 @@ int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused) exit(-1); } - if (symbol__init() < 0) - return -1; if (!script_name) setup_pager(); @@ -1734,6 +1732,9 @@ int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused) goto out_delete; } + if (symbol__init() < 0) + goto out_delete; + script.session = session; if (cpu_list) { -- cgit v1.1 From dc5c8190b800dc59eff6bb2aa47ea749712197df Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Tue, 12 Aug 2014 15:40:43 +0900 Subject: perf timechart: Move call to symbol__init() after creating session This is a preparation of fixing dso__load_kernel_sym(). It needs a session info before calling symbol__init(). Signed-off-by: Namhyung Kim Acked-by: Jiri Olsa Cc: Adrian Hunter Cc: David Ahern Cc: Ingo Molnar Cc: Jiri Olsa Cc: Minchan Kim Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1407825645-24586-12-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-timechart.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-timechart.c b/tools/perf/builtin-timechart.c index 912e3b5..df3b1c5 100644 --- a/tools/perf/builtin-timechart.c +++ b/tools/perf/builtin-timechart.c @@ -1607,6 +1607,8 @@ static int __cmd_timechart(struct timechart *tchart, const char *output_name) if (session == NULL) return -ENOMEM; + symbol__init(); + (void)perf_header__process_sections(&session->header, perf_data_file__fd(session->file), tchart, @@ -1982,8 +1984,6 @@ int cmd_timechart(int argc, const char **argv, return -1; } - symbol__init(); - if (argc && !strncmp(argv[0], "rec", 3)) { argc = parse_options(argc, argv, record_options, record_usage, PARSE_OPT_STOP_AT_NON_OPTION); -- cgit v1.1 From cb2ffae241cfdd6d90acb7ec5f52ad8401885dd2 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Tue, 12 Aug 2014 15:40:44 +0900 Subject: perf trace: Move call to symbol__init() after creating session This is a preparation of fixing dso__load_kernel_sym(). It needs a session info before calling symbol__init(). Signed-off-by: Namhyung Kim Cc: Adrian Hunter Cc: David Ahern Cc: Ingo Molnar Cc: Jiri Olsa Cc: Minchan Kim Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1407825645-24586-13-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-trace.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index 20fac50..8a83bd8 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -2241,13 +2241,13 @@ static int trace__replay(struct trace *trace) /* add tid to output */ trace->multiple_threads = true; - if (symbol__init() < 0) - return -1; - session = perf_session__new(&file, false, &trace->tool); if (session == NULL) return -ENOMEM; + if (symbol__init() < 0) + goto out; + trace->host = &session->machines.host; err = perf_session__set_tracepoints_handlers(session, handlers); -- cgit v1.1 From 0a7e6d1b6844bec2d6817615a693c7fce447b80d Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Tue, 12 Aug 2014 15:40:45 +0900 Subject: perf tools: Check recorded kernel version when finding vmlinux Currently vmlinux_path__init() only tries to find vmlinux file from current directory, /boot and some canonical directories with version number of the running kernel. This can be a problem when reporting old data recorded on a kernel version not running currently. We can use --symfs option for this but it's annoying for user to do it always. As we already have the info in the perf.data file, it can be changed to use it for the search automatically. Before: $ perf report ... # Samples: 4K of event 'cpu-clock' # Event count (approx.): 1067250000 # # Overhead Command Shared Object Symbol # ........ .......... ................. .............................. 71.87% swapper [kernel.kallsyms] [k] recover_probed_instruction After: # Overhead Command Shared Object Symbol # ........ .......... ................. .................... 71.87% swapper [kernel.kallsyms] [k] native_safe_halt This requires to change signature of symbol__init() to receive struct perf_session_env *. Reported-by: Minchan Kim Signed-off-by: Namhyung Kim Cc: Adrian Hunter Cc: David Ahern Cc: Ingo Molnar Cc: Jiri Olsa Cc: Masami Hiramatsu Cc: Minchan Kim Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1407825645-24586-14-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-annotate.c | 2 +- tools/perf/builtin-buildid-cache.c | 2 +- tools/perf/builtin-diff.c | 2 +- tools/perf/builtin-inject.c | 2 +- tools/perf/builtin-kmem.c | 4 ++-- tools/perf/builtin-kvm.c | 4 ++-- tools/perf/builtin-lock.c | 2 +- tools/perf/builtin-mem.c | 2 +- tools/perf/builtin-record.c | 2 +- tools/perf/builtin-report.c | 2 +- tools/perf/builtin-sched.c | 2 +- tools/perf/builtin-script.c | 2 +- tools/perf/builtin-timechart.c | 2 +- tools/perf/builtin-top.c | 2 +- tools/perf/builtin-trace.c | 4 ++-- tools/perf/tests/builtin-test.c | 2 +- tools/perf/util/probe-event.c | 2 +- tools/perf/util/symbol.c | 26 +++++++++++++++++--------- tools/perf/util/symbol.h | 3 ++- 19 files changed, 39 insertions(+), 30 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c index c0464dc..d4da692 100644 --- a/tools/perf/builtin-annotate.c +++ b/tools/perf/builtin-annotate.c @@ -345,7 +345,7 @@ int cmd_annotate(int argc, const char **argv, const char *prefix __maybe_unused) symbol_conf.priv_size = sizeof(struct annotation); symbol_conf.try_vmlinux_path = true; - ret = symbol__init(); + ret = symbol__init(&annotate.session->header.env); if (ret < 0) goto out_delete; diff --git a/tools/perf/builtin-buildid-cache.c b/tools/perf/builtin-buildid-cache.c index d91bfa6..ac5838e 100644 --- a/tools/perf/builtin-buildid-cache.c +++ b/tools/perf/builtin-buildid-cache.c @@ -329,7 +329,7 @@ int cmd_buildid_cache(int argc, const char **argv, return -1; } - if (symbol__init() < 0) + if (symbol__init(session ? &session->header.env : NULL) < 0) goto out; setup_pager(); diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c index c10cc44..190d0b6 100644 --- a/tools/perf/builtin-diff.c +++ b/tools/perf/builtin-diff.c @@ -1143,7 +1143,7 @@ int cmd_diff(int argc, const char **argv, const char *prefix __maybe_unused) argc = parse_options(argc, argv, options, diff_usage, 0); - if (symbol__init() < 0) + if (symbol__init(NULL) < 0) return -1; if (data_init(argc, argv) < 0) diff --git a/tools/perf/builtin-inject.c b/tools/perf/builtin-inject.c index 18eaefd..3a62b6b 100644 --- a/tools/perf/builtin-inject.c +++ b/tools/perf/builtin-inject.c @@ -462,7 +462,7 @@ int cmd_inject(int argc, const char **argv, const char *prefix __maybe_unused) if (inject.session == NULL) return -ENOMEM; - if (symbol__init() < 0) + if (symbol__init(&inject.session->header.env) < 0) return -1; ret = __cmd_inject(&inject); diff --git a/tools/perf/builtin-kmem.c b/tools/perf/builtin-kmem.c index 349d9b4..2376218 100644 --- a/tools/perf/builtin-kmem.c +++ b/tools/perf/builtin-kmem.c @@ -692,7 +692,7 @@ int cmd_kmem(int argc, const char **argv, const char *prefix __maybe_unused) usage_with_options(kmem_usage, kmem_options); if (!strncmp(argv[0], "rec", 3)) { - symbol__init(); + symbol__init(NULL); return __cmd_record(argc, argv); } @@ -700,7 +700,7 @@ int cmd_kmem(int argc, const char **argv, const char *prefix __maybe_unused) if (session == NULL) return -ENOMEM; - symbol__init(); + symbol__init(&session->header.env); if (!strcmp(argv[0], "stat")) { if (cpu__setup_cpunode_map()) diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c index 7f2b555..14d03ed 100644 --- a/tools/perf/builtin-kvm.c +++ b/tools/perf/builtin-kvm.c @@ -1064,7 +1064,7 @@ static int read_events(struct perf_kvm_stat *kvm) return -EINVAL; } - symbol__init(); + symbol__init(&kvm->session->header.env); if (!perf_session__has_traces(kvm->session, "kvm record")) return -EINVAL; @@ -1314,7 +1314,7 @@ static int kvm_events_live(struct perf_kvm_stat *kvm, kvm->opts.target.uid_str = NULL; kvm->opts.target.uid = UINT_MAX; - symbol__init(); + symbol__init(NULL); disable_buildid_cache(); use_browser = 0; diff --git a/tools/perf/builtin-lock.c b/tools/perf/builtin-lock.c index d73580b..92790ed 100644 --- a/tools/perf/builtin-lock.c +++ b/tools/perf/builtin-lock.c @@ -865,7 +865,7 @@ static int __cmd_report(bool display_info) return -ENOMEM; } - symbol__init(); + symbol__init(&session->header.env); if (!perf_session__has_traces(session, "lock record")) goto out_delete; diff --git a/tools/perf/builtin-mem.c b/tools/perf/builtin-mem.c index 80e57c8..8b4a87f 100644 --- a/tools/perf/builtin-mem.c +++ b/tools/perf/builtin-mem.c @@ -133,7 +133,7 @@ static int report_raw_events(struct perf_mem *mem) goto out_delete; } - if (symbol__init() < 0) + if (symbol__init(&session->header.env) < 0) return -1; printf("# PID, TID, IP, ADDR, LOCAL WEIGHT, DSRC, SYMBOL\n"); diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index ca0251e..4db670d 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -908,7 +908,7 @@ int cmd_record(int argc, const char **argv, const char *prefix __maybe_unused) usage_with_options(record_usage, record_options); } - symbol__init(); + symbol__init(NULL); if (symbol_conf.kptr_restrict) pr_warning( diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index 041e93d..b9e0fca 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -798,7 +798,7 @@ repeat: } } - if (symbol__init() < 0) + if (symbol__init(&session->header.env) < 0) goto error; if (argc) { diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c index dcd9ebf..f5874a2 100644 --- a/tools/perf/builtin-sched.c +++ b/tools/perf/builtin-sched.c @@ -1462,7 +1462,7 @@ static int perf_sched__read_events(struct perf_sched *sched, return -1; } - symbol__init(); + symbol__init(&session->header.env); if (perf_session__set_tracepoints_handlers(session, handlers)) goto out_delete; diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c index 9ca7a2d..37d2b60 100644 --- a/tools/perf/builtin-script.c +++ b/tools/perf/builtin-script.c @@ -1732,7 +1732,7 @@ int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused) goto out_delete; } - if (symbol__init() < 0) + if (symbol__init(&session->header.env) < 0) goto out_delete; script.session = session; diff --git a/tools/perf/builtin-timechart.c b/tools/perf/builtin-timechart.c index df3b1c5..48eea6c 100644 --- a/tools/perf/builtin-timechart.c +++ b/tools/perf/builtin-timechart.c @@ -1607,7 +1607,7 @@ static int __cmd_timechart(struct timechart *tchart, const char *output_name) if (session == NULL) return -ENOMEM; - symbol__init(); + symbol__init(&session->header.env); (void)perf_header__process_sections(&session->header, perf_data_file__fd(session->file), diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index 0ab3ea7..4b0e15c 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -1234,7 +1234,7 @@ int cmd_top(int argc, const char **argv, const char *prefix __maybe_unused) symbol_conf.priv_size = sizeof(struct annotation); symbol_conf.try_vmlinux_path = (symbol_conf.vmlinux_name == NULL); - if (symbol__init() < 0) + if (symbol__init(NULL) < 0) return -1; sort__setup_elide(stdout); diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index 8a83bd8..d080b9c 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -1411,7 +1411,7 @@ static int trace__tool_process(struct perf_tool *tool, static int trace__symbols_init(struct trace *trace, struct perf_evlist *evlist) { - int err = symbol__init(); + int err = symbol__init(NULL); if (err) return err; @@ -2245,7 +2245,7 @@ static int trace__replay(struct trace *trace) if (session == NULL) return -ENOMEM; - if (symbol__init() < 0) + if (symbol__init(&session->header.env) < 0) goto out; trace->host = &session->machines.host; diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c index 6f8b01b..c6796d2 100644 --- a/tools/perf/tests/builtin-test.c +++ b/tools/perf/tests/builtin-test.c @@ -297,7 +297,7 @@ int cmd_test(int argc, const char **argv, const char *prefix __maybe_unused) symbol_conf.sort_by_name = true; symbol_conf.try_vmlinux_path = true; - if (symbol__init() < 0) + if (symbol__init(NULL) < 0) return -1; if (skip != NULL) diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c index 443225c..784ea42 100644 --- a/tools/perf/util/probe-event.c +++ b/tools/perf/util/probe-event.c @@ -79,7 +79,7 @@ static int init_symbol_maps(bool user_only) int ret; symbol_conf.sort_by_name = true; - ret = symbol__init(); + ret = symbol__init(NULL); if (ret < 0) { pr_debug("Failed to init symbol map.\n"); goto out; diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c index 009a9d0..ac098a3 100644 --- a/tools/perf/util/symbol.c +++ b/tools/perf/util/symbol.c @@ -15,6 +15,7 @@ #include "machine.h" #include "symbol.h" #include "strlist.h" +#include "header.h" #include #include @@ -1749,10 +1750,11 @@ static void vmlinux_path__exit(void) zfree(&vmlinux_path); } -static int vmlinux_path__init(void) +static int vmlinux_path__init(struct perf_session_env *env) { struct utsname uts; char bf[PATH_MAX]; + char *kernel_version; vmlinux_path = malloc(sizeof(char *) * 5); if (vmlinux_path == NULL) @@ -1767,25 +1769,31 @@ static int vmlinux_path__init(void) goto out_fail; ++vmlinux_path__nr_entries; - /* only try running kernel version if no symfs was given */ + /* only try kernel version if no symfs was given */ if (symbol_conf.symfs[0] != 0) return 0; - if (uname(&uts) < 0) - goto out_fail; + if (env) { + kernel_version = env->os_release; + } else { + if (uname(&uts) < 0) + goto out_fail; + + kernel_version = uts.release; + } - snprintf(bf, sizeof(bf), "/boot/vmlinux-%s", uts.release); + snprintf(bf, sizeof(bf), "/boot/vmlinux-%s", kernel_version); vmlinux_path[vmlinux_path__nr_entries] = strdup(bf); if (vmlinux_path[vmlinux_path__nr_entries] == NULL) goto out_fail; ++vmlinux_path__nr_entries; - snprintf(bf, sizeof(bf), "/lib/modules/%s/build/vmlinux", uts.release); + snprintf(bf, sizeof(bf), "/lib/modules/%s/build/vmlinux", kernel_version); vmlinux_path[vmlinux_path__nr_entries] = strdup(bf); if (vmlinux_path[vmlinux_path__nr_entries] == NULL) goto out_fail; ++vmlinux_path__nr_entries; snprintf(bf, sizeof(bf), "/usr/lib/debug/lib/modules/%s/vmlinux", - uts.release); + kernel_version); vmlinux_path[vmlinux_path__nr_entries] = strdup(bf); if (vmlinux_path[vmlinux_path__nr_entries] == NULL) goto out_fail; @@ -1831,7 +1839,7 @@ static bool symbol__read_kptr_restrict(void) return value; } -int symbol__init(void) +int symbol__init(struct perf_session_env *env) { const char *symfs; @@ -1846,7 +1854,7 @@ int symbol__init(void) symbol_conf.priv_size += (sizeof(struct symbol_name_rb_node) - sizeof(struct symbol)); - if (symbol_conf.try_vmlinux_path && vmlinux_path__init() < 0) + if (symbol_conf.try_vmlinux_path && vmlinux_path__init(env) < 0) return -1; if (symbol_conf.field_sep && *symbol_conf.field_sep == '.') { diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h index 196b291..b95e3a3 100644 --- a/tools/perf/util/symbol.h +++ b/tools/perf/util/symbol.h @@ -262,7 +262,8 @@ int modules__parse(const char *filename, void *arg, int filename__read_debuglink(const char *filename, char *debuglink, size_t size); -int symbol__init(void); +struct perf_session_env; +int symbol__init(struct perf_session_env *env); void symbol__exit(void); void symbol__elf_init(void); struct symbol *symbol__new(u64 start, u64 len, u8 binding, const char *name); -- cgit v1.1 From 82162b5ae3d152fd7d887b36213f5b6785fe1294 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Wed, 13 Aug 2014 15:02:41 +0900 Subject: perf hists browser: Fix a small callchain display bug The currently when perf TUI report shows callchain, the first level chains have bogus '+' sign even though only the last one has children. Since they are on a single line of the chain, toggling intermediate entries has no effect. Fix it to show '+' sign at the last entry only. Note that non-first level callchain entries don't have this problem. Before: --------------------------------------------------------------------------- Children Self Command Shared Object Symbols - 40.70% 0.00% swapper [kernel.kallsyms] [k] cpuidle_wrap_enter + cpuidle_wrap_enter + cpuidle_enter_tk + cpuidle_idle_call + cpu_idle After: --------------------------------------------------------------------------- Children Self Command Shared Object Symbols - 40.70% 0.00% swapper [kernel.kallsyms] [k] cpuidle_wrap_enter cpuidle_wrap_enter cpuidle_enter_tk cpuidle_idle_call + cpu_idle Signed-off-by: Namhyung Kim Acked-by: Ingo Molnar Cc: Andi Kleen Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Frederic Weisbecker Link: http://lkml.kernel.org/r/1407909761-10822-1-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/ui/browsers/hists.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c index 045c1e1..1818d12 100644 --- a/tools/perf/ui/browsers/hists.c +++ b/tools/perf/ui/browsers/hists.c @@ -228,8 +228,10 @@ static void callchain_node__init_have_children(struct callchain_node *node) { struct callchain_list *chain; - list_for_each_entry(chain, &node->val, list) + if (!list_empty(&node->val)) { + chain = list_entry(node->val.prev, struct callchain_list, list); chain->ms.has_children = !RB_EMPTY_ROOT(&node->rb_root); + } callchain_node__init_have_children_rb_tree(node); } -- cgit v1.1 From edd114e213751c3274891f692be66eb65771f278 Mon Sep 17 00:00:00 2001 From: "naota@elisp.net" Date: Thu, 7 Aug 2014 00:04:49 +0900 Subject: perf report: Set proper sort__mode for the branch option When you specify "--branch-stack"("-b" for short) or "--no-branch-stack", "branch_mode" variable is set to 1 or 0 respectively. However, the code is just checking if the variable is -1 or not, ignoring "branch_mode == 1" case. Thus "perf report -b" dose not show its result with the branch sorted mode. This patch fix the problem. Signed-off-by: Naohiro Aota Acked-by: Namhyung Kim Cc: Ingo Molnar Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/87y4v1fylq.fsf@elisp.net Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-report.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index b9e0fca..3da59a8 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -730,7 +730,7 @@ repeat: has_br_stack = perf_header__has_feat(&session->header, HEADER_BRANCH_STACK); - if (branch_mode == -1 && has_br_stack) { + if ((branch_mode == -1 && has_br_stack) || branch_mode == 1) { sort__mode = SORT_MODE__BRANCH; symbol_conf.cumulate_callchain = false; } -- cgit v1.1 From 701937bd59cc94b6913086feb62f05ae565ff2de Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Tue, 12 Aug 2014 17:16:05 +0900 Subject: perf top: Fix -z option behavior The current -z option does almost nothing. It doesn't zero the existing samples so that we can see profiles of exited process after last refresh. It seems it only affects annotation. This patch clears existing entries before processing if -z option is given. For this original decaying logic also moved before processing. Reported-by: Stephane Eranian Tested-by: Stephane Eranian Signed-off-by: Namhyung Kim Cc: David Ahern Cc: Ingo Molnar Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1407831366-28892-1-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-top.c | 23 +++++++++++++++++------ tools/perf/util/hist.c | 22 ++++++++++++++++++++++ tools/perf/util/hist.h | 1 + 3 files changed, 40 insertions(+), 6 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index 4b0e15c..87a6615 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -276,11 +276,17 @@ static void perf_top__print_sym_table(struct perf_top *top) return; } + if (top->zero) { + hists__delete_entries(&top->sym_evsel->hists); + } else { + hists__decay_entries(&top->sym_evsel->hists, + top->hide_user_symbols, + top->hide_kernel_symbols); + } + hists__collapse_resort(&top->sym_evsel->hists, NULL); hists__output_resort(&top->sym_evsel->hists); - hists__decay_entries(&top->sym_evsel->hists, - top->hide_user_symbols, - top->hide_kernel_symbols); + hists__output_recalc_col_len(&top->sym_evsel->hists, top->print_entries - printed); putchar('\n'); @@ -542,11 +548,16 @@ static void perf_top__sort_new_samples(void *arg) if (t->evlist->selected != NULL) t->sym_evsel = t->evlist->selected; + if (t->zero) { + hists__delete_entries(&t->sym_evsel->hists); + } else { + hists__decay_entries(&t->sym_evsel->hists, + t->hide_user_symbols, + t->hide_kernel_symbols); + } + hists__collapse_resort(&t->sym_evsel->hists, NULL); hists__output_resort(&t->sym_evsel->hists); - hists__decay_entries(&t->sym_evsel->hists, - t->hide_user_symbols, - t->hide_kernel_symbols); } static void *display_thread_tui(void *arg) diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c index 30df618..86569fa 100644 --- a/tools/perf/util/hist.c +++ b/tools/perf/util/hist.c @@ -277,6 +277,28 @@ void hists__decay_entries(struct hists *hists, bool zap_user, bool zap_kernel) } } +void hists__delete_entries(struct hists *hists) +{ + struct rb_node *next = rb_first(&hists->entries); + struct hist_entry *n; + + while (next) { + n = rb_entry(next, struct hist_entry, rb_node); + next = rb_next(&n->rb_node); + + rb_erase(&n->rb_node, &hists->entries); + + if (sort__need_collapse) + rb_erase(&n->rb_node_in, &hists->entries_collapsed); + + --hists->nr_entries; + if (!n->filtered) + --hists->nr_non_filtered_entries; + + hist_entry__free(n); + } +} + /* * histogram, sorted on item, collects periods */ diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h index 95405a8..8c9c70e 100644 --- a/tools/perf/util/hist.h +++ b/tools/perf/util/hist.h @@ -152,6 +152,7 @@ void hists__output_resort(struct hists *hists); void hists__collapse_resort(struct hists *hists, struct ui_progress *prog); void hists__decay_entries(struct hists *hists, bool zap_user, bool zap_kernel); +void hists__delete_entries(struct hists *hists); void hists__output_recalc_col_len(struct hists *hists, int max_rows); u64 hists__total_period(struct hists *hists); -- cgit v1.1 From 42337a222c93cd22864f20ef9b157765ab1086a0 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Tue, 12 Aug 2014 17:16:06 +0900 Subject: perf top: Handle 'z' key for toggle zeroing samples in TUI The perf top TUI lacks 'z' key support to toggle sample zeroing. Add it. Reported-by: Stephane Eranian Tested-by: Stephane Eranian Signed-off-by: Namhyung Kim Cc: David Ahern Cc: Ingo Molnar Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1407831366-28892-2-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/ui/browsers/hists.c | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'tools') diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c index 1818d12..4892480 100644 --- a/tools/perf/ui/browsers/hists.c +++ b/tools/perf/ui/browsers/hists.c @@ -10,6 +10,7 @@ #include "../../util/pstack.h" #include "../../util/sort.h" #include "../../util/util.h" +#include "../../util/top.h" #include "../../arch/common.h" #include "../browser.h" @@ -1532,6 +1533,7 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events, "P Print histograms to perf.hist.N\n" "t Zoom into current Thread\n" "V Verbose (DSO names in callchains, etc)\n" + "z Toggle zeroing of samples\n" "/ Filter symbol by name"; if (browser == NULL) @@ -1632,6 +1634,13 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events, case 'F': symbol_conf.filter_relative ^= 1; continue; + case 'z': + if (!is_report_browser(hbt)) { + struct perf_top *top = hbt->arg; + + top->zero = !top->zero; + } + continue; case K_F1: case 'h': case '?': -- cgit v1.1 From e71e79457b79a52827039d9d7f253321bfd342bd Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Thu, 31 Jul 2014 14:47:42 +0900 Subject: perf symbols: Don't demangle parameters and such by default Some C++ symbols have very long name and they make column length longer. Most of them are about parameters including templates and we can ignore such info most of time IMHO. This patch passes DMGL_NO_OPTS by default when calling bfd_demangle(). One can still see full symbols with -v/--verbose option. before: JS_CallFunctionValue(JSContext*, JSObject*, JS::Value, unsigned int, JS::Value*, JS::Value*) after: JS_CallFunctionValue Signed-off-by: Namhyung Kim Cc: Ingo Molnar Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1406785662-5534-9-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/symbol-elf.c | 7 +++++-- tools/perf/util/symbol.h | 1 + 2 files changed, 6 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c index d753499..ec5ec1c 100644 --- a/tools/perf/util/symbol-elf.c +++ b/tools/perf/util/symbol-elf.c @@ -939,8 +939,11 @@ new_symbol: * to it... */ if (symbol_conf.demangle) { - demangled = bfd_demangle(NULL, elf_name, - DMGL_PARAMS | DMGL_ANSI); + int demangle_flags = DMGL_NO_OPTS; + if (verbose) + demangle_flags = DMGL_PARAMS | DMGL_ANSI; + + demangled = bfd_demangle(NULL, elf_name, demangle_flags); if (demangled != NULL) elf_name = demangled; } diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h index b95e3a3..3f95ea0 100644 --- a/tools/perf/util/symbol.h +++ b/tools/perf/util/symbol.h @@ -60,6 +60,7 @@ extern Elf_Scn *elf_section_by_name(Elf *elf, GElf_Ehdr *ep, #endif #ifndef DMGL_PARAMS +#define DMGL_NO_OPTS 0 /* For readability... */ #define DMGL_PARAMS (1 << 0) /* Include function args */ #define DMGL_ANSI (1 << 1) /* Include const, volatile, etc */ #endif -- cgit v1.1 From f247fb8191aa7f10d3f6c987e8ef0853ae789a02 Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Thu, 31 Jul 2014 09:00:46 +0300 Subject: perf symbols: Fix missing label symbols Label symbols are missing because elf_sec__is_a() fails to find the section because the section strings do not match the section headers because the sections headers are from the 'runtime' object and the sections strings are from the 'symbol source' object. Fix by getting the section strings from the 'runtime' object so that they match the section headers. Signed-off-by: Adrian Hunter Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1406786474-9306-4-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/symbol-elf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c index ec5ec1c..9fb5e9e 100644 --- a/tools/perf/util/symbol-elf.c +++ b/tools/perf/util/symbol-elf.c @@ -736,7 +736,7 @@ int dso__load_sym(struct dso *dso, struct map *map, if (symstrs == NULL) goto out_elf_end; - sec_strndx = elf_getscn(elf, ehdr.e_shstrndx); + sec_strndx = elf_getscn(runtime_ss->elf, runtime_ss->ehdr.e_shstrndx); if (sec_strndx == NULL) goto out_elf_end; -- cgit v1.1 From bf8e8f4b832972c76d64ab2e2837a48397144887 Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Thu, 31 Jul 2014 09:00:51 +0300 Subject: perf evlist: Add 'system_wide' option Add an option to cause a selected event to be opened always without a pid when configured by perf_evsel__config(). This is needed when using the sched_switch tracepoint to follow object code execution. sched_switch occurs before the task switch and so it cannot record it in a context limited to that task. Note that also means that sched_switch is useless when capturing data per-thread, as is the 'context-switches' software event for the same reason. Signed-off-by: Adrian Hunter Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1406786474-9306-9-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/evlist.c | 45 +++++++++++++++++++++++++++++++++++++-------- tools/perf/util/evsel.c | 31 ++++++++++++++++++++++++++----- tools/perf/util/evsel.h | 1 + 3 files changed, 64 insertions(+), 13 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index 3b366c0..c74d8ec 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -265,17 +265,27 @@ int perf_evlist__add_newtp(struct perf_evlist *evlist, return 0; } +static int perf_evlist__nr_threads(struct perf_evlist *evlist, + struct perf_evsel *evsel) +{ + if (evsel->system_wide) + return 1; + else + return thread_map__nr(evlist->threads); +} + void perf_evlist__disable(struct perf_evlist *evlist) { int cpu, thread; struct perf_evsel *pos; int nr_cpus = cpu_map__nr(evlist->cpus); - int nr_threads = thread_map__nr(evlist->threads); + int nr_threads; for (cpu = 0; cpu < nr_cpus; cpu++) { evlist__for_each(evlist, pos) { if (!perf_evsel__is_group_leader(pos) || !pos->fd) continue; + nr_threads = perf_evlist__nr_threads(evlist, pos); for (thread = 0; thread < nr_threads; thread++) ioctl(FD(pos, cpu, thread), PERF_EVENT_IOC_DISABLE, 0); @@ -288,12 +298,13 @@ void perf_evlist__enable(struct perf_evlist *evlist) int cpu, thread; struct perf_evsel *pos; int nr_cpus = cpu_map__nr(evlist->cpus); - int nr_threads = thread_map__nr(evlist->threads); + int nr_threads; for (cpu = 0; cpu < nr_cpus; cpu++) { evlist__for_each(evlist, pos) { if (!perf_evsel__is_group_leader(pos) || !pos->fd) continue; + nr_threads = perf_evlist__nr_threads(evlist, pos); for (thread = 0; thread < nr_threads; thread++) ioctl(FD(pos, cpu, thread), PERF_EVENT_IOC_ENABLE, 0); @@ -305,12 +316,14 @@ int perf_evlist__disable_event(struct perf_evlist *evlist, struct perf_evsel *evsel) { int cpu, thread, err; + int nr_cpus = cpu_map__nr(evlist->cpus); + int nr_threads = perf_evlist__nr_threads(evlist, evsel); if (!evsel->fd) return 0; - for (cpu = 0; cpu < evlist->cpus->nr; cpu++) { - for (thread = 0; thread < evlist->threads->nr; thread++) { + for (cpu = 0; cpu < nr_cpus; cpu++) { + for (thread = 0; thread < nr_threads; thread++) { err = ioctl(FD(evsel, cpu, thread), PERF_EVENT_IOC_DISABLE, 0); if (err) @@ -324,12 +337,14 @@ int perf_evlist__enable_event(struct perf_evlist *evlist, struct perf_evsel *evsel) { int cpu, thread, err; + int nr_cpus = cpu_map__nr(evlist->cpus); + int nr_threads = perf_evlist__nr_threads(evlist, evsel); if (!evsel->fd) return -EINVAL; - for (cpu = 0; cpu < evlist->cpus->nr; cpu++) { - for (thread = 0; thread < evlist->threads->nr; thread++) { + for (cpu = 0; cpu < nr_cpus; cpu++) { + for (thread = 0; thread < nr_threads; thread++) { err = ioctl(FD(evsel, cpu, thread), PERF_EVENT_IOC_ENABLE, 0); if (err) @@ -343,7 +358,16 @@ static int perf_evlist__alloc_pollfd(struct perf_evlist *evlist) { int nr_cpus = cpu_map__nr(evlist->cpus); int nr_threads = thread_map__nr(evlist->threads); - int nfds = nr_cpus * nr_threads * evlist->nr_entries; + int nfds = 0; + struct perf_evsel *evsel; + + list_for_each_entry(evsel, &evlist->entries, node) { + if (evsel->system_wide) + nfds += nr_cpus; + else + nfds += nr_cpus * nr_threads; + } + evlist->pollfd = malloc(sizeof(struct pollfd) * nfds); return evlist->pollfd != NULL ? 0 : -ENOMEM; } @@ -636,7 +660,12 @@ static int perf_evlist__mmap_per_evsel(struct perf_evlist *evlist, int idx, struct perf_evsel *evsel; evlist__for_each(evlist, evsel) { - int fd = FD(evsel, cpu, thread); + int fd; + + if (evsel->system_wide && thread) + continue; + + fd = FD(evsel, cpu, thread); if (*output == -1) { *output = fd; diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index 0c8919d..66de9a7 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -695,6 +695,10 @@ void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts) int perf_evsel__alloc_fd(struct perf_evsel *evsel, int ncpus, int nthreads) { int cpu, thread; + + if (evsel->system_wide) + nthreads = 1; + evsel->fd = xyarray__new(ncpus, nthreads, sizeof(int)); if (evsel->fd) { @@ -713,6 +717,9 @@ static int perf_evsel__run_ioctl(struct perf_evsel *evsel, int ncpus, int nthrea { int cpu, thread; + if (evsel->system_wide) + nthreads = 1; + for (cpu = 0; cpu < ncpus; cpu++) { for (thread = 0; thread < nthreads; thread++) { int fd = FD(evsel, cpu, thread), @@ -743,6 +750,9 @@ int perf_evsel__enable(struct perf_evsel *evsel, int ncpus, int nthreads) int perf_evsel__alloc_id(struct perf_evsel *evsel, int ncpus, int nthreads) { + if (evsel->system_wide) + nthreads = 1; + evsel->sample_id = xyarray__new(ncpus, nthreads, sizeof(struct perf_sample_id)); if (evsel->sample_id == NULL) return -ENOMEM; @@ -787,6 +797,9 @@ void perf_evsel__close_fd(struct perf_evsel *evsel, int ncpus, int nthreads) { int cpu, thread; + if (evsel->system_wide) + nthreads = 1; + for (cpu = 0; cpu < ncpus; cpu++) for (thread = 0; thread < nthreads; ++thread) { close(FD(evsel, cpu, thread)); @@ -875,6 +888,9 @@ int __perf_evsel__read(struct perf_evsel *evsel, int cpu, thread; struct perf_counts_values *aggr = &evsel->counts->aggr, count; + if (evsel->system_wide) + nthreads = 1; + aggr->val = aggr->ena = aggr->run = 0; for (cpu = 0; cpu < ncpus; cpu++) { @@ -997,13 +1013,18 @@ static size_t perf_event_attr__fprintf(struct perf_event_attr *attr, FILE *fp) static int __perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus, struct thread_map *threads) { - int cpu, thread; + int cpu, thread, nthreads; unsigned long flags = PERF_FLAG_FD_CLOEXEC; int pid = -1, err; enum { NO_CHANGE, SET_TO_MAX, INCREASED_MAX } set_rlimit = NO_CHANGE; + if (evsel->system_wide) + nthreads = 1; + else + nthreads = threads->nr; + if (evsel->fd == NULL && - perf_evsel__alloc_fd(evsel, cpus->nr, threads->nr) < 0) + perf_evsel__alloc_fd(evsel, cpus->nr, nthreads) < 0) return -ENOMEM; if (evsel->cgrp) { @@ -1027,10 +1048,10 @@ retry_sample_id: for (cpu = 0; cpu < cpus->nr; cpu++) { - for (thread = 0; thread < threads->nr; thread++) { + for (thread = 0; thread < nthreads; thread++) { int group_fd; - if (!evsel->cgrp) + if (!evsel->cgrp && !evsel->system_wide) pid = threads->map[thread]; group_fd = get_group_fd(evsel, cpu, thread); @@ -1103,7 +1124,7 @@ out_close: close(FD(evsel, cpu, thread)); FD(evsel, cpu, thread) = -1; } - thread = threads->nr; + thread = nthreads; } while (--cpu >= 0); return err; } diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h index d7f93ce..dbb2a0d 100644 --- a/tools/perf/util/evsel.h +++ b/tools/perf/util/evsel.h @@ -85,6 +85,7 @@ struct perf_evsel { bool needs_swap; bool no_aux_samples; bool immediate; + bool system_wide; /* parse modifier helper */ int exclude_GH; int nr_members; -- cgit v1.1 From 60b0896cc35243f515eda2085f9897e296177e45 Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Thu, 31 Jul 2014 09:00:52 +0300 Subject: perf evlist: Add perf_evlist__set_tracking_event() Add a function to change which event is used to track mmap, comm and task events. This is needed with Instruction Tracing because the Instruction Tracing event must come first but cannot be used for tracking because it will be disabled under some circumstances. Signed-off-by: Adrian Hunter Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1406786474-9306-10-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/evlist.c | 17 +++++++++++++++++ tools/perf/util/evlist.h | 3 +++ tools/perf/util/evsel.c | 3 ++- tools/perf/util/evsel.h | 1 + tools/perf/util/record.c | 2 +- 5 files changed, 24 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index c74d8ec..9d863db 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -122,6 +122,7 @@ void perf_evlist__add(struct perf_evlist *evlist, struct perf_evsel *entry) { list_add_tail(&entry->node, &evlist->entries); entry->idx = evlist->nr_entries; + entry->tracking = !entry->idx; if (!evlist->nr_entries++) perf_evlist__set_id_pos(evlist); @@ -1295,3 +1296,19 @@ void perf_evlist__to_front(struct perf_evlist *evlist, list_splice(&move, &evlist->entries); } + +void perf_evlist__set_tracking_event(struct perf_evlist *evlist, + struct perf_evsel *tracking_evsel) +{ + struct perf_evsel *evsel; + + if (tracking_evsel->tracking) + return; + + evlist__for_each(evlist, evsel) { + if (evsel != tracking_evsel) + evsel->tracking = false; + } + + tracking_evsel->tracking = true; +} diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h index f5173cd..e0084f9 100644 --- a/tools/perf/util/evlist.h +++ b/tools/perf/util/evlist.h @@ -262,4 +262,7 @@ void perf_evlist__to_front(struct perf_evlist *evlist, #define evlist__for_each_safe(evlist, tmp, evsel) \ __evlist__for_each_safe(&(evlist)->entries, tmp, evsel) +void perf_evlist__set_tracking_event(struct perf_evlist *evlist, + struct perf_evsel *tracking_evsel); + #endif /* __PERF_EVLIST_H */ diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index 66de9a7..01ce14c 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -162,6 +162,7 @@ void perf_evsel__init(struct perf_evsel *evsel, struct perf_event_attr *attr, int idx) { evsel->idx = idx; + evsel->tracking = !idx; evsel->attr = *attr; evsel->leader = evsel; evsel->unit = ""; @@ -561,7 +562,7 @@ void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts) { struct perf_evsel *leader = evsel->leader; struct perf_event_attr *attr = &evsel->attr; - int track = !evsel->idx; /* only the first counter needs these */ + int track = evsel->tracking; bool per_cpu = opts->target.default_per_cpu && !opts->target.per_thread; attr->sample_id_all = perf_missing_features.sample_id_all ? 0 : 1; diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h index dbb2a0d..7bc314b 100644 --- a/tools/perf/util/evsel.h +++ b/tools/perf/util/evsel.h @@ -86,6 +86,7 @@ struct perf_evsel { bool no_aux_samples; bool immediate; bool system_wide; + bool tracking; /* parse modifier helper */ int exclude_GH; int nr_members; diff --git a/tools/perf/util/record.c b/tools/perf/util/record.c index e778afd..cf69325 100644 --- a/tools/perf/util/record.c +++ b/tools/perf/util/record.c @@ -115,7 +115,7 @@ void perf_evlist__config(struct perf_evlist *evlist, struct record_opts *opts) evlist__for_each(evlist, evsel) { perf_evsel__config(evsel, opts); - if (!evsel->idx && use_comm_exec) + if (evsel->tracking && use_comm_exec) evsel->attr.comm_exec = 1; } -- cgit v1.1 From 5a52f33adf02a3e5eafdc1e597a3fe172e620bec Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Thu, 31 Jul 2014 09:00:57 +0300 Subject: perf session: Add perf_session__peek_event() Add a function to peek at other events in the event stream. Signed-off-by: Adrian Hunter Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1406786474-9306-15-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/session.c | 55 +++++++++++++++++++++++++++++++++++++++++++++++ tools/perf/util/session.h | 5 +++++ 2 files changed, 60 insertions(+) (limited to 'tools') diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index 7e27f1e..1b383bd 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -897,6 +897,61 @@ static void event_swap(union perf_event *event, bool sample_id_all) swap(event, sample_id_all); } +int perf_session__peek_event(struct perf_session *session, off_t file_offset, + void *buf, size_t buf_sz, + union perf_event **event_ptr, + struct perf_sample *sample) +{ + union perf_event *event; + size_t hdr_sz, rest; + int fd; + + if (session->one_mmap && !session->header.needs_swap) { + event = file_offset - session->one_mmap_offset + + session->one_mmap_addr; + goto out_parse_sample; + } + + if (perf_data_file__is_pipe(session->file)) + return -1; + + fd = perf_data_file__fd(session->file); + hdr_sz = sizeof(struct perf_event_header); + + if (buf_sz < hdr_sz) + return -1; + + if (lseek(fd, file_offset, SEEK_SET) == (off_t)-1 || + readn(fd, &buf, hdr_sz) != (ssize_t)hdr_sz) + return -1; + + event = (union perf_event *)buf; + + if (session->header.needs_swap) + perf_event_header__bswap(&event->header); + + if (event->header.size < hdr_sz) + return -1; + + rest = event->header.size - hdr_sz; + + if (readn(fd, &buf, rest) != (ssize_t)rest) + return -1; + + if (session->header.needs_swap) + event_swap(event, perf_evlist__sample_id_all(session->evlist)); + +out_parse_sample: + + if (sample && event->header.type < PERF_RECORD_USER_TYPE_START && + perf_evlist__parse_sample(session->evlist, event, sample)) + return -1; + + *event_ptr = event; + + return 0; +} + static s64 perf_session__process_event(struct perf_session *session, union perf_event *event, struct perf_tool *tool, diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h index 0630e65..8dd41ca 100644 --- a/tools/perf/util/session.h +++ b/tools/perf/util/session.h @@ -45,6 +45,11 @@ void perf_session__delete(struct perf_session *session); void perf_event_header__bswap(struct perf_event_header *hdr); +int perf_session__peek_event(struct perf_session *session, off_t file_offset, + void *buf, size_t buf_sz, + union perf_event **event_ptr, + struct perf_sample *sample); + int __perf_session__process_events(struct perf_session *session, u64 data_offset, u64 data_size, u64 size, struct perf_tool *tool); -- cgit v1.1 From 98526ee7229be8537373aebe037b74cac112d84b Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Thu, 31 Jul 2014 09:00:59 +0300 Subject: perf script: Allow callchains if any event samples them perf script was not displaying callchains if any selected event did not have PERF_SAMPLE_CALLCHAIN. Change this to disable callchains only if all selected events do not have PERF_SAMPLE_CALLCHAIN. Signed-off-by: Adrian Hunter Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1406786474-9306-17-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-script.c | 17 +++++++++++++---- 1 file changed, 13 insertions(+), 4 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c index 37d2b60..c1b7029 100644 --- a/tools/perf/builtin-script.c +++ b/tools/perf/builtin-script.c @@ -184,10 +184,6 @@ static int perf_evsel__check_attr(struct perf_evsel *evsel, if (perf_evsel__check_stype(evsel, PERF_SAMPLE_IP, "IP", PERF_OUTPUT_IP)) return -EINVAL; - - if (!no_callchain && - !(attr->sample_type & PERF_SAMPLE_CALLCHAIN)) - symbol_conf.use_callchain = false; } if (PRINT_FIELD(ADDR) && @@ -290,6 +286,19 @@ static int perf_session__check_output_opt(struct perf_session *session) set_print_ip_opts(&evsel->attr); } + if (!no_callchain) { + bool use_callchain = false; + + evlist__for_each(session->evlist, evsel) { + if (evsel->attr.sample_type & PERF_SAMPLE_CALLCHAIN) { + use_callchain = true; + break; + } + } + if (!use_callchain) + symbol_conf.use_callchain = false; + } + /* * set default for tracepoints to print symbols only * if callchains are present -- cgit v1.1 From a5563edfa1bd25d052d81f5ad7fe74ba71c3d44e Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Thu, 31 Jul 2014 09:01:01 +0300 Subject: perf script python: Add helpers for calling Python objects The Python script API repeatedly uses the same lines of code to get and call objects. Make that into helper functions instead. A side-effect is that some reference counting bugs disappear because the new call_object() function always decrements the reference count of 'retval'. Signed-off-by: Adrian Hunter Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1406786474-9306-19-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo --- .../util/scripting-engines/trace-event-python.c | 114 +++++++++------------ 1 file changed, 47 insertions(+), 67 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/scripting-engines/trace-event-python.c b/tools/perf/util/scripting-engines/trace-event-python.c index cbce254..26e5f142 100644 --- a/tools/perf/util/scripting-engines/trace-event-python.c +++ b/tools/perf/util/scripting-engines/trace-event-python.c @@ -73,6 +73,35 @@ static void pydict_set_item_string_decref(PyObject *dict, const char *key, PyObj Py_DECREF(val); } +static PyObject *get_handler(const char *handler_name) +{ + PyObject *handler; + + handler = PyDict_GetItemString(main_dict, handler_name); + if (handler && !PyCallable_Check(handler)) + return NULL; + return handler; +} + +static void call_object(PyObject *handler, PyObject *args, const char *die_msg) +{ + PyObject *retval; + + retval = PyObject_CallObject(handler, args); + if (retval == NULL) + handler_call_die(die_msg); + Py_DECREF(retval); +} + +static void try_call_object(const char *handler_name, PyObject *args) +{ + PyObject *handler; + + handler = get_handler(handler_name); + if (handler) + call_object(handler, args, handler_name); +} + static void define_value(enum print_arg_type field_type, const char *ev_name, const char *field_name, @@ -80,7 +109,7 @@ static void define_value(enum print_arg_type field_type, const char *field_str) { const char *handler_name = "define_flag_value"; - PyObject *handler, *t, *retval; + PyObject *t; unsigned long long value; unsigned n = 0; @@ -98,13 +127,7 @@ static void define_value(enum print_arg_type field_type, PyTuple_SetItem(t, n++, PyInt_FromLong(value)); PyTuple_SetItem(t, n++, PyString_FromString(field_str)); - handler = PyDict_GetItemString(main_dict, handler_name); - if (handler && PyCallable_Check(handler)) { - retval = PyObject_CallObject(handler, t); - if (retval == NULL) - handler_call_die(handler_name); - Py_DECREF(retval); - } + try_call_object(handler_name, t); Py_DECREF(t); } @@ -127,7 +150,7 @@ static void define_field(enum print_arg_type field_type, const char *delim) { const char *handler_name = "define_flag_field"; - PyObject *handler, *t, *retval; + PyObject *t; unsigned n = 0; if (field_type == PRINT_SYMBOL) @@ -145,13 +168,7 @@ static void define_field(enum print_arg_type field_type, if (field_type == PRINT_FLAGS) PyTuple_SetItem(t, n++, PyString_FromString(delim)); - handler = PyDict_GetItemString(main_dict, handler_name); - if (handler && PyCallable_Check(handler)) { - retval = PyObject_CallObject(handler, t); - if (retval == NULL) - handler_call_die(handler_name); - Py_DECREF(retval); - } + try_call_object(handler_name, t); Py_DECREF(t); } @@ -362,7 +379,7 @@ static void python_process_tracepoint(struct perf_sample *sample, struct thread *thread, struct addr_location *al) { - PyObject *handler, *retval, *context, *t, *obj, *callchain; + PyObject *handler, *context, *t, *obj, *callchain; PyObject *dict = NULL; static char handler_name[256]; struct format_field *field; @@ -387,9 +404,7 @@ static void python_process_tracepoint(struct perf_sample *sample, sprintf(handler_name, "%s__%s", event->system, event->name); - handler = PyDict_GetItemString(main_dict, handler_name); - if (handler && !PyCallable_Check(handler)) - handler = NULL; + handler = get_handler(handler_name); if (!handler) { dict = PyDict_New(); if (!dict) @@ -450,19 +465,9 @@ static void python_process_tracepoint(struct perf_sample *sample, Py_FatalError("error resizing Python tuple"); if (handler) { - retval = PyObject_CallObject(handler, t); - if (retval == NULL) - handler_call_die(handler_name); - Py_DECREF(retval); + call_object(handler, t, handler_name); } else { - handler = PyDict_GetItemString(main_dict, "trace_unhandled"); - if (handler && PyCallable_Check(handler)) { - - retval = PyObject_CallObject(handler, t); - if (retval == NULL) - handler_call_die("trace_unhandled"); - Py_DECREF(retval); - } + try_call_object("trace_unhandled", t); Py_DECREF(dict); } @@ -474,7 +479,7 @@ static void python_process_general_event(struct perf_sample *sample, struct thread *thread, struct addr_location *al) { - PyObject *handler, *retval, *t, *dict, *callchain, *dict_sample; + PyObject *handler, *t, *dict, *callchain, *dict_sample; static char handler_name[64]; unsigned n = 0; @@ -496,8 +501,8 @@ static void python_process_general_event(struct perf_sample *sample, snprintf(handler_name, sizeof(handler_name), "%s", "process_event"); - handler = PyDict_GetItemString(main_dict, handler_name); - if (!handler || !PyCallable_Check(handler)) + handler = get_handler(handler_name); + if (!handler) goto exit; pydict_set_item_string_decref(dict, "ev_name", PyString_FromString(perf_evsel__name(evsel))); @@ -539,10 +544,7 @@ static void python_process_general_event(struct perf_sample *sample, if (_PyTuple_Resize(&t, n) == -1) Py_FatalError("error resizing Python tuple"); - retval = PyObject_CallObject(handler, t); - if (retval == NULL) - handler_call_die(handler_name); - Py_DECREF(retval); + call_object(handler, t, handler_name); exit: Py_DECREF(dict); Py_DECREF(t); @@ -566,36 +568,24 @@ static void python_process_event(union perf_event *event __maybe_unused, static int run_start_sub(void) { - PyObject *handler, *retval; - int err = 0; - main_module = PyImport_AddModule("__main__"); if (main_module == NULL) return -1; Py_INCREF(main_module); main_dict = PyModule_GetDict(main_module); - if (main_dict == NULL) { - err = -1; + if (main_dict == NULL) goto error; - } Py_INCREF(main_dict); - handler = PyDict_GetItemString(main_dict, "trace_begin"); - if (handler == NULL || !PyCallable_Check(handler)) - goto out; + try_call_object("trace_begin", NULL); - retval = PyObject_CallObject(handler, NULL); - if (retval == NULL) - handler_call_die("trace_begin"); + return 0; - Py_DECREF(retval); - return err; error: Py_XDECREF(main_dict); Py_XDECREF(main_module); -out: - return err; + return -1; } /* @@ -654,23 +644,13 @@ error: */ static int python_stop_script(void) { - PyObject *handler, *retval; - int err = 0; + try_call_object("trace_end", NULL); - handler = PyDict_GetItemString(main_dict, "trace_end"); - if (handler == NULL || !PyCallable_Check(handler)) - goto out; - - retval = PyObject_CallObject(handler, NULL); - if (retval == NULL) - handler_call_die("trace_end"); - Py_DECREF(retval); -out: Py_XDECREF(main_dict); Py_XDECREF(main_module); Py_Finalize(); - return err; + return 0; } static int python_generate_script(struct pevent *pevent, const char *outfile) -- cgit v1.1 From 65de51f93ebf9305ec011da59c0b5fe29429d1b9 Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Thu, 31 Jul 2014 09:00:44 +0300 Subject: perf tools: Identify which comms are from exec For grouping together all the data from a single execution, which is needed for pairing calls and returns e.g. any outstanding calls when a process exec's will never return. Signed-off-by: Adrian Hunter Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1406786474-9306-2-git-send-email-adrian.hunter@intel.com [ Remove testing if comm->exec is false before setting it to true ] Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/comm.c | 7 +++++-- tools/perf/util/comm.h | 6 ++++-- tools/perf/util/machine.c | 4 +++- tools/perf/util/thread.c | 24 +++++++++++++++++++----- tools/perf/util/thread.h | 10 +++++++++- 5 files changed, 40 insertions(+), 11 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/comm.c b/tools/perf/util/comm.c index f9e7776..b2bb59d 100644 --- a/tools/perf/util/comm.c +++ b/tools/perf/util/comm.c @@ -74,7 +74,7 @@ static struct comm_str *comm_str__findnew(const char *str, struct rb_root *root) return new; } -struct comm *comm__new(const char *str, u64 timestamp) +struct comm *comm__new(const char *str, u64 timestamp, bool exec) { struct comm *comm = zalloc(sizeof(*comm)); @@ -82,6 +82,7 @@ struct comm *comm__new(const char *str, u64 timestamp) return NULL; comm->start = timestamp; + comm->exec = exec; comm->comm_str = comm_str__findnew(str, &comm_str_root); if (!comm->comm_str) { @@ -94,7 +95,7 @@ struct comm *comm__new(const char *str, u64 timestamp) return comm; } -int comm__override(struct comm *comm, const char *str, u64 timestamp) +int comm__override(struct comm *comm, const char *str, u64 timestamp, bool exec) { struct comm_str *new, *old = comm->comm_str; @@ -106,6 +107,8 @@ int comm__override(struct comm *comm, const char *str, u64 timestamp) comm_str__put(old); comm->comm_str = new; comm->start = timestamp; + if (exec) + comm->exec = true; return 0; } diff --git a/tools/perf/util/comm.h b/tools/perf/util/comm.h index fac5bd5..51c10ab 100644 --- a/tools/perf/util/comm.h +++ b/tools/perf/util/comm.h @@ -11,11 +11,13 @@ struct comm { struct comm_str *comm_str; u64 start; struct list_head list; + bool exec; }; void comm__free(struct comm *comm); -struct comm *comm__new(const char *str, u64 timestamp); +struct comm *comm__new(const char *str, u64 timestamp, bool exec); const char *comm__str(const struct comm *comm); -int comm__override(struct comm *comm, const char *str, u64 timestamp); +int comm__override(struct comm *comm, const char *str, u64 timestamp, + bool exec); #endif /* __PERF_COMM_H */ diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c index 16bba9f..ea3e09f 100644 --- a/tools/perf/util/machine.c +++ b/tools/perf/util/machine.c @@ -404,11 +404,13 @@ int machine__process_comm_event(struct machine *machine, union perf_event *event struct thread *thread = machine__findnew_thread(machine, event->comm.pid, event->comm.tid); + bool exec = event->header.misc & PERF_RECORD_MISC_COMM_EXEC; if (dump_trace) perf_event__fprintf_comm(event, stdout); - if (thread == NULL || thread__set_comm(thread, event->comm.comm, sample->time)) { + if (thread == NULL || + __thread__set_comm(thread, event->comm.comm, sample->time, exec)) { dump_printf("problem processing PERF_RECORD_COMM, skipping event.\n"); return -1; } diff --git a/tools/perf/util/thread.c b/tools/perf/util/thread.c index 12c7a25..a9df7f2 100644 --- a/tools/perf/util/thread.c +++ b/tools/perf/util/thread.c @@ -42,7 +42,7 @@ struct thread *thread__new(pid_t pid, pid_t tid) goto err_thread; snprintf(comm_str, 32, ":%d", tid); - comm = comm__new(comm_str, 0); + comm = comm__new(comm_str, 0, false); free(comm_str); if (!comm) goto err_thread; @@ -81,19 +81,33 @@ struct comm *thread__comm(const struct thread *thread) return list_first_entry(&thread->comm_list, struct comm, list); } +struct comm *thread__exec_comm(const struct thread *thread) +{ + struct comm *comm, *last = NULL; + + list_for_each_entry(comm, &thread->comm_list, list) { + if (comm->exec) + return comm; + last = comm; + } + + return last; +} + /* CHECKME: time should always be 0 if event aren't ordered */ -int thread__set_comm(struct thread *thread, const char *str, u64 timestamp) +int __thread__set_comm(struct thread *thread, const char *str, u64 timestamp, + bool exec) { struct comm *new, *curr = thread__comm(thread); int err; /* Override latest entry if it had no specific time coverage */ - if (!curr->start) { - err = comm__override(curr, str, timestamp); + if (!curr->start && !curr->exec) { + err = comm__override(curr, str, timestamp, exec); if (err) return err; } else { - new = comm__new(str, timestamp); + new = comm__new(str, timestamp, exec); if (!new) return -ENOMEM; list_add(&new->list, &thread->comm_list); diff --git a/tools/perf/util/thread.h b/tools/perf/util/thread.h index 716b772..8c75fa7 100644 --- a/tools/perf/util/thread.h +++ b/tools/perf/util/thread.h @@ -38,9 +38,17 @@ static inline void thread__exited(struct thread *thread) thread->dead = true; } -int thread__set_comm(struct thread *thread, const char *comm, u64 timestamp); +int __thread__set_comm(struct thread *thread, const char *comm, u64 timestamp, + bool exec); +static inline int thread__set_comm(struct thread *thread, const char *comm, + u64 timestamp) +{ + return __thread__set_comm(thread, comm, timestamp, false); +} + int thread__comm_len(struct thread *thread); struct comm *thread__comm(const struct thread *thread); +struct comm *thread__exec_comm(const struct thread *thread); const char *thread__comm_str(const struct thread *thread); void thread__insert_map(struct thread *thread, struct map *map); int thread__fork(struct thread *thread, struct thread *parent, u64 timestamp); -- cgit v1.1 From cfe1c41405fe9a559f8b3c24c904b2bb42d4a6e8 Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Thu, 31 Jul 2014 09:00:45 +0300 Subject: perf machine: Add machine__thread_exec_comm() Add machine__thread_exec_comm() to return the comm that matches the last exec, if the comm_exec flag is present, or the last comm otherwise. Signed-off-by: Adrian Hunter Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1406786474-9306-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/machine.c | 26 ++++++++++++++++++++++++++ tools/perf/util/machine.h | 4 ++++ tools/perf/util/session.c | 24 +++++++++++++++++++++++- 3 files changed, 53 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c index ea3e09f..b093b93 100644 --- a/tools/perf/util/machine.c +++ b/tools/perf/util/machine.c @@ -31,6 +31,7 @@ int machine__init(struct machine *machine, const char *root_dir, pid_t pid) machine->symbol_filter = NULL; machine->id_hdr_size = 0; + machine->comm_exec = false; machine->root_dir = strdup(root_dir); if (machine->root_dir == NULL) @@ -179,6 +180,19 @@ void machines__set_symbol_filter(struct machines *machines, } } +void machines__set_comm_exec(struct machines *machines, bool comm_exec) +{ + struct rb_node *nd; + + machines->host.comm_exec = comm_exec; + + for (nd = rb_first(&machines->guests); nd; nd = rb_next(nd)) { + struct machine *machine = rb_entry(nd, struct machine, rb_node); + + machine->comm_exec = comm_exec; + } +} + struct machine *machines__find(struct machines *machines, pid_t pid) { struct rb_node **p = &machines->guests.rb_node; @@ -398,6 +412,15 @@ struct thread *machine__find_thread(struct machine *machine, pid_t pid, return __machine__findnew_thread(machine, pid, tid, false); } +struct comm *machine__thread_exec_comm(struct machine *machine, + struct thread *thread) +{ + if (machine->comm_exec) + return thread__exec_comm(thread); + else + return thread__comm(thread); +} + int machine__process_comm_event(struct machine *machine, union perf_event *event, struct perf_sample *sample) { @@ -406,6 +429,9 @@ int machine__process_comm_event(struct machine *machine, union perf_event *event event->comm.tid); bool exec = event->header.misc & PERF_RECORD_MISC_COMM_EXEC; + if (exec) + machine->comm_exec = true; + if (dump_trace) perf_event__fprintf_comm(event, stdout); diff --git a/tools/perf/util/machine.h b/tools/perf/util/machine.h index b972824..61216e0 100644 --- a/tools/perf/util/machine.h +++ b/tools/perf/util/machine.h @@ -26,6 +26,7 @@ struct machine { struct rb_node rb_node; pid_t pid; u16 id_hdr_size; + bool comm_exec; char *root_dir; struct rb_root threads; struct list_head dead_threads; @@ -47,6 +48,8 @@ struct map *machine__kernel_map(struct machine *machine, enum map_type type) struct thread *machine__find_thread(struct machine *machine, pid_t pid, pid_t tid); +struct comm *machine__thread_exec_comm(struct machine *machine, + struct thread *thread); int machine__process_comm_event(struct machine *machine, union perf_event *event, struct perf_sample *sample); @@ -88,6 +91,7 @@ char *machine__mmap_name(struct machine *machine, char *bf, size_t size); void machines__set_symbol_filter(struct machines *machines, symbol_filter_t symbol_filter); +void machines__set_comm_exec(struct machines *machines, bool comm_exec); struct machine *machine__new_host(void); int machine__init(struct machine *machine, const char *root_dir, pid_t pid); diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index 1b383bd..6d2d50d 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -67,6 +67,25 @@ static void perf_session__destroy_kernel_maps(struct perf_session *session) machines__destroy_kernel_maps(&session->machines); } +static bool perf_session__has_comm_exec(struct perf_session *session) +{ + struct perf_evsel *evsel; + + evlist__for_each(session->evlist, evsel) { + if (evsel->attr.comm_exec) + return true; + } + + return false; +} + +static void perf_session__set_comm_exec(struct perf_session *session) +{ + bool comm_exec = perf_session__has_comm_exec(session); + + machines__set_comm_exec(&session->machines, comm_exec); +} + struct perf_session *perf_session__new(struct perf_data_file *file, bool repipe, struct perf_tool *tool) { @@ -90,6 +109,7 @@ struct perf_session *perf_session__new(struct perf_data_file *file, goto out_close; perf_session__set_id_hdr_size(session); + perf_session__set_comm_exec(session); } } @@ -866,8 +886,10 @@ static s64 perf_session__process_user_event(struct perf_session *session, switch (event->header.type) { case PERF_RECORD_HEADER_ATTR: err = tool->attr(tool, event, &session->evlist); - if (err == 0) + if (err == 0) { perf_session__set_id_hdr_size(session); + perf_session__set_comm_exec(session); + } return err; case PERF_RECORD_HEADER_EVENT_TYPE: /* -- cgit v1.1 From bf4939027decde7aaaf8b5dbeee70126d2822eb6 Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Thu, 31 Jul 2014 09:01:04 +0300 Subject: perf tools: Add flags and insn_len to struct sample The flags will be used to export branch type and transaction status. insn_len is preparation for pairing calls and returns because the return address equals the call address plus the instruction length (insn_len). Signed-off-by: Adrian Hunter Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1406786474-9306-22-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/event.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'tools') diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h index 94d6976..7eb7107 100644 --- a/tools/perf/util/event.h +++ b/tools/perf/util/event.h @@ -156,6 +156,8 @@ struct perf_sample { u32 cpu; u32 raw_size; u64 data_src; + u32 flags; + u16 insn_len; void *raw_data; struct ip_callchain *callchain; struct branch_stack *branch_stack; -- cgit v1.1 From 1c65056c547141a0cb52fb8e6056f63524d2bbf2 Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Thu, 31 Jul 2014 09:00:56 +0300 Subject: perf evlist: Add perf_evlist__enable_event_idx() Add a function to enable a specific event within a specific perf event buffer. Signed-off-by: Adrian Hunter Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1406786474-9306-14-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/evlist.c | 47 +++++++++++++++++++++++++++++++++++++++++++++++ tools/perf/util/evlist.h | 2 ++ 2 files changed, 49 insertions(+) (limited to 'tools') diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index 9d863db..5dcd28c 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -355,6 +355,53 @@ int perf_evlist__enable_event(struct perf_evlist *evlist, return 0; } +static int perf_evlist__enable_event_cpu(struct perf_evlist *evlist, + struct perf_evsel *evsel, int cpu) +{ + int thread, err; + int nr_threads = perf_evlist__nr_threads(evlist, evsel); + + if (!evsel->fd) + return -EINVAL; + + for (thread = 0; thread < nr_threads; thread++) { + err = ioctl(FD(evsel, cpu, thread), + PERF_EVENT_IOC_ENABLE, 0); + if (err) + return err; + } + return 0; +} + +static int perf_evlist__enable_event_thread(struct perf_evlist *evlist, + struct perf_evsel *evsel, + int thread) +{ + int cpu, err; + int nr_cpus = cpu_map__nr(evlist->cpus); + + if (!evsel->fd) + return -EINVAL; + + for (cpu = 0; cpu < nr_cpus; cpu++) { + err = ioctl(FD(evsel, cpu, thread), PERF_EVENT_IOC_ENABLE, 0); + if (err) + return err; + } + return 0; +} + +int perf_evlist__enable_event_idx(struct perf_evlist *evlist, + struct perf_evsel *evsel, int idx) +{ + bool per_cpu_mmaps = !cpu_map__empty(evlist->cpus); + + if (per_cpu_mmaps) + return perf_evlist__enable_event_cpu(evlist, evsel, idx); + else + return perf_evlist__enable_event_thread(evlist, evsel, idx); +} + static int perf_evlist__alloc_pollfd(struct perf_evlist *evlist) { int nr_cpus = cpu_map__nr(evlist->cpus); diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h index e0084f9..106de53 100644 --- a/tools/perf/util/evlist.h +++ b/tools/perf/util/evlist.h @@ -122,6 +122,8 @@ int perf_evlist__disable_event(struct perf_evlist *evlist, struct perf_evsel *evsel); int perf_evlist__enable_event(struct perf_evlist *evlist, struct perf_evsel *evsel); +int perf_evlist__enable_event_idx(struct perf_evlist *evlist, + struct perf_evsel *evsel, int idx); void perf_evlist__set_selected(struct perf_evlist *evlist, struct perf_evsel *evsel); -- cgit v1.1 From 92561cb7883194714475c7a7775a11a9c40f75cb Mon Sep 17 00:00:00 2001 From: Masami Hiramatsu Date: Fri, 15 Aug 2014 01:44:32 +0000 Subject: perf probe: Warn user to rebuild target with debuginfo Warn user to rebuild target with debuginfo when the perf probe fails to find debug information in the target binary. Without this, perf probe just reports the failure, but it's no hint for users. This gives more hint for users. Without this: $ strip perf $ ./perf probe -x perf -L argv_split Failed to open debuginfo file. Error: Failed to show lines. With this: $ strip perf $ ./perf probe -x perf -L argv_split The /home/fedora/ksrc/linux-3/tools/perf/perf file has no debug information. Rebuild with -g, or install an appropriate debuginfo package. Error: Failed to show lines. The "rebuild with ..." part changes to "rebuild with CONFIG_DEBUG_INFO" if the target is the kernel or a kernel module. Suggested-by: Arnaldo Carvalho de Melo Signed-off-by: Masami Hiramatsu Cc: Brendan Gregg Cc: David Ahern Cc: Jiri Olsa Cc: Namhyung Kim Cc: yrl.pp-manager.tt@hitachi.com Link: http://lkml.kernel.org/r/20140815014432.29869.57941.stgit@kbuild-fedora.novalocal Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/probe-event.c | 41 +++++++++++++++++++++++------------------ 1 file changed, 23 insertions(+), 18 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c index 784ea42..ac15ff7 100644 --- a/tools/perf/util/probe-event.c +++ b/tools/perf/util/probe-event.c @@ -258,21 +258,33 @@ static void clear_probe_trace_events(struct probe_trace_event *tevs, int ntevs) #ifdef HAVE_DWARF_SUPPORT /* Open new debuginfo of given module */ -static struct debuginfo *open_debuginfo(const char *module) +static struct debuginfo *open_debuginfo(const char *module, bool silent) { const char *path = module; + struct debuginfo *ret; if (!module || !strchr(module, '/')) { path = kernel_get_module_path(module); if (!path) { - pr_err("Failed to find path of %s module.\n", - module ?: "kernel"); + if (!silent) + pr_err("Failed to find path of %s module.\n", + module ?: "kernel"); return NULL; } } - return debuginfo__new(path); + ret = debuginfo__new(path); + if (!ret && !silent) { + pr_warning("The %s file has no debug information.\n", path); + if (!module || !strtailcmp(path, ".ko")) + pr_warning("Rebuild with CONFIG_DEBUG_INFO=y, "); + else + pr_warning("Rebuild with -g, "); + pr_warning("or install an appropriate debuginfo package.\n"); + } + return ret; } + static int get_text_start_address(const char *exec, unsigned long *address) { Elf *elf; @@ -333,15 +345,13 @@ static int find_perf_probe_point_from_dwarf(struct probe_trace_point *tp, pr_debug("try to find information at %" PRIx64 " in %s\n", addr, tp->module ? : "kernel"); - dinfo = open_debuginfo(tp->module); + dinfo = open_debuginfo(tp->module, verbose == 0); if (dinfo) { ret = debuginfo__find_probe_point(dinfo, (unsigned long)addr, pp); debuginfo__delete(dinfo); - } else { - pr_debug("Failed to open debuginfo at 0x%" PRIx64 "\n", addr); + } else ret = -ENOENT; - } if (ret > 0) { pp->retprobe = tp->retprobe; @@ -457,13 +467,11 @@ static int try_to_find_probe_trace_events(struct perf_probe_event *pev, struct debuginfo *dinfo; int ntevs, ret = 0; - dinfo = open_debuginfo(target); + dinfo = open_debuginfo(target, !need_dwarf); if (!dinfo) { - if (need_dwarf) { - pr_warning("Failed to open debuginfo file.\n"); + if (need_dwarf) return -ENOENT; - } pr_debug("Could not open debuginfo. Try to use symbols.\n"); return 0; } @@ -620,11 +628,9 @@ static int __show_line_range(struct line_range *lr, const char *module) char *tmp; /* Search a line range */ - dinfo = open_debuginfo(module); - if (!dinfo) { - pr_warning("Failed to open debuginfo file.\n"); + dinfo = open_debuginfo(module, false); + if (!dinfo) return -ENOENT; - } ret = debuginfo__find_line_range(dinfo, lr); debuginfo__delete(dinfo); @@ -772,9 +778,8 @@ int show_available_vars(struct perf_probe_event *pevs, int npevs, if (ret < 0) return ret; - dinfo = open_debuginfo(module); + dinfo = open_debuginfo(module, false); if (!dinfo) { - pr_warning("Failed to open debuginfo file.\n"); ret = -ENOENT; goto out; } -- cgit v1.1 From 1e2bb043f171084e5f34816a4268304512d35a46 Mon Sep 17 00:00:00 2001 From: Alex Converse Date: Thu, 14 Aug 2014 14:03:00 -0700 Subject: perf annotate: Don't truncate Intel style addresses Instructions like "mov r9,QWORD PTR [rdx+0x8]" were being truncated to "mov r9,QWORD" by code that assuemd operands cannot have spaces. Signed-off-by: Alex Converse Cc: Adrian Hunter Cc: Andi Kleen Cc: Ingo Molnar Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1408050180-14088-1-git-send-email-aconverse@google.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/annotate.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c index 7745fec..3643752 100644 --- a/tools/perf/util/annotate.c +++ b/tools/perf/util/annotate.c @@ -232,9 +232,16 @@ static int mov__parse(struct ins_operands *ops) return -1; target = ++s; + comment = strchr(s, '#'); - while (s[0] != '\0' && !isspace(s[0])) - ++s; + if (comment != NULL) + s = comment - 1; + else + s = strchr(s, '\0') - 1; + + while (s > target && isspace(s[0])) + --s; + s++; prev = *s; *s = '\0'; @@ -244,7 +251,6 @@ static int mov__parse(struct ins_operands *ops) if (ops->target.raw == NULL) goto out_free_source; - comment = strchr(s, '#'); if (comment == NULL) return 0; -- cgit v1.1 From c4d2df495c5bf05661772abf9b88f2696fd810c4 Mon Sep 17 00:00:00 2001 From: Elliott Hughes Date: Thu, 14 Aug 2014 12:39:20 -0700 Subject: perf tools: Add arm64 triplets Adds the triplet used for arm64 by Android. Others will want to add their own later. Signed-off-by: Elliott Hughes Cc: Ingo Molnar Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20140814193920.A7D2D20572@enh.mtv.corp.google.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/arch/common.c | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'tools') diff --git a/tools/perf/arch/common.c b/tools/perf/arch/common.c index 42faf36..49776f1 100644 --- a/tools/perf/arch/common.c +++ b/tools/perf/arch/common.c @@ -12,6 +12,11 @@ const char *const arm_triplets[] = { NULL }; +const char *const arm64_triplets[] = { + "aarch64-linux-android-", + NULL +}; + const char *const powerpc_triplets[] = { "powerpc-unknown-linux-gnu-", "powerpc64-unknown-linux-gnu-", @@ -105,6 +110,8 @@ static const char *normalize_arch(char *arch) return "x86"; if (!strcmp(arch, "sun4u") || !strncmp(arch, "sparc", 5)) return "sparc"; + if (!strcmp(arch, "aarch64") || !strcmp(arch, "arm64")) + return "arm64"; if (!strncmp(arch, "arm", 3) || !strcmp(arch, "sa110")) return "arm"; if (!strncmp(arch, "s390", 4)) @@ -159,6 +166,8 @@ static int perf_session_env__lookup_binutils_path(struct perf_session_env *env, if (!strcmp(arch, "arm")) path_list = arm_triplets; + else if (!strcmp(arch, "arm64")) + path_list = arm64_triplets; else if (!strcmp(arch, "powerpc")) path_list = powerpc_triplets; else if (!strcmp(arch, "sh")) -- cgit v1.1 From 885b5930d6632fc7df55445d9021b87d8bb17a9b Mon Sep 17 00:00:00 2001 From: Cody P Schafer Date: Fri, 15 Aug 2014 00:26:14 -0700 Subject: perf tools: Annotate PMU related list_head members with type info So that we can more readily understand in which list heads structs are stored into. Signed-off-by: Cody P Schafer Cc: Andi Kleen Cc: Anshuman Khandual Cc: Cody P Schafer Cc: Haren Myneni Cc: Jiri Olsa Cc: Michael Ellerman Cc: Peter Zijlstra Cc: Stephane Eranian Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1408087583-32239-6-git-send-email-sukadev@linux.vnet.ibm.com Signed-off-by: Sukadev Bhattiprolu Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/pmu.c | 4 ++-- tools/perf/util/pmu.h | 6 +++--- 2 files changed, 5 insertions(+), 5 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c index 7a811eb..9bf5827 100644 --- a/tools/perf/util/pmu.c +++ b/tools/perf/util/pmu.c @@ -14,8 +14,8 @@ struct perf_pmu_alias { char *name; - struct list_head terms; - struct list_head list; + struct list_head terms; /* HEAD struct parse_events_term -> list */ + struct list_head list; /* ELEM */ char unit[UNIT_MAX_LEN+1]; double scale; }; diff --git a/tools/perf/util/pmu.h b/tools/perf/util/pmu.h index c14a543..1c1e2ee 100644 --- a/tools/perf/util/pmu.h +++ b/tools/perf/util/pmu.h @@ -17,9 +17,9 @@ struct perf_pmu { char *name; __u32 type; struct cpu_map *cpus; - struct list_head format; - struct list_head aliases; - struct list_head list; + struct list_head format; /* HEAD struct perf_pmu_format -> list */ + struct list_head aliases; /* HEAD struct perf_pmu_alias -> list */ + struct list_head list; /* ELEM */ }; struct perf_pmu *perf_pmu__find(const char *name); -- cgit v1.1 From e8232f1ad4682c34e7e774c212ccd0c15bb5aa26 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Thu, 14 Aug 2014 15:01:38 +0900 Subject: perf report: Relax -g option parsing not to limit the option order Current perf report -g/--call-graph option parser requires for option argument having following order: type,min_percent[,print_limit],order,key But sometimes it's annoying to type all even if one just wants to change the "order" or "key" setting. This patch fixes it to remove the ordering restriction so that one can use just "-g caller", for instance. The only remaining restriction is that the "print_limit" always comes after the "min_percent". Signed-off-by: Namhyung Kim Cc: Andi Kleen Cc: Arun Sharma Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Rodrigo Campos Link: http://lkml.kernel.org/r/1407996100-6359-2-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/callchain.c | 95 ++++++++++++++++++--------------------------- 1 file changed, 38 insertions(+), 57 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/callchain.c b/tools/perf/util/callchain.c index 437ee09..08f0fbf 100644 --- a/tools/perf/util/callchain.c +++ b/tools/perf/util/callchain.c @@ -28,74 +28,55 @@ __thread struct callchain_cursor callchain_cursor; int parse_callchain_report_opt(const char *arg) { - char *tok, *tok2; + char *tok; char *endptr; + bool minpcnt_set = false; symbol_conf.use_callchain = true; if (!arg) return 0; - tok = strtok((char *)arg, ","); - if (!tok) - return -1; - - /* get the output mode */ - if (!strncmp(tok, "graph", strlen(arg))) { - callchain_param.mode = CHAIN_GRAPH_ABS; - - } else if (!strncmp(tok, "flat", strlen(arg))) { - callchain_param.mode = CHAIN_FLAT; - } else if (!strncmp(tok, "fractal", strlen(arg))) { - callchain_param.mode = CHAIN_GRAPH_REL; - } else if (!strncmp(tok, "none", strlen(arg))) { - callchain_param.mode = CHAIN_NONE; - symbol_conf.use_callchain = false; - return 0; - } else { - return -1; - } - - /* get the min percentage */ - tok = strtok(NULL, ","); - if (!tok) - goto setup; - - callchain_param.min_percent = strtod(tok, &endptr); - if (tok == endptr) - return -1; + while ((tok = strtok((char *)arg, ",")) != NULL) { + if (!strncmp(tok, "none", strlen(tok))) { + callchain_param.mode = CHAIN_NONE; + symbol_conf.use_callchain = false; + return 0; + } - /* get the print limit */ - tok2 = strtok(NULL, ","); - if (!tok2) - goto setup; + /* try to get the output mode */ + if (!strncmp(tok, "graph", strlen(tok))) + callchain_param.mode = CHAIN_GRAPH_ABS; + else if (!strncmp(tok, "flat", strlen(tok))) + callchain_param.mode = CHAIN_FLAT; + else if (!strncmp(tok, "fractal", strlen(tok))) + callchain_param.mode = CHAIN_GRAPH_REL; + /* try to get the call chain order */ + else if (!strncmp(tok, "caller", strlen(tok))) + callchain_param.order = ORDER_CALLER; + else if (!strncmp(tok, "callee", strlen(tok))) + callchain_param.order = ORDER_CALLEE; + /* try to get the sort key */ + else if (!strncmp(tok, "function", strlen(tok))) + callchain_param.key = CCKEY_FUNCTION; + else if (!strncmp(tok, "address", strlen(tok))) + callchain_param.key = CCKEY_ADDRESS; + /* try to get the min percent */ + else if (!minpcnt_set) { + callchain_param.min_percent = strtod(tok, &endptr); + if (tok == endptr) + return -1; + minpcnt_set = true; + } else { + /* try print limit at last */ + callchain_param.print_limit = strtoul(tok, &endptr, 0); + if (tok == endptr) + return -1; + } - if (tok2[0] != 'c') { - callchain_param.print_limit = strtoul(tok2, &endptr, 0); - tok2 = strtok(NULL, ","); - if (!tok2) - goto setup; + arg = NULL; } - /* get the call chain order */ - if (!strncmp(tok2, "caller", strlen("caller"))) - callchain_param.order = ORDER_CALLER; - else if (!strncmp(tok2, "callee", strlen("callee"))) - callchain_param.order = ORDER_CALLEE; - else - return -1; - - /* Get the sort key */ - tok2 = strtok(NULL, ","); - if (!tok2) - goto setup; - if (!strncmp(tok2, "function", strlen("function"))) - callchain_param.key = CCKEY_FUNCTION; - else if (!strncmp(tok2, "address", strlen("address"))) - callchain_param.key = CCKEY_ADDRESS; - else - return -1; -setup: if (callchain_register_param(&callchain_param) < 0) { pr_err("Can't register callchain params\n"); return -1; -- cgit v1.1 From 6eb08660962a91212902869672dab5199827cbfd Mon Sep 17 00:00:00 2001 From: Masami Hiramatsu Date: Thu, 14 Aug 2014 02:22:30 +0000 Subject: perf probe: Don't use strerror if strlist__add failed Since the strlist__add doesn't involves any IO, the failure reason must be ENOMEM or EINVAL, moreover this is just a debug message, we don't need to show the error string. And also, if get_probe_trace_command_rawlist() returns NULL, it doesn't mean the rawlist is empty, there is an error. So caller must use -ENOMEM for the error. Signed-off-by: Masami Hiramatsu Cc: Ingo Molnar Cc: Namhyung Kim Cc: Naohiro Aota Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20140814022230.3545.99254.stgit@kbuild-fedora.novalocal Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/probe-event.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c index ac15ff7..bf39c23 100644 --- a/tools/perf/util/probe-event.c +++ b/tools/perf/util/probe-event.c @@ -1881,7 +1881,7 @@ static struct strlist *get_probe_trace_command_rawlist(int fd) p[idx] = '\0'; ret = strlist__add(sl, buf); if (ret < 0) { - pr_debug("strlist__add failed: %s\n", strerror(-ret)); + pr_debug("strlist__add failed (%d)\n", ret); strlist__delete(sl); return NULL; } @@ -1940,7 +1940,7 @@ static int __show_perf_probe_events(int fd, bool is_kprobe) rawlist = get_probe_trace_command_rawlist(fd); if (!rawlist) - return -ENOENT; + return -ENOMEM; strlist__for_each(ent, rawlist) { ret = parse_probe_trace_command(ent->s, &tev); @@ -2007,6 +2007,8 @@ static struct strlist *get_probe_trace_event_names(int fd, bool include_group) memset(&tev, 0, sizeof(tev)); rawlist = get_probe_trace_command_rawlist(fd); + if (!rawlist) + return NULL; sl = strlist__new(true, NULL); strlist__for_each(ent, rawlist) { ret = parse_probe_trace_command(ent->s, &tev); -- cgit v1.1 From b2348e1d8a67c58de44820587fabc4f987eafbb6 Mon Sep 17 00:00:00 2001 From: Masami Hiramatsu Date: Thu, 14 Aug 2014 02:22:32 +0000 Subject: perf: Use strerror_r instead of strerror Use strerror_r instead of strerror in error messages for thread-safety. This also introduce STRERR_BUFSIZE macro for the default size of message buffer for strerror_r. Signed-off-by: Masami Hiramatsu Cc: Ingo Molnar Cc: Namhyung Kim Cc: Naohiro Aota Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20140814022232.3545.14026.stgit@kbuild-fedora.novalocal Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/perf.c | 10 +++++++--- tools/perf/util/debug.h | 3 +++ 2 files changed, 10 insertions(+), 3 deletions(-) (limited to 'tools') diff --git a/tools/perf/perf.c b/tools/perf/perf.c index 2282d41..452a847 100644 --- a/tools/perf/perf.c +++ b/tools/perf/perf.c @@ -313,6 +313,7 @@ static int run_builtin(struct cmd_struct *p, int argc, const char **argv) int status; struct stat st; const char *prefix; + char sbuf[STRERR_BUFSIZE]; prefix = NULL; if (p->option & RUN_SETUP) @@ -343,7 +344,8 @@ static int run_builtin(struct cmd_struct *p, int argc, const char **argv) status = 1; /* Check for ENOSPC and EIO errors.. */ if (fflush(stdout)) { - fprintf(stderr, "write failure on standard output: %s", strerror(errno)); + fprintf(stderr, "write failure on standard output: %s", + strerror_r(errno, sbuf, sizeof(sbuf))); goto out; } if (ferror(stdout)) { @@ -351,7 +353,8 @@ static int run_builtin(struct cmd_struct *p, int argc, const char **argv) goto out; } if (fclose(stdout)) { - fprintf(stderr, "close failed on standard output: %s", strerror(errno)); + fprintf(stderr, "close failed on standard output: %s", + strerror_r(errno, sbuf, sizeof(sbuf))); goto out; } status = 0; @@ -466,6 +469,7 @@ void pthread__unblock_sigwinch(void) int main(int argc, const char **argv) { const char *cmd; + char sbuf[STRERR_BUFSIZE]; /* The page_size is placed in util object. */ page_size = sysconf(_SC_PAGE_SIZE); @@ -561,7 +565,7 @@ int main(int argc, const char **argv) } fprintf(stderr, "Failed to run command '%s': %s\n", - cmd, strerror(errno)); + cmd, strerror_r(errno, sbuf, sizeof(sbuf))); out: return 1; } diff --git a/tools/perf/util/debug.h b/tools/perf/util/debug.h index 6944ea3..be264d6 100644 --- a/tools/perf/util/debug.h +++ b/tools/perf/util/debug.h @@ -3,6 +3,7 @@ #define __PERF_DEBUG_H #include +#include #include "event.h" #include "../ui/helpline.h" #include "../ui/progress.h" @@ -36,6 +37,8 @@ extern int debug_ordered_events; #define pr_oe_time(t, fmt, ...) pr_time_N(1, debug_ordered_events, t, pr_fmt(fmt), ##__VA_ARGS__) #define pr_oe_time2(t, fmt, ...) pr_time_N(2, debug_ordered_events, t, pr_fmt(fmt), ##__VA_ARGS__) +#define STRERR_BUFSIZE 128 /* For the buffer size of strerror_r */ + int dump_printf(const char *fmt, ...) __attribute__((format(printf, 1, 2))); void trace_event(union perf_event *event); -- cgit v1.1 From 5f03cba41590b5e7db5b66d2b2aa3e146ff8a84f Mon Sep 17 00:00:00 2001 From: Masami Hiramatsu Date: Thu, 14 Aug 2014 02:22:34 +0000 Subject: perf probe: Make error messages thread-safe To make error messages thread-safe, this replaces strerror with strerror_r for warnings, and just shows the return value instead of using strerror for debug messages. Signed-off-by: Masami Hiramatsu Cc: Ingo Molnar Cc: Namhyung Kim Cc: Naohiro Aota Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20140814022234.3545.22199.stgit@kbuild-fedora.novalocal Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-probe.c | 5 ++++- tools/perf/util/probe-event.c | 28 +++++++++++++++------------- tools/perf/util/probe-finder.c | 7 +++++-- 3 files changed, 24 insertions(+), 16 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-probe.c b/tools/perf/builtin-probe.c index c63fa29..347729e 100644 --- a/tools/perf/builtin-probe.c +++ b/tools/perf/builtin-probe.c @@ -290,8 +290,11 @@ static void cleanup_params(void) static void pr_err_with_code(const char *msg, int err) { + char sbuf[STRERR_BUFSIZE]; + pr_err("%s", msg); - pr_debug(" Reason: %s (Code: %d)", strerror(-err), err); + pr_debug(" Reason: %s (Code: %d)", + strerror_r(-err, sbuf, sizeof(sbuf)), err); pr_err("\n"); } diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c index bf39c23..f73595f 100644 --- a/tools/perf/util/probe-event.c +++ b/tools/perf/util/probe-event.c @@ -573,7 +573,7 @@ static int get_real_path(const char *raw_path, const char *comp_dir, static int __show_one_line(FILE *fp, int l, bool skip, bool show_num) { - char buf[LINEBUF_SIZE]; + char buf[LINEBUF_SIZE], sbuf[STRERR_BUFSIZE]; const char *color = show_num ? "" : PERF_COLOR_BLUE; const char *prefix = NULL; @@ -593,7 +593,8 @@ static int __show_one_line(FILE *fp, int l, bool skip, bool show_num) return 1; error: if (ferror(fp)) { - pr_warning("File read error: %s\n", strerror(errno)); + pr_warning("File read error: %s\n", + strerror_r(errno, sbuf, sizeof(sbuf))); return -1; } return 0; @@ -626,6 +627,7 @@ static int __show_line_range(struct line_range *lr, const char *module) FILE *fp; int ret; char *tmp; + char sbuf[STRERR_BUFSIZE]; /* Search a line range */ dinfo = open_debuginfo(module, false); @@ -662,7 +664,7 @@ static int __show_line_range(struct line_range *lr, const char *module) fp = fopen(lr->path, "r"); if (fp == NULL) { pr_warning("Failed to open %s: %s\n", lr->path, - strerror(errno)); + strerror_r(errno, sbuf, sizeof(sbuf))); return -errno; } /* Skip to starting line number */ @@ -1410,8 +1412,7 @@ int synthesize_perf_probe_arg(struct perf_probe_arg *pa, char *buf, size_t len) return tmp - buf; error: - pr_debug("Failed to synthesize perf probe argument: %s\n", - strerror(-ret)); + pr_debug("Failed to synthesize perf probe argument: %d\n", ret); return ret; } @@ -1460,8 +1461,7 @@ static char *synthesize_perf_probe_point(struct perf_probe_point *pp) return buf; error: - pr_debug("Failed to synthesize perf probe point: %s\n", - strerror(-ret)); + pr_debug("Failed to synthesize perf probe point: %d\n", ret); free(buf); return NULL; } @@ -1787,7 +1787,7 @@ static void clear_probe_trace_event(struct probe_trace_event *tev) static void print_open_warning(int err, bool is_kprobe) { - char sbuf[128]; + char sbuf[STRERR_BUFSIZE]; if (err == -ENOENT) { const char *config; @@ -1817,7 +1817,7 @@ static void print_both_open_warning(int kerr, int uerr) pr_warning("Please rebuild kernel with CONFIG_KPROBE_EVENTS " "or/and CONFIG_UPROBE_EVENTS.\n"); else { - char sbuf[128]; + char sbuf[STRERR_BUFSIZE]; pr_warning("Failed to open kprobe events: %s.\n", strerror_r(-kerr, sbuf, sizeof(sbuf))); pr_warning("Failed to open uprobe events: %s.\n", @@ -2038,6 +2038,7 @@ static int write_probe_trace_event(int fd, struct probe_trace_event *tev) { int ret = 0; char *buf = synthesize_probe_trace_command(tev); + char sbuf[STRERR_BUFSIZE]; if (!buf) { pr_debug("Failed to synthesize probe trace event.\n"); @@ -2049,7 +2050,7 @@ static int write_probe_trace_event(int fd, struct probe_trace_event *tev) ret = write(fd, buf, strlen(buf)); if (ret <= 0) pr_warning("Failed to write event: %s\n", - strerror(errno)); + strerror_r(errno, sbuf, sizeof(sbuf))); } free(buf); return ret; @@ -2063,7 +2064,7 @@ static int get_new_event_name(char *buf, size_t len, const char *base, /* Try no suffix */ ret = e_snprintf(buf, len, "%s", base); if (ret < 0) { - pr_debug("snprintf() failed: %s\n", strerror(-ret)); + pr_debug("snprintf() failed: %d\n", ret); return ret; } if (!strlist__has_entry(namelist, buf)) @@ -2079,7 +2080,7 @@ static int get_new_event_name(char *buf, size_t len, const char *base, for (i = 1; i < MAX_EVENT_INDEX; i++) { ret = e_snprintf(buf, len, "%s_%d", base, i); if (ret < 0) { - pr_debug("snprintf() failed: %s\n", strerror(-ret)); + pr_debug("snprintf() failed: %d\n", ret); return ret; } if (!strlist__has_entry(namelist, buf)) @@ -2444,7 +2445,8 @@ static int __del_trace_probe_event(int fd, struct str_node *ent) printf("Removed event: %s\n", ent->s); return 0; error: - pr_warning("Failed to delete event: %s\n", strerror(-ret)); + pr_warning("Failed to delete event: %s\n", + strerror_r(-ret, buf, sizeof(buf))); return ret; } diff --git a/tools/perf/util/probe-finder.c b/tools/perf/util/probe-finder.c index dca9145..9c59356 100644 --- a/tools/perf/util/probe-finder.c +++ b/tools/perf/util/probe-finder.c @@ -281,6 +281,7 @@ static int convert_variable_type(Dwarf_Die *vr_die, struct probe_trace_arg_ref **ref_ptr = &tvar->ref; Dwarf_Die type; char buf[16]; + char sbuf[STRERR_BUFSIZE]; int bsize, boffs, total; int ret; @@ -367,7 +368,7 @@ formatted: if (ret >= 16) ret = -E2BIG; pr_warning("Failed to convert variable type: %s\n", - strerror(-ret)); + strerror_r(-ret, sbuf, sizeof(sbuf))); return ret; } tvar->type = strdup(buf); @@ -779,10 +780,12 @@ static int find_lazy_match_lines(struct intlist *list, size_t line_len; ssize_t len; int count = 0, linenum = 1; + char sbuf[STRERR_BUFSIZE]; fp = fopen(fname, "r"); if (!fp) { - pr_warning("Failed to open %s: %s\n", fname, strerror(errno)); + pr_warning("Failed to open %s: %s\n", fname, + strerror_r(errno, sbuf, sizeof(sbuf))); return -errno; } -- cgit v1.1 From 6e81c74cbf4b64620170da14844f1dc8a9a5950f Mon Sep 17 00:00:00 2001 From: Masami Hiramatsu Date: Thu, 14 Aug 2014 02:22:36 +0000 Subject: perf util: Replace strerror with strerror_r for thread-safety Replaces all strerror with strerror_r in util for making the perf lib thread-safe. Signed-off-by: Masami Hiramatsu Cc: Ingo Molnar Cc: Namhyung Kim Cc: Naohiro Aota Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20140814022236.3545.3367.stgit@kbuild-fedora.novalocal Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/cloexec.c | 6 ++++-- tools/perf/util/data.c | 8 ++++++-- tools/perf/util/dso.c | 8 ++++++-- tools/perf/util/evlist.c | 2 +- tools/perf/util/evsel.c | 7 +++++-- tools/perf/util/parse-events.c | 5 ++++- tools/perf/util/run-command.c | 9 +++++++-- tools/perf/util/util.c | 5 +++-- 8 files changed, 36 insertions(+), 14 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/cloexec.c b/tools/perf/util/cloexec.c index 4945aa5..47b78b3 100644 --- a/tools/perf/util/cloexec.c +++ b/tools/perf/util/cloexec.c @@ -3,6 +3,7 @@ #include "../perf.h" #include "cloexec.h" #include "asm/bug.h" +#include "debug.h" static unsigned long flag = PERF_FLAG_FD_CLOEXEC; @@ -18,6 +19,7 @@ static int perf_flag_probe(void) int err; int cpu; pid_t pid = -1; + char sbuf[STRERR_BUFSIZE]; cpu = sched_getcpu(); if (cpu < 0) @@ -42,7 +44,7 @@ static int perf_flag_probe(void) WARN_ONCE(err != EINVAL && err != EBUSY, "perf_event_open(..., PERF_FLAG_FD_CLOEXEC) failed with unexpected error %d (%s)\n", - err, strerror(err)); + err, strerror_r(err, sbuf, sizeof(sbuf))); /* not supported, confirm error related to PERF_FLAG_FD_CLOEXEC */ fd = sys_perf_event_open(&attr, pid, cpu, -1, 0); @@ -50,7 +52,7 @@ static int perf_flag_probe(void) if (WARN_ONCE(fd < 0 && err != EBUSY, "perf_event_open(..., 0) failed unexpectedly with error %d (%s)\n", - err, strerror(err))) + err, strerror_r(err, sbuf, sizeof(sbuf)))) return -1; close(fd); diff --git a/tools/perf/util/data.c b/tools/perf/util/data.c index 29d720c..1921942 100644 --- a/tools/perf/util/data.c +++ b/tools/perf/util/data.c @@ -50,12 +50,14 @@ static int open_file_read(struct perf_data_file *file) { struct stat st; int fd; + char sbuf[STRERR_BUFSIZE]; fd = open(file->path, O_RDONLY); if (fd < 0) { int err = errno; - pr_err("failed to open %s: %s", file->path, strerror(err)); + pr_err("failed to open %s: %s", file->path, + strerror_r(err, sbuf, sizeof(sbuf))); if (err == ENOENT && !strcmp(file->path, "perf.data")) pr_err(" (try 'perf record' first)"); pr_err("\n"); @@ -88,6 +90,7 @@ static int open_file_read(struct perf_data_file *file) static int open_file_write(struct perf_data_file *file) { int fd; + char sbuf[STRERR_BUFSIZE]; if (check_backup(file)) return -1; @@ -95,7 +98,8 @@ static int open_file_write(struct perf_data_file *file) fd = open(file->path, O_CREAT|O_RDWR|O_TRUNC, S_IRUSR|S_IWUSR); if (fd < 0) - pr_err("failed to open %s : %s\n", file->path, strerror(errno)); + pr_err("failed to open %s : %s\n", file->path, + strerror_r(errno, sbuf, sizeof(sbuf))); return fd; } diff --git a/tools/perf/util/dso.c b/tools/perf/util/dso.c index bdafd30..55e39dc 100644 --- a/tools/perf/util/dso.c +++ b/tools/perf/util/dso.c @@ -162,13 +162,15 @@ static void close_first_dso(void); static int do_open(char *name) { int fd; + char sbuf[STRERR_BUFSIZE]; do { fd = open(name, O_RDONLY); if (fd >= 0) return fd; - pr_debug("dso open failed, mmap: %s\n", strerror(errno)); + pr_debug("dso open failed, mmap: %s\n", + strerror_r(errno, sbuf, sizeof(sbuf))); if (!dso__data_open_cnt || errno != EMFILE) break; @@ -530,10 +532,12 @@ static ssize_t cached_read(struct dso *dso, u64 offset, u8 *data, ssize_t size) static int data_file_size(struct dso *dso) { struct stat st; + char sbuf[STRERR_BUFSIZE]; if (!dso->data.file_size) { if (fstat(dso->data.fd, &st)) { - pr_err("dso mmap failed, fstat: %s\n", strerror(errno)); + pr_err("dso mmap failed, fstat: %s\n", + strerror_r(errno, sbuf, sizeof(sbuf))); return -1; } dso->data.file_size = st.st_size; diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index 5dcd28c..a3e28b4 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -1295,7 +1295,7 @@ int perf_evlist__strerror_open(struct perf_evlist *evlist __maybe_unused, int err, char *buf, size_t size) { int printed, value; - char sbuf[128], *emsg = strerror_r(err, sbuf, sizeof(sbuf)); + char sbuf[STRERR_BUFSIZE], *emsg = strerror_r(err, sbuf, sizeof(sbuf)); switch (err) { case EACCES: diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index 01ce14c..b38de58 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -2027,6 +2027,8 @@ bool perf_evsel__fallback(struct perf_evsel *evsel, int err, int perf_evsel__open_strerror(struct perf_evsel *evsel, struct target *target, int err, char *msg, size_t size) { + char sbuf[STRERR_BUFSIZE]; + switch (err) { case EPERM: case EACCES: @@ -2072,8 +2074,9 @@ int perf_evsel__open_strerror(struct perf_evsel *evsel, struct target *target, } return scnprintf(msg, size, - "The sys_perf_event_open() syscall returned with %d (%s) for event (%s). \n" + "The sys_perf_event_open() syscall returned with %d (%s) for event (%s).\n" "/bin/dmesg may provide additional information.\n" "No CONFIG_PERF_EVENTS=y kernel support configured?\n", - err, strerror(err), perf_evsel__name(evsel)); + err, strerror_r(err, sbuf, sizeof(sbuf)), + perf_evsel__name(evsel)); } diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c index 1e15df1..e34c81a 100644 --- a/tools/perf/util/parse-events.c +++ b/tools/perf/util/parse-events.c @@ -10,6 +10,7 @@ #include "symbol.h" #include "cache.h" #include "header.h" +#include "debug.h" #include #include "parse-events-bison.h" #define YY_EXTRA_TYPE int @@ -1006,9 +1007,11 @@ void print_tracepoint_events(const char *subsys_glob, const char *event_glob, struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent; char evt_path[MAXPATHLEN]; char dir_path[MAXPATHLEN]; + char sbuf[STRERR_BUFSIZE]; if (debugfs_valid_mountpoint(tracing_events_path)) { - printf(" [ Tracepoints not available: %s ]\n", strerror(errno)); + printf(" [ Tracepoints not available: %s ]\n", + strerror_r(errno, sbuf, sizeof(sbuf))); return; } diff --git a/tools/perf/util/run-command.c b/tools/perf/util/run-command.c index da8e9b2..34622b5 100644 --- a/tools/perf/util/run-command.c +++ b/tools/perf/util/run-command.c @@ -1,6 +1,7 @@ #include "cache.h" #include "run-command.h" #include "exec_cmd.h" +#include "debug.h" static inline void close_pair(int fd[2]) { @@ -19,6 +20,7 @@ int start_command(struct child_process *cmd) { int need_in, need_out, need_err; int fdin[2], fdout[2], fderr[2]; + char sbuf[STRERR_BUFSIZE]; /* * In case of errors we must keep the promise to close FDs @@ -99,7 +101,7 @@ int start_command(struct child_process *cmd) if (cmd->dir && chdir(cmd->dir)) die("exec %s: cd to %s failed (%s)", cmd->argv[0], - cmd->dir, strerror(errno)); + cmd->dir, strerror_r(errno, sbuf, sizeof(sbuf))); if (cmd->env) { for (; *cmd->env; cmd->env++) { if (strchr(*cmd->env, '=')) @@ -153,6 +155,8 @@ int start_command(struct child_process *cmd) static int wait_or_whine(pid_t pid) { + char sbuf[STRERR_BUFSIZE]; + for (;;) { int status, code; pid_t waiting = waitpid(pid, &status, 0); @@ -160,7 +164,8 @@ static int wait_or_whine(pid_t pid) if (waiting < 0) { if (errno == EINTR) continue; - error("waitpid failed (%s)", strerror(errno)); + error("waitpid failed (%s)", + strerror_r(errno, sbuf, sizeof(sbuf))); return -ERR_RUN_COMMAND_WAITPID; } if (waiting != pid) diff --git a/tools/perf/util/util.c b/tools/perf/util/util.c index 25822bd..24e8d87 100644 --- a/tools/perf/util/util.c +++ b/tools/perf/util/util.c @@ -456,6 +456,7 @@ int filename__read_str(const char *filename, char **buf, size_t *sizep) size_t size = 0, alloc_size = 0; void *bf = NULL, *nbf; int fd, n, err = 0; + char sbuf[STRERR_BUFSIZE]; fd = open(filename, O_RDONLY); if (fd < 0) @@ -476,8 +477,8 @@ int filename__read_str(const char *filename, char **buf, size_t *sizep) n = read(fd, bf + size, alloc_size - size); if (n < 0) { if (size) { - pr_warning("read failed %d: %s\n", - errno, strerror(errno)); + pr_warning("read failed %d: %s\n", errno, + strerror_r(errno, sbuf, sizeof(sbuf))); err = 0; } else err = -errno; -- cgit v1.1 From 809adea685f7dbc9bdcc38b27d24801c461d8413 Mon Sep 17 00:00:00 2001 From: Masami Hiramatsu Date: Thu, 14 Aug 2014 02:22:38 +0000 Subject: perf top: Use strerror_r instead of strerror Use strerror_r instead of strerror in error message for thread-safety. Signed-off-by: Masami Hiramatsu Cc: Ingo Molnar Cc: Namhyung Kim Cc: Naohiro Aota Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20140814022238.3545.15569.stgit@kbuild-fedora.novalocal Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-top.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index 87a6615..a77ff6c 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -899,7 +899,7 @@ try_again: if (perf_evlist__mmap(evlist, opts->mmap_pages, false) < 0) { ui__error("Failed to mmap with %d (%s)\n", - errno, strerror(errno)); + errno, strerror_r(errno, msg, sizeof(msg))); goto out_err; } -- cgit v1.1 From 942a91ed3ffff0267944ed3161ae292d0960fd44 Mon Sep 17 00:00:00 2001 From: Masami Hiramatsu Date: Thu, 14 Aug 2014 02:22:41 +0000 Subject: perf trace: Use strerror_r instead of strerror Use strerror_r instead of strerror in error message for thead-safety. Signed-off-by: Masami Hiramatsu Cc: Ingo Molnar Cc: Namhyung Kim Cc: Naohiro Aota Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20140814022241.3545.97543.stgit@kbuild-fedora.novalocal Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-trace.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index d080b9c..a9e96ff 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -1750,7 +1750,7 @@ static int trace__sys_exit(struct trace *trace, struct perf_evsel *evsel, signed_print: fprintf(trace->output, ") = %d", ret); } else if (ret < 0 && sc->fmt->errmsg) { - char bf[256]; + char bf[STRERR_BUFSIZE]; const char *emsg = strerror_r(-ret, bf, sizeof(bf)), *e = audit_errno_to_name(-ret); @@ -2044,6 +2044,7 @@ static int trace__run(struct trace *trace, int argc, const char **argv) int err = -1, i; unsigned long before; const bool forks = argc > 0; + char sbuf[STRERR_BUFSIZE]; trace->live = true; @@ -2105,7 +2106,8 @@ static int trace__run(struct trace *trace, int argc, const char **argv) err = perf_evlist__mmap(evlist, trace->opts.mmap_pages, false); if (err < 0) { - fprintf(trace->output, "Couldn't mmap the events: %s\n", strerror(errno)); + fprintf(trace->output, "Couldn't mmap the events: %s\n", + strerror_r(errno, sbuf, sizeof(sbuf))); goto out_delete_evlist; } -- cgit v1.1 From 35550da389ba8752f024a44ef14b74001c4fc4d3 Mon Sep 17 00:00:00 2001 From: Masami Hiramatsu Date: Thu, 14 Aug 2014 02:22:43 +0000 Subject: perf record: Use strerror_r instead of strerror Use strerror_r instead of strerror in error messages for thread-safety. Signed-off-by: Masami Hiramatsu Cc: Ingo Molnar Cc: Namhyung Kim Cc: Naohiro Aota Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20140814022243.3545.7411.stgit@kbuild-fedora.novalocal Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-record.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index 4db670d..87e28a4 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -161,7 +161,7 @@ try_again: if (perf_evlist__apply_filters(evlist)) { error("failed to set filter with %d (%s)\n", errno, - strerror(errno)); + strerror_r(errno, msg, sizeof(msg))); rc = -1; goto out; } @@ -175,7 +175,8 @@ try_again: "(current value: %u)\n", opts->mmap_pages); rc = -errno; } else { - pr_err("failed to mmap with %d (%s)\n", errno, strerror(errno)); + pr_err("failed to mmap with %d (%s)\n", errno, + strerror_r(errno, msg, sizeof(msg))); rc = -errno; } goto out; @@ -480,7 +481,7 @@ static int __cmd_record(struct record *rec, int argc, const char **argv) } if (forks && workload_exec_errno) { - char msg[512]; + char msg[STRERR_BUFSIZE]; const char *emsg = strerror_r(workload_exec_errno, msg, sizeof(msg)); pr_err("Workload failed: %s\n", emsg); err = -1; -- cgit v1.1 From ba3dfff8ad2d98df0c8116faaeb281c93e161636 Mon Sep 17 00:00:00 2001 From: Masami Hiramatsu Date: Thu, 14 Aug 2014 02:22:45 +0000 Subject: perf test: Use strerror_r instead of strerror Use strerror_r instead of strerror in error messages for thread-safety. Signed-off-by: Masami Hiramatsu Cc: Ingo Molnar Cc: Namhyung Kim Cc: Naohiro Aota Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20140814022245.3545.91394.stgit@kbuild-fedora.novalocal Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/tests/builtin-test.c | 4 +++- tools/perf/tests/mmap-basic.c | 7 ++++--- tools/perf/tests/open-syscall-all-cpus.c | 5 +++-- tools/perf/tests/open-syscall-tp-fields.c | 7 +++++-- tools/perf/tests/open-syscall.c | 3 ++- tools/perf/tests/perf-record.c | 13 +++++++++---- tools/perf/tests/rdpmc.c | 6 ++++-- tools/perf/tests/sw-clock.c | 6 ++++-- tools/perf/tests/task-exit.c | 6 ++++-- 9 files changed, 38 insertions(+), 19 deletions(-) (limited to 'tools') diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c index c6796d2..9948136 100644 --- a/tools/perf/tests/builtin-test.c +++ b/tools/perf/tests/builtin-test.c @@ -185,9 +185,11 @@ static bool perf_test__matches(int curr, int argc, const char *argv[]) static int run_test(struct test *test) { int status, err = -1, child = fork(); + char sbuf[STRERR_BUFSIZE]; if (child < 0) { - pr_err("failed to fork test: %s\n", strerror(errno)); + pr_err("failed to fork test: %s\n", + strerror_r(errno, sbuf, sizeof(sbuf))); return -1; } diff --git a/tools/perf/tests/mmap-basic.c b/tools/perf/tests/mmap-basic.c index 1422634..9b9622a3 100644 --- a/tools/perf/tests/mmap-basic.c +++ b/tools/perf/tests/mmap-basic.c @@ -31,6 +31,7 @@ int test__basic_mmap(void) unsigned int nr_events[nsyscalls], expected_nr_events[nsyscalls], i, j; struct perf_evsel *evsels[nsyscalls], *evsel; + char sbuf[STRERR_BUFSIZE]; threads = thread_map__new(-1, getpid(), UINT_MAX); if (threads == NULL) { @@ -49,7 +50,7 @@ int test__basic_mmap(void) sched_setaffinity(0, sizeof(cpu_set), &cpu_set); if (sched_setaffinity(0, sizeof(cpu_set), &cpu_set) < 0) { pr_debug("sched_setaffinity() failed on CPU %d: %s ", - cpus->map[0], strerror(errno)); + cpus->map[0], strerror_r(errno, sbuf, sizeof(sbuf))); goto out_free_cpus; } @@ -79,7 +80,7 @@ int test__basic_mmap(void) if (perf_evsel__open(evsels[i], cpus, threads) < 0) { pr_debug("failed to open counter: %s, " "tweak /proc/sys/kernel/perf_event_paranoid?\n", - strerror(errno)); + strerror_r(errno, sbuf, sizeof(sbuf))); goto out_delete_evlist; } @@ -89,7 +90,7 @@ int test__basic_mmap(void) if (perf_evlist__mmap(evlist, 128, true) < 0) { pr_debug("failed to mmap events: %d (%s)\n", errno, - strerror(errno)); + strerror_r(errno, sbuf, sizeof(sbuf))); goto out_delete_evlist; } diff --git a/tools/perf/tests/open-syscall-all-cpus.c b/tools/perf/tests/open-syscall-all-cpus.c index 5fecdbd..8fa82d1 100644 --- a/tools/perf/tests/open-syscall-all-cpus.c +++ b/tools/perf/tests/open-syscall-all-cpus.c @@ -12,6 +12,7 @@ int test__open_syscall_event_on_all_cpus(void) unsigned int nr_open_calls = 111, i; cpu_set_t cpu_set; struct thread_map *threads = thread_map__new(-1, getpid(), UINT_MAX); + char sbuf[STRERR_BUFSIZE]; if (threads == NULL) { pr_debug("thread_map__new\n"); @@ -35,7 +36,7 @@ int test__open_syscall_event_on_all_cpus(void) if (perf_evsel__open(evsel, cpus, threads) < 0) { pr_debug("failed to open counter: %s, " "tweak /proc/sys/kernel/perf_event_paranoid?\n", - strerror(errno)); + strerror_r(errno, sbuf, sizeof(sbuf))); goto out_evsel_delete; } @@ -56,7 +57,7 @@ int test__open_syscall_event_on_all_cpus(void) if (sched_setaffinity(0, sizeof(cpu_set), &cpu_set) < 0) { pr_debug("sched_setaffinity() failed on CPU %d: %s ", cpus->map[cpu], - strerror(errno)); + strerror_r(errno, sbuf, sizeof(sbuf))); goto out_close_fd; } for (i = 0; i < ncalls; ++i) { diff --git a/tools/perf/tests/open-syscall-tp-fields.c b/tools/perf/tests/open-syscall-tp-fields.c index 0785b64..922bdb6 100644 --- a/tools/perf/tests/open-syscall-tp-fields.c +++ b/tools/perf/tests/open-syscall-tp-fields.c @@ -22,6 +22,7 @@ int test__syscall_open_tp_fields(void) struct perf_evlist *evlist = perf_evlist__new(); struct perf_evsel *evsel; int err = -1, i, nr_events = 0, nr_polls = 0; + char sbuf[STRERR_BUFSIZE]; if (evlist == NULL) { pr_debug("%s: perf_evlist__new\n", __func__); @@ -48,13 +49,15 @@ int test__syscall_open_tp_fields(void) err = perf_evlist__open(evlist); if (err < 0) { - pr_debug("perf_evlist__open: %s\n", strerror(errno)); + pr_debug("perf_evlist__open: %s\n", + strerror_r(errno, sbuf, sizeof(sbuf))); goto out_delete_evlist; } err = perf_evlist__mmap(evlist, UINT_MAX, false); if (err < 0) { - pr_debug("perf_evlist__mmap: %s\n", strerror(errno)); + pr_debug("perf_evlist__mmap: %s\n", + strerror_r(errno, sbuf, sizeof(sbuf))); goto out_delete_evlist; } diff --git a/tools/perf/tests/open-syscall.c b/tools/perf/tests/open-syscall.c index c1dc7d2..a33b2da 100644 --- a/tools/perf/tests/open-syscall.c +++ b/tools/perf/tests/open-syscall.c @@ -9,6 +9,7 @@ int test__open_syscall_event(void) struct perf_evsel *evsel; unsigned int nr_open_calls = 111, i; struct thread_map *threads = thread_map__new(-1, getpid(), UINT_MAX); + char sbuf[STRERR_BUFSIZE]; if (threads == NULL) { pr_debug("thread_map__new\n"); @@ -24,7 +25,7 @@ int test__open_syscall_event(void) if (perf_evsel__open_per_thread(evsel, threads) < 0) { pr_debug("failed to open counter: %s, " "tweak /proc/sys/kernel/perf_event_paranoid?\n", - strerror(errno)); + strerror_r(errno, sbuf, sizeof(sbuf))); goto out_evsel_delete; } diff --git a/tools/perf/tests/perf-record.c b/tools/perf/tests/perf-record.c index aca1a83..2ce753c 100644 --- a/tools/perf/tests/perf-record.c +++ b/tools/perf/tests/perf-record.c @@ -59,6 +59,7 @@ int test__PERF_RECORD(void) int err = -1, errs = 0, i, wakeups = 0; u32 cpu; int total_events = 0, nr_events[PERF_RECORD_MAX] = { 0, }; + char sbuf[STRERR_BUFSIZE]; if (evlist == NULL || argv == NULL) { pr_debug("Not enough memory to create evlist\n"); @@ -100,7 +101,8 @@ int test__PERF_RECORD(void) err = sched__get_first_possible_cpu(evlist->workload.pid, &cpu_mask); if (err < 0) { - pr_debug("sched__get_first_possible_cpu: %s\n", strerror(errno)); + pr_debug("sched__get_first_possible_cpu: %s\n", + strerror_r(errno, sbuf, sizeof(sbuf))); goto out_delete_evlist; } @@ -110,7 +112,8 @@ int test__PERF_RECORD(void) * So that we can check perf_sample.cpu on all the samples. */ if (sched_setaffinity(evlist->workload.pid, cpu_mask_size, &cpu_mask) < 0) { - pr_debug("sched_setaffinity: %s\n", strerror(errno)); + pr_debug("sched_setaffinity: %s\n", + strerror_r(errno, sbuf, sizeof(sbuf))); goto out_delete_evlist; } @@ -120,7 +123,8 @@ int test__PERF_RECORD(void) */ err = perf_evlist__open(evlist); if (err < 0) { - pr_debug("perf_evlist__open: %s\n", strerror(errno)); + pr_debug("perf_evlist__open: %s\n", + strerror_r(errno, sbuf, sizeof(sbuf))); goto out_delete_evlist; } @@ -131,7 +135,8 @@ int test__PERF_RECORD(void) */ err = perf_evlist__mmap(evlist, opts.mmap_pages, false); if (err < 0) { - pr_debug("perf_evlist__mmap: %s\n", strerror(errno)); + pr_debug("perf_evlist__mmap: %s\n", + strerror_r(errno, sbuf, sizeof(sbuf))); goto out_delete_evlist; } diff --git a/tools/perf/tests/rdpmc.c b/tools/perf/tests/rdpmc.c index c04d1f2..d31f2c4 100644 --- a/tools/perf/tests/rdpmc.c +++ b/tools/perf/tests/rdpmc.c @@ -100,6 +100,7 @@ static int __test__rdpmc(void) }; u64 delta_sum = 0; struct sigaction sa; + char sbuf[STRERR_BUFSIZE]; sigfillset(&sa.sa_mask); sa.sa_sigaction = segfault_handler; @@ -109,14 +110,15 @@ static int __test__rdpmc(void) perf_event_open_cloexec_flag()); if (fd < 0) { pr_err("Error: sys_perf_event_open() syscall returned " - "with %d (%s)\n", fd, strerror(errno)); + "with %d (%s)\n", fd, + strerror_r(errno, sbuf, sizeof(sbuf))); return -1; } addr = mmap(NULL, page_size, PROT_READ, MAP_SHARED, fd, 0); if (addr == (void *)(-1)) { pr_err("Error: mmap() syscall returned with (%s)\n", - strerror(errno)); + strerror_r(errno, sbuf, sizeof(sbuf))); goto out_close; } diff --git a/tools/perf/tests/sw-clock.c b/tools/perf/tests/sw-clock.c index 983d6b8..1aa21c9 100644 --- a/tools/perf/tests/sw-clock.c +++ b/tools/perf/tests/sw-clock.c @@ -22,6 +22,7 @@ static int __test__sw_clock_freq(enum perf_sw_ids clock_id) volatile int tmp = 0; u64 total_periods = 0; int nr_samples = 0; + char sbuf[STRERR_BUFSIZE]; union perf_event *event; struct perf_evsel *evsel; struct perf_evlist *evlist; @@ -62,14 +63,15 @@ static int __test__sw_clock_freq(enum perf_sw_ids clock_id) err = -errno; pr_debug("Couldn't open evlist: %s\nHint: check %s, using %" PRIu64 " in this test.\n", - strerror(errno), knob, (u64)attr.sample_freq); + strerror_r(errno, sbuf, sizeof(sbuf)), + knob, (u64)attr.sample_freq); goto out_delete_evlist; } err = perf_evlist__mmap(evlist, 128, true); if (err < 0) { pr_debug("failed to mmap event: %d (%s)\n", errno, - strerror(errno)); + strerror_r(errno, sbuf, sizeof(sbuf))); goto out_delete_evlist; } diff --git a/tools/perf/tests/task-exit.c b/tools/perf/tests/task-exit.c index 5ff3db3..87522f0 100644 --- a/tools/perf/tests/task-exit.c +++ b/tools/perf/tests/task-exit.c @@ -42,6 +42,7 @@ int test__task_exit(void) .uses_mmap = true, }; const char *argv[] = { "true", NULL }; + char sbuf[STRERR_BUFSIZE]; signal(SIGCHLD, sig_handler); @@ -82,13 +83,14 @@ int test__task_exit(void) err = perf_evlist__open(evlist); if (err < 0) { - pr_debug("Couldn't open the evlist: %s\n", strerror(-err)); + pr_debug("Couldn't open the evlist: %s\n", + strerror_r(-err, sbuf, sizeof(sbuf))); goto out_delete_evlist; } if (perf_evlist__mmap(evlist, 128, true) < 0) { pr_debug("failed to mmap events: %d (%s)\n", errno, - strerror(errno)); + strerror_r(errno, sbuf, sizeof(sbuf))); goto out_delete_evlist; } -- cgit v1.1 From fb74fbda42dc5bcbd9bae5d75bfb6755948db21d Mon Sep 17 00:00:00 2001 From: Masami Hiramatsu Date: Thu, 14 Aug 2014 02:22:47 +0000 Subject: perf sched: Use strerror_r instead of strerror Use strerror_r instead of strerror in error message for thread-safety. Signed-off-by: Masami Hiramatsu Cc: Ingo Molnar Cc: Namhyung Kim Cc: Naohiro Aota Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20140814022247.3545.4564.stgit@kbuild-fedora.novalocal Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-sched.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c index f5874a2..9c9287f 100644 --- a/tools/perf/builtin-sched.c +++ b/tools/perf/builtin-sched.c @@ -428,6 +428,7 @@ static u64 get_cpu_usage_nsec_parent(void) static int self_open_counters(void) { struct perf_event_attr attr; + char sbuf[STRERR_BUFSIZE]; int fd; memset(&attr, 0, sizeof(attr)); @@ -440,7 +441,8 @@ static int self_open_counters(void) if (fd < 0) pr_err("Error: sys_perf_event_open() syscall returned " - "with %d (%s)\n", fd, strerror(errno)); + "with %d (%s)\n", fd, + strerror_r(errno, sbuf, sizeof(sbuf))); return fd; } -- cgit v1.1 From 340481ada1af9322d99e9c1ba874391f53ff4fce Mon Sep 17 00:00:00 2001 From: Masami Hiramatsu Date: Thu, 14 Aug 2014 02:22:49 +0000 Subject: perf buildid-cache: Use strerror_r instead of strerror Use strerror_r instead of strerror in error messages for thread-safety. Signed-off-by: Masami Hiramatsu Cc: Ingo Molnar Cc: Namhyung Kim Cc: Naohiro Aota Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20140814022249.3545.53211.stgit@kbuild-fedora.novalocal Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-buildid-cache.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-buildid-cache.c b/tools/perf/builtin-buildid-cache.c index ac5838e..7038575 100644 --- a/tools/perf/builtin-buildid-cache.c +++ b/tools/perf/builtin-buildid-cache.c @@ -291,6 +291,7 @@ int cmd_buildid_cache(int argc, const char **argv, *missing_filename = NULL, *update_name_list_str = NULL, *kcore_filename; + char sbuf[STRERR_BUFSIZE]; struct perf_data_file file = { .mode = PERF_DATA_MODE_READ, @@ -347,7 +348,7 @@ int cmd_buildid_cache(int argc, const char **argv, continue; } pr_warning("Couldn't add %s: %s\n", - pos->s, strerror(errno)); + pos->s, strerror_r(errno, sbuf, sizeof(sbuf))); } strlist__delete(list); @@ -365,7 +366,7 @@ int cmd_buildid_cache(int argc, const char **argv, continue; } pr_warning("Couldn't remove %s: %s\n", - pos->s, strerror(errno)); + pos->s, strerror_r(errno, sbuf, sizeof(sbuf))); } strlist__delete(list); @@ -386,7 +387,7 @@ int cmd_buildid_cache(int argc, const char **argv, continue; } pr_warning("Couldn't update %s: %s\n", - pos->s, strerror(errno)); + pos->s, strerror_r(errno, sbuf, sizeof(sbuf))); } strlist__delete(list); -- cgit v1.1 From f9f33fdba159a9c163ecf1dc0106ebd4c2498130 Mon Sep 17 00:00:00 2001 From: Masami Hiramatsu Date: Thu, 14 Aug 2014 02:22:51 +0000 Subject: perf kvm: Use strerror_r instead of strerror Use strerror_r instead of strerror in error messages for thread-safety. Signed-off-by: Masami Hiramatsu Cc: Ingo Molnar Cc: Namhyung Kim Cc: Naohiro Aota Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20140814022251.3545.83718.stgit@kbuild-fedora.novalocal Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-kvm.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c index 14d03ed..1a4ef9c 100644 --- a/tools/perf/builtin-kvm.c +++ b/tools/perf/builtin-kvm.c @@ -990,6 +990,7 @@ static int kvm_live_open_events(struct perf_kvm_stat *kvm) int err, rc = -1; struct perf_evsel *pos; struct perf_evlist *evlist = kvm->evlist; + char sbuf[STRERR_BUFSIZE]; perf_evlist__config(evlist, &kvm->opts); @@ -1026,12 +1027,14 @@ static int kvm_live_open_events(struct perf_kvm_stat *kvm) err = perf_evlist__open(evlist); if (err < 0) { - printf("Couldn't create the events: %s\n", strerror(errno)); + printf("Couldn't create the events: %s\n", + strerror_r(errno, sbuf, sizeof(sbuf))); goto out; } if (perf_evlist__mmap(evlist, kvm->opts.mmap_pages, false) < 0) { - ui__error("Failed to mmap the events: %s\n", strerror(errno)); + ui__error("Failed to mmap the events: %s\n", + strerror_r(errno, sbuf, sizeof(sbuf))); perf_evlist__close(evlist); goto out; } -- cgit v1.1 From ede395d27c60c06a2173e7a9c0f4a929a1fef73e Mon Sep 17 00:00:00 2001 From: Masami Hiramatsu Date: Thu, 14 Aug 2014 02:22:53 +0000 Subject: perf help: Use strerror_r instead of strerror Use strerror_r instead of strerror in error messages for thread-safety. Signed-off-by: Masami Hiramatsu Cc: Ingo Molnar Cc: Namhyung Kim Cc: Naohiro Aota Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20140814022253.3545.82136.stgit@kbuild-fedora.novalocal Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-help.c | 20 ++++++++++++++++---- 1 file changed, 16 insertions(+), 4 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-help.c b/tools/perf/builtin-help.c index 0384d93..25d2062 100644 --- a/tools/perf/builtin-help.c +++ b/tools/perf/builtin-help.c @@ -103,6 +103,8 @@ static int check_emacsclient_version(void) static void exec_woman_emacs(const char *path, const char *page) { + char sbuf[STRERR_BUFSIZE]; + if (!check_emacsclient_version()) { /* This works only with emacsclient version >= 22. */ struct strbuf man_page = STRBUF_INIT; @@ -111,16 +113,19 @@ static void exec_woman_emacs(const char *path, const char *page) path = "emacsclient"; strbuf_addf(&man_page, "(woman \"%s\")", page); execlp(path, "emacsclient", "-e", man_page.buf, NULL); - warning("failed to exec '%s': %s", path, strerror(errno)); + warning("failed to exec '%s': %s", path, + strerror_r(errno, sbuf, sizeof(sbuf))); } } static void exec_man_konqueror(const char *path, const char *page) { const char *display = getenv("DISPLAY"); + if (display && *display) { struct strbuf man_page = STRBUF_INIT; const char *filename = "kfmclient"; + char sbuf[STRERR_BUFSIZE]; /* It's simpler to launch konqueror using kfmclient. */ if (path) { @@ -139,24 +144,31 @@ static void exec_man_konqueror(const char *path, const char *page) path = "kfmclient"; strbuf_addf(&man_page, "man:%s(1)", page); execlp(path, filename, "newTab", man_page.buf, NULL); - warning("failed to exec '%s': %s", path, strerror(errno)); + warning("failed to exec '%s': %s", path, + strerror_r(errno, sbuf, sizeof(sbuf))); } } static void exec_man_man(const char *path, const char *page) { + char sbuf[STRERR_BUFSIZE]; + if (!path) path = "man"; execlp(path, "man", page, NULL); - warning("failed to exec '%s': %s", path, strerror(errno)); + warning("failed to exec '%s': %s", path, + strerror_r(errno, sbuf, sizeof(sbuf))); } static void exec_man_cmd(const char *cmd, const char *page) { struct strbuf shell_cmd = STRBUF_INIT; + char sbuf[STRERR_BUFSIZE]; + strbuf_addf(&shell_cmd, "%s %s", cmd, page); execl("/bin/sh", "sh", "-c", shell_cmd.buf, NULL); - warning("failed to exec '%s': %s", cmd, strerror(errno)); + warning("failed to exec '%s': %s", cmd, + strerror_r(errno, sbuf, sizeof(sbuf))); } static void add_man_viewer(const char *name) -- cgit v1.1 From 759e612bf96627b64fcafe4174b3f6f2dedf2c0d Mon Sep 17 00:00:00 2001 From: Masami Hiramatsu Date: Thu, 14 Aug 2014 02:22:55 +0000 Subject: perf stat: Use strerror_r instead of strerror Use strerror_r instead of strerror in error message for thread-safety. Signed-off-by: Masami Hiramatsu Cc: Ingo Molnar Cc: Namhyung Kim Cc: Naohiro Aota Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20140814022255.3545.81549.stgit@kbuild-fedora.novalocal Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-stat.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c index 3e80aa1..5fe0edb 100644 --- a/tools/perf/builtin-stat.c +++ b/tools/perf/builtin-stat.c @@ -593,7 +593,7 @@ static int __run_perf_stat(int argc, const char **argv) if (perf_evlist__apply_filters(evsel_list)) { error("failed to set filter with %d (%s)\n", errno, - strerror(errno)); + strerror_r(errno, msg, sizeof(msg))); return -1; } -- cgit v1.1 From 700be564308bcfc217bd3515d634b56f0c3c1bbb Mon Sep 17 00:00:00 2001 From: Don Zickus Date: Tue, 19 Aug 2014 22:31:14 -0400 Subject: perf symbols: Don't try to find DSOs in SYSV maps We are seeing a lot of the following with regards to SYSV memory Failed to open /SYSV0000279c, continuing without symbols We don't believe this memory will have DSO info, so treat it like the heap and stack for now and skip it to prevent the warning. Signed-off-by: Don Zickus Signed-off-by: Joe Mario Cc: Jiri Olsa Cc: Joe Mario Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1408501874-244377-1-git-send-email-dzickus@redhat.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/map.c | 1 + 1 file changed, 1 insertion(+) (limited to 'tools') diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c index 31b8905..b709059 100644 --- a/tools/perf/util/map.c +++ b/tools/perf/util/map.c @@ -31,6 +31,7 @@ static inline int is_anon_memory(const char *filename) static inline int is_no_dso_memory(const char *filename) { return !strncmp(filename, "[stack", 6) || + !strncmp(filename, "/SYSV",5) || !strcmp(filename, "[heap]"); } -- cgit v1.1 From ad7e767a726dd7dffad45d7fcbf371094e7f2288 Mon Sep 17 00:00:00 2001 From: Sukadev Bhattiprolu Date: Thu, 7 Aug 2014 00:27:00 -0700 Subject: perf tools powerpc: Explicitly include util/debug.h Looks like util/debug.h was indirectly included before and is no longer included now. pr_debug is left undefined and the build of perf tool fails on Powerpc. Explicitly include util/debug.h. Signed-off-by: Sukadev Bhattiprolu Acked-by: Jiri Olsa Cc: Jiri Olsa Cc: Michael Ellerman Link: http://lkml.kernel.org/r/20140807072700.GA17623@us.ibm.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/arch/powerpc/util/skip-callchain-idx.c | 1 + 1 file changed, 1 insertion(+) (limited to 'tools') diff --git a/tools/perf/arch/powerpc/util/skip-callchain-idx.c b/tools/perf/arch/powerpc/util/skip-callchain-idx.c index a7c23a4..d73ef8b 100644 --- a/tools/perf/arch/powerpc/util/skip-callchain-idx.c +++ b/tools/perf/arch/powerpc/util/skip-callchain-idx.c @@ -15,6 +15,7 @@ #include "util/thread.h" #include "util/callchain.h" +#include "util/debug.h" /* * When saving the callchain on Power, the kernel conservatively saves -- cgit v1.1 From 36e15dd4027a9b088264758fea292b6e876b5cdd Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Wed, 20 Aug 2014 17:07:58 +0900 Subject: perf hists browser: Get rid of unused 'remaining' variable It seems that the 'remaining' variable is not used by any real code. Signed-off-by: Namhyung Kim Cc: Andi Kleen Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1408522080-26556-4-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/ui/browsers/hists.c | 10 ++-------- 1 file changed, 2 insertions(+), 8 deletions(-) (limited to 'tools') diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c index 4892480..2f34c6b 100644 --- a/tools/perf/ui/browsers/hists.c +++ b/tools/perf/ui/browsers/hists.c @@ -488,14 +488,13 @@ static int hist_browser__show_callchain_node_rb_tree(struct hist_browser *browse { struct rb_node *node; int first_row = row, width, offset = level * LEVEL_OFFSET_STEP; - u64 new_total, remaining; + u64 new_total; if (callchain_param.mode == CHAIN_GRAPH_REL) new_total = chain_node->children_hit; else new_total = total; - remaining = new_total; node = rb_first(&chain_node->rb_root); while (node) { struct callchain_node *child = rb_entry(node, struct callchain_node, rb_node); @@ -506,8 +505,6 @@ static int hist_browser__show_callchain_node_rb_tree(struct hist_browser *browse int first = true; int extra_offset = 0; - remaining -= cumul; - list_for_each_entry(chain, &child->val, list) { char bf[1024], *alloc_str; const char *str; @@ -1084,7 +1081,7 @@ static int hist_browser__fprintf_callchain_node_rb_tree(struct hist_browser *bro { struct rb_node *node; int offset = level * LEVEL_OFFSET_STEP; - u64 new_total, remaining; + u64 new_total; int printed = 0; if (callchain_param.mode == CHAIN_GRAPH_REL) @@ -1092,7 +1089,6 @@ static int hist_browser__fprintf_callchain_node_rb_tree(struct hist_browser *bro else new_total = total; - remaining = new_total; node = rb_first(&chain_node->rb_root); while (node) { struct callchain_node *child = rb_entry(node, struct callchain_node, rb_node); @@ -1103,8 +1099,6 @@ static int hist_browser__fprintf_callchain_node_rb_tree(struct hist_browser *bro int first = true; int extra_offset = 0; - remaining -= cumul; - list_for_each_entry(chain, &child->val, list) { char bf[1024], *alloc_str; const char *str; -- cgit v1.1 From 2bfa152839e5adea66aa6309c94bf3a50a5d5d47 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Wed, 20 Aug 2014 17:07:56 +0900 Subject: perf hists browser: Fix children overhead dump When perf report runs on TUI, 'P' key dumps current screen to a file but it incorrectly displayed children overhead (as same of self overhead). This was because it fetched the value from self stats. Signed-off-by: Namhyung Kim Cc: Andi Kleen Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1408522080-26556-2-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/ui/hist.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/ui/hist.c b/tools/perf/ui/hist.c index b5fa701..75eb6ac 100644 --- a/tools/perf/ui/hist.c +++ b/tools/perf/ui/hist.c @@ -304,7 +304,7 @@ static int hpp__color_##_type(struct perf_hpp_fmt *fmt, \ static int hpp__entry_##_type(struct perf_hpp_fmt *fmt, \ struct perf_hpp *hpp, struct hist_entry *he) \ { \ - return hpp__fmt_acc(fmt, hpp, he, he_get_##_field, " %*.2f%%", \ + return hpp__fmt_acc(fmt, hpp, he, he_get_acc_##_field, " %*.2f%%", \ hpp_entry_scnprintf, true); \ } -- cgit v1.1 From f4536ddd20d93b70d432b7ca5db873525e23c2c4 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Wed, 20 Aug 2014 17:07:57 +0900 Subject: perf hists browser: Factor out hist_browser__show_callchain_entry() Factor out duplicate callchain printing code into the hist_browser__ show_callchain_entry(). Signed-off-by: Namhyung Kim Cc: Andi Kleen Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1408522080-26556-3-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/ui/browsers/hists.c | 64 ++++++++++++++++++++++-------------------- 1 file changed, 33 insertions(+), 31 deletions(-) (limited to 'tools') diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c index 2f34c6b..d42d8a8 100644 --- a/tools/perf/ui/browsers/hists.c +++ b/tools/perf/ui/browsers/hists.c @@ -477,6 +477,29 @@ static char *callchain_list__sym_name(struct callchain_list *cl, return bf; } +static void hist_browser__show_callchain_entry(struct hist_browser *browser, + struct callchain_list *chain, + unsigned short row, int offset, + char folded_sign, const char *str, + bool *is_current_entry) +{ + int color, width; + + color = HE_COLORSET_NORMAL; + width = browser->b.width - (offset + 2); + if (ui_browser__is_current_entry(&browser->b, row)) { + browser->selection = &chain->ms; + color = HE_COLORSET_SELECTED; + *is_current_entry = true; + } + + ui_browser__set_color(&browser->b, color); + hist_browser__gotorc(browser, row, 0); + slsmg_write_nstring(" ", offset); + slsmg_printf("%c ", folded_sign); + slsmg_write_nstring(str, width); +} + #define LEVEL_OFFSET_STEP 3 static int hist_browser__show_callchain_node_rb_tree(struct hist_browser *browser, @@ -487,7 +510,7 @@ static int hist_browser__show_callchain_node_rb_tree(struct hist_browser *browse bool *is_current_entry) { struct rb_node *node; - int first_row = row, width, offset = level * LEVEL_OFFSET_STEP; + int first_row = row, offset = level * LEVEL_OFFSET_STEP; u64 new_total; if (callchain_param.mode == CHAIN_GRAPH_REL) @@ -508,7 +531,6 @@ static int hist_browser__show_callchain_node_rb_tree(struct hist_browser *browse list_for_each_entry(chain, &child->val, list) { char bf[1024], *alloc_str; const char *str; - int color; bool was_first = first; if (first) @@ -534,19 +556,10 @@ static int hist_browser__show_callchain_node_rb_tree(struct hist_browser *browse str = alloc_str; } - color = HE_COLORSET_NORMAL; - width = browser->b.width - (offset + extra_offset + 2); - if (ui_browser__is_current_entry(&browser->b, row)) { - browser->selection = &chain->ms; - color = HE_COLORSET_SELECTED; - *is_current_entry = true; - } - - ui_browser__set_color(&browser->b, color); - hist_browser__gotorc(browser, row, 0); - slsmg_write_nstring(" ", offset + extra_offset); - slsmg_printf("%c ", folded_sign); - slsmg_write_nstring(str, width); + hist_browser__show_callchain_entry(browser, chain, row, + offset + extra_offset, + folded_sign, str, + is_current_entry); free(alloc_str); if (++row == browser->b.rows) @@ -577,14 +590,12 @@ static int hist_browser__show_callchain_node(struct hist_browser *browser, bool *is_current_entry) { struct callchain_list *chain; - int first_row = row, - offset = level * LEVEL_OFFSET_STEP, - width = browser->b.width - offset; + int first_row = row; + int offset = level * LEVEL_OFFSET_STEP; char folded_sign = ' '; list_for_each_entry(chain, &node->val, list) { char bf[1024], *s; - int color; folded_sign = callchain_list__folded(chain); @@ -593,20 +604,11 @@ static int hist_browser__show_callchain_node(struct hist_browser *browser, continue; } - color = HE_COLORSET_NORMAL; - if (ui_browser__is_current_entry(&browser->b, row)) { - browser->selection = &chain->ms; - color = HE_COLORSET_SELECTED; - *is_current_entry = true; - } - s = callchain_list__sym_name(chain, bf, sizeof(bf), browser->show_dso); - hist_browser__gotorc(browser, row, 0); - ui_browser__set_color(&browser->b, color); - slsmg_write_nstring(" ", offset); - slsmg_printf("%c ", folded_sign); - slsmg_write_nstring(s, width - 2); + hist_browser__show_callchain_entry(browser, chain, row, + offset, folded_sign, s, + is_current_entry); if (++row == browser->b.rows) goto out; -- cgit v1.1 From d44bc558297222d9a621fff2eca3f880e91c49f7 Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Fri, 15 Aug 2014 22:08:36 +0300 Subject: perf tests: Add a test for tracking with sched_switch Add a test that checks that sched_switch events and tracking events can be recorded for a workload using the evsel->system_wide and evsel->tracking flags (respectively) with other events sometimes enabled or disabled. Signed-off-by: Adrian Hunter Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1408129739-17368-2-git-send-email-adrian.hunter@intel.com [ Fix build on fedora14 by using a designated initializer for the sched_switch variable ] Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/Makefile.perf | 1 + tools/perf/tests/builtin-test.c | 4 + tools/perf/tests/switch-tracking.c | 572 +++++++++++++++++++++++++++++++++++++ tools/perf/tests/tests.h | 1 + 4 files changed, 578 insertions(+) create mode 100644 tools/perf/tests/switch-tracking.c (limited to 'tools') diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf index 1ea31e2..95e832b 100644 --- a/tools/perf/Makefile.perf +++ b/tools/perf/Makefile.perf @@ -425,6 +425,7 @@ endif endif LIB_OBJS += $(OUTPUT)tests/mmap-thread-lookup.o LIB_OBJS += $(OUTPUT)tests/thread-mg-share.o +LIB_OBJS += $(OUTPUT)tests/switch-tracking.o BUILTIN_OBJS += $(OUTPUT)builtin-annotate.o BUILTIN_OBJS += $(OUTPUT)builtin-bench.o diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c index 9948136..6a4145e 100644 --- a/tools/perf/tests/builtin-test.c +++ b/tools/perf/tests/builtin-test.c @@ -154,6 +154,10 @@ static struct test { .func = test__hists_cumulate, }, { + .desc = "Test tracking with sched_switch", + .func = test__switch_tracking, + }, + { .func = NULL, }, }; diff --git a/tools/perf/tests/switch-tracking.c b/tools/perf/tests/switch-tracking.c new file mode 100644 index 0000000..cc68648 --- /dev/null +++ b/tools/perf/tests/switch-tracking.c @@ -0,0 +1,572 @@ +#include +#include +#include +#include + +#include "parse-events.h" +#include "evlist.h" +#include "evsel.h" +#include "thread_map.h" +#include "cpumap.h" +#include "tests.h" + +static int spin_sleep(void) +{ + struct timeval start, now, diff, maxtime; + struct timespec ts; + int err, i; + + maxtime.tv_sec = 0; + maxtime.tv_usec = 50000; + + err = gettimeofday(&start, NULL); + if (err) + return err; + + /* Spin for 50ms */ + while (1) { + for (i = 0; i < 1000; i++) + barrier(); + + err = gettimeofday(&now, NULL); + if (err) + return err; + + timersub(&now, &start, &diff); + if (timercmp(&diff, &maxtime, > /* For checkpatch */)) + break; + } + + ts.tv_nsec = 50 * 1000 * 1000; + ts.tv_sec = 0; + + /* Sleep for 50ms */ + err = nanosleep(&ts, NULL); + if (err == EINTR) + err = 0; + + return err; +} + +struct switch_tracking { + struct perf_evsel *switch_evsel; + struct perf_evsel *cycles_evsel; + pid_t *tids; + int nr_tids; + int comm_seen[4]; + int cycles_before_comm_1; + int cycles_between_comm_2_and_comm_3; + int cycles_after_comm_4; +}; + +static int check_comm(struct switch_tracking *switch_tracking, + union perf_event *event, const char *comm, int nr) +{ + if (event->header.type == PERF_RECORD_COMM && + (pid_t)event->comm.pid == getpid() && + (pid_t)event->comm.tid == getpid() && + strcmp(event->comm.comm, comm) == 0) { + if (switch_tracking->comm_seen[nr]) { + pr_debug("Duplicate comm event\n"); + return -1; + } + switch_tracking->comm_seen[nr] = 1; + pr_debug3("comm event: %s nr: %d\n", event->comm.comm, nr); + return 1; + } + return 0; +} + +static int check_cpu(struct switch_tracking *switch_tracking, int cpu) +{ + int i, nr = cpu + 1; + + if (cpu < 0) + return -1; + + if (!switch_tracking->tids) { + switch_tracking->tids = calloc(nr, sizeof(pid_t)); + if (!switch_tracking->tids) + return -1; + for (i = 0; i < nr; i++) + switch_tracking->tids[i] = -1; + switch_tracking->nr_tids = nr; + return 0; + } + + if (cpu >= switch_tracking->nr_tids) { + void *addr; + + addr = realloc(switch_tracking->tids, nr * sizeof(pid_t)); + if (!addr) + return -1; + switch_tracking->tids = addr; + for (i = switch_tracking->nr_tids; i < nr; i++) + switch_tracking->tids[i] = -1; + switch_tracking->nr_tids = nr; + return 0; + } + + return 0; +} + +static int process_sample_event(struct perf_evlist *evlist, + union perf_event *event, + struct switch_tracking *switch_tracking) +{ + struct perf_sample sample; + struct perf_evsel *evsel; + pid_t next_tid, prev_tid; + int cpu, err; + + if (perf_evlist__parse_sample(evlist, event, &sample)) { + pr_debug("perf_evlist__parse_sample failed\n"); + return -1; + } + + evsel = perf_evlist__id2evsel(evlist, sample.id); + if (evsel == switch_tracking->switch_evsel) { + next_tid = perf_evsel__intval(evsel, &sample, "next_pid"); + prev_tid = perf_evsel__intval(evsel, &sample, "prev_pid"); + cpu = sample.cpu; + pr_debug3("sched_switch: cpu: %d prev_tid %d next_tid %d\n", + cpu, prev_tid, next_tid); + err = check_cpu(switch_tracking, cpu); + if (err) + return err; + /* + * Check for no missing sched_switch events i.e. that the + * evsel->system_wide flag has worked. + */ + if (switch_tracking->tids[cpu] != -1 && + switch_tracking->tids[cpu] != prev_tid) { + pr_debug("Missing sched_switch events\n"); + return -1; + } + switch_tracking->tids[cpu] = next_tid; + } + + if (evsel == switch_tracking->cycles_evsel) { + pr_debug3("cycles event\n"); + if (!switch_tracking->comm_seen[0]) + switch_tracking->cycles_before_comm_1 = 1; + if (switch_tracking->comm_seen[1] && + !switch_tracking->comm_seen[2]) + switch_tracking->cycles_between_comm_2_and_comm_3 = 1; + if (switch_tracking->comm_seen[3]) + switch_tracking->cycles_after_comm_4 = 1; + } + + return 0; +} + +static int process_event(struct perf_evlist *evlist, union perf_event *event, + struct switch_tracking *switch_tracking) +{ + if (event->header.type == PERF_RECORD_SAMPLE) + return process_sample_event(evlist, event, switch_tracking); + + if (event->header.type == PERF_RECORD_COMM) { + int err, done = 0; + + err = check_comm(switch_tracking, event, "Test COMM 1", 0); + if (err < 0) + return -1; + done += err; + err = check_comm(switch_tracking, event, "Test COMM 2", 1); + if (err < 0) + return -1; + done += err; + err = check_comm(switch_tracking, event, "Test COMM 3", 2); + if (err < 0) + return -1; + done += err; + err = check_comm(switch_tracking, event, "Test COMM 4", 3); + if (err < 0) + return -1; + done += err; + if (done != 1) { + pr_debug("Unexpected comm event\n"); + return -1; + } + } + + return 0; +} + +struct event_node { + struct list_head list; + union perf_event *event; + u64 event_time; +}; + +static int add_event(struct perf_evlist *evlist, struct list_head *events, + union perf_event *event) +{ + struct perf_sample sample; + struct event_node *node; + + node = malloc(sizeof(struct event_node)); + if (!node) { + pr_debug("malloc failed\n"); + return -1; + } + node->event = event; + list_add(&node->list, events); + + if (perf_evlist__parse_sample(evlist, event, &sample)) { + pr_debug("perf_evlist__parse_sample failed\n"); + return -1; + } + + if (!sample.time) { + pr_debug("event with no time\n"); + return -1; + } + + node->event_time = sample.time; + + return 0; +} + +static void free_event_nodes(struct list_head *events) +{ + struct event_node *node; + + while (!list_empty(events)) { + node = list_entry(events->next, struct event_node, list); + list_del(&node->list); + free(node); + } +} + +static int compar(const void *a, const void *b) +{ + const struct event_node *nodea = a; + const struct event_node *nodeb = b; + s64 cmp = nodea->event_time - nodeb->event_time; + + return cmp; +} + +static int process_events(struct perf_evlist *evlist, + struct switch_tracking *switch_tracking) +{ + union perf_event *event; + unsigned pos, cnt = 0; + LIST_HEAD(events); + struct event_node *events_array, *node; + int i, ret; + + for (i = 0; i < evlist->nr_mmaps; i++) { + while ((event = perf_evlist__mmap_read(evlist, i)) != NULL) { + cnt += 1; + ret = add_event(evlist, &events, event); + perf_evlist__mmap_consume(evlist, i); + if (ret < 0) + goto out_free_nodes; + } + } + + events_array = calloc(cnt, sizeof(struct event_node)); + if (!events_array) { + pr_debug("calloc failed\n"); + ret = -1; + goto out_free_nodes; + } + + pos = 0; + list_for_each_entry(node, &events, list) + events_array[pos++] = *node; + + qsort(events_array, cnt, sizeof(struct event_node), compar); + + for (pos = 0; pos < cnt; pos++) { + ret = process_event(evlist, events_array[pos].event, + switch_tracking); + if (ret < 0) + goto out_free; + } + + ret = 0; +out_free: + pr_debug("%u events recorded\n", cnt); + free(events_array); +out_free_nodes: + free_event_nodes(&events); + return ret; +} + +/** + * test__switch_tracking - test using sched_switch and tracking events. + * + * This function implements a test that checks that sched_switch events and + * tracking events can be recorded for a workload (current process) using the + * evsel->system_wide and evsel->tracking flags (respectively) with other events + * sometimes enabled or disabled. + */ +int test__switch_tracking(void) +{ + const char *sched_switch = "sched:sched_switch"; + struct switch_tracking switch_tracking = { .tids = NULL, }; + struct record_opts opts = { + .mmap_pages = UINT_MAX, + .user_freq = UINT_MAX, + .user_interval = ULLONG_MAX, + .freq = 4000, + .target = { + .uses_mmap = true, + }, + }; + struct thread_map *threads = NULL; + struct cpu_map *cpus = NULL; + struct perf_evlist *evlist = NULL; + struct perf_evsel *evsel, *cpu_clocks_evsel, *cycles_evsel; + struct perf_evsel *switch_evsel, *tracking_evsel; + const char *comm; + int err = -1; + + threads = thread_map__new(-1, getpid(), UINT_MAX); + if (!threads) { + pr_debug("thread_map__new failed!\n"); + goto out_err; + } + + cpus = cpu_map__new(NULL); + if (!cpus) { + pr_debug("cpu_map__new failed!\n"); + goto out_err; + } + + evlist = perf_evlist__new(); + if (!evlist) { + pr_debug("perf_evlist__new failed!\n"); + goto out_err; + } + + perf_evlist__set_maps(evlist, cpus, threads); + + /* First event */ + err = parse_events(evlist, "cpu-clock:u"); + if (err) { + pr_debug("Failed to parse event dummy:u\n"); + goto out_err; + } + + cpu_clocks_evsel = perf_evlist__last(evlist); + + /* Second event */ + err = parse_events(evlist, "cycles:u"); + if (err) { + pr_debug("Failed to parse event cycles:u\n"); + goto out_err; + } + + cycles_evsel = perf_evlist__last(evlist); + + /* Third event */ + if (!perf_evlist__can_select_event(evlist, sched_switch)) { + fprintf(stderr, " (no sched_switch)"); + err = 0; + goto out; + } + + err = parse_events(evlist, sched_switch); + if (err) { + pr_debug("Failed to parse event %s\n", sched_switch); + goto out_err; + } + + switch_evsel = perf_evlist__last(evlist); + + perf_evsel__set_sample_bit(switch_evsel, CPU); + perf_evsel__set_sample_bit(switch_evsel, TIME); + + switch_evsel->system_wide = true; + switch_evsel->no_aux_samples = true; + switch_evsel->immediate = true; + + /* Test moving an event to the front */ + if (cycles_evsel == perf_evlist__first(evlist)) { + pr_debug("cycles event already at front"); + goto out_err; + } + perf_evlist__to_front(evlist, cycles_evsel); + if (cycles_evsel != perf_evlist__first(evlist)) { + pr_debug("Failed to move cycles event to front"); + goto out_err; + } + + perf_evsel__set_sample_bit(cycles_evsel, CPU); + perf_evsel__set_sample_bit(cycles_evsel, TIME); + + /* Fourth event */ + err = parse_events(evlist, "dummy:u"); + if (err) { + pr_debug("Failed to parse event dummy:u\n"); + goto out_err; + } + + tracking_evsel = perf_evlist__last(evlist); + + perf_evlist__set_tracking_event(evlist, tracking_evsel); + + tracking_evsel->attr.freq = 0; + tracking_evsel->attr.sample_period = 1; + + perf_evsel__set_sample_bit(tracking_evsel, TIME); + + /* Config events */ + perf_evlist__config(evlist, &opts); + + /* Check moved event is still at the front */ + if (cycles_evsel != perf_evlist__first(evlist)) { + pr_debug("Front event no longer at front"); + goto out_err; + } + + /* Check tracking event is tracking */ + if (!tracking_evsel->attr.mmap || !tracking_evsel->attr.comm) { + pr_debug("Tracking event not tracking\n"); + goto out_err; + } + + /* Check non-tracking events are not tracking */ + evlist__for_each(evlist, evsel) { + if (evsel != tracking_evsel) { + if (evsel->attr.mmap || evsel->attr.comm) { + pr_debug("Non-tracking event is tracking\n"); + goto out_err; + } + } + } + + if (perf_evlist__open(evlist) < 0) { + fprintf(stderr, " (not supported)"); + err = 0; + goto out; + } + + err = perf_evlist__mmap(evlist, UINT_MAX, false); + if (err) { + pr_debug("perf_evlist__mmap failed!\n"); + goto out_err; + } + + perf_evlist__enable(evlist); + + err = perf_evlist__disable_event(evlist, cpu_clocks_evsel); + if (err) { + pr_debug("perf_evlist__disable_event failed!\n"); + goto out_err; + } + + err = spin_sleep(); + if (err) { + pr_debug("spin_sleep failed!\n"); + goto out_err; + } + + comm = "Test COMM 1"; + err = prctl(PR_SET_NAME, (unsigned long)comm, 0, 0, 0); + if (err) { + pr_debug("PR_SET_NAME failed!\n"); + goto out_err; + } + + err = perf_evlist__disable_event(evlist, cycles_evsel); + if (err) { + pr_debug("perf_evlist__disable_event failed!\n"); + goto out_err; + } + + comm = "Test COMM 2"; + err = prctl(PR_SET_NAME, (unsigned long)comm, 0, 0, 0); + if (err) { + pr_debug("PR_SET_NAME failed!\n"); + goto out_err; + } + + err = spin_sleep(); + if (err) { + pr_debug("spin_sleep failed!\n"); + goto out_err; + } + + comm = "Test COMM 3"; + err = prctl(PR_SET_NAME, (unsigned long)comm, 0, 0, 0); + if (err) { + pr_debug("PR_SET_NAME failed!\n"); + goto out_err; + } + + err = perf_evlist__enable_event(evlist, cycles_evsel); + if (err) { + pr_debug("perf_evlist__disable_event failed!\n"); + goto out_err; + } + + comm = "Test COMM 4"; + err = prctl(PR_SET_NAME, (unsigned long)comm, 0, 0, 0); + if (err) { + pr_debug("PR_SET_NAME failed!\n"); + goto out_err; + } + + err = spin_sleep(); + if (err) { + pr_debug("spin_sleep failed!\n"); + goto out_err; + } + + perf_evlist__disable(evlist); + + switch_tracking.switch_evsel = switch_evsel; + switch_tracking.cycles_evsel = cycles_evsel; + + err = process_events(evlist, &switch_tracking); + + zfree(&switch_tracking.tids); + + if (err) + goto out_err; + + /* Check all 4 comm events were seen i.e. that evsel->tracking works */ + if (!switch_tracking.comm_seen[0] || !switch_tracking.comm_seen[1] || + !switch_tracking.comm_seen[2] || !switch_tracking.comm_seen[3]) { + pr_debug("Missing comm events\n"); + goto out_err; + } + + /* Check cycles event got enabled */ + if (!switch_tracking.cycles_before_comm_1) { + pr_debug("Missing cycles events\n"); + goto out_err; + } + + /* Check cycles event got disabled */ + if (switch_tracking.cycles_between_comm_2_and_comm_3) { + pr_debug("cycles events even though event was disabled\n"); + goto out_err; + } + + /* Check cycles event got enabled again */ + if (!switch_tracking.cycles_after_comm_4) { + pr_debug("Missing cycles events\n"); + goto out_err; + } +out: + if (evlist) { + perf_evlist__disable(evlist); + perf_evlist__delete(evlist); + } else { + cpu_map__delete(cpus); + thread_map__delete(threads); + } + + return err; + +out_err: + err = -1; + goto out; +} diff --git a/tools/perf/tests/tests.h b/tools/perf/tests/tests.h index ed64790..be8be10 100644 --- a/tools/perf/tests/tests.h +++ b/tools/perf/tests/tests.h @@ -48,6 +48,7 @@ int test__mmap_thread_lookup(void); int test__thread_mg_share(void); int test__hists_output(void); int test__hists_cumulate(void); +int test__switch_tracking(void); #if defined(__x86_64__) || defined(__i386__) || defined(__arm__) #ifdef HAVE_DWARF_UNWIND_SUPPORT -- cgit v1.1 From d445dd2a78eed884adf3b3426b078fe69d2516d8 Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Fri, 15 Aug 2014 22:08:37 +0300 Subject: perf scripting: Add 'flush' callback to scripting API In order to defer some output via the scripting API, there needs to be a callback after session processing but before the session is deleted. Signed-off-by: Adrian Hunter Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1408129739-17368-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-script.c | 13 +++++++++++++ tools/perf/util/scripting-engines/trace-event-perl.c | 6 ++++++ tools/perf/util/scripting-engines/trace-event-python.c | 6 ++++++ tools/perf/util/trace-event-scripting.c | 7 +++++++ tools/perf/util/trace-event.h | 1 + 5 files changed, 33 insertions(+) (limited to 'tools') diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c index c1b7029..02dce92 100644 --- a/tools/perf/builtin-script.c +++ b/tools/perf/builtin-script.c @@ -485,6 +485,11 @@ static int default_start_script(const char *script __maybe_unused, return 0; } +static int default_flush_script(void) +{ + return 0; +} + static int default_stop_script(void) { return 0; @@ -498,6 +503,7 @@ static int default_generate_script(struct pevent *pevent __maybe_unused, static struct scripting_ops default_scripting_ops = { .start_script = default_start_script, + .flush_script = default_flush_script, .stop_script = default_stop_script, .process_event = process_event, .generate_script = default_generate_script, @@ -513,6 +519,11 @@ static void setup_scripting(void) scripting_ops = &default_scripting_ops; } +static int flush_scripting(void) +{ + return scripting_ops->flush_script(); +} + static int cleanup_scripting(void) { pr_debug("\nperf script stopped\n"); @@ -1813,6 +1824,8 @@ int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused) err = __cmd_script(&script); + flush_scripting(); + out_delete: perf_session__delete(session); diff --git a/tools/perf/util/scripting-engines/trace-event-perl.c b/tools/perf/util/scripting-engines/trace-event-perl.c index b2dba9c..0a01bac 100644 --- a/tools/perf/util/scripting-engines/trace-event-perl.c +++ b/tools/perf/util/scripting-engines/trace-event-perl.c @@ -432,6 +432,11 @@ error: return err; } +static int perl_flush_script(void) +{ + return 0; +} + /* * Stop trace script */ @@ -633,6 +638,7 @@ static int perl_generate_script(struct pevent *pevent, const char *outfile) struct scripting_ops perl_scripting_ops = { .name = "Perl", .start_script = perl_start_script, + .flush_script = perl_flush_script, .stop_script = perl_stop_script, .process_event = perl_process_event, .generate_script = perl_generate_script, diff --git a/tools/perf/util/scripting-engines/trace-event-python.c b/tools/perf/util/scripting-engines/trace-event-python.c index 26e5f142..56ba07c 100644 --- a/tools/perf/util/scripting-engines/trace-event-python.c +++ b/tools/perf/util/scripting-engines/trace-event-python.c @@ -639,6 +639,11 @@ error: return err; } +static int python_flush_script(void) +{ + return 0; +} + /* * Stop trace script */ @@ -823,6 +828,7 @@ static int python_generate_script(struct pevent *pevent, const char *outfile) struct scripting_ops python_scripting_ops = { .name = "Python", .start_script = python_start_script, + .flush_script = python_flush_script, .stop_script = python_stop_script, .process_event = python_process_event, .generate_script = python_generate_script, diff --git a/tools/perf/util/trace-event-scripting.c b/tools/perf/util/trace-event-scripting.c index 57aaccc..5c9bdd1 100644 --- a/tools/perf/util/trace-event-scripting.c +++ b/tools/perf/util/trace-event-scripting.c @@ -30,6 +30,11 @@ struct scripting_context *scripting_context; +static int flush_script_unsupported(void) +{ + return 0; +} + static int stop_script_unsupported(void) { return 0; @@ -74,6 +79,7 @@ static int python_generate_script_unsupported(struct pevent *pevent struct scripting_ops python_scripting_unsupported_ops = { .name = "Python", .start_script = python_start_script_unsupported, + .flush_script = flush_script_unsupported, .stop_script = stop_script_unsupported, .process_event = process_event_unsupported, .generate_script = python_generate_script_unsupported, @@ -137,6 +143,7 @@ static int perl_generate_script_unsupported(struct pevent *pevent struct scripting_ops perl_scripting_unsupported_ops = { .name = "Perl", .start_script = perl_start_script_unsupported, + .flush_script = flush_script_unsupported, .stop_script = stop_script_unsupported, .process_event = process_event_unsupported, .generate_script = perl_generate_script_unsupported, diff --git a/tools/perf/util/trace-event.h b/tools/perf/util/trace-event.h index 7b6d686..52aaa19 100644 --- a/tools/perf/util/trace-event.h +++ b/tools/perf/util/trace-event.h @@ -64,6 +64,7 @@ struct perf_session; struct scripting_ops { const char *name; int (*start_script) (const char *script, int argc, const char **argv); + int (*flush_script) (void); int (*stop_script) (void); void (*process_event) (union perf_event *event, struct perf_sample *sample, -- cgit v1.1 From 4b99375b38fa137f501cfa60b70e3f0a9da39c93 Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Fri, 15 Aug 2014 22:08:38 +0300 Subject: perf machine: Rename machine__get_kernel_start_addr() method Rename machine__get_kernel_start_addr() to machine__get_running_kernel_start() so that a new function, with a similar name to the original name, can be added that gets the kernel start address from the kernel map. Signed-off-by: Adrian Hunter Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1408129739-17368-4-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/machine.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c index b093b93..37f8dc5 100644 --- a/tools/perf/util/machine.c +++ b/tools/perf/util/machine.c @@ -593,8 +593,8 @@ const char *ref_reloc_sym_names[] = {"_text", "_stext", NULL}; * Returns the name of the start symbol in *symbol_name. Pass in NULL as * symbol_name if it's not that important. */ -static u64 machine__get_kernel_start_addr(struct machine *machine, - const char **symbol_name) +static u64 machine__get_running_kernel_start(struct machine *machine, + const char **symbol_name) { char filename[PATH_MAX]; int i; @@ -621,7 +621,7 @@ static u64 machine__get_kernel_start_addr(struct machine *machine, int __machine__create_kernel_maps(struct machine *machine, struct dso *kernel) { enum map_type type; - u64 start = machine__get_kernel_start_addr(machine, NULL); + u64 start = machine__get_running_kernel_start(machine, NULL); for (type = 0; type < MAP__NR_TYPES; ++type) { struct kmap *kmap; @@ -940,7 +940,7 @@ int machine__create_kernel_maps(struct machine *machine) { struct dso *kernel = machine__get_kernel(machine); const char *name; - u64 addr = machine__get_kernel_start_addr(machine, &name); + u64 addr = machine__get_running_kernel_start(machine, &name); if (!addr) return -1; -- cgit v1.1 From fbe2af45f6bd27ee69fd775303c936c3af4a4807 Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Fri, 15 Aug 2014 22:08:39 +0300 Subject: perf tools: Add machine__kernel_ip() Add a function to determine if an address is in the kernel. This is based on the kernel function kernel_ip(). Signed-off-by: Adrian Hunter Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1408129739-17368-5-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/event.c | 6 +++--- tools/perf/util/machine.c | 23 +++++++++++++++++++++++ tools/perf/util/machine.h | 17 +++++++++++++++++ 3 files changed, 43 insertions(+), 3 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c index 1398c83..ed55819 100644 --- a/tools/perf/util/event.c +++ b/tools/perf/util/event.c @@ -784,9 +784,9 @@ try_again: * "[vdso]" dso, but for now lets use the old trick of looking * in the whole kernel symbol list. */ - if ((long long)al->addr < 0 && - cpumode == PERF_RECORD_MISC_USER && - machine && mg != &machine->kmaps) { + if (cpumode == PERF_RECORD_MISC_USER && machine && + mg != &machine->kmaps && + machine__kernel_ip(machine, al->addr)) { mg = &machine->kmaps; load_map = true; goto try_again; diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c index 37f8dc5..e00daf0 100644 --- a/tools/perf/util/machine.c +++ b/tools/perf/util/machine.c @@ -32,6 +32,7 @@ int machine__init(struct machine *machine, const char *root_dir, pid_t pid) machine->symbol_filter = NULL; machine->id_hdr_size = 0; machine->comm_exec = false; + machine->kernel_start = 0; machine->root_dir = strdup(root_dir); if (machine->root_dir == NULL) @@ -1559,3 +1560,25 @@ int machine__set_current_tid(struct machine *machine, int cpu, pid_t pid, return 0; } + +int machine__get_kernel_start(struct machine *machine) +{ + struct map *map = machine__kernel_map(machine, MAP__FUNCTION); + int err = 0; + + /* + * The only addresses above 2^63 are kernel addresses of a 64-bit + * kernel. Note that addresses are unsigned so that on a 32-bit system + * all addresses including kernel addresses are less than 2^32. In + * that case (32-bit system), if the kernel mapping is unknown, all + * addresses will be assumed to be in user space - see + * machine__kernel_ip(). + */ + machine->kernel_start = 1ULL << 63; + if (map) { + err = map__load(map, machine->symbol_filter); + if (map->start) + machine->kernel_start = map->start; + } + return err; +} diff --git a/tools/perf/util/machine.h b/tools/perf/util/machine.h index 61216e0..6a6bcc1 100644 --- a/tools/perf/util/machine.h +++ b/tools/perf/util/machine.h @@ -36,6 +36,7 @@ struct machine { struct list_head kernel_dsos; struct map_groups kmaps; struct map *vmlinux_maps[MAP__NR_TYPES]; + u64 kernel_start; symbol_filter_t symbol_filter; pid_t *current_tid; }; @@ -46,6 +47,22 @@ struct map *machine__kernel_map(struct machine *machine, enum map_type type) return machine->vmlinux_maps[type]; } +int machine__get_kernel_start(struct machine *machine); + +static inline u64 machine__kernel_start(struct machine *machine) +{ + if (!machine->kernel_start) + machine__get_kernel_start(machine); + return machine->kernel_start; +} + +static inline bool machine__kernel_ip(struct machine *machine, u64 ip) +{ + u64 kernel_start = machine__kernel_start(machine); + + return ip >= kernel_start; +} + struct thread *machine__find_thread(struct machine *machine, pid_t pid, pid_t tid); struct comm *machine__thread_exec_comm(struct machine *machine, -- cgit v1.1 From c09a7e755c025558cb882fa20a5f30da738536fa Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Thu, 21 Aug 2014 10:15:45 +0900 Subject: perf hists browser: Cleanup callchain print functions The hist_browser__show_callchain() and friends don't need to be that complex. They're splitted in 3 pieces - one for traversing top-level tree, other one for special casing first chains in the top-level entries, and last one for recursive traversing inner trees. It led to code duplication and unnecessary complexity IMHO. Simplify the function and consolidate the logic into a single function - it can recursively call itself. A little difference in printing callchains in top-level tree can be handled with a small change. It should have no functional change. Signed-off-by: Namhyung Kim Acked-by: Jiri Olsa Cc: Andi Kleen Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1408583746-5540-2-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/ui/browsers/hists.c | 112 +++++++++++------------------------------ 1 file changed, 29 insertions(+), 83 deletions(-) (limited to 'tools') diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c index d42d8a8..519353d 100644 --- a/tools/perf/ui/browsers/hists.c +++ b/tools/perf/ui/browsers/hists.c @@ -502,23 +502,16 @@ static void hist_browser__show_callchain_entry(struct hist_browser *browser, #define LEVEL_OFFSET_STEP 3 -static int hist_browser__show_callchain_node_rb_tree(struct hist_browser *browser, - struct callchain_node *chain_node, - u64 total, int level, - unsigned short row, - off_t *row_offset, - bool *is_current_entry) +static int hist_browser__show_callchain(struct hist_browser *browser, + struct rb_root *root, int level, + unsigned short row, off_t *row_offset, + u64 total, bool *is_current_entry) { struct rb_node *node; int first_row = row, offset = level * LEVEL_OFFSET_STEP; u64 new_total; - if (callchain_param.mode == CHAIN_GRAPH_REL) - new_total = chain_node->children_hit; - else - new_total = total; - - node = rb_first(&chain_node->rb_root); + node = rb_first(root); while (node) { struct callchain_node *child = rb_entry(node, struct callchain_node, rb_node); struct rb_node *next = rb_next(node); @@ -535,7 +528,7 @@ static int hist_browser__show_callchain_node_rb_tree(struct hist_browser *browse if (first) first = false; - else + else if (level > 1) extra_offset = LEVEL_OFFSET_STEP; folded_sign = callchain_list__folded(chain); @@ -547,8 +540,9 @@ static int hist_browser__show_callchain_node_rb_tree(struct hist_browser *browse alloc_str = NULL; str = callchain_list__sym_name(chain, bf, sizeof(bf), browser->show_dso); - if (was_first) { - double percent = cumul * 100.0 / new_total; + + if (was_first && level > 1) { + double percent = cumul * 100.0 / total; if (asprintf(&alloc_str, "%2.2f%% %s", percent, str) < 0) str = "Not enough memory!"; @@ -571,78 +565,23 @@ do_next: if (folded_sign == '-') { const int new_level = level + (extra_offset ? 2 : 1); - row += hist_browser__show_callchain_node_rb_tree(browser, child, new_total, - new_level, row, row_offset, - is_current_entry); - } - if (row == browser->b.rows) - goto out; - node = next; - } -out: - return row - first_row; -} - -static int hist_browser__show_callchain_node(struct hist_browser *browser, - struct callchain_node *node, - int level, unsigned short row, - off_t *row_offset, - bool *is_current_entry) -{ - struct callchain_list *chain; - int first_row = row; - int offset = level * LEVEL_OFFSET_STEP; - char folded_sign = ' '; - - list_for_each_entry(chain, &node->val, list) { - char bf[1024], *s; - folded_sign = callchain_list__folded(chain); + if (callchain_param.mode == CHAIN_GRAPH_REL) + new_total = child->children_hit; + else + new_total = total; - if (*row_offset != 0) { - --*row_offset; - continue; + row += hist_browser__show_callchain(browser, &child->rb_root, + new_level, + row, row_offset, + new_total, + is_current_entry); } - - s = callchain_list__sym_name(chain, bf, sizeof(bf), - browser->show_dso); - hist_browser__show_callchain_entry(browser, chain, row, - offset, folded_sign, s, - is_current_entry); - - if (++row == browser->b.rows) - goto out; - } - - if (folded_sign == '-') - row += hist_browser__show_callchain_node_rb_tree(browser, node, - browser->hists->stats.total_period, - level + 1, row, - row_offset, - is_current_entry); -out: - return row - first_row; -} - -static int hist_browser__show_callchain(struct hist_browser *browser, - struct rb_root *chain, - int level, unsigned short row, - off_t *row_offset, - bool *is_current_entry) -{ - struct rb_node *nd; - int first_row = row; - - for (nd = rb_first(chain); nd; nd = rb_next(nd)) { - struct callchain_node *node = rb_entry(nd, struct callchain_node, rb_node); - - row += hist_browser__show_callchain_node(browser, node, level, - row, row_offset, - is_current_entry); if (row == browser->b.rows) break; + node = next; } - +out: return row - first_row; } @@ -817,9 +756,16 @@ static int hist_browser__show_entry(struct hist_browser *browser, --row_offset; if (folded_sign == '-' && row != browser->b.rows) { - printed += hist_browser__show_callchain(browser, &entry->sorted_chain, + u64 total = hists__total_period(entry->hists); + + if (symbol_conf.cumulate_callchain) + total = entry->stat_acc->period; + + printed += hist_browser__show_callchain(browser, + &entry->sorted_chain, 1, row, &row_offset, - ¤t_entry); + total, ¤t_entry); + if (current_entry) browser->he_selection = entry; } -- cgit v1.1 From 06b2afc0b9a26e7673856a24ab57bfb307dad394 Mon Sep 17 00:00:00 2001 From: Don Zickus Date: Wed, 20 Aug 2014 23:25:11 -0400 Subject: perf machine: Fallback to MAP__FUNCTION if daddr maps are NULL As we run "perf c2c" on more applications, we noticed we're missing significant samples from a common customer's application. Looking at the /proc//maps file for the app, we see "rwxs" and "rwxp" permissions on many of the shared memory & heap regions, and on all the thread stacks. Because those regions have the "x" bit set, perf marks them with a MAP_FUNCTION type. Hence ip_resolve_data() never finds load or store events coming from them. We fixed this by re-calling thread__find_addr_location with MAP__FUNCTION in the case where map is NULL as a last ditch effort to map the sample before giving up and dropping it. Reported-by: Joe Mario Tested-by: Joe Mario Signed-off-by: Don Zickus Acked-by: Jiri Olsa Cc: Jiri Olsa Cc: Joe Mario Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1408591511-57884-1-git-send-email-dzickus@redhat.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/machine.c | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'tools') diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c index e00daf0..b2ec38b 100644 --- a/tools/perf/util/machine.c +++ b/tools/perf/util/machine.c @@ -1314,6 +1314,16 @@ static void ip__resolve_data(struct machine *machine, struct thread *thread, thread__find_addr_location(thread, machine, m, MAP__VARIABLE, addr, &al); + if (al.map == NULL) { + /* + * some shared data regions have execute bit set which puts + * their mapping in the MAP__FUNCTION type array. + * Check there as a fallback option before dropping the sample. + */ + thread__find_addr_location(thread, machine, m, MAP__FUNCTION, addr, + &al); + } + ams->addr = addr; ams->al_addr = al.addr; ams->sym = al.sym; -- cgit v1.1 From 3969cc094a9dbb40e624b259caa73c7a2056b249 Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Fri, 15 Aug 2014 16:24:45 -0300 Subject: perf top: Use set_term_quiet() instead of open coded equivalent Signed-off-by: Jiri Olsa Cc: Adrian Hunter Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jean Pihet Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/n/tip-h7n9te70flmaqfnj6l06ay6r@git.kernel.org [ Yanked this out of a patch containing this and some other change ] Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-top.c | 9 ++------- 1 file changed, 2 insertions(+), 7 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index a77ff6c..9848e27 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -433,18 +433,13 @@ static bool perf_top__handle_keypress(struct perf_top *top, int c) if (!perf_top__key_mapped(top, c)) { struct pollfd stdin_poll = { .fd = 0, .events = POLLIN }; - struct termios tc, save; + struct termios save; perf_top__print_mapped_keys(top); fprintf(stdout, "\nEnter selection, or unmapped key to continue: "); fflush(stdout); - tcgetattr(0, &save); - tc = save; - tc.c_lflag &= ~(ICANON | ECHO); - tc.c_cc[VMIN] = 0; - tc.c_cc[VTIME] = 0; - tcsetattr(0, TCSANOW, &tc); + set_term_quiet_input(&save); poll(&stdin_poll, 1, -1); c = getc(stdin); -- cgit v1.1 From 2f3f9bcf000b2043a480e7cc0cae582559fb0f13 Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Fri, 22 Aug 2014 15:58:38 +0200 Subject: perf tools: Add +field argument support for --field option Adding support to add field(s) to default field order via using the '+' prefix, like for report: $ perf report Samples: 10 of event 'cycles', Event count (approx.): 4463799 Overhead Command Shared Object Symbol 32.40% ls [kernel.kallsyms] [k] filemap_fault 28.19% ls [kernel.kallsyms] [k] get_page_from_freelist 23.38% ls [kernel.kallsyms] [k] enqueue_entity 15.04% ls [kernel.kallsyms] [k] mmap_region $ perf report -F +period,sample Samples: 10 of event 'cycles', Event count (approx.): 4463799 Overhead Period Samples Command Shared Object Symbol 32.40% 1446493 1 ls [kernel.kallsyms] [k] filemap_fault 28.19% 1258486 1 ls [kernel.kallsyms] [k] get_page_from_freelist 23.38% 1043754 1 ls [kernel.kallsyms] [k] enqueue_entity 15.04% 671160 1 ls [kernel.kallsyms] [k] mmap_region Works in general for commands using --field option. Signed-off-by: Jiri Olsa Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jean Pihet Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1408715919-25990-2-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/ui/hist.c | 4 ++-- tools/perf/util/sort.c | 24 +++++++++++++++++++----- tools/perf/util/sort.h | 1 + 3 files changed, 22 insertions(+), 7 deletions(-) (limited to 'tools') diff --git a/tools/perf/ui/hist.c b/tools/perf/ui/hist.c index 75eb6ac..2af1837 100644 --- a/tools/perf/ui/hist.c +++ b/tools/perf/ui/hist.c @@ -452,7 +452,7 @@ void perf_hpp__init(void) /* * If user specified field order, no need to setup default fields. */ - if (field_order) + if (is_strict_order(field_order)) return; if (symbol_conf.cumulate_callchain) { @@ -519,7 +519,7 @@ void perf_hpp__column_disable(unsigned col) void perf_hpp__cancel_cumulate(void) { - if (field_order) + if (is_strict_order(field_order)) return; perf_hpp__column_disable(PERF_HPP__OVERHEAD_ACC); diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c index b4a805e..1958637 100644 --- a/tools/perf/util/sort.c +++ b/tools/perf/util/sort.c @@ -1453,7 +1453,7 @@ static int __setup_sorting(void) int ret = 0; if (sort_keys == NULL) { - if (field_order) { + if (is_strict_order(field_order)) { /* * If user specified field order but no sort order, * we'll honor it and not add default sort orders. @@ -1639,23 +1639,36 @@ static void reset_dimensions(void) memory_sort_dimensions[i].taken = 0; } +bool is_strict_order(const char *order) +{ + return order && (*order != '+'); +} + static int __setup_output_field(void) { - char *tmp, *tok, *str; - int ret = 0; + char *tmp, *tok, *str, *strp; + int ret = -EINVAL; if (field_order == NULL) return 0; reset_dimensions(); - str = strdup(field_order); + strp = str = strdup(field_order); if (str == NULL) { error("Not enough memory to setup output fields"); return -ENOMEM; } - for (tok = strtok_r(str, ", ", &tmp); + if (!is_strict_order(field_order)) + strp++; + + if (!strlen(strp)) { + error("Invalid --fields key: `+'"); + goto out; + } + + for (tok = strtok_r(strp, ", ", &tmp); tok; tok = strtok_r(NULL, ", ", &tmp)) { ret = output_field_add(tok); if (ret == -EINVAL) { @@ -1667,6 +1680,7 @@ static int __setup_output_field(void) } } +out: free(str); return ret; } diff --git a/tools/perf/util/sort.h b/tools/perf/util/sort.h index 041f0c9..c03e4ff 100644 --- a/tools/perf/util/sort.h +++ b/tools/perf/util/sort.h @@ -218,4 +218,5 @@ void perf_hpp__set_elide(int idx, bool elide); int report_parse_ignore_callees_opt(const struct option *opt, const char *arg, int unset); +bool is_strict_order(const char *order); #endif /* __PERF_SORT_H */ -- cgit v1.1 From 39ee533fcc7feb5b7938a3973a2bf5ad79bb595b Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Fri, 22 Aug 2014 09:13:21 +0900 Subject: perf hists browser: Consolidate callchain print functions in TUI Currently there're two callchain print functions in TUI - one for the hists browser and another for file dump. They do almost same job so it'd be better consolidate the codes. To do that, provide two callbacks to the generic logic - one for printing and another for checking whether it should stop. Signed-off-by: Namhyung Kim Cc: Andi Kleen Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1408666401-594-1-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/ui/browsers/hists.c | 203 ++++++++++++++++------------------------- 1 file changed, 80 insertions(+), 123 deletions(-) (limited to 'tools') diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c index 519353d..d4cef68 100644 --- a/tools/perf/ui/browsers/hists.c +++ b/tools/perf/ui/browsers/hists.c @@ -477,20 +477,37 @@ static char *callchain_list__sym_name(struct callchain_list *cl, return bf; } +struct callchain_print_arg { + /* for hists browser */ + off_t row_offset; + bool is_current_entry; + + /* for file dump */ + FILE *fp; + int printed; +}; + +typedef void (*print_callchain_entry_fn)(struct hist_browser *browser, + struct callchain_list *chain, + const char *str, int offset, + unsigned short row, + struct callchain_print_arg *arg); + static void hist_browser__show_callchain_entry(struct hist_browser *browser, struct callchain_list *chain, - unsigned short row, int offset, - char folded_sign, const char *str, - bool *is_current_entry) + const char *str, int offset, + unsigned short row, + struct callchain_print_arg *arg) { int color, width; + char folded_sign = callchain_list__folded(chain); color = HE_COLORSET_NORMAL; width = browser->b.width - (offset + 2); if (ui_browser__is_current_entry(&browser->b, row)) { browser->selection = &chain->ms; color = HE_COLORSET_SELECTED; - *is_current_entry = true; + arg->is_current_entry = true; } ui_browser__set_color(&browser->b, color); @@ -500,12 +517,41 @@ static void hist_browser__show_callchain_entry(struct hist_browser *browser, slsmg_write_nstring(str, width); } +static void hist_browser__fprintf_callchain_entry(struct hist_browser *b __maybe_unused, + struct callchain_list *chain, + const char *str, int offset, + unsigned short row __maybe_unused, + struct callchain_print_arg *arg) +{ + char folded_sign = callchain_list__folded(chain); + + arg->printed += fprintf(arg->fp, "%*s%c %s\n", offset, " ", + folded_sign, str); +} + +typedef bool (*check_output_full_fn)(struct hist_browser *browser, + unsigned short row); + +static bool hist_browser__check_output_full(struct hist_browser *browser, + unsigned short row) +{ + return browser->b.rows == row; +} + +static bool hist_browser__check_dump_full(struct hist_browser *browser __maybe_unused, + unsigned short row __maybe_unused) +{ + return false; +} + #define LEVEL_OFFSET_STEP 3 static int hist_browser__show_callchain(struct hist_browser *browser, struct rb_root *root, int level, - unsigned short row, off_t *row_offset, - u64 total, bool *is_current_entry) + unsigned short row, u64 total, + print_callchain_entry_fn print, + struct callchain_print_arg *arg, + check_output_full_fn is_output_full) { struct rb_node *node; int first_row = row, offset = level * LEVEL_OFFSET_STEP; @@ -532,8 +578,8 @@ static int hist_browser__show_callchain(struct hist_browser *browser, extra_offset = LEVEL_OFFSET_STEP; folded_sign = callchain_list__folded(chain); - if (*row_offset != 0) { - --*row_offset; + if (arg->row_offset != 0) { + arg->row_offset--; goto do_next; } @@ -550,13 +596,11 @@ static int hist_browser__show_callchain(struct hist_browser *browser, str = alloc_str; } - hist_browser__show_callchain_entry(browser, chain, row, - offset + extra_offset, - folded_sign, str, - is_current_entry); + print(browser, chain, str, offset + extra_offset, row, arg); + free(alloc_str); - if (++row == browser->b.rows) + if (is_output_full(browser, ++row)) goto out; do_next: if (folded_sign == '+') @@ -572,12 +616,10 @@ do_next: new_total = total; row += hist_browser__show_callchain(browser, &child->rb_root, - new_level, - row, row_offset, - new_total, - is_current_entry); + new_level, row, new_total, + print, arg, is_output_full); } - if (row == browser->b.rows) + if (is_output_full(browser, row)) break; node = next; } @@ -757,16 +799,20 @@ static int hist_browser__show_entry(struct hist_browser *browser, if (folded_sign == '-' && row != browser->b.rows) { u64 total = hists__total_period(entry->hists); + struct callchain_print_arg arg = { + .row_offset = row_offset, + .is_current_entry = current_entry, + }; if (symbol_conf.cumulate_callchain) total = entry->stat_acc->period; printed += hist_browser__show_callchain(browser, - &entry->sorted_chain, - 1, row, &row_offset, - total, ¤t_entry); + &entry->sorted_chain, 1, row, total, + hist_browser__show_callchain_entry, &arg, + hist_browser__check_output_full); - if (current_entry) + if (arg.is_current_entry) browser->he_selection = entry; } @@ -1022,110 +1068,21 @@ do_offset: } } -static int hist_browser__fprintf_callchain_node_rb_tree(struct hist_browser *browser, - struct callchain_node *chain_node, - u64 total, int level, - FILE *fp) -{ - struct rb_node *node; - int offset = level * LEVEL_OFFSET_STEP; - u64 new_total; - int printed = 0; - - if (callchain_param.mode == CHAIN_GRAPH_REL) - new_total = chain_node->children_hit; - else - new_total = total; - - node = rb_first(&chain_node->rb_root); - while (node) { - struct callchain_node *child = rb_entry(node, struct callchain_node, rb_node); - struct rb_node *next = rb_next(node); - u64 cumul = callchain_cumul_hits(child); - struct callchain_list *chain; - char folded_sign = ' '; - int first = true; - int extra_offset = 0; - - list_for_each_entry(chain, &child->val, list) { - char bf[1024], *alloc_str; - const char *str; - bool was_first = first; - - if (first) - first = false; - else - extra_offset = LEVEL_OFFSET_STEP; - - folded_sign = callchain_list__folded(chain); - - alloc_str = NULL; - str = callchain_list__sym_name(chain, bf, sizeof(bf), - browser->show_dso); - if (was_first) { - double percent = cumul * 100.0 / new_total; - - if (asprintf(&alloc_str, "%2.2f%% %s", percent, str) < 0) - str = "Not enough memory!"; - else - str = alloc_str; - } - - printed += fprintf(fp, "%*s%c %s\n", offset + extra_offset, " ", folded_sign, str); - free(alloc_str); - if (folded_sign == '+') - break; - } - - if (folded_sign == '-') { - const int new_level = level + (extra_offset ? 2 : 1); - printed += hist_browser__fprintf_callchain_node_rb_tree(browser, child, new_total, - new_level, fp); - } - - node = next; - } - - return printed; -} - -static int hist_browser__fprintf_callchain_node(struct hist_browser *browser, - struct callchain_node *node, - int level, FILE *fp) -{ - struct callchain_list *chain; - int offset = level * LEVEL_OFFSET_STEP; - char folded_sign = ' '; - int printed = 0; - - list_for_each_entry(chain, &node->val, list) { - char bf[1024], *s; - - folded_sign = callchain_list__folded(chain); - s = callchain_list__sym_name(chain, bf, sizeof(bf), browser->show_dso); - printed += fprintf(fp, "%*s%c %s\n", offset, " ", folded_sign, s); - } - - if (folded_sign == '-') - printed += hist_browser__fprintf_callchain_node_rb_tree(browser, node, - browser->hists->stats.total_period, - level + 1, fp); - return printed; -} - static int hist_browser__fprintf_callchain(struct hist_browser *browser, - struct rb_root *chain, int level, FILE *fp) + struct hist_entry *he, FILE *fp) { - struct rb_node *nd; - int printed = 0; - - for (nd = rb_first(chain); nd; nd = rb_next(nd)) { - struct callchain_node *node = rb_entry(nd, struct callchain_node, rb_node); + u64 total = hists__total_period(he->hists); + struct callchain_print_arg arg = { + .fp = fp, + }; - printed += hist_browser__fprintf_callchain_node(browser, node, level, fp); - } + if (symbol_conf.cumulate_callchain) + total = he->stat_acc->period; - return printed; + hist_browser__show_callchain(browser, &he->sorted_chain, 1, 0, total, + hist_browser__fprintf_callchain_entry, &arg, + hist_browser__check_dump_full); + return arg.printed; } static int hist_browser__fprintf_entry(struct hist_browser *browser, @@ -1164,7 +1121,7 @@ static int hist_browser__fprintf_entry(struct hist_browser *browser, printed += fprintf(fp, "%s\n", rtrim(s)); if (folded_sign == '-') - printed += hist_browser__fprintf_callchain(browser, &he->sorted_chain, 1, fp); + printed += hist_browser__fprintf_callchain(browser, he, fp); return printed; } -- cgit v1.1 From 1a1c0ffb2adb2d2ce7bb9c4dfd2935ba345cf2c2 Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Sat, 23 Aug 2014 14:59:48 +0200 Subject: perf tools: Add +field argument support for --sort option Adding support to add field(s) to default sort order via using the '+' prefix, like for report: $ perf report Samples: 2K of event 'cycles', Event count (approx.): 882172583 Overhead Command Shared Object Symbol 7.39% swapper [kernel.kallsyms] [k] intel_idle 1.97% firefox libpthread-2.17.so [.] pthread_mutex_lock 1.39% firefox [snd_hda_intel] [k] azx_get_position 1.11% firefox libpthread-2.17.so [.] pthread_mutex_unlock $ perf report -s +cpu Samples: 2K of event 'cycles', Event count (approx.): 882172583 Overhead Command Shared Object Symbol CPU 2.89% swapper [kernel.kallsyms] [k] intel_idle 000 2.61% swapper [kernel.kallsyms] [k] intel_idle 002 1.20% swapper [kernel.kallsyms] [k] intel_idle 001 0.82% firefox libpthread-2.17.so [.] pthread_mutex_lock 002 Works in general for commands using --sort option. v2 with changes suggested: - Use dynamic memory instead static buffer - Fix error message typo Signed-off-by: Jiri Olsa Acked-by: Namhyung Kim Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jean Pihet Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20140823125948.GA1193@krava.brq.redhat.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/sort.c | 37 ++++++++++++++++++++++++++++++++++++- 1 file changed, 36 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c index 1958637..289df9d 100644 --- a/tools/perf/util/sort.c +++ b/tools/perf/util/sort.c @@ -1446,12 +1446,47 @@ static const char *get_default_sort_order(void) return default_sort_orders[sort__mode]; } +static int setup_sort_order(void) +{ + char *new_sort_order; + + /* + * Append '+'-prefixed sort order to the default sort + * order string. + */ + if (!sort_order || is_strict_order(sort_order)) + return 0; + + if (sort_order[1] == '\0') { + error("Invalid --sort key: `+'"); + return -EINVAL; + } + + /* + * We allocate new sort_order string, but we never free it, + * because it's checked over the rest of the code. + */ + if (asprintf(&new_sort_order, "%s,%s", + get_default_sort_order(), sort_order + 1) < 0) { + error("Not enough memory to set up --sort"); + return -ENOMEM; + } + + sort_order = new_sort_order; + return 0; +} + static int __setup_sorting(void) { char *tmp, *tok, *str; - const char *sort_keys = sort_order; + const char *sort_keys; int ret = 0; + ret = setup_sort_order(); + if (ret) + return ret; + + sort_keys = sort_order; if (sort_keys == NULL) { if (is_strict_order(field_order)) { /* -- cgit v1.1 From 65ccb4faae872b63dd8f5fbc83d0195e3dfabf0d Mon Sep 17 00:00:00 2001 From: Anton Blanchard Date: Mon, 25 Aug 2014 18:25:06 +1000 Subject: perf tools powerpc: Fix build issue when DWARF support is disabled The powerpc skip callchain code uses DWARF, so we must disable it if DWARF is disabled. Signed-off-by: Anton Blanchard Cc: Ingo Molnar Cc: Michael Ellerman Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Sukadev Bhattiprolu Link: http://lkml.kernel.org/r/20140825182506.2be6512d@kryten Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/arch/powerpc/Makefile | 2 +- tools/perf/config/Makefile | 10 ++++++---- 2 files changed, 7 insertions(+), 5 deletions(-) (limited to 'tools') diff --git a/tools/perf/arch/powerpc/Makefile b/tools/perf/arch/powerpc/Makefile index b92219b..6f7782b 100644 --- a/tools/perf/arch/powerpc/Makefile +++ b/tools/perf/arch/powerpc/Makefile @@ -1,6 +1,6 @@ ifndef NO_DWARF PERF_HAVE_DWARF_REGS := 1 LIB_OBJS += $(OUTPUT)arch/$(ARCH)/util/dwarf-regs.o +LIB_OBJS += $(OUTPUT)arch/$(ARCH)/util/skip-callchain-idx.o endif LIB_OBJS += $(OUTPUT)arch/$(ARCH)/util/header.o -LIB_OBJS += $(OUTPUT)arch/$(ARCH)/util/skip-callchain-idx.o diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile index 75d4c23..98c9fd1 100644 --- a/tools/perf/config/Makefile +++ b/tools/perf/config/Makefile @@ -48,10 +48,6 @@ ifneq ($(ARCH),$(filter $(ARCH),x86 arm)) NO_LIBDW_DWARF_UNWIND := 1 endif -ifeq ($(ARCH),powerpc) - CFLAGS += -DHAVE_SKIP_CALLCHAIN_IDX -endif - ifeq ($(LIBUNWIND_LIBS),) NO_LIBUNWIND := 1 else @@ -378,6 +374,12 @@ ifndef NO_LIBELF endif # NO_DWARF endif # NO_LIBELF +ifeq ($(ARCH),powerpc) + ifndef NO_DWARF + CFLAGS += -DHAVE_SKIP_CALLCHAIN_IDX + endif +endif + ifndef NO_LIBUNWIND ifneq ($(feature-libunwind), 1) msg := $(warning No libunwind found. Please install libunwind-dev[el] >= 1.1 and/or set LIBUNWIND_DIR); -- cgit v1.1 From 3ae4a76ac840021294c091884e04af7c92e481ae Mon Sep 17 00:00:00 2001 From: Alexander Yarygin Date: Mon, 1 Sep 2014 17:44:53 +0400 Subject: perf kvm stat report: Save pid string in opts.target.pid The 'perf kvm stat report' command uses the kvm->pid_str field to keep the value of the --pid option. Let's use kvm->opts.target.pid instead. Signed-off-by: Alexander Yarygin Acked-by: David Ahern Cc: Christian Borntraeger Cc: David Ahern Cc: Ingo Molnar Cc: Jiri Olsa Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1409579095-12963-2-git-send-email-yarygin@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-kvm.c | 6 +++--- tools/perf/util/kvm-stat.h | 1 - 2 files changed, 3 insertions(+), 4 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c index 1a4ef9c..646ec5d 100644 --- a/tools/perf/builtin-kvm.c +++ b/tools/perf/builtin-kvm.c @@ -1085,8 +1085,8 @@ static int read_events(struct perf_kvm_stat *kvm) static int parse_target_str(struct perf_kvm_stat *kvm) { - if (kvm->pid_str) { - kvm->pid_list = intlist__new(kvm->pid_str); + if (kvm->opts.target.pid) { + kvm->pid_list = intlist__new(kvm->opts.target.pid); if (kvm->pid_list == NULL) { pr_err("Error parsing process id string\n"); return -EINVAL; @@ -1188,7 +1188,7 @@ kvm_events_report(struct perf_kvm_stat *kvm, int argc, const char **argv) OPT_STRING('k', "key", &kvm->sort_key, "sort-key", "key for sorting: sample(sort by samples number)" " time (sort by avg time)"), - OPT_STRING('p', "pid", &kvm->pid_str, "pid", + OPT_STRING('p', "pid", &kvm->opts.target.pid, "pid", "analyze events only for given process id(s)"), OPT_END() }; diff --git a/tools/perf/util/kvm-stat.h b/tools/perf/util/kvm-stat.h index 0b5a8cd..cf1d7913 100644 --- a/tools/perf/util/kvm-stat.h +++ b/tools/perf/util/kvm-stat.h @@ -92,7 +92,6 @@ struct perf_kvm_stat { u64 lost_events; u64 duration; - const char *pid_str; struct intlist *pid_list; struct rb_root result; -- cgit v1.1 From f181957c2849478fc963a8ac3c7dacf0a87c6b05 Mon Sep 17 00:00:00 2001 From: Alexander Yarygin Date: Mon, 1 Sep 2014 17:44:54 +0400 Subject: perf kvm stat report: Enable the target.system_wide flag The 'perf kvm stat report' command can be used to analyze events either for system wide or for specific pids. Let's enable kvm->opts.target.system_wide flag when 'report' command is running for system-wide analyzing. This helps to sync kvm->opts.target values in 'report' and 'live' commands. Signed-off-by: Alexander Yarygin Acked-by: David Ahern Cc: Christian Borntraeger Cc: David Ahern Cc: Ingo Molnar Cc: Jiri Olsa Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1409579095-12963-3-git-send-email-yarygin@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-kvm.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'tools') diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c index 646ec5d..84295ab 100644 --- a/tools/perf/builtin-kvm.c +++ b/tools/perf/builtin-kvm.c @@ -1207,6 +1207,9 @@ kvm_events_report(struct perf_kvm_stat *kvm, int argc, const char **argv) kvm_events_report_options); } + if (!kvm->opts.target.pid) + kvm->opts.target.system_wide = true; + return kvm_events_report_vcpu(kvm); } -- cgit v1.1 From 1f3e5b55035549311e42c3f84007e6c799ed991f Mon Sep 17 00:00:00 2001 From: Alexander Yarygin Date: Mon, 1 Sep 2014 17:44:55 +0400 Subject: perf kvm stat report: Unify the title bar output The 'live' command prints additional information to the "Analyze events for " title bar about the current target. Let's print the same title for the 'report' command. Signed-off-by: Alexander Yarygin Acked-by: David Ahern Cc: Christian Borntraeger Cc: David Ahern Cc: Ingo Molnar Cc: Jiri Olsa Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1409579095-12963-4-git-send-email-yarygin@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-kvm.c | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c index 84295ab..f5d3ae4 100644 --- a/tools/perf/builtin-kvm.c +++ b/tools/perf/builtin-kvm.c @@ -543,14 +543,12 @@ static void print_vcpu_info(struct perf_kvm_stat *kvm) pr_info("Analyze events for "); - if (kvm->live) { - if (kvm->opts.target.system_wide) - pr_info("all VMs, "); - else if (kvm->opts.target.pid) - pr_info("pid(s) %s, ", kvm->opts.target.pid); - else - pr_info("dazed and confused on what is monitored, "); - } + if (kvm->opts.target.system_wide) + pr_info("all VMs, "); + else if (kvm->opts.target.pid) + pr_info("pid(s) %s, ", kvm->opts.target.pid); + else + pr_info("dazed and confused on what is monitored, "); if (vcpu == -1) pr_info("all VCPUs:\n\n"); -- cgit v1.1 From 6997af72e6c1e9d8c1cc511dc9485e9ee69a5e20 Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Mon, 25 Aug 2014 16:55:52 +0200 Subject: perf tools: Allow to specify lib compile variable for spec usage We need a way to specify $(lib) part of the installation path for traceevent plugin libraries. Currently we use 'lib64' for x86_64 and 'lib' otherwise. Instead of listing all possible values, this change allows the rpm spec code to specify the correct $(lib) part based on processed architecture, like $ make ... lib=%{_lib} Signed-off-by: Jiri Olsa Tested-by: Kyle McMartin Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Kyle McMartin Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1408978552-17131-1-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/config/Makefile | 2 ++ 1 file changed, 2 insertions(+) (limited to 'tools') diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile index 98c9fd1..58f6091 100644 --- a/tools/perf/config/Makefile +++ b/tools/perf/config/Makefile @@ -653,11 +653,13 @@ else sysconfdir = $(prefix)/etc ETC_PERFCONFIG = etc/perfconfig endif +ifndef lib ifeq ($(IS_X86_64),1) lib = lib64 else lib = lib endif +endif # lib libdir = $(prefix)/$(lib) # Shell quote (do not use $(call) to accommodate ancient setups); -- cgit v1.1 From ad96227349901838e1a7f96f1dc22d96a97520c0 Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Fri, 15 Aug 2014 22:08:40 +0300 Subject: perf tools: Let a user specify a PMU event without any config terms This enables a PMU event to be specified in the form: pmu// which is effectively the same as: pmu/config=0/ This patch is a precursor to defining default config for a PMU. Further explanation extracted from lkml thread: Imagine that the 'tsc' term did not exist. Intel PT trace data would not contain TSC packets, and the decoder would not know how to decode them. Then imagine that a new version of the hardware adds 'tsc'. It is such a useful feature that we want it by default, but older versions of the tools don't know how to decode it, so the kernel cannot turn it on by default. It is similar to why the kernel does not select perf_event_attr.mmap2 by default. The kernel doesn't know whether the tool supports it. Signed-off-by: Adrian Hunter Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1408129739-17368-6-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/parse-events.c | 6 ++++++ tools/perf/util/parse-events.y | 10 ++++++++++ 2 files changed, 16 insertions(+) (limited to 'tools') diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c index e34c81a..e756288 100644 --- a/tools/perf/util/parse-events.c +++ b/tools/perf/util/parse-events.c @@ -645,6 +645,12 @@ int parse_events_add_pmu(struct list_head *list, int *idx, memset(&attr, 0, sizeof(attr)); + if (!head_config) { + attr.type = pmu->type; + evsel = __add_event(list, idx, &attr, NULL, pmu->cpus); + return evsel ? 0 : -ENOMEM; + } + if (perf_pmu__check_alias(pmu, head_config, &unit, &scale)) return -EINVAL; diff --git a/tools/perf/util/parse-events.y b/tools/perf/util/parse-events.y index 0bc87ba..55fab6a 100644 --- a/tools/perf/util/parse-events.y +++ b/tools/perf/util/parse-events.y @@ -210,6 +210,16 @@ PE_NAME '/' event_config '/' parse_events__free_terms($3); $$ = list; } +| +PE_NAME '/' '/' +{ + struct parse_events_evlist *data = _data; + struct list_head *list; + + ALLOC_LIST(list); + ABORT_ON(parse_events_add_pmu(list, &data->idx, $1, NULL)); + $$ = list; +} value_sym: PE_VALUE_SYM_HW -- cgit v1.1 From c501e90b4700e4f247ccdcf5ae81f9846a2ef5f9 Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Thu, 31 Jul 2014 09:01:12 +0300 Subject: perf tools: Add perf-with-kcore script Decoding an Intel PT trace of the kernel requires an accurate kernel object image. This is provided by making a copy of kcore. However the copy needs to be made under the same conditions as the original recording, and then it needs to be associated with the perf.data file. The perf-with-kcore script does that. The script also checks the permissions on the buildid cache and can be used to fix them. That is needed for distributions where root does not have a home directory and consequently writes to the same buildid cache as the user, resulting in cached files that the user does not have access to. Example: $ ./perf-with-kcore Usage: perf-with-kcore [ [ -- ]] can be record, script, report or inject or: perf-with-kcore fix_buildid_cache_permissions $ ./perf-with-kcore record pt_uname -e intel_pt// -- uname Recording Using /home/ahunter/bin/perf perf version 3.15.rc3.g4549ba /home/ahunter/bin/perf record -o pt_uname/perf.data -e intel_pt// -- uname Linux [ perf record: Woken up 3 times to write data ] [ perf record: Captured and wrote 0.023 MB pt_uname/perf.data ] Copying kcore [sudo] password for ahunter: Done $ tools/perf/perf-with-kcore.sh script pt_uname | head Using /home/ahunter/bin/perf perf version 3.15.rc3.g4549ba /home/ahunter/bin/perf script -i pt_uname/perf.data --kallsyms=pt_uname/kcore_dir/kallsyms swapper 0 [002] 161533.969666: sched:sched_switch: swapper/2:0 [120] R ==> perf:11316 [120] :11315 11315 [003] 161533.969704: sched:sched_switch: perf:11315 [120] S ==> swapper/3:0 [120] :11316 11316 [002] 161533.969783: sched:sched_switch: perf:11316 [120] R ==> migration/2:33 [0] :33 33 [002] 161533.969791: sched:sched_switch: migration/2:33 [0] S ==> swapper/2:0 [120] swapper 0 [003] 161533.969792: sched:sched_switch: swapper/3:0 [120] R ==> perf:11316 [120] :11316 11316 [003] 161533.970062: branches: 0 [unknown] ([unknown]) => ffffffff810532fa native_write_msr_safe ([kernel.kallsyms]) :11316 11316 [003] 161533.970062: branches: ffffffff810532fd native_write_msr_safe ([kernel.kallsyms]) => ffffffff81035b31 pt_config_start ([kernel.kallsyms]) Signed-off-by: Adrian Hunter Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1406786474-9306-30-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/.gitignore | 1 + tools/perf/Makefile.perf | 5 +- tools/perf/perf-with-kcore.sh | 259 ++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 264 insertions(+), 1 deletion(-) create mode 100644 tools/perf/perf-with-kcore.sh (limited to 'tools') diff --git a/tools/perf/.gitignore b/tools/perf/.gitignore index 782d86e..717221e 100644 --- a/tools/perf/.gitignore +++ b/tools/perf/.gitignore @@ -15,6 +15,7 @@ perf.data perf.data.old output.svg perf-archive +perf-with-kcore tags TAGS cscope* diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf index 95e832b..171f4e6 100644 --- a/tools/perf/Makefile.perf +++ b/tools/perf/Makefile.perf @@ -126,6 +126,7 @@ PYRF_OBJS = SCRIPT_SH = SCRIPT_SH += perf-archive.sh +SCRIPT_SH += perf-with-kcore.sh grep-libs = $(filter -l%,$(1)) strip-libs = $(filter-out -l%,$(1)) @@ -878,6 +879,8 @@ install-bin: all install-gtk $(INSTALL) -d -m 755 '$(DESTDIR_SQ)$(perfexec_instdir_SQ)' $(call QUIET_INSTALL, perf-archive) \ $(INSTALL) $(OUTPUT)perf-archive -t '$(DESTDIR_SQ)$(perfexec_instdir_SQ)' + $(call QUIET_INSTALL, perf-with-kcore) \ + $(INSTALL) $(OUTPUT)perf-with-kcore -t '$(DESTDIR_SQ)$(perfexec_instdir_SQ)' ifndef NO_LIBPERL $(call QUIET_INSTALL, perl-scripts) \ $(INSTALL) -d -m 755 '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/scripts/perl/Perf-Trace-Util/lib/Perf/Trace'; \ @@ -923,7 +926,7 @@ config-clean: @$(MAKE) -C config/feature-checks clean >/dev/null clean: $(LIBTRACEEVENT)-clean $(LIBAPIKFS)-clean config-clean - $(call QUIET_CLEAN, core-objs) $(RM) $(LIB_OBJS) $(BUILTIN_OBJS) $(LIB_FILE) $(OUTPUT)perf-archive $(OUTPUT)perf.o $(LANG_BINDINGS) $(GTK_OBJS) + $(call QUIET_CLEAN, core-objs) $(RM) $(LIB_OBJS) $(BUILTIN_OBJS) $(LIB_FILE) $(OUTPUT)perf-archive $(OUTPUT)perf-with-kcore $(OUTPUT)perf.o $(LANG_BINDINGS) $(GTK_OBJS) $(call QUIET_CLEAN, core-progs) $(RM) $(ALL_PROGRAMS) perf $(call QUIET_CLEAN, core-gen) $(RM) *.spec *.pyc *.pyo */*.pyc */*.pyo $(OUTPUT)common-cmds.h TAGS tags cscope* $(OUTPUT)PERF-VERSION-FILE $(OUTPUT)PERF-CFLAGS $(OUTPUT)PERF-FEATURES $(OUTPUT)util/*-bison* $(OUTPUT)util/*-flex* $(QUIET_SUBDIR0)Documentation $(QUIET_SUBDIR1) clean diff --git a/tools/perf/perf-with-kcore.sh b/tools/perf/perf-with-kcore.sh new file mode 100644 index 0000000..c7ff90a --- /dev/null +++ b/tools/perf/perf-with-kcore.sh @@ -0,0 +1,259 @@ +#!/bin/bash +# perf-with-kcore: use perf with a copy of kcore +# Copyright (c) 2014, Intel Corporation. +# +# This program is free software; you can redistribute it and/or modify it +# under the terms and conditions of the GNU General Public License, +# version 2, as published by the Free Software Foundation. +# +# This program is distributed in the hope it will be useful, but WITHOUT +# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or +# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for +# more details. + +set -e + +usage() +{ + echo "Usage: perf-with-kcore [ [ -- ]]" >&2 + echo " can be record, script, report or inject" >&2 + echo " or: perf-with-kcore fix_buildid_cache_permissions" >&2 + exit 1 +} + +find_perf() +{ + if [ -n "$PERF" ] ; then + return + fi + PERF=`which perf || true` + if [ -z "$PERF" ] ; then + echo "Failed to find perf" >&2 + exit 1 + fi + if [ ! -x "$PERF" ] ; then + echo "Failed to find perf" >&2 + exit 1 + fi + echo "Using $PERF" + "$PERF" version +} + +copy_kcore() +{ + echo "Copying kcore" + + if [ $EUID -eq 0 ] ; then + SUDO="" + else + SUDO="sudo" + fi + + rm -f perf.data.junk + ("$PERF" record -o perf.data.junk $PERF_OPTIONS -- sleep 60) >/dev/null 2>/dev/null & + PERF_PID=$! + + # Need to make sure that perf has started + sleep 1 + + KCORE=$(($SUDO "$PERF" buildid-cache -v -f -k /proc/kcore >/dev/null) 2>&1) + case "$KCORE" in + "kcore added to build-id cache directory "*) + KCORE_DIR=${KCORE#"kcore added to build-id cache directory "} + ;; + *) + kill $PERF_PID + wait >/dev/null 2>/dev/null || true + rm perf.data.junk + echo "$KCORE" + echo "Failed to find kcore" >&2 + exit 1 + ;; + esac + + kill $PERF_PID + wait >/dev/null 2>/dev/null || true + rm perf.data.junk + + $SUDO cp -a "$KCORE_DIR" "$(pwd)/$PERF_DATA_DIR" + $SUDO rm -f "$KCORE_DIR/kcore" + $SUDO rm -f "$KCORE_DIR/kallsyms" + $SUDO rm -f "$KCORE_DIR/modules" + $SUDO rmdir "$KCORE_DIR" + + KCORE_DIR_BASENAME=$(basename "$KCORE_DIR") + KCORE_DIR="$(pwd)/$PERF_DATA_DIR/$KCORE_DIR_BASENAME" + + $SUDO chown $UID "$KCORE_DIR" + $SUDO chown $UID "$KCORE_DIR/kcore" + $SUDO chown $UID "$KCORE_DIR/kallsyms" + $SUDO chown $UID "$KCORE_DIR/modules" + + $SUDO chgrp $GROUPS "$KCORE_DIR" + $SUDO chgrp $GROUPS "$KCORE_DIR/kcore" + $SUDO chgrp $GROUPS "$KCORE_DIR/kallsyms" + $SUDO chgrp $GROUPS "$KCORE_DIR/modules" + + ln -s "$KCORE_DIR_BASENAME" "$PERF_DATA_DIR/kcore_dir" +} + +fix_buildid_cache_permissions() +{ + if [ $EUID -ne 0 ] ; then + echo "This script must be run as root via sudo " >&2 + exit 1 + fi + + if [ -z "$SUDO_USER" ] ; then + echo "This script must be run via sudo" >&2 + exit 1 + fi + + USER_HOME=$(bash <<< "echo ~$SUDO_USER") + + if [ "$HOME" != "$USER_HOME" ] ; then + echo "Fix unnecessary because root has a home: $HOME" >&2 + exit 1 + fi + + echo "Fixing buildid cache permissions" + + find "$USER_HOME/.debug" -xdev -type d ! -user "$SUDO_USER" -ls -exec chown "$SUDO_USER" \{\} \; + find "$USER_HOME/.debug" -xdev -type f -links 1 ! -user "$SUDO_USER" -ls -exec chown "$SUDO_USER" \{\} \; + find "$USER_HOME/.debug" -xdev -type l ! -user "$SUDO_USER" -ls -exec chown -h "$SUDO_USER" \{\} \; + + if [ -n "$SUDO_GID" ] ; then + find "$USER_HOME/.debug" -xdev -type d ! -group "$SUDO_GID" -ls -exec chgrp "$SUDO_GID" \{\} \; + find "$USER_HOME/.debug" -xdev -type f -links 1 ! -group "$SUDO_GID" -ls -exec chgrp "$SUDO_GID" \{\} \; + find "$USER_HOME/.debug" -xdev -type l ! -group "$SUDO_GID" -ls -exec chgrp -h "$SUDO_GID" \{\} \; + fi + + echo "Done" +} + +check_buildid_cache_permissions() +{ + if [ $EUID -eq 0 ] ; then + return + fi + + PERMISSIONS_OK+=$(find "$HOME/.debug" -xdev -type d ! -user "$USER" -print -quit) + PERMISSIONS_OK+=$(find "$HOME/.debug" -xdev -type f -links 1 ! -user "$USER" -print -quit) + PERMISSIONS_OK+=$(find "$HOME/.debug" -xdev -type l ! -user "$USER" -print -quit) + + PERMISSIONS_OK+=$(find "$HOME/.debug" -xdev -type d ! -group "$GROUPS" -print -quit) + PERMISSIONS_OK+=$(find "$HOME/.debug" -xdev -type f -links 1 ! -group "$GROUPS" -print -quit) + PERMISSIONS_OK+=$(find "$HOME/.debug" -xdev -type l ! -group "$GROUPS" -print -quit) + + if [ -n "$PERMISSIONS_OK" ] ; then + echo "*** WARNING *** buildid cache permissions may need fixing" >&2 + fi +} + +record() +{ + echo "Recording" + + if [ $EUID -ne 0 ] ; then + + if [ "$(cat /proc/sys/kernel/kptr_restrict)" -ne 0 ] ; then + echo "*** WARNING *** /proc/sys/kernel/kptr_restrict prevents access to kernel addresses" >&2 + fi + + if echo "$PERF_OPTIONS" | grep -q ' -a \|^-a \| -a$\|^-a$\| --all-cpus \|^--all-cpus \| --all-cpus$\|^--all-cpus$' ; then + echo "*** WARNING *** system-wide tracing without root access will not be able to read all necessary information from /proc" >&2 + fi + + if echo "$PERF_OPTIONS" | grep -q 'intel_pt\|intel_bts\| -I\|^-I' ; then + if [ "$(cat /proc/sys/kernel/perf_event_paranoid)" -gt -1 ] ; then + echo "*** WARNING *** /proc/sys/kernel/perf_event_paranoid restricts buffer size and tracepoint (sched_switch) use" >&2 + fi + + if echo "$PERF_OPTIONS" | grep -q ' --per-thread \|^--per-thread \| --per-thread$\|^--per-thread$' ; then + true + elif echo "$PERF_OPTIONS" | grep -q ' -t \|^-t \| -t$\|^-t$' ; then + true + elif [ ! -r /sys/kernel/debug -o ! -x /sys/kernel/debug ] ; then + echo "*** WARNING *** /sys/kernel/debug permissions prevent tracepoint (sched_switch) use" >&2 + fi + fi + fi + + if [ -z "$1" ] ; then + echo "Workload is required for recording" >&2 + usage + fi + + if [ -e "$PERF_DATA_DIR" ] ; then + echo "'$PERF_DATA_DIR' exists" >&2 + exit 1 + fi + + find_perf + + mkdir "$PERF_DATA_DIR" + + echo "$PERF record -o $PERF_DATA_DIR/perf.data $PERF_OPTIONS -- $*" + "$PERF" record -o "$PERF_DATA_DIR/perf.data" $PERF_OPTIONS -- $* || true + + if rmdir "$PERF_DATA_DIR" > /dev/null 2>/dev/null ; then + exit 1 + fi + + copy_kcore + + echo "Done" +} + +subcommand() +{ + find_perf + check_buildid_cache_permissions + echo "$PERF $PERF_SUB_COMMAND -i $PERF_DATA_DIR/perf.data --kallsyms=$PERF_DATA_DIR/kcore_dir/kallsyms $*" + "$PERF" $PERF_SUB_COMMAND -i "$PERF_DATA_DIR/perf.data" "--kallsyms=$PERF_DATA_DIR/kcore_dir/kallsyms" $* +} + +if [ "$1" = "fix_buildid_cache_permissions" ] ; then + fix_buildid_cache_permissions + exit 0 +fi + +PERF_SUB_COMMAND=$1 +PERF_DATA_DIR=$2 +shift || true +shift || true + +if [ -z "$PERF_SUB_COMMAND" ] ; then + usage +fi + +if [ -z "$PERF_DATA_DIR" ] ; then + usage +fi + +case "$PERF_SUB_COMMAND" in +"record") + while [ "$1" != "--" ] ; do + PERF_OPTIONS+="$1 " + shift || break + done + if [ "$1" != "--" ] ; then + echo "Options and workload are required for recording" >&2 + usage + fi + shift + record $* +;; +"script") + subcommand $* +;; +"report") + subcommand $* +;; +"inject") + subcommand $* +;; +*) + usage +;; +esac -- cgit v1.1 From dc0a6202421170a6d8d2c6f5176575b3f60e0f85 Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Thu, 31 Jul 2014 09:00:49 +0300 Subject: perf tools: Let default config be defined for a PMU This allows default config terms to be provided for a PMU. So, for example, when the Intel PT PMU is added, it will be possible to specify: intel_pt// which will be the same as: intel_pt/tsc=1,noretcomp=0/ meaning that the trace should contain TSC timestamps and perform 'return compression'. An important consideration of this patch is that it must be possible to overwrite the default values. That has meant changing the logic so that a zero value can replace a non-zero value. Signed-off-by: Adrian Hunter Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1406786474-9306-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/tests/pmu.c | 2 +- tools/perf/util/parse-events.c | 7 ++++++- tools/perf/util/pmu.c | 42 ++++++++++++++++++++++++++---------------- tools/perf/util/pmu.h | 9 ++++++++- 4 files changed, 41 insertions(+), 19 deletions(-) (limited to 'tools') diff --git a/tools/perf/tests/pmu.c b/tools/perf/tests/pmu.c index 12b322f..eeb68bb1 100644 --- a/tools/perf/tests/pmu.c +++ b/tools/perf/tests/pmu.c @@ -152,7 +152,7 @@ int test__pmu(void) if (ret) break; - ret = perf_pmu__config_terms(&formats, &attr, terms); + ret = perf_pmu__config_terms(&formats, &attr, terms, false); if (ret) break; diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c index e756288..61be3e6 100644 --- a/tools/perf/util/parse-events.c +++ b/tools/perf/util/parse-events.c @@ -643,7 +643,12 @@ int parse_events_add_pmu(struct list_head *list, int *idx, if (!pmu) return -EINVAL; - memset(&attr, 0, sizeof(attr)); + if (pmu->default_config) { + memcpy(&attr, pmu->default_config, + sizeof(struct perf_event_attr)); + } else { + memset(&attr, 0, sizeof(attr)); + } if (!head_config) { attr.type = pmu->type; diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c index 9bf5827..438bb26 100644 --- a/tools/perf/util/pmu.c +++ b/tools/perf/util/pmu.c @@ -2,6 +2,7 @@ #include #include #include +#include #include #include #include @@ -387,6 +388,12 @@ static struct cpu_map *pmu_cpumask(const char *name) return cpus; } +struct perf_event_attr *__attribute__((weak)) +perf_pmu__get_default_config(struct perf_pmu *pmu __maybe_unused) +{ + return NULL; +} + static struct perf_pmu *pmu_lookup(const char *name) { struct perf_pmu *pmu; @@ -421,6 +428,9 @@ static struct perf_pmu *pmu_lookup(const char *name) pmu->name = strdup(name); pmu->type = type; list_add_tail(&pmu->list, &pmus); + + pmu->default_config = perf_pmu__get_default_config(pmu); + return pmu; } @@ -479,28 +489,24 @@ pmu_find_format(struct list_head *formats, char *name) } /* - * Returns value based on the format definition (format parameter) + * Sets value based on the format definition (format parameter) * and unformated value (value parameter). - * - * TODO maybe optimize a little ;) */ -static __u64 pmu_format_value(unsigned long *format, __u64 value) +static void pmu_format_value(unsigned long *format, __u64 value, __u64 *v, + bool zero) { unsigned long fbit, vbit; - __u64 v = 0; for (fbit = 0, vbit = 0; fbit < PERF_PMU_FORMAT_BITS; fbit++) { if (!test_bit(fbit, format)) continue; - if (!(value & (1llu << vbit++))) - continue; - - v |= (1llu << fbit); + if (value & (1llu << vbit++)) + *v |= (1llu << fbit); + else if (zero) + *v &= ~(1llu << fbit); } - - return v; } /* @@ -509,7 +515,8 @@ static __u64 pmu_format_value(unsigned long *format, __u64 value) */ static int pmu_config_term(struct list_head *formats, struct perf_event_attr *attr, - struct parse_events_term *term) + struct parse_events_term *term, + bool zero) { struct perf_pmu_format *format; __u64 *vp; @@ -548,18 +555,19 @@ static int pmu_config_term(struct list_head *formats, * non-hardcoded terms, here's the place to translate * them into value. */ - *vp |= pmu_format_value(format->bits, term->val.num); + pmu_format_value(format->bits, term->val.num, vp, zero); return 0; } int perf_pmu__config_terms(struct list_head *formats, struct perf_event_attr *attr, - struct list_head *head_terms) + struct list_head *head_terms, + bool zero) { struct parse_events_term *term; list_for_each_entry(term, head_terms, list) - if (pmu_config_term(formats, attr, term)) + if (pmu_config_term(formats, attr, term, zero)) return -EINVAL; return 0; @@ -573,8 +581,10 @@ int perf_pmu__config_terms(struct list_head *formats, int perf_pmu__config(struct perf_pmu *pmu, struct perf_event_attr *attr, struct list_head *head_terms) { + bool zero = !!pmu->default_config; + attr->type = pmu->type; - return perf_pmu__config_terms(&pmu->format, attr, head_terms); + return perf_pmu__config_terms(&pmu->format, attr, head_terms, zero); } static struct perf_pmu_alias *pmu_find_alias(struct perf_pmu *pmu, diff --git a/tools/perf/util/pmu.h b/tools/perf/util/pmu.h index 1c1e2ee..413b9a6 100644 --- a/tools/perf/util/pmu.h +++ b/tools/perf/util/pmu.h @@ -13,9 +13,12 @@ enum { #define PERF_PMU_FORMAT_BITS 64 +struct perf_event_attr; + struct perf_pmu { char *name; __u32 type; + struct perf_event_attr *default_config; struct cpu_map *cpus; struct list_head format; /* HEAD struct perf_pmu_format -> list */ struct list_head aliases; /* HEAD struct perf_pmu_alias -> list */ @@ -27,7 +30,8 @@ int perf_pmu__config(struct perf_pmu *pmu, struct perf_event_attr *attr, struct list_head *head_terms); int perf_pmu__config_terms(struct list_head *formats, struct perf_event_attr *attr, - struct list_head *head_terms); + struct list_head *head_terms, + bool zero); int perf_pmu__check_alias(struct perf_pmu *pmu, struct list_head *head_terms, const char **unit, double *scale); struct list_head *perf_pmu__alias(struct perf_pmu *pmu, @@ -46,4 +50,7 @@ void print_pmu_events(const char *event_glob, bool name_only); bool pmu_have_event(const char *pname, const char *name); int perf_pmu__test(void); + +struct perf_event_attr *perf_pmu__get_default_config(struct perf_pmu *pmu); + #endif /* __PMU_H */ -- cgit v1.1 From 7d4bdab5a441772bfc757d7f9eea9465ec5de0ec Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Thu, 31 Jul 2014 09:00:50 +0300 Subject: perf tools: Add perf_pmu__scan_file() Add a function to scan a sysfs file within the pmu device directory. This will be used to read capability values from the PMU 'caps' subdirectory. Signed-off-by: Adrian Hunter Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1406786474-9306-8-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/pmu.c | 37 +++++++++++++++++++++++++++++++++++++ tools/perf/util/pmu.h | 3 +++ 2 files changed, 40 insertions(+) (limited to 'tools') diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c index 438bb26..22a4ad5 100644 --- a/tools/perf/util/pmu.c +++ b/tools/perf/util/pmu.c @@ -3,6 +3,7 @@ #include #include #include +#include #include #include #include @@ -804,3 +805,39 @@ bool pmu_have_event(const char *pname, const char *name) } return false; } + +static FILE *perf_pmu__open_file(struct perf_pmu *pmu, const char *name) +{ + struct stat st; + char path[PATH_MAX]; + const char *sysfs; + + sysfs = sysfs__mountpoint(); + if (!sysfs) + return NULL; + + snprintf(path, PATH_MAX, + "%s" EVENT_SOURCE_DEVICE_PATH "%s/%s", sysfs, pmu->name, name); + + if (stat(path, &st) < 0) + return NULL; + + return fopen(path, "r"); +} + +int perf_pmu__scan_file(struct perf_pmu *pmu, const char *name, const char *fmt, + ...) +{ + va_list args; + FILE *file; + int ret = EOF; + + va_start(args, fmt); + file = perf_pmu__open_file(pmu, name); + if (file) { + ret = vfscanf(file, fmt, args); + fclose(file); + } + va_end(args); + return ret; +} diff --git a/tools/perf/util/pmu.h b/tools/perf/util/pmu.h index 413b9a6..0f5c0a8 100644 --- a/tools/perf/util/pmu.h +++ b/tools/perf/util/pmu.h @@ -49,6 +49,9 @@ struct perf_pmu *perf_pmu__scan(struct perf_pmu *pmu); void print_pmu_events(const char *event_glob, bool name_only); bool pmu_have_event(const char *pname, const char *name); +int perf_pmu__scan_file(struct perf_pmu *pmu, const char *name, const char *fmt, + ...) __attribute__((format(scanf, 3, 4))); + int perf_pmu__test(void); struct perf_event_attr *perf_pmu__get_default_config(struct perf_pmu *pmu); -- cgit v1.1 From 29a3ce31c38c8f73f4e076b7ffc0876b4f5dd6c3 Mon Sep 17 00:00:00 2001 From: Stephane Eranian Date: Fri, 5 Sep 2014 06:21:04 +0200 Subject: perf tool: fix compilation for ARM This patch fixes ARM compile of the perf tool. The debug.h header file was missing from a couple of unwind related modules. Signed-off-by: Stephane Eranian Cc: David Ahern Cc: Ingo Molnar Cc: Jiri Olsa Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20140905042103.GA3091@quad Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/arch/arm/tests/dwarf-unwind.c | 1 + tools/perf/arch/arm/util/unwind-libunwind.c | 1 + 2 files changed, 2 insertions(+) (limited to 'tools') diff --git a/tools/perf/arch/arm/tests/dwarf-unwind.c b/tools/perf/arch/arm/tests/dwarf-unwind.c index 9f870d2..62eff84 100644 --- a/tools/perf/arch/arm/tests/dwarf-unwind.c +++ b/tools/perf/arch/arm/tests/dwarf-unwind.c @@ -3,6 +3,7 @@ #include "thread.h" #include "map.h" #include "event.h" +#include "debug.h" #include "tests/tests.h" #define STACK_SIZE 8192 diff --git a/tools/perf/arch/arm/util/unwind-libunwind.c b/tools/perf/arch/arm/util/unwind-libunwind.c index 729ed69..62c397e 100644 --- a/tools/perf/arch/arm/util/unwind-libunwind.c +++ b/tools/perf/arch/arm/util/unwind-libunwind.c @@ -3,6 +3,7 @@ #include #include "perf_regs.h" #include "../../util/unwind.h" +#include "../../util/debug.h" int libunwind__arch_reg_id(int regnum) { -- cgit v1.1 From 763122ade725592402190f5ff3b8d2edf42b87e8 Mon Sep 17 00:00:00 2001 From: Avi Kivity Date: Sat, 13 Sep 2014 07:15:05 +0300 Subject: perf tools: Disable kernel symbol demangling by default Some Linux symbols (for example __vt_event_wait) are interpreted by the demangler as C++ mangled names, which of course they aren't. Disable kernel symbol demangling by default to avoid this, and allow enabling it with a new option --demangle-kernel for those who wish it. Reported-by: Jiri Olsa Signed-off-by: Avi Kivity Acked-by: Jiri Olsa Cc: Jiri Olsa Link: http://lkml.kernel.org/r/1410581705-26968-1-git-send-email-avi@cloudius-systems.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/Documentation/perf-probe.txt | 3 +++ tools/perf/Documentation/perf-report.txt | 3 +++ tools/perf/Documentation/perf-top.txt | 3 +++ tools/perf/builtin-probe.c | 2 ++ tools/perf/builtin-report.c | 2 ++ tools/perf/builtin-top.c | 2 ++ tools/perf/util/symbol-elf.c | 7 ++++++- tools/perf/util/symbol.c | 1 + tools/perf/util/symbol.h | 1 + 9 files changed, 23 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/Documentation/perf-probe.txt b/tools/perf/Documentation/perf-probe.txt index 1513935..aaa869b 100644 --- a/tools/perf/Documentation/perf-probe.txt +++ b/tools/perf/Documentation/perf-probe.txt @@ -104,6 +104,9 @@ OPTIONS Specify path to the executable or shared library file for user space tracing. Can also be used with --funcs option. +--demangle-kernel:: + Demangle kernel symbols. + In absence of -m/-x options, perf probe checks if the first argument after the options is an absolute path name. If its an absolute path, perf probe uses it as a target module/target user space binary to probe. diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt index d561e02..0927bf4 100644 --- a/tools/perf/Documentation/perf-report.txt +++ b/tools/perf/Documentation/perf-report.txt @@ -276,6 +276,9 @@ OPTIONS Demangle symbol names to human readable form. It's enabled by default, disable with --no-demangle. +--demangle-kernel:: + Demangle kernel symbol names to human readable form (for C++ kernels). + --mem-mode:: Use the data addresses of samples in addition to instruction addresses to build the histograms. To generate meaningful output, the perf.data diff --git a/tools/perf/Documentation/perf-top.txt b/tools/perf/Documentation/perf-top.txt index 28fdee3..3265b10 100644 --- a/tools/perf/Documentation/perf-top.txt +++ b/tools/perf/Documentation/perf-top.txt @@ -98,6 +98,9 @@ Default is to monitor all CPUS. --hide_user_symbols:: Hide user symbols. +--demangle-kernel:: + Demangle kernel symbols. + -D:: --dump-symtab:: Dump the symbol table used for profiling. diff --git a/tools/perf/builtin-probe.c b/tools/perf/builtin-probe.c index 347729e..4d6858d 100644 --- a/tools/perf/builtin-probe.c +++ b/tools/perf/builtin-probe.c @@ -376,6 +376,8 @@ __cmd_probe(int argc, const char **argv, const char *prefix __maybe_unused) "target executable name or path", opt_set_target), OPT_BOOLEAN(0, "demangle", &symbol_conf.demangle, "Disable symbol demangling"), + OPT_BOOLEAN(0, "demangle-kernel", &symbol_conf.demangle_kernel, + "Enable kernel symbol demangling"), OPT_END() }; int ret; diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index 3da59a8..8c0b3f2 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -680,6 +680,8 @@ int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused) "objdump binary to use for disassembly and annotations"), OPT_BOOLEAN(0, "demangle", &symbol_conf.demangle, "Disable symbol demangling"), + OPT_BOOLEAN(0, "demangle-kernel", &symbol_conf.demangle_kernel, + "Enable kernel symbol demangling"), OPT_BOOLEAN(0, "mem-mode", &report.mem_mode, "mem access profile"), OPT_CALLBACK(0, "percent-limit", &report, "percent", "Don't show entries under that percent", parse_percent_limit), diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index 9848e27..7da2c46 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -1142,6 +1142,8 @@ int cmd_top(int argc, const char **argv, const char *prefix __maybe_unused) "Interleave source code with assembly code (default)"), OPT_BOOLEAN(0, "asm-raw", &symbol_conf.annotate_asm_raw, "Display raw encoding of assembly instructions (default)"), + OPT_BOOLEAN(0, "demangle-kernel", &symbol_conf.demangle_kernel, + "Enable kernel symbol demangling"), OPT_STRING(0, "objdump", &objdump_path, "path", "objdump binary to use for disassembly and annotations"), OPT_STRING('M', "disassembler-style", &disassembler_style, "disassembler style", diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c index 9fb5e9e..9c9b27f 100644 --- a/tools/perf/util/symbol-elf.c +++ b/tools/perf/util/symbol-elf.c @@ -680,6 +680,11 @@ static u64 ref_reloc(struct kmap *kmap) return 0; } +static bool want_demangle(bool is_kernel_sym) +{ + return is_kernel_sym ? symbol_conf.demangle_kernel : symbol_conf.demangle; +} + int dso__load_sym(struct dso *dso, struct map *map, struct symsrc *syms_ss, struct symsrc *runtime_ss, symbol_filter_t filter, int kmodule) @@ -938,7 +943,7 @@ new_symbol: * DWARF DW_compile_unit has this, but we don't always have access * to it... */ - if (symbol_conf.demangle) { + if (want_demangle(dso->kernel || kmodule)) { int demangle_flags = DMGL_NO_OPTS; if (verbose) demangle_flags = DMGL_PARAMS | DMGL_ANSI; diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c index ac098a3..1adb143 100644 --- a/tools/perf/util/symbol.c +++ b/tools/perf/util/symbol.c @@ -34,6 +34,7 @@ struct symbol_conf symbol_conf = { .try_vmlinux_path = true, .annotate_src = true, .demangle = true, + .demangle_kernel = false, .cumulate_callchain = true, .show_hist_headers = true, .symfs = "", diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h index 3f95ea0..bec4b7b 100644 --- a/tools/perf/util/symbol.h +++ b/tools/perf/util/symbol.h @@ -120,6 +120,7 @@ struct symbol_conf { annotate_src, event_group, demangle, + demangle_kernel, filter_relative, show_hist_headers; const char *vmlinux_name, -- cgit v1.1 From bf9e3e5763722c9668c6719a1de60ee58452b738 Mon Sep 17 00:00:00 2001 From: John Spencer Date: Mon, 25 Aug 2014 21:36:32 +0200 Subject: perf tools: Fix GNU-only grep usage in Makefile This makes it work with non-GNU grep's as well. Signed-off-by: John Spencer Acked-by: Namhyung Kim Link: http://thread.gmane.org/gmane.linux.kernel.perf.user/1686 Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/config/utilities.mak | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/config/utilities.mak b/tools/perf/config/utilities.mak index 4d985e0..7076a62 100644 --- a/tools/perf/config/utilities.mak +++ b/tools/perf/config/utilities.mak @@ -132,7 +132,7 @@ endef # # Usage: bool-value = $(call is-absolute,path) # -is-absolute = $(shell echo $(shell-sq) | grep ^/ -q && echo y) +is-absolute = $(shell echo $(shell-sq) | grep -q ^/ && echo y) # lookup # -- cgit v1.1 From a8fa496092253a6309d46ecfe75eea4ab1d6fd79 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Mon, 15 Sep 2014 15:54:34 -0300 Subject: perf tools: Don't include sys/poll.h directly Include poll.h instead. Fixes the following warning in systems with musl's libc: /usr/include/sys/poll.h:1:2: warning: #warning redirecting incorrect #include to [-Wcpp] Reported-by: John Spencer Cc: Adrian Hunter Cc: David Ahern Cc: Don Zickus Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Mike Galbraith Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://thread.gmane.org/gmane.linux.kernel.perf.user/1687/focus=1690 Link: http://lkml.kernel.org/n/tip-k4ocrq1de3fk146oevy346bi@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/bench/sched-messaging.c | 2 +- tools/perf/builtin-top.c | 2 +- tools/perf/util/util.h | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) (limited to 'tools') diff --git a/tools/perf/bench/sched-messaging.c b/tools/perf/bench/sched-messaging.c index 52a5659..d7f281c 100644 --- a/tools/perf/bench/sched-messaging.c +++ b/tools/perf/bench/sched-messaging.c @@ -26,7 +26,7 @@ #include #include #include -#include +#include #include #include diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index 7da2c46..e13864b 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -59,7 +59,7 @@ #include #include -#include +#include #include #include #include diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h index d6a79b1..6ad2b5e 100644 --- a/tools/perf/util/util.h +++ b/tools/perf/util/util.h @@ -64,7 +64,7 @@ #include #include #include -#include +#include #include #include #include -- cgit v1.1 From 512fe365373b9c95a70b4b6357503ee74d27214f Mon Sep 17 00:00:00 2001 From: Chanho Park Date: Fri, 12 Sep 2014 11:10:17 +0900 Subject: perf tools: define _DEFAULT_SOURCE for glibc_2.20 _BSD_SOURCE was deprecated in favour of _DEFAULT_SOURCE since glibc 2.20[1]. To avoid build warning on glibc2.20, _DEFAULT_SOURCE should also be defined. [1]: https://sourceware.org/glibc/wiki/Release/2.20 Signed-off-by: Chanho Park Cc: Ingo Molnar Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1410487817-13403-1-git-send-email-chanho61.park@samsung.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/util.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'tools') diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h index 6ad2b5e..80bfdaa 100644 --- a/tools/perf/util/util.h +++ b/tools/perf/util/util.h @@ -39,6 +39,8 @@ #define _ALL_SOURCE 1 #define _BSD_SOURCE 1 +/* glibc 2.20 deprecates _BSD_SOURCE in favour of _DEFAULT_SOURCE */ +#define _DEFAULT_SOURCE 1 #define HAS_BOOL #include -- cgit v1.1 From d0b0d0406fe6743e734e1ba780155f8db5f713e6 Mon Sep 17 00:00:00 2001 From: Anton Blanchard Date: Tue, 9 Sep 2014 08:59:29 +1000 Subject: perf symbols: Ignore stripped vmlinux and fallback to kallsyms If a vmlinux is stripped, perf will use it and ignore kallsyms. We end up with useless profiles where everything maps to a few runtime symbols: 63.39% swapper [kernel.kallsyms] [k] hcall_real_table 4.90% beam.smp [kernel.kallsyms] [k] hcall_real_table 4.44% beam.smp [kernel.kallsyms] [k] __sched_text_start 3.72% beam.smp [kernel.kallsyms] [k] __run_at_kexec Detect this case and fallback to using kallsyms. This fixes the issue: 62.81% swapper [kernel.kallsyms] [k] snooze_loop 4.44% beam.smp [kernel.kallsyms] [k] __schedule 0.91% beam.smp [kernel.kallsyms] [k] _switch 0.73% beam.smp [kernel.kallsyms] [k] put_prev_entity Signed-off-by: Anton Blanchard Acked-by: Namhyung Kim Cc: Ingo Molnar Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20140909085929.4a5a81f0@kryten Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/symbol-elf.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'tools') diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c index 9c9b27f..2a92e10 100644 --- a/tools/perf/util/symbol-elf.c +++ b/tools/perf/util/symbol-elf.c @@ -717,6 +717,14 @@ int dso__load_sym(struct dso *dso, struct map *map, symbols__delete(&dso->symbols[map->type]); if (!syms_ss->symtab) { + /* + * If the vmlinux is stripped, fail so we will fall back + * to using kallsyms. The vmlinux runtime symbols aren't + * of much use. + */ + if (dso->kernel) + goto out_elf_end; + syms_ss->symtab = syms_ss->dynsym; syms_ss->symshdr = syms_ss->dynshdr; } -- cgit v1.1 From c657f423aed0d836c807ea1d6d8d28b3914446fa Mon Sep 17 00:00:00 2001 From: Anton Blanchard Date: Mon, 15 Sep 2014 16:57:56 -0300 Subject: perf symbols: Add path to Ubuntu kernel debuginfo file Ubuntu places the kernel debuginfo in /usr/lib/debug/boot/vmlinux-* Signed-off-by: Anton Blanchard Cc: Ingo Molnar Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra echo Link: http://lkml.kernel.org/n/tip-`ranpwd -l 24`@git.kernel.org Link: http://lkml.kernel.org/r/20140909091152.2698c0f7@kryten [ Adapted it to use the perf.data file kernel version as in 0a7e6d1b6844 ] Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/symbol.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c index 1adb143..be84f7a 100644 --- a/tools/perf/util/symbol.c +++ b/tools/perf/util/symbol.c @@ -1757,7 +1757,7 @@ static int vmlinux_path__init(struct perf_session_env *env) char bf[PATH_MAX]; char *kernel_version; - vmlinux_path = malloc(sizeof(char *) * 5); + vmlinux_path = malloc(sizeof(char *) * 6); if (vmlinux_path == NULL) return -1; @@ -1788,6 +1788,12 @@ static int vmlinux_path__init(struct perf_session_env *env) if (vmlinux_path[vmlinux_path__nr_entries] == NULL) goto out_fail; ++vmlinux_path__nr_entries; + snprintf(bf, sizeof(bf), "/usr/lib/debug/boot/vmlinux-%s", + kernel_version); + vmlinux_path[vmlinux_path__nr_entries] = strdup(bf); + if (vmlinux_path[vmlinux_path__nr_entries] == NULL) + goto out_fail; + ++vmlinux_path__nr_entries; snprintf(bf, sizeof(bf), "/lib/modules/%s/build/vmlinux", kernel_version); vmlinux_path[vmlinux_path__nr_entries] = strdup(bf); if (vmlinux_path[vmlinux_path__nr_entries] == NULL) -- cgit v1.1 From 2b394bc4468c2f5e6814a8dbb2a923c0448f8497 Mon Sep 17 00:00:00 2001 From: Masami Hiramatsu Date: Wed, 17 Sep 2014 08:40:54 +0000 Subject: perf probe: Do not access kallsyms when analyzing user binaries Do not access kallsyms to show available variables and show source lines in user binaries. This behavior always requires the root privilege when sysctl sets kernel.kptr_restrict=1, but we don't need it just for analyzing user binaries. Without this patch (by normal user, kptr_restrict=1): ---- $ perf probe -x ./perf -V add_cmdname Failed to init vmlinux path. Error: Failed to show vars. $ perf probe -x ./perf -L add_cmdname Failed to init vmlinux path. Error: Failed to show lines. ---- With this patch: ---- $ perf probe -x ./perf -V add_cmdname Available variables at add_cmdname @ (No matched variables) @ (No matched variables) @ char* name size_t len struct cmdnames* cmds $ perf probe -x ./perf -L add_cmdname 0 void add_cmdname(struct cmdnames *cmds, const char *name, size_t len) 1 { 2 struct cmdname *ent = malloc(sizeof(*ent) + len + 1); 4 ent->len = len; 5 memcpy(ent->name, name, len); 6 ent->name[len] = 0; ... ---- Signed-off-by: Masami Hiramatsu Cc: david lerner Cc: linux-perf-user@vger.kernel.org Cc: yrl.pp-manager.tt@hitachi.com Link: http://lkml.kernel.org/r/20140917084054.3722.73975.stgit@kbuild-f20.novalocal [ Added missing 'bool user' argument to the !DWARF show_line_range() stub ] Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-probe.c | 3 ++- tools/perf/util/probe-event.c | 9 +++++---- tools/perf/util/probe-event.h | 3 ++- 3 files changed, 9 insertions(+), 6 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-probe.c b/tools/perf/builtin-probe.c index 4d6858d..04412b4 100644 --- a/tools/perf/builtin-probe.c +++ b/tools/perf/builtin-probe.c @@ -472,7 +472,8 @@ __cmd_probe(int argc, const char **argv, const char *prefix __maybe_unused) usage_with_options(probe_usage, options); } - ret = show_line_range(¶ms.line_range, params.target); + ret = show_line_range(¶ms.line_range, params.target, + params.uprobes); if (ret < 0) pr_err_with_code(" Error: Failed to show lines.", ret); return ret; diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c index f73595f..be37b5a 100644 --- a/tools/perf/util/probe-event.c +++ b/tools/perf/util/probe-event.c @@ -697,11 +697,11 @@ end: return ret; } -int show_line_range(struct line_range *lr, const char *module) +int show_line_range(struct line_range *lr, const char *module, bool user) { int ret; - ret = init_symbol_maps(false); + ret = init_symbol_maps(user); if (ret < 0) return ret; ret = __show_line_range(lr, module); @@ -776,7 +776,7 @@ int show_available_vars(struct perf_probe_event *pevs, int npevs, int i, ret = 0; struct debuginfo *dinfo; - ret = init_symbol_maps(false); + ret = init_symbol_maps(pevs->uprobes); if (ret < 0) return ret; @@ -822,7 +822,8 @@ static int try_to_find_probe_trace_events(struct perf_probe_event *pev, } int show_line_range(struct line_range *lr __maybe_unused, - const char *module __maybe_unused) + const char *module __maybe_unused, + bool user __maybe_unused) { pr_warning("Debuginfo-analysis is not supported.\n"); return -ENOSYS; diff --git a/tools/perf/util/probe-event.h b/tools/perf/util/probe-event.h index 776c934..e01e994 100644 --- a/tools/perf/util/probe-event.h +++ b/tools/perf/util/probe-event.h @@ -128,7 +128,8 @@ extern int add_perf_probe_events(struct perf_probe_event *pevs, int npevs, bool force_add); extern int del_perf_probe_events(struct strlist *dellist); extern int show_perf_probe_events(void); -extern int show_line_range(struct line_range *lr, const char *module); +extern int show_line_range(struct line_range *lr, const char *module, + bool user); extern int show_available_vars(struct perf_probe_event *pevs, int npevs, int max_probe_points, const char *module, struct strfilter *filter, bool externs); -- cgit v1.1 From 664fee3dc37939bb8010906913fa9dbc52abb587 Mon Sep 17 00:00:00 2001 From: Masami Hiramatsu Date: Wed, 17 Sep 2014 08:41:01 +0000 Subject: perf probe: Do not use dwfl_module_addrsym if dwarf_diename finds symbol name Do not use dwfl_module_addrsym if dwarf_diename can find the symbol name, since dwfl_module_addrsym can be failed on shared libraries. Without this patch ---- $ perf probe -x ../lib/traceevent/libtraceevent.so -V create_arg_op Failed to find symbol at 0x11df1 Failed to find the address of create_arg_op Error: Failed to show vars. ---- With this patch ---- $ perf probe -x ../lib/traceevent/libtraceevent.so -V create_arg_op Available variables at create_arg_op @ enum filter_op_type btype struct filter_arg* arg ---- This bug was reported on linux-perf-users@vger.kernel.org. Reported-by: david lerner Signed-off-by: Masami Hiramatsu Cc: david lerner Cc: linux-perf-user@vger.kernel.org Cc: yrl.pp-manager.tt@hitachi.com Link: http://permalink.gmane.org/gmane.linux.kernel.perf.user/1691 Link: http://lkml.kernel.org/r/20140917084101.3722.25299.stgit@kbuild-f20.novalocal Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/probe-finder.c | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/probe-finder.c b/tools/perf/util/probe-finder.c index 9c59356..c7918f8 100644 --- a/tools/perf/util/probe-finder.c +++ b/tools/perf/util/probe-finder.c @@ -609,14 +609,18 @@ static int convert_to_trace_point(Dwarf_Die *sp_die, Dwfl_Module *mod, return -EINVAL; } - /* Get an appropriate symbol from symtab */ - symbol = dwfl_module_addrsym(mod, paddr, &sym, NULL); + symbol = dwarf_diename(sp_die); if (!symbol) { - pr_warning("Failed to find symbol at 0x%lx\n", - (unsigned long)paddr); - return -ENOENT; + /* Try to get the symbol name from symtab */ + symbol = dwfl_module_addrsym(mod, paddr, &sym, NULL); + if (!symbol) { + pr_warning("Failed to find symbol at 0x%lx\n", + (unsigned long)paddr); + return -ENOENT; + } + eaddr = sym.st_value; } - tp->offset = (unsigned long)(paddr - sym.st_value); + tp->offset = (unsigned long)(paddr - eaddr); tp->address = (unsigned long)paddr; tp->symbol = strdup(symbol); if (!tp->symbol) -- cgit v1.1 From e5685730e2c620f97bc12380e9370e857e5bd7a7 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Wed, 17 Sep 2014 16:42:58 -0300 Subject: perf record: Use ring buffer consume method to look like other tools All builtins that consume events from perf's ring buffer now end up calling perf_evlist__mmap_consume(), which will allow unmapping the ring buffer when all the fds gets closed and all events in the buffer consumed. This is in preparation for the patchkit that will notice POLLHUP on perf events file descriptors. Cc: Adrian Hunter Cc: David Ahern Cc: Don Zickus Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Mike Galbraith Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-8vhaeeoq11ppz0713el4xcps@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-record.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index 87e28a4..a1b0403 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -65,8 +65,9 @@ static int process_synthesized_event(struct perf_tool *tool, return record__write(rec, event, event->header.size); } -static int record__mmap_read(struct record *rec, struct perf_mmap *md) +static int record__mmap_read(struct record *rec, int idx) { + struct perf_mmap *md = &rec->evlist->mmap[idx]; unsigned int head = perf_mmap__read_head(md); unsigned int old = md->prev; unsigned char *data = md->base + page_size; @@ -102,8 +103,7 @@ static int record__mmap_read(struct record *rec, struct perf_mmap *md) } md->prev = old; - perf_mmap__write_tail(md, old); - + perf_evlist__mmap_consume(rec->evlist, idx); out: return rc; } @@ -245,7 +245,7 @@ static int record__mmap_read_all(struct record *rec) for (i = 0; i < rec->evlist->nr_mmaps; i++) { if (rec->evlist->mmap[i].base) { - if (record__mmap_read(rec, &rec->evlist->mmap[i]) != 0) { + if (record__mmap_read(rec, i) != 0) { rc = -1; goto out; } -- cgit v1.1 From 1ddec7f0d0ab5b71cf2cc5a782441c20e7afbcfb Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Tue, 12 Aug 2014 23:04:11 -0300 Subject: perf evlist: Introduce perf_evlist__filter_pollfd method To remove all entries in evlist->pollfd[] that have revents matching at least one of the bits in the specified mask. It'll adjust evlist->nr_fds to the number of unfiltered fds and will return this value, as a convenience and to avoid requiring direct access to internal state of perf_evlist objects. This will be used after polling the evlist fds so that we remove fds that were closed by the kernel. Acked-by: Jiri Olsa Cc: Adrian Hunter Cc: David Ahern Cc: Don Zickus Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Mike Galbraith Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-y2sca7z3wicvvy40a50lozwm@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/evlist.c | 21 +++++++++++++++++++++ tools/perf/util/evlist.h | 2 ++ 2 files changed, 23 insertions(+) (limited to 'tools') diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index a3e28b4..023bc38 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -428,6 +428,27 @@ void perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd) evlist->nr_fds++; } +int perf_evlist__filter_pollfd(struct perf_evlist *evlist, short revents_and_mask) +{ + int fd, nr_fds = 0; + + if (evlist->nr_fds == 0) + return 0; + + for (fd = 0; fd < evlist->nr_fds; ++fd) { + if (evlist->pollfd[fd].revents & revents_and_mask) + continue; + + if (fd != nr_fds) + evlist->pollfd[nr_fds] = evlist->pollfd[fd]; + + ++nr_fds; + } + + evlist->nr_fds = nr_fds; + return nr_fds; +} + static void perf_evlist__id_hash(struct perf_evlist *evlist, struct perf_evsel *evsel, int cpu, int thread, u64 id) diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h index 106de53..1082420 100644 --- a/tools/perf/util/evlist.h +++ b/tools/perf/util/evlist.h @@ -84,6 +84,8 @@ void perf_evlist__id_add(struct perf_evlist *evlist, struct perf_evsel *evsel, void perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd); +int perf_evlist__filter_pollfd(struct perf_evlist *evlist, short revents_and_mask); + struct perf_evsel *perf_evlist__id2evsel(struct perf_evlist *evlist, u64 id); struct perf_sample_id *perf_evlist__id2sid(struct perf_evlist *evlist, u64 id); -- cgit v1.1 From 54dbfae3007b0c61727abba45af1e4c226908d82 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Tue, 12 Aug 2014 23:34:06 -0300 Subject: perf tests: Add test for perf_evlist__filter_pollfd() That will use a synthetic evlist with just what is touched by this new method to check that it works as expected. Output in verbose mode: $ perf test -v pollfd 33: Filter fds with revents mask in a pollfd array : --- start --- filtering all but pollfd[2]: before: 5 [ 5, 4, 3, 2, 1 ] after: 1 [ 3 ] filtering all but (pollfd[0], pollfd[3]): before: 5 [ 5, 4, 3, 2, 1 ] after: 2 [ 5, 2 ] test child finished with 0 ---- end ---- Filter fds with revents mask in a pollfd array: Ok $ Acked-by: Jiri Olsa Cc: Adrian Hunter Cc: David Ahern Cc: Don Zickus Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Mike Galbraith Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-x7c8liszdvc3ocmanf2cet8p@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/Makefile.perf | 1 + tools/perf/tests/builtin-test.c | 4 ++ tools/perf/tests/evlist.c | 103 ++++++++++++++++++++++++++++++++++++++++ tools/perf/tests/tests.h | 1 + 4 files changed, 109 insertions(+) create mode 100644 tools/perf/tests/evlist.c (limited to 'tools') diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf index 171f4e6..f287c25 100644 --- a/tools/perf/Makefile.perf +++ b/tools/perf/Makefile.perf @@ -400,6 +400,7 @@ LIB_OBJS += $(OUTPUT)tests/open-syscall-tp-fields.o LIB_OBJS += $(OUTPUT)tests/mmap-basic.o LIB_OBJS += $(OUTPUT)tests/perf-record.o LIB_OBJS += $(OUTPUT)tests/rdpmc.o +LIB_OBJS += $(OUTPUT)tests/evlist.o LIB_OBJS += $(OUTPUT)tests/evsel-roundtrip-name.o LIB_OBJS += $(OUTPUT)tests/evsel-tp-sched.o LIB_OBJS += $(OUTPUT)tests/pmu.o diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c index 6a4145e..41e556e 100644 --- a/tools/perf/tests/builtin-test.c +++ b/tools/perf/tests/builtin-test.c @@ -158,6 +158,10 @@ static struct test { .func = test__switch_tracking, }, { + .desc = "Filter fds with revents mask in a pollfd array", + .func = test__perf_evlist__filter_pollfd, + }, + { .func = NULL, }, }; diff --git a/tools/perf/tests/evlist.c b/tools/perf/tests/evlist.c new file mode 100644 index 0000000..7757915 --- /dev/null +++ b/tools/perf/tests/evlist.c @@ -0,0 +1,103 @@ +#include "util/evlist.h" +#include "util/debug.h" +#include "tests/tests.h" + +static void perf_evlist__init_pollfd(struct perf_evlist *evlist, + int nr_fds_alloc, short revents) +{ + int fd; + + evlist->nr_fds = nr_fds_alloc; + + for (fd = 0; fd < nr_fds_alloc; ++fd) { + evlist->pollfd[fd].fd = nr_fds_alloc - fd; + evlist->pollfd[fd].revents = revents; + } +} + +static int perf_evlist__fprintf_pollfd(struct perf_evlist *evlist, + const char *prefix, FILE *fp) +{ + int printed = 0, fd; + + if (!verbose) + return 0; + + printed += fprintf(fp, "\n%s: %3d [ ", prefix, evlist->nr_fds); + for (fd = 0; fd < evlist->nr_fds; ++fd) + printed += fprintf(fp, "%s%d", fd ? ", " : "", evlist->pollfd[fd].fd); + printed += fprintf(fp, " ]"); + return printed; +} + +int test__perf_evlist__filter_pollfd(void) +{ + const int nr_fds_alloc = 5; + int nr_fds, expected_fd[2], fd; + struct pollfd pollfd[nr_fds_alloc]; + struct perf_evlist evlist_alloc = { + .pollfd = pollfd, + }, *evlist = &evlist_alloc; + + perf_evlist__init_pollfd(evlist, nr_fds_alloc, POLLIN); + nr_fds = perf_evlist__filter_pollfd(evlist, POLLHUP); + if (nr_fds != nr_fds_alloc) { + pr_debug("\nperf_evlist__filter_pollfd()=%d != %d shouldn't have filtered anything", + nr_fds, nr_fds_alloc); + return TEST_FAIL; + } + + perf_evlist__init_pollfd(evlist, nr_fds_alloc, POLLHUP); + nr_fds = perf_evlist__filter_pollfd(evlist, POLLHUP); + if (nr_fds != 0) { + pr_debug("\nperf_evlist__filter_pollfd()=%d != %d, should have filtered all fds", + nr_fds, nr_fds_alloc); + return TEST_FAIL; + } + + perf_evlist__init_pollfd(evlist, nr_fds_alloc, POLLHUP); + pollfd[2].revents = POLLIN; + expected_fd[0] = pollfd[2].fd; + + pr_debug("\nfiltering all but pollfd[2]:"); + perf_evlist__fprintf_pollfd(evlist, "before", stderr); + nr_fds = perf_evlist__filter_pollfd(evlist, POLLHUP); + perf_evlist__fprintf_pollfd(evlist, " after", stderr); + if (nr_fds != 1) { + pr_debug("\nperf_evlist__filter_pollfd()=%d != 1, should have left just one event", + nr_fds); + return TEST_FAIL; + } + + if (pollfd[0].fd != expected_fd[0]) { + pr_debug("\npollfd[0].fd=%d != %d\n", pollfd[0].fd, expected_fd[0]); + return TEST_FAIL; + } + + perf_evlist__init_pollfd(evlist, nr_fds_alloc, POLLHUP); + pollfd[0].revents = POLLIN; + expected_fd[0] = pollfd[0].fd; + pollfd[3].revents = POLLIN; + expected_fd[1] = pollfd[3].fd; + + pr_debug("\nfiltering all but (pollfd[0], pollfd[3]):"); + perf_evlist__fprintf_pollfd(evlist, "before", stderr); + nr_fds = perf_evlist__filter_pollfd(evlist, POLLHUP); + perf_evlist__fprintf_pollfd(evlist, " after", stderr); + if (nr_fds != 2) { + pr_debug("\nperf_evlist__filter_pollfd()=%d != 2, should have left just two events", + nr_fds); + return TEST_FAIL; + } + + for (fd = 0; fd < 2; ++fd) { + if (pollfd[fd].fd != expected_fd[fd]) { + pr_debug("\npollfd[%d].fd=%d != %d\n", fd, pollfd[fd].fd, expected_fd[fd]); + return TEST_FAIL; + } + } + + pr_debug("\n"); + + return 0; +} diff --git a/tools/perf/tests/tests.h b/tools/perf/tests/tests.h index be8be10..72c4c03 100644 --- a/tools/perf/tests/tests.h +++ b/tools/perf/tests/tests.h @@ -49,6 +49,7 @@ int test__thread_mg_share(void); int test__hists_output(void); int test__hists_cumulate(void); int test__switch_tracking(void); +int test__perf_evlist__filter_pollfd(void); #if defined(__x86_64__) || defined(__i386__) || defined(__arm__) #ifdef HAVE_DWARF_UNWIND_SUPPORT -- cgit v1.1 From 8179672c2f7b9c41a7ef3e8c907d214fa92ed614 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Wed, 13 Aug 2014 11:26:21 -0300 Subject: perf evlist: Monitor POLLERR and POLLHUP events too We want to know when the fd went away, like when a monitored thread exits. If we do not monitor such events, then the tools will wait forever on events from a vanished thread, like when running: $ sleep 5s & $ perf record -p `pidof sleep` This builds upon the kernel patch by Jiri Olsa that actually makes a poll on those file descriptors to return POLLHUP. It is also needed to change the tools to use perf_evlist__filter_pollfd() to check if there are remainings fds to monitor or if all are gone, in which case they will exit the poll/mmap/read loop. Acked-by: Jiri Olsa Cc: Adrian Hunter Cc: David Ahern Cc: Don Zickus Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Mike Galbraith Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-a4fslwspov0bs69nj825hqpq@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/evlist.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index 023bc38..502cd11 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -424,7 +424,7 @@ void perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd) { fcntl(fd, F_SETFL, O_NONBLOCK); evlist->pollfd[evlist->nr_fds].fd = fd; - evlist->pollfd[evlist->nr_fds].events = POLLIN; + evlist->pollfd[evlist->nr_fds].events = POLLIN | POLLERR | POLLHUP; evlist->nr_fds++; } -- cgit v1.1 From 033fa713db66b96d5779e6a93d50ff821bc1abd2 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Mon, 8 Sep 2014 12:55:12 -0300 Subject: perf evlist: We need to poll all event file descriptors Because we want to notice when they get POLLHUP'ed, so that we can figure out when all threads exited in a workload being monitored. We can't just monitor the fds that were mmaped, we need to notice when all the fds that were PERF_EVENT_IOC_SET_OUTPUT'ed too, because the mmap stays even after the fd that originally was used to do the mmap call went away, its only when all the set-output fds for a mmap are gone that the mmap is. Cc: Adrian Hunter Cc: David Ahern Cc: Don Zickus Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Mike Galbraith Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/20140908151016.GH17728@krava.brq.redhat.com Link: http://lkml.kernel.org/n/tip-24omlq5asrfg4uo3muuzn2bl@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/evlist.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index 502cd11..6b13bfa 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -717,8 +717,6 @@ static int __perf_evlist__mmap(struct perf_evlist *evlist, int idx, evlist->mmap[idx].base = NULL; return -1; } - - perf_evlist__add_pollfd(evlist, fd); return 0; } @@ -745,6 +743,8 @@ static int perf_evlist__mmap_per_evsel(struct perf_evlist *evlist, int idx, return -1; } + perf_evlist__add_pollfd(evlist, fd); + if ((evsel->attr.read_format & PERF_FORMAT_ID) && perf_evlist__id_add_fd(evlist, evsel, cpu, thread, fd) < 0) return -1; -- cgit v1.1 From ad6765dd3b2f043e819bdec565db8f5a2f781e06 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Mon, 18 Aug 2014 16:44:06 -0300 Subject: perf evlist: Allow growing pollfd on add method This way we will be able to add more file descriptors to be polled, like stdin or some timer fd. At this point we might as well yank the pollfd class from evlist so that it can be used in other places. Cc: Adrian Hunter Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jean Pihet Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/n/tip-o2mzsjl7taumsoc35ryol00i@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/evlist.c | 38 +++++++++++++++++++++++++++++++++----- tools/perf/util/evlist.h | 5 +++-- 2 files changed, 36 insertions(+), 7 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index 6b13bfa..bcf157c 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -402,7 +402,21 @@ int perf_evlist__enable_event_idx(struct perf_evlist *evlist, return perf_evlist__enable_event_thread(evlist, evsel, idx); } -static int perf_evlist__alloc_pollfd(struct perf_evlist *evlist) +static int perf_evlist__grow_pollfd(struct perf_evlist *evlist, int hint) +{ + int nr_fds_alloc = evlist->nr_fds_alloc + hint; + size_t size = sizeof(struct pollfd) * nr_fds_alloc; + struct pollfd *pollfd = realloc(evlist->pollfd, size); + + if (pollfd == NULL) + return -ENOMEM; + + evlist->nr_fds_alloc = nr_fds_alloc; + evlist->pollfd = pollfd; + return 0; +} + +int perf_evlist__alloc_pollfd(struct perf_evlist *evlist) { int nr_cpus = cpu_map__nr(evlist->cpus); int nr_threads = thread_map__nr(evlist->threads); @@ -416,16 +430,28 @@ static int perf_evlist__alloc_pollfd(struct perf_evlist *evlist) nfds += nr_cpus * nr_threads; } - evlist->pollfd = malloc(sizeof(struct pollfd) * nfds); - return evlist->pollfd != NULL ? 0 : -ENOMEM; + if (evlist->nr_fds_alloc - evlist->nr_fds < nfds && + perf_evlist__grow_pollfd(evlist, nfds) < 0) + return -ENOMEM; + + return 0; } -void perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd) +int perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd) { + /* + * XXX: 64 is arbitrary, just not to call realloc at each fd. + * Find a better autogrowing heuristic + */ + if (evlist->nr_fds == evlist->nr_fds_alloc && + perf_evlist__grow_pollfd(evlist, 64) < 0) + return -ENOMEM; + fcntl(fd, F_SETFL, O_NONBLOCK); evlist->pollfd[evlist->nr_fds].fd = fd; evlist->pollfd[evlist->nr_fds].events = POLLIN | POLLERR | POLLHUP; evlist->nr_fds++; + return 0; } int perf_evlist__filter_pollfd(struct perf_evlist *evlist, short revents_and_mask) @@ -717,6 +743,7 @@ static int __perf_evlist__mmap(struct perf_evlist *evlist, int idx, evlist->mmap[idx].base = NULL; return -1; } + return 0; } @@ -743,7 +770,8 @@ static int perf_evlist__mmap_per_evsel(struct perf_evlist *evlist, int idx, return -1; } - perf_evlist__add_pollfd(evlist, fd); + if (perf_evlist__add_pollfd(evlist, fd) < 0) + return -1; if ((evsel->attr.read_format & PERF_FORMAT_ID) && perf_evlist__id_add_fd(evlist, evsel, cpu, thread, fd) < 0) diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h index 1082420..bbc2fd0 100644 --- a/tools/perf/util/evlist.h +++ b/tools/perf/util/evlist.h @@ -30,6 +30,7 @@ struct perf_evlist { int nr_entries; int nr_groups; int nr_fds; + int nr_fds_alloc; int nr_mmaps; size_t mmap_len; int id_pos; @@ -82,8 +83,8 @@ perf_evlist__find_tracepoint_by_name(struct perf_evlist *evlist, void perf_evlist__id_add(struct perf_evlist *evlist, struct perf_evsel *evsel, int cpu, int thread, u64 id); -void perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd); - +int perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd); +int perf_evlist__alloc_pollfd(struct perf_evlist *evlist); int perf_evlist__filter_pollfd(struct perf_evlist *evlist, short revents_and_mask); struct perf_evsel *perf_evlist__id2evsel(struct perf_evlist *evlist, u64 id); -- cgit v1.1 From 9ae28035b8677b82e1d71cea4f793cb5504ec104 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Mon, 18 Aug 2014 16:49:00 -0300 Subject: perf tests: Add pollfd growing test [acme@ssdandy linux]$ perf test "Add fd" 34: Add fd to pollfd array, making it autogrow : Ok [acme@ssdandy linux]$ perf test -v "Add fd" 34: Add fd to pollfd array, making it autogrow : --- start --- test child forked, pid 19817 before growing array: 2 [ 1, 2 ] after 3rd add_pollfd: 3 [ 1, 2, 35 ] after 4th add_pollfd: 4 [ 1, 2, 35, 88 ] test child finished with 0 ---- end ---- Add fd to pollfd array, making it autogrow: Ok [acme@ssdandy linux]$ Acked-by: Jiri Olsa Cc: Adrian Hunter Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jean Pihet Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/n/tip-smflpyta146bzog7z0effjss@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/tests/builtin-test.c | 4 ++ tools/perf/tests/evlist.c | 111 ++++++++++++++++++++++++++++++++++++++++ tools/perf/tests/tests.h | 1 + 3 files changed, 116 insertions(+) (limited to 'tools') diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c index 41e556e..174c3ff 100644 --- a/tools/perf/tests/builtin-test.c +++ b/tools/perf/tests/builtin-test.c @@ -162,6 +162,10 @@ static struct test { .func = test__perf_evlist__filter_pollfd, }, { + .desc = "Add fd to pollfd array, making it autogrow", + .func = test__perf_evlist__add_pollfd, + }, + { .func = NULL, }, }; diff --git a/tools/perf/tests/evlist.c b/tools/perf/tests/evlist.c index 7757915..99d7dfd 100644 --- a/tools/perf/tests/evlist.c +++ b/tools/perf/tests/evlist.c @@ -1,5 +1,7 @@ #include "util/evlist.h" #include "util/debug.h" +#include "util/thread_map.h" +#include "util/cpumap.h" #include "tests/tests.h" static void perf_evlist__init_pollfd(struct perf_evlist *evlist, @@ -101,3 +103,112 @@ int test__perf_evlist__filter_pollfd(void) return 0; } + +int test__perf_evlist__add_pollfd(void) +{ + struct perf_evsel evsel = { + .system_wide = false, + }; + struct thread_map threads = { + .nr = 2, + }; + struct perf_evlist evlist_alloc = { + .pollfd = NULL, + .threads = &threads, + }, *evlist = &evlist_alloc; + + INIT_LIST_HEAD(&evlist->entries); + list_add(&evsel.node, &evlist->entries); + + if (perf_evlist__alloc_pollfd(evlist) < 0) { + pr_debug("\nperf_evlist__alloc_pollfd(evlist) failed!"); + return TEST_FAIL; + } + + if (evlist->nr_fds_alloc != threads.nr) { + pr_debug("\n_evlist__alloc_pollfd: nr_fds_alloc=%d != (threads->nr(%d) * cpu_map->nr(%d))=%d", + evlist->nr_fds_alloc, thread_map__nr(evlist->threads), cpu_map__nr(evlist->cpus), + thread_map__nr(evlist->threads) * cpu_map__nr(evlist->cpus)); + return TEST_FAIL; + } + + if (perf_evlist__add_pollfd(evlist, 1) < 0) { + pr_debug("\nperf_evlist__add_pollfd(evlist, 1) failed!"); + return TEST_FAIL; + } + + if (evlist->nr_fds != 1) { + pr_debug("\nperf_evlist__add_pollfd(evlist, 1)=%d != 1", evlist->nr_fds); + return TEST_FAIL; + } + + if (perf_evlist__add_pollfd(evlist, 2) < 0) { + pr_debug("\nperf_evlist__add_pollfd(evlist, 2) failed!"); + return TEST_FAIL; + } + + if (evlist->nr_fds != 2) { + pr_debug("\nperf_evlist__add_pollfd(evlist, 2)=%d != 2", evlist->nr_fds); + return TEST_FAIL; + } + + perf_evlist__fprintf_pollfd(evlist, "before growing array", stderr); + + if (perf_evlist__add_pollfd(evlist, 35) < 0) { + pr_debug("\nperf_evlist__add_pollfd(evlist, 35) failed!"); + return TEST_FAIL; + } + + if (evlist->nr_fds != 3) { + pr_debug("\nperf_evlist__add_pollfd(evlist, 35)=%d != 3", evlist->nr_fds); + return TEST_FAIL; + } + + if (evlist->pollfd == NULL) { + pr_debug("\nperf_evlist__add_pollfd(evlist, 35) should have allocated evlist->pollfd!"); + return TEST_FAIL; + } + + perf_evlist__fprintf_pollfd(evlist, "after 3rd add_pollfd", stderr); + + if (evlist->pollfd[2].fd != 35) { + pr_debug("\nevlist->pollfd[2](%d) != 35!", evlist->pollfd[2].fd); + return TEST_FAIL; + } + + if (perf_evlist__add_pollfd(evlist, 88) < 0) { + pr_debug("\nperf_evlist__add_pollfd(evlist, 88) failed!"); + return TEST_FAIL; + } + + if (evlist->nr_fds != 4) { + pr_debug("\nperf_evlist__add_pollfd(evlist, 88)=%d != 2", evlist->nr_fds); + return TEST_FAIL; + } + + perf_evlist__fprintf_pollfd(evlist, "after 4th add_pollfd", stderr); + + if (evlist->pollfd[0].fd != 1) { + pr_debug("\nevlist->pollfd[0](%d) != 1!", evlist->pollfd[0].fd); + return TEST_FAIL; + } + + if (evlist->pollfd[1].fd != 2) { + pr_debug("\nevlist->pollfd[1](%d) != 2!", evlist->pollfd[1].fd); + return TEST_FAIL; + } + + if (evlist->pollfd[2].fd != 35) { + pr_debug("\nevlist->pollfd[2](%d) != 35!", evlist->pollfd[2].fd); + return TEST_FAIL; + } + + if (evlist->pollfd[3].fd != 88) { + pr_debug("\nevlist->pollfd[3](%d) != 88!", evlist->pollfd[3].fd); + return TEST_FAIL; + } + + pr_debug("\n"); + + return 0; +} diff --git a/tools/perf/tests/tests.h b/tools/perf/tests/tests.h index 72c4c03..699d4bb 100644 --- a/tools/perf/tests/tests.h +++ b/tools/perf/tests/tests.h @@ -50,6 +50,7 @@ int test__hists_output(void); int test__hists_cumulate(void); int test__switch_tracking(void); int test__perf_evlist__filter_pollfd(void); +int test__perf_evlist__add_pollfd(void); #if defined(__x86_64__) || defined(__i386__) || defined(__arm__) #ifdef HAVE_DWARF_UNWIND_SUPPORT -- cgit v1.1 From 0a04c9e0b2181aff8348b5e80d9d96ec8df1ffb3 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Mon, 18 Aug 2014 17:12:30 -0300 Subject: perf kvm stat live: Use perf_evlist__add_pollfd() instead of local equivalent Since we can add file descriptors to the evlist pollfd and it will autogrow, no need to copy all events to a local pollfd array, just add the timer and stdin file descriptors. Reviewed-by: David Ahern Acked-by: Jiri Olsa Cc: Adrian Hunter Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jean Pihet Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/n/tip-2hvp9iromiheh6rl4oaa08x5@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-kvm.c | 22 +++++++++------------- 1 file changed, 9 insertions(+), 13 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c index f5d3ae4..a440219 100644 --- a/tools/perf/builtin-kvm.c +++ b/tools/perf/builtin-kvm.c @@ -919,15 +919,8 @@ static int kvm_events_live_report(struct perf_kvm_stat *kvm) signal(SIGINT, sig_handler); signal(SIGTERM, sig_handler); - /* copy pollfds -- need to add timerfd and stdin */ + /* use pollfds -- need to add timerfd and stdin */ nr_fds = kvm->evlist->nr_fds; - pollfds = zalloc(sizeof(struct pollfd) * (nr_fds + 2)); - if (!pollfds) { - err = -ENOMEM; - goto out; - } - memcpy(pollfds, kvm->evlist->pollfd, - sizeof(struct pollfd) * kvm->evlist->nr_fds); /* add timer fd */ if (perf_kvm__timerfd_create(kvm) < 0) { @@ -935,17 +928,21 @@ static int kvm_events_live_report(struct perf_kvm_stat *kvm) goto out; } - pollfds[nr_fds].fd = kvm->timerfd; - pollfds[nr_fds].events = POLLIN; + if (perf_evlist__add_pollfd(kvm->evlist, kvm->timerfd)) + goto out; + nr_fds++; - pollfds[nr_fds].fd = fileno(stdin); - pollfds[nr_fds].events = POLLIN; + if (perf_evlist__add_pollfd(kvm->evlist, fileno(stdin))) + goto out; + nr_stdin = nr_fds; nr_fds++; if (fd_set_nonblock(fileno(stdin)) != 0) goto out; + pollfds = kvm->evlist->pollfd; + /* everything is good - enable the events and process */ perf_evlist__enable(kvm->evlist); @@ -979,7 +976,6 @@ out: close(kvm->timerfd); tcsetattr(0, TCSAFLUSH, &save); - free(pollfds); return err; } -- cgit v1.1 From f66a889dbc96dd342c87232d74f0956076707746 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Mon, 18 Aug 2014 17:25:59 -0300 Subject: perf evlist: Introduce poll method for common code idiom Since we have access two evlist members in all these poll calls, provide a helper. This will also help to make the patch introducing the pollfd class more clear, as the evlist specific uses will be hiden away perf_evlist__poll(). Acked-by: Jiri Olsa Cc: Adrian Hunter Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jean Pihet Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/n/tip-jr9d4aop4lvy9453qahbcgp0@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-record.c | 2 +- tools/perf/builtin-top.c | 4 ++-- tools/perf/builtin-trace.c | 2 +- tools/perf/tests/open-syscall-tp-fields.c | 2 +- tools/perf/tests/perf-record.c | 2 +- tools/perf/tests/task-exit.c | 2 +- tools/perf/util/evlist.c | 5 +++++ tools/perf/util/evlist.h | 2 ++ tools/perf/util/python.c | 2 +- 9 files changed, 15 insertions(+), 8 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index a1b0403..a8c2e9d 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -459,7 +459,7 @@ static int __cmd_record(struct record *rec, int argc, const char **argv) if (hits == rec->samples) { if (done) break; - err = poll(rec->evlist->pollfd, rec->evlist->nr_fds, -1); + err = perf_evlist__poll(rec->evlist, -1); /* * Propagate error, only if there's any. Ignore positive * number of returned events and interrupt error. diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index e13864b..832fb52 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -964,7 +964,7 @@ static int __cmd_top(struct perf_top *top) perf_evlist__enable(top->evlist); /* Wait for a minimal set of events before starting the snapshot */ - poll(top->evlist->pollfd, top->evlist->nr_fds, 100); + perf_evlist__poll(top->evlist, 100); perf_top__mmap_read(top); @@ -991,7 +991,7 @@ static int __cmd_top(struct perf_top *top) perf_top__mmap_read(top); if (hits == top->samples) - ret = poll(top->evlist->pollfd, top->evlist->nr_fds, 100); + ret = perf_evlist__poll(top->evlist, 100); } ret = 0; diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index a9e96ff..b8fedf3 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -2171,7 +2171,7 @@ next_event: if (trace->nr_events == before) { int timeout = done ? 100 : -1; - if (poll(evlist->pollfd, evlist->nr_fds, timeout) > 0) + if (perf_evlist__poll(evlist, timeout) > 0) goto again; } else { goto again; diff --git a/tools/perf/tests/open-syscall-tp-fields.c b/tools/perf/tests/open-syscall-tp-fields.c index 922bdb6..127dcae 100644 --- a/tools/perf/tests/open-syscall-tp-fields.c +++ b/tools/perf/tests/open-syscall-tp-fields.c @@ -105,7 +105,7 @@ int test__syscall_open_tp_fields(void) } if (nr_events == before) - poll(evlist->pollfd, evlist->nr_fds, 10); + perf_evlist__poll(evlist, 10); if (++nr_polls > 5) { pr_debug("%s: no events!\n", __func__); diff --git a/tools/perf/tests/perf-record.c b/tools/perf/tests/perf-record.c index 2ce753c..7a228a2 100644 --- a/tools/perf/tests/perf-record.c +++ b/tools/perf/tests/perf-record.c @@ -268,7 +268,7 @@ int test__PERF_RECORD(void) * perf_event_attr.wakeup_events, just PERF_EVENT_SAMPLE does. */ if (total_events == before && false) - poll(evlist->pollfd, evlist->nr_fds, -1); + perf_evlist__poll(evlist, -1); sleep(1); if (++wakeups > 5) { diff --git a/tools/perf/tests/task-exit.c b/tools/perf/tests/task-exit.c index 87522f0..3a8fedef 100644 --- a/tools/perf/tests/task-exit.c +++ b/tools/perf/tests/task-exit.c @@ -105,7 +105,7 @@ retry: } if (!exited || !nr_exit) { - poll(evlist->pollfd, evlist->nr_fds, -1); + perf_evlist__poll(evlist, -1); goto retry; } diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index bcf157c..5ff3c66 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -475,6 +475,11 @@ int perf_evlist__filter_pollfd(struct perf_evlist *evlist, short revents_and_mas return nr_fds; } +int perf_evlist__poll(struct perf_evlist *evlist, int timeout) +{ + return poll(evlist->pollfd, evlist->nr_fds, timeout); +} + static void perf_evlist__id_hash(struct perf_evlist *evlist, struct perf_evsel *evsel, int cpu, int thread, u64 id) diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h index bbc2fd0..d7e99b6 100644 --- a/tools/perf/util/evlist.h +++ b/tools/perf/util/evlist.h @@ -87,6 +87,8 @@ int perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd); int perf_evlist__alloc_pollfd(struct perf_evlist *evlist); int perf_evlist__filter_pollfd(struct perf_evlist *evlist, short revents_and_mask); +int perf_evlist__poll(struct perf_evlist *evlist, int timeout); + struct perf_evsel *perf_evlist__id2evsel(struct perf_evlist *evlist, u64 id); struct perf_sample_id *perf_evlist__id2sid(struct perf_evlist *evlist, u64 id); diff --git a/tools/perf/util/python.c b/tools/perf/util/python.c index 12aa9b0..4472f8b 100644 --- a/tools/perf/util/python.c +++ b/tools/perf/util/python.c @@ -736,7 +736,7 @@ static PyObject *pyrf_evlist__poll(struct pyrf_evlist *pevlist, if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|i", kwlist, &timeout)) return NULL; - n = poll(evlist->pollfd, evlist->nr_fds, timeout); + n = perf_evlist__poll(evlist, timeout); if (n < 0) { PyErr_SetFromErrno(PyExc_OSError); return NULL; -- cgit v1.1 From 1b85337d0685d1dc5a6f9061434ba4316d69f3b8 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Wed, 3 Sep 2014 18:02:59 -0300 Subject: tools lib api: Adopt fdarray class from perf's evlist The extensible file description array that grew in the perf_evlist class can be useful for other tools, as it is not something that only evlists need, so move it to tools/lib/api/fd to ease sharing it. v2: Don't use {} like in: libapi_dirs: $(QUIET_MKDIR)mkdir -p $(OUTPUT){fs,fd}/ in Makefiles, as it will not work in some systems, as in ubuntu13.10. v3: Add fd/*.[ch] to LIBAPIKFS_SOURCES (Fix from Jiri Olsa) v4: Leave the fcntl(fd, O_NONBLOCK) in the evlist layer, remains to be checked if it is really needed there, but has no place in the fdarray class (Fix from Jiri Olsa) v5: Remove evlist details from fdarray grow/filter tests. Improve it a bit doing more tests about expected internal state. Cc: Adrian Hunter Cc: Borislav Petkov Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jean Pihet Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/n/tip-kleuni3hckbc3s0lu6yb9x40@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/lib/api/Makefile | 7 +- tools/lib/api/fd/array.c | 107 ++++++++++++++++++++ tools/lib/api/fd/array.h | 32 ++++++ tools/perf/Makefile.perf | 4 +- tools/perf/builtin-kvm.c | 4 +- tools/perf/tests/builtin-test.c | 8 +- tools/perf/tests/evlist.c | 214 ---------------------------------------- tools/perf/tests/fdarray.c | 174 ++++++++++++++++++++++++++++++++ tools/perf/tests/tests.h | 4 +- tools/perf/util/evlist.c | 57 ++--------- tools/perf/util/evlist.h | 5 +- tools/perf/util/python.c | 4 +- 12 files changed, 342 insertions(+), 278 deletions(-) create mode 100644 tools/lib/api/fd/array.c create mode 100644 tools/lib/api/fd/array.h delete mode 100644 tools/perf/tests/evlist.c create mode 100644 tools/perf/tests/fdarray.c (limited to 'tools') diff --git a/tools/lib/api/Makefile b/tools/lib/api/Makefile index ce00f7e..36c08b1 100644 --- a/tools/lib/api/Makefile +++ b/tools/lib/api/Makefile @@ -10,9 +10,14 @@ LIB_OBJS= LIB_H += fs/debugfs.h LIB_H += fs/fs.h +# See comment below about piggybacking... +LIB_H += fd/array.h LIB_OBJS += $(OUTPUT)fs/debugfs.o LIB_OBJS += $(OUTPUT)fs/fs.o +# XXX piggybacking here, need to introduce libapikfd, or rename this +# to plain libapik.a and make it have it all api goodies +LIB_OBJS += $(OUTPUT)fd/array.o LIBFILE = libapikfs.a @@ -29,7 +34,7 @@ $(LIBFILE): $(LIB_OBJS) $(LIB_OBJS): $(LIB_H) libapi_dirs: - $(QUIET_MKDIR)mkdir -p $(OUTPUT)fs/ + $(QUIET_MKDIR)mkdir -p $(OUTPUT)fd $(OUTPUT)fs $(OUTPUT)%.o: %.c libapi_dirs $(QUIET_CC)$(CC) -o $@ -c $(ALL_CFLAGS) $< diff --git a/tools/lib/api/fd/array.c b/tools/lib/api/fd/array.c new file mode 100644 index 0000000..4889c7d --- /dev/null +++ b/tools/lib/api/fd/array.c @@ -0,0 +1,107 @@ +/* + * Copyright (C) 2014, Red Hat Inc, Arnaldo Carvalho de Melo + * + * Released under the GPL v2. (and only v2, not any later version) + */ +#include "array.h" +#include +#include +#include +#include +#include + +void fdarray__init(struct fdarray *fda, int nr_autogrow) +{ + fda->entries = NULL; + fda->nr = fda->nr_alloc = 0; + fda->nr_autogrow = nr_autogrow; +} + +int fdarray__grow(struct fdarray *fda, int nr) +{ + int nr_alloc = fda->nr_alloc + nr; + size_t size = sizeof(struct pollfd) * nr_alloc; + struct pollfd *entries = realloc(fda->entries, size); + + if (entries == NULL) + return -ENOMEM; + + fda->nr_alloc = nr_alloc; + fda->entries = entries; + return 0; +} + +struct fdarray *fdarray__new(int nr_alloc, int nr_autogrow) +{ + struct fdarray *fda = calloc(1, sizeof(*fda)); + + if (fda != NULL) { + if (fdarray__grow(fda, nr_alloc)) { + free(fda); + fda = NULL; + } else { + fda->nr_autogrow = nr_autogrow; + } + } + + return fda; +} + +void fdarray__exit(struct fdarray *fda) +{ + free(fda->entries); + fdarray__init(fda, 0); +} + +void fdarray__delete(struct fdarray *fda) +{ + fdarray__exit(fda); + free(fda); +} + +int fdarray__add(struct fdarray *fda, int fd, short revents) +{ + if (fda->nr == fda->nr_alloc && + fdarray__grow(fda, fda->nr_autogrow) < 0) + return -ENOMEM; + + fda->entries[fda->nr].fd = fd; + fda->entries[fda->nr].events = revents; + fda->nr++; + return 0; +} + +int fdarray__filter(struct fdarray *fda, short revents) +{ + int fd, nr = 0; + + if (fda->nr == 0) + return 0; + + for (fd = 0; fd < fda->nr; ++fd) { + if (fda->entries[fd].revents & revents) + continue; + + if (fd != nr) + fda->entries[nr] = fda->entries[fd]; + + ++nr; + } + + return fda->nr = nr; +} + +int fdarray__poll(struct fdarray *fda, int timeout) +{ + return poll(fda->entries, fda->nr, timeout); +} + +int fdarray__fprintf(struct fdarray *fda, FILE *fp) +{ + int fd, printed = fprintf(fp, "%d [ ", fda->nr); + + for (fd = 0; fd < fda->nr; ++fd) + printed += fprintf(fp, "%s%d", fd ? ", " : "", fda->entries[fd].fd); + + return printed + fprintf(fp, " ]"); +} diff --git a/tools/lib/api/fd/array.h b/tools/lib/api/fd/array.h new file mode 100644 index 0000000..de38361 --- /dev/null +++ b/tools/lib/api/fd/array.h @@ -0,0 +1,32 @@ +#ifndef __API_FD_ARRAY__ +#define __API_FD_ARRAY__ + +#include + +struct pollfd; + +struct fdarray { + int nr; + int nr_alloc; + int nr_autogrow; + struct pollfd *entries; +}; + +void fdarray__init(struct fdarray *fda, int nr_autogrow); +void fdarray__exit(struct fdarray *fda); + +struct fdarray *fdarray__new(int nr_alloc, int nr_autogrow); +void fdarray__delete(struct fdarray *fda); + +int fdarray__add(struct fdarray *fda, int fd, short revents); +int fdarray__poll(struct fdarray *fda, int timeout); +int fdarray__filter(struct fdarray *fda, short revents); +int fdarray__grow(struct fdarray *fda, int extra); +int fdarray__fprintf(struct fdarray *fda, FILE *fp); + +static inline int fdarray__available_entries(struct fdarray *fda) +{ + return fda->nr_alloc - fda->nr; +} + +#endif /* __API_FD_ARRAY__ */ diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf index f287c25..262916f 100644 --- a/tools/perf/Makefile.perf +++ b/tools/perf/Makefile.perf @@ -400,9 +400,9 @@ LIB_OBJS += $(OUTPUT)tests/open-syscall-tp-fields.o LIB_OBJS += $(OUTPUT)tests/mmap-basic.o LIB_OBJS += $(OUTPUT)tests/perf-record.o LIB_OBJS += $(OUTPUT)tests/rdpmc.o -LIB_OBJS += $(OUTPUT)tests/evlist.o LIB_OBJS += $(OUTPUT)tests/evsel-roundtrip-name.o LIB_OBJS += $(OUTPUT)tests/evsel-tp-sched.o +LIB_OBJS += $(OUTPUT)tests/fdarray.o LIB_OBJS += $(OUTPUT)tests/pmu.o LIB_OBJS += $(OUTPUT)tests/hists_common.o LIB_OBJS += $(OUTPUT)tests/hists_link.o @@ -770,7 +770,7 @@ $(LIBTRACEEVENT)-clean: install-traceevent-plugins: $(LIBTRACEEVENT) $(QUIET_SUBDIR0)$(TRACE_EVENT_DIR) $(LIBTRACEEVENT_FLAGS) install_plugins -LIBAPIKFS_SOURCES = $(wildcard $(LIB_PATH)fs/*.[ch]) +LIBAPIKFS_SOURCES = $(wildcard $(LIB_PATH)fs/*.[ch] $(LIB_PATH)fd/*.[ch]) # if subdir is set, we've been called from above so target has been built # already diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c index a440219..1e639d6 100644 --- a/tools/perf/builtin-kvm.c +++ b/tools/perf/builtin-kvm.c @@ -920,7 +920,7 @@ static int kvm_events_live_report(struct perf_kvm_stat *kvm) signal(SIGTERM, sig_handler); /* use pollfds -- need to add timerfd and stdin */ - nr_fds = kvm->evlist->nr_fds; + nr_fds = kvm->evlist->pollfd.nr; /* add timer fd */ if (perf_kvm__timerfd_create(kvm) < 0) { @@ -941,7 +941,7 @@ static int kvm_events_live_report(struct perf_kvm_stat *kvm) if (fd_set_nonblock(fileno(stdin)) != 0) goto out; - pollfds = kvm->evlist->pollfd; + pollfds = kvm->evlist->pollfd.entries; /* everything is good - enable the events and process */ perf_evlist__enable(kvm->evlist); diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c index 174c3ff..ac655b0 100644 --- a/tools/perf/tests/builtin-test.c +++ b/tools/perf/tests/builtin-test.c @@ -158,12 +158,12 @@ static struct test { .func = test__switch_tracking, }, { - .desc = "Filter fds with revents mask in a pollfd array", - .func = test__perf_evlist__filter_pollfd, + .desc = "Filter fds with revents mask in a fdarray", + .func = test__fdarray__filter, }, { - .desc = "Add fd to pollfd array, making it autogrow", - .func = test__perf_evlist__add_pollfd, + .desc = "Add fd to a fdarray, making it autogrow", + .func = test__fdarray__add, }, { .func = NULL, diff --git a/tools/perf/tests/evlist.c b/tools/perf/tests/evlist.c deleted file mode 100644 index 99d7dfd..0000000 --- a/tools/perf/tests/evlist.c +++ /dev/null @@ -1,214 +0,0 @@ -#include "util/evlist.h" -#include "util/debug.h" -#include "util/thread_map.h" -#include "util/cpumap.h" -#include "tests/tests.h" - -static void perf_evlist__init_pollfd(struct perf_evlist *evlist, - int nr_fds_alloc, short revents) -{ - int fd; - - evlist->nr_fds = nr_fds_alloc; - - for (fd = 0; fd < nr_fds_alloc; ++fd) { - evlist->pollfd[fd].fd = nr_fds_alloc - fd; - evlist->pollfd[fd].revents = revents; - } -} - -static int perf_evlist__fprintf_pollfd(struct perf_evlist *evlist, - const char *prefix, FILE *fp) -{ - int printed = 0, fd; - - if (!verbose) - return 0; - - printed += fprintf(fp, "\n%s: %3d [ ", prefix, evlist->nr_fds); - for (fd = 0; fd < evlist->nr_fds; ++fd) - printed += fprintf(fp, "%s%d", fd ? ", " : "", evlist->pollfd[fd].fd); - printed += fprintf(fp, " ]"); - return printed; -} - -int test__perf_evlist__filter_pollfd(void) -{ - const int nr_fds_alloc = 5; - int nr_fds, expected_fd[2], fd; - struct pollfd pollfd[nr_fds_alloc]; - struct perf_evlist evlist_alloc = { - .pollfd = pollfd, - }, *evlist = &evlist_alloc; - - perf_evlist__init_pollfd(evlist, nr_fds_alloc, POLLIN); - nr_fds = perf_evlist__filter_pollfd(evlist, POLLHUP); - if (nr_fds != nr_fds_alloc) { - pr_debug("\nperf_evlist__filter_pollfd()=%d != %d shouldn't have filtered anything", - nr_fds, nr_fds_alloc); - return TEST_FAIL; - } - - perf_evlist__init_pollfd(evlist, nr_fds_alloc, POLLHUP); - nr_fds = perf_evlist__filter_pollfd(evlist, POLLHUP); - if (nr_fds != 0) { - pr_debug("\nperf_evlist__filter_pollfd()=%d != %d, should have filtered all fds", - nr_fds, nr_fds_alloc); - return TEST_FAIL; - } - - perf_evlist__init_pollfd(evlist, nr_fds_alloc, POLLHUP); - pollfd[2].revents = POLLIN; - expected_fd[0] = pollfd[2].fd; - - pr_debug("\nfiltering all but pollfd[2]:"); - perf_evlist__fprintf_pollfd(evlist, "before", stderr); - nr_fds = perf_evlist__filter_pollfd(evlist, POLLHUP); - perf_evlist__fprintf_pollfd(evlist, " after", stderr); - if (nr_fds != 1) { - pr_debug("\nperf_evlist__filter_pollfd()=%d != 1, should have left just one event", - nr_fds); - return TEST_FAIL; - } - - if (pollfd[0].fd != expected_fd[0]) { - pr_debug("\npollfd[0].fd=%d != %d\n", pollfd[0].fd, expected_fd[0]); - return TEST_FAIL; - } - - perf_evlist__init_pollfd(evlist, nr_fds_alloc, POLLHUP); - pollfd[0].revents = POLLIN; - expected_fd[0] = pollfd[0].fd; - pollfd[3].revents = POLLIN; - expected_fd[1] = pollfd[3].fd; - - pr_debug("\nfiltering all but (pollfd[0], pollfd[3]):"); - perf_evlist__fprintf_pollfd(evlist, "before", stderr); - nr_fds = perf_evlist__filter_pollfd(evlist, POLLHUP); - perf_evlist__fprintf_pollfd(evlist, " after", stderr); - if (nr_fds != 2) { - pr_debug("\nperf_evlist__filter_pollfd()=%d != 2, should have left just two events", - nr_fds); - return TEST_FAIL; - } - - for (fd = 0; fd < 2; ++fd) { - if (pollfd[fd].fd != expected_fd[fd]) { - pr_debug("\npollfd[%d].fd=%d != %d\n", fd, pollfd[fd].fd, expected_fd[fd]); - return TEST_FAIL; - } - } - - pr_debug("\n"); - - return 0; -} - -int test__perf_evlist__add_pollfd(void) -{ - struct perf_evsel evsel = { - .system_wide = false, - }; - struct thread_map threads = { - .nr = 2, - }; - struct perf_evlist evlist_alloc = { - .pollfd = NULL, - .threads = &threads, - }, *evlist = &evlist_alloc; - - INIT_LIST_HEAD(&evlist->entries); - list_add(&evsel.node, &evlist->entries); - - if (perf_evlist__alloc_pollfd(evlist) < 0) { - pr_debug("\nperf_evlist__alloc_pollfd(evlist) failed!"); - return TEST_FAIL; - } - - if (evlist->nr_fds_alloc != threads.nr) { - pr_debug("\n_evlist__alloc_pollfd: nr_fds_alloc=%d != (threads->nr(%d) * cpu_map->nr(%d))=%d", - evlist->nr_fds_alloc, thread_map__nr(evlist->threads), cpu_map__nr(evlist->cpus), - thread_map__nr(evlist->threads) * cpu_map__nr(evlist->cpus)); - return TEST_FAIL; - } - - if (perf_evlist__add_pollfd(evlist, 1) < 0) { - pr_debug("\nperf_evlist__add_pollfd(evlist, 1) failed!"); - return TEST_FAIL; - } - - if (evlist->nr_fds != 1) { - pr_debug("\nperf_evlist__add_pollfd(evlist, 1)=%d != 1", evlist->nr_fds); - return TEST_FAIL; - } - - if (perf_evlist__add_pollfd(evlist, 2) < 0) { - pr_debug("\nperf_evlist__add_pollfd(evlist, 2) failed!"); - return TEST_FAIL; - } - - if (evlist->nr_fds != 2) { - pr_debug("\nperf_evlist__add_pollfd(evlist, 2)=%d != 2", evlist->nr_fds); - return TEST_FAIL; - } - - perf_evlist__fprintf_pollfd(evlist, "before growing array", stderr); - - if (perf_evlist__add_pollfd(evlist, 35) < 0) { - pr_debug("\nperf_evlist__add_pollfd(evlist, 35) failed!"); - return TEST_FAIL; - } - - if (evlist->nr_fds != 3) { - pr_debug("\nperf_evlist__add_pollfd(evlist, 35)=%d != 3", evlist->nr_fds); - return TEST_FAIL; - } - - if (evlist->pollfd == NULL) { - pr_debug("\nperf_evlist__add_pollfd(evlist, 35) should have allocated evlist->pollfd!"); - return TEST_FAIL; - } - - perf_evlist__fprintf_pollfd(evlist, "after 3rd add_pollfd", stderr); - - if (evlist->pollfd[2].fd != 35) { - pr_debug("\nevlist->pollfd[2](%d) != 35!", evlist->pollfd[2].fd); - return TEST_FAIL; - } - - if (perf_evlist__add_pollfd(evlist, 88) < 0) { - pr_debug("\nperf_evlist__add_pollfd(evlist, 88) failed!"); - return TEST_FAIL; - } - - if (evlist->nr_fds != 4) { - pr_debug("\nperf_evlist__add_pollfd(evlist, 88)=%d != 2", evlist->nr_fds); - return TEST_FAIL; - } - - perf_evlist__fprintf_pollfd(evlist, "after 4th add_pollfd", stderr); - - if (evlist->pollfd[0].fd != 1) { - pr_debug("\nevlist->pollfd[0](%d) != 1!", evlist->pollfd[0].fd); - return TEST_FAIL; - } - - if (evlist->pollfd[1].fd != 2) { - pr_debug("\nevlist->pollfd[1](%d) != 2!", evlist->pollfd[1].fd); - return TEST_FAIL; - } - - if (evlist->pollfd[2].fd != 35) { - pr_debug("\nevlist->pollfd[2](%d) != 35!", evlist->pollfd[2].fd); - return TEST_FAIL; - } - - if (evlist->pollfd[3].fd != 88) { - pr_debug("\nevlist->pollfd[3](%d) != 88!", evlist->pollfd[3].fd); - return TEST_FAIL; - } - - pr_debug("\n"); - - return 0; -} diff --git a/tools/perf/tests/fdarray.c b/tools/perf/tests/fdarray.c new file mode 100644 index 0000000..a0fea62 --- /dev/null +++ b/tools/perf/tests/fdarray.c @@ -0,0 +1,174 @@ +#include +#include "util/debug.h" +#include "tests/tests.h" + +static void fdarray__init_revents(struct fdarray *fda, short revents) +{ + int fd; + + fda->nr = fda->nr_alloc; + + for (fd = 0; fd < fda->nr; ++fd) { + fda->entries[fd].fd = fda->nr - fd; + fda->entries[fd].revents = revents; + } +} + +static int fdarray__fprintf_prefix(struct fdarray *fda, const char *prefix, FILE *fp) +{ + int printed = 0; + + if (!verbose) + return 0; + + printed += fprintf(fp, "\n%s: ", prefix); + return printed + fdarray__fprintf(fda, fp); +} + +int test__fdarray__filter(void) +{ + int nr_fds, expected_fd[2], fd, err = TEST_FAIL; + struct fdarray *fda = fdarray__new(5, 5); + + if (fda == NULL) { + pr_debug("\nfdarray__new() failed!"); + goto out; + } + + fdarray__init_revents(fda, POLLIN); + nr_fds = fdarray__filter(fda, POLLHUP); + if (nr_fds != fda->nr_alloc) { + pr_debug("\nfdarray__filter()=%d != %d shouldn't have filtered anything", + nr_fds, fda->nr_alloc); + goto out_delete; + } + + fdarray__init_revents(fda, POLLHUP); + nr_fds = fdarray__filter(fda, POLLHUP); + if (nr_fds != 0) { + pr_debug("\nfdarray__filter()=%d != %d, should have filtered all fds", + nr_fds, fda->nr_alloc); + goto out_delete; + } + + fdarray__init_revents(fda, POLLHUP); + fda->entries[2].revents = POLLIN; + expected_fd[0] = fda->entries[2].fd; + + pr_debug("\nfiltering all but fda->entries[2]:"); + fdarray__fprintf_prefix(fda, "before", stderr); + nr_fds = fdarray__filter(fda, POLLHUP); + fdarray__fprintf_prefix(fda, " after", stderr); + if (nr_fds != 1) { + pr_debug("\nfdarray__filter()=%d != 1, should have left just one event", nr_fds); + goto out_delete; + } + + if (fda->entries[0].fd != expected_fd[0]) { + pr_debug("\nfda->entries[0].fd=%d != %d\n", + fda->entries[0].fd, expected_fd[0]); + goto out_delete; + } + + fdarray__init_revents(fda, POLLHUP); + fda->entries[0].revents = POLLIN; + expected_fd[0] = fda->entries[0].fd; + fda->entries[3].revents = POLLIN; + expected_fd[1] = fda->entries[3].fd; + + pr_debug("\nfiltering all but (fda->entries[0], fda->entries[3]):"); + fdarray__fprintf_prefix(fda, "before", stderr); + nr_fds = fdarray__filter(fda, POLLHUP); + fdarray__fprintf_prefix(fda, " after", stderr); + if (nr_fds != 2) { + pr_debug("\nfdarray__filter()=%d != 2, should have left just two events", + nr_fds); + goto out_delete; + } + + for (fd = 0; fd < 2; ++fd) { + if (fda->entries[fd].fd != expected_fd[fd]) { + pr_debug("\nfda->entries[%d].fd=%d != %d\n", fd, + fda->entries[fd].fd, expected_fd[fd]); + goto out_delete; + } + } + + pr_debug("\n"); + + err = 0; +out_delete: + fdarray__delete(fda); +out: + return err; +} + +int test__fdarray__add(void) +{ + int err = TEST_FAIL; + struct fdarray *fda = fdarray__new(2, 2); + + if (fda == NULL) { + pr_debug("\nfdarray__new() failed!"); + goto out; + } + +#define FDA_CHECK(_idx, _fd, _revents) \ + if (fda->entries[_idx].fd != _fd) { \ + pr_debug("\n%d: fda->entries[%d](%d) != %d!", \ + __LINE__, _idx, fda->entries[1].fd, _fd); \ + goto out_delete; \ + } \ + if (fda->entries[_idx].events != (_revents)) { \ + pr_debug("\n%d: fda->entries[%d].revents(%d) != %d!", \ + __LINE__, _idx, fda->entries[_idx].fd, _revents); \ + goto out_delete; \ + } + +#define FDA_ADD(_idx, _fd, _revents, _nr) \ + if (fdarray__add(fda, _fd, _revents) < 0) { \ + pr_debug("\n%d: fdarray__add(fda, %d, %d) failed!", \ + __LINE__,_fd, _revents); \ + goto out_delete; \ + } \ + if (fda->nr != _nr) { \ + pr_debug("\n%d: fdarray__add(fda, %d, %d)=%d != %d", \ + __LINE__,_fd, _revents, fda->nr, _nr); \ + goto out_delete; \ + } \ + FDA_CHECK(_idx, _fd, _revents) + + FDA_ADD(0, 1, POLLIN, 1); + FDA_ADD(1, 2, POLLERR, 2); + + fdarray__fprintf_prefix(fda, "before growing array", stderr); + + FDA_ADD(2, 35, POLLHUP, 3); + + if (fda->entries == NULL) { + pr_debug("\nfdarray__add(fda, 35, POLLHUP) should have allocated fda->pollfd!"); + goto out_delete; + } + + fdarray__fprintf_prefix(fda, "after 3rd add", stderr); + + FDA_ADD(3, 88, POLLIN | POLLOUT, 4); + + fdarray__fprintf_prefix(fda, "after 4th add", stderr); + + FDA_CHECK(0, 1, POLLIN); + FDA_CHECK(1, 2, POLLERR); + FDA_CHECK(2, 35, POLLHUP); + FDA_CHECK(3, 88, POLLIN | POLLOUT); + +#undef FDA_ADD +#undef FDA_CHECK + + pr_debug("\n"); + + err = 0; +out_delete: + fdarray__delete(fda); +out: + return err; +} diff --git a/tools/perf/tests/tests.h b/tools/perf/tests/tests.h index 699d4bb..00e776a 100644 --- a/tools/perf/tests/tests.h +++ b/tools/perf/tests/tests.h @@ -49,8 +49,8 @@ int test__thread_mg_share(void); int test__hists_output(void); int test__hists_cumulate(void); int test__switch_tracking(void); -int test__perf_evlist__filter_pollfd(void); -int test__perf_evlist__add_pollfd(void); +int test__fdarray__filter(void); +int test__fdarray__add(void); #if defined(__x86_64__) || defined(__i386__) || defined(__arm__) #ifdef HAVE_DWARF_UNWIND_SUPPORT diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index 5ff3c66..398dab1 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -37,6 +37,7 @@ void perf_evlist__init(struct perf_evlist *evlist, struct cpu_map *cpus, INIT_HLIST_HEAD(&evlist->heads[i]); INIT_LIST_HEAD(&evlist->entries); perf_evlist__set_maps(evlist, cpus, threads); + fdarray__init(&evlist->pollfd, 64); evlist->workload.pid = -1; } @@ -102,7 +103,7 @@ static void perf_evlist__purge(struct perf_evlist *evlist) void perf_evlist__exit(struct perf_evlist *evlist) { zfree(&evlist->mmap); - zfree(&evlist->pollfd); + fdarray__exit(&evlist->pollfd); } void perf_evlist__delete(struct perf_evlist *evlist) @@ -402,20 +403,6 @@ int perf_evlist__enable_event_idx(struct perf_evlist *evlist, return perf_evlist__enable_event_thread(evlist, evsel, idx); } -static int perf_evlist__grow_pollfd(struct perf_evlist *evlist, int hint) -{ - int nr_fds_alloc = evlist->nr_fds_alloc + hint; - size_t size = sizeof(struct pollfd) * nr_fds_alloc; - struct pollfd *pollfd = realloc(evlist->pollfd, size); - - if (pollfd == NULL) - return -ENOMEM; - - evlist->nr_fds_alloc = nr_fds_alloc; - evlist->pollfd = pollfd; - return 0; -} - int perf_evlist__alloc_pollfd(struct perf_evlist *evlist) { int nr_cpus = cpu_map__nr(evlist->cpus); @@ -430,8 +417,8 @@ int perf_evlist__alloc_pollfd(struct perf_evlist *evlist) nfds += nr_cpus * nr_threads; } - if (evlist->nr_fds_alloc - evlist->nr_fds < nfds && - perf_evlist__grow_pollfd(evlist, nfds) < 0) + if (fdarray__available_entries(&evlist->pollfd) < nfds && + fdarray__grow(&evlist->pollfd, nfds) < 0) return -ENOMEM; return 0; @@ -439,45 +426,19 @@ int perf_evlist__alloc_pollfd(struct perf_evlist *evlist) int perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd) { - /* - * XXX: 64 is arbitrary, just not to call realloc at each fd. - * Find a better autogrowing heuristic - */ - if (evlist->nr_fds == evlist->nr_fds_alloc && - perf_evlist__grow_pollfd(evlist, 64) < 0) - return -ENOMEM; - fcntl(fd, F_SETFL, O_NONBLOCK); - evlist->pollfd[evlist->nr_fds].fd = fd; - evlist->pollfd[evlist->nr_fds].events = POLLIN | POLLERR | POLLHUP; - evlist->nr_fds++; - return 0; + + return fdarray__add(&evlist->pollfd, fd, POLLIN | POLLERR | POLLHUP); } int perf_evlist__filter_pollfd(struct perf_evlist *evlist, short revents_and_mask) { - int fd, nr_fds = 0; - - if (evlist->nr_fds == 0) - return 0; - - for (fd = 0; fd < evlist->nr_fds; ++fd) { - if (evlist->pollfd[fd].revents & revents_and_mask) - continue; - - if (fd != nr_fds) - evlist->pollfd[nr_fds] = evlist->pollfd[fd]; - - ++nr_fds; - } - - evlist->nr_fds = nr_fds; - return nr_fds; + return fdarray__filter(&evlist->pollfd, revents_and_mask); } int perf_evlist__poll(struct perf_evlist *evlist, int timeout) { - return poll(evlist->pollfd, evlist->nr_fds, timeout); + return fdarray__poll(&evlist->pollfd, timeout); } static void perf_evlist__id_hash(struct perf_evlist *evlist, @@ -935,7 +896,7 @@ int perf_evlist__mmap(struct perf_evlist *evlist, unsigned int pages, if (evlist->mmap == NULL && perf_evlist__alloc_mmap(evlist) < 0) return -ENOMEM; - if (evlist->pollfd == NULL && perf_evlist__alloc_pollfd(evlist) < 0) + if (evlist->pollfd.entries == NULL && perf_evlist__alloc_pollfd(evlist) < 0) return -ENOMEM; evlist->overwrite = overwrite; diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h index d7e99b6..fc01370 100644 --- a/tools/perf/util/evlist.h +++ b/tools/perf/util/evlist.h @@ -2,6 +2,7 @@ #define __PERF_EVLIST_H 1 #include +#include #include #include "../perf.h" #include "event.h" @@ -29,8 +30,6 @@ struct perf_evlist { struct hlist_head heads[PERF_EVLIST__HLIST_SIZE]; int nr_entries; int nr_groups; - int nr_fds; - int nr_fds_alloc; int nr_mmaps; size_t mmap_len; int id_pos; @@ -41,8 +40,8 @@ struct perf_evlist { pid_t pid; } workload; bool overwrite; + struct fdarray pollfd; struct perf_mmap *mmap; - struct pollfd *pollfd; struct thread_map *threads; struct cpu_map *cpus; struct perf_evsel *selected; diff --git a/tools/perf/util/python.c b/tools/perf/util/python.c index 4472f8b..3dda85c 100644 --- a/tools/perf/util/python.c +++ b/tools/perf/util/python.c @@ -753,9 +753,9 @@ static PyObject *pyrf_evlist__get_pollfd(struct pyrf_evlist *pevlist, PyObject *list = PyList_New(0); int i; - for (i = 0; i < evlist->nr_fds; ++i) { + for (i = 0; i < evlist->pollfd.nr; ++i) { PyObject *file; - FILE *fp = fdopen(evlist->pollfd[i].fd, "r"); + FILE *fp = fdopen(evlist->pollfd.entries[i].fd, "r"); if (fp == NULL) goto free_list; -- cgit v1.1 From 82396986032915c1572bfb74b224fcc2e4e8ba7c Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Mon, 8 Sep 2014 13:26:35 -0300 Subject: perf evlist: Refcount mmaps We need to know how many fds are using a perf mmap via PERF_EVENT_IOC_SET_OUTPUT, so that we can know when to ditch an mmap, refcount it. v2: Automatically unmap it when the refcount hits one, which will happen when all fds are filtered by perf_evlist__filter_pollfd(), in later patches. Cc: Adrian Hunter Cc: Borislav Petkov Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jean Pihet Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20140908153824.GG2773@kernel.org Link: http://lkml.kernel.org/n/tip-cpv7v2lw0g74ucmxa39xdpms@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/evlist.c | 47 +++++++++++++++++++++++++++++++++++++++++++++-- tools/perf/util/evlist.h | 6 ++++++ 2 files changed, 51 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index 398dab1..efddee5 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -28,6 +28,8 @@ #define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y)) #define SID(e, x, y) xyarray__entry(e->sample_id, x, y) +static void __perf_evlist__munmap(struct perf_evlist *evlist, int idx); + void perf_evlist__init(struct perf_evlist *evlist, struct cpu_map *cpus, struct thread_map *threads) { @@ -651,14 +653,36 @@ union perf_event *perf_evlist__mmap_read(struct perf_evlist *evlist, int idx) return event; } +static bool perf_mmap__empty(struct perf_mmap *md) +{ + return perf_mmap__read_head(md) != md->prev; +} + +static void perf_evlist__mmap_get(struct perf_evlist *evlist, int idx) +{ + ++evlist->mmap[idx].refcnt; +} + +static void perf_evlist__mmap_put(struct perf_evlist *evlist, int idx) +{ + BUG_ON(evlist->mmap[idx].refcnt == 0); + + if (--evlist->mmap[idx].refcnt == 0) + __perf_evlist__munmap(evlist, idx); +} + void perf_evlist__mmap_consume(struct perf_evlist *evlist, int idx) { + struct perf_mmap *md = &evlist->mmap[idx]; + if (!evlist->overwrite) { - struct perf_mmap *md = &evlist->mmap[idx]; unsigned int old = md->prev; perf_mmap__write_tail(md, old); } + + if (md->refcnt == 1 && perf_mmap__empty(md)) + perf_evlist__mmap_put(evlist, idx); } static void __perf_evlist__munmap(struct perf_evlist *evlist, int idx) @@ -666,6 +690,7 @@ static void __perf_evlist__munmap(struct perf_evlist *evlist, int idx) if (evlist->mmap[idx].base != NULL) { munmap(evlist->mmap[idx].base, evlist->mmap_len); evlist->mmap[idx].base = NULL; + evlist->mmap[idx].refcnt = 0; } } @@ -699,6 +724,20 @@ struct mmap_params { static int __perf_evlist__mmap(struct perf_evlist *evlist, int idx, struct mmap_params *mp, int fd) { + /* + * The last one will be done at perf_evlist__mmap_consume(), so that we + * make sure we don't prevent tools from consuming every last event in + * the ring buffer. + * + * I.e. we can get the POLLHUP meaning that the fd doesn't exist + * anymore, but the last events for it are still in the ring buffer, + * waiting to be consumed. + * + * Tools can chose to ignore this at their own discretion, but the + * evlist layer can't just drop it when filtering events in + * perf_evlist__filter_pollfd(). + */ + evlist->mmap[idx].refcnt = 2; evlist->mmap[idx].prev = 0; evlist->mmap[idx].mask = mp->mask; evlist->mmap[idx].base = mmap(NULL, evlist->mmap_len, mp->prot, @@ -734,10 +773,14 @@ static int perf_evlist__mmap_per_evsel(struct perf_evlist *evlist, int idx, } else { if (ioctl(fd, PERF_EVENT_IOC_SET_OUTPUT, *output) != 0) return -1; + + perf_evlist__mmap_get(evlist, idx); } - if (perf_evlist__add_pollfd(evlist, fd) < 0) + if (perf_evlist__add_pollfd(evlist, fd) < 0) { + perf_evlist__mmap_put(evlist, idx); return -1; + } if ((evsel->attr.read_format & PERF_FORMAT_ID) && perf_evlist__id_add_fd(evlist, evsel, cpu, thread, fd) < 0) diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h index fc01370..bd312b0 100644 --- a/tools/perf/util/evlist.h +++ b/tools/perf/util/evlist.h @@ -18,9 +18,15 @@ struct record_opts; #define PERF_EVLIST__HLIST_BITS 8 #define PERF_EVLIST__HLIST_SIZE (1 << PERF_EVLIST__HLIST_BITS) +/** + * struct perf_mmap - perf's ring buffer mmap details + * + * @refcnt - e.g. code using PERF_EVENT_IOC_SET_OUTPUT to share this + */ struct perf_mmap { void *base; int mask; + int refcnt; unsigned int prev; char event_copy[PERF_SAMPLE_MAX_SIZE]; }; -- cgit v1.1 From 2171a9256862ec139a042832a9ae737b942ca882 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Mon, 8 Sep 2014 11:24:01 -0300 Subject: tools lib fd array: Allow associating an integer cookie with each entry We will use this in perf's evlist class so that it can, at fdarray__filter() time, to unmap the associated ring buffer. We may need to have further info associated with each fdarray entry, in that case we'll make that int array a 'union fdarray_priv' one and put a pointer there so that users can stash whatever they want there. For now, an int is enough tho. v2: Add clarification to the per array entry priv area, as well as make it a union, which makes usage a bit longer, but if/when we make it use more space by allowing per entry pointers existing users source code will not have to be changed, just rebuilt. Cc: Adrian Hunter Cc: Borislav Petkov Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jean Pihet Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Signed-off-by: Arnaldo Carvalho de Melo Link: http://lkml.kernel.org/n/tip-0p00bn83quck3fio3kcs9vca@git.kernel.org --- tools/lib/api/fd/array.c | 28 ++++++++++++++++++++++++---- tools/lib/api/fd/array.h | 16 +++++++++++++++- tools/perf/tests/fdarray.c | 8 ++++---- tools/perf/util/evlist.c | 2 +- 4 files changed, 44 insertions(+), 10 deletions(-) (limited to 'tools') diff --git a/tools/lib/api/fd/array.c b/tools/lib/api/fd/array.c index 4889c7d..0e636c4 100644 --- a/tools/lib/api/fd/array.c +++ b/tools/lib/api/fd/array.c @@ -13,21 +13,31 @@ void fdarray__init(struct fdarray *fda, int nr_autogrow) { fda->entries = NULL; + fda->priv = NULL; fda->nr = fda->nr_alloc = 0; fda->nr_autogrow = nr_autogrow; } int fdarray__grow(struct fdarray *fda, int nr) { + void *priv; int nr_alloc = fda->nr_alloc + nr; + size_t psize = sizeof(fda->priv[0]) * nr_alloc; size_t size = sizeof(struct pollfd) * nr_alloc; struct pollfd *entries = realloc(fda->entries, size); if (entries == NULL) return -ENOMEM; + priv = realloc(fda->priv, psize); + if (priv == NULL) { + free(entries); + return -ENOMEM; + } + fda->nr_alloc = nr_alloc; fda->entries = entries; + fda->priv = priv; return 0; } @@ -50,6 +60,7 @@ struct fdarray *fdarray__new(int nr_alloc, int nr_autogrow) void fdarray__exit(struct fdarray *fda) { free(fda->entries); + free(fda->priv); fdarray__init(fda, 0); } @@ -61,6 +72,8 @@ void fdarray__delete(struct fdarray *fda) int fdarray__add(struct fdarray *fda, int fd, short revents) { + int pos = fda->nr; + if (fda->nr == fda->nr_alloc && fdarray__grow(fda, fda->nr_autogrow) < 0) return -ENOMEM; @@ -68,10 +81,11 @@ int fdarray__add(struct fdarray *fda, int fd, short revents) fda->entries[fda->nr].fd = fd; fda->entries[fda->nr].events = revents; fda->nr++; - return 0; + return pos; } -int fdarray__filter(struct fdarray *fda, short revents) +int fdarray__filter(struct fdarray *fda, short revents, + void (*entry_destructor)(struct fdarray *fda, int fd)) { int fd, nr = 0; @@ -79,11 +93,17 @@ int fdarray__filter(struct fdarray *fda, short revents) return 0; for (fd = 0; fd < fda->nr; ++fd) { - if (fda->entries[fd].revents & revents) + if (fda->entries[fd].revents & revents) { + if (entry_destructor) + entry_destructor(fda, fd); + continue; + } - if (fd != nr) + if (fd != nr) { fda->entries[nr] = fda->entries[fd]; + fda->priv[nr] = fda->priv[fd]; + } ++nr; } diff --git a/tools/lib/api/fd/array.h b/tools/lib/api/fd/array.h index de38361..45db018 100644 --- a/tools/lib/api/fd/array.h +++ b/tools/lib/api/fd/array.h @@ -5,11 +5,24 @@ struct pollfd; +/** + * struct fdarray: Array of file descriptors + * + * @priv: Per array entry priv area, users should access just its contents, + * not set it to anything, as it is kept in synch with @entries, being + * realloc'ed, * for instance, in fdarray__{grow,filter}. + * + * I.e. using 'fda->priv[N].idx = * value' where N < fda->nr is ok, + * but doing 'fda->priv = malloc(M)' is not allowed. + */ struct fdarray { int nr; int nr_alloc; int nr_autogrow; struct pollfd *entries; + union { + int idx; + } *priv; }; void fdarray__init(struct fdarray *fda, int nr_autogrow); @@ -20,7 +33,8 @@ void fdarray__delete(struct fdarray *fda); int fdarray__add(struct fdarray *fda, int fd, short revents); int fdarray__poll(struct fdarray *fda, int timeout); -int fdarray__filter(struct fdarray *fda, short revents); +int fdarray__filter(struct fdarray *fda, short revents, + void (*entry_destructor)(struct fdarray *fda, int fd)); int fdarray__grow(struct fdarray *fda, int extra); int fdarray__fprintf(struct fdarray *fda, FILE *fp); diff --git a/tools/perf/tests/fdarray.c b/tools/perf/tests/fdarray.c index a0fea62..d24b837 100644 --- a/tools/perf/tests/fdarray.c +++ b/tools/perf/tests/fdarray.c @@ -36,7 +36,7 @@ int test__fdarray__filter(void) } fdarray__init_revents(fda, POLLIN); - nr_fds = fdarray__filter(fda, POLLHUP); + nr_fds = fdarray__filter(fda, POLLHUP, NULL); if (nr_fds != fda->nr_alloc) { pr_debug("\nfdarray__filter()=%d != %d shouldn't have filtered anything", nr_fds, fda->nr_alloc); @@ -44,7 +44,7 @@ int test__fdarray__filter(void) } fdarray__init_revents(fda, POLLHUP); - nr_fds = fdarray__filter(fda, POLLHUP); + nr_fds = fdarray__filter(fda, POLLHUP, NULL); if (nr_fds != 0) { pr_debug("\nfdarray__filter()=%d != %d, should have filtered all fds", nr_fds, fda->nr_alloc); @@ -57,7 +57,7 @@ int test__fdarray__filter(void) pr_debug("\nfiltering all but fda->entries[2]:"); fdarray__fprintf_prefix(fda, "before", stderr); - nr_fds = fdarray__filter(fda, POLLHUP); + nr_fds = fdarray__filter(fda, POLLHUP, NULL); fdarray__fprintf_prefix(fda, " after", stderr); if (nr_fds != 1) { pr_debug("\nfdarray__filter()=%d != 1, should have left just one event", nr_fds); @@ -78,7 +78,7 @@ int test__fdarray__filter(void) pr_debug("\nfiltering all but (fda->entries[0], fda->entries[3]):"); fdarray__fprintf_prefix(fda, "before", stderr); - nr_fds = fdarray__filter(fda, POLLHUP); + nr_fds = fdarray__filter(fda, POLLHUP, NULL); fdarray__fprintf_prefix(fda, " after", stderr); if (nr_fds != 2) { pr_debug("\nfdarray__filter()=%d != 2, should have left just two events", diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index efddee5..61d18dc 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -435,7 +435,7 @@ int perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd) int perf_evlist__filter_pollfd(struct perf_evlist *evlist, short revents_and_mask) { - return fdarray__filter(&evlist->pollfd, revents_and_mask); + return fdarray__filter(&evlist->pollfd, revents_and_mask, NULL); } int perf_evlist__poll(struct perf_evlist *evlist, int timeout) -- cgit v1.1 From e4b356b56cfe77b800a9bc2e6efefa6a069b8a78 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Mon, 8 Sep 2014 11:27:49 -0300 Subject: perf evlist: Unmap when all refcounts to fd are gone and events drained As noticed by receiving a POLLHUP for all its pollfd entries. That will remove the refcount taken in perf_evlist__mmap_per_evsel(), and when all events are consumed via perf_evlist__mmap_read() + perf_evlist__mmap_consume(), the ring buffer will be unmap'ed. Thanks to Jiri Olsa for pointing out that we must wait till all events are consumed, not being ok to unmmap just when receiving all the POLLHUPs. Cc: Adrian Hunter Cc: Borislav Petkov Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jean Pihet Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/n/tip-t10w1xk4myp7ca7m9fvip6a0@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/evlist.c | 35 +++++++++++++++++++++++++++++------ 1 file changed, 29 insertions(+), 6 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index 61d18dc..3cebc9a 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -25,11 +25,12 @@ #include #include +static void perf_evlist__mmap_put(struct perf_evlist *evlist, int idx); +static void __perf_evlist__munmap(struct perf_evlist *evlist, int idx); + #define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y)) #define SID(e, x, y) xyarray__entry(e->sample_id, x, y) -static void __perf_evlist__munmap(struct perf_evlist *evlist, int idx); - void perf_evlist__init(struct perf_evlist *evlist, struct cpu_map *cpus, struct thread_map *threads) { @@ -426,16 +427,38 @@ int perf_evlist__alloc_pollfd(struct perf_evlist *evlist) return 0; } +static int __perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd, int idx) +{ + int pos = fdarray__add(&evlist->pollfd, fd, POLLIN | POLLERR | POLLHUP); + /* + * Save the idx so that when we filter out fds POLLHUP'ed we can + * close the associated evlist->mmap[] entry. + */ + if (pos >= 0) { + evlist->pollfd.priv[pos].idx = idx; + + fcntl(fd, F_SETFL, O_NONBLOCK); + } + + return pos; +} + int perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd) { - fcntl(fd, F_SETFL, O_NONBLOCK); + return __perf_evlist__add_pollfd(evlist, fd, -1); +} + +static void perf_evlist__munmap_filtered(struct fdarray *fda, int fd) +{ + struct perf_evlist *evlist = container_of(fda, struct perf_evlist, pollfd); - return fdarray__add(&evlist->pollfd, fd, POLLIN | POLLERR | POLLHUP); + perf_evlist__mmap_put(evlist, fda->priv[fd].idx); } int perf_evlist__filter_pollfd(struct perf_evlist *evlist, short revents_and_mask) { - return fdarray__filter(&evlist->pollfd, revents_and_mask, NULL); + return fdarray__filter(&evlist->pollfd, revents_and_mask, + perf_evlist__munmap_filtered); } int perf_evlist__poll(struct perf_evlist *evlist, int timeout) @@ -777,7 +800,7 @@ static int perf_evlist__mmap_per_evsel(struct perf_evlist *evlist, int idx, perf_evlist__mmap_get(evlist, idx); } - if (perf_evlist__add_pollfd(evlist, fd) < 0) { + if (__perf_evlist__add_pollfd(evlist, fd, idx) < 0) { perf_evlist__mmap_put(evlist, idx); return -1; } -- cgit v1.1 From 6dcf45ef9877863fb68c065e5ade3cdb6217c504 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Wed, 13 Aug 2014 11:33:59 -0300 Subject: perf record: Filter out POLLHUP'ed file descriptors So that we don't continue polling on vanished file descriptors, i.e. file descriptors for events monitoring threads that exited. I.e. the following 'perf record' command now exits as expected, instead of staying in an eternal loop: $ sleep 5s & $ perf record -p `pidof sleep` Reported-by: Jiri Olsa Cc: Adrian Hunter Cc: David Ahern Cc: Don Zickus Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Mike Galbraith Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-8dg8o21t2ntzly2bfh53p3sg@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-record.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index a8c2e9d..320b198 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -308,7 +308,7 @@ static int __cmd_record(struct record *rec, int argc, const char **argv) struct record_opts *opts = &rec->opts; struct perf_data_file *file = &rec->file; struct perf_session *session; - bool disabled = false; + bool disabled = false, draining = false; rec->progname = argv[0]; @@ -457,7 +457,7 @@ static int __cmd_record(struct record *rec, int argc, const char **argv) } if (hits == rec->samples) { - if (done) + if (done || draining) break; err = perf_evlist__poll(rec->evlist, -1); /* @@ -467,6 +467,9 @@ static int __cmd_record(struct record *rec, int argc, const char **argv) if (err > 0 || (err < 0 && errno == EINTR)) err = 0; waking++; + + if (perf_evlist__filter_pollfd(rec->evlist, POLLERR | POLLHUP) == 0) + draining = true; } /* -- cgit v1.1 From 46fb3c21d20415dd2693570c33d0ea6eb8745e04 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Mon, 22 Sep 2014 14:39:48 -0300 Subject: perf trace: Filter out POLLHUP'ed file descriptors So that we don't continue polling on vanished file descriptors, i.e. file descriptors for events monitoring threads that exited. I.e. the following 'trace' command now exits as expected, instead of staying in an eternal loop: $ sleep 5s & $ trace -p `pidof sleep` Reported-by: Jiri Olsa Cc: Adrian Hunter Cc: David Ahern Cc: Don Zickus Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Mike Galbraith Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-6qegv786zbf6i8us6t4rxug9@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-trace.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index b8fedf3..fe39dc6 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -2044,6 +2044,7 @@ static int trace__run(struct trace *trace, int argc, const char **argv) int err = -1, i; unsigned long before; const bool forks = argc > 0; + bool draining = false; char sbuf[STRERR_BUFSIZE]; trace->live = true; @@ -2171,8 +2172,12 @@ next_event: if (trace->nr_events == before) { int timeout = done ? 100 : -1; - if (perf_evlist__poll(evlist, timeout) > 0) + if (!draining && perf_evlist__poll(evlist, timeout) > 0) { + if (perf_evlist__filter_pollfd(evlist, POLLERR | POLLHUP) == 0) + draining = true; + goto again; + } } else { goto again; } -- cgit v1.1 From da88c7f78d842a6938d9adde6af87a2ce262051d Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Wed, 24 Sep 2014 13:50:46 -0700 Subject: perf stat: Fix --per-core on multi socket systems On systems with more than one socket perf stat --per-core would either segfault or stop before outputting all cores. The problem was that the output code referenced the id including the socket number in the higher bits, which is far beyond any per cpu array. Mask out the socket number before referencing cpus in abs_printout. I also renamed the variable in nsec_printout to be clear what it is, even though it doesn't reference cpus. Signed-off-by: Andi Kleen Acked-by: Stephane Eranian Cc: Jiri Olsa Cc: Namhyung Kim Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1411591846-32736-1-git-send-email-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-stat.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c index 5fe0edb..b22c62f 100644 --- a/tools/perf/builtin-stat.c +++ b/tools/perf/builtin-stat.c @@ -732,7 +732,7 @@ static void aggr_printout(struct perf_evsel *evsel, int id, int nr) } } -static void nsec_printout(int cpu, int nr, struct perf_evsel *evsel, double avg) +static void nsec_printout(int id, int nr, struct perf_evsel *evsel, double avg) { double msecs = avg / 1e6; const char *fmt_v, *fmt_n; @@ -741,7 +741,7 @@ static void nsec_printout(int cpu, int nr, struct perf_evsel *evsel, double avg) fmt_v = csv_output ? "%.6f%s" : "%18.6f%s"; fmt_n = csv_output ? "%s" : "%-25s"; - aggr_printout(evsel, cpu, nr); + aggr_printout(evsel, id, nr); scnprintf(name, sizeof(name), "%s%s", perf_evsel__name(evsel), csv_output ? "" : " (msec)"); @@ -947,11 +947,12 @@ static void print_ll_cache_misses(int cpu, fprintf(output, " of all LL-cache hits "); } -static void abs_printout(int cpu, int nr, struct perf_evsel *evsel, double avg) +static void abs_printout(int id, int nr, struct perf_evsel *evsel, double avg) { double total, ratio = 0.0, total2; double sc = evsel->scale; const char *fmt; + int cpu = cpu_map__id_to_cpu(id); if (csv_output) { fmt = sc != 1.0 ? "%.2f%s" : "%.0f%s"; @@ -962,7 +963,7 @@ static void abs_printout(int cpu, int nr, struct perf_evsel *evsel, double avg) fmt = sc != 1.0 ? "%18.2f%s" : "%18.0f%s"; } - aggr_printout(evsel, cpu, nr); + aggr_printout(evsel, id, nr); if (aggr_mode == AGGR_GLOBAL) cpu = 0; -- cgit v1.1 From a5c2a4c9561cbbd374231bd341936dae716df9dd Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Wed, 24 Sep 2014 14:39:54 -0700 Subject: perf tools: Fix perf record as non root with kptr_restrict == 1 Currently perf record always errors out when you run it as non-root with kptr_restrict == 1, which is often the default. Make it only warn instead and fix the kernel resolve code to not segfault later. Profiling works still fine, except kernel symbols are not resolved. Signed-off-by: Andi Kleen Cc: Ingo Molnar Cc: Jiri Olsa Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1411594794-7229-1-git-send-email-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/event.c | 8 ++++++-- tools/perf/util/session.c | 2 +- 2 files changed, 7 insertions(+), 3 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c index ed55819..4af6b27 100644 --- a/tools/perf/util/event.c +++ b/tools/perf/util/event.c @@ -558,13 +558,17 @@ int perf_event__synthesize_kernel_mmap(struct perf_tool *tool, struct map *map; struct kmap *kmap; int err; + union perf_event *event; + + if (machine->vmlinux_maps[0] == NULL) + return -1; + /* * We should get this from /sys/kernel/sections/.text, but till that is * available use this, and after it is use this as a fallback for older * kernels. */ - union perf_event *event = zalloc((sizeof(event->mmap) + - machine->id_hdr_size)); + event = zalloc((sizeof(event->mmap) + machine->id_hdr_size)); if (event == NULL) { pr_debug("Not enough memory synthesizing mmap event " "for kernel modules\n"); diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index 6d2d50d..883406f 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -119,7 +119,7 @@ struct perf_session *perf_session__new(struct perf_data_file *file, * kernel MMAP event, in perf_event__process_mmap(). */ if (perf_session__create_kernel_maps(session) < 0) - goto out_delete; + pr_warning("Cannot read kernel map\n"); } if (tool && tool->ordering_requires_timestamps && -- cgit v1.1 From 52e0283497ccb1e675d56c9499cc2cc5ec271094 Mon Sep 17 00:00:00 2001 From: Taeung Song Date: Wed, 24 Sep 2014 10:33:37 +0900 Subject: perf tools: Modify error code for when perf_session__new() fails Because perf_session__new() can fail for more reasons than just ENOMEM, modify error code(ENOMEM or EINVAL) to -1. Signed-off-by: Taeung Song Acked-by: Jiri Olsa Acked-by: Namhyung Kim Cc: Jiri Olsa Cc: Namhyung Kim Link: http://lkml.kernel.org/r/1411522417-9917-1-git-send-email-treeze.taeung@gmail.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-annotate.c | 2 +- tools/perf/builtin-diff.c | 2 +- tools/perf/builtin-evlist.c | 2 +- tools/perf/builtin-inject.c | 2 +- tools/perf/builtin-kmem.c | 2 +- tools/perf/builtin-kvm.c | 4 ++-- tools/perf/builtin-lock.c | 2 +- tools/perf/builtin-mem.c | 2 +- tools/perf/builtin-report.c | 2 +- tools/perf/builtin-script.c | 2 +- tools/perf/builtin-timechart.c | 2 +- tools/perf/builtin-top.c | 2 +- tools/perf/builtin-trace.c | 2 +- 13 files changed, 14 insertions(+), 14 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c index d4da692..be59394 100644 --- a/tools/perf/builtin-annotate.c +++ b/tools/perf/builtin-annotate.c @@ -340,7 +340,7 @@ int cmd_annotate(int argc, const char **argv, const char *prefix __maybe_unused) annotate.session = perf_session__new(&file, false, &annotate.tool); if (annotate.session == NULL) - return -ENOMEM; + return -1; symbol_conf.priv_size = sizeof(struct annotation); symbol_conf.try_vmlinux_path = true; diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c index 190d0b6..a3ce19f 100644 --- a/tools/perf/builtin-diff.c +++ b/tools/perf/builtin-diff.c @@ -683,7 +683,7 @@ static int __cmd_diff(void) d->session = perf_session__new(&d->file, false, &tool); if (!d->session) { pr_err("Failed to open %s\n", d->file.path); - ret = -ENOMEM; + ret = -1; goto out_delete; } diff --git a/tools/perf/builtin-evlist.c b/tools/perf/builtin-evlist.c index 66e12f5..0f93f85 100644 --- a/tools/perf/builtin-evlist.c +++ b/tools/perf/builtin-evlist.c @@ -28,7 +28,7 @@ static int __cmd_evlist(const char *file_name, struct perf_attr_details *details session = perf_session__new(&file, 0, NULL); if (session == NULL) - return -ENOMEM; + return -1; evlist__for_each(session->evlist, pos) perf_evsel__fprintf(pos, details, stdout); diff --git a/tools/perf/builtin-inject.c b/tools/perf/builtin-inject.c index 3a62b6b..de99ca1 100644 --- a/tools/perf/builtin-inject.c +++ b/tools/perf/builtin-inject.c @@ -460,7 +460,7 @@ int cmd_inject(int argc, const char **argv, const char *prefix __maybe_unused) file.path = inject.input_name; inject.session = perf_session__new(&file, true, &inject.tool); if (inject.session == NULL) - return -ENOMEM; + return -1; if (symbol__init(&inject.session->header.env) < 0) return -1; diff --git a/tools/perf/builtin-kmem.c b/tools/perf/builtin-kmem.c index 2376218..f295141 100644 --- a/tools/perf/builtin-kmem.c +++ b/tools/perf/builtin-kmem.c @@ -698,7 +698,7 @@ int cmd_kmem(int argc, const char **argv, const char *prefix __maybe_unused) session = perf_session__new(&file, false, &perf_kmem); if (session == NULL) - return -ENOMEM; + return -1; symbol__init(&session->header.env); diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c index 1e639d6..d8bf227 100644 --- a/tools/perf/builtin-kvm.c +++ b/tools/perf/builtin-kvm.c @@ -1058,7 +1058,7 @@ static int read_events(struct perf_kvm_stat *kvm) kvm->session = perf_session__new(&file, false, &kvm->tool); if (!kvm->session) { pr_err("Initializing perf session failed\n"); - return -EINVAL; + return -1; } symbol__init(&kvm->session->header.env); @@ -1361,7 +1361,7 @@ static int kvm_events_live(struct perf_kvm_stat *kvm, */ kvm->session = perf_session__new(&file, false, &kvm->tool); if (kvm->session == NULL) { - err = -ENOMEM; + err = -1; goto out; } kvm->session->evlist = kvm->evlist; diff --git a/tools/perf/builtin-lock.c b/tools/perf/builtin-lock.c index 92790ed..e7ec715 100644 --- a/tools/perf/builtin-lock.c +++ b/tools/perf/builtin-lock.c @@ -862,7 +862,7 @@ static int __cmd_report(bool display_info) session = perf_session__new(&file, false, &eops); if (!session) { pr_err("Initializing perf session failed\n"); - return -ENOMEM; + return -1; } symbol__init(&session->header.env); diff --git a/tools/perf/builtin-mem.c b/tools/perf/builtin-mem.c index 8b4a87f..24db6ff 100644 --- a/tools/perf/builtin-mem.c +++ b/tools/perf/builtin-mem.c @@ -124,7 +124,7 @@ static int report_raw_events(struct perf_mem *mem) &mem->tool); if (session == NULL) - return -ENOMEM; + return -1; if (mem->cpu_list) { ret = perf_session__cpu_bitmap(session, mem->cpu_list, diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index 8c0b3f2..ac145fa 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -720,7 +720,7 @@ int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused) repeat: session = perf_session__new(&file, false, &report.tool); if (session == NULL) - return -ENOMEM; + return -1; if (report.queue_size) { ordered_events__set_alloc_size(&session->ordered_events, diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c index 02dce92..b9b9e58 100644 --- a/tools/perf/builtin-script.c +++ b/tools/perf/builtin-script.c @@ -1744,7 +1744,7 @@ int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused) session = perf_session__new(&file, false, &script.tool); if (session == NULL) - return -ENOMEM; + return -1; if (header || header_only) { perf_session__fprintf_info(session, stdout, show_full_info); diff --git a/tools/perf/builtin-timechart.c b/tools/perf/builtin-timechart.c index 48eea6c..35b425b 100644 --- a/tools/perf/builtin-timechart.c +++ b/tools/perf/builtin-timechart.c @@ -1605,7 +1605,7 @@ static int __cmd_timechart(struct timechart *tchart, const char *output_name) int ret = -EINVAL; if (session == NULL) - return -ENOMEM; + return -1; symbol__init(&session->header.env); diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index 832fb52..5c16ba2 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -929,7 +929,7 @@ static int __cmd_top(struct perf_top *top) top->session = perf_session__new(NULL, false, NULL); if (top->session == NULL) - return -ENOMEM; + return -1; machines__set_symbol_filter(&top->session->machines, symbol_filter); diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index fe39dc6..c70e69e 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -2250,7 +2250,7 @@ static int trace__replay(struct trace *trace) session = perf_session__new(&file, false, &trace->tool); if (session == NULL) - return -ENOMEM; + return -1; if (symbol__init(&session->header.env) < 0) goto out; -- cgit v1.1 From 1da34daf24823f19cfd56c97973334cd95635926 Mon Sep 17 00:00:00 2001 From: Pranith Kumar Date: Tue, 23 Sep 2014 10:55:08 -0400 Subject: perf tools: Use ACCESS_ONCE() instead of volatile cast Use ACCESS_ONCE() instead of the cast to volatile and read. This is just a style change which is reader friendly. Signed-off-by: Pranith Kumar Acked-by: Namhyung Kim Cc: Adrian Hunter Cc: David Ahern Cc: Ingo Molnar Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1411484109-10442-1-git-send-email-bobby.prani@gmail.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/session.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h index 8dd41ca..ffb4404 100644 --- a/tools/perf/util/session.h +++ b/tools/perf/util/session.h @@ -126,5 +126,5 @@ int __perf_session__set_tracepoints_handlers(struct perf_session *session, extern volatile int session_done; -#define session_done() (*(volatile int *)(&session_done)) +#define session_done() ACCESS_ONCE(session_done) #endif /* __PERF_SESSION_H */ -- cgit v1.1 From 72f72ed21e56c386dd92118e5da3ce06752b1614 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Tue, 23 Sep 2014 10:01:40 +0900 Subject: perf hists browser: Fix callchain print bug on TUI Currently perf report -g graph option doesn't work as expected and always work as same as -g fractal. This was a bug during recent callchain print code cleanup. Before: $ perf report -g graph Children Self Command Shared Object Symbol ================================================================ - 56.19% 35.41% sleep [kernel.kallsyms] [k] page_fault - page_fault + 63.02% _dl_relocate_object + 36.98% clear_user After: Children Self Command Shared Object Symbol ================================================================ - 56.19% 35.41% sleep [kernel.kallsyms] [k] page_fault - page_fault + 35.41% _dl_relocate_object + 20.78% clear_user Reviewed-by: David Ahern Signed-off-by: Namhyung Kim Acked-by: Jiri Olsa Cc: David Ahern Cc: Ingo Molnar Cc: Jiri Olsa Cc: Milian Wolff Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1411434104-5307-2-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/ui/browsers/hists.c | 3 --- 1 file changed, 3 deletions(-) (limited to 'tools') diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c index d4cef68..8f60a97 100644 --- a/tools/perf/ui/browsers/hists.c +++ b/tools/perf/ui/browsers/hists.c @@ -804,9 +804,6 @@ static int hist_browser__show_entry(struct hist_browser *browser, .is_current_entry = current_entry, }; - if (symbol_conf.cumulate_callchain) - total = entry->stat_acc->period; - printed += hist_browser__show_callchain(browser, &entry->sorted_chain, 1, row, total, hist_browser__show_callchain_entry, &arg, -- cgit v1.1 From 72a128aa083a7f4cc4f800718aaae05d9c698e26 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Tue, 23 Sep 2014 10:01:41 +0900 Subject: perf tools: Move callchain config from record_opts to callchain_param So that all callchain config parameters can be read/written to a single place. It's a preparation to consolidate handling of all callchain options. Reviewed-by: David Ahern Signed-off-by: Namhyung Kim Acked-by: Jiri Olsa Cc: David Ahern Cc: Ingo Molnar Cc: Jiri Olsa Cc: Milian Wolff Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1411434104-5307-3-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-record.c | 45 ++++++++++++++++++++------------------------- tools/perf/builtin-top.c | 4 +--- tools/perf/perf.h | 3 --- tools/perf/util/callchain.h | 5 ++++- tools/perf/util/evsel.c | 11 +++++------ 5 files changed, 30 insertions(+), 38 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index 320b198..fde0df7 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -652,7 +652,7 @@ static int get_stack_size(char *str, unsigned long *_size) } #endif /* HAVE_DWARF_UNWIND_SUPPORT */ -int record_parse_callchain(const char *arg, struct record_opts *opts) +int record_parse_callchain(const char *arg) { char *tok, *name, *saveptr = NULL; char *buf; @@ -672,7 +672,7 @@ int record_parse_callchain(const char *arg, struct record_opts *opts) /* Framepointer style */ if (!strncmp(name, "fp", sizeof("fp"))) { if (!strtok_r(NULL, ",", &saveptr)) { - opts->call_graph = CALLCHAIN_FP; + callchain_param.record_mode = CALLCHAIN_FP; ret = 0; } else pr_err("callchain: No more arguments " @@ -685,15 +685,15 @@ int record_parse_callchain(const char *arg, struct record_opts *opts) const unsigned long default_stack_dump_size = 8192; ret = 0; - opts->call_graph = CALLCHAIN_DWARF; - opts->stack_dump_size = default_stack_dump_size; + callchain_param.record_mode = CALLCHAIN_DWARF; + callchain_param.dump_size = default_stack_dump_size; tok = strtok_r(NULL, ",", &saveptr); if (tok) { unsigned long size = 0; ret = get_stack_size(tok, &size); - opts->stack_dump_size = size; + callchain_param.dump_size = size; } #endif /* HAVE_DWARF_UNWIND_SUPPORT */ } else { @@ -708,61 +708,56 @@ int record_parse_callchain(const char *arg, struct record_opts *opts) return ret; } -static void callchain_debug(struct record_opts *opts) +static void callchain_debug(void) { static const char *str[CALLCHAIN_MAX] = { "NONE", "FP", "DWARF" }; - pr_debug("callchain: type %s\n", str[opts->call_graph]); + pr_debug("callchain: type %s\n", str[callchain_param.record_mode]); - if (opts->call_graph == CALLCHAIN_DWARF) + if (callchain_param.record_mode == CALLCHAIN_DWARF) pr_debug("callchain: stack dump size %d\n", - opts->stack_dump_size); + callchain_param.dump_size); } -int record_parse_callchain_opt(const struct option *opt, +int record_parse_callchain_opt(const struct option *opt __maybe_unused, const char *arg, int unset) { - struct record_opts *opts = opt->value; int ret; - opts->call_graph_enabled = !unset; + callchain_param.enabled = !unset; /* --no-call-graph */ if (unset) { - opts->call_graph = CALLCHAIN_NONE; + callchain_param.record_mode = CALLCHAIN_NONE; pr_debug("callchain: disabled\n"); return 0; } - ret = record_parse_callchain(arg, opts); + ret = record_parse_callchain(arg); if (!ret) - callchain_debug(opts); + callchain_debug(); return ret; } -int record_callchain_opt(const struct option *opt, +int record_callchain_opt(const struct option *opt __maybe_unused, const char *arg __maybe_unused, int unset __maybe_unused) { - struct record_opts *opts = opt->value; + callchain_param.enabled = true; - opts->call_graph_enabled = !unset; + if (callchain_param.record_mode == CALLCHAIN_NONE) + callchain_param.record_mode = CALLCHAIN_FP; - if (opts->call_graph == CALLCHAIN_NONE) - opts->call_graph = CALLCHAIN_FP; - - callchain_debug(opts); + callchain_debug(); return 0; } static int perf_record_config(const char *var, const char *value, void *cb) { - struct record *rec = cb; - if (!strcmp(var, "record.call-graph")) - return record_parse_callchain(value, &rec->opts); + return record_parse_callchain(value); return perf_default_config(var, value, cb); } diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index 5c16ba2..f7003fc 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -1020,10 +1020,8 @@ parse_callchain_opt(const struct option *opt, const char *arg, int unset) static int perf_top_config(const char *var, const char *value, void *cb) { - struct perf_top *top = cb; - if (!strcmp(var, "top.call-graph")) - return record_parse_callchain(value, &top->record_opts); + return record_parse_callchain(value); if (!strcmp(var, "top.children")) { symbol_conf.cumulate_callchain = perf_config_bool(var, value); return 0; diff --git a/tools/perf/perf.h b/tools/perf/perf.h index 510c65f..220d44e 100644 --- a/tools/perf/perf.h +++ b/tools/perf/perf.h @@ -41,8 +41,6 @@ void pthread__unblock_sigwinch(void); struct record_opts { struct target target; - int call_graph; - bool call_graph_enabled; bool group; bool inherit_stat; bool no_buffering; @@ -60,7 +58,6 @@ struct record_opts { u64 branch_stack; u64 default_interval; u64 user_interval; - u16 stack_dump_size; bool sample_transaction; unsigned initial_delay; }; diff --git a/tools/perf/util/callchain.h b/tools/perf/util/callchain.h index da43619..819ae4f 100644 --- a/tools/perf/util/callchain.h +++ b/tools/perf/util/callchain.h @@ -54,6 +54,9 @@ enum chain_key { }; struct callchain_param { + bool enabled; + enum perf_call_graph_mode record_mode; + u32 dump_size; enum chain_mode mode; u32 print_limit; double min_percent; @@ -154,7 +157,7 @@ static inline void callchain_cursor_advance(struct callchain_cursor *cursor) struct option; struct hist_entry; -int record_parse_callchain(const char *arg, struct record_opts *opts); +int record_parse_callchain(const char *arg); int record_parse_callchain_opt(const struct option *opt, const char *arg, int unset); int record_callchain_opt(const struct option *opt, const char *arg, int unset); diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index b38de58..e0868a9 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -503,20 +503,19 @@ int perf_evsel__group_desc(struct perf_evsel *evsel, char *buf, size_t size) } static void -perf_evsel__config_callgraph(struct perf_evsel *evsel, - struct record_opts *opts) +perf_evsel__config_callgraph(struct perf_evsel *evsel) { bool function = perf_evsel__is_function_event(evsel); struct perf_event_attr *attr = &evsel->attr; perf_evsel__set_sample_bit(evsel, CALLCHAIN); - if (opts->call_graph == CALLCHAIN_DWARF) { + if (callchain_param.record_mode == CALLCHAIN_DWARF) { if (!function) { perf_evsel__set_sample_bit(evsel, REGS_USER); perf_evsel__set_sample_bit(evsel, STACK_USER); attr->sample_regs_user = PERF_REGS_MASK; - attr->sample_stack_user = opts->stack_dump_size; + attr->sample_stack_user = callchain_param.dump_size; attr->exclude_callchain_user = 1; } else { pr_info("Cannot use DWARF unwind for function trace event," @@ -625,8 +624,8 @@ void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts) attr->mmap_data = track; } - if (opts->call_graph_enabled && !evsel->no_aux_samples) - perf_evsel__config_callgraph(evsel, opts); + if (callchain_param.enabled && !evsel->no_aux_samples) + perf_evsel__config_callgraph(evsel); if (target__has_cpu(&opts->target)) perf_evsel__set_sample_bit(evsel, CPU); -- cgit v1.1 From f7f084f4d3c29b0f9877a32fc6e2feacd47695b9 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Tue, 23 Sep 2014 10:01:42 +0900 Subject: perf callchain: Move some parser functions to callchain.c And rename record_callchain_parse() to parse_callchain_record_opt() in accordance to parse_callchain_report_opt(). Reviewed-by: David Ahern Signed-off-by: Namhyung Kim Acked-by: Jiri Olsa Cc: David Ahern Cc: Ingo Molnar Cc: Jiri Olsa Cc: Milian Wolff Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1411434104-5307-4-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-record.c | 88 ++------------------------------------------- tools/perf/builtin-top.c | 2 +- tools/perf/util/callchain.c | 84 +++++++++++++++++++++++++++++++++++++++++++ tools/perf/util/callchain.h | 2 +- 4 files changed, 88 insertions(+), 88 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index fde0df7..0ee647b 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -624,90 +624,6 @@ error: return ret; } -#ifdef HAVE_DWARF_UNWIND_SUPPORT -static int get_stack_size(char *str, unsigned long *_size) -{ - char *endptr; - unsigned long size; - unsigned long max_size = round_down(USHRT_MAX, sizeof(u64)); - - size = strtoul(str, &endptr, 0); - - do { - if (*endptr) - break; - - size = round_up(size, sizeof(u64)); - if (!size || size > max_size) - break; - - *_size = size; - return 0; - - } while (0); - - pr_err("callchain: Incorrect stack dump size (max %ld): %s\n", - max_size, str); - return -1; -} -#endif /* HAVE_DWARF_UNWIND_SUPPORT */ - -int record_parse_callchain(const char *arg) -{ - char *tok, *name, *saveptr = NULL; - char *buf; - int ret = -1; - - /* We need buffer that we know we can write to. */ - buf = malloc(strlen(arg) + 1); - if (!buf) - return -ENOMEM; - - strcpy(buf, arg); - - tok = strtok_r((char *)buf, ",", &saveptr); - name = tok ? : (char *)buf; - - do { - /* Framepointer style */ - if (!strncmp(name, "fp", sizeof("fp"))) { - if (!strtok_r(NULL, ",", &saveptr)) { - callchain_param.record_mode = CALLCHAIN_FP; - ret = 0; - } else - pr_err("callchain: No more arguments " - "needed for -g fp\n"); - break; - -#ifdef HAVE_DWARF_UNWIND_SUPPORT - /* Dwarf style */ - } else if (!strncmp(name, "dwarf", sizeof("dwarf"))) { - const unsigned long default_stack_dump_size = 8192; - - ret = 0; - callchain_param.record_mode = CALLCHAIN_DWARF; - callchain_param.dump_size = default_stack_dump_size; - - tok = strtok_r(NULL, ",", &saveptr); - if (tok) { - unsigned long size = 0; - - ret = get_stack_size(tok, &size); - callchain_param.dump_size = size; - } -#endif /* HAVE_DWARF_UNWIND_SUPPORT */ - } else { - pr_err("callchain: Unknown --call-graph option " - "value: %s\n", arg); - break; - } - - } while (0); - - free(buf); - return ret; -} - static void callchain_debug(void) { static const char *str[CALLCHAIN_MAX] = { "NONE", "FP", "DWARF" }; @@ -734,7 +650,7 @@ int record_parse_callchain_opt(const struct option *opt __maybe_unused, return 0; } - ret = record_parse_callchain(arg); + ret = parse_callchain_record_opt(arg); if (!ret) callchain_debug(); @@ -757,7 +673,7 @@ int record_callchain_opt(const struct option *opt __maybe_unused, static int perf_record_config(const char *var, const char *value, void *cb) { if (!strcmp(var, "record.call-graph")) - return record_parse_callchain(value); + return parse_callchain_record_opt(value); return perf_default_config(var, value, cb); } diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index f7003fc..9d647a0 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -1021,7 +1021,7 @@ parse_callchain_opt(const struct option *opt, const char *arg, int unset) static int perf_top_config(const char *var, const char *value, void *cb) { if (!strcmp(var, "top.call-graph")) - return record_parse_callchain(value); + return parse_callchain_record_opt(value); if (!strcmp(var, "top.children")) { symbol_conf.cumulate_callchain = perf_config_bool(var, value); return 0; diff --git a/tools/perf/util/callchain.c b/tools/perf/util/callchain.c index 08f0fbf..ba72972 100644 --- a/tools/perf/util/callchain.c +++ b/tools/perf/util/callchain.c @@ -25,6 +25,90 @@ __thread struct callchain_cursor callchain_cursor; +#ifdef HAVE_DWARF_UNWIND_SUPPORT +static int get_stack_size(const char *str, unsigned long *_size) +{ + char *endptr; + unsigned long size; + unsigned long max_size = round_down(USHRT_MAX, sizeof(u64)); + + size = strtoul(str, &endptr, 0); + + do { + if (*endptr) + break; + + size = round_up(size, sizeof(u64)); + if (!size || size > max_size) + break; + + *_size = size; + return 0; + + } while (0); + + pr_err("callchain: Incorrect stack dump size (max %ld): %s\n", + max_size, str); + return -1; +} +#endif /* HAVE_DWARF_UNWIND_SUPPORT */ + +int parse_callchain_record_opt(const char *arg) +{ + char *tok, *name, *saveptr = NULL; + char *buf; + int ret = -1; + + /* We need buffer that we know we can write to. */ + buf = malloc(strlen(arg) + 1); + if (!buf) + return -ENOMEM; + + strcpy(buf, arg); + + tok = strtok_r((char *)buf, ",", &saveptr); + name = tok ? : (char *)buf; + + do { + /* Framepointer style */ + if (!strncmp(name, "fp", sizeof("fp"))) { + if (!strtok_r(NULL, ",", &saveptr)) { + callchain_param.record_mode = CALLCHAIN_FP; + ret = 0; + } else + pr_err("callchain: No more arguments " + "needed for -g fp\n"); + break; + +#ifdef HAVE_DWARF_UNWIND_SUPPORT + /* Dwarf style */ + } else if (!strncmp(name, "dwarf", sizeof("dwarf"))) { + const unsigned long default_stack_dump_size = 8192; + + ret = 0; + callchain_param.record_mode = CALLCHAIN_DWARF; + callchain_param.dump_size = default_stack_dump_size; + + tok = strtok_r(NULL, ",", &saveptr); + if (tok) { + unsigned long size = 0; + + ret = get_stack_size(tok, &size); + callchain_param.dump_size = size; + } +#endif /* HAVE_DWARF_UNWIND_SUPPORT */ + } else { + pr_err("callchain: Unknown --call-graph option " + "value: %s\n", arg); + break; + } + + } while (0); + + free(buf); + return ret; +} + int parse_callchain_report_opt(const char *arg) { diff --git a/tools/perf/util/callchain.h b/tools/perf/util/callchain.h index 819ae4f..8adfbf0 100644 --- a/tools/perf/util/callchain.h +++ b/tools/perf/util/callchain.h @@ -157,7 +157,6 @@ static inline void callchain_cursor_advance(struct callchain_cursor *cursor) struct option; struct hist_entry; -int record_parse_callchain(const char *arg); int record_parse_callchain_opt(const struct option *opt, const char *arg, int unset); int record_callchain_opt(const struct option *opt, const char *arg, int unset); @@ -169,6 +168,7 @@ int fill_callchain_info(struct addr_location *al, struct callchain_cursor_node * bool hide_unresolved); extern const char record_callchain_help[]; +int parse_callchain_record_opt(const char *arg); int parse_callchain_report_opt(const char *arg); static inline void callchain_cursor_snapshot(struct callchain_cursor *dest, -- cgit v1.1 From 2b9240cafe9780f77b257321b13c4c4d2c2d0dc8 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Tue, 23 Sep 2014 10:01:43 +0900 Subject: perf tools: Introduce perf_callchain_config() This patch adds support for following config options to ~/.perfconfig file. [call-graph] record-mode = dwarf dump-size = 8192 print-type = fractal order = callee threshold = 0.5 print-limit = 128 sort-key = function Reviewed-by: David Ahern Signed-off-by: Namhyung Kim Acked-by: Jiri Olsa Cc: David Ahern Cc: Ingo Molnar Cc: Jiri Olsa Cc: Milian Wolff Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1411434104-5307-5-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/callchain.c | 109 ++++++++++++++++++++++++++++++++++++-------- tools/perf/util/callchain.h | 1 + tools/perf/util/config.c | 3 ++ 3 files changed, 94 insertions(+), 19 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/callchain.c b/tools/perf/util/callchain.c index ba72972..c84d3f8 100644 --- a/tools/perf/util/callchain.c +++ b/tools/perf/util/callchain.c @@ -109,6 +109,49 @@ int parse_callchain_record_opt(const char *arg) return ret; } +static int parse_callchain_mode(const char *value) +{ + if (!strncmp(value, "graph", strlen(value))) { + callchain_param.mode = CHAIN_GRAPH_ABS; + return 0; + } + if (!strncmp(value, "flat", strlen(value))) { + callchain_param.mode = CHAIN_FLAT; + return 0; + } + if (!strncmp(value, "fractal", strlen(value))) { + callchain_param.mode = CHAIN_GRAPH_REL; + return 0; + } + return -1; +} + +static int parse_callchain_order(const char *value) +{ + if (!strncmp(value, "caller", strlen(value))) { + callchain_param.order = ORDER_CALLER; + return 0; + } + if (!strncmp(value, "callee", strlen(value))) { + callchain_param.order = ORDER_CALLEE; + return 0; + } + return -1; +} + +static int parse_callchain_sort_key(const char *value) +{ + if (!strncmp(value, "function", strlen(value))) { + callchain_param.key = CCKEY_FUNCTION; + return 0; + } + if (!strncmp(value, "address", strlen(value))) { + callchain_param.key = CCKEY_ADDRESS; + return 0; + } + return -1; +} + int parse_callchain_report_opt(const char *arg) { @@ -128,25 +171,12 @@ parse_callchain_report_opt(const char *arg) return 0; } - /* try to get the output mode */ - if (!strncmp(tok, "graph", strlen(tok))) - callchain_param.mode = CHAIN_GRAPH_ABS; - else if (!strncmp(tok, "flat", strlen(tok))) - callchain_param.mode = CHAIN_FLAT; - else if (!strncmp(tok, "fractal", strlen(tok))) - callchain_param.mode = CHAIN_GRAPH_REL; - /* try to get the call chain order */ - else if (!strncmp(tok, "caller", strlen(tok))) - callchain_param.order = ORDER_CALLER; - else if (!strncmp(tok, "callee", strlen(tok))) - callchain_param.order = ORDER_CALLEE; - /* try to get the sort key */ - else if (!strncmp(tok, "function", strlen(tok))) - callchain_param.key = CCKEY_FUNCTION; - else if (!strncmp(tok, "address", strlen(tok))) - callchain_param.key = CCKEY_ADDRESS; - /* try to get the min percent */ - else if (!minpcnt_set) { + if (!parse_callchain_mode(tok) || + !parse_callchain_order(tok) || + !parse_callchain_sort_key(tok)) { + /* parsing ok - move on to the next */ + } else if (!minpcnt_set) { + /* try to get the min percent */ callchain_param.min_percent = strtod(tok, &endptr); if (tok == endptr) return -1; @@ -168,6 +198,47 @@ parse_callchain_report_opt(const char *arg) return 0; } +int perf_callchain_config(const char *var, const char *value) +{ + char *endptr; + + if (prefixcmp(var, "call-graph.")) + return 0; + var += sizeof("call-graph.") - 1; + + if (!strcmp(var, "record-mode")) + return parse_callchain_record_opt(value); +#ifdef HAVE_DWARF_UNWIND_SUPPORT + if (!strcmp(var, "dump-size")) { + unsigned long size = 0; + int ret; + + ret = get_stack_size(value, &size); + callchain_param.dump_size = size; + + return ret; + } +#endif + if (!strcmp(var, "print-type")) + return parse_callchain_mode(value); + if (!strcmp(var, "order")) + return parse_callchain_order(value); + if (!strcmp(var, "sort-key")) + return parse_callchain_sort_key(value); + if (!strcmp(var, "threshold")) { + callchain_param.min_percent = strtod(value, &endptr); + if (value == endptr) + return -1; + } + if (!strcmp(var, "print-limit")) { + callchain_param.print_limit = strtod(value, &endptr); + if (value == endptr) + return -1; + } + + return 0; +} + static void rb_insert_callchain(struct rb_root *root, struct callchain_node *chain, enum chain_mode mode) diff --git a/tools/perf/util/callchain.h b/tools/perf/util/callchain.h index 8adfbf0..2a1f5a4 100644 --- a/tools/perf/util/callchain.h +++ b/tools/perf/util/callchain.h @@ -170,6 +170,7 @@ int fill_callchain_info(struct addr_location *al, struct callchain_cursor_node * extern const char record_callchain_help[]; int parse_callchain_record_opt(const char *arg); int parse_callchain_report_opt(const char *arg); +int perf_callchain_config(const char *var, const char *value); static inline void callchain_cursor_snapshot(struct callchain_cursor *dest, struct callchain_cursor *src) diff --git a/tools/perf/util/config.c b/tools/perf/util/config.c index 9970b8b..953512e 100644 --- a/tools/perf/util/config.c +++ b/tools/perf/util/config.c @@ -396,6 +396,9 @@ int perf_default_config(const char *var, const char *value, if (!prefixcmp(var, "ui.")) return perf_ui_config(var, value); + if (!prefixcmp(var, "call-graph.")) + return perf_callchain_config(var, value); + /* Add other config variables here. */ return 0; } -- cgit v1.1 From 5a2e5e85989025a3bb23ea5571fdac0cc5787807 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Tue, 23 Sep 2014 10:01:44 +0900 Subject: perf tools: Convert {record,top}.call-graph option to call-graph.record-mode So that it'll be passed to perf_callchain_config(). Reviewed-by: David Ahern Signed-off-by: Namhyung Kim Acked-by: Jiri Olsa Cc: David Ahern Cc: Ingo Molnar Cc: Jiri Olsa Cc: Milian Wolff Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1411434104-5307-6-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-record.c | 2 +- tools/perf/builtin-top.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index 0ee647b..44c6f3d 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -673,7 +673,7 @@ int record_callchain_opt(const struct option *opt __maybe_unused, static int perf_record_config(const char *var, const char *value, void *cb) { if (!strcmp(var, "record.call-graph")) - return parse_callchain_record_opt(value); + var = "call-graph.record-mode"; /* fall-through */ return perf_default_config(var, value, cb); } diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index 9d647a0..fc3d55f 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -1021,7 +1021,7 @@ parse_callchain_opt(const struct option *opt, const char *arg, int unset) static int perf_top_config(const char *var, const char *value, void *cb) { if (!strcmp(var, "top.call-graph")) - return parse_callchain_record_opt(value); + var = "call-graph.record-mode"; /* fall-through */ if (!strcmp(var, "top.children")) { symbol_conf.cumulate_callchain = perf_config_bool(var, value); return 0; -- cgit v1.1 From 49757c9cc7887bc79f742eb8aacf16e464ca5f0b Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Tue, 23 Sep 2014 13:56:56 +0200 Subject: perf tools: Fix line number in the config file error message If we fail to parse the config file within the callback function, the line number counter 'could be' already on the next line. This results in wrong line number report like: $ cat ~/.perfconfig [call-graph] sort-key = krava $ perf record ls Fatal: bad config file line 3 in /home/jolsa/.perfconfig Fixing this by saving the current line number for this case. Signed-off-by: Jiri Olsa Acked-by: Namhyung Kim Cc: Corey Ashford Cc: David Ahern Cc: Ingo Molnar Cc: Milian Wolff Cc: Namhyung Kim Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20140923115656.GC2979@krava.brq.redhat.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/config.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/config.c b/tools/perf/util/config.c index 953512e..57ff826 100644 --- a/tools/perf/util/config.c +++ b/tools/perf/util/config.c @@ -222,7 +222,8 @@ static int perf_parse_file(config_fn_t fn, void *data) const unsigned char *bomptr = utf8_bom; for (;;) { - int c = get_next_char(); + int line, c = get_next_char(); + if (bomptr && *bomptr) { /* We are at the file beginning; skip UTF8-encoded BOM * if present. Sane editors won't put this in on their @@ -261,8 +262,16 @@ static int perf_parse_file(config_fn_t fn, void *data) if (!isalpha(c)) break; var[baselen] = tolower(c); - if (get_value(fn, data, var, baselen+1) < 0) + + /* + * The get_value function might or might not reach the '\n', + * so saving the current line number for error reporting. + */ + line = config_linenr; + if (get_value(fn, data, var, baselen+1) < 0) { + config_linenr = line; break; + } } die("bad config file line %d in %s", config_linenr, config_file_name); } -- cgit v1.1 From 46441bdc76fee08e297ebcf17e4ca91013b1ee9e Mon Sep 17 00:00:00 2001 From: Matt Fleming Date: Wed, 24 Sep 2014 15:04:06 +0100 Subject: perf tools: Refactor unit and scale function parameters Passing pointers to alias modifiers 'unit' and 'scale' isn't very future-proof since if we add more modifiers to the list we'll end up passing more arguments. Instead wrap everything up in a struct perf_pmu_info, which can easily be expanded when additional alias modifiers are necessary in the future. Signed-off-by: Matt Fleming Acked-by: Jiri Olsa Cc: "H. Peter Anvin" Cc: Ingo Molnar Cc: Jiri Olsa Cc: Peter Zijlstra Cc: Thomas Gleixner Link: http://lkml.kernel.org/r/1411567455-31264-3-git-send-email-matt@console-pimps.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/parse-events.c | 9 ++++----- tools/perf/util/pmu.c | 38 +++++++++++++++++++++++--------------- tools/perf/util/pmu.h | 7 ++++++- 3 files changed, 33 insertions(+), 21 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c index 61be3e6..9522cf2 100644 --- a/tools/perf/util/parse-events.c +++ b/tools/perf/util/parse-events.c @@ -634,10 +634,9 @@ int parse_events_add_pmu(struct list_head *list, int *idx, char *name, struct list_head *head_config) { struct perf_event_attr attr; + struct perf_pmu_info info; struct perf_pmu *pmu; struct perf_evsel *evsel; - const char *unit; - double scale; pmu = perf_pmu__find(name); if (!pmu) @@ -656,7 +655,7 @@ int parse_events_add_pmu(struct list_head *list, int *idx, return evsel ? 0 : -ENOMEM; } - if (perf_pmu__check_alias(pmu, head_config, &unit, &scale)) + if (perf_pmu__check_alias(pmu, head_config, &info)) return -EINVAL; /* @@ -671,8 +670,8 @@ int parse_events_add_pmu(struct list_head *list, int *idx, evsel = __add_event(list, idx, &attr, pmu_event_name(head_config), pmu->cpus); if (evsel) { - evsel->unit = unit; - evsel->scale = scale; + evsel->unit = info.unit; + evsel->scale = info.scale; } return evsel ? 0 : -ENOMEM; diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c index 22a4ad5..93a41ca 100644 --- a/tools/perf/util/pmu.c +++ b/tools/perf/util/pmu.c @@ -210,6 +210,19 @@ static int perf_pmu__new_alias(struct list_head *list, char *dir, char *name, FI return 0; } +static inline bool pmu_alias_info_file(char *name) +{ + size_t len; + + len = strlen(name); + if (len > 5 && !strcmp(name + len - 5, ".unit")) + return true; + if (len > 6 && !strcmp(name + len - 6, ".scale")) + return true; + + return false; +} + /* * Process all the sysfs attributes located under the directory * specified in 'dir' parameter. @@ -218,7 +231,6 @@ static int pmu_aliases_parse(char *dir, struct list_head *head) { struct dirent *evt_ent; DIR *event_dir; - size_t len; int ret = 0; event_dir = opendir(dir); @@ -234,13 +246,9 @@ static int pmu_aliases_parse(char *dir, struct list_head *head) continue; /* - * skip .unit and .scale info files - * parsed in perf_pmu__new_alias() + * skip info files parsed in perf_pmu__new_alias() */ - len = strlen(name); - if (len > 5 && !strcmp(name + len - 5, ".unit")) - continue; - if (len > 6 && !strcmp(name + len - 6, ".scale")) + if (pmu_alias_info_file(name)) continue; snprintf(path, PATH_MAX, "%s/%s", dir, name); @@ -645,7 +653,7 @@ static int check_unit_scale(struct perf_pmu_alias *alias, * defined for the alias */ int perf_pmu__check_alias(struct perf_pmu *pmu, struct list_head *head_terms, - const char **unit, double *scale) + struct perf_pmu_info *info) { struct parse_events_term *term, *h; struct perf_pmu_alias *alias; @@ -655,8 +663,8 @@ int perf_pmu__check_alias(struct perf_pmu *pmu, struct list_head *head_terms, * Mark unit and scale as not set * (different from default values, see below) */ - *unit = NULL; - *scale = 0.0; + info->unit = NULL; + info->scale = 0.0; list_for_each_entry_safe(term, h, head_terms, list) { alias = pmu_find_alias(pmu, term); @@ -666,7 +674,7 @@ int perf_pmu__check_alias(struct perf_pmu *pmu, struct list_head *head_terms, if (ret) return ret; - ret = check_unit_scale(alias, unit, scale); + ret = check_unit_scale(alias, &info->unit, &info->scale); if (ret) return ret; @@ -679,11 +687,11 @@ int perf_pmu__check_alias(struct perf_pmu *pmu, struct list_head *head_terms, * set defaults as for evsel * unit cannot left to NULL */ - if (*unit == NULL) - *unit = ""; + if (info->unit == NULL) + info->unit = ""; - if (*scale == 0.0) - *scale = 1.0; + if (info->scale == 0.0) + info->scale = 1.0; return 0; } diff --git a/tools/perf/util/pmu.h b/tools/perf/util/pmu.h index 0f5c0a8..fe90a01 100644 --- a/tools/perf/util/pmu.h +++ b/tools/perf/util/pmu.h @@ -25,6 +25,11 @@ struct perf_pmu { struct list_head list; /* ELEM */ }; +struct perf_pmu_info { + const char *unit; + double scale; +}; + struct perf_pmu *perf_pmu__find(const char *name); int perf_pmu__config(struct perf_pmu *pmu, struct perf_event_attr *attr, struct list_head *head_terms); @@ -33,7 +38,7 @@ int perf_pmu__config_terms(struct list_head *formats, struct list_head *head_terms, bool zero); int perf_pmu__check_alias(struct perf_pmu *pmu, struct list_head *head_terms, - const char **unit, double *scale); + struct perf_pmu_info *info); struct list_head *perf_pmu__alias(struct perf_pmu *pmu, struct list_head *head_terms); int perf_pmu_wrap(void); -- cgit v1.1 From 2c82c3ad56921c47f28af9eb8ed96b6d99b47623 Mon Sep 17 00:00:00 2001 From: Chang Hyun Park Date: Fri, 26 Sep 2014 21:54:01 +0900 Subject: perf trace: Fix mmap return address truncation to 32-bit Using 'perf trace' for mmap is truncating return values by stripping the top 32 bits, actually printing only the lower 32 bits. This was because the ret value was of an 'int' type and not a 'long' type. The Problem: 991258501.244 ( 0.004 ms): mmap(len: 40001536, prot: READ|WRITE, flags: PRIVATE|ANONYMOUS, fd: -1) = 0x56691000 991258501.257 ( 0.000 ms): minfault [_int_malloc+0x1038] => //anon@0x7fa056691008 //(d.) The first line shows an mmap, which succeeds and returns 0x56691000. However the next line shows a memory access to that virtual memory area, specifically to 0x7fa056691008. The upper 32 bit is lost due to the problem mentioned above, and thus mmap's return value didn't have the upper 0x7fa0. Tested on 3.17-rc5 from the linus's tree, and the HEAD of tip/master Signed-off-by: Chang Hyun Park Cc: H. Peter Anvin Cc: Ingo Molnar Cc: Thomas Gleixner Link: http://lkml.kernel.org/r/1411736041-8017-1-git-send-email-heartinpiece@gmail.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-trace.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index c70e69e..09bcf23 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -1695,7 +1695,7 @@ static int trace__sys_exit(struct trace *trace, struct perf_evsel *evsel, union perf_event *event __maybe_unused, struct perf_sample *sample) { - int ret; + long ret; u64 duration = 0; struct thread *thread; int id = perf_evsel__sc_tp_uint(evsel, id, sample); @@ -1748,7 +1748,7 @@ static int trace__sys_exit(struct trace *trace, struct perf_evsel *evsel, if (sc->fmt == NULL) { signed_print: - fprintf(trace->output, ") = %d", ret); + fprintf(trace->output, ") = %ld", ret); } else if (ret < 0 && sc->fmt->errmsg) { char bf[STRERR_BUFSIZE]; const char *emsg = strerror_r(-ret, bf, sizeof(bf)), @@ -1758,7 +1758,7 @@ signed_print: } else if (ret == 0 && sc->fmt->timeout) fprintf(trace->output, ") = 0 Timeout"); else if (sc->fmt->hexret) - fprintf(trace->output, ") = %#x", ret); + fprintf(trace->output, ") = %#lx", ret); else goto signed_print; -- cgit v1.1 From 86c87e13f8a5dffc6cc7b0f37340f815dc172945 Mon Sep 17 00:00:00 2001 From: Davidlohr Bueso Date: Mon, 29 Sep 2014 09:41:07 -0700 Subject: perf bench futex: Support operations for shared futexes Unlike futex-hash, requeuing and wakeup benchmarks do not support shared futexes, limiting the usefulness of the programs. Correct this, and allow using the local -S parameter. The default remains using private futexes. Signed-off-by: Davidlohr Bueso Cc: Davidlohr Bueso Link: http://lkml.kernel.org/r/1412008868-22328-1-git-send-email-dave@stgolabs.net Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/bench/futex-hash.c | 7 +++++-- tools/perf/bench/futex-requeue.c | 24 +++++++++++++++--------- tools/perf/bench/futex-wake.c | 15 ++++++++++----- 3 files changed, 30 insertions(+), 16 deletions(-) (limited to 'tools') diff --git a/tools/perf/bench/futex-hash.c b/tools/perf/bench/futex-hash.c index a84206e..fc9bebd 100644 --- a/tools/perf/bench/futex-hash.c +++ b/tools/perf/bench/futex-hash.c @@ -26,6 +26,7 @@ static unsigned int nsecs = 10; /* amount of futexes per thread */ static unsigned int nfutexes = 1024; static bool fshared = false, done = false, silent = false; +static int futex_flag = 0; struct timeval start, end, runtime; static pthread_mutex_t thread_lock; @@ -75,8 +76,7 @@ static void *workerfn(void *arg) * such as internal waitqueue handling, thus enlarging * the critical region protected by hb->lock. */ - ret = futex_wait(&w->futex[i], 1234, NULL, - fshared ? 0 : FUTEX_PRIVATE_FLAG); + ret = futex_wait(&w->futex[i], 1234, NULL, futex_flag); if (!silent && (!ret || errno != EAGAIN || errno != EWOULDBLOCK)) warn("Non-expected futex return call"); @@ -135,6 +135,9 @@ int bench_futex_hash(int argc, const char **argv, if (!worker) goto errmem; + if (!fshared) + futex_flag = FUTEX_PRIVATE_FLAG; + printf("Run summary [PID %d]: %d threads, each operating on %d [%s] futexes for %d secs.\n\n", getpid(), nthreads, nfutexes, fshared ? "shared":"private", nsecs); diff --git a/tools/perf/bench/futex-requeue.c b/tools/perf/bench/futex-requeue.c index 732403b..9837a88 100644 --- a/tools/perf/bench/futex-requeue.c +++ b/tools/perf/bench/futex-requeue.c @@ -30,16 +30,18 @@ static u_int32_t futex1 = 0, futex2 = 0; static unsigned int nrequeue = 1; static pthread_t *worker; -static bool done = 0, silent = 0; +static bool done = false, silent = false, fshared = false; static pthread_mutex_t thread_lock; static pthread_cond_t thread_parent, thread_worker; static struct stats requeuetime_stats, requeued_stats; static unsigned int ncpus, threads_starting, nthreads = 0; +static int futex_flag = 0; static const struct option options[] = { OPT_UINTEGER('t', "threads", &nthreads, "Specify amount of threads"), OPT_UINTEGER('q', "nrequeue", &nrequeue, "Specify amount of threads to requeue at once"), OPT_BOOLEAN( 's', "silent", &silent, "Silent mode: do not display data/details"), + OPT_BOOLEAN( 'S', "shared", &fshared, "Use shared futexes instead of private ones"), OPT_END() }; @@ -70,7 +72,7 @@ static void *workerfn(void *arg __maybe_unused) pthread_cond_wait(&thread_worker, &thread_lock); pthread_mutex_unlock(&thread_lock); - futex_wait(&futex1, 0, NULL, FUTEX_PRIVATE_FLAG); + futex_wait(&futex1, 0, NULL, futex_flag); return NULL; } @@ -127,9 +129,12 @@ int bench_futex_requeue(int argc, const char **argv, if (!worker) err(EXIT_FAILURE, "calloc"); - printf("Run summary [PID %d]: Requeuing %d threads (from %p to %p), " - "%d at a time.\n\n", - getpid(), nthreads, &futex1, &futex2, nrequeue); + if (!fshared) + futex_flag = FUTEX_PRIVATE_FLAG; + + printf("Run summary [PID %d]: Requeuing %d threads (from [%s] %p to %p), " + "%d at a time.\n\n", getpid(), nthreads, + fshared ? "shared":"private", &futex1, &futex2, nrequeue); init_stats(&requeued_stats); init_stats(&requeuetime_stats); @@ -156,13 +161,14 @@ int bench_futex_requeue(int argc, const char **argv, /* Ok, all threads are patiently blocked, start requeueing */ gettimeofday(&start, NULL); - for (nrequeued = 0; nrequeued < nthreads; nrequeued += nrequeue) + for (nrequeued = 0; nrequeued < nthreads; nrequeued += nrequeue) { /* * Do not wakeup any tasks blocked on futex1, allowing * us to really measure futex_wait functionality. */ - futex_cmp_requeue(&futex1, 0, &futex2, 0, nrequeue, - FUTEX_PRIVATE_FLAG); + futex_cmp_requeue(&futex1, 0, &futex2, 0, + nrequeue, futex_flag); + } gettimeofday(&end, NULL); timersub(&end, &start, &runtime); @@ -175,7 +181,7 @@ int bench_futex_requeue(int argc, const char **argv, } /* everybody should be blocked on futex2, wake'em up */ - nrequeued = futex_wake(&futex2, nthreads, FUTEX_PRIVATE_FLAG); + nrequeued = futex_wake(&futex2, nthreads, futex_flag); if (nthreads != nrequeued) warnx("couldn't wakeup all tasks (%d/%d)", nrequeued, nthreads); diff --git a/tools/perf/bench/futex-wake.c b/tools/perf/bench/futex-wake.c index 50022cb..929f762 100644 --- a/tools/perf/bench/futex-wake.c +++ b/tools/perf/bench/futex-wake.c @@ -31,16 +31,18 @@ static u_int32_t futex1 = 0; static unsigned int nwakes = 1; pthread_t *worker; -static bool done = false, silent = false; +static bool done = false, silent = false, fshared = false; static pthread_mutex_t thread_lock; static pthread_cond_t thread_parent, thread_worker; static struct stats waketime_stats, wakeup_stats; static unsigned int ncpus, threads_starting, nthreads = 0; +static int futex_flag = 0; static const struct option options[] = { OPT_UINTEGER('t', "threads", &nthreads, "Specify amount of threads"), OPT_UINTEGER('w', "nwakes", &nwakes, "Specify amount of threads to wake at once"), OPT_BOOLEAN( 's', "silent", &silent, "Silent mode: do not display data/details"), + OPT_BOOLEAN( 'S', "shared", &fshared, "Use shared futexes instead of private ones"), OPT_END() }; @@ -58,7 +60,7 @@ static void *workerfn(void *arg __maybe_unused) pthread_cond_wait(&thread_worker, &thread_lock); pthread_mutex_unlock(&thread_lock); - futex_wait(&futex1, 0, NULL, FUTEX_PRIVATE_FLAG); + futex_wait(&futex1, 0, NULL, futex_flag); return NULL; } @@ -130,9 +132,12 @@ int bench_futex_wake(int argc, const char **argv, if (!worker) err(EXIT_FAILURE, "calloc"); - printf("Run summary [PID %d]: blocking on %d threads (at futex %p), " + if (!fshared) + futex_flag = FUTEX_PRIVATE_FLAG; + + printf("Run summary [PID %d]: blocking on %d threads (at [%s] futex %p), " "waking up %d at a time.\n\n", - getpid(), nthreads, &futex1, nwakes); + getpid(), nthreads, fshared ? "shared":"private", &futex1, nwakes); init_stats(&wakeup_stats); init_stats(&waketime_stats); @@ -160,7 +165,7 @@ int bench_futex_wake(int argc, const char **argv, /* Ok, all threads are patiently blocked, start waking folks up */ gettimeofday(&start, NULL); while (nwoken != nthreads) - nwoken += futex_wake(&futex1, nwakes, FUTEX_PRIVATE_FLAG); + nwoken += futex_wake(&futex1, nwakes, futex_flag); gettimeofday(&end, NULL); timersub(&end, &start, &runtime); -- cgit v1.1 From e19685ed24b518440c0717719ff02e74c0e6d2cb Mon Sep 17 00:00:00 2001 From: Davidlohr Bueso Date: Mon, 29 Sep 2014 09:41:08 -0700 Subject: perf bench futex: Sanitize -q option in requeue When given the number of threads to requeue at once by user input, there's always the risk of this value being larger than the total number of threads. This doesn't make any sense, and the kernel can easily deal with such sort of situations, hence no big deal. We should however prevent bogus output such as: ./perf bench --repeat 2 futex requeue -q 10 Run summary [PID 22210]: Requeuing 4 threads (from [private] 0x99ef3c to 0x99ef38), 10 at a time. [Run 1]: Requeued 10 of 4 threads in 0.0040 ms [Run 2]: Requeued 10 of 4 threads in 0.0030 ms Requeued 10 of 4 threads in 0.0035 ms (+-14.29%) Signed-off-by: Davidlohr Bueso Cc: Davidlohr Bueso Link: http://lkml.kernel.org/r/1412008868-22328-2-git-send-email-dave@stgolabs.net Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/bench/futex-requeue.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/bench/futex-requeue.c b/tools/perf/bench/futex-requeue.c index 9837a88..bedff6b 100644 --- a/tools/perf/bench/futex-requeue.c +++ b/tools/perf/bench/futex-requeue.c @@ -172,6 +172,9 @@ int bench_futex_requeue(int argc, const char **argv, gettimeofday(&end, NULL); timersub(&end, &start, &runtime); + if (nrequeued > nthreads) + nrequeued = nthreads; + update_stats(&requeued_stats, nrequeued); update_stats(&requeuetime_stats, runtime.tv_usec); @@ -190,7 +193,6 @@ int bench_futex_requeue(int argc, const char **argv, if (ret) err(EXIT_FAILURE, "pthread_join"); } - } /* cleanup & report results */ -- cgit v1.1 From 8fa7d87f91479f7124142ca4ad93a37b80f8c1c0 Mon Sep 17 00:00:00 2001 From: Waiman Long Date: Mon, 29 Sep 2014 16:07:28 -0400 Subject: perf symbols: Encapsulate dsos list head into struct dsos This is a precursor patch to enable long name searching of DSOs using a rbtree. In this patch, a new dsos structure is created which contains only a list head structure for the moment. The new dsos structure is used, in turn, in the machine structure for the user_dsos and kernel_dsos fields. Only the following 3 dsos functions are modified to accept the new dsos structure parameter instead of list_head: - dsos__add() - dsos__find() - __dsos__findnew() Signed-off-by: Waiman Long Cc: Adrian Hunter Cc: Don Zickus Cc: Douglas Hatch Cc: Ingo Molnar Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Scott J Norton Link: http://lkml.kernel.org/r/1412021249-19201-2-git-send-email-Waiman.Long@hp.com [ Move struct dsos to dso.h to reduce the dso methods depends on machine.h ] Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/dso.c | 17 +++++++++-------- tools/perf/util/dso.h | 13 ++++++++++--- tools/perf/util/header.c | 32 ++++++++++++++++++-------------- tools/perf/util/machine.c | 24 ++++++++++++------------ tools/perf/util/machine.h | 5 +++-- tools/perf/util/probe-event.c | 3 ++- tools/perf/util/symbol-elf.c | 7 ++++++- 7 files changed, 60 insertions(+), 41 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/dso.c b/tools/perf/util/dso.c index 55e39dc..901a58f 100644 --- a/tools/perf/util/dso.c +++ b/tools/perf/util/dso.c @@ -851,35 +851,36 @@ bool __dsos__read_build_ids(struct list_head *head, bool with_hits) return have_build_id; } -void dsos__add(struct list_head *head, struct dso *dso) +void dsos__add(struct dsos *dsos, struct dso *dso) { - list_add_tail(&dso->node, head); + list_add_tail(&dso->node, &dsos->head); } -struct dso *dsos__find(const struct list_head *head, const char *name, bool cmp_short) +struct dso *dsos__find(const struct dsos *dsos, const char *name, + bool cmp_short) { struct dso *pos; if (cmp_short) { - list_for_each_entry(pos, head, node) + list_for_each_entry(pos, &dsos->head, node) if (strcmp(pos->short_name, name) == 0) return pos; return NULL; } - list_for_each_entry(pos, head, node) + list_for_each_entry(pos, &dsos->head, node) if (strcmp(pos->long_name, name) == 0) return pos; return NULL; } -struct dso *__dsos__findnew(struct list_head *head, const char *name) +struct dso *__dsos__findnew(struct dsos *dsos, const char *name) { - struct dso *dso = dsos__find(head, name, false); + struct dso *dso = dsos__find(dsos, name, false); if (!dso) { dso = dso__new(name); if (dso != NULL) { - dsos__add(head, dso); + dsos__add(dsos, dso); dso__set_basename(dso); } } diff --git a/tools/perf/util/dso.h b/tools/perf/util/dso.h index 5e463c0..b63dc98 100644 --- a/tools/perf/util/dso.h +++ b/tools/perf/util/dso.h @@ -90,6 +90,13 @@ struct dso_cache { char data[0]; }; +/* + * DSOs are put into a list for fast iteration. + */ +struct dsos { + struct list_head head; +}; + struct dso { struct list_head node; struct rb_root symbols[MAP__NR_TYPES]; @@ -224,10 +231,10 @@ struct map *dso__new_map(const char *name); struct dso *dso__kernel_findnew(struct machine *machine, const char *name, const char *short_name, int dso_type); -void dsos__add(struct list_head *head, struct dso *dso); -struct dso *dsos__find(const struct list_head *head, const char *name, +void dsos__add(struct dsos *dsos, struct dso *dso); +struct dso *dsos__find(const struct dsos *dsos, const char *name, bool cmp_short); -struct dso *__dsos__findnew(struct list_head *head, const char *name); +struct dso *__dsos__findnew(struct dsos *dsos, const char *name); bool __dsos__read_build_ids(struct list_head *head, bool with_hits); size_t __dsos__fprintf_buildid(struct list_head *head, FILE *fp, diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c index 158c787..ce0de00 100644 --- a/tools/perf/util/header.c +++ b/tools/perf/util/header.c @@ -214,11 +214,11 @@ static int machine__hit_all_dsos(struct machine *machine) { int err; - err = __dsos__hit_all(&machine->kernel_dsos); + err = __dsos__hit_all(&machine->kernel_dsos.head); if (err) return err; - return __dsos__hit_all(&machine->user_dsos); + return __dsos__hit_all(&machine->user_dsos.head); } int dsos__hit_all(struct perf_session *session) @@ -288,11 +288,12 @@ static int machine__write_buildid_table(struct machine *machine, int fd) umisc = PERF_RECORD_MISC_GUEST_USER; } - err = __dsos__write_buildid_table(&machine->kernel_dsos, machine, + err = __dsos__write_buildid_table(&machine->kernel_dsos.head, machine, machine->pid, kmisc, fd); if (err == 0) - err = __dsos__write_buildid_table(&machine->user_dsos, machine, - machine->pid, umisc, fd); + err = __dsos__write_buildid_table(&machine->user_dsos.head, + machine, machine->pid, umisc, + fd); return err; } @@ -455,9 +456,10 @@ static int __dsos__cache_build_ids(struct list_head *head, static int machine__cache_build_ids(struct machine *machine, const char *debugdir) { - int ret = __dsos__cache_build_ids(&machine->kernel_dsos, machine, + int ret = __dsos__cache_build_ids(&machine->kernel_dsos.head, machine, debugdir); - ret |= __dsos__cache_build_ids(&machine->user_dsos, machine, debugdir); + ret |= __dsos__cache_build_ids(&machine->user_dsos.head, machine, + debugdir); return ret; } @@ -483,8 +485,10 @@ static int perf_session__cache_build_ids(struct perf_session *session) static bool machine__read_build_ids(struct machine *machine, bool with_hits) { - bool ret = __dsos__read_build_ids(&machine->kernel_dsos, with_hits); - ret |= __dsos__read_build_ids(&machine->user_dsos, with_hits); + bool ret; + + ret = __dsos__read_build_ids(&machine->kernel_dsos.head, with_hits); + ret |= __dsos__read_build_ids(&machine->user_dsos.head, with_hits); return ret; } @@ -1548,7 +1552,7 @@ static int __event_process_build_id(struct build_id_event *bev, struct perf_session *session) { int err = -1; - struct list_head *head; + struct dsos *dsos; struct machine *machine; u16 misc; struct dso *dso; @@ -1563,22 +1567,22 @@ static int __event_process_build_id(struct build_id_event *bev, switch (misc) { case PERF_RECORD_MISC_KERNEL: dso_type = DSO_TYPE_KERNEL; - head = &machine->kernel_dsos; + dsos = &machine->kernel_dsos; break; case PERF_RECORD_MISC_GUEST_KERNEL: dso_type = DSO_TYPE_GUEST_KERNEL; - head = &machine->kernel_dsos; + dsos = &machine->kernel_dsos; break; case PERF_RECORD_MISC_USER: case PERF_RECORD_MISC_GUEST_USER: dso_type = DSO_TYPE_USER; - head = &machine->user_dsos; + dsos = &machine->user_dsos; break; default: goto out; } - dso = __dsos__findnew(head, filename); + dso = __dsos__findnew(dsos, filename); if (dso != NULL) { char sbuild_id[BUILD_ID_SIZE * 2 + 1]; diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c index b2ec38b..49a75ec 100644 --- a/tools/perf/util/machine.c +++ b/tools/perf/util/machine.c @@ -17,8 +17,8 @@ int machine__init(struct machine *machine, const char *root_dir, pid_t pid) { map_groups__init(&machine->kmaps); RB_CLEAR_NODE(&machine->rb_node); - INIT_LIST_HEAD(&machine->user_dsos); - INIT_LIST_HEAD(&machine->kernel_dsos); + INIT_LIST_HEAD(&machine->user_dsos.head); + INIT_LIST_HEAD(&machine->kernel_dsos.head); machine->threads = RB_ROOT; INIT_LIST_HEAD(&machine->dead_threads); @@ -72,11 +72,11 @@ out_delete: return NULL; } -static void dsos__delete(struct list_head *dsos) +static void dsos__delete(struct dsos *dsos) { struct dso *pos, *n; - list_for_each_entry_safe(pos, n, dsos, node) { + list_for_each_entry_safe(pos, n, &dsos->head, node) { list_del(&pos->node); dso__delete(pos); } @@ -477,23 +477,23 @@ struct map *machine__new_module(struct machine *machine, u64 start, size_t machines__fprintf_dsos(struct machines *machines, FILE *fp) { struct rb_node *nd; - size_t ret = __dsos__fprintf(&machines->host.kernel_dsos, fp) + - __dsos__fprintf(&machines->host.user_dsos, fp); + size_t ret = __dsos__fprintf(&machines->host.kernel_dsos.head, fp) + + __dsos__fprintf(&machines->host.user_dsos.head, fp); for (nd = rb_first(&machines->guests); nd; nd = rb_next(nd)) { struct machine *pos = rb_entry(nd, struct machine, rb_node); - ret += __dsos__fprintf(&pos->kernel_dsos, fp); - ret += __dsos__fprintf(&pos->user_dsos, fp); + ret += __dsos__fprintf(&pos->kernel_dsos.head, fp); + ret += __dsos__fprintf(&pos->user_dsos.head, fp); } return ret; } -size_t machine__fprintf_dsos_buildid(struct machine *machine, FILE *fp, +size_t machine__fprintf_dsos_buildid(struct machine *m, FILE *fp, bool (skip)(struct dso *dso, int parm), int parm) { - return __dsos__fprintf_buildid(&machine->kernel_dsos, fp, skip, parm) + - __dsos__fprintf_buildid(&machine->user_dsos, fp, skip, parm); + return __dsos__fprintf_buildid(&m->kernel_dsos.head, fp, skip, parm) + + __dsos__fprintf_buildid(&m->user_dsos.head, fp, skip, parm); } size_t machines__fprintf_dsos_buildid(struct machines *machines, FILE *fp, @@ -994,7 +994,7 @@ static bool machine__uses_kcore(struct machine *machine) { struct dso *dso; - list_for_each_entry(dso, &machine->kernel_dsos, node) { + list_for_each_entry(dso, &machine->kernel_dsos.head, node) { if (dso__is_kcore(dso)) return true; } diff --git a/tools/perf/util/machine.h b/tools/perf/util/machine.h index 6a6bcc1..2b651a7 100644 --- a/tools/perf/util/machine.h +++ b/tools/perf/util/machine.h @@ -4,6 +4,7 @@ #include #include #include "map.h" +#include "dso.h" #include "event.h" struct addr_location; @@ -32,8 +33,8 @@ struct machine { struct list_head dead_threads; struct thread *last_match; struct vdso_info *vdso_info; - struct list_head user_dsos; - struct list_head kernel_dsos; + struct dsos user_dsos; + struct dsos kernel_dsos; struct map_groups kmaps; struct map *vmlinux_maps[MAP__NR_TYPES]; u64 kernel_start; diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c index be37b5a..c150ca4 100644 --- a/tools/perf/util/probe-event.c +++ b/tools/perf/util/probe-event.c @@ -184,7 +184,8 @@ static struct dso *kernel_get_module_dso(const char *module) const char *vmlinux_name; if (module) { - list_for_each_entry(dso, &host_machine->kernel_dsos, node) { + list_for_each_entry(dso, &host_machine->kernel_dsos.head, + node) { if (strncmp(dso->short_name + 1, module, dso->short_name_len - 2) == 0) goto found; diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c index 2a92e10..1e23a5b 100644 --- a/tools/perf/util/symbol-elf.c +++ b/tools/perf/util/symbol-elf.c @@ -6,6 +6,7 @@ #include #include "symbol.h" +#include "machine.h" #include "vdso.h" #include #include "debug.h" @@ -929,7 +930,11 @@ int dso__load_sym(struct dso *dso, struct map *map, } curr_dso->symtab_type = dso->symtab_type; map_groups__insert(kmap->kmaps, curr_map); - dsos__add(&dso->node, curr_dso); + /* + * The new DSO should go to the kernel DSOS + */ + dsos__add(&map->groups->machine->kernel_dsos, + curr_dso); dso__set_loaded(curr_dso, map->type); } else curr_dso = curr_map->dso; -- cgit v1.1 From 4598a0a6d22fadfb7b37f2b44ee7fdcb24632fcf Mon Sep 17 00:00:00 2001 From: Waiman Long Date: Tue, 30 Sep 2014 13:36:15 -0400 Subject: perf symbols: Improve DSO long names lookup speed with rbtree With workload that spawns and destroys many threads and processes, it was found that perf-mem could took a long time to post-process the perf data after the target workload had completed its operation. The performance bottleneck was found to be the lookup and insertion of the new DSO structures (thousands of them in this case). In a dual-socket Ivy-Bridge E7-4890 v2 machine (30-core, 60-thread), the perf profile below shows what perf was doing after the profiled AIM7 shared workload completed: - 83.94% perf libc-2.11.3.so [.] __strcmp_sse42 - __strcmp_sse42 - 99.82% map__new machine__process_mmap_event perf_session_deliver_event perf_session__process_event __perf_session__process_events cmd_record cmd_mem run_builtin main __libc_start_main - 13.17% perf perf [.] __dsos__findnew __dsos__findnew map__new machine__process_mmap_event perf_session_deliver_event perf_session__process_event __perf_session__process_events cmd_record cmd_mem run_builtin main __libc_start_main So about 97% of CPU times were spent in the map__new() function trying to insert new DSO entry into the DSO linked list. The whole post-processing step took about 9 minutes. The DSO structures are currently searched linearly. So the total processing time will be proportional to n^2. To overcome this performance problem, the DSO code is modified to also put the DSO structures in a RB tree sorted by its long name in additional to being in a simple linked list. With this change, the processing time will become proportional to n*log(n) which will be much quicker for large n. However, the short name will still be searched using the old linear searching method. With that patch in place, the same perf-mem post-processing step took less than 30 seconds to complete. Signed-off-by: Waiman Long Cc: Adrian Hunter Cc: Don Zickus Cc: Douglas Hatch Cc: Ingo Molnar Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Scott J Norton Link: http://lkml.kernel.org/r/1412098575-27863-3-git-send-email-Waiman.Long@hp.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/dso.c | 70 ++++++++++++++++++++++++++++++++++++++++++++--- tools/perf/util/dso.h | 5 +++- tools/perf/util/machine.c | 1 + 3 files changed, 71 insertions(+), 5 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/dso.c b/tools/perf/util/dso.c index 901a58f..0247acf 100644 --- a/tools/perf/util/dso.c +++ b/tools/perf/util/dso.c @@ -653,6 +653,65 @@ struct dso *dso__kernel_findnew(struct machine *machine, const char *name, return dso; } +/* + * Find a matching entry and/or link current entry to RB tree. + * Either one of the dso or name parameter must be non-NULL or the + * function will not work. + */ +static struct dso *dso__findlink_by_longname(struct rb_root *root, + struct dso *dso, const char *name) +{ + struct rb_node **p = &root->rb_node; + struct rb_node *parent = NULL; + + if (!name) + name = dso->long_name; + /* + * Find node with the matching name + */ + while (*p) { + struct dso *this = rb_entry(*p, struct dso, rb_node); + int rc = strcmp(name, this->long_name); + + parent = *p; + if (rc == 0) { + /* + * In case the new DSO is a duplicate of an existing + * one, print an one-time warning & put the new entry + * at the end of the list of duplicates. + */ + if (!dso || (dso == this)) + return this; /* Find matching dso */ + /* + * The core kernel DSOs may have duplicated long name. + * In this case, the short name should be different. + * Comparing the short names to differentiate the DSOs. + */ + rc = strcmp(dso->short_name, this->short_name); + if (rc == 0) { + pr_err("Duplicated dso name: %s\n", name); + return NULL; + } + } + if (rc < 0) + p = &parent->rb_left; + else + p = &parent->rb_right; + } + if (dso) { + /* Add new node and rebalance tree */ + rb_link_node(&dso->rb_node, parent, p); + rb_insert_color(&dso->rb_node, root); + } + return NULL; +} + +static inline struct dso * +dso__find_by_longname(const struct rb_root *root, const char *name) +{ + return dso__findlink_by_longname((struct rb_root *)root, NULL, name); +} + void dso__set_long_name(struct dso *dso, const char *name, bool name_allocated) { if (name == NULL) @@ -755,6 +814,7 @@ struct dso *dso__new(const char *name) dso->a2l_fails = 1; dso->kernel = DSO_TYPE_USER; dso->needs_swap = DSO_SWAP__UNSET; + RB_CLEAR_NODE(&dso->rb_node); INIT_LIST_HEAD(&dso->node); INIT_LIST_HEAD(&dso->data.open_entry); } @@ -765,6 +825,10 @@ struct dso *dso__new(const char *name) void dso__delete(struct dso *dso) { int i; + + if (!RB_EMPTY_NODE(&dso->rb_node)) + pr_err("DSO %s is still in rbtree when being deleted!\n", + dso->long_name); for (i = 0; i < MAP__NR_TYPES; ++i) symbols__delete(&dso->symbols[i]); @@ -854,6 +918,7 @@ bool __dsos__read_build_ids(struct list_head *head, bool with_hits) void dsos__add(struct dsos *dsos, struct dso *dso) { list_add_tail(&dso->node, &dsos->head); + dso__findlink_by_longname(&dsos->root, dso, NULL); } struct dso *dsos__find(const struct dsos *dsos, const char *name, @@ -867,10 +932,7 @@ struct dso *dsos__find(const struct dsos *dsos, const char *name, return pos; return NULL; } - list_for_each_entry(pos, &dsos->head, node) - if (strcmp(pos->long_name, name) == 0) - return pos; - return NULL; + return dso__find_by_longname(&dsos->root, name); } struct dso *__dsos__findnew(struct dsos *dsos, const char *name) diff --git a/tools/perf/util/dso.h b/tools/perf/util/dso.h index b63dc98..acb651a 100644 --- a/tools/perf/util/dso.h +++ b/tools/perf/util/dso.h @@ -91,14 +91,17 @@ struct dso_cache { }; /* - * DSOs are put into a list for fast iteration. + * DSOs are put into both a list for fast iteration and rbtree for fast + * long name lookup. */ struct dsos { struct list_head head; + struct rb_root root; /* rbtree root sorted by long name */ }; struct dso { struct list_head node; + struct rb_node rb_node; /* rbtree node sorted by long name */ struct rb_root symbols[MAP__NR_TYPES]; struct rb_root symbol_names[MAP__NR_TYPES]; void *a2l; diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c index 49a75ec..b7d477f 100644 --- a/tools/perf/util/machine.c +++ b/tools/perf/util/machine.c @@ -77,6 +77,7 @@ static void dsos__delete(struct dsos *dsos) struct dso *pos, *n; list_for_each_entry_safe(pos, n, &dsos->head, node) { + RB_CLEAR_NODE(&pos->rb_node); list_del(&pos->node); dso__delete(pos); } -- cgit v1.1 From 660d13296bbbe79635d1d9d700080b88061faffb Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Tue, 30 Sep 2014 12:27:12 +0100 Subject: perf tools: Fix build breakage on arm64 targets Attempting to build the perf tool for an arm64 target results in the following failure: arch/arm64/util/unwind-libunwind.c: In function 'libunwind__arch_reg_id': arch/arm64/util/unwind-libunwind.c:77:3: error: implicit declaration of function 'pr_err' pr_err("unwind: invalid reg id %d\n", regnum); ^ arch/arm64/util/unwind-libunwind.c:77:3: error: nested extern declaration of 'pr_err' This is due to commit 84f5d36f4866 ("perf tools: Move pr_* debug macros into debug object") moving the pr_* macros into a new header file, but failing to update architectures other than x86. This patch adds the missing include, and fixes the build again. Signed-off-by: Will Deacon Cc: Jean Pihet Cc: Jiri Olsa Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/1412076432-22045-1-git-send-email-will.deacon@arm.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/arch/arm64/util/unwind-libunwind.c | 1 + 1 file changed, 1 insertion(+) (limited to 'tools') diff --git a/tools/perf/arch/arm64/util/unwind-libunwind.c b/tools/perf/arch/arm64/util/unwind-libunwind.c index 436ee43..a87afa9 100644 --- a/tools/perf/arch/arm64/util/unwind-libunwind.c +++ b/tools/perf/arch/arm64/util/unwind-libunwind.c @@ -3,6 +3,7 @@ #include #include "perf_regs.h" #include "../../util/unwind.h" +#include "../../util/debug.h" int libunwind__arch_reg_id(int regnum) { -- cgit v1.1 From 281f92f233a59ef52bb45287242bd815a67f5647 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Wed, 1 Oct 2014 15:05:32 -0300 Subject: perf record: Fix error message for --filter option not coming after tracepoint [root@zoo ~]# perf record --filter "common_pid != PERF_PID" -a -F option should follow a -e tracepoint option. The -F option is for --freq, not --filter. Fix it up to show: [root@zoo ~]# perf record --filter "common_pid != PERF_PID" -a --filter option should follow a -e tracepoint option Cc: Adrian Hunter Cc: Andi Kleen Cc: David Ahern Cc: Don Zickus Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Mike Galbraith Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-z0yrm8stn9w3423nkov3eksg@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/parse-events.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c index 9522cf2..d76aa30 100644 --- a/tools/perf/util/parse-events.c +++ b/tools/perf/util/parse-events.c @@ -984,7 +984,7 @@ int parse_filter(const struct option *opt, const char *str, if (last == NULL || last->attr.type != PERF_TYPE_TRACEPOINT) { fprintf(stderr, - "-F option should follow a -e tracepoint option\n"); + "--filter option should follow a -e tracepoint option\n"); return -1; } -- cgit v1.1