diff options
25 files changed, 168 insertions, 69 deletions
diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c index 87eab4a..eed3673a 100644 --- a/arch/x86/kernel/cpu/perf_event.c +++ b/arch/x86/kernel/cpu/perf_event.c @@ -500,12 +500,17 @@ static bool check_hw_exists(void) return true; bios_fail: - printk(KERN_CONT "Broken BIOS detected, using software events only.\n"); + /* + * We still allow the PMU driver to operate: + */ + printk(KERN_CONT "Broken BIOS detected, complain to your hardware vendor.\n"); printk(KERN_ERR FW_BUG "the BIOS has corrupted hw-PMU resources (MSR %x is %Lx)\n", reg, val); - return false; + + return true; msr_fail: printk(KERN_CONT "Broken PMU hardware detected, using software events only.\n"); + return false; } @@ -912,7 +917,7 @@ static inline void x86_assign_hw_event(struct perf_event *event, hwc->event_base = 0; } else if (hwc->idx >= X86_PMC_IDX_FIXED) { hwc->config_base = MSR_ARCH_PERFMON_FIXED_CTR_CTRL; - hwc->event_base = MSR_ARCH_PERFMON_FIXED_CTR0; + hwc->event_base = MSR_ARCH_PERFMON_FIXED_CTR0 + (hwc->idx - X86_PMC_IDX_FIXED); } else { hwc->config_base = x86_pmu_config_addr(hwc->idx); hwc->event_base = x86_pmu_event_addr(hwc->idx); diff --git a/arch/x86/kernel/cpu/perf_event_p4.c b/arch/x86/kernel/cpu/perf_event_p4.c index 0811f5e..c2520e1 100644 --- a/arch/x86/kernel/cpu/perf_event_p4.c +++ b/arch/x86/kernel/cpu/perf_event_p4.c @@ -777,6 +777,7 @@ static inline int p4_pmu_clear_cccr_ovf(struct hw_perf_event *hwc) * the counter has reached zero value and continued counting before * real NMI signal was received: */ + rdmsrl(hwc->event_base, v); if (!(v & ARCH_P4_UNFLAGGED_BIT)) return 1; diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index f495c01..311b4dc 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -938,9 +938,7 @@ struct perf_cpu_context { struct list_head rotation_list; int jiffies_interval; struct pmu *active_pmu; -#ifdef CONFIG_CGROUP_PERF struct perf_cgroup *cgrp; -#endif }; struct perf_output_handle { diff --git a/kernel/perf_event.c b/kernel/perf_event.c index 3472bb1..c75925c 100644 --- a/kernel/perf_event.c +++ b/kernel/perf_event.c @@ -145,7 +145,8 @@ static struct srcu_struct pmus_srcu; */ int sysctl_perf_event_paranoid __read_mostly = 1; -int sysctl_perf_event_mlock __read_mostly = 512; /* 'free' kb per user */ +/* Minimum for 128 pages + 1 for the user control page */ +int sysctl_perf_event_mlock __read_mostly = 516; /* 'free' kb per user */ /* * max perf event sample rate @@ -941,6 +942,7 @@ static void perf_group_attach(struct perf_event *event) static void list_del_event(struct perf_event *event, struct perf_event_context *ctx) { + struct perf_cpu_context *cpuctx; /* * We can have double detach due to exit/hot-unplug + close. */ @@ -949,8 +951,17 @@ list_del_event(struct perf_event *event, struct perf_event_context *ctx) event->attach_state &= ~PERF_ATTACH_CONTEXT; - if (is_cgroup_event(event)) + if (is_cgroup_event(event)) { ctx->nr_cgroups--; + cpuctx = __get_cpu_context(ctx); + /* + * if there are no more cgroup events + * then cler cgrp to avoid stale pointer + * in update_cgrp_time_from_cpuctx() + */ + if (!ctx->nr_cgroups) + cpuctx->cgrp = NULL; + } ctx->nr_events--; if (event->attr.inherit_stat) diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index 888b611..c075f4e 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -1467,7 +1467,7 @@ t_next(struct seq_file *m, void *v, loff_t *pos) return t_hash_next(m, pos); (*pos)++; - iter->pos = *pos; + iter->pos = iter->func_pos = *pos; if (iter->flags & FTRACE_ITER_PRINTALL) return t_hash_start(m, pos); @@ -1502,7 +1502,6 @@ t_next(struct seq_file *m, void *v, loff_t *pos) if (!rec) return t_hash_start(m, pos); - iter->func_pos = *pos; iter->func = rec; return iter; diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c index 695de4b..e18eb7e 100644 --- a/tools/perf/builtin-annotate.c +++ b/tools/perf/builtin-annotate.c @@ -42,9 +42,9 @@ static const char *sym_hist_filter; static int perf_evlist__add_sample(struct perf_evlist *evlist, struct perf_sample *sample, + struct perf_evsel *evsel, struct addr_location *al) { - struct perf_evsel *evsel; struct hist_entry *he; int ret; @@ -59,18 +59,6 @@ static int perf_evlist__add_sample(struct perf_evlist *evlist, return 0; } - evsel = perf_evlist__id2evsel(evlist, sample->id); - if (evsel == NULL) { - /* - * FIXME: Propagate this back, but at least we're in a builtin, - * where exit() is allowed. ;-) - */ - ui__warning("Invalid %s file, contains samples with id not in " - "its header!\n", input_name); - exit_browser(0); - exit(1); - } - he = __hists__add_entry(&evsel->hists, al, NULL, 1); if (he == NULL) return -ENOMEM; @@ -92,6 +80,7 @@ static int perf_evlist__add_sample(struct perf_evlist *evlist, static int process_sample_event(union perf_event *event, struct perf_sample *sample, + struct perf_evsel *evsel, struct perf_session *session) { struct addr_location al; @@ -103,7 +92,8 @@ static int process_sample_event(union perf_event *event, return -1; } - if (!al.filtered && perf_evlist__add_sample(session->evlist, sample, &al)) { + if (!al.filtered && + perf_evlist__add_sample(session->evlist, sample, evsel, &al)) { pr_warning("problem incrementing symbol count, " "skipping event\n"); return -1; diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c index 6b7d911..e821999 100644 --- a/tools/perf/builtin-diff.c +++ b/tools/perf/builtin-diff.c @@ -32,6 +32,7 @@ static int hists__add_entry(struct hists *self, static int diff__process_sample_event(union perf_event *event, struct perf_sample *sample, + struct perf_evsel *evsel __used, struct perf_session *session) { struct addr_location al; diff --git a/tools/perf/builtin-inject.c b/tools/perf/builtin-inject.c index e29f04e..8dfc12b 100644 --- a/tools/perf/builtin-inject.c +++ b/tools/perf/builtin-inject.c @@ -43,6 +43,14 @@ static int perf_event__repipe(union perf_event *event, return perf_event__repipe_synth(event, session); } +static int perf_event__repipe_sample(union perf_event *event, + struct perf_sample *sample __used, + struct perf_evsel *evsel __used, + struct perf_session *session) +{ + return perf_event__repipe_synth(event, session); +} + static int perf_event__repipe_mmap(union perf_event *event, struct perf_sample *sample, struct perf_session *session) @@ -124,6 +132,7 @@ static int dso__inject_build_id(struct dso *self, struct perf_session *session) static int perf_event__inject_buildid(union perf_event *event, struct perf_sample *sample, + struct perf_evsel *evsel __used, struct perf_session *session) { struct addr_location al; @@ -164,7 +173,7 @@ repipe: } struct perf_event_ops inject_ops = { - .sample = perf_event__repipe, + .sample = perf_event__repipe_sample, .mmap = perf_event__repipe, .comm = perf_event__repipe, .fork = perf_event__repipe, diff --git a/tools/perf/builtin-kmem.c b/tools/perf/builtin-kmem.c index 7f618f4..225e963 100644 --- a/tools/perf/builtin-kmem.c +++ b/tools/perf/builtin-kmem.c @@ -305,6 +305,7 @@ static void process_raw_event(union perf_event *raw_event __used, void *data, static int process_sample_event(union perf_event *event, struct perf_sample *sample, + struct perf_evsel *evsel __used, struct perf_session *session) { struct thread *thread = perf_session__findnew(session, event->ip.pid); diff --git a/tools/perf/builtin-lock.c b/tools/perf/builtin-lock.c index 7a2a79d2..9ac05aa 100644 --- a/tools/perf/builtin-lock.c +++ b/tools/perf/builtin-lock.c @@ -845,7 +845,9 @@ static void dump_info(void) die("Unknown type of information\n"); } -static int process_sample_event(union perf_event *event, struct perf_sample *sample, +static int process_sample_event(union perf_event *event, + struct perf_sample *sample, + struct perf_evsel *evsel __used, struct perf_session *s) { struct thread *thread = perf_session__findnew(s, sample->tid); diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index b1b8200..498c6f7 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -50,12 +50,12 @@ static symbol_filter_t annotate_init; static int perf_session__add_hist_entry(struct perf_session *session, struct addr_location *al, - struct perf_sample *sample) + struct perf_sample *sample, + struct perf_evsel *evsel) { struct symbol *parent = NULL; int err = 0; struct hist_entry *he; - struct perf_evsel *evsel; if ((sort__has_parent || symbol_conf.use_callchain) && sample->callchain) { err = perf_session__resolve_callchain(session, al->thread, @@ -64,18 +64,6 @@ static int perf_session__add_hist_entry(struct perf_session *session, return err; } - evsel = perf_evlist__id2evsel(session->evlist, sample->id); - if (evsel == NULL) { - /* - * FIXME: Propagate this back, but at least we're in a builtin, - * where exit() is allowed. ;-) - */ - ui__warning("Invalid %s file, contains samples with id %" PRIu64 " not in " - "its header!\n", input_name, sample->id); - exit_browser(0); - exit(1); - } - he = __hists__add_entry(&evsel->hists, al, parent, sample->period); if (he == NULL) return -ENOMEM; @@ -113,6 +101,7 @@ out: static int process_sample_event(union perf_event *event, struct perf_sample *sample, + struct perf_evsel *evsel, struct perf_session *session) { struct addr_location al; @@ -127,7 +116,7 @@ static int process_sample_event(union perf_event *event, if (al.filtered || (hide_unresolved && al.sym == NULL)) return 0; - if (perf_session__add_hist_entry(session, &al, sample)) { + if (perf_session__add_hist_entry(session, &al, sample, evsel)) { pr_debug("problem incrementing symbol period, skipping event\n"); return -1; } diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c index a32f411..dcfe887 100644 --- a/tools/perf/builtin-sched.c +++ b/tools/perf/builtin-sched.c @@ -1603,6 +1603,7 @@ static void process_raw_event(union perf_event *raw_event __used, static int process_sample_event(union perf_event *event, struct perf_sample *sample, + struct perf_evsel *evsel __used, struct perf_session *session) { struct thread *thread; diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c index 9f5fc54..ac574ea 100644 --- a/tools/perf/builtin-script.c +++ b/tools/perf/builtin-script.c @@ -162,19 +162,11 @@ static void print_sample_start(struct perf_sample *sample, static void process_event(union perf_event *event __unused, struct perf_sample *sample, + struct perf_evsel *evsel, struct perf_session *session, struct thread *thread) { - struct perf_event_attr *attr; - struct perf_evsel *evsel; - - evsel = perf_evlist__id2evsel(session->evlist, sample->id); - if (evsel == NULL) { - pr_err("Invalid data. Contains samples with id not in " - "its header!\n"); - return; - } - attr = &evsel->attr; + struct perf_event_attr *attr = &evsel->attr; if (output_fields[attr->type] == 0) return; @@ -244,6 +236,7 @@ static char const *input_name = "perf.data"; static int process_sample_event(union perf_event *event, struct perf_sample *sample, + struct perf_evsel *evsel, struct perf_session *session) { struct thread *thread = perf_session__findnew(session, event->ip.pid); @@ -264,7 +257,7 @@ static int process_sample_event(union perf_event *event, last_timestamp = sample->time; return 0; } - scripting_ops->process_event(event, sample, session, thread); + scripting_ops->process_event(event, sample, evsel, session, thread); session->hists.stats.total_period += sample->period; return 0; diff --git a/tools/perf/builtin-timechart.c b/tools/perf/builtin-timechart.c index 67c0459..aa26f4d 100644 --- a/tools/perf/builtin-timechart.c +++ b/tools/perf/builtin-timechart.c @@ -488,6 +488,7 @@ static void sched_switch(int cpu, u64 timestamp, struct trace_entry *te) static int process_sample_event(union perf_event *event __used, struct perf_sample *sample, + struct perf_evsel *evsel __used, struct perf_session *session) { struct trace_entry *te; @@ -506,6 +507,16 @@ static int process_sample_event(union perf_event *event __used, struct power_entry_old *peo; peo = (void *)te; #endif + /* + * FIXME: use evsel, its already mapped from id to perf_evsel, + * remove perf_header__find_event infrastructure bits. + * Mapping all these "power:cpu_idle" strings to the tracepoint + * ID and then just comparing against evsel->attr.config. + * + * e.g.: + * + * if (evsel->attr.config == power_cpu_idle_id) + */ event_str = perf_header__find_event(te->type); if (!event_str) diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index 70f1075..676b4fb 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -515,7 +515,9 @@ static void handle_keypress(struct perf_session *session, int c) break; case 'E': if (top.evlist->nr_entries > 1) { - int counter; + /* Select 0 as the default event: */ + int counter = 0; + fprintf(stderr, "\nAvailable events:"); list_for_each_entry(top.sym_evsel, &top.evlist->entries, node) diff --git a/tools/perf/util/build-id.c b/tools/perf/util/build-id.c index 31f934a..a91cd99 100644 --- a/tools/perf/util/build-id.c +++ b/tools/perf/util/build-id.c @@ -16,6 +16,7 @@ static int build_id__mark_dso_hit(union perf_event *event, struct perf_sample *sample __used, + struct perf_evsel *evsel __used, struct perf_session *session) { struct addr_location al; diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c index e5230c0..93862a8 100644 --- a/tools/perf/util/header.c +++ b/tools/perf/util/header.c @@ -695,13 +695,50 @@ out: return err; } +static int perf_header__read_build_ids_abi_quirk(struct perf_header *header, + int input, u64 offset, u64 size) +{ + struct perf_session *session = container_of(header, struct perf_session, header); + struct { + struct perf_event_header header; + u8 build_id[ALIGN(BUILD_ID_SIZE, sizeof(u64))]; + char filename[0]; + } old_bev; + struct build_id_event bev; + char filename[PATH_MAX]; + u64 limit = offset + size; + + while (offset < limit) { + ssize_t len; + + if (read(input, &old_bev, sizeof(old_bev)) != sizeof(old_bev)) + return -1; + + if (header->needs_swap) + perf_event_header__bswap(&old_bev.header); + + len = old_bev.header.size - sizeof(old_bev); + if (read(input, filename, len) != len) + return -1; + + bev.header = old_bev.header; + bev.pid = 0; + memcpy(bev.build_id, old_bev.build_id, sizeof(bev.build_id)); + __event_process_build_id(&bev, filename, session); + + offset += bev.header.size; + } + + return 0; +} + static int perf_header__read_build_ids(struct perf_header *header, int input, u64 offset, u64 size) { struct perf_session *session = container_of(header, struct perf_session, header); struct build_id_event bev; char filename[PATH_MAX]; - u64 limit = offset + size; + u64 limit = offset + size, orig_offset = offset; int err = -1; while (offset < limit) { @@ -716,6 +753,24 @@ static int perf_header__read_build_ids(struct perf_header *header, len = bev.header.size - sizeof(bev); if (read(input, filename, len) != len) goto out; + /* + * The a1645ce1 changeset: + * + * "perf: 'perf kvm' tool for monitoring guest performance from host" + * + * Added a field to struct build_id_event that broke the file + * format. + * + * Since the kernel build-id is the first entry, process the + * table using the old format if the well known + * '[kernel.kallsyms]' string for the kernel build-id has the + * first 4 characters chopped off (where the pid_t sits). + */ + if (memcmp(filename, "nel.kallsyms]", 13) == 0) { + if (lseek(input, orig_offset, SEEK_SET) == (off_t)-1) + return -1; + return perf_header__read_build_ids_abi_quirk(header, input, offset, size); + } __event_process_build_id(&bev, filename, session); diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h index cb6858a..3beb97c 100644 --- a/tools/perf/util/hist.h +++ b/tools/perf/util/hist.h @@ -29,6 +29,7 @@ struct events_stats { u32 nr_events[PERF_RECORD_HEADER_MAX]; u32 nr_unknown_events; u32 nr_invalid_chains; + u32 nr_unknown_id; }; enum hist_column { diff --git a/tools/perf/util/scripting-engines/trace-event-perl.c b/tools/perf/util/scripting-engines/trace-event-perl.c index 6214272..74350ff 100644 --- a/tools/perf/util/scripting-engines/trace-event-perl.c +++ b/tools/perf/util/scripting-engines/trace-event-perl.c @@ -247,6 +247,7 @@ static inline struct event *find_cache_event(int type) static void perl_process_event(union perf_event *pevent __unused, struct perf_sample *sample, + struct perf_evsel *evsel, struct perf_session *session __unused, struct thread *thread) { diff --git a/tools/perf/util/scripting-engines/trace-event-python.c b/tools/perf/util/scripting-engines/trace-event-python.c index 1b85d60..6ccf70e 100644 --- a/tools/perf/util/scripting-engines/trace-event-python.c +++ b/tools/perf/util/scripting-engines/trace-event-python.c @@ -206,6 +206,7 @@ static inline struct event *find_cache_event(int type) static void python_process_event(union perf_event *pevent __unused, struct perf_sample *sample, + struct perf_evsel *evsel __unused, struct perf_session *session __unused, struct thread *thread) { diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index c68cf40..caa2245 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -280,6 +280,15 @@ static int process_event_synth_stub(union perf_event *event __used, return 0; } +static int process_event_sample_stub(union perf_event *event __used, + struct perf_sample *sample __used, + struct perf_evsel *evsel __used, + struct perf_session *session __used) +{ + dump_printf(": unhandled!\n"); + return 0; +} + static int process_event_stub(union perf_event *event __used, struct perf_sample *sample __used, struct perf_session *session __used) @@ -303,7 +312,7 @@ static int process_finished_round(union perf_event *event, static void perf_event_ops__fill_defaults(struct perf_event_ops *handler) { if (handler->sample == NULL) - handler->sample = process_event_stub; + handler->sample = process_event_sample_stub; if (handler->mmap == NULL) handler->mmap = process_event_stub; if (handler->comm == NULL) @@ -698,12 +707,19 @@ static int perf_session_deliver_event(struct perf_session *session, struct perf_event_ops *ops, u64 file_offset) { + struct perf_evsel *evsel; + dump_event(session, event, file_offset, sample); switch (event->header.type) { case PERF_RECORD_SAMPLE: dump_sample(session, event, sample); - return ops->sample(event, sample, session); + evsel = perf_evlist__id2evsel(session->evlist, sample->id); + if (evsel == NULL) { + ++session->hists.stats.nr_unknown_id; + return -1; + } + return ops->sample(event, sample, evsel, session); case PERF_RECORD_MMAP: return ops->mmap(event, sample, session); case PERF_RECORD_COMM: @@ -845,6 +861,11 @@ static void perf_session__warn_about_errors(const struct perf_session *session, session->hists.stats.nr_unknown_events); } + if (session->hists.stats.nr_unknown_id != 0) { + ui__warning("%u samples with id not present in the header\n", + session->hists.stats.nr_unknown_id); + } + if (session->hists.stats.nr_invalid_chains != 0) { ui__warning("Found invalid callchains!\n\n" "%u out of %u events were discarded for this reason.\n\n" diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h index 0b3c9af..1ac481f 100644 --- a/tools/perf/util/session.h +++ b/tools/perf/util/session.h @@ -55,8 +55,11 @@ struct perf_session { char filename[0]; }; +struct perf_evsel; struct perf_event_ops; +typedef int (*event_sample)(union perf_event *event, struct perf_sample *sample, + struct perf_evsel *evsel, struct perf_session *session); typedef int (*event_op)(union perf_event *self, struct perf_sample *sample, struct perf_session *session); typedef int (*event_synth_op)(union perf_event *self, @@ -65,8 +68,8 @@ typedef int (*event_op2)(union perf_event *self, struct perf_session *session, struct perf_event_ops *ops); struct perf_event_ops { - event_op sample, - mmap, + event_sample sample; + event_op mmap, comm, fork, exit, diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c index 651dbfe..17df793 100644 --- a/tools/perf/util/symbol.c +++ b/tools/perf/util/symbol.c @@ -1486,7 +1486,9 @@ int dso__load(struct dso *self, struct map *map, symbol_filter_t filter) * On the first pass, only load images if they have a full symtab. * Failing that, do a second pass where we accept .dynsym also */ - for (self->symtab_type = SYMTAB__BUILD_ID_CACHE, want_symtab = 1; + want_symtab = 1; +restart: + for (self->symtab_type = SYMTAB__BUILD_ID_CACHE; self->symtab_type != SYMTAB__NOT_FOUND; self->symtab_type++) { switch (self->symtab_type) { @@ -1536,17 +1538,7 @@ int dso__load(struct dso *self, struct map *map, symbol_filter_t filter) snprintf(name, size, "%s%s", symbol_conf.symfs, self->long_name); break; - - default: - /* - * If we wanted a full symtab but no image had one, - * relax our requirements and repeat the search. - */ - if (want_symtab) { - want_symtab = 0; - self->symtab_type = SYMTAB__BUILD_ID_CACHE; - } else - continue; + default:; } /* Name is now the name of the next image to try */ @@ -1573,6 +1565,15 @@ int dso__load(struct dso *self, struct map *map, symbol_filter_t filter) } } + /* + * If we wanted a full symtab but no image had one, + * relax our requirements and repeat the search. + */ + if (ret <= 0 && want_symtab) { + want_symtab = 0; + goto restart; + } + free(name); if (ret < 0 && strstr(self->name, " (deleted)") != NULL) return 0; diff --git a/tools/perf/util/trace-event-scripting.c b/tools/perf/util/trace-event-scripting.c index 66f4b78..c9dcbec 100644 --- a/tools/perf/util/trace-event-scripting.c +++ b/tools/perf/util/trace-event-scripting.c @@ -38,6 +38,7 @@ static int stop_script_unsupported(void) static void process_event_unsupported(union perf_event *event __unused, struct perf_sample *sample __unused, + struct perf_evsel *evsel __unused, struct perf_session *session __unused, struct thread *thread __unused) { diff --git a/tools/perf/util/trace-event.h b/tools/perf/util/trace-event.h index b04da57..f674dda 100644 --- a/tools/perf/util/trace-event.h +++ b/tools/perf/util/trace-event.h @@ -280,6 +280,7 @@ struct scripting_ops { int (*stop_script) (void); void (*process_event) (union perf_event *event, struct perf_sample *sample, + struct perf_evsel *evsel, struct perf_session *session, struct thread *thread); int (*generate_script) (const char *outfile); |
