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author | Jiri Olsa <jolsa@kernel.org> | 2018-01-07 17:03:55 +0100 |
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committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2018-01-10 12:00:56 -0300 |
commit | a4a4d0a7a2b20f7880262de4f51685baaf693476 (patch) | |
tree | bf6c28dcefaa93d1a4180a9aa69497a047a1b0d6 /tools/perf/builtin-report.c | |
parent | 075ca1ebb25e798e4072a1e3a482b829bb51afb2 (diff) | |
download | op-kernel-dev-a4a4d0a7a2b20f7880262de4f51685baaf693476.zip op-kernel-dev-a4a4d0a7a2b20f7880262de4f51685baaf693476.tar.gz |
perf report: Add --stats option to display quick data statistics
Add --stats option to display quick data statistics of event numbers,
without any further processing, like the one at the end of the perf
report -D command.
$ perf report --stat
Aggregated stats:
TOTAL events: 4566
MMAP events: 113
LOST events: 19
COMM events: 3
FORK events: 400
SAMPLE events: 3315
MMAP2 events: 32
FINISHED_ROUND events: 681
THREAD_MAP events: 1
CPU_MAP events: 1
TIME_CONV events: 1
I found this useful when hunting lost events for another change.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20180107160356.28203-12-jolsa@kernel.org
[ Rename it to --stats, plural ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/builtin-report.c')
-rw-r--r-- | tools/perf/builtin-report.c | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index 770bf8a..8e67a8c 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -62,6 +62,7 @@ struct report { bool show_threads; bool inverted_callchain; bool mem_mode; + bool stats_mode; bool header; bool header_only; bool nonany_branch_mode; @@ -588,6 +589,20 @@ static void report__output_resort(struct report *rep) ui_progress__finish(); } +static void stats_setup(struct report *rep) +{ + memset(&rep->tool, 0, sizeof(rep->tool)); + rep->tool.no_warn = true; +} + +static int stats_print(struct report *rep) +{ + struct perf_session *session = rep->session; + + perf_session__fprintf_nr_events(session, stdout); + return 0; +} + static int __cmd_report(struct report *rep) { int ret; @@ -619,12 +634,18 @@ static int __cmd_report(struct report *rep) return ret; } + if (rep->stats_mode) + stats_setup(rep); + ret = perf_session__process_events(session); if (ret) { ui__error("failed to process sample\n"); return ret; } + if (rep->stats_mode) + return stats_print(rep); + report__warn_kptr_restrict(rep); evlist__for_each_entry(session->evlist, pos) @@ -781,6 +802,7 @@ int cmd_report(int argc, const char **argv) OPT_BOOLEAN('q', "quiet", &quiet, "Do not show any message"), OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, "dump raw trace in ASCII"), + OPT_BOOLEAN(0, "stats", &report.stats_mode, "Display event stats"), OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name, "file", "vmlinux pathname"), OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name, @@ -1042,6 +1064,8 @@ repeat: report.tool.show_feat_hdr = SHOW_FEAT_HEADER; if (report.show_full_info) report.tool.show_feat_hdr = SHOW_FEAT_HEADER_FULL_INFO; + if (report.stats_mode) + use_browser = 0; if (strcmp(input_name, "-") != 0) setup_browser(true); @@ -1064,7 +1088,7 @@ repeat: ret = 0; goto error; } - } else if (use_browser == 0 && !quiet) { + } else if (use_browser == 0 && !quiet && !report.stats_mode) { fputs("# To display the perf.data header info, please use --header/--header-only options.\n#\n", stdout); } |