perf report: Add --stats option to display quick data statistics
authorJiri Olsa <jolsa@kernel.org>
Sun, 7 Jan 2018 16:03:55 +0000 (17:03 +0100)
committerArnaldo Carvalho de Melo <acme@redhat.com>
Wed, 10 Jan 2018 15:00:56 +0000 (12:00 -0300)
commita4a4d0a7a2b20f7880262de4f51685baaf693476
treebf6c28dcefaa93d1a4180a9aa69497a047a1b0d6
parent075ca1ebb25e798e4072a1e3a482b829bb51afb2
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>
tools/perf/Documentation/perf-report.txt
tools/perf/builtin-report.c