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| author | Namhyung Kim <namhyung@kernel.org> | 2021-04-26 18:37:15 -0700 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2021-04-29 10:30:59 -0300 |
| commit | 2775de0b115a6ffab7882c45c755005ee0ac0122 (patch) | |
| tree | d9d6685f1604c30137ff105cf974551c6af3ec99 /tools/perf/util/hist.c | |
| parent | 55f754443890043956ee81431faa3c529309ba24 (diff) | |
| download | linux-2775de0b115a6ffab7882c45c755005ee0ac0122.tar.gz linux-2775de0b115a6ffab7882c45c755005ee0ac0122.tar.bz2 linux-2775de0b115a6ffab7882c45c755005ee0ac0122.zip | |
perf report: Add --skip-empty option to suppress 0 event stat
To make the output more readable, I think it's better to remove 0's in
the output. Also the dummy event has no event stats so it just wasts
the space. Let's use the --skip-empty option to suppress it.
$ perf report --stat --skip-empty
Aggregated stats:
TOTAL events: 16530
MMAP events: 226
COMM events: 1596
EXIT events: 2
THROTTLE events: 121
UNTHROTTLE events: 117
FORK events: 1595
SAMPLE events: 719
MMAP2 events: 12147
CGROUP events: 2
FINISHED_ROUND events: 2
THREAD_MAP events: 1
CPU_MAP events: 1
TIME_CONV events: 1
cycles stats:
SAMPLE events: 719
Reviewed-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20210427013717.1651674-5-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/hist.c')
| -rw-r--r-- | tools/perf/util/hist.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c index 691a6a777d14..65fe65ba03c2 100644 --- a/tools/perf/util/hist.c +++ b/tools/perf/util/hist.c @@ -2676,7 +2676,8 @@ void hist__account_cycles(struct branch_stack *bs, struct addr_location *al, } } -size_t evlist__fprintf_nr_events(struct evlist *evlist, FILE *fp) +size_t evlist__fprintf_nr_events(struct evlist *evlist, FILE *fp, + bool skip_empty) { struct evsel *pos; size_t ret = 0; @@ -2684,6 +2685,9 @@ size_t evlist__fprintf_nr_events(struct evlist *evlist, FILE *fp) evlist__for_each_entry(evlist, pos) { struct hists *hists = evsel__hists(pos); + if (skip_empty && !hists->stats.nr_samples) + continue; + ret += fprintf(fp, "%s stats:\n", evsel__name(pos)); ret += fprintf(fp, "%16s events: %10d\n", "SAMPLE", hists->stats.nr_samples); |