diff options
| author | Andi Kleen <ak@linux.intel.com> | 2017-03-20 13:17:01 -0700 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2017-03-21 16:07:00 -0300 |
| commit | b4229e9d4cac2295f8f04ec26acd571a391c6c37 (patch) | |
| tree | 45eb3027e03c82927b7412163084db6d07d7d4c9 /tools/perf/builtin-stat.c | |
| parent | 430daf2dc7aff16096a137347e6fd03d4af609e9 (diff) | |
| download | talos-op-linux-b4229e9d4cac2295f8f04ec26acd571a391c6c37.tar.gz talos-op-linux-b4229e9d4cac2295f8f04ec26acd571a391c6c37.zip | |
perf stat: Handle partially bad results with merging
When any result that is being merged is bad, mark them all bad to give
consistent output in interval mode.
No before/after, because the issue was only found in theoretical review
and it is hard to reproduce
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/20170320201711.14142-4-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/builtin-stat.c')
| -rw-r--r-- | tools/perf/builtin-stat.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c index a4da10a506dd..cd7dc3b648ca 100644 --- a/tools/perf/builtin-stat.c +++ b/tools/perf/builtin-stat.c @@ -1237,6 +1237,16 @@ static void aggr_cb(struct perf_evsel *counter, void *data, bool first) if (first) ad->nr++; counts = perf_counts(counter->counts, cpu, 0); + /* + * When any result is bad, make them all to give + * consistent output in interval mode. + */ + if (counts->ena == 0 || counts->run == 0 || + counter->counts->scaled == -1) { + ad->ena = 0; + ad->run = 0; + break; + } ad->val += counts->val; ad->ena += counts->ena; ad->run += counts->run; |
