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| author |   Ian Rogers <irogers@google.com> | 2022-10-03 19:15:53 -0700 |
|---|---|---|
| committer |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2022-10-06 08:03:52 -0300 |
| commit | 8cff7490fc05333f163c0130ec6c64e7a433a4a0 (patch) | |
| tree | 8d0f3fdb5d201cb6c687f4c154b0fe0f3880d6f8 /tools/perf/util | |
| parent | perf expr: Remove jevents case workaround (diff) | |
| download | linux-dev-8cff7490fc05333f163c0130ec6c64e7a433a4a0.tar.xz linux-dev-8cff7490fc05333f163c0130ec6c64e7a433a4a0.zip | |
perf metrics: Don't scale counts going into metrics
Counts are scaled prior to going into saved_value, reverse the scaling
so that metrics don't double scale values.
Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Ahmad Yasin <ahmad.yasin@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Caleb Biggers <caleb.biggers@intel.com>
Cc: Florian Fischer <florian.fischer@muhq.space>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.garry@huawei.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Kshipra Bopardikar <kshipra.bopardikar@intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Miaoqian Lin <linmq006@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Perry Taylor <perry.taylor@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Samantha Alt <samantha.alt@intel.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Link: https://lore.kernel.org/r/20221004021612.325521-5-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util')
| -rw-r--r-- | tools/perf/util/stat-shadow.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/tools/perf/util/stat-shadow.c b/tools/perf/util/stat-shadow.c index 9e1eddeff21b..b5cedd37588f 100644 --- a/tools/perf/util/stat-shadow.c +++ b/tools/perf/util/stat-shadow.c @@ -865,11 +865,16 @@ static int prepare_metric(struct evsel **metric_events, if (!v) break; stats = &v->stats; - scale = 1.0; + /* + * If an event was scaled during stat gathering, reverse + * the scale before computing the metric. + */ + scale = 1.0 / metric_events[i]->scale; + source_count = evsel__source_count(metric_events[i]); if (v->metric_other) - metric_total = v->metric_total; + metric_total = v->metric_total * scale; } n = strdup(evsel__metric_id(metric_events[i])); if (!n) |