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authorIan Rogers <irogers@google.com>2022-01-15 09:28:52 +0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2022-01-15 23:07:05 +0300
commitd3e2bb4359f70c8b1d09a6f8e2f57240aab0da3f (patch)
treeeec8f94f1965b28da44b6c40ab0a32c6af610686 /tools/perf
parenta6e62743621ea29bea461774c0bcc68e5de59068 (diff)
downloadlinux-d3e2bb4359f70c8b1d09a6f8e2f57240aab0da3f.tar.xz
perf metric: Fix metric_leader
Multiple events may have a metric_leader to aggregate into. This happens for uncore events where, for example, uncore_imc is expanded into uncore_imc_0, uncore_imc_1, etc. Such events all have the same metric_id and should aggregate into the first event. The change introducing metric_ids had a bug where the metric_id was compared to itself, creating an always true condition. Correct this by comparing the event in the metric_evlist and the metric_leader. Fixes: ec5c5b3d2c21b3f3 ("perf metric: Encode and use metric-id as qualifier") Signed-off-by: Ian Rogers <irogers@google.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: John Garry <john.garry@huawei.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lore.kernel.org/lkml/20220115062852.1959424-1-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf')
-rw-r--r--tools/perf/util/metricgroup.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/perf/util/metricgroup.c b/tools/perf/util/metricgroup.c
index 8826c555f780..d8492e339521 100644
--- a/tools/perf/util/metricgroup.c
+++ b/tools/perf/util/metricgroup.c
@@ -314,7 +314,7 @@ static int setup_metric_events(struct hashmap *ids,
*/
metric_id = evsel__metric_id(ev);
evlist__for_each_entry_continue(metric_evlist, ev) {
- if (!strcmp(evsel__metric_id(metric_events[i]), metric_id))
+ if (!strcmp(evsel__metric_id(ev), metric_id))
ev->metric_leader = metric_events[i];
}
}