From d3e2bb4359f70c8b1d09a6f8e2f57240aab0da3f Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Fri, 14 Jan 2022 22:28:52 -0800 Subject: 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 Cc: Alexander Shishkin Cc: Andi Kleen Cc: Jiri Olsa Cc: John Garry Cc: Mark Rutland Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lore.kernel.org/lkml/20220115062852.1959424-1-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/metricgroup.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') 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]; } } -- cgit v1.2.3