This is a note to let you know that I've just added the patch titled
perf stat: Reset aggr stats for each run
to the 6.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
perf-stat-reset-aggr-stats-for-each-run.patch
and it can be found in the queue-6.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 604de040e0f4f4218832d65e49af24e33bf5ab68
Author: Namhyung Kim <namhyung@xxxxxxxxxx>
Date: Fri Jun 16 00:32:10 2023 -0700
perf stat: Reset aggr stats for each run
[ Upstream commit ed4090a22c123b9b33368741253edddc6ff8d18f ]
When it runs multiple times with -r option, it missed to reset the
aggregation counters and the values were added up. The aggregation
count has the values to be printed in the end. It should reset the
counters at the beginning of each run. But the current code does that
only when -I/--interval-print option is given.
Fixes: 91f85f98da7ab8c3 ("perf stat: Display event stats using aggr counts")
Reported-by: Jiri Olsa <jolsa@xxxxxxxxxx>
Signed-off-by: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: Andi Kleen <ak@xxxxxxxxxxxxxxx>
Cc: Ian Rogers <irogers@xxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Kan Liang <kan.liang@xxxxxxxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20230616073211.1057936-1-namhyung@xxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index b9ad32f21e575..463643cda0d5f 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -723,6 +723,8 @@ static int __run_perf_stat(int argc, const char **argv, int run_idx)
all_counters_use_bpf = false;
}
+ evlist__reset_aggr_stats(evsel_list);
+
evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) {
counter = evlist_cpu_itr.evsel;
