Mel reported stddev reporting was broken due to following commit: 106a94a0f8c2 perf stat: Introduce read_counters function This commit merged interval and overall counters reading into single read_counters function. The old interval code cleaned the stddev data for some reason (it's never displayed in interval mode) and the mentioned commit kept on cleaning the stddev data in merged function, which resulted in the stddev not being displayed. Removing the wrong stddev data cleanup init_stats call. Reported-by: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx> Tested-by: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx> Cc: stable@xxxxxxxxxxxxxxx # v4.2+ Cc: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx> Link: http://lkml.kernel.org/n/tip-tbcxtpjsqrrbwn2me0je8yxt@xxxxxxxxxxxxxx Signed-off-by: Jiri Olsa <jolsa@xxxxxxxxxx> --- tools/perf/util/stat.c | 1 - 1 file changed, 1 deletion(-) diff --git a/tools/perf/util/stat.c b/tools/perf/util/stat.c index 2f901d15e063..2b58edccd56f 100644 --- a/tools/perf/util/stat.c +++ b/tools/perf/util/stat.c @@ -310,7 +310,6 @@ int perf_stat_process_counter(struct perf_stat_config *config, int i, ret; aggr->val = aggr->ena = aggr->run = 0; - init_stats(ps->res_stats); if (counter->per_pkg) zero_per_pkg(counter); -- 2.4.3 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html