Merge tag 'perf-urgent-for-mingo-2' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent

Pull perf/urgent fix from Arnaldo Carvalho de Melo:

  - Fix 'perf stat' interval output values (Jiri Olsa)

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 10 insertions, 0 deletions

diff --git a/tools/perf/util/stat.c b/tools/perf/util/stat.c
index 2b58edccd56f..afb0c45eba34 100644
--- a/tools/perf/util/stat.c
+++ b/tools/perf/util/stat.c
@@ -311,6 +311,16 @@ int perf_stat_process_counter(struct perf_stat_config *config,
 
         aggr->val = aggr->ena = aggr->run = 0;
 
+        /*
+         * We calculate counter's data every interval,
+         * and the display code shows ps->res_stats
+         * avg value. We need to zero the stats for
+         * interval mode, otherwise overall avg running
+         * averages will be shown for each interval.
+         */
+        if (config->interval)
+                init_stats(ps->res_stats);
+
         if (counter->per_pkg)
                 zero_per_pkg(counter);