From: Jin Yao <yao....@linux.intel.com>
commit 0e0bf1ea1147fcf74eab19c2d3c853cc3740a72f upstream.
As the code comments in perf_stat_process_counter() say, 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.
But the current code only zeros the res_stats[0], it doesn't zero the
res_stats[1] and res_stats[2], which are for ena and run of counter.
This patch zeros the whole res_stats[] for interval mode.
Fixes: 51fd2df1e882 ("perf stat: Fix interval output values")
Signed-off-by: Jin Yao <yao....@linux.intel.com>
Cc: Alexander Shishkin <alexander.shish...@linux.intel.com>
Cc: Andi Kleen <a...@linux.intel.com>
Cc: Jin Yao <yao....@intel.com>
Cc: Jiri Olsa <jo...@kernel.org>
Cc: Kan Liang <kan.li...@linux.intel.com>
Cc: Peter Zijlstra <pet...@infradead.org>
Link: http://lore.kernel.org/lkml/20200409070755.17261-1-yao....@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
tools/perf/util/stat.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
--- a/tools/perf/util/stat.c
+++ b/tools/perf/util/stat.c
@@ -318,8 +318,10 @@ int perf_stat_process_counter(struct per
* interval mode, otherwise overall avg running
* averages will be shown for each interval.
*/
- if (config->interval)
- init_stats(ps->res_stats);
+ if (config->interval) {
+ for (i = 0; i < 3; i++)
+ init_stats(&ps->res_stats[i]);
+ }
if (counter->per_pkg)
zero_per_pkg(counter);
