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perf stat: Zero all the 'ena' and 'run' array slot stats for interval mode
commit0e0bf1ea11
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:51fd2df1e8
("perf stat: Fix interval output values") Signed-off-by: Jin Yao <yao.jin@linux.intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jin Yao <yao.jin@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20200409070755.17261-1-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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1 changed files with 4 additions and 2 deletions
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@ -358,8 +358,10 @@ int perf_stat_process_counter(struct perf_stat_config *config,
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* interval mode, otherwise overall avg running
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* averages will be shown for each interval.
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*/
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if (config->interval)
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init_stats(ps->res_stats);
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if (config->interval) {
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for (i = 0; i < 3; i++)
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init_stats(&ps->res_stats[i]);
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}
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if (counter->per_pkg)
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zero_per_pkg(counter);
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