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Subject[tip:perf/core] perf stat: Update walltime_nsecs_stats in interval mode
Commit-ID:  b90f1333ef08d2a497ae239798868b046f4e3a97
Gitweb: http://git.kernel.org/tip/b90f1333ef08d2a497ae239798868b046f4e3a97
Author: Andi Kleen <ak@linux.intel.com>
AuthorDate: Thu, 31 Aug 2017 12:40:36 -0700
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Wed, 13 Sep 2017 09:49:14 -0300

perf stat: Update walltime_nsecs_stats in interval mode

Some metrics (like GFLOPs) need walltime_nsecs_stats for each interval.
Compute it for each interval instead of only at the end.

Pointed out by Jiri.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/20170831194036.30146-12-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/builtin-stat.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index 855890e..88f1d5f 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -415,6 +415,8 @@ static void process_interval(void)
pr_err("failed to write stat round event\n");
}

+ init_stats(&walltime_nsecs_stats);
+ update_stats(&walltime_nsecs_stats, stat_config.interval * 1000000);
print_counters(&rs, 0, NULL);
}

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