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| author | David Ahern <dsahern@gmail.com> | 2013-08-03 00:05:40 +0400 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2013-08-08 00:35:26 +0400 |
| commit | ffe4f3c0d109dc53e1b3448ac457052107f34a84 (patch) | |
| tree | 18ada0ac819b95198a16764fa8eea7e082a09a44 /tools/perf/util/stat.c | |
| parent | 42ee8c61cb1b7fe7b7ad5071bfb3c609cb0620ca (diff) | |
| download | linux-ffe4f3c0d109dc53e1b3448ac457052107f34a84.tar.xz | |
perf stats: Add max and min stats
Need an initialization function to set min to -1 to
differentiate from an actual min of 0.
Signed-off-by: David Ahern <dsahern@gmail.com>
Reviewed-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Runzhen Wang <runzhen@linux.vnet.ibm.com>
Cc: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Link: http://lkml.kernel.org/r/1375473947-64285-3-git-send-email-dsahern@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/stat.c')
| -rw-r--r-- | tools/perf/util/stat.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/tools/perf/util/stat.c b/tools/perf/util/stat.c index 7c59c28afcc5..6506b3dfb605 100644 --- a/tools/perf/util/stat.c +++ b/tools/perf/util/stat.c @@ -10,6 +10,12 @@ void update_stats(struct stats *stats, u64 val) delta = val - stats->mean; stats->mean += delta / stats->n; stats->M2 += delta*(val - stats->mean); + + if (val > stats->max) + stats->max = val; + + if (val < stats->min) + stats->min = val; } double avg_stats(struct stats *stats) |