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| author | David Ahern | 2013-08-02 22:05:40 +0200 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo | 2013-08-07 22:35:26 +0200 |
| commit | ffe4f3c0d109dc53e1b3448ac457052107f34a84 (patch) | |
| tree | 18ada0ac819b95198a16764fa8eea7e082a09a44 /tools/perf/util/stat.h | |
| parent | perf top: move CONSOLE_CLEAR to header file (diff) | |
| download | kernel-qcow2-linux-ffe4f3c0d109dc53e1b3448ac457052107f34a84.tar.gz kernel-qcow2-linux-ffe4f3c0d109dc53e1b3448ac457052107f34a84.tar.xz kernel-qcow2-linux-ffe4f3c0d109dc53e1b3448ac457052107f34a84.zip | |
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.h')
| -rw-r--r-- | tools/perf/util/stat.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/tools/perf/util/stat.h b/tools/perf/util/stat.h index 588367c3c767..ae8ccd7227cf 100644 --- a/tools/perf/util/stat.h +++ b/tools/perf/util/stat.h @@ -6,6 +6,7 @@ struct stats { double n, mean, M2; + u64 max, min; }; void update_stats(struct stats *stats, u64 val); @@ -13,4 +14,12 @@ double avg_stats(struct stats *stats); double stddev_stats(struct stats *stats); double rel_stddev_stats(double stddev, double avg); +static inline void init_stats(struct stats *stats) +{ + stats->n = 0.0; + stats->mean = 0.0; + stats->M2 = 0.0; + stats->min = (u64) -1; + stats->max = 0; +} #endif |