diff options
| author | Ingo Molnar <mingo@kernel.org> | 2012-09-19 16:59:01 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2012-09-19 16:59:01 +0200 |
| commit | bea8f35421628266658c14ea990d18b0969c4c0b (patch) | |
| tree | 46c5d4616a003011a1237ed8d31592a662cf9720 /tools/perf/util/stat.h | |
| parent | 26f45274afd938d82463816a12ec67448513294a (diff) | |
| parent | 7ae92e744e3fb389afb1e24920ecda331d360c61 (diff) | |
Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core
Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:
* Fix handling of unresolved samples when --symbols is used in 'report',
from Feng Tang.
* Add --symbols to 'script', similar to the one in 'report', from Feng Tang.
* Add union member access support to 'probe', from Hyeoncheol Lee.
* Make 'archive' work on Android, tweaking some of the utility parameters
used (tar, rm), from Irina Tirdea.
* Fixups to die() removal, from Namhyung Kim.
* Render fixes for the TUI, from Namhyung Kim.
* Don't enable annotation in non symbolic view, from Namhyung Kim.
* Fix pipe mode in 'report', from Namhyung Kim.
* Move related stats code from stat to util/, will be used by the 'stat'
kvm tool, from Xiao Guangrong.
* Add cpumask for uncore pmu, use it in 'stat', from Yan, Zheng.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'tools/perf/util/stat.h')
| -rw-r--r-- | tools/perf/util/stat.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/tools/perf/util/stat.h b/tools/perf/util/stat.h new file mode 100644 index 00000000000..588367c3c76 --- /dev/null +++ b/tools/perf/util/stat.h @@ -0,0 +1,16 @@ +#ifndef __PERF_STATS_H +#define __PERF_STATS_H + +#include "types.h" + +struct stats +{ + double n, mean, M2; +}; + +void update_stats(struct stats *stats, u64 val); +double avg_stats(struct stats *stats); +double stddev_stats(struct stats *stats); +double rel_stddev_stats(double stddev, double avg); + +#endif |