linux/tools/perf/util/stat.h
Borislav Petkov d944c4eebc tools: Consolidate types.h
Combine all definitions into a common tools/include/linux/types.h and
kill the wild growth elsewhere. Move DECLARE_BITMAP to its proper
bitmap.h header.

Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Link: http://lkml.kernel.org/n/tip-azczs7qcv6h9xek9od10hiv2@git.kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
2014-05-01 21:22:39 +02:00

26 lines
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C

#ifndef __PERF_STATS_H
#define __PERF_STATS_H
#include <linux/types.h>
struct stats
{
double n, mean, M2;
u64 max, min;
};
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);
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