original_kernel/tools/perf/util/stat.h

17 lines
297 B
C

#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