1#ifndef __PERF_STATS_H
  2#define __PERF_STATS_H
  3
  4#include <linux/types.h>
  5#include <stdio.h>
  6#include "xyarray.h"
  7
  8struct stats
  9{
 10	double n, mean, M2;
 11	u64 max, min;
 12};
 13
 14enum perf_stat_evsel_id {
 15	PERF_STAT_EVSEL_ID__NONE = 0,
 16	PERF_STAT_EVSEL_ID__CYCLES_IN_TX,
 17	PERF_STAT_EVSEL_ID__TRANSACTION_START,
 18	PERF_STAT_EVSEL_ID__ELISION_START,
 19	PERF_STAT_EVSEL_ID__CYCLES_IN_TX_CP,
 20	PERF_STAT_EVSEL_ID__MAX,
 21};
 22
 23struct perf_stat_evsel {
 24	struct stats		res_stats[3];
 25	enum perf_stat_evsel_id	id;
 26};
 27
 28enum aggr_mode {
 29	AGGR_NONE,
 30	AGGR_GLOBAL,
 31	AGGR_SOCKET,
 32	AGGR_CORE,
 33	AGGR_THREAD,
 34	AGGR_UNSET,
 35};
 36
 37struct perf_stat_config {
 38	enum aggr_mode	aggr_mode;
 39	bool		scale;
 40	FILE		*output;
 41	unsigned int	interval;
 42};
 43
 44void update_stats(struct stats *stats, u64 val);
 45double avg_stats(struct stats *stats);
 46double stddev_stats(struct stats *stats);
 47double rel_stddev_stats(double stddev, double avg);
 48
 49static inline void init_stats(struct stats *stats)
 50{
 51	stats->n    = 0.0;
 52	stats->mean = 0.0;
 53	stats->M2   = 0.0;
 54	stats->min  = (u64) -1;
 55	stats->max  = 0;
 56}
 57
 58struct perf_evsel;
 59struct perf_evlist;
 60
 61bool __perf_evsel_stat__is(struct perf_evsel *evsel,
 62			   enum perf_stat_evsel_id id);
 63
 64#define perf_stat_evsel__is(evsel, id) \
 65	__perf_evsel_stat__is(evsel, PERF_STAT_EVSEL_ID__ ## id)
 66
 67void perf_stat_evsel_id_init(struct perf_evsel *evsel);
 68
 69extern struct stats walltime_nsecs_stats;
 70
 71typedef void (*print_metric_t)(void *ctx, const char *color, const char *unit,
 72			       const char *fmt, double val);
 73typedef void (*new_line_t )(void *ctx);
 74
 75void perf_stat__init_shadow_stats(void);
 76void perf_stat__reset_shadow_stats(void);
 77void perf_stat__update_shadow_stats(struct perf_evsel *counter, u64 *count,
 78				    int cpu);
 79struct perf_stat_output_ctx {
 80	void *ctx;
 81	print_metric_t print_metric;
 82	new_line_t new_line;
 83};
 84
 85void perf_stat__print_shadow_stats(struct perf_evsel *evsel,
 86				   double avg, int cpu,
 87				   struct perf_stat_output_ctx *out);
 88
 89int perf_evlist__alloc_stats(struct perf_evlist *evlist, bool alloc_raw);
 90void perf_evlist__free_stats(struct perf_evlist *evlist);
 91void perf_evlist__reset_stats(struct perf_evlist *evlist);
 92
 93int perf_stat_process_counter(struct perf_stat_config *config,
 94			      struct perf_evsel *counter);
 95struct perf_tool;
 96union perf_event;
 97struct perf_session;
 98int perf_event__process_stat_event(struct perf_tool *tool,
 99				   union perf_event *event,
100				   struct perf_session *session);
101
102size_t perf_event__fprintf_stat(union perf_event *event, FILE *fp);
103size_t perf_event__fprintf_stat_round(union perf_event *event, FILE *fp);
104size_t perf_event__fprintf_stat_config(union perf_event *event, FILE *fp);
105#endif