Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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
71void perf_stat__reset_shadow_stats(void);
72void perf_stat__update_shadow_stats(struct perf_evsel *counter, u64 *count,
73 int cpu);
74void perf_stat__print_shadow_stats(FILE *out, struct perf_evsel *evsel,
75 double avg, int cpu, enum aggr_mode aggr);
76
77void perf_evsel__reset_stat_priv(struct perf_evsel *evsel);
78int perf_evsel__alloc_stat_priv(struct perf_evsel *evsel);
79void perf_evsel__free_stat_priv(struct perf_evsel *evsel);
80
81int perf_evsel__alloc_prev_raw_counts(struct perf_evsel *evsel,
82 int ncpus, int nthreads);
83void perf_evsel__free_prev_raw_counts(struct perf_evsel *evsel);
84
85int perf_evsel__alloc_stats(struct perf_evsel *evsel, bool alloc_raw);
86
87int perf_evlist__alloc_stats(struct perf_evlist *evlist, bool alloc_raw);
88void perf_evlist__free_stats(struct perf_evlist *evlist);
89void perf_evlist__reset_stats(struct perf_evlist *evlist);
90
91int perf_stat_process_counter(struct perf_stat_config *config,
92 struct perf_evsel *counter);
93struct perf_tool;
94union perf_event;
95struct perf_session;
96int perf_event__process_stat_event(struct perf_tool *tool,
97 union perf_event *event,
98 struct perf_session *session);
99
100size_t perf_event__fprintf_stat(union perf_event *event, FILE *fp);
101size_t perf_event__fprintf_stat_round(union perf_event *event, FILE *fp);
102size_t perf_event__fprintf_stat_config(union perf_event *event, FILE *fp);
103#endif