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
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