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__TOPDOWN_TOTAL_SLOTS,
21 PERF_STAT_EVSEL_ID__TOPDOWN_SLOTS_ISSUED,
22 PERF_STAT_EVSEL_ID__TOPDOWN_SLOTS_RETIRED,
23 PERF_STAT_EVSEL_ID__TOPDOWN_FETCH_BUBBLES,
24 PERF_STAT_EVSEL_ID__TOPDOWN_RECOVERY_BUBBLES,
25 PERF_STAT_EVSEL_ID__MAX,
26};
27
28struct perf_stat_evsel {
29 struct stats res_stats[3];
30 enum perf_stat_evsel_id id;
31};
32
33enum aggr_mode {
34 AGGR_NONE,
35 AGGR_GLOBAL,
36 AGGR_SOCKET,
37 AGGR_CORE,
38 AGGR_THREAD,
39 AGGR_UNSET,
40};
41
42struct perf_stat_config {
43 enum aggr_mode aggr_mode;
44 bool scale;
45 FILE *output;
46 unsigned int interval;
47};
48
49void update_stats(struct stats *stats, u64 val);
50double avg_stats(struct stats *stats);
51double stddev_stats(struct stats *stats);
52double rel_stddev_stats(double stddev, double avg);
53
54static inline void init_stats(struct stats *stats)
55{
56 stats->n = 0.0;
57 stats->mean = 0.0;
58 stats->M2 = 0.0;
59 stats->min = (u64) -1;
60 stats->max = 0;
61}
62
63struct perf_evsel;
64struct perf_evlist;
65
66bool __perf_evsel_stat__is(struct perf_evsel *evsel,
67 enum perf_stat_evsel_id id);
68
69#define perf_stat_evsel__is(evsel, id) \
70 __perf_evsel_stat__is(evsel, PERF_STAT_EVSEL_ID__ ## id)
71
72void perf_stat_evsel_id_init(struct perf_evsel *evsel);
73
74extern struct stats walltime_nsecs_stats;
75
76typedef void (*print_metric_t)(void *ctx, const char *color, const char *unit,
77 const char *fmt, double val);
78typedef void (*new_line_t )(void *ctx);
79
80void perf_stat__init_shadow_stats(void);
81void perf_stat__reset_shadow_stats(void);
82void perf_stat__update_shadow_stats(struct perf_evsel *counter, u64 *count,
83 int cpu);
84struct perf_stat_output_ctx {
85 void *ctx;
86 print_metric_t print_metric;
87 new_line_t new_line;
88};
89
90void perf_stat__print_shadow_stats(struct perf_evsel *evsel,
91 double avg, int cpu,
92 struct perf_stat_output_ctx *out);
93
94int perf_evlist__alloc_stats(struct perf_evlist *evlist, bool alloc_raw);
95void perf_evlist__free_stats(struct perf_evlist *evlist);
96void perf_evlist__reset_stats(struct perf_evlist *evlist);
97
98int perf_stat_process_counter(struct perf_stat_config *config,
99 struct perf_evsel *counter);
100struct perf_tool;
101union perf_event;
102struct perf_session;
103int perf_event__process_stat_event(struct perf_tool *tool,
104 union perf_event *event,
105 struct perf_session *session);
106
107size_t perf_event__fprintf_stat(union perf_event *event, FILE *fp);
108size_t perf_event__fprintf_stat_round(union perf_event *event, FILE *fp);
109size_t perf_event__fprintf_stat_config(union perf_event *event, FILE *fp);
110#endif