summaryrefslogtreecommitdiffstats
path: root/tools/perf/util/stat.h
blob: e35e188237c81dbe75ddaed86f560c8aed6ca11b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __PERF_STATS_H
#define __PERF_STATS_H

#include <linux/types.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/resource.h>
#include "cpumap.h"
#include "rblist.h"
#include "counts.h"

struct perf_cpu_map;
struct perf_stat_config;
struct timespec;

struct stats {
	double n, mean, M2;
	u64 max, min;
};

/* hold aggregated event info */
struct perf_stat_aggr {
	/* aggregated values */
	struct perf_counts_values	counts;
	/* number of entries (CPUs) aggregated */
	int				nr;
	/* whether any entry has failed to read/process event */
	bool				failed;
	/* to mark this data is processed already */
	bool				used;
};

/* per-evsel event stats */
struct perf_stat_evsel {
	/* used for repeated runs */
	struct stats		 res_stats;
	/* number of allocated 'aggr' */
	int			 nr_aggr;
	/* aggregated event values */
	struct perf_stat_aggr	*aggr;
	/* used for group read */
	u64			*group_data;
};

enum aggr_mode {
	AGGR_NONE,
	AGGR_GLOBAL,
	AGGR_SOCKET,
	AGGR_DIE,
	AGGR_CORE,
	AGGR_THREAD,
	AGGR_UNSET,
	AGGR_NODE,
	AGGR_MAX
};

struct rusage_stats {
	struct stats ru_utime_usec_stat;
	struct stats ru_stime_usec_stat;
};

typedef struct aggr_cpu_id (*aggr_get_id_t)(struct perf_stat_config *config, struct perf_cpu cpu);

struct perf_stat_config {
	enum aggr_mode		 aggr_mode;
	bool			 scale;
	bool			 no_inherit;
	bool			 identifier;
	bool			 csv_output;
	bool			 json_output;
	bool			 interval_clear;
	bool			 metric_only;
	bool			 null_run;
	bool			 ru_display;
	bool			 big_num;
	bool			 no_merge;
	bool			 hybrid_merge;
	bool			 walltime_run_table;
	bool			 all_kernel;
	bool			 all_user;
	bool			 percore_show_thread;
	bool			 summary;
	bool			 no_csv_summary;
	bool			 metric_no_group;
	bool			 metric_no_merge;
	bool			 metric_no_threshold;
	bool			 stop_read_counter;
	bool			 iostat_run;
	char			 *user_requested_cpu_list;
	bool			 system_wide;
	FILE			*output;
	unsigned int		 interval;
	unsigned int		 timeout;
	unsigned int		 unit_width;
	unsigned int		 metric_only_len;
	int			 times;
	int			 run_count;
	int			 print_free_counters_hint;
	int			 print_mixed_hw_group_error;
	const char		*csv_sep;
	struct stats		*walltime_nsecs_stats;
	struct rusage		 ru_data;
	struct rusage_stats		 *ru_stats;
	struct cpu_aggr_map	*aggr_map;
	aggr_get_id_t		 aggr_get_id;
	struct cpu_aggr_map	*cpus_aggr_map;
	u64			*walltime_run;
	struct rblist		 metric_events;
	int			 ctl_fd;
	int			 ctl_fd_ack;
	bool			 ctl_fd_close;
	const char		*cgroup_list;
	unsigned int		topdown_level;
};

void perf_stat__set_big_num(int set);
void perf_stat__set_no_csv_summary(int set);

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);

static inline void init_stats(struct stats *stats)
{
	stats->n    = 0.0;
	stats->mean = 0.0;
	stats->M2   = 0.0;
	stats->min  = (u64) -1;
	stats->max  = 0;
}

static inline void init_rusage_stats(struct rusage_stats *ru_stats) {
	init_stats(&ru_stats->ru_utime_usec_stat);
	init_stats(&ru_stats->ru_stime_usec_stat);
}

static inline void update_rusage_stats(struct rusage_stats *ru_stats, struct rusage* rusage) {
	const u64 us_to_ns = 1000;
	const u64 s_to_ns = 1000000000;
	update_stats(&ru_stats->ru_utime_usec_stat,
	             (rusage->ru_utime.tv_usec * us_to_ns + rusage->ru_utime.tv_sec * s_to_ns));
	update_stats(&ru_stats->ru_stime_usec_stat,
	             (rusage->ru_stime.tv_usec * us_to_ns + rusage->ru_stime.tv_sec * s_to_ns));
}

struct evsel;
struct evlist;

extern struct stats walltime_nsecs_stats;
extern struct rusage_stats ru_stats;

typedef void (*print_metric_t)(struct perf_stat_config *config,
			       void *ctx, const char *color, const char *unit,
			       const char *fmt, double val);
typedef void (*new_line_t)(struct perf_stat_config *config, void *ctx);

void perf_stat__reset_shadow_stats(void);
struct perf_stat_output_ctx {
	void *ctx;
	print_metric_t print_metric;
	new_line_t new_line;
	bool force_header;
};

void perf_stat__print_shadow_stats(struct perf_stat_config *config,
				   struct evsel *evsel,
				   double avg, int aggr_idx,
				   struct perf_stat_output_ctx *out,
				   struct rblist *metric_events);

int evlist__alloc_stats(struct perf_stat_config *config,
			struct evlist *evlist, bool alloc_raw);
void evlist__free_stats(struct evlist *evlist);
void evlist__reset_stats(struct evlist *evlist);
void evlist__reset_prev_raw_counts(struct evlist *evlist);
void evlist__copy_prev_raw_counts(struct evlist *evlist);
void evlist__save_aggr_prev_raw_counts(struct evlist *evlist);

int evlist__alloc_aggr_stats(struct evlist *evlist, int nr_aggr);
void evlist__reset_aggr_stats(struct evlist *evlist);

int perf_stat_process_counter(struct perf_stat_config *config,
			      struct evsel *counter);
void perf_stat_merge_counters(struct perf_stat_config *config, struct evlist *evlist);
void perf_stat_process_percore(struct perf_stat_config *config, struct evlist *evlist);

struct perf_tool;
union perf_event;
struct perf_session;
struct target;

int perf_event__process_stat_event(struct perf_session *session,
				   union perf_event *event);

size_t perf_event__fprintf_stat(union perf_event *event, FILE *fp);
size_t perf_event__fprintf_stat_round(union perf_event *event, FILE *fp);
size_t perf_event__fprintf_stat_config(union perf_event *event, FILE *fp);

int create_perf_stat_counter(struct evsel *evsel,
			     struct perf_stat_config *config,
			     struct target *target,
			     int cpu_map_idx);
void evlist__print_counters(struct evlist *evlist, struct perf_stat_config *config,
			    struct target *_target, struct timespec *ts, int argc, const char **argv);

struct metric_expr;
double test_generic_metric(struct metric_expr *mexp, int aggr_idx);
#endif