summaryrefslogtreecommitdiff
path: root/tools/perf/util/evsel.h
blob: 35e3f6d66085b3885290e315e7268f0852f2bb1c (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
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __PERF_EVSEL_H
#define __PERF_EVSEL_H 1

#include <linux/list.h>
#include <stdbool.h>
#include <sys/types.h>
#include <linux/perf_event.h>
#include <linux/types.h>
#include <internal/evsel.h>
#include <perf/evsel.h>
#include "symbol_conf.h"
#include <internal/cpumap.h>

struct bpf_object;
struct cgroup;
struct perf_counts;
struct perf_stat_evsel;
union perf_event;

typedef int (evsel__sb_cb_t)(union perf_event *event, void *data);

enum perf_tool_event {
	PERF_TOOL_NONE		= 0,
	PERF_TOOL_DURATION_TIME = 1,
};

/** struct evsel - event selector
 *
 * @evlist - evlist this evsel is in, if it is in one.
 * @core - libperf evsel object
 * @name - Can be set to retain the original event name passed by the user,
 *         so that when showing results in tools such as 'perf stat', we
 *         show the name used, not some alias.
 * @id_pos: the position of the event id (PERF_SAMPLE_ID or
 *          PERF_SAMPLE_IDENTIFIER) in a sample event i.e. in the array of
 *          struct perf_record_sample
 * @is_pos: the position (counting backwards) of the event id (PERF_SAMPLE_ID or
 *          PERF_SAMPLE_IDENTIFIER) in a non-sample event i.e. if sample_id_all
 *          is used there is an id sample appended to non-sample events
 * @priv:   And what is in its containing unnamed union are tool specific
 */
struct evsel {
	struct perf_evsel	core;
	struct evlist	*evlist;
	char			*filter;
	struct perf_counts	*counts;
	struct perf_counts	*prev_raw_counts;
	int			idx;
	unsigned long		max_events;
	unsigned long		nr_events_printed;
	char			*name;
	double			scale;
	const char		*unit;
	struct tep_event	*tp_format;
	off_t			id_offset;
	struct perf_stat_evsel  *stats;
	void			*priv;
	u64			db_id;
	struct cgroup		*cgrp;
	void			*handler;
	unsigned int		sample_size;
	int			id_pos;
	int			is_pos;
	enum perf_tool_event	tool_event;
	bool			uniquified_name;
	bool			snapshot;
	bool 			supported;
	bool 			needs_swap;
	bool 			disabled;
	bool			no_aux_samples;
	bool			immediate;
	bool			tracking;
	bool			per_pkg;
	bool			precise_max;
	bool			ignore_missing_thread;
	bool			forced_leader;
	bool			use_uncore_alias;
	bool			is_libpfm_event;
	/* parse modifier helper */
	int			exclude_GH;
	int			sample_read;
	unsigned long		*per_pkg_mask;
	struct evsel		*leader;
	char			*group_name;
	bool			cmdline_group_boundary;
	struct list_head	config_terms;
	struct bpf_object	*bpf_obj;
	int			bpf_fd;
	int			err;
	bool			auto_merge_stats;
	bool			merged_stat;
	const char *		metric_expr;
	const char *		metric_name;
	struct evsel		**metric_events;
	struct evsel		*metric_leader;
	bool			collect_stat;
	bool			weak_group;
	bool			reset_group;
	bool			errored;
	bool			percore;
	int			cpu_iter;
	const char		*pmu_name;
	struct {
		evsel__sb_cb_t	*cb;
		void		*data;
	} side_band;
	/*
	 * For reporting purposes, an evsel sample can have a callchain
	 * synthesized from AUX area data. Keep track of synthesized sample
	 * types here. Note, the recorded sample_type cannot be changed because
	 * it is needed to continue to parse events.
	 * See also evsel__has_callchain().
	 */
	__u64			synth_sample_type;
};

struct perf_missing_features {
	bool sample_id_all;
	bool exclude_guest;
	bool mmap2;
	bool cloexec;
	bool clockid;
	bool clockid_wrong;
	bool lbr_flags;
	bool write_backward;
	bool group_read;
	bool ksymbol;
	bool bpf;
	bool aux_output;
	bool branch_hw_idx;
	bool cgroup;
};

extern struct perf_missing_features perf_missing_features;

struct perf_cpu_map;
struct target;
struct thread_map;
struct record_opts;

static inline struct perf_cpu_map *evsel__cpus(struct evsel *evsel)
{
	return perf_evsel__cpus(&evsel->core);
}

static inline int evsel__nr_cpus(struct evsel *evsel)
{
	return evsel__cpus(evsel)->nr;
}

void perf_counts_values__scale(struct perf_counts_values *count,
			       bool scale, s8 *pscaled);

void evsel__compute_deltas(struct evsel *evsel, int cpu, int thread,
			   struct perf_counts_values *count);

int evsel__object_config(size_t object_size,
			 int (*init)(struct evsel *evsel),
			 void (*fini)(struct evsel *evsel));

struct perf_pmu *evsel__find_pmu(struct evsel *evsel);
bool evsel__is_aux_event(struct evsel *evsel);

struct evsel *evsel__new_idx(struct perf_event_attr *attr, int idx);

static inline struct evsel *evsel__new(struct perf_event_attr *attr)
{
	return evsel__new_idx(attr, 0);
}

struct evsel *evsel__newtp_idx(const char *sys, const char *name, int idx);

/*
 * Returns pointer with encoded error via <linux/err.h> interface.
 */
static inline struct evsel *evsel__newtp(const char *sys, const char *name)
{
	return evsel__newtp_idx(sys, name, 0);
}

struct evsel *evsel__new_cycles(bool precise);

struct tep_event *event_format__new(const char *sys, const char *name);

void evsel__init(struct evsel *evsel, struct perf_event_attr *attr, int idx);
void evsel__exit(struct evsel *evsel);
void evsel__delete(struct evsel *evsel);

struct callchain_param;

void evsel__config(struct evsel *evsel, struct record_opts *opts,
		   struct callchain_param *callchain);
void evsel__config_callchain(struct evsel *evsel, struct record_opts *opts,
			     struct callchain_param *callchain);

int __evsel__sample_size(u64 sample_type);
void evsel__calc_id_pos(struct evsel *evsel);

bool evsel__is_cache_op_valid(u8 type, u8 op);

#define EVSEL__MAX_ALIASES 8

extern const char *evsel__hw_cache[PERF_COUNT_HW_CACHE_MAX][EVSEL__MAX_ALIASES];
extern const char *evsel__hw_cache_op[PERF_COUNT_HW_CACHE_OP_MAX][EVSEL__MAX_ALIASES];
extern const char *evsel__hw_cache_result[PERF_COUNT_HW_CACHE_RESULT_MAX][EVSEL__MAX_ALIASES];
extern const char *evsel__hw_names[PERF_COUNT_HW_MAX];
extern const char *evsel__sw_names[PERF_COUNT_SW_MAX];
int __evsel__hw_cache_type_op_res_name(u8 type, u8 op, u8 result, char *bf, size_t size);
const char *evsel__name(struct evsel *evsel);

const char *evsel__group_name(struct evsel *evsel);
int evsel__group_desc(struct evsel *evsel, char *buf, size_t size);

void __evsel__set_sample_bit(struct evsel *evsel, enum perf_event_sample_format bit);
void __evsel__reset_sample_bit(struct evsel *evsel, enum perf_event_sample_format bit);

#define evsel__set_sample_bit(evsel, bit) \
	__evsel__set_sample_bit(evsel, PERF_SAMPLE_##bit)

#define evsel__reset_sample_bit(evsel, bit) \
	__evsel__reset_sample_bit(evsel, PERF_SAMPLE_##bit)

void evsel__set_sample_id(struct evsel *evsel, bool use_sample_identifier);

int evsel__set_filter(struct evsel *evsel, const char *filter);
int evsel__append_tp_filter(struct evsel *evsel, const char *filter);
int evsel__append_addr_filter(struct evsel *evsel, const char *filter);
int evsel__enable_cpu(struct evsel *evsel, int cpu);
int evsel__enable(struct evsel *evsel);
int evsel__disable(struct evsel *evsel);
int evsel__disable_cpu(struct evsel *evsel, int cpu);

int evsel__open_per_cpu(struct evsel *evsel, struct perf_cpu_map *cpus, int cpu);
int evsel__open_per_thread(struct evsel *evsel, struct perf_thread_map *threads);
int evsel__open(struct evsel *evsel, struct perf_cpu_map *cpus,
		struct perf_thread_map *threads);
void evsel__close(struct evsel *evsel);

struct perf_sample;

void *evsel__rawptr(struct evsel *evsel, struct perf_sample *sample, const char *name);
u64 evsel__intval(struct evsel *evsel, struct perf_sample *sample, const char *name);

static inline char *evsel__strval(struct evsel *evsel, struct perf_sample *sample, const char *name)
{
	return evsel__rawptr(evsel, sample, name);
}

struct tep_format_field;

u64 format_field__intval(struct tep_format_field *field, struct perf_sample *sample, bool needs_swap);

struct tep_format_field *evsel__field(struct evsel *evsel, const char *name);

#define evsel__match(evsel, t, c)		\
	(evsel->core.attr.type == PERF_TYPE_##t &&	\
	 evsel->core.attr.config == PERF_COUNT_##c)

static inline bool evsel__match2(struct evsel *e1, struct evsel *e2)
{
	return (e1->core.attr.type == e2->core.attr.type) &&
	       (e1->core.attr.config == e2->core.attr.config);
}

int evsel__read_counter(struct evsel *evsel, int cpu, int thread);

int __evsel__read_on_cpu(struct evsel *evsel, int cpu, int thread, bool scale);

/**
 * evsel__read_on_cpu - Read out the results on a CPU and thread
 *
 * @evsel - event selector to read value
 * @cpu - CPU of interest
 * @thread - thread of interest
 */
static inline int evsel__read_on_cpu(struct evsel *evsel, int cpu, int thread)
{
	return __evsel__read_on_cpu(evsel, cpu, thread, false);
}

/**
 * evsel__read_on_cpu_scaled - Read out the results on a CPU and thread, scaled
 *
 * @evsel - event selector to read value
 * @cpu - CPU of interest
 * @thread - thread of interest
 */
static inline int evsel__read_on_cpu_scaled(struct evsel *evsel, int cpu, int thread)
{
	return __evsel__read_on_cpu(evsel, cpu, thread, true);
}

int evsel__parse_sample(struct evsel *evsel, union perf_event *event,
			struct perf_sample *sample);

int evsel__parse_sample_timestamp(struct evsel *evsel, union perf_event *event,
				  u64 *timestamp);

static inline struct evsel *evsel__next(struct evsel *evsel)
{
	return list_entry(evsel->core.node.next, struct evsel, core.node);
}

static inline struct evsel *evsel__prev(struct evsel *evsel)
{
	return list_entry(evsel->core.node.prev, struct evsel, core.node);
}

/**
 * evsel__is_group_leader - Return whether given evsel is a leader event
 *
 * @evsel - evsel selector to be tested
 *
 * Return %true if @evsel is a group leader or a stand-alone event
 */
static inline bool evsel__is_group_leader(const struct evsel *evsel)
{
	return evsel->leader == evsel;
}

/**
 * evsel__is_group_event - Return whether given evsel is a group event
 *
 * @evsel - evsel selector to be tested
 *
 * Return %true iff event group view is enabled and @evsel is a actual group
 * leader which has other members in the group
 */
static inline bool evsel__is_group_event(struct evsel *evsel)
{
	if (!symbol_conf.event_group)
		return false;

	return evsel__is_group_leader(evsel) && evsel->core.nr_members > 1;
}

bool evsel__is_function_event(struct evsel *evsel);

static inline bool evsel__is_bpf_output(struct evsel *evsel)
{
	return evsel__match(evsel, SOFTWARE, SW_BPF_OUTPUT);
}

static inline bool evsel__is_clock(struct evsel *evsel)
{
	return evsel__match(evsel, SOFTWARE, SW_CPU_CLOCK) ||
	       evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK);
}

bool evsel__fallback(struct evsel *evsel, int err, char *msg, size_t msgsize);
int evsel__open_strerror(struct evsel *evsel, struct target *target,
			 int err, char *msg, size_t size);

static inline int evsel__group_idx(struct evsel *evsel)
{
	return evsel->idx - evsel->leader->idx;
}

/* Iterates group WITHOUT the leader. */
#define for_each_group_member(_evsel, _leader) 					\
for ((_evsel) = list_entry((_leader)->core.node.next, struct evsel, core.node); \
     (_evsel) && (_evsel)->leader == (_leader);					\
     (_evsel) = list_entry((_evsel)->core.node.next, struct evsel, core.node))

/* Iterates group WITH the leader. */
#define for_each_group_evsel(_evsel, _leader) 					\
for ((_evsel) = _leader; 							\
     (_evsel) && (_evsel)->leader == (_leader);					\
     (_evsel) = list_entry((_evsel)->core.node.next, struct evsel, core.node))

static inline bool evsel__has_branch_callstack(const struct evsel *evsel)
{
	return evsel->core.attr.branch_sample_type & PERF_SAMPLE_BRANCH_CALL_STACK;
}

static inline bool evsel__has_branch_hw_idx(const struct evsel *evsel)
{
	return evsel->core.attr.branch_sample_type & PERF_SAMPLE_BRANCH_HW_INDEX;
}

static inline bool evsel__has_callchain(const struct evsel *evsel)
{
	/*
	 * For reporting purposes, an evsel sample can have a recorded callchain
	 * or a callchain synthesized from AUX area data.
	 */
	return evsel->core.attr.sample_type & PERF_SAMPLE_CALLCHAIN ||
	       evsel->synth_sample_type & PERF_SAMPLE_CALLCHAIN;
}

static inline bool evsel__has_br_stack(const struct evsel *evsel)
{
	/*
	 * For reporting purposes, an evsel sample can have a recorded branch
	 * stack or a branch stack synthesized from AUX area data.
	 */
	return evsel->core.attr.sample_type & PERF_SAMPLE_BRANCH_STACK ||
	       evsel->synth_sample_type & PERF_SAMPLE_BRANCH_STACK;
}

static inline bool evsel__is_dummy_event(struct evsel *evsel)
{
	return (evsel->core.attr.type == PERF_TYPE_SOFTWARE) &&
	       (evsel->core.attr.config == PERF_COUNT_SW_DUMMY);
}

struct perf_env *evsel__env(struct evsel *evsel);

int evsel__store_ids(struct evsel *evsel, struct evlist *evlist);
#endif /* __PERF_EVSEL_H */