1 /* SPDX-License-Identifier: GPL-2.0 */
3 #define __PERF_EVSEL_H 1
5 #include <linux/list.h>
8 #include <linux/perf_event.h>
9 #include <linux/types.h>
10 #include <internal/evsel.h>
11 #include <perf/evsel.h>
12 #include "symbol_conf.h"
19 struct perf_stat_config;
20 struct perf_stat_evsel;
22 struct bpf_counter_ops;
25 struct bperf_leader_bpf;
26 struct bperf_follower_bpf;
28 typedef int (evsel__sb_cb_t)(union perf_event *event, void *data);
30 /** struct evsel - event selector
32 * @evlist - evlist this evsel is in, if it is in one.
33 * @core - libperf evsel object
34 * @name - Can be set to retain the original event name passed by the user,
35 * so that when showing results in tools such as 'perf stat', we
36 * show the name used, not some alias.
37 * @id_pos: the position of the event id (PERF_SAMPLE_ID or
38 * PERF_SAMPLE_IDENTIFIER) in a sample event i.e. in the array of
39 * struct perf_record_sample
40 * @is_pos: the position (counting backwards) of the event id (PERF_SAMPLE_ID or
41 * PERF_SAMPLE_IDENTIFIER) in a non-sample event i.e. if sample_id_all
42 * is used there is an id sample appended to non-sample events
43 * @priv: And what is in its containing unnamed union are tool specific
46 struct perf_evsel core;
47 struct evlist *evlist;
51 unsigned int sample_size;
54 * These fields can be set in the parse-events code or similar.
55 * Please check evsel__clone() to copy them properly so that
56 * they can be released properly.
61 const char *group_pmu_name;
62 #ifdef HAVE_LIBTRACEEVENT
65 struct tep_event *tp_format;
68 unsigned long max_events;
72 const char *metric_id;
74 * This point to the first evsel with the same name, intended to store the
75 * aggregated counts in aggregation mode.
77 struct evsel *first_wildcard_match;
78 /* parse modifier helper */
93 struct bpf_object *bpf_obj;
94 struct list_head config_terms;
95 u64 alternate_hw_config;
99 * metric fields are similar, but needs more care as they can have
100 * references to other metric (evsel).
102 struct evsel **metric_events;
103 struct evsel *metric_leader;
106 struct perf_counts *counts;
107 struct perf_counts *prev_raw_counts;
108 unsigned long nr_events_printed;
109 struct perf_stat_evsel *stats;
112 bool uniquified_name;
119 bool ignore_missing_thread;
121 bool cmdline_group_boundary;
124 bool needs_auxtrace_mmap;
125 bool default_metricgroup; /* A member of the Default metricgroup */
127 struct hashmap *per_pkg_mask;
129 int script_output_type;
135 * For reporting purposes, an evsel sample can have a callchain
136 * synthesized from AUX area data. Keep track of synthesized sample
137 * types here. Note, the recorded sample_type cannot be changed because
138 * it is needed to continue to parse events.
139 * See also evsel__has_callchain().
141 __u64 synth_sample_type;
144 * Store the branch counter related information.
145 * br_cntr_idx: The idx of the branch counter event in the evlist
146 * br_cntr_nr: The number of the branch counter event in the group
147 * (Only available for the leader event)
148 * abbr_name: The abbreviation name assigned to an event which is
149 * logged by the branch counter.
150 * The abbr name is from A to Z9. NA is applied if out
158 * bpf_counter_ops serves two use cases:
159 * 1. perf-stat -b counting events used byBPF programs
160 * 2. perf-stat --use-bpf use BPF programs to aggregate counts
162 struct bpf_counter_ops *bpf_counter_ops;
164 struct list_head bpf_counter_list; /* for perf-stat -b */
165 struct list_head bpf_filters; /* for perf-record --filter */
167 /* for perf-stat --use-bpf */
168 int bperf_leader_prog_fd;
169 int bperf_leader_link_fd;
171 struct bperf_leader_bpf *leader_skel;
172 struct bperf_follower_bpf *follower_skel;
175 unsigned long open_flags;
176 int precise_ip_original;
178 /* The PMU the event is from. Used for missing_features, PMU name, etc. */
179 struct perf_pmu *pmu;
181 /* For tool events */
182 /* Beginning time subtracted when the counter is read. */
184 /* Defaults for retirement latency events. */
185 struct _retirement_latency {
189 } retirement_latency;
190 /* duration_time is a single global time. */
193 * user_time and system_time read an initial value potentially
194 * per-CPU or per-pid.
196 struct xyarray *start_times;
198 /* Is the tool's fd for /proc/pid/stat or /proc/stat. */
202 struct perf_missing_features {
221 bool branch_counters;
223 bool inherit_sample_read;
226 extern struct perf_missing_features perf_missing_features;
232 static inline struct perf_cpu_map *evsel__cpus(struct evsel *evsel)
234 return perf_evsel__cpus(&evsel->core);
237 static inline int evsel__nr_cpus(struct evsel *evsel)
239 return perf_cpu_map__nr(evsel__cpus(evsel));
242 void evsel__compute_deltas(struct evsel *evsel, int cpu, int thread,
243 struct perf_counts_values *count);
245 int evsel__object_config(size_t object_size,
246 int (*init)(struct evsel *evsel),
247 void (*fini)(struct evsel *evsel));
249 struct perf_pmu *evsel__find_pmu(const struct evsel *evsel);
250 const char *evsel__pmu_name(const struct evsel *evsel);
251 bool evsel__is_aux_event(const struct evsel *evsel);
253 struct evsel *evsel__new_idx(struct perf_event_attr *attr, int idx);
255 static inline struct evsel *evsel__new(struct perf_event_attr *attr)
257 return evsel__new_idx(attr, 0);
260 struct evsel *evsel__clone(struct evsel *dest, struct evsel *orig);
262 int copy_config_terms(struct list_head *dst, struct list_head *src);
263 void free_config_terms(struct list_head *config_terms);
267 * Returns pointer with encoded error via <linux/err.h> interface.
269 struct evsel *evsel__newtp_idx(const char *sys, const char *name, int idx, bool format);
270 static inline struct evsel *evsel__newtp(const char *sys, const char *name)
272 return evsel__newtp_idx(sys, name, 0, true);
275 #ifdef HAVE_LIBTRACEEVENT
276 struct tep_event *evsel__tp_format(struct evsel *evsel);
279 void evsel__init(struct evsel *evsel, struct perf_event_attr *attr, int idx);
280 void evsel__exit(struct evsel *evsel);
281 void evsel__delete(struct evsel *evsel);
283 struct callchain_param;
285 void evsel__config(struct evsel *evsel, struct record_opts *opts,
286 struct callchain_param *callchain);
287 void evsel__config_callchain(struct evsel *evsel, struct record_opts *opts,
288 struct callchain_param *callchain);
290 int __evsel__sample_size(u64 sample_type);
291 void evsel__calc_id_pos(struct evsel *evsel);
293 bool evsel__is_cache_op_valid(u8 type, u8 op);
295 static inline bool evsel__is_bpf(struct evsel *evsel)
297 return evsel->bpf_counter_ops != NULL;
300 static inline bool evsel__is_bperf(struct evsel *evsel)
302 return evsel->bpf_counter_ops != NULL && list_empty(&evsel->bpf_counter_list);
305 #define EVSEL__MAX_ALIASES 8
307 extern const char *const evsel__hw_cache[PERF_COUNT_HW_CACHE_MAX][EVSEL__MAX_ALIASES];
308 extern const char *const evsel__hw_cache_op[PERF_COUNT_HW_CACHE_OP_MAX][EVSEL__MAX_ALIASES];
309 extern const char *const evsel__hw_cache_result[PERF_COUNT_HW_CACHE_RESULT_MAX][EVSEL__MAX_ALIASES];
310 extern const char *const evsel__hw_names[PERF_COUNT_HW_MAX];
311 extern const char *const evsel__sw_names[PERF_COUNT_SW_MAX];
312 extern char *evsel__bpf_counter_events;
313 bool evsel__match_bpf_counter_events(const char *name);
314 int arch_evsel__hw_name(struct evsel *evsel, char *bf, size_t size);
316 int __evsel__hw_cache_type_op_res_name(u8 type, u8 op, u8 result, char *bf, size_t size);
317 const char *evsel__name(struct evsel *evsel);
318 bool evsel__name_is(struct evsel *evsel, const char *name);
319 const char *evsel__metric_id(const struct evsel *evsel);
321 static inline bool evsel__is_retire_lat(const struct evsel *evsel)
323 return evsel->retire_lat;
326 const char *evsel__group_name(struct evsel *evsel);
327 int evsel__group_desc(struct evsel *evsel, char *buf, size_t size);
329 void __evsel__set_sample_bit(struct evsel *evsel, enum perf_event_sample_format bit);
330 void __evsel__reset_sample_bit(struct evsel *evsel, enum perf_event_sample_format bit);
332 #define evsel__set_sample_bit(evsel, bit) \
333 __evsel__set_sample_bit(evsel, PERF_SAMPLE_##bit)
335 #define evsel__reset_sample_bit(evsel, bit) \
336 __evsel__reset_sample_bit(evsel, PERF_SAMPLE_##bit)
338 void evsel__set_sample_id(struct evsel *evsel, bool use_sample_identifier);
340 void arch_evsel__set_sample_weight(struct evsel *evsel);
341 void arch__post_evsel_config(struct evsel *evsel, struct perf_event_attr *attr);
342 int arch_evsel__open_strerror(struct evsel *evsel, char *msg, size_t size);
344 int evsel__set_filter(struct evsel *evsel, const char *filter);
345 int evsel__append_tp_filter(struct evsel *evsel, const char *filter);
346 int evsel__append_addr_filter(struct evsel *evsel, const char *filter);
347 int evsel__enable_cpu(struct evsel *evsel, int cpu_map_idx);
348 int evsel__enable(struct evsel *evsel);
349 int evsel__disable(struct evsel *evsel);
350 int evsel__disable_cpu(struct evsel *evsel, int cpu_map_idx);
352 int evsel__open_per_cpu(struct evsel *evsel, struct perf_cpu_map *cpus, int cpu_map_idx);
353 int evsel__open_per_thread(struct evsel *evsel, struct perf_thread_map *threads);
354 int evsel__open(struct evsel *evsel, struct perf_cpu_map *cpus,
355 struct perf_thread_map *threads);
356 void evsel__close(struct evsel *evsel);
357 int evsel__prepare_open(struct evsel *evsel, struct perf_cpu_map *cpus,
358 struct perf_thread_map *threads);
360 bool evsel__precise_ip_fallback(struct evsel *evsel);
364 #ifdef HAVE_LIBTRACEEVENT
365 void *evsel__rawptr(struct evsel *evsel, struct perf_sample *sample, const char *name);
366 u64 evsel__intval(struct evsel *evsel, struct perf_sample *sample, const char *name);
367 u64 evsel__intval_common(struct evsel *evsel, struct perf_sample *sample, const char *name);
368 char evsel__taskstate(struct evsel *evsel, struct perf_sample *sample, const char *name);
370 static inline char *evsel__strval(struct evsel *evsel, struct perf_sample *sample, const char *name)
372 return evsel__rawptr(evsel, sample, name);
376 struct tep_format_field;
378 u64 format_field__intval(struct tep_format_field *field, struct perf_sample *sample, bool needs_swap);
380 struct tep_format_field *evsel__field(struct evsel *evsel, const char *name);
381 struct tep_format_field *evsel__common_field(struct evsel *evsel, const char *name);
383 bool __evsel__match(const struct evsel *evsel, u32 type, u64 config);
385 #define evsel__match(evsel, t, c) __evsel__match(evsel, PERF_TYPE_##t, PERF_COUNT_##c)
387 int evsel__read_counter(struct evsel *evsel, int cpu_map_idx, int thread);
389 int __evsel__read_on_cpu(struct evsel *evsel, int cpu_map_idx, int thread, bool scale);
392 * evsel__read_on_cpu - Read out the results on a CPU and thread
394 * @evsel - event selector to read value
395 * @cpu_map_idx - CPU of interest
396 * @thread - thread of interest
398 static inline int evsel__read_on_cpu(struct evsel *evsel, int cpu_map_idx, int thread)
400 return __evsel__read_on_cpu(evsel, cpu_map_idx, thread, false);
404 * evsel__read_on_cpu_scaled - Read out the results on a CPU and thread, scaled
406 * @evsel - event selector to read value
407 * @cpu_map_idx - CPU of interest
408 * @thread - thread of interest
410 static inline int evsel__read_on_cpu_scaled(struct evsel *evsel, int cpu_map_idx, int thread)
412 return __evsel__read_on_cpu(evsel, cpu_map_idx, thread, true);
415 int evsel__parse_sample(struct evsel *evsel, union perf_event *event,
416 struct perf_sample *sample);
418 int evsel__parse_sample_timestamp(struct evsel *evsel, union perf_event *event,
421 u16 evsel__id_hdr_size(const struct evsel *evsel);
423 static inline struct evsel *evsel__next(struct evsel *evsel)
425 return list_entry(evsel->core.node.next, struct evsel, core.node);
428 static inline struct evsel *evsel__prev(struct evsel *evsel)
430 return list_entry(evsel->core.node.prev, struct evsel, core.node);
434 * evsel__is_group_leader - Return whether given evsel is a leader event
436 * @evsel - evsel selector to be tested
438 * Return %true if @evsel is a group leader or a stand-alone event
440 static inline bool evsel__is_group_leader(const struct evsel *evsel)
442 return evsel->core.leader == &evsel->core;
446 * evsel__is_group_event - Return whether given evsel is a group event
448 * @evsel - evsel selector to be tested
450 * Return %true iff event group view is enabled and @evsel is a actual group
451 * leader which has other members in the group
453 static inline bool evsel__is_group_event(struct evsel *evsel)
455 if (!symbol_conf.event_group)
458 return evsel__is_group_leader(evsel) && evsel->core.nr_members > 1;
461 bool evsel__is_function_event(struct evsel *evsel);
463 static inline bool evsel__is_bpf_output(struct evsel *evsel)
465 return evsel__match(evsel, SOFTWARE, SW_BPF_OUTPUT);
468 static inline bool evsel__is_clock(const struct evsel *evsel)
470 return evsel__match(evsel, SOFTWARE, SW_CPU_CLOCK) ||
471 evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK);
474 bool evsel__fallback(struct evsel *evsel, struct target *target, int err,
475 char *msg, size_t msgsize);
476 int evsel__open_strerror(struct evsel *evsel, struct target *target,
477 int err, char *msg, size_t size);
479 static inline int evsel__group_idx(struct evsel *evsel)
481 return evsel->core.idx - evsel->core.leader->idx;
484 /* Iterates group WITHOUT the leader. */
485 #define for_each_group_member_head(_evsel, _leader, _head) \
486 for ((_evsel) = list_entry((_leader)->core.node.next, struct evsel, core.node); \
487 (_evsel) && &(_evsel)->core.node != (_head) && \
488 (_evsel)->core.leader == &(_leader)->core; \
489 (_evsel) = list_entry((_evsel)->core.node.next, struct evsel, core.node))
491 #define for_each_group_member(_evsel, _leader) \
492 for_each_group_member_head(_evsel, _leader, &(_leader)->evlist->core.entries)
494 /* Iterates group WITH the leader. */
495 #define for_each_group_evsel_head(_evsel, _leader, _head) \
496 for ((_evsel) = _leader; \
497 (_evsel) && &(_evsel)->core.node != (_head) && \
498 (_evsel)->core.leader == &(_leader)->core; \
499 (_evsel) = list_entry((_evsel)->core.node.next, struct evsel, core.node))
501 #define for_each_group_evsel(_evsel, _leader) \
502 for_each_group_evsel_head(_evsel, _leader, &(_leader)->evlist->core.entries)
504 static inline bool evsel__has_branch_callstack(const struct evsel *evsel)
506 return evsel->core.attr.branch_sample_type & PERF_SAMPLE_BRANCH_CALL_STACK;
509 static inline bool evsel__has_branch_hw_idx(const struct evsel *evsel)
511 return evsel->core.attr.branch_sample_type & PERF_SAMPLE_BRANCH_HW_INDEX;
514 static inline bool evsel__has_callchain(const struct evsel *evsel)
517 * For reporting purposes, an evsel sample can have a recorded callchain
518 * or a callchain synthesized from AUX area data.
520 return evsel->core.attr.sample_type & PERF_SAMPLE_CALLCHAIN ||
521 evsel->synth_sample_type & PERF_SAMPLE_CALLCHAIN;
524 static inline bool evsel__has_br_stack(const struct evsel *evsel)
527 * For reporting purposes, an evsel sample can have a recorded branch
528 * stack or a branch stack synthesized from AUX area data.
530 return evsel->core.attr.sample_type & PERF_SAMPLE_BRANCH_STACK ||
531 evsel->synth_sample_type & PERF_SAMPLE_BRANCH_STACK;
534 static inline bool evsel__is_dummy_event(struct evsel *evsel)
536 return (evsel->core.attr.type == PERF_TYPE_SOFTWARE) &&
537 (evsel->core.attr.config == PERF_COUNT_SW_DUMMY);
540 struct perf_env *evsel__env(struct evsel *evsel);
542 int evsel__store_ids(struct evsel *evsel, struct evlist *evlist);
544 void evsel__zero_per_pkg(struct evsel *evsel);
545 bool evsel__is_hybrid(const struct evsel *evsel);
546 struct evsel *evsel__leader(const struct evsel *evsel);
547 bool evsel__has_leader(struct evsel *evsel, struct evsel *leader);
548 bool evsel__is_leader(struct evsel *evsel);
549 void evsel__set_leader(struct evsel *evsel, struct evsel *leader);
550 int evsel__source_count(const struct evsel *evsel);
551 void evsel__remove_from_group(struct evsel *evsel, struct evsel *leader);
553 bool arch_evsel__must_be_in_group(const struct evsel *evsel);
555 bool evsel__set_needs_uniquify(struct evsel *counter, const struct perf_stat_config *config);
556 void evsel__uniquify_counter(struct evsel *counter);
559 * Macro to swap the bit-field postition and size.
561 * - dont need to swap the entire u64 &&
562 * - when u64 has variable bit-field sizes &&
563 * - when presented in a host endian which is different
564 * than the source endian of the perf.data file
566 #define bitfield_swap(src, pos, size) \
567 ((((src) >> (pos)) & ((1ull << (size)) - 1)) << (63 - ((pos) + (size) - 1)))
569 u64 evsel__bitfield_swap_branch_flags(u64 value);
570 void evsel__set_config_if_unset(struct perf_pmu *pmu, struct evsel *evsel,
571 const char *config_name, u64 val);
573 bool evsel__is_offcpu_event(struct evsel *evsel);
575 #endif /* __PERF_EVSEL_H */