1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef __PERF_EVSEL_H 3 #define __PERF_EVSEL_H 1 4 5 #include <linux/list.h> 6 #include <stdbool.h> 7 #include <sys/types.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" 13 #include "pmus.h" 14 15 struct bpf_object; 16 struct cgroup; 17 struct perf_counts; 18 struct perf_stat_evsel; 19 union perf_event; 20 struct bpf_counter_ops; 21 struct target; 22 struct hashmap; 23 struct bperf_leader_bpf; 24 struct bperf_follower_bpf; 25 struct perf_pmu; 26 27 typedef int (evsel__sb_cb_t)(union perf_event *event, void *data); 28 29 enum perf_tool_event { 30 PERF_TOOL_NONE = 0, 31 PERF_TOOL_DURATION_TIME = 1, 32 PERF_TOOL_USER_TIME = 2, 33 PERF_TOOL_SYSTEM_TIME = 3, 34 35 PERF_TOOL_MAX, 36 }; 37 38 const char *perf_tool_event__to_str(enum perf_tool_event ev); 39 enum perf_tool_event perf_tool_event__from_str(const char *str); 40 41 #define perf_tool_event__for_each_event(ev) \ 42 for ((ev) = PERF_TOOL_DURATION_TIME; (ev) < PERF_TOOL_MAX; ev++) 43 44 /** struct evsel - event selector 45 * 46 * @evlist - evlist this evsel is in, if it is in one. 47 * @core - libperf evsel object 48 * @name - Can be set to retain the original event name passed by the user, 49 * so that when showing results in tools such as 'perf stat', we 50 * show the name used, not some alias. 51 * @id_pos: the position of the event id (PERF_SAMPLE_ID or 52 * PERF_SAMPLE_IDENTIFIER) in a sample event i.e. in the array of 53 * struct perf_record_sample 54 * @is_pos: the position (counting backwards) of the event id (PERF_SAMPLE_ID or 55 * PERF_SAMPLE_IDENTIFIER) in a non-sample event i.e. if sample_id_all 56 * is used there is an id sample appended to non-sample events 57 * @priv: And what is in its containing unnamed union are tool specific 58 */ 59 struct evsel { 60 struct perf_evsel core; 61 struct evlist *evlist; 62 off_t id_offset; 63 int id_pos; 64 int is_pos; 65 unsigned int sample_size; 66 67 /* 68 * These fields can be set in the parse-events code or similar. 69 * Please check evsel__clone() to copy them properly so that 70 * they can be released properly. 71 */ 72 struct { 73 char *name; 74 char *group_name; 75 const char *pmu_name; 76 const char *group_pmu_name; 77 #ifdef HAVE_LIBTRACEEVENT 78 struct tep_event *tp_format; 79 #endif 80 char *filter; 81 unsigned long max_events; 82 double scale; 83 const char *unit; 84 struct cgroup *cgrp; 85 const char *metric_id; 86 enum perf_tool_event tool_event; 87 /* parse modifier helper */ 88 int exclude_GH; 89 int sample_read; 90 bool snapshot; 91 bool per_pkg; 92 bool percore; 93 bool precise_max; 94 bool is_libpfm_event; 95 bool auto_merge_stats; 96 bool collect_stat; 97 bool weak_group; 98 bool bpf_counter; 99 bool use_config_name; 100 bool skippable; 101 int bpf_fd; 102 struct bpf_object *bpf_obj; 103 struct list_head config_terms; 104 }; 105 106 /* 107 * metric fields are similar, but needs more care as they can have 108 * references to other metric (evsel). 109 */ 110 struct evsel **metric_events; 111 struct evsel *metric_leader; 112 113 void *handler; 114 struct perf_counts *counts; 115 struct perf_counts *prev_raw_counts; 116 unsigned long nr_events_printed; 117 struct perf_stat_evsel *stats; 118 void *priv; 119 u64 db_id; 120 bool uniquified_name; 121 bool supported; 122 bool needs_swap; 123 bool disabled; 124 bool no_aux_samples; 125 bool immediate; 126 bool tracking; 127 bool ignore_missing_thread; 128 bool forced_leader; 129 bool cmdline_group_boundary; 130 bool merged_stat; 131 bool reset_group; 132 bool errored; 133 bool needs_auxtrace_mmap; 134 bool default_metricgroup; /* A member of the Default metricgroup */ 135 struct hashmap *per_pkg_mask; 136 int err; 137 struct { 138 evsel__sb_cb_t *cb; 139 void *data; 140 } side_band; 141 /* 142 * For reporting purposes, an evsel sample can have a callchain 143 * synthesized from AUX area data. Keep track of synthesized sample 144 * types here. Note, the recorded sample_type cannot be changed because 145 * it is needed to continue to parse events. 146 * See also evsel__has_callchain(). 147 */ 148 __u64 synth_sample_type; 149 150 /* 151 * bpf_counter_ops serves two use cases: 152 * 1. perf-stat -b counting events used byBPF programs 153 * 2. perf-stat --use-bpf use BPF programs to aggregate counts 154 */ 155 struct bpf_counter_ops *bpf_counter_ops; 156 157 struct list_head bpf_counter_list; /* for perf-stat -b */ 158 struct list_head bpf_filters; /* for perf-record --filter */ 159 160 /* for perf-stat --use-bpf */ 161 int bperf_leader_prog_fd; 162 int bperf_leader_link_fd; 163 union { 164 struct bperf_leader_bpf *leader_skel; 165 struct bperf_follower_bpf *follower_skel; 166 void *bpf_skel; 167 }; 168 unsigned long open_flags; 169 int precise_ip_original; 170 171 /* for missing_features */ 172 struct perf_pmu *pmu; 173 }; 174 175 struct perf_missing_features { 176 bool sample_id_all; 177 bool exclude_guest; 178 bool mmap2; 179 bool cloexec; 180 bool clockid; 181 bool clockid_wrong; 182 bool lbr_flags; 183 bool write_backward; 184 bool group_read; 185 bool ksymbol; 186 bool bpf; 187 bool aux_output; 188 bool branch_hw_idx; 189 bool cgroup; 190 bool data_page_size; 191 bool code_page_size; 192 bool weight_struct; 193 bool read_lost; 194 bool branch_counters; 195 }; 196 197 extern struct perf_missing_features perf_missing_features; 198 199 struct perf_cpu_map; 200 struct thread_map; 201 struct record_opts; 202 203 static inline struct perf_cpu_map *evsel__cpus(struct evsel *evsel) 204 { 205 return perf_evsel__cpus(&evsel->core); 206 } 207 208 static inline int evsel__nr_cpus(struct evsel *evsel) 209 { 210 return perf_cpu_map__nr(evsel__cpus(evsel)); 211 } 212 213 void evsel__compute_deltas(struct evsel *evsel, int cpu, int thread, 214 struct perf_counts_values *count); 215 216 int evsel__object_config(size_t object_size, 217 int (*init)(struct evsel *evsel), 218 void (*fini)(struct evsel *evsel)); 219 220 struct perf_pmu *evsel__find_pmu(const struct evsel *evsel); 221 bool evsel__is_aux_event(const struct evsel *evsel); 222 223 struct evsel *evsel__new_idx(struct perf_event_attr *attr, int idx); 224 225 static inline struct evsel *evsel__new(struct perf_event_attr *attr) 226 { 227 return evsel__new_idx(attr, 0); 228 } 229 230 struct evsel *evsel__clone(struct evsel *orig); 231 232 int copy_config_terms(struct list_head *dst, struct list_head *src); 233 void free_config_terms(struct list_head *config_terms); 234 235 236 #ifdef HAVE_LIBTRACEEVENT 237 struct evsel *evsel__newtp_idx(const char *sys, const char *name, int idx); 238 239 /* 240 * Returns pointer with encoded error via <linux/err.h> interface. 241 */ 242 static inline struct evsel *evsel__newtp(const char *sys, const char *name) 243 { 244 return evsel__newtp_idx(sys, name, 0); 245 } 246 #endif 247 248 #ifdef HAVE_LIBTRACEEVENT 249 struct tep_event *event_format__new(const char *sys, const char *name); 250 #endif 251 252 void evsel__init(struct evsel *evsel, struct perf_event_attr *attr, int idx); 253 void evsel__exit(struct evsel *evsel); 254 void evsel__delete(struct evsel *evsel); 255 256 struct callchain_param; 257 258 void evsel__config(struct evsel *evsel, struct record_opts *opts, 259 struct callchain_param *callchain); 260 void evsel__config_callchain(struct evsel *evsel, struct record_opts *opts, 261 struct callchain_param *callchain); 262 263 int __evsel__sample_size(u64 sample_type); 264 void evsel__calc_id_pos(struct evsel *evsel); 265 266 bool evsel__is_cache_op_valid(u8 type, u8 op); 267 268 static inline bool evsel__is_bpf(struct evsel *evsel) 269 { 270 return evsel->bpf_counter_ops != NULL; 271 } 272 273 static inline bool evsel__is_bperf(struct evsel *evsel) 274 { 275 return evsel->bpf_counter_ops != NULL && list_empty(&evsel->bpf_counter_list); 276 } 277 278 #define EVSEL__MAX_ALIASES 8 279 280 extern const char *const evsel__hw_cache[PERF_COUNT_HW_CACHE_MAX][EVSEL__MAX_ALIASES]; 281 extern const char *const evsel__hw_cache_op[PERF_COUNT_HW_CACHE_OP_MAX][EVSEL__MAX_ALIASES]; 282 extern const char *const evsel__hw_cache_result[PERF_COUNT_HW_CACHE_RESULT_MAX][EVSEL__MAX_ALIASES]; 283 extern const char *const evsel__hw_names[PERF_COUNT_HW_MAX]; 284 extern const char *const evsel__sw_names[PERF_COUNT_SW_MAX]; 285 extern char *evsel__bpf_counter_events; 286 bool evsel__match_bpf_counter_events(const char *name); 287 int arch_evsel__hw_name(struct evsel *evsel, char *bf, size_t size); 288 289 int __evsel__hw_cache_type_op_res_name(u8 type, u8 op, u8 result, char *bf, size_t size); 290 const char *evsel__name(struct evsel *evsel); 291 bool evsel__name_is(struct evsel *evsel, const char *name); 292 const char *evsel__metric_id(const struct evsel *evsel); 293 294 static inline bool evsel__is_tool(const struct evsel *evsel) 295 { 296 return evsel->tool_event != PERF_TOOL_NONE; 297 } 298 299 const char *evsel__group_name(struct evsel *evsel); 300 int evsel__group_desc(struct evsel *evsel, char *buf, size_t size); 301 302 void __evsel__set_sample_bit(struct evsel *evsel, enum perf_event_sample_format bit); 303 void __evsel__reset_sample_bit(struct evsel *evsel, enum perf_event_sample_format bit); 304 305 #define evsel__set_sample_bit(evsel, bit) \ 306 __evsel__set_sample_bit(evsel, PERF_SAMPLE_##bit) 307 308 #define evsel__reset_sample_bit(evsel, bit) \ 309 __evsel__reset_sample_bit(evsel, PERF_SAMPLE_##bit) 310 311 void evsel__set_sample_id(struct evsel *evsel, bool use_sample_identifier); 312 313 void arch_evsel__set_sample_weight(struct evsel *evsel); 314 void arch__post_evsel_config(struct evsel *evsel, struct perf_event_attr *attr); 315 int arch_evsel__open_strerror(struct evsel *evsel, char *msg, size_t size); 316 317 int evsel__set_filter(struct evsel *evsel, const char *filter); 318 int evsel__append_tp_filter(struct evsel *evsel, const char *filter); 319 int evsel__append_addr_filter(struct evsel *evsel, const char *filter); 320 int evsel__enable_cpu(struct evsel *evsel, int cpu_map_idx); 321 int evsel__enable(struct evsel *evsel); 322 int evsel__disable(struct evsel *evsel); 323 int evsel__disable_cpu(struct evsel *evsel, int cpu_map_idx); 324 325 int evsel__open_per_cpu(struct evsel *evsel, struct perf_cpu_map *cpus, int cpu_map_idx); 326 int evsel__open_per_thread(struct evsel *evsel, struct perf_thread_map *threads); 327 int evsel__open(struct evsel *evsel, struct perf_cpu_map *cpus, 328 struct perf_thread_map *threads); 329 void evsel__close(struct evsel *evsel); 330 int evsel__prepare_open(struct evsel *evsel, struct perf_cpu_map *cpus, 331 struct perf_thread_map *threads); 332 bool evsel__detect_missing_features(struct evsel *evsel); 333 334 bool evsel__precise_ip_fallback(struct evsel *evsel); 335 336 struct perf_sample; 337 338 #ifdef HAVE_LIBTRACEEVENT 339 void *evsel__rawptr(struct evsel *evsel, struct perf_sample *sample, const char *name); 340 u64 evsel__intval(struct evsel *evsel, struct perf_sample *sample, const char *name); 341 u64 evsel__intval_common(struct evsel *evsel, struct perf_sample *sample, const char *name); 342 343 static inline char *evsel__strval(struct evsel *evsel, struct perf_sample *sample, const char *name) 344 { 345 return evsel__rawptr(evsel, sample, name); 346 } 347 #endif 348 349 struct tep_format_field; 350 351 u64 format_field__intval(struct tep_format_field *field, struct perf_sample *sample, bool needs_swap); 352 353 struct tep_format_field *evsel__field(struct evsel *evsel, const char *name); 354 struct tep_format_field *evsel__common_field(struct evsel *evsel, const char *name); 355 356 static inline bool __evsel__match(const struct evsel *evsel, u32 type, u64 config) 357 { 358 if (evsel->core.attr.type != type) 359 return false; 360 361 if ((type == PERF_TYPE_HARDWARE || type == PERF_TYPE_HW_CACHE) && 362 perf_pmus__supports_extended_type()) 363 return (evsel->core.attr.config & PERF_HW_EVENT_MASK) == config; 364 365 return evsel->core.attr.config == config; 366 } 367 368 #define evsel__match(evsel, t, c) __evsel__match(evsel, PERF_TYPE_##t, PERF_COUNT_##c) 369 370 static inline bool evsel__match2(struct evsel *e1, struct evsel *e2) 371 { 372 return (e1->core.attr.type == e2->core.attr.type) && 373 (e1->core.attr.config == e2->core.attr.config); 374 } 375 376 int evsel__read_counter(struct evsel *evsel, int cpu_map_idx, int thread); 377 378 int __evsel__read_on_cpu(struct evsel *evsel, int cpu_map_idx, int thread, bool scale); 379 380 /** 381 * evsel__read_on_cpu - Read out the results on a CPU and thread 382 * 383 * @evsel - event selector to read value 384 * @cpu_map_idx - CPU of interest 385 * @thread - thread of interest 386 */ 387 static inline int evsel__read_on_cpu(struct evsel *evsel, int cpu_map_idx, int thread) 388 { 389 return __evsel__read_on_cpu(evsel, cpu_map_idx, thread, false); 390 } 391 392 /** 393 * evsel__read_on_cpu_scaled - Read out the results on a CPU and thread, scaled 394 * 395 * @evsel - event selector to read value 396 * @cpu_map_idx - CPU of interest 397 * @thread - thread of interest 398 */ 399 static inline int evsel__read_on_cpu_scaled(struct evsel *evsel, int cpu_map_idx, int thread) 400 { 401 return __evsel__read_on_cpu(evsel, cpu_map_idx, thread, true); 402 } 403 404 int evsel__parse_sample(struct evsel *evsel, union perf_event *event, 405 struct perf_sample *sample); 406 407 int evsel__parse_sample_timestamp(struct evsel *evsel, union perf_event *event, 408 u64 *timestamp); 409 410 u16 evsel__id_hdr_size(struct evsel *evsel); 411 412 static inline struct evsel *evsel__next(struct evsel *evsel) 413 { 414 return list_entry(evsel->core.node.next, struct evsel, core.node); 415 } 416 417 static inline struct evsel *evsel__prev(struct evsel *evsel) 418 { 419 return list_entry(evsel->core.node.prev, struct evsel, core.node); 420 } 421 422 /** 423 * evsel__is_group_leader - Return whether given evsel is a leader event 424 * 425 * @evsel - evsel selector to be tested 426 * 427 * Return %true if @evsel is a group leader or a stand-alone event 428 */ 429 static inline bool evsel__is_group_leader(const struct evsel *evsel) 430 { 431 return evsel->core.leader == &evsel->core; 432 } 433 434 /** 435 * evsel__is_group_event - Return whether given evsel is a group event 436 * 437 * @evsel - evsel selector to be tested 438 * 439 * Return %true iff event group view is enabled and @evsel is a actual group 440 * leader which has other members in the group 441 */ 442 static inline bool evsel__is_group_event(struct evsel *evsel) 443 { 444 if (!symbol_conf.event_group) 445 return false; 446 447 return evsel__is_group_leader(evsel) && evsel->core.nr_members > 1; 448 } 449 450 bool evsel__is_function_event(struct evsel *evsel); 451 452 static inline bool evsel__is_bpf_output(struct evsel *evsel) 453 { 454 return evsel__match(evsel, SOFTWARE, SW_BPF_OUTPUT); 455 } 456 457 static inline bool evsel__is_clock(const struct evsel *evsel) 458 { 459 return evsel__match(evsel, SOFTWARE, SW_CPU_CLOCK) || 460 evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK); 461 } 462 463 bool evsel__fallback(struct evsel *evsel, struct target *target, int err, 464 char *msg, size_t msgsize); 465 int evsel__open_strerror(struct evsel *evsel, struct target *target, 466 int err, char *msg, size_t size); 467 468 static inline int evsel__group_idx(struct evsel *evsel) 469 { 470 return evsel->core.idx - evsel->core.leader->idx; 471 } 472 473 /* Iterates group WITHOUT the leader. */ 474 #define for_each_group_member_head(_evsel, _leader, _head) \ 475 for ((_evsel) = list_entry((_leader)->core.node.next, struct evsel, core.node); \ 476 (_evsel) && &(_evsel)->core.node != (_head) && \ 477 (_evsel)->core.leader == &(_leader)->core; \ 478 (_evsel) = list_entry((_evsel)->core.node.next, struct evsel, core.node)) 479 480 #define for_each_group_member(_evsel, _leader) \ 481 for_each_group_member_head(_evsel, _leader, &(_leader)->evlist->core.entries) 482 483 /* Iterates group WITH the leader. */ 484 #define for_each_group_evsel_head(_evsel, _leader, _head) \ 485 for ((_evsel) = _leader; \ 486 (_evsel) && &(_evsel)->core.node != (_head) && \ 487 (_evsel)->core.leader == &(_leader)->core; \ 488 (_evsel) = list_entry((_evsel)->core.node.next, struct evsel, core.node)) 489 490 #define for_each_group_evsel(_evsel, _leader) \ 491 for_each_group_evsel_head(_evsel, _leader, &(_leader)->evlist->core.entries) 492 493 static inline bool evsel__has_branch_callstack(const struct evsel *evsel) 494 { 495 return evsel->core.attr.branch_sample_type & PERF_SAMPLE_BRANCH_CALL_STACK; 496 } 497 498 static inline bool evsel__has_branch_hw_idx(const struct evsel *evsel) 499 { 500 return evsel->core.attr.branch_sample_type & PERF_SAMPLE_BRANCH_HW_INDEX; 501 } 502 503 static inline bool evsel__has_callchain(const struct evsel *evsel) 504 { 505 /* 506 * For reporting purposes, an evsel sample can have a recorded callchain 507 * or a callchain synthesized from AUX area data. 508 */ 509 return evsel->core.attr.sample_type & PERF_SAMPLE_CALLCHAIN || 510 evsel->synth_sample_type & PERF_SAMPLE_CALLCHAIN; 511 } 512 513 static inline bool evsel__has_br_stack(const struct evsel *evsel) 514 { 515 /* 516 * For reporting purposes, an evsel sample can have a recorded branch 517 * stack or a branch stack synthesized from AUX area data. 518 */ 519 return evsel->core.attr.sample_type & PERF_SAMPLE_BRANCH_STACK || 520 evsel->synth_sample_type & PERF_SAMPLE_BRANCH_STACK; 521 } 522 523 static inline bool evsel__is_dummy_event(struct evsel *evsel) 524 { 525 return (evsel->core.attr.type == PERF_TYPE_SOFTWARE) && 526 (evsel->core.attr.config == PERF_COUNT_SW_DUMMY); 527 } 528 529 struct perf_env *evsel__env(struct evsel *evsel); 530 531 int evsel__store_ids(struct evsel *evsel, struct evlist *evlist); 532 533 void evsel__zero_per_pkg(struct evsel *evsel); 534 bool evsel__is_hybrid(const struct evsel *evsel); 535 struct evsel *evsel__leader(const struct evsel *evsel); 536 bool evsel__has_leader(struct evsel *evsel, struct evsel *leader); 537 bool evsel__is_leader(struct evsel *evsel); 538 void evsel__set_leader(struct evsel *evsel, struct evsel *leader); 539 int evsel__source_count(const struct evsel *evsel); 540 void evsel__remove_from_group(struct evsel *evsel, struct evsel *leader); 541 542 bool arch_evsel__must_be_in_group(const struct evsel *evsel); 543 544 /* 545 * Macro to swap the bit-field postition and size. 546 * Used when, 547 * - dont need to swap the entire u64 && 548 * - when u64 has variable bit-field sizes && 549 * - when presented in a host endian which is different 550 * than the source endian of the perf.data file 551 */ 552 #define bitfield_swap(src, pos, size) \ 553 ((((src) >> (pos)) & ((1ull << (size)) - 1)) << (63 - ((pos) + (size) - 1))) 554 555 u64 evsel__bitfield_swap_branch_flags(u64 value); 556 void evsel__set_config_if_unset(struct perf_pmu *pmu, struct evsel *evsel, 557 const char *config_name, u64 val); 558 559 #endif /* __PERF_EVSEL_H */ 560