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 <stddef.h> 8 #include <linux/perf_event.h> 9 #include <linux/types.h> 10 #include <internal/evsel.h> 11 #include <internal/xyarray.h> 12 #include "symbol_conf.h" 13 #include "cpumap.h" 14 #include "counts.h" 15 16 struct evsel; 17 18 /* 19 * Per fd, to map back from PERF_SAMPLE_ID to evsel, only used when there are 20 * more than one entry in the evlist. 21 */ 22 struct perf_sample_id { 23 struct hlist_node node; 24 u64 id; 25 struct evsel *evsel; 26 /* 27 * 'idx' will be used for AUX area sampling. A sample will have AUX area 28 * data that will be queued for decoding, where there are separate 29 * queues for each CPU (per-cpu tracing) or task (per-thread tracing). 30 * The sample ID can be used to lookup 'idx' which is effectively the 31 * queue number. 32 */ 33 int idx; 34 int cpu; 35 pid_t tid; 36 37 /* Holds total ID period value for PERF_SAMPLE_READ processing. */ 38 u64 period; 39 }; 40 41 struct cgroup; 42 43 /* 44 * The 'struct perf_evsel_config_term' is used to pass event 45 * specific configuration data to perf_evsel__config routine. 46 * It is allocated within event parsing and attached to 47 * perf_evsel::config_terms list head. 48 */ 49 enum term_type { 50 PERF_EVSEL__CONFIG_TERM_PERIOD, 51 PERF_EVSEL__CONFIG_TERM_FREQ, 52 PERF_EVSEL__CONFIG_TERM_TIME, 53 PERF_EVSEL__CONFIG_TERM_CALLGRAPH, 54 PERF_EVSEL__CONFIG_TERM_STACK_USER, 55 PERF_EVSEL__CONFIG_TERM_INHERIT, 56 PERF_EVSEL__CONFIG_TERM_MAX_STACK, 57 PERF_EVSEL__CONFIG_TERM_MAX_EVENTS, 58 PERF_EVSEL__CONFIG_TERM_OVERWRITE, 59 PERF_EVSEL__CONFIG_TERM_DRV_CFG, 60 PERF_EVSEL__CONFIG_TERM_BRANCH, 61 PERF_EVSEL__CONFIG_TERM_PERCORE, 62 PERF_EVSEL__CONFIG_TERM_AUX_OUTPUT, 63 }; 64 65 struct perf_evsel_config_term { 66 struct list_head list; 67 enum term_type type; 68 union { 69 u64 period; 70 u64 freq; 71 bool time; 72 char *callgraph; 73 char *drv_cfg; 74 u64 stack_user; 75 int max_stack; 76 bool inherit; 77 bool overwrite; 78 char *branch; 79 unsigned long max_events; 80 bool percore; 81 bool aux_output; 82 } val; 83 bool weak; 84 }; 85 86 struct perf_stat_evsel; 87 88 typedef int (perf_evsel__sb_cb_t)(union perf_event *event, void *data); 89 90 enum perf_tool_event { 91 PERF_TOOL_NONE = 0, 92 PERF_TOOL_DURATION_TIME = 1, 93 }; 94 95 struct bpf_object; 96 97 /** struct evsel - event selector 98 * 99 * @evlist - evlist this evsel is in, if it is in one. 100 * @core - libperf evsel object 101 * @name - Can be set to retain the original event name passed by the user, 102 * so that when showing results in tools such as 'perf stat', we 103 * show the name used, not some alias. 104 * @id_pos: the position of the event id (PERF_SAMPLE_ID or 105 * PERF_SAMPLE_IDENTIFIER) in a sample event i.e. in the array of 106 * struct sample_event 107 * @is_pos: the position (counting backwards) of the event id (PERF_SAMPLE_ID or 108 * PERF_SAMPLE_IDENTIFIER) in a non-sample event i.e. if sample_id_all 109 * is used there is an id sample appended to non-sample events 110 * @priv: And what is in its containing unnamed union are tool specific 111 */ 112 struct evsel { 113 struct perf_evsel core; 114 struct evlist *evlist; 115 char *filter; 116 struct xyarray *sample_id; 117 u64 *id; 118 struct perf_counts *counts; 119 struct perf_counts *prev_raw_counts; 120 int idx; 121 u32 ids; 122 unsigned long max_events; 123 unsigned long nr_events_printed; 124 char *name; 125 double scale; 126 const char *unit; 127 struct tep_event *tp_format; 128 off_t id_offset; 129 struct perf_stat_evsel *stats; 130 void *priv; 131 u64 db_id; 132 struct cgroup *cgrp; 133 void *handler; 134 unsigned int sample_size; 135 int id_pos; 136 int is_pos; 137 enum perf_tool_event tool_event; 138 bool uniquified_name; 139 bool snapshot; 140 bool supported; 141 bool needs_swap; 142 bool disabled; 143 bool no_aux_samples; 144 bool immediate; 145 bool system_wide; 146 bool tracking; 147 bool per_pkg; 148 bool precise_max; 149 bool ignore_missing_thread; 150 bool forced_leader; 151 bool use_uncore_alias; 152 /* parse modifier helper */ 153 int exclude_GH; 154 int sample_read; 155 unsigned long *per_pkg_mask; 156 struct evsel *leader; 157 char *group_name; 158 bool cmdline_group_boundary; 159 struct list_head config_terms; 160 struct bpf_object *bpf_obj; 161 int bpf_fd; 162 bool auto_merge_stats; 163 bool merged_stat; 164 const char * metric_expr; 165 const char * metric_name; 166 struct evsel **metric_events; 167 bool collect_stat; 168 bool weak_group; 169 bool percore; 170 const char *pmu_name; 171 struct { 172 perf_evsel__sb_cb_t *cb; 173 void *data; 174 } side_band; 175 }; 176 177 union u64_swap { 178 u64 val64; 179 u32 val32[2]; 180 }; 181 182 struct perf_missing_features { 183 bool sample_id_all; 184 bool exclude_guest; 185 bool mmap2; 186 bool cloexec; 187 bool clockid; 188 bool clockid_wrong; 189 bool lbr_flags; 190 bool write_backward; 191 bool group_read; 192 bool ksymbol; 193 bool bpf_event; 194 bool aux_output; 195 }; 196 197 extern struct perf_missing_features perf_missing_features; 198 199 struct perf_cpu_map; 200 struct target; 201 struct thread_map; 202 struct record_opts; 203 204 static inline struct perf_cpu_map *evsel__cpus(struct evsel *evsel) 205 { 206 return perf_evsel__cpus(&evsel->core); 207 } 208 209 static inline int perf_evsel__nr_cpus(struct evsel *evsel) 210 { 211 return evsel__cpus(evsel)->nr; 212 } 213 214 void perf_counts_values__scale(struct perf_counts_values *count, 215 bool scale, s8 *pscaled); 216 217 void perf_evsel__compute_deltas(struct evsel *evsel, int cpu, int thread, 218 struct perf_counts_values *count); 219 220 int perf_evsel__object_config(size_t object_size, 221 int (*init)(struct evsel *evsel), 222 void (*fini)(struct evsel *evsel)); 223 224 struct evsel *perf_evsel__new_idx(struct perf_event_attr *attr, int idx); 225 226 static inline struct evsel *evsel__new(struct perf_event_attr *attr) 227 { 228 return perf_evsel__new_idx(attr, 0); 229 } 230 231 struct evsel *perf_evsel__newtp_idx(const char *sys, const char *name, int idx); 232 233 /* 234 * Returns pointer with encoded error via <linux/err.h> interface. 235 */ 236 static inline struct evsel *perf_evsel__newtp(const char *sys, const char *name) 237 { 238 return perf_evsel__newtp_idx(sys, name, 0); 239 } 240 241 struct evsel *perf_evsel__new_cycles(bool precise); 242 243 struct tep_event *event_format__new(const char *sys, const char *name); 244 245 void evsel__init(struct evsel *evsel, struct perf_event_attr *attr, int idx); 246 void perf_evsel__exit(struct evsel *evsel); 247 void evsel__delete(struct evsel *evsel); 248 249 struct callchain_param; 250 251 void perf_evsel__config(struct evsel *evsel, 252 struct record_opts *opts, 253 struct callchain_param *callchain); 254 void perf_evsel__config_callchain(struct evsel *evsel, 255 struct record_opts *opts, 256 struct callchain_param *callchain); 257 258 int __perf_evsel__sample_size(u64 sample_type); 259 void perf_evsel__calc_id_pos(struct evsel *evsel); 260 261 bool perf_evsel__is_cache_op_valid(u8 type, u8 op); 262 263 #define PERF_EVSEL__MAX_ALIASES 8 264 265 extern const char *perf_evsel__hw_cache[PERF_COUNT_HW_CACHE_MAX] 266 [PERF_EVSEL__MAX_ALIASES]; 267 extern const char *perf_evsel__hw_cache_op[PERF_COUNT_HW_CACHE_OP_MAX] 268 [PERF_EVSEL__MAX_ALIASES]; 269 extern const char *perf_evsel__hw_cache_result[PERF_COUNT_HW_CACHE_RESULT_MAX] 270 [PERF_EVSEL__MAX_ALIASES]; 271 extern const char *perf_evsel__hw_names[PERF_COUNT_HW_MAX]; 272 extern const char *perf_evsel__sw_names[PERF_COUNT_SW_MAX]; 273 int __perf_evsel__hw_cache_type_op_res_name(u8 type, u8 op, u8 result, 274 char *bf, size_t size); 275 const char *perf_evsel__name(struct evsel *evsel); 276 277 const char *perf_evsel__group_name(struct evsel *evsel); 278 int perf_evsel__group_desc(struct evsel *evsel, char *buf, size_t size); 279 280 int perf_evsel__alloc_id(struct evsel *evsel, int ncpus, int nthreads); 281 282 void __perf_evsel__set_sample_bit(struct evsel *evsel, 283 enum perf_event_sample_format bit); 284 void __perf_evsel__reset_sample_bit(struct evsel *evsel, 285 enum perf_event_sample_format bit); 286 287 #define perf_evsel__set_sample_bit(evsel, bit) \ 288 __perf_evsel__set_sample_bit(evsel, PERF_SAMPLE_##bit) 289 290 #define perf_evsel__reset_sample_bit(evsel, bit) \ 291 __perf_evsel__reset_sample_bit(evsel, PERF_SAMPLE_##bit) 292 293 void perf_evsel__set_sample_id(struct evsel *evsel, 294 bool use_sample_identifier); 295 296 int perf_evsel__set_filter(struct evsel *evsel, const char *filter); 297 int perf_evsel__append_tp_filter(struct evsel *evsel, const char *filter); 298 int perf_evsel__append_addr_filter(struct evsel *evsel, 299 const char *filter); 300 int evsel__enable(struct evsel *evsel); 301 int evsel__disable(struct evsel *evsel); 302 303 int perf_evsel__open_per_cpu(struct evsel *evsel, 304 struct perf_cpu_map *cpus); 305 int perf_evsel__open_per_thread(struct evsel *evsel, 306 struct perf_thread_map *threads); 307 int evsel__open(struct evsel *evsel, struct perf_cpu_map *cpus, 308 struct perf_thread_map *threads); 309 void evsel__close(struct evsel *evsel); 310 311 struct perf_sample; 312 313 void *perf_evsel__rawptr(struct evsel *evsel, struct perf_sample *sample, 314 const char *name); 315 u64 perf_evsel__intval(struct evsel *evsel, struct perf_sample *sample, 316 const char *name); 317 318 static inline char *perf_evsel__strval(struct evsel *evsel, 319 struct perf_sample *sample, 320 const char *name) 321 { 322 return perf_evsel__rawptr(evsel, sample, name); 323 } 324 325 struct tep_format_field; 326 327 u64 format_field__intval(struct tep_format_field *field, struct perf_sample *sample, bool needs_swap); 328 329 struct tep_format_field *perf_evsel__field(struct evsel *evsel, const char *name); 330 331 #define perf_evsel__match(evsel, t, c) \ 332 (evsel->core.attr.type == PERF_TYPE_##t && \ 333 evsel->core.attr.config == PERF_COUNT_##c) 334 335 static inline bool perf_evsel__match2(struct evsel *e1, 336 struct evsel *e2) 337 { 338 return (e1->core.attr.type == e2->core.attr.type) && 339 (e1->core.attr.config == e2->core.attr.config); 340 } 341 342 #define perf_evsel__cmp(a, b) \ 343 ((a) && \ 344 (b) && \ 345 (a)->core.attr.type == (b)->core.attr.type && \ 346 (a)->core.attr.config == (b)->core.attr.config) 347 348 int perf_evsel__read_counter(struct evsel *evsel, int cpu, int thread); 349 350 int __perf_evsel__read_on_cpu(struct evsel *evsel, 351 int cpu, int thread, bool scale); 352 353 /** 354 * perf_evsel__read_on_cpu - Read out the results on a CPU and thread 355 * 356 * @evsel - event selector to read value 357 * @cpu - CPU of interest 358 * @thread - thread of interest 359 */ 360 static inline int perf_evsel__read_on_cpu(struct evsel *evsel, 361 int cpu, int thread) 362 { 363 return __perf_evsel__read_on_cpu(evsel, cpu, thread, false); 364 } 365 366 /** 367 * perf_evsel__read_on_cpu_scaled - Read out the results on a CPU and thread, scaled 368 * 369 * @evsel - event selector to read value 370 * @cpu - CPU of interest 371 * @thread - thread of interest 372 */ 373 static inline int perf_evsel__read_on_cpu_scaled(struct evsel *evsel, 374 int cpu, int thread) 375 { 376 return __perf_evsel__read_on_cpu(evsel, cpu, thread, true); 377 } 378 379 int perf_evsel__parse_sample(struct evsel *evsel, union perf_event *event, 380 struct perf_sample *sample); 381 382 int perf_evsel__parse_sample_timestamp(struct evsel *evsel, 383 union perf_event *event, 384 u64 *timestamp); 385 386 static inline struct evsel *perf_evsel__next(struct evsel *evsel) 387 { 388 return list_entry(evsel->core.node.next, struct evsel, core.node); 389 } 390 391 static inline struct evsel *perf_evsel__prev(struct evsel *evsel) 392 { 393 return list_entry(evsel->core.node.prev, struct evsel, core.node); 394 } 395 396 /** 397 * perf_evsel__is_group_leader - Return whether given evsel is a leader event 398 * 399 * @evsel - evsel selector to be tested 400 * 401 * Return %true if @evsel is a group leader or a stand-alone event 402 */ 403 static inline bool perf_evsel__is_group_leader(const struct evsel *evsel) 404 { 405 return evsel->leader == evsel; 406 } 407 408 /** 409 * perf_evsel__is_group_event - Return whether given evsel is a group event 410 * 411 * @evsel - evsel selector to be tested 412 * 413 * Return %true iff event group view is enabled and @evsel is a actual group 414 * leader which has other members in the group 415 */ 416 static inline bool perf_evsel__is_group_event(struct evsel *evsel) 417 { 418 if (!symbol_conf.event_group) 419 return false; 420 421 return perf_evsel__is_group_leader(evsel) && evsel->core.nr_members > 1; 422 } 423 424 bool perf_evsel__is_function_event(struct evsel *evsel); 425 426 static inline bool perf_evsel__is_bpf_output(struct evsel *evsel) 427 { 428 return perf_evsel__match(evsel, SOFTWARE, SW_BPF_OUTPUT); 429 } 430 431 static inline bool perf_evsel__is_clock(struct evsel *evsel) 432 { 433 return perf_evsel__match(evsel, SOFTWARE, SW_CPU_CLOCK) || 434 perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK); 435 } 436 437 struct perf_attr_details { 438 bool freq; 439 bool verbose; 440 bool event_group; 441 bool force; 442 bool trace_fields; 443 }; 444 445 int perf_evsel__fprintf(struct evsel *evsel, 446 struct perf_attr_details *details, FILE *fp); 447 448 #define EVSEL__PRINT_IP (1<<0) 449 #define EVSEL__PRINT_SYM (1<<1) 450 #define EVSEL__PRINT_DSO (1<<2) 451 #define EVSEL__PRINT_SYMOFFSET (1<<3) 452 #define EVSEL__PRINT_ONELINE (1<<4) 453 #define EVSEL__PRINT_SRCLINE (1<<5) 454 #define EVSEL__PRINT_UNKNOWN_AS_ADDR (1<<6) 455 #define EVSEL__PRINT_CALLCHAIN_ARROW (1<<7) 456 #define EVSEL__PRINT_SKIP_IGNORED (1<<8) 457 458 struct callchain_cursor; 459 460 int sample__fprintf_callchain(struct perf_sample *sample, int left_alignment, 461 unsigned int print_opts, 462 struct callchain_cursor *cursor, FILE *fp); 463 464 int sample__fprintf_sym(struct perf_sample *sample, struct addr_location *al, 465 int left_alignment, unsigned int print_opts, 466 struct callchain_cursor *cursor, FILE *fp); 467 468 bool perf_evsel__fallback(struct evsel *evsel, int err, 469 char *msg, size_t msgsize); 470 int perf_evsel__open_strerror(struct evsel *evsel, struct target *target, 471 int err, char *msg, size_t size); 472 473 static inline int perf_evsel__group_idx(struct evsel *evsel) 474 { 475 return evsel->idx - evsel->leader->idx; 476 } 477 478 /* Iterates group WITHOUT the leader. */ 479 #define for_each_group_member(_evsel, _leader) \ 480 for ((_evsel) = list_entry((_leader)->core.node.next, struct evsel, core.node); \ 481 (_evsel) && (_evsel)->leader == (_leader); \ 482 (_evsel) = list_entry((_evsel)->core.node.next, struct evsel, core.node)) 483 484 /* Iterates group WITH the leader. */ 485 #define for_each_group_evsel(_evsel, _leader) \ 486 for ((_evsel) = _leader; \ 487 (_evsel) && (_evsel)->leader == (_leader); \ 488 (_evsel) = list_entry((_evsel)->core.node.next, struct evsel, core.node)) 489 490 static inline bool perf_evsel__has_branch_callstack(const struct evsel *evsel) 491 { 492 return evsel->core.attr.branch_sample_type & PERF_SAMPLE_BRANCH_CALL_STACK; 493 } 494 495 static inline bool evsel__has_callchain(const struct evsel *evsel) 496 { 497 return (evsel->core.attr.sample_type & PERF_SAMPLE_CALLCHAIN) != 0; 498 } 499 500 typedef int (*attr__fprintf_f)(FILE *, const char *, const char *, void *); 501 502 int perf_event_attr__fprintf(FILE *fp, struct perf_event_attr *attr, 503 attr__fprintf_f attr__fprintf, void *priv); 504 505 struct perf_env *perf_evsel__env(struct evsel *evsel); 506 507 int perf_evsel__store_ids(struct evsel *evsel, struct evlist *evlist); 508 #endif /* __PERF_EVSEL_H */ 509