1 // SPDX-License-Identifier: GPL-2.0 2 #include <linux/hw_breakpoint.h> 3 #include <linux/err.h> 4 #include <linux/list_sort.h> 5 #include <linux/zalloc.h> 6 #include <dirent.h> 7 #include <errno.h> 8 #include <sys/ioctl.h> 9 #include <sys/param.h> 10 #include "cpumap.h" 11 #include "term.h" 12 #include "env.h" 13 #include "evlist.h" 14 #include "evsel.h" 15 #include <subcmd/parse-options.h> 16 #include "parse-events.h" 17 #include "string2.h" 18 #include "strbuf.h" 19 #include "debug.h" 20 #include <perf/cpumap.h> 21 #include <util/parse-events-bison.h> 22 #include <util/parse-events-flex.h> 23 #include "pmu.h" 24 #include "pmus.h" 25 #include "tp_pmu.h" 26 #include "asm/bug.h" 27 #include "ui/ui.h" 28 #include "util/parse-branch-options.h" 29 #include "util/evsel_config.h" 30 #include "util/event.h" 31 #include "util/bpf-filter.h" 32 #include "util/stat.h" 33 #include "util/util.h" 34 #include "tracepoint.h" 35 #include <api/fs/tracing_path.h> 36 37 #define MAX_NAME_LEN 100 38 39 static int get_config_terms(const struct parse_events_terms *head_config, 40 struct list_head *head_terms); 41 static int parse_events_terms__copy(const struct parse_events_terms *src, 42 struct parse_events_terms *dest); 43 44 const struct event_symbol event_symbols_hw[PERF_COUNT_HW_MAX] = { 45 [PERF_COUNT_HW_CPU_CYCLES] = { 46 .symbol = "cpu-cycles", 47 .alias = "cycles", 48 }, 49 [PERF_COUNT_HW_INSTRUCTIONS] = { 50 .symbol = "instructions", 51 .alias = "", 52 }, 53 [PERF_COUNT_HW_CACHE_REFERENCES] = { 54 .symbol = "cache-references", 55 .alias = "", 56 }, 57 [PERF_COUNT_HW_CACHE_MISSES] = { 58 .symbol = "cache-misses", 59 .alias = "", 60 }, 61 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = { 62 .symbol = "branch-instructions", 63 .alias = "branches", 64 }, 65 [PERF_COUNT_HW_BRANCH_MISSES] = { 66 .symbol = "branch-misses", 67 .alias = "", 68 }, 69 [PERF_COUNT_HW_BUS_CYCLES] = { 70 .symbol = "bus-cycles", 71 .alias = "", 72 }, 73 [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = { 74 .symbol = "stalled-cycles-frontend", 75 .alias = "idle-cycles-frontend", 76 }, 77 [PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = { 78 .symbol = "stalled-cycles-backend", 79 .alias = "idle-cycles-backend", 80 }, 81 [PERF_COUNT_HW_REF_CPU_CYCLES] = { 82 .symbol = "ref-cycles", 83 .alias = "", 84 }, 85 }; 86 87 static const char *const event_types[] = { 88 [PERF_TYPE_HARDWARE] = "hardware", 89 [PERF_TYPE_SOFTWARE] = "software", 90 [PERF_TYPE_TRACEPOINT] = "tracepoint", 91 [PERF_TYPE_HW_CACHE] = "hardware-cache", 92 [PERF_TYPE_RAW] = "raw", 93 [PERF_TYPE_BREAKPOINT] = "breakpoint", 94 }; 95 96 const char *event_type(size_t type) 97 { 98 if (type >= PERF_TYPE_MAX) 99 return "unknown"; 100 101 return event_types[type]; 102 } 103 104 static char *get_config_str(const struct parse_events_terms *head_terms, 105 enum parse_events__term_type type_term) 106 { 107 struct parse_events_term *term; 108 109 if (!head_terms) 110 return NULL; 111 112 list_for_each_entry(term, &head_terms->terms, list) 113 if (term->type_term == type_term) 114 return term->val.str; 115 116 return NULL; 117 } 118 119 static char *get_config_metric_id(const struct parse_events_terms *head_terms) 120 { 121 return get_config_str(head_terms, PARSE_EVENTS__TERM_TYPE_METRIC_ID); 122 } 123 124 static char *get_config_name(const struct parse_events_terms *head_terms) 125 { 126 return get_config_str(head_terms, PARSE_EVENTS__TERM_TYPE_NAME); 127 } 128 129 static struct perf_cpu_map *get_config_cpu(const struct parse_events_terms *head_terms, 130 bool fake_pmu) 131 { 132 struct parse_events_term *term; 133 struct perf_cpu_map *cpus = NULL; 134 135 if (!head_terms) 136 return NULL; 137 138 list_for_each_entry(term, &head_terms->terms, list) { 139 struct perf_cpu_map *term_cpus; 140 141 if (term->type_term != PARSE_EVENTS__TERM_TYPE_CPU) 142 continue; 143 144 if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) { 145 term_cpus = perf_cpu_map__new_int(term->val.num); 146 } else { 147 struct perf_pmu *pmu = perf_pmus__find(term->val.str); 148 149 if (pmu) { 150 term_cpus = pmu->is_core && perf_cpu_map__is_empty(pmu->cpus) 151 ? cpu_map__online() 152 : perf_cpu_map__get(pmu->cpus); 153 } else { 154 term_cpus = perf_cpu_map__new(term->val.str); 155 if (!term_cpus && fake_pmu) { 156 /* 157 * Assume the PMU string makes sense on a different 158 * machine and fake a value with all online CPUs. 159 */ 160 term_cpus = cpu_map__online(); 161 } 162 } 163 } 164 perf_cpu_map__merge(&cpus, term_cpus); 165 perf_cpu_map__put(term_cpus); 166 } 167 168 return cpus; 169 } 170 171 /** 172 * fix_raw - For each raw term see if there is an event (aka alias) in pmu that 173 * matches the raw's string value. If the string value matches an 174 * event then change the term to be an event, if not then change it to 175 * be a config term. For example, "read" may be an event of the PMU or 176 * a raw hex encoding of 0xead. The fix-up is done late so the PMU of 177 * the event can be determined and we don't need to scan all PMUs 178 * ahead-of-time. 179 * @config_terms: the list of terms that may contain a raw term. 180 * @pmu: the PMU to scan for events from. 181 */ 182 static void fix_raw(struct parse_events_terms *config_terms, struct perf_pmu *pmu) 183 { 184 struct parse_events_term *term; 185 186 list_for_each_entry(term, &config_terms->terms, list) { 187 u64 num; 188 189 if (term->type_term != PARSE_EVENTS__TERM_TYPE_RAW) 190 continue; 191 192 if (perf_pmu__have_event(pmu, term->val.str)) { 193 zfree(&term->config); 194 term->config = term->val.str; 195 term->type_val = PARSE_EVENTS__TERM_TYPE_NUM; 196 term->type_term = PARSE_EVENTS__TERM_TYPE_USER; 197 term->val.num = 1; 198 term->no_value = true; 199 continue; 200 } 201 202 zfree(&term->config); 203 term->config = strdup("config"); 204 errno = 0; 205 num = strtoull(term->val.str + 1, NULL, 16); 206 assert(errno == 0); 207 free(term->val.str); 208 term->type_val = PARSE_EVENTS__TERM_TYPE_NUM; 209 term->type_term = PARSE_EVENTS__TERM_TYPE_CONFIG; 210 term->val.num = num; 211 term->no_value = false; 212 } 213 } 214 215 static struct evsel * 216 __add_event(struct list_head *list, int *idx, 217 struct perf_event_attr *attr, 218 bool init_attr, 219 const char *name, const char *metric_id, struct perf_pmu *pmu, 220 struct list_head *config_terms, struct evsel *first_wildcard_match, 221 struct perf_cpu_map *user_cpus, u64 alternate_hw_config) 222 { 223 struct evsel *evsel; 224 bool is_pmu_core; 225 struct perf_cpu_map *cpus, *pmu_cpus; 226 bool has_user_cpus = !perf_cpu_map__is_empty(user_cpus); 227 228 /* 229 * Ensure the first_wildcard_match's PMU matches that of the new event 230 * being added. Otherwise try to match with another event further down 231 * the evlist. 232 */ 233 if (first_wildcard_match) { 234 struct evsel *pos = list_prev_entry(first_wildcard_match, core.node); 235 236 first_wildcard_match = NULL; 237 list_for_each_entry_continue(pos, list, core.node) { 238 if (perf_pmu__name_no_suffix_match(pos->pmu, pmu->name)) { 239 first_wildcard_match = pos; 240 break; 241 } 242 if (pos->pmu->is_core && (!pmu || pmu->is_core)) { 243 first_wildcard_match = pos; 244 break; 245 } 246 } 247 } 248 249 if (pmu) { 250 perf_pmu__warn_invalid_formats(pmu); 251 if (attr->type == PERF_TYPE_RAW || attr->type >= PERF_TYPE_MAX) { 252 perf_pmu__warn_invalid_config(pmu, attr->config, name, 253 PERF_PMU_FORMAT_VALUE_CONFIG, "config"); 254 perf_pmu__warn_invalid_config(pmu, attr->config1, name, 255 PERF_PMU_FORMAT_VALUE_CONFIG1, "config1"); 256 perf_pmu__warn_invalid_config(pmu, attr->config2, name, 257 PERF_PMU_FORMAT_VALUE_CONFIG2, "config2"); 258 perf_pmu__warn_invalid_config(pmu, attr->config3, name, 259 PERF_PMU_FORMAT_VALUE_CONFIG3, "config3"); 260 } 261 } 262 /* 263 * If a PMU wasn't given, such as for legacy events, find now that 264 * warnings won't be generated. 265 */ 266 if (!pmu) 267 pmu = perf_pmus__find_by_attr(attr); 268 269 if (pmu) { 270 is_pmu_core = pmu->is_core; 271 pmu_cpus = perf_cpu_map__get(pmu->cpus); 272 if (perf_cpu_map__is_empty(pmu_cpus)) 273 pmu_cpus = cpu_map__online(); 274 } else { 275 is_pmu_core = (attr->type == PERF_TYPE_HARDWARE || 276 attr->type == PERF_TYPE_HW_CACHE); 277 pmu_cpus = is_pmu_core ? cpu_map__online() : NULL; 278 } 279 280 if (has_user_cpus) 281 cpus = perf_cpu_map__get(user_cpus); 282 else 283 cpus = perf_cpu_map__get(pmu_cpus); 284 285 if (init_attr) 286 event_attr_init(attr); 287 288 evsel = evsel__new_idx(attr, *idx); 289 if (!evsel) 290 goto out_err; 291 292 if (name) { 293 evsel->name = strdup(name); 294 if (!evsel->name) 295 goto out_err; 296 } 297 298 if (metric_id) { 299 evsel->metric_id = strdup(metric_id); 300 if (!evsel->metric_id) 301 goto out_err; 302 } 303 304 (*idx)++; 305 evsel->core.cpus = cpus; 306 evsel->core.pmu_cpus = pmu_cpus; 307 evsel->core.requires_cpu = pmu ? pmu->is_uncore : false; 308 evsel->core.is_pmu_core = is_pmu_core; 309 evsel->pmu = pmu; 310 evsel->alternate_hw_config = alternate_hw_config; 311 evsel->first_wildcard_match = first_wildcard_match; 312 313 if (config_terms) 314 list_splice_init(config_terms, &evsel->config_terms); 315 316 if (list) 317 list_add_tail(&evsel->core.node, list); 318 319 if (has_user_cpus) 320 evsel__warn_user_requested_cpus(evsel, user_cpus); 321 322 return evsel; 323 out_err: 324 perf_cpu_map__put(cpus); 325 perf_cpu_map__put(pmu_cpus); 326 zfree(&evsel->name); 327 zfree(&evsel->metric_id); 328 free(evsel); 329 return NULL; 330 } 331 332 struct evsel *parse_events__add_event(int idx, struct perf_event_attr *attr, 333 const char *name, const char *metric_id, 334 struct perf_pmu *pmu) 335 { 336 return __add_event(/*list=*/NULL, &idx, attr, /*init_attr=*/false, name, 337 metric_id, pmu, /*config_terms=*/NULL, 338 /*first_wildcard_match=*/NULL, /*cpu_list=*/NULL, 339 /*alternate_hw_config=*/PERF_COUNT_HW_MAX); 340 } 341 342 static int add_event(struct list_head *list, int *idx, 343 struct perf_event_attr *attr, const char *name, 344 const char *metric_id, struct list_head *config_terms, 345 u64 alternate_hw_config) 346 { 347 return __add_event(list, idx, attr, /*init_attr*/true, name, metric_id, 348 /*pmu=*/NULL, config_terms, 349 /*first_wildcard_match=*/NULL, /*cpu_list=*/NULL, 350 alternate_hw_config) ? 0 : -ENOMEM; 351 } 352 353 /** 354 * parse_aliases - search names for entries beginning or equalling str ignoring 355 * case. If mutliple entries in names match str then the longest 356 * is chosen. 357 * @str: The needle to look for. 358 * @names: The haystack to search. 359 * @size: The size of the haystack. 360 * @longest: Out argument giving the length of the matching entry. 361 */ 362 static int parse_aliases(const char *str, const char *const names[][EVSEL__MAX_ALIASES], int size, 363 int *longest) 364 { 365 *longest = -1; 366 for (int i = 0; i < size; i++) { 367 for (int j = 0; j < EVSEL__MAX_ALIASES && names[i][j]; j++) { 368 int n = strlen(names[i][j]); 369 370 if (n > *longest && !strncasecmp(str, names[i][j], n)) 371 *longest = n; 372 } 373 if (*longest > 0) 374 return i; 375 } 376 377 return -1; 378 } 379 380 typedef int config_term_func_t(struct perf_event_attr *attr, 381 struct parse_events_term *term, 382 struct parse_events_state *parse_state); 383 static int config_term_common(struct perf_event_attr *attr, 384 struct parse_events_term *term, 385 struct parse_events_state *parse_state); 386 static int config_attr(struct perf_event_attr *attr, 387 const struct parse_events_terms *head, 388 struct parse_events_state *parse_state, 389 config_term_func_t config_term); 390 391 /** 392 * parse_events__decode_legacy_cache - Search name for the legacy cache event 393 * name composed of 1, 2 or 3 hyphen 394 * separated sections. The first section is 395 * the cache type while the others are the 396 * optional op and optional result. To make 397 * life hard the names in the table also 398 * contain hyphens and the longest name 399 * should always be selected. 400 */ 401 int parse_events__decode_legacy_cache(const char *name, int extended_pmu_type, __u64 *config) 402 { 403 int len, cache_type = -1, cache_op = -1, cache_result = -1; 404 const char *name_end = &name[strlen(name) + 1]; 405 const char *str = name; 406 407 cache_type = parse_aliases(str, evsel__hw_cache, PERF_COUNT_HW_CACHE_MAX, &len); 408 if (cache_type == -1) 409 return -EINVAL; 410 str += len + 1; 411 412 if (str < name_end) { 413 cache_op = parse_aliases(str, evsel__hw_cache_op, 414 PERF_COUNT_HW_CACHE_OP_MAX, &len); 415 if (cache_op >= 0) { 416 if (!evsel__is_cache_op_valid(cache_type, cache_op)) 417 return -EINVAL; 418 str += len + 1; 419 } else { 420 cache_result = parse_aliases(str, evsel__hw_cache_result, 421 PERF_COUNT_HW_CACHE_RESULT_MAX, &len); 422 if (cache_result >= 0) 423 str += len + 1; 424 } 425 } 426 if (str < name_end) { 427 if (cache_op < 0) { 428 cache_op = parse_aliases(str, evsel__hw_cache_op, 429 PERF_COUNT_HW_CACHE_OP_MAX, &len); 430 if (cache_op >= 0) { 431 if (!evsel__is_cache_op_valid(cache_type, cache_op)) 432 return -EINVAL; 433 } 434 } else if (cache_result < 0) { 435 cache_result = parse_aliases(str, evsel__hw_cache_result, 436 PERF_COUNT_HW_CACHE_RESULT_MAX, &len); 437 } 438 } 439 440 /* 441 * Fall back to reads: 442 */ 443 if (cache_op == -1) 444 cache_op = PERF_COUNT_HW_CACHE_OP_READ; 445 446 /* 447 * Fall back to accesses: 448 */ 449 if (cache_result == -1) 450 cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS; 451 452 *config = cache_type | (cache_op << 8) | (cache_result << 16); 453 if (perf_pmus__supports_extended_type()) 454 *config |= (__u64)extended_pmu_type << PERF_PMU_TYPE_SHIFT; 455 return 0; 456 } 457 458 /** 459 * parse_events__filter_pmu - returns false if a wildcard PMU should be 460 * considered, true if it should be filtered. 461 */ 462 bool parse_events__filter_pmu(const struct parse_events_state *parse_state, 463 const struct perf_pmu *pmu) 464 { 465 if (parse_state->pmu_filter == NULL) 466 return false; 467 468 return strcmp(parse_state->pmu_filter, pmu->name) != 0; 469 } 470 471 static int parse_events_add_pmu(struct parse_events_state *parse_state, 472 struct list_head *list, struct perf_pmu *pmu, 473 const struct parse_events_terms *const_parsed_terms, 474 struct evsel *first_wildcard_match, u64 alternate_hw_config); 475 476 int parse_events_add_cache(struct list_head *list, int *idx, const char *name, 477 struct parse_events_state *parse_state, 478 struct parse_events_terms *parsed_terms) 479 { 480 struct perf_pmu *pmu = NULL; 481 bool found_supported = false; 482 const char *config_name = get_config_name(parsed_terms); 483 const char *metric_id = get_config_metric_id(parsed_terms); 484 struct perf_cpu_map *cpus = get_config_cpu(parsed_terms, parse_state->fake_pmu); 485 int ret = 0; 486 struct evsel *first_wildcard_match = NULL; 487 488 while ((pmu = perf_pmus__scan_for_event(pmu, name)) != NULL) { 489 LIST_HEAD(config_terms); 490 struct perf_event_attr attr; 491 492 if (parse_events__filter_pmu(parse_state, pmu)) 493 continue; 494 495 if (perf_pmu__have_event(pmu, name)) { 496 /* 497 * The PMU has the event so add as not a legacy cache 498 * event. 499 */ 500 ret = parse_events_add_pmu(parse_state, list, pmu, 501 parsed_terms, 502 first_wildcard_match, 503 /*alternate_hw_config=*/PERF_COUNT_HW_MAX); 504 if (ret) 505 goto out_err; 506 if (first_wildcard_match == NULL) 507 first_wildcard_match = 508 container_of(list->prev, struct evsel, core.node); 509 continue; 510 } 511 512 if (!pmu->is_core) { 513 /* Legacy cache events are only supported by core PMUs. */ 514 continue; 515 } 516 517 memset(&attr, 0, sizeof(attr)); 518 attr.type = PERF_TYPE_HW_CACHE; 519 520 ret = parse_events__decode_legacy_cache(name, pmu->type, &attr.config); 521 if (ret) 522 return ret; 523 524 found_supported = true; 525 526 if (parsed_terms) { 527 if (config_attr(&attr, parsed_terms, parse_state, config_term_common)) { 528 ret = -EINVAL; 529 goto out_err; 530 } 531 if (get_config_terms(parsed_terms, &config_terms)) { 532 ret = -ENOMEM; 533 goto out_err; 534 } 535 } 536 537 if (__add_event(list, idx, &attr, /*init_attr*/true, config_name ?: name, 538 metric_id, pmu, &config_terms, first_wildcard_match, 539 cpus, /*alternate_hw_config=*/PERF_COUNT_HW_MAX) == NULL) 540 ret = -ENOMEM; 541 542 if (first_wildcard_match == NULL) 543 first_wildcard_match = container_of(list->prev, struct evsel, core.node); 544 free_config_terms(&config_terms); 545 if (ret) 546 goto out_err; 547 } 548 out_err: 549 perf_cpu_map__put(cpus); 550 return found_supported ? 0 : -EINVAL; 551 } 552 553 static void tracepoint_error(struct parse_events_error *e, int err, 554 const char *sys, const char *name, int column) 555 { 556 const char *str; 557 char help[BUFSIZ]; 558 559 if (!e) 560 return; 561 562 /* 563 * We get error directly from syscall errno ( > 0), 564 * or from encoded pointer's error ( < 0). 565 */ 566 err = abs(err); 567 568 switch (err) { 569 case EACCES: 570 str = "can't access trace events"; 571 break; 572 case ENOENT: 573 str = "unknown tracepoint"; 574 break; 575 default: 576 str = "failed to add tracepoint"; 577 break; 578 } 579 580 tracing_path__strerror_open_tp(err, help, sizeof(help), sys, name); 581 parse_events_error__handle(e, column, strdup(str), strdup(help)); 582 } 583 584 static int add_tracepoint(struct parse_events_state *parse_state, 585 struct list_head *list, 586 const char *sys_name, const char *evt_name, 587 struct parse_events_error *err, 588 struct parse_events_terms *head_config, void *loc_) 589 { 590 YYLTYPE *loc = loc_; 591 struct evsel *evsel = evsel__newtp_idx(sys_name, evt_name, parse_state->idx++, 592 !parse_state->fake_tp); 593 594 if (IS_ERR(evsel)) { 595 tracepoint_error(err, PTR_ERR(evsel), sys_name, evt_name, loc->first_column); 596 return PTR_ERR(evsel); 597 } 598 599 if (head_config) { 600 LIST_HEAD(config_terms); 601 602 if (get_config_terms(head_config, &config_terms)) 603 return -ENOMEM; 604 list_splice(&config_terms, &evsel->config_terms); 605 } 606 607 list_add_tail(&evsel->core.node, list); 608 return 0; 609 } 610 611 struct add_tracepoint_multi_args { 612 struct parse_events_state *parse_state; 613 struct list_head *list; 614 const char *sys_glob; 615 const char *evt_glob; 616 struct parse_events_error *err; 617 struct parse_events_terms *head_config; 618 YYLTYPE *loc; 619 int found; 620 }; 621 622 static int add_tracepoint_multi_event_cb(void *state, const char *sys_name, const char *evt_name) 623 { 624 struct add_tracepoint_multi_args *args = state; 625 int ret; 626 627 if (!strglobmatch(evt_name, args->evt_glob)) 628 return 0; 629 630 args->found++; 631 ret = add_tracepoint(args->parse_state, args->list, sys_name, evt_name, 632 args->err, args->head_config, args->loc); 633 634 return ret; 635 } 636 637 static int add_tracepoint_multi_event(struct add_tracepoint_multi_args *args, const char *sys_name) 638 { 639 if (strpbrk(args->evt_glob, "*?") == NULL) { 640 /* Not a glob. */ 641 args->found++; 642 return add_tracepoint(args->parse_state, args->list, sys_name, args->evt_glob, 643 args->err, args->head_config, args->loc); 644 } 645 646 return tp_pmu__for_each_tp_event(sys_name, args, add_tracepoint_multi_event_cb); 647 } 648 649 static int add_tracepoint_multi_sys_cb(void *state, const char *sys_name) 650 { 651 struct add_tracepoint_multi_args *args = state; 652 653 if (!strglobmatch(sys_name, args->sys_glob)) 654 return 0; 655 656 return add_tracepoint_multi_event(args, sys_name); 657 } 658 659 static int add_tracepoint_multi_sys(struct parse_events_state *parse_state, 660 struct list_head *list, 661 const char *sys_glob, const char *evt_glob, 662 struct parse_events_error *err, 663 struct parse_events_terms *head_config, YYLTYPE *loc) 664 { 665 struct add_tracepoint_multi_args args = { 666 .parse_state = parse_state, 667 .list = list, 668 .sys_glob = sys_glob, 669 .evt_glob = evt_glob, 670 .err = err, 671 .head_config = head_config, 672 .loc = loc, 673 .found = 0, 674 }; 675 int ret; 676 677 if (strpbrk(sys_glob, "*?") == NULL) { 678 /* Not a glob. */ 679 ret = add_tracepoint_multi_event(&args, sys_glob); 680 } else { 681 ret = tp_pmu__for_each_tp_sys(&args, add_tracepoint_multi_sys_cb); 682 } 683 if (args.found == 0) { 684 tracepoint_error(err, ENOENT, sys_glob, evt_glob, loc->first_column); 685 return -ENOENT; 686 } 687 return ret; 688 } 689 690 size_t default_breakpoint_len(void) 691 { 692 #if defined(__i386__) 693 static int len; 694 695 if (len == 0) { 696 struct perf_env env = {}; 697 698 perf_env__init(&env); 699 len = perf_env__kernel_is_64_bit(&env) ? sizeof(u64) : sizeof(long); 700 perf_env__exit(&env); 701 } 702 return len; 703 #elif defined(__aarch64__) 704 return 4; 705 #else 706 return sizeof(long); 707 #endif 708 } 709 710 static int 711 parse_breakpoint_type(const char *type, struct perf_event_attr *attr) 712 { 713 int i; 714 715 for (i = 0; i < 3; i++) { 716 if (!type || !type[i]) 717 break; 718 719 #define CHECK_SET_TYPE(bit) \ 720 do { \ 721 if (attr->bp_type & bit) \ 722 return -EINVAL; \ 723 else \ 724 attr->bp_type |= bit; \ 725 } while (0) 726 727 switch (type[i]) { 728 case 'r': 729 CHECK_SET_TYPE(HW_BREAKPOINT_R); 730 break; 731 case 'w': 732 CHECK_SET_TYPE(HW_BREAKPOINT_W); 733 break; 734 case 'x': 735 CHECK_SET_TYPE(HW_BREAKPOINT_X); 736 break; 737 default: 738 return -EINVAL; 739 } 740 } 741 742 #undef CHECK_SET_TYPE 743 744 if (!attr->bp_type) /* Default */ 745 attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W; 746 747 return 0; 748 } 749 750 int parse_events_add_breakpoint(struct parse_events_state *parse_state, 751 struct list_head *list, 752 u64 addr, char *type, u64 len, 753 struct parse_events_terms *head_config) 754 { 755 struct perf_event_attr attr; 756 LIST_HEAD(config_terms); 757 const char *name; 758 759 memset(&attr, 0, sizeof(attr)); 760 attr.bp_addr = addr; 761 762 if (parse_breakpoint_type(type, &attr)) 763 return -EINVAL; 764 765 /* Provide some defaults if len is not specified */ 766 if (!len) { 767 if (attr.bp_type == HW_BREAKPOINT_X) 768 len = default_breakpoint_len(); 769 else 770 len = HW_BREAKPOINT_LEN_4; 771 } 772 773 attr.bp_len = len; 774 775 attr.type = PERF_TYPE_BREAKPOINT; 776 attr.sample_period = 1; 777 778 if (head_config) { 779 if (config_attr(&attr, head_config, parse_state, config_term_common)) 780 return -EINVAL; 781 782 if (get_config_terms(head_config, &config_terms)) 783 return -ENOMEM; 784 } 785 786 name = get_config_name(head_config); 787 788 return add_event(list, &parse_state->idx, &attr, name, /*mertic_id=*/NULL, 789 &config_terms, /*alternate_hw_config=*/PERF_COUNT_HW_MAX); 790 } 791 792 static int check_type_val(struct parse_events_term *term, 793 struct parse_events_error *err, 794 enum parse_events__term_val_type type) 795 { 796 if (type == term->type_val) 797 return 0; 798 799 if (err) { 800 parse_events_error__handle(err, term->err_val, 801 type == PARSE_EVENTS__TERM_TYPE_NUM 802 ? strdup("expected numeric value") 803 : strdup("expected string value"), 804 NULL); 805 } 806 return -EINVAL; 807 } 808 809 static bool config_term_shrinked; 810 811 const char *parse_events__term_type_str(enum parse_events__term_type term_type) 812 { 813 /* 814 * Update according to parse-events.l 815 */ 816 static const char *config_term_names[__PARSE_EVENTS__TERM_TYPE_NR] = { 817 [PARSE_EVENTS__TERM_TYPE_USER] = "<sysfs term>", 818 [PARSE_EVENTS__TERM_TYPE_CONFIG] = "config", 819 [PARSE_EVENTS__TERM_TYPE_CONFIG1] = "config1", 820 [PARSE_EVENTS__TERM_TYPE_CONFIG2] = "config2", 821 [PARSE_EVENTS__TERM_TYPE_CONFIG3] = "config3", 822 [PARSE_EVENTS__TERM_TYPE_NAME] = "name", 823 [PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD] = "period", 824 [PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ] = "freq", 825 [PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE] = "branch_type", 826 [PARSE_EVENTS__TERM_TYPE_TIME] = "time", 827 [PARSE_EVENTS__TERM_TYPE_CALLGRAPH] = "call-graph", 828 [PARSE_EVENTS__TERM_TYPE_STACKSIZE] = "stack-size", 829 [PARSE_EVENTS__TERM_TYPE_NOINHERIT] = "no-inherit", 830 [PARSE_EVENTS__TERM_TYPE_INHERIT] = "inherit", 831 [PARSE_EVENTS__TERM_TYPE_MAX_STACK] = "max-stack", 832 [PARSE_EVENTS__TERM_TYPE_MAX_EVENTS] = "nr", 833 [PARSE_EVENTS__TERM_TYPE_OVERWRITE] = "overwrite", 834 [PARSE_EVENTS__TERM_TYPE_NOOVERWRITE] = "no-overwrite", 835 [PARSE_EVENTS__TERM_TYPE_DRV_CFG] = "driver-config", 836 [PARSE_EVENTS__TERM_TYPE_PERCORE] = "percore", 837 [PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT] = "aux-output", 838 [PARSE_EVENTS__TERM_TYPE_AUX_ACTION] = "aux-action", 839 [PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE] = "aux-sample-size", 840 [PARSE_EVENTS__TERM_TYPE_METRIC_ID] = "metric-id", 841 [PARSE_EVENTS__TERM_TYPE_RAW] = "raw", 842 [PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE] = "legacy-cache", 843 [PARSE_EVENTS__TERM_TYPE_HARDWARE] = "hardware", 844 [PARSE_EVENTS__TERM_TYPE_CPU] = "cpu", 845 }; 846 if ((unsigned int)term_type >= __PARSE_EVENTS__TERM_TYPE_NR) 847 return "unknown term"; 848 849 return config_term_names[term_type]; 850 } 851 852 static bool 853 config_term_avail(enum parse_events__term_type term_type, struct parse_events_error *err) 854 { 855 char *err_str; 856 857 if (term_type < 0 || term_type >= __PARSE_EVENTS__TERM_TYPE_NR) { 858 parse_events_error__handle(err, -1, 859 strdup("Invalid term_type"), NULL); 860 return false; 861 } 862 if (!config_term_shrinked) 863 return true; 864 865 switch (term_type) { 866 case PARSE_EVENTS__TERM_TYPE_CONFIG: 867 case PARSE_EVENTS__TERM_TYPE_CONFIG1: 868 case PARSE_EVENTS__TERM_TYPE_CONFIG2: 869 case PARSE_EVENTS__TERM_TYPE_CONFIG3: 870 case PARSE_EVENTS__TERM_TYPE_NAME: 871 case PARSE_EVENTS__TERM_TYPE_METRIC_ID: 872 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD: 873 case PARSE_EVENTS__TERM_TYPE_PERCORE: 874 case PARSE_EVENTS__TERM_TYPE_CPU: 875 return true; 876 case PARSE_EVENTS__TERM_TYPE_USER: 877 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ: 878 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE: 879 case PARSE_EVENTS__TERM_TYPE_TIME: 880 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH: 881 case PARSE_EVENTS__TERM_TYPE_STACKSIZE: 882 case PARSE_EVENTS__TERM_TYPE_NOINHERIT: 883 case PARSE_EVENTS__TERM_TYPE_INHERIT: 884 case PARSE_EVENTS__TERM_TYPE_MAX_STACK: 885 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS: 886 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE: 887 case PARSE_EVENTS__TERM_TYPE_OVERWRITE: 888 case PARSE_EVENTS__TERM_TYPE_DRV_CFG: 889 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT: 890 case PARSE_EVENTS__TERM_TYPE_AUX_ACTION: 891 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE: 892 case PARSE_EVENTS__TERM_TYPE_RAW: 893 case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE: 894 case PARSE_EVENTS__TERM_TYPE_HARDWARE: 895 default: 896 if (!err) 897 return false; 898 899 /* term_type is validated so indexing is safe */ 900 if (asprintf(&err_str, "'%s' is not usable in 'perf stat'", 901 parse_events__term_type_str(term_type)) >= 0) 902 parse_events_error__handle(err, -1, err_str, NULL); 903 return false; 904 } 905 } 906 907 void parse_events__shrink_config_terms(void) 908 { 909 config_term_shrinked = true; 910 } 911 912 static int config_term_common(struct perf_event_attr *attr, 913 struct parse_events_term *term, 914 struct parse_events_state *parse_state) 915 { 916 #define CHECK_TYPE_VAL(type) \ 917 do { \ 918 if (check_type_val(term, parse_state->error, PARSE_EVENTS__TERM_TYPE_ ## type)) \ 919 return -EINVAL; \ 920 } while (0) 921 922 switch (term->type_term) { 923 case PARSE_EVENTS__TERM_TYPE_CONFIG: 924 CHECK_TYPE_VAL(NUM); 925 attr->config = term->val.num; 926 break; 927 case PARSE_EVENTS__TERM_TYPE_CONFIG1: 928 CHECK_TYPE_VAL(NUM); 929 attr->config1 = term->val.num; 930 break; 931 case PARSE_EVENTS__TERM_TYPE_CONFIG2: 932 CHECK_TYPE_VAL(NUM); 933 attr->config2 = term->val.num; 934 break; 935 case PARSE_EVENTS__TERM_TYPE_CONFIG3: 936 CHECK_TYPE_VAL(NUM); 937 attr->config3 = term->val.num; 938 break; 939 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD: 940 CHECK_TYPE_VAL(NUM); 941 break; 942 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ: 943 CHECK_TYPE_VAL(NUM); 944 break; 945 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE: 946 CHECK_TYPE_VAL(STR); 947 if (strcmp(term->val.str, "no") && 948 parse_branch_str(term->val.str, 949 &attr->branch_sample_type)) { 950 parse_events_error__handle(parse_state->error, term->err_val, 951 strdup("invalid branch sample type"), 952 NULL); 953 return -EINVAL; 954 } 955 break; 956 case PARSE_EVENTS__TERM_TYPE_TIME: 957 CHECK_TYPE_VAL(NUM); 958 if (term->val.num > 1) { 959 parse_events_error__handle(parse_state->error, term->err_val, 960 strdup("expected 0 or 1"), 961 NULL); 962 return -EINVAL; 963 } 964 break; 965 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH: 966 CHECK_TYPE_VAL(STR); 967 break; 968 case PARSE_EVENTS__TERM_TYPE_STACKSIZE: 969 CHECK_TYPE_VAL(NUM); 970 break; 971 case PARSE_EVENTS__TERM_TYPE_INHERIT: 972 CHECK_TYPE_VAL(NUM); 973 break; 974 case PARSE_EVENTS__TERM_TYPE_NOINHERIT: 975 CHECK_TYPE_VAL(NUM); 976 break; 977 case PARSE_EVENTS__TERM_TYPE_OVERWRITE: 978 CHECK_TYPE_VAL(NUM); 979 break; 980 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE: 981 CHECK_TYPE_VAL(NUM); 982 break; 983 case PARSE_EVENTS__TERM_TYPE_NAME: 984 CHECK_TYPE_VAL(STR); 985 break; 986 case PARSE_EVENTS__TERM_TYPE_METRIC_ID: 987 CHECK_TYPE_VAL(STR); 988 break; 989 case PARSE_EVENTS__TERM_TYPE_RAW: 990 CHECK_TYPE_VAL(STR); 991 break; 992 case PARSE_EVENTS__TERM_TYPE_MAX_STACK: 993 CHECK_TYPE_VAL(NUM); 994 break; 995 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS: 996 CHECK_TYPE_VAL(NUM); 997 break; 998 case PARSE_EVENTS__TERM_TYPE_PERCORE: 999 CHECK_TYPE_VAL(NUM); 1000 if ((unsigned int)term->val.num > 1) { 1001 parse_events_error__handle(parse_state->error, term->err_val, 1002 strdup("expected 0 or 1"), 1003 NULL); 1004 return -EINVAL; 1005 } 1006 break; 1007 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT: 1008 CHECK_TYPE_VAL(NUM); 1009 break; 1010 case PARSE_EVENTS__TERM_TYPE_AUX_ACTION: 1011 CHECK_TYPE_VAL(STR); 1012 break; 1013 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE: 1014 CHECK_TYPE_VAL(NUM); 1015 if (term->val.num > UINT_MAX) { 1016 parse_events_error__handle(parse_state->error, term->err_val, 1017 strdup("too big"), 1018 NULL); 1019 return -EINVAL; 1020 } 1021 break; 1022 case PARSE_EVENTS__TERM_TYPE_CPU: { 1023 struct perf_cpu_map *map; 1024 1025 if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) { 1026 if (term->val.num >= (u64)cpu__max_present_cpu().cpu) { 1027 parse_events_error__handle(parse_state->error, term->err_val, 1028 strdup("too big"), 1029 /*help=*/NULL); 1030 return -EINVAL; 1031 } 1032 break; 1033 } 1034 assert(term->type_val == PARSE_EVENTS__TERM_TYPE_STR); 1035 if (perf_pmus__find(term->val.str) != NULL) 1036 break; 1037 1038 map = perf_cpu_map__new(term->val.str); 1039 if (!map && !parse_state->fake_pmu) { 1040 parse_events_error__handle(parse_state->error, term->err_val, 1041 strdup("not a valid PMU or CPU number"), 1042 /*help=*/NULL); 1043 return -EINVAL; 1044 } 1045 perf_cpu_map__put(map); 1046 break; 1047 } 1048 case PARSE_EVENTS__TERM_TYPE_DRV_CFG: 1049 case PARSE_EVENTS__TERM_TYPE_USER: 1050 case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE: 1051 case PARSE_EVENTS__TERM_TYPE_HARDWARE: 1052 default: 1053 parse_events_error__handle(parse_state->error, term->err_term, 1054 strdup(parse_events__term_type_str(term->type_term)), 1055 parse_events_formats_error_string(NULL)); 1056 return -EINVAL; 1057 } 1058 1059 /* 1060 * Check term availability after basic checking so 1061 * PARSE_EVENTS__TERM_TYPE_USER can be found and filtered. 1062 * 1063 * If check availability at the entry of this function, 1064 * user will see "'<sysfs term>' is not usable in 'perf stat'" 1065 * if an invalid config term is provided for legacy events 1066 * (for example, instructions/badterm/...), which is confusing. 1067 */ 1068 if (!config_term_avail(term->type_term, parse_state->error)) 1069 return -EINVAL; 1070 return 0; 1071 #undef CHECK_TYPE_VAL 1072 } 1073 1074 static int config_term_pmu(struct perf_event_attr *attr, 1075 struct parse_events_term *term, 1076 struct parse_events_state *parse_state) 1077 { 1078 if (term->type_term == PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE) { 1079 struct perf_pmu *pmu = perf_pmus__find_by_type(attr->type); 1080 1081 if (!pmu) { 1082 char *err_str; 1083 1084 if (asprintf(&err_str, "Failed to find PMU for type %d", attr->type) >= 0) 1085 parse_events_error__handle(parse_state->error, term->err_term, 1086 err_str, /*help=*/NULL); 1087 return -EINVAL; 1088 } 1089 /* 1090 * Rewrite the PMU event to a legacy cache one unless the PMU 1091 * doesn't support legacy cache events or the event is present 1092 * within the PMU. 1093 */ 1094 if (perf_pmu__supports_legacy_cache(pmu) && 1095 !perf_pmu__have_event(pmu, term->config)) { 1096 attr->type = PERF_TYPE_HW_CACHE; 1097 return parse_events__decode_legacy_cache(term->config, pmu->type, 1098 &attr->config); 1099 } else { 1100 term->type_term = PARSE_EVENTS__TERM_TYPE_USER; 1101 term->no_value = true; 1102 } 1103 } 1104 if (term->type_term == PARSE_EVENTS__TERM_TYPE_HARDWARE) { 1105 struct perf_pmu *pmu = perf_pmus__find_by_type(attr->type); 1106 1107 if (!pmu) { 1108 char *err_str; 1109 1110 if (asprintf(&err_str, "Failed to find PMU for type %d", attr->type) >= 0) 1111 parse_events_error__handle(parse_state->error, term->err_term, 1112 err_str, /*help=*/NULL); 1113 return -EINVAL; 1114 } 1115 /* 1116 * If the PMU has a sysfs or json event prefer it over 1117 * legacy. ARM requires this. 1118 */ 1119 if (perf_pmu__have_event(pmu, term->config)) { 1120 term->type_term = PARSE_EVENTS__TERM_TYPE_USER; 1121 term->no_value = true; 1122 term->alternate_hw_config = true; 1123 } else { 1124 attr->type = PERF_TYPE_HARDWARE; 1125 attr->config = term->val.num; 1126 if (perf_pmus__supports_extended_type()) 1127 attr->config |= (__u64)pmu->type << PERF_PMU_TYPE_SHIFT; 1128 } 1129 return 0; 1130 } 1131 if (term->type_term == PARSE_EVENTS__TERM_TYPE_USER || 1132 term->type_term == PARSE_EVENTS__TERM_TYPE_DRV_CFG) { 1133 /* 1134 * Always succeed for sysfs terms, as we dont know 1135 * at this point what type they need to have. 1136 */ 1137 return 0; 1138 } 1139 return config_term_common(attr, term, parse_state); 1140 } 1141 1142 static int config_term_tracepoint(struct perf_event_attr *attr, 1143 struct parse_events_term *term, 1144 struct parse_events_state *parse_state) 1145 { 1146 switch (term->type_term) { 1147 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH: 1148 case PARSE_EVENTS__TERM_TYPE_STACKSIZE: 1149 case PARSE_EVENTS__TERM_TYPE_INHERIT: 1150 case PARSE_EVENTS__TERM_TYPE_NOINHERIT: 1151 case PARSE_EVENTS__TERM_TYPE_MAX_STACK: 1152 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS: 1153 case PARSE_EVENTS__TERM_TYPE_OVERWRITE: 1154 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE: 1155 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT: 1156 case PARSE_EVENTS__TERM_TYPE_AUX_ACTION: 1157 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE: 1158 return config_term_common(attr, term, parse_state); 1159 case PARSE_EVENTS__TERM_TYPE_USER: 1160 case PARSE_EVENTS__TERM_TYPE_CONFIG: 1161 case PARSE_EVENTS__TERM_TYPE_CONFIG1: 1162 case PARSE_EVENTS__TERM_TYPE_CONFIG2: 1163 case PARSE_EVENTS__TERM_TYPE_CONFIG3: 1164 case PARSE_EVENTS__TERM_TYPE_NAME: 1165 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD: 1166 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ: 1167 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE: 1168 case PARSE_EVENTS__TERM_TYPE_TIME: 1169 case PARSE_EVENTS__TERM_TYPE_DRV_CFG: 1170 case PARSE_EVENTS__TERM_TYPE_PERCORE: 1171 case PARSE_EVENTS__TERM_TYPE_METRIC_ID: 1172 case PARSE_EVENTS__TERM_TYPE_RAW: 1173 case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE: 1174 case PARSE_EVENTS__TERM_TYPE_HARDWARE: 1175 case PARSE_EVENTS__TERM_TYPE_CPU: 1176 default: 1177 parse_events_error__handle(parse_state->error, term->err_term, 1178 strdup(parse_events__term_type_str(term->type_term)), 1179 strdup("valid terms: call-graph,stack-size\n") 1180 ); 1181 return -EINVAL; 1182 } 1183 1184 return 0; 1185 } 1186 1187 static int config_attr(struct perf_event_attr *attr, 1188 const struct parse_events_terms *head, 1189 struct parse_events_state *parse_state, 1190 config_term_func_t config_term) 1191 { 1192 struct parse_events_term *term; 1193 1194 list_for_each_entry(term, &head->terms, list) 1195 if (config_term(attr, term, parse_state)) 1196 return -EINVAL; 1197 1198 return 0; 1199 } 1200 1201 static int get_config_terms(const struct parse_events_terms *head_config, 1202 struct list_head *head_terms) 1203 { 1204 #define ADD_CONFIG_TERM(__type, __weak) \ 1205 struct evsel_config_term *__t; \ 1206 \ 1207 __t = zalloc(sizeof(*__t)); \ 1208 if (!__t) \ 1209 return -ENOMEM; \ 1210 \ 1211 INIT_LIST_HEAD(&__t->list); \ 1212 __t->type = EVSEL__CONFIG_TERM_ ## __type; \ 1213 __t->weak = __weak; \ 1214 list_add_tail(&__t->list, head_terms) 1215 1216 #define ADD_CONFIG_TERM_VAL(__type, __name, __val, __weak) \ 1217 do { \ 1218 ADD_CONFIG_TERM(__type, __weak); \ 1219 __t->val.__name = __val; \ 1220 } while (0) 1221 1222 #define ADD_CONFIG_TERM_STR(__type, __val, __weak) \ 1223 do { \ 1224 ADD_CONFIG_TERM(__type, __weak); \ 1225 __t->val.str = strdup(__val); \ 1226 if (!__t->val.str) { \ 1227 zfree(&__t); \ 1228 return -ENOMEM; \ 1229 } \ 1230 __t->free_str = true; \ 1231 } while (0) 1232 1233 struct parse_events_term *term; 1234 1235 list_for_each_entry(term, &head_config->terms, list) { 1236 switch (term->type_term) { 1237 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD: 1238 ADD_CONFIG_TERM_VAL(PERIOD, period, term->val.num, term->weak); 1239 break; 1240 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ: 1241 ADD_CONFIG_TERM_VAL(FREQ, freq, term->val.num, term->weak); 1242 break; 1243 case PARSE_EVENTS__TERM_TYPE_TIME: 1244 ADD_CONFIG_TERM_VAL(TIME, time, term->val.num, term->weak); 1245 break; 1246 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH: 1247 ADD_CONFIG_TERM_STR(CALLGRAPH, term->val.str, term->weak); 1248 break; 1249 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE: 1250 ADD_CONFIG_TERM_STR(BRANCH, term->val.str, term->weak); 1251 break; 1252 case PARSE_EVENTS__TERM_TYPE_STACKSIZE: 1253 ADD_CONFIG_TERM_VAL(STACK_USER, stack_user, 1254 term->val.num, term->weak); 1255 break; 1256 case PARSE_EVENTS__TERM_TYPE_INHERIT: 1257 ADD_CONFIG_TERM_VAL(INHERIT, inherit, 1258 term->val.num ? 1 : 0, term->weak); 1259 break; 1260 case PARSE_EVENTS__TERM_TYPE_NOINHERIT: 1261 ADD_CONFIG_TERM_VAL(INHERIT, inherit, 1262 term->val.num ? 0 : 1, term->weak); 1263 break; 1264 case PARSE_EVENTS__TERM_TYPE_MAX_STACK: 1265 ADD_CONFIG_TERM_VAL(MAX_STACK, max_stack, 1266 term->val.num, term->weak); 1267 break; 1268 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS: 1269 ADD_CONFIG_TERM_VAL(MAX_EVENTS, max_events, 1270 term->val.num, term->weak); 1271 break; 1272 case PARSE_EVENTS__TERM_TYPE_OVERWRITE: 1273 ADD_CONFIG_TERM_VAL(OVERWRITE, overwrite, 1274 term->val.num ? 1 : 0, term->weak); 1275 break; 1276 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE: 1277 ADD_CONFIG_TERM_VAL(OVERWRITE, overwrite, 1278 term->val.num ? 0 : 1, term->weak); 1279 break; 1280 case PARSE_EVENTS__TERM_TYPE_DRV_CFG: 1281 ADD_CONFIG_TERM_STR(DRV_CFG, term->val.str, term->weak); 1282 break; 1283 case PARSE_EVENTS__TERM_TYPE_PERCORE: 1284 ADD_CONFIG_TERM_VAL(PERCORE, percore, 1285 term->val.num ? true : false, term->weak); 1286 break; 1287 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT: 1288 ADD_CONFIG_TERM_VAL(AUX_OUTPUT, aux_output, 1289 term->val.num ? 1 : 0, term->weak); 1290 break; 1291 case PARSE_EVENTS__TERM_TYPE_AUX_ACTION: 1292 ADD_CONFIG_TERM_STR(AUX_ACTION, term->val.str, term->weak); 1293 break; 1294 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE: 1295 ADD_CONFIG_TERM_VAL(AUX_SAMPLE_SIZE, aux_sample_size, 1296 term->val.num, term->weak); 1297 break; 1298 case PARSE_EVENTS__TERM_TYPE_USER: 1299 case PARSE_EVENTS__TERM_TYPE_CONFIG: 1300 case PARSE_EVENTS__TERM_TYPE_CONFIG1: 1301 case PARSE_EVENTS__TERM_TYPE_CONFIG2: 1302 case PARSE_EVENTS__TERM_TYPE_CONFIG3: 1303 case PARSE_EVENTS__TERM_TYPE_NAME: 1304 case PARSE_EVENTS__TERM_TYPE_METRIC_ID: 1305 case PARSE_EVENTS__TERM_TYPE_RAW: 1306 case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE: 1307 case PARSE_EVENTS__TERM_TYPE_HARDWARE: 1308 case PARSE_EVENTS__TERM_TYPE_CPU: 1309 default: 1310 break; 1311 } 1312 } 1313 return 0; 1314 } 1315 1316 /* 1317 * Add EVSEL__CONFIG_TERM_CFG_CHG where cfg_chg will have a bit set for 1318 * each bit of attr->config that the user has changed. 1319 */ 1320 static int get_config_chgs(struct perf_pmu *pmu, struct parse_events_terms *head_config, 1321 struct list_head *head_terms) 1322 { 1323 struct parse_events_term *term; 1324 u64 bits = 0; 1325 int type; 1326 1327 list_for_each_entry(term, &head_config->terms, list) { 1328 switch (term->type_term) { 1329 case PARSE_EVENTS__TERM_TYPE_USER: 1330 type = perf_pmu__format_type(pmu, term->config); 1331 if (type != PERF_PMU_FORMAT_VALUE_CONFIG) 1332 continue; 1333 bits |= perf_pmu__format_bits(pmu, term->config); 1334 break; 1335 case PARSE_EVENTS__TERM_TYPE_CONFIG: 1336 bits = ~(u64)0; 1337 break; 1338 case PARSE_EVENTS__TERM_TYPE_CONFIG1: 1339 case PARSE_EVENTS__TERM_TYPE_CONFIG2: 1340 case PARSE_EVENTS__TERM_TYPE_CONFIG3: 1341 case PARSE_EVENTS__TERM_TYPE_NAME: 1342 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD: 1343 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ: 1344 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE: 1345 case PARSE_EVENTS__TERM_TYPE_TIME: 1346 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH: 1347 case PARSE_EVENTS__TERM_TYPE_STACKSIZE: 1348 case PARSE_EVENTS__TERM_TYPE_NOINHERIT: 1349 case PARSE_EVENTS__TERM_TYPE_INHERIT: 1350 case PARSE_EVENTS__TERM_TYPE_MAX_STACK: 1351 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS: 1352 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE: 1353 case PARSE_EVENTS__TERM_TYPE_OVERWRITE: 1354 case PARSE_EVENTS__TERM_TYPE_DRV_CFG: 1355 case PARSE_EVENTS__TERM_TYPE_PERCORE: 1356 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT: 1357 case PARSE_EVENTS__TERM_TYPE_AUX_ACTION: 1358 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE: 1359 case PARSE_EVENTS__TERM_TYPE_METRIC_ID: 1360 case PARSE_EVENTS__TERM_TYPE_RAW: 1361 case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE: 1362 case PARSE_EVENTS__TERM_TYPE_HARDWARE: 1363 case PARSE_EVENTS__TERM_TYPE_CPU: 1364 default: 1365 break; 1366 } 1367 } 1368 1369 if (bits) 1370 ADD_CONFIG_TERM_VAL(CFG_CHG, cfg_chg, bits, false); 1371 1372 #undef ADD_CONFIG_TERM 1373 return 0; 1374 } 1375 1376 int parse_events_add_tracepoint(struct parse_events_state *parse_state, 1377 struct list_head *list, 1378 const char *sys, const char *event, 1379 struct parse_events_error *err, 1380 struct parse_events_terms *head_config, void *loc_) 1381 { 1382 YYLTYPE *loc = loc_; 1383 1384 if (head_config) { 1385 struct perf_event_attr attr; 1386 1387 if (config_attr(&attr, head_config, parse_state, config_term_tracepoint)) 1388 return -EINVAL; 1389 } 1390 1391 return add_tracepoint_multi_sys(parse_state, list, sys, event, 1392 err, head_config, loc); 1393 } 1394 1395 static int __parse_events_add_numeric(struct parse_events_state *parse_state, 1396 struct list_head *list, 1397 struct perf_pmu *pmu, u32 type, u32 extended_type, 1398 u64 config, const struct parse_events_terms *head_config, 1399 struct evsel *first_wildcard_match) 1400 { 1401 struct perf_event_attr attr; 1402 LIST_HEAD(config_terms); 1403 const char *name, *metric_id; 1404 struct perf_cpu_map *cpus; 1405 int ret; 1406 1407 memset(&attr, 0, sizeof(attr)); 1408 attr.type = type; 1409 attr.config = config; 1410 if (extended_type && (type == PERF_TYPE_HARDWARE || type == PERF_TYPE_HW_CACHE)) { 1411 assert(perf_pmus__supports_extended_type()); 1412 attr.config |= (u64)extended_type << PERF_PMU_TYPE_SHIFT; 1413 } 1414 1415 if (head_config) { 1416 if (config_attr(&attr, head_config, parse_state, config_term_common)) 1417 return -EINVAL; 1418 1419 if (get_config_terms(head_config, &config_terms)) 1420 return -ENOMEM; 1421 } 1422 1423 name = get_config_name(head_config); 1424 metric_id = get_config_metric_id(head_config); 1425 cpus = get_config_cpu(head_config, parse_state->fake_pmu); 1426 ret = __add_event(list, &parse_state->idx, &attr, /*init_attr*/true, name, 1427 metric_id, pmu, &config_terms, first_wildcard_match, 1428 cpus, /*alternate_hw_config=*/PERF_COUNT_HW_MAX) ? 0 : -ENOMEM; 1429 perf_cpu_map__put(cpus); 1430 free_config_terms(&config_terms); 1431 return ret; 1432 } 1433 1434 int parse_events_add_numeric(struct parse_events_state *parse_state, 1435 struct list_head *list, 1436 u32 type, u64 config, 1437 const struct parse_events_terms *head_config, 1438 bool wildcard) 1439 { 1440 struct perf_pmu *pmu = NULL; 1441 bool found_supported = false; 1442 1443 /* Wildcards on numeric values are only supported by core PMUs. */ 1444 if (wildcard && perf_pmus__supports_extended_type()) { 1445 struct evsel *first_wildcard_match = NULL; 1446 while ((pmu = perf_pmus__scan_core(pmu)) != NULL) { 1447 int ret; 1448 1449 found_supported = true; 1450 if (parse_events__filter_pmu(parse_state, pmu)) 1451 continue; 1452 1453 ret = __parse_events_add_numeric(parse_state, list, pmu, 1454 type, pmu->type, 1455 config, head_config, 1456 first_wildcard_match); 1457 if (ret) 1458 return ret; 1459 if (first_wildcard_match == NULL) 1460 first_wildcard_match = 1461 container_of(list->prev, struct evsel, core.node); 1462 } 1463 if (found_supported) 1464 return 0; 1465 } 1466 return __parse_events_add_numeric(parse_state, list, perf_pmus__find_by_type(type), 1467 type, /*extended_type=*/0, config, head_config, 1468 /*first_wildcard_match=*/NULL); 1469 } 1470 1471 static bool config_term_percore(struct list_head *config_terms) 1472 { 1473 struct evsel_config_term *term; 1474 1475 list_for_each_entry(term, config_terms, list) { 1476 if (term->type == EVSEL__CONFIG_TERM_PERCORE) 1477 return term->val.percore; 1478 } 1479 1480 return false; 1481 } 1482 1483 static int parse_events_add_pmu(struct parse_events_state *parse_state, 1484 struct list_head *list, struct perf_pmu *pmu, 1485 const struct parse_events_terms *const_parsed_terms, 1486 struct evsel *first_wildcard_match, u64 alternate_hw_config) 1487 { 1488 struct perf_event_attr attr; 1489 struct perf_pmu_info info; 1490 struct evsel *evsel; 1491 struct parse_events_error *err = parse_state->error; 1492 LIST_HEAD(config_terms); 1493 struct parse_events_terms parsed_terms; 1494 bool alias_rewrote_terms = false; 1495 struct perf_cpu_map *term_cpu = NULL; 1496 1497 if (verbose > 1) { 1498 struct strbuf sb; 1499 1500 strbuf_init(&sb, /*hint=*/ 0); 1501 if (pmu->selectable && const_parsed_terms && 1502 list_empty(&const_parsed_terms->terms)) { 1503 strbuf_addf(&sb, "%s//", pmu->name); 1504 } else { 1505 strbuf_addf(&sb, "%s/", pmu->name); 1506 parse_events_terms__to_strbuf(const_parsed_terms, &sb); 1507 strbuf_addch(&sb, '/'); 1508 } 1509 fprintf(stderr, "Attempt to add: %s\n", sb.buf); 1510 strbuf_release(&sb); 1511 } 1512 1513 memset(&attr, 0, sizeof(attr)); 1514 if (pmu->perf_event_attr_init_default) 1515 pmu->perf_event_attr_init_default(pmu, &attr); 1516 1517 attr.type = pmu->type; 1518 1519 if (!const_parsed_terms || list_empty(&const_parsed_terms->terms)) { 1520 evsel = __add_event(list, &parse_state->idx, &attr, 1521 /*init_attr=*/true, /*name=*/NULL, 1522 /*metric_id=*/NULL, pmu, 1523 /*config_terms=*/NULL, first_wildcard_match, 1524 /*cpu_list=*/NULL, alternate_hw_config); 1525 return evsel ? 0 : -ENOMEM; 1526 } 1527 1528 parse_events_terms__init(&parsed_terms); 1529 if (const_parsed_terms) { 1530 int ret = parse_events_terms__copy(const_parsed_terms, &parsed_terms); 1531 1532 if (ret) 1533 return ret; 1534 } 1535 fix_raw(&parsed_terms, pmu); 1536 1537 /* Configure attr/terms with a known PMU, this will set hardcoded terms. */ 1538 if (config_attr(&attr, &parsed_terms, parse_state, config_term_pmu)) { 1539 parse_events_terms__exit(&parsed_terms); 1540 return -EINVAL; 1541 } 1542 1543 /* Look for event names in the terms and rewrite into format based terms. */ 1544 if (perf_pmu__check_alias(pmu, &parsed_terms, 1545 &info, &alias_rewrote_terms, 1546 &alternate_hw_config, err)) { 1547 parse_events_terms__exit(&parsed_terms); 1548 return -EINVAL; 1549 } 1550 1551 if (verbose > 1) { 1552 struct strbuf sb; 1553 1554 strbuf_init(&sb, /*hint=*/ 0); 1555 parse_events_terms__to_strbuf(&parsed_terms, &sb); 1556 fprintf(stderr, "..after resolving event: %s/%s/\n", pmu->name, sb.buf); 1557 strbuf_release(&sb); 1558 } 1559 1560 /* Configure attr/terms again if an alias was expanded. */ 1561 if (alias_rewrote_terms && 1562 config_attr(&attr, &parsed_terms, parse_state, config_term_pmu)) { 1563 parse_events_terms__exit(&parsed_terms); 1564 return -EINVAL; 1565 } 1566 1567 if (get_config_terms(&parsed_terms, &config_terms)) { 1568 parse_events_terms__exit(&parsed_terms); 1569 return -ENOMEM; 1570 } 1571 1572 /* 1573 * When using default config, record which bits of attr->config were 1574 * changed by the user. 1575 */ 1576 if (pmu->perf_event_attr_init_default && 1577 get_config_chgs(pmu, &parsed_terms, &config_terms)) { 1578 parse_events_terms__exit(&parsed_terms); 1579 return -ENOMEM; 1580 } 1581 1582 /* Skip configuring hard coded terms that were applied by config_attr. */ 1583 if (perf_pmu__config(pmu, &attr, &parsed_terms, /*apply_hardcoded=*/false, 1584 parse_state->error)) { 1585 free_config_terms(&config_terms); 1586 parse_events_terms__exit(&parsed_terms); 1587 return -EINVAL; 1588 } 1589 1590 term_cpu = get_config_cpu(&parsed_terms, parse_state->fake_pmu); 1591 evsel = __add_event(list, &parse_state->idx, &attr, /*init_attr=*/true, 1592 get_config_name(&parsed_terms), 1593 get_config_metric_id(&parsed_terms), pmu, 1594 &config_terms, first_wildcard_match, term_cpu, alternate_hw_config); 1595 perf_cpu_map__put(term_cpu); 1596 if (!evsel) { 1597 parse_events_terms__exit(&parsed_terms); 1598 return -ENOMEM; 1599 } 1600 1601 if (evsel->name) 1602 evsel->use_config_name = true; 1603 1604 evsel->percore = config_term_percore(&evsel->config_terms); 1605 1606 parse_events_terms__exit(&parsed_terms); 1607 free((char *)evsel->unit); 1608 evsel->unit = strdup(info.unit); 1609 evsel->scale = info.scale; 1610 evsel->per_pkg = info.per_pkg; 1611 evsel->snapshot = info.snapshot; 1612 evsel->retirement_latency.mean = info.retirement_latency_mean; 1613 evsel->retirement_latency.min = info.retirement_latency_min; 1614 evsel->retirement_latency.max = info.retirement_latency_max; 1615 1616 return 0; 1617 } 1618 1619 int parse_events_multi_pmu_add(struct parse_events_state *parse_state, 1620 const char *event_name, u64 hw_config, 1621 const struct parse_events_terms *const_parsed_terms, 1622 struct list_head **listp, void *loc_) 1623 { 1624 struct parse_events_term *term; 1625 struct list_head *list = NULL; 1626 struct perf_pmu *pmu = NULL; 1627 YYLTYPE *loc = loc_; 1628 int ok = 0; 1629 const char *config; 1630 struct parse_events_terms parsed_terms; 1631 struct evsel *first_wildcard_match = NULL; 1632 1633 *listp = NULL; 1634 1635 parse_events_terms__init(&parsed_terms); 1636 if (const_parsed_terms) { 1637 int ret = parse_events_terms__copy(const_parsed_terms, &parsed_terms); 1638 1639 if (ret) 1640 return ret; 1641 } 1642 1643 config = strdup(event_name); 1644 if (!config) 1645 goto out_err; 1646 1647 if (parse_events_term__num(&term, 1648 PARSE_EVENTS__TERM_TYPE_USER, 1649 config, /*num=*/1, /*novalue=*/true, 1650 loc, /*loc_val=*/NULL) < 0) { 1651 zfree(&config); 1652 goto out_err; 1653 } 1654 list_add_tail(&term->list, &parsed_terms.terms); 1655 1656 /* Add it for all PMUs that support the alias */ 1657 list = malloc(sizeof(struct list_head)); 1658 if (!list) 1659 goto out_err; 1660 1661 INIT_LIST_HEAD(list); 1662 1663 while ((pmu = perf_pmus__scan_for_event(pmu, event_name)) != NULL) { 1664 1665 if (parse_events__filter_pmu(parse_state, pmu)) 1666 continue; 1667 1668 if (!perf_pmu__have_event(pmu, event_name)) 1669 continue; 1670 1671 if (!parse_events_add_pmu(parse_state, list, pmu, 1672 &parsed_terms, first_wildcard_match, hw_config)) { 1673 struct strbuf sb; 1674 1675 strbuf_init(&sb, /*hint=*/ 0); 1676 parse_events_terms__to_strbuf(&parsed_terms, &sb); 1677 pr_debug("%s -> %s/%s/\n", event_name, pmu->name, sb.buf); 1678 strbuf_release(&sb); 1679 ok++; 1680 } 1681 if (first_wildcard_match == NULL) 1682 first_wildcard_match = container_of(list->prev, struct evsel, core.node); 1683 } 1684 1685 if (parse_state->fake_pmu) { 1686 if (!parse_events_add_pmu(parse_state, list, perf_pmus__fake_pmu(), &parsed_terms, 1687 first_wildcard_match, hw_config)) { 1688 struct strbuf sb; 1689 1690 strbuf_init(&sb, /*hint=*/ 0); 1691 parse_events_terms__to_strbuf(&parsed_terms, &sb); 1692 pr_debug("%s -> fake/%s/\n", event_name, sb.buf); 1693 strbuf_release(&sb); 1694 ok++; 1695 } 1696 } 1697 1698 out_err: 1699 parse_events_terms__exit(&parsed_terms); 1700 if (ok) 1701 *listp = list; 1702 else 1703 free(list); 1704 1705 return ok ? 0 : -1; 1706 } 1707 1708 int parse_events_multi_pmu_add_or_add_pmu(struct parse_events_state *parse_state, 1709 const char *event_or_pmu, 1710 const struct parse_events_terms *const_parsed_terms, 1711 struct list_head **listp, 1712 void *loc_) 1713 { 1714 YYLTYPE *loc = loc_; 1715 struct perf_pmu *pmu; 1716 int ok = 0; 1717 char *help; 1718 struct evsel *first_wildcard_match = NULL; 1719 1720 *listp = malloc(sizeof(**listp)); 1721 if (!*listp) 1722 return -ENOMEM; 1723 1724 INIT_LIST_HEAD(*listp); 1725 1726 /* Attempt to add to list assuming event_or_pmu is a PMU name. */ 1727 pmu = perf_pmus__find(event_or_pmu); 1728 if (pmu && !parse_events_add_pmu(parse_state, *listp, pmu, const_parsed_terms, 1729 first_wildcard_match, 1730 /*alternate_hw_config=*/PERF_COUNT_HW_MAX)) 1731 return 0; 1732 1733 if (parse_state->fake_pmu) { 1734 if (!parse_events_add_pmu(parse_state, *listp, perf_pmus__fake_pmu(), 1735 const_parsed_terms, 1736 first_wildcard_match, 1737 /*alternate_hw_config=*/PERF_COUNT_HW_MAX)) 1738 return 0; 1739 } 1740 1741 pmu = NULL; 1742 /* Failed to add, try wildcard expansion of event_or_pmu as a PMU name. */ 1743 while ((pmu = perf_pmus__scan_matching_wildcard(pmu, event_or_pmu)) != NULL) { 1744 1745 if (parse_events__filter_pmu(parse_state, pmu)) 1746 continue; 1747 1748 if (!parse_events_add_pmu(parse_state, *listp, pmu, 1749 const_parsed_terms, 1750 first_wildcard_match, 1751 /*alternate_hw_config=*/PERF_COUNT_HW_MAX)) { 1752 ok++; 1753 parse_state->wild_card_pmus = true; 1754 } 1755 if (first_wildcard_match == NULL) { 1756 first_wildcard_match = 1757 container_of((*listp)->prev, struct evsel, core.node); 1758 } 1759 } 1760 if (ok) 1761 return 0; 1762 1763 /* Failure to add, assume event_or_pmu is an event name. */ 1764 zfree(listp); 1765 if (!parse_events_multi_pmu_add(parse_state, event_or_pmu, PERF_COUNT_HW_MAX, 1766 const_parsed_terms, listp, loc)) 1767 return 0; 1768 1769 if (asprintf(&help, "Unable to find PMU or event on a PMU of '%s'", event_or_pmu) < 0) 1770 help = NULL; 1771 parse_events_error__handle(parse_state->error, loc->first_column, 1772 strdup("Bad event or PMU"), 1773 help); 1774 zfree(listp); 1775 return -EINVAL; 1776 } 1777 1778 void parse_events__set_leader(char *name, struct list_head *list) 1779 { 1780 struct evsel *leader; 1781 1782 if (list_empty(list)) { 1783 WARN_ONCE(true, "WARNING: failed to set leader: empty list"); 1784 return; 1785 } 1786 1787 leader = list_first_entry(list, struct evsel, core.node); 1788 __perf_evlist__set_leader(list, &leader->core); 1789 zfree(&leader->group_name); 1790 leader->group_name = name; 1791 } 1792 1793 static int parse_events__modifier_list(struct parse_events_state *parse_state, 1794 YYLTYPE *loc, 1795 struct list_head *list, 1796 struct parse_events_modifier mod, 1797 bool group) 1798 { 1799 struct evsel *evsel; 1800 1801 if (!group && mod.weak) { 1802 parse_events_error__handle(parse_state->error, loc->first_column, 1803 strdup("Weak modifier is for use with groups"), NULL); 1804 return -EINVAL; 1805 } 1806 1807 __evlist__for_each_entry(list, evsel) { 1808 /* Translate modifiers into the equivalent evsel excludes. */ 1809 int eu = group ? evsel->core.attr.exclude_user : 0; 1810 int ek = group ? evsel->core.attr.exclude_kernel : 0; 1811 int eh = group ? evsel->core.attr.exclude_hv : 0; 1812 int eH = group ? evsel->core.attr.exclude_host : 0; 1813 int eG = group ? evsel->core.attr.exclude_guest : 0; 1814 int exclude = eu | ek | eh; 1815 int exclude_GH = eG | eH; 1816 1817 if (mod.user) { 1818 if (!exclude) 1819 exclude = eu = ek = eh = 1; 1820 eu = 0; 1821 } 1822 if (mod.kernel) { 1823 if (!exclude) 1824 exclude = eu = ek = eh = 1; 1825 ek = 0; 1826 } 1827 if (mod.hypervisor) { 1828 if (!exclude) 1829 exclude = eu = ek = eh = 1; 1830 eh = 0; 1831 } 1832 if (mod.guest) { 1833 if (!exclude_GH) 1834 exclude_GH = eG = eH = 1; 1835 eG = 0; 1836 } 1837 if (mod.host) { 1838 if (!exclude_GH) 1839 exclude_GH = eG = eH = 1; 1840 eH = 0; 1841 } 1842 if (!exclude_GH && exclude_GH_default) { 1843 if (perf_host) 1844 eG = 1; 1845 else if (perf_guest) 1846 eH = 1; 1847 } 1848 1849 evsel->core.attr.exclude_user = eu; 1850 evsel->core.attr.exclude_kernel = ek; 1851 evsel->core.attr.exclude_hv = eh; 1852 evsel->core.attr.exclude_host = eH; 1853 evsel->core.attr.exclude_guest = eG; 1854 evsel->exclude_GH = exclude_GH; 1855 1856 /* Simple modifiers copied to the evsel. */ 1857 if (mod.precise) { 1858 u8 precise = evsel->core.attr.precise_ip + mod.precise; 1859 /* 1860 * precise ip: 1861 * 1862 * 0 - SAMPLE_IP can have arbitrary skid 1863 * 1 - SAMPLE_IP must have constant skid 1864 * 2 - SAMPLE_IP requested to have 0 skid 1865 * 3 - SAMPLE_IP must have 0 skid 1866 * 1867 * See also PERF_RECORD_MISC_EXACT_IP 1868 */ 1869 if (precise > 3) { 1870 char *help; 1871 1872 if (asprintf(&help, 1873 "Maximum combined precise value is 3, adding precision to \"%s\"", 1874 evsel__name(evsel)) > 0) { 1875 parse_events_error__handle(parse_state->error, 1876 loc->first_column, 1877 help, NULL); 1878 } 1879 return -EINVAL; 1880 } 1881 evsel->core.attr.precise_ip = precise; 1882 } 1883 if (mod.precise_max) 1884 evsel->precise_max = 1; 1885 if (mod.non_idle) 1886 evsel->core.attr.exclude_idle = 1; 1887 if (mod.sample_read) 1888 evsel->sample_read = 1; 1889 if (mod.pinned && evsel__is_group_leader(evsel)) 1890 evsel->core.attr.pinned = 1; 1891 if (mod.exclusive && evsel__is_group_leader(evsel)) 1892 evsel->core.attr.exclusive = 1; 1893 if (mod.weak) 1894 evsel->weak_group = true; 1895 if (mod.bpf) 1896 evsel->bpf_counter = true; 1897 if (mod.retire_lat) 1898 evsel->retire_lat = true; 1899 } 1900 return 0; 1901 } 1902 1903 int parse_events__modifier_group(struct parse_events_state *parse_state, void *loc, 1904 struct list_head *list, 1905 struct parse_events_modifier mod) 1906 { 1907 return parse_events__modifier_list(parse_state, loc, list, mod, /*group=*/true); 1908 } 1909 1910 int parse_events__modifier_event(struct parse_events_state *parse_state, void *loc, 1911 struct list_head *list, 1912 struct parse_events_modifier mod) 1913 { 1914 return parse_events__modifier_list(parse_state, loc, list, mod, /*group=*/false); 1915 } 1916 1917 int parse_events__set_default_name(struct list_head *list, char *name) 1918 { 1919 struct evsel *evsel; 1920 bool used_name = false; 1921 1922 __evlist__for_each_entry(list, evsel) { 1923 if (!evsel->name) { 1924 evsel->name = used_name ? strdup(name) : name; 1925 used_name = true; 1926 if (!evsel->name) 1927 return -ENOMEM; 1928 } 1929 } 1930 if (!used_name) 1931 free(name); 1932 return 0; 1933 } 1934 1935 static int parse_events__scanner(const char *str, 1936 FILE *input, 1937 struct parse_events_state *parse_state) 1938 { 1939 YY_BUFFER_STATE buffer; 1940 void *scanner; 1941 int ret; 1942 1943 ret = parse_events_lex_init_extra(parse_state, &scanner); 1944 if (ret) 1945 return ret; 1946 1947 if (str) 1948 buffer = parse_events__scan_string(str, scanner); 1949 else 1950 parse_events_set_in(input, scanner); 1951 1952 #ifdef PARSER_DEBUG 1953 parse_events_debug = 1; 1954 parse_events_set_debug(1, scanner); 1955 #endif 1956 ret = parse_events_parse(parse_state, scanner); 1957 1958 if (str) { 1959 parse_events__flush_buffer(buffer, scanner); 1960 parse_events__delete_buffer(buffer, scanner); 1961 } 1962 parse_events_lex_destroy(scanner); 1963 return ret; 1964 } 1965 1966 /* 1967 * parse event config string, return a list of event terms. 1968 */ 1969 int parse_events_terms(struct parse_events_terms *terms, const char *str, FILE *input) 1970 { 1971 struct parse_events_state parse_state = { 1972 .terms = NULL, 1973 .stoken = PE_START_TERMS, 1974 }; 1975 int ret; 1976 1977 ret = parse_events__scanner(str, input, &parse_state); 1978 if (!ret) 1979 list_splice(&parse_state.terms->terms, &terms->terms); 1980 1981 zfree(&parse_state.terms); 1982 return ret; 1983 } 1984 1985 static int evsel__compute_group_pmu_name(struct evsel *evsel, 1986 const struct list_head *head) 1987 { 1988 struct evsel *leader = evsel__leader(evsel); 1989 struct evsel *pos; 1990 const char *group_pmu_name; 1991 struct perf_pmu *pmu = evsel__find_pmu(evsel); 1992 1993 if (!pmu) { 1994 /* 1995 * For PERF_TYPE_HARDWARE and PERF_TYPE_HW_CACHE types the PMU 1996 * is a core PMU, but in heterogeneous systems this is 1997 * unknown. For now pick the first core PMU. 1998 */ 1999 pmu = perf_pmus__scan_core(NULL); 2000 } 2001 if (!pmu) { 2002 pr_debug("No PMU found for '%s'\n", evsel__name(evsel)); 2003 return -EINVAL; 2004 } 2005 group_pmu_name = pmu->name; 2006 /* 2007 * Software events may be in a group with other uncore PMU events. Use 2008 * the pmu_name of the first non-software event to avoid breaking the 2009 * software event out of the group. 2010 * 2011 * Aux event leaders, like intel_pt, expect a group with events from 2012 * other PMUs, so substitute the AUX event's PMU in this case. 2013 */ 2014 if (perf_pmu__is_software(pmu) || evsel__is_aux_event(leader)) { 2015 struct perf_pmu *leader_pmu = evsel__find_pmu(leader); 2016 2017 if (!leader_pmu) { 2018 /* As with determining pmu above. */ 2019 leader_pmu = perf_pmus__scan_core(NULL); 2020 } 2021 /* 2022 * Starting with the leader, find the first event with a named 2023 * non-software PMU. for_each_group_(member|evsel) isn't used as 2024 * the list isn't yet sorted putting evsel's in the same group 2025 * together. 2026 */ 2027 if (leader_pmu && !perf_pmu__is_software(leader_pmu)) { 2028 group_pmu_name = leader_pmu->name; 2029 } else if (leader->core.nr_members > 1) { 2030 list_for_each_entry(pos, head, core.node) { 2031 struct perf_pmu *pos_pmu; 2032 2033 if (pos == leader || evsel__leader(pos) != leader) 2034 continue; 2035 pos_pmu = evsel__find_pmu(pos); 2036 if (!pos_pmu) { 2037 /* As with determining pmu above. */ 2038 pos_pmu = perf_pmus__scan_core(NULL); 2039 } 2040 if (pos_pmu && !perf_pmu__is_software(pos_pmu)) { 2041 group_pmu_name = pos_pmu->name; 2042 break; 2043 } 2044 } 2045 } 2046 } 2047 /* Record computed name. */ 2048 evsel->group_pmu_name = strdup(group_pmu_name); 2049 return evsel->group_pmu_name ? 0 : -ENOMEM; 2050 } 2051 2052 __weak int arch_evlist__cmp(const struct evsel *lhs, const struct evsel *rhs) 2053 { 2054 /* Order by insertion index. */ 2055 return lhs->core.idx - rhs->core.idx; 2056 } 2057 2058 static int evlist__cmp(void *_fg_idx, const struct list_head *l, const struct list_head *r) 2059 { 2060 const struct perf_evsel *lhs_core = container_of(l, struct perf_evsel, node); 2061 const struct evsel *lhs = container_of(lhs_core, struct evsel, core); 2062 const struct perf_evsel *rhs_core = container_of(r, struct perf_evsel, node); 2063 const struct evsel *rhs = container_of(rhs_core, struct evsel, core); 2064 int *force_grouped_idx = _fg_idx; 2065 int lhs_sort_idx, rhs_sort_idx, ret; 2066 const char *lhs_pmu_name, *rhs_pmu_name; 2067 2068 /* 2069 * Get the indexes of the 2 events to sort. If the events are 2070 * in groups then the leader's index is used otherwise the 2071 * event's index is used. An index may be forced for events that 2072 * must be in the same group, namely Intel topdown events. 2073 */ 2074 if (*force_grouped_idx != -1 && arch_evsel__must_be_in_group(lhs)) { 2075 lhs_sort_idx = *force_grouped_idx; 2076 } else { 2077 bool lhs_has_group = lhs_core->leader != lhs_core || lhs_core->nr_members > 1; 2078 2079 lhs_sort_idx = lhs_has_group ? lhs_core->leader->idx : lhs_core->idx; 2080 } 2081 if (*force_grouped_idx != -1 && arch_evsel__must_be_in_group(rhs)) { 2082 rhs_sort_idx = *force_grouped_idx; 2083 } else { 2084 bool rhs_has_group = rhs_core->leader != rhs_core || rhs_core->nr_members > 1; 2085 2086 rhs_sort_idx = rhs_has_group ? rhs_core->leader->idx : rhs_core->idx; 2087 } 2088 2089 /* If the indices differ then respect the insertion order. */ 2090 if (lhs_sort_idx != rhs_sort_idx) 2091 return lhs_sort_idx - rhs_sort_idx; 2092 2093 /* 2094 * Ignoring forcing, lhs_sort_idx == rhs_sort_idx so lhs and rhs should 2095 * be in the same group. Events in the same group need to be ordered by 2096 * their grouping PMU name as the group will be broken to ensure only 2097 * events on the same PMU are programmed together. 2098 * 2099 * With forcing the lhs_sort_idx == rhs_sort_idx shows that one or both 2100 * events are being forced to be at force_group_index. If only one event 2101 * is being forced then the other event is the group leader of the group 2102 * we're trying to force the event into. Ensure for the force grouped 2103 * case that the PMU name ordering is also respected. 2104 */ 2105 lhs_pmu_name = lhs->group_pmu_name; 2106 rhs_pmu_name = rhs->group_pmu_name; 2107 ret = strcmp(lhs_pmu_name, rhs_pmu_name); 2108 if (ret) 2109 return ret; 2110 2111 /* 2112 * Architecture specific sorting, by default sort events in the same 2113 * group with the same PMU by their insertion index. On Intel topdown 2114 * constraints must be adhered to - slots first, etc. 2115 */ 2116 return arch_evlist__cmp(lhs, rhs); 2117 } 2118 2119 int __weak arch_evlist__add_required_events(struct list_head *list __always_unused) 2120 { 2121 return 0; 2122 } 2123 2124 static int parse_events__sort_events_and_fix_groups(struct list_head *list) 2125 { 2126 int idx = 0, force_grouped_idx = -1; 2127 struct evsel *pos, *cur_leader = NULL; 2128 struct perf_evsel *cur_leaders_grp = NULL; 2129 bool idx_changed = false; 2130 int orig_num_leaders = 0, num_leaders = 0; 2131 int ret; 2132 struct evsel *force_grouped_leader = NULL; 2133 bool last_event_was_forced_leader = false; 2134 2135 /* On x86 topdown metrics events require a slots event. */ 2136 ret = arch_evlist__add_required_events(list); 2137 if (ret) 2138 return ret; 2139 2140 /* 2141 * Compute index to insert ungrouped events at. Place them where the 2142 * first ungrouped event appears. 2143 */ 2144 list_for_each_entry(pos, list, core.node) { 2145 const struct evsel *pos_leader = evsel__leader(pos); 2146 2147 ret = evsel__compute_group_pmu_name(pos, list); 2148 if (ret) 2149 return ret; 2150 2151 if (pos == pos_leader) 2152 orig_num_leaders++; 2153 2154 /* 2155 * Ensure indexes are sequential, in particular for multiple 2156 * event lists being merged. The indexes are used to detect when 2157 * the user order is modified. 2158 */ 2159 pos->core.idx = idx++; 2160 2161 /* 2162 * Remember an index to sort all forced grouped events 2163 * together to. Use the group leader as some events 2164 * must appear first within the group. 2165 */ 2166 if (force_grouped_idx == -1 && arch_evsel__must_be_in_group(pos)) 2167 force_grouped_idx = pos_leader->core.idx; 2168 } 2169 2170 /* Sort events. */ 2171 list_sort(&force_grouped_idx, list, evlist__cmp); 2172 2173 /* 2174 * Recompute groups, splitting for PMUs and adding groups for events 2175 * that require them. 2176 */ 2177 idx = 0; 2178 list_for_each_entry(pos, list, core.node) { 2179 const struct evsel *pos_leader = evsel__leader(pos); 2180 const char *pos_pmu_name = pos->group_pmu_name; 2181 const char *cur_leader_pmu_name; 2182 bool pos_force_grouped = force_grouped_idx != -1 && 2183 arch_evsel__must_be_in_group(pos); 2184 2185 /* Reset index and nr_members. */ 2186 if (pos->core.idx != idx) 2187 idx_changed = true; 2188 pos->core.idx = idx++; 2189 pos->core.nr_members = 0; 2190 2191 /* 2192 * Set the group leader respecting the given groupings and that 2193 * groups can't span PMUs. 2194 */ 2195 if (!cur_leader) { 2196 cur_leader = pos; 2197 cur_leaders_grp = &pos->core; 2198 if (pos_force_grouped) 2199 force_grouped_leader = pos; 2200 } 2201 2202 cur_leader_pmu_name = cur_leader->group_pmu_name; 2203 if (strcmp(cur_leader_pmu_name, pos_pmu_name)) { 2204 /* PMU changed so the group/leader must change. */ 2205 cur_leader = pos; 2206 cur_leaders_grp = pos->core.leader; 2207 if (pos_force_grouped && force_grouped_leader == NULL) 2208 force_grouped_leader = pos; 2209 } else if (cur_leaders_grp != pos->core.leader) { 2210 bool split_even_if_last_leader_was_forced = true; 2211 2212 /* 2213 * Event is for a different group. If the last event was 2214 * the forced group leader then subsequent group events 2215 * and forced events should be in the same group. If 2216 * there are no other forced group events then the 2217 * forced group leader wasn't really being forced into a 2218 * group, it just set arch_evsel__must_be_in_group, and 2219 * we don't want the group to split here. 2220 */ 2221 if (force_grouped_idx != -1 && last_event_was_forced_leader) { 2222 struct evsel *pos2 = pos; 2223 /* 2224 * Search the whole list as the group leaders 2225 * aren't currently valid. 2226 */ 2227 list_for_each_entry_continue(pos2, list, core.node) { 2228 if (pos->core.leader == pos2->core.leader && 2229 arch_evsel__must_be_in_group(pos2)) { 2230 split_even_if_last_leader_was_forced = false; 2231 break; 2232 } 2233 } 2234 } 2235 if (!last_event_was_forced_leader || split_even_if_last_leader_was_forced) { 2236 if (pos_force_grouped) { 2237 if (force_grouped_leader) { 2238 cur_leader = force_grouped_leader; 2239 cur_leaders_grp = force_grouped_leader->core.leader; 2240 } else { 2241 cur_leader = force_grouped_leader = pos; 2242 cur_leaders_grp = &pos->core; 2243 } 2244 } else { 2245 cur_leader = pos; 2246 cur_leaders_grp = pos->core.leader; 2247 } 2248 } 2249 } 2250 if (pos_leader != cur_leader) { 2251 /* The leader changed so update it. */ 2252 evsel__set_leader(pos, cur_leader); 2253 } 2254 last_event_was_forced_leader = (force_grouped_leader == pos); 2255 } 2256 list_for_each_entry(pos, list, core.node) { 2257 struct evsel *pos_leader = evsel__leader(pos); 2258 2259 if (pos == pos_leader) 2260 num_leaders++; 2261 pos_leader->core.nr_members++; 2262 } 2263 return (idx_changed || num_leaders != orig_num_leaders) ? 1 : 0; 2264 } 2265 2266 int __parse_events(struct evlist *evlist, const char *str, const char *pmu_filter, 2267 struct parse_events_error *err, bool fake_pmu, 2268 bool warn_if_reordered, bool fake_tp) 2269 { 2270 struct parse_events_state parse_state = { 2271 .list = LIST_HEAD_INIT(parse_state.list), 2272 .idx = evlist->core.nr_entries, 2273 .error = err, 2274 .stoken = PE_START_EVENTS, 2275 .fake_pmu = fake_pmu, 2276 .fake_tp = fake_tp, 2277 .pmu_filter = pmu_filter, 2278 .match_legacy_cache_terms = true, 2279 }; 2280 int ret, ret2; 2281 2282 ret = parse_events__scanner(str, /*input=*/ NULL, &parse_state); 2283 2284 if (!ret && list_empty(&parse_state.list)) { 2285 WARN_ONCE(true, "WARNING: event parser found nothing\n"); 2286 return -1; 2287 } 2288 2289 ret2 = parse_events__sort_events_and_fix_groups(&parse_state.list); 2290 if (ret2 < 0) 2291 return ret; 2292 2293 /* 2294 * Add list to the evlist even with errors to allow callers to clean up. 2295 */ 2296 evlist__splice_list_tail(evlist, &parse_state.list); 2297 2298 if (ret2 && warn_if_reordered && !parse_state.wild_card_pmus) { 2299 pr_warning("WARNING: events were regrouped to match PMUs\n"); 2300 2301 if (verbose > 0) { 2302 struct strbuf sb = STRBUF_INIT; 2303 2304 evlist__uniquify_evsel_names(evlist, &stat_config); 2305 evlist__format_evsels(evlist, &sb, 2048); 2306 pr_debug("evlist after sorting/fixing: '%s'\n", sb.buf); 2307 strbuf_release(&sb); 2308 } 2309 } 2310 if (!ret) { 2311 struct evsel *last; 2312 2313 last = evlist__last(evlist); 2314 last->cmdline_group_boundary = true; 2315 2316 return 0; 2317 } 2318 2319 /* 2320 * There are 2 users - builtin-record and builtin-test objects. 2321 * Both call evlist__delete in case of error, so we dont 2322 * need to bother. 2323 */ 2324 return ret; 2325 } 2326 2327 int parse_event(struct evlist *evlist, const char *str) 2328 { 2329 struct parse_events_error err; 2330 int ret; 2331 2332 parse_events_error__init(&err); 2333 ret = parse_events(evlist, str, &err); 2334 parse_events_error__exit(&err); 2335 return ret; 2336 } 2337 2338 struct parse_events_error_entry { 2339 /** @list: The list the error is part of. */ 2340 struct list_head list; 2341 /** @idx: index in the parsed string */ 2342 int idx; 2343 /** @str: string to display at the index */ 2344 char *str; 2345 /** @help: optional help string */ 2346 char *help; 2347 }; 2348 2349 void parse_events_error__init(struct parse_events_error *err) 2350 { 2351 INIT_LIST_HEAD(&err->list); 2352 } 2353 2354 void parse_events_error__exit(struct parse_events_error *err) 2355 { 2356 struct parse_events_error_entry *pos, *tmp; 2357 2358 list_for_each_entry_safe(pos, tmp, &err->list, list) { 2359 zfree(&pos->str); 2360 zfree(&pos->help); 2361 list_del_init(&pos->list); 2362 free(pos); 2363 } 2364 } 2365 2366 void parse_events_error__handle(struct parse_events_error *err, int idx, 2367 char *str, char *help) 2368 { 2369 struct parse_events_error_entry *entry; 2370 2371 if (WARN(!str || !err, "WARNING: failed to provide error string or struct\n")) 2372 goto out_free; 2373 2374 entry = zalloc(sizeof(*entry)); 2375 if (!entry) { 2376 pr_err("Failed to allocate memory for event parsing error: %s (%s)\n", 2377 str, help ?: "<no help>"); 2378 goto out_free; 2379 } 2380 entry->idx = idx; 2381 entry->str = str; 2382 entry->help = help; 2383 list_add(&entry->list, &err->list); 2384 return; 2385 out_free: 2386 free(str); 2387 free(help); 2388 } 2389 2390 #define MAX_WIDTH 1000 2391 static int get_term_width(void) 2392 { 2393 struct winsize ws; 2394 2395 get_term_dimensions(&ws); 2396 return ws.ws_col > MAX_WIDTH ? MAX_WIDTH : ws.ws_col; 2397 } 2398 2399 static void __parse_events_error__print(int err_idx, const char *err_str, 2400 const char *err_help, const char *event) 2401 { 2402 const char *str = "invalid or unsupported event: "; 2403 char _buf[MAX_WIDTH]; 2404 char *buf = (char *) event; 2405 int idx = 0; 2406 if (err_str) { 2407 /* -2 for extra '' in the final fprintf */ 2408 int width = get_term_width() - 2; 2409 int len_event = strlen(event); 2410 int len_str, max_len, cut = 0; 2411 2412 /* 2413 * Maximum error index indent, we will cut 2414 * the event string if it's bigger. 2415 */ 2416 int max_err_idx = 13; 2417 2418 /* 2419 * Let's be specific with the message when 2420 * we have the precise error. 2421 */ 2422 str = "event syntax error: "; 2423 len_str = strlen(str); 2424 max_len = width - len_str; 2425 2426 buf = _buf; 2427 2428 /* We're cutting from the beginning. */ 2429 if (err_idx > max_err_idx) 2430 cut = err_idx - max_err_idx; 2431 2432 strncpy(buf, event + cut, max_len); 2433 2434 /* Mark cut parts with '..' on both sides. */ 2435 if (cut) 2436 buf[0] = buf[1] = '.'; 2437 2438 if ((len_event - cut) > max_len) { 2439 buf[max_len - 1] = buf[max_len - 2] = '.'; 2440 buf[max_len] = 0; 2441 } 2442 2443 idx = len_str + err_idx - cut; 2444 } 2445 2446 fprintf(stderr, "%s'%s'\n", str, buf); 2447 if (idx) { 2448 fprintf(stderr, "%*s\\___ %s\n", idx + 1, "", err_str); 2449 if (err_help) 2450 fprintf(stderr, "\n%s\n", err_help); 2451 } 2452 } 2453 2454 void parse_events_error__print(const struct parse_events_error *err, 2455 const char *event) 2456 { 2457 struct parse_events_error_entry *pos; 2458 bool first = true; 2459 2460 list_for_each_entry(pos, &err->list, list) { 2461 if (!first) 2462 fputs("\n", stderr); 2463 __parse_events_error__print(pos->idx, pos->str, pos->help, event); 2464 first = false; 2465 } 2466 } 2467 2468 /* 2469 * In the list of errors err, do any of the error strings (str) contain the 2470 * given needle string? 2471 */ 2472 bool parse_events_error__contains(const struct parse_events_error *err, 2473 const char *needle) 2474 { 2475 struct parse_events_error_entry *pos; 2476 2477 list_for_each_entry(pos, &err->list, list) { 2478 if (strstr(pos->str, needle) != NULL) 2479 return true; 2480 } 2481 return false; 2482 } 2483 2484 #undef MAX_WIDTH 2485 2486 int parse_events_option(const struct option *opt, const char *str, 2487 int unset __maybe_unused) 2488 { 2489 struct parse_events_option_args *args = opt->value; 2490 struct parse_events_error err; 2491 int ret; 2492 2493 parse_events_error__init(&err); 2494 ret = __parse_events(*args->evlistp, str, args->pmu_filter, &err, 2495 /*fake_pmu=*/false, /*warn_if_reordered=*/true, 2496 /*fake_tp=*/false); 2497 2498 if (ret) { 2499 parse_events_error__print(&err, str); 2500 fprintf(stderr, "Run 'perf list' for a list of valid events\n"); 2501 } 2502 parse_events_error__exit(&err); 2503 2504 return ret; 2505 } 2506 2507 int parse_events_option_new_evlist(const struct option *opt, const char *str, int unset) 2508 { 2509 struct parse_events_option_args *args = opt->value; 2510 int ret; 2511 2512 if (*args->evlistp == NULL) { 2513 *args->evlistp = evlist__new(); 2514 2515 if (*args->evlistp == NULL) { 2516 fprintf(stderr, "Not enough memory to create evlist\n"); 2517 return -1; 2518 } 2519 } 2520 ret = parse_events_option(opt, str, unset); 2521 if (ret) { 2522 evlist__delete(*args->evlistp); 2523 *args->evlistp = NULL; 2524 } 2525 2526 return ret; 2527 } 2528 2529 static int 2530 foreach_evsel_in_last_glob(struct evlist *evlist, 2531 int (*func)(struct evsel *evsel, 2532 const void *arg), 2533 const void *arg) 2534 { 2535 struct evsel *last = NULL; 2536 int err; 2537 2538 /* 2539 * Don't return when list_empty, give func a chance to report 2540 * error when it found last == NULL. 2541 * 2542 * So no need to WARN here, let *func do this. 2543 */ 2544 if (evlist->core.nr_entries > 0) 2545 last = evlist__last(evlist); 2546 2547 do { 2548 err = (*func)(last, arg); 2549 if (err) 2550 return -1; 2551 if (!last) 2552 return 0; 2553 2554 if (last->core.node.prev == &evlist->core.entries) 2555 return 0; 2556 last = list_entry(last->core.node.prev, struct evsel, core.node); 2557 } while (!last->cmdline_group_boundary); 2558 2559 return 0; 2560 } 2561 2562 /* Will a tracepoint filter work for str or should a BPF filter be used? */ 2563 static bool is_possible_tp_filter(const char *str) 2564 { 2565 return strstr(str, "uid") == NULL; 2566 } 2567 2568 static int set_filter(struct evsel *evsel, const void *arg) 2569 { 2570 const char *str = arg; 2571 int nr_addr_filters = 0; 2572 struct perf_pmu *pmu; 2573 2574 if (evsel == NULL) { 2575 fprintf(stderr, 2576 "--filter option should follow a -e tracepoint or HW tracer option\n"); 2577 return -1; 2578 } 2579 2580 if (evsel->core.attr.type == PERF_TYPE_TRACEPOINT && is_possible_tp_filter(str)) { 2581 if (evsel__append_tp_filter(evsel, str) < 0) { 2582 fprintf(stderr, 2583 "not enough memory to hold filter string\n"); 2584 return -1; 2585 } 2586 2587 return 0; 2588 } 2589 2590 pmu = evsel__find_pmu(evsel); 2591 if (pmu) { 2592 perf_pmu__scan_file(pmu, "nr_addr_filters", 2593 "%d", &nr_addr_filters); 2594 } 2595 if (!nr_addr_filters) 2596 return perf_bpf_filter__parse(&evsel->bpf_filters, str); 2597 2598 if (evsel__append_addr_filter(evsel, str) < 0) { 2599 fprintf(stderr, 2600 "not enough memory to hold filter string\n"); 2601 return -1; 2602 } 2603 2604 return 0; 2605 } 2606 2607 int parse_filter(const struct option *opt, const char *str, 2608 int unset __maybe_unused) 2609 { 2610 struct evlist *evlist = *(struct evlist **)opt->value; 2611 2612 return foreach_evsel_in_last_glob(evlist, set_filter, 2613 (const void *)str); 2614 } 2615 2616 int parse_uid_filter(struct evlist *evlist, uid_t uid) 2617 { 2618 struct option opt = { 2619 .value = &evlist, 2620 }; 2621 char buf[128]; 2622 int ret; 2623 2624 snprintf(buf, sizeof(buf), "uid == %d", uid); 2625 ret = parse_filter(&opt, buf, /*unset=*/0); 2626 if (ret) { 2627 if (use_browser >= 1) { 2628 /* 2629 * Use ui__warning so a pop up appears above the 2630 * underlying BPF error message. 2631 */ 2632 ui__warning("Failed to add UID filtering that uses BPF filtering.\n"); 2633 } else { 2634 fprintf(stderr, "Failed to add UID filtering that uses BPF filtering.\n"); 2635 } 2636 } 2637 return ret; 2638 } 2639 2640 static int add_exclude_perf_filter(struct evsel *evsel, 2641 const void *arg __maybe_unused) 2642 { 2643 char new_filter[64]; 2644 2645 if (evsel == NULL || evsel->core.attr.type != PERF_TYPE_TRACEPOINT) { 2646 fprintf(stderr, 2647 "--exclude-perf option should follow a -e tracepoint option\n"); 2648 return -1; 2649 } 2650 2651 snprintf(new_filter, sizeof(new_filter), "common_pid != %d", getpid()); 2652 2653 if (evsel__append_tp_filter(evsel, new_filter) < 0) { 2654 fprintf(stderr, 2655 "not enough memory to hold filter string\n"); 2656 return -1; 2657 } 2658 2659 return 0; 2660 } 2661 2662 int exclude_perf(const struct option *opt, 2663 const char *arg __maybe_unused, 2664 int unset __maybe_unused) 2665 { 2666 struct evlist *evlist = *(struct evlist **)opt->value; 2667 2668 return foreach_evsel_in_last_glob(evlist, add_exclude_perf_filter, 2669 NULL); 2670 } 2671 2672 int parse_events__is_hardcoded_term(struct parse_events_term *term) 2673 { 2674 return term->type_term != PARSE_EVENTS__TERM_TYPE_USER; 2675 } 2676 2677 static int new_term(struct parse_events_term **_term, 2678 struct parse_events_term *temp, 2679 char *str, u64 num) 2680 { 2681 struct parse_events_term *term; 2682 2683 term = malloc(sizeof(*term)); 2684 if (!term) 2685 return -ENOMEM; 2686 2687 *term = *temp; 2688 INIT_LIST_HEAD(&term->list); 2689 term->weak = false; 2690 2691 switch (term->type_val) { 2692 case PARSE_EVENTS__TERM_TYPE_NUM: 2693 term->val.num = num; 2694 break; 2695 case PARSE_EVENTS__TERM_TYPE_STR: 2696 term->val.str = str; 2697 break; 2698 default: 2699 free(term); 2700 return -EINVAL; 2701 } 2702 2703 *_term = term; 2704 return 0; 2705 } 2706 2707 int parse_events_term__num(struct parse_events_term **term, 2708 enum parse_events__term_type type_term, 2709 const char *config, u64 num, 2710 bool no_value, 2711 void *loc_term_, void *loc_val_) 2712 { 2713 YYLTYPE *loc_term = loc_term_; 2714 YYLTYPE *loc_val = loc_val_; 2715 2716 struct parse_events_term temp = { 2717 .type_val = PARSE_EVENTS__TERM_TYPE_NUM, 2718 .type_term = type_term, 2719 .config = config ? : strdup(parse_events__term_type_str(type_term)), 2720 .no_value = no_value, 2721 .err_term = loc_term ? loc_term->first_column : 0, 2722 .err_val = loc_val ? loc_val->first_column : 0, 2723 }; 2724 2725 return new_term(term, &temp, /*str=*/NULL, num); 2726 } 2727 2728 int parse_events_term__str(struct parse_events_term **term, 2729 enum parse_events__term_type type_term, 2730 char *config, char *str, 2731 void *loc_term_, void *loc_val_) 2732 { 2733 YYLTYPE *loc_term = loc_term_; 2734 YYLTYPE *loc_val = loc_val_; 2735 2736 struct parse_events_term temp = { 2737 .type_val = PARSE_EVENTS__TERM_TYPE_STR, 2738 .type_term = type_term, 2739 .config = config, 2740 .err_term = loc_term ? loc_term->first_column : 0, 2741 .err_val = loc_val ? loc_val->first_column : 0, 2742 }; 2743 2744 return new_term(term, &temp, str, /*num=*/0); 2745 } 2746 2747 int parse_events_term__term(struct parse_events_term **term, 2748 enum parse_events__term_type term_lhs, 2749 enum parse_events__term_type term_rhs, 2750 void *loc_term, void *loc_val) 2751 { 2752 return parse_events_term__str(term, term_lhs, NULL, 2753 strdup(parse_events__term_type_str(term_rhs)), 2754 loc_term, loc_val); 2755 } 2756 2757 int parse_events_term__clone(struct parse_events_term **new, 2758 const struct parse_events_term *term) 2759 { 2760 char *str; 2761 struct parse_events_term temp = *term; 2762 2763 temp.used = false; 2764 if (term->config) { 2765 temp.config = strdup(term->config); 2766 if (!temp.config) 2767 return -ENOMEM; 2768 } 2769 if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) 2770 return new_term(new, &temp, /*str=*/NULL, term->val.num); 2771 2772 str = strdup(term->val.str); 2773 if (!str) { 2774 zfree(&temp.config); 2775 return -ENOMEM; 2776 } 2777 return new_term(new, &temp, str, /*num=*/0); 2778 } 2779 2780 void parse_events_term__delete(struct parse_events_term *term) 2781 { 2782 if (term->type_val != PARSE_EVENTS__TERM_TYPE_NUM) 2783 zfree(&term->val.str); 2784 2785 zfree(&term->config); 2786 free(term); 2787 } 2788 2789 static int parse_events_terms__copy(const struct parse_events_terms *src, 2790 struct parse_events_terms *dest) 2791 { 2792 struct parse_events_term *term; 2793 2794 list_for_each_entry (term, &src->terms, list) { 2795 struct parse_events_term *n; 2796 int ret; 2797 2798 ret = parse_events_term__clone(&n, term); 2799 if (ret) 2800 return ret; 2801 2802 list_add_tail(&n->list, &dest->terms); 2803 } 2804 return 0; 2805 } 2806 2807 void parse_events_terms__init(struct parse_events_terms *terms) 2808 { 2809 INIT_LIST_HEAD(&terms->terms); 2810 } 2811 2812 void parse_events_terms__exit(struct parse_events_terms *terms) 2813 { 2814 struct parse_events_term *term, *h; 2815 2816 list_for_each_entry_safe(term, h, &terms->terms, list) { 2817 list_del_init(&term->list); 2818 parse_events_term__delete(term); 2819 } 2820 } 2821 2822 void parse_events_terms__delete(struct parse_events_terms *terms) 2823 { 2824 if (!terms) 2825 return; 2826 parse_events_terms__exit(terms); 2827 free(terms); 2828 } 2829 2830 int parse_events_terms__to_strbuf(const struct parse_events_terms *terms, struct strbuf *sb) 2831 { 2832 struct parse_events_term *term; 2833 bool first = true; 2834 2835 if (!terms) 2836 return 0; 2837 2838 list_for_each_entry(term, &terms->terms, list) { 2839 int ret; 2840 2841 if (!first) { 2842 ret = strbuf_addch(sb, ','); 2843 if (ret < 0) 2844 return ret; 2845 } 2846 first = false; 2847 2848 if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) 2849 if (term->no_value) { 2850 assert(term->val.num == 1); 2851 ret = strbuf_addf(sb, "%s", term->config); 2852 } else 2853 ret = strbuf_addf(sb, "%s=%#"PRIx64, term->config, term->val.num); 2854 else if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR) { 2855 if (term->config) { 2856 ret = strbuf_addf(sb, "%s=", term->config); 2857 if (ret < 0) 2858 return ret; 2859 } else if ((unsigned int)term->type_term < __PARSE_EVENTS__TERM_TYPE_NR) { 2860 ret = strbuf_addf(sb, "%s=", 2861 parse_events__term_type_str(term->type_term)); 2862 if (ret < 0) 2863 return ret; 2864 } 2865 assert(!term->no_value); 2866 ret = strbuf_addf(sb, "%s", term->val.str); 2867 } 2868 if (ret < 0) 2869 return ret; 2870 } 2871 return 0; 2872 } 2873 2874 static void config_terms_list(char *buf, size_t buf_sz) 2875 { 2876 int i; 2877 bool first = true; 2878 2879 buf[0] = '\0'; 2880 for (i = 0; i < __PARSE_EVENTS__TERM_TYPE_NR; i++) { 2881 const char *name = parse_events__term_type_str(i); 2882 2883 if (!config_term_avail(i, NULL)) 2884 continue; 2885 if (!name) 2886 continue; 2887 if (name[0] == '<') 2888 continue; 2889 2890 if (strlen(buf) + strlen(name) + 2 >= buf_sz) 2891 return; 2892 2893 if (!first) 2894 strcat(buf, ","); 2895 else 2896 first = false; 2897 strcat(buf, name); 2898 } 2899 } 2900 2901 /* 2902 * Return string contains valid config terms of an event. 2903 * @additional_terms: For terms such as PMU sysfs terms. 2904 */ 2905 char *parse_events_formats_error_string(char *additional_terms) 2906 { 2907 char *str; 2908 /* "no-overwrite" is the longest name */ 2909 char static_terms[__PARSE_EVENTS__TERM_TYPE_NR * 2910 (sizeof("no-overwrite") - 1)]; 2911 2912 config_terms_list(static_terms, sizeof(static_terms)); 2913 /* valid terms */ 2914 if (additional_terms) { 2915 if (asprintf(&str, "valid terms: %s,%s", 2916 additional_terms, static_terms) < 0) 2917 goto fail; 2918 } else { 2919 if (asprintf(&str, "valid terms: %s", static_terms) < 0) 2920 goto fail; 2921 } 2922 return str; 2923 2924 fail: 2925 return NULL; 2926 } 2927