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 if (mod.dont_regroup) 1900 evsel->dont_regroup = true; 1901 } 1902 return 0; 1903 } 1904 1905 int parse_events__modifier_group(struct parse_events_state *parse_state, void *loc, 1906 struct list_head *list, 1907 struct parse_events_modifier mod) 1908 { 1909 return parse_events__modifier_list(parse_state, loc, list, mod, /*group=*/true); 1910 } 1911 1912 int parse_events__modifier_event(struct parse_events_state *parse_state, void *loc, 1913 struct list_head *list, 1914 struct parse_events_modifier mod) 1915 { 1916 return parse_events__modifier_list(parse_state, loc, list, mod, /*group=*/false); 1917 } 1918 1919 int parse_events__set_default_name(struct list_head *list, char *name) 1920 { 1921 struct evsel *evsel; 1922 bool used_name = false; 1923 1924 __evlist__for_each_entry(list, evsel) { 1925 if (!evsel->name) { 1926 evsel->name = used_name ? strdup(name) : name; 1927 used_name = true; 1928 if (!evsel->name) 1929 return -ENOMEM; 1930 } 1931 } 1932 if (!used_name) 1933 free(name); 1934 return 0; 1935 } 1936 1937 static int parse_events__scanner(const char *str, 1938 FILE *input, 1939 struct parse_events_state *parse_state) 1940 { 1941 YY_BUFFER_STATE buffer; 1942 void *scanner; 1943 int ret; 1944 1945 ret = parse_events_lex_init_extra(parse_state, &scanner); 1946 if (ret) 1947 return ret; 1948 1949 if (str) 1950 buffer = parse_events__scan_string(str, scanner); 1951 else 1952 parse_events_set_in(input, scanner); 1953 1954 #ifdef PARSER_DEBUG 1955 parse_events_debug = 1; 1956 parse_events_set_debug(1, scanner); 1957 #endif 1958 ret = parse_events_parse(parse_state, scanner); 1959 1960 if (str) { 1961 parse_events__flush_buffer(buffer, scanner); 1962 parse_events__delete_buffer(buffer, scanner); 1963 } 1964 parse_events_lex_destroy(scanner); 1965 return ret; 1966 } 1967 1968 /* 1969 * parse event config string, return a list of event terms. 1970 */ 1971 int parse_events_terms(struct parse_events_terms *terms, const char *str, FILE *input) 1972 { 1973 struct parse_events_state parse_state = { 1974 .terms = NULL, 1975 .stoken = PE_START_TERMS, 1976 }; 1977 int ret; 1978 1979 ret = parse_events__scanner(str, input, &parse_state); 1980 if (!ret) 1981 list_splice(&parse_state.terms->terms, &terms->terms); 1982 1983 zfree(&parse_state.terms); 1984 return ret; 1985 } 1986 1987 static int evsel__compute_group_pmu_name(struct evsel *evsel, 1988 const struct list_head *head) 1989 { 1990 struct evsel *leader = evsel__leader(evsel); 1991 struct evsel *pos; 1992 const char *group_pmu_name; 1993 struct perf_pmu *pmu = evsel__find_pmu(evsel); 1994 1995 if (!pmu) { 1996 /* 1997 * For PERF_TYPE_HARDWARE and PERF_TYPE_HW_CACHE types the PMU 1998 * is a core PMU, but in heterogeneous systems this is 1999 * unknown. For now pick the first core PMU. 2000 */ 2001 pmu = perf_pmus__scan_core(NULL); 2002 } 2003 if (!pmu) { 2004 pr_debug("No PMU found for '%s'\n", evsel__name(evsel)); 2005 return -EINVAL; 2006 } 2007 group_pmu_name = pmu->name; 2008 /* 2009 * Software events may be in a group with other uncore PMU events. Use 2010 * the pmu_name of the first non-software event to avoid breaking the 2011 * software event out of the group. 2012 * 2013 * Aux event leaders, like intel_pt, expect a group with events from 2014 * other PMUs, so substitute the AUX event's PMU in this case. 2015 */ 2016 if (perf_pmu__is_software(pmu) || evsel__is_aux_event(leader)) { 2017 struct perf_pmu *leader_pmu = evsel__find_pmu(leader); 2018 2019 if (!leader_pmu) { 2020 /* As with determining pmu above. */ 2021 leader_pmu = perf_pmus__scan_core(NULL); 2022 } 2023 /* 2024 * Starting with the leader, find the first event with a named 2025 * non-software PMU. for_each_group_(member|evsel) isn't used as 2026 * the list isn't yet sorted putting evsel's in the same group 2027 * together. 2028 */ 2029 if (leader_pmu && !perf_pmu__is_software(leader_pmu)) { 2030 group_pmu_name = leader_pmu->name; 2031 } else if (leader->core.nr_members > 1) { 2032 list_for_each_entry(pos, head, core.node) { 2033 struct perf_pmu *pos_pmu; 2034 2035 if (pos == leader || evsel__leader(pos) != leader) 2036 continue; 2037 pos_pmu = evsel__find_pmu(pos); 2038 if (!pos_pmu) { 2039 /* As with determining pmu above. */ 2040 pos_pmu = perf_pmus__scan_core(NULL); 2041 } 2042 if (pos_pmu && !perf_pmu__is_software(pos_pmu)) { 2043 group_pmu_name = pos_pmu->name; 2044 break; 2045 } 2046 } 2047 } 2048 } 2049 /* Record computed name. */ 2050 evsel->group_pmu_name = strdup(group_pmu_name); 2051 return evsel->group_pmu_name ? 0 : -ENOMEM; 2052 } 2053 2054 __weak int arch_evlist__cmp(const struct evsel *lhs, const struct evsel *rhs) 2055 { 2056 /* Order by insertion index. */ 2057 return lhs->core.idx - rhs->core.idx; 2058 } 2059 2060 static int evlist__cmp(void *_fg_idx, const struct list_head *l, const struct list_head *r) 2061 { 2062 const struct perf_evsel *lhs_core = container_of(l, struct perf_evsel, node); 2063 const struct evsel *lhs = container_of(lhs_core, struct evsel, core); 2064 const struct perf_evsel *rhs_core = container_of(r, struct perf_evsel, node); 2065 const struct evsel *rhs = container_of(rhs_core, struct evsel, core); 2066 int *force_grouped_idx = _fg_idx; 2067 int lhs_sort_idx, rhs_sort_idx, ret; 2068 const char *lhs_pmu_name, *rhs_pmu_name; 2069 2070 /* 2071 * Get the indexes of the 2 events to sort. If the events are 2072 * in groups then the leader's index is used otherwise the 2073 * event's index is used. An index may be forced for events that 2074 * must be in the same group, namely Intel topdown events. 2075 */ 2076 if (*force_grouped_idx != -1 && arch_evsel__must_be_in_group(lhs)) { 2077 lhs_sort_idx = *force_grouped_idx; 2078 } else { 2079 bool lhs_has_group = lhs_core->leader != lhs_core || lhs_core->nr_members > 1; 2080 2081 lhs_sort_idx = lhs_has_group ? lhs_core->leader->idx : lhs_core->idx; 2082 } 2083 if (*force_grouped_idx != -1 && arch_evsel__must_be_in_group(rhs)) { 2084 rhs_sort_idx = *force_grouped_idx; 2085 } else { 2086 bool rhs_has_group = rhs_core->leader != rhs_core || rhs_core->nr_members > 1; 2087 2088 rhs_sort_idx = rhs_has_group ? rhs_core->leader->idx : rhs_core->idx; 2089 } 2090 2091 /* If the indices differ then respect the insertion order. */ 2092 if (lhs_sort_idx != rhs_sort_idx) 2093 return lhs_sort_idx - rhs_sort_idx; 2094 2095 /* 2096 * Ignoring forcing, lhs_sort_idx == rhs_sort_idx so lhs and rhs should 2097 * be in the same group. Events in the same group need to be ordered by 2098 * their grouping PMU name as the group will be broken to ensure only 2099 * events on the same PMU are programmed together. 2100 * 2101 * With forcing the lhs_sort_idx == rhs_sort_idx shows that one or both 2102 * events are being forced to be at force_group_index. If only one event 2103 * is being forced then the other event is the group leader of the group 2104 * we're trying to force the event into. Ensure for the force grouped 2105 * case that the PMU name ordering is also respected. 2106 */ 2107 lhs_pmu_name = lhs->group_pmu_name; 2108 rhs_pmu_name = rhs->group_pmu_name; 2109 ret = strcmp(lhs_pmu_name, rhs_pmu_name); 2110 if (ret) 2111 return ret; 2112 2113 /* 2114 * Architecture specific sorting, by default sort events in the same 2115 * group with the same PMU by their insertion index. On Intel topdown 2116 * constraints must be adhered to - slots first, etc. 2117 */ 2118 return arch_evlist__cmp(lhs, rhs); 2119 } 2120 2121 int __weak arch_evlist__add_required_events(struct list_head *list __always_unused) 2122 { 2123 return 0; 2124 } 2125 2126 static int parse_events__sort_events_and_fix_groups(struct list_head *list) 2127 { 2128 int idx = 0, force_grouped_idx = -1; 2129 struct evsel *pos, *cur_leader = NULL; 2130 struct perf_evsel *cur_leaders_grp = NULL; 2131 bool idx_changed = false; 2132 int orig_num_leaders = 0, num_leaders = 0; 2133 int ret; 2134 struct evsel *force_grouped_leader = NULL; 2135 bool last_event_was_forced_leader = false; 2136 2137 /* On x86 topdown metrics events require a slots event. */ 2138 ret = arch_evlist__add_required_events(list); 2139 if (ret) 2140 return ret; 2141 2142 /* 2143 * Compute index to insert ungrouped events at. Place them where the 2144 * first ungrouped event appears. 2145 */ 2146 list_for_each_entry(pos, list, core.node) { 2147 const struct evsel *pos_leader = evsel__leader(pos); 2148 2149 ret = evsel__compute_group_pmu_name(pos, list); 2150 if (ret) 2151 return ret; 2152 2153 if (pos == pos_leader) 2154 orig_num_leaders++; 2155 2156 /* 2157 * Ensure indexes are sequential, in particular for multiple 2158 * event lists being merged. The indexes are used to detect when 2159 * the user order is modified. 2160 */ 2161 pos->core.idx = idx++; 2162 2163 /* 2164 * Remember an index to sort all forced grouped events 2165 * together to. Use the group leader as some events 2166 * must appear first within the group. 2167 */ 2168 if (force_grouped_idx == -1 && arch_evsel__must_be_in_group(pos)) 2169 force_grouped_idx = pos_leader->core.idx; 2170 } 2171 2172 /* Sort events. */ 2173 list_sort(&force_grouped_idx, list, evlist__cmp); 2174 2175 /* 2176 * Recompute groups, splitting for PMUs and adding groups for events 2177 * that require them. 2178 */ 2179 idx = 0; 2180 list_for_each_entry(pos, list, core.node) { 2181 const struct evsel *pos_leader = evsel__leader(pos); 2182 const char *pos_pmu_name = pos->group_pmu_name; 2183 const char *cur_leader_pmu_name; 2184 bool pos_force_grouped = force_grouped_idx != -1 && 2185 arch_evsel__must_be_in_group(pos); 2186 2187 /* Reset index and nr_members. */ 2188 if (pos->core.idx != idx) 2189 idx_changed = true; 2190 pos->core.idx = idx++; 2191 pos->core.nr_members = 0; 2192 2193 /* 2194 * Set the group leader respecting the given groupings and that 2195 * groups can't span PMUs. 2196 */ 2197 if (!cur_leader || pos->dont_regroup) { 2198 cur_leader = pos; 2199 cur_leaders_grp = &pos->core; 2200 if (pos_force_grouped) 2201 force_grouped_leader = pos; 2202 } 2203 cur_leader_pmu_name = cur_leader->group_pmu_name; 2204 if (strcmp(cur_leader_pmu_name, pos_pmu_name)) { 2205 /* PMU changed so the group/leader must change. */ 2206 cur_leader = pos; 2207 cur_leaders_grp = pos->core.leader; 2208 if (pos_force_grouped && force_grouped_leader == NULL) 2209 force_grouped_leader = pos; 2210 } else if (cur_leaders_grp != pos->core.leader) { 2211 bool split_even_if_last_leader_was_forced = true; 2212 2213 /* 2214 * Event is for a different group. If the last event was 2215 * the forced group leader then subsequent group events 2216 * and forced events should be in the same group. If 2217 * there are no other forced group events then the 2218 * forced group leader wasn't really being forced into a 2219 * group, it just set arch_evsel__must_be_in_group, and 2220 * we don't want the group to split here. 2221 */ 2222 if (force_grouped_idx != -1 && last_event_was_forced_leader) { 2223 struct evsel *pos2 = pos; 2224 /* 2225 * Search the whole list as the group leaders 2226 * aren't currently valid. 2227 */ 2228 list_for_each_entry_continue(pos2, list, core.node) { 2229 if (pos->core.leader == pos2->core.leader && 2230 arch_evsel__must_be_in_group(pos2)) { 2231 split_even_if_last_leader_was_forced = false; 2232 break; 2233 } 2234 } 2235 } 2236 if (!last_event_was_forced_leader || split_even_if_last_leader_was_forced) { 2237 if (pos_force_grouped) { 2238 if (force_grouped_leader) { 2239 cur_leader = force_grouped_leader; 2240 cur_leaders_grp = force_grouped_leader->core.leader; 2241 } else { 2242 cur_leader = force_grouped_leader = pos; 2243 cur_leaders_grp = &pos->core; 2244 } 2245 } else { 2246 cur_leader = pos; 2247 cur_leaders_grp = pos->core.leader; 2248 } 2249 } 2250 } 2251 if (pos_leader != cur_leader) { 2252 /* The leader changed so update it. */ 2253 evsel__set_leader(pos, cur_leader); 2254 } 2255 last_event_was_forced_leader = (force_grouped_leader == pos); 2256 } 2257 list_for_each_entry(pos, list, core.node) { 2258 struct evsel *pos_leader = evsel__leader(pos); 2259 2260 if (pos == pos_leader) 2261 num_leaders++; 2262 pos_leader->core.nr_members++; 2263 } 2264 return (idx_changed || num_leaders != orig_num_leaders) ? 1 : 0; 2265 } 2266 2267 int __parse_events(struct evlist *evlist, const char *str, const char *pmu_filter, 2268 struct parse_events_error *err, bool fake_pmu, 2269 bool warn_if_reordered, bool fake_tp) 2270 { 2271 struct parse_events_state parse_state = { 2272 .list = LIST_HEAD_INIT(parse_state.list), 2273 .idx = evlist->core.nr_entries, 2274 .error = err, 2275 .stoken = PE_START_EVENTS, 2276 .fake_pmu = fake_pmu, 2277 .fake_tp = fake_tp, 2278 .pmu_filter = pmu_filter, 2279 .match_legacy_cache_terms = true, 2280 }; 2281 int ret, ret2; 2282 2283 ret = parse_events__scanner(str, /*input=*/ NULL, &parse_state); 2284 2285 if (!ret && list_empty(&parse_state.list)) { 2286 WARN_ONCE(true, "WARNING: event parser found nothing\n"); 2287 return -1; 2288 } 2289 2290 ret2 = parse_events__sort_events_and_fix_groups(&parse_state.list); 2291 if (ret2 < 0) 2292 return ret; 2293 2294 /* 2295 * Add list to the evlist even with errors to allow callers to clean up. 2296 */ 2297 evlist__splice_list_tail(evlist, &parse_state.list); 2298 2299 if (ret2 && warn_if_reordered && !parse_state.wild_card_pmus) { 2300 pr_warning("WARNING: events were regrouped to match PMUs\n"); 2301 2302 if (verbose > 0) { 2303 struct strbuf sb = STRBUF_INIT; 2304 2305 evlist__uniquify_evsel_names(evlist, &stat_config); 2306 evlist__format_evsels(evlist, &sb, 2048); 2307 pr_debug("evlist after sorting/fixing: '%s'\n", sb.buf); 2308 strbuf_release(&sb); 2309 } 2310 } 2311 if (!ret) { 2312 struct evsel *last; 2313 2314 last = evlist__last(evlist); 2315 last->cmdline_group_boundary = true; 2316 2317 return 0; 2318 } 2319 2320 /* 2321 * There are 2 users - builtin-record and builtin-test objects. 2322 * Both call evlist__delete in case of error, so we dont 2323 * need to bother. 2324 */ 2325 return ret; 2326 } 2327 2328 int parse_event(struct evlist *evlist, const char *str) 2329 { 2330 struct parse_events_error err; 2331 int ret; 2332 2333 parse_events_error__init(&err); 2334 ret = parse_events(evlist, str, &err); 2335 parse_events_error__exit(&err); 2336 return ret; 2337 } 2338 2339 struct parse_events_error_entry { 2340 /** @list: The list the error is part of. */ 2341 struct list_head list; 2342 /** @idx: index in the parsed string */ 2343 int idx; 2344 /** @str: string to display at the index */ 2345 char *str; 2346 /** @help: optional help string */ 2347 char *help; 2348 }; 2349 2350 void parse_events_error__init(struct parse_events_error *err) 2351 { 2352 INIT_LIST_HEAD(&err->list); 2353 } 2354 2355 void parse_events_error__exit(struct parse_events_error *err) 2356 { 2357 struct parse_events_error_entry *pos, *tmp; 2358 2359 list_for_each_entry_safe(pos, tmp, &err->list, list) { 2360 zfree(&pos->str); 2361 zfree(&pos->help); 2362 list_del_init(&pos->list); 2363 free(pos); 2364 } 2365 } 2366 2367 void parse_events_error__handle(struct parse_events_error *err, int idx, 2368 char *str, char *help) 2369 { 2370 struct parse_events_error_entry *entry; 2371 2372 if (WARN(!str || !err, "WARNING: failed to provide error string or struct\n")) 2373 goto out_free; 2374 2375 entry = zalloc(sizeof(*entry)); 2376 if (!entry) { 2377 pr_err("Failed to allocate memory for event parsing error: %s (%s)\n", 2378 str, help ?: "<no help>"); 2379 goto out_free; 2380 } 2381 entry->idx = idx; 2382 entry->str = str; 2383 entry->help = help; 2384 list_add(&entry->list, &err->list); 2385 return; 2386 out_free: 2387 free(str); 2388 free(help); 2389 } 2390 2391 #define MAX_WIDTH 1000 2392 static int get_term_width(void) 2393 { 2394 struct winsize ws; 2395 2396 get_term_dimensions(&ws); 2397 return ws.ws_col > MAX_WIDTH ? MAX_WIDTH : ws.ws_col; 2398 } 2399 2400 static void __parse_events_error__print(int err_idx, const char *err_str, 2401 const char *err_help, const char *event) 2402 { 2403 const char *str = "invalid or unsupported event: "; 2404 char _buf[MAX_WIDTH]; 2405 char *buf = (char *) event; 2406 int idx = 0; 2407 if (err_str) { 2408 /* -2 for extra '' in the final fprintf */ 2409 int width = get_term_width() - 2; 2410 int len_event = strlen(event); 2411 int len_str, max_len, cut = 0; 2412 2413 /* 2414 * Maximum error index indent, we will cut 2415 * the event string if it's bigger. 2416 */ 2417 int max_err_idx = 13; 2418 2419 /* 2420 * Let's be specific with the message when 2421 * we have the precise error. 2422 */ 2423 str = "event syntax error: "; 2424 len_str = strlen(str); 2425 max_len = width - len_str; 2426 2427 buf = _buf; 2428 2429 /* We're cutting from the beginning. */ 2430 if (err_idx > max_err_idx) 2431 cut = err_idx - max_err_idx; 2432 2433 strncpy(buf, event + cut, max_len); 2434 2435 /* Mark cut parts with '..' on both sides. */ 2436 if (cut) 2437 buf[0] = buf[1] = '.'; 2438 2439 if ((len_event - cut) > max_len) { 2440 buf[max_len - 1] = buf[max_len - 2] = '.'; 2441 buf[max_len] = 0; 2442 } 2443 2444 idx = len_str + err_idx - cut; 2445 } 2446 2447 fprintf(stderr, "%s'%s'\n", str, buf); 2448 if (idx) { 2449 fprintf(stderr, "%*s\\___ %s\n", idx + 1, "", err_str); 2450 if (err_help) 2451 fprintf(stderr, "\n%s\n", err_help); 2452 } 2453 } 2454 2455 void parse_events_error__print(const struct parse_events_error *err, 2456 const char *event) 2457 { 2458 struct parse_events_error_entry *pos; 2459 bool first = true; 2460 2461 list_for_each_entry(pos, &err->list, list) { 2462 if (!first) 2463 fputs("\n", stderr); 2464 __parse_events_error__print(pos->idx, pos->str, pos->help, event); 2465 first = false; 2466 } 2467 } 2468 2469 /* 2470 * In the list of errors err, do any of the error strings (str) contain the 2471 * given needle string? 2472 */ 2473 bool parse_events_error__contains(const struct parse_events_error *err, 2474 const char *needle) 2475 { 2476 struct parse_events_error_entry *pos; 2477 2478 list_for_each_entry(pos, &err->list, list) { 2479 if (strstr(pos->str, needle) != NULL) 2480 return true; 2481 } 2482 return false; 2483 } 2484 2485 #undef MAX_WIDTH 2486 2487 int parse_events_option(const struct option *opt, const char *str, 2488 int unset __maybe_unused) 2489 { 2490 struct parse_events_option_args *args = opt->value; 2491 struct parse_events_error err; 2492 int ret; 2493 2494 parse_events_error__init(&err); 2495 ret = __parse_events(*args->evlistp, str, args->pmu_filter, &err, 2496 /*fake_pmu=*/false, /*warn_if_reordered=*/true, 2497 /*fake_tp=*/false); 2498 2499 if (ret) { 2500 parse_events_error__print(&err, str); 2501 fprintf(stderr, "Run 'perf list' for a list of valid events\n"); 2502 } 2503 parse_events_error__exit(&err); 2504 2505 return ret; 2506 } 2507 2508 int parse_events_option_new_evlist(const struct option *opt, const char *str, int unset) 2509 { 2510 struct parse_events_option_args *args = opt->value; 2511 int ret; 2512 2513 if (*args->evlistp == NULL) { 2514 *args->evlistp = evlist__new(); 2515 2516 if (*args->evlistp == NULL) { 2517 fprintf(stderr, "Not enough memory to create evlist\n"); 2518 return -1; 2519 } 2520 } 2521 ret = parse_events_option(opt, str, unset); 2522 if (ret) { 2523 evlist__delete(*args->evlistp); 2524 *args->evlistp = NULL; 2525 } 2526 2527 return ret; 2528 } 2529 2530 static int 2531 foreach_evsel_in_last_glob(struct evlist *evlist, 2532 int (*func)(struct evsel *evsel, 2533 const void *arg), 2534 const void *arg) 2535 { 2536 struct evsel *last = NULL; 2537 int err; 2538 2539 /* 2540 * Don't return when list_empty, give func a chance to report 2541 * error when it found last == NULL. 2542 * 2543 * So no need to WARN here, let *func do this. 2544 */ 2545 if (evlist->core.nr_entries > 0) 2546 last = evlist__last(evlist); 2547 2548 do { 2549 err = (*func)(last, arg); 2550 if (err) 2551 return -1; 2552 if (!last) 2553 return 0; 2554 2555 if (last->core.node.prev == &evlist->core.entries) 2556 return 0; 2557 last = list_entry(last->core.node.prev, struct evsel, core.node); 2558 } while (!last->cmdline_group_boundary); 2559 2560 return 0; 2561 } 2562 2563 /* Will a tracepoint filter work for str or should a BPF filter be used? */ 2564 static bool is_possible_tp_filter(const char *str) 2565 { 2566 return strstr(str, "uid") == NULL; 2567 } 2568 2569 static int set_filter(struct evsel *evsel, const void *arg) 2570 { 2571 const char *str = arg; 2572 int nr_addr_filters = 0; 2573 struct perf_pmu *pmu; 2574 2575 if (evsel == NULL) { 2576 fprintf(stderr, 2577 "--filter option should follow a -e tracepoint or HW tracer option\n"); 2578 return -1; 2579 } 2580 2581 if (evsel->core.attr.type == PERF_TYPE_TRACEPOINT && is_possible_tp_filter(str)) { 2582 if (evsel__append_tp_filter(evsel, str) < 0) { 2583 fprintf(stderr, 2584 "not enough memory to hold filter string\n"); 2585 return -1; 2586 } 2587 2588 return 0; 2589 } 2590 2591 pmu = evsel__find_pmu(evsel); 2592 if (pmu) { 2593 perf_pmu__scan_file(pmu, "nr_addr_filters", 2594 "%d", &nr_addr_filters); 2595 } 2596 if (!nr_addr_filters) 2597 return perf_bpf_filter__parse(&evsel->bpf_filters, str); 2598 2599 if (evsel__append_addr_filter(evsel, str) < 0) { 2600 fprintf(stderr, 2601 "not enough memory to hold filter string\n"); 2602 return -1; 2603 } 2604 2605 return 0; 2606 } 2607 2608 int parse_filter(const struct option *opt, const char *str, 2609 int unset __maybe_unused) 2610 { 2611 struct evlist *evlist = *(struct evlist **)opt->value; 2612 2613 return foreach_evsel_in_last_glob(evlist, set_filter, 2614 (const void *)str); 2615 } 2616 2617 int parse_uid_filter(struct evlist *evlist, uid_t uid) 2618 { 2619 struct option opt = { 2620 .value = &evlist, 2621 }; 2622 char buf[128]; 2623 int ret; 2624 2625 snprintf(buf, sizeof(buf), "uid == %d", uid); 2626 ret = parse_filter(&opt, buf, /*unset=*/0); 2627 if (ret) { 2628 if (use_browser >= 1) { 2629 /* 2630 * Use ui__warning so a pop up appears above the 2631 * underlying BPF error message. 2632 */ 2633 ui__warning("Failed to add UID filtering that uses BPF filtering.\n"); 2634 } else { 2635 fprintf(stderr, "Failed to add UID filtering that uses BPF filtering.\n"); 2636 } 2637 } 2638 return ret; 2639 } 2640 2641 static int add_exclude_perf_filter(struct evsel *evsel, 2642 const void *arg __maybe_unused) 2643 { 2644 char new_filter[64]; 2645 2646 if (evsel == NULL || evsel->core.attr.type != PERF_TYPE_TRACEPOINT) { 2647 fprintf(stderr, 2648 "--exclude-perf option should follow a -e tracepoint option\n"); 2649 return -1; 2650 } 2651 2652 snprintf(new_filter, sizeof(new_filter), "common_pid != %d", getpid()); 2653 2654 if (evsel__append_tp_filter(evsel, new_filter) < 0) { 2655 fprintf(stderr, 2656 "not enough memory to hold filter string\n"); 2657 return -1; 2658 } 2659 2660 return 0; 2661 } 2662 2663 int exclude_perf(const struct option *opt, 2664 const char *arg __maybe_unused, 2665 int unset __maybe_unused) 2666 { 2667 struct evlist *evlist = *(struct evlist **)opt->value; 2668 2669 return foreach_evsel_in_last_glob(evlist, add_exclude_perf_filter, 2670 NULL); 2671 } 2672 2673 int parse_events__is_hardcoded_term(struct parse_events_term *term) 2674 { 2675 return term->type_term != PARSE_EVENTS__TERM_TYPE_USER; 2676 } 2677 2678 static int new_term(struct parse_events_term **_term, 2679 struct parse_events_term *temp, 2680 char *str, u64 num) 2681 { 2682 struct parse_events_term *term; 2683 2684 term = malloc(sizeof(*term)); 2685 if (!term) 2686 return -ENOMEM; 2687 2688 *term = *temp; 2689 INIT_LIST_HEAD(&term->list); 2690 term->weak = false; 2691 2692 switch (term->type_val) { 2693 case PARSE_EVENTS__TERM_TYPE_NUM: 2694 term->val.num = num; 2695 break; 2696 case PARSE_EVENTS__TERM_TYPE_STR: 2697 term->val.str = str; 2698 break; 2699 default: 2700 free(term); 2701 return -EINVAL; 2702 } 2703 2704 *_term = term; 2705 return 0; 2706 } 2707 2708 int parse_events_term__num(struct parse_events_term **term, 2709 enum parse_events__term_type type_term, 2710 const char *config, u64 num, 2711 bool no_value, 2712 void *loc_term_, void *loc_val_) 2713 { 2714 YYLTYPE *loc_term = loc_term_; 2715 YYLTYPE *loc_val = loc_val_; 2716 2717 struct parse_events_term temp = { 2718 .type_val = PARSE_EVENTS__TERM_TYPE_NUM, 2719 .type_term = type_term, 2720 .config = config ? : strdup(parse_events__term_type_str(type_term)), 2721 .no_value = no_value, 2722 .err_term = loc_term ? loc_term->first_column : 0, 2723 .err_val = loc_val ? loc_val->first_column : 0, 2724 }; 2725 2726 return new_term(term, &temp, /*str=*/NULL, num); 2727 } 2728 2729 int parse_events_term__str(struct parse_events_term **term, 2730 enum parse_events__term_type type_term, 2731 char *config, char *str, 2732 void *loc_term_, void *loc_val_) 2733 { 2734 YYLTYPE *loc_term = loc_term_; 2735 YYLTYPE *loc_val = loc_val_; 2736 2737 struct parse_events_term temp = { 2738 .type_val = PARSE_EVENTS__TERM_TYPE_STR, 2739 .type_term = type_term, 2740 .config = config, 2741 .err_term = loc_term ? loc_term->first_column : 0, 2742 .err_val = loc_val ? loc_val->first_column : 0, 2743 }; 2744 2745 return new_term(term, &temp, str, /*num=*/0); 2746 } 2747 2748 int parse_events_term__term(struct parse_events_term **term, 2749 enum parse_events__term_type term_lhs, 2750 enum parse_events__term_type term_rhs, 2751 void *loc_term, void *loc_val) 2752 { 2753 return parse_events_term__str(term, term_lhs, NULL, 2754 strdup(parse_events__term_type_str(term_rhs)), 2755 loc_term, loc_val); 2756 } 2757 2758 int parse_events_term__clone(struct parse_events_term **new, 2759 const struct parse_events_term *term) 2760 { 2761 char *str; 2762 struct parse_events_term temp = *term; 2763 2764 temp.used = false; 2765 if (term->config) { 2766 temp.config = strdup(term->config); 2767 if (!temp.config) 2768 return -ENOMEM; 2769 } 2770 if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) 2771 return new_term(new, &temp, /*str=*/NULL, term->val.num); 2772 2773 str = strdup(term->val.str); 2774 if (!str) { 2775 zfree(&temp.config); 2776 return -ENOMEM; 2777 } 2778 return new_term(new, &temp, str, /*num=*/0); 2779 } 2780 2781 void parse_events_term__delete(struct parse_events_term *term) 2782 { 2783 if (term->type_val != PARSE_EVENTS__TERM_TYPE_NUM) 2784 zfree(&term->val.str); 2785 2786 zfree(&term->config); 2787 free(term); 2788 } 2789 2790 static int parse_events_terms__copy(const struct parse_events_terms *src, 2791 struct parse_events_terms *dest) 2792 { 2793 struct parse_events_term *term; 2794 2795 list_for_each_entry (term, &src->terms, list) { 2796 struct parse_events_term *n; 2797 int ret; 2798 2799 ret = parse_events_term__clone(&n, term); 2800 if (ret) 2801 return ret; 2802 2803 list_add_tail(&n->list, &dest->terms); 2804 } 2805 return 0; 2806 } 2807 2808 void parse_events_terms__init(struct parse_events_terms *terms) 2809 { 2810 INIT_LIST_HEAD(&terms->terms); 2811 } 2812 2813 void parse_events_terms__exit(struct parse_events_terms *terms) 2814 { 2815 struct parse_events_term *term, *h; 2816 2817 list_for_each_entry_safe(term, h, &terms->terms, list) { 2818 list_del_init(&term->list); 2819 parse_events_term__delete(term); 2820 } 2821 } 2822 2823 void parse_events_terms__delete(struct parse_events_terms *terms) 2824 { 2825 if (!terms) 2826 return; 2827 parse_events_terms__exit(terms); 2828 free(terms); 2829 } 2830 2831 int parse_events_terms__to_strbuf(const struct parse_events_terms *terms, struct strbuf *sb) 2832 { 2833 struct parse_events_term *term; 2834 bool first = true; 2835 2836 if (!terms) 2837 return 0; 2838 2839 list_for_each_entry(term, &terms->terms, list) { 2840 int ret; 2841 2842 if (!first) { 2843 ret = strbuf_addch(sb, ','); 2844 if (ret < 0) 2845 return ret; 2846 } 2847 first = false; 2848 2849 if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) 2850 if (term->no_value) { 2851 assert(term->val.num == 1); 2852 ret = strbuf_addf(sb, "%s", term->config); 2853 } else 2854 ret = strbuf_addf(sb, "%s=%#"PRIx64, term->config, term->val.num); 2855 else if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR) { 2856 if (term->config) { 2857 ret = strbuf_addf(sb, "%s=", term->config); 2858 if (ret < 0) 2859 return ret; 2860 } else if ((unsigned int)term->type_term < __PARSE_EVENTS__TERM_TYPE_NR) { 2861 ret = strbuf_addf(sb, "%s=", 2862 parse_events__term_type_str(term->type_term)); 2863 if (ret < 0) 2864 return ret; 2865 } 2866 assert(!term->no_value); 2867 ret = strbuf_addf(sb, "%s", term->val.str); 2868 } 2869 if (ret < 0) 2870 return ret; 2871 } 2872 return 0; 2873 } 2874 2875 static void config_terms_list(char *buf, size_t buf_sz) 2876 { 2877 int i; 2878 bool first = true; 2879 2880 buf[0] = '\0'; 2881 for (i = 0; i < __PARSE_EVENTS__TERM_TYPE_NR; i++) { 2882 const char *name = parse_events__term_type_str(i); 2883 2884 if (!config_term_avail(i, NULL)) 2885 continue; 2886 if (!name) 2887 continue; 2888 if (name[0] == '<') 2889 continue; 2890 2891 if (strlen(buf) + strlen(name) + 2 >= buf_sz) 2892 return; 2893 2894 if (!first) 2895 strcat(buf, ","); 2896 else 2897 first = false; 2898 strcat(buf, name); 2899 } 2900 } 2901 2902 /* 2903 * Return string contains valid config terms of an event. 2904 * @additional_terms: For terms such as PMU sysfs terms. 2905 */ 2906 char *parse_events_formats_error_string(char *additional_terms) 2907 { 2908 char *str; 2909 /* "no-overwrite" is the longest name */ 2910 char static_terms[__PARSE_EVENTS__TERM_TYPE_NR * 2911 (sizeof("no-overwrite") - 1)]; 2912 2913 config_terms_list(static_terms, sizeof(static_terms)); 2914 /* valid terms */ 2915 if (additional_terms) { 2916 if (asprintf(&str, "valid terms: %s,%s", 2917 additional_terms, static_terms) < 0) 2918 goto fail; 2919 } else { 2920 if (asprintf(&str, "valid terms: %s", static_terms) < 0) 2921 goto fail; 2922 } 2923 return str; 2924 2925 fail: 2926 return NULL; 2927 } 2928