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 <api/fs/tracing_path.h> 21 #include <api/io_dir.h> 22 #include <perf/cpumap.h> 23 #include <util/parse-events-bison.h> 24 #include <util/parse-events-flex.h> 25 #include "pmu.h" 26 #include "pmus.h" 27 #include "asm/bug.h" 28 #include "ui/ui.h" 29 #include "util/parse-branch-options.h" 30 #include "util/evsel_config.h" 31 #include "util/event.h" 32 #include "util/bpf-filter.h" 33 #include "util/stat.h" 34 #include "util/util.h" 35 #include "tracepoint.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 const struct event_symbol event_symbols_sw[PERF_COUNT_SW_MAX] = { 88 [PERF_COUNT_SW_CPU_CLOCK] = { 89 .symbol = "cpu-clock", 90 .alias = "", 91 }, 92 [PERF_COUNT_SW_TASK_CLOCK] = { 93 .symbol = "task-clock", 94 .alias = "", 95 }, 96 [PERF_COUNT_SW_PAGE_FAULTS] = { 97 .symbol = "page-faults", 98 .alias = "faults", 99 }, 100 [PERF_COUNT_SW_CONTEXT_SWITCHES] = { 101 .symbol = "context-switches", 102 .alias = "cs", 103 }, 104 [PERF_COUNT_SW_CPU_MIGRATIONS] = { 105 .symbol = "cpu-migrations", 106 .alias = "migrations", 107 }, 108 [PERF_COUNT_SW_PAGE_FAULTS_MIN] = { 109 .symbol = "minor-faults", 110 .alias = "", 111 }, 112 [PERF_COUNT_SW_PAGE_FAULTS_MAJ] = { 113 .symbol = "major-faults", 114 .alias = "", 115 }, 116 [PERF_COUNT_SW_ALIGNMENT_FAULTS] = { 117 .symbol = "alignment-faults", 118 .alias = "", 119 }, 120 [PERF_COUNT_SW_EMULATION_FAULTS] = { 121 .symbol = "emulation-faults", 122 .alias = "", 123 }, 124 [PERF_COUNT_SW_DUMMY] = { 125 .symbol = "dummy", 126 .alias = "", 127 }, 128 [PERF_COUNT_SW_BPF_OUTPUT] = { 129 .symbol = "bpf-output", 130 .alias = "", 131 }, 132 [PERF_COUNT_SW_CGROUP_SWITCHES] = { 133 .symbol = "cgroup-switches", 134 .alias = "", 135 }, 136 }; 137 138 const char *event_type(int type) 139 { 140 switch (type) { 141 case PERF_TYPE_HARDWARE: 142 return "hardware"; 143 144 case PERF_TYPE_SOFTWARE: 145 return "software"; 146 147 case PERF_TYPE_TRACEPOINT: 148 return "tracepoint"; 149 150 case PERF_TYPE_HW_CACHE: 151 return "hardware-cache"; 152 153 default: 154 break; 155 } 156 157 return "unknown"; 158 } 159 160 static char *get_config_str(const struct parse_events_terms *head_terms, 161 enum parse_events__term_type type_term) 162 { 163 struct parse_events_term *term; 164 165 if (!head_terms) 166 return NULL; 167 168 list_for_each_entry(term, &head_terms->terms, list) 169 if (term->type_term == type_term) 170 return term->val.str; 171 172 return NULL; 173 } 174 175 static char *get_config_metric_id(const struct parse_events_terms *head_terms) 176 { 177 return get_config_str(head_terms, PARSE_EVENTS__TERM_TYPE_METRIC_ID); 178 } 179 180 static char *get_config_name(const struct parse_events_terms *head_terms) 181 { 182 return get_config_str(head_terms, PARSE_EVENTS__TERM_TYPE_NAME); 183 } 184 185 static struct perf_cpu_map *get_config_cpu(const struct parse_events_terms *head_terms) 186 { 187 struct parse_events_term *term; 188 struct perf_cpu_map *cpus = NULL; 189 190 if (!head_terms) 191 return NULL; 192 193 list_for_each_entry(term, &head_terms->terms, list) { 194 if (term->type_term == PARSE_EVENTS__TERM_TYPE_CPU) { 195 struct perf_cpu_map *cpu = perf_cpu_map__new_int(term->val.num); 196 197 perf_cpu_map__merge(&cpus, cpu); 198 perf_cpu_map__put(cpu); 199 } 200 } 201 202 return cpus; 203 } 204 205 /** 206 * fix_raw - For each raw term see if there is an event (aka alias) in pmu that 207 * matches the raw's string value. If the string value matches an 208 * event then change the term to be an event, if not then change it to 209 * be a config term. For example, "read" may be an event of the PMU or 210 * a raw hex encoding of 0xead. The fix-up is done late so the PMU of 211 * the event can be determined and we don't need to scan all PMUs 212 * ahead-of-time. 213 * @config_terms: the list of terms that may contain a raw term. 214 * @pmu: the PMU to scan for events from. 215 */ 216 static void fix_raw(struct parse_events_terms *config_terms, struct perf_pmu *pmu) 217 { 218 struct parse_events_term *term; 219 220 list_for_each_entry(term, &config_terms->terms, list) { 221 u64 num; 222 223 if (term->type_term != PARSE_EVENTS__TERM_TYPE_RAW) 224 continue; 225 226 if (perf_pmu__have_event(pmu, term->val.str)) { 227 zfree(&term->config); 228 term->config = term->val.str; 229 term->type_val = PARSE_EVENTS__TERM_TYPE_NUM; 230 term->type_term = PARSE_EVENTS__TERM_TYPE_USER; 231 term->val.num = 1; 232 term->no_value = true; 233 continue; 234 } 235 236 zfree(&term->config); 237 term->config = strdup("config"); 238 errno = 0; 239 num = strtoull(term->val.str + 1, NULL, 16); 240 assert(errno == 0); 241 free(term->val.str); 242 term->type_val = PARSE_EVENTS__TERM_TYPE_NUM; 243 term->type_term = PARSE_EVENTS__TERM_TYPE_CONFIG; 244 term->val.num = num; 245 term->no_value = false; 246 } 247 } 248 249 static struct evsel * 250 __add_event(struct list_head *list, int *idx, 251 struct perf_event_attr *attr, 252 bool init_attr, 253 const char *name, const char *metric_id, struct perf_pmu *pmu, 254 struct list_head *config_terms, struct evsel *first_wildcard_match, 255 struct perf_cpu_map *cpu_list, u64 alternate_hw_config) 256 { 257 struct evsel *evsel; 258 bool is_pmu_core; 259 struct perf_cpu_map *cpus; 260 261 /* 262 * Ensure the first_wildcard_match's PMU matches that of the new event 263 * being added. Otherwise try to match with another event further down 264 * the evlist. 265 */ 266 if (first_wildcard_match) { 267 struct evsel *pos = list_prev_entry(first_wildcard_match, core.node); 268 269 first_wildcard_match = NULL; 270 list_for_each_entry_continue(pos, list, core.node) { 271 if (perf_pmu__name_no_suffix_match(pos->pmu, pmu->name)) { 272 first_wildcard_match = pos; 273 break; 274 } 275 if (pos->pmu->is_core && (!pmu || pmu->is_core)) { 276 first_wildcard_match = pos; 277 break; 278 } 279 } 280 } 281 282 if (pmu) { 283 is_pmu_core = pmu->is_core; 284 cpus = perf_cpu_map__get(perf_cpu_map__is_empty(cpu_list) ? pmu->cpus : cpu_list); 285 perf_pmu__warn_invalid_formats(pmu); 286 if (attr->type == PERF_TYPE_RAW || attr->type >= PERF_TYPE_MAX) { 287 perf_pmu__warn_invalid_config(pmu, attr->config, name, 288 PERF_PMU_FORMAT_VALUE_CONFIG, "config"); 289 perf_pmu__warn_invalid_config(pmu, attr->config1, name, 290 PERF_PMU_FORMAT_VALUE_CONFIG1, "config1"); 291 perf_pmu__warn_invalid_config(pmu, attr->config2, name, 292 PERF_PMU_FORMAT_VALUE_CONFIG2, "config2"); 293 perf_pmu__warn_invalid_config(pmu, attr->config3, name, 294 PERF_PMU_FORMAT_VALUE_CONFIG3, "config3"); 295 } 296 } else { 297 is_pmu_core = (attr->type == PERF_TYPE_HARDWARE || 298 attr->type == PERF_TYPE_HW_CACHE); 299 if (perf_cpu_map__is_empty(cpu_list)) 300 cpus = is_pmu_core ? perf_cpu_map__new_online_cpus() : NULL; 301 else 302 cpus = perf_cpu_map__get(cpu_list); 303 } 304 if (init_attr) 305 event_attr_init(attr); 306 307 evsel = evsel__new_idx(attr, *idx); 308 if (!evsel) { 309 perf_cpu_map__put(cpus); 310 return NULL; 311 } 312 313 (*idx)++; 314 evsel->core.cpus = cpus; 315 evsel->core.own_cpus = perf_cpu_map__get(cpus); 316 evsel->core.requires_cpu = pmu ? pmu->is_uncore : false; 317 evsel->core.is_pmu_core = is_pmu_core; 318 evsel->pmu = pmu; 319 evsel->alternate_hw_config = alternate_hw_config; 320 evsel->first_wildcard_match = first_wildcard_match; 321 322 if (name) 323 evsel->name = strdup(name); 324 325 if (metric_id) 326 evsel->metric_id = strdup(metric_id); 327 328 if (config_terms) 329 list_splice_init(config_terms, &evsel->config_terms); 330 331 if (list) 332 list_add_tail(&evsel->core.node, list); 333 334 return evsel; 335 } 336 337 struct evsel *parse_events__add_event(int idx, struct perf_event_attr *attr, 338 const char *name, const char *metric_id, 339 struct perf_pmu *pmu) 340 { 341 return __add_event(/*list=*/NULL, &idx, attr, /*init_attr=*/false, name, 342 metric_id, pmu, /*config_terms=*/NULL, 343 /*first_wildcard_match=*/NULL, /*cpu_list=*/NULL, 344 /*alternate_hw_config=*/PERF_COUNT_HW_MAX); 345 } 346 347 static int add_event(struct list_head *list, int *idx, 348 struct perf_event_attr *attr, const char *name, 349 const char *metric_id, struct list_head *config_terms, 350 u64 alternate_hw_config) 351 { 352 return __add_event(list, idx, attr, /*init_attr*/true, name, metric_id, 353 /*pmu=*/NULL, config_terms, 354 /*first_wildcard_match=*/NULL, /*cpu_list=*/NULL, 355 alternate_hw_config) ? 0 : -ENOMEM; 356 } 357 358 /** 359 * parse_aliases - search names for entries beginning or equalling str ignoring 360 * case. If mutliple entries in names match str then the longest 361 * is chosen. 362 * @str: The needle to look for. 363 * @names: The haystack to search. 364 * @size: The size of the haystack. 365 * @longest: Out argument giving the length of the matching entry. 366 */ 367 static int parse_aliases(const char *str, const char *const names[][EVSEL__MAX_ALIASES], int size, 368 int *longest) 369 { 370 *longest = -1; 371 for (int i = 0; i < size; i++) { 372 for (int j = 0; j < EVSEL__MAX_ALIASES && names[i][j]; j++) { 373 int n = strlen(names[i][j]); 374 375 if (n > *longest && !strncasecmp(str, names[i][j], n)) 376 *longest = n; 377 } 378 if (*longest > 0) 379 return i; 380 } 381 382 return -1; 383 } 384 385 typedef int config_term_func_t(struct perf_event_attr *attr, 386 struct parse_events_term *term, 387 struct parse_events_error *err); 388 static int config_term_common(struct perf_event_attr *attr, 389 struct parse_events_term *term, 390 struct parse_events_error *err); 391 static int config_attr(struct perf_event_attr *attr, 392 const struct parse_events_terms *head, 393 struct parse_events_error *err, 394 config_term_func_t config_term); 395 396 /** 397 * parse_events__decode_legacy_cache - Search name for the legacy cache event 398 * name composed of 1, 2 or 3 hyphen 399 * separated sections. The first section is 400 * the cache type while the others are the 401 * optional op and optional result. To make 402 * life hard the names in the table also 403 * contain hyphens and the longest name 404 * should always be selected. 405 */ 406 int parse_events__decode_legacy_cache(const char *name, int extended_pmu_type, __u64 *config) 407 { 408 int len, cache_type = -1, cache_op = -1, cache_result = -1; 409 const char *name_end = &name[strlen(name) + 1]; 410 const char *str = name; 411 412 cache_type = parse_aliases(str, evsel__hw_cache, PERF_COUNT_HW_CACHE_MAX, &len); 413 if (cache_type == -1) 414 return -EINVAL; 415 str += len + 1; 416 417 if (str < name_end) { 418 cache_op = parse_aliases(str, evsel__hw_cache_op, 419 PERF_COUNT_HW_CACHE_OP_MAX, &len); 420 if (cache_op >= 0) { 421 if (!evsel__is_cache_op_valid(cache_type, cache_op)) 422 return -EINVAL; 423 str += len + 1; 424 } else { 425 cache_result = parse_aliases(str, evsel__hw_cache_result, 426 PERF_COUNT_HW_CACHE_RESULT_MAX, &len); 427 if (cache_result >= 0) 428 str += len + 1; 429 } 430 } 431 if (str < name_end) { 432 if (cache_op < 0) { 433 cache_op = parse_aliases(str, evsel__hw_cache_op, 434 PERF_COUNT_HW_CACHE_OP_MAX, &len); 435 if (cache_op >= 0) { 436 if (!evsel__is_cache_op_valid(cache_type, cache_op)) 437 return -EINVAL; 438 } 439 } else if (cache_result < 0) { 440 cache_result = parse_aliases(str, evsel__hw_cache_result, 441 PERF_COUNT_HW_CACHE_RESULT_MAX, &len); 442 } 443 } 444 445 /* 446 * Fall back to reads: 447 */ 448 if (cache_op == -1) 449 cache_op = PERF_COUNT_HW_CACHE_OP_READ; 450 451 /* 452 * Fall back to accesses: 453 */ 454 if (cache_result == -1) 455 cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS; 456 457 *config = cache_type | (cache_op << 8) | (cache_result << 16); 458 if (perf_pmus__supports_extended_type()) 459 *config |= (__u64)extended_pmu_type << PERF_PMU_TYPE_SHIFT; 460 return 0; 461 } 462 463 /** 464 * parse_events__filter_pmu - returns false if a wildcard PMU should be 465 * considered, true if it should be filtered. 466 */ 467 bool parse_events__filter_pmu(const struct parse_events_state *parse_state, 468 const struct perf_pmu *pmu) 469 { 470 if (parse_state->pmu_filter == NULL) 471 return false; 472 473 return strcmp(parse_state->pmu_filter, pmu->name) != 0; 474 } 475 476 static int parse_events_add_pmu(struct parse_events_state *parse_state, 477 struct list_head *list, struct perf_pmu *pmu, 478 const struct parse_events_terms *const_parsed_terms, 479 struct evsel *first_wildcard_match, u64 alternate_hw_config); 480 481 int parse_events_add_cache(struct list_head *list, int *idx, const char *name, 482 struct parse_events_state *parse_state, 483 struct parse_events_terms *parsed_terms) 484 { 485 struct perf_pmu *pmu = NULL; 486 bool found_supported = false; 487 const char *config_name = get_config_name(parsed_terms); 488 const char *metric_id = get_config_metric_id(parsed_terms); 489 struct perf_cpu_map *cpus = get_config_cpu(parsed_terms); 490 int ret = 0; 491 struct evsel *first_wildcard_match = NULL; 492 493 while ((pmu = perf_pmus__scan(pmu)) != NULL) { 494 LIST_HEAD(config_terms); 495 struct perf_event_attr attr; 496 497 if (parse_events__filter_pmu(parse_state, pmu)) 498 continue; 499 500 if (perf_pmu__have_event(pmu, name)) { 501 /* 502 * The PMU has the event so add as not a legacy cache 503 * event. 504 */ 505 ret = parse_events_add_pmu(parse_state, list, pmu, 506 parsed_terms, 507 first_wildcard_match, 508 /*alternate_hw_config=*/PERF_COUNT_HW_MAX); 509 if (ret) 510 goto out_err; 511 if (first_wildcard_match == NULL) 512 first_wildcard_match = 513 container_of(list->prev, struct evsel, core.node); 514 continue; 515 } 516 517 if (!pmu->is_core) { 518 /* Legacy cache events are only supported by core PMUs. */ 519 continue; 520 } 521 522 memset(&attr, 0, sizeof(attr)); 523 attr.type = PERF_TYPE_HW_CACHE; 524 525 ret = parse_events__decode_legacy_cache(name, pmu->type, &attr.config); 526 if (ret) 527 return ret; 528 529 found_supported = true; 530 531 if (parsed_terms) { 532 if (config_attr(&attr, parsed_terms, parse_state->error, 533 config_term_common)) { 534 ret = -EINVAL; 535 goto out_err; 536 } 537 if (get_config_terms(parsed_terms, &config_terms)) { 538 ret = -ENOMEM; 539 goto out_err; 540 } 541 } 542 543 if (__add_event(list, idx, &attr, /*init_attr*/true, config_name ?: name, 544 metric_id, pmu, &config_terms, first_wildcard_match, 545 cpus, /*alternate_hw_config=*/PERF_COUNT_HW_MAX) == NULL) 546 ret = -ENOMEM; 547 548 if (first_wildcard_match == NULL) 549 first_wildcard_match = container_of(list->prev, struct evsel, core.node); 550 free_config_terms(&config_terms); 551 if (ret) 552 goto out_err; 553 } 554 out_err: 555 perf_cpu_map__put(cpus); 556 return found_supported ? 0 : -EINVAL; 557 } 558 559 static void tracepoint_error(struct parse_events_error *e, int err, 560 const char *sys, const char *name, int column) 561 { 562 const char *str; 563 char help[BUFSIZ]; 564 565 if (!e) 566 return; 567 568 /* 569 * We get error directly from syscall errno ( > 0), 570 * or from encoded pointer's error ( < 0). 571 */ 572 err = abs(err); 573 574 switch (err) { 575 case EACCES: 576 str = "can't access trace events"; 577 break; 578 case ENOENT: 579 str = "unknown tracepoint"; 580 break; 581 default: 582 str = "failed to add tracepoint"; 583 break; 584 } 585 586 tracing_path__strerror_open_tp(err, help, sizeof(help), sys, name); 587 parse_events_error__handle(e, column, strdup(str), strdup(help)); 588 } 589 590 static int add_tracepoint(struct parse_events_state *parse_state, 591 struct list_head *list, 592 const char *sys_name, const char *evt_name, 593 struct parse_events_error *err, 594 struct parse_events_terms *head_config, void *loc_) 595 { 596 YYLTYPE *loc = loc_; 597 struct evsel *evsel = evsel__newtp_idx(sys_name, evt_name, parse_state->idx++, 598 !parse_state->fake_tp); 599 600 if (IS_ERR(evsel)) { 601 tracepoint_error(err, PTR_ERR(evsel), sys_name, evt_name, loc->first_column); 602 return PTR_ERR(evsel); 603 } 604 605 if (head_config) { 606 LIST_HEAD(config_terms); 607 608 if (get_config_terms(head_config, &config_terms)) 609 return -ENOMEM; 610 list_splice(&config_terms, &evsel->config_terms); 611 } 612 613 list_add_tail(&evsel->core.node, list); 614 return 0; 615 } 616 617 static int add_tracepoint_multi_event(struct parse_events_state *parse_state, 618 struct list_head *list, 619 const char *sys_name, const char *evt_name, 620 struct parse_events_error *err, 621 struct parse_events_terms *head_config, YYLTYPE *loc) 622 { 623 char *evt_path; 624 struct io_dirent64 *evt_ent; 625 struct io_dir evt_dir; 626 int ret = 0, found = 0; 627 628 evt_path = get_events_file(sys_name); 629 if (!evt_path) { 630 tracepoint_error(err, errno, sys_name, evt_name, loc->first_column); 631 return -1; 632 } 633 io_dir__init(&evt_dir, open(evt_path, O_CLOEXEC | O_DIRECTORY | O_RDONLY)); 634 if (evt_dir.dirfd < 0) { 635 put_events_file(evt_path); 636 tracepoint_error(err, errno, sys_name, evt_name, loc->first_column); 637 return -1; 638 } 639 640 while (!ret && (evt_ent = io_dir__readdir(&evt_dir))) { 641 if (!strcmp(evt_ent->d_name, ".") 642 || !strcmp(evt_ent->d_name, "..") 643 || !strcmp(evt_ent->d_name, "enable") 644 || !strcmp(evt_ent->d_name, "filter")) 645 continue; 646 647 if (!strglobmatch(evt_ent->d_name, evt_name)) 648 continue; 649 650 found++; 651 652 ret = add_tracepoint(parse_state, list, sys_name, evt_ent->d_name, 653 err, head_config, loc); 654 } 655 656 if (!found) { 657 tracepoint_error(err, ENOENT, sys_name, evt_name, loc->first_column); 658 ret = -1; 659 } 660 661 put_events_file(evt_path); 662 close(evt_dir.dirfd); 663 return ret; 664 } 665 666 static int add_tracepoint_event(struct parse_events_state *parse_state, 667 struct list_head *list, 668 const char *sys_name, const char *evt_name, 669 struct parse_events_error *err, 670 struct parse_events_terms *head_config, YYLTYPE *loc) 671 { 672 return strpbrk(evt_name, "*?") ? 673 add_tracepoint_multi_event(parse_state, list, sys_name, evt_name, 674 err, head_config, loc) : 675 add_tracepoint(parse_state, list, sys_name, evt_name, 676 err, head_config, loc); 677 } 678 679 static int add_tracepoint_multi_sys(struct parse_events_state *parse_state, 680 struct list_head *list, 681 const char *sys_name, const char *evt_name, 682 struct parse_events_error *err, 683 struct parse_events_terms *head_config, YYLTYPE *loc) 684 { 685 struct io_dirent64 *events_ent; 686 struct io_dir events_dir; 687 int ret = 0; 688 char *events_dir_path = get_tracing_file("events"); 689 690 if (!events_dir_path) { 691 tracepoint_error(err, errno, sys_name, evt_name, loc->first_column); 692 return -1; 693 } 694 io_dir__init(&events_dir, open(events_dir_path, O_CLOEXEC | O_DIRECTORY | O_RDONLY)); 695 put_events_file(events_dir_path); 696 if (events_dir.dirfd < 0) { 697 tracepoint_error(err, errno, sys_name, evt_name, loc->first_column); 698 return -1; 699 } 700 701 while (!ret && (events_ent = io_dir__readdir(&events_dir))) { 702 if (!strcmp(events_ent->d_name, ".") 703 || !strcmp(events_ent->d_name, "..") 704 || !strcmp(events_ent->d_name, "enable") 705 || !strcmp(events_ent->d_name, "header_event") 706 || !strcmp(events_ent->d_name, "header_page")) 707 continue; 708 709 if (!strglobmatch(events_ent->d_name, sys_name)) 710 continue; 711 712 ret = add_tracepoint_event(parse_state, list, events_ent->d_name, 713 evt_name, err, head_config, loc); 714 } 715 close(events_dir.dirfd); 716 return ret; 717 } 718 719 size_t default_breakpoint_len(void) 720 { 721 #if defined(__i386__) 722 static int len; 723 724 if (len == 0) { 725 struct perf_env env = {}; 726 727 perf_env__init(&env); 728 len = perf_env__kernel_is_64_bit(&env) ? sizeof(u64) : sizeof(long); 729 perf_env__exit(&env); 730 } 731 return len; 732 #elif defined(__aarch64__) 733 return 4; 734 #else 735 return sizeof(long); 736 #endif 737 } 738 739 static int 740 parse_breakpoint_type(const char *type, struct perf_event_attr *attr) 741 { 742 int i; 743 744 for (i = 0; i < 3; i++) { 745 if (!type || !type[i]) 746 break; 747 748 #define CHECK_SET_TYPE(bit) \ 749 do { \ 750 if (attr->bp_type & bit) \ 751 return -EINVAL; \ 752 else \ 753 attr->bp_type |= bit; \ 754 } while (0) 755 756 switch (type[i]) { 757 case 'r': 758 CHECK_SET_TYPE(HW_BREAKPOINT_R); 759 break; 760 case 'w': 761 CHECK_SET_TYPE(HW_BREAKPOINT_W); 762 break; 763 case 'x': 764 CHECK_SET_TYPE(HW_BREAKPOINT_X); 765 break; 766 default: 767 return -EINVAL; 768 } 769 } 770 771 #undef CHECK_SET_TYPE 772 773 if (!attr->bp_type) /* Default */ 774 attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W; 775 776 return 0; 777 } 778 779 int parse_events_add_breakpoint(struct parse_events_state *parse_state, 780 struct list_head *list, 781 u64 addr, char *type, u64 len, 782 struct parse_events_terms *head_config) 783 { 784 struct perf_event_attr attr; 785 LIST_HEAD(config_terms); 786 const char *name; 787 788 memset(&attr, 0, sizeof(attr)); 789 attr.bp_addr = addr; 790 791 if (parse_breakpoint_type(type, &attr)) 792 return -EINVAL; 793 794 /* Provide some defaults if len is not specified */ 795 if (!len) { 796 if (attr.bp_type == HW_BREAKPOINT_X) 797 len = default_breakpoint_len(); 798 else 799 len = HW_BREAKPOINT_LEN_4; 800 } 801 802 attr.bp_len = len; 803 804 attr.type = PERF_TYPE_BREAKPOINT; 805 attr.sample_period = 1; 806 807 if (head_config) { 808 if (config_attr(&attr, head_config, parse_state->error, 809 config_term_common)) 810 return -EINVAL; 811 812 if (get_config_terms(head_config, &config_terms)) 813 return -ENOMEM; 814 } 815 816 name = get_config_name(head_config); 817 818 return add_event(list, &parse_state->idx, &attr, name, /*mertic_id=*/NULL, 819 &config_terms, /*alternate_hw_config=*/PERF_COUNT_HW_MAX); 820 } 821 822 static int check_type_val(struct parse_events_term *term, 823 struct parse_events_error *err, 824 enum parse_events__term_val_type type) 825 { 826 if (type == term->type_val) 827 return 0; 828 829 if (err) { 830 parse_events_error__handle(err, term->err_val, 831 type == PARSE_EVENTS__TERM_TYPE_NUM 832 ? strdup("expected numeric value") 833 : strdup("expected string value"), 834 NULL); 835 } 836 return -EINVAL; 837 } 838 839 static bool config_term_shrinked; 840 841 const char *parse_events__term_type_str(enum parse_events__term_type term_type) 842 { 843 /* 844 * Update according to parse-events.l 845 */ 846 static const char *config_term_names[__PARSE_EVENTS__TERM_TYPE_NR] = { 847 [PARSE_EVENTS__TERM_TYPE_USER] = "<sysfs term>", 848 [PARSE_EVENTS__TERM_TYPE_CONFIG] = "config", 849 [PARSE_EVENTS__TERM_TYPE_CONFIG1] = "config1", 850 [PARSE_EVENTS__TERM_TYPE_CONFIG2] = "config2", 851 [PARSE_EVENTS__TERM_TYPE_CONFIG3] = "config3", 852 [PARSE_EVENTS__TERM_TYPE_NAME] = "name", 853 [PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD] = "period", 854 [PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ] = "freq", 855 [PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE] = "branch_type", 856 [PARSE_EVENTS__TERM_TYPE_TIME] = "time", 857 [PARSE_EVENTS__TERM_TYPE_CALLGRAPH] = "call-graph", 858 [PARSE_EVENTS__TERM_TYPE_STACKSIZE] = "stack-size", 859 [PARSE_EVENTS__TERM_TYPE_NOINHERIT] = "no-inherit", 860 [PARSE_EVENTS__TERM_TYPE_INHERIT] = "inherit", 861 [PARSE_EVENTS__TERM_TYPE_MAX_STACK] = "max-stack", 862 [PARSE_EVENTS__TERM_TYPE_MAX_EVENTS] = "nr", 863 [PARSE_EVENTS__TERM_TYPE_OVERWRITE] = "overwrite", 864 [PARSE_EVENTS__TERM_TYPE_NOOVERWRITE] = "no-overwrite", 865 [PARSE_EVENTS__TERM_TYPE_DRV_CFG] = "driver-config", 866 [PARSE_EVENTS__TERM_TYPE_PERCORE] = "percore", 867 [PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT] = "aux-output", 868 [PARSE_EVENTS__TERM_TYPE_AUX_ACTION] = "aux-action", 869 [PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE] = "aux-sample-size", 870 [PARSE_EVENTS__TERM_TYPE_METRIC_ID] = "metric-id", 871 [PARSE_EVENTS__TERM_TYPE_RAW] = "raw", 872 [PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE] = "legacy-cache", 873 [PARSE_EVENTS__TERM_TYPE_HARDWARE] = "hardware", 874 [PARSE_EVENTS__TERM_TYPE_CPU] = "cpu", 875 }; 876 if ((unsigned int)term_type >= __PARSE_EVENTS__TERM_TYPE_NR) 877 return "unknown term"; 878 879 return config_term_names[term_type]; 880 } 881 882 static bool 883 config_term_avail(enum parse_events__term_type term_type, struct parse_events_error *err) 884 { 885 char *err_str; 886 887 if (term_type < 0 || term_type >= __PARSE_EVENTS__TERM_TYPE_NR) { 888 parse_events_error__handle(err, -1, 889 strdup("Invalid term_type"), NULL); 890 return false; 891 } 892 if (!config_term_shrinked) 893 return true; 894 895 switch (term_type) { 896 case PARSE_EVENTS__TERM_TYPE_CONFIG: 897 case PARSE_EVENTS__TERM_TYPE_CONFIG1: 898 case PARSE_EVENTS__TERM_TYPE_CONFIG2: 899 case PARSE_EVENTS__TERM_TYPE_CONFIG3: 900 case PARSE_EVENTS__TERM_TYPE_NAME: 901 case PARSE_EVENTS__TERM_TYPE_METRIC_ID: 902 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD: 903 case PARSE_EVENTS__TERM_TYPE_PERCORE: 904 case PARSE_EVENTS__TERM_TYPE_CPU: 905 return true; 906 case PARSE_EVENTS__TERM_TYPE_USER: 907 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ: 908 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE: 909 case PARSE_EVENTS__TERM_TYPE_TIME: 910 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH: 911 case PARSE_EVENTS__TERM_TYPE_STACKSIZE: 912 case PARSE_EVENTS__TERM_TYPE_NOINHERIT: 913 case PARSE_EVENTS__TERM_TYPE_INHERIT: 914 case PARSE_EVENTS__TERM_TYPE_MAX_STACK: 915 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS: 916 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE: 917 case PARSE_EVENTS__TERM_TYPE_OVERWRITE: 918 case PARSE_EVENTS__TERM_TYPE_DRV_CFG: 919 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT: 920 case PARSE_EVENTS__TERM_TYPE_AUX_ACTION: 921 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE: 922 case PARSE_EVENTS__TERM_TYPE_RAW: 923 case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE: 924 case PARSE_EVENTS__TERM_TYPE_HARDWARE: 925 default: 926 if (!err) 927 return false; 928 929 /* term_type is validated so indexing is safe */ 930 if (asprintf(&err_str, "'%s' is not usable in 'perf stat'", 931 parse_events__term_type_str(term_type)) >= 0) 932 parse_events_error__handle(err, -1, err_str, NULL); 933 return false; 934 } 935 } 936 937 void parse_events__shrink_config_terms(void) 938 { 939 config_term_shrinked = true; 940 } 941 942 static int config_term_common(struct perf_event_attr *attr, 943 struct parse_events_term *term, 944 struct parse_events_error *err) 945 { 946 #define CHECK_TYPE_VAL(type) \ 947 do { \ 948 if (check_type_val(term, err, PARSE_EVENTS__TERM_TYPE_ ## type)) \ 949 return -EINVAL; \ 950 } while (0) 951 952 switch (term->type_term) { 953 case PARSE_EVENTS__TERM_TYPE_CONFIG: 954 CHECK_TYPE_VAL(NUM); 955 attr->config = term->val.num; 956 break; 957 case PARSE_EVENTS__TERM_TYPE_CONFIG1: 958 CHECK_TYPE_VAL(NUM); 959 attr->config1 = term->val.num; 960 break; 961 case PARSE_EVENTS__TERM_TYPE_CONFIG2: 962 CHECK_TYPE_VAL(NUM); 963 attr->config2 = term->val.num; 964 break; 965 case PARSE_EVENTS__TERM_TYPE_CONFIG3: 966 CHECK_TYPE_VAL(NUM); 967 attr->config3 = term->val.num; 968 break; 969 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD: 970 CHECK_TYPE_VAL(NUM); 971 break; 972 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ: 973 CHECK_TYPE_VAL(NUM); 974 break; 975 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE: 976 CHECK_TYPE_VAL(STR); 977 if (strcmp(term->val.str, "no") && 978 parse_branch_str(term->val.str, 979 &attr->branch_sample_type)) { 980 parse_events_error__handle(err, term->err_val, 981 strdup("invalid branch sample type"), 982 NULL); 983 return -EINVAL; 984 } 985 break; 986 case PARSE_EVENTS__TERM_TYPE_TIME: 987 CHECK_TYPE_VAL(NUM); 988 if (term->val.num > 1) { 989 parse_events_error__handle(err, term->err_val, 990 strdup("expected 0 or 1"), 991 NULL); 992 return -EINVAL; 993 } 994 break; 995 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH: 996 CHECK_TYPE_VAL(STR); 997 break; 998 case PARSE_EVENTS__TERM_TYPE_STACKSIZE: 999 CHECK_TYPE_VAL(NUM); 1000 break; 1001 case PARSE_EVENTS__TERM_TYPE_INHERIT: 1002 CHECK_TYPE_VAL(NUM); 1003 break; 1004 case PARSE_EVENTS__TERM_TYPE_NOINHERIT: 1005 CHECK_TYPE_VAL(NUM); 1006 break; 1007 case PARSE_EVENTS__TERM_TYPE_OVERWRITE: 1008 CHECK_TYPE_VAL(NUM); 1009 break; 1010 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE: 1011 CHECK_TYPE_VAL(NUM); 1012 break; 1013 case PARSE_EVENTS__TERM_TYPE_NAME: 1014 CHECK_TYPE_VAL(STR); 1015 break; 1016 case PARSE_EVENTS__TERM_TYPE_METRIC_ID: 1017 CHECK_TYPE_VAL(STR); 1018 break; 1019 case PARSE_EVENTS__TERM_TYPE_RAW: 1020 CHECK_TYPE_VAL(STR); 1021 break; 1022 case PARSE_EVENTS__TERM_TYPE_MAX_STACK: 1023 CHECK_TYPE_VAL(NUM); 1024 break; 1025 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS: 1026 CHECK_TYPE_VAL(NUM); 1027 break; 1028 case PARSE_EVENTS__TERM_TYPE_PERCORE: 1029 CHECK_TYPE_VAL(NUM); 1030 if ((unsigned int)term->val.num > 1) { 1031 parse_events_error__handle(err, term->err_val, 1032 strdup("expected 0 or 1"), 1033 NULL); 1034 return -EINVAL; 1035 } 1036 break; 1037 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT: 1038 CHECK_TYPE_VAL(NUM); 1039 break; 1040 case PARSE_EVENTS__TERM_TYPE_AUX_ACTION: 1041 CHECK_TYPE_VAL(STR); 1042 break; 1043 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE: 1044 CHECK_TYPE_VAL(NUM); 1045 if (term->val.num > UINT_MAX) { 1046 parse_events_error__handle(err, term->err_val, 1047 strdup("too big"), 1048 NULL); 1049 return -EINVAL; 1050 } 1051 break; 1052 case PARSE_EVENTS__TERM_TYPE_CPU: 1053 CHECK_TYPE_VAL(NUM); 1054 if (term->val.num >= (u64)cpu__max_present_cpu().cpu) { 1055 parse_events_error__handle(err, term->err_val, 1056 strdup("too big"), 1057 NULL); 1058 return -EINVAL; 1059 } 1060 break; 1061 case PARSE_EVENTS__TERM_TYPE_DRV_CFG: 1062 case PARSE_EVENTS__TERM_TYPE_USER: 1063 case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE: 1064 case PARSE_EVENTS__TERM_TYPE_HARDWARE: 1065 default: 1066 parse_events_error__handle(err, term->err_term, 1067 strdup(parse_events__term_type_str(term->type_term)), 1068 parse_events_formats_error_string(NULL)); 1069 return -EINVAL; 1070 } 1071 1072 /* 1073 * Check term availability after basic checking so 1074 * PARSE_EVENTS__TERM_TYPE_USER can be found and filtered. 1075 * 1076 * If check availability at the entry of this function, 1077 * user will see "'<sysfs term>' is not usable in 'perf stat'" 1078 * if an invalid config term is provided for legacy events 1079 * (for example, instructions/badterm/...), which is confusing. 1080 */ 1081 if (!config_term_avail(term->type_term, err)) 1082 return -EINVAL; 1083 return 0; 1084 #undef CHECK_TYPE_VAL 1085 } 1086 1087 static int config_term_pmu(struct perf_event_attr *attr, 1088 struct parse_events_term *term, 1089 struct parse_events_error *err) 1090 { 1091 if (term->type_term == PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE) { 1092 struct perf_pmu *pmu = perf_pmus__find_by_type(attr->type); 1093 1094 if (!pmu) { 1095 char *err_str; 1096 1097 if (asprintf(&err_str, "Failed to find PMU for type %d", attr->type) >= 0) 1098 parse_events_error__handle(err, term->err_term, 1099 err_str, /*help=*/NULL); 1100 return -EINVAL; 1101 } 1102 /* 1103 * Rewrite the PMU event to a legacy cache one unless the PMU 1104 * doesn't support legacy cache events or the event is present 1105 * within the PMU. 1106 */ 1107 if (perf_pmu__supports_legacy_cache(pmu) && 1108 !perf_pmu__have_event(pmu, term->config)) { 1109 attr->type = PERF_TYPE_HW_CACHE; 1110 return parse_events__decode_legacy_cache(term->config, pmu->type, 1111 &attr->config); 1112 } else { 1113 term->type_term = PARSE_EVENTS__TERM_TYPE_USER; 1114 term->no_value = true; 1115 } 1116 } 1117 if (term->type_term == PARSE_EVENTS__TERM_TYPE_HARDWARE) { 1118 struct perf_pmu *pmu = perf_pmus__find_by_type(attr->type); 1119 1120 if (!pmu) { 1121 char *err_str; 1122 1123 if (asprintf(&err_str, "Failed to find PMU for type %d", attr->type) >= 0) 1124 parse_events_error__handle(err, term->err_term, 1125 err_str, /*help=*/NULL); 1126 return -EINVAL; 1127 } 1128 /* 1129 * If the PMU has a sysfs or json event prefer it over 1130 * legacy. ARM requires this. 1131 */ 1132 if (perf_pmu__have_event(pmu, term->config)) { 1133 term->type_term = PARSE_EVENTS__TERM_TYPE_USER; 1134 term->no_value = true; 1135 term->alternate_hw_config = true; 1136 } else { 1137 attr->type = PERF_TYPE_HARDWARE; 1138 attr->config = term->val.num; 1139 if (perf_pmus__supports_extended_type()) 1140 attr->config |= (__u64)pmu->type << PERF_PMU_TYPE_SHIFT; 1141 } 1142 return 0; 1143 } 1144 if (term->type_term == PARSE_EVENTS__TERM_TYPE_USER || 1145 term->type_term == PARSE_EVENTS__TERM_TYPE_DRV_CFG) { 1146 /* 1147 * Always succeed for sysfs terms, as we dont know 1148 * at this point what type they need to have. 1149 */ 1150 return 0; 1151 } 1152 return config_term_common(attr, term, err); 1153 } 1154 1155 static int config_term_tracepoint(struct perf_event_attr *attr, 1156 struct parse_events_term *term, 1157 struct parse_events_error *err) 1158 { 1159 switch (term->type_term) { 1160 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH: 1161 case PARSE_EVENTS__TERM_TYPE_STACKSIZE: 1162 case PARSE_EVENTS__TERM_TYPE_INHERIT: 1163 case PARSE_EVENTS__TERM_TYPE_NOINHERIT: 1164 case PARSE_EVENTS__TERM_TYPE_MAX_STACK: 1165 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS: 1166 case PARSE_EVENTS__TERM_TYPE_OVERWRITE: 1167 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE: 1168 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT: 1169 case PARSE_EVENTS__TERM_TYPE_AUX_ACTION: 1170 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE: 1171 return config_term_common(attr, term, err); 1172 case PARSE_EVENTS__TERM_TYPE_USER: 1173 case PARSE_EVENTS__TERM_TYPE_CONFIG: 1174 case PARSE_EVENTS__TERM_TYPE_CONFIG1: 1175 case PARSE_EVENTS__TERM_TYPE_CONFIG2: 1176 case PARSE_EVENTS__TERM_TYPE_CONFIG3: 1177 case PARSE_EVENTS__TERM_TYPE_NAME: 1178 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD: 1179 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ: 1180 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE: 1181 case PARSE_EVENTS__TERM_TYPE_TIME: 1182 case PARSE_EVENTS__TERM_TYPE_DRV_CFG: 1183 case PARSE_EVENTS__TERM_TYPE_PERCORE: 1184 case PARSE_EVENTS__TERM_TYPE_METRIC_ID: 1185 case PARSE_EVENTS__TERM_TYPE_RAW: 1186 case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE: 1187 case PARSE_EVENTS__TERM_TYPE_HARDWARE: 1188 case PARSE_EVENTS__TERM_TYPE_CPU: 1189 default: 1190 if (err) { 1191 parse_events_error__handle(err, term->err_term, 1192 strdup(parse_events__term_type_str(term->type_term)), 1193 strdup("valid terms: call-graph,stack-size\n") 1194 ); 1195 } 1196 return -EINVAL; 1197 } 1198 1199 return 0; 1200 } 1201 1202 static int config_attr(struct perf_event_attr *attr, 1203 const struct parse_events_terms *head, 1204 struct parse_events_error *err, 1205 config_term_func_t config_term) 1206 { 1207 struct parse_events_term *term; 1208 1209 list_for_each_entry(term, &head->terms, list) 1210 if (config_term(attr, term, err)) 1211 return -EINVAL; 1212 1213 return 0; 1214 } 1215 1216 static int get_config_terms(const struct parse_events_terms *head_config, 1217 struct list_head *head_terms) 1218 { 1219 #define ADD_CONFIG_TERM(__type, __weak) \ 1220 struct evsel_config_term *__t; \ 1221 \ 1222 __t = zalloc(sizeof(*__t)); \ 1223 if (!__t) \ 1224 return -ENOMEM; \ 1225 \ 1226 INIT_LIST_HEAD(&__t->list); \ 1227 __t->type = EVSEL__CONFIG_TERM_ ## __type; \ 1228 __t->weak = __weak; \ 1229 list_add_tail(&__t->list, head_terms) 1230 1231 #define ADD_CONFIG_TERM_VAL(__type, __name, __val, __weak) \ 1232 do { \ 1233 ADD_CONFIG_TERM(__type, __weak); \ 1234 __t->val.__name = __val; \ 1235 } while (0) 1236 1237 #define ADD_CONFIG_TERM_STR(__type, __val, __weak) \ 1238 do { \ 1239 ADD_CONFIG_TERM(__type, __weak); \ 1240 __t->val.str = strdup(__val); \ 1241 if (!__t->val.str) { \ 1242 zfree(&__t); \ 1243 return -ENOMEM; \ 1244 } \ 1245 __t->free_str = true; \ 1246 } while (0) 1247 1248 struct parse_events_term *term; 1249 1250 list_for_each_entry(term, &head_config->terms, list) { 1251 switch (term->type_term) { 1252 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD: 1253 ADD_CONFIG_TERM_VAL(PERIOD, period, term->val.num, term->weak); 1254 break; 1255 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ: 1256 ADD_CONFIG_TERM_VAL(FREQ, freq, term->val.num, term->weak); 1257 break; 1258 case PARSE_EVENTS__TERM_TYPE_TIME: 1259 ADD_CONFIG_TERM_VAL(TIME, time, term->val.num, term->weak); 1260 break; 1261 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH: 1262 ADD_CONFIG_TERM_STR(CALLGRAPH, term->val.str, term->weak); 1263 break; 1264 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE: 1265 ADD_CONFIG_TERM_STR(BRANCH, term->val.str, term->weak); 1266 break; 1267 case PARSE_EVENTS__TERM_TYPE_STACKSIZE: 1268 ADD_CONFIG_TERM_VAL(STACK_USER, stack_user, 1269 term->val.num, term->weak); 1270 break; 1271 case PARSE_EVENTS__TERM_TYPE_INHERIT: 1272 ADD_CONFIG_TERM_VAL(INHERIT, inherit, 1273 term->val.num ? 1 : 0, term->weak); 1274 break; 1275 case PARSE_EVENTS__TERM_TYPE_NOINHERIT: 1276 ADD_CONFIG_TERM_VAL(INHERIT, inherit, 1277 term->val.num ? 0 : 1, term->weak); 1278 break; 1279 case PARSE_EVENTS__TERM_TYPE_MAX_STACK: 1280 ADD_CONFIG_TERM_VAL(MAX_STACK, max_stack, 1281 term->val.num, term->weak); 1282 break; 1283 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS: 1284 ADD_CONFIG_TERM_VAL(MAX_EVENTS, max_events, 1285 term->val.num, term->weak); 1286 break; 1287 case PARSE_EVENTS__TERM_TYPE_OVERWRITE: 1288 ADD_CONFIG_TERM_VAL(OVERWRITE, overwrite, 1289 term->val.num ? 1 : 0, term->weak); 1290 break; 1291 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE: 1292 ADD_CONFIG_TERM_VAL(OVERWRITE, overwrite, 1293 term->val.num ? 0 : 1, term->weak); 1294 break; 1295 case PARSE_EVENTS__TERM_TYPE_DRV_CFG: 1296 ADD_CONFIG_TERM_STR(DRV_CFG, term->val.str, term->weak); 1297 break; 1298 case PARSE_EVENTS__TERM_TYPE_PERCORE: 1299 ADD_CONFIG_TERM_VAL(PERCORE, percore, 1300 term->val.num ? true : false, term->weak); 1301 break; 1302 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT: 1303 ADD_CONFIG_TERM_VAL(AUX_OUTPUT, aux_output, 1304 term->val.num ? 1 : 0, term->weak); 1305 break; 1306 case PARSE_EVENTS__TERM_TYPE_AUX_ACTION: 1307 ADD_CONFIG_TERM_STR(AUX_ACTION, term->val.str, term->weak); 1308 break; 1309 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE: 1310 ADD_CONFIG_TERM_VAL(AUX_SAMPLE_SIZE, aux_sample_size, 1311 term->val.num, term->weak); 1312 break; 1313 case PARSE_EVENTS__TERM_TYPE_USER: 1314 case PARSE_EVENTS__TERM_TYPE_CONFIG: 1315 case PARSE_EVENTS__TERM_TYPE_CONFIG1: 1316 case PARSE_EVENTS__TERM_TYPE_CONFIG2: 1317 case PARSE_EVENTS__TERM_TYPE_CONFIG3: 1318 case PARSE_EVENTS__TERM_TYPE_NAME: 1319 case PARSE_EVENTS__TERM_TYPE_METRIC_ID: 1320 case PARSE_EVENTS__TERM_TYPE_RAW: 1321 case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE: 1322 case PARSE_EVENTS__TERM_TYPE_HARDWARE: 1323 case PARSE_EVENTS__TERM_TYPE_CPU: 1324 default: 1325 break; 1326 } 1327 } 1328 return 0; 1329 } 1330 1331 /* 1332 * Add EVSEL__CONFIG_TERM_CFG_CHG where cfg_chg will have a bit set for 1333 * each bit of attr->config that the user has changed. 1334 */ 1335 static int get_config_chgs(struct perf_pmu *pmu, struct parse_events_terms *head_config, 1336 struct list_head *head_terms) 1337 { 1338 struct parse_events_term *term; 1339 u64 bits = 0; 1340 int type; 1341 1342 list_for_each_entry(term, &head_config->terms, list) { 1343 switch (term->type_term) { 1344 case PARSE_EVENTS__TERM_TYPE_USER: 1345 type = perf_pmu__format_type(pmu, term->config); 1346 if (type != PERF_PMU_FORMAT_VALUE_CONFIG) 1347 continue; 1348 bits |= perf_pmu__format_bits(pmu, term->config); 1349 break; 1350 case PARSE_EVENTS__TERM_TYPE_CONFIG: 1351 bits = ~(u64)0; 1352 break; 1353 case PARSE_EVENTS__TERM_TYPE_CONFIG1: 1354 case PARSE_EVENTS__TERM_TYPE_CONFIG2: 1355 case PARSE_EVENTS__TERM_TYPE_CONFIG3: 1356 case PARSE_EVENTS__TERM_TYPE_NAME: 1357 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD: 1358 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ: 1359 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE: 1360 case PARSE_EVENTS__TERM_TYPE_TIME: 1361 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH: 1362 case PARSE_EVENTS__TERM_TYPE_STACKSIZE: 1363 case PARSE_EVENTS__TERM_TYPE_NOINHERIT: 1364 case PARSE_EVENTS__TERM_TYPE_INHERIT: 1365 case PARSE_EVENTS__TERM_TYPE_MAX_STACK: 1366 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS: 1367 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE: 1368 case PARSE_EVENTS__TERM_TYPE_OVERWRITE: 1369 case PARSE_EVENTS__TERM_TYPE_DRV_CFG: 1370 case PARSE_EVENTS__TERM_TYPE_PERCORE: 1371 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT: 1372 case PARSE_EVENTS__TERM_TYPE_AUX_ACTION: 1373 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE: 1374 case PARSE_EVENTS__TERM_TYPE_METRIC_ID: 1375 case PARSE_EVENTS__TERM_TYPE_RAW: 1376 case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE: 1377 case PARSE_EVENTS__TERM_TYPE_HARDWARE: 1378 case PARSE_EVENTS__TERM_TYPE_CPU: 1379 default: 1380 break; 1381 } 1382 } 1383 1384 if (bits) 1385 ADD_CONFIG_TERM_VAL(CFG_CHG, cfg_chg, bits, false); 1386 1387 #undef ADD_CONFIG_TERM 1388 return 0; 1389 } 1390 1391 int parse_events_add_tracepoint(struct parse_events_state *parse_state, 1392 struct list_head *list, 1393 const char *sys, const char *event, 1394 struct parse_events_error *err, 1395 struct parse_events_terms *head_config, void *loc_) 1396 { 1397 YYLTYPE *loc = loc_; 1398 1399 if (head_config) { 1400 struct perf_event_attr attr; 1401 1402 if (config_attr(&attr, head_config, err, 1403 config_term_tracepoint)) 1404 return -EINVAL; 1405 } 1406 1407 if (strpbrk(sys, "*?")) 1408 return add_tracepoint_multi_sys(parse_state, list, sys, event, 1409 err, head_config, loc); 1410 else 1411 return add_tracepoint_event(parse_state, list, sys, event, 1412 err, head_config, loc); 1413 } 1414 1415 static int __parse_events_add_numeric(struct parse_events_state *parse_state, 1416 struct list_head *list, 1417 struct perf_pmu *pmu, u32 type, u32 extended_type, 1418 u64 config, const struct parse_events_terms *head_config, 1419 struct evsel *first_wildcard_match) 1420 { 1421 struct perf_event_attr attr; 1422 LIST_HEAD(config_terms); 1423 const char *name, *metric_id; 1424 struct perf_cpu_map *cpus; 1425 int ret; 1426 1427 memset(&attr, 0, sizeof(attr)); 1428 attr.type = type; 1429 attr.config = config; 1430 if (extended_type && (type == PERF_TYPE_HARDWARE || type == PERF_TYPE_HW_CACHE)) { 1431 assert(perf_pmus__supports_extended_type()); 1432 attr.config |= (u64)extended_type << PERF_PMU_TYPE_SHIFT; 1433 } 1434 1435 if (head_config) { 1436 if (config_attr(&attr, head_config, parse_state->error, 1437 config_term_common)) 1438 return -EINVAL; 1439 1440 if (get_config_terms(head_config, &config_terms)) 1441 return -ENOMEM; 1442 } 1443 1444 name = get_config_name(head_config); 1445 metric_id = get_config_metric_id(head_config); 1446 cpus = get_config_cpu(head_config); 1447 ret = __add_event(list, &parse_state->idx, &attr, /*init_attr*/true, name, 1448 metric_id, pmu, &config_terms, first_wildcard_match, 1449 cpus, /*alternate_hw_config=*/PERF_COUNT_HW_MAX) ? 0 : -ENOMEM; 1450 perf_cpu_map__put(cpus); 1451 free_config_terms(&config_terms); 1452 return ret; 1453 } 1454 1455 int parse_events_add_numeric(struct parse_events_state *parse_state, 1456 struct list_head *list, 1457 u32 type, u64 config, 1458 const struct parse_events_terms *head_config, 1459 bool wildcard) 1460 { 1461 struct perf_pmu *pmu = NULL; 1462 bool found_supported = false; 1463 1464 /* Wildcards on numeric values are only supported by core PMUs. */ 1465 if (wildcard && perf_pmus__supports_extended_type()) { 1466 struct evsel *first_wildcard_match = NULL; 1467 while ((pmu = perf_pmus__scan_core(pmu)) != NULL) { 1468 int ret; 1469 1470 found_supported = true; 1471 if (parse_events__filter_pmu(parse_state, pmu)) 1472 continue; 1473 1474 ret = __parse_events_add_numeric(parse_state, list, pmu, 1475 type, pmu->type, 1476 config, head_config, 1477 first_wildcard_match); 1478 if (ret) 1479 return ret; 1480 if (first_wildcard_match == NULL) 1481 first_wildcard_match = 1482 container_of(list->prev, struct evsel, core.node); 1483 } 1484 if (found_supported) 1485 return 0; 1486 } 1487 return __parse_events_add_numeric(parse_state, list, perf_pmus__find_by_type(type), 1488 type, /*extended_type=*/0, config, head_config, 1489 /*first_wildcard_match=*/NULL); 1490 } 1491 1492 static bool config_term_percore(struct list_head *config_terms) 1493 { 1494 struct evsel_config_term *term; 1495 1496 list_for_each_entry(term, config_terms, list) { 1497 if (term->type == EVSEL__CONFIG_TERM_PERCORE) 1498 return term->val.percore; 1499 } 1500 1501 return false; 1502 } 1503 1504 static int parse_events_add_pmu(struct parse_events_state *parse_state, 1505 struct list_head *list, struct perf_pmu *pmu, 1506 const struct parse_events_terms *const_parsed_terms, 1507 struct evsel *first_wildcard_match, u64 alternate_hw_config) 1508 { 1509 struct perf_event_attr attr; 1510 struct perf_pmu_info info; 1511 struct evsel *evsel; 1512 struct parse_events_error *err = parse_state->error; 1513 LIST_HEAD(config_terms); 1514 struct parse_events_terms parsed_terms; 1515 bool alias_rewrote_terms = false; 1516 struct perf_cpu_map *term_cpu = NULL; 1517 1518 if (verbose > 1) { 1519 struct strbuf sb; 1520 1521 strbuf_init(&sb, /*hint=*/ 0); 1522 if (pmu->selectable && const_parsed_terms && 1523 list_empty(&const_parsed_terms->terms)) { 1524 strbuf_addf(&sb, "%s//", pmu->name); 1525 } else { 1526 strbuf_addf(&sb, "%s/", pmu->name); 1527 parse_events_terms__to_strbuf(const_parsed_terms, &sb); 1528 strbuf_addch(&sb, '/'); 1529 } 1530 fprintf(stderr, "Attempt to add: %s\n", sb.buf); 1531 strbuf_release(&sb); 1532 } 1533 1534 memset(&attr, 0, sizeof(attr)); 1535 if (pmu->perf_event_attr_init_default) 1536 pmu->perf_event_attr_init_default(pmu, &attr); 1537 1538 attr.type = pmu->type; 1539 1540 if (!const_parsed_terms || list_empty(&const_parsed_terms->terms)) { 1541 evsel = __add_event(list, &parse_state->idx, &attr, 1542 /*init_attr=*/true, /*name=*/NULL, 1543 /*metric_id=*/NULL, pmu, 1544 /*config_terms=*/NULL, first_wildcard_match, 1545 /*cpu_list=*/NULL, alternate_hw_config); 1546 return evsel ? 0 : -ENOMEM; 1547 } 1548 1549 parse_events_terms__init(&parsed_terms); 1550 if (const_parsed_terms) { 1551 int ret = parse_events_terms__copy(const_parsed_terms, &parsed_terms); 1552 1553 if (ret) 1554 return ret; 1555 } 1556 fix_raw(&parsed_terms, pmu); 1557 1558 /* Configure attr/terms with a known PMU, this will set hardcoded terms. */ 1559 if (config_attr(&attr, &parsed_terms, parse_state->error, config_term_pmu)) { 1560 parse_events_terms__exit(&parsed_terms); 1561 return -EINVAL; 1562 } 1563 1564 /* Look for event names in the terms and rewrite into format based terms. */ 1565 if (perf_pmu__check_alias(pmu, &parsed_terms, 1566 &info, &alias_rewrote_terms, 1567 &alternate_hw_config, err)) { 1568 parse_events_terms__exit(&parsed_terms); 1569 return -EINVAL; 1570 } 1571 1572 if (verbose > 1) { 1573 struct strbuf sb; 1574 1575 strbuf_init(&sb, /*hint=*/ 0); 1576 parse_events_terms__to_strbuf(&parsed_terms, &sb); 1577 fprintf(stderr, "..after resolving event: %s/%s/\n", pmu->name, sb.buf); 1578 strbuf_release(&sb); 1579 } 1580 1581 /* Configure attr/terms again if an alias was expanded. */ 1582 if (alias_rewrote_terms && 1583 config_attr(&attr, &parsed_terms, parse_state->error, config_term_pmu)) { 1584 parse_events_terms__exit(&parsed_terms); 1585 return -EINVAL; 1586 } 1587 1588 if (get_config_terms(&parsed_terms, &config_terms)) { 1589 parse_events_terms__exit(&parsed_terms); 1590 return -ENOMEM; 1591 } 1592 1593 /* 1594 * When using default config, record which bits of attr->config were 1595 * changed by the user. 1596 */ 1597 if (pmu->perf_event_attr_init_default && 1598 get_config_chgs(pmu, &parsed_terms, &config_terms)) { 1599 parse_events_terms__exit(&parsed_terms); 1600 return -ENOMEM; 1601 } 1602 1603 /* Skip configuring hard coded terms that were applied by config_attr. */ 1604 if (perf_pmu__config(pmu, &attr, &parsed_terms, /*apply_hardcoded=*/false, 1605 parse_state->error)) { 1606 free_config_terms(&config_terms); 1607 parse_events_terms__exit(&parsed_terms); 1608 return -EINVAL; 1609 } 1610 1611 term_cpu = get_config_cpu(&parsed_terms); 1612 evsel = __add_event(list, &parse_state->idx, &attr, /*init_attr=*/true, 1613 get_config_name(&parsed_terms), 1614 get_config_metric_id(&parsed_terms), pmu, 1615 &config_terms, first_wildcard_match, term_cpu, alternate_hw_config); 1616 perf_cpu_map__put(term_cpu); 1617 if (!evsel) { 1618 parse_events_terms__exit(&parsed_terms); 1619 return -ENOMEM; 1620 } 1621 1622 if (evsel->name) 1623 evsel->use_config_name = true; 1624 1625 evsel->percore = config_term_percore(&evsel->config_terms); 1626 1627 parse_events_terms__exit(&parsed_terms); 1628 free((char *)evsel->unit); 1629 evsel->unit = strdup(info.unit); 1630 evsel->scale = info.scale; 1631 evsel->per_pkg = info.per_pkg; 1632 evsel->snapshot = info.snapshot; 1633 evsel->retirement_latency.mean = info.retirement_latency_mean; 1634 evsel->retirement_latency.min = info.retirement_latency_min; 1635 evsel->retirement_latency.max = info.retirement_latency_max; 1636 1637 return 0; 1638 } 1639 1640 int parse_events_multi_pmu_add(struct parse_events_state *parse_state, 1641 const char *event_name, u64 hw_config, 1642 const struct parse_events_terms *const_parsed_terms, 1643 struct list_head **listp, void *loc_) 1644 { 1645 struct parse_events_term *term; 1646 struct list_head *list = NULL; 1647 struct perf_pmu *pmu = NULL; 1648 YYLTYPE *loc = loc_; 1649 int ok = 0; 1650 const char *config; 1651 struct parse_events_terms parsed_terms; 1652 struct evsel *first_wildcard_match = NULL; 1653 1654 *listp = NULL; 1655 1656 parse_events_terms__init(&parsed_terms); 1657 if (const_parsed_terms) { 1658 int ret = parse_events_terms__copy(const_parsed_terms, &parsed_terms); 1659 1660 if (ret) 1661 return ret; 1662 } 1663 1664 config = strdup(event_name); 1665 if (!config) 1666 goto out_err; 1667 1668 if (parse_events_term__num(&term, 1669 PARSE_EVENTS__TERM_TYPE_USER, 1670 config, /*num=*/1, /*novalue=*/true, 1671 loc, /*loc_val=*/NULL) < 0) { 1672 zfree(&config); 1673 goto out_err; 1674 } 1675 list_add_tail(&term->list, &parsed_terms.terms); 1676 1677 /* Add it for all PMUs that support the alias */ 1678 list = malloc(sizeof(struct list_head)); 1679 if (!list) 1680 goto out_err; 1681 1682 INIT_LIST_HEAD(list); 1683 1684 while ((pmu = perf_pmus__scan(pmu)) != NULL) { 1685 if (parse_events__filter_pmu(parse_state, pmu)) 1686 continue; 1687 1688 if (!perf_pmu__have_event(pmu, event_name)) 1689 continue; 1690 1691 if (!parse_events_add_pmu(parse_state, list, pmu, 1692 &parsed_terms, first_wildcard_match, hw_config)) { 1693 struct strbuf sb; 1694 1695 strbuf_init(&sb, /*hint=*/ 0); 1696 parse_events_terms__to_strbuf(&parsed_terms, &sb); 1697 pr_debug("%s -> %s/%s/\n", event_name, pmu->name, sb.buf); 1698 strbuf_release(&sb); 1699 ok++; 1700 } 1701 if (first_wildcard_match == NULL) 1702 first_wildcard_match = container_of(list->prev, struct evsel, core.node); 1703 } 1704 1705 if (parse_state->fake_pmu) { 1706 if (!parse_events_add_pmu(parse_state, list, perf_pmus__fake_pmu(), &parsed_terms, 1707 first_wildcard_match, hw_config)) { 1708 struct strbuf sb; 1709 1710 strbuf_init(&sb, /*hint=*/ 0); 1711 parse_events_terms__to_strbuf(&parsed_terms, &sb); 1712 pr_debug("%s -> fake/%s/\n", event_name, sb.buf); 1713 strbuf_release(&sb); 1714 ok++; 1715 } 1716 } 1717 1718 out_err: 1719 parse_events_terms__exit(&parsed_terms); 1720 if (ok) 1721 *listp = list; 1722 else 1723 free(list); 1724 1725 return ok ? 0 : -1; 1726 } 1727 1728 int parse_events_multi_pmu_add_or_add_pmu(struct parse_events_state *parse_state, 1729 const char *event_or_pmu, 1730 const struct parse_events_terms *const_parsed_terms, 1731 struct list_head **listp, 1732 void *loc_) 1733 { 1734 YYLTYPE *loc = loc_; 1735 struct perf_pmu *pmu; 1736 int ok = 0; 1737 char *help; 1738 struct evsel *first_wildcard_match = NULL; 1739 1740 *listp = malloc(sizeof(**listp)); 1741 if (!*listp) 1742 return -ENOMEM; 1743 1744 INIT_LIST_HEAD(*listp); 1745 1746 /* Attempt to add to list assuming event_or_pmu is a PMU name. */ 1747 pmu = perf_pmus__find(event_or_pmu); 1748 if (pmu && !parse_events_add_pmu(parse_state, *listp, pmu, const_parsed_terms, 1749 first_wildcard_match, 1750 /*alternate_hw_config=*/PERF_COUNT_HW_MAX)) 1751 return 0; 1752 1753 if (parse_state->fake_pmu) { 1754 if (!parse_events_add_pmu(parse_state, *listp, perf_pmus__fake_pmu(), 1755 const_parsed_terms, 1756 first_wildcard_match, 1757 /*alternate_hw_config=*/PERF_COUNT_HW_MAX)) 1758 return 0; 1759 } 1760 1761 pmu = NULL; 1762 /* Failed to add, try wildcard expansion of event_or_pmu as a PMU name. */ 1763 while ((pmu = perf_pmus__scan(pmu)) != NULL) { 1764 if (!parse_events__filter_pmu(parse_state, pmu) && 1765 perf_pmu__wildcard_match(pmu, event_or_pmu)) { 1766 if (!parse_events_add_pmu(parse_state, *listp, pmu, 1767 const_parsed_terms, 1768 first_wildcard_match, 1769 /*alternate_hw_config=*/PERF_COUNT_HW_MAX)) { 1770 ok++; 1771 parse_state->wild_card_pmus = true; 1772 } 1773 if (first_wildcard_match == NULL) 1774 first_wildcard_match = 1775 container_of((*listp)->prev, struct evsel, core.node); 1776 } 1777 } 1778 if (ok) 1779 return 0; 1780 1781 /* Failure to add, assume event_or_pmu is an event name. */ 1782 zfree(listp); 1783 if (!parse_events_multi_pmu_add(parse_state, event_or_pmu, PERF_COUNT_HW_MAX, 1784 const_parsed_terms, listp, loc)) 1785 return 0; 1786 1787 if (asprintf(&help, "Unable to find PMU or event on a PMU of '%s'", event_or_pmu) < 0) 1788 help = NULL; 1789 parse_events_error__handle(parse_state->error, loc->first_column, 1790 strdup("Bad event or PMU"), 1791 help); 1792 zfree(listp); 1793 return -EINVAL; 1794 } 1795 1796 void parse_events__set_leader(char *name, struct list_head *list) 1797 { 1798 struct evsel *leader; 1799 1800 if (list_empty(list)) { 1801 WARN_ONCE(true, "WARNING: failed to set leader: empty list"); 1802 return; 1803 } 1804 1805 leader = list_first_entry(list, struct evsel, core.node); 1806 __perf_evlist__set_leader(list, &leader->core); 1807 zfree(&leader->group_name); 1808 leader->group_name = name; 1809 } 1810 1811 static int parse_events__modifier_list(struct parse_events_state *parse_state, 1812 YYLTYPE *loc, 1813 struct list_head *list, 1814 struct parse_events_modifier mod, 1815 bool group) 1816 { 1817 struct evsel *evsel; 1818 1819 if (!group && mod.weak) { 1820 parse_events_error__handle(parse_state->error, loc->first_column, 1821 strdup("Weak modifier is for use with groups"), NULL); 1822 return -EINVAL; 1823 } 1824 1825 __evlist__for_each_entry(list, evsel) { 1826 /* Translate modifiers into the equivalent evsel excludes. */ 1827 int eu = group ? evsel->core.attr.exclude_user : 0; 1828 int ek = group ? evsel->core.attr.exclude_kernel : 0; 1829 int eh = group ? evsel->core.attr.exclude_hv : 0; 1830 int eH = group ? evsel->core.attr.exclude_host : 0; 1831 int eG = group ? evsel->core.attr.exclude_guest : 0; 1832 int exclude = eu | ek | eh; 1833 int exclude_GH = eG | eH; 1834 1835 if (mod.user) { 1836 if (!exclude) 1837 exclude = eu = ek = eh = 1; 1838 eu = 0; 1839 } 1840 if (mod.kernel) { 1841 if (!exclude) 1842 exclude = eu = ek = eh = 1; 1843 ek = 0; 1844 } 1845 if (mod.hypervisor) { 1846 if (!exclude) 1847 exclude = eu = ek = eh = 1; 1848 eh = 0; 1849 } 1850 if (mod.guest) { 1851 if (!exclude_GH) 1852 exclude_GH = eG = eH = 1; 1853 eG = 0; 1854 } 1855 if (mod.host) { 1856 if (!exclude_GH) 1857 exclude_GH = eG = eH = 1; 1858 eH = 0; 1859 } 1860 if (!exclude_GH && exclude_GH_default) { 1861 if (perf_host) 1862 eG = 1; 1863 else if (perf_guest) 1864 eH = 1; 1865 } 1866 1867 evsel->core.attr.exclude_user = eu; 1868 evsel->core.attr.exclude_kernel = ek; 1869 evsel->core.attr.exclude_hv = eh; 1870 evsel->core.attr.exclude_host = eH; 1871 evsel->core.attr.exclude_guest = eG; 1872 evsel->exclude_GH = exclude_GH; 1873 1874 /* Simple modifiers copied to the evsel. */ 1875 if (mod.precise) { 1876 u8 precise = evsel->core.attr.precise_ip + mod.precise; 1877 /* 1878 * precise ip: 1879 * 1880 * 0 - SAMPLE_IP can have arbitrary skid 1881 * 1 - SAMPLE_IP must have constant skid 1882 * 2 - SAMPLE_IP requested to have 0 skid 1883 * 3 - SAMPLE_IP must have 0 skid 1884 * 1885 * See also PERF_RECORD_MISC_EXACT_IP 1886 */ 1887 if (precise > 3) { 1888 char *help; 1889 1890 if (asprintf(&help, 1891 "Maximum combined precise value is 3, adding precision to \"%s\"", 1892 evsel__name(evsel)) > 0) { 1893 parse_events_error__handle(parse_state->error, 1894 loc->first_column, 1895 help, NULL); 1896 } 1897 return -EINVAL; 1898 } 1899 evsel->core.attr.precise_ip = precise; 1900 } 1901 if (mod.precise_max) 1902 evsel->precise_max = 1; 1903 if (mod.non_idle) 1904 evsel->core.attr.exclude_idle = 1; 1905 if (mod.sample_read) 1906 evsel->sample_read = 1; 1907 if (mod.pinned && evsel__is_group_leader(evsel)) 1908 evsel->core.attr.pinned = 1; 1909 if (mod.exclusive && evsel__is_group_leader(evsel)) 1910 evsel->core.attr.exclusive = 1; 1911 if (mod.weak) 1912 evsel->weak_group = true; 1913 if (mod.bpf) 1914 evsel->bpf_counter = true; 1915 if (mod.retire_lat) 1916 evsel->retire_lat = true; 1917 } 1918 return 0; 1919 } 1920 1921 int parse_events__modifier_group(struct parse_events_state *parse_state, void *loc, 1922 struct list_head *list, 1923 struct parse_events_modifier mod) 1924 { 1925 return parse_events__modifier_list(parse_state, loc, list, mod, /*group=*/true); 1926 } 1927 1928 int parse_events__modifier_event(struct parse_events_state *parse_state, void *loc, 1929 struct list_head *list, 1930 struct parse_events_modifier mod) 1931 { 1932 return parse_events__modifier_list(parse_state, loc, list, mod, /*group=*/false); 1933 } 1934 1935 int parse_events__set_default_name(struct list_head *list, char *name) 1936 { 1937 struct evsel *evsel; 1938 bool used_name = false; 1939 1940 __evlist__for_each_entry(list, evsel) { 1941 if (!evsel->name) { 1942 evsel->name = used_name ? strdup(name) : name; 1943 used_name = true; 1944 if (!evsel->name) 1945 return -ENOMEM; 1946 } 1947 } 1948 if (!used_name) 1949 free(name); 1950 return 0; 1951 } 1952 1953 static int parse_events__scanner(const char *str, 1954 FILE *input, 1955 struct parse_events_state *parse_state) 1956 { 1957 YY_BUFFER_STATE buffer; 1958 void *scanner; 1959 int ret; 1960 1961 ret = parse_events_lex_init_extra(parse_state, &scanner); 1962 if (ret) 1963 return ret; 1964 1965 if (str) 1966 buffer = parse_events__scan_string(str, scanner); 1967 else 1968 parse_events_set_in(input, scanner); 1969 1970 #ifdef PARSER_DEBUG 1971 parse_events_debug = 1; 1972 parse_events_set_debug(1, scanner); 1973 #endif 1974 ret = parse_events_parse(parse_state, scanner); 1975 1976 if (str) { 1977 parse_events__flush_buffer(buffer, scanner); 1978 parse_events__delete_buffer(buffer, scanner); 1979 } 1980 parse_events_lex_destroy(scanner); 1981 return ret; 1982 } 1983 1984 /* 1985 * parse event config string, return a list of event terms. 1986 */ 1987 int parse_events_terms(struct parse_events_terms *terms, const char *str, FILE *input) 1988 { 1989 struct parse_events_state parse_state = { 1990 .terms = NULL, 1991 .stoken = PE_START_TERMS, 1992 }; 1993 int ret; 1994 1995 ret = parse_events__scanner(str, input, &parse_state); 1996 if (!ret) 1997 list_splice(&parse_state.terms->terms, &terms->terms); 1998 1999 zfree(&parse_state.terms); 2000 return ret; 2001 } 2002 2003 static int evsel__compute_group_pmu_name(struct evsel *evsel, 2004 const struct list_head *head) 2005 { 2006 struct evsel *leader = evsel__leader(evsel); 2007 struct evsel *pos; 2008 const char *group_pmu_name; 2009 struct perf_pmu *pmu = evsel__find_pmu(evsel); 2010 2011 if (!pmu) { 2012 /* 2013 * For PERF_TYPE_HARDWARE and PERF_TYPE_HW_CACHE types the PMU 2014 * is a core PMU, but in heterogeneous systems this is 2015 * unknown. For now pick the first core PMU. 2016 */ 2017 pmu = perf_pmus__scan_core(NULL); 2018 } 2019 if (!pmu) { 2020 pr_debug("No PMU found for '%s'\n", evsel__name(evsel)); 2021 return -EINVAL; 2022 } 2023 group_pmu_name = pmu->name; 2024 /* 2025 * Software events may be in a group with other uncore PMU events. Use 2026 * the pmu_name of the first non-software event to avoid breaking the 2027 * software event out of the group. 2028 * 2029 * Aux event leaders, like intel_pt, expect a group with events from 2030 * other PMUs, so substitute the AUX event's PMU in this case. 2031 */ 2032 if (perf_pmu__is_software(pmu) || evsel__is_aux_event(leader)) { 2033 struct perf_pmu *leader_pmu = evsel__find_pmu(leader); 2034 2035 if (!leader_pmu) { 2036 /* As with determining pmu above. */ 2037 leader_pmu = perf_pmus__scan_core(NULL); 2038 } 2039 /* 2040 * Starting with the leader, find the first event with a named 2041 * non-software PMU. for_each_group_(member|evsel) isn't used as 2042 * the list isn't yet sorted putting evsel's in the same group 2043 * together. 2044 */ 2045 if (leader_pmu && !perf_pmu__is_software(leader_pmu)) { 2046 group_pmu_name = leader_pmu->name; 2047 } else if (leader->core.nr_members > 1) { 2048 list_for_each_entry(pos, head, core.node) { 2049 struct perf_pmu *pos_pmu; 2050 2051 if (pos == leader || evsel__leader(pos) != leader) 2052 continue; 2053 pos_pmu = evsel__find_pmu(pos); 2054 if (!pos_pmu) { 2055 /* As with determining pmu above. */ 2056 pos_pmu = perf_pmus__scan_core(NULL); 2057 } 2058 if (pos_pmu && !perf_pmu__is_software(pos_pmu)) { 2059 group_pmu_name = pos_pmu->name; 2060 break; 2061 } 2062 } 2063 } 2064 } 2065 /* Record computed name. */ 2066 evsel->group_pmu_name = strdup(group_pmu_name); 2067 return evsel->group_pmu_name ? 0 : -ENOMEM; 2068 } 2069 2070 __weak int arch_evlist__cmp(const struct evsel *lhs, const struct evsel *rhs) 2071 { 2072 /* Order by insertion index. */ 2073 return lhs->core.idx - rhs->core.idx; 2074 } 2075 2076 static int evlist__cmp(void *_fg_idx, const struct list_head *l, const struct list_head *r) 2077 { 2078 const struct perf_evsel *lhs_core = container_of(l, struct perf_evsel, node); 2079 const struct evsel *lhs = container_of(lhs_core, struct evsel, core); 2080 const struct perf_evsel *rhs_core = container_of(r, struct perf_evsel, node); 2081 const struct evsel *rhs = container_of(rhs_core, struct evsel, core); 2082 int *force_grouped_idx = _fg_idx; 2083 int lhs_sort_idx, rhs_sort_idx, ret; 2084 const char *lhs_pmu_name, *rhs_pmu_name; 2085 2086 /* 2087 * Get the indexes of the 2 events to sort. If the events are 2088 * in groups then the leader's index is used otherwise the 2089 * event's index is used. An index may be forced for events that 2090 * must be in the same group, namely Intel topdown events. 2091 */ 2092 if (*force_grouped_idx != -1 && arch_evsel__must_be_in_group(lhs)) { 2093 lhs_sort_idx = *force_grouped_idx; 2094 } else { 2095 bool lhs_has_group = lhs_core->leader != lhs_core || lhs_core->nr_members > 1; 2096 2097 lhs_sort_idx = lhs_has_group ? lhs_core->leader->idx : lhs_core->idx; 2098 } 2099 if (*force_grouped_idx != -1 && arch_evsel__must_be_in_group(rhs)) { 2100 rhs_sort_idx = *force_grouped_idx; 2101 } else { 2102 bool rhs_has_group = rhs_core->leader != rhs_core || rhs_core->nr_members > 1; 2103 2104 rhs_sort_idx = rhs_has_group ? rhs_core->leader->idx : rhs_core->idx; 2105 } 2106 2107 /* If the indices differ then respect the insertion order. */ 2108 if (lhs_sort_idx != rhs_sort_idx) 2109 return lhs_sort_idx - rhs_sort_idx; 2110 2111 /* 2112 * Ignoring forcing, lhs_sort_idx == rhs_sort_idx so lhs and rhs should 2113 * be in the same group. Events in the same group need to be ordered by 2114 * their grouping PMU name as the group will be broken to ensure only 2115 * events on the same PMU are programmed together. 2116 * 2117 * With forcing the lhs_sort_idx == rhs_sort_idx shows that one or both 2118 * events are being forced to be at force_group_index. If only one event 2119 * is being forced then the other event is the group leader of the group 2120 * we're trying to force the event into. Ensure for the force grouped 2121 * case that the PMU name ordering is also respected. 2122 */ 2123 lhs_pmu_name = lhs->group_pmu_name; 2124 rhs_pmu_name = rhs->group_pmu_name; 2125 ret = strcmp(lhs_pmu_name, rhs_pmu_name); 2126 if (ret) 2127 return ret; 2128 2129 /* 2130 * Architecture specific sorting, by default sort events in the same 2131 * group with the same PMU by their insertion index. On Intel topdown 2132 * constraints must be adhered to - slots first, etc. 2133 */ 2134 return arch_evlist__cmp(lhs, rhs); 2135 } 2136 2137 static int parse_events__sort_events_and_fix_groups(struct list_head *list) 2138 { 2139 int idx = 0, force_grouped_idx = -1; 2140 struct evsel *pos, *cur_leader = NULL; 2141 struct perf_evsel *cur_leaders_grp = NULL; 2142 bool idx_changed = false; 2143 int orig_num_leaders = 0, num_leaders = 0; 2144 int ret; 2145 struct evsel *force_grouped_leader = NULL; 2146 bool last_event_was_forced_leader = false; 2147 2148 /* 2149 * Compute index to insert ungrouped events at. Place them where the 2150 * first ungrouped event appears. 2151 */ 2152 list_for_each_entry(pos, list, core.node) { 2153 const struct evsel *pos_leader = evsel__leader(pos); 2154 2155 ret = evsel__compute_group_pmu_name(pos, list); 2156 if (ret) 2157 return ret; 2158 2159 if (pos == pos_leader) 2160 orig_num_leaders++; 2161 2162 /* 2163 * Ensure indexes are sequential, in particular for multiple 2164 * event lists being merged. The indexes are used to detect when 2165 * the user order is modified. 2166 */ 2167 pos->core.idx = idx++; 2168 2169 /* 2170 * Remember an index to sort all forced grouped events 2171 * together to. Use the group leader as some events 2172 * must appear first within the group. 2173 */ 2174 if (force_grouped_idx == -1 && arch_evsel__must_be_in_group(pos)) 2175 force_grouped_idx = pos_leader->core.idx; 2176 } 2177 2178 /* Sort events. */ 2179 list_sort(&force_grouped_idx, list, evlist__cmp); 2180 2181 /* 2182 * Recompute groups, splitting for PMUs and adding groups for events 2183 * that require them. 2184 */ 2185 idx = 0; 2186 list_for_each_entry(pos, list, core.node) { 2187 const struct evsel *pos_leader = evsel__leader(pos); 2188 const char *pos_pmu_name = pos->group_pmu_name; 2189 const char *cur_leader_pmu_name; 2190 bool pos_force_grouped = force_grouped_idx != -1 && 2191 arch_evsel__must_be_in_group(pos); 2192 2193 /* Reset index and nr_members. */ 2194 if (pos->core.idx != idx) 2195 idx_changed = true; 2196 pos->core.idx = idx++; 2197 pos->core.nr_members = 0; 2198 2199 /* 2200 * Set the group leader respecting the given groupings and that 2201 * groups can't span PMUs. 2202 */ 2203 if (!cur_leader) { 2204 cur_leader = pos; 2205 cur_leaders_grp = &pos->core; 2206 if (pos_force_grouped) 2207 force_grouped_leader = pos; 2208 } 2209 2210 cur_leader_pmu_name = cur_leader->group_pmu_name; 2211 if (strcmp(cur_leader_pmu_name, pos_pmu_name)) { 2212 /* PMU changed so the group/leader must change. */ 2213 cur_leader = pos; 2214 cur_leaders_grp = pos->core.leader; 2215 if (pos_force_grouped && force_grouped_leader == NULL) 2216 force_grouped_leader = pos; 2217 } else if (cur_leaders_grp != pos->core.leader) { 2218 bool split_even_if_last_leader_was_forced = true; 2219 2220 /* 2221 * Event is for a different group. If the last event was 2222 * the forced group leader then subsequent group events 2223 * and forced events should be in the same group. If 2224 * there are no other forced group events then the 2225 * forced group leader wasn't really being forced into a 2226 * group, it just set arch_evsel__must_be_in_group, and 2227 * we don't want the group to split here. 2228 */ 2229 if (force_grouped_idx != -1 && last_event_was_forced_leader) { 2230 struct evsel *pos2 = pos; 2231 /* 2232 * Search the whole list as the group leaders 2233 * aren't currently valid. 2234 */ 2235 list_for_each_entry_continue(pos2, list, core.node) { 2236 if (pos->core.leader == pos2->core.leader && 2237 arch_evsel__must_be_in_group(pos2)) { 2238 split_even_if_last_leader_was_forced = false; 2239 break; 2240 } 2241 } 2242 } 2243 if (!last_event_was_forced_leader || split_even_if_last_leader_was_forced) { 2244 if (pos_force_grouped) { 2245 if (force_grouped_leader) { 2246 cur_leader = force_grouped_leader; 2247 cur_leaders_grp = force_grouped_leader->core.leader; 2248 } else { 2249 cur_leader = force_grouped_leader = pos; 2250 cur_leaders_grp = &pos->core; 2251 } 2252 } else { 2253 cur_leader = pos; 2254 cur_leaders_grp = pos->core.leader; 2255 } 2256 } 2257 } 2258 if (pos_leader != cur_leader) { 2259 /* The leader changed so update it. */ 2260 evsel__set_leader(pos, cur_leader); 2261 } 2262 last_event_was_forced_leader = (force_grouped_leader == pos); 2263 } 2264 list_for_each_entry(pos, list, core.node) { 2265 struct evsel *pos_leader = evsel__leader(pos); 2266 2267 if (pos == pos_leader) 2268 num_leaders++; 2269 pos_leader->core.nr_members++; 2270 } 2271 return (idx_changed || num_leaders != orig_num_leaders) ? 1 : 0; 2272 } 2273 2274 int __parse_events(struct evlist *evlist, const char *str, const char *pmu_filter, 2275 struct parse_events_error *err, bool fake_pmu, 2276 bool warn_if_reordered, bool fake_tp) 2277 { 2278 struct parse_events_state parse_state = { 2279 .list = LIST_HEAD_INIT(parse_state.list), 2280 .idx = evlist->core.nr_entries, 2281 .error = err, 2282 .stoken = PE_START_EVENTS, 2283 .fake_pmu = fake_pmu, 2284 .fake_tp = fake_tp, 2285 .pmu_filter = pmu_filter, 2286 .match_legacy_cache_terms = true, 2287 }; 2288 int ret, ret2; 2289 2290 ret = parse_events__scanner(str, /*input=*/ NULL, &parse_state); 2291 2292 if (!ret && list_empty(&parse_state.list)) { 2293 WARN_ONCE(true, "WARNING: event parser found nothing\n"); 2294 return -1; 2295 } 2296 2297 ret2 = parse_events__sort_events_and_fix_groups(&parse_state.list); 2298 if (ret2 < 0) 2299 return ret; 2300 2301 /* 2302 * Add list to the evlist even with errors to allow callers to clean up. 2303 */ 2304 evlist__splice_list_tail(evlist, &parse_state.list); 2305 2306 if (ret2 && warn_if_reordered && !parse_state.wild_card_pmus) { 2307 pr_warning("WARNING: events were regrouped to match PMUs\n"); 2308 2309 if (verbose > 0) { 2310 struct strbuf sb = STRBUF_INIT; 2311 2312 evlist__uniquify_evsel_names(evlist, &stat_config); 2313 evlist__format_evsels(evlist, &sb, 2048); 2314 pr_debug("evlist after sorting/fixing: '%s'\n", sb.buf); 2315 strbuf_release(&sb); 2316 } 2317 } 2318 if (!ret) { 2319 struct evsel *last; 2320 2321 last = evlist__last(evlist); 2322 last->cmdline_group_boundary = true; 2323 2324 return 0; 2325 } 2326 2327 /* 2328 * There are 2 users - builtin-record and builtin-test objects. 2329 * Both call evlist__delete in case of error, so we dont 2330 * need to bother. 2331 */ 2332 return ret; 2333 } 2334 2335 int parse_event(struct evlist *evlist, const char *str) 2336 { 2337 struct parse_events_error err; 2338 int ret; 2339 2340 parse_events_error__init(&err); 2341 ret = parse_events(evlist, str, &err); 2342 parse_events_error__exit(&err); 2343 return ret; 2344 } 2345 2346 struct parse_events_error_entry { 2347 /** @list: The list the error is part of. */ 2348 struct list_head list; 2349 /** @idx: index in the parsed string */ 2350 int idx; 2351 /** @str: string to display at the index */ 2352 char *str; 2353 /** @help: optional help string */ 2354 char *help; 2355 }; 2356 2357 void parse_events_error__init(struct parse_events_error *err) 2358 { 2359 INIT_LIST_HEAD(&err->list); 2360 } 2361 2362 void parse_events_error__exit(struct parse_events_error *err) 2363 { 2364 struct parse_events_error_entry *pos, *tmp; 2365 2366 list_for_each_entry_safe(pos, tmp, &err->list, list) { 2367 zfree(&pos->str); 2368 zfree(&pos->help); 2369 list_del_init(&pos->list); 2370 free(pos); 2371 } 2372 } 2373 2374 void parse_events_error__handle(struct parse_events_error *err, int idx, 2375 char *str, char *help) 2376 { 2377 struct parse_events_error_entry *entry; 2378 2379 if (WARN(!str || !err, "WARNING: failed to provide error string or struct\n")) 2380 goto out_free; 2381 2382 entry = zalloc(sizeof(*entry)); 2383 if (!entry) { 2384 pr_err("Failed to allocate memory for event parsing error: %s (%s)\n", 2385 str, help ?: "<no help>"); 2386 goto out_free; 2387 } 2388 entry->idx = idx; 2389 entry->str = str; 2390 entry->help = help; 2391 list_add(&entry->list, &err->list); 2392 return; 2393 out_free: 2394 free(str); 2395 free(help); 2396 } 2397 2398 #define MAX_WIDTH 1000 2399 static int get_term_width(void) 2400 { 2401 struct winsize ws; 2402 2403 get_term_dimensions(&ws); 2404 return ws.ws_col > MAX_WIDTH ? MAX_WIDTH : ws.ws_col; 2405 } 2406 2407 static void __parse_events_error__print(int err_idx, const char *err_str, 2408 const char *err_help, const char *event) 2409 { 2410 const char *str = "invalid or unsupported event: "; 2411 char _buf[MAX_WIDTH]; 2412 char *buf = (char *) event; 2413 int idx = 0; 2414 if (err_str) { 2415 /* -2 for extra '' in the final fprintf */ 2416 int width = get_term_width() - 2; 2417 int len_event = strlen(event); 2418 int len_str, max_len, cut = 0; 2419 2420 /* 2421 * Maximum error index indent, we will cut 2422 * the event string if it's bigger. 2423 */ 2424 int max_err_idx = 13; 2425 2426 /* 2427 * Let's be specific with the message when 2428 * we have the precise error. 2429 */ 2430 str = "event syntax error: "; 2431 len_str = strlen(str); 2432 max_len = width - len_str; 2433 2434 buf = _buf; 2435 2436 /* We're cutting from the beginning. */ 2437 if (err_idx > max_err_idx) 2438 cut = err_idx - max_err_idx; 2439 2440 strncpy(buf, event + cut, max_len); 2441 2442 /* Mark cut parts with '..' on both sides. */ 2443 if (cut) 2444 buf[0] = buf[1] = '.'; 2445 2446 if ((len_event - cut) > max_len) { 2447 buf[max_len - 1] = buf[max_len - 2] = '.'; 2448 buf[max_len] = 0; 2449 } 2450 2451 idx = len_str + err_idx - cut; 2452 } 2453 2454 fprintf(stderr, "%s'%s'\n", str, buf); 2455 if (idx) { 2456 fprintf(stderr, "%*s\\___ %s\n", idx + 1, "", err_str); 2457 if (err_help) 2458 fprintf(stderr, "\n%s\n", err_help); 2459 } 2460 } 2461 2462 void parse_events_error__print(const struct parse_events_error *err, 2463 const char *event) 2464 { 2465 struct parse_events_error_entry *pos; 2466 bool first = true; 2467 2468 list_for_each_entry(pos, &err->list, list) { 2469 if (!first) 2470 fputs("\n", stderr); 2471 __parse_events_error__print(pos->idx, pos->str, pos->help, event); 2472 first = false; 2473 } 2474 } 2475 2476 /* 2477 * In the list of errors err, do any of the error strings (str) contain the 2478 * given needle string? 2479 */ 2480 bool parse_events_error__contains(const struct parse_events_error *err, 2481 const char *needle) 2482 { 2483 struct parse_events_error_entry *pos; 2484 2485 list_for_each_entry(pos, &err->list, list) { 2486 if (strstr(pos->str, needle) != NULL) 2487 return true; 2488 } 2489 return false; 2490 } 2491 2492 #undef MAX_WIDTH 2493 2494 int parse_events_option(const struct option *opt, const char *str, 2495 int unset __maybe_unused) 2496 { 2497 struct parse_events_option_args *args = opt->value; 2498 struct parse_events_error err; 2499 int ret; 2500 2501 parse_events_error__init(&err); 2502 ret = __parse_events(*args->evlistp, str, args->pmu_filter, &err, 2503 /*fake_pmu=*/false, /*warn_if_reordered=*/true, 2504 /*fake_tp=*/false); 2505 2506 if (ret) { 2507 parse_events_error__print(&err, str); 2508 fprintf(stderr, "Run 'perf list' for a list of valid events\n"); 2509 } 2510 parse_events_error__exit(&err); 2511 2512 return ret; 2513 } 2514 2515 int parse_events_option_new_evlist(const struct option *opt, const char *str, int unset) 2516 { 2517 struct parse_events_option_args *args = opt->value; 2518 int ret; 2519 2520 if (*args->evlistp == NULL) { 2521 *args->evlistp = evlist__new(); 2522 2523 if (*args->evlistp == NULL) { 2524 fprintf(stderr, "Not enough memory to create evlist\n"); 2525 return -1; 2526 } 2527 } 2528 ret = parse_events_option(opt, str, unset); 2529 if (ret) { 2530 evlist__delete(*args->evlistp); 2531 *args->evlistp = NULL; 2532 } 2533 2534 return ret; 2535 } 2536 2537 static int 2538 foreach_evsel_in_last_glob(struct evlist *evlist, 2539 int (*func)(struct evsel *evsel, 2540 const void *arg), 2541 const void *arg) 2542 { 2543 struct evsel *last = NULL; 2544 int err; 2545 2546 /* 2547 * Don't return when list_empty, give func a chance to report 2548 * error when it found last == NULL. 2549 * 2550 * So no need to WARN here, let *func do this. 2551 */ 2552 if (evlist->core.nr_entries > 0) 2553 last = evlist__last(evlist); 2554 2555 do { 2556 err = (*func)(last, arg); 2557 if (err) 2558 return -1; 2559 if (!last) 2560 return 0; 2561 2562 if (last->core.node.prev == &evlist->core.entries) 2563 return 0; 2564 last = list_entry(last->core.node.prev, struct evsel, core.node); 2565 } while (!last->cmdline_group_boundary); 2566 2567 return 0; 2568 } 2569 2570 /* Will a tracepoint filter work for str or should a BPF filter be used? */ 2571 static bool is_possible_tp_filter(const char *str) 2572 { 2573 return strstr(str, "uid") == NULL; 2574 } 2575 2576 static int set_filter(struct evsel *evsel, const void *arg) 2577 { 2578 const char *str = arg; 2579 int nr_addr_filters = 0; 2580 struct perf_pmu *pmu; 2581 2582 if (evsel == NULL) { 2583 fprintf(stderr, 2584 "--filter option should follow a -e tracepoint or HW tracer option\n"); 2585 return -1; 2586 } 2587 2588 if (evsel->core.attr.type == PERF_TYPE_TRACEPOINT && is_possible_tp_filter(str)) { 2589 if (evsel__append_tp_filter(evsel, str) < 0) { 2590 fprintf(stderr, 2591 "not enough memory to hold filter string\n"); 2592 return -1; 2593 } 2594 2595 return 0; 2596 } 2597 2598 pmu = evsel__find_pmu(evsel); 2599 if (pmu) { 2600 perf_pmu__scan_file(pmu, "nr_addr_filters", 2601 "%d", &nr_addr_filters); 2602 } 2603 if (!nr_addr_filters) 2604 return perf_bpf_filter__parse(&evsel->bpf_filters, str); 2605 2606 if (evsel__append_addr_filter(evsel, str) < 0) { 2607 fprintf(stderr, 2608 "not enough memory to hold filter string\n"); 2609 return -1; 2610 } 2611 2612 return 0; 2613 } 2614 2615 int parse_filter(const struct option *opt, const char *str, 2616 int unset __maybe_unused) 2617 { 2618 struct evlist *evlist = *(struct evlist **)opt->value; 2619 2620 return foreach_evsel_in_last_glob(evlist, set_filter, 2621 (const void *)str); 2622 } 2623 2624 int parse_uid_filter(struct evlist *evlist, uid_t uid) 2625 { 2626 struct option opt = { 2627 .value = &evlist, 2628 }; 2629 char buf[128]; 2630 int ret; 2631 2632 snprintf(buf, sizeof(buf), "uid == %d", uid); 2633 ret = parse_filter(&opt, buf, /*unset=*/0); 2634 if (ret) { 2635 if (use_browser >= 1) { 2636 /* 2637 * Use ui__warning so a pop up appears above the 2638 * underlying BPF error message. 2639 */ 2640 ui__warning("Failed to add UID filtering that uses BPF filtering.\n"); 2641 } else { 2642 fprintf(stderr, "Failed to add UID filtering that uses BPF filtering.\n"); 2643 } 2644 } 2645 return ret; 2646 } 2647 2648 static int add_exclude_perf_filter(struct evsel *evsel, 2649 const void *arg __maybe_unused) 2650 { 2651 char new_filter[64]; 2652 2653 if (evsel == NULL || evsel->core.attr.type != PERF_TYPE_TRACEPOINT) { 2654 fprintf(stderr, 2655 "--exclude-perf option should follow a -e tracepoint option\n"); 2656 return -1; 2657 } 2658 2659 snprintf(new_filter, sizeof(new_filter), "common_pid != %d", getpid()); 2660 2661 if (evsel__append_tp_filter(evsel, new_filter) < 0) { 2662 fprintf(stderr, 2663 "not enough memory to hold filter string\n"); 2664 return -1; 2665 } 2666 2667 return 0; 2668 } 2669 2670 int exclude_perf(const struct option *opt, 2671 const char *arg __maybe_unused, 2672 int unset __maybe_unused) 2673 { 2674 struct evlist *evlist = *(struct evlist **)opt->value; 2675 2676 return foreach_evsel_in_last_glob(evlist, add_exclude_perf_filter, 2677 NULL); 2678 } 2679 2680 int parse_events__is_hardcoded_term(struct parse_events_term *term) 2681 { 2682 return term->type_term != PARSE_EVENTS__TERM_TYPE_USER; 2683 } 2684 2685 static int new_term(struct parse_events_term **_term, 2686 struct parse_events_term *temp, 2687 char *str, u64 num) 2688 { 2689 struct parse_events_term *term; 2690 2691 term = malloc(sizeof(*term)); 2692 if (!term) 2693 return -ENOMEM; 2694 2695 *term = *temp; 2696 INIT_LIST_HEAD(&term->list); 2697 term->weak = false; 2698 2699 switch (term->type_val) { 2700 case PARSE_EVENTS__TERM_TYPE_NUM: 2701 term->val.num = num; 2702 break; 2703 case PARSE_EVENTS__TERM_TYPE_STR: 2704 term->val.str = str; 2705 break; 2706 default: 2707 free(term); 2708 return -EINVAL; 2709 } 2710 2711 *_term = term; 2712 return 0; 2713 } 2714 2715 int parse_events_term__num(struct parse_events_term **term, 2716 enum parse_events__term_type type_term, 2717 const char *config, u64 num, 2718 bool no_value, 2719 void *loc_term_, void *loc_val_) 2720 { 2721 YYLTYPE *loc_term = loc_term_; 2722 YYLTYPE *loc_val = loc_val_; 2723 2724 struct parse_events_term temp = { 2725 .type_val = PARSE_EVENTS__TERM_TYPE_NUM, 2726 .type_term = type_term, 2727 .config = config ? : strdup(parse_events__term_type_str(type_term)), 2728 .no_value = no_value, 2729 .err_term = loc_term ? loc_term->first_column : 0, 2730 .err_val = loc_val ? loc_val->first_column : 0, 2731 }; 2732 2733 return new_term(term, &temp, /*str=*/NULL, num); 2734 } 2735 2736 int parse_events_term__str(struct parse_events_term **term, 2737 enum parse_events__term_type type_term, 2738 char *config, char *str, 2739 void *loc_term_, void *loc_val_) 2740 { 2741 YYLTYPE *loc_term = loc_term_; 2742 YYLTYPE *loc_val = loc_val_; 2743 2744 struct parse_events_term temp = { 2745 .type_val = PARSE_EVENTS__TERM_TYPE_STR, 2746 .type_term = type_term, 2747 .config = config, 2748 .err_term = loc_term ? loc_term->first_column : 0, 2749 .err_val = loc_val ? loc_val->first_column : 0, 2750 }; 2751 2752 return new_term(term, &temp, str, /*num=*/0); 2753 } 2754 2755 int parse_events_term__term(struct parse_events_term **term, 2756 enum parse_events__term_type term_lhs, 2757 enum parse_events__term_type term_rhs, 2758 void *loc_term, void *loc_val) 2759 { 2760 return parse_events_term__str(term, term_lhs, NULL, 2761 strdup(parse_events__term_type_str(term_rhs)), 2762 loc_term, loc_val); 2763 } 2764 2765 int parse_events_term__clone(struct parse_events_term **new, 2766 const struct parse_events_term *term) 2767 { 2768 char *str; 2769 struct parse_events_term temp = *term; 2770 2771 temp.used = false; 2772 if (term->config) { 2773 temp.config = strdup(term->config); 2774 if (!temp.config) 2775 return -ENOMEM; 2776 } 2777 if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) 2778 return new_term(new, &temp, /*str=*/NULL, term->val.num); 2779 2780 str = strdup(term->val.str); 2781 if (!str) { 2782 zfree(&temp.config); 2783 return -ENOMEM; 2784 } 2785 return new_term(new, &temp, str, /*num=*/0); 2786 } 2787 2788 void parse_events_term__delete(struct parse_events_term *term) 2789 { 2790 if (term->type_val != PARSE_EVENTS__TERM_TYPE_NUM) 2791 zfree(&term->val.str); 2792 2793 zfree(&term->config); 2794 free(term); 2795 } 2796 2797 static int parse_events_terms__copy(const struct parse_events_terms *src, 2798 struct parse_events_terms *dest) 2799 { 2800 struct parse_events_term *term; 2801 2802 list_for_each_entry (term, &src->terms, list) { 2803 struct parse_events_term *n; 2804 int ret; 2805 2806 ret = parse_events_term__clone(&n, term); 2807 if (ret) 2808 return ret; 2809 2810 list_add_tail(&n->list, &dest->terms); 2811 } 2812 return 0; 2813 } 2814 2815 void parse_events_terms__init(struct parse_events_terms *terms) 2816 { 2817 INIT_LIST_HEAD(&terms->terms); 2818 } 2819 2820 void parse_events_terms__exit(struct parse_events_terms *terms) 2821 { 2822 struct parse_events_term *term, *h; 2823 2824 list_for_each_entry_safe(term, h, &terms->terms, list) { 2825 list_del_init(&term->list); 2826 parse_events_term__delete(term); 2827 } 2828 } 2829 2830 void parse_events_terms__delete(struct parse_events_terms *terms) 2831 { 2832 if (!terms) 2833 return; 2834 parse_events_terms__exit(terms); 2835 free(terms); 2836 } 2837 2838 int parse_events_terms__to_strbuf(const struct parse_events_terms *terms, struct strbuf *sb) 2839 { 2840 struct parse_events_term *term; 2841 bool first = true; 2842 2843 if (!terms) 2844 return 0; 2845 2846 list_for_each_entry(term, &terms->terms, list) { 2847 int ret; 2848 2849 if (!first) { 2850 ret = strbuf_addch(sb, ','); 2851 if (ret < 0) 2852 return ret; 2853 } 2854 first = false; 2855 2856 if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) 2857 if (term->no_value) { 2858 assert(term->val.num == 1); 2859 ret = strbuf_addf(sb, "%s", term->config); 2860 } else 2861 ret = strbuf_addf(sb, "%s=%#"PRIx64, term->config, term->val.num); 2862 else if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR) { 2863 if (term->config) { 2864 ret = strbuf_addf(sb, "%s=", term->config); 2865 if (ret < 0) 2866 return ret; 2867 } else if ((unsigned int)term->type_term < __PARSE_EVENTS__TERM_TYPE_NR) { 2868 ret = strbuf_addf(sb, "%s=", 2869 parse_events__term_type_str(term->type_term)); 2870 if (ret < 0) 2871 return ret; 2872 } 2873 assert(!term->no_value); 2874 ret = strbuf_addf(sb, "%s", term->val.str); 2875 } 2876 if (ret < 0) 2877 return ret; 2878 } 2879 return 0; 2880 } 2881 2882 static void config_terms_list(char *buf, size_t buf_sz) 2883 { 2884 int i; 2885 bool first = true; 2886 2887 buf[0] = '\0'; 2888 for (i = 0; i < __PARSE_EVENTS__TERM_TYPE_NR; i++) { 2889 const char *name = parse_events__term_type_str(i); 2890 2891 if (!config_term_avail(i, NULL)) 2892 continue; 2893 if (!name) 2894 continue; 2895 if (name[0] == '<') 2896 continue; 2897 2898 if (strlen(buf) + strlen(name) + 2 >= buf_sz) 2899 return; 2900 2901 if (!first) 2902 strcat(buf, ","); 2903 else 2904 first = false; 2905 strcat(buf, name); 2906 } 2907 } 2908 2909 /* 2910 * Return string contains valid config terms of an event. 2911 * @additional_terms: For terms such as PMU sysfs terms. 2912 */ 2913 char *parse_events_formats_error_string(char *additional_terms) 2914 { 2915 char *str; 2916 /* "no-overwrite" is the longest name */ 2917 char static_terms[__PARSE_EVENTS__TERM_TYPE_NR * 2918 (sizeof("no-overwrite") - 1)]; 2919 2920 config_terms_list(static_terms, sizeof(static_terms)); 2921 /* valid terms */ 2922 if (additional_terms) { 2923 if (asprintf(&str, "valid terms: %s,%s", 2924 additional_terms, static_terms) < 0) 2925 goto fail; 2926 } else { 2927 if (asprintf(&str, "valid terms: %s", static_terms) < 0) 2928 goto fail; 2929 } 2930 return str; 2931 2932 fail: 2933 return NULL; 2934 } 2935