1 #include "../../../include/linux/hw_breakpoint.h" 2 #include "util.h" 3 #include "../perf.h" 4 #include "evlist.h" 5 #include "evsel.h" 6 #include "parse-options.h" 7 #include "parse-events.h" 8 #include "exec_cmd.h" 9 #include "string.h" 10 #include "symbol.h" 11 #include "cache.h" 12 #include "header.h" 13 #include "debugfs.h" 14 #include "parse-events-bison.h" 15 #define YY_EXTRA_TYPE int 16 #include "parse-events-flex.h" 17 #include "pmu.h" 18 19 #define MAX_NAME_LEN 100 20 21 struct event_symbol { 22 const char *symbol; 23 const char *alias; 24 }; 25 26 #ifdef PARSER_DEBUG 27 extern int parse_events_debug; 28 #endif 29 int parse_events_parse(void *data, void *scanner); 30 31 static struct event_symbol event_symbols_hw[PERF_COUNT_HW_MAX] = { 32 [PERF_COUNT_HW_CPU_CYCLES] = { 33 .symbol = "cpu-cycles", 34 .alias = "cycles", 35 }, 36 [PERF_COUNT_HW_INSTRUCTIONS] = { 37 .symbol = "instructions", 38 .alias = "", 39 }, 40 [PERF_COUNT_HW_CACHE_REFERENCES] = { 41 .symbol = "cache-references", 42 .alias = "", 43 }, 44 [PERF_COUNT_HW_CACHE_MISSES] = { 45 .symbol = "cache-misses", 46 .alias = "", 47 }, 48 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = { 49 .symbol = "branch-instructions", 50 .alias = "branches", 51 }, 52 [PERF_COUNT_HW_BRANCH_MISSES] = { 53 .symbol = "branch-misses", 54 .alias = "", 55 }, 56 [PERF_COUNT_HW_BUS_CYCLES] = { 57 .symbol = "bus-cycles", 58 .alias = "", 59 }, 60 [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = { 61 .symbol = "stalled-cycles-frontend", 62 .alias = "idle-cycles-frontend", 63 }, 64 [PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = { 65 .symbol = "stalled-cycles-backend", 66 .alias = "idle-cycles-backend", 67 }, 68 [PERF_COUNT_HW_REF_CPU_CYCLES] = { 69 .symbol = "ref-cycles", 70 .alias = "", 71 }, 72 }; 73 74 static struct event_symbol event_symbols_sw[PERF_COUNT_SW_MAX] = { 75 [PERF_COUNT_SW_CPU_CLOCK] = { 76 .symbol = "cpu-clock", 77 .alias = "", 78 }, 79 [PERF_COUNT_SW_TASK_CLOCK] = { 80 .symbol = "task-clock", 81 .alias = "", 82 }, 83 [PERF_COUNT_SW_PAGE_FAULTS] = { 84 .symbol = "page-faults", 85 .alias = "faults", 86 }, 87 [PERF_COUNT_SW_CONTEXT_SWITCHES] = { 88 .symbol = "context-switches", 89 .alias = "cs", 90 }, 91 [PERF_COUNT_SW_CPU_MIGRATIONS] = { 92 .symbol = "cpu-migrations", 93 .alias = "migrations", 94 }, 95 [PERF_COUNT_SW_PAGE_FAULTS_MIN] = { 96 .symbol = "minor-faults", 97 .alias = "", 98 }, 99 [PERF_COUNT_SW_PAGE_FAULTS_MAJ] = { 100 .symbol = "major-faults", 101 .alias = "", 102 }, 103 [PERF_COUNT_SW_ALIGNMENT_FAULTS] = { 104 .symbol = "alignment-faults", 105 .alias = "", 106 }, 107 [PERF_COUNT_SW_EMULATION_FAULTS] = { 108 .symbol = "emulation-faults", 109 .alias = "", 110 }, 111 }; 112 113 #define __PERF_EVENT_FIELD(config, name) \ 114 ((config & PERF_EVENT_##name##_MASK) >> PERF_EVENT_##name##_SHIFT) 115 116 #define PERF_EVENT_RAW(config) __PERF_EVENT_FIELD(config, RAW) 117 #define PERF_EVENT_CONFIG(config) __PERF_EVENT_FIELD(config, CONFIG) 118 #define PERF_EVENT_TYPE(config) __PERF_EVENT_FIELD(config, TYPE) 119 #define PERF_EVENT_ID(config) __PERF_EVENT_FIELD(config, EVENT) 120 121 #define for_each_subsystem(sys_dir, sys_dirent, sys_next) \ 122 while (!readdir_r(sys_dir, &sys_dirent, &sys_next) && sys_next) \ 123 if (sys_dirent.d_type == DT_DIR && \ 124 (strcmp(sys_dirent.d_name, ".")) && \ 125 (strcmp(sys_dirent.d_name, ".."))) 126 127 static int tp_event_has_id(struct dirent *sys_dir, struct dirent *evt_dir) 128 { 129 char evt_path[MAXPATHLEN]; 130 int fd; 131 132 snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", tracing_events_path, 133 sys_dir->d_name, evt_dir->d_name); 134 fd = open(evt_path, O_RDONLY); 135 if (fd < 0) 136 return -EINVAL; 137 close(fd); 138 139 return 0; 140 } 141 142 #define for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) \ 143 while (!readdir_r(evt_dir, &evt_dirent, &evt_next) && evt_next) \ 144 if (evt_dirent.d_type == DT_DIR && \ 145 (strcmp(evt_dirent.d_name, ".")) && \ 146 (strcmp(evt_dirent.d_name, "..")) && \ 147 (!tp_event_has_id(&sys_dirent, &evt_dirent))) 148 149 #define MAX_EVENT_LENGTH 512 150 151 152 struct tracepoint_path *tracepoint_id_to_path(u64 config) 153 { 154 struct tracepoint_path *path = NULL; 155 DIR *sys_dir, *evt_dir; 156 struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent; 157 char id_buf[24]; 158 int fd; 159 u64 id; 160 char evt_path[MAXPATHLEN]; 161 char dir_path[MAXPATHLEN]; 162 163 if (debugfs_valid_mountpoint(tracing_events_path)) 164 return NULL; 165 166 sys_dir = opendir(tracing_events_path); 167 if (!sys_dir) 168 return NULL; 169 170 for_each_subsystem(sys_dir, sys_dirent, sys_next) { 171 172 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path, 173 sys_dirent.d_name); 174 evt_dir = opendir(dir_path); 175 if (!evt_dir) 176 continue; 177 178 for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) { 179 180 snprintf(evt_path, MAXPATHLEN, "%s/%s/id", dir_path, 181 evt_dirent.d_name); 182 fd = open(evt_path, O_RDONLY); 183 if (fd < 0) 184 continue; 185 if (read(fd, id_buf, sizeof(id_buf)) < 0) { 186 close(fd); 187 continue; 188 } 189 close(fd); 190 id = atoll(id_buf); 191 if (id == config) { 192 closedir(evt_dir); 193 closedir(sys_dir); 194 path = zalloc(sizeof(*path)); 195 path->system = malloc(MAX_EVENT_LENGTH); 196 if (!path->system) { 197 free(path); 198 return NULL; 199 } 200 path->name = malloc(MAX_EVENT_LENGTH); 201 if (!path->name) { 202 free(path->system); 203 free(path); 204 return NULL; 205 } 206 strncpy(path->system, sys_dirent.d_name, 207 MAX_EVENT_LENGTH); 208 strncpy(path->name, evt_dirent.d_name, 209 MAX_EVENT_LENGTH); 210 return path; 211 } 212 } 213 closedir(evt_dir); 214 } 215 216 closedir(sys_dir); 217 return NULL; 218 } 219 220 const char *event_type(int type) 221 { 222 switch (type) { 223 case PERF_TYPE_HARDWARE: 224 return "hardware"; 225 226 case PERF_TYPE_SOFTWARE: 227 return "software"; 228 229 case PERF_TYPE_TRACEPOINT: 230 return "tracepoint"; 231 232 case PERF_TYPE_HW_CACHE: 233 return "hardware-cache"; 234 235 default: 236 break; 237 } 238 239 return "unknown"; 240 } 241 242 static int add_event(struct list_head **_list, int *idx, 243 struct perf_event_attr *attr, char *name) 244 { 245 struct perf_evsel *evsel; 246 struct list_head *list = *_list; 247 248 if (!list) { 249 list = malloc(sizeof(*list)); 250 if (!list) 251 return -ENOMEM; 252 INIT_LIST_HEAD(list); 253 } 254 255 event_attr_init(attr); 256 257 evsel = perf_evsel__new(attr, (*idx)++); 258 if (!evsel) { 259 free(list); 260 return -ENOMEM; 261 } 262 263 if (name) 264 evsel->name = strdup(name); 265 list_add_tail(&evsel->node, list); 266 *_list = list; 267 return 0; 268 } 269 270 static int parse_aliases(char *str, const char *names[][PERF_EVSEL__MAX_ALIASES], int size) 271 { 272 int i, j; 273 int n, longest = -1; 274 275 for (i = 0; i < size; i++) { 276 for (j = 0; j < PERF_EVSEL__MAX_ALIASES && names[i][j]; j++) { 277 n = strlen(names[i][j]); 278 if (n > longest && !strncasecmp(str, names[i][j], n)) 279 longest = n; 280 } 281 if (longest > 0) 282 return i; 283 } 284 285 return -1; 286 } 287 288 int parse_events_add_cache(struct list_head **list, int *idx, 289 char *type, char *op_result1, char *op_result2) 290 { 291 struct perf_event_attr attr; 292 char name[MAX_NAME_LEN]; 293 int cache_type = -1, cache_op = -1, cache_result = -1; 294 char *op_result[2] = { op_result1, op_result2 }; 295 int i, n; 296 297 /* 298 * No fallback - if we cannot get a clear cache type 299 * then bail out: 300 */ 301 cache_type = parse_aliases(type, perf_evsel__hw_cache, 302 PERF_COUNT_HW_CACHE_MAX); 303 if (cache_type == -1) 304 return -EINVAL; 305 306 n = snprintf(name, MAX_NAME_LEN, "%s", type); 307 308 for (i = 0; (i < 2) && (op_result[i]); i++) { 309 char *str = op_result[i]; 310 311 snprintf(name + n, MAX_NAME_LEN - n, "-%s\n", str); 312 313 if (cache_op == -1) { 314 cache_op = parse_aliases(str, perf_evsel__hw_cache_op, 315 PERF_COUNT_HW_CACHE_OP_MAX); 316 if (cache_op >= 0) { 317 if (!perf_evsel__is_cache_op_valid(cache_type, cache_op)) 318 return -EINVAL; 319 continue; 320 } 321 } 322 323 if (cache_result == -1) { 324 cache_result = parse_aliases(str, perf_evsel__hw_cache_result, 325 PERF_COUNT_HW_CACHE_RESULT_MAX); 326 if (cache_result >= 0) 327 continue; 328 } 329 } 330 331 /* 332 * Fall back to reads: 333 */ 334 if (cache_op == -1) 335 cache_op = PERF_COUNT_HW_CACHE_OP_READ; 336 337 /* 338 * Fall back to accesses: 339 */ 340 if (cache_result == -1) 341 cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS; 342 343 memset(&attr, 0, sizeof(attr)); 344 attr.config = cache_type | (cache_op << 8) | (cache_result << 16); 345 attr.type = PERF_TYPE_HW_CACHE; 346 return add_event(list, idx, &attr, name); 347 } 348 349 static int add_tracepoint(struct list_head **list, int *idx, 350 char *sys_name, char *evt_name) 351 { 352 struct perf_event_attr attr; 353 char name[MAX_NAME_LEN]; 354 char evt_path[MAXPATHLEN]; 355 char id_buf[4]; 356 u64 id; 357 int fd; 358 359 snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", tracing_events_path, 360 sys_name, evt_name); 361 362 fd = open(evt_path, O_RDONLY); 363 if (fd < 0) 364 return -1; 365 366 if (read(fd, id_buf, sizeof(id_buf)) < 0) { 367 close(fd); 368 return -1; 369 } 370 371 close(fd); 372 id = atoll(id_buf); 373 374 memset(&attr, 0, sizeof(attr)); 375 attr.config = id; 376 attr.type = PERF_TYPE_TRACEPOINT; 377 attr.sample_type |= PERF_SAMPLE_RAW; 378 attr.sample_type |= PERF_SAMPLE_TIME; 379 attr.sample_type |= PERF_SAMPLE_CPU; 380 attr.sample_period = 1; 381 382 snprintf(name, MAX_NAME_LEN, "%s:%s", sys_name, evt_name); 383 return add_event(list, idx, &attr, name); 384 } 385 386 static int add_tracepoint_multi(struct list_head **list, int *idx, 387 char *sys_name, char *evt_name) 388 { 389 char evt_path[MAXPATHLEN]; 390 struct dirent *evt_ent; 391 DIR *evt_dir; 392 int ret = 0; 393 394 snprintf(evt_path, MAXPATHLEN, "%s/%s", tracing_events_path, sys_name); 395 evt_dir = opendir(evt_path); 396 if (!evt_dir) { 397 perror("Can't open event dir"); 398 return -1; 399 } 400 401 while (!ret && (evt_ent = readdir(evt_dir))) { 402 if (!strcmp(evt_ent->d_name, ".") 403 || !strcmp(evt_ent->d_name, "..") 404 || !strcmp(evt_ent->d_name, "enable") 405 || !strcmp(evt_ent->d_name, "filter")) 406 continue; 407 408 if (!strglobmatch(evt_ent->d_name, evt_name)) 409 continue; 410 411 ret = add_tracepoint(list, idx, sys_name, evt_ent->d_name); 412 } 413 414 return ret; 415 } 416 417 int parse_events_add_tracepoint(struct list_head **list, int *idx, 418 char *sys, char *event) 419 { 420 int ret; 421 422 ret = debugfs_valid_mountpoint(tracing_events_path); 423 if (ret) 424 return ret; 425 426 return strpbrk(event, "*?") ? 427 add_tracepoint_multi(list, idx, sys, event) : 428 add_tracepoint(list, idx, sys, event); 429 } 430 431 static int 432 parse_breakpoint_type(const char *type, struct perf_event_attr *attr) 433 { 434 int i; 435 436 for (i = 0; i < 3; i++) { 437 if (!type || !type[i]) 438 break; 439 440 #define CHECK_SET_TYPE(bit) \ 441 do { \ 442 if (attr->bp_type & bit) \ 443 return -EINVAL; \ 444 else \ 445 attr->bp_type |= bit; \ 446 } while (0) 447 448 switch (type[i]) { 449 case 'r': 450 CHECK_SET_TYPE(HW_BREAKPOINT_R); 451 break; 452 case 'w': 453 CHECK_SET_TYPE(HW_BREAKPOINT_W); 454 break; 455 case 'x': 456 CHECK_SET_TYPE(HW_BREAKPOINT_X); 457 break; 458 default: 459 return -EINVAL; 460 } 461 } 462 463 #undef CHECK_SET_TYPE 464 465 if (!attr->bp_type) /* Default */ 466 attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W; 467 468 return 0; 469 } 470 471 int parse_events_add_breakpoint(struct list_head **list, int *idx, 472 void *ptr, char *type) 473 { 474 struct perf_event_attr attr; 475 476 memset(&attr, 0, sizeof(attr)); 477 attr.bp_addr = (unsigned long) ptr; 478 479 if (parse_breakpoint_type(type, &attr)) 480 return -EINVAL; 481 482 /* 483 * We should find a nice way to override the access length 484 * Provide some defaults for now 485 */ 486 if (attr.bp_type == HW_BREAKPOINT_X) 487 attr.bp_len = sizeof(long); 488 else 489 attr.bp_len = HW_BREAKPOINT_LEN_4; 490 491 attr.type = PERF_TYPE_BREAKPOINT; 492 493 return add_event(list, idx, &attr, NULL); 494 } 495 496 static int config_term(struct perf_event_attr *attr, 497 struct parse_events__term *term) 498 { 499 #define CHECK_TYPE_VAL(type) \ 500 do { \ 501 if (PARSE_EVENTS__TERM_TYPE_ ## type != term->type_val) \ 502 return -EINVAL; \ 503 } while (0) 504 505 switch (term->type_term) { 506 case PARSE_EVENTS__TERM_TYPE_CONFIG: 507 CHECK_TYPE_VAL(NUM); 508 attr->config = term->val.num; 509 break; 510 case PARSE_EVENTS__TERM_TYPE_CONFIG1: 511 CHECK_TYPE_VAL(NUM); 512 attr->config1 = term->val.num; 513 break; 514 case PARSE_EVENTS__TERM_TYPE_CONFIG2: 515 CHECK_TYPE_VAL(NUM); 516 attr->config2 = term->val.num; 517 break; 518 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD: 519 CHECK_TYPE_VAL(NUM); 520 attr->sample_period = term->val.num; 521 break; 522 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE: 523 /* 524 * TODO uncomment when the field is available 525 * attr->branch_sample_type = term->val.num; 526 */ 527 break; 528 case PARSE_EVENTS__TERM_TYPE_NAME: 529 CHECK_TYPE_VAL(STR); 530 break; 531 default: 532 return -EINVAL; 533 } 534 535 return 0; 536 #undef CHECK_TYPE_VAL 537 } 538 539 static int config_attr(struct perf_event_attr *attr, 540 struct list_head *head, int fail) 541 { 542 struct parse_events__term *term; 543 544 list_for_each_entry(term, head, list) 545 if (config_term(attr, term) && fail) 546 return -EINVAL; 547 548 return 0; 549 } 550 551 int parse_events_add_numeric(struct list_head **list, int *idx, 552 unsigned long type, unsigned long config, 553 struct list_head *head_config) 554 { 555 struct perf_event_attr attr; 556 557 memset(&attr, 0, sizeof(attr)); 558 attr.type = type; 559 attr.config = config; 560 561 if (head_config && 562 config_attr(&attr, head_config, 1)) 563 return -EINVAL; 564 565 return add_event(list, idx, &attr, NULL); 566 } 567 568 static int parse_events__is_name_term(struct parse_events__term *term) 569 { 570 return term->type_term == PARSE_EVENTS__TERM_TYPE_NAME; 571 } 572 573 static char *pmu_event_name(struct list_head *head_terms) 574 { 575 struct parse_events__term *term; 576 577 list_for_each_entry(term, head_terms, list) 578 if (parse_events__is_name_term(term)) 579 return term->val.str; 580 581 return NULL; 582 } 583 584 int parse_events_add_pmu(struct list_head **list, int *idx, 585 char *name, struct list_head *head_config) 586 { 587 struct perf_event_attr attr; 588 struct perf_pmu *pmu; 589 590 pmu = perf_pmu__find(name); 591 if (!pmu) 592 return -EINVAL; 593 594 memset(&attr, 0, sizeof(attr)); 595 596 if (perf_pmu__check_alias(pmu, head_config)) 597 return -EINVAL; 598 599 /* 600 * Configure hardcoded terms first, no need to check 601 * return value when called with fail == 0 ;) 602 */ 603 config_attr(&attr, head_config, 0); 604 605 if (perf_pmu__config(pmu, &attr, head_config)) 606 return -EINVAL; 607 608 return add_event(list, idx, &attr, 609 pmu_event_name(head_config)); 610 } 611 612 void parse_events_update_lists(struct list_head *list_event, 613 struct list_head *list_all) 614 { 615 /* 616 * Called for single event definition. Update the 617 * 'all event' list, and reinit the 'signle event' 618 * list, for next event definition. 619 */ 620 list_splice_tail(list_event, list_all); 621 free(list_event); 622 } 623 624 int parse_events_modifier(struct list_head *list, char *str) 625 { 626 struct perf_evsel *evsel; 627 int exclude = 0, exclude_GH = 0; 628 int eu = 0, ek = 0, eh = 0, eH = 0, eG = 0, precise = 0; 629 630 if (str == NULL) 631 return 0; 632 633 while (*str) { 634 if (*str == 'u') { 635 if (!exclude) 636 exclude = eu = ek = eh = 1; 637 eu = 0; 638 } else if (*str == 'k') { 639 if (!exclude) 640 exclude = eu = ek = eh = 1; 641 ek = 0; 642 } else if (*str == 'h') { 643 if (!exclude) 644 exclude = eu = ek = eh = 1; 645 eh = 0; 646 } else if (*str == 'G') { 647 if (!exclude_GH) 648 exclude_GH = eG = eH = 1; 649 eG = 0; 650 } else if (*str == 'H') { 651 if (!exclude_GH) 652 exclude_GH = eG = eH = 1; 653 eH = 0; 654 } else if (*str == 'p') { 655 precise++; 656 } else 657 break; 658 659 ++str; 660 } 661 662 /* 663 * precise ip: 664 * 665 * 0 - SAMPLE_IP can have arbitrary skid 666 * 1 - SAMPLE_IP must have constant skid 667 * 2 - SAMPLE_IP requested to have 0 skid 668 * 3 - SAMPLE_IP must have 0 skid 669 * 670 * See also PERF_RECORD_MISC_EXACT_IP 671 */ 672 if (precise > 3) 673 return -EINVAL; 674 675 list_for_each_entry(evsel, list, node) { 676 evsel->attr.exclude_user = eu; 677 evsel->attr.exclude_kernel = ek; 678 evsel->attr.exclude_hv = eh; 679 evsel->attr.precise_ip = precise; 680 evsel->attr.exclude_host = eH; 681 evsel->attr.exclude_guest = eG; 682 } 683 684 return 0; 685 } 686 687 static int parse_events__scanner(const char *str, void *data, int start_token) 688 { 689 YY_BUFFER_STATE buffer; 690 void *scanner; 691 int ret; 692 693 ret = parse_events_lex_init_extra(start_token, &scanner); 694 if (ret) 695 return ret; 696 697 buffer = parse_events__scan_string(str, scanner); 698 699 #ifdef PARSER_DEBUG 700 parse_events_debug = 1; 701 #endif 702 ret = parse_events_parse(data, scanner); 703 704 parse_events__flush_buffer(buffer, scanner); 705 parse_events__delete_buffer(buffer, scanner); 706 parse_events_lex_destroy(scanner); 707 return ret; 708 } 709 710 /* 711 * parse event config string, return a list of event terms. 712 */ 713 int parse_events_terms(struct list_head *terms, const char *str) 714 { 715 struct parse_events_data__terms data = { 716 .terms = NULL, 717 }; 718 int ret; 719 720 ret = parse_events__scanner(str, &data, PE_START_TERMS); 721 if (!ret) { 722 list_splice(data.terms, terms); 723 free(data.terms); 724 return 0; 725 } 726 727 parse_events__free_terms(data.terms); 728 return ret; 729 } 730 731 int parse_events(struct perf_evlist *evlist, const char *str, int unset __used) 732 { 733 struct parse_events_data__events data = { 734 .list = LIST_HEAD_INIT(data.list), 735 .idx = evlist->nr_entries, 736 }; 737 int ret; 738 739 ret = parse_events__scanner(str, &data, PE_START_EVENTS); 740 if (!ret) { 741 int entries = data.idx - evlist->nr_entries; 742 perf_evlist__splice_list_tail(evlist, &data.list, entries); 743 return 0; 744 } 745 746 /* 747 * There are 2 users - builtin-record and builtin-test objects. 748 * Both call perf_evlist__delete in case of error, so we dont 749 * need to bother. 750 */ 751 fprintf(stderr, "invalid or unsupported event: '%s'\n", str); 752 fprintf(stderr, "Run 'perf list' for a list of valid events\n"); 753 return ret; 754 } 755 756 int parse_events_option(const struct option *opt, const char *str, 757 int unset __used) 758 { 759 struct perf_evlist *evlist = *(struct perf_evlist **)opt->value; 760 return parse_events(evlist, str, unset); 761 } 762 763 int parse_filter(const struct option *opt, const char *str, 764 int unset __used) 765 { 766 struct perf_evlist *evlist = *(struct perf_evlist **)opt->value; 767 struct perf_evsel *last = NULL; 768 769 if (evlist->nr_entries > 0) 770 last = list_entry(evlist->entries.prev, struct perf_evsel, node); 771 772 if (last == NULL || last->attr.type != PERF_TYPE_TRACEPOINT) { 773 fprintf(stderr, 774 "-F option should follow a -e tracepoint option\n"); 775 return -1; 776 } 777 778 last->filter = strdup(str); 779 if (last->filter == NULL) { 780 fprintf(stderr, "not enough memory to hold filter string\n"); 781 return -1; 782 } 783 784 return 0; 785 } 786 787 static const char * const event_type_descriptors[] = { 788 "Hardware event", 789 "Software event", 790 "Tracepoint event", 791 "Hardware cache event", 792 "Raw hardware event descriptor", 793 "Hardware breakpoint", 794 }; 795 796 /* 797 * Print the events from <debugfs_mount_point>/tracing/events 798 */ 799 800 void print_tracepoint_events(const char *subsys_glob, const char *event_glob) 801 { 802 DIR *sys_dir, *evt_dir; 803 struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent; 804 char evt_path[MAXPATHLEN]; 805 char dir_path[MAXPATHLEN]; 806 807 if (debugfs_valid_mountpoint(tracing_events_path)) 808 return; 809 810 sys_dir = opendir(tracing_events_path); 811 if (!sys_dir) 812 return; 813 814 for_each_subsystem(sys_dir, sys_dirent, sys_next) { 815 if (subsys_glob != NULL && 816 !strglobmatch(sys_dirent.d_name, subsys_glob)) 817 continue; 818 819 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path, 820 sys_dirent.d_name); 821 evt_dir = opendir(dir_path); 822 if (!evt_dir) 823 continue; 824 825 for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) { 826 if (event_glob != NULL && 827 !strglobmatch(evt_dirent.d_name, event_glob)) 828 continue; 829 830 snprintf(evt_path, MAXPATHLEN, "%s:%s", 831 sys_dirent.d_name, evt_dirent.d_name); 832 printf(" %-50s [%s]\n", evt_path, 833 event_type_descriptors[PERF_TYPE_TRACEPOINT]); 834 } 835 closedir(evt_dir); 836 } 837 closedir(sys_dir); 838 } 839 840 /* 841 * Check whether event is in <debugfs_mount_point>/tracing/events 842 */ 843 844 int is_valid_tracepoint(const char *event_string) 845 { 846 DIR *sys_dir, *evt_dir; 847 struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent; 848 char evt_path[MAXPATHLEN]; 849 char dir_path[MAXPATHLEN]; 850 851 if (debugfs_valid_mountpoint(tracing_events_path)) 852 return 0; 853 854 sys_dir = opendir(tracing_events_path); 855 if (!sys_dir) 856 return 0; 857 858 for_each_subsystem(sys_dir, sys_dirent, sys_next) { 859 860 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path, 861 sys_dirent.d_name); 862 evt_dir = opendir(dir_path); 863 if (!evt_dir) 864 continue; 865 866 for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) { 867 snprintf(evt_path, MAXPATHLEN, "%s:%s", 868 sys_dirent.d_name, evt_dirent.d_name); 869 if (!strcmp(evt_path, event_string)) { 870 closedir(evt_dir); 871 closedir(sys_dir); 872 return 1; 873 } 874 } 875 closedir(evt_dir); 876 } 877 closedir(sys_dir); 878 return 0; 879 } 880 881 static void __print_events_type(u8 type, struct event_symbol *syms, 882 unsigned max) 883 { 884 char name[64]; 885 unsigned i; 886 887 for (i = 0; i < max ; i++, syms++) { 888 if (strlen(syms->alias)) 889 snprintf(name, sizeof(name), "%s OR %s", 890 syms->symbol, syms->alias); 891 else 892 snprintf(name, sizeof(name), "%s", syms->symbol); 893 894 printf(" %-50s [%s]\n", name, 895 event_type_descriptors[type]); 896 } 897 } 898 899 void print_events_type(u8 type) 900 { 901 if (type == PERF_TYPE_SOFTWARE) 902 __print_events_type(type, event_symbols_sw, PERF_COUNT_SW_MAX); 903 else 904 __print_events_type(type, event_symbols_hw, PERF_COUNT_HW_MAX); 905 } 906 907 int print_hwcache_events(const char *event_glob) 908 { 909 unsigned int type, op, i, printed = 0; 910 char name[64]; 911 912 for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) { 913 for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) { 914 /* skip invalid cache type */ 915 if (!perf_evsel__is_cache_op_valid(type, op)) 916 continue; 917 918 for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) { 919 __perf_evsel__hw_cache_type_op_res_name(type, op, i, 920 name, sizeof(name)); 921 if (event_glob != NULL && !strglobmatch(name, event_glob)) 922 continue; 923 924 printf(" %-50s [%s]\n", name, 925 event_type_descriptors[PERF_TYPE_HW_CACHE]); 926 ++printed; 927 } 928 } 929 } 930 931 return printed; 932 } 933 934 static void print_symbol_events(const char *event_glob, unsigned type, 935 struct event_symbol *syms, unsigned max) 936 { 937 unsigned i, printed = 0; 938 char name[MAX_NAME_LEN]; 939 940 for (i = 0; i < max; i++, syms++) { 941 942 if (event_glob != NULL && 943 !(strglobmatch(syms->symbol, event_glob) || 944 (syms->alias && strglobmatch(syms->alias, event_glob)))) 945 continue; 946 947 if (strlen(syms->alias)) 948 snprintf(name, MAX_NAME_LEN, "%s OR %s", syms->symbol, syms->alias); 949 else 950 strncpy(name, syms->symbol, MAX_NAME_LEN); 951 952 printf(" %-50s [%s]\n", name, event_type_descriptors[type]); 953 954 printed++; 955 } 956 957 if (printed) 958 printf("\n"); 959 } 960 961 /* 962 * Print the help text for the event symbols: 963 */ 964 void print_events(const char *event_glob) 965 { 966 967 printf("\n"); 968 printf("List of pre-defined events (to be used in -e):\n"); 969 970 print_symbol_events(event_glob, PERF_TYPE_HARDWARE, 971 event_symbols_hw, PERF_COUNT_HW_MAX); 972 973 print_symbol_events(event_glob, PERF_TYPE_SOFTWARE, 974 event_symbols_sw, PERF_COUNT_SW_MAX); 975 976 print_hwcache_events(event_glob); 977 978 if (event_glob != NULL) 979 return; 980 981 printf("\n"); 982 printf(" %-50s [%s]\n", 983 "rNNN", 984 event_type_descriptors[PERF_TYPE_RAW]); 985 printf(" %-50s [%s]\n", 986 "cpu/t1=v1[,t2=v2,t3 ...]/modifier", 987 event_type_descriptors[PERF_TYPE_RAW]); 988 printf(" (see 'perf list --help' on how to encode it)\n"); 989 printf("\n"); 990 991 printf(" %-50s [%s]\n", 992 "mem:<addr>[:access]", 993 event_type_descriptors[PERF_TYPE_BREAKPOINT]); 994 printf("\n"); 995 996 print_tracepoint_events(NULL, NULL); 997 } 998 999 int parse_events__is_hardcoded_term(struct parse_events__term *term) 1000 { 1001 return term->type_term != PARSE_EVENTS__TERM_TYPE_USER; 1002 } 1003 1004 static int new_term(struct parse_events__term **_term, int type_val, 1005 int type_term, char *config, 1006 char *str, long num) 1007 { 1008 struct parse_events__term *term; 1009 1010 term = zalloc(sizeof(*term)); 1011 if (!term) 1012 return -ENOMEM; 1013 1014 INIT_LIST_HEAD(&term->list); 1015 term->type_val = type_val; 1016 term->type_term = type_term; 1017 term->config = config; 1018 1019 switch (type_val) { 1020 case PARSE_EVENTS__TERM_TYPE_NUM: 1021 term->val.num = num; 1022 break; 1023 case PARSE_EVENTS__TERM_TYPE_STR: 1024 term->val.str = str; 1025 break; 1026 default: 1027 return -EINVAL; 1028 } 1029 1030 *_term = term; 1031 return 0; 1032 } 1033 1034 int parse_events__term_num(struct parse_events__term **term, 1035 int type_term, char *config, long num) 1036 { 1037 return new_term(term, PARSE_EVENTS__TERM_TYPE_NUM, type_term, 1038 config, NULL, num); 1039 } 1040 1041 int parse_events__term_str(struct parse_events__term **term, 1042 int type_term, char *config, char *str) 1043 { 1044 return new_term(term, PARSE_EVENTS__TERM_TYPE_STR, type_term, 1045 config, str, 0); 1046 } 1047 1048 int parse_events__term_clone(struct parse_events__term **new, 1049 struct parse_events__term *term) 1050 { 1051 return new_term(new, term->type_val, term->type_term, term->config, 1052 term->val.str, term->val.num); 1053 } 1054 1055 void parse_events__free_terms(struct list_head *terms) 1056 { 1057 struct parse_events__term *term, *h; 1058 1059 list_for_each_entry_safe(term, h, terms, list) 1060 free(term); 1061 1062 free(terms); 1063 } 1064