1 // SPDX-License-Identifier: GPL-2.0 2 #include <linux/hw_breakpoint.h> 3 #include <linux/err.h> 4 #include <linux/zalloc.h> 5 #include <dirent.h> 6 #include <errno.h> 7 #include <sys/ioctl.h> 8 #include <sys/types.h> 9 #include <sys/stat.h> 10 #include <fcntl.h> 11 #include <sys/param.h> 12 #include "term.h" 13 #include "build-id.h" 14 #include "evlist.h" 15 #include "evsel.h" 16 #include <subcmd/pager.h> 17 #include <subcmd/parse-options.h> 18 #include "parse-events.h" 19 #include <subcmd/exec-cmd.h> 20 #include "string2.h" 21 #include "strlist.h" 22 #include "bpf-loader.h" 23 #include "debug.h" 24 #include <api/fs/tracing_path.h> 25 #include <perf/cpumap.h> 26 #include "parse-events-bison.h" 27 #define YY_EXTRA_TYPE void* 28 #include "parse-events-flex.h" 29 #include "pmu.h" 30 #include "thread_map.h" 31 #include "probe-file.h" 32 #include "asm/bug.h" 33 #include "util/parse-branch-options.h" 34 #include "metricgroup.h" 35 #include "util/evsel_config.h" 36 #include "util/event.h" 37 #include "util/pfm.h" 38 #include "util/parse-events-hybrid.h" 39 #include "util/pmu-hybrid.h" 40 #include "perf.h" 41 42 #define MAX_NAME_LEN 100 43 44 #ifdef PARSER_DEBUG 45 extern int parse_events_debug; 46 #endif 47 int parse_events_parse(void *parse_state, void *scanner); 48 static int get_config_terms(struct list_head *head_config, 49 struct list_head *head_terms __maybe_unused); 50 static int parse_events__with_hybrid_pmu(struct parse_events_state *parse_state, 51 const char *str, char *pmu_name, 52 struct list_head *list); 53 54 static struct perf_pmu_event_symbol *perf_pmu_events_list; 55 /* 56 * The variable indicates the number of supported pmu event symbols. 57 * 0 means not initialized and ready to init 58 * -1 means failed to init, don't try anymore 59 * >0 is the number of supported pmu event symbols 60 */ 61 static int perf_pmu_events_list_num; 62 63 struct event_symbol event_symbols_hw[PERF_COUNT_HW_MAX] = { 64 [PERF_COUNT_HW_CPU_CYCLES] = { 65 .symbol = "cpu-cycles", 66 .alias = "cycles", 67 }, 68 [PERF_COUNT_HW_INSTRUCTIONS] = { 69 .symbol = "instructions", 70 .alias = "", 71 }, 72 [PERF_COUNT_HW_CACHE_REFERENCES] = { 73 .symbol = "cache-references", 74 .alias = "", 75 }, 76 [PERF_COUNT_HW_CACHE_MISSES] = { 77 .symbol = "cache-misses", 78 .alias = "", 79 }, 80 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = { 81 .symbol = "branch-instructions", 82 .alias = "branches", 83 }, 84 [PERF_COUNT_HW_BRANCH_MISSES] = { 85 .symbol = "branch-misses", 86 .alias = "", 87 }, 88 [PERF_COUNT_HW_BUS_CYCLES] = { 89 .symbol = "bus-cycles", 90 .alias = "", 91 }, 92 [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = { 93 .symbol = "stalled-cycles-frontend", 94 .alias = "idle-cycles-frontend", 95 }, 96 [PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = { 97 .symbol = "stalled-cycles-backend", 98 .alias = "idle-cycles-backend", 99 }, 100 [PERF_COUNT_HW_REF_CPU_CYCLES] = { 101 .symbol = "ref-cycles", 102 .alias = "", 103 }, 104 }; 105 106 struct event_symbol event_symbols_sw[PERF_COUNT_SW_MAX] = { 107 [PERF_COUNT_SW_CPU_CLOCK] = { 108 .symbol = "cpu-clock", 109 .alias = "", 110 }, 111 [PERF_COUNT_SW_TASK_CLOCK] = { 112 .symbol = "task-clock", 113 .alias = "", 114 }, 115 [PERF_COUNT_SW_PAGE_FAULTS] = { 116 .symbol = "page-faults", 117 .alias = "faults", 118 }, 119 [PERF_COUNT_SW_CONTEXT_SWITCHES] = { 120 .symbol = "context-switches", 121 .alias = "cs", 122 }, 123 [PERF_COUNT_SW_CPU_MIGRATIONS] = { 124 .symbol = "cpu-migrations", 125 .alias = "migrations", 126 }, 127 [PERF_COUNT_SW_PAGE_FAULTS_MIN] = { 128 .symbol = "minor-faults", 129 .alias = "", 130 }, 131 [PERF_COUNT_SW_PAGE_FAULTS_MAJ] = { 132 .symbol = "major-faults", 133 .alias = "", 134 }, 135 [PERF_COUNT_SW_ALIGNMENT_FAULTS] = { 136 .symbol = "alignment-faults", 137 .alias = "", 138 }, 139 [PERF_COUNT_SW_EMULATION_FAULTS] = { 140 .symbol = "emulation-faults", 141 .alias = "", 142 }, 143 [PERF_COUNT_SW_DUMMY] = { 144 .symbol = "dummy", 145 .alias = "", 146 }, 147 [PERF_COUNT_SW_BPF_OUTPUT] = { 148 .symbol = "bpf-output", 149 .alias = "", 150 }, 151 [PERF_COUNT_SW_CGROUP_SWITCHES] = { 152 .symbol = "cgroup-switches", 153 .alias = "", 154 }, 155 }; 156 157 #define __PERF_EVENT_FIELD(config, name) \ 158 ((config & PERF_EVENT_##name##_MASK) >> PERF_EVENT_##name##_SHIFT) 159 160 #define PERF_EVENT_RAW(config) __PERF_EVENT_FIELD(config, RAW) 161 #define PERF_EVENT_CONFIG(config) __PERF_EVENT_FIELD(config, CONFIG) 162 #define PERF_EVENT_TYPE(config) __PERF_EVENT_FIELD(config, TYPE) 163 #define PERF_EVENT_ID(config) __PERF_EVENT_FIELD(config, EVENT) 164 165 #define for_each_subsystem(sys_dir, sys_dirent) \ 166 while ((sys_dirent = readdir(sys_dir)) != NULL) \ 167 if (sys_dirent->d_type == DT_DIR && \ 168 (strcmp(sys_dirent->d_name, ".")) && \ 169 (strcmp(sys_dirent->d_name, ".."))) 170 171 static int tp_event_has_id(const char *dir_path, struct dirent *evt_dir) 172 { 173 char evt_path[MAXPATHLEN]; 174 int fd; 175 176 snprintf(evt_path, MAXPATHLEN, "%s/%s/id", dir_path, evt_dir->d_name); 177 fd = open(evt_path, O_RDONLY); 178 if (fd < 0) 179 return -EINVAL; 180 close(fd); 181 182 return 0; 183 } 184 185 #define for_each_event(dir_path, evt_dir, evt_dirent) \ 186 while ((evt_dirent = readdir(evt_dir)) != NULL) \ 187 if (evt_dirent->d_type == DT_DIR && \ 188 (strcmp(evt_dirent->d_name, ".")) && \ 189 (strcmp(evt_dirent->d_name, "..")) && \ 190 (!tp_event_has_id(dir_path, evt_dirent))) 191 192 #define MAX_EVENT_LENGTH 512 193 194 void parse_events__handle_error(struct parse_events_error *err, int idx, 195 char *str, char *help) 196 { 197 if (WARN(!str, "WARNING: failed to provide error string\n")) { 198 free(help); 199 return; 200 } 201 switch (err->num_errors) { 202 case 0: 203 err->idx = idx; 204 err->str = str; 205 err->help = help; 206 break; 207 case 1: 208 err->first_idx = err->idx; 209 err->idx = idx; 210 err->first_str = err->str; 211 err->str = str; 212 err->first_help = err->help; 213 err->help = help; 214 break; 215 default: 216 pr_debug("Multiple errors dropping message: %s (%s)\n", 217 err->str, err->help); 218 free(err->str); 219 err->str = str; 220 free(err->help); 221 err->help = help; 222 break; 223 } 224 err->num_errors++; 225 } 226 227 struct tracepoint_path *tracepoint_id_to_path(u64 config) 228 { 229 struct tracepoint_path *path = NULL; 230 DIR *sys_dir, *evt_dir; 231 struct dirent *sys_dirent, *evt_dirent; 232 char id_buf[24]; 233 int fd; 234 u64 id; 235 char evt_path[MAXPATHLEN]; 236 char *dir_path; 237 238 sys_dir = tracing_events__opendir(); 239 if (!sys_dir) 240 return NULL; 241 242 for_each_subsystem(sys_dir, sys_dirent) { 243 dir_path = get_events_file(sys_dirent->d_name); 244 if (!dir_path) 245 continue; 246 evt_dir = opendir(dir_path); 247 if (!evt_dir) 248 goto next; 249 250 for_each_event(dir_path, evt_dir, evt_dirent) { 251 252 scnprintf(evt_path, MAXPATHLEN, "%s/%s/id", dir_path, 253 evt_dirent->d_name); 254 fd = open(evt_path, O_RDONLY); 255 if (fd < 0) 256 continue; 257 if (read(fd, id_buf, sizeof(id_buf)) < 0) { 258 close(fd); 259 continue; 260 } 261 close(fd); 262 id = atoll(id_buf); 263 if (id == config) { 264 put_events_file(dir_path); 265 closedir(evt_dir); 266 closedir(sys_dir); 267 path = zalloc(sizeof(*path)); 268 if (!path) 269 return NULL; 270 if (asprintf(&path->system, "%.*s", MAX_EVENT_LENGTH, sys_dirent->d_name) < 0) { 271 free(path); 272 return NULL; 273 } 274 if (asprintf(&path->name, "%.*s", MAX_EVENT_LENGTH, evt_dirent->d_name) < 0) { 275 zfree(&path->system); 276 free(path); 277 return NULL; 278 } 279 return path; 280 } 281 } 282 closedir(evt_dir); 283 next: 284 put_events_file(dir_path); 285 } 286 287 closedir(sys_dir); 288 return NULL; 289 } 290 291 struct tracepoint_path *tracepoint_name_to_path(const char *name) 292 { 293 struct tracepoint_path *path = zalloc(sizeof(*path)); 294 char *str = strchr(name, ':'); 295 296 if (path == NULL || str == NULL) { 297 free(path); 298 return NULL; 299 } 300 301 path->system = strndup(name, str - name); 302 path->name = strdup(str+1); 303 304 if (path->system == NULL || path->name == NULL) { 305 zfree(&path->system); 306 zfree(&path->name); 307 zfree(&path); 308 } 309 310 return path; 311 } 312 313 const char *event_type(int type) 314 { 315 switch (type) { 316 case PERF_TYPE_HARDWARE: 317 return "hardware"; 318 319 case PERF_TYPE_SOFTWARE: 320 return "software"; 321 322 case PERF_TYPE_TRACEPOINT: 323 return "tracepoint"; 324 325 case PERF_TYPE_HW_CACHE: 326 return "hardware-cache"; 327 328 default: 329 break; 330 } 331 332 return "unknown"; 333 } 334 335 static int parse_events__is_name_term(struct parse_events_term *term) 336 { 337 return term->type_term == PARSE_EVENTS__TERM_TYPE_NAME; 338 } 339 340 static char *get_config_name(struct list_head *head_terms) 341 { 342 struct parse_events_term *term; 343 344 if (!head_terms) 345 return NULL; 346 347 list_for_each_entry(term, head_terms, list) 348 if (parse_events__is_name_term(term)) 349 return term->val.str; 350 351 return NULL; 352 } 353 354 static struct evsel * 355 __add_event(struct list_head *list, int *idx, 356 struct perf_event_attr *attr, 357 bool init_attr, 358 char *name, struct perf_pmu *pmu, 359 struct list_head *config_terms, bool auto_merge_stats, 360 const char *cpu_list) 361 { 362 struct evsel *evsel; 363 struct perf_cpu_map *cpus = pmu ? perf_cpu_map__get(pmu->cpus) : 364 cpu_list ? perf_cpu_map__new(cpu_list) : NULL; 365 366 if (pmu && attr->type == PERF_TYPE_RAW) 367 perf_pmu__warn_invalid_config(pmu, attr->config, name); 368 369 if (init_attr) 370 event_attr_init(attr); 371 372 evsel = evsel__new_idx(attr, *idx); 373 if (!evsel) { 374 perf_cpu_map__put(cpus); 375 return NULL; 376 } 377 378 (*idx)++; 379 evsel->core.cpus = cpus; 380 evsel->core.own_cpus = perf_cpu_map__get(cpus); 381 evsel->core.system_wide = pmu ? pmu->is_uncore : false; 382 evsel->auto_merge_stats = auto_merge_stats; 383 384 if (name) 385 evsel->name = strdup(name); 386 387 if (config_terms) 388 list_splice_init(config_terms, &evsel->config_terms); 389 390 if (list) 391 list_add_tail(&evsel->core.node, list); 392 393 return evsel; 394 } 395 396 struct evsel *parse_events__add_event(int idx, struct perf_event_attr *attr, 397 char *name, struct perf_pmu *pmu) 398 { 399 return __add_event(NULL, &idx, attr, false, name, pmu, NULL, false, 400 NULL); 401 } 402 403 static int add_event(struct list_head *list, int *idx, 404 struct perf_event_attr *attr, char *name, 405 struct list_head *config_terms) 406 { 407 return __add_event(list, idx, attr, true, name, NULL, config_terms, 408 false, NULL) ? 0 : -ENOMEM; 409 } 410 411 static int add_event_tool(struct list_head *list, int *idx, 412 enum perf_tool_event tool_event) 413 { 414 struct evsel *evsel; 415 struct perf_event_attr attr = { 416 .type = PERF_TYPE_SOFTWARE, 417 .config = PERF_COUNT_SW_DUMMY, 418 }; 419 420 evsel = __add_event(list, idx, &attr, true, NULL, NULL, NULL, false, 421 "0"); 422 if (!evsel) 423 return -ENOMEM; 424 evsel->tool_event = tool_event; 425 if (tool_event == PERF_TOOL_DURATION_TIME) 426 evsel->unit = "ns"; 427 return 0; 428 } 429 430 static int parse_aliases(char *str, const char *names[][EVSEL__MAX_ALIASES], int size) 431 { 432 int i, j; 433 int n, longest = -1; 434 435 for (i = 0; i < size; i++) { 436 for (j = 0; j < EVSEL__MAX_ALIASES && names[i][j]; j++) { 437 n = strlen(names[i][j]); 438 if (n > longest && !strncasecmp(str, names[i][j], n)) 439 longest = n; 440 } 441 if (longest > 0) 442 return i; 443 } 444 445 return -1; 446 } 447 448 typedef int config_term_func_t(struct perf_event_attr *attr, 449 struct parse_events_term *term, 450 struct parse_events_error *err); 451 static int config_term_common(struct perf_event_attr *attr, 452 struct parse_events_term *term, 453 struct parse_events_error *err); 454 static int config_attr(struct perf_event_attr *attr, 455 struct list_head *head, 456 struct parse_events_error *err, 457 config_term_func_t config_term); 458 459 int parse_events_add_cache(struct list_head *list, int *idx, 460 char *type, char *op_result1, char *op_result2, 461 struct parse_events_error *err, 462 struct list_head *head_config, 463 struct parse_events_state *parse_state) 464 { 465 struct perf_event_attr attr; 466 LIST_HEAD(config_terms); 467 char name[MAX_NAME_LEN], *config_name; 468 int cache_type = -1, cache_op = -1, cache_result = -1; 469 char *op_result[2] = { op_result1, op_result2 }; 470 int i, n, ret; 471 bool hybrid; 472 473 /* 474 * No fallback - if we cannot get a clear cache type 475 * then bail out: 476 */ 477 cache_type = parse_aliases(type, evsel__hw_cache, PERF_COUNT_HW_CACHE_MAX); 478 if (cache_type == -1) 479 return -EINVAL; 480 481 config_name = get_config_name(head_config); 482 n = snprintf(name, MAX_NAME_LEN, "%s", type); 483 484 for (i = 0; (i < 2) && (op_result[i]); i++) { 485 char *str = op_result[i]; 486 487 n += snprintf(name + n, MAX_NAME_LEN - n, "-%s", str); 488 489 if (cache_op == -1) { 490 cache_op = parse_aliases(str, evsel__hw_cache_op, 491 PERF_COUNT_HW_CACHE_OP_MAX); 492 if (cache_op >= 0) { 493 if (!evsel__is_cache_op_valid(cache_type, cache_op)) 494 return -EINVAL; 495 continue; 496 } 497 } 498 499 if (cache_result == -1) { 500 cache_result = parse_aliases(str, evsel__hw_cache_result, 501 PERF_COUNT_HW_CACHE_RESULT_MAX); 502 if (cache_result >= 0) 503 continue; 504 } 505 } 506 507 /* 508 * Fall back to reads: 509 */ 510 if (cache_op == -1) 511 cache_op = PERF_COUNT_HW_CACHE_OP_READ; 512 513 /* 514 * Fall back to accesses: 515 */ 516 if (cache_result == -1) 517 cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS; 518 519 memset(&attr, 0, sizeof(attr)); 520 attr.config = cache_type | (cache_op << 8) | (cache_result << 16); 521 attr.type = PERF_TYPE_HW_CACHE; 522 523 if (head_config) { 524 if (config_attr(&attr, head_config, err, 525 config_term_common)) 526 return -EINVAL; 527 528 if (get_config_terms(head_config, &config_terms)) 529 return -ENOMEM; 530 } 531 532 ret = parse_events__add_cache_hybrid(list, idx, &attr, 533 config_name ? : name, &config_terms, 534 &hybrid, parse_state); 535 if (hybrid) 536 goto out_free_terms; 537 538 ret = add_event(list, idx, &attr, config_name ? : name, &config_terms); 539 out_free_terms: 540 free_config_terms(&config_terms); 541 return ret; 542 } 543 544 static void tracepoint_error(struct parse_events_error *e, int err, 545 const char *sys, const char *name) 546 { 547 const char *str; 548 char help[BUFSIZ]; 549 550 if (!e) 551 return; 552 553 /* 554 * We get error directly from syscall errno ( > 0), 555 * or from encoded pointer's error ( < 0). 556 */ 557 err = abs(err); 558 559 switch (err) { 560 case EACCES: 561 str = "can't access trace events"; 562 break; 563 case ENOENT: 564 str = "unknown tracepoint"; 565 break; 566 default: 567 str = "failed to add tracepoint"; 568 break; 569 } 570 571 tracing_path__strerror_open_tp(err, help, sizeof(help), sys, name); 572 parse_events__handle_error(e, 0, strdup(str), strdup(help)); 573 } 574 575 static int add_tracepoint(struct list_head *list, int *idx, 576 const char *sys_name, const char *evt_name, 577 struct parse_events_error *err, 578 struct list_head *head_config) 579 { 580 struct evsel *evsel = evsel__newtp_idx(sys_name, evt_name, (*idx)++); 581 582 if (IS_ERR(evsel)) { 583 tracepoint_error(err, PTR_ERR(evsel), sys_name, evt_name); 584 return PTR_ERR(evsel); 585 } 586 587 if (head_config) { 588 LIST_HEAD(config_terms); 589 590 if (get_config_terms(head_config, &config_terms)) 591 return -ENOMEM; 592 list_splice(&config_terms, &evsel->config_terms); 593 } 594 595 list_add_tail(&evsel->core.node, list); 596 return 0; 597 } 598 599 static int add_tracepoint_multi_event(struct list_head *list, int *idx, 600 const char *sys_name, const char *evt_name, 601 struct parse_events_error *err, 602 struct list_head *head_config) 603 { 604 char *evt_path; 605 struct dirent *evt_ent; 606 DIR *evt_dir; 607 int ret = 0, found = 0; 608 609 evt_path = get_events_file(sys_name); 610 if (!evt_path) { 611 tracepoint_error(err, errno, sys_name, evt_name); 612 return -1; 613 } 614 evt_dir = opendir(evt_path); 615 if (!evt_dir) { 616 put_events_file(evt_path); 617 tracepoint_error(err, errno, sys_name, evt_name); 618 return -1; 619 } 620 621 while (!ret && (evt_ent = readdir(evt_dir))) { 622 if (!strcmp(evt_ent->d_name, ".") 623 || !strcmp(evt_ent->d_name, "..") 624 || !strcmp(evt_ent->d_name, "enable") 625 || !strcmp(evt_ent->d_name, "filter")) 626 continue; 627 628 if (!strglobmatch(evt_ent->d_name, evt_name)) 629 continue; 630 631 found++; 632 633 ret = add_tracepoint(list, idx, sys_name, evt_ent->d_name, 634 err, head_config); 635 } 636 637 if (!found) { 638 tracepoint_error(err, ENOENT, sys_name, evt_name); 639 ret = -1; 640 } 641 642 put_events_file(evt_path); 643 closedir(evt_dir); 644 return ret; 645 } 646 647 static int add_tracepoint_event(struct list_head *list, int *idx, 648 const char *sys_name, const char *evt_name, 649 struct parse_events_error *err, 650 struct list_head *head_config) 651 { 652 return strpbrk(evt_name, "*?") ? 653 add_tracepoint_multi_event(list, idx, sys_name, evt_name, 654 err, head_config) : 655 add_tracepoint(list, idx, sys_name, evt_name, 656 err, head_config); 657 } 658 659 static int add_tracepoint_multi_sys(struct list_head *list, int *idx, 660 const char *sys_name, const char *evt_name, 661 struct parse_events_error *err, 662 struct list_head *head_config) 663 { 664 struct dirent *events_ent; 665 DIR *events_dir; 666 int ret = 0; 667 668 events_dir = tracing_events__opendir(); 669 if (!events_dir) { 670 tracepoint_error(err, errno, sys_name, evt_name); 671 return -1; 672 } 673 674 while (!ret && (events_ent = readdir(events_dir))) { 675 if (!strcmp(events_ent->d_name, ".") 676 || !strcmp(events_ent->d_name, "..") 677 || !strcmp(events_ent->d_name, "enable") 678 || !strcmp(events_ent->d_name, "header_event") 679 || !strcmp(events_ent->d_name, "header_page")) 680 continue; 681 682 if (!strglobmatch(events_ent->d_name, sys_name)) 683 continue; 684 685 ret = add_tracepoint_event(list, idx, events_ent->d_name, 686 evt_name, err, head_config); 687 } 688 689 closedir(events_dir); 690 return ret; 691 } 692 693 #ifdef HAVE_LIBBPF_SUPPORT 694 struct __add_bpf_event_param { 695 struct parse_events_state *parse_state; 696 struct list_head *list; 697 struct list_head *head_config; 698 }; 699 700 static int add_bpf_event(const char *group, const char *event, int fd, struct bpf_object *obj, 701 void *_param) 702 { 703 LIST_HEAD(new_evsels); 704 struct __add_bpf_event_param *param = _param; 705 struct parse_events_state *parse_state = param->parse_state; 706 struct list_head *list = param->list; 707 struct evsel *pos; 708 int err; 709 /* 710 * Check if we should add the event, i.e. if it is a TP but starts with a '!', 711 * then don't add the tracepoint, this will be used for something else, like 712 * adding to a BPF_MAP_TYPE_PROG_ARRAY. 713 * 714 * See tools/perf/examples/bpf/augmented_raw_syscalls.c 715 */ 716 if (group[0] == '!') 717 return 0; 718 719 pr_debug("add bpf event %s:%s and attach bpf program %d\n", 720 group, event, fd); 721 722 err = parse_events_add_tracepoint(&new_evsels, &parse_state->idx, group, 723 event, parse_state->error, 724 param->head_config); 725 if (err) { 726 struct evsel *evsel, *tmp; 727 728 pr_debug("Failed to add BPF event %s:%s\n", 729 group, event); 730 list_for_each_entry_safe(evsel, tmp, &new_evsels, core.node) { 731 list_del_init(&evsel->core.node); 732 evsel__delete(evsel); 733 } 734 return err; 735 } 736 pr_debug("adding %s:%s\n", group, event); 737 738 list_for_each_entry(pos, &new_evsels, core.node) { 739 pr_debug("adding %s:%s to %p\n", 740 group, event, pos); 741 pos->bpf_fd = fd; 742 pos->bpf_obj = obj; 743 } 744 list_splice(&new_evsels, list); 745 return 0; 746 } 747 748 int parse_events_load_bpf_obj(struct parse_events_state *parse_state, 749 struct list_head *list, 750 struct bpf_object *obj, 751 struct list_head *head_config) 752 { 753 int err; 754 char errbuf[BUFSIZ]; 755 struct __add_bpf_event_param param = {parse_state, list, head_config}; 756 static bool registered_unprobe_atexit = false; 757 758 if (IS_ERR(obj) || !obj) { 759 snprintf(errbuf, sizeof(errbuf), 760 "Internal error: load bpf obj with NULL"); 761 err = -EINVAL; 762 goto errout; 763 } 764 765 /* 766 * Register atexit handler before calling bpf__probe() so 767 * bpf__probe() don't need to unprobe probe points its already 768 * created when failure. 769 */ 770 if (!registered_unprobe_atexit) { 771 atexit(bpf__clear); 772 registered_unprobe_atexit = true; 773 } 774 775 err = bpf__probe(obj); 776 if (err) { 777 bpf__strerror_probe(obj, err, errbuf, sizeof(errbuf)); 778 goto errout; 779 } 780 781 err = bpf__load(obj); 782 if (err) { 783 bpf__strerror_load(obj, err, errbuf, sizeof(errbuf)); 784 goto errout; 785 } 786 787 err = bpf__foreach_event(obj, add_bpf_event, ¶m); 788 if (err) { 789 snprintf(errbuf, sizeof(errbuf), 790 "Attach events in BPF object failed"); 791 goto errout; 792 } 793 794 return 0; 795 errout: 796 parse_events__handle_error(parse_state->error, 0, 797 strdup(errbuf), strdup("(add -v to see detail)")); 798 return err; 799 } 800 801 static int 802 parse_events_config_bpf(struct parse_events_state *parse_state, 803 struct bpf_object *obj, 804 struct list_head *head_config) 805 { 806 struct parse_events_term *term; 807 int error_pos; 808 809 if (!head_config || list_empty(head_config)) 810 return 0; 811 812 list_for_each_entry(term, head_config, list) { 813 int err; 814 815 if (term->type_term != PARSE_EVENTS__TERM_TYPE_USER) { 816 parse_events__handle_error(parse_state->error, term->err_term, 817 strdup("Invalid config term for BPF object"), 818 NULL); 819 return -EINVAL; 820 } 821 822 err = bpf__config_obj(obj, term, parse_state->evlist, &error_pos); 823 if (err) { 824 char errbuf[BUFSIZ]; 825 int idx; 826 827 bpf__strerror_config_obj(obj, term, parse_state->evlist, 828 &error_pos, err, errbuf, 829 sizeof(errbuf)); 830 831 if (err == -BPF_LOADER_ERRNO__OBJCONF_MAP_VALUE) 832 idx = term->err_val; 833 else 834 idx = term->err_term + error_pos; 835 836 parse_events__handle_error(parse_state->error, idx, 837 strdup(errbuf), 838 strdup( 839 "Hint:\tValid config terms:\n" 840 " \tmap:[<arraymap>].value<indices>=[value]\n" 841 " \tmap:[<eventmap>].event<indices>=[event]\n" 842 "\n" 843 " \twhere <indices> is something like [0,3...5] or [all]\n" 844 " \t(add -v to see detail)")); 845 return err; 846 } 847 } 848 return 0; 849 } 850 851 /* 852 * Split config terms: 853 * perf record -e bpf.c/call-graph=fp,map:array.value[0]=1/ ... 854 * 'call-graph=fp' is 'evt config', should be applied to each 855 * events in bpf.c. 856 * 'map:array.value[0]=1' is 'obj config', should be processed 857 * with parse_events_config_bpf. 858 * 859 * Move object config terms from the first list to obj_head_config. 860 */ 861 static void 862 split_bpf_config_terms(struct list_head *evt_head_config, 863 struct list_head *obj_head_config) 864 { 865 struct parse_events_term *term, *temp; 866 867 /* 868 * Currently, all possible user config term 869 * belong to bpf object. parse_events__is_hardcoded_term() 870 * happens to be a good flag. 871 * 872 * See parse_events_config_bpf() and 873 * config_term_tracepoint(). 874 */ 875 list_for_each_entry_safe(term, temp, evt_head_config, list) 876 if (!parse_events__is_hardcoded_term(term)) 877 list_move_tail(&term->list, obj_head_config); 878 } 879 880 int parse_events_load_bpf(struct parse_events_state *parse_state, 881 struct list_head *list, 882 char *bpf_file_name, 883 bool source, 884 struct list_head *head_config) 885 { 886 int err; 887 struct bpf_object *obj; 888 LIST_HEAD(obj_head_config); 889 890 if (head_config) 891 split_bpf_config_terms(head_config, &obj_head_config); 892 893 obj = bpf__prepare_load(bpf_file_name, source); 894 if (IS_ERR(obj)) { 895 char errbuf[BUFSIZ]; 896 897 err = PTR_ERR(obj); 898 899 if (err == -ENOTSUP) 900 snprintf(errbuf, sizeof(errbuf), 901 "BPF support is not compiled"); 902 else 903 bpf__strerror_prepare_load(bpf_file_name, 904 source, 905 -err, errbuf, 906 sizeof(errbuf)); 907 908 parse_events__handle_error(parse_state->error, 0, 909 strdup(errbuf), strdup("(add -v to see detail)")); 910 return err; 911 } 912 913 err = parse_events_load_bpf_obj(parse_state, list, obj, head_config); 914 if (err) 915 return err; 916 err = parse_events_config_bpf(parse_state, obj, &obj_head_config); 917 918 /* 919 * Caller doesn't know anything about obj_head_config, 920 * so combine them together again before returning. 921 */ 922 if (head_config) 923 list_splice_tail(&obj_head_config, head_config); 924 return err; 925 } 926 #else // HAVE_LIBBPF_SUPPORT 927 int parse_events_load_bpf_obj(struct parse_events_state *parse_state, 928 struct list_head *list __maybe_unused, 929 struct bpf_object *obj __maybe_unused, 930 struct list_head *head_config __maybe_unused) 931 { 932 parse_events__handle_error(parse_state->error, 0, 933 strdup("BPF support is not compiled"), 934 strdup("Make sure libbpf-devel is available at build time.")); 935 return -ENOTSUP; 936 } 937 938 int parse_events_load_bpf(struct parse_events_state *parse_state, 939 struct list_head *list __maybe_unused, 940 char *bpf_file_name __maybe_unused, 941 bool source __maybe_unused, 942 struct list_head *head_config __maybe_unused) 943 { 944 parse_events__handle_error(parse_state->error, 0, 945 strdup("BPF support is not compiled"), 946 strdup("Make sure libbpf-devel is available at build time.")); 947 return -ENOTSUP; 948 } 949 #endif // HAVE_LIBBPF_SUPPORT 950 951 static int 952 parse_breakpoint_type(const char *type, struct perf_event_attr *attr) 953 { 954 int i; 955 956 for (i = 0; i < 3; i++) { 957 if (!type || !type[i]) 958 break; 959 960 #define CHECK_SET_TYPE(bit) \ 961 do { \ 962 if (attr->bp_type & bit) \ 963 return -EINVAL; \ 964 else \ 965 attr->bp_type |= bit; \ 966 } while (0) 967 968 switch (type[i]) { 969 case 'r': 970 CHECK_SET_TYPE(HW_BREAKPOINT_R); 971 break; 972 case 'w': 973 CHECK_SET_TYPE(HW_BREAKPOINT_W); 974 break; 975 case 'x': 976 CHECK_SET_TYPE(HW_BREAKPOINT_X); 977 break; 978 default: 979 return -EINVAL; 980 } 981 } 982 983 #undef CHECK_SET_TYPE 984 985 if (!attr->bp_type) /* Default */ 986 attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W; 987 988 return 0; 989 } 990 991 int parse_events_add_breakpoint(struct list_head *list, int *idx, 992 u64 addr, char *type, u64 len) 993 { 994 struct perf_event_attr attr; 995 996 memset(&attr, 0, sizeof(attr)); 997 attr.bp_addr = addr; 998 999 if (parse_breakpoint_type(type, &attr)) 1000 return -EINVAL; 1001 1002 /* Provide some defaults if len is not specified */ 1003 if (!len) { 1004 if (attr.bp_type == HW_BREAKPOINT_X) 1005 len = sizeof(long); 1006 else 1007 len = HW_BREAKPOINT_LEN_4; 1008 } 1009 1010 attr.bp_len = len; 1011 1012 attr.type = PERF_TYPE_BREAKPOINT; 1013 attr.sample_period = 1; 1014 1015 return add_event(list, idx, &attr, NULL, NULL); 1016 } 1017 1018 static int check_type_val(struct parse_events_term *term, 1019 struct parse_events_error *err, 1020 int type) 1021 { 1022 if (type == term->type_val) 1023 return 0; 1024 1025 if (err) { 1026 parse_events__handle_error(err, term->err_val, 1027 type == PARSE_EVENTS__TERM_TYPE_NUM 1028 ? strdup("expected numeric value") 1029 : strdup("expected string value"), 1030 NULL); 1031 } 1032 return -EINVAL; 1033 } 1034 1035 /* 1036 * Update according to parse-events.l 1037 */ 1038 static const char *config_term_names[__PARSE_EVENTS__TERM_TYPE_NR] = { 1039 [PARSE_EVENTS__TERM_TYPE_USER] = "<sysfs term>", 1040 [PARSE_EVENTS__TERM_TYPE_CONFIG] = "config", 1041 [PARSE_EVENTS__TERM_TYPE_CONFIG1] = "config1", 1042 [PARSE_EVENTS__TERM_TYPE_CONFIG2] = "config2", 1043 [PARSE_EVENTS__TERM_TYPE_NAME] = "name", 1044 [PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD] = "period", 1045 [PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ] = "freq", 1046 [PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE] = "branch_type", 1047 [PARSE_EVENTS__TERM_TYPE_TIME] = "time", 1048 [PARSE_EVENTS__TERM_TYPE_CALLGRAPH] = "call-graph", 1049 [PARSE_EVENTS__TERM_TYPE_STACKSIZE] = "stack-size", 1050 [PARSE_EVENTS__TERM_TYPE_NOINHERIT] = "no-inherit", 1051 [PARSE_EVENTS__TERM_TYPE_INHERIT] = "inherit", 1052 [PARSE_EVENTS__TERM_TYPE_MAX_STACK] = "max-stack", 1053 [PARSE_EVENTS__TERM_TYPE_MAX_EVENTS] = "nr", 1054 [PARSE_EVENTS__TERM_TYPE_OVERWRITE] = "overwrite", 1055 [PARSE_EVENTS__TERM_TYPE_NOOVERWRITE] = "no-overwrite", 1056 [PARSE_EVENTS__TERM_TYPE_DRV_CFG] = "driver-config", 1057 [PARSE_EVENTS__TERM_TYPE_PERCORE] = "percore", 1058 [PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT] = "aux-output", 1059 [PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE] = "aux-sample-size", 1060 }; 1061 1062 static bool config_term_shrinked; 1063 1064 static bool 1065 config_term_avail(int term_type, struct parse_events_error *err) 1066 { 1067 char *err_str; 1068 1069 if (term_type < 0 || term_type >= __PARSE_EVENTS__TERM_TYPE_NR) { 1070 parse_events__handle_error(err, -1, 1071 strdup("Invalid term_type"), NULL); 1072 return false; 1073 } 1074 if (!config_term_shrinked) 1075 return true; 1076 1077 switch (term_type) { 1078 case PARSE_EVENTS__TERM_TYPE_CONFIG: 1079 case PARSE_EVENTS__TERM_TYPE_CONFIG1: 1080 case PARSE_EVENTS__TERM_TYPE_CONFIG2: 1081 case PARSE_EVENTS__TERM_TYPE_NAME: 1082 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD: 1083 case PARSE_EVENTS__TERM_TYPE_PERCORE: 1084 return true; 1085 default: 1086 if (!err) 1087 return false; 1088 1089 /* term_type is validated so indexing is safe */ 1090 if (asprintf(&err_str, "'%s' is not usable in 'perf stat'", 1091 config_term_names[term_type]) >= 0) 1092 parse_events__handle_error(err, -1, err_str, NULL); 1093 return false; 1094 } 1095 } 1096 1097 void parse_events__shrink_config_terms(void) 1098 { 1099 config_term_shrinked = true; 1100 } 1101 1102 static int config_term_common(struct perf_event_attr *attr, 1103 struct parse_events_term *term, 1104 struct parse_events_error *err) 1105 { 1106 #define CHECK_TYPE_VAL(type) \ 1107 do { \ 1108 if (check_type_val(term, err, PARSE_EVENTS__TERM_TYPE_ ## type)) \ 1109 return -EINVAL; \ 1110 } while (0) 1111 1112 switch (term->type_term) { 1113 case PARSE_EVENTS__TERM_TYPE_CONFIG: 1114 CHECK_TYPE_VAL(NUM); 1115 attr->config = term->val.num; 1116 break; 1117 case PARSE_EVENTS__TERM_TYPE_CONFIG1: 1118 CHECK_TYPE_VAL(NUM); 1119 attr->config1 = term->val.num; 1120 break; 1121 case PARSE_EVENTS__TERM_TYPE_CONFIG2: 1122 CHECK_TYPE_VAL(NUM); 1123 attr->config2 = term->val.num; 1124 break; 1125 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD: 1126 CHECK_TYPE_VAL(NUM); 1127 break; 1128 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ: 1129 CHECK_TYPE_VAL(NUM); 1130 break; 1131 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE: 1132 CHECK_TYPE_VAL(STR); 1133 if (strcmp(term->val.str, "no") && 1134 parse_branch_str(term->val.str, 1135 &attr->branch_sample_type)) { 1136 parse_events__handle_error(err, term->err_val, 1137 strdup("invalid branch sample type"), 1138 NULL); 1139 return -EINVAL; 1140 } 1141 break; 1142 case PARSE_EVENTS__TERM_TYPE_TIME: 1143 CHECK_TYPE_VAL(NUM); 1144 if (term->val.num > 1) { 1145 parse_events__handle_error(err, term->err_val, 1146 strdup("expected 0 or 1"), 1147 NULL); 1148 return -EINVAL; 1149 } 1150 break; 1151 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH: 1152 CHECK_TYPE_VAL(STR); 1153 break; 1154 case PARSE_EVENTS__TERM_TYPE_STACKSIZE: 1155 CHECK_TYPE_VAL(NUM); 1156 break; 1157 case PARSE_EVENTS__TERM_TYPE_INHERIT: 1158 CHECK_TYPE_VAL(NUM); 1159 break; 1160 case PARSE_EVENTS__TERM_TYPE_NOINHERIT: 1161 CHECK_TYPE_VAL(NUM); 1162 break; 1163 case PARSE_EVENTS__TERM_TYPE_OVERWRITE: 1164 CHECK_TYPE_VAL(NUM); 1165 break; 1166 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE: 1167 CHECK_TYPE_VAL(NUM); 1168 break; 1169 case PARSE_EVENTS__TERM_TYPE_NAME: 1170 CHECK_TYPE_VAL(STR); 1171 break; 1172 case PARSE_EVENTS__TERM_TYPE_MAX_STACK: 1173 CHECK_TYPE_VAL(NUM); 1174 break; 1175 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS: 1176 CHECK_TYPE_VAL(NUM); 1177 break; 1178 case PARSE_EVENTS__TERM_TYPE_PERCORE: 1179 CHECK_TYPE_VAL(NUM); 1180 if ((unsigned int)term->val.num > 1) { 1181 parse_events__handle_error(err, term->err_val, 1182 strdup("expected 0 or 1"), 1183 NULL); 1184 return -EINVAL; 1185 } 1186 break; 1187 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT: 1188 CHECK_TYPE_VAL(NUM); 1189 break; 1190 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE: 1191 CHECK_TYPE_VAL(NUM); 1192 if (term->val.num > UINT_MAX) { 1193 parse_events__handle_error(err, term->err_val, 1194 strdup("too big"), 1195 NULL); 1196 return -EINVAL; 1197 } 1198 break; 1199 default: 1200 parse_events__handle_error(err, term->err_term, 1201 strdup("unknown term"), 1202 parse_events_formats_error_string(NULL)); 1203 return -EINVAL; 1204 } 1205 1206 /* 1207 * Check term availability after basic checking so 1208 * PARSE_EVENTS__TERM_TYPE_USER can be found and filtered. 1209 * 1210 * If check availability at the entry of this function, 1211 * user will see "'<sysfs term>' is not usable in 'perf stat'" 1212 * if an invalid config term is provided for legacy events 1213 * (for example, instructions/badterm/...), which is confusing. 1214 */ 1215 if (!config_term_avail(term->type_term, err)) 1216 return -EINVAL; 1217 return 0; 1218 #undef CHECK_TYPE_VAL 1219 } 1220 1221 static int config_term_pmu(struct perf_event_attr *attr, 1222 struct parse_events_term *term, 1223 struct parse_events_error *err) 1224 { 1225 if (term->type_term == PARSE_EVENTS__TERM_TYPE_USER || 1226 term->type_term == PARSE_EVENTS__TERM_TYPE_DRV_CFG) 1227 /* 1228 * Always succeed for sysfs terms, as we dont know 1229 * at this point what type they need to have. 1230 */ 1231 return 0; 1232 else 1233 return config_term_common(attr, term, err); 1234 } 1235 1236 static int config_term_tracepoint(struct perf_event_attr *attr, 1237 struct parse_events_term *term, 1238 struct parse_events_error *err) 1239 { 1240 switch (term->type_term) { 1241 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH: 1242 case PARSE_EVENTS__TERM_TYPE_STACKSIZE: 1243 case PARSE_EVENTS__TERM_TYPE_INHERIT: 1244 case PARSE_EVENTS__TERM_TYPE_NOINHERIT: 1245 case PARSE_EVENTS__TERM_TYPE_MAX_STACK: 1246 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS: 1247 case PARSE_EVENTS__TERM_TYPE_OVERWRITE: 1248 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE: 1249 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT: 1250 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE: 1251 return config_term_common(attr, term, err); 1252 default: 1253 if (err) { 1254 parse_events__handle_error(err, term->err_term, 1255 strdup("unknown term"), 1256 strdup("valid terms: call-graph,stack-size\n")); 1257 } 1258 return -EINVAL; 1259 } 1260 1261 return 0; 1262 } 1263 1264 static int config_attr(struct perf_event_attr *attr, 1265 struct list_head *head, 1266 struct parse_events_error *err, 1267 config_term_func_t config_term) 1268 { 1269 struct parse_events_term *term; 1270 1271 list_for_each_entry(term, head, list) 1272 if (config_term(attr, term, err)) 1273 return -EINVAL; 1274 1275 return 0; 1276 } 1277 1278 static int get_config_terms(struct list_head *head_config, 1279 struct list_head *head_terms __maybe_unused) 1280 { 1281 #define ADD_CONFIG_TERM(__type, __weak) \ 1282 struct evsel_config_term *__t; \ 1283 \ 1284 __t = zalloc(sizeof(*__t)); \ 1285 if (!__t) \ 1286 return -ENOMEM; \ 1287 \ 1288 INIT_LIST_HEAD(&__t->list); \ 1289 __t->type = EVSEL__CONFIG_TERM_ ## __type; \ 1290 __t->weak = __weak; \ 1291 list_add_tail(&__t->list, head_terms) 1292 1293 #define ADD_CONFIG_TERM_VAL(__type, __name, __val, __weak) \ 1294 do { \ 1295 ADD_CONFIG_TERM(__type, __weak); \ 1296 __t->val.__name = __val; \ 1297 } while (0) 1298 1299 #define ADD_CONFIG_TERM_STR(__type, __val, __weak) \ 1300 do { \ 1301 ADD_CONFIG_TERM(__type, __weak); \ 1302 __t->val.str = strdup(__val); \ 1303 if (!__t->val.str) { \ 1304 zfree(&__t); \ 1305 return -ENOMEM; \ 1306 } \ 1307 __t->free_str = true; \ 1308 } while (0) 1309 1310 struct parse_events_term *term; 1311 1312 list_for_each_entry(term, head_config, list) { 1313 switch (term->type_term) { 1314 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD: 1315 ADD_CONFIG_TERM_VAL(PERIOD, period, term->val.num, term->weak); 1316 break; 1317 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ: 1318 ADD_CONFIG_TERM_VAL(FREQ, freq, term->val.num, term->weak); 1319 break; 1320 case PARSE_EVENTS__TERM_TYPE_TIME: 1321 ADD_CONFIG_TERM_VAL(TIME, time, term->val.num, term->weak); 1322 break; 1323 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH: 1324 ADD_CONFIG_TERM_STR(CALLGRAPH, term->val.str, term->weak); 1325 break; 1326 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE: 1327 ADD_CONFIG_TERM_STR(BRANCH, term->val.str, term->weak); 1328 break; 1329 case PARSE_EVENTS__TERM_TYPE_STACKSIZE: 1330 ADD_CONFIG_TERM_VAL(STACK_USER, stack_user, 1331 term->val.num, term->weak); 1332 break; 1333 case PARSE_EVENTS__TERM_TYPE_INHERIT: 1334 ADD_CONFIG_TERM_VAL(INHERIT, inherit, 1335 term->val.num ? 1 : 0, term->weak); 1336 break; 1337 case PARSE_EVENTS__TERM_TYPE_NOINHERIT: 1338 ADD_CONFIG_TERM_VAL(INHERIT, inherit, 1339 term->val.num ? 0 : 1, term->weak); 1340 break; 1341 case PARSE_EVENTS__TERM_TYPE_MAX_STACK: 1342 ADD_CONFIG_TERM_VAL(MAX_STACK, max_stack, 1343 term->val.num, term->weak); 1344 break; 1345 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS: 1346 ADD_CONFIG_TERM_VAL(MAX_EVENTS, max_events, 1347 term->val.num, term->weak); 1348 break; 1349 case PARSE_EVENTS__TERM_TYPE_OVERWRITE: 1350 ADD_CONFIG_TERM_VAL(OVERWRITE, overwrite, 1351 term->val.num ? 1 : 0, term->weak); 1352 break; 1353 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE: 1354 ADD_CONFIG_TERM_VAL(OVERWRITE, overwrite, 1355 term->val.num ? 0 : 1, term->weak); 1356 break; 1357 case PARSE_EVENTS__TERM_TYPE_DRV_CFG: 1358 ADD_CONFIG_TERM_STR(DRV_CFG, term->val.str, term->weak); 1359 break; 1360 case PARSE_EVENTS__TERM_TYPE_PERCORE: 1361 ADD_CONFIG_TERM_VAL(PERCORE, percore, 1362 term->val.num ? true : false, term->weak); 1363 break; 1364 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT: 1365 ADD_CONFIG_TERM_VAL(AUX_OUTPUT, aux_output, 1366 term->val.num ? 1 : 0, term->weak); 1367 break; 1368 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE: 1369 ADD_CONFIG_TERM_VAL(AUX_SAMPLE_SIZE, aux_sample_size, 1370 term->val.num, term->weak); 1371 break; 1372 default: 1373 break; 1374 } 1375 } 1376 return 0; 1377 } 1378 1379 /* 1380 * Add EVSEL__CONFIG_TERM_CFG_CHG where cfg_chg will have a bit set for 1381 * each bit of attr->config that the user has changed. 1382 */ 1383 static int get_config_chgs(struct perf_pmu *pmu, struct list_head *head_config, 1384 struct list_head *head_terms) 1385 { 1386 struct parse_events_term *term; 1387 u64 bits = 0; 1388 int type; 1389 1390 list_for_each_entry(term, head_config, list) { 1391 switch (term->type_term) { 1392 case PARSE_EVENTS__TERM_TYPE_USER: 1393 type = perf_pmu__format_type(&pmu->format, term->config); 1394 if (type != PERF_PMU_FORMAT_VALUE_CONFIG) 1395 continue; 1396 bits |= perf_pmu__format_bits(&pmu->format, term->config); 1397 break; 1398 case PARSE_EVENTS__TERM_TYPE_CONFIG: 1399 bits = ~(u64)0; 1400 break; 1401 default: 1402 break; 1403 } 1404 } 1405 1406 if (bits) 1407 ADD_CONFIG_TERM_VAL(CFG_CHG, cfg_chg, bits, false); 1408 1409 #undef ADD_CONFIG_TERM 1410 return 0; 1411 } 1412 1413 int parse_events_add_tracepoint(struct list_head *list, int *idx, 1414 const char *sys, const char *event, 1415 struct parse_events_error *err, 1416 struct list_head *head_config) 1417 { 1418 if (head_config) { 1419 struct perf_event_attr attr; 1420 1421 if (config_attr(&attr, head_config, err, 1422 config_term_tracepoint)) 1423 return -EINVAL; 1424 } 1425 1426 if (strpbrk(sys, "*?")) 1427 return add_tracepoint_multi_sys(list, idx, sys, event, 1428 err, head_config); 1429 else 1430 return add_tracepoint_event(list, idx, sys, event, 1431 err, head_config); 1432 } 1433 1434 int parse_events_add_numeric(struct parse_events_state *parse_state, 1435 struct list_head *list, 1436 u32 type, u64 config, 1437 struct list_head *head_config) 1438 { 1439 struct perf_event_attr attr; 1440 LIST_HEAD(config_terms); 1441 bool hybrid; 1442 int ret; 1443 1444 memset(&attr, 0, sizeof(attr)); 1445 attr.type = type; 1446 attr.config = config; 1447 1448 if (head_config) { 1449 if (config_attr(&attr, head_config, parse_state->error, 1450 config_term_common)) 1451 return -EINVAL; 1452 1453 if (get_config_terms(head_config, &config_terms)) 1454 return -ENOMEM; 1455 } 1456 1457 ret = parse_events__add_numeric_hybrid(parse_state, list, &attr, 1458 get_config_name(head_config), 1459 &config_terms, &hybrid); 1460 if (hybrid) 1461 goto out_free_terms; 1462 1463 ret = add_event(list, &parse_state->idx, &attr, 1464 get_config_name(head_config), &config_terms); 1465 out_free_terms: 1466 free_config_terms(&config_terms); 1467 return ret; 1468 } 1469 1470 int parse_events_add_tool(struct parse_events_state *parse_state, 1471 struct list_head *list, 1472 int tool_event) 1473 { 1474 return add_event_tool(list, &parse_state->idx, tool_event); 1475 } 1476 1477 static bool config_term_percore(struct list_head *config_terms) 1478 { 1479 struct evsel_config_term *term; 1480 1481 list_for_each_entry(term, config_terms, list) { 1482 if (term->type == EVSEL__CONFIG_TERM_PERCORE) 1483 return term->val.percore; 1484 } 1485 1486 return false; 1487 } 1488 1489 static int parse_events__inside_hybrid_pmu(struct parse_events_state *parse_state, 1490 struct list_head *list, char *name, 1491 struct list_head *head_config) 1492 { 1493 struct parse_events_term *term; 1494 int ret = -1; 1495 1496 if (parse_state->fake_pmu || !head_config || list_empty(head_config) || 1497 !perf_pmu__is_hybrid(name)) { 1498 return -1; 1499 } 1500 1501 /* 1502 * More than one term in list. 1503 */ 1504 if (head_config->next && head_config->next->next != head_config) 1505 return -1; 1506 1507 term = list_first_entry(head_config, struct parse_events_term, list); 1508 if (term && term->config && strcmp(term->config, "event")) { 1509 ret = parse_events__with_hybrid_pmu(parse_state, term->config, 1510 name, list); 1511 } 1512 1513 return ret; 1514 } 1515 1516 int parse_events_add_pmu(struct parse_events_state *parse_state, 1517 struct list_head *list, char *name, 1518 struct list_head *head_config, 1519 bool auto_merge_stats, 1520 bool use_alias) 1521 { 1522 struct perf_event_attr attr; 1523 struct perf_pmu_info info; 1524 struct perf_pmu *pmu; 1525 struct evsel *evsel; 1526 struct parse_events_error *err = parse_state->error; 1527 bool use_uncore_alias; 1528 LIST_HEAD(config_terms); 1529 1530 if (verbose > 1) { 1531 fprintf(stderr, "Attempting to add event pmu '%s' with '", 1532 name); 1533 if (head_config) { 1534 struct parse_events_term *term; 1535 1536 list_for_each_entry(term, head_config, list) { 1537 fprintf(stderr, "%s,", term->config); 1538 } 1539 } 1540 fprintf(stderr, "' that may result in non-fatal errors\n"); 1541 } 1542 1543 pmu = parse_state->fake_pmu ?: perf_pmu__find(name); 1544 if (!pmu) { 1545 char *err_str; 1546 1547 if (asprintf(&err_str, 1548 "Cannot find PMU `%s'. Missing kernel support?", 1549 name) >= 0) 1550 parse_events__handle_error(err, 0, err_str, NULL); 1551 return -EINVAL; 1552 } 1553 1554 if (pmu->default_config) { 1555 memcpy(&attr, pmu->default_config, 1556 sizeof(struct perf_event_attr)); 1557 } else { 1558 memset(&attr, 0, sizeof(attr)); 1559 } 1560 1561 use_uncore_alias = (pmu->is_uncore && use_alias); 1562 1563 if (!head_config) { 1564 attr.type = pmu->type; 1565 evsel = __add_event(list, &parse_state->idx, &attr, true, NULL, 1566 pmu, NULL, auto_merge_stats, NULL); 1567 if (evsel) { 1568 evsel->pmu_name = name ? strdup(name) : NULL; 1569 evsel->use_uncore_alias = use_uncore_alias; 1570 return 0; 1571 } else { 1572 return -ENOMEM; 1573 } 1574 } 1575 1576 if (!parse_state->fake_pmu && perf_pmu__check_alias(pmu, head_config, &info)) 1577 return -EINVAL; 1578 1579 if (verbose > 1) { 1580 fprintf(stderr, "After aliases, add event pmu '%s' with '", 1581 name); 1582 if (head_config) { 1583 struct parse_events_term *term; 1584 1585 list_for_each_entry(term, head_config, list) { 1586 fprintf(stderr, "%s,", term->config); 1587 } 1588 } 1589 fprintf(stderr, "' that may result in non-fatal errors\n"); 1590 } 1591 1592 /* 1593 * Configure hardcoded terms first, no need to check 1594 * return value when called with fail == 0 ;) 1595 */ 1596 if (config_attr(&attr, head_config, parse_state->error, config_term_pmu)) 1597 return -EINVAL; 1598 1599 if (get_config_terms(head_config, &config_terms)) 1600 return -ENOMEM; 1601 1602 /* 1603 * When using default config, record which bits of attr->config were 1604 * changed by the user. 1605 */ 1606 if (pmu->default_config && get_config_chgs(pmu, head_config, &config_terms)) 1607 return -ENOMEM; 1608 1609 if (!parse_events__inside_hybrid_pmu(parse_state, list, name, 1610 head_config)) { 1611 return 0; 1612 } 1613 1614 if (!parse_state->fake_pmu && perf_pmu__config(pmu, &attr, head_config, parse_state->error)) { 1615 free_config_terms(&config_terms); 1616 return -EINVAL; 1617 } 1618 1619 evsel = __add_event(list, &parse_state->idx, &attr, true, 1620 get_config_name(head_config), pmu, 1621 &config_terms, auto_merge_stats, NULL); 1622 if (!evsel) 1623 return -ENOMEM; 1624 1625 if (evsel->name) 1626 evsel->use_config_name = true; 1627 1628 evsel->pmu_name = name ? strdup(name) : NULL; 1629 evsel->use_uncore_alias = use_uncore_alias; 1630 evsel->percore = config_term_percore(&evsel->config_terms); 1631 1632 if (parse_state->fake_pmu) 1633 return 0; 1634 1635 evsel->unit = info.unit; 1636 evsel->scale = info.scale; 1637 evsel->per_pkg = info.per_pkg; 1638 evsel->snapshot = info.snapshot; 1639 evsel->metric_expr = info.metric_expr; 1640 evsel->metric_name = info.metric_name; 1641 return 0; 1642 } 1643 1644 int parse_events_multi_pmu_add(struct parse_events_state *parse_state, 1645 char *str, struct list_head **listp) 1646 { 1647 struct parse_events_term *term; 1648 struct list_head *list; 1649 struct perf_pmu *pmu = NULL; 1650 int ok = 0; 1651 1652 *listp = NULL; 1653 /* Add it for all PMUs that support the alias */ 1654 list = malloc(sizeof(struct list_head)); 1655 if (!list) 1656 return -1; 1657 INIT_LIST_HEAD(list); 1658 while ((pmu = perf_pmu__scan(pmu)) != NULL) { 1659 struct perf_pmu_alias *alias; 1660 1661 list_for_each_entry(alias, &pmu->aliases, list) { 1662 if (!strcasecmp(alias->name, str)) { 1663 struct list_head *head; 1664 char *config; 1665 1666 head = malloc(sizeof(struct list_head)); 1667 if (!head) 1668 return -1; 1669 INIT_LIST_HEAD(head); 1670 config = strdup(str); 1671 if (!config) 1672 return -1; 1673 if (parse_events_term__num(&term, 1674 PARSE_EVENTS__TERM_TYPE_USER, 1675 config, 1, false, &config, 1676 NULL) < 0) { 1677 free(list); 1678 free(config); 1679 return -1; 1680 } 1681 list_add_tail(&term->list, head); 1682 1683 if (!parse_events_add_pmu(parse_state, list, 1684 pmu->name, head, 1685 true, true)) { 1686 pr_debug("%s -> %s/%s/\n", str, 1687 pmu->name, alias->str); 1688 ok++; 1689 } 1690 1691 parse_events_terms__delete(head); 1692 } 1693 } 1694 } 1695 if (!ok) { 1696 free(list); 1697 return -1; 1698 } 1699 *listp = list; 1700 return 0; 1701 } 1702 1703 int parse_events__modifier_group(struct list_head *list, 1704 char *event_mod) 1705 { 1706 return parse_events__modifier_event(list, event_mod, true); 1707 } 1708 1709 /* 1710 * Check if the two uncore PMUs are from the same uncore block 1711 * The format of the uncore PMU name is uncore_#blockname_#pmuidx 1712 */ 1713 static bool is_same_uncore_block(const char *pmu_name_a, const char *pmu_name_b) 1714 { 1715 char *end_a, *end_b; 1716 1717 end_a = strrchr(pmu_name_a, '_'); 1718 end_b = strrchr(pmu_name_b, '_'); 1719 1720 if (!end_a || !end_b) 1721 return false; 1722 1723 if ((end_a - pmu_name_a) != (end_b - pmu_name_b)) 1724 return false; 1725 1726 return (strncmp(pmu_name_a, pmu_name_b, end_a - pmu_name_a) == 0); 1727 } 1728 1729 static int 1730 parse_events__set_leader_for_uncore_aliase(char *name, struct list_head *list, 1731 struct parse_events_state *parse_state) 1732 { 1733 struct evsel *evsel, *leader; 1734 uintptr_t *leaders; 1735 bool is_leader = true; 1736 int i, nr_pmu = 0, total_members, ret = 0; 1737 1738 leader = list_first_entry(list, struct evsel, core.node); 1739 evsel = list_last_entry(list, struct evsel, core.node); 1740 total_members = evsel->core.idx - leader->core.idx + 1; 1741 1742 leaders = calloc(total_members, sizeof(uintptr_t)); 1743 if (WARN_ON(!leaders)) 1744 return 0; 1745 1746 /* 1747 * Going through the whole group and doing sanity check. 1748 * All members must use alias, and be from the same uncore block. 1749 * Also, storing the leader events in an array. 1750 */ 1751 __evlist__for_each_entry(list, evsel) { 1752 1753 /* Only split the uncore group which members use alias */ 1754 if (!evsel->use_uncore_alias) 1755 goto out; 1756 1757 /* The events must be from the same uncore block */ 1758 if (!is_same_uncore_block(leader->pmu_name, evsel->pmu_name)) 1759 goto out; 1760 1761 if (!is_leader) 1762 continue; 1763 /* 1764 * If the event's PMU name starts to repeat, it must be a new 1765 * event. That can be used to distinguish the leader from 1766 * other members, even they have the same event name. 1767 */ 1768 if ((leader != evsel) && 1769 !strcmp(leader->pmu_name, evsel->pmu_name)) { 1770 is_leader = false; 1771 continue; 1772 } 1773 1774 /* Store the leader event for each PMU */ 1775 leaders[nr_pmu++] = (uintptr_t) evsel; 1776 } 1777 1778 /* only one event alias */ 1779 if (nr_pmu == total_members) { 1780 parse_state->nr_groups--; 1781 goto handled; 1782 } 1783 1784 /* 1785 * An uncore event alias is a joint name which means the same event 1786 * runs on all PMUs of a block. 1787 * Perf doesn't support mixed events from different PMUs in the same 1788 * group. The big group has to be split into multiple small groups 1789 * which only include the events from the same PMU. 1790 * 1791 * Here the uncore event aliases must be from the same uncore block. 1792 * The number of PMUs must be same for each alias. The number of new 1793 * small groups equals to the number of PMUs. 1794 * Setting the leader event for corresponding members in each group. 1795 */ 1796 i = 0; 1797 __evlist__for_each_entry(list, evsel) { 1798 if (i >= nr_pmu) 1799 i = 0; 1800 evsel__set_leader(evsel, (struct evsel *) leaders[i++]); 1801 } 1802 1803 /* The number of members and group name are same for each group */ 1804 for (i = 0; i < nr_pmu; i++) { 1805 evsel = (struct evsel *) leaders[i]; 1806 evsel->core.nr_members = total_members / nr_pmu; 1807 evsel->group_name = name ? strdup(name) : NULL; 1808 } 1809 1810 /* Take the new small groups into account */ 1811 parse_state->nr_groups += nr_pmu - 1; 1812 1813 handled: 1814 ret = 1; 1815 out: 1816 free(leaders); 1817 return ret; 1818 } 1819 1820 void parse_events__set_leader(char *name, struct list_head *list, 1821 struct parse_events_state *parse_state) 1822 { 1823 struct evsel *leader; 1824 1825 if (list_empty(list)) { 1826 WARN_ONCE(true, "WARNING: failed to set leader: empty list"); 1827 return; 1828 } 1829 1830 if (parse_events__set_leader_for_uncore_aliase(name, list, parse_state)) 1831 return; 1832 1833 __perf_evlist__set_leader(list); 1834 leader = list_entry(list->next, struct evsel, core.node); 1835 leader->group_name = name ? strdup(name) : NULL; 1836 } 1837 1838 /* list_event is assumed to point to malloc'ed memory */ 1839 void parse_events_update_lists(struct list_head *list_event, 1840 struct list_head *list_all) 1841 { 1842 /* 1843 * Called for single event definition. Update the 1844 * 'all event' list, and reinit the 'single event' 1845 * list, for next event definition. 1846 */ 1847 list_splice_tail(list_event, list_all); 1848 free(list_event); 1849 } 1850 1851 struct event_modifier { 1852 int eu; 1853 int ek; 1854 int eh; 1855 int eH; 1856 int eG; 1857 int eI; 1858 int precise; 1859 int precise_max; 1860 int exclude_GH; 1861 int sample_read; 1862 int pinned; 1863 int weak; 1864 int exclusive; 1865 int bpf_counter; 1866 }; 1867 1868 static int get_event_modifier(struct event_modifier *mod, char *str, 1869 struct evsel *evsel) 1870 { 1871 int eu = evsel ? evsel->core.attr.exclude_user : 0; 1872 int ek = evsel ? evsel->core.attr.exclude_kernel : 0; 1873 int eh = evsel ? evsel->core.attr.exclude_hv : 0; 1874 int eH = evsel ? evsel->core.attr.exclude_host : 0; 1875 int eG = evsel ? evsel->core.attr.exclude_guest : 0; 1876 int eI = evsel ? evsel->core.attr.exclude_idle : 0; 1877 int precise = evsel ? evsel->core.attr.precise_ip : 0; 1878 int precise_max = 0; 1879 int sample_read = 0; 1880 int pinned = evsel ? evsel->core.attr.pinned : 0; 1881 int exclusive = evsel ? evsel->core.attr.exclusive : 0; 1882 1883 int exclude = eu | ek | eh; 1884 int exclude_GH = evsel ? evsel->exclude_GH : 0; 1885 int weak = 0; 1886 int bpf_counter = 0; 1887 1888 memset(mod, 0, sizeof(*mod)); 1889 1890 while (*str) { 1891 if (*str == 'u') { 1892 if (!exclude) 1893 exclude = eu = ek = eh = 1; 1894 if (!exclude_GH && !perf_guest) 1895 eG = 1; 1896 eu = 0; 1897 } else if (*str == 'k') { 1898 if (!exclude) 1899 exclude = eu = ek = eh = 1; 1900 ek = 0; 1901 } else if (*str == 'h') { 1902 if (!exclude) 1903 exclude = eu = ek = eh = 1; 1904 eh = 0; 1905 } else if (*str == 'G') { 1906 if (!exclude_GH) 1907 exclude_GH = eG = eH = 1; 1908 eG = 0; 1909 } else if (*str == 'H') { 1910 if (!exclude_GH) 1911 exclude_GH = eG = eH = 1; 1912 eH = 0; 1913 } else if (*str == 'I') { 1914 eI = 1; 1915 } else if (*str == 'p') { 1916 precise++; 1917 /* use of precise requires exclude_guest */ 1918 if (!exclude_GH) 1919 eG = 1; 1920 } else if (*str == 'P') { 1921 precise_max = 1; 1922 } else if (*str == 'S') { 1923 sample_read = 1; 1924 } else if (*str == 'D') { 1925 pinned = 1; 1926 } else if (*str == 'e') { 1927 exclusive = 1; 1928 } else if (*str == 'W') { 1929 weak = 1; 1930 } else if (*str == 'b') { 1931 bpf_counter = 1; 1932 } else 1933 break; 1934 1935 ++str; 1936 } 1937 1938 /* 1939 * precise ip: 1940 * 1941 * 0 - SAMPLE_IP can have arbitrary skid 1942 * 1 - SAMPLE_IP must have constant skid 1943 * 2 - SAMPLE_IP requested to have 0 skid 1944 * 3 - SAMPLE_IP must have 0 skid 1945 * 1946 * See also PERF_RECORD_MISC_EXACT_IP 1947 */ 1948 if (precise > 3) 1949 return -EINVAL; 1950 1951 mod->eu = eu; 1952 mod->ek = ek; 1953 mod->eh = eh; 1954 mod->eH = eH; 1955 mod->eG = eG; 1956 mod->eI = eI; 1957 mod->precise = precise; 1958 mod->precise_max = precise_max; 1959 mod->exclude_GH = exclude_GH; 1960 mod->sample_read = sample_read; 1961 mod->pinned = pinned; 1962 mod->weak = weak; 1963 mod->bpf_counter = bpf_counter; 1964 mod->exclusive = exclusive; 1965 1966 return 0; 1967 } 1968 1969 /* 1970 * Basic modifier sanity check to validate it contains only one 1971 * instance of any modifier (apart from 'p') present. 1972 */ 1973 static int check_modifier(char *str) 1974 { 1975 char *p = str; 1976 1977 /* The sizeof includes 0 byte as well. */ 1978 if (strlen(str) > (sizeof("ukhGHpppPSDIWeb") - 1)) 1979 return -1; 1980 1981 while (*p) { 1982 if (*p != 'p' && strchr(p + 1, *p)) 1983 return -1; 1984 p++; 1985 } 1986 1987 return 0; 1988 } 1989 1990 int parse_events__modifier_event(struct list_head *list, char *str, bool add) 1991 { 1992 struct evsel *evsel; 1993 struct event_modifier mod; 1994 1995 if (str == NULL) 1996 return 0; 1997 1998 if (check_modifier(str)) 1999 return -EINVAL; 2000 2001 if (!add && get_event_modifier(&mod, str, NULL)) 2002 return -EINVAL; 2003 2004 __evlist__for_each_entry(list, evsel) { 2005 if (add && get_event_modifier(&mod, str, evsel)) 2006 return -EINVAL; 2007 2008 evsel->core.attr.exclude_user = mod.eu; 2009 evsel->core.attr.exclude_kernel = mod.ek; 2010 evsel->core.attr.exclude_hv = mod.eh; 2011 evsel->core.attr.precise_ip = mod.precise; 2012 evsel->core.attr.exclude_host = mod.eH; 2013 evsel->core.attr.exclude_guest = mod.eG; 2014 evsel->core.attr.exclude_idle = mod.eI; 2015 evsel->exclude_GH = mod.exclude_GH; 2016 evsel->sample_read = mod.sample_read; 2017 evsel->precise_max = mod.precise_max; 2018 evsel->weak_group = mod.weak; 2019 evsel->bpf_counter = mod.bpf_counter; 2020 2021 if (evsel__is_group_leader(evsel)) { 2022 evsel->core.attr.pinned = mod.pinned; 2023 evsel->core.attr.exclusive = mod.exclusive; 2024 } 2025 } 2026 2027 return 0; 2028 } 2029 2030 int parse_events_name(struct list_head *list, char *name) 2031 { 2032 struct evsel *evsel; 2033 2034 __evlist__for_each_entry(list, evsel) { 2035 if (!evsel->name) 2036 evsel->name = strdup(name); 2037 } 2038 2039 return 0; 2040 } 2041 2042 static int 2043 comp_pmu(const void *p1, const void *p2) 2044 { 2045 struct perf_pmu_event_symbol *pmu1 = (struct perf_pmu_event_symbol *) p1; 2046 struct perf_pmu_event_symbol *pmu2 = (struct perf_pmu_event_symbol *) p2; 2047 2048 return strcasecmp(pmu1->symbol, pmu2->symbol); 2049 } 2050 2051 static void perf_pmu__parse_cleanup(void) 2052 { 2053 if (perf_pmu_events_list_num > 0) { 2054 struct perf_pmu_event_symbol *p; 2055 int i; 2056 2057 for (i = 0; i < perf_pmu_events_list_num; i++) { 2058 p = perf_pmu_events_list + i; 2059 zfree(&p->symbol); 2060 } 2061 zfree(&perf_pmu_events_list); 2062 perf_pmu_events_list_num = 0; 2063 } 2064 } 2065 2066 #define SET_SYMBOL(str, stype) \ 2067 do { \ 2068 p->symbol = str; \ 2069 if (!p->symbol) \ 2070 goto err; \ 2071 p->type = stype; \ 2072 } while (0) 2073 2074 /* 2075 * Read the pmu events list from sysfs 2076 * Save it into perf_pmu_events_list 2077 */ 2078 static void perf_pmu__parse_init(void) 2079 { 2080 2081 struct perf_pmu *pmu = NULL; 2082 struct perf_pmu_alias *alias; 2083 int len = 0; 2084 2085 pmu = NULL; 2086 while ((pmu = perf_pmu__scan(pmu)) != NULL) { 2087 list_for_each_entry(alias, &pmu->aliases, list) { 2088 if (strchr(alias->name, '-')) 2089 len++; 2090 len++; 2091 } 2092 } 2093 2094 if (len == 0) { 2095 perf_pmu_events_list_num = -1; 2096 return; 2097 } 2098 perf_pmu_events_list = malloc(sizeof(struct perf_pmu_event_symbol) * len); 2099 if (!perf_pmu_events_list) 2100 return; 2101 perf_pmu_events_list_num = len; 2102 2103 len = 0; 2104 pmu = NULL; 2105 while ((pmu = perf_pmu__scan(pmu)) != NULL) { 2106 list_for_each_entry(alias, &pmu->aliases, list) { 2107 struct perf_pmu_event_symbol *p = perf_pmu_events_list + len; 2108 char *tmp = strchr(alias->name, '-'); 2109 2110 if (tmp != NULL) { 2111 SET_SYMBOL(strndup(alias->name, tmp - alias->name), 2112 PMU_EVENT_SYMBOL_PREFIX); 2113 p++; 2114 SET_SYMBOL(strdup(++tmp), PMU_EVENT_SYMBOL_SUFFIX); 2115 len += 2; 2116 } else { 2117 SET_SYMBOL(strdup(alias->name), PMU_EVENT_SYMBOL); 2118 len++; 2119 } 2120 } 2121 } 2122 qsort(perf_pmu_events_list, len, 2123 sizeof(struct perf_pmu_event_symbol), comp_pmu); 2124 2125 return; 2126 err: 2127 perf_pmu__parse_cleanup(); 2128 } 2129 2130 /* 2131 * This function injects special term in 2132 * perf_pmu_events_list so the test code 2133 * can check on this functionality. 2134 */ 2135 int perf_pmu__test_parse_init(void) 2136 { 2137 struct perf_pmu_event_symbol *list; 2138 2139 list = malloc(sizeof(*list) * 1); 2140 if (!list) 2141 return -ENOMEM; 2142 2143 list->type = PMU_EVENT_SYMBOL; 2144 list->symbol = strdup("read"); 2145 2146 if (!list->symbol) { 2147 free(list); 2148 return -ENOMEM; 2149 } 2150 2151 perf_pmu_events_list = list; 2152 perf_pmu_events_list_num = 1; 2153 return 0; 2154 } 2155 2156 enum perf_pmu_event_symbol_type 2157 perf_pmu__parse_check(const char *name) 2158 { 2159 struct perf_pmu_event_symbol p, *r; 2160 2161 /* scan kernel pmu events from sysfs if needed */ 2162 if (perf_pmu_events_list_num == 0) 2163 perf_pmu__parse_init(); 2164 /* 2165 * name "cpu" could be prefix of cpu-cycles or cpu// events. 2166 * cpu-cycles has been handled by hardcode. 2167 * So it must be cpu// events, not kernel pmu event. 2168 */ 2169 if ((perf_pmu_events_list_num <= 0) || !strcmp(name, "cpu")) 2170 return PMU_EVENT_SYMBOL_ERR; 2171 2172 p.symbol = strdup(name); 2173 r = bsearch(&p, perf_pmu_events_list, 2174 (size_t) perf_pmu_events_list_num, 2175 sizeof(struct perf_pmu_event_symbol), comp_pmu); 2176 zfree(&p.symbol); 2177 return r ? r->type : PMU_EVENT_SYMBOL_ERR; 2178 } 2179 2180 static int parse_events__scanner(const char *str, 2181 struct parse_events_state *parse_state) 2182 { 2183 YY_BUFFER_STATE buffer; 2184 void *scanner; 2185 int ret; 2186 2187 ret = parse_events_lex_init_extra(parse_state, &scanner); 2188 if (ret) 2189 return ret; 2190 2191 buffer = parse_events__scan_string(str, scanner); 2192 2193 #ifdef PARSER_DEBUG 2194 parse_events_debug = 1; 2195 parse_events_set_debug(1, scanner); 2196 #endif 2197 ret = parse_events_parse(parse_state, scanner); 2198 2199 parse_events__flush_buffer(buffer, scanner); 2200 parse_events__delete_buffer(buffer, scanner); 2201 parse_events_lex_destroy(scanner); 2202 return ret; 2203 } 2204 2205 /* 2206 * parse event config string, return a list of event terms. 2207 */ 2208 int parse_events_terms(struct list_head *terms, const char *str) 2209 { 2210 struct parse_events_state parse_state = { 2211 .terms = NULL, 2212 .stoken = PE_START_TERMS, 2213 }; 2214 int ret; 2215 2216 ret = parse_events__scanner(str, &parse_state); 2217 perf_pmu__parse_cleanup(); 2218 2219 if (!ret) { 2220 list_splice(parse_state.terms, terms); 2221 zfree(&parse_state.terms); 2222 return 0; 2223 } 2224 2225 parse_events_terms__delete(parse_state.terms); 2226 return ret; 2227 } 2228 2229 static int parse_events__with_hybrid_pmu(struct parse_events_state *parse_state, 2230 const char *str, char *pmu_name, 2231 struct list_head *list) 2232 { 2233 struct parse_events_state ps = { 2234 .list = LIST_HEAD_INIT(ps.list), 2235 .stoken = PE_START_EVENTS, 2236 .hybrid_pmu_name = pmu_name, 2237 .idx = parse_state->idx, 2238 }; 2239 int ret; 2240 2241 ret = parse_events__scanner(str, &ps); 2242 perf_pmu__parse_cleanup(); 2243 2244 if (!ret) { 2245 if (!list_empty(&ps.list)) { 2246 list_splice(&ps.list, list); 2247 parse_state->idx = ps.idx; 2248 return 0; 2249 } else 2250 return -1; 2251 } 2252 2253 return ret; 2254 } 2255 2256 int __parse_events(struct evlist *evlist, const char *str, 2257 struct parse_events_error *err, struct perf_pmu *fake_pmu) 2258 { 2259 struct parse_events_state parse_state = { 2260 .list = LIST_HEAD_INIT(parse_state.list), 2261 .idx = evlist->core.nr_entries, 2262 .error = err, 2263 .evlist = evlist, 2264 .stoken = PE_START_EVENTS, 2265 .fake_pmu = fake_pmu, 2266 }; 2267 int ret; 2268 2269 ret = parse_events__scanner(str, &parse_state); 2270 perf_pmu__parse_cleanup(); 2271 2272 if (!ret && list_empty(&parse_state.list)) { 2273 WARN_ONCE(true, "WARNING: event parser found nothing\n"); 2274 return -1; 2275 } 2276 2277 /* 2278 * Add list to the evlist even with errors to allow callers to clean up. 2279 */ 2280 evlist__splice_list_tail(evlist, &parse_state.list); 2281 2282 if (!ret) { 2283 struct evsel *last; 2284 2285 evlist->core.nr_groups += parse_state.nr_groups; 2286 last = evlist__last(evlist); 2287 last->cmdline_group_boundary = true; 2288 2289 return 0; 2290 } 2291 2292 /* 2293 * There are 2 users - builtin-record and builtin-test objects. 2294 * Both call evlist__delete in case of error, so we dont 2295 * need to bother. 2296 */ 2297 return ret; 2298 } 2299 2300 #define MAX_WIDTH 1000 2301 static int get_term_width(void) 2302 { 2303 struct winsize ws; 2304 2305 get_term_dimensions(&ws); 2306 return ws.ws_col > MAX_WIDTH ? MAX_WIDTH : ws.ws_col; 2307 } 2308 2309 static void __parse_events_print_error(int err_idx, const char *err_str, 2310 const char *err_help, const char *event) 2311 { 2312 const char *str = "invalid or unsupported event: "; 2313 char _buf[MAX_WIDTH]; 2314 char *buf = (char *) event; 2315 int idx = 0; 2316 if (err_str) { 2317 /* -2 for extra '' in the final fprintf */ 2318 int width = get_term_width() - 2; 2319 int len_event = strlen(event); 2320 int len_str, max_len, cut = 0; 2321 2322 /* 2323 * Maximum error index indent, we will cut 2324 * the event string if it's bigger. 2325 */ 2326 int max_err_idx = 13; 2327 2328 /* 2329 * Let's be specific with the message when 2330 * we have the precise error. 2331 */ 2332 str = "event syntax error: "; 2333 len_str = strlen(str); 2334 max_len = width - len_str; 2335 2336 buf = _buf; 2337 2338 /* We're cutting from the beginning. */ 2339 if (err_idx > max_err_idx) 2340 cut = err_idx - max_err_idx; 2341 2342 strncpy(buf, event + cut, max_len); 2343 2344 /* Mark cut parts with '..' on both sides. */ 2345 if (cut) 2346 buf[0] = buf[1] = '.'; 2347 2348 if ((len_event - cut) > max_len) { 2349 buf[max_len - 1] = buf[max_len - 2] = '.'; 2350 buf[max_len] = 0; 2351 } 2352 2353 idx = len_str + err_idx - cut; 2354 } 2355 2356 fprintf(stderr, "%s'%s'\n", str, buf); 2357 if (idx) { 2358 fprintf(stderr, "%*s\\___ %s\n", idx + 1, "", err_str); 2359 if (err_help) 2360 fprintf(stderr, "\n%s\n", err_help); 2361 } 2362 } 2363 2364 void parse_events_print_error(struct parse_events_error *err, 2365 const char *event) 2366 { 2367 if (!err->num_errors) 2368 return; 2369 2370 __parse_events_print_error(err->idx, err->str, err->help, event); 2371 zfree(&err->str); 2372 zfree(&err->help); 2373 2374 if (err->num_errors > 1) { 2375 fputs("\nInitial error:\n", stderr); 2376 __parse_events_print_error(err->first_idx, err->first_str, 2377 err->first_help, event); 2378 zfree(&err->first_str); 2379 zfree(&err->first_help); 2380 } 2381 } 2382 2383 #undef MAX_WIDTH 2384 2385 int parse_events_option(const struct option *opt, const char *str, 2386 int unset __maybe_unused) 2387 { 2388 struct evlist *evlist = *(struct evlist **)opt->value; 2389 struct parse_events_error err; 2390 int ret; 2391 2392 bzero(&err, sizeof(err)); 2393 ret = parse_events(evlist, str, &err); 2394 2395 if (ret) { 2396 parse_events_print_error(&err, str); 2397 fprintf(stderr, "Run 'perf list' for a list of valid events\n"); 2398 } 2399 2400 return ret; 2401 } 2402 2403 int parse_events_option_new_evlist(const struct option *opt, const char *str, int unset) 2404 { 2405 struct evlist **evlistp = opt->value; 2406 int ret; 2407 2408 if (*evlistp == NULL) { 2409 *evlistp = evlist__new(); 2410 2411 if (*evlistp == NULL) { 2412 fprintf(stderr, "Not enough memory to create evlist\n"); 2413 return -1; 2414 } 2415 } 2416 2417 ret = parse_events_option(opt, str, unset); 2418 if (ret) { 2419 evlist__delete(*evlistp); 2420 *evlistp = NULL; 2421 } 2422 2423 return ret; 2424 } 2425 2426 static int 2427 foreach_evsel_in_last_glob(struct evlist *evlist, 2428 int (*func)(struct evsel *evsel, 2429 const void *arg), 2430 const void *arg) 2431 { 2432 struct evsel *last = NULL; 2433 int err; 2434 2435 /* 2436 * Don't return when list_empty, give func a chance to report 2437 * error when it found last == NULL. 2438 * 2439 * So no need to WARN here, let *func do this. 2440 */ 2441 if (evlist->core.nr_entries > 0) 2442 last = evlist__last(evlist); 2443 2444 do { 2445 err = (*func)(last, arg); 2446 if (err) 2447 return -1; 2448 if (!last) 2449 return 0; 2450 2451 if (last->core.node.prev == &evlist->core.entries) 2452 return 0; 2453 last = list_entry(last->core.node.prev, struct evsel, core.node); 2454 } while (!last->cmdline_group_boundary); 2455 2456 return 0; 2457 } 2458 2459 static int set_filter(struct evsel *evsel, const void *arg) 2460 { 2461 const char *str = arg; 2462 bool found = false; 2463 int nr_addr_filters = 0; 2464 struct perf_pmu *pmu = NULL; 2465 2466 if (evsel == NULL) { 2467 fprintf(stderr, 2468 "--filter option should follow a -e tracepoint or HW tracer option\n"); 2469 return -1; 2470 } 2471 2472 if (evsel->core.attr.type == PERF_TYPE_TRACEPOINT) { 2473 if (evsel__append_tp_filter(evsel, str) < 0) { 2474 fprintf(stderr, 2475 "not enough memory to hold filter string\n"); 2476 return -1; 2477 } 2478 2479 return 0; 2480 } 2481 2482 while ((pmu = perf_pmu__scan(pmu)) != NULL) 2483 if (pmu->type == evsel->core.attr.type) { 2484 found = true; 2485 break; 2486 } 2487 2488 if (found) 2489 perf_pmu__scan_file(pmu, "nr_addr_filters", 2490 "%d", &nr_addr_filters); 2491 2492 if (!nr_addr_filters) { 2493 fprintf(stderr, 2494 "This CPU does not support address filtering\n"); 2495 return -1; 2496 } 2497 2498 if (evsel__append_addr_filter(evsel, str) < 0) { 2499 fprintf(stderr, 2500 "not enough memory to hold filter string\n"); 2501 return -1; 2502 } 2503 2504 return 0; 2505 } 2506 2507 int parse_filter(const struct option *opt, const char *str, 2508 int unset __maybe_unused) 2509 { 2510 struct evlist *evlist = *(struct evlist **)opt->value; 2511 2512 return foreach_evsel_in_last_glob(evlist, set_filter, 2513 (const void *)str); 2514 } 2515 2516 static int add_exclude_perf_filter(struct evsel *evsel, 2517 const void *arg __maybe_unused) 2518 { 2519 char new_filter[64]; 2520 2521 if (evsel == NULL || evsel->core.attr.type != PERF_TYPE_TRACEPOINT) { 2522 fprintf(stderr, 2523 "--exclude-perf option should follow a -e tracepoint option\n"); 2524 return -1; 2525 } 2526 2527 snprintf(new_filter, sizeof(new_filter), "common_pid != %d", getpid()); 2528 2529 if (evsel__append_tp_filter(evsel, new_filter) < 0) { 2530 fprintf(stderr, 2531 "not enough memory to hold filter string\n"); 2532 return -1; 2533 } 2534 2535 return 0; 2536 } 2537 2538 int exclude_perf(const struct option *opt, 2539 const char *arg __maybe_unused, 2540 int unset __maybe_unused) 2541 { 2542 struct evlist *evlist = *(struct evlist **)opt->value; 2543 2544 return foreach_evsel_in_last_glob(evlist, add_exclude_perf_filter, 2545 NULL); 2546 } 2547 2548 static const char * const event_type_descriptors[] = { 2549 "Hardware event", 2550 "Software event", 2551 "Tracepoint event", 2552 "Hardware cache event", 2553 "Raw hardware event descriptor", 2554 "Hardware breakpoint", 2555 }; 2556 2557 static int cmp_string(const void *a, const void *b) 2558 { 2559 const char * const *as = a; 2560 const char * const *bs = b; 2561 2562 return strcmp(*as, *bs); 2563 } 2564 2565 /* 2566 * Print the events from <debugfs_mount_point>/tracing/events 2567 */ 2568 2569 void print_tracepoint_events(const char *subsys_glob, const char *event_glob, 2570 bool name_only) 2571 { 2572 DIR *sys_dir, *evt_dir; 2573 struct dirent *sys_dirent, *evt_dirent; 2574 char evt_path[MAXPATHLEN]; 2575 char *dir_path; 2576 char **evt_list = NULL; 2577 unsigned int evt_i = 0, evt_num = 0; 2578 bool evt_num_known = false; 2579 2580 restart: 2581 sys_dir = tracing_events__opendir(); 2582 if (!sys_dir) 2583 return; 2584 2585 if (evt_num_known) { 2586 evt_list = zalloc(sizeof(char *) * evt_num); 2587 if (!evt_list) 2588 goto out_close_sys_dir; 2589 } 2590 2591 for_each_subsystem(sys_dir, sys_dirent) { 2592 if (subsys_glob != NULL && 2593 !strglobmatch(sys_dirent->d_name, subsys_glob)) 2594 continue; 2595 2596 dir_path = get_events_file(sys_dirent->d_name); 2597 if (!dir_path) 2598 continue; 2599 evt_dir = opendir(dir_path); 2600 if (!evt_dir) 2601 goto next; 2602 2603 for_each_event(dir_path, evt_dir, evt_dirent) { 2604 if (event_glob != NULL && 2605 !strglobmatch(evt_dirent->d_name, event_glob)) 2606 continue; 2607 2608 if (!evt_num_known) { 2609 evt_num++; 2610 continue; 2611 } 2612 2613 snprintf(evt_path, MAXPATHLEN, "%s:%s", 2614 sys_dirent->d_name, evt_dirent->d_name); 2615 2616 evt_list[evt_i] = strdup(evt_path); 2617 if (evt_list[evt_i] == NULL) { 2618 put_events_file(dir_path); 2619 goto out_close_evt_dir; 2620 } 2621 evt_i++; 2622 } 2623 closedir(evt_dir); 2624 next: 2625 put_events_file(dir_path); 2626 } 2627 closedir(sys_dir); 2628 2629 if (!evt_num_known) { 2630 evt_num_known = true; 2631 goto restart; 2632 } 2633 qsort(evt_list, evt_num, sizeof(char *), cmp_string); 2634 evt_i = 0; 2635 while (evt_i < evt_num) { 2636 if (name_only) { 2637 printf("%s ", evt_list[evt_i++]); 2638 continue; 2639 } 2640 printf(" %-50s [%s]\n", evt_list[evt_i++], 2641 event_type_descriptors[PERF_TYPE_TRACEPOINT]); 2642 } 2643 if (evt_num && pager_in_use()) 2644 printf("\n"); 2645 2646 out_free: 2647 evt_num = evt_i; 2648 for (evt_i = 0; evt_i < evt_num; evt_i++) 2649 zfree(&evt_list[evt_i]); 2650 zfree(&evt_list); 2651 return; 2652 2653 out_close_evt_dir: 2654 closedir(evt_dir); 2655 out_close_sys_dir: 2656 closedir(sys_dir); 2657 2658 printf("FATAL: not enough memory to print %s\n", 2659 event_type_descriptors[PERF_TYPE_TRACEPOINT]); 2660 if (evt_list) 2661 goto out_free; 2662 } 2663 2664 /* 2665 * Check whether event is in <debugfs_mount_point>/tracing/events 2666 */ 2667 2668 int is_valid_tracepoint(const char *event_string) 2669 { 2670 DIR *sys_dir, *evt_dir; 2671 struct dirent *sys_dirent, *evt_dirent; 2672 char evt_path[MAXPATHLEN]; 2673 char *dir_path; 2674 2675 sys_dir = tracing_events__opendir(); 2676 if (!sys_dir) 2677 return 0; 2678 2679 for_each_subsystem(sys_dir, sys_dirent) { 2680 dir_path = get_events_file(sys_dirent->d_name); 2681 if (!dir_path) 2682 continue; 2683 evt_dir = opendir(dir_path); 2684 if (!evt_dir) 2685 goto next; 2686 2687 for_each_event(dir_path, evt_dir, evt_dirent) { 2688 snprintf(evt_path, MAXPATHLEN, "%s:%s", 2689 sys_dirent->d_name, evt_dirent->d_name); 2690 if (!strcmp(evt_path, event_string)) { 2691 closedir(evt_dir); 2692 closedir(sys_dir); 2693 return 1; 2694 } 2695 } 2696 closedir(evt_dir); 2697 next: 2698 put_events_file(dir_path); 2699 } 2700 closedir(sys_dir); 2701 return 0; 2702 } 2703 2704 static bool is_event_supported(u8 type, u64 config) 2705 { 2706 bool ret = true; 2707 int open_return; 2708 struct evsel *evsel; 2709 struct perf_event_attr attr = { 2710 .type = type, 2711 .config = config, 2712 .disabled = 1, 2713 }; 2714 struct perf_thread_map *tmap = thread_map__new_by_tid(0); 2715 2716 if (tmap == NULL) 2717 return false; 2718 2719 evsel = evsel__new(&attr); 2720 if (evsel) { 2721 open_return = evsel__open(evsel, NULL, tmap); 2722 ret = open_return >= 0; 2723 2724 if (open_return == -EACCES) { 2725 /* 2726 * This happens if the paranoid value 2727 * /proc/sys/kernel/perf_event_paranoid is set to 2 2728 * Re-run with exclude_kernel set; we don't do that 2729 * by default as some ARM machines do not support it. 2730 * 2731 */ 2732 evsel->core.attr.exclude_kernel = 1; 2733 ret = evsel__open(evsel, NULL, tmap) >= 0; 2734 } 2735 evsel__delete(evsel); 2736 } 2737 2738 perf_thread_map__put(tmap); 2739 return ret; 2740 } 2741 2742 void print_sdt_events(const char *subsys_glob, const char *event_glob, 2743 bool name_only) 2744 { 2745 struct probe_cache *pcache; 2746 struct probe_cache_entry *ent; 2747 struct strlist *bidlist, *sdtlist; 2748 struct strlist_config cfg = {.dont_dupstr = true}; 2749 struct str_node *nd, *nd2; 2750 char *buf, *path, *ptr = NULL; 2751 bool show_detail = false; 2752 int ret; 2753 2754 sdtlist = strlist__new(NULL, &cfg); 2755 if (!sdtlist) { 2756 pr_debug("Failed to allocate new strlist for SDT\n"); 2757 return; 2758 } 2759 bidlist = build_id_cache__list_all(true); 2760 if (!bidlist) { 2761 pr_debug("Failed to get buildids: %d\n", errno); 2762 return; 2763 } 2764 strlist__for_each_entry(nd, bidlist) { 2765 pcache = probe_cache__new(nd->s, NULL); 2766 if (!pcache) 2767 continue; 2768 list_for_each_entry(ent, &pcache->entries, node) { 2769 if (!ent->sdt) 2770 continue; 2771 if (subsys_glob && 2772 !strglobmatch(ent->pev.group, subsys_glob)) 2773 continue; 2774 if (event_glob && 2775 !strglobmatch(ent->pev.event, event_glob)) 2776 continue; 2777 ret = asprintf(&buf, "%s:%s@%s", ent->pev.group, 2778 ent->pev.event, nd->s); 2779 if (ret > 0) 2780 strlist__add(sdtlist, buf); 2781 } 2782 probe_cache__delete(pcache); 2783 } 2784 strlist__delete(bidlist); 2785 2786 strlist__for_each_entry(nd, sdtlist) { 2787 buf = strchr(nd->s, '@'); 2788 if (buf) 2789 *(buf++) = '\0'; 2790 if (name_only) { 2791 printf("%s ", nd->s); 2792 continue; 2793 } 2794 nd2 = strlist__next(nd); 2795 if (nd2) { 2796 ptr = strchr(nd2->s, '@'); 2797 if (ptr) 2798 *ptr = '\0'; 2799 if (strcmp(nd->s, nd2->s) == 0) 2800 show_detail = true; 2801 } 2802 if (show_detail) { 2803 path = build_id_cache__origname(buf); 2804 ret = asprintf(&buf, "%s@%s(%.12s)", nd->s, path, buf); 2805 if (ret > 0) { 2806 printf(" %-50s [%s]\n", buf, "SDT event"); 2807 free(buf); 2808 } 2809 free(path); 2810 } else 2811 printf(" %-50s [%s]\n", nd->s, "SDT event"); 2812 if (nd2) { 2813 if (strcmp(nd->s, nd2->s) != 0) 2814 show_detail = false; 2815 if (ptr) 2816 *ptr = '@'; 2817 } 2818 } 2819 strlist__delete(sdtlist); 2820 } 2821 2822 int print_hwcache_events(const char *event_glob, bool name_only) 2823 { 2824 unsigned int type, op, i, evt_i = 0, evt_num = 0, npmus = 0; 2825 char name[64], new_name[128]; 2826 char **evt_list = NULL, **evt_pmus = NULL; 2827 bool evt_num_known = false; 2828 struct perf_pmu *pmu = NULL; 2829 2830 if (perf_pmu__has_hybrid()) { 2831 npmus = perf_pmu__hybrid_pmu_num(); 2832 evt_pmus = zalloc(sizeof(char *) * npmus); 2833 if (!evt_pmus) 2834 goto out_enomem; 2835 } 2836 2837 restart: 2838 if (evt_num_known) { 2839 evt_list = zalloc(sizeof(char *) * evt_num); 2840 if (!evt_list) 2841 goto out_enomem; 2842 } 2843 2844 for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) { 2845 for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) { 2846 /* skip invalid cache type */ 2847 if (!evsel__is_cache_op_valid(type, op)) 2848 continue; 2849 2850 for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) { 2851 unsigned int hybrid_supported = 0, j; 2852 bool supported; 2853 2854 __evsel__hw_cache_type_op_res_name(type, op, i, name, sizeof(name)); 2855 if (event_glob != NULL && !strglobmatch(name, event_glob)) 2856 continue; 2857 2858 if (!perf_pmu__has_hybrid()) { 2859 if (!is_event_supported(PERF_TYPE_HW_CACHE, 2860 type | (op << 8) | (i << 16))) { 2861 continue; 2862 } 2863 } else { 2864 perf_pmu__for_each_hybrid_pmu(pmu) { 2865 if (!evt_num_known) { 2866 evt_num++; 2867 continue; 2868 } 2869 2870 supported = is_event_supported( 2871 PERF_TYPE_HW_CACHE, 2872 type | (op << 8) | (i << 16) | 2873 ((__u64)pmu->type << PERF_PMU_TYPE_SHIFT)); 2874 if (supported) { 2875 snprintf(new_name, sizeof(new_name), "%s/%s/", 2876 pmu->name, name); 2877 evt_pmus[hybrid_supported] = strdup(new_name); 2878 hybrid_supported++; 2879 } 2880 } 2881 2882 if (hybrid_supported == 0) 2883 continue; 2884 } 2885 2886 if (!evt_num_known) { 2887 evt_num++; 2888 continue; 2889 } 2890 2891 if ((hybrid_supported == 0) || 2892 (hybrid_supported == npmus)) { 2893 evt_list[evt_i] = strdup(name); 2894 if (npmus > 0) { 2895 for (j = 0; j < npmus; j++) 2896 zfree(&evt_pmus[j]); 2897 } 2898 } else { 2899 for (j = 0; j < hybrid_supported; j++) { 2900 evt_list[evt_i++] = evt_pmus[j]; 2901 evt_pmus[j] = NULL; 2902 } 2903 continue; 2904 } 2905 2906 if (evt_list[evt_i] == NULL) 2907 goto out_enomem; 2908 evt_i++; 2909 } 2910 } 2911 } 2912 2913 if (!evt_num_known) { 2914 evt_num_known = true; 2915 goto restart; 2916 } 2917 2918 for (evt_i = 0; evt_i < evt_num; evt_i++) { 2919 if (!evt_list[evt_i]) 2920 break; 2921 } 2922 2923 evt_num = evt_i; 2924 qsort(evt_list, evt_num, sizeof(char *), cmp_string); 2925 evt_i = 0; 2926 while (evt_i < evt_num) { 2927 if (name_only) { 2928 printf("%s ", evt_list[evt_i++]); 2929 continue; 2930 } 2931 printf(" %-50s [%s]\n", evt_list[evt_i++], 2932 event_type_descriptors[PERF_TYPE_HW_CACHE]); 2933 } 2934 if (evt_num && pager_in_use()) 2935 printf("\n"); 2936 2937 out_free: 2938 evt_num = evt_i; 2939 for (evt_i = 0; evt_i < evt_num; evt_i++) 2940 zfree(&evt_list[evt_i]); 2941 zfree(&evt_list); 2942 2943 for (evt_i = 0; evt_i < npmus; evt_i++) 2944 zfree(&evt_pmus[evt_i]); 2945 zfree(&evt_pmus); 2946 return evt_num; 2947 2948 out_enomem: 2949 printf("FATAL: not enough memory to print %s\n", event_type_descriptors[PERF_TYPE_HW_CACHE]); 2950 if (evt_list) 2951 goto out_free; 2952 return evt_num; 2953 } 2954 2955 static void print_tool_event(const char *name, const char *event_glob, 2956 bool name_only) 2957 { 2958 if (event_glob && !strglobmatch(name, event_glob)) 2959 return; 2960 if (name_only) 2961 printf("%s ", name); 2962 else 2963 printf(" %-50s [%s]\n", name, "Tool event"); 2964 2965 } 2966 2967 void print_tool_events(const char *event_glob, bool name_only) 2968 { 2969 print_tool_event("duration_time", event_glob, name_only); 2970 if (pager_in_use()) 2971 printf("\n"); 2972 } 2973 2974 void print_symbol_events(const char *event_glob, unsigned type, 2975 struct event_symbol *syms, unsigned max, 2976 bool name_only) 2977 { 2978 unsigned int i, evt_i = 0, evt_num = 0; 2979 char name[MAX_NAME_LEN]; 2980 char **evt_list = NULL; 2981 bool evt_num_known = false; 2982 2983 restart: 2984 if (evt_num_known) { 2985 evt_list = zalloc(sizeof(char *) * evt_num); 2986 if (!evt_list) 2987 goto out_enomem; 2988 syms -= max; 2989 } 2990 2991 for (i = 0; i < max; i++, syms++) { 2992 /* 2993 * New attr.config still not supported here, the latest 2994 * example was PERF_COUNT_SW_CGROUP_SWITCHES 2995 */ 2996 if (syms->symbol == NULL) 2997 continue; 2998 2999 if (event_glob != NULL && !(strglobmatch(syms->symbol, event_glob) || 3000 (syms->alias && strglobmatch(syms->alias, event_glob)))) 3001 continue; 3002 3003 if (!is_event_supported(type, i)) 3004 continue; 3005 3006 if (!evt_num_known) { 3007 evt_num++; 3008 continue; 3009 } 3010 3011 if (!name_only && strlen(syms->alias)) 3012 snprintf(name, MAX_NAME_LEN, "%s OR %s", syms->symbol, syms->alias); 3013 else 3014 strlcpy(name, syms->symbol, MAX_NAME_LEN); 3015 3016 evt_list[evt_i] = strdup(name); 3017 if (evt_list[evt_i] == NULL) 3018 goto out_enomem; 3019 evt_i++; 3020 } 3021 3022 if (!evt_num_known) { 3023 evt_num_known = true; 3024 goto restart; 3025 } 3026 qsort(evt_list, evt_num, sizeof(char *), cmp_string); 3027 evt_i = 0; 3028 while (evt_i < evt_num) { 3029 if (name_only) { 3030 printf("%s ", evt_list[evt_i++]); 3031 continue; 3032 } 3033 printf(" %-50s [%s]\n", evt_list[evt_i++], event_type_descriptors[type]); 3034 } 3035 if (evt_num && pager_in_use()) 3036 printf("\n"); 3037 3038 out_free: 3039 evt_num = evt_i; 3040 for (evt_i = 0; evt_i < evt_num; evt_i++) 3041 zfree(&evt_list[evt_i]); 3042 zfree(&evt_list); 3043 return; 3044 3045 out_enomem: 3046 printf("FATAL: not enough memory to print %s\n", event_type_descriptors[type]); 3047 if (evt_list) 3048 goto out_free; 3049 } 3050 3051 /* 3052 * Print the help text for the event symbols: 3053 */ 3054 void print_events(const char *event_glob, bool name_only, bool quiet_flag, 3055 bool long_desc, bool details_flag, bool deprecated) 3056 { 3057 print_symbol_events(event_glob, PERF_TYPE_HARDWARE, 3058 event_symbols_hw, PERF_COUNT_HW_MAX, name_only); 3059 3060 print_symbol_events(event_glob, PERF_TYPE_SOFTWARE, 3061 event_symbols_sw, PERF_COUNT_SW_MAX, name_only); 3062 print_tool_events(event_glob, name_only); 3063 3064 print_hwcache_events(event_glob, name_only); 3065 3066 print_pmu_events(event_glob, name_only, quiet_flag, long_desc, 3067 details_flag, deprecated); 3068 3069 if (event_glob != NULL) 3070 return; 3071 3072 if (!name_only) { 3073 printf(" %-50s [%s]\n", 3074 "rNNN", 3075 event_type_descriptors[PERF_TYPE_RAW]); 3076 printf(" %-50s [%s]\n", 3077 "cpu/t1=v1[,t2=v2,t3 ...]/modifier", 3078 event_type_descriptors[PERF_TYPE_RAW]); 3079 if (pager_in_use()) 3080 printf(" (see 'man perf-list' on how to encode it)\n\n"); 3081 3082 printf(" %-50s [%s]\n", 3083 "mem:<addr>[/len][:access]", 3084 event_type_descriptors[PERF_TYPE_BREAKPOINT]); 3085 if (pager_in_use()) 3086 printf("\n"); 3087 } 3088 3089 print_tracepoint_events(NULL, NULL, name_only); 3090 3091 print_sdt_events(NULL, NULL, name_only); 3092 3093 metricgroup__print(true, true, NULL, name_only, details_flag); 3094 3095 print_libpfm_events(name_only, long_desc); 3096 } 3097 3098 int parse_events__is_hardcoded_term(struct parse_events_term *term) 3099 { 3100 return term->type_term != PARSE_EVENTS__TERM_TYPE_USER; 3101 } 3102 3103 static int new_term(struct parse_events_term **_term, 3104 struct parse_events_term *temp, 3105 char *str, u64 num) 3106 { 3107 struct parse_events_term *term; 3108 3109 term = malloc(sizeof(*term)); 3110 if (!term) 3111 return -ENOMEM; 3112 3113 *term = *temp; 3114 INIT_LIST_HEAD(&term->list); 3115 term->weak = false; 3116 3117 switch (term->type_val) { 3118 case PARSE_EVENTS__TERM_TYPE_NUM: 3119 term->val.num = num; 3120 break; 3121 case PARSE_EVENTS__TERM_TYPE_STR: 3122 term->val.str = str; 3123 break; 3124 default: 3125 free(term); 3126 return -EINVAL; 3127 } 3128 3129 *_term = term; 3130 return 0; 3131 } 3132 3133 int parse_events_term__num(struct parse_events_term **term, 3134 int type_term, char *config, u64 num, 3135 bool no_value, 3136 void *loc_term_, void *loc_val_) 3137 { 3138 YYLTYPE *loc_term = loc_term_; 3139 YYLTYPE *loc_val = loc_val_; 3140 3141 struct parse_events_term temp = { 3142 .type_val = PARSE_EVENTS__TERM_TYPE_NUM, 3143 .type_term = type_term, 3144 .config = config ? : strdup(config_term_names[type_term]), 3145 .no_value = no_value, 3146 .err_term = loc_term ? loc_term->first_column : 0, 3147 .err_val = loc_val ? loc_val->first_column : 0, 3148 }; 3149 3150 return new_term(term, &temp, NULL, num); 3151 } 3152 3153 int parse_events_term__str(struct parse_events_term **term, 3154 int type_term, char *config, char *str, 3155 void *loc_term_, void *loc_val_) 3156 { 3157 YYLTYPE *loc_term = loc_term_; 3158 YYLTYPE *loc_val = loc_val_; 3159 3160 struct parse_events_term temp = { 3161 .type_val = PARSE_EVENTS__TERM_TYPE_STR, 3162 .type_term = type_term, 3163 .config = config, 3164 .err_term = loc_term ? loc_term->first_column : 0, 3165 .err_val = loc_val ? loc_val->first_column : 0, 3166 }; 3167 3168 return new_term(term, &temp, str, 0); 3169 } 3170 3171 int parse_events_term__sym_hw(struct parse_events_term **term, 3172 char *config, unsigned idx) 3173 { 3174 struct event_symbol *sym; 3175 char *str; 3176 struct parse_events_term temp = { 3177 .type_val = PARSE_EVENTS__TERM_TYPE_STR, 3178 .type_term = PARSE_EVENTS__TERM_TYPE_USER, 3179 .config = config, 3180 }; 3181 3182 if (!temp.config) { 3183 temp.config = strdup("event"); 3184 if (!temp.config) 3185 return -ENOMEM; 3186 } 3187 BUG_ON(idx >= PERF_COUNT_HW_MAX); 3188 sym = &event_symbols_hw[idx]; 3189 3190 str = strdup(sym->symbol); 3191 if (!str) 3192 return -ENOMEM; 3193 return new_term(term, &temp, str, 0); 3194 } 3195 3196 int parse_events_term__clone(struct parse_events_term **new, 3197 struct parse_events_term *term) 3198 { 3199 char *str; 3200 struct parse_events_term temp = { 3201 .type_val = term->type_val, 3202 .type_term = term->type_term, 3203 .config = NULL, 3204 .err_term = term->err_term, 3205 .err_val = term->err_val, 3206 }; 3207 3208 if (term->config) { 3209 temp.config = strdup(term->config); 3210 if (!temp.config) 3211 return -ENOMEM; 3212 } 3213 if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) 3214 return new_term(new, &temp, NULL, term->val.num); 3215 3216 str = strdup(term->val.str); 3217 if (!str) 3218 return -ENOMEM; 3219 return new_term(new, &temp, str, 0); 3220 } 3221 3222 void parse_events_term__delete(struct parse_events_term *term) 3223 { 3224 if (term->array.nr_ranges) 3225 zfree(&term->array.ranges); 3226 3227 if (term->type_val != PARSE_EVENTS__TERM_TYPE_NUM) 3228 zfree(&term->val.str); 3229 3230 zfree(&term->config); 3231 free(term); 3232 } 3233 3234 int parse_events_copy_term_list(struct list_head *old, 3235 struct list_head **new) 3236 { 3237 struct parse_events_term *term, *n; 3238 int ret; 3239 3240 if (!old) { 3241 *new = NULL; 3242 return 0; 3243 } 3244 3245 *new = malloc(sizeof(struct list_head)); 3246 if (!*new) 3247 return -ENOMEM; 3248 INIT_LIST_HEAD(*new); 3249 3250 list_for_each_entry (term, old, list) { 3251 ret = parse_events_term__clone(&n, term); 3252 if (ret) 3253 return ret; 3254 list_add_tail(&n->list, *new); 3255 } 3256 return 0; 3257 } 3258 3259 void parse_events_terms__purge(struct list_head *terms) 3260 { 3261 struct parse_events_term *term, *h; 3262 3263 list_for_each_entry_safe(term, h, terms, list) { 3264 list_del_init(&term->list); 3265 parse_events_term__delete(term); 3266 } 3267 } 3268 3269 void parse_events_terms__delete(struct list_head *terms) 3270 { 3271 if (!terms) 3272 return; 3273 parse_events_terms__purge(terms); 3274 free(terms); 3275 } 3276 3277 void parse_events__clear_array(struct parse_events_array *a) 3278 { 3279 zfree(&a->ranges); 3280 } 3281 3282 void parse_events_evlist_error(struct parse_events_state *parse_state, 3283 int idx, const char *str) 3284 { 3285 if (!parse_state->error) 3286 return; 3287 3288 parse_events__handle_error(parse_state->error, idx, strdup(str), NULL); 3289 } 3290 3291 static void config_terms_list(char *buf, size_t buf_sz) 3292 { 3293 int i; 3294 bool first = true; 3295 3296 buf[0] = '\0'; 3297 for (i = 0; i < __PARSE_EVENTS__TERM_TYPE_NR; i++) { 3298 const char *name = config_term_names[i]; 3299 3300 if (!config_term_avail(i, NULL)) 3301 continue; 3302 if (!name) 3303 continue; 3304 if (name[0] == '<') 3305 continue; 3306 3307 if (strlen(buf) + strlen(name) + 2 >= buf_sz) 3308 return; 3309 3310 if (!first) 3311 strcat(buf, ","); 3312 else 3313 first = false; 3314 strcat(buf, name); 3315 } 3316 } 3317 3318 /* 3319 * Return string contains valid config terms of an event. 3320 * @additional_terms: For terms such as PMU sysfs terms. 3321 */ 3322 char *parse_events_formats_error_string(char *additional_terms) 3323 { 3324 char *str; 3325 /* "no-overwrite" is the longest name */ 3326 char static_terms[__PARSE_EVENTS__TERM_TYPE_NR * 3327 (sizeof("no-overwrite") - 1)]; 3328 3329 config_terms_list(static_terms, sizeof(static_terms)); 3330 /* valid terms */ 3331 if (additional_terms) { 3332 if (asprintf(&str, "valid terms: %s,%s", 3333 additional_terms, static_terms) < 0) 3334 goto fail; 3335 } else { 3336 if (asprintf(&str, "valid terms: %s", static_terms) < 0) 3337 goto fail; 3338 } 3339 return str; 3340 3341 fail: 3342 return NULL; 3343 } 3344 3345 struct evsel *parse_events__add_event_hybrid(struct list_head *list, int *idx, 3346 struct perf_event_attr *attr, 3347 char *name, struct perf_pmu *pmu, 3348 struct list_head *config_terms) 3349 { 3350 return __add_event(list, idx, attr, true, name, pmu, 3351 config_terms, false, NULL); 3352 } 3353