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