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