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