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