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