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