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 "bpf-loader.h" 23 #include "debug.h" 24 #include <api/fs/tracing_path.h> 25 #include <perf/cpumap.h> 26 #include "parse-events-bison.h" 27 #define YY_EXTRA_TYPE void* 28 #include "parse-events-flex.h" 29 #include "pmu.h" 30 #include "thread_map.h" 31 #include "probe-file.h" 32 #include "asm/bug.h" 33 #include "util/parse-branch-options.h" 34 #include "metricgroup.h" 35 #include "util/evsel_config.h" 36 #include "util/event.h" 37 #include "util/pfm.h" 38 #include "util/parse-events-hybrid.h" 39 #include "util/pmu-hybrid.h" 40 #include "perf.h" 41 42 #define MAX_NAME_LEN 100 43 44 #ifdef PARSER_DEBUG 45 extern int parse_events_debug; 46 #endif 47 int parse_events_parse(void *parse_state, void *scanner); 48 static int get_config_terms(struct list_head *head_config, 49 struct list_head *head_terms __maybe_unused); 50 static int parse_events__with_hybrid_pmu(struct parse_events_state *parse_state, 51 const char *str, char *pmu_name, 52 struct list_head *list); 53 54 static struct perf_pmu_event_symbol *perf_pmu_events_list; 55 /* 56 * The variable indicates the number of supported pmu event symbols. 57 * 0 means not initialized and ready to init 58 * -1 means failed to init, don't try anymore 59 * >0 is the number of supported pmu event symbols 60 */ 61 static int perf_pmu_events_list_num; 62 63 struct event_symbol event_symbols_hw[PERF_COUNT_HW_MAX] = { 64 [PERF_COUNT_HW_CPU_CYCLES] = { 65 .symbol = "cpu-cycles", 66 .alias = "cycles", 67 }, 68 [PERF_COUNT_HW_INSTRUCTIONS] = { 69 .symbol = "instructions", 70 .alias = "", 71 }, 72 [PERF_COUNT_HW_CACHE_REFERENCES] = { 73 .symbol = "cache-references", 74 .alias = "", 75 }, 76 [PERF_COUNT_HW_CACHE_MISSES] = { 77 .symbol = "cache-misses", 78 .alias = "", 79 }, 80 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = { 81 .symbol = "branch-instructions", 82 .alias = "branches", 83 }, 84 [PERF_COUNT_HW_BRANCH_MISSES] = { 85 .symbol = "branch-misses", 86 .alias = "", 87 }, 88 [PERF_COUNT_HW_BUS_CYCLES] = { 89 .symbol = "bus-cycles", 90 .alias = "", 91 }, 92 [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = { 93 .symbol = "stalled-cycles-frontend", 94 .alias = "idle-cycles-frontend", 95 }, 96 [PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = { 97 .symbol = "stalled-cycles-backend", 98 .alias = "idle-cycles-backend", 99 }, 100 [PERF_COUNT_HW_REF_CPU_CYCLES] = { 101 .symbol = "ref-cycles", 102 .alias = "", 103 }, 104 }; 105 106 struct event_symbol event_symbols_sw[PERF_COUNT_SW_MAX] = { 107 [PERF_COUNT_SW_CPU_CLOCK] = { 108 .symbol = "cpu-clock", 109 .alias = "", 110 }, 111 [PERF_COUNT_SW_TASK_CLOCK] = { 112 .symbol = "task-clock", 113 .alias = "", 114 }, 115 [PERF_COUNT_SW_PAGE_FAULTS] = { 116 .symbol = "page-faults", 117 .alias = "faults", 118 }, 119 [PERF_COUNT_SW_CONTEXT_SWITCHES] = { 120 .symbol = "context-switches", 121 .alias = "cs", 122 }, 123 [PERF_COUNT_SW_CPU_MIGRATIONS] = { 124 .symbol = "cpu-migrations", 125 .alias = "migrations", 126 }, 127 [PERF_COUNT_SW_PAGE_FAULTS_MIN] = { 128 .symbol = "minor-faults", 129 .alias = "", 130 }, 131 [PERF_COUNT_SW_PAGE_FAULTS_MAJ] = { 132 .symbol = "major-faults", 133 .alias = "", 134 }, 135 [PERF_COUNT_SW_ALIGNMENT_FAULTS] = { 136 .symbol = "alignment-faults", 137 .alias = "", 138 }, 139 [PERF_COUNT_SW_EMULATION_FAULTS] = { 140 .symbol = "emulation-faults", 141 .alias = "", 142 }, 143 [PERF_COUNT_SW_DUMMY] = { 144 .symbol = "dummy", 145 .alias = "", 146 }, 147 [PERF_COUNT_SW_BPF_OUTPUT] = { 148 .symbol = "bpf-output", 149 .alias = "", 150 }, 151 [PERF_COUNT_SW_CGROUP_SWITCHES] = { 152 .symbol = "cgroup-switches", 153 .alias = "", 154 }, 155 }; 156 157 #define __PERF_EVENT_FIELD(config, name) \ 158 ((config & PERF_EVENT_##name##_MASK) >> PERF_EVENT_##name##_SHIFT) 159 160 #define PERF_EVENT_RAW(config) __PERF_EVENT_FIELD(config, RAW) 161 #define PERF_EVENT_CONFIG(config) __PERF_EVENT_FIELD(config, CONFIG) 162 #define PERF_EVENT_TYPE(config) __PERF_EVENT_FIELD(config, TYPE) 163 #define PERF_EVENT_ID(config) __PERF_EVENT_FIELD(config, EVENT) 164 165 #define for_each_subsystem(sys_dir, sys_dirent) \ 166 while ((sys_dirent = readdir(sys_dir)) != NULL) \ 167 if (sys_dirent->d_type == DT_DIR && \ 168 (strcmp(sys_dirent->d_name, ".")) && \ 169 (strcmp(sys_dirent->d_name, ".."))) 170 171 static int tp_event_has_id(const char *dir_path, struct dirent *evt_dir) 172 { 173 char evt_path[MAXPATHLEN]; 174 int fd; 175 176 snprintf(evt_path, MAXPATHLEN, "%s/%s/id", dir_path, evt_dir->d_name); 177 fd = open(evt_path, O_RDONLY); 178 if (fd < 0) 179 return -EINVAL; 180 close(fd); 181 182 return 0; 183 } 184 185 #define for_each_event(dir_path, evt_dir, evt_dirent) \ 186 while ((evt_dirent = readdir(evt_dir)) != NULL) \ 187 if (evt_dirent->d_type == DT_DIR && \ 188 (strcmp(evt_dirent->d_name, ".")) && \ 189 (strcmp(evt_dirent->d_name, "..")) && \ 190 (!tp_event_has_id(dir_path, evt_dirent))) 191 192 #define MAX_EVENT_LENGTH 512 193 194 struct tracepoint_path *tracepoint_id_to_path(u64 config) 195 { 196 struct tracepoint_path *path = NULL; 197 DIR *sys_dir, *evt_dir; 198 struct dirent *sys_dirent, *evt_dirent; 199 char id_buf[24]; 200 int fd; 201 u64 id; 202 char evt_path[MAXPATHLEN]; 203 char *dir_path; 204 205 sys_dir = tracing_events__opendir(); 206 if (!sys_dir) 207 return NULL; 208 209 for_each_subsystem(sys_dir, sys_dirent) { 210 dir_path = get_events_file(sys_dirent->d_name); 211 if (!dir_path) 212 continue; 213 evt_dir = opendir(dir_path); 214 if (!evt_dir) 215 goto next; 216 217 for_each_event(dir_path, evt_dir, evt_dirent) { 218 219 scnprintf(evt_path, MAXPATHLEN, "%s/%s/id", dir_path, 220 evt_dirent->d_name); 221 fd = open(evt_path, O_RDONLY); 222 if (fd < 0) 223 continue; 224 if (read(fd, id_buf, sizeof(id_buf)) < 0) { 225 close(fd); 226 continue; 227 } 228 close(fd); 229 id = atoll(id_buf); 230 if (id == config) { 231 put_events_file(dir_path); 232 closedir(evt_dir); 233 closedir(sys_dir); 234 path = zalloc(sizeof(*path)); 235 if (!path) 236 return NULL; 237 if (asprintf(&path->system, "%.*s", MAX_EVENT_LENGTH, sys_dirent->d_name) < 0) { 238 free(path); 239 return NULL; 240 } 241 if (asprintf(&path->name, "%.*s", MAX_EVENT_LENGTH, evt_dirent->d_name) < 0) { 242 zfree(&path->system); 243 free(path); 244 return NULL; 245 } 246 return path; 247 } 248 } 249 closedir(evt_dir); 250 next: 251 put_events_file(dir_path); 252 } 253 254 closedir(sys_dir); 255 return NULL; 256 } 257 258 struct tracepoint_path *tracepoint_name_to_path(const char *name) 259 { 260 struct tracepoint_path *path = zalloc(sizeof(*path)); 261 char *str = strchr(name, ':'); 262 263 if (path == NULL || str == NULL) { 264 free(path); 265 return NULL; 266 } 267 268 path->system = strndup(name, str - name); 269 path->name = strdup(str+1); 270 271 if (path->system == NULL || path->name == NULL) { 272 zfree(&path->system); 273 zfree(&path->name); 274 zfree(&path); 275 } 276 277 return path; 278 } 279 280 const char *event_type(int type) 281 { 282 switch (type) { 283 case PERF_TYPE_HARDWARE: 284 return "hardware"; 285 286 case PERF_TYPE_SOFTWARE: 287 return "software"; 288 289 case PERF_TYPE_TRACEPOINT: 290 return "tracepoint"; 291 292 case PERF_TYPE_HW_CACHE: 293 return "hardware-cache"; 294 295 default: 296 break; 297 } 298 299 return "unknown"; 300 } 301 302 static char *get_config_str(struct list_head *head_terms, int type_term) 303 { 304 struct parse_events_term *term; 305 306 if (!head_terms) 307 return NULL; 308 309 list_for_each_entry(term, head_terms, list) 310 if (term->type_term == type_term) 311 return term->val.str; 312 313 return NULL; 314 } 315 316 static char *get_config_metric_id(struct list_head *head_terms) 317 { 318 return get_config_str(head_terms, PARSE_EVENTS__TERM_TYPE_METRIC_ID); 319 } 320 321 static char *get_config_name(struct list_head *head_terms) 322 { 323 return get_config_str(head_terms, PARSE_EVENTS__TERM_TYPE_NAME); 324 } 325 326 static struct evsel * 327 __add_event(struct list_head *list, int *idx, 328 struct perf_event_attr *attr, 329 bool init_attr, 330 const char *name, const char *metric_id, struct perf_pmu *pmu, 331 struct list_head *config_terms, bool auto_merge_stats, 332 const char *cpu_list) 333 { 334 struct evsel *evsel; 335 struct perf_cpu_map *cpus = pmu ? perf_cpu_map__get(pmu->cpus) : 336 cpu_list ? perf_cpu_map__new(cpu_list) : NULL; 337 338 if (pmu && attr->type == PERF_TYPE_RAW) 339 perf_pmu__warn_invalid_config(pmu, attr->config, name); 340 341 if (init_attr) 342 event_attr_init(attr); 343 344 evsel = evsel__new_idx(attr, *idx); 345 if (!evsel) { 346 perf_cpu_map__put(cpus); 347 return NULL; 348 } 349 350 (*idx)++; 351 evsel->core.cpus = cpus; 352 evsel->core.own_cpus = perf_cpu_map__get(cpus); 353 evsel->core.system_wide = pmu ? pmu->is_uncore : false; 354 evsel->auto_merge_stats = auto_merge_stats; 355 356 if (name) 357 evsel->name = strdup(name); 358 359 if (metric_id) 360 evsel->metric_id = strdup(metric_id); 361 362 if (config_terms) 363 list_splice_init(config_terms, &evsel->config_terms); 364 365 if (list) 366 list_add_tail(&evsel->core.node, list); 367 368 return evsel; 369 } 370 371 struct evsel *parse_events__add_event(int idx, struct perf_event_attr *attr, 372 const char *name, const char *metric_id, 373 struct perf_pmu *pmu) 374 { 375 return __add_event(/*list=*/NULL, &idx, attr, /*init_attr=*/false, name, 376 metric_id, pmu, /*config_terms=*/NULL, 377 /*auto_merge_stats=*/false, /*cpu_list=*/NULL); 378 } 379 380 static int add_event(struct list_head *list, int *idx, 381 struct perf_event_attr *attr, const char *name, 382 const char *metric_id, struct list_head *config_terms) 383 { 384 return __add_event(list, idx, attr, /*init_attr*/true, name, metric_id, 385 /*pmu=*/NULL, config_terms, 386 /*auto_merge_stats=*/false, /*cpu_list=*/NULL) ? 0 : -ENOMEM; 387 } 388 389 static int add_event_tool(struct list_head *list, int *idx, 390 enum perf_tool_event tool_event) 391 { 392 struct evsel *evsel; 393 struct perf_event_attr attr = { 394 .type = PERF_TYPE_SOFTWARE, 395 .config = PERF_COUNT_SW_DUMMY, 396 }; 397 398 evsel = __add_event(list, idx, &attr, /*init_attr=*/true, /*name=*/NULL, 399 /*metric_id=*/NULL, /*pmu=*/NULL, 400 /*config_terms=*/NULL, /*auto_merge_stats=*/false, 401 /*cpu_list=*/"0"); 402 if (!evsel) 403 return -ENOMEM; 404 evsel->tool_event = tool_event; 405 if (tool_event == PERF_TOOL_DURATION_TIME) 406 evsel->unit = "ns"; 407 return 0; 408 } 409 410 static int parse_aliases(char *str, const char *names[][EVSEL__MAX_ALIASES], int size) 411 { 412 int i, j; 413 int n, longest = -1; 414 415 for (i = 0; i < size; i++) { 416 for (j = 0; j < EVSEL__MAX_ALIASES && names[i][j]; j++) { 417 n = strlen(names[i][j]); 418 if (n > longest && !strncasecmp(str, names[i][j], n)) 419 longest = n; 420 } 421 if (longest > 0) 422 return i; 423 } 424 425 return -1; 426 } 427 428 typedef int config_term_func_t(struct perf_event_attr *attr, 429 struct parse_events_term *term, 430 struct parse_events_error *err); 431 static int config_term_common(struct perf_event_attr *attr, 432 struct parse_events_term *term, 433 struct parse_events_error *err); 434 static int config_attr(struct perf_event_attr *attr, 435 struct list_head *head, 436 struct parse_events_error *err, 437 config_term_func_t config_term); 438 439 int parse_events_add_cache(struct list_head *list, int *idx, 440 char *type, char *op_result1, char *op_result2, 441 struct parse_events_error *err, 442 struct list_head *head_config, 443 struct parse_events_state *parse_state) 444 { 445 struct perf_event_attr attr; 446 LIST_HEAD(config_terms); 447 char name[MAX_NAME_LEN]; 448 const char *config_name, *metric_id; 449 int cache_type = -1, cache_op = -1, cache_result = -1; 450 char *op_result[2] = { op_result1, op_result2 }; 451 int i, n, ret; 452 bool hybrid; 453 454 /* 455 * No fallback - if we cannot get a clear cache type 456 * then bail out: 457 */ 458 cache_type = parse_aliases(type, evsel__hw_cache, PERF_COUNT_HW_CACHE_MAX); 459 if (cache_type == -1) 460 return -EINVAL; 461 462 config_name = get_config_name(head_config); 463 n = snprintf(name, MAX_NAME_LEN, "%s", type); 464 465 for (i = 0; (i < 2) && (op_result[i]); i++) { 466 char *str = op_result[i]; 467 468 n += snprintf(name + n, MAX_NAME_LEN - n, "-%s", str); 469 470 if (cache_op == -1) { 471 cache_op = parse_aliases(str, evsel__hw_cache_op, 472 PERF_COUNT_HW_CACHE_OP_MAX); 473 if (cache_op >= 0) { 474 if (!evsel__is_cache_op_valid(cache_type, cache_op)) 475 return -EINVAL; 476 continue; 477 } 478 } 479 480 if (cache_result == -1) { 481 cache_result = parse_aliases(str, evsel__hw_cache_result, 482 PERF_COUNT_HW_CACHE_RESULT_MAX); 483 if (cache_result >= 0) 484 continue; 485 } 486 } 487 488 /* 489 * Fall back to reads: 490 */ 491 if (cache_op == -1) 492 cache_op = PERF_COUNT_HW_CACHE_OP_READ; 493 494 /* 495 * Fall back to accesses: 496 */ 497 if (cache_result == -1) 498 cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS; 499 500 memset(&attr, 0, sizeof(attr)); 501 attr.config = cache_type | (cache_op << 8) | (cache_result << 16); 502 attr.type = PERF_TYPE_HW_CACHE; 503 504 if (head_config) { 505 if (config_attr(&attr, head_config, err, 506 config_term_common)) 507 return -EINVAL; 508 509 if (get_config_terms(head_config, &config_terms)) 510 return -ENOMEM; 511 } 512 513 metric_id = get_config_metric_id(head_config); 514 ret = parse_events__add_cache_hybrid(list, idx, &attr, 515 config_name ? : name, 516 metric_id, 517 &config_terms, 518 &hybrid, parse_state); 519 if (hybrid) 520 goto out_free_terms; 521 522 ret = add_event(list, idx, &attr, config_name ? : name, metric_id, 523 &config_terms); 524 out_free_terms: 525 free_config_terms(&config_terms); 526 return ret; 527 } 528 529 static void tracepoint_error(struct parse_events_error *e, int err, 530 const char *sys, const char *name) 531 { 532 const char *str; 533 char help[BUFSIZ]; 534 535 if (!e) 536 return; 537 538 /* 539 * We get error directly from syscall errno ( > 0), 540 * or from encoded pointer's error ( < 0). 541 */ 542 err = abs(err); 543 544 switch (err) { 545 case EACCES: 546 str = "can't access trace events"; 547 break; 548 case ENOENT: 549 str = "unknown tracepoint"; 550 break; 551 default: 552 str = "failed to add tracepoint"; 553 break; 554 } 555 556 tracing_path__strerror_open_tp(err, help, sizeof(help), sys, name); 557 parse_events_error__handle(e, 0, strdup(str), strdup(help)); 558 } 559 560 static int add_tracepoint(struct list_head *list, int *idx, 561 const char *sys_name, const char *evt_name, 562 struct parse_events_error *err, 563 struct list_head *head_config) 564 { 565 struct evsel *evsel = evsel__newtp_idx(sys_name, evt_name, (*idx)++); 566 567 if (IS_ERR(evsel)) { 568 tracepoint_error(err, PTR_ERR(evsel), sys_name, evt_name); 569 return PTR_ERR(evsel); 570 } 571 572 if (head_config) { 573 LIST_HEAD(config_terms); 574 575 if (get_config_terms(head_config, &config_terms)) 576 return -ENOMEM; 577 list_splice(&config_terms, &evsel->config_terms); 578 } 579 580 list_add_tail(&evsel->core.node, list); 581 return 0; 582 } 583 584 static int add_tracepoint_multi_event(struct list_head *list, int *idx, 585 const char *sys_name, const char *evt_name, 586 struct parse_events_error *err, 587 struct list_head *head_config) 588 { 589 char *evt_path; 590 struct dirent *evt_ent; 591 DIR *evt_dir; 592 int ret = 0, found = 0; 593 594 evt_path = get_events_file(sys_name); 595 if (!evt_path) { 596 tracepoint_error(err, errno, sys_name, evt_name); 597 return -1; 598 } 599 evt_dir = opendir(evt_path); 600 if (!evt_dir) { 601 put_events_file(evt_path); 602 tracepoint_error(err, errno, sys_name, evt_name); 603 return -1; 604 } 605 606 while (!ret && (evt_ent = readdir(evt_dir))) { 607 if (!strcmp(evt_ent->d_name, ".") 608 || !strcmp(evt_ent->d_name, "..") 609 || !strcmp(evt_ent->d_name, "enable") 610 || !strcmp(evt_ent->d_name, "filter")) 611 continue; 612 613 if (!strglobmatch(evt_ent->d_name, evt_name)) 614 continue; 615 616 found++; 617 618 ret = add_tracepoint(list, idx, sys_name, evt_ent->d_name, 619 err, head_config); 620 } 621 622 if (!found) { 623 tracepoint_error(err, ENOENT, sys_name, evt_name); 624 ret = -1; 625 } 626 627 put_events_file(evt_path); 628 closedir(evt_dir); 629 return ret; 630 } 631 632 static int add_tracepoint_event(struct list_head *list, int *idx, 633 const char *sys_name, const char *evt_name, 634 struct parse_events_error *err, 635 struct list_head *head_config) 636 { 637 return strpbrk(evt_name, "*?") ? 638 add_tracepoint_multi_event(list, idx, sys_name, evt_name, 639 err, head_config) : 640 add_tracepoint(list, idx, sys_name, evt_name, 641 err, head_config); 642 } 643 644 static int add_tracepoint_multi_sys(struct list_head *list, int *idx, 645 const char *sys_name, const char *evt_name, 646 struct parse_events_error *err, 647 struct list_head *head_config) 648 { 649 struct dirent *events_ent; 650 DIR *events_dir; 651 int ret = 0; 652 653 events_dir = tracing_events__opendir(); 654 if (!events_dir) { 655 tracepoint_error(err, errno, sys_name, evt_name); 656 return -1; 657 } 658 659 while (!ret && (events_ent = readdir(events_dir))) { 660 if (!strcmp(events_ent->d_name, ".") 661 || !strcmp(events_ent->d_name, "..") 662 || !strcmp(events_ent->d_name, "enable") 663 || !strcmp(events_ent->d_name, "header_event") 664 || !strcmp(events_ent->d_name, "header_page")) 665 continue; 666 667 if (!strglobmatch(events_ent->d_name, sys_name)) 668 continue; 669 670 ret = add_tracepoint_event(list, idx, events_ent->d_name, 671 evt_name, err, head_config); 672 } 673 674 closedir(events_dir); 675 return ret; 676 } 677 678 #ifdef HAVE_LIBBPF_SUPPORT 679 struct __add_bpf_event_param { 680 struct parse_events_state *parse_state; 681 struct list_head *list; 682 struct list_head *head_config; 683 }; 684 685 static int add_bpf_event(const char *group, const char *event, int fd, struct bpf_object *obj, 686 void *_param) 687 { 688 LIST_HEAD(new_evsels); 689 struct __add_bpf_event_param *param = _param; 690 struct parse_events_state *parse_state = param->parse_state; 691 struct list_head *list = param->list; 692 struct evsel *pos; 693 int err; 694 /* 695 * Check if we should add the event, i.e. if it is a TP but starts with a '!', 696 * then don't add the tracepoint, this will be used for something else, like 697 * adding to a BPF_MAP_TYPE_PROG_ARRAY. 698 * 699 * See tools/perf/examples/bpf/augmented_raw_syscalls.c 700 */ 701 if (group[0] == '!') 702 return 0; 703 704 pr_debug("add bpf event %s:%s and attach bpf program %d\n", 705 group, event, fd); 706 707 err = parse_events_add_tracepoint(&new_evsels, &parse_state->idx, group, 708 event, parse_state->error, 709 param->head_config); 710 if (err) { 711 struct evsel *evsel, *tmp; 712 713 pr_debug("Failed to add BPF event %s:%s\n", 714 group, event); 715 list_for_each_entry_safe(evsel, tmp, &new_evsels, core.node) { 716 list_del_init(&evsel->core.node); 717 evsel__delete(evsel); 718 } 719 return err; 720 } 721 pr_debug("adding %s:%s\n", group, event); 722 723 list_for_each_entry(pos, &new_evsels, core.node) { 724 pr_debug("adding %s:%s to %p\n", 725 group, event, pos); 726 pos->bpf_fd = fd; 727 pos->bpf_obj = obj; 728 } 729 list_splice(&new_evsels, list); 730 return 0; 731 } 732 733 int parse_events_load_bpf_obj(struct parse_events_state *parse_state, 734 struct list_head *list, 735 struct bpf_object *obj, 736 struct list_head *head_config) 737 { 738 int err; 739 char errbuf[BUFSIZ]; 740 struct __add_bpf_event_param param = {parse_state, list, head_config}; 741 static bool registered_unprobe_atexit = false; 742 743 if (IS_ERR(obj) || !obj) { 744 snprintf(errbuf, sizeof(errbuf), 745 "Internal error: load bpf obj with NULL"); 746 err = -EINVAL; 747 goto errout; 748 } 749 750 /* 751 * Register atexit handler before calling bpf__probe() so 752 * bpf__probe() don't need to unprobe probe points its already 753 * created when failure. 754 */ 755 if (!registered_unprobe_atexit) { 756 atexit(bpf__clear); 757 registered_unprobe_atexit = true; 758 } 759 760 err = bpf__probe(obj); 761 if (err) { 762 bpf__strerror_probe(obj, err, errbuf, sizeof(errbuf)); 763 goto errout; 764 } 765 766 err = bpf__load(obj); 767 if (err) { 768 bpf__strerror_load(obj, err, errbuf, sizeof(errbuf)); 769 goto errout; 770 } 771 772 err = bpf__foreach_event(obj, add_bpf_event, ¶m); 773 if (err) { 774 snprintf(errbuf, sizeof(errbuf), 775 "Attach events in BPF object failed"); 776 goto errout; 777 } 778 779 return 0; 780 errout: 781 parse_events_error__handle(parse_state->error, 0, 782 strdup(errbuf), strdup("(add -v to see detail)")); 783 return err; 784 } 785 786 static int 787 parse_events_config_bpf(struct parse_events_state *parse_state, 788 struct bpf_object *obj, 789 struct list_head *head_config) 790 { 791 struct parse_events_term *term; 792 int error_pos; 793 794 if (!head_config || list_empty(head_config)) 795 return 0; 796 797 list_for_each_entry(term, head_config, list) { 798 int err; 799 800 if (term->type_term != PARSE_EVENTS__TERM_TYPE_USER) { 801 parse_events_error__handle(parse_state->error, term->err_term, 802 strdup("Invalid config term for BPF object"), 803 NULL); 804 return -EINVAL; 805 } 806 807 err = bpf__config_obj(obj, term, parse_state->evlist, &error_pos); 808 if (err) { 809 char errbuf[BUFSIZ]; 810 int idx; 811 812 bpf__strerror_config_obj(obj, term, parse_state->evlist, 813 &error_pos, err, errbuf, 814 sizeof(errbuf)); 815 816 if (err == -BPF_LOADER_ERRNO__OBJCONF_MAP_VALUE) 817 idx = term->err_val; 818 else 819 idx = term->err_term + error_pos; 820 821 parse_events_error__handle(parse_state->error, idx, 822 strdup(errbuf), 823 strdup( 824 "Hint:\tValid config terms:\n" 825 " \tmap:[<arraymap>].value<indices>=[value]\n" 826 " \tmap:[<eventmap>].event<indices>=[event]\n" 827 "\n" 828 " \twhere <indices> is something like [0,3...5] or [all]\n" 829 " \t(add -v to see detail)")); 830 return err; 831 } 832 } 833 return 0; 834 } 835 836 /* 837 * Split config terms: 838 * perf record -e bpf.c/call-graph=fp,map:array.value[0]=1/ ... 839 * 'call-graph=fp' is 'evt config', should be applied to each 840 * events in bpf.c. 841 * 'map:array.value[0]=1' is 'obj config', should be processed 842 * with parse_events_config_bpf. 843 * 844 * Move object config terms from the first list to obj_head_config. 845 */ 846 static void 847 split_bpf_config_terms(struct list_head *evt_head_config, 848 struct list_head *obj_head_config) 849 { 850 struct parse_events_term *term, *temp; 851 852 /* 853 * Currently, all possible user config term 854 * belong to bpf object. parse_events__is_hardcoded_term() 855 * happens to be a good flag. 856 * 857 * See parse_events_config_bpf() and 858 * config_term_tracepoint(). 859 */ 860 list_for_each_entry_safe(term, temp, evt_head_config, list) 861 if (!parse_events__is_hardcoded_term(term)) 862 list_move_tail(&term->list, obj_head_config); 863 } 864 865 int parse_events_load_bpf(struct parse_events_state *parse_state, 866 struct list_head *list, 867 char *bpf_file_name, 868 bool source, 869 struct list_head *head_config) 870 { 871 int err; 872 struct bpf_object *obj; 873 LIST_HEAD(obj_head_config); 874 875 if (head_config) 876 split_bpf_config_terms(head_config, &obj_head_config); 877 878 obj = bpf__prepare_load(bpf_file_name, source); 879 if (IS_ERR(obj)) { 880 char errbuf[BUFSIZ]; 881 882 err = PTR_ERR(obj); 883 884 if (err == -ENOTSUP) 885 snprintf(errbuf, sizeof(errbuf), 886 "BPF support is not compiled"); 887 else 888 bpf__strerror_prepare_load(bpf_file_name, 889 source, 890 -err, errbuf, 891 sizeof(errbuf)); 892 893 parse_events_error__handle(parse_state->error, 0, 894 strdup(errbuf), strdup("(add -v to see detail)")); 895 return err; 896 } 897 898 err = parse_events_load_bpf_obj(parse_state, list, obj, head_config); 899 if (err) 900 return err; 901 err = parse_events_config_bpf(parse_state, obj, &obj_head_config); 902 903 /* 904 * Caller doesn't know anything about obj_head_config, 905 * so combine them together again before returning. 906 */ 907 if (head_config) 908 list_splice_tail(&obj_head_config, head_config); 909 return err; 910 } 911 #else // HAVE_LIBBPF_SUPPORT 912 int parse_events_load_bpf_obj(struct parse_events_state *parse_state, 913 struct list_head *list __maybe_unused, 914 struct bpf_object *obj __maybe_unused, 915 struct list_head *head_config __maybe_unused) 916 { 917 parse_events_error__handle(parse_state->error, 0, 918 strdup("BPF support is not compiled"), 919 strdup("Make sure libbpf-devel is available at build time.")); 920 return -ENOTSUP; 921 } 922 923 int parse_events_load_bpf(struct parse_events_state *parse_state, 924 struct list_head *list __maybe_unused, 925 char *bpf_file_name __maybe_unused, 926 bool source __maybe_unused, 927 struct list_head *head_config __maybe_unused) 928 { 929 parse_events_error__handle(parse_state->error, 0, 930 strdup("BPF support is not compiled"), 931 strdup("Make sure libbpf-devel is available at build time.")); 932 return -ENOTSUP; 933 } 934 #endif // HAVE_LIBBPF_SUPPORT 935 936 static int 937 parse_breakpoint_type(const char *type, struct perf_event_attr *attr) 938 { 939 int i; 940 941 for (i = 0; i < 3; i++) { 942 if (!type || !type[i]) 943 break; 944 945 #define CHECK_SET_TYPE(bit) \ 946 do { \ 947 if (attr->bp_type & bit) \ 948 return -EINVAL; \ 949 else \ 950 attr->bp_type |= bit; \ 951 } while (0) 952 953 switch (type[i]) { 954 case 'r': 955 CHECK_SET_TYPE(HW_BREAKPOINT_R); 956 break; 957 case 'w': 958 CHECK_SET_TYPE(HW_BREAKPOINT_W); 959 break; 960 case 'x': 961 CHECK_SET_TYPE(HW_BREAKPOINT_X); 962 break; 963 default: 964 return -EINVAL; 965 } 966 } 967 968 #undef CHECK_SET_TYPE 969 970 if (!attr->bp_type) /* Default */ 971 attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W; 972 973 return 0; 974 } 975 976 int parse_events_add_breakpoint(struct list_head *list, int *idx, 977 u64 addr, char *type, u64 len) 978 { 979 struct perf_event_attr attr; 980 981 memset(&attr, 0, sizeof(attr)); 982 attr.bp_addr = addr; 983 984 if (parse_breakpoint_type(type, &attr)) 985 return -EINVAL; 986 987 /* Provide some defaults if len is not specified */ 988 if (!len) { 989 if (attr.bp_type == HW_BREAKPOINT_X) 990 len = sizeof(long); 991 else 992 len = HW_BREAKPOINT_LEN_4; 993 } 994 995 attr.bp_len = len; 996 997 attr.type = PERF_TYPE_BREAKPOINT; 998 attr.sample_period = 1; 999 1000 return add_event(list, idx, &attr, /*name=*/NULL, /*mertic_id=*/NULL, 1001 /*config_terms=*/NULL); 1002 } 1003 1004 static int check_type_val(struct parse_events_term *term, 1005 struct parse_events_error *err, 1006 int type) 1007 { 1008 if (type == term->type_val) 1009 return 0; 1010 1011 if (err) { 1012 parse_events_error__handle(err, term->err_val, 1013 type == PARSE_EVENTS__TERM_TYPE_NUM 1014 ? strdup("expected numeric value") 1015 : strdup("expected string value"), 1016 NULL); 1017 } 1018 return -EINVAL; 1019 } 1020 1021 /* 1022 * Update according to parse-events.l 1023 */ 1024 static const char *config_term_names[__PARSE_EVENTS__TERM_TYPE_NR] = { 1025 [PARSE_EVENTS__TERM_TYPE_USER] = "<sysfs term>", 1026 [PARSE_EVENTS__TERM_TYPE_CONFIG] = "config", 1027 [PARSE_EVENTS__TERM_TYPE_CONFIG1] = "config1", 1028 [PARSE_EVENTS__TERM_TYPE_CONFIG2] = "config2", 1029 [PARSE_EVENTS__TERM_TYPE_NAME] = "name", 1030 [PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD] = "period", 1031 [PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ] = "freq", 1032 [PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE] = "branch_type", 1033 [PARSE_EVENTS__TERM_TYPE_TIME] = "time", 1034 [PARSE_EVENTS__TERM_TYPE_CALLGRAPH] = "call-graph", 1035 [PARSE_EVENTS__TERM_TYPE_STACKSIZE] = "stack-size", 1036 [PARSE_EVENTS__TERM_TYPE_NOINHERIT] = "no-inherit", 1037 [PARSE_EVENTS__TERM_TYPE_INHERIT] = "inherit", 1038 [PARSE_EVENTS__TERM_TYPE_MAX_STACK] = "max-stack", 1039 [PARSE_EVENTS__TERM_TYPE_MAX_EVENTS] = "nr", 1040 [PARSE_EVENTS__TERM_TYPE_OVERWRITE] = "overwrite", 1041 [PARSE_EVENTS__TERM_TYPE_NOOVERWRITE] = "no-overwrite", 1042 [PARSE_EVENTS__TERM_TYPE_DRV_CFG] = "driver-config", 1043 [PARSE_EVENTS__TERM_TYPE_PERCORE] = "percore", 1044 [PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT] = "aux-output", 1045 [PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE] = "aux-sample-size", 1046 [PARSE_EVENTS__TERM_TYPE_METRIC_ID] = "metric-id", 1047 }; 1048 1049 static bool config_term_shrinked; 1050 1051 static bool 1052 config_term_avail(int term_type, struct parse_events_error *err) 1053 { 1054 char *err_str; 1055 1056 if (term_type < 0 || term_type >= __PARSE_EVENTS__TERM_TYPE_NR) { 1057 parse_events_error__handle(err, -1, 1058 strdup("Invalid term_type"), NULL); 1059 return false; 1060 } 1061 if (!config_term_shrinked) 1062 return true; 1063 1064 switch (term_type) { 1065 case PARSE_EVENTS__TERM_TYPE_CONFIG: 1066 case PARSE_EVENTS__TERM_TYPE_CONFIG1: 1067 case PARSE_EVENTS__TERM_TYPE_CONFIG2: 1068 case PARSE_EVENTS__TERM_TYPE_NAME: 1069 case PARSE_EVENTS__TERM_TYPE_METRIC_ID: 1070 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD: 1071 case PARSE_EVENTS__TERM_TYPE_PERCORE: 1072 return true; 1073 default: 1074 if (!err) 1075 return false; 1076 1077 /* term_type is validated so indexing is safe */ 1078 if (asprintf(&err_str, "'%s' is not usable in 'perf stat'", 1079 config_term_names[term_type]) >= 0) 1080 parse_events_error__handle(err, -1, err_str, NULL); 1081 return false; 1082 } 1083 } 1084 1085 void parse_events__shrink_config_terms(void) 1086 { 1087 config_term_shrinked = true; 1088 } 1089 1090 static int config_term_common(struct perf_event_attr *attr, 1091 struct parse_events_term *term, 1092 struct parse_events_error *err) 1093 { 1094 #define CHECK_TYPE_VAL(type) \ 1095 do { \ 1096 if (check_type_val(term, err, PARSE_EVENTS__TERM_TYPE_ ## type)) \ 1097 return -EINVAL; \ 1098 } while (0) 1099 1100 switch (term->type_term) { 1101 case PARSE_EVENTS__TERM_TYPE_CONFIG: 1102 CHECK_TYPE_VAL(NUM); 1103 attr->config = term->val.num; 1104 break; 1105 case PARSE_EVENTS__TERM_TYPE_CONFIG1: 1106 CHECK_TYPE_VAL(NUM); 1107 attr->config1 = term->val.num; 1108 break; 1109 case PARSE_EVENTS__TERM_TYPE_CONFIG2: 1110 CHECK_TYPE_VAL(NUM); 1111 attr->config2 = term->val.num; 1112 break; 1113 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD: 1114 CHECK_TYPE_VAL(NUM); 1115 break; 1116 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ: 1117 CHECK_TYPE_VAL(NUM); 1118 break; 1119 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE: 1120 CHECK_TYPE_VAL(STR); 1121 if (strcmp(term->val.str, "no") && 1122 parse_branch_str(term->val.str, 1123 &attr->branch_sample_type)) { 1124 parse_events_error__handle(err, term->err_val, 1125 strdup("invalid branch sample type"), 1126 NULL); 1127 return -EINVAL; 1128 } 1129 break; 1130 case PARSE_EVENTS__TERM_TYPE_TIME: 1131 CHECK_TYPE_VAL(NUM); 1132 if (term->val.num > 1) { 1133 parse_events_error__handle(err, term->err_val, 1134 strdup("expected 0 or 1"), 1135 NULL); 1136 return -EINVAL; 1137 } 1138 break; 1139 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH: 1140 CHECK_TYPE_VAL(STR); 1141 break; 1142 case PARSE_EVENTS__TERM_TYPE_STACKSIZE: 1143 CHECK_TYPE_VAL(NUM); 1144 break; 1145 case PARSE_EVENTS__TERM_TYPE_INHERIT: 1146 CHECK_TYPE_VAL(NUM); 1147 break; 1148 case PARSE_EVENTS__TERM_TYPE_NOINHERIT: 1149 CHECK_TYPE_VAL(NUM); 1150 break; 1151 case PARSE_EVENTS__TERM_TYPE_OVERWRITE: 1152 CHECK_TYPE_VAL(NUM); 1153 break; 1154 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE: 1155 CHECK_TYPE_VAL(NUM); 1156 break; 1157 case PARSE_EVENTS__TERM_TYPE_NAME: 1158 CHECK_TYPE_VAL(STR); 1159 break; 1160 case PARSE_EVENTS__TERM_TYPE_METRIC_ID: 1161 CHECK_TYPE_VAL(STR); 1162 break; 1163 case PARSE_EVENTS__TERM_TYPE_MAX_STACK: 1164 CHECK_TYPE_VAL(NUM); 1165 break; 1166 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS: 1167 CHECK_TYPE_VAL(NUM); 1168 break; 1169 case PARSE_EVENTS__TERM_TYPE_PERCORE: 1170 CHECK_TYPE_VAL(NUM); 1171 if ((unsigned int)term->val.num > 1) { 1172 parse_events_error__handle(err, term->err_val, 1173 strdup("expected 0 or 1"), 1174 NULL); 1175 return -EINVAL; 1176 } 1177 break; 1178 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT: 1179 CHECK_TYPE_VAL(NUM); 1180 break; 1181 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE: 1182 CHECK_TYPE_VAL(NUM); 1183 if (term->val.num > UINT_MAX) { 1184 parse_events_error__handle(err, term->err_val, 1185 strdup("too big"), 1186 NULL); 1187 return -EINVAL; 1188 } 1189 break; 1190 default: 1191 parse_events_error__handle(err, term->err_term, 1192 strdup("unknown term"), 1193 parse_events_formats_error_string(NULL)); 1194 return -EINVAL; 1195 } 1196 1197 /* 1198 * Check term availability after basic checking so 1199 * PARSE_EVENTS__TERM_TYPE_USER can be found and filtered. 1200 * 1201 * If check availability at the entry of this function, 1202 * user will see "'<sysfs term>' is not usable in 'perf stat'" 1203 * if an invalid config term is provided for legacy events 1204 * (for example, instructions/badterm/...), which is confusing. 1205 */ 1206 if (!config_term_avail(term->type_term, err)) 1207 return -EINVAL; 1208 return 0; 1209 #undef CHECK_TYPE_VAL 1210 } 1211 1212 static int config_term_pmu(struct perf_event_attr *attr, 1213 struct parse_events_term *term, 1214 struct parse_events_error *err) 1215 { 1216 if (term->type_term == PARSE_EVENTS__TERM_TYPE_USER || 1217 term->type_term == PARSE_EVENTS__TERM_TYPE_DRV_CFG) 1218 /* 1219 * Always succeed for sysfs terms, as we dont know 1220 * at this point what type they need to have. 1221 */ 1222 return 0; 1223 else 1224 return config_term_common(attr, term, err); 1225 } 1226 1227 static int config_term_tracepoint(struct perf_event_attr *attr, 1228 struct parse_events_term *term, 1229 struct parse_events_error *err) 1230 { 1231 switch (term->type_term) { 1232 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH: 1233 case PARSE_EVENTS__TERM_TYPE_STACKSIZE: 1234 case PARSE_EVENTS__TERM_TYPE_INHERIT: 1235 case PARSE_EVENTS__TERM_TYPE_NOINHERIT: 1236 case PARSE_EVENTS__TERM_TYPE_MAX_STACK: 1237 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS: 1238 case PARSE_EVENTS__TERM_TYPE_OVERWRITE: 1239 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE: 1240 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT: 1241 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE: 1242 return config_term_common(attr, term, err); 1243 default: 1244 if (err) { 1245 parse_events_error__handle(err, term->err_term, 1246 strdup("unknown term"), 1247 strdup("valid terms: call-graph,stack-size\n")); 1248 } 1249 return -EINVAL; 1250 } 1251 1252 return 0; 1253 } 1254 1255 static int config_attr(struct perf_event_attr *attr, 1256 struct list_head *head, 1257 struct parse_events_error *err, 1258 config_term_func_t config_term) 1259 { 1260 struct parse_events_term *term; 1261 1262 list_for_each_entry(term, head, list) 1263 if (config_term(attr, term, err)) 1264 return -EINVAL; 1265 1266 return 0; 1267 } 1268 1269 static int get_config_terms(struct list_head *head_config, 1270 struct list_head *head_terms __maybe_unused) 1271 { 1272 #define ADD_CONFIG_TERM(__type, __weak) \ 1273 struct evsel_config_term *__t; \ 1274 \ 1275 __t = zalloc(sizeof(*__t)); \ 1276 if (!__t) \ 1277 return -ENOMEM; \ 1278 \ 1279 INIT_LIST_HEAD(&__t->list); \ 1280 __t->type = EVSEL__CONFIG_TERM_ ## __type; \ 1281 __t->weak = __weak; \ 1282 list_add_tail(&__t->list, head_terms) 1283 1284 #define ADD_CONFIG_TERM_VAL(__type, __name, __val, __weak) \ 1285 do { \ 1286 ADD_CONFIG_TERM(__type, __weak); \ 1287 __t->val.__name = __val; \ 1288 } while (0) 1289 1290 #define ADD_CONFIG_TERM_STR(__type, __val, __weak) \ 1291 do { \ 1292 ADD_CONFIG_TERM(__type, __weak); \ 1293 __t->val.str = strdup(__val); \ 1294 if (!__t->val.str) { \ 1295 zfree(&__t); \ 1296 return -ENOMEM; \ 1297 } \ 1298 __t->free_str = true; \ 1299 } while (0) 1300 1301 struct parse_events_term *term; 1302 1303 list_for_each_entry(term, head_config, list) { 1304 switch (term->type_term) { 1305 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD: 1306 ADD_CONFIG_TERM_VAL(PERIOD, period, term->val.num, term->weak); 1307 break; 1308 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ: 1309 ADD_CONFIG_TERM_VAL(FREQ, freq, term->val.num, term->weak); 1310 break; 1311 case PARSE_EVENTS__TERM_TYPE_TIME: 1312 ADD_CONFIG_TERM_VAL(TIME, time, term->val.num, term->weak); 1313 break; 1314 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH: 1315 ADD_CONFIG_TERM_STR(CALLGRAPH, term->val.str, term->weak); 1316 break; 1317 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE: 1318 ADD_CONFIG_TERM_STR(BRANCH, term->val.str, term->weak); 1319 break; 1320 case PARSE_EVENTS__TERM_TYPE_STACKSIZE: 1321 ADD_CONFIG_TERM_VAL(STACK_USER, stack_user, 1322 term->val.num, term->weak); 1323 break; 1324 case PARSE_EVENTS__TERM_TYPE_INHERIT: 1325 ADD_CONFIG_TERM_VAL(INHERIT, inherit, 1326 term->val.num ? 1 : 0, term->weak); 1327 break; 1328 case PARSE_EVENTS__TERM_TYPE_NOINHERIT: 1329 ADD_CONFIG_TERM_VAL(INHERIT, inherit, 1330 term->val.num ? 0 : 1, term->weak); 1331 break; 1332 case PARSE_EVENTS__TERM_TYPE_MAX_STACK: 1333 ADD_CONFIG_TERM_VAL(MAX_STACK, max_stack, 1334 term->val.num, term->weak); 1335 break; 1336 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS: 1337 ADD_CONFIG_TERM_VAL(MAX_EVENTS, max_events, 1338 term->val.num, term->weak); 1339 break; 1340 case PARSE_EVENTS__TERM_TYPE_OVERWRITE: 1341 ADD_CONFIG_TERM_VAL(OVERWRITE, overwrite, 1342 term->val.num ? 1 : 0, term->weak); 1343 break; 1344 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE: 1345 ADD_CONFIG_TERM_VAL(OVERWRITE, overwrite, 1346 term->val.num ? 0 : 1, term->weak); 1347 break; 1348 case PARSE_EVENTS__TERM_TYPE_DRV_CFG: 1349 ADD_CONFIG_TERM_STR(DRV_CFG, term->val.str, term->weak); 1350 break; 1351 case PARSE_EVENTS__TERM_TYPE_PERCORE: 1352 ADD_CONFIG_TERM_VAL(PERCORE, percore, 1353 term->val.num ? true : false, term->weak); 1354 break; 1355 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT: 1356 ADD_CONFIG_TERM_VAL(AUX_OUTPUT, aux_output, 1357 term->val.num ? 1 : 0, term->weak); 1358 break; 1359 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE: 1360 ADD_CONFIG_TERM_VAL(AUX_SAMPLE_SIZE, aux_sample_size, 1361 term->val.num, term->weak); 1362 break; 1363 default: 1364 break; 1365 } 1366 } 1367 return 0; 1368 } 1369 1370 /* 1371 * Add EVSEL__CONFIG_TERM_CFG_CHG where cfg_chg will have a bit set for 1372 * each bit of attr->config that the user has changed. 1373 */ 1374 static int get_config_chgs(struct perf_pmu *pmu, struct list_head *head_config, 1375 struct list_head *head_terms) 1376 { 1377 struct parse_events_term *term; 1378 u64 bits = 0; 1379 int type; 1380 1381 list_for_each_entry(term, head_config, list) { 1382 switch (term->type_term) { 1383 case PARSE_EVENTS__TERM_TYPE_USER: 1384 type = perf_pmu__format_type(&pmu->format, term->config); 1385 if (type != PERF_PMU_FORMAT_VALUE_CONFIG) 1386 continue; 1387 bits |= perf_pmu__format_bits(&pmu->format, term->config); 1388 break; 1389 case PARSE_EVENTS__TERM_TYPE_CONFIG: 1390 bits = ~(u64)0; 1391 break; 1392 default: 1393 break; 1394 } 1395 } 1396 1397 if (bits) 1398 ADD_CONFIG_TERM_VAL(CFG_CHG, cfg_chg, bits, false); 1399 1400 #undef ADD_CONFIG_TERM 1401 return 0; 1402 } 1403 1404 int parse_events_add_tracepoint(struct list_head *list, int *idx, 1405 const char *sys, const char *event, 1406 struct parse_events_error *err, 1407 struct list_head *head_config) 1408 { 1409 if (head_config) { 1410 struct perf_event_attr attr; 1411 1412 if (config_attr(&attr, head_config, err, 1413 config_term_tracepoint)) 1414 return -EINVAL; 1415 } 1416 1417 if (strpbrk(sys, "*?")) 1418 return add_tracepoint_multi_sys(list, idx, sys, event, 1419 err, head_config); 1420 else 1421 return add_tracepoint_event(list, idx, sys, event, 1422 err, head_config); 1423 } 1424 1425 int parse_events_add_numeric(struct parse_events_state *parse_state, 1426 struct list_head *list, 1427 u32 type, u64 config, 1428 struct list_head *head_config) 1429 { 1430 struct perf_event_attr attr; 1431 LIST_HEAD(config_terms); 1432 const char *name, *metric_id; 1433 bool hybrid; 1434 int ret; 1435 1436 memset(&attr, 0, sizeof(attr)); 1437 attr.type = type; 1438 attr.config = config; 1439 1440 if (head_config) { 1441 if (config_attr(&attr, head_config, parse_state->error, 1442 config_term_common)) 1443 return -EINVAL; 1444 1445 if (get_config_terms(head_config, &config_terms)) 1446 return -ENOMEM; 1447 } 1448 1449 name = get_config_name(head_config); 1450 metric_id = get_config_metric_id(head_config); 1451 ret = parse_events__add_numeric_hybrid(parse_state, list, &attr, 1452 name, metric_id, 1453 &config_terms, &hybrid); 1454 if (hybrid) 1455 goto out_free_terms; 1456 1457 ret = add_event(list, &parse_state->idx, &attr, name, metric_id, 1458 &config_terms); 1459 out_free_terms: 1460 free_config_terms(&config_terms); 1461 return ret; 1462 } 1463 1464 int parse_events_add_tool(struct parse_events_state *parse_state, 1465 struct list_head *list, 1466 int tool_event) 1467 { 1468 return add_event_tool(list, &parse_state->idx, tool_event); 1469 } 1470 1471 static bool config_term_percore(struct list_head *config_terms) 1472 { 1473 struct evsel_config_term *term; 1474 1475 list_for_each_entry(term, config_terms, list) { 1476 if (term->type == EVSEL__CONFIG_TERM_PERCORE) 1477 return term->val.percore; 1478 } 1479 1480 return false; 1481 } 1482 1483 static int parse_events__inside_hybrid_pmu(struct parse_events_state *parse_state, 1484 struct list_head *list, char *name, 1485 struct list_head *head_config) 1486 { 1487 struct parse_events_term *term; 1488 int ret = -1; 1489 1490 if (parse_state->fake_pmu || !head_config || list_empty(head_config) || 1491 !perf_pmu__is_hybrid(name)) { 1492 return -1; 1493 } 1494 1495 /* 1496 * More than one term in list. 1497 */ 1498 if (head_config->next && head_config->next->next != head_config) 1499 return -1; 1500 1501 term = list_first_entry(head_config, struct parse_events_term, list); 1502 if (term && term->config && strcmp(term->config, "event")) { 1503 ret = parse_events__with_hybrid_pmu(parse_state, term->config, 1504 name, list); 1505 } 1506 1507 return ret; 1508 } 1509 1510 int parse_events_add_pmu(struct parse_events_state *parse_state, 1511 struct list_head *list, char *name, 1512 struct list_head *head_config, 1513 bool auto_merge_stats, 1514 bool use_alias) 1515 { 1516 struct perf_event_attr attr; 1517 struct perf_pmu_info info; 1518 struct perf_pmu *pmu; 1519 struct evsel *evsel; 1520 struct parse_events_error *err = parse_state->error; 1521 bool use_uncore_alias; 1522 LIST_HEAD(config_terms); 1523 1524 if (verbose > 1) { 1525 fprintf(stderr, "Attempting to add event pmu '%s' with '", 1526 name); 1527 if (head_config) { 1528 struct parse_events_term *term; 1529 1530 list_for_each_entry(term, head_config, list) { 1531 fprintf(stderr, "%s,", term->config); 1532 } 1533 } 1534 fprintf(stderr, "' that may result in non-fatal errors\n"); 1535 } 1536 1537 pmu = parse_state->fake_pmu ?: perf_pmu__find(name); 1538 if (!pmu) { 1539 char *err_str; 1540 1541 if (asprintf(&err_str, 1542 "Cannot find PMU `%s'. Missing kernel support?", 1543 name) >= 0) 1544 parse_events_error__handle(err, 0, err_str, NULL); 1545 return -EINVAL; 1546 } 1547 1548 if (pmu->default_config) { 1549 memcpy(&attr, pmu->default_config, 1550 sizeof(struct perf_event_attr)); 1551 } else { 1552 memset(&attr, 0, sizeof(attr)); 1553 } 1554 1555 use_uncore_alias = (pmu->is_uncore && use_alias); 1556 1557 if (!head_config) { 1558 attr.type = pmu->type; 1559 evsel = __add_event(list, &parse_state->idx, &attr, 1560 /*init_attr=*/true, /*name=*/NULL, 1561 /*metric_id=*/NULL, pmu, 1562 /*config_terms=*/NULL, auto_merge_stats, 1563 /*cpu_list=*/NULL); 1564 if (evsel) { 1565 evsel->pmu_name = name ? strdup(name) : NULL; 1566 evsel->use_uncore_alias = use_uncore_alias; 1567 return 0; 1568 } else { 1569 return -ENOMEM; 1570 } 1571 } 1572 1573 if (!parse_state->fake_pmu && perf_pmu__check_alias(pmu, head_config, &info)) 1574 return -EINVAL; 1575 1576 if (verbose > 1) { 1577 fprintf(stderr, "After aliases, add event pmu '%s' with '", 1578 name); 1579 if (head_config) { 1580 struct parse_events_term *term; 1581 1582 list_for_each_entry(term, head_config, list) { 1583 fprintf(stderr, "%s,", term->config); 1584 } 1585 } 1586 fprintf(stderr, "' that may result in non-fatal errors\n"); 1587 } 1588 1589 /* 1590 * Configure hardcoded terms first, no need to check 1591 * return value when called with fail == 0 ;) 1592 */ 1593 if (config_attr(&attr, head_config, parse_state->error, config_term_pmu)) 1594 return -EINVAL; 1595 1596 if (get_config_terms(head_config, &config_terms)) 1597 return -ENOMEM; 1598 1599 /* 1600 * When using default config, record which bits of attr->config were 1601 * changed by the user. 1602 */ 1603 if (pmu->default_config && get_config_chgs(pmu, head_config, &config_terms)) 1604 return -ENOMEM; 1605 1606 if (!parse_events__inside_hybrid_pmu(parse_state, list, name, 1607 head_config)) { 1608 return 0; 1609 } 1610 1611 if (!parse_state->fake_pmu && perf_pmu__config(pmu, &attr, head_config, parse_state->error)) { 1612 free_config_terms(&config_terms); 1613 return -EINVAL; 1614 } 1615 1616 evsel = __add_event(list, &parse_state->idx, &attr, /*init_attr=*/true, 1617 get_config_name(head_config), 1618 get_config_metric_id(head_config), pmu, 1619 &config_terms, auto_merge_stats, /*cpu_list=*/NULL); 1620 if (!evsel) 1621 return -ENOMEM; 1622 1623 if (evsel->name) 1624 evsel->use_config_name = true; 1625 1626 evsel->pmu_name = name ? strdup(name) : NULL; 1627 evsel->use_uncore_alias = use_uncore_alias; 1628 evsel->percore = config_term_percore(&evsel->config_terms); 1629 1630 if (parse_state->fake_pmu) 1631 return 0; 1632 1633 evsel->unit = info.unit; 1634 evsel->scale = info.scale; 1635 evsel->per_pkg = info.per_pkg; 1636 evsel->snapshot = info.snapshot; 1637 evsel->metric_expr = info.metric_expr; 1638 evsel->metric_name = info.metric_name; 1639 return 0; 1640 } 1641 1642 int parse_events_multi_pmu_add(struct parse_events_state *parse_state, 1643 char *str, struct list_head *head, 1644 struct list_head **listp) 1645 { 1646 struct parse_events_term *term; 1647 struct list_head *list = NULL; 1648 struct perf_pmu *pmu = NULL; 1649 int ok = 0; 1650 char *config; 1651 1652 *listp = NULL; 1653 1654 if (!head) { 1655 head = malloc(sizeof(struct list_head)); 1656 if (!head) 1657 goto out_err; 1658 1659 INIT_LIST_HEAD(head); 1660 } 1661 config = strdup(str); 1662 if (!config) 1663 goto out_err; 1664 1665 if (parse_events_term__num(&term, 1666 PARSE_EVENTS__TERM_TYPE_USER, 1667 config, 1, false, &config, 1668 NULL) < 0) { 1669 free(config); 1670 goto out_err; 1671 } 1672 list_add_tail(&term->list, head); 1673 1674 1675 /* Add it for all PMUs that support the alias */ 1676 list = malloc(sizeof(struct list_head)); 1677 if (!list) 1678 goto out_err; 1679 1680 INIT_LIST_HEAD(list); 1681 1682 while ((pmu = perf_pmu__scan(pmu)) != NULL) { 1683 struct perf_pmu_alias *alias; 1684 1685 list_for_each_entry(alias, &pmu->aliases, list) { 1686 if (!strcasecmp(alias->name, str)) { 1687 if (!parse_events_add_pmu(parse_state, list, 1688 pmu->name, head, 1689 true, true)) { 1690 pr_debug("%s -> %s/%s/\n", str, 1691 pmu->name, alias->str); 1692 ok++; 1693 } 1694 } 1695 } 1696 } 1697 out_err: 1698 if (ok) 1699 *listp = list; 1700 else 1701 free(list); 1702 1703 parse_events_terms__delete(head); 1704 return ok ? 0 : -1; 1705 } 1706 1707 int parse_events__modifier_group(struct list_head *list, 1708 char *event_mod) 1709 { 1710 return parse_events__modifier_event(list, event_mod, true); 1711 } 1712 1713 /* 1714 * Check if the two uncore PMUs are from the same uncore block 1715 * The format of the uncore PMU name is uncore_#blockname_#pmuidx 1716 */ 1717 static bool is_same_uncore_block(const char *pmu_name_a, const char *pmu_name_b) 1718 { 1719 char *end_a, *end_b; 1720 1721 end_a = strrchr(pmu_name_a, '_'); 1722 end_b = strrchr(pmu_name_b, '_'); 1723 1724 if (!end_a || !end_b) 1725 return false; 1726 1727 if ((end_a - pmu_name_a) != (end_b - pmu_name_b)) 1728 return false; 1729 1730 return (strncmp(pmu_name_a, pmu_name_b, end_a - pmu_name_a) == 0); 1731 } 1732 1733 static int 1734 parse_events__set_leader_for_uncore_aliase(char *name, struct list_head *list, 1735 struct parse_events_state *parse_state) 1736 { 1737 struct evsel *evsel, *leader; 1738 uintptr_t *leaders; 1739 bool is_leader = true; 1740 int i, nr_pmu = 0, total_members, ret = 0; 1741 1742 leader = list_first_entry(list, struct evsel, core.node); 1743 evsel = list_last_entry(list, struct evsel, core.node); 1744 total_members = evsel->core.idx - leader->core.idx + 1; 1745 1746 leaders = calloc(total_members, sizeof(uintptr_t)); 1747 if (WARN_ON(!leaders)) 1748 return 0; 1749 1750 /* 1751 * Going through the whole group and doing sanity check. 1752 * All members must use alias, and be from the same uncore block. 1753 * Also, storing the leader events in an array. 1754 */ 1755 __evlist__for_each_entry(list, evsel) { 1756 1757 /* Only split the uncore group which members use alias */ 1758 if (!evsel->use_uncore_alias) 1759 goto out; 1760 1761 /* The events must be from the same uncore block */ 1762 if (!is_same_uncore_block(leader->pmu_name, evsel->pmu_name)) 1763 goto out; 1764 1765 if (!is_leader) 1766 continue; 1767 /* 1768 * If the event's PMU name starts to repeat, it must be a new 1769 * event. That can be used to distinguish the leader from 1770 * other members, even they have the same event name. 1771 */ 1772 if ((leader != evsel) && 1773 !strcmp(leader->pmu_name, evsel->pmu_name)) { 1774 is_leader = false; 1775 continue; 1776 } 1777 1778 /* Store the leader event for each PMU */ 1779 leaders[nr_pmu++] = (uintptr_t) evsel; 1780 } 1781 1782 /* only one event alias */ 1783 if (nr_pmu == total_members) { 1784 parse_state->nr_groups--; 1785 goto handled; 1786 } 1787 1788 /* 1789 * An uncore event alias is a joint name which means the same event 1790 * runs on all PMUs of a block. 1791 * Perf doesn't support mixed events from different PMUs in the same 1792 * group. The big group has to be split into multiple small groups 1793 * which only include the events from the same PMU. 1794 * 1795 * Here the uncore event aliases must be from the same uncore block. 1796 * The number of PMUs must be same for each alias. The number of new 1797 * small groups equals to the number of PMUs. 1798 * Setting the leader event for corresponding members in each group. 1799 */ 1800 i = 0; 1801 __evlist__for_each_entry(list, evsel) { 1802 if (i >= nr_pmu) 1803 i = 0; 1804 evsel__set_leader(evsel, (struct evsel *) leaders[i++]); 1805 } 1806 1807 /* The number of members and group name are same for each group */ 1808 for (i = 0; i < nr_pmu; i++) { 1809 evsel = (struct evsel *) leaders[i]; 1810 evsel->core.nr_members = total_members / nr_pmu; 1811 evsel->group_name = name ? strdup(name) : NULL; 1812 } 1813 1814 /* Take the new small groups into account */ 1815 parse_state->nr_groups += nr_pmu - 1; 1816 1817 handled: 1818 ret = 1; 1819 out: 1820 free(leaders); 1821 return ret; 1822 } 1823 1824 void parse_events__set_leader(char *name, struct list_head *list, 1825 struct parse_events_state *parse_state) 1826 { 1827 struct evsel *leader; 1828 1829 if (list_empty(list)) { 1830 WARN_ONCE(true, "WARNING: failed to set leader: empty list"); 1831 return; 1832 } 1833 1834 if (parse_events__set_leader_for_uncore_aliase(name, list, parse_state)) 1835 return; 1836 1837 __perf_evlist__set_leader(list); 1838 leader = list_entry(list->next, struct evsel, core.node); 1839 leader->group_name = name ? strdup(name) : NULL; 1840 } 1841 1842 /* list_event is assumed to point to malloc'ed memory */ 1843 void parse_events_update_lists(struct list_head *list_event, 1844 struct list_head *list_all) 1845 { 1846 /* 1847 * Called for single event definition. Update the 1848 * 'all event' list, and reinit the 'single event' 1849 * list, for next event definition. 1850 */ 1851 list_splice_tail(list_event, list_all); 1852 free(list_event); 1853 } 1854 1855 struct event_modifier { 1856 int eu; 1857 int ek; 1858 int eh; 1859 int eH; 1860 int eG; 1861 int eI; 1862 int precise; 1863 int precise_max; 1864 int exclude_GH; 1865 int sample_read; 1866 int pinned; 1867 int weak; 1868 int exclusive; 1869 int bpf_counter; 1870 }; 1871 1872 static int get_event_modifier(struct event_modifier *mod, char *str, 1873 struct evsel *evsel) 1874 { 1875 int eu = evsel ? evsel->core.attr.exclude_user : 0; 1876 int ek = evsel ? evsel->core.attr.exclude_kernel : 0; 1877 int eh = evsel ? evsel->core.attr.exclude_hv : 0; 1878 int eH = evsel ? evsel->core.attr.exclude_host : 0; 1879 int eG = evsel ? evsel->core.attr.exclude_guest : 0; 1880 int eI = evsel ? evsel->core.attr.exclude_idle : 0; 1881 int precise = evsel ? evsel->core.attr.precise_ip : 0; 1882 int precise_max = 0; 1883 int sample_read = 0; 1884 int pinned = evsel ? evsel->core.attr.pinned : 0; 1885 int exclusive = evsel ? evsel->core.attr.exclusive : 0; 1886 1887 int exclude = eu | ek | eh; 1888 int exclude_GH = evsel ? evsel->exclude_GH : 0; 1889 int weak = 0; 1890 int bpf_counter = 0; 1891 1892 memset(mod, 0, sizeof(*mod)); 1893 1894 while (*str) { 1895 if (*str == 'u') { 1896 if (!exclude) 1897 exclude = eu = ek = eh = 1; 1898 if (!exclude_GH && !perf_guest) 1899 eG = 1; 1900 eu = 0; 1901 } else if (*str == 'k') { 1902 if (!exclude) 1903 exclude = eu = ek = eh = 1; 1904 ek = 0; 1905 } else if (*str == 'h') { 1906 if (!exclude) 1907 exclude = eu = ek = eh = 1; 1908 eh = 0; 1909 } else if (*str == 'G') { 1910 if (!exclude_GH) 1911 exclude_GH = eG = eH = 1; 1912 eG = 0; 1913 } else if (*str == 'H') { 1914 if (!exclude_GH) 1915 exclude_GH = eG = eH = 1; 1916 eH = 0; 1917 } else if (*str == 'I') { 1918 eI = 1; 1919 } else if (*str == 'p') { 1920 precise++; 1921 /* use of precise requires exclude_guest */ 1922 if (!exclude_GH) 1923 eG = 1; 1924 } else if (*str == 'P') { 1925 precise_max = 1; 1926 } else if (*str == 'S') { 1927 sample_read = 1; 1928 } else if (*str == 'D') { 1929 pinned = 1; 1930 } else if (*str == 'e') { 1931 exclusive = 1; 1932 } else if (*str == 'W') { 1933 weak = 1; 1934 } else if (*str == 'b') { 1935 bpf_counter = 1; 1936 } else 1937 break; 1938 1939 ++str; 1940 } 1941 1942 /* 1943 * precise ip: 1944 * 1945 * 0 - SAMPLE_IP can have arbitrary skid 1946 * 1 - SAMPLE_IP must have constant skid 1947 * 2 - SAMPLE_IP requested to have 0 skid 1948 * 3 - SAMPLE_IP must have 0 skid 1949 * 1950 * See also PERF_RECORD_MISC_EXACT_IP 1951 */ 1952 if (precise > 3) 1953 return -EINVAL; 1954 1955 mod->eu = eu; 1956 mod->ek = ek; 1957 mod->eh = eh; 1958 mod->eH = eH; 1959 mod->eG = eG; 1960 mod->eI = eI; 1961 mod->precise = precise; 1962 mod->precise_max = precise_max; 1963 mod->exclude_GH = exclude_GH; 1964 mod->sample_read = sample_read; 1965 mod->pinned = pinned; 1966 mod->weak = weak; 1967 mod->bpf_counter = bpf_counter; 1968 mod->exclusive = exclusive; 1969 1970 return 0; 1971 } 1972 1973 /* 1974 * Basic modifier sanity check to validate it contains only one 1975 * instance of any modifier (apart from 'p') present. 1976 */ 1977 static int check_modifier(char *str) 1978 { 1979 char *p = str; 1980 1981 /* The sizeof includes 0 byte as well. */ 1982 if (strlen(str) > (sizeof("ukhGHpppPSDIWeb") - 1)) 1983 return -1; 1984 1985 while (*p) { 1986 if (*p != 'p' && strchr(p + 1, *p)) 1987 return -1; 1988 p++; 1989 } 1990 1991 return 0; 1992 } 1993 1994 int parse_events__modifier_event(struct list_head *list, char *str, bool add) 1995 { 1996 struct evsel *evsel; 1997 struct event_modifier mod; 1998 1999 if (str == NULL) 2000 return 0; 2001 2002 if (check_modifier(str)) 2003 return -EINVAL; 2004 2005 if (!add && get_event_modifier(&mod, str, NULL)) 2006 return -EINVAL; 2007 2008 __evlist__for_each_entry(list, evsel) { 2009 if (add && get_event_modifier(&mod, str, evsel)) 2010 return -EINVAL; 2011 2012 evsel->core.attr.exclude_user = mod.eu; 2013 evsel->core.attr.exclude_kernel = mod.ek; 2014 evsel->core.attr.exclude_hv = mod.eh; 2015 evsel->core.attr.precise_ip = mod.precise; 2016 evsel->core.attr.exclude_host = mod.eH; 2017 evsel->core.attr.exclude_guest = mod.eG; 2018 evsel->core.attr.exclude_idle = mod.eI; 2019 evsel->exclude_GH = mod.exclude_GH; 2020 evsel->sample_read = mod.sample_read; 2021 evsel->precise_max = mod.precise_max; 2022 evsel->weak_group = mod.weak; 2023 evsel->bpf_counter = mod.bpf_counter; 2024 2025 if (evsel__is_group_leader(evsel)) { 2026 evsel->core.attr.pinned = mod.pinned; 2027 evsel->core.attr.exclusive = mod.exclusive; 2028 } 2029 } 2030 2031 return 0; 2032 } 2033 2034 int parse_events_name(struct list_head *list, const char *name) 2035 { 2036 struct evsel *evsel; 2037 2038 __evlist__for_each_entry(list, evsel) { 2039 if (!evsel->name) 2040 evsel->name = strdup(name); 2041 } 2042 2043 return 0; 2044 } 2045 2046 static int 2047 comp_pmu(const void *p1, const void *p2) 2048 { 2049 struct perf_pmu_event_symbol *pmu1 = (struct perf_pmu_event_symbol *) p1; 2050 struct perf_pmu_event_symbol *pmu2 = (struct perf_pmu_event_symbol *) p2; 2051 2052 return strcasecmp(pmu1->symbol, pmu2->symbol); 2053 } 2054 2055 static void perf_pmu__parse_cleanup(void) 2056 { 2057 if (perf_pmu_events_list_num > 0) { 2058 struct perf_pmu_event_symbol *p; 2059 int i; 2060 2061 for (i = 0; i < perf_pmu_events_list_num; i++) { 2062 p = perf_pmu_events_list + i; 2063 zfree(&p->symbol); 2064 } 2065 zfree(&perf_pmu_events_list); 2066 perf_pmu_events_list_num = 0; 2067 } 2068 } 2069 2070 #define SET_SYMBOL(str, stype) \ 2071 do { \ 2072 p->symbol = str; \ 2073 if (!p->symbol) \ 2074 goto err; \ 2075 p->type = stype; \ 2076 } while (0) 2077 2078 /* 2079 * Read the pmu events list from sysfs 2080 * Save it into perf_pmu_events_list 2081 */ 2082 static void perf_pmu__parse_init(void) 2083 { 2084 2085 struct perf_pmu *pmu = NULL; 2086 struct perf_pmu_alias *alias; 2087 int len = 0; 2088 2089 pmu = NULL; 2090 while ((pmu = perf_pmu__scan(pmu)) != NULL) { 2091 list_for_each_entry(alias, &pmu->aliases, list) { 2092 if (strchr(alias->name, '-')) 2093 len++; 2094 len++; 2095 } 2096 } 2097 2098 if (len == 0) { 2099 perf_pmu_events_list_num = -1; 2100 return; 2101 } 2102 perf_pmu_events_list = malloc(sizeof(struct perf_pmu_event_symbol) * len); 2103 if (!perf_pmu_events_list) 2104 return; 2105 perf_pmu_events_list_num = len; 2106 2107 len = 0; 2108 pmu = NULL; 2109 while ((pmu = perf_pmu__scan(pmu)) != NULL) { 2110 list_for_each_entry(alias, &pmu->aliases, list) { 2111 struct perf_pmu_event_symbol *p = perf_pmu_events_list + len; 2112 char *tmp = strchr(alias->name, '-'); 2113 2114 if (tmp != NULL) { 2115 SET_SYMBOL(strndup(alias->name, tmp - alias->name), 2116 PMU_EVENT_SYMBOL_PREFIX); 2117 p++; 2118 SET_SYMBOL(strdup(++tmp), PMU_EVENT_SYMBOL_SUFFIX); 2119 len += 2; 2120 } else { 2121 SET_SYMBOL(strdup(alias->name), PMU_EVENT_SYMBOL); 2122 len++; 2123 } 2124 } 2125 } 2126 qsort(perf_pmu_events_list, len, 2127 sizeof(struct perf_pmu_event_symbol), comp_pmu); 2128 2129 return; 2130 err: 2131 perf_pmu__parse_cleanup(); 2132 } 2133 2134 /* 2135 * This function injects special term in 2136 * perf_pmu_events_list so the test code 2137 * can check on this functionality. 2138 */ 2139 int perf_pmu__test_parse_init(void) 2140 { 2141 struct perf_pmu_event_symbol *list; 2142 2143 list = malloc(sizeof(*list) * 1); 2144 if (!list) 2145 return -ENOMEM; 2146 2147 list->type = PMU_EVENT_SYMBOL; 2148 list->symbol = strdup("read"); 2149 2150 if (!list->symbol) { 2151 free(list); 2152 return -ENOMEM; 2153 } 2154 2155 perf_pmu_events_list = list; 2156 perf_pmu_events_list_num = 1; 2157 return 0; 2158 } 2159 2160 enum perf_pmu_event_symbol_type 2161 perf_pmu__parse_check(const char *name) 2162 { 2163 struct perf_pmu_event_symbol p, *r; 2164 2165 /* scan kernel pmu events from sysfs if needed */ 2166 if (perf_pmu_events_list_num == 0) 2167 perf_pmu__parse_init(); 2168 /* 2169 * name "cpu" could be prefix of cpu-cycles or cpu// events. 2170 * cpu-cycles has been handled by hardcode. 2171 * So it must be cpu// events, not kernel pmu event. 2172 */ 2173 if ((perf_pmu_events_list_num <= 0) || !strcmp(name, "cpu")) 2174 return PMU_EVENT_SYMBOL_ERR; 2175 2176 p.symbol = strdup(name); 2177 r = bsearch(&p, perf_pmu_events_list, 2178 (size_t) perf_pmu_events_list_num, 2179 sizeof(struct perf_pmu_event_symbol), comp_pmu); 2180 zfree(&p.symbol); 2181 return r ? r->type : PMU_EVENT_SYMBOL_ERR; 2182 } 2183 2184 static int parse_events__scanner(const char *str, 2185 struct parse_events_state *parse_state) 2186 { 2187 YY_BUFFER_STATE buffer; 2188 void *scanner; 2189 int ret; 2190 2191 ret = parse_events_lex_init_extra(parse_state, &scanner); 2192 if (ret) 2193 return ret; 2194 2195 buffer = parse_events__scan_string(str, scanner); 2196 2197 #ifdef PARSER_DEBUG 2198 parse_events_debug = 1; 2199 parse_events_set_debug(1, scanner); 2200 #endif 2201 ret = parse_events_parse(parse_state, scanner); 2202 2203 parse_events__flush_buffer(buffer, scanner); 2204 parse_events__delete_buffer(buffer, scanner); 2205 parse_events_lex_destroy(scanner); 2206 return ret; 2207 } 2208 2209 /* 2210 * parse event config string, return a list of event terms. 2211 */ 2212 int parse_events_terms(struct list_head *terms, const char *str) 2213 { 2214 struct parse_events_state parse_state = { 2215 .terms = NULL, 2216 .stoken = PE_START_TERMS, 2217 }; 2218 int ret; 2219 2220 ret = parse_events__scanner(str, &parse_state); 2221 perf_pmu__parse_cleanup(); 2222 2223 if (!ret) { 2224 list_splice(parse_state.terms, terms); 2225 zfree(&parse_state.terms); 2226 return 0; 2227 } 2228 2229 parse_events_terms__delete(parse_state.terms); 2230 return ret; 2231 } 2232 2233 static int parse_events__with_hybrid_pmu(struct parse_events_state *parse_state, 2234 const char *str, char *pmu_name, 2235 struct list_head *list) 2236 { 2237 struct parse_events_state ps = { 2238 .list = LIST_HEAD_INIT(ps.list), 2239 .stoken = PE_START_EVENTS, 2240 .hybrid_pmu_name = pmu_name, 2241 .idx = parse_state->idx, 2242 }; 2243 int ret; 2244 2245 ret = parse_events__scanner(str, &ps); 2246 perf_pmu__parse_cleanup(); 2247 2248 if (!ret) { 2249 if (!list_empty(&ps.list)) { 2250 list_splice(&ps.list, list); 2251 parse_state->idx = ps.idx; 2252 return 0; 2253 } else 2254 return -1; 2255 } 2256 2257 return ret; 2258 } 2259 2260 int __parse_events(struct evlist *evlist, const char *str, 2261 struct parse_events_error *err, struct perf_pmu *fake_pmu) 2262 { 2263 struct parse_events_state parse_state = { 2264 .list = LIST_HEAD_INIT(parse_state.list), 2265 .idx = evlist->core.nr_entries, 2266 .error = err, 2267 .evlist = evlist, 2268 .stoken = PE_START_EVENTS, 2269 .fake_pmu = fake_pmu, 2270 }; 2271 int ret; 2272 2273 ret = parse_events__scanner(str, &parse_state); 2274 perf_pmu__parse_cleanup(); 2275 2276 if (!ret && list_empty(&parse_state.list)) { 2277 WARN_ONCE(true, "WARNING: event parser found nothing\n"); 2278 return -1; 2279 } 2280 2281 /* 2282 * Add list to the evlist even with errors to allow callers to clean up. 2283 */ 2284 evlist__splice_list_tail(evlist, &parse_state.list); 2285 2286 if (!ret) { 2287 struct evsel *last; 2288 2289 evlist->core.nr_groups += parse_state.nr_groups; 2290 last = evlist__last(evlist); 2291 last->cmdline_group_boundary = true; 2292 2293 return 0; 2294 } 2295 2296 /* 2297 * There are 2 users - builtin-record and builtin-test objects. 2298 * Both call evlist__delete in case of error, so we dont 2299 * need to bother. 2300 */ 2301 return ret; 2302 } 2303 2304 void parse_events_error__init(struct parse_events_error *err) 2305 { 2306 bzero(err, sizeof(*err)); 2307 } 2308 2309 void parse_events_error__exit(struct parse_events_error *err) 2310 { 2311 zfree(&err->str); 2312 zfree(&err->help); 2313 zfree(&err->first_str); 2314 zfree(&err->first_help); 2315 } 2316 2317 void parse_events_error__handle(struct parse_events_error *err, int idx, 2318 char *str, char *help) 2319 { 2320 if (WARN(!str, "WARNING: failed to provide error string\n")) { 2321 free(help); 2322 return; 2323 } 2324 switch (err->num_errors) { 2325 case 0: 2326 err->idx = idx; 2327 err->str = str; 2328 err->help = help; 2329 break; 2330 case 1: 2331 err->first_idx = err->idx; 2332 err->idx = idx; 2333 err->first_str = err->str; 2334 err->str = str; 2335 err->first_help = err->help; 2336 err->help = help; 2337 break; 2338 default: 2339 pr_debug("Multiple errors dropping message: %s (%s)\n", 2340 err->str, err->help); 2341 free(err->str); 2342 err->str = str; 2343 free(err->help); 2344 err->help = help; 2345 break; 2346 } 2347 err->num_errors++; 2348 } 2349 2350 #define MAX_WIDTH 1000 2351 static int get_term_width(void) 2352 { 2353 struct winsize ws; 2354 2355 get_term_dimensions(&ws); 2356 return ws.ws_col > MAX_WIDTH ? MAX_WIDTH : ws.ws_col; 2357 } 2358 2359 static void __parse_events_error__print(int err_idx, const char *err_str, 2360 const char *err_help, const char *event) 2361 { 2362 const char *str = "invalid or unsupported event: "; 2363 char _buf[MAX_WIDTH]; 2364 char *buf = (char *) event; 2365 int idx = 0; 2366 if (err_str) { 2367 /* -2 for extra '' in the final fprintf */ 2368 int width = get_term_width() - 2; 2369 int len_event = strlen(event); 2370 int len_str, max_len, cut = 0; 2371 2372 /* 2373 * Maximum error index indent, we will cut 2374 * the event string if it's bigger. 2375 */ 2376 int max_err_idx = 13; 2377 2378 /* 2379 * Let's be specific with the message when 2380 * we have the precise error. 2381 */ 2382 str = "event syntax error: "; 2383 len_str = strlen(str); 2384 max_len = width - len_str; 2385 2386 buf = _buf; 2387 2388 /* We're cutting from the beginning. */ 2389 if (err_idx > max_err_idx) 2390 cut = err_idx - max_err_idx; 2391 2392 strncpy(buf, event + cut, max_len); 2393 2394 /* Mark cut parts with '..' on both sides. */ 2395 if (cut) 2396 buf[0] = buf[1] = '.'; 2397 2398 if ((len_event - cut) > max_len) { 2399 buf[max_len - 1] = buf[max_len - 2] = '.'; 2400 buf[max_len] = 0; 2401 } 2402 2403 idx = len_str + err_idx - cut; 2404 } 2405 2406 fprintf(stderr, "%s'%s'\n", str, buf); 2407 if (idx) { 2408 fprintf(stderr, "%*s\\___ %s\n", idx + 1, "", err_str); 2409 if (err_help) 2410 fprintf(stderr, "\n%s\n", err_help); 2411 } 2412 } 2413 2414 void parse_events_error__print(struct parse_events_error *err, 2415 const char *event) 2416 { 2417 if (!err->num_errors) 2418 return; 2419 2420 __parse_events_error__print(err->idx, err->str, err->help, event); 2421 2422 if (err->num_errors > 1) { 2423 fputs("\nInitial error:\n", stderr); 2424 __parse_events_error__print(err->first_idx, err->first_str, 2425 err->first_help, event); 2426 } 2427 } 2428 2429 #undef MAX_WIDTH 2430 2431 int parse_events_option(const struct option *opt, const char *str, 2432 int unset __maybe_unused) 2433 { 2434 struct evlist *evlist = *(struct evlist **)opt->value; 2435 struct parse_events_error err; 2436 int ret; 2437 2438 parse_events_error__init(&err); 2439 ret = parse_events(evlist, str, &err); 2440 2441 if (ret) { 2442 parse_events_error__print(&err, str); 2443 fprintf(stderr, "Run 'perf list' for a list of valid events\n"); 2444 } 2445 parse_events_error__exit(&err); 2446 2447 return ret; 2448 } 2449 2450 int parse_events_option_new_evlist(const struct option *opt, const char *str, int unset) 2451 { 2452 struct evlist **evlistp = opt->value; 2453 int ret; 2454 2455 if (*evlistp == NULL) { 2456 *evlistp = evlist__new(); 2457 2458 if (*evlistp == NULL) { 2459 fprintf(stderr, "Not enough memory to create evlist\n"); 2460 return -1; 2461 } 2462 } 2463 2464 ret = parse_events_option(opt, str, unset); 2465 if (ret) { 2466 evlist__delete(*evlistp); 2467 *evlistp = NULL; 2468 } 2469 2470 return ret; 2471 } 2472 2473 static int 2474 foreach_evsel_in_last_glob(struct evlist *evlist, 2475 int (*func)(struct evsel *evsel, 2476 const void *arg), 2477 const void *arg) 2478 { 2479 struct evsel *last = NULL; 2480 int err; 2481 2482 /* 2483 * Don't return when list_empty, give func a chance to report 2484 * error when it found last == NULL. 2485 * 2486 * So no need to WARN here, let *func do this. 2487 */ 2488 if (evlist->core.nr_entries > 0) 2489 last = evlist__last(evlist); 2490 2491 do { 2492 err = (*func)(last, arg); 2493 if (err) 2494 return -1; 2495 if (!last) 2496 return 0; 2497 2498 if (last->core.node.prev == &evlist->core.entries) 2499 return 0; 2500 last = list_entry(last->core.node.prev, struct evsel, core.node); 2501 } while (!last->cmdline_group_boundary); 2502 2503 return 0; 2504 } 2505 2506 static int set_filter(struct evsel *evsel, const void *arg) 2507 { 2508 const char *str = arg; 2509 bool found = false; 2510 int nr_addr_filters = 0; 2511 struct perf_pmu *pmu = NULL; 2512 2513 if (evsel == NULL) { 2514 fprintf(stderr, 2515 "--filter option should follow a -e tracepoint or HW tracer option\n"); 2516 return -1; 2517 } 2518 2519 if (evsel->core.attr.type == PERF_TYPE_TRACEPOINT) { 2520 if (evsel__append_tp_filter(evsel, str) < 0) { 2521 fprintf(stderr, 2522 "not enough memory to hold filter string\n"); 2523 return -1; 2524 } 2525 2526 return 0; 2527 } 2528 2529 while ((pmu = perf_pmu__scan(pmu)) != NULL) 2530 if (pmu->type == evsel->core.attr.type) { 2531 found = true; 2532 break; 2533 } 2534 2535 if (found) 2536 perf_pmu__scan_file(pmu, "nr_addr_filters", 2537 "%d", &nr_addr_filters); 2538 2539 if (!nr_addr_filters) { 2540 fprintf(stderr, 2541 "This CPU does not support address filtering\n"); 2542 return -1; 2543 } 2544 2545 if (evsel__append_addr_filter(evsel, str) < 0) { 2546 fprintf(stderr, 2547 "not enough memory to hold filter string\n"); 2548 return -1; 2549 } 2550 2551 return 0; 2552 } 2553 2554 int parse_filter(const struct option *opt, const char *str, 2555 int unset __maybe_unused) 2556 { 2557 struct evlist *evlist = *(struct evlist **)opt->value; 2558 2559 return foreach_evsel_in_last_glob(evlist, set_filter, 2560 (const void *)str); 2561 } 2562 2563 static int add_exclude_perf_filter(struct evsel *evsel, 2564 const void *arg __maybe_unused) 2565 { 2566 char new_filter[64]; 2567 2568 if (evsel == NULL || evsel->core.attr.type != PERF_TYPE_TRACEPOINT) { 2569 fprintf(stderr, 2570 "--exclude-perf option should follow a -e tracepoint option\n"); 2571 return -1; 2572 } 2573 2574 snprintf(new_filter, sizeof(new_filter), "common_pid != %d", getpid()); 2575 2576 if (evsel__append_tp_filter(evsel, new_filter) < 0) { 2577 fprintf(stderr, 2578 "not enough memory to hold filter string\n"); 2579 return -1; 2580 } 2581 2582 return 0; 2583 } 2584 2585 int exclude_perf(const struct option *opt, 2586 const char *arg __maybe_unused, 2587 int unset __maybe_unused) 2588 { 2589 struct evlist *evlist = *(struct evlist **)opt->value; 2590 2591 return foreach_evsel_in_last_glob(evlist, add_exclude_perf_filter, 2592 NULL); 2593 } 2594 2595 static const char * const event_type_descriptors[] = { 2596 "Hardware event", 2597 "Software event", 2598 "Tracepoint event", 2599 "Hardware cache event", 2600 "Raw hardware event descriptor", 2601 "Hardware breakpoint", 2602 }; 2603 2604 static int cmp_string(const void *a, const void *b) 2605 { 2606 const char * const *as = a; 2607 const char * const *bs = b; 2608 2609 return strcmp(*as, *bs); 2610 } 2611 2612 /* 2613 * Print the events from <debugfs_mount_point>/tracing/events 2614 */ 2615 2616 void print_tracepoint_events(const char *subsys_glob, const char *event_glob, 2617 bool name_only) 2618 { 2619 DIR *sys_dir, *evt_dir; 2620 struct dirent *sys_dirent, *evt_dirent; 2621 char evt_path[MAXPATHLEN]; 2622 char *dir_path; 2623 char **evt_list = NULL; 2624 unsigned int evt_i = 0, evt_num = 0; 2625 bool evt_num_known = false; 2626 2627 restart: 2628 sys_dir = tracing_events__opendir(); 2629 if (!sys_dir) 2630 return; 2631 2632 if (evt_num_known) { 2633 evt_list = zalloc(sizeof(char *) * evt_num); 2634 if (!evt_list) 2635 goto out_close_sys_dir; 2636 } 2637 2638 for_each_subsystem(sys_dir, sys_dirent) { 2639 if (subsys_glob != NULL && 2640 !strglobmatch(sys_dirent->d_name, subsys_glob)) 2641 continue; 2642 2643 dir_path = get_events_file(sys_dirent->d_name); 2644 if (!dir_path) 2645 continue; 2646 evt_dir = opendir(dir_path); 2647 if (!evt_dir) 2648 goto next; 2649 2650 for_each_event(dir_path, evt_dir, evt_dirent) { 2651 if (event_glob != NULL && 2652 !strglobmatch(evt_dirent->d_name, event_glob)) 2653 continue; 2654 2655 if (!evt_num_known) { 2656 evt_num++; 2657 continue; 2658 } 2659 2660 snprintf(evt_path, MAXPATHLEN, "%s:%s", 2661 sys_dirent->d_name, evt_dirent->d_name); 2662 2663 evt_list[evt_i] = strdup(evt_path); 2664 if (evt_list[evt_i] == NULL) { 2665 put_events_file(dir_path); 2666 goto out_close_evt_dir; 2667 } 2668 evt_i++; 2669 } 2670 closedir(evt_dir); 2671 next: 2672 put_events_file(dir_path); 2673 } 2674 closedir(sys_dir); 2675 2676 if (!evt_num_known) { 2677 evt_num_known = true; 2678 goto restart; 2679 } 2680 qsort(evt_list, evt_num, sizeof(char *), cmp_string); 2681 evt_i = 0; 2682 while (evt_i < evt_num) { 2683 if (name_only) { 2684 printf("%s ", evt_list[evt_i++]); 2685 continue; 2686 } 2687 printf(" %-50s [%s]\n", evt_list[evt_i++], 2688 event_type_descriptors[PERF_TYPE_TRACEPOINT]); 2689 } 2690 if (evt_num && pager_in_use()) 2691 printf("\n"); 2692 2693 out_free: 2694 evt_num = evt_i; 2695 for (evt_i = 0; evt_i < evt_num; evt_i++) 2696 zfree(&evt_list[evt_i]); 2697 zfree(&evt_list); 2698 return; 2699 2700 out_close_evt_dir: 2701 closedir(evt_dir); 2702 out_close_sys_dir: 2703 closedir(sys_dir); 2704 2705 printf("FATAL: not enough memory to print %s\n", 2706 event_type_descriptors[PERF_TYPE_TRACEPOINT]); 2707 if (evt_list) 2708 goto out_free; 2709 } 2710 2711 /* 2712 * Check whether event is in <debugfs_mount_point>/tracing/events 2713 */ 2714 2715 int is_valid_tracepoint(const char *event_string) 2716 { 2717 DIR *sys_dir, *evt_dir; 2718 struct dirent *sys_dirent, *evt_dirent; 2719 char evt_path[MAXPATHLEN]; 2720 char *dir_path; 2721 2722 sys_dir = tracing_events__opendir(); 2723 if (!sys_dir) 2724 return 0; 2725 2726 for_each_subsystem(sys_dir, sys_dirent) { 2727 dir_path = get_events_file(sys_dirent->d_name); 2728 if (!dir_path) 2729 continue; 2730 evt_dir = opendir(dir_path); 2731 if (!evt_dir) 2732 goto next; 2733 2734 for_each_event(dir_path, evt_dir, evt_dirent) { 2735 snprintf(evt_path, MAXPATHLEN, "%s:%s", 2736 sys_dirent->d_name, evt_dirent->d_name); 2737 if (!strcmp(evt_path, event_string)) { 2738 closedir(evt_dir); 2739 closedir(sys_dir); 2740 return 1; 2741 } 2742 } 2743 closedir(evt_dir); 2744 next: 2745 put_events_file(dir_path); 2746 } 2747 closedir(sys_dir); 2748 return 0; 2749 } 2750 2751 static bool is_event_supported(u8 type, u64 config) 2752 { 2753 bool ret = true; 2754 int open_return; 2755 struct evsel *evsel; 2756 struct perf_event_attr attr = { 2757 .type = type, 2758 .config = config, 2759 .disabled = 1, 2760 }; 2761 struct perf_thread_map *tmap = thread_map__new_by_tid(0); 2762 2763 if (tmap == NULL) 2764 return false; 2765 2766 evsel = evsel__new(&attr); 2767 if (evsel) { 2768 open_return = evsel__open(evsel, NULL, tmap); 2769 ret = open_return >= 0; 2770 2771 if (open_return == -EACCES) { 2772 /* 2773 * This happens if the paranoid value 2774 * /proc/sys/kernel/perf_event_paranoid is set to 2 2775 * Re-run with exclude_kernel set; we don't do that 2776 * by default as some ARM machines do not support it. 2777 * 2778 */ 2779 evsel->core.attr.exclude_kernel = 1; 2780 ret = evsel__open(evsel, NULL, tmap) >= 0; 2781 } 2782 evsel__delete(evsel); 2783 } 2784 2785 perf_thread_map__put(tmap); 2786 return ret; 2787 } 2788 2789 void print_sdt_events(const char *subsys_glob, const char *event_glob, 2790 bool name_only) 2791 { 2792 struct probe_cache *pcache; 2793 struct probe_cache_entry *ent; 2794 struct strlist *bidlist, *sdtlist; 2795 struct strlist_config cfg = {.dont_dupstr = true}; 2796 struct str_node *nd, *nd2; 2797 char *buf, *path, *ptr = NULL; 2798 bool show_detail = false; 2799 int ret; 2800 2801 sdtlist = strlist__new(NULL, &cfg); 2802 if (!sdtlist) { 2803 pr_debug("Failed to allocate new strlist for SDT\n"); 2804 return; 2805 } 2806 bidlist = build_id_cache__list_all(true); 2807 if (!bidlist) { 2808 pr_debug("Failed to get buildids: %d\n", errno); 2809 return; 2810 } 2811 strlist__for_each_entry(nd, bidlist) { 2812 pcache = probe_cache__new(nd->s, NULL); 2813 if (!pcache) 2814 continue; 2815 list_for_each_entry(ent, &pcache->entries, node) { 2816 if (!ent->sdt) 2817 continue; 2818 if (subsys_glob && 2819 !strglobmatch(ent->pev.group, subsys_glob)) 2820 continue; 2821 if (event_glob && 2822 !strglobmatch(ent->pev.event, event_glob)) 2823 continue; 2824 ret = asprintf(&buf, "%s:%s@%s", ent->pev.group, 2825 ent->pev.event, nd->s); 2826 if (ret > 0) 2827 strlist__add(sdtlist, buf); 2828 } 2829 probe_cache__delete(pcache); 2830 } 2831 strlist__delete(bidlist); 2832 2833 strlist__for_each_entry(nd, sdtlist) { 2834 buf = strchr(nd->s, '@'); 2835 if (buf) 2836 *(buf++) = '\0'; 2837 if (name_only) { 2838 printf("%s ", nd->s); 2839 continue; 2840 } 2841 nd2 = strlist__next(nd); 2842 if (nd2) { 2843 ptr = strchr(nd2->s, '@'); 2844 if (ptr) 2845 *ptr = '\0'; 2846 if (strcmp(nd->s, nd2->s) == 0) 2847 show_detail = true; 2848 } 2849 if (show_detail) { 2850 path = build_id_cache__origname(buf); 2851 ret = asprintf(&buf, "%s@%s(%.12s)", nd->s, path, buf); 2852 if (ret > 0) { 2853 printf(" %-50s [%s]\n", buf, "SDT event"); 2854 free(buf); 2855 } 2856 free(path); 2857 } else 2858 printf(" %-50s [%s]\n", nd->s, "SDT event"); 2859 if (nd2) { 2860 if (strcmp(nd->s, nd2->s) != 0) 2861 show_detail = false; 2862 if (ptr) 2863 *ptr = '@'; 2864 } 2865 } 2866 strlist__delete(sdtlist); 2867 } 2868 2869 int print_hwcache_events(const char *event_glob, bool name_only) 2870 { 2871 unsigned int type, op, i, evt_i = 0, evt_num = 0, npmus = 0; 2872 char name[64], new_name[128]; 2873 char **evt_list = NULL, **evt_pmus = NULL; 2874 bool evt_num_known = false; 2875 struct perf_pmu *pmu = NULL; 2876 2877 if (perf_pmu__has_hybrid()) { 2878 npmus = perf_pmu__hybrid_pmu_num(); 2879 evt_pmus = zalloc(sizeof(char *) * npmus); 2880 if (!evt_pmus) 2881 goto out_enomem; 2882 } 2883 2884 restart: 2885 if (evt_num_known) { 2886 evt_list = zalloc(sizeof(char *) * evt_num); 2887 if (!evt_list) 2888 goto out_enomem; 2889 } 2890 2891 for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) { 2892 for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) { 2893 /* skip invalid cache type */ 2894 if (!evsel__is_cache_op_valid(type, op)) 2895 continue; 2896 2897 for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) { 2898 unsigned int hybrid_supported = 0, j; 2899 bool supported; 2900 2901 __evsel__hw_cache_type_op_res_name(type, op, i, name, sizeof(name)); 2902 if (event_glob != NULL && !strglobmatch(name, event_glob)) 2903 continue; 2904 2905 if (!perf_pmu__has_hybrid()) { 2906 if (!is_event_supported(PERF_TYPE_HW_CACHE, 2907 type | (op << 8) | (i << 16))) { 2908 continue; 2909 } 2910 } else { 2911 perf_pmu__for_each_hybrid_pmu(pmu) { 2912 if (!evt_num_known) { 2913 evt_num++; 2914 continue; 2915 } 2916 2917 supported = is_event_supported( 2918 PERF_TYPE_HW_CACHE, 2919 type | (op << 8) | (i << 16) | 2920 ((__u64)pmu->type << PERF_PMU_TYPE_SHIFT)); 2921 if (supported) { 2922 snprintf(new_name, sizeof(new_name), "%s/%s/", 2923 pmu->name, name); 2924 evt_pmus[hybrid_supported] = strdup(new_name); 2925 hybrid_supported++; 2926 } 2927 } 2928 2929 if (hybrid_supported == 0) 2930 continue; 2931 } 2932 2933 if (!evt_num_known) { 2934 evt_num++; 2935 continue; 2936 } 2937 2938 if ((hybrid_supported == 0) || 2939 (hybrid_supported == npmus)) { 2940 evt_list[evt_i] = strdup(name); 2941 if (npmus > 0) { 2942 for (j = 0; j < npmus; j++) 2943 zfree(&evt_pmus[j]); 2944 } 2945 } else { 2946 for (j = 0; j < hybrid_supported; j++) { 2947 evt_list[evt_i++] = evt_pmus[j]; 2948 evt_pmus[j] = NULL; 2949 } 2950 continue; 2951 } 2952 2953 if (evt_list[evt_i] == NULL) 2954 goto out_enomem; 2955 evt_i++; 2956 } 2957 } 2958 } 2959 2960 if (!evt_num_known) { 2961 evt_num_known = true; 2962 goto restart; 2963 } 2964 2965 for (evt_i = 0; evt_i < evt_num; evt_i++) { 2966 if (!evt_list[evt_i]) 2967 break; 2968 } 2969 2970 evt_num = evt_i; 2971 qsort(evt_list, evt_num, sizeof(char *), cmp_string); 2972 evt_i = 0; 2973 while (evt_i < evt_num) { 2974 if (name_only) { 2975 printf("%s ", evt_list[evt_i++]); 2976 continue; 2977 } 2978 printf(" %-50s [%s]\n", evt_list[evt_i++], 2979 event_type_descriptors[PERF_TYPE_HW_CACHE]); 2980 } 2981 if (evt_num && pager_in_use()) 2982 printf("\n"); 2983 2984 out_free: 2985 evt_num = evt_i; 2986 for (evt_i = 0; evt_i < evt_num; evt_i++) 2987 zfree(&evt_list[evt_i]); 2988 zfree(&evt_list); 2989 2990 for (evt_i = 0; evt_i < npmus; evt_i++) 2991 zfree(&evt_pmus[evt_i]); 2992 zfree(&evt_pmus); 2993 return evt_num; 2994 2995 out_enomem: 2996 printf("FATAL: not enough memory to print %s\n", event_type_descriptors[PERF_TYPE_HW_CACHE]); 2997 if (evt_list) 2998 goto out_free; 2999 return evt_num; 3000 } 3001 3002 static void print_tool_event(const char *name, const char *event_glob, 3003 bool name_only) 3004 { 3005 if (event_glob && !strglobmatch(name, event_glob)) 3006 return; 3007 if (name_only) 3008 printf("%s ", name); 3009 else 3010 printf(" %-50s [%s]\n", name, "Tool event"); 3011 3012 } 3013 3014 void print_tool_events(const char *event_glob, bool name_only) 3015 { 3016 print_tool_event("duration_time", event_glob, name_only); 3017 if (pager_in_use()) 3018 printf("\n"); 3019 } 3020 3021 void print_symbol_events(const char *event_glob, unsigned type, 3022 struct event_symbol *syms, unsigned max, 3023 bool name_only) 3024 { 3025 unsigned int i, evt_i = 0, evt_num = 0; 3026 char name[MAX_NAME_LEN]; 3027 char **evt_list = NULL; 3028 bool evt_num_known = false; 3029 3030 restart: 3031 if (evt_num_known) { 3032 evt_list = zalloc(sizeof(char *) * evt_num); 3033 if (!evt_list) 3034 goto out_enomem; 3035 syms -= max; 3036 } 3037 3038 for (i = 0; i < max; i++, syms++) { 3039 /* 3040 * New attr.config still not supported here, the latest 3041 * example was PERF_COUNT_SW_CGROUP_SWITCHES 3042 */ 3043 if (syms->symbol == NULL) 3044 continue; 3045 3046 if (event_glob != NULL && !(strglobmatch(syms->symbol, event_glob) || 3047 (syms->alias && strglobmatch(syms->alias, event_glob)))) 3048 continue; 3049 3050 if (!is_event_supported(type, i)) 3051 continue; 3052 3053 if (!evt_num_known) { 3054 evt_num++; 3055 continue; 3056 } 3057 3058 if (!name_only && strlen(syms->alias)) 3059 snprintf(name, MAX_NAME_LEN, "%s OR %s", syms->symbol, syms->alias); 3060 else 3061 strlcpy(name, syms->symbol, MAX_NAME_LEN); 3062 3063 evt_list[evt_i] = strdup(name); 3064 if (evt_list[evt_i] == NULL) 3065 goto out_enomem; 3066 evt_i++; 3067 } 3068 3069 if (!evt_num_known) { 3070 evt_num_known = true; 3071 goto restart; 3072 } 3073 qsort(evt_list, evt_num, sizeof(char *), cmp_string); 3074 evt_i = 0; 3075 while (evt_i < evt_num) { 3076 if (name_only) { 3077 printf("%s ", evt_list[evt_i++]); 3078 continue; 3079 } 3080 printf(" %-50s [%s]\n", evt_list[evt_i++], event_type_descriptors[type]); 3081 } 3082 if (evt_num && pager_in_use()) 3083 printf("\n"); 3084 3085 out_free: 3086 evt_num = evt_i; 3087 for (evt_i = 0; evt_i < evt_num; evt_i++) 3088 zfree(&evt_list[evt_i]); 3089 zfree(&evt_list); 3090 return; 3091 3092 out_enomem: 3093 printf("FATAL: not enough memory to print %s\n", event_type_descriptors[type]); 3094 if (evt_list) 3095 goto out_free; 3096 } 3097 3098 /* 3099 * Print the help text for the event symbols: 3100 */ 3101 void print_events(const char *event_glob, bool name_only, bool quiet_flag, 3102 bool long_desc, bool details_flag, bool deprecated, 3103 const char *pmu_name) 3104 { 3105 print_symbol_events(event_glob, PERF_TYPE_HARDWARE, 3106 event_symbols_hw, PERF_COUNT_HW_MAX, name_only); 3107 3108 print_symbol_events(event_glob, PERF_TYPE_SOFTWARE, 3109 event_symbols_sw, PERF_COUNT_SW_MAX, name_only); 3110 print_tool_events(event_glob, name_only); 3111 3112 print_hwcache_events(event_glob, name_only); 3113 3114 print_pmu_events(event_glob, name_only, quiet_flag, long_desc, 3115 details_flag, deprecated, pmu_name); 3116 3117 if (event_glob != NULL) 3118 return; 3119 3120 if (!name_only) { 3121 printf(" %-50s [%s]\n", 3122 "rNNN", 3123 event_type_descriptors[PERF_TYPE_RAW]); 3124 printf(" %-50s [%s]\n", 3125 "cpu/t1=v1[,t2=v2,t3 ...]/modifier", 3126 event_type_descriptors[PERF_TYPE_RAW]); 3127 if (pager_in_use()) 3128 printf(" (see 'man perf-list' on how to encode it)\n\n"); 3129 3130 printf(" %-50s [%s]\n", 3131 "mem:<addr>[/len][:access]", 3132 event_type_descriptors[PERF_TYPE_BREAKPOINT]); 3133 if (pager_in_use()) 3134 printf("\n"); 3135 } 3136 3137 print_tracepoint_events(NULL, NULL, name_only); 3138 3139 print_sdt_events(NULL, NULL, name_only); 3140 3141 metricgroup__print(true, true, NULL, name_only, details_flag, 3142 pmu_name); 3143 3144 print_libpfm_events(name_only, long_desc); 3145 } 3146 3147 int parse_events__is_hardcoded_term(struct parse_events_term *term) 3148 { 3149 return term->type_term != PARSE_EVENTS__TERM_TYPE_USER; 3150 } 3151 3152 static int new_term(struct parse_events_term **_term, 3153 struct parse_events_term *temp, 3154 char *str, u64 num) 3155 { 3156 struct parse_events_term *term; 3157 3158 term = malloc(sizeof(*term)); 3159 if (!term) 3160 return -ENOMEM; 3161 3162 *term = *temp; 3163 INIT_LIST_HEAD(&term->list); 3164 term->weak = false; 3165 3166 switch (term->type_val) { 3167 case PARSE_EVENTS__TERM_TYPE_NUM: 3168 term->val.num = num; 3169 break; 3170 case PARSE_EVENTS__TERM_TYPE_STR: 3171 term->val.str = str; 3172 break; 3173 default: 3174 free(term); 3175 return -EINVAL; 3176 } 3177 3178 *_term = term; 3179 return 0; 3180 } 3181 3182 int parse_events_term__num(struct parse_events_term **term, 3183 int type_term, char *config, u64 num, 3184 bool no_value, 3185 void *loc_term_, void *loc_val_) 3186 { 3187 YYLTYPE *loc_term = loc_term_; 3188 YYLTYPE *loc_val = loc_val_; 3189 3190 struct parse_events_term temp = { 3191 .type_val = PARSE_EVENTS__TERM_TYPE_NUM, 3192 .type_term = type_term, 3193 .config = config ? : strdup(config_term_names[type_term]), 3194 .no_value = no_value, 3195 .err_term = loc_term ? loc_term->first_column : 0, 3196 .err_val = loc_val ? loc_val->first_column : 0, 3197 }; 3198 3199 return new_term(term, &temp, NULL, num); 3200 } 3201 3202 int parse_events_term__str(struct parse_events_term **term, 3203 int type_term, char *config, char *str, 3204 void *loc_term_, void *loc_val_) 3205 { 3206 YYLTYPE *loc_term = loc_term_; 3207 YYLTYPE *loc_val = loc_val_; 3208 3209 struct parse_events_term temp = { 3210 .type_val = PARSE_EVENTS__TERM_TYPE_STR, 3211 .type_term = type_term, 3212 .config = config, 3213 .err_term = loc_term ? loc_term->first_column : 0, 3214 .err_val = loc_val ? loc_val->first_column : 0, 3215 }; 3216 3217 return new_term(term, &temp, str, 0); 3218 } 3219 3220 int parse_events_term__sym_hw(struct parse_events_term **term, 3221 char *config, unsigned idx) 3222 { 3223 struct event_symbol *sym; 3224 char *str; 3225 struct parse_events_term temp = { 3226 .type_val = PARSE_EVENTS__TERM_TYPE_STR, 3227 .type_term = PARSE_EVENTS__TERM_TYPE_USER, 3228 .config = config, 3229 }; 3230 3231 if (!temp.config) { 3232 temp.config = strdup("event"); 3233 if (!temp.config) 3234 return -ENOMEM; 3235 } 3236 BUG_ON(idx >= PERF_COUNT_HW_MAX); 3237 sym = &event_symbols_hw[idx]; 3238 3239 str = strdup(sym->symbol); 3240 if (!str) 3241 return -ENOMEM; 3242 return new_term(term, &temp, str, 0); 3243 } 3244 3245 int parse_events_term__clone(struct parse_events_term **new, 3246 struct parse_events_term *term) 3247 { 3248 char *str; 3249 struct parse_events_term temp = { 3250 .type_val = term->type_val, 3251 .type_term = term->type_term, 3252 .config = NULL, 3253 .err_term = term->err_term, 3254 .err_val = term->err_val, 3255 }; 3256 3257 if (term->config) { 3258 temp.config = strdup(term->config); 3259 if (!temp.config) 3260 return -ENOMEM; 3261 } 3262 if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) 3263 return new_term(new, &temp, NULL, term->val.num); 3264 3265 str = strdup(term->val.str); 3266 if (!str) 3267 return -ENOMEM; 3268 return new_term(new, &temp, str, 0); 3269 } 3270 3271 void parse_events_term__delete(struct parse_events_term *term) 3272 { 3273 if (term->array.nr_ranges) 3274 zfree(&term->array.ranges); 3275 3276 if (term->type_val != PARSE_EVENTS__TERM_TYPE_NUM) 3277 zfree(&term->val.str); 3278 3279 zfree(&term->config); 3280 free(term); 3281 } 3282 3283 int parse_events_copy_term_list(struct list_head *old, 3284 struct list_head **new) 3285 { 3286 struct parse_events_term *term, *n; 3287 int ret; 3288 3289 if (!old) { 3290 *new = NULL; 3291 return 0; 3292 } 3293 3294 *new = malloc(sizeof(struct list_head)); 3295 if (!*new) 3296 return -ENOMEM; 3297 INIT_LIST_HEAD(*new); 3298 3299 list_for_each_entry (term, old, list) { 3300 ret = parse_events_term__clone(&n, term); 3301 if (ret) 3302 return ret; 3303 list_add_tail(&n->list, *new); 3304 } 3305 return 0; 3306 } 3307 3308 void parse_events_terms__purge(struct list_head *terms) 3309 { 3310 struct parse_events_term *term, *h; 3311 3312 list_for_each_entry_safe(term, h, terms, list) { 3313 list_del_init(&term->list); 3314 parse_events_term__delete(term); 3315 } 3316 } 3317 3318 void parse_events_terms__delete(struct list_head *terms) 3319 { 3320 if (!terms) 3321 return; 3322 parse_events_terms__purge(terms); 3323 free(terms); 3324 } 3325 3326 void parse_events__clear_array(struct parse_events_array *a) 3327 { 3328 zfree(&a->ranges); 3329 } 3330 3331 void parse_events_evlist_error(struct parse_events_state *parse_state, 3332 int idx, const char *str) 3333 { 3334 if (!parse_state->error) 3335 return; 3336 3337 parse_events_error__handle(parse_state->error, idx, strdup(str), NULL); 3338 } 3339 3340 static void config_terms_list(char *buf, size_t buf_sz) 3341 { 3342 int i; 3343 bool first = true; 3344 3345 buf[0] = '\0'; 3346 for (i = 0; i < __PARSE_EVENTS__TERM_TYPE_NR; i++) { 3347 const char *name = config_term_names[i]; 3348 3349 if (!config_term_avail(i, NULL)) 3350 continue; 3351 if (!name) 3352 continue; 3353 if (name[0] == '<') 3354 continue; 3355 3356 if (strlen(buf) + strlen(name) + 2 >= buf_sz) 3357 return; 3358 3359 if (!first) 3360 strcat(buf, ","); 3361 else 3362 first = false; 3363 strcat(buf, name); 3364 } 3365 } 3366 3367 /* 3368 * Return string contains valid config terms of an event. 3369 * @additional_terms: For terms such as PMU sysfs terms. 3370 */ 3371 char *parse_events_formats_error_string(char *additional_terms) 3372 { 3373 char *str; 3374 /* "no-overwrite" is the longest name */ 3375 char static_terms[__PARSE_EVENTS__TERM_TYPE_NR * 3376 (sizeof("no-overwrite") - 1)]; 3377 3378 config_terms_list(static_terms, sizeof(static_terms)); 3379 /* valid terms */ 3380 if (additional_terms) { 3381 if (asprintf(&str, "valid terms: %s,%s", 3382 additional_terms, static_terms) < 0) 3383 goto fail; 3384 } else { 3385 if (asprintf(&str, "valid terms: %s", static_terms) < 0) 3386 goto fail; 3387 } 3388 return str; 3389 3390 fail: 3391 return NULL; 3392 } 3393 3394 struct evsel *parse_events__add_event_hybrid(struct list_head *list, int *idx, 3395 struct perf_event_attr *attr, 3396 const char *name, 3397 const char *metric_id, 3398 struct perf_pmu *pmu, 3399 struct list_head *config_terms) 3400 { 3401 return __add_event(list, idx, attr, /*init_attr=*/true, name, metric_id, 3402 pmu, config_terms, /*auto_merge_stats=*/false, 3403 /*cpu_list=*/NULL); 3404 } 3405