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 free((char *)evsel->unit); 407 evsel->unit = strdup("ns"); 408 } 409 return 0; 410 } 411 412 static int parse_aliases(char *str, const char *names[][EVSEL__MAX_ALIASES], int size) 413 { 414 int i, j; 415 int n, longest = -1; 416 417 for (i = 0; i < size; i++) { 418 for (j = 0; j < EVSEL__MAX_ALIASES && names[i][j]; j++) { 419 n = strlen(names[i][j]); 420 if (n > longest && !strncasecmp(str, names[i][j], n)) 421 longest = n; 422 } 423 if (longest > 0) 424 return i; 425 } 426 427 return -1; 428 } 429 430 typedef int config_term_func_t(struct perf_event_attr *attr, 431 struct parse_events_term *term, 432 struct parse_events_error *err); 433 static int config_term_common(struct perf_event_attr *attr, 434 struct parse_events_term *term, 435 struct parse_events_error *err); 436 static int config_attr(struct perf_event_attr *attr, 437 struct list_head *head, 438 struct parse_events_error *err, 439 config_term_func_t config_term); 440 441 int parse_events_add_cache(struct list_head *list, int *idx, 442 char *type, char *op_result1, char *op_result2, 443 struct parse_events_error *err, 444 struct list_head *head_config, 445 struct parse_events_state *parse_state) 446 { 447 struct perf_event_attr attr; 448 LIST_HEAD(config_terms); 449 char name[MAX_NAME_LEN]; 450 const char *config_name, *metric_id; 451 int cache_type = -1, cache_op = -1, cache_result = -1; 452 char *op_result[2] = { op_result1, op_result2 }; 453 int i, n, ret; 454 bool hybrid; 455 456 /* 457 * No fallback - if we cannot get a clear cache type 458 * then bail out: 459 */ 460 cache_type = parse_aliases(type, evsel__hw_cache, PERF_COUNT_HW_CACHE_MAX); 461 if (cache_type == -1) 462 return -EINVAL; 463 464 config_name = get_config_name(head_config); 465 n = snprintf(name, MAX_NAME_LEN, "%s", type); 466 467 for (i = 0; (i < 2) && (op_result[i]); i++) { 468 char *str = op_result[i]; 469 470 n += snprintf(name + n, MAX_NAME_LEN - n, "-%s", str); 471 472 if (cache_op == -1) { 473 cache_op = parse_aliases(str, evsel__hw_cache_op, 474 PERF_COUNT_HW_CACHE_OP_MAX); 475 if (cache_op >= 0) { 476 if (!evsel__is_cache_op_valid(cache_type, cache_op)) 477 return -EINVAL; 478 continue; 479 } 480 } 481 482 if (cache_result == -1) { 483 cache_result = parse_aliases(str, evsel__hw_cache_result, 484 PERF_COUNT_HW_CACHE_RESULT_MAX); 485 if (cache_result >= 0) 486 continue; 487 } 488 } 489 490 /* 491 * Fall back to reads: 492 */ 493 if (cache_op == -1) 494 cache_op = PERF_COUNT_HW_CACHE_OP_READ; 495 496 /* 497 * Fall back to accesses: 498 */ 499 if (cache_result == -1) 500 cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS; 501 502 memset(&attr, 0, sizeof(attr)); 503 attr.config = cache_type | (cache_op << 8) | (cache_result << 16); 504 attr.type = PERF_TYPE_HW_CACHE; 505 506 if (head_config) { 507 if (config_attr(&attr, head_config, err, 508 config_term_common)) 509 return -EINVAL; 510 511 if (get_config_terms(head_config, &config_terms)) 512 return -ENOMEM; 513 } 514 515 metric_id = get_config_metric_id(head_config); 516 ret = parse_events__add_cache_hybrid(list, idx, &attr, 517 config_name ? : name, 518 metric_id, 519 &config_terms, 520 &hybrid, parse_state); 521 if (hybrid) 522 goto out_free_terms; 523 524 ret = add_event(list, idx, &attr, config_name ? : name, metric_id, 525 &config_terms); 526 out_free_terms: 527 free_config_terms(&config_terms); 528 return ret; 529 } 530 531 static void tracepoint_error(struct parse_events_error *e, int err, 532 const char *sys, const char *name) 533 { 534 const char *str; 535 char help[BUFSIZ]; 536 537 if (!e) 538 return; 539 540 /* 541 * We get error directly from syscall errno ( > 0), 542 * or from encoded pointer's error ( < 0). 543 */ 544 err = abs(err); 545 546 switch (err) { 547 case EACCES: 548 str = "can't access trace events"; 549 break; 550 case ENOENT: 551 str = "unknown tracepoint"; 552 break; 553 default: 554 str = "failed to add tracepoint"; 555 break; 556 } 557 558 tracing_path__strerror_open_tp(err, help, sizeof(help), sys, name); 559 parse_events_error__handle(e, 0, strdup(str), strdup(help)); 560 } 561 562 static int add_tracepoint(struct list_head *list, int *idx, 563 const char *sys_name, const char *evt_name, 564 struct parse_events_error *err, 565 struct list_head *head_config) 566 { 567 struct evsel *evsel = evsel__newtp_idx(sys_name, evt_name, (*idx)++); 568 569 if (IS_ERR(evsel)) { 570 tracepoint_error(err, PTR_ERR(evsel), sys_name, evt_name); 571 return PTR_ERR(evsel); 572 } 573 574 if (head_config) { 575 LIST_HEAD(config_terms); 576 577 if (get_config_terms(head_config, &config_terms)) 578 return -ENOMEM; 579 list_splice(&config_terms, &evsel->config_terms); 580 } 581 582 list_add_tail(&evsel->core.node, list); 583 return 0; 584 } 585 586 static int add_tracepoint_multi_event(struct list_head *list, int *idx, 587 const char *sys_name, const char *evt_name, 588 struct parse_events_error *err, 589 struct list_head *head_config) 590 { 591 char *evt_path; 592 struct dirent *evt_ent; 593 DIR *evt_dir; 594 int ret = 0, found = 0; 595 596 evt_path = get_events_file(sys_name); 597 if (!evt_path) { 598 tracepoint_error(err, errno, sys_name, evt_name); 599 return -1; 600 } 601 evt_dir = opendir(evt_path); 602 if (!evt_dir) { 603 put_events_file(evt_path); 604 tracepoint_error(err, errno, sys_name, evt_name); 605 return -1; 606 } 607 608 while (!ret && (evt_ent = readdir(evt_dir))) { 609 if (!strcmp(evt_ent->d_name, ".") 610 || !strcmp(evt_ent->d_name, "..") 611 || !strcmp(evt_ent->d_name, "enable") 612 || !strcmp(evt_ent->d_name, "filter")) 613 continue; 614 615 if (!strglobmatch(evt_ent->d_name, evt_name)) 616 continue; 617 618 found++; 619 620 ret = add_tracepoint(list, idx, sys_name, evt_ent->d_name, 621 err, head_config); 622 } 623 624 if (!found) { 625 tracepoint_error(err, ENOENT, sys_name, evt_name); 626 ret = -1; 627 } 628 629 put_events_file(evt_path); 630 closedir(evt_dir); 631 return ret; 632 } 633 634 static int add_tracepoint_event(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 return strpbrk(evt_name, "*?") ? 640 add_tracepoint_multi_event(list, idx, sys_name, evt_name, 641 err, head_config) : 642 add_tracepoint(list, idx, sys_name, evt_name, 643 err, head_config); 644 } 645 646 static int add_tracepoint_multi_sys(struct list_head *list, int *idx, 647 const char *sys_name, const char *evt_name, 648 struct parse_events_error *err, 649 struct list_head *head_config) 650 { 651 struct dirent *events_ent; 652 DIR *events_dir; 653 int ret = 0; 654 655 events_dir = tracing_events__opendir(); 656 if (!events_dir) { 657 tracepoint_error(err, errno, sys_name, evt_name); 658 return -1; 659 } 660 661 while (!ret && (events_ent = readdir(events_dir))) { 662 if (!strcmp(events_ent->d_name, ".") 663 || !strcmp(events_ent->d_name, "..") 664 || !strcmp(events_ent->d_name, "enable") 665 || !strcmp(events_ent->d_name, "header_event") 666 || !strcmp(events_ent->d_name, "header_page")) 667 continue; 668 669 if (!strglobmatch(events_ent->d_name, sys_name)) 670 continue; 671 672 ret = add_tracepoint_event(list, idx, events_ent->d_name, 673 evt_name, err, head_config); 674 } 675 676 closedir(events_dir); 677 return ret; 678 } 679 680 #ifdef HAVE_LIBBPF_SUPPORT 681 struct __add_bpf_event_param { 682 struct parse_events_state *parse_state; 683 struct list_head *list; 684 struct list_head *head_config; 685 }; 686 687 static int add_bpf_event(const char *group, const char *event, int fd, struct bpf_object *obj, 688 void *_param) 689 { 690 LIST_HEAD(new_evsels); 691 struct __add_bpf_event_param *param = _param; 692 struct parse_events_state *parse_state = param->parse_state; 693 struct list_head *list = param->list; 694 struct evsel *pos; 695 int err; 696 /* 697 * Check if we should add the event, i.e. if it is a TP but starts with a '!', 698 * then don't add the tracepoint, this will be used for something else, like 699 * adding to a BPF_MAP_TYPE_PROG_ARRAY. 700 * 701 * See tools/perf/examples/bpf/augmented_raw_syscalls.c 702 */ 703 if (group[0] == '!') 704 return 0; 705 706 pr_debug("add bpf event %s:%s and attach bpf program %d\n", 707 group, event, fd); 708 709 err = parse_events_add_tracepoint(&new_evsels, &parse_state->idx, group, 710 event, parse_state->error, 711 param->head_config); 712 if (err) { 713 struct evsel *evsel, *tmp; 714 715 pr_debug("Failed to add BPF event %s:%s\n", 716 group, event); 717 list_for_each_entry_safe(evsel, tmp, &new_evsels, core.node) { 718 list_del_init(&evsel->core.node); 719 evsel__delete(evsel); 720 } 721 return err; 722 } 723 pr_debug("adding %s:%s\n", group, event); 724 725 list_for_each_entry(pos, &new_evsels, core.node) { 726 pr_debug("adding %s:%s to %p\n", 727 group, event, pos); 728 pos->bpf_fd = fd; 729 pos->bpf_obj = obj; 730 } 731 list_splice(&new_evsels, list); 732 return 0; 733 } 734 735 int parse_events_load_bpf_obj(struct parse_events_state *parse_state, 736 struct list_head *list, 737 struct bpf_object *obj, 738 struct list_head *head_config) 739 { 740 int err; 741 char errbuf[BUFSIZ]; 742 struct __add_bpf_event_param param = {parse_state, list, head_config}; 743 static bool registered_unprobe_atexit = false; 744 745 if (IS_ERR(obj) || !obj) { 746 snprintf(errbuf, sizeof(errbuf), 747 "Internal error: load bpf obj with NULL"); 748 err = -EINVAL; 749 goto errout; 750 } 751 752 /* 753 * Register atexit handler before calling bpf__probe() so 754 * bpf__probe() don't need to unprobe probe points its already 755 * created when failure. 756 */ 757 if (!registered_unprobe_atexit) { 758 atexit(bpf__clear); 759 registered_unprobe_atexit = true; 760 } 761 762 err = bpf__probe(obj); 763 if (err) { 764 bpf__strerror_probe(obj, err, errbuf, sizeof(errbuf)); 765 goto errout; 766 } 767 768 err = bpf__load(obj); 769 if (err) { 770 bpf__strerror_load(obj, err, errbuf, sizeof(errbuf)); 771 goto errout; 772 } 773 774 err = bpf__foreach_event(obj, add_bpf_event, ¶m); 775 if (err) { 776 snprintf(errbuf, sizeof(errbuf), 777 "Attach events in BPF object failed"); 778 goto errout; 779 } 780 781 return 0; 782 errout: 783 parse_events_error__handle(parse_state->error, 0, 784 strdup(errbuf), strdup("(add -v to see detail)")); 785 return err; 786 } 787 788 static int 789 parse_events_config_bpf(struct parse_events_state *parse_state, 790 struct bpf_object *obj, 791 struct list_head *head_config) 792 { 793 struct parse_events_term *term; 794 int error_pos; 795 796 if (!head_config || list_empty(head_config)) 797 return 0; 798 799 list_for_each_entry(term, head_config, list) { 800 int err; 801 802 if (term->type_term != PARSE_EVENTS__TERM_TYPE_USER) { 803 parse_events_error__handle(parse_state->error, term->err_term, 804 strdup("Invalid config term for BPF object"), 805 NULL); 806 return -EINVAL; 807 } 808 809 err = bpf__config_obj(obj, term, parse_state->evlist, &error_pos); 810 if (err) { 811 char errbuf[BUFSIZ]; 812 int idx; 813 814 bpf__strerror_config_obj(obj, term, parse_state->evlist, 815 &error_pos, err, errbuf, 816 sizeof(errbuf)); 817 818 if (err == -BPF_LOADER_ERRNO__OBJCONF_MAP_VALUE) 819 idx = term->err_val; 820 else 821 idx = term->err_term + error_pos; 822 823 parse_events_error__handle(parse_state->error, idx, 824 strdup(errbuf), 825 strdup( 826 "Hint:\tValid config terms:\n" 827 " \tmap:[<arraymap>].value<indices>=[value]\n" 828 " \tmap:[<eventmap>].event<indices>=[event]\n" 829 "\n" 830 " \twhere <indices> is something like [0,3...5] or [all]\n" 831 " \t(add -v to see detail)")); 832 return err; 833 } 834 } 835 return 0; 836 } 837 838 /* 839 * Split config terms: 840 * perf record -e bpf.c/call-graph=fp,map:array.value[0]=1/ ... 841 * 'call-graph=fp' is 'evt config', should be applied to each 842 * events in bpf.c. 843 * 'map:array.value[0]=1' is 'obj config', should be processed 844 * with parse_events_config_bpf. 845 * 846 * Move object config terms from the first list to obj_head_config. 847 */ 848 static void 849 split_bpf_config_terms(struct list_head *evt_head_config, 850 struct list_head *obj_head_config) 851 { 852 struct parse_events_term *term, *temp; 853 854 /* 855 * Currently, all possible user config term 856 * belong to bpf object. parse_events__is_hardcoded_term() 857 * happens to be a good flag. 858 * 859 * See parse_events_config_bpf() and 860 * config_term_tracepoint(). 861 */ 862 list_for_each_entry_safe(term, temp, evt_head_config, list) 863 if (!parse_events__is_hardcoded_term(term)) 864 list_move_tail(&term->list, obj_head_config); 865 } 866 867 int parse_events_load_bpf(struct parse_events_state *parse_state, 868 struct list_head *list, 869 char *bpf_file_name, 870 bool source, 871 struct list_head *head_config) 872 { 873 int err; 874 struct bpf_object *obj; 875 LIST_HEAD(obj_head_config); 876 877 if (head_config) 878 split_bpf_config_terms(head_config, &obj_head_config); 879 880 obj = bpf__prepare_load(bpf_file_name, source); 881 if (IS_ERR(obj)) { 882 char errbuf[BUFSIZ]; 883 884 err = PTR_ERR(obj); 885 886 if (err == -ENOTSUP) 887 snprintf(errbuf, sizeof(errbuf), 888 "BPF support is not compiled"); 889 else 890 bpf__strerror_prepare_load(bpf_file_name, 891 source, 892 -err, errbuf, 893 sizeof(errbuf)); 894 895 parse_events_error__handle(parse_state->error, 0, 896 strdup(errbuf), strdup("(add -v to see detail)")); 897 return err; 898 } 899 900 err = parse_events_load_bpf_obj(parse_state, list, obj, head_config); 901 if (err) 902 return err; 903 err = parse_events_config_bpf(parse_state, obj, &obj_head_config); 904 905 /* 906 * Caller doesn't know anything about obj_head_config, 907 * so combine them together again before returning. 908 */ 909 if (head_config) 910 list_splice_tail(&obj_head_config, head_config); 911 return err; 912 } 913 #else // HAVE_LIBBPF_SUPPORT 914 int parse_events_load_bpf_obj(struct parse_events_state *parse_state, 915 struct list_head *list __maybe_unused, 916 struct bpf_object *obj __maybe_unused, 917 struct list_head *head_config __maybe_unused) 918 { 919 parse_events_error__handle(parse_state->error, 0, 920 strdup("BPF support is not compiled"), 921 strdup("Make sure libbpf-devel is available at build time.")); 922 return -ENOTSUP; 923 } 924 925 int parse_events_load_bpf(struct parse_events_state *parse_state, 926 struct list_head *list __maybe_unused, 927 char *bpf_file_name __maybe_unused, 928 bool source __maybe_unused, 929 struct list_head *head_config __maybe_unused) 930 { 931 parse_events_error__handle(parse_state->error, 0, 932 strdup("BPF support is not compiled"), 933 strdup("Make sure libbpf-devel is available at build time.")); 934 return -ENOTSUP; 935 } 936 #endif // HAVE_LIBBPF_SUPPORT 937 938 static int 939 parse_breakpoint_type(const char *type, struct perf_event_attr *attr) 940 { 941 int i; 942 943 for (i = 0; i < 3; i++) { 944 if (!type || !type[i]) 945 break; 946 947 #define CHECK_SET_TYPE(bit) \ 948 do { \ 949 if (attr->bp_type & bit) \ 950 return -EINVAL; \ 951 else \ 952 attr->bp_type |= bit; \ 953 } while (0) 954 955 switch (type[i]) { 956 case 'r': 957 CHECK_SET_TYPE(HW_BREAKPOINT_R); 958 break; 959 case 'w': 960 CHECK_SET_TYPE(HW_BREAKPOINT_W); 961 break; 962 case 'x': 963 CHECK_SET_TYPE(HW_BREAKPOINT_X); 964 break; 965 default: 966 return -EINVAL; 967 } 968 } 969 970 #undef CHECK_SET_TYPE 971 972 if (!attr->bp_type) /* Default */ 973 attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W; 974 975 return 0; 976 } 977 978 int parse_events_add_breakpoint(struct list_head *list, int *idx, 979 u64 addr, char *type, u64 len) 980 { 981 struct perf_event_attr attr; 982 983 memset(&attr, 0, sizeof(attr)); 984 attr.bp_addr = addr; 985 986 if (parse_breakpoint_type(type, &attr)) 987 return -EINVAL; 988 989 /* Provide some defaults if len is not specified */ 990 if (!len) { 991 if (attr.bp_type == HW_BREAKPOINT_X) 992 len = sizeof(long); 993 else 994 len = HW_BREAKPOINT_LEN_4; 995 } 996 997 attr.bp_len = len; 998 999 attr.type = PERF_TYPE_BREAKPOINT; 1000 attr.sample_period = 1; 1001 1002 return add_event(list, idx, &attr, /*name=*/NULL, /*mertic_id=*/NULL, 1003 /*config_terms=*/NULL); 1004 } 1005 1006 static int check_type_val(struct parse_events_term *term, 1007 struct parse_events_error *err, 1008 int type) 1009 { 1010 if (type == term->type_val) 1011 return 0; 1012 1013 if (err) { 1014 parse_events_error__handle(err, term->err_val, 1015 type == PARSE_EVENTS__TERM_TYPE_NUM 1016 ? strdup("expected numeric value") 1017 : strdup("expected string value"), 1018 NULL); 1019 } 1020 return -EINVAL; 1021 } 1022 1023 /* 1024 * Update according to parse-events.l 1025 */ 1026 static const char *config_term_names[__PARSE_EVENTS__TERM_TYPE_NR] = { 1027 [PARSE_EVENTS__TERM_TYPE_USER] = "<sysfs term>", 1028 [PARSE_EVENTS__TERM_TYPE_CONFIG] = "config", 1029 [PARSE_EVENTS__TERM_TYPE_CONFIG1] = "config1", 1030 [PARSE_EVENTS__TERM_TYPE_CONFIG2] = "config2", 1031 [PARSE_EVENTS__TERM_TYPE_NAME] = "name", 1032 [PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD] = "period", 1033 [PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ] = "freq", 1034 [PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE] = "branch_type", 1035 [PARSE_EVENTS__TERM_TYPE_TIME] = "time", 1036 [PARSE_EVENTS__TERM_TYPE_CALLGRAPH] = "call-graph", 1037 [PARSE_EVENTS__TERM_TYPE_STACKSIZE] = "stack-size", 1038 [PARSE_EVENTS__TERM_TYPE_NOINHERIT] = "no-inherit", 1039 [PARSE_EVENTS__TERM_TYPE_INHERIT] = "inherit", 1040 [PARSE_EVENTS__TERM_TYPE_MAX_STACK] = "max-stack", 1041 [PARSE_EVENTS__TERM_TYPE_MAX_EVENTS] = "nr", 1042 [PARSE_EVENTS__TERM_TYPE_OVERWRITE] = "overwrite", 1043 [PARSE_EVENTS__TERM_TYPE_NOOVERWRITE] = "no-overwrite", 1044 [PARSE_EVENTS__TERM_TYPE_DRV_CFG] = "driver-config", 1045 [PARSE_EVENTS__TERM_TYPE_PERCORE] = "percore", 1046 [PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT] = "aux-output", 1047 [PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE] = "aux-sample-size", 1048 [PARSE_EVENTS__TERM_TYPE_METRIC_ID] = "metric-id", 1049 }; 1050 1051 static bool config_term_shrinked; 1052 1053 static bool 1054 config_term_avail(int term_type, struct parse_events_error *err) 1055 { 1056 char *err_str; 1057 1058 if (term_type < 0 || term_type >= __PARSE_EVENTS__TERM_TYPE_NR) { 1059 parse_events_error__handle(err, -1, 1060 strdup("Invalid term_type"), NULL); 1061 return false; 1062 } 1063 if (!config_term_shrinked) 1064 return true; 1065 1066 switch (term_type) { 1067 case PARSE_EVENTS__TERM_TYPE_CONFIG: 1068 case PARSE_EVENTS__TERM_TYPE_CONFIG1: 1069 case PARSE_EVENTS__TERM_TYPE_CONFIG2: 1070 case PARSE_EVENTS__TERM_TYPE_NAME: 1071 case PARSE_EVENTS__TERM_TYPE_METRIC_ID: 1072 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD: 1073 case PARSE_EVENTS__TERM_TYPE_PERCORE: 1074 return true; 1075 default: 1076 if (!err) 1077 return false; 1078 1079 /* term_type is validated so indexing is safe */ 1080 if (asprintf(&err_str, "'%s' is not usable in 'perf stat'", 1081 config_term_names[term_type]) >= 0) 1082 parse_events_error__handle(err, -1, err_str, NULL); 1083 return false; 1084 } 1085 } 1086 1087 void parse_events__shrink_config_terms(void) 1088 { 1089 config_term_shrinked = true; 1090 } 1091 1092 static int config_term_common(struct perf_event_attr *attr, 1093 struct parse_events_term *term, 1094 struct parse_events_error *err) 1095 { 1096 #define CHECK_TYPE_VAL(type) \ 1097 do { \ 1098 if (check_type_val(term, err, PARSE_EVENTS__TERM_TYPE_ ## type)) \ 1099 return -EINVAL; \ 1100 } while (0) 1101 1102 switch (term->type_term) { 1103 case PARSE_EVENTS__TERM_TYPE_CONFIG: 1104 CHECK_TYPE_VAL(NUM); 1105 attr->config = term->val.num; 1106 break; 1107 case PARSE_EVENTS__TERM_TYPE_CONFIG1: 1108 CHECK_TYPE_VAL(NUM); 1109 attr->config1 = term->val.num; 1110 break; 1111 case PARSE_EVENTS__TERM_TYPE_CONFIG2: 1112 CHECK_TYPE_VAL(NUM); 1113 attr->config2 = term->val.num; 1114 break; 1115 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD: 1116 CHECK_TYPE_VAL(NUM); 1117 break; 1118 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ: 1119 CHECK_TYPE_VAL(NUM); 1120 break; 1121 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE: 1122 CHECK_TYPE_VAL(STR); 1123 if (strcmp(term->val.str, "no") && 1124 parse_branch_str(term->val.str, 1125 &attr->branch_sample_type)) { 1126 parse_events_error__handle(err, term->err_val, 1127 strdup("invalid branch sample type"), 1128 NULL); 1129 return -EINVAL; 1130 } 1131 break; 1132 case PARSE_EVENTS__TERM_TYPE_TIME: 1133 CHECK_TYPE_VAL(NUM); 1134 if (term->val.num > 1) { 1135 parse_events_error__handle(err, term->err_val, 1136 strdup("expected 0 or 1"), 1137 NULL); 1138 return -EINVAL; 1139 } 1140 break; 1141 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH: 1142 CHECK_TYPE_VAL(STR); 1143 break; 1144 case PARSE_EVENTS__TERM_TYPE_STACKSIZE: 1145 CHECK_TYPE_VAL(NUM); 1146 break; 1147 case PARSE_EVENTS__TERM_TYPE_INHERIT: 1148 CHECK_TYPE_VAL(NUM); 1149 break; 1150 case PARSE_EVENTS__TERM_TYPE_NOINHERIT: 1151 CHECK_TYPE_VAL(NUM); 1152 break; 1153 case PARSE_EVENTS__TERM_TYPE_OVERWRITE: 1154 CHECK_TYPE_VAL(NUM); 1155 break; 1156 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE: 1157 CHECK_TYPE_VAL(NUM); 1158 break; 1159 case PARSE_EVENTS__TERM_TYPE_NAME: 1160 CHECK_TYPE_VAL(STR); 1161 break; 1162 case PARSE_EVENTS__TERM_TYPE_METRIC_ID: 1163 CHECK_TYPE_VAL(STR); 1164 break; 1165 case PARSE_EVENTS__TERM_TYPE_MAX_STACK: 1166 CHECK_TYPE_VAL(NUM); 1167 break; 1168 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS: 1169 CHECK_TYPE_VAL(NUM); 1170 break; 1171 case PARSE_EVENTS__TERM_TYPE_PERCORE: 1172 CHECK_TYPE_VAL(NUM); 1173 if ((unsigned int)term->val.num > 1) { 1174 parse_events_error__handle(err, term->err_val, 1175 strdup("expected 0 or 1"), 1176 NULL); 1177 return -EINVAL; 1178 } 1179 break; 1180 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT: 1181 CHECK_TYPE_VAL(NUM); 1182 break; 1183 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE: 1184 CHECK_TYPE_VAL(NUM); 1185 if (term->val.num > UINT_MAX) { 1186 parse_events_error__handle(err, term->err_val, 1187 strdup("too big"), 1188 NULL); 1189 return -EINVAL; 1190 } 1191 break; 1192 default: 1193 parse_events_error__handle(err, term->err_term, 1194 strdup("unknown term"), 1195 parse_events_formats_error_string(NULL)); 1196 return -EINVAL; 1197 } 1198 1199 /* 1200 * Check term availability after basic checking so 1201 * PARSE_EVENTS__TERM_TYPE_USER can be found and filtered. 1202 * 1203 * If check availability at the entry of this function, 1204 * user will see "'<sysfs term>' is not usable in 'perf stat'" 1205 * if an invalid config term is provided for legacy events 1206 * (for example, instructions/badterm/...), which is confusing. 1207 */ 1208 if (!config_term_avail(term->type_term, err)) 1209 return -EINVAL; 1210 return 0; 1211 #undef CHECK_TYPE_VAL 1212 } 1213 1214 static int config_term_pmu(struct perf_event_attr *attr, 1215 struct parse_events_term *term, 1216 struct parse_events_error *err) 1217 { 1218 if (term->type_term == PARSE_EVENTS__TERM_TYPE_USER || 1219 term->type_term == PARSE_EVENTS__TERM_TYPE_DRV_CFG) 1220 /* 1221 * Always succeed for sysfs terms, as we dont know 1222 * at this point what type they need to have. 1223 */ 1224 return 0; 1225 else 1226 return config_term_common(attr, term, err); 1227 } 1228 1229 static int config_term_tracepoint(struct perf_event_attr *attr, 1230 struct parse_events_term *term, 1231 struct parse_events_error *err) 1232 { 1233 switch (term->type_term) { 1234 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH: 1235 case PARSE_EVENTS__TERM_TYPE_STACKSIZE: 1236 case PARSE_EVENTS__TERM_TYPE_INHERIT: 1237 case PARSE_EVENTS__TERM_TYPE_NOINHERIT: 1238 case PARSE_EVENTS__TERM_TYPE_MAX_STACK: 1239 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS: 1240 case PARSE_EVENTS__TERM_TYPE_OVERWRITE: 1241 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE: 1242 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT: 1243 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE: 1244 return config_term_common(attr, term, err); 1245 default: 1246 if (err) { 1247 parse_events_error__handle(err, term->err_term, 1248 strdup("unknown term"), 1249 strdup("valid terms: call-graph,stack-size\n")); 1250 } 1251 return -EINVAL; 1252 } 1253 1254 return 0; 1255 } 1256 1257 static int config_attr(struct perf_event_attr *attr, 1258 struct list_head *head, 1259 struct parse_events_error *err, 1260 config_term_func_t config_term) 1261 { 1262 struct parse_events_term *term; 1263 1264 list_for_each_entry(term, head, list) 1265 if (config_term(attr, term, err)) 1266 return -EINVAL; 1267 1268 return 0; 1269 } 1270 1271 static int get_config_terms(struct list_head *head_config, 1272 struct list_head *head_terms __maybe_unused) 1273 { 1274 #define ADD_CONFIG_TERM(__type, __weak) \ 1275 struct evsel_config_term *__t; \ 1276 \ 1277 __t = zalloc(sizeof(*__t)); \ 1278 if (!__t) \ 1279 return -ENOMEM; \ 1280 \ 1281 INIT_LIST_HEAD(&__t->list); \ 1282 __t->type = EVSEL__CONFIG_TERM_ ## __type; \ 1283 __t->weak = __weak; \ 1284 list_add_tail(&__t->list, head_terms) 1285 1286 #define ADD_CONFIG_TERM_VAL(__type, __name, __val, __weak) \ 1287 do { \ 1288 ADD_CONFIG_TERM(__type, __weak); \ 1289 __t->val.__name = __val; \ 1290 } while (0) 1291 1292 #define ADD_CONFIG_TERM_STR(__type, __val, __weak) \ 1293 do { \ 1294 ADD_CONFIG_TERM(__type, __weak); \ 1295 __t->val.str = strdup(__val); \ 1296 if (!__t->val.str) { \ 1297 zfree(&__t); \ 1298 return -ENOMEM; \ 1299 } \ 1300 __t->free_str = true; \ 1301 } while (0) 1302 1303 struct parse_events_term *term; 1304 1305 list_for_each_entry(term, head_config, list) { 1306 switch (term->type_term) { 1307 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD: 1308 ADD_CONFIG_TERM_VAL(PERIOD, period, term->val.num, term->weak); 1309 break; 1310 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ: 1311 ADD_CONFIG_TERM_VAL(FREQ, freq, term->val.num, term->weak); 1312 break; 1313 case PARSE_EVENTS__TERM_TYPE_TIME: 1314 ADD_CONFIG_TERM_VAL(TIME, time, term->val.num, term->weak); 1315 break; 1316 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH: 1317 ADD_CONFIG_TERM_STR(CALLGRAPH, term->val.str, term->weak); 1318 break; 1319 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE: 1320 ADD_CONFIG_TERM_STR(BRANCH, term->val.str, term->weak); 1321 break; 1322 case PARSE_EVENTS__TERM_TYPE_STACKSIZE: 1323 ADD_CONFIG_TERM_VAL(STACK_USER, stack_user, 1324 term->val.num, term->weak); 1325 break; 1326 case PARSE_EVENTS__TERM_TYPE_INHERIT: 1327 ADD_CONFIG_TERM_VAL(INHERIT, inherit, 1328 term->val.num ? 1 : 0, term->weak); 1329 break; 1330 case PARSE_EVENTS__TERM_TYPE_NOINHERIT: 1331 ADD_CONFIG_TERM_VAL(INHERIT, inherit, 1332 term->val.num ? 0 : 1, term->weak); 1333 break; 1334 case PARSE_EVENTS__TERM_TYPE_MAX_STACK: 1335 ADD_CONFIG_TERM_VAL(MAX_STACK, max_stack, 1336 term->val.num, term->weak); 1337 break; 1338 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS: 1339 ADD_CONFIG_TERM_VAL(MAX_EVENTS, max_events, 1340 term->val.num, term->weak); 1341 break; 1342 case PARSE_EVENTS__TERM_TYPE_OVERWRITE: 1343 ADD_CONFIG_TERM_VAL(OVERWRITE, overwrite, 1344 term->val.num ? 1 : 0, term->weak); 1345 break; 1346 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE: 1347 ADD_CONFIG_TERM_VAL(OVERWRITE, overwrite, 1348 term->val.num ? 0 : 1, term->weak); 1349 break; 1350 case PARSE_EVENTS__TERM_TYPE_DRV_CFG: 1351 ADD_CONFIG_TERM_STR(DRV_CFG, term->val.str, term->weak); 1352 break; 1353 case PARSE_EVENTS__TERM_TYPE_PERCORE: 1354 ADD_CONFIG_TERM_VAL(PERCORE, percore, 1355 term->val.num ? true : false, term->weak); 1356 break; 1357 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT: 1358 ADD_CONFIG_TERM_VAL(AUX_OUTPUT, aux_output, 1359 term->val.num ? 1 : 0, term->weak); 1360 break; 1361 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE: 1362 ADD_CONFIG_TERM_VAL(AUX_SAMPLE_SIZE, aux_sample_size, 1363 term->val.num, term->weak); 1364 break; 1365 default: 1366 break; 1367 } 1368 } 1369 return 0; 1370 } 1371 1372 /* 1373 * Add EVSEL__CONFIG_TERM_CFG_CHG where cfg_chg will have a bit set for 1374 * each bit of attr->config that the user has changed. 1375 */ 1376 static int get_config_chgs(struct perf_pmu *pmu, struct list_head *head_config, 1377 struct list_head *head_terms) 1378 { 1379 struct parse_events_term *term; 1380 u64 bits = 0; 1381 int type; 1382 1383 list_for_each_entry(term, head_config, list) { 1384 switch (term->type_term) { 1385 case PARSE_EVENTS__TERM_TYPE_USER: 1386 type = perf_pmu__format_type(&pmu->format, term->config); 1387 if (type != PERF_PMU_FORMAT_VALUE_CONFIG) 1388 continue; 1389 bits |= perf_pmu__format_bits(&pmu->format, term->config); 1390 break; 1391 case PARSE_EVENTS__TERM_TYPE_CONFIG: 1392 bits = ~(u64)0; 1393 break; 1394 default: 1395 break; 1396 } 1397 } 1398 1399 if (bits) 1400 ADD_CONFIG_TERM_VAL(CFG_CHG, cfg_chg, bits, false); 1401 1402 #undef ADD_CONFIG_TERM 1403 return 0; 1404 } 1405 1406 int parse_events_add_tracepoint(struct list_head *list, int *idx, 1407 const char *sys, const char *event, 1408 struct parse_events_error *err, 1409 struct list_head *head_config) 1410 { 1411 if (head_config) { 1412 struct perf_event_attr attr; 1413 1414 if (config_attr(&attr, head_config, err, 1415 config_term_tracepoint)) 1416 return -EINVAL; 1417 } 1418 1419 if (strpbrk(sys, "*?")) 1420 return add_tracepoint_multi_sys(list, idx, sys, event, 1421 err, head_config); 1422 else 1423 return add_tracepoint_event(list, idx, sys, event, 1424 err, head_config); 1425 } 1426 1427 int parse_events_add_numeric(struct parse_events_state *parse_state, 1428 struct list_head *list, 1429 u32 type, u64 config, 1430 struct list_head *head_config) 1431 { 1432 struct perf_event_attr attr; 1433 LIST_HEAD(config_terms); 1434 const char *name, *metric_id; 1435 bool hybrid; 1436 int ret; 1437 1438 memset(&attr, 0, sizeof(attr)); 1439 attr.type = type; 1440 attr.config = config; 1441 1442 if (head_config) { 1443 if (config_attr(&attr, head_config, parse_state->error, 1444 config_term_common)) 1445 return -EINVAL; 1446 1447 if (get_config_terms(head_config, &config_terms)) 1448 return -ENOMEM; 1449 } 1450 1451 name = get_config_name(head_config); 1452 metric_id = get_config_metric_id(head_config); 1453 ret = parse_events__add_numeric_hybrid(parse_state, list, &attr, 1454 name, metric_id, 1455 &config_terms, &hybrid); 1456 if (hybrid) 1457 goto out_free_terms; 1458 1459 ret = add_event(list, &parse_state->idx, &attr, name, metric_id, 1460 &config_terms); 1461 out_free_terms: 1462 free_config_terms(&config_terms); 1463 return ret; 1464 } 1465 1466 int parse_events_add_tool(struct parse_events_state *parse_state, 1467 struct list_head *list, 1468 int tool_event) 1469 { 1470 return add_event_tool(list, &parse_state->idx, tool_event); 1471 } 1472 1473 static bool config_term_percore(struct list_head *config_terms) 1474 { 1475 struct evsel_config_term *term; 1476 1477 list_for_each_entry(term, config_terms, list) { 1478 if (term->type == EVSEL__CONFIG_TERM_PERCORE) 1479 return term->val.percore; 1480 } 1481 1482 return false; 1483 } 1484 1485 static int parse_events__inside_hybrid_pmu(struct parse_events_state *parse_state, 1486 struct list_head *list, char *name, 1487 struct list_head *head_config) 1488 { 1489 struct parse_events_term *term; 1490 int ret = -1; 1491 1492 if (parse_state->fake_pmu || !head_config || list_empty(head_config) || 1493 !perf_pmu__is_hybrid(name)) { 1494 return -1; 1495 } 1496 1497 /* 1498 * More than one term in list. 1499 */ 1500 if (head_config->next && head_config->next->next != head_config) 1501 return -1; 1502 1503 term = list_first_entry(head_config, struct parse_events_term, list); 1504 if (term && term->config && strcmp(term->config, "event")) { 1505 ret = parse_events__with_hybrid_pmu(parse_state, term->config, 1506 name, list); 1507 } 1508 1509 return ret; 1510 } 1511 1512 int parse_events_add_pmu(struct parse_events_state *parse_state, 1513 struct list_head *list, char *name, 1514 struct list_head *head_config, 1515 bool auto_merge_stats, 1516 bool use_alias) 1517 { 1518 struct perf_event_attr attr; 1519 struct perf_pmu_info info; 1520 struct perf_pmu *pmu; 1521 struct evsel *evsel; 1522 struct parse_events_error *err = parse_state->error; 1523 bool use_uncore_alias; 1524 LIST_HEAD(config_terms); 1525 1526 if (verbose > 1) { 1527 fprintf(stderr, "Attempting to add event pmu '%s' with '", 1528 name); 1529 if (head_config) { 1530 struct parse_events_term *term; 1531 1532 list_for_each_entry(term, head_config, list) { 1533 fprintf(stderr, "%s,", term->config); 1534 } 1535 } 1536 fprintf(stderr, "' that may result in non-fatal errors\n"); 1537 } 1538 1539 pmu = parse_state->fake_pmu ?: perf_pmu__find(name); 1540 if (!pmu) { 1541 char *err_str; 1542 1543 if (asprintf(&err_str, 1544 "Cannot find PMU `%s'. Missing kernel support?", 1545 name) >= 0) 1546 parse_events_error__handle(err, 0, err_str, NULL); 1547 return -EINVAL; 1548 } 1549 1550 if (pmu->default_config) { 1551 memcpy(&attr, pmu->default_config, 1552 sizeof(struct perf_event_attr)); 1553 } else { 1554 memset(&attr, 0, sizeof(attr)); 1555 } 1556 1557 use_uncore_alias = (pmu->is_uncore && use_alias); 1558 1559 if (!head_config) { 1560 attr.type = pmu->type; 1561 evsel = __add_event(list, &parse_state->idx, &attr, 1562 /*init_attr=*/true, /*name=*/NULL, 1563 /*metric_id=*/NULL, pmu, 1564 /*config_terms=*/NULL, auto_merge_stats, 1565 /*cpu_list=*/NULL); 1566 if (evsel) { 1567 evsel->pmu_name = name ? strdup(name) : NULL; 1568 evsel->use_uncore_alias = use_uncore_alias; 1569 return 0; 1570 } else { 1571 return -ENOMEM; 1572 } 1573 } 1574 1575 if (!parse_state->fake_pmu && perf_pmu__check_alias(pmu, head_config, &info)) 1576 return -EINVAL; 1577 1578 if (verbose > 1) { 1579 fprintf(stderr, "After aliases, add event pmu '%s' with '", 1580 name); 1581 if (head_config) { 1582 struct parse_events_term *term; 1583 1584 list_for_each_entry(term, head_config, list) { 1585 fprintf(stderr, "%s,", term->config); 1586 } 1587 } 1588 fprintf(stderr, "' that may result in non-fatal errors\n"); 1589 } 1590 1591 /* 1592 * Configure hardcoded terms first, no need to check 1593 * return value when called with fail == 0 ;) 1594 */ 1595 if (config_attr(&attr, head_config, parse_state->error, config_term_pmu)) 1596 return -EINVAL; 1597 1598 if (get_config_terms(head_config, &config_terms)) 1599 return -ENOMEM; 1600 1601 /* 1602 * When using default config, record which bits of attr->config were 1603 * changed by the user. 1604 */ 1605 if (pmu->default_config && get_config_chgs(pmu, head_config, &config_terms)) 1606 return -ENOMEM; 1607 1608 if (!parse_events__inside_hybrid_pmu(parse_state, list, name, 1609 head_config)) { 1610 return 0; 1611 } 1612 1613 if (!parse_state->fake_pmu && perf_pmu__config(pmu, &attr, head_config, parse_state->error)) { 1614 free_config_terms(&config_terms); 1615 return -EINVAL; 1616 } 1617 1618 evsel = __add_event(list, &parse_state->idx, &attr, /*init_attr=*/true, 1619 get_config_name(head_config), 1620 get_config_metric_id(head_config), pmu, 1621 &config_terms, auto_merge_stats, /*cpu_list=*/NULL); 1622 if (!evsel) 1623 return -ENOMEM; 1624 1625 if (evsel->name) 1626 evsel->use_config_name = true; 1627 1628 evsel->pmu_name = name ? strdup(name) : NULL; 1629 evsel->use_uncore_alias = use_uncore_alias; 1630 evsel->percore = config_term_percore(&evsel->config_terms); 1631 1632 if (parse_state->fake_pmu) 1633 return 0; 1634 1635 free((char *)evsel->unit); 1636 evsel->unit = strdup(info.unit); 1637 evsel->scale = info.scale; 1638 evsel->per_pkg = info.per_pkg; 1639 evsel->snapshot = info.snapshot; 1640 evsel->metric_expr = info.metric_expr; 1641 evsel->metric_name = info.metric_name; 1642 return 0; 1643 } 1644 1645 int parse_events_multi_pmu_add(struct parse_events_state *parse_state, 1646 char *str, struct list_head *head, 1647 struct list_head **listp) 1648 { 1649 struct parse_events_term *term; 1650 struct list_head *list = NULL; 1651 struct list_head *orig_head = NULL; 1652 struct perf_pmu *pmu = NULL; 1653 int ok = 0; 1654 char *config; 1655 1656 *listp = NULL; 1657 1658 if (!head) { 1659 head = malloc(sizeof(struct list_head)); 1660 if (!head) 1661 goto out_err; 1662 1663 INIT_LIST_HEAD(head); 1664 } 1665 config = strdup(str); 1666 if (!config) 1667 goto out_err; 1668 1669 if (parse_events_term__num(&term, 1670 PARSE_EVENTS__TERM_TYPE_USER, 1671 config, 1, false, &config, 1672 NULL) < 0) { 1673 free(config); 1674 goto out_err; 1675 } 1676 list_add_tail(&term->list, head); 1677 1678 /* Add it for all PMUs that support the alias */ 1679 list = malloc(sizeof(struct list_head)); 1680 if (!list) 1681 goto out_err; 1682 1683 INIT_LIST_HEAD(list); 1684 1685 while ((pmu = perf_pmu__scan(pmu)) != NULL) { 1686 struct perf_pmu_alias *alias; 1687 1688 list_for_each_entry(alias, &pmu->aliases, list) { 1689 if (!strcasecmp(alias->name, str)) { 1690 parse_events_copy_term_list(head, &orig_head); 1691 if (!parse_events_add_pmu(parse_state, list, 1692 pmu->name, orig_head, 1693 true, true)) { 1694 pr_debug("%s -> %s/%s/\n", str, 1695 pmu->name, alias->str); 1696 ok++; 1697 } 1698 parse_events_terms__delete(orig_head); 1699 } 1700 } 1701 } 1702 1703 if (parse_state->fake_pmu) { 1704 if (!parse_events_add_pmu(parse_state, list, str, head, 1705 true, true)) { 1706 pr_debug("%s -> %s/%s/\n", str, "fake_pmu", str); 1707 ok++; 1708 } 1709 } 1710 1711 out_err: 1712 if (ok) 1713 *listp = list; 1714 else 1715 free(list); 1716 1717 parse_events_terms__delete(head); 1718 return ok ? 0 : -1; 1719 } 1720 1721 int parse_events__modifier_group(struct list_head *list, 1722 char *event_mod) 1723 { 1724 return parse_events__modifier_event(list, event_mod, true); 1725 } 1726 1727 /* 1728 * Check if the two uncore PMUs are from the same uncore block 1729 * The format of the uncore PMU name is uncore_#blockname_#pmuidx 1730 */ 1731 static bool is_same_uncore_block(const char *pmu_name_a, const char *pmu_name_b) 1732 { 1733 char *end_a, *end_b; 1734 1735 end_a = strrchr(pmu_name_a, '_'); 1736 end_b = strrchr(pmu_name_b, '_'); 1737 1738 if (!end_a || !end_b) 1739 return false; 1740 1741 if ((end_a - pmu_name_a) != (end_b - pmu_name_b)) 1742 return false; 1743 1744 return (strncmp(pmu_name_a, pmu_name_b, end_a - pmu_name_a) == 0); 1745 } 1746 1747 static int 1748 parse_events__set_leader_for_uncore_aliase(char *name, struct list_head *list, 1749 struct parse_events_state *parse_state) 1750 { 1751 struct evsel *evsel, *leader; 1752 uintptr_t *leaders; 1753 bool is_leader = true; 1754 int i, nr_pmu = 0, total_members, ret = 0; 1755 1756 leader = list_first_entry(list, struct evsel, core.node); 1757 evsel = list_last_entry(list, struct evsel, core.node); 1758 total_members = evsel->core.idx - leader->core.idx + 1; 1759 1760 leaders = calloc(total_members, sizeof(uintptr_t)); 1761 if (WARN_ON(!leaders)) 1762 return 0; 1763 1764 /* 1765 * Going through the whole group and doing sanity check. 1766 * All members must use alias, and be from the same uncore block. 1767 * Also, storing the leader events in an array. 1768 */ 1769 __evlist__for_each_entry(list, evsel) { 1770 1771 /* Only split the uncore group which members use alias */ 1772 if (!evsel->use_uncore_alias) 1773 goto out; 1774 1775 /* The events must be from the same uncore block */ 1776 if (!is_same_uncore_block(leader->pmu_name, evsel->pmu_name)) 1777 goto out; 1778 1779 if (!is_leader) 1780 continue; 1781 /* 1782 * If the event's PMU name starts to repeat, it must be a new 1783 * event. That can be used to distinguish the leader from 1784 * other members, even they have the same event name. 1785 */ 1786 if ((leader != evsel) && 1787 !strcmp(leader->pmu_name, evsel->pmu_name)) { 1788 is_leader = false; 1789 continue; 1790 } 1791 1792 /* Store the leader event for each PMU */ 1793 leaders[nr_pmu++] = (uintptr_t) evsel; 1794 } 1795 1796 /* only one event alias */ 1797 if (nr_pmu == total_members) { 1798 parse_state->nr_groups--; 1799 goto handled; 1800 } 1801 1802 /* 1803 * An uncore event alias is a joint name which means the same event 1804 * runs on all PMUs of a block. 1805 * Perf doesn't support mixed events from different PMUs in the same 1806 * group. The big group has to be split into multiple small groups 1807 * which only include the events from the same PMU. 1808 * 1809 * Here the uncore event aliases must be from the same uncore block. 1810 * The number of PMUs must be same for each alias. The number of new 1811 * small groups equals to the number of PMUs. 1812 * Setting the leader event for corresponding members in each group. 1813 */ 1814 i = 0; 1815 __evlist__for_each_entry(list, evsel) { 1816 if (i >= nr_pmu) 1817 i = 0; 1818 evsel__set_leader(evsel, (struct evsel *) leaders[i++]); 1819 } 1820 1821 /* The number of members and group name are same for each group */ 1822 for (i = 0; i < nr_pmu; i++) { 1823 evsel = (struct evsel *) leaders[i]; 1824 evsel->core.nr_members = total_members / nr_pmu; 1825 evsel->group_name = name ? strdup(name) : NULL; 1826 } 1827 1828 /* Take the new small groups into account */ 1829 parse_state->nr_groups += nr_pmu - 1; 1830 1831 handled: 1832 ret = 1; 1833 out: 1834 free(leaders); 1835 return ret; 1836 } 1837 1838 __weak struct evsel *arch_evlist__leader(struct list_head *list) 1839 { 1840 return list_first_entry(list, struct evsel, core.node); 1841 } 1842 1843 void parse_events__set_leader(char *name, struct list_head *list, 1844 struct parse_events_state *parse_state) 1845 { 1846 struct evsel *leader; 1847 1848 if (list_empty(list)) { 1849 WARN_ONCE(true, "WARNING: failed to set leader: empty list"); 1850 return; 1851 } 1852 1853 if (parse_events__set_leader_for_uncore_aliase(name, list, parse_state)) 1854 return; 1855 1856 leader = arch_evlist__leader(list); 1857 __perf_evlist__set_leader(list, &leader->core); 1858 leader->group_name = name ? strdup(name) : NULL; 1859 list_move(&leader->core.node, list); 1860 } 1861 1862 /* list_event is assumed to point to malloc'ed memory */ 1863 void parse_events_update_lists(struct list_head *list_event, 1864 struct list_head *list_all) 1865 { 1866 /* 1867 * Called for single event definition. Update the 1868 * 'all event' list, and reinit the 'single event' 1869 * list, for next event definition. 1870 */ 1871 list_splice_tail(list_event, list_all); 1872 free(list_event); 1873 } 1874 1875 struct event_modifier { 1876 int eu; 1877 int ek; 1878 int eh; 1879 int eH; 1880 int eG; 1881 int eI; 1882 int precise; 1883 int precise_max; 1884 int exclude_GH; 1885 int sample_read; 1886 int pinned; 1887 int weak; 1888 int exclusive; 1889 int bpf_counter; 1890 }; 1891 1892 static int get_event_modifier(struct event_modifier *mod, char *str, 1893 struct evsel *evsel) 1894 { 1895 int eu = evsel ? evsel->core.attr.exclude_user : 0; 1896 int ek = evsel ? evsel->core.attr.exclude_kernel : 0; 1897 int eh = evsel ? evsel->core.attr.exclude_hv : 0; 1898 int eH = evsel ? evsel->core.attr.exclude_host : 0; 1899 int eG = evsel ? evsel->core.attr.exclude_guest : 0; 1900 int eI = evsel ? evsel->core.attr.exclude_idle : 0; 1901 int precise = evsel ? evsel->core.attr.precise_ip : 0; 1902 int precise_max = 0; 1903 int sample_read = 0; 1904 int pinned = evsel ? evsel->core.attr.pinned : 0; 1905 int exclusive = evsel ? evsel->core.attr.exclusive : 0; 1906 1907 int exclude = eu | ek | eh; 1908 int exclude_GH = evsel ? evsel->exclude_GH : 0; 1909 int weak = 0; 1910 int bpf_counter = 0; 1911 1912 memset(mod, 0, sizeof(*mod)); 1913 1914 while (*str) { 1915 if (*str == 'u') { 1916 if (!exclude) 1917 exclude = eu = ek = eh = 1; 1918 if (!exclude_GH && !perf_guest) 1919 eG = 1; 1920 eu = 0; 1921 } else if (*str == 'k') { 1922 if (!exclude) 1923 exclude = eu = ek = eh = 1; 1924 ek = 0; 1925 } else if (*str == 'h') { 1926 if (!exclude) 1927 exclude = eu = ek = eh = 1; 1928 eh = 0; 1929 } else if (*str == 'G') { 1930 if (!exclude_GH) 1931 exclude_GH = eG = eH = 1; 1932 eG = 0; 1933 } else if (*str == 'H') { 1934 if (!exclude_GH) 1935 exclude_GH = eG = eH = 1; 1936 eH = 0; 1937 } else if (*str == 'I') { 1938 eI = 1; 1939 } else if (*str == 'p') { 1940 precise++; 1941 /* use of precise requires exclude_guest */ 1942 if (!exclude_GH) 1943 eG = 1; 1944 } else if (*str == 'P') { 1945 precise_max = 1; 1946 } else if (*str == 'S') { 1947 sample_read = 1; 1948 } else if (*str == 'D') { 1949 pinned = 1; 1950 } else if (*str == 'e') { 1951 exclusive = 1; 1952 } else if (*str == 'W') { 1953 weak = 1; 1954 } else if (*str == 'b') { 1955 bpf_counter = 1; 1956 } else 1957 break; 1958 1959 ++str; 1960 } 1961 1962 /* 1963 * precise ip: 1964 * 1965 * 0 - SAMPLE_IP can have arbitrary skid 1966 * 1 - SAMPLE_IP must have constant skid 1967 * 2 - SAMPLE_IP requested to have 0 skid 1968 * 3 - SAMPLE_IP must have 0 skid 1969 * 1970 * See also PERF_RECORD_MISC_EXACT_IP 1971 */ 1972 if (precise > 3) 1973 return -EINVAL; 1974 1975 mod->eu = eu; 1976 mod->ek = ek; 1977 mod->eh = eh; 1978 mod->eH = eH; 1979 mod->eG = eG; 1980 mod->eI = eI; 1981 mod->precise = precise; 1982 mod->precise_max = precise_max; 1983 mod->exclude_GH = exclude_GH; 1984 mod->sample_read = sample_read; 1985 mod->pinned = pinned; 1986 mod->weak = weak; 1987 mod->bpf_counter = bpf_counter; 1988 mod->exclusive = exclusive; 1989 1990 return 0; 1991 } 1992 1993 /* 1994 * Basic modifier sanity check to validate it contains only one 1995 * instance of any modifier (apart from 'p') present. 1996 */ 1997 static int check_modifier(char *str) 1998 { 1999 char *p = str; 2000 2001 /* The sizeof includes 0 byte as well. */ 2002 if (strlen(str) > (sizeof("ukhGHpppPSDIWeb") - 1)) 2003 return -1; 2004 2005 while (*p) { 2006 if (*p != 'p' && strchr(p + 1, *p)) 2007 return -1; 2008 p++; 2009 } 2010 2011 return 0; 2012 } 2013 2014 int parse_events__modifier_event(struct list_head *list, char *str, bool add) 2015 { 2016 struct evsel *evsel; 2017 struct event_modifier mod; 2018 2019 if (str == NULL) 2020 return 0; 2021 2022 if (check_modifier(str)) 2023 return -EINVAL; 2024 2025 if (!add && get_event_modifier(&mod, str, NULL)) 2026 return -EINVAL; 2027 2028 __evlist__for_each_entry(list, evsel) { 2029 if (add && get_event_modifier(&mod, str, evsel)) 2030 return -EINVAL; 2031 2032 evsel->core.attr.exclude_user = mod.eu; 2033 evsel->core.attr.exclude_kernel = mod.ek; 2034 evsel->core.attr.exclude_hv = mod.eh; 2035 evsel->core.attr.precise_ip = mod.precise; 2036 evsel->core.attr.exclude_host = mod.eH; 2037 evsel->core.attr.exclude_guest = mod.eG; 2038 evsel->core.attr.exclude_idle = mod.eI; 2039 evsel->exclude_GH = mod.exclude_GH; 2040 evsel->sample_read = mod.sample_read; 2041 evsel->precise_max = mod.precise_max; 2042 evsel->weak_group = mod.weak; 2043 evsel->bpf_counter = mod.bpf_counter; 2044 2045 if (evsel__is_group_leader(evsel)) { 2046 evsel->core.attr.pinned = mod.pinned; 2047 evsel->core.attr.exclusive = mod.exclusive; 2048 } 2049 } 2050 2051 return 0; 2052 } 2053 2054 int parse_events_name(struct list_head *list, const char *name) 2055 { 2056 struct evsel *evsel; 2057 2058 __evlist__for_each_entry(list, evsel) { 2059 if (!evsel->name) 2060 evsel->name = strdup(name); 2061 } 2062 2063 return 0; 2064 } 2065 2066 static int 2067 comp_pmu(const void *p1, const void *p2) 2068 { 2069 struct perf_pmu_event_symbol *pmu1 = (struct perf_pmu_event_symbol *) p1; 2070 struct perf_pmu_event_symbol *pmu2 = (struct perf_pmu_event_symbol *) p2; 2071 2072 return strcasecmp(pmu1->symbol, pmu2->symbol); 2073 } 2074 2075 static void perf_pmu__parse_cleanup(void) 2076 { 2077 if (perf_pmu_events_list_num > 0) { 2078 struct perf_pmu_event_symbol *p; 2079 int i; 2080 2081 for (i = 0; i < perf_pmu_events_list_num; i++) { 2082 p = perf_pmu_events_list + i; 2083 zfree(&p->symbol); 2084 } 2085 zfree(&perf_pmu_events_list); 2086 perf_pmu_events_list_num = 0; 2087 } 2088 } 2089 2090 #define SET_SYMBOL(str, stype) \ 2091 do { \ 2092 p->symbol = str; \ 2093 if (!p->symbol) \ 2094 goto err; \ 2095 p->type = stype; \ 2096 } while (0) 2097 2098 /* 2099 * Read the pmu events list from sysfs 2100 * Save it into perf_pmu_events_list 2101 */ 2102 static void perf_pmu__parse_init(void) 2103 { 2104 2105 struct perf_pmu *pmu = NULL; 2106 struct perf_pmu_alias *alias; 2107 int len = 0; 2108 2109 pmu = NULL; 2110 while ((pmu = perf_pmu__scan(pmu)) != NULL) { 2111 list_for_each_entry(alias, &pmu->aliases, list) { 2112 char *tmp = strchr(alias->name, '-'); 2113 2114 if (tmp) { 2115 char *tmp2 = NULL; 2116 2117 tmp2 = strchr(tmp + 1, '-'); 2118 len++; 2119 if (tmp2) 2120 len++; 2121 } 2122 2123 len++; 2124 } 2125 } 2126 2127 if (len == 0) { 2128 perf_pmu_events_list_num = -1; 2129 return; 2130 } 2131 perf_pmu_events_list = malloc(sizeof(struct perf_pmu_event_symbol) * len); 2132 if (!perf_pmu_events_list) 2133 return; 2134 perf_pmu_events_list_num = len; 2135 2136 len = 0; 2137 pmu = NULL; 2138 while ((pmu = perf_pmu__scan(pmu)) != NULL) { 2139 list_for_each_entry(alias, &pmu->aliases, list) { 2140 struct perf_pmu_event_symbol *p = perf_pmu_events_list + len; 2141 char *tmp = strchr(alias->name, '-'); 2142 char *tmp2 = NULL; 2143 2144 if (tmp) 2145 tmp2 = strchr(tmp + 1, '-'); 2146 if (tmp2) { 2147 SET_SYMBOL(strndup(alias->name, tmp - alias->name), 2148 PMU_EVENT_SYMBOL_PREFIX); 2149 p++; 2150 tmp++; 2151 SET_SYMBOL(strndup(tmp, tmp2 - tmp), PMU_EVENT_SYMBOL_SUFFIX); 2152 p++; 2153 SET_SYMBOL(strdup(++tmp2), PMU_EVENT_SYMBOL_SUFFIX2); 2154 len += 3; 2155 } else if (tmp) { 2156 SET_SYMBOL(strndup(alias->name, tmp - alias->name), 2157 PMU_EVENT_SYMBOL_PREFIX); 2158 p++; 2159 SET_SYMBOL(strdup(++tmp), PMU_EVENT_SYMBOL_SUFFIX); 2160 len += 2; 2161 } else { 2162 SET_SYMBOL(strdup(alias->name), PMU_EVENT_SYMBOL); 2163 len++; 2164 } 2165 } 2166 } 2167 qsort(perf_pmu_events_list, len, 2168 sizeof(struct perf_pmu_event_symbol), comp_pmu); 2169 2170 return; 2171 err: 2172 perf_pmu__parse_cleanup(); 2173 } 2174 2175 /* 2176 * This function injects special term in 2177 * perf_pmu_events_list so the test code 2178 * can check on this functionality. 2179 */ 2180 int perf_pmu__test_parse_init(void) 2181 { 2182 struct perf_pmu_event_symbol *list, *tmp, symbols[] = { 2183 {(char *)"read", PMU_EVENT_SYMBOL}, 2184 {(char *)"event", PMU_EVENT_SYMBOL_PREFIX}, 2185 {(char *)"two", PMU_EVENT_SYMBOL_SUFFIX}, 2186 {(char *)"hyphen", PMU_EVENT_SYMBOL_SUFFIX}, 2187 {(char *)"hyph", PMU_EVENT_SYMBOL_SUFFIX2}, 2188 }; 2189 unsigned long i, j; 2190 2191 tmp = list = malloc(sizeof(*list) * ARRAY_SIZE(symbols)); 2192 if (!list) 2193 return -ENOMEM; 2194 2195 for (i = 0; i < ARRAY_SIZE(symbols); i++, tmp++) { 2196 tmp->type = symbols[i].type; 2197 tmp->symbol = strdup(symbols[i].symbol); 2198 if (!tmp->symbol) 2199 goto err_free; 2200 } 2201 2202 perf_pmu_events_list = list; 2203 perf_pmu_events_list_num = ARRAY_SIZE(symbols); 2204 2205 qsort(perf_pmu_events_list, ARRAY_SIZE(symbols), 2206 sizeof(struct perf_pmu_event_symbol), comp_pmu); 2207 return 0; 2208 2209 err_free: 2210 for (j = 0, tmp = list; j < i; j++, tmp++) 2211 free(tmp->symbol); 2212 free(list); 2213 return -ENOMEM; 2214 } 2215 2216 enum perf_pmu_event_symbol_type 2217 perf_pmu__parse_check(const char *name) 2218 { 2219 struct perf_pmu_event_symbol p, *r; 2220 2221 /* scan kernel pmu events from sysfs if needed */ 2222 if (perf_pmu_events_list_num == 0) 2223 perf_pmu__parse_init(); 2224 /* 2225 * name "cpu" could be prefix of cpu-cycles or cpu// events. 2226 * cpu-cycles has been handled by hardcode. 2227 * So it must be cpu// events, not kernel pmu event. 2228 */ 2229 if ((perf_pmu_events_list_num <= 0) || !strcmp(name, "cpu")) 2230 return PMU_EVENT_SYMBOL_ERR; 2231 2232 p.symbol = strdup(name); 2233 r = bsearch(&p, perf_pmu_events_list, 2234 (size_t) perf_pmu_events_list_num, 2235 sizeof(struct perf_pmu_event_symbol), comp_pmu); 2236 zfree(&p.symbol); 2237 return r ? r->type : PMU_EVENT_SYMBOL_ERR; 2238 } 2239 2240 static int parse_events__scanner(const char *str, 2241 struct parse_events_state *parse_state) 2242 { 2243 YY_BUFFER_STATE buffer; 2244 void *scanner; 2245 int ret; 2246 2247 ret = parse_events_lex_init_extra(parse_state, &scanner); 2248 if (ret) 2249 return ret; 2250 2251 buffer = parse_events__scan_string(str, scanner); 2252 2253 #ifdef PARSER_DEBUG 2254 parse_events_debug = 1; 2255 parse_events_set_debug(1, scanner); 2256 #endif 2257 ret = parse_events_parse(parse_state, scanner); 2258 2259 parse_events__flush_buffer(buffer, scanner); 2260 parse_events__delete_buffer(buffer, scanner); 2261 parse_events_lex_destroy(scanner); 2262 return ret; 2263 } 2264 2265 /* 2266 * parse event config string, return a list of event terms. 2267 */ 2268 int parse_events_terms(struct list_head *terms, const char *str) 2269 { 2270 struct parse_events_state parse_state = { 2271 .terms = NULL, 2272 .stoken = PE_START_TERMS, 2273 }; 2274 int ret; 2275 2276 ret = parse_events__scanner(str, &parse_state); 2277 perf_pmu__parse_cleanup(); 2278 2279 if (!ret) { 2280 list_splice(parse_state.terms, terms); 2281 zfree(&parse_state.terms); 2282 return 0; 2283 } 2284 2285 parse_events_terms__delete(parse_state.terms); 2286 return ret; 2287 } 2288 2289 static int parse_events__with_hybrid_pmu(struct parse_events_state *parse_state, 2290 const char *str, char *pmu_name, 2291 struct list_head *list) 2292 { 2293 struct parse_events_state ps = { 2294 .list = LIST_HEAD_INIT(ps.list), 2295 .stoken = PE_START_EVENTS, 2296 .hybrid_pmu_name = pmu_name, 2297 .idx = parse_state->idx, 2298 }; 2299 int ret; 2300 2301 ret = parse_events__scanner(str, &ps); 2302 perf_pmu__parse_cleanup(); 2303 2304 if (!ret) { 2305 if (!list_empty(&ps.list)) { 2306 list_splice(&ps.list, list); 2307 parse_state->idx = ps.idx; 2308 return 0; 2309 } else 2310 return -1; 2311 } 2312 2313 return ret; 2314 } 2315 2316 int __parse_events(struct evlist *evlist, const char *str, 2317 struct parse_events_error *err, struct perf_pmu *fake_pmu) 2318 { 2319 struct parse_events_state parse_state = { 2320 .list = LIST_HEAD_INIT(parse_state.list), 2321 .idx = evlist->core.nr_entries, 2322 .error = err, 2323 .evlist = evlist, 2324 .stoken = PE_START_EVENTS, 2325 .fake_pmu = fake_pmu, 2326 }; 2327 int ret; 2328 2329 ret = parse_events__scanner(str, &parse_state); 2330 perf_pmu__parse_cleanup(); 2331 2332 if (!ret && list_empty(&parse_state.list)) { 2333 WARN_ONCE(true, "WARNING: event parser found nothing\n"); 2334 return -1; 2335 } 2336 2337 /* 2338 * Add list to the evlist even with errors to allow callers to clean up. 2339 */ 2340 evlist__splice_list_tail(evlist, &parse_state.list); 2341 2342 if (!ret) { 2343 struct evsel *last; 2344 2345 evlist->core.nr_groups += parse_state.nr_groups; 2346 last = evlist__last(evlist); 2347 last->cmdline_group_boundary = true; 2348 2349 return 0; 2350 } 2351 2352 /* 2353 * There are 2 users - builtin-record and builtin-test objects. 2354 * Both call evlist__delete in case of error, so we dont 2355 * need to bother. 2356 */ 2357 return ret; 2358 } 2359 2360 void parse_events_error__init(struct parse_events_error *err) 2361 { 2362 bzero(err, sizeof(*err)); 2363 } 2364 2365 void parse_events_error__exit(struct parse_events_error *err) 2366 { 2367 zfree(&err->str); 2368 zfree(&err->help); 2369 zfree(&err->first_str); 2370 zfree(&err->first_help); 2371 } 2372 2373 void parse_events_error__handle(struct parse_events_error *err, int idx, 2374 char *str, char *help) 2375 { 2376 if (WARN(!str, "WARNING: failed to provide error string\n")) { 2377 free(help); 2378 return; 2379 } 2380 switch (err->num_errors) { 2381 case 0: 2382 err->idx = idx; 2383 err->str = str; 2384 err->help = help; 2385 break; 2386 case 1: 2387 err->first_idx = err->idx; 2388 err->idx = idx; 2389 err->first_str = err->str; 2390 err->str = str; 2391 err->first_help = err->help; 2392 err->help = help; 2393 break; 2394 default: 2395 pr_debug("Multiple errors dropping message: %s (%s)\n", 2396 err->str, err->help); 2397 free(err->str); 2398 err->str = str; 2399 free(err->help); 2400 err->help = help; 2401 break; 2402 } 2403 err->num_errors++; 2404 } 2405 2406 #define MAX_WIDTH 1000 2407 static int get_term_width(void) 2408 { 2409 struct winsize ws; 2410 2411 get_term_dimensions(&ws); 2412 return ws.ws_col > MAX_WIDTH ? MAX_WIDTH : ws.ws_col; 2413 } 2414 2415 static void __parse_events_error__print(int err_idx, const char *err_str, 2416 const char *err_help, const char *event) 2417 { 2418 const char *str = "invalid or unsupported event: "; 2419 char _buf[MAX_WIDTH]; 2420 char *buf = (char *) event; 2421 int idx = 0; 2422 if (err_str) { 2423 /* -2 for extra '' in the final fprintf */ 2424 int width = get_term_width() - 2; 2425 int len_event = strlen(event); 2426 int len_str, max_len, cut = 0; 2427 2428 /* 2429 * Maximum error index indent, we will cut 2430 * the event string if it's bigger. 2431 */ 2432 int max_err_idx = 13; 2433 2434 /* 2435 * Let's be specific with the message when 2436 * we have the precise error. 2437 */ 2438 str = "event syntax error: "; 2439 len_str = strlen(str); 2440 max_len = width - len_str; 2441 2442 buf = _buf; 2443 2444 /* We're cutting from the beginning. */ 2445 if (err_idx > max_err_idx) 2446 cut = err_idx - max_err_idx; 2447 2448 strncpy(buf, event + cut, max_len); 2449 2450 /* Mark cut parts with '..' on both sides. */ 2451 if (cut) 2452 buf[0] = buf[1] = '.'; 2453 2454 if ((len_event - cut) > max_len) { 2455 buf[max_len - 1] = buf[max_len - 2] = '.'; 2456 buf[max_len] = 0; 2457 } 2458 2459 idx = len_str + err_idx - cut; 2460 } 2461 2462 fprintf(stderr, "%s'%s'\n", str, buf); 2463 if (idx) { 2464 fprintf(stderr, "%*s\\___ %s\n", idx + 1, "", err_str); 2465 if (err_help) 2466 fprintf(stderr, "\n%s\n", err_help); 2467 } 2468 } 2469 2470 void parse_events_error__print(struct parse_events_error *err, 2471 const char *event) 2472 { 2473 if (!err->num_errors) 2474 return; 2475 2476 __parse_events_error__print(err->idx, err->str, err->help, event); 2477 2478 if (err->num_errors > 1) { 2479 fputs("\nInitial error:\n", stderr); 2480 __parse_events_error__print(err->first_idx, err->first_str, 2481 err->first_help, event); 2482 } 2483 } 2484 2485 #undef MAX_WIDTH 2486 2487 int parse_events_option(const struct option *opt, const char *str, 2488 int unset __maybe_unused) 2489 { 2490 struct evlist *evlist = *(struct evlist **)opt->value; 2491 struct parse_events_error err; 2492 int ret; 2493 2494 parse_events_error__init(&err); 2495 ret = parse_events(evlist, str, &err); 2496 2497 if (ret) { 2498 parse_events_error__print(&err, str); 2499 fprintf(stderr, "Run 'perf list' for a list of valid events\n"); 2500 } 2501 parse_events_error__exit(&err); 2502 2503 return ret; 2504 } 2505 2506 int parse_events_option_new_evlist(const struct option *opt, const char *str, int unset) 2507 { 2508 struct evlist **evlistp = opt->value; 2509 int ret; 2510 2511 if (*evlistp == NULL) { 2512 *evlistp = evlist__new(); 2513 2514 if (*evlistp == NULL) { 2515 fprintf(stderr, "Not enough memory to create evlist\n"); 2516 return -1; 2517 } 2518 } 2519 2520 ret = parse_events_option(opt, str, unset); 2521 if (ret) { 2522 evlist__delete(*evlistp); 2523 *evlistp = NULL; 2524 } 2525 2526 return ret; 2527 } 2528 2529 static int 2530 foreach_evsel_in_last_glob(struct evlist *evlist, 2531 int (*func)(struct evsel *evsel, 2532 const void *arg), 2533 const void *arg) 2534 { 2535 struct evsel *last = NULL; 2536 int err; 2537 2538 /* 2539 * Don't return when list_empty, give func a chance to report 2540 * error when it found last == NULL. 2541 * 2542 * So no need to WARN here, let *func do this. 2543 */ 2544 if (evlist->core.nr_entries > 0) 2545 last = evlist__last(evlist); 2546 2547 do { 2548 err = (*func)(last, arg); 2549 if (err) 2550 return -1; 2551 if (!last) 2552 return 0; 2553 2554 if (last->core.node.prev == &evlist->core.entries) 2555 return 0; 2556 last = list_entry(last->core.node.prev, struct evsel, core.node); 2557 } while (!last->cmdline_group_boundary); 2558 2559 return 0; 2560 } 2561 2562 static int set_filter(struct evsel *evsel, const void *arg) 2563 { 2564 const char *str = arg; 2565 bool found = false; 2566 int nr_addr_filters = 0; 2567 struct perf_pmu *pmu = NULL; 2568 2569 if (evsel == NULL) { 2570 fprintf(stderr, 2571 "--filter option should follow a -e tracepoint or HW tracer option\n"); 2572 return -1; 2573 } 2574 2575 if (evsel->core.attr.type == PERF_TYPE_TRACEPOINT) { 2576 if (evsel__append_tp_filter(evsel, str) < 0) { 2577 fprintf(stderr, 2578 "not enough memory to hold filter string\n"); 2579 return -1; 2580 } 2581 2582 return 0; 2583 } 2584 2585 while ((pmu = perf_pmu__scan(pmu)) != NULL) 2586 if (pmu->type == evsel->core.attr.type) { 2587 found = true; 2588 break; 2589 } 2590 2591 if (found) 2592 perf_pmu__scan_file(pmu, "nr_addr_filters", 2593 "%d", &nr_addr_filters); 2594 2595 if (!nr_addr_filters) { 2596 fprintf(stderr, 2597 "This CPU does not support address filtering\n"); 2598 return -1; 2599 } 2600 2601 if (evsel__append_addr_filter(evsel, str) < 0) { 2602 fprintf(stderr, 2603 "not enough memory to hold filter string\n"); 2604 return -1; 2605 } 2606 2607 return 0; 2608 } 2609 2610 int parse_filter(const struct option *opt, const char *str, 2611 int unset __maybe_unused) 2612 { 2613 struct evlist *evlist = *(struct evlist **)opt->value; 2614 2615 return foreach_evsel_in_last_glob(evlist, set_filter, 2616 (const void *)str); 2617 } 2618 2619 static int add_exclude_perf_filter(struct evsel *evsel, 2620 const void *arg __maybe_unused) 2621 { 2622 char new_filter[64]; 2623 2624 if (evsel == NULL || evsel->core.attr.type != PERF_TYPE_TRACEPOINT) { 2625 fprintf(stderr, 2626 "--exclude-perf option should follow a -e tracepoint option\n"); 2627 return -1; 2628 } 2629 2630 snprintf(new_filter, sizeof(new_filter), "common_pid != %d", getpid()); 2631 2632 if (evsel__append_tp_filter(evsel, new_filter) < 0) { 2633 fprintf(stderr, 2634 "not enough memory to hold filter string\n"); 2635 return -1; 2636 } 2637 2638 return 0; 2639 } 2640 2641 int exclude_perf(const struct option *opt, 2642 const char *arg __maybe_unused, 2643 int unset __maybe_unused) 2644 { 2645 struct evlist *evlist = *(struct evlist **)opt->value; 2646 2647 return foreach_evsel_in_last_glob(evlist, add_exclude_perf_filter, 2648 NULL); 2649 } 2650 2651 static const char * const event_type_descriptors[] = { 2652 "Hardware event", 2653 "Software event", 2654 "Tracepoint event", 2655 "Hardware cache event", 2656 "Raw hardware event descriptor", 2657 "Hardware breakpoint", 2658 }; 2659 2660 static int cmp_string(const void *a, const void *b) 2661 { 2662 const char * const *as = a; 2663 const char * const *bs = b; 2664 2665 return strcmp(*as, *bs); 2666 } 2667 2668 /* 2669 * Print the events from <debugfs_mount_point>/tracing/events 2670 */ 2671 2672 void print_tracepoint_events(const char *subsys_glob, const char *event_glob, 2673 bool name_only) 2674 { 2675 DIR *sys_dir, *evt_dir; 2676 struct dirent *sys_dirent, *evt_dirent; 2677 char evt_path[MAXPATHLEN]; 2678 char *dir_path; 2679 char **evt_list = NULL; 2680 unsigned int evt_i = 0, evt_num = 0; 2681 bool evt_num_known = false; 2682 2683 restart: 2684 sys_dir = tracing_events__opendir(); 2685 if (!sys_dir) 2686 return; 2687 2688 if (evt_num_known) { 2689 evt_list = zalloc(sizeof(char *) * evt_num); 2690 if (!evt_list) 2691 goto out_close_sys_dir; 2692 } 2693 2694 for_each_subsystem(sys_dir, sys_dirent) { 2695 if (subsys_glob != NULL && 2696 !strglobmatch(sys_dirent->d_name, subsys_glob)) 2697 continue; 2698 2699 dir_path = get_events_file(sys_dirent->d_name); 2700 if (!dir_path) 2701 continue; 2702 evt_dir = opendir(dir_path); 2703 if (!evt_dir) 2704 goto next; 2705 2706 for_each_event(dir_path, evt_dir, evt_dirent) { 2707 if (event_glob != NULL && 2708 !strglobmatch(evt_dirent->d_name, event_glob)) 2709 continue; 2710 2711 if (!evt_num_known) { 2712 evt_num++; 2713 continue; 2714 } 2715 2716 snprintf(evt_path, MAXPATHLEN, "%s:%s", 2717 sys_dirent->d_name, evt_dirent->d_name); 2718 2719 evt_list[evt_i] = strdup(evt_path); 2720 if (evt_list[evt_i] == NULL) { 2721 put_events_file(dir_path); 2722 goto out_close_evt_dir; 2723 } 2724 evt_i++; 2725 } 2726 closedir(evt_dir); 2727 next: 2728 put_events_file(dir_path); 2729 } 2730 closedir(sys_dir); 2731 2732 if (!evt_num_known) { 2733 evt_num_known = true; 2734 goto restart; 2735 } 2736 qsort(evt_list, evt_num, sizeof(char *), cmp_string); 2737 evt_i = 0; 2738 while (evt_i < evt_num) { 2739 if (name_only) { 2740 printf("%s ", evt_list[evt_i++]); 2741 continue; 2742 } 2743 printf(" %-50s [%s]\n", evt_list[evt_i++], 2744 event_type_descriptors[PERF_TYPE_TRACEPOINT]); 2745 } 2746 if (evt_num && pager_in_use()) 2747 printf("\n"); 2748 2749 out_free: 2750 evt_num = evt_i; 2751 for (evt_i = 0; evt_i < evt_num; evt_i++) 2752 zfree(&evt_list[evt_i]); 2753 zfree(&evt_list); 2754 return; 2755 2756 out_close_evt_dir: 2757 closedir(evt_dir); 2758 out_close_sys_dir: 2759 closedir(sys_dir); 2760 2761 printf("FATAL: not enough memory to print %s\n", 2762 event_type_descriptors[PERF_TYPE_TRACEPOINT]); 2763 if (evt_list) 2764 goto out_free; 2765 } 2766 2767 /* 2768 * Check whether event is in <debugfs_mount_point>/tracing/events 2769 */ 2770 2771 int is_valid_tracepoint(const char *event_string) 2772 { 2773 DIR *sys_dir, *evt_dir; 2774 struct dirent *sys_dirent, *evt_dirent; 2775 char evt_path[MAXPATHLEN]; 2776 char *dir_path; 2777 2778 sys_dir = tracing_events__opendir(); 2779 if (!sys_dir) 2780 return 0; 2781 2782 for_each_subsystem(sys_dir, sys_dirent) { 2783 dir_path = get_events_file(sys_dirent->d_name); 2784 if (!dir_path) 2785 continue; 2786 evt_dir = opendir(dir_path); 2787 if (!evt_dir) 2788 goto next; 2789 2790 for_each_event(dir_path, evt_dir, evt_dirent) { 2791 snprintf(evt_path, MAXPATHLEN, "%s:%s", 2792 sys_dirent->d_name, evt_dirent->d_name); 2793 if (!strcmp(evt_path, event_string)) { 2794 closedir(evt_dir); 2795 closedir(sys_dir); 2796 return 1; 2797 } 2798 } 2799 closedir(evt_dir); 2800 next: 2801 put_events_file(dir_path); 2802 } 2803 closedir(sys_dir); 2804 return 0; 2805 } 2806 2807 static bool is_event_supported(u8 type, u64 config) 2808 { 2809 bool ret = true; 2810 int open_return; 2811 struct evsel *evsel; 2812 struct perf_event_attr attr = { 2813 .type = type, 2814 .config = config, 2815 .disabled = 1, 2816 }; 2817 struct perf_thread_map *tmap = thread_map__new_by_tid(0); 2818 2819 if (tmap == NULL) 2820 return false; 2821 2822 evsel = evsel__new(&attr); 2823 if (evsel) { 2824 open_return = evsel__open(evsel, NULL, tmap); 2825 ret = open_return >= 0; 2826 2827 if (open_return == -EACCES) { 2828 /* 2829 * This happens if the paranoid value 2830 * /proc/sys/kernel/perf_event_paranoid is set to 2 2831 * Re-run with exclude_kernel set; we don't do that 2832 * by default as some ARM machines do not support it. 2833 * 2834 */ 2835 evsel->core.attr.exclude_kernel = 1; 2836 ret = evsel__open(evsel, NULL, tmap) >= 0; 2837 } 2838 evsel__delete(evsel); 2839 } 2840 2841 perf_thread_map__put(tmap); 2842 return ret; 2843 } 2844 2845 void print_sdt_events(const char *subsys_glob, const char *event_glob, 2846 bool name_only) 2847 { 2848 struct probe_cache *pcache; 2849 struct probe_cache_entry *ent; 2850 struct strlist *bidlist, *sdtlist; 2851 struct strlist_config cfg = {.dont_dupstr = true}; 2852 struct str_node *nd, *nd2; 2853 char *buf, *path, *ptr = NULL; 2854 bool show_detail = false; 2855 int ret; 2856 2857 sdtlist = strlist__new(NULL, &cfg); 2858 if (!sdtlist) { 2859 pr_debug("Failed to allocate new strlist for SDT\n"); 2860 return; 2861 } 2862 bidlist = build_id_cache__list_all(true); 2863 if (!bidlist) { 2864 pr_debug("Failed to get buildids: %d\n", errno); 2865 return; 2866 } 2867 strlist__for_each_entry(nd, bidlist) { 2868 pcache = probe_cache__new(nd->s, NULL); 2869 if (!pcache) 2870 continue; 2871 list_for_each_entry(ent, &pcache->entries, node) { 2872 if (!ent->sdt) 2873 continue; 2874 if (subsys_glob && 2875 !strglobmatch(ent->pev.group, subsys_glob)) 2876 continue; 2877 if (event_glob && 2878 !strglobmatch(ent->pev.event, event_glob)) 2879 continue; 2880 ret = asprintf(&buf, "%s:%s@%s", ent->pev.group, 2881 ent->pev.event, nd->s); 2882 if (ret > 0) 2883 strlist__add(sdtlist, buf); 2884 } 2885 probe_cache__delete(pcache); 2886 } 2887 strlist__delete(bidlist); 2888 2889 strlist__for_each_entry(nd, sdtlist) { 2890 buf = strchr(nd->s, '@'); 2891 if (buf) 2892 *(buf++) = '\0'; 2893 if (name_only) { 2894 printf("%s ", nd->s); 2895 continue; 2896 } 2897 nd2 = strlist__next(nd); 2898 if (nd2) { 2899 ptr = strchr(nd2->s, '@'); 2900 if (ptr) 2901 *ptr = '\0'; 2902 if (strcmp(nd->s, nd2->s) == 0) 2903 show_detail = true; 2904 } 2905 if (show_detail) { 2906 path = build_id_cache__origname(buf); 2907 ret = asprintf(&buf, "%s@%s(%.12s)", nd->s, path, buf); 2908 if (ret > 0) { 2909 printf(" %-50s [%s]\n", buf, "SDT event"); 2910 free(buf); 2911 } 2912 free(path); 2913 } else 2914 printf(" %-50s [%s]\n", nd->s, "SDT event"); 2915 if (nd2) { 2916 if (strcmp(nd->s, nd2->s) != 0) 2917 show_detail = false; 2918 if (ptr) 2919 *ptr = '@'; 2920 } 2921 } 2922 strlist__delete(sdtlist); 2923 } 2924 2925 int print_hwcache_events(const char *event_glob, bool name_only) 2926 { 2927 unsigned int type, op, i, evt_i = 0, evt_num = 0, npmus = 0; 2928 char name[64], new_name[128]; 2929 char **evt_list = NULL, **evt_pmus = NULL; 2930 bool evt_num_known = false; 2931 struct perf_pmu *pmu = NULL; 2932 2933 if (perf_pmu__has_hybrid()) { 2934 npmus = perf_pmu__hybrid_pmu_num(); 2935 evt_pmus = zalloc(sizeof(char *) * npmus); 2936 if (!evt_pmus) 2937 goto out_enomem; 2938 } 2939 2940 restart: 2941 if (evt_num_known) { 2942 evt_list = zalloc(sizeof(char *) * evt_num); 2943 if (!evt_list) 2944 goto out_enomem; 2945 } 2946 2947 for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) { 2948 for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) { 2949 /* skip invalid cache type */ 2950 if (!evsel__is_cache_op_valid(type, op)) 2951 continue; 2952 2953 for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) { 2954 unsigned int hybrid_supported = 0, j; 2955 bool supported; 2956 2957 __evsel__hw_cache_type_op_res_name(type, op, i, name, sizeof(name)); 2958 if (event_glob != NULL && !strglobmatch(name, event_glob)) 2959 continue; 2960 2961 if (!perf_pmu__has_hybrid()) { 2962 if (!is_event_supported(PERF_TYPE_HW_CACHE, 2963 type | (op << 8) | (i << 16))) { 2964 continue; 2965 } 2966 } else { 2967 perf_pmu__for_each_hybrid_pmu(pmu) { 2968 if (!evt_num_known) { 2969 evt_num++; 2970 continue; 2971 } 2972 2973 supported = is_event_supported( 2974 PERF_TYPE_HW_CACHE, 2975 type | (op << 8) | (i << 16) | 2976 ((__u64)pmu->type << PERF_PMU_TYPE_SHIFT)); 2977 if (supported) { 2978 snprintf(new_name, sizeof(new_name), "%s/%s/", 2979 pmu->name, name); 2980 evt_pmus[hybrid_supported] = strdup(new_name); 2981 hybrid_supported++; 2982 } 2983 } 2984 2985 if (hybrid_supported == 0) 2986 continue; 2987 } 2988 2989 if (!evt_num_known) { 2990 evt_num++; 2991 continue; 2992 } 2993 2994 if ((hybrid_supported == 0) || 2995 (hybrid_supported == npmus)) { 2996 evt_list[evt_i] = strdup(name); 2997 if (npmus > 0) { 2998 for (j = 0; j < npmus; j++) 2999 zfree(&evt_pmus[j]); 3000 } 3001 } else { 3002 for (j = 0; j < hybrid_supported; j++) { 3003 evt_list[evt_i++] = evt_pmus[j]; 3004 evt_pmus[j] = NULL; 3005 } 3006 continue; 3007 } 3008 3009 if (evt_list[evt_i] == NULL) 3010 goto out_enomem; 3011 evt_i++; 3012 } 3013 } 3014 } 3015 3016 if (!evt_num_known) { 3017 evt_num_known = true; 3018 goto restart; 3019 } 3020 3021 for (evt_i = 0; evt_i < evt_num; evt_i++) { 3022 if (!evt_list[evt_i]) 3023 break; 3024 } 3025 3026 evt_num = evt_i; 3027 qsort(evt_list, evt_num, sizeof(char *), cmp_string); 3028 evt_i = 0; 3029 while (evt_i < evt_num) { 3030 if (name_only) { 3031 printf("%s ", evt_list[evt_i++]); 3032 continue; 3033 } 3034 printf(" %-50s [%s]\n", evt_list[evt_i++], 3035 event_type_descriptors[PERF_TYPE_HW_CACHE]); 3036 } 3037 if (evt_num && pager_in_use()) 3038 printf("\n"); 3039 3040 out_free: 3041 evt_num = evt_i; 3042 for (evt_i = 0; evt_i < evt_num; evt_i++) 3043 zfree(&evt_list[evt_i]); 3044 zfree(&evt_list); 3045 3046 for (evt_i = 0; evt_i < npmus; evt_i++) 3047 zfree(&evt_pmus[evt_i]); 3048 zfree(&evt_pmus); 3049 return evt_num; 3050 3051 out_enomem: 3052 printf("FATAL: not enough memory to print %s\n", event_type_descriptors[PERF_TYPE_HW_CACHE]); 3053 if (evt_list) 3054 goto out_free; 3055 return evt_num; 3056 } 3057 3058 static void print_tool_event(const char *name, const char *event_glob, 3059 bool name_only) 3060 { 3061 if (event_glob && !strglobmatch(name, event_glob)) 3062 return; 3063 if (name_only) 3064 printf("%s ", name); 3065 else 3066 printf(" %-50s [%s]\n", name, "Tool event"); 3067 3068 } 3069 3070 void print_tool_events(const char *event_glob, bool name_only) 3071 { 3072 print_tool_event("duration_time", event_glob, name_only); 3073 if (pager_in_use()) 3074 printf("\n"); 3075 } 3076 3077 void print_symbol_events(const char *event_glob, unsigned type, 3078 struct event_symbol *syms, unsigned max, 3079 bool name_only) 3080 { 3081 unsigned int i, evt_i = 0, evt_num = 0; 3082 char name[MAX_NAME_LEN]; 3083 char **evt_list = NULL; 3084 bool evt_num_known = false; 3085 3086 restart: 3087 if (evt_num_known) { 3088 evt_list = zalloc(sizeof(char *) * evt_num); 3089 if (!evt_list) 3090 goto out_enomem; 3091 syms -= max; 3092 } 3093 3094 for (i = 0; i < max; i++, syms++) { 3095 /* 3096 * New attr.config still not supported here, the latest 3097 * example was PERF_COUNT_SW_CGROUP_SWITCHES 3098 */ 3099 if (syms->symbol == NULL) 3100 continue; 3101 3102 if (event_glob != NULL && !(strglobmatch(syms->symbol, event_glob) || 3103 (syms->alias && strglobmatch(syms->alias, event_glob)))) 3104 continue; 3105 3106 if (!is_event_supported(type, i)) 3107 continue; 3108 3109 if (!evt_num_known) { 3110 evt_num++; 3111 continue; 3112 } 3113 3114 if (!name_only && strlen(syms->alias)) 3115 snprintf(name, MAX_NAME_LEN, "%s OR %s", syms->symbol, syms->alias); 3116 else 3117 strlcpy(name, syms->symbol, MAX_NAME_LEN); 3118 3119 evt_list[evt_i] = strdup(name); 3120 if (evt_list[evt_i] == NULL) 3121 goto out_enomem; 3122 evt_i++; 3123 } 3124 3125 if (!evt_num_known) { 3126 evt_num_known = true; 3127 goto restart; 3128 } 3129 qsort(evt_list, evt_num, sizeof(char *), cmp_string); 3130 evt_i = 0; 3131 while (evt_i < evt_num) { 3132 if (name_only) { 3133 printf("%s ", evt_list[evt_i++]); 3134 continue; 3135 } 3136 printf(" %-50s [%s]\n", evt_list[evt_i++], event_type_descriptors[type]); 3137 } 3138 if (evt_num && pager_in_use()) 3139 printf("\n"); 3140 3141 out_free: 3142 evt_num = evt_i; 3143 for (evt_i = 0; evt_i < evt_num; evt_i++) 3144 zfree(&evt_list[evt_i]); 3145 zfree(&evt_list); 3146 return; 3147 3148 out_enomem: 3149 printf("FATAL: not enough memory to print %s\n", event_type_descriptors[type]); 3150 if (evt_list) 3151 goto out_free; 3152 } 3153 3154 /* 3155 * Print the help text for the event symbols: 3156 */ 3157 void print_events(const char *event_glob, bool name_only, bool quiet_flag, 3158 bool long_desc, bool details_flag, bool deprecated, 3159 const char *pmu_name) 3160 { 3161 print_symbol_events(event_glob, PERF_TYPE_HARDWARE, 3162 event_symbols_hw, PERF_COUNT_HW_MAX, name_only); 3163 3164 print_symbol_events(event_glob, PERF_TYPE_SOFTWARE, 3165 event_symbols_sw, PERF_COUNT_SW_MAX, name_only); 3166 print_tool_events(event_glob, name_only); 3167 3168 print_hwcache_events(event_glob, name_only); 3169 3170 print_pmu_events(event_glob, name_only, quiet_flag, long_desc, 3171 details_flag, deprecated, pmu_name); 3172 3173 if (event_glob != NULL) 3174 return; 3175 3176 if (!name_only) { 3177 printf(" %-50s [%s]\n", 3178 "rNNN", 3179 event_type_descriptors[PERF_TYPE_RAW]); 3180 printf(" %-50s [%s]\n", 3181 "cpu/t1=v1[,t2=v2,t3 ...]/modifier", 3182 event_type_descriptors[PERF_TYPE_RAW]); 3183 if (pager_in_use()) 3184 printf(" (see 'man perf-list' on how to encode it)\n\n"); 3185 3186 printf(" %-50s [%s]\n", 3187 "mem:<addr>[/len][:access]", 3188 event_type_descriptors[PERF_TYPE_BREAKPOINT]); 3189 if (pager_in_use()) 3190 printf("\n"); 3191 } 3192 3193 print_tracepoint_events(NULL, NULL, name_only); 3194 3195 print_sdt_events(NULL, NULL, name_only); 3196 3197 metricgroup__print(true, true, NULL, name_only, details_flag, 3198 pmu_name); 3199 3200 print_libpfm_events(name_only, long_desc); 3201 } 3202 3203 int parse_events__is_hardcoded_term(struct parse_events_term *term) 3204 { 3205 return term->type_term != PARSE_EVENTS__TERM_TYPE_USER; 3206 } 3207 3208 static int new_term(struct parse_events_term **_term, 3209 struct parse_events_term *temp, 3210 char *str, u64 num) 3211 { 3212 struct parse_events_term *term; 3213 3214 term = malloc(sizeof(*term)); 3215 if (!term) 3216 return -ENOMEM; 3217 3218 *term = *temp; 3219 INIT_LIST_HEAD(&term->list); 3220 term->weak = false; 3221 3222 switch (term->type_val) { 3223 case PARSE_EVENTS__TERM_TYPE_NUM: 3224 term->val.num = num; 3225 break; 3226 case PARSE_EVENTS__TERM_TYPE_STR: 3227 term->val.str = str; 3228 break; 3229 default: 3230 free(term); 3231 return -EINVAL; 3232 } 3233 3234 *_term = term; 3235 return 0; 3236 } 3237 3238 int parse_events_term__num(struct parse_events_term **term, 3239 int type_term, char *config, u64 num, 3240 bool no_value, 3241 void *loc_term_, void *loc_val_) 3242 { 3243 YYLTYPE *loc_term = loc_term_; 3244 YYLTYPE *loc_val = loc_val_; 3245 3246 struct parse_events_term temp = { 3247 .type_val = PARSE_EVENTS__TERM_TYPE_NUM, 3248 .type_term = type_term, 3249 .config = config ? : strdup(config_term_names[type_term]), 3250 .no_value = no_value, 3251 .err_term = loc_term ? loc_term->first_column : 0, 3252 .err_val = loc_val ? loc_val->first_column : 0, 3253 }; 3254 3255 return new_term(term, &temp, NULL, num); 3256 } 3257 3258 int parse_events_term__str(struct parse_events_term **term, 3259 int type_term, char *config, char *str, 3260 void *loc_term_, void *loc_val_) 3261 { 3262 YYLTYPE *loc_term = loc_term_; 3263 YYLTYPE *loc_val = loc_val_; 3264 3265 struct parse_events_term temp = { 3266 .type_val = PARSE_EVENTS__TERM_TYPE_STR, 3267 .type_term = type_term, 3268 .config = config, 3269 .err_term = loc_term ? loc_term->first_column : 0, 3270 .err_val = loc_val ? loc_val->first_column : 0, 3271 }; 3272 3273 return new_term(term, &temp, str, 0); 3274 } 3275 3276 int parse_events_term__sym_hw(struct parse_events_term **term, 3277 char *config, unsigned idx) 3278 { 3279 struct event_symbol *sym; 3280 char *str; 3281 struct parse_events_term temp = { 3282 .type_val = PARSE_EVENTS__TERM_TYPE_STR, 3283 .type_term = PARSE_EVENTS__TERM_TYPE_USER, 3284 .config = config, 3285 }; 3286 3287 if (!temp.config) { 3288 temp.config = strdup("event"); 3289 if (!temp.config) 3290 return -ENOMEM; 3291 } 3292 BUG_ON(idx >= PERF_COUNT_HW_MAX); 3293 sym = &event_symbols_hw[idx]; 3294 3295 str = strdup(sym->symbol); 3296 if (!str) 3297 return -ENOMEM; 3298 return new_term(term, &temp, str, 0); 3299 } 3300 3301 int parse_events_term__clone(struct parse_events_term **new, 3302 struct parse_events_term *term) 3303 { 3304 char *str; 3305 struct parse_events_term temp = { 3306 .type_val = term->type_val, 3307 .type_term = term->type_term, 3308 .config = NULL, 3309 .err_term = term->err_term, 3310 .err_val = term->err_val, 3311 }; 3312 3313 if (term->config) { 3314 temp.config = strdup(term->config); 3315 if (!temp.config) 3316 return -ENOMEM; 3317 } 3318 if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) 3319 return new_term(new, &temp, NULL, term->val.num); 3320 3321 str = strdup(term->val.str); 3322 if (!str) 3323 return -ENOMEM; 3324 return new_term(new, &temp, str, 0); 3325 } 3326 3327 void parse_events_term__delete(struct parse_events_term *term) 3328 { 3329 if (term->array.nr_ranges) 3330 zfree(&term->array.ranges); 3331 3332 if (term->type_val != PARSE_EVENTS__TERM_TYPE_NUM) 3333 zfree(&term->val.str); 3334 3335 zfree(&term->config); 3336 free(term); 3337 } 3338 3339 int parse_events_copy_term_list(struct list_head *old, 3340 struct list_head **new) 3341 { 3342 struct parse_events_term *term, *n; 3343 int ret; 3344 3345 if (!old) { 3346 *new = NULL; 3347 return 0; 3348 } 3349 3350 *new = malloc(sizeof(struct list_head)); 3351 if (!*new) 3352 return -ENOMEM; 3353 INIT_LIST_HEAD(*new); 3354 3355 list_for_each_entry (term, old, list) { 3356 ret = parse_events_term__clone(&n, term); 3357 if (ret) 3358 return ret; 3359 list_add_tail(&n->list, *new); 3360 } 3361 return 0; 3362 } 3363 3364 void parse_events_terms__purge(struct list_head *terms) 3365 { 3366 struct parse_events_term *term, *h; 3367 3368 list_for_each_entry_safe(term, h, terms, list) { 3369 list_del_init(&term->list); 3370 parse_events_term__delete(term); 3371 } 3372 } 3373 3374 void parse_events_terms__delete(struct list_head *terms) 3375 { 3376 if (!terms) 3377 return; 3378 parse_events_terms__purge(terms); 3379 free(terms); 3380 } 3381 3382 void parse_events__clear_array(struct parse_events_array *a) 3383 { 3384 zfree(&a->ranges); 3385 } 3386 3387 void parse_events_evlist_error(struct parse_events_state *parse_state, 3388 int idx, const char *str) 3389 { 3390 if (!parse_state->error) 3391 return; 3392 3393 parse_events_error__handle(parse_state->error, idx, strdup(str), NULL); 3394 } 3395 3396 static void config_terms_list(char *buf, size_t buf_sz) 3397 { 3398 int i; 3399 bool first = true; 3400 3401 buf[0] = '\0'; 3402 for (i = 0; i < __PARSE_EVENTS__TERM_TYPE_NR; i++) { 3403 const char *name = config_term_names[i]; 3404 3405 if (!config_term_avail(i, NULL)) 3406 continue; 3407 if (!name) 3408 continue; 3409 if (name[0] == '<') 3410 continue; 3411 3412 if (strlen(buf) + strlen(name) + 2 >= buf_sz) 3413 return; 3414 3415 if (!first) 3416 strcat(buf, ","); 3417 else 3418 first = false; 3419 strcat(buf, name); 3420 } 3421 } 3422 3423 /* 3424 * Return string contains valid config terms of an event. 3425 * @additional_terms: For terms such as PMU sysfs terms. 3426 */ 3427 char *parse_events_formats_error_string(char *additional_terms) 3428 { 3429 char *str; 3430 /* "no-overwrite" is the longest name */ 3431 char static_terms[__PARSE_EVENTS__TERM_TYPE_NR * 3432 (sizeof("no-overwrite") - 1)]; 3433 3434 config_terms_list(static_terms, sizeof(static_terms)); 3435 /* valid terms */ 3436 if (additional_terms) { 3437 if (asprintf(&str, "valid terms: %s,%s", 3438 additional_terms, static_terms) < 0) 3439 goto fail; 3440 } else { 3441 if (asprintf(&str, "valid terms: %s", static_terms) < 0) 3442 goto fail; 3443 } 3444 return str; 3445 3446 fail: 3447 return NULL; 3448 } 3449 3450 struct evsel *parse_events__add_event_hybrid(struct list_head *list, int *idx, 3451 struct perf_event_attr *attr, 3452 const char *name, 3453 const char *metric_id, 3454 struct perf_pmu *pmu, 3455 struct list_head *config_terms) 3456 { 3457 return __add_event(list, idx, attr, /*init_attr=*/true, name, metric_id, 3458 pmu, config_terms, /*auto_merge_stats=*/false, 3459 /*cpu_list=*/NULL); 3460 } 3461