1// SPDX-License-Identifier: GPL-2.0 2#include <linux/hw_breakpoint.h> 3#include <linux/err.h> 4#include <linux/zalloc.h> 5#include <dirent.h> 6#include <errno.h> 7#include <sys/ioctl.h> 8#include <sys/types.h> 9#include <sys/stat.h> 10#include <fcntl.h> 11#include <sys/param.h> 12#include "term.h" 13#include "build-id.h" 14#include "evlist.h" 15#include "evsel.h" 16#include <subcmd/pager.h> 17#include <subcmd/parse-options.h> 18#include "parse-events.h" 19#include <subcmd/exec-cmd.h> 20#include "string2.h" 21#include "strlist.h" 22#include "symbol.h" 23#include "header.h" 24#include "bpf-loader.h" 25#include "debug.h" 26#include <api/fs/tracing_path.h> 27#include <perf/cpumap.h> 28#include "parse-events-bison.h" 29#define YY_EXTRA_TYPE void* 30#include "parse-events-flex.h" 31#include "pmu.h" 32#include "thread_map.h" 33#include "probe-file.h" 34#include "asm/bug.h" 35#include "util/parse-branch-options.h" 36#include "metricgroup.h" 37#include "util/evsel_config.h" 38#include "util/event.h" 39#include "util/pfm.h" 40#include "perf.h" 41 42#define MAX_NAME_LEN 100 43 44#ifdef PARSER_DEBUG 45extern int parse_events_debug; 46#endif 47int parse_events_parse(void *parse_state, void *scanner); 48static int get_config_terms(struct list_head *head_config, 49 struct list_head *head_terms __maybe_unused); 50 51static struct perf_pmu_event_symbol *perf_pmu_events_list; 52/* 53 * The variable indicates the number of supported pmu event symbols. 54 * 0 means not initialized and ready to init 55 * -1 means failed to init, don't try anymore 56 * >0 is the number of supported pmu event symbols 57 */ 58static int perf_pmu_events_list_num; 59 60struct event_symbol event_symbols_hw[PERF_COUNT_HW_MAX] = { 61 [PERF_COUNT_HW_CPU_CYCLES] = { 62 .symbol = "cpu-cycles", 63 .alias = "cycles", 64 }, 65 [PERF_COUNT_HW_INSTRUCTIONS] = { 66 .symbol = "instructions", 67 .alias = "", 68 }, 69 [PERF_COUNT_HW_CACHE_REFERENCES] = { 70 .symbol = "cache-references", 71 .alias = "", 72 }, 73 [PERF_COUNT_HW_CACHE_MISSES] = { 74 .symbol = "cache-misses", 75 .alias = "", 76 }, 77 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = { 78 .symbol = "branch-instructions", 79 .alias = "branches", 80 }, 81 [PERF_COUNT_HW_BRANCH_MISSES] = { 82 .symbol = "branch-misses", 83 .alias = "", 84 }, 85 [PERF_COUNT_HW_BUS_CYCLES] = { 86 .symbol = "bus-cycles", 87 .alias = "", 88 }, 89 [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = { 90 .symbol = "stalled-cycles-frontend", 91 .alias = "idle-cycles-frontend", 92 }, 93 [PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = { 94 .symbol = "stalled-cycles-backend", 95 .alias = "idle-cycles-backend", 96 }, 97 [PERF_COUNT_HW_REF_CPU_CYCLES] = { 98 .symbol = "ref-cycles", 99 .alias = "", 100 }, 101}; 102 103struct event_symbol event_symbols_sw[PERF_COUNT_SW_MAX] = { 104 [PERF_COUNT_SW_CPU_CLOCK] = { 105 .symbol = "cpu-clock", 106 .alias = "", 107 }, 108 [PERF_COUNT_SW_TASK_CLOCK] = { 109 .symbol = "task-clock", 110 .alias = "", 111 }, 112 [PERF_COUNT_SW_PAGE_FAULTS] = { 113 .symbol = "page-faults", 114 .alias = "faults", 115 }, 116 [PERF_COUNT_SW_CONTEXT_SWITCHES] = { 117 .symbol = "context-switches", 118 .alias = "cs", 119 }, 120 [PERF_COUNT_SW_CPU_MIGRATIONS] = { 121 .symbol = "cpu-migrations", 122 .alias = "migrations", 123 }, 124 [PERF_COUNT_SW_PAGE_FAULTS_MIN] = { 125 .symbol = "minor-faults", 126 .alias = "", 127 }, 128 [PERF_COUNT_SW_PAGE_FAULTS_MAJ] = { 129 .symbol = "major-faults", 130 .alias = "", 131 }, 132 [PERF_COUNT_SW_ALIGNMENT_FAULTS] = { 133 .symbol = "alignment-faults", 134 .alias = "", 135 }, 136 [PERF_COUNT_SW_EMULATION_FAULTS] = { 137 .symbol = "emulation-faults", 138 .alias = "", 139 }, 140 [PERF_COUNT_SW_DUMMY] = { 141 .symbol = "dummy", 142 .alias = "", 143 }, 144 [PERF_COUNT_SW_BPF_OUTPUT] = { 145 .symbol = "bpf-output", 146 .alias = "", 147 }, 148}; 149 150#define __PERF_EVENT_FIELD(config, name) \ 151 ((config & PERF_EVENT_##name##_MASK) >> PERF_EVENT_##name##_SHIFT) 152 153#define PERF_EVENT_RAW(config) __PERF_EVENT_FIELD(config, RAW) 154#define PERF_EVENT_CONFIG(config) __PERF_EVENT_FIELD(config, CONFIG) 155#define PERF_EVENT_TYPE(config) __PERF_EVENT_FIELD(config, TYPE) 156#define PERF_EVENT_ID(config) __PERF_EVENT_FIELD(config, EVENT) 157 158#define for_each_subsystem(sys_dir, sys_dirent) \ 159 while ((sys_dirent = readdir(sys_dir)) != NULL) \ 160 if (sys_dirent->d_type == DT_DIR && \ 161 (strcmp(sys_dirent->d_name, ".")) && \ 162 (strcmp(sys_dirent->d_name, ".."))) 163 164static int tp_event_has_id(const char *dir_path, struct dirent *evt_dir) 165{ 166 char evt_path[MAXPATHLEN]; 167 int fd; 168 169 snprintf(evt_path, MAXPATHLEN, "%s/%s/id", dir_path, evt_dir->d_name); 170 fd = open(evt_path, O_RDONLY); 171 if (fd < 0) 172 return -EINVAL; 173 close(fd); 174 175 return 0; 176} 177 178#define for_each_event(dir_path, evt_dir, evt_dirent) \ 179 while ((evt_dirent = readdir(evt_dir)) != NULL) \ 180 if (evt_dirent->d_type == DT_DIR && \ 181 (strcmp(evt_dirent->d_name, ".")) && \ 182 (strcmp(evt_dirent->d_name, "..")) && \ 183 (!tp_event_has_id(dir_path, evt_dirent))) 184 185#define MAX_EVENT_LENGTH 512 186 187void parse_events__handle_error(struct parse_events_error *err, int idx, 188 char *str, char *help) 189{ 190 if (WARN(!str, "WARNING: failed to provide error string\n")) { 191 free(help); 192 return; 193 } 194 switch (err->num_errors) { 195 case 0: 196 err->idx = idx; 197 err->str = str; 198 err->help = help; 199 break; 200 case 1: 201 err->first_idx = err->idx; 202 err->idx = idx; 203 err->first_str = err->str; 204 err->str = str; 205 err->first_help = err->help; 206 err->help = help; 207 break; 208 default: 209 pr_debug("Multiple errors dropping message: %s (%s)\n", 210 err->str, err->help); 211 free(err->str); 212 err->str = str; 213 free(err->help); 214 err->help = help; 215 break; 216 } 217 err->num_errors++; 218} 219 220struct tracepoint_path *tracepoint_id_to_path(u64 config) 221{ 222 struct tracepoint_path *path = NULL; 223 DIR *sys_dir, *evt_dir; 224 struct dirent *sys_dirent, *evt_dirent; 225 char id_buf[24]; 226 int fd; 227 u64 id; 228 char evt_path[MAXPATHLEN]; 229 char *dir_path; 230 231 sys_dir = tracing_events__opendir(); 232 if (!sys_dir) 233 return NULL; 234 235 for_each_subsystem(sys_dir, sys_dirent) { 236 dir_path = get_events_file(sys_dirent->d_name); 237 if (!dir_path) 238 continue; 239 evt_dir = opendir(dir_path); 240 if (!evt_dir) 241 goto next; 242 243 for_each_event(dir_path, evt_dir, evt_dirent) { 244 245 scnprintf(evt_path, MAXPATHLEN, "%s/%s/id", dir_path, 246 evt_dirent->d_name); 247 fd = open(evt_path, O_RDONLY); 248 if (fd < 0) 249 continue; 250 if (read(fd, id_buf, sizeof(id_buf)) < 0) { 251 close(fd); 252 continue; 253 } 254 close(fd); 255 id = atoll(id_buf); 256 if (id == config) { 257 put_events_file(dir_path); 258 closedir(evt_dir); 259 closedir(sys_dir); 260 path = zalloc(sizeof(*path)); 261 if (!path) 262 return NULL; 263 if (asprintf(&path->system, "%.*s", MAX_EVENT_LENGTH, sys_dirent->d_name) < 0) { 264 free(path); 265 return NULL; 266 } 267 if (asprintf(&path->name, "%.*s", MAX_EVENT_LENGTH, evt_dirent->d_name) < 0) { 268 zfree(&path->system); 269 free(path); 270 return NULL; 271 } 272 return path; 273 } 274 } 275 closedir(evt_dir); 276next: 277 put_events_file(dir_path); 278 } 279 280 closedir(sys_dir); 281 return NULL; 282} 283 284struct tracepoint_path *tracepoint_name_to_path(const char *name) 285{ 286 struct tracepoint_path *path = zalloc(sizeof(*path)); 287 char *str = strchr(name, ':'); 288 289 if (path == NULL || str == NULL) { 290 free(path); 291 return NULL; 292 } 293 294 path->system = strndup(name, str - name); 295 path->name = strdup(str+1); 296 297 if (path->system == NULL || path->name == NULL) { 298 zfree(&path->system); 299 zfree(&path->name); 300 zfree(&path); 301 } 302 303 return path; 304} 305 306const char *event_type(int type) 307{ 308 switch (type) { 309 case PERF_TYPE_HARDWARE: 310 return "hardware"; 311 312 case PERF_TYPE_SOFTWARE: 313 return "software"; 314 315 case PERF_TYPE_TRACEPOINT: 316 return "tracepoint"; 317 318 case PERF_TYPE_HW_CACHE: 319 return "hardware-cache"; 320 321 default: 322 break; 323 } 324 325 return "unknown"; 326} 327 328static int parse_events__is_name_term(struct parse_events_term *term) 329{ 330 return term->type_term == PARSE_EVENTS__TERM_TYPE_NAME; 331} 332 333static char *get_config_name(struct list_head *head_terms) 334{ 335 struct parse_events_term *term; 336 337 if (!head_terms) 338 return NULL; 339 340 list_for_each_entry(term, head_terms, list) 341 if (parse_events__is_name_term(term)) 342 return term->val.str; 343 344 return NULL; 345} 346 347static struct evsel * 348__add_event(struct list_head *list, int *idx, 349 struct perf_event_attr *attr, 350 bool init_attr, 351 char *name, struct perf_pmu *pmu, 352 struct list_head *config_terms, bool auto_merge_stats, 353 const char *cpu_list) 354{ 355 struct evsel *evsel; 356 struct perf_cpu_map *cpus = pmu ? perf_cpu_map__get(pmu->cpus) : 357 cpu_list ? perf_cpu_map__new(cpu_list) : NULL; 358 359 if (pmu) 360 perf_pmu__warn_invalid_formats(pmu); 361 362 if (pmu && attr->type == PERF_TYPE_RAW) 363 perf_pmu__warn_invalid_config(pmu, attr->config, name); 364 365 if (init_attr) 366 event_attr_init(attr); 367 368 evsel = evsel__new_idx(attr, *idx); 369 if (!evsel) { 370 perf_cpu_map__put(cpus); 371 return NULL; 372 } 373 374 (*idx)++; 375 evsel->core.cpus = cpus; 376 evsel->core.own_cpus = perf_cpu_map__get(cpus); 377 evsel->core.system_wide = pmu ? pmu->is_uncore : false; 378 evsel->auto_merge_stats = auto_merge_stats; 379 380 if (name) 381 evsel->name = strdup(name); 382 383 if (config_terms) 384 list_splice(config_terms, &evsel->config_terms); 385 386 if (list) 387 list_add_tail(&evsel->core.node, list); 388 389 return evsel; 390} 391 392struct evsel *parse_events__add_event(int idx, struct perf_event_attr *attr, 393 char *name, struct perf_pmu *pmu) 394{ 395 return __add_event(NULL, &idx, attr, false, name, pmu, NULL, false, 396 NULL); 397} 398 399static int add_event(struct list_head *list, int *idx, 400 struct perf_event_attr *attr, char *name, 401 struct list_head *config_terms) 402{ 403 return __add_event(list, idx, attr, true, name, NULL, config_terms, 404 false, NULL) ? 0 : -ENOMEM; 405} 406 407static int add_event_tool(struct list_head *list, int *idx, 408 enum perf_tool_event tool_event) 409{ 410 struct evsel *evsel; 411 struct perf_event_attr attr = { 412 .type = PERF_TYPE_SOFTWARE, 413 .config = PERF_COUNT_SW_DUMMY, 414 }; 415 416 evsel = __add_event(list, idx, &attr, true, NULL, NULL, NULL, false, 417 "0"); 418 if (!evsel) 419 return -ENOMEM; 420 evsel->tool_event = tool_event; 421 if (tool_event == PERF_TOOL_DURATION_TIME) 422 evsel->unit = "ns"; 423 return 0; 424} 425 426static int parse_aliases(char *str, const char *names[][EVSEL__MAX_ALIASES], int size) 427{ 428 int i, j; 429 int n, longest = -1; 430 431 for (i = 0; i < size; i++) { 432 for (j = 0; j < EVSEL__MAX_ALIASES && names[i][j]; j++) { 433 n = strlen(names[i][j]); 434 if (n > longest && !strncasecmp(str, names[i][j], n)) 435 longest = n; 436 } 437 if (longest > 0) 438 return i; 439 } 440 441 return -1; 442} 443 444typedef int config_term_func_t(struct perf_event_attr *attr, 445 struct parse_events_term *term, 446 struct parse_events_error *err); 447static int config_term_common(struct perf_event_attr *attr, 448 struct parse_events_term *term, 449 struct parse_events_error *err); 450static int config_attr(struct perf_event_attr *attr, 451 struct list_head *head, 452 struct parse_events_error *err, 453 config_term_func_t config_term); 454 455int parse_events_add_cache(struct list_head *list, int *idx, 456 char *type, char *op_result1, char *op_result2, 457 struct parse_events_error *err, 458 struct list_head *head_config) 459{ 460 struct perf_event_attr attr; 461 LIST_HEAD(config_terms); 462 char name[MAX_NAME_LEN], *config_name; 463 int cache_type = -1, cache_op = -1, cache_result = -1; 464 char *op_result[2] = { op_result1, op_result2 }; 465 int i, n; 466 467 /* 468 * No fallback - if we cannot get a clear cache type 469 * then bail out: 470 */ 471 cache_type = parse_aliases(type, evsel__hw_cache, PERF_COUNT_HW_CACHE_MAX); 472 if (cache_type == -1) 473 return -EINVAL; 474 475 config_name = get_config_name(head_config); 476 n = snprintf(name, MAX_NAME_LEN, "%s", type); 477 478 for (i = 0; (i < 2) && (op_result[i]); i++) { 479 char *str = op_result[i]; 480 481 n += snprintf(name + n, MAX_NAME_LEN - n, "-%s", str); 482 483 if (cache_op == -1) { 484 cache_op = parse_aliases(str, evsel__hw_cache_op, 485 PERF_COUNT_HW_CACHE_OP_MAX); 486 if (cache_op >= 0) { 487 if (!evsel__is_cache_op_valid(cache_type, cache_op)) 488 return -EINVAL; 489 continue; 490 } 491 } 492 493 if (cache_result == -1) { 494 cache_result = parse_aliases(str, evsel__hw_cache_result, 495 PERF_COUNT_HW_CACHE_RESULT_MAX); 496 if (cache_result >= 0) 497 continue; 498 } 499 } 500 501 /* 502 * Fall back to reads: 503 */ 504 if (cache_op == -1) 505 cache_op = PERF_COUNT_HW_CACHE_OP_READ; 506 507 /* 508 * Fall back to accesses: 509 */ 510 if (cache_result == -1) 511 cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS; 512 513 memset(&attr, 0, sizeof(attr)); 514 attr.config = cache_type | (cache_op << 8) | (cache_result << 16); 515 attr.type = PERF_TYPE_HW_CACHE; 516 517 if (head_config) { 518 if (config_attr(&attr, head_config, err, 519 config_term_common)) 520 return -EINVAL; 521 522 if (get_config_terms(head_config, &config_terms)) 523 return -ENOMEM; 524 } 525 return add_event(list, idx, &attr, config_name ? : name, &config_terms); 526} 527 528static void tracepoint_error(struct parse_events_error *e, int err, 529 const char *sys, const char *name) 530{ 531 const char *str; 532 char help[BUFSIZ]; 533 534 if (!e) 535 return; 536 537 /* 538 * We get error directly from syscall errno ( > 0), 539 * or from encoded pointer's error ( < 0). 540 */ 541 err = abs(err); 542 543 switch (err) { 544 case EACCES: 545 str = "can't access trace events"; 546 break; 547 case ENOENT: 548 str = "unknown tracepoint"; 549 break; 550 default: 551 str = "failed to add tracepoint"; 552 break; 553 } 554 555 tracing_path__strerror_open_tp(err, help, sizeof(help), sys, name); 556 parse_events__handle_error(e, 0, strdup(str), strdup(help)); 557} 558 559static int add_tracepoint(struct list_head *list, int *idx, 560 const char *sys_name, const char *evt_name, 561 struct parse_events_error *err, 562 struct list_head *head_config) 563{ 564 struct evsel *evsel = evsel__newtp_idx(sys_name, evt_name, (*idx)++); 565 566 if (IS_ERR(evsel)) { 567 tracepoint_error(err, PTR_ERR(evsel), sys_name, evt_name); 568 return PTR_ERR(evsel); 569 } 570 571 if (head_config) { 572 LIST_HEAD(config_terms); 573 574 if (get_config_terms(head_config, &config_terms)) 575 return -ENOMEM; 576 list_splice(&config_terms, &evsel->config_terms); 577 } 578 579 list_add_tail(&evsel->core.node, list); 580 return 0; 581} 582 583static int add_tracepoint_multi_event(struct list_head *list, int *idx, 584 const char *sys_name, const char *evt_name, 585 struct parse_events_error *err, 586 struct list_head *head_config) 587{ 588 char *evt_path; 589 struct dirent *evt_ent; 590 DIR *evt_dir; 591 int ret = 0, found = 0; 592 593 evt_path = get_events_file(sys_name); 594 if (!evt_path) { 595 tracepoint_error(err, errno, sys_name, evt_name); 596 return -1; 597 } 598 evt_dir = opendir(evt_path); 599 if (!evt_dir) { 600 put_events_file(evt_path); 601 tracepoint_error(err, errno, sys_name, evt_name); 602 return -1; 603 } 604 605 while (!ret && (evt_ent = readdir(evt_dir))) { 606 if (!strcmp(evt_ent->d_name, ".") 607 || !strcmp(evt_ent->d_name, "..") 608 || !strcmp(evt_ent->d_name, "enable") 609 || !strcmp(evt_ent->d_name, "filter")) 610 continue; 611 612 if (!strglobmatch(evt_ent->d_name, evt_name)) 613 continue; 614 615 found++; 616 617 ret = add_tracepoint(list, idx, sys_name, evt_ent->d_name, 618 err, head_config); 619 } 620 621 if (!found) { 622 tracepoint_error(err, ENOENT, sys_name, evt_name); 623 ret = -1; 624 } 625 626 put_events_file(evt_path); 627 closedir(evt_dir); 628 return ret; 629} 630 631static int add_tracepoint_event(struct list_head *list, int *idx, 632 const char *sys_name, const char *evt_name, 633 struct parse_events_error *err, 634 struct list_head *head_config) 635{ 636 return strpbrk(evt_name, "*?") ? 637 add_tracepoint_multi_event(list, idx, sys_name, evt_name, 638 err, head_config) : 639 add_tracepoint(list, idx, sys_name, evt_name, 640 err, head_config); 641} 642 643static int add_tracepoint_multi_sys(struct list_head *list, int *idx, 644 const char *sys_name, const char *evt_name, 645 struct parse_events_error *err, 646 struct list_head *head_config) 647{ 648 struct dirent *events_ent; 649 DIR *events_dir; 650 int ret = 0; 651 652 events_dir = tracing_events__opendir(); 653 if (!events_dir) { 654 tracepoint_error(err, errno, sys_name, evt_name); 655 return -1; 656 } 657 658 while (!ret && (events_ent = readdir(events_dir))) { 659 if (!strcmp(events_ent->d_name, ".") 660 || !strcmp(events_ent->d_name, "..") 661 || !strcmp(events_ent->d_name, "enable") 662 || !strcmp(events_ent->d_name, "header_event") 663 || !strcmp(events_ent->d_name, "header_page")) 664 continue; 665 666 if (!strglobmatch(events_ent->d_name, sys_name)) 667 continue; 668 669 ret = add_tracepoint_event(list, idx, events_ent->d_name, 670 evt_name, err, head_config); 671 } 672 673 closedir(events_dir); 674 return ret; 675} 676 677struct __add_bpf_event_param { 678 struct parse_events_state *parse_state; 679 struct list_head *list; 680 struct list_head *head_config; 681}; 682 683static int add_bpf_event(const char *group, const char *event, int fd, struct bpf_object *obj, 684 void *_param) 685{ 686 LIST_HEAD(new_evsels); 687 struct __add_bpf_event_param *param = _param; 688 struct parse_events_state *parse_state = param->parse_state; 689 struct list_head *list = param->list; 690 struct evsel *pos; 691 int err; 692 /* 693 * Check if we should add the event, i.e. if it is a TP but starts with a '!', 694 * then don't add the tracepoint, this will be used for something else, like 695 * adding to a BPF_MAP_TYPE_PROG_ARRAY. 696 * 697 * See tools/perf/examples/bpf/augmented_raw_syscalls.c 698 */ 699 if (group[0] == '!') 700 return 0; 701 702 pr_debug("add bpf event %s:%s and attach bpf program %d\n", 703 group, event, fd); 704 705 err = parse_events_add_tracepoint(&new_evsels, &parse_state->idx, group, 706 event, parse_state->error, 707 param->head_config); 708 if (err) { 709 struct evsel *evsel, *tmp; 710 711 pr_debug("Failed to add BPF event %s:%s\n", 712 group, event); 713 list_for_each_entry_safe(evsel, tmp, &new_evsels, core.node) { 714 list_del_init(&evsel->core.node); 715 evsel__delete(evsel); 716 } 717 return err; 718 } 719 pr_debug("adding %s:%s\n", group, event); 720 721 list_for_each_entry(pos, &new_evsels, core.node) { 722 pr_debug("adding %s:%s to %p\n", 723 group, event, pos); 724 pos->bpf_fd = fd; 725 pos->bpf_obj = obj; 726 } 727 list_splice(&new_evsels, list); 728 return 0; 729} 730 731int parse_events_load_bpf_obj(struct parse_events_state *parse_state, 732 struct list_head *list, 733 struct bpf_object *obj, 734 struct list_head *head_config) 735{ 736 int err; 737 char errbuf[BUFSIZ]; 738 struct __add_bpf_event_param param = {parse_state, list, head_config}; 739 static bool registered_unprobe_atexit = false; 740 741 if (IS_ERR(obj) || !obj) { 742 snprintf(errbuf, sizeof(errbuf), 743 "Internal error: load bpf obj with NULL"); 744 err = -EINVAL; 745 goto errout; 746 } 747 748 /* 749 * Register atexit handler before calling bpf__probe() so 750 * bpf__probe() don't need to unprobe probe points its already 751 * created when failure. 752 */ 753 if (!registered_unprobe_atexit) { 754 atexit(bpf__clear); 755 registered_unprobe_atexit = true; 756 } 757 758 err = bpf__probe(obj); 759 if (err) { 760 bpf__strerror_probe(obj, err, errbuf, sizeof(errbuf)); 761 goto errout; 762 } 763 764 err = bpf__load(obj); 765 if (err) { 766 bpf__strerror_load(obj, err, errbuf, sizeof(errbuf)); 767 goto errout; 768 } 769 770 err = bpf__foreach_event(obj, add_bpf_event, ¶m); 771 if (err) { 772 snprintf(errbuf, sizeof(errbuf), 773 "Attach events in BPF object failed"); 774 goto errout; 775 } 776 777 return 0; 778errout: 779 parse_events__handle_error(parse_state->error, 0, 780 strdup(errbuf), strdup("(add -v to see detail)")); 781 return err; 782} 783 784static int 785parse_events_config_bpf(struct parse_events_state *parse_state, 786 struct bpf_object *obj, 787 struct list_head *head_config) 788{ 789 struct parse_events_term *term; 790 int error_pos; 791 792 if (!head_config || list_empty(head_config)) 793 return 0; 794 795 list_for_each_entry(term, head_config, list) { 796 int err; 797 798 if (term->type_term != PARSE_EVENTS__TERM_TYPE_USER) { 799 parse_events__handle_error(parse_state->error, term->err_term, 800 strdup("Invalid config term for BPF object"), 801 NULL); 802 return -EINVAL; 803 } 804 805 err = bpf__config_obj(obj, term, parse_state->evlist, &error_pos); 806 if (err) { 807 char errbuf[BUFSIZ]; 808 int idx; 809 810 bpf__strerror_config_obj(obj, term, parse_state->evlist, 811 &error_pos, err, errbuf, 812 sizeof(errbuf)); 813 814 if (err == -BPF_LOADER_ERRNO__OBJCONF_MAP_VALUE) 815 idx = term->err_val; 816 else 817 idx = term->err_term + error_pos; 818 819 parse_events__handle_error(parse_state->error, idx, 820 strdup(errbuf), 821 strdup( 822"Hint:\tValid config terms:\n" 823" \tmap:[<arraymap>].value<indices>=[value]\n" 824" \tmap:[<eventmap>].event<indices>=[event]\n" 825"\n" 826" \twhere <indices> is something like [0,3...5] or [all]\n" 827" \t(add -v to see detail)")); 828 return err; 829 } 830 } 831 return 0; 832} 833 834/* 835 * Split config terms: 836 * perf record -e bpf.c/call-graph=fp,map:array.value[0]=1/ ... 837 * 'call-graph=fp' is 'evt config', should be applied to each 838 * events in bpf.c. 839 * 'map:array.value[0]=1' is 'obj config', should be processed 840 * with parse_events_config_bpf. 841 * 842 * Move object config terms from the first list to obj_head_config. 843 */ 844static void 845split_bpf_config_terms(struct list_head *evt_head_config, 846 struct list_head *obj_head_config) 847{ 848 struct parse_events_term *term, *temp; 849 850 /* 851 * Currectly, all possible user config term 852 * belong to bpf object. parse_events__is_hardcoded_term() 853 * happends to be a good flag. 854 * 855 * See parse_events_config_bpf() and 856 * config_term_tracepoint(). 857 */ 858 list_for_each_entry_safe(term, temp, evt_head_config, list) 859 if (!parse_events__is_hardcoded_term(term)) 860 list_move_tail(&term->list, obj_head_config); 861} 862 863int parse_events_load_bpf(struct parse_events_state *parse_state, 864 struct list_head *list, 865 char *bpf_file_name, 866 bool source, 867 struct list_head *head_config) 868{ 869 int err; 870 struct bpf_object *obj; 871 LIST_HEAD(obj_head_config); 872 873 if (head_config) 874 split_bpf_config_terms(head_config, &obj_head_config); 875 876 obj = bpf__prepare_load(bpf_file_name, source); 877 if (IS_ERR(obj)) { 878 char errbuf[BUFSIZ]; 879 880 err = PTR_ERR(obj); 881 882 if (err == -ENOTSUP) 883 snprintf(errbuf, sizeof(errbuf), 884 "BPF support is not compiled"); 885 else 886 bpf__strerror_prepare_load(bpf_file_name, 887 source, 888 -err, errbuf, 889 sizeof(errbuf)); 890 891 parse_events__handle_error(parse_state->error, 0, 892 strdup(errbuf), strdup("(add -v to see detail)")); 893 return err; 894 } 895 896 err = parse_events_load_bpf_obj(parse_state, list, obj, head_config); 897 if (err) 898 return err; 899 err = parse_events_config_bpf(parse_state, obj, &obj_head_config); 900 901 /* 902 * Caller doesn't know anything about obj_head_config, 903 * so combine them together again before returnning. 904 */ 905 if (head_config) 906 list_splice_tail(&obj_head_config, head_config); 907 return err; 908} 909 910static int 911parse_breakpoint_type(const char *type, struct perf_event_attr *attr) 912{ 913 int i; 914 915 for (i = 0; i < 3; i++) { 916 if (!type || !type[i]) 917 break; 918 919#define CHECK_SET_TYPE(bit) \ 920do { \ 921 if (attr->bp_type & bit) \ 922 return -EINVAL; \ 923 else \ 924 attr->bp_type |= bit; \ 925} while (0) 926 927 switch (type[i]) { 928 case 'r': 929 CHECK_SET_TYPE(HW_BREAKPOINT_R); 930 break; 931 case 'w': 932 CHECK_SET_TYPE(HW_BREAKPOINT_W); 933 break; 934 case 'x': 935 CHECK_SET_TYPE(HW_BREAKPOINT_X); 936 break; 937 default: 938 return -EINVAL; 939 } 940 } 941 942#undef CHECK_SET_TYPE 943 944 if (!attr->bp_type) /* Default */ 945 attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W; 946 947 return 0; 948} 949 950int parse_events_add_breakpoint(struct list_head *list, int *idx, 951 u64 addr, char *type, u64 len) 952{ 953 struct perf_event_attr attr; 954 955 memset(&attr, 0, sizeof(attr)); 956 attr.bp_addr = addr; 957 958 if (parse_breakpoint_type(type, &attr)) 959 return -EINVAL; 960 961 /* Provide some defaults if len is not specified */ 962 if (!len) { 963 if (attr.bp_type == HW_BREAKPOINT_X) 964 len = sizeof(long); 965 else 966 len = HW_BREAKPOINT_LEN_4; 967 } 968 969 attr.bp_len = len; 970 971 attr.type = PERF_TYPE_BREAKPOINT; 972 attr.sample_period = 1; 973 974 return add_event(list, idx, &attr, NULL, NULL); 975} 976 977static int check_type_val(struct parse_events_term *term, 978 struct parse_events_error *err, 979 int type) 980{ 981 if (type == term->type_val) 982 return 0; 983 984 if (err) { 985 parse_events__handle_error(err, term->err_val, 986 type == PARSE_EVENTS__TERM_TYPE_NUM 987 ? strdup("expected numeric value") 988 : strdup("expected string value"), 989 NULL); 990 } 991 return -EINVAL; 992} 993 994/* 995 * Update according to parse-events.l 996 */ 997static const char *config_term_names[__PARSE_EVENTS__TERM_TYPE_NR] = { 998 [PARSE_EVENTS__TERM_TYPE_USER] = "<sysfs term>", 999 [PARSE_EVENTS__TERM_TYPE_CONFIG] = "config", 1000 [PARSE_EVENTS__TERM_TYPE_CONFIG1] = "config1", 1001 [PARSE_EVENTS__TERM_TYPE_CONFIG2] = "config2", 1002 [PARSE_EVENTS__TERM_TYPE_NAME] = "name", 1003 [PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD] = "period", 1004 [PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ] = "freq", 1005 [PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE] = "branch_type", 1006 [PARSE_EVENTS__TERM_TYPE_TIME] = "time", 1007 [PARSE_EVENTS__TERM_TYPE_CALLGRAPH] = "call-graph", 1008 [PARSE_EVENTS__TERM_TYPE_STACKSIZE] = "stack-size", 1009 [PARSE_EVENTS__TERM_TYPE_NOINHERIT] = "no-inherit", 1010 [PARSE_EVENTS__TERM_TYPE_INHERIT] = "inherit", 1011 [PARSE_EVENTS__TERM_TYPE_MAX_STACK] = "max-stack", 1012 [PARSE_EVENTS__TERM_TYPE_MAX_EVENTS] = "nr", 1013 [PARSE_EVENTS__TERM_TYPE_OVERWRITE] = "overwrite", 1014 [PARSE_EVENTS__TERM_TYPE_NOOVERWRITE] = "no-overwrite", 1015 [PARSE_EVENTS__TERM_TYPE_DRV_CFG] = "driver-config", 1016 [PARSE_EVENTS__TERM_TYPE_PERCORE] = "percore", 1017 [PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT] = "aux-output", 1018 [PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE] = "aux-sample-size", 1019}; 1020 1021static bool config_term_shrinked; 1022 1023static bool 1024config_term_avail(int term_type, struct parse_events_error *err) 1025{ 1026 char *err_str; 1027 1028 if (term_type < 0 || term_type >= __PARSE_EVENTS__TERM_TYPE_NR) { 1029 parse_events__handle_error(err, -1, 1030 strdup("Invalid term_type"), NULL); 1031 return false; 1032 } 1033 if (!config_term_shrinked) 1034 return true; 1035 1036 switch (term_type) { 1037 case PARSE_EVENTS__TERM_TYPE_CONFIG: 1038 case PARSE_EVENTS__TERM_TYPE_CONFIG1: 1039 case PARSE_EVENTS__TERM_TYPE_CONFIG2: 1040 case PARSE_EVENTS__TERM_TYPE_NAME: 1041 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD: 1042 case PARSE_EVENTS__TERM_TYPE_PERCORE: 1043 return true; 1044 default: 1045 if (!err) 1046 return false; 1047 1048 /* term_type is validated so indexing is safe */ 1049 if (asprintf(&err_str, "'%s' is not usable in 'perf stat'", 1050 config_term_names[term_type]) >= 0) 1051 parse_events__handle_error(err, -1, err_str, NULL); 1052 return false; 1053 } 1054} 1055 1056void parse_events__shrink_config_terms(void) 1057{ 1058 config_term_shrinked = true; 1059} 1060 1061static int config_term_common(struct perf_event_attr *attr, 1062 struct parse_events_term *term, 1063 struct parse_events_error *err) 1064{ 1065#define CHECK_TYPE_VAL(type) \ 1066do { \ 1067 if (check_type_val(term, err, PARSE_EVENTS__TERM_TYPE_ ## type)) \ 1068 return -EINVAL; \ 1069} while (0) 1070 1071 switch (term->type_term) { 1072 case PARSE_EVENTS__TERM_TYPE_CONFIG: 1073 CHECK_TYPE_VAL(NUM); 1074 attr->config = term->val.num; 1075 break; 1076 case PARSE_EVENTS__TERM_TYPE_CONFIG1: 1077 CHECK_TYPE_VAL(NUM); 1078 attr->config1 = term->val.num; 1079 break; 1080 case PARSE_EVENTS__TERM_TYPE_CONFIG2: 1081 CHECK_TYPE_VAL(NUM); 1082 attr->config2 = term->val.num; 1083 break; 1084 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD: 1085 CHECK_TYPE_VAL(NUM); 1086 break; 1087 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ: 1088 CHECK_TYPE_VAL(NUM); 1089 break; 1090 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE: 1091 CHECK_TYPE_VAL(STR); 1092 if (strcmp(term->val.str, "no") && 1093 parse_branch_str(term->val.str, 1094 &attr->branch_sample_type)) { 1095 parse_events__handle_error(err, term->err_val, 1096 strdup("invalid branch sample type"), 1097 NULL); 1098 return -EINVAL; 1099 } 1100 break; 1101 case PARSE_EVENTS__TERM_TYPE_TIME: 1102 CHECK_TYPE_VAL(NUM); 1103 if (term->val.num > 1) { 1104 parse_events__handle_error(err, term->err_val, 1105 strdup("expected 0 or 1"), 1106 NULL); 1107 return -EINVAL; 1108 } 1109 break; 1110 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH: 1111 CHECK_TYPE_VAL(STR); 1112 break; 1113 case PARSE_EVENTS__TERM_TYPE_STACKSIZE: 1114 CHECK_TYPE_VAL(NUM); 1115 break; 1116 case PARSE_EVENTS__TERM_TYPE_INHERIT: 1117 CHECK_TYPE_VAL(NUM); 1118 break; 1119 case PARSE_EVENTS__TERM_TYPE_NOINHERIT: 1120 CHECK_TYPE_VAL(NUM); 1121 break; 1122 case PARSE_EVENTS__TERM_TYPE_OVERWRITE: 1123 CHECK_TYPE_VAL(NUM); 1124 break; 1125 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE: 1126 CHECK_TYPE_VAL(NUM); 1127 break; 1128 case PARSE_EVENTS__TERM_TYPE_NAME: 1129 CHECK_TYPE_VAL(STR); 1130 break; 1131 case PARSE_EVENTS__TERM_TYPE_MAX_STACK: 1132 CHECK_TYPE_VAL(NUM); 1133 break; 1134 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS: 1135 CHECK_TYPE_VAL(NUM); 1136 break; 1137 case PARSE_EVENTS__TERM_TYPE_PERCORE: 1138 CHECK_TYPE_VAL(NUM); 1139 if ((unsigned int)term->val.num > 1) { 1140 parse_events__handle_error(err, term->err_val, 1141 strdup("expected 0 or 1"), 1142 NULL); 1143 return -EINVAL; 1144 } 1145 break; 1146 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT: 1147 CHECK_TYPE_VAL(NUM); 1148 break; 1149 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE: 1150 CHECK_TYPE_VAL(NUM); 1151 if (term->val.num > UINT_MAX) { 1152 parse_events__handle_error(err, term->err_val, 1153 strdup("too big"), 1154 NULL); 1155 return -EINVAL; 1156 } 1157 break; 1158 default: 1159 parse_events__handle_error(err, term->err_term, 1160 strdup("unknown term"), 1161 parse_events_formats_error_string(NULL)); 1162 return -EINVAL; 1163 } 1164 1165 /* 1166 * Check term availbility after basic checking so 1167 * PARSE_EVENTS__TERM_TYPE_USER can be found and filtered. 1168 * 1169 * If check availbility at the entry of this function, 1170 * user will see "'<sysfs term>' is not usable in 'perf stat'" 1171 * if an invalid config term is provided for legacy events 1172 * (for example, instructions/badterm/...), which is confusing. 1173 */ 1174 if (!config_term_avail(term->type_term, err)) 1175 return -EINVAL; 1176 return 0; 1177#undef CHECK_TYPE_VAL 1178} 1179 1180static int config_term_pmu(struct perf_event_attr *attr, 1181 struct parse_events_term *term, 1182 struct parse_events_error *err) 1183{ 1184 if (term->type_term == PARSE_EVENTS__TERM_TYPE_USER || 1185 term->type_term == PARSE_EVENTS__TERM_TYPE_DRV_CFG) 1186 /* 1187 * Always succeed for sysfs terms, as we dont know 1188 * at this point what type they need to have. 1189 */ 1190 return 0; 1191 else 1192 return config_term_common(attr, term, err); 1193} 1194 1195static int config_term_tracepoint(struct perf_event_attr *attr, 1196 struct parse_events_term *term, 1197 struct parse_events_error *err) 1198{ 1199 switch (term->type_term) { 1200 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH: 1201 case PARSE_EVENTS__TERM_TYPE_STACKSIZE: 1202 case PARSE_EVENTS__TERM_TYPE_INHERIT: 1203 case PARSE_EVENTS__TERM_TYPE_NOINHERIT: 1204 case PARSE_EVENTS__TERM_TYPE_MAX_STACK: 1205 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS: 1206 case PARSE_EVENTS__TERM_TYPE_OVERWRITE: 1207 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE: 1208 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT: 1209 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE: 1210 return config_term_common(attr, term, err); 1211 default: 1212 if (err) { 1213 parse_events__handle_error(err, term->err_term, 1214 strdup("unknown term"), 1215 strdup("valid terms: call-graph,stack-size\n")); 1216 } 1217 return -EINVAL; 1218 } 1219 1220 return 0; 1221} 1222 1223static int config_attr(struct perf_event_attr *attr, 1224 struct list_head *head, 1225 struct parse_events_error *err, 1226 config_term_func_t config_term) 1227{ 1228 struct parse_events_term *term; 1229 1230 list_for_each_entry(term, head, list) 1231 if (config_term(attr, term, err)) 1232 return -EINVAL; 1233 1234 return 0; 1235} 1236 1237static int get_config_terms(struct list_head *head_config, 1238 struct list_head *head_terms __maybe_unused) 1239{ 1240#define ADD_CONFIG_TERM(__type, __weak) \ 1241 struct evsel_config_term *__t; \ 1242 \ 1243 __t = zalloc(sizeof(*__t)); \ 1244 if (!__t) \ 1245 return -ENOMEM; \ 1246 \ 1247 INIT_LIST_HEAD(&__t->list); \ 1248 __t->type = EVSEL__CONFIG_TERM_ ## __type; \ 1249 __t->weak = __weak; \ 1250 list_add_tail(&__t->list, head_terms) 1251 1252#define ADD_CONFIG_TERM_VAL(__type, __name, __val, __weak) \ 1253do { \ 1254 ADD_CONFIG_TERM(__type, __weak); \ 1255 __t->val.__name = __val; \ 1256} while (0) 1257 1258#define ADD_CONFIG_TERM_STR(__type, __val, __weak) \ 1259do { \ 1260 ADD_CONFIG_TERM(__type, __weak); \ 1261 __t->val.str = strdup(__val); \ 1262 if (!__t->val.str) { \ 1263 zfree(&__t); \ 1264 return -ENOMEM; \ 1265 } \ 1266 __t->free_str = true; \ 1267} while (0) 1268 1269 struct parse_events_term *term; 1270 1271 list_for_each_entry(term, head_config, list) { 1272 switch (term->type_term) { 1273 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD: 1274 ADD_CONFIG_TERM_VAL(PERIOD, period, term->val.num, term->weak); 1275 break; 1276 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ: 1277 ADD_CONFIG_TERM_VAL(FREQ, freq, term->val.num, term->weak); 1278 break; 1279 case PARSE_EVENTS__TERM_TYPE_TIME: 1280 ADD_CONFIG_TERM_VAL(TIME, time, term->val.num, term->weak); 1281 break; 1282 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH: 1283 ADD_CONFIG_TERM_STR(CALLGRAPH, term->val.str, term->weak); 1284 break; 1285 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE: 1286 ADD_CONFIG_TERM_STR(BRANCH, term->val.str, term->weak); 1287 break; 1288 case PARSE_EVENTS__TERM_TYPE_STACKSIZE: 1289 ADD_CONFIG_TERM_VAL(STACK_USER, stack_user, 1290 term->val.num, term->weak); 1291 break; 1292 case PARSE_EVENTS__TERM_TYPE_INHERIT: 1293 ADD_CONFIG_TERM_VAL(INHERIT, inherit, 1294 term->val.num ? 1 : 0, term->weak); 1295 break; 1296 case PARSE_EVENTS__TERM_TYPE_NOINHERIT: 1297 ADD_CONFIG_TERM_VAL(INHERIT, inherit, 1298 term->val.num ? 0 : 1, term->weak); 1299 break; 1300 case PARSE_EVENTS__TERM_TYPE_MAX_STACK: 1301 ADD_CONFIG_TERM_VAL(MAX_STACK, max_stack, 1302 term->val.num, term->weak); 1303 break; 1304 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS: 1305 ADD_CONFIG_TERM_VAL(MAX_EVENTS, max_events, 1306 term->val.num, term->weak); 1307 break; 1308 case PARSE_EVENTS__TERM_TYPE_OVERWRITE: 1309 ADD_CONFIG_TERM_VAL(OVERWRITE, overwrite, 1310 term->val.num ? 1 : 0, term->weak); 1311 break; 1312 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE: 1313 ADD_CONFIG_TERM_VAL(OVERWRITE, overwrite, 1314 term->val.num ? 0 : 1, term->weak); 1315 break; 1316 case PARSE_EVENTS__TERM_TYPE_DRV_CFG: 1317 ADD_CONFIG_TERM_STR(DRV_CFG, term->val.str, term->weak); 1318 break; 1319 case PARSE_EVENTS__TERM_TYPE_PERCORE: 1320 ADD_CONFIG_TERM_VAL(PERCORE, percore, 1321 term->val.num ? true : false, term->weak); 1322 break; 1323 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT: 1324 ADD_CONFIG_TERM_VAL(AUX_OUTPUT, aux_output, 1325 term->val.num ? 1 : 0, term->weak); 1326 break; 1327 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE: 1328 ADD_CONFIG_TERM_VAL(AUX_SAMPLE_SIZE, aux_sample_size, 1329 term->val.num, term->weak); 1330 break; 1331 default: 1332 break; 1333 } 1334 } 1335 return 0; 1336} 1337 1338/* 1339 * Add EVSEL__CONFIG_TERM_CFG_CHG where cfg_chg will have a bit set for 1340 * each bit of attr->config that the user has changed. 1341 */ 1342static int get_config_chgs(struct perf_pmu *pmu, struct list_head *head_config, 1343 struct list_head *head_terms) 1344{ 1345 struct parse_events_term *term; 1346 u64 bits = 0; 1347 int type; 1348 1349 list_for_each_entry(term, head_config, list) { 1350 switch (term->type_term) { 1351 case PARSE_EVENTS__TERM_TYPE_USER: 1352 type = perf_pmu__format_type(&pmu->format, term->config); 1353 if (type != PERF_PMU_FORMAT_VALUE_CONFIG) 1354 continue; 1355 bits |= perf_pmu__format_bits(&pmu->format, term->config); 1356 break; 1357 case PARSE_EVENTS__TERM_TYPE_CONFIG: 1358 bits = ~(u64)0; 1359 break; 1360 default: 1361 break; 1362 } 1363 } 1364 1365 if (bits) 1366 ADD_CONFIG_TERM_VAL(CFG_CHG, cfg_chg, bits, false); 1367 1368#undef ADD_CONFIG_TERM 1369 return 0; 1370} 1371 1372int parse_events_add_tracepoint(struct list_head *list, int *idx, 1373 const char *sys, const char *event, 1374 struct parse_events_error *err, 1375 struct list_head *head_config) 1376{ 1377 if (head_config) { 1378 struct perf_event_attr attr; 1379 1380 if (config_attr(&attr, head_config, err, 1381 config_term_tracepoint)) 1382 return -EINVAL; 1383 } 1384 1385 if (strpbrk(sys, "*?")) 1386 return add_tracepoint_multi_sys(list, idx, sys, event, 1387 err, head_config); 1388 else 1389 return add_tracepoint_event(list, idx, sys, event, 1390 err, head_config); 1391} 1392 1393int parse_events_add_numeric(struct parse_events_state *parse_state, 1394 struct list_head *list, 1395 u32 type, u64 config, 1396 struct list_head *head_config) 1397{ 1398 struct perf_event_attr attr; 1399 LIST_HEAD(config_terms); 1400 1401 memset(&attr, 0, sizeof(attr)); 1402 attr.type = type; 1403 attr.config = config; 1404 1405 if (head_config) { 1406 if (config_attr(&attr, head_config, parse_state->error, 1407 config_term_common)) 1408 return -EINVAL; 1409 1410 if (get_config_terms(head_config, &config_terms)) 1411 return -ENOMEM; 1412 } 1413 1414 return add_event(list, &parse_state->idx, &attr, 1415 get_config_name(head_config), &config_terms); 1416} 1417 1418int parse_events_add_tool(struct parse_events_state *parse_state, 1419 struct list_head *list, 1420 enum perf_tool_event tool_event) 1421{ 1422 return add_event_tool(list, &parse_state->idx, tool_event); 1423} 1424 1425static bool config_term_percore(struct list_head *config_terms) 1426{ 1427 struct evsel_config_term *term; 1428 1429 list_for_each_entry(term, config_terms, list) { 1430 if (term->type == EVSEL__CONFIG_TERM_PERCORE) 1431 return term->val.percore; 1432 } 1433 1434 return false; 1435} 1436 1437int parse_events_add_pmu(struct parse_events_state *parse_state, 1438 struct list_head *list, char *name, 1439 struct list_head *head_config, 1440 bool auto_merge_stats, 1441 bool use_alias) 1442{ 1443 struct perf_event_attr attr; 1444 struct perf_pmu_info info; 1445 struct perf_pmu *pmu; 1446 struct evsel *evsel; 1447 struct parse_events_error *err = parse_state->error; 1448 bool use_uncore_alias; 1449 LIST_HEAD(config_terms); 1450 1451 pmu = parse_state->fake_pmu ?: perf_pmu__find(name); 1452 1453 if (verbose > 1 && !(pmu && pmu->selectable)) { 1454 fprintf(stderr, "Attempting to add event pmu '%s' with '", 1455 name); 1456 if (head_config) { 1457 struct parse_events_term *term; 1458 1459 list_for_each_entry(term, head_config, list) { 1460 fprintf(stderr, "%s,", term->config); 1461 } 1462 } 1463 fprintf(stderr, "' that may result in non-fatal errors\n"); 1464 } 1465 1466 if (!pmu) { 1467 char *err_str; 1468 1469 if (asprintf(&err_str, 1470 "Cannot find PMU `%s'. Missing kernel support?", 1471 name) >= 0) 1472 parse_events__handle_error(err, 0, err_str, NULL); 1473 return -EINVAL; 1474 } 1475 1476 if (pmu->default_config) { 1477 memcpy(&attr, pmu->default_config, 1478 sizeof(struct perf_event_attr)); 1479 } else { 1480 memset(&attr, 0, sizeof(attr)); 1481 } 1482 1483 use_uncore_alias = (pmu->is_uncore && use_alias); 1484 1485 if (!head_config) { 1486 attr.type = pmu->type; 1487 evsel = __add_event(list, &parse_state->idx, &attr, true, NULL, 1488 pmu, NULL, auto_merge_stats, NULL); 1489 if (evsel) { 1490 evsel->pmu_name = name ? strdup(name) : NULL; 1491 evsel->use_uncore_alias = use_uncore_alias; 1492 return 0; 1493 } else { 1494 return -ENOMEM; 1495 } 1496 } 1497 1498 if (!parse_state->fake_pmu && perf_pmu__check_alias(pmu, head_config, &info)) 1499 return -EINVAL; 1500 1501 if (verbose > 1) { 1502 fprintf(stderr, "After aliases, add event pmu '%s' with '", 1503 name); 1504 if (head_config) { 1505 struct parse_events_term *term; 1506 1507 list_for_each_entry(term, head_config, list) { 1508 fprintf(stderr, "%s,", term->config); 1509 } 1510 } 1511 fprintf(stderr, "' that may result in non-fatal errors\n"); 1512 } 1513 1514 /* 1515 * Configure hardcoded terms first, no need to check 1516 * return value when called with fail == 0 ;) 1517 */ 1518 if (config_attr(&attr, head_config, parse_state->error, config_term_pmu)) 1519 return -EINVAL; 1520 1521 if (get_config_terms(head_config, &config_terms)) 1522 return -ENOMEM; 1523 1524 /* 1525 * When using default config, record which bits of attr->config were 1526 * changed by the user. 1527 */ 1528 if (pmu->default_config && get_config_chgs(pmu, head_config, &config_terms)) 1529 return -ENOMEM; 1530 1531 if (!parse_state->fake_pmu && perf_pmu__config(pmu, &attr, head_config, parse_state->error)) { 1532 struct evsel_config_term *pos, *tmp; 1533 1534 list_for_each_entry_safe(pos, tmp, &config_terms, list) { 1535 list_del_init(&pos->list); 1536 if (pos->free_str) 1537 zfree(&pos->val.str); 1538 free(pos); 1539 } 1540 return -EINVAL; 1541 } 1542 1543 evsel = __add_event(list, &parse_state->idx, &attr, true, 1544 get_config_name(head_config), pmu, 1545 &config_terms, auto_merge_stats, NULL); 1546 if (!evsel) 1547 return -ENOMEM; 1548 1549 evsel->pmu_name = name ? strdup(name) : NULL; 1550 evsel->use_uncore_alias = use_uncore_alias; 1551 evsel->percore = config_term_percore(&evsel->config_terms); 1552 1553 if (parse_state->fake_pmu) 1554 return 0; 1555 1556 evsel->unit = info.unit; 1557 evsel->scale = info.scale; 1558 evsel->per_pkg = info.per_pkg; 1559 evsel->snapshot = info.snapshot; 1560 evsel->metric_expr = info.metric_expr; 1561 evsel->metric_name = info.metric_name; 1562 return 0; 1563} 1564 1565int parse_events_multi_pmu_add(struct parse_events_state *parse_state, 1566 char *str, struct list_head **listp) 1567{ 1568 struct parse_events_term *term; 1569 struct list_head *list; 1570 struct perf_pmu *pmu = NULL; 1571 int ok = 0; 1572 1573 *listp = NULL; 1574 /* Add it for all PMUs that support the alias */ 1575 list = malloc(sizeof(struct list_head)); 1576 if (!list) 1577 return -1; 1578 INIT_LIST_HEAD(list); 1579 while ((pmu = perf_pmu__scan(pmu)) != NULL) { 1580 struct perf_pmu_alias *alias; 1581 1582 list_for_each_entry(alias, &pmu->aliases, list) { 1583 if (!strcasecmp(alias->name, str)) { 1584 struct list_head *head; 1585 char *config; 1586 1587 head = malloc(sizeof(struct list_head)); 1588 if (!head) 1589 return -1; 1590 INIT_LIST_HEAD(head); 1591 config = strdup(str); 1592 if (!config) 1593 return -1; 1594 if (parse_events_term__num(&term, 1595 PARSE_EVENTS__TERM_TYPE_USER, 1596 config, 1, false, &config, 1597 NULL) < 0) { 1598 free(list); 1599 free(config); 1600 return -1; 1601 } 1602 list_add_tail(&term->list, head); 1603 1604 if (!parse_events_add_pmu(parse_state, list, 1605 pmu->name, head, 1606 true, true)) { 1607 pr_debug("%s -> %s/%s/\n", str, 1608 pmu->name, alias->str); 1609 ok++; 1610 } 1611 1612 parse_events_terms__delete(head); 1613 } 1614 } 1615 } 1616 if (!ok) { 1617 free(list); 1618 return -1; 1619 } 1620 *listp = list; 1621 return 0; 1622} 1623 1624int parse_events__modifier_group(struct list_head *list, 1625 char *event_mod) 1626{ 1627 return parse_events__modifier_event(list, event_mod, true); 1628} 1629 1630/* 1631 * Check if the two uncore PMUs are from the same uncore block 1632 * The format of the uncore PMU name is uncore_#blockname_#pmuidx 1633 */ 1634static bool is_same_uncore_block(const char *pmu_name_a, const char *pmu_name_b) 1635{ 1636 char *end_a, *end_b; 1637 1638 end_a = strrchr(pmu_name_a, '_'); 1639 end_b = strrchr(pmu_name_b, '_'); 1640 1641 if (!end_a || !end_b) 1642 return false; 1643 1644 if ((end_a - pmu_name_a) != (end_b - pmu_name_b)) 1645 return false; 1646 1647 return (strncmp(pmu_name_a, pmu_name_b, end_a - pmu_name_a) == 0); 1648} 1649 1650static int 1651parse_events__set_leader_for_uncore_aliase(char *name, struct list_head *list, 1652 struct parse_events_state *parse_state) 1653{ 1654 struct evsel *evsel, *leader; 1655 uintptr_t *leaders; 1656 bool is_leader = true; 1657 int i, nr_pmu = 0, total_members, ret = 0; 1658 1659 leader = list_first_entry(list, struct evsel, core.node); 1660 evsel = list_last_entry(list, struct evsel, core.node); 1661 total_members = evsel->idx - leader->idx + 1; 1662 1663 leaders = calloc(total_members, sizeof(uintptr_t)); 1664 if (WARN_ON(!leaders)) 1665 return 0; 1666 1667 /* 1668 * Going through the whole group and doing sanity check. 1669 * All members must use alias, and be from the same uncore block. 1670 * Also, storing the leader events in an array. 1671 */ 1672 __evlist__for_each_entry(list, evsel) { 1673 1674 /* Only split the uncore group which members use alias */ 1675 if (!evsel->use_uncore_alias) 1676 goto out; 1677 1678 /* The events must be from the same uncore block */ 1679 if (!is_same_uncore_block(leader->pmu_name, evsel->pmu_name)) 1680 goto out; 1681 1682 if (!is_leader) 1683 continue; 1684 /* 1685 * If the event's PMU name starts to repeat, it must be a new 1686 * event. That can be used to distinguish the leader from 1687 * other members, even they have the same event name. 1688 */ 1689 if ((leader != evsel) && 1690 !strcmp(leader->pmu_name, evsel->pmu_name)) { 1691 is_leader = false; 1692 continue; 1693 } 1694 1695 /* Store the leader event for each PMU */ 1696 leaders[nr_pmu++] = (uintptr_t) evsel; 1697 } 1698 1699 /* only one event alias */ 1700 if (nr_pmu == total_members) { 1701 parse_state->nr_groups--; 1702 goto handled; 1703 } 1704 1705 /* 1706 * An uncore event alias is a joint name which means the same event 1707 * runs on all PMUs of a block. 1708 * Perf doesn't support mixed events from different PMUs in the same 1709 * group. The big group has to be split into multiple small groups 1710 * which only include the events from the same PMU. 1711 * 1712 * Here the uncore event aliases must be from the same uncore block. 1713 * The number of PMUs must be same for each alias. The number of new 1714 * small groups equals to the number of PMUs. 1715 * Setting the leader event for corresponding members in each group. 1716 */ 1717 i = 0; 1718 __evlist__for_each_entry(list, evsel) { 1719 if (i >= nr_pmu) 1720 i = 0; 1721 evsel->leader = (struct evsel *) leaders[i++]; 1722 } 1723 1724 /* The number of members and group name are same for each group */ 1725 for (i = 0; i < nr_pmu; i++) { 1726 evsel = (struct evsel *) leaders[i]; 1727 evsel->core.nr_members = total_members / nr_pmu; 1728 evsel->group_name = name ? strdup(name) : NULL; 1729 } 1730 1731 /* Take the new small groups into account */ 1732 parse_state->nr_groups += nr_pmu - 1; 1733 1734handled: 1735 ret = 1; 1736out: 1737 free(leaders); 1738 return ret; 1739} 1740 1741void parse_events__set_leader(char *name, struct list_head *list, 1742 struct parse_events_state *parse_state) 1743{ 1744 struct evsel *leader; 1745 1746 if (list_empty(list)) { 1747 WARN_ONCE(true, "WARNING: failed to set leader: empty list"); 1748 return; 1749 } 1750 1751 if (parse_events__set_leader_for_uncore_aliase(name, list, parse_state)) 1752 return; 1753 1754 __perf_evlist__set_leader(list); 1755 leader = list_entry(list->next, struct evsel, core.node); 1756 leader->group_name = name ? strdup(name) : NULL; 1757} 1758 1759/* list_event is assumed to point to malloc'ed memory */ 1760void parse_events_update_lists(struct list_head *list_event, 1761 struct list_head *list_all) 1762{ 1763 /* 1764 * Called for single event definition. Update the 1765 * 'all event' list, and reinit the 'single event' 1766 * list, for next event definition. 1767 */ 1768 list_splice_tail(list_event, list_all); 1769 free(list_event); 1770} 1771 1772struct event_modifier { 1773 int eu; 1774 int ek; 1775 int eh; 1776 int eH; 1777 int eG; 1778 int eI; 1779 int precise; 1780 int precise_max; 1781 int exclude_GH; 1782 int sample_read; 1783 int pinned; 1784 int weak; 1785 int exclusive; 1786}; 1787 1788static int get_event_modifier(struct event_modifier *mod, char *str, 1789 struct evsel *evsel) 1790{ 1791 int eu = evsel ? evsel->core.attr.exclude_user : 0; 1792 int ek = evsel ? evsel->core.attr.exclude_kernel : 0; 1793 int eh = evsel ? evsel->core.attr.exclude_hv : 0; 1794 int eH = evsel ? evsel->core.attr.exclude_host : 0; 1795 int eG = evsel ? evsel->core.attr.exclude_guest : 0; 1796 int eI = evsel ? evsel->core.attr.exclude_idle : 0; 1797 int precise = evsel ? evsel->core.attr.precise_ip : 0; 1798 int precise_max = 0; 1799 int sample_read = 0; 1800 int pinned = evsel ? evsel->core.attr.pinned : 0; 1801 int exclusive = evsel ? evsel->core.attr.exclusive : 0; 1802 1803 int exclude = eu | ek | eh; 1804 int exclude_GH = evsel ? evsel->exclude_GH : 0; 1805 int weak = 0; 1806 1807 memset(mod, 0, sizeof(*mod)); 1808 1809 while (*str) { 1810 if (*str == 'u') { 1811 if (!exclude) 1812 exclude = eu = ek = eh = 1; 1813 if (!exclude_GH && !perf_guest) 1814 eG = 1; 1815 eu = 0; 1816 } else if (*str == 'k') { 1817 if (!exclude) 1818 exclude = eu = ek = eh = 1; 1819 ek = 0; 1820 } else if (*str == 'h') { 1821 if (!exclude) 1822 exclude = eu = ek = eh = 1; 1823 eh = 0; 1824 } else if (*str == 'G') { 1825 if (!exclude_GH) 1826 exclude_GH = eG = eH = 1; 1827 eG = 0; 1828 } else if (*str == 'H') { 1829 if (!exclude_GH) 1830 exclude_GH = eG = eH = 1; 1831 eH = 0; 1832 } else if (*str == 'I') { 1833 eI = 1; 1834 } else if (*str == 'p') { 1835 precise++; 1836 /* use of precise requires exclude_guest */ 1837 if (!exclude_GH) 1838 eG = 1; 1839 } else if (*str == 'P') { 1840 precise_max = 1; 1841 } else if (*str == 'S') { 1842 sample_read = 1; 1843 } else if (*str == 'D') { 1844 pinned = 1; 1845 } else if (*str == 'e') { 1846 exclusive = 1; 1847 } else if (*str == 'W') { 1848 weak = 1; 1849 } else 1850 break; 1851 1852 ++str; 1853 } 1854 1855 /* 1856 * precise ip: 1857 * 1858 * 0 - SAMPLE_IP can have arbitrary skid 1859 * 1 - SAMPLE_IP must have constant skid 1860 * 2 - SAMPLE_IP requested to have 0 skid 1861 * 3 - SAMPLE_IP must have 0 skid 1862 * 1863 * See also PERF_RECORD_MISC_EXACT_IP 1864 */ 1865 if (precise > 3) 1866 return -EINVAL; 1867 1868 mod->eu = eu; 1869 mod->ek = ek; 1870 mod->eh = eh; 1871 mod->eH = eH; 1872 mod->eG = eG; 1873 mod->eI = eI; 1874 mod->precise = precise; 1875 mod->precise_max = precise_max; 1876 mod->exclude_GH = exclude_GH; 1877 mod->sample_read = sample_read; 1878 mod->pinned = pinned; 1879 mod->weak = weak; 1880 mod->exclusive = exclusive; 1881 1882 return 0; 1883} 1884 1885/* 1886 * Basic modifier sanity check to validate it contains only one 1887 * instance of any modifier (apart from 'p') present. 1888 */ 1889static int check_modifier(char *str) 1890{ 1891 char *p = str; 1892 1893 /* The sizeof includes 0 byte as well. */ 1894 if (strlen(str) > (sizeof("ukhGHpppPSDIWe") - 1)) 1895 return -1; 1896 1897 while (*p) { 1898 if (*p != 'p' && strchr(p + 1, *p)) 1899 return -1; 1900 p++; 1901 } 1902 1903 return 0; 1904} 1905 1906int parse_events__modifier_event(struct list_head *list, char *str, bool add) 1907{ 1908 struct evsel *evsel; 1909 struct event_modifier mod; 1910 1911 if (str == NULL) 1912 return 0; 1913 1914 if (check_modifier(str)) 1915 return -EINVAL; 1916 1917 if (!add && get_event_modifier(&mod, str, NULL)) 1918 return -EINVAL; 1919 1920 __evlist__for_each_entry(list, evsel) { 1921 if (add && get_event_modifier(&mod, str, evsel)) 1922 return -EINVAL; 1923 1924 evsel->core.attr.exclude_user = mod.eu; 1925 evsel->core.attr.exclude_kernel = mod.ek; 1926 evsel->core.attr.exclude_hv = mod.eh; 1927 evsel->core.attr.precise_ip = mod.precise; 1928 evsel->core.attr.exclude_host = mod.eH; 1929 evsel->core.attr.exclude_guest = mod.eG; 1930 evsel->core.attr.exclude_idle = mod.eI; 1931 evsel->exclude_GH = mod.exclude_GH; 1932 evsel->sample_read = mod.sample_read; 1933 evsel->precise_max = mod.precise_max; 1934 evsel->weak_group = mod.weak; 1935 1936 if (evsel__is_group_leader(evsel)) { 1937 evsel->core.attr.pinned = mod.pinned; 1938 evsel->core.attr.exclusive = mod.exclusive; 1939 } 1940 } 1941 1942 return 0; 1943} 1944 1945int parse_events_name(struct list_head *list, char *name) 1946{ 1947 struct evsel *evsel; 1948 1949 __evlist__for_each_entry(list, evsel) { 1950 if (!evsel->name) 1951 evsel->name = strdup(name); 1952 } 1953 1954 return 0; 1955} 1956 1957static int 1958comp_pmu(const void *p1, const void *p2) 1959{ 1960 struct perf_pmu_event_symbol *pmu1 = (struct perf_pmu_event_symbol *) p1; 1961 struct perf_pmu_event_symbol *pmu2 = (struct perf_pmu_event_symbol *) p2; 1962 1963 return strcasecmp(pmu1->symbol, pmu2->symbol); 1964} 1965 1966static void perf_pmu__parse_cleanup(void) 1967{ 1968 if (perf_pmu_events_list_num > 0) { 1969 struct perf_pmu_event_symbol *p; 1970 int i; 1971 1972 for (i = 0; i < perf_pmu_events_list_num; i++) { 1973 p = perf_pmu_events_list + i; 1974 zfree(&p->symbol); 1975 } 1976 zfree(&perf_pmu_events_list); 1977 perf_pmu_events_list_num = 0; 1978 } 1979} 1980 1981#define SET_SYMBOL(str, stype) \ 1982do { \ 1983 p->symbol = str; \ 1984 if (!p->symbol) \ 1985 goto err; \ 1986 p->type = stype; \ 1987} while (0) 1988 1989/* 1990 * Read the pmu events list from sysfs 1991 * Save it into perf_pmu_events_list 1992 */ 1993static void perf_pmu__parse_init(void) 1994{ 1995 1996 struct perf_pmu *pmu = NULL; 1997 struct perf_pmu_alias *alias; 1998 int len = 0; 1999 2000 pmu = NULL; 2001 while ((pmu = perf_pmu__scan(pmu)) != NULL) { 2002 list_for_each_entry(alias, &pmu->aliases, list) { 2003 if (strchr(alias->name, '-')) 2004 len++; 2005 len++; 2006 } 2007 } 2008 2009 if (len == 0) { 2010 perf_pmu_events_list_num = -1; 2011 return; 2012 } 2013 perf_pmu_events_list = malloc(sizeof(struct perf_pmu_event_symbol) * len); 2014 if (!perf_pmu_events_list) 2015 return; 2016 perf_pmu_events_list_num = len; 2017 2018 len = 0; 2019 pmu = NULL; 2020 while ((pmu = perf_pmu__scan(pmu)) != NULL) { 2021 list_for_each_entry(alias, &pmu->aliases, list) { 2022 struct perf_pmu_event_symbol *p = perf_pmu_events_list + len; 2023 char *tmp = strchr(alias->name, '-'); 2024 2025 if (tmp != NULL) { 2026 SET_SYMBOL(strndup(alias->name, tmp - alias->name), 2027 PMU_EVENT_SYMBOL_PREFIX); 2028 p++; 2029 SET_SYMBOL(strdup(++tmp), PMU_EVENT_SYMBOL_SUFFIX); 2030 len += 2; 2031 } else { 2032 SET_SYMBOL(strdup(alias->name), PMU_EVENT_SYMBOL); 2033 len++; 2034 } 2035 } 2036 } 2037 qsort(perf_pmu_events_list, len, 2038 sizeof(struct perf_pmu_event_symbol), comp_pmu); 2039 2040 return; 2041err: 2042 perf_pmu__parse_cleanup(); 2043} 2044 2045/* 2046 * This function injects special term in 2047 * perf_pmu_events_list so the test code 2048 * can check on this functionality. 2049 */ 2050int perf_pmu__test_parse_init(void) 2051{ 2052 struct perf_pmu_event_symbol *list; 2053 2054 list = malloc(sizeof(*list) * 1); 2055 if (!list) 2056 return -ENOMEM; 2057 2058 list->type = PMU_EVENT_SYMBOL; 2059 list->symbol = strdup("read"); 2060 2061 if (!list->symbol) { 2062 free(list); 2063 return -ENOMEM; 2064 } 2065 2066 perf_pmu_events_list = list; 2067 perf_pmu_events_list_num = 1; 2068 return 0; 2069} 2070 2071enum perf_pmu_event_symbol_type 2072perf_pmu__parse_check(const char *name) 2073{ 2074 struct perf_pmu_event_symbol p, *r; 2075 2076 /* scan kernel pmu events from sysfs if needed */ 2077 if (perf_pmu_events_list_num == 0) 2078 perf_pmu__parse_init(); 2079 /* 2080 * name "cpu" could be prefix of cpu-cycles or cpu// events. 2081 * cpu-cycles has been handled by hardcode. 2082 * So it must be cpu// events, not kernel pmu event. 2083 */ 2084 if ((perf_pmu_events_list_num <= 0) || !strcmp(name, "cpu")) 2085 return PMU_EVENT_SYMBOL_ERR; 2086 2087 p.symbol = strdup(name); 2088 r = bsearch(&p, perf_pmu_events_list, 2089 (size_t) perf_pmu_events_list_num, 2090 sizeof(struct perf_pmu_event_symbol), comp_pmu); 2091 zfree(&p.symbol); 2092 return r ? r->type : PMU_EVENT_SYMBOL_ERR; 2093} 2094 2095static int parse_events__scanner(const char *str, 2096 struct parse_events_state *parse_state) 2097{ 2098 YY_BUFFER_STATE buffer; 2099 void *scanner; 2100 int ret; 2101 2102 ret = parse_events_lex_init_extra(parse_state, &scanner); 2103 if (ret) 2104 return ret; 2105 2106 buffer = parse_events__scan_string(str, scanner); 2107 2108#ifdef PARSER_DEBUG 2109 parse_events_debug = 1; 2110 parse_events_set_debug(1, scanner); 2111#endif 2112 ret = parse_events_parse(parse_state, scanner); 2113 2114 parse_events__flush_buffer(buffer, scanner); 2115 parse_events__delete_buffer(buffer, scanner); 2116 parse_events_lex_destroy(scanner); 2117 return ret; 2118} 2119 2120/* 2121 * parse event config string, return a list of event terms. 2122 */ 2123int parse_events_terms(struct list_head *terms, const char *str) 2124{ 2125 struct parse_events_state parse_state = { 2126 .terms = NULL, 2127 .stoken = PE_START_TERMS, 2128 }; 2129 int ret; 2130 2131 ret = parse_events__scanner(str, &parse_state); 2132 perf_pmu__parse_cleanup(); 2133 2134 if (!ret) { 2135 list_splice(parse_state.terms, terms); 2136 zfree(&parse_state.terms); 2137 return 0; 2138 } 2139 2140 parse_events_terms__delete(parse_state.terms); 2141 return ret; 2142} 2143 2144int __parse_events(struct evlist *evlist, const char *str, 2145 struct parse_events_error *err, struct perf_pmu *fake_pmu) 2146{ 2147 struct parse_events_state parse_state = { 2148 .list = LIST_HEAD_INIT(parse_state.list), 2149 .idx = evlist->core.nr_entries, 2150 .error = err, 2151 .evlist = evlist, 2152 .stoken = PE_START_EVENTS, 2153 .fake_pmu = fake_pmu, 2154 }; 2155 int ret; 2156 2157 ret = parse_events__scanner(str, &parse_state); 2158 perf_pmu__parse_cleanup(); 2159 2160 if (!ret && list_empty(&parse_state.list)) { 2161 WARN_ONCE(true, "WARNING: event parser found nothing\n"); 2162 return -1; 2163 } 2164 2165 /* 2166 * Add list to the evlist even with errors to allow callers to clean up. 2167 */ 2168 perf_evlist__splice_list_tail(evlist, &parse_state.list); 2169 2170 if (!ret) { 2171 struct evsel *last; 2172 2173 evlist->nr_groups += parse_state.nr_groups; 2174 last = evlist__last(evlist); 2175 last->cmdline_group_boundary = true; 2176 2177 return 0; 2178 } 2179 2180 /* 2181 * There are 2 users - builtin-record and builtin-test objects. 2182 * Both call evlist__delete in case of error, so we dont 2183 * need to bother. 2184 */ 2185 return ret; 2186} 2187 2188#define MAX_WIDTH 1000 2189static int get_term_width(void) 2190{ 2191 struct winsize ws; 2192 2193 get_term_dimensions(&ws); 2194 return ws.ws_col > MAX_WIDTH ? MAX_WIDTH : ws.ws_col; 2195} 2196 2197static void __parse_events_print_error(int err_idx, const char *err_str, 2198 const char *err_help, const char *event) 2199{ 2200 const char *str = "invalid or unsupported event: "; 2201 char _buf[MAX_WIDTH]; 2202 char *buf = (char *) event; 2203 int idx = 0; 2204 if (err_str) { 2205 /* -2 for extra '' in the final fprintf */ 2206 int width = get_term_width() - 2; 2207 int len_event = strlen(event); 2208 int len_str, max_len, cut = 0; 2209 2210 /* 2211 * Maximum error index indent, we will cut 2212 * the event string if it's bigger. 2213 */ 2214 int max_err_idx = 13; 2215 2216 /* 2217 * Let's be specific with the message when 2218 * we have the precise error. 2219 */ 2220 str = "event syntax error: "; 2221 len_str = strlen(str); 2222 max_len = width - len_str; 2223 2224 buf = _buf; 2225 2226 /* We're cutting from the beginning. */ 2227 if (err_idx > max_err_idx) 2228 cut = err_idx - max_err_idx; 2229 2230 strncpy(buf, event + cut, max_len); 2231 2232 /* Mark cut parts with '..' on both sides. */ 2233 if (cut) 2234 buf[0] = buf[1] = '.'; 2235 2236 if ((len_event - cut) > max_len) { 2237 buf[max_len - 1] = buf[max_len - 2] = '.'; 2238 buf[max_len] = 0; 2239 } 2240 2241 idx = len_str + err_idx - cut; 2242 } 2243 2244 fprintf(stderr, "%s'%s'\n", str, buf); 2245 if (idx) { 2246 fprintf(stderr, "%*s\\___ %s\n", idx + 1, "", err_str); 2247 if (err_help) 2248 fprintf(stderr, "\n%s\n", err_help); 2249 } 2250} 2251 2252void parse_events_print_error(struct parse_events_error *err, 2253 const char *event) 2254{ 2255 if (!err->num_errors) 2256 return; 2257 2258 __parse_events_print_error(err->idx, err->str, err->help, event); 2259 zfree(&err->str); 2260 zfree(&err->help); 2261 2262 if (err->num_errors > 1) { 2263 fputs("\nInitial error:\n", stderr); 2264 __parse_events_print_error(err->first_idx, err->first_str, 2265 err->first_help, event); 2266 zfree(&err->first_str); 2267 zfree(&err->first_help); 2268 } 2269} 2270 2271#undef MAX_WIDTH 2272 2273int parse_events_option(const struct option *opt, const char *str, 2274 int unset __maybe_unused) 2275{ 2276 struct evlist *evlist = *(struct evlist **)opt->value; 2277 struct parse_events_error err; 2278 int ret; 2279 2280 bzero(&err, sizeof(err)); 2281 ret = parse_events(evlist, str, &err); 2282 2283 if (ret) { 2284 parse_events_print_error(&err, str); 2285 fprintf(stderr, "Run 'perf list' for a list of valid events\n"); 2286 } 2287 2288 return ret; 2289} 2290 2291int parse_events_option_new_evlist(const struct option *opt, const char *str, int unset) 2292{ 2293 struct evlist **evlistp = opt->value; 2294 int ret; 2295 2296 if (*evlistp == NULL) { 2297 *evlistp = evlist__new(); 2298 2299 if (*evlistp == NULL) { 2300 fprintf(stderr, "Not enough memory to create evlist\n"); 2301 return -1; 2302 } 2303 } 2304 2305 ret = parse_events_option(opt, str, unset); 2306 if (ret) { 2307 evlist__delete(*evlistp); 2308 *evlistp = NULL; 2309 } 2310 2311 return ret; 2312} 2313 2314static int 2315foreach_evsel_in_last_glob(struct evlist *evlist, 2316 int (*func)(struct evsel *evsel, 2317 const void *arg), 2318 const void *arg) 2319{ 2320 struct evsel *last = NULL; 2321 int err; 2322 2323 /* 2324 * Don't return when list_empty, give func a chance to report 2325 * error when it found last == NULL. 2326 * 2327 * So no need to WARN here, let *func do this. 2328 */ 2329 if (evlist->core.nr_entries > 0) 2330 last = evlist__last(evlist); 2331 2332 do { 2333 err = (*func)(last, arg); 2334 if (err) 2335 return -1; 2336 if (!last) 2337 return 0; 2338 2339 if (last->core.node.prev == &evlist->core.entries) 2340 return 0; 2341 last = list_entry(last->core.node.prev, struct evsel, core.node); 2342 } while (!last->cmdline_group_boundary); 2343 2344 return 0; 2345} 2346 2347static int set_filter(struct evsel *evsel, const void *arg) 2348{ 2349 const char *str = arg; 2350 bool found = false; 2351 int nr_addr_filters = 0; 2352 struct perf_pmu *pmu = NULL; 2353 2354 if (evsel == NULL) { 2355 fprintf(stderr, 2356 "--filter option should follow a -e tracepoint or HW tracer option\n"); 2357 return -1; 2358 } 2359 2360 if (evsel->core.attr.type == PERF_TYPE_TRACEPOINT) { 2361 if (evsel__append_tp_filter(evsel, str) < 0) { 2362 fprintf(stderr, 2363 "not enough memory to hold filter string\n"); 2364 return -1; 2365 } 2366 2367 return 0; 2368 } 2369 2370 while ((pmu = perf_pmu__scan(pmu)) != NULL) 2371 if (pmu->type == evsel->core.attr.type) { 2372 found = true; 2373 break; 2374 } 2375 2376 if (found) 2377 perf_pmu__scan_file(pmu, "nr_addr_filters", 2378 "%d", &nr_addr_filters); 2379 2380 if (!nr_addr_filters) { 2381 fprintf(stderr, 2382 "This CPU does not support address filtering\n"); 2383 return -1; 2384 } 2385 2386 if (evsel__append_addr_filter(evsel, str) < 0) { 2387 fprintf(stderr, 2388 "not enough memory to hold filter string\n"); 2389 return -1; 2390 } 2391 2392 return 0; 2393} 2394 2395int parse_filter(const struct option *opt, const char *str, 2396 int unset __maybe_unused) 2397{ 2398 struct evlist *evlist = *(struct evlist **)opt->value; 2399 2400 return foreach_evsel_in_last_glob(evlist, set_filter, 2401 (const void *)str); 2402} 2403 2404static int add_exclude_perf_filter(struct evsel *evsel, 2405 const void *arg __maybe_unused) 2406{ 2407 char new_filter[64]; 2408 2409 if (evsel == NULL || evsel->core.attr.type != PERF_TYPE_TRACEPOINT) { 2410 fprintf(stderr, 2411 "--exclude-perf option should follow a -e tracepoint option\n"); 2412 return -1; 2413 } 2414 2415 snprintf(new_filter, sizeof(new_filter), "common_pid != %d", getpid()); 2416 2417 if (evsel__append_tp_filter(evsel, new_filter) < 0) { 2418 fprintf(stderr, 2419 "not enough memory to hold filter string\n"); 2420 return -1; 2421 } 2422 2423 return 0; 2424} 2425 2426int exclude_perf(const struct option *opt, 2427 const char *arg __maybe_unused, 2428 int unset __maybe_unused) 2429{ 2430 struct evlist *evlist = *(struct evlist **)opt->value; 2431 2432 return foreach_evsel_in_last_glob(evlist, add_exclude_perf_filter, 2433 NULL); 2434} 2435 2436static const char * const event_type_descriptors[] = { 2437 "Hardware event", 2438 "Software event", 2439 "Tracepoint event", 2440 "Hardware cache event", 2441 "Raw hardware event descriptor", 2442 "Hardware breakpoint", 2443}; 2444 2445static int cmp_string(const void *a, const void *b) 2446{ 2447 const char * const *as = a; 2448 const char * const *bs = b; 2449 2450 return strcmp(*as, *bs); 2451} 2452 2453/* 2454 * Print the events from <debugfs_mount_point>/tracing/events 2455 */ 2456 2457void print_tracepoint_events(const char *subsys_glob, const char *event_glob, 2458 bool name_only) 2459{ 2460 DIR *sys_dir, *evt_dir; 2461 struct dirent *sys_dirent, *evt_dirent; 2462 char evt_path[MAXPATHLEN]; 2463 char *dir_path; 2464 char **evt_list = NULL; 2465 unsigned int evt_i = 0, evt_num = 0; 2466 bool evt_num_known = false; 2467 2468restart: 2469 sys_dir = tracing_events__opendir(); 2470 if (!sys_dir) 2471 return; 2472 2473 if (evt_num_known) { 2474 evt_list = zalloc(sizeof(char *) * evt_num); 2475 if (!evt_list) 2476 goto out_close_sys_dir; 2477 } 2478 2479 for_each_subsystem(sys_dir, sys_dirent) { 2480 if (subsys_glob != NULL && 2481 !strglobmatch(sys_dirent->d_name, subsys_glob)) 2482 continue; 2483 2484 dir_path = get_events_file(sys_dirent->d_name); 2485 if (!dir_path) 2486 continue; 2487 evt_dir = opendir(dir_path); 2488 if (!evt_dir) 2489 goto next; 2490 2491 for_each_event(dir_path, evt_dir, evt_dirent) { 2492 if (event_glob != NULL && 2493 !strglobmatch(evt_dirent->d_name, event_glob)) 2494 continue; 2495 2496 if (!evt_num_known) { 2497 evt_num++; 2498 continue; 2499 } 2500 2501 snprintf(evt_path, MAXPATHLEN, "%s:%s", 2502 sys_dirent->d_name, evt_dirent->d_name); 2503 2504 evt_list[evt_i] = strdup(evt_path); 2505 if (evt_list[evt_i] == NULL) { 2506 put_events_file(dir_path); 2507 goto out_close_evt_dir; 2508 } 2509 evt_i++; 2510 } 2511 closedir(evt_dir); 2512next: 2513 put_events_file(dir_path); 2514 } 2515 closedir(sys_dir); 2516 2517 if (!evt_num_known) { 2518 evt_num_known = true; 2519 goto restart; 2520 } 2521 qsort(evt_list, evt_num, sizeof(char *), cmp_string); 2522 evt_i = 0; 2523 while (evt_i < evt_num) { 2524 if (name_only) { 2525 printf("%s ", evt_list[evt_i++]); 2526 continue; 2527 } 2528 printf(" %-50s [%s]\n", evt_list[evt_i++], 2529 event_type_descriptors[PERF_TYPE_TRACEPOINT]); 2530 } 2531 if (evt_num && pager_in_use()) 2532 printf("\n"); 2533 2534out_free: 2535 evt_num = evt_i; 2536 for (evt_i = 0; evt_i < evt_num; evt_i++) 2537 zfree(&evt_list[evt_i]); 2538 zfree(&evt_list); 2539 return; 2540 2541out_close_evt_dir: 2542 closedir(evt_dir); 2543out_close_sys_dir: 2544 closedir(sys_dir); 2545 2546 printf("FATAL: not enough memory to print %s\n", 2547 event_type_descriptors[PERF_TYPE_TRACEPOINT]); 2548 if (evt_list) 2549 goto out_free; 2550} 2551 2552/* 2553 * Check whether event is in <debugfs_mount_point>/tracing/events 2554 */ 2555 2556int is_valid_tracepoint(const char *event_string) 2557{ 2558 DIR *sys_dir, *evt_dir; 2559 struct dirent *sys_dirent, *evt_dirent; 2560 char evt_path[MAXPATHLEN]; 2561 char *dir_path; 2562 2563 sys_dir = tracing_events__opendir(); 2564 if (!sys_dir) 2565 return 0; 2566 2567 for_each_subsystem(sys_dir, sys_dirent) { 2568 dir_path = get_events_file(sys_dirent->d_name); 2569 if (!dir_path) 2570 continue; 2571 evt_dir = opendir(dir_path); 2572 if (!evt_dir) 2573 goto next; 2574 2575 for_each_event(dir_path, evt_dir, evt_dirent) { 2576 snprintf(evt_path, MAXPATHLEN, "%s:%s", 2577 sys_dirent->d_name, evt_dirent->d_name); 2578 if (!strcmp(evt_path, event_string)) { 2579 closedir(evt_dir); 2580 closedir(sys_dir); 2581 return 1; 2582 } 2583 } 2584 closedir(evt_dir); 2585next: 2586 put_events_file(dir_path); 2587 } 2588 closedir(sys_dir); 2589 return 0; 2590} 2591 2592static bool is_event_supported(u8 type, unsigned config) 2593{ 2594 bool ret = true; 2595 int open_return; 2596 struct evsel *evsel; 2597 struct perf_event_attr attr = { 2598 .type = type, 2599 .config = config, 2600 .disabled = 1, 2601 }; 2602 struct perf_thread_map *tmap = thread_map__new_by_tid(0); 2603 2604 if (tmap == NULL) 2605 return false; 2606 2607 evsel = evsel__new(&attr); 2608 if (evsel) { 2609 open_return = evsel__open(evsel, NULL, tmap); 2610 ret = open_return >= 0; 2611 2612 if (open_return == -EACCES) { 2613 /* 2614 * This happens if the paranoid value 2615 * /proc/sys/kernel/perf_event_paranoid is set to 2 2616 * Re-run with exclude_kernel set; we don't do that 2617 * by default as some ARM machines do not support it. 2618 * 2619 */ 2620 evsel->core.attr.exclude_kernel = 1; 2621 ret = evsel__open(evsel, NULL, tmap) >= 0; 2622 } 2623 evsel__delete(evsel); 2624 } 2625 2626 perf_thread_map__put(tmap); 2627 return ret; 2628} 2629 2630void print_sdt_events(const char *subsys_glob, const char *event_glob, 2631 bool name_only) 2632{ 2633 struct probe_cache *pcache; 2634 struct probe_cache_entry *ent; 2635 struct strlist *bidlist, *sdtlist; 2636 struct strlist_config cfg = {.dont_dupstr = true}; 2637 struct str_node *nd, *nd2; 2638 char *buf, *path, *ptr = NULL; 2639 bool show_detail = false; 2640 int ret; 2641 2642 sdtlist = strlist__new(NULL, &cfg); 2643 if (!sdtlist) { 2644 pr_debug("Failed to allocate new strlist for SDT\n"); 2645 return; 2646 } 2647 bidlist = build_id_cache__list_all(true); 2648 if (!bidlist) { 2649 pr_debug("Failed to get buildids: %d\n", errno); 2650 return; 2651 } 2652 strlist__for_each_entry(nd, bidlist) { 2653 pcache = probe_cache__new(nd->s, NULL); 2654 if (!pcache) 2655 continue; 2656 list_for_each_entry(ent, &pcache->entries, node) { 2657 if (!ent->sdt) 2658 continue; 2659 if (subsys_glob && 2660 !strglobmatch(ent->pev.group, subsys_glob)) 2661 continue; 2662 if (event_glob && 2663 !strglobmatch(ent->pev.event, event_glob)) 2664 continue; 2665 ret = asprintf(&buf, "%s:%s@%s", ent->pev.group, 2666 ent->pev.event, nd->s); 2667 if (ret > 0) 2668 strlist__add(sdtlist, buf); 2669 } 2670 probe_cache__delete(pcache); 2671 } 2672 strlist__delete(bidlist); 2673 2674 strlist__for_each_entry(nd, sdtlist) { 2675 buf = strchr(nd->s, '@'); 2676 if (buf) 2677 *(buf++) = '\0'; 2678 if (name_only) { 2679 printf("%s ", nd->s); 2680 continue; 2681 } 2682 nd2 = strlist__next(nd); 2683 if (nd2) { 2684 ptr = strchr(nd2->s, '@'); 2685 if (ptr) 2686 *ptr = '\0'; 2687 if (strcmp(nd->s, nd2->s) == 0) 2688 show_detail = true; 2689 } 2690 if (show_detail) { 2691 path = build_id_cache__origname(buf); 2692 ret = asprintf(&buf, "%s@%s(%.12s)", nd->s, path, buf); 2693 if (ret > 0) { 2694 printf(" %-50s [%s]\n", buf, "SDT event"); 2695 free(buf); 2696 } 2697 free(path); 2698 } else 2699 printf(" %-50s [%s]\n", nd->s, "SDT event"); 2700 if (nd2) { 2701 if (strcmp(nd->s, nd2->s) != 0) 2702 show_detail = false; 2703 if (ptr) 2704 *ptr = '@'; 2705 } 2706 } 2707 strlist__delete(sdtlist); 2708} 2709 2710int print_hwcache_events(const char *event_glob, bool name_only) 2711{ 2712 unsigned int type, op, i, evt_i = 0, evt_num = 0; 2713 char name[64]; 2714 char **evt_list = NULL; 2715 bool evt_num_known = false; 2716 2717restart: 2718 if (evt_num_known) { 2719 evt_list = zalloc(sizeof(char *) * evt_num); 2720 if (!evt_list) 2721 goto out_enomem; 2722 } 2723 2724 for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) { 2725 for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) { 2726 /* skip invalid cache type */ 2727 if (!evsel__is_cache_op_valid(type, op)) 2728 continue; 2729 2730 for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) { 2731 __evsel__hw_cache_type_op_res_name(type, op, i, name, sizeof(name)); 2732 if (event_glob != NULL && !strglobmatch(name, event_glob)) 2733 continue; 2734 2735 if (!is_event_supported(PERF_TYPE_HW_CACHE, 2736 type | (op << 8) | (i << 16))) 2737 continue; 2738 2739 if (!evt_num_known) { 2740 evt_num++; 2741 continue; 2742 } 2743 2744 evt_list[evt_i] = strdup(name); 2745 if (evt_list[evt_i] == NULL) 2746 goto out_enomem; 2747 evt_i++; 2748 } 2749 } 2750 } 2751 2752 if (!evt_num_known) { 2753 evt_num_known = true; 2754 goto restart; 2755 } 2756 qsort(evt_list, evt_num, sizeof(char *), cmp_string); 2757 evt_i = 0; 2758 while (evt_i < evt_num) { 2759 if (name_only) { 2760 printf("%s ", evt_list[evt_i++]); 2761 continue; 2762 } 2763 printf(" %-50s [%s]\n", evt_list[evt_i++], 2764 event_type_descriptors[PERF_TYPE_HW_CACHE]); 2765 } 2766 if (evt_num && pager_in_use()) 2767 printf("\n"); 2768 2769out_free: 2770 evt_num = evt_i; 2771 for (evt_i = 0; evt_i < evt_num; evt_i++) 2772 zfree(&evt_list[evt_i]); 2773 zfree(&evt_list); 2774 return evt_num; 2775 2776out_enomem: 2777 printf("FATAL: not enough memory to print %s\n", event_type_descriptors[PERF_TYPE_HW_CACHE]); 2778 if (evt_list) 2779 goto out_free; 2780 return evt_num; 2781} 2782 2783static void print_tool_event(const char *name, const char *event_glob, 2784 bool name_only) 2785{ 2786 if (event_glob && !strglobmatch(name, event_glob)) 2787 return; 2788 if (name_only) 2789 printf("%s ", name); 2790 else 2791 printf(" %-50s [%s]\n", name, "Tool event"); 2792 2793} 2794 2795void print_tool_events(const char *event_glob, bool name_only) 2796{ 2797 print_tool_event("duration_time", event_glob, name_only); 2798 if (pager_in_use()) 2799 printf("\n"); 2800} 2801 2802void print_symbol_events(const char *event_glob, unsigned type, 2803 struct event_symbol *syms, unsigned max, 2804 bool name_only) 2805{ 2806 unsigned int i, evt_i = 0, evt_num = 0; 2807 char name[MAX_NAME_LEN]; 2808 char **evt_list = NULL; 2809 bool evt_num_known = false; 2810 2811restart: 2812 if (evt_num_known) { 2813 evt_list = zalloc(sizeof(char *) * evt_num); 2814 if (!evt_list) 2815 goto out_enomem; 2816 syms -= max; 2817 } 2818 2819 for (i = 0; i < max; i++, syms++) { 2820 /* 2821 * New attr.config still not supported here, the latest 2822 * example was PERF_COUNT_SW_CGROUP_SWITCHES 2823 */ 2824 if (syms->symbol == NULL) 2825 continue; 2826 2827 if (event_glob != NULL && !(strglobmatch(syms->symbol, event_glob) || 2828 (syms->alias && strglobmatch(syms->alias, event_glob)))) 2829 continue; 2830 2831 if (!is_event_supported(type, i)) 2832 continue; 2833 2834 if (!evt_num_known) { 2835 evt_num++; 2836 continue; 2837 } 2838 2839 if (!name_only && strlen(syms->alias)) 2840 snprintf(name, MAX_NAME_LEN, "%s OR %s", syms->symbol, syms->alias); 2841 else 2842 strlcpy(name, syms->symbol, MAX_NAME_LEN); 2843 2844 evt_list[evt_i] = strdup(name); 2845 if (evt_list[evt_i] == NULL) 2846 goto out_enomem; 2847 evt_i++; 2848 } 2849 2850 if (!evt_num_known) { 2851 evt_num_known = true; 2852 goto restart; 2853 } 2854 qsort(evt_list, evt_num, sizeof(char *), cmp_string); 2855 evt_i = 0; 2856 while (evt_i < evt_num) { 2857 if (name_only) { 2858 printf("%s ", evt_list[evt_i++]); 2859 continue; 2860 } 2861 printf(" %-50s [%s]\n", evt_list[evt_i++], event_type_descriptors[type]); 2862 } 2863 if (evt_num && pager_in_use()) 2864 printf("\n"); 2865 2866out_free: 2867 evt_num = evt_i; 2868 for (evt_i = 0; evt_i < evt_num; evt_i++) 2869 zfree(&evt_list[evt_i]); 2870 zfree(&evt_list); 2871 return; 2872 2873out_enomem: 2874 printf("FATAL: not enough memory to print %s\n", event_type_descriptors[type]); 2875 if (evt_list) 2876 goto out_free; 2877} 2878 2879/* 2880 * Print the help text for the event symbols: 2881 */ 2882void print_events(const char *event_glob, bool name_only, bool quiet_flag, 2883 bool long_desc, bool details_flag, bool deprecated) 2884{ 2885 print_symbol_events(event_glob, PERF_TYPE_HARDWARE, 2886 event_symbols_hw, PERF_COUNT_HW_MAX, name_only); 2887 2888 print_symbol_events(event_glob, PERF_TYPE_SOFTWARE, 2889 event_symbols_sw, PERF_COUNT_SW_MAX, name_only); 2890 print_tool_events(event_glob, name_only); 2891 2892 print_hwcache_events(event_glob, name_only); 2893 2894 print_pmu_events(event_glob, name_only, quiet_flag, long_desc, 2895 details_flag, deprecated); 2896 2897 if (event_glob != NULL) 2898 return; 2899 2900 if (!name_only) { 2901 printf(" %-50s [%s]\n", 2902 "rNNN", 2903 event_type_descriptors[PERF_TYPE_RAW]); 2904 printf(" %-50s [%s]\n", 2905 "cpu/t1=v1[,t2=v2,t3 ...]/modifier", 2906 event_type_descriptors[PERF_TYPE_RAW]); 2907 if (pager_in_use()) 2908 printf(" (see 'man perf-list' on how to encode it)\n\n"); 2909 2910 printf(" %-50s [%s]\n", 2911 "mem:<addr>[/len][:access]", 2912 event_type_descriptors[PERF_TYPE_BREAKPOINT]); 2913 if (pager_in_use()) 2914 printf("\n"); 2915 } 2916 2917 print_tracepoint_events(NULL, NULL, name_only); 2918 2919 print_sdt_events(NULL, NULL, name_only); 2920 2921 metricgroup__print(true, true, NULL, name_only, details_flag); 2922 2923 print_libpfm_events(name_only, long_desc); 2924} 2925 2926int parse_events__is_hardcoded_term(struct parse_events_term *term) 2927{ 2928 return term->type_term != PARSE_EVENTS__TERM_TYPE_USER; 2929} 2930 2931static int new_term(struct parse_events_term **_term, 2932 struct parse_events_term *temp, 2933 char *str, u64 num) 2934{ 2935 struct parse_events_term *term; 2936 2937 term = malloc(sizeof(*term)); 2938 if (!term) 2939 return -ENOMEM; 2940 2941 *term = *temp; 2942 INIT_LIST_HEAD(&term->list); 2943 term->weak = false; 2944 2945 switch (term->type_val) { 2946 case PARSE_EVENTS__TERM_TYPE_NUM: 2947 term->val.num = num; 2948 break; 2949 case PARSE_EVENTS__TERM_TYPE_STR: 2950 term->val.str = str; 2951 break; 2952 default: 2953 free(term); 2954 return -EINVAL; 2955 } 2956 2957 *_term = term; 2958 return 0; 2959} 2960 2961int parse_events_term__num(struct parse_events_term **term, 2962 int type_term, char *config, u64 num, 2963 bool no_value, 2964 void *loc_term_, void *loc_val_) 2965{ 2966 YYLTYPE *loc_term = loc_term_; 2967 YYLTYPE *loc_val = loc_val_; 2968 2969 struct parse_events_term temp = { 2970 .type_val = PARSE_EVENTS__TERM_TYPE_NUM, 2971 .type_term = type_term, 2972 .config = config, 2973 .no_value = no_value, 2974 .err_term = loc_term ? loc_term->first_column : 0, 2975 .err_val = loc_val ? loc_val->first_column : 0, 2976 }; 2977 2978 return new_term(term, &temp, NULL, num); 2979} 2980 2981int parse_events_term__str(struct parse_events_term **term, 2982 int type_term, char *config, char *str, 2983 void *loc_term_, void *loc_val_) 2984{ 2985 YYLTYPE *loc_term = loc_term_; 2986 YYLTYPE *loc_val = loc_val_; 2987 2988 struct parse_events_term temp = { 2989 .type_val = PARSE_EVENTS__TERM_TYPE_STR, 2990 .type_term = type_term, 2991 .config = config, 2992 .err_term = loc_term ? loc_term->first_column : 0, 2993 .err_val = loc_val ? loc_val->first_column : 0, 2994 }; 2995 2996 return new_term(term, &temp, str, 0); 2997} 2998 2999int parse_events_term__sym_hw(struct parse_events_term **term, 3000 char *config, unsigned idx) 3001{ 3002 struct event_symbol *sym; 3003 char *str; 3004 struct parse_events_term temp = { 3005 .type_val = PARSE_EVENTS__TERM_TYPE_STR, 3006 .type_term = PARSE_EVENTS__TERM_TYPE_USER, 3007 .config = config, 3008 }; 3009 3010 if (!temp.config) { 3011 temp.config = strdup("event"); 3012 if (!temp.config) 3013 return -ENOMEM; 3014 } 3015 BUG_ON(idx >= PERF_COUNT_HW_MAX); 3016 sym = &event_symbols_hw[idx]; 3017 3018 str = strdup(sym->symbol); 3019 if (!str) 3020 return -ENOMEM; 3021 return new_term(term, &temp, str, 0); 3022} 3023 3024int parse_events_term__clone(struct parse_events_term **new, 3025 struct parse_events_term *term) 3026{ 3027 char *str; 3028 struct parse_events_term temp = { 3029 .type_val = term->type_val, 3030 .type_term = term->type_term, 3031 .config = NULL, 3032 .err_term = term->err_term, 3033 .err_val = term->err_val, 3034 }; 3035 3036 if (term->config) { 3037 temp.config = strdup(term->config); 3038 if (!temp.config) 3039 return -ENOMEM; 3040 } 3041 if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) 3042 return new_term(new, &temp, NULL, term->val.num); 3043 3044 str = strdup(term->val.str); 3045 if (!str) 3046 return -ENOMEM; 3047 return new_term(new, &temp, str, 0); 3048} 3049 3050void parse_events_term__delete(struct parse_events_term *term) 3051{ 3052 if (term->array.nr_ranges) 3053 zfree(&term->array.ranges); 3054 3055 if (term->type_val != PARSE_EVENTS__TERM_TYPE_NUM) 3056 zfree(&term->val.str); 3057 3058 zfree(&term->config); 3059 free(term); 3060} 3061 3062int parse_events_copy_term_list(struct list_head *old, 3063 struct list_head **new) 3064{ 3065 struct parse_events_term *term, *n; 3066 int ret; 3067 3068 if (!old) { 3069 *new = NULL; 3070 return 0; 3071 } 3072 3073 *new = malloc(sizeof(struct list_head)); 3074 if (!*new) 3075 return -ENOMEM; 3076 INIT_LIST_HEAD(*new); 3077 3078 list_for_each_entry (term, old, list) { 3079 ret = parse_events_term__clone(&n, term); 3080 if (ret) 3081 return ret; 3082 list_add_tail(&n->list, *new); 3083 } 3084 return 0; 3085} 3086 3087void parse_events_terms__purge(struct list_head *terms) 3088{ 3089 struct parse_events_term *term, *h; 3090 3091 list_for_each_entry_safe(term, h, terms, list) { 3092 list_del_init(&term->list); 3093 parse_events_term__delete(term); 3094 } 3095} 3096 3097void parse_events_terms__delete(struct list_head *terms) 3098{ 3099 if (!terms) 3100 return; 3101 parse_events_terms__purge(terms); 3102 free(terms); 3103} 3104 3105void parse_events__clear_array(struct parse_events_array *a) 3106{ 3107 zfree(&a->ranges); 3108} 3109 3110void parse_events_evlist_error(struct parse_events_state *parse_state, 3111 int idx, const char *str) 3112{ 3113 if (!parse_state->error) 3114 return; 3115 3116 parse_events__handle_error(parse_state->error, idx, strdup(str), NULL); 3117} 3118 3119static void config_terms_list(char *buf, size_t buf_sz) 3120{ 3121 int i; 3122 bool first = true; 3123 3124 buf[0] = '\0'; 3125 for (i = 0; i < __PARSE_EVENTS__TERM_TYPE_NR; i++) { 3126 const char *name = config_term_names[i]; 3127 3128 if (!config_term_avail(i, NULL)) 3129 continue; 3130 if (!name) 3131 continue; 3132 if (name[0] == '<') 3133 continue; 3134 3135 if (strlen(buf) + strlen(name) + 2 >= buf_sz) 3136 return; 3137 3138 if (!first) 3139 strcat(buf, ","); 3140 else 3141 first = false; 3142 strcat(buf, name); 3143 } 3144} 3145 3146/* 3147 * Return string contains valid config terms of an event. 3148 * @additional_terms: For terms such as PMU sysfs terms. 3149 */ 3150char *parse_events_formats_error_string(char *additional_terms) 3151{ 3152 char *str; 3153 /* "no-overwrite" is the longest name */ 3154 char static_terms[__PARSE_EVENTS__TERM_TYPE_NR * 3155 (sizeof("no-overwrite") - 1)]; 3156 3157 config_terms_list(static_terms, sizeof(static_terms)); 3158 /* valid terms */ 3159 if (additional_terms) { 3160 if (asprintf(&str, "valid terms: %s,%s", 3161 additional_terms, static_terms) < 0) 3162 goto fail; 3163 } else { 3164 if (asprintf(&str, "valid terms: %s", static_terms) < 0) 3165 goto fail; 3166 } 3167 return str; 3168 3169fail: 3170 return NULL; 3171} 3172