1 // SPDX-License-Identifier: GPL-2.0 2 #include <linux/hw_breakpoint.h> 3 #include <linux/err.h> 4 #include <linux/list_sort.h> 5 #include <linux/zalloc.h> 6 #include <dirent.h> 7 #include <errno.h> 8 #include <sys/ioctl.h> 9 #include <sys/param.h> 10 #include "term.h" 11 #include "evlist.h" 12 #include "evsel.h" 13 #include <subcmd/parse-options.h> 14 #include "parse-events.h" 15 #include "string2.h" 16 #include "strbuf.h" 17 #include "debug.h" 18 #include <api/fs/tracing_path.h> 19 #include <perf/cpumap.h> 20 #include <util/parse-events-bison.h> 21 #include <util/parse-events-flex.h> 22 #include "pmu.h" 23 #include "pmus.h" 24 #include "asm/bug.h" 25 #include "util/parse-branch-options.h" 26 #include "util/evsel_config.h" 27 #include "util/event.h" 28 #include "util/bpf-filter.h" 29 #include "util/util.h" 30 #include "tracepoint.h" 31 32 #define MAX_NAME_LEN 100 33 34 #ifdef PARSER_DEBUG 35 extern int parse_events_debug; 36 #endif 37 static int get_config_terms(struct parse_events_terms *head_config, struct list_head *head_terms); 38 static int parse_events_terms__copy(const struct parse_events_terms *src, 39 struct parse_events_terms *dest); 40 41 struct event_symbol event_symbols_hw[PERF_COUNT_HW_MAX] = { 42 [PERF_COUNT_HW_CPU_CYCLES] = { 43 .symbol = "cpu-cycles", 44 .alias = "cycles", 45 }, 46 [PERF_COUNT_HW_INSTRUCTIONS] = { 47 .symbol = "instructions", 48 .alias = "", 49 }, 50 [PERF_COUNT_HW_CACHE_REFERENCES] = { 51 .symbol = "cache-references", 52 .alias = "", 53 }, 54 [PERF_COUNT_HW_CACHE_MISSES] = { 55 .symbol = "cache-misses", 56 .alias = "", 57 }, 58 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = { 59 .symbol = "branch-instructions", 60 .alias = "branches", 61 }, 62 [PERF_COUNT_HW_BRANCH_MISSES] = { 63 .symbol = "branch-misses", 64 .alias = "", 65 }, 66 [PERF_COUNT_HW_BUS_CYCLES] = { 67 .symbol = "bus-cycles", 68 .alias = "", 69 }, 70 [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = { 71 .symbol = "stalled-cycles-frontend", 72 .alias = "idle-cycles-frontend", 73 }, 74 [PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = { 75 .symbol = "stalled-cycles-backend", 76 .alias = "idle-cycles-backend", 77 }, 78 [PERF_COUNT_HW_REF_CPU_CYCLES] = { 79 .symbol = "ref-cycles", 80 .alias = "", 81 }, 82 }; 83 84 struct event_symbol event_symbols_sw[PERF_COUNT_SW_MAX] = { 85 [PERF_COUNT_SW_CPU_CLOCK] = { 86 .symbol = "cpu-clock", 87 .alias = "", 88 }, 89 [PERF_COUNT_SW_TASK_CLOCK] = { 90 .symbol = "task-clock", 91 .alias = "", 92 }, 93 [PERF_COUNT_SW_PAGE_FAULTS] = { 94 .symbol = "page-faults", 95 .alias = "faults", 96 }, 97 [PERF_COUNT_SW_CONTEXT_SWITCHES] = { 98 .symbol = "context-switches", 99 .alias = "cs", 100 }, 101 [PERF_COUNT_SW_CPU_MIGRATIONS] = { 102 .symbol = "cpu-migrations", 103 .alias = "migrations", 104 }, 105 [PERF_COUNT_SW_PAGE_FAULTS_MIN] = { 106 .symbol = "minor-faults", 107 .alias = "", 108 }, 109 [PERF_COUNT_SW_PAGE_FAULTS_MAJ] = { 110 .symbol = "major-faults", 111 .alias = "", 112 }, 113 [PERF_COUNT_SW_ALIGNMENT_FAULTS] = { 114 .symbol = "alignment-faults", 115 .alias = "", 116 }, 117 [PERF_COUNT_SW_EMULATION_FAULTS] = { 118 .symbol = "emulation-faults", 119 .alias = "", 120 }, 121 [PERF_COUNT_SW_DUMMY] = { 122 .symbol = "dummy", 123 .alias = "", 124 }, 125 [PERF_COUNT_SW_BPF_OUTPUT] = { 126 .symbol = "bpf-output", 127 .alias = "", 128 }, 129 [PERF_COUNT_SW_CGROUP_SWITCHES] = { 130 .symbol = "cgroup-switches", 131 .alias = "", 132 }, 133 }; 134 135 const char *event_type(int type) 136 { 137 switch (type) { 138 case PERF_TYPE_HARDWARE: 139 return "hardware"; 140 141 case PERF_TYPE_SOFTWARE: 142 return "software"; 143 144 case PERF_TYPE_TRACEPOINT: 145 return "tracepoint"; 146 147 case PERF_TYPE_HW_CACHE: 148 return "hardware-cache"; 149 150 default: 151 break; 152 } 153 154 return "unknown"; 155 } 156 157 static char *get_config_str(struct parse_events_terms *head_terms, 158 enum parse_events__term_type type_term) 159 { 160 struct parse_events_term *term; 161 162 if (!head_terms) 163 return NULL; 164 165 list_for_each_entry(term, &head_terms->terms, list) 166 if (term->type_term == type_term) 167 return term->val.str; 168 169 return NULL; 170 } 171 172 static char *get_config_metric_id(struct parse_events_terms *head_terms) 173 { 174 return get_config_str(head_terms, PARSE_EVENTS__TERM_TYPE_METRIC_ID); 175 } 176 177 static char *get_config_name(struct parse_events_terms *head_terms) 178 { 179 return get_config_str(head_terms, PARSE_EVENTS__TERM_TYPE_NAME); 180 } 181 182 /** 183 * fix_raw - For each raw term see if there is an event (aka alias) in pmu that 184 * matches the raw's string value. If the string value matches an 185 * event then change the term to be an event, if not then change it to 186 * be a config term. For example, "read" may be an event of the PMU or 187 * a raw hex encoding of 0xead. The fix-up is done late so the PMU of 188 * the event can be determined and we don't need to scan all PMUs 189 * ahead-of-time. 190 * @config_terms: the list of terms that may contain a raw term. 191 * @pmu: the PMU to scan for events from. 192 */ 193 static void fix_raw(struct parse_events_terms *config_terms, struct perf_pmu *pmu) 194 { 195 struct parse_events_term *term; 196 197 list_for_each_entry(term, &config_terms->terms, list) { 198 u64 num; 199 200 if (term->type_term != PARSE_EVENTS__TERM_TYPE_RAW) 201 continue; 202 203 if (perf_pmu__have_event(pmu, term->val.str)) { 204 zfree(&term->config); 205 term->config = term->val.str; 206 term->type_val = PARSE_EVENTS__TERM_TYPE_NUM; 207 term->type_term = PARSE_EVENTS__TERM_TYPE_USER; 208 term->val.num = 1; 209 term->no_value = true; 210 continue; 211 } 212 213 zfree(&term->config); 214 term->config = strdup("config"); 215 errno = 0; 216 num = strtoull(term->val.str + 1, NULL, 16); 217 assert(errno == 0); 218 free(term->val.str); 219 term->type_val = PARSE_EVENTS__TERM_TYPE_NUM; 220 term->type_term = PARSE_EVENTS__TERM_TYPE_CONFIG; 221 term->val.num = num; 222 term->no_value = false; 223 } 224 } 225 226 static struct evsel * 227 __add_event(struct list_head *list, int *idx, 228 struct perf_event_attr *attr, 229 bool init_attr, 230 const char *name, const char *metric_id, struct perf_pmu *pmu, 231 struct list_head *config_terms, bool auto_merge_stats, 232 const char *cpu_list) 233 { 234 struct evsel *evsel; 235 struct perf_cpu_map *cpus = pmu ? perf_cpu_map__get(pmu->cpus) : 236 cpu_list ? perf_cpu_map__new(cpu_list) : NULL; 237 238 if (pmu) 239 perf_pmu__warn_invalid_formats(pmu); 240 241 if (pmu && (attr->type == PERF_TYPE_RAW || attr->type >= PERF_TYPE_MAX)) { 242 perf_pmu__warn_invalid_config(pmu, attr->config, name, 243 PERF_PMU_FORMAT_VALUE_CONFIG, "config"); 244 perf_pmu__warn_invalid_config(pmu, attr->config1, name, 245 PERF_PMU_FORMAT_VALUE_CONFIG1, "config1"); 246 perf_pmu__warn_invalid_config(pmu, attr->config2, name, 247 PERF_PMU_FORMAT_VALUE_CONFIG2, "config2"); 248 perf_pmu__warn_invalid_config(pmu, attr->config3, name, 249 PERF_PMU_FORMAT_VALUE_CONFIG3, "config3"); 250 } 251 if (init_attr) 252 event_attr_init(attr); 253 254 evsel = evsel__new_idx(attr, *idx); 255 if (!evsel) { 256 perf_cpu_map__put(cpus); 257 return NULL; 258 } 259 260 (*idx)++; 261 evsel->core.cpus = cpus; 262 evsel->core.own_cpus = perf_cpu_map__get(cpus); 263 evsel->core.requires_cpu = pmu ? pmu->is_uncore : false; 264 evsel->core.is_pmu_core = pmu ? pmu->is_core : false; 265 evsel->auto_merge_stats = auto_merge_stats; 266 evsel->pmu = pmu; 267 evsel->pmu_name = pmu ? strdup(pmu->name) : NULL; 268 269 if (name) 270 evsel->name = strdup(name); 271 272 if (metric_id) 273 evsel->metric_id = strdup(metric_id); 274 275 if (config_terms) 276 list_splice_init(config_terms, &evsel->config_terms); 277 278 if (list) 279 list_add_tail(&evsel->core.node, list); 280 281 return evsel; 282 } 283 284 struct evsel *parse_events__add_event(int idx, struct perf_event_attr *attr, 285 const char *name, const char *metric_id, 286 struct perf_pmu *pmu) 287 { 288 return __add_event(/*list=*/NULL, &idx, attr, /*init_attr=*/false, name, 289 metric_id, pmu, /*config_terms=*/NULL, 290 /*auto_merge_stats=*/false, /*cpu_list=*/NULL); 291 } 292 293 static int add_event(struct list_head *list, int *idx, 294 struct perf_event_attr *attr, const char *name, 295 const char *metric_id, struct list_head *config_terms) 296 { 297 return __add_event(list, idx, attr, /*init_attr*/true, name, metric_id, 298 /*pmu=*/NULL, config_terms, 299 /*auto_merge_stats=*/false, /*cpu_list=*/NULL) ? 0 : -ENOMEM; 300 } 301 302 static int add_event_tool(struct list_head *list, int *idx, 303 enum perf_tool_event tool_event) 304 { 305 struct evsel *evsel; 306 struct perf_event_attr attr = { 307 .type = PERF_TYPE_SOFTWARE, 308 .config = PERF_COUNT_SW_DUMMY, 309 }; 310 311 evsel = __add_event(list, idx, &attr, /*init_attr=*/true, /*name=*/NULL, 312 /*metric_id=*/NULL, /*pmu=*/NULL, 313 /*config_terms=*/NULL, /*auto_merge_stats=*/false, 314 /*cpu_list=*/"0"); 315 if (!evsel) 316 return -ENOMEM; 317 evsel->tool_event = tool_event; 318 if (tool_event == PERF_TOOL_DURATION_TIME 319 || tool_event == PERF_TOOL_USER_TIME 320 || tool_event == PERF_TOOL_SYSTEM_TIME) { 321 free((char *)evsel->unit); 322 evsel->unit = strdup("ns"); 323 } 324 return 0; 325 } 326 327 /** 328 * parse_aliases - search names for entries beginning or equalling str ignoring 329 * case. If mutliple entries in names match str then the longest 330 * is chosen. 331 * @str: The needle to look for. 332 * @names: The haystack to search. 333 * @size: The size of the haystack. 334 * @longest: Out argument giving the length of the matching entry. 335 */ 336 static int parse_aliases(const char *str, const char *const names[][EVSEL__MAX_ALIASES], int size, 337 int *longest) 338 { 339 *longest = -1; 340 for (int i = 0; i < size; i++) { 341 for (int j = 0; j < EVSEL__MAX_ALIASES && names[i][j]; j++) { 342 int n = strlen(names[i][j]); 343 344 if (n > *longest && !strncasecmp(str, names[i][j], n)) 345 *longest = n; 346 } 347 if (*longest > 0) 348 return i; 349 } 350 351 return -1; 352 } 353 354 typedef int config_term_func_t(struct perf_event_attr *attr, 355 struct parse_events_term *term, 356 struct parse_events_error *err); 357 static int config_term_common(struct perf_event_attr *attr, 358 struct parse_events_term *term, 359 struct parse_events_error *err); 360 static int config_attr(struct perf_event_attr *attr, 361 struct parse_events_terms *head, 362 struct parse_events_error *err, 363 config_term_func_t config_term); 364 365 /** 366 * parse_events__decode_legacy_cache - Search name for the legacy cache event 367 * name composed of 1, 2 or 3 hyphen 368 * separated sections. The first section is 369 * the cache type while the others are the 370 * optional op and optional result. To make 371 * life hard the names in the table also 372 * contain hyphens and the longest name 373 * should always be selected. 374 */ 375 int parse_events__decode_legacy_cache(const char *name, int extended_pmu_type, __u64 *config) 376 { 377 int len, cache_type = -1, cache_op = -1, cache_result = -1; 378 const char *name_end = &name[strlen(name) + 1]; 379 const char *str = name; 380 381 cache_type = parse_aliases(str, evsel__hw_cache, PERF_COUNT_HW_CACHE_MAX, &len); 382 if (cache_type == -1) 383 return -EINVAL; 384 str += len + 1; 385 386 if (str < name_end) { 387 cache_op = parse_aliases(str, evsel__hw_cache_op, 388 PERF_COUNT_HW_CACHE_OP_MAX, &len); 389 if (cache_op >= 0) { 390 if (!evsel__is_cache_op_valid(cache_type, cache_op)) 391 return -EINVAL; 392 str += len + 1; 393 } else { 394 cache_result = parse_aliases(str, evsel__hw_cache_result, 395 PERF_COUNT_HW_CACHE_RESULT_MAX, &len); 396 if (cache_result >= 0) 397 str += len + 1; 398 } 399 } 400 if (str < name_end) { 401 if (cache_op < 0) { 402 cache_op = parse_aliases(str, evsel__hw_cache_op, 403 PERF_COUNT_HW_CACHE_OP_MAX, &len); 404 if (cache_op >= 0) { 405 if (!evsel__is_cache_op_valid(cache_type, cache_op)) 406 return -EINVAL; 407 } 408 } else if (cache_result < 0) { 409 cache_result = parse_aliases(str, evsel__hw_cache_result, 410 PERF_COUNT_HW_CACHE_RESULT_MAX, &len); 411 } 412 } 413 414 /* 415 * Fall back to reads: 416 */ 417 if (cache_op == -1) 418 cache_op = PERF_COUNT_HW_CACHE_OP_READ; 419 420 /* 421 * Fall back to accesses: 422 */ 423 if (cache_result == -1) 424 cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS; 425 426 *config = cache_type | (cache_op << 8) | (cache_result << 16); 427 if (perf_pmus__supports_extended_type()) 428 *config |= (__u64)extended_pmu_type << PERF_PMU_TYPE_SHIFT; 429 return 0; 430 } 431 432 /** 433 * parse_events__filter_pmu - returns false if a wildcard PMU should be 434 * considered, true if it should be filtered. 435 */ 436 bool parse_events__filter_pmu(const struct parse_events_state *parse_state, 437 const struct perf_pmu *pmu) 438 { 439 if (parse_state->pmu_filter == NULL) 440 return false; 441 442 return strcmp(parse_state->pmu_filter, pmu->name) != 0; 443 } 444 445 int parse_events_add_cache(struct list_head *list, int *idx, const char *name, 446 struct parse_events_state *parse_state, 447 struct parse_events_terms *head_config) 448 { 449 struct perf_pmu *pmu = NULL; 450 bool found_supported = false; 451 const char *config_name = get_config_name(head_config); 452 const char *metric_id = get_config_metric_id(head_config); 453 454 /* Legacy cache events are only supported by core PMUs. */ 455 while ((pmu = perf_pmus__scan_core(pmu)) != NULL) { 456 LIST_HEAD(config_terms); 457 struct perf_event_attr attr; 458 int ret; 459 460 if (parse_events__filter_pmu(parse_state, pmu)) 461 continue; 462 463 memset(&attr, 0, sizeof(attr)); 464 attr.type = PERF_TYPE_HW_CACHE; 465 466 ret = parse_events__decode_legacy_cache(name, pmu->type, &attr.config); 467 if (ret) 468 return ret; 469 470 found_supported = true; 471 472 if (head_config) { 473 if (config_attr(&attr, head_config, parse_state->error, config_term_common)) 474 return -EINVAL; 475 476 if (get_config_terms(head_config, &config_terms)) 477 return -ENOMEM; 478 } 479 480 if (__add_event(list, idx, &attr, /*init_attr*/true, config_name ?: name, 481 metric_id, pmu, &config_terms, /*auto_merge_stats=*/false, 482 /*cpu_list=*/NULL) == NULL) 483 return -ENOMEM; 484 485 free_config_terms(&config_terms); 486 } 487 return found_supported ? 0 : -EINVAL; 488 } 489 490 #ifdef HAVE_LIBTRACEEVENT 491 static void tracepoint_error(struct parse_events_error *e, int err, 492 const char *sys, const char *name, int column) 493 { 494 const char *str; 495 char help[BUFSIZ]; 496 497 if (!e) 498 return; 499 500 /* 501 * We get error directly from syscall errno ( > 0), 502 * or from encoded pointer's error ( < 0). 503 */ 504 err = abs(err); 505 506 switch (err) { 507 case EACCES: 508 str = "can't access trace events"; 509 break; 510 case ENOENT: 511 str = "unknown tracepoint"; 512 break; 513 default: 514 str = "failed to add tracepoint"; 515 break; 516 } 517 518 tracing_path__strerror_open_tp(err, help, sizeof(help), sys, name); 519 parse_events_error__handle(e, column, strdup(str), strdup(help)); 520 } 521 522 static int add_tracepoint(struct list_head *list, int *idx, 523 const char *sys_name, const char *evt_name, 524 struct parse_events_error *err, 525 struct parse_events_terms *head_config, void *loc_) 526 { 527 YYLTYPE *loc = loc_; 528 struct evsel *evsel = evsel__newtp_idx(sys_name, evt_name, (*idx)++); 529 530 if (IS_ERR(evsel)) { 531 tracepoint_error(err, PTR_ERR(evsel), sys_name, evt_name, loc->first_column); 532 return PTR_ERR(evsel); 533 } 534 535 if (head_config) { 536 LIST_HEAD(config_terms); 537 538 if (get_config_terms(head_config, &config_terms)) 539 return -ENOMEM; 540 list_splice(&config_terms, &evsel->config_terms); 541 } 542 543 list_add_tail(&evsel->core.node, list); 544 return 0; 545 } 546 547 static int add_tracepoint_multi_event(struct list_head *list, int *idx, 548 const char *sys_name, const char *evt_name, 549 struct parse_events_error *err, 550 struct parse_events_terms *head_config, YYLTYPE *loc) 551 { 552 char *evt_path; 553 struct dirent *evt_ent; 554 DIR *evt_dir; 555 int ret = 0, found = 0; 556 557 evt_path = get_events_file(sys_name); 558 if (!evt_path) { 559 tracepoint_error(err, errno, sys_name, evt_name, loc->first_column); 560 return -1; 561 } 562 evt_dir = opendir(evt_path); 563 if (!evt_dir) { 564 put_events_file(evt_path); 565 tracepoint_error(err, errno, sys_name, evt_name, loc->first_column); 566 return -1; 567 } 568 569 while (!ret && (evt_ent = readdir(evt_dir))) { 570 if (!strcmp(evt_ent->d_name, ".") 571 || !strcmp(evt_ent->d_name, "..") 572 || !strcmp(evt_ent->d_name, "enable") 573 || !strcmp(evt_ent->d_name, "filter")) 574 continue; 575 576 if (!strglobmatch(evt_ent->d_name, evt_name)) 577 continue; 578 579 found++; 580 581 ret = add_tracepoint(list, idx, sys_name, evt_ent->d_name, 582 err, head_config, loc); 583 } 584 585 if (!found) { 586 tracepoint_error(err, ENOENT, sys_name, evt_name, loc->first_column); 587 ret = -1; 588 } 589 590 put_events_file(evt_path); 591 closedir(evt_dir); 592 return ret; 593 } 594 595 static int add_tracepoint_event(struct list_head *list, int *idx, 596 const char *sys_name, const char *evt_name, 597 struct parse_events_error *err, 598 struct parse_events_terms *head_config, YYLTYPE *loc) 599 { 600 return strpbrk(evt_name, "*?") ? 601 add_tracepoint_multi_event(list, idx, sys_name, evt_name, 602 err, head_config, loc) : 603 add_tracepoint(list, idx, sys_name, evt_name, 604 err, head_config, loc); 605 } 606 607 static int add_tracepoint_multi_sys(struct list_head *list, int *idx, 608 const char *sys_name, const char *evt_name, 609 struct parse_events_error *err, 610 struct parse_events_terms *head_config, YYLTYPE *loc) 611 { 612 struct dirent *events_ent; 613 DIR *events_dir; 614 int ret = 0; 615 616 events_dir = tracing_events__opendir(); 617 if (!events_dir) { 618 tracepoint_error(err, errno, sys_name, evt_name, loc->first_column); 619 return -1; 620 } 621 622 while (!ret && (events_ent = readdir(events_dir))) { 623 if (!strcmp(events_ent->d_name, ".") 624 || !strcmp(events_ent->d_name, "..") 625 || !strcmp(events_ent->d_name, "enable") 626 || !strcmp(events_ent->d_name, "header_event") 627 || !strcmp(events_ent->d_name, "header_page")) 628 continue; 629 630 if (!strglobmatch(events_ent->d_name, sys_name)) 631 continue; 632 633 ret = add_tracepoint_event(list, idx, events_ent->d_name, 634 evt_name, err, head_config, loc); 635 } 636 637 closedir(events_dir); 638 return ret; 639 } 640 #endif /* HAVE_LIBTRACEEVENT */ 641 642 static int 643 parse_breakpoint_type(const char *type, struct perf_event_attr *attr) 644 { 645 int i; 646 647 for (i = 0; i < 3; i++) { 648 if (!type || !type[i]) 649 break; 650 651 #define CHECK_SET_TYPE(bit) \ 652 do { \ 653 if (attr->bp_type & bit) \ 654 return -EINVAL; \ 655 else \ 656 attr->bp_type |= bit; \ 657 } while (0) 658 659 switch (type[i]) { 660 case 'r': 661 CHECK_SET_TYPE(HW_BREAKPOINT_R); 662 break; 663 case 'w': 664 CHECK_SET_TYPE(HW_BREAKPOINT_W); 665 break; 666 case 'x': 667 CHECK_SET_TYPE(HW_BREAKPOINT_X); 668 break; 669 default: 670 return -EINVAL; 671 } 672 } 673 674 #undef CHECK_SET_TYPE 675 676 if (!attr->bp_type) /* Default */ 677 attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W; 678 679 return 0; 680 } 681 682 int parse_events_add_breakpoint(struct parse_events_state *parse_state, 683 struct list_head *list, 684 u64 addr, char *type, u64 len, 685 struct parse_events_terms *head_config) 686 { 687 struct perf_event_attr attr; 688 LIST_HEAD(config_terms); 689 const char *name; 690 691 memset(&attr, 0, sizeof(attr)); 692 attr.bp_addr = addr; 693 694 if (parse_breakpoint_type(type, &attr)) 695 return -EINVAL; 696 697 /* Provide some defaults if len is not specified */ 698 if (!len) { 699 if (attr.bp_type == HW_BREAKPOINT_X) 700 len = sizeof(long); 701 else 702 len = HW_BREAKPOINT_LEN_4; 703 } 704 705 attr.bp_len = len; 706 707 attr.type = PERF_TYPE_BREAKPOINT; 708 attr.sample_period = 1; 709 710 if (head_config) { 711 if (config_attr(&attr, head_config, parse_state->error, 712 config_term_common)) 713 return -EINVAL; 714 715 if (get_config_terms(head_config, &config_terms)) 716 return -ENOMEM; 717 } 718 719 name = get_config_name(head_config); 720 721 return add_event(list, &parse_state->idx, &attr, name, /*mertic_id=*/NULL, 722 &config_terms); 723 } 724 725 static int check_type_val(struct parse_events_term *term, 726 struct parse_events_error *err, 727 enum parse_events__term_val_type type) 728 { 729 if (type == term->type_val) 730 return 0; 731 732 if (err) { 733 parse_events_error__handle(err, term->err_val, 734 type == PARSE_EVENTS__TERM_TYPE_NUM 735 ? strdup("expected numeric value") 736 : strdup("expected string value"), 737 NULL); 738 } 739 return -EINVAL; 740 } 741 742 static bool config_term_shrinked; 743 744 static const char *config_term_name(enum parse_events__term_type term_type) 745 { 746 /* 747 * Update according to parse-events.l 748 */ 749 static const char *config_term_names[__PARSE_EVENTS__TERM_TYPE_NR] = { 750 [PARSE_EVENTS__TERM_TYPE_USER] = "<sysfs term>", 751 [PARSE_EVENTS__TERM_TYPE_CONFIG] = "config", 752 [PARSE_EVENTS__TERM_TYPE_CONFIG1] = "config1", 753 [PARSE_EVENTS__TERM_TYPE_CONFIG2] = "config2", 754 [PARSE_EVENTS__TERM_TYPE_CONFIG3] = "config3", 755 [PARSE_EVENTS__TERM_TYPE_NAME] = "name", 756 [PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD] = "period", 757 [PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ] = "freq", 758 [PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE] = "branch_type", 759 [PARSE_EVENTS__TERM_TYPE_TIME] = "time", 760 [PARSE_EVENTS__TERM_TYPE_CALLGRAPH] = "call-graph", 761 [PARSE_EVENTS__TERM_TYPE_STACKSIZE] = "stack-size", 762 [PARSE_EVENTS__TERM_TYPE_NOINHERIT] = "no-inherit", 763 [PARSE_EVENTS__TERM_TYPE_INHERIT] = "inherit", 764 [PARSE_EVENTS__TERM_TYPE_MAX_STACK] = "max-stack", 765 [PARSE_EVENTS__TERM_TYPE_MAX_EVENTS] = "nr", 766 [PARSE_EVENTS__TERM_TYPE_OVERWRITE] = "overwrite", 767 [PARSE_EVENTS__TERM_TYPE_NOOVERWRITE] = "no-overwrite", 768 [PARSE_EVENTS__TERM_TYPE_DRV_CFG] = "driver-config", 769 [PARSE_EVENTS__TERM_TYPE_PERCORE] = "percore", 770 [PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT] = "aux-output", 771 [PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE] = "aux-sample-size", 772 [PARSE_EVENTS__TERM_TYPE_METRIC_ID] = "metric-id", 773 [PARSE_EVENTS__TERM_TYPE_RAW] = "raw", 774 [PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE] = "legacy-cache", 775 [PARSE_EVENTS__TERM_TYPE_HARDWARE] = "hardware", 776 }; 777 if ((unsigned int)term_type >= __PARSE_EVENTS__TERM_TYPE_NR) 778 return "unknown term"; 779 780 return config_term_names[term_type]; 781 } 782 783 static bool 784 config_term_avail(enum parse_events__term_type term_type, struct parse_events_error *err) 785 { 786 char *err_str; 787 788 if (term_type < 0 || term_type >= __PARSE_EVENTS__TERM_TYPE_NR) { 789 parse_events_error__handle(err, -1, 790 strdup("Invalid term_type"), NULL); 791 return false; 792 } 793 if (!config_term_shrinked) 794 return true; 795 796 switch (term_type) { 797 case PARSE_EVENTS__TERM_TYPE_CONFIG: 798 case PARSE_EVENTS__TERM_TYPE_CONFIG1: 799 case PARSE_EVENTS__TERM_TYPE_CONFIG2: 800 case PARSE_EVENTS__TERM_TYPE_CONFIG3: 801 case PARSE_EVENTS__TERM_TYPE_NAME: 802 case PARSE_EVENTS__TERM_TYPE_METRIC_ID: 803 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD: 804 case PARSE_EVENTS__TERM_TYPE_PERCORE: 805 return true; 806 case PARSE_EVENTS__TERM_TYPE_USER: 807 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ: 808 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE: 809 case PARSE_EVENTS__TERM_TYPE_TIME: 810 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH: 811 case PARSE_EVENTS__TERM_TYPE_STACKSIZE: 812 case PARSE_EVENTS__TERM_TYPE_NOINHERIT: 813 case PARSE_EVENTS__TERM_TYPE_INHERIT: 814 case PARSE_EVENTS__TERM_TYPE_MAX_STACK: 815 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS: 816 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE: 817 case PARSE_EVENTS__TERM_TYPE_OVERWRITE: 818 case PARSE_EVENTS__TERM_TYPE_DRV_CFG: 819 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT: 820 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE: 821 case PARSE_EVENTS__TERM_TYPE_RAW: 822 case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE: 823 case PARSE_EVENTS__TERM_TYPE_HARDWARE: 824 default: 825 if (!err) 826 return false; 827 828 /* term_type is validated so indexing is safe */ 829 if (asprintf(&err_str, "'%s' is not usable in 'perf stat'", 830 config_term_name(term_type)) >= 0) 831 parse_events_error__handle(err, -1, err_str, NULL); 832 return false; 833 } 834 } 835 836 void parse_events__shrink_config_terms(void) 837 { 838 config_term_shrinked = true; 839 } 840 841 static int config_term_common(struct perf_event_attr *attr, 842 struct parse_events_term *term, 843 struct parse_events_error *err) 844 { 845 #define CHECK_TYPE_VAL(type) \ 846 do { \ 847 if (check_type_val(term, err, PARSE_EVENTS__TERM_TYPE_ ## type)) \ 848 return -EINVAL; \ 849 } while (0) 850 851 switch (term->type_term) { 852 case PARSE_EVENTS__TERM_TYPE_CONFIG: 853 CHECK_TYPE_VAL(NUM); 854 attr->config = term->val.num; 855 break; 856 case PARSE_EVENTS__TERM_TYPE_CONFIG1: 857 CHECK_TYPE_VAL(NUM); 858 attr->config1 = term->val.num; 859 break; 860 case PARSE_EVENTS__TERM_TYPE_CONFIG2: 861 CHECK_TYPE_VAL(NUM); 862 attr->config2 = term->val.num; 863 break; 864 case PARSE_EVENTS__TERM_TYPE_CONFIG3: 865 CHECK_TYPE_VAL(NUM); 866 attr->config3 = term->val.num; 867 break; 868 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD: 869 CHECK_TYPE_VAL(NUM); 870 break; 871 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ: 872 CHECK_TYPE_VAL(NUM); 873 break; 874 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE: 875 CHECK_TYPE_VAL(STR); 876 if (strcmp(term->val.str, "no") && 877 parse_branch_str(term->val.str, 878 &attr->branch_sample_type)) { 879 parse_events_error__handle(err, term->err_val, 880 strdup("invalid branch sample type"), 881 NULL); 882 return -EINVAL; 883 } 884 break; 885 case PARSE_EVENTS__TERM_TYPE_TIME: 886 CHECK_TYPE_VAL(NUM); 887 if (term->val.num > 1) { 888 parse_events_error__handle(err, term->err_val, 889 strdup("expected 0 or 1"), 890 NULL); 891 return -EINVAL; 892 } 893 break; 894 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH: 895 CHECK_TYPE_VAL(STR); 896 break; 897 case PARSE_EVENTS__TERM_TYPE_STACKSIZE: 898 CHECK_TYPE_VAL(NUM); 899 break; 900 case PARSE_EVENTS__TERM_TYPE_INHERIT: 901 CHECK_TYPE_VAL(NUM); 902 break; 903 case PARSE_EVENTS__TERM_TYPE_NOINHERIT: 904 CHECK_TYPE_VAL(NUM); 905 break; 906 case PARSE_EVENTS__TERM_TYPE_OVERWRITE: 907 CHECK_TYPE_VAL(NUM); 908 break; 909 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE: 910 CHECK_TYPE_VAL(NUM); 911 break; 912 case PARSE_EVENTS__TERM_TYPE_NAME: 913 CHECK_TYPE_VAL(STR); 914 break; 915 case PARSE_EVENTS__TERM_TYPE_METRIC_ID: 916 CHECK_TYPE_VAL(STR); 917 break; 918 case PARSE_EVENTS__TERM_TYPE_RAW: 919 CHECK_TYPE_VAL(STR); 920 break; 921 case PARSE_EVENTS__TERM_TYPE_MAX_STACK: 922 CHECK_TYPE_VAL(NUM); 923 break; 924 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS: 925 CHECK_TYPE_VAL(NUM); 926 break; 927 case PARSE_EVENTS__TERM_TYPE_PERCORE: 928 CHECK_TYPE_VAL(NUM); 929 if ((unsigned int)term->val.num > 1) { 930 parse_events_error__handle(err, term->err_val, 931 strdup("expected 0 or 1"), 932 NULL); 933 return -EINVAL; 934 } 935 break; 936 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT: 937 CHECK_TYPE_VAL(NUM); 938 break; 939 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE: 940 CHECK_TYPE_VAL(NUM); 941 if (term->val.num > UINT_MAX) { 942 parse_events_error__handle(err, term->err_val, 943 strdup("too big"), 944 NULL); 945 return -EINVAL; 946 } 947 break; 948 case PARSE_EVENTS__TERM_TYPE_DRV_CFG: 949 case PARSE_EVENTS__TERM_TYPE_USER: 950 case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE: 951 case PARSE_EVENTS__TERM_TYPE_HARDWARE: 952 default: 953 parse_events_error__handle(err, term->err_term, 954 strdup(config_term_name(term->type_term)), 955 parse_events_formats_error_string(NULL)); 956 return -EINVAL; 957 } 958 959 /* 960 * Check term availability after basic checking so 961 * PARSE_EVENTS__TERM_TYPE_USER can be found and filtered. 962 * 963 * If check availability at the entry of this function, 964 * user will see "'<sysfs term>' is not usable in 'perf stat'" 965 * if an invalid config term is provided for legacy events 966 * (for example, instructions/badterm/...), which is confusing. 967 */ 968 if (!config_term_avail(term->type_term, err)) 969 return -EINVAL; 970 return 0; 971 #undef CHECK_TYPE_VAL 972 } 973 974 static int config_term_pmu(struct perf_event_attr *attr, 975 struct parse_events_term *term, 976 struct parse_events_error *err) 977 { 978 if (term->type_term == PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE) { 979 const struct perf_pmu *pmu = perf_pmus__find_by_type(attr->type); 980 981 if (!pmu) { 982 char *err_str; 983 984 if (asprintf(&err_str, "Failed to find PMU for type %d", attr->type) >= 0) 985 parse_events_error__handle(err, term->err_term, 986 err_str, /*help=*/NULL); 987 return -EINVAL; 988 } 989 if (perf_pmu__supports_legacy_cache(pmu)) { 990 attr->type = PERF_TYPE_HW_CACHE; 991 return parse_events__decode_legacy_cache(term->config, pmu->type, 992 &attr->config); 993 } else 994 term->type_term = PARSE_EVENTS__TERM_TYPE_USER; 995 } 996 if (term->type_term == PARSE_EVENTS__TERM_TYPE_HARDWARE) { 997 const struct perf_pmu *pmu = perf_pmus__find_by_type(attr->type); 998 999 if (!pmu) { 1000 char *err_str; 1001 1002 if (asprintf(&err_str, "Failed to find PMU for type %d", attr->type) >= 0) 1003 parse_events_error__handle(err, term->err_term, 1004 err_str, /*help=*/NULL); 1005 return -EINVAL; 1006 } 1007 attr->type = PERF_TYPE_HARDWARE; 1008 attr->config = term->val.num; 1009 if (perf_pmus__supports_extended_type()) 1010 attr->config |= (__u64)pmu->type << PERF_PMU_TYPE_SHIFT; 1011 return 0; 1012 } 1013 if (term->type_term == PARSE_EVENTS__TERM_TYPE_USER || 1014 term->type_term == PARSE_EVENTS__TERM_TYPE_DRV_CFG) { 1015 /* 1016 * Always succeed for sysfs terms, as we dont know 1017 * at this point what type they need to have. 1018 */ 1019 return 0; 1020 } 1021 return config_term_common(attr, term, err); 1022 } 1023 1024 #ifdef HAVE_LIBTRACEEVENT 1025 static int config_term_tracepoint(struct perf_event_attr *attr, 1026 struct parse_events_term *term, 1027 struct parse_events_error *err) 1028 { 1029 switch (term->type_term) { 1030 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH: 1031 case PARSE_EVENTS__TERM_TYPE_STACKSIZE: 1032 case PARSE_EVENTS__TERM_TYPE_INHERIT: 1033 case PARSE_EVENTS__TERM_TYPE_NOINHERIT: 1034 case PARSE_EVENTS__TERM_TYPE_MAX_STACK: 1035 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS: 1036 case PARSE_EVENTS__TERM_TYPE_OVERWRITE: 1037 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE: 1038 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT: 1039 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE: 1040 return config_term_common(attr, term, err); 1041 case PARSE_EVENTS__TERM_TYPE_USER: 1042 case PARSE_EVENTS__TERM_TYPE_CONFIG: 1043 case PARSE_EVENTS__TERM_TYPE_CONFIG1: 1044 case PARSE_EVENTS__TERM_TYPE_CONFIG2: 1045 case PARSE_EVENTS__TERM_TYPE_CONFIG3: 1046 case PARSE_EVENTS__TERM_TYPE_NAME: 1047 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD: 1048 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ: 1049 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE: 1050 case PARSE_EVENTS__TERM_TYPE_TIME: 1051 case PARSE_EVENTS__TERM_TYPE_DRV_CFG: 1052 case PARSE_EVENTS__TERM_TYPE_PERCORE: 1053 case PARSE_EVENTS__TERM_TYPE_METRIC_ID: 1054 case PARSE_EVENTS__TERM_TYPE_RAW: 1055 case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE: 1056 case PARSE_EVENTS__TERM_TYPE_HARDWARE: 1057 default: 1058 if (err) { 1059 parse_events_error__handle(err, term->err_term, 1060 strdup(config_term_name(term->type_term)), 1061 strdup("valid terms: call-graph,stack-size\n")); 1062 } 1063 return -EINVAL; 1064 } 1065 1066 return 0; 1067 } 1068 #endif 1069 1070 static int config_attr(struct perf_event_attr *attr, 1071 struct parse_events_terms *head, 1072 struct parse_events_error *err, 1073 config_term_func_t config_term) 1074 { 1075 struct parse_events_term *term; 1076 1077 list_for_each_entry(term, &head->terms, list) 1078 if (config_term(attr, term, err)) 1079 return -EINVAL; 1080 1081 return 0; 1082 } 1083 1084 static int get_config_terms(struct parse_events_terms *head_config, struct list_head *head_terms) 1085 { 1086 #define ADD_CONFIG_TERM(__type, __weak) \ 1087 struct evsel_config_term *__t; \ 1088 \ 1089 __t = zalloc(sizeof(*__t)); \ 1090 if (!__t) \ 1091 return -ENOMEM; \ 1092 \ 1093 INIT_LIST_HEAD(&__t->list); \ 1094 __t->type = EVSEL__CONFIG_TERM_ ## __type; \ 1095 __t->weak = __weak; \ 1096 list_add_tail(&__t->list, head_terms) 1097 1098 #define ADD_CONFIG_TERM_VAL(__type, __name, __val, __weak) \ 1099 do { \ 1100 ADD_CONFIG_TERM(__type, __weak); \ 1101 __t->val.__name = __val; \ 1102 } while (0) 1103 1104 #define ADD_CONFIG_TERM_STR(__type, __val, __weak) \ 1105 do { \ 1106 ADD_CONFIG_TERM(__type, __weak); \ 1107 __t->val.str = strdup(__val); \ 1108 if (!__t->val.str) { \ 1109 zfree(&__t); \ 1110 return -ENOMEM; \ 1111 } \ 1112 __t->free_str = true; \ 1113 } while (0) 1114 1115 struct parse_events_term *term; 1116 1117 list_for_each_entry(term, &head_config->terms, list) { 1118 switch (term->type_term) { 1119 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD: 1120 ADD_CONFIG_TERM_VAL(PERIOD, period, term->val.num, term->weak); 1121 break; 1122 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ: 1123 ADD_CONFIG_TERM_VAL(FREQ, freq, term->val.num, term->weak); 1124 break; 1125 case PARSE_EVENTS__TERM_TYPE_TIME: 1126 ADD_CONFIG_TERM_VAL(TIME, time, term->val.num, term->weak); 1127 break; 1128 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH: 1129 ADD_CONFIG_TERM_STR(CALLGRAPH, term->val.str, term->weak); 1130 break; 1131 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE: 1132 ADD_CONFIG_TERM_STR(BRANCH, term->val.str, term->weak); 1133 break; 1134 case PARSE_EVENTS__TERM_TYPE_STACKSIZE: 1135 ADD_CONFIG_TERM_VAL(STACK_USER, stack_user, 1136 term->val.num, term->weak); 1137 break; 1138 case PARSE_EVENTS__TERM_TYPE_INHERIT: 1139 ADD_CONFIG_TERM_VAL(INHERIT, inherit, 1140 term->val.num ? 1 : 0, term->weak); 1141 break; 1142 case PARSE_EVENTS__TERM_TYPE_NOINHERIT: 1143 ADD_CONFIG_TERM_VAL(INHERIT, inherit, 1144 term->val.num ? 0 : 1, term->weak); 1145 break; 1146 case PARSE_EVENTS__TERM_TYPE_MAX_STACK: 1147 ADD_CONFIG_TERM_VAL(MAX_STACK, max_stack, 1148 term->val.num, term->weak); 1149 break; 1150 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS: 1151 ADD_CONFIG_TERM_VAL(MAX_EVENTS, max_events, 1152 term->val.num, term->weak); 1153 break; 1154 case PARSE_EVENTS__TERM_TYPE_OVERWRITE: 1155 ADD_CONFIG_TERM_VAL(OVERWRITE, overwrite, 1156 term->val.num ? 1 : 0, term->weak); 1157 break; 1158 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE: 1159 ADD_CONFIG_TERM_VAL(OVERWRITE, overwrite, 1160 term->val.num ? 0 : 1, term->weak); 1161 break; 1162 case PARSE_EVENTS__TERM_TYPE_DRV_CFG: 1163 ADD_CONFIG_TERM_STR(DRV_CFG, term->val.str, term->weak); 1164 break; 1165 case PARSE_EVENTS__TERM_TYPE_PERCORE: 1166 ADD_CONFIG_TERM_VAL(PERCORE, percore, 1167 term->val.num ? true : false, term->weak); 1168 break; 1169 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT: 1170 ADD_CONFIG_TERM_VAL(AUX_OUTPUT, aux_output, 1171 term->val.num ? 1 : 0, term->weak); 1172 break; 1173 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE: 1174 ADD_CONFIG_TERM_VAL(AUX_SAMPLE_SIZE, aux_sample_size, 1175 term->val.num, term->weak); 1176 break; 1177 case PARSE_EVENTS__TERM_TYPE_USER: 1178 case PARSE_EVENTS__TERM_TYPE_CONFIG: 1179 case PARSE_EVENTS__TERM_TYPE_CONFIG1: 1180 case PARSE_EVENTS__TERM_TYPE_CONFIG2: 1181 case PARSE_EVENTS__TERM_TYPE_CONFIG3: 1182 case PARSE_EVENTS__TERM_TYPE_NAME: 1183 case PARSE_EVENTS__TERM_TYPE_METRIC_ID: 1184 case PARSE_EVENTS__TERM_TYPE_RAW: 1185 case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE: 1186 case PARSE_EVENTS__TERM_TYPE_HARDWARE: 1187 default: 1188 break; 1189 } 1190 } 1191 return 0; 1192 } 1193 1194 /* 1195 * Add EVSEL__CONFIG_TERM_CFG_CHG where cfg_chg will have a bit set for 1196 * each bit of attr->config that the user has changed. 1197 */ 1198 static int get_config_chgs(struct perf_pmu *pmu, struct parse_events_terms *head_config, 1199 struct list_head *head_terms) 1200 { 1201 struct parse_events_term *term; 1202 u64 bits = 0; 1203 int type; 1204 1205 list_for_each_entry(term, &head_config->terms, list) { 1206 switch (term->type_term) { 1207 case PARSE_EVENTS__TERM_TYPE_USER: 1208 type = perf_pmu__format_type(pmu, term->config); 1209 if (type != PERF_PMU_FORMAT_VALUE_CONFIG) 1210 continue; 1211 bits |= perf_pmu__format_bits(pmu, term->config); 1212 break; 1213 case PARSE_EVENTS__TERM_TYPE_CONFIG: 1214 bits = ~(u64)0; 1215 break; 1216 case PARSE_EVENTS__TERM_TYPE_CONFIG1: 1217 case PARSE_EVENTS__TERM_TYPE_CONFIG2: 1218 case PARSE_EVENTS__TERM_TYPE_CONFIG3: 1219 case PARSE_EVENTS__TERM_TYPE_NAME: 1220 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD: 1221 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ: 1222 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE: 1223 case PARSE_EVENTS__TERM_TYPE_TIME: 1224 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH: 1225 case PARSE_EVENTS__TERM_TYPE_STACKSIZE: 1226 case PARSE_EVENTS__TERM_TYPE_NOINHERIT: 1227 case PARSE_EVENTS__TERM_TYPE_INHERIT: 1228 case PARSE_EVENTS__TERM_TYPE_MAX_STACK: 1229 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS: 1230 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE: 1231 case PARSE_EVENTS__TERM_TYPE_OVERWRITE: 1232 case PARSE_EVENTS__TERM_TYPE_DRV_CFG: 1233 case PARSE_EVENTS__TERM_TYPE_PERCORE: 1234 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT: 1235 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE: 1236 case PARSE_EVENTS__TERM_TYPE_METRIC_ID: 1237 case PARSE_EVENTS__TERM_TYPE_RAW: 1238 case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE: 1239 case PARSE_EVENTS__TERM_TYPE_HARDWARE: 1240 default: 1241 break; 1242 } 1243 } 1244 1245 if (bits) 1246 ADD_CONFIG_TERM_VAL(CFG_CHG, cfg_chg, bits, false); 1247 1248 #undef ADD_CONFIG_TERM 1249 return 0; 1250 } 1251 1252 int parse_events_add_tracepoint(struct list_head *list, int *idx, 1253 const char *sys, const char *event, 1254 struct parse_events_error *err, 1255 struct parse_events_terms *head_config, void *loc_) 1256 { 1257 YYLTYPE *loc = loc_; 1258 #ifdef HAVE_LIBTRACEEVENT 1259 if (head_config) { 1260 struct perf_event_attr attr; 1261 1262 if (config_attr(&attr, head_config, err, 1263 config_term_tracepoint)) 1264 return -EINVAL; 1265 } 1266 1267 if (strpbrk(sys, "*?")) 1268 return add_tracepoint_multi_sys(list, idx, sys, event, 1269 err, head_config, loc); 1270 else 1271 return add_tracepoint_event(list, idx, sys, event, 1272 err, head_config, loc); 1273 #else 1274 (void)list; 1275 (void)idx; 1276 (void)sys; 1277 (void)event; 1278 (void)head_config; 1279 parse_events_error__handle(err, loc->first_column, strdup("unsupported tracepoint"), 1280 strdup("libtraceevent is necessary for tracepoint support")); 1281 return -1; 1282 #endif 1283 } 1284 1285 static int __parse_events_add_numeric(struct parse_events_state *parse_state, 1286 struct list_head *list, 1287 struct perf_pmu *pmu, u32 type, u32 extended_type, 1288 u64 config, struct parse_events_terms *head_config) 1289 { 1290 struct perf_event_attr attr; 1291 LIST_HEAD(config_terms); 1292 const char *name, *metric_id; 1293 int ret; 1294 1295 memset(&attr, 0, sizeof(attr)); 1296 attr.type = type; 1297 attr.config = config; 1298 if (extended_type && (type == PERF_TYPE_HARDWARE || type == PERF_TYPE_HW_CACHE)) { 1299 assert(perf_pmus__supports_extended_type()); 1300 attr.config |= (u64)extended_type << PERF_PMU_TYPE_SHIFT; 1301 } 1302 1303 if (head_config) { 1304 if (config_attr(&attr, head_config, parse_state->error, 1305 config_term_common)) 1306 return -EINVAL; 1307 1308 if (get_config_terms(head_config, &config_terms)) 1309 return -ENOMEM; 1310 } 1311 1312 name = get_config_name(head_config); 1313 metric_id = get_config_metric_id(head_config); 1314 ret = __add_event(list, &parse_state->idx, &attr, /*init_attr*/true, name, 1315 metric_id, pmu, &config_terms, /*auto_merge_stats=*/false, 1316 /*cpu_list=*/NULL) ? 0 : -ENOMEM; 1317 free_config_terms(&config_terms); 1318 return ret; 1319 } 1320 1321 int parse_events_add_numeric(struct parse_events_state *parse_state, 1322 struct list_head *list, 1323 u32 type, u64 config, 1324 struct parse_events_terms *head_config, 1325 bool wildcard) 1326 { 1327 struct perf_pmu *pmu = NULL; 1328 bool found_supported = false; 1329 1330 /* Wildcards on numeric values are only supported by core PMUs. */ 1331 if (wildcard && perf_pmus__supports_extended_type()) { 1332 while ((pmu = perf_pmus__scan_core(pmu)) != NULL) { 1333 int ret; 1334 1335 found_supported = true; 1336 if (parse_events__filter_pmu(parse_state, pmu)) 1337 continue; 1338 1339 ret = __parse_events_add_numeric(parse_state, list, pmu, 1340 type, pmu->type, 1341 config, head_config); 1342 if (ret) 1343 return ret; 1344 } 1345 if (found_supported) 1346 return 0; 1347 } 1348 return __parse_events_add_numeric(parse_state, list, perf_pmus__find_by_type(type), 1349 type, /*extended_type=*/0, config, head_config); 1350 } 1351 1352 int parse_events_add_tool(struct parse_events_state *parse_state, 1353 struct list_head *list, 1354 int tool_event) 1355 { 1356 return add_event_tool(list, &parse_state->idx, tool_event); 1357 } 1358 1359 static bool config_term_percore(struct list_head *config_terms) 1360 { 1361 struct evsel_config_term *term; 1362 1363 list_for_each_entry(term, config_terms, list) { 1364 if (term->type == EVSEL__CONFIG_TERM_PERCORE) 1365 return term->val.percore; 1366 } 1367 1368 return false; 1369 } 1370 1371 int parse_events_add_pmu(struct parse_events_state *parse_state, 1372 struct list_head *list, const char *name, 1373 const struct parse_events_terms *const_parsed_terms, 1374 bool auto_merge_stats, void *loc_) 1375 { 1376 struct perf_event_attr attr; 1377 struct perf_pmu_info info; 1378 struct perf_pmu *pmu; 1379 struct evsel *evsel; 1380 struct parse_events_error *err = parse_state->error; 1381 YYLTYPE *loc = loc_; 1382 LIST_HEAD(config_terms); 1383 struct parse_events_terms parsed_terms; 1384 1385 pmu = parse_state->fake_pmu ?: perf_pmus__find(name); 1386 1387 if (!pmu) { 1388 char *err_str; 1389 1390 if (asprintf(&err_str, 1391 "Cannot find PMU `%s'. Missing kernel support?", 1392 name) >= 0) 1393 parse_events_error__handle(err, loc->first_column, err_str, NULL); 1394 return -EINVAL; 1395 } 1396 1397 parse_events_terms__init(&parsed_terms); 1398 if (const_parsed_terms) { 1399 int ret = parse_events_terms__copy(const_parsed_terms, &parsed_terms); 1400 1401 if (ret) 1402 return ret; 1403 } 1404 1405 if (verbose > 1) { 1406 struct strbuf sb; 1407 1408 strbuf_init(&sb, /*hint=*/ 0); 1409 if (pmu->selectable && list_empty(&parsed_terms.terms)) { 1410 strbuf_addf(&sb, "%s//", name); 1411 } else { 1412 strbuf_addf(&sb, "%s/", name); 1413 parse_events_terms__to_strbuf(&parsed_terms, &sb); 1414 strbuf_addch(&sb, '/'); 1415 } 1416 fprintf(stderr, "Attempt to add: %s\n", sb.buf); 1417 strbuf_release(&sb); 1418 } 1419 fix_raw(&parsed_terms, pmu); 1420 1421 memset(&attr, 0, sizeof(attr)); 1422 if (pmu->perf_event_attr_init_default) 1423 pmu->perf_event_attr_init_default(pmu, &attr); 1424 1425 attr.type = pmu->type; 1426 1427 if (list_empty(&parsed_terms.terms)) { 1428 evsel = __add_event(list, &parse_state->idx, &attr, 1429 /*init_attr=*/true, /*name=*/NULL, 1430 /*metric_id=*/NULL, pmu, 1431 /*config_terms=*/NULL, auto_merge_stats, 1432 /*cpu_list=*/NULL); 1433 return evsel ? 0 : -ENOMEM; 1434 } 1435 1436 if (!parse_state->fake_pmu && perf_pmu__check_alias(pmu, &parsed_terms, &info, err)) { 1437 parse_events_terms__exit(&parsed_terms); 1438 return -EINVAL; 1439 } 1440 1441 if (verbose > 1) { 1442 struct strbuf sb; 1443 1444 strbuf_init(&sb, /*hint=*/ 0); 1445 parse_events_terms__to_strbuf(&parsed_terms, &sb); 1446 fprintf(stderr, "..after resolving event: %s/%s/\n", name, sb.buf); 1447 strbuf_release(&sb); 1448 } 1449 1450 /* 1451 * Configure hardcoded terms first, no need to check 1452 * return value when called with fail == 0 ;) 1453 */ 1454 if (config_attr(&attr, &parsed_terms, parse_state->error, config_term_pmu)) { 1455 parse_events_terms__exit(&parsed_terms); 1456 return -EINVAL; 1457 } 1458 1459 if (get_config_terms(&parsed_terms, &config_terms)) { 1460 parse_events_terms__exit(&parsed_terms); 1461 return -ENOMEM; 1462 } 1463 1464 /* 1465 * When using default config, record which bits of attr->config were 1466 * changed by the user. 1467 */ 1468 if (pmu->perf_event_attr_init_default && 1469 get_config_chgs(pmu, &parsed_terms, &config_terms)) { 1470 parse_events_terms__exit(&parsed_terms); 1471 return -ENOMEM; 1472 } 1473 1474 if (!parse_state->fake_pmu && 1475 perf_pmu__config(pmu, &attr, &parsed_terms, parse_state->error)) { 1476 free_config_terms(&config_terms); 1477 parse_events_terms__exit(&parsed_terms); 1478 return -EINVAL; 1479 } 1480 1481 evsel = __add_event(list, &parse_state->idx, &attr, /*init_attr=*/true, 1482 get_config_name(&parsed_terms), 1483 get_config_metric_id(&parsed_terms), pmu, 1484 &config_terms, auto_merge_stats, /*cpu_list=*/NULL); 1485 if (!evsel) { 1486 parse_events_terms__exit(&parsed_terms); 1487 return -ENOMEM; 1488 } 1489 1490 if (evsel->name) 1491 evsel->use_config_name = true; 1492 1493 evsel->percore = config_term_percore(&evsel->config_terms); 1494 1495 if (parse_state->fake_pmu) { 1496 parse_events_terms__exit(&parsed_terms); 1497 return 0; 1498 } 1499 1500 parse_events_terms__exit(&parsed_terms); 1501 free((char *)evsel->unit); 1502 evsel->unit = strdup(info.unit); 1503 evsel->scale = info.scale; 1504 evsel->per_pkg = info.per_pkg; 1505 evsel->snapshot = info.snapshot; 1506 return 0; 1507 } 1508 1509 int parse_events_multi_pmu_add(struct parse_events_state *parse_state, 1510 const char *event_name, 1511 const struct parse_events_terms *const_parsed_terms, 1512 struct list_head **listp, void *loc_) 1513 { 1514 struct parse_events_term *term; 1515 struct list_head *list = NULL; 1516 struct perf_pmu *pmu = NULL; 1517 YYLTYPE *loc = loc_; 1518 int ok = 0; 1519 const char *config; 1520 struct parse_events_terms parsed_terms; 1521 1522 *listp = NULL; 1523 1524 parse_events_terms__init(&parsed_terms); 1525 if (const_parsed_terms) { 1526 int ret = parse_events_terms__copy(const_parsed_terms, &parsed_terms); 1527 1528 if (ret) 1529 return ret; 1530 } 1531 1532 config = strdup(event_name); 1533 if (!config) 1534 goto out_err; 1535 1536 if (parse_events_term__num(&term, 1537 PARSE_EVENTS__TERM_TYPE_USER, 1538 config, /*num=*/1, /*novalue=*/true, 1539 loc, /*loc_val=*/NULL) < 0) { 1540 zfree(&config); 1541 goto out_err; 1542 } 1543 list_add_tail(&term->list, &parsed_terms.terms); 1544 1545 /* Add it for all PMUs that support the alias */ 1546 list = malloc(sizeof(struct list_head)); 1547 if (!list) 1548 goto out_err; 1549 1550 INIT_LIST_HEAD(list); 1551 1552 while ((pmu = perf_pmus__scan(pmu)) != NULL) { 1553 bool auto_merge_stats; 1554 1555 if (parse_events__filter_pmu(parse_state, pmu)) 1556 continue; 1557 1558 if (!perf_pmu__have_event(pmu, event_name)) 1559 continue; 1560 1561 auto_merge_stats = perf_pmu__auto_merge_stats(pmu); 1562 if (!parse_events_add_pmu(parse_state, list, pmu->name, 1563 &parsed_terms, auto_merge_stats, loc)) { 1564 struct strbuf sb; 1565 1566 strbuf_init(&sb, /*hint=*/ 0); 1567 parse_events_terms__to_strbuf(&parsed_terms, &sb); 1568 pr_debug("%s -> %s/%s/\n", event_name, pmu->name, sb.buf); 1569 strbuf_release(&sb); 1570 ok++; 1571 } 1572 } 1573 1574 if (parse_state->fake_pmu) { 1575 if (!parse_events_add_pmu(parse_state, list, event_name, &parsed_terms, 1576 /*auto_merge_stats=*/true, loc)) { 1577 struct strbuf sb; 1578 1579 strbuf_init(&sb, /*hint=*/ 0); 1580 parse_events_terms__to_strbuf(&parsed_terms, &sb); 1581 pr_debug("%s -> %s/%s/\n", event_name, "fake_pmu", sb.buf); 1582 strbuf_release(&sb); 1583 ok++; 1584 } 1585 } 1586 1587 out_err: 1588 parse_events_terms__exit(&parsed_terms); 1589 if (ok) 1590 *listp = list; 1591 else 1592 free(list); 1593 1594 return ok ? 0 : -1; 1595 } 1596 1597 int parse_events__modifier_group(struct list_head *list, 1598 char *event_mod) 1599 { 1600 return parse_events__modifier_event(list, event_mod, true); 1601 } 1602 1603 void parse_events__set_leader(char *name, struct list_head *list) 1604 { 1605 struct evsel *leader; 1606 1607 if (list_empty(list)) { 1608 WARN_ONCE(true, "WARNING: failed to set leader: empty list"); 1609 return; 1610 } 1611 1612 leader = list_first_entry(list, struct evsel, core.node); 1613 __perf_evlist__set_leader(list, &leader->core); 1614 leader->group_name = name; 1615 } 1616 1617 /* list_event is assumed to point to malloc'ed memory */ 1618 void parse_events_update_lists(struct list_head *list_event, 1619 struct list_head *list_all) 1620 { 1621 /* 1622 * Called for single event definition. Update the 1623 * 'all event' list, and reinit the 'single event' 1624 * list, for next event definition. 1625 */ 1626 list_splice_tail(list_event, list_all); 1627 free(list_event); 1628 } 1629 1630 struct event_modifier { 1631 int eu; 1632 int ek; 1633 int eh; 1634 int eH; 1635 int eG; 1636 int eI; 1637 int precise; 1638 int precise_max; 1639 int exclude_GH; 1640 int sample_read; 1641 int pinned; 1642 int weak; 1643 int exclusive; 1644 int bpf_counter; 1645 }; 1646 1647 static int get_event_modifier(struct event_modifier *mod, char *str, 1648 struct evsel *evsel) 1649 { 1650 int eu = evsel ? evsel->core.attr.exclude_user : 0; 1651 int ek = evsel ? evsel->core.attr.exclude_kernel : 0; 1652 int eh = evsel ? evsel->core.attr.exclude_hv : 0; 1653 int eH = evsel ? evsel->core.attr.exclude_host : 0; 1654 int eG = evsel ? evsel->core.attr.exclude_guest : 0; 1655 int eI = evsel ? evsel->core.attr.exclude_idle : 0; 1656 int precise = evsel ? evsel->core.attr.precise_ip : 0; 1657 int precise_max = 0; 1658 int sample_read = 0; 1659 int pinned = evsel ? evsel->core.attr.pinned : 0; 1660 int exclusive = evsel ? evsel->core.attr.exclusive : 0; 1661 1662 int exclude = eu | ek | eh; 1663 int exclude_GH = evsel ? evsel->exclude_GH : 0; 1664 int weak = 0; 1665 int bpf_counter = 0; 1666 1667 memset(mod, 0, sizeof(*mod)); 1668 1669 while (*str) { 1670 if (*str == 'u') { 1671 if (!exclude) 1672 exclude = eu = ek = eh = 1; 1673 if (!exclude_GH && !perf_guest) 1674 eG = 1; 1675 eu = 0; 1676 } else if (*str == 'k') { 1677 if (!exclude) 1678 exclude = eu = ek = eh = 1; 1679 ek = 0; 1680 } else if (*str == 'h') { 1681 if (!exclude) 1682 exclude = eu = ek = eh = 1; 1683 eh = 0; 1684 } else if (*str == 'G') { 1685 if (!exclude_GH) 1686 exclude_GH = eG = eH = 1; 1687 eG = 0; 1688 } else if (*str == 'H') { 1689 if (!exclude_GH) 1690 exclude_GH = eG = eH = 1; 1691 eH = 0; 1692 } else if (*str == 'I') { 1693 eI = 1; 1694 } else if (*str == 'p') { 1695 precise++; 1696 /* use of precise requires exclude_guest */ 1697 if (!exclude_GH) 1698 eG = 1; 1699 } else if (*str == 'P') { 1700 precise_max = 1; 1701 } else if (*str == 'S') { 1702 sample_read = 1; 1703 } else if (*str == 'D') { 1704 pinned = 1; 1705 } else if (*str == 'e') { 1706 exclusive = 1; 1707 } else if (*str == 'W') { 1708 weak = 1; 1709 } else if (*str == 'b') { 1710 bpf_counter = 1; 1711 } else 1712 break; 1713 1714 ++str; 1715 } 1716 1717 /* 1718 * precise ip: 1719 * 1720 * 0 - SAMPLE_IP can have arbitrary skid 1721 * 1 - SAMPLE_IP must have constant skid 1722 * 2 - SAMPLE_IP requested to have 0 skid 1723 * 3 - SAMPLE_IP must have 0 skid 1724 * 1725 * See also PERF_RECORD_MISC_EXACT_IP 1726 */ 1727 if (precise > 3) 1728 return -EINVAL; 1729 1730 mod->eu = eu; 1731 mod->ek = ek; 1732 mod->eh = eh; 1733 mod->eH = eH; 1734 mod->eG = eG; 1735 mod->eI = eI; 1736 mod->precise = precise; 1737 mod->precise_max = precise_max; 1738 mod->exclude_GH = exclude_GH; 1739 mod->sample_read = sample_read; 1740 mod->pinned = pinned; 1741 mod->weak = weak; 1742 mod->bpf_counter = bpf_counter; 1743 mod->exclusive = exclusive; 1744 1745 return 0; 1746 } 1747 1748 /* 1749 * Basic modifier sanity check to validate it contains only one 1750 * instance of any modifier (apart from 'p') present. 1751 */ 1752 static int check_modifier(char *str) 1753 { 1754 char *p = str; 1755 1756 /* The sizeof includes 0 byte as well. */ 1757 if (strlen(str) > (sizeof("ukhGHpppPSDIWeb") - 1)) 1758 return -1; 1759 1760 while (*p) { 1761 if (*p != 'p' && strchr(p + 1, *p)) 1762 return -1; 1763 p++; 1764 } 1765 1766 return 0; 1767 } 1768 1769 int parse_events__modifier_event(struct list_head *list, char *str, bool add) 1770 { 1771 struct evsel *evsel; 1772 struct event_modifier mod; 1773 1774 if (str == NULL) 1775 return 0; 1776 1777 if (check_modifier(str)) 1778 return -EINVAL; 1779 1780 if (!add && get_event_modifier(&mod, str, NULL)) 1781 return -EINVAL; 1782 1783 __evlist__for_each_entry(list, evsel) { 1784 if (add && get_event_modifier(&mod, str, evsel)) 1785 return -EINVAL; 1786 1787 evsel->core.attr.exclude_user = mod.eu; 1788 evsel->core.attr.exclude_kernel = mod.ek; 1789 evsel->core.attr.exclude_hv = mod.eh; 1790 evsel->core.attr.precise_ip = mod.precise; 1791 evsel->core.attr.exclude_host = mod.eH; 1792 evsel->core.attr.exclude_guest = mod.eG; 1793 evsel->core.attr.exclude_idle = mod.eI; 1794 evsel->exclude_GH = mod.exclude_GH; 1795 evsel->sample_read = mod.sample_read; 1796 evsel->precise_max = mod.precise_max; 1797 evsel->weak_group = mod.weak; 1798 evsel->bpf_counter = mod.bpf_counter; 1799 1800 if (evsel__is_group_leader(evsel)) { 1801 evsel->core.attr.pinned = mod.pinned; 1802 evsel->core.attr.exclusive = mod.exclusive; 1803 } 1804 } 1805 1806 return 0; 1807 } 1808 1809 int parse_events_name(struct list_head *list, const char *name) 1810 { 1811 struct evsel *evsel; 1812 1813 __evlist__for_each_entry(list, evsel) { 1814 if (!evsel->name) { 1815 evsel->name = strdup(name); 1816 if (!evsel->name) 1817 return -ENOMEM; 1818 } 1819 } 1820 1821 return 0; 1822 } 1823 1824 static int parse_events__scanner(const char *str, 1825 FILE *input, 1826 struct parse_events_state *parse_state) 1827 { 1828 YY_BUFFER_STATE buffer; 1829 void *scanner; 1830 int ret; 1831 1832 ret = parse_events_lex_init_extra(parse_state, &scanner); 1833 if (ret) 1834 return ret; 1835 1836 if (str) 1837 buffer = parse_events__scan_string(str, scanner); 1838 else 1839 parse_events_set_in(input, scanner); 1840 1841 #ifdef PARSER_DEBUG 1842 parse_events_debug = 1; 1843 parse_events_set_debug(1, scanner); 1844 #endif 1845 ret = parse_events_parse(parse_state, scanner); 1846 1847 if (str) { 1848 parse_events__flush_buffer(buffer, scanner); 1849 parse_events__delete_buffer(buffer, scanner); 1850 } 1851 parse_events_lex_destroy(scanner); 1852 return ret; 1853 } 1854 1855 /* 1856 * parse event config string, return a list of event terms. 1857 */ 1858 int parse_events_terms(struct parse_events_terms *terms, const char *str, FILE *input) 1859 { 1860 struct parse_events_state parse_state = { 1861 .terms = NULL, 1862 .stoken = PE_START_TERMS, 1863 }; 1864 int ret; 1865 1866 ret = parse_events__scanner(str, input, &parse_state); 1867 if (!ret) 1868 list_splice(&parse_state.terms->terms, &terms->terms); 1869 1870 zfree(&parse_state.terms); 1871 return ret; 1872 } 1873 1874 static int evsel__compute_group_pmu_name(struct evsel *evsel, 1875 const struct list_head *head) 1876 { 1877 struct evsel *leader = evsel__leader(evsel); 1878 struct evsel *pos; 1879 const char *group_pmu_name; 1880 struct perf_pmu *pmu = evsel__find_pmu(evsel); 1881 1882 if (!pmu) { 1883 /* 1884 * For PERF_TYPE_HARDWARE and PERF_TYPE_HW_CACHE types the PMU 1885 * is a core PMU, but in heterogeneous systems this is 1886 * unknown. For now pick the first core PMU. 1887 */ 1888 pmu = perf_pmus__scan_core(NULL); 1889 } 1890 if (!pmu) { 1891 pr_debug("No PMU found for '%s'\n", evsel__name(evsel)); 1892 return -EINVAL; 1893 } 1894 group_pmu_name = pmu->name; 1895 /* 1896 * Software events may be in a group with other uncore PMU events. Use 1897 * the pmu_name of the first non-software event to avoid breaking the 1898 * software event out of the group. 1899 * 1900 * Aux event leaders, like intel_pt, expect a group with events from 1901 * other PMUs, so substitute the AUX event's PMU in this case. 1902 */ 1903 if (perf_pmu__is_software(pmu) || evsel__is_aux_event(leader)) { 1904 struct perf_pmu *leader_pmu = evsel__find_pmu(leader); 1905 1906 if (!leader_pmu) { 1907 /* As with determining pmu above. */ 1908 leader_pmu = perf_pmus__scan_core(NULL); 1909 } 1910 /* 1911 * Starting with the leader, find the first event with a named 1912 * non-software PMU. for_each_group_(member|evsel) isn't used as 1913 * the list isn't yet sorted putting evsel's in the same group 1914 * together. 1915 */ 1916 if (leader_pmu && !perf_pmu__is_software(leader_pmu)) { 1917 group_pmu_name = leader_pmu->name; 1918 } else if (leader->core.nr_members > 1) { 1919 list_for_each_entry(pos, head, core.node) { 1920 struct perf_pmu *pos_pmu; 1921 1922 if (pos == leader || evsel__leader(pos) != leader) 1923 continue; 1924 pos_pmu = evsel__find_pmu(pos); 1925 if (!pos_pmu) { 1926 /* As with determining pmu above. */ 1927 pos_pmu = perf_pmus__scan_core(NULL); 1928 } 1929 if (pos_pmu && !perf_pmu__is_software(pos_pmu)) { 1930 group_pmu_name = pos_pmu->name; 1931 break; 1932 } 1933 } 1934 } 1935 } 1936 /* Assign the actual name taking care that the fake PMU lacks a name. */ 1937 evsel->group_pmu_name = strdup(group_pmu_name ?: "fake"); 1938 return evsel->group_pmu_name ? 0 : -ENOMEM; 1939 } 1940 1941 __weak int arch_evlist__cmp(const struct evsel *lhs, const struct evsel *rhs) 1942 { 1943 /* Order by insertion index. */ 1944 return lhs->core.idx - rhs->core.idx; 1945 } 1946 1947 static int evlist__cmp(void *_fg_idx, const struct list_head *l, const struct list_head *r) 1948 { 1949 const struct perf_evsel *lhs_core = container_of(l, struct perf_evsel, node); 1950 const struct evsel *lhs = container_of(lhs_core, struct evsel, core); 1951 const struct perf_evsel *rhs_core = container_of(r, struct perf_evsel, node); 1952 const struct evsel *rhs = container_of(rhs_core, struct evsel, core); 1953 int *force_grouped_idx = _fg_idx; 1954 int lhs_sort_idx, rhs_sort_idx, ret; 1955 const char *lhs_pmu_name, *rhs_pmu_name; 1956 bool lhs_has_group, rhs_has_group; 1957 1958 /* 1959 * First sort by grouping/leader. Read the leader idx only if the evsel 1960 * is part of a group, by default ungrouped events will be sorted 1961 * relative to grouped events based on where the first ungrouped event 1962 * occurs. If both events don't have a group we want to fall-through to 1963 * the arch specific sorting, that can reorder and fix things like 1964 * Intel's topdown events. 1965 */ 1966 if (lhs_core->leader != lhs_core || lhs_core->nr_members > 1) { 1967 lhs_has_group = true; 1968 lhs_sort_idx = lhs_core->leader->idx; 1969 } else { 1970 lhs_has_group = false; 1971 lhs_sort_idx = *force_grouped_idx != -1 && arch_evsel__must_be_in_group(lhs) 1972 ? *force_grouped_idx 1973 : lhs_core->idx; 1974 } 1975 if (rhs_core->leader != rhs_core || rhs_core->nr_members > 1) { 1976 rhs_has_group = true; 1977 rhs_sort_idx = rhs_core->leader->idx; 1978 } else { 1979 rhs_has_group = false; 1980 rhs_sort_idx = *force_grouped_idx != -1 && arch_evsel__must_be_in_group(rhs) 1981 ? *force_grouped_idx 1982 : rhs_core->idx; 1983 } 1984 1985 if (lhs_sort_idx != rhs_sort_idx) 1986 return lhs_sort_idx - rhs_sort_idx; 1987 1988 /* Group by PMU if there is a group. Groups can't span PMUs. */ 1989 if (lhs_has_group && rhs_has_group) { 1990 lhs_pmu_name = lhs->group_pmu_name; 1991 rhs_pmu_name = rhs->group_pmu_name; 1992 ret = strcmp(lhs_pmu_name, rhs_pmu_name); 1993 if (ret) 1994 return ret; 1995 } 1996 1997 /* Architecture specific sorting. */ 1998 return arch_evlist__cmp(lhs, rhs); 1999 } 2000 2001 static int parse_events__sort_events_and_fix_groups(struct list_head *list) 2002 { 2003 int idx = 0, force_grouped_idx = -1; 2004 struct evsel *pos, *cur_leader = NULL; 2005 struct perf_evsel *cur_leaders_grp = NULL; 2006 bool idx_changed = false, cur_leader_force_grouped = false; 2007 int orig_num_leaders = 0, num_leaders = 0; 2008 int ret; 2009 2010 /* 2011 * Compute index to insert ungrouped events at. Place them where the 2012 * first ungrouped event appears. 2013 */ 2014 list_for_each_entry(pos, list, core.node) { 2015 const struct evsel *pos_leader = evsel__leader(pos); 2016 2017 ret = evsel__compute_group_pmu_name(pos, list); 2018 if (ret) 2019 return ret; 2020 2021 if (pos == pos_leader) 2022 orig_num_leaders++; 2023 2024 /* 2025 * Ensure indexes are sequential, in particular for multiple 2026 * event lists being merged. The indexes are used to detect when 2027 * the user order is modified. 2028 */ 2029 pos->core.idx = idx++; 2030 2031 /* Remember an index to sort all forced grouped events together to. */ 2032 if (force_grouped_idx == -1 && pos == pos_leader && pos->core.nr_members < 2 && 2033 arch_evsel__must_be_in_group(pos)) 2034 force_grouped_idx = pos->core.idx; 2035 } 2036 2037 /* Sort events. */ 2038 list_sort(&force_grouped_idx, list, evlist__cmp); 2039 2040 /* 2041 * Recompute groups, splitting for PMUs and adding groups for events 2042 * that require them. 2043 */ 2044 idx = 0; 2045 list_for_each_entry(pos, list, core.node) { 2046 const struct evsel *pos_leader = evsel__leader(pos); 2047 const char *pos_pmu_name = pos->group_pmu_name; 2048 const char *cur_leader_pmu_name; 2049 bool pos_force_grouped = force_grouped_idx != -1 && 2050 arch_evsel__must_be_in_group(pos); 2051 2052 /* Reset index and nr_members. */ 2053 if (pos->core.idx != idx) 2054 idx_changed = true; 2055 pos->core.idx = idx++; 2056 pos->core.nr_members = 0; 2057 2058 /* 2059 * Set the group leader respecting the given groupings and that 2060 * groups can't span PMUs. 2061 */ 2062 if (!cur_leader) 2063 cur_leader = pos; 2064 2065 cur_leader_pmu_name = cur_leader->group_pmu_name; 2066 if ((cur_leaders_grp != pos->core.leader && 2067 (!pos_force_grouped || !cur_leader_force_grouped)) || 2068 strcmp(cur_leader_pmu_name, pos_pmu_name)) { 2069 /* Event is for a different group/PMU than last. */ 2070 cur_leader = pos; 2071 /* 2072 * Remember the leader's group before it is overwritten, 2073 * so that later events match as being in the same 2074 * group. 2075 */ 2076 cur_leaders_grp = pos->core.leader; 2077 /* 2078 * Avoid forcing events into groups with events that 2079 * don't need to be in the group. 2080 */ 2081 cur_leader_force_grouped = pos_force_grouped; 2082 } 2083 if (pos_leader != cur_leader) { 2084 /* The leader changed so update it. */ 2085 evsel__set_leader(pos, cur_leader); 2086 } 2087 } 2088 list_for_each_entry(pos, list, core.node) { 2089 struct evsel *pos_leader = evsel__leader(pos); 2090 2091 if (pos == pos_leader) 2092 num_leaders++; 2093 pos_leader->core.nr_members++; 2094 } 2095 return (idx_changed || num_leaders != orig_num_leaders) ? 1 : 0; 2096 } 2097 2098 int __parse_events(struct evlist *evlist, const char *str, const char *pmu_filter, 2099 struct parse_events_error *err, struct perf_pmu *fake_pmu, 2100 bool warn_if_reordered) 2101 { 2102 struct parse_events_state parse_state = { 2103 .list = LIST_HEAD_INIT(parse_state.list), 2104 .idx = evlist->core.nr_entries, 2105 .error = err, 2106 .stoken = PE_START_EVENTS, 2107 .fake_pmu = fake_pmu, 2108 .pmu_filter = pmu_filter, 2109 .match_legacy_cache_terms = true, 2110 }; 2111 int ret, ret2; 2112 2113 ret = parse_events__scanner(str, /*input=*/ NULL, &parse_state); 2114 2115 if (!ret && list_empty(&parse_state.list)) { 2116 WARN_ONCE(true, "WARNING: event parser found nothing\n"); 2117 return -1; 2118 } 2119 2120 ret2 = parse_events__sort_events_and_fix_groups(&parse_state.list); 2121 if (ret2 < 0) 2122 return ret; 2123 2124 if (ret2 && warn_if_reordered && !parse_state.wild_card_pmus) 2125 pr_warning("WARNING: events were regrouped to match PMUs\n"); 2126 2127 /* 2128 * Add list to the evlist even with errors to allow callers to clean up. 2129 */ 2130 evlist__splice_list_tail(evlist, &parse_state.list); 2131 2132 if (!ret) { 2133 struct evsel *last; 2134 2135 last = evlist__last(evlist); 2136 last->cmdline_group_boundary = true; 2137 2138 return 0; 2139 } 2140 2141 /* 2142 * There are 2 users - builtin-record and builtin-test objects. 2143 * Both call evlist__delete in case of error, so we dont 2144 * need to bother. 2145 */ 2146 return ret; 2147 } 2148 2149 int parse_event(struct evlist *evlist, const char *str) 2150 { 2151 struct parse_events_error err; 2152 int ret; 2153 2154 parse_events_error__init(&err); 2155 ret = parse_events(evlist, str, &err); 2156 parse_events_error__exit(&err); 2157 return ret; 2158 } 2159 2160 void parse_events_error__init(struct parse_events_error *err) 2161 { 2162 bzero(err, sizeof(*err)); 2163 } 2164 2165 void parse_events_error__exit(struct parse_events_error *err) 2166 { 2167 zfree(&err->str); 2168 zfree(&err->help); 2169 zfree(&err->first_str); 2170 zfree(&err->first_help); 2171 } 2172 2173 void parse_events_error__handle(struct parse_events_error *err, int idx, 2174 char *str, char *help) 2175 { 2176 if (WARN(!str || !err, "WARNING: failed to provide error string or struct\n")) 2177 goto out_free; 2178 switch (err->num_errors) { 2179 case 0: 2180 err->idx = idx; 2181 err->str = str; 2182 err->help = help; 2183 break; 2184 case 1: 2185 err->first_idx = err->idx; 2186 err->idx = idx; 2187 err->first_str = err->str; 2188 err->str = str; 2189 err->first_help = err->help; 2190 err->help = help; 2191 break; 2192 default: 2193 pr_debug("Multiple errors dropping message: %s (%s)\n", 2194 err->str, err->help ?: "<no help>"); 2195 free(err->str); 2196 err->str = str; 2197 free(err->help); 2198 err->help = help; 2199 break; 2200 } 2201 err->num_errors++; 2202 return; 2203 2204 out_free: 2205 free(str); 2206 free(help); 2207 } 2208 2209 #define MAX_WIDTH 1000 2210 static int get_term_width(void) 2211 { 2212 struct winsize ws; 2213 2214 get_term_dimensions(&ws); 2215 return ws.ws_col > MAX_WIDTH ? MAX_WIDTH : ws.ws_col; 2216 } 2217 2218 static void __parse_events_error__print(int err_idx, const char *err_str, 2219 const char *err_help, const char *event) 2220 { 2221 const char *str = "invalid or unsupported event: "; 2222 char _buf[MAX_WIDTH]; 2223 char *buf = (char *) event; 2224 int idx = 0; 2225 if (err_str) { 2226 /* -2 for extra '' in the final fprintf */ 2227 int width = get_term_width() - 2; 2228 int len_event = strlen(event); 2229 int len_str, max_len, cut = 0; 2230 2231 /* 2232 * Maximum error index indent, we will cut 2233 * the event string if it's bigger. 2234 */ 2235 int max_err_idx = 13; 2236 2237 /* 2238 * Let's be specific with the message when 2239 * we have the precise error. 2240 */ 2241 str = "event syntax error: "; 2242 len_str = strlen(str); 2243 max_len = width - len_str; 2244 2245 buf = _buf; 2246 2247 /* We're cutting from the beginning. */ 2248 if (err_idx > max_err_idx) 2249 cut = err_idx - max_err_idx; 2250 2251 strncpy(buf, event + cut, max_len); 2252 2253 /* Mark cut parts with '..' on both sides. */ 2254 if (cut) 2255 buf[0] = buf[1] = '.'; 2256 2257 if ((len_event - cut) > max_len) { 2258 buf[max_len - 1] = buf[max_len - 2] = '.'; 2259 buf[max_len] = 0; 2260 } 2261 2262 idx = len_str + err_idx - cut; 2263 } 2264 2265 fprintf(stderr, "%s'%s'\n", str, buf); 2266 if (idx) { 2267 fprintf(stderr, "%*s\\___ %s\n", idx + 1, "", err_str); 2268 if (err_help) 2269 fprintf(stderr, "\n%s\n", err_help); 2270 } 2271 } 2272 2273 void parse_events_error__print(struct parse_events_error *err, 2274 const char *event) 2275 { 2276 if (!err->num_errors) 2277 return; 2278 2279 __parse_events_error__print(err->idx, err->str, err->help, event); 2280 2281 if (err->num_errors > 1) { 2282 fputs("\nInitial error:\n", stderr); 2283 __parse_events_error__print(err->first_idx, err->first_str, 2284 err->first_help, event); 2285 } 2286 } 2287 2288 #undef MAX_WIDTH 2289 2290 int parse_events_option(const struct option *opt, const char *str, 2291 int unset __maybe_unused) 2292 { 2293 struct parse_events_option_args *args = opt->value; 2294 struct parse_events_error err; 2295 int ret; 2296 2297 parse_events_error__init(&err); 2298 ret = __parse_events(*args->evlistp, str, args->pmu_filter, &err, 2299 /*fake_pmu=*/NULL, /*warn_if_reordered=*/true); 2300 2301 if (ret) { 2302 parse_events_error__print(&err, str); 2303 fprintf(stderr, "Run 'perf list' for a list of valid events\n"); 2304 } 2305 parse_events_error__exit(&err); 2306 2307 return ret; 2308 } 2309 2310 int parse_events_option_new_evlist(const struct option *opt, const char *str, int unset) 2311 { 2312 struct parse_events_option_args *args = opt->value; 2313 int ret; 2314 2315 if (*args->evlistp == NULL) { 2316 *args->evlistp = evlist__new(); 2317 2318 if (*args->evlistp == NULL) { 2319 fprintf(stderr, "Not enough memory to create evlist\n"); 2320 return -1; 2321 } 2322 } 2323 ret = parse_events_option(opt, str, unset); 2324 if (ret) { 2325 evlist__delete(*args->evlistp); 2326 *args->evlistp = NULL; 2327 } 2328 2329 return ret; 2330 } 2331 2332 static int 2333 foreach_evsel_in_last_glob(struct evlist *evlist, 2334 int (*func)(struct evsel *evsel, 2335 const void *arg), 2336 const void *arg) 2337 { 2338 struct evsel *last = NULL; 2339 int err; 2340 2341 /* 2342 * Don't return when list_empty, give func a chance to report 2343 * error when it found last == NULL. 2344 * 2345 * So no need to WARN here, let *func do this. 2346 */ 2347 if (evlist->core.nr_entries > 0) 2348 last = evlist__last(evlist); 2349 2350 do { 2351 err = (*func)(last, arg); 2352 if (err) 2353 return -1; 2354 if (!last) 2355 return 0; 2356 2357 if (last->core.node.prev == &evlist->core.entries) 2358 return 0; 2359 last = list_entry(last->core.node.prev, struct evsel, core.node); 2360 } while (!last->cmdline_group_boundary); 2361 2362 return 0; 2363 } 2364 2365 static int set_filter(struct evsel *evsel, const void *arg) 2366 { 2367 const char *str = arg; 2368 bool found = false; 2369 int nr_addr_filters = 0; 2370 struct perf_pmu *pmu = NULL; 2371 2372 if (evsel == NULL) { 2373 fprintf(stderr, 2374 "--filter option should follow a -e tracepoint or HW tracer option\n"); 2375 return -1; 2376 } 2377 2378 if (evsel->core.attr.type == PERF_TYPE_TRACEPOINT) { 2379 if (evsel__append_tp_filter(evsel, str) < 0) { 2380 fprintf(stderr, 2381 "not enough memory to hold filter string\n"); 2382 return -1; 2383 } 2384 2385 return 0; 2386 } 2387 2388 while ((pmu = perf_pmus__scan(pmu)) != NULL) 2389 if (pmu->type == evsel->core.attr.type) { 2390 found = true; 2391 break; 2392 } 2393 2394 if (found) 2395 perf_pmu__scan_file(pmu, "nr_addr_filters", 2396 "%d", &nr_addr_filters); 2397 2398 if (!nr_addr_filters) 2399 return perf_bpf_filter__parse(&evsel->bpf_filters, str); 2400 2401 if (evsel__append_addr_filter(evsel, str) < 0) { 2402 fprintf(stderr, 2403 "not enough memory to hold filter string\n"); 2404 return -1; 2405 } 2406 2407 return 0; 2408 } 2409 2410 int parse_filter(const struct option *opt, const char *str, 2411 int unset __maybe_unused) 2412 { 2413 struct evlist *evlist = *(struct evlist **)opt->value; 2414 2415 return foreach_evsel_in_last_glob(evlist, set_filter, 2416 (const void *)str); 2417 } 2418 2419 static int add_exclude_perf_filter(struct evsel *evsel, 2420 const void *arg __maybe_unused) 2421 { 2422 char new_filter[64]; 2423 2424 if (evsel == NULL || evsel->core.attr.type != PERF_TYPE_TRACEPOINT) { 2425 fprintf(stderr, 2426 "--exclude-perf option should follow a -e tracepoint option\n"); 2427 return -1; 2428 } 2429 2430 snprintf(new_filter, sizeof(new_filter), "common_pid != %d", getpid()); 2431 2432 if (evsel__append_tp_filter(evsel, new_filter) < 0) { 2433 fprintf(stderr, 2434 "not enough memory to hold filter string\n"); 2435 return -1; 2436 } 2437 2438 return 0; 2439 } 2440 2441 int exclude_perf(const struct option *opt, 2442 const char *arg __maybe_unused, 2443 int unset __maybe_unused) 2444 { 2445 struct evlist *evlist = *(struct evlist **)opt->value; 2446 2447 return foreach_evsel_in_last_glob(evlist, add_exclude_perf_filter, 2448 NULL); 2449 } 2450 2451 int parse_events__is_hardcoded_term(struct parse_events_term *term) 2452 { 2453 return term->type_term != PARSE_EVENTS__TERM_TYPE_USER; 2454 } 2455 2456 static int new_term(struct parse_events_term **_term, 2457 struct parse_events_term *temp, 2458 char *str, u64 num) 2459 { 2460 struct parse_events_term *term; 2461 2462 term = malloc(sizeof(*term)); 2463 if (!term) 2464 return -ENOMEM; 2465 2466 *term = *temp; 2467 INIT_LIST_HEAD(&term->list); 2468 term->weak = false; 2469 2470 switch (term->type_val) { 2471 case PARSE_EVENTS__TERM_TYPE_NUM: 2472 term->val.num = num; 2473 break; 2474 case PARSE_EVENTS__TERM_TYPE_STR: 2475 term->val.str = str; 2476 break; 2477 default: 2478 free(term); 2479 return -EINVAL; 2480 } 2481 2482 *_term = term; 2483 return 0; 2484 } 2485 2486 int parse_events_term__num(struct parse_events_term **term, 2487 enum parse_events__term_type type_term, 2488 const char *config, u64 num, 2489 bool no_value, 2490 void *loc_term_, void *loc_val_) 2491 { 2492 YYLTYPE *loc_term = loc_term_; 2493 YYLTYPE *loc_val = loc_val_; 2494 2495 struct parse_events_term temp = { 2496 .type_val = PARSE_EVENTS__TERM_TYPE_NUM, 2497 .type_term = type_term, 2498 .config = config ? : strdup(config_term_name(type_term)), 2499 .no_value = no_value, 2500 .err_term = loc_term ? loc_term->first_column : 0, 2501 .err_val = loc_val ? loc_val->first_column : 0, 2502 }; 2503 2504 return new_term(term, &temp, /*str=*/NULL, num); 2505 } 2506 2507 int parse_events_term__str(struct parse_events_term **term, 2508 enum parse_events__term_type type_term, 2509 char *config, char *str, 2510 void *loc_term_, void *loc_val_) 2511 { 2512 YYLTYPE *loc_term = loc_term_; 2513 YYLTYPE *loc_val = loc_val_; 2514 2515 struct parse_events_term temp = { 2516 .type_val = PARSE_EVENTS__TERM_TYPE_STR, 2517 .type_term = type_term, 2518 .config = config, 2519 .err_term = loc_term ? loc_term->first_column : 0, 2520 .err_val = loc_val ? loc_val->first_column : 0, 2521 }; 2522 2523 return new_term(term, &temp, str, /*num=*/0); 2524 } 2525 2526 int parse_events_term__term(struct parse_events_term **term, 2527 enum parse_events__term_type term_lhs, 2528 enum parse_events__term_type term_rhs, 2529 void *loc_term, void *loc_val) 2530 { 2531 return parse_events_term__str(term, term_lhs, NULL, 2532 strdup(config_term_name(term_rhs)), 2533 loc_term, loc_val); 2534 } 2535 2536 int parse_events_term__clone(struct parse_events_term **new, 2537 struct parse_events_term *term) 2538 { 2539 char *str; 2540 struct parse_events_term temp = *term; 2541 2542 temp.used = false; 2543 if (term->config) { 2544 temp.config = strdup(term->config); 2545 if (!temp.config) 2546 return -ENOMEM; 2547 } 2548 if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) 2549 return new_term(new, &temp, /*str=*/NULL, term->val.num); 2550 2551 str = strdup(term->val.str); 2552 if (!str) { 2553 zfree(&temp.config); 2554 return -ENOMEM; 2555 } 2556 return new_term(new, &temp, str, /*num=*/0); 2557 } 2558 2559 void parse_events_term__delete(struct parse_events_term *term) 2560 { 2561 if (term->type_val != PARSE_EVENTS__TERM_TYPE_NUM) 2562 zfree(&term->val.str); 2563 2564 zfree(&term->config); 2565 free(term); 2566 } 2567 2568 static int parse_events_terms__copy(const struct parse_events_terms *src, 2569 struct parse_events_terms *dest) 2570 { 2571 struct parse_events_term *term; 2572 2573 list_for_each_entry (term, &src->terms, list) { 2574 struct parse_events_term *n; 2575 int ret; 2576 2577 ret = parse_events_term__clone(&n, term); 2578 if (ret) 2579 return ret; 2580 2581 list_add_tail(&n->list, &dest->terms); 2582 } 2583 return 0; 2584 } 2585 2586 void parse_events_terms__init(struct parse_events_terms *terms) 2587 { 2588 INIT_LIST_HEAD(&terms->terms); 2589 } 2590 2591 void parse_events_terms__exit(struct parse_events_terms *terms) 2592 { 2593 struct parse_events_term *term, *h; 2594 2595 list_for_each_entry_safe(term, h, &terms->terms, list) { 2596 list_del_init(&term->list); 2597 parse_events_term__delete(term); 2598 } 2599 } 2600 2601 void parse_events_terms__delete(struct parse_events_terms *terms) 2602 { 2603 if (!terms) 2604 return; 2605 parse_events_terms__exit(terms); 2606 free(terms); 2607 } 2608 2609 int parse_events_terms__to_strbuf(const struct parse_events_terms *terms, struct strbuf *sb) 2610 { 2611 struct parse_events_term *term; 2612 bool first = true; 2613 2614 if (!terms) 2615 return 0; 2616 2617 list_for_each_entry(term, &terms->terms, list) { 2618 int ret; 2619 2620 if (!first) { 2621 ret = strbuf_addch(sb, ','); 2622 if (ret < 0) 2623 return ret; 2624 } 2625 first = false; 2626 2627 if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) 2628 if (term->no_value) { 2629 assert(term->val.num == 1); 2630 ret = strbuf_addf(sb, "%s", term->config); 2631 } else 2632 ret = strbuf_addf(sb, "%s=%#"PRIx64, term->config, term->val.num); 2633 else if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR) { 2634 if (term->config) { 2635 ret = strbuf_addf(sb, "%s=", term->config); 2636 if (ret < 0) 2637 return ret; 2638 } else if ((unsigned int)term->type_term < __PARSE_EVENTS__TERM_TYPE_NR) { 2639 ret = strbuf_addf(sb, "%s=", config_term_name(term->type_term)); 2640 if (ret < 0) 2641 return ret; 2642 } 2643 assert(!term->no_value); 2644 ret = strbuf_addf(sb, "%s", term->val.str); 2645 } 2646 if (ret < 0) 2647 return ret; 2648 } 2649 return 0; 2650 } 2651 2652 void parse_events_evlist_error(struct parse_events_state *parse_state, 2653 int idx, const char *str) 2654 { 2655 if (!parse_state->error) 2656 return; 2657 2658 parse_events_error__handle(parse_state->error, idx, strdup(str), NULL); 2659 } 2660 2661 static void config_terms_list(char *buf, size_t buf_sz) 2662 { 2663 int i; 2664 bool first = true; 2665 2666 buf[0] = '\0'; 2667 for (i = 0; i < __PARSE_EVENTS__TERM_TYPE_NR; i++) { 2668 const char *name = config_term_name(i); 2669 2670 if (!config_term_avail(i, NULL)) 2671 continue; 2672 if (!name) 2673 continue; 2674 if (name[0] == '<') 2675 continue; 2676 2677 if (strlen(buf) + strlen(name) + 2 >= buf_sz) 2678 return; 2679 2680 if (!first) 2681 strcat(buf, ","); 2682 else 2683 first = false; 2684 strcat(buf, name); 2685 } 2686 } 2687 2688 /* 2689 * Return string contains valid config terms of an event. 2690 * @additional_terms: For terms such as PMU sysfs terms. 2691 */ 2692 char *parse_events_formats_error_string(char *additional_terms) 2693 { 2694 char *str; 2695 /* "no-overwrite" is the longest name */ 2696 char static_terms[__PARSE_EVENTS__TERM_TYPE_NR * 2697 (sizeof("no-overwrite") - 1)]; 2698 2699 config_terms_list(static_terms, sizeof(static_terms)); 2700 /* valid terms */ 2701 if (additional_terms) { 2702 if (asprintf(&str, "valid terms: %s,%s", 2703 additional_terms, static_terms) < 0) 2704 goto fail; 2705 } else { 2706 if (asprintf(&str, "valid terms: %s", static_terms) < 0) 2707 goto fail; 2708 } 2709 return str; 2710 2711 fail: 2712 return NULL; 2713 } 2714