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 "cpumap.h" 11 #include "term.h" 12 #include "env.h" 13 #include "evlist.h" 14 #include "evsel.h" 15 #include <subcmd/parse-options.h> 16 #include "parse-events.h" 17 #include "string2.h" 18 #include "strbuf.h" 19 #include "debug.h" 20 #include <perf/cpumap.h> 21 #include <util/parse-events-bison.h> 22 #include <util/parse-events-flex.h> 23 #include "pmu.h" 24 #include "pmus.h" 25 #include "tp_pmu.h" 26 #include "asm/bug.h" 27 #include "ui/ui.h" 28 #include "util/parse-branch-options.h" 29 #include "util/evsel_config.h" 30 #include "util/event.h" 31 #include "util/bpf-filter.h" 32 #include "util/stat.h" 33 #include "util/tool_pmu.h" 34 #include "util/util.h" 35 #include "tracepoint.h" 36 #include <api/fs/tracing_path.h> 37 38 #define MAX_NAME_LEN 100 39 40 static int get_config_terms(const struct parse_events_terms *head_config, 41 struct list_head *head_terms); 42 static int parse_events_terms__copy(const struct parse_events_terms *src, 43 struct parse_events_terms *dest); 44 static int parse_events_terms__to_strbuf(const struct parse_events_terms *terms, struct strbuf *sb); 45 46 static const char *const event_types[] = { 47 [PERF_TYPE_HARDWARE] = "hardware", 48 [PERF_TYPE_SOFTWARE] = "software", 49 [PERF_TYPE_TRACEPOINT] = "tracepoint", 50 [PERF_TYPE_HW_CACHE] = "hardware-cache", 51 [PERF_TYPE_RAW] = "raw", 52 [PERF_TYPE_BREAKPOINT] = "breakpoint", 53 }; 54 55 const char *event_type(size_t type) 56 { 57 if (type >= PERF_TYPE_MAX) 58 return "unknown"; 59 60 return event_types[type]; 61 } 62 63 static char *get_config_str(const struct parse_events_terms *head_terms, 64 enum parse_events__term_type type_term) 65 { 66 struct parse_events_term *term; 67 68 if (!head_terms) 69 return NULL; 70 71 list_for_each_entry(term, &head_terms->terms, list) 72 if (term->type_term == type_term) 73 return term->val.str; 74 75 return NULL; 76 } 77 78 static char *get_config_metric_id(const struct parse_events_terms *head_terms) 79 { 80 return get_config_str(head_terms, PARSE_EVENTS__TERM_TYPE_METRIC_ID); 81 } 82 83 static char *get_config_name(const struct parse_events_terms *head_terms) 84 { 85 return get_config_str(head_terms, PARSE_EVENTS__TERM_TYPE_NAME); 86 } 87 88 static struct perf_cpu_map *get_config_cpu(const struct parse_events_terms *head_terms, 89 bool fake_pmu) 90 { 91 struct parse_events_term *term; 92 struct perf_cpu_map *cpus = NULL; 93 94 if (!head_terms) 95 return NULL; 96 97 list_for_each_entry(term, &head_terms->terms, list) { 98 struct perf_cpu_map *term_cpus; 99 100 if (term->type_term != PARSE_EVENTS__TERM_TYPE_CPU) 101 continue; 102 103 if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) { 104 term_cpus = perf_cpu_map__new_int(term->val.num); 105 } else { 106 struct perf_pmu *pmu = perf_pmus__find(term->val.str); 107 108 if (pmu) { 109 term_cpus = pmu->is_core && perf_cpu_map__is_empty(pmu->cpus) 110 ? cpu_map__online() 111 : perf_cpu_map__get(pmu->cpus); 112 } else { 113 term_cpus = perf_cpu_map__new(term->val.str); 114 if (!term_cpus && fake_pmu) { 115 /* 116 * Assume the PMU string makes sense on a different 117 * machine and fake a value with all online CPUs. 118 */ 119 term_cpus = cpu_map__online(); 120 } 121 } 122 } 123 perf_cpu_map__merge(&cpus, term_cpus); 124 perf_cpu_map__put(term_cpus); 125 } 126 127 return cpus; 128 } 129 130 /** 131 * fix_raw - For each raw term see if there is an event (aka alias) in pmu that 132 * matches the raw's string value. If the string value matches an 133 * event then change the term to be an event, if not then change it to 134 * be a config term. For example, "read" may be an event of the PMU or 135 * a raw hex encoding of 0xead. The fix-up is done late so the PMU of 136 * the event can be determined and we don't need to scan all PMUs 137 * ahead-of-time. 138 * @config_terms: the list of terms that may contain a raw term. 139 * @pmu: the PMU to scan for events from. 140 */ 141 static void fix_raw(struct parse_events_terms *config_terms, struct perf_pmu *pmu) 142 { 143 struct parse_events_term *term; 144 145 list_for_each_entry(term, &config_terms->terms, list) { 146 u64 num; 147 148 if (term->type_term != PARSE_EVENTS__TERM_TYPE_RAW) 149 continue; 150 151 if (perf_pmu__have_event(pmu, term->val.str)) { 152 zfree(&term->config); 153 term->config = term->val.str; 154 term->type_val = PARSE_EVENTS__TERM_TYPE_NUM; 155 term->type_term = PARSE_EVENTS__TERM_TYPE_USER; 156 term->val.num = 1; 157 term->no_value = true; 158 continue; 159 } 160 161 zfree(&term->config); 162 term->config = strdup("config"); 163 errno = 0; 164 num = strtoull(term->val.str + 1, NULL, 16); 165 assert(errno == 0); 166 free(term->val.str); 167 term->type_val = PARSE_EVENTS__TERM_TYPE_NUM; 168 term->type_term = PARSE_EVENTS__TERM_TYPE_CONFIG; 169 term->val.num = num; 170 term->no_value = false; 171 } 172 } 173 174 static struct evsel * 175 __add_event(struct list_head *list, int *idx, 176 struct perf_event_attr *attr, 177 bool init_attr, 178 const char *name, const char *metric_id, struct perf_pmu *pmu, 179 struct list_head *config_terms, struct evsel *first_wildcard_match, 180 struct perf_cpu_map *user_cpus, u64 alternate_hw_config) 181 { 182 struct evsel *evsel; 183 bool is_pmu_core; 184 struct perf_cpu_map *cpus, *pmu_cpus; 185 bool has_user_cpus = !perf_cpu_map__is_empty(user_cpus); 186 187 /* 188 * Ensure the first_wildcard_match's PMU matches that of the new event 189 * being added. Otherwise try to match with another event further down 190 * the evlist. 191 */ 192 if (first_wildcard_match) { 193 struct evsel *pos = list_prev_entry(first_wildcard_match, core.node); 194 195 first_wildcard_match = NULL; 196 list_for_each_entry_continue(pos, list, core.node) { 197 if (perf_pmu__name_no_suffix_match(pos->pmu, pmu->name)) { 198 first_wildcard_match = pos; 199 break; 200 } 201 if (pos->pmu->is_core && (!pmu || pmu->is_core)) { 202 first_wildcard_match = pos; 203 break; 204 } 205 } 206 } 207 208 if (pmu) { 209 perf_pmu__warn_invalid_formats(pmu); 210 if (attr->type == PERF_TYPE_RAW || attr->type >= PERF_TYPE_MAX) { 211 perf_pmu__warn_invalid_config(pmu, attr->config, name, 212 PERF_PMU_FORMAT_VALUE_CONFIG, "config"); 213 perf_pmu__warn_invalid_config(pmu, attr->config1, name, 214 PERF_PMU_FORMAT_VALUE_CONFIG1, "config1"); 215 perf_pmu__warn_invalid_config(pmu, attr->config2, name, 216 PERF_PMU_FORMAT_VALUE_CONFIG2, "config2"); 217 perf_pmu__warn_invalid_config(pmu, attr->config3, name, 218 PERF_PMU_FORMAT_VALUE_CONFIG3, "config3"); 219 perf_pmu__warn_invalid_config(pmu, attr->config4, name, 220 PERF_PMU_FORMAT_VALUE_CONFIG4, "config4"); 221 } 222 } 223 /* 224 * If a PMU wasn't given, such as for legacy events, find now that 225 * warnings won't be generated. 226 */ 227 if (!pmu) 228 pmu = perf_pmus__find_by_attr(attr); 229 230 if (pmu) { 231 is_pmu_core = pmu->is_core; 232 pmu_cpus = perf_cpu_map__get(pmu->cpus); 233 if (perf_cpu_map__is_empty(pmu_cpus)) { 234 if (perf_pmu__is_tool(pmu)) 235 pmu_cpus = tool_pmu__cpus(attr); 236 else 237 pmu_cpus = cpu_map__online(); 238 } 239 } else { 240 is_pmu_core = (attr->type == PERF_TYPE_HARDWARE || 241 attr->type == PERF_TYPE_HW_CACHE); 242 pmu_cpus = is_pmu_core ? cpu_map__online() : NULL; 243 } 244 245 if (has_user_cpus) 246 cpus = perf_cpu_map__get(user_cpus); 247 else 248 cpus = perf_cpu_map__get(pmu_cpus); 249 250 if (init_attr) 251 event_attr_init(attr); 252 253 evsel = evsel__new_idx(attr, *idx); 254 if (!evsel) 255 goto out_err; 256 257 if (name) { 258 evsel->name = strdup(name); 259 if (!evsel->name) 260 goto out_err; 261 } 262 263 if (metric_id) { 264 evsel->metric_id = strdup(metric_id); 265 if (!evsel->metric_id) 266 goto out_err; 267 } 268 269 (*idx)++; 270 evsel->core.cpus = cpus; 271 evsel->core.pmu_cpus = pmu_cpus; 272 evsel->core.requires_cpu = pmu ? pmu->is_uncore : false; 273 evsel->core.is_pmu_core = is_pmu_core; 274 evsel->pmu = pmu; 275 evsel->alternate_hw_config = alternate_hw_config; 276 evsel->first_wildcard_match = first_wildcard_match; 277 278 if (config_terms) 279 list_splice_init(config_terms, &evsel->config_terms); 280 281 if (list) 282 list_add_tail(&evsel->core.node, list); 283 284 if (has_user_cpus) 285 evsel__warn_user_requested_cpus(evsel, user_cpus); 286 287 return evsel; 288 out_err: 289 perf_cpu_map__put(cpus); 290 perf_cpu_map__put(pmu_cpus); 291 zfree(&evsel->name); 292 zfree(&evsel->metric_id); 293 free(evsel); 294 return NULL; 295 } 296 297 struct evsel *parse_events__add_event(int idx, struct perf_event_attr *attr, 298 const char *name, const char *metric_id, 299 struct perf_pmu *pmu) 300 { 301 return __add_event(/*list=*/NULL, &idx, attr, /*init_attr=*/false, name, 302 metric_id, pmu, /*config_terms=*/NULL, 303 /*first_wildcard_match=*/NULL, /*cpu_list=*/NULL, 304 /*alternate_hw_config=*/PERF_COUNT_HW_MAX); 305 } 306 307 static int add_event(struct list_head *list, int *idx, 308 struct perf_event_attr *attr, const char *name, 309 const char *metric_id, struct list_head *config_terms, 310 u64 alternate_hw_config) 311 { 312 return __add_event(list, idx, attr, /*init_attr*/true, name, metric_id, 313 /*pmu=*/NULL, config_terms, 314 /*first_wildcard_match=*/NULL, /*cpu_list=*/NULL, 315 alternate_hw_config) ? 0 : -ENOMEM; 316 } 317 318 /** 319 * parse_aliases - search names for entries beginning or equalling str ignoring 320 * case. If mutliple entries in names match str then the longest 321 * is chosen. 322 * @str: The needle to look for. 323 * @names: The haystack to search. 324 * @size: The size of the haystack. 325 * @longest: Out argument giving the length of the matching entry. 326 */ 327 static int parse_aliases(const char *str, const char *const names[][EVSEL__MAX_ALIASES], int size, 328 int *longest) 329 { 330 *longest = -1; 331 for (int i = 0; i < size; i++) { 332 for (int j = 0; j < EVSEL__MAX_ALIASES && names[i][j]; j++) { 333 int n = strlen(names[i][j]); 334 335 if (n > *longest && !strncasecmp(str, names[i][j], n)) 336 *longest = n; 337 } 338 if (*longest > 0) 339 return i; 340 } 341 342 return -1; 343 } 344 345 typedef int config_term_func_t(struct perf_event_attr *attr, 346 struct parse_events_term *term, 347 struct parse_events_state *parse_state); 348 static int config_term_common(struct perf_event_attr *attr, 349 struct parse_events_term *term, 350 struct parse_events_state *parse_state); 351 static int config_attr(struct perf_event_attr *attr, 352 const struct parse_events_terms *head, 353 struct parse_events_state *parse_state, 354 config_term_func_t config_term); 355 356 /** 357 * parse_events__decode_legacy_cache - Search name for the legacy cache event 358 * name composed of 1, 2 or 3 hyphen 359 * separated sections. The first section is 360 * the cache type while the others are the 361 * optional op and optional result. To make 362 * life hard the names in the table also 363 * contain hyphens and the longest name 364 * should always be selected. 365 */ 366 int parse_events__decode_legacy_cache(const char *name, int extended_pmu_type, __u64 *config) 367 { 368 int len, cache_type = -1, cache_op = -1, cache_result = -1; 369 const char *name_end = &name[strlen(name) + 1]; 370 const char *str = name; 371 372 cache_type = parse_aliases(str, evsel__hw_cache, PERF_COUNT_HW_CACHE_MAX, &len); 373 if (cache_type == -1) 374 return -EINVAL; 375 str += len + 1; 376 377 if (str < name_end) { 378 cache_op = parse_aliases(str, evsel__hw_cache_op, 379 PERF_COUNT_HW_CACHE_OP_MAX, &len); 380 if (cache_op >= 0) { 381 if (!evsel__is_cache_op_valid(cache_type, cache_op)) 382 return -EINVAL; 383 str += len + 1; 384 } else { 385 cache_result = parse_aliases(str, evsel__hw_cache_result, 386 PERF_COUNT_HW_CACHE_RESULT_MAX, &len); 387 if (cache_result >= 0) 388 str += len + 1; 389 } 390 } 391 if (str < name_end) { 392 if (cache_op < 0) { 393 cache_op = parse_aliases(str, evsel__hw_cache_op, 394 PERF_COUNT_HW_CACHE_OP_MAX, &len); 395 if (cache_op >= 0) { 396 if (!evsel__is_cache_op_valid(cache_type, cache_op)) 397 return -EINVAL; 398 } 399 } else if (cache_result < 0) { 400 cache_result = parse_aliases(str, evsel__hw_cache_result, 401 PERF_COUNT_HW_CACHE_RESULT_MAX, &len); 402 } 403 } 404 405 /* 406 * Fall back to reads: 407 */ 408 if (cache_op == -1) 409 cache_op = PERF_COUNT_HW_CACHE_OP_READ; 410 411 /* 412 * Fall back to accesses: 413 */ 414 if (cache_result == -1) 415 cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS; 416 417 *config = cache_type | (cache_op << 8) | (cache_result << 16); 418 if (perf_pmus__supports_extended_type()) 419 *config |= (__u64)extended_pmu_type << PERF_PMU_TYPE_SHIFT; 420 return 0; 421 } 422 423 /** 424 * parse_events__filter_pmu - returns false if a wildcard PMU should be 425 * considered, true if it should be filtered. 426 */ 427 bool parse_events__filter_pmu(const struct parse_events_state *parse_state, 428 const struct perf_pmu *pmu) 429 { 430 if (parse_state->pmu_filter == NULL) 431 return false; 432 433 return strcmp(parse_state->pmu_filter, pmu->name) != 0; 434 } 435 436 static int parse_events_add_pmu(struct parse_events_state *parse_state, 437 struct list_head *list, struct perf_pmu *pmu, 438 const struct parse_events_terms *const_parsed_terms, 439 struct evsel *first_wildcard_match); 440 441 static void tracepoint_error(struct parse_events_error *e, int err, 442 const char *sys, const char *name, int column) 443 { 444 const char *str; 445 char help[BUFSIZ]; 446 447 if (!e) 448 return; 449 450 /* 451 * We get error directly from syscall errno ( > 0), 452 * or from encoded pointer's error ( < 0). 453 */ 454 err = abs(err); 455 456 switch (err) { 457 case EACCES: 458 str = "can't access trace events"; 459 break; 460 case ENOENT: 461 str = "unknown tracepoint"; 462 break; 463 default: 464 str = "failed to add tracepoint"; 465 break; 466 } 467 468 tracing_path__strerror_open_tp(err, help, sizeof(help), sys, name); 469 parse_events_error__handle(e, column, strdup(str), strdup(help)); 470 } 471 472 static int add_tracepoint(struct parse_events_state *parse_state, 473 struct list_head *list, 474 const char *sys_name, const char *evt_name, 475 struct parse_events_error *err, 476 struct parse_events_terms *head_config, void *loc_) 477 { 478 YYLTYPE *loc = loc_; 479 struct evsel *evsel = evsel__newtp_idx(sys_name, evt_name, parse_state->idx++, 480 !parse_state->fake_tp); 481 482 if (IS_ERR(evsel)) { 483 tracepoint_error(err, PTR_ERR(evsel), sys_name, evt_name, loc->first_column); 484 return PTR_ERR(evsel); 485 } 486 487 if (head_config) { 488 LIST_HEAD(config_terms); 489 490 if (get_config_terms(head_config, &config_terms)) 491 return -ENOMEM; 492 list_splice(&config_terms, &evsel->config_terms); 493 } 494 495 list_add_tail(&evsel->core.node, list); 496 return 0; 497 } 498 499 struct add_tracepoint_multi_args { 500 struct parse_events_state *parse_state; 501 struct list_head *list; 502 const char *sys_glob; 503 const char *evt_glob; 504 struct parse_events_error *err; 505 struct parse_events_terms *head_config; 506 YYLTYPE *loc; 507 int found; 508 }; 509 510 static int add_tracepoint_multi_event_cb(void *state, const char *sys_name, const char *evt_name) 511 { 512 struct add_tracepoint_multi_args *args = state; 513 int ret; 514 515 if (!strglobmatch(evt_name, args->evt_glob)) 516 return 0; 517 518 args->found++; 519 ret = add_tracepoint(args->parse_state, args->list, sys_name, evt_name, 520 args->err, args->head_config, args->loc); 521 522 return ret; 523 } 524 525 static int add_tracepoint_multi_event(struct add_tracepoint_multi_args *args, const char *sys_name) 526 { 527 if (strpbrk(args->evt_glob, "*?") == NULL) { 528 /* Not a glob. */ 529 args->found++; 530 return add_tracepoint(args->parse_state, args->list, sys_name, args->evt_glob, 531 args->err, args->head_config, args->loc); 532 } 533 534 return tp_pmu__for_each_tp_event(sys_name, args, add_tracepoint_multi_event_cb); 535 } 536 537 static int add_tracepoint_multi_sys_cb(void *state, const char *sys_name) 538 { 539 struct add_tracepoint_multi_args *args = state; 540 541 if (!strglobmatch(sys_name, args->sys_glob)) 542 return 0; 543 544 return add_tracepoint_multi_event(args, sys_name); 545 } 546 547 static int add_tracepoint_multi_sys(struct parse_events_state *parse_state, 548 struct list_head *list, 549 const char *sys_glob, const char *evt_glob, 550 struct parse_events_error *err, 551 struct parse_events_terms *head_config, YYLTYPE *loc) 552 { 553 struct add_tracepoint_multi_args args = { 554 .parse_state = parse_state, 555 .list = list, 556 .sys_glob = sys_glob, 557 .evt_glob = evt_glob, 558 .err = err, 559 .head_config = head_config, 560 .loc = loc, 561 .found = 0, 562 }; 563 int ret; 564 565 if (strpbrk(sys_glob, "*?") == NULL) { 566 /* Not a glob. */ 567 ret = add_tracepoint_multi_event(&args, sys_glob); 568 } else { 569 ret = tp_pmu__for_each_tp_sys(&args, add_tracepoint_multi_sys_cb); 570 } 571 if (args.found == 0) { 572 tracepoint_error(err, ENOENT, sys_glob, evt_glob, loc->first_column); 573 return -ENOENT; 574 } 575 return ret; 576 } 577 578 size_t default_breakpoint_len(void) 579 { 580 #if defined(__i386__) 581 static int len; 582 583 if (len == 0) { 584 struct perf_env env = {}; 585 586 perf_env__init(&env); 587 len = perf_env__kernel_is_64_bit(&env) ? sizeof(u64) : sizeof(long); 588 perf_env__exit(&env); 589 } 590 return len; 591 #elif defined(__aarch64__) 592 return 4; 593 #else 594 return sizeof(long); 595 #endif 596 } 597 598 static int 599 parse_breakpoint_type(const char *type, struct perf_event_attr *attr) 600 { 601 int i; 602 603 for (i = 0; i < 3; i++) { 604 if (!type || !type[i]) 605 break; 606 607 #define CHECK_SET_TYPE(bit) \ 608 do { \ 609 if (attr->bp_type & bit) \ 610 return -EINVAL; \ 611 else \ 612 attr->bp_type |= bit; \ 613 } while (0) 614 615 switch (type[i]) { 616 case 'r': 617 CHECK_SET_TYPE(HW_BREAKPOINT_R); 618 break; 619 case 'w': 620 CHECK_SET_TYPE(HW_BREAKPOINT_W); 621 break; 622 case 'x': 623 CHECK_SET_TYPE(HW_BREAKPOINT_X); 624 break; 625 default: 626 return -EINVAL; 627 } 628 } 629 630 #undef CHECK_SET_TYPE 631 632 if (!attr->bp_type) /* Default */ 633 attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W; 634 635 return 0; 636 } 637 638 int parse_events_add_breakpoint(struct parse_events_state *parse_state, 639 struct list_head *list, 640 u64 addr, char *type, u64 len, 641 struct parse_events_terms *head_config) 642 { 643 struct perf_event_attr attr; 644 LIST_HEAD(config_terms); 645 const char *name; 646 647 memset(&attr, 0, sizeof(attr)); 648 attr.bp_addr = addr; 649 650 if (parse_breakpoint_type(type, &attr)) 651 return -EINVAL; 652 653 /* Provide some defaults if len is not specified */ 654 if (!len) { 655 if (attr.bp_type == HW_BREAKPOINT_X) 656 len = default_breakpoint_len(); 657 else 658 len = HW_BREAKPOINT_LEN_4; 659 } 660 661 attr.bp_len = len; 662 663 attr.type = PERF_TYPE_BREAKPOINT; 664 attr.sample_period = 1; 665 666 if (head_config) { 667 if (config_attr(&attr, head_config, parse_state, config_term_common)) 668 return -EINVAL; 669 670 if (get_config_terms(head_config, &config_terms)) 671 return -ENOMEM; 672 } 673 674 name = get_config_name(head_config); 675 676 return add_event(list, &parse_state->idx, &attr, name, /*mertic_id=*/NULL, 677 &config_terms, /*alternate_hw_config=*/PERF_COUNT_HW_MAX); 678 } 679 680 static int check_type_val(struct parse_events_term *term, 681 struct parse_events_error *err, 682 enum parse_events__term_val_type type) 683 { 684 if (type == term->type_val) 685 return 0; 686 687 if (err) { 688 parse_events_error__handle(err, term->err_val, 689 type == PARSE_EVENTS__TERM_TYPE_NUM 690 ? strdup("expected numeric value") 691 : strdup("expected string value"), 692 NULL); 693 } 694 return -EINVAL; 695 } 696 697 static bool config_term_shrinked; 698 699 const char *parse_events__term_type_str(enum parse_events__term_type term_type) 700 { 701 /* 702 * Update according to parse-events.l 703 */ 704 static const char *config_term_names[__PARSE_EVENTS__TERM_TYPE_NR] = { 705 [PARSE_EVENTS__TERM_TYPE_USER] = "<sysfs term>", 706 [PARSE_EVENTS__TERM_TYPE_CONFIG] = "config", 707 [PARSE_EVENTS__TERM_TYPE_CONFIG1] = "config1", 708 [PARSE_EVENTS__TERM_TYPE_CONFIG2] = "config2", 709 [PARSE_EVENTS__TERM_TYPE_CONFIG3] = "config3", 710 [PARSE_EVENTS__TERM_TYPE_CONFIG4] = "config4", 711 [PARSE_EVENTS__TERM_TYPE_NAME] = "name", 712 [PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD] = "period", 713 [PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ] = "freq", 714 [PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE] = "branch_type", 715 [PARSE_EVENTS__TERM_TYPE_TIME] = "time", 716 [PARSE_EVENTS__TERM_TYPE_CALLGRAPH] = "call-graph", 717 [PARSE_EVENTS__TERM_TYPE_STACKSIZE] = "stack-size", 718 [PARSE_EVENTS__TERM_TYPE_NOINHERIT] = "no-inherit", 719 [PARSE_EVENTS__TERM_TYPE_INHERIT] = "inherit", 720 [PARSE_EVENTS__TERM_TYPE_MAX_STACK] = "max-stack", 721 [PARSE_EVENTS__TERM_TYPE_MAX_EVENTS] = "nr", 722 [PARSE_EVENTS__TERM_TYPE_OVERWRITE] = "overwrite", 723 [PARSE_EVENTS__TERM_TYPE_NOOVERWRITE] = "no-overwrite", 724 [PARSE_EVENTS__TERM_TYPE_DRV_CFG] = "driver-config", 725 [PARSE_EVENTS__TERM_TYPE_PERCORE] = "percore", 726 [PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT] = "aux-output", 727 [PARSE_EVENTS__TERM_TYPE_AUX_ACTION] = "aux-action", 728 [PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE] = "aux-sample-size", 729 [PARSE_EVENTS__TERM_TYPE_METRIC_ID] = "metric-id", 730 [PARSE_EVENTS__TERM_TYPE_RAW] = "raw", 731 [PARSE_EVENTS__TERM_TYPE_LEGACY_HARDWARE_CONFIG] = "legacy-hardware-config", 732 [PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE_CONFIG] = "legacy-cache-config", 733 [PARSE_EVENTS__TERM_TYPE_CPU] = "cpu", 734 [PARSE_EVENTS__TERM_TYPE_RATIO_TO_PREV] = "ratio-to-prev", 735 }; 736 if ((unsigned int)term_type >= __PARSE_EVENTS__TERM_TYPE_NR) 737 return "unknown term"; 738 739 return config_term_names[term_type]; 740 } 741 742 static bool 743 config_term_avail(enum parse_events__term_type term_type, struct parse_events_error *err) 744 { 745 char *err_str; 746 747 if (term_type < 0 || term_type >= __PARSE_EVENTS__TERM_TYPE_NR) { 748 parse_events_error__handle(err, -1, 749 strdup("Invalid term_type"), NULL); 750 return false; 751 } 752 if (!config_term_shrinked) 753 return true; 754 755 switch (term_type) { 756 case PARSE_EVENTS__TERM_TYPE_CONFIG: 757 case PARSE_EVENTS__TERM_TYPE_CONFIG1: 758 case PARSE_EVENTS__TERM_TYPE_CONFIG2: 759 case PARSE_EVENTS__TERM_TYPE_CONFIG3: 760 case PARSE_EVENTS__TERM_TYPE_CONFIG4: 761 case PARSE_EVENTS__TERM_TYPE_NAME: 762 case PARSE_EVENTS__TERM_TYPE_METRIC_ID: 763 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD: 764 case PARSE_EVENTS__TERM_TYPE_PERCORE: 765 case PARSE_EVENTS__TERM_TYPE_CPU: 766 return true; 767 case PARSE_EVENTS__TERM_TYPE_USER: 768 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ: 769 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE: 770 case PARSE_EVENTS__TERM_TYPE_TIME: 771 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH: 772 case PARSE_EVENTS__TERM_TYPE_STACKSIZE: 773 case PARSE_EVENTS__TERM_TYPE_NOINHERIT: 774 case PARSE_EVENTS__TERM_TYPE_INHERIT: 775 case PARSE_EVENTS__TERM_TYPE_MAX_STACK: 776 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS: 777 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE: 778 case PARSE_EVENTS__TERM_TYPE_OVERWRITE: 779 case PARSE_EVENTS__TERM_TYPE_DRV_CFG: 780 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT: 781 case PARSE_EVENTS__TERM_TYPE_AUX_ACTION: 782 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE: 783 case PARSE_EVENTS__TERM_TYPE_RAW: 784 case PARSE_EVENTS__TERM_TYPE_RATIO_TO_PREV: 785 case PARSE_EVENTS__TERM_TYPE_LEGACY_HARDWARE_CONFIG: 786 case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE_CONFIG: 787 default: 788 if (!err) 789 return false; 790 791 /* term_type is validated so indexing is safe */ 792 if (asprintf(&err_str, "'%s' is not usable in 'perf stat'", 793 parse_events__term_type_str(term_type)) >= 0) 794 parse_events_error__handle(err, -1, err_str, NULL); 795 return false; 796 } 797 } 798 799 void parse_events__shrink_config_terms(void) 800 { 801 config_term_shrinked = true; 802 } 803 804 static int config_term_common(struct perf_event_attr *attr, 805 struct parse_events_term *term, 806 struct parse_events_state *parse_state) 807 { 808 #define CHECK_TYPE_VAL(type) \ 809 do { \ 810 if (check_type_val(term, parse_state->error, PARSE_EVENTS__TERM_TYPE_ ## type)) \ 811 return -EINVAL; \ 812 } while (0) 813 814 switch (term->type_term) { 815 case PARSE_EVENTS__TERM_TYPE_CONFIG: 816 CHECK_TYPE_VAL(NUM); 817 attr->config = term->val.num; 818 break; 819 case PARSE_EVENTS__TERM_TYPE_CONFIG1: 820 CHECK_TYPE_VAL(NUM); 821 attr->config1 = term->val.num; 822 break; 823 case PARSE_EVENTS__TERM_TYPE_CONFIG2: 824 CHECK_TYPE_VAL(NUM); 825 attr->config2 = term->val.num; 826 break; 827 case PARSE_EVENTS__TERM_TYPE_CONFIG3: 828 CHECK_TYPE_VAL(NUM); 829 attr->config3 = term->val.num; 830 break; 831 case PARSE_EVENTS__TERM_TYPE_CONFIG4: 832 CHECK_TYPE_VAL(NUM); 833 attr->config4 = term->val.num; 834 break; 835 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD: 836 CHECK_TYPE_VAL(NUM); 837 break; 838 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ: 839 CHECK_TYPE_VAL(NUM); 840 break; 841 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE: 842 CHECK_TYPE_VAL(STR); 843 if (strcmp(term->val.str, "no") && 844 parse_branch_str(term->val.str, 845 &attr->branch_sample_type)) { 846 parse_events_error__handle(parse_state->error, term->err_val, 847 strdup("invalid branch sample type"), 848 NULL); 849 return -EINVAL; 850 } 851 break; 852 case PARSE_EVENTS__TERM_TYPE_TIME: 853 CHECK_TYPE_VAL(NUM); 854 if (term->val.num > 1) { 855 parse_events_error__handle(parse_state->error, term->err_val, 856 strdup("expected 0 or 1"), 857 NULL); 858 return -EINVAL; 859 } 860 break; 861 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH: 862 CHECK_TYPE_VAL(STR); 863 break; 864 case PARSE_EVENTS__TERM_TYPE_STACKSIZE: 865 CHECK_TYPE_VAL(NUM); 866 break; 867 case PARSE_EVENTS__TERM_TYPE_INHERIT: 868 CHECK_TYPE_VAL(NUM); 869 break; 870 case PARSE_EVENTS__TERM_TYPE_NOINHERIT: 871 CHECK_TYPE_VAL(NUM); 872 break; 873 case PARSE_EVENTS__TERM_TYPE_OVERWRITE: 874 CHECK_TYPE_VAL(NUM); 875 break; 876 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE: 877 CHECK_TYPE_VAL(NUM); 878 break; 879 case PARSE_EVENTS__TERM_TYPE_NAME: 880 CHECK_TYPE_VAL(STR); 881 break; 882 case PARSE_EVENTS__TERM_TYPE_METRIC_ID: 883 CHECK_TYPE_VAL(STR); 884 break; 885 case PARSE_EVENTS__TERM_TYPE_RAW: 886 CHECK_TYPE_VAL(STR); 887 break; 888 case PARSE_EVENTS__TERM_TYPE_MAX_STACK: 889 CHECK_TYPE_VAL(NUM); 890 break; 891 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS: 892 CHECK_TYPE_VAL(NUM); 893 break; 894 case PARSE_EVENTS__TERM_TYPE_PERCORE: 895 CHECK_TYPE_VAL(NUM); 896 if ((unsigned int)term->val.num > 1) { 897 parse_events_error__handle(parse_state->error, term->err_val, 898 strdup("expected 0 or 1"), 899 NULL); 900 return -EINVAL; 901 } 902 break; 903 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT: 904 CHECK_TYPE_VAL(NUM); 905 break; 906 case PARSE_EVENTS__TERM_TYPE_AUX_ACTION: 907 CHECK_TYPE_VAL(STR); 908 break; 909 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE: 910 CHECK_TYPE_VAL(NUM); 911 if (term->val.num > UINT_MAX) { 912 parse_events_error__handle(parse_state->error, term->err_val, 913 strdup("too big"), 914 NULL); 915 return -EINVAL; 916 } 917 break; 918 case PARSE_EVENTS__TERM_TYPE_CPU: { 919 struct perf_cpu_map *map; 920 921 if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) { 922 if (term->val.num >= (u64)cpu__max_present_cpu().cpu) { 923 parse_events_error__handle(parse_state->error, term->err_val, 924 strdup("too big"), 925 /*help=*/NULL); 926 return -EINVAL; 927 } 928 break; 929 } 930 assert(term->type_val == PARSE_EVENTS__TERM_TYPE_STR); 931 if (perf_pmus__find(term->val.str) != NULL) 932 break; 933 934 map = perf_cpu_map__new(term->val.str); 935 if (!map && !parse_state->fake_pmu) { 936 parse_events_error__handle(parse_state->error, term->err_val, 937 strdup("not a valid PMU or CPU number"), 938 /*help=*/NULL); 939 return -EINVAL; 940 } 941 perf_cpu_map__put(map); 942 break; 943 } 944 case PARSE_EVENTS__TERM_TYPE_RATIO_TO_PREV: 945 CHECK_TYPE_VAL(STR); 946 if (strtod(term->val.str, NULL) <= 0) { 947 parse_events_error__handle(parse_state->error, term->err_val, 948 strdup("zero or negative"), 949 NULL); 950 return -EINVAL; 951 } 952 if (errno == ERANGE) { 953 parse_events_error__handle(parse_state->error, term->err_val, 954 strdup("too big"), 955 NULL); 956 return -EINVAL; 957 } 958 break; 959 case PARSE_EVENTS__TERM_TYPE_DRV_CFG: 960 case PARSE_EVENTS__TERM_TYPE_USER: 961 case PARSE_EVENTS__TERM_TYPE_LEGACY_HARDWARE_CONFIG: 962 case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE_CONFIG: 963 default: 964 parse_events_error__handle(parse_state->error, term->err_term, 965 strdup(parse_events__term_type_str(term->type_term)), 966 parse_events_formats_error_string(NULL)); 967 return -EINVAL; 968 } 969 970 /* 971 * Check term availability after basic checking so 972 * PARSE_EVENTS__TERM_TYPE_USER can be found and filtered. 973 * 974 * If check availability at the entry of this function, 975 * user will see "'<sysfs term>' is not usable in 'perf stat'" 976 * if an invalid config term is provided for legacy events 977 * (for example, instructions/badterm/...), which is confusing. 978 */ 979 if (!config_term_avail(term->type_term, parse_state->error)) 980 return -EINVAL; 981 return 0; 982 #undef CHECK_TYPE_VAL 983 } 984 985 static bool check_pmu_is_core(__u32 type, const struct parse_events_term *term, 986 struct parse_events_error *err) 987 { 988 struct perf_pmu *pmu = NULL; 989 990 /* Avoid loading all PMUs with perf_pmus__find_by_type, just scan the core ones. */ 991 while ((pmu = perf_pmus__scan_core(pmu)) != NULL) { 992 if (pmu->type == type) 993 return true; 994 } 995 parse_events_error__handle(err, term->err_val, 996 strdup("needs a core PMU"), 997 NULL); 998 return false; 999 } 1000 1001 static int config_term_pmu(struct perf_event_attr *attr, 1002 struct parse_events_term *term, 1003 struct parse_events_state *parse_state) 1004 { 1005 if (term->type_term == PARSE_EVENTS__TERM_TYPE_LEGACY_HARDWARE_CONFIG) { 1006 if (check_type_val(term, parse_state->error, PARSE_EVENTS__TERM_TYPE_NUM)) 1007 return -EINVAL; 1008 if (term->val.num >= PERF_COUNT_HW_MAX) { 1009 parse_events_error__handle(parse_state->error, term->err_val, 1010 strdup("too big"), 1011 NULL); 1012 return -EINVAL; 1013 } 1014 if (!check_pmu_is_core(attr->type, term, parse_state->error)) 1015 return -EINVAL; 1016 attr->config = term->val.num; 1017 if (perf_pmus__supports_extended_type()) 1018 attr->config |= (__u64)attr->type << PERF_PMU_TYPE_SHIFT; 1019 attr->type = PERF_TYPE_HARDWARE; 1020 return 0; 1021 } 1022 if (term->type_term == PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE_CONFIG) { 1023 int cache_type, cache_op, cache_result; 1024 1025 if (check_type_val(term, parse_state->error, PARSE_EVENTS__TERM_TYPE_NUM)) 1026 return -EINVAL; 1027 cache_type = term->val.num & 0xFF; 1028 cache_op = (term->val.num >> 8) & 0xFF; 1029 cache_result = (term->val.num >> 16) & 0xFF; 1030 if ((term->val.num & ~0xFFFFFF) || 1031 cache_type >= PERF_COUNT_HW_CACHE_MAX || 1032 cache_op >= PERF_COUNT_HW_CACHE_OP_MAX || 1033 cache_result >= PERF_COUNT_HW_CACHE_RESULT_MAX) { 1034 parse_events_error__handle(parse_state->error, term->err_val, 1035 strdup("too big"), 1036 NULL); 1037 return -EINVAL; 1038 } 1039 if (!check_pmu_is_core(attr->type, term, parse_state->error)) 1040 return -EINVAL; 1041 attr->config = term->val.num; 1042 if (perf_pmus__supports_extended_type()) 1043 attr->config |= (__u64)attr->type << PERF_PMU_TYPE_SHIFT; 1044 attr->type = PERF_TYPE_HW_CACHE; 1045 return 0; 1046 } 1047 if (term->type_term == PARSE_EVENTS__TERM_TYPE_USER || 1048 term->type_term == PARSE_EVENTS__TERM_TYPE_DRV_CFG) { 1049 /* 1050 * Always succeed for sysfs terms, as we dont know 1051 * at this point what type they need to have. 1052 */ 1053 return 0; 1054 } 1055 return config_term_common(attr, term, parse_state); 1056 } 1057 1058 static int config_term_tracepoint(struct perf_event_attr *attr, 1059 struct parse_events_term *term, 1060 struct parse_events_state *parse_state) 1061 { 1062 switch (term->type_term) { 1063 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH: 1064 case PARSE_EVENTS__TERM_TYPE_STACKSIZE: 1065 case PARSE_EVENTS__TERM_TYPE_INHERIT: 1066 case PARSE_EVENTS__TERM_TYPE_NOINHERIT: 1067 case PARSE_EVENTS__TERM_TYPE_MAX_STACK: 1068 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS: 1069 case PARSE_EVENTS__TERM_TYPE_OVERWRITE: 1070 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE: 1071 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT: 1072 case PARSE_EVENTS__TERM_TYPE_AUX_ACTION: 1073 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE: 1074 return config_term_common(attr, term, parse_state); 1075 case PARSE_EVENTS__TERM_TYPE_USER: 1076 case PARSE_EVENTS__TERM_TYPE_CONFIG: 1077 case PARSE_EVENTS__TERM_TYPE_CONFIG1: 1078 case PARSE_EVENTS__TERM_TYPE_CONFIG2: 1079 case PARSE_EVENTS__TERM_TYPE_CONFIG3: 1080 case PARSE_EVENTS__TERM_TYPE_CONFIG4: 1081 case PARSE_EVENTS__TERM_TYPE_LEGACY_HARDWARE_CONFIG: 1082 case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE_CONFIG: 1083 case PARSE_EVENTS__TERM_TYPE_NAME: 1084 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD: 1085 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ: 1086 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE: 1087 case PARSE_EVENTS__TERM_TYPE_TIME: 1088 case PARSE_EVENTS__TERM_TYPE_DRV_CFG: 1089 case PARSE_EVENTS__TERM_TYPE_PERCORE: 1090 case PARSE_EVENTS__TERM_TYPE_METRIC_ID: 1091 case PARSE_EVENTS__TERM_TYPE_RAW: 1092 case PARSE_EVENTS__TERM_TYPE_CPU: 1093 case PARSE_EVENTS__TERM_TYPE_RATIO_TO_PREV: 1094 default: 1095 parse_events_error__handle(parse_state->error, term->err_term, 1096 strdup(parse_events__term_type_str(term->type_term)), 1097 strdup("valid terms: call-graph,stack-size\n") 1098 ); 1099 return -EINVAL; 1100 } 1101 1102 return 0; 1103 } 1104 1105 static int config_attr(struct perf_event_attr *attr, 1106 const struct parse_events_terms *head, 1107 struct parse_events_state *parse_state, 1108 config_term_func_t config_term) 1109 { 1110 struct parse_events_term *term; 1111 1112 list_for_each_entry(term, &head->terms, list) 1113 if (config_term(attr, term, parse_state)) 1114 return -EINVAL; 1115 1116 return 0; 1117 } 1118 1119 static int get_config_terms(const struct parse_events_terms *head_config, 1120 struct list_head *head_terms) 1121 { 1122 #define ADD_CONFIG_TERM(__type, __weak) \ 1123 struct evsel_config_term *__t; \ 1124 \ 1125 __t = zalloc(sizeof(*__t)); \ 1126 if (!__t) \ 1127 return -ENOMEM; \ 1128 \ 1129 INIT_LIST_HEAD(&__t->list); \ 1130 __t->type = EVSEL__CONFIG_TERM_ ## __type; \ 1131 __t->weak = __weak; \ 1132 list_add_tail(&__t->list, head_terms) 1133 1134 #define ADD_CONFIG_TERM_VAL(__type, __name, __val, __weak) \ 1135 do { \ 1136 ADD_CONFIG_TERM(__type, __weak); \ 1137 __t->val.__name = __val; \ 1138 } while (0) 1139 1140 #define ADD_CONFIG_TERM_STR(__type, __val, __weak) \ 1141 do { \ 1142 ADD_CONFIG_TERM(__type, __weak); \ 1143 __t->val.str = strdup(__val); \ 1144 if (!__t->val.str) { \ 1145 zfree(&__t); \ 1146 return -ENOMEM; \ 1147 } \ 1148 __t->free_str = true; \ 1149 } while (0) 1150 1151 struct parse_events_term *term; 1152 1153 list_for_each_entry(term, &head_config->terms, list) { 1154 switch (term->type_term) { 1155 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD: 1156 ADD_CONFIG_TERM_VAL(PERIOD, period, term->val.num, term->weak); 1157 break; 1158 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ: 1159 ADD_CONFIG_TERM_VAL(FREQ, freq, term->val.num, term->weak); 1160 break; 1161 case PARSE_EVENTS__TERM_TYPE_TIME: 1162 ADD_CONFIG_TERM_VAL(TIME, time, term->val.num, term->weak); 1163 break; 1164 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH: 1165 ADD_CONFIG_TERM_STR(CALLGRAPH, term->val.str, term->weak); 1166 break; 1167 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE: 1168 ADD_CONFIG_TERM_STR(BRANCH, term->val.str, term->weak); 1169 break; 1170 case PARSE_EVENTS__TERM_TYPE_STACKSIZE: 1171 ADD_CONFIG_TERM_VAL(STACK_USER, stack_user, 1172 term->val.num, term->weak); 1173 break; 1174 case PARSE_EVENTS__TERM_TYPE_INHERIT: 1175 ADD_CONFIG_TERM_VAL(INHERIT, inherit, 1176 term->val.num ? 1 : 0, term->weak); 1177 break; 1178 case PARSE_EVENTS__TERM_TYPE_NOINHERIT: 1179 ADD_CONFIG_TERM_VAL(INHERIT, inherit, 1180 term->val.num ? 0 : 1, term->weak); 1181 break; 1182 case PARSE_EVENTS__TERM_TYPE_MAX_STACK: 1183 ADD_CONFIG_TERM_VAL(MAX_STACK, max_stack, 1184 term->val.num, term->weak); 1185 break; 1186 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS: 1187 ADD_CONFIG_TERM_VAL(MAX_EVENTS, max_events, 1188 term->val.num, term->weak); 1189 break; 1190 case PARSE_EVENTS__TERM_TYPE_OVERWRITE: 1191 ADD_CONFIG_TERM_VAL(OVERWRITE, overwrite, 1192 term->val.num ? 1 : 0, term->weak); 1193 break; 1194 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE: 1195 ADD_CONFIG_TERM_VAL(OVERWRITE, overwrite, 1196 term->val.num ? 0 : 1, term->weak); 1197 break; 1198 case PARSE_EVENTS__TERM_TYPE_DRV_CFG: 1199 ADD_CONFIG_TERM_STR(DRV_CFG, term->val.str, term->weak); 1200 break; 1201 case PARSE_EVENTS__TERM_TYPE_PERCORE: 1202 ADD_CONFIG_TERM_VAL(PERCORE, percore, 1203 term->val.num ? true : false, term->weak); 1204 break; 1205 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT: 1206 ADD_CONFIG_TERM_VAL(AUX_OUTPUT, aux_output, 1207 term->val.num ? 1 : 0, term->weak); 1208 break; 1209 case PARSE_EVENTS__TERM_TYPE_AUX_ACTION: 1210 ADD_CONFIG_TERM_STR(AUX_ACTION, term->val.str, term->weak); 1211 break; 1212 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE: 1213 ADD_CONFIG_TERM_VAL(AUX_SAMPLE_SIZE, aux_sample_size, 1214 term->val.num, term->weak); 1215 break; 1216 case PARSE_EVENTS__TERM_TYPE_RATIO_TO_PREV: 1217 ADD_CONFIG_TERM_STR(RATIO_TO_PREV, term->val.str, term->weak); 1218 break; 1219 case PARSE_EVENTS__TERM_TYPE_USER: 1220 case PARSE_EVENTS__TERM_TYPE_CONFIG: 1221 case PARSE_EVENTS__TERM_TYPE_CONFIG1: 1222 case PARSE_EVENTS__TERM_TYPE_CONFIG2: 1223 case PARSE_EVENTS__TERM_TYPE_CONFIG3: 1224 case PARSE_EVENTS__TERM_TYPE_CONFIG4: 1225 case PARSE_EVENTS__TERM_TYPE_LEGACY_HARDWARE_CONFIG: 1226 case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE_CONFIG: 1227 case PARSE_EVENTS__TERM_TYPE_NAME: 1228 case PARSE_EVENTS__TERM_TYPE_METRIC_ID: 1229 case PARSE_EVENTS__TERM_TYPE_RAW: 1230 case PARSE_EVENTS__TERM_TYPE_CPU: 1231 default: 1232 break; 1233 } 1234 } 1235 return 0; 1236 } 1237 1238 /* 1239 * Add EVSEL__CONFIG_TERM_CFG_CHG where cfg_chg will have a bit set for 1240 * each bit of attr->config that the user has changed. 1241 */ 1242 static int get_config_chgs(struct perf_pmu *pmu, struct parse_events_terms *head_config, 1243 struct list_head *head_terms) 1244 { 1245 struct parse_events_term *term; 1246 u64 bits = 0; 1247 int type; 1248 1249 list_for_each_entry(term, &head_config->terms, list) { 1250 switch (term->type_term) { 1251 case PARSE_EVENTS__TERM_TYPE_USER: 1252 type = perf_pmu__format_type(pmu, term->config); 1253 if (type != PERF_PMU_FORMAT_VALUE_CONFIG) 1254 continue; 1255 bits |= perf_pmu__format_bits(pmu, term->config); 1256 break; 1257 case PARSE_EVENTS__TERM_TYPE_CONFIG: 1258 bits = ~(u64)0; 1259 break; 1260 case PARSE_EVENTS__TERM_TYPE_CONFIG1: 1261 case PARSE_EVENTS__TERM_TYPE_CONFIG2: 1262 case PARSE_EVENTS__TERM_TYPE_CONFIG3: 1263 case PARSE_EVENTS__TERM_TYPE_CONFIG4: 1264 case PARSE_EVENTS__TERM_TYPE_LEGACY_HARDWARE_CONFIG: 1265 case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE_CONFIG: 1266 case PARSE_EVENTS__TERM_TYPE_NAME: 1267 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD: 1268 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ: 1269 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE: 1270 case PARSE_EVENTS__TERM_TYPE_TIME: 1271 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH: 1272 case PARSE_EVENTS__TERM_TYPE_STACKSIZE: 1273 case PARSE_EVENTS__TERM_TYPE_NOINHERIT: 1274 case PARSE_EVENTS__TERM_TYPE_INHERIT: 1275 case PARSE_EVENTS__TERM_TYPE_MAX_STACK: 1276 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS: 1277 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE: 1278 case PARSE_EVENTS__TERM_TYPE_OVERWRITE: 1279 case PARSE_EVENTS__TERM_TYPE_DRV_CFG: 1280 case PARSE_EVENTS__TERM_TYPE_PERCORE: 1281 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT: 1282 case PARSE_EVENTS__TERM_TYPE_AUX_ACTION: 1283 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE: 1284 case PARSE_EVENTS__TERM_TYPE_METRIC_ID: 1285 case PARSE_EVENTS__TERM_TYPE_RAW: 1286 case PARSE_EVENTS__TERM_TYPE_CPU: 1287 case PARSE_EVENTS__TERM_TYPE_RATIO_TO_PREV: 1288 default: 1289 break; 1290 } 1291 } 1292 1293 if (bits) 1294 ADD_CONFIG_TERM_VAL(CFG_CHG, cfg_chg, bits, false); 1295 1296 #undef ADD_CONFIG_TERM 1297 return 0; 1298 } 1299 1300 int parse_events_add_tracepoint(struct parse_events_state *parse_state, 1301 struct list_head *list, 1302 const char *sys, const char *event, 1303 struct parse_events_error *err, 1304 struct parse_events_terms *head_config, void *loc_) 1305 { 1306 YYLTYPE *loc = loc_; 1307 1308 if (head_config) { 1309 struct perf_event_attr attr; 1310 1311 if (config_attr(&attr, head_config, parse_state, config_term_tracepoint)) 1312 return -EINVAL; 1313 } 1314 1315 return add_tracepoint_multi_sys(parse_state, list, sys, event, 1316 err, head_config, loc); 1317 } 1318 1319 static int __parse_events_add_numeric(struct parse_events_state *parse_state, 1320 struct list_head *list, 1321 struct perf_pmu *pmu, u32 type, u32 extended_type, 1322 u64 config, const struct parse_events_terms *head_config, 1323 struct evsel *first_wildcard_match) 1324 { 1325 struct perf_event_attr attr; 1326 LIST_HEAD(config_terms); 1327 const char *name, *metric_id; 1328 struct perf_cpu_map *cpus; 1329 int ret; 1330 1331 memset(&attr, 0, sizeof(attr)); 1332 attr.type = type; 1333 attr.config = config; 1334 if (extended_type && (type == PERF_TYPE_HARDWARE || type == PERF_TYPE_HW_CACHE)) { 1335 assert(perf_pmus__supports_extended_type()); 1336 attr.config |= (u64)extended_type << PERF_PMU_TYPE_SHIFT; 1337 } 1338 1339 if (head_config) { 1340 if (config_attr(&attr, head_config, parse_state, config_term_common)) 1341 return -EINVAL; 1342 1343 if (get_config_terms(head_config, &config_terms)) 1344 return -ENOMEM; 1345 } 1346 1347 name = get_config_name(head_config); 1348 metric_id = get_config_metric_id(head_config); 1349 cpus = get_config_cpu(head_config, parse_state->fake_pmu); 1350 ret = __add_event(list, &parse_state->idx, &attr, /*init_attr*/true, name, 1351 metric_id, pmu, &config_terms, first_wildcard_match, 1352 cpus, /*alternate_hw_config=*/PERF_COUNT_HW_MAX) ? 0 : -ENOMEM; 1353 perf_cpu_map__put(cpus); 1354 free_config_terms(&config_terms); 1355 return ret; 1356 } 1357 1358 int parse_events_add_numeric(struct parse_events_state *parse_state, 1359 struct list_head *list, 1360 u32 type, u64 config, 1361 const struct parse_events_terms *head_config, 1362 bool wildcard) 1363 { 1364 struct perf_pmu *pmu = NULL; 1365 bool found_supported = false; 1366 1367 /* Wildcards on numeric values are only supported by core PMUs. */ 1368 if (wildcard && perf_pmus__supports_extended_type()) { 1369 struct evsel *first_wildcard_match = NULL; 1370 while ((pmu = perf_pmus__scan_core(pmu)) != NULL) { 1371 int ret; 1372 1373 found_supported = true; 1374 if (parse_events__filter_pmu(parse_state, pmu)) 1375 continue; 1376 1377 ret = __parse_events_add_numeric(parse_state, list, pmu, 1378 type, pmu->type, 1379 config, head_config, 1380 first_wildcard_match); 1381 if (ret) 1382 return ret; 1383 if (first_wildcard_match == NULL) 1384 first_wildcard_match = 1385 container_of(list->prev, struct evsel, core.node); 1386 } 1387 if (found_supported) 1388 return 0; 1389 } 1390 return __parse_events_add_numeric(parse_state, list, perf_pmus__find_by_type(type), 1391 type, /*extended_type=*/0, config, head_config, 1392 /*first_wildcard_match=*/NULL); 1393 } 1394 1395 static bool config_term_percore(struct list_head *config_terms) 1396 { 1397 struct evsel_config_term *term; 1398 1399 list_for_each_entry(term, config_terms, list) { 1400 if (term->type == EVSEL__CONFIG_TERM_PERCORE) 1401 return term->val.percore; 1402 } 1403 1404 return false; 1405 } 1406 1407 static int parse_events_add_pmu(struct parse_events_state *parse_state, 1408 struct list_head *list, struct perf_pmu *pmu, 1409 const struct parse_events_terms *const_parsed_terms, 1410 struct evsel *first_wildcard_match) 1411 { 1412 u64 alternate_hw_config = PERF_COUNT_HW_MAX; 1413 struct perf_event_attr attr; 1414 struct perf_pmu_info info; 1415 struct evsel *evsel; 1416 struct parse_events_error *err = parse_state->error; 1417 LIST_HEAD(config_terms); 1418 struct parse_events_terms parsed_terms; 1419 bool alias_rewrote_terms = false; 1420 struct perf_cpu_map *term_cpu = NULL; 1421 1422 if (verbose > 1) { 1423 struct strbuf sb; 1424 1425 strbuf_init(&sb, /*hint=*/ 0); 1426 if (pmu->selectable && const_parsed_terms && 1427 list_empty(&const_parsed_terms->terms)) { 1428 strbuf_addf(&sb, "%s//", pmu->name); 1429 } else { 1430 strbuf_addf(&sb, "%s/", pmu->name); 1431 parse_events_terms__to_strbuf(const_parsed_terms, &sb); 1432 strbuf_addch(&sb, '/'); 1433 } 1434 fprintf(stderr, "Attempt to add: %s\n", sb.buf); 1435 strbuf_release(&sb); 1436 } 1437 1438 memset(&attr, 0, sizeof(attr)); 1439 if (pmu->perf_event_attr_init_default) 1440 pmu->perf_event_attr_init_default(pmu, &attr); 1441 1442 attr.type = pmu->type; 1443 1444 if (!const_parsed_terms || list_empty(&const_parsed_terms->terms)) { 1445 evsel = __add_event(list, &parse_state->idx, &attr, 1446 /*init_attr=*/true, /*name=*/NULL, 1447 /*metric_id=*/NULL, pmu, 1448 /*config_terms=*/NULL, first_wildcard_match, 1449 /*cpu_list=*/NULL, alternate_hw_config); 1450 return evsel ? 0 : -ENOMEM; 1451 } 1452 1453 parse_events_terms__init(&parsed_terms); 1454 if (const_parsed_terms) { 1455 int ret = parse_events_terms__copy(const_parsed_terms, &parsed_terms); 1456 1457 if (ret) 1458 return ret; 1459 } 1460 fix_raw(&parsed_terms, pmu); 1461 1462 /* Configure attr/terms with a known PMU, this will set hardcoded terms. */ 1463 if (config_attr(&attr, &parsed_terms, parse_state, config_term_pmu)) { 1464 parse_events_terms__exit(&parsed_terms); 1465 return -EINVAL; 1466 } 1467 1468 /* Look for event names in the terms and rewrite into format based terms. */ 1469 if (perf_pmu__check_alias(pmu, &parsed_terms, 1470 &info, &alias_rewrote_terms, 1471 &alternate_hw_config, err)) { 1472 parse_events_terms__exit(&parsed_terms); 1473 return -EINVAL; 1474 } 1475 1476 if (verbose > 1) { 1477 struct strbuf sb; 1478 1479 strbuf_init(&sb, /*hint=*/ 0); 1480 parse_events_terms__to_strbuf(&parsed_terms, &sb); 1481 fprintf(stderr, "..after resolving event: %s/%s/\n", pmu->name, sb.buf); 1482 strbuf_release(&sb); 1483 } 1484 1485 /* Configure attr/terms again if an alias was expanded. */ 1486 if (alias_rewrote_terms && 1487 config_attr(&attr, &parsed_terms, parse_state, config_term_pmu)) { 1488 parse_events_terms__exit(&parsed_terms); 1489 return -EINVAL; 1490 } 1491 1492 if (get_config_terms(&parsed_terms, &config_terms)) { 1493 parse_events_terms__exit(&parsed_terms); 1494 return -ENOMEM; 1495 } 1496 1497 /* 1498 * When using default config, record which bits of attr->config were 1499 * changed by the user. 1500 */ 1501 if (pmu->perf_event_attr_init_default && 1502 get_config_chgs(pmu, &parsed_terms, &config_terms)) { 1503 parse_events_terms__exit(&parsed_terms); 1504 return -ENOMEM; 1505 } 1506 1507 /* Skip configuring hard coded terms that were applied by config_attr. */ 1508 if (perf_pmu__config(pmu, &attr, &parsed_terms, /*apply_hardcoded=*/false, 1509 parse_state->error)) { 1510 free_config_terms(&config_terms); 1511 parse_events_terms__exit(&parsed_terms); 1512 return -EINVAL; 1513 } 1514 1515 term_cpu = get_config_cpu(&parsed_terms, parse_state->fake_pmu); 1516 evsel = __add_event(list, &parse_state->idx, &attr, /*init_attr=*/true, 1517 get_config_name(&parsed_terms), 1518 get_config_metric_id(&parsed_terms), pmu, 1519 &config_terms, first_wildcard_match, term_cpu, alternate_hw_config); 1520 perf_cpu_map__put(term_cpu); 1521 if (!evsel) { 1522 parse_events_terms__exit(&parsed_terms); 1523 return -ENOMEM; 1524 } 1525 1526 if (evsel->name) 1527 evsel->use_config_name = true; 1528 1529 evsel->percore = config_term_percore(&evsel->config_terms); 1530 1531 parse_events_terms__exit(&parsed_terms); 1532 free((char *)evsel->unit); 1533 evsel->unit = strdup(info.unit); 1534 evsel->scale = info.scale; 1535 evsel->per_pkg = info.per_pkg; 1536 evsel->snapshot = info.snapshot; 1537 evsel->retirement_latency.mean = info.retirement_latency_mean; 1538 evsel->retirement_latency.min = info.retirement_latency_min; 1539 evsel->retirement_latency.max = info.retirement_latency_max; 1540 1541 return 0; 1542 } 1543 1544 int parse_events_multi_pmu_add(struct parse_events_state *parse_state, 1545 const char *event_name, 1546 const struct parse_events_terms *const_parsed_terms, 1547 struct list_head **listp, void *loc_) 1548 { 1549 struct parse_events_term *term; 1550 struct list_head *list = NULL; 1551 struct perf_pmu *pmu = NULL; 1552 YYLTYPE *loc = loc_; 1553 int ok = 0; 1554 const char *config; 1555 struct parse_events_terms parsed_terms; 1556 struct evsel *first_wildcard_match = NULL; 1557 1558 *listp = NULL; 1559 1560 parse_events_terms__init(&parsed_terms); 1561 if (const_parsed_terms) { 1562 int ret = parse_events_terms__copy(const_parsed_terms, &parsed_terms); 1563 1564 if (ret) 1565 return ret; 1566 } 1567 1568 config = strdup(event_name); 1569 if (!config) 1570 goto out_err; 1571 1572 if (parse_events_term__num(&term, 1573 PARSE_EVENTS__TERM_TYPE_USER, 1574 config, /*num=*/1, /*novalue=*/true, 1575 loc, /*loc_val=*/NULL) < 0) { 1576 zfree(&config); 1577 goto out_err; 1578 } 1579 list_add_tail(&term->list, &parsed_terms.terms); 1580 1581 /* Add it for all PMUs that support the alias */ 1582 list = malloc(sizeof(struct list_head)); 1583 if (!list) 1584 goto out_err; 1585 1586 INIT_LIST_HEAD(list); 1587 1588 while ((pmu = perf_pmus__scan_for_event(pmu, event_name)) != NULL) { 1589 1590 if (parse_events__filter_pmu(parse_state, pmu)) 1591 continue; 1592 1593 if (!perf_pmu__have_event(pmu, event_name)) 1594 continue; 1595 1596 if (!parse_events_add_pmu(parse_state, list, pmu, 1597 &parsed_terms, first_wildcard_match)) { 1598 struct strbuf sb; 1599 1600 strbuf_init(&sb, /*hint=*/ 0); 1601 parse_events_terms__to_strbuf(&parsed_terms, &sb); 1602 pr_debug("%s -> %s/%s/\n", event_name, pmu->name, sb.buf); 1603 strbuf_release(&sb); 1604 ok++; 1605 } 1606 if (first_wildcard_match == NULL) 1607 first_wildcard_match = container_of(list->prev, struct evsel, core.node); 1608 } 1609 1610 if (parse_state->fake_pmu) { 1611 if (!parse_events_add_pmu(parse_state, list, perf_pmus__fake_pmu(), &parsed_terms, 1612 first_wildcard_match)) { 1613 struct strbuf sb; 1614 1615 strbuf_init(&sb, /*hint=*/ 0); 1616 parse_events_terms__to_strbuf(&parsed_terms, &sb); 1617 pr_debug("%s -> fake/%s/\n", event_name, sb.buf); 1618 strbuf_release(&sb); 1619 ok++; 1620 } 1621 } 1622 1623 out_err: 1624 parse_events_terms__exit(&parsed_terms); 1625 if (ok) 1626 *listp = list; 1627 else 1628 free(list); 1629 1630 return ok ? 0 : -1; 1631 } 1632 1633 int parse_events_multi_pmu_add_or_add_pmu(struct parse_events_state *parse_state, 1634 const char *event_or_pmu, 1635 const struct parse_events_terms *const_parsed_terms, 1636 struct list_head **listp, 1637 void *loc_) 1638 { 1639 YYLTYPE *loc = loc_; 1640 struct perf_pmu *pmu; 1641 int ok = 0; 1642 char *help; 1643 struct evsel *first_wildcard_match = NULL; 1644 1645 *listp = malloc(sizeof(**listp)); 1646 if (!*listp) 1647 return -ENOMEM; 1648 1649 INIT_LIST_HEAD(*listp); 1650 1651 /* Attempt to add to list assuming event_or_pmu is a PMU name. */ 1652 pmu = perf_pmus__find(event_or_pmu); 1653 if (pmu && !parse_events_add_pmu(parse_state, *listp, pmu, const_parsed_terms, 1654 first_wildcard_match)) 1655 return 0; 1656 1657 if (parse_state->fake_pmu) { 1658 if (!parse_events_add_pmu(parse_state, *listp, perf_pmus__fake_pmu(), 1659 const_parsed_terms, 1660 first_wildcard_match)) 1661 return 0; 1662 } 1663 1664 pmu = NULL; 1665 /* Failed to add, try wildcard expansion of event_or_pmu as a PMU name. */ 1666 while ((pmu = perf_pmus__scan_matching_wildcard(pmu, event_or_pmu)) != NULL) { 1667 1668 if (parse_events__filter_pmu(parse_state, pmu)) 1669 continue; 1670 1671 if (!parse_events_add_pmu(parse_state, *listp, pmu, 1672 const_parsed_terms, 1673 first_wildcard_match)) { 1674 ok++; 1675 parse_state->wild_card_pmus = true; 1676 } 1677 if (first_wildcard_match == NULL) { 1678 first_wildcard_match = 1679 container_of((*listp)->prev, struct evsel, core.node); 1680 } 1681 } 1682 if (ok) 1683 return 0; 1684 1685 /* Failure to add, assume event_or_pmu is an event name. */ 1686 zfree(listp); 1687 if (!parse_events_multi_pmu_add(parse_state, event_or_pmu, 1688 const_parsed_terms, listp, loc)) 1689 return 0; 1690 1691 if (asprintf(&help, "Unable to find PMU or event on a PMU of '%s'", event_or_pmu) < 0) 1692 help = NULL; 1693 parse_events_error__handle(parse_state->error, loc->first_column, 1694 strdup("Bad event or PMU"), 1695 help); 1696 zfree(listp); 1697 return -EINVAL; 1698 } 1699 1700 void parse_events__set_leader(char *name, struct list_head *list) 1701 { 1702 struct evsel *leader; 1703 1704 if (list_empty(list)) { 1705 WARN_ONCE(true, "WARNING: failed to set leader: empty list"); 1706 return; 1707 } 1708 1709 leader = list_first_entry(list, struct evsel, core.node); 1710 __perf_evlist__set_leader(list, &leader->core); 1711 zfree(&leader->group_name); 1712 leader->group_name = name; 1713 } 1714 1715 static int parse_events__modifier_list(struct parse_events_state *parse_state, 1716 YYLTYPE *loc, 1717 struct list_head *list, 1718 struct parse_events_modifier mod, 1719 bool group) 1720 { 1721 struct evsel *evsel; 1722 1723 if (!group && mod.weak) { 1724 parse_events_error__handle(parse_state->error, loc->first_column, 1725 strdup("Weak modifier is for use with groups"), NULL); 1726 return -EINVAL; 1727 } 1728 1729 __evlist__for_each_entry(list, evsel) { 1730 /* Translate modifiers into the equivalent evsel excludes. */ 1731 int eu = group ? evsel->core.attr.exclude_user : 0; 1732 int ek = group ? evsel->core.attr.exclude_kernel : 0; 1733 int eh = group ? evsel->core.attr.exclude_hv : 0; 1734 int eH = group ? evsel->core.attr.exclude_host : 0; 1735 int eG = group ? evsel->core.attr.exclude_guest : 0; 1736 int exclude = eu | ek | eh; 1737 int exclude_GH = eG | eH; 1738 1739 if (mod.user) { 1740 if (!exclude) 1741 exclude = eu = ek = eh = 1; 1742 eu = 0; 1743 } 1744 if (mod.kernel) { 1745 if (!exclude) 1746 exclude = eu = ek = eh = 1; 1747 ek = 0; 1748 } 1749 if (mod.hypervisor) { 1750 if (!exclude) 1751 exclude = eu = ek = eh = 1; 1752 eh = 0; 1753 } 1754 if (mod.guest) { 1755 if (!exclude_GH) 1756 exclude_GH = eG = eH = 1; 1757 eG = 0; 1758 } 1759 if (mod.host) { 1760 if (!exclude_GH) 1761 exclude_GH = eG = eH = 1; 1762 eH = 0; 1763 } 1764 if (!exclude_GH && exclude_GH_default) { 1765 if (perf_host) 1766 eG = 1; 1767 else if (perf_guest) 1768 eH = 1; 1769 } 1770 1771 evsel->core.attr.exclude_user = eu; 1772 evsel->core.attr.exclude_kernel = ek; 1773 evsel->core.attr.exclude_hv = eh; 1774 evsel->core.attr.exclude_host = eH; 1775 evsel->core.attr.exclude_guest = eG; 1776 evsel->exclude_GH = exclude_GH; 1777 1778 /* Simple modifiers copied to the evsel. */ 1779 if (mod.precise) { 1780 u8 precise = evsel->core.attr.precise_ip + mod.precise; 1781 /* 1782 * precise ip: 1783 * 1784 * 0 - SAMPLE_IP can have arbitrary skid 1785 * 1 - SAMPLE_IP must have constant skid 1786 * 2 - SAMPLE_IP requested to have 0 skid 1787 * 3 - SAMPLE_IP must have 0 skid 1788 * 1789 * See also PERF_RECORD_MISC_EXACT_IP 1790 */ 1791 if (precise > 3) { 1792 char *help; 1793 1794 if (asprintf(&help, 1795 "Maximum combined precise value is 3, adding precision to \"%s\"", 1796 evsel__name(evsel)) > 0) { 1797 parse_events_error__handle(parse_state->error, 1798 loc->first_column, 1799 help, NULL); 1800 } 1801 return -EINVAL; 1802 } 1803 evsel->core.attr.precise_ip = precise; 1804 } 1805 if (mod.precise_max) 1806 evsel->precise_max = 1; 1807 if (mod.non_idle) 1808 evsel->core.attr.exclude_idle = 1; 1809 if (mod.sample_read) 1810 evsel->sample_read = 1; 1811 if (mod.pinned && evsel__is_group_leader(evsel)) 1812 evsel->core.attr.pinned = 1; 1813 if (mod.exclusive && evsel__is_group_leader(evsel)) 1814 evsel->core.attr.exclusive = 1; 1815 if (mod.weak) 1816 evsel->weak_group = true; 1817 if (mod.bpf) 1818 evsel->bpf_counter = true; 1819 if (mod.retire_lat) 1820 evsel->retire_lat = true; 1821 if (mod.dont_regroup) 1822 evsel->dont_regroup = true; 1823 } 1824 return 0; 1825 } 1826 1827 int parse_events__modifier_group(struct parse_events_state *parse_state, void *loc, 1828 struct list_head *list, 1829 struct parse_events_modifier mod) 1830 { 1831 return parse_events__modifier_list(parse_state, loc, list, mod, /*group=*/true); 1832 } 1833 1834 int parse_events__modifier_event(struct parse_events_state *parse_state, void *loc, 1835 struct list_head *list, 1836 struct parse_events_modifier mod) 1837 { 1838 return parse_events__modifier_list(parse_state, loc, list, mod, /*group=*/false); 1839 } 1840 1841 int parse_events__set_default_name(struct list_head *list, char *name) 1842 { 1843 struct evsel *evsel; 1844 bool used_name = false; 1845 1846 __evlist__for_each_entry(list, evsel) { 1847 if (!evsel->name) { 1848 evsel->name = used_name ? strdup(name) : name; 1849 used_name = true; 1850 if (!evsel->name) 1851 return -ENOMEM; 1852 } 1853 } 1854 if (!used_name) 1855 free(name); 1856 return 0; 1857 } 1858 1859 static int parse_events__scanner(const char *str, 1860 struct parse_events_state *parse_state) 1861 { 1862 YY_BUFFER_STATE buffer; 1863 void *scanner; 1864 int ret; 1865 1866 ret = parse_events_lex_init_extra(parse_state, &scanner); 1867 if (ret) 1868 return ret; 1869 1870 buffer = parse_events__scan_string(str, scanner); 1871 1872 #ifdef PARSER_DEBUG 1873 parse_events_debug = 1; 1874 parse_events_set_debug(1, scanner); 1875 #endif 1876 ret = parse_events_parse(parse_state, scanner); 1877 1878 parse_events__flush_buffer(buffer, scanner); 1879 parse_events__delete_buffer(buffer, scanner); 1880 parse_events_lex_destroy(scanner); 1881 return ret; 1882 } 1883 1884 /* 1885 * parse event config string, return a list of event terms. 1886 */ 1887 int parse_events_terms(struct parse_events_terms *terms, const char *str) 1888 { 1889 struct parse_events_state parse_state = { 1890 .terms = NULL, 1891 .stoken = PE_START_TERMS, 1892 }; 1893 int ret; 1894 1895 ret = parse_events__scanner(str, &parse_state); 1896 if (!ret) 1897 list_splice(&parse_state.terms->terms, &terms->terms); 1898 1899 zfree(&parse_state.terms); 1900 return ret; 1901 } 1902 1903 static int evsel__compute_group_pmu_name(struct evsel *evsel, 1904 const struct list_head *head) 1905 { 1906 struct evsel *leader = evsel__leader(evsel); 1907 struct evsel *pos; 1908 const char *group_pmu_name; 1909 struct perf_pmu *pmu = evsel__find_pmu(evsel); 1910 1911 if (!pmu) { 1912 /* 1913 * For PERF_TYPE_HARDWARE and PERF_TYPE_HW_CACHE types the PMU 1914 * is a core PMU, but in heterogeneous systems this is 1915 * unknown. For now pick the first core PMU. 1916 */ 1917 pmu = perf_pmus__scan_core(NULL); 1918 } 1919 if (!pmu) { 1920 pr_debug("No PMU found for '%s'\n", evsel__name(evsel)); 1921 return -EINVAL; 1922 } 1923 group_pmu_name = pmu->name; 1924 /* 1925 * Software events may be in a group with other uncore PMU events. Use 1926 * the pmu_name of the first non-software event to avoid breaking the 1927 * software event out of the group. 1928 * 1929 * Aux event leaders, like intel_pt, expect a group with events from 1930 * other PMUs, so substitute the AUX event's PMU in this case. 1931 */ 1932 if (perf_pmu__is_software(pmu) || evsel__is_aux_event(leader)) { 1933 struct perf_pmu *leader_pmu = evsel__find_pmu(leader); 1934 1935 if (!leader_pmu) { 1936 /* As with determining pmu above. */ 1937 leader_pmu = perf_pmus__scan_core(NULL); 1938 } 1939 /* 1940 * Starting with the leader, find the first event with a named 1941 * non-software PMU. for_each_group_(member|evsel) isn't used as 1942 * the list isn't yet sorted putting evsel's in the same group 1943 * together. 1944 */ 1945 if (leader_pmu && !perf_pmu__is_software(leader_pmu)) { 1946 group_pmu_name = leader_pmu->name; 1947 } else if (leader->core.nr_members > 1) { 1948 list_for_each_entry(pos, head, core.node) { 1949 struct perf_pmu *pos_pmu; 1950 1951 if (pos == leader || evsel__leader(pos) != leader) 1952 continue; 1953 pos_pmu = evsel__find_pmu(pos); 1954 if (!pos_pmu) { 1955 /* As with determining pmu above. */ 1956 pos_pmu = perf_pmus__scan_core(NULL); 1957 } 1958 if (pos_pmu && !perf_pmu__is_software(pos_pmu)) { 1959 group_pmu_name = pos_pmu->name; 1960 break; 1961 } 1962 } 1963 } 1964 } 1965 /* Record computed name. */ 1966 evsel->group_pmu_name = strdup(group_pmu_name); 1967 return evsel->group_pmu_name ? 0 : -ENOMEM; 1968 } 1969 1970 __weak int arch_evlist__cmp(const struct evsel *lhs, const struct evsel *rhs) 1971 { 1972 /* Order by insertion index. */ 1973 return lhs->core.idx - rhs->core.idx; 1974 } 1975 1976 static int evlist__cmp(void *_fg_idx, const struct list_head *l, const struct list_head *r) 1977 { 1978 const struct perf_evsel *lhs_core = container_of(l, struct perf_evsel, node); 1979 const struct evsel *lhs = container_of(lhs_core, struct evsel, core); 1980 const struct perf_evsel *rhs_core = container_of(r, struct perf_evsel, node); 1981 const struct evsel *rhs = container_of(rhs_core, struct evsel, core); 1982 int *force_grouped_idx = _fg_idx; 1983 int lhs_sort_idx, rhs_sort_idx, ret; 1984 const char *lhs_pmu_name, *rhs_pmu_name; 1985 1986 /* 1987 * Get the indexes of the 2 events to sort. If the events are 1988 * in groups then the leader's index is used otherwise the 1989 * event's index is used. An index may be forced for events that 1990 * must be in the same group, namely Intel topdown events. 1991 */ 1992 if (lhs->dont_regroup) { 1993 lhs_sort_idx = lhs_core->idx; 1994 } else if (*force_grouped_idx != -1 && arch_evsel__must_be_in_group(lhs)) { 1995 lhs_sort_idx = *force_grouped_idx; 1996 } else { 1997 bool lhs_has_group = lhs_core->leader != lhs_core || lhs_core->nr_members > 1; 1998 1999 lhs_sort_idx = lhs_has_group ? lhs_core->leader->idx : lhs_core->idx; 2000 } 2001 if (rhs->dont_regroup) { 2002 rhs_sort_idx = rhs_core->idx; 2003 } else if (*force_grouped_idx != -1 && arch_evsel__must_be_in_group(rhs)) { 2004 rhs_sort_idx = *force_grouped_idx; 2005 } else { 2006 bool rhs_has_group = rhs_core->leader != rhs_core || rhs_core->nr_members > 1; 2007 2008 rhs_sort_idx = rhs_has_group ? rhs_core->leader->idx : rhs_core->idx; 2009 } 2010 2011 /* If the indices differ then respect the insertion order. */ 2012 if (lhs_sort_idx != rhs_sort_idx) 2013 return lhs_sort_idx - rhs_sort_idx; 2014 2015 /* 2016 * Ignoring forcing, lhs_sort_idx == rhs_sort_idx so lhs and rhs should 2017 * be in the same group. Events in the same group need to be ordered by 2018 * their grouping PMU name as the group will be broken to ensure only 2019 * events on the same PMU are programmed together. 2020 * 2021 * With forcing the lhs_sort_idx == rhs_sort_idx shows that one or both 2022 * events are being forced to be at force_group_index. If only one event 2023 * is being forced then the other event is the group leader of the group 2024 * we're trying to force the event into. Ensure for the force grouped 2025 * case that the PMU name ordering is also respected. 2026 */ 2027 lhs_pmu_name = lhs->group_pmu_name; 2028 rhs_pmu_name = rhs->group_pmu_name; 2029 ret = strcmp(lhs_pmu_name, rhs_pmu_name); 2030 if (ret) 2031 return ret; 2032 2033 /* 2034 * Architecture specific sorting, by default sort events in the same 2035 * group with the same PMU by their insertion index. On Intel topdown 2036 * constraints must be adhered to - slots first, etc. 2037 */ 2038 return arch_evlist__cmp(lhs, rhs); 2039 } 2040 2041 int __weak arch_evlist__add_required_events(struct list_head *list __always_unused) 2042 { 2043 return 0; 2044 } 2045 2046 static int parse_events__sort_events_and_fix_groups(struct list_head *list) 2047 { 2048 int idx = 0, force_grouped_idx = -1; 2049 struct evsel *pos, *cur_leader = NULL; 2050 struct perf_evsel *cur_leaders_grp = NULL; 2051 bool idx_changed = false; 2052 int orig_num_leaders = 0, num_leaders = 0; 2053 int ret; 2054 struct evsel *force_grouped_leader = NULL; 2055 bool last_event_was_forced_leader = false; 2056 2057 /* On x86 topdown metrics events require a slots event. */ 2058 ret = arch_evlist__add_required_events(list); 2059 if (ret) 2060 return ret; 2061 2062 /* 2063 * Compute index to insert ungrouped events at. Place them where the 2064 * first ungrouped event appears. 2065 */ 2066 list_for_each_entry(pos, list, core.node) { 2067 const struct evsel *pos_leader = evsel__leader(pos); 2068 2069 ret = evsel__compute_group_pmu_name(pos, list); 2070 if (ret) 2071 return ret; 2072 2073 if (pos == pos_leader) 2074 orig_num_leaders++; 2075 2076 /* 2077 * Ensure indexes are sequential, in particular for multiple 2078 * event lists being merged. The indexes are used to detect when 2079 * the user order is modified. 2080 */ 2081 pos->core.idx = idx++; 2082 2083 /* 2084 * Remember an index to sort all forced grouped events 2085 * together to. Use the group leader as some events 2086 * must appear first within the group. 2087 */ 2088 if (force_grouped_idx == -1 && arch_evsel__must_be_in_group(pos)) 2089 force_grouped_idx = pos_leader->core.idx; 2090 } 2091 2092 /* Sort events. */ 2093 list_sort(&force_grouped_idx, list, evlist__cmp); 2094 2095 /* 2096 * Recompute groups, splitting for PMUs and adding groups for events 2097 * that require them. 2098 */ 2099 idx = 0; 2100 list_for_each_entry(pos, list, core.node) { 2101 struct evsel *pos_leader = evsel__leader(pos); 2102 const char *pos_pmu_name = pos->group_pmu_name; 2103 const char *cur_leader_pmu_name; 2104 bool pos_force_grouped = force_grouped_idx != -1 && !pos->dont_regroup && 2105 arch_evsel__must_be_in_group(pos); 2106 2107 /* Reset index and nr_members. */ 2108 if (pos->core.idx != idx) 2109 idx_changed = true; 2110 pos->core.idx = idx++; 2111 pos->core.nr_members = 0; 2112 2113 /* 2114 * Set the group leader respecting the given groupings and that 2115 * groups can't span PMUs. 2116 */ 2117 if (!cur_leader || pos->dont_regroup) { 2118 cur_leader = pos->dont_regroup ? pos_leader : pos; 2119 cur_leaders_grp = &cur_leader->core; 2120 if (pos_force_grouped) 2121 force_grouped_leader = pos; 2122 } 2123 cur_leader_pmu_name = cur_leader->group_pmu_name; 2124 if (strcmp(cur_leader_pmu_name, pos_pmu_name)) { 2125 /* PMU changed so the group/leader must change. */ 2126 cur_leader = pos; 2127 cur_leaders_grp = pos->core.leader; 2128 if (pos_force_grouped && force_grouped_leader == NULL) 2129 force_grouped_leader = pos; 2130 } else if (cur_leaders_grp != pos->core.leader) { 2131 bool split_even_if_last_leader_was_forced = true; 2132 2133 /* 2134 * Event is for a different group. If the last event was 2135 * the forced group leader then subsequent group events 2136 * and forced events should be in the same group. If 2137 * there are no other forced group events then the 2138 * forced group leader wasn't really being forced into a 2139 * group, it just set arch_evsel__must_be_in_group, and 2140 * we don't want the group to split here. 2141 */ 2142 if (force_grouped_idx != -1 && last_event_was_forced_leader) { 2143 struct evsel *pos2 = pos; 2144 /* 2145 * Search the whole list as the group leaders 2146 * aren't currently valid. 2147 */ 2148 list_for_each_entry_continue(pos2, list, core.node) { 2149 if (pos->core.leader == pos2->core.leader && 2150 arch_evsel__must_be_in_group(pos2)) { 2151 split_even_if_last_leader_was_forced = false; 2152 break; 2153 } 2154 } 2155 } 2156 if (!last_event_was_forced_leader || split_even_if_last_leader_was_forced) { 2157 if (pos_force_grouped) { 2158 if (force_grouped_leader) { 2159 cur_leader = force_grouped_leader; 2160 cur_leaders_grp = force_grouped_leader->core.leader; 2161 } else { 2162 cur_leader = force_grouped_leader = pos; 2163 cur_leaders_grp = &pos->core; 2164 } 2165 } else { 2166 cur_leader = pos; 2167 cur_leaders_grp = pos->core.leader; 2168 } 2169 } 2170 } 2171 if (pos_leader != cur_leader) { 2172 /* The leader changed so update it. */ 2173 evsel__set_leader(pos, cur_leader); 2174 } 2175 last_event_was_forced_leader = (force_grouped_leader == pos); 2176 } 2177 list_for_each_entry(pos, list, core.node) { 2178 struct evsel *pos_leader = evsel__leader(pos); 2179 2180 if (pos == pos_leader) 2181 num_leaders++; 2182 pos_leader->core.nr_members++; 2183 } 2184 return (idx_changed || num_leaders != orig_num_leaders) ? 1 : 0; 2185 } 2186 2187 int __parse_events(struct evlist *evlist, const char *str, const char *pmu_filter, 2188 struct parse_events_error *err, bool fake_pmu, 2189 bool warn_if_reordered, bool fake_tp) 2190 { 2191 struct parse_events_state parse_state = { 2192 .list = LIST_HEAD_INIT(parse_state.list), 2193 .idx = evlist->core.nr_entries, 2194 .error = err, 2195 .stoken = PE_START_EVENTS, 2196 .fake_pmu = fake_pmu, 2197 .fake_tp = fake_tp, 2198 .pmu_filter = pmu_filter, 2199 .match_legacy_cache_terms = true, 2200 }; 2201 int ret, ret2; 2202 2203 ret = parse_events__scanner(str, &parse_state); 2204 2205 if (!ret && list_empty(&parse_state.list)) { 2206 WARN_ONCE(true, "WARNING: event parser found nothing\n"); 2207 return -1; 2208 } 2209 2210 ret2 = parse_events__sort_events_and_fix_groups(&parse_state.list); 2211 if (ret2 < 0) 2212 return ret; 2213 2214 /* 2215 * Add list to the evlist even with errors to allow callers to clean up. 2216 */ 2217 evlist__splice_list_tail(evlist, &parse_state.list); 2218 2219 if (ret2 && warn_if_reordered && !parse_state.wild_card_pmus) { 2220 pr_warning("WARNING: events were regrouped to match PMUs\n"); 2221 2222 if (verbose > 0) { 2223 struct strbuf sb = STRBUF_INIT; 2224 2225 evlist__uniquify_evsel_names(evlist, &stat_config); 2226 evlist__format_evsels(evlist, &sb, 2048); 2227 pr_debug("evlist after sorting/fixing: '%s'\n", sb.buf); 2228 strbuf_release(&sb); 2229 } 2230 } 2231 if (!ret) { 2232 struct evsel *last; 2233 2234 last = evlist__last(evlist); 2235 last->cmdline_group_boundary = true; 2236 2237 return 0; 2238 } 2239 2240 /* 2241 * There are 2 users - builtin-record and builtin-test objects. 2242 * Both call evlist__delete in case of error, so we dont 2243 * need to bother. 2244 */ 2245 return ret; 2246 } 2247 2248 int parse_event(struct evlist *evlist, const char *str) 2249 { 2250 struct parse_events_error err; 2251 int ret; 2252 2253 parse_events_error__init(&err); 2254 ret = parse_events(evlist, str, &err); 2255 if (ret && verbose > 0) 2256 parse_events_error__print(&err, str); 2257 parse_events_error__exit(&err); 2258 return ret; 2259 } 2260 2261 struct parse_events_error_entry { 2262 /** @list: The list the error is part of. */ 2263 struct list_head list; 2264 /** @idx: index in the parsed string */ 2265 int idx; 2266 /** @str: string to display at the index */ 2267 char *str; 2268 /** @help: optional help string */ 2269 char *help; 2270 }; 2271 2272 void parse_events_error__init(struct parse_events_error *err) 2273 { 2274 INIT_LIST_HEAD(&err->list); 2275 } 2276 2277 void parse_events_error__exit(struct parse_events_error *err) 2278 { 2279 struct parse_events_error_entry *pos, *tmp; 2280 2281 list_for_each_entry_safe(pos, tmp, &err->list, list) { 2282 zfree(&pos->str); 2283 zfree(&pos->help); 2284 list_del_init(&pos->list); 2285 free(pos); 2286 } 2287 } 2288 2289 void parse_events_error__handle(struct parse_events_error *err, int idx, 2290 char *str, char *help) 2291 { 2292 struct parse_events_error_entry *entry; 2293 2294 if (WARN(!str || !err, "WARNING: failed to provide error string or struct\n")) 2295 goto out_free; 2296 2297 entry = zalloc(sizeof(*entry)); 2298 if (!entry) { 2299 pr_err("Failed to allocate memory for event parsing error: %s (%s)\n", 2300 str, help ?: "<no help>"); 2301 goto out_free; 2302 } 2303 entry->idx = idx; 2304 entry->str = str; 2305 entry->help = help; 2306 list_add(&entry->list, &err->list); 2307 return; 2308 out_free: 2309 free(str); 2310 free(help); 2311 } 2312 2313 #define MAX_WIDTH 1000 2314 static int get_term_width(void) 2315 { 2316 struct winsize ws; 2317 2318 get_term_dimensions(&ws); 2319 return ws.ws_col > MAX_WIDTH ? MAX_WIDTH : ws.ws_col; 2320 } 2321 2322 static void __parse_events_error__print(int err_idx, const char *err_str, 2323 const char *err_help, const char *event) 2324 { 2325 const char *str = "invalid or unsupported event: "; 2326 char _buf[MAX_WIDTH]; 2327 char *buf = (char *) event; 2328 int idx = 0; 2329 if (err_str) { 2330 /* -2 for extra '' in the final fprintf */ 2331 int width = get_term_width() - 2; 2332 int len_event = strlen(event); 2333 int len_str, max_len, cut = 0; 2334 2335 /* 2336 * Maximum error index indent, we will cut 2337 * the event string if it's bigger. 2338 */ 2339 int max_err_idx = 13; 2340 2341 /* 2342 * Let's be specific with the message when 2343 * we have the precise error. 2344 */ 2345 str = "event syntax error: "; 2346 len_str = strlen(str); 2347 max_len = width - len_str; 2348 2349 buf = _buf; 2350 2351 /* We're cutting from the beginning. */ 2352 if (err_idx > max_err_idx) 2353 cut = err_idx - max_err_idx; 2354 2355 strncpy(buf, event + cut, max_len); 2356 2357 /* Mark cut parts with '..' on both sides. */ 2358 if (cut) 2359 buf[0] = buf[1] = '.'; 2360 2361 if ((len_event - cut) > max_len) { 2362 buf[max_len - 1] = buf[max_len - 2] = '.'; 2363 buf[max_len] = 0; 2364 } 2365 2366 idx = len_str + err_idx - cut; 2367 } 2368 2369 fprintf(stderr, "%s'%s'\n", str, buf); 2370 if (idx) { 2371 fprintf(stderr, "%*s\\___ %s\n", idx + 1, "", err_str); 2372 if (err_help) 2373 fprintf(stderr, "\n%s\n", err_help); 2374 } 2375 } 2376 2377 void parse_events_error__print(const struct parse_events_error *err, 2378 const char *event) 2379 { 2380 struct parse_events_error_entry *pos; 2381 bool first = true; 2382 2383 list_for_each_entry(pos, &err->list, list) { 2384 if (!first) 2385 fputs("\n", stderr); 2386 __parse_events_error__print(pos->idx, pos->str, pos->help, event); 2387 first = false; 2388 } 2389 } 2390 2391 /* 2392 * In the list of errors err, do any of the error strings (str) contain the 2393 * given needle string? 2394 */ 2395 bool parse_events_error__contains(const struct parse_events_error *err, 2396 const char *needle) 2397 { 2398 struct parse_events_error_entry *pos; 2399 2400 list_for_each_entry(pos, &err->list, list) { 2401 if (strstr(pos->str, needle) != NULL) 2402 return true; 2403 } 2404 return false; 2405 } 2406 2407 #undef MAX_WIDTH 2408 2409 int parse_events_option(const struct option *opt, const char *str, 2410 int unset __maybe_unused) 2411 { 2412 struct parse_events_option_args *args = opt->value; 2413 struct parse_events_error err; 2414 int ret; 2415 2416 parse_events_error__init(&err); 2417 ret = __parse_events(*args->evlistp, str, args->pmu_filter, &err, 2418 /*fake_pmu=*/false, /*warn_if_reordered=*/true, 2419 /*fake_tp=*/false); 2420 2421 if (ret) { 2422 parse_events_error__print(&err, str); 2423 fprintf(stderr, "Run 'perf list' for a list of valid events\n"); 2424 } 2425 parse_events_error__exit(&err); 2426 2427 return ret; 2428 } 2429 2430 int parse_events_option_new_evlist(const struct option *opt, const char *str, int unset) 2431 { 2432 struct parse_events_option_args *args = opt->value; 2433 int ret; 2434 2435 if (*args->evlistp == NULL) { 2436 *args->evlistp = evlist__new(); 2437 2438 if (*args->evlistp == NULL) { 2439 fprintf(stderr, "Not enough memory to create evlist\n"); 2440 return -1; 2441 } 2442 } 2443 ret = parse_events_option(opt, str, unset); 2444 if (ret) { 2445 evlist__delete(*args->evlistp); 2446 *args->evlistp = NULL; 2447 } 2448 2449 return ret; 2450 } 2451 2452 static int 2453 foreach_evsel_in_last_glob(struct evlist *evlist, 2454 int (*func)(struct evsel *evsel, 2455 const void *arg), 2456 const void *arg) 2457 { 2458 struct evsel *last = NULL; 2459 int err; 2460 2461 /* 2462 * Don't return when list_empty, give func a chance to report 2463 * error when it found last == NULL. 2464 * 2465 * So no need to WARN here, let *func do this. 2466 */ 2467 if (evlist->core.nr_entries > 0) 2468 last = evlist__last(evlist); 2469 2470 do { 2471 err = (*func)(last, arg); 2472 if (err) 2473 return -1; 2474 if (!last) 2475 return 0; 2476 2477 if (last->core.node.prev == &evlist->core.entries) 2478 return 0; 2479 last = list_entry(last->core.node.prev, struct evsel, core.node); 2480 } while (!last->cmdline_group_boundary); 2481 2482 return 0; 2483 } 2484 2485 /* Will a tracepoint filter work for str or should a BPF filter be used? */ 2486 static bool is_possible_tp_filter(const char *str) 2487 { 2488 return strstr(str, "uid") == NULL; 2489 } 2490 2491 static int set_filter(struct evsel *evsel, const void *arg) 2492 { 2493 const char *str = arg; 2494 int nr_addr_filters = 0; 2495 struct perf_pmu *pmu; 2496 2497 if (evsel == NULL) { 2498 fprintf(stderr, 2499 "--filter option should follow a -e tracepoint or HW tracer option\n"); 2500 return -1; 2501 } 2502 2503 if (evsel->core.attr.type == PERF_TYPE_TRACEPOINT && is_possible_tp_filter(str)) { 2504 if (evsel__append_tp_filter(evsel, str) < 0) { 2505 fprintf(stderr, 2506 "not enough memory to hold filter string\n"); 2507 return -1; 2508 } 2509 2510 return 0; 2511 } 2512 2513 pmu = evsel__find_pmu(evsel); 2514 if (pmu) { 2515 perf_pmu__scan_file(pmu, "nr_addr_filters", 2516 "%d", &nr_addr_filters); 2517 } 2518 if (!nr_addr_filters) 2519 return perf_bpf_filter__parse(&evsel->bpf_filters, str); 2520 2521 if (evsel__append_addr_filter(evsel, str) < 0) { 2522 fprintf(stderr, 2523 "not enough memory to hold filter string\n"); 2524 return -1; 2525 } 2526 2527 return 0; 2528 } 2529 2530 int parse_filter(const struct option *opt, const char *str, 2531 int unset __maybe_unused) 2532 { 2533 struct evlist *evlist = *(struct evlist **)opt->value; 2534 2535 return foreach_evsel_in_last_glob(evlist, set_filter, 2536 (const void *)str); 2537 } 2538 2539 int parse_uid_filter(struct evlist *evlist, uid_t uid) 2540 { 2541 struct option opt = { 2542 .value = &evlist, 2543 }; 2544 char buf[128]; 2545 int ret; 2546 2547 snprintf(buf, sizeof(buf), "uid == %d", uid); 2548 ret = parse_filter(&opt, buf, /*unset=*/0); 2549 if (ret) { 2550 if (use_browser >= 1) { 2551 /* 2552 * Use ui__warning so a pop up appears above the 2553 * underlying BPF error message. 2554 */ 2555 ui__warning("Failed to add UID filtering that uses BPF filtering.\n"); 2556 } else { 2557 fprintf(stderr, "Failed to add UID filtering that uses BPF filtering.\n"); 2558 } 2559 } 2560 return ret; 2561 } 2562 2563 static int add_exclude_perf_filter(struct evsel *evsel, 2564 const void *arg __maybe_unused) 2565 { 2566 char new_filter[64]; 2567 2568 if (evsel == NULL || evsel->core.attr.type != PERF_TYPE_TRACEPOINT) { 2569 fprintf(stderr, 2570 "--exclude-perf option should follow a -e tracepoint option\n"); 2571 return -1; 2572 } 2573 2574 snprintf(new_filter, sizeof(new_filter), "common_pid != %d", getpid()); 2575 2576 if (evsel__append_tp_filter(evsel, new_filter) < 0) { 2577 fprintf(stderr, 2578 "not enough memory to hold filter string\n"); 2579 return -1; 2580 } 2581 2582 return 0; 2583 } 2584 2585 int exclude_perf(const struct option *opt, 2586 const char *arg __maybe_unused, 2587 int unset __maybe_unused) 2588 { 2589 struct evlist *evlist = *(struct evlist **)opt->value; 2590 2591 return foreach_evsel_in_last_glob(evlist, add_exclude_perf_filter, 2592 NULL); 2593 } 2594 2595 int parse_events__is_hardcoded_term(struct parse_events_term *term) 2596 { 2597 return term->type_term != PARSE_EVENTS__TERM_TYPE_USER; 2598 } 2599 2600 static int new_term(struct parse_events_term **_term, 2601 struct parse_events_term *temp, 2602 char *str, u64 num) 2603 { 2604 struct parse_events_term *term; 2605 2606 term = malloc(sizeof(*term)); 2607 if (!term) 2608 return -ENOMEM; 2609 2610 *term = *temp; 2611 INIT_LIST_HEAD(&term->list); 2612 term->weak = false; 2613 2614 switch (term->type_val) { 2615 case PARSE_EVENTS__TERM_TYPE_NUM: 2616 term->val.num = num; 2617 break; 2618 case PARSE_EVENTS__TERM_TYPE_STR: 2619 term->val.str = str; 2620 break; 2621 default: 2622 free(term); 2623 return -EINVAL; 2624 } 2625 2626 *_term = term; 2627 return 0; 2628 } 2629 2630 int parse_events_term__num(struct parse_events_term **term, 2631 enum parse_events__term_type type_term, 2632 const char *config, u64 num, 2633 bool no_value, 2634 void *loc_term_, void *loc_val_) 2635 { 2636 YYLTYPE *loc_term = loc_term_; 2637 YYLTYPE *loc_val = loc_val_; 2638 2639 struct parse_events_term temp = { 2640 .type_val = PARSE_EVENTS__TERM_TYPE_NUM, 2641 .type_term = type_term, 2642 .config = config ? : strdup(parse_events__term_type_str(type_term)), 2643 .no_value = no_value, 2644 .err_term = loc_term ? loc_term->first_column : 0, 2645 .err_val = loc_val ? loc_val->first_column : 0, 2646 }; 2647 2648 return new_term(term, &temp, /*str=*/NULL, num); 2649 } 2650 2651 int parse_events_term__str(struct parse_events_term **term, 2652 enum parse_events__term_type type_term, 2653 char *config, char *str, 2654 void *loc_term_, void *loc_val_) 2655 { 2656 YYLTYPE *loc_term = loc_term_; 2657 YYLTYPE *loc_val = loc_val_; 2658 2659 struct parse_events_term temp = { 2660 .type_val = PARSE_EVENTS__TERM_TYPE_STR, 2661 .type_term = type_term, 2662 .config = config, 2663 .err_term = loc_term ? loc_term->first_column : 0, 2664 .err_val = loc_val ? loc_val->first_column : 0, 2665 }; 2666 2667 return new_term(term, &temp, str, /*num=*/0); 2668 } 2669 2670 int parse_events_term__term(struct parse_events_term **term, 2671 enum parse_events__term_type term_lhs, 2672 enum parse_events__term_type term_rhs, 2673 void *loc_term, void *loc_val) 2674 { 2675 return parse_events_term__str(term, term_lhs, NULL, 2676 strdup(parse_events__term_type_str(term_rhs)), 2677 loc_term, loc_val); 2678 } 2679 2680 int parse_events_term__clone(struct parse_events_term **new, 2681 const struct parse_events_term *term) 2682 { 2683 char *str; 2684 struct parse_events_term temp = *term; 2685 2686 temp.used = false; 2687 if (term->config) { 2688 temp.config = strdup(term->config); 2689 if (!temp.config) 2690 return -ENOMEM; 2691 } 2692 if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) 2693 return new_term(new, &temp, /*str=*/NULL, term->val.num); 2694 2695 str = strdup(term->val.str); 2696 if (!str) { 2697 zfree(&temp.config); 2698 return -ENOMEM; 2699 } 2700 return new_term(new, &temp, str, /*num=*/0); 2701 } 2702 2703 void parse_events_term__delete(struct parse_events_term *term) 2704 { 2705 if (term->type_val != PARSE_EVENTS__TERM_TYPE_NUM) 2706 zfree(&term->val.str); 2707 2708 zfree(&term->config); 2709 free(term); 2710 } 2711 2712 static int parse_events_terms__copy(const struct parse_events_terms *src, 2713 struct parse_events_terms *dest) 2714 { 2715 struct parse_events_term *term; 2716 2717 list_for_each_entry (term, &src->terms, list) { 2718 struct parse_events_term *n; 2719 int ret; 2720 2721 ret = parse_events_term__clone(&n, term); 2722 if (ret) 2723 return ret; 2724 2725 list_add_tail(&n->list, &dest->terms); 2726 } 2727 return 0; 2728 } 2729 2730 void parse_events_terms__init(struct parse_events_terms *terms) 2731 { 2732 INIT_LIST_HEAD(&terms->terms); 2733 } 2734 2735 void parse_events_terms__exit(struct parse_events_terms *terms) 2736 { 2737 struct parse_events_term *term, *h; 2738 2739 list_for_each_entry_safe(term, h, &terms->terms, list) { 2740 list_del_init(&term->list); 2741 parse_events_term__delete(term); 2742 } 2743 } 2744 2745 void parse_events_terms__delete(struct parse_events_terms *terms) 2746 { 2747 if (!terms) 2748 return; 2749 parse_events_terms__exit(terms); 2750 free(terms); 2751 } 2752 2753 static int parse_events_terms__to_strbuf(const struct parse_events_terms *terms, struct strbuf *sb) 2754 { 2755 struct parse_events_term *term; 2756 bool first = true; 2757 2758 if (!terms) 2759 return 0; 2760 2761 list_for_each_entry(term, &terms->terms, list) { 2762 int ret; 2763 2764 if (!first) { 2765 ret = strbuf_addch(sb, ','); 2766 if (ret < 0) 2767 return ret; 2768 } 2769 first = false; 2770 2771 if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) 2772 if (term->no_value) { 2773 assert(term->val.num == 1); 2774 ret = strbuf_addf(sb, "%s", term->config); 2775 } else 2776 ret = strbuf_addf(sb, "%s=%#"PRIx64, term->config, term->val.num); 2777 else if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR) { 2778 if (term->config) { 2779 ret = strbuf_addf(sb, "%s=", term->config); 2780 if (ret < 0) 2781 return ret; 2782 } else if ((unsigned int)term->type_term < __PARSE_EVENTS__TERM_TYPE_NR) { 2783 ret = strbuf_addf(sb, "%s=", 2784 parse_events__term_type_str(term->type_term)); 2785 if (ret < 0) 2786 return ret; 2787 } 2788 assert(!term->no_value); 2789 ret = strbuf_addf(sb, "%s", term->val.str); 2790 } 2791 if (ret < 0) 2792 return ret; 2793 } 2794 return 0; 2795 } 2796 2797 static void config_terms_list(char *buf, size_t buf_sz) 2798 { 2799 int i; 2800 bool first = true; 2801 2802 buf[0] = '\0'; 2803 for (i = 0; i < __PARSE_EVENTS__TERM_TYPE_NR; i++) { 2804 const char *name = parse_events__term_type_str(i); 2805 2806 if (!config_term_avail(i, NULL)) 2807 continue; 2808 if (!name) 2809 continue; 2810 if (name[0] == '<') 2811 continue; 2812 2813 if (strlen(buf) + strlen(name) + 2 >= buf_sz) 2814 return; 2815 2816 if (!first) 2817 strcat(buf, ","); 2818 else 2819 first = false; 2820 strcat(buf, name); 2821 } 2822 } 2823 2824 /* 2825 * Return string contains valid config terms of an event. 2826 * @additional_terms: For terms such as PMU sysfs terms. 2827 */ 2828 char *parse_events_formats_error_string(char *additional_terms) 2829 { 2830 char *str; 2831 /* "no-overwrite" is the longest name */ 2832 char static_terms[__PARSE_EVENTS__TERM_TYPE_NR * 2833 (sizeof("no-overwrite") - 1)]; 2834 2835 config_terms_list(static_terms, sizeof(static_terms)); 2836 /* valid terms */ 2837 if (additional_terms) { 2838 if (asprintf(&str, "valid terms: %s,%s", 2839 additional_terms, static_terms) < 0) 2840 goto fail; 2841 } else { 2842 if (asprintf(&str, "valid terms: %s", static_terms) < 0) 2843 goto fail; 2844 } 2845 return str; 2846 2847 fail: 2848 return NULL; 2849 } 2850