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 static int get_config_terms(const struct parse_events_terms *head_config, 35 struct list_head *head_terms); 36 static int parse_events_terms__copy(const struct parse_events_terms *src, 37 struct parse_events_terms *dest); 38 39 const struct event_symbol event_symbols_hw[PERF_COUNT_HW_MAX] = { 40 [PERF_COUNT_HW_CPU_CYCLES] = { 41 .symbol = "cpu-cycles", 42 .alias = "cycles", 43 }, 44 [PERF_COUNT_HW_INSTRUCTIONS] = { 45 .symbol = "instructions", 46 .alias = "", 47 }, 48 [PERF_COUNT_HW_CACHE_REFERENCES] = { 49 .symbol = "cache-references", 50 .alias = "", 51 }, 52 [PERF_COUNT_HW_CACHE_MISSES] = { 53 .symbol = "cache-misses", 54 .alias = "", 55 }, 56 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = { 57 .symbol = "branch-instructions", 58 .alias = "branches", 59 }, 60 [PERF_COUNT_HW_BRANCH_MISSES] = { 61 .symbol = "branch-misses", 62 .alias = "", 63 }, 64 [PERF_COUNT_HW_BUS_CYCLES] = { 65 .symbol = "bus-cycles", 66 .alias = "", 67 }, 68 [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = { 69 .symbol = "stalled-cycles-frontend", 70 .alias = "idle-cycles-frontend", 71 }, 72 [PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = { 73 .symbol = "stalled-cycles-backend", 74 .alias = "idle-cycles-backend", 75 }, 76 [PERF_COUNT_HW_REF_CPU_CYCLES] = { 77 .symbol = "ref-cycles", 78 .alias = "", 79 }, 80 }; 81 82 const struct event_symbol event_symbols_sw[PERF_COUNT_SW_MAX] = { 83 [PERF_COUNT_SW_CPU_CLOCK] = { 84 .symbol = "cpu-clock", 85 .alias = "", 86 }, 87 [PERF_COUNT_SW_TASK_CLOCK] = { 88 .symbol = "task-clock", 89 .alias = "", 90 }, 91 [PERF_COUNT_SW_PAGE_FAULTS] = { 92 .symbol = "page-faults", 93 .alias = "faults", 94 }, 95 [PERF_COUNT_SW_CONTEXT_SWITCHES] = { 96 .symbol = "context-switches", 97 .alias = "cs", 98 }, 99 [PERF_COUNT_SW_CPU_MIGRATIONS] = { 100 .symbol = "cpu-migrations", 101 .alias = "migrations", 102 }, 103 [PERF_COUNT_SW_PAGE_FAULTS_MIN] = { 104 .symbol = "minor-faults", 105 .alias = "", 106 }, 107 [PERF_COUNT_SW_PAGE_FAULTS_MAJ] = { 108 .symbol = "major-faults", 109 .alias = "", 110 }, 111 [PERF_COUNT_SW_ALIGNMENT_FAULTS] = { 112 .symbol = "alignment-faults", 113 .alias = "", 114 }, 115 [PERF_COUNT_SW_EMULATION_FAULTS] = { 116 .symbol = "emulation-faults", 117 .alias = "", 118 }, 119 [PERF_COUNT_SW_DUMMY] = { 120 .symbol = "dummy", 121 .alias = "", 122 }, 123 [PERF_COUNT_SW_BPF_OUTPUT] = { 124 .symbol = "bpf-output", 125 .alias = "", 126 }, 127 [PERF_COUNT_SW_CGROUP_SWITCHES] = { 128 .symbol = "cgroup-switches", 129 .alias = "", 130 }, 131 }; 132 133 const char *event_type(int type) 134 { 135 switch (type) { 136 case PERF_TYPE_HARDWARE: 137 return "hardware"; 138 139 case PERF_TYPE_SOFTWARE: 140 return "software"; 141 142 case PERF_TYPE_TRACEPOINT: 143 return "tracepoint"; 144 145 case PERF_TYPE_HW_CACHE: 146 return "hardware-cache"; 147 148 default: 149 break; 150 } 151 152 return "unknown"; 153 } 154 155 static char *get_config_str(const struct parse_events_terms *head_terms, 156 enum parse_events__term_type type_term) 157 { 158 struct parse_events_term *term; 159 160 if (!head_terms) 161 return NULL; 162 163 list_for_each_entry(term, &head_terms->terms, list) 164 if (term->type_term == type_term) 165 return term->val.str; 166 167 return NULL; 168 } 169 170 static char *get_config_metric_id(const struct parse_events_terms *head_terms) 171 { 172 return get_config_str(head_terms, PARSE_EVENTS__TERM_TYPE_METRIC_ID); 173 } 174 175 static char *get_config_name(const struct parse_events_terms *head_terms) 176 { 177 return get_config_str(head_terms, PARSE_EVENTS__TERM_TYPE_NAME); 178 } 179 180 /** 181 * fix_raw - For each raw term see if there is an event (aka alias) in pmu that 182 * matches the raw's string value. If the string value matches an 183 * event then change the term to be an event, if not then change it to 184 * be a config term. For example, "read" may be an event of the PMU or 185 * a raw hex encoding of 0xead. The fix-up is done late so the PMU of 186 * the event can be determined and we don't need to scan all PMUs 187 * ahead-of-time. 188 * @config_terms: the list of terms that may contain a raw term. 189 * @pmu: the PMU to scan for events from. 190 */ 191 static void fix_raw(struct parse_events_terms *config_terms, struct perf_pmu *pmu) 192 { 193 struct parse_events_term *term; 194 195 list_for_each_entry(term, &config_terms->terms, list) { 196 u64 num; 197 198 if (term->type_term != PARSE_EVENTS__TERM_TYPE_RAW) 199 continue; 200 201 if (perf_pmu__have_event(pmu, term->val.str)) { 202 zfree(&term->config); 203 term->config = term->val.str; 204 term->type_val = PARSE_EVENTS__TERM_TYPE_NUM; 205 term->type_term = PARSE_EVENTS__TERM_TYPE_USER; 206 term->val.num = 1; 207 term->no_value = true; 208 continue; 209 } 210 211 zfree(&term->config); 212 term->config = strdup("config"); 213 errno = 0; 214 num = strtoull(term->val.str + 1, NULL, 16); 215 assert(errno == 0); 216 free(term->val.str); 217 term->type_val = PARSE_EVENTS__TERM_TYPE_NUM; 218 term->type_term = PARSE_EVENTS__TERM_TYPE_CONFIG; 219 term->val.num = num; 220 term->no_value = false; 221 } 222 } 223 224 static struct evsel * 225 __add_event(struct list_head *list, int *idx, 226 struct perf_event_attr *attr, 227 bool init_attr, 228 const char *name, const char *metric_id, struct perf_pmu *pmu, 229 struct list_head *config_terms, bool auto_merge_stats, 230 const char *cpu_list) 231 { 232 struct evsel *evsel; 233 struct perf_cpu_map *cpus = pmu ? perf_cpu_map__get(pmu->cpus) : 234 cpu_list ? perf_cpu_map__new(cpu_list) : NULL; 235 236 if (pmu) 237 perf_pmu__warn_invalid_formats(pmu); 238 239 if (pmu && (attr->type == PERF_TYPE_RAW || attr->type >= PERF_TYPE_MAX)) { 240 perf_pmu__warn_invalid_config(pmu, attr->config, name, 241 PERF_PMU_FORMAT_VALUE_CONFIG, "config"); 242 perf_pmu__warn_invalid_config(pmu, attr->config1, name, 243 PERF_PMU_FORMAT_VALUE_CONFIG1, "config1"); 244 perf_pmu__warn_invalid_config(pmu, attr->config2, name, 245 PERF_PMU_FORMAT_VALUE_CONFIG2, "config2"); 246 perf_pmu__warn_invalid_config(pmu, attr->config3, name, 247 PERF_PMU_FORMAT_VALUE_CONFIG3, "config3"); 248 } 249 if (init_attr) 250 event_attr_init(attr); 251 252 evsel = evsel__new_idx(attr, *idx); 253 if (!evsel) { 254 perf_cpu_map__put(cpus); 255 return NULL; 256 } 257 258 (*idx)++; 259 evsel->core.cpus = cpus; 260 evsel->core.own_cpus = perf_cpu_map__get(cpus); 261 evsel->core.requires_cpu = pmu ? pmu->is_uncore : false; 262 evsel->core.is_pmu_core = pmu ? pmu->is_core : false; 263 evsel->auto_merge_stats = auto_merge_stats; 264 evsel->pmu = pmu; 265 evsel->pmu_name = pmu ? strdup(pmu->name) : NULL; 266 267 if (name) 268 evsel->name = strdup(name); 269 270 if (metric_id) 271 evsel->metric_id = strdup(metric_id); 272 273 if (config_terms) 274 list_splice_init(config_terms, &evsel->config_terms); 275 276 if (list) 277 list_add_tail(&evsel->core.node, list); 278 279 return evsel; 280 } 281 282 struct evsel *parse_events__add_event(int idx, struct perf_event_attr *attr, 283 const char *name, const char *metric_id, 284 struct perf_pmu *pmu) 285 { 286 return __add_event(/*list=*/NULL, &idx, attr, /*init_attr=*/false, name, 287 metric_id, pmu, /*config_terms=*/NULL, 288 /*auto_merge_stats=*/false, /*cpu_list=*/NULL); 289 } 290 291 static int add_event(struct list_head *list, int *idx, 292 struct perf_event_attr *attr, const char *name, 293 const char *metric_id, struct list_head *config_terms) 294 { 295 return __add_event(list, idx, attr, /*init_attr*/true, name, metric_id, 296 /*pmu=*/NULL, config_terms, 297 /*auto_merge_stats=*/false, /*cpu_list=*/NULL) ? 0 : -ENOMEM; 298 } 299 300 static int add_event_tool(struct list_head *list, int *idx, 301 enum perf_tool_event tool_event) 302 { 303 struct evsel *evsel; 304 struct perf_event_attr attr = { 305 .type = PERF_TYPE_SOFTWARE, 306 .config = PERF_COUNT_SW_DUMMY, 307 }; 308 const char *cpu_list = NULL; 309 310 if (tool_event == PERF_TOOL_DURATION_TIME) { 311 /* Duration time is gathered globally, pretend it is only on CPU0. */ 312 cpu_list = "0"; 313 } 314 evsel = __add_event(list, idx, &attr, /*init_attr=*/true, /*name=*/NULL, 315 /*metric_id=*/NULL, /*pmu=*/NULL, 316 /*config_terms=*/NULL, /*auto_merge_stats=*/false, 317 cpu_list); 318 if (!evsel) 319 return -ENOMEM; 320 evsel->tool_event = tool_event; 321 if (tool_event == PERF_TOOL_DURATION_TIME 322 || tool_event == PERF_TOOL_USER_TIME 323 || tool_event == PERF_TOOL_SYSTEM_TIME) { 324 free((char *)evsel->unit); 325 evsel->unit = strdup("ns"); 326 } 327 return 0; 328 } 329 330 /** 331 * parse_aliases - search names for entries beginning or equalling str ignoring 332 * case. If mutliple entries in names match str then the longest 333 * is chosen. 334 * @str: The needle to look for. 335 * @names: The haystack to search. 336 * @size: The size of the haystack. 337 * @longest: Out argument giving the length of the matching entry. 338 */ 339 static int parse_aliases(const char *str, const char *const names[][EVSEL__MAX_ALIASES], int size, 340 int *longest) 341 { 342 *longest = -1; 343 for (int i = 0; i < size; i++) { 344 for (int j = 0; j < EVSEL__MAX_ALIASES && names[i][j]; j++) { 345 int n = strlen(names[i][j]); 346 347 if (n > *longest && !strncasecmp(str, names[i][j], n)) 348 *longest = n; 349 } 350 if (*longest > 0) 351 return i; 352 } 353 354 return -1; 355 } 356 357 typedef int config_term_func_t(struct perf_event_attr *attr, 358 struct parse_events_term *term, 359 struct parse_events_error *err); 360 static int config_term_common(struct perf_event_attr *attr, 361 struct parse_events_term *term, 362 struct parse_events_error *err); 363 static int config_attr(struct perf_event_attr *attr, 364 const struct parse_events_terms *head, 365 struct parse_events_error *err, 366 config_term_func_t config_term); 367 368 /** 369 * parse_events__decode_legacy_cache - Search name for the legacy cache event 370 * name composed of 1, 2 or 3 hyphen 371 * separated sections. The first section is 372 * the cache type while the others are the 373 * optional op and optional result. To make 374 * life hard the names in the table also 375 * contain hyphens and the longest name 376 * should always be selected. 377 */ 378 int parse_events__decode_legacy_cache(const char *name, int extended_pmu_type, __u64 *config) 379 { 380 int len, cache_type = -1, cache_op = -1, cache_result = -1; 381 const char *name_end = &name[strlen(name) + 1]; 382 const char *str = name; 383 384 cache_type = parse_aliases(str, evsel__hw_cache, PERF_COUNT_HW_CACHE_MAX, &len); 385 if (cache_type == -1) 386 return -EINVAL; 387 str += len + 1; 388 389 if (str < name_end) { 390 cache_op = parse_aliases(str, evsel__hw_cache_op, 391 PERF_COUNT_HW_CACHE_OP_MAX, &len); 392 if (cache_op >= 0) { 393 if (!evsel__is_cache_op_valid(cache_type, cache_op)) 394 return -EINVAL; 395 str += len + 1; 396 } else { 397 cache_result = parse_aliases(str, evsel__hw_cache_result, 398 PERF_COUNT_HW_CACHE_RESULT_MAX, &len); 399 if (cache_result >= 0) 400 str += len + 1; 401 } 402 } 403 if (str < name_end) { 404 if (cache_op < 0) { 405 cache_op = parse_aliases(str, evsel__hw_cache_op, 406 PERF_COUNT_HW_CACHE_OP_MAX, &len); 407 if (cache_op >= 0) { 408 if (!evsel__is_cache_op_valid(cache_type, cache_op)) 409 return -EINVAL; 410 } 411 } else if (cache_result < 0) { 412 cache_result = parse_aliases(str, evsel__hw_cache_result, 413 PERF_COUNT_HW_CACHE_RESULT_MAX, &len); 414 } 415 } 416 417 /* 418 * Fall back to reads: 419 */ 420 if (cache_op == -1) 421 cache_op = PERF_COUNT_HW_CACHE_OP_READ; 422 423 /* 424 * Fall back to accesses: 425 */ 426 if (cache_result == -1) 427 cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS; 428 429 *config = cache_type | (cache_op << 8) | (cache_result << 16); 430 if (perf_pmus__supports_extended_type()) 431 *config |= (__u64)extended_pmu_type << PERF_PMU_TYPE_SHIFT; 432 return 0; 433 } 434 435 /** 436 * parse_events__filter_pmu - returns false if a wildcard PMU should be 437 * considered, true if it should be filtered. 438 */ 439 bool parse_events__filter_pmu(const struct parse_events_state *parse_state, 440 const struct perf_pmu *pmu) 441 { 442 if (parse_state->pmu_filter == NULL) 443 return false; 444 445 return strcmp(parse_state->pmu_filter, pmu->name) != 0; 446 } 447 448 static int parse_events_add_pmu(struct parse_events_state *parse_state, 449 struct list_head *list, struct perf_pmu *pmu, 450 const struct parse_events_terms *const_parsed_terms, 451 bool auto_merge_stats); 452 453 int parse_events_add_cache(struct list_head *list, int *idx, const char *name, 454 struct parse_events_state *parse_state, 455 struct parse_events_terms *parsed_terms) 456 { 457 struct perf_pmu *pmu = NULL; 458 bool found_supported = false; 459 const char *config_name = get_config_name(parsed_terms); 460 const char *metric_id = get_config_metric_id(parsed_terms); 461 462 while ((pmu = perf_pmus__scan(pmu)) != NULL) { 463 LIST_HEAD(config_terms); 464 struct perf_event_attr attr; 465 int ret; 466 467 if (parse_events__filter_pmu(parse_state, pmu)) 468 continue; 469 470 if (perf_pmu__have_event(pmu, name)) { 471 /* 472 * The PMU has the event so add as not a legacy cache 473 * event. 474 */ 475 ret = parse_events_add_pmu(parse_state, list, pmu, 476 parsed_terms, 477 perf_pmu__auto_merge_stats(pmu)); 478 if (ret) 479 return ret; 480 continue; 481 } 482 483 if (!pmu->is_core) { 484 /* Legacy cache events are only supported by core PMUs. */ 485 continue; 486 } 487 488 memset(&attr, 0, sizeof(attr)); 489 attr.type = PERF_TYPE_HW_CACHE; 490 491 ret = parse_events__decode_legacy_cache(name, pmu->type, &attr.config); 492 if (ret) 493 return ret; 494 495 found_supported = true; 496 497 if (parsed_terms) { 498 if (config_attr(&attr, parsed_terms, parse_state->error, 499 config_term_common)) 500 return -EINVAL; 501 502 if (get_config_terms(parsed_terms, &config_terms)) 503 return -ENOMEM; 504 } 505 506 if (__add_event(list, idx, &attr, /*init_attr*/true, config_name ?: name, 507 metric_id, pmu, &config_terms, /*auto_merge_stats=*/false, 508 /*cpu_list=*/NULL) == NULL) 509 return -ENOMEM; 510 511 free_config_terms(&config_terms); 512 } 513 return found_supported ? 0 : -EINVAL; 514 } 515 516 #ifdef HAVE_LIBTRACEEVENT 517 static void tracepoint_error(struct parse_events_error *e, int err, 518 const char *sys, const char *name, int column) 519 { 520 const char *str; 521 char help[BUFSIZ]; 522 523 if (!e) 524 return; 525 526 /* 527 * We get error directly from syscall errno ( > 0), 528 * or from encoded pointer's error ( < 0). 529 */ 530 err = abs(err); 531 532 switch (err) { 533 case EACCES: 534 str = "can't access trace events"; 535 break; 536 case ENOENT: 537 str = "unknown tracepoint"; 538 break; 539 default: 540 str = "failed to add tracepoint"; 541 break; 542 } 543 544 tracing_path__strerror_open_tp(err, help, sizeof(help), sys, name); 545 parse_events_error__handle(e, column, strdup(str), strdup(help)); 546 } 547 548 static int add_tracepoint(struct parse_events_state *parse_state, 549 struct list_head *list, 550 const char *sys_name, const char *evt_name, 551 struct parse_events_error *err, 552 struct parse_events_terms *head_config, void *loc_) 553 { 554 YYLTYPE *loc = loc_; 555 struct evsel *evsel = evsel__newtp_idx(sys_name, evt_name, parse_state->idx++, 556 !parse_state->fake_tp); 557 558 if (IS_ERR(evsel)) { 559 tracepoint_error(err, PTR_ERR(evsel), sys_name, evt_name, loc->first_column); 560 return PTR_ERR(evsel); 561 } 562 563 if (head_config) { 564 LIST_HEAD(config_terms); 565 566 if (get_config_terms(head_config, &config_terms)) 567 return -ENOMEM; 568 list_splice(&config_terms, &evsel->config_terms); 569 } 570 571 list_add_tail(&evsel->core.node, list); 572 return 0; 573 } 574 575 static int add_tracepoint_multi_event(struct parse_events_state *parse_state, 576 struct list_head *list, 577 const char *sys_name, const char *evt_name, 578 struct parse_events_error *err, 579 struct parse_events_terms *head_config, YYLTYPE *loc) 580 { 581 char *evt_path; 582 struct dirent *evt_ent; 583 DIR *evt_dir; 584 int ret = 0, found = 0; 585 586 evt_path = get_events_file(sys_name); 587 if (!evt_path) { 588 tracepoint_error(err, errno, sys_name, evt_name, loc->first_column); 589 return -1; 590 } 591 evt_dir = opendir(evt_path); 592 if (!evt_dir) { 593 put_events_file(evt_path); 594 tracepoint_error(err, errno, sys_name, evt_name, loc->first_column); 595 return -1; 596 } 597 598 while (!ret && (evt_ent = readdir(evt_dir))) { 599 if (!strcmp(evt_ent->d_name, ".") 600 || !strcmp(evt_ent->d_name, "..") 601 || !strcmp(evt_ent->d_name, "enable") 602 || !strcmp(evt_ent->d_name, "filter")) 603 continue; 604 605 if (!strglobmatch(evt_ent->d_name, evt_name)) 606 continue; 607 608 found++; 609 610 ret = add_tracepoint(parse_state, list, sys_name, evt_ent->d_name, 611 err, head_config, loc); 612 } 613 614 if (!found) { 615 tracepoint_error(err, ENOENT, sys_name, evt_name, loc->first_column); 616 ret = -1; 617 } 618 619 put_events_file(evt_path); 620 closedir(evt_dir); 621 return ret; 622 } 623 624 static int add_tracepoint_event(struct parse_events_state *parse_state, 625 struct list_head *list, 626 const char *sys_name, const char *evt_name, 627 struct parse_events_error *err, 628 struct parse_events_terms *head_config, YYLTYPE *loc) 629 { 630 return strpbrk(evt_name, "*?") ? 631 add_tracepoint_multi_event(parse_state, list, sys_name, evt_name, 632 err, head_config, loc) : 633 add_tracepoint(parse_state, list, sys_name, evt_name, 634 err, head_config, loc); 635 } 636 637 static int add_tracepoint_multi_sys(struct parse_events_state *parse_state, 638 struct list_head *list, 639 const char *sys_name, const char *evt_name, 640 struct parse_events_error *err, 641 struct parse_events_terms *head_config, YYLTYPE *loc) 642 { 643 struct dirent *events_ent; 644 DIR *events_dir; 645 int ret = 0; 646 647 events_dir = tracing_events__opendir(); 648 if (!events_dir) { 649 tracepoint_error(err, errno, sys_name, evt_name, loc->first_column); 650 return -1; 651 } 652 653 while (!ret && (events_ent = readdir(events_dir))) { 654 if (!strcmp(events_ent->d_name, ".") 655 || !strcmp(events_ent->d_name, "..") 656 || !strcmp(events_ent->d_name, "enable") 657 || !strcmp(events_ent->d_name, "header_event") 658 || !strcmp(events_ent->d_name, "header_page")) 659 continue; 660 661 if (!strglobmatch(events_ent->d_name, sys_name)) 662 continue; 663 664 ret = add_tracepoint_event(parse_state, list, events_ent->d_name, 665 evt_name, err, head_config, loc); 666 } 667 668 closedir(events_dir); 669 return ret; 670 } 671 #endif /* HAVE_LIBTRACEEVENT */ 672 673 static int 674 parse_breakpoint_type(const char *type, struct perf_event_attr *attr) 675 { 676 int i; 677 678 for (i = 0; i < 3; i++) { 679 if (!type || !type[i]) 680 break; 681 682 #define CHECK_SET_TYPE(bit) \ 683 do { \ 684 if (attr->bp_type & bit) \ 685 return -EINVAL; \ 686 else \ 687 attr->bp_type |= bit; \ 688 } while (0) 689 690 switch (type[i]) { 691 case 'r': 692 CHECK_SET_TYPE(HW_BREAKPOINT_R); 693 break; 694 case 'w': 695 CHECK_SET_TYPE(HW_BREAKPOINT_W); 696 break; 697 case 'x': 698 CHECK_SET_TYPE(HW_BREAKPOINT_X); 699 break; 700 default: 701 return -EINVAL; 702 } 703 } 704 705 #undef CHECK_SET_TYPE 706 707 if (!attr->bp_type) /* Default */ 708 attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W; 709 710 return 0; 711 } 712 713 int parse_events_add_breakpoint(struct parse_events_state *parse_state, 714 struct list_head *list, 715 u64 addr, char *type, u64 len, 716 struct parse_events_terms *head_config) 717 { 718 struct perf_event_attr attr; 719 LIST_HEAD(config_terms); 720 const char *name; 721 722 memset(&attr, 0, sizeof(attr)); 723 attr.bp_addr = addr; 724 725 if (parse_breakpoint_type(type, &attr)) 726 return -EINVAL; 727 728 /* Provide some defaults if len is not specified */ 729 if (!len) { 730 if (attr.bp_type == HW_BREAKPOINT_X) 731 len = sizeof(long); 732 else 733 len = HW_BREAKPOINT_LEN_4; 734 } 735 736 attr.bp_len = len; 737 738 attr.type = PERF_TYPE_BREAKPOINT; 739 attr.sample_period = 1; 740 741 if (head_config) { 742 if (config_attr(&attr, head_config, parse_state->error, 743 config_term_common)) 744 return -EINVAL; 745 746 if (get_config_terms(head_config, &config_terms)) 747 return -ENOMEM; 748 } 749 750 name = get_config_name(head_config); 751 752 return add_event(list, &parse_state->idx, &attr, name, /*mertic_id=*/NULL, 753 &config_terms); 754 } 755 756 static int check_type_val(struct parse_events_term *term, 757 struct parse_events_error *err, 758 enum parse_events__term_val_type type) 759 { 760 if (type == term->type_val) 761 return 0; 762 763 if (err) { 764 parse_events_error__handle(err, term->err_val, 765 type == PARSE_EVENTS__TERM_TYPE_NUM 766 ? strdup("expected numeric value") 767 : strdup("expected string value"), 768 NULL); 769 } 770 return -EINVAL; 771 } 772 773 static bool config_term_shrinked; 774 775 static const char *config_term_name(enum parse_events__term_type term_type) 776 { 777 /* 778 * Update according to parse-events.l 779 */ 780 static const char *config_term_names[__PARSE_EVENTS__TERM_TYPE_NR] = { 781 [PARSE_EVENTS__TERM_TYPE_USER] = "<sysfs term>", 782 [PARSE_EVENTS__TERM_TYPE_CONFIG] = "config", 783 [PARSE_EVENTS__TERM_TYPE_CONFIG1] = "config1", 784 [PARSE_EVENTS__TERM_TYPE_CONFIG2] = "config2", 785 [PARSE_EVENTS__TERM_TYPE_CONFIG3] = "config3", 786 [PARSE_EVENTS__TERM_TYPE_NAME] = "name", 787 [PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD] = "period", 788 [PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ] = "freq", 789 [PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE] = "branch_type", 790 [PARSE_EVENTS__TERM_TYPE_TIME] = "time", 791 [PARSE_EVENTS__TERM_TYPE_CALLGRAPH] = "call-graph", 792 [PARSE_EVENTS__TERM_TYPE_STACKSIZE] = "stack-size", 793 [PARSE_EVENTS__TERM_TYPE_NOINHERIT] = "no-inherit", 794 [PARSE_EVENTS__TERM_TYPE_INHERIT] = "inherit", 795 [PARSE_EVENTS__TERM_TYPE_MAX_STACK] = "max-stack", 796 [PARSE_EVENTS__TERM_TYPE_MAX_EVENTS] = "nr", 797 [PARSE_EVENTS__TERM_TYPE_OVERWRITE] = "overwrite", 798 [PARSE_EVENTS__TERM_TYPE_NOOVERWRITE] = "no-overwrite", 799 [PARSE_EVENTS__TERM_TYPE_DRV_CFG] = "driver-config", 800 [PARSE_EVENTS__TERM_TYPE_PERCORE] = "percore", 801 [PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT] = "aux-output", 802 [PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE] = "aux-sample-size", 803 [PARSE_EVENTS__TERM_TYPE_METRIC_ID] = "metric-id", 804 [PARSE_EVENTS__TERM_TYPE_RAW] = "raw", 805 [PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE] = "legacy-cache", 806 [PARSE_EVENTS__TERM_TYPE_HARDWARE] = "hardware", 807 }; 808 if ((unsigned int)term_type >= __PARSE_EVENTS__TERM_TYPE_NR) 809 return "unknown term"; 810 811 return config_term_names[term_type]; 812 } 813 814 static bool 815 config_term_avail(enum parse_events__term_type term_type, struct parse_events_error *err) 816 { 817 char *err_str; 818 819 if (term_type < 0 || term_type >= __PARSE_EVENTS__TERM_TYPE_NR) { 820 parse_events_error__handle(err, -1, 821 strdup("Invalid term_type"), NULL); 822 return false; 823 } 824 if (!config_term_shrinked) 825 return true; 826 827 switch (term_type) { 828 case PARSE_EVENTS__TERM_TYPE_CONFIG: 829 case PARSE_EVENTS__TERM_TYPE_CONFIG1: 830 case PARSE_EVENTS__TERM_TYPE_CONFIG2: 831 case PARSE_EVENTS__TERM_TYPE_CONFIG3: 832 case PARSE_EVENTS__TERM_TYPE_NAME: 833 case PARSE_EVENTS__TERM_TYPE_METRIC_ID: 834 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD: 835 case PARSE_EVENTS__TERM_TYPE_PERCORE: 836 return true; 837 case PARSE_EVENTS__TERM_TYPE_USER: 838 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ: 839 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE: 840 case PARSE_EVENTS__TERM_TYPE_TIME: 841 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH: 842 case PARSE_EVENTS__TERM_TYPE_STACKSIZE: 843 case PARSE_EVENTS__TERM_TYPE_NOINHERIT: 844 case PARSE_EVENTS__TERM_TYPE_INHERIT: 845 case PARSE_EVENTS__TERM_TYPE_MAX_STACK: 846 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS: 847 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE: 848 case PARSE_EVENTS__TERM_TYPE_OVERWRITE: 849 case PARSE_EVENTS__TERM_TYPE_DRV_CFG: 850 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT: 851 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE: 852 case PARSE_EVENTS__TERM_TYPE_RAW: 853 case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE: 854 case PARSE_EVENTS__TERM_TYPE_HARDWARE: 855 default: 856 if (!err) 857 return false; 858 859 /* term_type is validated so indexing is safe */ 860 if (asprintf(&err_str, "'%s' is not usable in 'perf stat'", 861 config_term_name(term_type)) >= 0) 862 parse_events_error__handle(err, -1, err_str, NULL); 863 return false; 864 } 865 } 866 867 void parse_events__shrink_config_terms(void) 868 { 869 config_term_shrinked = true; 870 } 871 872 static int config_term_common(struct perf_event_attr *attr, 873 struct parse_events_term *term, 874 struct parse_events_error *err) 875 { 876 #define CHECK_TYPE_VAL(type) \ 877 do { \ 878 if (check_type_val(term, err, PARSE_EVENTS__TERM_TYPE_ ## type)) \ 879 return -EINVAL; \ 880 } while (0) 881 882 switch (term->type_term) { 883 case PARSE_EVENTS__TERM_TYPE_CONFIG: 884 CHECK_TYPE_VAL(NUM); 885 attr->config = term->val.num; 886 break; 887 case PARSE_EVENTS__TERM_TYPE_CONFIG1: 888 CHECK_TYPE_VAL(NUM); 889 attr->config1 = term->val.num; 890 break; 891 case PARSE_EVENTS__TERM_TYPE_CONFIG2: 892 CHECK_TYPE_VAL(NUM); 893 attr->config2 = term->val.num; 894 break; 895 case PARSE_EVENTS__TERM_TYPE_CONFIG3: 896 CHECK_TYPE_VAL(NUM); 897 attr->config3 = term->val.num; 898 break; 899 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD: 900 CHECK_TYPE_VAL(NUM); 901 break; 902 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ: 903 CHECK_TYPE_VAL(NUM); 904 break; 905 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE: 906 CHECK_TYPE_VAL(STR); 907 if (strcmp(term->val.str, "no") && 908 parse_branch_str(term->val.str, 909 &attr->branch_sample_type)) { 910 parse_events_error__handle(err, term->err_val, 911 strdup("invalid branch sample type"), 912 NULL); 913 return -EINVAL; 914 } 915 break; 916 case PARSE_EVENTS__TERM_TYPE_TIME: 917 CHECK_TYPE_VAL(NUM); 918 if (term->val.num > 1) { 919 parse_events_error__handle(err, term->err_val, 920 strdup("expected 0 or 1"), 921 NULL); 922 return -EINVAL; 923 } 924 break; 925 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH: 926 CHECK_TYPE_VAL(STR); 927 break; 928 case PARSE_EVENTS__TERM_TYPE_STACKSIZE: 929 CHECK_TYPE_VAL(NUM); 930 break; 931 case PARSE_EVENTS__TERM_TYPE_INHERIT: 932 CHECK_TYPE_VAL(NUM); 933 break; 934 case PARSE_EVENTS__TERM_TYPE_NOINHERIT: 935 CHECK_TYPE_VAL(NUM); 936 break; 937 case PARSE_EVENTS__TERM_TYPE_OVERWRITE: 938 CHECK_TYPE_VAL(NUM); 939 break; 940 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE: 941 CHECK_TYPE_VAL(NUM); 942 break; 943 case PARSE_EVENTS__TERM_TYPE_NAME: 944 CHECK_TYPE_VAL(STR); 945 break; 946 case PARSE_EVENTS__TERM_TYPE_METRIC_ID: 947 CHECK_TYPE_VAL(STR); 948 break; 949 case PARSE_EVENTS__TERM_TYPE_RAW: 950 CHECK_TYPE_VAL(STR); 951 break; 952 case PARSE_EVENTS__TERM_TYPE_MAX_STACK: 953 CHECK_TYPE_VAL(NUM); 954 break; 955 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS: 956 CHECK_TYPE_VAL(NUM); 957 break; 958 case PARSE_EVENTS__TERM_TYPE_PERCORE: 959 CHECK_TYPE_VAL(NUM); 960 if ((unsigned int)term->val.num > 1) { 961 parse_events_error__handle(err, term->err_val, 962 strdup("expected 0 or 1"), 963 NULL); 964 return -EINVAL; 965 } 966 break; 967 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT: 968 CHECK_TYPE_VAL(NUM); 969 break; 970 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE: 971 CHECK_TYPE_VAL(NUM); 972 if (term->val.num > UINT_MAX) { 973 parse_events_error__handle(err, term->err_val, 974 strdup("too big"), 975 NULL); 976 return -EINVAL; 977 } 978 break; 979 case PARSE_EVENTS__TERM_TYPE_DRV_CFG: 980 case PARSE_EVENTS__TERM_TYPE_USER: 981 case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE: 982 case PARSE_EVENTS__TERM_TYPE_HARDWARE: 983 default: 984 parse_events_error__handle(err, term->err_term, 985 strdup(config_term_name(term->type_term)), 986 parse_events_formats_error_string(NULL)); 987 return -EINVAL; 988 } 989 990 /* 991 * Check term availability after basic checking so 992 * PARSE_EVENTS__TERM_TYPE_USER can be found and filtered. 993 * 994 * If check availability at the entry of this function, 995 * user will see "'<sysfs term>' is not usable in 'perf stat'" 996 * if an invalid config term is provided for legacy events 997 * (for example, instructions/badterm/...), which is confusing. 998 */ 999 if (!config_term_avail(term->type_term, err)) 1000 return -EINVAL; 1001 return 0; 1002 #undef CHECK_TYPE_VAL 1003 } 1004 1005 static int config_term_pmu(struct perf_event_attr *attr, 1006 struct parse_events_term *term, 1007 struct parse_events_error *err) 1008 { 1009 if (term->type_term == PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE) { 1010 struct perf_pmu *pmu = perf_pmus__find_by_type(attr->type); 1011 1012 if (!pmu) { 1013 char *err_str; 1014 1015 if (asprintf(&err_str, "Failed to find PMU for type %d", attr->type) >= 0) 1016 parse_events_error__handle(err, term->err_term, 1017 err_str, /*help=*/NULL); 1018 return -EINVAL; 1019 } 1020 /* 1021 * Rewrite the PMU event to a legacy cache one unless the PMU 1022 * doesn't support legacy cache events or the event is present 1023 * within the PMU. 1024 */ 1025 if (perf_pmu__supports_legacy_cache(pmu) && 1026 !perf_pmu__have_event(pmu, term->config)) { 1027 attr->type = PERF_TYPE_HW_CACHE; 1028 return parse_events__decode_legacy_cache(term->config, pmu->type, 1029 &attr->config); 1030 } else { 1031 term->type_term = PARSE_EVENTS__TERM_TYPE_USER; 1032 term->no_value = true; 1033 } 1034 } 1035 if (term->type_term == PARSE_EVENTS__TERM_TYPE_HARDWARE) { 1036 struct perf_pmu *pmu = perf_pmus__find_by_type(attr->type); 1037 1038 if (!pmu) { 1039 char *err_str; 1040 1041 if (asprintf(&err_str, "Failed to find PMU for type %d", attr->type) >= 0) 1042 parse_events_error__handle(err, term->err_term, 1043 err_str, /*help=*/NULL); 1044 return -EINVAL; 1045 } 1046 /* 1047 * If the PMU has a sysfs or json event prefer it over 1048 * legacy. ARM requires this. 1049 */ 1050 if (perf_pmu__have_event(pmu, term->config)) { 1051 term->type_term = PARSE_EVENTS__TERM_TYPE_USER; 1052 term->no_value = true; 1053 } else { 1054 attr->type = PERF_TYPE_HARDWARE; 1055 attr->config = term->val.num; 1056 if (perf_pmus__supports_extended_type()) 1057 attr->config |= (__u64)pmu->type << PERF_PMU_TYPE_SHIFT; 1058 } 1059 return 0; 1060 } 1061 if (term->type_term == PARSE_EVENTS__TERM_TYPE_USER || 1062 term->type_term == PARSE_EVENTS__TERM_TYPE_DRV_CFG) { 1063 /* 1064 * Always succeed for sysfs terms, as we dont know 1065 * at this point what type they need to have. 1066 */ 1067 return 0; 1068 } 1069 return config_term_common(attr, term, err); 1070 } 1071 1072 #ifdef HAVE_LIBTRACEEVENT 1073 static int config_term_tracepoint(struct perf_event_attr *attr, 1074 struct parse_events_term *term, 1075 struct parse_events_error *err) 1076 { 1077 switch (term->type_term) { 1078 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH: 1079 case PARSE_EVENTS__TERM_TYPE_STACKSIZE: 1080 case PARSE_EVENTS__TERM_TYPE_INHERIT: 1081 case PARSE_EVENTS__TERM_TYPE_NOINHERIT: 1082 case PARSE_EVENTS__TERM_TYPE_MAX_STACK: 1083 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS: 1084 case PARSE_EVENTS__TERM_TYPE_OVERWRITE: 1085 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE: 1086 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT: 1087 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE: 1088 return config_term_common(attr, term, err); 1089 case PARSE_EVENTS__TERM_TYPE_USER: 1090 case PARSE_EVENTS__TERM_TYPE_CONFIG: 1091 case PARSE_EVENTS__TERM_TYPE_CONFIG1: 1092 case PARSE_EVENTS__TERM_TYPE_CONFIG2: 1093 case PARSE_EVENTS__TERM_TYPE_CONFIG3: 1094 case PARSE_EVENTS__TERM_TYPE_NAME: 1095 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD: 1096 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ: 1097 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE: 1098 case PARSE_EVENTS__TERM_TYPE_TIME: 1099 case PARSE_EVENTS__TERM_TYPE_DRV_CFG: 1100 case PARSE_EVENTS__TERM_TYPE_PERCORE: 1101 case PARSE_EVENTS__TERM_TYPE_METRIC_ID: 1102 case PARSE_EVENTS__TERM_TYPE_RAW: 1103 case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE: 1104 case PARSE_EVENTS__TERM_TYPE_HARDWARE: 1105 default: 1106 if (err) { 1107 parse_events_error__handle(err, term->err_term, 1108 strdup(config_term_name(term->type_term)), 1109 strdup("valid terms: call-graph,stack-size\n")); 1110 } 1111 return -EINVAL; 1112 } 1113 1114 return 0; 1115 } 1116 #endif 1117 1118 static int config_attr(struct perf_event_attr *attr, 1119 const struct parse_events_terms *head, 1120 struct parse_events_error *err, 1121 config_term_func_t config_term) 1122 { 1123 struct parse_events_term *term; 1124 1125 list_for_each_entry(term, &head->terms, list) 1126 if (config_term(attr, term, err)) 1127 return -EINVAL; 1128 1129 return 0; 1130 } 1131 1132 static int get_config_terms(const struct parse_events_terms *head_config, 1133 struct list_head *head_terms) 1134 { 1135 #define ADD_CONFIG_TERM(__type, __weak) \ 1136 struct evsel_config_term *__t; \ 1137 \ 1138 __t = zalloc(sizeof(*__t)); \ 1139 if (!__t) \ 1140 return -ENOMEM; \ 1141 \ 1142 INIT_LIST_HEAD(&__t->list); \ 1143 __t->type = EVSEL__CONFIG_TERM_ ## __type; \ 1144 __t->weak = __weak; \ 1145 list_add_tail(&__t->list, head_terms) 1146 1147 #define ADD_CONFIG_TERM_VAL(__type, __name, __val, __weak) \ 1148 do { \ 1149 ADD_CONFIG_TERM(__type, __weak); \ 1150 __t->val.__name = __val; \ 1151 } while (0) 1152 1153 #define ADD_CONFIG_TERM_STR(__type, __val, __weak) \ 1154 do { \ 1155 ADD_CONFIG_TERM(__type, __weak); \ 1156 __t->val.str = strdup(__val); \ 1157 if (!__t->val.str) { \ 1158 zfree(&__t); \ 1159 return -ENOMEM; \ 1160 } \ 1161 __t->free_str = true; \ 1162 } while (0) 1163 1164 struct parse_events_term *term; 1165 1166 list_for_each_entry(term, &head_config->terms, list) { 1167 switch (term->type_term) { 1168 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD: 1169 ADD_CONFIG_TERM_VAL(PERIOD, period, term->val.num, term->weak); 1170 break; 1171 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ: 1172 ADD_CONFIG_TERM_VAL(FREQ, freq, term->val.num, term->weak); 1173 break; 1174 case PARSE_EVENTS__TERM_TYPE_TIME: 1175 ADD_CONFIG_TERM_VAL(TIME, time, term->val.num, term->weak); 1176 break; 1177 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH: 1178 ADD_CONFIG_TERM_STR(CALLGRAPH, term->val.str, term->weak); 1179 break; 1180 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE: 1181 ADD_CONFIG_TERM_STR(BRANCH, term->val.str, term->weak); 1182 break; 1183 case PARSE_EVENTS__TERM_TYPE_STACKSIZE: 1184 ADD_CONFIG_TERM_VAL(STACK_USER, stack_user, 1185 term->val.num, term->weak); 1186 break; 1187 case PARSE_EVENTS__TERM_TYPE_INHERIT: 1188 ADD_CONFIG_TERM_VAL(INHERIT, inherit, 1189 term->val.num ? 1 : 0, term->weak); 1190 break; 1191 case PARSE_EVENTS__TERM_TYPE_NOINHERIT: 1192 ADD_CONFIG_TERM_VAL(INHERIT, inherit, 1193 term->val.num ? 0 : 1, term->weak); 1194 break; 1195 case PARSE_EVENTS__TERM_TYPE_MAX_STACK: 1196 ADD_CONFIG_TERM_VAL(MAX_STACK, max_stack, 1197 term->val.num, term->weak); 1198 break; 1199 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS: 1200 ADD_CONFIG_TERM_VAL(MAX_EVENTS, max_events, 1201 term->val.num, term->weak); 1202 break; 1203 case PARSE_EVENTS__TERM_TYPE_OVERWRITE: 1204 ADD_CONFIG_TERM_VAL(OVERWRITE, overwrite, 1205 term->val.num ? 1 : 0, term->weak); 1206 break; 1207 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE: 1208 ADD_CONFIG_TERM_VAL(OVERWRITE, overwrite, 1209 term->val.num ? 0 : 1, term->weak); 1210 break; 1211 case PARSE_EVENTS__TERM_TYPE_DRV_CFG: 1212 ADD_CONFIG_TERM_STR(DRV_CFG, term->val.str, term->weak); 1213 break; 1214 case PARSE_EVENTS__TERM_TYPE_PERCORE: 1215 ADD_CONFIG_TERM_VAL(PERCORE, percore, 1216 term->val.num ? true : false, term->weak); 1217 break; 1218 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT: 1219 ADD_CONFIG_TERM_VAL(AUX_OUTPUT, aux_output, 1220 term->val.num ? 1 : 0, term->weak); 1221 break; 1222 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE: 1223 ADD_CONFIG_TERM_VAL(AUX_SAMPLE_SIZE, aux_sample_size, 1224 term->val.num, term->weak); 1225 break; 1226 case PARSE_EVENTS__TERM_TYPE_USER: 1227 case PARSE_EVENTS__TERM_TYPE_CONFIG: 1228 case PARSE_EVENTS__TERM_TYPE_CONFIG1: 1229 case PARSE_EVENTS__TERM_TYPE_CONFIG2: 1230 case PARSE_EVENTS__TERM_TYPE_CONFIG3: 1231 case PARSE_EVENTS__TERM_TYPE_NAME: 1232 case PARSE_EVENTS__TERM_TYPE_METRIC_ID: 1233 case PARSE_EVENTS__TERM_TYPE_RAW: 1234 case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE: 1235 case PARSE_EVENTS__TERM_TYPE_HARDWARE: 1236 default: 1237 break; 1238 } 1239 } 1240 return 0; 1241 } 1242 1243 /* 1244 * Add EVSEL__CONFIG_TERM_CFG_CHG where cfg_chg will have a bit set for 1245 * each bit of attr->config that the user has changed. 1246 */ 1247 static int get_config_chgs(struct perf_pmu *pmu, struct parse_events_terms *head_config, 1248 struct list_head *head_terms) 1249 { 1250 struct parse_events_term *term; 1251 u64 bits = 0; 1252 int type; 1253 1254 list_for_each_entry(term, &head_config->terms, list) { 1255 switch (term->type_term) { 1256 case PARSE_EVENTS__TERM_TYPE_USER: 1257 type = perf_pmu__format_type(pmu, term->config); 1258 if (type != PERF_PMU_FORMAT_VALUE_CONFIG) 1259 continue; 1260 bits |= perf_pmu__format_bits(pmu, term->config); 1261 break; 1262 case PARSE_EVENTS__TERM_TYPE_CONFIG: 1263 bits = ~(u64)0; 1264 break; 1265 case PARSE_EVENTS__TERM_TYPE_CONFIG1: 1266 case PARSE_EVENTS__TERM_TYPE_CONFIG2: 1267 case PARSE_EVENTS__TERM_TYPE_CONFIG3: 1268 case PARSE_EVENTS__TERM_TYPE_NAME: 1269 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD: 1270 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ: 1271 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE: 1272 case PARSE_EVENTS__TERM_TYPE_TIME: 1273 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH: 1274 case PARSE_EVENTS__TERM_TYPE_STACKSIZE: 1275 case PARSE_EVENTS__TERM_TYPE_NOINHERIT: 1276 case PARSE_EVENTS__TERM_TYPE_INHERIT: 1277 case PARSE_EVENTS__TERM_TYPE_MAX_STACK: 1278 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS: 1279 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE: 1280 case PARSE_EVENTS__TERM_TYPE_OVERWRITE: 1281 case PARSE_EVENTS__TERM_TYPE_DRV_CFG: 1282 case PARSE_EVENTS__TERM_TYPE_PERCORE: 1283 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT: 1284 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE: 1285 case PARSE_EVENTS__TERM_TYPE_METRIC_ID: 1286 case PARSE_EVENTS__TERM_TYPE_RAW: 1287 case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE: 1288 case PARSE_EVENTS__TERM_TYPE_HARDWARE: 1289 default: 1290 break; 1291 } 1292 } 1293 1294 if (bits) 1295 ADD_CONFIG_TERM_VAL(CFG_CHG, cfg_chg, bits, false); 1296 1297 #undef ADD_CONFIG_TERM 1298 return 0; 1299 } 1300 1301 int parse_events_add_tracepoint(struct parse_events_state *parse_state, 1302 struct list_head *list, 1303 const char *sys, const char *event, 1304 struct parse_events_error *err, 1305 struct parse_events_terms *head_config, void *loc_) 1306 { 1307 YYLTYPE *loc = loc_; 1308 #ifdef HAVE_LIBTRACEEVENT 1309 if (head_config) { 1310 struct perf_event_attr attr; 1311 1312 if (config_attr(&attr, head_config, err, 1313 config_term_tracepoint)) 1314 return -EINVAL; 1315 } 1316 1317 if (strpbrk(sys, "*?")) 1318 return add_tracepoint_multi_sys(parse_state, list, sys, event, 1319 err, head_config, loc); 1320 else 1321 return add_tracepoint_event(parse_state, list, sys, event, 1322 err, head_config, loc); 1323 #else 1324 (void)parse_state; 1325 (void)list; 1326 (void)sys; 1327 (void)event; 1328 (void)head_config; 1329 parse_events_error__handle(err, loc->first_column, strdup("unsupported tracepoint"), 1330 strdup("libtraceevent is necessary for tracepoint support")); 1331 return -1; 1332 #endif 1333 } 1334 1335 static int __parse_events_add_numeric(struct parse_events_state *parse_state, 1336 struct list_head *list, 1337 struct perf_pmu *pmu, u32 type, u32 extended_type, 1338 u64 config, const struct parse_events_terms *head_config) 1339 { 1340 struct perf_event_attr attr; 1341 LIST_HEAD(config_terms); 1342 const char *name, *metric_id; 1343 int ret; 1344 1345 memset(&attr, 0, sizeof(attr)); 1346 attr.type = type; 1347 attr.config = config; 1348 if (extended_type && (type == PERF_TYPE_HARDWARE || type == PERF_TYPE_HW_CACHE)) { 1349 assert(perf_pmus__supports_extended_type()); 1350 attr.config |= (u64)extended_type << PERF_PMU_TYPE_SHIFT; 1351 } 1352 1353 if (head_config) { 1354 if (config_attr(&attr, head_config, parse_state->error, 1355 config_term_common)) 1356 return -EINVAL; 1357 1358 if (get_config_terms(head_config, &config_terms)) 1359 return -ENOMEM; 1360 } 1361 1362 name = get_config_name(head_config); 1363 metric_id = get_config_metric_id(head_config); 1364 ret = __add_event(list, &parse_state->idx, &attr, /*init_attr*/true, name, 1365 metric_id, pmu, &config_terms, /*auto_merge_stats=*/false, 1366 /*cpu_list=*/NULL) ? 0 : -ENOMEM; 1367 free_config_terms(&config_terms); 1368 return ret; 1369 } 1370 1371 int parse_events_add_numeric(struct parse_events_state *parse_state, 1372 struct list_head *list, 1373 u32 type, u64 config, 1374 const struct parse_events_terms *head_config, 1375 bool wildcard) 1376 { 1377 struct perf_pmu *pmu = NULL; 1378 bool found_supported = false; 1379 1380 /* Wildcards on numeric values are only supported by core PMUs. */ 1381 if (wildcard && perf_pmus__supports_extended_type()) { 1382 while ((pmu = perf_pmus__scan_core(pmu)) != NULL) { 1383 int ret; 1384 1385 found_supported = true; 1386 if (parse_events__filter_pmu(parse_state, pmu)) 1387 continue; 1388 1389 ret = __parse_events_add_numeric(parse_state, list, pmu, 1390 type, pmu->type, 1391 config, head_config); 1392 if (ret) 1393 return ret; 1394 } 1395 if (found_supported) 1396 return 0; 1397 } 1398 return __parse_events_add_numeric(parse_state, list, perf_pmus__find_by_type(type), 1399 type, /*extended_type=*/0, config, head_config); 1400 } 1401 1402 int parse_events_add_tool(struct parse_events_state *parse_state, 1403 struct list_head *list, 1404 int tool_event) 1405 { 1406 return add_event_tool(list, &parse_state->idx, tool_event); 1407 } 1408 1409 static bool config_term_percore(struct list_head *config_terms) 1410 { 1411 struct evsel_config_term *term; 1412 1413 list_for_each_entry(term, config_terms, list) { 1414 if (term->type == EVSEL__CONFIG_TERM_PERCORE) 1415 return term->val.percore; 1416 } 1417 1418 return false; 1419 } 1420 1421 static int parse_events_add_pmu(struct parse_events_state *parse_state, 1422 struct list_head *list, struct perf_pmu *pmu, 1423 const struct parse_events_terms *const_parsed_terms, 1424 bool auto_merge_stats) 1425 { 1426 struct perf_event_attr attr; 1427 struct perf_pmu_info info; 1428 struct evsel *evsel; 1429 struct parse_events_error *err = parse_state->error; 1430 LIST_HEAD(config_terms); 1431 struct parse_events_terms parsed_terms; 1432 bool alias_rewrote_terms = false; 1433 1434 if (verbose > 1) { 1435 struct strbuf sb; 1436 1437 strbuf_init(&sb, /*hint=*/ 0); 1438 if (pmu->selectable && const_parsed_terms && 1439 list_empty(&const_parsed_terms->terms)) { 1440 strbuf_addf(&sb, "%s//", pmu->name); 1441 } else { 1442 strbuf_addf(&sb, "%s/", pmu->name); 1443 parse_events_terms__to_strbuf(const_parsed_terms, &sb); 1444 strbuf_addch(&sb, '/'); 1445 } 1446 fprintf(stderr, "Attempt to add: %s\n", sb.buf); 1447 strbuf_release(&sb); 1448 } 1449 1450 memset(&attr, 0, sizeof(attr)); 1451 if (pmu->perf_event_attr_init_default) 1452 pmu->perf_event_attr_init_default(pmu, &attr); 1453 1454 attr.type = pmu->type; 1455 1456 if (!const_parsed_terms || list_empty(&const_parsed_terms->terms)) { 1457 evsel = __add_event(list, &parse_state->idx, &attr, 1458 /*init_attr=*/true, /*name=*/NULL, 1459 /*metric_id=*/NULL, pmu, 1460 /*config_terms=*/NULL, auto_merge_stats, 1461 /*cpu_list=*/NULL); 1462 return evsel ? 0 : -ENOMEM; 1463 } 1464 1465 parse_events_terms__init(&parsed_terms); 1466 if (const_parsed_terms) { 1467 int ret = parse_events_terms__copy(const_parsed_terms, &parsed_terms); 1468 1469 if (ret) 1470 return ret; 1471 } 1472 fix_raw(&parsed_terms, pmu); 1473 1474 /* Configure attr/terms with a known PMU, this will set hardcoded terms. */ 1475 if (config_attr(&attr, &parsed_terms, parse_state->error, config_term_pmu)) { 1476 parse_events_terms__exit(&parsed_terms); 1477 return -EINVAL; 1478 } 1479 1480 /* Look for event names in the terms and rewrite into format based terms. */ 1481 if (!parse_state->fake_pmu && perf_pmu__check_alias(pmu, &parsed_terms, 1482 &info, &alias_rewrote_terms, err)) { 1483 parse_events_terms__exit(&parsed_terms); 1484 return -EINVAL; 1485 } 1486 1487 if (verbose > 1) { 1488 struct strbuf sb; 1489 1490 strbuf_init(&sb, /*hint=*/ 0); 1491 parse_events_terms__to_strbuf(&parsed_terms, &sb); 1492 fprintf(stderr, "..after resolving event: %s/%s/\n", pmu->name, sb.buf); 1493 strbuf_release(&sb); 1494 } 1495 1496 /* Configure attr/terms again if an alias was expanded. */ 1497 if (alias_rewrote_terms && 1498 config_attr(&attr, &parsed_terms, parse_state->error, config_term_pmu)) { 1499 parse_events_terms__exit(&parsed_terms); 1500 return -EINVAL; 1501 } 1502 1503 if (get_config_terms(&parsed_terms, &config_terms)) { 1504 parse_events_terms__exit(&parsed_terms); 1505 return -ENOMEM; 1506 } 1507 1508 /* 1509 * When using default config, record which bits of attr->config were 1510 * changed by the user. 1511 */ 1512 if (pmu->perf_event_attr_init_default && 1513 get_config_chgs(pmu, &parsed_terms, &config_terms)) { 1514 parse_events_terms__exit(&parsed_terms); 1515 return -ENOMEM; 1516 } 1517 1518 if (!parse_state->fake_pmu && 1519 perf_pmu__config(pmu, &attr, &parsed_terms, parse_state->error)) { 1520 free_config_terms(&config_terms); 1521 parse_events_terms__exit(&parsed_terms); 1522 return -EINVAL; 1523 } 1524 1525 evsel = __add_event(list, &parse_state->idx, &attr, /*init_attr=*/true, 1526 get_config_name(&parsed_terms), 1527 get_config_metric_id(&parsed_terms), pmu, 1528 &config_terms, auto_merge_stats, /*cpu_list=*/NULL); 1529 if (!evsel) { 1530 parse_events_terms__exit(&parsed_terms); 1531 return -ENOMEM; 1532 } 1533 1534 if (evsel->name) 1535 evsel->use_config_name = true; 1536 1537 evsel->percore = config_term_percore(&evsel->config_terms); 1538 1539 if (parse_state->fake_pmu) { 1540 parse_events_terms__exit(&parsed_terms); 1541 return 0; 1542 } 1543 1544 parse_events_terms__exit(&parsed_terms); 1545 free((char *)evsel->unit); 1546 evsel->unit = strdup(info.unit); 1547 evsel->scale = info.scale; 1548 evsel->per_pkg = info.per_pkg; 1549 evsel->snapshot = info.snapshot; 1550 return 0; 1551 } 1552 1553 int parse_events_multi_pmu_add(struct parse_events_state *parse_state, 1554 const char *event_name, 1555 const struct parse_events_terms *const_parsed_terms, 1556 struct list_head **listp, void *loc_) 1557 { 1558 struct parse_events_term *term; 1559 struct list_head *list = NULL; 1560 struct perf_pmu *pmu = NULL; 1561 YYLTYPE *loc = loc_; 1562 int ok = 0; 1563 const char *config; 1564 struct parse_events_terms parsed_terms; 1565 1566 *listp = NULL; 1567 1568 parse_events_terms__init(&parsed_terms); 1569 if (const_parsed_terms) { 1570 int ret = parse_events_terms__copy(const_parsed_terms, &parsed_terms); 1571 1572 if (ret) 1573 return ret; 1574 } 1575 1576 config = strdup(event_name); 1577 if (!config) 1578 goto out_err; 1579 1580 if (parse_events_term__num(&term, 1581 PARSE_EVENTS__TERM_TYPE_USER, 1582 config, /*num=*/1, /*novalue=*/true, 1583 loc, /*loc_val=*/NULL) < 0) { 1584 zfree(&config); 1585 goto out_err; 1586 } 1587 list_add_tail(&term->list, &parsed_terms.terms); 1588 1589 /* Add it for all PMUs that support the alias */ 1590 list = malloc(sizeof(struct list_head)); 1591 if (!list) 1592 goto out_err; 1593 1594 INIT_LIST_HEAD(list); 1595 1596 while ((pmu = perf_pmus__scan(pmu)) != NULL) { 1597 bool auto_merge_stats; 1598 1599 if (parse_events__filter_pmu(parse_state, pmu)) 1600 continue; 1601 1602 if (!perf_pmu__have_event(pmu, event_name)) 1603 continue; 1604 1605 auto_merge_stats = perf_pmu__auto_merge_stats(pmu); 1606 if (!parse_events_add_pmu(parse_state, list, pmu, 1607 &parsed_terms, auto_merge_stats)) { 1608 struct strbuf sb; 1609 1610 strbuf_init(&sb, /*hint=*/ 0); 1611 parse_events_terms__to_strbuf(&parsed_terms, &sb); 1612 pr_debug("%s -> %s/%s/\n", event_name, pmu->name, sb.buf); 1613 strbuf_release(&sb); 1614 ok++; 1615 } 1616 } 1617 1618 if (parse_state->fake_pmu) { 1619 if (!parse_events_add_pmu(parse_state, list, parse_state->fake_pmu, &parsed_terms, 1620 /*auto_merge_stats=*/true)) { 1621 struct strbuf sb; 1622 1623 strbuf_init(&sb, /*hint=*/ 0); 1624 parse_events_terms__to_strbuf(&parsed_terms, &sb); 1625 pr_debug("%s -> %s/%s/\n", event_name, "fake_pmu", sb.buf); 1626 strbuf_release(&sb); 1627 ok++; 1628 } 1629 } 1630 1631 out_err: 1632 parse_events_terms__exit(&parsed_terms); 1633 if (ok) 1634 *listp = list; 1635 else 1636 free(list); 1637 1638 return ok ? 0 : -1; 1639 } 1640 1641 int parse_events_multi_pmu_add_or_add_pmu(struct parse_events_state *parse_state, 1642 const char *event_or_pmu, 1643 const struct parse_events_terms *const_parsed_terms, 1644 struct list_head **listp, 1645 void *loc_) 1646 { 1647 YYLTYPE *loc = loc_; 1648 struct perf_pmu *pmu; 1649 int ok = 0; 1650 char *help; 1651 1652 *listp = malloc(sizeof(**listp)); 1653 if (!*listp) 1654 return -ENOMEM; 1655 1656 INIT_LIST_HEAD(*listp); 1657 1658 /* Attempt to add to list assuming event_or_pmu is a PMU name. */ 1659 pmu = parse_state->fake_pmu ?: perf_pmus__find(event_or_pmu); 1660 if (pmu && !parse_events_add_pmu(parse_state, *listp, pmu, const_parsed_terms, 1661 /*auto_merge_stats=*/false)) 1662 return 0; 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(pmu)) != NULL) { 1667 if (!parse_events__filter_pmu(parse_state, pmu) && 1668 perf_pmu__match(pmu, event_or_pmu)) { 1669 bool auto_merge_stats = perf_pmu__auto_merge_stats(pmu); 1670 1671 if (!parse_events_add_pmu(parse_state, *listp, pmu, 1672 const_parsed_terms, 1673 auto_merge_stats)) { 1674 ok++; 1675 parse_state->wild_card_pmus = true; 1676 } 1677 } 1678 } 1679 if (ok) 1680 return 0; 1681 1682 /* Failure to add, assume event_or_pmu is an event name. */ 1683 zfree(listp); 1684 if (!parse_events_multi_pmu_add(parse_state, event_or_pmu, const_parsed_terms, listp, loc)) 1685 return 0; 1686 1687 if (asprintf(&help, "Unable to find PMU or event on a PMU of '%s'", event_or_pmu) < 0) 1688 help = NULL; 1689 parse_events_error__handle(parse_state->error, loc->first_column, 1690 strdup("Bad event or PMU"), 1691 help); 1692 zfree(listp); 1693 return -EINVAL; 1694 } 1695 1696 void parse_events__set_leader(char *name, struct list_head *list) 1697 { 1698 struct evsel *leader; 1699 1700 if (list_empty(list)) { 1701 WARN_ONCE(true, "WARNING: failed to set leader: empty list"); 1702 return; 1703 } 1704 1705 leader = list_first_entry(list, struct evsel, core.node); 1706 __perf_evlist__set_leader(list, &leader->core); 1707 zfree(&leader->group_name); 1708 leader->group_name = name; 1709 } 1710 1711 static int parse_events__modifier_list(struct parse_events_state *parse_state, 1712 YYLTYPE *loc, 1713 struct list_head *list, 1714 struct parse_events_modifier mod, 1715 bool group) 1716 { 1717 struct evsel *evsel; 1718 1719 if (!group && mod.weak) { 1720 parse_events_error__handle(parse_state->error, loc->first_column, 1721 strdup("Weak modifier is for use with groups"), NULL); 1722 return -EINVAL; 1723 } 1724 1725 __evlist__for_each_entry(list, evsel) { 1726 /* Translate modifiers into the equivalent evsel excludes. */ 1727 int eu = group ? evsel->core.attr.exclude_user : 0; 1728 int ek = group ? evsel->core.attr.exclude_kernel : 0; 1729 int eh = group ? evsel->core.attr.exclude_hv : 0; 1730 int eH = group ? evsel->core.attr.exclude_host : 0; 1731 int eG = group ? evsel->core.attr.exclude_guest : 0; 1732 int exclude = eu | ek | eh; 1733 int exclude_GH = group ? evsel->exclude_GH : 0; 1734 1735 if (mod.precise) { 1736 /* use of precise requires exclude_guest */ 1737 eG = 1; 1738 } 1739 if (mod.user) { 1740 if (!exclude) 1741 exclude = eu = ek = eh = 1; 1742 if (!exclude_GH && !perf_guest) 1743 eG = 1; 1744 eu = 0; 1745 } 1746 if (mod.kernel) { 1747 if (!exclude) 1748 exclude = eu = ek = eh = 1; 1749 ek = 0; 1750 } 1751 if (mod.hypervisor) { 1752 if (!exclude) 1753 exclude = eu = ek = eh = 1; 1754 eh = 0; 1755 } 1756 if (mod.guest) { 1757 if (!exclude_GH) 1758 exclude_GH = eG = eH = 1; 1759 eG = 0; 1760 } 1761 if (mod.host) { 1762 if (!exclude_GH) 1763 exclude_GH = eG = eH = 1; 1764 eH = 0; 1765 } 1766 evsel->core.attr.exclude_user = eu; 1767 evsel->core.attr.exclude_kernel = ek; 1768 evsel->core.attr.exclude_hv = eh; 1769 evsel->core.attr.exclude_host = eH; 1770 evsel->core.attr.exclude_guest = eG; 1771 evsel->exclude_GH = exclude_GH; 1772 1773 /* Simple modifiers copied to the evsel. */ 1774 if (mod.precise) { 1775 u8 precise = evsel->core.attr.precise_ip + mod.precise; 1776 /* 1777 * precise ip: 1778 * 1779 * 0 - SAMPLE_IP can have arbitrary skid 1780 * 1 - SAMPLE_IP must have constant skid 1781 * 2 - SAMPLE_IP requested to have 0 skid 1782 * 3 - SAMPLE_IP must have 0 skid 1783 * 1784 * See also PERF_RECORD_MISC_EXACT_IP 1785 */ 1786 if (precise > 3) { 1787 char *help; 1788 1789 if (asprintf(&help, 1790 "Maximum combined precise value is 3, adding precision to \"%s\"", 1791 evsel__name(evsel)) > 0) { 1792 parse_events_error__handle(parse_state->error, 1793 loc->first_column, 1794 help, NULL); 1795 } 1796 return -EINVAL; 1797 } 1798 evsel->core.attr.precise_ip = precise; 1799 } 1800 if (mod.precise_max) 1801 evsel->precise_max = 1; 1802 if (mod.non_idle) 1803 evsel->core.attr.exclude_idle = 1; 1804 if (mod.sample_read) 1805 evsel->sample_read = 1; 1806 if (mod.pinned && evsel__is_group_leader(evsel)) 1807 evsel->core.attr.pinned = 1; 1808 if (mod.exclusive && evsel__is_group_leader(evsel)) 1809 evsel->core.attr.exclusive = 1; 1810 if (mod.weak) 1811 evsel->weak_group = true; 1812 if (mod.bpf) 1813 evsel->bpf_counter = true; 1814 } 1815 return 0; 1816 } 1817 1818 int parse_events__modifier_group(struct parse_events_state *parse_state, void *loc, 1819 struct list_head *list, 1820 struct parse_events_modifier mod) 1821 { 1822 return parse_events__modifier_list(parse_state, loc, list, mod, /*group=*/true); 1823 } 1824 1825 int parse_events__modifier_event(struct parse_events_state *parse_state, void *loc, 1826 struct list_head *list, 1827 struct parse_events_modifier mod) 1828 { 1829 return parse_events__modifier_list(parse_state, loc, list, mod, /*group=*/false); 1830 } 1831 1832 int parse_events__set_default_name(struct list_head *list, char *name) 1833 { 1834 struct evsel *evsel; 1835 bool used_name = false; 1836 1837 __evlist__for_each_entry(list, evsel) { 1838 if (!evsel->name) { 1839 evsel->name = used_name ? strdup(name) : name; 1840 used_name = true; 1841 if (!evsel->name) 1842 return -ENOMEM; 1843 } 1844 } 1845 if (!used_name) 1846 free(name); 1847 return 0; 1848 } 1849 1850 static int parse_events__scanner(const char *str, 1851 FILE *input, 1852 struct parse_events_state *parse_state) 1853 { 1854 YY_BUFFER_STATE buffer; 1855 void *scanner; 1856 int ret; 1857 1858 ret = parse_events_lex_init_extra(parse_state, &scanner); 1859 if (ret) 1860 return ret; 1861 1862 if (str) 1863 buffer = parse_events__scan_string(str, scanner); 1864 else 1865 parse_events_set_in(input, scanner); 1866 1867 #ifdef PARSER_DEBUG 1868 parse_events_debug = 1; 1869 parse_events_set_debug(1, scanner); 1870 #endif 1871 ret = parse_events_parse(parse_state, scanner); 1872 1873 if (str) { 1874 parse_events__flush_buffer(buffer, scanner); 1875 parse_events__delete_buffer(buffer, scanner); 1876 } 1877 parse_events_lex_destroy(scanner); 1878 return ret; 1879 } 1880 1881 /* 1882 * parse event config string, return a list of event terms. 1883 */ 1884 int parse_events_terms(struct parse_events_terms *terms, const char *str, FILE *input) 1885 { 1886 struct parse_events_state parse_state = { 1887 .terms = NULL, 1888 .stoken = PE_START_TERMS, 1889 }; 1890 int ret; 1891 1892 ret = parse_events__scanner(str, input, &parse_state); 1893 if (!ret) 1894 list_splice(&parse_state.terms->terms, &terms->terms); 1895 1896 zfree(&parse_state.terms); 1897 return ret; 1898 } 1899 1900 static int evsel__compute_group_pmu_name(struct evsel *evsel, 1901 const struct list_head *head) 1902 { 1903 struct evsel *leader = evsel__leader(evsel); 1904 struct evsel *pos; 1905 const char *group_pmu_name; 1906 struct perf_pmu *pmu = evsel__find_pmu(evsel); 1907 1908 if (!pmu) { 1909 /* 1910 * For PERF_TYPE_HARDWARE and PERF_TYPE_HW_CACHE types the PMU 1911 * is a core PMU, but in heterogeneous systems this is 1912 * unknown. For now pick the first core PMU. 1913 */ 1914 pmu = perf_pmus__scan_core(NULL); 1915 } 1916 if (!pmu) { 1917 pr_debug("No PMU found for '%s'\n", evsel__name(evsel)); 1918 return -EINVAL; 1919 } 1920 group_pmu_name = pmu->name; 1921 /* 1922 * Software events may be in a group with other uncore PMU events. Use 1923 * the pmu_name of the first non-software event to avoid breaking the 1924 * software event out of the group. 1925 * 1926 * Aux event leaders, like intel_pt, expect a group with events from 1927 * other PMUs, so substitute the AUX event's PMU in this case. 1928 */ 1929 if (perf_pmu__is_software(pmu) || evsel__is_aux_event(leader)) { 1930 struct perf_pmu *leader_pmu = evsel__find_pmu(leader); 1931 1932 if (!leader_pmu) { 1933 /* As with determining pmu above. */ 1934 leader_pmu = perf_pmus__scan_core(NULL); 1935 } 1936 /* 1937 * Starting with the leader, find the first event with a named 1938 * non-software PMU. for_each_group_(member|evsel) isn't used as 1939 * the list isn't yet sorted putting evsel's in the same group 1940 * together. 1941 */ 1942 if (leader_pmu && !perf_pmu__is_software(leader_pmu)) { 1943 group_pmu_name = leader_pmu->name; 1944 } else if (leader->core.nr_members > 1) { 1945 list_for_each_entry(pos, head, core.node) { 1946 struct perf_pmu *pos_pmu; 1947 1948 if (pos == leader || evsel__leader(pos) != leader) 1949 continue; 1950 pos_pmu = evsel__find_pmu(pos); 1951 if (!pos_pmu) { 1952 /* As with determining pmu above. */ 1953 pos_pmu = perf_pmus__scan_core(NULL); 1954 } 1955 if (pos_pmu && !perf_pmu__is_software(pos_pmu)) { 1956 group_pmu_name = pos_pmu->name; 1957 break; 1958 } 1959 } 1960 } 1961 } 1962 /* Assign the actual name taking care that the fake PMU lacks a name. */ 1963 evsel->group_pmu_name = strdup(group_pmu_name ?: "fake"); 1964 return evsel->group_pmu_name ? 0 : -ENOMEM; 1965 } 1966 1967 __weak int arch_evlist__cmp(const struct evsel *lhs, const struct evsel *rhs) 1968 { 1969 /* Order by insertion index. */ 1970 return lhs->core.idx - rhs->core.idx; 1971 } 1972 1973 static int evlist__cmp(void *_fg_idx, const struct list_head *l, const struct list_head *r) 1974 { 1975 const struct perf_evsel *lhs_core = container_of(l, struct perf_evsel, node); 1976 const struct evsel *lhs = container_of(lhs_core, struct evsel, core); 1977 const struct perf_evsel *rhs_core = container_of(r, struct perf_evsel, node); 1978 const struct evsel *rhs = container_of(rhs_core, struct evsel, core); 1979 int *force_grouped_idx = _fg_idx; 1980 int lhs_sort_idx, rhs_sort_idx, ret; 1981 const char *lhs_pmu_name, *rhs_pmu_name; 1982 bool lhs_has_group, rhs_has_group; 1983 1984 /* 1985 * First sort by grouping/leader. Read the leader idx only if the evsel 1986 * is part of a group, by default ungrouped events will be sorted 1987 * relative to grouped events based on where the first ungrouped event 1988 * occurs. If both events don't have a group we want to fall-through to 1989 * the arch specific sorting, that can reorder and fix things like 1990 * Intel's topdown events. 1991 */ 1992 if (lhs_core->leader != lhs_core || lhs_core->nr_members > 1) { 1993 lhs_has_group = true; 1994 lhs_sort_idx = lhs_core->leader->idx; 1995 } else { 1996 lhs_has_group = false; 1997 lhs_sort_idx = *force_grouped_idx != -1 && arch_evsel__must_be_in_group(lhs) 1998 ? *force_grouped_idx 1999 : lhs_core->idx; 2000 } 2001 if (rhs_core->leader != rhs_core || rhs_core->nr_members > 1) { 2002 rhs_has_group = true; 2003 rhs_sort_idx = rhs_core->leader->idx; 2004 } else { 2005 rhs_has_group = false; 2006 rhs_sort_idx = *force_grouped_idx != -1 && arch_evsel__must_be_in_group(rhs) 2007 ? *force_grouped_idx 2008 : rhs_core->idx; 2009 } 2010 2011 if (lhs_sort_idx != rhs_sort_idx) 2012 return lhs_sort_idx - rhs_sort_idx; 2013 2014 /* Group by PMU if there is a group. Groups can't span PMUs. */ 2015 if (lhs_has_group && rhs_has_group) { 2016 lhs_pmu_name = lhs->group_pmu_name; 2017 rhs_pmu_name = rhs->group_pmu_name; 2018 ret = strcmp(lhs_pmu_name, rhs_pmu_name); 2019 if (ret) 2020 return ret; 2021 } 2022 2023 /* Architecture specific sorting. */ 2024 return arch_evlist__cmp(lhs, rhs); 2025 } 2026 2027 static int parse_events__sort_events_and_fix_groups(struct list_head *list) 2028 { 2029 int idx = 0, force_grouped_idx = -1; 2030 struct evsel *pos, *cur_leader = NULL; 2031 struct perf_evsel *cur_leaders_grp = NULL; 2032 bool idx_changed = false, cur_leader_force_grouped = false; 2033 int orig_num_leaders = 0, num_leaders = 0; 2034 int ret; 2035 2036 /* 2037 * Compute index to insert ungrouped events at. Place them where the 2038 * first ungrouped event appears. 2039 */ 2040 list_for_each_entry(pos, list, core.node) { 2041 const struct evsel *pos_leader = evsel__leader(pos); 2042 2043 ret = evsel__compute_group_pmu_name(pos, list); 2044 if (ret) 2045 return ret; 2046 2047 if (pos == pos_leader) 2048 orig_num_leaders++; 2049 2050 /* 2051 * Ensure indexes are sequential, in particular for multiple 2052 * event lists being merged. The indexes are used to detect when 2053 * the user order is modified. 2054 */ 2055 pos->core.idx = idx++; 2056 2057 /* Remember an index to sort all forced grouped events together to. */ 2058 if (force_grouped_idx == -1 && pos == pos_leader && pos->core.nr_members < 2 && 2059 arch_evsel__must_be_in_group(pos)) 2060 force_grouped_idx = pos->core.idx; 2061 } 2062 2063 /* Sort events. */ 2064 list_sort(&force_grouped_idx, list, evlist__cmp); 2065 2066 /* 2067 * Recompute groups, splitting for PMUs and adding groups for events 2068 * that require them. 2069 */ 2070 idx = 0; 2071 list_for_each_entry(pos, list, core.node) { 2072 const struct evsel *pos_leader = evsel__leader(pos); 2073 const char *pos_pmu_name = pos->group_pmu_name; 2074 const char *cur_leader_pmu_name; 2075 bool pos_force_grouped = force_grouped_idx != -1 && 2076 arch_evsel__must_be_in_group(pos); 2077 2078 /* Reset index and nr_members. */ 2079 if (pos->core.idx != idx) 2080 idx_changed = true; 2081 pos->core.idx = idx++; 2082 pos->core.nr_members = 0; 2083 2084 /* 2085 * Set the group leader respecting the given groupings and that 2086 * groups can't span PMUs. 2087 */ 2088 if (!cur_leader) 2089 cur_leader = pos; 2090 2091 cur_leader_pmu_name = cur_leader->group_pmu_name; 2092 if ((cur_leaders_grp != pos->core.leader && 2093 (!pos_force_grouped || !cur_leader_force_grouped)) || 2094 strcmp(cur_leader_pmu_name, pos_pmu_name)) { 2095 /* Event is for a different group/PMU than last. */ 2096 cur_leader = pos; 2097 /* 2098 * Remember the leader's group before it is overwritten, 2099 * so that later events match as being in the same 2100 * group. 2101 */ 2102 cur_leaders_grp = pos->core.leader; 2103 /* 2104 * Avoid forcing events into groups with events that 2105 * don't need to be in the group. 2106 */ 2107 cur_leader_force_grouped = pos_force_grouped; 2108 } 2109 if (pos_leader != cur_leader) { 2110 /* The leader changed so update it. */ 2111 evsel__set_leader(pos, cur_leader); 2112 } 2113 } 2114 list_for_each_entry(pos, list, core.node) { 2115 struct evsel *pos_leader = evsel__leader(pos); 2116 2117 if (pos == pos_leader) 2118 num_leaders++; 2119 pos_leader->core.nr_members++; 2120 } 2121 return (idx_changed || num_leaders != orig_num_leaders) ? 1 : 0; 2122 } 2123 2124 int __parse_events(struct evlist *evlist, const char *str, const char *pmu_filter, 2125 struct parse_events_error *err, struct perf_pmu *fake_pmu, 2126 bool warn_if_reordered, bool fake_tp) 2127 { 2128 struct parse_events_state parse_state = { 2129 .list = LIST_HEAD_INIT(parse_state.list), 2130 .idx = evlist->core.nr_entries, 2131 .error = err, 2132 .stoken = PE_START_EVENTS, 2133 .fake_pmu = fake_pmu, 2134 .fake_tp = fake_tp, 2135 .pmu_filter = pmu_filter, 2136 .match_legacy_cache_terms = true, 2137 }; 2138 int ret, ret2; 2139 2140 ret = parse_events__scanner(str, /*input=*/ NULL, &parse_state); 2141 2142 if (!ret && list_empty(&parse_state.list)) { 2143 WARN_ONCE(true, "WARNING: event parser found nothing\n"); 2144 return -1; 2145 } 2146 2147 ret2 = parse_events__sort_events_and_fix_groups(&parse_state.list); 2148 if (ret2 < 0) 2149 return ret; 2150 2151 if (ret2 && warn_if_reordered && !parse_state.wild_card_pmus) 2152 pr_warning("WARNING: events were regrouped to match PMUs\n"); 2153 2154 /* 2155 * Add list to the evlist even with errors to allow callers to clean up. 2156 */ 2157 evlist__splice_list_tail(evlist, &parse_state.list); 2158 2159 if (!ret) { 2160 struct evsel *last; 2161 2162 last = evlist__last(evlist); 2163 last->cmdline_group_boundary = true; 2164 2165 return 0; 2166 } 2167 2168 /* 2169 * There are 2 users - builtin-record and builtin-test objects. 2170 * Both call evlist__delete in case of error, so we dont 2171 * need to bother. 2172 */ 2173 return ret; 2174 } 2175 2176 int parse_event(struct evlist *evlist, const char *str) 2177 { 2178 struct parse_events_error err; 2179 int ret; 2180 2181 parse_events_error__init(&err); 2182 ret = parse_events(evlist, str, &err); 2183 parse_events_error__exit(&err); 2184 return ret; 2185 } 2186 2187 struct parse_events_error_entry { 2188 /** @list: The list the error is part of. */ 2189 struct list_head list; 2190 /** @idx: index in the parsed string */ 2191 int idx; 2192 /** @str: string to display at the index */ 2193 char *str; 2194 /** @help: optional help string */ 2195 char *help; 2196 }; 2197 2198 void parse_events_error__init(struct parse_events_error *err) 2199 { 2200 INIT_LIST_HEAD(&err->list); 2201 } 2202 2203 void parse_events_error__exit(struct parse_events_error *err) 2204 { 2205 struct parse_events_error_entry *pos, *tmp; 2206 2207 list_for_each_entry_safe(pos, tmp, &err->list, list) { 2208 zfree(&pos->str); 2209 zfree(&pos->help); 2210 list_del_init(&pos->list); 2211 free(pos); 2212 } 2213 } 2214 2215 void parse_events_error__handle(struct parse_events_error *err, int idx, 2216 char *str, char *help) 2217 { 2218 struct parse_events_error_entry *entry; 2219 2220 if (WARN(!str || !err, "WARNING: failed to provide error string or struct\n")) 2221 goto out_free; 2222 2223 entry = zalloc(sizeof(*entry)); 2224 if (!entry) { 2225 pr_err("Failed to allocate memory for event parsing error: %s (%s)\n", 2226 str, help ?: "<no help>"); 2227 goto out_free; 2228 } 2229 entry->idx = idx; 2230 entry->str = str; 2231 entry->help = help; 2232 list_add(&entry->list, &err->list); 2233 return; 2234 out_free: 2235 free(str); 2236 free(help); 2237 } 2238 2239 #define MAX_WIDTH 1000 2240 static int get_term_width(void) 2241 { 2242 struct winsize ws; 2243 2244 get_term_dimensions(&ws); 2245 return ws.ws_col > MAX_WIDTH ? MAX_WIDTH : ws.ws_col; 2246 } 2247 2248 static void __parse_events_error__print(int err_idx, const char *err_str, 2249 const char *err_help, const char *event) 2250 { 2251 const char *str = "invalid or unsupported event: "; 2252 char _buf[MAX_WIDTH]; 2253 char *buf = (char *) event; 2254 int idx = 0; 2255 if (err_str) { 2256 /* -2 for extra '' in the final fprintf */ 2257 int width = get_term_width() - 2; 2258 int len_event = strlen(event); 2259 int len_str, max_len, cut = 0; 2260 2261 /* 2262 * Maximum error index indent, we will cut 2263 * the event string if it's bigger. 2264 */ 2265 int max_err_idx = 13; 2266 2267 /* 2268 * Let's be specific with the message when 2269 * we have the precise error. 2270 */ 2271 str = "event syntax error: "; 2272 len_str = strlen(str); 2273 max_len = width - len_str; 2274 2275 buf = _buf; 2276 2277 /* We're cutting from the beginning. */ 2278 if (err_idx > max_err_idx) 2279 cut = err_idx - max_err_idx; 2280 2281 strncpy(buf, event + cut, max_len); 2282 2283 /* Mark cut parts with '..' on both sides. */ 2284 if (cut) 2285 buf[0] = buf[1] = '.'; 2286 2287 if ((len_event - cut) > max_len) { 2288 buf[max_len - 1] = buf[max_len - 2] = '.'; 2289 buf[max_len] = 0; 2290 } 2291 2292 idx = len_str + err_idx - cut; 2293 } 2294 2295 fprintf(stderr, "%s'%s'\n", str, buf); 2296 if (idx) { 2297 fprintf(stderr, "%*s\\___ %s\n", idx + 1, "", err_str); 2298 if (err_help) 2299 fprintf(stderr, "\n%s\n", err_help); 2300 } 2301 } 2302 2303 void parse_events_error__print(const struct parse_events_error *err, 2304 const char *event) 2305 { 2306 struct parse_events_error_entry *pos; 2307 bool first = true; 2308 2309 list_for_each_entry(pos, &err->list, list) { 2310 if (!first) 2311 fputs("\n", stderr); 2312 __parse_events_error__print(pos->idx, pos->str, pos->help, event); 2313 first = false; 2314 } 2315 } 2316 2317 /* 2318 * In the list of errors err, do any of the error strings (str) contain the 2319 * given needle string? 2320 */ 2321 bool parse_events_error__contains(const struct parse_events_error *err, 2322 const char *needle) 2323 { 2324 struct parse_events_error_entry *pos; 2325 2326 list_for_each_entry(pos, &err->list, list) { 2327 if (strstr(pos->str, needle) != NULL) 2328 return true; 2329 } 2330 return false; 2331 } 2332 2333 #undef MAX_WIDTH 2334 2335 int parse_events_option(const struct option *opt, const char *str, 2336 int unset __maybe_unused) 2337 { 2338 struct parse_events_option_args *args = opt->value; 2339 struct parse_events_error err; 2340 int ret; 2341 2342 parse_events_error__init(&err); 2343 ret = __parse_events(*args->evlistp, str, args->pmu_filter, &err, 2344 /*fake_pmu=*/NULL, /*warn_if_reordered=*/true, 2345 /*fake_tp=*/false); 2346 2347 if (ret) { 2348 parse_events_error__print(&err, str); 2349 fprintf(stderr, "Run 'perf list' for a list of valid events\n"); 2350 } 2351 parse_events_error__exit(&err); 2352 2353 return ret; 2354 } 2355 2356 int parse_events_option_new_evlist(const struct option *opt, const char *str, int unset) 2357 { 2358 struct parse_events_option_args *args = opt->value; 2359 int ret; 2360 2361 if (*args->evlistp == NULL) { 2362 *args->evlistp = evlist__new(); 2363 2364 if (*args->evlistp == NULL) { 2365 fprintf(stderr, "Not enough memory to create evlist\n"); 2366 return -1; 2367 } 2368 } 2369 ret = parse_events_option(opt, str, unset); 2370 if (ret) { 2371 evlist__delete(*args->evlistp); 2372 *args->evlistp = NULL; 2373 } 2374 2375 return ret; 2376 } 2377 2378 static int 2379 foreach_evsel_in_last_glob(struct evlist *evlist, 2380 int (*func)(struct evsel *evsel, 2381 const void *arg), 2382 const void *arg) 2383 { 2384 struct evsel *last = NULL; 2385 int err; 2386 2387 /* 2388 * Don't return when list_empty, give func a chance to report 2389 * error when it found last == NULL. 2390 * 2391 * So no need to WARN here, let *func do this. 2392 */ 2393 if (evlist->core.nr_entries > 0) 2394 last = evlist__last(evlist); 2395 2396 do { 2397 err = (*func)(last, arg); 2398 if (err) 2399 return -1; 2400 if (!last) 2401 return 0; 2402 2403 if (last->core.node.prev == &evlist->core.entries) 2404 return 0; 2405 last = list_entry(last->core.node.prev, struct evsel, core.node); 2406 } while (!last->cmdline_group_boundary); 2407 2408 return 0; 2409 } 2410 2411 static int set_filter(struct evsel *evsel, const void *arg) 2412 { 2413 const char *str = arg; 2414 bool found = false; 2415 int nr_addr_filters = 0; 2416 struct perf_pmu *pmu = NULL; 2417 2418 if (evsel == NULL) { 2419 fprintf(stderr, 2420 "--filter option should follow a -e tracepoint or HW tracer option\n"); 2421 return -1; 2422 } 2423 2424 if (evsel->core.attr.type == PERF_TYPE_TRACEPOINT) { 2425 if (evsel__append_tp_filter(evsel, str) < 0) { 2426 fprintf(stderr, 2427 "not enough memory to hold filter string\n"); 2428 return -1; 2429 } 2430 2431 return 0; 2432 } 2433 2434 while ((pmu = perf_pmus__scan(pmu)) != NULL) 2435 if (pmu->type == evsel->core.attr.type) { 2436 found = true; 2437 break; 2438 } 2439 2440 if (found) 2441 perf_pmu__scan_file(pmu, "nr_addr_filters", 2442 "%d", &nr_addr_filters); 2443 2444 if (!nr_addr_filters) 2445 return perf_bpf_filter__parse(&evsel->bpf_filters, str); 2446 2447 if (evsel__append_addr_filter(evsel, str) < 0) { 2448 fprintf(stderr, 2449 "not enough memory to hold filter string\n"); 2450 return -1; 2451 } 2452 2453 return 0; 2454 } 2455 2456 int parse_filter(const struct option *opt, const char *str, 2457 int unset __maybe_unused) 2458 { 2459 struct evlist *evlist = *(struct evlist **)opt->value; 2460 2461 return foreach_evsel_in_last_glob(evlist, set_filter, 2462 (const void *)str); 2463 } 2464 2465 static int add_exclude_perf_filter(struct evsel *evsel, 2466 const void *arg __maybe_unused) 2467 { 2468 char new_filter[64]; 2469 2470 if (evsel == NULL || evsel->core.attr.type != PERF_TYPE_TRACEPOINT) { 2471 fprintf(stderr, 2472 "--exclude-perf option should follow a -e tracepoint option\n"); 2473 return -1; 2474 } 2475 2476 snprintf(new_filter, sizeof(new_filter), "common_pid != %d", getpid()); 2477 2478 if (evsel__append_tp_filter(evsel, new_filter) < 0) { 2479 fprintf(stderr, 2480 "not enough memory to hold filter string\n"); 2481 return -1; 2482 } 2483 2484 return 0; 2485 } 2486 2487 int exclude_perf(const struct option *opt, 2488 const char *arg __maybe_unused, 2489 int unset __maybe_unused) 2490 { 2491 struct evlist *evlist = *(struct evlist **)opt->value; 2492 2493 return foreach_evsel_in_last_glob(evlist, add_exclude_perf_filter, 2494 NULL); 2495 } 2496 2497 int parse_events__is_hardcoded_term(struct parse_events_term *term) 2498 { 2499 return term->type_term != PARSE_EVENTS__TERM_TYPE_USER; 2500 } 2501 2502 static int new_term(struct parse_events_term **_term, 2503 struct parse_events_term *temp, 2504 char *str, u64 num) 2505 { 2506 struct parse_events_term *term; 2507 2508 term = malloc(sizeof(*term)); 2509 if (!term) 2510 return -ENOMEM; 2511 2512 *term = *temp; 2513 INIT_LIST_HEAD(&term->list); 2514 term->weak = false; 2515 2516 switch (term->type_val) { 2517 case PARSE_EVENTS__TERM_TYPE_NUM: 2518 term->val.num = num; 2519 break; 2520 case PARSE_EVENTS__TERM_TYPE_STR: 2521 term->val.str = str; 2522 break; 2523 default: 2524 free(term); 2525 return -EINVAL; 2526 } 2527 2528 *_term = term; 2529 return 0; 2530 } 2531 2532 int parse_events_term__num(struct parse_events_term **term, 2533 enum parse_events__term_type type_term, 2534 const char *config, u64 num, 2535 bool no_value, 2536 void *loc_term_, void *loc_val_) 2537 { 2538 YYLTYPE *loc_term = loc_term_; 2539 YYLTYPE *loc_val = loc_val_; 2540 2541 struct parse_events_term temp = { 2542 .type_val = PARSE_EVENTS__TERM_TYPE_NUM, 2543 .type_term = type_term, 2544 .config = config ? : strdup(config_term_name(type_term)), 2545 .no_value = no_value, 2546 .err_term = loc_term ? loc_term->first_column : 0, 2547 .err_val = loc_val ? loc_val->first_column : 0, 2548 }; 2549 2550 return new_term(term, &temp, /*str=*/NULL, num); 2551 } 2552 2553 int parse_events_term__str(struct parse_events_term **term, 2554 enum parse_events__term_type type_term, 2555 char *config, char *str, 2556 void *loc_term_, void *loc_val_) 2557 { 2558 YYLTYPE *loc_term = loc_term_; 2559 YYLTYPE *loc_val = loc_val_; 2560 2561 struct parse_events_term temp = { 2562 .type_val = PARSE_EVENTS__TERM_TYPE_STR, 2563 .type_term = type_term, 2564 .config = config, 2565 .err_term = loc_term ? loc_term->first_column : 0, 2566 .err_val = loc_val ? loc_val->first_column : 0, 2567 }; 2568 2569 return new_term(term, &temp, str, /*num=*/0); 2570 } 2571 2572 int parse_events_term__term(struct parse_events_term **term, 2573 enum parse_events__term_type term_lhs, 2574 enum parse_events__term_type term_rhs, 2575 void *loc_term, void *loc_val) 2576 { 2577 return parse_events_term__str(term, term_lhs, NULL, 2578 strdup(config_term_name(term_rhs)), 2579 loc_term, loc_val); 2580 } 2581 2582 int parse_events_term__clone(struct parse_events_term **new, 2583 const struct parse_events_term *term) 2584 { 2585 char *str; 2586 struct parse_events_term temp = *term; 2587 2588 temp.used = false; 2589 if (term->config) { 2590 temp.config = strdup(term->config); 2591 if (!temp.config) 2592 return -ENOMEM; 2593 } 2594 if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) 2595 return new_term(new, &temp, /*str=*/NULL, term->val.num); 2596 2597 str = strdup(term->val.str); 2598 if (!str) { 2599 zfree(&temp.config); 2600 return -ENOMEM; 2601 } 2602 return new_term(new, &temp, str, /*num=*/0); 2603 } 2604 2605 void parse_events_term__delete(struct parse_events_term *term) 2606 { 2607 if (term->type_val != PARSE_EVENTS__TERM_TYPE_NUM) 2608 zfree(&term->val.str); 2609 2610 zfree(&term->config); 2611 free(term); 2612 } 2613 2614 static int parse_events_terms__copy(const struct parse_events_terms *src, 2615 struct parse_events_terms *dest) 2616 { 2617 struct parse_events_term *term; 2618 2619 list_for_each_entry (term, &src->terms, list) { 2620 struct parse_events_term *n; 2621 int ret; 2622 2623 ret = parse_events_term__clone(&n, term); 2624 if (ret) 2625 return ret; 2626 2627 list_add_tail(&n->list, &dest->terms); 2628 } 2629 return 0; 2630 } 2631 2632 void parse_events_terms__init(struct parse_events_terms *terms) 2633 { 2634 INIT_LIST_HEAD(&terms->terms); 2635 } 2636 2637 void parse_events_terms__exit(struct parse_events_terms *terms) 2638 { 2639 struct parse_events_term *term, *h; 2640 2641 list_for_each_entry_safe(term, h, &terms->terms, list) { 2642 list_del_init(&term->list); 2643 parse_events_term__delete(term); 2644 } 2645 } 2646 2647 void parse_events_terms__delete(struct parse_events_terms *terms) 2648 { 2649 if (!terms) 2650 return; 2651 parse_events_terms__exit(terms); 2652 free(terms); 2653 } 2654 2655 int parse_events_terms__to_strbuf(const struct parse_events_terms *terms, struct strbuf *sb) 2656 { 2657 struct parse_events_term *term; 2658 bool first = true; 2659 2660 if (!terms) 2661 return 0; 2662 2663 list_for_each_entry(term, &terms->terms, list) { 2664 int ret; 2665 2666 if (!first) { 2667 ret = strbuf_addch(sb, ','); 2668 if (ret < 0) 2669 return ret; 2670 } 2671 first = false; 2672 2673 if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) 2674 if (term->no_value) { 2675 assert(term->val.num == 1); 2676 ret = strbuf_addf(sb, "%s", term->config); 2677 } else 2678 ret = strbuf_addf(sb, "%s=%#"PRIx64, term->config, term->val.num); 2679 else if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR) { 2680 if (term->config) { 2681 ret = strbuf_addf(sb, "%s=", term->config); 2682 if (ret < 0) 2683 return ret; 2684 } else if ((unsigned int)term->type_term < __PARSE_EVENTS__TERM_TYPE_NR) { 2685 ret = strbuf_addf(sb, "%s=", config_term_name(term->type_term)); 2686 if (ret < 0) 2687 return ret; 2688 } 2689 assert(!term->no_value); 2690 ret = strbuf_addf(sb, "%s", term->val.str); 2691 } 2692 if (ret < 0) 2693 return ret; 2694 } 2695 return 0; 2696 } 2697 2698 static void config_terms_list(char *buf, size_t buf_sz) 2699 { 2700 int i; 2701 bool first = true; 2702 2703 buf[0] = '\0'; 2704 for (i = 0; i < __PARSE_EVENTS__TERM_TYPE_NR; i++) { 2705 const char *name = config_term_name(i); 2706 2707 if (!config_term_avail(i, NULL)) 2708 continue; 2709 if (!name) 2710 continue; 2711 if (name[0] == '<') 2712 continue; 2713 2714 if (strlen(buf) + strlen(name) + 2 >= buf_sz) 2715 return; 2716 2717 if (!first) 2718 strcat(buf, ","); 2719 else 2720 first = false; 2721 strcat(buf, name); 2722 } 2723 } 2724 2725 /* 2726 * Return string contains valid config terms of an event. 2727 * @additional_terms: For terms such as PMU sysfs terms. 2728 */ 2729 char *parse_events_formats_error_string(char *additional_terms) 2730 { 2731 char *str; 2732 /* "no-overwrite" is the longest name */ 2733 char static_terms[__PARSE_EVENTS__TERM_TYPE_NR * 2734 (sizeof("no-overwrite") - 1)]; 2735 2736 config_terms_list(static_terms, sizeof(static_terms)); 2737 /* valid terms */ 2738 if (additional_terms) { 2739 if (asprintf(&str, "valid terms: %s,%s", 2740 additional_terms, static_terms) < 0) 2741 goto fail; 2742 } else { 2743 if (asprintf(&str, "valid terms: %s", static_terms) < 0) 2744 goto fail; 2745 } 2746 return str; 2747 2748 fail: 2749 return NULL; 2750 } 2751