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