tools/perf/util/parse-events.c

   1 #include <linux/hw_breakpoint.h>
   2 #include "util.h"
   3 #include "../perf.h"
   4 #include "evlist.h"
   5 #include "evsel.h"
   6 #include "parse-options.h"
   7 #include "parse-events.h"
   8 #include "exec_cmd.h"
   9 #include "string.h"
  10 #include "symbol.h"
  11 #include "cache.h"
  12 #include "header.h"
  13 #include "debug.h"
  14 #include <api/fs/debugfs.h>
  15 #include "parse-events-bison.h"
  16 #define YY_EXTRA_TYPE int
  17 #include "parse-events-flex.h"
  18 #include "pmu.h"
  19 #include "thread_map.h"
  20
  21 #define MAX_NAME_LEN 100
  22
  23 struct event_symbol {
  24         const char      *symbol;
  25         const char      *alias;
  26 };
  27
  28 #ifdef PARSER_DEBUG
  29 extern int parse_events_debug;
  30 #endif
  31 int parse_events_parse(void *data, void *scanner);
  32
  33 static struct perf_pmu_event_symbol *perf_pmu_events_list;
  34 /*
  35  * The variable indicates the number of supported pmu event symbols.
  36  * 0 means not initialized and ready to init
  37  * -1 means failed to init, don't try anymore
  38  * >0 is the number of supported pmu event symbols
  39  */
  40 static int perf_pmu_events_list_num;
  41
  42 static struct event_symbol event_symbols_hw[PERF_COUNT_HW_MAX] = {
  43         [PERF_COUNT_HW_CPU_CYCLES] = {
  44                 .symbol = "cpu-cycles",
  45                 .alias  = "cycles",
  46         },
  47         [PERF_COUNT_HW_INSTRUCTIONS] = {
  48                 .symbol = "instructions",
  49                 .alias  = "",
  50         },
  51         [PERF_COUNT_HW_CACHE_REFERENCES] = {
  52                 .symbol = "cache-references",
  53                 .alias  = "",
  54         },
  55         [PERF_COUNT_HW_CACHE_MISSES] = {
  56                 .symbol = "cache-misses",
  57                 .alias  = "",
  58         },
  59         [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = {
  60                 .symbol = "branch-instructions",
  61                 .alias  = "branches",
  62         },
  63         [PERF_COUNT_HW_BRANCH_MISSES] = {
  64                 .symbol = "branch-misses",
  65                 .alias  = "",
  66         },
  67         [PERF_COUNT_HW_BUS_CYCLES] = {
  68                 .symbol = "bus-cycles",
  69                 .alias  = "",
  70         },
  71         [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = {
  72                 .symbol = "stalled-cycles-frontend",
  73                 .alias  = "idle-cycles-frontend",
  74         },
  75         [PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = {
  76                 .symbol = "stalled-cycles-backend",
  77                 .alias  = "idle-cycles-backend",
  78         },
  79         [PERF_COUNT_HW_REF_CPU_CYCLES] = {
  80                 .symbol = "ref-cycles",
  81                 .alias  = "",
  82         },
  83 };
  84
  85 static struct event_symbol event_symbols_sw[PERF_COUNT_SW_MAX] = {
  86         [PERF_COUNT_SW_CPU_CLOCK] = {
  87                 .symbol = "cpu-clock",
  88                 .alias  = "",
  89         },
  90         [PERF_COUNT_SW_TASK_CLOCK] = {
  91                 .symbol = "task-clock",
  92                 .alias  = "",
  93         },
  94         [PERF_COUNT_SW_PAGE_FAULTS] = {
  95                 .symbol = "page-faults",
  96                 .alias  = "faults",
  97         },
  98         [PERF_COUNT_SW_CONTEXT_SWITCHES] = {
  99                 .symbol = "context-switches",
 100                 .alias  = "cs",
 101         },
 102         [PERF_COUNT_SW_CPU_MIGRATIONS] = {
 103                 .symbol = "cpu-migrations",
 104                 .alias  = "migrations",
 105         },
 106         [PERF_COUNT_SW_PAGE_FAULTS_MIN] = {
 107                 .symbol = "minor-faults",
 108                 .alias  = "",
 109         },
 110         [PERF_COUNT_SW_PAGE_FAULTS_MAJ] = {
 111                 .symbol = "major-faults",
 112                 .alias  = "",
 113         },
 114         [PERF_COUNT_SW_ALIGNMENT_FAULTS] = {
 115                 .symbol = "alignment-faults",
 116                 .alias  = "",
 117         },
 118         [PERF_COUNT_SW_EMULATION_FAULTS] = {
 119                 .symbol = "emulation-faults",
 120                 .alias  = "",
 121         },
 122         [PERF_COUNT_SW_DUMMY] = {
 123                 .symbol = "dummy",
 124                 .alias  = "",
 125         },
 126 };
 127
 128 #define __PERF_EVENT_FIELD(config, name) \
 129         ((config & PERF_EVENT_##name##_MASK) >> PERF_EVENT_##name##_SHIFT)
 130
 131 #define PERF_EVENT_RAW(config)          __PERF_EVENT_FIELD(config, RAW)
 132 #define PERF_EVENT_CONFIG(config)       __PERF_EVENT_FIELD(config, CONFIG)
 133 #define PERF_EVENT_TYPE(config)         __PERF_EVENT_FIELD(config, TYPE)
 134 #define PERF_EVENT_ID(config)           __PERF_EVENT_FIELD(config, EVENT)
 135
 136 #define for_each_subsystem(sys_dir, sys_dirent, sys_next)              \
 137         while (!readdir_r(sys_dir, &sys_dirent, &sys_next) && sys_next)        \
 138         if (sys_dirent.d_type == DT_DIR &&                                     \
 139            (strcmp(sys_dirent.d_name, ".")) &&                                 \
 140            (strcmp(sys_dirent.d_name, "..")))
 141
 142 static int tp_event_has_id(struct dirent *sys_dir, struct dirent *evt_dir)
 143 {
 144         char evt_path[MAXPATHLEN];
 145         int fd;
 146
 147         snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", tracing_events_path,
 148                         sys_dir->d_name, evt_dir->d_name);
 149         fd = open(evt_path, O_RDONLY);
 150         if (fd < 0)
 151                 return -EINVAL;
 152         close(fd);
 153
 154         return 0;
 155 }
 156
 157 #define for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next)              \
 158         while (!readdir_r(evt_dir, &evt_dirent, &evt_next) && evt_next)        \
 159         if (evt_dirent.d_type == DT_DIR &&                                     \
 160            (strcmp(evt_dirent.d_name, ".")) &&                                 \
 161            (strcmp(evt_dirent.d_name, "..")) &&                                \
 162            (!tp_event_has_id(&sys_dirent, &evt_dirent)))
 163
 164 #define MAX_EVENT_LENGTH 512
 165
 166
 167 struct tracepoint_path *tracepoint_id_to_path(u64 config)
 168 {
 169         struct tracepoint_path *path = NULL;
 170         DIR *sys_dir, *evt_dir;
 171         struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
 172         char id_buf[24];
 173         int fd;
 174         u64 id;
 175         char evt_path[MAXPATHLEN];
 176         char dir_path[MAXPATHLEN];
 177
 178         if (debugfs_valid_mountpoint(tracing_events_path))
 179                 return NULL;
 180
 181         sys_dir = opendir(tracing_events_path);
 182         if (!sys_dir)
 183                 return NULL;
 184
 185         for_each_subsystem(sys_dir, sys_dirent, sys_next) {
 186
 187                 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
 188                          sys_dirent.d_name);
 189                 evt_dir = opendir(dir_path);
 190                 if (!evt_dir)
 191                         continue;
 192
 193                 for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
 194
 195                         snprintf(evt_path, MAXPATHLEN, "%s/%s/id", dir_path,
 196                                  evt_dirent.d_name);
 197                         fd = open(evt_path, O_RDONLY);
 198                         if (fd < 0)
 199                                 continue;
 200                         if (read(fd, id_buf, sizeof(id_buf)) < 0) {
 201                                 close(fd);
 202                                 continue;
 203                         }
 204                         close(fd);
 205                         id = atoll(id_buf);
 206                         if (id == config) {
 207                                 closedir(evt_dir);
 208                                 closedir(sys_dir);
 209                                 path = zalloc(sizeof(*path));
 210                                 path->system = malloc(MAX_EVENT_LENGTH);
 211                                 if (!path->system) {
 212                                         free(path);
 213                                         return NULL;
 214                                 }
 215                                 path->name = malloc(MAX_EVENT_LENGTH);
 216                                 if (!path->name) {
 217                                         zfree(&path->system);
 218                                         free(path);
 219                                         return NULL;
 220                                 }
 221                                 strncpy(path->system, sys_dirent.d_name,
 222                                         MAX_EVENT_LENGTH);
 223                                 strncpy(path->name, evt_dirent.d_name,
 224                                         MAX_EVENT_LENGTH);
 225                                 return path;
 226                         }
 227                 }
 228                 closedir(evt_dir);
 229         }
 230
 231         closedir(sys_dir);
 232         return NULL;
 233 }
 234
 235 struct tracepoint_path *tracepoint_name_to_path(const char *name)
 236 {
 237         struct tracepoint_path *path = zalloc(sizeof(*path));
 238         char *str = strchr(name, ':');
 239
 240         if (path == NULL || str == NULL) {
 241                 free(path);
 242                 return NULL;
 243         }
 244
 245         path->system = strndup(name, str - name);
 246         path->name = strdup(str+1);
 247
 248         if (path->system == NULL || path->name == NULL) {
 249                 zfree(&path->system);
 250                 zfree(&path->name);
 251                 free(path);
 252                 path = NULL;
 253         }
 254
 255         return path;
 256 }
 257
 258 const char *event_type(int type)
 259 {
 260         switch (type) {
 261         case PERF_TYPE_HARDWARE:
 262                 return "hardware";
 263
 264         case PERF_TYPE_SOFTWARE:
 265                 return "software";
 266
 267         case PERF_TYPE_TRACEPOINT:
 268                 return "tracepoint";
 269
 270         case PERF_TYPE_HW_CACHE:
 271                 return "hardware-cache";
 272
 273         default:
 274                 break;
 275         }
 276
 277         return "unknown";
 278 }
 279
 280
 281
 282 static struct perf_evsel *
 283 __add_event(struct list_head *list, int *idx,
 284             struct perf_event_attr *attr,
 285             char *name, struct cpu_map *cpus)
 286 {
 287         struct perf_evsel *evsel;
 288
 289         event_attr_init(attr);
 290
 291         evsel = perf_evsel__new_idx(attr, (*idx)++);
 292         if (!evsel)
 293                 return NULL;
 294
 295         evsel->cpus = cpus;
 296         if (name)
 297                 evsel->name = strdup(name);
 298         list_add_tail(&evsel->node, list);
 299         return evsel;
 300 }
 301
 302 static int add_event(struct list_head *list, int *idx,
 303                      struct perf_event_attr *attr, char *name)
 304 {
 305         return __add_event(list, idx, attr, name, NULL) ? 0 : -ENOMEM;
 306 }
 307
 308 static int parse_aliases(char *str, const char *names[][PERF_EVSEL__MAX_ALIASES], int size)
 309 {
 310         int i, j;
 311         int n, longest = -1;
 312
 313         for (i = 0; i < size; i++) {
 314                 for (j = 0; j < PERF_EVSEL__MAX_ALIASES && names[i][j]; j++) {
 315                         n = strlen(names[i][j]);
 316                         if (n > longest && !strncasecmp(str, names[i][j], n))
 317                                 longest = n;
 318                 }
 319                 if (longest > 0)
 320                         return i;
 321         }
 322
 323         return -1;
 324 }
 325
 326 int parse_events_add_cache(struct list_head *list, int *idx,
 327                            char *type, char *op_result1, char *op_result2)
 328 {
 329         struct perf_event_attr attr;
 330         char name[MAX_NAME_LEN];
 331         int cache_type = -1, cache_op = -1, cache_result = -1;
 332         char *op_result[2] = { op_result1, op_result2 };
 333         int i, n;
 334
 335         /*
 336          * No fallback - if we cannot get a clear cache type
 337          * then bail out:
 338          */
 339         cache_type = parse_aliases(type, perf_evsel__hw_cache,
 340                                    PERF_COUNT_HW_CACHE_MAX);
 341         if (cache_type == -1)
 342                 return -EINVAL;
 343
 344         n = snprintf(name, MAX_NAME_LEN, "%s", type);
 345
 346         for (i = 0; (i < 2) && (op_result[i]); i++) {
 347                 char *str = op_result[i];
 348
 349                 n += snprintf(name + n, MAX_NAME_LEN - n, "-%s", str);
 350
 351                 if (cache_op == -1) {
 352                         cache_op = parse_aliases(str, perf_evsel__hw_cache_op,
 353                                                  PERF_COUNT_HW_CACHE_OP_MAX);
 354                         if (cache_op >= 0) {
 355                                 if (!perf_evsel__is_cache_op_valid(cache_type, cache_op))
 356                                         return -EINVAL;
 357                                 continue;
 358                         }
 359                 }
 360
 361                 if (cache_result == -1) {
 362                         cache_result = parse_aliases(str, perf_evsel__hw_cache_result,
 363                                                      PERF_COUNT_HW_CACHE_RESULT_MAX);
 364                         if (cache_result >= 0)
 365                                 continue;
 366                 }
 367         }
 368
 369         /*
 370          * Fall back to reads:
 371          */
 372         if (cache_op == -1)
 373                 cache_op = PERF_COUNT_HW_CACHE_OP_READ;
 374
 375         /*
 376          * Fall back to accesses:
 377          */
 378         if (cache_result == -1)
 379                 cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS;
 380
 381         memset(&attr, 0, sizeof(attr));
 382         attr.config = cache_type | (cache_op << 8) | (cache_result << 16);
 383         attr.type = PERF_TYPE_HW_CACHE;
 384         return add_event(list, idx, &attr, name);
 385 }
 386
 387 static int add_tracepoint(struct list_head *list, int *idx,
 388                           char *sys_name, char *evt_name)
 389 {
 390         struct perf_evsel *evsel;
 391
 392         evsel = perf_evsel__newtp_idx(sys_name, evt_name, (*idx)++);
 393         if (!evsel)
 394                 return -ENOMEM;
 395
 396         list_add_tail(&evsel->node, list);
 397
 398         return 0;
 399 }
 400
 401 static int add_tracepoint_multi_event(struct list_head *list, int *idx,
 402                                       char *sys_name, char *evt_name)
 403 {
 404         char evt_path[MAXPATHLEN];
 405         struct dirent *evt_ent;
 406         DIR *evt_dir;
 407         int ret = 0;
 408
 409         snprintf(evt_path, MAXPATHLEN, "%s/%s", tracing_events_path, sys_name);
 410         evt_dir = opendir(evt_path);
 411         if (!evt_dir) {
 412                 perror("Can't open event dir");
 413                 return -1;
 414         }
 415
 416         while (!ret && (evt_ent = readdir(evt_dir))) {
 417                 if (!strcmp(evt_ent->d_name, ".")
 418                     || !strcmp(evt_ent->d_name, "..")
 419                     || !strcmp(evt_ent->d_name, "enable")
 420                     || !strcmp(evt_ent->d_name, "filter"))
 421                         continue;
 422
 423                 if (!strglobmatch(evt_ent->d_name, evt_name))
 424                         continue;
 425
 426                 ret = add_tracepoint(list, idx, sys_name, evt_ent->d_name);
 427         }
 428
 429         closedir(evt_dir);
 430         return ret;
 431 }
 432
 433 static int add_tracepoint_event(struct list_head *list, int *idx,
 434                                 char *sys_name, char *evt_name)
 435 {
 436         return strpbrk(evt_name, "*?") ?
 437                add_tracepoint_multi_event(list, idx, sys_name, evt_name) :
 438                add_tracepoint(list, idx, sys_name, evt_name);
 439 }
 440
 441 static int add_tracepoint_multi_sys(struct list_head *list, int *idx,
 442                                     char *sys_name, char *evt_name)
 443 {
 444         struct dirent *events_ent;
 445         DIR *events_dir;
 446         int ret = 0;
 447
 448         events_dir = opendir(tracing_events_path);
 449         if (!events_dir) {
 450                 perror("Can't open event dir");
 451                 return -1;
 452         }
 453
 454         while (!ret && (events_ent = readdir(events_dir))) {
 455                 if (!strcmp(events_ent->d_name, ".")
 456                     || !strcmp(events_ent->d_name, "..")
 457                     || !strcmp(events_ent->d_name, "enable")
 458                     || !strcmp(events_ent->d_name, "header_event")
 459                     || !strcmp(events_ent->d_name, "header_page"))
 460                         continue;
 461
 462                 if (!strglobmatch(events_ent->d_name, sys_name))
 463                         continue;
 464
 465                 ret = add_tracepoint_event(list, idx, events_ent->d_name,
 466                                            evt_name);
 467         }
 468
 469         closedir(events_dir);
 470         return ret;
 471 }
 472
 473 int parse_events_add_tracepoint(struct list_head *list, int *idx,
 474                                 char *sys, char *event)
 475 {
 476         int ret;
 477
 478         ret = debugfs_valid_mountpoint(tracing_events_path);
 479         if (ret)
 480                 return ret;
 481
 482         if (strpbrk(sys, "*?"))
 483                 return add_tracepoint_multi_sys(list, idx, sys, event);
 484         else
 485                 return add_tracepoint_event(list, idx, sys, event);
 486 }
 487
 488 static int
 489 parse_breakpoint_type(const char *type, struct perf_event_attr *attr)
 490 {
 491         int i;
 492
 493         for (i = 0; i < 3; i++) {
 494                 if (!type || !type[i])
 495                         break;
 496
 497 #define CHECK_SET_TYPE(bit)             \
 498 do {                                    \
 499         if (attr->bp_type & bit)        \
 500                 return -EINVAL;         \
 501         else                            \
 502                 attr->bp_type |= bit;   \
 503 } while (0)
 504
 505                 switch (type[i]) {
 506                 case 'r':
 507                         CHECK_SET_TYPE(HW_BREAKPOINT_R);
 508                         break;
 509                 case 'w':
 510                         CHECK_SET_TYPE(HW_BREAKPOINT_W);
 511                         break;
 512                 case 'x':
 513                         CHECK_SET_TYPE(HW_BREAKPOINT_X);
 514                         break;
 515                 default:
 516                         return -EINVAL;
 517                 }
 518         }
 519
 520 #undef CHECK_SET_TYPE
 521
 522         if (!attr->bp_type) /* Default */
 523                 attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W;
 524
 525         return 0;
 526 }
 527
 528 int parse_events_add_breakpoint(struct list_head *list, int *idx,
 529                                 void *ptr, char *type)
 530 {
 531         struct perf_event_attr attr;
 532
 533         memset(&attr, 0, sizeof(attr));
 534         attr.bp_addr = (unsigned long) ptr;
 535
 536         if (parse_breakpoint_type(type, &attr))
 537                 return -EINVAL;
 538
 539         /*
 540          * We should find a nice way to override the access length
 541          * Provide some defaults for now
 542          */
 543         if (attr.bp_type == HW_BREAKPOINT_X)
 544                 attr.bp_len = sizeof(long);
 545         else
 546                 attr.bp_len = HW_BREAKPOINT_LEN_4;
 547
 548         attr.type = PERF_TYPE_BREAKPOINT;
 549         attr.sample_period = 1;
 550
 551         return add_event(list, idx, &attr, NULL);
 552 }
 553
 554 static int config_term(struct perf_event_attr *attr,
 555                        struct parse_events_term *term)
 556 {
 557 #define CHECK_TYPE_VAL(type)                                    \
 558 do {                                                            \
 559         if (PARSE_EVENTS__TERM_TYPE_ ## type != term->type_val) \
 560                 return -EINVAL;                                 \
 561 } while (0)
 562
 563         switch (term->type_term) {
 564         case PARSE_EVENTS__TERM_TYPE_CONFIG:
 565                 CHECK_TYPE_VAL(NUM);
 566                 attr->config = term->val.num;
 567                 break;
 568         case PARSE_EVENTS__TERM_TYPE_CONFIG1:
 569                 CHECK_TYPE_VAL(NUM);
 570                 attr->config1 = term->val.num;
 571                 break;
 572         case PARSE_EVENTS__TERM_TYPE_CONFIG2:
 573                 CHECK_TYPE_VAL(NUM);
 574                 attr->config2 = term->val.num;
 575                 break;
 576         case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
 577                 CHECK_TYPE_VAL(NUM);
 578                 attr->sample_period = term->val.num;
 579                 break;
 580         case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
 581                 /*
 582                  * TODO uncomment when the field is available
 583                  * attr->branch_sample_type = term->val.num;
 584                  */
 585                 break;
 586         case PARSE_EVENTS__TERM_TYPE_NAME:
 587                 CHECK_TYPE_VAL(STR);
 588                 break;
 589         default:
 590                 return -EINVAL;
 591         }
 592
 593         return 0;
 594 #undef CHECK_TYPE_VAL
 595 }
 596
 597 static int config_attr(struct perf_event_attr *attr,
 598                        struct list_head *head, int fail)
 599 {
 600         struct parse_events_term *term;
 601
 602         list_for_each_entry(term, head, list)
 603                 if (config_term(attr, term) && fail)
 604                         return -EINVAL;
 605
 606         return 0;
 607 }
 608
 609 int parse_events_add_numeric(struct list_head *list, int *idx,
 610                              u32 type, u64 config,
 611                              struct list_head *head_config)
 612 {
 613         struct perf_event_attr attr;
 614
 615         memset(&attr, 0, sizeof(attr));
 616         attr.type = type;
 617         attr.config = config;
 618
 619         if (head_config &&
 620             config_attr(&attr, head_config, 1))
 621                 return -EINVAL;
 622
 623         return add_event(list, idx, &attr, NULL);
 624 }
 625
 626 static int parse_events__is_name_term(struct parse_events_term *term)
 627 {
 628         return term->type_term == PARSE_EVENTS__TERM_TYPE_NAME;
 629 }
 630
 631 static char *pmu_event_name(struct list_head *head_terms)
 632 {
 633         struct parse_events_term *term;
 634
 635         list_for_each_entry(term, head_terms, list)
 636                 if (parse_events__is_name_term(term))
 637                         return term->val.str;
 638
 639         return NULL;
 640 }
 641
 642 int parse_events_add_pmu(struct list_head *list, int *idx,
 643                          char *name, struct list_head *head_config)
 644 {
 645         struct perf_event_attr attr;
 646         struct perf_pmu_info info;
 647         struct perf_pmu *pmu;
 648         struct perf_evsel *evsel;
 649
 650         pmu = perf_pmu__find(name);
 651         if (!pmu)
 652                 return -EINVAL;
 653
 654         if (pmu->default_config) {
 655                 memcpy(&attr, pmu->default_config,
 656                        sizeof(struct perf_event_attr));
 657         } else {
 658                 memset(&attr, 0, sizeof(attr));
 659         }
 660
 661         if (!head_config) {
 662                 attr.type = pmu->type;
 663                 evsel = __add_event(list, idx, &attr, NULL, pmu->cpus);
 664                 return evsel ? 0 : -ENOMEM;
 665         }
 666
 667         if (perf_pmu__check_alias(pmu, head_config, &info))
 668                 return -EINVAL;
 669
 670         /*
 671          * Configure hardcoded terms first, no need to check
 672          * return value when called with fail == 0 ;)
 673          */
 674         config_attr(&attr, head_config, 0);
 675
 676         if (perf_pmu__config(pmu, &attr, head_config))
 677                 return -EINVAL;
 678
 679         evsel = __add_event(list, idx, &attr, pmu_event_name(head_config),
 680                             pmu->cpus);
 681         if (evsel) {
 682                 evsel->unit = info.unit;
 683                 evsel->scale = info.scale;
 684         }
 685
 686         return evsel ? 0 : -ENOMEM;
 687 }
 688
 689 int parse_events__modifier_group(struct list_head *list,
 690                                  char *event_mod)
 691 {
 692         return parse_events__modifier_event(list, event_mod, true);
 693 }
 694
 695 void parse_events__set_leader(char *name, struct list_head *list)
 696 {
 697         struct perf_evsel *leader;
 698
 699         __perf_evlist__set_leader(list);
 700         leader = list_entry(list->next, struct perf_evsel, node);
 701         leader->group_name = name ? strdup(name) : NULL;
 702 }
 703
 704 /* list_event is assumed to point to malloc'ed memory */
 705 void parse_events_update_lists(struct list_head *list_event,
 706                                struct list_head *list_all)
 707 {
 708         /*
 709          * Called for single event definition. Update the
 710          * 'all event' list, and reinit the 'single event'
 711          * list, for next event definition.
 712          */
 713         list_splice_tail(list_event, list_all);
 714         free(list_event);
 715 }
 716
 717 struct event_modifier {
 718         int eu;
 719         int ek;
 720         int eh;
 721         int eH;
 722         int eG;
 723         int precise;
 724         int exclude_GH;
 725         int sample_read;
 726         int pinned;
 727 };
 728
 729 static int get_event_modifier(struct event_modifier *mod, char *str,
 730                                struct perf_evsel *evsel)
 731 {
 732         int eu = evsel ? evsel->attr.exclude_user : 0;
 733         int ek = evsel ? evsel->attr.exclude_kernel : 0;
 734         int eh = evsel ? evsel->attr.exclude_hv : 0;
 735         int eH = evsel ? evsel->attr.exclude_host : 0;
 736         int eG = evsel ? evsel->attr.exclude_guest : 0;
 737         int precise = evsel ? evsel->attr.precise_ip : 0;
 738         int sample_read = 0;
 739         int pinned = evsel ? evsel->attr.pinned : 0;
 740
 741         int exclude = eu | ek | eh;
 742         int exclude_GH = evsel ? evsel->exclude_GH : 0;
 743
 744         memset(mod, 0, sizeof(*mod));
 745
 746         while (*str) {
 747                 if (*str == 'u') {
 748                         if (!exclude)
 749                                 exclude = eu = ek = eh = 1;
 750                         eu = 0;
 751                 } else if (*str == 'k') {
 752                         if (!exclude)
 753                                 exclude = eu = ek = eh = 1;
 754                         ek = 0;
 755                 } else if (*str == 'h') {
 756                         if (!exclude)
 757                                 exclude = eu = ek = eh = 1;
 758                         eh = 0;
 759                 } else if (*str == 'G') {
 760                         if (!exclude_GH)
 761                                 exclude_GH = eG = eH = 1;
 762                         eG = 0;
 763                 } else if (*str == 'H') {
 764                         if (!exclude_GH)
 765                                 exclude_GH = eG = eH = 1;
 766                         eH = 0;
 767                 } else if (*str == 'p') {
 768                         precise++;
 769                         /* use of precise requires exclude_guest */
 770                         if (!exclude_GH)
 771                                 eG = 1;
 772                 } else if (*str == 'S') {
 773                         sample_read = 1;
 774                 } else if (*str == 'D') {
 775                         pinned = 1;
 776                 } else
 777                         break;
 778
 779                 ++str;
 780         }
 781
 782         /*
 783          * precise ip:
 784          *
 785          *  0 - SAMPLE_IP can have arbitrary skid
 786          *  1 - SAMPLE_IP must have constant skid
 787          *  2 - SAMPLE_IP requested to have 0 skid
 788          *  3 - SAMPLE_IP must have 0 skid
 789          *
 790          *  See also PERF_RECORD_MISC_EXACT_IP
 791          */
 792         if (precise > 3)
 793                 return -EINVAL;
 794
 795         mod->eu = eu;
 796         mod->ek = ek;
 797         mod->eh = eh;
 798         mod->eH = eH;
 799         mod->eG = eG;
 800         mod->precise = precise;
 801         mod->exclude_GH = exclude_GH;
 802         mod->sample_read = sample_read;
 803         mod->pinned = pinned;
 804
 805         return 0;
 806 }
 807
 808 /*
 809  * Basic modifier sanity check to validate it contains only one
 810  * instance of any modifier (apart from 'p') present.
 811  */
 812 static int check_modifier(char *str)
 813 {
 814         char *p = str;
 815
 816         /* The sizeof includes 0 byte as well. */
 817         if (strlen(str) > (sizeof("ukhGHpppSD") - 1))
 818                 return -1;
 819
 820         while (*p) {
 821                 if (*p != 'p' && strchr(p + 1, *p))
 822                         return -1;
 823                 p++;
 824         }
 825
 826         return 0;
 827 }
 828
 829 int parse_events__modifier_event(struct list_head *list, char *str, bool add)
 830 {
 831         struct perf_evsel *evsel;
 832         struct event_modifier mod;
 833
 834         if (str == NULL)
 835                 return 0;
 836
 837         if (check_modifier(str))
 838                 return -EINVAL;
 839
 840         if (!add && get_event_modifier(&mod, str, NULL))
 841                 return -EINVAL;
 842
 843         __evlist__for_each(list, evsel) {
 844                 if (add && get_event_modifier(&mod, str, evsel))
 845                         return -EINVAL;
 846
 847                 evsel->attr.exclude_user   = mod.eu;
 848                 evsel->attr.exclude_kernel = mod.ek;
 849                 evsel->attr.exclude_hv     = mod.eh;
 850                 evsel->attr.precise_ip     = mod.precise;
 851                 evsel->attr.exclude_host   = mod.eH;
 852                 evsel->attr.exclude_guest  = mod.eG;
 853                 evsel->exclude_GH          = mod.exclude_GH;
 854                 evsel->sample_read         = mod.sample_read;
 855
 856                 if (perf_evsel__is_group_leader(evsel))
 857                         evsel->attr.pinned = mod.pinned;
 858         }
 859
 860         return 0;
 861 }
 862
 863 int parse_events_name(struct list_head *list, char *name)
 864 {
 865         struct perf_evsel *evsel;
 866
 867         __evlist__for_each(list, evsel) {
 868                 if (!evsel->name)
 869                         evsel->name = strdup(name);
 870         }
 871
 872         return 0;
 873 }
 874
 875 static int
 876 comp_pmu(const void *p1, const void *p2)
 877 {
 878         struct perf_pmu_event_symbol *pmu1 = (struct perf_pmu_event_symbol *) p1;
 879         struct perf_pmu_event_symbol *pmu2 = (struct perf_pmu_event_symbol *) p2;
 880
 881         return strcmp(pmu1->symbol, pmu2->symbol);
 882 }
 883
 884 static void perf_pmu__parse_cleanup(void)
 885 {
 886         if (perf_pmu_events_list_num > 0) {
 887                 struct perf_pmu_event_symbol *p;
 888                 int i;
 889
 890                 for (i = 0; i < perf_pmu_events_list_num; i++) {
 891                         p = perf_pmu_events_list + i;
 892                         free(p->symbol);
 893                 }
 894                 free(perf_pmu_events_list);
 895                 perf_pmu_events_list = NULL;
 896                 perf_pmu_events_list_num = 0;
 897         }
 898 }
 899
 900 #define SET_SYMBOL(str, stype)          \
 901 do {                                    \
 902         p->symbol = str;                \
 903         if (!p->symbol)                 \
 904                 goto err;               \
 905         p->type = stype;                \
 906 } while (0)
 907
 908 /*
 909  * Read the pmu events list from sysfs
 910  * Save it into perf_pmu_events_list
 911  */
 912 static void perf_pmu__parse_init(void)
 913 {
 914
 915         struct perf_pmu *pmu = NULL;
 916         struct perf_pmu_alias *alias;
 917         int len = 0;
 918
 919         pmu = perf_pmu__find("cpu");
 920         if ((pmu == NULL) || list_empty(&pmu->aliases)) {
 921                 perf_pmu_events_list_num = -1;
 922                 return;
 923         }
 924         list_for_each_entry(alias, &pmu->aliases, list) {
 925                 if (strchr(alias->name, '-'))
 926                         len++;
 927                 len++;
 928         }
 929         perf_pmu_events_list = malloc(sizeof(struct perf_pmu_event_symbol) * len);
 930         if (!perf_pmu_events_list)
 931                 return;
 932         perf_pmu_events_list_num = len;
 933
 934         len = 0;
 935         list_for_each_entry(alias, &pmu->aliases, list) {
 936                 struct perf_pmu_event_symbol *p = perf_pmu_events_list + len;
 937                 char *tmp = strchr(alias->name, '-');
 938
 939                 if (tmp != NULL) {
 940                         SET_SYMBOL(strndup(alias->name, tmp - alias->name),
 941                                         PMU_EVENT_SYMBOL_PREFIX);
 942                         p++;
 943                         SET_SYMBOL(strdup(++tmp), PMU_EVENT_SYMBOL_SUFFIX);
 944                         len += 2;
 945                 } else {
 946                         SET_SYMBOL(strdup(alias->name), PMU_EVENT_SYMBOL);
 947                         len++;
 948                 }
 949         }
 950         qsort(perf_pmu_events_list, len,
 951                 sizeof(struct perf_pmu_event_symbol), comp_pmu);
 952
 953         return;
 954 err:
 955         perf_pmu__parse_cleanup();
 956 }
 957
 958 enum perf_pmu_event_symbol_type
 959 perf_pmu__parse_check(const char *name)
 960 {
 961         struct perf_pmu_event_symbol p, *r;
 962
 963         /* scan kernel pmu events from sysfs if needed */
 964         if (perf_pmu_events_list_num == 0)
 965                 perf_pmu__parse_init();
 966         /*
 967          * name "cpu" could be prefix of cpu-cycles or cpu// events.
 968          * cpu-cycles has been handled by hardcode.
 969          * So it must be cpu// events, not kernel pmu event.
 970          */
 971         if ((perf_pmu_events_list_num <= 0) || !strcmp(name, "cpu"))
 972                 return PMU_EVENT_SYMBOL_ERR;
 973
 974         p.symbol = strdup(name);
 975         r = bsearch(&p, perf_pmu_events_list,
 976                         (size_t) perf_pmu_events_list_num,
 977                         sizeof(struct perf_pmu_event_symbol), comp_pmu);
 978         free(p.symbol);
 979         return r ? r->type : PMU_EVENT_SYMBOL_ERR;
 980 }
 981
 982 static int parse_events__scanner(const char *str, void *data, int start_token)
 983 {
 984         YY_BUFFER_STATE buffer;
 985         void *scanner;
 986         int ret;
 987
 988         ret = parse_events_lex_init_extra(start_token, &scanner);
 989         if (ret)
 990                 return ret;
 991
 992         buffer = parse_events__scan_string(str, scanner);
 993
 994 #ifdef PARSER_DEBUG
 995         parse_events_debug = 1;
 996 #endif
 997         ret = parse_events_parse(data, scanner);
 998
 999         parse_events__flush_buffer(buffer, scanner);
1000         parse_events__delete_buffer(buffer, scanner);
1001         parse_events_lex_destroy(scanner);
1002         return ret;
1003 }
1004
1005 /*
1006  * parse event config string, return a list of event terms.
1007  */
1008 int parse_events_terms(struct list_head *terms, const char *str)
1009 {
1010         struct parse_events_terms data = {
1011                 .terms = NULL,
1012         };
1013         int ret;
1014
1015         ret = parse_events__scanner(str, &data, PE_START_TERMS);
1016         if (!ret) {
1017                 list_splice(data.terms, terms);
1018                 zfree(&data.terms);
1019                 return 0;
1020         }
1021
1022         if (data.terms)
1023                 parse_events__free_terms(data.terms);
1024         return ret;
1025 }
1026
1027 int parse_events(struct perf_evlist *evlist, const char *str)
1028 {
1029         struct parse_events_evlist data = {
1030                 .list = LIST_HEAD_INIT(data.list),
1031                 .idx  = evlist->nr_entries,
1032         };
1033         int ret;
1034
1035         ret = parse_events__scanner(str, &data, PE_START_EVENTS);
1036         perf_pmu__parse_cleanup();
1037         if (!ret) {
1038                 int entries = data.idx - evlist->nr_entries;
1039                 perf_evlist__splice_list_tail(evlist, &data.list, entries);
1040                 evlist->nr_groups += data.nr_groups;
1041                 return 0;
1042         }
1043
1044         /*
1045          * There are 2 users - builtin-record and builtin-test objects.
1046          * Both call perf_evlist__delete in case of error, so we dont
1047          * need to bother.
1048          */
1049         return ret;
1050 }
1051
1052 int parse_events_option(const struct option *opt, const char *str,
1053                         int unset __maybe_unused)
1054 {
1055         struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
1056         int ret = parse_events(evlist, str);
1057
1058         if (ret) {
1059                 fprintf(stderr, "invalid or unsupported event: '%s'\n", str);
1060                 fprintf(stderr, "Run 'perf list' for a list of valid events\n");
1061         }
1062         return ret;
1063 }
1064
1065 int parse_filter(const struct option *opt, const char *str,
1066                  int unset __maybe_unused)
1067 {
1068         struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
1069         struct perf_evsel *last = NULL;
1070
1071         if (evlist->nr_entries > 0)
1072                 last = perf_evlist__last(evlist);
1073
1074         if (last == NULL || last->attr.type != PERF_TYPE_TRACEPOINT) {
1075                 fprintf(stderr,
1076                         "--filter option should follow a -e tracepoint option\n");
1077                 return -1;
1078         }
1079
1080         last->filter = strdup(str);
1081         if (last->filter == NULL) {
1082                 fprintf(stderr, "not enough memory to hold filter string\n");
1083                 return -1;
1084         }
1085
1086         return 0;
1087 }
1088
1089 static const char * const event_type_descriptors[] = {
1090         "Hardware event",
1091         "Software event",
1092         "Tracepoint event",
1093         "Hardware cache event",
1094         "Raw hardware event descriptor",
1095         "Hardware breakpoint",
1096 };
1097
1098 /*
1099  * Print the events from <debugfs_mount_point>/tracing/events
1100  */
1101
1102 void print_tracepoint_events(const char *subsys_glob, const char *event_glob,
1103                              bool name_only)
1104 {
1105         DIR *sys_dir, *evt_dir;
1106         struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
1107         char evt_path[MAXPATHLEN];
1108         char dir_path[MAXPATHLEN];
1109         char sbuf[STRERR_BUFSIZE];
1110
1111         if (debugfs_valid_mountpoint(tracing_events_path)) {
1112                 printf("  [ Tracepoints not available: %s ]\n",
1113                         strerror_r(errno, sbuf, sizeof(sbuf)));
1114                 return;
1115         }
1116
1117         sys_dir = opendir(tracing_events_path);
1118         if (!sys_dir)
1119                 return;
1120
1121         for_each_subsystem(sys_dir, sys_dirent, sys_next) {
1122                 if (subsys_glob != NULL &&
1123                     !strglobmatch(sys_dirent.d_name, subsys_glob))
1124                         continue;
1125
1126                 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
1127                          sys_dirent.d_name);
1128                 evt_dir = opendir(dir_path);
1129                 if (!evt_dir)
1130                         continue;
1131
1132                 for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
1133                         if (event_glob != NULL &&
1134                             !strglobmatch(evt_dirent.d_name, event_glob))
1135                                 continue;
1136
1137                         if (name_only) {
1138                                 printf("%s:%s ", sys_dirent.d_name, evt_dirent.d_name);
1139                                 continue;
1140                         }
1141
1142                         snprintf(evt_path, MAXPATHLEN, "%s:%s",
1143                                  sys_dirent.d_name, evt_dirent.d_name);
1144                         printf("  %-50s [%s]\n", evt_path,
1145                                 event_type_descriptors[PERF_TYPE_TRACEPOINT]);
1146                 }
1147                 closedir(evt_dir);
1148         }
1149         closedir(sys_dir);
1150 }
1151
1152 /*
1153  * Check whether event is in <debugfs_mount_point>/tracing/events
1154  */
1155
1156 int is_valid_tracepoint(const char *event_string)
1157 {
1158         DIR *sys_dir, *evt_dir;
1159         struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
1160         char evt_path[MAXPATHLEN];
1161         char dir_path[MAXPATHLEN];
1162
1163         if (debugfs_valid_mountpoint(tracing_events_path))
1164                 return 0;
1165
1166         sys_dir = opendir(tracing_events_path);
1167         if (!sys_dir)
1168                 return 0;
1169
1170         for_each_subsystem(sys_dir, sys_dirent, sys_next) {
1171
1172                 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
1173                          sys_dirent.d_name);
1174                 evt_dir = opendir(dir_path);
1175                 if (!evt_dir)
1176                         continue;
1177
1178                 for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
1179                         snprintf(evt_path, MAXPATHLEN, "%s:%s",
1180                                  sys_dirent.d_name, evt_dirent.d_name);
1181                         if (!strcmp(evt_path, event_string)) {
1182                                 closedir(evt_dir);
1183                                 closedir(sys_dir);
1184                                 return 1;
1185                         }
1186                 }
1187                 closedir(evt_dir);
1188         }
1189         closedir(sys_dir);
1190         return 0;
1191 }
1192
1193 static bool is_event_supported(u8 type, unsigned config)
1194 {
1195         bool ret = true;
1196         int open_return;
1197         struct perf_evsel *evsel;
1198         struct perf_event_attr attr = {
1199                 .type = type,
1200                 .config = config,
1201                 .disabled = 1,
1202         };
1203         struct {
1204                 struct thread_map map;
1205                 int threads[1];
1206         } tmap = {
1207                 .map.nr  = 1,
1208                 .threads = { 0 },
1209         };
1210
1211         evsel = perf_evsel__new(&attr);
1212         if (evsel) {
1213                 open_return = perf_evsel__open(evsel, NULL, &tmap.map);
1214                 ret = open_return >= 0;
1215
1216                 if (open_return == -EACCES) {
1217                         /*
1218                          * This happens if the paranoid value
1219                          * /proc/sys/kernel/perf_event_paranoid is set to 2
1220                          * Re-run with exclude_kernel set; we don't do that
1221                          * by default as some ARM machines do not support it.
1222                          *
1223                          */
1224                         evsel->attr.exclude_kernel = 1;
1225                         ret = perf_evsel__open(evsel, NULL, &tmap.map) >= 0;
1226                 }
1227                 perf_evsel__delete(evsel);
1228         }
1229
1230         return ret;
1231 }
1232
1233 static void __print_events_type(u8 type, struct event_symbol *syms,
1234                                 unsigned max)
1235 {
1236         char name[64];
1237         unsigned i;
1238
1239         for (i = 0; i < max ; i++, syms++) {
1240                 if (!is_event_supported(type, i))
1241                         continue;
1242
1243                 if (strlen(syms->alias))
1244                         snprintf(name, sizeof(name),  "%s OR %s",
1245                                  syms->symbol, syms->alias);
1246                 else
1247                         snprintf(name, sizeof(name), "%s", syms->symbol);
1248
1249                 printf("  %-50s [%s]\n", name, event_type_descriptors[type]);
1250         }
1251 }
1252
1253 void print_events_type(u8 type)
1254 {
1255         if (type == PERF_TYPE_SOFTWARE)
1256                 __print_events_type(type, event_symbols_sw, PERF_COUNT_SW_MAX);
1257         else
1258                 __print_events_type(type, event_symbols_hw, PERF_COUNT_HW_MAX);
1259 }
1260
1261 int print_hwcache_events(const char *event_glob, bool name_only)
1262 {
1263         unsigned int type, op, i, printed = 0;
1264         char name[64];
1265
1266         for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) {
1267                 for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) {
1268                         /* skip invalid cache type */
1269                         if (!perf_evsel__is_cache_op_valid(type, op))
1270                                 continue;
1271
1272                         for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) {
1273                                 __perf_evsel__hw_cache_type_op_res_name(type, op, i,
1274                                                                         name, sizeof(name));
1275                                 if (event_glob != NULL && !strglobmatch(name, event_glob))
1276                                         continue;
1277
1278                                 if (!is_event_supported(PERF_TYPE_HW_CACHE,
1279                                                         type | (op << 8) | (i << 16)))
1280                                         continue;
1281
1282                                 if (name_only)
1283                                         printf("%s ", name);
1284                                 else
1285                                         printf("  %-50s [%s]\n", name,
1286                                                event_type_descriptors[PERF_TYPE_HW_CACHE]);
1287                                 ++printed;
1288                         }
1289                 }
1290         }
1291
1292         if (printed)
1293                 printf("\n");
1294         return printed;
1295 }
1296
1297 static void print_symbol_events(const char *event_glob, unsigned type,
1298                                 struct event_symbol *syms, unsigned max,
1299                                 bool name_only)
1300 {
1301         unsigned i, printed = 0;
1302         char name[MAX_NAME_LEN];
1303
1304         for (i = 0; i < max; i++, syms++) {
1305
1306                 if (event_glob != NULL &&
1307                     !(strglobmatch(syms->symbol, event_glob) ||
1308                       (syms->alias && strglobmatch(syms->alias, event_glob))))
1309                         continue;
1310
1311                 if (!is_event_supported(type, i))
1312                         continue;
1313
1314                 if (name_only) {
1315                         printf("%s ", syms->symbol);
1316                         continue;
1317                 }
1318
1319                 if (strlen(syms->alias))
1320                         snprintf(name, MAX_NAME_LEN, "%s OR %s", syms->symbol, syms->alias);
1321                 else
1322                         strncpy(name, syms->symbol, MAX_NAME_LEN);
1323
1324                 printf("  %-50s [%s]\n", name, event_type_descriptors[type]);
1325
1326                 printed++;
1327         }
1328
1329         if (printed)
1330                 printf("\n");
1331 }
1332
1333 /*
1334  * Print the help text for the event symbols:
1335  */
1336 void print_events(const char *event_glob, bool name_only)
1337 {
1338         if (!name_only) {
1339                 printf("\n");
1340                 printf("List of pre-defined events (to be used in -e):\n");
1341         }
1342
1343         print_symbol_events(event_glob, PERF_TYPE_HARDWARE,
1344                             event_symbols_hw, PERF_COUNT_HW_MAX, name_only);
1345
1346         print_symbol_events(event_glob, PERF_TYPE_SOFTWARE,
1347                             event_symbols_sw, PERF_COUNT_SW_MAX, name_only);
1348
1349         print_hwcache_events(event_glob, name_only);
1350
1351         print_pmu_events(event_glob, name_only);
1352
1353         if (event_glob != NULL)
1354                 return;
1355
1356         if (!name_only) {
1357                 printf("  %-50s [%s]\n",
1358                        "rNNN",
1359                        event_type_descriptors[PERF_TYPE_RAW]);
1360                 printf("  %-50s [%s]\n",
1361                        "cpu/t1=v1[,t2=v2,t3 ...]/modifier",
1362                        event_type_descriptors[PERF_TYPE_RAW]);
1363                 printf("   (see 'man perf-list' on how to encode it)\n");
1364                 printf("\n");
1365
1366                 printf("  %-50s [%s]\n",
1367                        "mem:<addr>[:access]",
1368                         event_type_descriptors[PERF_TYPE_BREAKPOINT]);
1369                 printf("\n");
1370         }
1371
1372         print_tracepoint_events(NULL, NULL, name_only);
1373 }
1374
1375 int parse_events__is_hardcoded_term(struct parse_events_term *term)
1376 {
1377         return term->type_term != PARSE_EVENTS__TERM_TYPE_USER;
1378 }
1379
1380 static int new_term(struct parse_events_term **_term, int type_val,
1381                     int type_term, char *config,
1382                     char *str, u64 num)
1383 {
1384         struct parse_events_term *term;
1385
1386         term = zalloc(sizeof(*term));
1387         if (!term)
1388                 return -ENOMEM;
1389
1390         INIT_LIST_HEAD(&term->list);
1391         term->type_val  = type_val;
1392         term->type_term = type_term;
1393         term->config = config;
1394
1395         switch (type_val) {
1396         case PARSE_EVENTS__TERM_TYPE_NUM:
1397                 term->val.num = num;
1398                 break;
1399         case PARSE_EVENTS__TERM_TYPE_STR:
1400                 term->val.str = str;
1401                 break;
1402         default:
1403                 free(term);
1404                 return -EINVAL;
1405         }
1406
1407         *_term = term;
1408         return 0;
1409 }
1410
1411 int parse_events_term__num(struct parse_events_term **term,
1412                            int type_term, char *config, u64 num)
1413 {
1414         return new_term(term, PARSE_EVENTS__TERM_TYPE_NUM, type_term,
1415                         config, NULL, num);
1416 }
1417
1418 int parse_events_term__str(struct parse_events_term **term,
1419                            int type_term, char *config, char *str)
1420 {
1421         return new_term(term, PARSE_EVENTS__TERM_TYPE_STR, type_term,
1422                         config, str, 0);
1423 }
1424
1425 int parse_events_term__sym_hw(struct parse_events_term **term,
1426                               char *config, unsigned idx)
1427 {
1428         struct event_symbol *sym;
1429
1430         BUG_ON(idx >= PERF_COUNT_HW_MAX);
1431         sym = &event_symbols_hw[idx];
1432
1433         if (config)
1434                 return new_term(term, PARSE_EVENTS__TERM_TYPE_STR,
1435                                 PARSE_EVENTS__TERM_TYPE_USER, config,
1436                                 (char *) sym->symbol, 0);
1437         else
1438                 return new_term(term, PARSE_EVENTS__TERM_TYPE_STR,
1439                                 PARSE_EVENTS__TERM_TYPE_USER,
1440                                 (char *) "event", (char *) sym->symbol, 0);
1441 }
1442
1443 int parse_events_term__clone(struct parse_events_term **new,
1444                              struct parse_events_term *term)
1445 {
1446         return new_term(new, term->type_val, term->type_term, term->config,
1447                         term->val.str, term->val.num);
1448 }
1449
1450 void parse_events__free_terms(struct list_head *terms)
1451 {
1452         struct parse_events_term *term, *h;
1453
1454         list_for_each_entry_safe(term, h, terms, list)
1455                 free(term);
1456 }