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                 evsel->per_pkg = info.per_pkg;
 685                 evsel->snapshot = info.snapshot;
 686         }
 687
 688         return evsel ? 0 : -ENOMEM;
 689 }
 690
 691 int parse_events__modifier_group(struct list_head *list,
 692                                  char *event_mod)
 693 {
 694         return parse_events__modifier_event(list, event_mod, true);
 695 }
 696
 697 void parse_events__set_leader(char *name, struct list_head *list)
 698 {
 699         struct perf_evsel *leader;
 700
 701         __perf_evlist__set_leader(list);
 702         leader = list_entry(list->next, struct perf_evsel, node);
 703         leader->group_name = name ? strdup(name) : NULL;
 704 }
 705
 706 /* list_event is assumed to point to malloc'ed memory */
 707 void parse_events_update_lists(struct list_head *list_event,
 708                                struct list_head *list_all)
 709 {
 710         /*
 711          * Called for single event definition. Update the
 712          * 'all event' list, and reinit the 'single event'
 713          * list, for next event definition.
 714          */
 715         list_splice_tail(list_event, list_all);
 716         free(list_event);
 717 }
 718
 719 struct event_modifier {
 720         int eu;
 721         int ek;
 722         int eh;
 723         int eH;
 724         int eG;
 725         int precise;
 726         int exclude_GH;
 727         int sample_read;
 728         int pinned;
 729 };
 730
 731 static int get_event_modifier(struct event_modifier *mod, char *str,
 732                                struct perf_evsel *evsel)
 733 {
 734         int eu = evsel ? evsel->attr.exclude_user : 0;
 735         int ek = evsel ? evsel->attr.exclude_kernel : 0;
 736         int eh = evsel ? evsel->attr.exclude_hv : 0;
 737         int eH = evsel ? evsel->attr.exclude_host : 0;
 738         int eG = evsel ? evsel->attr.exclude_guest : 0;
 739         int precise = evsel ? evsel->attr.precise_ip : 0;
 740         int sample_read = 0;
 741         int pinned = evsel ? evsel->attr.pinned : 0;
 742
 743         int exclude = eu | ek | eh;
 744         int exclude_GH = evsel ? evsel->exclude_GH : 0;
 745
 746         memset(mod, 0, sizeof(*mod));
 747
 748         while (*str) {
 749                 if (*str == 'u') {
 750                         if (!exclude)
 751                                 exclude = eu = ek = eh = 1;
 752                         eu = 0;
 753                 } else if (*str == 'k') {
 754                         if (!exclude)
 755                                 exclude = eu = ek = eh = 1;
 756                         ek = 0;
 757                 } else if (*str == 'h') {
 758                         if (!exclude)
 759                                 exclude = eu = ek = eh = 1;
 760                         eh = 0;
 761                 } else if (*str == 'G') {
 762                         if (!exclude_GH)
 763                                 exclude_GH = eG = eH = 1;
 764                         eG = 0;
 765                 } else if (*str == 'H') {
 766                         if (!exclude_GH)
 767                                 exclude_GH = eG = eH = 1;
 768                         eH = 0;
 769                 } else if (*str == 'p') {
 770                         precise++;
 771                         /* use of precise requires exclude_guest */
 772                         if (!exclude_GH)
 773                                 eG = 1;
 774                 } else if (*str == 'S') {
 775                         sample_read = 1;
 776                 } else if (*str == 'D') {
 777                         pinned = 1;
 778                 } else
 779                         break;
 780
 781                 ++str;
 782         }
 783
 784         /*
 785          * precise ip:
 786          *
 787          *  0 - SAMPLE_IP can have arbitrary skid
 788          *  1 - SAMPLE_IP must have constant skid
 789          *  2 - SAMPLE_IP requested to have 0 skid
 790          *  3 - SAMPLE_IP must have 0 skid
 791          *
 792          *  See also PERF_RECORD_MISC_EXACT_IP
 793          */
 794         if (precise > 3)
 795                 return -EINVAL;
 796
 797         mod->eu = eu;
 798         mod->ek = ek;
 799         mod->eh = eh;
 800         mod->eH = eH;
 801         mod->eG = eG;
 802         mod->precise = precise;
 803         mod->exclude_GH = exclude_GH;
 804         mod->sample_read = sample_read;
 805         mod->pinned = pinned;
 806
 807         return 0;
 808 }
 809
 810 /*
 811  * Basic modifier sanity check to validate it contains only one
 812  * instance of any modifier (apart from 'p') present.
 813  */
 814 static int check_modifier(char *str)
 815 {
 816         char *p = str;
 817
 818         /* The sizeof includes 0 byte as well. */
 819         if (strlen(str) > (sizeof("ukhGHpppSD") - 1))
 820                 return -1;
 821
 822         while (*p) {
 823                 if (*p != 'p' && strchr(p + 1, *p))
 824                         return -1;
 825                 p++;
 826         }
 827
 828         return 0;
 829 }
 830
 831 int parse_events__modifier_event(struct list_head *list, char *str, bool add)
 832 {
 833         struct perf_evsel *evsel;
 834         struct event_modifier mod;
 835
 836         if (str == NULL)
 837                 return 0;
 838
 839         if (check_modifier(str))
 840                 return -EINVAL;
 841
 842         if (!add && get_event_modifier(&mod, str, NULL))
 843                 return -EINVAL;
 844
 845         __evlist__for_each(list, evsel) {
 846                 if (add && get_event_modifier(&mod, str, evsel))
 847                         return -EINVAL;
 848
 849                 evsel->attr.exclude_user   = mod.eu;
 850                 evsel->attr.exclude_kernel = mod.ek;
 851                 evsel->attr.exclude_hv     = mod.eh;
 852                 evsel->attr.precise_ip     = mod.precise;
 853                 evsel->attr.exclude_host   = mod.eH;
 854                 evsel->attr.exclude_guest  = mod.eG;
 855                 evsel->exclude_GH          = mod.exclude_GH;
 856                 evsel->sample_read         = mod.sample_read;
 857
 858                 if (perf_evsel__is_group_leader(evsel))
 859                         evsel->attr.pinned = mod.pinned;
 860         }
 861
 862         return 0;
 863 }
 864
 865 int parse_events_name(struct list_head *list, char *name)
 866 {
 867         struct perf_evsel *evsel;
 868
 869         __evlist__for_each(list, evsel) {
 870                 if (!evsel->name)
 871                         evsel->name = strdup(name);
 872         }
 873
 874         return 0;
 875 }
 876
 877 static int
 878 comp_pmu(const void *p1, const void *p2)
 879 {
 880         struct perf_pmu_event_symbol *pmu1 = (struct perf_pmu_event_symbol *) p1;
 881         struct perf_pmu_event_symbol *pmu2 = (struct perf_pmu_event_symbol *) p2;
 882
 883         return strcmp(pmu1->symbol, pmu2->symbol);
 884 }
 885
 886 static void perf_pmu__parse_cleanup(void)
 887 {
 888         if (perf_pmu_events_list_num > 0) {
 889                 struct perf_pmu_event_symbol *p;
 890                 int i;
 891
 892                 for (i = 0; i < perf_pmu_events_list_num; i++) {
 893                         p = perf_pmu_events_list + i;
 894                         free(p->symbol);
 895                 }
 896                 free(perf_pmu_events_list);
 897                 perf_pmu_events_list = NULL;
 898                 perf_pmu_events_list_num = 0;
 899         }
 900 }
 901
 902 #define SET_SYMBOL(str, stype)          \
 903 do {                                    \
 904         p->symbol = str;                \
 905         if (!p->symbol)                 \
 906                 goto err;               \
 907         p->type = stype;                \
 908 } while (0)
 909
 910 /*
 911  * Read the pmu events list from sysfs
 912  * Save it into perf_pmu_events_list
 913  */
 914 static void perf_pmu__parse_init(void)
 915 {
 916
 917         struct perf_pmu *pmu = NULL;
 918         struct perf_pmu_alias *alias;
 919         int len = 0;
 920
 921         pmu = perf_pmu__find("cpu");
 922         if ((pmu == NULL) || list_empty(&pmu->aliases)) {
 923                 perf_pmu_events_list_num = -1;
 924                 return;
 925         }
 926         list_for_each_entry(alias, &pmu->aliases, list) {
 927                 if (strchr(alias->name, '-'))
 928                         len++;
 929                 len++;
 930         }
 931         perf_pmu_events_list = malloc(sizeof(struct perf_pmu_event_symbol) * len);
 932         if (!perf_pmu_events_list)
 933                 return;
 934         perf_pmu_events_list_num = len;
 935
 936         len = 0;
 937         list_for_each_entry(alias, &pmu->aliases, list) {
 938                 struct perf_pmu_event_symbol *p = perf_pmu_events_list + len;
 939                 char *tmp = strchr(alias->name, '-');
 940
 941                 if (tmp != NULL) {
 942                         SET_SYMBOL(strndup(alias->name, tmp - alias->name),
 943                                         PMU_EVENT_SYMBOL_PREFIX);
 944                         p++;
 945                         SET_SYMBOL(strdup(++tmp), PMU_EVENT_SYMBOL_SUFFIX);
 946                         len += 2;
 947                 } else {
 948                         SET_SYMBOL(strdup(alias->name), PMU_EVENT_SYMBOL);
 949                         len++;
 950                 }
 951         }
 952         qsort(perf_pmu_events_list, len,
 953                 sizeof(struct perf_pmu_event_symbol), comp_pmu);
 954
 955         return;
 956 err:
 957         perf_pmu__parse_cleanup();
 958 }
 959
 960 enum perf_pmu_event_symbol_type
 961 perf_pmu__parse_check(const char *name)
 962 {
 963         struct perf_pmu_event_symbol p, *r;
 964
 965         /* scan kernel pmu events from sysfs if needed */
 966         if (perf_pmu_events_list_num == 0)
 967                 perf_pmu__parse_init();
 968         /*
 969          * name "cpu" could be prefix of cpu-cycles or cpu// events.
 970          * cpu-cycles has been handled by hardcode.
 971          * So it must be cpu// events, not kernel pmu event.
 972          */
 973         if ((perf_pmu_events_list_num <= 0) || !strcmp(name, "cpu"))
 974                 return PMU_EVENT_SYMBOL_ERR;
 975
 976         p.symbol = strdup(name);
 977         r = bsearch(&p, perf_pmu_events_list,
 978                         (size_t) perf_pmu_events_list_num,
 979                         sizeof(struct perf_pmu_event_symbol), comp_pmu);
 980         free(p.symbol);
 981         return r ? r->type : PMU_EVENT_SYMBOL_ERR;
 982 }
 983
 984 static int parse_events__scanner(const char *str, void *data, int start_token)
 985 {
 986         YY_BUFFER_STATE buffer;
 987         void *scanner;
 988         int ret;
 989
 990         ret = parse_events_lex_init_extra(start_token, &scanner);
 991         if (ret)
 992                 return ret;
 993
 994         buffer = parse_events__scan_string(str, scanner);
 995
 996 #ifdef PARSER_DEBUG
 997         parse_events_debug = 1;
 998 #endif
 999         ret = parse_events_parse(data, scanner);
1000
1001         parse_events__flush_buffer(buffer, scanner);
1002         parse_events__delete_buffer(buffer, scanner);
1003         parse_events_lex_destroy(scanner);
1004         return ret;
1005 }
1006
1007 /*
1008  * parse event config string, return a list of event terms.
1009  */
1010 int parse_events_terms(struct list_head *terms, const char *str)
1011 {
1012         struct parse_events_terms data = {
1013                 .terms = NULL,
1014         };
1015         int ret;
1016
1017         ret = parse_events__scanner(str, &data, PE_START_TERMS);
1018         if (!ret) {
1019                 list_splice(data.terms, terms);
1020                 zfree(&data.terms);
1021                 return 0;
1022         }
1023
1024         if (data.terms)
1025                 parse_events__free_terms(data.terms);
1026         return ret;
1027 }
1028
1029 int parse_events(struct perf_evlist *evlist, const char *str)
1030 {
1031         struct parse_events_evlist data = {
1032                 .list = LIST_HEAD_INIT(data.list),
1033                 .idx  = evlist->nr_entries,
1034         };
1035         int ret;
1036
1037         ret = parse_events__scanner(str, &data, PE_START_EVENTS);
1038         perf_pmu__parse_cleanup();
1039         if (!ret) {
1040                 int entries = data.idx - evlist->nr_entries;
1041                 perf_evlist__splice_list_tail(evlist, &data.list, entries);
1042                 evlist->nr_groups += data.nr_groups;
1043                 return 0;
1044         }
1045
1046         /*
1047          * There are 2 users - builtin-record and builtin-test objects.
1048          * Both call perf_evlist__delete in case of error, so we dont
1049          * need to bother.
1050          */
1051         return ret;
1052 }
1053
1054 int parse_events_option(const struct option *opt, const char *str,
1055                         int unset __maybe_unused)
1056 {
1057         struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
1058         int ret = parse_events(evlist, str);
1059
1060         if (ret) {
1061                 fprintf(stderr, "invalid or unsupported event: '%s'\n", str);
1062                 fprintf(stderr, "Run 'perf list' for a list of valid events\n");
1063         }
1064         return ret;
1065 }
1066
1067 int parse_filter(const struct option *opt, const char *str,
1068                  int unset __maybe_unused)
1069 {
1070         struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
1071         struct perf_evsel *last = NULL;
1072
1073         if (evlist->nr_entries > 0)
1074                 last = perf_evlist__last(evlist);
1075
1076         if (last == NULL || last->attr.type != PERF_TYPE_TRACEPOINT) {
1077                 fprintf(stderr,
1078                         "--filter option should follow a -e tracepoint option\n");
1079                 return -1;
1080         }
1081
1082         last->filter = strdup(str);
1083         if (last->filter == NULL) {
1084                 fprintf(stderr, "not enough memory to hold filter string\n");
1085                 return -1;
1086         }
1087
1088         return 0;
1089 }
1090
1091 static const char * const event_type_descriptors[] = {
1092         "Hardware event",
1093         "Software event",
1094         "Tracepoint event",
1095         "Hardware cache event",
1096         "Raw hardware event descriptor",
1097         "Hardware breakpoint",
1098 };
1099
1100 /*
1101  * Print the events from <debugfs_mount_point>/tracing/events
1102  */
1103
1104 void print_tracepoint_events(const char *subsys_glob, const char *event_glob,
1105                              bool name_only)
1106 {
1107         DIR *sys_dir, *evt_dir;
1108         struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
1109         char evt_path[MAXPATHLEN];
1110         char dir_path[MAXPATHLEN];
1111         char sbuf[STRERR_BUFSIZE];
1112
1113         if (debugfs_valid_mountpoint(tracing_events_path)) {
1114                 printf("  [ Tracepoints not available: %s ]\n",
1115                         strerror_r(errno, sbuf, sizeof(sbuf)));
1116                 return;
1117         }
1118
1119         sys_dir = opendir(tracing_events_path);
1120         if (!sys_dir)
1121                 return;
1122
1123         for_each_subsystem(sys_dir, sys_dirent, sys_next) {
1124                 if (subsys_glob != NULL &&
1125                     !strglobmatch(sys_dirent.d_name, subsys_glob))
1126                         continue;
1127
1128                 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
1129                          sys_dirent.d_name);
1130                 evt_dir = opendir(dir_path);
1131                 if (!evt_dir)
1132                         continue;
1133
1134                 for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
1135                         if (event_glob != NULL &&
1136                             !strglobmatch(evt_dirent.d_name, event_glob))
1137                                 continue;
1138
1139                         if (name_only) {
1140                                 printf("%s:%s ", sys_dirent.d_name, evt_dirent.d_name);
1141                                 continue;
1142                         }
1143
1144                         snprintf(evt_path, MAXPATHLEN, "%s:%s",
1145                                  sys_dirent.d_name, evt_dirent.d_name);
1146                         printf("  %-50s [%s]\n", evt_path,
1147                                 event_type_descriptors[PERF_TYPE_TRACEPOINT]);
1148                 }
1149                 closedir(evt_dir);
1150         }
1151         closedir(sys_dir);
1152 }
1153
1154 /*
1155  * Check whether event is in <debugfs_mount_point>/tracing/events
1156  */
1157
1158 int is_valid_tracepoint(const char *event_string)
1159 {
1160         DIR *sys_dir, *evt_dir;
1161         struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
1162         char evt_path[MAXPATHLEN];
1163         char dir_path[MAXPATHLEN];
1164
1165         if (debugfs_valid_mountpoint(tracing_events_path))
1166                 return 0;
1167
1168         sys_dir = opendir(tracing_events_path);
1169         if (!sys_dir)
1170                 return 0;
1171
1172         for_each_subsystem(sys_dir, sys_dirent, sys_next) {
1173
1174                 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
1175                          sys_dirent.d_name);
1176                 evt_dir = opendir(dir_path);
1177                 if (!evt_dir)
1178                         continue;
1179
1180                 for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
1181                         snprintf(evt_path, MAXPATHLEN, "%s:%s",
1182                                  sys_dirent.d_name, evt_dirent.d_name);
1183                         if (!strcmp(evt_path, event_string)) {
1184                                 closedir(evt_dir);
1185                                 closedir(sys_dir);
1186                                 return 1;
1187                         }
1188                 }
1189                 closedir(evt_dir);
1190         }
1191         closedir(sys_dir);
1192         return 0;
1193 }
1194
1195 static bool is_event_supported(u8 type, unsigned config)
1196 {
1197         bool ret = true;
1198         int open_return;
1199         struct perf_evsel *evsel;
1200         struct perf_event_attr attr = {
1201                 .type = type,
1202                 .config = config,
1203                 .disabled = 1,
1204         };
1205         struct {
1206                 struct thread_map map;
1207                 int threads[1];
1208         } tmap = {
1209                 .map.nr  = 1,
1210                 .threads = { 0 },
1211         };
1212
1213         evsel = perf_evsel__new(&attr);
1214         if (evsel) {
1215                 open_return = perf_evsel__open(evsel, NULL, &tmap.map);
1216                 ret = open_return >= 0;
1217
1218                 if (open_return == -EACCES) {
1219                         /*
1220                          * This happens if the paranoid value
1221                          * /proc/sys/kernel/perf_event_paranoid is set to 2
1222                          * Re-run with exclude_kernel set; we don't do that
1223                          * by default as some ARM machines do not support it.
1224                          *
1225                          */
1226                         evsel->attr.exclude_kernel = 1;
1227                         ret = perf_evsel__open(evsel, NULL, &tmap.map) >= 0;
1228                 }
1229                 perf_evsel__delete(evsel);
1230         }
1231
1232         return ret;
1233 }
1234
1235 static void __print_events_type(u8 type, struct event_symbol *syms,
1236                                 unsigned max)
1237 {
1238         char name[64];
1239         unsigned i;
1240
1241         for (i = 0; i < max ; i++, syms++) {
1242                 if (!is_event_supported(type, i))
1243                         continue;
1244
1245                 if (strlen(syms->alias))
1246                         snprintf(name, sizeof(name),  "%s OR %s",
1247                                  syms->symbol, syms->alias);
1248                 else
1249                         snprintf(name, sizeof(name), "%s", syms->symbol);
1250
1251                 printf("  %-50s [%s]\n", name, event_type_descriptors[type]);
1252         }
1253 }
1254
1255 void print_events_type(u8 type)
1256 {
1257         if (type == PERF_TYPE_SOFTWARE)
1258                 __print_events_type(type, event_symbols_sw, PERF_COUNT_SW_MAX);
1259         else
1260                 __print_events_type(type, event_symbols_hw, PERF_COUNT_HW_MAX);
1261 }
1262
1263 int print_hwcache_events(const char *event_glob, bool name_only)
1264 {
1265         unsigned int type, op, i, printed = 0;
1266         char name[64];
1267
1268         for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) {
1269                 for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) {
1270                         /* skip invalid cache type */
1271                         if (!perf_evsel__is_cache_op_valid(type, op))
1272                                 continue;
1273
1274                         for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) {
1275                                 __perf_evsel__hw_cache_type_op_res_name(type, op, i,
1276                                                                         name, sizeof(name));
1277                                 if (event_glob != NULL && !strglobmatch(name, event_glob))
1278                                         continue;
1279
1280                                 if (!is_event_supported(PERF_TYPE_HW_CACHE,
1281                                                         type | (op << 8) | (i << 16)))
1282                                         continue;
1283
1284                                 if (name_only)
1285                                         printf("%s ", name);
1286                                 else
1287                                         printf("  %-50s [%s]\n", name,
1288                                                event_type_descriptors[PERF_TYPE_HW_CACHE]);
1289                                 ++printed;
1290                         }
1291                 }
1292         }
1293
1294         if (printed)
1295                 printf("\n");
1296         return printed;
1297 }
1298
1299 static void print_symbol_events(const char *event_glob, unsigned type,
1300                                 struct event_symbol *syms, unsigned max,
1301                                 bool name_only)
1302 {
1303         unsigned i, printed = 0;
1304         char name[MAX_NAME_LEN];
1305
1306         for (i = 0; i < max; i++, syms++) {
1307
1308                 if (event_glob != NULL &&
1309                     !(strglobmatch(syms->symbol, event_glob) ||
1310                       (syms->alias && strglobmatch(syms->alias, event_glob))))
1311                         continue;
1312
1313                 if (!is_event_supported(type, i))
1314                         continue;
1315
1316                 if (name_only) {
1317                         printf("%s ", syms->symbol);
1318                         continue;
1319                 }
1320
1321                 if (strlen(syms->alias))
1322                         snprintf(name, MAX_NAME_LEN, "%s OR %s", syms->symbol, syms->alias);
1323                 else
1324                         strncpy(name, syms->symbol, MAX_NAME_LEN);
1325
1326                 printf("  %-50s [%s]\n", name, event_type_descriptors[type]);
1327
1328                 printed++;
1329         }
1330
1331         if (printed)
1332                 printf("\n");
1333 }
1334
1335 /*
1336  * Print the help text for the event symbols:
1337  */
1338 void print_events(const char *event_glob, bool name_only)
1339 {
1340         if (!name_only) {
1341                 printf("\n");
1342                 printf("List of pre-defined events (to be used in -e):\n");
1343         }
1344
1345         print_symbol_events(event_glob, PERF_TYPE_HARDWARE,
1346                             event_symbols_hw, PERF_COUNT_HW_MAX, name_only);
1347
1348         print_symbol_events(event_glob, PERF_TYPE_SOFTWARE,
1349                             event_symbols_sw, PERF_COUNT_SW_MAX, name_only);
1350
1351         print_hwcache_events(event_glob, name_only);
1352
1353         print_pmu_events(event_glob, name_only);
1354
1355         if (event_glob != NULL)
1356                 return;
1357
1358         if (!name_only) {
1359                 printf("  %-50s [%s]\n",
1360                        "rNNN",
1361                        event_type_descriptors[PERF_TYPE_RAW]);
1362                 printf("  %-50s [%s]\n",
1363                        "cpu/t1=v1[,t2=v2,t3 ...]/modifier",
1364                        event_type_descriptors[PERF_TYPE_RAW]);
1365                 printf("   (see 'man perf-list' on how to encode it)\n");
1366                 printf("\n");
1367
1368                 printf("  %-50s [%s]\n",
1369                        "mem:<addr>[:access]",
1370                         event_type_descriptors[PERF_TYPE_BREAKPOINT]);
1371                 printf("\n");
1372         }
1373
1374         print_tracepoint_events(NULL, NULL, name_only);
1375 }
1376
1377 int parse_events__is_hardcoded_term(struct parse_events_term *term)
1378 {
1379         return term->type_term != PARSE_EVENTS__TERM_TYPE_USER;
1380 }
1381
1382 static int new_term(struct parse_events_term **_term, int type_val,
1383                     int type_term, char *config,
1384                     char *str, u64 num)
1385 {
1386         struct parse_events_term *term;
1387
1388         term = zalloc(sizeof(*term));
1389         if (!term)
1390                 return -ENOMEM;
1391
1392         INIT_LIST_HEAD(&term->list);
1393         term->type_val  = type_val;
1394         term->type_term = type_term;
1395         term->config = config;
1396
1397         switch (type_val) {
1398         case PARSE_EVENTS__TERM_TYPE_NUM:
1399                 term->val.num = num;
1400                 break;
1401         case PARSE_EVENTS__TERM_TYPE_STR:
1402                 term->val.str = str;
1403                 break;
1404         default:
1405                 free(term);
1406                 return -EINVAL;
1407         }
1408
1409         *_term = term;
1410         return 0;
1411 }
1412
1413 int parse_events_term__num(struct parse_events_term **term,
1414                            int type_term, char *config, u64 num)
1415 {
1416         return new_term(term, PARSE_EVENTS__TERM_TYPE_NUM, type_term,
1417                         config, NULL, num);
1418 }
1419
1420 int parse_events_term__str(struct parse_events_term **term,
1421                            int type_term, char *config, char *str)
1422 {
1423         return new_term(term, PARSE_EVENTS__TERM_TYPE_STR, type_term,
1424                         config, str, 0);
1425 }
1426
1427 int parse_events_term__sym_hw(struct parse_events_term **term,
1428                               char *config, unsigned idx)
1429 {
1430         struct event_symbol *sym;
1431
1432         BUG_ON(idx >= PERF_COUNT_HW_MAX);
1433         sym = &event_symbols_hw[idx];
1434
1435         if (config)
1436                 return new_term(term, PARSE_EVENTS__TERM_TYPE_STR,
1437                                 PARSE_EVENTS__TERM_TYPE_USER, config,
1438                                 (char *) sym->symbol, 0);
1439         else
1440                 return new_term(term, PARSE_EVENTS__TERM_TYPE_STR,
1441                                 PARSE_EVENTS__TERM_TYPE_USER,
1442                                 (char *) "event", (char *) sym->symbol, 0);
1443 }
1444
1445 int parse_events_term__clone(struct parse_events_term **new,
1446                              struct parse_events_term *term)
1447 {
1448         return new_term(new, term->type_val, term->type_term, term->config,
1449                         term->val.str, term->val.num);
1450 }
1451
1452 void parse_events__free_terms(struct list_head *terms)
1453 {
1454         struct parse_events_term *term, *h;
1455
1456         list_for_each_entry_safe(term, h, terms, list)
1457                 free(term);
1458 }