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, u64 len)
 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         /* Provide some defaults if len is not specified */
 540         if (!len) {
 541                 if (attr.bp_type == HW_BREAKPOINT_X)
 542                         len = sizeof(long);
 543                 else
 544                         len = HW_BREAKPOINT_LEN_4;
 545         }
 546
 547         attr.bp_len = len;
 548
 549         attr.type = PERF_TYPE_BREAKPOINT;
 550         attr.sample_period = 1;
 551
 552         return add_event(list, idx, &attr, NULL);
 553 }
 554
 555 static int config_term(struct perf_event_attr *attr,
 556                        struct parse_events_term *term)
 557 {
 558 #define CHECK_TYPE_VAL(type)                                    \
 559 do {                                                            \
 560         if (PARSE_EVENTS__TERM_TYPE_ ## type != term->type_val) \
 561                 return -EINVAL;                                 \
 562 } while (0)
 563
 564         switch (term->type_term) {
 565         case PARSE_EVENTS__TERM_TYPE_CONFIG:
 566                 CHECK_TYPE_VAL(NUM);
 567                 attr->config = term->val.num;
 568                 break;
 569         case PARSE_EVENTS__TERM_TYPE_CONFIG1:
 570                 CHECK_TYPE_VAL(NUM);
 571                 attr->config1 = term->val.num;
 572                 break;
 573         case PARSE_EVENTS__TERM_TYPE_CONFIG2:
 574                 CHECK_TYPE_VAL(NUM);
 575                 attr->config2 = term->val.num;
 576                 break;
 577         case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
 578                 CHECK_TYPE_VAL(NUM);
 579                 attr->sample_period = term->val.num;
 580                 break;
 581         case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
 582                 /*
 583                  * TODO uncomment when the field is available
 584                  * attr->branch_sample_type = term->val.num;
 585                  */
 586                 break;
 587         case PARSE_EVENTS__TERM_TYPE_NAME:
 588                 CHECK_TYPE_VAL(STR);
 589                 break;
 590         default:
 591                 return -EINVAL;
 592         }
 593
 594         return 0;
 595 #undef CHECK_TYPE_VAL
 596 }
 597
 598 static int config_attr(struct perf_event_attr *attr,
 599                        struct list_head *head, int fail)
 600 {
 601         struct parse_events_term *term;
 602
 603         list_for_each_entry(term, head, list)
 604                 if (config_term(attr, term) && fail)
 605                         return -EINVAL;
 606
 607         return 0;
 608 }
 609
 610 int parse_events_add_numeric(struct list_head *list, int *idx,
 611                              u32 type, u64 config,
 612                              struct list_head *head_config)
 613 {
 614         struct perf_event_attr attr;
 615
 616         memset(&attr, 0, sizeof(attr));
 617         attr.type = type;
 618         attr.config = config;
 619
 620         if (head_config &&
 621             config_attr(&attr, head_config, 1))
 622                 return -EINVAL;
 623
 624         return add_event(list, idx, &attr, NULL);
 625 }
 626
 627 static int parse_events__is_name_term(struct parse_events_term *term)
 628 {
 629         return term->type_term == PARSE_EVENTS__TERM_TYPE_NAME;
 630 }
 631
 632 static char *pmu_event_name(struct list_head *head_terms)
 633 {
 634         struct parse_events_term *term;
 635
 636         list_for_each_entry(term, head_terms, list)
 637                 if (parse_events__is_name_term(term))
 638                         return term->val.str;
 639
 640         return NULL;
 641 }
 642
 643 int parse_events_add_pmu(struct list_head *list, int *idx,
 644                          char *name, struct list_head *head_config)
 645 {
 646         struct perf_event_attr attr;
 647         struct perf_pmu_info info;
 648         struct perf_pmu *pmu;
 649         struct perf_evsel *evsel;
 650
 651         pmu = perf_pmu__find(name);
 652         if (!pmu)
 653                 return -EINVAL;
 654
 655         if (pmu->default_config) {
 656                 memcpy(&attr, pmu->default_config,
 657                        sizeof(struct perf_event_attr));
 658         } else {
 659                 memset(&attr, 0, sizeof(attr));
 660         }
 661
 662         if (!head_config) {
 663                 attr.type = pmu->type;
 664                 evsel = __add_event(list, idx, &attr, NULL, pmu->cpus);
 665                 return evsel ? 0 : -ENOMEM;
 666         }
 667
 668         if (perf_pmu__check_alias(pmu, head_config, &info))
 669                 return -EINVAL;
 670
 671         /*
 672          * Configure hardcoded terms first, no need to check
 673          * return value when called with fail == 0 ;)
 674          */
 675         config_attr(&attr, head_config, 0);
 676
 677         if (perf_pmu__config(pmu, &attr, head_config))
 678                 return -EINVAL;
 679
 680         evsel = __add_event(list, idx, &attr, pmu_event_name(head_config),
 681                             pmu->cpus);
 682         if (evsel) {
 683                 evsel->unit = info.unit;
 684                 evsel->scale = info.scale;
 685                 evsel->per_pkg = info.per_pkg;
 686                 evsel->snapshot = info.snapshot;
 687         }
 688
 689         return evsel ? 0 : -ENOMEM;
 690 }
 691
 692 int parse_events__modifier_group(struct list_head *list,
 693                                  char *event_mod)
 694 {
 695         return parse_events__modifier_event(list, event_mod, true);
 696 }
 697
 698 void parse_events__set_leader(char *name, struct list_head *list)
 699 {
 700         struct perf_evsel *leader;
 701
 702         __perf_evlist__set_leader(list);
 703         leader = list_entry(list->next, struct perf_evsel, node);
 704         leader->group_name = name ? strdup(name) : NULL;
 705 }
 706
 707 /* list_event is assumed to point to malloc'ed memory */
 708 void parse_events_update_lists(struct list_head *list_event,
 709                                struct list_head *list_all)
 710 {
 711         /*
 712          * Called for single event definition. Update the
 713          * 'all event' list, and reinit the 'single event'
 714          * list, for next event definition.
 715          */
 716         list_splice_tail(list_event, list_all);
 717         free(list_event);
 718 }
 719
 720 struct event_modifier {
 721         int eu;
 722         int ek;
 723         int eh;
 724         int eH;
 725         int eG;
 726         int precise;
 727         int exclude_GH;
 728         int sample_read;
 729         int pinned;
 730 };
 731
 732 static int get_event_modifier(struct event_modifier *mod, char *str,
 733                                struct perf_evsel *evsel)
 734 {
 735         int eu = evsel ? evsel->attr.exclude_user : 0;
 736         int ek = evsel ? evsel->attr.exclude_kernel : 0;
 737         int eh = evsel ? evsel->attr.exclude_hv : 0;
 738         int eH = evsel ? evsel->attr.exclude_host : 0;
 739         int eG = evsel ? evsel->attr.exclude_guest : 0;
 740         int precise = evsel ? evsel->attr.precise_ip : 0;
 741         int sample_read = 0;
 742         int pinned = evsel ? evsel->attr.pinned : 0;
 743
 744         int exclude = eu | ek | eh;
 745         int exclude_GH = evsel ? evsel->exclude_GH : 0;
 746
 747         memset(mod, 0, sizeof(*mod));
 748
 749         while (*str) {
 750                 if (*str == 'u') {
 751                         if (!exclude)
 752                                 exclude = eu = ek = eh = 1;
 753                         eu = 0;
 754                 } else if (*str == 'k') {
 755                         if (!exclude)
 756                                 exclude = eu = ek = eh = 1;
 757                         ek = 0;
 758                 } else if (*str == 'h') {
 759                         if (!exclude)
 760                                 exclude = eu = ek = eh = 1;
 761                         eh = 0;
 762                 } else if (*str == 'G') {
 763                         if (!exclude_GH)
 764                                 exclude_GH = eG = eH = 1;
 765                         eG = 0;
 766                 } else if (*str == 'H') {
 767                         if (!exclude_GH)
 768                                 exclude_GH = eG = eH = 1;
 769                         eH = 0;
 770                 } else if (*str == 'p') {
 771                         precise++;
 772                         /* use of precise requires exclude_guest */
 773                         if (!exclude_GH)
 774                                 eG = 1;
 775                 } else if (*str == 'S') {
 776                         sample_read = 1;
 777                 } else if (*str == 'D') {
 778                         pinned = 1;
 779                 } else
 780                         break;
 781
 782                 ++str;
 783         }
 784
 785         /*
 786          * precise ip:
 787          *
 788          *  0 - SAMPLE_IP can have arbitrary skid
 789          *  1 - SAMPLE_IP must have constant skid
 790          *  2 - SAMPLE_IP requested to have 0 skid
 791          *  3 - SAMPLE_IP must have 0 skid
 792          *
 793          *  See also PERF_RECORD_MISC_EXACT_IP
 794          */
 795         if (precise > 3)
 796                 return -EINVAL;
 797
 798         mod->eu = eu;
 799         mod->ek = ek;
 800         mod->eh = eh;
 801         mod->eH = eH;
 802         mod->eG = eG;
 803         mod->precise = precise;
 804         mod->exclude_GH = exclude_GH;
 805         mod->sample_read = sample_read;
 806         mod->pinned = pinned;
 807
 808         return 0;
 809 }
 810
 811 /*
 812  * Basic modifier sanity check to validate it contains only one
 813  * instance of any modifier (apart from 'p') present.
 814  */
 815 static int check_modifier(char *str)
 816 {
 817         char *p = str;
 818
 819         /* The sizeof includes 0 byte as well. */
 820         if (strlen(str) > (sizeof("ukhGHpppSD") - 1))
 821                 return -1;
 822
 823         while (*p) {
 824                 if (*p != 'p' && strchr(p + 1, *p))
 825                         return -1;
 826                 p++;
 827         }
 828
 829         return 0;
 830 }
 831
 832 int parse_events__modifier_event(struct list_head *list, char *str, bool add)
 833 {
 834         struct perf_evsel *evsel;
 835         struct event_modifier mod;
 836
 837         if (str == NULL)
 838                 return 0;
 839
 840         if (check_modifier(str))
 841                 return -EINVAL;
 842
 843         if (!add && get_event_modifier(&mod, str, NULL))
 844                 return -EINVAL;
 845
 846         __evlist__for_each(list, evsel) {
 847                 if (add && get_event_modifier(&mod, str, evsel))
 848                         return -EINVAL;
 849
 850                 evsel->attr.exclude_user   = mod.eu;
 851                 evsel->attr.exclude_kernel = mod.ek;
 852                 evsel->attr.exclude_hv     = mod.eh;
 853                 evsel->attr.precise_ip     = mod.precise;
 854                 evsel->attr.exclude_host   = mod.eH;
 855                 evsel->attr.exclude_guest  = mod.eG;
 856                 evsel->exclude_GH          = mod.exclude_GH;
 857                 evsel->sample_read         = mod.sample_read;
 858
 859                 if (perf_evsel__is_group_leader(evsel))
 860                         evsel->attr.pinned = mod.pinned;
 861         }
 862
 863         return 0;
 864 }
 865
 866 int parse_events_name(struct list_head *list, char *name)
 867 {
 868         struct perf_evsel *evsel;
 869
 870         __evlist__for_each(list, evsel) {
 871                 if (!evsel->name)
 872                         evsel->name = strdup(name);
 873         }
 874
 875         return 0;
 876 }
 877
 878 static int
 879 comp_pmu(const void *p1, const void *p2)
 880 {
 881         struct perf_pmu_event_symbol *pmu1 = (struct perf_pmu_event_symbol *) p1;
 882         struct perf_pmu_event_symbol *pmu2 = (struct perf_pmu_event_symbol *) p2;
 883
 884         return strcmp(pmu1->symbol, pmu2->symbol);
 885 }
 886
 887 static void perf_pmu__parse_cleanup(void)
 888 {
 889         if (perf_pmu_events_list_num > 0) {
 890                 struct perf_pmu_event_symbol *p;
 891                 int i;
 892
 893                 for (i = 0; i < perf_pmu_events_list_num; i++) {
 894                         p = perf_pmu_events_list + i;
 895                         free(p->symbol);
 896                 }
 897                 free(perf_pmu_events_list);
 898                 perf_pmu_events_list = NULL;
 899                 perf_pmu_events_list_num = 0;
 900         }
 901 }
 902
 903 #define SET_SYMBOL(str, stype)          \
 904 do {                                    \
 905         p->symbol = str;                \
 906         if (!p->symbol)                 \
 907                 goto err;               \
 908         p->type = stype;                \
 909 } while (0)
 910
 911 /*
 912  * Read the pmu events list from sysfs
 913  * Save it into perf_pmu_events_list
 914  */
 915 static void perf_pmu__parse_init(void)
 916 {
 917
 918         struct perf_pmu *pmu = NULL;
 919         struct perf_pmu_alias *alias;
 920         int len = 0;
 921
 922         pmu = perf_pmu__find("cpu");
 923         if ((pmu == NULL) || list_empty(&pmu->aliases)) {
 924                 perf_pmu_events_list_num = -1;
 925                 return;
 926         }
 927         list_for_each_entry(alias, &pmu->aliases, list) {
 928                 if (strchr(alias->name, '-'))
 929                         len++;
 930                 len++;
 931         }
 932         perf_pmu_events_list = malloc(sizeof(struct perf_pmu_event_symbol) * len);
 933         if (!perf_pmu_events_list)
 934                 return;
 935         perf_pmu_events_list_num = len;
 936
 937         len = 0;
 938         list_for_each_entry(alias, &pmu->aliases, list) {
 939                 struct perf_pmu_event_symbol *p = perf_pmu_events_list + len;
 940                 char *tmp = strchr(alias->name, '-');
 941
 942                 if (tmp != NULL) {
 943                         SET_SYMBOL(strndup(alias->name, tmp - alias->name),
 944                                         PMU_EVENT_SYMBOL_PREFIX);
 945                         p++;
 946                         SET_SYMBOL(strdup(++tmp), PMU_EVENT_SYMBOL_SUFFIX);
 947                         len += 2;
 948                 } else {
 949                         SET_SYMBOL(strdup(alias->name), PMU_EVENT_SYMBOL);
 950                         len++;
 951                 }
 952         }
 953         qsort(perf_pmu_events_list, len,
 954                 sizeof(struct perf_pmu_event_symbol), comp_pmu);
 955
 956         return;
 957 err:
 958         perf_pmu__parse_cleanup();
 959 }
 960
 961 enum perf_pmu_event_symbol_type
 962 perf_pmu__parse_check(const char *name)
 963 {
 964         struct perf_pmu_event_symbol p, *r;
 965
 966         /* scan kernel pmu events from sysfs if needed */
 967         if (perf_pmu_events_list_num == 0)
 968                 perf_pmu__parse_init();
 969         /*
 970          * name "cpu" could be prefix of cpu-cycles or cpu// events.
 971          * cpu-cycles has been handled by hardcode.
 972          * So it must be cpu// events, not kernel pmu event.
 973          */
 974         if ((perf_pmu_events_list_num <= 0) || !strcmp(name, "cpu"))
 975                 return PMU_EVENT_SYMBOL_ERR;
 976
 977         p.symbol = strdup(name);
 978         r = bsearch(&p, perf_pmu_events_list,
 979                         (size_t) perf_pmu_events_list_num,
 980                         sizeof(struct perf_pmu_event_symbol), comp_pmu);
 981         free(p.symbol);
 982         return r ? r->type : PMU_EVENT_SYMBOL_ERR;
 983 }
 984
 985 static int parse_events__scanner(const char *str, void *data, int start_token)
 986 {
 987         YY_BUFFER_STATE buffer;
 988         void *scanner;
 989         int ret;
 990
 991         ret = parse_events_lex_init_extra(start_token, &scanner);
 992         if (ret)
 993                 return ret;
 994
 995         buffer = parse_events__scan_string(str, scanner);
 996
 997 #ifdef PARSER_DEBUG
 998         parse_events_debug = 1;
 999 #endif
1000         ret = parse_events_parse(data, scanner);
1001
1002         parse_events__flush_buffer(buffer, scanner);
1003         parse_events__delete_buffer(buffer, scanner);
1004         parse_events_lex_destroy(scanner);
1005         return ret;
1006 }
1007
1008 /*
1009  * parse event config string, return a list of event terms.
1010  */
1011 int parse_events_terms(struct list_head *terms, const char *str)
1012 {
1013         struct parse_events_terms data = {
1014                 .terms = NULL,
1015         };
1016         int ret;
1017
1018         ret = parse_events__scanner(str, &data, PE_START_TERMS);
1019         if (!ret) {
1020                 list_splice(data.terms, terms);
1021                 zfree(&data.terms);
1022                 return 0;
1023         }
1024
1025         if (data.terms)
1026                 parse_events__free_terms(data.terms);
1027         return ret;
1028 }
1029
1030 int parse_events(struct perf_evlist *evlist, const char *str)
1031 {
1032         struct parse_events_evlist data = {
1033                 .list = LIST_HEAD_INIT(data.list),
1034                 .idx  = evlist->nr_entries,
1035         };
1036         int ret;
1037
1038         ret = parse_events__scanner(str, &data, PE_START_EVENTS);
1039         perf_pmu__parse_cleanup();
1040         if (!ret) {
1041                 int entries = data.idx - evlist->nr_entries;
1042                 perf_evlist__splice_list_tail(evlist, &data.list, entries);
1043                 evlist->nr_groups += data.nr_groups;
1044                 return 0;
1045         }
1046
1047         /*
1048          * There are 2 users - builtin-record and builtin-test objects.
1049          * Both call perf_evlist__delete in case of error, so we dont
1050          * need to bother.
1051          */
1052         return ret;
1053 }
1054
1055 int parse_events_option(const struct option *opt, const char *str,
1056                         int unset __maybe_unused)
1057 {
1058         struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
1059         int ret = parse_events(evlist, str);
1060
1061         if (ret) {
1062                 fprintf(stderr, "invalid or unsupported event: '%s'\n", str);
1063                 fprintf(stderr, "Run 'perf list' for a list of valid events\n");
1064         }
1065         return ret;
1066 }
1067
1068 int parse_filter(const struct option *opt, const char *str,
1069                  int unset __maybe_unused)
1070 {
1071         struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
1072         struct perf_evsel *last = NULL;
1073
1074         if (evlist->nr_entries > 0)
1075                 last = perf_evlist__last(evlist);
1076
1077         if (last == NULL || last->attr.type != PERF_TYPE_TRACEPOINT) {
1078                 fprintf(stderr,
1079                         "--filter option should follow a -e tracepoint option\n");
1080                 return -1;
1081         }
1082
1083         last->filter = strdup(str);
1084         if (last->filter == NULL) {
1085                 fprintf(stderr, "not enough memory to hold filter string\n");
1086                 return -1;
1087         }
1088
1089         return 0;
1090 }
1091
1092 static const char * const event_type_descriptors[] = {
1093         "Hardware event",
1094         "Software event",
1095         "Tracepoint event",
1096         "Hardware cache event",
1097         "Raw hardware event descriptor",
1098         "Hardware breakpoint",
1099 };
1100
1101 /*
1102  * Print the events from <debugfs_mount_point>/tracing/events
1103  */
1104
1105 void print_tracepoint_events(const char *subsys_glob, const char *event_glob,
1106                              bool name_only)
1107 {
1108         DIR *sys_dir, *evt_dir;
1109         struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
1110         char evt_path[MAXPATHLEN];
1111         char dir_path[MAXPATHLEN];
1112         char sbuf[STRERR_BUFSIZE];
1113
1114         if (debugfs_valid_mountpoint(tracing_events_path)) {
1115                 printf("  [ Tracepoints not available: %s ]\n",
1116                         strerror_r(errno, sbuf, sizeof(sbuf)));
1117                 return;
1118         }
1119
1120         sys_dir = opendir(tracing_events_path);
1121         if (!sys_dir)
1122                 return;
1123
1124         for_each_subsystem(sys_dir, sys_dirent, sys_next) {
1125                 if (subsys_glob != NULL &&
1126                     !strglobmatch(sys_dirent.d_name, subsys_glob))
1127                         continue;
1128
1129                 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
1130                          sys_dirent.d_name);
1131                 evt_dir = opendir(dir_path);
1132                 if (!evt_dir)
1133                         continue;
1134
1135                 for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
1136                         if (event_glob != NULL &&
1137                             !strglobmatch(evt_dirent.d_name, event_glob))
1138                                 continue;
1139
1140                         if (name_only) {
1141                                 printf("%s:%s ", sys_dirent.d_name, evt_dirent.d_name);
1142                                 continue;
1143                         }
1144
1145                         snprintf(evt_path, MAXPATHLEN, "%s:%s",
1146                                  sys_dirent.d_name, evt_dirent.d_name);
1147                         printf("  %-50s [%s]\n", evt_path,
1148                                 event_type_descriptors[PERF_TYPE_TRACEPOINT]);
1149                 }
1150                 closedir(evt_dir);
1151         }
1152         closedir(sys_dir);
1153 }
1154
1155 /*
1156  * Check whether event is in <debugfs_mount_point>/tracing/events
1157  */
1158
1159 int is_valid_tracepoint(const char *event_string)
1160 {
1161         DIR *sys_dir, *evt_dir;
1162         struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
1163         char evt_path[MAXPATHLEN];
1164         char dir_path[MAXPATHLEN];
1165
1166         if (debugfs_valid_mountpoint(tracing_events_path))
1167                 return 0;
1168
1169         sys_dir = opendir(tracing_events_path);
1170         if (!sys_dir)
1171                 return 0;
1172
1173         for_each_subsystem(sys_dir, sys_dirent, sys_next) {
1174
1175                 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
1176                          sys_dirent.d_name);
1177                 evt_dir = opendir(dir_path);
1178                 if (!evt_dir)
1179                         continue;
1180
1181                 for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
1182                         snprintf(evt_path, MAXPATHLEN, "%s:%s",
1183                                  sys_dirent.d_name, evt_dirent.d_name);
1184                         if (!strcmp(evt_path, event_string)) {
1185                                 closedir(evt_dir);
1186                                 closedir(sys_dir);
1187                                 return 1;
1188                         }
1189                 }
1190                 closedir(evt_dir);
1191         }
1192         closedir(sys_dir);
1193         return 0;
1194 }
1195
1196 static bool is_event_supported(u8 type, unsigned config)
1197 {
1198         bool ret = true;
1199         int open_return;
1200         struct perf_evsel *evsel;
1201         struct perf_event_attr attr = {
1202                 .type = type,
1203                 .config = config,
1204                 .disabled = 1,
1205         };
1206         struct {
1207                 struct thread_map map;
1208                 int threads[1];
1209         } tmap = {
1210                 .map.nr  = 1,
1211                 .threads = { 0 },
1212         };
1213
1214         evsel = perf_evsel__new(&attr);
1215         if (evsel) {
1216                 open_return = perf_evsel__open(evsel, NULL, &tmap.map);
1217                 ret = open_return >= 0;
1218
1219                 if (open_return == -EACCES) {
1220                         /*
1221                          * This happens if the paranoid value
1222                          * /proc/sys/kernel/perf_event_paranoid is set to 2
1223                          * Re-run with exclude_kernel set; we don't do that
1224                          * by default as some ARM machines do not support it.
1225                          *
1226                          */
1227                         evsel->attr.exclude_kernel = 1;
1228                         ret = perf_evsel__open(evsel, NULL, &tmap.map) >= 0;
1229                 }
1230                 perf_evsel__delete(evsel);
1231         }
1232
1233         return ret;
1234 }
1235
1236 static void __print_events_type(u8 type, struct event_symbol *syms,
1237                                 unsigned max)
1238 {
1239         char name[64];
1240         unsigned i;
1241
1242         for (i = 0; i < max ; i++, syms++) {
1243                 if (!is_event_supported(type, i))
1244                         continue;
1245
1246                 if (strlen(syms->alias))
1247                         snprintf(name, sizeof(name),  "%s OR %s",
1248                                  syms->symbol, syms->alias);
1249                 else
1250                         snprintf(name, sizeof(name), "%s", syms->symbol);
1251
1252                 printf("  %-50s [%s]\n", name, event_type_descriptors[type]);
1253         }
1254 }
1255
1256 void print_events_type(u8 type)
1257 {
1258         if (type == PERF_TYPE_SOFTWARE)
1259                 __print_events_type(type, event_symbols_sw, PERF_COUNT_SW_MAX);
1260         else
1261                 __print_events_type(type, event_symbols_hw, PERF_COUNT_HW_MAX);
1262 }
1263
1264 int print_hwcache_events(const char *event_glob, bool name_only)
1265 {
1266         unsigned int type, op, i, printed = 0;
1267         char name[64];
1268
1269         for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) {
1270                 for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) {
1271                         /* skip invalid cache type */
1272                         if (!perf_evsel__is_cache_op_valid(type, op))
1273                                 continue;
1274
1275                         for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) {
1276                                 __perf_evsel__hw_cache_type_op_res_name(type, op, i,
1277                                                                         name, sizeof(name));
1278                                 if (event_glob != NULL && !strglobmatch(name, event_glob))
1279                                         continue;
1280
1281                                 if (!is_event_supported(PERF_TYPE_HW_CACHE,
1282                                                         type | (op << 8) | (i << 16)))
1283                                         continue;
1284
1285                                 if (name_only)
1286                                         printf("%s ", name);
1287                                 else
1288                                         printf("  %-50s [%s]\n", name,
1289                                                event_type_descriptors[PERF_TYPE_HW_CACHE]);
1290                                 ++printed;
1291                         }
1292                 }
1293         }
1294
1295         if (printed)
1296                 printf("\n");
1297         return printed;
1298 }
1299
1300 static void print_symbol_events(const char *event_glob, unsigned type,
1301                                 struct event_symbol *syms, unsigned max,
1302                                 bool name_only)
1303 {
1304         unsigned i, printed = 0;
1305         char name[MAX_NAME_LEN];
1306
1307         for (i = 0; i < max; i++, syms++) {
1308
1309                 if (event_glob != NULL &&
1310                     !(strglobmatch(syms->symbol, event_glob) ||
1311                       (syms->alias && strglobmatch(syms->alias, event_glob))))
1312                         continue;
1313
1314                 if (!is_event_supported(type, i))
1315                         continue;
1316
1317                 if (name_only) {
1318                         printf("%s ", syms->symbol);
1319                         continue;
1320                 }
1321
1322                 if (strlen(syms->alias))
1323                         snprintf(name, MAX_NAME_LEN, "%s OR %s", syms->symbol, syms->alias);
1324                 else
1325                         strncpy(name, syms->symbol, MAX_NAME_LEN);
1326
1327                 printf("  %-50s [%s]\n", name, event_type_descriptors[type]);
1328
1329                 printed++;
1330         }
1331
1332         if (printed)
1333                 printf("\n");
1334 }
1335
1336 /*
1337  * Print the help text for the event symbols:
1338  */
1339 void print_events(const char *event_glob, bool name_only)
1340 {
1341         if (!name_only) {
1342                 printf("\n");
1343                 printf("List of pre-defined events (to be used in -e):\n");
1344         }
1345
1346         print_symbol_events(event_glob, PERF_TYPE_HARDWARE,
1347                             event_symbols_hw, PERF_COUNT_HW_MAX, name_only);
1348
1349         print_symbol_events(event_glob, PERF_TYPE_SOFTWARE,
1350                             event_symbols_sw, PERF_COUNT_SW_MAX, name_only);
1351
1352         print_hwcache_events(event_glob, name_only);
1353
1354         print_pmu_events(event_glob, name_only);
1355
1356         if (event_glob != NULL)
1357                 return;
1358
1359         if (!name_only) {
1360                 printf("  %-50s [%s]\n",
1361                        "rNNN",
1362                        event_type_descriptors[PERF_TYPE_RAW]);
1363                 printf("  %-50s [%s]\n",
1364                        "cpu/t1=v1[,t2=v2,t3 ...]/modifier",
1365                        event_type_descriptors[PERF_TYPE_RAW]);
1366                 printf("   (see 'man perf-list' on how to encode it)\n");
1367                 printf("\n");
1368
1369                 printf("  %-50s [%s]\n",
1370                        "mem:<addr>[/len][:access]",
1371                         event_type_descriptors[PERF_TYPE_BREAKPOINT]);
1372                 printf("\n");
1373         }
1374
1375         print_tracepoint_events(NULL, NULL, name_only);
1376 }
1377
1378 int parse_events__is_hardcoded_term(struct parse_events_term *term)
1379 {
1380         return term->type_term != PARSE_EVENTS__TERM_TYPE_USER;
1381 }
1382
1383 static int new_term(struct parse_events_term **_term, int type_val,
1384                     int type_term, char *config,
1385                     char *str, u64 num)
1386 {
1387         struct parse_events_term *term;
1388
1389         term = zalloc(sizeof(*term));
1390         if (!term)
1391                 return -ENOMEM;
1392
1393         INIT_LIST_HEAD(&term->list);
1394         term->type_val  = type_val;
1395         term->type_term = type_term;
1396         term->config = config;
1397
1398         switch (type_val) {
1399         case PARSE_EVENTS__TERM_TYPE_NUM:
1400                 term->val.num = num;
1401                 break;
1402         case PARSE_EVENTS__TERM_TYPE_STR:
1403                 term->val.str = str;
1404                 break;
1405         default:
1406                 free(term);
1407                 return -EINVAL;
1408         }
1409
1410         *_term = term;
1411         return 0;
1412 }
1413
1414 int parse_events_term__num(struct parse_events_term **term,
1415                            int type_term, char *config, u64 num)
1416 {
1417         return new_term(term, PARSE_EVENTS__TERM_TYPE_NUM, type_term,
1418                         config, NULL, num);
1419 }
1420
1421 int parse_events_term__str(struct parse_events_term **term,
1422                            int type_term, char *config, char *str)
1423 {
1424         return new_term(term, PARSE_EVENTS__TERM_TYPE_STR, type_term,
1425                         config, str, 0);
1426 }
1427
1428 int parse_events_term__sym_hw(struct parse_events_term **term,
1429                               char *config, unsigned idx)
1430 {
1431         struct event_symbol *sym;
1432
1433         BUG_ON(idx >= PERF_COUNT_HW_MAX);
1434         sym = &event_symbols_hw[idx];
1435
1436         if (config)
1437                 return new_term(term, PARSE_EVENTS__TERM_TYPE_STR,
1438                                 PARSE_EVENTS__TERM_TYPE_USER, config,
1439                                 (char *) sym->symbol, 0);
1440         else
1441                 return new_term(term, PARSE_EVENTS__TERM_TYPE_STR,
1442                                 PARSE_EVENTS__TERM_TYPE_USER,
1443                                 (char *) "event", (char *) sym->symbol, 0);
1444 }
1445
1446 int parse_events_term__clone(struct parse_events_term **new,
1447                              struct parse_events_term *term)
1448 {
1449         return new_term(new, term->type_val, term->type_term, term->config,
1450                         term->val.str, term->val.num);
1451 }
1452
1453 void parse_events__free_terms(struct list_head *terms)
1454 {
1455         struct parse_events_term *term, *h;
1456
1457         list_for_each_entry_safe(term, h, terms, list)
1458                 free(term);
1459 }