tools/perf/util/parse-events.c

   1 #include <linux/hw_breakpoint.h>
   2 #include <linux/err.h>
   3 #include "util.h"
   4 #include "../perf.h"
   5 #include "evlist.h"
   6 #include "evsel.h"
   7 #include <subcmd/parse-options.h>
   8 #include "parse-events.h"
   9 #include <subcmd/exec-cmd.h>
  10 #include "string.h"
  11 #include "symbol.h"
  12 #include "cache.h"
  13 #include "header.h"
  14 #include "bpf-loader.h"
  15 #include "debug.h"
  16 #include <api/fs/tracing_path.h>
  17 #include "parse-events-bison.h"
  18 #define YY_EXTRA_TYPE int
  19 #include "parse-events-flex.h"
  20 #include "pmu.h"
  21 #include "thread_map.h"
  22 #include "cpumap.h"
  23 #include "probe-file.h"
  24 #include "asm/bug.h"
  25
  26 #define MAX_NAME_LEN 100
  27
  28 #ifdef PARSER_DEBUG
  29 extern int parse_events_debug;
  30 #endif
  31 int parse_events_parse(void *data, void *scanner);
  32 static int get_config_terms(struct list_head *head_config,
  33                             struct list_head *head_terms __maybe_unused);
  34
  35 static struct perf_pmu_event_symbol *perf_pmu_events_list;
  36 /*
  37  * The variable indicates the number of supported pmu event symbols.
  38  * 0 means not initialized and ready to init
  39  * -1 means failed to init, don't try anymore
  40  * >0 is the number of supported pmu event symbols
  41  */
  42 static int perf_pmu_events_list_num;
  43
  44 struct event_symbol event_symbols_hw[PERF_COUNT_HW_MAX] = {
  45         [PERF_COUNT_HW_CPU_CYCLES] = {
  46                 .symbol = "cpu-cycles",
  47                 .alias  = "cycles",
  48         },
  49         [PERF_COUNT_HW_INSTRUCTIONS] = {
  50                 .symbol = "instructions",
  51                 .alias  = "",
  52         },
  53         [PERF_COUNT_HW_CACHE_REFERENCES] = {
  54                 .symbol = "cache-references",
  55                 .alias  = "",
  56         },
  57         [PERF_COUNT_HW_CACHE_MISSES] = {
  58                 .symbol = "cache-misses",
  59                 .alias  = "",
  60         },
  61         [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = {
  62                 .symbol = "branch-instructions",
  63                 .alias  = "branches",
  64         },
  65         [PERF_COUNT_HW_BRANCH_MISSES] = {
  66                 .symbol = "branch-misses",
  67                 .alias  = "",
  68         },
  69         [PERF_COUNT_HW_BUS_CYCLES] = {
  70                 .symbol = "bus-cycles",
  71                 .alias  = "",
  72         },
  73         [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = {
  74                 .symbol = "stalled-cycles-frontend",
  75                 .alias  = "idle-cycles-frontend",
  76         },
  77         [PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = {
  78                 .symbol = "stalled-cycles-backend",
  79                 .alias  = "idle-cycles-backend",
  80         },
  81         [PERF_COUNT_HW_REF_CPU_CYCLES] = {
  82                 .symbol = "ref-cycles",
  83                 .alias  = "",
  84         },
  85 };
  86
  87 struct event_symbol event_symbols_sw[PERF_COUNT_SW_MAX] = {
  88         [PERF_COUNT_SW_CPU_CLOCK] = {
  89                 .symbol = "cpu-clock",
  90                 .alias  = "",
  91         },
  92         [PERF_COUNT_SW_TASK_CLOCK] = {
  93                 .symbol = "task-clock",
  94                 .alias  = "",
  95         },
  96         [PERF_COUNT_SW_PAGE_FAULTS] = {
  97                 .symbol = "page-faults",
  98                 .alias  = "faults",
  99         },
 100         [PERF_COUNT_SW_CONTEXT_SWITCHES] = {
 101                 .symbol = "context-switches",
 102                 .alias  = "cs",
 103         },
 104         [PERF_COUNT_SW_CPU_MIGRATIONS] = {
 105                 .symbol = "cpu-migrations",
 106                 .alias  = "migrations",
 107         },
 108         [PERF_COUNT_SW_PAGE_FAULTS_MIN] = {
 109                 .symbol = "minor-faults",
 110                 .alias  = "",
 111         },
 112         [PERF_COUNT_SW_PAGE_FAULTS_MAJ] = {
 113                 .symbol = "major-faults",
 114                 .alias  = "",
 115         },
 116         [PERF_COUNT_SW_ALIGNMENT_FAULTS] = {
 117                 .symbol = "alignment-faults",
 118                 .alias  = "",
 119         },
 120         [PERF_COUNT_SW_EMULATION_FAULTS] = {
 121                 .symbol = "emulation-faults",
 122                 .alias  = "",
 123         },
 124         [PERF_COUNT_SW_DUMMY] = {
 125                 .symbol = "dummy",
 126                 .alias  = "",
 127         },
 128         [PERF_COUNT_SW_BPF_OUTPUT] = {
 129                 .symbol = "bpf-output",
 130                 .alias  = "",
 131         },
 132 };
 133
 134 #define __PERF_EVENT_FIELD(config, name) \
 135         ((config & PERF_EVENT_##name##_MASK) >> PERF_EVENT_##name##_SHIFT)
 136
 137 #define PERF_EVENT_RAW(config)          __PERF_EVENT_FIELD(config, RAW)
 138 #define PERF_EVENT_CONFIG(config)       __PERF_EVENT_FIELD(config, CONFIG)
 139 #define PERF_EVENT_TYPE(config)         __PERF_EVENT_FIELD(config, TYPE)
 140 #define PERF_EVENT_ID(config)           __PERF_EVENT_FIELD(config, EVENT)
 141
 142 #define for_each_subsystem(sys_dir, sys_dirent)                 \
 143         while ((sys_dirent = readdir(sys_dir)) != NULL)         \
 144                 if (sys_dirent->d_type == DT_DIR &&             \
 145                     (strcmp(sys_dirent->d_name, ".")) &&        \
 146                     (strcmp(sys_dirent->d_name, "..")))
 147
 148 static int tp_event_has_id(struct dirent *sys_dir, struct dirent *evt_dir)
 149 {
 150         char evt_path[MAXPATHLEN];
 151         int fd;
 152
 153         snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", tracing_events_path,
 154                         sys_dir->d_name, evt_dir->d_name);
 155         fd = open(evt_path, O_RDONLY);
 156         if (fd < 0)
 157                 return -EINVAL;
 158         close(fd);
 159
 160         return 0;
 161 }
 162
 163 #define for_each_event(sys_dirent, evt_dir, evt_dirent)         \
 164         while ((evt_dirent = readdir(evt_dir)) != NULL)         \
 165                 if (evt_dirent->d_type == DT_DIR &&             \
 166                     (strcmp(evt_dirent->d_name, ".")) &&        \
 167                     (strcmp(evt_dirent->d_name, "..")) &&       \
 168                     (!tp_event_has_id(sys_dirent, evt_dirent)))
 169
 170 #define MAX_EVENT_LENGTH 512
 171
 172
 173 struct tracepoint_path *tracepoint_id_to_path(u64 config)
 174 {
 175         struct tracepoint_path *path = NULL;
 176         DIR *sys_dir, *evt_dir;
 177         struct dirent *sys_dirent, *evt_dirent;
 178         char id_buf[24];
 179         int fd;
 180         u64 id;
 181         char evt_path[MAXPATHLEN];
 182         char dir_path[MAXPATHLEN];
 183
 184         sys_dir = opendir(tracing_events_path);
 185         if (!sys_dir)
 186                 return NULL;
 187
 188         for_each_subsystem(sys_dir, sys_dirent) {
 189
 190                 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
 191                          sys_dirent->d_name);
 192                 evt_dir = opendir(dir_path);
 193                 if (!evt_dir)
 194                         continue;
 195
 196                 for_each_event(sys_dirent, evt_dir, evt_dirent) {
 197
 198                         scnprintf(evt_path, MAXPATHLEN, "%s/%s/id", dir_path,
 199                                   evt_dirent->d_name);
 200                         fd = open(evt_path, O_RDONLY);
 201                         if (fd < 0)
 202                                 continue;
 203                         if (read(fd, id_buf, sizeof(id_buf)) < 0) {
 204                                 close(fd);
 205                                 continue;
 206                         }
 207                         close(fd);
 208                         id = atoll(id_buf);
 209                         if (id == config) {
 210                                 closedir(evt_dir);
 211                                 closedir(sys_dir);
 212                                 path = zalloc(sizeof(*path));
 213                                 path->system = malloc(MAX_EVENT_LENGTH);
 214                                 if (!path->system) {
 215                                         free(path);
 216                                         return NULL;
 217                                 }
 218                                 path->name = malloc(MAX_EVENT_LENGTH);
 219                                 if (!path->name) {
 220                                         zfree(&path->system);
 221                                         free(path);
 222                                         return NULL;
 223                                 }
 224                                 strncpy(path->system, sys_dirent->d_name,
 225                                         MAX_EVENT_LENGTH);
 226                                 strncpy(path->name, evt_dirent->d_name,
 227                                         MAX_EVENT_LENGTH);
 228                                 return path;
 229                         }
 230                 }
 231                 closedir(evt_dir);
 232         }
 233
 234         closedir(sys_dir);
 235         return NULL;
 236 }
 237
 238 struct tracepoint_path *tracepoint_name_to_path(const char *name)
 239 {
 240         struct tracepoint_path *path = zalloc(sizeof(*path));
 241         char *str = strchr(name, ':');
 242
 243         if (path == NULL || str == NULL) {
 244                 free(path);
 245                 return NULL;
 246         }
 247
 248         path->system = strndup(name, str - name);
 249         path->name = strdup(str+1);
 250
 251         if (path->system == NULL || path->name == NULL) {
 252                 zfree(&path->system);
 253                 zfree(&path->name);
 254                 free(path);
 255                 path = NULL;
 256         }
 257
 258         return path;
 259 }
 260
 261 const char *event_type(int type)
 262 {
 263         switch (type) {
 264         case PERF_TYPE_HARDWARE:
 265                 return "hardware";
 266
 267         case PERF_TYPE_SOFTWARE:
 268                 return "software";
 269
 270         case PERF_TYPE_TRACEPOINT:
 271                 return "tracepoint";
 272
 273         case PERF_TYPE_HW_CACHE:
 274                 return "hardware-cache";
 275
 276         default:
 277                 break;
 278         }
 279
 280         return "unknown";
 281 }
 282
 283 static int parse_events__is_name_term(struct parse_events_term *term)
 284 {
 285         return term->type_term == PARSE_EVENTS__TERM_TYPE_NAME;
 286 }
 287
 288 static char *get_config_name(struct list_head *head_terms)
 289 {
 290         struct parse_events_term *term;
 291
 292         if (!head_terms)
 293                 return NULL;
 294
 295         list_for_each_entry(term, head_terms, list)
 296                 if (parse_events__is_name_term(term))
 297                         return term->val.str;
 298
 299         return NULL;
 300 }
 301
 302 static struct perf_evsel *
 303 __add_event(struct list_head *list, int *idx,
 304             struct perf_event_attr *attr,
 305             char *name, struct cpu_map *cpus,
 306             struct list_head *config_terms)
 307 {
 308         struct perf_evsel *evsel;
 309
 310         event_attr_init(attr);
 311
 312         evsel = perf_evsel__new_idx(attr, *idx);
 313         if (!evsel)
 314                 return NULL;
 315
 316         (*idx)++;
 317         evsel->cpus     = cpu_map__get(cpus);
 318         evsel->own_cpus = cpu_map__get(cpus);
 319
 320         if (name)
 321                 evsel->name = strdup(name);
 322
 323         if (config_terms)
 324                 list_splice(config_terms, &evsel->config_terms);
 325
 326         list_add_tail(&evsel->node, list);
 327         return evsel;
 328 }
 329
 330 static int add_event(struct list_head *list, int *idx,
 331                      struct perf_event_attr *attr, char *name,
 332                      struct list_head *config_terms)
 333 {
 334         return __add_event(list, idx, attr, name, NULL, config_terms) ? 0 : -ENOMEM;
 335 }
 336
 337 static int parse_aliases(char *str, const char *names[][PERF_EVSEL__MAX_ALIASES], int size)
 338 {
 339         int i, j;
 340         int n, longest = -1;
 341
 342         for (i = 0; i < size; i++) {
 343                 for (j = 0; j < PERF_EVSEL__MAX_ALIASES && names[i][j]; j++) {
 344                         n = strlen(names[i][j]);
 345                         if (n > longest && !strncasecmp(str, names[i][j], n))
 346                                 longest = n;
 347                 }
 348                 if (longest > 0)
 349                         return i;
 350         }
 351
 352         return -1;
 353 }
 354
 355 typedef int config_term_func_t(struct perf_event_attr *attr,
 356                                struct parse_events_term *term,
 357                                struct parse_events_error *err);
 358 static int config_term_common(struct perf_event_attr *attr,
 359                               struct parse_events_term *term,
 360                               struct parse_events_error *err);
 361 static int config_attr(struct perf_event_attr *attr,
 362                        struct list_head *head,
 363                        struct parse_events_error *err,
 364                        config_term_func_t config_term);
 365
 366 int parse_events_add_cache(struct list_head *list, int *idx,
 367                            char *type, char *op_result1, char *op_result2,
 368                            struct parse_events_error *err,
 369                            struct list_head *head_config)
 370 {
 371         struct perf_event_attr attr;
 372         LIST_HEAD(config_terms);
 373         char name[MAX_NAME_LEN], *config_name;
 374         int cache_type = -1, cache_op = -1, cache_result = -1;
 375         char *op_result[2] = { op_result1, op_result2 };
 376         int i, n;
 377
 378         /*
 379          * No fallback - if we cannot get a clear cache type
 380          * then bail out:
 381          */
 382         cache_type = parse_aliases(type, perf_evsel__hw_cache,
 383                                    PERF_COUNT_HW_CACHE_MAX);
 384         if (cache_type == -1)
 385                 return -EINVAL;
 386
 387         config_name = get_config_name(head_config);
 388         n = snprintf(name, MAX_NAME_LEN, "%s", type);
 389
 390         for (i = 0; (i < 2) && (op_result[i]); i++) {
 391                 char *str = op_result[i];
 392
 393                 n += snprintf(name + n, MAX_NAME_LEN - n, "-%s", str);
 394
 395                 if (cache_op == -1) {
 396                         cache_op = parse_aliases(str, perf_evsel__hw_cache_op,
 397                                                  PERF_COUNT_HW_CACHE_OP_MAX);
 398                         if (cache_op >= 0) {
 399                                 if (!perf_evsel__is_cache_op_valid(cache_type, cache_op))
 400                                         return -EINVAL;
 401                                 continue;
 402                         }
 403                 }
 404
 405                 if (cache_result == -1) {
 406                         cache_result = parse_aliases(str, perf_evsel__hw_cache_result,
 407                                                      PERF_COUNT_HW_CACHE_RESULT_MAX);
 408                         if (cache_result >= 0)
 409                                 continue;
 410                 }
 411         }
 412
 413         /*
 414          * Fall back to reads:
 415          */
 416         if (cache_op == -1)
 417                 cache_op = PERF_COUNT_HW_CACHE_OP_READ;
 418
 419         /*
 420          * Fall back to accesses:
 421          */
 422         if (cache_result == -1)
 423                 cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS;
 424
 425         memset(&attr, 0, sizeof(attr));
 426         attr.config = cache_type | (cache_op << 8) | (cache_result << 16);
 427         attr.type = PERF_TYPE_HW_CACHE;
 428
 429         if (head_config) {
 430                 if (config_attr(&attr, head_config, err,
 431                                 config_term_common))
 432                         return -EINVAL;
 433
 434                 if (get_config_terms(head_config, &config_terms))
 435                         return -ENOMEM;
 436         }
 437         return add_event(list, idx, &attr, config_name ? : name, &config_terms);
 438 }
 439
 440 static void tracepoint_error(struct parse_events_error *e, int err,
 441                              const char *sys, const char *name)
 442 {
 443         char help[BUFSIZ];
 444
 445         if (!e)
 446                 return;
 447
 448         /*
 449          * We get error directly from syscall errno ( > 0),
 450          * or from encoded pointer's error ( < 0).
 451          */
 452         err = abs(err);
 453
 454         switch (err) {
 455         case EACCES:
 456                 e->str = strdup("can't access trace events");
 457                 break;
 458         case ENOENT:
 459                 e->str = strdup("unknown tracepoint");
 460                 break;
 461         default:
 462                 e->str = strdup("failed to add tracepoint");
 463                 break;
 464         }
 465
 466         tracing_path__strerror_open_tp(err, help, sizeof(help), sys, name);
 467         e->help = strdup(help);
 468 }
 469
 470 static int add_tracepoint(struct list_head *list, int *idx,
 471                           const char *sys_name, const char *evt_name,
 472                           struct parse_events_error *err,
 473                           struct list_head *head_config)
 474 {
 475         struct perf_evsel *evsel;
 476
 477         evsel = perf_evsel__newtp_idx(sys_name, evt_name, (*idx)++);
 478         if (IS_ERR(evsel)) {
 479                 tracepoint_error(err, PTR_ERR(evsel), sys_name, evt_name);
 480                 return PTR_ERR(evsel);
 481         }
 482
 483         if (head_config) {
 484                 LIST_HEAD(config_terms);
 485
 486                 if (get_config_terms(head_config, &config_terms))
 487                         return -ENOMEM;
 488                 list_splice(&config_terms, &evsel->config_terms);
 489         }
 490
 491         list_add_tail(&evsel->node, list);
 492         return 0;
 493 }
 494
 495 static int add_tracepoint_multi_event(struct list_head *list, int *idx,
 496                                       const char *sys_name, const char *evt_name,
 497                                       struct parse_events_error *err,
 498                                       struct list_head *head_config)
 499 {
 500         char evt_path[MAXPATHLEN];
 501         struct dirent *evt_ent;
 502         DIR *evt_dir;
 503         int ret = 0, found = 0;
 504
 505         snprintf(evt_path, MAXPATHLEN, "%s/%s", tracing_events_path, sys_name);
 506         evt_dir = opendir(evt_path);
 507         if (!evt_dir) {
 508                 tracepoint_error(err, errno, sys_name, evt_name);
 509                 return -1;
 510         }
 511
 512         while (!ret && (evt_ent = readdir(evt_dir))) {
 513                 if (!strcmp(evt_ent->d_name, ".")
 514                     || !strcmp(evt_ent->d_name, "..")
 515                     || !strcmp(evt_ent->d_name, "enable")
 516                     || !strcmp(evt_ent->d_name, "filter"))
 517                         continue;
 518
 519                 if (!strglobmatch(evt_ent->d_name, evt_name))
 520                         continue;
 521
 522                 found++;
 523
 524                 ret = add_tracepoint(list, idx, sys_name, evt_ent->d_name,
 525                                      err, head_config);
 526         }
 527
 528         if (!found) {
 529                 tracepoint_error(err, ENOENT, sys_name, evt_name);
 530                 ret = -1;
 531         }
 532
 533         closedir(evt_dir);
 534         return ret;
 535 }
 536
 537 static int add_tracepoint_event(struct list_head *list, int *idx,
 538                                 const char *sys_name, const char *evt_name,
 539                                 struct parse_events_error *err,
 540                                 struct list_head *head_config)
 541 {
 542         return strpbrk(evt_name, "*?") ?
 543                add_tracepoint_multi_event(list, idx, sys_name, evt_name,
 544                                           err, head_config) :
 545                add_tracepoint(list, idx, sys_name, evt_name,
 546                               err, head_config);
 547 }
 548
 549 static int add_tracepoint_multi_sys(struct list_head *list, int *idx,
 550                                     const char *sys_name, const char *evt_name,
 551                                     struct parse_events_error *err,
 552                                     struct list_head *head_config)
 553 {
 554         struct dirent *events_ent;
 555         DIR *events_dir;
 556         int ret = 0;
 557
 558         events_dir = opendir(tracing_events_path);
 559         if (!events_dir) {
 560                 tracepoint_error(err, errno, sys_name, evt_name);
 561                 return -1;
 562         }
 563
 564         while (!ret && (events_ent = readdir(events_dir))) {
 565                 if (!strcmp(events_ent->d_name, ".")
 566                     || !strcmp(events_ent->d_name, "..")
 567                     || !strcmp(events_ent->d_name, "enable")
 568                     || !strcmp(events_ent->d_name, "header_event")
 569                     || !strcmp(events_ent->d_name, "header_page"))
 570                         continue;
 571
 572                 if (!strglobmatch(events_ent->d_name, sys_name))
 573                         continue;
 574
 575                 ret = add_tracepoint_event(list, idx, events_ent->d_name,
 576                                            evt_name, err, head_config);
 577         }
 578
 579         closedir(events_dir);
 580         return ret;
 581 }
 582
 583 struct __add_bpf_event_param {
 584         struct parse_events_evlist *data;
 585         struct list_head *list;
 586         struct list_head *head_config;
 587 };
 588
 589 static int add_bpf_event(const char *group, const char *event, int fd,
 590                          void *_param)
 591 {
 592         LIST_HEAD(new_evsels);
 593         struct __add_bpf_event_param *param = _param;
 594         struct parse_events_evlist *evlist = param->data;
 595         struct list_head *list = param->list;
 596         struct perf_evsel *pos;
 597         int err;
 598
 599         pr_debug("add bpf event %s:%s and attach bpf program %d\n",
 600                  group, event, fd);
 601
 602         err = parse_events_add_tracepoint(&new_evsels, &evlist->idx, group,
 603                                           event, evlist->error,
 604                                           param->head_config);
 605         if (err) {
 606                 struct perf_evsel *evsel, *tmp;
 607
 608                 pr_debug("Failed to add BPF event %s:%s\n",
 609                          group, event);
 610                 list_for_each_entry_safe(evsel, tmp, &new_evsels, node) {
 611                         list_del(&evsel->node);
 612                         perf_evsel__delete(evsel);
 613                 }
 614                 return err;
 615         }
 616         pr_debug("adding %s:%s\n", group, event);
 617
 618         list_for_each_entry(pos, &new_evsels, node) {
 619                 pr_debug("adding %s:%s to %p\n",
 620                          group, event, pos);
 621                 pos->bpf_fd = fd;
 622         }
 623         list_splice(&new_evsels, list);
 624         return 0;
 625 }
 626
 627 int parse_events_load_bpf_obj(struct parse_events_evlist *data,
 628                               struct list_head *list,
 629                               struct bpf_object *obj,
 630                               struct list_head *head_config)
 631 {
 632         int err;
 633         char errbuf[BUFSIZ];
 634         struct __add_bpf_event_param param = {data, list, head_config};
 635         static bool registered_unprobe_atexit = false;
 636
 637         if (IS_ERR(obj) || !obj) {
 638                 snprintf(errbuf, sizeof(errbuf),
 639                          "Internal error: load bpf obj with NULL");
 640                 err = -EINVAL;
 641                 goto errout;
 642         }
 643
 644         /*
 645          * Register atexit handler before calling bpf__probe() so
 646          * bpf__probe() don't need to unprobe probe points its already
 647          * created when failure.
 648          */
 649         if (!registered_unprobe_atexit) {
 650                 atexit(bpf__clear);
 651                 registered_unprobe_atexit = true;
 652         }
 653
 654         err = bpf__probe(obj);
 655         if (err) {
 656                 bpf__strerror_probe(obj, err, errbuf, sizeof(errbuf));
 657                 goto errout;
 658         }
 659
 660         err = bpf__load(obj);
 661         if (err) {
 662                 bpf__strerror_load(obj, err, errbuf, sizeof(errbuf));
 663                 goto errout;
 664         }
 665
 666         err = bpf__foreach_event(obj, add_bpf_event, &param);
 667         if (err) {
 668                 snprintf(errbuf, sizeof(errbuf),
 669                          "Attach events in BPF object failed");
 670                 goto errout;
 671         }
 672
 673         return 0;
 674 errout:
 675         data->error->help = strdup("(add -v to see detail)");
 676         data->error->str = strdup(errbuf);
 677         return err;
 678 }
 679
 680 static int
 681 parse_events_config_bpf(struct parse_events_evlist *data,
 682                         struct bpf_object *obj,
 683                         struct list_head *head_config)
 684 {
 685         struct parse_events_term *term;
 686         int error_pos;
 687
 688         if (!head_config || list_empty(head_config))
 689                 return 0;
 690
 691         list_for_each_entry(term, head_config, list) {
 692                 char errbuf[BUFSIZ];
 693                 int err;
 694
 695                 if (term->type_term != PARSE_EVENTS__TERM_TYPE_USER) {
 696                         snprintf(errbuf, sizeof(errbuf),
 697                                  "Invalid config term for BPF object");
 698                         errbuf[BUFSIZ - 1] = '\0';
 699
 700                         data->error->idx = term->err_term;
 701                         data->error->str = strdup(errbuf);
 702                         return -EINVAL;
 703                 }
 704
 705                 err = bpf__config_obj(obj, term, data->evlist, &error_pos);
 706                 if (err) {
 707                         bpf__strerror_config_obj(obj, term, data->evlist,
 708                                                  &error_pos, err, errbuf,
 709                                                  sizeof(errbuf));
 710                         data->error->help = strdup(
 711 "Hint:\tValid config terms:\n"
 712 "     \tmap:[<arraymap>].value<indices>=[value]\n"
 713 "     \tmap:[<eventmap>].event<indices>=[event]\n"
 714 "\n"
 715 "     \twhere <indices> is something like [0,3...5] or [all]\n"
 716 "     \t(add -v to see detail)");
 717                         data->error->str = strdup(errbuf);
 718                         if (err == -BPF_LOADER_ERRNO__OBJCONF_MAP_VALUE)
 719                                 data->error->idx = term->err_val;
 720                         else
 721                                 data->error->idx = term->err_term + error_pos;
 722                         return err;
 723                 }
 724         }
 725         return 0;
 726 }
 727
 728 /*
 729  * Split config terms:
 730  * perf record -e bpf.c/call-graph=fp,map:array.value[0]=1/ ...
 731  *  'call-graph=fp' is 'evt config', should be applied to each
 732  *  events in bpf.c.
 733  * 'map:array.value[0]=1' is 'obj config', should be processed
 734  * with parse_events_config_bpf.
 735  *
 736  * Move object config terms from the first list to obj_head_config.
 737  */
 738 static void
 739 split_bpf_config_terms(struct list_head *evt_head_config,
 740                        struct list_head *obj_head_config)
 741 {
 742         struct parse_events_term *term, *temp;
 743
 744         /*
 745          * Currectly, all possible user config term
 746          * belong to bpf object. parse_events__is_hardcoded_term()
 747          * happends to be a good flag.
 748          *
 749          * See parse_events_config_bpf() and
 750          * config_term_tracepoint().
 751          */
 752         list_for_each_entry_safe(term, temp, evt_head_config, list)
 753                 if (!parse_events__is_hardcoded_term(term))
 754                         list_move_tail(&term->list, obj_head_config);
 755 }
 756
 757 int parse_events_load_bpf(struct parse_events_evlist *data,
 758                           struct list_head *list,
 759                           char *bpf_file_name,
 760                           bool source,
 761                           struct list_head *head_config)
 762 {
 763         int err;
 764         struct bpf_object *obj;
 765         LIST_HEAD(obj_head_config);
 766
 767         if (head_config)
 768                 split_bpf_config_terms(head_config, &obj_head_config);
 769
 770         obj = bpf__prepare_load(bpf_file_name, source);
 771         if (IS_ERR(obj)) {
 772                 char errbuf[BUFSIZ];
 773
 774                 err = PTR_ERR(obj);
 775
 776                 if (err == -ENOTSUP)
 777                         snprintf(errbuf, sizeof(errbuf),
 778                                  "BPF support is not compiled");
 779                 else
 780                         bpf__strerror_prepare_load(bpf_file_name,
 781                                                    source,
 782                                                    -err, errbuf,
 783                                                    sizeof(errbuf));
 784
 785                 data->error->help = strdup("(add -v to see detail)");
 786                 data->error->str = strdup(errbuf);
 787                 return err;
 788         }
 789
 790         err = parse_events_load_bpf_obj(data, list, obj, head_config);
 791         if (err)
 792                 return err;
 793         err = parse_events_config_bpf(data, obj, &obj_head_config);
 794
 795         /*
 796          * Caller doesn't know anything about obj_head_config,
 797          * so combine them together again before returnning.
 798          */
 799         if (head_config)
 800                 list_splice_tail(&obj_head_config, head_config);
 801         return err;
 802 }
 803
 804 static int
 805 parse_breakpoint_type(const char *type, struct perf_event_attr *attr)
 806 {
 807         int i;
 808
 809         for (i = 0; i < 3; i++) {
 810                 if (!type || !type[i])
 811                         break;
 812
 813 #define CHECK_SET_TYPE(bit)             \
 814 do {                                    \
 815         if (attr->bp_type & bit)        \
 816                 return -EINVAL;         \
 817         else                            \
 818                 attr->bp_type |= bit;   \
 819 } while (0)
 820
 821                 switch (type[i]) {
 822                 case 'r':
 823                         CHECK_SET_TYPE(HW_BREAKPOINT_R);
 824                         break;
 825                 case 'w':
 826                         CHECK_SET_TYPE(HW_BREAKPOINT_W);
 827                         break;
 828                 case 'x':
 829                         CHECK_SET_TYPE(HW_BREAKPOINT_X);
 830                         break;
 831                 default:
 832                         return -EINVAL;
 833                 }
 834         }
 835
 836 #undef CHECK_SET_TYPE
 837
 838         if (!attr->bp_type) /* Default */
 839                 attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W;
 840
 841         return 0;
 842 }
 843
 844 int parse_events_add_breakpoint(struct list_head *list, int *idx,
 845                                 void *ptr, char *type, u64 len)
 846 {
 847         struct perf_event_attr attr;
 848
 849         memset(&attr, 0, sizeof(attr));
 850         attr.bp_addr = (unsigned long) ptr;
 851
 852         if (parse_breakpoint_type(type, &attr))
 853                 return -EINVAL;
 854
 855         /* Provide some defaults if len is not specified */
 856         if (!len) {
 857                 if (attr.bp_type == HW_BREAKPOINT_X)
 858                         len = sizeof(long);
 859                 else
 860                         len = HW_BREAKPOINT_LEN_4;
 861         }
 862
 863         attr.bp_len = len;
 864
 865         attr.type = PERF_TYPE_BREAKPOINT;
 866         attr.sample_period = 1;
 867
 868         return add_event(list, idx, &attr, NULL, NULL);
 869 }
 870
 871 static int check_type_val(struct parse_events_term *term,
 872                           struct parse_events_error *err,
 873                           int type)
 874 {
 875         if (type == term->type_val)
 876                 return 0;
 877
 878         if (err) {
 879                 err->idx = term->err_val;
 880                 if (type == PARSE_EVENTS__TERM_TYPE_NUM)
 881                         err->str = strdup("expected numeric value");
 882                 else
 883                         err->str = strdup("expected string value");
 884         }
 885         return -EINVAL;
 886 }
 887
 888 /*
 889  * Update according to parse-events.l
 890  */
 891 static const char *config_term_names[__PARSE_EVENTS__TERM_TYPE_NR] = {
 892         [PARSE_EVENTS__TERM_TYPE_USER]                  = "<sysfs term>",
 893         [PARSE_EVENTS__TERM_TYPE_CONFIG]                = "config",
 894         [PARSE_EVENTS__TERM_TYPE_CONFIG1]               = "config1",
 895         [PARSE_EVENTS__TERM_TYPE_CONFIG2]               = "config2",
 896         [PARSE_EVENTS__TERM_TYPE_NAME]                  = "name",
 897         [PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD]         = "period",
 898         [PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ]           = "freq",
 899         [PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE]    = "branch_type",
 900         [PARSE_EVENTS__TERM_TYPE_TIME]                  = "time",
 901         [PARSE_EVENTS__TERM_TYPE_CALLGRAPH]             = "call-graph",
 902         [PARSE_EVENTS__TERM_TYPE_STACKSIZE]             = "stack-size",
 903         [PARSE_EVENTS__TERM_TYPE_NOINHERIT]             = "no-inherit",
 904         [PARSE_EVENTS__TERM_TYPE_INHERIT]               = "inherit",
 905         [PARSE_EVENTS__TERM_TYPE_MAX_STACK]             = "max-stack",
 906         [PARSE_EVENTS__TERM_TYPE_OVERWRITE]             = "overwrite",
 907         [PARSE_EVENTS__TERM_TYPE_NOOVERWRITE]           = "no-overwrite",
 908         [PARSE_EVENTS__TERM_TYPE_DRV_CFG]               = "driver-config",
 909 };
 910
 911 static bool config_term_shrinked;
 912
 913 static bool
 914 config_term_avail(int term_type, struct parse_events_error *err)
 915 {
 916         if (term_type < 0 || term_type >= __PARSE_EVENTS__TERM_TYPE_NR) {
 917                 err->str = strdup("Invalid term_type");
 918                 return false;
 919         }
 920         if (!config_term_shrinked)
 921                 return true;
 922
 923         switch (term_type) {
 924         case PARSE_EVENTS__TERM_TYPE_CONFIG:
 925         case PARSE_EVENTS__TERM_TYPE_CONFIG1:
 926         case PARSE_EVENTS__TERM_TYPE_CONFIG2:
 927         case PARSE_EVENTS__TERM_TYPE_NAME:
 928         case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
 929                 return true;
 930         default:
 931                 if (!err)
 932                         return false;
 933
 934                 /* term_type is validated so indexing is safe */
 935                 if (asprintf(&err->str, "'%s' is not usable in 'perf stat'",
 936                              config_term_names[term_type]) < 0)
 937                         err->str = NULL;
 938                 return false;
 939         }
 940 }
 941
 942 void parse_events__shrink_config_terms(void)
 943 {
 944         config_term_shrinked = true;
 945 }
 946
 947 static int config_term_common(struct perf_event_attr *attr,
 948                               struct parse_events_term *term,
 949                               struct parse_events_error *err)
 950 {
 951 #define CHECK_TYPE_VAL(type)                                               \
 952 do {                                                                       \
 953         if (check_type_val(term, err, PARSE_EVENTS__TERM_TYPE_ ## type)) \
 954                 return -EINVAL;                                            \
 955 } while (0)
 956
 957         switch (term->type_term) {
 958         case PARSE_EVENTS__TERM_TYPE_CONFIG:
 959                 CHECK_TYPE_VAL(NUM);
 960                 attr->config = term->val.num;
 961                 break;
 962         case PARSE_EVENTS__TERM_TYPE_CONFIG1:
 963                 CHECK_TYPE_VAL(NUM);
 964                 attr->config1 = term->val.num;
 965                 break;
 966         case PARSE_EVENTS__TERM_TYPE_CONFIG2:
 967                 CHECK_TYPE_VAL(NUM);
 968                 attr->config2 = term->val.num;
 969                 break;
 970         case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
 971                 CHECK_TYPE_VAL(NUM);
 972                 break;
 973         case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
 974                 CHECK_TYPE_VAL(NUM);
 975                 break;
 976         case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
 977                 /*
 978                  * TODO uncomment when the field is available
 979                  * attr->branch_sample_type = term->val.num;
 980                  */
 981                 break;
 982         case PARSE_EVENTS__TERM_TYPE_TIME:
 983                 CHECK_TYPE_VAL(NUM);
 984                 if (term->val.num > 1) {
 985                         err->str = strdup("expected 0 or 1");
 986                         err->idx = term->err_val;
 987                         return -EINVAL;
 988                 }
 989                 break;
 990         case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
 991                 CHECK_TYPE_VAL(STR);
 992                 break;
 993         case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
 994                 CHECK_TYPE_VAL(NUM);
 995                 break;
 996         case PARSE_EVENTS__TERM_TYPE_INHERIT:
 997                 CHECK_TYPE_VAL(NUM);
 998                 break;
 999         case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1000                 CHECK_TYPE_VAL(NUM);
1001                 break;
1002         case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1003                 CHECK_TYPE_VAL(NUM);
1004                 break;
1005         case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1006                 CHECK_TYPE_VAL(NUM);
1007                 break;
1008         case PARSE_EVENTS__TERM_TYPE_NAME:
1009                 CHECK_TYPE_VAL(STR);
1010                 break;
1011         case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1012                 CHECK_TYPE_VAL(NUM);
1013                 break;
1014         default:
1015                 err->str = strdup("unknown term");
1016                 err->idx = term->err_term;
1017                 err->help = parse_events_formats_error_string(NULL);
1018                 return -EINVAL;
1019         }
1020
1021         /*
1022          * Check term availbility after basic checking so
1023          * PARSE_EVENTS__TERM_TYPE_USER can be found and filtered.
1024          *
1025          * If check availbility at the entry of this function,
1026          * user will see "'<sysfs term>' is not usable in 'perf stat'"
1027          * if an invalid config term is provided for legacy events
1028          * (for example, instructions/badterm/...), which is confusing.
1029          */
1030         if (!config_term_avail(term->type_term, err))
1031                 return -EINVAL;
1032         return 0;
1033 #undef CHECK_TYPE_VAL
1034 }
1035
1036 static int config_term_pmu(struct perf_event_attr *attr,
1037                            struct parse_events_term *term,
1038                            struct parse_events_error *err)
1039 {
1040         if (term->type_term == PARSE_EVENTS__TERM_TYPE_USER ||
1041             term->type_term == PARSE_EVENTS__TERM_TYPE_DRV_CFG)
1042                 /*
1043                  * Always succeed for sysfs terms, as we dont know
1044                  * at this point what type they need to have.
1045                  */
1046                 return 0;
1047         else
1048                 return config_term_common(attr, term, err);
1049 }
1050
1051 static int config_term_tracepoint(struct perf_event_attr *attr,
1052                                   struct parse_events_term *term,
1053                                   struct parse_events_error *err)
1054 {
1055         switch (term->type_term) {
1056         case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
1057         case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1058         case PARSE_EVENTS__TERM_TYPE_INHERIT:
1059         case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1060         case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1061         case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1062         case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1063                 return config_term_common(attr, term, err);
1064         default:
1065                 if (err) {
1066                         err->idx = term->err_term;
1067                         err->str = strdup("unknown term");
1068                         err->help = strdup("valid terms: call-graph,stack-size\n");
1069                 }
1070                 return -EINVAL;
1071         }
1072
1073         return 0;
1074 }
1075
1076 static int config_attr(struct perf_event_attr *attr,
1077                        struct list_head *head,
1078                        struct parse_events_error *err,
1079                        config_term_func_t config_term)
1080 {
1081         struct parse_events_term *term;
1082
1083         list_for_each_entry(term, head, list)
1084                 if (config_term(attr, term, err))
1085                         return -EINVAL;
1086
1087         return 0;
1088 }
1089
1090 static int get_config_terms(struct list_head *head_config,
1091                             struct list_head *head_terms __maybe_unused)
1092 {
1093 #define ADD_CONFIG_TERM(__type, __name, __val)                  \
1094 do {                                                            \
1095         struct perf_evsel_config_term *__t;                     \
1096                                                                 \
1097         __t = zalloc(sizeof(*__t));                             \
1098         if (!__t)                                               \
1099                 return -ENOMEM;                                 \
1100                                                                 \
1101         INIT_LIST_HEAD(&__t->list);                             \
1102         __t->type       = PERF_EVSEL__CONFIG_TERM_ ## __type;   \
1103         __t->val.__name = __val;                                \
1104         list_add_tail(&__t->list, head_terms);                  \
1105 } while (0)
1106
1107         struct parse_events_term *term;
1108
1109         list_for_each_entry(term, head_config, list) {
1110                 switch (term->type_term) {
1111                 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
1112                         ADD_CONFIG_TERM(PERIOD, period, term->val.num);
1113                         break;
1114                 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
1115                         ADD_CONFIG_TERM(FREQ, freq, term->val.num);
1116                         break;
1117                 case PARSE_EVENTS__TERM_TYPE_TIME:
1118                         ADD_CONFIG_TERM(TIME, time, term->val.num);
1119                         break;
1120                 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
1121                         ADD_CONFIG_TERM(CALLGRAPH, callgraph, term->val.str);
1122                         break;
1123                 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1124                         ADD_CONFIG_TERM(STACK_USER, stack_user, term->val.num);
1125                         break;
1126                 case PARSE_EVENTS__TERM_TYPE_INHERIT:
1127                         ADD_CONFIG_TERM(INHERIT, inherit, term->val.num ? 1 : 0);
1128                         break;
1129                 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1130                         ADD_CONFIG_TERM(INHERIT, inherit, term->val.num ? 0 : 1);
1131                         break;
1132                 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1133                         ADD_CONFIG_TERM(MAX_STACK, max_stack, term->val.num);
1134                         break;
1135                 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1136                         ADD_CONFIG_TERM(OVERWRITE, overwrite, term->val.num ? 1 : 0);
1137                         break;
1138                 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1139                         ADD_CONFIG_TERM(OVERWRITE, overwrite, term->val.num ? 0 : 1);
1140                         break;
1141                 case PARSE_EVENTS__TERM_TYPE_DRV_CFG:
1142                         ADD_CONFIG_TERM(DRV_CFG, drv_cfg, term->val.str);
1143                         break;
1144                 default:
1145                         break;
1146                 }
1147         }
1148 #undef ADD_EVSEL_CONFIG
1149         return 0;
1150 }
1151
1152 int parse_events_add_tracepoint(struct list_head *list, int *idx,
1153                                 const char *sys, const char *event,
1154                                 struct parse_events_error *err,
1155                                 struct list_head *head_config)
1156 {
1157         if (head_config) {
1158                 struct perf_event_attr attr;
1159
1160                 if (config_attr(&attr, head_config, err,
1161                                 config_term_tracepoint))
1162                         return -EINVAL;
1163         }
1164
1165         if (strpbrk(sys, "*?"))
1166                 return add_tracepoint_multi_sys(list, idx, sys, event,
1167                                                 err, head_config);
1168         else
1169                 return add_tracepoint_event(list, idx, sys, event,
1170                                             err, head_config);
1171 }
1172
1173 int parse_events_add_numeric(struct parse_events_evlist *data,
1174                              struct list_head *list,
1175                              u32 type, u64 config,
1176                              struct list_head *head_config)
1177 {
1178         struct perf_event_attr attr;
1179         LIST_HEAD(config_terms);
1180
1181         memset(&attr, 0, sizeof(attr));
1182         attr.type = type;
1183         attr.config = config;
1184
1185         if (head_config) {
1186                 if (config_attr(&attr, head_config, data->error,
1187                                 config_term_common))
1188                         return -EINVAL;
1189
1190                 if (get_config_terms(head_config, &config_terms))
1191                         return -ENOMEM;
1192         }
1193
1194         return add_event(list, &data->idx, &attr,
1195                          get_config_name(head_config), &config_terms);
1196 }
1197
1198 int parse_events_add_pmu(struct parse_events_evlist *data,
1199                          struct list_head *list, char *name,
1200                          struct list_head *head_config)
1201 {
1202         struct perf_event_attr attr;
1203         struct perf_pmu_info info;
1204         struct perf_pmu *pmu;
1205         struct perf_evsel *evsel;
1206         LIST_HEAD(config_terms);
1207
1208         pmu = perf_pmu__find(name);
1209         if (!pmu)
1210                 return -EINVAL;
1211
1212         if (pmu->default_config) {
1213                 memcpy(&attr, pmu->default_config,
1214                        sizeof(struct perf_event_attr));
1215         } else {
1216                 memset(&attr, 0, sizeof(attr));
1217         }
1218
1219         if (!head_config) {
1220                 attr.type = pmu->type;
1221                 evsel = __add_event(list, &data->idx, &attr, NULL, pmu->cpus, NULL);
1222                 return evsel ? 0 : -ENOMEM;
1223         }
1224
1225         if (perf_pmu__check_alias(pmu, head_config, &info))
1226                 return -EINVAL;
1227
1228         /*
1229          * Configure hardcoded terms first, no need to check
1230          * return value when called with fail == 0 ;)
1231          */
1232         if (config_attr(&attr, head_config, data->error, config_term_pmu))
1233                 return -EINVAL;
1234
1235         if (get_config_terms(head_config, &config_terms))
1236                 return -ENOMEM;
1237
1238         if (perf_pmu__config(pmu, &attr, head_config, data->error))
1239                 return -EINVAL;
1240
1241         evsel = __add_event(list, &data->idx, &attr,
1242                             get_config_name(head_config), pmu->cpus,
1243                             &config_terms);
1244         if (evsel) {
1245                 evsel->unit = info.unit;
1246                 evsel->scale = info.scale;
1247                 evsel->per_pkg = info.per_pkg;
1248                 evsel->snapshot = info.snapshot;
1249         }
1250
1251         return evsel ? 0 : -ENOMEM;
1252 }
1253
1254 int parse_events__modifier_group(struct list_head *list,
1255                                  char *event_mod)
1256 {
1257         return parse_events__modifier_event(list, event_mod, true);
1258 }
1259
1260 void parse_events__set_leader(char *name, struct list_head *list)
1261 {
1262         struct perf_evsel *leader;
1263
1264         if (list_empty(list)) {
1265                 WARN_ONCE(true, "WARNING: failed to set leader: empty list");
1266                 return;
1267         }
1268
1269         __perf_evlist__set_leader(list);
1270         leader = list_entry(list->next, struct perf_evsel, node);
1271         leader->group_name = name ? strdup(name) : NULL;
1272 }
1273
1274 /* list_event is assumed to point to malloc'ed memory */
1275 void parse_events_update_lists(struct list_head *list_event,
1276                                struct list_head *list_all)
1277 {
1278         /*
1279          * Called for single event definition. Update the
1280          * 'all event' list, and reinit the 'single event'
1281          * list, for next event definition.
1282          */
1283         list_splice_tail(list_event, list_all);
1284         free(list_event);
1285 }
1286
1287 struct event_modifier {
1288         int eu;
1289         int ek;
1290         int eh;
1291         int eH;
1292         int eG;
1293         int eI;
1294         int precise;
1295         int precise_max;
1296         int exclude_GH;
1297         int sample_read;
1298         int pinned;
1299 };
1300
1301 static int get_event_modifier(struct event_modifier *mod, char *str,
1302                                struct perf_evsel *evsel)
1303 {
1304         int eu = evsel ? evsel->attr.exclude_user : 0;
1305         int ek = evsel ? evsel->attr.exclude_kernel : 0;
1306         int eh = evsel ? evsel->attr.exclude_hv : 0;
1307         int eH = evsel ? evsel->attr.exclude_host : 0;
1308         int eG = evsel ? evsel->attr.exclude_guest : 0;
1309         int eI = evsel ? evsel->attr.exclude_idle : 0;
1310         int precise = evsel ? evsel->attr.precise_ip : 0;
1311         int precise_max = 0;
1312         int sample_read = 0;
1313         int pinned = evsel ? evsel->attr.pinned : 0;
1314
1315         int exclude = eu | ek | eh;
1316         int exclude_GH = evsel ? evsel->exclude_GH : 0;
1317
1318         memset(mod, 0, sizeof(*mod));
1319
1320         while (*str) {
1321                 if (*str == 'u') {
1322                         if (!exclude)
1323                                 exclude = eu = ek = eh = 1;
1324                         eu = 0;
1325                 } else if (*str == 'k') {
1326                         if (!exclude)
1327                                 exclude = eu = ek = eh = 1;
1328                         ek = 0;
1329                 } else if (*str == 'h') {
1330                         if (!exclude)
1331                                 exclude = eu = ek = eh = 1;
1332                         eh = 0;
1333                 } else if (*str == 'G') {
1334                         if (!exclude_GH)
1335                                 exclude_GH = eG = eH = 1;
1336                         eG = 0;
1337                 } else if (*str == 'H') {
1338                         if (!exclude_GH)
1339                                 exclude_GH = eG = eH = 1;
1340                         eH = 0;
1341                 } else if (*str == 'I') {
1342                         eI = 1;
1343                 } else if (*str == 'p') {
1344                         precise++;
1345                         /* use of precise requires exclude_guest */
1346                         if (!exclude_GH)
1347                                 eG = 1;
1348                 } else if (*str == 'P') {
1349                         precise_max = 1;
1350                 } else if (*str == 'S') {
1351                         sample_read = 1;
1352                 } else if (*str == 'D') {
1353                         pinned = 1;
1354                 } else
1355                         break;
1356
1357                 ++str;
1358         }
1359
1360         /*
1361          * precise ip:
1362          *
1363          *  0 - SAMPLE_IP can have arbitrary skid
1364          *  1 - SAMPLE_IP must have constant skid
1365          *  2 - SAMPLE_IP requested to have 0 skid
1366          *  3 - SAMPLE_IP must have 0 skid
1367          *
1368          *  See also PERF_RECORD_MISC_EXACT_IP
1369          */
1370         if (precise > 3)
1371                 return -EINVAL;
1372
1373         mod->eu = eu;
1374         mod->ek = ek;
1375         mod->eh = eh;
1376         mod->eH = eH;
1377         mod->eG = eG;
1378         mod->eI = eI;
1379         mod->precise = precise;
1380         mod->precise_max = precise_max;
1381         mod->exclude_GH = exclude_GH;
1382         mod->sample_read = sample_read;
1383         mod->pinned = pinned;
1384
1385         return 0;
1386 }
1387
1388 /*
1389  * Basic modifier sanity check to validate it contains only one
1390  * instance of any modifier (apart from 'p') present.
1391  */
1392 static int check_modifier(char *str)
1393 {
1394         char *p = str;
1395
1396         /* The sizeof includes 0 byte as well. */
1397         if (strlen(str) > (sizeof("ukhGHpppPSDI") - 1))
1398                 return -1;
1399
1400         while (*p) {
1401                 if (*p != 'p' && strchr(p + 1, *p))
1402                         return -1;
1403                 p++;
1404         }
1405
1406         return 0;
1407 }
1408
1409 int parse_events__modifier_event(struct list_head *list, char *str, bool add)
1410 {
1411         struct perf_evsel *evsel;
1412         struct event_modifier mod;
1413
1414         if (str == NULL)
1415                 return 0;
1416
1417         if (check_modifier(str))
1418                 return -EINVAL;
1419
1420         if (!add && get_event_modifier(&mod, str, NULL))
1421                 return -EINVAL;
1422
1423         __evlist__for_each_entry(list, evsel) {
1424                 if (add && get_event_modifier(&mod, str, evsel))
1425                         return -EINVAL;
1426
1427                 evsel->attr.exclude_user   = mod.eu;
1428                 evsel->attr.exclude_kernel = mod.ek;
1429                 evsel->attr.exclude_hv     = mod.eh;
1430                 evsel->attr.precise_ip     = mod.precise;
1431                 evsel->attr.exclude_host   = mod.eH;
1432                 evsel->attr.exclude_guest  = mod.eG;
1433                 evsel->attr.exclude_idle   = mod.eI;
1434                 evsel->exclude_GH          = mod.exclude_GH;
1435                 evsel->sample_read         = mod.sample_read;
1436                 evsel->precise_max         = mod.precise_max;
1437
1438                 if (perf_evsel__is_group_leader(evsel))
1439                         evsel->attr.pinned = mod.pinned;
1440         }
1441
1442         return 0;
1443 }
1444
1445 int parse_events_name(struct list_head *list, char *name)
1446 {
1447         struct perf_evsel *evsel;
1448
1449         __evlist__for_each_entry(list, evsel) {
1450                 if (!evsel->name)
1451                         evsel->name = strdup(name);
1452         }
1453
1454         return 0;
1455 }
1456
1457 static int
1458 comp_pmu(const void *p1, const void *p2)
1459 {
1460         struct perf_pmu_event_symbol *pmu1 = (struct perf_pmu_event_symbol *) p1;
1461         struct perf_pmu_event_symbol *pmu2 = (struct perf_pmu_event_symbol *) p2;
1462
1463         return strcasecmp(pmu1->symbol, pmu2->symbol);
1464 }
1465
1466 static void perf_pmu__parse_cleanup(void)
1467 {
1468         if (perf_pmu_events_list_num > 0) {
1469                 struct perf_pmu_event_symbol *p;
1470                 int i;
1471
1472                 for (i = 0; i < perf_pmu_events_list_num; i++) {
1473                         p = perf_pmu_events_list + i;
1474                         free(p->symbol);
1475                 }
1476                 free(perf_pmu_events_list);
1477                 perf_pmu_events_list = NULL;
1478                 perf_pmu_events_list_num = 0;
1479         }
1480 }
1481
1482 #define SET_SYMBOL(str, stype)          \
1483 do {                                    \
1484         p->symbol = str;                \
1485         if (!p->symbol)                 \
1486                 goto err;               \
1487         p->type = stype;                \
1488 } while (0)
1489
1490 /*
1491  * Read the pmu events list from sysfs
1492  * Save it into perf_pmu_events_list
1493  */
1494 static void perf_pmu__parse_init(void)
1495 {
1496
1497         struct perf_pmu *pmu = NULL;
1498         struct perf_pmu_alias *alias;
1499         int len = 0;
1500
1501         pmu = perf_pmu__find("cpu");
1502         if ((pmu == NULL) || list_empty(&pmu->aliases)) {
1503                 perf_pmu_events_list_num = -1;
1504                 return;
1505         }
1506         list_for_each_entry(alias, &pmu->aliases, list) {
1507                 if (strchr(alias->name, '-'))
1508                         len++;
1509                 len++;
1510         }
1511         perf_pmu_events_list = malloc(sizeof(struct perf_pmu_event_symbol) * len);
1512         if (!perf_pmu_events_list)
1513                 return;
1514         perf_pmu_events_list_num = len;
1515
1516         len = 0;
1517         list_for_each_entry(alias, &pmu->aliases, list) {
1518                 struct perf_pmu_event_symbol *p = perf_pmu_events_list + len;
1519                 char *tmp = strchr(alias->name, '-');
1520
1521                 if (tmp != NULL) {
1522                         SET_SYMBOL(strndup(alias->name, tmp - alias->name),
1523                                         PMU_EVENT_SYMBOL_PREFIX);
1524                         p++;
1525                         SET_SYMBOL(strdup(++tmp), PMU_EVENT_SYMBOL_SUFFIX);
1526                         len += 2;
1527                 } else {
1528                         SET_SYMBOL(strdup(alias->name), PMU_EVENT_SYMBOL);
1529                         len++;
1530                 }
1531         }
1532         qsort(perf_pmu_events_list, len,
1533                 sizeof(struct perf_pmu_event_symbol), comp_pmu);
1534
1535         return;
1536 err:
1537         perf_pmu__parse_cleanup();
1538 }
1539
1540 enum perf_pmu_event_symbol_type
1541 perf_pmu__parse_check(const char *name)
1542 {
1543         struct perf_pmu_event_symbol p, *r;
1544
1545         /* scan kernel pmu events from sysfs if needed */
1546         if (perf_pmu_events_list_num == 0)
1547                 perf_pmu__parse_init();
1548         /*
1549          * name "cpu" could be prefix of cpu-cycles or cpu// events.
1550          * cpu-cycles has been handled by hardcode.
1551          * So it must be cpu// events, not kernel pmu event.
1552          */
1553         if ((perf_pmu_events_list_num <= 0) || !strcmp(name, "cpu"))
1554                 return PMU_EVENT_SYMBOL_ERR;
1555
1556         p.symbol = strdup(name);
1557         r = bsearch(&p, perf_pmu_events_list,
1558                         (size_t) perf_pmu_events_list_num,
1559                         sizeof(struct perf_pmu_event_symbol), comp_pmu);
1560         free(p.symbol);
1561         return r ? r->type : PMU_EVENT_SYMBOL_ERR;
1562 }
1563
1564 static int parse_events__scanner(const char *str, void *data, int start_token)
1565 {
1566         YY_BUFFER_STATE buffer;
1567         void *scanner;
1568         int ret;
1569
1570         ret = parse_events_lex_init_extra(start_token, &scanner);
1571         if (ret)
1572                 return ret;
1573
1574         buffer = parse_events__scan_string(str, scanner);
1575
1576 #ifdef PARSER_DEBUG
1577         parse_events_debug = 1;
1578 #endif
1579         ret = parse_events_parse(data, scanner);
1580
1581         parse_events__flush_buffer(buffer, scanner);
1582         parse_events__delete_buffer(buffer, scanner);
1583         parse_events_lex_destroy(scanner);
1584         return ret;
1585 }
1586
1587 /*
1588  * parse event config string, return a list of event terms.
1589  */
1590 int parse_events_terms(struct list_head *terms, const char *str)
1591 {
1592         struct parse_events_terms data = {
1593                 .terms = NULL,
1594         };
1595         int ret;
1596
1597         ret = parse_events__scanner(str, &data, PE_START_TERMS);
1598         if (!ret) {
1599                 list_splice(data.terms, terms);
1600                 zfree(&data.terms);
1601                 return 0;
1602         }
1603
1604         parse_events_terms__delete(data.terms);
1605         return ret;
1606 }
1607
1608 int parse_events(struct perf_evlist *evlist, const char *str,
1609                  struct parse_events_error *err)
1610 {
1611         struct parse_events_evlist data = {
1612                 .list   = LIST_HEAD_INIT(data.list),
1613                 .idx    = evlist->nr_entries,
1614                 .error  = err,
1615                 .evlist = evlist,
1616         };
1617         int ret;
1618
1619         ret = parse_events__scanner(str, &data, PE_START_EVENTS);
1620         perf_pmu__parse_cleanup();
1621         if (!ret) {
1622                 struct perf_evsel *last;
1623
1624                 if (list_empty(&data.list)) {
1625                         WARN_ONCE(true, "WARNING: event parser found nothing");
1626                         return -1;
1627                 }
1628
1629                 perf_evlist__splice_list_tail(evlist, &data.list);
1630                 evlist->nr_groups += data.nr_groups;
1631                 last = perf_evlist__last(evlist);
1632                 last->cmdline_group_boundary = true;
1633
1634                 return 0;
1635         }
1636
1637         /*
1638          * There are 2 users - builtin-record and builtin-test objects.
1639          * Both call perf_evlist__delete in case of error, so we dont
1640          * need to bother.
1641          */
1642         return ret;
1643 }
1644
1645 #define MAX_WIDTH 1000
1646 static int get_term_width(void)
1647 {
1648         struct winsize ws;
1649
1650         get_term_dimensions(&ws);
1651         return ws.ws_col > MAX_WIDTH ? MAX_WIDTH : ws.ws_col;
1652 }
1653
1654 static void parse_events_print_error(struct parse_events_error *err,
1655                                      const char *event)
1656 {
1657         const char *str = "invalid or unsupported event: ";
1658         char _buf[MAX_WIDTH];
1659         char *buf = (char *) event;
1660         int idx = 0;
1661
1662         if (err->str) {
1663                 /* -2 for extra '' in the final fprintf */
1664                 int width       = get_term_width() - 2;
1665                 int len_event   = strlen(event);
1666                 int len_str, max_len, cut = 0;
1667
1668                 /*
1669                  * Maximum error index indent, we will cut
1670                  * the event string if it's bigger.
1671                  */
1672                 int max_err_idx = 13;
1673
1674                 /*
1675                  * Let's be specific with the message when
1676                  * we have the precise error.
1677                  */
1678                 str     = "event syntax error: ";
1679                 len_str = strlen(str);
1680                 max_len = width - len_str;
1681
1682                 buf = _buf;
1683
1684                 /* We're cutting from the beginning. */
1685                 if (err->idx > max_err_idx)
1686                         cut = err->idx - max_err_idx;
1687
1688                 strncpy(buf, event + cut, max_len);
1689
1690                 /* Mark cut parts with '..' on both sides. */
1691                 if (cut)
1692                         buf[0] = buf[1] = '.';
1693
1694                 if ((len_event - cut) > max_len) {
1695                         buf[max_len - 1] = buf[max_len - 2] = '.';
1696                         buf[max_len] = 0;
1697                 }
1698
1699                 idx = len_str + err->idx - cut;
1700         }
1701
1702         fprintf(stderr, "%s'%s'\n", str, buf);
1703         if (idx) {
1704                 fprintf(stderr, "%*s\\___ %s\n", idx + 1, "", err->str);
1705                 if (err->help)
1706                         fprintf(stderr, "\n%s\n", err->help);
1707                 free(err->str);
1708                 free(err->help);
1709         }
1710
1711         fprintf(stderr, "Run 'perf list' for a list of valid events\n");
1712 }
1713
1714 #undef MAX_WIDTH
1715
1716 int parse_events_option(const struct option *opt, const char *str,
1717                         int unset __maybe_unused)
1718 {
1719         struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
1720         struct parse_events_error err = { .idx = 0, };
1721         int ret = parse_events(evlist, str, &err);
1722
1723         if (ret)
1724                 parse_events_print_error(&err, str);
1725
1726         return ret;
1727 }
1728
1729 static int
1730 foreach_evsel_in_last_glob(struct perf_evlist *evlist,
1731                            int (*func)(struct perf_evsel *evsel,
1732                                        const void *arg),
1733                            const void *arg)
1734 {
1735         struct perf_evsel *last = NULL;
1736         int err;
1737
1738         /*
1739          * Don't return when list_empty, give func a chance to report
1740          * error when it found last == NULL.
1741          *
1742          * So no need to WARN here, let *func do this.
1743          */
1744         if (evlist->nr_entries > 0)
1745                 last = perf_evlist__last(evlist);
1746
1747         do {
1748                 err = (*func)(last, arg);
1749                 if (err)
1750                         return -1;
1751                 if (!last)
1752                         return 0;
1753
1754                 if (last->node.prev == &evlist->entries)
1755                         return 0;
1756                 last = list_entry(last->node.prev, struct perf_evsel, node);
1757         } while (!last->cmdline_group_boundary);
1758
1759         return 0;
1760 }
1761
1762 static int set_filter(struct perf_evsel *evsel, const void *arg)
1763 {
1764         const char *str = arg;
1765         bool found = false;
1766         int nr_addr_filters = 0;
1767         struct perf_pmu *pmu = NULL;
1768
1769         if (evsel == NULL)
1770                 goto err;
1771
1772         if (evsel->attr.type == PERF_TYPE_TRACEPOINT) {
1773                 if (perf_evsel__append_tp_filter(evsel, str) < 0) {
1774                         fprintf(stderr,
1775                                 "not enough memory to hold filter string\n");
1776                         return -1;
1777                 }
1778
1779                 return 0;
1780         }
1781
1782         while ((pmu = perf_pmu__scan(pmu)) != NULL)
1783                 if (pmu->type == evsel->attr.type) {
1784                         found = true;
1785                         break;
1786                 }
1787
1788         if (found)
1789                 perf_pmu__scan_file(pmu, "nr_addr_filters",
1790                                     "%d", &nr_addr_filters);
1791
1792         if (!nr_addr_filters)
1793                 goto err;
1794
1795         if (perf_evsel__append_addr_filter(evsel, str) < 0) {
1796                 fprintf(stderr,
1797                         "not enough memory to hold filter string\n");
1798                 return -1;
1799         }
1800
1801         return 0;
1802
1803 err:
1804         fprintf(stderr,
1805                 "--filter option should follow a -e tracepoint or HW tracer option\n");
1806
1807         return -1;
1808 }
1809
1810 int parse_filter(const struct option *opt, const char *str,
1811                  int unset __maybe_unused)
1812 {
1813         struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
1814
1815         return foreach_evsel_in_last_glob(evlist, set_filter,
1816                                           (const void *)str);
1817 }
1818
1819 static int add_exclude_perf_filter(struct perf_evsel *evsel,
1820                                    const void *arg __maybe_unused)
1821 {
1822         char new_filter[64];
1823
1824         if (evsel == NULL || evsel->attr.type != PERF_TYPE_TRACEPOINT) {
1825                 fprintf(stderr,
1826                         "--exclude-perf option should follow a -e tracepoint option\n");
1827                 return -1;
1828         }
1829
1830         snprintf(new_filter, sizeof(new_filter), "common_pid != %d", getpid());
1831
1832         if (perf_evsel__append_tp_filter(evsel, new_filter) < 0) {
1833                 fprintf(stderr,
1834                         "not enough memory to hold filter string\n");
1835                 return -1;
1836         }
1837
1838         return 0;
1839 }
1840
1841 int exclude_perf(const struct option *opt,
1842                  const char *arg __maybe_unused,
1843                  int unset __maybe_unused)
1844 {
1845         struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
1846
1847         return foreach_evsel_in_last_glob(evlist, add_exclude_perf_filter,
1848                                           NULL);
1849 }
1850
1851 static const char * const event_type_descriptors[] = {
1852         "Hardware event",
1853         "Software event",
1854         "Tracepoint event",
1855         "Hardware cache event",
1856         "Raw hardware event descriptor",
1857         "Hardware breakpoint",
1858 };
1859
1860 static int cmp_string(const void *a, const void *b)
1861 {
1862         const char * const *as = a;
1863         const char * const *bs = b;
1864
1865         return strcmp(*as, *bs);
1866 }
1867
1868 /*
1869  * Print the events from <debugfs_mount_point>/tracing/events
1870  */
1871
1872 void print_tracepoint_events(const char *subsys_glob, const char *event_glob,
1873                              bool name_only)
1874 {
1875         DIR *sys_dir, *evt_dir;
1876         struct dirent *sys_dirent, *evt_dirent;
1877         char evt_path[MAXPATHLEN];
1878         char dir_path[MAXPATHLEN];
1879         char **evt_list = NULL;
1880         unsigned int evt_i = 0, evt_num = 0;
1881         bool evt_num_known = false;
1882
1883 restart:
1884         sys_dir = opendir(tracing_events_path);
1885         if (!sys_dir)
1886                 return;
1887
1888         if (evt_num_known) {
1889                 evt_list = zalloc(sizeof(char *) * evt_num);
1890                 if (!evt_list)
1891                         goto out_close_sys_dir;
1892         }
1893
1894         for_each_subsystem(sys_dir, sys_dirent) {
1895                 if (subsys_glob != NULL &&
1896                     !strglobmatch(sys_dirent->d_name, subsys_glob))
1897                         continue;
1898
1899                 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
1900                          sys_dirent->d_name);
1901                 evt_dir = opendir(dir_path);
1902                 if (!evt_dir)
1903                         continue;
1904
1905                 for_each_event(sys_dirent, evt_dir, evt_dirent) {
1906                         if (event_glob != NULL &&
1907                             !strglobmatch(evt_dirent->d_name, event_glob))
1908                                 continue;
1909
1910                         if (!evt_num_known) {
1911                                 evt_num++;
1912                                 continue;
1913                         }
1914
1915                         snprintf(evt_path, MAXPATHLEN, "%s:%s",
1916                                  sys_dirent->d_name, evt_dirent->d_name);
1917
1918                         evt_list[evt_i] = strdup(evt_path);
1919                         if (evt_list[evt_i] == NULL)
1920                                 goto out_close_evt_dir;
1921                         evt_i++;
1922                 }
1923                 closedir(evt_dir);
1924         }
1925         closedir(sys_dir);
1926
1927         if (!evt_num_known) {
1928                 evt_num_known = true;
1929                 goto restart;
1930         }
1931         qsort(evt_list, evt_num, sizeof(char *), cmp_string);
1932         evt_i = 0;
1933         while (evt_i < evt_num) {
1934                 if (name_only) {
1935                         printf("%s ", evt_list[evt_i++]);
1936                         continue;
1937                 }
1938                 printf("  %-50s [%s]\n", evt_list[evt_i++],
1939                                 event_type_descriptors[PERF_TYPE_TRACEPOINT]);
1940         }
1941         if (evt_num && pager_in_use())
1942                 printf("\n");
1943
1944 out_free:
1945         evt_num = evt_i;
1946         for (evt_i = 0; evt_i < evt_num; evt_i++)
1947                 zfree(&evt_list[evt_i]);
1948         zfree(&evt_list);
1949         return;
1950
1951 out_close_evt_dir:
1952         closedir(evt_dir);
1953 out_close_sys_dir:
1954         closedir(sys_dir);
1955
1956         printf("FATAL: not enough memory to print %s\n",
1957                         event_type_descriptors[PERF_TYPE_TRACEPOINT]);
1958         if (evt_list)
1959                 goto out_free;
1960 }
1961
1962 /*
1963  * Check whether event is in <debugfs_mount_point>/tracing/events
1964  */
1965
1966 int is_valid_tracepoint(const char *event_string)
1967 {
1968         DIR *sys_dir, *evt_dir;
1969         struct dirent *sys_dirent, *evt_dirent;
1970         char evt_path[MAXPATHLEN];
1971         char dir_path[MAXPATHLEN];
1972
1973         sys_dir = opendir(tracing_events_path);
1974         if (!sys_dir)
1975                 return 0;
1976
1977         for_each_subsystem(sys_dir, sys_dirent) {
1978
1979                 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
1980                          sys_dirent->d_name);
1981                 evt_dir = opendir(dir_path);
1982                 if (!evt_dir)
1983                         continue;
1984
1985                 for_each_event(sys_dirent, evt_dir, evt_dirent) {
1986                         snprintf(evt_path, MAXPATHLEN, "%s:%s",
1987                                  sys_dirent->d_name, evt_dirent->d_name);
1988                         if (!strcmp(evt_path, event_string)) {
1989                                 closedir(evt_dir);
1990                                 closedir(sys_dir);
1991                                 return 1;
1992                         }
1993                 }
1994                 closedir(evt_dir);
1995         }
1996         closedir(sys_dir);
1997         return 0;
1998 }
1999
2000 static bool is_event_supported(u8 type, unsigned config)
2001 {
2002         bool ret = true;
2003         int open_return;
2004         struct perf_evsel *evsel;
2005         struct perf_event_attr attr = {
2006                 .type = type,
2007                 .config = config,
2008                 .disabled = 1,
2009         };
2010         struct {
2011                 struct thread_map map;
2012                 int threads[1];
2013         } tmap = {
2014                 .map.nr  = 1,
2015                 .threads = { 0 },
2016         };
2017
2018         evsel = perf_evsel__new(&attr);
2019         if (evsel) {
2020                 open_return = perf_evsel__open(evsel, NULL, &tmap.map);
2021                 ret = open_return >= 0;
2022
2023                 if (open_return == -EACCES) {
2024                         /*
2025                          * This happens if the paranoid value
2026                          * /proc/sys/kernel/perf_event_paranoid is set to 2
2027                          * Re-run with exclude_kernel set; we don't do that
2028                          * by default as some ARM machines do not support it.
2029                          *
2030                          */
2031                         evsel->attr.exclude_kernel = 1;
2032                         ret = perf_evsel__open(evsel, NULL, &tmap.map) >= 0;
2033                 }
2034                 perf_evsel__delete(evsel);
2035         }
2036
2037         return ret;
2038 }
2039
2040 void print_sdt_events(const char *subsys_glob, const char *event_glob,
2041                       bool name_only)
2042 {
2043         struct probe_cache *pcache;
2044         struct probe_cache_entry *ent;
2045         struct strlist *bidlist, *sdtlist;
2046         struct strlist_config cfg = {.dont_dupstr = true};
2047         struct str_node *nd, *nd2;
2048         char *buf, *path, *ptr = NULL;
2049         bool show_detail = false;
2050         int ret;
2051
2052         sdtlist = strlist__new(NULL, &cfg);
2053         if (!sdtlist) {
2054                 pr_debug("Failed to allocate new strlist for SDT\n");
2055                 return;
2056         }
2057         bidlist = build_id_cache__list_all(true);
2058         if (!bidlist) {
2059                 pr_debug("Failed to get buildids: %d\n", errno);
2060                 return;
2061         }
2062         strlist__for_each_entry(nd, bidlist) {
2063                 pcache = probe_cache__new(nd->s);
2064                 if (!pcache)
2065                         continue;
2066                 list_for_each_entry(ent, &pcache->entries, node) {
2067                         if (!ent->sdt)
2068                                 continue;
2069                         if (subsys_glob &&
2070                             !strglobmatch(ent->pev.group, subsys_glob))
2071                                 continue;
2072                         if (event_glob &&
2073                             !strglobmatch(ent->pev.event, event_glob))
2074                                 continue;
2075                         ret = asprintf(&buf, "%s:%s@%s", ent->pev.group,
2076                                         ent->pev.event, nd->s);
2077                         if (ret > 0)
2078                                 strlist__add(sdtlist, buf);
2079                 }
2080                 probe_cache__delete(pcache);
2081         }
2082         strlist__delete(bidlist);
2083
2084         strlist__for_each_entry(nd, sdtlist) {
2085                 buf = strchr(nd->s, '@');
2086                 if (buf)
2087                         *(buf++) = '\0';
2088                 if (name_only) {
2089                         printf("%s ", nd->s);
2090                         continue;
2091                 }
2092                 nd2 = strlist__next(nd);
2093                 if (nd2) {
2094                         ptr = strchr(nd2->s, '@');
2095                         if (ptr)
2096                                 *ptr = '\0';
2097                         if (strcmp(nd->s, nd2->s) == 0)
2098                                 show_detail = true;
2099                 }
2100                 if (show_detail) {
2101                         path = build_id_cache__origname(buf);
2102                         ret = asprintf(&buf, "%s@%s(%.12s)", nd->s, path, buf);
2103                         if (ret > 0) {
2104                                 printf("  %-50s [%s]\n", buf, "SDT event");
2105                                 free(buf);
2106                         }
2107                         free(path);
2108                 } else
2109                         printf("  %-50s [%s]\n", nd->s, "SDT event");
2110                 if (nd2) {
2111                         if (strcmp(nd->s, nd2->s) != 0)
2112                                 show_detail = false;
2113                         if (ptr)
2114                                 *ptr = '@';
2115                 }
2116         }
2117         strlist__delete(sdtlist);
2118 }
2119
2120 int print_hwcache_events(const char *event_glob, bool name_only)
2121 {
2122         unsigned int type, op, i, evt_i = 0, evt_num = 0;
2123         char name[64];
2124         char **evt_list = NULL;
2125         bool evt_num_known = false;
2126
2127 restart:
2128         if (evt_num_known) {
2129                 evt_list = zalloc(sizeof(char *) * evt_num);
2130                 if (!evt_list)
2131                         goto out_enomem;
2132         }
2133
2134         for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) {
2135                 for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) {
2136                         /* skip invalid cache type */
2137                         if (!perf_evsel__is_cache_op_valid(type, op))
2138                                 continue;
2139
2140                         for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) {
2141                                 __perf_evsel__hw_cache_type_op_res_name(type, op, i,
2142                                                                         name, sizeof(name));
2143                                 if (event_glob != NULL && !strglobmatch(name, event_glob))
2144                                         continue;
2145
2146                                 if (!is_event_supported(PERF_TYPE_HW_CACHE,
2147                                                         type | (op << 8) | (i << 16)))
2148                                         continue;
2149
2150                                 if (!evt_num_known) {
2151                                         evt_num++;
2152                                         continue;
2153                                 }
2154
2155                                 evt_list[evt_i] = strdup(name);
2156                                 if (evt_list[evt_i] == NULL)
2157                                         goto out_enomem;
2158                                 evt_i++;
2159                         }
2160                 }
2161         }
2162
2163         if (!evt_num_known) {
2164                 evt_num_known = true;
2165                 goto restart;
2166         }
2167         qsort(evt_list, evt_num, sizeof(char *), cmp_string);
2168         evt_i = 0;
2169         while (evt_i < evt_num) {
2170                 if (name_only) {
2171                         printf("%s ", evt_list[evt_i++]);
2172                         continue;
2173                 }
2174                 printf("  %-50s [%s]\n", evt_list[evt_i++],
2175                                 event_type_descriptors[PERF_TYPE_HW_CACHE]);
2176         }
2177         if (evt_num && pager_in_use())
2178                 printf("\n");
2179
2180 out_free:
2181         evt_num = evt_i;
2182         for (evt_i = 0; evt_i < evt_num; evt_i++)
2183                 zfree(&evt_list[evt_i]);
2184         zfree(&evt_list);
2185         return evt_num;
2186
2187 out_enomem:
2188         printf("FATAL: not enough memory to print %s\n", event_type_descriptors[PERF_TYPE_HW_CACHE]);
2189         if (evt_list)
2190                 goto out_free;
2191         return evt_num;
2192 }
2193
2194 void print_symbol_events(const char *event_glob, unsigned type,
2195                                 struct event_symbol *syms, unsigned max,
2196                                 bool name_only)
2197 {
2198         unsigned int i, evt_i = 0, evt_num = 0;
2199         char name[MAX_NAME_LEN];
2200         char **evt_list = NULL;
2201         bool evt_num_known = false;
2202
2203 restart:
2204         if (evt_num_known) {
2205                 evt_list = zalloc(sizeof(char *) * evt_num);
2206                 if (!evt_list)
2207                         goto out_enomem;
2208                 syms -= max;
2209         }
2210
2211         for (i = 0; i < max; i++, syms++) {
2212
2213                 if (event_glob != NULL && syms->symbol != NULL &&
2214                     !(strglobmatch(syms->symbol, event_glob) ||
2215                       (syms->alias && strglobmatch(syms->alias, event_glob))))
2216                         continue;
2217
2218                 if (!is_event_supported(type, i))
2219                         continue;
2220
2221                 if (!evt_num_known) {
2222                         evt_num++;
2223                         continue;
2224                 }
2225
2226                 if (!name_only && strlen(syms->alias))
2227                         snprintf(name, MAX_NAME_LEN, "%s OR %s", syms->symbol, syms->alias);
2228                 else
2229                         strlcpy(name, syms->symbol, MAX_NAME_LEN);
2230
2231                 evt_list[evt_i] = strdup(name);
2232                 if (evt_list[evt_i] == NULL)
2233                         goto out_enomem;
2234                 evt_i++;
2235         }
2236
2237         if (!evt_num_known) {
2238                 evt_num_known = true;
2239                 goto restart;
2240         }
2241         qsort(evt_list, evt_num, sizeof(char *), cmp_string);
2242         evt_i = 0;
2243         while (evt_i < evt_num) {
2244                 if (name_only) {
2245                         printf("%s ", evt_list[evt_i++]);
2246                         continue;
2247                 }
2248                 printf("  %-50s [%s]\n", evt_list[evt_i++], event_type_descriptors[type]);
2249         }
2250         if (evt_num && pager_in_use())
2251                 printf("\n");
2252
2253 out_free:
2254         evt_num = evt_i;
2255         for (evt_i = 0; evt_i < evt_num; evt_i++)
2256                 zfree(&evt_list[evt_i]);
2257         zfree(&evt_list);
2258         return;
2259
2260 out_enomem:
2261         printf("FATAL: not enough memory to print %s\n", event_type_descriptors[type]);
2262         if (evt_list)
2263                 goto out_free;
2264 }
2265
2266 /*
2267  * Print the help text for the event symbols:
2268  */
2269 void print_events(const char *event_glob, bool name_only, bool quiet_flag,
2270                         bool long_desc)
2271 {
2272         print_symbol_events(event_glob, PERF_TYPE_HARDWARE,
2273                             event_symbols_hw, PERF_COUNT_HW_MAX, name_only);
2274
2275         print_symbol_events(event_glob, PERF_TYPE_SOFTWARE,
2276                             event_symbols_sw, PERF_COUNT_SW_MAX, name_only);
2277
2278         print_hwcache_events(event_glob, name_only);
2279
2280         print_pmu_events(event_glob, name_only, quiet_flag, long_desc);
2281
2282         if (event_glob != NULL)
2283                 return;
2284
2285         if (!name_only) {
2286                 printf("  %-50s [%s]\n",
2287                        "rNNN",
2288                        event_type_descriptors[PERF_TYPE_RAW]);
2289                 printf("  %-50s [%s]\n",
2290                        "cpu/t1=v1[,t2=v2,t3 ...]/modifier",
2291                        event_type_descriptors[PERF_TYPE_RAW]);
2292                 if (pager_in_use())
2293                         printf("   (see 'man perf-list' on how to encode it)\n\n");
2294
2295                 printf("  %-50s [%s]\n",
2296                        "mem:<addr>[/len][:access]",
2297                         event_type_descriptors[PERF_TYPE_BREAKPOINT]);
2298                 if (pager_in_use())
2299                         printf("\n");
2300         }
2301
2302         print_tracepoint_events(NULL, NULL, name_only);
2303
2304         print_sdt_events(NULL, NULL, name_only);
2305 }
2306
2307 int parse_events__is_hardcoded_term(struct parse_events_term *term)
2308 {
2309         return term->type_term != PARSE_EVENTS__TERM_TYPE_USER;
2310 }
2311
2312 static int new_term(struct parse_events_term **_term, int type_val,
2313                     int type_term, char *config,
2314                     char *str, u64 num, int err_term, int err_val)
2315 {
2316         struct parse_events_term *term;
2317
2318         term = zalloc(sizeof(*term));
2319         if (!term)
2320                 return -ENOMEM;
2321
2322         INIT_LIST_HEAD(&term->list);
2323         term->type_val  = type_val;
2324         term->type_term = type_term;
2325         term->config = config;
2326         term->err_term = err_term;
2327         term->err_val  = err_val;
2328
2329         switch (type_val) {
2330         case PARSE_EVENTS__TERM_TYPE_NUM:
2331                 term->val.num = num;
2332                 break;
2333         case PARSE_EVENTS__TERM_TYPE_STR:
2334                 term->val.str = str;
2335                 break;
2336         default:
2337                 free(term);
2338                 return -EINVAL;
2339         }
2340
2341         *_term = term;
2342         return 0;
2343 }
2344
2345 int parse_events_term__num(struct parse_events_term **term,
2346                            int type_term, char *config, u64 num,
2347                            void *loc_term_, void *loc_val_)
2348 {
2349         YYLTYPE *loc_term = loc_term_;
2350         YYLTYPE *loc_val = loc_val_;
2351
2352         return new_term(term, PARSE_EVENTS__TERM_TYPE_NUM, type_term,
2353                         config, NULL, num,
2354                         loc_term ? loc_term->first_column : 0,
2355                         loc_val ? loc_val->first_column : 0);
2356 }
2357
2358 int parse_events_term__str(struct parse_events_term **term,
2359                            int type_term, char *config, char *str,
2360                            void *loc_term_, void *loc_val_)
2361 {
2362         YYLTYPE *loc_term = loc_term_;
2363         YYLTYPE *loc_val = loc_val_;
2364
2365         return new_term(term, PARSE_EVENTS__TERM_TYPE_STR, type_term,
2366                         config, str, 0,
2367                         loc_term ? loc_term->first_column : 0,
2368                         loc_val ? loc_val->first_column : 0);
2369 }
2370
2371 int parse_events_term__sym_hw(struct parse_events_term **term,
2372                               char *config, unsigned idx)
2373 {
2374         struct event_symbol *sym;
2375
2376         BUG_ON(idx >= PERF_COUNT_HW_MAX);
2377         sym = &event_symbols_hw[idx];
2378
2379         if (config)
2380                 return new_term(term, PARSE_EVENTS__TERM_TYPE_STR,
2381                                 PARSE_EVENTS__TERM_TYPE_USER, config,
2382                                 (char *) sym->symbol, 0, 0, 0);
2383         else
2384                 return new_term(term, PARSE_EVENTS__TERM_TYPE_STR,
2385                                 PARSE_EVENTS__TERM_TYPE_USER,
2386                                 (char *) "event", (char *) sym->symbol,
2387                                 0, 0, 0);
2388 }
2389
2390 int parse_events_term__clone(struct parse_events_term **new,
2391                              struct parse_events_term *term)
2392 {
2393         return new_term(new, term->type_val, term->type_term, term->config,
2394                         term->val.str, term->val.num,
2395                         term->err_term, term->err_val);
2396 }
2397
2398 void parse_events_terms__purge(struct list_head *terms)
2399 {
2400         struct parse_events_term *term, *h;
2401
2402         list_for_each_entry_safe(term, h, terms, list) {
2403                 if (term->array.nr_ranges)
2404                         free(term->array.ranges);
2405                 list_del_init(&term->list);
2406                 free(term);
2407         }
2408 }
2409
2410 void parse_events_terms__delete(struct list_head *terms)
2411 {
2412         if (!terms)
2413                 return;
2414         parse_events_terms__purge(terms);
2415         free(terms);
2416 }
2417
2418 void parse_events__clear_array(struct parse_events_array *a)
2419 {
2420         free(a->ranges);
2421 }
2422
2423 void parse_events_evlist_error(struct parse_events_evlist *data,
2424                                int idx, const char *str)
2425 {
2426         struct parse_events_error *err = data->error;
2427
2428         if (!err)
2429                 return;
2430         err->idx = idx;
2431         err->str = strdup(str);
2432         WARN_ONCE(!err->str, "WARNING: failed to allocate error string");
2433 }
2434
2435 static void config_terms_list(char *buf, size_t buf_sz)
2436 {
2437         int i;
2438         bool first = true;
2439
2440         buf[0] = '\0';
2441         for (i = 0; i < __PARSE_EVENTS__TERM_TYPE_NR; i++) {
2442                 const char *name = config_term_names[i];
2443
2444                 if (!config_term_avail(i, NULL))
2445                         continue;
2446                 if (!name)
2447                         continue;
2448                 if (name[0] == '<')
2449                         continue;
2450
2451                 if (strlen(buf) + strlen(name) + 2 >= buf_sz)
2452                         return;
2453
2454                 if (!first)
2455                         strcat(buf, ",");
2456                 else
2457                         first = false;
2458                 strcat(buf, name);
2459         }
2460 }
2461
2462 /*
2463  * Return string contains valid config terms of an event.
2464  * @additional_terms: For terms such as PMU sysfs terms.
2465  */
2466 char *parse_events_formats_error_string(char *additional_terms)
2467 {
2468         char *str;
2469         /* "no-overwrite" is the longest name */
2470         char static_terms[__PARSE_EVENTS__TERM_TYPE_NR *
2471                           (sizeof("no-overwrite") - 1)];
2472
2473         config_terms_list(static_terms, sizeof(static_terms));
2474         /* valid terms */
2475         if (additional_terms) {
2476                 if (asprintf(&str, "valid terms: %s,%s",
2477                              additional_terms, static_terms) < 0)
2478                         goto fail;
2479         } else {
2480                 if (asprintf(&str, "valid terms: %s", static_terms) < 0)
2481                         goto fail;
2482         }
2483         return str;
2484
2485 fail:
2486         return NULL;
2487 }