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 #include "util/parse-branch-options.h"
  26
  27 #define MAX_NAME_LEN 100
  28
  29 #ifdef PARSER_DEBUG
  30 extern int parse_events_debug;
  31 #endif
  32 int parse_events_parse(void *data, void *scanner);
  33 static int get_config_terms(struct list_head *head_config,
  34                             struct list_head *head_terms __maybe_unused);
  35
  36 static struct perf_pmu_event_symbol *perf_pmu_events_list;
  37 /*
  38  * The variable indicates the number of supported pmu event symbols.
  39  * 0 means not initialized and ready to init
  40  * -1 means failed to init, don't try anymore
  41  * >0 is the number of supported pmu event symbols
  42  */
  43 static int perf_pmu_events_list_num;
  44
  45 struct event_symbol event_symbols_hw[PERF_COUNT_HW_MAX] = {
  46         [PERF_COUNT_HW_CPU_CYCLES] = {
  47                 .symbol = "cpu-cycles",
  48                 .alias  = "cycles",
  49         },
  50         [PERF_COUNT_HW_INSTRUCTIONS] = {
  51                 .symbol = "instructions",
  52                 .alias  = "",
  53         },
  54         [PERF_COUNT_HW_CACHE_REFERENCES] = {
  55                 .symbol = "cache-references",
  56                 .alias  = "",
  57         },
  58         [PERF_COUNT_HW_CACHE_MISSES] = {
  59                 .symbol = "cache-misses",
  60                 .alias  = "",
  61         },
  62         [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = {
  63                 .symbol = "branch-instructions",
  64                 .alias  = "branches",
  65         },
  66         [PERF_COUNT_HW_BRANCH_MISSES] = {
  67                 .symbol = "branch-misses",
  68                 .alias  = "",
  69         },
  70         [PERF_COUNT_HW_BUS_CYCLES] = {
  71                 .symbol = "bus-cycles",
  72                 .alias  = "",
  73         },
  74         [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = {
  75                 .symbol = "stalled-cycles-frontend",
  76                 .alias  = "idle-cycles-frontend",
  77         },
  78         [PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = {
  79                 .symbol = "stalled-cycles-backend",
  80                 .alias  = "idle-cycles-backend",
  81         },
  82         [PERF_COUNT_HW_REF_CPU_CYCLES] = {
  83                 .symbol = "ref-cycles",
  84                 .alias  = "",
  85         },
  86 };
  87
  88 struct event_symbol event_symbols_sw[PERF_COUNT_SW_MAX] = {
  89         [PERF_COUNT_SW_CPU_CLOCK] = {
  90                 .symbol = "cpu-clock",
  91                 .alias  = "",
  92         },
  93         [PERF_COUNT_SW_TASK_CLOCK] = {
  94                 .symbol = "task-clock",
  95                 .alias  = "",
  96         },
  97         [PERF_COUNT_SW_PAGE_FAULTS] = {
  98                 .symbol = "page-faults",
  99                 .alias  = "faults",
 100         },
 101         [PERF_COUNT_SW_CONTEXT_SWITCHES] = {
 102                 .symbol = "context-switches",
 103                 .alias  = "cs",
 104         },
 105         [PERF_COUNT_SW_CPU_MIGRATIONS] = {
 106                 .symbol = "cpu-migrations",
 107                 .alias  = "migrations",
 108         },
 109         [PERF_COUNT_SW_PAGE_FAULTS_MIN] = {
 110                 .symbol = "minor-faults",
 111                 .alias  = "",
 112         },
 113         [PERF_COUNT_SW_PAGE_FAULTS_MAJ] = {
 114                 .symbol = "major-faults",
 115                 .alias  = "",
 116         },
 117         [PERF_COUNT_SW_ALIGNMENT_FAULTS] = {
 118                 .symbol = "alignment-faults",
 119                 .alias  = "",
 120         },
 121         [PERF_COUNT_SW_EMULATION_FAULTS] = {
 122                 .symbol = "emulation-faults",
 123                 .alias  = "",
 124         },
 125         [PERF_COUNT_SW_DUMMY] = {
 126                 .symbol = "dummy",
 127                 .alias  = "",
 128         },
 129         [PERF_COUNT_SW_BPF_OUTPUT] = {
 130                 .symbol = "bpf-output",
 131                 .alias  = "",
 132         },
 133 };
 134
 135 #define __PERF_EVENT_FIELD(config, name) \
 136         ((config & PERF_EVENT_##name##_MASK) >> PERF_EVENT_##name##_SHIFT)
 137
 138 #define PERF_EVENT_RAW(config)          __PERF_EVENT_FIELD(config, RAW)
 139 #define PERF_EVENT_CONFIG(config)       __PERF_EVENT_FIELD(config, CONFIG)
 140 #define PERF_EVENT_TYPE(config)         __PERF_EVENT_FIELD(config, TYPE)
 141 #define PERF_EVENT_ID(config)           __PERF_EVENT_FIELD(config, EVENT)
 142
 143 #define for_each_subsystem(sys_dir, sys_dirent)                 \
 144         while ((sys_dirent = readdir(sys_dir)) != NULL)         \
 145                 if (sys_dirent->d_type == DT_DIR &&             \
 146                     (strcmp(sys_dirent->d_name, ".")) &&        \
 147                     (strcmp(sys_dirent->d_name, "..")))
 148
 149 static int tp_event_has_id(struct dirent *sys_dir, struct dirent *evt_dir)
 150 {
 151         char evt_path[MAXPATHLEN];
 152         int fd;
 153
 154         snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", tracing_events_path,
 155                         sys_dir->d_name, evt_dir->d_name);
 156         fd = open(evt_path, O_RDONLY);
 157         if (fd < 0)
 158                 return -EINVAL;
 159         close(fd);
 160
 161         return 0;
 162 }
 163
 164 #define for_each_event(sys_dirent, evt_dir, evt_dirent)         \
 165         while ((evt_dirent = readdir(evt_dir)) != NULL)         \
 166                 if (evt_dirent->d_type == DT_DIR &&             \
 167                     (strcmp(evt_dirent->d_name, ".")) &&        \
 168                     (strcmp(evt_dirent->d_name, "..")) &&       \
 169                     (!tp_event_has_id(sys_dirent, evt_dirent)))
 170
 171 #define MAX_EVENT_LENGTH 512
 172
 173
 174 struct tracepoint_path *tracepoint_id_to_path(u64 config)
 175 {
 176         struct tracepoint_path *path = NULL;
 177         DIR *sys_dir, *evt_dir;
 178         struct dirent *sys_dirent, *evt_dirent;
 179         char id_buf[24];
 180         int fd;
 181         u64 id;
 182         char evt_path[MAXPATHLEN];
 183         char dir_path[MAXPATHLEN];
 184
 185         sys_dir = opendir(tracing_events_path);
 186         if (!sys_dir)
 187                 return NULL;
 188
 189         for_each_subsystem(sys_dir, sys_dirent) {
 190
 191                 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
 192                          sys_dirent->d_name);
 193                 evt_dir = opendir(dir_path);
 194                 if (!evt_dir)
 195                         continue;
 196
 197                 for_each_event(sys_dirent, evt_dir, evt_dirent) {
 198
 199                         snprintf(evt_path, MAXPATHLEN, "%s/%s/id", dir_path,
 200                                  evt_dirent->d_name);
 201                         fd = open(evt_path, O_RDONLY);
 202                         if (fd < 0)
 203                                 continue;
 204                         if (read(fd, id_buf, sizeof(id_buf)) < 0) {
 205                                 close(fd);
 206                                 continue;
 207                         }
 208                         close(fd);
 209                         id = atoll(id_buf);
 210                         if (id == config) {
 211                                 closedir(evt_dir);
 212                                 closedir(sys_dir);
 213                                 path = zalloc(sizeof(*path));
 214                                 path->system = malloc(MAX_EVENT_LENGTH);
 215                                 if (!path->system) {
 216                                         free(path);
 217                                         return NULL;
 218                                 }
 219                                 path->name = malloc(MAX_EVENT_LENGTH);
 220                                 if (!path->name) {
 221                                         zfree(&path->system);
 222                                         free(path);
 223                                         return NULL;
 224                                 }
 225                                 strncpy(path->system, sys_dirent->d_name,
 226                                         MAX_EVENT_LENGTH);
 227                                 strncpy(path->name, evt_dirent->d_name,
 228                                         MAX_EVENT_LENGTH);
 229                                 return path;
 230                         }
 231                 }
 232                 closedir(evt_dir);
 233         }
 234
 235         closedir(sys_dir);
 236         return NULL;
 237 }
 238
 239 struct tracepoint_path *tracepoint_name_to_path(const char *name)
 240 {
 241         struct tracepoint_path *path = zalloc(sizeof(*path));
 242         char *str = strchr(name, ':');
 243
 244         if (path == NULL || str == NULL) {
 245                 free(path);
 246                 return NULL;
 247         }
 248
 249         path->system = strndup(name, str - name);
 250         path->name = strdup(str+1);
 251
 252         if (path->system == NULL || path->name == NULL) {
 253                 zfree(&path->system);
 254                 zfree(&path->name);
 255                 free(path);
 256                 path = NULL;
 257         }
 258
 259         return path;
 260 }
 261
 262 const char *event_type(int type)
 263 {
 264         switch (type) {
 265         case PERF_TYPE_HARDWARE:
 266                 return "hardware";
 267
 268         case PERF_TYPE_SOFTWARE:
 269                 return "software";
 270
 271         case PERF_TYPE_TRACEPOINT:
 272                 return "tracepoint";
 273
 274         case PERF_TYPE_HW_CACHE:
 275                 return "hardware-cache";
 276
 277         default:
 278                 break;
 279         }
 280
 281         return "unknown";
 282 }
 283
 284 static int parse_events__is_name_term(struct parse_events_term *term)
 285 {
 286         return term->type_term == PARSE_EVENTS__TERM_TYPE_NAME;
 287 }
 288
 289 static char *get_config_name(struct list_head *head_terms)
 290 {
 291         struct parse_events_term *term;
 292
 293         if (!head_terms)
 294                 return NULL;
 295
 296         list_for_each_entry(term, head_terms, list)
 297                 if (parse_events__is_name_term(term))
 298                         return term->val.str;
 299
 300         return NULL;
 301 }
 302
 303 static struct perf_evsel *
 304 __add_event(struct list_head *list, int *idx,
 305             struct perf_event_attr *attr,
 306             char *name, struct cpu_map *cpus,
 307             struct list_head *config_terms)
 308 {
 309         struct perf_evsel *evsel;
 310
 311         event_attr_init(attr);
 312
 313         evsel = perf_evsel__new_idx(attr, (*idx)++);
 314         if (!evsel)
 315                 return NULL;
 316
 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                 CHECK_TYPE_VAL(STR);
 978                 if (strcmp(term->val.str, "no") &&
 979                     parse_branch_str(term->val.str, &attr->branch_sample_type)) {
 980                         err->str = strdup("invalid branch sample type");
 981                         err->idx = term->err_val;
 982                         return -EINVAL;
 983                 }
 984                 break;
 985         case PARSE_EVENTS__TERM_TYPE_TIME:
 986                 CHECK_TYPE_VAL(NUM);
 987                 if (term->val.num > 1) {
 988                         err->str = strdup("expected 0 or 1");
 989                         err->idx = term->err_val;
 990                         return -EINVAL;
 991                 }
 992                 break;
 993         case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
 994                 CHECK_TYPE_VAL(STR);
 995                 break;
 996         case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
 997                 CHECK_TYPE_VAL(NUM);
 998                 break;
 999         case PARSE_EVENTS__TERM_TYPE_INHERIT:
1000                 CHECK_TYPE_VAL(NUM);
1001                 break;
1002         case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1003                 CHECK_TYPE_VAL(NUM);
1004                 break;
1005         case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1006                 CHECK_TYPE_VAL(NUM);
1007                 break;
1008         case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1009                 CHECK_TYPE_VAL(NUM);
1010                 break;
1011         case PARSE_EVENTS__TERM_TYPE_NAME:
1012                 CHECK_TYPE_VAL(STR);
1013                 break;
1014         case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1015                 CHECK_TYPE_VAL(NUM);
1016                 break;
1017         default:
1018                 err->str = strdup("unknown term");
1019                 err->idx = term->err_term;
1020                 err->help = parse_events_formats_error_string(NULL);
1021                 return -EINVAL;
1022         }
1023
1024         /*
1025          * Check term availbility after basic checking so
1026          * PARSE_EVENTS__TERM_TYPE_USER can be found and filtered.
1027          *
1028          * If check availbility at the entry of this function,
1029          * user will see "'<sysfs term>' is not usable in 'perf stat'"
1030          * if an invalid config term is provided for legacy events
1031          * (for example, instructions/badterm/...), which is confusing.
1032          */
1033         if (!config_term_avail(term->type_term, err))
1034                 return -EINVAL;
1035         return 0;
1036 #undef CHECK_TYPE_VAL
1037 }
1038
1039 static int config_term_pmu(struct perf_event_attr *attr,
1040                            struct parse_events_term *term,
1041                            struct parse_events_error *err)
1042 {
1043         if (term->type_term == PARSE_EVENTS__TERM_TYPE_USER ||
1044             term->type_term == PARSE_EVENTS__TERM_TYPE_DRV_CFG)
1045                 /*
1046                  * Always succeed for sysfs terms, as we dont know
1047                  * at this point what type they need to have.
1048                  */
1049                 return 0;
1050         else
1051                 return config_term_common(attr, term, err);
1052 }
1053
1054 static int config_term_tracepoint(struct perf_event_attr *attr,
1055                                   struct parse_events_term *term,
1056                                   struct parse_events_error *err)
1057 {
1058         switch (term->type_term) {
1059         case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
1060         case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1061         case PARSE_EVENTS__TERM_TYPE_INHERIT:
1062         case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1063         case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1064         case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1065         case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1066                 return config_term_common(attr, term, err);
1067         default:
1068                 if (err) {
1069                         err->idx = term->err_term;
1070                         err->str = strdup("unknown term");
1071                         err->help = strdup("valid terms: call-graph,stack-size\n");
1072                 }
1073                 return -EINVAL;
1074         }
1075
1076         return 0;
1077 }
1078
1079 static int config_attr(struct perf_event_attr *attr,
1080                        struct list_head *head,
1081                        struct parse_events_error *err,
1082                        config_term_func_t config_term)
1083 {
1084         struct parse_events_term *term;
1085
1086         list_for_each_entry(term, head, list)
1087                 if (config_term(attr, term, err))
1088                         return -EINVAL;
1089
1090         return 0;
1091 }
1092
1093 static int get_config_terms(struct list_head *head_config,
1094                             struct list_head *head_terms __maybe_unused)
1095 {
1096 #define ADD_CONFIG_TERM(__type, __name, __val)                  \
1097 do {                                                            \
1098         struct perf_evsel_config_term *__t;                     \
1099                                                                 \
1100         __t = zalloc(sizeof(*__t));                             \
1101         if (!__t)                                               \
1102                 return -ENOMEM;                                 \
1103                                                                 \
1104         INIT_LIST_HEAD(&__t->list);                             \
1105         __t->type       = PERF_EVSEL__CONFIG_TERM_ ## __type;   \
1106         __t->val.__name = __val;                                \
1107         list_add_tail(&__t->list, head_terms);                  \
1108 } while (0)
1109
1110         struct parse_events_term *term;
1111
1112         list_for_each_entry(term, head_config, list) {
1113                 switch (term->type_term) {
1114                 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
1115                         ADD_CONFIG_TERM(PERIOD, period, term->val.num);
1116                         break;
1117                 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
1118                         ADD_CONFIG_TERM(FREQ, freq, term->val.num);
1119                         break;
1120                 case PARSE_EVENTS__TERM_TYPE_TIME:
1121                         ADD_CONFIG_TERM(TIME, time, term->val.num);
1122                         break;
1123                 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
1124                         ADD_CONFIG_TERM(CALLGRAPH, callgraph, term->val.str);
1125                         break;
1126                 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
1127                         ADD_CONFIG_TERM(BRANCH, branch, term->val.str);
1128                         break;
1129                 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1130                         ADD_CONFIG_TERM(STACK_USER, stack_user, term->val.num);
1131                         break;
1132                 case PARSE_EVENTS__TERM_TYPE_INHERIT:
1133                         ADD_CONFIG_TERM(INHERIT, inherit, term->val.num ? 1 : 0);
1134                         break;
1135                 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1136                         ADD_CONFIG_TERM(INHERIT, inherit, term->val.num ? 0 : 1);
1137                         break;
1138                 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1139                         ADD_CONFIG_TERM(MAX_STACK, max_stack, term->val.num);
1140                         break;
1141                 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1142                         ADD_CONFIG_TERM(OVERWRITE, overwrite, term->val.num ? 1 : 0);
1143                         break;
1144                 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1145                         ADD_CONFIG_TERM(OVERWRITE, overwrite, term->val.num ? 0 : 1);
1146                         break;
1147                 case PARSE_EVENTS__TERM_TYPE_DRV_CFG:
1148                         ADD_CONFIG_TERM(DRV_CFG, drv_cfg, term->val.str);
1149                         break;
1150                 default:
1151                         break;
1152                 }
1153         }
1154 #undef ADD_EVSEL_CONFIG
1155         return 0;
1156 }
1157
1158 int parse_events_add_tracepoint(struct list_head *list, int *idx,
1159                                 const char *sys, const char *event,
1160                                 struct parse_events_error *err,
1161                                 struct list_head *head_config)
1162 {
1163         if (head_config) {
1164                 struct perf_event_attr attr;
1165
1166                 if (config_attr(&attr, head_config, err,
1167                                 config_term_tracepoint))
1168                         return -EINVAL;
1169         }
1170
1171         if (strpbrk(sys, "*?"))
1172                 return add_tracepoint_multi_sys(list, idx, sys, event,
1173                                                 err, head_config);
1174         else
1175                 return add_tracepoint_event(list, idx, sys, event,
1176                                             err, head_config);
1177 }
1178
1179 int parse_events_add_numeric(struct parse_events_evlist *data,
1180                              struct list_head *list,
1181                              u32 type, u64 config,
1182                              struct list_head *head_config)
1183 {
1184         struct perf_event_attr attr;
1185         LIST_HEAD(config_terms);
1186
1187         memset(&attr, 0, sizeof(attr));
1188         attr.type = type;
1189         attr.config = config;
1190
1191         if (head_config) {
1192                 if (config_attr(&attr, head_config, data->error,
1193                                 config_term_common))
1194                         return -EINVAL;
1195
1196                 if (get_config_terms(head_config, &config_terms))
1197                         return -ENOMEM;
1198         }
1199
1200         return add_event(list, &data->idx, &attr,
1201                          get_config_name(head_config), &config_terms);
1202 }
1203
1204 int parse_events_add_pmu(struct parse_events_evlist *data,
1205                          struct list_head *list, char *name,
1206                          struct list_head *head_config)
1207 {
1208         struct perf_event_attr attr;
1209         struct perf_pmu_info info;
1210         struct perf_pmu *pmu;
1211         struct perf_evsel *evsel;
1212         LIST_HEAD(config_terms);
1213
1214         pmu = perf_pmu__find(name);
1215         if (!pmu)
1216                 return -EINVAL;
1217
1218         if (pmu->default_config) {
1219                 memcpy(&attr, pmu->default_config,
1220                        sizeof(struct perf_event_attr));
1221         } else {
1222                 memset(&attr, 0, sizeof(attr));
1223         }
1224
1225         if (!head_config) {
1226                 attr.type = pmu->type;
1227                 evsel = __add_event(list, &data->idx, &attr, NULL, pmu->cpus, NULL);
1228                 return evsel ? 0 : -ENOMEM;
1229         }
1230
1231         if (perf_pmu__check_alias(pmu, head_config, &info))
1232                 return -EINVAL;
1233
1234         /*
1235          * Configure hardcoded terms first, no need to check
1236          * return value when called with fail == 0 ;)
1237          */
1238         if (config_attr(&attr, head_config, data->error, config_term_pmu))
1239                 return -EINVAL;
1240
1241         if (get_config_terms(head_config, &config_terms))
1242                 return -ENOMEM;
1243
1244         if (perf_pmu__config(pmu, &attr, head_config, data->error))
1245                 return -EINVAL;
1246
1247         evsel = __add_event(list, &data->idx, &attr,
1248                             get_config_name(head_config), pmu->cpus,
1249                             &config_terms);
1250         if (evsel) {
1251                 evsel->unit = info.unit;
1252                 evsel->scale = info.scale;
1253                 evsel->per_pkg = info.per_pkg;
1254                 evsel->snapshot = info.snapshot;
1255         }
1256
1257         return evsel ? 0 : -ENOMEM;
1258 }
1259
1260 int parse_events__modifier_group(struct list_head *list,
1261                                  char *event_mod)
1262 {
1263         return parse_events__modifier_event(list, event_mod, true);
1264 }
1265
1266 void parse_events__set_leader(char *name, struct list_head *list)
1267 {
1268         struct perf_evsel *leader;
1269
1270         if (list_empty(list)) {
1271                 WARN_ONCE(true, "WARNING: failed to set leader: empty list");
1272                 return;
1273         }
1274
1275         __perf_evlist__set_leader(list);
1276         leader = list_entry(list->next, struct perf_evsel, node);
1277         leader->group_name = name ? strdup(name) : NULL;
1278 }
1279
1280 /* list_event is assumed to point to malloc'ed memory */
1281 void parse_events_update_lists(struct list_head *list_event,
1282                                struct list_head *list_all)
1283 {
1284         /*
1285          * Called for single event definition. Update the
1286          * 'all event' list, and reinit the 'single event'
1287          * list, for next event definition.
1288          */
1289         list_splice_tail(list_event, list_all);
1290         free(list_event);
1291 }
1292
1293 struct event_modifier {
1294         int eu;
1295         int ek;
1296         int eh;
1297         int eH;
1298         int eG;
1299         int eI;
1300         int precise;
1301         int precise_max;
1302         int exclude_GH;
1303         int sample_read;
1304         int pinned;
1305 };
1306
1307 static int get_event_modifier(struct event_modifier *mod, char *str,
1308                                struct perf_evsel *evsel)
1309 {
1310         int eu = evsel ? evsel->attr.exclude_user : 0;
1311         int ek = evsel ? evsel->attr.exclude_kernel : 0;
1312         int eh = evsel ? evsel->attr.exclude_hv : 0;
1313         int eH = evsel ? evsel->attr.exclude_host : 0;
1314         int eG = evsel ? evsel->attr.exclude_guest : 0;
1315         int eI = evsel ? evsel->attr.exclude_idle : 0;
1316         int precise = evsel ? evsel->attr.precise_ip : 0;
1317         int precise_max = 0;
1318         int sample_read = 0;
1319         int pinned = evsel ? evsel->attr.pinned : 0;
1320
1321         int exclude = eu | ek | eh;
1322         int exclude_GH = evsel ? evsel->exclude_GH : 0;
1323
1324         memset(mod, 0, sizeof(*mod));
1325
1326         while (*str) {
1327                 if (*str == 'u') {
1328                         if (!exclude)
1329                                 exclude = eu = ek = eh = 1;
1330                         eu = 0;
1331                 } else if (*str == 'k') {
1332                         if (!exclude)
1333                                 exclude = eu = ek = eh = 1;
1334                         ek = 0;
1335                 } else if (*str == 'h') {
1336                         if (!exclude)
1337                                 exclude = eu = ek = eh = 1;
1338                         eh = 0;
1339                 } else if (*str == 'G') {
1340                         if (!exclude_GH)
1341                                 exclude_GH = eG = eH = 1;
1342                         eG = 0;
1343                 } else if (*str == 'H') {
1344                         if (!exclude_GH)
1345                                 exclude_GH = eG = eH = 1;
1346                         eH = 0;
1347                 } else if (*str == 'I') {
1348                         eI = 1;
1349                 } else if (*str == 'p') {
1350                         precise++;
1351                         /* use of precise requires exclude_guest */
1352                         if (!exclude_GH)
1353                                 eG = 1;
1354                 } else if (*str == 'P') {
1355                         precise_max = 1;
1356                 } else if (*str == 'S') {
1357                         sample_read = 1;
1358                 } else if (*str == 'D') {
1359                         pinned = 1;
1360                 } else
1361                         break;
1362
1363                 ++str;
1364         }
1365
1366         /*
1367          * precise ip:
1368          *
1369          *  0 - SAMPLE_IP can have arbitrary skid
1370          *  1 - SAMPLE_IP must have constant skid
1371          *  2 - SAMPLE_IP requested to have 0 skid
1372          *  3 - SAMPLE_IP must have 0 skid
1373          *
1374          *  See also PERF_RECORD_MISC_EXACT_IP
1375          */
1376         if (precise > 3)
1377                 return -EINVAL;
1378
1379         mod->eu = eu;
1380         mod->ek = ek;
1381         mod->eh = eh;
1382         mod->eH = eH;
1383         mod->eG = eG;
1384         mod->eI = eI;
1385         mod->precise = precise;
1386         mod->precise_max = precise_max;
1387         mod->exclude_GH = exclude_GH;
1388         mod->sample_read = sample_read;
1389         mod->pinned = pinned;
1390
1391         return 0;
1392 }
1393
1394 /*
1395  * Basic modifier sanity check to validate it contains only one
1396  * instance of any modifier (apart from 'p') present.
1397  */
1398 static int check_modifier(char *str)
1399 {
1400         char *p = str;
1401
1402         /* The sizeof includes 0 byte as well. */
1403         if (strlen(str) > (sizeof("ukhGHpppPSDI") - 1))
1404                 return -1;
1405
1406         while (*p) {
1407                 if (*p != 'p' && strchr(p + 1, *p))
1408                         return -1;
1409                 p++;
1410         }
1411
1412         return 0;
1413 }
1414
1415 int parse_events__modifier_event(struct list_head *list, char *str, bool add)
1416 {
1417         struct perf_evsel *evsel;
1418         struct event_modifier mod;
1419
1420         if (str == NULL)
1421                 return 0;
1422
1423         if (check_modifier(str))
1424                 return -EINVAL;
1425
1426         if (!add && get_event_modifier(&mod, str, NULL))
1427                 return -EINVAL;
1428
1429         __evlist__for_each_entry(list, evsel) {
1430                 if (add && get_event_modifier(&mod, str, evsel))
1431                         return -EINVAL;
1432
1433                 evsel->attr.exclude_user   = mod.eu;
1434                 evsel->attr.exclude_kernel = mod.ek;
1435                 evsel->attr.exclude_hv     = mod.eh;
1436                 evsel->attr.precise_ip     = mod.precise;
1437                 evsel->attr.exclude_host   = mod.eH;
1438                 evsel->attr.exclude_guest  = mod.eG;
1439                 evsel->attr.exclude_idle   = mod.eI;
1440                 evsel->exclude_GH          = mod.exclude_GH;
1441                 evsel->sample_read         = mod.sample_read;
1442                 evsel->precise_max         = mod.precise_max;
1443
1444                 if (perf_evsel__is_group_leader(evsel))
1445                         evsel->attr.pinned = mod.pinned;
1446         }
1447
1448         return 0;
1449 }
1450
1451 int parse_events_name(struct list_head *list, char *name)
1452 {
1453         struct perf_evsel *evsel;
1454
1455         __evlist__for_each_entry(list, evsel) {
1456                 if (!evsel->name)
1457                         evsel->name = strdup(name);
1458         }
1459
1460         return 0;
1461 }
1462
1463 static int
1464 comp_pmu(const void *p1, const void *p2)
1465 {
1466         struct perf_pmu_event_symbol *pmu1 = (struct perf_pmu_event_symbol *) p1;
1467         struct perf_pmu_event_symbol *pmu2 = (struct perf_pmu_event_symbol *) p2;
1468
1469         return strcasecmp(pmu1->symbol, pmu2->symbol);
1470 }
1471
1472 static void perf_pmu__parse_cleanup(void)
1473 {
1474         if (perf_pmu_events_list_num > 0) {
1475                 struct perf_pmu_event_symbol *p;
1476                 int i;
1477
1478                 for (i = 0; i < perf_pmu_events_list_num; i++) {
1479                         p = perf_pmu_events_list + i;
1480                         free(p->symbol);
1481                 }
1482                 free(perf_pmu_events_list);
1483                 perf_pmu_events_list = NULL;
1484                 perf_pmu_events_list_num = 0;
1485         }
1486 }
1487
1488 #define SET_SYMBOL(str, stype)          \
1489 do {                                    \
1490         p->symbol = str;                \
1491         if (!p->symbol)                 \
1492                 goto err;               \
1493         p->type = stype;                \
1494 } while (0)
1495
1496 /*
1497  * Read the pmu events list from sysfs
1498  * Save it into perf_pmu_events_list
1499  */
1500 static void perf_pmu__parse_init(void)
1501 {
1502
1503         struct perf_pmu *pmu = NULL;
1504         struct perf_pmu_alias *alias;
1505         int len = 0;
1506
1507         pmu = perf_pmu__find("cpu");
1508         if ((pmu == NULL) || list_empty(&pmu->aliases)) {
1509                 perf_pmu_events_list_num = -1;
1510                 return;
1511         }
1512         list_for_each_entry(alias, &pmu->aliases, list) {
1513                 if (strchr(alias->name, '-'))
1514                         len++;
1515                 len++;
1516         }
1517         perf_pmu_events_list = malloc(sizeof(struct perf_pmu_event_symbol) * len);
1518         if (!perf_pmu_events_list)
1519                 return;
1520         perf_pmu_events_list_num = len;
1521
1522         len = 0;
1523         list_for_each_entry(alias, &pmu->aliases, list) {
1524                 struct perf_pmu_event_symbol *p = perf_pmu_events_list + len;
1525                 char *tmp = strchr(alias->name, '-');
1526
1527                 if (tmp != NULL) {
1528                         SET_SYMBOL(strndup(alias->name, tmp - alias->name),
1529                                         PMU_EVENT_SYMBOL_PREFIX);
1530                         p++;
1531                         SET_SYMBOL(strdup(++tmp), PMU_EVENT_SYMBOL_SUFFIX);
1532                         len += 2;
1533                 } else {
1534                         SET_SYMBOL(strdup(alias->name), PMU_EVENT_SYMBOL);
1535                         len++;
1536                 }
1537         }
1538         qsort(perf_pmu_events_list, len,
1539                 sizeof(struct perf_pmu_event_symbol), comp_pmu);
1540
1541         return;
1542 err:
1543         perf_pmu__parse_cleanup();
1544 }
1545
1546 enum perf_pmu_event_symbol_type
1547 perf_pmu__parse_check(const char *name)
1548 {
1549         struct perf_pmu_event_symbol p, *r;
1550
1551         /* scan kernel pmu events from sysfs if needed */
1552         if (perf_pmu_events_list_num == 0)
1553                 perf_pmu__parse_init();
1554         /*
1555          * name "cpu" could be prefix of cpu-cycles or cpu// events.
1556          * cpu-cycles has been handled by hardcode.
1557          * So it must be cpu// events, not kernel pmu event.
1558          */
1559         if ((perf_pmu_events_list_num <= 0) || !strcmp(name, "cpu"))
1560                 return PMU_EVENT_SYMBOL_ERR;
1561
1562         p.symbol = strdup(name);
1563         r = bsearch(&p, perf_pmu_events_list,
1564                         (size_t) perf_pmu_events_list_num,
1565                         sizeof(struct perf_pmu_event_symbol), comp_pmu);
1566         free(p.symbol);
1567         return r ? r->type : PMU_EVENT_SYMBOL_ERR;
1568 }
1569
1570 static int parse_events__scanner(const char *str, void *data, int start_token)
1571 {
1572         YY_BUFFER_STATE buffer;
1573         void *scanner;
1574         int ret;
1575
1576         ret = parse_events_lex_init_extra(start_token, &scanner);
1577         if (ret)
1578                 return ret;
1579
1580         buffer = parse_events__scan_string(str, scanner);
1581
1582 #ifdef PARSER_DEBUG
1583         parse_events_debug = 1;
1584 #endif
1585         ret = parse_events_parse(data, scanner);
1586
1587         parse_events__flush_buffer(buffer, scanner);
1588         parse_events__delete_buffer(buffer, scanner);
1589         parse_events_lex_destroy(scanner);
1590         return ret;
1591 }
1592
1593 /*
1594  * parse event config string, return a list of event terms.
1595  */
1596 int parse_events_terms(struct list_head *terms, const char *str)
1597 {
1598         struct parse_events_terms data = {
1599                 .terms = NULL,
1600         };
1601         int ret;
1602
1603         ret = parse_events__scanner(str, &data, PE_START_TERMS);
1604         if (!ret) {
1605                 list_splice(data.terms, terms);
1606                 zfree(&data.terms);
1607                 return 0;
1608         }
1609
1610         parse_events_terms__delete(data.terms);
1611         return ret;
1612 }
1613
1614 int parse_events(struct perf_evlist *evlist, const char *str,
1615                  struct parse_events_error *err)
1616 {
1617         struct parse_events_evlist data = {
1618                 .list   = LIST_HEAD_INIT(data.list),
1619                 .idx    = evlist->nr_entries,
1620                 .error  = err,
1621                 .evlist = evlist,
1622         };
1623         int ret;
1624
1625         ret = parse_events__scanner(str, &data, PE_START_EVENTS);
1626         perf_pmu__parse_cleanup();
1627         if (!ret) {
1628                 struct perf_evsel *last;
1629
1630                 if (list_empty(&data.list)) {
1631                         WARN_ONCE(true, "WARNING: event parser found nothing");
1632                         return -1;
1633                 }
1634
1635                 perf_evlist__splice_list_tail(evlist, &data.list);
1636                 evlist->nr_groups += data.nr_groups;
1637                 last = perf_evlist__last(evlist);
1638                 last->cmdline_group_boundary = true;
1639
1640                 return 0;
1641         }
1642
1643         /*
1644          * There are 2 users - builtin-record and builtin-test objects.
1645          * Both call perf_evlist__delete in case of error, so we dont
1646          * need to bother.
1647          */
1648         return ret;
1649 }
1650
1651 #define MAX_WIDTH 1000
1652 static int get_term_width(void)
1653 {
1654         struct winsize ws;
1655
1656         get_term_dimensions(&ws);
1657         return ws.ws_col > MAX_WIDTH ? MAX_WIDTH : ws.ws_col;
1658 }
1659
1660 static void parse_events_print_error(struct parse_events_error *err,
1661                                      const char *event)
1662 {
1663         const char *str = "invalid or unsupported event: ";
1664         char _buf[MAX_WIDTH];
1665         char *buf = (char *) event;
1666         int idx = 0;
1667
1668         if (err->str) {
1669                 /* -2 for extra '' in the final fprintf */
1670                 int width       = get_term_width() - 2;
1671                 int len_event   = strlen(event);
1672                 int len_str, max_len, cut = 0;
1673
1674                 /*
1675                  * Maximum error index indent, we will cut
1676                  * the event string if it's bigger.
1677                  */
1678                 int max_err_idx = 13;
1679
1680                 /*
1681                  * Let's be specific with the message when
1682                  * we have the precise error.
1683                  */
1684                 str     = "event syntax error: ";
1685                 len_str = strlen(str);
1686                 max_len = width - len_str;
1687
1688                 buf = _buf;
1689
1690                 /* We're cutting from the beginning. */
1691                 if (err->idx > max_err_idx)
1692                         cut = err->idx - max_err_idx;
1693
1694                 strncpy(buf, event + cut, max_len);
1695
1696                 /* Mark cut parts with '..' on both sides. */
1697                 if (cut)
1698                         buf[0] = buf[1] = '.';
1699
1700                 if ((len_event - cut) > max_len) {
1701                         buf[max_len - 1] = buf[max_len - 2] = '.';
1702                         buf[max_len] = 0;
1703                 }
1704
1705                 idx = len_str + err->idx - cut;
1706         }
1707
1708         fprintf(stderr, "%s'%s'\n", str, buf);
1709         if (idx) {
1710                 fprintf(stderr, "%*s\\___ %s\n", idx + 1, "", err->str);
1711                 if (err->help)
1712                         fprintf(stderr, "\n%s\n", err->help);
1713                 free(err->str);
1714                 free(err->help);
1715         }
1716
1717         fprintf(stderr, "Run 'perf list' for a list of valid events\n");
1718 }
1719
1720 #undef MAX_WIDTH
1721
1722 int parse_events_option(const struct option *opt, const char *str,
1723                         int unset __maybe_unused)
1724 {
1725         struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
1726         struct parse_events_error err = { .idx = 0, };
1727         int ret = parse_events(evlist, str, &err);
1728
1729         if (ret)
1730                 parse_events_print_error(&err, str);
1731
1732         return ret;
1733 }
1734
1735 static int
1736 foreach_evsel_in_last_glob(struct perf_evlist *evlist,
1737                            int (*func)(struct perf_evsel *evsel,
1738                                        const void *arg),
1739                            const void *arg)
1740 {
1741         struct perf_evsel *last = NULL;
1742         int err;
1743
1744         /*
1745          * Don't return when list_empty, give func a chance to report
1746          * error when it found last == NULL.
1747          *
1748          * So no need to WARN here, let *func do this.
1749          */
1750         if (evlist->nr_entries > 0)
1751                 last = perf_evlist__last(evlist);
1752
1753         do {
1754                 err = (*func)(last, arg);
1755                 if (err)
1756                         return -1;
1757                 if (!last)
1758                         return 0;
1759
1760                 if (last->node.prev == &evlist->entries)
1761                         return 0;
1762                 last = list_entry(last->node.prev, struct perf_evsel, node);
1763         } while (!last->cmdline_group_boundary);
1764
1765         return 0;
1766 }
1767
1768 static int set_filter(struct perf_evsel *evsel, const void *arg)
1769 {
1770         const char *str = arg;
1771         bool found = false;
1772         int nr_addr_filters = 0;
1773         struct perf_pmu *pmu = NULL;
1774
1775         if (evsel == NULL)
1776                 goto err;
1777
1778         if (evsel->attr.type == PERF_TYPE_TRACEPOINT) {
1779                 if (perf_evsel__append_tp_filter(evsel, str) < 0) {
1780                         fprintf(stderr,
1781                                 "not enough memory to hold filter string\n");
1782                         return -1;
1783                 }
1784
1785                 return 0;
1786         }
1787
1788         while ((pmu = perf_pmu__scan(pmu)) != NULL)
1789                 if (pmu->type == evsel->attr.type) {
1790                         found = true;
1791                         break;
1792                 }
1793
1794         if (found)
1795                 perf_pmu__scan_file(pmu, "nr_addr_filters",
1796                                     "%d", &nr_addr_filters);
1797
1798         if (!nr_addr_filters)
1799                 goto err;
1800
1801         if (perf_evsel__append_addr_filter(evsel, str) < 0) {
1802                 fprintf(stderr,
1803                         "not enough memory to hold filter string\n");
1804                 return -1;
1805         }
1806
1807         return 0;
1808
1809 err:
1810         fprintf(stderr,
1811                 "--filter option should follow a -e tracepoint or HW tracer option\n");
1812
1813         return -1;
1814 }
1815
1816 int parse_filter(const struct option *opt, const char *str,
1817                  int unset __maybe_unused)
1818 {
1819         struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
1820
1821         return foreach_evsel_in_last_glob(evlist, set_filter,
1822                                           (const void *)str);
1823 }
1824
1825 static int add_exclude_perf_filter(struct perf_evsel *evsel,
1826                                    const void *arg __maybe_unused)
1827 {
1828         char new_filter[64];
1829
1830         if (evsel == NULL || evsel->attr.type != PERF_TYPE_TRACEPOINT) {
1831                 fprintf(stderr,
1832                         "--exclude-perf option should follow a -e tracepoint option\n");
1833                 return -1;
1834         }
1835
1836         snprintf(new_filter, sizeof(new_filter), "common_pid != %d", getpid());
1837
1838         if (perf_evsel__append_tp_filter(evsel, new_filter) < 0) {
1839                 fprintf(stderr,
1840                         "not enough memory to hold filter string\n");
1841                 return -1;
1842         }
1843
1844         return 0;
1845 }
1846
1847 int exclude_perf(const struct option *opt,
1848                  const char *arg __maybe_unused,
1849                  int unset __maybe_unused)
1850 {
1851         struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
1852
1853         return foreach_evsel_in_last_glob(evlist, add_exclude_perf_filter,
1854                                           NULL);
1855 }
1856
1857 static const char * const event_type_descriptors[] = {
1858         "Hardware event",
1859         "Software event",
1860         "Tracepoint event",
1861         "Hardware cache event",
1862         "Raw hardware event descriptor",
1863         "Hardware breakpoint",
1864 };
1865
1866 static int cmp_string(const void *a, const void *b)
1867 {
1868         const char * const *as = a;
1869         const char * const *bs = b;
1870
1871         return strcmp(*as, *bs);
1872 }
1873
1874 /*
1875  * Print the events from <debugfs_mount_point>/tracing/events
1876  */
1877
1878 void print_tracepoint_events(const char *subsys_glob, const char *event_glob,
1879                              bool name_only)
1880 {
1881         DIR *sys_dir, *evt_dir;
1882         struct dirent *sys_dirent, *evt_dirent;
1883         char evt_path[MAXPATHLEN];
1884         char dir_path[MAXPATHLEN];
1885         char **evt_list = NULL;
1886         unsigned int evt_i = 0, evt_num = 0;
1887         bool evt_num_known = false;
1888
1889 restart:
1890         sys_dir = opendir(tracing_events_path);
1891         if (!sys_dir)
1892                 return;
1893
1894         if (evt_num_known) {
1895                 evt_list = zalloc(sizeof(char *) * evt_num);
1896                 if (!evt_list)
1897                         goto out_close_sys_dir;
1898         }
1899
1900         for_each_subsystem(sys_dir, sys_dirent) {
1901                 if (subsys_glob != NULL &&
1902                     !strglobmatch(sys_dirent->d_name, subsys_glob))
1903                         continue;
1904
1905                 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
1906                          sys_dirent->d_name);
1907                 evt_dir = opendir(dir_path);
1908                 if (!evt_dir)
1909                         continue;
1910
1911                 for_each_event(sys_dirent, evt_dir, evt_dirent) {
1912                         if (event_glob != NULL &&
1913                             !strglobmatch(evt_dirent->d_name, event_glob))
1914                                 continue;
1915
1916                         if (!evt_num_known) {
1917                                 evt_num++;
1918                                 continue;
1919                         }
1920
1921                         snprintf(evt_path, MAXPATHLEN, "%s:%s",
1922                                  sys_dirent->d_name, evt_dirent->d_name);
1923
1924                         evt_list[evt_i] = strdup(evt_path);
1925                         if (evt_list[evt_i] == NULL)
1926                                 goto out_close_evt_dir;
1927                         evt_i++;
1928                 }
1929                 closedir(evt_dir);
1930         }
1931         closedir(sys_dir);
1932
1933         if (!evt_num_known) {
1934                 evt_num_known = true;
1935                 goto restart;
1936         }
1937         qsort(evt_list, evt_num, sizeof(char *), cmp_string);
1938         evt_i = 0;
1939         while (evt_i < evt_num) {
1940                 if (name_only) {
1941                         printf("%s ", evt_list[evt_i++]);
1942                         continue;
1943                 }
1944                 printf("  %-50s [%s]\n", evt_list[evt_i++],
1945                                 event_type_descriptors[PERF_TYPE_TRACEPOINT]);
1946         }
1947         if (evt_num && pager_in_use())
1948                 printf("\n");
1949
1950 out_free:
1951         evt_num = evt_i;
1952         for (evt_i = 0; evt_i < evt_num; evt_i++)
1953                 zfree(&evt_list[evt_i]);
1954         zfree(&evt_list);
1955         return;
1956
1957 out_close_evt_dir:
1958         closedir(evt_dir);
1959 out_close_sys_dir:
1960         closedir(sys_dir);
1961
1962         printf("FATAL: not enough memory to print %s\n",
1963                         event_type_descriptors[PERF_TYPE_TRACEPOINT]);
1964         if (evt_list)
1965                 goto out_free;
1966 }
1967
1968 /*
1969  * Check whether event is in <debugfs_mount_point>/tracing/events
1970  */
1971
1972 int is_valid_tracepoint(const char *event_string)
1973 {
1974         DIR *sys_dir, *evt_dir;
1975         struct dirent *sys_dirent, *evt_dirent;
1976         char evt_path[MAXPATHLEN];
1977         char dir_path[MAXPATHLEN];
1978
1979         sys_dir = opendir(tracing_events_path);
1980         if (!sys_dir)
1981                 return 0;
1982
1983         for_each_subsystem(sys_dir, sys_dirent) {
1984
1985                 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
1986                          sys_dirent->d_name);
1987                 evt_dir = opendir(dir_path);
1988                 if (!evt_dir)
1989                         continue;
1990
1991                 for_each_event(sys_dirent, evt_dir, evt_dirent) {
1992                         snprintf(evt_path, MAXPATHLEN, "%s:%s",
1993                                  sys_dirent->d_name, evt_dirent->d_name);
1994                         if (!strcmp(evt_path, event_string)) {
1995                                 closedir(evt_dir);
1996                                 closedir(sys_dir);
1997                                 return 1;
1998                         }
1999                 }
2000                 closedir(evt_dir);
2001         }
2002         closedir(sys_dir);
2003         return 0;
2004 }
2005
2006 static bool is_event_supported(u8 type, unsigned config)
2007 {
2008         bool ret = true;
2009         int open_return;
2010         struct perf_evsel *evsel;
2011         struct perf_event_attr attr = {
2012                 .type = type,
2013                 .config = config,
2014                 .disabled = 1,
2015         };
2016         struct {
2017                 struct thread_map map;
2018                 int threads[1];
2019         } tmap = {
2020                 .map.nr  = 1,
2021                 .threads = { 0 },
2022         };
2023
2024         evsel = perf_evsel__new(&attr);
2025         if (evsel) {
2026                 open_return = perf_evsel__open(evsel, NULL, &tmap.map);
2027                 ret = open_return >= 0;
2028
2029                 if (open_return == -EACCES) {
2030                         /*
2031                          * This happens if the paranoid value
2032                          * /proc/sys/kernel/perf_event_paranoid is set to 2
2033                          * Re-run with exclude_kernel set; we don't do that
2034                          * by default as some ARM machines do not support it.
2035                          *
2036                          */
2037                         evsel->attr.exclude_kernel = 1;
2038                         ret = perf_evsel__open(evsel, NULL, &tmap.map) >= 0;
2039                 }
2040                 perf_evsel__delete(evsel);
2041         }
2042
2043         return ret;
2044 }
2045
2046 void print_sdt_events(const char *subsys_glob, const char *event_glob,
2047                       bool name_only)
2048 {
2049         struct probe_cache *pcache;
2050         struct probe_cache_entry *ent;
2051         struct strlist *bidlist, *sdtlist;
2052         struct strlist_config cfg = {.dont_dupstr = true};
2053         struct str_node *nd, *nd2;
2054         char *buf, *path, *ptr = NULL;
2055         bool show_detail = false;
2056         int ret;
2057
2058         sdtlist = strlist__new(NULL, &cfg);
2059         if (!sdtlist) {
2060                 pr_debug("Failed to allocate new strlist for SDT\n");
2061                 return;
2062         }
2063         bidlist = build_id_cache__list_all(true);
2064         if (!bidlist) {
2065                 pr_debug("Failed to get buildids: %d\n", errno);
2066                 return;
2067         }
2068         strlist__for_each_entry(nd, bidlist) {
2069                 pcache = probe_cache__new(nd->s);
2070                 if (!pcache)
2071                         continue;
2072                 list_for_each_entry(ent, &pcache->entries, node) {
2073                         if (!ent->sdt)
2074                                 continue;
2075                         if (subsys_glob &&
2076                             !strglobmatch(ent->pev.group, subsys_glob))
2077                                 continue;
2078                         if (event_glob &&
2079                             !strglobmatch(ent->pev.event, event_glob))
2080                                 continue;
2081                         ret = asprintf(&buf, "%s:%s@%s", ent->pev.group,
2082                                         ent->pev.event, nd->s);
2083                         if (ret > 0)
2084                                 strlist__add(sdtlist, buf);
2085                 }
2086                 probe_cache__delete(pcache);
2087         }
2088         strlist__delete(bidlist);
2089
2090         strlist__for_each_entry(nd, sdtlist) {
2091                 buf = strchr(nd->s, '@');
2092                 if (buf)
2093                         *(buf++) = '\0';
2094                 if (name_only) {
2095                         printf("%s ", nd->s);
2096                         continue;
2097                 }
2098                 nd2 = strlist__next(nd);
2099                 if (nd2) {
2100                         ptr = strchr(nd2->s, '@');
2101                         if (ptr)
2102                                 *ptr = '\0';
2103                         if (strcmp(nd->s, nd2->s) == 0)
2104                                 show_detail = true;
2105                 }
2106                 if (show_detail) {
2107                         path = build_id_cache__origname(buf);
2108                         ret = asprintf(&buf, "%s@%s(%.12s)", nd->s, path, buf);
2109                         if (ret > 0) {
2110                                 printf("  %-50s [%s]\n", buf, "SDT event");
2111                                 free(buf);
2112                         }
2113                 } else
2114                         printf("  %-50s [%s]\n", nd->s, "SDT event");
2115                 if (nd2) {
2116                         if (strcmp(nd->s, nd2->s) != 0)
2117                                 show_detail = false;
2118                         if (ptr)
2119                                 *ptr = '@';
2120                 }
2121         }
2122         strlist__delete(sdtlist);
2123 }
2124
2125 int print_hwcache_events(const char *event_glob, bool name_only)
2126 {
2127         unsigned int type, op, i, evt_i = 0, evt_num = 0;
2128         char name[64];
2129         char **evt_list = NULL;
2130         bool evt_num_known = false;
2131
2132 restart:
2133         if (evt_num_known) {
2134                 evt_list = zalloc(sizeof(char *) * evt_num);
2135                 if (!evt_list)
2136                         goto out_enomem;
2137         }
2138
2139         for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) {
2140                 for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) {
2141                         /* skip invalid cache type */
2142                         if (!perf_evsel__is_cache_op_valid(type, op))
2143                                 continue;
2144
2145                         for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) {
2146                                 __perf_evsel__hw_cache_type_op_res_name(type, op, i,
2147                                                                         name, sizeof(name));
2148                                 if (event_glob != NULL && !strglobmatch(name, event_glob))
2149                                         continue;
2150
2151                                 if (!is_event_supported(PERF_TYPE_HW_CACHE,
2152                                                         type | (op << 8) | (i << 16)))
2153                                         continue;
2154
2155                                 if (!evt_num_known) {
2156                                         evt_num++;
2157                                         continue;
2158                                 }
2159
2160                                 evt_list[evt_i] = strdup(name);
2161                                 if (evt_list[evt_i] == NULL)
2162                                         goto out_enomem;
2163                                 evt_i++;
2164                         }
2165                 }
2166         }
2167
2168         if (!evt_num_known) {
2169                 evt_num_known = true;
2170                 goto restart;
2171         }
2172         qsort(evt_list, evt_num, sizeof(char *), cmp_string);
2173         evt_i = 0;
2174         while (evt_i < evt_num) {
2175                 if (name_only) {
2176                         printf("%s ", evt_list[evt_i++]);
2177                         continue;
2178                 }
2179                 printf("  %-50s [%s]\n", evt_list[evt_i++],
2180                                 event_type_descriptors[PERF_TYPE_HW_CACHE]);
2181         }
2182         if (evt_num && pager_in_use())
2183                 printf("\n");
2184
2185 out_free:
2186         evt_num = evt_i;
2187         for (evt_i = 0; evt_i < evt_num; evt_i++)
2188                 zfree(&evt_list[evt_i]);
2189         zfree(&evt_list);
2190         return evt_num;
2191
2192 out_enomem:
2193         printf("FATAL: not enough memory to print %s\n", event_type_descriptors[PERF_TYPE_HW_CACHE]);
2194         if (evt_list)
2195                 goto out_free;
2196         return evt_num;
2197 }
2198
2199 void print_symbol_events(const char *event_glob, unsigned type,
2200                                 struct event_symbol *syms, unsigned max,
2201                                 bool name_only)
2202 {
2203         unsigned int i, evt_i = 0, evt_num = 0;
2204         char name[MAX_NAME_LEN];
2205         char **evt_list = NULL;
2206         bool evt_num_known = false;
2207
2208 restart:
2209         if (evt_num_known) {
2210                 evt_list = zalloc(sizeof(char *) * evt_num);
2211                 if (!evt_list)
2212                         goto out_enomem;
2213                 syms -= max;
2214         }
2215
2216         for (i = 0; i < max; i++, syms++) {
2217
2218                 if (event_glob != NULL && syms->symbol != NULL &&
2219                     !(strglobmatch(syms->symbol, event_glob) ||
2220                       (syms->alias && strglobmatch(syms->alias, event_glob))))
2221                         continue;
2222
2223                 if (!is_event_supported(type, i))
2224                         continue;
2225
2226                 if (!evt_num_known) {
2227                         evt_num++;
2228                         continue;
2229                 }
2230
2231                 if (!name_only && strlen(syms->alias))
2232                         snprintf(name, MAX_NAME_LEN, "%s OR %s", syms->symbol, syms->alias);
2233                 else
2234                         strncpy(name, syms->symbol, MAX_NAME_LEN);
2235
2236                 evt_list[evt_i] = strdup(name);
2237                 if (evt_list[evt_i] == NULL)
2238                         goto out_enomem;
2239                 evt_i++;
2240         }
2241
2242         if (!evt_num_known) {
2243                 evt_num_known = true;
2244                 goto restart;
2245         }
2246         qsort(evt_list, evt_num, sizeof(char *), cmp_string);
2247         evt_i = 0;
2248         while (evt_i < evt_num) {
2249                 if (name_only) {
2250                         printf("%s ", evt_list[evt_i++]);
2251                         continue;
2252                 }
2253                 printf("  %-50s [%s]\n", evt_list[evt_i++], event_type_descriptors[type]);
2254         }
2255         if (evt_num && pager_in_use())
2256                 printf("\n");
2257
2258 out_free:
2259         evt_num = evt_i;
2260         for (evt_i = 0; evt_i < evt_num; evt_i++)
2261                 zfree(&evt_list[evt_i]);
2262         zfree(&evt_list);
2263         return;
2264
2265 out_enomem:
2266         printf("FATAL: not enough memory to print %s\n", event_type_descriptors[type]);
2267         if (evt_list)
2268                 goto out_free;
2269 }
2270
2271 /*
2272  * Print the help text for the event symbols:
2273  */
2274 void print_events(const char *event_glob, bool name_only, bool quiet_flag,
2275                         bool long_desc)
2276 {
2277         print_symbol_events(event_glob, PERF_TYPE_HARDWARE,
2278                             event_symbols_hw, PERF_COUNT_HW_MAX, name_only);
2279
2280         print_symbol_events(event_glob, PERF_TYPE_SOFTWARE,
2281                             event_symbols_sw, PERF_COUNT_SW_MAX, name_only);
2282
2283         print_hwcache_events(event_glob, name_only);
2284
2285         print_pmu_events(event_glob, name_only, quiet_flag, long_desc);
2286
2287         if (event_glob != NULL)
2288                 return;
2289
2290         if (!name_only) {
2291                 printf("  %-50s [%s]\n",
2292                        "rNNN",
2293                        event_type_descriptors[PERF_TYPE_RAW]);
2294                 printf("  %-50s [%s]\n",
2295                        "cpu/t1=v1[,t2=v2,t3 ...]/modifier",
2296                        event_type_descriptors[PERF_TYPE_RAW]);
2297                 if (pager_in_use())
2298                         printf("   (see 'man perf-list' on how to encode it)\n\n");
2299
2300                 printf("  %-50s [%s]\n",
2301                        "mem:<addr>[/len][:access]",
2302                         event_type_descriptors[PERF_TYPE_BREAKPOINT]);
2303                 if (pager_in_use())
2304                         printf("\n");
2305         }
2306
2307         print_tracepoint_events(NULL, NULL, name_only);
2308
2309         print_sdt_events(NULL, NULL, name_only);
2310 }
2311
2312 int parse_events__is_hardcoded_term(struct parse_events_term *term)
2313 {
2314         return term->type_term != PARSE_EVENTS__TERM_TYPE_USER;
2315 }
2316
2317 static int new_term(struct parse_events_term **_term, int type_val,
2318                     int type_term, char *config,
2319                     char *str, u64 num, int err_term, int err_val)
2320 {
2321         struct parse_events_term *term;
2322
2323         term = zalloc(sizeof(*term));
2324         if (!term)
2325                 return -ENOMEM;
2326
2327         INIT_LIST_HEAD(&term->list);
2328         term->type_val  = type_val;
2329         term->type_term = type_term;
2330         term->config = config;
2331         term->err_term = err_term;
2332         term->err_val  = err_val;
2333
2334         switch (type_val) {
2335         case PARSE_EVENTS__TERM_TYPE_NUM:
2336                 term->val.num = num;
2337                 break;
2338         case PARSE_EVENTS__TERM_TYPE_STR:
2339                 term->val.str = str;
2340                 break;
2341         default:
2342                 free(term);
2343                 return -EINVAL;
2344         }
2345
2346         *_term = term;
2347         return 0;
2348 }
2349
2350 int parse_events_term__num(struct parse_events_term **term,
2351                            int type_term, char *config, u64 num,
2352                            void *loc_term_, void *loc_val_)
2353 {
2354         YYLTYPE *loc_term = loc_term_;
2355         YYLTYPE *loc_val = loc_val_;
2356
2357         return new_term(term, PARSE_EVENTS__TERM_TYPE_NUM, type_term,
2358                         config, NULL, num,
2359                         loc_term ? loc_term->first_column : 0,
2360                         loc_val ? loc_val->first_column : 0);
2361 }
2362
2363 int parse_events_term__str(struct parse_events_term **term,
2364                            int type_term, char *config, char *str,
2365                            void *loc_term_, void *loc_val_)
2366 {
2367         YYLTYPE *loc_term = loc_term_;
2368         YYLTYPE *loc_val = loc_val_;
2369
2370         return new_term(term, PARSE_EVENTS__TERM_TYPE_STR, type_term,
2371                         config, str, 0,
2372                         loc_term ? loc_term->first_column : 0,
2373                         loc_val ? loc_val->first_column : 0);
2374 }
2375
2376 int parse_events_term__sym_hw(struct parse_events_term **term,
2377                               char *config, unsigned idx)
2378 {
2379         struct event_symbol *sym;
2380
2381         BUG_ON(idx >= PERF_COUNT_HW_MAX);
2382         sym = &event_symbols_hw[idx];
2383
2384         if (config)
2385                 return new_term(term, PARSE_EVENTS__TERM_TYPE_STR,
2386                                 PARSE_EVENTS__TERM_TYPE_USER, config,
2387                                 (char *) sym->symbol, 0, 0, 0);
2388         else
2389                 return new_term(term, PARSE_EVENTS__TERM_TYPE_STR,
2390                                 PARSE_EVENTS__TERM_TYPE_USER,
2391                                 (char *) "event", (char *) sym->symbol,
2392                                 0, 0, 0);
2393 }
2394
2395 int parse_events_term__clone(struct parse_events_term **new,
2396                              struct parse_events_term *term)
2397 {
2398         return new_term(new, term->type_val, term->type_term, term->config,
2399                         term->val.str, term->val.num,
2400                         term->err_term, term->err_val);
2401 }
2402
2403 void parse_events_terms__purge(struct list_head *terms)
2404 {
2405         struct parse_events_term *term, *h;
2406
2407         list_for_each_entry_safe(term, h, terms, list) {
2408                 if (term->array.nr_ranges)
2409                         free(term->array.ranges);
2410                 list_del_init(&term->list);
2411                 free(term);
2412         }
2413 }
2414
2415 void parse_events_terms__delete(struct list_head *terms)
2416 {
2417         if (!terms)
2418                 return;
2419         parse_events_terms__purge(terms);
2420         free(terms);
2421 }
2422
2423 void parse_events__clear_array(struct parse_events_array *a)
2424 {
2425         free(a->ranges);
2426 }
2427
2428 void parse_events_evlist_error(struct parse_events_evlist *data,
2429                                int idx, const char *str)
2430 {
2431         struct parse_events_error *err = data->error;
2432
2433         if (!err)
2434                 return;
2435         err->idx = idx;
2436         err->str = strdup(str);
2437         WARN_ONCE(!err->str, "WARNING: failed to allocate error string");
2438 }
2439
2440 static void config_terms_list(char *buf, size_t buf_sz)
2441 {
2442         int i;
2443         bool first = true;
2444
2445         buf[0] = '\0';
2446         for (i = 0; i < __PARSE_EVENTS__TERM_TYPE_NR; i++) {
2447                 const char *name = config_term_names[i];
2448
2449                 if (!config_term_avail(i, NULL))
2450                         continue;
2451                 if (!name)
2452                         continue;
2453                 if (name[0] == '<')
2454                         continue;
2455
2456                 if (strlen(buf) + strlen(name) + 2 >= buf_sz)
2457                         return;
2458
2459                 if (!first)
2460                         strcat(buf, ",");
2461                 else
2462                         first = false;
2463                 strcat(buf, name);
2464         }
2465 }
2466
2467 /*
2468  * Return string contains valid config terms of an event.
2469  * @additional_terms: For terms such as PMU sysfs terms.
2470  */
2471 char *parse_events_formats_error_string(char *additional_terms)
2472 {
2473         char *str;
2474         /* "no-overwrite" is the longest name */
2475         char static_terms[__PARSE_EVENTS__TERM_TYPE_NR *
2476                           (sizeof("no-overwrite") - 1)];
2477
2478         config_terms_list(static_terms, sizeof(static_terms));
2479         /* valid terms */
2480         if (additional_terms) {
2481                 if (asprintf(&str, "valid terms: %s,%s",
2482                              additional_terms, static_terms) < 0)
2483                         goto fail;
2484         } else {
2485                 if (asprintf(&str, "valid terms: %s", static_terms) < 0)
2486                         goto fail;
2487         }
2488         return str;
2489
2490 fail:
2491         return NULL;
2492 }