tools/perf/util/parse-events.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include <linux/hw_breakpoint.h>
   3 #include <linux/err.h>
   4 #include <linux/zalloc.h>
   5 #include <dirent.h>
   6 #include <errno.h>
   7 #include <sys/ioctl.h>
   8 #include <sys/types.h>
   9 #include <sys/stat.h>
  10 #include <fcntl.h>
  11 #include <sys/param.h>
  12 #include "term.h"
  13 #include "build-id.h"
  14 #include "evlist.h"
  15 #include "evsel.h"
  16 #include <subcmd/pager.h>
  17 #include <subcmd/parse-options.h>
  18 #include "parse-events.h"
  19 #include <subcmd/exec-cmd.h>
  20 #include "string2.h"
  21 #include "strlist.h"
  22 #include "symbol.h"
  23 #include "header.h"
  24 #include "bpf-loader.h"
  25 #include "debug.h"
  26 #include <api/fs/tracing_path.h>
  27 #include <perf/cpumap.h>
  28 #include "parse-events-bison.h"
  29 #define YY_EXTRA_TYPE void*
  30 #include "parse-events-flex.h"
  31 #include "pmu.h"
  32 #include "thread_map.h"
  33 #include "probe-file.h"
  34 #include "asm/bug.h"
  35 #include "util/parse-branch-options.h"
  36 #include "metricgroup.h"
  37 #include "util/evsel_config.h"
  38 #include "util/event.h"
  39 #include "util/pfm.h"
  40 #include "util/parse-events-hybrid.h"
  41 #include "perf.h"
  42
  43 #define MAX_NAME_LEN 100
  44
  45 #ifdef PARSER_DEBUG
  46 extern int parse_events_debug;
  47 #endif
  48 int parse_events_parse(void *parse_state, void *scanner);
  49 static int get_config_terms(struct list_head *head_config,
  50                             struct list_head *head_terms __maybe_unused);
  51
  52 static struct perf_pmu_event_symbol *perf_pmu_events_list;
  53 /*
  54  * The variable indicates the number of supported pmu event symbols.
  55  * 0 means not initialized and ready to init
  56  * -1 means failed to init, don't try anymore
  57  * >0 is the number of supported pmu event symbols
  58  */
  59 static int perf_pmu_events_list_num;
  60
  61 struct event_symbol event_symbols_hw[PERF_COUNT_HW_MAX] = {
  62         [PERF_COUNT_HW_CPU_CYCLES] = {
  63                 .symbol = "cpu-cycles",
  64                 .alias  = "cycles",
  65         },
  66         [PERF_COUNT_HW_INSTRUCTIONS] = {
  67                 .symbol = "instructions",
  68                 .alias  = "",
  69         },
  70         [PERF_COUNT_HW_CACHE_REFERENCES] = {
  71                 .symbol = "cache-references",
  72                 .alias  = "",
  73         },
  74         [PERF_COUNT_HW_CACHE_MISSES] = {
  75                 .symbol = "cache-misses",
  76                 .alias  = "",
  77         },
  78         [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = {
  79                 .symbol = "branch-instructions",
  80                 .alias  = "branches",
  81         },
  82         [PERF_COUNT_HW_BRANCH_MISSES] = {
  83                 .symbol = "branch-misses",
  84                 .alias  = "",
  85         },
  86         [PERF_COUNT_HW_BUS_CYCLES] = {
  87                 .symbol = "bus-cycles",
  88                 .alias  = "",
  89         },
  90         [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = {
  91                 .symbol = "stalled-cycles-frontend",
  92                 .alias  = "idle-cycles-frontend",
  93         },
  94         [PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = {
  95                 .symbol = "stalled-cycles-backend",
  96                 .alias  = "idle-cycles-backend",
  97         },
  98         [PERF_COUNT_HW_REF_CPU_CYCLES] = {
  99                 .symbol = "ref-cycles",
 100                 .alias  = "",
 101         },
 102 };
 103
 104 struct event_symbol event_symbols_sw[PERF_COUNT_SW_MAX] = {
 105         [PERF_COUNT_SW_CPU_CLOCK] = {
 106                 .symbol = "cpu-clock",
 107                 .alias  = "",
 108         },
 109         [PERF_COUNT_SW_TASK_CLOCK] = {
 110                 .symbol = "task-clock",
 111                 .alias  = "",
 112         },
 113         [PERF_COUNT_SW_PAGE_FAULTS] = {
 114                 .symbol = "page-faults",
 115                 .alias  = "faults",
 116         },
 117         [PERF_COUNT_SW_CONTEXT_SWITCHES] = {
 118                 .symbol = "context-switches",
 119                 .alias  = "cs",
 120         },
 121         [PERF_COUNT_SW_CPU_MIGRATIONS] = {
 122                 .symbol = "cpu-migrations",
 123                 .alias  = "migrations",
 124         },
 125         [PERF_COUNT_SW_PAGE_FAULTS_MIN] = {
 126                 .symbol = "minor-faults",
 127                 .alias  = "",
 128         },
 129         [PERF_COUNT_SW_PAGE_FAULTS_MAJ] = {
 130                 .symbol = "major-faults",
 131                 .alias  = "",
 132         },
 133         [PERF_COUNT_SW_ALIGNMENT_FAULTS] = {
 134                 .symbol = "alignment-faults",
 135                 .alias  = "",
 136         },
 137         [PERF_COUNT_SW_EMULATION_FAULTS] = {
 138                 .symbol = "emulation-faults",
 139                 .alias  = "",
 140         },
 141         [PERF_COUNT_SW_DUMMY] = {
 142                 .symbol = "dummy",
 143                 .alias  = "",
 144         },
 145         [PERF_COUNT_SW_BPF_OUTPUT] = {
 146                 .symbol = "bpf-output",
 147                 .alias  = "",
 148         },
 149 };
 150
 151 #define __PERF_EVENT_FIELD(config, name) \
 152         ((config & PERF_EVENT_##name##_MASK) >> PERF_EVENT_##name##_SHIFT)
 153
 154 #define PERF_EVENT_RAW(config)          __PERF_EVENT_FIELD(config, RAW)
 155 #define PERF_EVENT_CONFIG(config)       __PERF_EVENT_FIELD(config, CONFIG)
 156 #define PERF_EVENT_TYPE(config)         __PERF_EVENT_FIELD(config, TYPE)
 157 #define PERF_EVENT_ID(config)           __PERF_EVENT_FIELD(config, EVENT)
 158
 159 #define for_each_subsystem(sys_dir, sys_dirent)                 \
 160         while ((sys_dirent = readdir(sys_dir)) != NULL)         \
 161                 if (sys_dirent->d_type == DT_DIR &&             \
 162                     (strcmp(sys_dirent->d_name, ".")) &&        \
 163                     (strcmp(sys_dirent->d_name, "..")))
 164
 165 static int tp_event_has_id(const char *dir_path, struct dirent *evt_dir)
 166 {
 167         char evt_path[MAXPATHLEN];
 168         int fd;
 169
 170         snprintf(evt_path, MAXPATHLEN, "%s/%s/id", dir_path, evt_dir->d_name);
 171         fd = open(evt_path, O_RDONLY);
 172         if (fd < 0)
 173                 return -EINVAL;
 174         close(fd);
 175
 176         return 0;
 177 }
 178
 179 #define for_each_event(dir_path, evt_dir, evt_dirent)           \
 180         while ((evt_dirent = readdir(evt_dir)) != NULL)         \
 181                 if (evt_dirent->d_type == DT_DIR &&             \
 182                     (strcmp(evt_dirent->d_name, ".")) &&        \
 183                     (strcmp(evt_dirent->d_name, "..")) &&       \
 184                     (!tp_event_has_id(dir_path, evt_dirent)))
 185
 186 #define MAX_EVENT_LENGTH 512
 187
 188 void parse_events__handle_error(struct parse_events_error *err, int idx,
 189                                 char *str, char *help)
 190 {
 191         if (WARN(!str, "WARNING: failed to provide error string\n")) {
 192                 free(help);
 193                 return;
 194         }
 195         switch (err->num_errors) {
 196         case 0:
 197                 err->idx = idx;
 198                 err->str = str;
 199                 err->help = help;
 200                 break;
 201         case 1:
 202                 err->first_idx = err->idx;
 203                 err->idx = idx;
 204                 err->first_str = err->str;
 205                 err->str = str;
 206                 err->first_help = err->help;
 207                 err->help = help;
 208                 break;
 209         default:
 210                 pr_debug("Multiple errors dropping message: %s (%s)\n",
 211                         err->str, err->help);
 212                 free(err->str);
 213                 err->str = str;
 214                 free(err->help);
 215                 err->help = help;
 216                 break;
 217         }
 218         err->num_errors++;
 219 }
 220
 221 struct tracepoint_path *tracepoint_id_to_path(u64 config)
 222 {
 223         struct tracepoint_path *path = NULL;
 224         DIR *sys_dir, *evt_dir;
 225         struct dirent *sys_dirent, *evt_dirent;
 226         char id_buf[24];
 227         int fd;
 228         u64 id;
 229         char evt_path[MAXPATHLEN];
 230         char *dir_path;
 231
 232         sys_dir = tracing_events__opendir();
 233         if (!sys_dir)
 234                 return NULL;
 235
 236         for_each_subsystem(sys_dir, sys_dirent) {
 237                 dir_path = get_events_file(sys_dirent->d_name);
 238                 if (!dir_path)
 239                         continue;
 240                 evt_dir = opendir(dir_path);
 241                 if (!evt_dir)
 242                         goto next;
 243
 244                 for_each_event(dir_path, evt_dir, evt_dirent) {
 245
 246                         scnprintf(evt_path, MAXPATHLEN, "%s/%s/id", dir_path,
 247                                   evt_dirent->d_name);
 248                         fd = open(evt_path, O_RDONLY);
 249                         if (fd < 0)
 250                                 continue;
 251                         if (read(fd, id_buf, sizeof(id_buf)) < 0) {
 252                                 close(fd);
 253                                 continue;
 254                         }
 255                         close(fd);
 256                         id = atoll(id_buf);
 257                         if (id == config) {
 258                                 put_events_file(dir_path);
 259                                 closedir(evt_dir);
 260                                 closedir(sys_dir);
 261                                 path = zalloc(sizeof(*path));
 262                                 if (!path)
 263                                         return NULL;
 264                                 if (asprintf(&path->system, "%.*s", MAX_EVENT_LENGTH, sys_dirent->d_name) < 0) {
 265                                         free(path);
 266                                         return NULL;
 267                                 }
 268                                 if (asprintf(&path->name, "%.*s", MAX_EVENT_LENGTH, evt_dirent->d_name) < 0) {
 269                                         zfree(&path->system);
 270                                         free(path);
 271                                         return NULL;
 272                                 }
 273                                 return path;
 274                         }
 275                 }
 276                 closedir(evt_dir);
 277 next:
 278                 put_events_file(dir_path);
 279         }
 280
 281         closedir(sys_dir);
 282         return NULL;
 283 }
 284
 285 struct tracepoint_path *tracepoint_name_to_path(const char *name)
 286 {
 287         struct tracepoint_path *path = zalloc(sizeof(*path));
 288         char *str = strchr(name, ':');
 289
 290         if (path == NULL || str == NULL) {
 291                 free(path);
 292                 return NULL;
 293         }
 294
 295         path->system = strndup(name, str - name);
 296         path->name = strdup(str+1);
 297
 298         if (path->system == NULL || path->name == NULL) {
 299                 zfree(&path->system);
 300                 zfree(&path->name);
 301                 zfree(&path);
 302         }
 303
 304         return path;
 305 }
 306
 307 const char *event_type(int type)
 308 {
 309         switch (type) {
 310         case PERF_TYPE_HARDWARE:
 311                 return "hardware";
 312
 313         case PERF_TYPE_SOFTWARE:
 314                 return "software";
 315
 316         case PERF_TYPE_TRACEPOINT:
 317                 return "tracepoint";
 318
 319         case PERF_TYPE_HW_CACHE:
 320                 return "hardware-cache";
 321
 322         default:
 323                 break;
 324         }
 325
 326         return "unknown";
 327 }
 328
 329 static int parse_events__is_name_term(struct parse_events_term *term)
 330 {
 331         return term->type_term == PARSE_EVENTS__TERM_TYPE_NAME;
 332 }
 333
 334 static char *get_config_name(struct list_head *head_terms)
 335 {
 336         struct parse_events_term *term;
 337
 338         if (!head_terms)
 339                 return NULL;
 340
 341         list_for_each_entry(term, head_terms, list)
 342                 if (parse_events__is_name_term(term))
 343                         return term->val.str;
 344
 345         return NULL;
 346 }
 347
 348 static struct evsel *
 349 __add_event(struct list_head *list, int *idx,
 350             struct perf_event_attr *attr,
 351             bool init_attr,
 352             char *name, struct perf_pmu *pmu,
 353             struct list_head *config_terms, bool auto_merge_stats,
 354             const char *cpu_list)
 355 {
 356         struct evsel *evsel;
 357         struct perf_cpu_map *cpus = pmu ? perf_cpu_map__get(pmu->cpus) :
 358                                cpu_list ? perf_cpu_map__new(cpu_list) : NULL;
 359
 360         if (pmu && attr->type == PERF_TYPE_RAW)
 361                 perf_pmu__warn_invalid_config(pmu, attr->config, name);
 362
 363         if (init_attr)
 364                 event_attr_init(attr);
 365
 366         evsel = evsel__new_idx(attr, *idx);
 367         if (!evsel) {
 368                 perf_cpu_map__put(cpus);
 369                 return NULL;
 370         }
 371
 372         (*idx)++;
 373         evsel->core.cpus = cpus;
 374         evsel->core.own_cpus = perf_cpu_map__get(cpus);
 375         evsel->core.system_wide = pmu ? pmu->is_uncore : false;
 376         evsel->auto_merge_stats = auto_merge_stats;
 377
 378         if (name)
 379                 evsel->name = strdup(name);
 380
 381         if (config_terms)
 382                 list_splice(config_terms, &evsel->config_terms);
 383
 384         if (list)
 385                 list_add_tail(&evsel->core.node, list);
 386
 387         return evsel;
 388 }
 389
 390 struct evsel *parse_events__add_event(int idx, struct perf_event_attr *attr,
 391                                         char *name, struct perf_pmu *pmu)
 392 {
 393         return __add_event(NULL, &idx, attr, false, name, pmu, NULL, false,
 394                            NULL);
 395 }
 396
 397 static int add_event(struct list_head *list, int *idx,
 398                      struct perf_event_attr *attr, char *name,
 399                      struct list_head *config_terms)
 400 {
 401         return __add_event(list, idx, attr, true, name, NULL, config_terms,
 402                            false, NULL) ? 0 : -ENOMEM;
 403 }
 404
 405 static int add_event_tool(struct list_head *list, int *idx,
 406                           enum perf_tool_event tool_event)
 407 {
 408         struct evsel *evsel;
 409         struct perf_event_attr attr = {
 410                 .type = PERF_TYPE_SOFTWARE,
 411                 .config = PERF_COUNT_SW_DUMMY,
 412         };
 413
 414         evsel = __add_event(list, idx, &attr, true, NULL, NULL, NULL, false,
 415                             "0");
 416         if (!evsel)
 417                 return -ENOMEM;
 418         evsel->tool_event = tool_event;
 419         if (tool_event == PERF_TOOL_DURATION_TIME)
 420                 evsel->unit = "ns";
 421         return 0;
 422 }
 423
 424 static int parse_aliases(char *str, const char *names[][EVSEL__MAX_ALIASES], int size)
 425 {
 426         int i, j;
 427         int n, longest = -1;
 428
 429         for (i = 0; i < size; i++) {
 430                 for (j = 0; j < EVSEL__MAX_ALIASES && names[i][j]; j++) {
 431                         n = strlen(names[i][j]);
 432                         if (n > longest && !strncasecmp(str, names[i][j], n))
 433                                 longest = n;
 434                 }
 435                 if (longest > 0)
 436                         return i;
 437         }
 438
 439         return -1;
 440 }
 441
 442 typedef int config_term_func_t(struct perf_event_attr *attr,
 443                                struct parse_events_term *term,
 444                                struct parse_events_error *err);
 445 static int config_term_common(struct perf_event_attr *attr,
 446                               struct parse_events_term *term,
 447                               struct parse_events_error *err);
 448 static int config_attr(struct perf_event_attr *attr,
 449                        struct list_head *head,
 450                        struct parse_events_error *err,
 451                        config_term_func_t config_term);
 452
 453 int parse_events_add_cache(struct list_head *list, int *idx,
 454                            char *type, char *op_result1, char *op_result2,
 455                            struct parse_events_error *err,
 456                            struct list_head *head_config)
 457 {
 458         struct perf_event_attr attr;
 459         LIST_HEAD(config_terms);
 460         char name[MAX_NAME_LEN], *config_name;
 461         int cache_type = -1, cache_op = -1, cache_result = -1;
 462         char *op_result[2] = { op_result1, op_result2 };
 463         int i, n, ret;
 464         bool hybrid;
 465
 466         /*
 467          * No fallback - if we cannot get a clear cache type
 468          * then bail out:
 469          */
 470         cache_type = parse_aliases(type, evsel__hw_cache, PERF_COUNT_HW_CACHE_MAX);
 471         if (cache_type == -1)
 472                 return -EINVAL;
 473
 474         config_name = get_config_name(head_config);
 475         n = snprintf(name, MAX_NAME_LEN, "%s", type);
 476
 477         for (i = 0; (i < 2) && (op_result[i]); i++) {
 478                 char *str = op_result[i];
 479
 480                 n += snprintf(name + n, MAX_NAME_LEN - n, "-%s", str);
 481
 482                 if (cache_op == -1) {
 483                         cache_op = parse_aliases(str, evsel__hw_cache_op,
 484                                                  PERF_COUNT_HW_CACHE_OP_MAX);
 485                         if (cache_op >= 0) {
 486                                 if (!evsel__is_cache_op_valid(cache_type, cache_op))
 487                                         return -EINVAL;
 488                                 continue;
 489                         }
 490                 }
 491
 492                 if (cache_result == -1) {
 493                         cache_result = parse_aliases(str, evsel__hw_cache_result,
 494                                                      PERF_COUNT_HW_CACHE_RESULT_MAX);
 495                         if (cache_result >= 0)
 496                                 continue;
 497                 }
 498         }
 499
 500         /*
 501          * Fall back to reads:
 502          */
 503         if (cache_op == -1)
 504                 cache_op = PERF_COUNT_HW_CACHE_OP_READ;
 505
 506         /*
 507          * Fall back to accesses:
 508          */
 509         if (cache_result == -1)
 510                 cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS;
 511
 512         memset(&attr, 0, sizeof(attr));
 513         attr.config = cache_type | (cache_op << 8) | (cache_result << 16);
 514         attr.type = PERF_TYPE_HW_CACHE;
 515
 516         if (head_config) {
 517                 if (config_attr(&attr, head_config, err,
 518                                 config_term_common))
 519                         return -EINVAL;
 520
 521                 if (get_config_terms(head_config, &config_terms))
 522                         return -ENOMEM;
 523         }
 524
 525         ret = parse_events__add_cache_hybrid(list, idx, &attr,
 526                                              config_name ? : name, &config_terms,
 527                                              &hybrid);
 528         if (hybrid)
 529                 return ret;
 530
 531         return add_event(list, idx, &attr, config_name ? : name, &config_terms);
 532 }
 533
 534 static void tracepoint_error(struct parse_events_error *e, int err,
 535                              const char *sys, const char *name)
 536 {
 537         const char *str;
 538         char help[BUFSIZ];
 539
 540         if (!e)
 541                 return;
 542
 543         /*
 544          * We get error directly from syscall errno ( > 0),
 545          * or from encoded pointer's error ( < 0).
 546          */
 547         err = abs(err);
 548
 549         switch (err) {
 550         case EACCES:
 551                 str = "can't access trace events";
 552                 break;
 553         case ENOENT:
 554                 str = "unknown tracepoint";
 555                 break;
 556         default:
 557                 str = "failed to add tracepoint";
 558                 break;
 559         }
 560
 561         tracing_path__strerror_open_tp(err, help, sizeof(help), sys, name);
 562         parse_events__handle_error(e, 0, strdup(str), strdup(help));
 563 }
 564
 565 static int add_tracepoint(struct list_head *list, int *idx,
 566                           const char *sys_name, const char *evt_name,
 567                           struct parse_events_error *err,
 568                           struct list_head *head_config)
 569 {
 570         struct evsel *evsel = evsel__newtp_idx(sys_name, evt_name, (*idx)++);
 571
 572         if (IS_ERR(evsel)) {
 573                 tracepoint_error(err, PTR_ERR(evsel), sys_name, evt_name);
 574                 return PTR_ERR(evsel);
 575         }
 576
 577         if (head_config) {
 578                 LIST_HEAD(config_terms);
 579
 580                 if (get_config_terms(head_config, &config_terms))
 581                         return -ENOMEM;
 582                 list_splice(&config_terms, &evsel->config_terms);
 583         }
 584
 585         list_add_tail(&evsel->core.node, list);
 586         return 0;
 587 }
 588
 589 static int add_tracepoint_multi_event(struct list_head *list, int *idx,
 590                                       const char *sys_name, const char *evt_name,
 591                                       struct parse_events_error *err,
 592                                       struct list_head *head_config)
 593 {
 594         char *evt_path;
 595         struct dirent *evt_ent;
 596         DIR *evt_dir;
 597         int ret = 0, found = 0;
 598
 599         evt_path = get_events_file(sys_name);
 600         if (!evt_path) {
 601                 tracepoint_error(err, errno, sys_name, evt_name);
 602                 return -1;
 603         }
 604         evt_dir = opendir(evt_path);
 605         if (!evt_dir) {
 606                 put_events_file(evt_path);
 607                 tracepoint_error(err, errno, sys_name, evt_name);
 608                 return -1;
 609         }
 610
 611         while (!ret && (evt_ent = readdir(evt_dir))) {
 612                 if (!strcmp(evt_ent->d_name, ".")
 613                     || !strcmp(evt_ent->d_name, "..")
 614                     || !strcmp(evt_ent->d_name, "enable")
 615                     || !strcmp(evt_ent->d_name, "filter"))
 616                         continue;
 617
 618                 if (!strglobmatch(evt_ent->d_name, evt_name))
 619                         continue;
 620
 621                 found++;
 622
 623                 ret = add_tracepoint(list, idx, sys_name, evt_ent->d_name,
 624                                      err, head_config);
 625         }
 626
 627         if (!found) {
 628                 tracepoint_error(err, ENOENT, sys_name, evt_name);
 629                 ret = -1;
 630         }
 631
 632         put_events_file(evt_path);
 633         closedir(evt_dir);
 634         return ret;
 635 }
 636
 637 static int add_tracepoint_event(struct list_head *list, int *idx,
 638                                 const char *sys_name, const char *evt_name,
 639                                 struct parse_events_error *err,
 640                                 struct list_head *head_config)
 641 {
 642         return strpbrk(evt_name, "*?") ?
 643                add_tracepoint_multi_event(list, idx, sys_name, evt_name,
 644                                           err, head_config) :
 645                add_tracepoint(list, idx, sys_name, evt_name,
 646                               err, head_config);
 647 }
 648
 649 static int add_tracepoint_multi_sys(struct list_head *list, int *idx,
 650                                     const char *sys_name, const char *evt_name,
 651                                     struct parse_events_error *err,
 652                                     struct list_head *head_config)
 653 {
 654         struct dirent *events_ent;
 655         DIR *events_dir;
 656         int ret = 0;
 657
 658         events_dir = tracing_events__opendir();
 659         if (!events_dir) {
 660                 tracepoint_error(err, errno, sys_name, evt_name);
 661                 return -1;
 662         }
 663
 664         while (!ret && (events_ent = readdir(events_dir))) {
 665                 if (!strcmp(events_ent->d_name, ".")
 666                     || !strcmp(events_ent->d_name, "..")
 667                     || !strcmp(events_ent->d_name, "enable")
 668                     || !strcmp(events_ent->d_name, "header_event")
 669                     || !strcmp(events_ent->d_name, "header_page"))
 670                         continue;
 671
 672                 if (!strglobmatch(events_ent->d_name, sys_name))
 673                         continue;
 674
 675                 ret = add_tracepoint_event(list, idx, events_ent->d_name,
 676                                            evt_name, err, head_config);
 677         }
 678
 679         closedir(events_dir);
 680         return ret;
 681 }
 682
 683 #ifdef HAVE_LIBBPF_SUPPORT
 684 struct __add_bpf_event_param {
 685         struct parse_events_state *parse_state;
 686         struct list_head *list;
 687         struct list_head *head_config;
 688 };
 689
 690 static int add_bpf_event(const char *group, const char *event, int fd, struct bpf_object *obj,
 691                          void *_param)
 692 {
 693         LIST_HEAD(new_evsels);
 694         struct __add_bpf_event_param *param = _param;
 695         struct parse_events_state *parse_state = param->parse_state;
 696         struct list_head *list = param->list;
 697         struct evsel *pos;
 698         int err;
 699         /*
 700          * Check if we should add the event, i.e. if it is a TP but starts with a '!',
 701          * then don't add the tracepoint, this will be used for something else, like
 702          * adding to a BPF_MAP_TYPE_PROG_ARRAY.
 703          *
 704          * See tools/perf/examples/bpf/augmented_raw_syscalls.c
 705          */
 706         if (group[0] == '!')
 707                 return 0;
 708
 709         pr_debug("add bpf event %s:%s and attach bpf program %d\n",
 710                  group, event, fd);
 711
 712         err = parse_events_add_tracepoint(&new_evsels, &parse_state->idx, group,
 713                                           event, parse_state->error,
 714                                           param->head_config);
 715         if (err) {
 716                 struct evsel *evsel, *tmp;
 717
 718                 pr_debug("Failed to add BPF event %s:%s\n",
 719                          group, event);
 720                 list_for_each_entry_safe(evsel, tmp, &new_evsels, core.node) {
 721                         list_del_init(&evsel->core.node);
 722                         evsel__delete(evsel);
 723                 }
 724                 return err;
 725         }
 726         pr_debug("adding %s:%s\n", group, event);
 727
 728         list_for_each_entry(pos, &new_evsels, core.node) {
 729                 pr_debug("adding %s:%s to %p\n",
 730                          group, event, pos);
 731                 pos->bpf_fd = fd;
 732                 pos->bpf_obj = obj;
 733         }
 734         list_splice(&new_evsels, list);
 735         return 0;
 736 }
 737
 738 int parse_events_load_bpf_obj(struct parse_events_state *parse_state,
 739                               struct list_head *list,
 740                               struct bpf_object *obj,
 741                               struct list_head *head_config)
 742 {
 743         int err;
 744         char errbuf[BUFSIZ];
 745         struct __add_bpf_event_param param = {parse_state, list, head_config};
 746         static bool registered_unprobe_atexit = false;
 747
 748         if (IS_ERR(obj) || !obj) {
 749                 snprintf(errbuf, sizeof(errbuf),
 750                          "Internal error: load bpf obj with NULL");
 751                 err = -EINVAL;
 752                 goto errout;
 753         }
 754
 755         /*
 756          * Register atexit handler before calling bpf__probe() so
 757          * bpf__probe() don't need to unprobe probe points its already
 758          * created when failure.
 759          */
 760         if (!registered_unprobe_atexit) {
 761                 atexit(bpf__clear);
 762                 registered_unprobe_atexit = true;
 763         }
 764
 765         err = bpf__probe(obj);
 766         if (err) {
 767                 bpf__strerror_probe(obj, err, errbuf, sizeof(errbuf));
 768                 goto errout;
 769         }
 770
 771         err = bpf__load(obj);
 772         if (err) {
 773                 bpf__strerror_load(obj, err, errbuf, sizeof(errbuf));
 774                 goto errout;
 775         }
 776
 777         err = bpf__foreach_event(obj, add_bpf_event, &param);
 778         if (err) {
 779                 snprintf(errbuf, sizeof(errbuf),
 780                          "Attach events in BPF object failed");
 781                 goto errout;
 782         }
 783
 784         return 0;
 785 errout:
 786         parse_events__handle_error(parse_state->error, 0,
 787                                 strdup(errbuf), strdup("(add -v to see detail)"));
 788         return err;
 789 }
 790
 791 static int
 792 parse_events_config_bpf(struct parse_events_state *parse_state,
 793                         struct bpf_object *obj,
 794                         struct list_head *head_config)
 795 {
 796         struct parse_events_term *term;
 797         int error_pos;
 798
 799         if (!head_config || list_empty(head_config))
 800                 return 0;
 801
 802         list_for_each_entry(term, head_config, list) {
 803                 int err;
 804
 805                 if (term->type_term != PARSE_EVENTS__TERM_TYPE_USER) {
 806                         parse_events__handle_error(parse_state->error, term->err_term,
 807                                                 strdup("Invalid config term for BPF object"),
 808                                                 NULL);
 809                         return -EINVAL;
 810                 }
 811
 812                 err = bpf__config_obj(obj, term, parse_state->evlist, &error_pos);
 813                 if (err) {
 814                         char errbuf[BUFSIZ];
 815                         int idx;
 816
 817                         bpf__strerror_config_obj(obj, term, parse_state->evlist,
 818                                                  &error_pos, err, errbuf,
 819                                                  sizeof(errbuf));
 820
 821                         if (err == -BPF_LOADER_ERRNO__OBJCONF_MAP_VALUE)
 822                                 idx = term->err_val;
 823                         else
 824                                 idx = term->err_term + error_pos;
 825
 826                         parse_events__handle_error(parse_state->error, idx,
 827                                                 strdup(errbuf),
 828                                                 strdup(
 829 "Hint:\tValid config terms:\n"
 830 "     \tmap:[<arraymap>].value<indices>=[value]\n"
 831 "     \tmap:[<eventmap>].event<indices>=[event]\n"
 832 "\n"
 833 "     \twhere <indices> is something like [0,3...5] or [all]\n"
 834 "     \t(add -v to see detail)"));
 835                         return err;
 836                 }
 837         }
 838         return 0;
 839 }
 840
 841 /*
 842  * Split config terms:
 843  * perf record -e bpf.c/call-graph=fp,map:array.value[0]=1/ ...
 844  *  'call-graph=fp' is 'evt config', should be applied to each
 845  *  events in bpf.c.
 846  * 'map:array.value[0]=1' is 'obj config', should be processed
 847  * with parse_events_config_bpf.
 848  *
 849  * Move object config terms from the first list to obj_head_config.
 850  */
 851 static void
 852 split_bpf_config_terms(struct list_head *evt_head_config,
 853                        struct list_head *obj_head_config)
 854 {
 855         struct parse_events_term *term, *temp;
 856
 857         /*
 858          * Currently, all possible user config term
 859          * belong to bpf object. parse_events__is_hardcoded_term()
 860          * happens to be a good flag.
 861          *
 862          * See parse_events_config_bpf() and
 863          * config_term_tracepoint().
 864          */
 865         list_for_each_entry_safe(term, temp, evt_head_config, list)
 866                 if (!parse_events__is_hardcoded_term(term))
 867                         list_move_tail(&term->list, obj_head_config);
 868 }
 869
 870 int parse_events_load_bpf(struct parse_events_state *parse_state,
 871                           struct list_head *list,
 872                           char *bpf_file_name,
 873                           bool source,
 874                           struct list_head *head_config)
 875 {
 876         int err;
 877         struct bpf_object *obj;
 878         LIST_HEAD(obj_head_config);
 879
 880         if (head_config)
 881                 split_bpf_config_terms(head_config, &obj_head_config);
 882
 883         obj = bpf__prepare_load(bpf_file_name, source);
 884         if (IS_ERR(obj)) {
 885                 char errbuf[BUFSIZ];
 886
 887                 err = PTR_ERR(obj);
 888
 889                 if (err == -ENOTSUP)
 890                         snprintf(errbuf, sizeof(errbuf),
 891                                  "BPF support is not compiled");
 892                 else
 893                         bpf__strerror_prepare_load(bpf_file_name,
 894                                                    source,
 895                                                    -err, errbuf,
 896                                                    sizeof(errbuf));
 897
 898                 parse_events__handle_error(parse_state->error, 0,
 899                                         strdup(errbuf), strdup("(add -v to see detail)"));
 900                 return err;
 901         }
 902
 903         err = parse_events_load_bpf_obj(parse_state, list, obj, head_config);
 904         if (err)
 905                 return err;
 906         err = parse_events_config_bpf(parse_state, obj, &obj_head_config);
 907
 908         /*
 909          * Caller doesn't know anything about obj_head_config,
 910          * so combine them together again before returning.
 911          */
 912         if (head_config)
 913                 list_splice_tail(&obj_head_config, head_config);
 914         return err;
 915 }
 916 #else // HAVE_LIBBPF_SUPPORT
 917 int parse_events_load_bpf_obj(struct parse_events_state *parse_state,
 918                               struct list_head *list __maybe_unused,
 919                               struct bpf_object *obj __maybe_unused,
 920                               struct list_head *head_config __maybe_unused)
 921 {
 922         parse_events__handle_error(parse_state->error, 0,
 923                                    strdup("BPF support is not compiled"),
 924                                    strdup("Make sure libbpf-devel is available at build time."));
 925         return -ENOTSUP;
 926 }
 927
 928 int parse_events_load_bpf(struct parse_events_state *parse_state,
 929                           struct list_head *list __maybe_unused,
 930                           char *bpf_file_name __maybe_unused,
 931                           bool source __maybe_unused,
 932                           struct list_head *head_config __maybe_unused)
 933 {
 934         parse_events__handle_error(parse_state->error, 0,
 935                                    strdup("BPF support is not compiled"),
 936                                    strdup("Make sure libbpf-devel is available at build time."));
 937         return -ENOTSUP;
 938 }
 939 #endif // HAVE_LIBBPF_SUPPORT
 940
 941 static int
 942 parse_breakpoint_type(const char *type, struct perf_event_attr *attr)
 943 {
 944         int i;
 945
 946         for (i = 0; i < 3; i++) {
 947                 if (!type || !type[i])
 948                         break;
 949
 950 #define CHECK_SET_TYPE(bit)             \
 951 do {                                    \
 952         if (attr->bp_type & bit)        \
 953                 return -EINVAL;         \
 954         else                            \
 955                 attr->bp_type |= bit;   \
 956 } while (0)
 957
 958                 switch (type[i]) {
 959                 case 'r':
 960                         CHECK_SET_TYPE(HW_BREAKPOINT_R);
 961                         break;
 962                 case 'w':
 963                         CHECK_SET_TYPE(HW_BREAKPOINT_W);
 964                         break;
 965                 case 'x':
 966                         CHECK_SET_TYPE(HW_BREAKPOINT_X);
 967                         break;
 968                 default:
 969                         return -EINVAL;
 970                 }
 971         }
 972
 973 #undef CHECK_SET_TYPE
 974
 975         if (!attr->bp_type) /* Default */
 976                 attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W;
 977
 978         return 0;
 979 }
 980
 981 int parse_events_add_breakpoint(struct list_head *list, int *idx,
 982                                 u64 addr, char *type, u64 len)
 983 {
 984         struct perf_event_attr attr;
 985
 986         memset(&attr, 0, sizeof(attr));
 987         attr.bp_addr = addr;
 988
 989         if (parse_breakpoint_type(type, &attr))
 990                 return -EINVAL;
 991
 992         /* Provide some defaults if len is not specified */
 993         if (!len) {
 994                 if (attr.bp_type == HW_BREAKPOINT_X)
 995                         len = sizeof(long);
 996                 else
 997                         len = HW_BREAKPOINT_LEN_4;
 998         }
 999
1000         attr.bp_len = len;
1001
1002         attr.type = PERF_TYPE_BREAKPOINT;
1003         attr.sample_period = 1;
1004
1005         return add_event(list, idx, &attr, NULL, NULL);
1006 }
1007
1008 static int check_type_val(struct parse_events_term *term,
1009                           struct parse_events_error *err,
1010                           int type)
1011 {
1012         if (type == term->type_val)
1013                 return 0;
1014
1015         if (err) {
1016                 parse_events__handle_error(err, term->err_val,
1017                                         type == PARSE_EVENTS__TERM_TYPE_NUM
1018                                         ? strdup("expected numeric value")
1019                                         : strdup("expected string value"),
1020                                         NULL);
1021         }
1022         return -EINVAL;
1023 }
1024
1025 /*
1026  * Update according to parse-events.l
1027  */
1028 static const char *config_term_names[__PARSE_EVENTS__TERM_TYPE_NR] = {
1029         [PARSE_EVENTS__TERM_TYPE_USER]                  = "<sysfs term>",
1030         [PARSE_EVENTS__TERM_TYPE_CONFIG]                = "config",
1031         [PARSE_EVENTS__TERM_TYPE_CONFIG1]               = "config1",
1032         [PARSE_EVENTS__TERM_TYPE_CONFIG2]               = "config2",
1033         [PARSE_EVENTS__TERM_TYPE_NAME]                  = "name",
1034         [PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD]         = "period",
1035         [PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ]           = "freq",
1036         [PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE]    = "branch_type",
1037         [PARSE_EVENTS__TERM_TYPE_TIME]                  = "time",
1038         [PARSE_EVENTS__TERM_TYPE_CALLGRAPH]             = "call-graph",
1039         [PARSE_EVENTS__TERM_TYPE_STACKSIZE]             = "stack-size",
1040         [PARSE_EVENTS__TERM_TYPE_NOINHERIT]             = "no-inherit",
1041         [PARSE_EVENTS__TERM_TYPE_INHERIT]               = "inherit",
1042         [PARSE_EVENTS__TERM_TYPE_MAX_STACK]             = "max-stack",
1043         [PARSE_EVENTS__TERM_TYPE_MAX_EVENTS]            = "nr",
1044         [PARSE_EVENTS__TERM_TYPE_OVERWRITE]             = "overwrite",
1045         [PARSE_EVENTS__TERM_TYPE_NOOVERWRITE]           = "no-overwrite",
1046         [PARSE_EVENTS__TERM_TYPE_DRV_CFG]               = "driver-config",
1047         [PARSE_EVENTS__TERM_TYPE_PERCORE]               = "percore",
1048         [PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT]            = "aux-output",
1049         [PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE]       = "aux-sample-size",
1050 };
1051
1052 static bool config_term_shrinked;
1053
1054 static bool
1055 config_term_avail(int term_type, struct parse_events_error *err)
1056 {
1057         char *err_str;
1058
1059         if (term_type < 0 || term_type >= __PARSE_EVENTS__TERM_TYPE_NR) {
1060                 parse_events__handle_error(err, -1,
1061                                         strdup("Invalid term_type"), NULL);
1062                 return false;
1063         }
1064         if (!config_term_shrinked)
1065                 return true;
1066
1067         switch (term_type) {
1068         case PARSE_EVENTS__TERM_TYPE_CONFIG:
1069         case PARSE_EVENTS__TERM_TYPE_CONFIG1:
1070         case PARSE_EVENTS__TERM_TYPE_CONFIG2:
1071         case PARSE_EVENTS__TERM_TYPE_NAME:
1072         case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
1073         case PARSE_EVENTS__TERM_TYPE_PERCORE:
1074                 return true;
1075         default:
1076                 if (!err)
1077                         return false;
1078
1079                 /* term_type is validated so indexing is safe */
1080                 if (asprintf(&err_str, "'%s' is not usable in 'perf stat'",
1081                                 config_term_names[term_type]) >= 0)
1082                         parse_events__handle_error(err, -1, err_str, NULL);
1083                 return false;
1084         }
1085 }
1086
1087 void parse_events__shrink_config_terms(void)
1088 {
1089         config_term_shrinked = true;
1090 }
1091
1092 static int config_term_common(struct perf_event_attr *attr,
1093                               struct parse_events_term *term,
1094                               struct parse_events_error *err)
1095 {
1096 #define CHECK_TYPE_VAL(type)                                               \
1097 do {                                                                       \
1098         if (check_type_val(term, err, PARSE_EVENTS__TERM_TYPE_ ## type)) \
1099                 return -EINVAL;                                            \
1100 } while (0)
1101
1102         switch (term->type_term) {
1103         case PARSE_EVENTS__TERM_TYPE_CONFIG:
1104                 CHECK_TYPE_VAL(NUM);
1105                 attr->config = term->val.num;
1106                 break;
1107         case PARSE_EVENTS__TERM_TYPE_CONFIG1:
1108                 CHECK_TYPE_VAL(NUM);
1109                 attr->config1 = term->val.num;
1110                 break;
1111         case PARSE_EVENTS__TERM_TYPE_CONFIG2:
1112                 CHECK_TYPE_VAL(NUM);
1113                 attr->config2 = term->val.num;
1114                 break;
1115         case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
1116                 CHECK_TYPE_VAL(NUM);
1117                 break;
1118         case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
1119                 CHECK_TYPE_VAL(NUM);
1120                 break;
1121         case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
1122                 CHECK_TYPE_VAL(STR);
1123                 if (strcmp(term->val.str, "no") &&
1124                     parse_branch_str(term->val.str,
1125                                     &attr->branch_sample_type)) {
1126                         parse_events__handle_error(err, term->err_val,
1127                                         strdup("invalid branch sample type"),
1128                                         NULL);
1129                         return -EINVAL;
1130                 }
1131                 break;
1132         case PARSE_EVENTS__TERM_TYPE_TIME:
1133                 CHECK_TYPE_VAL(NUM);
1134                 if (term->val.num > 1) {
1135                         parse_events__handle_error(err, term->err_val,
1136                                                 strdup("expected 0 or 1"),
1137                                                 NULL);
1138                         return -EINVAL;
1139                 }
1140                 break;
1141         case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
1142                 CHECK_TYPE_VAL(STR);
1143                 break;
1144         case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1145                 CHECK_TYPE_VAL(NUM);
1146                 break;
1147         case PARSE_EVENTS__TERM_TYPE_INHERIT:
1148                 CHECK_TYPE_VAL(NUM);
1149                 break;
1150         case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1151                 CHECK_TYPE_VAL(NUM);
1152                 break;
1153         case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1154                 CHECK_TYPE_VAL(NUM);
1155                 break;
1156         case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1157                 CHECK_TYPE_VAL(NUM);
1158                 break;
1159         case PARSE_EVENTS__TERM_TYPE_NAME:
1160                 CHECK_TYPE_VAL(STR);
1161                 break;
1162         case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1163                 CHECK_TYPE_VAL(NUM);
1164                 break;
1165         case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS:
1166                 CHECK_TYPE_VAL(NUM);
1167                 break;
1168         case PARSE_EVENTS__TERM_TYPE_PERCORE:
1169                 CHECK_TYPE_VAL(NUM);
1170                 if ((unsigned int)term->val.num > 1) {
1171                         parse_events__handle_error(err, term->err_val,
1172                                                 strdup("expected 0 or 1"),
1173                                                 NULL);
1174                         return -EINVAL;
1175                 }
1176                 break;
1177         case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT:
1178                 CHECK_TYPE_VAL(NUM);
1179                 break;
1180         case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE:
1181                 CHECK_TYPE_VAL(NUM);
1182                 if (term->val.num > UINT_MAX) {
1183                         parse_events__handle_error(err, term->err_val,
1184                                                 strdup("too big"),
1185                                                 NULL);
1186                         return -EINVAL;
1187                 }
1188                 break;
1189         default:
1190                 parse_events__handle_error(err, term->err_term,
1191                                 strdup("unknown term"),
1192                                 parse_events_formats_error_string(NULL));
1193                 return -EINVAL;
1194         }
1195
1196         /*
1197          * Check term availability after basic checking so
1198          * PARSE_EVENTS__TERM_TYPE_USER can be found and filtered.
1199          *
1200          * If check availability at the entry of this function,
1201          * user will see "'<sysfs term>' is not usable in 'perf stat'"
1202          * if an invalid config term is provided for legacy events
1203          * (for example, instructions/badterm/...), which is confusing.
1204          */
1205         if (!config_term_avail(term->type_term, err))
1206                 return -EINVAL;
1207         return 0;
1208 #undef CHECK_TYPE_VAL
1209 }
1210
1211 static int config_term_pmu(struct perf_event_attr *attr,
1212                            struct parse_events_term *term,
1213                            struct parse_events_error *err)
1214 {
1215         if (term->type_term == PARSE_EVENTS__TERM_TYPE_USER ||
1216             term->type_term == PARSE_EVENTS__TERM_TYPE_DRV_CFG)
1217                 /*
1218                  * Always succeed for sysfs terms, as we dont know
1219                  * at this point what type they need to have.
1220                  */
1221                 return 0;
1222         else
1223                 return config_term_common(attr, term, err);
1224 }
1225
1226 static int config_term_tracepoint(struct perf_event_attr *attr,
1227                                   struct parse_events_term *term,
1228                                   struct parse_events_error *err)
1229 {
1230         switch (term->type_term) {
1231         case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
1232         case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1233         case PARSE_EVENTS__TERM_TYPE_INHERIT:
1234         case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1235         case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1236         case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS:
1237         case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1238         case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1239         case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT:
1240         case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE:
1241                 return config_term_common(attr, term, err);
1242         default:
1243                 if (err) {
1244                         parse_events__handle_error(err, term->err_term,
1245                                 strdup("unknown term"),
1246                                 strdup("valid terms: call-graph,stack-size\n"));
1247                 }
1248                 return -EINVAL;
1249         }
1250
1251         return 0;
1252 }
1253
1254 static int config_attr(struct perf_event_attr *attr,
1255                        struct list_head *head,
1256                        struct parse_events_error *err,
1257                        config_term_func_t config_term)
1258 {
1259         struct parse_events_term *term;
1260
1261         list_for_each_entry(term, head, list)
1262                 if (config_term(attr, term, err))
1263                         return -EINVAL;
1264
1265         return 0;
1266 }
1267
1268 static int get_config_terms(struct list_head *head_config,
1269                             struct list_head *head_terms __maybe_unused)
1270 {
1271 #define ADD_CONFIG_TERM(__type, __weak)                         \
1272         struct evsel_config_term *__t;                  \
1273                                                                 \
1274         __t = zalloc(sizeof(*__t));                             \
1275         if (!__t)                                               \
1276                 return -ENOMEM;                                 \
1277                                                                 \
1278         INIT_LIST_HEAD(&__t->list);                             \
1279         __t->type       = EVSEL__CONFIG_TERM_ ## __type;        \
1280         __t->weak       = __weak;                               \
1281         list_add_tail(&__t->list, head_terms)
1282
1283 #define ADD_CONFIG_TERM_VAL(__type, __name, __val, __weak)      \
1284 do {                                                            \
1285         ADD_CONFIG_TERM(__type, __weak);                        \
1286         __t->val.__name = __val;                                \
1287 } while (0)
1288
1289 #define ADD_CONFIG_TERM_STR(__type, __val, __weak)              \
1290 do {                                                            \
1291         ADD_CONFIG_TERM(__type, __weak);                        \
1292         __t->val.str = strdup(__val);                           \
1293         if (!__t->val.str) {                                    \
1294                 zfree(&__t);                                    \
1295                 return -ENOMEM;                                 \
1296         }                                                       \
1297         __t->free_str = true;                                   \
1298 } while (0)
1299
1300         struct parse_events_term *term;
1301
1302         list_for_each_entry(term, head_config, list) {
1303                 switch (term->type_term) {
1304                 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
1305                         ADD_CONFIG_TERM_VAL(PERIOD, period, term->val.num, term->weak);
1306                         break;
1307                 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
1308                         ADD_CONFIG_TERM_VAL(FREQ, freq, term->val.num, term->weak);
1309                         break;
1310                 case PARSE_EVENTS__TERM_TYPE_TIME:
1311                         ADD_CONFIG_TERM_VAL(TIME, time, term->val.num, term->weak);
1312                         break;
1313                 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
1314                         ADD_CONFIG_TERM_STR(CALLGRAPH, term->val.str, term->weak);
1315                         break;
1316                 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
1317                         ADD_CONFIG_TERM_STR(BRANCH, term->val.str, term->weak);
1318                         break;
1319                 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1320                         ADD_CONFIG_TERM_VAL(STACK_USER, stack_user,
1321                                             term->val.num, term->weak);
1322                         break;
1323                 case PARSE_EVENTS__TERM_TYPE_INHERIT:
1324                         ADD_CONFIG_TERM_VAL(INHERIT, inherit,
1325                                             term->val.num ? 1 : 0, term->weak);
1326                         break;
1327                 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1328                         ADD_CONFIG_TERM_VAL(INHERIT, inherit,
1329                                             term->val.num ? 0 : 1, term->weak);
1330                         break;
1331                 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1332                         ADD_CONFIG_TERM_VAL(MAX_STACK, max_stack,
1333                                             term->val.num, term->weak);
1334                         break;
1335                 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS:
1336                         ADD_CONFIG_TERM_VAL(MAX_EVENTS, max_events,
1337                                             term->val.num, term->weak);
1338                         break;
1339                 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1340                         ADD_CONFIG_TERM_VAL(OVERWRITE, overwrite,
1341                                             term->val.num ? 1 : 0, term->weak);
1342                         break;
1343                 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1344                         ADD_CONFIG_TERM_VAL(OVERWRITE, overwrite,
1345                                             term->val.num ? 0 : 1, term->weak);
1346                         break;
1347                 case PARSE_EVENTS__TERM_TYPE_DRV_CFG:
1348                         ADD_CONFIG_TERM_STR(DRV_CFG, term->val.str, term->weak);
1349                         break;
1350                 case PARSE_EVENTS__TERM_TYPE_PERCORE:
1351                         ADD_CONFIG_TERM_VAL(PERCORE, percore,
1352                                             term->val.num ? true : false, term->weak);
1353                         break;
1354                 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT:
1355                         ADD_CONFIG_TERM_VAL(AUX_OUTPUT, aux_output,
1356                                             term->val.num ? 1 : 0, term->weak);
1357                         break;
1358                 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE:
1359                         ADD_CONFIG_TERM_VAL(AUX_SAMPLE_SIZE, aux_sample_size,
1360                                             term->val.num, term->weak);
1361                         break;
1362                 default:
1363                         break;
1364                 }
1365         }
1366         return 0;
1367 }
1368
1369 /*
1370  * Add EVSEL__CONFIG_TERM_CFG_CHG where cfg_chg will have a bit set for
1371  * each bit of attr->config that the user has changed.
1372  */
1373 static int get_config_chgs(struct perf_pmu *pmu, struct list_head *head_config,
1374                            struct list_head *head_terms)
1375 {
1376         struct parse_events_term *term;
1377         u64 bits = 0;
1378         int type;
1379
1380         list_for_each_entry(term, head_config, list) {
1381                 switch (term->type_term) {
1382                 case PARSE_EVENTS__TERM_TYPE_USER:
1383                         type = perf_pmu__format_type(&pmu->format, term->config);
1384                         if (type != PERF_PMU_FORMAT_VALUE_CONFIG)
1385                                 continue;
1386                         bits |= perf_pmu__format_bits(&pmu->format, term->config);
1387                         break;
1388                 case PARSE_EVENTS__TERM_TYPE_CONFIG:
1389                         bits = ~(u64)0;
1390                         break;
1391                 default:
1392                         break;
1393                 }
1394         }
1395
1396         if (bits)
1397                 ADD_CONFIG_TERM_VAL(CFG_CHG, cfg_chg, bits, false);
1398
1399 #undef ADD_CONFIG_TERM
1400         return 0;
1401 }
1402
1403 int parse_events_add_tracepoint(struct list_head *list, int *idx,
1404                                 const char *sys, const char *event,
1405                                 struct parse_events_error *err,
1406                                 struct list_head *head_config)
1407 {
1408         if (head_config) {
1409                 struct perf_event_attr attr;
1410
1411                 if (config_attr(&attr, head_config, err,
1412                                 config_term_tracepoint))
1413                         return -EINVAL;
1414         }
1415
1416         if (strpbrk(sys, "*?"))
1417                 return add_tracepoint_multi_sys(list, idx, sys, event,
1418                                                 err, head_config);
1419         else
1420                 return add_tracepoint_event(list, idx, sys, event,
1421                                             err, head_config);
1422 }
1423
1424 int parse_events_add_numeric(struct parse_events_state *parse_state,
1425                              struct list_head *list,
1426                              u32 type, u64 config,
1427                              struct list_head *head_config)
1428 {
1429         struct perf_event_attr attr;
1430         LIST_HEAD(config_terms);
1431         bool hybrid;
1432         int ret;
1433
1434         memset(&attr, 0, sizeof(attr));
1435         attr.type = type;
1436         attr.config = config;
1437
1438         if (head_config) {
1439                 if (config_attr(&attr, head_config, parse_state->error,
1440                                 config_term_common))
1441                         return -EINVAL;
1442
1443                 if (get_config_terms(head_config, &config_terms))
1444                         return -ENOMEM;
1445         }
1446
1447         ret = parse_events__add_numeric_hybrid(parse_state, list, &attr,
1448                                                get_config_name(head_config),
1449                                                &config_terms, &hybrid);
1450         if (hybrid)
1451                 return ret;
1452
1453         return add_event(list, &parse_state->idx, &attr,
1454                          get_config_name(head_config), &config_terms);
1455 }
1456
1457 int parse_events_add_tool(struct parse_events_state *parse_state,
1458                           struct list_head *list,
1459                           enum perf_tool_event tool_event)
1460 {
1461         return add_event_tool(list, &parse_state->idx, tool_event);
1462 }
1463
1464 static bool config_term_percore(struct list_head *config_terms)
1465 {
1466         struct evsel_config_term *term;
1467
1468         list_for_each_entry(term, config_terms, list) {
1469                 if (term->type == EVSEL__CONFIG_TERM_PERCORE)
1470                         return term->val.percore;
1471         }
1472
1473         return false;
1474 }
1475
1476 int parse_events_add_pmu(struct parse_events_state *parse_state,
1477                          struct list_head *list, char *name,
1478                          struct list_head *head_config,
1479                          bool auto_merge_stats,
1480                          bool use_alias)
1481 {
1482         struct perf_event_attr attr;
1483         struct perf_pmu_info info;
1484         struct perf_pmu *pmu;
1485         struct evsel *evsel;
1486         struct parse_events_error *err = parse_state->error;
1487         bool use_uncore_alias;
1488         LIST_HEAD(config_terms);
1489
1490         if (verbose > 1) {
1491                 fprintf(stderr, "Attempting to add event pmu '%s' with '",
1492                         name);
1493                 if (head_config) {
1494                         struct parse_events_term *term;
1495
1496                         list_for_each_entry(term, head_config, list) {
1497                                 fprintf(stderr, "%s,", term->config);
1498                         }
1499                 }
1500                 fprintf(stderr, "' that may result in non-fatal errors\n");
1501         }
1502
1503         pmu = parse_state->fake_pmu ?: perf_pmu__find(name);
1504         if (!pmu) {
1505                 char *err_str;
1506
1507                 if (asprintf(&err_str,
1508                                 "Cannot find PMU `%s'. Missing kernel support?",
1509                                 name) >= 0)
1510                         parse_events__handle_error(err, 0, err_str, NULL);
1511                 return -EINVAL;
1512         }
1513
1514         if (pmu->default_config) {
1515                 memcpy(&attr, pmu->default_config,
1516                        sizeof(struct perf_event_attr));
1517         } else {
1518                 memset(&attr, 0, sizeof(attr));
1519         }
1520
1521         use_uncore_alias = (pmu->is_uncore && use_alias);
1522
1523         if (!head_config) {
1524                 attr.type = pmu->type;
1525                 evsel = __add_event(list, &parse_state->idx, &attr, true, NULL,
1526                                     pmu, NULL, auto_merge_stats, NULL);
1527                 if (evsel) {
1528                         evsel->pmu_name = name ? strdup(name) : NULL;
1529                         evsel->use_uncore_alias = use_uncore_alias;
1530                         return 0;
1531                 } else {
1532                         return -ENOMEM;
1533                 }
1534         }
1535
1536         if (!parse_state->fake_pmu && perf_pmu__check_alias(pmu, head_config, &info))
1537                 return -EINVAL;
1538
1539         if (verbose > 1) {
1540                 fprintf(stderr, "After aliases, add event pmu '%s' with '",
1541                         name);
1542                 if (head_config) {
1543                         struct parse_events_term *term;
1544
1545                         list_for_each_entry(term, head_config, list) {
1546                                 fprintf(stderr, "%s,", term->config);
1547                         }
1548                 }
1549                 fprintf(stderr, "' that may result in non-fatal errors\n");
1550         }
1551
1552         /*
1553          * Configure hardcoded terms first, no need to check
1554          * return value when called with fail == 0 ;)
1555          */
1556         if (config_attr(&attr, head_config, parse_state->error, config_term_pmu))
1557                 return -EINVAL;
1558
1559         if (get_config_terms(head_config, &config_terms))
1560                 return -ENOMEM;
1561
1562         /*
1563          * When using default config, record which bits of attr->config were
1564          * changed by the user.
1565          */
1566         if (pmu->default_config && get_config_chgs(pmu, head_config, &config_terms))
1567                 return -ENOMEM;
1568
1569         if (!parse_state->fake_pmu && perf_pmu__config(pmu, &attr, head_config, parse_state->error)) {
1570                 struct evsel_config_term *pos, *tmp;
1571
1572                 list_for_each_entry_safe(pos, tmp, &config_terms, list) {
1573                         list_del_init(&pos->list);
1574                         if (pos->free_str)
1575                                 zfree(&pos->val.str);
1576                         free(pos);
1577                 }
1578                 return -EINVAL;
1579         }
1580
1581         evsel = __add_event(list, &parse_state->idx, &attr, true,
1582                             get_config_name(head_config), pmu,
1583                             &config_terms, auto_merge_stats, NULL);
1584         if (!evsel)
1585                 return -ENOMEM;
1586
1587         if (evsel->name)
1588                 evsel->use_config_name = true;
1589
1590         evsel->pmu_name = name ? strdup(name) : NULL;
1591         evsel->use_uncore_alias = use_uncore_alias;
1592         evsel->percore = config_term_percore(&evsel->config_terms);
1593
1594         if (parse_state->fake_pmu)
1595                 return 0;
1596
1597         evsel->unit = info.unit;
1598         evsel->scale = info.scale;
1599         evsel->per_pkg = info.per_pkg;
1600         evsel->snapshot = info.snapshot;
1601         evsel->metric_expr = info.metric_expr;
1602         evsel->metric_name = info.metric_name;
1603         return 0;
1604 }
1605
1606 int parse_events_multi_pmu_add(struct parse_events_state *parse_state,
1607                                char *str, struct list_head **listp)
1608 {
1609         struct parse_events_term *term;
1610         struct list_head *list;
1611         struct perf_pmu *pmu = NULL;
1612         int ok = 0;
1613
1614         *listp = NULL;
1615         /* Add it for all PMUs that support the alias */
1616         list = malloc(sizeof(struct list_head));
1617         if (!list)
1618                 return -1;
1619         INIT_LIST_HEAD(list);
1620         while ((pmu = perf_pmu__scan(pmu)) != NULL) {
1621                 struct perf_pmu_alias *alias;
1622
1623                 list_for_each_entry(alias, &pmu->aliases, list) {
1624                         if (!strcasecmp(alias->name, str)) {
1625                                 struct list_head *head;
1626                                 char *config;
1627
1628                                 head = malloc(sizeof(struct list_head));
1629                                 if (!head)
1630                                         return -1;
1631                                 INIT_LIST_HEAD(head);
1632                                 config = strdup(str);
1633                                 if (!config)
1634                                         return -1;
1635                                 if (parse_events_term__num(&term,
1636                                                    PARSE_EVENTS__TERM_TYPE_USER,
1637                                                    config, 1, false, &config,
1638                                                    NULL) < 0) {
1639                                         free(list);
1640                                         free(config);
1641                                         return -1;
1642                                 }
1643                                 list_add_tail(&term->list, head);
1644
1645                                 if (!parse_events_add_pmu(parse_state, list,
1646                                                           pmu->name, head,
1647                                                           true, true)) {
1648                                         pr_debug("%s -> %s/%s/\n", str,
1649                                                  pmu->name, alias->str);
1650                                         ok++;
1651                                 }
1652
1653                                 parse_events_terms__delete(head);
1654                         }
1655                 }
1656         }
1657         if (!ok) {
1658                 free(list);
1659                 return -1;
1660         }
1661         *listp = list;
1662         return 0;
1663 }
1664
1665 int parse_events__modifier_group(struct list_head *list,
1666                                  char *event_mod)
1667 {
1668         return parse_events__modifier_event(list, event_mod, true);
1669 }
1670
1671 /*
1672  * Check if the two uncore PMUs are from the same uncore block
1673  * The format of the uncore PMU name is uncore_#blockname_#pmuidx
1674  */
1675 static bool is_same_uncore_block(const char *pmu_name_a, const char *pmu_name_b)
1676 {
1677         char *end_a, *end_b;
1678
1679         end_a = strrchr(pmu_name_a, '_');
1680         end_b = strrchr(pmu_name_b, '_');
1681
1682         if (!end_a || !end_b)
1683                 return false;
1684
1685         if ((end_a - pmu_name_a) != (end_b - pmu_name_b))
1686                 return false;
1687
1688         return (strncmp(pmu_name_a, pmu_name_b, end_a - pmu_name_a) == 0);
1689 }
1690
1691 static int
1692 parse_events__set_leader_for_uncore_aliase(char *name, struct list_head *list,
1693                                            struct parse_events_state *parse_state)
1694 {
1695         struct evsel *evsel, *leader;
1696         uintptr_t *leaders;
1697         bool is_leader = true;
1698         int i, nr_pmu = 0, total_members, ret = 0;
1699
1700         leader = list_first_entry(list, struct evsel, core.node);
1701         evsel = list_last_entry(list, struct evsel, core.node);
1702         total_members = evsel->idx - leader->idx + 1;
1703
1704         leaders = calloc(total_members, sizeof(uintptr_t));
1705         if (WARN_ON(!leaders))
1706                 return 0;
1707
1708         /*
1709          * Going through the whole group and doing sanity check.
1710          * All members must use alias, and be from the same uncore block.
1711          * Also, storing the leader events in an array.
1712          */
1713         __evlist__for_each_entry(list, evsel) {
1714
1715                 /* Only split the uncore group which members use alias */
1716                 if (!evsel->use_uncore_alias)
1717                         goto out;
1718
1719                 /* The events must be from the same uncore block */
1720                 if (!is_same_uncore_block(leader->pmu_name, evsel->pmu_name))
1721                         goto out;
1722
1723                 if (!is_leader)
1724                         continue;
1725                 /*
1726                  * If the event's PMU name starts to repeat, it must be a new
1727                  * event. That can be used to distinguish the leader from
1728                  * other members, even they have the same event name.
1729                  */
1730                 if ((leader != evsel) &&
1731                     !strcmp(leader->pmu_name, evsel->pmu_name)) {
1732                         is_leader = false;
1733                         continue;
1734                 }
1735
1736                 /* Store the leader event for each PMU */
1737                 leaders[nr_pmu++] = (uintptr_t) evsel;
1738         }
1739
1740         /* only one event alias */
1741         if (nr_pmu == total_members) {
1742                 parse_state->nr_groups--;
1743                 goto handled;
1744         }
1745
1746         /*
1747          * An uncore event alias is a joint name which means the same event
1748          * runs on all PMUs of a block.
1749          * Perf doesn't support mixed events from different PMUs in the same
1750          * group. The big group has to be split into multiple small groups
1751          * which only include the events from the same PMU.
1752          *
1753          * Here the uncore event aliases must be from the same uncore block.
1754          * The number of PMUs must be same for each alias. The number of new
1755          * small groups equals to the number of PMUs.
1756          * Setting the leader event for corresponding members in each group.
1757          */
1758         i = 0;
1759         __evlist__for_each_entry(list, evsel) {
1760                 if (i >= nr_pmu)
1761                         i = 0;
1762                 evsel->leader = (struct evsel *) leaders[i++];
1763         }
1764
1765         /* The number of members and group name are same for each group */
1766         for (i = 0; i < nr_pmu; i++) {
1767                 evsel = (struct evsel *) leaders[i];
1768                 evsel->core.nr_members = total_members / nr_pmu;
1769                 evsel->group_name = name ? strdup(name) : NULL;
1770         }
1771
1772         /* Take the new small groups into account */
1773         parse_state->nr_groups += nr_pmu - 1;
1774
1775 handled:
1776         ret = 1;
1777 out:
1778         free(leaders);
1779         return ret;
1780 }
1781
1782 void parse_events__set_leader(char *name, struct list_head *list,
1783                               struct parse_events_state *parse_state)
1784 {
1785         struct evsel *leader;
1786
1787         if (list_empty(list)) {
1788                 WARN_ONCE(true, "WARNING: failed to set leader: empty list");
1789                 return;
1790         }
1791
1792         if (parse_events__set_leader_for_uncore_aliase(name, list, parse_state))
1793                 return;
1794
1795         __evlist__set_leader(list);
1796         leader = list_entry(list->next, struct evsel, core.node);
1797         leader->group_name = name ? strdup(name) : NULL;
1798 }
1799
1800 /* list_event is assumed to point to malloc'ed memory */
1801 void parse_events_update_lists(struct list_head *list_event,
1802                                struct list_head *list_all)
1803 {
1804         /*
1805          * Called for single event definition. Update the
1806          * 'all event' list, and reinit the 'single event'
1807          * list, for next event definition.
1808          */
1809         list_splice_tail(list_event, list_all);
1810         free(list_event);
1811 }
1812
1813 struct event_modifier {
1814         int eu;
1815         int ek;
1816         int eh;
1817         int eH;
1818         int eG;
1819         int eI;
1820         int precise;
1821         int precise_max;
1822         int exclude_GH;
1823         int sample_read;
1824         int pinned;
1825         int weak;
1826         int exclusive;
1827         int bpf_counter;
1828 };
1829
1830 static int get_event_modifier(struct event_modifier *mod, char *str,
1831                                struct evsel *evsel)
1832 {
1833         int eu = evsel ? evsel->core.attr.exclude_user : 0;
1834         int ek = evsel ? evsel->core.attr.exclude_kernel : 0;
1835         int eh = evsel ? evsel->core.attr.exclude_hv : 0;
1836         int eH = evsel ? evsel->core.attr.exclude_host : 0;
1837         int eG = evsel ? evsel->core.attr.exclude_guest : 0;
1838         int eI = evsel ? evsel->core.attr.exclude_idle : 0;
1839         int precise = evsel ? evsel->core.attr.precise_ip : 0;
1840         int precise_max = 0;
1841         int sample_read = 0;
1842         int pinned = evsel ? evsel->core.attr.pinned : 0;
1843         int exclusive = evsel ? evsel->core.attr.exclusive : 0;
1844
1845         int exclude = eu | ek | eh;
1846         int exclude_GH = evsel ? evsel->exclude_GH : 0;
1847         int weak = 0;
1848         int bpf_counter = 0;
1849
1850         memset(mod, 0, sizeof(*mod));
1851
1852         while (*str) {
1853                 if (*str == 'u') {
1854                         if (!exclude)
1855                                 exclude = eu = ek = eh = 1;
1856                         if (!exclude_GH && !perf_guest)
1857                                 eG = 1;
1858                         eu = 0;
1859                 } else if (*str == 'k') {
1860                         if (!exclude)
1861                                 exclude = eu = ek = eh = 1;
1862                         ek = 0;
1863                 } else if (*str == 'h') {
1864                         if (!exclude)
1865                                 exclude = eu = ek = eh = 1;
1866                         eh = 0;
1867                 } else if (*str == 'G') {
1868                         if (!exclude_GH)
1869                                 exclude_GH = eG = eH = 1;
1870                         eG = 0;
1871                 } else if (*str == 'H') {
1872                         if (!exclude_GH)
1873                                 exclude_GH = eG = eH = 1;
1874                         eH = 0;
1875                 } else if (*str == 'I') {
1876                         eI = 1;
1877                 } else if (*str == 'p') {
1878                         precise++;
1879                         /* use of precise requires exclude_guest */
1880                         if (!exclude_GH)
1881                                 eG = 1;
1882                 } else if (*str == 'P') {
1883                         precise_max = 1;
1884                 } else if (*str == 'S') {
1885                         sample_read = 1;
1886                 } else if (*str == 'D') {
1887                         pinned = 1;
1888                 } else if (*str == 'e') {
1889                         exclusive = 1;
1890                 } else if (*str == 'W') {
1891                         weak = 1;
1892                 } else if (*str == 'b') {
1893                         bpf_counter = 1;
1894                 } else
1895                         break;
1896
1897                 ++str;
1898         }
1899
1900         /*
1901          * precise ip:
1902          *
1903          *  0 - SAMPLE_IP can have arbitrary skid
1904          *  1 - SAMPLE_IP must have constant skid
1905          *  2 - SAMPLE_IP requested to have 0 skid
1906          *  3 - SAMPLE_IP must have 0 skid
1907          *
1908          *  See also PERF_RECORD_MISC_EXACT_IP
1909          */
1910         if (precise > 3)
1911                 return -EINVAL;
1912
1913         mod->eu = eu;
1914         mod->ek = ek;
1915         mod->eh = eh;
1916         mod->eH = eH;
1917         mod->eG = eG;
1918         mod->eI = eI;
1919         mod->precise = precise;
1920         mod->precise_max = precise_max;
1921         mod->exclude_GH = exclude_GH;
1922         mod->sample_read = sample_read;
1923         mod->pinned = pinned;
1924         mod->weak = weak;
1925         mod->bpf_counter = bpf_counter;
1926         mod->exclusive = exclusive;
1927
1928         return 0;
1929 }
1930
1931 /*
1932  * Basic modifier sanity check to validate it contains only one
1933  * instance of any modifier (apart from 'p') present.
1934  */
1935 static int check_modifier(char *str)
1936 {
1937         char *p = str;
1938
1939         /* The sizeof includes 0 byte as well. */
1940         if (strlen(str) > (sizeof("ukhGHpppPSDIWeb") - 1))
1941                 return -1;
1942
1943         while (*p) {
1944                 if (*p != 'p' && strchr(p + 1, *p))
1945                         return -1;
1946                 p++;
1947         }
1948
1949         return 0;
1950 }
1951
1952 int parse_events__modifier_event(struct list_head *list, char *str, bool add)
1953 {
1954         struct evsel *evsel;
1955         struct event_modifier mod;
1956
1957         if (str == NULL)
1958                 return 0;
1959
1960         if (check_modifier(str))
1961                 return -EINVAL;
1962
1963         if (!add && get_event_modifier(&mod, str, NULL))
1964                 return -EINVAL;
1965
1966         __evlist__for_each_entry(list, evsel) {
1967                 if (add && get_event_modifier(&mod, str, evsel))
1968                         return -EINVAL;
1969
1970                 evsel->core.attr.exclude_user   = mod.eu;
1971                 evsel->core.attr.exclude_kernel = mod.ek;
1972                 evsel->core.attr.exclude_hv     = mod.eh;
1973                 evsel->core.attr.precise_ip     = mod.precise;
1974                 evsel->core.attr.exclude_host   = mod.eH;
1975                 evsel->core.attr.exclude_guest  = mod.eG;
1976                 evsel->core.attr.exclude_idle   = mod.eI;
1977                 evsel->exclude_GH          = mod.exclude_GH;
1978                 evsel->sample_read         = mod.sample_read;
1979                 evsel->precise_max         = mod.precise_max;
1980                 evsel->weak_group          = mod.weak;
1981                 evsel->bpf_counter         = mod.bpf_counter;
1982
1983                 if (evsel__is_group_leader(evsel)) {
1984                         evsel->core.attr.pinned = mod.pinned;
1985                         evsel->core.attr.exclusive = mod.exclusive;
1986                 }
1987         }
1988
1989         return 0;
1990 }
1991
1992 int parse_events_name(struct list_head *list, char *name)
1993 {
1994         struct evsel *evsel;
1995
1996         __evlist__for_each_entry(list, evsel) {
1997                 if (!evsel->name)
1998                         evsel->name = strdup(name);
1999         }
2000
2001         return 0;
2002 }
2003
2004 static int
2005 comp_pmu(const void *p1, const void *p2)
2006 {
2007         struct perf_pmu_event_symbol *pmu1 = (struct perf_pmu_event_symbol *) p1;
2008         struct perf_pmu_event_symbol *pmu2 = (struct perf_pmu_event_symbol *) p2;
2009
2010         return strcasecmp(pmu1->symbol, pmu2->symbol);
2011 }
2012
2013 static void perf_pmu__parse_cleanup(void)
2014 {
2015         if (perf_pmu_events_list_num > 0) {
2016                 struct perf_pmu_event_symbol *p;
2017                 int i;
2018
2019                 for (i = 0; i < perf_pmu_events_list_num; i++) {
2020                         p = perf_pmu_events_list + i;
2021                         zfree(&p->symbol);
2022                 }
2023                 zfree(&perf_pmu_events_list);
2024                 perf_pmu_events_list_num = 0;
2025         }
2026 }
2027
2028 #define SET_SYMBOL(str, stype)          \
2029 do {                                    \
2030         p->symbol = str;                \
2031         if (!p->symbol)                 \
2032                 goto err;               \
2033         p->type = stype;                \
2034 } while (0)
2035
2036 /*
2037  * Read the pmu events list from sysfs
2038  * Save it into perf_pmu_events_list
2039  */
2040 static void perf_pmu__parse_init(void)
2041 {
2042
2043         struct perf_pmu *pmu = NULL;
2044         struct perf_pmu_alias *alias;
2045         int len = 0;
2046
2047         pmu = NULL;
2048         while ((pmu = perf_pmu__scan(pmu)) != NULL) {
2049                 list_for_each_entry(alias, &pmu->aliases, list) {
2050                         if (strchr(alias->name, '-'))
2051                                 len++;
2052                         len++;
2053                 }
2054         }
2055
2056         if (len == 0) {
2057                 perf_pmu_events_list_num = -1;
2058                 return;
2059         }
2060         perf_pmu_events_list = malloc(sizeof(struct perf_pmu_event_symbol) * len);
2061         if (!perf_pmu_events_list)
2062                 return;
2063         perf_pmu_events_list_num = len;
2064
2065         len = 0;
2066         pmu = NULL;
2067         while ((pmu = perf_pmu__scan(pmu)) != NULL) {
2068                 list_for_each_entry(alias, &pmu->aliases, list) {
2069                         struct perf_pmu_event_symbol *p = perf_pmu_events_list + len;
2070                         char *tmp = strchr(alias->name, '-');
2071
2072                         if (tmp != NULL) {
2073                                 SET_SYMBOL(strndup(alias->name, tmp - alias->name),
2074                                                 PMU_EVENT_SYMBOL_PREFIX);
2075                                 p++;
2076                                 SET_SYMBOL(strdup(++tmp), PMU_EVENT_SYMBOL_SUFFIX);
2077                                 len += 2;
2078                         } else {
2079                                 SET_SYMBOL(strdup(alias->name), PMU_EVENT_SYMBOL);
2080                                 len++;
2081                         }
2082                 }
2083         }
2084         qsort(perf_pmu_events_list, len,
2085                 sizeof(struct perf_pmu_event_symbol), comp_pmu);
2086
2087         return;
2088 err:
2089         perf_pmu__parse_cleanup();
2090 }
2091
2092 /*
2093  * This function injects special term in
2094  * perf_pmu_events_list so the test code
2095  * can check on this functionality.
2096  */
2097 int perf_pmu__test_parse_init(void)
2098 {
2099         struct perf_pmu_event_symbol *list;
2100
2101         list = malloc(sizeof(*list) * 1);
2102         if (!list)
2103                 return -ENOMEM;
2104
2105         list->type   = PMU_EVENT_SYMBOL;
2106         list->symbol = strdup("read");
2107
2108         if (!list->symbol) {
2109                 free(list);
2110                 return -ENOMEM;
2111         }
2112
2113         perf_pmu_events_list = list;
2114         perf_pmu_events_list_num = 1;
2115         return 0;
2116 }
2117
2118 enum perf_pmu_event_symbol_type
2119 perf_pmu__parse_check(const char *name)
2120 {
2121         struct perf_pmu_event_symbol p, *r;
2122
2123         /* scan kernel pmu events from sysfs if needed */
2124         if (perf_pmu_events_list_num == 0)
2125                 perf_pmu__parse_init();
2126         /*
2127          * name "cpu" could be prefix of cpu-cycles or cpu// events.
2128          * cpu-cycles has been handled by hardcode.
2129          * So it must be cpu// events, not kernel pmu event.
2130          */
2131         if ((perf_pmu_events_list_num <= 0) || !strcmp(name, "cpu"))
2132                 return PMU_EVENT_SYMBOL_ERR;
2133
2134         p.symbol = strdup(name);
2135         r = bsearch(&p, perf_pmu_events_list,
2136                         (size_t) perf_pmu_events_list_num,
2137                         sizeof(struct perf_pmu_event_symbol), comp_pmu);
2138         zfree(&p.symbol);
2139         return r ? r->type : PMU_EVENT_SYMBOL_ERR;
2140 }
2141
2142 static int parse_events__scanner(const char *str,
2143                                  struct parse_events_state *parse_state)
2144 {
2145         YY_BUFFER_STATE buffer;
2146         void *scanner;
2147         int ret;
2148
2149         ret = parse_events_lex_init_extra(parse_state, &scanner);
2150         if (ret)
2151                 return ret;
2152
2153         buffer = parse_events__scan_string(str, scanner);
2154
2155 #ifdef PARSER_DEBUG
2156         parse_events_debug = 1;
2157         parse_events_set_debug(1, scanner);
2158 #endif
2159         ret = parse_events_parse(parse_state, scanner);
2160
2161         parse_events__flush_buffer(buffer, scanner);
2162         parse_events__delete_buffer(buffer, scanner);
2163         parse_events_lex_destroy(scanner);
2164         return ret;
2165 }
2166
2167 /*
2168  * parse event config string, return a list of event terms.
2169  */
2170 int parse_events_terms(struct list_head *terms, const char *str)
2171 {
2172         struct parse_events_state parse_state = {
2173                 .terms  = NULL,
2174                 .stoken = PE_START_TERMS,
2175         };
2176         int ret;
2177
2178         ret = parse_events__scanner(str, &parse_state);
2179         perf_pmu__parse_cleanup();
2180
2181         if (!ret) {
2182                 list_splice(parse_state.terms, terms);
2183                 zfree(&parse_state.terms);
2184                 return 0;
2185         }
2186
2187         parse_events_terms__delete(parse_state.terms);
2188         return ret;
2189 }
2190
2191 int __parse_events(struct evlist *evlist, const char *str,
2192                    struct parse_events_error *err, struct perf_pmu *fake_pmu)
2193 {
2194         struct parse_events_state parse_state = {
2195                 .list     = LIST_HEAD_INIT(parse_state.list),
2196                 .idx      = evlist->core.nr_entries,
2197                 .error    = err,
2198                 .evlist   = evlist,
2199                 .stoken   = PE_START_EVENTS,
2200                 .fake_pmu = fake_pmu,
2201         };
2202         int ret;
2203
2204         ret = parse_events__scanner(str, &parse_state);
2205         perf_pmu__parse_cleanup();
2206
2207         if (!ret && list_empty(&parse_state.list)) {
2208                 WARN_ONCE(true, "WARNING: event parser found nothing\n");
2209                 return -1;
2210         }
2211
2212         /*
2213          * Add list to the evlist even with errors to allow callers to clean up.
2214          */
2215         evlist__splice_list_tail(evlist, &parse_state.list);
2216
2217         if (!ret) {
2218                 struct evsel *last;
2219
2220                 evlist->nr_groups += parse_state.nr_groups;
2221                 last = evlist__last(evlist);
2222                 last->cmdline_group_boundary = true;
2223
2224                 return 0;
2225         }
2226
2227         /*
2228          * There are 2 users - builtin-record and builtin-test objects.
2229          * Both call evlist__delete in case of error, so we dont
2230          * need to bother.
2231          */
2232         return ret;
2233 }
2234
2235 #define MAX_WIDTH 1000
2236 static int get_term_width(void)
2237 {
2238         struct winsize ws;
2239
2240         get_term_dimensions(&ws);
2241         return ws.ws_col > MAX_WIDTH ? MAX_WIDTH : ws.ws_col;
2242 }
2243
2244 static void __parse_events_print_error(int err_idx, const char *err_str,
2245                                 const char *err_help, const char *event)
2246 {
2247         const char *str = "invalid or unsupported event: ";
2248         char _buf[MAX_WIDTH];
2249         char *buf = (char *) event;
2250         int idx = 0;
2251         if (err_str) {
2252                 /* -2 for extra '' in the final fprintf */
2253                 int width       = get_term_width() - 2;
2254                 int len_event   = strlen(event);
2255                 int len_str, max_len, cut = 0;
2256
2257                 /*
2258                  * Maximum error index indent, we will cut
2259                  * the event string if it's bigger.
2260                  */
2261                 int max_err_idx = 13;
2262
2263                 /*
2264                  * Let's be specific with the message when
2265                  * we have the precise error.
2266                  */
2267                 str     = "event syntax error: ";
2268                 len_str = strlen(str);
2269                 max_len = width - len_str;
2270
2271                 buf = _buf;
2272
2273                 /* We're cutting from the beginning. */
2274                 if (err_idx > max_err_idx)
2275                         cut = err_idx - max_err_idx;
2276
2277                 strncpy(buf, event + cut, max_len);
2278
2279                 /* Mark cut parts with '..' on both sides. */
2280                 if (cut)
2281                         buf[0] = buf[1] = '.';
2282
2283                 if ((len_event - cut) > max_len) {
2284                         buf[max_len - 1] = buf[max_len - 2] = '.';
2285                         buf[max_len] = 0;
2286                 }
2287
2288                 idx = len_str + err_idx - cut;
2289         }
2290
2291         fprintf(stderr, "%s'%s'\n", str, buf);
2292         if (idx) {
2293                 fprintf(stderr, "%*s\\___ %s\n", idx + 1, "", err_str);
2294                 if (err_help)
2295                         fprintf(stderr, "\n%s\n", err_help);
2296         }
2297 }
2298
2299 void parse_events_print_error(struct parse_events_error *err,
2300                               const char *event)
2301 {
2302         if (!err->num_errors)
2303                 return;
2304
2305         __parse_events_print_error(err->idx, err->str, err->help, event);
2306         zfree(&err->str);
2307         zfree(&err->help);
2308
2309         if (err->num_errors > 1) {
2310                 fputs("\nInitial error:\n", stderr);
2311                 __parse_events_print_error(err->first_idx, err->first_str,
2312                                         err->first_help, event);
2313                 zfree(&err->first_str);
2314                 zfree(&err->first_help);
2315         }
2316 }
2317
2318 #undef MAX_WIDTH
2319
2320 int parse_events_option(const struct option *opt, const char *str,
2321                         int unset __maybe_unused)
2322 {
2323         struct evlist *evlist = *(struct evlist **)opt->value;
2324         struct parse_events_error err;
2325         int ret;
2326
2327         bzero(&err, sizeof(err));
2328         ret = parse_events(evlist, str, &err);
2329
2330         if (ret) {
2331                 parse_events_print_error(&err, str);
2332                 fprintf(stderr, "Run 'perf list' for a list of valid events\n");
2333         }
2334
2335         return ret;
2336 }
2337
2338 int parse_events_option_new_evlist(const struct option *opt, const char *str, int unset)
2339 {
2340         struct evlist **evlistp = opt->value;
2341         int ret;
2342
2343         if (*evlistp == NULL) {
2344                 *evlistp = evlist__new();
2345
2346                 if (*evlistp == NULL) {
2347                         fprintf(stderr, "Not enough memory to create evlist\n");
2348                         return -1;
2349                 }
2350         }
2351
2352         ret = parse_events_option(opt, str, unset);
2353         if (ret) {
2354                 evlist__delete(*evlistp);
2355                 *evlistp = NULL;
2356         }
2357
2358         return ret;
2359 }
2360
2361 static int
2362 foreach_evsel_in_last_glob(struct evlist *evlist,
2363                            int (*func)(struct evsel *evsel,
2364                                        const void *arg),
2365                            const void *arg)
2366 {
2367         struct evsel *last = NULL;
2368         int err;
2369
2370         /*
2371          * Don't return when list_empty, give func a chance to report
2372          * error when it found last == NULL.
2373          *
2374          * So no need to WARN here, let *func do this.
2375          */
2376         if (evlist->core.nr_entries > 0)
2377                 last = evlist__last(evlist);
2378
2379         do {
2380                 err = (*func)(last, arg);
2381                 if (err)
2382                         return -1;
2383                 if (!last)
2384                         return 0;
2385
2386                 if (last->core.node.prev == &evlist->core.entries)
2387                         return 0;
2388                 last = list_entry(last->core.node.prev, struct evsel, core.node);
2389         } while (!last->cmdline_group_boundary);
2390
2391         return 0;
2392 }
2393
2394 static int set_filter(struct evsel *evsel, const void *arg)
2395 {
2396         const char *str = arg;
2397         bool found = false;
2398         int nr_addr_filters = 0;
2399         struct perf_pmu *pmu = NULL;
2400
2401         if (evsel == NULL) {
2402                 fprintf(stderr,
2403                         "--filter option should follow a -e tracepoint or HW tracer option\n");
2404                 return -1;
2405         }
2406
2407         if (evsel->core.attr.type == PERF_TYPE_TRACEPOINT) {
2408                 if (evsel__append_tp_filter(evsel, str) < 0) {
2409                         fprintf(stderr,
2410                                 "not enough memory to hold filter string\n");
2411                         return -1;
2412                 }
2413
2414                 return 0;
2415         }
2416
2417         while ((pmu = perf_pmu__scan(pmu)) != NULL)
2418                 if (pmu->type == evsel->core.attr.type) {
2419                         found = true;
2420                         break;
2421                 }
2422
2423         if (found)
2424                 perf_pmu__scan_file(pmu, "nr_addr_filters",
2425                                     "%d", &nr_addr_filters);
2426
2427         if (!nr_addr_filters) {
2428                 fprintf(stderr,
2429                         "This CPU does not support address filtering\n");
2430                 return -1;
2431         }
2432
2433         if (evsel__append_addr_filter(evsel, str) < 0) {
2434                 fprintf(stderr,
2435                         "not enough memory to hold filter string\n");
2436                 return -1;
2437         }
2438
2439         return 0;
2440 }
2441
2442 int parse_filter(const struct option *opt, const char *str,
2443                  int unset __maybe_unused)
2444 {
2445         struct evlist *evlist = *(struct evlist **)opt->value;
2446
2447         return foreach_evsel_in_last_glob(evlist, set_filter,
2448                                           (const void *)str);
2449 }
2450
2451 static int add_exclude_perf_filter(struct evsel *evsel,
2452                                    const void *arg __maybe_unused)
2453 {
2454         char new_filter[64];
2455
2456         if (evsel == NULL || evsel->core.attr.type != PERF_TYPE_TRACEPOINT) {
2457                 fprintf(stderr,
2458                         "--exclude-perf option should follow a -e tracepoint option\n");
2459                 return -1;
2460         }
2461
2462         snprintf(new_filter, sizeof(new_filter), "common_pid != %d", getpid());
2463
2464         if (evsel__append_tp_filter(evsel, new_filter) < 0) {
2465                 fprintf(stderr,
2466                         "not enough memory to hold filter string\n");
2467                 return -1;
2468         }
2469
2470         return 0;
2471 }
2472
2473 int exclude_perf(const struct option *opt,
2474                  const char *arg __maybe_unused,
2475                  int unset __maybe_unused)
2476 {
2477         struct evlist *evlist = *(struct evlist **)opt->value;
2478
2479         return foreach_evsel_in_last_glob(evlist, add_exclude_perf_filter,
2480                                           NULL);
2481 }
2482
2483 static const char * const event_type_descriptors[] = {
2484         "Hardware event",
2485         "Software event",
2486         "Tracepoint event",
2487         "Hardware cache event",
2488         "Raw hardware event descriptor",
2489         "Hardware breakpoint",
2490 };
2491
2492 static int cmp_string(const void *a, const void *b)
2493 {
2494         const char * const *as = a;
2495         const char * const *bs = b;
2496
2497         return strcmp(*as, *bs);
2498 }
2499
2500 /*
2501  * Print the events from <debugfs_mount_point>/tracing/events
2502  */
2503
2504 void print_tracepoint_events(const char *subsys_glob, const char *event_glob,
2505                              bool name_only)
2506 {
2507         DIR *sys_dir, *evt_dir;
2508         struct dirent *sys_dirent, *evt_dirent;
2509         char evt_path[MAXPATHLEN];
2510         char *dir_path;
2511         char **evt_list = NULL;
2512         unsigned int evt_i = 0, evt_num = 0;
2513         bool evt_num_known = false;
2514
2515 restart:
2516         sys_dir = tracing_events__opendir();
2517         if (!sys_dir)
2518                 return;
2519
2520         if (evt_num_known) {
2521                 evt_list = zalloc(sizeof(char *) * evt_num);
2522                 if (!evt_list)
2523                         goto out_close_sys_dir;
2524         }
2525
2526         for_each_subsystem(sys_dir, sys_dirent) {
2527                 if (subsys_glob != NULL &&
2528                     !strglobmatch(sys_dirent->d_name, subsys_glob))
2529                         continue;
2530
2531                 dir_path = get_events_file(sys_dirent->d_name);
2532                 if (!dir_path)
2533                         continue;
2534                 evt_dir = opendir(dir_path);
2535                 if (!evt_dir)
2536                         goto next;
2537
2538                 for_each_event(dir_path, evt_dir, evt_dirent) {
2539                         if (event_glob != NULL &&
2540                             !strglobmatch(evt_dirent->d_name, event_glob))
2541                                 continue;
2542
2543                         if (!evt_num_known) {
2544                                 evt_num++;
2545                                 continue;
2546                         }
2547
2548                         snprintf(evt_path, MAXPATHLEN, "%s:%s",
2549                                  sys_dirent->d_name, evt_dirent->d_name);
2550
2551                         evt_list[evt_i] = strdup(evt_path);
2552                         if (evt_list[evt_i] == NULL) {
2553                                 put_events_file(dir_path);
2554                                 goto out_close_evt_dir;
2555                         }
2556                         evt_i++;
2557                 }
2558                 closedir(evt_dir);
2559 next:
2560                 put_events_file(dir_path);
2561         }
2562         closedir(sys_dir);
2563
2564         if (!evt_num_known) {
2565                 evt_num_known = true;
2566                 goto restart;
2567         }
2568         qsort(evt_list, evt_num, sizeof(char *), cmp_string);
2569         evt_i = 0;
2570         while (evt_i < evt_num) {
2571                 if (name_only) {
2572                         printf("%s ", evt_list[evt_i++]);
2573                         continue;
2574                 }
2575                 printf("  %-50s [%s]\n", evt_list[evt_i++],
2576                                 event_type_descriptors[PERF_TYPE_TRACEPOINT]);
2577         }
2578         if (evt_num && pager_in_use())
2579                 printf("\n");
2580
2581 out_free:
2582         evt_num = evt_i;
2583         for (evt_i = 0; evt_i < evt_num; evt_i++)
2584                 zfree(&evt_list[evt_i]);
2585         zfree(&evt_list);
2586         return;
2587
2588 out_close_evt_dir:
2589         closedir(evt_dir);
2590 out_close_sys_dir:
2591         closedir(sys_dir);
2592
2593         printf("FATAL: not enough memory to print %s\n",
2594                         event_type_descriptors[PERF_TYPE_TRACEPOINT]);
2595         if (evt_list)
2596                 goto out_free;
2597 }
2598
2599 /*
2600  * Check whether event is in <debugfs_mount_point>/tracing/events
2601  */
2602
2603 int is_valid_tracepoint(const char *event_string)
2604 {
2605         DIR *sys_dir, *evt_dir;
2606         struct dirent *sys_dirent, *evt_dirent;
2607         char evt_path[MAXPATHLEN];
2608         char *dir_path;
2609
2610         sys_dir = tracing_events__opendir();
2611         if (!sys_dir)
2612                 return 0;
2613
2614         for_each_subsystem(sys_dir, sys_dirent) {
2615                 dir_path = get_events_file(sys_dirent->d_name);
2616                 if (!dir_path)
2617                         continue;
2618                 evt_dir = opendir(dir_path);
2619                 if (!evt_dir)
2620                         goto next;
2621
2622                 for_each_event(dir_path, evt_dir, evt_dirent) {
2623                         snprintf(evt_path, MAXPATHLEN, "%s:%s",
2624                                  sys_dirent->d_name, evt_dirent->d_name);
2625                         if (!strcmp(evt_path, event_string)) {
2626                                 closedir(evt_dir);
2627                                 closedir(sys_dir);
2628                                 return 1;
2629                         }
2630                 }
2631                 closedir(evt_dir);
2632 next:
2633                 put_events_file(dir_path);
2634         }
2635         closedir(sys_dir);
2636         return 0;
2637 }
2638
2639 static bool is_event_supported(u8 type, unsigned config)
2640 {
2641         bool ret = true;
2642         int open_return;
2643         struct evsel *evsel;
2644         struct perf_event_attr attr = {
2645                 .type = type,
2646                 .config = config,
2647                 .disabled = 1,
2648         };
2649         struct perf_thread_map *tmap = thread_map__new_by_tid(0);
2650
2651         if (tmap == NULL)
2652                 return false;
2653
2654         evsel = evsel__new(&attr);
2655         if (evsel) {
2656                 open_return = evsel__open(evsel, NULL, tmap);
2657                 ret = open_return >= 0;
2658
2659                 if (open_return == -EACCES) {
2660                         /*
2661                          * This happens if the paranoid value
2662                          * /proc/sys/kernel/perf_event_paranoid is set to 2
2663                          * Re-run with exclude_kernel set; we don't do that
2664                          * by default as some ARM machines do not support it.
2665                          *
2666                          */
2667                         evsel->core.attr.exclude_kernel = 1;
2668                         ret = evsel__open(evsel, NULL, tmap) >= 0;
2669                 }
2670                 evsel__delete(evsel);
2671         }
2672
2673         perf_thread_map__put(tmap);
2674         return ret;
2675 }
2676
2677 void print_sdt_events(const char *subsys_glob, const char *event_glob,
2678                       bool name_only)
2679 {
2680         struct probe_cache *pcache;
2681         struct probe_cache_entry *ent;
2682         struct strlist *bidlist, *sdtlist;
2683         struct strlist_config cfg = {.dont_dupstr = true};
2684         struct str_node *nd, *nd2;
2685         char *buf, *path, *ptr = NULL;
2686         bool show_detail = false;
2687         int ret;
2688
2689         sdtlist = strlist__new(NULL, &cfg);
2690         if (!sdtlist) {
2691                 pr_debug("Failed to allocate new strlist for SDT\n");
2692                 return;
2693         }
2694         bidlist = build_id_cache__list_all(true);
2695         if (!bidlist) {
2696                 pr_debug("Failed to get buildids: %d\n", errno);
2697                 return;
2698         }
2699         strlist__for_each_entry(nd, bidlist) {
2700                 pcache = probe_cache__new(nd->s, NULL);
2701                 if (!pcache)
2702                         continue;
2703                 list_for_each_entry(ent, &pcache->entries, node) {
2704                         if (!ent->sdt)
2705                                 continue;
2706                         if (subsys_glob &&
2707                             !strglobmatch(ent->pev.group, subsys_glob))
2708                                 continue;
2709                         if (event_glob &&
2710                             !strglobmatch(ent->pev.event, event_glob))
2711                                 continue;
2712                         ret = asprintf(&buf, "%s:%s@%s", ent->pev.group,
2713                                         ent->pev.event, nd->s);
2714                         if (ret > 0)
2715                                 strlist__add(sdtlist, buf);
2716                 }
2717                 probe_cache__delete(pcache);
2718         }
2719         strlist__delete(bidlist);
2720
2721         strlist__for_each_entry(nd, sdtlist) {
2722                 buf = strchr(nd->s, '@');
2723                 if (buf)
2724                         *(buf++) = '\0';
2725                 if (name_only) {
2726                         printf("%s ", nd->s);
2727                         continue;
2728                 }
2729                 nd2 = strlist__next(nd);
2730                 if (nd2) {
2731                         ptr = strchr(nd2->s, '@');
2732                         if (ptr)
2733                                 *ptr = '\0';
2734                         if (strcmp(nd->s, nd2->s) == 0)
2735                                 show_detail = true;
2736                 }
2737                 if (show_detail) {
2738                         path = build_id_cache__origname(buf);
2739                         ret = asprintf(&buf, "%s@%s(%.12s)", nd->s, path, buf);
2740                         if (ret > 0) {
2741                                 printf("  %-50s [%s]\n", buf, "SDT event");
2742                                 free(buf);
2743                         }
2744                         free(path);
2745                 } else
2746                         printf("  %-50s [%s]\n", nd->s, "SDT event");
2747                 if (nd2) {
2748                         if (strcmp(nd->s, nd2->s) != 0)
2749                                 show_detail = false;
2750                         if (ptr)
2751                                 *ptr = '@';
2752                 }
2753         }
2754         strlist__delete(sdtlist);
2755 }
2756
2757 int print_hwcache_events(const char *event_glob, bool name_only)
2758 {
2759         unsigned int type, op, i, evt_i = 0, evt_num = 0;
2760         char name[64];
2761         char **evt_list = NULL;
2762         bool evt_num_known = false;
2763
2764 restart:
2765         if (evt_num_known) {
2766                 evt_list = zalloc(sizeof(char *) * evt_num);
2767                 if (!evt_list)
2768                         goto out_enomem;
2769         }
2770
2771         for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) {
2772                 for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) {
2773                         /* skip invalid cache type */
2774                         if (!evsel__is_cache_op_valid(type, op))
2775                                 continue;
2776
2777                         for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) {
2778                                 __evsel__hw_cache_type_op_res_name(type, op, i, name, sizeof(name));
2779                                 if (event_glob != NULL && !strglobmatch(name, event_glob))
2780                                         continue;
2781
2782                                 if (!is_event_supported(PERF_TYPE_HW_CACHE,
2783                                                         type | (op << 8) | (i << 16)))
2784                                         continue;
2785
2786                                 if (!evt_num_known) {
2787                                         evt_num++;
2788                                         continue;
2789                                 }
2790
2791                                 evt_list[evt_i] = strdup(name);
2792                                 if (evt_list[evt_i] == NULL)
2793                                         goto out_enomem;
2794                                 evt_i++;
2795                         }
2796                 }
2797         }
2798
2799         if (!evt_num_known) {
2800                 evt_num_known = true;
2801                 goto restart;
2802         }
2803         qsort(evt_list, evt_num, sizeof(char *), cmp_string);
2804         evt_i = 0;
2805         while (evt_i < evt_num) {
2806                 if (name_only) {
2807                         printf("%s ", evt_list[evt_i++]);
2808                         continue;
2809                 }
2810                 printf("  %-50s [%s]\n", evt_list[evt_i++],
2811                                 event_type_descriptors[PERF_TYPE_HW_CACHE]);
2812         }
2813         if (evt_num && pager_in_use())
2814                 printf("\n");
2815
2816 out_free:
2817         evt_num = evt_i;
2818         for (evt_i = 0; evt_i < evt_num; evt_i++)
2819                 zfree(&evt_list[evt_i]);
2820         zfree(&evt_list);
2821         return evt_num;
2822
2823 out_enomem:
2824         printf("FATAL: not enough memory to print %s\n", event_type_descriptors[PERF_TYPE_HW_CACHE]);
2825         if (evt_list)
2826                 goto out_free;
2827         return evt_num;
2828 }
2829
2830 static void print_tool_event(const char *name, const char *event_glob,
2831                              bool name_only)
2832 {
2833         if (event_glob && !strglobmatch(name, event_glob))
2834                 return;
2835         if (name_only)
2836                 printf("%s ", name);
2837         else
2838                 printf("  %-50s [%s]\n", name, "Tool event");
2839
2840 }
2841
2842 void print_tool_events(const char *event_glob, bool name_only)
2843 {
2844         print_tool_event("duration_time", event_glob, name_only);
2845         if (pager_in_use())
2846                 printf("\n");
2847 }
2848
2849 void print_symbol_events(const char *event_glob, unsigned type,
2850                                 struct event_symbol *syms, unsigned max,
2851                                 bool name_only)
2852 {
2853         unsigned int i, evt_i = 0, evt_num = 0;
2854         char name[MAX_NAME_LEN];
2855         char **evt_list = NULL;
2856         bool evt_num_known = false;
2857
2858 restart:
2859         if (evt_num_known) {
2860                 evt_list = zalloc(sizeof(char *) * evt_num);
2861                 if (!evt_list)
2862                         goto out_enomem;
2863                 syms -= max;
2864         }
2865
2866         for (i = 0; i < max; i++, syms++) {
2867
2868                 if (event_glob != NULL && syms->symbol != NULL &&
2869                     !(strglobmatch(syms->symbol, event_glob) ||
2870                       (syms->alias && strglobmatch(syms->alias, event_glob))))
2871                         continue;
2872
2873                 if (!is_event_supported(type, i))
2874                         continue;
2875
2876                 if (!evt_num_known) {
2877                         evt_num++;
2878                         continue;
2879                 }
2880
2881                 if (!name_only && strlen(syms->alias))
2882                         snprintf(name, MAX_NAME_LEN, "%s OR %s", syms->symbol, syms->alias);
2883                 else
2884                         strlcpy(name, syms->symbol, MAX_NAME_LEN);
2885
2886                 evt_list[evt_i] = strdup(name);
2887                 if (evt_list[evt_i] == NULL)
2888                         goto out_enomem;
2889                 evt_i++;
2890         }
2891
2892         if (!evt_num_known) {
2893                 evt_num_known = true;
2894                 goto restart;
2895         }
2896         qsort(evt_list, evt_num, sizeof(char *), cmp_string);
2897         evt_i = 0;
2898         while (evt_i < evt_num) {
2899                 if (name_only) {
2900                         printf("%s ", evt_list[evt_i++]);
2901                         continue;
2902                 }
2903                 printf("  %-50s [%s]\n", evt_list[evt_i++], event_type_descriptors[type]);
2904         }
2905         if (evt_num && pager_in_use())
2906                 printf("\n");
2907
2908 out_free:
2909         evt_num = evt_i;
2910         for (evt_i = 0; evt_i < evt_num; evt_i++)
2911                 zfree(&evt_list[evt_i]);
2912         zfree(&evt_list);
2913         return;
2914
2915 out_enomem:
2916         printf("FATAL: not enough memory to print %s\n", event_type_descriptors[type]);
2917         if (evt_list)
2918                 goto out_free;
2919 }
2920
2921 /*
2922  * Print the help text for the event symbols:
2923  */
2924 void print_events(const char *event_glob, bool name_only, bool quiet_flag,
2925                         bool long_desc, bool details_flag, bool deprecated)
2926 {
2927         print_symbol_events(event_glob, PERF_TYPE_HARDWARE,
2928                             event_symbols_hw, PERF_COUNT_HW_MAX, name_only);
2929
2930         print_symbol_events(event_glob, PERF_TYPE_SOFTWARE,
2931                             event_symbols_sw, PERF_COUNT_SW_MAX, name_only);
2932         print_tool_events(event_glob, name_only);
2933
2934         print_hwcache_events(event_glob, name_only);
2935
2936         print_pmu_events(event_glob, name_only, quiet_flag, long_desc,
2937                         details_flag, deprecated);
2938
2939         if (event_glob != NULL)
2940                 return;
2941
2942         if (!name_only) {
2943                 printf("  %-50s [%s]\n",
2944                        "rNNN",
2945                        event_type_descriptors[PERF_TYPE_RAW]);
2946                 printf("  %-50s [%s]\n",
2947                        "cpu/t1=v1[,t2=v2,t3 ...]/modifier",
2948                        event_type_descriptors[PERF_TYPE_RAW]);
2949                 if (pager_in_use())
2950                         printf("   (see 'man perf-list' on how to encode it)\n\n");
2951
2952                 printf("  %-50s [%s]\n",
2953                        "mem:<addr>[/len][:access]",
2954                         event_type_descriptors[PERF_TYPE_BREAKPOINT]);
2955                 if (pager_in_use())
2956                         printf("\n");
2957         }
2958
2959         print_tracepoint_events(NULL, NULL, name_only);
2960
2961         print_sdt_events(NULL, NULL, name_only);
2962
2963         metricgroup__print(true, true, NULL, name_only, details_flag);
2964
2965         print_libpfm_events(name_only, long_desc);
2966 }
2967
2968 int parse_events__is_hardcoded_term(struct parse_events_term *term)
2969 {
2970         return term->type_term != PARSE_EVENTS__TERM_TYPE_USER;
2971 }
2972
2973 static int new_term(struct parse_events_term **_term,
2974                     struct parse_events_term *temp,
2975                     char *str, u64 num)
2976 {
2977         struct parse_events_term *term;
2978
2979         term = malloc(sizeof(*term));
2980         if (!term)
2981                 return -ENOMEM;
2982
2983         *term = *temp;
2984         INIT_LIST_HEAD(&term->list);
2985         term->weak = false;
2986
2987         switch (term->type_val) {
2988         case PARSE_EVENTS__TERM_TYPE_NUM:
2989                 term->val.num = num;
2990                 break;
2991         case PARSE_EVENTS__TERM_TYPE_STR:
2992                 term->val.str = str;
2993                 break;
2994         default:
2995                 free(term);
2996                 return -EINVAL;
2997         }
2998
2999         *_term = term;
3000         return 0;
3001 }
3002
3003 int parse_events_term__num(struct parse_events_term **term,
3004                            int type_term, char *config, u64 num,
3005                            bool no_value,
3006                            void *loc_term_, void *loc_val_)
3007 {
3008         YYLTYPE *loc_term = loc_term_;
3009         YYLTYPE *loc_val = loc_val_;
3010
3011         struct parse_events_term temp = {
3012                 .type_val  = PARSE_EVENTS__TERM_TYPE_NUM,
3013                 .type_term = type_term,
3014                 .config    = config,
3015                 .no_value  = no_value,
3016                 .err_term  = loc_term ? loc_term->first_column : 0,
3017                 .err_val   = loc_val  ? loc_val->first_column  : 0,
3018         };
3019
3020         return new_term(term, &temp, NULL, num);
3021 }
3022
3023 int parse_events_term__str(struct parse_events_term **term,
3024                            int type_term, char *config, char *str,
3025                            void *loc_term_, void *loc_val_)
3026 {
3027         YYLTYPE *loc_term = loc_term_;
3028         YYLTYPE *loc_val = loc_val_;
3029
3030         struct parse_events_term temp = {
3031                 .type_val  = PARSE_EVENTS__TERM_TYPE_STR,
3032                 .type_term = type_term,
3033                 .config    = config,
3034                 .err_term  = loc_term ? loc_term->first_column : 0,
3035                 .err_val   = loc_val  ? loc_val->first_column  : 0,
3036         };
3037
3038         return new_term(term, &temp, str, 0);
3039 }
3040
3041 int parse_events_term__sym_hw(struct parse_events_term **term,
3042                               char *config, unsigned idx)
3043 {
3044         struct event_symbol *sym;
3045         char *str;
3046         struct parse_events_term temp = {
3047                 .type_val  = PARSE_EVENTS__TERM_TYPE_STR,
3048                 .type_term = PARSE_EVENTS__TERM_TYPE_USER,
3049                 .config    = config,
3050         };
3051
3052         if (!temp.config) {
3053                 temp.config = strdup("event");
3054                 if (!temp.config)
3055                         return -ENOMEM;
3056         }
3057         BUG_ON(idx >= PERF_COUNT_HW_MAX);
3058         sym = &event_symbols_hw[idx];
3059
3060         str = strdup(sym->symbol);
3061         if (!str)
3062                 return -ENOMEM;
3063         return new_term(term, &temp, str, 0);
3064 }
3065
3066 int parse_events_term__clone(struct parse_events_term **new,
3067                              struct parse_events_term *term)
3068 {
3069         char *str;
3070         struct parse_events_term temp = {
3071                 .type_val  = term->type_val,
3072                 .type_term = term->type_term,
3073                 .config    = NULL,
3074                 .err_term  = term->err_term,
3075                 .err_val   = term->err_val,
3076         };
3077
3078         if (term->config) {
3079                 temp.config = strdup(term->config);
3080                 if (!temp.config)
3081                         return -ENOMEM;
3082         }
3083         if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM)
3084                 return new_term(new, &temp, NULL, term->val.num);
3085
3086         str = strdup(term->val.str);
3087         if (!str)
3088                 return -ENOMEM;
3089         return new_term(new, &temp, str, 0);
3090 }
3091
3092 void parse_events_term__delete(struct parse_events_term *term)
3093 {
3094         if (term->array.nr_ranges)
3095                 zfree(&term->array.ranges);
3096
3097         if (term->type_val != PARSE_EVENTS__TERM_TYPE_NUM)
3098                 zfree(&term->val.str);
3099
3100         zfree(&term->config);
3101         free(term);
3102 }
3103
3104 int parse_events_copy_term_list(struct list_head *old,
3105                                  struct list_head **new)
3106 {
3107         struct parse_events_term *term, *n;
3108         int ret;
3109
3110         if (!old) {
3111                 *new = NULL;
3112                 return 0;
3113         }
3114
3115         *new = malloc(sizeof(struct list_head));
3116         if (!*new)
3117                 return -ENOMEM;
3118         INIT_LIST_HEAD(*new);
3119
3120         list_for_each_entry (term, old, list) {
3121                 ret = parse_events_term__clone(&n, term);
3122                 if (ret)
3123                         return ret;
3124                 list_add_tail(&n->list, *new);
3125         }
3126         return 0;
3127 }
3128
3129 void parse_events_terms__purge(struct list_head *terms)
3130 {
3131         struct parse_events_term *term, *h;
3132
3133         list_for_each_entry_safe(term, h, terms, list) {
3134                 list_del_init(&term->list);
3135                 parse_events_term__delete(term);
3136         }
3137 }
3138
3139 void parse_events_terms__delete(struct list_head *terms)
3140 {
3141         if (!terms)
3142                 return;
3143         parse_events_terms__purge(terms);
3144         free(terms);
3145 }
3146
3147 void parse_events__clear_array(struct parse_events_array *a)
3148 {
3149         zfree(&a->ranges);
3150 }
3151
3152 void parse_events_evlist_error(struct parse_events_state *parse_state,
3153                                int idx, const char *str)
3154 {
3155         if (!parse_state->error)
3156                 return;
3157
3158         parse_events__handle_error(parse_state->error, idx, strdup(str), NULL);
3159 }
3160
3161 static void config_terms_list(char *buf, size_t buf_sz)
3162 {
3163         int i;
3164         bool first = true;
3165
3166         buf[0] = '\0';
3167         for (i = 0; i < __PARSE_EVENTS__TERM_TYPE_NR; i++) {
3168                 const char *name = config_term_names[i];
3169
3170                 if (!config_term_avail(i, NULL))
3171                         continue;
3172                 if (!name)
3173                         continue;
3174                 if (name[0] == '<')
3175                         continue;
3176
3177                 if (strlen(buf) + strlen(name) + 2 >= buf_sz)
3178                         return;
3179
3180                 if (!first)
3181                         strcat(buf, ",");
3182                 else
3183                         first = false;
3184                 strcat(buf, name);
3185         }
3186 }
3187
3188 /*
3189  * Return string contains valid config terms of an event.
3190  * @additional_terms: For terms such as PMU sysfs terms.
3191  */
3192 char *parse_events_formats_error_string(char *additional_terms)
3193 {
3194         char *str;
3195         /* "no-overwrite" is the longest name */
3196         char static_terms[__PARSE_EVENTS__TERM_TYPE_NR *
3197                           (sizeof("no-overwrite") - 1)];
3198
3199         config_terms_list(static_terms, sizeof(static_terms));
3200         /* valid terms */
3201         if (additional_terms) {
3202                 if (asprintf(&str, "valid terms: %s,%s",
3203                              additional_terms, static_terms) < 0)
3204                         goto fail;
3205         } else {
3206                 if (asprintf(&str, "valid terms: %s", static_terms) < 0)
3207                         goto fail;
3208         }
3209         return str;
3210
3211 fail:
3212         return NULL;
3213 }
3214
3215 struct evsel *parse_events__add_event_hybrid(struct list_head *list, int *idx,
3216                                              struct perf_event_attr *attr,
3217                                              char *name, struct perf_pmu *pmu,
3218                                              struct list_head *config_terms)
3219 {
3220         return __add_event(list, idx, attr, true, name, pmu,
3221                            config_terms, false, NULL);
3222 }