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