tools/perf/util/parse-events.c

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