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/list_sort.h>
   5 #include <linux/zalloc.h>
   6 #include <dirent.h>
   7 #include <errno.h>
   8 #include <sys/ioctl.h>
   9 #include <sys/param.h>
  10 #include "term.h"
  11 #include "evlist.h"
  12 #include "evsel.h"
  13 #include <subcmd/parse-options.h>
  14 #include "parse-events.h"
  15 #include "string2.h"
  16 #include "strbuf.h"
  17 #include "debug.h"
  18 #include <api/fs/tracing_path.h>
  19 #include <perf/cpumap.h>
  20 #include <util/parse-events-bison.h>
  21 #include <util/parse-events-flex.h>
  22 #include "pmu.h"
  23 #include "pmus.h"
  24 #include "asm/bug.h"
  25 #include "util/parse-branch-options.h"
  26 #include "util/evsel_config.h"
  27 #include "util/event.h"
  28 #include "util/bpf-filter.h"
  29 #include "util/util.h"
  30 #include "tracepoint.h"
  31
  32 #define MAX_NAME_LEN 100
  33
  34 #ifdef PARSER_DEBUG
  35 extern int parse_events_debug;
  36 #endif
  37 static int get_config_terms(struct parse_events_terms *head_config, struct list_head *head_terms);
  38 static int parse_events_terms__copy(const struct parse_events_terms *src,
  39                                     struct parse_events_terms *dest);
  40
  41 struct event_symbol event_symbols_hw[PERF_COUNT_HW_MAX] = {
  42         [PERF_COUNT_HW_CPU_CYCLES] = {
  43                 .symbol = "cpu-cycles",
  44                 .alias  = "cycles",
  45         },
  46         [PERF_COUNT_HW_INSTRUCTIONS] = {
  47                 .symbol = "instructions",
  48                 .alias  = "",
  49         },
  50         [PERF_COUNT_HW_CACHE_REFERENCES] = {
  51                 .symbol = "cache-references",
  52                 .alias  = "",
  53         },
  54         [PERF_COUNT_HW_CACHE_MISSES] = {
  55                 .symbol = "cache-misses",
  56                 .alias  = "",
  57         },
  58         [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = {
  59                 .symbol = "branch-instructions",
  60                 .alias  = "branches",
  61         },
  62         [PERF_COUNT_HW_BRANCH_MISSES] = {
  63                 .symbol = "branch-misses",
  64                 .alias  = "",
  65         },
  66         [PERF_COUNT_HW_BUS_CYCLES] = {
  67                 .symbol = "bus-cycles",
  68                 .alias  = "",
  69         },
  70         [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = {
  71                 .symbol = "stalled-cycles-frontend",
  72                 .alias  = "idle-cycles-frontend",
  73         },
  74         [PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = {
  75                 .symbol = "stalled-cycles-backend",
  76                 .alias  = "idle-cycles-backend",
  77         },
  78         [PERF_COUNT_HW_REF_CPU_CYCLES] = {
  79                 .symbol = "ref-cycles",
  80                 .alias  = "",
  81         },
  82 };
  83
  84 struct event_symbol event_symbols_sw[PERF_COUNT_SW_MAX] = {
  85         [PERF_COUNT_SW_CPU_CLOCK] = {
  86                 .symbol = "cpu-clock",
  87                 .alias  = "",
  88         },
  89         [PERF_COUNT_SW_TASK_CLOCK] = {
  90                 .symbol = "task-clock",
  91                 .alias  = "",
  92         },
  93         [PERF_COUNT_SW_PAGE_FAULTS] = {
  94                 .symbol = "page-faults",
  95                 .alias  = "faults",
  96         },
  97         [PERF_COUNT_SW_CONTEXT_SWITCHES] = {
  98                 .symbol = "context-switches",
  99                 .alias  = "cs",
 100         },
 101         [PERF_COUNT_SW_CPU_MIGRATIONS] = {
 102                 .symbol = "cpu-migrations",
 103                 .alias  = "migrations",
 104         },
 105         [PERF_COUNT_SW_PAGE_FAULTS_MIN] = {
 106                 .symbol = "minor-faults",
 107                 .alias  = "",
 108         },
 109         [PERF_COUNT_SW_PAGE_FAULTS_MAJ] = {
 110                 .symbol = "major-faults",
 111                 .alias  = "",
 112         },
 113         [PERF_COUNT_SW_ALIGNMENT_FAULTS] = {
 114                 .symbol = "alignment-faults",
 115                 .alias  = "",
 116         },
 117         [PERF_COUNT_SW_EMULATION_FAULTS] = {
 118                 .symbol = "emulation-faults",
 119                 .alias  = "",
 120         },
 121         [PERF_COUNT_SW_DUMMY] = {
 122                 .symbol = "dummy",
 123                 .alias  = "",
 124         },
 125         [PERF_COUNT_SW_BPF_OUTPUT] = {
 126                 .symbol = "bpf-output",
 127                 .alias  = "",
 128         },
 129         [PERF_COUNT_SW_CGROUP_SWITCHES] = {
 130                 .symbol = "cgroup-switches",
 131                 .alias  = "",
 132         },
 133 };
 134
 135 const char *event_type(int type)
 136 {
 137         switch (type) {
 138         case PERF_TYPE_HARDWARE:
 139                 return "hardware";
 140
 141         case PERF_TYPE_SOFTWARE:
 142                 return "software";
 143
 144         case PERF_TYPE_TRACEPOINT:
 145                 return "tracepoint";
 146
 147         case PERF_TYPE_HW_CACHE:
 148                 return "hardware-cache";
 149
 150         default:
 151                 break;
 152         }
 153
 154         return "unknown";
 155 }
 156
 157 static char *get_config_str(struct parse_events_terms *head_terms,
 158                             enum parse_events__term_type type_term)
 159 {
 160         struct parse_events_term *term;
 161
 162         if (!head_terms)
 163                 return NULL;
 164
 165         list_for_each_entry(term, &head_terms->terms, list)
 166                 if (term->type_term == type_term)
 167                         return term->val.str;
 168
 169         return NULL;
 170 }
 171
 172 static char *get_config_metric_id(struct parse_events_terms *head_terms)
 173 {
 174         return get_config_str(head_terms, PARSE_EVENTS__TERM_TYPE_METRIC_ID);
 175 }
 176
 177 static char *get_config_name(struct parse_events_terms *head_terms)
 178 {
 179         return get_config_str(head_terms, PARSE_EVENTS__TERM_TYPE_NAME);
 180 }
 181
 182 /**
 183  * fix_raw - For each raw term see if there is an event (aka alias) in pmu that
 184  *           matches the raw's string value. If the string value matches an
 185  *           event then change the term to be an event, if not then change it to
 186  *           be a config term. For example, "read" may be an event of the PMU or
 187  *           a raw hex encoding of 0xead. The fix-up is done late so the PMU of
 188  *           the event can be determined and we don't need to scan all PMUs
 189  *           ahead-of-time.
 190  * @config_terms: the list of terms that may contain a raw term.
 191  * @pmu: the PMU to scan for events from.
 192  */
 193 static void fix_raw(struct parse_events_terms *config_terms, struct perf_pmu *pmu)
 194 {
 195         struct parse_events_term *term;
 196
 197         list_for_each_entry(term, &config_terms->terms, list) {
 198                 u64 num;
 199
 200                 if (term->type_term != PARSE_EVENTS__TERM_TYPE_RAW)
 201                         continue;
 202
 203                 if (perf_pmu__have_event(pmu, term->val.str)) {
 204                         zfree(&term->config);
 205                         term->config = term->val.str;
 206                         term->type_val = PARSE_EVENTS__TERM_TYPE_NUM;
 207                         term->type_term = PARSE_EVENTS__TERM_TYPE_USER;
 208                         term->val.num = 1;
 209                         term->no_value = true;
 210                         continue;
 211                 }
 212
 213                 zfree(&term->config);
 214                 term->config = strdup("config");
 215                 errno = 0;
 216                 num = strtoull(term->val.str + 1, NULL, 16);
 217                 assert(errno == 0);
 218                 free(term->val.str);
 219                 term->type_val = PARSE_EVENTS__TERM_TYPE_NUM;
 220                 term->type_term = PARSE_EVENTS__TERM_TYPE_CONFIG;
 221                 term->val.num = num;
 222                 term->no_value = false;
 223         }
 224 }
 225
 226 static struct evsel *
 227 __add_event(struct list_head *list, int *idx,
 228             struct perf_event_attr *attr,
 229             bool init_attr,
 230             const char *name, const char *metric_id, struct perf_pmu *pmu,
 231             struct list_head *config_terms, bool auto_merge_stats,
 232             const char *cpu_list)
 233 {
 234         struct evsel *evsel;
 235         struct perf_cpu_map *cpus = pmu ? perf_cpu_map__get(pmu->cpus) :
 236                                cpu_list ? perf_cpu_map__new(cpu_list) : NULL;
 237
 238         if (pmu)
 239                 perf_pmu__warn_invalid_formats(pmu);
 240
 241         if (pmu && (attr->type == PERF_TYPE_RAW || attr->type >= PERF_TYPE_MAX)) {
 242                 perf_pmu__warn_invalid_config(pmu, attr->config, name,
 243                                               PERF_PMU_FORMAT_VALUE_CONFIG, "config");
 244                 perf_pmu__warn_invalid_config(pmu, attr->config1, name,
 245                                               PERF_PMU_FORMAT_VALUE_CONFIG1, "config1");
 246                 perf_pmu__warn_invalid_config(pmu, attr->config2, name,
 247                                               PERF_PMU_FORMAT_VALUE_CONFIG2, "config2");
 248                 perf_pmu__warn_invalid_config(pmu, attr->config3, name,
 249                                               PERF_PMU_FORMAT_VALUE_CONFIG3, "config3");
 250         }
 251         if (init_attr)
 252                 event_attr_init(attr);
 253
 254         evsel = evsel__new_idx(attr, *idx);
 255         if (!evsel) {
 256                 perf_cpu_map__put(cpus);
 257                 return NULL;
 258         }
 259
 260         (*idx)++;
 261         evsel->core.cpus = cpus;
 262         evsel->core.own_cpus = perf_cpu_map__get(cpus);
 263         evsel->core.requires_cpu = pmu ? pmu->is_uncore : false;
 264         evsel->core.is_pmu_core = pmu ? pmu->is_core : false;
 265         evsel->auto_merge_stats = auto_merge_stats;
 266         evsel->pmu = pmu;
 267         evsel->pmu_name = pmu ? strdup(pmu->name) : NULL;
 268
 269         if (name)
 270                 evsel->name = strdup(name);
 271
 272         if (metric_id)
 273                 evsel->metric_id = strdup(metric_id);
 274
 275         if (config_terms)
 276                 list_splice_init(config_terms, &evsel->config_terms);
 277
 278         if (list)
 279                 list_add_tail(&evsel->core.node, list);
 280
 281         return evsel;
 282 }
 283
 284 struct evsel *parse_events__add_event(int idx, struct perf_event_attr *attr,
 285                                       const char *name, const char *metric_id,
 286                                       struct perf_pmu *pmu)
 287 {
 288         return __add_event(/*list=*/NULL, &idx, attr, /*init_attr=*/false, name,
 289                            metric_id, pmu, /*config_terms=*/NULL,
 290                            /*auto_merge_stats=*/false, /*cpu_list=*/NULL);
 291 }
 292
 293 static int add_event(struct list_head *list, int *idx,
 294                      struct perf_event_attr *attr, const char *name,
 295                      const char *metric_id, struct list_head *config_terms)
 296 {
 297         return __add_event(list, idx, attr, /*init_attr*/true, name, metric_id,
 298                            /*pmu=*/NULL, config_terms,
 299                            /*auto_merge_stats=*/false, /*cpu_list=*/NULL) ? 0 : -ENOMEM;
 300 }
 301
 302 static int add_event_tool(struct list_head *list, int *idx,
 303                           enum perf_tool_event tool_event)
 304 {
 305         struct evsel *evsel;
 306         struct perf_event_attr attr = {
 307                 .type = PERF_TYPE_SOFTWARE,
 308                 .config = PERF_COUNT_SW_DUMMY,
 309         };
 310
 311         evsel = __add_event(list, idx, &attr, /*init_attr=*/true, /*name=*/NULL,
 312                             /*metric_id=*/NULL, /*pmu=*/NULL,
 313                             /*config_terms=*/NULL, /*auto_merge_stats=*/false,
 314                             /*cpu_list=*/"0");
 315         if (!evsel)
 316                 return -ENOMEM;
 317         evsel->tool_event = tool_event;
 318         if (tool_event == PERF_TOOL_DURATION_TIME
 319             || tool_event == PERF_TOOL_USER_TIME
 320             || tool_event == PERF_TOOL_SYSTEM_TIME) {
 321                 free((char *)evsel->unit);
 322                 evsel->unit = strdup("ns");
 323         }
 324         return 0;
 325 }
 326
 327 /**
 328  * parse_aliases - search names for entries beginning or equalling str ignoring
 329  *                 case. If mutliple entries in names match str then the longest
 330  *                 is chosen.
 331  * @str: The needle to look for.
 332  * @names: The haystack to search.
 333  * @size: The size of the haystack.
 334  * @longest: Out argument giving the length of the matching entry.
 335  */
 336 static int parse_aliases(const char *str, const char *const names[][EVSEL__MAX_ALIASES], int size,
 337                          int *longest)
 338 {
 339         *longest = -1;
 340         for (int i = 0; i < size; i++) {
 341                 for (int j = 0; j < EVSEL__MAX_ALIASES && names[i][j]; j++) {
 342                         int n = strlen(names[i][j]);
 343
 344                         if (n > *longest && !strncasecmp(str, names[i][j], n))
 345                                 *longest = n;
 346                 }
 347                 if (*longest > 0)
 348                         return i;
 349         }
 350
 351         return -1;
 352 }
 353
 354 typedef int config_term_func_t(struct perf_event_attr *attr,
 355                                struct parse_events_term *term,
 356                                struct parse_events_error *err);
 357 static int config_term_common(struct perf_event_attr *attr,
 358                               struct parse_events_term *term,
 359                               struct parse_events_error *err);
 360 static int config_attr(struct perf_event_attr *attr,
 361                        struct parse_events_terms *head,
 362                        struct parse_events_error *err,
 363                        config_term_func_t config_term);
 364
 365 /**
 366  * parse_events__decode_legacy_cache - Search name for the legacy cache event
 367  *                                     name composed of 1, 2 or 3 hyphen
 368  *                                     separated sections. The first section is
 369  *                                     the cache type while the others are the
 370  *                                     optional op and optional result. To make
 371  *                                     life hard the names in the table also
 372  *                                     contain hyphens and the longest name
 373  *                                     should always be selected.
 374  */
 375 int parse_events__decode_legacy_cache(const char *name, int extended_pmu_type, __u64 *config)
 376 {
 377         int len, cache_type = -1, cache_op = -1, cache_result = -1;
 378         const char *name_end = &name[strlen(name) + 1];
 379         const char *str = name;
 380
 381         cache_type = parse_aliases(str, evsel__hw_cache, PERF_COUNT_HW_CACHE_MAX, &len);
 382         if (cache_type == -1)
 383                 return -EINVAL;
 384         str += len + 1;
 385
 386         if (str < name_end) {
 387                 cache_op = parse_aliases(str, evsel__hw_cache_op,
 388                                         PERF_COUNT_HW_CACHE_OP_MAX, &len);
 389                 if (cache_op >= 0) {
 390                         if (!evsel__is_cache_op_valid(cache_type, cache_op))
 391                                 return -EINVAL;
 392                         str += len + 1;
 393                 } else {
 394                         cache_result = parse_aliases(str, evsel__hw_cache_result,
 395                                                 PERF_COUNT_HW_CACHE_RESULT_MAX, &len);
 396                         if (cache_result >= 0)
 397                                 str += len + 1;
 398                 }
 399         }
 400         if (str < name_end) {
 401                 if (cache_op < 0) {
 402                         cache_op = parse_aliases(str, evsel__hw_cache_op,
 403                                                 PERF_COUNT_HW_CACHE_OP_MAX, &len);
 404                         if (cache_op >= 0) {
 405                                 if (!evsel__is_cache_op_valid(cache_type, cache_op))
 406                                         return -EINVAL;
 407                         }
 408                 } else if (cache_result < 0) {
 409                         cache_result = parse_aliases(str, evsel__hw_cache_result,
 410                                                 PERF_COUNT_HW_CACHE_RESULT_MAX, &len);
 411                 }
 412         }
 413
 414         /*
 415          * Fall back to reads:
 416          */
 417         if (cache_op == -1)
 418                 cache_op = PERF_COUNT_HW_CACHE_OP_READ;
 419
 420         /*
 421          * Fall back to accesses:
 422          */
 423         if (cache_result == -1)
 424                 cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS;
 425
 426         *config = cache_type | (cache_op << 8) | (cache_result << 16);
 427         if (perf_pmus__supports_extended_type())
 428                 *config |= (__u64)extended_pmu_type << PERF_PMU_TYPE_SHIFT;
 429         return 0;
 430 }
 431
 432 /**
 433  * parse_events__filter_pmu - returns false if a wildcard PMU should be
 434  *                            considered, true if it should be filtered.
 435  */
 436 bool parse_events__filter_pmu(const struct parse_events_state *parse_state,
 437                               const struct perf_pmu *pmu)
 438 {
 439         if (parse_state->pmu_filter == NULL)
 440                 return false;
 441
 442         return strcmp(parse_state->pmu_filter, pmu->name) != 0;
 443 }
 444
 445 int parse_events_add_cache(struct list_head *list, int *idx, const char *name,
 446                            struct parse_events_state *parse_state,
 447                            struct parse_events_terms *head_config)
 448 {
 449         struct perf_pmu *pmu = NULL;
 450         bool found_supported = false;
 451         const char *config_name = get_config_name(head_config);
 452         const char *metric_id = get_config_metric_id(head_config);
 453
 454         /* Legacy cache events are only supported by core PMUs. */
 455         while ((pmu = perf_pmus__scan_core(pmu)) != NULL) {
 456                 LIST_HEAD(config_terms);
 457                 struct perf_event_attr attr;
 458                 int ret;
 459
 460                 if (parse_events__filter_pmu(parse_state, pmu))
 461                         continue;
 462
 463                 memset(&attr, 0, sizeof(attr));
 464                 attr.type = PERF_TYPE_HW_CACHE;
 465
 466                 ret = parse_events__decode_legacy_cache(name, pmu->type, &attr.config);
 467                 if (ret)
 468                         return ret;
 469
 470                 found_supported = true;
 471
 472                 if (head_config) {
 473                         if (config_attr(&attr, head_config, parse_state->error, config_term_common))
 474                                 return -EINVAL;
 475
 476                         if (get_config_terms(head_config, &config_terms))
 477                                 return -ENOMEM;
 478                 }
 479
 480                 if (__add_event(list, idx, &attr, /*init_attr*/true, config_name ?: name,
 481                                 metric_id, pmu, &config_terms, /*auto_merge_stats=*/false,
 482                                 /*cpu_list=*/NULL) == NULL)
 483                         return -ENOMEM;
 484
 485                 free_config_terms(&config_terms);
 486         }
 487         return found_supported ? 0 : -EINVAL;
 488 }
 489
 490 #ifdef HAVE_LIBTRACEEVENT
 491 static void tracepoint_error(struct parse_events_error *e, int err,
 492                              const char *sys, const char *name, int column)
 493 {
 494         const char *str;
 495         char help[BUFSIZ];
 496
 497         if (!e)
 498                 return;
 499
 500         /*
 501          * We get error directly from syscall errno ( > 0),
 502          * or from encoded pointer's error ( < 0).
 503          */
 504         err = abs(err);
 505
 506         switch (err) {
 507         case EACCES:
 508                 str = "can't access trace events";
 509                 break;
 510         case ENOENT:
 511                 str = "unknown tracepoint";
 512                 break;
 513         default:
 514                 str = "failed to add tracepoint";
 515                 break;
 516         }
 517
 518         tracing_path__strerror_open_tp(err, help, sizeof(help), sys, name);
 519         parse_events_error__handle(e, column, strdup(str), strdup(help));
 520 }
 521
 522 static int add_tracepoint(struct list_head *list, int *idx,
 523                           const char *sys_name, const char *evt_name,
 524                           struct parse_events_error *err,
 525                           struct parse_events_terms *head_config, void *loc_)
 526 {
 527         YYLTYPE *loc = loc_;
 528         struct evsel *evsel = evsel__newtp_idx(sys_name, evt_name, (*idx)++);
 529
 530         if (IS_ERR(evsel)) {
 531                 tracepoint_error(err, PTR_ERR(evsel), sys_name, evt_name, loc->first_column);
 532                 return PTR_ERR(evsel);
 533         }
 534
 535         if (head_config) {
 536                 LIST_HEAD(config_terms);
 537
 538                 if (get_config_terms(head_config, &config_terms))
 539                         return -ENOMEM;
 540                 list_splice(&config_terms, &evsel->config_terms);
 541         }
 542
 543         list_add_tail(&evsel->core.node, list);
 544         return 0;
 545 }
 546
 547 static int add_tracepoint_multi_event(struct list_head *list, int *idx,
 548                                       const char *sys_name, const char *evt_name,
 549                                       struct parse_events_error *err,
 550                                       struct parse_events_terms *head_config, YYLTYPE *loc)
 551 {
 552         char *evt_path;
 553         struct dirent *evt_ent;
 554         DIR *evt_dir;
 555         int ret = 0, found = 0;
 556
 557         evt_path = get_events_file(sys_name);
 558         if (!evt_path) {
 559                 tracepoint_error(err, errno, sys_name, evt_name, loc->first_column);
 560                 return -1;
 561         }
 562         evt_dir = opendir(evt_path);
 563         if (!evt_dir) {
 564                 put_events_file(evt_path);
 565                 tracepoint_error(err, errno, sys_name, evt_name, loc->first_column);
 566                 return -1;
 567         }
 568
 569         while (!ret && (evt_ent = readdir(evt_dir))) {
 570                 if (!strcmp(evt_ent->d_name, ".")
 571                     || !strcmp(evt_ent->d_name, "..")
 572                     || !strcmp(evt_ent->d_name, "enable")
 573                     || !strcmp(evt_ent->d_name, "filter"))
 574                         continue;
 575
 576                 if (!strglobmatch(evt_ent->d_name, evt_name))
 577                         continue;
 578
 579                 found++;
 580
 581                 ret = add_tracepoint(list, idx, sys_name, evt_ent->d_name,
 582                                      err, head_config, loc);
 583         }
 584
 585         if (!found) {
 586                 tracepoint_error(err, ENOENT, sys_name, evt_name, loc->first_column);
 587                 ret = -1;
 588         }
 589
 590         put_events_file(evt_path);
 591         closedir(evt_dir);
 592         return ret;
 593 }
 594
 595 static int add_tracepoint_event(struct list_head *list, int *idx,
 596                                 const char *sys_name, const char *evt_name,
 597                                 struct parse_events_error *err,
 598                                 struct parse_events_terms *head_config, YYLTYPE *loc)
 599 {
 600         return strpbrk(evt_name, "*?") ?
 601                 add_tracepoint_multi_event(list, idx, sys_name, evt_name,
 602                                            err, head_config, loc) :
 603                 add_tracepoint(list, idx, sys_name, evt_name,
 604                                err, head_config, loc);
 605 }
 606
 607 static int add_tracepoint_multi_sys(struct list_head *list, int *idx,
 608                                     const char *sys_name, const char *evt_name,
 609                                     struct parse_events_error *err,
 610                                     struct parse_events_terms *head_config, YYLTYPE *loc)
 611 {
 612         struct dirent *events_ent;
 613         DIR *events_dir;
 614         int ret = 0;
 615
 616         events_dir = tracing_events__opendir();
 617         if (!events_dir) {
 618                 tracepoint_error(err, errno, sys_name, evt_name, loc->first_column);
 619                 return -1;
 620         }
 621
 622         while (!ret && (events_ent = readdir(events_dir))) {
 623                 if (!strcmp(events_ent->d_name, ".")
 624                     || !strcmp(events_ent->d_name, "..")
 625                     || !strcmp(events_ent->d_name, "enable")
 626                     || !strcmp(events_ent->d_name, "header_event")
 627                     || !strcmp(events_ent->d_name, "header_page"))
 628                         continue;
 629
 630                 if (!strglobmatch(events_ent->d_name, sys_name))
 631                         continue;
 632
 633                 ret = add_tracepoint_event(list, idx, events_ent->d_name,
 634                                            evt_name, err, head_config, loc);
 635         }
 636
 637         closedir(events_dir);
 638         return ret;
 639 }
 640 #endif /* HAVE_LIBTRACEEVENT */
 641
 642 static int
 643 parse_breakpoint_type(const char *type, struct perf_event_attr *attr)
 644 {
 645         int i;
 646
 647         for (i = 0; i < 3; i++) {
 648                 if (!type || !type[i])
 649                         break;
 650
 651 #define CHECK_SET_TYPE(bit)             \
 652 do {                                    \
 653         if (attr->bp_type & bit)        \
 654                 return -EINVAL;         \
 655         else                            \
 656                 attr->bp_type |= bit;   \
 657 } while (0)
 658
 659                 switch (type[i]) {
 660                 case 'r':
 661                         CHECK_SET_TYPE(HW_BREAKPOINT_R);
 662                         break;
 663                 case 'w':
 664                         CHECK_SET_TYPE(HW_BREAKPOINT_W);
 665                         break;
 666                 case 'x':
 667                         CHECK_SET_TYPE(HW_BREAKPOINT_X);
 668                         break;
 669                 default:
 670                         return -EINVAL;
 671                 }
 672         }
 673
 674 #undef CHECK_SET_TYPE
 675
 676         if (!attr->bp_type) /* Default */
 677                 attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W;
 678
 679         return 0;
 680 }
 681
 682 int parse_events_add_breakpoint(struct parse_events_state *parse_state,
 683                                 struct list_head *list,
 684                                 u64 addr, char *type, u64 len,
 685                                 struct parse_events_terms *head_config)
 686 {
 687         struct perf_event_attr attr;
 688         LIST_HEAD(config_terms);
 689         const char *name;
 690
 691         memset(&attr, 0, sizeof(attr));
 692         attr.bp_addr = addr;
 693
 694         if (parse_breakpoint_type(type, &attr))
 695                 return -EINVAL;
 696
 697         /* Provide some defaults if len is not specified */
 698         if (!len) {
 699                 if (attr.bp_type == HW_BREAKPOINT_X)
 700                         len = sizeof(long);
 701                 else
 702                         len = HW_BREAKPOINT_LEN_4;
 703         }
 704
 705         attr.bp_len = len;
 706
 707         attr.type = PERF_TYPE_BREAKPOINT;
 708         attr.sample_period = 1;
 709
 710         if (head_config) {
 711                 if (config_attr(&attr, head_config, parse_state->error,
 712                                 config_term_common))
 713                         return -EINVAL;
 714
 715                 if (get_config_terms(head_config, &config_terms))
 716                         return -ENOMEM;
 717         }
 718
 719         name = get_config_name(head_config);
 720
 721         return add_event(list, &parse_state->idx, &attr, name, /*mertic_id=*/NULL,
 722                          &config_terms);
 723 }
 724
 725 static int check_type_val(struct parse_events_term *term,
 726                           struct parse_events_error *err,
 727                           enum parse_events__term_val_type type)
 728 {
 729         if (type == term->type_val)
 730                 return 0;
 731
 732         if (err) {
 733                 parse_events_error__handle(err, term->err_val,
 734                                         type == PARSE_EVENTS__TERM_TYPE_NUM
 735                                         ? strdup("expected numeric value")
 736                                         : strdup("expected string value"),
 737                                         NULL);
 738         }
 739         return -EINVAL;
 740 }
 741
 742 static bool config_term_shrinked;
 743
 744 static const char *config_term_name(enum parse_events__term_type term_type)
 745 {
 746         /*
 747          * Update according to parse-events.l
 748          */
 749         static const char *config_term_names[__PARSE_EVENTS__TERM_TYPE_NR] = {
 750                 [PARSE_EVENTS__TERM_TYPE_USER]                  = "<sysfs term>",
 751                 [PARSE_EVENTS__TERM_TYPE_CONFIG]                = "config",
 752                 [PARSE_EVENTS__TERM_TYPE_CONFIG1]               = "config1",
 753                 [PARSE_EVENTS__TERM_TYPE_CONFIG2]               = "config2",
 754                 [PARSE_EVENTS__TERM_TYPE_CONFIG3]               = "config3",
 755                 [PARSE_EVENTS__TERM_TYPE_NAME]                  = "name",
 756                 [PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD]         = "period",
 757                 [PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ]           = "freq",
 758                 [PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE]    = "branch_type",
 759                 [PARSE_EVENTS__TERM_TYPE_TIME]                  = "time",
 760                 [PARSE_EVENTS__TERM_TYPE_CALLGRAPH]             = "call-graph",
 761                 [PARSE_EVENTS__TERM_TYPE_STACKSIZE]             = "stack-size",
 762                 [PARSE_EVENTS__TERM_TYPE_NOINHERIT]             = "no-inherit",
 763                 [PARSE_EVENTS__TERM_TYPE_INHERIT]               = "inherit",
 764                 [PARSE_EVENTS__TERM_TYPE_MAX_STACK]             = "max-stack",
 765                 [PARSE_EVENTS__TERM_TYPE_MAX_EVENTS]            = "nr",
 766                 [PARSE_EVENTS__TERM_TYPE_OVERWRITE]             = "overwrite",
 767                 [PARSE_EVENTS__TERM_TYPE_NOOVERWRITE]           = "no-overwrite",
 768                 [PARSE_EVENTS__TERM_TYPE_DRV_CFG]               = "driver-config",
 769                 [PARSE_EVENTS__TERM_TYPE_PERCORE]               = "percore",
 770                 [PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT]            = "aux-output",
 771                 [PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE]       = "aux-sample-size",
 772                 [PARSE_EVENTS__TERM_TYPE_METRIC_ID]             = "metric-id",
 773                 [PARSE_EVENTS__TERM_TYPE_RAW]                   = "raw",
 774                 [PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE]          = "legacy-cache",
 775                 [PARSE_EVENTS__TERM_TYPE_HARDWARE]              = "hardware",
 776         };
 777         if ((unsigned int)term_type >= __PARSE_EVENTS__TERM_TYPE_NR)
 778                 return "unknown term";
 779
 780         return config_term_names[term_type];
 781 }
 782
 783 static bool
 784 config_term_avail(enum parse_events__term_type term_type, struct parse_events_error *err)
 785 {
 786         char *err_str;
 787
 788         if (term_type < 0 || term_type >= __PARSE_EVENTS__TERM_TYPE_NR) {
 789                 parse_events_error__handle(err, -1,
 790                                         strdup("Invalid term_type"), NULL);
 791                 return false;
 792         }
 793         if (!config_term_shrinked)
 794                 return true;
 795
 796         switch (term_type) {
 797         case PARSE_EVENTS__TERM_TYPE_CONFIG:
 798         case PARSE_EVENTS__TERM_TYPE_CONFIG1:
 799         case PARSE_EVENTS__TERM_TYPE_CONFIG2:
 800         case PARSE_EVENTS__TERM_TYPE_CONFIG3:
 801         case PARSE_EVENTS__TERM_TYPE_NAME:
 802         case PARSE_EVENTS__TERM_TYPE_METRIC_ID:
 803         case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
 804         case PARSE_EVENTS__TERM_TYPE_PERCORE:
 805                 return true;
 806         case PARSE_EVENTS__TERM_TYPE_USER:
 807         case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
 808         case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
 809         case PARSE_EVENTS__TERM_TYPE_TIME:
 810         case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
 811         case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
 812         case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
 813         case PARSE_EVENTS__TERM_TYPE_INHERIT:
 814         case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
 815         case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS:
 816         case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
 817         case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
 818         case PARSE_EVENTS__TERM_TYPE_DRV_CFG:
 819         case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT:
 820         case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE:
 821         case PARSE_EVENTS__TERM_TYPE_RAW:
 822         case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE:
 823         case PARSE_EVENTS__TERM_TYPE_HARDWARE:
 824         default:
 825                 if (!err)
 826                         return false;
 827
 828                 /* term_type is validated so indexing is safe */
 829                 if (asprintf(&err_str, "'%s' is not usable in 'perf stat'",
 830                              config_term_name(term_type)) >= 0)
 831                         parse_events_error__handle(err, -1, err_str, NULL);
 832                 return false;
 833         }
 834 }
 835
 836 void parse_events__shrink_config_terms(void)
 837 {
 838         config_term_shrinked = true;
 839 }
 840
 841 static int config_term_common(struct perf_event_attr *attr,
 842                               struct parse_events_term *term,
 843                               struct parse_events_error *err)
 844 {
 845 #define CHECK_TYPE_VAL(type)                                               \
 846 do {                                                                       \
 847         if (check_type_val(term, err, PARSE_EVENTS__TERM_TYPE_ ## type)) \
 848                 return -EINVAL;                                            \
 849 } while (0)
 850
 851         switch (term->type_term) {
 852         case PARSE_EVENTS__TERM_TYPE_CONFIG:
 853                 CHECK_TYPE_VAL(NUM);
 854                 attr->config = term->val.num;
 855                 break;
 856         case PARSE_EVENTS__TERM_TYPE_CONFIG1:
 857                 CHECK_TYPE_VAL(NUM);
 858                 attr->config1 = term->val.num;
 859                 break;
 860         case PARSE_EVENTS__TERM_TYPE_CONFIG2:
 861                 CHECK_TYPE_VAL(NUM);
 862                 attr->config2 = term->val.num;
 863                 break;
 864         case PARSE_EVENTS__TERM_TYPE_CONFIG3:
 865                 CHECK_TYPE_VAL(NUM);
 866                 attr->config3 = term->val.num;
 867                 break;
 868         case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
 869                 CHECK_TYPE_VAL(NUM);
 870                 break;
 871         case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
 872                 CHECK_TYPE_VAL(NUM);
 873                 break;
 874         case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
 875                 CHECK_TYPE_VAL(STR);
 876                 if (strcmp(term->val.str, "no") &&
 877                     parse_branch_str(term->val.str,
 878                                     &attr->branch_sample_type)) {
 879                         parse_events_error__handle(err, term->err_val,
 880                                         strdup("invalid branch sample type"),
 881                                         NULL);
 882                         return -EINVAL;
 883                 }
 884                 break;
 885         case PARSE_EVENTS__TERM_TYPE_TIME:
 886                 CHECK_TYPE_VAL(NUM);
 887                 if (term->val.num > 1) {
 888                         parse_events_error__handle(err, term->err_val,
 889                                                 strdup("expected 0 or 1"),
 890                                                 NULL);
 891                         return -EINVAL;
 892                 }
 893                 break;
 894         case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
 895                 CHECK_TYPE_VAL(STR);
 896                 break;
 897         case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
 898                 CHECK_TYPE_VAL(NUM);
 899                 break;
 900         case PARSE_EVENTS__TERM_TYPE_INHERIT:
 901                 CHECK_TYPE_VAL(NUM);
 902                 break;
 903         case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
 904                 CHECK_TYPE_VAL(NUM);
 905                 break;
 906         case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
 907                 CHECK_TYPE_VAL(NUM);
 908                 break;
 909         case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
 910                 CHECK_TYPE_VAL(NUM);
 911                 break;
 912         case PARSE_EVENTS__TERM_TYPE_NAME:
 913                 CHECK_TYPE_VAL(STR);
 914                 break;
 915         case PARSE_EVENTS__TERM_TYPE_METRIC_ID:
 916                 CHECK_TYPE_VAL(STR);
 917                 break;
 918         case PARSE_EVENTS__TERM_TYPE_RAW:
 919                 CHECK_TYPE_VAL(STR);
 920                 break;
 921         case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
 922                 CHECK_TYPE_VAL(NUM);
 923                 break;
 924         case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS:
 925                 CHECK_TYPE_VAL(NUM);
 926                 break;
 927         case PARSE_EVENTS__TERM_TYPE_PERCORE:
 928                 CHECK_TYPE_VAL(NUM);
 929                 if ((unsigned int)term->val.num > 1) {
 930                         parse_events_error__handle(err, term->err_val,
 931                                                 strdup("expected 0 or 1"),
 932                                                 NULL);
 933                         return -EINVAL;
 934                 }
 935                 break;
 936         case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT:
 937                 CHECK_TYPE_VAL(NUM);
 938                 break;
 939         case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE:
 940                 CHECK_TYPE_VAL(NUM);
 941                 if (term->val.num > UINT_MAX) {
 942                         parse_events_error__handle(err, term->err_val,
 943                                                 strdup("too big"),
 944                                                 NULL);
 945                         return -EINVAL;
 946                 }
 947                 break;
 948         case PARSE_EVENTS__TERM_TYPE_DRV_CFG:
 949         case PARSE_EVENTS__TERM_TYPE_USER:
 950         case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE:
 951         case PARSE_EVENTS__TERM_TYPE_HARDWARE:
 952         default:
 953                 parse_events_error__handle(err, term->err_term,
 954                                         strdup(config_term_name(term->type_term)),
 955                                         parse_events_formats_error_string(NULL));
 956                 return -EINVAL;
 957         }
 958
 959         /*
 960          * Check term availability after basic checking so
 961          * PARSE_EVENTS__TERM_TYPE_USER can be found and filtered.
 962          *
 963          * If check availability at the entry of this function,
 964          * user will see "'<sysfs term>' is not usable in 'perf stat'"
 965          * if an invalid config term is provided for legacy events
 966          * (for example, instructions/badterm/...), which is confusing.
 967          */
 968         if (!config_term_avail(term->type_term, err))
 969                 return -EINVAL;
 970         return 0;
 971 #undef CHECK_TYPE_VAL
 972 }
 973
 974 static int config_term_pmu(struct perf_event_attr *attr,
 975                            struct parse_events_term *term,
 976                            struct parse_events_error *err)
 977 {
 978         if (term->type_term == PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE) {
 979                 struct perf_pmu *pmu = perf_pmus__find_by_type(attr->type);
 980
 981                 if (!pmu) {
 982                         char *err_str;
 983
 984                         if (asprintf(&err_str, "Failed to find PMU for type %d", attr->type) >= 0)
 985                                 parse_events_error__handle(err, term->err_term,
 986                                                            err_str, /*help=*/NULL);
 987                         return -EINVAL;
 988                 }
 989                 /*
 990                  * Rewrite the PMU event to a legacy cache one unless the PMU
 991                  * doesn't support legacy cache events or the event is present
 992                  * within the PMU.
 993                  */
 994                 if (perf_pmu__supports_legacy_cache(pmu) &&
 995                     !perf_pmu__have_event(pmu, term->config)) {
 996                         attr->type = PERF_TYPE_HW_CACHE;
 997                         return parse_events__decode_legacy_cache(term->config, pmu->type,
 998                                                                  &attr->config);
 999                 } else {
1000                         term->type_term = PARSE_EVENTS__TERM_TYPE_USER;
1001                         term->no_value = true;
1002                 }
1003         }
1004         if (term->type_term == PARSE_EVENTS__TERM_TYPE_HARDWARE) {
1005                 struct perf_pmu *pmu = perf_pmus__find_by_type(attr->type);
1006
1007                 if (!pmu) {
1008                         char *err_str;
1009
1010                         if (asprintf(&err_str, "Failed to find PMU for type %d", attr->type) >= 0)
1011                                 parse_events_error__handle(err, term->err_term,
1012                                                            err_str, /*help=*/NULL);
1013                         return -EINVAL;
1014                 }
1015                 /*
1016                  * If the PMU has a sysfs or json event prefer it over
1017                  * legacy. ARM requires this.
1018                  */
1019                 if (perf_pmu__have_event(pmu, term->config)) {
1020                         term->type_term = PARSE_EVENTS__TERM_TYPE_USER;
1021                         term->no_value = true;
1022                 } else {
1023                         attr->type = PERF_TYPE_HARDWARE;
1024                         attr->config = term->val.num;
1025                         if (perf_pmus__supports_extended_type())
1026                                 attr->config |= (__u64)pmu->type << PERF_PMU_TYPE_SHIFT;
1027                 }
1028                 return 0;
1029         }
1030         if (term->type_term == PARSE_EVENTS__TERM_TYPE_USER ||
1031             term->type_term == PARSE_EVENTS__TERM_TYPE_DRV_CFG) {
1032                 /*
1033                  * Always succeed for sysfs terms, as we dont know
1034                  * at this point what type they need to have.
1035                  */
1036                 return 0;
1037         }
1038         return config_term_common(attr, term, err);
1039 }
1040
1041 #ifdef HAVE_LIBTRACEEVENT
1042 static int config_term_tracepoint(struct perf_event_attr *attr,
1043                                   struct parse_events_term *term,
1044                                   struct parse_events_error *err)
1045 {
1046         switch (term->type_term) {
1047         case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
1048         case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1049         case PARSE_EVENTS__TERM_TYPE_INHERIT:
1050         case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1051         case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1052         case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS:
1053         case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1054         case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1055         case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT:
1056         case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE:
1057                 return config_term_common(attr, term, err);
1058         case PARSE_EVENTS__TERM_TYPE_USER:
1059         case PARSE_EVENTS__TERM_TYPE_CONFIG:
1060         case PARSE_EVENTS__TERM_TYPE_CONFIG1:
1061         case PARSE_EVENTS__TERM_TYPE_CONFIG2:
1062         case PARSE_EVENTS__TERM_TYPE_CONFIG3:
1063         case PARSE_EVENTS__TERM_TYPE_NAME:
1064         case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
1065         case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
1066         case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
1067         case PARSE_EVENTS__TERM_TYPE_TIME:
1068         case PARSE_EVENTS__TERM_TYPE_DRV_CFG:
1069         case PARSE_EVENTS__TERM_TYPE_PERCORE:
1070         case PARSE_EVENTS__TERM_TYPE_METRIC_ID:
1071         case PARSE_EVENTS__TERM_TYPE_RAW:
1072         case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE:
1073         case PARSE_EVENTS__TERM_TYPE_HARDWARE:
1074         default:
1075                 if (err) {
1076                         parse_events_error__handle(err, term->err_term,
1077                                                    strdup(config_term_name(term->type_term)),
1078                                 strdup("valid terms: call-graph,stack-size\n"));
1079                 }
1080                 return -EINVAL;
1081         }
1082
1083         return 0;
1084 }
1085 #endif
1086
1087 static int config_attr(struct perf_event_attr *attr,
1088                        struct parse_events_terms *head,
1089                        struct parse_events_error *err,
1090                        config_term_func_t config_term)
1091 {
1092         struct parse_events_term *term;
1093
1094         list_for_each_entry(term, &head->terms, list)
1095                 if (config_term(attr, term, err))
1096                         return -EINVAL;
1097
1098         return 0;
1099 }
1100
1101 static int get_config_terms(struct parse_events_terms *head_config, struct list_head *head_terms)
1102 {
1103 #define ADD_CONFIG_TERM(__type, __weak)                         \
1104         struct evsel_config_term *__t;                  \
1105                                                                 \
1106         __t = zalloc(sizeof(*__t));                             \
1107         if (!__t)                                               \
1108                 return -ENOMEM;                                 \
1109                                                                 \
1110         INIT_LIST_HEAD(&__t->list);                             \
1111         __t->type       = EVSEL__CONFIG_TERM_ ## __type;        \
1112         __t->weak       = __weak;                               \
1113         list_add_tail(&__t->list, head_terms)
1114
1115 #define ADD_CONFIG_TERM_VAL(__type, __name, __val, __weak)      \
1116 do {                                                            \
1117         ADD_CONFIG_TERM(__type, __weak);                        \
1118         __t->val.__name = __val;                                \
1119 } while (0)
1120
1121 #define ADD_CONFIG_TERM_STR(__type, __val, __weak)              \
1122 do {                                                            \
1123         ADD_CONFIG_TERM(__type, __weak);                        \
1124         __t->val.str = strdup(__val);                           \
1125         if (!__t->val.str) {                                    \
1126                 zfree(&__t);                                    \
1127                 return -ENOMEM;                                 \
1128         }                                                       \
1129         __t->free_str = true;                                   \
1130 } while (0)
1131
1132         struct parse_events_term *term;
1133
1134         list_for_each_entry(term, &head_config->terms, list) {
1135                 switch (term->type_term) {
1136                 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
1137                         ADD_CONFIG_TERM_VAL(PERIOD, period, term->val.num, term->weak);
1138                         break;
1139                 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
1140                         ADD_CONFIG_TERM_VAL(FREQ, freq, term->val.num, term->weak);
1141                         break;
1142                 case PARSE_EVENTS__TERM_TYPE_TIME:
1143                         ADD_CONFIG_TERM_VAL(TIME, time, term->val.num, term->weak);
1144                         break;
1145                 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
1146                         ADD_CONFIG_TERM_STR(CALLGRAPH, term->val.str, term->weak);
1147                         break;
1148                 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
1149                         ADD_CONFIG_TERM_STR(BRANCH, term->val.str, term->weak);
1150                         break;
1151                 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1152                         ADD_CONFIG_TERM_VAL(STACK_USER, stack_user,
1153                                             term->val.num, term->weak);
1154                         break;
1155                 case PARSE_EVENTS__TERM_TYPE_INHERIT:
1156                         ADD_CONFIG_TERM_VAL(INHERIT, inherit,
1157                                             term->val.num ? 1 : 0, term->weak);
1158                         break;
1159                 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1160                         ADD_CONFIG_TERM_VAL(INHERIT, inherit,
1161                                             term->val.num ? 0 : 1, term->weak);
1162                         break;
1163                 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1164                         ADD_CONFIG_TERM_VAL(MAX_STACK, max_stack,
1165                                             term->val.num, term->weak);
1166                         break;
1167                 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS:
1168                         ADD_CONFIG_TERM_VAL(MAX_EVENTS, max_events,
1169                                             term->val.num, term->weak);
1170                         break;
1171                 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1172                         ADD_CONFIG_TERM_VAL(OVERWRITE, overwrite,
1173                                             term->val.num ? 1 : 0, term->weak);
1174                         break;
1175                 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1176                         ADD_CONFIG_TERM_VAL(OVERWRITE, overwrite,
1177                                             term->val.num ? 0 : 1, term->weak);
1178                         break;
1179                 case PARSE_EVENTS__TERM_TYPE_DRV_CFG:
1180                         ADD_CONFIG_TERM_STR(DRV_CFG, term->val.str, term->weak);
1181                         break;
1182                 case PARSE_EVENTS__TERM_TYPE_PERCORE:
1183                         ADD_CONFIG_TERM_VAL(PERCORE, percore,
1184                                             term->val.num ? true : false, term->weak);
1185                         break;
1186                 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT:
1187                         ADD_CONFIG_TERM_VAL(AUX_OUTPUT, aux_output,
1188                                             term->val.num ? 1 : 0, term->weak);
1189                         break;
1190                 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE:
1191                         ADD_CONFIG_TERM_VAL(AUX_SAMPLE_SIZE, aux_sample_size,
1192                                             term->val.num, term->weak);
1193                         break;
1194                 case PARSE_EVENTS__TERM_TYPE_USER:
1195                 case PARSE_EVENTS__TERM_TYPE_CONFIG:
1196                 case PARSE_EVENTS__TERM_TYPE_CONFIG1:
1197                 case PARSE_EVENTS__TERM_TYPE_CONFIG2:
1198                 case PARSE_EVENTS__TERM_TYPE_CONFIG3:
1199                 case PARSE_EVENTS__TERM_TYPE_NAME:
1200                 case PARSE_EVENTS__TERM_TYPE_METRIC_ID:
1201                 case PARSE_EVENTS__TERM_TYPE_RAW:
1202                 case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE:
1203                 case PARSE_EVENTS__TERM_TYPE_HARDWARE:
1204                 default:
1205                         break;
1206                 }
1207         }
1208         return 0;
1209 }
1210
1211 /*
1212  * Add EVSEL__CONFIG_TERM_CFG_CHG where cfg_chg will have a bit set for
1213  * each bit of attr->config that the user has changed.
1214  */
1215 static int get_config_chgs(struct perf_pmu *pmu, struct parse_events_terms *head_config,
1216                            struct list_head *head_terms)
1217 {
1218         struct parse_events_term *term;
1219         u64 bits = 0;
1220         int type;
1221
1222         list_for_each_entry(term, &head_config->terms, list) {
1223                 switch (term->type_term) {
1224                 case PARSE_EVENTS__TERM_TYPE_USER:
1225                         type = perf_pmu__format_type(pmu, term->config);
1226                         if (type != PERF_PMU_FORMAT_VALUE_CONFIG)
1227                                 continue;
1228                         bits |= perf_pmu__format_bits(pmu, term->config);
1229                         break;
1230                 case PARSE_EVENTS__TERM_TYPE_CONFIG:
1231                         bits = ~(u64)0;
1232                         break;
1233                 case PARSE_EVENTS__TERM_TYPE_CONFIG1:
1234                 case PARSE_EVENTS__TERM_TYPE_CONFIG2:
1235                 case PARSE_EVENTS__TERM_TYPE_CONFIG3:
1236                 case PARSE_EVENTS__TERM_TYPE_NAME:
1237                 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
1238                 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
1239                 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
1240                 case PARSE_EVENTS__TERM_TYPE_TIME:
1241                 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
1242                 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1243                 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1244                 case PARSE_EVENTS__TERM_TYPE_INHERIT:
1245                 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1246                 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS:
1247                 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1248                 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1249                 case PARSE_EVENTS__TERM_TYPE_DRV_CFG:
1250                 case PARSE_EVENTS__TERM_TYPE_PERCORE:
1251                 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT:
1252                 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE:
1253                 case PARSE_EVENTS__TERM_TYPE_METRIC_ID:
1254                 case PARSE_EVENTS__TERM_TYPE_RAW:
1255                 case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE:
1256                 case PARSE_EVENTS__TERM_TYPE_HARDWARE:
1257                 default:
1258                         break;
1259                 }
1260         }
1261
1262         if (bits)
1263                 ADD_CONFIG_TERM_VAL(CFG_CHG, cfg_chg, bits, false);
1264
1265 #undef ADD_CONFIG_TERM
1266         return 0;
1267 }
1268
1269 int parse_events_add_tracepoint(struct list_head *list, int *idx,
1270                                 const char *sys, const char *event,
1271                                 struct parse_events_error *err,
1272                                 struct parse_events_terms *head_config, void *loc_)
1273 {
1274         YYLTYPE *loc = loc_;
1275 #ifdef HAVE_LIBTRACEEVENT
1276         if (head_config) {
1277                 struct perf_event_attr attr;
1278
1279                 if (config_attr(&attr, head_config, err,
1280                                 config_term_tracepoint))
1281                         return -EINVAL;
1282         }
1283
1284         if (strpbrk(sys, "*?"))
1285                 return add_tracepoint_multi_sys(list, idx, sys, event,
1286                                                 err, head_config, loc);
1287         else
1288                 return add_tracepoint_event(list, idx, sys, event,
1289                                             err, head_config, loc);
1290 #else
1291         (void)list;
1292         (void)idx;
1293         (void)sys;
1294         (void)event;
1295         (void)head_config;
1296         parse_events_error__handle(err, loc->first_column, strdup("unsupported tracepoint"),
1297                                 strdup("libtraceevent is necessary for tracepoint support"));
1298         return -1;
1299 #endif
1300 }
1301
1302 static int __parse_events_add_numeric(struct parse_events_state *parse_state,
1303                                 struct list_head *list,
1304                                 struct perf_pmu *pmu, u32 type, u32 extended_type,
1305                                 u64 config, struct parse_events_terms *head_config)
1306 {
1307         struct perf_event_attr attr;
1308         LIST_HEAD(config_terms);
1309         const char *name, *metric_id;
1310         int ret;
1311
1312         memset(&attr, 0, sizeof(attr));
1313         attr.type = type;
1314         attr.config = config;
1315         if (extended_type && (type == PERF_TYPE_HARDWARE || type == PERF_TYPE_HW_CACHE)) {
1316                 assert(perf_pmus__supports_extended_type());
1317                 attr.config |= (u64)extended_type << PERF_PMU_TYPE_SHIFT;
1318         }
1319
1320         if (head_config) {
1321                 if (config_attr(&attr, head_config, parse_state->error,
1322                                 config_term_common))
1323                         return -EINVAL;
1324
1325                 if (get_config_terms(head_config, &config_terms))
1326                         return -ENOMEM;
1327         }
1328
1329         name = get_config_name(head_config);
1330         metric_id = get_config_metric_id(head_config);
1331         ret = __add_event(list, &parse_state->idx, &attr, /*init_attr*/true, name,
1332                         metric_id, pmu, &config_terms, /*auto_merge_stats=*/false,
1333                         /*cpu_list=*/NULL) ? 0 : -ENOMEM;
1334         free_config_terms(&config_terms);
1335         return ret;
1336 }
1337
1338 int parse_events_add_numeric(struct parse_events_state *parse_state,
1339                              struct list_head *list,
1340                              u32 type, u64 config,
1341                              struct parse_events_terms *head_config,
1342                              bool wildcard)
1343 {
1344         struct perf_pmu *pmu = NULL;
1345         bool found_supported = false;
1346
1347         /* Wildcards on numeric values are only supported by core PMUs. */
1348         if (wildcard && perf_pmus__supports_extended_type()) {
1349                 while ((pmu = perf_pmus__scan_core(pmu)) != NULL) {
1350                         int ret;
1351
1352                         found_supported = true;
1353                         if (parse_events__filter_pmu(parse_state, pmu))
1354                                 continue;
1355
1356                         ret = __parse_events_add_numeric(parse_state, list, pmu,
1357                                                          type, pmu->type,
1358                                                          config, head_config);
1359                         if (ret)
1360                                 return ret;
1361                 }
1362                 if (found_supported)
1363                         return 0;
1364         }
1365         return __parse_events_add_numeric(parse_state, list, perf_pmus__find_by_type(type),
1366                                         type, /*extended_type=*/0, config, head_config);
1367 }
1368
1369 int parse_events_add_tool(struct parse_events_state *parse_state,
1370                           struct list_head *list,
1371                           int tool_event)
1372 {
1373         return add_event_tool(list, &parse_state->idx, tool_event);
1374 }
1375
1376 static bool config_term_percore(struct list_head *config_terms)
1377 {
1378         struct evsel_config_term *term;
1379
1380         list_for_each_entry(term, config_terms, list) {
1381                 if (term->type == EVSEL__CONFIG_TERM_PERCORE)
1382                         return term->val.percore;
1383         }
1384
1385         return false;
1386 }
1387
1388 int parse_events_add_pmu(struct parse_events_state *parse_state,
1389                          struct list_head *list, const char *name,
1390                          const struct parse_events_terms *const_parsed_terms,
1391                          bool auto_merge_stats, void *loc_)
1392 {
1393         struct perf_event_attr attr;
1394         struct perf_pmu_info info;
1395         struct perf_pmu *pmu;
1396         struct evsel *evsel;
1397         struct parse_events_error *err = parse_state->error;
1398         YYLTYPE *loc = loc_;
1399         LIST_HEAD(config_terms);
1400         struct parse_events_terms parsed_terms;
1401         bool alias_rewrote_terms = false;
1402
1403         pmu = parse_state->fake_pmu ?: perf_pmus__find(name);
1404
1405         if (!pmu) {
1406                 char *err_str;
1407
1408                 if (asprintf(&err_str,
1409                                 "Cannot find PMU `%s'. Missing kernel support?",
1410                                 name) >= 0)
1411                         parse_events_error__handle(err, loc->first_column, err_str, NULL);
1412                 return -EINVAL;
1413         }
1414
1415         parse_events_terms__init(&parsed_terms);
1416         if (const_parsed_terms) {
1417                 int ret = parse_events_terms__copy(const_parsed_terms, &parsed_terms);
1418
1419                 if (ret)
1420                         return ret;
1421         }
1422
1423         if (verbose > 1) {
1424                 struct strbuf sb;
1425
1426                 strbuf_init(&sb, /*hint=*/ 0);
1427                 if (pmu->selectable && list_empty(&parsed_terms.terms)) {
1428                         strbuf_addf(&sb, "%s//", name);
1429                 } else {
1430                         strbuf_addf(&sb, "%s/", name);
1431                         parse_events_terms__to_strbuf(&parsed_terms, &sb);
1432                         strbuf_addch(&sb, '/');
1433                 }
1434                 fprintf(stderr, "Attempt to add: %s\n", sb.buf);
1435                 strbuf_release(&sb);
1436         }
1437         fix_raw(&parsed_terms, pmu);
1438
1439         memset(&attr, 0, sizeof(attr));
1440         if (pmu->perf_event_attr_init_default)
1441                 pmu->perf_event_attr_init_default(pmu, &attr);
1442
1443         attr.type = pmu->type;
1444
1445         if (list_empty(&parsed_terms.terms)) {
1446                 evsel = __add_event(list, &parse_state->idx, &attr,
1447                                     /*init_attr=*/true, /*name=*/NULL,
1448                                     /*metric_id=*/NULL, pmu,
1449                                     /*config_terms=*/NULL, auto_merge_stats,
1450                                     /*cpu_list=*/NULL);
1451                 return evsel ? 0 : -ENOMEM;
1452         }
1453
1454         /* Configure attr/terms with a known PMU, this will set hardcoded terms. */
1455         if (config_attr(&attr, &parsed_terms, parse_state->error, config_term_pmu)) {
1456                 parse_events_terms__exit(&parsed_terms);
1457                 return -EINVAL;
1458         }
1459
1460         /* Look for event names in the terms and rewrite into format based terms. */
1461         if (!parse_state->fake_pmu && perf_pmu__check_alias(pmu, &parsed_terms,
1462                                                             &info, &alias_rewrote_terms, err)) {
1463                 parse_events_terms__exit(&parsed_terms);
1464                 return -EINVAL;
1465         }
1466
1467         if (verbose > 1) {
1468                 struct strbuf sb;
1469
1470                 strbuf_init(&sb, /*hint=*/ 0);
1471                 parse_events_terms__to_strbuf(&parsed_terms, &sb);
1472                 fprintf(stderr, "..after resolving event: %s/%s/\n", name, sb.buf);
1473                 strbuf_release(&sb);
1474         }
1475
1476         /* Configure attr/terms again if an alias was expanded. */
1477         if (alias_rewrote_terms &&
1478             config_attr(&attr, &parsed_terms, parse_state->error, config_term_pmu)) {
1479                 parse_events_terms__exit(&parsed_terms);
1480                 return -EINVAL;
1481         }
1482
1483         if (get_config_terms(&parsed_terms, &config_terms)) {
1484                 parse_events_terms__exit(&parsed_terms);
1485                 return -ENOMEM;
1486         }
1487
1488         /*
1489          * When using default config, record which bits of attr->config were
1490          * changed by the user.
1491          */
1492         if (pmu->perf_event_attr_init_default &&
1493             get_config_chgs(pmu, &parsed_terms, &config_terms)) {
1494                 parse_events_terms__exit(&parsed_terms);
1495                 return -ENOMEM;
1496         }
1497
1498         if (!parse_state->fake_pmu &&
1499             perf_pmu__config(pmu, &attr, &parsed_terms, parse_state->error)) {
1500                 free_config_terms(&config_terms);
1501                 parse_events_terms__exit(&parsed_terms);
1502                 return -EINVAL;
1503         }
1504
1505         evsel = __add_event(list, &parse_state->idx, &attr, /*init_attr=*/true,
1506                             get_config_name(&parsed_terms),
1507                             get_config_metric_id(&parsed_terms), pmu,
1508                             &config_terms, auto_merge_stats, /*cpu_list=*/NULL);
1509         if (!evsel) {
1510                 parse_events_terms__exit(&parsed_terms);
1511                 return -ENOMEM;
1512         }
1513
1514         if (evsel->name)
1515                 evsel->use_config_name = true;
1516
1517         evsel->percore = config_term_percore(&evsel->config_terms);
1518
1519         if (parse_state->fake_pmu) {
1520                 parse_events_terms__exit(&parsed_terms);
1521                 return 0;
1522         }
1523
1524         parse_events_terms__exit(&parsed_terms);
1525         free((char *)evsel->unit);
1526         evsel->unit = strdup(info.unit);
1527         evsel->scale = info.scale;
1528         evsel->per_pkg = info.per_pkg;
1529         evsel->snapshot = info.snapshot;
1530         return 0;
1531 }
1532
1533 int parse_events_multi_pmu_add(struct parse_events_state *parse_state,
1534                                const char *event_name,
1535                                const struct parse_events_terms *const_parsed_terms,
1536                                struct list_head **listp, void *loc_)
1537 {
1538         struct parse_events_term *term;
1539         struct list_head *list = NULL;
1540         struct perf_pmu *pmu = NULL;
1541         YYLTYPE *loc = loc_;
1542         int ok = 0;
1543         const char *config;
1544         struct parse_events_terms parsed_terms;
1545
1546         *listp = NULL;
1547
1548         parse_events_terms__init(&parsed_terms);
1549         if (const_parsed_terms) {
1550                 int ret = parse_events_terms__copy(const_parsed_terms, &parsed_terms);
1551
1552                 if (ret)
1553                         return ret;
1554         }
1555
1556         config = strdup(event_name);
1557         if (!config)
1558                 goto out_err;
1559
1560         if (parse_events_term__num(&term,
1561                                    PARSE_EVENTS__TERM_TYPE_USER,
1562                                    config, /*num=*/1, /*novalue=*/true,
1563                                    loc, /*loc_val=*/NULL) < 0) {
1564                 zfree(&config);
1565                 goto out_err;
1566         }
1567         list_add_tail(&term->list, &parsed_terms.terms);
1568
1569         /* Add it for all PMUs that support the alias */
1570         list = malloc(sizeof(struct list_head));
1571         if (!list)
1572                 goto out_err;
1573
1574         INIT_LIST_HEAD(list);
1575
1576         while ((pmu = perf_pmus__scan(pmu)) != NULL) {
1577                 bool auto_merge_stats;
1578
1579                 if (parse_events__filter_pmu(parse_state, pmu))
1580                         continue;
1581
1582                 if (!perf_pmu__have_event(pmu, event_name))
1583                         continue;
1584
1585                 auto_merge_stats = perf_pmu__auto_merge_stats(pmu);
1586                 if (!parse_events_add_pmu(parse_state, list, pmu->name,
1587                                           &parsed_terms, auto_merge_stats, loc)) {
1588                         struct strbuf sb;
1589
1590                         strbuf_init(&sb, /*hint=*/ 0);
1591                         parse_events_terms__to_strbuf(&parsed_terms, &sb);
1592                         pr_debug("%s -> %s/%s/\n", event_name, pmu->name, sb.buf);
1593                         strbuf_release(&sb);
1594                         ok++;
1595                 }
1596         }
1597
1598         if (parse_state->fake_pmu) {
1599                 if (!parse_events_add_pmu(parse_state, list, event_name, &parsed_terms,
1600                                           /*auto_merge_stats=*/true, loc)) {
1601                         struct strbuf sb;
1602
1603                         strbuf_init(&sb, /*hint=*/ 0);
1604                         parse_events_terms__to_strbuf(&parsed_terms, &sb);
1605                         pr_debug("%s -> %s/%s/\n", event_name, "fake_pmu", sb.buf);
1606                         strbuf_release(&sb);
1607                         ok++;
1608                 }
1609         }
1610
1611 out_err:
1612         parse_events_terms__exit(&parsed_terms);
1613         if (ok)
1614                 *listp = list;
1615         else
1616                 free(list);
1617
1618         return ok ? 0 : -1;
1619 }
1620
1621 int parse_events__modifier_group(struct list_head *list,
1622                                  char *event_mod)
1623 {
1624         return parse_events__modifier_event(list, event_mod, true);
1625 }
1626
1627 void parse_events__set_leader(char *name, struct list_head *list)
1628 {
1629         struct evsel *leader;
1630
1631         if (list_empty(list)) {
1632                 WARN_ONCE(true, "WARNING: failed to set leader: empty list");
1633                 return;
1634         }
1635
1636         leader = list_first_entry(list, struct evsel, core.node);
1637         __perf_evlist__set_leader(list, &leader->core);
1638         leader->group_name = name;
1639 }
1640
1641 /* list_event is assumed to point to malloc'ed memory */
1642 void parse_events_update_lists(struct list_head *list_event,
1643                                struct list_head *list_all)
1644 {
1645         /*
1646          * Called for single event definition. Update the
1647          * 'all event' list, and reinit the 'single event'
1648          * list, for next event definition.
1649          */
1650         list_splice_tail(list_event, list_all);
1651         free(list_event);
1652 }
1653
1654 struct event_modifier {
1655         int eu;
1656         int ek;
1657         int eh;
1658         int eH;
1659         int eG;
1660         int eI;
1661         int precise;
1662         int precise_max;
1663         int exclude_GH;
1664         int sample_read;
1665         int pinned;
1666         int weak;
1667         int exclusive;
1668         int bpf_counter;
1669 };
1670
1671 static int get_event_modifier(struct event_modifier *mod, char *str,
1672                                struct evsel *evsel)
1673 {
1674         int eu = evsel ? evsel->core.attr.exclude_user : 0;
1675         int ek = evsel ? evsel->core.attr.exclude_kernel : 0;
1676         int eh = evsel ? evsel->core.attr.exclude_hv : 0;
1677         int eH = evsel ? evsel->core.attr.exclude_host : 0;
1678         int eG = evsel ? evsel->core.attr.exclude_guest : 0;
1679         int eI = evsel ? evsel->core.attr.exclude_idle : 0;
1680         int precise = evsel ? evsel->core.attr.precise_ip : 0;
1681         int precise_max = 0;
1682         int sample_read = 0;
1683         int pinned = evsel ? evsel->core.attr.pinned : 0;
1684         int exclusive = evsel ? evsel->core.attr.exclusive : 0;
1685
1686         int exclude = eu | ek | eh;
1687         int exclude_GH = evsel ? evsel->exclude_GH : 0;
1688         int weak = 0;
1689         int bpf_counter = 0;
1690
1691         memset(mod, 0, sizeof(*mod));
1692
1693         while (*str) {
1694                 if (*str == 'u') {
1695                         if (!exclude)
1696                                 exclude = eu = ek = eh = 1;
1697                         if (!exclude_GH && !perf_guest)
1698                                 eG = 1;
1699                         eu = 0;
1700                 } else if (*str == 'k') {
1701                         if (!exclude)
1702                                 exclude = eu = ek = eh = 1;
1703                         ek = 0;
1704                 } else if (*str == 'h') {
1705                         if (!exclude)
1706                                 exclude = eu = ek = eh = 1;
1707                         eh = 0;
1708                 } else if (*str == 'G') {
1709                         if (!exclude_GH)
1710                                 exclude_GH = eG = eH = 1;
1711                         eG = 0;
1712                 } else if (*str == 'H') {
1713                         if (!exclude_GH)
1714                                 exclude_GH = eG = eH = 1;
1715                         eH = 0;
1716                 } else if (*str == 'I') {
1717                         eI = 1;
1718                 } else if (*str == 'p') {
1719                         precise++;
1720                         /* use of precise requires exclude_guest */
1721                         if (!exclude_GH)
1722                                 eG = 1;
1723                 } else if (*str == 'P') {
1724                         precise_max = 1;
1725                 } else if (*str == 'S') {
1726                         sample_read = 1;
1727                 } else if (*str == 'D') {
1728                         pinned = 1;
1729                 } else if (*str == 'e') {
1730                         exclusive = 1;
1731                 } else if (*str == 'W') {
1732                         weak = 1;
1733                 } else if (*str == 'b') {
1734                         bpf_counter = 1;
1735                 } else
1736                         break;
1737
1738                 ++str;
1739         }
1740
1741         /*
1742          * precise ip:
1743          *
1744          *  0 - SAMPLE_IP can have arbitrary skid
1745          *  1 - SAMPLE_IP must have constant skid
1746          *  2 - SAMPLE_IP requested to have 0 skid
1747          *  3 - SAMPLE_IP must have 0 skid
1748          *
1749          *  See also PERF_RECORD_MISC_EXACT_IP
1750          */
1751         if (precise > 3)
1752                 return -EINVAL;
1753
1754         mod->eu = eu;
1755         mod->ek = ek;
1756         mod->eh = eh;
1757         mod->eH = eH;
1758         mod->eG = eG;
1759         mod->eI = eI;
1760         mod->precise = precise;
1761         mod->precise_max = precise_max;
1762         mod->exclude_GH = exclude_GH;
1763         mod->sample_read = sample_read;
1764         mod->pinned = pinned;
1765         mod->weak = weak;
1766         mod->bpf_counter = bpf_counter;
1767         mod->exclusive = exclusive;
1768
1769         return 0;
1770 }
1771
1772 /*
1773  * Basic modifier sanity check to validate it contains only one
1774  * instance of any modifier (apart from 'p') present.
1775  */
1776 static int check_modifier(char *str)
1777 {
1778         char *p = str;
1779
1780         /* The sizeof includes 0 byte as well. */
1781         if (strlen(str) > (sizeof("ukhGHpppPSDIWeb") - 1))
1782                 return -1;
1783
1784         while (*p) {
1785                 if (*p != 'p' && strchr(p + 1, *p))
1786                         return -1;
1787                 p++;
1788         }
1789
1790         return 0;
1791 }
1792
1793 int parse_events__modifier_event(struct list_head *list, char *str, bool add)
1794 {
1795         struct evsel *evsel;
1796         struct event_modifier mod;
1797
1798         if (str == NULL)
1799                 return 0;
1800
1801         if (check_modifier(str))
1802                 return -EINVAL;
1803
1804         if (!add && get_event_modifier(&mod, str, NULL))
1805                 return -EINVAL;
1806
1807         __evlist__for_each_entry(list, evsel) {
1808                 if (add && get_event_modifier(&mod, str, evsel))
1809                         return -EINVAL;
1810
1811                 evsel->core.attr.exclude_user   = mod.eu;
1812                 evsel->core.attr.exclude_kernel = mod.ek;
1813                 evsel->core.attr.exclude_hv     = mod.eh;
1814                 evsel->core.attr.precise_ip     = mod.precise;
1815                 evsel->core.attr.exclude_host   = mod.eH;
1816                 evsel->core.attr.exclude_guest  = mod.eG;
1817                 evsel->core.attr.exclude_idle   = mod.eI;
1818                 evsel->exclude_GH          = mod.exclude_GH;
1819                 evsel->sample_read         = mod.sample_read;
1820                 evsel->precise_max         = mod.precise_max;
1821                 evsel->weak_group          = mod.weak;
1822                 evsel->bpf_counter         = mod.bpf_counter;
1823
1824                 if (evsel__is_group_leader(evsel)) {
1825                         evsel->core.attr.pinned = mod.pinned;
1826                         evsel->core.attr.exclusive = mod.exclusive;
1827                 }
1828         }
1829
1830         return 0;
1831 }
1832
1833 int parse_events_name(struct list_head *list, const char *name)
1834 {
1835         struct evsel *evsel;
1836
1837         __evlist__for_each_entry(list, evsel) {
1838                 if (!evsel->name) {
1839                         evsel->name = strdup(name);
1840                         if (!evsel->name)
1841                                 return -ENOMEM;
1842                 }
1843         }
1844
1845         return 0;
1846 }
1847
1848 static int parse_events__scanner(const char *str,
1849                                  FILE *input,
1850                                  struct parse_events_state *parse_state)
1851 {
1852         YY_BUFFER_STATE buffer;
1853         void *scanner;
1854         int ret;
1855
1856         ret = parse_events_lex_init_extra(parse_state, &scanner);
1857         if (ret)
1858                 return ret;
1859
1860         if (str)
1861                 buffer = parse_events__scan_string(str, scanner);
1862         else
1863                 parse_events_set_in(input, scanner);
1864
1865 #ifdef PARSER_DEBUG
1866         parse_events_debug = 1;
1867         parse_events_set_debug(1, scanner);
1868 #endif
1869         ret = parse_events_parse(parse_state, scanner);
1870
1871         if (str) {
1872                 parse_events__flush_buffer(buffer, scanner);
1873                 parse_events__delete_buffer(buffer, scanner);
1874         }
1875         parse_events_lex_destroy(scanner);
1876         return ret;
1877 }
1878
1879 /*
1880  * parse event config string, return a list of event terms.
1881  */
1882 int parse_events_terms(struct parse_events_terms *terms, const char *str, FILE *input)
1883 {
1884         struct parse_events_state parse_state = {
1885                 .terms  = NULL,
1886                 .stoken = PE_START_TERMS,
1887         };
1888         int ret;
1889
1890         ret = parse_events__scanner(str, input, &parse_state);
1891         if (!ret)
1892                 list_splice(&parse_state.terms->terms, &terms->terms);
1893
1894         zfree(&parse_state.terms);
1895         return ret;
1896 }
1897
1898 static int evsel__compute_group_pmu_name(struct evsel *evsel,
1899                                           const struct list_head *head)
1900 {
1901         struct evsel *leader = evsel__leader(evsel);
1902         struct evsel *pos;
1903         const char *group_pmu_name;
1904         struct perf_pmu *pmu = evsel__find_pmu(evsel);
1905
1906         if (!pmu) {
1907                 /*
1908                  * For PERF_TYPE_HARDWARE and PERF_TYPE_HW_CACHE types the PMU
1909                  * is a core PMU, but in heterogeneous systems this is
1910                  * unknown. For now pick the first core PMU.
1911                  */
1912                 pmu = perf_pmus__scan_core(NULL);
1913         }
1914         if (!pmu) {
1915                 pr_debug("No PMU found for '%s'\n", evsel__name(evsel));
1916                 return -EINVAL;
1917         }
1918         group_pmu_name = pmu->name;
1919         /*
1920          * Software events may be in a group with other uncore PMU events. Use
1921          * the pmu_name of the first non-software event to avoid breaking the
1922          * software event out of the group.
1923          *
1924          * Aux event leaders, like intel_pt, expect a group with events from
1925          * other PMUs, so substitute the AUX event's PMU in this case.
1926          */
1927         if (perf_pmu__is_software(pmu) || evsel__is_aux_event(leader)) {
1928                 struct perf_pmu *leader_pmu = evsel__find_pmu(leader);
1929
1930                 if (!leader_pmu) {
1931                         /* As with determining pmu above. */
1932                         leader_pmu = perf_pmus__scan_core(NULL);
1933                 }
1934                 /*
1935                  * Starting with the leader, find the first event with a named
1936                  * non-software PMU. for_each_group_(member|evsel) isn't used as
1937                  * the list isn't yet sorted putting evsel's in the same group
1938                  * together.
1939                  */
1940                 if (leader_pmu && !perf_pmu__is_software(leader_pmu)) {
1941                         group_pmu_name = leader_pmu->name;
1942                 } else if (leader->core.nr_members > 1) {
1943                         list_for_each_entry(pos, head, core.node) {
1944                                 struct perf_pmu *pos_pmu;
1945
1946                                 if (pos == leader || evsel__leader(pos) != leader)
1947                                         continue;
1948                                 pos_pmu = evsel__find_pmu(pos);
1949                                 if (!pos_pmu) {
1950                                         /* As with determining pmu above. */
1951                                         pos_pmu = perf_pmus__scan_core(NULL);
1952                                 }
1953                                 if (pos_pmu && !perf_pmu__is_software(pos_pmu)) {
1954                                         group_pmu_name = pos_pmu->name;
1955                                         break;
1956                                 }
1957                         }
1958                 }
1959         }
1960         /* Assign the actual name taking care that the fake PMU lacks a name. */
1961         evsel->group_pmu_name = strdup(group_pmu_name ?: "fake");
1962         return evsel->group_pmu_name ? 0 : -ENOMEM;
1963 }
1964
1965 __weak int arch_evlist__cmp(const struct evsel *lhs, const struct evsel *rhs)
1966 {
1967         /* Order by insertion index. */
1968         return lhs->core.idx - rhs->core.idx;
1969 }
1970
1971 static int evlist__cmp(void *_fg_idx, const struct list_head *l, const struct list_head *r)
1972 {
1973         const struct perf_evsel *lhs_core = container_of(l, struct perf_evsel, node);
1974         const struct evsel *lhs = container_of(lhs_core, struct evsel, core);
1975         const struct perf_evsel *rhs_core = container_of(r, struct perf_evsel, node);
1976         const struct evsel *rhs = container_of(rhs_core, struct evsel, core);
1977         int *force_grouped_idx = _fg_idx;
1978         int lhs_sort_idx, rhs_sort_idx, ret;
1979         const char *lhs_pmu_name, *rhs_pmu_name;
1980         bool lhs_has_group, rhs_has_group;
1981
1982         /*
1983          * First sort by grouping/leader. Read the leader idx only if the evsel
1984          * is part of a group, by default ungrouped events will be sorted
1985          * relative to grouped events based on where the first ungrouped event
1986          * occurs. If both events don't have a group we want to fall-through to
1987          * the arch specific sorting, that can reorder and fix things like
1988          * Intel's topdown events.
1989          */
1990         if (lhs_core->leader != lhs_core || lhs_core->nr_members > 1) {
1991                 lhs_has_group = true;
1992                 lhs_sort_idx = lhs_core->leader->idx;
1993         } else {
1994                 lhs_has_group = false;
1995                 lhs_sort_idx = *force_grouped_idx != -1 && arch_evsel__must_be_in_group(lhs)
1996                         ? *force_grouped_idx
1997                         : lhs_core->idx;
1998         }
1999         if (rhs_core->leader != rhs_core || rhs_core->nr_members > 1) {
2000                 rhs_has_group = true;
2001                 rhs_sort_idx = rhs_core->leader->idx;
2002         } else {
2003                 rhs_has_group = false;
2004                 rhs_sort_idx = *force_grouped_idx != -1 && arch_evsel__must_be_in_group(rhs)
2005                         ? *force_grouped_idx
2006                         : rhs_core->idx;
2007         }
2008
2009         if (lhs_sort_idx != rhs_sort_idx)
2010                 return lhs_sort_idx - rhs_sort_idx;
2011
2012         /* Group by PMU if there is a group. Groups can't span PMUs. */
2013         if (lhs_has_group && rhs_has_group) {
2014                 lhs_pmu_name = lhs->group_pmu_name;
2015                 rhs_pmu_name = rhs->group_pmu_name;
2016                 ret = strcmp(lhs_pmu_name, rhs_pmu_name);
2017                 if (ret)
2018                         return ret;
2019         }
2020
2021         /* Architecture specific sorting. */
2022         return arch_evlist__cmp(lhs, rhs);
2023 }
2024
2025 static int parse_events__sort_events_and_fix_groups(struct list_head *list)
2026 {
2027         int idx = 0, force_grouped_idx = -1;
2028         struct evsel *pos, *cur_leader = NULL;
2029         struct perf_evsel *cur_leaders_grp = NULL;
2030         bool idx_changed = false, cur_leader_force_grouped = false;
2031         int orig_num_leaders = 0, num_leaders = 0;
2032         int ret;
2033
2034         /*
2035          * Compute index to insert ungrouped events at. Place them where the
2036          * first ungrouped event appears.
2037          */
2038         list_for_each_entry(pos, list, core.node) {
2039                 const struct evsel *pos_leader = evsel__leader(pos);
2040
2041                 ret = evsel__compute_group_pmu_name(pos, list);
2042                 if (ret)
2043                         return ret;
2044
2045                 if (pos == pos_leader)
2046                         orig_num_leaders++;
2047
2048                 /*
2049                  * Ensure indexes are sequential, in particular for multiple
2050                  * event lists being merged. The indexes are used to detect when
2051                  * the user order is modified.
2052                  */
2053                 pos->core.idx = idx++;
2054
2055                 /* Remember an index to sort all forced grouped events together to. */
2056                 if (force_grouped_idx == -1 && pos == pos_leader && pos->core.nr_members < 2 &&
2057                     arch_evsel__must_be_in_group(pos))
2058                         force_grouped_idx = pos->core.idx;
2059         }
2060
2061         /* Sort events. */
2062         list_sort(&force_grouped_idx, list, evlist__cmp);
2063
2064         /*
2065          * Recompute groups, splitting for PMUs and adding groups for events
2066          * that require them.
2067          */
2068         idx = 0;
2069         list_for_each_entry(pos, list, core.node) {
2070                 const struct evsel *pos_leader = evsel__leader(pos);
2071                 const char *pos_pmu_name = pos->group_pmu_name;
2072                 const char *cur_leader_pmu_name;
2073                 bool pos_force_grouped = force_grouped_idx != -1 &&
2074                         arch_evsel__must_be_in_group(pos);
2075
2076                 /* Reset index and nr_members. */
2077                 if (pos->core.idx != idx)
2078                         idx_changed = true;
2079                 pos->core.idx = idx++;
2080                 pos->core.nr_members = 0;
2081
2082                 /*
2083                  * Set the group leader respecting the given groupings and that
2084                  * groups can't span PMUs.
2085                  */
2086                 if (!cur_leader)
2087                         cur_leader = pos;
2088
2089                 cur_leader_pmu_name = cur_leader->group_pmu_name;
2090                 if ((cur_leaders_grp != pos->core.leader &&
2091                      (!pos_force_grouped || !cur_leader_force_grouped)) ||
2092                     strcmp(cur_leader_pmu_name, pos_pmu_name)) {
2093                         /* Event is for a different group/PMU than last. */
2094                         cur_leader = pos;
2095                         /*
2096                          * Remember the leader's group before it is overwritten,
2097                          * so that later events match as being in the same
2098                          * group.
2099                          */
2100                         cur_leaders_grp = pos->core.leader;
2101                         /*
2102                          * Avoid forcing events into groups with events that
2103                          * don't need to be in the group.
2104                          */
2105                         cur_leader_force_grouped = pos_force_grouped;
2106                 }
2107                 if (pos_leader != cur_leader) {
2108                         /* The leader changed so update it. */
2109                         evsel__set_leader(pos, cur_leader);
2110                 }
2111         }
2112         list_for_each_entry(pos, list, core.node) {
2113                 struct evsel *pos_leader = evsel__leader(pos);
2114
2115                 if (pos == pos_leader)
2116                         num_leaders++;
2117                 pos_leader->core.nr_members++;
2118         }
2119         return (idx_changed || num_leaders != orig_num_leaders) ? 1 : 0;
2120 }
2121
2122 int __parse_events(struct evlist *evlist, const char *str, const char *pmu_filter,
2123                    struct parse_events_error *err, struct perf_pmu *fake_pmu,
2124                    bool warn_if_reordered)
2125 {
2126         struct parse_events_state parse_state = {
2127                 .list     = LIST_HEAD_INIT(parse_state.list),
2128                 .idx      = evlist->core.nr_entries,
2129                 .error    = err,
2130                 .stoken   = PE_START_EVENTS,
2131                 .fake_pmu = fake_pmu,
2132                 .pmu_filter = pmu_filter,
2133                 .match_legacy_cache_terms = true,
2134         };
2135         int ret, ret2;
2136
2137         ret = parse_events__scanner(str, /*input=*/ NULL, &parse_state);
2138
2139         if (!ret && list_empty(&parse_state.list)) {
2140                 WARN_ONCE(true, "WARNING: event parser found nothing\n");
2141                 return -1;
2142         }
2143
2144         ret2 = parse_events__sort_events_and_fix_groups(&parse_state.list);
2145         if (ret2 < 0)
2146                 return ret;
2147
2148         if (ret2 && warn_if_reordered && !parse_state.wild_card_pmus)
2149                 pr_warning("WARNING: events were regrouped to match PMUs\n");
2150
2151         /*
2152          * Add list to the evlist even with errors to allow callers to clean up.
2153          */
2154         evlist__splice_list_tail(evlist, &parse_state.list);
2155
2156         if (!ret) {
2157                 struct evsel *last;
2158
2159                 last = evlist__last(evlist);
2160                 last->cmdline_group_boundary = true;
2161
2162                 return 0;
2163         }
2164
2165         /*
2166          * There are 2 users - builtin-record and builtin-test objects.
2167          * Both call evlist__delete in case of error, so we dont
2168          * need to bother.
2169          */
2170         return ret;
2171 }
2172
2173 int parse_event(struct evlist *evlist, const char *str)
2174 {
2175         struct parse_events_error err;
2176         int ret;
2177
2178         parse_events_error__init(&err);
2179         ret = parse_events(evlist, str, &err);
2180         parse_events_error__exit(&err);
2181         return ret;
2182 }
2183
2184 struct parse_events_error_entry {
2185         /** @list: The list the error is part of. */
2186         struct list_head list;
2187         /** @idx: index in the parsed string */
2188         int   idx;
2189         /** @str: string to display at the index */
2190         char *str;
2191         /** @help: optional help string */
2192         char *help;
2193 };
2194
2195 void parse_events_error__init(struct parse_events_error *err)
2196 {
2197         INIT_LIST_HEAD(&err->list);
2198 }
2199
2200 void parse_events_error__exit(struct parse_events_error *err)
2201 {
2202         struct parse_events_error_entry *pos, *tmp;
2203
2204         list_for_each_entry_safe(pos, tmp, &err->list, list) {
2205                 zfree(&pos->str);
2206                 zfree(&pos->help);
2207                 list_del_init(&pos->list);
2208                 free(pos);
2209         }
2210 }
2211
2212 void parse_events_error__handle(struct parse_events_error *err, int idx,
2213                                 char *str, char *help)
2214 {
2215         struct parse_events_error_entry *entry;
2216
2217         if (WARN(!str || !err, "WARNING: failed to provide error string or struct\n"))
2218                 goto out_free;
2219
2220         entry = zalloc(sizeof(*entry));
2221         if (!entry) {
2222                 pr_err("Failed to allocate memory for event parsing error: %s (%s)\n",
2223                         str, help ?: "<no help>");
2224                 goto out_free;
2225         }
2226         entry->idx = idx;
2227         entry->str = str;
2228         entry->help = help;
2229         list_add(&entry->list, &err->list);
2230         return;
2231 out_free:
2232         free(str);
2233         free(help);
2234 }
2235
2236 #define MAX_WIDTH 1000
2237 static int get_term_width(void)
2238 {
2239         struct winsize ws;
2240
2241         get_term_dimensions(&ws);
2242         return ws.ws_col > MAX_WIDTH ? MAX_WIDTH : ws.ws_col;
2243 }
2244
2245 static void __parse_events_error__print(int err_idx, const char *err_str,
2246                                         const char *err_help, const char *event)
2247 {
2248         const char *str = "invalid or unsupported event: ";
2249         char _buf[MAX_WIDTH];
2250         char *buf = (char *) event;
2251         int idx = 0;
2252         if (err_str) {
2253                 /* -2 for extra '' in the final fprintf */
2254                 int width       = get_term_width() - 2;
2255                 int len_event   = strlen(event);
2256                 int len_str, max_len, cut = 0;
2257
2258                 /*
2259                  * Maximum error index indent, we will cut
2260                  * the event string if it's bigger.
2261                  */
2262                 int max_err_idx = 13;
2263
2264                 /*
2265                  * Let's be specific with the message when
2266                  * we have the precise error.
2267                  */
2268                 str     = "event syntax error: ";
2269                 len_str = strlen(str);
2270                 max_len = width - len_str;
2271
2272                 buf = _buf;
2273
2274                 /* We're cutting from the beginning. */
2275                 if (err_idx > max_err_idx)
2276                         cut = err_idx - max_err_idx;
2277
2278                 strncpy(buf, event + cut, max_len);
2279
2280                 /* Mark cut parts with '..' on both sides. */
2281                 if (cut)
2282                         buf[0] = buf[1] = '.';
2283
2284                 if ((len_event - cut) > max_len) {
2285                         buf[max_len - 1] = buf[max_len - 2] = '.';
2286                         buf[max_len] = 0;
2287                 }
2288
2289                 idx = len_str + err_idx - cut;
2290         }
2291
2292         fprintf(stderr, "%s'%s'\n", str, buf);
2293         if (idx) {
2294                 fprintf(stderr, "%*s\\___ %s\n", idx + 1, "", err_str);
2295                 if (err_help)
2296                         fprintf(stderr, "\n%s\n", err_help);
2297         }
2298 }
2299
2300 void parse_events_error__print(const struct parse_events_error *err,
2301                                const char *event)
2302 {
2303         struct parse_events_error_entry *pos;
2304         bool first = true;
2305
2306         list_for_each_entry(pos, &err->list, list) {
2307                 if (!first)
2308                         fputs("\n", stderr);
2309                 __parse_events_error__print(pos->idx, pos->str, pos->help, event);
2310                 first = false;
2311         }
2312 }
2313
2314 /*
2315  * In the list of errors err, do any of the error strings (str) contain the
2316  * given needle string?
2317  */
2318 bool parse_events_error__contains(const struct parse_events_error *err,
2319                                   const char *needle)
2320 {
2321         struct parse_events_error_entry *pos;
2322
2323         list_for_each_entry(pos, &err->list, list) {
2324                 if (strstr(pos->str, needle) != NULL)
2325                         return true;
2326         }
2327         return false;
2328 }
2329
2330 #undef MAX_WIDTH
2331
2332 int parse_events_option(const struct option *opt, const char *str,
2333                         int unset __maybe_unused)
2334 {
2335         struct parse_events_option_args *args = opt->value;
2336         struct parse_events_error err;
2337         int ret;
2338
2339         parse_events_error__init(&err);
2340         ret = __parse_events(*args->evlistp, str, args->pmu_filter, &err,
2341                              /*fake_pmu=*/NULL, /*warn_if_reordered=*/true);
2342
2343         if (ret) {
2344                 parse_events_error__print(&err, str);
2345                 fprintf(stderr, "Run 'perf list' for a list of valid events\n");
2346         }
2347         parse_events_error__exit(&err);
2348
2349         return ret;
2350 }
2351
2352 int parse_events_option_new_evlist(const struct option *opt, const char *str, int unset)
2353 {
2354         struct parse_events_option_args *args = opt->value;
2355         int ret;
2356
2357         if (*args->evlistp == NULL) {
2358                 *args->evlistp = evlist__new();
2359
2360                 if (*args->evlistp == NULL) {
2361                         fprintf(stderr, "Not enough memory to create evlist\n");
2362                         return -1;
2363                 }
2364         }
2365         ret = parse_events_option(opt, str, unset);
2366         if (ret) {
2367                 evlist__delete(*args->evlistp);
2368                 *args->evlistp = NULL;
2369         }
2370
2371         return ret;
2372 }
2373
2374 static int
2375 foreach_evsel_in_last_glob(struct evlist *evlist,
2376                            int (*func)(struct evsel *evsel,
2377                                        const void *arg),
2378                            const void *arg)
2379 {
2380         struct evsel *last = NULL;
2381         int err;
2382
2383         /*
2384          * Don't return when list_empty, give func a chance to report
2385          * error when it found last == NULL.
2386          *
2387          * So no need to WARN here, let *func do this.
2388          */
2389         if (evlist->core.nr_entries > 0)
2390                 last = evlist__last(evlist);
2391
2392         do {
2393                 err = (*func)(last, arg);
2394                 if (err)
2395                         return -1;
2396                 if (!last)
2397                         return 0;
2398
2399                 if (last->core.node.prev == &evlist->core.entries)
2400                         return 0;
2401                 last = list_entry(last->core.node.prev, struct evsel, core.node);
2402         } while (!last->cmdline_group_boundary);
2403
2404         return 0;
2405 }
2406
2407 static int set_filter(struct evsel *evsel, const void *arg)
2408 {
2409         const char *str = arg;
2410         bool found = false;
2411         int nr_addr_filters = 0;
2412         struct perf_pmu *pmu = NULL;
2413
2414         if (evsel == NULL) {
2415                 fprintf(stderr,
2416                         "--filter option should follow a -e tracepoint or HW tracer option\n");
2417                 return -1;
2418         }
2419
2420         if (evsel->core.attr.type == PERF_TYPE_TRACEPOINT) {
2421                 if (evsel__append_tp_filter(evsel, str) < 0) {
2422                         fprintf(stderr,
2423                                 "not enough memory to hold filter string\n");
2424                         return -1;
2425                 }
2426
2427                 return 0;
2428         }
2429
2430         while ((pmu = perf_pmus__scan(pmu)) != NULL)
2431                 if (pmu->type == evsel->core.attr.type) {
2432                         found = true;
2433                         break;
2434                 }
2435
2436         if (found)
2437                 perf_pmu__scan_file(pmu, "nr_addr_filters",
2438                                     "%d", &nr_addr_filters);
2439
2440         if (!nr_addr_filters)
2441                 return perf_bpf_filter__parse(&evsel->bpf_filters, str);
2442
2443         if (evsel__append_addr_filter(evsel, str) < 0) {
2444                 fprintf(stderr,
2445                         "not enough memory to hold filter string\n");
2446                 return -1;
2447         }
2448
2449         return 0;
2450 }
2451
2452 int parse_filter(const struct option *opt, const char *str,
2453                  int unset __maybe_unused)
2454 {
2455         struct evlist *evlist = *(struct evlist **)opt->value;
2456
2457         return foreach_evsel_in_last_glob(evlist, set_filter,
2458                                           (const void *)str);
2459 }
2460
2461 static int add_exclude_perf_filter(struct evsel *evsel,
2462                                    const void *arg __maybe_unused)
2463 {
2464         char new_filter[64];
2465
2466         if (evsel == NULL || evsel->core.attr.type != PERF_TYPE_TRACEPOINT) {
2467                 fprintf(stderr,
2468                         "--exclude-perf option should follow a -e tracepoint option\n");
2469                 return -1;
2470         }
2471
2472         snprintf(new_filter, sizeof(new_filter), "common_pid != %d", getpid());
2473
2474         if (evsel__append_tp_filter(evsel, new_filter) < 0) {
2475                 fprintf(stderr,
2476                         "not enough memory to hold filter string\n");
2477                 return -1;
2478         }
2479
2480         return 0;
2481 }
2482
2483 int exclude_perf(const struct option *opt,
2484                  const char *arg __maybe_unused,
2485                  int unset __maybe_unused)
2486 {
2487         struct evlist *evlist = *(struct evlist **)opt->value;
2488
2489         return foreach_evsel_in_last_glob(evlist, add_exclude_perf_filter,
2490                                           NULL);
2491 }
2492
2493 int parse_events__is_hardcoded_term(struct parse_events_term *term)
2494 {
2495         return term->type_term != PARSE_EVENTS__TERM_TYPE_USER;
2496 }
2497
2498 static int new_term(struct parse_events_term **_term,
2499                     struct parse_events_term *temp,
2500                     char *str, u64 num)
2501 {
2502         struct parse_events_term *term;
2503
2504         term = malloc(sizeof(*term));
2505         if (!term)
2506                 return -ENOMEM;
2507
2508         *term = *temp;
2509         INIT_LIST_HEAD(&term->list);
2510         term->weak = false;
2511
2512         switch (term->type_val) {
2513         case PARSE_EVENTS__TERM_TYPE_NUM:
2514                 term->val.num = num;
2515                 break;
2516         case PARSE_EVENTS__TERM_TYPE_STR:
2517                 term->val.str = str;
2518                 break;
2519         default:
2520                 free(term);
2521                 return -EINVAL;
2522         }
2523
2524         *_term = term;
2525         return 0;
2526 }
2527
2528 int parse_events_term__num(struct parse_events_term **term,
2529                            enum parse_events__term_type type_term,
2530                            const char *config, u64 num,
2531                            bool no_value,
2532                            void *loc_term_, void *loc_val_)
2533 {
2534         YYLTYPE *loc_term = loc_term_;
2535         YYLTYPE *loc_val = loc_val_;
2536
2537         struct parse_events_term temp = {
2538                 .type_val  = PARSE_EVENTS__TERM_TYPE_NUM,
2539                 .type_term = type_term,
2540                 .config    = config ? : strdup(config_term_name(type_term)),
2541                 .no_value  = no_value,
2542                 .err_term  = loc_term ? loc_term->first_column : 0,
2543                 .err_val   = loc_val  ? loc_val->first_column  : 0,
2544         };
2545
2546         return new_term(term, &temp, /*str=*/NULL, num);
2547 }
2548
2549 int parse_events_term__str(struct parse_events_term **term,
2550                            enum parse_events__term_type type_term,
2551                            char *config, char *str,
2552                            void *loc_term_, void *loc_val_)
2553 {
2554         YYLTYPE *loc_term = loc_term_;
2555         YYLTYPE *loc_val = loc_val_;
2556
2557         struct parse_events_term temp = {
2558                 .type_val  = PARSE_EVENTS__TERM_TYPE_STR,
2559                 .type_term = type_term,
2560                 .config    = config,
2561                 .err_term  = loc_term ? loc_term->first_column : 0,
2562                 .err_val   = loc_val  ? loc_val->first_column  : 0,
2563         };
2564
2565         return new_term(term, &temp, str, /*num=*/0);
2566 }
2567
2568 int parse_events_term__term(struct parse_events_term **term,
2569                             enum parse_events__term_type term_lhs,
2570                             enum parse_events__term_type term_rhs,
2571                             void *loc_term, void *loc_val)
2572 {
2573         return parse_events_term__str(term, term_lhs, NULL,
2574                                       strdup(config_term_name(term_rhs)),
2575                                       loc_term, loc_val);
2576 }
2577
2578 int parse_events_term__clone(struct parse_events_term **new,
2579                              struct parse_events_term *term)
2580 {
2581         char *str;
2582         struct parse_events_term temp = *term;
2583
2584         temp.used = false;
2585         if (term->config) {
2586                 temp.config = strdup(term->config);
2587                 if (!temp.config)
2588                         return -ENOMEM;
2589         }
2590         if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM)
2591                 return new_term(new, &temp, /*str=*/NULL, term->val.num);
2592
2593         str = strdup(term->val.str);
2594         if (!str) {
2595                 zfree(&temp.config);
2596                 return -ENOMEM;
2597         }
2598         return new_term(new, &temp, str, /*num=*/0);
2599 }
2600
2601 void parse_events_term__delete(struct parse_events_term *term)
2602 {
2603         if (term->type_val != PARSE_EVENTS__TERM_TYPE_NUM)
2604                 zfree(&term->val.str);
2605
2606         zfree(&term->config);
2607         free(term);
2608 }
2609
2610 static int parse_events_terms__copy(const struct parse_events_terms *src,
2611                                     struct parse_events_terms *dest)
2612 {
2613         struct parse_events_term *term;
2614
2615         list_for_each_entry (term, &src->terms, list) {
2616                 struct parse_events_term *n;
2617                 int ret;
2618
2619                 ret = parse_events_term__clone(&n, term);
2620                 if (ret)
2621                         return ret;
2622
2623                 list_add_tail(&n->list, &dest->terms);
2624         }
2625         return 0;
2626 }
2627
2628 void parse_events_terms__init(struct parse_events_terms *terms)
2629 {
2630         INIT_LIST_HEAD(&terms->terms);
2631 }
2632
2633 void parse_events_terms__exit(struct parse_events_terms *terms)
2634 {
2635         struct parse_events_term *term, *h;
2636
2637         list_for_each_entry_safe(term, h, &terms->terms, list) {
2638                 list_del_init(&term->list);
2639                 parse_events_term__delete(term);
2640         }
2641 }
2642
2643 void parse_events_terms__delete(struct parse_events_terms *terms)
2644 {
2645         if (!terms)
2646                 return;
2647         parse_events_terms__exit(terms);
2648         free(terms);
2649 }
2650
2651 int parse_events_terms__to_strbuf(const struct parse_events_terms *terms, struct strbuf *sb)
2652 {
2653         struct parse_events_term *term;
2654         bool first = true;
2655
2656         if (!terms)
2657                 return 0;
2658
2659         list_for_each_entry(term, &terms->terms, list) {
2660                 int ret;
2661
2662                 if (!first) {
2663                         ret = strbuf_addch(sb, ',');
2664                         if (ret < 0)
2665                                 return ret;
2666                 }
2667                 first = false;
2668
2669                 if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM)
2670                         if (term->no_value) {
2671                                 assert(term->val.num == 1);
2672                                 ret = strbuf_addf(sb, "%s", term->config);
2673                         } else
2674                                 ret = strbuf_addf(sb, "%s=%#"PRIx64, term->config, term->val.num);
2675                 else if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR) {
2676                         if (term->config) {
2677                                 ret = strbuf_addf(sb, "%s=", term->config);
2678                                 if (ret < 0)
2679                                         return ret;
2680                         } else if ((unsigned int)term->type_term < __PARSE_EVENTS__TERM_TYPE_NR) {
2681                                 ret = strbuf_addf(sb, "%s=", config_term_name(term->type_term));
2682                                 if (ret < 0)
2683                                         return ret;
2684                         }
2685                         assert(!term->no_value);
2686                         ret = strbuf_addf(sb, "%s", term->val.str);
2687                 }
2688                 if (ret < 0)
2689                         return ret;
2690         }
2691         return 0;
2692 }
2693
2694 void parse_events_evlist_error(struct parse_events_state *parse_state,
2695                                int idx, const char *str)
2696 {
2697         if (!parse_state->error)
2698                 return;
2699
2700         parse_events_error__handle(parse_state->error, idx, strdup(str), NULL);
2701 }
2702
2703 static void config_terms_list(char *buf, size_t buf_sz)
2704 {
2705         int i;
2706         bool first = true;
2707
2708         buf[0] = '\0';
2709         for (i = 0; i < __PARSE_EVENTS__TERM_TYPE_NR; i++) {
2710                 const char *name = config_term_name(i);
2711
2712                 if (!config_term_avail(i, NULL))
2713                         continue;
2714                 if (!name)
2715                         continue;
2716                 if (name[0] == '<')
2717                         continue;
2718
2719                 if (strlen(buf) + strlen(name) + 2 >= buf_sz)
2720                         return;
2721
2722                 if (!first)
2723                         strcat(buf, ",");
2724                 else
2725                         first = false;
2726                 strcat(buf, name);
2727         }
2728 }
2729
2730 /*
2731  * Return string contains valid config terms of an event.
2732  * @additional_terms: For terms such as PMU sysfs terms.
2733  */
2734 char *parse_events_formats_error_string(char *additional_terms)
2735 {
2736         char *str;
2737         /* "no-overwrite" is the longest name */
2738         char static_terms[__PARSE_EVENTS__TERM_TYPE_NR *
2739                           (sizeof("no-overwrite") - 1)];
2740
2741         config_terms_list(static_terms, sizeof(static_terms));
2742         /* valid terms */
2743         if (additional_terms) {
2744                 if (asprintf(&str, "valid terms: %s,%s",
2745                              additional_terms, static_terms) < 0)
2746                         goto fail;
2747         } else {
2748                 if (asprintf(&str, "valid terms: %s", static_terms) < 0)
2749                         goto fail;
2750         }
2751         return str;
2752
2753 fail:
2754         return NULL;
2755 }