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 static int get_config_terms(const struct parse_events_terms *head_config,
  35                             struct list_head *head_terms);
  36 static int parse_events_terms__copy(const struct parse_events_terms *src,
  37                                     struct parse_events_terms *dest);
  38
  39 const struct event_symbol event_symbols_hw[PERF_COUNT_HW_MAX] = {
  40         [PERF_COUNT_HW_CPU_CYCLES] = {
  41                 .symbol = "cpu-cycles",
  42                 .alias  = "cycles",
  43         },
  44         [PERF_COUNT_HW_INSTRUCTIONS] = {
  45                 .symbol = "instructions",
  46                 .alias  = "",
  47         },
  48         [PERF_COUNT_HW_CACHE_REFERENCES] = {
  49                 .symbol = "cache-references",
  50                 .alias  = "",
  51         },
  52         [PERF_COUNT_HW_CACHE_MISSES] = {
  53                 .symbol = "cache-misses",
  54                 .alias  = "",
  55         },
  56         [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = {
  57                 .symbol = "branch-instructions",
  58                 .alias  = "branches",
  59         },
  60         [PERF_COUNT_HW_BRANCH_MISSES] = {
  61                 .symbol = "branch-misses",
  62                 .alias  = "",
  63         },
  64         [PERF_COUNT_HW_BUS_CYCLES] = {
  65                 .symbol = "bus-cycles",
  66                 .alias  = "",
  67         },
  68         [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = {
  69                 .symbol = "stalled-cycles-frontend",
  70                 .alias  = "idle-cycles-frontend",
  71         },
  72         [PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = {
  73                 .symbol = "stalled-cycles-backend",
  74                 .alias  = "idle-cycles-backend",
  75         },
  76         [PERF_COUNT_HW_REF_CPU_CYCLES] = {
  77                 .symbol = "ref-cycles",
  78                 .alias  = "",
  79         },
  80 };
  81
  82 const struct event_symbol event_symbols_sw[PERF_COUNT_SW_MAX] = {
  83         [PERF_COUNT_SW_CPU_CLOCK] = {
  84                 .symbol = "cpu-clock",
  85                 .alias  = "",
  86         },
  87         [PERF_COUNT_SW_TASK_CLOCK] = {
  88                 .symbol = "task-clock",
  89                 .alias  = "",
  90         },
  91         [PERF_COUNT_SW_PAGE_FAULTS] = {
  92                 .symbol = "page-faults",
  93                 .alias  = "faults",
  94         },
  95         [PERF_COUNT_SW_CONTEXT_SWITCHES] = {
  96                 .symbol = "context-switches",
  97                 .alias  = "cs",
  98         },
  99         [PERF_COUNT_SW_CPU_MIGRATIONS] = {
 100                 .symbol = "cpu-migrations",
 101                 .alias  = "migrations",
 102         },
 103         [PERF_COUNT_SW_PAGE_FAULTS_MIN] = {
 104                 .symbol = "minor-faults",
 105                 .alias  = "",
 106         },
 107         [PERF_COUNT_SW_PAGE_FAULTS_MAJ] = {
 108                 .symbol = "major-faults",
 109                 .alias  = "",
 110         },
 111         [PERF_COUNT_SW_ALIGNMENT_FAULTS] = {
 112                 .symbol = "alignment-faults",
 113                 .alias  = "",
 114         },
 115         [PERF_COUNT_SW_EMULATION_FAULTS] = {
 116                 .symbol = "emulation-faults",
 117                 .alias  = "",
 118         },
 119         [PERF_COUNT_SW_DUMMY] = {
 120                 .symbol = "dummy",
 121                 .alias  = "",
 122         },
 123         [PERF_COUNT_SW_BPF_OUTPUT] = {
 124                 .symbol = "bpf-output",
 125                 .alias  = "",
 126         },
 127         [PERF_COUNT_SW_CGROUP_SWITCHES] = {
 128                 .symbol = "cgroup-switches",
 129                 .alias  = "",
 130         },
 131 };
 132
 133 const char *event_type(int type)
 134 {
 135         switch (type) {
 136         case PERF_TYPE_HARDWARE:
 137                 return "hardware";
 138
 139         case PERF_TYPE_SOFTWARE:
 140                 return "software";
 141
 142         case PERF_TYPE_TRACEPOINT:
 143                 return "tracepoint";
 144
 145         case PERF_TYPE_HW_CACHE:
 146                 return "hardware-cache";
 147
 148         default:
 149                 break;
 150         }
 151
 152         return "unknown";
 153 }
 154
 155 static char *get_config_str(const struct parse_events_terms *head_terms,
 156                             enum parse_events__term_type type_term)
 157 {
 158         struct parse_events_term *term;
 159
 160         if (!head_terms)
 161                 return NULL;
 162
 163         list_for_each_entry(term, &head_terms->terms, list)
 164                 if (term->type_term == type_term)
 165                         return term->val.str;
 166
 167         return NULL;
 168 }
 169
 170 static char *get_config_metric_id(const struct parse_events_terms *head_terms)
 171 {
 172         return get_config_str(head_terms, PARSE_EVENTS__TERM_TYPE_METRIC_ID);
 173 }
 174
 175 static char *get_config_name(const struct parse_events_terms *head_terms)
 176 {
 177         return get_config_str(head_terms, PARSE_EVENTS__TERM_TYPE_NAME);
 178 }
 179
 180 /**
 181  * fix_raw - For each raw term see if there is an event (aka alias) in pmu that
 182  *           matches the raw's string value. If the string value matches an
 183  *           event then change the term to be an event, if not then change it to
 184  *           be a config term. For example, "read" may be an event of the PMU or
 185  *           a raw hex encoding of 0xead. The fix-up is done late so the PMU of
 186  *           the event can be determined and we don't need to scan all PMUs
 187  *           ahead-of-time.
 188  * @config_terms: the list of terms that may contain a raw term.
 189  * @pmu: the PMU to scan for events from.
 190  */
 191 static void fix_raw(struct parse_events_terms *config_terms, struct perf_pmu *pmu)
 192 {
 193         struct parse_events_term *term;
 194
 195         list_for_each_entry(term, &config_terms->terms, list) {
 196                 u64 num;
 197
 198                 if (term->type_term != PARSE_EVENTS__TERM_TYPE_RAW)
 199                         continue;
 200
 201                 if (perf_pmu__have_event(pmu, term->val.str)) {
 202                         zfree(&term->config);
 203                         term->config = term->val.str;
 204                         term->type_val = PARSE_EVENTS__TERM_TYPE_NUM;
 205                         term->type_term = PARSE_EVENTS__TERM_TYPE_USER;
 206                         term->val.num = 1;
 207                         term->no_value = true;
 208                         continue;
 209                 }
 210
 211                 zfree(&term->config);
 212                 term->config = strdup("config");
 213                 errno = 0;
 214                 num = strtoull(term->val.str + 1, NULL, 16);
 215                 assert(errno == 0);
 216                 free(term->val.str);
 217                 term->type_val = PARSE_EVENTS__TERM_TYPE_NUM;
 218                 term->type_term = PARSE_EVENTS__TERM_TYPE_CONFIG;
 219                 term->val.num = num;
 220                 term->no_value = false;
 221         }
 222 }
 223
 224 static struct evsel *
 225 __add_event(struct list_head *list, int *idx,
 226             struct perf_event_attr *attr,
 227             bool init_attr,
 228             const char *name, const char *metric_id, struct perf_pmu *pmu,
 229             struct list_head *config_terms, bool auto_merge_stats,
 230             const char *cpu_list)
 231 {
 232         struct evsel *evsel;
 233         struct perf_cpu_map *cpus = pmu ? perf_cpu_map__get(pmu->cpus) :
 234                                cpu_list ? perf_cpu_map__new(cpu_list) : NULL;
 235
 236         if (pmu)
 237                 perf_pmu__warn_invalid_formats(pmu);
 238
 239         if (pmu && (attr->type == PERF_TYPE_RAW || attr->type >= PERF_TYPE_MAX)) {
 240                 perf_pmu__warn_invalid_config(pmu, attr->config, name,
 241                                               PERF_PMU_FORMAT_VALUE_CONFIG, "config");
 242                 perf_pmu__warn_invalid_config(pmu, attr->config1, name,
 243                                               PERF_PMU_FORMAT_VALUE_CONFIG1, "config1");
 244                 perf_pmu__warn_invalid_config(pmu, attr->config2, name,
 245                                               PERF_PMU_FORMAT_VALUE_CONFIG2, "config2");
 246                 perf_pmu__warn_invalid_config(pmu, attr->config3, name,
 247                                               PERF_PMU_FORMAT_VALUE_CONFIG3, "config3");
 248         }
 249         if (init_attr)
 250                 event_attr_init(attr);
 251
 252         evsel = evsel__new_idx(attr, *idx);
 253         if (!evsel) {
 254                 perf_cpu_map__put(cpus);
 255                 return NULL;
 256         }
 257
 258         (*idx)++;
 259         evsel->core.cpus = cpus;
 260         evsel->core.own_cpus = perf_cpu_map__get(cpus);
 261         evsel->core.requires_cpu = pmu ? pmu->is_uncore : false;
 262         evsel->core.is_pmu_core = pmu ? pmu->is_core : false;
 263         evsel->auto_merge_stats = auto_merge_stats;
 264         evsel->pmu = pmu;
 265         evsel->pmu_name = pmu ? strdup(pmu->name) : NULL;
 266
 267         if (name)
 268                 evsel->name = strdup(name);
 269
 270         if (metric_id)
 271                 evsel->metric_id = strdup(metric_id);
 272
 273         if (config_terms)
 274                 list_splice_init(config_terms, &evsel->config_terms);
 275
 276         if (list)
 277                 list_add_tail(&evsel->core.node, list);
 278
 279         return evsel;
 280 }
 281
 282 struct evsel *parse_events__add_event(int idx, struct perf_event_attr *attr,
 283                                       const char *name, const char *metric_id,
 284                                       struct perf_pmu *pmu)
 285 {
 286         return __add_event(/*list=*/NULL, &idx, attr, /*init_attr=*/false, name,
 287                            metric_id, pmu, /*config_terms=*/NULL,
 288                            /*auto_merge_stats=*/false, /*cpu_list=*/NULL);
 289 }
 290
 291 static int add_event(struct list_head *list, int *idx,
 292                      struct perf_event_attr *attr, const char *name,
 293                      const char *metric_id, struct list_head *config_terms)
 294 {
 295         return __add_event(list, idx, attr, /*init_attr*/true, name, metric_id,
 296                            /*pmu=*/NULL, config_terms,
 297                            /*auto_merge_stats=*/false, /*cpu_list=*/NULL) ? 0 : -ENOMEM;
 298 }
 299
 300 static int add_event_tool(struct list_head *list, int *idx,
 301                           enum perf_tool_event tool_event)
 302 {
 303         struct evsel *evsel;
 304         struct perf_event_attr attr = {
 305                 .type = PERF_TYPE_SOFTWARE,
 306                 .config = PERF_COUNT_SW_DUMMY,
 307         };
 308         const char *cpu_list = NULL;
 309
 310         if (tool_event == PERF_TOOL_DURATION_TIME) {
 311                 /* Duration time is gathered globally, pretend it is only on CPU0. */
 312                 cpu_list = "0";
 313         }
 314         evsel = __add_event(list, idx, &attr, /*init_attr=*/true, /*name=*/NULL,
 315                             /*metric_id=*/NULL, /*pmu=*/NULL,
 316                             /*config_terms=*/NULL, /*auto_merge_stats=*/false,
 317                             cpu_list);
 318         if (!evsel)
 319                 return -ENOMEM;
 320         evsel->tool_event = tool_event;
 321         if (tool_event == PERF_TOOL_DURATION_TIME
 322             || tool_event == PERF_TOOL_USER_TIME
 323             || tool_event == PERF_TOOL_SYSTEM_TIME) {
 324                 free((char *)evsel->unit);
 325                 evsel->unit = strdup("ns");
 326         }
 327         return 0;
 328 }
 329
 330 /**
 331  * parse_aliases - search names for entries beginning or equalling str ignoring
 332  *                 case. If mutliple entries in names match str then the longest
 333  *                 is chosen.
 334  * @str: The needle to look for.
 335  * @names: The haystack to search.
 336  * @size: The size of the haystack.
 337  * @longest: Out argument giving the length of the matching entry.
 338  */
 339 static int parse_aliases(const char *str, const char *const names[][EVSEL__MAX_ALIASES], int size,
 340                          int *longest)
 341 {
 342         *longest = -1;
 343         for (int i = 0; i < size; i++) {
 344                 for (int j = 0; j < EVSEL__MAX_ALIASES && names[i][j]; j++) {
 345                         int n = strlen(names[i][j]);
 346
 347                         if (n > *longest && !strncasecmp(str, names[i][j], n))
 348                                 *longest = n;
 349                 }
 350                 if (*longest > 0)
 351                         return i;
 352         }
 353
 354         return -1;
 355 }
 356
 357 typedef int config_term_func_t(struct perf_event_attr *attr,
 358                                struct parse_events_term *term,
 359                                struct parse_events_error *err);
 360 static int config_term_common(struct perf_event_attr *attr,
 361                               struct parse_events_term *term,
 362                               struct parse_events_error *err);
 363 static int config_attr(struct perf_event_attr *attr,
 364                        const struct parse_events_terms *head,
 365                        struct parse_events_error *err,
 366                        config_term_func_t config_term);
 367
 368 /**
 369  * parse_events__decode_legacy_cache - Search name for the legacy cache event
 370  *                                     name composed of 1, 2 or 3 hyphen
 371  *                                     separated sections. The first section is
 372  *                                     the cache type while the others are the
 373  *                                     optional op and optional result. To make
 374  *                                     life hard the names in the table also
 375  *                                     contain hyphens and the longest name
 376  *                                     should always be selected.
 377  */
 378 int parse_events__decode_legacy_cache(const char *name, int extended_pmu_type, __u64 *config)
 379 {
 380         int len, cache_type = -1, cache_op = -1, cache_result = -1;
 381         const char *name_end = &name[strlen(name) + 1];
 382         const char *str = name;
 383
 384         cache_type = parse_aliases(str, evsel__hw_cache, PERF_COUNT_HW_CACHE_MAX, &len);
 385         if (cache_type == -1)
 386                 return -EINVAL;
 387         str += len + 1;
 388
 389         if (str < name_end) {
 390                 cache_op = parse_aliases(str, evsel__hw_cache_op,
 391                                         PERF_COUNT_HW_CACHE_OP_MAX, &len);
 392                 if (cache_op >= 0) {
 393                         if (!evsel__is_cache_op_valid(cache_type, cache_op))
 394                                 return -EINVAL;
 395                         str += len + 1;
 396                 } else {
 397                         cache_result = parse_aliases(str, evsel__hw_cache_result,
 398                                                 PERF_COUNT_HW_CACHE_RESULT_MAX, &len);
 399                         if (cache_result >= 0)
 400                                 str += len + 1;
 401                 }
 402         }
 403         if (str < name_end) {
 404                 if (cache_op < 0) {
 405                         cache_op = parse_aliases(str, evsel__hw_cache_op,
 406                                                 PERF_COUNT_HW_CACHE_OP_MAX, &len);
 407                         if (cache_op >= 0) {
 408                                 if (!evsel__is_cache_op_valid(cache_type, cache_op))
 409                                         return -EINVAL;
 410                         }
 411                 } else if (cache_result < 0) {
 412                         cache_result = parse_aliases(str, evsel__hw_cache_result,
 413                                                 PERF_COUNT_HW_CACHE_RESULT_MAX, &len);
 414                 }
 415         }
 416
 417         /*
 418          * Fall back to reads:
 419          */
 420         if (cache_op == -1)
 421                 cache_op = PERF_COUNT_HW_CACHE_OP_READ;
 422
 423         /*
 424          * Fall back to accesses:
 425          */
 426         if (cache_result == -1)
 427                 cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS;
 428
 429         *config = cache_type | (cache_op << 8) | (cache_result << 16);
 430         if (perf_pmus__supports_extended_type())
 431                 *config |= (__u64)extended_pmu_type << PERF_PMU_TYPE_SHIFT;
 432         return 0;
 433 }
 434
 435 /**
 436  * parse_events__filter_pmu - returns false if a wildcard PMU should be
 437  *                            considered, true if it should be filtered.
 438  */
 439 bool parse_events__filter_pmu(const struct parse_events_state *parse_state,
 440                               const struct perf_pmu *pmu)
 441 {
 442         if (parse_state->pmu_filter == NULL)
 443                 return false;
 444
 445         return strcmp(parse_state->pmu_filter, pmu->name) != 0;
 446 }
 447
 448 static int parse_events_add_pmu(struct parse_events_state *parse_state,
 449                                 struct list_head *list, struct perf_pmu *pmu,
 450                                 const struct parse_events_terms *const_parsed_terms,
 451                                 bool auto_merge_stats);
 452
 453 int parse_events_add_cache(struct list_head *list, int *idx, const char *name,
 454                            struct parse_events_state *parse_state,
 455                            struct parse_events_terms *parsed_terms)
 456 {
 457         struct perf_pmu *pmu = NULL;
 458         bool found_supported = false;
 459         const char *config_name = get_config_name(parsed_terms);
 460         const char *metric_id = get_config_metric_id(parsed_terms);
 461
 462         while ((pmu = perf_pmus__scan(pmu)) != NULL) {
 463                 LIST_HEAD(config_terms);
 464                 struct perf_event_attr attr;
 465                 int ret;
 466
 467                 if (parse_events__filter_pmu(parse_state, pmu))
 468                         continue;
 469
 470                 if (perf_pmu__have_event(pmu, name)) {
 471                         /*
 472                          * The PMU has the event so add as not a legacy cache
 473                          * event.
 474                          */
 475                         ret = parse_events_add_pmu(parse_state, list, pmu,
 476                                                    parsed_terms,
 477                                                    perf_pmu__auto_merge_stats(pmu));
 478                         if (ret)
 479                                 return ret;
 480                         continue;
 481                 }
 482
 483                 if (!pmu->is_core) {
 484                         /* Legacy cache events are only supported by core PMUs. */
 485                         continue;
 486                 }
 487
 488                 memset(&attr, 0, sizeof(attr));
 489                 attr.type = PERF_TYPE_HW_CACHE;
 490
 491                 ret = parse_events__decode_legacy_cache(name, pmu->type, &attr.config);
 492                 if (ret)
 493                         return ret;
 494
 495                 found_supported = true;
 496
 497                 if (parsed_terms) {
 498                         if (config_attr(&attr, parsed_terms, parse_state->error,
 499                                         config_term_common))
 500                                 return -EINVAL;
 501
 502                         if (get_config_terms(parsed_terms, &config_terms))
 503                                 return -ENOMEM;
 504                 }
 505
 506                 if (__add_event(list, idx, &attr, /*init_attr*/true, config_name ?: name,
 507                                 metric_id, pmu, &config_terms, /*auto_merge_stats=*/false,
 508                                 /*cpu_list=*/NULL) == NULL)
 509                         return -ENOMEM;
 510
 511                 free_config_terms(&config_terms);
 512         }
 513         return found_supported ? 0 : -EINVAL;
 514 }
 515
 516 #ifdef HAVE_LIBTRACEEVENT
 517 static void tracepoint_error(struct parse_events_error *e, int err,
 518                              const char *sys, const char *name, int column)
 519 {
 520         const char *str;
 521         char help[BUFSIZ];
 522
 523         if (!e)
 524                 return;
 525
 526         /*
 527          * We get error directly from syscall errno ( > 0),
 528          * or from encoded pointer's error ( < 0).
 529          */
 530         err = abs(err);
 531
 532         switch (err) {
 533         case EACCES:
 534                 str = "can't access trace events";
 535                 break;
 536         case ENOENT:
 537                 str = "unknown tracepoint";
 538                 break;
 539         default:
 540                 str = "failed to add tracepoint";
 541                 break;
 542         }
 543
 544         tracing_path__strerror_open_tp(err, help, sizeof(help), sys, name);
 545         parse_events_error__handle(e, column, strdup(str), strdup(help));
 546 }
 547
 548 static int add_tracepoint(struct parse_events_state *parse_state,
 549                           struct list_head *list,
 550                           const char *sys_name, const char *evt_name,
 551                           struct parse_events_error *err,
 552                           struct parse_events_terms *head_config, void *loc_)
 553 {
 554         YYLTYPE *loc = loc_;
 555         struct evsel *evsel = evsel__newtp_idx(sys_name, evt_name, parse_state->idx++,
 556                                                !parse_state->fake_tp);
 557
 558         if (IS_ERR(evsel)) {
 559                 tracepoint_error(err, PTR_ERR(evsel), sys_name, evt_name, loc->first_column);
 560                 return PTR_ERR(evsel);
 561         }
 562
 563         if (head_config) {
 564                 LIST_HEAD(config_terms);
 565
 566                 if (get_config_terms(head_config, &config_terms))
 567                         return -ENOMEM;
 568                 list_splice(&config_terms, &evsel->config_terms);
 569         }
 570
 571         list_add_tail(&evsel->core.node, list);
 572         return 0;
 573 }
 574
 575 static int add_tracepoint_multi_event(struct parse_events_state *parse_state,
 576                                       struct list_head *list,
 577                                       const char *sys_name, const char *evt_name,
 578                                       struct parse_events_error *err,
 579                                       struct parse_events_terms *head_config, YYLTYPE *loc)
 580 {
 581         char *evt_path;
 582         struct dirent *evt_ent;
 583         DIR *evt_dir;
 584         int ret = 0, found = 0;
 585
 586         evt_path = get_events_file(sys_name);
 587         if (!evt_path) {
 588                 tracepoint_error(err, errno, sys_name, evt_name, loc->first_column);
 589                 return -1;
 590         }
 591         evt_dir = opendir(evt_path);
 592         if (!evt_dir) {
 593                 put_events_file(evt_path);
 594                 tracepoint_error(err, errno, sys_name, evt_name, loc->first_column);
 595                 return -1;
 596         }
 597
 598         while (!ret && (evt_ent = readdir(evt_dir))) {
 599                 if (!strcmp(evt_ent->d_name, ".")
 600                     || !strcmp(evt_ent->d_name, "..")
 601                     || !strcmp(evt_ent->d_name, "enable")
 602                     || !strcmp(evt_ent->d_name, "filter"))
 603                         continue;
 604
 605                 if (!strglobmatch(evt_ent->d_name, evt_name))
 606                         continue;
 607
 608                 found++;
 609
 610                 ret = add_tracepoint(parse_state, list, sys_name, evt_ent->d_name,
 611                                      err, head_config, loc);
 612         }
 613
 614         if (!found) {
 615                 tracepoint_error(err, ENOENT, sys_name, evt_name, loc->first_column);
 616                 ret = -1;
 617         }
 618
 619         put_events_file(evt_path);
 620         closedir(evt_dir);
 621         return ret;
 622 }
 623
 624 static int add_tracepoint_event(struct parse_events_state *parse_state,
 625                                 struct list_head *list,
 626                                 const char *sys_name, const char *evt_name,
 627                                 struct parse_events_error *err,
 628                                 struct parse_events_terms *head_config, YYLTYPE *loc)
 629 {
 630         return strpbrk(evt_name, "*?") ?
 631                 add_tracepoint_multi_event(parse_state, list, sys_name, evt_name,
 632                                            err, head_config, loc) :
 633                 add_tracepoint(parse_state, list, sys_name, evt_name,
 634                                err, head_config, loc);
 635 }
 636
 637 static int add_tracepoint_multi_sys(struct parse_events_state *parse_state,
 638                                     struct list_head *list,
 639                                     const char *sys_name, const char *evt_name,
 640                                     struct parse_events_error *err,
 641                                     struct parse_events_terms *head_config, YYLTYPE *loc)
 642 {
 643         struct dirent *events_ent;
 644         DIR *events_dir;
 645         int ret = 0;
 646
 647         events_dir = tracing_events__opendir();
 648         if (!events_dir) {
 649                 tracepoint_error(err, errno, sys_name, evt_name, loc->first_column);
 650                 return -1;
 651         }
 652
 653         while (!ret && (events_ent = readdir(events_dir))) {
 654                 if (!strcmp(events_ent->d_name, ".")
 655                     || !strcmp(events_ent->d_name, "..")
 656                     || !strcmp(events_ent->d_name, "enable")
 657                     || !strcmp(events_ent->d_name, "header_event")
 658                     || !strcmp(events_ent->d_name, "header_page"))
 659                         continue;
 660
 661                 if (!strglobmatch(events_ent->d_name, sys_name))
 662                         continue;
 663
 664                 ret = add_tracepoint_event(parse_state, list, events_ent->d_name,
 665                                            evt_name, err, head_config, loc);
 666         }
 667
 668         closedir(events_dir);
 669         return ret;
 670 }
 671 #endif /* HAVE_LIBTRACEEVENT */
 672
 673 static int
 674 parse_breakpoint_type(const char *type, struct perf_event_attr *attr)
 675 {
 676         int i;
 677
 678         for (i = 0; i < 3; i++) {
 679                 if (!type || !type[i])
 680                         break;
 681
 682 #define CHECK_SET_TYPE(bit)             \
 683 do {                                    \
 684         if (attr->bp_type & bit)        \
 685                 return -EINVAL;         \
 686         else                            \
 687                 attr->bp_type |= bit;   \
 688 } while (0)
 689
 690                 switch (type[i]) {
 691                 case 'r':
 692                         CHECK_SET_TYPE(HW_BREAKPOINT_R);
 693                         break;
 694                 case 'w':
 695                         CHECK_SET_TYPE(HW_BREAKPOINT_W);
 696                         break;
 697                 case 'x':
 698                         CHECK_SET_TYPE(HW_BREAKPOINT_X);
 699                         break;
 700                 default:
 701                         return -EINVAL;
 702                 }
 703         }
 704
 705 #undef CHECK_SET_TYPE
 706
 707         if (!attr->bp_type) /* Default */
 708                 attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W;
 709
 710         return 0;
 711 }
 712
 713 int parse_events_add_breakpoint(struct parse_events_state *parse_state,
 714                                 struct list_head *list,
 715                                 u64 addr, char *type, u64 len,
 716                                 struct parse_events_terms *head_config)
 717 {
 718         struct perf_event_attr attr;
 719         LIST_HEAD(config_terms);
 720         const char *name;
 721
 722         memset(&attr, 0, sizeof(attr));
 723         attr.bp_addr = addr;
 724
 725         if (parse_breakpoint_type(type, &attr))
 726                 return -EINVAL;
 727
 728         /* Provide some defaults if len is not specified */
 729         if (!len) {
 730                 if (attr.bp_type == HW_BREAKPOINT_X)
 731                         len = sizeof(long);
 732                 else
 733                         len = HW_BREAKPOINT_LEN_4;
 734         }
 735
 736         attr.bp_len = len;
 737
 738         attr.type = PERF_TYPE_BREAKPOINT;
 739         attr.sample_period = 1;
 740
 741         if (head_config) {
 742                 if (config_attr(&attr, head_config, parse_state->error,
 743                                 config_term_common))
 744                         return -EINVAL;
 745
 746                 if (get_config_terms(head_config, &config_terms))
 747                         return -ENOMEM;
 748         }
 749
 750         name = get_config_name(head_config);
 751
 752         return add_event(list, &parse_state->idx, &attr, name, /*mertic_id=*/NULL,
 753                          &config_terms);
 754 }
 755
 756 static int check_type_val(struct parse_events_term *term,
 757                           struct parse_events_error *err,
 758                           enum parse_events__term_val_type type)
 759 {
 760         if (type == term->type_val)
 761                 return 0;
 762
 763         if (err) {
 764                 parse_events_error__handle(err, term->err_val,
 765                                         type == PARSE_EVENTS__TERM_TYPE_NUM
 766                                         ? strdup("expected numeric value")
 767                                         : strdup("expected string value"),
 768                                         NULL);
 769         }
 770         return -EINVAL;
 771 }
 772
 773 static bool config_term_shrinked;
 774
 775 static const char *config_term_name(enum parse_events__term_type term_type)
 776 {
 777         /*
 778          * Update according to parse-events.l
 779          */
 780         static const char *config_term_names[__PARSE_EVENTS__TERM_TYPE_NR] = {
 781                 [PARSE_EVENTS__TERM_TYPE_USER]                  = "<sysfs term>",
 782                 [PARSE_EVENTS__TERM_TYPE_CONFIG]                = "config",
 783                 [PARSE_EVENTS__TERM_TYPE_CONFIG1]               = "config1",
 784                 [PARSE_EVENTS__TERM_TYPE_CONFIG2]               = "config2",
 785                 [PARSE_EVENTS__TERM_TYPE_CONFIG3]               = "config3",
 786                 [PARSE_EVENTS__TERM_TYPE_NAME]                  = "name",
 787                 [PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD]         = "period",
 788                 [PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ]           = "freq",
 789                 [PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE]    = "branch_type",
 790                 [PARSE_EVENTS__TERM_TYPE_TIME]                  = "time",
 791                 [PARSE_EVENTS__TERM_TYPE_CALLGRAPH]             = "call-graph",
 792                 [PARSE_EVENTS__TERM_TYPE_STACKSIZE]             = "stack-size",
 793                 [PARSE_EVENTS__TERM_TYPE_NOINHERIT]             = "no-inherit",
 794                 [PARSE_EVENTS__TERM_TYPE_INHERIT]               = "inherit",
 795                 [PARSE_EVENTS__TERM_TYPE_MAX_STACK]             = "max-stack",
 796                 [PARSE_EVENTS__TERM_TYPE_MAX_EVENTS]            = "nr",
 797                 [PARSE_EVENTS__TERM_TYPE_OVERWRITE]             = "overwrite",
 798                 [PARSE_EVENTS__TERM_TYPE_NOOVERWRITE]           = "no-overwrite",
 799                 [PARSE_EVENTS__TERM_TYPE_DRV_CFG]               = "driver-config",
 800                 [PARSE_EVENTS__TERM_TYPE_PERCORE]               = "percore",
 801                 [PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT]            = "aux-output",
 802                 [PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE]       = "aux-sample-size",
 803                 [PARSE_EVENTS__TERM_TYPE_METRIC_ID]             = "metric-id",
 804                 [PARSE_EVENTS__TERM_TYPE_RAW]                   = "raw",
 805                 [PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE]          = "legacy-cache",
 806                 [PARSE_EVENTS__TERM_TYPE_HARDWARE]              = "hardware",
 807         };
 808         if ((unsigned int)term_type >= __PARSE_EVENTS__TERM_TYPE_NR)
 809                 return "unknown term";
 810
 811         return config_term_names[term_type];
 812 }
 813
 814 static bool
 815 config_term_avail(enum parse_events__term_type term_type, struct parse_events_error *err)
 816 {
 817         char *err_str;
 818
 819         if (term_type < 0 || term_type >= __PARSE_EVENTS__TERM_TYPE_NR) {
 820                 parse_events_error__handle(err, -1,
 821                                         strdup("Invalid term_type"), NULL);
 822                 return false;
 823         }
 824         if (!config_term_shrinked)
 825                 return true;
 826
 827         switch (term_type) {
 828         case PARSE_EVENTS__TERM_TYPE_CONFIG:
 829         case PARSE_EVENTS__TERM_TYPE_CONFIG1:
 830         case PARSE_EVENTS__TERM_TYPE_CONFIG2:
 831         case PARSE_EVENTS__TERM_TYPE_CONFIG3:
 832         case PARSE_EVENTS__TERM_TYPE_NAME:
 833         case PARSE_EVENTS__TERM_TYPE_METRIC_ID:
 834         case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
 835         case PARSE_EVENTS__TERM_TYPE_PERCORE:
 836                 return true;
 837         case PARSE_EVENTS__TERM_TYPE_USER:
 838         case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
 839         case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
 840         case PARSE_EVENTS__TERM_TYPE_TIME:
 841         case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
 842         case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
 843         case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
 844         case PARSE_EVENTS__TERM_TYPE_INHERIT:
 845         case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
 846         case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS:
 847         case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
 848         case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
 849         case PARSE_EVENTS__TERM_TYPE_DRV_CFG:
 850         case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT:
 851         case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE:
 852         case PARSE_EVENTS__TERM_TYPE_RAW:
 853         case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE:
 854         case PARSE_EVENTS__TERM_TYPE_HARDWARE:
 855         default:
 856                 if (!err)
 857                         return false;
 858
 859                 /* term_type is validated so indexing is safe */
 860                 if (asprintf(&err_str, "'%s' is not usable in 'perf stat'",
 861                              config_term_name(term_type)) >= 0)
 862                         parse_events_error__handle(err, -1, err_str, NULL);
 863                 return false;
 864         }
 865 }
 866
 867 void parse_events__shrink_config_terms(void)
 868 {
 869         config_term_shrinked = true;
 870 }
 871
 872 static int config_term_common(struct perf_event_attr *attr,
 873                               struct parse_events_term *term,
 874                               struct parse_events_error *err)
 875 {
 876 #define CHECK_TYPE_VAL(type)                                               \
 877 do {                                                                       \
 878         if (check_type_val(term, err, PARSE_EVENTS__TERM_TYPE_ ## type)) \
 879                 return -EINVAL;                                            \
 880 } while (0)
 881
 882         switch (term->type_term) {
 883         case PARSE_EVENTS__TERM_TYPE_CONFIG:
 884                 CHECK_TYPE_VAL(NUM);
 885                 attr->config = term->val.num;
 886                 break;
 887         case PARSE_EVENTS__TERM_TYPE_CONFIG1:
 888                 CHECK_TYPE_VAL(NUM);
 889                 attr->config1 = term->val.num;
 890                 break;
 891         case PARSE_EVENTS__TERM_TYPE_CONFIG2:
 892                 CHECK_TYPE_VAL(NUM);
 893                 attr->config2 = term->val.num;
 894                 break;
 895         case PARSE_EVENTS__TERM_TYPE_CONFIG3:
 896                 CHECK_TYPE_VAL(NUM);
 897                 attr->config3 = term->val.num;
 898                 break;
 899         case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
 900                 CHECK_TYPE_VAL(NUM);
 901                 break;
 902         case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
 903                 CHECK_TYPE_VAL(NUM);
 904                 break;
 905         case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
 906                 CHECK_TYPE_VAL(STR);
 907                 if (strcmp(term->val.str, "no") &&
 908                     parse_branch_str(term->val.str,
 909                                     &attr->branch_sample_type)) {
 910                         parse_events_error__handle(err, term->err_val,
 911                                         strdup("invalid branch sample type"),
 912                                         NULL);
 913                         return -EINVAL;
 914                 }
 915                 break;
 916         case PARSE_EVENTS__TERM_TYPE_TIME:
 917                 CHECK_TYPE_VAL(NUM);
 918                 if (term->val.num > 1) {
 919                         parse_events_error__handle(err, term->err_val,
 920                                                 strdup("expected 0 or 1"),
 921                                                 NULL);
 922                         return -EINVAL;
 923                 }
 924                 break;
 925         case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
 926                 CHECK_TYPE_VAL(STR);
 927                 break;
 928         case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
 929                 CHECK_TYPE_VAL(NUM);
 930                 break;
 931         case PARSE_EVENTS__TERM_TYPE_INHERIT:
 932                 CHECK_TYPE_VAL(NUM);
 933                 break;
 934         case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
 935                 CHECK_TYPE_VAL(NUM);
 936                 break;
 937         case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
 938                 CHECK_TYPE_VAL(NUM);
 939                 break;
 940         case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
 941                 CHECK_TYPE_VAL(NUM);
 942                 break;
 943         case PARSE_EVENTS__TERM_TYPE_NAME:
 944                 CHECK_TYPE_VAL(STR);
 945                 break;
 946         case PARSE_EVENTS__TERM_TYPE_METRIC_ID:
 947                 CHECK_TYPE_VAL(STR);
 948                 break;
 949         case PARSE_EVENTS__TERM_TYPE_RAW:
 950                 CHECK_TYPE_VAL(STR);
 951                 break;
 952         case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
 953                 CHECK_TYPE_VAL(NUM);
 954                 break;
 955         case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS:
 956                 CHECK_TYPE_VAL(NUM);
 957                 break;
 958         case PARSE_EVENTS__TERM_TYPE_PERCORE:
 959                 CHECK_TYPE_VAL(NUM);
 960                 if ((unsigned int)term->val.num > 1) {
 961                         parse_events_error__handle(err, term->err_val,
 962                                                 strdup("expected 0 or 1"),
 963                                                 NULL);
 964                         return -EINVAL;
 965                 }
 966                 break;
 967         case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT:
 968                 CHECK_TYPE_VAL(NUM);
 969                 break;
 970         case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE:
 971                 CHECK_TYPE_VAL(NUM);
 972                 if (term->val.num > UINT_MAX) {
 973                         parse_events_error__handle(err, term->err_val,
 974                                                 strdup("too big"),
 975                                                 NULL);
 976                         return -EINVAL;
 977                 }
 978                 break;
 979         case PARSE_EVENTS__TERM_TYPE_DRV_CFG:
 980         case PARSE_EVENTS__TERM_TYPE_USER:
 981         case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE:
 982         case PARSE_EVENTS__TERM_TYPE_HARDWARE:
 983         default:
 984                 parse_events_error__handle(err, term->err_term,
 985                                         strdup(config_term_name(term->type_term)),
 986                                         parse_events_formats_error_string(NULL));
 987                 return -EINVAL;
 988         }
 989
 990         /*
 991          * Check term availability after basic checking so
 992          * PARSE_EVENTS__TERM_TYPE_USER can be found and filtered.
 993          *
 994          * If check availability at the entry of this function,
 995          * user will see "'<sysfs term>' is not usable in 'perf stat'"
 996          * if an invalid config term is provided for legacy events
 997          * (for example, instructions/badterm/...), which is confusing.
 998          */
 999         if (!config_term_avail(term->type_term, err))
1000                 return -EINVAL;
1001         return 0;
1002 #undef CHECK_TYPE_VAL
1003 }
1004
1005 static int config_term_pmu(struct perf_event_attr *attr,
1006                            struct parse_events_term *term,
1007                            struct parse_events_error *err)
1008 {
1009         if (term->type_term == PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE) {
1010                 struct perf_pmu *pmu = perf_pmus__find_by_type(attr->type);
1011
1012                 if (!pmu) {
1013                         char *err_str;
1014
1015                         if (asprintf(&err_str, "Failed to find PMU for type %d", attr->type) >= 0)
1016                                 parse_events_error__handle(err, term->err_term,
1017                                                            err_str, /*help=*/NULL);
1018                         return -EINVAL;
1019                 }
1020                 /*
1021                  * Rewrite the PMU event to a legacy cache one unless the PMU
1022                  * doesn't support legacy cache events or the event is present
1023                  * within the PMU.
1024                  */
1025                 if (perf_pmu__supports_legacy_cache(pmu) &&
1026                     !perf_pmu__have_event(pmu, term->config)) {
1027                         attr->type = PERF_TYPE_HW_CACHE;
1028                         return parse_events__decode_legacy_cache(term->config, pmu->type,
1029                                                                  &attr->config);
1030                 } else {
1031                         term->type_term = PARSE_EVENTS__TERM_TYPE_USER;
1032                         term->no_value = true;
1033                 }
1034         }
1035         if (term->type_term == PARSE_EVENTS__TERM_TYPE_HARDWARE) {
1036                 struct perf_pmu *pmu = perf_pmus__find_by_type(attr->type);
1037
1038                 if (!pmu) {
1039                         char *err_str;
1040
1041                         if (asprintf(&err_str, "Failed to find PMU for type %d", attr->type) >= 0)
1042                                 parse_events_error__handle(err, term->err_term,
1043                                                            err_str, /*help=*/NULL);
1044                         return -EINVAL;
1045                 }
1046                 /*
1047                  * If the PMU has a sysfs or json event prefer it over
1048                  * legacy. ARM requires this.
1049                  */
1050                 if (perf_pmu__have_event(pmu, term->config)) {
1051                         term->type_term = PARSE_EVENTS__TERM_TYPE_USER;
1052                         term->no_value = true;
1053                 } else {
1054                         attr->type = PERF_TYPE_HARDWARE;
1055                         attr->config = term->val.num;
1056                         if (perf_pmus__supports_extended_type())
1057                                 attr->config |= (__u64)pmu->type << PERF_PMU_TYPE_SHIFT;
1058                 }
1059                 return 0;
1060         }
1061         if (term->type_term == PARSE_EVENTS__TERM_TYPE_USER ||
1062             term->type_term == PARSE_EVENTS__TERM_TYPE_DRV_CFG) {
1063                 /*
1064                  * Always succeed for sysfs terms, as we dont know
1065                  * at this point what type they need to have.
1066                  */
1067                 return 0;
1068         }
1069         return config_term_common(attr, term, err);
1070 }
1071
1072 #ifdef HAVE_LIBTRACEEVENT
1073 static int config_term_tracepoint(struct perf_event_attr *attr,
1074                                   struct parse_events_term *term,
1075                                   struct parse_events_error *err)
1076 {
1077         switch (term->type_term) {
1078         case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
1079         case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1080         case PARSE_EVENTS__TERM_TYPE_INHERIT:
1081         case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1082         case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1083         case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS:
1084         case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1085         case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1086         case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT:
1087         case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE:
1088                 return config_term_common(attr, term, err);
1089         case PARSE_EVENTS__TERM_TYPE_USER:
1090         case PARSE_EVENTS__TERM_TYPE_CONFIG:
1091         case PARSE_EVENTS__TERM_TYPE_CONFIG1:
1092         case PARSE_EVENTS__TERM_TYPE_CONFIG2:
1093         case PARSE_EVENTS__TERM_TYPE_CONFIG3:
1094         case PARSE_EVENTS__TERM_TYPE_NAME:
1095         case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
1096         case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
1097         case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
1098         case PARSE_EVENTS__TERM_TYPE_TIME:
1099         case PARSE_EVENTS__TERM_TYPE_DRV_CFG:
1100         case PARSE_EVENTS__TERM_TYPE_PERCORE:
1101         case PARSE_EVENTS__TERM_TYPE_METRIC_ID:
1102         case PARSE_EVENTS__TERM_TYPE_RAW:
1103         case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE:
1104         case PARSE_EVENTS__TERM_TYPE_HARDWARE:
1105         default:
1106                 if (err) {
1107                         parse_events_error__handle(err, term->err_term,
1108                                                    strdup(config_term_name(term->type_term)),
1109                                 strdup("valid terms: call-graph,stack-size\n"));
1110                 }
1111                 return -EINVAL;
1112         }
1113
1114         return 0;
1115 }
1116 #endif
1117
1118 static int config_attr(struct perf_event_attr *attr,
1119                        const struct parse_events_terms *head,
1120                        struct parse_events_error *err,
1121                        config_term_func_t config_term)
1122 {
1123         struct parse_events_term *term;
1124
1125         list_for_each_entry(term, &head->terms, list)
1126                 if (config_term(attr, term, err))
1127                         return -EINVAL;
1128
1129         return 0;
1130 }
1131
1132 static int get_config_terms(const struct parse_events_terms *head_config,
1133                             struct list_head *head_terms)
1134 {
1135 #define ADD_CONFIG_TERM(__type, __weak)                         \
1136         struct evsel_config_term *__t;                  \
1137                                                                 \
1138         __t = zalloc(sizeof(*__t));                             \
1139         if (!__t)                                               \
1140                 return -ENOMEM;                                 \
1141                                                                 \
1142         INIT_LIST_HEAD(&__t->list);                             \
1143         __t->type       = EVSEL__CONFIG_TERM_ ## __type;        \
1144         __t->weak       = __weak;                               \
1145         list_add_tail(&__t->list, head_terms)
1146
1147 #define ADD_CONFIG_TERM_VAL(__type, __name, __val, __weak)      \
1148 do {                                                            \
1149         ADD_CONFIG_TERM(__type, __weak);                        \
1150         __t->val.__name = __val;                                \
1151 } while (0)
1152
1153 #define ADD_CONFIG_TERM_STR(__type, __val, __weak)              \
1154 do {                                                            \
1155         ADD_CONFIG_TERM(__type, __weak);                        \
1156         __t->val.str = strdup(__val);                           \
1157         if (!__t->val.str) {                                    \
1158                 zfree(&__t);                                    \
1159                 return -ENOMEM;                                 \
1160         }                                                       \
1161         __t->free_str = true;                                   \
1162 } while (0)
1163
1164         struct parse_events_term *term;
1165
1166         list_for_each_entry(term, &head_config->terms, list) {
1167                 switch (term->type_term) {
1168                 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
1169                         ADD_CONFIG_TERM_VAL(PERIOD, period, term->val.num, term->weak);
1170                         break;
1171                 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
1172                         ADD_CONFIG_TERM_VAL(FREQ, freq, term->val.num, term->weak);
1173                         break;
1174                 case PARSE_EVENTS__TERM_TYPE_TIME:
1175                         ADD_CONFIG_TERM_VAL(TIME, time, term->val.num, term->weak);
1176                         break;
1177                 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
1178                         ADD_CONFIG_TERM_STR(CALLGRAPH, term->val.str, term->weak);
1179                         break;
1180                 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
1181                         ADD_CONFIG_TERM_STR(BRANCH, term->val.str, term->weak);
1182                         break;
1183                 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1184                         ADD_CONFIG_TERM_VAL(STACK_USER, stack_user,
1185                                             term->val.num, term->weak);
1186                         break;
1187                 case PARSE_EVENTS__TERM_TYPE_INHERIT:
1188                         ADD_CONFIG_TERM_VAL(INHERIT, inherit,
1189                                             term->val.num ? 1 : 0, term->weak);
1190                         break;
1191                 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1192                         ADD_CONFIG_TERM_VAL(INHERIT, inherit,
1193                                             term->val.num ? 0 : 1, term->weak);
1194                         break;
1195                 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1196                         ADD_CONFIG_TERM_VAL(MAX_STACK, max_stack,
1197                                             term->val.num, term->weak);
1198                         break;
1199                 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS:
1200                         ADD_CONFIG_TERM_VAL(MAX_EVENTS, max_events,
1201                                             term->val.num, term->weak);
1202                         break;
1203                 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1204                         ADD_CONFIG_TERM_VAL(OVERWRITE, overwrite,
1205                                             term->val.num ? 1 : 0, term->weak);
1206                         break;
1207                 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1208                         ADD_CONFIG_TERM_VAL(OVERWRITE, overwrite,
1209                                             term->val.num ? 0 : 1, term->weak);
1210                         break;
1211                 case PARSE_EVENTS__TERM_TYPE_DRV_CFG:
1212                         ADD_CONFIG_TERM_STR(DRV_CFG, term->val.str, term->weak);
1213                         break;
1214                 case PARSE_EVENTS__TERM_TYPE_PERCORE:
1215                         ADD_CONFIG_TERM_VAL(PERCORE, percore,
1216                                             term->val.num ? true : false, term->weak);
1217                         break;
1218                 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT:
1219                         ADD_CONFIG_TERM_VAL(AUX_OUTPUT, aux_output,
1220                                             term->val.num ? 1 : 0, term->weak);
1221                         break;
1222                 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE:
1223                         ADD_CONFIG_TERM_VAL(AUX_SAMPLE_SIZE, aux_sample_size,
1224                                             term->val.num, term->weak);
1225                         break;
1226                 case PARSE_EVENTS__TERM_TYPE_USER:
1227                 case PARSE_EVENTS__TERM_TYPE_CONFIG:
1228                 case PARSE_EVENTS__TERM_TYPE_CONFIG1:
1229                 case PARSE_EVENTS__TERM_TYPE_CONFIG2:
1230                 case PARSE_EVENTS__TERM_TYPE_CONFIG3:
1231                 case PARSE_EVENTS__TERM_TYPE_NAME:
1232                 case PARSE_EVENTS__TERM_TYPE_METRIC_ID:
1233                 case PARSE_EVENTS__TERM_TYPE_RAW:
1234                 case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE:
1235                 case PARSE_EVENTS__TERM_TYPE_HARDWARE:
1236                 default:
1237                         break;
1238                 }
1239         }
1240         return 0;
1241 }
1242
1243 /*
1244  * Add EVSEL__CONFIG_TERM_CFG_CHG where cfg_chg will have a bit set for
1245  * each bit of attr->config that the user has changed.
1246  */
1247 static int get_config_chgs(struct perf_pmu *pmu, struct parse_events_terms *head_config,
1248                            struct list_head *head_terms)
1249 {
1250         struct parse_events_term *term;
1251         u64 bits = 0;
1252         int type;
1253
1254         list_for_each_entry(term, &head_config->terms, list) {
1255                 switch (term->type_term) {
1256                 case PARSE_EVENTS__TERM_TYPE_USER:
1257                         type = perf_pmu__format_type(pmu, term->config);
1258                         if (type != PERF_PMU_FORMAT_VALUE_CONFIG)
1259                                 continue;
1260                         bits |= perf_pmu__format_bits(pmu, term->config);
1261                         break;
1262                 case PARSE_EVENTS__TERM_TYPE_CONFIG:
1263                         bits = ~(u64)0;
1264                         break;
1265                 case PARSE_EVENTS__TERM_TYPE_CONFIG1:
1266                 case PARSE_EVENTS__TERM_TYPE_CONFIG2:
1267                 case PARSE_EVENTS__TERM_TYPE_CONFIG3:
1268                 case PARSE_EVENTS__TERM_TYPE_NAME:
1269                 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
1270                 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
1271                 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
1272                 case PARSE_EVENTS__TERM_TYPE_TIME:
1273                 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
1274                 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1275                 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1276                 case PARSE_EVENTS__TERM_TYPE_INHERIT:
1277                 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1278                 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS:
1279                 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1280                 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1281                 case PARSE_EVENTS__TERM_TYPE_DRV_CFG:
1282                 case PARSE_EVENTS__TERM_TYPE_PERCORE:
1283                 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT:
1284                 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE:
1285                 case PARSE_EVENTS__TERM_TYPE_METRIC_ID:
1286                 case PARSE_EVENTS__TERM_TYPE_RAW:
1287                 case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE:
1288                 case PARSE_EVENTS__TERM_TYPE_HARDWARE:
1289                 default:
1290                         break;
1291                 }
1292         }
1293
1294         if (bits)
1295                 ADD_CONFIG_TERM_VAL(CFG_CHG, cfg_chg, bits, false);
1296
1297 #undef ADD_CONFIG_TERM
1298         return 0;
1299 }
1300
1301 int parse_events_add_tracepoint(struct parse_events_state *parse_state,
1302                                 struct list_head *list,
1303                                 const char *sys, const char *event,
1304                                 struct parse_events_error *err,
1305                                 struct parse_events_terms *head_config, void *loc_)
1306 {
1307         YYLTYPE *loc = loc_;
1308 #ifdef HAVE_LIBTRACEEVENT
1309         if (head_config) {
1310                 struct perf_event_attr attr;
1311
1312                 if (config_attr(&attr, head_config, err,
1313                                 config_term_tracepoint))
1314                         return -EINVAL;
1315         }
1316
1317         if (strpbrk(sys, "*?"))
1318                 return add_tracepoint_multi_sys(parse_state, list, sys, event,
1319                                                 err, head_config, loc);
1320         else
1321                 return add_tracepoint_event(parse_state, list, sys, event,
1322                                             err, head_config, loc);
1323 #else
1324         (void)parse_state;
1325         (void)list;
1326         (void)sys;
1327         (void)event;
1328         (void)head_config;
1329         parse_events_error__handle(err, loc->first_column, strdup("unsupported tracepoint"),
1330                                 strdup("libtraceevent is necessary for tracepoint support"));
1331         return -1;
1332 #endif
1333 }
1334
1335 static int __parse_events_add_numeric(struct parse_events_state *parse_state,
1336                                 struct list_head *list,
1337                                 struct perf_pmu *pmu, u32 type, u32 extended_type,
1338                                 u64 config, const struct parse_events_terms *head_config)
1339 {
1340         struct perf_event_attr attr;
1341         LIST_HEAD(config_terms);
1342         const char *name, *metric_id;
1343         int ret;
1344
1345         memset(&attr, 0, sizeof(attr));
1346         attr.type = type;
1347         attr.config = config;
1348         if (extended_type && (type == PERF_TYPE_HARDWARE || type == PERF_TYPE_HW_CACHE)) {
1349                 assert(perf_pmus__supports_extended_type());
1350                 attr.config |= (u64)extended_type << PERF_PMU_TYPE_SHIFT;
1351         }
1352
1353         if (head_config) {
1354                 if (config_attr(&attr, head_config, parse_state->error,
1355                                 config_term_common))
1356                         return -EINVAL;
1357
1358                 if (get_config_terms(head_config, &config_terms))
1359                         return -ENOMEM;
1360         }
1361
1362         name = get_config_name(head_config);
1363         metric_id = get_config_metric_id(head_config);
1364         ret = __add_event(list, &parse_state->idx, &attr, /*init_attr*/true, name,
1365                         metric_id, pmu, &config_terms, /*auto_merge_stats=*/false,
1366                         /*cpu_list=*/NULL) ? 0 : -ENOMEM;
1367         free_config_terms(&config_terms);
1368         return ret;
1369 }
1370
1371 int parse_events_add_numeric(struct parse_events_state *parse_state,
1372                              struct list_head *list,
1373                              u32 type, u64 config,
1374                              const struct parse_events_terms *head_config,
1375                              bool wildcard)
1376 {
1377         struct perf_pmu *pmu = NULL;
1378         bool found_supported = false;
1379
1380         /* Wildcards on numeric values are only supported by core PMUs. */
1381         if (wildcard && perf_pmus__supports_extended_type()) {
1382                 while ((pmu = perf_pmus__scan_core(pmu)) != NULL) {
1383                         int ret;
1384
1385                         found_supported = true;
1386                         if (parse_events__filter_pmu(parse_state, pmu))
1387                                 continue;
1388
1389                         ret = __parse_events_add_numeric(parse_state, list, pmu,
1390                                                          type, pmu->type,
1391                                                          config, head_config);
1392                         if (ret)
1393                                 return ret;
1394                 }
1395                 if (found_supported)
1396                         return 0;
1397         }
1398         return __parse_events_add_numeric(parse_state, list, perf_pmus__find_by_type(type),
1399                                         type, /*extended_type=*/0, config, head_config);
1400 }
1401
1402 int parse_events_add_tool(struct parse_events_state *parse_state,
1403                           struct list_head *list,
1404                           int tool_event)
1405 {
1406         return add_event_tool(list, &parse_state->idx, tool_event);
1407 }
1408
1409 static bool config_term_percore(struct list_head *config_terms)
1410 {
1411         struct evsel_config_term *term;
1412
1413         list_for_each_entry(term, config_terms, list) {
1414                 if (term->type == EVSEL__CONFIG_TERM_PERCORE)
1415                         return term->val.percore;
1416         }
1417
1418         return false;
1419 }
1420
1421 static int parse_events_add_pmu(struct parse_events_state *parse_state,
1422                                 struct list_head *list, struct perf_pmu *pmu,
1423                                 const struct parse_events_terms *const_parsed_terms,
1424                                 bool auto_merge_stats)
1425 {
1426         struct perf_event_attr attr;
1427         struct perf_pmu_info info;
1428         struct evsel *evsel;
1429         struct parse_events_error *err = parse_state->error;
1430         LIST_HEAD(config_terms);
1431         struct parse_events_terms parsed_terms;
1432         bool alias_rewrote_terms = false;
1433
1434         if (verbose > 1) {
1435                 struct strbuf sb;
1436
1437                 strbuf_init(&sb, /*hint=*/ 0);
1438                 if (pmu->selectable && const_parsed_terms &&
1439                     list_empty(&const_parsed_terms->terms)) {
1440                         strbuf_addf(&sb, "%s//", pmu->name);
1441                 } else {
1442                         strbuf_addf(&sb, "%s/", pmu->name);
1443                         parse_events_terms__to_strbuf(const_parsed_terms, &sb);
1444                         strbuf_addch(&sb, '/');
1445                 }
1446                 fprintf(stderr, "Attempt to add: %s\n", sb.buf);
1447                 strbuf_release(&sb);
1448         }
1449
1450         memset(&attr, 0, sizeof(attr));
1451         if (pmu->perf_event_attr_init_default)
1452                 pmu->perf_event_attr_init_default(pmu, &attr);
1453
1454         attr.type = pmu->type;
1455
1456         if (!const_parsed_terms || list_empty(&const_parsed_terms->terms)) {
1457                 evsel = __add_event(list, &parse_state->idx, &attr,
1458                                     /*init_attr=*/true, /*name=*/NULL,
1459                                     /*metric_id=*/NULL, pmu,
1460                                     /*config_terms=*/NULL, auto_merge_stats,
1461                                     /*cpu_list=*/NULL);
1462                 return evsel ? 0 : -ENOMEM;
1463         }
1464
1465         parse_events_terms__init(&parsed_terms);
1466         if (const_parsed_terms) {
1467                 int ret = parse_events_terms__copy(const_parsed_terms, &parsed_terms);
1468
1469                 if (ret)
1470                         return ret;
1471         }
1472         fix_raw(&parsed_terms, pmu);
1473
1474         /* Configure attr/terms with a known PMU, this will set hardcoded terms. */
1475         if (config_attr(&attr, &parsed_terms, parse_state->error, config_term_pmu)) {
1476                 parse_events_terms__exit(&parsed_terms);
1477                 return -EINVAL;
1478         }
1479
1480         /* Look for event names in the terms and rewrite into format based terms. */
1481         if (!parse_state->fake_pmu && perf_pmu__check_alias(pmu, &parsed_terms,
1482                                                             &info, &alias_rewrote_terms, err)) {
1483                 parse_events_terms__exit(&parsed_terms);
1484                 return -EINVAL;
1485         }
1486
1487         if (verbose > 1) {
1488                 struct strbuf sb;
1489
1490                 strbuf_init(&sb, /*hint=*/ 0);
1491                 parse_events_terms__to_strbuf(&parsed_terms, &sb);
1492                 fprintf(stderr, "..after resolving event: %s/%s/\n", pmu->name, sb.buf);
1493                 strbuf_release(&sb);
1494         }
1495
1496         /* Configure attr/terms again if an alias was expanded. */
1497         if (alias_rewrote_terms &&
1498             config_attr(&attr, &parsed_terms, parse_state->error, config_term_pmu)) {
1499                 parse_events_terms__exit(&parsed_terms);
1500                 return -EINVAL;
1501         }
1502
1503         if (get_config_terms(&parsed_terms, &config_terms)) {
1504                 parse_events_terms__exit(&parsed_terms);
1505                 return -ENOMEM;
1506         }
1507
1508         /*
1509          * When using default config, record which bits of attr->config were
1510          * changed by the user.
1511          */
1512         if (pmu->perf_event_attr_init_default &&
1513             get_config_chgs(pmu, &parsed_terms, &config_terms)) {
1514                 parse_events_terms__exit(&parsed_terms);
1515                 return -ENOMEM;
1516         }
1517
1518         if (!parse_state->fake_pmu &&
1519             perf_pmu__config(pmu, &attr, &parsed_terms, parse_state->error)) {
1520                 free_config_terms(&config_terms);
1521                 parse_events_terms__exit(&parsed_terms);
1522                 return -EINVAL;
1523         }
1524
1525         evsel = __add_event(list, &parse_state->idx, &attr, /*init_attr=*/true,
1526                             get_config_name(&parsed_terms),
1527                             get_config_metric_id(&parsed_terms), pmu,
1528                             &config_terms, auto_merge_stats, /*cpu_list=*/NULL);
1529         if (!evsel) {
1530                 parse_events_terms__exit(&parsed_terms);
1531                 return -ENOMEM;
1532         }
1533
1534         if (evsel->name)
1535                 evsel->use_config_name = true;
1536
1537         evsel->percore = config_term_percore(&evsel->config_terms);
1538
1539         if (parse_state->fake_pmu) {
1540                 parse_events_terms__exit(&parsed_terms);
1541                 return 0;
1542         }
1543
1544         parse_events_terms__exit(&parsed_terms);
1545         free((char *)evsel->unit);
1546         evsel->unit = strdup(info.unit);
1547         evsel->scale = info.scale;
1548         evsel->per_pkg = info.per_pkg;
1549         evsel->snapshot = info.snapshot;
1550         return 0;
1551 }
1552
1553 int parse_events_multi_pmu_add(struct parse_events_state *parse_state,
1554                                const char *event_name,
1555                                const struct parse_events_terms *const_parsed_terms,
1556                                struct list_head **listp, void *loc_)
1557 {
1558         struct parse_events_term *term;
1559         struct list_head *list = NULL;
1560         struct perf_pmu *pmu = NULL;
1561         YYLTYPE *loc = loc_;
1562         int ok = 0;
1563         const char *config;
1564         struct parse_events_terms parsed_terms;
1565
1566         *listp = NULL;
1567
1568         parse_events_terms__init(&parsed_terms);
1569         if (const_parsed_terms) {
1570                 int ret = parse_events_terms__copy(const_parsed_terms, &parsed_terms);
1571
1572                 if (ret)
1573                         return ret;
1574         }
1575
1576         config = strdup(event_name);
1577         if (!config)
1578                 goto out_err;
1579
1580         if (parse_events_term__num(&term,
1581                                    PARSE_EVENTS__TERM_TYPE_USER,
1582                                    config, /*num=*/1, /*novalue=*/true,
1583                                    loc, /*loc_val=*/NULL) < 0) {
1584                 zfree(&config);
1585                 goto out_err;
1586         }
1587         list_add_tail(&term->list, &parsed_terms.terms);
1588
1589         /* Add it for all PMUs that support the alias */
1590         list = malloc(sizeof(struct list_head));
1591         if (!list)
1592                 goto out_err;
1593
1594         INIT_LIST_HEAD(list);
1595
1596         while ((pmu = perf_pmus__scan(pmu)) != NULL) {
1597                 bool auto_merge_stats;
1598
1599                 if (parse_events__filter_pmu(parse_state, pmu))
1600                         continue;
1601
1602                 if (!perf_pmu__have_event(pmu, event_name))
1603                         continue;
1604
1605                 auto_merge_stats = perf_pmu__auto_merge_stats(pmu);
1606                 if (!parse_events_add_pmu(parse_state, list, pmu,
1607                                           &parsed_terms, auto_merge_stats)) {
1608                         struct strbuf sb;
1609
1610                         strbuf_init(&sb, /*hint=*/ 0);
1611                         parse_events_terms__to_strbuf(&parsed_terms, &sb);
1612                         pr_debug("%s -> %s/%s/\n", event_name, pmu->name, sb.buf);
1613                         strbuf_release(&sb);
1614                         ok++;
1615                 }
1616         }
1617
1618         if (parse_state->fake_pmu) {
1619                 if (!parse_events_add_pmu(parse_state, list, parse_state->fake_pmu, &parsed_terms,
1620                                           /*auto_merge_stats=*/true)) {
1621                         struct strbuf sb;
1622
1623                         strbuf_init(&sb, /*hint=*/ 0);
1624                         parse_events_terms__to_strbuf(&parsed_terms, &sb);
1625                         pr_debug("%s -> %s/%s/\n", event_name, "fake_pmu", sb.buf);
1626                         strbuf_release(&sb);
1627                         ok++;
1628                 }
1629         }
1630
1631 out_err:
1632         parse_events_terms__exit(&parsed_terms);
1633         if (ok)
1634                 *listp = list;
1635         else
1636                 free(list);
1637
1638         return ok ? 0 : -1;
1639 }
1640
1641 int parse_events_multi_pmu_add_or_add_pmu(struct parse_events_state *parse_state,
1642                                         const char *event_or_pmu,
1643                                         const struct parse_events_terms *const_parsed_terms,
1644                                         struct list_head **listp,
1645                                         void *loc_)
1646 {
1647         YYLTYPE *loc = loc_;
1648         struct perf_pmu *pmu;
1649         int ok = 0;
1650         char *help;
1651
1652         *listp = malloc(sizeof(**listp));
1653         if (!*listp)
1654                 return -ENOMEM;
1655
1656         INIT_LIST_HEAD(*listp);
1657
1658         /* Attempt to add to list assuming event_or_pmu is a PMU name. */
1659         pmu = parse_state->fake_pmu ?: perf_pmus__find(event_or_pmu);
1660         if (pmu && !parse_events_add_pmu(parse_state, *listp, pmu, const_parsed_terms,
1661                                         /*auto_merge_stats=*/false))
1662                 return 0;
1663
1664         pmu = NULL;
1665         /* Failed to add, try wildcard expansion of event_or_pmu as a PMU name. */
1666         while ((pmu = perf_pmus__scan(pmu)) != NULL) {
1667                 if (!parse_events__filter_pmu(parse_state, pmu) &&
1668                     perf_pmu__match(pmu, event_or_pmu)) {
1669                         bool auto_merge_stats = perf_pmu__auto_merge_stats(pmu);
1670
1671                         if (!parse_events_add_pmu(parse_state, *listp, pmu,
1672                                                   const_parsed_terms,
1673                                                   auto_merge_stats)) {
1674                                 ok++;
1675                                 parse_state->wild_card_pmus = true;
1676                         }
1677                 }
1678         }
1679         if (ok)
1680                 return 0;
1681
1682         /* Failure to add, assume event_or_pmu is an event name. */
1683         zfree(listp);
1684         if (!parse_events_multi_pmu_add(parse_state, event_or_pmu, const_parsed_terms, listp, loc))
1685                 return 0;
1686
1687         if (asprintf(&help, "Unable to find PMU or event on a PMU of '%s'", event_or_pmu) < 0)
1688                 help = NULL;
1689         parse_events_error__handle(parse_state->error, loc->first_column,
1690                                 strdup("Bad event or PMU"),
1691                                 help);
1692         zfree(listp);
1693         return -EINVAL;
1694 }
1695
1696 void parse_events__set_leader(char *name, struct list_head *list)
1697 {
1698         struct evsel *leader;
1699
1700         if (list_empty(list)) {
1701                 WARN_ONCE(true, "WARNING: failed to set leader: empty list");
1702                 return;
1703         }
1704
1705         leader = list_first_entry(list, struct evsel, core.node);
1706         __perf_evlist__set_leader(list, &leader->core);
1707         zfree(&leader->group_name);
1708         leader->group_name = name;
1709 }
1710
1711 static int parse_events__modifier_list(struct parse_events_state *parse_state,
1712                                        YYLTYPE *loc,
1713                                        struct list_head *list,
1714                                        struct parse_events_modifier mod,
1715                                        bool group)
1716 {
1717         struct evsel *evsel;
1718
1719         if (!group && mod.weak) {
1720                 parse_events_error__handle(parse_state->error, loc->first_column,
1721                                            strdup("Weak modifier is for use with groups"), NULL);
1722                 return -EINVAL;
1723         }
1724
1725         __evlist__for_each_entry(list, evsel) {
1726                 /* Translate modifiers into the equivalent evsel excludes. */
1727                 int eu = group ? evsel->core.attr.exclude_user : 0;
1728                 int ek = group ? evsel->core.attr.exclude_kernel : 0;
1729                 int eh = group ? evsel->core.attr.exclude_hv : 0;
1730                 int eH = group ? evsel->core.attr.exclude_host : 0;
1731                 int eG = group ? evsel->core.attr.exclude_guest : 0;
1732                 int exclude = eu | ek | eh;
1733                 int exclude_GH = group ? evsel->exclude_GH : 0;
1734
1735                 if (mod.precise) {
1736                         /* use of precise requires exclude_guest */
1737                         eG = 1;
1738                 }
1739                 if (mod.user) {
1740                         if (!exclude)
1741                                 exclude = eu = ek = eh = 1;
1742                         if (!exclude_GH && !perf_guest)
1743                                 eG = 1;
1744                         eu = 0;
1745                 }
1746                 if (mod.kernel) {
1747                         if (!exclude)
1748                                 exclude = eu = ek = eh = 1;
1749                         ek = 0;
1750                 }
1751                 if (mod.hypervisor) {
1752                         if (!exclude)
1753                                 exclude = eu = ek = eh = 1;
1754                         eh = 0;
1755                 }
1756                 if (mod.guest) {
1757                         if (!exclude_GH)
1758                                 exclude_GH = eG = eH = 1;
1759                         eG = 0;
1760                 }
1761                 if (mod.host) {
1762                         if (!exclude_GH)
1763                                 exclude_GH = eG = eH = 1;
1764                         eH = 0;
1765                 }
1766                 evsel->core.attr.exclude_user   = eu;
1767                 evsel->core.attr.exclude_kernel = ek;
1768                 evsel->core.attr.exclude_hv     = eh;
1769                 evsel->core.attr.exclude_host   = eH;
1770                 evsel->core.attr.exclude_guest  = eG;
1771                 evsel->exclude_GH               = exclude_GH;
1772
1773                 /* Simple modifiers copied to the evsel. */
1774                 if (mod.precise) {
1775                         u8 precise = evsel->core.attr.precise_ip + mod.precise;
1776                         /*
1777                          * precise ip:
1778                          *
1779                          *  0 - SAMPLE_IP can have arbitrary skid
1780                          *  1 - SAMPLE_IP must have constant skid
1781                          *  2 - SAMPLE_IP requested to have 0 skid
1782                          *  3 - SAMPLE_IP must have 0 skid
1783                          *
1784                          *  See also PERF_RECORD_MISC_EXACT_IP
1785                          */
1786                         if (precise > 3) {
1787                                 char *help;
1788
1789                                 if (asprintf(&help,
1790                                              "Maximum combined precise value is 3, adding precision to \"%s\"",
1791                                              evsel__name(evsel)) > 0) {
1792                                         parse_events_error__handle(parse_state->error,
1793                                                                    loc->first_column,
1794                                                                    help, NULL);
1795                                 }
1796                                 return -EINVAL;
1797                         }
1798                         evsel->core.attr.precise_ip = precise;
1799                 }
1800                 if (mod.precise_max)
1801                         evsel->precise_max = 1;
1802                 if (mod.non_idle)
1803                         evsel->core.attr.exclude_idle = 1;
1804                 if (mod.sample_read)
1805                         evsel->sample_read = 1;
1806                 if (mod.pinned && evsel__is_group_leader(evsel))
1807                         evsel->core.attr.pinned = 1;
1808                 if (mod.exclusive && evsel__is_group_leader(evsel))
1809                         evsel->core.attr.exclusive = 1;
1810                 if (mod.weak)
1811                         evsel->weak_group = true;
1812                 if (mod.bpf)
1813                         evsel->bpf_counter = true;
1814         }
1815         return 0;
1816 }
1817
1818 int parse_events__modifier_group(struct parse_events_state *parse_state, void *loc,
1819                                  struct list_head *list,
1820                                  struct parse_events_modifier mod)
1821 {
1822         return parse_events__modifier_list(parse_state, loc, list, mod, /*group=*/true);
1823 }
1824
1825 int parse_events__modifier_event(struct parse_events_state *parse_state, void *loc,
1826                                  struct list_head *list,
1827                                  struct parse_events_modifier mod)
1828 {
1829         return parse_events__modifier_list(parse_state, loc, list, mod, /*group=*/false);
1830 }
1831
1832 int parse_events__set_default_name(struct list_head *list, char *name)
1833 {
1834         struct evsel *evsel;
1835         bool used_name = false;
1836
1837         __evlist__for_each_entry(list, evsel) {
1838                 if (!evsel->name) {
1839                         evsel->name = used_name ? strdup(name) : name;
1840                         used_name = true;
1841                         if (!evsel->name)
1842                                 return -ENOMEM;
1843                 }
1844         }
1845         if (!used_name)
1846                 free(name);
1847         return 0;
1848 }
1849
1850 static int parse_events__scanner(const char *str,
1851                                  FILE *input,
1852                                  struct parse_events_state *parse_state)
1853 {
1854         YY_BUFFER_STATE buffer;
1855         void *scanner;
1856         int ret;
1857
1858         ret = parse_events_lex_init_extra(parse_state, &scanner);
1859         if (ret)
1860                 return ret;
1861
1862         if (str)
1863                 buffer = parse_events__scan_string(str, scanner);
1864         else
1865                 parse_events_set_in(input, scanner);
1866
1867 #ifdef PARSER_DEBUG
1868         parse_events_debug = 1;
1869         parse_events_set_debug(1, scanner);
1870 #endif
1871         ret = parse_events_parse(parse_state, scanner);
1872
1873         if (str) {
1874                 parse_events__flush_buffer(buffer, scanner);
1875                 parse_events__delete_buffer(buffer, scanner);
1876         }
1877         parse_events_lex_destroy(scanner);
1878         return ret;
1879 }
1880
1881 /*
1882  * parse event config string, return a list of event terms.
1883  */
1884 int parse_events_terms(struct parse_events_terms *terms, const char *str, FILE *input)
1885 {
1886         struct parse_events_state parse_state = {
1887                 .terms  = NULL,
1888                 .stoken = PE_START_TERMS,
1889         };
1890         int ret;
1891
1892         ret = parse_events__scanner(str, input, &parse_state);
1893         if (!ret)
1894                 list_splice(&parse_state.terms->terms, &terms->terms);
1895
1896         zfree(&parse_state.terms);
1897         return ret;
1898 }
1899
1900 static int evsel__compute_group_pmu_name(struct evsel *evsel,
1901                                           const struct list_head *head)
1902 {
1903         struct evsel *leader = evsel__leader(evsel);
1904         struct evsel *pos;
1905         const char *group_pmu_name;
1906         struct perf_pmu *pmu = evsel__find_pmu(evsel);
1907
1908         if (!pmu) {
1909                 /*
1910                  * For PERF_TYPE_HARDWARE and PERF_TYPE_HW_CACHE types the PMU
1911                  * is a core PMU, but in heterogeneous systems this is
1912                  * unknown. For now pick the first core PMU.
1913                  */
1914                 pmu = perf_pmus__scan_core(NULL);
1915         }
1916         if (!pmu) {
1917                 pr_debug("No PMU found for '%s'\n", evsel__name(evsel));
1918                 return -EINVAL;
1919         }
1920         group_pmu_name = pmu->name;
1921         /*
1922          * Software events may be in a group with other uncore PMU events. Use
1923          * the pmu_name of the first non-software event to avoid breaking the
1924          * software event out of the group.
1925          *
1926          * Aux event leaders, like intel_pt, expect a group with events from
1927          * other PMUs, so substitute the AUX event's PMU in this case.
1928          */
1929         if (perf_pmu__is_software(pmu) || evsel__is_aux_event(leader)) {
1930                 struct perf_pmu *leader_pmu = evsel__find_pmu(leader);
1931
1932                 if (!leader_pmu) {
1933                         /* As with determining pmu above. */
1934                         leader_pmu = perf_pmus__scan_core(NULL);
1935                 }
1936                 /*
1937                  * Starting with the leader, find the first event with a named
1938                  * non-software PMU. for_each_group_(member|evsel) isn't used as
1939                  * the list isn't yet sorted putting evsel's in the same group
1940                  * together.
1941                  */
1942                 if (leader_pmu && !perf_pmu__is_software(leader_pmu)) {
1943                         group_pmu_name = leader_pmu->name;
1944                 } else if (leader->core.nr_members > 1) {
1945                         list_for_each_entry(pos, head, core.node) {
1946                                 struct perf_pmu *pos_pmu;
1947
1948                                 if (pos == leader || evsel__leader(pos) != leader)
1949                                         continue;
1950                                 pos_pmu = evsel__find_pmu(pos);
1951                                 if (!pos_pmu) {
1952                                         /* As with determining pmu above. */
1953                                         pos_pmu = perf_pmus__scan_core(NULL);
1954                                 }
1955                                 if (pos_pmu && !perf_pmu__is_software(pos_pmu)) {
1956                                         group_pmu_name = pos_pmu->name;
1957                                         break;
1958                                 }
1959                         }
1960                 }
1961         }
1962         /* Assign the actual name taking care that the fake PMU lacks a name. */
1963         evsel->group_pmu_name = strdup(group_pmu_name ?: "fake");
1964         return evsel->group_pmu_name ? 0 : -ENOMEM;
1965 }
1966
1967 __weak int arch_evlist__cmp(const struct evsel *lhs, const struct evsel *rhs)
1968 {
1969         /* Order by insertion index. */
1970         return lhs->core.idx - rhs->core.idx;
1971 }
1972
1973 static int evlist__cmp(void *_fg_idx, const struct list_head *l, const struct list_head *r)
1974 {
1975         const struct perf_evsel *lhs_core = container_of(l, struct perf_evsel, node);
1976         const struct evsel *lhs = container_of(lhs_core, struct evsel, core);
1977         const struct perf_evsel *rhs_core = container_of(r, struct perf_evsel, node);
1978         const struct evsel *rhs = container_of(rhs_core, struct evsel, core);
1979         int *force_grouped_idx = _fg_idx;
1980         int lhs_sort_idx, rhs_sort_idx, ret;
1981         const char *lhs_pmu_name, *rhs_pmu_name;
1982         bool lhs_has_group, rhs_has_group;
1983
1984         /*
1985          * First sort by grouping/leader. Read the leader idx only if the evsel
1986          * is part of a group, by default ungrouped events will be sorted
1987          * relative to grouped events based on where the first ungrouped event
1988          * occurs. If both events don't have a group we want to fall-through to
1989          * the arch specific sorting, that can reorder and fix things like
1990          * Intel's topdown events.
1991          */
1992         if (lhs_core->leader != lhs_core || lhs_core->nr_members > 1) {
1993                 lhs_has_group = true;
1994                 lhs_sort_idx = lhs_core->leader->idx;
1995         } else {
1996                 lhs_has_group = false;
1997                 lhs_sort_idx = *force_grouped_idx != -1 && arch_evsel__must_be_in_group(lhs)
1998                         ? *force_grouped_idx
1999                         : lhs_core->idx;
2000         }
2001         if (rhs_core->leader != rhs_core || rhs_core->nr_members > 1) {
2002                 rhs_has_group = true;
2003                 rhs_sort_idx = rhs_core->leader->idx;
2004         } else {
2005                 rhs_has_group = false;
2006                 rhs_sort_idx = *force_grouped_idx != -1 && arch_evsel__must_be_in_group(rhs)
2007                         ? *force_grouped_idx
2008                         : rhs_core->idx;
2009         }
2010
2011         if (lhs_sort_idx != rhs_sort_idx)
2012                 return lhs_sort_idx - rhs_sort_idx;
2013
2014         /* Group by PMU if there is a group. Groups can't span PMUs. */
2015         if (lhs_has_group && rhs_has_group) {
2016                 lhs_pmu_name = lhs->group_pmu_name;
2017                 rhs_pmu_name = rhs->group_pmu_name;
2018                 ret = strcmp(lhs_pmu_name, rhs_pmu_name);
2019                 if (ret)
2020                         return ret;
2021         }
2022
2023         /* Architecture specific sorting. */
2024         return arch_evlist__cmp(lhs, rhs);
2025 }
2026
2027 static int parse_events__sort_events_and_fix_groups(struct list_head *list)
2028 {
2029         int idx = 0, force_grouped_idx = -1;
2030         struct evsel *pos, *cur_leader = NULL;
2031         struct perf_evsel *cur_leaders_grp = NULL;
2032         bool idx_changed = false, cur_leader_force_grouped = false;
2033         int orig_num_leaders = 0, num_leaders = 0;
2034         int ret;
2035
2036         /*
2037          * Compute index to insert ungrouped events at. Place them where the
2038          * first ungrouped event appears.
2039          */
2040         list_for_each_entry(pos, list, core.node) {
2041                 const struct evsel *pos_leader = evsel__leader(pos);
2042
2043                 ret = evsel__compute_group_pmu_name(pos, list);
2044                 if (ret)
2045                         return ret;
2046
2047                 if (pos == pos_leader)
2048                         orig_num_leaders++;
2049
2050                 /*
2051                  * Ensure indexes are sequential, in particular for multiple
2052                  * event lists being merged. The indexes are used to detect when
2053                  * the user order is modified.
2054                  */
2055                 pos->core.idx = idx++;
2056
2057                 /* Remember an index to sort all forced grouped events together to. */
2058                 if (force_grouped_idx == -1 && pos == pos_leader && pos->core.nr_members < 2 &&
2059                     arch_evsel__must_be_in_group(pos))
2060                         force_grouped_idx = pos->core.idx;
2061         }
2062
2063         /* Sort events. */
2064         list_sort(&force_grouped_idx, list, evlist__cmp);
2065
2066         /*
2067          * Recompute groups, splitting for PMUs and adding groups for events
2068          * that require them.
2069          */
2070         idx = 0;
2071         list_for_each_entry(pos, list, core.node) {
2072                 const struct evsel *pos_leader = evsel__leader(pos);
2073                 const char *pos_pmu_name = pos->group_pmu_name;
2074                 const char *cur_leader_pmu_name;
2075                 bool pos_force_grouped = force_grouped_idx != -1 &&
2076                         arch_evsel__must_be_in_group(pos);
2077
2078                 /* Reset index and nr_members. */
2079                 if (pos->core.idx != idx)
2080                         idx_changed = true;
2081                 pos->core.idx = idx++;
2082                 pos->core.nr_members = 0;
2083
2084                 /*
2085                  * Set the group leader respecting the given groupings and that
2086                  * groups can't span PMUs.
2087                  */
2088                 if (!cur_leader)
2089                         cur_leader = pos;
2090
2091                 cur_leader_pmu_name = cur_leader->group_pmu_name;
2092                 if ((cur_leaders_grp != pos->core.leader &&
2093                      (!pos_force_grouped || !cur_leader_force_grouped)) ||
2094                     strcmp(cur_leader_pmu_name, pos_pmu_name)) {
2095                         /* Event is for a different group/PMU than last. */
2096                         cur_leader = pos;
2097                         /*
2098                          * Remember the leader's group before it is overwritten,
2099                          * so that later events match as being in the same
2100                          * group.
2101                          */
2102                         cur_leaders_grp = pos->core.leader;
2103                         /*
2104                          * Avoid forcing events into groups with events that
2105                          * don't need to be in the group.
2106                          */
2107                         cur_leader_force_grouped = pos_force_grouped;
2108                 }
2109                 if (pos_leader != cur_leader) {
2110                         /* The leader changed so update it. */
2111                         evsel__set_leader(pos, cur_leader);
2112                 }
2113         }
2114         list_for_each_entry(pos, list, core.node) {
2115                 struct evsel *pos_leader = evsel__leader(pos);
2116
2117                 if (pos == pos_leader)
2118                         num_leaders++;
2119                 pos_leader->core.nr_members++;
2120         }
2121         return (idx_changed || num_leaders != orig_num_leaders) ? 1 : 0;
2122 }
2123
2124 int __parse_events(struct evlist *evlist, const char *str, const char *pmu_filter,
2125                    struct parse_events_error *err, struct perf_pmu *fake_pmu,
2126                    bool warn_if_reordered, bool fake_tp)
2127 {
2128         struct parse_events_state parse_state = {
2129                 .list     = LIST_HEAD_INIT(parse_state.list),
2130                 .idx      = evlist->core.nr_entries,
2131                 .error    = err,
2132                 .stoken   = PE_START_EVENTS,
2133                 .fake_pmu = fake_pmu,
2134                 .fake_tp  = fake_tp,
2135                 .pmu_filter = pmu_filter,
2136                 .match_legacy_cache_terms = true,
2137         };
2138         int ret, ret2;
2139
2140         ret = parse_events__scanner(str, /*input=*/ NULL, &parse_state);
2141
2142         if (!ret && list_empty(&parse_state.list)) {
2143                 WARN_ONCE(true, "WARNING: event parser found nothing\n");
2144                 return -1;
2145         }
2146
2147         ret2 = parse_events__sort_events_and_fix_groups(&parse_state.list);
2148         if (ret2 < 0)
2149                 return ret;
2150
2151         if (ret2 && warn_if_reordered && !parse_state.wild_card_pmus)
2152                 pr_warning("WARNING: events were regrouped to match PMUs\n");
2153
2154         /*
2155          * Add list to the evlist even with errors to allow callers to clean up.
2156          */
2157         evlist__splice_list_tail(evlist, &parse_state.list);
2158
2159         if (!ret) {
2160                 struct evsel *last;
2161
2162                 last = evlist__last(evlist);
2163                 last->cmdline_group_boundary = true;
2164
2165                 return 0;
2166         }
2167
2168         /*
2169          * There are 2 users - builtin-record and builtin-test objects.
2170          * Both call evlist__delete in case of error, so we dont
2171          * need to bother.
2172          */
2173         return ret;
2174 }
2175
2176 int parse_event(struct evlist *evlist, const char *str)
2177 {
2178         struct parse_events_error err;
2179         int ret;
2180
2181         parse_events_error__init(&err);
2182         ret = parse_events(evlist, str, &err);
2183         parse_events_error__exit(&err);
2184         return ret;
2185 }
2186
2187 struct parse_events_error_entry {
2188         /** @list: The list the error is part of. */
2189         struct list_head list;
2190         /** @idx: index in the parsed string */
2191         int   idx;
2192         /** @str: string to display at the index */
2193         char *str;
2194         /** @help: optional help string */
2195         char *help;
2196 };
2197
2198 void parse_events_error__init(struct parse_events_error *err)
2199 {
2200         INIT_LIST_HEAD(&err->list);
2201 }
2202
2203 void parse_events_error__exit(struct parse_events_error *err)
2204 {
2205         struct parse_events_error_entry *pos, *tmp;
2206
2207         list_for_each_entry_safe(pos, tmp, &err->list, list) {
2208                 zfree(&pos->str);
2209                 zfree(&pos->help);
2210                 list_del_init(&pos->list);
2211                 free(pos);
2212         }
2213 }
2214
2215 void parse_events_error__handle(struct parse_events_error *err, int idx,
2216                                 char *str, char *help)
2217 {
2218         struct parse_events_error_entry *entry;
2219
2220         if (WARN(!str || !err, "WARNING: failed to provide error string or struct\n"))
2221                 goto out_free;
2222
2223         entry = zalloc(sizeof(*entry));
2224         if (!entry) {
2225                 pr_err("Failed to allocate memory for event parsing error: %s (%s)\n",
2226                         str, help ?: "<no help>");
2227                 goto out_free;
2228         }
2229         entry->idx = idx;
2230         entry->str = str;
2231         entry->help = help;
2232         list_add(&entry->list, &err->list);
2233         return;
2234 out_free:
2235         free(str);
2236         free(help);
2237 }
2238
2239 #define MAX_WIDTH 1000
2240 static int get_term_width(void)
2241 {
2242         struct winsize ws;
2243
2244         get_term_dimensions(&ws);
2245         return ws.ws_col > MAX_WIDTH ? MAX_WIDTH : ws.ws_col;
2246 }
2247
2248 static void __parse_events_error__print(int err_idx, const char *err_str,
2249                                         const char *err_help, const char *event)
2250 {
2251         const char *str = "invalid or unsupported event: ";
2252         char _buf[MAX_WIDTH];
2253         char *buf = (char *) event;
2254         int idx = 0;
2255         if (err_str) {
2256                 /* -2 for extra '' in the final fprintf */
2257                 int width       = get_term_width() - 2;
2258                 int len_event   = strlen(event);
2259                 int len_str, max_len, cut = 0;
2260
2261                 /*
2262                  * Maximum error index indent, we will cut
2263                  * the event string if it's bigger.
2264                  */
2265                 int max_err_idx = 13;
2266
2267                 /*
2268                  * Let's be specific with the message when
2269                  * we have the precise error.
2270                  */
2271                 str     = "event syntax error: ";
2272                 len_str = strlen(str);
2273                 max_len = width - len_str;
2274
2275                 buf = _buf;
2276
2277                 /* We're cutting from the beginning. */
2278                 if (err_idx > max_err_idx)
2279                         cut = err_idx - max_err_idx;
2280
2281                 strncpy(buf, event + cut, max_len);
2282
2283                 /* Mark cut parts with '..' on both sides. */
2284                 if (cut)
2285                         buf[0] = buf[1] = '.';
2286
2287                 if ((len_event - cut) > max_len) {
2288                         buf[max_len - 1] = buf[max_len - 2] = '.';
2289                         buf[max_len] = 0;
2290                 }
2291
2292                 idx = len_str + err_idx - cut;
2293         }
2294
2295         fprintf(stderr, "%s'%s'\n", str, buf);
2296         if (idx) {
2297                 fprintf(stderr, "%*s\\___ %s\n", idx + 1, "", err_str);
2298                 if (err_help)
2299                         fprintf(stderr, "\n%s\n", err_help);
2300         }
2301 }
2302
2303 void parse_events_error__print(const struct parse_events_error *err,
2304                                const char *event)
2305 {
2306         struct parse_events_error_entry *pos;
2307         bool first = true;
2308
2309         list_for_each_entry(pos, &err->list, list) {
2310                 if (!first)
2311                         fputs("\n", stderr);
2312                 __parse_events_error__print(pos->idx, pos->str, pos->help, event);
2313                 first = false;
2314         }
2315 }
2316
2317 /*
2318  * In the list of errors err, do any of the error strings (str) contain the
2319  * given needle string?
2320  */
2321 bool parse_events_error__contains(const struct parse_events_error *err,
2322                                   const char *needle)
2323 {
2324         struct parse_events_error_entry *pos;
2325
2326         list_for_each_entry(pos, &err->list, list) {
2327                 if (strstr(pos->str, needle) != NULL)
2328                         return true;
2329         }
2330         return false;
2331 }
2332
2333 #undef MAX_WIDTH
2334
2335 int parse_events_option(const struct option *opt, const char *str,
2336                         int unset __maybe_unused)
2337 {
2338         struct parse_events_option_args *args = opt->value;
2339         struct parse_events_error err;
2340         int ret;
2341
2342         parse_events_error__init(&err);
2343         ret = __parse_events(*args->evlistp, str, args->pmu_filter, &err,
2344                              /*fake_pmu=*/NULL, /*warn_if_reordered=*/true,
2345                              /*fake_tp=*/false);
2346
2347         if (ret) {
2348                 parse_events_error__print(&err, str);
2349                 fprintf(stderr, "Run 'perf list' for a list of valid events\n");
2350         }
2351         parse_events_error__exit(&err);
2352
2353         return ret;
2354 }
2355
2356 int parse_events_option_new_evlist(const struct option *opt, const char *str, int unset)
2357 {
2358         struct parse_events_option_args *args = opt->value;
2359         int ret;
2360
2361         if (*args->evlistp == NULL) {
2362                 *args->evlistp = evlist__new();
2363
2364                 if (*args->evlistp == NULL) {
2365                         fprintf(stderr, "Not enough memory to create evlist\n");
2366                         return -1;
2367                 }
2368         }
2369         ret = parse_events_option(opt, str, unset);
2370         if (ret) {
2371                 evlist__delete(*args->evlistp);
2372                 *args->evlistp = NULL;
2373         }
2374
2375         return ret;
2376 }
2377
2378 static int
2379 foreach_evsel_in_last_glob(struct evlist *evlist,
2380                            int (*func)(struct evsel *evsel,
2381                                        const void *arg),
2382                            const void *arg)
2383 {
2384         struct evsel *last = NULL;
2385         int err;
2386
2387         /*
2388          * Don't return when list_empty, give func a chance to report
2389          * error when it found last == NULL.
2390          *
2391          * So no need to WARN here, let *func do this.
2392          */
2393         if (evlist->core.nr_entries > 0)
2394                 last = evlist__last(evlist);
2395
2396         do {
2397                 err = (*func)(last, arg);
2398                 if (err)
2399                         return -1;
2400                 if (!last)
2401                         return 0;
2402
2403                 if (last->core.node.prev == &evlist->core.entries)
2404                         return 0;
2405                 last = list_entry(last->core.node.prev, struct evsel, core.node);
2406         } while (!last->cmdline_group_boundary);
2407
2408         return 0;
2409 }
2410
2411 static int set_filter(struct evsel *evsel, const void *arg)
2412 {
2413         const char *str = arg;
2414         bool found = false;
2415         int nr_addr_filters = 0;
2416         struct perf_pmu *pmu = NULL;
2417
2418         if (evsel == NULL) {
2419                 fprintf(stderr,
2420                         "--filter option should follow a -e tracepoint or HW tracer option\n");
2421                 return -1;
2422         }
2423
2424         if (evsel->core.attr.type == PERF_TYPE_TRACEPOINT) {
2425                 if (evsel__append_tp_filter(evsel, str) < 0) {
2426                         fprintf(stderr,
2427                                 "not enough memory to hold filter string\n");
2428                         return -1;
2429                 }
2430
2431                 return 0;
2432         }
2433
2434         while ((pmu = perf_pmus__scan(pmu)) != NULL)
2435                 if (pmu->type == evsel->core.attr.type) {
2436                         found = true;
2437                         break;
2438                 }
2439
2440         if (found)
2441                 perf_pmu__scan_file(pmu, "nr_addr_filters",
2442                                     "%d", &nr_addr_filters);
2443
2444         if (!nr_addr_filters)
2445                 return perf_bpf_filter__parse(&evsel->bpf_filters, str);
2446
2447         if (evsel__append_addr_filter(evsel, str) < 0) {
2448                 fprintf(stderr,
2449                         "not enough memory to hold filter string\n");
2450                 return -1;
2451         }
2452
2453         return 0;
2454 }
2455
2456 int parse_filter(const struct option *opt, const char *str,
2457                  int unset __maybe_unused)
2458 {
2459         struct evlist *evlist = *(struct evlist **)opt->value;
2460
2461         return foreach_evsel_in_last_glob(evlist, set_filter,
2462                                           (const void *)str);
2463 }
2464
2465 static int add_exclude_perf_filter(struct evsel *evsel,
2466                                    const void *arg __maybe_unused)
2467 {
2468         char new_filter[64];
2469
2470         if (evsel == NULL || evsel->core.attr.type != PERF_TYPE_TRACEPOINT) {
2471                 fprintf(stderr,
2472                         "--exclude-perf option should follow a -e tracepoint option\n");
2473                 return -1;
2474         }
2475
2476         snprintf(new_filter, sizeof(new_filter), "common_pid != %d", getpid());
2477
2478         if (evsel__append_tp_filter(evsel, new_filter) < 0) {
2479                 fprintf(stderr,
2480                         "not enough memory to hold filter string\n");
2481                 return -1;
2482         }
2483
2484         return 0;
2485 }
2486
2487 int exclude_perf(const struct option *opt,
2488                  const char *arg __maybe_unused,
2489                  int unset __maybe_unused)
2490 {
2491         struct evlist *evlist = *(struct evlist **)opt->value;
2492
2493         return foreach_evsel_in_last_glob(evlist, add_exclude_perf_filter,
2494                                           NULL);
2495 }
2496
2497 int parse_events__is_hardcoded_term(struct parse_events_term *term)
2498 {
2499         return term->type_term != PARSE_EVENTS__TERM_TYPE_USER;
2500 }
2501
2502 static int new_term(struct parse_events_term **_term,
2503                     struct parse_events_term *temp,
2504                     char *str, u64 num)
2505 {
2506         struct parse_events_term *term;
2507
2508         term = malloc(sizeof(*term));
2509         if (!term)
2510                 return -ENOMEM;
2511
2512         *term = *temp;
2513         INIT_LIST_HEAD(&term->list);
2514         term->weak = false;
2515
2516         switch (term->type_val) {
2517         case PARSE_EVENTS__TERM_TYPE_NUM:
2518                 term->val.num = num;
2519                 break;
2520         case PARSE_EVENTS__TERM_TYPE_STR:
2521                 term->val.str = str;
2522                 break;
2523         default:
2524                 free(term);
2525                 return -EINVAL;
2526         }
2527
2528         *_term = term;
2529         return 0;
2530 }
2531
2532 int parse_events_term__num(struct parse_events_term **term,
2533                            enum parse_events__term_type type_term,
2534                            const char *config, u64 num,
2535                            bool no_value,
2536                            void *loc_term_, void *loc_val_)
2537 {
2538         YYLTYPE *loc_term = loc_term_;
2539         YYLTYPE *loc_val = loc_val_;
2540
2541         struct parse_events_term temp = {
2542                 .type_val  = PARSE_EVENTS__TERM_TYPE_NUM,
2543                 .type_term = type_term,
2544                 .config    = config ? : strdup(config_term_name(type_term)),
2545                 .no_value  = no_value,
2546                 .err_term  = loc_term ? loc_term->first_column : 0,
2547                 .err_val   = loc_val  ? loc_val->first_column  : 0,
2548         };
2549
2550         return new_term(term, &temp, /*str=*/NULL, num);
2551 }
2552
2553 int parse_events_term__str(struct parse_events_term **term,
2554                            enum parse_events__term_type type_term,
2555                            char *config, char *str,
2556                            void *loc_term_, void *loc_val_)
2557 {
2558         YYLTYPE *loc_term = loc_term_;
2559         YYLTYPE *loc_val = loc_val_;
2560
2561         struct parse_events_term temp = {
2562                 .type_val  = PARSE_EVENTS__TERM_TYPE_STR,
2563                 .type_term = type_term,
2564                 .config    = config,
2565                 .err_term  = loc_term ? loc_term->first_column : 0,
2566                 .err_val   = loc_val  ? loc_val->first_column  : 0,
2567         };
2568
2569         return new_term(term, &temp, str, /*num=*/0);
2570 }
2571
2572 int parse_events_term__term(struct parse_events_term **term,
2573                             enum parse_events__term_type term_lhs,
2574                             enum parse_events__term_type term_rhs,
2575                             void *loc_term, void *loc_val)
2576 {
2577         return parse_events_term__str(term, term_lhs, NULL,
2578                                       strdup(config_term_name(term_rhs)),
2579                                       loc_term, loc_val);
2580 }
2581
2582 int parse_events_term__clone(struct parse_events_term **new,
2583                              const struct parse_events_term *term)
2584 {
2585         char *str;
2586         struct parse_events_term temp = *term;
2587
2588         temp.used = false;
2589         if (term->config) {
2590                 temp.config = strdup(term->config);
2591                 if (!temp.config)
2592                         return -ENOMEM;
2593         }
2594         if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM)
2595                 return new_term(new, &temp, /*str=*/NULL, term->val.num);
2596
2597         str = strdup(term->val.str);
2598         if (!str) {
2599                 zfree(&temp.config);
2600                 return -ENOMEM;
2601         }
2602         return new_term(new, &temp, str, /*num=*/0);
2603 }
2604
2605 void parse_events_term__delete(struct parse_events_term *term)
2606 {
2607         if (term->type_val != PARSE_EVENTS__TERM_TYPE_NUM)
2608                 zfree(&term->val.str);
2609
2610         zfree(&term->config);
2611         free(term);
2612 }
2613
2614 static int parse_events_terms__copy(const struct parse_events_terms *src,
2615                                     struct parse_events_terms *dest)
2616 {
2617         struct parse_events_term *term;
2618
2619         list_for_each_entry (term, &src->terms, list) {
2620                 struct parse_events_term *n;
2621                 int ret;
2622
2623                 ret = parse_events_term__clone(&n, term);
2624                 if (ret)
2625                         return ret;
2626
2627                 list_add_tail(&n->list, &dest->terms);
2628         }
2629         return 0;
2630 }
2631
2632 void parse_events_terms__init(struct parse_events_terms *terms)
2633 {
2634         INIT_LIST_HEAD(&terms->terms);
2635 }
2636
2637 void parse_events_terms__exit(struct parse_events_terms *terms)
2638 {
2639         struct parse_events_term *term, *h;
2640
2641         list_for_each_entry_safe(term, h, &terms->terms, list) {
2642                 list_del_init(&term->list);
2643                 parse_events_term__delete(term);
2644         }
2645 }
2646
2647 void parse_events_terms__delete(struct parse_events_terms *terms)
2648 {
2649         if (!terms)
2650                 return;
2651         parse_events_terms__exit(terms);
2652         free(terms);
2653 }
2654
2655 int parse_events_terms__to_strbuf(const struct parse_events_terms *terms, struct strbuf *sb)
2656 {
2657         struct parse_events_term *term;
2658         bool first = true;
2659
2660         if (!terms)
2661                 return 0;
2662
2663         list_for_each_entry(term, &terms->terms, list) {
2664                 int ret;
2665
2666                 if (!first) {
2667                         ret = strbuf_addch(sb, ',');
2668                         if (ret < 0)
2669                                 return ret;
2670                 }
2671                 first = false;
2672
2673                 if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM)
2674                         if (term->no_value) {
2675                                 assert(term->val.num == 1);
2676                                 ret = strbuf_addf(sb, "%s", term->config);
2677                         } else
2678                                 ret = strbuf_addf(sb, "%s=%#"PRIx64, term->config, term->val.num);
2679                 else if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR) {
2680                         if (term->config) {
2681                                 ret = strbuf_addf(sb, "%s=", term->config);
2682                                 if (ret < 0)
2683                                         return ret;
2684                         } else if ((unsigned int)term->type_term < __PARSE_EVENTS__TERM_TYPE_NR) {
2685                                 ret = strbuf_addf(sb, "%s=", config_term_name(term->type_term));
2686                                 if (ret < 0)
2687                                         return ret;
2688                         }
2689                         assert(!term->no_value);
2690                         ret = strbuf_addf(sb, "%s", term->val.str);
2691                 }
2692                 if (ret < 0)
2693                         return ret;
2694         }
2695         return 0;
2696 }
2697
2698 static void config_terms_list(char *buf, size_t buf_sz)
2699 {
2700         int i;
2701         bool first = true;
2702
2703         buf[0] = '\0';
2704         for (i = 0; i < __PARSE_EVENTS__TERM_TYPE_NR; i++) {
2705                 const char *name = config_term_name(i);
2706
2707                 if (!config_term_avail(i, NULL))
2708                         continue;
2709                 if (!name)
2710                         continue;
2711                 if (name[0] == '<')
2712                         continue;
2713
2714                 if (strlen(buf) + strlen(name) + 2 >= buf_sz)
2715                         return;
2716
2717                 if (!first)
2718                         strcat(buf, ",");
2719                 else
2720                         first = false;
2721                 strcat(buf, name);
2722         }
2723 }
2724
2725 /*
2726  * Return string contains valid config terms of an event.
2727  * @additional_terms: For terms such as PMU sysfs terms.
2728  */
2729 char *parse_events_formats_error_string(char *additional_terms)
2730 {
2731         char *str;
2732         /* "no-overwrite" is the longest name */
2733         char static_terms[__PARSE_EVENTS__TERM_TYPE_NR *
2734                           (sizeof("no-overwrite") - 1)];
2735
2736         config_terms_list(static_terms, sizeof(static_terms));
2737         /* valid terms */
2738         if (additional_terms) {
2739                 if (asprintf(&str, "valid terms: %s,%s",
2740                              additional_terms, static_terms) < 0)
2741                         goto fail;
2742         } else {
2743                 if (asprintf(&str, "valid terms: %s", static_terms) < 0)
2744                         goto fail;
2745         }
2746         return str;
2747
2748 fail:
2749         return NULL;
2750 }