tools/perf/util/parse-events.c

   1
   2 #include "util.h"
   3 #include "../perf.h"
   4 #include "parse-options.h"
   5 #include "parse-events.h"
   6 #include "exec_cmd.h"
   7 #include "string.h"
   8 #include "cache.h"
   9
  10 int                                     nr_counters;
  11
  12 struct perf_counter_attr                attrs[MAX_COUNTERS];
  13
  14 struct event_symbol {
  15         u8              type;
  16         u64             config;
  17         const char      *symbol;
  18         const char      *alias;
  19 };
  20
  21 char debugfs_path[MAXPATHLEN];
  22
  23 #define CHW(x) .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_##x
  24 #define CSW(x) .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_##x
  25
  26 static struct event_symbol event_symbols[] = {
  27   { CHW(CPU_CYCLES),            "cpu-cycles",           "cycles"        },
  28   { CHW(INSTRUCTIONS),          "instructions",         ""              },
  29   { CHW(CACHE_REFERENCES),      "cache-references",     ""              },
  30   { CHW(CACHE_MISSES),          "cache-misses",         ""              },
  31   { CHW(BRANCH_INSTRUCTIONS),   "branch-instructions",  "branches"      },
  32   { CHW(BRANCH_MISSES),         "branch-misses",        ""              },
  33   { CHW(BUS_CYCLES),            "bus-cycles",           ""              },
  34
  35   { CSW(CPU_CLOCK),             "cpu-clock",            ""              },
  36   { CSW(TASK_CLOCK),            "task-clock",           ""              },
  37   { CSW(PAGE_FAULTS),           "page-faults",          "faults"        },
  38   { CSW(PAGE_FAULTS_MIN),       "minor-faults",         ""              },
  39   { CSW(PAGE_FAULTS_MAJ),       "major-faults",         ""              },
  40   { CSW(CONTEXT_SWITCHES),      "context-switches",     "cs"            },
  41   { CSW(CPU_MIGRATIONS),        "cpu-migrations",       "migrations"    },
  42 };
  43
  44 #define __PERF_COUNTER_FIELD(config, name) \
  45         ((config & PERF_COUNTER_##name##_MASK) >> PERF_COUNTER_##name##_SHIFT)
  46
  47 #define PERF_COUNTER_RAW(config)        __PERF_COUNTER_FIELD(config, RAW)
  48 #define PERF_COUNTER_CONFIG(config)     __PERF_COUNTER_FIELD(config, CONFIG)
  49 #define PERF_COUNTER_TYPE(config)       __PERF_COUNTER_FIELD(config, TYPE)
  50 #define PERF_COUNTER_ID(config)         __PERF_COUNTER_FIELD(config, EVENT)
  51
  52 static const char *hw_event_names[] = {
  53         "cycles",
  54         "instructions",
  55         "cache-references",
  56         "cache-misses",
  57         "branches",
  58         "branch-misses",
  59         "bus-cycles",
  60 };
  61
  62 static const char *sw_event_names[] = {
  63         "cpu-clock-msecs",
  64         "task-clock-msecs",
  65         "page-faults",
  66         "context-switches",
  67         "CPU-migrations",
  68         "minor-faults",
  69         "major-faults",
  70 };
  71
  72 #define MAX_ALIASES 8
  73
  74 static const char *hw_cache[][MAX_ALIASES] = {
  75  { "L1-dcache", "l1-d",         "l1d",          "L1-data",              },
  76  { "L1-icache", "l1-i",         "l1i",          "L1-instruction",       },
  77  { "LLC",       "L2"                                                    },
  78  { "dTLB",      "d-tlb",        "Data-TLB",                             },
  79  { "iTLB",      "i-tlb",        "Instruction-TLB",                      },
  80  { "branch",    "branches",     "bpu",          "btb",          "bpc",  },
  81 };
  82
  83 static const char *hw_cache_op[][MAX_ALIASES] = {
  84  { "load",      "loads",        "read",                                 },
  85  { "store",     "stores",       "write",                                },
  86  { "prefetch",  "prefetches",   "speculative-read", "speculative-load", },
  87 };
  88
  89 static const char *hw_cache_result[][MAX_ALIASES] = {
  90  { "refs",      "Reference",    "ops",          "access",               },
  91  { "misses",    "miss",                                                 },
  92 };
  93
  94 #define C(x)            PERF_COUNT_HW_CACHE_##x
  95 #define CACHE_READ      (1 << C(OP_READ))
  96 #define CACHE_WRITE     (1 << C(OP_WRITE))
  97 #define CACHE_PREFETCH  (1 << C(OP_PREFETCH))
  98 #define COP(x)          (1 << x)
  99
 100 /*
 101  * cache operartion stat
 102  * L1I : Read and prefetch only
 103  * ITLB and BPU : Read-only
 104  */
 105 static unsigned long hw_cache_stat[C(MAX)] = {
 106  [C(L1D)]       = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH),
 107  [C(L1I)]       = (CACHE_READ | CACHE_PREFETCH),
 108  [C(LL)]        = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH),
 109  [C(DTLB)]      = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH),
 110  [C(ITLB)]      = (CACHE_READ),
 111  [C(BPU)]       = (CACHE_READ),
 112 };
 113
 114 #define for_each_subsystem(sys_dir, sys_dirent, sys_next)              \
 115         while (!readdir_r(sys_dir, &sys_dirent, &sys_next) && sys_next)        \
 116         if (sys_dirent.d_type == DT_DIR &&                                     \
 117            (strcmp(sys_dirent.d_name, ".")) &&                                 \
 118            (strcmp(sys_dirent.d_name, "..")))
 119
 120 static int tp_event_has_id(struct dirent *sys_dir, struct dirent *evt_dir)
 121 {
 122         char evt_path[MAXPATHLEN];
 123         int fd;
 124
 125         snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", debugfs_path,
 126                         sys_dir->d_name, evt_dir->d_name);
 127         fd = open(evt_path, O_RDONLY);
 128         if (fd < 0)
 129                 return -EINVAL;
 130         close(fd);
 131
 132         return 0;
 133 }
 134
 135 #define for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next)              \
 136         while (!readdir_r(evt_dir, &evt_dirent, &evt_next) && evt_next)        \
 137         if (evt_dirent.d_type == DT_DIR &&                                     \
 138            (strcmp(evt_dirent.d_name, ".")) &&                                 \
 139            (strcmp(evt_dirent.d_name, "..")) &&                                \
 140            (!tp_event_has_id(&sys_dirent, &evt_dirent)))
 141
 142 #define MAX_EVENT_LENGTH 30
 143
 144 int valid_debugfs_mount(const char *debugfs)
 145 {
 146         struct statfs st_fs;
 147
 148         if (statfs(debugfs, &st_fs) < 0)
 149                 return -ENOENT;
 150         else if (st_fs.f_type != (long) DEBUGFS_MAGIC)
 151                 return -ENOENT;
 152         return 0;
 153 }
 154
 155 struct tracepoint_path *tracepoint_id_to_path(u64 config)
 156 {
 157         struct tracepoint_path *path = NULL;
 158         DIR *sys_dir, *evt_dir;
 159         struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
 160         char id_buf[4];
 161         int sys_dir_fd, fd;
 162         u64 id;
 163         char evt_path[MAXPATHLEN];
 164
 165         if (valid_debugfs_mount(debugfs_path))
 166                 return NULL;
 167
 168         sys_dir = opendir(debugfs_path);
 169         if (!sys_dir)
 170                 goto cleanup;
 171         sys_dir_fd = dirfd(sys_dir);
 172
 173         for_each_subsystem(sys_dir, sys_dirent, sys_next) {
 174                 int dfd = openat(sys_dir_fd, sys_dirent.d_name,
 175                                  O_RDONLY|O_DIRECTORY), evt_dir_fd;
 176                 if (dfd == -1)
 177                         continue;
 178                 evt_dir = fdopendir(dfd);
 179                 if (!evt_dir) {
 180                         close(dfd);
 181                         continue;
 182                 }
 183                 evt_dir_fd = dirfd(evt_dir);
 184                 for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
 185                         snprintf(evt_path, MAXPATHLEN, "%s/id",
 186                                  evt_dirent.d_name);
 187                         fd = openat(evt_dir_fd, evt_path, O_RDONLY);
 188                         if (fd < 0)
 189                                 continue;
 190                         if (read(fd, id_buf, sizeof(id_buf)) < 0) {
 191                                 close(fd);
 192                                 continue;
 193                         }
 194                         close(fd);
 195                         id = atoll(id_buf);
 196                         if (id == config) {
 197                                 closedir(evt_dir);
 198                                 closedir(sys_dir);
 199                                 path = calloc(1, sizeof(path));
 200                                 path->system = malloc(MAX_EVENT_LENGTH);
 201                                 if (!path->system) {
 202                                         free(path);
 203                                         return NULL;
 204                                 }
 205                                 path->name = malloc(MAX_EVENT_LENGTH);
 206                                 if (!path->name) {
 207                                         free(path->system);
 208                                         free(path);
 209                                         return NULL;
 210                                 }
 211                                 strncpy(path->system, sys_dirent.d_name,
 212                                         MAX_EVENT_LENGTH);
 213                                 strncpy(path->name, evt_dirent.d_name,
 214                                         MAX_EVENT_LENGTH);
 215                                 return path;
 216                         }
 217                 }
 218                 closedir(evt_dir);
 219         }
 220
 221 cleanup:
 222         closedir(sys_dir);
 223         return NULL;
 224 }
 225
 226 #define TP_PATH_LEN (MAX_EVENT_LENGTH * 2 + 1)
 227 static const char *tracepoint_id_to_name(u64 config)
 228 {
 229         static char buf[TP_PATH_LEN];
 230         struct tracepoint_path *path;
 231
 232         path = tracepoint_id_to_path(config);
 233         if (path) {
 234                 snprintf(buf, TP_PATH_LEN, "%s:%s", path->system, path->name);
 235                 free(path->name);
 236                 free(path->system);
 237                 free(path);
 238         } else
 239                 snprintf(buf, TP_PATH_LEN, "%s:%s", "unknown", "unknown");
 240
 241         return buf;
 242 }
 243
 244 static int is_cache_op_valid(u8 cache_type, u8 cache_op)
 245 {
 246         if (hw_cache_stat[cache_type] & COP(cache_op))
 247                 return 1;       /* valid */
 248         else
 249                 return 0;       /* invalid */
 250 }
 251
 252 static char *event_cache_name(u8 cache_type, u8 cache_op, u8 cache_result)
 253 {
 254         static char name[50];
 255
 256         if (cache_result) {
 257                 sprintf(name, "%s-%s-%s", hw_cache[cache_type][0],
 258                         hw_cache_op[cache_op][0],
 259                         hw_cache_result[cache_result][0]);
 260         } else {
 261                 sprintf(name, "%s-%s", hw_cache[cache_type][0],
 262                         hw_cache_op[cache_op][1]);
 263         }
 264
 265         return name;
 266 }
 267
 268 const char *event_name(int counter)
 269 {
 270         u64 config = attrs[counter].config;
 271         int type = attrs[counter].type;
 272
 273         return __event_name(type, config);
 274 }
 275
 276 const char *__event_name(int type, u64 config)
 277 {
 278         static char buf[32];
 279
 280         if (type == PERF_TYPE_RAW) {
 281                 sprintf(buf, "raw 0x%llx", config);
 282                 return buf;
 283         }
 284
 285         switch (type) {
 286         case PERF_TYPE_HARDWARE:
 287                 if (config < PERF_COUNT_HW_MAX)
 288                         return hw_event_names[config];
 289                 return "unknown-hardware";
 290
 291         case PERF_TYPE_HW_CACHE: {
 292                 u8 cache_type, cache_op, cache_result;
 293
 294                 cache_type   = (config >>  0) & 0xff;
 295                 if (cache_type > PERF_COUNT_HW_CACHE_MAX)
 296                         return "unknown-ext-hardware-cache-type";
 297
 298                 cache_op     = (config >>  8) & 0xff;
 299                 if (cache_op > PERF_COUNT_HW_CACHE_OP_MAX)
 300                         return "unknown-ext-hardware-cache-op";
 301
 302                 cache_result = (config >> 16) & 0xff;
 303                 if (cache_result > PERF_COUNT_HW_CACHE_RESULT_MAX)
 304                         return "unknown-ext-hardware-cache-result";
 305
 306                 if (!is_cache_op_valid(cache_type, cache_op))
 307                         return "invalid-cache";
 308
 309                 return event_cache_name(cache_type, cache_op, cache_result);
 310         }
 311
 312         case PERF_TYPE_SOFTWARE:
 313                 if (config < PERF_COUNT_SW_MAX)
 314                         return sw_event_names[config];
 315                 return "unknown-software";
 316
 317         case PERF_TYPE_TRACEPOINT:
 318                 return tracepoint_id_to_name(config);
 319
 320         default:
 321                 break;
 322         }
 323
 324         return "unknown";
 325 }
 326
 327 static int parse_aliases(const char **str, const char *names[][MAX_ALIASES], int size)
 328 {
 329         int i, j;
 330         int n, longest = -1;
 331
 332         for (i = 0; i < size; i++) {
 333                 for (j = 0; j < MAX_ALIASES && names[i][j]; j++) {
 334                         n = strlen(names[i][j]);
 335                         if (n > longest && !strncasecmp(*str, names[i][j], n))
 336                                 longest = n;
 337                 }
 338                 if (longest > 0) {
 339                         *str += longest;
 340                         return i;
 341                 }
 342         }
 343
 344         return -1;
 345 }
 346
 347 static int
 348 parse_generic_hw_event(const char **str, struct perf_counter_attr *attr)
 349 {
 350         const char *s = *str;
 351         int cache_type = -1, cache_op = -1, cache_result = -1;
 352
 353         cache_type = parse_aliases(&s, hw_cache, PERF_COUNT_HW_CACHE_MAX);
 354         /*
 355          * No fallback - if we cannot get a clear cache type
 356          * then bail out:
 357          */
 358         if (cache_type == -1)
 359                 return 0;
 360
 361         while ((cache_op == -1 || cache_result == -1) && *s == '-') {
 362                 ++s;
 363
 364                 if (cache_op == -1) {
 365                         cache_op = parse_aliases(&s, hw_cache_op,
 366                                                 PERF_COUNT_HW_CACHE_OP_MAX);
 367                         if (cache_op >= 0) {
 368                                 if (!is_cache_op_valid(cache_type, cache_op))
 369                                         return 0;
 370                                 continue;
 371                         }
 372                 }
 373
 374                 if (cache_result == -1) {
 375                         cache_result = parse_aliases(&s, hw_cache_result,
 376                                                 PERF_COUNT_HW_CACHE_RESULT_MAX);
 377                         if (cache_result >= 0)
 378                                 continue;
 379                 }
 380
 381                 /*
 382                  * Can't parse this as a cache op or result, so back up
 383                  * to the '-'.
 384                  */
 385                 --s;
 386                 break;
 387         }
 388
 389         /*
 390          * Fall back to reads:
 391          */
 392         if (cache_op == -1)
 393                 cache_op = PERF_COUNT_HW_CACHE_OP_READ;
 394
 395         /*
 396          * Fall back to accesses:
 397          */
 398         if (cache_result == -1)
 399                 cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS;
 400
 401         attr->config = cache_type | (cache_op << 8) | (cache_result << 16);
 402         attr->type = PERF_TYPE_HW_CACHE;
 403
 404         *str = s;
 405         return 1;
 406 }
 407
 408 static int parse_tracepoint_event(const char **strp,
 409                                     struct perf_counter_attr *attr)
 410 {
 411         const char *evt_name;
 412         char *flags;
 413         char sys_name[MAX_EVENT_LENGTH];
 414         char id_buf[4];
 415         int fd;
 416         unsigned int sys_length, evt_length;
 417         u64 id;
 418         char evt_path[MAXPATHLEN];
 419
 420         if (valid_debugfs_mount(debugfs_path))
 421                 return 0;
 422
 423         evt_name = strchr(*strp, ':');
 424         if (!evt_name)
 425                 return 0;
 426
 427         sys_length = evt_name - *strp;
 428         if (sys_length >= MAX_EVENT_LENGTH)
 429                 return 0;
 430
 431         strncpy(sys_name, *strp, sys_length);
 432         sys_name[sys_length] = '\0';
 433         evt_name = evt_name + 1;
 434
 435         flags = strchr(evt_name, ':');
 436         if (flags) {
 437                 *flags = '\0';
 438                 flags++;
 439                 if (!strncmp(flags, "record", strlen(flags)))
 440                         attr->sample_type |= PERF_SAMPLE_RAW;
 441         }
 442
 443         evt_length = strlen(evt_name);
 444         if (evt_length >= MAX_EVENT_LENGTH)
 445                 return 0;
 446
 447         snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", debugfs_path,
 448                  sys_name, evt_name);
 449         fd = open(evt_path, O_RDONLY);
 450         if (fd < 0)
 451                 return 0;
 452
 453         if (read(fd, id_buf, sizeof(id_buf)) < 0) {
 454                 close(fd);
 455                 return 0;
 456         }
 457         close(fd);
 458         id = atoll(id_buf);
 459         attr->config = id;
 460         attr->type = PERF_TYPE_TRACEPOINT;
 461         *strp = evt_name + evt_length;
 462         return 1;
 463 }
 464
 465 static int check_events(const char *str, unsigned int i)
 466 {
 467         int n;
 468
 469         n = strlen(event_symbols[i].symbol);
 470         if (!strncmp(str, event_symbols[i].symbol, n))
 471                 return n;
 472
 473         n = strlen(event_symbols[i].alias);
 474         if (n)
 475                 if (!strncmp(str, event_symbols[i].alias, n))
 476                         return n;
 477         return 0;
 478 }
 479
 480 static int
 481 parse_symbolic_event(const char **strp, struct perf_counter_attr *attr)
 482 {
 483         const char *str = *strp;
 484         unsigned int i;
 485         int n;
 486
 487         for (i = 0; i < ARRAY_SIZE(event_symbols); i++) {
 488                 n = check_events(str, i);
 489                 if (n > 0) {
 490                         attr->type = event_symbols[i].type;
 491                         attr->config = event_symbols[i].config;
 492                         *strp = str + n;
 493                         return 1;
 494                 }
 495         }
 496         return 0;
 497 }
 498
 499 static int parse_raw_event(const char **strp, struct perf_counter_attr *attr)
 500 {
 501         const char *str = *strp;
 502         u64 config;
 503         int n;
 504
 505         if (*str != 'r')
 506                 return 0;
 507         n = hex2u64(str + 1, &config);
 508         if (n > 0) {
 509                 *strp = str + n + 1;
 510                 attr->type = PERF_TYPE_RAW;
 511                 attr->config = config;
 512                 return 1;
 513         }
 514         return 0;
 515 }
 516
 517 static int
 518 parse_numeric_event(const char **strp, struct perf_counter_attr *attr)
 519 {
 520         const char *str = *strp;
 521         char *endp;
 522         unsigned long type;
 523         u64 config;
 524
 525         type = strtoul(str, &endp, 0);
 526         if (endp > str && type < PERF_TYPE_MAX && *endp == ':') {
 527                 str = endp + 1;
 528                 config = strtoul(str, &endp, 0);
 529                 if (endp > str) {
 530                         attr->type = type;
 531                         attr->config = config;
 532                         *strp = endp;
 533                         return 1;
 534                 }
 535         }
 536         return 0;
 537 }
 538
 539 static int
 540 parse_event_modifier(const char **strp, struct perf_counter_attr *attr)
 541 {
 542         const char *str = *strp;
 543         int eu = 1, ek = 1, eh = 1;
 544
 545         if (*str++ != ':')
 546                 return 0;
 547         while (*str) {
 548                 if (*str == 'u')
 549                         eu = 0;
 550                 else if (*str == 'k')
 551                         ek = 0;
 552                 else if (*str == 'h')
 553                         eh = 0;
 554                 else
 555                         break;
 556                 ++str;
 557         }
 558         if (str >= *strp + 2) {
 559                 *strp = str;
 560                 attr->exclude_user   = eu;
 561                 attr->exclude_kernel = ek;
 562                 attr->exclude_hv     = eh;
 563                 return 1;
 564         }
 565         return 0;
 566 }
 567
 568 /*
 569  * Each event can have multiple symbolic names.
 570  * Symbolic names are (almost) exactly matched.
 571  */
 572 static int parse_event_symbols(const char **str, struct perf_counter_attr *attr)
 573 {
 574         if (!(parse_tracepoint_event(str, attr) ||
 575               parse_raw_event(str, attr) ||
 576               parse_numeric_event(str, attr) ||
 577               parse_symbolic_event(str, attr) ||
 578               parse_generic_hw_event(str, attr)))
 579                 return 0;
 580
 581         parse_event_modifier(str, attr);
 582
 583         return 1;
 584 }
 585
 586 int parse_events(const struct option *opt __used, const char *str, int unset __used)
 587 {
 588         struct perf_counter_attr attr;
 589
 590         for (;;) {
 591                 if (nr_counters == MAX_COUNTERS)
 592                         return -1;
 593
 594                 memset(&attr, 0, sizeof(attr));
 595                 if (!parse_event_symbols(&str, &attr))
 596                         return -1;
 597
 598                 if (!(*str == 0 || *str == ',' || isspace(*str)))
 599                         return -1;
 600
 601                 attrs[nr_counters] = attr;
 602                 nr_counters++;
 603
 604                 if (*str == 0)
 605                         break;
 606                 if (*str == ',')
 607                         ++str;
 608                 while (isspace(*str))
 609                         ++str;
 610         }
 611
 612         return 0;
 613 }
 614
 615 static const char * const event_type_descriptors[] = {
 616         "",
 617         "Hardware event",
 618         "Software event",
 619         "Tracepoint event",
 620         "Hardware cache event",
 621 };
 622
 623 /*
 624  * Print the events from <debugfs_mount_point>/tracing/events
 625  */
 626
 627 static void print_tracepoint_events(void)
 628 {
 629         DIR *sys_dir, *evt_dir;
 630         struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
 631         int sys_dir_fd;
 632         char evt_path[MAXPATHLEN];
 633
 634         if (valid_debugfs_mount(debugfs_path))
 635                 return;
 636
 637         sys_dir = opendir(debugfs_path);
 638         if (!sys_dir)
 639                 goto cleanup;
 640         sys_dir_fd = dirfd(sys_dir);
 641
 642         for_each_subsystem(sys_dir, sys_dirent, sys_next) {
 643                 int dfd = openat(sys_dir_fd, sys_dirent.d_name,
 644                                  O_RDONLY|O_DIRECTORY), evt_dir_fd;
 645                 if (dfd == -1)
 646                         continue;
 647                 evt_dir = fdopendir(dfd);
 648                 if (!evt_dir) {
 649                         close(dfd);
 650                         continue;
 651                 }
 652                 evt_dir_fd = dirfd(evt_dir);
 653                 for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
 654                         snprintf(evt_path, MAXPATHLEN, "%s:%s",
 655                                  sys_dirent.d_name, evt_dirent.d_name);
 656                         fprintf(stderr, "  %-42s [%s]\n", evt_path,
 657                                 event_type_descriptors[PERF_TYPE_TRACEPOINT+1]);
 658                 }
 659                 closedir(evt_dir);
 660         }
 661
 662 cleanup:
 663         closedir(sys_dir);
 664 }
 665
 666 /*
 667  * Print the help text for the event symbols:
 668  */
 669 void print_events(void)
 670 {
 671         struct event_symbol *syms = event_symbols;
 672         unsigned int i, type, op, prev_type = -1;
 673         char name[40];
 674
 675         fprintf(stderr, "\n");
 676         fprintf(stderr, "List of pre-defined events (to be used in -e):\n");
 677
 678         for (i = 0; i < ARRAY_SIZE(event_symbols); i++, syms++) {
 679                 type = syms->type + 1;
 680                 if (type >= ARRAY_SIZE(event_type_descriptors))
 681                         type = 0;
 682
 683                 if (type != prev_type)
 684                         fprintf(stderr, "\n");
 685
 686                 if (strlen(syms->alias))
 687                         sprintf(name, "%s OR %s", syms->symbol, syms->alias);
 688                 else
 689                         strcpy(name, syms->symbol);
 690                 fprintf(stderr, "  %-42s [%s]\n", name,
 691                         event_type_descriptors[type]);
 692
 693                 prev_type = type;
 694         }
 695
 696         fprintf(stderr, "\n");
 697         for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) {
 698                 for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) {
 699                         /* skip invalid cache type */
 700                         if (!is_cache_op_valid(type, op))
 701                                 continue;
 702
 703                         for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) {
 704                                 fprintf(stderr, "  %-42s [%s]\n",
 705                                         event_cache_name(type, op, i),
 706                                         event_type_descriptors[4]);
 707                         }
 708                 }
 709         }
 710
 711         fprintf(stderr, "\n");
 712         fprintf(stderr, "  %-42s [raw hardware event descriptor]\n",
 713                 "rNNN");
 714         fprintf(stderr, "\n");
 715
 716         print_tracepoint_events();
 717
 718         exit(129);
 719 }