1#include "../../../include/linux/hw_breakpoint.h" 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 "symbol.h" 9#include "cache.h" 10#include "header.h" 11#include "debugfs.h" 12 13int nr_counters; 14 15struct perf_event_attr attrs[MAX_COUNTERS]; 16char *filters[MAX_COUNTERS]; 17 18struct event_symbol { 19 u8 type; 20 u64 config; 21 const char *symbol; 22 const char *alias; 23}; 24 25enum event_result { 26 EVT_FAILED, 27 EVT_HANDLED, 28 EVT_HANDLED_ALL 29}; 30 31char debugfs_path[MAXPATHLEN]; 32 33#define CHW(x) .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_##x 34#define CSW(x) .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_##x 35 36static struct event_symbol event_symbols[] = { 37 { CHW(CPU_CYCLES), "cpu-cycles", "cycles" }, 38 { CHW(INSTRUCTIONS), "instructions", "" }, 39 { CHW(CACHE_REFERENCES), "cache-references", "" }, 40 { CHW(CACHE_MISSES), "cache-misses", "" }, 41 { CHW(BRANCH_INSTRUCTIONS), "branch-instructions", "branches" }, 42 { CHW(BRANCH_MISSES), "branch-misses", "" }, 43 { CHW(BUS_CYCLES), "bus-cycles", "" }, 44 45 { CSW(CPU_CLOCK), "cpu-clock", "" }, 46 { CSW(TASK_CLOCK), "task-clock", "" }, 47 { CSW(PAGE_FAULTS), "page-faults", "faults" }, 48 { CSW(PAGE_FAULTS_MIN), "minor-faults", "" }, 49 { CSW(PAGE_FAULTS_MAJ), "major-faults", "" }, 50 { CSW(CONTEXT_SWITCHES), "context-switches", "cs" }, 51 { CSW(CPU_MIGRATIONS), "cpu-migrations", "migrations" }, 52 { CSW(ALIGNMENT_FAULTS), "alignment-faults", "" }, 53 { CSW(EMULATION_FAULTS), "emulation-faults", "" }, 54}; 55 56#define __PERF_EVENT_FIELD(config, name) \ 57 ((config & PERF_EVENT_##name##_MASK) >> PERF_EVENT_##name##_SHIFT) 58 59#define PERF_EVENT_RAW(config) __PERF_EVENT_FIELD(config, RAW) 60#define PERF_EVENT_CONFIG(config) __PERF_EVENT_FIELD(config, CONFIG) 61#define PERF_EVENT_TYPE(config) __PERF_EVENT_FIELD(config, TYPE) 62#define PERF_EVENT_ID(config) __PERF_EVENT_FIELD(config, EVENT) 63 64static const char *hw_event_names[] = { 65 "cycles", 66 "instructions", 67 "cache-references", 68 "cache-misses", 69 "branches", 70 "branch-misses", 71 "bus-cycles", 72}; 73 74static const char *sw_event_names[] = { 75 "cpu-clock-msecs", 76 "task-clock-msecs", 77 "page-faults", 78 "context-switches", 79 "CPU-migrations", 80 "minor-faults", 81 "major-faults", 82 "alignment-faults", 83 "emulation-faults", 84}; 85 86#define MAX_ALIASES 8 87 88static const char *hw_cache[][MAX_ALIASES] = { 89 { "L1-dcache", "l1-d", "l1d", "L1-data", }, 90 { "L1-icache", "l1-i", "l1i", "L1-instruction", }, 91 { "LLC", "L2" }, 92 { "dTLB", "d-tlb", "Data-TLB", }, 93 { "iTLB", "i-tlb", "Instruction-TLB", }, 94 { "branch", "branches", "bpu", "btb", "bpc", }, 95}; 96 97static const char *hw_cache_op[][MAX_ALIASES] = { 98 { "load", "loads", "read", }, 99 { "store", "stores", "write", }, 100 { "prefetch", "prefetches", "speculative-read", "speculative-load", }, 101}; 102 103static const char *hw_cache_result[][MAX_ALIASES] = { 104 { "refs", "Reference", "ops", "access", }, 105 { "misses", "miss", }, 106}; 107 108#define C(x) PERF_COUNT_HW_CACHE_##x 109#define CACHE_READ (1 << C(OP_READ)) 110#define CACHE_WRITE (1 << C(OP_WRITE)) 111#define CACHE_PREFETCH (1 << C(OP_PREFETCH)) 112#define COP(x) (1 << x) 113 114/* 115 * cache operartion stat 116 * L1I : Read and prefetch only 117 * ITLB and BPU : Read-only 118 */ 119static unsigned long hw_cache_stat[C(MAX)] = { 120 [C(L1D)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH), 121 [C(L1I)] = (CACHE_READ | CACHE_PREFETCH), 122 [C(LL)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH), 123 [C(DTLB)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH), 124 [C(ITLB)] = (CACHE_READ), 125 [C(BPU)] = (CACHE_READ), 126}; 127 128#define for_each_subsystem(sys_dir, sys_dirent, sys_next) \ 129 while (!readdir_r(sys_dir, &sys_dirent, &sys_next) && sys_next) \ 130 if (sys_dirent.d_type == DT_DIR && \ 131 (strcmp(sys_dirent.d_name, ".")) && \ 132 (strcmp(sys_dirent.d_name, ".."))) 133 134static int tp_event_has_id(struct dirent *sys_dir, struct dirent *evt_dir) 135{ 136 char evt_path[MAXPATHLEN]; 137 int fd; 138 139 snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", debugfs_path, 140 sys_dir->d_name, evt_dir->d_name); 141 fd = open(evt_path, O_RDONLY); 142 if (fd < 0) 143 return -EINVAL; 144 close(fd); 145 146 return 0; 147} 148 149#define for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) \ 150 while (!readdir_r(evt_dir, &evt_dirent, &evt_next) && evt_next) \ 151 if (evt_dirent.d_type == DT_DIR && \ 152 (strcmp(evt_dirent.d_name, ".")) && \ 153 (strcmp(evt_dirent.d_name, "..")) && \ 154 (!tp_event_has_id(&sys_dirent, &evt_dirent))) 155 156#define MAX_EVENT_LENGTH 512 157 158 159struct tracepoint_path *tracepoint_id_to_path(u64 config) 160{ 161 struct tracepoint_path *path = NULL; 162 DIR *sys_dir, *evt_dir; 163 struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent; 164 char id_buf[4]; 165 int fd; 166 u64 id; 167 char evt_path[MAXPATHLEN]; 168 char dir_path[MAXPATHLEN]; 169 170 if (debugfs_valid_mountpoint(debugfs_path)) 171 return NULL; 172 173 sys_dir = opendir(debugfs_path); 174 if (!sys_dir) 175 return NULL; 176 177 for_each_subsystem(sys_dir, sys_dirent, sys_next) { 178 179 snprintf(dir_path, MAXPATHLEN, "%s/%s", debugfs_path, 180 sys_dirent.d_name); 181 evt_dir = opendir(dir_path); 182 if (!evt_dir) 183 continue; 184 185 for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) { 186 187 snprintf(evt_path, MAXPATHLEN, "%s/%s/id", dir_path, 188 evt_dirent.d_name); 189 fd = open(evt_path, O_RDONLY); 190 if (fd < 0) 191 continue; 192 if (read(fd, id_buf, sizeof(id_buf)) < 0) { 193 close(fd); 194 continue; 195 } 196 close(fd); 197 id = atoll(id_buf); 198 if (id == config) { 199 closedir(evt_dir); 200 closedir(sys_dir); 201 path = zalloc(sizeof(*path)); 202 path->system = malloc(MAX_EVENT_LENGTH); 203 if (!path->system) { 204 free(path); 205 return NULL; 206 } 207 path->name = malloc(MAX_EVENT_LENGTH); 208 if (!path->name) { 209 free(path->system); 210 free(path); 211 return NULL; 212 } 213 strncpy(path->system, sys_dirent.d_name, 214 MAX_EVENT_LENGTH); 215 strncpy(path->name, evt_dirent.d_name, 216 MAX_EVENT_LENGTH); 217 return path; 218 } 219 } 220 closedir(evt_dir); 221 } 222 223 closedir(sys_dir); 224 return NULL; 225} 226 227#define TP_PATH_LEN (MAX_EVENT_LENGTH * 2 + 1) 228static const char *tracepoint_id_to_name(u64 config) 229{ 230 static char buf[TP_PATH_LEN]; 231 struct tracepoint_path *path; 232 233 path = tracepoint_id_to_path(config); 234 if (path) { 235 snprintf(buf, TP_PATH_LEN, "%s:%s", path->system, path->name); 236 free(path->name); 237 free(path->system); 238 free(path); 239 } else 240 snprintf(buf, TP_PATH_LEN, "%s:%s", "unknown", "unknown"); 241 242 return buf; 243} 244 245static int is_cache_op_valid(u8 cache_type, u8 cache_op) 246{ 247 if (hw_cache_stat[cache_type] & COP(cache_op)) 248 return 1; /* valid */ 249 else 250 return 0; /* invalid */ 251} 252 253static char *event_cache_name(u8 cache_type, u8 cache_op, u8 cache_result) 254{ 255 static char name[50]; 256 257 if (cache_result) { 258 sprintf(name, "%s-%s-%s", hw_cache[cache_type][0], 259 hw_cache_op[cache_op][0], 260 hw_cache_result[cache_result][0]); 261 } else { 262 sprintf(name, "%s-%s", hw_cache[cache_type][0], 263 hw_cache_op[cache_op][1]); 264 } 265 266 return name; 267} 268 269const char *event_name(int counter) 270{ 271 u64 config = attrs[counter].config; 272 int type = attrs[counter].type; 273 274 return __event_name(type, config); 275} 276 277const char *__event_name(int type, u64 config) 278{ 279 static char buf[32]; 280 281 if (type == PERF_TYPE_RAW) { 282 sprintf(buf, "raw 0x%llx", config); 283 return buf; 284 } 285 286 switch (type) { 287 case PERF_TYPE_HARDWARE: 288 if (config < PERF_COUNT_HW_MAX) 289 return hw_event_names[config]; 290 return "unknown-hardware"; 291 292 case PERF_TYPE_HW_CACHE: { 293 u8 cache_type, cache_op, cache_result; 294 295 cache_type = (config >> 0) & 0xff; 296 if (cache_type > PERF_COUNT_HW_CACHE_MAX) 297 return "unknown-ext-hardware-cache-type"; 298 299 cache_op = (config >> 8) & 0xff; 300 if (cache_op > PERF_COUNT_HW_CACHE_OP_MAX) 301 return "unknown-ext-hardware-cache-op"; 302 303 cache_result = (config >> 16) & 0xff; 304 if (cache_result > PERF_COUNT_HW_CACHE_RESULT_MAX) 305 return "unknown-ext-hardware-cache-result"; 306 307 if (!is_cache_op_valid(cache_type, cache_op)) 308 return "invalid-cache"; 309 310 return event_cache_name(cache_type, cache_op, cache_result); 311 } 312 313 case PERF_TYPE_SOFTWARE: 314 if (config < PERF_COUNT_SW_MAX) 315 return sw_event_names[config]; 316 return "unknown-software"; 317 318 case PERF_TYPE_TRACEPOINT: 319 return tracepoint_id_to_name(config); 320 321 default: 322 break; 323 } 324 325 return "unknown"; 326} 327 328static int parse_aliases(const char **str, const char *names[][MAX_ALIASES], int size) 329{ 330 int i, j; 331 int n, longest = -1; 332 333 for (i = 0; i < size; i++) { 334 for (j = 0; j < MAX_ALIASES && names[i][j]; j++) { 335 n = strlen(names[i][j]); 336 if (n > longest && !strncasecmp(*str, names[i][j], n)) 337 longest = n; 338 } 339 if (longest > 0) { 340 *str += longest; 341 return i; 342 } 343 } 344 345 return -1; 346} 347 348static enum event_result 349parse_generic_hw_event(const char **str, struct perf_event_attr *attr) 350{ 351 const char *s = *str; 352 int cache_type = -1, cache_op = -1, cache_result = -1; 353 354 cache_type = parse_aliases(&s, hw_cache, PERF_COUNT_HW_CACHE_MAX); 355 /* 356 * No fallback - if we cannot get a clear cache type 357 * then bail out: 358 */ 359 if (cache_type == -1) 360 return EVT_FAILED; 361 362 while ((cache_op == -1 || cache_result == -1) && *s == '-') { 363 ++s; 364 365 if (cache_op == -1) { 366 cache_op = parse_aliases(&s, hw_cache_op, 367 PERF_COUNT_HW_CACHE_OP_MAX); 368 if (cache_op >= 0) { 369 if (!is_cache_op_valid(cache_type, cache_op)) 370 return 0; 371 continue; 372 } 373 } 374 375 if (cache_result == -1) { 376 cache_result = parse_aliases(&s, hw_cache_result, 377 PERF_COUNT_HW_CACHE_RESULT_MAX); 378 if (cache_result >= 0) 379 continue; 380 } 381 382 /* 383 * Can't parse this as a cache op or result, so back up 384 * to the '-'. 385 */ 386 --s; 387 break; 388 } 389 390 /* 391 * Fall back to reads: 392 */ 393 if (cache_op == -1) 394 cache_op = PERF_COUNT_HW_CACHE_OP_READ; 395 396 /* 397 * Fall back to accesses: 398 */ 399 if (cache_result == -1) 400 cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS; 401 402 attr->config = cache_type | (cache_op << 8) | (cache_result << 16); 403 attr->type = PERF_TYPE_HW_CACHE; 404 405 *str = s; 406 return EVT_HANDLED; 407} 408 409static enum event_result 410parse_single_tracepoint_event(char *sys_name, 411 const char *evt_name, 412 unsigned int evt_length, 413 struct perf_event_attr *attr, 414 const char **strp) 415{ 416 char evt_path[MAXPATHLEN]; 417 char id_buf[4]; 418 u64 id; 419 int fd; 420 421 snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", debugfs_path, 422 sys_name, evt_name); 423 424 fd = open(evt_path, O_RDONLY); 425 if (fd < 0) 426 return EVT_FAILED; 427 428 if (read(fd, id_buf, sizeof(id_buf)) < 0) { 429 close(fd); 430 return EVT_FAILED; 431 } 432 433 close(fd); 434 id = atoll(id_buf); 435 attr->config = id; 436 attr->type = PERF_TYPE_TRACEPOINT; 437 *strp = evt_name + evt_length; 438 439 attr->sample_type |= PERF_SAMPLE_RAW; 440 attr->sample_type |= PERF_SAMPLE_TIME; 441 attr->sample_type |= PERF_SAMPLE_CPU; 442 443 attr->sample_period = 1; 444 445 446 return EVT_HANDLED; 447} 448 449/* sys + ':' + event + ':' + flags*/ 450#define MAX_EVOPT_LEN (MAX_EVENT_LENGTH * 2 + 2 + 128) 451static enum event_result 452parse_multiple_tracepoint_event(char *sys_name, const char *evt_exp, 453 char *flags) 454{ 455 char evt_path[MAXPATHLEN]; 456 struct dirent *evt_ent; 457 DIR *evt_dir; 458 459 snprintf(evt_path, MAXPATHLEN, "%s/%s", debugfs_path, sys_name); 460 evt_dir = opendir(evt_path); 461 462 if (!evt_dir) { 463 perror("Can't open event dir"); 464 return EVT_FAILED; 465 } 466 467 while ((evt_ent = readdir(evt_dir))) { 468 char event_opt[MAX_EVOPT_LEN + 1]; 469 int len; 470 471 if (!strcmp(evt_ent->d_name, ".") 472 || !strcmp(evt_ent->d_name, "..") 473 || !strcmp(evt_ent->d_name, "enable") 474 || !strcmp(evt_ent->d_name, "filter")) 475 continue; 476 477 if (!strglobmatch(evt_ent->d_name, evt_exp)) 478 continue; 479 480 len = snprintf(event_opt, MAX_EVOPT_LEN, "%s:%s%s%s", sys_name, 481 evt_ent->d_name, flags ? ":" : "", 482 flags ?: ""); 483 if (len < 0) 484 return EVT_FAILED; 485 486 if (parse_events(NULL, event_opt, 0)) 487 return EVT_FAILED; 488 } 489 490 return EVT_HANDLED_ALL; 491} 492 493 494static enum event_result parse_tracepoint_event(const char **strp, 495 struct perf_event_attr *attr) 496{ 497 const char *evt_name; 498 char *flags; 499 char sys_name[MAX_EVENT_LENGTH]; 500 unsigned int sys_length, evt_length; 501 502 if (debugfs_valid_mountpoint(debugfs_path)) 503 return 0; 504 505 evt_name = strchr(*strp, ':'); 506 if (!evt_name) 507 return EVT_FAILED; 508 509 sys_length = evt_name - *strp; 510 if (sys_length >= MAX_EVENT_LENGTH) 511 return 0; 512 513 strncpy(sys_name, *strp, sys_length); 514 sys_name[sys_length] = '\0'; 515 evt_name = evt_name + 1; 516 517 flags = strchr(evt_name, ':'); 518 if (flags) { 519 /* split it out: */ 520 evt_name = strndup(evt_name, flags - evt_name); 521 flags++; 522 } 523 524 evt_length = strlen(evt_name); 525 if (evt_length >= MAX_EVENT_LENGTH) 526 return EVT_FAILED; 527 528 if (strpbrk(evt_name, "*?")) { 529 *strp = evt_name + evt_length; 530 return parse_multiple_tracepoint_event(sys_name, evt_name, 531 flags); 532 } else 533 return parse_single_tracepoint_event(sys_name, evt_name, 534 evt_length, attr, strp); 535} 536 537static enum event_result 538parse_breakpoint_type(const char *type, const char **strp, 539 struct perf_event_attr *attr) 540{ 541 int i; 542 543 for (i = 0; i < 3; i++) { 544 if (!type[i]) 545 break; 546 547 switch (type[i]) { 548 case 'r': 549 attr->bp_type |= HW_BREAKPOINT_R; 550 break; 551 case 'w': 552 attr->bp_type |= HW_BREAKPOINT_W; 553 break; 554 case 'x': 555 attr->bp_type |= HW_BREAKPOINT_X; 556 break; 557 default: 558 return EVT_FAILED; 559 } 560 } 561 if (!attr->bp_type) /* Default */ 562 attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W; 563 564 *strp = type + i; 565 566 return EVT_HANDLED; 567} 568 569static enum event_result 570parse_breakpoint_event(const char **strp, struct perf_event_attr *attr) 571{ 572 const char *target; 573 const char *type; 574 char *endaddr; 575 u64 addr; 576 enum event_result err; 577 578 target = strchr(*strp, ':'); 579 if (!target) 580 return EVT_FAILED; 581 582 if (strncmp(*strp, "mem", target - *strp) != 0) 583 return EVT_FAILED; 584 585 target++; 586 587 addr = strtoull(target, &endaddr, 0); 588 if (target == endaddr) 589 return EVT_FAILED; 590 591 attr->bp_addr = addr; 592 *strp = endaddr; 593 594 type = strchr(target, ':'); 595 596 /* If no type is defined, just rw as default */ 597 if (!type) { 598 attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W; 599 } else { 600 err = parse_breakpoint_type(++type, strp, attr); 601 if (err == EVT_FAILED) 602 return EVT_FAILED; 603 } 604 605 /* 606 * We should find a nice way to override the access length 607 * Provide some defaults for now 608 */ 609 if (attr->bp_type == HW_BREAKPOINT_X) 610 attr->bp_len = sizeof(long); 611 else 612 attr->bp_len = HW_BREAKPOINT_LEN_4; 613 614 attr->type = PERF_TYPE_BREAKPOINT; 615 616 return EVT_HANDLED; 617} 618 619static int check_events(const char *str, unsigned int i) 620{ 621 int n; 622 623 n = strlen(event_symbols[i].symbol); 624 if (!strncmp(str, event_symbols[i].symbol, n)) 625 return n; 626 627 n = strlen(event_symbols[i].alias); 628 if (n) 629 if (!strncmp(str, event_symbols[i].alias, n)) 630 return n; 631 return 0; 632} 633 634static enum event_result 635parse_symbolic_event(const char **strp, struct perf_event_attr *attr) 636{ 637 const char *str = *strp; 638 unsigned int i; 639 int n; 640 641 for (i = 0; i < ARRAY_SIZE(event_symbols); i++) { 642 n = check_events(str, i); 643 if (n > 0) { 644 attr->type = event_symbols[i].type; 645 attr->config = event_symbols[i].config; 646 *strp = str + n; 647 return EVT_HANDLED; 648 } 649 } 650 return EVT_FAILED; 651} 652 653static enum event_result 654parse_raw_event(const char **strp, struct perf_event_attr *attr) 655{ 656 const char *str = *strp; 657 u64 config; 658 int n; 659 660 if (*str != 'r') 661 return EVT_FAILED; 662 n = hex2u64(str + 1, &config); 663 if (n > 0) { 664 *strp = str + n + 1; 665 attr->type = PERF_TYPE_RAW; 666 attr->config = config; 667 return EVT_HANDLED; 668 } 669 return EVT_FAILED; 670} 671 672static enum event_result 673parse_numeric_event(const char **strp, struct perf_event_attr *attr) 674{ 675 const char *str = *strp; 676 char *endp; 677 unsigned long type; 678 u64 config; 679 680 type = strtoul(str, &endp, 0); 681 if (endp > str && type < PERF_TYPE_MAX && *endp == ':') { 682 str = endp + 1; 683 config = strtoul(str, &endp, 0); 684 if (endp > str) { 685 attr->type = type; 686 attr->config = config; 687 *strp = endp; 688 return EVT_HANDLED; 689 } 690 } 691 return EVT_FAILED; 692} 693 694static enum event_result 695parse_event_modifier(const char **strp, struct perf_event_attr *attr) 696{ 697 const char *str = *strp; 698 int exclude = 0; 699 int eu = 0, ek = 0, eh = 0, precise = 0; 700 701 if (*str++ != ':') 702 return 0; 703 while (*str) { 704 if (*str == 'u') { 705 if (!exclude) 706 exclude = eu = ek = eh = 1; 707 eu = 0; 708 } else if (*str == 'k') { 709 if (!exclude) 710 exclude = eu = ek = eh = 1; 711 ek = 0; 712 } else if (*str == 'h') { 713 if (!exclude) 714 exclude = eu = ek = eh = 1; 715 eh = 0; 716 } else if (*str == 'p') { 717 precise++; 718 } else 719 break; 720 721 ++str; 722 } 723 if (str >= *strp + 2) { 724 *strp = str; 725 attr->exclude_user = eu; 726 attr->exclude_kernel = ek; 727 attr->exclude_hv = eh; 728 attr->precise_ip = precise; 729 return 1; 730 } 731 return 0; 732} 733 734/* 735 * Each event can have multiple symbolic names. 736 * Symbolic names are (almost) exactly matched. 737 */ 738static enum event_result 739parse_event_symbols(const char **str, struct perf_event_attr *attr) 740{ 741 enum event_result ret; 742 743 ret = parse_tracepoint_event(str, attr); 744 if (ret != EVT_FAILED) 745 goto modifier; 746 747 ret = parse_raw_event(str, attr); 748 if (ret != EVT_FAILED) 749 goto modifier; 750 751 ret = parse_numeric_event(str, attr); 752 if (ret != EVT_FAILED) 753 goto modifier; 754 755 ret = parse_symbolic_event(str, attr); 756 if (ret != EVT_FAILED) 757 goto modifier; 758 759 ret = parse_generic_hw_event(str, attr); 760 if (ret != EVT_FAILED) 761 goto modifier; 762 763 ret = parse_breakpoint_event(str, attr); 764 if (ret != EVT_FAILED) 765 goto modifier; 766 767 fprintf(stderr, "invalid or unsupported event: '%s'\n", *str); 768 fprintf(stderr, "Run 'perf list' for a list of valid events\n"); 769 return EVT_FAILED; 770 771modifier: 772 parse_event_modifier(str, attr); 773 774 return ret; 775} 776 777static int store_event_type(const char *orgname) 778{ 779 char filename[PATH_MAX], *c; 780 FILE *file; 781 int id, n; 782 783 sprintf(filename, "%s/", debugfs_path); 784 strncat(filename, orgname, strlen(orgname)); 785 strcat(filename, "/id"); 786 787 c = strchr(filename, ':'); 788 if (c) 789 *c = '/'; 790 791 file = fopen(filename, "r"); 792 if (!file) 793 return 0; 794 n = fscanf(file, "%i", &id); 795 fclose(file); 796 if (n < 1) { 797 pr_err("cannot store event ID\n"); 798 return -EINVAL; 799 } 800 return perf_header__push_event(id, orgname); 801} 802 803int parse_events(const struct option *opt __used, const char *str, int unset __used) 804{ 805 struct perf_event_attr attr; 806 enum event_result ret; 807 808 if (strchr(str, ':')) 809 if (store_event_type(str) < 0) 810 return -1; 811 812 for (;;) { 813 if (nr_counters == MAX_COUNTERS) 814 return -1; 815 816 memset(&attr, 0, sizeof(attr)); 817 ret = parse_event_symbols(&str, &attr); 818 if (ret == EVT_FAILED) 819 return -1; 820 821 if (!(*str == 0 || *str == ',' || isspace(*str))) 822 return -1; 823 824 if (ret != EVT_HANDLED_ALL) { 825 attrs[nr_counters] = attr; 826 nr_counters++; 827 } 828 829 if (*str == 0) 830 break; 831 if (*str == ',') 832 ++str; 833 while (isspace(*str)) 834 ++str; 835 } 836 837 return 0; 838} 839 840int parse_filter(const struct option *opt __used, const char *str, 841 int unset __used) 842{ 843 int i = nr_counters - 1; 844 int len = strlen(str); 845 846 if (i < 0 || attrs[i].type != PERF_TYPE_TRACEPOINT) { 847 fprintf(stderr, 848 "-F option should follow a -e tracepoint option\n"); 849 return -1; 850 } 851 852 filters[i] = malloc(len + 1); 853 if (!filters[i]) { 854 fprintf(stderr, "not enough memory to hold filter string\n"); 855 return -1; 856 } 857 strcpy(filters[i], str); 858 859 return 0; 860} 861 862static const char * const event_type_descriptors[] = { 863 "Hardware event", 864 "Software event", 865 "Tracepoint event", 866 "Hardware cache event", 867 "Raw hardware event descriptor", 868 "Hardware breakpoint", 869}; 870 871/* 872 * Print the events from <debugfs_mount_point>/tracing/events 873 */ 874 875static void print_tracepoint_events(void) 876{ 877 DIR *sys_dir, *evt_dir; 878 struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent; 879 char evt_path[MAXPATHLEN]; 880 char dir_path[MAXPATHLEN]; 881 882 if (debugfs_valid_mountpoint(debugfs_path)) 883 return; 884 885 sys_dir = opendir(debugfs_path); 886 if (!sys_dir) 887 return; 888 889 for_each_subsystem(sys_dir, sys_dirent, sys_next) { 890 891 snprintf(dir_path, MAXPATHLEN, "%s/%s", debugfs_path, 892 sys_dirent.d_name); 893 evt_dir = opendir(dir_path); 894 if (!evt_dir) 895 continue; 896 897 for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) { 898 snprintf(evt_path, MAXPATHLEN, "%s:%s", 899 sys_dirent.d_name, evt_dirent.d_name); 900 printf(" %-42s [%s]\n", evt_path, 901 event_type_descriptors[PERF_TYPE_TRACEPOINT]); 902 } 903 closedir(evt_dir); 904 } 905 closedir(sys_dir); 906} 907 908/* 909 * Print the help text for the event symbols: 910 */ 911void print_events(void) 912{ 913 struct event_symbol *syms = event_symbols; 914 unsigned int i, type, op, prev_type = -1; 915 char name[40]; 916 917 printf("\n"); 918 printf("List of pre-defined events (to be used in -e):\n"); 919 920 for (i = 0; i < ARRAY_SIZE(event_symbols); i++, syms++) { 921 type = syms->type; 922 923 if (type != prev_type) 924 printf("\n"); 925 926 if (strlen(syms->alias)) 927 sprintf(name, "%s OR %s", syms->symbol, syms->alias); 928 else 929 strcpy(name, syms->symbol); 930 printf(" %-42s [%s]\n", name, 931 event_type_descriptors[type]); 932 933 prev_type = type; 934 } 935 936 printf("\n"); 937 for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) { 938 for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) { 939 /* skip invalid cache type */ 940 if (!is_cache_op_valid(type, op)) 941 continue; 942 943 for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) { 944 printf(" %-42s [%s]\n", 945 event_cache_name(type, op, i), 946 event_type_descriptors[PERF_TYPE_HW_CACHE]); 947 } 948 } 949 } 950 951 printf("\n"); 952 printf(" %-42s [%s]\n", 953 "rNNN (see 'perf list --help' on how to encode it)", 954 event_type_descriptors[PERF_TYPE_RAW]); 955 printf("\n"); 956 957 printf(" %-42s [%s]\n", 958 "mem:<addr>[:access]", 959 event_type_descriptors[PERF_TYPE_BREAKPOINT]); 960 printf("\n"); 961 962 print_tracepoint_events(); 963 964 exit(129); 965} 966