1 #include "builtin.h" 2 3 #include "perf.h" 4 #include "util/cache.h" 5 #include "util/debug.h" 6 #include "util/exec_cmd.h" 7 #include "util/header.h" 8 #include "util/parse-options.h" 9 #include "util/session.h" 10 #include "util/symbol.h" 11 #include "util/thread.h" 12 #include "util/trace-event.h" 13 #include "util/util.h" 14 #include "util/evlist.h" 15 #include "util/evsel.h" 16 17 static char const *script_name; 18 static char const *generate_script_lang; 19 static bool debug_mode; 20 static u64 last_timestamp; 21 static u64 nr_unordered; 22 extern const struct option record_options[]; 23 static bool no_callchain; 24 25 enum perf_output_field { 26 PERF_OUTPUT_COMM = 1U << 0, 27 PERF_OUTPUT_TID = 1U << 1, 28 PERF_OUTPUT_PID = 1U << 2, 29 PERF_OUTPUT_TIME = 1U << 3, 30 PERF_OUTPUT_CPU = 1U << 4, 31 PERF_OUTPUT_EVNAME = 1U << 5, 32 PERF_OUTPUT_TRACE = 1U << 6, 33 PERF_OUTPUT_SYM = 1U << 7, 34 }; 35 36 struct output_option { 37 const char *str; 38 enum perf_output_field field; 39 } all_output_options[] = { 40 {.str = "comm", .field = PERF_OUTPUT_COMM}, 41 {.str = "tid", .field = PERF_OUTPUT_TID}, 42 {.str = "pid", .field = PERF_OUTPUT_PID}, 43 {.str = "time", .field = PERF_OUTPUT_TIME}, 44 {.str = "cpu", .field = PERF_OUTPUT_CPU}, 45 {.str = "event", .field = PERF_OUTPUT_EVNAME}, 46 {.str = "trace", .field = PERF_OUTPUT_TRACE}, 47 {.str = "sym", .field = PERF_OUTPUT_SYM}, 48 }; 49 50 /* default set to maintain compatibility with current format */ 51 static struct { 52 bool user_set; 53 bool wildcard_set; 54 u64 fields; 55 u64 invalid_fields; 56 } output[PERF_TYPE_MAX] = { 57 58 [PERF_TYPE_HARDWARE] = { 59 .user_set = false, 60 61 .fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID | 62 PERF_OUTPUT_CPU | PERF_OUTPUT_TIME | 63 PERF_OUTPUT_EVNAME | PERF_OUTPUT_SYM, 64 65 .invalid_fields = PERF_OUTPUT_TRACE, 66 }, 67 68 [PERF_TYPE_SOFTWARE] = { 69 .user_set = false, 70 71 .fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID | 72 PERF_OUTPUT_CPU | PERF_OUTPUT_TIME | 73 PERF_OUTPUT_EVNAME | PERF_OUTPUT_SYM, 74 75 .invalid_fields = PERF_OUTPUT_TRACE, 76 }, 77 78 [PERF_TYPE_TRACEPOINT] = { 79 .user_set = false, 80 81 .fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID | 82 PERF_OUTPUT_CPU | PERF_OUTPUT_TIME | 83 PERF_OUTPUT_EVNAME | PERF_OUTPUT_TRACE, 84 }, 85 86 [PERF_TYPE_RAW] = { 87 .user_set = false, 88 89 .fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID | 90 PERF_OUTPUT_CPU | PERF_OUTPUT_TIME | 91 PERF_OUTPUT_EVNAME | PERF_OUTPUT_SYM, 92 93 .invalid_fields = PERF_OUTPUT_TRACE, 94 }, 95 }; 96 97 static bool output_set_by_user(void) 98 { 99 int j; 100 for (j = 0; j < PERF_TYPE_MAX; ++j) { 101 if (output[j].user_set) 102 return true; 103 } 104 return false; 105 } 106 107 static const char *output_field2str(enum perf_output_field field) 108 { 109 int i, imax = ARRAY_SIZE(all_output_options); 110 const char *str = ""; 111 112 for (i = 0; i < imax; ++i) { 113 if (all_output_options[i].field == field) { 114 str = all_output_options[i].str; 115 break; 116 } 117 } 118 return str; 119 } 120 121 #define PRINT_FIELD(x) (output[attr->type].fields & PERF_OUTPUT_##x) 122 123 static int perf_event_attr__check_stype(struct perf_event_attr *attr, 124 u64 sample_type, const char *sample_msg, 125 enum perf_output_field field) 126 { 127 int type = attr->type; 128 const char *evname; 129 130 if (attr->sample_type & sample_type) 131 return 0; 132 133 if (output[type].user_set) { 134 evname = __event_name(attr->type, attr->config); 135 pr_err("Samples for '%s' event do not have %s attribute set. " 136 "Cannot print '%s' field.\n", 137 evname, sample_msg, output_field2str(field)); 138 return -1; 139 } 140 141 /* user did not ask for it explicitly so remove from the default list */ 142 output[type].fields &= ~field; 143 evname = __event_name(attr->type, attr->config); 144 pr_debug("Samples for '%s' event do not have %s attribute set. " 145 "Skipping '%s' field.\n", 146 evname, sample_msg, output_field2str(field)); 147 148 return 0; 149 } 150 151 static int perf_evsel__check_attr(struct perf_evsel *evsel, 152 struct perf_session *session) 153 { 154 struct perf_event_attr *attr = &evsel->attr; 155 156 if (PRINT_FIELD(TRACE) && 157 !perf_session__has_traces(session, "record -R")) 158 return -EINVAL; 159 160 if (PRINT_FIELD(SYM)) { 161 if (perf_event_attr__check_stype(attr, PERF_SAMPLE_IP, "IP", 162 PERF_OUTPUT_SYM)) 163 return -EINVAL; 164 165 if (!no_callchain && 166 !(attr->sample_type & PERF_SAMPLE_CALLCHAIN)) 167 symbol_conf.use_callchain = false; 168 } 169 170 if ((PRINT_FIELD(PID) || PRINT_FIELD(TID)) && 171 perf_event_attr__check_stype(attr, PERF_SAMPLE_TID, "TID", 172 PERF_OUTPUT_TID|PERF_OUTPUT_PID)) 173 return -EINVAL; 174 175 if (PRINT_FIELD(TIME) && 176 perf_event_attr__check_stype(attr, PERF_SAMPLE_TIME, "TIME", 177 PERF_OUTPUT_TIME)) 178 return -EINVAL; 179 180 if (PRINT_FIELD(CPU) && 181 perf_event_attr__check_stype(attr, PERF_SAMPLE_CPU, "CPU", 182 PERF_OUTPUT_CPU)) 183 return -EINVAL; 184 185 return 0; 186 } 187 188 /* 189 * verify all user requested events exist and the samples 190 * have the expected data 191 */ 192 static int perf_session__check_output_opt(struct perf_session *session) 193 { 194 int j; 195 struct perf_evsel *evsel; 196 197 for (j = 0; j < PERF_TYPE_MAX; ++j) { 198 evsel = perf_session__find_first_evtype(session, j); 199 200 /* 201 * even if fields is set to 0 (ie., show nothing) event must 202 * exist if user explicitly includes it on the command line 203 */ 204 if (!evsel && output[j].user_set && !output[j].wildcard_set) { 205 pr_err("%s events do not exist. " 206 "Remove corresponding -f option to proceed.\n", 207 event_type(j)); 208 return -1; 209 } 210 211 if (evsel && output[j].fields && 212 perf_evsel__check_attr(evsel, session)) 213 return -1; 214 } 215 216 return 0; 217 } 218 219 static void print_sample_start(struct perf_sample *sample, 220 struct thread *thread, 221 struct perf_event_attr *attr) 222 { 223 int type; 224 struct event *event; 225 const char *evname = NULL; 226 unsigned long secs; 227 unsigned long usecs; 228 unsigned long long nsecs; 229 230 if (PRINT_FIELD(COMM)) { 231 if (latency_format) 232 printf("%8.8s ", thread->comm); 233 else if (PRINT_FIELD(SYM) && symbol_conf.use_callchain) 234 printf("%s ", thread->comm); 235 else 236 printf("%16s ", thread->comm); 237 } 238 239 if (PRINT_FIELD(PID) && PRINT_FIELD(TID)) 240 printf("%5d/%-5d ", sample->pid, sample->tid); 241 else if (PRINT_FIELD(PID)) 242 printf("%5d ", sample->pid); 243 else if (PRINT_FIELD(TID)) 244 printf("%5d ", sample->tid); 245 246 if (PRINT_FIELD(CPU)) { 247 if (latency_format) 248 printf("%3d ", sample->cpu); 249 else 250 printf("[%03d] ", sample->cpu); 251 } 252 253 if (PRINT_FIELD(TIME)) { 254 nsecs = sample->time; 255 secs = nsecs / NSECS_PER_SEC; 256 nsecs -= secs * NSECS_PER_SEC; 257 usecs = nsecs / NSECS_PER_USEC; 258 printf("%5lu.%06lu: ", secs, usecs); 259 } 260 261 if (PRINT_FIELD(EVNAME)) { 262 if (attr->type == PERF_TYPE_TRACEPOINT) { 263 type = trace_parse_common_type(sample->raw_data); 264 event = trace_find_event(type); 265 if (event) 266 evname = event->name; 267 } else 268 evname = __event_name(attr->type, attr->config); 269 270 printf("%s: ", evname ? evname : "(unknown)"); 271 } 272 } 273 274 static void process_event(union perf_event *event __unused, 275 struct perf_sample *sample, 276 struct perf_evsel *evsel, 277 struct perf_session *session, 278 struct thread *thread) 279 { 280 struct perf_event_attr *attr = &evsel->attr; 281 282 if (output[attr->type].fields == 0) 283 return; 284 285 print_sample_start(sample, thread, attr); 286 287 if (PRINT_FIELD(TRACE)) 288 print_trace_event(sample->cpu, sample->raw_data, 289 sample->raw_size); 290 291 if (PRINT_FIELD(SYM)) { 292 if (!symbol_conf.use_callchain) 293 printf(" "); 294 else 295 printf("\n"); 296 perf_session__print_symbols(event, sample, session); 297 } 298 299 printf("\n"); 300 } 301 302 static int default_start_script(const char *script __unused, 303 int argc __unused, 304 const char **argv __unused) 305 { 306 return 0; 307 } 308 309 static int default_stop_script(void) 310 { 311 return 0; 312 } 313 314 static int default_generate_script(const char *outfile __unused) 315 { 316 return 0; 317 } 318 319 static struct scripting_ops default_scripting_ops = { 320 .start_script = default_start_script, 321 .stop_script = default_stop_script, 322 .process_event = process_event, 323 .generate_script = default_generate_script, 324 }; 325 326 static struct scripting_ops *scripting_ops; 327 328 static void setup_scripting(void) 329 { 330 setup_perl_scripting(); 331 setup_python_scripting(); 332 333 scripting_ops = &default_scripting_ops; 334 } 335 336 static int cleanup_scripting(void) 337 { 338 pr_debug("\nperf script stopped\n"); 339 340 return scripting_ops->stop_script(); 341 } 342 343 static char const *input_name = "perf.data"; 344 345 static int process_sample_event(union perf_event *event, 346 struct perf_sample *sample, 347 struct perf_evsel *evsel, 348 struct perf_session *session) 349 { 350 struct thread *thread = perf_session__findnew(session, event->ip.pid); 351 352 if (thread == NULL) { 353 pr_debug("problem processing %d event, skipping it.\n", 354 event->header.type); 355 return -1; 356 } 357 358 if (debug_mode) { 359 if (sample->time < last_timestamp) { 360 pr_err("Samples misordered, previous: %" PRIu64 361 " this: %" PRIu64 "\n", last_timestamp, 362 sample->time); 363 nr_unordered++; 364 } 365 last_timestamp = sample->time; 366 return 0; 367 } 368 scripting_ops->process_event(event, sample, evsel, session, thread); 369 370 session->hists.stats.total_period += sample->period; 371 return 0; 372 } 373 374 static struct perf_event_ops event_ops = { 375 .sample = process_sample_event, 376 .mmap = perf_event__process_mmap, 377 .comm = perf_event__process_comm, 378 .exit = perf_event__process_task, 379 .fork = perf_event__process_task, 380 .attr = perf_event__process_attr, 381 .event_type = perf_event__process_event_type, 382 .tracing_data = perf_event__process_tracing_data, 383 .build_id = perf_event__process_build_id, 384 .ordered_samples = true, 385 .ordering_requires_timestamps = true, 386 }; 387 388 extern volatile int session_done; 389 390 static void sig_handler(int sig __unused) 391 { 392 session_done = 1; 393 } 394 395 static int __cmd_script(struct perf_session *session) 396 { 397 int ret; 398 399 signal(SIGINT, sig_handler); 400 401 ret = perf_session__process_events(session, &event_ops); 402 403 if (debug_mode) 404 pr_err("Misordered timestamps: %" PRIu64 "\n", nr_unordered); 405 406 return ret; 407 } 408 409 struct script_spec { 410 struct list_head node; 411 struct scripting_ops *ops; 412 char spec[0]; 413 }; 414 415 static LIST_HEAD(script_specs); 416 417 static struct script_spec *script_spec__new(const char *spec, 418 struct scripting_ops *ops) 419 { 420 struct script_spec *s = malloc(sizeof(*s) + strlen(spec) + 1); 421 422 if (s != NULL) { 423 strcpy(s->spec, spec); 424 s->ops = ops; 425 } 426 427 return s; 428 } 429 430 static void script_spec__delete(struct script_spec *s) 431 { 432 free(s->spec); 433 free(s); 434 } 435 436 static void script_spec__add(struct script_spec *s) 437 { 438 list_add_tail(&s->node, &script_specs); 439 } 440 441 static struct script_spec *script_spec__find(const char *spec) 442 { 443 struct script_spec *s; 444 445 list_for_each_entry(s, &script_specs, node) 446 if (strcasecmp(s->spec, spec) == 0) 447 return s; 448 return NULL; 449 } 450 451 static struct script_spec *script_spec__findnew(const char *spec, 452 struct scripting_ops *ops) 453 { 454 struct script_spec *s = script_spec__find(spec); 455 456 if (s) 457 return s; 458 459 s = script_spec__new(spec, ops); 460 if (!s) 461 goto out_delete_spec; 462 463 script_spec__add(s); 464 465 return s; 466 467 out_delete_spec: 468 script_spec__delete(s); 469 470 return NULL; 471 } 472 473 int script_spec_register(const char *spec, struct scripting_ops *ops) 474 { 475 struct script_spec *s; 476 477 s = script_spec__find(spec); 478 if (s) 479 return -1; 480 481 s = script_spec__findnew(spec, ops); 482 if (!s) 483 return -1; 484 485 return 0; 486 } 487 488 static struct scripting_ops *script_spec__lookup(const char *spec) 489 { 490 struct script_spec *s = script_spec__find(spec); 491 if (!s) 492 return NULL; 493 494 return s->ops; 495 } 496 497 static void list_available_languages(void) 498 { 499 struct script_spec *s; 500 501 fprintf(stderr, "\n"); 502 fprintf(stderr, "Scripting language extensions (used in " 503 "perf script -s [spec:]script.[spec]):\n\n"); 504 505 list_for_each_entry(s, &script_specs, node) 506 fprintf(stderr, " %-42s [%s]\n", s->spec, s->ops->name); 507 508 fprintf(stderr, "\n"); 509 } 510 511 static int parse_scriptname(const struct option *opt __used, 512 const char *str, int unset __used) 513 { 514 char spec[PATH_MAX]; 515 const char *script, *ext; 516 int len; 517 518 if (strcmp(str, "lang") == 0) { 519 list_available_languages(); 520 exit(0); 521 } 522 523 script = strchr(str, ':'); 524 if (script) { 525 len = script - str; 526 if (len >= PATH_MAX) { 527 fprintf(stderr, "invalid language specifier"); 528 return -1; 529 } 530 strncpy(spec, str, len); 531 spec[len] = '\0'; 532 scripting_ops = script_spec__lookup(spec); 533 if (!scripting_ops) { 534 fprintf(stderr, "invalid language specifier"); 535 return -1; 536 } 537 script++; 538 } else { 539 script = str; 540 ext = strrchr(script, '.'); 541 if (!ext) { 542 fprintf(stderr, "invalid script extension"); 543 return -1; 544 } 545 scripting_ops = script_spec__lookup(++ext); 546 if (!scripting_ops) { 547 fprintf(stderr, "invalid script extension"); 548 return -1; 549 } 550 } 551 552 script_name = strdup(script); 553 554 return 0; 555 } 556 557 static int parse_output_fields(const struct option *opt __used, 558 const char *arg, int unset __used) 559 { 560 char *tok; 561 int i, imax = sizeof(all_output_options) / sizeof(struct output_option); 562 int j; 563 int rc = 0; 564 char *str = strdup(arg); 565 int type = -1; 566 567 if (!str) 568 return -ENOMEM; 569 570 /* first word can state for which event type the user is specifying 571 * the fields. If no type exists, the specified fields apply to all 572 * event types found in the file minus the invalid fields for a type. 573 */ 574 tok = strchr(str, ':'); 575 if (tok) { 576 *tok = '\0'; 577 tok++; 578 if (!strcmp(str, "hw")) 579 type = PERF_TYPE_HARDWARE; 580 else if (!strcmp(str, "sw")) 581 type = PERF_TYPE_SOFTWARE; 582 else if (!strcmp(str, "trace")) 583 type = PERF_TYPE_TRACEPOINT; 584 else if (!strcmp(str, "raw")) 585 type = PERF_TYPE_RAW; 586 else { 587 fprintf(stderr, "Invalid event type in field string.\n"); 588 return -EINVAL; 589 } 590 591 if (output[type].user_set) 592 pr_warning("Overriding previous field request for %s events.\n", 593 event_type(type)); 594 595 output[type].fields = 0; 596 output[type].user_set = true; 597 output[type].wildcard_set = false; 598 599 } else { 600 tok = str; 601 if (strlen(str) == 0) { 602 fprintf(stderr, 603 "Cannot set fields to 'none' for all event types.\n"); 604 rc = -EINVAL; 605 goto out; 606 } 607 608 if (output_set_by_user()) 609 pr_warning("Overriding previous field request for all events.\n"); 610 611 for (j = 0; j < PERF_TYPE_MAX; ++j) { 612 output[j].fields = 0; 613 output[j].user_set = true; 614 output[j].wildcard_set = true; 615 } 616 } 617 618 tok = strtok(tok, ","); 619 while (tok) { 620 for (i = 0; i < imax; ++i) { 621 if (strcmp(tok, all_output_options[i].str) == 0) 622 break; 623 } 624 if (i == imax) { 625 fprintf(stderr, "Invalid field requested.\n"); 626 rc = -EINVAL; 627 goto out; 628 } 629 630 if (type == -1) { 631 /* add user option to all events types for 632 * which it is valid 633 */ 634 for (j = 0; j < PERF_TYPE_MAX; ++j) { 635 if (output[j].invalid_fields & all_output_options[i].field) { 636 pr_warning("\'%s\' not valid for %s events. Ignoring.\n", 637 all_output_options[i].str, event_type(j)); 638 } else 639 output[j].fields |= all_output_options[i].field; 640 } 641 } else { 642 if (output[type].invalid_fields & all_output_options[i].field) { 643 fprintf(stderr, "\'%s\' not valid for %s events.\n", 644 all_output_options[i].str, event_type(type)); 645 646 rc = -EINVAL; 647 goto out; 648 } 649 output[type].fields |= all_output_options[i].field; 650 } 651 652 tok = strtok(NULL, ","); 653 } 654 655 if (type >= 0) { 656 if (output[type].fields == 0) { 657 pr_debug("No fields requested for %s type. " 658 "Events will not be displayed.\n", event_type(type)); 659 } 660 } 661 662 out: 663 free(str); 664 return rc; 665 } 666 667 /* Helper function for filesystems that return a dent->d_type DT_UNKNOWN */ 668 static int is_directory(const char *base_path, const struct dirent *dent) 669 { 670 char path[PATH_MAX]; 671 struct stat st; 672 673 sprintf(path, "%s/%s", base_path, dent->d_name); 674 if (stat(path, &st)) 675 return 0; 676 677 return S_ISDIR(st.st_mode); 678 } 679 680 #define for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next)\ 681 while (!readdir_r(scripts_dir, &lang_dirent, &lang_next) && \ 682 lang_next) \ 683 if ((lang_dirent.d_type == DT_DIR || \ 684 (lang_dirent.d_type == DT_UNKNOWN && \ 685 is_directory(scripts_path, &lang_dirent))) && \ 686 (strcmp(lang_dirent.d_name, ".")) && \ 687 (strcmp(lang_dirent.d_name, ".."))) 688 689 #define for_each_script(lang_path, lang_dir, script_dirent, script_next)\ 690 while (!readdir_r(lang_dir, &script_dirent, &script_next) && \ 691 script_next) \ 692 if (script_dirent.d_type != DT_DIR && \ 693 (script_dirent.d_type != DT_UNKNOWN || \ 694 !is_directory(lang_path, &script_dirent))) 695 696 697 #define RECORD_SUFFIX "-record" 698 #define REPORT_SUFFIX "-report" 699 700 struct script_desc { 701 struct list_head node; 702 char *name; 703 char *half_liner; 704 char *args; 705 }; 706 707 static LIST_HEAD(script_descs); 708 709 static struct script_desc *script_desc__new(const char *name) 710 { 711 struct script_desc *s = zalloc(sizeof(*s)); 712 713 if (s != NULL && name) 714 s->name = strdup(name); 715 716 return s; 717 } 718 719 static void script_desc__delete(struct script_desc *s) 720 { 721 free(s->name); 722 free(s->half_liner); 723 free(s->args); 724 free(s); 725 } 726 727 static void script_desc__add(struct script_desc *s) 728 { 729 list_add_tail(&s->node, &script_descs); 730 } 731 732 static struct script_desc *script_desc__find(const char *name) 733 { 734 struct script_desc *s; 735 736 list_for_each_entry(s, &script_descs, node) 737 if (strcasecmp(s->name, name) == 0) 738 return s; 739 return NULL; 740 } 741 742 static struct script_desc *script_desc__findnew(const char *name) 743 { 744 struct script_desc *s = script_desc__find(name); 745 746 if (s) 747 return s; 748 749 s = script_desc__new(name); 750 if (!s) 751 goto out_delete_desc; 752 753 script_desc__add(s); 754 755 return s; 756 757 out_delete_desc: 758 script_desc__delete(s); 759 760 return NULL; 761 } 762 763 static const char *ends_with(const char *str, const char *suffix) 764 { 765 size_t suffix_len = strlen(suffix); 766 const char *p = str; 767 768 if (strlen(str) > suffix_len) { 769 p = str + strlen(str) - suffix_len; 770 if (!strncmp(p, suffix, suffix_len)) 771 return p; 772 } 773 774 return NULL; 775 } 776 777 static char *ltrim(char *str) 778 { 779 int len = strlen(str); 780 781 while (len && isspace(*str)) { 782 len--; 783 str++; 784 } 785 786 return str; 787 } 788 789 static int read_script_info(struct script_desc *desc, const char *filename) 790 { 791 char line[BUFSIZ], *p; 792 FILE *fp; 793 794 fp = fopen(filename, "r"); 795 if (!fp) 796 return -1; 797 798 while (fgets(line, sizeof(line), fp)) { 799 p = ltrim(line); 800 if (strlen(p) == 0) 801 continue; 802 if (*p != '#') 803 continue; 804 p++; 805 if (strlen(p) && *p == '!') 806 continue; 807 808 p = ltrim(p); 809 if (strlen(p) && p[strlen(p) - 1] == '\n') 810 p[strlen(p) - 1] = '\0'; 811 812 if (!strncmp(p, "description:", strlen("description:"))) { 813 p += strlen("description:"); 814 desc->half_liner = strdup(ltrim(p)); 815 continue; 816 } 817 818 if (!strncmp(p, "args:", strlen("args:"))) { 819 p += strlen("args:"); 820 desc->args = strdup(ltrim(p)); 821 continue; 822 } 823 } 824 825 fclose(fp); 826 827 return 0; 828 } 829 830 static int list_available_scripts(const struct option *opt __used, 831 const char *s __used, int unset __used) 832 { 833 struct dirent *script_next, *lang_next, script_dirent, lang_dirent; 834 char scripts_path[MAXPATHLEN]; 835 DIR *scripts_dir, *lang_dir; 836 char script_path[MAXPATHLEN]; 837 char lang_path[MAXPATHLEN]; 838 struct script_desc *desc; 839 char first_half[BUFSIZ]; 840 char *script_root; 841 char *str; 842 843 snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path()); 844 845 scripts_dir = opendir(scripts_path); 846 if (!scripts_dir) 847 return -1; 848 849 for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) { 850 snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path, 851 lang_dirent.d_name); 852 lang_dir = opendir(lang_path); 853 if (!lang_dir) 854 continue; 855 856 for_each_script(lang_path, lang_dir, script_dirent, script_next) { 857 script_root = strdup(script_dirent.d_name); 858 str = (char *)ends_with(script_root, REPORT_SUFFIX); 859 if (str) { 860 *str = '\0'; 861 desc = script_desc__findnew(script_root); 862 snprintf(script_path, MAXPATHLEN, "%s/%s", 863 lang_path, script_dirent.d_name); 864 read_script_info(desc, script_path); 865 } 866 free(script_root); 867 } 868 } 869 870 fprintf(stdout, "List of available trace scripts:\n"); 871 list_for_each_entry(desc, &script_descs, node) { 872 sprintf(first_half, "%s %s", desc->name, 873 desc->args ? desc->args : ""); 874 fprintf(stdout, " %-36s %s\n", first_half, 875 desc->half_liner ? desc->half_liner : ""); 876 } 877 878 exit(0); 879 } 880 881 static char *get_script_path(const char *script_root, const char *suffix) 882 { 883 struct dirent *script_next, *lang_next, script_dirent, lang_dirent; 884 char scripts_path[MAXPATHLEN]; 885 char script_path[MAXPATHLEN]; 886 DIR *scripts_dir, *lang_dir; 887 char lang_path[MAXPATHLEN]; 888 char *str, *__script_root; 889 char *path = NULL; 890 891 snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path()); 892 893 scripts_dir = opendir(scripts_path); 894 if (!scripts_dir) 895 return NULL; 896 897 for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) { 898 snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path, 899 lang_dirent.d_name); 900 lang_dir = opendir(lang_path); 901 if (!lang_dir) 902 continue; 903 904 for_each_script(lang_path, lang_dir, script_dirent, script_next) { 905 __script_root = strdup(script_dirent.d_name); 906 str = (char *)ends_with(__script_root, suffix); 907 if (str) { 908 *str = '\0'; 909 if (strcmp(__script_root, script_root)) 910 continue; 911 snprintf(script_path, MAXPATHLEN, "%s/%s", 912 lang_path, script_dirent.d_name); 913 path = strdup(script_path); 914 free(__script_root); 915 break; 916 } 917 free(__script_root); 918 } 919 } 920 921 return path; 922 } 923 924 static bool is_top_script(const char *script_path) 925 { 926 return ends_with(script_path, "top") == NULL ? false : true; 927 } 928 929 static int has_required_arg(char *script_path) 930 { 931 struct script_desc *desc; 932 int n_args = 0; 933 char *p; 934 935 desc = script_desc__new(NULL); 936 937 if (read_script_info(desc, script_path)) 938 goto out; 939 940 if (!desc->args) 941 goto out; 942 943 for (p = desc->args; *p; p++) 944 if (*p == '<') 945 n_args++; 946 out: 947 script_desc__delete(desc); 948 949 return n_args; 950 } 951 952 static const char * const script_usage[] = { 953 "perf script [<options>]", 954 "perf script [<options>] record <script> [<record-options>] <command>", 955 "perf script [<options>] report <script> [script-args]", 956 "perf script [<options>] <script> [<record-options>] <command>", 957 "perf script [<options>] <top-script> [script-args]", 958 NULL 959 }; 960 961 static const struct option options[] = { 962 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, 963 "dump raw trace in ASCII"), 964 OPT_INCR('v', "verbose", &verbose, 965 "be more verbose (show symbol address, etc)"), 966 OPT_BOOLEAN('L', "Latency", &latency_format, 967 "show latency attributes (irqs/preemption disabled, etc)"), 968 OPT_CALLBACK_NOOPT('l', "list", NULL, NULL, "list available scripts", 969 list_available_scripts), 970 OPT_CALLBACK('s', "script", NULL, "name", 971 "script file name (lang:script name, script name, or *)", 972 parse_scriptname), 973 OPT_STRING('g', "gen-script", &generate_script_lang, "lang", 974 "generate perf-script.xx script in specified language"), 975 OPT_STRING('i', "input", &input_name, "file", 976 "input file name"), 977 OPT_BOOLEAN('d', "debug-mode", &debug_mode, 978 "do various checks like samples ordering and lost events"), 979 OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name, 980 "file", "vmlinux pathname"), 981 OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name, 982 "file", "kallsyms pathname"), 983 OPT_BOOLEAN('G', "hide-call-graph", &no_callchain, 984 "When printing symbols do not display call chain"), 985 OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory", 986 "Look for files with symbols relative to this directory"), 987 OPT_CALLBACK('f', "fields", NULL, "str", 988 "comma separated output fields prepend with 'type:'. Valid types: hw,sw,trace,raw. Fields: comm,tid,pid,time,cpu,event,trace,sym", 989 parse_output_fields), 990 991 OPT_END() 992 }; 993 994 static bool have_cmd(int argc, const char **argv) 995 { 996 char **__argv = malloc(sizeof(const char *) * argc); 997 998 if (!__argv) 999 die("malloc"); 1000 memcpy(__argv, argv, sizeof(const char *) * argc); 1001 argc = parse_options(argc, (const char **)__argv, record_options, 1002 NULL, PARSE_OPT_STOP_AT_NON_OPTION); 1003 free(__argv); 1004 1005 return argc != 0; 1006 } 1007 1008 int cmd_script(int argc, const char **argv, const char *prefix __used) 1009 { 1010 char *rec_script_path = NULL; 1011 char *rep_script_path = NULL; 1012 struct perf_session *session; 1013 char *script_path = NULL; 1014 const char **__argv; 1015 bool system_wide; 1016 int i, j, err; 1017 1018 setup_scripting(); 1019 1020 argc = parse_options(argc, argv, options, script_usage, 1021 PARSE_OPT_STOP_AT_NON_OPTION); 1022 1023 if (argc > 1 && !strncmp(argv[0], "rec", strlen("rec"))) { 1024 rec_script_path = get_script_path(argv[1], RECORD_SUFFIX); 1025 if (!rec_script_path) 1026 return cmd_record(argc, argv, NULL); 1027 } 1028 1029 if (argc > 1 && !strncmp(argv[0], "rep", strlen("rep"))) { 1030 rep_script_path = get_script_path(argv[1], REPORT_SUFFIX); 1031 if (!rep_script_path) { 1032 fprintf(stderr, 1033 "Please specify a valid report script" 1034 "(see 'perf script -l' for listing)\n"); 1035 return -1; 1036 } 1037 } 1038 1039 /* make sure PERF_EXEC_PATH is set for scripts */ 1040 perf_set_argv_exec_path(perf_exec_path()); 1041 1042 if (argc && !script_name && !rec_script_path && !rep_script_path) { 1043 int live_pipe[2]; 1044 int rep_args; 1045 pid_t pid; 1046 1047 rec_script_path = get_script_path(argv[0], RECORD_SUFFIX); 1048 rep_script_path = get_script_path(argv[0], REPORT_SUFFIX); 1049 1050 if (!rec_script_path && !rep_script_path) { 1051 fprintf(stderr, " Couldn't find script %s\n\n See perf" 1052 " script -l for available scripts.\n", argv[0]); 1053 usage_with_options(script_usage, options); 1054 } 1055 1056 if (is_top_script(argv[0])) { 1057 rep_args = argc - 1; 1058 } else { 1059 int rec_args; 1060 1061 rep_args = has_required_arg(rep_script_path); 1062 rec_args = (argc - 1) - rep_args; 1063 if (rec_args < 0) { 1064 fprintf(stderr, " %s script requires options." 1065 "\n\n See perf script -l for available " 1066 "scripts and options.\n", argv[0]); 1067 usage_with_options(script_usage, options); 1068 } 1069 } 1070 1071 if (pipe(live_pipe) < 0) { 1072 perror("failed to create pipe"); 1073 exit(-1); 1074 } 1075 1076 pid = fork(); 1077 if (pid < 0) { 1078 perror("failed to fork"); 1079 exit(-1); 1080 } 1081 1082 if (!pid) { 1083 system_wide = true; 1084 j = 0; 1085 1086 dup2(live_pipe[1], 1); 1087 close(live_pipe[0]); 1088 1089 if (!is_top_script(argv[0])) 1090 system_wide = !have_cmd(argc - rep_args, 1091 &argv[rep_args]); 1092 1093 __argv = malloc((argc + 6) * sizeof(const char *)); 1094 if (!__argv) 1095 die("malloc"); 1096 1097 __argv[j++] = "/bin/sh"; 1098 __argv[j++] = rec_script_path; 1099 if (system_wide) 1100 __argv[j++] = "-a"; 1101 __argv[j++] = "-q"; 1102 __argv[j++] = "-o"; 1103 __argv[j++] = "-"; 1104 for (i = rep_args + 1; i < argc; i++) 1105 __argv[j++] = argv[i]; 1106 __argv[j++] = NULL; 1107 1108 execvp("/bin/sh", (char **)__argv); 1109 free(__argv); 1110 exit(-1); 1111 } 1112 1113 dup2(live_pipe[0], 0); 1114 close(live_pipe[1]); 1115 1116 __argv = malloc((argc + 4) * sizeof(const char *)); 1117 if (!__argv) 1118 die("malloc"); 1119 j = 0; 1120 __argv[j++] = "/bin/sh"; 1121 __argv[j++] = rep_script_path; 1122 for (i = 1; i < rep_args + 1; i++) 1123 __argv[j++] = argv[i]; 1124 __argv[j++] = "-i"; 1125 __argv[j++] = "-"; 1126 __argv[j++] = NULL; 1127 1128 execvp("/bin/sh", (char **)__argv); 1129 free(__argv); 1130 exit(-1); 1131 } 1132 1133 if (rec_script_path) 1134 script_path = rec_script_path; 1135 if (rep_script_path) 1136 script_path = rep_script_path; 1137 1138 if (script_path) { 1139 system_wide = false; 1140 j = 0; 1141 1142 if (rec_script_path) 1143 system_wide = !have_cmd(argc - 1, &argv[1]); 1144 1145 __argv = malloc((argc + 2) * sizeof(const char *)); 1146 if (!__argv) 1147 die("malloc"); 1148 __argv[j++] = "/bin/sh"; 1149 __argv[j++] = script_path; 1150 if (system_wide) 1151 __argv[j++] = "-a"; 1152 for (i = 2; i < argc; i++) 1153 __argv[j++] = argv[i]; 1154 __argv[j++] = NULL; 1155 1156 execvp("/bin/sh", (char **)__argv); 1157 free(__argv); 1158 exit(-1); 1159 } 1160 1161 if (symbol__init() < 0) 1162 return -1; 1163 if (!script_name) 1164 setup_pager(); 1165 1166 session = perf_session__new(input_name, O_RDONLY, 0, false, &event_ops); 1167 if (session == NULL) 1168 return -ENOMEM; 1169 1170 if (!no_callchain) 1171 symbol_conf.use_callchain = true; 1172 else 1173 symbol_conf.use_callchain = false; 1174 1175 if (generate_script_lang) { 1176 struct stat perf_stat; 1177 int input; 1178 1179 if (output_set_by_user()) { 1180 fprintf(stderr, 1181 "custom fields not supported for generated scripts"); 1182 return -1; 1183 } 1184 1185 input = open(input_name, O_RDONLY); 1186 if (input < 0) { 1187 perror("failed to open file"); 1188 exit(-1); 1189 } 1190 1191 err = fstat(input, &perf_stat); 1192 if (err < 0) { 1193 perror("failed to stat file"); 1194 exit(-1); 1195 } 1196 1197 if (!perf_stat.st_size) { 1198 fprintf(stderr, "zero-sized file, nothing to do!\n"); 1199 exit(0); 1200 } 1201 1202 scripting_ops = script_spec__lookup(generate_script_lang); 1203 if (!scripting_ops) { 1204 fprintf(stderr, "invalid language specifier"); 1205 return -1; 1206 } 1207 1208 err = scripting_ops->generate_script("perf-script"); 1209 goto out; 1210 } 1211 1212 if (script_name) { 1213 err = scripting_ops->start_script(script_name, argc, argv); 1214 if (err) 1215 goto out; 1216 pr_debug("perf script started with script %s\n\n", script_name); 1217 } 1218 1219 1220 err = perf_session__check_output_opt(session); 1221 if (err < 0) 1222 goto out; 1223 1224 err = __cmd_script(session); 1225 1226 perf_session__delete(session); 1227 cleanup_scripting(); 1228 out: 1229 return err; 1230 } 1231
