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