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/tool.h" 11 #include "util/symbol.h" 12 #include "util/thread.h" 13 #include "util/trace-event.h" 14 #include "util/util.h" 15 #include "util/evlist.h" 16 #include "util/evsel.h" 17 #include "util/sort.h" 18 #include <linux/bitmap.h> 19 20 static char const *script_name; 21 static char const *generate_script_lang; 22 static bool debug_mode; 23 static u64 last_timestamp; 24 static u64 nr_unordered; 25 extern const struct option record_options[]; 26 static bool no_callchain; 27 static bool latency_format; 28 static bool system_wide; 29 static const char *cpu_list; 30 static DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS); 31 32 enum perf_output_field { 33 PERF_OUTPUT_COMM = 1U << 0, 34 PERF_OUTPUT_TID = 1U << 1, 35 PERF_OUTPUT_PID = 1U << 2, 36 PERF_OUTPUT_TIME = 1U << 3, 37 PERF_OUTPUT_CPU = 1U << 4, 38 PERF_OUTPUT_EVNAME = 1U << 5, 39 PERF_OUTPUT_TRACE = 1U << 6, 40 PERF_OUTPUT_IP = 1U << 7, 41 PERF_OUTPUT_SYM = 1U << 8, 42 PERF_OUTPUT_DSO = 1U << 9, 43 PERF_OUTPUT_ADDR = 1U << 10, 44 PERF_OUTPUT_SYMOFFSET = 1U << 11, 45 }; 46 47 struct output_option { 48 const char *str; 49 enum perf_output_field field; 50 } all_output_options[] = { 51 {.str = "comm", .field = PERF_OUTPUT_COMM}, 52 {.str = "tid", .field = PERF_OUTPUT_TID}, 53 {.str = "pid", .field = PERF_OUTPUT_PID}, 54 {.str = "time", .field = PERF_OUTPUT_TIME}, 55 {.str = "cpu", .field = PERF_OUTPUT_CPU}, 56 {.str = "event", .field = PERF_OUTPUT_EVNAME}, 57 {.str = "trace", .field = PERF_OUTPUT_TRACE}, 58 {.str = "ip", .field = PERF_OUTPUT_IP}, 59 {.str = "sym", .field = PERF_OUTPUT_SYM}, 60 {.str = "dso", .field = PERF_OUTPUT_DSO}, 61 {.str = "addr", .field = PERF_OUTPUT_ADDR}, 62 {.str = "symoff", .field = PERF_OUTPUT_SYMOFFSET}, 63 }; 64 65 /* default set to maintain compatibility with current format */ 66 static struct { 67 bool user_set; 68 bool wildcard_set; 69 unsigned int print_ip_opts; 70 u64 fields; 71 u64 invalid_fields; 72 } output[PERF_TYPE_MAX] = { 73 74 [PERF_TYPE_HARDWARE] = { 75 .user_set = false, 76 77 .fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID | 78 PERF_OUTPUT_CPU | PERF_OUTPUT_TIME | 79 PERF_OUTPUT_EVNAME | PERF_OUTPUT_IP | 80 PERF_OUTPUT_SYM | PERF_OUTPUT_DSO, 81 82 .invalid_fields = PERF_OUTPUT_TRACE, 83 }, 84 85 [PERF_TYPE_SOFTWARE] = { 86 .user_set = false, 87 88 .fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID | 89 PERF_OUTPUT_CPU | PERF_OUTPUT_TIME | 90 PERF_OUTPUT_EVNAME | PERF_OUTPUT_IP | 91 PERF_OUTPUT_SYM | PERF_OUTPUT_DSO, 92 93 .invalid_fields = PERF_OUTPUT_TRACE, 94 }, 95 96 [PERF_TYPE_TRACEPOINT] = { 97 .user_set = false, 98 99 .fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID | 100 PERF_OUTPUT_CPU | PERF_OUTPUT_TIME | 101 PERF_OUTPUT_EVNAME | PERF_OUTPUT_TRACE, 102 }, 103 104 [PERF_TYPE_RAW] = { 105 .user_set = false, 106 107 .fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID | 108 PERF_OUTPUT_CPU | PERF_OUTPUT_TIME | 109 PERF_OUTPUT_EVNAME | PERF_OUTPUT_IP | 110 PERF_OUTPUT_SYM | PERF_OUTPUT_DSO, 111 112 .invalid_fields = PERF_OUTPUT_TRACE, 113 }, 114 }; 115 116 static bool output_set_by_user(void) 117 { 118 int j; 119 for (j = 0; j < PERF_TYPE_MAX; ++j) { 120 if (output[j].user_set) 121 return true; 122 } 123 return false; 124 } 125 126 static const char *output_field2str(enum perf_output_field field) 127 { 128 int i, imax = ARRAY_SIZE(all_output_options); 129 const char *str = ""; 130 131 for (i = 0; i < imax; ++i) { 132 if (all_output_options[i].field == field) { 133 str = all_output_options[i].str; 134 break; 135 } 136 } 137 return str; 138 } 139 140 #define PRINT_FIELD(x) (output[attr->type].fields & PERF_OUTPUT_##x) 141 142 static int perf_evsel__check_stype(struct perf_evsel *evsel, 143 u64 sample_type, const char *sample_msg, 144 enum perf_output_field field) 145 { 146 struct perf_event_attr *attr = &evsel->attr; 147 int type = attr->type; 148 const char *evname; 149 150 if (attr->sample_type & sample_type) 151 return 0; 152 153 if (output[type].user_set) { 154 evname = perf_evsel__name(evsel); 155 pr_err("Samples for '%s' event do not have %s attribute set. " 156 "Cannot print '%s' field.\n", 157 evname, sample_msg, output_field2str(field)); 158 return -1; 159 } 160 161 /* user did not ask for it explicitly so remove from the default list */ 162 output[type].fields &= ~field; 163 evname = perf_evsel__name(evsel); 164 pr_debug("Samples for '%s' event do not have %s attribute set. " 165 "Skipping '%s' field.\n", 166 evname, sample_msg, output_field2str(field)); 167 168 return 0; 169 } 170 171 static int perf_evsel__check_attr(struct perf_evsel *evsel, 172 struct perf_session *session) 173 { 174 struct perf_event_attr *attr = &evsel->attr; 175 176 if (PRINT_FIELD(TRACE) && 177 !perf_session__has_traces(session, "record -R")) 178 return -EINVAL; 179 180 if (PRINT_FIELD(IP)) { 181 if (perf_evsel__check_stype(evsel, PERF_SAMPLE_IP, "IP", 182 PERF_OUTPUT_IP)) 183 return -EINVAL; 184 185 if (!no_callchain && 186 !(attr->sample_type & PERF_SAMPLE_CALLCHAIN)) 187 symbol_conf.use_callchain = false; 188 } 189 190 if (PRINT_FIELD(ADDR) && 191 perf_evsel__check_stype(evsel, PERF_SAMPLE_ADDR, "ADDR", 192 PERF_OUTPUT_ADDR)) 193 return -EINVAL; 194 195 if (PRINT_FIELD(SYM) && !PRINT_FIELD(IP) && !PRINT_FIELD(ADDR)) { 196 pr_err("Display of symbols requested but neither sample IP nor " 197 "sample address\nis selected. Hence, no addresses to convert " 198 "to symbols.\n"); 199 return -EINVAL; 200 } 201 if (PRINT_FIELD(SYMOFFSET) && !PRINT_FIELD(SYM)) { 202 pr_err("Display of offsets requested but symbol is not" 203 "selected.\n"); 204 return -EINVAL; 205 } 206 if (PRINT_FIELD(DSO) && !PRINT_FIELD(IP) && !PRINT_FIELD(ADDR)) { 207 pr_err("Display of DSO requested but neither sample IP nor " 208 "sample address\nis selected. Hence, no addresses to convert " 209 "to DSO.\n"); 210 return -EINVAL; 211 } 212 213 if ((PRINT_FIELD(PID) || PRINT_FIELD(TID)) && 214 perf_evsel__check_stype(evsel, PERF_SAMPLE_TID, "TID", 215 PERF_OUTPUT_TID|PERF_OUTPUT_PID)) 216 return -EINVAL; 217 218 if (PRINT_FIELD(TIME) && 219 perf_evsel__check_stype(evsel, PERF_SAMPLE_TIME, "TIME", 220 PERF_OUTPUT_TIME)) 221 return -EINVAL; 222 223 if (PRINT_FIELD(CPU) && 224 perf_evsel__check_stype(evsel, PERF_SAMPLE_CPU, "CPU", 225 PERF_OUTPUT_CPU)) 226 return -EINVAL; 227 228 return 0; 229 } 230 231 /* 232 * verify all user requested events exist and the samples 233 * have the expected data 234 */ 235 static int perf_session__check_output_opt(struct perf_session *session) 236 { 237 int j; 238 struct perf_evsel *evsel; 239 struct perf_event_attr *attr; 240 241 for (j = 0; j < PERF_TYPE_MAX; ++j) { 242 evsel = perf_session__find_first_evtype(session, j); 243 244 /* 245 * even if fields is set to 0 (ie., show nothing) event must 246 * exist if user explicitly includes it on the command line 247 */ 248 if (!evsel && output[j].user_set && !output[j].wildcard_set) { 249 pr_err("%s events do not exist. " 250 "Remove corresponding -f option to proceed.\n", 251 event_type(j)); 252 return -1; 253 } 254 255 if (evsel && output[j].fields && 256 perf_evsel__check_attr(evsel, session)) 257 return -1; 258 259 if (evsel == NULL) 260 continue; 261 262 attr = &evsel->attr; 263 264 output[j].print_ip_opts = 0; 265 if (PRINT_FIELD(IP)) 266 output[j].print_ip_opts |= PRINT_IP_OPT_IP; 267 268 if (PRINT_FIELD(SYM)) 269 output[j].print_ip_opts |= PRINT_IP_OPT_SYM; 270 271 if (PRINT_FIELD(DSO)) 272 output[j].print_ip_opts |= PRINT_IP_OPT_DSO; 273 274 if (PRINT_FIELD(SYMOFFSET)) 275 output[j].print_ip_opts |= PRINT_IP_OPT_SYMOFFSET; 276 } 277 278 return 0; 279 } 280 281 static void print_sample_start(struct perf_sample *sample, 282 struct thread *thread, 283 struct perf_evsel *evsel) 284 { 285 struct perf_event_attr *attr = &evsel->attr; 286 const char *evname = NULL; 287 unsigned long secs; 288 unsigned long usecs; 289 unsigned long long nsecs; 290 291 if (PRINT_FIELD(COMM)) { 292 if (latency_format) 293 printf("%8.8s ", thread->comm); 294 else if (PRINT_FIELD(IP) && symbol_conf.use_callchain) 295 printf("%s ", thread->comm); 296 else 297 printf("%16s ", thread->comm); 298 } 299 300 if (PRINT_FIELD(PID) && PRINT_FIELD(TID)) 301 printf("%5d/%-5d ", sample->pid, sample->tid); 302 else if (PRINT_FIELD(PID)) 303 printf("%5d ", sample->pid); 304 else if (PRINT_FIELD(TID)) 305 printf("%5d ", sample->tid); 306 307 if (PRINT_FIELD(CPU)) { 308 if (latency_format) 309 printf("%3d ", sample->cpu); 310 else 311 printf("[%03d] ", sample->cpu); 312 } 313 314 if (PRINT_FIELD(TIME)) { 315 nsecs = sample->time; 316 secs = nsecs / NSECS_PER_SEC; 317 nsecs -= secs * NSECS_PER_SEC; 318 usecs = nsecs / NSECS_PER_USEC; 319 printf("%5lu.%06lu: ", secs, usecs); 320 } 321 322 if (PRINT_FIELD(EVNAME)) { 323 evname = perf_evsel__name(evsel); 324 printf("%s: ", evname ? evname : "[unknown]"); 325 } 326 } 327 328 static bool is_bts_event(struct perf_event_attr *attr) 329 { 330 return ((attr->type == PERF_TYPE_HARDWARE) && 331 (attr->config & PERF_COUNT_HW_BRANCH_INSTRUCTIONS) && 332 (attr->sample_period == 1)); 333 } 334 335 static bool sample_addr_correlates_sym(struct perf_event_attr *attr) 336 { 337 if ((attr->type == PERF_TYPE_SOFTWARE) && 338 ((attr->config == PERF_COUNT_SW_PAGE_FAULTS) || 339 (attr->config == PERF_COUNT_SW_PAGE_FAULTS_MIN) || 340 (attr->config == PERF_COUNT_SW_PAGE_FAULTS_MAJ))) 341 return true; 342 343 if (is_bts_event(attr)) 344 return true; 345 346 return false; 347 } 348 349 static void print_sample_addr(union perf_event *event, 350 struct perf_sample *sample, 351 struct machine *machine, 352 struct thread *thread, 353 struct perf_event_attr *attr) 354 { 355 struct addr_location al; 356 u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; 357 358 printf("%16" PRIx64, sample->addr); 359 360 if (!sample_addr_correlates_sym(attr)) 361 return; 362 363 thread__find_addr_map(thread, machine, cpumode, MAP__FUNCTION, 364 sample->addr, &al); 365 if (!al.map) 366 thread__find_addr_map(thread, machine, cpumode, MAP__VARIABLE, 367 sample->addr, &al); 368 369 al.cpu = sample->cpu; 370 al.sym = NULL; 371 372 if (al.map) 373 al.sym = map__find_symbol(al.map, al.addr, NULL); 374 375 if (PRINT_FIELD(SYM)) { 376 printf(" "); 377 if (PRINT_FIELD(SYMOFFSET)) 378 symbol__fprintf_symname_offs(al.sym, &al, stdout); 379 else 380 symbol__fprintf_symname(al.sym, stdout); 381 } 382 383 if (PRINT_FIELD(DSO)) { 384 printf(" ("); 385 map__fprintf_dsoname(al.map, stdout); 386 printf(")"); 387 } 388 } 389 390 static void print_sample_bts(union perf_event *event, 391 struct perf_sample *sample, 392 struct perf_evsel *evsel, 393 struct machine *machine, 394 struct thread *thread) 395 { 396 struct perf_event_attr *attr = &evsel->attr; 397 398 /* print branch_from information */ 399 if (PRINT_FIELD(IP)) { 400 if (!symbol_conf.use_callchain) 401 printf(" "); 402 else 403 printf("\n"); 404 perf_evsel__print_ip(evsel, event, sample, machine, 405 output[attr->type].print_ip_opts, 406 PERF_MAX_STACK_DEPTH); 407 } 408 409 printf(" => "); 410 411 /* print branch_to information */ 412 if (PRINT_FIELD(ADDR)) 413 print_sample_addr(event, sample, machine, thread, attr); 414 415 printf("\n"); 416 } 417 418 static void process_event(union perf_event *event, struct perf_sample *sample, 419 struct perf_evsel *evsel, struct machine *machine, 420 struct thread *thread, 421 struct addr_location *al __maybe_unused) 422 { 423 struct perf_event_attr *attr = &evsel->attr; 424 425 if (output[attr->type].fields == 0) 426 return; 427 428 print_sample_start(sample, thread, evsel); 429 430 if (is_bts_event(attr)) { 431 print_sample_bts(event, sample, evsel, machine, thread); 432 return; 433 } 434 435 if (PRINT_FIELD(TRACE)) 436 event_format__print(evsel->tp_format, sample->cpu, 437 sample->raw_data, sample->raw_size); 438 if (PRINT_FIELD(ADDR)) 439 print_sample_addr(event, sample, machine, thread, attr); 440 441 if (PRINT_FIELD(IP)) { 442 if (!symbol_conf.use_callchain) 443 printf(" "); 444 else 445 printf("\n"); 446 447 perf_evsel__print_ip(evsel, event, sample, machine, 448 output[attr->type].print_ip_opts, 449 PERF_MAX_STACK_DEPTH); 450 } 451 452 printf("\n"); 453 } 454 455 static int default_start_script(const char *script __maybe_unused, 456 int argc __maybe_unused, 457 const char **argv __maybe_unused) 458 { 459 return 0; 460 } 461 462 static int default_stop_script(void) 463 { 464 return 0; 465 } 466 467 static int default_generate_script(struct pevent *pevent __maybe_unused, 468 const char *outfile __maybe_unused) 469 { 470 return 0; 471 } 472 473 static struct scripting_ops default_scripting_ops = { 474 .start_script = default_start_script, 475 .stop_script = default_stop_script, 476 .process_event = process_event, 477 .generate_script = default_generate_script, 478 }; 479 480 static struct scripting_ops *scripting_ops; 481 482 static void setup_scripting(void) 483 { 484 setup_perl_scripting(); 485 setup_python_scripting(); 486 487 scripting_ops = &default_scripting_ops; 488 } 489 490 static int cleanup_scripting(void) 491 { 492 pr_debug("\nperf script stopped\n"); 493 494 return scripting_ops->stop_script(); 495 } 496 497 static int process_sample_event(struct perf_tool *tool __maybe_unused, 498 union perf_event *event, 499 struct perf_sample *sample, 500 struct perf_evsel *evsel, 501 struct machine *machine) 502 { 503 struct addr_location al; 504 struct thread *thread = machine__findnew_thread(machine, sample->pid, 505 sample->tid); 506 507 if (thread == NULL) { 508 pr_debug("problem processing %d event, skipping it.\n", 509 event->header.type); 510 return -1; 511 } 512 513 if (debug_mode) { 514 if (sample->time < last_timestamp) { 515 pr_err("Samples misordered, previous: %" PRIu64 516 " this: %" PRIu64 "\n", last_timestamp, 517 sample->time); 518 nr_unordered++; 519 } 520 last_timestamp = sample->time; 521 return 0; 522 } 523 524 if (perf_event__preprocess_sample(event, machine, &al, sample) < 0) { 525 pr_err("problem processing %d event, skipping it.\n", 526 event->header.type); 527 return -1; 528 } 529 530 if (al.filtered) 531 return 0; 532 533 if (cpu_list && !test_bit(sample->cpu, cpu_bitmap)) 534 return 0; 535 536 scripting_ops->process_event(event, sample, evsel, machine, thread, &al); 537 538 evsel->hists.stats.total_period += sample->period; 539 return 0; 540 } 541 542 static struct perf_tool perf_script = { 543 .sample = process_sample_event, 544 .mmap = perf_event__process_mmap, 545 .mmap2 = perf_event__process_mmap2, 546 .comm = perf_event__process_comm, 547 .exit = perf_event__process_exit, 548 .fork = perf_event__process_fork, 549 .attr = perf_event__process_attr, 550 .tracing_data = perf_event__process_tracing_data, 551 .build_id = perf_event__process_build_id, 552 .ordered_samples = true, 553 .ordering_requires_timestamps = true, 554 }; 555 556 extern volatile int session_done; 557 558 static void sig_handler(int sig __maybe_unused) 559 { 560 session_done = 1; 561 } 562 563 static int __cmd_script(struct perf_session *session) 564 { 565 int ret; 566 567 signal(SIGINT, sig_handler); 568 569 ret = perf_session__process_events(session, &perf_script); 570 571 if (debug_mode) 572 pr_err("Misordered timestamps: %" PRIu64 "\n", nr_unordered); 573 574 return ret; 575 } 576 577 struct script_spec { 578 struct list_head node; 579 struct scripting_ops *ops; 580 char spec[0]; 581 }; 582 583 static LIST_HEAD(script_specs); 584 585 static struct script_spec *script_spec__new(const char *spec, 586 struct scripting_ops *ops) 587 { 588 struct script_spec *s = malloc(sizeof(*s) + strlen(spec) + 1); 589 590 if (s != NULL) { 591 strcpy(s->spec, spec); 592 s->ops = ops; 593 } 594 595 return s; 596 } 597 598 static void script_spec__add(struct script_spec *s) 599 { 600 list_add_tail(&s->node, &script_specs); 601 } 602 603 static struct script_spec *script_spec__find(const char *spec) 604 { 605 struct script_spec *s; 606 607 list_for_each_entry(s, &script_specs, node) 608 if (strcasecmp(s->spec, spec) == 0) 609 return s; 610 return NULL; 611 } 612 613 static struct script_spec *script_spec__findnew(const char *spec, 614 struct scripting_ops *ops) 615 { 616 struct script_spec *s = script_spec__find(spec); 617 618 if (s) 619 return s; 620 621 s = script_spec__new(spec, ops); 622 if (!s) 623 return NULL; 624 625 script_spec__add(s); 626 627 return s; 628 } 629 630 int script_spec_register(const char *spec, struct scripting_ops *ops) 631 { 632 struct script_spec *s; 633 634 s = script_spec__find(spec); 635 if (s) 636 return -1; 637 638 s = script_spec__findnew(spec, ops); 639 if (!s) 640 return -1; 641 642 return 0; 643 } 644 645 static struct scripting_ops *script_spec__lookup(const char *spec) 646 { 647 struct script_spec *s = script_spec__find(spec); 648 if (!s) 649 return NULL; 650 651 return s->ops; 652 } 653 654 static void list_available_languages(void) 655 { 656 struct script_spec *s; 657 658 fprintf(stderr, "\n"); 659 fprintf(stderr, "Scripting language extensions (used in " 660 "perf script -s [spec:]script.[spec]):\n\n"); 661 662 list_for_each_entry(s, &script_specs, node) 663 fprintf(stderr, " %-42s [%s]\n", s->spec, s->ops->name); 664 665 fprintf(stderr, "\n"); 666 } 667 668 static int parse_scriptname(const struct option *opt __maybe_unused, 669 const char *str, int unset __maybe_unused) 670 { 671 char spec[PATH_MAX]; 672 const char *script, *ext; 673 int len; 674 675 if (strcmp(str, "lang") == 0) { 676 list_available_languages(); 677 exit(0); 678 } 679 680 script = strchr(str, ':'); 681 if (script) { 682 len = script - str; 683 if (len >= PATH_MAX) { 684 fprintf(stderr, "invalid language specifier"); 685 return -1; 686 } 687 strncpy(spec, str, len); 688 spec[len] = '\0'; 689 scripting_ops = script_spec__lookup(spec); 690 if (!scripting_ops) { 691 fprintf(stderr, "invalid language specifier"); 692 return -1; 693 } 694 script++; 695 } else { 696 script = str; 697 ext = strrchr(script, '.'); 698 if (!ext) { 699 fprintf(stderr, "invalid script extension"); 700 return -1; 701 } 702 scripting_ops = script_spec__lookup(++ext); 703 if (!scripting_ops) { 704 fprintf(stderr, "invalid script extension"); 705 return -1; 706 } 707 } 708 709 script_name = strdup(script); 710 711 return 0; 712 } 713 714 static int parse_output_fields(const struct option *opt __maybe_unused, 715 const char *arg, int unset __maybe_unused) 716 { 717 char *tok; 718 int i, imax = ARRAY_SIZE(all_output_options); 719 int j; 720 int rc = 0; 721 char *str = strdup(arg); 722 int type = -1; 723 724 if (!str) 725 return -ENOMEM; 726 727 /* first word can state for which event type the user is specifying 728 * the fields. If no type exists, the specified fields apply to all 729 * event types found in the file minus the invalid fields for a type. 730 */ 731 tok = strchr(str, ':'); 732 if (tok) { 733 *tok = '\0'; 734 tok++; 735 if (!strcmp(str, "hw")) 736 type = PERF_TYPE_HARDWARE; 737 else if (!strcmp(str, "sw")) 738 type = PERF_TYPE_SOFTWARE; 739 else if (!strcmp(str, "trace")) 740 type = PERF_TYPE_TRACEPOINT; 741 else if (!strcmp(str, "raw")) 742 type = PERF_TYPE_RAW; 743 else { 744 fprintf(stderr, "Invalid event type in field string.\n"); 745 rc = -EINVAL; 746 goto out; 747 } 748 749 if (output[type].user_set) 750 pr_warning("Overriding previous field request for %s events.\n", 751 event_type(type)); 752 753 output[type].fields = 0; 754 output[type].user_set = true; 755 output[type].wildcard_set = false; 756 757 } else { 758 tok = str; 759 if (strlen(str) == 0) { 760 fprintf(stderr, 761 "Cannot set fields to 'none' for all event types.\n"); 762 rc = -EINVAL; 763 goto out; 764 } 765 766 if (output_set_by_user()) 767 pr_warning("Overriding previous field request for all events.\n"); 768 769 for (j = 0; j < PERF_TYPE_MAX; ++j) { 770 output[j].fields = 0; 771 output[j].user_set = true; 772 output[j].wildcard_set = true; 773 } 774 } 775 776 tok = strtok(tok, ","); 777 while (tok) { 778 for (i = 0; i < imax; ++i) { 779 if (strcmp(tok, all_output_options[i].str) == 0) 780 break; 781 } 782 if (i == imax) { 783 fprintf(stderr, "Invalid field requested.\n"); 784 rc = -EINVAL; 785 goto out; 786 } 787 788 if (type == -1) { 789 /* add user option to all events types for 790 * which it is valid 791 */ 792 for (j = 0; j < PERF_TYPE_MAX; ++j) { 793 if (output[j].invalid_fields & all_output_options[i].field) { 794 pr_warning("\'%s\' not valid for %s events. Ignoring.\n", 795 all_output_options[i].str, event_type(j)); 796 } else 797 output[j].fields |= all_output_options[i].field; 798 } 799 } else { 800 if (output[type].invalid_fields & all_output_options[i].field) { 801 fprintf(stderr, "\'%s\' not valid for %s events.\n", 802 all_output_options[i].str, event_type(type)); 803 804 rc = -EINVAL; 805 goto out; 806 } 807 output[type].fields |= all_output_options[i].field; 808 } 809 810 tok = strtok(NULL, ","); 811 } 812 813 if (type >= 0) { 814 if (output[type].fields == 0) { 815 pr_debug("No fields requested for %s type. " 816 "Events will not be displayed.\n", event_type(type)); 817 } 818 } 819 820 out: 821 free(str); 822 return rc; 823 } 824 825 /* Helper function for filesystems that return a dent->d_type DT_UNKNOWN */ 826 static int is_directory(const char *base_path, const struct dirent *dent) 827 { 828 char path[PATH_MAX]; 829 struct stat st; 830 831 sprintf(path, "%s/%s", base_path, dent->d_name); 832 if (stat(path, &st)) 833 return 0; 834 835 return S_ISDIR(st.st_mode); 836 } 837 838 #define for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next)\ 839 while (!readdir_r(scripts_dir, &lang_dirent, &lang_next) && \ 840 lang_next) \ 841 if ((lang_dirent.d_type == DT_DIR || \ 842 (lang_dirent.d_type == DT_UNKNOWN && \ 843 is_directory(scripts_path, &lang_dirent))) && \ 844 (strcmp(lang_dirent.d_name, ".")) && \ 845 (strcmp(lang_dirent.d_name, ".."))) 846 847 #define for_each_script(lang_path, lang_dir, script_dirent, script_next)\ 848 while (!readdir_r(lang_dir, &script_dirent, &script_next) && \ 849 script_next) \ 850 if (script_dirent.d_type != DT_DIR && \ 851 (script_dirent.d_type != DT_UNKNOWN || \ 852 !is_directory(lang_path, &script_dirent))) 853 854 855 #define RECORD_SUFFIX "-record" 856 #define REPORT_SUFFIX "-report" 857 858 struct script_desc { 859 struct list_head node; 860 char *name; 861 char *half_liner; 862 char *args; 863 }; 864 865 static LIST_HEAD(script_descs); 866 867 static struct script_desc *script_desc__new(const char *name) 868 { 869 struct script_desc *s = zalloc(sizeof(*s)); 870 871 if (s != NULL && name) 872 s->name = strdup(name); 873 874 return s; 875 } 876 877 static void script_desc__delete(struct script_desc *s) 878 { 879 free(s->name); 880 free(s->half_liner); 881 free(s->args); 882 free(s); 883 } 884 885 static void script_desc__add(struct script_desc *s) 886 { 887 list_add_tail(&s->node, &script_descs); 888 } 889 890 static struct script_desc *script_desc__find(const char *name) 891 { 892 struct script_desc *s; 893 894 list_for_each_entry(s, &script_descs, node) 895 if (strcasecmp(s->name, name) == 0) 896 return s; 897 return NULL; 898 } 899 900 static struct script_desc *script_desc__findnew(const char *name) 901 { 902 struct script_desc *s = script_desc__find(name); 903 904 if (s) 905 return s; 906 907 s = script_desc__new(name); 908 if (!s) 909 goto out_delete_desc; 910 911 script_desc__add(s); 912 913 return s; 914 915 out_delete_desc: 916 script_desc__delete(s); 917 918 return NULL; 919 } 920 921 static const char *ends_with(const char *str, const char *suffix) 922 { 923 size_t suffix_len = strlen(suffix); 924 const char *p = str; 925 926 if (strlen(str) > suffix_len) { 927 p = str + strlen(str) - suffix_len; 928 if (!strncmp(p, suffix, suffix_len)) 929 return p; 930 } 931 932 return NULL; 933 } 934 935 static int read_script_info(struct script_desc *desc, const char *filename) 936 { 937 char line[BUFSIZ], *p; 938 FILE *fp; 939 940 fp = fopen(filename, "r"); 941 if (!fp) 942 return -1; 943 944 while (fgets(line, sizeof(line), fp)) { 945 p = ltrim(line); 946 if (strlen(p) == 0) 947 continue; 948 if (*p != '#') 949 continue; 950 p++; 951 if (strlen(p) && *p == '!') 952 continue; 953 954 p = ltrim(p); 955 if (strlen(p) && p[strlen(p) - 1] == '\n') 956 p[strlen(p) - 1] = '\0'; 957 958 if (!strncmp(p, "description:", strlen("description:"))) { 959 p += strlen("description:"); 960 desc->half_liner = strdup(ltrim(p)); 961 continue; 962 } 963 964 if (!strncmp(p, "args:", strlen("args:"))) { 965 p += strlen("args:"); 966 desc->args = strdup(ltrim(p)); 967 continue; 968 } 969 } 970 971 fclose(fp); 972 973 return 0; 974 } 975 976 static char *get_script_root(struct dirent *script_dirent, const char *suffix) 977 { 978 char *script_root, *str; 979 980 script_root = strdup(script_dirent->d_name); 981 if (!script_root) 982 return NULL; 983 984 str = (char *)ends_with(script_root, suffix); 985 if (!str) { 986 free(script_root); 987 return NULL; 988 } 989 990 *str = '\0'; 991 return script_root; 992 } 993 994 static int list_available_scripts(const struct option *opt __maybe_unused, 995 const char *s __maybe_unused, 996 int unset __maybe_unused) 997 { 998 struct dirent *script_next, *lang_next, script_dirent, lang_dirent; 999 char scripts_path[MAXPATHLEN]; 1000 DIR *scripts_dir, *lang_dir; 1001 char script_path[MAXPATHLEN]; 1002 char lang_path[MAXPATHLEN]; 1003 struct script_desc *desc; 1004 char first_half[BUFSIZ]; 1005 char *script_root; 1006 1007 snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path()); 1008 1009 scripts_dir = opendir(scripts_path); 1010 if (!scripts_dir) 1011 return -1; 1012 1013 for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) { 1014 snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path, 1015 lang_dirent.d_name); 1016 lang_dir = opendir(lang_path); 1017 if (!lang_dir) 1018 continue; 1019 1020 for_each_script(lang_path, lang_dir, script_dirent, script_next) { 1021 script_root = get_script_root(&script_dirent, REPORT_SUFFIX); 1022 if (script_root) { 1023 desc = script_desc__findnew(script_root); 1024 snprintf(script_path, MAXPATHLEN, "%s/%s", 1025 lang_path, script_dirent.d_name); 1026 read_script_info(desc, script_path); 1027 free(script_root); 1028 } 1029 } 1030 } 1031 1032 fprintf(stdout, "List of available trace scripts:\n"); 1033 list_for_each_entry(desc, &script_descs, node) { 1034 sprintf(first_half, "%s %s", desc->name, 1035 desc->args ? desc->args : ""); 1036 fprintf(stdout, " %-36s %s\n", first_half, 1037 desc->half_liner ? desc->half_liner : ""); 1038 } 1039 1040 exit(0); 1041 } 1042 1043 /* 1044 * Some scripts specify the required events in their "xxx-record" file, 1045 * this function will check if the events in perf.data match those 1046 * mentioned in the "xxx-record". 1047 * 1048 * Fixme: All existing "xxx-record" are all in good formats "-e event ", 1049 * which is covered well now. And new parsing code should be added to 1050 * cover the future complexing formats like event groups etc. 1051 */ 1052 static int check_ev_match(char *dir_name, char *scriptname, 1053 struct perf_session *session) 1054 { 1055 char filename[MAXPATHLEN], evname[128]; 1056 char line[BUFSIZ], *p; 1057 struct perf_evsel *pos; 1058 int match, len; 1059 FILE *fp; 1060 1061 sprintf(filename, "%s/bin/%s-record", dir_name, scriptname); 1062 1063 fp = fopen(filename, "r"); 1064 if (!fp) 1065 return -1; 1066 1067 while (fgets(line, sizeof(line), fp)) { 1068 p = ltrim(line); 1069 if (*p == '#') 1070 continue; 1071 1072 while (strlen(p)) { 1073 p = strstr(p, "-e"); 1074 if (!p) 1075 break; 1076 1077 p += 2; 1078 p = ltrim(p); 1079 len = strcspn(p, " \t"); 1080 if (!len) 1081 break; 1082 1083 snprintf(evname, len + 1, "%s", p); 1084 1085 match = 0; 1086 list_for_each_entry(pos, 1087 &session->evlist->entries, node) { 1088 if (!strcmp(perf_evsel__name(pos), evname)) { 1089 match = 1; 1090 break; 1091 } 1092 } 1093 1094 if (!match) { 1095 fclose(fp); 1096 return -1; 1097 } 1098 } 1099 } 1100 1101 fclose(fp); 1102 return 0; 1103 } 1104 1105 /* 1106 * Return -1 if none is found, otherwise the actual scripts number. 1107 * 1108 * Currently the only user of this function is the script browser, which 1109 * will list all statically runnable scripts, select one, execute it and 1110 * show the output in a perf browser. 1111 */ 1112 int find_scripts(char **scripts_array, char **scripts_path_array) 1113 { 1114 struct dirent *script_next, *lang_next, script_dirent, lang_dirent; 1115 char scripts_path[MAXPATHLEN], lang_path[MAXPATHLEN]; 1116 DIR *scripts_dir, *lang_dir; 1117 struct perf_session *session; 1118 char *temp; 1119 int i = 0; 1120 1121 session = perf_session__new(input_name, O_RDONLY, 0, false, NULL); 1122 if (!session) 1123 return -1; 1124 1125 snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path()); 1126 1127 scripts_dir = opendir(scripts_path); 1128 if (!scripts_dir) { 1129 perf_session__delete(session); 1130 return -1; 1131 } 1132 1133 for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) { 1134 snprintf(lang_path, MAXPATHLEN, "%s/%s", scripts_path, 1135 lang_dirent.d_name); 1136 #ifdef NO_LIBPERL 1137 if (strstr(lang_path, "perl")) 1138 continue; 1139 #endif 1140 #ifdef NO_LIBPYTHON 1141 if (strstr(lang_path, "python")) 1142 continue; 1143 #endif 1144 1145 lang_dir = opendir(lang_path); 1146 if (!lang_dir) 1147 continue; 1148 1149 for_each_script(lang_path, lang_dir, script_dirent, script_next) { 1150 /* Skip those real time scripts: xxxtop.p[yl] */ 1151 if (strstr(script_dirent.d_name, "top.")) 1152 continue; 1153 sprintf(scripts_path_array[i], "%s/%s", lang_path, 1154 script_dirent.d_name); 1155 temp = strchr(script_dirent.d_name, '.'); 1156 snprintf(scripts_array[i], 1157 (temp - script_dirent.d_name) + 1, 1158 "%s", script_dirent.d_name); 1159 1160 if (check_ev_match(lang_path, 1161 scripts_array[i], session)) 1162 continue; 1163 1164 i++; 1165 } 1166 closedir(lang_dir); 1167 } 1168 1169 closedir(scripts_dir); 1170 perf_session__delete(session); 1171 return i; 1172 } 1173 1174 static char *get_script_path(const char *script_root, const char *suffix) 1175 { 1176 struct dirent *script_next, *lang_next, script_dirent, lang_dirent; 1177 char scripts_path[MAXPATHLEN]; 1178 char script_path[MAXPATHLEN]; 1179 DIR *scripts_dir, *lang_dir; 1180 char lang_path[MAXPATHLEN]; 1181 char *__script_root; 1182 1183 snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path()); 1184 1185 scripts_dir = opendir(scripts_path); 1186 if (!scripts_dir) 1187 return NULL; 1188 1189 for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) { 1190 snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path, 1191 lang_dirent.d_name); 1192 lang_dir = opendir(lang_path); 1193 if (!lang_dir) 1194 continue; 1195 1196 for_each_script(lang_path, lang_dir, script_dirent, script_next) { 1197 __script_root = get_script_root(&script_dirent, suffix); 1198 if (__script_root && !strcmp(script_root, __script_root)) { 1199 free(__script_root); 1200 closedir(lang_dir); 1201 closedir(scripts_dir); 1202 snprintf(script_path, MAXPATHLEN, "%s/%s", 1203 lang_path, script_dirent.d_name); 1204 return strdup(script_path); 1205 } 1206 free(__script_root); 1207 } 1208 closedir(lang_dir); 1209 } 1210 closedir(scripts_dir); 1211 1212 return NULL; 1213 } 1214 1215 static bool is_top_script(const char *script_path) 1216 { 1217 return ends_with(script_path, "top") == NULL ? false : true; 1218 } 1219 1220 static int has_required_arg(char *script_path) 1221 { 1222 struct script_desc *desc; 1223 int n_args = 0; 1224 char *p; 1225 1226 desc = script_desc__new(NULL); 1227 1228 if (read_script_info(desc, script_path)) 1229 goto out; 1230 1231 if (!desc->args) 1232 goto out; 1233 1234 for (p = desc->args; *p; p++) 1235 if (*p == '<') 1236 n_args++; 1237 out: 1238 script_desc__delete(desc); 1239 1240 return n_args; 1241 } 1242 1243 static int have_cmd(int argc, const char **argv) 1244 { 1245 char **__argv = malloc(sizeof(const char *) * argc); 1246 1247 if (!__argv) { 1248 pr_err("malloc failed\n"); 1249 return -1; 1250 } 1251 1252 memcpy(__argv, argv, sizeof(const char *) * argc); 1253 argc = parse_options(argc, (const char **)__argv, record_options, 1254 NULL, PARSE_OPT_STOP_AT_NON_OPTION); 1255 free(__argv); 1256 1257 system_wide = (argc == 0); 1258 1259 return 0; 1260 } 1261 1262 int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused) 1263 { 1264 bool show_full_info = false; 1265 char *rec_script_path = NULL; 1266 char *rep_script_path = NULL; 1267 struct perf_session *session; 1268 char *script_path = NULL; 1269 const char **__argv; 1270 int i, j, err; 1271 const struct option options[] = { 1272 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, 1273 "dump raw trace in ASCII"), 1274 OPT_INCR('v', "verbose", &verbose, 1275 "be more verbose (show symbol address, etc)"), 1276 OPT_BOOLEAN('L', "Latency", &latency_format, 1277 "show latency attributes (irqs/preemption disabled, etc)"), 1278 OPT_CALLBACK_NOOPT('l', "list", NULL, NULL, "list available scripts", 1279 list_available_scripts), 1280 OPT_CALLBACK('s', "script", NULL, "name", 1281 "script file name (lang:script name, script name, or *)", 1282 parse_scriptname), 1283 OPT_STRING('g', "gen-script", &generate_script_lang, "lang", 1284 "generate perf-script.xx script in specified language"), 1285 OPT_STRING('i', "input", &input_name, "file", "input file name"), 1286 OPT_BOOLEAN('d', "debug-mode", &debug_mode, 1287 "do various checks like samples ordering and lost events"), 1288 OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name, 1289 "file", "vmlinux pathname"), 1290 OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name, 1291 "file", "kallsyms pathname"), 1292 OPT_BOOLEAN('G', "hide-call-graph", &no_callchain, 1293 "When printing symbols do not display call chain"), 1294 OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory", 1295 "Look for files with symbols relative to this directory"), 1296 OPT_CALLBACK('f', "fields", NULL, "str", 1297 "comma separated output fields prepend with 'type:'. " 1298 "Valid types: hw,sw,trace,raw. " 1299 "Fields: comm,tid,pid,time,cpu,event,trace,ip,sym,dso," 1300 "addr,symoff", parse_output_fields), 1301 OPT_BOOLEAN('a', "all-cpus", &system_wide, 1302 "system-wide collection from all CPUs"), 1303 OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]", 1304 "only consider these symbols"), 1305 OPT_STRING('C', "cpu", &cpu_list, "cpu", "list of cpus to profile"), 1306 OPT_STRING('c', "comms", &symbol_conf.comm_list_str, "comm[,comm...]", 1307 "only display events for these comms"), 1308 OPT_BOOLEAN('I', "show-info", &show_full_info, 1309 "display extended information from perf.data file"), 1310 OPT_BOOLEAN('\0', "show-kernel-path", &symbol_conf.show_kernel_path, 1311 "Show the path of [kernel.kallsyms]"), 1312 OPT_END() 1313 }; 1314 const char * const script_usage[] = { 1315 "perf script [<options>]", 1316 "perf script [<options>] record <script> [<record-options>] <command>", 1317 "perf script [<options>] report <script> [script-args]", 1318 "perf script [<options>] <script> [<record-options>] <command>", 1319 "perf script [<options>] <top-script> [script-args]", 1320 NULL 1321 }; 1322 1323 setup_scripting(); 1324 1325 argc = parse_options(argc, argv, options, script_usage, 1326 PARSE_OPT_STOP_AT_NON_OPTION); 1327 1328 if (argc > 1 && !strncmp(argv[0], "rec", strlen("rec"))) { 1329 rec_script_path = get_script_path(argv[1], RECORD_SUFFIX); 1330 if (!rec_script_path) 1331 return cmd_record(argc, argv, NULL); 1332 } 1333 1334 if (argc > 1 && !strncmp(argv[0], "rep", strlen("rep"))) { 1335 rep_script_path = get_script_path(argv[1], REPORT_SUFFIX); 1336 if (!rep_script_path) { 1337 fprintf(stderr, 1338 "Please specify a valid report script" 1339 "(see 'perf script -l' for listing)\n"); 1340 return -1; 1341 } 1342 } 1343 1344 /* make sure PERF_EXEC_PATH is set for scripts */ 1345 perf_set_argv_exec_path(perf_exec_path()); 1346 1347 if (argc && !script_name && !rec_script_path && !rep_script_path) { 1348 int live_pipe[2]; 1349 int rep_args; 1350 pid_t pid; 1351 1352 rec_script_path = get_script_path(argv[0], RECORD_SUFFIX); 1353 rep_script_path = get_script_path(argv[0], REPORT_SUFFIX); 1354 1355 if (!rec_script_path && !rep_script_path) { 1356 fprintf(stderr, " Couldn't find script %s\n\n See perf" 1357 " script -l for available scripts.\n", argv[0]); 1358 usage_with_options(script_usage, options); 1359 } 1360 1361 if (is_top_script(argv[0])) { 1362 rep_args = argc - 1; 1363 } else { 1364 int rec_args; 1365 1366 rep_args = has_required_arg(rep_script_path); 1367 rec_args = (argc - 1) - rep_args; 1368 if (rec_args < 0) { 1369 fprintf(stderr, " %s script requires options." 1370 "\n\n See perf script -l for available " 1371 "scripts and options.\n", argv[0]); 1372 usage_with_options(script_usage, options); 1373 } 1374 } 1375 1376 if (pipe(live_pipe) < 0) { 1377 perror("failed to create pipe"); 1378 return -1; 1379 } 1380 1381 pid = fork(); 1382 if (pid < 0) { 1383 perror("failed to fork"); 1384 return -1; 1385 } 1386 1387 if (!pid) { 1388 j = 0; 1389 1390 dup2(live_pipe[1], 1); 1391 close(live_pipe[0]); 1392 1393 if (is_top_script(argv[0])) { 1394 system_wide = true; 1395 } else if (!system_wide) { 1396 if (have_cmd(argc - rep_args, &argv[rep_args]) != 0) { 1397 err = -1; 1398 goto out; 1399 } 1400 } 1401 1402 __argv = malloc((argc + 6) * sizeof(const char *)); 1403 if (!__argv) { 1404 pr_err("malloc failed\n"); 1405 err = -ENOMEM; 1406 goto out; 1407 } 1408 1409 __argv[j++] = "/bin/sh"; 1410 __argv[j++] = rec_script_path; 1411 if (system_wide) 1412 __argv[j++] = "-a"; 1413 __argv[j++] = "-q"; 1414 __argv[j++] = "-o"; 1415 __argv[j++] = "-"; 1416 for (i = rep_args + 1; i < argc; i++) 1417 __argv[j++] = argv[i]; 1418 __argv[j++] = NULL; 1419 1420 execvp("/bin/sh", (char **)__argv); 1421 free(__argv); 1422 exit(-1); 1423 } 1424 1425 dup2(live_pipe[0], 0); 1426 close(live_pipe[1]); 1427 1428 __argv = malloc((argc + 4) * sizeof(const char *)); 1429 if (!__argv) { 1430 pr_err("malloc failed\n"); 1431 err = -ENOMEM; 1432 goto out; 1433 } 1434 1435 j = 0; 1436 __argv[j++] = "/bin/sh"; 1437 __argv[j++] = rep_script_path; 1438 for (i = 1; i < rep_args + 1; i++) 1439 __argv[j++] = argv[i]; 1440 __argv[j++] = "-i"; 1441 __argv[j++] = "-"; 1442 __argv[j++] = NULL; 1443 1444 execvp("/bin/sh", (char **)__argv); 1445 free(__argv); 1446 exit(-1); 1447 } 1448 1449 if (rec_script_path) 1450 script_path = rec_script_path; 1451 if (rep_script_path) 1452 script_path = rep_script_path; 1453 1454 if (script_path) { 1455 j = 0; 1456 1457 if (!rec_script_path) 1458 system_wide = false; 1459 else if (!system_wide) { 1460 if (have_cmd(argc - 1, &argv[1]) != 0) { 1461 err = -1; 1462 goto out; 1463 } 1464 } 1465 1466 __argv = malloc((argc + 2) * sizeof(const char *)); 1467 if (!__argv) { 1468 pr_err("malloc failed\n"); 1469 err = -ENOMEM; 1470 goto out; 1471 } 1472 1473 __argv[j++] = "/bin/sh"; 1474 __argv[j++] = script_path; 1475 if (system_wide) 1476 __argv[j++] = "-a"; 1477 for (i = 2; i < argc; i++) 1478 __argv[j++] = argv[i]; 1479 __argv[j++] = NULL; 1480 1481 execvp("/bin/sh", (char **)__argv); 1482 free(__argv); 1483 exit(-1); 1484 } 1485 1486 if (symbol__init() < 0) 1487 return -1; 1488 if (!script_name) 1489 setup_pager(); 1490 1491 session = perf_session__new(input_name, O_RDONLY, 0, false, 1492 &perf_script); 1493 if (session == NULL) 1494 return -ENOMEM; 1495 1496 if (cpu_list) { 1497 if (perf_session__cpu_bitmap(session, cpu_list, cpu_bitmap)) 1498 return -1; 1499 } 1500 1501 if (!script_name && !generate_script_lang) 1502 perf_session__fprintf_info(session, stdout, show_full_info); 1503 1504 if (!no_callchain) 1505 symbol_conf.use_callchain = true; 1506 else 1507 symbol_conf.use_callchain = false; 1508 1509 if (generate_script_lang) { 1510 struct stat perf_stat; 1511 int input; 1512 1513 if (output_set_by_user()) { 1514 fprintf(stderr, 1515 "custom fields not supported for generated scripts"); 1516 return -1; 1517 } 1518 1519 input = open(session->filename, O_RDONLY); /* input_name */ 1520 if (input < 0) { 1521 perror("failed to open file"); 1522 return -1; 1523 } 1524 1525 err = fstat(input, &perf_stat); 1526 if (err < 0) { 1527 perror("failed to stat file"); 1528 return -1; 1529 } 1530 1531 if (!perf_stat.st_size) { 1532 fprintf(stderr, "zero-sized file, nothing to do!\n"); 1533 return 0; 1534 } 1535 1536 scripting_ops = script_spec__lookup(generate_script_lang); 1537 if (!scripting_ops) { 1538 fprintf(stderr, "invalid language specifier"); 1539 return -1; 1540 } 1541 1542 err = scripting_ops->generate_script(session->pevent, 1543 "perf-script"); 1544 goto out; 1545 } 1546 1547 if (script_name) { 1548 err = scripting_ops->start_script(script_name, argc, argv); 1549 if (err) 1550 goto out; 1551 pr_debug("perf script started with script %s\n\n", script_name); 1552 } 1553 1554 1555 err = perf_session__check_output_opt(session); 1556 if (err < 0) 1557 goto out; 1558 1559 err = __cmd_script(session); 1560 1561 perf_session__delete(session); 1562 cleanup_scripting(); 1563 out: 1564 return err; 1565 } 1566