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 .comm = perf_event__process_comm, 546 .exit = perf_event__process_exit, 547 .fork = perf_event__process_fork, 548 .attr = perf_event__process_attr, 549 .tracing_data = perf_event__process_tracing_data, 550 .build_id = perf_event__process_build_id, 551 .ordered_samples = true, 552 .ordering_requires_timestamps = true, 553 }; 554 555 extern volatile int session_done; 556 557 static void sig_handler(int sig __maybe_unused) 558 { 559 session_done = 1; 560 } 561 562 static int __cmd_script(struct perf_session *session) 563 { 564 int ret; 565 566 signal(SIGINT, sig_handler); 567 568 ret = perf_session__process_events(session, &perf_script); 569 570 if (debug_mode) 571 pr_err("Misordered timestamps: %" PRIu64 "\n", nr_unordered); 572 573 return ret; 574 } 575 576 struct script_spec { 577 struct list_head node; 578 struct scripting_ops *ops; 579 char spec[0]; 580 }; 581 582 static LIST_HEAD(script_specs); 583 584 static struct script_spec *script_spec__new(const char *spec, 585 struct scripting_ops *ops) 586 { 587 struct script_spec *s = malloc(sizeof(*s) + strlen(spec) + 1); 588 589 if (s != NULL) { 590 strcpy(s->spec, spec); 591 s->ops = ops; 592 } 593 594 return s; 595 } 596 597 static void script_spec__add(struct script_spec *s) 598 { 599 list_add_tail(&s->node, &script_specs); 600 } 601 602 static struct script_spec *script_spec__find(const char *spec) 603 { 604 struct script_spec *s; 605 606 list_for_each_entry(s, &script_specs, node) 607 if (strcasecmp(s->spec, spec) == 0) 608 return s; 609 return NULL; 610 } 611 612 static struct script_spec *script_spec__findnew(const char *spec, 613 struct scripting_ops *ops) 614 { 615 struct script_spec *s = script_spec__find(spec); 616 617 if (s) 618 return s; 619 620 s = script_spec__new(spec, ops); 621 if (!s) 622 return NULL; 623 624 script_spec__add(s); 625 626 return s; 627 } 628 629 int script_spec_register(const char *spec, struct scripting_ops *ops) 630 { 631 struct script_spec *s; 632 633 s = script_spec__find(spec); 634 if (s) 635 return -1; 636 637 s = script_spec__findnew(spec, ops); 638 if (!s) 639 return -1; 640 641 return 0; 642 } 643 644 static struct scripting_ops *script_spec__lookup(const char *spec) 645 { 646 struct script_spec *s = script_spec__find(spec); 647 if (!s) 648 return NULL; 649 650 return s->ops; 651 } 652 653 static void list_available_languages(void) 654 { 655 struct script_spec *s; 656 657 fprintf(stderr, "\n"); 658 fprintf(stderr, "Scripting language extensions (used in " 659 "perf script -s [spec:]script.[spec]):\n\n"); 660 661 list_for_each_entry(s, &script_specs, node) 662 fprintf(stderr, " %-42s [%s]\n", s->spec, s->ops->name); 663 664 fprintf(stderr, "\n"); 665 } 666 667 static int parse_scriptname(const struct option *opt __maybe_unused, 668 const char *str, int unset __maybe_unused) 669 { 670 char spec[PATH_MAX]; 671 const char *script, *ext; 672 int len; 673 674 if (strcmp(str, "lang") == 0) { 675 list_available_languages(); 676 exit(0); 677 } 678 679 script = strchr(str, ':'); 680 if (script) { 681 len = script - str; 682 if (len >= PATH_MAX) { 683 fprintf(stderr, "invalid language specifier"); 684 return -1; 685 } 686 strncpy(spec, str, len); 687 spec[len] = '\0'; 688 scripting_ops = script_spec__lookup(spec); 689 if (!scripting_ops) { 690 fprintf(stderr, "invalid language specifier"); 691 return -1; 692 } 693 script++; 694 } else { 695 script = str; 696 ext = strrchr(script, '.'); 697 if (!ext) { 698 fprintf(stderr, "invalid script extension"); 699 return -1; 700 } 701 scripting_ops = script_spec__lookup(++ext); 702 if (!scripting_ops) { 703 fprintf(stderr, "invalid script extension"); 704 return -1; 705 } 706 } 707 708 script_name = strdup(script); 709 710 return 0; 711 } 712 713 static int parse_output_fields(const struct option *opt __maybe_unused, 714 const char *arg, int unset __maybe_unused) 715 { 716 char *tok; 717 int i, imax = ARRAY_SIZE(all_output_options); 718 int j; 719 int rc = 0; 720 char *str = strdup(arg); 721 int type = -1; 722 723 if (!str) 724 return -ENOMEM; 725 726 /* first word can state for which event type the user is specifying 727 * the fields. If no type exists, the specified fields apply to all 728 * event types found in the file minus the invalid fields for a type. 729 */ 730 tok = strchr(str, ':'); 731 if (tok) { 732 *tok = '\0'; 733 tok++; 734 if (!strcmp(str, "hw")) 735 type = PERF_TYPE_HARDWARE; 736 else if (!strcmp(str, "sw")) 737 type = PERF_TYPE_SOFTWARE; 738 else if (!strcmp(str, "trace")) 739 type = PERF_TYPE_TRACEPOINT; 740 else if (!strcmp(str, "raw")) 741 type = PERF_TYPE_RAW; 742 else { 743 fprintf(stderr, "Invalid event type in field string.\n"); 744 rc = -EINVAL; 745 goto out; 746 } 747 748 if (output[type].user_set) 749 pr_warning("Overriding previous field request for %s events.\n", 750 event_type(type)); 751 752 output[type].fields = 0; 753 output[type].user_set = true; 754 output[type].wildcard_set = false; 755 756 } else { 757 tok = str; 758 if (strlen(str) == 0) { 759 fprintf(stderr, 760 "Cannot set fields to 'none' for all event types.\n"); 761 rc = -EINVAL; 762 goto out; 763 } 764 765 if (output_set_by_user()) 766 pr_warning("Overriding previous field request for all events.\n"); 767 768 for (j = 0; j < PERF_TYPE_MAX; ++j) { 769 output[j].fields = 0; 770 output[j].user_set = true; 771 output[j].wildcard_set = true; 772 } 773 } 774 775 tok = strtok(tok, ","); 776 while (tok) { 777 for (i = 0; i < imax; ++i) { 778 if (strcmp(tok, all_output_options[i].str) == 0) 779 break; 780 } 781 if (i == imax) { 782 fprintf(stderr, "Invalid field requested.\n"); 783 rc = -EINVAL; 784 goto out; 785 } 786 787 if (type == -1) { 788 /* add user option to all events types for 789 * which it is valid 790 */ 791 for (j = 0; j < PERF_TYPE_MAX; ++j) { 792 if (output[j].invalid_fields & all_output_options[i].field) { 793 pr_warning("\'%s\' not valid for %s events. Ignoring.\n", 794 all_output_options[i].str, event_type(j)); 795 } else 796 output[j].fields |= all_output_options[i].field; 797 } 798 } else { 799 if (output[type].invalid_fields & all_output_options[i].field) { 800 fprintf(stderr, "\'%s\' not valid for %s events.\n", 801 all_output_options[i].str, event_type(type)); 802 803 rc = -EINVAL; 804 goto out; 805 } 806 output[type].fields |= all_output_options[i].field; 807 } 808 809 tok = strtok(NULL, ","); 810 } 811 812 if (type >= 0) { 813 if (output[type].fields == 0) { 814 pr_debug("No fields requested for %s type. " 815 "Events will not be displayed.\n", event_type(type)); 816 } 817 } 818 819 out: 820 free(str); 821 return rc; 822 } 823 824 /* Helper function for filesystems that return a dent->d_type DT_UNKNOWN */ 825 static int is_directory(const char *base_path, const struct dirent *dent) 826 { 827 char path[PATH_MAX]; 828 struct stat st; 829 830 sprintf(path, "%s/%s", base_path, dent->d_name); 831 if (stat(path, &st)) 832 return 0; 833 834 return S_ISDIR(st.st_mode); 835 } 836 837 #define for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next)\ 838 while (!readdir_r(scripts_dir, &lang_dirent, &lang_next) && \ 839 lang_next) \ 840 if ((lang_dirent.d_type == DT_DIR || \ 841 (lang_dirent.d_type == DT_UNKNOWN && \ 842 is_directory(scripts_path, &lang_dirent))) && \ 843 (strcmp(lang_dirent.d_name, ".")) && \ 844 (strcmp(lang_dirent.d_name, ".."))) 845 846 #define for_each_script(lang_path, lang_dir, script_dirent, script_next)\ 847 while (!readdir_r(lang_dir, &script_dirent, &script_next) && \ 848 script_next) \ 849 if (script_dirent.d_type != DT_DIR && \ 850 (script_dirent.d_type != DT_UNKNOWN || \ 851 !is_directory(lang_path, &script_dirent))) 852 853 854 #define RECORD_SUFFIX "-record" 855 #define REPORT_SUFFIX "-report" 856 857 struct script_desc { 858 struct list_head node; 859 char *name; 860 char *half_liner; 861 char *args; 862 }; 863 864 static LIST_HEAD(script_descs); 865 866 static struct script_desc *script_desc__new(const char *name) 867 { 868 struct script_desc *s = zalloc(sizeof(*s)); 869 870 if (s != NULL && name) 871 s->name = strdup(name); 872 873 return s; 874 } 875 876 static void script_desc__delete(struct script_desc *s) 877 { 878 free(s->name); 879 free(s->half_liner); 880 free(s->args); 881 free(s); 882 } 883 884 static void script_desc__add(struct script_desc *s) 885 { 886 list_add_tail(&s->node, &script_descs); 887 } 888 889 static struct script_desc *script_desc__find(const char *name) 890 { 891 struct script_desc *s; 892 893 list_for_each_entry(s, &script_descs, node) 894 if (strcasecmp(s->name, name) == 0) 895 return s; 896 return NULL; 897 } 898 899 static struct script_desc *script_desc__findnew(const char *name) 900 { 901 struct script_desc *s = script_desc__find(name); 902 903 if (s) 904 return s; 905 906 s = script_desc__new(name); 907 if (!s) 908 goto out_delete_desc; 909 910 script_desc__add(s); 911 912 return s; 913 914 out_delete_desc: 915 script_desc__delete(s); 916 917 return NULL; 918 } 919 920 static const char *ends_with(const char *str, const char *suffix) 921 { 922 size_t suffix_len = strlen(suffix); 923 const char *p = str; 924 925 if (strlen(str) > suffix_len) { 926 p = str + strlen(str) - suffix_len; 927 if (!strncmp(p, suffix, suffix_len)) 928 return p; 929 } 930 931 return NULL; 932 } 933 934 static int read_script_info(struct script_desc *desc, const char *filename) 935 { 936 char line[BUFSIZ], *p; 937 FILE *fp; 938 939 fp = fopen(filename, "r"); 940 if (!fp) 941 return -1; 942 943 while (fgets(line, sizeof(line), fp)) { 944 p = ltrim(line); 945 if (strlen(p) == 0) 946 continue; 947 if (*p != '#') 948 continue; 949 p++; 950 if (strlen(p) && *p == '!') 951 continue; 952 953 p = ltrim(p); 954 if (strlen(p) && p[strlen(p) - 1] == '\n') 955 p[strlen(p) - 1] = '\0'; 956 957 if (!strncmp(p, "description:", strlen("description:"))) { 958 p += strlen("description:"); 959 desc->half_liner = strdup(ltrim(p)); 960 continue; 961 } 962 963 if (!strncmp(p, "args:", strlen("args:"))) { 964 p += strlen("args:"); 965 desc->args = strdup(ltrim(p)); 966 continue; 967 } 968 } 969 970 fclose(fp); 971 972 return 0; 973 } 974 975 static char *get_script_root(struct dirent *script_dirent, const char *suffix) 976 { 977 char *script_root, *str; 978 979 script_root = strdup(script_dirent->d_name); 980 if (!script_root) 981 return NULL; 982 983 str = (char *)ends_with(script_root, suffix); 984 if (!str) { 985 free(script_root); 986 return NULL; 987 } 988 989 *str = '\0'; 990 return script_root; 991 } 992 993 static int list_available_scripts(const struct option *opt __maybe_unused, 994 const char *s __maybe_unused, 995 int unset __maybe_unused) 996 { 997 struct dirent *script_next, *lang_next, script_dirent, lang_dirent; 998 char scripts_path[MAXPATHLEN]; 999 DIR *scripts_dir, *lang_dir; 1000 char script_path[MAXPATHLEN]; 1001 char lang_path[MAXPATHLEN]; 1002 struct script_desc *desc; 1003 char first_half[BUFSIZ]; 1004 char *script_root; 1005 1006 snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path()); 1007 1008 scripts_dir = opendir(scripts_path); 1009 if (!scripts_dir) 1010 return -1; 1011 1012 for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) { 1013 snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path, 1014 lang_dirent.d_name); 1015 lang_dir = opendir(lang_path); 1016 if (!lang_dir) 1017 continue; 1018 1019 for_each_script(lang_path, lang_dir, script_dirent, script_next) { 1020 script_root = get_script_root(&script_dirent, REPORT_SUFFIX); 1021 if (script_root) { 1022 desc = script_desc__findnew(script_root); 1023 snprintf(script_path, MAXPATHLEN, "%s/%s", 1024 lang_path, script_dirent.d_name); 1025 read_script_info(desc, script_path); 1026 free(script_root); 1027 } 1028 } 1029 } 1030 1031 fprintf(stdout, "List of available trace scripts:\n"); 1032 list_for_each_entry(desc, &script_descs, node) { 1033 sprintf(first_half, "%s %s", desc->name, 1034 desc->args ? desc->args : ""); 1035 fprintf(stdout, " %-36s %s\n", first_half, 1036 desc->half_liner ? desc->half_liner : ""); 1037 } 1038 1039 exit(0); 1040 } 1041 1042 /* 1043 * Some scripts specify the required events in their "xxx-record" file, 1044 * this function will check if the events in perf.data match those 1045 * mentioned in the "xxx-record". 1046 * 1047 * Fixme: All existing "xxx-record" are all in good formats "-e event ", 1048 * which is covered well now. And new parsing code should be added to 1049 * cover the future complexing formats like event groups etc. 1050 */ 1051 static int check_ev_match(char *dir_name, char *scriptname, 1052 struct perf_session *session) 1053 { 1054 char filename[MAXPATHLEN], evname[128]; 1055 char line[BUFSIZ], *p; 1056 struct perf_evsel *pos; 1057 int match, len; 1058 FILE *fp; 1059 1060 sprintf(filename, "%s/bin/%s-record", dir_name, scriptname); 1061 1062 fp = fopen(filename, "r"); 1063 if (!fp) 1064 return -1; 1065 1066 while (fgets(line, sizeof(line), fp)) { 1067 p = ltrim(line); 1068 if (*p == '#') 1069 continue; 1070 1071 while (strlen(p)) { 1072 p = strstr(p, "-e"); 1073 if (!p) 1074 break; 1075 1076 p += 2; 1077 p = ltrim(p); 1078 len = strcspn(p, " \t"); 1079 if (!len) 1080 break; 1081 1082 snprintf(evname, len + 1, "%s", p); 1083 1084 match = 0; 1085 list_for_each_entry(pos, 1086 &session->evlist->entries, node) { 1087 if (!strcmp(perf_evsel__name(pos), evname)) { 1088 match = 1; 1089 break; 1090 } 1091 } 1092 1093 if (!match) { 1094 fclose(fp); 1095 return -1; 1096 } 1097 } 1098 } 1099 1100 fclose(fp); 1101 return 0; 1102 } 1103 1104 /* 1105 * Return -1 if none is found, otherwise the actual scripts number. 1106 * 1107 * Currently the only user of this function is the script browser, which 1108 * will list all statically runnable scripts, select one, execute it and 1109 * show the output in a perf browser. 1110 */ 1111 int find_scripts(char **scripts_array, char **scripts_path_array) 1112 { 1113 struct dirent *script_next, *lang_next, script_dirent, lang_dirent; 1114 char scripts_path[MAXPATHLEN], lang_path[MAXPATHLEN]; 1115 DIR *scripts_dir, *lang_dir; 1116 struct perf_session *session; 1117 char *temp; 1118 int i = 0; 1119 1120 session = perf_session__new(input_name, O_RDONLY, 0, false, NULL); 1121 if (!session) 1122 return -1; 1123 1124 snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path()); 1125 1126 scripts_dir = opendir(scripts_path); 1127 if (!scripts_dir) { 1128 perf_session__delete(session); 1129 return -1; 1130 } 1131 1132 for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) { 1133 snprintf(lang_path, MAXPATHLEN, "%s/%s", scripts_path, 1134 lang_dirent.d_name); 1135 #ifdef NO_LIBPERL 1136 if (strstr(lang_path, "perl")) 1137 continue; 1138 #endif 1139 #ifdef NO_LIBPYTHON 1140 if (strstr(lang_path, "python")) 1141 continue; 1142 #endif 1143 1144 lang_dir = opendir(lang_path); 1145 if (!lang_dir) 1146 continue; 1147 1148 for_each_script(lang_path, lang_dir, script_dirent, script_next) { 1149 /* Skip those real time scripts: xxxtop.p[yl] */ 1150 if (strstr(script_dirent.d_name, "top.")) 1151 continue; 1152 sprintf(scripts_path_array[i], "%s/%s", lang_path, 1153 script_dirent.d_name); 1154 temp = strchr(script_dirent.d_name, '.'); 1155 snprintf(scripts_array[i], 1156 (temp - script_dirent.d_name) + 1, 1157 "%s", script_dirent.d_name); 1158 1159 if (check_ev_match(lang_path, 1160 scripts_array[i], session)) 1161 continue; 1162 1163 i++; 1164 } 1165 closedir(lang_dir); 1166 } 1167 1168 closedir(scripts_dir); 1169 perf_session__delete(session); 1170 return i; 1171 } 1172 1173 static char *get_script_path(const char *script_root, const char *suffix) 1174 { 1175 struct dirent *script_next, *lang_next, script_dirent, lang_dirent; 1176 char scripts_path[MAXPATHLEN]; 1177 char script_path[MAXPATHLEN]; 1178 DIR *scripts_dir, *lang_dir; 1179 char lang_path[MAXPATHLEN]; 1180 char *__script_root; 1181 1182 snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path()); 1183 1184 scripts_dir = opendir(scripts_path); 1185 if (!scripts_dir) 1186 return NULL; 1187 1188 for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) { 1189 snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path, 1190 lang_dirent.d_name); 1191 lang_dir = opendir(lang_path); 1192 if (!lang_dir) 1193 continue; 1194 1195 for_each_script(lang_path, lang_dir, script_dirent, script_next) { 1196 __script_root = get_script_root(&script_dirent, suffix); 1197 if (__script_root && !strcmp(script_root, __script_root)) { 1198 free(__script_root); 1199 closedir(lang_dir); 1200 closedir(scripts_dir); 1201 snprintf(script_path, MAXPATHLEN, "%s/%s", 1202 lang_path, script_dirent.d_name); 1203 return strdup(script_path); 1204 } 1205 free(__script_root); 1206 } 1207 closedir(lang_dir); 1208 } 1209 closedir(scripts_dir); 1210 1211 return NULL; 1212 } 1213 1214 static bool is_top_script(const char *script_path) 1215 { 1216 return ends_with(script_path, "top") == NULL ? false : true; 1217 } 1218 1219 static int has_required_arg(char *script_path) 1220 { 1221 struct script_desc *desc; 1222 int n_args = 0; 1223 char *p; 1224 1225 desc = script_desc__new(NULL); 1226 1227 if (read_script_info(desc, script_path)) 1228 goto out; 1229 1230 if (!desc->args) 1231 goto out; 1232 1233 for (p = desc->args; *p; p++) 1234 if (*p == '<') 1235 n_args++; 1236 out: 1237 script_desc__delete(desc); 1238 1239 return n_args; 1240 } 1241 1242 static int have_cmd(int argc, const char **argv) 1243 { 1244 char **__argv = malloc(sizeof(const char *) * argc); 1245 1246 if (!__argv) { 1247 pr_err("malloc failed\n"); 1248 return -1; 1249 } 1250 1251 memcpy(__argv, argv, sizeof(const char *) * argc); 1252 argc = parse_options(argc, (const char **)__argv, record_options, 1253 NULL, PARSE_OPT_STOP_AT_NON_OPTION); 1254 free(__argv); 1255 1256 system_wide = (argc == 0); 1257 1258 return 0; 1259 } 1260 1261 int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused) 1262 { 1263 bool show_full_info = false; 1264 char *rec_script_path = NULL; 1265 char *rep_script_path = NULL; 1266 struct perf_session *session; 1267 char *script_path = NULL; 1268 const char **__argv; 1269 int i, j, err; 1270 const struct option options[] = { 1271 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, 1272 "dump raw trace in ASCII"), 1273 OPT_INCR('v', "verbose", &verbose, 1274 "be more verbose (show symbol address, etc)"), 1275 OPT_BOOLEAN('L', "Latency", &latency_format, 1276 "show latency attributes (irqs/preemption disabled, etc)"), 1277 OPT_CALLBACK_NOOPT('l', "list", NULL, NULL, "list available scripts", 1278 list_available_scripts), 1279 OPT_CALLBACK('s', "script", NULL, "name", 1280 "script file name (lang:script name, script name, or *)", 1281 parse_scriptname), 1282 OPT_STRING('g', "gen-script", &generate_script_lang, "lang", 1283 "generate perf-script.xx script in specified language"), 1284 OPT_STRING('i', "input", &input_name, "file", "input file name"), 1285 OPT_BOOLEAN('d', "debug-mode", &debug_mode, 1286 "do various checks like samples ordering and lost events"), 1287 OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name, 1288 "file", "vmlinux pathname"), 1289 OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name, 1290 "file", "kallsyms pathname"), 1291 OPT_BOOLEAN('G', "hide-call-graph", &no_callchain, 1292 "When printing symbols do not display call chain"), 1293 OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory", 1294 "Look for files with symbols relative to this directory"), 1295 OPT_CALLBACK('f', "fields", NULL, "str", 1296 "comma separated output fields prepend with 'type:'. " 1297 "Valid types: hw,sw,trace,raw. " 1298 "Fields: comm,tid,pid,time,cpu,event,trace,ip,sym,dso," 1299 "addr,symoff", parse_output_fields), 1300 OPT_BOOLEAN('a', "all-cpus", &system_wide, 1301 "system-wide collection from all CPUs"), 1302 OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]", 1303 "only consider these symbols"), 1304 OPT_STRING('C', "cpu", &cpu_list, "cpu", "list of cpus to profile"), 1305 OPT_STRING('c', "comms", &symbol_conf.comm_list_str, "comm[,comm...]", 1306 "only display events for these comms"), 1307 OPT_BOOLEAN('I', "show-info", &show_full_info, 1308 "display extended information from perf.data file"), 1309 OPT_BOOLEAN('\0', "show-kernel-path", &symbol_conf.show_kernel_path, 1310 "Show the path of [kernel.kallsyms]"), 1311 OPT_END() 1312 }; 1313 const char * const script_usage[] = { 1314 "perf script [<options>]", 1315 "perf script [<options>] record <script> [<record-options>] <command>", 1316 "perf script [<options>] report <script> [script-args]", 1317 "perf script [<options>] <script> [<record-options>] <command>", 1318 "perf script [<options>] <top-script> [script-args]", 1319 NULL 1320 }; 1321 1322 setup_scripting(); 1323 1324 argc = parse_options(argc, argv, options, script_usage, 1325 PARSE_OPT_STOP_AT_NON_OPTION); 1326 1327 if (argc > 1 && !strncmp(argv[0], "rec", strlen("rec"))) { 1328 rec_script_path = get_script_path(argv[1], RECORD_SUFFIX); 1329 if (!rec_script_path) 1330 return cmd_record(argc, argv, NULL); 1331 } 1332 1333 if (argc > 1 && !strncmp(argv[0], "rep", strlen("rep"))) { 1334 rep_script_path = get_script_path(argv[1], REPORT_SUFFIX); 1335 if (!rep_script_path) { 1336 fprintf(stderr, 1337 "Please specify a valid report script" 1338 "(see 'perf script -l' for listing)\n"); 1339 return -1; 1340 } 1341 } 1342 1343 /* make sure PERF_EXEC_PATH is set for scripts */ 1344 perf_set_argv_exec_path(perf_exec_path()); 1345 1346 if (argc && !script_name && !rec_script_path && !rep_script_path) { 1347 int live_pipe[2]; 1348 int rep_args; 1349 pid_t pid; 1350 1351 rec_script_path = get_script_path(argv[0], RECORD_SUFFIX); 1352 rep_script_path = get_script_path(argv[0], REPORT_SUFFIX); 1353 1354 if (!rec_script_path && !rep_script_path) { 1355 fprintf(stderr, " Couldn't find script %s\n\n See perf" 1356 " script -l for available scripts.\n", argv[0]); 1357 usage_with_options(script_usage, options); 1358 } 1359 1360 if (is_top_script(argv[0])) { 1361 rep_args = argc - 1; 1362 } else { 1363 int rec_args; 1364 1365 rep_args = has_required_arg(rep_script_path); 1366 rec_args = (argc - 1) - rep_args; 1367 if (rec_args < 0) { 1368 fprintf(stderr, " %s script requires options." 1369 "\n\n See perf script -l for available " 1370 "scripts and options.\n", argv[0]); 1371 usage_with_options(script_usage, options); 1372 } 1373 } 1374 1375 if (pipe(live_pipe) < 0) { 1376 perror("failed to create pipe"); 1377 return -1; 1378 } 1379 1380 pid = fork(); 1381 if (pid < 0) { 1382 perror("failed to fork"); 1383 return -1; 1384 } 1385 1386 if (!pid) { 1387 j = 0; 1388 1389 dup2(live_pipe[1], 1); 1390 close(live_pipe[0]); 1391 1392 if (is_top_script(argv[0])) { 1393 system_wide = true; 1394 } else if (!system_wide) { 1395 if (have_cmd(argc - rep_args, &argv[rep_args]) != 0) { 1396 err = -1; 1397 goto out; 1398 } 1399 } 1400 1401 __argv = malloc((argc + 6) * sizeof(const char *)); 1402 if (!__argv) { 1403 pr_err("malloc failed\n"); 1404 err = -ENOMEM; 1405 goto out; 1406 } 1407 1408 __argv[j++] = "/bin/sh"; 1409 __argv[j++] = rec_script_path; 1410 if (system_wide) 1411 __argv[j++] = "-a"; 1412 __argv[j++] = "-q"; 1413 __argv[j++] = "-o"; 1414 __argv[j++] = "-"; 1415 for (i = rep_args + 1; i < argc; i++) 1416 __argv[j++] = argv[i]; 1417 __argv[j++] = NULL; 1418 1419 execvp("/bin/sh", (char **)__argv); 1420 free(__argv); 1421 exit(-1); 1422 } 1423 1424 dup2(live_pipe[0], 0); 1425 close(live_pipe[1]); 1426 1427 __argv = malloc((argc + 4) * sizeof(const char *)); 1428 if (!__argv) { 1429 pr_err("malloc failed\n"); 1430 err = -ENOMEM; 1431 goto out; 1432 } 1433 1434 j = 0; 1435 __argv[j++] = "/bin/sh"; 1436 __argv[j++] = rep_script_path; 1437 for (i = 1; i < rep_args + 1; i++) 1438 __argv[j++] = argv[i]; 1439 __argv[j++] = "-i"; 1440 __argv[j++] = "-"; 1441 __argv[j++] = NULL; 1442 1443 execvp("/bin/sh", (char **)__argv); 1444 free(__argv); 1445 exit(-1); 1446 } 1447 1448 if (rec_script_path) 1449 script_path = rec_script_path; 1450 if (rep_script_path) 1451 script_path = rep_script_path; 1452 1453 if (script_path) { 1454 j = 0; 1455 1456 if (!rec_script_path) 1457 system_wide = false; 1458 else if (!system_wide) { 1459 if (have_cmd(argc - 1, &argv[1]) != 0) { 1460 err = -1; 1461 goto out; 1462 } 1463 } 1464 1465 __argv = malloc((argc + 2) * sizeof(const char *)); 1466 if (!__argv) { 1467 pr_err("malloc failed\n"); 1468 err = -ENOMEM; 1469 goto out; 1470 } 1471 1472 __argv[j++] = "/bin/sh"; 1473 __argv[j++] = script_path; 1474 if (system_wide) 1475 __argv[j++] = "-a"; 1476 for (i = 2; i < argc; i++) 1477 __argv[j++] = argv[i]; 1478 __argv[j++] = NULL; 1479 1480 execvp("/bin/sh", (char **)__argv); 1481 free(__argv); 1482 exit(-1); 1483 } 1484 1485 if (symbol__init() < 0) 1486 return -1; 1487 if (!script_name) 1488 setup_pager(); 1489 1490 session = perf_session__new(input_name, O_RDONLY, 0, false, 1491 &perf_script); 1492 if (session == NULL) 1493 return -ENOMEM; 1494 1495 if (cpu_list) { 1496 if (perf_session__cpu_bitmap(session, cpu_list, cpu_bitmap)) 1497 return -1; 1498 } 1499 1500 if (!script_name && !generate_script_lang) 1501 perf_session__fprintf_info(session, stdout, show_full_info); 1502 1503 if (!no_callchain) 1504 symbol_conf.use_callchain = true; 1505 else 1506 symbol_conf.use_callchain = false; 1507 1508 if (generate_script_lang) { 1509 struct stat perf_stat; 1510 int input; 1511 1512 if (output_set_by_user()) { 1513 fprintf(stderr, 1514 "custom fields not supported for generated scripts"); 1515 return -1; 1516 } 1517 1518 input = open(session->filename, O_RDONLY); /* input_name */ 1519 if (input < 0) { 1520 perror("failed to open file"); 1521 return -1; 1522 } 1523 1524 err = fstat(input, &perf_stat); 1525 if (err < 0) { 1526 perror("failed to stat file"); 1527 return -1; 1528 } 1529 1530 if (!perf_stat.st_size) { 1531 fprintf(stderr, "zero-sized file, nothing to do!\n"); 1532 return 0; 1533 } 1534 1535 scripting_ops = script_spec__lookup(generate_script_lang); 1536 if (!scripting_ops) { 1537 fprintf(stderr, "invalid language specifier"); 1538 return -1; 1539 } 1540 1541 err = scripting_ops->generate_script(session->pevent, 1542 "perf-script"); 1543 goto out; 1544 } 1545 1546 if (script_name) { 1547 err = scripting_ops->start_script(script_name, argc, argv); 1548 if (err) 1549 goto out; 1550 pr_debug("perf script started with script %s\n\n", script_name); 1551 } 1552 1553 1554 err = perf_session__check_output_opt(session); 1555 if (err < 0) 1556 goto out; 1557 1558 err = __cmd_script(session); 1559 1560 perf_session__delete(session); 1561 cleanup_scripting(); 1562 out: 1563 return err; 1564 } 1565