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 "util/data.h" 19 #include <linux/bitmap.h> 20 21 static char const *script_name; 22 static char const *generate_script_lang; 23 static bool debug_mode; 24 static u64 last_timestamp; 25 static u64 nr_unordered; 26 extern const struct option record_options[]; 27 static bool no_callchain; 28 static bool latency_format; 29 static bool system_wide; 30 static const char *cpu_list; 31 static DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS); 32 33 enum perf_output_field { 34 PERF_OUTPUT_COMM = 1U << 0, 35 PERF_OUTPUT_TID = 1U << 1, 36 PERF_OUTPUT_PID = 1U << 2, 37 PERF_OUTPUT_TIME = 1U << 3, 38 PERF_OUTPUT_CPU = 1U << 4, 39 PERF_OUTPUT_EVNAME = 1U << 5, 40 PERF_OUTPUT_TRACE = 1U << 6, 41 PERF_OUTPUT_IP = 1U << 7, 42 PERF_OUTPUT_SYM = 1U << 8, 43 PERF_OUTPUT_DSO = 1U << 9, 44 PERF_OUTPUT_ADDR = 1U << 10, 45 PERF_OUTPUT_SYMOFFSET = 1U << 11, 46 }; 47 48 struct output_option { 49 const char *str; 50 enum perf_output_field field; 51 } all_output_options[] = { 52 {.str = "comm", .field = PERF_OUTPUT_COMM}, 53 {.str = "tid", .field = PERF_OUTPUT_TID}, 54 {.str = "pid", .field = PERF_OUTPUT_PID}, 55 {.str = "time", .field = PERF_OUTPUT_TIME}, 56 {.str = "cpu", .field = PERF_OUTPUT_CPU}, 57 {.str = "event", .field = PERF_OUTPUT_EVNAME}, 58 {.str = "trace", .field = PERF_OUTPUT_TRACE}, 59 {.str = "ip", .field = PERF_OUTPUT_IP}, 60 {.str = "sym", .field = PERF_OUTPUT_SYM}, 61 {.str = "dso", .field = PERF_OUTPUT_DSO}, 62 {.str = "addr", .field = PERF_OUTPUT_ADDR}, 63 {.str = "symoff", .field = PERF_OUTPUT_SYMOFFSET}, 64 }; 65 66 /* default set to maintain compatibility with current format */ 67 static struct { 68 bool user_set; 69 bool wildcard_set; 70 unsigned int print_ip_opts; 71 u64 fields; 72 u64 invalid_fields; 73 } output[PERF_TYPE_MAX] = { 74 75 [PERF_TYPE_HARDWARE] = { 76 .user_set = false, 77 78 .fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID | 79 PERF_OUTPUT_CPU | PERF_OUTPUT_TIME | 80 PERF_OUTPUT_EVNAME | PERF_OUTPUT_IP | 81 PERF_OUTPUT_SYM | PERF_OUTPUT_DSO, 82 83 .invalid_fields = PERF_OUTPUT_TRACE, 84 }, 85 86 [PERF_TYPE_SOFTWARE] = { 87 .user_set = false, 88 89 .fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID | 90 PERF_OUTPUT_CPU | PERF_OUTPUT_TIME | 91 PERF_OUTPUT_EVNAME | PERF_OUTPUT_IP | 92 PERF_OUTPUT_SYM | PERF_OUTPUT_DSO, 93 94 .invalid_fields = PERF_OUTPUT_TRACE, 95 }, 96 97 [PERF_TYPE_TRACEPOINT] = { 98 .user_set = false, 99 100 .fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID | 101 PERF_OUTPUT_CPU | PERF_OUTPUT_TIME | 102 PERF_OUTPUT_EVNAME | PERF_OUTPUT_TRACE, 103 }, 104 105 [PERF_TYPE_RAW] = { 106 .user_set = false, 107 108 .fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID | 109 PERF_OUTPUT_CPU | PERF_OUTPUT_TIME | 110 PERF_OUTPUT_EVNAME | PERF_OUTPUT_IP | 111 PERF_OUTPUT_SYM | PERF_OUTPUT_DSO, 112 113 .invalid_fields = PERF_OUTPUT_TRACE, 114 }, 115 }; 116 117 static bool output_set_by_user(void) 118 { 119 int j; 120 for (j = 0; j < PERF_TYPE_MAX; ++j) { 121 if (output[j].user_set) 122 return true; 123 } 124 return false; 125 } 126 127 static const char *output_field2str(enum perf_output_field field) 128 { 129 int i, imax = ARRAY_SIZE(all_output_options); 130 const char *str = ""; 131 132 for (i = 0; i < imax; ++i) { 133 if (all_output_options[i].field == field) { 134 str = all_output_options[i].str; 135 break; 136 } 137 } 138 return str; 139 } 140 141 #define PRINT_FIELD(x) (output[attr->type].fields & PERF_OUTPUT_##x) 142 143 static int perf_evsel__check_stype(struct perf_evsel *evsel, 144 u64 sample_type, const char *sample_msg, 145 enum perf_output_field field) 146 { 147 struct perf_event_attr *attr = &evsel->attr; 148 int type = attr->type; 149 const char *evname; 150 151 if (attr->sample_type & sample_type) 152 return 0; 153 154 if (output[type].user_set) { 155 evname = perf_evsel__name(evsel); 156 pr_err("Samples for '%s' event do not have %s attribute set. " 157 "Cannot print '%s' field.\n", 158 evname, sample_msg, output_field2str(field)); 159 return -1; 160 } 161 162 /* user did not ask for it explicitly so remove from the default list */ 163 output[type].fields &= ~field; 164 evname = perf_evsel__name(evsel); 165 pr_debug("Samples for '%s' event do not have %s attribute set. " 166 "Skipping '%s' field.\n", 167 evname, sample_msg, output_field2str(field)); 168 169 return 0; 170 } 171 172 static int perf_evsel__check_attr(struct perf_evsel *evsel, 173 struct perf_session *session) 174 { 175 struct perf_event_attr *attr = &evsel->attr; 176 177 if (PRINT_FIELD(TRACE) && 178 !perf_session__has_traces(session, "record -R")) 179 return -EINVAL; 180 181 if (PRINT_FIELD(IP)) { 182 if (perf_evsel__check_stype(evsel, PERF_SAMPLE_IP, "IP", 183 PERF_OUTPUT_IP)) 184 return -EINVAL; 185 186 if (!no_callchain && 187 !(attr->sample_type & PERF_SAMPLE_CALLCHAIN)) 188 symbol_conf.use_callchain = false; 189 } 190 191 if (PRINT_FIELD(ADDR) && 192 perf_evsel__check_stype(evsel, PERF_SAMPLE_ADDR, "ADDR", 193 PERF_OUTPUT_ADDR)) 194 return -EINVAL; 195 196 if (PRINT_FIELD(SYM) && !PRINT_FIELD(IP) && !PRINT_FIELD(ADDR)) { 197 pr_err("Display of symbols requested but neither sample IP nor " 198 "sample address\nis selected. Hence, no addresses to convert " 199 "to symbols.\n"); 200 return -EINVAL; 201 } 202 if (PRINT_FIELD(SYMOFFSET) && !PRINT_FIELD(SYM)) { 203 pr_err("Display of offsets requested but symbol is not" 204 "selected.\n"); 205 return -EINVAL; 206 } 207 if (PRINT_FIELD(DSO) && !PRINT_FIELD(IP) && !PRINT_FIELD(ADDR)) { 208 pr_err("Display of DSO requested but neither sample IP nor " 209 "sample address\nis selected. Hence, no addresses to convert " 210 "to DSO.\n"); 211 return -EINVAL; 212 } 213 214 if ((PRINT_FIELD(PID) || PRINT_FIELD(TID)) && 215 perf_evsel__check_stype(evsel, PERF_SAMPLE_TID, "TID", 216 PERF_OUTPUT_TID|PERF_OUTPUT_PID)) 217 return -EINVAL; 218 219 if (PRINT_FIELD(TIME) && 220 perf_evsel__check_stype(evsel, PERF_SAMPLE_TIME, "TIME", 221 PERF_OUTPUT_TIME)) 222 return -EINVAL; 223 224 if (PRINT_FIELD(CPU) && 225 perf_evsel__check_stype(evsel, PERF_SAMPLE_CPU, "CPU", 226 PERF_OUTPUT_CPU)) 227 return -EINVAL; 228 229 return 0; 230 } 231 232 static void set_print_ip_opts(struct perf_event_attr *attr) 233 { 234 unsigned int type = attr->type; 235 236 output[type].print_ip_opts = 0; 237 if (PRINT_FIELD(IP)) 238 output[type].print_ip_opts |= PRINT_IP_OPT_IP; 239 240 if (PRINT_FIELD(SYM)) 241 output[type].print_ip_opts |= PRINT_IP_OPT_SYM; 242 243 if (PRINT_FIELD(DSO)) 244 output[type].print_ip_opts |= PRINT_IP_OPT_DSO; 245 246 if (PRINT_FIELD(SYMOFFSET)) 247 output[type].print_ip_opts |= PRINT_IP_OPT_SYMOFFSET; 248 } 249 250 /* 251 * verify all user requested events exist and the samples 252 * have the expected data 253 */ 254 static int perf_session__check_output_opt(struct perf_session *session) 255 { 256 int j; 257 struct perf_evsel *evsel; 258 259 for (j = 0; j < PERF_TYPE_MAX; ++j) { 260 evsel = perf_session__find_first_evtype(session, j); 261 262 /* 263 * even if fields is set to 0 (ie., show nothing) event must 264 * exist if user explicitly includes it on the command line 265 */ 266 if (!evsel && output[j].user_set && !output[j].wildcard_set) { 267 pr_err("%s events do not exist. " 268 "Remove corresponding -f option to proceed.\n", 269 event_type(j)); 270 return -1; 271 } 272 273 if (evsel && output[j].fields && 274 perf_evsel__check_attr(evsel, session)) 275 return -1; 276 277 if (evsel == NULL) 278 continue; 279 280 set_print_ip_opts(&evsel->attr); 281 } 282 283 return 0; 284 } 285 286 static void print_sample_start(struct perf_sample *sample, 287 struct thread *thread, 288 struct perf_evsel *evsel) 289 { 290 struct perf_event_attr *attr = &evsel->attr; 291 const char *evname = NULL; 292 unsigned long secs; 293 unsigned long usecs; 294 unsigned long long nsecs; 295 296 if (PRINT_FIELD(COMM)) { 297 if (latency_format) 298 printf("%8.8s ", thread__comm_str(thread)); 299 else if (PRINT_FIELD(IP) && symbol_conf.use_callchain) 300 printf("%s ", thread__comm_str(thread)); 301 else 302 printf("%16s ", thread__comm_str(thread)); 303 } 304 305 if (PRINT_FIELD(PID) && PRINT_FIELD(TID)) 306 printf("%5d/%-5d ", sample->pid, sample->tid); 307 else if (PRINT_FIELD(PID)) 308 printf("%5d ", sample->pid); 309 else if (PRINT_FIELD(TID)) 310 printf("%5d ", sample->tid); 311 312 if (PRINT_FIELD(CPU)) { 313 if (latency_format) 314 printf("%3d ", sample->cpu); 315 else 316 printf("[%03d] ", sample->cpu); 317 } 318 319 if (PRINT_FIELD(TIME)) { 320 nsecs = sample->time; 321 secs = nsecs / NSECS_PER_SEC; 322 nsecs -= secs * NSECS_PER_SEC; 323 usecs = nsecs / NSECS_PER_USEC; 324 printf("%5lu.%06lu: ", secs, usecs); 325 } 326 327 if (PRINT_FIELD(EVNAME)) { 328 evname = perf_evsel__name(evsel); 329 printf("%s: ", evname ? evname : "[unknown]"); 330 } 331 } 332 333 static bool is_bts_event(struct perf_event_attr *attr) 334 { 335 return ((attr->type == PERF_TYPE_HARDWARE) && 336 (attr->config & PERF_COUNT_HW_BRANCH_INSTRUCTIONS) && 337 (attr->sample_period == 1)); 338 } 339 340 static bool sample_addr_correlates_sym(struct perf_event_attr *attr) 341 { 342 if ((attr->type == PERF_TYPE_SOFTWARE) && 343 ((attr->config == PERF_COUNT_SW_PAGE_FAULTS) || 344 (attr->config == PERF_COUNT_SW_PAGE_FAULTS_MIN) || 345 (attr->config == PERF_COUNT_SW_PAGE_FAULTS_MAJ))) 346 return true; 347 348 if (is_bts_event(attr)) 349 return true; 350 351 return false; 352 } 353 354 static void print_sample_addr(union perf_event *event, 355 struct perf_sample *sample, 356 struct machine *machine, 357 struct thread *thread, 358 struct perf_event_attr *attr) 359 { 360 struct addr_location al; 361 u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; 362 363 printf("%16" PRIx64, sample->addr); 364 365 if (!sample_addr_correlates_sym(attr)) 366 return; 367 368 thread__find_addr_map(thread, machine, cpumode, MAP__FUNCTION, 369 sample->addr, &al); 370 if (!al.map) 371 thread__find_addr_map(thread, machine, cpumode, MAP__VARIABLE, 372 sample->addr, &al); 373 374 al.cpu = sample->cpu; 375 al.sym = NULL; 376 377 if (al.map) 378 al.sym = map__find_symbol(al.map, al.addr, NULL); 379 380 if (PRINT_FIELD(SYM)) { 381 printf(" "); 382 if (PRINT_FIELD(SYMOFFSET)) 383 symbol__fprintf_symname_offs(al.sym, &al, stdout); 384 else 385 symbol__fprintf_symname(al.sym, stdout); 386 } 387 388 if (PRINT_FIELD(DSO)) { 389 printf(" ("); 390 map__fprintf_dsoname(al.map, stdout); 391 printf(")"); 392 } 393 } 394 395 static void print_sample_bts(union perf_event *event, 396 struct perf_sample *sample, 397 struct perf_evsel *evsel, 398 struct machine *machine, 399 struct thread *thread) 400 { 401 struct perf_event_attr *attr = &evsel->attr; 402 403 /* print branch_from information */ 404 if (PRINT_FIELD(IP)) { 405 if (!symbol_conf.use_callchain) 406 printf(" "); 407 else 408 printf("\n"); 409 perf_evsel__print_ip(evsel, event, sample, machine, 410 output[attr->type].print_ip_opts, 411 PERF_MAX_STACK_DEPTH); 412 } 413 414 printf(" => "); 415 416 /* print branch_to information */ 417 if (PRINT_FIELD(ADDR) || 418 ((evsel->attr.sample_type & PERF_SAMPLE_ADDR) && 419 !output[attr->type].user_set)) 420 print_sample_addr(event, sample, machine, thread, attr); 421 422 printf("\n"); 423 } 424 425 static void process_event(union perf_event *event, struct perf_sample *sample, 426 struct perf_evsel *evsel, struct machine *machine, 427 struct thread *thread, 428 struct addr_location *al __maybe_unused) 429 { 430 struct perf_event_attr *attr = &evsel->attr; 431 432 if (output[attr->type].fields == 0) 433 return; 434 435 print_sample_start(sample, thread, evsel); 436 437 if (is_bts_event(attr)) { 438 print_sample_bts(event, sample, evsel, machine, thread); 439 return; 440 } 441 442 if (PRINT_FIELD(TRACE)) 443 event_format__print(evsel->tp_format, sample->cpu, 444 sample->raw_data, sample->raw_size); 445 if (PRINT_FIELD(ADDR)) 446 print_sample_addr(event, sample, machine, thread, attr); 447 448 if (PRINT_FIELD(IP)) { 449 if (!symbol_conf.use_callchain) 450 printf(" "); 451 else 452 printf("\n"); 453 454 perf_evsel__print_ip(evsel, event, sample, machine, 455 output[attr->type].print_ip_opts, 456 PERF_MAX_STACK_DEPTH); 457 } 458 459 printf("\n"); 460 } 461 462 static int default_start_script(const char *script __maybe_unused, 463 int argc __maybe_unused, 464 const char **argv __maybe_unused) 465 { 466 return 0; 467 } 468 469 static int default_stop_script(void) 470 { 471 return 0; 472 } 473 474 static int default_generate_script(struct pevent *pevent __maybe_unused, 475 const char *outfile __maybe_unused) 476 { 477 return 0; 478 } 479 480 static struct scripting_ops default_scripting_ops = { 481 .start_script = default_start_script, 482 .stop_script = default_stop_script, 483 .process_event = process_event, 484 .generate_script = default_generate_script, 485 }; 486 487 static struct scripting_ops *scripting_ops; 488 489 static void setup_scripting(void) 490 { 491 setup_perl_scripting(); 492 setup_python_scripting(); 493 494 scripting_ops = &default_scripting_ops; 495 } 496 497 static int cleanup_scripting(void) 498 { 499 pr_debug("\nperf script stopped\n"); 500 501 return scripting_ops->stop_script(); 502 } 503 504 static int process_sample_event(struct perf_tool *tool __maybe_unused, 505 union perf_event *event, 506 struct perf_sample *sample, 507 struct perf_evsel *evsel, 508 struct machine *machine) 509 { 510 struct addr_location al; 511 struct thread *thread = machine__findnew_thread(machine, sample->pid, 512 sample->tid); 513 514 if (thread == NULL) { 515 pr_debug("problem processing %d event, skipping it.\n", 516 event->header.type); 517 return -1; 518 } 519 520 if (debug_mode) { 521 if (sample->time < last_timestamp) { 522 pr_err("Samples misordered, previous: %" PRIu64 523 " this: %" PRIu64 "\n", last_timestamp, 524 sample->time); 525 nr_unordered++; 526 } 527 last_timestamp = sample->time; 528 return 0; 529 } 530 531 if (perf_event__preprocess_sample(event, machine, &al, sample) < 0) { 532 pr_err("problem processing %d event, skipping it.\n", 533 event->header.type); 534 return -1; 535 } 536 537 if (al.filtered) 538 return 0; 539 540 if (cpu_list && !test_bit(sample->cpu, cpu_bitmap)) 541 return 0; 542 543 scripting_ops->process_event(event, sample, evsel, machine, thread, &al); 544 545 evsel->hists.stats.total_period += sample->period; 546 return 0; 547 } 548 549 struct perf_script { 550 struct perf_tool tool; 551 struct perf_session *session; 552 }; 553 554 static int process_attr(struct perf_tool *tool, union perf_event *event, 555 struct perf_evlist **pevlist) 556 { 557 struct perf_script *scr = container_of(tool, struct perf_script, tool); 558 struct perf_evlist *evlist; 559 struct perf_evsel *evsel, *pos; 560 int err; 561 562 err = perf_event__process_attr(tool, event, pevlist); 563 if (err) 564 return err; 565 566 evlist = *pevlist; 567 evsel = perf_evlist__last(*pevlist); 568 569 if (evsel->attr.type >= PERF_TYPE_MAX) 570 return 0; 571 572 list_for_each_entry(pos, &evlist->entries, node) { 573 if (pos->attr.type == evsel->attr.type && pos != evsel) 574 return 0; 575 } 576 577 set_print_ip_opts(&evsel->attr); 578 579 return perf_evsel__check_attr(evsel, scr->session); 580 } 581 582 static void sig_handler(int sig __maybe_unused) 583 { 584 session_done = 1; 585 } 586 587 static int __cmd_script(struct perf_script *script) 588 { 589 int ret; 590 591 signal(SIGINT, sig_handler); 592 593 ret = perf_session__process_events(script->session, &script->tool); 594 595 if (debug_mode) 596 pr_err("Misordered timestamps: %" PRIu64 "\n", nr_unordered); 597 598 return ret; 599 } 600 601 struct script_spec { 602 struct list_head node; 603 struct scripting_ops *ops; 604 char spec[0]; 605 }; 606 607 static LIST_HEAD(script_specs); 608 609 static struct script_spec *script_spec__new(const char *spec, 610 struct scripting_ops *ops) 611 { 612 struct script_spec *s = malloc(sizeof(*s) + strlen(spec) + 1); 613 614 if (s != NULL) { 615 strcpy(s->spec, spec); 616 s->ops = ops; 617 } 618 619 return s; 620 } 621 622 static void script_spec__add(struct script_spec *s) 623 { 624 list_add_tail(&s->node, &script_specs); 625 } 626 627 static struct script_spec *script_spec__find(const char *spec) 628 { 629 struct script_spec *s; 630 631 list_for_each_entry(s, &script_specs, node) 632 if (strcasecmp(s->spec, spec) == 0) 633 return s; 634 return NULL; 635 } 636 637 static struct script_spec *script_spec__findnew(const char *spec, 638 struct scripting_ops *ops) 639 { 640 struct script_spec *s = script_spec__find(spec); 641 642 if (s) 643 return s; 644 645 s = script_spec__new(spec, ops); 646 if (!s) 647 return NULL; 648 649 script_spec__add(s); 650 651 return s; 652 } 653 654 int script_spec_register(const char *spec, struct scripting_ops *ops) 655 { 656 struct script_spec *s; 657 658 s = script_spec__find(spec); 659 if (s) 660 return -1; 661 662 s = script_spec__findnew(spec, ops); 663 if (!s) 664 return -1; 665 666 return 0; 667 } 668 669 static struct scripting_ops *script_spec__lookup(const char *spec) 670 { 671 struct script_spec *s = script_spec__find(spec); 672 if (!s) 673 return NULL; 674 675 return s->ops; 676 } 677 678 static void list_available_languages(void) 679 { 680 struct script_spec *s; 681 682 fprintf(stderr, "\n"); 683 fprintf(stderr, "Scripting language extensions (used in " 684 "perf script -s [spec:]script.[spec]):\n\n"); 685 686 list_for_each_entry(s, &script_specs, node) 687 fprintf(stderr, " %-42s [%s]\n", s->spec, s->ops->name); 688 689 fprintf(stderr, "\n"); 690 } 691 692 static int parse_scriptname(const struct option *opt __maybe_unused, 693 const char *str, int unset __maybe_unused) 694 { 695 char spec[PATH_MAX]; 696 const char *script, *ext; 697 int len; 698 699 if (strcmp(str, "lang") == 0) { 700 list_available_languages(); 701 exit(0); 702 } 703 704 script = strchr(str, ':'); 705 if (script) { 706 len = script - str; 707 if (len >= PATH_MAX) { 708 fprintf(stderr, "invalid language specifier"); 709 return -1; 710 } 711 strncpy(spec, str, len); 712 spec[len] = '\0'; 713 scripting_ops = script_spec__lookup(spec); 714 if (!scripting_ops) { 715 fprintf(stderr, "invalid language specifier"); 716 return -1; 717 } 718 script++; 719 } else { 720 script = str; 721 ext = strrchr(script, '.'); 722 if (!ext) { 723 fprintf(stderr, "invalid script extension"); 724 return -1; 725 } 726 scripting_ops = script_spec__lookup(++ext); 727 if (!scripting_ops) { 728 fprintf(stderr, "invalid script extension"); 729 return -1; 730 } 731 } 732 733 script_name = strdup(script); 734 735 return 0; 736 } 737 738 static int parse_output_fields(const struct option *opt __maybe_unused, 739 const char *arg, int unset __maybe_unused) 740 { 741 char *tok; 742 int i, imax = ARRAY_SIZE(all_output_options); 743 int j; 744 int rc = 0; 745 char *str = strdup(arg); 746 int type = -1; 747 748 if (!str) 749 return -ENOMEM; 750 751 /* first word can state for which event type the user is specifying 752 * the fields. If no type exists, the specified fields apply to all 753 * event types found in the file minus the invalid fields for a type. 754 */ 755 tok = strchr(str, ':'); 756 if (tok) { 757 *tok = '\0'; 758 tok++; 759 if (!strcmp(str, "hw")) 760 type = PERF_TYPE_HARDWARE; 761 else if (!strcmp(str, "sw")) 762 type = PERF_TYPE_SOFTWARE; 763 else if (!strcmp(str, "trace")) 764 type = PERF_TYPE_TRACEPOINT; 765 else if (!strcmp(str, "raw")) 766 type = PERF_TYPE_RAW; 767 else { 768 fprintf(stderr, "Invalid event type in field string.\n"); 769 rc = -EINVAL; 770 goto out; 771 } 772 773 if (output[type].user_set) 774 pr_warning("Overriding previous field request for %s events.\n", 775 event_type(type)); 776 777 output[type].fields = 0; 778 output[type].user_set = true; 779 output[type].wildcard_set = false; 780 781 } else { 782 tok = str; 783 if (strlen(str) == 0) { 784 fprintf(stderr, 785 "Cannot set fields to 'none' for all event types.\n"); 786 rc = -EINVAL; 787 goto out; 788 } 789 790 if (output_set_by_user()) 791 pr_warning("Overriding previous field request for all events.\n"); 792 793 for (j = 0; j < PERF_TYPE_MAX; ++j) { 794 output[j].fields = 0; 795 output[j].user_set = true; 796 output[j].wildcard_set = true; 797 } 798 } 799 800 tok = strtok(tok, ","); 801 while (tok) { 802 for (i = 0; i < imax; ++i) { 803 if (strcmp(tok, all_output_options[i].str) == 0) 804 break; 805 } 806 if (i == imax) { 807 fprintf(stderr, "Invalid field requested.\n"); 808 rc = -EINVAL; 809 goto out; 810 } 811 812 if (type == -1) { 813 /* add user option to all events types for 814 * which it is valid 815 */ 816 for (j = 0; j < PERF_TYPE_MAX; ++j) { 817 if (output[j].invalid_fields & all_output_options[i].field) { 818 pr_warning("\'%s\' not valid for %s events. Ignoring.\n", 819 all_output_options[i].str, event_type(j)); 820 } else 821 output[j].fields |= all_output_options[i].field; 822 } 823 } else { 824 if (output[type].invalid_fields & all_output_options[i].field) { 825 fprintf(stderr, "\'%s\' not valid for %s events.\n", 826 all_output_options[i].str, event_type(type)); 827 828 rc = -EINVAL; 829 goto out; 830 } 831 output[type].fields |= all_output_options[i].field; 832 } 833 834 tok = strtok(NULL, ","); 835 } 836 837 if (type >= 0) { 838 if (output[type].fields == 0) { 839 pr_debug("No fields requested for %s type. " 840 "Events will not be displayed.\n", event_type(type)); 841 } 842 } 843 844 out: 845 free(str); 846 return rc; 847 } 848 849 /* Helper function for filesystems that return a dent->d_type DT_UNKNOWN */ 850 static int is_directory(const char *base_path, const struct dirent *dent) 851 { 852 char path[PATH_MAX]; 853 struct stat st; 854 855 sprintf(path, "%s/%s", base_path, dent->d_name); 856 if (stat(path, &st)) 857 return 0; 858 859 return S_ISDIR(st.st_mode); 860 } 861 862 #define for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next)\ 863 while (!readdir_r(scripts_dir, &lang_dirent, &lang_next) && \ 864 lang_next) \ 865 if ((lang_dirent.d_type == DT_DIR || \ 866 (lang_dirent.d_type == DT_UNKNOWN && \ 867 is_directory(scripts_path, &lang_dirent))) && \ 868 (strcmp(lang_dirent.d_name, ".")) && \ 869 (strcmp(lang_dirent.d_name, ".."))) 870 871 #define for_each_script(lang_path, lang_dir, script_dirent, script_next)\ 872 while (!readdir_r(lang_dir, &script_dirent, &script_next) && \ 873 script_next) \ 874 if (script_dirent.d_type != DT_DIR && \ 875 (script_dirent.d_type != DT_UNKNOWN || \ 876 !is_directory(lang_path, &script_dirent))) 877 878 879 #define RECORD_SUFFIX "-record" 880 #define REPORT_SUFFIX "-report" 881 882 struct script_desc { 883 struct list_head node; 884 char *name; 885 char *half_liner; 886 char *args; 887 }; 888 889 static LIST_HEAD(script_descs); 890 891 static struct script_desc *script_desc__new(const char *name) 892 { 893 struct script_desc *s = zalloc(sizeof(*s)); 894 895 if (s != NULL && name) 896 s->name = strdup(name); 897 898 return s; 899 } 900 901 static void script_desc__delete(struct script_desc *s) 902 { 903 free(s->name); 904 free(s->half_liner); 905 free(s->args); 906 free(s); 907 } 908 909 static void script_desc__add(struct script_desc *s) 910 { 911 list_add_tail(&s->node, &script_descs); 912 } 913 914 static struct script_desc *script_desc__find(const char *name) 915 { 916 struct script_desc *s; 917 918 list_for_each_entry(s, &script_descs, node) 919 if (strcasecmp(s->name, name) == 0) 920 return s; 921 return NULL; 922 } 923 924 static struct script_desc *script_desc__findnew(const char *name) 925 { 926 struct script_desc *s = script_desc__find(name); 927 928 if (s) 929 return s; 930 931 s = script_desc__new(name); 932 if (!s) 933 goto out_delete_desc; 934 935 script_desc__add(s); 936 937 return s; 938 939 out_delete_desc: 940 script_desc__delete(s); 941 942 return NULL; 943 } 944 945 static const char *ends_with(const char *str, const char *suffix) 946 { 947 size_t suffix_len = strlen(suffix); 948 const char *p = str; 949 950 if (strlen(str) > suffix_len) { 951 p = str + strlen(str) - suffix_len; 952 if (!strncmp(p, suffix, suffix_len)) 953 return p; 954 } 955 956 return NULL; 957 } 958 959 static int read_script_info(struct script_desc *desc, const char *filename) 960 { 961 char line[BUFSIZ], *p; 962 FILE *fp; 963 964 fp = fopen(filename, "r"); 965 if (!fp) 966 return -1; 967 968 while (fgets(line, sizeof(line), fp)) { 969 p = ltrim(line); 970 if (strlen(p) == 0) 971 continue; 972 if (*p != '#') 973 continue; 974 p++; 975 if (strlen(p) && *p == '!') 976 continue; 977 978 p = ltrim(p); 979 if (strlen(p) && p[strlen(p) - 1] == '\n') 980 p[strlen(p) - 1] = '\0'; 981 982 if (!strncmp(p, "description:", strlen("description:"))) { 983 p += strlen("description:"); 984 desc->half_liner = strdup(ltrim(p)); 985 continue; 986 } 987 988 if (!strncmp(p, "args:", strlen("args:"))) { 989 p += strlen("args:"); 990 desc->args = strdup(ltrim(p)); 991 continue; 992 } 993 } 994 995 fclose(fp); 996 997 return 0; 998 } 999 1000 static char *get_script_root(struct dirent *script_dirent, const char *suffix) 1001 { 1002 char *script_root, *str; 1003 1004 script_root = strdup(script_dirent->d_name); 1005 if (!script_root) 1006 return NULL; 1007 1008 str = (char *)ends_with(script_root, suffix); 1009 if (!str) { 1010 free(script_root); 1011 return NULL; 1012 } 1013 1014 *str = '\0'; 1015 return script_root; 1016 } 1017 1018 static int list_available_scripts(const struct option *opt __maybe_unused, 1019 const char *s __maybe_unused, 1020 int unset __maybe_unused) 1021 { 1022 struct dirent *script_next, *lang_next, script_dirent, lang_dirent; 1023 char scripts_path[MAXPATHLEN]; 1024 DIR *scripts_dir, *lang_dir; 1025 char script_path[MAXPATHLEN]; 1026 char lang_path[MAXPATHLEN]; 1027 struct script_desc *desc; 1028 char first_half[BUFSIZ]; 1029 char *script_root; 1030 1031 snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path()); 1032 1033 scripts_dir = opendir(scripts_path); 1034 if (!scripts_dir) 1035 return -1; 1036 1037 for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) { 1038 snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path, 1039 lang_dirent.d_name); 1040 lang_dir = opendir(lang_path); 1041 if (!lang_dir) 1042 continue; 1043 1044 for_each_script(lang_path, lang_dir, script_dirent, script_next) { 1045 script_root = get_script_root(&script_dirent, REPORT_SUFFIX); 1046 if (script_root) { 1047 desc = script_desc__findnew(script_root); 1048 snprintf(script_path, MAXPATHLEN, "%s/%s", 1049 lang_path, script_dirent.d_name); 1050 read_script_info(desc, script_path); 1051 free(script_root); 1052 } 1053 } 1054 } 1055 1056 fprintf(stdout, "List of available trace scripts:\n"); 1057 list_for_each_entry(desc, &script_descs, node) { 1058 sprintf(first_half, "%s %s", desc->name, 1059 desc->args ? desc->args : ""); 1060 fprintf(stdout, " %-36s %s\n", first_half, 1061 desc->half_liner ? desc->half_liner : ""); 1062 } 1063 1064 exit(0); 1065 } 1066 1067 /* 1068 * Some scripts specify the required events in their "xxx-record" file, 1069 * this function will check if the events in perf.data match those 1070 * mentioned in the "xxx-record". 1071 * 1072 * Fixme: All existing "xxx-record" are all in good formats "-e event ", 1073 * which is covered well now. And new parsing code should be added to 1074 * cover the future complexing formats like event groups etc. 1075 */ 1076 static int check_ev_match(char *dir_name, char *scriptname, 1077 struct perf_session *session) 1078 { 1079 char filename[MAXPATHLEN], evname[128]; 1080 char line[BUFSIZ], *p; 1081 struct perf_evsel *pos; 1082 int match, len; 1083 FILE *fp; 1084 1085 sprintf(filename, "%s/bin/%s-record", dir_name, scriptname); 1086 1087 fp = fopen(filename, "r"); 1088 if (!fp) 1089 return -1; 1090 1091 while (fgets(line, sizeof(line), fp)) { 1092 p = ltrim(line); 1093 if (*p == '#') 1094 continue; 1095 1096 while (strlen(p)) { 1097 p = strstr(p, "-e"); 1098 if (!p) 1099 break; 1100 1101 p += 2; 1102 p = ltrim(p); 1103 len = strcspn(p, " \t"); 1104 if (!len) 1105 break; 1106 1107 snprintf(evname, len + 1, "%s", p); 1108 1109 match = 0; 1110 list_for_each_entry(pos, 1111 &session->evlist->entries, node) { 1112 if (!strcmp(perf_evsel__name(pos), evname)) { 1113 match = 1; 1114 break; 1115 } 1116 } 1117 1118 if (!match) { 1119 fclose(fp); 1120 return -1; 1121 } 1122 } 1123 } 1124 1125 fclose(fp); 1126 return 0; 1127 } 1128 1129 /* 1130 * Return -1 if none is found, otherwise the actual scripts number. 1131 * 1132 * Currently the only user of this function is the script browser, which 1133 * will list all statically runnable scripts, select one, execute it and 1134 * show the output in a perf browser. 1135 */ 1136 int find_scripts(char **scripts_array, char **scripts_path_array) 1137 { 1138 struct dirent *script_next, *lang_next, script_dirent, lang_dirent; 1139 char scripts_path[MAXPATHLEN], lang_path[MAXPATHLEN]; 1140 DIR *scripts_dir, *lang_dir; 1141 struct perf_session *session; 1142 struct perf_data_file file = { 1143 .path = input_name, 1144 .mode = PERF_DATA_MODE_READ, 1145 }; 1146 char *temp; 1147 int i = 0; 1148 1149 session = perf_session__new(&file, false, NULL); 1150 if (!session) 1151 return -1; 1152 1153 snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path()); 1154 1155 scripts_dir = opendir(scripts_path); 1156 if (!scripts_dir) { 1157 perf_session__delete(session); 1158 return -1; 1159 } 1160 1161 for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) { 1162 snprintf(lang_path, MAXPATHLEN, "%s/%s", scripts_path, 1163 lang_dirent.d_name); 1164 #ifdef NO_LIBPERL 1165 if (strstr(lang_path, "perl")) 1166 continue; 1167 #endif 1168 #ifdef NO_LIBPYTHON 1169 if (strstr(lang_path, "python")) 1170 continue; 1171 #endif 1172 1173 lang_dir = opendir(lang_path); 1174 if (!lang_dir) 1175 continue; 1176 1177 for_each_script(lang_path, lang_dir, script_dirent, script_next) { 1178 /* Skip those real time scripts: xxxtop.p[yl] */ 1179 if (strstr(script_dirent.d_name, "top.")) 1180 continue; 1181 sprintf(scripts_path_array[i], "%s/%s", lang_path, 1182 script_dirent.d_name); 1183 temp = strchr(script_dirent.d_name, '.'); 1184 snprintf(scripts_array[i], 1185 (temp - script_dirent.d_name) + 1, 1186 "%s", script_dirent.d_name); 1187 1188 if (check_ev_match(lang_path, 1189 scripts_array[i], session)) 1190 continue; 1191 1192 i++; 1193 } 1194 closedir(lang_dir); 1195 } 1196 1197 closedir(scripts_dir); 1198 perf_session__delete(session); 1199 return i; 1200 } 1201 1202 static char *get_script_path(const char *script_root, const char *suffix) 1203 { 1204 struct dirent *script_next, *lang_next, script_dirent, lang_dirent; 1205 char scripts_path[MAXPATHLEN]; 1206 char script_path[MAXPATHLEN]; 1207 DIR *scripts_dir, *lang_dir; 1208 char lang_path[MAXPATHLEN]; 1209 char *__script_root; 1210 1211 snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path()); 1212 1213 scripts_dir = opendir(scripts_path); 1214 if (!scripts_dir) 1215 return NULL; 1216 1217 for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) { 1218 snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path, 1219 lang_dirent.d_name); 1220 lang_dir = opendir(lang_path); 1221 if (!lang_dir) 1222 continue; 1223 1224 for_each_script(lang_path, lang_dir, script_dirent, script_next) { 1225 __script_root = get_script_root(&script_dirent, suffix); 1226 if (__script_root && !strcmp(script_root, __script_root)) { 1227 free(__script_root); 1228 closedir(lang_dir); 1229 closedir(scripts_dir); 1230 snprintf(script_path, MAXPATHLEN, "%s/%s", 1231 lang_path, script_dirent.d_name); 1232 return strdup(script_path); 1233 } 1234 free(__script_root); 1235 } 1236 closedir(lang_dir); 1237 } 1238 closedir(scripts_dir); 1239 1240 return NULL; 1241 } 1242 1243 static bool is_top_script(const char *script_path) 1244 { 1245 return ends_with(script_path, "top") == NULL ? false : true; 1246 } 1247 1248 static int has_required_arg(char *script_path) 1249 { 1250 struct script_desc *desc; 1251 int n_args = 0; 1252 char *p; 1253 1254 desc = script_desc__new(NULL); 1255 1256 if (read_script_info(desc, script_path)) 1257 goto out; 1258 1259 if (!desc->args) 1260 goto out; 1261 1262 for (p = desc->args; *p; p++) 1263 if (*p == '<') 1264 n_args++; 1265 out: 1266 script_desc__delete(desc); 1267 1268 return n_args; 1269 } 1270 1271 static int have_cmd(int argc, const char **argv) 1272 { 1273 char **__argv = malloc(sizeof(const char *) * argc); 1274 1275 if (!__argv) { 1276 pr_err("malloc failed\n"); 1277 return -1; 1278 } 1279 1280 memcpy(__argv, argv, sizeof(const char *) * argc); 1281 argc = parse_options(argc, (const char **)__argv, record_options, 1282 NULL, PARSE_OPT_STOP_AT_NON_OPTION); 1283 free(__argv); 1284 1285 system_wide = (argc == 0); 1286 1287 return 0; 1288 } 1289 1290 int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused) 1291 { 1292 bool show_full_info = false; 1293 char *rec_script_path = NULL; 1294 char *rep_script_path = NULL; 1295 struct perf_session *session; 1296 char *script_path = NULL; 1297 const char **__argv; 1298 int i, j, err; 1299 struct perf_script script = { 1300 .tool = { 1301 .sample = process_sample_event, 1302 .mmap = perf_event__process_mmap, 1303 .mmap2 = perf_event__process_mmap2, 1304 .comm = perf_event__process_comm, 1305 .exit = perf_event__process_exit, 1306 .fork = perf_event__process_fork, 1307 .attr = process_attr, 1308 .tracing_data = perf_event__process_tracing_data, 1309 .build_id = perf_event__process_build_id, 1310 .ordered_samples = true, 1311 .ordering_requires_timestamps = true, 1312 }, 1313 }; 1314 const struct option options[] = { 1315 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, 1316 "dump raw trace in ASCII"), 1317 OPT_INCR('v', "verbose", &verbose, 1318 "be more verbose (show symbol address, etc)"), 1319 OPT_BOOLEAN('L', "Latency", &latency_format, 1320 "show latency attributes (irqs/preemption disabled, etc)"), 1321 OPT_CALLBACK_NOOPT('l', "list", NULL, NULL, "list available scripts", 1322 list_available_scripts), 1323 OPT_CALLBACK('s', "script", NULL, "name", 1324 "script file name (lang:script name, script name, or *)", 1325 parse_scriptname), 1326 OPT_STRING('g', "gen-script", &generate_script_lang, "lang", 1327 "generate perf-script.xx script in specified language"), 1328 OPT_STRING('i', "input", &input_name, "file", "input file name"), 1329 OPT_BOOLEAN('d', "debug-mode", &debug_mode, 1330 "do various checks like samples ordering and lost events"), 1331 OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name, 1332 "file", "vmlinux pathname"), 1333 OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name, 1334 "file", "kallsyms pathname"), 1335 OPT_BOOLEAN('G', "hide-call-graph", &no_callchain, 1336 "When printing symbols do not display call chain"), 1337 OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory", 1338 "Look for files with symbols relative to this directory"), 1339 OPT_CALLBACK('f', "fields", NULL, "str", 1340 "comma separated output fields prepend with 'type:'. " 1341 "Valid types: hw,sw,trace,raw. " 1342 "Fields: comm,tid,pid,time,cpu,event,trace,ip,sym,dso," 1343 "addr,symoff", parse_output_fields), 1344 OPT_BOOLEAN('a', "all-cpus", &system_wide, 1345 "system-wide collection from all CPUs"), 1346 OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]", 1347 "only consider these symbols"), 1348 OPT_STRING('C', "cpu", &cpu_list, "cpu", "list of cpus to profile"), 1349 OPT_STRING('c', "comms", &symbol_conf.comm_list_str, "comm[,comm...]", 1350 "only display events for these comms"), 1351 OPT_BOOLEAN('I', "show-info", &show_full_info, 1352 "display extended information from perf.data file"), 1353 OPT_BOOLEAN('\0', "show-kernel-path", &symbol_conf.show_kernel_path, 1354 "Show the path of [kernel.kallsyms]"), 1355 OPT_END() 1356 }; 1357 const char * const script_usage[] = { 1358 "perf script [<options>]", 1359 "perf script [<options>] record <script> [<record-options>] <command>", 1360 "perf script [<options>] report <script> [script-args]", 1361 "perf script [<options>] <script> [<record-options>] <command>", 1362 "perf script [<options>] <top-script> [script-args]", 1363 NULL 1364 }; 1365 struct perf_data_file file = { 1366 .mode = PERF_DATA_MODE_READ, 1367 }; 1368 1369 setup_scripting(); 1370 1371 argc = parse_options(argc, argv, options, script_usage, 1372 PARSE_OPT_STOP_AT_NON_OPTION); 1373 1374 file.path = input_name; 1375 1376 if (argc > 1 && !strncmp(argv[0], "rec", strlen("rec"))) { 1377 rec_script_path = get_script_path(argv[1], RECORD_SUFFIX); 1378 if (!rec_script_path) 1379 return cmd_record(argc, argv, NULL); 1380 } 1381 1382 if (argc > 1 && !strncmp(argv[0], "rep", strlen("rep"))) { 1383 rep_script_path = get_script_path(argv[1], REPORT_SUFFIX); 1384 if (!rep_script_path) { 1385 fprintf(stderr, 1386 "Please specify a valid report script" 1387 "(see 'perf script -l' for listing)\n"); 1388 return -1; 1389 } 1390 } 1391 1392 /* make sure PERF_EXEC_PATH is set for scripts */ 1393 perf_set_argv_exec_path(perf_exec_path()); 1394 1395 if (argc && !script_name && !rec_script_path && !rep_script_path) { 1396 int live_pipe[2]; 1397 int rep_args; 1398 pid_t pid; 1399 1400 rec_script_path = get_script_path(argv[0], RECORD_SUFFIX); 1401 rep_script_path = get_script_path(argv[0], REPORT_SUFFIX); 1402 1403 if (!rec_script_path && !rep_script_path) { 1404 fprintf(stderr, " Couldn't find script %s\n\n See perf" 1405 " script -l for available scripts.\n", argv[0]); 1406 usage_with_options(script_usage, options); 1407 } 1408 1409 if (is_top_script(argv[0])) { 1410 rep_args = argc - 1; 1411 } else { 1412 int rec_args; 1413 1414 rep_args = has_required_arg(rep_script_path); 1415 rec_args = (argc - 1) - rep_args; 1416 if (rec_args < 0) { 1417 fprintf(stderr, " %s script requires options." 1418 "\n\n See perf script -l for available " 1419 "scripts and options.\n", argv[0]); 1420 usage_with_options(script_usage, options); 1421 } 1422 } 1423 1424 if (pipe(live_pipe) < 0) { 1425 perror("failed to create pipe"); 1426 return -1; 1427 } 1428 1429 pid = fork(); 1430 if (pid < 0) { 1431 perror("failed to fork"); 1432 return -1; 1433 } 1434 1435 if (!pid) { 1436 j = 0; 1437 1438 dup2(live_pipe[1], 1); 1439 close(live_pipe[0]); 1440 1441 if (is_top_script(argv[0])) { 1442 system_wide = true; 1443 } else if (!system_wide) { 1444 if (have_cmd(argc - rep_args, &argv[rep_args]) != 0) { 1445 err = -1; 1446 goto out; 1447 } 1448 } 1449 1450 __argv = malloc((argc + 6) * sizeof(const char *)); 1451 if (!__argv) { 1452 pr_err("malloc failed\n"); 1453 err = -ENOMEM; 1454 goto out; 1455 } 1456 1457 __argv[j++] = "/bin/sh"; 1458 __argv[j++] = rec_script_path; 1459 if (system_wide) 1460 __argv[j++] = "-a"; 1461 __argv[j++] = "-q"; 1462 __argv[j++] = "-o"; 1463 __argv[j++] = "-"; 1464 for (i = rep_args + 1; i < argc; i++) 1465 __argv[j++] = argv[i]; 1466 __argv[j++] = NULL; 1467 1468 execvp("/bin/sh", (char **)__argv); 1469 free(__argv); 1470 exit(-1); 1471 } 1472 1473 dup2(live_pipe[0], 0); 1474 close(live_pipe[1]); 1475 1476 __argv = malloc((argc + 4) * sizeof(const char *)); 1477 if (!__argv) { 1478 pr_err("malloc failed\n"); 1479 err = -ENOMEM; 1480 goto out; 1481 } 1482 1483 j = 0; 1484 __argv[j++] = "/bin/sh"; 1485 __argv[j++] = rep_script_path; 1486 for (i = 1; i < rep_args + 1; i++) 1487 __argv[j++] = argv[i]; 1488 __argv[j++] = "-i"; 1489 __argv[j++] = "-"; 1490 __argv[j++] = NULL; 1491 1492 execvp("/bin/sh", (char **)__argv); 1493 free(__argv); 1494 exit(-1); 1495 } 1496 1497 if (rec_script_path) 1498 script_path = rec_script_path; 1499 if (rep_script_path) 1500 script_path = rep_script_path; 1501 1502 if (script_path) { 1503 j = 0; 1504 1505 if (!rec_script_path) 1506 system_wide = false; 1507 else if (!system_wide) { 1508 if (have_cmd(argc - 1, &argv[1]) != 0) { 1509 err = -1; 1510 goto out; 1511 } 1512 } 1513 1514 __argv = malloc((argc + 2) * sizeof(const char *)); 1515 if (!__argv) { 1516 pr_err("malloc failed\n"); 1517 err = -ENOMEM; 1518 goto out; 1519 } 1520 1521 __argv[j++] = "/bin/sh"; 1522 __argv[j++] = script_path; 1523 if (system_wide) 1524 __argv[j++] = "-a"; 1525 for (i = 2; i < argc; i++) 1526 __argv[j++] = argv[i]; 1527 __argv[j++] = NULL; 1528 1529 execvp("/bin/sh", (char **)__argv); 1530 free(__argv); 1531 exit(-1); 1532 } 1533 1534 if (symbol__init() < 0) 1535 return -1; 1536 if (!script_name) 1537 setup_pager(); 1538 1539 session = perf_session__new(&file, false, &script.tool); 1540 if (session == NULL) 1541 return -ENOMEM; 1542 1543 script.session = session; 1544 1545 if (cpu_list) { 1546 if (perf_session__cpu_bitmap(session, cpu_list, cpu_bitmap)) 1547 return -1; 1548 } 1549 1550 if (!script_name && !generate_script_lang) 1551 perf_session__fprintf_info(session, stdout, show_full_info); 1552 1553 if (!no_callchain) 1554 symbol_conf.use_callchain = true; 1555 else 1556 symbol_conf.use_callchain = false; 1557 1558 if (generate_script_lang) { 1559 struct stat perf_stat; 1560 int input; 1561 1562 if (output_set_by_user()) { 1563 fprintf(stderr, 1564 "custom fields not supported for generated scripts"); 1565 return -1; 1566 } 1567 1568 input = open(file.path, O_RDONLY); /* input_name */ 1569 if (input < 0) { 1570 perror("failed to open file"); 1571 return -1; 1572 } 1573 1574 err = fstat(input, &perf_stat); 1575 if (err < 0) { 1576 perror("failed to stat file"); 1577 return -1; 1578 } 1579 1580 if (!perf_stat.st_size) { 1581 fprintf(stderr, "zero-sized file, nothing to do!\n"); 1582 return 0; 1583 } 1584 1585 scripting_ops = script_spec__lookup(generate_script_lang); 1586 if (!scripting_ops) { 1587 fprintf(stderr, "invalid language specifier"); 1588 return -1; 1589 } 1590 1591 err = scripting_ops->generate_script(session->pevent, 1592 "perf-script"); 1593 goto out; 1594 } 1595 1596 if (script_name) { 1597 err = scripting_ops->start_script(script_name, argc, argv); 1598 if (err) 1599 goto out; 1600 pr_debug("perf script started with script %s\n\n", script_name); 1601 } 1602 1603 1604 err = perf_session__check_output_opt(session); 1605 if (err < 0) 1606 goto out; 1607 1608 err = __cmd_script(&script); 1609 1610 perf_session__delete(session); 1611 cleanup_scripting(); 1612 out: 1613 return err; 1614 } 1615