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 20static char const *script_name; 21static char const *generate_script_lang; 22static bool debug_mode; 23static u64 last_timestamp; 24static u64 nr_unordered; 25extern const struct option record_options[]; 26static bool no_callchain; 27static bool latency_format; 28static bool system_wide; 29static const char *cpu_list; 30static DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS); 31 32enum 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 47struct 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 */ 66static 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 116static 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 126static 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 142static 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 171static 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 */ 235static 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 281static 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 328static 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 335static 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 349static 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 390static 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 418static 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 455static 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 462static int default_stop_script(void) 463{ 464 return 0; 465} 466 467static int default_generate_script(struct pevent *pevent __maybe_unused, 468 const char *outfile __maybe_unused) 469{ 470 return 0; 471} 472 473static 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 480static struct scripting_ops *scripting_ops; 481 482static void setup_scripting(void) 483{ 484 setup_perl_scripting(); 485 setup_python_scripting(); 486 487 scripting_ops = &default_scripting_ops; 488} 489 490static int cleanup_scripting(void) 491{ 492 pr_debug("\nperf script stopped\n"); 493 494 return scripting_ops->stop_script(); 495} 496 497static 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 542static 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 556static void sig_handler(int sig __maybe_unused) 557{ 558 session_done = 1; 559} 560 561static int __cmd_script(struct perf_session *session) 562{ 563 int ret; 564 565 signal(SIGINT, sig_handler); 566 567 ret = perf_session__process_events(session, &perf_script); 568 569 if (debug_mode) 570 pr_err("Misordered timestamps: %" PRIu64 "\n", nr_unordered); 571 572 return ret; 573} 574 575struct script_spec { 576 struct list_head node; 577 struct scripting_ops *ops; 578 char spec[0]; 579}; 580 581static LIST_HEAD(script_specs); 582 583static struct script_spec *script_spec__new(const char *spec, 584 struct scripting_ops *ops) 585{ 586 struct script_spec *s = malloc(sizeof(*s) + strlen(spec) + 1); 587 588 if (s != NULL) { 589 strcpy(s->spec, spec); 590 s->ops = ops; 591 } 592 593 return s; 594} 595 596static void script_spec__add(struct script_spec *s) 597{ 598 list_add_tail(&s->node, &script_specs); 599} 600 601static struct script_spec *script_spec__find(const char *spec) 602{ 603 struct script_spec *s; 604 605 list_for_each_entry(s, &script_specs, node) 606 if (strcasecmp(s->spec, spec) == 0) 607 return s; 608 return NULL; 609} 610 611static struct script_spec *script_spec__findnew(const char *spec, 612 struct scripting_ops *ops) 613{ 614 struct script_spec *s = script_spec__find(spec); 615 616 if (s) 617 return s; 618 619 s = script_spec__new(spec, ops); 620 if (!s) 621 return NULL; 622 623 script_spec__add(s); 624 625 return s; 626} 627 628int script_spec_register(const char *spec, struct scripting_ops *ops) 629{ 630 struct script_spec *s; 631 632 s = script_spec__find(spec); 633 if (s) 634 return -1; 635 636 s = script_spec__findnew(spec, ops); 637 if (!s) 638 return -1; 639 640 return 0; 641} 642 643static struct scripting_ops *script_spec__lookup(const char *spec) 644{ 645 struct script_spec *s = script_spec__find(spec); 646 if (!s) 647 return NULL; 648 649 return s->ops; 650} 651 652static void list_available_languages(void) 653{ 654 struct script_spec *s; 655 656 fprintf(stderr, "\n"); 657 fprintf(stderr, "Scripting language extensions (used in " 658 "perf script -s [spec:]script.[spec]):\n\n"); 659 660 list_for_each_entry(s, &script_specs, node) 661 fprintf(stderr, " %-42s [%s]\n", s->spec, s->ops->name); 662 663 fprintf(stderr, "\n"); 664} 665 666static int parse_scriptname(const struct option *opt __maybe_unused, 667 const char *str, int unset __maybe_unused) 668{ 669 char spec[PATH_MAX]; 670 const char *script, *ext; 671 int len; 672 673 if (strcmp(str, "lang") == 0) { 674 list_available_languages(); 675 exit(0); 676 } 677 678 script = strchr(str, ':'); 679 if (script) { 680 len = script - str; 681 if (len >= PATH_MAX) { 682 fprintf(stderr, "invalid language specifier"); 683 return -1; 684 } 685 strncpy(spec, str, len); 686 spec[len] = '\0'; 687 scripting_ops = script_spec__lookup(spec); 688 if (!scripting_ops) { 689 fprintf(stderr, "invalid language specifier"); 690 return -1; 691 } 692 script++; 693 } else { 694 script = str; 695 ext = strrchr(script, '.'); 696 if (!ext) { 697 fprintf(stderr, "invalid script extension"); 698 return -1; 699 } 700 scripting_ops = script_spec__lookup(++ext); 701 if (!scripting_ops) { 702 fprintf(stderr, "invalid script extension"); 703 return -1; 704 } 705 } 706 707 script_name = strdup(script); 708 709 return 0; 710} 711 712static int parse_output_fields(const struct option *opt __maybe_unused, 713 const char *arg, int unset __maybe_unused) 714{ 715 char *tok; 716 int i, imax = ARRAY_SIZE(all_output_options); 717 int j; 718 int rc = 0; 719 char *str = strdup(arg); 720 int type = -1; 721 722 if (!str) 723 return -ENOMEM; 724 725 /* first word can state for which event type the user is specifying 726 * the fields. If no type exists, the specified fields apply to all 727 * event types found in the file minus the invalid fields for a type. 728 */ 729 tok = strchr(str, ':'); 730 if (tok) { 731 *tok = '\0'; 732 tok++; 733 if (!strcmp(str, "hw")) 734 type = PERF_TYPE_HARDWARE; 735 else if (!strcmp(str, "sw")) 736 type = PERF_TYPE_SOFTWARE; 737 else if (!strcmp(str, "trace")) 738 type = PERF_TYPE_TRACEPOINT; 739 else if (!strcmp(str, "raw")) 740 type = PERF_TYPE_RAW; 741 else { 742 fprintf(stderr, "Invalid event type in field string.\n"); 743 rc = -EINVAL; 744 goto out; 745 } 746 747 if (output[type].user_set) 748 pr_warning("Overriding previous field request for %s events.\n", 749 event_type(type)); 750 751 output[type].fields = 0; 752 output[type].user_set = true; 753 output[type].wildcard_set = false; 754 755 } else { 756 tok = str; 757 if (strlen(str) == 0) { 758 fprintf(stderr, 759 "Cannot set fields to 'none' for all event types.\n"); 760 rc = -EINVAL; 761 goto out; 762 } 763 764 if (output_set_by_user()) 765 pr_warning("Overriding previous field request for all events.\n"); 766 767 for (j = 0; j < PERF_TYPE_MAX; ++j) { 768 output[j].fields = 0; 769 output[j].user_set = true; 770 output[j].wildcard_set = true; 771 } 772 } 773 774 tok = strtok(tok, ","); 775 while (tok) { 776 for (i = 0; i < imax; ++i) { 777 if (strcmp(tok, all_output_options[i].str) == 0) 778 break; 779 } 780 if (i == imax) { 781 fprintf(stderr, "Invalid field requested.\n"); 782 rc = -EINVAL; 783 goto out; 784 } 785 786 if (type == -1) { 787 /* add user option to all events types for 788 * which it is valid 789 */ 790 for (j = 0; j < PERF_TYPE_MAX; ++j) { 791 if (output[j].invalid_fields & all_output_options[i].field) { 792 pr_warning("\'%s\' not valid for %s events. Ignoring.\n", 793 all_output_options[i].str, event_type(j)); 794 } else 795 output[j].fields |= all_output_options[i].field; 796 } 797 } else { 798 if (output[type].invalid_fields & all_output_options[i].field) { 799 fprintf(stderr, "\'%s\' not valid for %s events.\n", 800 all_output_options[i].str, event_type(type)); 801 802 rc = -EINVAL; 803 goto out; 804 } 805 output[type].fields |= all_output_options[i].field; 806 } 807 808 tok = strtok(NULL, ","); 809 } 810 811 if (type >= 0) { 812 if (output[type].fields == 0) { 813 pr_debug("No fields requested for %s type. " 814 "Events will not be displayed.\n", event_type(type)); 815 } 816 } 817 818out: 819 free(str); 820 return rc; 821} 822 823/* Helper function for filesystems that return a dent->d_type DT_UNKNOWN */ 824static int is_directory(const char *base_path, const struct dirent *dent) 825{ 826 char path[PATH_MAX]; 827 struct stat st; 828 829 sprintf(path, "%s/%s", base_path, dent->d_name); 830 if (stat(path, &st)) 831 return 0; 832 833 return S_ISDIR(st.st_mode); 834} 835 836#define for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next)\ 837 while (!readdir_r(scripts_dir, &lang_dirent, &lang_next) && \ 838 lang_next) \ 839 if ((lang_dirent.d_type == DT_DIR || \ 840 (lang_dirent.d_type == DT_UNKNOWN && \ 841 is_directory(scripts_path, &lang_dirent))) && \ 842 (strcmp(lang_dirent.d_name, ".")) && \ 843 (strcmp(lang_dirent.d_name, ".."))) 844 845#define for_each_script(lang_path, lang_dir, script_dirent, script_next)\ 846 while (!readdir_r(lang_dir, &script_dirent, &script_next) && \ 847 script_next) \ 848 if (script_dirent.d_type != DT_DIR && \ 849 (script_dirent.d_type != DT_UNKNOWN || \ 850 !is_directory(lang_path, &script_dirent))) 851 852 853#define RECORD_SUFFIX "-record" 854#define REPORT_SUFFIX "-report" 855 856struct script_desc { 857 struct list_head node; 858 char *name; 859 char *half_liner; 860 char *args; 861}; 862 863static LIST_HEAD(script_descs); 864 865static struct script_desc *script_desc__new(const char *name) 866{ 867 struct script_desc *s = zalloc(sizeof(*s)); 868 869 if (s != NULL && name) 870 s->name = strdup(name); 871 872 return s; 873} 874 875static void script_desc__delete(struct script_desc *s) 876{ 877 free(s->name); 878 free(s->half_liner); 879 free(s->args); 880 free(s); 881} 882 883static void script_desc__add(struct script_desc *s) 884{ 885 list_add_tail(&s->node, &script_descs); 886} 887 888static struct script_desc *script_desc__find(const char *name) 889{ 890 struct script_desc *s; 891 892 list_for_each_entry(s, &script_descs, node) 893 if (strcasecmp(s->name, name) == 0) 894 return s; 895 return NULL; 896} 897 898static struct script_desc *script_desc__findnew(const char *name) 899{ 900 struct script_desc *s = script_desc__find(name); 901 902 if (s) 903 return s; 904 905 s = script_desc__new(name); 906 if (!s) 907 goto out_delete_desc; 908 909 script_desc__add(s); 910 911 return s; 912 913out_delete_desc: 914 script_desc__delete(s); 915 916 return NULL; 917} 918 919static const char *ends_with(const char *str, const char *suffix) 920{ 921 size_t suffix_len = strlen(suffix); 922 const char *p = str; 923 924 if (strlen(str) > suffix_len) { 925 p = str + strlen(str) - suffix_len; 926 if (!strncmp(p, suffix, suffix_len)) 927 return p; 928 } 929 930 return NULL; 931} 932 933static int read_script_info(struct script_desc *desc, const char *filename) 934{ 935 char line[BUFSIZ], *p; 936 FILE *fp; 937 938 fp = fopen(filename, "r"); 939 if (!fp) 940 return -1; 941 942 while (fgets(line, sizeof(line), fp)) { 943 p = ltrim(line); 944 if (strlen(p) == 0) 945 continue; 946 if (*p != '#') 947 continue; 948 p++; 949 if (strlen(p) && *p == '!') 950 continue; 951 952 p = ltrim(p); 953 if (strlen(p) && p[strlen(p) - 1] == '\n') 954 p[strlen(p) - 1] = '\0'; 955 956 if (!strncmp(p, "description:", strlen("description:"))) { 957 p += strlen("description:"); 958 desc->half_liner = strdup(ltrim(p)); 959 continue; 960 } 961 962 if (!strncmp(p, "args:", strlen("args:"))) { 963 p += strlen("args:"); 964 desc->args = strdup(ltrim(p)); 965 continue; 966 } 967 } 968 969 fclose(fp); 970 971 return 0; 972} 973 974static char *get_script_root(struct dirent *script_dirent, const char *suffix) 975{ 976 char *script_root, *str; 977 978 script_root = strdup(script_dirent->d_name); 979 if (!script_root) 980 return NULL; 981 982 str = (char *)ends_with(script_root, suffix); 983 if (!str) { 984 free(script_root); 985 return NULL; 986 } 987 988 *str = '\0'; 989 return script_root; 990} 991 992static int list_available_scripts(const struct option *opt __maybe_unused, 993 const char *s __maybe_unused, 994 int unset __maybe_unused) 995{ 996 struct dirent *script_next, *lang_next, script_dirent, lang_dirent; 997 char scripts_path[MAXPATHLEN]; 998 DIR *scripts_dir, *lang_dir; 999 char script_path[MAXPATHLEN]; 1000 char lang_path[MAXPATHLEN]; 1001 struct script_desc *desc; 1002 char first_half[BUFSIZ]; 1003 char *script_root; 1004 1005 snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path()); 1006 1007 scripts_dir = opendir(scripts_path); 1008 if (!scripts_dir) 1009 return -1; 1010 1011 for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) { 1012 snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path, 1013 lang_dirent.d_name); 1014 lang_dir = opendir(lang_path); 1015 if (!lang_dir) 1016 continue; 1017 1018 for_each_script(lang_path, lang_dir, script_dirent, script_next) { 1019 script_root = get_script_root(&script_dirent, REPORT_SUFFIX); 1020 if (script_root) { 1021 desc = script_desc__findnew(script_root); 1022 snprintf(script_path, MAXPATHLEN, "%s/%s", 1023 lang_path, script_dirent.d_name); 1024 read_script_info(desc, script_path); 1025 free(script_root); 1026 } 1027 } 1028 } 1029 1030 fprintf(stdout, "List of available trace scripts:\n"); 1031 list_for_each_entry(desc, &script_descs, node) { 1032 sprintf(first_half, "%s %s", desc->name, 1033 desc->args ? desc->args : ""); 1034 fprintf(stdout, " %-36s %s\n", first_half, 1035 desc->half_liner ? desc->half_liner : ""); 1036 } 1037 1038 exit(0); 1039} 1040 1041/* 1042 * Some scripts specify the required events in their "xxx-record" file, 1043 * this function will check if the events in perf.data match those 1044 * mentioned in the "xxx-record". 1045 * 1046 * Fixme: All existing "xxx-record" are all in good formats "-e event ", 1047 * which is covered well now. And new parsing code should be added to 1048 * cover the future complexing formats like event groups etc. 1049 */ 1050static int check_ev_match(char *dir_name, char *scriptname, 1051 struct perf_session *session) 1052{ 1053 char filename[MAXPATHLEN], evname[128]; 1054 char line[BUFSIZ], *p; 1055 struct perf_evsel *pos; 1056 int match, len; 1057 FILE *fp; 1058 1059 sprintf(filename, "%s/bin/%s-record", dir_name, scriptname); 1060 1061 fp = fopen(filename, "r"); 1062 if (!fp) 1063 return -1; 1064 1065 while (fgets(line, sizeof(line), fp)) { 1066 p = ltrim(line); 1067 if (*p == '#') 1068 continue; 1069 1070 while (strlen(p)) { 1071 p = strstr(p, "-e"); 1072 if (!p) 1073 break; 1074 1075 p += 2; 1076 p = ltrim(p); 1077 len = strcspn(p, " \t"); 1078 if (!len) 1079 break; 1080 1081 snprintf(evname, len + 1, "%s", p); 1082 1083 match = 0; 1084 list_for_each_entry(pos, 1085 &session->evlist->entries, node) { 1086 if (!strcmp(perf_evsel__name(pos), evname)) { 1087 match = 1; 1088 break; 1089 } 1090 } 1091 1092 if (!match) { 1093 fclose(fp); 1094 return -1; 1095 } 1096 } 1097 } 1098 1099 fclose(fp); 1100 return 0; 1101} 1102 1103/* 1104 * Return -1 if none is found, otherwise the actual scripts number. 1105 * 1106 * Currently the only user of this function is the script browser, which 1107 * will list all statically runnable scripts, select one, execute it and 1108 * show the output in a perf browser. 1109 */ 1110int find_scripts(char **scripts_array, char **scripts_path_array) 1111{ 1112 struct dirent *script_next, *lang_next, script_dirent, lang_dirent; 1113 char scripts_path[MAXPATHLEN], lang_path[MAXPATHLEN]; 1114 DIR *scripts_dir, *lang_dir; 1115 struct perf_session *session; 1116 char *temp; 1117 int i = 0; 1118 1119 session = perf_session__new(input_name, O_RDONLY, 0, false, NULL); 1120 if (!session) 1121 return -1; 1122 1123 snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path()); 1124 1125 scripts_dir = opendir(scripts_path); 1126 if (!scripts_dir) { 1127 perf_session__delete(session); 1128 return -1; 1129 } 1130 1131 for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) { 1132 snprintf(lang_path, MAXPATHLEN, "%s/%s", scripts_path, 1133 lang_dirent.d_name); 1134#ifdef NO_LIBPERL 1135 if (strstr(lang_path, "perl")) 1136 continue; 1137#endif 1138#ifdef NO_LIBPYTHON 1139 if (strstr(lang_path, "python")) 1140 continue; 1141#endif 1142 1143 lang_dir = opendir(lang_path); 1144 if (!lang_dir) 1145 continue; 1146 1147 for_each_script(lang_path, lang_dir, script_dirent, script_next) { 1148 /* Skip those real time scripts: xxxtop.p[yl] */ 1149 if (strstr(script_dirent.d_name, "top.")) 1150 continue; 1151 sprintf(scripts_path_array[i], "%s/%s", lang_path, 1152 script_dirent.d_name); 1153 temp = strchr(script_dirent.d_name, '.'); 1154 snprintf(scripts_array[i], 1155 (temp - script_dirent.d_name) + 1, 1156 "%s", script_dirent.d_name); 1157 1158 if (check_ev_match(lang_path, 1159 scripts_array[i], session)) 1160 continue; 1161 1162 i++; 1163 } 1164 closedir(lang_dir); 1165 } 1166 1167 closedir(scripts_dir); 1168 perf_session__delete(session); 1169 return i; 1170} 1171 1172static char *get_script_path(const char *script_root, const char *suffix) 1173{ 1174 struct dirent *script_next, *lang_next, script_dirent, lang_dirent; 1175 char scripts_path[MAXPATHLEN]; 1176 char script_path[MAXPATHLEN]; 1177 DIR *scripts_dir, *lang_dir; 1178 char lang_path[MAXPATHLEN]; 1179 char *__script_root; 1180 1181 snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path()); 1182 1183 scripts_dir = opendir(scripts_path); 1184 if (!scripts_dir) 1185 return NULL; 1186 1187 for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) { 1188 snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path, 1189 lang_dirent.d_name); 1190 lang_dir = opendir(lang_path); 1191 if (!lang_dir) 1192 continue; 1193 1194 for_each_script(lang_path, lang_dir, script_dirent, script_next) { 1195 __script_root = get_script_root(&script_dirent, suffix); 1196 if (__script_root && !strcmp(script_root, __script_root)) { 1197 free(__script_root); 1198 closedir(lang_dir); 1199 closedir(scripts_dir); 1200 snprintf(script_path, MAXPATHLEN, "%s/%s", 1201 lang_path, script_dirent.d_name); 1202 return strdup(script_path); 1203 } 1204 free(__script_root); 1205 } 1206 closedir(lang_dir); 1207 } 1208 closedir(scripts_dir); 1209 1210 return NULL; 1211} 1212 1213static bool is_top_script(const char *script_path) 1214{ 1215 return ends_with(script_path, "top") == NULL ? false : true; 1216} 1217 1218static int has_required_arg(char *script_path) 1219{ 1220 struct script_desc *desc; 1221 int n_args = 0; 1222 char *p; 1223 1224 desc = script_desc__new(NULL); 1225 1226 if (read_script_info(desc, script_path)) 1227 goto out; 1228 1229 if (!desc->args) 1230 goto out; 1231 1232 for (p = desc->args; *p; p++) 1233 if (*p == '<') 1234 n_args++; 1235out: 1236 script_desc__delete(desc); 1237 1238 return n_args; 1239} 1240 1241static int have_cmd(int argc, const char **argv) 1242{ 1243 char **__argv = malloc(sizeof(const char *) * argc); 1244 1245 if (!__argv) { 1246 pr_err("malloc failed\n"); 1247 return -1; 1248 } 1249 1250 memcpy(__argv, argv, sizeof(const char *) * argc); 1251 argc = parse_options(argc, (const char **)__argv, record_options, 1252 NULL, PARSE_OPT_STOP_AT_NON_OPTION); 1253 free(__argv); 1254 1255 system_wide = (argc == 0); 1256 1257 return 0; 1258} 1259 1260int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused) 1261{ 1262 bool show_full_info = false; 1263 char *rec_script_path = NULL; 1264 char *rep_script_path = NULL; 1265 struct perf_session *session; 1266 char *script_path = NULL; 1267 const char **__argv; 1268 int i, j, err; 1269 const struct option options[] = { 1270 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, 1271 "dump raw trace in ASCII"), 1272 OPT_INCR('v', "verbose", &verbose, 1273 "be more verbose (show symbol address, etc)"), 1274 OPT_BOOLEAN('L', "Latency", &latency_format, 1275 "show latency attributes (irqs/preemption disabled, etc)"), 1276 OPT_CALLBACK_NOOPT('l', "list", NULL, NULL, "list available scripts", 1277 list_available_scripts), 1278 OPT_CALLBACK('s', "script", NULL, "name", 1279 "script file name (lang:script name, script name, or *)", 1280 parse_scriptname), 1281 OPT_STRING('g', "gen-script", &generate_script_lang, "lang", 1282 "generate perf-script.xx script in specified language"), 1283 OPT_STRING('i', "input", &input_name, "file", "input file name"), 1284 OPT_BOOLEAN('d', "debug-mode", &debug_mode, 1285 "do various checks like samples ordering and lost events"), 1286 OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name, 1287 "file", "vmlinux pathname"), 1288 OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name, 1289 "file", "kallsyms pathname"), 1290 OPT_BOOLEAN('G', "hide-call-graph", &no_callchain, 1291 "When printing symbols do not display call chain"), 1292 OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory", 1293 "Look for files with symbols relative to this directory"), 1294 OPT_CALLBACK('f', "fields", NULL, "str", 1295 "comma separated output fields prepend with 'type:'. " 1296 "Valid types: hw,sw,trace,raw. " 1297 "Fields: comm,tid,pid,time,cpu,event,trace,ip,sym,dso," 1298 "addr,symoff", parse_output_fields), 1299 OPT_BOOLEAN('a', "all-cpus", &system_wide, 1300 "system-wide collection from all CPUs"), 1301 OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]", 1302 "only consider these symbols"), 1303 OPT_STRING('C', "cpu", &cpu_list, "cpu", "list of cpus to profile"), 1304 OPT_STRING('c', "comms", &symbol_conf.comm_list_str, "comm[,comm...]", 1305 "only display events for these comms"), 1306 OPT_BOOLEAN('I', "show-info", &show_full_info, 1307 "display extended information from perf.data file"), 1308 OPT_BOOLEAN('\0', "show-kernel-path", &symbol_conf.show_kernel_path, 1309 "Show the path of [kernel.kallsyms]"), 1310 OPT_END() 1311 }; 1312 const char * const script_usage[] = { 1313 "perf script [<options>]", 1314 "perf script [<options>] record <script> [<record-options>] <command>", 1315 "perf script [<options>] report <script> [script-args]", 1316 "perf script [<options>] <script> [<record-options>] <command>", 1317 "perf script [<options>] <top-script> [script-args]", 1318 NULL 1319 }; 1320 1321 setup_scripting(); 1322 1323 argc = parse_options(argc, argv, options, script_usage, 1324 PARSE_OPT_STOP_AT_NON_OPTION); 1325 1326 if (argc > 1 && !strncmp(argv[0], "rec", strlen("rec"))) { 1327 rec_script_path = get_script_path(argv[1], RECORD_SUFFIX); 1328 if (!rec_script_path) 1329 return cmd_record(argc, argv, NULL); 1330 } 1331 1332 if (argc > 1 && !strncmp(argv[0], "rep", strlen("rep"))) { 1333 rep_script_path = get_script_path(argv[1], REPORT_SUFFIX); 1334 if (!rep_script_path) { 1335 fprintf(stderr, 1336 "Please specify a valid report script" 1337 "(see 'perf script -l' for listing)\n"); 1338 return -1; 1339 } 1340 } 1341 1342 /* make sure PERF_EXEC_PATH is set for scripts */ 1343 perf_set_argv_exec_path(perf_exec_path()); 1344 1345 if (argc && !script_name && !rec_script_path && !rep_script_path) { 1346 int live_pipe[2]; 1347 int rep_args; 1348 pid_t pid; 1349 1350 rec_script_path = get_script_path(argv[0], RECORD_SUFFIX); 1351 rep_script_path = get_script_path(argv[0], REPORT_SUFFIX); 1352 1353 if (!rec_script_path && !rep_script_path) { 1354 fprintf(stderr, " Couldn't find script %s\n\n See perf" 1355 " script -l for available scripts.\n", argv[0]); 1356 usage_with_options(script_usage, options); 1357 } 1358 1359 if (is_top_script(argv[0])) { 1360 rep_args = argc - 1; 1361 } else { 1362 int rec_args; 1363 1364 rep_args = has_required_arg(rep_script_path); 1365 rec_args = (argc - 1) - rep_args; 1366 if (rec_args < 0) { 1367 fprintf(stderr, " %s script requires options." 1368 "\n\n See perf script -l for available " 1369 "scripts and options.\n", argv[0]); 1370 usage_with_options(script_usage, options); 1371 } 1372 } 1373 1374 if (pipe(live_pipe) < 0) { 1375 perror("failed to create pipe"); 1376 return -1; 1377 } 1378 1379 pid = fork(); 1380 if (pid < 0) { 1381 perror("failed to fork"); 1382 return -1; 1383 } 1384 1385 if (!pid) { 1386 j = 0; 1387 1388 dup2(live_pipe[1], 1); 1389 close(live_pipe[0]); 1390 1391 if (is_top_script(argv[0])) { 1392 system_wide = true; 1393 } else if (!system_wide) { 1394 if (have_cmd(argc - rep_args, &argv[rep_args]) != 0) { 1395 err = -1; 1396 goto out; 1397 } 1398 } 1399 1400 __argv = malloc((argc + 6) * sizeof(const char *)); 1401 if (!__argv) { 1402 pr_err("malloc failed\n"); 1403 err = -ENOMEM; 1404 goto out; 1405 } 1406 1407 __argv[j++] = "/bin/sh"; 1408 __argv[j++] = rec_script_path; 1409 if (system_wide) 1410 __argv[j++] = "-a"; 1411 __argv[j++] = "-q"; 1412 __argv[j++] = "-o"; 1413 __argv[j++] = "-"; 1414 for (i = rep_args + 1; i < argc; i++) 1415 __argv[j++] = argv[i]; 1416 __argv[j++] = NULL; 1417 1418 execvp("/bin/sh", (char **)__argv); 1419 free(__argv); 1420 exit(-1); 1421 } 1422 1423 dup2(live_pipe[0], 0); 1424 close(live_pipe[1]); 1425 1426 __argv = malloc((argc + 4) * sizeof(const char *)); 1427 if (!__argv) { 1428 pr_err("malloc failed\n"); 1429 err = -ENOMEM; 1430 goto out; 1431 } 1432 1433 j = 0; 1434 __argv[j++] = "/bin/sh"; 1435 __argv[j++] = rep_script_path; 1436 for (i = 1; i < rep_args + 1; i++) 1437 __argv[j++] = argv[i]; 1438 __argv[j++] = "-i"; 1439 __argv[j++] = "-"; 1440 __argv[j++] = NULL; 1441 1442 execvp("/bin/sh", (char **)__argv); 1443 free(__argv); 1444 exit(-1); 1445 } 1446 1447 if (rec_script_path) 1448 script_path = rec_script_path; 1449 if (rep_script_path) 1450 script_path = rep_script_path; 1451 1452 if (script_path) { 1453 j = 0; 1454 1455 if (!rec_script_path) 1456 system_wide = false; 1457 else if (!system_wide) { 1458 if (have_cmd(argc - 1, &argv[1]) != 0) { 1459 err = -1; 1460 goto out; 1461 } 1462 } 1463 1464 __argv = malloc((argc + 2) * sizeof(const char *)); 1465 if (!__argv) { 1466 pr_err("malloc failed\n"); 1467 err = -ENOMEM; 1468 goto out; 1469 } 1470 1471 __argv[j++] = "/bin/sh"; 1472 __argv[j++] = script_path; 1473 if (system_wide) 1474 __argv[j++] = "-a"; 1475 for (i = 2; i < argc; i++) 1476 __argv[j++] = argv[i]; 1477 __argv[j++] = NULL; 1478 1479 execvp("/bin/sh", (char **)__argv); 1480 free(__argv); 1481 exit(-1); 1482 } 1483 1484 if (symbol__init() < 0) 1485 return -1; 1486 if (!script_name) 1487 setup_pager(); 1488 1489 session = perf_session__new(input_name, O_RDONLY, 0, false, 1490 &perf_script); 1491 if (session == NULL) 1492 return -ENOMEM; 1493 1494 if (cpu_list) { 1495 if (perf_session__cpu_bitmap(session, cpu_list, cpu_bitmap)) 1496 return -1; 1497 } 1498 1499 if (!script_name && !generate_script_lang) 1500 perf_session__fprintf_info(session, stdout, show_full_info); 1501 1502 if (!no_callchain) 1503 symbol_conf.use_callchain = true; 1504 else 1505 symbol_conf.use_callchain = false; 1506 1507 if (generate_script_lang) { 1508 struct stat perf_stat; 1509 int input; 1510 1511 if (output_set_by_user()) { 1512 fprintf(stderr, 1513 "custom fields not supported for generated scripts"); 1514 return -1; 1515 } 1516 1517 input = open(session->filename, O_RDONLY); /* input_name */ 1518 if (input < 0) { 1519 perror("failed to open file"); 1520 return -1; 1521 } 1522 1523 err = fstat(input, &perf_stat); 1524 if (err < 0) { 1525 perror("failed to stat file"); 1526 return -1; 1527 } 1528 1529 if (!perf_stat.st_size) { 1530 fprintf(stderr, "zero-sized file, nothing to do!\n"); 1531 return 0; 1532 } 1533 1534 scripting_ops = script_spec__lookup(generate_script_lang); 1535 if (!scripting_ops) { 1536 fprintf(stderr, "invalid language specifier"); 1537 return -1; 1538 } 1539 1540 err = scripting_ops->generate_script(session->pevent, 1541 "perf-script"); 1542 goto out; 1543 } 1544 1545 if (script_name) { 1546 err = scripting_ops->start_script(script_name, argc, argv); 1547 if (err) 1548 goto out; 1549 pr_debug("perf script started with script %s\n\n", script_name); 1550 } 1551 1552 1553 err = perf_session__check_output_opt(session); 1554 if (err < 0) 1555 goto out; 1556 1557 err = __cmd_script(session); 1558 1559 perf_session__delete(session); 1560 cleanup_scripting(); 1561out: 1562 return err; 1563} 1564