1 #include "builtin.h" 2 3 #include "perf.h" 4 #include "util/cache.h" 5 #include "util/debug.h" 6 #include <subcmd/exec-cmd.h> 7 #include "util/header.h" 8 #include <subcmd/parse-options.h> 9 #include "util/perf_regs.h" 10 #include "util/session.h" 11 #include "util/tool.h" 12 #include "util/symbol.h" 13 #include "util/thread.h" 14 #include "util/trace-event.h" 15 #include "util/util.h" 16 #include "util/evlist.h" 17 #include "util/evsel.h" 18 #include "util/sort.h" 19 #include "util/data.h" 20 #include "util/auxtrace.h" 21 #include "util/cpumap.h" 22 #include "util/thread_map.h" 23 #include "util/stat.h" 24 #include <linux/bitmap.h> 25 #include <linux/stringify.h> 26 #include "asm/bug.h" 27 #include "util/mem-events.h" 28 29 static char const *script_name; 30 static char const *generate_script_lang; 31 static bool debug_mode; 32 static u64 last_timestamp; 33 static u64 nr_unordered; 34 static bool no_callchain; 35 static bool latency_format; 36 static bool system_wide; 37 static bool print_flags; 38 static bool nanosecs; 39 static const char *cpu_list; 40 static DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS); 41 static struct perf_stat_config stat_config; 42 43 unsigned int scripting_max_stack = PERF_MAX_STACK_DEPTH; 44 45 enum perf_output_field { 46 PERF_OUTPUT_COMM = 1U << 0, 47 PERF_OUTPUT_TID = 1U << 1, 48 PERF_OUTPUT_PID = 1U << 2, 49 PERF_OUTPUT_TIME = 1U << 3, 50 PERF_OUTPUT_CPU = 1U << 4, 51 PERF_OUTPUT_EVNAME = 1U << 5, 52 PERF_OUTPUT_TRACE = 1U << 6, 53 PERF_OUTPUT_IP = 1U << 7, 54 PERF_OUTPUT_SYM = 1U << 8, 55 PERF_OUTPUT_DSO = 1U << 9, 56 PERF_OUTPUT_ADDR = 1U << 10, 57 PERF_OUTPUT_SYMOFFSET = 1U << 11, 58 PERF_OUTPUT_SRCLINE = 1U << 12, 59 PERF_OUTPUT_PERIOD = 1U << 13, 60 PERF_OUTPUT_IREGS = 1U << 14, 61 PERF_OUTPUT_BRSTACK = 1U << 15, 62 PERF_OUTPUT_BRSTACKSYM = 1U << 16, 63 PERF_OUTPUT_DATA_SRC = 1U << 17, 64 PERF_OUTPUT_WEIGHT = 1U << 18, 65 PERF_OUTPUT_BPF_OUTPUT = 1U << 19, 66 }; 67 68 struct output_option { 69 const char *str; 70 enum perf_output_field field; 71 } all_output_options[] = { 72 {.str = "comm", .field = PERF_OUTPUT_COMM}, 73 {.str = "tid", .field = PERF_OUTPUT_TID}, 74 {.str = "pid", .field = PERF_OUTPUT_PID}, 75 {.str = "time", .field = PERF_OUTPUT_TIME}, 76 {.str = "cpu", .field = PERF_OUTPUT_CPU}, 77 {.str = "event", .field = PERF_OUTPUT_EVNAME}, 78 {.str = "trace", .field = PERF_OUTPUT_TRACE}, 79 {.str = "ip", .field = PERF_OUTPUT_IP}, 80 {.str = "sym", .field = PERF_OUTPUT_SYM}, 81 {.str = "dso", .field = PERF_OUTPUT_DSO}, 82 {.str = "addr", .field = PERF_OUTPUT_ADDR}, 83 {.str = "symoff", .field = PERF_OUTPUT_SYMOFFSET}, 84 {.str = "srcline", .field = PERF_OUTPUT_SRCLINE}, 85 {.str = "period", .field = PERF_OUTPUT_PERIOD}, 86 {.str = "iregs", .field = PERF_OUTPUT_IREGS}, 87 {.str = "brstack", .field = PERF_OUTPUT_BRSTACK}, 88 {.str = "brstacksym", .field = PERF_OUTPUT_BRSTACKSYM}, 89 {.str = "data_src", .field = PERF_OUTPUT_DATA_SRC}, 90 {.str = "weight", .field = PERF_OUTPUT_WEIGHT}, 91 {.str = "bpf-output", .field = PERF_OUTPUT_BPF_OUTPUT}, 92 }; 93 94 /* default set to maintain compatibility with current format */ 95 static struct { 96 bool user_set; 97 bool wildcard_set; 98 unsigned int print_ip_opts; 99 u64 fields; 100 u64 invalid_fields; 101 } output[PERF_TYPE_MAX] = { 102 103 [PERF_TYPE_HARDWARE] = { 104 .user_set = false, 105 106 .fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID | 107 PERF_OUTPUT_CPU | PERF_OUTPUT_TIME | 108 PERF_OUTPUT_EVNAME | PERF_OUTPUT_IP | 109 PERF_OUTPUT_SYM | PERF_OUTPUT_DSO | 110 PERF_OUTPUT_PERIOD, 111 112 .invalid_fields = PERF_OUTPUT_TRACE | PERF_OUTPUT_BPF_OUTPUT, 113 }, 114 115 [PERF_TYPE_SOFTWARE] = { 116 .user_set = false, 117 118 .fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID | 119 PERF_OUTPUT_CPU | PERF_OUTPUT_TIME | 120 PERF_OUTPUT_EVNAME | PERF_OUTPUT_IP | 121 PERF_OUTPUT_SYM | PERF_OUTPUT_DSO | 122 PERF_OUTPUT_PERIOD | PERF_OUTPUT_BPF_OUTPUT, 123 124 .invalid_fields = PERF_OUTPUT_TRACE, 125 }, 126 127 [PERF_TYPE_TRACEPOINT] = { 128 .user_set = false, 129 130 .fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID | 131 PERF_OUTPUT_CPU | PERF_OUTPUT_TIME | 132 PERF_OUTPUT_EVNAME | PERF_OUTPUT_TRACE 133 }, 134 135 [PERF_TYPE_RAW] = { 136 .user_set = false, 137 138 .fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID | 139 PERF_OUTPUT_CPU | PERF_OUTPUT_TIME | 140 PERF_OUTPUT_EVNAME | PERF_OUTPUT_IP | 141 PERF_OUTPUT_SYM | PERF_OUTPUT_DSO | 142 PERF_OUTPUT_PERIOD | PERF_OUTPUT_ADDR | 143 PERF_OUTPUT_DATA_SRC | PERF_OUTPUT_WEIGHT, 144 145 .invalid_fields = PERF_OUTPUT_TRACE | PERF_OUTPUT_BPF_OUTPUT, 146 }, 147 148 [PERF_TYPE_BREAKPOINT] = { 149 .user_set = false, 150 151 .fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID | 152 PERF_OUTPUT_CPU | PERF_OUTPUT_TIME | 153 PERF_OUTPUT_EVNAME | PERF_OUTPUT_IP | 154 PERF_OUTPUT_SYM | PERF_OUTPUT_DSO | 155 PERF_OUTPUT_PERIOD, 156 157 .invalid_fields = PERF_OUTPUT_TRACE | PERF_OUTPUT_BPF_OUTPUT, 158 }, 159 }; 160 161 static bool output_set_by_user(void) 162 { 163 int j; 164 for (j = 0; j < PERF_TYPE_MAX; ++j) { 165 if (output[j].user_set) 166 return true; 167 } 168 return false; 169 } 170 171 static const char *output_field2str(enum perf_output_field field) 172 { 173 int i, imax = ARRAY_SIZE(all_output_options); 174 const char *str = ""; 175 176 for (i = 0; i < imax; ++i) { 177 if (all_output_options[i].field == field) { 178 str = all_output_options[i].str; 179 break; 180 } 181 } 182 return str; 183 } 184 185 #define PRINT_FIELD(x) (output[attr->type].fields & PERF_OUTPUT_##x) 186 187 static int perf_evsel__do_check_stype(struct perf_evsel *evsel, 188 u64 sample_type, const char *sample_msg, 189 enum perf_output_field field, 190 bool allow_user_set) 191 { 192 struct perf_event_attr *attr = &evsel->attr; 193 int type = attr->type; 194 const char *evname; 195 196 if (attr->sample_type & sample_type) 197 return 0; 198 199 if (output[type].user_set) { 200 if (allow_user_set) 201 return 0; 202 evname = perf_evsel__name(evsel); 203 pr_err("Samples for '%s' event do not have %s attribute set. " 204 "Cannot print '%s' field.\n", 205 evname, sample_msg, output_field2str(field)); 206 return -1; 207 } 208 209 /* user did not ask for it explicitly so remove from the default list */ 210 output[type].fields &= ~field; 211 evname = perf_evsel__name(evsel); 212 pr_debug("Samples for '%s' event do not have %s attribute set. " 213 "Skipping '%s' field.\n", 214 evname, sample_msg, output_field2str(field)); 215 216 return 0; 217 } 218 219 static int perf_evsel__check_stype(struct perf_evsel *evsel, 220 u64 sample_type, const char *sample_msg, 221 enum perf_output_field field) 222 { 223 return perf_evsel__do_check_stype(evsel, sample_type, sample_msg, field, 224 false); 225 } 226 227 static int perf_evsel__check_attr(struct perf_evsel *evsel, 228 struct perf_session *session) 229 { 230 struct perf_event_attr *attr = &evsel->attr; 231 bool allow_user_set; 232 233 if (perf_header__has_feat(&session->header, HEADER_STAT)) 234 return 0; 235 236 allow_user_set = perf_header__has_feat(&session->header, 237 HEADER_AUXTRACE); 238 239 if (PRINT_FIELD(TRACE) && 240 !perf_session__has_traces(session, "record -R")) 241 return -EINVAL; 242 243 if (PRINT_FIELD(IP)) { 244 if (perf_evsel__check_stype(evsel, PERF_SAMPLE_IP, "IP", 245 PERF_OUTPUT_IP)) 246 return -EINVAL; 247 } 248 249 if (PRINT_FIELD(ADDR) && 250 perf_evsel__do_check_stype(evsel, PERF_SAMPLE_ADDR, "ADDR", 251 PERF_OUTPUT_ADDR, allow_user_set)) 252 return -EINVAL; 253 254 if (PRINT_FIELD(DATA_SRC) && 255 perf_evsel__check_stype(evsel, PERF_SAMPLE_DATA_SRC, "DATA_SRC", 256 PERF_OUTPUT_DATA_SRC)) 257 return -EINVAL; 258 259 if (PRINT_FIELD(WEIGHT) && 260 perf_evsel__check_stype(evsel, PERF_SAMPLE_WEIGHT, "WEIGHT", 261 PERF_OUTPUT_WEIGHT)) 262 return -EINVAL; 263 264 if (PRINT_FIELD(SYM) && !PRINT_FIELD(IP) && !PRINT_FIELD(ADDR)) { 265 pr_err("Display of symbols requested but neither sample IP nor " 266 "sample address\nis selected. Hence, no addresses to convert " 267 "to symbols.\n"); 268 return -EINVAL; 269 } 270 if (PRINT_FIELD(SYMOFFSET) && !PRINT_FIELD(SYM)) { 271 pr_err("Display of offsets requested but symbol is not" 272 "selected.\n"); 273 return -EINVAL; 274 } 275 if (PRINT_FIELD(DSO) && !PRINT_FIELD(IP) && !PRINT_FIELD(ADDR)) { 276 pr_err("Display of DSO requested but neither sample IP nor " 277 "sample address\nis selected. Hence, no addresses to convert " 278 "to DSO.\n"); 279 return -EINVAL; 280 } 281 if (PRINT_FIELD(SRCLINE) && !PRINT_FIELD(IP)) { 282 pr_err("Display of source line number requested but sample IP is not\n" 283 "selected. Hence, no address to lookup the source line number.\n"); 284 return -EINVAL; 285 } 286 287 if ((PRINT_FIELD(PID) || PRINT_FIELD(TID)) && 288 perf_evsel__check_stype(evsel, PERF_SAMPLE_TID, "TID", 289 PERF_OUTPUT_TID|PERF_OUTPUT_PID)) 290 return -EINVAL; 291 292 if (PRINT_FIELD(TIME) && 293 perf_evsel__check_stype(evsel, PERF_SAMPLE_TIME, "TIME", 294 PERF_OUTPUT_TIME)) 295 return -EINVAL; 296 297 if (PRINT_FIELD(CPU) && 298 perf_evsel__do_check_stype(evsel, PERF_SAMPLE_CPU, "CPU", 299 PERF_OUTPUT_CPU, allow_user_set)) 300 return -EINVAL; 301 302 if (PRINT_FIELD(PERIOD) && 303 perf_evsel__check_stype(evsel, PERF_SAMPLE_PERIOD, "PERIOD", 304 PERF_OUTPUT_PERIOD)) 305 return -EINVAL; 306 307 if (PRINT_FIELD(IREGS) && 308 perf_evsel__check_stype(evsel, PERF_SAMPLE_REGS_INTR, "IREGS", 309 PERF_OUTPUT_IREGS)) 310 return -EINVAL; 311 312 return 0; 313 } 314 315 static void set_print_ip_opts(struct perf_event_attr *attr) 316 { 317 unsigned int type = attr->type; 318 319 output[type].print_ip_opts = 0; 320 if (PRINT_FIELD(IP)) 321 output[type].print_ip_opts |= EVSEL__PRINT_IP; 322 323 if (PRINT_FIELD(SYM)) 324 output[type].print_ip_opts |= EVSEL__PRINT_SYM; 325 326 if (PRINT_FIELD(DSO)) 327 output[type].print_ip_opts |= EVSEL__PRINT_DSO; 328 329 if (PRINT_FIELD(SYMOFFSET)) 330 output[type].print_ip_opts |= EVSEL__PRINT_SYMOFFSET; 331 332 if (PRINT_FIELD(SRCLINE)) 333 output[type].print_ip_opts |= EVSEL__PRINT_SRCLINE; 334 } 335 336 /* 337 * verify all user requested events exist and the samples 338 * have the expected data 339 */ 340 static int perf_session__check_output_opt(struct perf_session *session) 341 { 342 unsigned int j; 343 struct perf_evsel *evsel; 344 345 for (j = 0; j < PERF_TYPE_MAX; ++j) { 346 evsel = perf_session__find_first_evtype(session, j); 347 348 /* 349 * even if fields is set to 0 (ie., show nothing) event must 350 * exist if user explicitly includes it on the command line 351 */ 352 if (!evsel && output[j].user_set && !output[j].wildcard_set) { 353 pr_err("%s events do not exist. " 354 "Remove corresponding -f option to proceed.\n", 355 event_type(j)); 356 return -1; 357 } 358 359 if (evsel && output[j].fields && 360 perf_evsel__check_attr(evsel, session)) 361 return -1; 362 363 if (evsel == NULL) 364 continue; 365 366 set_print_ip_opts(&evsel->attr); 367 } 368 369 if (!no_callchain) { 370 bool use_callchain = false; 371 372 evlist__for_each(session->evlist, evsel) { 373 if (evsel->attr.sample_type & PERF_SAMPLE_CALLCHAIN) { 374 use_callchain = true; 375 break; 376 } 377 } 378 if (!use_callchain) 379 symbol_conf.use_callchain = false; 380 } 381 382 /* 383 * set default for tracepoints to print symbols only 384 * if callchains are present 385 */ 386 if (symbol_conf.use_callchain && 387 !output[PERF_TYPE_TRACEPOINT].user_set) { 388 struct perf_event_attr *attr; 389 390 j = PERF_TYPE_TRACEPOINT; 391 392 evlist__for_each(session->evlist, evsel) { 393 if (evsel->attr.type != j) 394 continue; 395 396 attr = &evsel->attr; 397 398 if (attr->sample_type & PERF_SAMPLE_CALLCHAIN) { 399 output[j].fields |= PERF_OUTPUT_IP; 400 output[j].fields |= PERF_OUTPUT_SYM; 401 output[j].fields |= PERF_OUTPUT_DSO; 402 set_print_ip_opts(attr); 403 goto out; 404 } 405 } 406 } 407 408 out: 409 return 0; 410 } 411 412 static void print_sample_iregs(struct perf_sample *sample, 413 struct perf_event_attr *attr) 414 { 415 struct regs_dump *regs = &sample->intr_regs; 416 uint64_t mask = attr->sample_regs_intr; 417 unsigned i = 0, r; 418 419 if (!regs) 420 return; 421 422 for_each_set_bit(r, (unsigned long *) &mask, sizeof(mask) * 8) { 423 u64 val = regs->regs[i++]; 424 printf("%5s:0x%"PRIx64" ", perf_reg_name(r), val); 425 } 426 } 427 428 static void print_sample_start(struct perf_sample *sample, 429 struct thread *thread, 430 struct perf_evsel *evsel) 431 { 432 struct perf_event_attr *attr = &evsel->attr; 433 unsigned long secs; 434 unsigned long usecs; 435 unsigned long long nsecs; 436 437 if (PRINT_FIELD(COMM)) { 438 if (latency_format) 439 printf("%8.8s ", thread__comm_str(thread)); 440 else if (PRINT_FIELD(IP) && symbol_conf.use_callchain) 441 printf("%s ", thread__comm_str(thread)); 442 else 443 printf("%16s ", thread__comm_str(thread)); 444 } 445 446 if (PRINT_FIELD(PID) && PRINT_FIELD(TID)) 447 printf("%5d/%-5d ", sample->pid, sample->tid); 448 else if (PRINT_FIELD(PID)) 449 printf("%5d ", sample->pid); 450 else if (PRINT_FIELD(TID)) 451 printf("%5d ", sample->tid); 452 453 if (PRINT_FIELD(CPU)) { 454 if (latency_format) 455 printf("%3d ", sample->cpu); 456 else 457 printf("[%03d] ", sample->cpu); 458 } 459 460 if (PRINT_FIELD(TIME)) { 461 nsecs = sample->time; 462 secs = nsecs / NSECS_PER_SEC; 463 nsecs -= secs * NSECS_PER_SEC; 464 usecs = nsecs / NSECS_PER_USEC; 465 if (nanosecs) 466 printf("%5lu.%09llu: ", secs, nsecs); 467 else 468 printf("%5lu.%06lu: ", secs, usecs); 469 } 470 } 471 472 static inline char 473 mispred_str(struct branch_entry *br) 474 { 475 if (!(br->flags.mispred || br->flags.predicted)) 476 return '-'; 477 478 return br->flags.predicted ? 'P' : 'M'; 479 } 480 481 static void print_sample_brstack(struct perf_sample *sample) 482 { 483 struct branch_stack *br = sample->branch_stack; 484 u64 i; 485 486 if (!(br && br->nr)) 487 return; 488 489 for (i = 0; i < br->nr; i++) { 490 printf(" 0x%"PRIx64"/0x%"PRIx64"/%c/%c/%c/%d ", 491 br->entries[i].from, 492 br->entries[i].to, 493 mispred_str( br->entries + i), 494 br->entries[i].flags.in_tx? 'X' : '-', 495 br->entries[i].flags.abort? 'A' : '-', 496 br->entries[i].flags.cycles); 497 } 498 } 499 500 static void print_sample_brstacksym(struct perf_sample *sample, 501 struct thread *thread) 502 { 503 struct branch_stack *br = sample->branch_stack; 504 struct addr_location alf, alt; 505 u64 i, from, to; 506 507 if (!(br && br->nr)) 508 return; 509 510 for (i = 0; i < br->nr; i++) { 511 512 memset(&alf, 0, sizeof(alf)); 513 memset(&alt, 0, sizeof(alt)); 514 from = br->entries[i].from; 515 to = br->entries[i].to; 516 517 thread__find_addr_map(thread, sample->cpumode, MAP__FUNCTION, from, &alf); 518 if (alf.map) 519 alf.sym = map__find_symbol(alf.map, alf.addr, NULL); 520 521 thread__find_addr_map(thread, sample->cpumode, MAP__FUNCTION, to, &alt); 522 if (alt.map) 523 alt.sym = map__find_symbol(alt.map, alt.addr, NULL); 524 525 symbol__fprintf_symname_offs(alf.sym, &alf, stdout); 526 putchar('/'); 527 symbol__fprintf_symname_offs(alt.sym, &alt, stdout); 528 printf("/%c/%c/%c/%d ", 529 mispred_str( br->entries + i), 530 br->entries[i].flags.in_tx? 'X' : '-', 531 br->entries[i].flags.abort? 'A' : '-', 532 br->entries[i].flags.cycles); 533 } 534 } 535 536 537 static void print_sample_addr(struct perf_sample *sample, 538 struct thread *thread, 539 struct perf_event_attr *attr) 540 { 541 struct addr_location al; 542 543 printf("%16" PRIx64, sample->addr); 544 545 if (!sample_addr_correlates_sym(attr)) 546 return; 547 548 thread__resolve(thread, &al, sample); 549 550 if (PRINT_FIELD(SYM)) { 551 printf(" "); 552 if (PRINT_FIELD(SYMOFFSET)) 553 symbol__fprintf_symname_offs(al.sym, &al, stdout); 554 else 555 symbol__fprintf_symname(al.sym, stdout); 556 } 557 558 if (PRINT_FIELD(DSO)) { 559 printf(" ("); 560 map__fprintf_dsoname(al.map, stdout); 561 printf(")"); 562 } 563 } 564 565 static void print_sample_bts(struct perf_sample *sample, 566 struct perf_evsel *evsel, 567 struct thread *thread, 568 struct addr_location *al) 569 { 570 struct perf_event_attr *attr = &evsel->attr; 571 bool print_srcline_last = false; 572 573 /* print branch_from information */ 574 if (PRINT_FIELD(IP)) { 575 unsigned int print_opts = output[attr->type].print_ip_opts; 576 struct callchain_cursor *cursor = NULL; 577 578 if (symbol_conf.use_callchain && sample->callchain && 579 thread__resolve_callchain(al->thread, &callchain_cursor, evsel, 580 sample, NULL, NULL, scripting_max_stack) == 0) 581 cursor = &callchain_cursor; 582 583 if (cursor == NULL) { 584 putchar(' '); 585 if (print_opts & EVSEL__PRINT_SRCLINE) { 586 print_srcline_last = true; 587 print_opts &= ~EVSEL__PRINT_SRCLINE; 588 } 589 } else 590 putchar('\n'); 591 592 sample__fprintf_sym(sample, al, 0, print_opts, cursor, stdout); 593 } 594 595 /* print branch_to information */ 596 if (PRINT_FIELD(ADDR) || 597 ((evsel->attr.sample_type & PERF_SAMPLE_ADDR) && 598 !output[attr->type].user_set)) { 599 printf(" => "); 600 print_sample_addr(sample, thread, attr); 601 } 602 603 if (print_srcline_last) 604 map__fprintf_srcline(al->map, al->addr, "\n ", stdout); 605 606 printf("\n"); 607 } 608 609 static void print_sample_flags(u32 flags) 610 { 611 const char *chars = PERF_IP_FLAG_CHARS; 612 const int n = strlen(PERF_IP_FLAG_CHARS); 613 char str[33]; 614 int i, pos = 0; 615 616 for (i = 0; i < n; i++, flags >>= 1) { 617 if (flags & 1) 618 str[pos++] = chars[i]; 619 } 620 for (; i < 32; i++, flags >>= 1) { 621 if (flags & 1) 622 str[pos++] = '?'; 623 } 624 str[pos] = 0; 625 printf(" %-4s ", str); 626 } 627 628 struct printer_data { 629 int line_no; 630 bool hit_nul; 631 bool is_printable; 632 }; 633 634 static void 635 print_sample_bpf_output_printer(enum binary_printer_ops op, 636 unsigned int val, 637 void *extra) 638 { 639 unsigned char ch = (unsigned char)val; 640 struct printer_data *printer_data = extra; 641 642 switch (op) { 643 case BINARY_PRINT_DATA_BEGIN: 644 printf("\n"); 645 break; 646 case BINARY_PRINT_LINE_BEGIN: 647 printf("%17s", !printer_data->line_no ? "BPF output:" : 648 " "); 649 break; 650 case BINARY_PRINT_ADDR: 651 printf(" %04x:", val); 652 break; 653 case BINARY_PRINT_NUM_DATA: 654 printf(" %02x", val); 655 break; 656 case BINARY_PRINT_NUM_PAD: 657 printf(" "); 658 break; 659 case BINARY_PRINT_SEP: 660 printf(" "); 661 break; 662 case BINARY_PRINT_CHAR_DATA: 663 if (printer_data->hit_nul && ch) 664 printer_data->is_printable = false; 665 666 if (!isprint(ch)) { 667 printf("%c", '.'); 668 669 if (!printer_data->is_printable) 670 break; 671 672 if (ch == '\0') 673 printer_data->hit_nul = true; 674 else 675 printer_data->is_printable = false; 676 } else { 677 printf("%c", ch); 678 } 679 break; 680 case BINARY_PRINT_CHAR_PAD: 681 printf(" "); 682 break; 683 case BINARY_PRINT_LINE_END: 684 printf("\n"); 685 printer_data->line_no++; 686 break; 687 case BINARY_PRINT_DATA_END: 688 default: 689 break; 690 } 691 } 692 693 static void print_sample_bpf_output(struct perf_sample *sample) 694 { 695 unsigned int nr_bytes = sample->raw_size; 696 struct printer_data printer_data = {0, false, true}; 697 698 print_binary(sample->raw_data, nr_bytes, 8, 699 print_sample_bpf_output_printer, &printer_data); 700 701 if (printer_data.is_printable && printer_data.hit_nul) 702 printf("%17s \"%s\"\n", "BPF string:", 703 (char *)(sample->raw_data)); 704 } 705 706 struct perf_script { 707 struct perf_tool tool; 708 struct perf_session *session; 709 bool show_task_events; 710 bool show_mmap_events; 711 bool show_switch_events; 712 bool allocated; 713 struct cpu_map *cpus; 714 struct thread_map *threads; 715 int name_width; 716 }; 717 718 static int perf_evlist__max_name_len(struct perf_evlist *evlist) 719 { 720 struct perf_evsel *evsel; 721 int max = 0; 722 723 evlist__for_each(evlist, evsel) { 724 int len = strlen(perf_evsel__name(evsel)); 725 726 max = MAX(len, max); 727 } 728 729 return max; 730 } 731 732 static size_t data_src__printf(u64 data_src) 733 { 734 struct mem_info mi = { .data_src.val = data_src }; 735 char decode[100]; 736 char out[100]; 737 static int maxlen; 738 int len; 739 740 perf_script__meminfo_scnprintf(decode, 100, &mi); 741 742 len = scnprintf(out, 100, "%16" PRIx64 " %s", data_src, decode); 743 if (maxlen < len) 744 maxlen = len; 745 746 return printf("%-*s", maxlen, out); 747 } 748 749 static void process_event(struct perf_script *script, 750 struct perf_sample *sample, struct perf_evsel *evsel, 751 struct addr_location *al) 752 { 753 struct thread *thread = al->thread; 754 struct perf_event_attr *attr = &evsel->attr; 755 756 if (output[attr->type].fields == 0) 757 return; 758 759 print_sample_start(sample, thread, evsel); 760 761 if (PRINT_FIELD(PERIOD)) 762 printf("%10" PRIu64 " ", sample->period); 763 764 if (PRINT_FIELD(EVNAME)) { 765 const char *evname = perf_evsel__name(evsel); 766 767 if (!script->name_width) 768 script->name_width = perf_evlist__max_name_len(script->session->evlist); 769 770 printf("%*s: ", script->name_width, 771 evname ? evname : "[unknown]"); 772 } 773 774 if (print_flags) 775 print_sample_flags(sample->flags); 776 777 if (is_bts_event(attr)) { 778 print_sample_bts(sample, evsel, thread, al); 779 return; 780 } 781 782 if (PRINT_FIELD(TRACE)) 783 event_format__print(evsel->tp_format, sample->cpu, 784 sample->raw_data, sample->raw_size); 785 if (PRINT_FIELD(ADDR)) 786 print_sample_addr(sample, thread, attr); 787 788 if (PRINT_FIELD(DATA_SRC)) 789 data_src__printf(sample->data_src); 790 791 if (PRINT_FIELD(WEIGHT)) 792 printf("%16" PRIu64, sample->weight); 793 794 if (PRINT_FIELD(IP)) { 795 struct callchain_cursor *cursor = NULL; 796 797 if (symbol_conf.use_callchain && sample->callchain && 798 thread__resolve_callchain(al->thread, &callchain_cursor, evsel, 799 sample, NULL, NULL, scripting_max_stack) == 0) 800 cursor = &callchain_cursor; 801 802 putchar(cursor ? '\n' : ' '); 803 sample__fprintf_sym(sample, al, 0, output[attr->type].print_ip_opts, cursor, stdout); 804 } 805 806 if (PRINT_FIELD(IREGS)) 807 print_sample_iregs(sample, attr); 808 809 if (PRINT_FIELD(BRSTACK)) 810 print_sample_brstack(sample); 811 else if (PRINT_FIELD(BRSTACKSYM)) 812 print_sample_brstacksym(sample, thread); 813 814 if (perf_evsel__is_bpf_output(evsel) && PRINT_FIELD(BPF_OUTPUT)) 815 print_sample_bpf_output(sample); 816 817 printf("\n"); 818 } 819 820 static struct scripting_ops *scripting_ops; 821 822 static void __process_stat(struct perf_evsel *counter, u64 tstamp) 823 { 824 int nthreads = thread_map__nr(counter->threads); 825 int ncpus = perf_evsel__nr_cpus(counter); 826 int cpu, thread; 827 static int header_printed; 828 829 if (counter->system_wide) 830 nthreads = 1; 831 832 if (!header_printed) { 833 printf("%3s %8s %15s %15s %15s %15s %s\n", 834 "CPU", "THREAD", "VAL", "ENA", "RUN", "TIME", "EVENT"); 835 header_printed = 1; 836 } 837 838 for (thread = 0; thread < nthreads; thread++) { 839 for (cpu = 0; cpu < ncpus; cpu++) { 840 struct perf_counts_values *counts; 841 842 counts = perf_counts(counter->counts, cpu, thread); 843 844 printf("%3d %8d %15" PRIu64 " %15" PRIu64 " %15" PRIu64 " %15" PRIu64 " %s\n", 845 counter->cpus->map[cpu], 846 thread_map__pid(counter->threads, thread), 847 counts->val, 848 counts->ena, 849 counts->run, 850 tstamp, 851 perf_evsel__name(counter)); 852 } 853 } 854 } 855 856 static void process_stat(struct perf_evsel *counter, u64 tstamp) 857 { 858 if (scripting_ops && scripting_ops->process_stat) 859 scripting_ops->process_stat(&stat_config, counter, tstamp); 860 else 861 __process_stat(counter, tstamp); 862 } 863 864 static void process_stat_interval(u64 tstamp) 865 { 866 if (scripting_ops && scripting_ops->process_stat_interval) 867 scripting_ops->process_stat_interval(tstamp); 868 } 869 870 static void setup_scripting(void) 871 { 872 setup_perl_scripting(); 873 setup_python_scripting(); 874 } 875 876 static int flush_scripting(void) 877 { 878 return scripting_ops ? scripting_ops->flush_script() : 0; 879 } 880 881 static int cleanup_scripting(void) 882 { 883 pr_debug("\nperf script stopped\n"); 884 885 return scripting_ops ? scripting_ops->stop_script() : 0; 886 } 887 888 static int process_sample_event(struct perf_tool *tool, 889 union perf_event *event, 890 struct perf_sample *sample, 891 struct perf_evsel *evsel, 892 struct machine *machine) 893 { 894 struct perf_script *scr = container_of(tool, struct perf_script, tool); 895 struct addr_location al; 896 897 if (debug_mode) { 898 if (sample->time < last_timestamp) { 899 pr_err("Samples misordered, previous: %" PRIu64 900 " this: %" PRIu64 "\n", last_timestamp, 901 sample->time); 902 nr_unordered++; 903 } 904 last_timestamp = sample->time; 905 return 0; 906 } 907 908 if (machine__resolve(machine, &al, sample) < 0) { 909 pr_err("problem processing %d event, skipping it.\n", 910 event->header.type); 911 return -1; 912 } 913 914 if (al.filtered) 915 goto out_put; 916 917 if (cpu_list && !test_bit(sample->cpu, cpu_bitmap)) 918 goto out_put; 919 920 if (scripting_ops) 921 scripting_ops->process_event(event, sample, evsel, &al); 922 else 923 process_event(scr, sample, evsel, &al); 924 925 out_put: 926 addr_location__put(&al); 927 return 0; 928 } 929 930 static int process_attr(struct perf_tool *tool, union perf_event *event, 931 struct perf_evlist **pevlist) 932 { 933 struct perf_script *scr = container_of(tool, struct perf_script, tool); 934 struct perf_evlist *evlist; 935 struct perf_evsel *evsel, *pos; 936 int err; 937 938 err = perf_event__process_attr(tool, event, pevlist); 939 if (err) 940 return err; 941 942 evlist = *pevlist; 943 evsel = perf_evlist__last(*pevlist); 944 945 if (evsel->attr.type >= PERF_TYPE_MAX) 946 return 0; 947 948 evlist__for_each(evlist, pos) { 949 if (pos->attr.type == evsel->attr.type && pos != evsel) 950 return 0; 951 } 952 953 set_print_ip_opts(&evsel->attr); 954 955 if (evsel->attr.sample_type) 956 err = perf_evsel__check_attr(evsel, scr->session); 957 958 return err; 959 } 960 961 static int process_comm_event(struct perf_tool *tool, 962 union perf_event *event, 963 struct perf_sample *sample, 964 struct machine *machine) 965 { 966 struct thread *thread; 967 struct perf_script *script = container_of(tool, struct perf_script, tool); 968 struct perf_session *session = script->session; 969 struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id); 970 int ret = -1; 971 972 thread = machine__findnew_thread(machine, event->comm.pid, event->comm.tid); 973 if (thread == NULL) { 974 pr_debug("problem processing COMM event, skipping it.\n"); 975 return -1; 976 } 977 978 if (perf_event__process_comm(tool, event, sample, machine) < 0) 979 goto out; 980 981 if (!evsel->attr.sample_id_all) { 982 sample->cpu = 0; 983 sample->time = 0; 984 sample->tid = event->comm.tid; 985 sample->pid = event->comm.pid; 986 } 987 print_sample_start(sample, thread, evsel); 988 perf_event__fprintf(event, stdout); 989 ret = 0; 990 out: 991 thread__put(thread); 992 return ret; 993 } 994 995 static int process_fork_event(struct perf_tool *tool, 996 union perf_event *event, 997 struct perf_sample *sample, 998 struct machine *machine) 999 { 1000 struct thread *thread; 1001 struct perf_script *script = container_of(tool, struct perf_script, tool); 1002 struct perf_session *session = script->session; 1003 struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id); 1004 1005 if (perf_event__process_fork(tool, event, sample, machine) < 0) 1006 return -1; 1007 1008 thread = machine__findnew_thread(machine, event->fork.pid, event->fork.tid); 1009 if (thread == NULL) { 1010 pr_debug("problem processing FORK event, skipping it.\n"); 1011 return -1; 1012 } 1013 1014 if (!evsel->attr.sample_id_all) { 1015 sample->cpu = 0; 1016 sample->time = event->fork.time; 1017 sample->tid = event->fork.tid; 1018 sample->pid = event->fork.pid; 1019 } 1020 print_sample_start(sample, thread, evsel); 1021 perf_event__fprintf(event, stdout); 1022 thread__put(thread); 1023 1024 return 0; 1025 } 1026 static int process_exit_event(struct perf_tool *tool, 1027 union perf_event *event, 1028 struct perf_sample *sample, 1029 struct machine *machine) 1030 { 1031 int err = 0; 1032 struct thread *thread; 1033 struct perf_script *script = container_of(tool, struct perf_script, tool); 1034 struct perf_session *session = script->session; 1035 struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id); 1036 1037 thread = machine__findnew_thread(machine, event->fork.pid, event->fork.tid); 1038 if (thread == NULL) { 1039 pr_debug("problem processing EXIT event, skipping it.\n"); 1040 return -1; 1041 } 1042 1043 if (!evsel->attr.sample_id_all) { 1044 sample->cpu = 0; 1045 sample->time = 0; 1046 sample->tid = event->fork.tid; 1047 sample->pid = event->fork.pid; 1048 } 1049 print_sample_start(sample, thread, evsel); 1050 perf_event__fprintf(event, stdout); 1051 1052 if (perf_event__process_exit(tool, event, sample, machine) < 0) 1053 err = -1; 1054 1055 thread__put(thread); 1056 return err; 1057 } 1058 1059 static int process_mmap_event(struct perf_tool *tool, 1060 union perf_event *event, 1061 struct perf_sample *sample, 1062 struct machine *machine) 1063 { 1064 struct thread *thread; 1065 struct perf_script *script = container_of(tool, struct perf_script, tool); 1066 struct perf_session *session = script->session; 1067 struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id); 1068 1069 if (perf_event__process_mmap(tool, event, sample, machine) < 0) 1070 return -1; 1071 1072 thread = machine__findnew_thread(machine, event->mmap.pid, event->mmap.tid); 1073 if (thread == NULL) { 1074 pr_debug("problem processing MMAP event, skipping it.\n"); 1075 return -1; 1076 } 1077 1078 if (!evsel->attr.sample_id_all) { 1079 sample->cpu = 0; 1080 sample->time = 0; 1081 sample->tid = event->mmap.tid; 1082 sample->pid = event->mmap.pid; 1083 } 1084 print_sample_start(sample, thread, evsel); 1085 perf_event__fprintf(event, stdout); 1086 thread__put(thread); 1087 return 0; 1088 } 1089 1090 static int process_mmap2_event(struct perf_tool *tool, 1091 union perf_event *event, 1092 struct perf_sample *sample, 1093 struct machine *machine) 1094 { 1095 struct thread *thread; 1096 struct perf_script *script = container_of(tool, struct perf_script, tool); 1097 struct perf_session *session = script->session; 1098 struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id); 1099 1100 if (perf_event__process_mmap2(tool, event, sample, machine) < 0) 1101 return -1; 1102 1103 thread = machine__findnew_thread(machine, event->mmap2.pid, event->mmap2.tid); 1104 if (thread == NULL) { 1105 pr_debug("problem processing MMAP2 event, skipping it.\n"); 1106 return -1; 1107 } 1108 1109 if (!evsel->attr.sample_id_all) { 1110 sample->cpu = 0; 1111 sample->time = 0; 1112 sample->tid = event->mmap2.tid; 1113 sample->pid = event->mmap2.pid; 1114 } 1115 print_sample_start(sample, thread, evsel); 1116 perf_event__fprintf(event, stdout); 1117 thread__put(thread); 1118 return 0; 1119 } 1120 1121 static int process_switch_event(struct perf_tool *tool, 1122 union perf_event *event, 1123 struct perf_sample *sample, 1124 struct machine *machine) 1125 { 1126 struct thread *thread; 1127 struct perf_script *script = container_of(tool, struct perf_script, tool); 1128 struct perf_session *session = script->session; 1129 struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id); 1130 1131 if (perf_event__process_switch(tool, event, sample, machine) < 0) 1132 return -1; 1133 1134 thread = machine__findnew_thread(machine, sample->pid, 1135 sample->tid); 1136 if (thread == NULL) { 1137 pr_debug("problem processing SWITCH event, skipping it.\n"); 1138 return -1; 1139 } 1140 1141 print_sample_start(sample, thread, evsel); 1142 perf_event__fprintf(event, stdout); 1143 thread__put(thread); 1144 return 0; 1145 } 1146 1147 static void sig_handler(int sig __maybe_unused) 1148 { 1149 session_done = 1; 1150 } 1151 1152 static int __cmd_script(struct perf_script *script) 1153 { 1154 int ret; 1155 1156 signal(SIGINT, sig_handler); 1157 1158 /* override event processing functions */ 1159 if (script->show_task_events) { 1160 script->tool.comm = process_comm_event; 1161 script->tool.fork = process_fork_event; 1162 script->tool.exit = process_exit_event; 1163 } 1164 if (script->show_mmap_events) { 1165 script->tool.mmap = process_mmap_event; 1166 script->tool.mmap2 = process_mmap2_event; 1167 } 1168 if (script->show_switch_events) 1169 script->tool.context_switch = process_switch_event; 1170 1171 ret = perf_session__process_events(script->session); 1172 1173 if (debug_mode) 1174 pr_err("Misordered timestamps: %" PRIu64 "\n", nr_unordered); 1175 1176 return ret; 1177 } 1178 1179 struct script_spec { 1180 struct list_head node; 1181 struct scripting_ops *ops; 1182 char spec[0]; 1183 }; 1184 1185 static LIST_HEAD(script_specs); 1186 1187 static struct script_spec *script_spec__new(const char *spec, 1188 struct scripting_ops *ops) 1189 { 1190 struct script_spec *s = malloc(sizeof(*s) + strlen(spec) + 1); 1191 1192 if (s != NULL) { 1193 strcpy(s->spec, spec); 1194 s->ops = ops; 1195 } 1196 1197 return s; 1198 } 1199 1200 static void script_spec__add(struct script_spec *s) 1201 { 1202 list_add_tail(&s->node, &script_specs); 1203 } 1204 1205 static struct script_spec *script_spec__find(const char *spec) 1206 { 1207 struct script_spec *s; 1208 1209 list_for_each_entry(s, &script_specs, node) 1210 if (strcasecmp(s->spec, spec) == 0) 1211 return s; 1212 return NULL; 1213 } 1214 1215 int script_spec_register(const char *spec, struct scripting_ops *ops) 1216 { 1217 struct script_spec *s; 1218 1219 s = script_spec__find(spec); 1220 if (s) 1221 return -1; 1222 1223 s = script_spec__new(spec, ops); 1224 if (!s) 1225 return -1; 1226 else 1227 script_spec__add(s); 1228 1229 return 0; 1230 } 1231 1232 static struct scripting_ops *script_spec__lookup(const char *spec) 1233 { 1234 struct script_spec *s = script_spec__find(spec); 1235 if (!s) 1236 return NULL; 1237 1238 return s->ops; 1239 } 1240 1241 static void list_available_languages(void) 1242 { 1243 struct script_spec *s; 1244 1245 fprintf(stderr, "\n"); 1246 fprintf(stderr, "Scripting language extensions (used in " 1247 "perf script -s [spec:]script.[spec]):\n\n"); 1248 1249 list_for_each_entry(s, &script_specs, node) 1250 fprintf(stderr, " %-42s [%s]\n", s->spec, s->ops->name); 1251 1252 fprintf(stderr, "\n"); 1253 } 1254 1255 static int parse_scriptname(const struct option *opt __maybe_unused, 1256 const char *str, int unset __maybe_unused) 1257 { 1258 char spec[PATH_MAX]; 1259 const char *script, *ext; 1260 int len; 1261 1262 if (strcmp(str, "lang") == 0) { 1263 list_available_languages(); 1264 exit(0); 1265 } 1266 1267 script = strchr(str, ':'); 1268 if (script) { 1269 len = script - str; 1270 if (len >= PATH_MAX) { 1271 fprintf(stderr, "invalid language specifier"); 1272 return -1; 1273 } 1274 strncpy(spec, str, len); 1275 spec[len] = '\0'; 1276 scripting_ops = script_spec__lookup(spec); 1277 if (!scripting_ops) { 1278 fprintf(stderr, "invalid language specifier"); 1279 return -1; 1280 } 1281 script++; 1282 } else { 1283 script = str; 1284 ext = strrchr(script, '.'); 1285 if (!ext) { 1286 fprintf(stderr, "invalid script extension"); 1287 return -1; 1288 } 1289 scripting_ops = script_spec__lookup(++ext); 1290 if (!scripting_ops) { 1291 fprintf(stderr, "invalid script extension"); 1292 return -1; 1293 } 1294 } 1295 1296 script_name = strdup(script); 1297 1298 return 0; 1299 } 1300 1301 static int parse_output_fields(const struct option *opt __maybe_unused, 1302 const char *arg, int unset __maybe_unused) 1303 { 1304 char *tok; 1305 int i, imax = ARRAY_SIZE(all_output_options); 1306 int j; 1307 int rc = 0; 1308 char *str = strdup(arg); 1309 int type = -1; 1310 1311 if (!str) 1312 return -ENOMEM; 1313 1314 /* first word can state for which event type the user is specifying 1315 * the fields. If no type exists, the specified fields apply to all 1316 * event types found in the file minus the invalid fields for a type. 1317 */ 1318 tok = strchr(str, ':'); 1319 if (tok) { 1320 *tok = '\0'; 1321 tok++; 1322 if (!strcmp(str, "hw")) 1323 type = PERF_TYPE_HARDWARE; 1324 else if (!strcmp(str, "sw")) 1325 type = PERF_TYPE_SOFTWARE; 1326 else if (!strcmp(str, "trace")) 1327 type = PERF_TYPE_TRACEPOINT; 1328 else if (!strcmp(str, "raw")) 1329 type = PERF_TYPE_RAW; 1330 else if (!strcmp(str, "break")) 1331 type = PERF_TYPE_BREAKPOINT; 1332 else { 1333 fprintf(stderr, "Invalid event type in field string.\n"); 1334 rc = -EINVAL; 1335 goto out; 1336 } 1337 1338 if (output[type].user_set) 1339 pr_warning("Overriding previous field request for %s events.\n", 1340 event_type(type)); 1341 1342 output[type].fields = 0; 1343 output[type].user_set = true; 1344 output[type].wildcard_set = false; 1345 1346 } else { 1347 tok = str; 1348 if (strlen(str) == 0) { 1349 fprintf(stderr, 1350 "Cannot set fields to 'none' for all event types.\n"); 1351 rc = -EINVAL; 1352 goto out; 1353 } 1354 1355 if (output_set_by_user()) 1356 pr_warning("Overriding previous field request for all events.\n"); 1357 1358 for (j = 0; j < PERF_TYPE_MAX; ++j) { 1359 output[j].fields = 0; 1360 output[j].user_set = true; 1361 output[j].wildcard_set = true; 1362 } 1363 } 1364 1365 for (tok = strtok(tok, ","); tok; tok = strtok(NULL, ",")) { 1366 for (i = 0; i < imax; ++i) { 1367 if (strcmp(tok, all_output_options[i].str) == 0) 1368 break; 1369 } 1370 if (i == imax && strcmp(tok, "flags") == 0) { 1371 print_flags = true; 1372 continue; 1373 } 1374 if (i == imax) { 1375 fprintf(stderr, "Invalid field requested.\n"); 1376 rc = -EINVAL; 1377 goto out; 1378 } 1379 1380 if (type == -1) { 1381 /* add user option to all events types for 1382 * which it is valid 1383 */ 1384 for (j = 0; j < PERF_TYPE_MAX; ++j) { 1385 if (output[j].invalid_fields & all_output_options[i].field) { 1386 pr_warning("\'%s\' not valid for %s events. Ignoring.\n", 1387 all_output_options[i].str, event_type(j)); 1388 } else 1389 output[j].fields |= all_output_options[i].field; 1390 } 1391 } else { 1392 if (output[type].invalid_fields & all_output_options[i].field) { 1393 fprintf(stderr, "\'%s\' not valid for %s events.\n", 1394 all_output_options[i].str, event_type(type)); 1395 1396 rc = -EINVAL; 1397 goto out; 1398 } 1399 output[type].fields |= all_output_options[i].field; 1400 } 1401 } 1402 1403 if (type >= 0) { 1404 if (output[type].fields == 0) { 1405 pr_debug("No fields requested for %s type. " 1406 "Events will not be displayed.\n", event_type(type)); 1407 } 1408 } 1409 1410 out: 1411 free(str); 1412 return rc; 1413 } 1414 1415 /* Helper function for filesystems that return a dent->d_type DT_UNKNOWN */ 1416 static int is_directory(const char *base_path, const struct dirent *dent) 1417 { 1418 char path[PATH_MAX]; 1419 struct stat st; 1420 1421 sprintf(path, "%s/%s", base_path, dent->d_name); 1422 if (stat(path, &st)) 1423 return 0; 1424 1425 return S_ISDIR(st.st_mode); 1426 } 1427 1428 #define for_each_lang(scripts_path, scripts_dir, lang_dirent) \ 1429 while ((lang_dirent = readdir(scripts_dir)) != NULL) \ 1430 if ((lang_dirent->d_type == DT_DIR || \ 1431 (lang_dirent->d_type == DT_UNKNOWN && \ 1432 is_directory(scripts_path, lang_dirent))) && \ 1433 (strcmp(lang_dirent->d_name, ".")) && \ 1434 (strcmp(lang_dirent->d_name, ".."))) 1435 1436 #define for_each_script(lang_path, lang_dir, script_dirent) \ 1437 while ((script_dirent = readdir(lang_dir)) != NULL) \ 1438 if (script_dirent->d_type != DT_DIR && \ 1439 (script_dirent->d_type != DT_UNKNOWN || \ 1440 !is_directory(lang_path, script_dirent))) 1441 1442 1443 #define RECORD_SUFFIX "-record" 1444 #define REPORT_SUFFIX "-report" 1445 1446 struct script_desc { 1447 struct list_head node; 1448 char *name; 1449 char *half_liner; 1450 char *args; 1451 }; 1452 1453 static LIST_HEAD(script_descs); 1454 1455 static struct script_desc *script_desc__new(const char *name) 1456 { 1457 struct script_desc *s = zalloc(sizeof(*s)); 1458 1459 if (s != NULL && name) 1460 s->name = strdup(name); 1461 1462 return s; 1463 } 1464 1465 static void script_desc__delete(struct script_desc *s) 1466 { 1467 zfree(&s->name); 1468 zfree(&s->half_liner); 1469 zfree(&s->args); 1470 free(s); 1471 } 1472 1473 static void script_desc__add(struct script_desc *s) 1474 { 1475 list_add_tail(&s->node, &script_descs); 1476 } 1477 1478 static struct script_desc *script_desc__find(const char *name) 1479 { 1480 struct script_desc *s; 1481 1482 list_for_each_entry(s, &script_descs, node) 1483 if (strcasecmp(s->name, name) == 0) 1484 return s; 1485 return NULL; 1486 } 1487 1488 static struct script_desc *script_desc__findnew(const char *name) 1489 { 1490 struct script_desc *s = script_desc__find(name); 1491 1492 if (s) 1493 return s; 1494 1495 s = script_desc__new(name); 1496 if (!s) 1497 goto out_delete_desc; 1498 1499 script_desc__add(s); 1500 1501 return s; 1502 1503 out_delete_desc: 1504 script_desc__delete(s); 1505 1506 return NULL; 1507 } 1508 1509 static const char *ends_with(const char *str, const char *suffix) 1510 { 1511 size_t suffix_len = strlen(suffix); 1512 const char *p = str; 1513 1514 if (strlen(str) > suffix_len) { 1515 p = str + strlen(str) - suffix_len; 1516 if (!strncmp(p, suffix, suffix_len)) 1517 return p; 1518 } 1519 1520 return NULL; 1521 } 1522 1523 static int read_script_info(struct script_desc *desc, const char *filename) 1524 { 1525 char line[BUFSIZ], *p; 1526 FILE *fp; 1527 1528 fp = fopen(filename, "r"); 1529 if (!fp) 1530 return -1; 1531 1532 while (fgets(line, sizeof(line), fp)) { 1533 p = ltrim(line); 1534 if (strlen(p) == 0) 1535 continue; 1536 if (*p != '#') 1537 continue; 1538 p++; 1539 if (strlen(p) && *p == '!') 1540 continue; 1541 1542 p = ltrim(p); 1543 if (strlen(p) && p[strlen(p) - 1] == '\n') 1544 p[strlen(p) - 1] = '\0'; 1545 1546 if (!strncmp(p, "description:", strlen("description:"))) { 1547 p += strlen("description:"); 1548 desc->half_liner = strdup(ltrim(p)); 1549 continue; 1550 } 1551 1552 if (!strncmp(p, "args:", strlen("args:"))) { 1553 p += strlen("args:"); 1554 desc->args = strdup(ltrim(p)); 1555 continue; 1556 } 1557 } 1558 1559 fclose(fp); 1560 1561 return 0; 1562 } 1563 1564 static char *get_script_root(struct dirent *script_dirent, const char *suffix) 1565 { 1566 char *script_root, *str; 1567 1568 script_root = strdup(script_dirent->d_name); 1569 if (!script_root) 1570 return NULL; 1571 1572 str = (char *)ends_with(script_root, suffix); 1573 if (!str) { 1574 free(script_root); 1575 return NULL; 1576 } 1577 1578 *str = '\0'; 1579 return script_root; 1580 } 1581 1582 static int list_available_scripts(const struct option *opt __maybe_unused, 1583 const char *s __maybe_unused, 1584 int unset __maybe_unused) 1585 { 1586 struct dirent *script_dirent, *lang_dirent; 1587 char scripts_path[MAXPATHLEN]; 1588 DIR *scripts_dir, *lang_dir; 1589 char script_path[MAXPATHLEN]; 1590 char lang_path[MAXPATHLEN]; 1591 struct script_desc *desc; 1592 char first_half[BUFSIZ]; 1593 char *script_root; 1594 1595 snprintf(scripts_path, MAXPATHLEN, "%s/scripts", get_argv_exec_path()); 1596 1597 scripts_dir = opendir(scripts_path); 1598 if (!scripts_dir) 1599 return -1; 1600 1601 for_each_lang(scripts_path, scripts_dir, lang_dirent) { 1602 snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path, 1603 lang_dirent->d_name); 1604 lang_dir = opendir(lang_path); 1605 if (!lang_dir) 1606 continue; 1607 1608 for_each_script(lang_path, lang_dir, script_dirent) { 1609 script_root = get_script_root(script_dirent, REPORT_SUFFIX); 1610 if (script_root) { 1611 desc = script_desc__findnew(script_root); 1612 snprintf(script_path, MAXPATHLEN, "%s/%s", 1613 lang_path, script_dirent->d_name); 1614 read_script_info(desc, script_path); 1615 free(script_root); 1616 } 1617 } 1618 } 1619 1620 fprintf(stdout, "List of available trace scripts:\n"); 1621 list_for_each_entry(desc, &script_descs, node) { 1622 sprintf(first_half, "%s %s", desc->name, 1623 desc->args ? desc->args : ""); 1624 fprintf(stdout, " %-36s %s\n", first_half, 1625 desc->half_liner ? desc->half_liner : ""); 1626 } 1627 1628 exit(0); 1629 } 1630 1631 /* 1632 * Some scripts specify the required events in their "xxx-record" file, 1633 * this function will check if the events in perf.data match those 1634 * mentioned in the "xxx-record". 1635 * 1636 * Fixme: All existing "xxx-record" are all in good formats "-e event ", 1637 * which is covered well now. And new parsing code should be added to 1638 * cover the future complexing formats like event groups etc. 1639 */ 1640 static int check_ev_match(char *dir_name, char *scriptname, 1641 struct perf_session *session) 1642 { 1643 char filename[MAXPATHLEN], evname[128]; 1644 char line[BUFSIZ], *p; 1645 struct perf_evsel *pos; 1646 int match, len; 1647 FILE *fp; 1648 1649 sprintf(filename, "%s/bin/%s-record", dir_name, scriptname); 1650 1651 fp = fopen(filename, "r"); 1652 if (!fp) 1653 return -1; 1654 1655 while (fgets(line, sizeof(line), fp)) { 1656 p = ltrim(line); 1657 if (*p == '#') 1658 continue; 1659 1660 while (strlen(p)) { 1661 p = strstr(p, "-e"); 1662 if (!p) 1663 break; 1664 1665 p += 2; 1666 p = ltrim(p); 1667 len = strcspn(p, " \t"); 1668 if (!len) 1669 break; 1670 1671 snprintf(evname, len + 1, "%s", p); 1672 1673 match = 0; 1674 evlist__for_each(session->evlist, pos) { 1675 if (!strcmp(perf_evsel__name(pos), evname)) { 1676 match = 1; 1677 break; 1678 } 1679 } 1680 1681 if (!match) { 1682 fclose(fp); 1683 return -1; 1684 } 1685 } 1686 } 1687 1688 fclose(fp); 1689 return 0; 1690 } 1691 1692 /* 1693 * Return -1 if none is found, otherwise the actual scripts number. 1694 * 1695 * Currently the only user of this function is the script browser, which 1696 * will list all statically runnable scripts, select one, execute it and 1697 * show the output in a perf browser. 1698 */ 1699 int find_scripts(char **scripts_array, char **scripts_path_array) 1700 { 1701 struct dirent *script_dirent, *lang_dirent; 1702 char scripts_path[MAXPATHLEN], lang_path[MAXPATHLEN]; 1703 DIR *scripts_dir, *lang_dir; 1704 struct perf_session *session; 1705 struct perf_data_file file = { 1706 .path = input_name, 1707 .mode = PERF_DATA_MODE_READ, 1708 }; 1709 char *temp; 1710 int i = 0; 1711 1712 session = perf_session__new(&file, false, NULL); 1713 if (!session) 1714 return -1; 1715 1716 snprintf(scripts_path, MAXPATHLEN, "%s/scripts", get_argv_exec_path()); 1717 1718 scripts_dir = opendir(scripts_path); 1719 if (!scripts_dir) { 1720 perf_session__delete(session); 1721 return -1; 1722 } 1723 1724 for_each_lang(scripts_path, scripts_dir, lang_dirent) { 1725 snprintf(lang_path, MAXPATHLEN, "%s/%s", scripts_path, 1726 lang_dirent->d_name); 1727 #ifdef NO_LIBPERL 1728 if (strstr(lang_path, "perl")) 1729 continue; 1730 #endif 1731 #ifdef NO_LIBPYTHON 1732 if (strstr(lang_path, "python")) 1733 continue; 1734 #endif 1735 1736 lang_dir = opendir(lang_path); 1737 if (!lang_dir) 1738 continue; 1739 1740 for_each_script(lang_path, lang_dir, script_dirent) { 1741 /* Skip those real time scripts: xxxtop.p[yl] */ 1742 if (strstr(script_dirent->d_name, "top.")) 1743 continue; 1744 sprintf(scripts_path_array[i], "%s/%s", lang_path, 1745 script_dirent->d_name); 1746 temp = strchr(script_dirent->d_name, '.'); 1747 snprintf(scripts_array[i], 1748 (temp - script_dirent->d_name) + 1, 1749 "%s", script_dirent->d_name); 1750 1751 if (check_ev_match(lang_path, 1752 scripts_array[i], session)) 1753 continue; 1754 1755 i++; 1756 } 1757 closedir(lang_dir); 1758 } 1759 1760 closedir(scripts_dir); 1761 perf_session__delete(session); 1762 return i; 1763 } 1764 1765 static char *get_script_path(const char *script_root, const char *suffix) 1766 { 1767 struct dirent *script_dirent, *lang_dirent; 1768 char scripts_path[MAXPATHLEN]; 1769 char script_path[MAXPATHLEN]; 1770 DIR *scripts_dir, *lang_dir; 1771 char lang_path[MAXPATHLEN]; 1772 char *__script_root; 1773 1774 snprintf(scripts_path, MAXPATHLEN, "%s/scripts", get_argv_exec_path()); 1775 1776 scripts_dir = opendir(scripts_path); 1777 if (!scripts_dir) 1778 return NULL; 1779 1780 for_each_lang(scripts_path, scripts_dir, lang_dirent) { 1781 snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path, 1782 lang_dirent->d_name); 1783 lang_dir = opendir(lang_path); 1784 if (!lang_dir) 1785 continue; 1786 1787 for_each_script(lang_path, lang_dir, script_dirent) { 1788 __script_root = get_script_root(script_dirent, suffix); 1789 if (__script_root && !strcmp(script_root, __script_root)) { 1790 free(__script_root); 1791 closedir(lang_dir); 1792 closedir(scripts_dir); 1793 snprintf(script_path, MAXPATHLEN, "%s/%s", 1794 lang_path, script_dirent->d_name); 1795 return strdup(script_path); 1796 } 1797 free(__script_root); 1798 } 1799 closedir(lang_dir); 1800 } 1801 closedir(scripts_dir); 1802 1803 return NULL; 1804 } 1805 1806 static bool is_top_script(const char *script_path) 1807 { 1808 return ends_with(script_path, "top") == NULL ? false : true; 1809 } 1810 1811 static int has_required_arg(char *script_path) 1812 { 1813 struct script_desc *desc; 1814 int n_args = 0; 1815 char *p; 1816 1817 desc = script_desc__new(NULL); 1818 1819 if (read_script_info(desc, script_path)) 1820 goto out; 1821 1822 if (!desc->args) 1823 goto out; 1824 1825 for (p = desc->args; *p; p++) 1826 if (*p == '<') 1827 n_args++; 1828 out: 1829 script_desc__delete(desc); 1830 1831 return n_args; 1832 } 1833 1834 static int have_cmd(int argc, const char **argv) 1835 { 1836 char **__argv = malloc(sizeof(const char *) * argc); 1837 1838 if (!__argv) { 1839 pr_err("malloc failed\n"); 1840 return -1; 1841 } 1842 1843 memcpy(__argv, argv, sizeof(const char *) * argc); 1844 argc = parse_options(argc, (const char **)__argv, record_options, 1845 NULL, PARSE_OPT_STOP_AT_NON_OPTION); 1846 free(__argv); 1847 1848 system_wide = (argc == 0); 1849 1850 return 0; 1851 } 1852 1853 static void script__setup_sample_type(struct perf_script *script) 1854 { 1855 struct perf_session *session = script->session; 1856 u64 sample_type = perf_evlist__combined_sample_type(session->evlist); 1857 1858 if (symbol_conf.use_callchain || symbol_conf.cumulate_callchain) { 1859 if ((sample_type & PERF_SAMPLE_REGS_USER) && 1860 (sample_type & PERF_SAMPLE_STACK_USER)) 1861 callchain_param.record_mode = CALLCHAIN_DWARF; 1862 else if (sample_type & PERF_SAMPLE_BRANCH_STACK) 1863 callchain_param.record_mode = CALLCHAIN_LBR; 1864 else 1865 callchain_param.record_mode = CALLCHAIN_FP; 1866 } 1867 } 1868 1869 static int process_stat_round_event(struct perf_tool *tool __maybe_unused, 1870 union perf_event *event, 1871 struct perf_session *session) 1872 { 1873 struct stat_round_event *round = &event->stat_round; 1874 struct perf_evsel *counter; 1875 1876 evlist__for_each(session->evlist, counter) { 1877 perf_stat_process_counter(&stat_config, counter); 1878 process_stat(counter, round->time); 1879 } 1880 1881 process_stat_interval(round->time); 1882 return 0; 1883 } 1884 1885 static int process_stat_config_event(struct perf_tool *tool __maybe_unused, 1886 union perf_event *event, 1887 struct perf_session *session __maybe_unused) 1888 { 1889 perf_event__read_stat_config(&stat_config, &event->stat_config); 1890 return 0; 1891 } 1892 1893 static int set_maps(struct perf_script *script) 1894 { 1895 struct perf_evlist *evlist = script->session->evlist; 1896 1897 if (!script->cpus || !script->threads) 1898 return 0; 1899 1900 if (WARN_ONCE(script->allocated, "stats double allocation\n")) 1901 return -EINVAL; 1902 1903 perf_evlist__set_maps(evlist, script->cpus, script->threads); 1904 1905 if (perf_evlist__alloc_stats(evlist, true)) 1906 return -ENOMEM; 1907 1908 script->allocated = true; 1909 return 0; 1910 } 1911 1912 static 1913 int process_thread_map_event(struct perf_tool *tool, 1914 union perf_event *event, 1915 struct perf_session *session __maybe_unused) 1916 { 1917 struct perf_script *script = container_of(tool, struct perf_script, tool); 1918 1919 if (script->threads) { 1920 pr_warning("Extra thread map event, ignoring.\n"); 1921 return 0; 1922 } 1923 1924 script->threads = thread_map__new_event(&event->thread_map); 1925 if (!script->threads) 1926 return -ENOMEM; 1927 1928 return set_maps(script); 1929 } 1930 1931 static 1932 int process_cpu_map_event(struct perf_tool *tool __maybe_unused, 1933 union perf_event *event, 1934 struct perf_session *session __maybe_unused) 1935 { 1936 struct perf_script *script = container_of(tool, struct perf_script, tool); 1937 1938 if (script->cpus) { 1939 pr_warning("Extra cpu map event, ignoring.\n"); 1940 return 0; 1941 } 1942 1943 script->cpus = cpu_map__new_data(&event->cpu_map.data); 1944 if (!script->cpus) 1945 return -ENOMEM; 1946 1947 return set_maps(script); 1948 } 1949 1950 int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused) 1951 { 1952 bool show_full_info = false; 1953 bool header = false; 1954 bool header_only = false; 1955 bool script_started = false; 1956 char *rec_script_path = NULL; 1957 char *rep_script_path = NULL; 1958 struct perf_session *session; 1959 struct itrace_synth_opts itrace_synth_opts = { .set = false, }; 1960 char *script_path = NULL; 1961 const char **__argv; 1962 int i, j, err = 0; 1963 struct perf_script script = { 1964 .tool = { 1965 .sample = process_sample_event, 1966 .mmap = perf_event__process_mmap, 1967 .mmap2 = perf_event__process_mmap2, 1968 .comm = perf_event__process_comm, 1969 .exit = perf_event__process_exit, 1970 .fork = perf_event__process_fork, 1971 .attr = process_attr, 1972 .event_update = perf_event__process_event_update, 1973 .tracing_data = perf_event__process_tracing_data, 1974 .build_id = perf_event__process_build_id, 1975 .id_index = perf_event__process_id_index, 1976 .auxtrace_info = perf_event__process_auxtrace_info, 1977 .auxtrace = perf_event__process_auxtrace, 1978 .auxtrace_error = perf_event__process_auxtrace_error, 1979 .stat = perf_event__process_stat_event, 1980 .stat_round = process_stat_round_event, 1981 .stat_config = process_stat_config_event, 1982 .thread_map = process_thread_map_event, 1983 .cpu_map = process_cpu_map_event, 1984 .ordered_events = true, 1985 .ordering_requires_timestamps = true, 1986 }, 1987 }; 1988 struct perf_data_file file = { 1989 .mode = PERF_DATA_MODE_READ, 1990 }; 1991 const struct option options[] = { 1992 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, 1993 "dump raw trace in ASCII"), 1994 OPT_INCR('v', "verbose", &verbose, 1995 "be more verbose (show symbol address, etc)"), 1996 OPT_BOOLEAN('L', "Latency", &latency_format, 1997 "show latency attributes (irqs/preemption disabled, etc)"), 1998 OPT_CALLBACK_NOOPT('l', "list", NULL, NULL, "list available scripts", 1999 list_available_scripts), 2000 OPT_CALLBACK('s', "script", NULL, "name", 2001 "script file name (lang:script name, script name, or *)", 2002 parse_scriptname), 2003 OPT_STRING('g', "gen-script", &generate_script_lang, "lang", 2004 "generate perf-script.xx script in specified language"), 2005 OPT_STRING('i', "input", &input_name, "file", "input file name"), 2006 OPT_BOOLEAN('d', "debug-mode", &debug_mode, 2007 "do various checks like samples ordering and lost events"), 2008 OPT_BOOLEAN(0, "header", &header, "Show data header."), 2009 OPT_BOOLEAN(0, "header-only", &header_only, "Show only data header."), 2010 OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name, 2011 "file", "vmlinux pathname"), 2012 OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name, 2013 "file", "kallsyms pathname"), 2014 OPT_BOOLEAN('G', "hide-call-graph", &no_callchain, 2015 "When printing symbols do not display call chain"), 2016 OPT_CALLBACK(0, "symfs", NULL, "directory", 2017 "Look for files with symbols relative to this directory", 2018 symbol__config_symfs), 2019 OPT_CALLBACK('F', "fields", NULL, "str", 2020 "comma separated output fields prepend with 'type:'. " 2021 "Valid types: hw,sw,trace,raw. " 2022 "Fields: comm,tid,pid,time,cpu,event,trace,ip,sym,dso," 2023 "addr,symoff,period,iregs,brstack,brstacksym,flags", parse_output_fields), 2024 OPT_BOOLEAN('a', "all-cpus", &system_wide, 2025 "system-wide collection from all CPUs"), 2026 OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]", 2027 "only consider these symbols"), 2028 OPT_STRING('C', "cpu", &cpu_list, "cpu", "list of cpus to profile"), 2029 OPT_STRING('c', "comms", &symbol_conf.comm_list_str, "comm[,comm...]", 2030 "only display events for these comms"), 2031 OPT_STRING(0, "pid", &symbol_conf.pid_list_str, "pid[,pid...]", 2032 "only consider symbols in these pids"), 2033 OPT_STRING(0, "tid", &symbol_conf.tid_list_str, "tid[,tid...]", 2034 "only consider symbols in these tids"), 2035 OPT_UINTEGER(0, "max-stack", &scripting_max_stack, 2036 "Set the maximum stack depth when parsing the callchain, " 2037 "anything beyond the specified depth will be ignored. " 2038 "Default: kernel.perf_event_max_stack or " __stringify(PERF_MAX_STACK_DEPTH)), 2039 OPT_BOOLEAN('I', "show-info", &show_full_info, 2040 "display extended information from perf.data file"), 2041 OPT_BOOLEAN('\0', "show-kernel-path", &symbol_conf.show_kernel_path, 2042 "Show the path of [kernel.kallsyms]"), 2043 OPT_BOOLEAN('\0', "show-task-events", &script.show_task_events, 2044 "Show the fork/comm/exit events"), 2045 OPT_BOOLEAN('\0', "show-mmap-events", &script.show_mmap_events, 2046 "Show the mmap events"), 2047 OPT_BOOLEAN('\0', "show-switch-events", &script.show_switch_events, 2048 "Show context switch events (if recorded)"), 2049 OPT_BOOLEAN('f', "force", &file.force, "don't complain, do it"), 2050 OPT_BOOLEAN(0, "ns", &nanosecs, 2051 "Use 9 decimal places when displaying time"), 2052 OPT_CALLBACK_OPTARG(0, "itrace", &itrace_synth_opts, NULL, "opts", 2053 "Instruction Tracing options", 2054 itrace_parse_synth_opts), 2055 OPT_BOOLEAN(0, "full-source-path", &srcline_full_filename, 2056 "Show full source file name path for source lines"), 2057 OPT_BOOLEAN(0, "demangle", &symbol_conf.demangle, 2058 "Enable symbol demangling"), 2059 OPT_BOOLEAN(0, "demangle-kernel", &symbol_conf.demangle_kernel, 2060 "Enable kernel symbol demangling"), 2061 2062 OPT_END() 2063 }; 2064 const char * const script_subcommands[] = { "record", "report", NULL }; 2065 const char *script_usage[] = { 2066 "perf script [<options>]", 2067 "perf script [<options>] record <script> [<record-options>] <command>", 2068 "perf script [<options>] report <script> [script-args]", 2069 "perf script [<options>] <script> [<record-options>] <command>", 2070 "perf script [<options>] <top-script> [script-args]", 2071 NULL 2072 }; 2073 2074 setup_scripting(); 2075 2076 argc = parse_options_subcommand(argc, argv, options, script_subcommands, script_usage, 2077 PARSE_OPT_STOP_AT_NON_OPTION); 2078 2079 file.path = input_name; 2080 2081 if (argc > 1 && !strncmp(argv[0], "rec", strlen("rec"))) { 2082 rec_script_path = get_script_path(argv[1], RECORD_SUFFIX); 2083 if (!rec_script_path) 2084 return cmd_record(argc, argv, NULL); 2085 } 2086 2087 if (argc > 1 && !strncmp(argv[0], "rep", strlen("rep"))) { 2088 rep_script_path = get_script_path(argv[1], REPORT_SUFFIX); 2089 if (!rep_script_path) { 2090 fprintf(stderr, 2091 "Please specify a valid report script" 2092 "(see 'perf script -l' for listing)\n"); 2093 return -1; 2094 } 2095 } 2096 2097 if (itrace_synth_opts.callchain && 2098 itrace_synth_opts.callchain_sz > scripting_max_stack) 2099 scripting_max_stack = itrace_synth_opts.callchain_sz; 2100 2101 /* make sure PERF_EXEC_PATH is set for scripts */ 2102 set_argv_exec_path(get_argv_exec_path()); 2103 2104 if (argc && !script_name && !rec_script_path && !rep_script_path) { 2105 int live_pipe[2]; 2106 int rep_args; 2107 pid_t pid; 2108 2109 rec_script_path = get_script_path(argv[0], RECORD_SUFFIX); 2110 rep_script_path = get_script_path(argv[0], REPORT_SUFFIX); 2111 2112 if (!rec_script_path && !rep_script_path) { 2113 usage_with_options_msg(script_usage, options, 2114 "Couldn't find script `%s'\n\n See perf" 2115 " script -l for available scripts.\n", argv[0]); 2116 } 2117 2118 if (is_top_script(argv[0])) { 2119 rep_args = argc - 1; 2120 } else { 2121 int rec_args; 2122 2123 rep_args = has_required_arg(rep_script_path); 2124 rec_args = (argc - 1) - rep_args; 2125 if (rec_args < 0) { 2126 usage_with_options_msg(script_usage, options, 2127 "`%s' script requires options." 2128 "\n\n See perf script -l for available " 2129 "scripts and options.\n", argv[0]); 2130 } 2131 } 2132 2133 if (pipe(live_pipe) < 0) { 2134 perror("failed to create pipe"); 2135 return -1; 2136 } 2137 2138 pid = fork(); 2139 if (pid < 0) { 2140 perror("failed to fork"); 2141 return -1; 2142 } 2143 2144 if (!pid) { 2145 j = 0; 2146 2147 dup2(live_pipe[1], 1); 2148 close(live_pipe[0]); 2149 2150 if (is_top_script(argv[0])) { 2151 system_wide = true; 2152 } else if (!system_wide) { 2153 if (have_cmd(argc - rep_args, &argv[rep_args]) != 0) { 2154 err = -1; 2155 goto out; 2156 } 2157 } 2158 2159 __argv = malloc((argc + 6) * sizeof(const char *)); 2160 if (!__argv) { 2161 pr_err("malloc failed\n"); 2162 err = -ENOMEM; 2163 goto out; 2164 } 2165 2166 __argv[j++] = "/bin/sh"; 2167 __argv[j++] = rec_script_path; 2168 if (system_wide) 2169 __argv[j++] = "-a"; 2170 __argv[j++] = "-q"; 2171 __argv[j++] = "-o"; 2172 __argv[j++] = "-"; 2173 for (i = rep_args + 1; i < argc; i++) 2174 __argv[j++] = argv[i]; 2175 __argv[j++] = NULL; 2176 2177 execvp("/bin/sh", (char **)__argv); 2178 free(__argv); 2179 exit(-1); 2180 } 2181 2182 dup2(live_pipe[0], 0); 2183 close(live_pipe[1]); 2184 2185 __argv = malloc((argc + 4) * sizeof(const char *)); 2186 if (!__argv) { 2187 pr_err("malloc failed\n"); 2188 err = -ENOMEM; 2189 goto out; 2190 } 2191 2192 j = 0; 2193 __argv[j++] = "/bin/sh"; 2194 __argv[j++] = rep_script_path; 2195 for (i = 1; i < rep_args + 1; i++) 2196 __argv[j++] = argv[i]; 2197 __argv[j++] = "-i"; 2198 __argv[j++] = "-"; 2199 __argv[j++] = NULL; 2200 2201 execvp("/bin/sh", (char **)__argv); 2202 free(__argv); 2203 exit(-1); 2204 } 2205 2206 if (rec_script_path) 2207 script_path = rec_script_path; 2208 if (rep_script_path) 2209 script_path = rep_script_path; 2210 2211 if (script_path) { 2212 j = 0; 2213 2214 if (!rec_script_path) 2215 system_wide = false; 2216 else if (!system_wide) { 2217 if (have_cmd(argc - 1, &argv[1]) != 0) { 2218 err = -1; 2219 goto out; 2220 } 2221 } 2222 2223 __argv = malloc((argc + 2) * sizeof(const char *)); 2224 if (!__argv) { 2225 pr_err("malloc failed\n"); 2226 err = -ENOMEM; 2227 goto out; 2228 } 2229 2230 __argv[j++] = "/bin/sh"; 2231 __argv[j++] = script_path; 2232 if (system_wide) 2233 __argv[j++] = "-a"; 2234 for (i = 2; i < argc; i++) 2235 __argv[j++] = argv[i]; 2236 __argv[j++] = NULL; 2237 2238 execvp("/bin/sh", (char **)__argv); 2239 free(__argv); 2240 exit(-1); 2241 } 2242 2243 if (!script_name) 2244 setup_pager(); 2245 2246 session = perf_session__new(&file, false, &script.tool); 2247 if (session == NULL) 2248 return -1; 2249 2250 if (header || header_only) { 2251 perf_session__fprintf_info(session, stdout, show_full_info); 2252 if (header_only) 2253 goto out_delete; 2254 } 2255 2256 if (symbol__init(&session->header.env) < 0) 2257 goto out_delete; 2258 2259 script.session = session; 2260 script__setup_sample_type(&script); 2261 2262 session->itrace_synth_opts = &itrace_synth_opts; 2263 2264 if (cpu_list) { 2265 err = perf_session__cpu_bitmap(session, cpu_list, cpu_bitmap); 2266 if (err < 0) 2267 goto out_delete; 2268 } 2269 2270 if (!no_callchain) 2271 symbol_conf.use_callchain = true; 2272 else 2273 symbol_conf.use_callchain = false; 2274 2275 if (session->tevent.pevent && 2276 pevent_set_function_resolver(session->tevent.pevent, 2277 machine__resolve_kernel_addr, 2278 &session->machines.host) < 0) { 2279 pr_err("%s: failed to set libtraceevent function resolver\n", __func__); 2280 return -1; 2281 } 2282 2283 if (generate_script_lang) { 2284 struct stat perf_stat; 2285 int input; 2286 2287 if (output_set_by_user()) { 2288 fprintf(stderr, 2289 "custom fields not supported for generated scripts"); 2290 err = -EINVAL; 2291 goto out_delete; 2292 } 2293 2294 input = open(file.path, O_RDONLY); /* input_name */ 2295 if (input < 0) { 2296 err = -errno; 2297 perror("failed to open file"); 2298 goto out_delete; 2299 } 2300 2301 err = fstat(input, &perf_stat); 2302 if (err < 0) { 2303 perror("failed to stat file"); 2304 goto out_delete; 2305 } 2306 2307 if (!perf_stat.st_size) { 2308 fprintf(stderr, "zero-sized file, nothing to do!\n"); 2309 goto out_delete; 2310 } 2311 2312 scripting_ops = script_spec__lookup(generate_script_lang); 2313 if (!scripting_ops) { 2314 fprintf(stderr, "invalid language specifier"); 2315 err = -ENOENT; 2316 goto out_delete; 2317 } 2318 2319 err = scripting_ops->generate_script(session->tevent.pevent, 2320 "perf-script"); 2321 goto out_delete; 2322 } 2323 2324 if (script_name) { 2325 err = scripting_ops->start_script(script_name, argc, argv); 2326 if (err) 2327 goto out_delete; 2328 pr_debug("perf script started with script %s\n\n", script_name); 2329 script_started = true; 2330 } 2331 2332 2333 err = perf_session__check_output_opt(session); 2334 if (err < 0) 2335 goto out_delete; 2336 2337 err = __cmd_script(&script); 2338 2339 flush_scripting(); 2340 2341 out_delete: 2342 perf_evlist__free_stats(session->evlist); 2343 perf_session__delete(session); 2344 2345 if (script_started) 2346 cleanup_scripting(); 2347 out: 2348 return err; 2349 } 2350