1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * builtin-report.c 4 * 5 * Builtin report command: Analyze the perf.data input file, 6 * look up and read DSOs and symbol information and display 7 * a histogram of results, along various sorting keys. 8 */ 9 #include "builtin.h" 10 11 #include "util/util.h" 12 #include "util/config.h" 13 14 #include "util/annotate.h" 15 #include "util/color.h" 16 #include <linux/list.h> 17 #include <linux/rbtree.h> 18 #include <linux/err.h> 19 #include "util/symbol.h" 20 #include "util/callchain.h" 21 #include "util/values.h" 22 23 #include "perf.h" 24 #include "util/debug.h" 25 #include "util/evlist.h" 26 #include "util/evsel.h" 27 #include "util/header.h" 28 #include "util/session.h" 29 #include "util/tool.h" 30 31 #include <subcmd/parse-options.h> 32 #include <subcmd/exec-cmd.h> 33 #include "util/parse-events.h" 34 35 #include "util/thread.h" 36 #include "util/sort.h" 37 #include "util/hist.h" 38 #include "util/data.h" 39 #include "arch/common.h" 40 #include "util/time-utils.h" 41 #include "util/auxtrace.h" 42 #include "util/units.h" 43 #include "util/branch.h" 44 45 #include <dlfcn.h> 46 #include <errno.h> 47 #include <inttypes.h> 48 #include <regex.h> 49 #include <signal.h> 50 #include <linux/bitmap.h> 51 #include <linux/stringify.h> 52 #include <sys/types.h> 53 #include <sys/stat.h> 54 #include <unistd.h> 55 #include <linux/mman.h> 56 57 struct report { 58 struct perf_tool tool; 59 struct perf_session *session; 60 bool use_tui, use_gtk, use_stdio; 61 bool show_full_info; 62 bool show_threads; 63 bool inverted_callchain; 64 bool mem_mode; 65 bool stats_mode; 66 bool tasks_mode; 67 bool mmaps_mode; 68 bool header; 69 bool header_only; 70 bool nonany_branch_mode; 71 bool group_set; 72 int max_stack; 73 struct perf_read_values show_threads_values; 74 const char *pretty_printing_style; 75 const char *cpu_list; 76 const char *symbol_filter_str; 77 const char *time_str; 78 struct perf_time_interval *ptime_range; 79 int range_size; 80 int range_num; 81 float min_percent; 82 u64 nr_entries; 83 u64 queue_size; 84 int socket_filter; 85 DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS); 86 struct branch_type_stat brtype_stat; 87 }; 88 89 static int report__config(const char *var, const char *value, void *cb) 90 { 91 struct report *rep = cb; 92 93 if (!strcmp(var, "report.group")) { 94 symbol_conf.event_group = perf_config_bool(var, value); 95 return 0; 96 } 97 if (!strcmp(var, "report.percent-limit")) { 98 double pcnt = strtof(value, NULL); 99 100 rep->min_percent = pcnt; 101 callchain_param.min_percent = pcnt; 102 return 0; 103 } 104 if (!strcmp(var, "report.children")) { 105 symbol_conf.cumulate_callchain = perf_config_bool(var, value); 106 return 0; 107 } 108 if (!strcmp(var, "report.queue-size")) 109 return perf_config_u64(&rep->queue_size, var, value); 110 111 if (!strcmp(var, "report.sort_order")) { 112 default_sort_order = strdup(value); 113 return 0; 114 } 115 116 return 0; 117 } 118 119 static int hist_iter__report_callback(struct hist_entry_iter *iter, 120 struct addr_location *al, bool single, 121 void *arg) 122 { 123 int err = 0; 124 struct report *rep = arg; 125 struct hist_entry *he = iter->he; 126 struct perf_evsel *evsel = iter->evsel; 127 struct perf_sample *sample = iter->sample; 128 struct mem_info *mi; 129 struct branch_info *bi; 130 131 if (!ui__has_annotation()) 132 return 0; 133 134 hist__account_cycles(sample->branch_stack, al, sample, 135 rep->nonany_branch_mode); 136 137 if (sort__mode == SORT_MODE__BRANCH) { 138 bi = he->branch_info; 139 err = addr_map_symbol__inc_samples(&bi->from, sample, evsel->idx); 140 if (err) 141 goto out; 142 143 err = addr_map_symbol__inc_samples(&bi->to, sample, evsel->idx); 144 145 } else if (rep->mem_mode) { 146 mi = he->mem_info; 147 err = addr_map_symbol__inc_samples(&mi->daddr, sample, evsel->idx); 148 if (err) 149 goto out; 150 151 err = hist_entry__inc_addr_samples(he, sample, evsel->idx, al->addr); 152 153 } else if (symbol_conf.cumulate_callchain) { 154 if (single) 155 err = hist_entry__inc_addr_samples(he, sample, evsel->idx, 156 al->addr); 157 } else { 158 err = hist_entry__inc_addr_samples(he, sample, evsel->idx, al->addr); 159 } 160 161 out: 162 return err; 163 } 164 165 static int hist_iter__branch_callback(struct hist_entry_iter *iter, 166 struct addr_location *al __maybe_unused, 167 bool single __maybe_unused, 168 void *arg) 169 { 170 struct hist_entry *he = iter->he; 171 struct report *rep = arg; 172 struct branch_info *bi; 173 struct perf_sample *sample = iter->sample; 174 struct perf_evsel *evsel = iter->evsel; 175 int err; 176 177 if (!ui__has_annotation()) 178 return 0; 179 180 hist__account_cycles(sample->branch_stack, al, sample, 181 rep->nonany_branch_mode); 182 183 bi = he->branch_info; 184 err = addr_map_symbol__inc_samples(&bi->from, sample, evsel->idx); 185 if (err) 186 goto out; 187 188 err = addr_map_symbol__inc_samples(&bi->to, sample, evsel->idx); 189 190 branch_type_count(&rep->brtype_stat, &bi->flags, 191 bi->from.addr, bi->to.addr); 192 193 out: 194 return err; 195 } 196 197 /* 198 * Events in data file are not collect in groups, but we still want 199 * the group display. Set the artificial group and set the leader's 200 * forced_leader flag to notify the display code. 201 */ 202 static void setup_forced_leader(struct report *report, 203 struct perf_evlist *evlist) 204 { 205 if (report->group_set && !evlist->nr_groups) { 206 struct perf_evsel *leader = perf_evlist__first(evlist); 207 208 perf_evlist__set_leader(evlist); 209 leader->forced_leader = true; 210 } 211 } 212 213 static int process_feature_event(struct perf_tool *tool, 214 union perf_event *event, 215 struct perf_session *session __maybe_unused) 216 { 217 struct report *rep = container_of(tool, struct report, tool); 218 219 if (event->feat.feat_id < HEADER_LAST_FEATURE) 220 return perf_event__process_feature(tool, event, session); 221 222 if (event->feat.feat_id != HEADER_LAST_FEATURE) { 223 pr_err("failed: wrong feature ID: %" PRIu64 "\n", 224 event->feat.feat_id); 225 return -1; 226 } 227 228 /* 229 * All features are received, we can force the 230 * group if needed. 231 */ 232 setup_forced_leader(rep, session->evlist); 233 return 0; 234 } 235 236 static int process_sample_event(struct perf_tool *tool, 237 union perf_event *event, 238 struct perf_sample *sample, 239 struct perf_evsel *evsel, 240 struct machine *machine) 241 { 242 struct report *rep = container_of(tool, struct report, tool); 243 struct addr_location al; 244 struct hist_entry_iter iter = { 245 .evsel = evsel, 246 .sample = sample, 247 .hide_unresolved = symbol_conf.hide_unresolved, 248 .add_entry_cb = hist_iter__report_callback, 249 }; 250 int ret = 0; 251 252 if (perf_time__ranges_skip_sample(rep->ptime_range, rep->range_num, 253 sample->time)) { 254 return 0; 255 } 256 257 if (machine__resolve(machine, &al, sample) < 0) { 258 pr_debug("problem processing %d event, skipping it.\n", 259 event->header.type); 260 return -1; 261 } 262 263 if (symbol_conf.hide_unresolved && al.sym == NULL) 264 goto out_put; 265 266 if (rep->cpu_list && !test_bit(sample->cpu, rep->cpu_bitmap)) 267 goto out_put; 268 269 if (sort__mode == SORT_MODE__BRANCH) { 270 /* 271 * A non-synthesized event might not have a branch stack if 272 * branch stacks have been synthesized (using itrace options). 273 */ 274 if (!sample->branch_stack) 275 goto out_put; 276 277 iter.add_entry_cb = hist_iter__branch_callback; 278 iter.ops = &hist_iter_branch; 279 } else if (rep->mem_mode) { 280 iter.ops = &hist_iter_mem; 281 } else if (symbol_conf.cumulate_callchain) { 282 iter.ops = &hist_iter_cumulative; 283 } else { 284 iter.ops = &hist_iter_normal; 285 } 286 287 if (al.map != NULL) 288 al.map->dso->hit = 1; 289 290 ret = hist_entry_iter__add(&iter, &al, rep->max_stack, rep); 291 if (ret < 0) 292 pr_debug("problem adding hist entry, skipping event\n"); 293 out_put: 294 addr_location__put(&al); 295 return ret; 296 } 297 298 static int process_read_event(struct perf_tool *tool, 299 union perf_event *event, 300 struct perf_sample *sample __maybe_unused, 301 struct perf_evsel *evsel, 302 struct machine *machine __maybe_unused) 303 { 304 struct report *rep = container_of(tool, struct report, tool); 305 306 if (rep->show_threads) { 307 const char *name = evsel ? perf_evsel__name(evsel) : "unknown"; 308 int err = perf_read_values_add_value(&rep->show_threads_values, 309 event->read.pid, event->read.tid, 310 evsel->idx, 311 name, 312 event->read.value); 313 314 if (err) 315 return err; 316 } 317 318 return 0; 319 } 320 321 /* For pipe mode, sample_type is not currently set */ 322 static int report__setup_sample_type(struct report *rep) 323 { 324 struct perf_session *session = rep->session; 325 u64 sample_type = perf_evlist__combined_sample_type(session->evlist); 326 bool is_pipe = perf_data__is_pipe(session->data); 327 328 if (session->itrace_synth_opts->callchain || 329 (!is_pipe && 330 perf_header__has_feat(&session->header, HEADER_AUXTRACE) && 331 !session->itrace_synth_opts->set)) 332 sample_type |= PERF_SAMPLE_CALLCHAIN; 333 334 if (session->itrace_synth_opts->last_branch) 335 sample_type |= PERF_SAMPLE_BRANCH_STACK; 336 337 if (!is_pipe && !(sample_type & PERF_SAMPLE_CALLCHAIN)) { 338 if (perf_hpp_list.parent) { 339 ui__error("Selected --sort parent, but no " 340 "callchain data. Did you call " 341 "'perf record' without -g?\n"); 342 return -EINVAL; 343 } 344 if (symbol_conf.use_callchain && 345 !symbol_conf.show_branchflag_count) { 346 ui__error("Selected -g or --branch-history.\n" 347 "But no callchain or branch data.\n" 348 "Did you call 'perf record' without -g or -b?\n"); 349 return -1; 350 } 351 } else if (!callchain_param.enabled && 352 callchain_param.mode != CHAIN_NONE && 353 !symbol_conf.use_callchain) { 354 symbol_conf.use_callchain = true; 355 if (callchain_register_param(&callchain_param) < 0) { 356 ui__error("Can't register callchain params.\n"); 357 return -EINVAL; 358 } 359 } 360 361 if (symbol_conf.cumulate_callchain) { 362 /* Silently ignore if callchain is missing */ 363 if (!(sample_type & PERF_SAMPLE_CALLCHAIN)) { 364 symbol_conf.cumulate_callchain = false; 365 perf_hpp__cancel_cumulate(); 366 } 367 } 368 369 if (sort__mode == SORT_MODE__BRANCH) { 370 if (!is_pipe && 371 !(sample_type & PERF_SAMPLE_BRANCH_STACK)) { 372 ui__error("Selected -b but no branch data. " 373 "Did you call perf record without -b?\n"); 374 return -1; 375 } 376 } 377 378 if (symbol_conf.use_callchain || symbol_conf.cumulate_callchain) { 379 if ((sample_type & PERF_SAMPLE_REGS_USER) && 380 (sample_type & PERF_SAMPLE_STACK_USER)) { 381 callchain_param.record_mode = CALLCHAIN_DWARF; 382 dwarf_callchain_users = true; 383 } else if (sample_type & PERF_SAMPLE_BRANCH_STACK) 384 callchain_param.record_mode = CALLCHAIN_LBR; 385 else 386 callchain_param.record_mode = CALLCHAIN_FP; 387 } 388 389 /* ??? handle more cases than just ANY? */ 390 if (!(perf_evlist__combined_branch_type(session->evlist) & 391 PERF_SAMPLE_BRANCH_ANY)) 392 rep->nonany_branch_mode = true; 393 394 return 0; 395 } 396 397 static void sig_handler(int sig __maybe_unused) 398 { 399 session_done = 1; 400 } 401 402 static size_t hists__fprintf_nr_sample_events(struct hists *hists, struct report *rep, 403 const char *evname, FILE *fp) 404 { 405 size_t ret; 406 char unit; 407 unsigned long nr_samples = hists->stats.nr_events[PERF_RECORD_SAMPLE]; 408 u64 nr_events = hists->stats.total_period; 409 struct perf_evsel *evsel = hists_to_evsel(hists); 410 char buf[512]; 411 size_t size = sizeof(buf); 412 int socked_id = hists->socket_filter; 413 414 if (quiet) 415 return 0; 416 417 if (symbol_conf.filter_relative) { 418 nr_samples = hists->stats.nr_non_filtered_samples; 419 nr_events = hists->stats.total_non_filtered_period; 420 } 421 422 if (perf_evsel__is_group_event(evsel)) { 423 struct perf_evsel *pos; 424 425 perf_evsel__group_desc(evsel, buf, size); 426 evname = buf; 427 428 for_each_group_member(pos, evsel) { 429 const struct hists *pos_hists = evsel__hists(pos); 430 431 if (symbol_conf.filter_relative) { 432 nr_samples += pos_hists->stats.nr_non_filtered_samples; 433 nr_events += pos_hists->stats.total_non_filtered_period; 434 } else { 435 nr_samples += pos_hists->stats.nr_events[PERF_RECORD_SAMPLE]; 436 nr_events += pos_hists->stats.total_period; 437 } 438 } 439 } 440 441 nr_samples = convert_unit(nr_samples, &unit); 442 ret = fprintf(fp, "# Samples: %lu%c", nr_samples, unit); 443 if (evname != NULL) { 444 ret += fprintf(fp, " of event%s '%s'", 445 evsel->nr_members > 1 ? "s" : "", evname); 446 } 447 448 if (rep->time_str) 449 ret += fprintf(fp, " (time slices: %s)", rep->time_str); 450 451 if (symbol_conf.show_ref_callgraph && 452 strstr(evname, "call-graph=no")) { 453 ret += fprintf(fp, ", show reference callgraph"); 454 } 455 456 if (rep->mem_mode) { 457 ret += fprintf(fp, "\n# Total weight : %" PRIu64, nr_events); 458 ret += fprintf(fp, "\n# Sort order : %s", sort_order ? : default_mem_sort_order); 459 } else 460 ret += fprintf(fp, "\n# Event count (approx.): %" PRIu64, nr_events); 461 462 if (socked_id > -1) 463 ret += fprintf(fp, "\n# Processor Socket: %d", socked_id); 464 465 return ret + fprintf(fp, "\n#\n"); 466 } 467 468 static int perf_evlist__tty_browse_hists(struct perf_evlist *evlist, 469 struct report *rep, 470 const char *help) 471 { 472 struct perf_evsel *pos; 473 474 if (!quiet) { 475 fprintf(stdout, "#\n# Total Lost Samples: %" PRIu64 "\n#\n", 476 evlist->stats.total_lost_samples); 477 } 478 479 evlist__for_each_entry(evlist, pos) { 480 struct hists *hists = evsel__hists(pos); 481 const char *evname = perf_evsel__name(pos); 482 483 if (symbol_conf.event_group && 484 !perf_evsel__is_group_leader(pos)) 485 continue; 486 487 hists__fprintf_nr_sample_events(hists, rep, evname, stdout); 488 hists__fprintf(hists, !quiet, 0, 0, rep->min_percent, stdout, 489 symbol_conf.use_callchain || 490 symbol_conf.show_branchflag_count); 491 fprintf(stdout, "\n\n"); 492 } 493 494 if (!quiet) 495 fprintf(stdout, "#\n# (%s)\n#\n", help); 496 497 if (rep->show_threads) { 498 bool style = !strcmp(rep->pretty_printing_style, "raw"); 499 perf_read_values_display(stdout, &rep->show_threads_values, 500 style); 501 perf_read_values_destroy(&rep->show_threads_values); 502 } 503 504 if (sort__mode == SORT_MODE__BRANCH) 505 branch_type_stat_display(stdout, &rep->brtype_stat); 506 507 return 0; 508 } 509 510 static void report__warn_kptr_restrict(const struct report *rep) 511 { 512 struct map *kernel_map = machine__kernel_map(&rep->session->machines.host); 513 struct kmap *kernel_kmap = kernel_map ? map__kmap(kernel_map) : NULL; 514 515 if (perf_evlist__exclude_kernel(rep->session->evlist)) 516 return; 517 518 if (kernel_map == NULL || 519 (kernel_map->dso->hit && 520 (kernel_kmap->ref_reloc_sym == NULL || 521 kernel_kmap->ref_reloc_sym->addr == 0))) { 522 const char *desc = 523 "As no suitable kallsyms nor vmlinux was found, kernel samples\n" 524 "can't be resolved."; 525 526 if (kernel_map && map__has_symbols(kernel_map)) { 527 desc = "If some relocation was applied (e.g. " 528 "kexec) symbols may be misresolved."; 529 } 530 531 ui__warning( 532 "Kernel address maps (/proc/{kallsyms,modules}) were restricted.\n\n" 533 "Check /proc/sys/kernel/kptr_restrict before running 'perf record'.\n\n%s\n\n" 534 "Samples in kernel modules can't be resolved as well.\n\n", 535 desc); 536 } 537 } 538 539 static int report__gtk_browse_hists(struct report *rep, const char *help) 540 { 541 int (*hist_browser)(struct perf_evlist *evlist, const char *help, 542 struct hist_browser_timer *timer, float min_pcnt); 543 544 hist_browser = dlsym(perf_gtk_handle, "perf_evlist__gtk_browse_hists"); 545 546 if (hist_browser == NULL) { 547 ui__error("GTK browser not found!\n"); 548 return -1; 549 } 550 551 return hist_browser(rep->session->evlist, help, NULL, rep->min_percent); 552 } 553 554 static int report__browse_hists(struct report *rep) 555 { 556 int ret; 557 struct perf_session *session = rep->session; 558 struct perf_evlist *evlist = session->evlist; 559 const char *help = perf_tip(system_path(TIPDIR)); 560 561 if (help == NULL) { 562 /* fallback for people who don't install perf ;-) */ 563 help = perf_tip(DOCDIR); 564 if (help == NULL) 565 help = "Cannot load tips.txt file, please install perf!"; 566 } 567 568 switch (use_browser) { 569 case 1: 570 ret = perf_evlist__tui_browse_hists(evlist, help, NULL, 571 rep->min_percent, 572 &session->header.env, 573 true); 574 /* 575 * Usually "ret" is the last pressed key, and we only 576 * care if the key notifies us to switch data file. 577 */ 578 if (ret != K_SWITCH_INPUT_DATA) 579 ret = 0; 580 break; 581 case 2: 582 ret = report__gtk_browse_hists(rep, help); 583 break; 584 default: 585 ret = perf_evlist__tty_browse_hists(evlist, rep, help); 586 break; 587 } 588 589 return ret; 590 } 591 592 static int report__collapse_hists(struct report *rep) 593 { 594 struct ui_progress prog; 595 struct perf_evsel *pos; 596 int ret = 0; 597 598 ui_progress__init(&prog, rep->nr_entries, "Merging related events..."); 599 600 evlist__for_each_entry(rep->session->evlist, pos) { 601 struct hists *hists = evsel__hists(pos); 602 603 if (pos->idx == 0) 604 hists->symbol_filter_str = rep->symbol_filter_str; 605 606 hists->socket_filter = rep->socket_filter; 607 608 ret = hists__collapse_resort(hists, &prog); 609 if (ret < 0) 610 break; 611 612 /* Non-group events are considered as leader */ 613 if (symbol_conf.event_group && 614 !perf_evsel__is_group_leader(pos)) { 615 struct hists *leader_hists = evsel__hists(pos->leader); 616 617 hists__match(leader_hists, hists); 618 hists__link(leader_hists, hists); 619 } 620 } 621 622 ui_progress__finish(); 623 return ret; 624 } 625 626 static void report__output_resort(struct report *rep) 627 { 628 struct ui_progress prog; 629 struct perf_evsel *pos; 630 631 ui_progress__init(&prog, rep->nr_entries, "Sorting events for output..."); 632 633 evlist__for_each_entry(rep->session->evlist, pos) 634 perf_evsel__output_resort(pos, &prog); 635 636 ui_progress__finish(); 637 } 638 639 static void stats_setup(struct report *rep) 640 { 641 memset(&rep->tool, 0, sizeof(rep->tool)); 642 rep->tool.no_warn = true; 643 } 644 645 static int stats_print(struct report *rep) 646 { 647 struct perf_session *session = rep->session; 648 649 perf_session__fprintf_nr_events(session, stdout); 650 return 0; 651 } 652 653 static void tasks_setup(struct report *rep) 654 { 655 memset(&rep->tool, 0, sizeof(rep->tool)); 656 rep->tool.ordered_events = true; 657 if (rep->mmaps_mode) { 658 rep->tool.mmap = perf_event__process_mmap; 659 rep->tool.mmap2 = perf_event__process_mmap2; 660 } 661 rep->tool.comm = perf_event__process_comm; 662 rep->tool.exit = perf_event__process_exit; 663 rep->tool.fork = perf_event__process_fork; 664 rep->tool.no_warn = true; 665 } 666 667 struct task { 668 struct thread *thread; 669 struct list_head list; 670 struct list_head children; 671 }; 672 673 static struct task *tasks_list(struct task *task, struct machine *machine) 674 { 675 struct thread *parent_thread, *thread = task->thread; 676 struct task *parent_task; 677 678 /* Already listed. */ 679 if (!list_empty(&task->list)) 680 return NULL; 681 682 /* Last one in the chain. */ 683 if (thread->ppid == -1) 684 return task; 685 686 parent_thread = machine__find_thread(machine, -1, thread->ppid); 687 if (!parent_thread) 688 return ERR_PTR(-ENOENT); 689 690 parent_task = thread__priv(parent_thread); 691 list_add_tail(&task->list, &parent_task->children); 692 return tasks_list(parent_task, machine); 693 } 694 695 static size_t maps__fprintf_task(struct maps *maps, int indent, FILE *fp) 696 { 697 size_t printed = 0; 698 struct rb_node *nd; 699 700 for (nd = rb_first(&maps->entries); nd; nd = rb_next(nd)) { 701 struct map *map = rb_entry(nd, struct map, rb_node); 702 703 printed += fprintf(fp, "%*s %" PRIx64 "-%" PRIx64 " %c%c%c%c %08" PRIx64 " %" PRIu64 " %s\n", 704 indent, "", map->start, map->end, 705 map->prot & PROT_READ ? 'r' : '-', 706 map->prot & PROT_WRITE ? 'w' : '-', 707 map->prot & PROT_EXEC ? 'x' : '-', 708 map->flags & MAP_SHARED ? 's' : 'p', 709 map->pgoff, 710 map->ino, map->dso->name); 711 } 712 713 return printed; 714 } 715 716 static int map_groups__fprintf_task(struct map_groups *mg, int indent, FILE *fp) 717 { 718 int printed = 0, i; 719 for (i = 0; i < MAP__NR_TYPES; ++i) 720 printed += maps__fprintf_task(&mg->maps[i], indent, fp); 721 return printed; 722 } 723 724 static void task__print_level(struct task *task, FILE *fp, int level) 725 { 726 struct thread *thread = task->thread; 727 struct task *child; 728 int comm_indent = fprintf(fp, " %8d %8d %8d |%*s", 729 thread->pid_, thread->tid, thread->ppid, 730 level, ""); 731 732 fprintf(fp, "%s\n", thread__comm_str(thread)); 733 734 map_groups__fprintf_task(thread->mg, comm_indent, fp); 735 736 if (!list_empty(&task->children)) { 737 list_for_each_entry(child, &task->children, list) 738 task__print_level(child, fp, level + 1); 739 } 740 } 741 742 static int tasks_print(struct report *rep, FILE *fp) 743 { 744 struct perf_session *session = rep->session; 745 struct machine *machine = &session->machines.host; 746 struct task *tasks, *task; 747 unsigned int nr = 0, itask = 0, i; 748 struct rb_node *nd; 749 LIST_HEAD(list); 750 751 /* 752 * No locking needed while accessing machine->threads, 753 * because --tasks is single threaded command. 754 */ 755 756 /* Count all the threads. */ 757 for (i = 0; i < THREADS__TABLE_SIZE; i++) 758 nr += machine->threads[i].nr; 759 760 tasks = malloc(sizeof(*tasks) * nr); 761 if (!tasks) 762 return -ENOMEM; 763 764 for (i = 0; i < THREADS__TABLE_SIZE; i++) { 765 struct threads *threads = &machine->threads[i]; 766 767 for (nd = rb_first(&threads->entries); nd; nd = rb_next(nd)) { 768 task = tasks + itask++; 769 770 task->thread = rb_entry(nd, struct thread, rb_node); 771 INIT_LIST_HEAD(&task->children); 772 INIT_LIST_HEAD(&task->list); 773 thread__set_priv(task->thread, task); 774 } 775 } 776 777 /* 778 * Iterate every task down to the unprocessed parent 779 * and link all in task children list. Task with no 780 * parent is added into 'list'. 781 */ 782 for (itask = 0; itask < nr; itask++) { 783 task = tasks + itask; 784 785 if (!list_empty(&task->list)) 786 continue; 787 788 task = tasks_list(task, machine); 789 if (IS_ERR(task)) { 790 pr_err("Error: failed to process tasks\n"); 791 free(tasks); 792 return PTR_ERR(task); 793 } 794 795 if (task) 796 list_add_tail(&task->list, &list); 797 } 798 799 fprintf(fp, "# %8s %8s %8s %s\n", "pid", "tid", "ppid", "comm"); 800 801 list_for_each_entry(task, &list, list) 802 task__print_level(task, fp, 0); 803 804 free(tasks); 805 return 0; 806 } 807 808 static int __cmd_report(struct report *rep) 809 { 810 int ret; 811 struct perf_session *session = rep->session; 812 struct perf_evsel *pos; 813 struct perf_data *data = session->data; 814 815 signal(SIGINT, sig_handler); 816 817 if (rep->cpu_list) { 818 ret = perf_session__cpu_bitmap(session, rep->cpu_list, 819 rep->cpu_bitmap); 820 if (ret) { 821 ui__error("failed to set cpu bitmap\n"); 822 return ret; 823 } 824 session->itrace_synth_opts->cpu_bitmap = rep->cpu_bitmap; 825 } 826 827 if (rep->show_threads) { 828 ret = perf_read_values_init(&rep->show_threads_values); 829 if (ret) 830 return ret; 831 } 832 833 ret = report__setup_sample_type(rep); 834 if (ret) { 835 /* report__setup_sample_type() already showed error message */ 836 return ret; 837 } 838 839 if (rep->stats_mode) 840 stats_setup(rep); 841 842 if (rep->tasks_mode) 843 tasks_setup(rep); 844 845 ret = perf_session__process_events(session); 846 if (ret) { 847 ui__error("failed to process sample\n"); 848 return ret; 849 } 850 851 if (rep->stats_mode) 852 return stats_print(rep); 853 854 if (rep->tasks_mode) 855 return tasks_print(rep, stdout); 856 857 report__warn_kptr_restrict(rep); 858 859 evlist__for_each_entry(session->evlist, pos) 860 rep->nr_entries += evsel__hists(pos)->nr_entries; 861 862 if (use_browser == 0) { 863 if (verbose > 3) 864 perf_session__fprintf(session, stdout); 865 866 if (verbose > 2) 867 perf_session__fprintf_dsos(session, stdout); 868 869 if (dump_trace) { 870 perf_session__fprintf_nr_events(session, stdout); 871 perf_evlist__fprintf_nr_events(session->evlist, stdout); 872 return 0; 873 } 874 } 875 876 ret = report__collapse_hists(rep); 877 if (ret) { 878 ui__error("failed to process hist entry\n"); 879 return ret; 880 } 881 882 if (session_done()) 883 return 0; 884 885 /* 886 * recalculate number of entries after collapsing since it 887 * might be changed during the collapse phase. 888 */ 889 rep->nr_entries = 0; 890 evlist__for_each_entry(session->evlist, pos) 891 rep->nr_entries += evsel__hists(pos)->nr_entries; 892 893 if (rep->nr_entries == 0) { 894 ui__error("The %s file has no samples!\n", data->file.path); 895 return 0; 896 } 897 898 report__output_resort(rep); 899 900 return report__browse_hists(rep); 901 } 902 903 static int 904 report_parse_callchain_opt(const struct option *opt, const char *arg, int unset) 905 { 906 struct callchain_param *callchain = opt->value; 907 908 callchain->enabled = !unset; 909 /* 910 * --no-call-graph 911 */ 912 if (unset) { 913 symbol_conf.use_callchain = false; 914 callchain->mode = CHAIN_NONE; 915 return 0; 916 } 917 918 return parse_callchain_report_opt(arg); 919 } 920 921 int 922 report_parse_ignore_callees_opt(const struct option *opt __maybe_unused, 923 const char *arg, int unset __maybe_unused) 924 { 925 if (arg) { 926 int err = regcomp(&ignore_callees_regex, arg, REG_EXTENDED); 927 if (err) { 928 char buf[BUFSIZ]; 929 regerror(err, &ignore_callees_regex, buf, sizeof(buf)); 930 pr_err("Invalid --ignore-callees regex: %s\n%s", arg, buf); 931 return -1; 932 } 933 have_ignore_callees = 1; 934 } 935 936 return 0; 937 } 938 939 static int 940 parse_branch_mode(const struct option *opt, 941 const char *str __maybe_unused, int unset) 942 { 943 int *branch_mode = opt->value; 944 945 *branch_mode = !unset; 946 return 0; 947 } 948 949 static int 950 parse_percent_limit(const struct option *opt, const char *str, 951 int unset __maybe_unused) 952 { 953 struct report *rep = opt->value; 954 double pcnt = strtof(str, NULL); 955 956 rep->min_percent = pcnt; 957 callchain_param.min_percent = pcnt; 958 return 0; 959 } 960 961 #define CALLCHAIN_DEFAULT_OPT "graph,0.5,caller,function,percent" 962 963 const char report_callchain_help[] = "Display call graph (stack chain/backtrace):\n\n" 964 CALLCHAIN_REPORT_HELP 965 "\n\t\t\t\tDefault: " CALLCHAIN_DEFAULT_OPT; 966 967 int cmd_report(int argc, const char **argv) 968 { 969 struct perf_session *session; 970 struct itrace_synth_opts itrace_synth_opts = { .set = 0, }; 971 struct stat st; 972 bool has_br_stack = false; 973 int branch_mode = -1; 974 bool branch_call_mode = false; 975 char callchain_default_opt[] = CALLCHAIN_DEFAULT_OPT; 976 const char * const report_usage[] = { 977 "perf report [<options>]", 978 NULL 979 }; 980 struct report report = { 981 .tool = { 982 .sample = process_sample_event, 983 .mmap = perf_event__process_mmap, 984 .mmap2 = perf_event__process_mmap2, 985 .comm = perf_event__process_comm, 986 .namespaces = perf_event__process_namespaces, 987 .exit = perf_event__process_exit, 988 .fork = perf_event__process_fork, 989 .lost = perf_event__process_lost, 990 .read = process_read_event, 991 .attr = perf_event__process_attr, 992 .tracing_data = perf_event__process_tracing_data, 993 .build_id = perf_event__process_build_id, 994 .id_index = perf_event__process_id_index, 995 .auxtrace_info = perf_event__process_auxtrace_info, 996 .auxtrace = perf_event__process_auxtrace, 997 .feature = process_feature_event, 998 .ordered_events = true, 999 .ordering_requires_timestamps = true, 1000 }, 1001 .max_stack = PERF_MAX_STACK_DEPTH, 1002 .pretty_printing_style = "normal", 1003 .socket_filter = -1, 1004 }; 1005 const struct option options[] = { 1006 OPT_STRING('i', "input", &input_name, "file", 1007 "input file name"), 1008 OPT_INCR('v', "verbose", &verbose, 1009 "be more verbose (show symbol address, etc)"), 1010 OPT_BOOLEAN('q', "quiet", &quiet, "Do not show any message"), 1011 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, 1012 "dump raw trace in ASCII"), 1013 OPT_BOOLEAN(0, "stats", &report.stats_mode, "Display event stats"), 1014 OPT_BOOLEAN(0, "tasks", &report.tasks_mode, "Display recorded tasks"), 1015 OPT_BOOLEAN(0, "mmaps", &report.mmaps_mode, "Display recorded tasks memory maps"), 1016 OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name, 1017 "file", "vmlinux pathname"), 1018 OPT_BOOLEAN(0, "ignore-vmlinux", &symbol_conf.ignore_vmlinux, 1019 "don't load vmlinux even if found"), 1020 OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name, 1021 "file", "kallsyms pathname"), 1022 OPT_BOOLEAN('f', "force", &symbol_conf.force, "don't complain, do it"), 1023 OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules, 1024 "load module symbols - WARNING: use only with -k and LIVE kernel"), 1025 OPT_BOOLEAN('n', "show-nr-samples", &symbol_conf.show_nr_samples, 1026 "Show a column with the number of samples"), 1027 OPT_BOOLEAN('T', "threads", &report.show_threads, 1028 "Show per-thread event counters"), 1029 OPT_STRING(0, "pretty", &report.pretty_printing_style, "key", 1030 "pretty printing style key: normal raw"), 1031 OPT_BOOLEAN(0, "tui", &report.use_tui, "Use the TUI interface"), 1032 OPT_BOOLEAN(0, "gtk", &report.use_gtk, "Use the GTK2 interface"), 1033 OPT_BOOLEAN(0, "stdio", &report.use_stdio, 1034 "Use the stdio interface"), 1035 OPT_BOOLEAN(0, "header", &report.header, "Show data header."), 1036 OPT_BOOLEAN(0, "header-only", &report.header_only, 1037 "Show only data header."), 1038 OPT_STRING('s', "sort", &sort_order, "key[,key2...]", 1039 "sort by key(s): pid, comm, dso, symbol, parent, cpu, srcline, ..." 1040 " Please refer the man page for the complete list."), 1041 OPT_STRING('F', "fields", &field_order, "key[,keys...]", 1042 "output field(s): overhead, period, sample plus all of sort keys"), 1043 OPT_BOOLEAN(0, "show-cpu-utilization", &symbol_conf.show_cpu_utilization, 1044 "Show sample percentage for different cpu modes"), 1045 OPT_BOOLEAN_FLAG(0, "showcpuutilization", &symbol_conf.show_cpu_utilization, 1046 "Show sample percentage for different cpu modes", PARSE_OPT_HIDDEN), 1047 OPT_STRING('p', "parent", &parent_pattern, "regex", 1048 "regex filter to identify parent, see: '--sort parent'"), 1049 OPT_BOOLEAN('x', "exclude-other", &symbol_conf.exclude_other, 1050 "Only display entries with parent-match"), 1051 OPT_CALLBACK_DEFAULT('g', "call-graph", &callchain_param, 1052 "print_type,threshold[,print_limit],order,sort_key[,branch],value", 1053 report_callchain_help, &report_parse_callchain_opt, 1054 callchain_default_opt), 1055 OPT_BOOLEAN(0, "children", &symbol_conf.cumulate_callchain, 1056 "Accumulate callchains of children and show total overhead as well"), 1057 OPT_INTEGER(0, "max-stack", &report.max_stack, 1058 "Set the maximum stack depth when parsing the callchain, " 1059 "anything beyond the specified depth will be ignored. " 1060 "Default: kernel.perf_event_max_stack or " __stringify(PERF_MAX_STACK_DEPTH)), 1061 OPT_BOOLEAN('G', "inverted", &report.inverted_callchain, 1062 "alias for inverted call graph"), 1063 OPT_CALLBACK(0, "ignore-callees", NULL, "regex", 1064 "ignore callees of these functions in call graphs", 1065 report_parse_ignore_callees_opt), 1066 OPT_STRING('d', "dsos", &symbol_conf.dso_list_str, "dso[,dso...]", 1067 "only consider symbols in these dsos"), 1068 OPT_STRING('c', "comms", &symbol_conf.comm_list_str, "comm[,comm...]", 1069 "only consider symbols in these comms"), 1070 OPT_STRING(0, "pid", &symbol_conf.pid_list_str, "pid[,pid...]", 1071 "only consider symbols in these pids"), 1072 OPT_STRING(0, "tid", &symbol_conf.tid_list_str, "tid[,tid...]", 1073 "only consider symbols in these tids"), 1074 OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]", 1075 "only consider these symbols"), 1076 OPT_STRING(0, "symbol-filter", &report.symbol_filter_str, "filter", 1077 "only show symbols that (partially) match with this filter"), 1078 OPT_STRING('w', "column-widths", &symbol_conf.col_width_list_str, 1079 "width[,width...]", 1080 "don't try to adjust column width, use these fixed values"), 1081 OPT_STRING_NOEMPTY('t', "field-separator", &symbol_conf.field_sep, "separator", 1082 "separator for columns, no spaces will be added between " 1083 "columns '.' is reserved."), 1084 OPT_BOOLEAN('U', "hide-unresolved", &symbol_conf.hide_unresolved, 1085 "Only display entries resolved to a symbol"), 1086 OPT_CALLBACK(0, "symfs", NULL, "directory", 1087 "Look for files with symbols relative to this directory", 1088 symbol__config_symfs), 1089 OPT_STRING('C', "cpu", &report.cpu_list, "cpu", 1090 "list of cpus to profile"), 1091 OPT_BOOLEAN('I', "show-info", &report.show_full_info, 1092 "Display extended information about perf.data file"), 1093 OPT_BOOLEAN(0, "source", &symbol_conf.annotate_src, 1094 "Interleave source code with assembly code (default)"), 1095 OPT_BOOLEAN(0, "asm-raw", &symbol_conf.annotate_asm_raw, 1096 "Display raw encoding of assembly instructions (default)"), 1097 OPT_STRING('M', "disassembler-style", &disassembler_style, "disassembler style", 1098 "Specify disassembler style (e.g. -M intel for intel syntax)"), 1099 OPT_BOOLEAN(0, "show-total-period", &symbol_conf.show_total_period, 1100 "Show a column with the sum of periods"), 1101 OPT_BOOLEAN_SET(0, "group", &symbol_conf.event_group, &report.group_set, 1102 "Show event group information together"), 1103 OPT_CALLBACK_NOOPT('b', "branch-stack", &branch_mode, "", 1104 "use branch records for per branch histogram filling", 1105 parse_branch_mode), 1106 OPT_BOOLEAN(0, "branch-history", &branch_call_mode, 1107 "add last branch records to call history"), 1108 OPT_STRING(0, "objdump", &objdump_path, "path", 1109 "objdump binary to use for disassembly and annotations"), 1110 OPT_BOOLEAN(0, "demangle", &symbol_conf.demangle, 1111 "Disable symbol demangling"), 1112 OPT_BOOLEAN(0, "demangle-kernel", &symbol_conf.demangle_kernel, 1113 "Enable kernel symbol demangling"), 1114 OPT_BOOLEAN(0, "mem-mode", &report.mem_mode, "mem access profile"), 1115 OPT_CALLBACK(0, "percent-limit", &report, "percent", 1116 "Don't show entries under that percent", parse_percent_limit), 1117 OPT_CALLBACK(0, "percentage", NULL, "relative|absolute", 1118 "how to display percentage of filtered entries", parse_filter_percentage), 1119 OPT_CALLBACK_OPTARG(0, "itrace", &itrace_synth_opts, NULL, "opts", 1120 "Instruction Tracing options", 1121 itrace_parse_synth_opts), 1122 OPT_BOOLEAN(0, "full-source-path", &srcline_full_filename, 1123 "Show full source file name path for source lines"), 1124 OPT_BOOLEAN(0, "show-ref-call-graph", &symbol_conf.show_ref_callgraph, 1125 "Show callgraph from reference event"), 1126 OPT_INTEGER(0, "socket-filter", &report.socket_filter, 1127 "only show processor socket that match with this filter"), 1128 OPT_BOOLEAN(0, "raw-trace", &symbol_conf.raw_trace, 1129 "Show raw trace event output (do not use print fmt or plugins)"), 1130 OPT_BOOLEAN(0, "hierarchy", &symbol_conf.report_hierarchy, 1131 "Show entries in a hierarchy"), 1132 OPT_CALLBACK_DEFAULT(0, "stdio-color", NULL, "mode", 1133 "'always' (default), 'never' or 'auto' only applicable to --stdio mode", 1134 stdio__config_color, "always"), 1135 OPT_STRING(0, "time", &report.time_str, "str", 1136 "Time span of interest (start,stop)"), 1137 OPT_BOOLEAN(0, "inline", &symbol_conf.inline_name, 1138 "Show inline function"), 1139 OPT_END() 1140 }; 1141 struct perf_data data = { 1142 .mode = PERF_DATA_MODE_READ, 1143 }; 1144 int ret = hists__init(); 1145 1146 if (ret < 0) 1147 return ret; 1148 1149 ret = perf_config(report__config, &report); 1150 if (ret) 1151 return ret; 1152 1153 argc = parse_options(argc, argv, options, report_usage, 0); 1154 if (argc) { 1155 /* 1156 * Special case: if there's an argument left then assume that 1157 * it's a symbol filter: 1158 */ 1159 if (argc > 1) 1160 usage_with_options(report_usage, options); 1161 1162 report.symbol_filter_str = argv[0]; 1163 } 1164 1165 if (report.mmaps_mode) 1166 report.tasks_mode = true; 1167 1168 if (quiet) 1169 perf_quiet_option(); 1170 1171 if (symbol_conf.vmlinux_name && 1172 access(symbol_conf.vmlinux_name, R_OK)) { 1173 pr_err("Invalid file: %s\n", symbol_conf.vmlinux_name); 1174 return -EINVAL; 1175 } 1176 if (symbol_conf.kallsyms_name && 1177 access(symbol_conf.kallsyms_name, R_OK)) { 1178 pr_err("Invalid file: %s\n", symbol_conf.kallsyms_name); 1179 return -EINVAL; 1180 } 1181 1182 if (report.inverted_callchain) 1183 callchain_param.order = ORDER_CALLER; 1184 if (symbol_conf.cumulate_callchain && !callchain_param.order_set) 1185 callchain_param.order = ORDER_CALLER; 1186 1187 if (itrace_synth_opts.callchain && 1188 (int)itrace_synth_opts.callchain_sz > report.max_stack) 1189 report.max_stack = itrace_synth_opts.callchain_sz; 1190 1191 if (!input_name || !strlen(input_name)) { 1192 if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode)) 1193 input_name = "-"; 1194 else 1195 input_name = "perf.data"; 1196 } 1197 1198 data.file.path = input_name; 1199 data.force = symbol_conf.force; 1200 1201 repeat: 1202 session = perf_session__new(&data, false, &report.tool); 1203 if (session == NULL) 1204 return -1; 1205 1206 if (report.queue_size) { 1207 ordered_events__set_alloc_size(&session->ordered_events, 1208 report.queue_size); 1209 } 1210 1211 session->itrace_synth_opts = &itrace_synth_opts; 1212 1213 report.session = session; 1214 1215 has_br_stack = perf_header__has_feat(&session->header, 1216 HEADER_BRANCH_STACK); 1217 1218 setup_forced_leader(&report, session->evlist); 1219 1220 if (itrace_synth_opts.last_branch) 1221 has_br_stack = true; 1222 1223 if (has_br_stack && branch_call_mode) 1224 symbol_conf.show_branchflag_count = true; 1225 1226 memset(&report.brtype_stat, 0, sizeof(struct branch_type_stat)); 1227 1228 /* 1229 * Branch mode is a tristate: 1230 * -1 means default, so decide based on the file having branch data. 1231 * 0/1 means the user chose a mode. 1232 */ 1233 if (((branch_mode == -1 && has_br_stack) || branch_mode == 1) && 1234 !branch_call_mode) { 1235 sort__mode = SORT_MODE__BRANCH; 1236 symbol_conf.cumulate_callchain = false; 1237 } 1238 if (branch_call_mode) { 1239 callchain_param.key = CCKEY_ADDRESS; 1240 callchain_param.branch_callstack = 1; 1241 symbol_conf.use_callchain = true; 1242 callchain_register_param(&callchain_param); 1243 if (sort_order == NULL) 1244 sort_order = "srcline,symbol,dso"; 1245 } 1246 1247 if (report.mem_mode) { 1248 if (sort__mode == SORT_MODE__BRANCH) { 1249 pr_err("branch and mem mode incompatible\n"); 1250 goto error; 1251 } 1252 sort__mode = SORT_MODE__MEMORY; 1253 symbol_conf.cumulate_callchain = false; 1254 } 1255 1256 if (symbol_conf.report_hierarchy) { 1257 /* disable incompatible options */ 1258 symbol_conf.cumulate_callchain = false; 1259 1260 if (field_order) { 1261 pr_err("Error: --hierarchy and --fields options cannot be used together\n"); 1262 parse_options_usage(report_usage, options, "F", 1); 1263 parse_options_usage(NULL, options, "hierarchy", 0); 1264 goto error; 1265 } 1266 1267 perf_hpp_list.need_collapse = true; 1268 } 1269 1270 if (report.use_stdio) 1271 use_browser = 0; 1272 else if (report.use_tui) 1273 use_browser = 1; 1274 else if (report.use_gtk) 1275 use_browser = 2; 1276 1277 /* Force tty output for header output and per-thread stat. */ 1278 if (report.header || report.header_only || report.show_threads) 1279 use_browser = 0; 1280 if (report.header || report.header_only) 1281 report.tool.show_feat_hdr = SHOW_FEAT_HEADER; 1282 if (report.show_full_info) 1283 report.tool.show_feat_hdr = SHOW_FEAT_HEADER_FULL_INFO; 1284 if (report.stats_mode || report.tasks_mode) 1285 use_browser = 0; 1286 if (report.stats_mode && report.tasks_mode) { 1287 pr_err("Error: --tasks and --mmaps can't be used together with --stats\n"); 1288 goto error; 1289 } 1290 1291 if (strcmp(input_name, "-") != 0) 1292 setup_browser(true); 1293 else 1294 use_browser = 0; 1295 1296 if (setup_sorting(session->evlist) < 0) { 1297 if (sort_order) 1298 parse_options_usage(report_usage, options, "s", 1); 1299 if (field_order) 1300 parse_options_usage(sort_order ? NULL : report_usage, 1301 options, "F", 1); 1302 goto error; 1303 } 1304 1305 if ((report.header || report.header_only) && !quiet) { 1306 perf_session__fprintf_info(session, stdout, 1307 report.show_full_info); 1308 if (report.header_only) { 1309 ret = 0; 1310 goto error; 1311 } 1312 } else if (use_browser == 0 && !quiet && 1313 !report.stats_mode && !report.tasks_mode) { 1314 fputs("# To display the perf.data header info, please use --header/--header-only options.\n#\n", 1315 stdout); 1316 } 1317 1318 /* 1319 * Only in the TUI browser we are doing integrated annotation, 1320 * so don't allocate extra space that won't be used in the stdio 1321 * implementation. 1322 */ 1323 if (ui__has_annotation()) { 1324 ret = symbol__annotation_init(); 1325 if (ret < 0) 1326 goto error; 1327 /* 1328 * For searching by name on the "Browse map details". 1329 * providing it only in verbose mode not to bloat too 1330 * much struct symbol. 1331 */ 1332 if (verbose > 0) { 1333 /* 1334 * XXX: Need to provide a less kludgy way to ask for 1335 * more space per symbol, the u32 is for the index on 1336 * the ui browser. 1337 * See symbol__browser_index. 1338 */ 1339 symbol_conf.priv_size += sizeof(u32); 1340 symbol_conf.sort_by_name = true; 1341 } 1342 annotation_config__init(); 1343 } 1344 1345 if (symbol__init(&session->header.env) < 0) 1346 goto error; 1347 1348 report.ptime_range = perf_time__range_alloc(report.time_str, 1349 &report.range_size); 1350 if (!report.ptime_range) { 1351 ret = -ENOMEM; 1352 goto error; 1353 } 1354 1355 if (perf_time__parse_str(report.ptime_range, report.time_str) != 0) { 1356 if (session->evlist->first_sample_time == 0 && 1357 session->evlist->last_sample_time == 0) { 1358 pr_err("HINT: no first/last sample time found in perf data.\n" 1359 "Please use latest perf binary to execute 'perf record'\n" 1360 "(if '--buildid-all' is enabled, please set '--timestamp-boundary').\n"); 1361 ret = -EINVAL; 1362 goto error; 1363 } 1364 1365 report.range_num = perf_time__percent_parse_str( 1366 report.ptime_range, report.range_size, 1367 report.time_str, 1368 session->evlist->first_sample_time, 1369 session->evlist->last_sample_time); 1370 1371 if (report.range_num < 0) { 1372 pr_err("Invalid time string\n"); 1373 ret = -EINVAL; 1374 goto error; 1375 } 1376 } else { 1377 report.range_num = 1; 1378 } 1379 1380 if (session->tevent.pevent && 1381 pevent_set_function_resolver(session->tevent.pevent, 1382 machine__resolve_kernel_addr, 1383 &session->machines.host) < 0) { 1384 pr_err("%s: failed to set libtraceevent function resolver\n", 1385 __func__); 1386 return -1; 1387 } 1388 1389 sort__setup_elide(stdout); 1390 1391 ret = __cmd_report(&report); 1392 if (ret == K_SWITCH_INPUT_DATA) { 1393 perf_session__delete(session); 1394 goto repeat; 1395 } else 1396 ret = 0; 1397 1398 error: 1399 zfree(&report.ptime_range); 1400 1401 perf_session__delete(session); 1402 return ret; 1403 } 1404