tools/perf/builtin-report.c

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