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