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/map.h"
  20 #include "util/symbol.h"
  21 #include "util/callchain.h"
  22 #include "util/values.h"
  23
  24 #include "perf.h"
  25 #include "util/debug.h"
  26 #include "util/evlist.h"
  27 #include "util/evsel.h"
  28 #include "util/header.h"
  29 #include "util/session.h"
  30 #include "util/tool.h"
  31
  32 #include <subcmd/parse-options.h>
  33 #include <subcmd/exec-cmd.h>
  34 #include "util/parse-events.h"
  35
  36 #include "util/thread.h"
  37 #include "util/sort.h"
  38 #include "util/hist.h"
  39 #include "util/data.h"
  40 #include "arch/common.h"
  41 #include "util/time-utils.h"
  42 #include "util/auxtrace.h"
  43 #include "util/units.h"
  44 #include "util/branch.h"
  45
  46 #include <dlfcn.h>
  47 #include <errno.h>
  48 #include <inttypes.h>
  49 #include <regex.h>
  50 #include <signal.h>
  51 #include <linux/bitmap.h>
  52 #include <linux/stringify.h>
  53 #include <sys/types.h>
  54 #include <sys/stat.h>
  55 #include <unistd.h>
  56 #include <linux/mman.h>
  57
  58 struct report {
  59         struct perf_tool        tool;
  60         struct perf_session     *session;
  61         bool                    use_tui, use_gtk, use_stdio;
  62         bool                    show_full_info;
  63         bool                    show_threads;
  64         bool                    inverted_callchain;
  65         bool                    mem_mode;
  66         bool                    stats_mode;
  67         bool                    tasks_mode;
  68         bool                    mmaps_mode;
  69         bool                    header;
  70         bool                    header_only;
  71         bool                    nonany_branch_mode;
  72         bool                    group_set;
  73         int                     max_stack;
  74         struct perf_read_values show_threads_values;
  75         struct annotation_options annotation_opts;
  76         const char              *pretty_printing_style;
  77         const char              *cpu_list;
  78         const char              *symbol_filter_str;
  79         const char              *time_str;
  80         struct perf_time_interval *ptime_range;
  81         int                     range_size;
  82         int                     range_num;
  83         float                   min_percent;
  84         u64                     nr_entries;
  85         u64                     queue_size;
  86         int                     socket_filter;
  87         DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
  88         struct branch_type_stat brtype_stat;
  89         bool                    symbol_ipc;
  90 };
  91
  92 static int report__config(const char *var, const char *value, void *cb)
  93 {
  94         struct report *rep = cb;
  95
  96         if (!strcmp(var, "report.group")) {
  97                 symbol_conf.event_group = perf_config_bool(var, value);
  98                 return 0;
  99         }
 100         if (!strcmp(var, "report.percent-limit")) {
 101                 double pcnt = strtof(value, NULL);
 102
 103                 rep->min_percent = pcnt;
 104                 callchain_param.min_percent = pcnt;
 105                 return 0;
 106         }
 107         if (!strcmp(var, "report.children")) {
 108                 symbol_conf.cumulate_callchain = perf_config_bool(var, value);
 109                 return 0;
 110         }
 111         if (!strcmp(var, "report.queue-size"))
 112                 return perf_config_u64(&rep->queue_size, var, value);
 113
 114         if (!strcmp(var, "report.sort_order")) {
 115                 default_sort_order = strdup(value);
 116                 return 0;
 117         }
 118
 119         return 0;
 120 }
 121
 122 static int hist_iter__report_callback(struct hist_entry_iter *iter,
 123                                       struct addr_location *al, bool single,
 124                                       void *arg)
 125 {
 126         int err = 0;
 127         struct report *rep = arg;
 128         struct hist_entry *he = iter->he;
 129         struct perf_evsel *evsel = iter->evsel;
 130         struct perf_sample *sample = iter->sample;
 131         struct mem_info *mi;
 132         struct branch_info *bi;
 133
 134         if (!ui__has_annotation() && !rep->symbol_ipc)
 135                 return 0;
 136
 137         hist__account_cycles(sample->branch_stack, al, sample,
 138                              rep->nonany_branch_mode);
 139
 140         if (sort__mode == SORT_MODE__BRANCH) {
 141                 bi = he->branch_info;
 142                 err = addr_map_symbol__inc_samples(&bi->from, sample, evsel);
 143                 if (err)
 144                         goto out;
 145
 146                 err = addr_map_symbol__inc_samples(&bi->to, sample, evsel);
 147
 148         } else if (rep->mem_mode) {
 149                 mi = he->mem_info;
 150                 err = addr_map_symbol__inc_samples(&mi->daddr, sample, evsel);
 151                 if (err)
 152                         goto out;
 153
 154                 err = hist_entry__inc_addr_samples(he, sample, evsel, al->addr);
 155
 156         } else if (symbol_conf.cumulate_callchain) {
 157                 if (single)
 158                         err = hist_entry__inc_addr_samples(he, sample, evsel, al->addr);
 159         } else {
 160                 err = hist_entry__inc_addr_samples(he, sample, evsel, al->addr);
 161         }
 162
 163 out:
 164         return err;
 165 }
 166
 167 static int hist_iter__branch_callback(struct hist_entry_iter *iter,
 168                                       struct addr_location *al __maybe_unused,
 169                                       bool single __maybe_unused,
 170                                       void *arg)
 171 {
 172         struct hist_entry *he = iter->he;
 173         struct report *rep = arg;
 174         struct branch_info *bi;
 175         struct perf_sample *sample = iter->sample;
 176         struct perf_evsel *evsel = iter->evsel;
 177         int err;
 178
 179         if (!ui__has_annotation() && !rep->symbol_ipc)
 180                 return 0;
 181
 182         hist__account_cycles(sample->branch_stack, al, sample,
 183                              rep->nonany_branch_mode);
 184
 185         bi = he->branch_info;
 186         err = addr_map_symbol__inc_samples(&bi->from, sample, evsel);
 187         if (err)
 188                 goto out;
 189
 190         err = addr_map_symbol__inc_samples(&bi->to, sample, evsel);
 191
 192         branch_type_count(&rep->brtype_stat, &bi->flags,
 193                           bi->from.addr, bi->to.addr);
 194
 195 out:
 196         return err;
 197 }
 198
 199 static void setup_forced_leader(struct report *report,
 200                                 struct perf_evlist *evlist)
 201 {
 202         if (report->group_set)
 203                 perf_evlist__force_leader(evlist);
 204 }
 205
 206 static int process_feature_event(struct perf_session *session,
 207                                  union perf_event *event)
 208 {
 209         struct report *rep = container_of(session->tool, struct report, tool);
 210
 211         if (event->feat.feat_id < HEADER_LAST_FEATURE)
 212                 return perf_event__process_feature(session, event);
 213
 214         if (event->feat.feat_id != HEADER_LAST_FEATURE) {
 215                 pr_err("failed: wrong feature ID: %" PRIu64 "\n",
 216                        event->feat.feat_id);
 217                 return -1;
 218         }
 219
 220         /*
 221          * (feat_id = HEADER_LAST_FEATURE) is the end marker which
 222          * means all features are received, now we can force the
 223          * group if needed.
 224          */
 225         setup_forced_leader(rep, session->evlist);
 226         return 0;
 227 }
 228
 229 static int process_sample_event(struct perf_tool *tool,
 230                                 union perf_event *event,
 231                                 struct perf_sample *sample,
 232                                 struct perf_evsel *evsel,
 233                                 struct machine *machine)
 234 {
 235         struct report *rep = container_of(tool, struct report, tool);
 236         struct addr_location al;
 237         struct hist_entry_iter iter = {
 238                 .evsel                  = evsel,
 239                 .sample                 = sample,
 240                 .hide_unresolved        = symbol_conf.hide_unresolved,
 241                 .add_entry_cb           = hist_iter__report_callback,
 242         };
 243         int ret = 0;
 244
 245         if (perf_time__ranges_skip_sample(rep->ptime_range, rep->range_num,
 246                                           sample->time)) {
 247                 return 0;
 248         }
 249
 250         if (machine__resolve(machine, &al, sample) < 0) {
 251                 pr_debug("problem processing %d event, skipping it.\n",
 252                          event->header.type);
 253                 return -1;
 254         }
 255
 256         if (symbol_conf.hide_unresolved && al.sym == NULL)
 257                 goto out_put;
 258
 259         if (rep->cpu_list && !test_bit(sample->cpu, rep->cpu_bitmap))
 260                 goto out_put;
 261
 262         if (sort__mode == SORT_MODE__BRANCH) {
 263                 /*
 264                  * A non-synthesized event might not have a branch stack if
 265                  * branch stacks have been synthesized (using itrace options).
 266                  */
 267                 if (!sample->branch_stack)
 268                         goto out_put;
 269
 270                 iter.add_entry_cb = hist_iter__branch_callback;
 271                 iter.ops = &hist_iter_branch;
 272         } else if (rep->mem_mode) {
 273                 iter.ops = &hist_iter_mem;
 274         } else if (symbol_conf.cumulate_callchain) {
 275                 iter.ops = &hist_iter_cumulative;
 276         } else {
 277                 iter.ops = &hist_iter_normal;
 278         }
 279
 280         if (al.map != NULL)
 281                 al.map->dso->hit = 1;
 282
 283         ret = hist_entry_iter__add(&iter, &al, rep->max_stack, rep);
 284         if (ret < 0)
 285                 pr_debug("problem adding hist entry, skipping event\n");
 286 out_put:
 287         addr_location__put(&al);
 288         return ret;
 289 }
 290
 291 static int process_read_event(struct perf_tool *tool,
 292                               union perf_event *event,
 293                               struct perf_sample *sample __maybe_unused,
 294                               struct perf_evsel *evsel,
 295                               struct machine *machine __maybe_unused)
 296 {
 297         struct report *rep = container_of(tool, struct report, tool);
 298
 299         if (rep->show_threads) {
 300                 const char *name = evsel ? perf_evsel__name(evsel) : "unknown";
 301                 int err = perf_read_values_add_value(&rep->show_threads_values,
 302                                            event->read.pid, event->read.tid,
 303                                            evsel->idx,
 304                                            name,
 305                                            event->read.value);
 306
 307                 if (err)
 308                         return err;
 309         }
 310
 311         return 0;
 312 }
 313
 314 /* For pipe mode, sample_type is not currently set */
 315 static int report__setup_sample_type(struct report *rep)
 316 {
 317         struct perf_session *session = rep->session;
 318         u64 sample_type = perf_evlist__combined_sample_type(session->evlist);
 319         bool is_pipe = perf_data__is_pipe(session->data);
 320
 321         if (session->itrace_synth_opts->callchain ||
 322             (!is_pipe &&
 323              perf_header__has_feat(&session->header, HEADER_AUXTRACE) &&
 324              !session->itrace_synth_opts->set))
 325                 sample_type |= PERF_SAMPLE_CALLCHAIN;
 326
 327         if (session->itrace_synth_opts->last_branch)
 328                 sample_type |= PERF_SAMPLE_BRANCH_STACK;
 329
 330         if (!is_pipe && !(sample_type & PERF_SAMPLE_CALLCHAIN)) {
 331                 if (perf_hpp_list.parent) {
 332                         ui__error("Selected --sort parent, but no "
 333                                     "callchain data. Did you call "
 334                                     "'perf record' without -g?\n");
 335                         return -EINVAL;
 336                 }
 337                 if (symbol_conf.use_callchain &&
 338                         !symbol_conf.show_branchflag_count) {
 339                         ui__error("Selected -g or --branch-history.\n"
 340                                   "But no callchain or branch data.\n"
 341                                   "Did you call 'perf record' without -g or -b?\n");
 342                         return -1;
 343                 }
 344         } else if (!callchain_param.enabled &&
 345                    callchain_param.mode != CHAIN_NONE &&
 346                    !symbol_conf.use_callchain) {
 347                         symbol_conf.use_callchain = true;
 348                         if (callchain_register_param(&callchain_param) < 0) {
 349                                 ui__error("Can't register callchain params.\n");
 350                                 return -EINVAL;
 351                         }
 352         }
 353
 354         if (symbol_conf.cumulate_callchain) {
 355                 /* Silently ignore if callchain is missing */
 356                 if (!(sample_type & PERF_SAMPLE_CALLCHAIN)) {
 357                         symbol_conf.cumulate_callchain = false;
 358                         perf_hpp__cancel_cumulate();
 359                 }
 360         }
 361
 362         if (sort__mode == SORT_MODE__BRANCH) {
 363                 if (!is_pipe &&
 364                     !(sample_type & PERF_SAMPLE_BRANCH_STACK)) {
 365                         ui__error("Selected -b but no branch data. "
 366                                   "Did you call perf record without -b?\n");
 367                         return -1;
 368                 }
 369         }
 370
 371         if (symbol_conf.use_callchain || symbol_conf.cumulate_callchain) {
 372                 if ((sample_type & PERF_SAMPLE_REGS_USER) &&
 373                     (sample_type & PERF_SAMPLE_STACK_USER)) {
 374                         callchain_param.record_mode = CALLCHAIN_DWARF;
 375                         dwarf_callchain_users = true;
 376                 } else if (sample_type & PERF_SAMPLE_BRANCH_STACK)
 377                         callchain_param.record_mode = CALLCHAIN_LBR;
 378                 else
 379                         callchain_param.record_mode = CALLCHAIN_FP;
 380         }
 381
 382         /* ??? handle more cases than just ANY? */
 383         if (!(perf_evlist__combined_branch_type(session->evlist) &
 384                                 PERF_SAMPLE_BRANCH_ANY))
 385                 rep->nonany_branch_mode = true;
 386
 387         return 0;
 388 }
 389
 390 static void sig_handler(int sig __maybe_unused)
 391 {
 392         session_done = 1;
 393 }
 394
 395 static size_t hists__fprintf_nr_sample_events(struct hists *hists, struct report *rep,
 396                                               const char *evname, FILE *fp)
 397 {
 398         size_t ret;
 399         char unit;
 400         unsigned long nr_samples = hists->stats.nr_events[PERF_RECORD_SAMPLE];
 401         u64 nr_events = hists->stats.total_period;
 402         struct perf_evsel *evsel = hists_to_evsel(hists);
 403         char buf[512];
 404         size_t size = sizeof(buf);
 405         int socked_id = hists->socket_filter;
 406
 407         if (quiet)
 408                 return 0;
 409
 410         if (symbol_conf.filter_relative) {
 411                 nr_samples = hists->stats.nr_non_filtered_samples;
 412                 nr_events = hists->stats.total_non_filtered_period;
 413         }
 414
 415         if (perf_evsel__is_group_event(evsel)) {
 416                 struct perf_evsel *pos;
 417
 418                 perf_evsel__group_desc(evsel, buf, size);
 419                 evname = buf;
 420
 421                 for_each_group_member(pos, evsel) {
 422                         const struct hists *pos_hists = evsel__hists(pos);
 423
 424                         if (symbol_conf.filter_relative) {
 425                                 nr_samples += pos_hists->stats.nr_non_filtered_samples;
 426                                 nr_events += pos_hists->stats.total_non_filtered_period;
 427                         } else {
 428                                 nr_samples += pos_hists->stats.nr_events[PERF_RECORD_SAMPLE];
 429                                 nr_events += pos_hists->stats.total_period;
 430                         }
 431                 }
 432         }
 433
 434         nr_samples = convert_unit(nr_samples, &unit);
 435         ret = fprintf(fp, "# Samples: %lu%c", nr_samples, unit);
 436         if (evname != NULL) {
 437                 ret += fprintf(fp, " of event%s '%s'",
 438                                evsel->nr_members > 1 ? "s" : "", evname);
 439         }
 440
 441         if (rep->time_str)
 442                 ret += fprintf(fp, " (time slices: %s)", rep->time_str);
 443
 444         if (symbol_conf.show_ref_callgraph &&
 445             strstr(evname, "call-graph=no")) {
 446                 ret += fprintf(fp, ", show reference callgraph");
 447         }
 448
 449         if (rep->mem_mode) {
 450                 ret += fprintf(fp, "\n# Total weight : %" PRIu64, nr_events);
 451                 ret += fprintf(fp, "\n# Sort order   : %s", sort_order ? : default_mem_sort_order);
 452         } else
 453                 ret += fprintf(fp, "\n# Event count (approx.): %" PRIu64, nr_events);
 454
 455         if (socked_id > -1)
 456                 ret += fprintf(fp, "\n# Processor Socket: %d", socked_id);
 457
 458         return ret + fprintf(fp, "\n#\n");
 459 }
 460
 461 static int perf_evlist__tty_browse_hists(struct perf_evlist *evlist,
 462                                          struct report *rep,
 463                                          const char *help)
 464 {
 465         struct perf_evsel *pos;
 466
 467         if (!quiet) {
 468                 fprintf(stdout, "#\n# Total Lost Samples: %" PRIu64 "\n#\n",
 469                         evlist->stats.total_lost_samples);
 470         }
 471
 472         evlist__for_each_entry(evlist, pos) {
 473                 struct hists *hists = evsel__hists(pos);
 474                 const char *evname = perf_evsel__name(pos);
 475
 476                 if (symbol_conf.event_group &&
 477                     !perf_evsel__is_group_leader(pos))
 478                         continue;
 479
 480                 hists__fprintf_nr_sample_events(hists, rep, evname, stdout);
 481                 hists__fprintf(hists, !quiet, 0, 0, rep->min_percent, stdout,
 482                                !(symbol_conf.use_callchain ||
 483                                  symbol_conf.show_branchflag_count));
 484                 fprintf(stdout, "\n\n");
 485         }
 486
 487         if (!quiet)
 488                 fprintf(stdout, "#\n# (%s)\n#\n", help);
 489
 490         if (rep->show_threads) {
 491                 bool style = !strcmp(rep->pretty_printing_style, "raw");
 492                 perf_read_values_display(stdout, &rep->show_threads_values,
 493                                          style);
 494                 perf_read_values_destroy(&rep->show_threads_values);
 495         }
 496
 497         if (sort__mode == SORT_MODE__BRANCH)
 498                 branch_type_stat_display(stdout, &rep->brtype_stat);
 499
 500         return 0;
 501 }
 502
 503 static void report__warn_kptr_restrict(const struct report *rep)
 504 {
 505         struct map *kernel_map = machine__kernel_map(&rep->session->machines.host);
 506         struct kmap *kernel_kmap = kernel_map ? map__kmap(kernel_map) : NULL;
 507
 508         if (perf_evlist__exclude_kernel(rep->session->evlist))
 509                 return;
 510
 511         if (kernel_map == NULL ||
 512             (kernel_map->dso->hit &&
 513              (kernel_kmap->ref_reloc_sym == NULL ||
 514               kernel_kmap->ref_reloc_sym->addr == 0))) {
 515                 const char *desc =
 516                     "As no suitable kallsyms nor vmlinux was found, kernel samples\n"
 517                     "can't be resolved.";
 518
 519                 if (kernel_map && map__has_symbols(kernel_map)) {
 520                         desc = "If some relocation was applied (e.g. "
 521                                "kexec) symbols may be misresolved.";
 522                 }
 523
 524                 ui__warning(
 525 "Kernel address maps (/proc/{kallsyms,modules}) were restricted.\n\n"
 526 "Check /proc/sys/kernel/kptr_restrict before running 'perf record'.\n\n%s\n\n"
 527 "Samples in kernel modules can't be resolved as well.\n\n",
 528                 desc);
 529         }
 530 }
 531
 532 static int report__gtk_browse_hists(struct report *rep, const char *help)
 533 {
 534         int (*hist_browser)(struct perf_evlist *evlist, const char *help,
 535                             struct hist_browser_timer *timer, float min_pcnt);
 536
 537         hist_browser = dlsym(perf_gtk_handle, "perf_evlist__gtk_browse_hists");
 538
 539         if (hist_browser == NULL) {
 540                 ui__error("GTK browser not found!\n");
 541                 return -1;
 542         }
 543
 544         return hist_browser(rep->session->evlist, help, NULL, rep->min_percent);
 545 }
 546
 547 static int report__browse_hists(struct report *rep)
 548 {
 549         int ret;
 550         struct perf_session *session = rep->session;
 551         struct perf_evlist *evlist = session->evlist;
 552         const char *help = perf_tip(system_path(TIPDIR));
 553
 554         if (help == NULL) {
 555                 /* fallback for people who don't install perf ;-) */
 556                 help = perf_tip(DOCDIR);
 557                 if (help == NULL)
 558                         help = "Cannot load tips.txt file, please install perf!";
 559         }
 560
 561         switch (use_browser) {
 562         case 1:
 563                 ret = perf_evlist__tui_browse_hists(evlist, help, NULL,
 564                                                     rep->min_percent,
 565                                                     &session->header.env,
 566                                                     true, &rep->annotation_opts);
 567                 /*
 568                  * Usually "ret" is the last pressed key, and we only
 569                  * care if the key notifies us to switch data file.
 570                  */
 571                 if (ret != K_SWITCH_INPUT_DATA)
 572                         ret = 0;
 573                 break;
 574         case 2:
 575                 ret = report__gtk_browse_hists(rep, help);
 576                 break;
 577         default:
 578                 ret = perf_evlist__tty_browse_hists(evlist, rep, help);
 579                 break;
 580         }
 581
 582         return ret;
 583 }
 584
 585 static int report__collapse_hists(struct report *rep)
 586 {
 587         struct ui_progress prog;
 588         struct perf_evsel *pos;
 589         int ret = 0;
 590
 591         ui_progress__init(&prog, rep->nr_entries, "Merging related events...");
 592
 593         evlist__for_each_entry(rep->session->evlist, pos) {
 594                 struct hists *hists = evsel__hists(pos);
 595
 596                 if (pos->idx == 0)
 597                         hists->symbol_filter_str = rep->symbol_filter_str;
 598
 599                 hists->socket_filter = rep->socket_filter;
 600
 601                 ret = hists__collapse_resort(hists, &prog);
 602                 if (ret < 0)
 603                         break;
 604
 605                 /* Non-group events are considered as leader */
 606                 if (symbol_conf.event_group &&
 607                     !perf_evsel__is_group_leader(pos)) {
 608                         struct hists *leader_hists = evsel__hists(pos->leader);
 609
 610                         hists__match(leader_hists, hists);
 611                         hists__link(leader_hists, hists);
 612                 }
 613         }
 614
 615         ui_progress__finish();
 616         return ret;
 617 }
 618
 619 static void report__output_resort(struct report *rep)
 620 {
 621         struct ui_progress prog;
 622         struct perf_evsel *pos;
 623
 624         ui_progress__init(&prog, rep->nr_entries, "Sorting events for output...");
 625
 626         evlist__for_each_entry(rep->session->evlist, pos)
 627                 perf_evsel__output_resort(pos, &prog);
 628
 629         ui_progress__finish();
 630 }
 631
 632 static void stats_setup(struct report *rep)
 633 {
 634         memset(&rep->tool, 0, sizeof(rep->tool));
 635         rep->tool.no_warn = true;
 636 }
 637
 638 static int stats_print(struct report *rep)
 639 {
 640         struct perf_session *session = rep->session;
 641
 642         perf_session__fprintf_nr_events(session, stdout);
 643         return 0;
 644 }
 645
 646 static void tasks_setup(struct report *rep)
 647 {
 648         memset(&rep->tool, 0, sizeof(rep->tool));
 649         rep->tool.ordered_events = true;
 650         if (rep->mmaps_mode) {
 651                 rep->tool.mmap = perf_event__process_mmap;
 652                 rep->tool.mmap2 = perf_event__process_mmap2;
 653         }
 654         rep->tool.comm = perf_event__process_comm;
 655         rep->tool.exit = perf_event__process_exit;
 656         rep->tool.fork = perf_event__process_fork;
 657         rep->tool.no_warn = true;
 658 }
 659
 660 struct task {
 661         struct thread           *thread;
 662         struct list_head         list;
 663         struct list_head         children;
 664 };
 665
 666 static struct task *tasks_list(struct task *task, struct machine *machine)
 667 {
 668         struct thread *parent_thread, *thread = task->thread;
 669         struct task   *parent_task;
 670
 671         /* Already listed. */
 672         if (!list_empty(&task->list))
 673                 return NULL;
 674
 675         /* Last one in the chain. */
 676         if (thread->ppid == -1)
 677                 return task;
 678
 679         parent_thread = machine__find_thread(machine, -1, thread->ppid);
 680         if (!parent_thread)
 681                 return ERR_PTR(-ENOENT);
 682
 683         parent_task = thread__priv(parent_thread);
 684         list_add_tail(&task->list, &parent_task->children);
 685         return tasks_list(parent_task, machine);
 686 }
 687
 688 static size_t maps__fprintf_task(struct maps *maps, int indent, FILE *fp)
 689 {
 690         size_t printed = 0;
 691         struct rb_node *nd;
 692
 693         for (nd = rb_first(&maps->entries); nd; nd = rb_next(nd)) {
 694                 struct map *map = rb_entry(nd, struct map, rb_node);
 695
 696                 printed += fprintf(fp, "%*s  %" PRIx64 "-%" PRIx64 " %c%c%c%c %08" PRIx64 " %" PRIu64 " %s\n",
 697                                    indent, "", map->start, map->end,
 698                                    map->prot & PROT_READ ? 'r' : '-',
 699                                    map->prot & PROT_WRITE ? 'w' : '-',
 700                                    map->prot & PROT_EXEC ? 'x' : '-',
 701                                    map->flags & MAP_SHARED ? 's' : 'p',
 702                                    map->pgoff,
 703                                    map->ino, map->dso->name);
 704         }
 705
 706         return printed;
 707 }
 708
 709 static int map_groups__fprintf_task(struct map_groups *mg, int indent, FILE *fp)
 710 {
 711         return maps__fprintf_task(&mg->maps, indent, fp);
 712 }
 713
 714 static void task__print_level(struct task *task, FILE *fp, int level)
 715 {
 716         struct thread *thread = task->thread;
 717         struct task *child;
 718         int comm_indent = fprintf(fp, "  %8d %8d %8d |%*s",
 719                                   thread->pid_, thread->tid, thread->ppid,
 720                                   level, "");
 721
 722         fprintf(fp, "%s\n", thread__comm_str(thread));
 723
 724         map_groups__fprintf_task(thread->mg, comm_indent, fp);
 725
 726         if (!list_empty(&task->children)) {
 727                 list_for_each_entry(child, &task->children, list)
 728                         task__print_level(child, fp, level + 1);
 729         }
 730 }
 731
 732 static int tasks_print(struct report *rep, FILE *fp)
 733 {
 734         struct perf_session *session = rep->session;
 735         struct machine      *machine = &session->machines.host;
 736         struct task *tasks, *task;
 737         unsigned int nr = 0, itask = 0, i;
 738         struct rb_node *nd;
 739         LIST_HEAD(list);
 740
 741         /*
 742          * No locking needed while accessing machine->threads,
 743          * because --tasks is single threaded command.
 744          */
 745
 746         /* Count all the threads. */
 747         for (i = 0; i < THREADS__TABLE_SIZE; i++)
 748                 nr += machine->threads[i].nr;
 749
 750         tasks = malloc(sizeof(*tasks) * nr);
 751         if (!tasks)
 752                 return -ENOMEM;
 753
 754         for (i = 0; i < THREADS__TABLE_SIZE; i++) {
 755                 struct threads *threads = &machine->threads[i];
 756
 757                 for (nd = rb_first_cached(&threads->entries); nd;
 758                      nd = rb_next(nd)) {
 759                         task = tasks + itask++;
 760
 761                         task->thread = rb_entry(nd, struct thread, rb_node);
 762                         INIT_LIST_HEAD(&task->children);
 763                         INIT_LIST_HEAD(&task->list);
 764                         thread__set_priv(task->thread, task);
 765                 }
 766         }
 767
 768         /*
 769          * Iterate every task down to the unprocessed parent
 770          * and link all in task children list. Task with no
 771          * parent is added into 'list'.
 772          */
 773         for (itask = 0; itask < nr; itask++) {
 774                 task = tasks + itask;
 775
 776                 if (!list_empty(&task->list))
 777                         continue;
 778
 779                 task = tasks_list(task, machine);
 780                 if (IS_ERR(task)) {
 781                         pr_err("Error: failed to process tasks\n");
 782                         free(tasks);
 783                         return PTR_ERR(task);
 784                 }
 785
 786                 if (task)
 787                         list_add_tail(&task->list, &list);
 788         }
 789
 790         fprintf(fp, "# %8s %8s %8s  %s\n", "pid", "tid", "ppid", "comm");
 791
 792         list_for_each_entry(task, &list, list)
 793                 task__print_level(task, fp, 0);
 794
 795         free(tasks);
 796         return 0;
 797 }
 798
 799 static int __cmd_report(struct report *rep)
 800 {
 801         int ret;
 802         struct perf_session *session = rep->session;
 803         struct perf_evsel *pos;
 804         struct perf_data *data = session->data;
 805
 806         signal(SIGINT, sig_handler);
 807
 808         if (rep->cpu_list) {
 809                 ret = perf_session__cpu_bitmap(session, rep->cpu_list,
 810                                                rep->cpu_bitmap);
 811                 if (ret) {
 812                         ui__error("failed to set cpu bitmap\n");
 813                         return ret;
 814                 }
 815                 session->itrace_synth_opts->cpu_bitmap = rep->cpu_bitmap;
 816         }
 817
 818         if (rep->show_threads) {
 819                 ret = perf_read_values_init(&rep->show_threads_values);
 820                 if (ret)
 821                         return ret;
 822         }
 823
 824         ret = report__setup_sample_type(rep);
 825         if (ret) {
 826                 /* report__setup_sample_type() already showed error message */
 827                 return ret;
 828         }
 829
 830         if (rep->stats_mode)
 831                 stats_setup(rep);
 832
 833         if (rep->tasks_mode)
 834                 tasks_setup(rep);
 835
 836         ret = perf_session__process_events(session);
 837         if (ret) {
 838                 ui__error("failed to process sample\n");
 839                 return ret;
 840         }
 841
 842         if (rep->stats_mode)
 843                 return stats_print(rep);
 844
 845         if (rep->tasks_mode)
 846                 return tasks_print(rep, stdout);
 847
 848         report__warn_kptr_restrict(rep);
 849
 850         evlist__for_each_entry(session->evlist, pos)
 851                 rep->nr_entries += evsel__hists(pos)->nr_entries;
 852
 853         if (use_browser == 0) {
 854                 if (verbose > 3)
 855                         perf_session__fprintf(session, stdout);
 856
 857                 if (verbose > 2)
 858                         perf_session__fprintf_dsos(session, stdout);
 859
 860                 if (dump_trace) {
 861                         perf_session__fprintf_nr_events(session, stdout);
 862                         perf_evlist__fprintf_nr_events(session->evlist, stdout);
 863                         return 0;
 864                 }
 865         }
 866
 867         ret = report__collapse_hists(rep);
 868         if (ret) {
 869                 ui__error("failed to process hist entry\n");
 870                 return ret;
 871         }
 872
 873         if (session_done())
 874                 return 0;
 875
 876         /*
 877          * recalculate number of entries after collapsing since it
 878          * might be changed during the collapse phase.
 879          */
 880         rep->nr_entries = 0;
 881         evlist__for_each_entry(session->evlist, pos)
 882                 rep->nr_entries += evsel__hists(pos)->nr_entries;
 883
 884         if (rep->nr_entries == 0) {
 885                 ui__error("The %s file has no samples!\n", data->file.path);
 886                 return 0;
 887         }
 888
 889         report__output_resort(rep);
 890
 891         return report__browse_hists(rep);
 892 }
 893
 894 static int
 895 report_parse_callchain_opt(const struct option *opt, const char *arg, int unset)
 896 {
 897         struct callchain_param *callchain = opt->value;
 898
 899         callchain->enabled = !unset;
 900         /*
 901          * --no-call-graph
 902          */
 903         if (unset) {
 904                 symbol_conf.use_callchain = false;
 905                 callchain->mode = CHAIN_NONE;
 906                 return 0;
 907         }
 908
 909         return parse_callchain_report_opt(arg);
 910 }
 911
 912 int
 913 report_parse_ignore_callees_opt(const struct option *opt __maybe_unused,
 914                                 const char *arg, int unset __maybe_unused)
 915 {
 916         if (arg) {
 917                 int err = regcomp(&ignore_callees_regex, arg, REG_EXTENDED);
 918                 if (err) {
 919                         char buf[BUFSIZ];
 920                         regerror(err, &ignore_callees_regex, buf, sizeof(buf));
 921                         pr_err("Invalid --ignore-callees regex: %s\n%s", arg, buf);
 922                         return -1;
 923                 }
 924                 have_ignore_callees = 1;
 925         }
 926
 927         return 0;
 928 }
 929
 930 static int
 931 parse_branch_mode(const struct option *opt,
 932                   const char *str __maybe_unused, int unset)
 933 {
 934         int *branch_mode = opt->value;
 935
 936         *branch_mode = !unset;
 937         return 0;
 938 }
 939
 940 static int
 941 parse_percent_limit(const struct option *opt, const char *str,
 942                     int unset __maybe_unused)
 943 {
 944         struct report *rep = opt->value;
 945         double pcnt = strtof(str, NULL);
 946
 947         rep->min_percent = pcnt;
 948         callchain_param.min_percent = pcnt;
 949         return 0;
 950 }
 951
 952 int cmd_report(int argc, const char **argv)
 953 {
 954         struct perf_session *session;
 955         struct itrace_synth_opts itrace_synth_opts = { .set = 0, };
 956         struct stat st;
 957         bool has_br_stack = false;
 958         int branch_mode = -1;
 959         bool branch_call_mode = false;
 960 #define CALLCHAIN_DEFAULT_OPT  "graph,0.5,caller,function,percent"
 961         static const char report_callchain_help[] = "Display call graph (stack chain/backtrace):\n\n"
 962                                                     CALLCHAIN_REPORT_HELP
 963                                                     "\n\t\t\t\tDefault: " CALLCHAIN_DEFAULT_OPT;
 964         char callchain_default_opt[] = CALLCHAIN_DEFAULT_OPT;
 965         const char * const report_usage[] = {
 966                 "perf report [<options>]",
 967                 NULL
 968         };
 969         struct report report = {
 970                 .tool = {
 971                         .sample          = process_sample_event,
 972                         .mmap            = perf_event__process_mmap,
 973                         .mmap2           = perf_event__process_mmap2,
 974                         .comm            = perf_event__process_comm,
 975                         .namespaces      = perf_event__process_namespaces,
 976                         .exit            = perf_event__process_exit,
 977                         .fork            = perf_event__process_fork,
 978                         .lost            = perf_event__process_lost,
 979                         .read            = process_read_event,
 980                         .attr            = perf_event__process_attr,
 981                         .tracing_data    = perf_event__process_tracing_data,
 982                         .build_id        = perf_event__process_build_id,
 983                         .id_index        = perf_event__process_id_index,
 984                         .auxtrace_info   = perf_event__process_auxtrace_info,
 985                         .auxtrace        = perf_event__process_auxtrace,
 986                         .event_update    = perf_event__process_event_update,
 987                         .feature         = process_feature_event,
 988                         .ordered_events  = true,
 989                         .ordering_requires_timestamps = true,
 990                 },
 991                 .max_stack               = PERF_MAX_STACK_DEPTH,
 992                 .pretty_printing_style   = "normal",
 993                 .socket_filter           = -1,
 994                 .annotation_opts         = annotation__default_options,
 995         };
 996         const struct option options[] = {
 997         OPT_STRING('i', "input", &input_name, "file",
 998                     "input file name"),
 999         OPT_INCR('v', "verbose", &verbose,
1000                     "be more verbose (show symbol address, etc)"),
1001         OPT_BOOLEAN('q', "quiet", &quiet, "Do not show any message"),
1002         OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
1003                     "dump raw trace in ASCII"),
1004         OPT_BOOLEAN(0, "stats", &report.stats_mode, "Display event stats"),
1005         OPT_BOOLEAN(0, "tasks", &report.tasks_mode, "Display recorded tasks"),
1006         OPT_BOOLEAN(0, "mmaps", &report.mmaps_mode, "Display recorded tasks memory maps"),
1007         OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
1008                    "file", "vmlinux pathname"),
1009         OPT_BOOLEAN(0, "ignore-vmlinux", &symbol_conf.ignore_vmlinux,
1010                     "don't load vmlinux even if found"),
1011         OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name,
1012                    "file", "kallsyms pathname"),
1013         OPT_BOOLEAN('f', "force", &symbol_conf.force, "don't complain, do it"),
1014         OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
1015                     "load module symbols - WARNING: use only with -k and LIVE kernel"),
1016         OPT_BOOLEAN('n', "show-nr-samples", &symbol_conf.show_nr_samples,
1017                     "Show a column with the number of samples"),
1018         OPT_BOOLEAN('T', "threads", &report.show_threads,
1019                     "Show per-thread event counters"),
1020         OPT_STRING(0, "pretty", &report.pretty_printing_style, "key",
1021                    "pretty printing style key: normal raw"),
1022         OPT_BOOLEAN(0, "tui", &report.use_tui, "Use the TUI interface"),
1023         OPT_BOOLEAN(0, "gtk", &report.use_gtk, "Use the GTK2 interface"),
1024         OPT_BOOLEAN(0, "stdio", &report.use_stdio,
1025                     "Use the stdio interface"),
1026         OPT_BOOLEAN(0, "header", &report.header, "Show data header."),
1027         OPT_BOOLEAN(0, "header-only", &report.header_only,
1028                     "Show only data header."),
1029         OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
1030                    "sort by key(s): pid, comm, dso, symbol, parent, cpu, srcline, ..."
1031                    " Please refer the man page for the complete list."),
1032         OPT_STRING('F', "fields", &field_order, "key[,keys...]",
1033                    "output field(s): overhead, period, sample plus all of sort keys"),
1034         OPT_BOOLEAN(0, "show-cpu-utilization", &symbol_conf.show_cpu_utilization,
1035                     "Show sample percentage for different cpu modes"),
1036         OPT_BOOLEAN_FLAG(0, "showcpuutilization", &symbol_conf.show_cpu_utilization,
1037                     "Show sample percentage for different cpu modes", PARSE_OPT_HIDDEN),
1038         OPT_STRING('p', "parent", &parent_pattern, "regex",
1039                    "regex filter to identify parent, see: '--sort parent'"),
1040         OPT_BOOLEAN('x', "exclude-other", &symbol_conf.exclude_other,
1041                     "Only display entries with parent-match"),
1042         OPT_CALLBACK_DEFAULT('g', "call-graph", &callchain_param,
1043                              "print_type,threshold[,print_limit],order,sort_key[,branch],value",
1044                              report_callchain_help, &report_parse_callchain_opt,
1045                              callchain_default_opt),
1046         OPT_BOOLEAN(0, "children", &symbol_conf.cumulate_callchain,
1047                     "Accumulate callchains of children and show total overhead as well"),
1048         OPT_INTEGER(0, "max-stack", &report.max_stack,
1049                     "Set the maximum stack depth when parsing the callchain, "
1050                     "anything beyond the specified depth will be ignored. "
1051                     "Default: kernel.perf_event_max_stack or " __stringify(PERF_MAX_STACK_DEPTH)),
1052         OPT_BOOLEAN('G', "inverted", &report.inverted_callchain,
1053                     "alias for inverted call graph"),
1054         OPT_CALLBACK(0, "ignore-callees", NULL, "regex",
1055                    "ignore callees of these functions in call graphs",
1056                    report_parse_ignore_callees_opt),
1057         OPT_STRING('d', "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
1058                    "only consider symbols in these dsos"),
1059         OPT_STRING('c', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
1060                    "only consider symbols in these comms"),
1061         OPT_STRING(0, "pid", &symbol_conf.pid_list_str, "pid[,pid...]",
1062                    "only consider symbols in these pids"),
1063         OPT_STRING(0, "tid", &symbol_conf.tid_list_str, "tid[,tid...]",
1064                    "only consider symbols in these tids"),
1065         OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
1066                    "only consider these symbols"),
1067         OPT_STRING(0, "symbol-filter", &report.symbol_filter_str, "filter",
1068                    "only show symbols that (partially) match with this filter"),
1069         OPT_STRING('w', "column-widths", &symbol_conf.col_width_list_str,
1070                    "width[,width...]",
1071                    "don't try to adjust column width, use these fixed values"),
1072         OPT_STRING_NOEMPTY('t', "field-separator", &symbol_conf.field_sep, "separator",
1073                    "separator for columns, no spaces will be added between "
1074                    "columns '.' is reserved."),
1075         OPT_BOOLEAN('U', "hide-unresolved", &symbol_conf.hide_unresolved,
1076                     "Only display entries resolved to a symbol"),
1077         OPT_CALLBACK(0, "symfs", NULL, "directory",
1078                      "Look for files with symbols relative to this directory",
1079                      symbol__config_symfs),
1080         OPT_STRING('C', "cpu", &report.cpu_list, "cpu",
1081                    "list of cpus to profile"),
1082         OPT_BOOLEAN('I', "show-info", &report.show_full_info,
1083                     "Display extended information about perf.data file"),
1084         OPT_BOOLEAN(0, "source", &report.annotation_opts.annotate_src,
1085                     "Interleave source code with assembly code (default)"),
1086         OPT_BOOLEAN(0, "asm-raw", &report.annotation_opts.show_asm_raw,
1087                     "Display raw encoding of assembly instructions (default)"),
1088         OPT_STRING('M', "disassembler-style", &report.annotation_opts.disassembler_style, "disassembler style",
1089                    "Specify disassembler style (e.g. -M intel for intel syntax)"),
1090         OPT_BOOLEAN(0, "show-total-period", &symbol_conf.show_total_period,
1091                     "Show a column with the sum of periods"),
1092         OPT_BOOLEAN_SET(0, "group", &symbol_conf.event_group, &report.group_set,
1093                     "Show event group information together"),
1094         OPT_CALLBACK_NOOPT('b', "branch-stack", &branch_mode, "",
1095                     "use branch records for per branch histogram filling",
1096                     parse_branch_mode),
1097         OPT_BOOLEAN(0, "branch-history", &branch_call_mode,
1098                     "add last branch records to call history"),
1099         OPT_STRING(0, "objdump", &report.annotation_opts.objdump_path, "path",
1100                    "objdump binary to use for disassembly and annotations"),
1101         OPT_BOOLEAN(0, "demangle", &symbol_conf.demangle,
1102                     "Disable symbol demangling"),
1103         OPT_BOOLEAN(0, "demangle-kernel", &symbol_conf.demangle_kernel,
1104                     "Enable kernel symbol demangling"),
1105         OPT_BOOLEAN(0, "mem-mode", &report.mem_mode, "mem access profile"),
1106         OPT_CALLBACK(0, "percent-limit", &report, "percent",
1107                      "Don't show entries under that percent", parse_percent_limit),
1108         OPT_CALLBACK(0, "percentage", NULL, "relative|absolute",
1109                      "how to display percentage of filtered entries", parse_filter_percentage),
1110         OPT_CALLBACK_OPTARG(0, "itrace", &itrace_synth_opts, NULL, "opts",
1111                             "Instruction Tracing options\n" ITRACE_HELP,
1112                             itrace_parse_synth_opts),
1113         OPT_BOOLEAN(0, "full-source-path", &srcline_full_filename,
1114                         "Show full source file name path for source lines"),
1115         OPT_BOOLEAN(0, "show-ref-call-graph", &symbol_conf.show_ref_callgraph,
1116                     "Show callgraph from reference event"),
1117         OPT_INTEGER(0, "socket-filter", &report.socket_filter,
1118                     "only show processor socket that match with this filter"),
1119         OPT_BOOLEAN(0, "raw-trace", &symbol_conf.raw_trace,
1120                     "Show raw trace event output (do not use print fmt or plugins)"),
1121         OPT_BOOLEAN(0, "hierarchy", &symbol_conf.report_hierarchy,
1122                     "Show entries in a hierarchy"),
1123         OPT_CALLBACK_DEFAULT(0, "stdio-color", NULL, "mode",
1124                              "'always' (default), 'never' or 'auto' only applicable to --stdio mode",
1125                              stdio__config_color, "always"),
1126         OPT_STRING(0, "time", &report.time_str, "str",
1127                    "Time span of interest (start,stop)"),
1128         OPT_BOOLEAN(0, "inline", &symbol_conf.inline_name,
1129                     "Show inline function"),
1130         OPT_CALLBACK(0, "percent-type", &report.annotation_opts, "local-period",
1131                      "Set percent type local/global-period/hits",
1132                      annotate_parse_percent_type),
1133         OPT_END()
1134         };
1135         struct perf_data data = {
1136                 .mode  = PERF_DATA_MODE_READ,
1137         };
1138         int ret = hists__init();
1139         char sort_tmp[128];
1140
1141         if (ret < 0)
1142                 return ret;
1143
1144         ret = perf_config(report__config, &report);
1145         if (ret)
1146                 return ret;
1147
1148         argc = parse_options(argc, argv, options, report_usage, 0);
1149         if (argc) {
1150                 /*
1151                  * Special case: if there's an argument left then assume that
1152                  * it's a symbol filter:
1153                  */
1154                 if (argc > 1)
1155                         usage_with_options(report_usage, options);
1156
1157                 report.symbol_filter_str = argv[0];
1158         }
1159
1160         if (report.mmaps_mode)
1161                 report.tasks_mode = true;
1162
1163         if (quiet)
1164                 perf_quiet_option();
1165
1166         if (symbol_conf.vmlinux_name &&
1167             access(symbol_conf.vmlinux_name, R_OK)) {
1168                 pr_err("Invalid file: %s\n", symbol_conf.vmlinux_name);
1169                 return -EINVAL;
1170         }
1171         if (symbol_conf.kallsyms_name &&
1172             access(symbol_conf.kallsyms_name, R_OK)) {
1173                 pr_err("Invalid file: %s\n", symbol_conf.kallsyms_name);
1174                 return -EINVAL;
1175         }
1176
1177         if (report.inverted_callchain)
1178                 callchain_param.order = ORDER_CALLER;
1179         if (symbol_conf.cumulate_callchain && !callchain_param.order_set)
1180                 callchain_param.order = ORDER_CALLER;
1181
1182         if (itrace_synth_opts.callchain &&
1183             (int)itrace_synth_opts.callchain_sz > report.max_stack)
1184                 report.max_stack = itrace_synth_opts.callchain_sz;
1185
1186         if (!input_name || !strlen(input_name)) {
1187                 if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
1188                         input_name = "-";
1189                 else
1190                         input_name = "perf.data";
1191         }
1192
1193         data.file.path = input_name;
1194         data.force     = symbol_conf.force;
1195
1196 repeat:
1197         session = perf_session__new(&data, false, &report.tool);
1198         if (session == NULL)
1199                 return -1;
1200
1201         if (report.queue_size) {
1202                 ordered_events__set_alloc_size(&session->ordered_events,
1203                                                report.queue_size);
1204         }
1205
1206         session->itrace_synth_opts = &itrace_synth_opts;
1207
1208         report.session = session;
1209
1210         has_br_stack = perf_header__has_feat(&session->header,
1211                                              HEADER_BRANCH_STACK);
1212
1213         setup_forced_leader(&report, session->evlist);
1214
1215         if (itrace_synth_opts.last_branch)
1216                 has_br_stack = true;
1217
1218         if (has_br_stack && branch_call_mode)
1219                 symbol_conf.show_branchflag_count = true;
1220
1221         memset(&report.brtype_stat, 0, sizeof(struct branch_type_stat));
1222
1223         /*
1224          * Branch mode is a tristate:
1225          * -1 means default, so decide based on the file having branch data.
1226          * 0/1 means the user chose a mode.
1227          */
1228         if (((branch_mode == -1 && has_br_stack) || branch_mode == 1) &&
1229             !branch_call_mode) {
1230                 sort__mode = SORT_MODE__BRANCH;
1231                 symbol_conf.cumulate_callchain = false;
1232         }
1233         if (branch_call_mode) {
1234                 callchain_param.key = CCKEY_ADDRESS;
1235                 callchain_param.branch_callstack = 1;
1236                 symbol_conf.use_callchain = true;
1237                 callchain_register_param(&callchain_param);
1238                 if (sort_order == NULL)
1239                         sort_order = "srcline,symbol,dso";
1240         }
1241
1242         if (report.mem_mode) {
1243                 if (sort__mode == SORT_MODE__BRANCH) {
1244                         pr_err("branch and mem mode incompatible\n");
1245                         goto error;
1246                 }
1247                 sort__mode = SORT_MODE__MEMORY;
1248                 symbol_conf.cumulate_callchain = false;
1249         }
1250
1251         if (symbol_conf.report_hierarchy) {
1252                 /* disable incompatible options */
1253                 symbol_conf.cumulate_callchain = false;
1254
1255                 if (field_order) {
1256                         pr_err("Error: --hierarchy and --fields options cannot be used together\n");
1257                         parse_options_usage(report_usage, options, "F", 1);
1258                         parse_options_usage(NULL, options, "hierarchy", 0);
1259                         goto error;
1260                 }
1261
1262                 perf_hpp_list.need_collapse = true;
1263         }
1264
1265         if (report.use_stdio)
1266                 use_browser = 0;
1267         else if (report.use_tui)
1268                 use_browser = 1;
1269         else if (report.use_gtk)
1270                 use_browser = 2;
1271
1272         /* Force tty output for header output and per-thread stat. */
1273         if (report.header || report.header_only || report.show_threads)
1274                 use_browser = 0;
1275         if (report.header || report.header_only)
1276                 report.tool.show_feat_hdr = SHOW_FEAT_HEADER;
1277         if (report.show_full_info)
1278                 report.tool.show_feat_hdr = SHOW_FEAT_HEADER_FULL_INFO;
1279         if (report.stats_mode || report.tasks_mode)
1280                 use_browser = 0;
1281         if (report.stats_mode && report.tasks_mode) {
1282                 pr_err("Error: --tasks and --mmaps can't be used together with --stats\n");
1283                 goto error;
1284         }
1285
1286         if (strcmp(input_name, "-") != 0)
1287                 setup_browser(true);
1288         else
1289                 use_browser = 0;
1290
1291         if (sort_order && strstr(sort_order, "ipc")) {
1292                 parse_options_usage(report_usage, options, "s", 1);
1293                 goto error;
1294         }
1295
1296         if (sort_order && strstr(sort_order, "symbol")) {
1297                 if (sort__mode == SORT_MODE__BRANCH) {
1298                         snprintf(sort_tmp, sizeof(sort_tmp), "%s,%s",
1299                                  sort_order, "ipc_lbr");
1300                         report.symbol_ipc = true;
1301                 } else {
1302                         snprintf(sort_tmp, sizeof(sort_tmp), "%s,%s",
1303                                  sort_order, "ipc_null");
1304                 }
1305
1306                 sort_order = sort_tmp;
1307         }
1308
1309         if (setup_sorting(session->evlist) < 0) {
1310                 if (sort_order)
1311                         parse_options_usage(report_usage, options, "s", 1);
1312                 if (field_order)
1313                         parse_options_usage(sort_order ? NULL : report_usage,
1314                                             options, "F", 1);
1315                 goto error;
1316         }
1317
1318         if ((report.header || report.header_only) && !quiet) {
1319                 perf_session__fprintf_info(session, stdout,
1320                                            report.show_full_info);
1321                 if (report.header_only) {
1322                         ret = 0;
1323                         goto error;
1324                 }
1325         } else if (use_browser == 0 && !quiet &&
1326                    !report.stats_mode && !report.tasks_mode) {
1327                 fputs("# To display the perf.data header info, please use --header/--header-only options.\n#\n",
1328                       stdout);
1329         }
1330
1331         /*
1332          * Only in the TUI browser we are doing integrated annotation,
1333          * so don't allocate extra space that won't be used in the stdio
1334          * implementation.
1335          */
1336         if (ui__has_annotation() || report.symbol_ipc) {
1337                 ret = symbol__annotation_init();
1338                 if (ret < 0)
1339                         goto error;
1340                 /*
1341                  * For searching by name on the "Browse map details".
1342                  * providing it only in verbose mode not to bloat too
1343                  * much struct symbol.
1344                  */
1345                 if (verbose > 0) {
1346                         /*
1347                          * XXX: Need to provide a less kludgy way to ask for
1348                          * more space per symbol, the u32 is for the index on
1349                          * the ui browser.
1350                          * See symbol__browser_index.
1351                          */
1352                         symbol_conf.priv_size += sizeof(u32);
1353                         symbol_conf.sort_by_name = true;
1354                 }
1355                 annotation_config__init();
1356         }
1357
1358         if (symbol__init(&session->header.env) < 0)
1359                 goto error;
1360
1361         report.ptime_range = perf_time__range_alloc(report.time_str,
1362                                                     &report.range_size);
1363         if (!report.ptime_range) {
1364                 ret = -ENOMEM;
1365                 goto error;
1366         }
1367
1368         if (perf_time__parse_str(report.ptime_range, report.time_str) != 0) {
1369                 if (session->evlist->first_sample_time == 0 &&
1370                     session->evlist->last_sample_time == 0) {
1371                         pr_err("HINT: no first/last sample time found in perf data.\n"
1372                                "Please use latest perf binary to execute 'perf record'\n"
1373                                "(if '--buildid-all' is enabled, please set '--timestamp-boundary').\n");
1374                         ret = -EINVAL;
1375                         goto error;
1376                 }
1377
1378                 report.range_num = perf_time__percent_parse_str(
1379                                         report.ptime_range, report.range_size,
1380                                         report.time_str,
1381                                         session->evlist->first_sample_time,
1382                                         session->evlist->last_sample_time);
1383
1384                 if (report.range_num < 0) {
1385                         pr_err("Invalid time string\n");
1386                         ret = -EINVAL;
1387                         goto error;
1388                 }
1389         } else {
1390                 report.range_num = 1;
1391         }
1392
1393         if (session->tevent.pevent &&
1394             tep_set_function_resolver(session->tevent.pevent,
1395                                       machine__resolve_kernel_addr,
1396                                       &session->machines.host) < 0) {
1397                 pr_err("%s: failed to set libtraceevent function resolver\n",
1398                        __func__);
1399                 return -1;
1400         }
1401
1402         sort__setup_elide(stdout);
1403
1404         ret = __cmd_report(&report);
1405         if (ret == K_SWITCH_INPUT_DATA) {
1406                 perf_session__delete(session);
1407                 goto repeat;
1408         } else
1409                 ret = 0;
1410
1411 error:
1412         zfree(&report.ptime_range);
1413
1414         perf_session__delete(session);
1415         return ret;
1416 }