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 #if !defined(HAVE_LIBUNWIND_SUPPORT) && !defined(HAVE_DWARF_SUPPORT)
 387         if (dwarf_callchain_users) {
 388                 ui__warning("Please install libunwind or libdw "
 389                             "development packages during the perf build.\n");
 390         }
 391 #endif
 392
 393         return 0;
 394 }
 395
 396 static void sig_handler(int sig __maybe_unused)
 397 {
 398         session_done = 1;
 399 }
 400
 401 static size_t hists__fprintf_nr_sample_events(struct hists *hists, struct report *rep,
 402                                               const char *evname, FILE *fp)
 403 {
 404         size_t ret;
 405         char unit;
 406         unsigned long nr_samples = hists->stats.nr_events[PERF_RECORD_SAMPLE];
 407         u64 nr_events = hists->stats.total_period;
 408         struct perf_evsel *evsel = hists_to_evsel(hists);
 409         char buf[512];
 410         size_t size = sizeof(buf);
 411         int socked_id = hists->socket_filter;
 412
 413         if (quiet)
 414                 return 0;
 415
 416         if (symbol_conf.filter_relative) {
 417                 nr_samples = hists->stats.nr_non_filtered_samples;
 418                 nr_events = hists->stats.total_non_filtered_period;
 419         }
 420
 421         if (perf_evsel__is_group_event(evsel)) {
 422                 struct perf_evsel *pos;
 423
 424                 perf_evsel__group_desc(evsel, buf, size);
 425                 evname = buf;
 426
 427                 for_each_group_member(pos, evsel) {
 428                         const struct hists *pos_hists = evsel__hists(pos);
 429
 430                         if (symbol_conf.filter_relative) {
 431                                 nr_samples += pos_hists->stats.nr_non_filtered_samples;
 432                                 nr_events += pos_hists->stats.total_non_filtered_period;
 433                         } else {
 434                                 nr_samples += pos_hists->stats.nr_events[PERF_RECORD_SAMPLE];
 435                                 nr_events += pos_hists->stats.total_period;
 436                         }
 437                 }
 438         }
 439
 440         nr_samples = convert_unit(nr_samples, &unit);
 441         ret = fprintf(fp, "# Samples: %lu%c", nr_samples, unit);
 442         if (evname != NULL) {
 443                 ret += fprintf(fp, " of event%s '%s'",
 444                                evsel->nr_members > 1 ? "s" : "", evname);
 445         }
 446
 447         if (rep->time_str)
 448                 ret += fprintf(fp, " (time slices: %s)", rep->time_str);
 449
 450         if (symbol_conf.show_ref_callgraph && evname && strstr(evname, "call-graph=no")) {
 451                 ret += fprintf(fp, ", show reference callgraph");
 452         }
 453
 454         if (rep->mem_mode) {
 455                 ret += fprintf(fp, "\n# Total weight : %" PRIu64, nr_events);
 456                 ret += fprintf(fp, "\n# Sort order   : %s", sort_order ? : default_mem_sort_order);
 457         } else
 458                 ret += fprintf(fp, "\n# Event count (approx.): %" PRIu64, nr_events);
 459
 460         if (socked_id > -1)
 461                 ret += fprintf(fp, "\n# Processor Socket: %d", socked_id);
 462
 463         return ret + fprintf(fp, "\n#\n");
 464 }
 465
 466 static int perf_evlist__tty_browse_hists(struct perf_evlist *evlist,
 467                                          struct report *rep,
 468                                          const char *help)
 469 {
 470         struct perf_evsel *pos;
 471
 472         if (!quiet) {
 473                 fprintf(stdout, "#\n# Total Lost Samples: %" PRIu64 "\n#\n",
 474                         evlist->stats.total_lost_samples);
 475         }
 476
 477         evlist__for_each_entry(evlist, pos) {
 478                 struct hists *hists = evsel__hists(pos);
 479                 const char *evname = perf_evsel__name(pos);
 480
 481                 if (symbol_conf.event_group &&
 482                     !perf_evsel__is_group_leader(pos))
 483                         continue;
 484
 485                 hists__fprintf_nr_sample_events(hists, rep, evname, stdout);
 486                 hists__fprintf(hists, !quiet, 0, 0, rep->min_percent, stdout,
 487                                !(symbol_conf.use_callchain ||
 488                                  symbol_conf.show_branchflag_count));
 489                 fprintf(stdout, "\n\n");
 490         }
 491
 492         if (!quiet)
 493                 fprintf(stdout, "#\n# (%s)\n#\n", help);
 494
 495         if (rep->show_threads) {
 496                 bool style = !strcmp(rep->pretty_printing_style, "raw");
 497                 perf_read_values_display(stdout, &rep->show_threads_values,
 498                                          style);
 499                 perf_read_values_destroy(&rep->show_threads_values);
 500         }
 501
 502         if (sort__mode == SORT_MODE__BRANCH)
 503                 branch_type_stat_display(stdout, &rep->brtype_stat);
 504
 505         return 0;
 506 }
 507
 508 static void report__warn_kptr_restrict(const struct report *rep)
 509 {
 510         struct map *kernel_map = machine__kernel_map(&rep->session->machines.host);
 511         struct kmap *kernel_kmap = kernel_map ? map__kmap(kernel_map) : NULL;
 512
 513         if (perf_evlist__exclude_kernel(rep->session->evlist))
 514                 return;
 515
 516         if (kernel_map == NULL ||
 517             (kernel_map->dso->hit &&
 518              (kernel_kmap->ref_reloc_sym == NULL ||
 519               kernel_kmap->ref_reloc_sym->addr == 0))) {
 520                 const char *desc =
 521                     "As no suitable kallsyms nor vmlinux was found, kernel samples\n"
 522                     "can't be resolved.";
 523
 524                 if (kernel_map && map__has_symbols(kernel_map)) {
 525                         desc = "If some relocation was applied (e.g. "
 526                                "kexec) symbols may be misresolved.";
 527                 }
 528
 529                 ui__warning(
 530 "Kernel address maps (/proc/{kallsyms,modules}) were restricted.\n\n"
 531 "Check /proc/sys/kernel/kptr_restrict before running 'perf record'.\n\n%s\n\n"
 532 "Samples in kernel modules can't be resolved as well.\n\n",
 533                 desc);
 534         }
 535 }
 536
 537 static int report__gtk_browse_hists(struct report *rep, const char *help)
 538 {
 539         int (*hist_browser)(struct perf_evlist *evlist, const char *help,
 540                             struct hist_browser_timer *timer, float min_pcnt);
 541
 542         hist_browser = dlsym(perf_gtk_handle, "perf_evlist__gtk_browse_hists");
 543
 544         if (hist_browser == NULL) {
 545                 ui__error("GTK browser not found!\n");
 546                 return -1;
 547         }
 548
 549         return hist_browser(rep->session->evlist, help, NULL, rep->min_percent);
 550 }
 551
 552 static int report__browse_hists(struct report *rep)
 553 {
 554         int ret;
 555         struct perf_session *session = rep->session;
 556         struct perf_evlist *evlist = session->evlist;
 557         const char *help = perf_tip(system_path(TIPDIR));
 558
 559         if (help == NULL) {
 560                 /* fallback for people who don't install perf ;-) */
 561                 help = perf_tip(DOCDIR);
 562                 if (help == NULL)
 563                         help = "Cannot load tips.txt file, please install perf!";
 564         }
 565
 566         switch (use_browser) {
 567         case 1:
 568                 ret = perf_evlist__tui_browse_hists(evlist, help, NULL,
 569                                                     rep->min_percent,
 570                                                     &session->header.env,
 571                                                     true, &rep->annotation_opts);
 572                 /*
 573                  * Usually "ret" is the last pressed key, and we only
 574                  * care if the key notifies us to switch data file.
 575                  */
 576                 if (ret != K_SWITCH_INPUT_DATA)
 577                         ret = 0;
 578                 break;
 579         case 2:
 580                 ret = report__gtk_browse_hists(rep, help);
 581                 break;
 582         default:
 583                 ret = perf_evlist__tty_browse_hists(evlist, rep, help);
 584                 break;
 585         }
 586
 587         return ret;
 588 }
 589
 590 static int report__collapse_hists(struct report *rep)
 591 {
 592         struct ui_progress prog;
 593         struct perf_evsel *pos;
 594         int ret = 0;
 595
 596         ui_progress__init(&prog, rep->nr_entries, "Merging related events...");
 597
 598         evlist__for_each_entry(rep->session->evlist, pos) {
 599                 struct hists *hists = evsel__hists(pos);
 600
 601                 if (pos->idx == 0)
 602                         hists->symbol_filter_str = rep->symbol_filter_str;
 603
 604                 hists->socket_filter = rep->socket_filter;
 605
 606                 ret = hists__collapse_resort(hists, &prog);
 607                 if (ret < 0)
 608                         break;
 609
 610                 /* Non-group events are considered as leader */
 611                 if (symbol_conf.event_group &&
 612                     !perf_evsel__is_group_leader(pos)) {
 613                         struct hists *leader_hists = evsel__hists(pos->leader);
 614
 615                         hists__match(leader_hists, hists);
 616                         hists__link(leader_hists, hists);
 617                 }
 618         }
 619
 620         ui_progress__finish();
 621         return ret;
 622 }
 623
 624 static void report__output_resort(struct report *rep)
 625 {
 626         struct ui_progress prog;
 627         struct perf_evsel *pos;
 628
 629         ui_progress__init(&prog, rep->nr_entries, "Sorting events for output...");
 630
 631         evlist__for_each_entry(rep->session->evlist, pos)
 632                 perf_evsel__output_resort(pos, &prog);
 633
 634         ui_progress__finish();
 635 }
 636
 637 static void stats_setup(struct report *rep)
 638 {
 639         memset(&rep->tool, 0, sizeof(rep->tool));
 640         rep->tool.no_warn = true;
 641 }
 642
 643 static int stats_print(struct report *rep)
 644 {
 645         struct perf_session *session = rep->session;
 646
 647         perf_session__fprintf_nr_events(session, stdout);
 648         return 0;
 649 }
 650
 651 static void tasks_setup(struct report *rep)
 652 {
 653         memset(&rep->tool, 0, sizeof(rep->tool));
 654         rep->tool.ordered_events = true;
 655         if (rep->mmaps_mode) {
 656                 rep->tool.mmap = perf_event__process_mmap;
 657                 rep->tool.mmap2 = perf_event__process_mmap2;
 658         }
 659         rep->tool.comm = perf_event__process_comm;
 660         rep->tool.exit = perf_event__process_exit;
 661         rep->tool.fork = perf_event__process_fork;
 662         rep->tool.no_warn = true;
 663 }
 664
 665 struct task {
 666         struct thread           *thread;
 667         struct list_head         list;
 668         struct list_head         children;
 669 };
 670
 671 static struct task *tasks_list(struct task *task, struct machine *machine)
 672 {
 673         struct thread *parent_thread, *thread = task->thread;
 674         struct task   *parent_task;
 675
 676         /* Already listed. */
 677         if (!list_empty(&task->list))
 678                 return NULL;
 679
 680         /* Last one in the chain. */
 681         if (thread->ppid == -1)
 682                 return task;
 683
 684         parent_thread = machine__find_thread(machine, -1, thread->ppid);
 685         if (!parent_thread)
 686                 return ERR_PTR(-ENOENT);
 687
 688         parent_task = thread__priv(parent_thread);
 689         list_add_tail(&task->list, &parent_task->children);
 690         return tasks_list(parent_task, machine);
 691 }
 692
 693 static size_t maps__fprintf_task(struct maps *maps, int indent, FILE *fp)
 694 {
 695         size_t printed = 0;
 696         struct rb_node *nd;
 697
 698         for (nd = rb_first(&maps->entries); nd; nd = rb_next(nd)) {
 699                 struct map *map = rb_entry(nd, struct map, rb_node);
 700
 701                 printed += fprintf(fp, "%*s  %" PRIx64 "-%" PRIx64 " %c%c%c%c %08" PRIx64 " %" PRIu64 " %s\n",
 702                                    indent, "", map->start, map->end,
 703                                    map->prot & PROT_READ ? 'r' : '-',
 704                                    map->prot & PROT_WRITE ? 'w' : '-',
 705                                    map->prot & PROT_EXEC ? 'x' : '-',
 706                                    map->flags & MAP_SHARED ? 's' : 'p',
 707                                    map->pgoff,
 708                                    map->ino, map->dso->name);
 709         }
 710
 711         return printed;
 712 }
 713
 714 static int map_groups__fprintf_task(struct map_groups *mg, int indent, FILE *fp)
 715 {
 716         return maps__fprintf_task(&mg->maps, indent, fp);
 717 }
 718
 719 static void task__print_level(struct task *task, FILE *fp, int level)
 720 {
 721         struct thread *thread = task->thread;
 722         struct task *child;
 723         int comm_indent = fprintf(fp, "  %8d %8d %8d |%*s",
 724                                   thread->pid_, thread->tid, thread->ppid,
 725                                   level, "");
 726
 727         fprintf(fp, "%s\n", thread__comm_str(thread));
 728
 729         map_groups__fprintf_task(thread->mg, comm_indent, fp);
 730
 731         if (!list_empty(&task->children)) {
 732                 list_for_each_entry(child, &task->children, list)
 733                         task__print_level(child, fp, level + 1);
 734         }
 735 }
 736
 737 static int tasks_print(struct report *rep, FILE *fp)
 738 {
 739         struct perf_session *session = rep->session;
 740         struct machine      *machine = &session->machines.host;
 741         struct task *tasks, *task;
 742         unsigned int nr = 0, itask = 0, i;
 743         struct rb_node *nd;
 744         LIST_HEAD(list);
 745
 746         /*
 747          * No locking needed while accessing machine->threads,
 748          * because --tasks is single threaded command.
 749          */
 750
 751         /* Count all the threads. */
 752         for (i = 0; i < THREADS__TABLE_SIZE; i++)
 753                 nr += machine->threads[i].nr;
 754
 755         tasks = malloc(sizeof(*tasks) * nr);
 756         if (!tasks)
 757                 return -ENOMEM;
 758
 759         for (i = 0; i < THREADS__TABLE_SIZE; i++) {
 760                 struct threads *threads = &machine->threads[i];
 761
 762                 for (nd = rb_first(&threads->entries); nd; nd = rb_next(nd)) {
 763                         task = tasks + itask++;
 764
 765                         task->thread = rb_entry(nd, struct thread, rb_node);
 766                         INIT_LIST_HEAD(&task->children);
 767                         INIT_LIST_HEAD(&task->list);
 768                         thread__set_priv(task->thread, task);
 769                 }
 770         }
 771
 772         /*
 773          * Iterate every task down to the unprocessed parent
 774          * and link all in task children list. Task with no
 775          * parent is added into 'list'.
 776          */
 777         for (itask = 0; itask < nr; itask++) {
 778                 task = tasks + itask;
 779
 780                 if (!list_empty(&task->list))
 781                         continue;
 782
 783                 task = tasks_list(task, machine);
 784                 if (IS_ERR(task)) {
 785                         pr_err("Error: failed to process tasks\n");
 786                         free(tasks);
 787                         return PTR_ERR(task);
 788                 }
 789
 790                 if (task)
 791                         list_add_tail(&task->list, &list);
 792         }
 793
 794         fprintf(fp, "# %8s %8s %8s  %s\n", "pid", "tid", "ppid", "comm");
 795
 796         list_for_each_entry(task, &list, list)
 797                 task__print_level(task, fp, 0);
 798
 799         free(tasks);
 800         return 0;
 801 }
 802
 803 static int __cmd_report(struct report *rep)
 804 {
 805         int ret;
 806         struct perf_session *session = rep->session;
 807         struct perf_evsel *pos;
 808         struct perf_data *data = session->data;
 809
 810         signal(SIGINT, sig_handler);
 811
 812         if (rep->cpu_list) {
 813                 ret = perf_session__cpu_bitmap(session, rep->cpu_list,
 814                                                rep->cpu_bitmap);
 815                 if (ret) {
 816                         ui__error("failed to set cpu bitmap\n");
 817                         return ret;
 818                 }
 819                 session->itrace_synth_opts->cpu_bitmap = rep->cpu_bitmap;
 820         }
 821
 822         if (rep->show_threads) {
 823                 ret = perf_read_values_init(&rep->show_threads_values);
 824                 if (ret)
 825                         return ret;
 826         }
 827
 828         ret = report__setup_sample_type(rep);
 829         if (ret) {
 830                 /* report__setup_sample_type() already showed error message */
 831                 return ret;
 832         }
 833
 834         if (rep->stats_mode)
 835                 stats_setup(rep);
 836
 837         if (rep->tasks_mode)
 838                 tasks_setup(rep);
 839
 840         ret = perf_session__process_events(session);
 841         if (ret) {
 842                 ui__error("failed to process sample\n");
 843                 return ret;
 844         }
 845
 846         if (rep->stats_mode)
 847                 return stats_print(rep);
 848
 849         if (rep->tasks_mode)
 850                 return tasks_print(rep, stdout);
 851
 852         report__warn_kptr_restrict(rep);
 853
 854         evlist__for_each_entry(session->evlist, pos)
 855                 rep->nr_entries += evsel__hists(pos)->nr_entries;
 856
 857         if (use_browser == 0) {
 858                 if (verbose > 3)
 859                         perf_session__fprintf(session, stdout);
 860
 861                 if (verbose > 2)
 862                         perf_session__fprintf_dsos(session, stdout);
 863
 864                 if (dump_trace) {
 865                         perf_session__fprintf_nr_events(session, stdout);
 866                         perf_evlist__fprintf_nr_events(session->evlist, stdout);
 867                         return 0;
 868                 }
 869         }
 870
 871         ret = report__collapse_hists(rep);
 872         if (ret) {
 873                 ui__error("failed to process hist entry\n");
 874                 return ret;
 875         }
 876
 877         if (session_done())
 878                 return 0;
 879
 880         /*
 881          * recalculate number of entries after collapsing since it
 882          * might be changed during the collapse phase.
 883          */
 884         rep->nr_entries = 0;
 885         evlist__for_each_entry(session->evlist, pos)
 886                 rep->nr_entries += evsel__hists(pos)->nr_entries;
 887
 888         if (rep->nr_entries == 0) {
 889                 ui__error("The %s file has no samples!\n", data->file.path);
 890                 return 0;
 891         }
 892
 893         report__output_resort(rep);
 894
 895         return report__browse_hists(rep);
 896 }
 897
 898 static int
 899 report_parse_callchain_opt(const struct option *opt, const char *arg, int unset)
 900 {
 901         struct callchain_param *callchain = opt->value;
 902
 903         callchain->enabled = !unset;
 904         /*
 905          * --no-call-graph
 906          */
 907         if (unset) {
 908                 symbol_conf.use_callchain = false;
 909                 callchain->mode = CHAIN_NONE;
 910                 return 0;
 911         }
 912
 913         return parse_callchain_report_opt(arg);
 914 }
 915
 916 int
 917 report_parse_ignore_callees_opt(const struct option *opt __maybe_unused,
 918                                 const char *arg, int unset __maybe_unused)
 919 {
 920         if (arg) {
 921                 int err = regcomp(&ignore_callees_regex, arg, REG_EXTENDED);
 922                 if (err) {
 923                         char buf[BUFSIZ];
 924                         regerror(err, &ignore_callees_regex, buf, sizeof(buf));
 925                         pr_err("Invalid --ignore-callees regex: %s\n%s", arg, buf);
 926                         return -1;
 927                 }
 928                 have_ignore_callees = 1;
 929         }
 930
 931         return 0;
 932 }
 933
 934 static int
 935 parse_branch_mode(const struct option *opt,
 936                   const char *str __maybe_unused, int unset)
 937 {
 938         int *branch_mode = opt->value;
 939
 940         *branch_mode = !unset;
 941         return 0;
 942 }
 943
 944 static int
 945 parse_percent_limit(const struct option *opt, const char *str,
 946                     int unset __maybe_unused)
 947 {
 948         struct report *rep = opt->value;
 949         double pcnt = strtof(str, NULL);
 950
 951         rep->min_percent = pcnt;
 952         callchain_param.min_percent = pcnt;
 953         return 0;
 954 }
 955
 956 int cmd_report(int argc, const char **argv)
 957 {
 958         struct perf_session *session;
 959         struct itrace_synth_opts itrace_synth_opts = { .set = 0, };
 960         struct stat st;
 961         bool has_br_stack = false;
 962         int branch_mode = -1;
 963         int last_key = 0;
 964         bool branch_call_mode = false;
 965 #define CALLCHAIN_DEFAULT_OPT  "graph,0.5,caller,function,percent"
 966         const char report_callchain_help[] = "Display call graph (stack chain/backtrace):\n\n"
 967                                              CALLCHAIN_REPORT_HELP
 968                                              "\n\t\t\t\tDefault: " CALLCHAIN_DEFAULT_OPT;
 969         char callchain_default_opt[] = CALLCHAIN_DEFAULT_OPT;
 970         const char * const report_usage[] = {
 971                 "perf report [<options>]",
 972                 NULL
 973         };
 974         struct report report = {
 975                 .tool = {
 976                         .sample          = process_sample_event,
 977                         .mmap            = perf_event__process_mmap,
 978                         .mmap2           = perf_event__process_mmap2,
 979                         .comm            = perf_event__process_comm,
 980                         .namespaces      = perf_event__process_namespaces,
 981                         .exit            = perf_event__process_exit,
 982                         .fork            = perf_event__process_fork,
 983                         .lost            = perf_event__process_lost,
 984                         .read            = process_read_event,
 985                         .attr            = perf_event__process_attr,
 986                         .tracing_data    = perf_event__process_tracing_data,
 987                         .build_id        = perf_event__process_build_id,
 988                         .id_index        = perf_event__process_id_index,
 989                         .auxtrace_info   = perf_event__process_auxtrace_info,
 990                         .auxtrace        = perf_event__process_auxtrace,
 991                         .event_update    = perf_event__process_event_update,
 992                         .feature         = process_feature_event,
 993                         .ordered_events  = true,
 994                         .ordering_requires_timestamps = true,
 995                 },
 996                 .max_stack               = PERF_MAX_STACK_DEPTH,
 997                 .pretty_printing_style   = "normal",
 998                 .socket_filter           = -1,
 999                 .annotation_opts         = annotation__default_options,
1000         };
1001         const struct option options[] = {
1002         OPT_STRING('i', "input", &input_name, "file",
1003                     "input file name"),
1004         OPT_INCR('v', "verbose", &verbose,
1005                     "be more verbose (show symbol address, etc)"),
1006         OPT_BOOLEAN('q', "quiet", &quiet, "Do not show any message"),
1007         OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
1008                     "dump raw trace in ASCII"),
1009         OPT_BOOLEAN(0, "stats", &report.stats_mode, "Display event stats"),
1010         OPT_BOOLEAN(0, "tasks", &report.tasks_mode, "Display recorded tasks"),
1011         OPT_BOOLEAN(0, "mmaps", &report.mmaps_mode, "Display recorded tasks memory maps"),
1012         OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
1013                    "file", "vmlinux pathname"),
1014         OPT_BOOLEAN(0, "ignore-vmlinux", &symbol_conf.ignore_vmlinux,
1015                     "don't load vmlinux even if found"),
1016         OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name,
1017                    "file", "kallsyms pathname"),
1018         OPT_BOOLEAN('f', "force", &symbol_conf.force, "don't complain, do it"),
1019         OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
1020                     "load module symbols - WARNING: use only with -k and LIVE kernel"),
1021         OPT_BOOLEAN('n', "show-nr-samples", &symbol_conf.show_nr_samples,
1022                     "Show a column with the number of samples"),
1023         OPT_BOOLEAN('T', "threads", &report.show_threads,
1024                     "Show per-thread event counters"),
1025         OPT_STRING(0, "pretty", &report.pretty_printing_style, "key",
1026                    "pretty printing style key: normal raw"),
1027         OPT_BOOLEAN(0, "tui", &report.use_tui, "Use the TUI interface"),
1028         OPT_BOOLEAN(0, "gtk", &report.use_gtk, "Use the GTK2 interface"),
1029         OPT_BOOLEAN(0, "stdio", &report.use_stdio,
1030                     "Use the stdio interface"),
1031         OPT_BOOLEAN(0, "header", &report.header, "Show data header."),
1032         OPT_BOOLEAN(0, "header-only", &report.header_only,
1033                     "Show only data header."),
1034         OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
1035                    "sort by key(s): pid, comm, dso, symbol, parent, cpu, srcline, ..."
1036                    " Please refer the man page for the complete list."),
1037         OPT_STRING('F', "fields", &field_order, "key[,keys...]",
1038                    "output field(s): overhead, period, sample plus all of sort keys"),
1039         OPT_BOOLEAN(0, "show-cpu-utilization", &symbol_conf.show_cpu_utilization,
1040                     "Show sample percentage for different cpu modes"),
1041         OPT_BOOLEAN_FLAG(0, "showcpuutilization", &symbol_conf.show_cpu_utilization,
1042                     "Show sample percentage for different cpu modes", PARSE_OPT_HIDDEN),
1043         OPT_STRING('p', "parent", &parent_pattern, "regex",
1044                    "regex filter to identify parent, see: '--sort parent'"),
1045         OPT_BOOLEAN('x', "exclude-other", &symbol_conf.exclude_other,
1046                     "Only display entries with parent-match"),
1047         OPT_CALLBACK_DEFAULT('g', "call-graph", &callchain_param,
1048                              "print_type,threshold[,print_limit],order,sort_key[,branch],value",
1049                              report_callchain_help, &report_parse_callchain_opt,
1050                              callchain_default_opt),
1051         OPT_BOOLEAN(0, "children", &symbol_conf.cumulate_callchain,
1052                     "Accumulate callchains of children and show total overhead as well"),
1053         OPT_INTEGER(0, "max-stack", &report.max_stack,
1054                     "Set the maximum stack depth when parsing the callchain, "
1055                     "anything beyond the specified depth will be ignored. "
1056                     "Default: kernel.perf_event_max_stack or " __stringify(PERF_MAX_STACK_DEPTH)),
1057         OPT_BOOLEAN('G', "inverted", &report.inverted_callchain,
1058                     "alias for inverted call graph"),
1059         OPT_CALLBACK(0, "ignore-callees", NULL, "regex",
1060                    "ignore callees of these functions in call graphs",
1061                    report_parse_ignore_callees_opt),
1062         OPT_STRING('d', "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
1063                    "only consider symbols in these dsos"),
1064         OPT_STRING('c', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
1065                    "only consider symbols in these comms"),
1066         OPT_STRING(0, "pid", &symbol_conf.pid_list_str, "pid[,pid...]",
1067                    "only consider symbols in these pids"),
1068         OPT_STRING(0, "tid", &symbol_conf.tid_list_str, "tid[,tid...]",
1069                    "only consider symbols in these tids"),
1070         OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
1071                    "only consider these symbols"),
1072         OPT_STRING(0, "symbol-filter", &report.symbol_filter_str, "filter",
1073                    "only show symbols that (partially) match with this filter"),
1074         OPT_STRING('w', "column-widths", &symbol_conf.col_width_list_str,
1075                    "width[,width...]",
1076                    "don't try to adjust column width, use these fixed values"),
1077         OPT_STRING_NOEMPTY('t', "field-separator", &symbol_conf.field_sep, "separator",
1078                    "separator for columns, no spaces will be added between "
1079                    "columns '.' is reserved."),
1080         OPT_BOOLEAN('U', "hide-unresolved", &symbol_conf.hide_unresolved,
1081                     "Only display entries resolved to a symbol"),
1082         OPT_CALLBACK(0, "symfs", NULL, "directory",
1083                      "Look for files with symbols relative to this directory",
1084                      symbol__config_symfs),
1085         OPT_STRING('C', "cpu", &report.cpu_list, "cpu",
1086                    "list of cpus to profile"),
1087         OPT_BOOLEAN('I', "show-info", &report.show_full_info,
1088                     "Display extended information about perf.data file"),
1089         OPT_BOOLEAN(0, "source", &report.annotation_opts.annotate_src,
1090                     "Interleave source code with assembly code (default)"),
1091         OPT_BOOLEAN(0, "asm-raw", &report.annotation_opts.show_asm_raw,
1092                     "Display raw encoding of assembly instructions (default)"),
1093         OPT_STRING('M', "disassembler-style", &report.annotation_opts.disassembler_style, "disassembler style",
1094                    "Specify disassembler style (e.g. -M intel for intel syntax)"),
1095         OPT_BOOLEAN(0, "show-total-period", &symbol_conf.show_total_period,
1096                     "Show a column with the sum of periods"),
1097         OPT_BOOLEAN_SET(0, "group", &symbol_conf.event_group, &report.group_set,
1098                     "Show event group information together"),
1099         OPT_CALLBACK_NOOPT('b', "branch-stack", &branch_mode, "",
1100                     "use branch records for per branch histogram filling",
1101                     parse_branch_mode),
1102         OPT_BOOLEAN(0, "branch-history", &branch_call_mode,
1103                     "add last branch records to call history"),
1104         OPT_STRING(0, "objdump", &report.annotation_opts.objdump_path, "path",
1105                    "objdump binary to use for disassembly and annotations"),
1106         OPT_BOOLEAN(0, "demangle", &symbol_conf.demangle,
1107                     "Disable symbol demangling"),
1108         OPT_BOOLEAN(0, "demangle-kernel", &symbol_conf.demangle_kernel,
1109                     "Enable kernel symbol demangling"),
1110         OPT_BOOLEAN(0, "mem-mode", &report.mem_mode, "mem access profile"),
1111         OPT_CALLBACK(0, "percent-limit", &report, "percent",
1112                      "Don't show entries under that percent", parse_percent_limit),
1113         OPT_CALLBACK(0, "percentage", NULL, "relative|absolute",
1114                      "how to display percentage of filtered entries", parse_filter_percentage),
1115         OPT_CALLBACK_OPTARG(0, "itrace", &itrace_synth_opts, NULL, "opts",
1116                             "Instruction Tracing options",
1117                             itrace_parse_synth_opts),
1118         OPT_BOOLEAN(0, "full-source-path", &srcline_full_filename,
1119                         "Show full source file name path for source lines"),
1120         OPT_BOOLEAN(0, "show-ref-call-graph", &symbol_conf.show_ref_callgraph,
1121                     "Show callgraph from reference event"),
1122         OPT_INTEGER(0, "socket-filter", &report.socket_filter,
1123                     "only show processor socket that match with this filter"),
1124         OPT_BOOLEAN(0, "raw-trace", &symbol_conf.raw_trace,
1125                     "Show raw trace event output (do not use print fmt or plugins)"),
1126         OPT_BOOLEAN(0, "hierarchy", &symbol_conf.report_hierarchy,
1127                     "Show entries in a hierarchy"),
1128         OPT_CALLBACK_DEFAULT(0, "stdio-color", NULL, "mode",
1129                              "'always' (default), 'never' or 'auto' only applicable to --stdio mode",
1130                              stdio__config_color, "always"),
1131         OPT_STRING(0, "time", &report.time_str, "str",
1132                    "Time span of interest (start,stop)"),
1133         OPT_BOOLEAN(0, "inline", &symbol_conf.inline_name,
1134                     "Show inline function"),
1135         OPT_CALLBACK(0, "percent-type", &report.annotation_opts, "local-period",
1136                      "Set percent type local/global-period/hits",
1137                      annotate_parse_percent_type),
1138         OPT_END()
1139         };
1140         struct perf_data data = {
1141                 .mode  = PERF_DATA_MODE_READ,
1142         };
1143         int ret = hists__init();
1144
1145         if (ret < 0)
1146                 return ret;
1147
1148         ret = perf_config(report__config, &report);
1149         if (ret)
1150                 return ret;
1151
1152         argc = parse_options(argc, argv, options, report_usage, 0);
1153         if (argc) {
1154                 /*
1155                  * Special case: if there's an argument left then assume that
1156                  * it's a symbol filter:
1157                  */
1158                 if (argc > 1)
1159                         usage_with_options(report_usage, options);
1160
1161                 report.symbol_filter_str = argv[0];
1162         }
1163
1164         if (report.mmaps_mode)
1165                 report.tasks_mode = true;
1166
1167         if (quiet)
1168                 perf_quiet_option();
1169
1170         if (symbol_conf.vmlinux_name &&
1171             access(symbol_conf.vmlinux_name, R_OK)) {
1172                 pr_err("Invalid file: %s\n", symbol_conf.vmlinux_name);
1173                 return -EINVAL;
1174         }
1175         if (symbol_conf.kallsyms_name &&
1176             access(symbol_conf.kallsyms_name, R_OK)) {
1177                 pr_err("Invalid file: %s\n", symbol_conf.kallsyms_name);
1178                 return -EINVAL;
1179         }
1180
1181         if (report.inverted_callchain)
1182                 callchain_param.order = ORDER_CALLER;
1183         if (symbol_conf.cumulate_callchain && !callchain_param.order_set)
1184                 callchain_param.order = ORDER_CALLER;
1185
1186         if (itrace_synth_opts.callchain &&
1187             (int)itrace_synth_opts.callchain_sz > report.max_stack)
1188                 report.max_stack = itrace_synth_opts.callchain_sz;
1189
1190         if (!input_name || !strlen(input_name)) {
1191                 if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
1192                         input_name = "-";
1193                 else
1194                         input_name = "perf.data";
1195         }
1196
1197         data.file.path = input_name;
1198         data.force     = symbol_conf.force;
1199
1200 repeat:
1201         session = perf_session__new(&data, false, &report.tool);
1202         if (session == NULL)
1203                 return -1;
1204
1205         if (report.queue_size) {
1206                 ordered_events__set_alloc_size(&session->ordered_events,
1207                                                report.queue_size);
1208         }
1209
1210         session->itrace_synth_opts = &itrace_synth_opts;
1211
1212         report.session = session;
1213
1214         has_br_stack = perf_header__has_feat(&session->header,
1215                                              HEADER_BRANCH_STACK);
1216
1217         setup_forced_leader(&report, session->evlist);
1218
1219         if (itrace_synth_opts.last_branch)
1220                 has_br_stack = true;
1221
1222         if (has_br_stack && branch_call_mode)
1223                 symbol_conf.show_branchflag_count = true;
1224
1225         memset(&report.brtype_stat, 0, sizeof(struct branch_type_stat));
1226
1227         /*
1228          * Branch mode is a tristate:
1229          * -1 means default, so decide based on the file having branch data.
1230          * 0/1 means the user chose a mode.
1231          */
1232         if (((branch_mode == -1 && has_br_stack) || branch_mode == 1) &&
1233             !branch_call_mode) {
1234                 sort__mode = SORT_MODE__BRANCH;
1235                 symbol_conf.cumulate_callchain = false;
1236         }
1237         if (branch_call_mode) {
1238                 callchain_param.key = CCKEY_ADDRESS;
1239                 callchain_param.branch_callstack = 1;
1240                 symbol_conf.use_callchain = true;
1241                 callchain_register_param(&callchain_param);
1242                 if (sort_order == NULL)
1243                         sort_order = "srcline,symbol,dso";
1244         }
1245
1246         if (report.mem_mode) {
1247                 if (sort__mode == SORT_MODE__BRANCH) {
1248                         pr_err("branch and mem mode incompatible\n");
1249                         goto error;
1250                 }
1251                 sort__mode = SORT_MODE__MEMORY;
1252                 symbol_conf.cumulate_callchain = false;
1253         }
1254
1255         if (symbol_conf.report_hierarchy) {
1256                 /* disable incompatible options */
1257                 symbol_conf.cumulate_callchain = false;
1258
1259                 if (field_order) {
1260                         pr_err("Error: --hierarchy and --fields options cannot be used together\n");
1261                         parse_options_usage(report_usage, options, "F", 1);
1262                         parse_options_usage(NULL, options, "hierarchy", 0);
1263                         goto error;
1264                 }
1265
1266                 perf_hpp_list.need_collapse = true;
1267         }
1268
1269         if (report.use_stdio)
1270                 use_browser = 0;
1271         else if (report.use_tui)
1272                 use_browser = 1;
1273         else if (report.use_gtk)
1274                 use_browser = 2;
1275
1276         /* Force tty output for header output and per-thread stat. */
1277         if (report.header || report.header_only || report.show_threads)
1278                 use_browser = 0;
1279         if (report.header || report.header_only)
1280                 report.tool.show_feat_hdr = SHOW_FEAT_HEADER;
1281         if (report.show_full_info)
1282                 report.tool.show_feat_hdr = SHOW_FEAT_HEADER_FULL_INFO;
1283         if (report.stats_mode || report.tasks_mode)
1284                 use_browser = 0;
1285         if (report.stats_mode && report.tasks_mode) {
1286                 pr_err("Error: --tasks and --mmaps can't be used together with --stats\n");
1287                 goto error;
1288         }
1289
1290         if (strcmp(input_name, "-") != 0)
1291                 setup_browser(true);
1292         else
1293                 use_browser = 0;
1294
1295         if ((last_key != K_SWITCH_INPUT_DATA) &&
1296             (setup_sorting(session->evlist) < 0)) {
1297                 if (sort_order)
1298                         parse_options_usage(report_usage, options, "s", 1);
1299                 if (field_order)
1300                         parse_options_usage(sort_order ? NULL : report_usage,
1301                                             options, "F", 1);
1302                 goto error;
1303         }
1304
1305         if ((report.header || report.header_only) && !quiet) {
1306                 perf_session__fprintf_info(session, stdout,
1307                                            report.show_full_info);
1308                 if (report.header_only) {
1309                         ret = 0;
1310                         goto error;
1311                 }
1312         } else if (use_browser == 0 && !quiet &&
1313                    !report.stats_mode && !report.tasks_mode) {
1314                 fputs("# To display the perf.data header info, please use --header/--header-only options.\n#\n",
1315                       stdout);
1316         }
1317
1318         /*
1319          * Only in the TUI browser we are doing integrated annotation,
1320          * so don't allocate extra space that won't be used in the stdio
1321          * implementation.
1322          */
1323         if (ui__has_annotation()) {
1324                 ret = symbol__annotation_init();
1325                 if (ret < 0)
1326                         goto error;
1327                 /*
1328                  * For searching by name on the "Browse map details".
1329                  * providing it only in verbose mode not to bloat too
1330                  * much struct symbol.
1331                  */
1332                 if (verbose > 0) {
1333                         /*
1334                          * XXX: Need to provide a less kludgy way to ask for
1335                          * more space per symbol, the u32 is for the index on
1336                          * the ui browser.
1337                          * See symbol__browser_index.
1338                          */
1339                         symbol_conf.priv_size += sizeof(u32);
1340                         symbol_conf.sort_by_name = true;
1341                 }
1342                 annotation_config__init();
1343         }
1344
1345         if (symbol__init(&session->header.env) < 0)
1346                 goto error;
1347
1348         report.ptime_range = perf_time__range_alloc(report.time_str,
1349                                                     &report.range_size);
1350         if (!report.ptime_range) {
1351                 ret = -ENOMEM;
1352                 goto error;
1353         }
1354
1355         if (perf_time__parse_str(report.ptime_range, report.time_str) != 0) {
1356                 if (session->evlist->first_sample_time == 0 &&
1357                     session->evlist->last_sample_time == 0) {
1358                         pr_err("HINT: no first/last sample time found in perf data.\n"
1359                                "Please use latest perf binary to execute 'perf record'\n"
1360                                "(if '--buildid-all' is enabled, please set '--timestamp-boundary').\n");
1361                         ret = -EINVAL;
1362                         goto error;
1363                 }
1364
1365                 report.range_num = perf_time__percent_parse_str(
1366                                         report.ptime_range, report.range_size,
1367                                         report.time_str,
1368                                         session->evlist->first_sample_time,
1369                                         session->evlist->last_sample_time);
1370
1371                 if (report.range_num < 0) {
1372                         pr_err("Invalid time string\n");
1373                         ret = -EINVAL;
1374                         goto error;
1375                 }
1376         } else {
1377                 report.range_num = 1;
1378         }
1379
1380         if (session->tevent.pevent &&
1381             tep_set_function_resolver(session->tevent.pevent,
1382                                       machine__resolve_kernel_addr,
1383                                       &session->machines.host) < 0) {
1384                 pr_err("%s: failed to set libtraceevent function resolver\n",
1385                        __func__);
1386                 return -1;
1387         }
1388
1389         sort__setup_elide(stdout);
1390
1391         ret = __cmd_report(&report);
1392         if (ret == K_SWITCH_INPUT_DATA) {
1393                 perf_session__delete(session);
1394                 last_key = K_SWITCH_INPUT_DATA;
1395                 goto repeat;
1396         } else
1397                 ret = 0;
1398
1399 error:
1400         zfree(&report.ptime_range);
1401
1402         perf_session__delete(session);
1403         return ret;
1404 }