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