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/config.h"
  12
  13 #include "util/annotate.h"
  14 #include "util/color.h"
  15 #include "util/dso.h"
  16 #include <linux/list.h>
  17 #include <linux/rbtree.h>
  18 #include <linux/err.h>
  19 #include <linux/zalloc.h>
  20 #include "util/map.h"
  21 #include "util/symbol.h"
  22 #include "util/callchain.h"
  23 #include "util/values.h"
  24
  25 #include "perf.h"
  26 #include "util/debug.h"
  27 #include "util/evlist.h"
  28 #include "util/evsel.h"
  29 #include "util/evswitch.h"
  30 #include "util/header.h"
  31 #include "util/session.h"
  32 #include "util/srcline.h"
  33 #include "util/tool.h"
  34
  35 #include <subcmd/parse-options.h>
  36 #include <subcmd/exec-cmd.h>
  37 #include "util/parse-events.h"
  38
  39 #include "util/thread.h"
  40 #include "util/sort.h"
  41 #include "util/hist.h"
  42 #include "util/data.h"
  43 #include "arch/common.h"
  44 #include "util/time-utils.h"
  45 #include "util/auxtrace.h"
  46 #include "util/units.h"
  47 #include "util/branch.h"
  48 #include "util/util.h"
  49 #include "ui/ui.h"
  50 #include "ui/progress.h"
  51
  52 #include <dlfcn.h>
  53 #include <errno.h>
  54 #include <inttypes.h>
  55 #include <regex.h>
  56 #include <linux/ctype.h>
  57 #include <signal.h>
  58 #include <linux/bitmap.h>
  59 #include <linux/string.h>
  60 #include <linux/stringify.h>
  61 #include <linux/time64.h>
  62 #include <sys/types.h>
  63 #include <sys/stat.h>
  64 #include <unistd.h>
  65 #include <linux/mman.h>
  66
  67 struct report {
  68         struct perf_tool        tool;
  69         struct perf_session     *session;
  70         struct evswitch         evswitch;
  71         bool                    use_tui, use_gtk, use_stdio;
  72         bool                    show_full_info;
  73         bool                    show_threads;
  74         bool                    inverted_callchain;
  75         bool                    mem_mode;
  76         bool                    stats_mode;
  77         bool                    tasks_mode;
  78         bool                    mmaps_mode;
  79         bool                    header;
  80         bool                    header_only;
  81         bool                    nonany_branch_mode;
  82         bool                    group_set;
  83         int                     max_stack;
  84         struct perf_read_values show_threads_values;
  85         struct annotation_options annotation_opts;
  86         const char              *pretty_printing_style;
  87         const char              *cpu_list;
  88         const char              *symbol_filter_str;
  89         const char              *time_str;
  90         struct perf_time_interval *ptime_range;
  91         int                     range_size;
  92         int                     range_num;
  93         float                   min_percent;
  94         u64                     nr_entries;
  95         u64                     queue_size;
  96         int                     socket_filter;
  97         DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
  98         struct branch_type_stat brtype_stat;
  99         bool                    symbol_ipc;
 100 };
 101
 102 static int report__config(const char *var, const char *value, void *cb)
 103 {
 104         struct report *rep = cb;
 105
 106         if (!strcmp(var, "report.group")) {
 107                 symbol_conf.event_group = perf_config_bool(var, value);
 108                 return 0;
 109         }
 110         if (!strcmp(var, "report.percent-limit")) {
 111                 double pcnt = strtof(value, NULL);
 112
 113                 rep->min_percent = pcnt;
 114                 callchain_param.min_percent = pcnt;
 115                 return 0;
 116         }
 117         if (!strcmp(var, "report.children")) {
 118                 symbol_conf.cumulate_callchain = perf_config_bool(var, value);
 119                 return 0;
 120         }
 121         if (!strcmp(var, "report.queue-size"))
 122                 return perf_config_u64(&rep->queue_size, var, value);
 123
 124         if (!strcmp(var, "report.sort_order")) {
 125                 default_sort_order = strdup(value);
 126                 return 0;
 127         }
 128
 129         return 0;
 130 }
 131
 132 static int hist_iter__report_callback(struct hist_entry_iter *iter,
 133                                       struct addr_location *al, bool single,
 134                                       void *arg)
 135 {
 136         int err = 0;
 137         struct report *rep = arg;
 138         struct hist_entry *he = iter->he;
 139         struct evsel *evsel = iter->evsel;
 140         struct perf_sample *sample = iter->sample;
 141         struct mem_info *mi;
 142         struct branch_info *bi;
 143
 144         if (!ui__has_annotation() && !rep->symbol_ipc)
 145                 return 0;
 146
 147         if (sort__mode == SORT_MODE__BRANCH) {
 148                 bi = he->branch_info;
 149                 err = addr_map_symbol__inc_samples(&bi->from, sample, evsel);
 150                 if (err)
 151                         goto out;
 152
 153                 err = addr_map_symbol__inc_samples(&bi->to, sample, evsel);
 154
 155         } else if (rep->mem_mode) {
 156                 mi = he->mem_info;
 157                 err = addr_map_symbol__inc_samples(&mi->daddr, sample, evsel);
 158                 if (err)
 159                         goto out;
 160
 161                 err = hist_entry__inc_addr_samples(he, sample, evsel, al->addr);
 162
 163         } else if (symbol_conf.cumulate_callchain) {
 164                 if (single)
 165                         err = hist_entry__inc_addr_samples(he, sample, evsel, al->addr);
 166         } else {
 167                 err = hist_entry__inc_addr_samples(he, sample, evsel, al->addr);
 168         }
 169
 170 out:
 171         return err;
 172 }
 173
 174 static int hist_iter__branch_callback(struct hist_entry_iter *iter,
 175                                       struct addr_location *al __maybe_unused,
 176                                       bool single __maybe_unused,
 177                                       void *arg)
 178 {
 179         struct hist_entry *he = iter->he;
 180         struct report *rep = arg;
 181         struct branch_info *bi;
 182         struct perf_sample *sample = iter->sample;
 183         struct evsel *evsel = iter->evsel;
 184         int err;
 185
 186         if (!ui__has_annotation() && !rep->symbol_ipc)
 187                 return 0;
 188
 189         bi = he->branch_info;
 190         err = addr_map_symbol__inc_samples(&bi->from, sample, evsel);
 191         if (err)
 192                 goto out;
 193
 194         err = addr_map_symbol__inc_samples(&bi->to, sample, evsel);
 195
 196         branch_type_count(&rep->brtype_stat, &bi->flags,
 197                           bi->from.addr, bi->to.addr);
 198
 199 out:
 200         return err;
 201 }
 202
 203 static void setup_forced_leader(struct report *report,
 204                                 struct evlist *evlist)
 205 {
 206         if (report->group_set)
 207                 perf_evlist__force_leader(evlist);
 208 }
 209
 210 static int process_feature_event(struct perf_session *session,
 211                                  union perf_event *event)
 212 {
 213         struct report *rep = container_of(session->tool, struct report, tool);
 214
 215         if (event->feat.feat_id < HEADER_LAST_FEATURE)
 216                 return perf_event__process_feature(session, event);
 217
 218         if (event->feat.feat_id != HEADER_LAST_FEATURE) {
 219                 pr_err("failed: wrong feature ID: %" PRI_lu64 "\n",
 220                        event->feat.feat_id);
 221                 return -1;
 222         }
 223
 224         /*
 225          * (feat_id = HEADER_LAST_FEATURE) is the end marker which
 226          * means all features are received, now we can force the
 227          * group if needed.
 228          */
 229         setup_forced_leader(rep, session->evlist);
 230         return 0;
 231 }
 232
 233 static int process_sample_event(struct perf_tool *tool,
 234                                 union perf_event *event,
 235                                 struct perf_sample *sample,
 236                                 struct evsel *evsel,
 237                                 struct machine *machine)
 238 {
 239         struct report *rep = container_of(tool, struct report, tool);
 240         struct addr_location al;
 241         struct hist_entry_iter iter = {
 242                 .evsel                  = evsel,
 243                 .sample                 = sample,
 244                 .hide_unresolved        = symbol_conf.hide_unresolved,
 245                 .add_entry_cb           = hist_iter__report_callback,
 246         };
 247         int ret = 0;
 248
 249         if (perf_time__ranges_skip_sample(rep->ptime_range, rep->range_num,
 250                                           sample->time)) {
 251                 return 0;
 252         }
 253
 254         if (evswitch__discard(&rep->evswitch, evsel))
 255                 return 0;
 256
 257         if (machine__resolve(machine, &al, sample) < 0) {
 258                 pr_debug("problem processing %d event, skipping it.\n",
 259                          event->header.type);
 260                 return -1;
 261         }
 262
 263         if (symbol_conf.hide_unresolved && al.sym == NULL)
 264                 goto out_put;
 265
 266         if (rep->cpu_list && !test_bit(sample->cpu, rep->cpu_bitmap))
 267                 goto out_put;
 268
 269         if (sort__mode == SORT_MODE__BRANCH) {
 270                 /*
 271                  * A non-synthesized event might not have a branch stack if
 272                  * branch stacks have been synthesized (using itrace options).
 273                  */
 274                 if (!sample->branch_stack)
 275                         goto out_put;
 276
 277                 iter.add_entry_cb = hist_iter__branch_callback;
 278                 iter.ops = &hist_iter_branch;
 279         } else if (rep->mem_mode) {
 280                 iter.ops = &hist_iter_mem;
 281         } else if (symbol_conf.cumulate_callchain) {
 282                 iter.ops = &hist_iter_cumulative;
 283         } else {
 284                 iter.ops = &hist_iter_normal;
 285         }
 286
 287         if (al.map != NULL)
 288                 al.map->dso->hit = 1;
 289
 290         if (ui__has_annotation() || rep->symbol_ipc) {
 291                 hist__account_cycles(sample->branch_stack, &al, sample,
 292                                      rep->nonany_branch_mode);
 293         }
 294
 295         ret = hist_entry_iter__add(&iter, &al, rep->max_stack, rep);
 296         if (ret < 0)
 297                 pr_debug("problem adding hist entry, skipping event\n");
 298 out_put:
 299         addr_location__put(&al);
 300         return ret;
 301 }
 302
 303 static int process_read_event(struct perf_tool *tool,
 304                               union perf_event *event,
 305                               struct perf_sample *sample __maybe_unused,
 306                               struct evsel *evsel,
 307                               struct machine *machine __maybe_unused)
 308 {
 309         struct report *rep = container_of(tool, struct report, tool);
 310
 311         if (rep->show_threads) {
 312                 const char *name = perf_evsel__name(evsel);
 313                 int err = perf_read_values_add_value(&rep->show_threads_values,
 314                                            event->read.pid, event->read.tid,
 315                                            evsel->idx,
 316                                            name,
 317                                            event->read.value);
 318
 319                 if (err)
 320                         return err;
 321         }
 322
 323         return 0;
 324 }
 325
 326 /* For pipe mode, sample_type is not currently set */
 327 static int report__setup_sample_type(struct report *rep)
 328 {
 329         struct perf_session *session = rep->session;
 330         u64 sample_type = perf_evlist__combined_sample_type(session->evlist);
 331         bool is_pipe = perf_data__is_pipe(session->data);
 332
 333         if (session->itrace_synth_opts->callchain ||
 334             (!is_pipe &&
 335              perf_header__has_feat(&session->header, HEADER_AUXTRACE) &&
 336              !session->itrace_synth_opts->set))
 337                 sample_type |= PERF_SAMPLE_CALLCHAIN;
 338
 339         if (session->itrace_synth_opts->last_branch)
 340                 sample_type |= PERF_SAMPLE_BRANCH_STACK;
 341
 342         if (!is_pipe && !(sample_type & PERF_SAMPLE_CALLCHAIN)) {
 343                 if (perf_hpp_list.parent) {
 344                         ui__error("Selected --sort parent, but no "
 345                                     "callchain data. Did you call "
 346                                     "'perf record' without -g?\n");
 347                         return -EINVAL;
 348                 }
 349                 if (symbol_conf.use_callchain &&
 350                         !symbol_conf.show_branchflag_count) {
 351                         ui__error("Selected -g or --branch-history.\n"
 352                                   "But no callchain or branch data.\n"
 353                                   "Did you call 'perf record' without -g or -b?\n");
 354                         return -1;
 355                 }
 356         } else if (!callchain_param.enabled &&
 357                    callchain_param.mode != CHAIN_NONE &&
 358                    !symbol_conf.use_callchain) {
 359                         symbol_conf.use_callchain = true;
 360                         if (callchain_register_param(&callchain_param) < 0) {
 361                                 ui__error("Can't register callchain params.\n");
 362                                 return -EINVAL;
 363                         }
 364         }
 365
 366         if (symbol_conf.cumulate_callchain) {
 367                 /* Silently ignore if callchain is missing */
 368                 if (!(sample_type & PERF_SAMPLE_CALLCHAIN)) {
 369                         symbol_conf.cumulate_callchain = false;
 370                         perf_hpp__cancel_cumulate();
 371                 }
 372         }
 373
 374         if (sort__mode == SORT_MODE__BRANCH) {
 375                 if (!is_pipe &&
 376                     !(sample_type & PERF_SAMPLE_BRANCH_STACK)) {
 377                         ui__error("Selected -b but no branch data. "
 378                                   "Did you call perf record without -b?\n");
 379                         return -1;
 380                 }
 381         }
 382
 383         if (symbol_conf.use_callchain || symbol_conf.cumulate_callchain) {
 384                 if ((sample_type & PERF_SAMPLE_REGS_USER) &&
 385                     (sample_type & PERF_SAMPLE_STACK_USER)) {
 386                         callchain_param.record_mode = CALLCHAIN_DWARF;
 387                         dwarf_callchain_users = true;
 388                 } else if (sample_type & PERF_SAMPLE_BRANCH_STACK)
 389                         callchain_param.record_mode = CALLCHAIN_LBR;
 390                 else
 391                         callchain_param.record_mode = CALLCHAIN_FP;
 392         }
 393
 394         /* ??? handle more cases than just ANY? */
 395         if (!(perf_evlist__combined_branch_type(session->evlist) &
 396                                 PERF_SAMPLE_BRANCH_ANY))
 397                 rep->nonany_branch_mode = true;
 398
 399         return 0;
 400 }
 401
 402 static void sig_handler(int sig __maybe_unused)
 403 {
 404         session_done = 1;
 405 }
 406
 407 static size_t hists__fprintf_nr_sample_events(struct hists *hists, struct report *rep,
 408                                               const char *evname, FILE *fp)
 409 {
 410         size_t ret;
 411         char unit;
 412         unsigned long nr_samples = hists->stats.nr_events[PERF_RECORD_SAMPLE];
 413         u64 nr_events = hists->stats.total_period;
 414         struct evsel *evsel = hists_to_evsel(hists);
 415         char buf[512];
 416         size_t size = sizeof(buf);
 417         int socked_id = hists->socket_filter;
 418
 419         if (quiet)
 420                 return 0;
 421
 422         if (symbol_conf.filter_relative) {
 423                 nr_samples = hists->stats.nr_non_filtered_samples;
 424                 nr_events = hists->stats.total_non_filtered_period;
 425         }
 426
 427         if (perf_evsel__is_group_event(evsel)) {
 428                 struct evsel *pos;
 429
 430                 perf_evsel__group_desc(evsel, buf, size);
 431                 evname = buf;
 432
 433                 for_each_group_member(pos, evsel) {
 434                         const struct hists *pos_hists = evsel__hists(pos);
 435
 436                         if (symbol_conf.filter_relative) {
 437                                 nr_samples += pos_hists->stats.nr_non_filtered_samples;
 438                                 nr_events += pos_hists->stats.total_non_filtered_period;
 439                         } else {
 440                                 nr_samples += pos_hists->stats.nr_events[PERF_RECORD_SAMPLE];
 441                                 nr_events += pos_hists->stats.total_period;
 442                         }
 443                 }
 444         }
 445
 446         nr_samples = convert_unit(nr_samples, &unit);
 447         ret = fprintf(fp, "# Samples: %lu%c", nr_samples, unit);
 448         if (evname != NULL) {
 449                 ret += fprintf(fp, " of event%s '%s'",
 450                                evsel->core.nr_members > 1 ? "s" : "", evname);
 451         }
 452
 453         if (rep->time_str)
 454                 ret += fprintf(fp, " (time slices: %s)", rep->time_str);
 455
 456         if (symbol_conf.show_ref_callgraph &&
 457             strstr(evname, "call-graph=no")) {
 458                 ret += fprintf(fp, ", show reference callgraph");
 459         }
 460
 461         if (rep->mem_mode) {
 462                 ret += fprintf(fp, "\n# Total weight : %" PRIu64, nr_events);
 463                 ret += fprintf(fp, "\n# Sort order   : %s", sort_order ? : default_mem_sort_order);
 464         } else
 465                 ret += fprintf(fp, "\n# Event count (approx.): %" PRIu64, nr_events);
 466
 467         if (socked_id > -1)
 468                 ret += fprintf(fp, "\n# Processor Socket: %d", socked_id);
 469
 470         return ret + fprintf(fp, "\n#\n");
 471 }
 472
 473 static int perf_evlist__tty_browse_hists(struct evlist *evlist,
 474                                          struct report *rep,
 475                                          const char *help)
 476 {
 477         struct evsel *pos;
 478
 479         if (!quiet) {
 480                 fprintf(stdout, "#\n# Total Lost Samples: %" PRIu64 "\n#\n",
 481                         evlist->stats.total_lost_samples);
 482         }
 483
 484         evlist__for_each_entry(evlist, pos) {
 485                 struct hists *hists = evsel__hists(pos);
 486                 const char *evname = perf_evsel__name(pos);
 487
 488                 if (symbol_conf.event_group &&
 489                     !perf_evsel__is_group_leader(pos))
 490                         continue;
 491
 492                 hists__fprintf_nr_sample_events(hists, rep, evname, stdout);
 493                 hists__fprintf(hists, !quiet, 0, 0, rep->min_percent, stdout,
 494                                !(symbol_conf.use_callchain ||
 495                                  symbol_conf.show_branchflag_count));
 496                 fprintf(stdout, "\n\n");
 497         }
 498
 499         if (!quiet)
 500                 fprintf(stdout, "#\n# (%s)\n#\n", help);
 501
 502         if (rep->show_threads) {
 503                 bool style = !strcmp(rep->pretty_printing_style, "raw");
 504                 perf_read_values_display(stdout, &rep->show_threads_values,
 505                                          style);
 506                 perf_read_values_destroy(&rep->show_threads_values);
 507         }
 508
 509         if (sort__mode == SORT_MODE__BRANCH)
 510                 branch_type_stat_display(stdout, &rep->brtype_stat);
 511
 512         return 0;
 513 }
 514
 515 static void report__warn_kptr_restrict(const struct report *rep)
 516 {
 517         struct map *kernel_map = machine__kernel_map(&rep->session->machines.host);
 518         struct kmap *kernel_kmap = kernel_map ? map__kmap(kernel_map) : NULL;
 519
 520         if (perf_evlist__exclude_kernel(rep->session->evlist))
 521                 return;
 522
 523         if (kernel_map == NULL ||
 524             (kernel_map->dso->hit &&
 525              (kernel_kmap->ref_reloc_sym == NULL ||
 526               kernel_kmap->ref_reloc_sym->addr == 0))) {
 527                 const char *desc =
 528                     "As no suitable kallsyms nor vmlinux was found, kernel samples\n"
 529                     "can't be resolved.";
 530
 531                 if (kernel_map && map__has_symbols(kernel_map)) {
 532                         desc = "If some relocation was applied (e.g. "
 533                                "kexec) symbols may be misresolved.";
 534                 }
 535
 536                 ui__warning(
 537 "Kernel address maps (/proc/{kallsyms,modules}) were restricted.\n\n"
 538 "Check /proc/sys/kernel/kptr_restrict before running 'perf record'.\n\n%s\n\n"
 539 "Samples in kernel modules can't be resolved as well.\n\n",
 540                 desc);
 541         }
 542 }
 543
 544 static int report__gtk_browse_hists(struct report *rep, const char *help)
 545 {
 546         int (*hist_browser)(struct evlist *evlist, const char *help,
 547                             struct hist_browser_timer *timer, float min_pcnt);
 548
 549         hist_browser = dlsym(perf_gtk_handle, "perf_evlist__gtk_browse_hists");
 550
 551         if (hist_browser == NULL) {
 552                 ui__error("GTK browser not found!\n");
 553                 return -1;
 554         }
 555
 556         return hist_browser(rep->session->evlist, help, NULL, rep->min_percent);
 557 }
 558
 559 static int report__browse_hists(struct report *rep)
 560 {
 561         int ret;
 562         struct perf_session *session = rep->session;
 563         struct evlist *evlist = session->evlist;
 564         const char *help = perf_tip(system_path(TIPDIR));
 565
 566         if (help == NULL) {
 567                 /* fallback for people who don't install perf ;-) */
 568                 help = perf_tip(DOCDIR);
 569                 if (help == NULL)
 570                         help = "Cannot load tips.txt file, please install perf!";
 571         }
 572
 573         switch (use_browser) {
 574         case 1:
 575                 ret = perf_evlist__tui_browse_hists(evlist, help, NULL,
 576                                                     rep->min_percent,
 577                                                     &session->header.env,
 578                                                     true, &rep->annotation_opts);
 579                 /*
 580                  * Usually "ret" is the last pressed key, and we only
 581                  * care if the key notifies us to switch data file.
 582                  */
 583                 if (ret != K_SWITCH_INPUT_DATA)
 584                         ret = 0;
 585                 break;
 586         case 2:
 587                 ret = report__gtk_browse_hists(rep, help);
 588                 break;
 589         default:
 590                 ret = perf_evlist__tty_browse_hists(evlist, rep, help);
 591                 break;
 592         }
 593
 594         return ret;
 595 }
 596
 597 static int report__collapse_hists(struct report *rep)
 598 {
 599         struct ui_progress prog;
 600         struct evsel *pos;
 601         int ret = 0;
 602
 603         ui_progress__init(&prog, rep->nr_entries, "Merging related events...");
 604
 605         evlist__for_each_entry(rep->session->evlist, pos) {
 606                 struct hists *hists = evsel__hists(pos);
 607
 608                 if (pos->idx == 0)
 609                         hists->symbol_filter_str = rep->symbol_filter_str;
 610
 611                 hists->socket_filter = rep->socket_filter;
 612
 613                 ret = hists__collapse_resort(hists, &prog);
 614                 if (ret < 0)
 615                         break;
 616
 617                 /* Non-group events are considered as leader */
 618                 if (symbol_conf.event_group &&
 619                     !perf_evsel__is_group_leader(pos)) {
 620                         struct hists *leader_hists = evsel__hists(pos->leader);
 621
 622                         hists__match(leader_hists, hists);
 623                         hists__link(leader_hists, hists);
 624                 }
 625         }
 626
 627         ui_progress__finish();
 628         return ret;
 629 }
 630
 631 static int hists__resort_cb(struct hist_entry *he, void *arg)
 632 {
 633         struct report *rep = arg;
 634         struct symbol *sym = he->ms.sym;
 635
 636         if (rep->symbol_ipc && sym && !sym->annotate2) {
 637                 struct evsel *evsel = hists_to_evsel(he->hists);
 638
 639                 symbol__annotate2(sym, he->ms.map, evsel,
 640                                   &annotation__default_options, NULL);
 641         }
 642
 643         return 0;
 644 }
 645
 646 static void report__output_resort(struct report *rep)
 647 {
 648         struct ui_progress prog;
 649         struct evsel *pos;
 650
 651         ui_progress__init(&prog, rep->nr_entries, "Sorting events for output...");
 652
 653         evlist__for_each_entry(rep->session->evlist, pos) {
 654                 perf_evsel__output_resort_cb(pos, &prog,
 655                                              hists__resort_cb, rep);
 656         }
 657
 658         ui_progress__finish();
 659 }
 660
 661 static void stats_setup(struct report *rep)
 662 {
 663         memset(&rep->tool, 0, sizeof(rep->tool));
 664         rep->tool.no_warn = true;
 665 }
 666
 667 static int stats_print(struct report *rep)
 668 {
 669         struct perf_session *session = rep->session;
 670
 671         perf_session__fprintf_nr_events(session, stdout);
 672         return 0;
 673 }
 674
 675 static void tasks_setup(struct report *rep)
 676 {
 677         memset(&rep->tool, 0, sizeof(rep->tool));
 678         rep->tool.ordered_events = true;
 679         if (rep->mmaps_mode) {
 680                 rep->tool.mmap = perf_event__process_mmap;
 681                 rep->tool.mmap2 = perf_event__process_mmap2;
 682         }
 683         rep->tool.comm = perf_event__process_comm;
 684         rep->tool.exit = perf_event__process_exit;
 685         rep->tool.fork = perf_event__process_fork;
 686         rep->tool.no_warn = true;
 687 }
 688
 689 struct task {
 690         struct thread           *thread;
 691         struct list_head         list;
 692         struct list_head         children;
 693 };
 694
 695 static struct task *tasks_list(struct task *task, struct machine *machine)
 696 {
 697         struct thread *parent_thread, *thread = task->thread;
 698         struct task   *parent_task;
 699
 700         /* Already listed. */
 701         if (!list_empty(&task->list))
 702                 return NULL;
 703
 704         /* Last one in the chain. */
 705         if (thread->ppid == -1)
 706                 return task;
 707
 708         parent_thread = machine__find_thread(machine, -1, thread->ppid);
 709         if (!parent_thread)
 710                 return ERR_PTR(-ENOENT);
 711
 712         parent_task = thread__priv(parent_thread);
 713         list_add_tail(&task->list, &parent_task->children);
 714         return tasks_list(parent_task, machine);
 715 }
 716
 717 static size_t maps__fprintf_task(struct maps *maps, int indent, FILE *fp)
 718 {
 719         size_t printed = 0;
 720         struct rb_node *nd;
 721
 722         for (nd = rb_first(&maps->entries); nd; nd = rb_next(nd)) {
 723                 struct map *map = rb_entry(nd, struct map, rb_node);
 724
 725                 printed += fprintf(fp, "%*s  %" PRIx64 "-%" PRIx64 " %c%c%c%c %08" PRIx64 " %" PRIu64 " %s\n",
 726                                    indent, "", map->start, map->end,
 727                                    map->prot & PROT_READ ? 'r' : '-',
 728                                    map->prot & PROT_WRITE ? 'w' : '-',
 729                                    map->prot & PROT_EXEC ? 'x' : '-',
 730                                    map->flags & MAP_SHARED ? 's' : 'p',
 731                                    map->pgoff,
 732                                    map->ino, map->dso->name);
 733         }
 734
 735         return printed;
 736 }
 737
 738 static int map_groups__fprintf_task(struct map_groups *mg, int indent, FILE *fp)
 739 {
 740         return maps__fprintf_task(&mg->maps, indent, fp);
 741 }
 742
 743 static void task__print_level(struct task *task, FILE *fp, int level)
 744 {
 745         struct thread *thread = task->thread;
 746         struct task *child;
 747         int comm_indent = fprintf(fp, "  %8d %8d %8d |%*s",
 748                                   thread->pid_, thread->tid, thread->ppid,
 749                                   level, "");
 750
 751         fprintf(fp, "%s\n", thread__comm_str(thread));
 752
 753         map_groups__fprintf_task(thread->mg, comm_indent, fp);
 754
 755         if (!list_empty(&task->children)) {
 756                 list_for_each_entry(child, &task->children, list)
 757                         task__print_level(child, fp, level + 1);
 758         }
 759 }
 760
 761 static int tasks_print(struct report *rep, FILE *fp)
 762 {
 763         struct perf_session *session = rep->session;
 764         struct machine      *machine = &session->machines.host;
 765         struct task *tasks, *task;
 766         unsigned int nr = 0, itask = 0, i;
 767         struct rb_node *nd;
 768         LIST_HEAD(list);
 769
 770         /*
 771          * No locking needed while accessing machine->threads,
 772          * because --tasks is single threaded command.
 773          */
 774
 775         /* Count all the threads. */
 776         for (i = 0; i < THREADS__TABLE_SIZE; i++)
 777                 nr += machine->threads[i].nr;
 778
 779         tasks = malloc(sizeof(*tasks) * nr);
 780         if (!tasks)
 781                 return -ENOMEM;
 782
 783         for (i = 0; i < THREADS__TABLE_SIZE; i++) {
 784                 struct threads *threads = &machine->threads[i];
 785
 786                 for (nd = rb_first_cached(&threads->entries); nd;
 787                      nd = rb_next(nd)) {
 788                         task = tasks + itask++;
 789
 790                         task->thread = rb_entry(nd, struct thread, rb_node);
 791                         INIT_LIST_HEAD(&task->children);
 792                         INIT_LIST_HEAD(&task->list);
 793                         thread__set_priv(task->thread, task);
 794                 }
 795         }
 796
 797         /*
 798          * Iterate every task down to the unprocessed parent
 799          * and link all in task children list. Task with no
 800          * parent is added into 'list'.
 801          */
 802         for (itask = 0; itask < nr; itask++) {
 803                 task = tasks + itask;
 804
 805                 if (!list_empty(&task->list))
 806                         continue;
 807
 808                 task = tasks_list(task, machine);
 809                 if (IS_ERR(task)) {
 810                         pr_err("Error: failed to process tasks\n");
 811                         free(tasks);
 812                         return PTR_ERR(task);
 813                 }
 814
 815                 if (task)
 816                         list_add_tail(&task->list, &list);
 817         }
 818
 819         fprintf(fp, "# %8s %8s %8s  %s\n", "pid", "tid", "ppid", "comm");
 820
 821         list_for_each_entry(task, &list, list)
 822                 task__print_level(task, fp, 0);
 823
 824         free(tasks);
 825         return 0;
 826 }
 827
 828 static int __cmd_report(struct report *rep)
 829 {
 830         int ret;
 831         struct perf_session *session = rep->session;
 832         struct evsel *pos;
 833         struct perf_data *data = session->data;
 834
 835         signal(SIGINT, sig_handler);
 836
 837         if (rep->cpu_list) {
 838                 ret = perf_session__cpu_bitmap(session, rep->cpu_list,
 839                                                rep->cpu_bitmap);
 840                 if (ret) {
 841                         ui__error("failed to set cpu bitmap\n");
 842                         return ret;
 843                 }
 844                 session->itrace_synth_opts->cpu_bitmap = rep->cpu_bitmap;
 845         }
 846
 847         if (rep->show_threads) {
 848                 ret = perf_read_values_init(&rep->show_threads_values);
 849                 if (ret)
 850                         return ret;
 851         }
 852
 853         ret = report__setup_sample_type(rep);
 854         if (ret) {
 855                 /* report__setup_sample_type() already showed error message */
 856                 return ret;
 857         }
 858
 859         if (rep->stats_mode)
 860                 stats_setup(rep);
 861
 862         if (rep->tasks_mode)
 863                 tasks_setup(rep);
 864
 865         ret = perf_session__process_events(session);
 866         if (ret) {
 867                 ui__error("failed to process sample\n");
 868                 return ret;
 869         }
 870
 871         if (rep->stats_mode)
 872                 return stats_print(rep);
 873
 874         if (rep->tasks_mode)
 875                 return tasks_print(rep, stdout);
 876
 877         report__warn_kptr_restrict(rep);
 878
 879         evlist__for_each_entry(session->evlist, pos)
 880                 rep->nr_entries += evsel__hists(pos)->nr_entries;
 881
 882         if (use_browser == 0) {
 883                 if (verbose > 3)
 884                         perf_session__fprintf(session, stdout);
 885
 886                 if (verbose > 2)
 887                         perf_session__fprintf_dsos(session, stdout);
 888
 889                 if (dump_trace) {
 890                         perf_session__fprintf_nr_events(session, stdout);
 891                         perf_evlist__fprintf_nr_events(session->evlist, stdout);
 892                         return 0;
 893                 }
 894         }
 895
 896         ret = report__collapse_hists(rep);
 897         if (ret) {
 898                 ui__error("failed to process hist entry\n");
 899                 return ret;
 900         }
 901
 902         if (session_done())
 903                 return 0;
 904
 905         /*
 906          * recalculate number of entries after collapsing since it
 907          * might be changed during the collapse phase.
 908          */
 909         rep->nr_entries = 0;
 910         evlist__for_each_entry(session->evlist, pos)
 911                 rep->nr_entries += evsel__hists(pos)->nr_entries;
 912
 913         if (rep->nr_entries == 0) {
 914                 ui__error("The %s data has no samples!\n", data->path);
 915                 return 0;
 916         }
 917
 918         report__output_resort(rep);
 919
 920         return report__browse_hists(rep);
 921 }
 922
 923 static int
 924 report_parse_callchain_opt(const struct option *opt, const char *arg, int unset)
 925 {
 926         struct callchain_param *callchain = opt->value;
 927
 928         callchain->enabled = !unset;
 929         /*
 930          * --no-call-graph
 931          */
 932         if (unset) {
 933                 symbol_conf.use_callchain = false;
 934                 callchain->mode = CHAIN_NONE;
 935                 return 0;
 936         }
 937
 938         return parse_callchain_report_opt(arg);
 939 }
 940
 941 static int
 942 parse_time_quantum(const struct option *opt, const char *arg,
 943                    int unset __maybe_unused)
 944 {
 945         unsigned long *time_q = opt->value;
 946         char *end;
 947
 948         *time_q = strtoul(arg, &end, 0);
 949         if (end == arg)
 950                 goto parse_err;
 951         if (*time_q == 0) {
 952                 pr_err("time quantum cannot be 0");
 953                 return -1;
 954         }
 955         end = skip_spaces(end);
 956         if (*end == 0)
 957                 return 0;
 958         if (!strcmp(end, "s")) {
 959                 *time_q *= NSEC_PER_SEC;
 960                 return 0;
 961         }
 962         if (!strcmp(end, "ms")) {
 963                 *time_q *= NSEC_PER_MSEC;
 964                 return 0;
 965         }
 966         if (!strcmp(end, "us")) {
 967                 *time_q *= NSEC_PER_USEC;
 968                 return 0;
 969         }
 970         if (!strcmp(end, "ns"))
 971                 return 0;
 972 parse_err:
 973         pr_err("Cannot parse time quantum `%s'\n", arg);
 974         return -1;
 975 }
 976
 977 int
 978 report_parse_ignore_callees_opt(const struct option *opt __maybe_unused,
 979                                 const char *arg, int unset __maybe_unused)
 980 {
 981         if (arg) {
 982                 int err = regcomp(&ignore_callees_regex, arg, REG_EXTENDED);
 983                 if (err) {
 984                         char buf[BUFSIZ];
 985                         regerror(err, &ignore_callees_regex, buf, sizeof(buf));
 986                         pr_err("Invalid --ignore-callees regex: %s\n%s", arg, buf);
 987                         return -1;
 988                 }
 989                 have_ignore_callees = 1;
 990         }
 991
 992         return 0;
 993 }
 994
 995 static int
 996 parse_branch_mode(const struct option *opt,
 997                   const char *str __maybe_unused, int unset)
 998 {
 999         int *branch_mode = opt->value;
1000
1001         *branch_mode = !unset;
1002         return 0;
1003 }
1004
1005 static int
1006 parse_percent_limit(const struct option *opt, const char *str,
1007                     int unset __maybe_unused)
1008 {
1009         struct report *rep = opt->value;
1010         double pcnt = strtof(str, NULL);
1011
1012         rep->min_percent = pcnt;
1013         callchain_param.min_percent = pcnt;
1014         return 0;
1015 }
1016
1017 int cmd_report(int argc, const char **argv)
1018 {
1019         struct perf_session *session;
1020         struct itrace_synth_opts itrace_synth_opts = { .set = 0, };
1021         struct stat st;
1022         bool has_br_stack = false;
1023         int branch_mode = -1;
1024         bool branch_call_mode = false;
1025 #define CALLCHAIN_DEFAULT_OPT  "graph,0.5,caller,function,percent"
1026         static const char report_callchain_help[] = "Display call graph (stack chain/backtrace):\n\n"
1027                                                     CALLCHAIN_REPORT_HELP
1028                                                     "\n\t\t\t\tDefault: " CALLCHAIN_DEFAULT_OPT;
1029         char callchain_default_opt[] = CALLCHAIN_DEFAULT_OPT;
1030         const char * const report_usage[] = {
1031                 "perf report [<options>]",
1032                 NULL
1033         };
1034         struct report report = {
1035                 .tool = {
1036                         .sample          = process_sample_event,
1037                         .mmap            = perf_event__process_mmap,
1038                         .mmap2           = perf_event__process_mmap2,
1039                         .comm            = perf_event__process_comm,
1040                         .namespaces      = perf_event__process_namespaces,
1041                         .exit            = perf_event__process_exit,
1042                         .fork            = perf_event__process_fork,
1043                         .lost            = perf_event__process_lost,
1044                         .read            = process_read_event,
1045                         .attr            = perf_event__process_attr,
1046                         .tracing_data    = perf_event__process_tracing_data,
1047                         .build_id        = perf_event__process_build_id,
1048                         .id_index        = perf_event__process_id_index,
1049                         .auxtrace_info   = perf_event__process_auxtrace_info,
1050                         .auxtrace        = perf_event__process_auxtrace,
1051                         .event_update    = perf_event__process_event_update,
1052                         .feature         = process_feature_event,
1053                         .ordered_events  = true,
1054                         .ordering_requires_timestamps = true,
1055                 },
1056                 .max_stack               = PERF_MAX_STACK_DEPTH,
1057                 .pretty_printing_style   = "normal",
1058                 .socket_filter           = -1,
1059                 .annotation_opts         = annotation__default_options,
1060         };
1061         const struct option options[] = {
1062         OPT_STRING('i', "input", &input_name, "file",
1063                     "input file name"),
1064         OPT_INCR('v', "verbose", &verbose,
1065                     "be more verbose (show symbol address, etc)"),
1066         OPT_BOOLEAN('q', "quiet", &quiet, "Do not show any message"),
1067         OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
1068                     "dump raw trace in ASCII"),
1069         OPT_BOOLEAN(0, "stats", &report.stats_mode, "Display event stats"),
1070         OPT_BOOLEAN(0, "tasks", &report.tasks_mode, "Display recorded tasks"),
1071         OPT_BOOLEAN(0, "mmaps", &report.mmaps_mode, "Display recorded tasks memory maps"),
1072         OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
1073                    "file", "vmlinux pathname"),
1074         OPT_BOOLEAN(0, "ignore-vmlinux", &symbol_conf.ignore_vmlinux,
1075                     "don't load vmlinux even if found"),
1076         OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name,
1077                    "file", "kallsyms pathname"),
1078         OPT_BOOLEAN('f', "force", &symbol_conf.force, "don't complain, do it"),
1079         OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
1080                     "load module symbols - WARNING: use only with -k and LIVE kernel"),
1081         OPT_BOOLEAN('n', "show-nr-samples", &symbol_conf.show_nr_samples,
1082                     "Show a column with the number of samples"),
1083         OPT_BOOLEAN('T', "threads", &report.show_threads,
1084                     "Show per-thread event counters"),
1085         OPT_STRING(0, "pretty", &report.pretty_printing_style, "key",
1086                    "pretty printing style key: normal raw"),
1087         OPT_BOOLEAN(0, "tui", &report.use_tui, "Use the TUI interface"),
1088         OPT_BOOLEAN(0, "gtk", &report.use_gtk, "Use the GTK2 interface"),
1089         OPT_BOOLEAN(0, "stdio", &report.use_stdio,
1090                     "Use the stdio interface"),
1091         OPT_BOOLEAN(0, "header", &report.header, "Show data header."),
1092         OPT_BOOLEAN(0, "header-only", &report.header_only,
1093                     "Show only data header."),
1094         OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
1095                    sort_help("sort by key(s):")),
1096         OPT_STRING('F', "fields", &field_order, "key[,keys...]",
1097                    sort_help("output field(s): overhead period sample ")),
1098         OPT_BOOLEAN(0, "show-cpu-utilization", &symbol_conf.show_cpu_utilization,
1099                     "Show sample percentage for different cpu modes"),
1100         OPT_BOOLEAN_FLAG(0, "showcpuutilization", &symbol_conf.show_cpu_utilization,
1101                     "Show sample percentage for different cpu modes", PARSE_OPT_HIDDEN),
1102         OPT_STRING('p', "parent", &parent_pattern, "regex",
1103                    "regex filter to identify parent, see: '--sort parent'"),
1104         OPT_BOOLEAN('x', "exclude-other", &symbol_conf.exclude_other,
1105                     "Only display entries with parent-match"),
1106         OPT_CALLBACK_DEFAULT('g', "call-graph", &callchain_param,
1107                              "print_type,threshold[,print_limit],order,sort_key[,branch],value",
1108                              report_callchain_help, &report_parse_callchain_opt,
1109                              callchain_default_opt),
1110         OPT_BOOLEAN(0, "children", &symbol_conf.cumulate_callchain,
1111                     "Accumulate callchains of children and show total overhead as well"),
1112         OPT_INTEGER(0, "max-stack", &report.max_stack,
1113                     "Set the maximum stack depth when parsing the callchain, "
1114                     "anything beyond the specified depth will be ignored. "
1115                     "Default: kernel.perf_event_max_stack or " __stringify(PERF_MAX_STACK_DEPTH)),
1116         OPT_BOOLEAN('G', "inverted", &report.inverted_callchain,
1117                     "alias for inverted call graph"),
1118         OPT_CALLBACK(0, "ignore-callees", NULL, "regex",
1119                    "ignore callees of these functions in call graphs",
1120                    report_parse_ignore_callees_opt),
1121         OPT_STRING('d', "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
1122                    "only consider symbols in these dsos"),
1123         OPT_STRING('c', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
1124                    "only consider symbols in these comms"),
1125         OPT_STRING(0, "pid", &symbol_conf.pid_list_str, "pid[,pid...]",
1126                    "only consider symbols in these pids"),
1127         OPT_STRING(0, "tid", &symbol_conf.tid_list_str, "tid[,tid...]",
1128                    "only consider symbols in these tids"),
1129         OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
1130                    "only consider these symbols"),
1131         OPT_STRING(0, "symbol-filter", &report.symbol_filter_str, "filter",
1132                    "only show symbols that (partially) match with this filter"),
1133         OPT_STRING('w', "column-widths", &symbol_conf.col_width_list_str,
1134                    "width[,width...]",
1135                    "don't try to adjust column width, use these fixed values"),
1136         OPT_STRING_NOEMPTY('t', "field-separator", &symbol_conf.field_sep, "separator",
1137                    "separator for columns, no spaces will be added between "
1138                    "columns '.' is reserved."),
1139         OPT_BOOLEAN('U', "hide-unresolved", &symbol_conf.hide_unresolved,
1140                     "Only display entries resolved to a symbol"),
1141         OPT_CALLBACK(0, "symfs", NULL, "directory",
1142                      "Look for files with symbols relative to this directory",
1143                      symbol__config_symfs),
1144         OPT_STRING('C', "cpu", &report.cpu_list, "cpu",
1145                    "list of cpus to profile"),
1146         OPT_BOOLEAN('I', "show-info", &report.show_full_info,
1147                     "Display extended information about perf.data file"),
1148         OPT_BOOLEAN(0, "source", &report.annotation_opts.annotate_src,
1149                     "Interleave source code with assembly code (default)"),
1150         OPT_BOOLEAN(0, "asm-raw", &report.annotation_opts.show_asm_raw,
1151                     "Display raw encoding of assembly instructions (default)"),
1152         OPT_STRING('M', "disassembler-style", &report.annotation_opts.disassembler_style, "disassembler style",
1153                    "Specify disassembler style (e.g. -M intel for intel syntax)"),
1154         OPT_BOOLEAN(0, "show-total-period", &symbol_conf.show_total_period,
1155                     "Show a column with the sum of periods"),
1156         OPT_BOOLEAN_SET(0, "group", &symbol_conf.event_group, &report.group_set,
1157                     "Show event group information together"),
1158         OPT_CALLBACK_NOOPT('b', "branch-stack", &branch_mode, "",
1159                     "use branch records for per branch histogram filling",
1160                     parse_branch_mode),
1161         OPT_BOOLEAN(0, "branch-history", &branch_call_mode,
1162                     "add last branch records to call history"),
1163         OPT_STRING(0, "objdump", &report.annotation_opts.objdump_path, "path",
1164                    "objdump binary to use for disassembly and annotations"),
1165         OPT_BOOLEAN(0, "demangle", &symbol_conf.demangle,
1166                     "Disable symbol demangling"),
1167         OPT_BOOLEAN(0, "demangle-kernel", &symbol_conf.demangle_kernel,
1168                     "Enable kernel symbol demangling"),
1169         OPT_BOOLEAN(0, "mem-mode", &report.mem_mode, "mem access profile"),
1170         OPT_INTEGER(0, "samples", &symbol_conf.res_sample,
1171                     "Number of samples to save per histogram entry for individual browsing"),
1172         OPT_CALLBACK(0, "percent-limit", &report, "percent",
1173                      "Don't show entries under that percent", parse_percent_limit),
1174         OPT_CALLBACK(0, "percentage", NULL, "relative|absolute",
1175                      "how to display percentage of filtered entries", parse_filter_percentage),
1176         OPT_CALLBACK_OPTARG(0, "itrace", &itrace_synth_opts, NULL, "opts",
1177                             "Instruction Tracing options\n" ITRACE_HELP,
1178                             itrace_parse_synth_opts),
1179         OPT_BOOLEAN(0, "full-source-path", &srcline_full_filename,
1180                         "Show full source file name path for source lines"),
1181         OPT_BOOLEAN(0, "show-ref-call-graph", &symbol_conf.show_ref_callgraph,
1182                     "Show callgraph from reference event"),
1183         OPT_INTEGER(0, "socket-filter", &report.socket_filter,
1184                     "only show processor socket that match with this filter"),
1185         OPT_BOOLEAN(0, "raw-trace", &symbol_conf.raw_trace,
1186                     "Show raw trace event output (do not use print fmt or plugins)"),
1187         OPT_BOOLEAN(0, "hierarchy", &symbol_conf.report_hierarchy,
1188                     "Show entries in a hierarchy"),
1189         OPT_CALLBACK_DEFAULT(0, "stdio-color", NULL, "mode",
1190                              "'always' (default), 'never' or 'auto' only applicable to --stdio mode",
1191                              stdio__config_color, "always"),
1192         OPT_STRING(0, "time", &report.time_str, "str",
1193                    "Time span of interest (start,stop)"),
1194         OPT_BOOLEAN(0, "inline", &symbol_conf.inline_name,
1195                     "Show inline function"),
1196         OPT_CALLBACK(0, "percent-type", &report.annotation_opts, "local-period",
1197                      "Set percent type local/global-period/hits",
1198                      annotate_parse_percent_type),
1199         OPT_BOOLEAN(0, "ns", &symbol_conf.nanosecs, "Show times in nanosecs"),
1200         OPT_CALLBACK(0, "time-quantum", &symbol_conf.time_quantum, "time (ms|us|ns|s)",
1201                      "Set time quantum for time sort key (default 100ms)",
1202                      parse_time_quantum),
1203         OPTS_EVSWITCH(&report.evswitch),
1204         OPT_END()
1205         };
1206         struct perf_data data = {
1207                 .mode  = PERF_DATA_MODE_READ,
1208         };
1209         int ret = hists__init();
1210         char sort_tmp[128];
1211
1212         if (ret < 0)
1213                 return ret;
1214
1215         ret = perf_config(report__config, &report);
1216         if (ret)
1217                 return ret;
1218
1219         argc = parse_options(argc, argv, options, report_usage, 0);
1220         if (argc) {
1221                 /*
1222                  * Special case: if there's an argument left then assume that
1223                  * it's a symbol filter:
1224                  */
1225                 if (argc > 1)
1226                         usage_with_options(report_usage, options);
1227
1228                 report.symbol_filter_str = argv[0];
1229         }
1230
1231         if (report.mmaps_mode)
1232                 report.tasks_mode = true;
1233
1234         if (quiet)
1235                 perf_quiet_option();
1236
1237         if (symbol_conf.vmlinux_name &&
1238             access(symbol_conf.vmlinux_name, R_OK)) {
1239                 pr_err("Invalid file: %s\n", symbol_conf.vmlinux_name);
1240                 return -EINVAL;
1241         }
1242         if (symbol_conf.kallsyms_name &&
1243             access(symbol_conf.kallsyms_name, R_OK)) {
1244                 pr_err("Invalid file: %s\n", symbol_conf.kallsyms_name);
1245                 return -EINVAL;
1246         }
1247
1248         if (report.inverted_callchain)
1249                 callchain_param.order = ORDER_CALLER;
1250         if (symbol_conf.cumulate_callchain && !callchain_param.order_set)
1251                 callchain_param.order = ORDER_CALLER;
1252
1253         if (itrace_synth_opts.callchain &&
1254             (int)itrace_synth_opts.callchain_sz > report.max_stack)
1255                 report.max_stack = itrace_synth_opts.callchain_sz;
1256
1257         if (!input_name || !strlen(input_name)) {
1258                 if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
1259                         input_name = "-";
1260                 else
1261                         input_name = "perf.data";
1262         }
1263
1264         data.path  = input_name;
1265         data.force = symbol_conf.force;
1266
1267 repeat:
1268         session = perf_session__new(&data, false, &report.tool);
1269         if (session == NULL)
1270                 return -1;
1271
1272         ret = evswitch__init(&report.evswitch, session->evlist, stderr);
1273         if (ret)
1274                 return ret;
1275
1276         if (zstd_init(&(session->zstd_data), 0) < 0)
1277                 pr_warning("Decompression initialization failed. Reported data may be incomplete.\n");
1278
1279         if (report.queue_size) {
1280                 ordered_events__set_alloc_size(&session->ordered_events,
1281                                                report.queue_size);
1282         }
1283
1284         session->itrace_synth_opts = &itrace_synth_opts;
1285
1286         report.session = session;
1287
1288         has_br_stack = perf_header__has_feat(&session->header,
1289                                              HEADER_BRANCH_STACK);
1290         if (perf_evlist__combined_sample_type(session->evlist) & PERF_SAMPLE_STACK_USER)
1291                 has_br_stack = false;
1292
1293         setup_forced_leader(&report, session->evlist);
1294
1295         if (itrace_synth_opts.last_branch)
1296                 has_br_stack = true;
1297
1298         if (has_br_stack && branch_call_mode)
1299                 symbol_conf.show_branchflag_count = true;
1300
1301         memset(&report.brtype_stat, 0, sizeof(struct branch_type_stat));
1302
1303         /*
1304          * Branch mode is a tristate:
1305          * -1 means default, so decide based on the file having branch data.
1306          * 0/1 means the user chose a mode.
1307          */
1308         if (((branch_mode == -1 && has_br_stack) || branch_mode == 1) &&
1309             !branch_call_mode) {
1310                 sort__mode = SORT_MODE__BRANCH;
1311                 symbol_conf.cumulate_callchain = false;
1312         }
1313         if (branch_call_mode) {
1314                 callchain_param.key = CCKEY_ADDRESS;
1315                 callchain_param.branch_callstack = 1;
1316                 symbol_conf.use_callchain = true;
1317                 callchain_register_param(&callchain_param);
1318                 if (sort_order == NULL)
1319                         sort_order = "srcline,symbol,dso";
1320         }
1321
1322         if (report.mem_mode) {
1323                 if (sort__mode == SORT_MODE__BRANCH) {
1324                         pr_err("branch and mem mode incompatible\n");
1325                         goto error;
1326                 }
1327                 sort__mode = SORT_MODE__MEMORY;
1328                 symbol_conf.cumulate_callchain = false;
1329         }
1330
1331         if (symbol_conf.report_hierarchy) {
1332                 /* disable incompatible options */
1333                 symbol_conf.cumulate_callchain = false;
1334
1335                 if (field_order) {
1336                         pr_err("Error: --hierarchy and --fields options cannot be used together\n");
1337                         parse_options_usage(report_usage, options, "F", 1);
1338                         parse_options_usage(NULL, options, "hierarchy", 0);
1339                         goto error;
1340                 }
1341
1342                 perf_hpp_list.need_collapse = true;
1343         }
1344
1345         if (report.use_stdio)
1346                 use_browser = 0;
1347         else if (report.use_tui)
1348                 use_browser = 1;
1349         else if (report.use_gtk)
1350                 use_browser = 2;
1351
1352         /* Force tty output for header output and per-thread stat. */
1353         if (report.header || report.header_only || report.show_threads)
1354                 use_browser = 0;
1355         if (report.header || report.header_only)
1356                 report.tool.show_feat_hdr = SHOW_FEAT_HEADER;
1357         if (report.show_full_info)
1358                 report.tool.show_feat_hdr = SHOW_FEAT_HEADER_FULL_INFO;
1359         if (report.stats_mode || report.tasks_mode)
1360                 use_browser = 0;
1361         if (report.stats_mode && report.tasks_mode) {
1362                 pr_err("Error: --tasks and --mmaps can't be used together with --stats\n");
1363                 goto error;
1364         }
1365
1366         if (strcmp(input_name, "-") != 0)
1367                 setup_browser(true);
1368         else
1369                 use_browser = 0;
1370
1371         if (sort_order && strstr(sort_order, "ipc")) {
1372                 parse_options_usage(report_usage, options, "s", 1);
1373                 goto error;
1374         }
1375
1376         if (sort_order && strstr(sort_order, "symbol")) {
1377                 if (sort__mode == SORT_MODE__BRANCH) {
1378                         snprintf(sort_tmp, sizeof(sort_tmp), "%s,%s",
1379                                  sort_order, "ipc_lbr");
1380                         report.symbol_ipc = true;
1381                 } else {
1382                         snprintf(sort_tmp, sizeof(sort_tmp), "%s,%s",
1383                                  sort_order, "ipc_null");
1384                 }
1385
1386                 sort_order = sort_tmp;
1387         }
1388
1389         if (setup_sorting(session->evlist) < 0) {
1390                 if (sort_order)
1391                         parse_options_usage(report_usage, options, "s", 1);
1392                 if (field_order)
1393                         parse_options_usage(sort_order ? NULL : report_usage,
1394                                             options, "F", 1);
1395                 goto error;
1396         }
1397
1398         if ((report.header || report.header_only) && !quiet) {
1399                 perf_session__fprintf_info(session, stdout,
1400                                            report.show_full_info);
1401                 if (report.header_only) {
1402                         ret = 0;
1403                         goto error;
1404                 }
1405         } else if (use_browser == 0 && !quiet &&
1406                    !report.stats_mode && !report.tasks_mode) {
1407                 fputs("# To display the perf.data header info, please use --header/--header-only options.\n#\n",
1408                       stdout);
1409         }
1410
1411         /*
1412          * Only in the TUI browser we are doing integrated annotation,
1413          * so don't allocate extra space that won't be used in the stdio
1414          * implementation.
1415          */
1416         if (ui__has_annotation() || report.symbol_ipc) {
1417                 ret = symbol__annotation_init();
1418                 if (ret < 0)
1419                         goto error;
1420                 /*
1421                  * For searching by name on the "Browse map details".
1422                  * providing it only in verbose mode not to bloat too
1423                  * much struct symbol.
1424                  */
1425                 if (verbose > 0) {
1426                         /*
1427                          * XXX: Need to provide a less kludgy way to ask for
1428                          * more space per symbol, the u32 is for the index on
1429                          * the ui browser.
1430                          * See symbol__browser_index.
1431                          */
1432                         symbol_conf.priv_size += sizeof(u32);
1433                         symbol_conf.sort_by_name = true;
1434                 }
1435                 annotation_config__init();
1436         }
1437
1438         if (symbol__init(&session->header.env) < 0)
1439                 goto error;
1440
1441         if (report.time_str) {
1442                 ret = perf_time__parse_for_ranges(report.time_str, session,
1443                                                   &report.ptime_range,
1444                                                   &report.range_size,
1445                                                   &report.range_num);
1446                 if (ret < 0)
1447                         goto error;
1448
1449                 itrace_synth_opts__set_time_range(&itrace_synth_opts,
1450                                                   report.ptime_range,
1451                                                   report.range_num);
1452         }
1453
1454         if (session->tevent.pevent &&
1455             tep_set_function_resolver(session->tevent.pevent,
1456                                       machine__resolve_kernel_addr,
1457                                       &session->machines.host) < 0) {
1458                 pr_err("%s: failed to set libtraceevent function resolver\n",
1459                        __func__);
1460                 return -1;
1461         }
1462
1463         sort__setup_elide(stdout);
1464
1465         ret = __cmd_report(&report);
1466         if (ret == K_SWITCH_INPUT_DATA) {
1467                 perf_session__delete(session);
1468                 goto repeat;
1469         } else
1470                 ret = 0;
1471
1472 error:
1473         if (report.ptime_range) {
1474                 itrace_synth_opts__clear_time_range(&itrace_synth_opts);
1475                 zfree(&report.ptime_range);
1476         }
1477         zstd_fini(&(session->zstd_data));
1478         perf_session__delete(session);
1479         return ret;
1480 }