tools/perf/builtin-report.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * builtin-report.c
   4  *
   5  * Builtin report command: Analyze the perf.data input file,
   6  * look up and read DSOs and symbol information and display
   7  * a histogram of results, along various sorting keys.
   8  */
   9 #include "builtin.h"
  10
  11 #include "util/util.h"
  12 #include "util/config.h"
  13
  14 #include "util/annotate.h"
  15 #include "util/color.h"
  16 #include <linux/list.h>
  17 #include <linux/rbtree.h>
  18 #include <linux/err.h>
  19 #include "util/map.h"
  20 #include "util/symbol.h"
  21 #include "util/callchain.h"
  22 #include "util/values.h"
  23
  24 #include "perf.h"
  25 #include "util/debug.h"
  26 #include "util/evlist.h"
  27 #include "util/evsel.h"
  28 #include "util/header.h"
  29 #include "util/session.h"
  30 #include "util/tool.h"
  31
  32 #include <subcmd/parse-options.h>
  33 #include <subcmd/exec-cmd.h>
  34 #include "util/parse-events.h"
  35
  36 #include "util/thread.h"
  37 #include "util/sort.h"
  38 #include "util/hist.h"
  39 #include "util/data.h"
  40 #include "arch/common.h"
  41 #include "util/time-utils.h"
  42 #include "util/auxtrace.h"
  43 #include "util/units.h"
  44 #include "util/branch.h"
  45
  46 #include <dlfcn.h>
  47 #include <errno.h>
  48 #include <inttypes.h>
  49 #include <regex.h>
  50 #include "sane_ctype.h"
  51 #include <signal.h>
  52 #include <linux/bitmap.h>
  53 #include <linux/stringify.h>
  54 #include <linux/time64.h>
  55 #include <sys/types.h>
  56 #include <sys/stat.h>
  57 #include <unistd.h>
  58 #include <linux/mman.h>
  59
  60 struct report {
  61         struct perf_tool        tool;
  62         struct perf_session     *session;
  63         bool                    use_tui, use_gtk, use_stdio;
  64         bool                    show_full_info;
  65         bool                    show_threads;
  66         bool                    inverted_callchain;
  67         bool                    mem_mode;
  68         bool                    stats_mode;
  69         bool                    tasks_mode;
  70         bool                    mmaps_mode;
  71         bool                    header;
  72         bool                    header_only;
  73         bool                    nonany_branch_mode;
  74         bool                    group_set;
  75         int                     max_stack;
  76         struct perf_read_values show_threads_values;
  77         struct annotation_options annotation_opts;
  78         const char              *pretty_printing_style;
  79         const char              *cpu_list;
  80         const char              *symbol_filter_str;
  81         const char              *time_str;
  82         struct perf_time_interval *ptime_range;
  83         int                     range_size;
  84         int                     range_num;
  85         float                   min_percent;
  86         u64                     nr_entries;
  87         u64                     queue_size;
  88         int                     socket_filter;
  89         DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
  90         struct branch_type_stat brtype_stat;
  91         bool                    symbol_ipc;
  92 };
  93
  94 static int report__config(const char *var, const char *value, void *cb)
  95 {
  96         struct report *rep = cb;
  97
  98         if (!strcmp(var, "report.group")) {
  99                 symbol_conf.event_group = perf_config_bool(var, value);
 100                 return 0;
 101         }
 102         if (!strcmp(var, "report.percent-limit")) {
 103                 double pcnt = strtof(value, NULL);
 104
 105                 rep->min_percent = pcnt;
 106                 callchain_param.min_percent = pcnt;
 107                 return 0;
 108         }
 109         if (!strcmp(var, "report.children")) {
 110                 symbol_conf.cumulate_callchain = perf_config_bool(var, value);
 111                 return 0;
 112         }
 113         if (!strcmp(var, "report.queue-size"))
 114                 return perf_config_u64(&rep->queue_size, var, value);
 115
 116         if (!strcmp(var, "report.sort_order")) {
 117                 default_sort_order = strdup(value);
 118                 return 0;
 119         }
 120
 121         return 0;
 122 }
 123
 124 static int hist_iter__report_callback(struct hist_entry_iter *iter,
 125                                       struct addr_location *al, bool single,
 126                                       void *arg)
 127 {
 128         int err = 0;
 129         struct report *rep = arg;
 130         struct hist_entry *he = iter->he;
 131         struct perf_evsel *evsel = iter->evsel;
 132         struct perf_sample *sample = iter->sample;
 133         struct mem_info *mi;
 134         struct branch_info *bi;
 135
 136         if (!ui__has_annotation() && !rep->symbol_ipc)
 137                 return 0;
 138
 139         if (sort__mode == SORT_MODE__BRANCH) {
 140                 bi = he->branch_info;
 141                 err = addr_map_symbol__inc_samples(&bi->from, sample, evsel);
 142                 if (err)
 143                         goto out;
 144
 145                 err = addr_map_symbol__inc_samples(&bi->to, sample, evsel);
 146
 147         } else if (rep->mem_mode) {
 148                 mi = he->mem_info;
 149                 err = addr_map_symbol__inc_samples(&mi->daddr, sample, evsel);
 150                 if (err)
 151                         goto out;
 152
 153                 err = hist_entry__inc_addr_samples(he, sample, evsel, al->addr);
 154
 155         } else if (symbol_conf.cumulate_callchain) {
 156                 if (single)
 157                         err = hist_entry__inc_addr_samples(he, sample, evsel, al->addr);
 158         } else {
 159                 err = hist_entry__inc_addr_samples(he, sample, evsel, al->addr);
 160         }
 161
 162 out:
 163         return err;
 164 }
 165
 166 static int hist_iter__branch_callback(struct hist_entry_iter *iter,
 167                                       struct addr_location *al __maybe_unused,
 168                                       bool single __maybe_unused,
 169                                       void *arg)
 170 {
 171         struct hist_entry *he = iter->he;
 172         struct report *rep = arg;
 173         struct branch_info *bi;
 174         struct perf_sample *sample = iter->sample;
 175         struct perf_evsel *evsel = iter->evsel;
 176         int err;
 177
 178         if (!ui__has_annotation() && !rep->symbol_ipc)
 179                 return 0;
 180
 181         bi = he->branch_info;
 182         err = addr_map_symbol__inc_samples(&bi->from, sample, evsel);
 183         if (err)
 184                 goto out;
 185
 186         err = addr_map_symbol__inc_samples(&bi->to, sample, evsel);
 187
 188         branch_type_count(&rep->brtype_stat, &bi->flags,
 189                           bi->from.addr, bi->to.addr);
 190
 191 out:
 192         return err;
 193 }
 194
 195 static void setup_forced_leader(struct report *report,
 196                                 struct perf_evlist *evlist)
 197 {
 198         if (report->group_set)
 199                 perf_evlist__force_leader(evlist);
 200 }
 201
 202 static int process_feature_event(struct perf_session *session,
 203                                  union perf_event *event)
 204 {
 205         struct report *rep = container_of(session->tool, struct report, tool);
 206
 207         if (event->feat.feat_id < HEADER_LAST_FEATURE)
 208                 return perf_event__process_feature(session, event);
 209
 210         if (event->feat.feat_id != HEADER_LAST_FEATURE) {
 211                 pr_err("failed: wrong feature ID: %" PRIu64 "\n",
 212                        event->feat.feat_id);
 213                 return -1;
 214         }
 215
 216         /*
 217          * (feat_id = HEADER_LAST_FEATURE) is the end marker which
 218          * means all features are received, now we can force the
 219          * group if needed.
 220          */
 221         setup_forced_leader(rep, session->evlist);
 222         return 0;
 223 }
 224
 225 static int process_sample_event(struct perf_tool *tool,
 226                                 union perf_event *event,
 227                                 struct perf_sample *sample,
 228                                 struct perf_evsel *evsel,
 229                                 struct machine *machine)
 230 {
 231         struct report *rep = container_of(tool, struct report, tool);
 232         struct addr_location al;
 233         struct hist_entry_iter iter = {
 234                 .evsel                  = evsel,
 235                 .sample                 = sample,
 236                 .hide_unresolved        = symbol_conf.hide_unresolved,
 237                 .add_entry_cb           = hist_iter__report_callback,
 238         };
 239         int ret = 0;
 240
 241         if (perf_time__ranges_skip_sample(rep->ptime_range, rep->range_num,
 242                                           sample->time)) {
 243                 return 0;
 244         }
 245
 246         if (machine__resolve(machine, &al, sample) < 0) {
 247                 pr_debug("problem processing %d event, skipping it.\n",
 248                          event->header.type);
 249                 return -1;
 250         }
 251
 252         if (symbol_conf.hide_unresolved && al.sym == NULL)
 253                 goto out_put;
 254
 255         if (rep->cpu_list && !test_bit(sample->cpu, rep->cpu_bitmap))
 256                 goto out_put;
 257
 258         if (sort__mode == SORT_MODE__BRANCH) {
 259                 /*
 260                  * A non-synthesized event might not have a branch stack if
 261                  * branch stacks have been synthesized (using itrace options).
 262                  */
 263                 if (!sample->branch_stack)
 264                         goto out_put;
 265
 266                 iter.add_entry_cb = hist_iter__branch_callback;
 267                 iter.ops = &hist_iter_branch;
 268         } else if (rep->mem_mode) {
 269                 iter.ops = &hist_iter_mem;
 270         } else if (symbol_conf.cumulate_callchain) {
 271                 iter.ops = &hist_iter_cumulative;
 272         } else {
 273                 iter.ops = &hist_iter_normal;
 274         }
 275
 276         if (al.map != NULL)
 277                 al.map->dso->hit = 1;
 278
 279         if (ui__has_annotation() || rep->symbol_ipc) {
 280                 hist__account_cycles(sample->branch_stack, &al, sample,
 281                                      rep->nonany_branch_mode);
 282         }
 283
 284         ret = hist_entry_iter__add(&iter, &al, rep->max_stack, rep);
 285         if (ret < 0)
 286                 pr_debug("problem adding hist entry, skipping event\n");
 287 out_put:
 288         addr_location__put(&al);
 289         return ret;
 290 }
 291
 292 static int process_read_event(struct perf_tool *tool,
 293                               union perf_event *event,
 294                               struct perf_sample *sample __maybe_unused,
 295                               struct perf_evsel *evsel,
 296                               struct machine *machine __maybe_unused)
 297 {
 298         struct report *rep = container_of(tool, struct report, tool);
 299
 300         if (rep->show_threads) {
 301                 const char *name = evsel ? perf_evsel__name(evsel) : "unknown";
 302                 int err = perf_read_values_add_value(&rep->show_threads_values,
 303                                            event->read.pid, event->read.tid,
 304                                            evsel->idx,
 305                                            name,
 306                                            event->read.value);
 307
 308                 if (err)
 309                         return err;
 310         }
 311
 312         return 0;
 313 }
 314
 315 /* For pipe mode, sample_type is not currently set */
 316 static int report__setup_sample_type(struct report *rep)
 317 {
 318         struct perf_session *session = rep->session;
 319         u64 sample_type = perf_evlist__combined_sample_type(session->evlist);
 320         bool is_pipe = perf_data__is_pipe(session->data);
 321
 322         if (session->itrace_synth_opts->callchain ||
 323             (!is_pipe &&
 324              perf_header__has_feat(&session->header, HEADER_AUXTRACE) &&
 325              !session->itrace_synth_opts->set))
 326                 sample_type |= PERF_SAMPLE_CALLCHAIN;
 327
 328         if (session->itrace_synth_opts->last_branch)
 329                 sample_type |= PERF_SAMPLE_BRANCH_STACK;
 330
 331         if (!is_pipe && !(sample_type & PERF_SAMPLE_CALLCHAIN)) {
 332                 if (perf_hpp_list.parent) {
 333                         ui__error("Selected --sort parent, but no "
 334                                     "callchain data. Did you call "
 335                                     "'perf record' without -g?\n");
 336                         return -EINVAL;
 337                 }
 338                 if (symbol_conf.use_callchain &&
 339                         !symbol_conf.show_branchflag_count) {
 340                         ui__error("Selected -g or --branch-history.\n"
 341                                   "But no callchain or branch data.\n"
 342                                   "Did you call 'perf record' without -g or -b?\n");
 343                         return -1;
 344                 }
 345         } else if (!callchain_param.enabled &&
 346                    callchain_param.mode != CHAIN_NONE &&
 347                    !symbol_conf.use_callchain) {
 348                         symbol_conf.use_callchain = true;
 349                         if (callchain_register_param(&callchain_param) < 0) {
 350                                 ui__error("Can't register callchain params.\n");
 351                                 return -EINVAL;
 352                         }
 353         }
 354
 355         if (symbol_conf.cumulate_callchain) {
 356                 /* Silently ignore if callchain is missing */
 357                 if (!(sample_type & PERF_SAMPLE_CALLCHAIN)) {
 358                         symbol_conf.cumulate_callchain = false;
 359                         perf_hpp__cancel_cumulate();
 360                 }
 361         }
 362
 363         if (sort__mode == SORT_MODE__BRANCH) {
 364                 if (!is_pipe &&
 365                     !(sample_type & PERF_SAMPLE_BRANCH_STACK)) {
 366                         ui__error("Selected -b but no branch data. "
 367                                   "Did you call perf record without -b?\n");
 368                         return -1;
 369                 }
 370         }
 371
 372         if (symbol_conf.use_callchain || symbol_conf.cumulate_callchain) {
 373                 if ((sample_type & PERF_SAMPLE_REGS_USER) &&
 374                     (sample_type & PERF_SAMPLE_STACK_USER)) {
 375                         callchain_param.record_mode = CALLCHAIN_DWARF;
 376                         dwarf_callchain_users = true;
 377                 } else if (sample_type & PERF_SAMPLE_BRANCH_STACK)
 378                         callchain_param.record_mode = CALLCHAIN_LBR;
 379                 else
 380                         callchain_param.record_mode = CALLCHAIN_FP;
 381         }
 382
 383         /* ??? handle more cases than just ANY? */
 384         if (!(perf_evlist__combined_branch_type(session->evlist) &
 385                                 PERF_SAMPLE_BRANCH_ANY))
 386                 rep->nonany_branch_mode = true;
 387
 388         return 0;
 389 }
 390
 391 static void sig_handler(int sig __maybe_unused)
 392 {
 393         session_done = 1;
 394 }
 395
 396 static size_t hists__fprintf_nr_sample_events(struct hists *hists, struct report *rep,
 397                                               const char *evname, FILE *fp)
 398 {
 399         size_t ret;
 400         char unit;
 401         unsigned long nr_samples = hists->stats.nr_events[PERF_RECORD_SAMPLE];
 402         u64 nr_events = hists->stats.total_period;
 403         struct perf_evsel *evsel = hists_to_evsel(hists);
 404         char buf[512];
 405         size_t size = sizeof(buf);
 406         int socked_id = hists->socket_filter;
 407
 408         if (quiet)
 409                 return 0;
 410
 411         if (symbol_conf.filter_relative) {
 412                 nr_samples = hists->stats.nr_non_filtered_samples;
 413                 nr_events = hists->stats.total_non_filtered_period;
 414         }
 415
 416         if (perf_evsel__is_group_event(evsel)) {
 417                 struct perf_evsel *pos;
 418
 419                 perf_evsel__group_desc(evsel, buf, size);
 420                 evname = buf;
 421
 422                 for_each_group_member(pos, evsel) {
 423                         const struct hists *pos_hists = evsel__hists(pos);
 424
 425                         if (symbol_conf.filter_relative) {
 426                                 nr_samples += pos_hists->stats.nr_non_filtered_samples;
 427                                 nr_events += pos_hists->stats.total_non_filtered_period;
 428                         } else {
 429                                 nr_samples += pos_hists->stats.nr_events[PERF_RECORD_SAMPLE];
 430                                 nr_events += pos_hists->stats.total_period;
 431                         }
 432                 }
 433         }
 434
 435         nr_samples = convert_unit(nr_samples, &unit);
 436         ret = fprintf(fp, "# Samples: %lu%c", nr_samples, unit);
 437         if (evname != NULL) {
 438                 ret += fprintf(fp, " of event%s '%s'",
 439                                evsel->nr_members > 1 ? "s" : "", evname);
 440         }
 441
 442         if (rep->time_str)
 443                 ret += fprintf(fp, " (time slices: %s)", rep->time_str);
 444
 445         if (symbol_conf.show_ref_callgraph &&
 446             strstr(evname, "call-graph=no")) {
 447                 ret += fprintf(fp, ", show reference callgraph");
 448         }
 449
 450         if (rep->mem_mode) {
 451                 ret += fprintf(fp, "\n# Total weight : %" PRIu64, nr_events);
 452                 ret += fprintf(fp, "\n# Sort order   : %s", sort_order ? : default_mem_sort_order);
 453         } else
 454                 ret += fprintf(fp, "\n# Event count (approx.): %" PRIu64, nr_events);
 455
 456         if (socked_id > -1)
 457                 ret += fprintf(fp, "\n# Processor Socket: %d", socked_id);
 458
 459         return ret + fprintf(fp, "\n#\n");
 460 }
 461
 462 static int perf_evlist__tty_browse_hists(struct perf_evlist *evlist,
 463                                          struct report *rep,
 464                                          const char *help)
 465 {
 466         struct perf_evsel *pos;
 467
 468         if (!quiet) {
 469                 fprintf(stdout, "#\n# Total Lost Samples: %" PRIu64 "\n#\n",
 470                         evlist->stats.total_lost_samples);
 471         }
 472
 473         evlist__for_each_entry(evlist, pos) {
 474                 struct hists *hists = evsel__hists(pos);
 475                 const char *evname = perf_evsel__name(pos);
 476
 477                 if (symbol_conf.event_group &&
 478                     !perf_evsel__is_group_leader(pos))
 479                         continue;
 480
 481                 hists__fprintf_nr_sample_events(hists, rep, evname, stdout);
 482                 hists__fprintf(hists, !quiet, 0, 0, rep->min_percent, stdout,
 483                                !(symbol_conf.use_callchain ||
 484                                  symbol_conf.show_branchflag_count));
 485                 fprintf(stdout, "\n\n");
 486         }
 487
 488         if (!quiet)
 489                 fprintf(stdout, "#\n# (%s)\n#\n", help);
 490
 491         if (rep->show_threads) {
 492                 bool style = !strcmp(rep->pretty_printing_style, "raw");
 493                 perf_read_values_display(stdout, &rep->show_threads_values,
 494                                          style);
 495                 perf_read_values_destroy(&rep->show_threads_values);
 496         }
 497
 498         if (sort__mode == SORT_MODE__BRANCH)
 499                 branch_type_stat_display(stdout, &rep->brtype_stat);
 500
 501         return 0;
 502 }
 503
 504 static void report__warn_kptr_restrict(const struct report *rep)
 505 {
 506         struct map *kernel_map = machine__kernel_map(&rep->session->machines.host);
 507         struct kmap *kernel_kmap = kernel_map ? map__kmap(kernel_map) : NULL;
 508
 509         if (perf_evlist__exclude_kernel(rep->session->evlist))
 510                 return;
 511
 512         if (kernel_map == NULL ||
 513             (kernel_map->dso->hit &&
 514              (kernel_kmap->ref_reloc_sym == NULL ||
 515               kernel_kmap->ref_reloc_sym->addr == 0))) {
 516                 const char *desc =
 517                     "As no suitable kallsyms nor vmlinux was found, kernel samples\n"
 518                     "can't be resolved.";
 519
 520                 if (kernel_map && map__has_symbols(kernel_map)) {
 521                         desc = "If some relocation was applied (e.g. "
 522                                "kexec) symbols may be misresolved.";
 523                 }
 524
 525                 ui__warning(
 526 "Kernel address maps (/proc/{kallsyms,modules}) were restricted.\n\n"
 527 "Check /proc/sys/kernel/kptr_restrict before running 'perf record'.\n\n%s\n\n"
 528 "Samples in kernel modules can't be resolved as well.\n\n",
 529                 desc);
 530         }
 531 }
 532
 533 static int report__gtk_browse_hists(struct report *rep, const char *help)
 534 {
 535         int (*hist_browser)(struct perf_evlist *evlist, const char *help,
 536                             struct hist_browser_timer *timer, float min_pcnt);
 537
 538         hist_browser = dlsym(perf_gtk_handle, "perf_evlist__gtk_browse_hists");
 539
 540         if (hist_browser == NULL) {
 541                 ui__error("GTK browser not found!\n");
 542                 return -1;
 543         }
 544
 545         return hist_browser(rep->session->evlist, help, NULL, rep->min_percent);
 546 }
 547
 548 static int report__browse_hists(struct report *rep)
 549 {
 550         int ret;
 551         struct perf_session *session = rep->session;
 552         struct perf_evlist *evlist = session->evlist;
 553         const char *help = perf_tip(system_path(TIPDIR));
 554
 555         if (help == NULL) {
 556                 /* fallback for people who don't install perf ;-) */
 557                 help = perf_tip(DOCDIR);
 558                 if (help == NULL)
 559                         help = "Cannot load tips.txt file, please install perf!";
 560         }
 561
 562         switch (use_browser) {
 563         case 1:
 564                 ret = perf_evlist__tui_browse_hists(evlist, help, NULL,
 565                                                     rep->min_percent,
 566                                                     &session->header.env,
 567                                                     true, &rep->annotation_opts);
 568                 /*
 569                  * Usually "ret" is the last pressed key, and we only
 570                  * care if the key notifies us to switch data file.
 571                  */
 572                 if (ret != K_SWITCH_INPUT_DATA)
 573                         ret = 0;
 574                 break;
 575         case 2:
 576                 ret = report__gtk_browse_hists(rep, help);
 577                 break;
 578         default:
 579                 ret = perf_evlist__tty_browse_hists(evlist, rep, help);
 580                 break;
 581         }
 582
 583         return ret;
 584 }
 585
 586 static int report__collapse_hists(struct report *rep)
 587 {
 588         struct ui_progress prog;
 589         struct perf_evsel *pos;
 590         int ret = 0;
 591
 592         ui_progress__init(&prog, rep->nr_entries, "Merging related events...");
 593
 594         evlist__for_each_entry(rep->session->evlist, pos) {
 595                 struct hists *hists = evsel__hists(pos);
 596
 597                 if (pos->idx == 0)
 598                         hists->symbol_filter_str = rep->symbol_filter_str;
 599
 600                 hists->socket_filter = rep->socket_filter;
 601
 602                 ret = hists__collapse_resort(hists, &prog);
 603                 if (ret < 0)
 604                         break;
 605
 606                 /* Non-group events are considered as leader */
 607                 if (symbol_conf.event_group &&
 608                     !perf_evsel__is_group_leader(pos)) {
 609                         struct hists *leader_hists = evsel__hists(pos->leader);
 610
 611                         hists__match(leader_hists, hists);
 612                         hists__link(leader_hists, hists);
 613                 }
 614         }
 615
 616         ui_progress__finish();
 617         return ret;
 618 }
 619
 620 static int hists__resort_cb(struct hist_entry *he, void *arg)
 621 {
 622         struct report *rep = arg;
 623         struct symbol *sym = he->ms.sym;
 624
 625         if (rep->symbol_ipc && sym && !sym->annotate2) {
 626                 struct perf_evsel *evsel = hists_to_evsel(he->hists);
 627
 628                 symbol__annotate2(sym, he->ms.map, evsel,
 629                                   &annotation__default_options, NULL);
 630         }
 631
 632         return 0;
 633 }
 634
 635 static void report__output_resort(struct report *rep)
 636 {
 637         struct ui_progress prog;
 638         struct perf_evsel *pos;
 639
 640         ui_progress__init(&prog, rep->nr_entries, "Sorting events for output...");
 641
 642         evlist__for_each_entry(rep->session->evlist, pos) {
 643                 perf_evsel__output_resort_cb(pos, &prog,
 644                                              hists__resort_cb, rep);
 645         }
 646
 647         ui_progress__finish();
 648 }
 649
 650 static void stats_setup(struct report *rep)
 651 {
 652         memset(&rep->tool, 0, sizeof(rep->tool));
 653         rep->tool.no_warn = true;
 654 }
 655
 656 static int stats_print(struct report *rep)
 657 {
 658         struct perf_session *session = rep->session;
 659
 660         perf_session__fprintf_nr_events(session, stdout);
 661         return 0;
 662 }
 663
 664 static void tasks_setup(struct report *rep)
 665 {
 666         memset(&rep->tool, 0, sizeof(rep->tool));
 667         rep->tool.ordered_events = true;
 668         if (rep->mmaps_mode) {
 669                 rep->tool.mmap = perf_event__process_mmap;
 670                 rep->tool.mmap2 = perf_event__process_mmap2;
 671         }
 672         rep->tool.comm = perf_event__process_comm;
 673         rep->tool.exit = perf_event__process_exit;
 674         rep->tool.fork = perf_event__process_fork;
 675         rep->tool.no_warn = true;
 676 }
 677
 678 struct task {
 679         struct thread           *thread;
 680         struct list_head         list;
 681         struct list_head         children;
 682 };
 683
 684 static struct task *tasks_list(struct task *task, struct machine *machine)
 685 {
 686         struct thread *parent_thread, *thread = task->thread;
 687         struct task   *parent_task;
 688
 689         /* Already listed. */
 690         if (!list_empty(&task->list))
 691                 return NULL;
 692
 693         /* Last one in the chain. */
 694         if (thread->ppid == -1)
 695                 return task;
 696
 697         parent_thread = machine__find_thread(machine, -1, thread->ppid);
 698         if (!parent_thread)
 699                 return ERR_PTR(-ENOENT);
 700
 701         parent_task = thread__priv(parent_thread);
 702         list_add_tail(&task->list, &parent_task->children);
 703         return tasks_list(parent_task, machine);
 704 }
 705
 706 static size_t maps__fprintf_task(struct maps *maps, int indent, FILE *fp)
 707 {
 708         size_t printed = 0;
 709         struct rb_node *nd;
 710
 711         for (nd = rb_first(&maps->entries); nd; nd = rb_next(nd)) {
 712                 struct map *map = rb_entry(nd, struct map, rb_node);
 713
 714                 printed += fprintf(fp, "%*s  %" PRIx64 "-%" PRIx64 " %c%c%c%c %08" PRIx64 " %" PRIu64 " %s\n",
 715                                    indent, "", map->start, map->end,
 716                                    map->prot & PROT_READ ? 'r' : '-',
 717                                    map->prot & PROT_WRITE ? 'w' : '-',
 718                                    map->prot & PROT_EXEC ? 'x' : '-',
 719                                    map->flags & MAP_SHARED ? 's' : 'p',
 720                                    map->pgoff,
 721                                    map->ino, map->dso->name);
 722         }
 723
 724         return printed;
 725 }
 726
 727 static int map_groups__fprintf_task(struct map_groups *mg, int indent, FILE *fp)
 728 {
 729         return maps__fprintf_task(&mg->maps, indent, fp);
 730 }
 731
 732 static void task__print_level(struct task *task, FILE *fp, int level)
 733 {
 734         struct thread *thread = task->thread;
 735         struct task *child;
 736         int comm_indent = fprintf(fp, "  %8d %8d %8d |%*s",
 737                                   thread->pid_, thread->tid, thread->ppid,
 738                                   level, "");
 739
 740         fprintf(fp, "%s\n", thread__comm_str(thread));
 741
 742         map_groups__fprintf_task(thread->mg, comm_indent, fp);
 743
 744         if (!list_empty(&task->children)) {
 745                 list_for_each_entry(child, &task->children, list)
 746                         task__print_level(child, fp, level + 1);
 747         }
 748 }
 749
 750 static int tasks_print(struct report *rep, FILE *fp)
 751 {
 752         struct perf_session *session = rep->session;
 753         struct machine      *machine = &session->machines.host;
 754         struct task *tasks, *task;
 755         unsigned int nr = 0, itask = 0, i;
 756         struct rb_node *nd;
 757         LIST_HEAD(list);
 758
 759         /*
 760          * No locking needed while accessing machine->threads,
 761          * because --tasks is single threaded command.
 762          */
 763
 764         /* Count all the threads. */
 765         for (i = 0; i < THREADS__TABLE_SIZE; i++)
 766                 nr += machine->threads[i].nr;
 767
 768         tasks = malloc(sizeof(*tasks) * nr);
 769         if (!tasks)
 770                 return -ENOMEM;
 771
 772         for (i = 0; i < THREADS__TABLE_SIZE; i++) {
 773                 struct threads *threads = &machine->threads[i];
 774
 775                 for (nd = rb_first_cached(&threads->entries); nd;
 776                      nd = rb_next(nd)) {
 777                         task = tasks + itask++;
 778
 779                         task->thread = rb_entry(nd, struct thread, rb_node);
 780                         INIT_LIST_HEAD(&task->children);
 781                         INIT_LIST_HEAD(&task->list);
 782                         thread__set_priv(task->thread, task);
 783                 }
 784         }
 785
 786         /*
 787          * Iterate every task down to the unprocessed parent
 788          * and link all in task children list. Task with no
 789          * parent is added into 'list'.
 790          */
 791         for (itask = 0; itask < nr; itask++) {
 792                 task = tasks + itask;
 793
 794                 if (!list_empty(&task->list))
 795                         continue;
 796
 797                 task = tasks_list(task, machine);
 798                 if (IS_ERR(task)) {
 799                         pr_err("Error: failed to process tasks\n");
 800                         free(tasks);
 801                         return PTR_ERR(task);
 802                 }
 803
 804                 if (task)
 805                         list_add_tail(&task->list, &list);
 806         }
 807
 808         fprintf(fp, "# %8s %8s %8s  %s\n", "pid", "tid", "ppid", "comm");
 809
 810         list_for_each_entry(task, &list, list)
 811                 task__print_level(task, fp, 0);
 812
 813         free(tasks);
 814         return 0;
 815 }
 816
 817 static int __cmd_report(struct report *rep)
 818 {
 819         int ret;
 820         struct perf_session *session = rep->session;
 821         struct perf_evsel *pos;
 822         struct perf_data *data = session->data;
 823
 824         signal(SIGINT, sig_handler);
 825
 826         if (rep->cpu_list) {
 827                 ret = perf_session__cpu_bitmap(session, rep->cpu_list,
 828                                                rep->cpu_bitmap);
 829                 if (ret) {
 830                         ui__error("failed to set cpu bitmap\n");
 831                         return ret;
 832                 }
 833                 session->itrace_synth_opts->cpu_bitmap = rep->cpu_bitmap;
 834         }
 835
 836         if (rep->show_threads) {
 837                 ret = perf_read_values_init(&rep->show_threads_values);
 838                 if (ret)
 839                         return ret;
 840         }
 841
 842         ret = report__setup_sample_type(rep);
 843         if (ret) {
 844                 /* report__setup_sample_type() already showed error message */
 845                 return ret;
 846         }
 847
 848         if (rep->stats_mode)
 849                 stats_setup(rep);
 850
 851         if (rep->tasks_mode)
 852                 tasks_setup(rep);
 853
 854         ret = perf_session__process_events(session);
 855         if (ret) {
 856                 ui__error("failed to process sample\n");
 857                 return ret;
 858         }
 859
 860         if (rep->stats_mode)
 861                 return stats_print(rep);
 862
 863         if (rep->tasks_mode)
 864                 return tasks_print(rep, stdout);
 865
 866         report__warn_kptr_restrict(rep);
 867
 868         evlist__for_each_entry(session->evlist, pos)
 869                 rep->nr_entries += evsel__hists(pos)->nr_entries;
 870
 871         if (use_browser == 0) {
 872                 if (verbose > 3)
 873                         perf_session__fprintf(session, stdout);
 874
 875                 if (verbose > 2)
 876                         perf_session__fprintf_dsos(session, stdout);
 877
 878                 if (dump_trace) {
 879                         perf_session__fprintf_nr_events(session, stdout);
 880                         perf_evlist__fprintf_nr_events(session->evlist, stdout);
 881                         return 0;
 882                 }
 883         }
 884
 885         ret = report__collapse_hists(rep);
 886         if (ret) {
 887                 ui__error("failed to process hist entry\n");
 888                 return ret;
 889         }
 890
 891         if (session_done())
 892                 return 0;
 893
 894         /*
 895          * recalculate number of entries after collapsing since it
 896          * might be changed during the collapse phase.
 897          */
 898         rep->nr_entries = 0;
 899         evlist__for_each_entry(session->evlist, pos)
 900                 rep->nr_entries += evsel__hists(pos)->nr_entries;
 901
 902         if (rep->nr_entries == 0) {
 903                 ui__error("The %s data has no samples!\n", data->path);
 904                 return 0;
 905         }
 906
 907         report__output_resort(rep);
 908
 909         return report__browse_hists(rep);
 910 }
 911
 912 static int
 913 report_parse_callchain_opt(const struct option *opt, const char *arg, int unset)
 914 {
 915         struct callchain_param *callchain = opt->value;
 916
 917         callchain->enabled = !unset;
 918         /*
 919          * --no-call-graph
 920          */
 921         if (unset) {
 922                 symbol_conf.use_callchain = false;
 923                 callchain->mode = CHAIN_NONE;
 924                 return 0;
 925         }
 926
 927         return parse_callchain_report_opt(arg);
 928 }
 929
 930 static int
 931 parse_time_quantum(const struct option *opt, const char *arg,
 932                    int unset __maybe_unused)
 933 {
 934         unsigned long *time_q = opt->value;
 935         char *end;
 936
 937         *time_q = strtoul(arg, &end, 0);
 938         if (end == arg)
 939                 goto parse_err;
 940         if (*time_q == 0) {
 941                 pr_err("time quantum cannot be 0");
 942                 return -1;
 943         }
 944         while (isspace(*end))
 945                 end++;
 946         if (*end == 0)
 947                 return 0;
 948         if (!strcmp(end, "s")) {
 949                 *time_q *= NSEC_PER_SEC;
 950                 return 0;
 951         }
 952         if (!strcmp(end, "ms")) {
 953                 *time_q *= NSEC_PER_MSEC;
 954                 return 0;
 955         }
 956         if (!strcmp(end, "us")) {
 957                 *time_q *= NSEC_PER_USEC;
 958                 return 0;
 959         }
 960         if (!strcmp(end, "ns"))
 961                 return 0;
 962 parse_err:
 963         pr_err("Cannot parse time quantum `%s'\n", arg);
 964         return -1;
 965 }
 966
 967 int
 968 report_parse_ignore_callees_opt(const struct option *opt __maybe_unused,
 969                                 const char *arg, int unset __maybe_unused)
 970 {
 971         if (arg) {
 972                 int err = regcomp(&ignore_callees_regex, arg, REG_EXTENDED);
 973                 if (err) {
 974                         char buf[BUFSIZ];
 975                         regerror(err, &ignore_callees_regex, buf, sizeof(buf));
 976                         pr_err("Invalid --ignore-callees regex: %s\n%s", arg, buf);
 977                         return -1;
 978                 }
 979                 have_ignore_callees = 1;
 980         }
 981
 982         return 0;
 983 }
 984
 985 static int
 986 parse_branch_mode(const struct option *opt,
 987                   const char *str __maybe_unused, int unset)
 988 {
 989         int *branch_mode = opt->value;
 990
 991         *branch_mode = !unset;
 992         return 0;
 993 }
 994
 995 static int
 996 parse_percent_limit(const struct option *opt, const char *str,
 997                     int unset __maybe_unused)
 998 {
 999         struct report *rep = opt->value;
1000         double pcnt = strtof(str, NULL);
1001
1002         rep->min_percent = pcnt;
1003         callchain_param.min_percent = pcnt;
1004         return 0;
1005 }
1006
1007 int cmd_report(int argc, const char **argv)
1008 {
1009         struct perf_session *session;
1010         struct itrace_synth_opts itrace_synth_opts = { .set = 0, };
1011         struct stat st;
1012         bool has_br_stack = false;
1013         int branch_mode = -1;
1014         bool branch_call_mode = false;
1015 #define CALLCHAIN_DEFAULT_OPT  "graph,0.5,caller,function,percent"
1016         static const char report_callchain_help[] = "Display call graph (stack chain/backtrace):\n\n"
1017                                                     CALLCHAIN_REPORT_HELP
1018                                                     "\n\t\t\t\tDefault: " CALLCHAIN_DEFAULT_OPT;
1019         char callchain_default_opt[] = CALLCHAIN_DEFAULT_OPT;
1020         const char * const report_usage[] = {
1021                 "perf report [<options>]",
1022                 NULL
1023         };
1024         struct report report = {
1025                 .tool = {
1026                         .sample          = process_sample_event,
1027                         .mmap            = perf_event__process_mmap,
1028                         .mmap2           = perf_event__process_mmap2,
1029                         .comm            = perf_event__process_comm,
1030                         .namespaces      = perf_event__process_namespaces,
1031                         .exit            = perf_event__process_exit,
1032                         .fork            = perf_event__process_fork,
1033                         .lost            = perf_event__process_lost,
1034                         .read            = process_read_event,
1035                         .attr            = perf_event__process_attr,
1036                         .tracing_data    = perf_event__process_tracing_data,
1037                         .build_id        = perf_event__process_build_id,
1038                         .id_index        = perf_event__process_id_index,
1039                         .auxtrace_info   = perf_event__process_auxtrace_info,
1040                         .auxtrace        = perf_event__process_auxtrace,
1041                         .event_update    = perf_event__process_event_update,
1042                         .feature         = process_feature_event,
1043                         .ordered_events  = true,
1044                         .ordering_requires_timestamps = true,
1045                 },
1046                 .max_stack               = PERF_MAX_STACK_DEPTH,
1047                 .pretty_printing_style   = "normal",
1048                 .socket_filter           = -1,
1049                 .annotation_opts         = annotation__default_options,
1050         };
1051         const struct option options[] = {
1052         OPT_STRING('i', "input", &input_name, "file",
1053                     "input file name"),
1054         OPT_INCR('v', "verbose", &verbose,
1055                     "be more verbose (show symbol address, etc)"),
1056         OPT_BOOLEAN('q', "quiet", &quiet, "Do not show any message"),
1057         OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
1058                     "dump raw trace in ASCII"),
1059         OPT_BOOLEAN(0, "stats", &report.stats_mode, "Display event stats"),
1060         OPT_BOOLEAN(0, "tasks", &report.tasks_mode, "Display recorded tasks"),
1061         OPT_BOOLEAN(0, "mmaps", &report.mmaps_mode, "Display recorded tasks memory maps"),
1062         OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
1063                    "file", "vmlinux pathname"),
1064         OPT_BOOLEAN(0, "ignore-vmlinux", &symbol_conf.ignore_vmlinux,
1065                     "don't load vmlinux even if found"),
1066         OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name,
1067                    "file", "kallsyms pathname"),
1068         OPT_BOOLEAN('f', "force", &symbol_conf.force, "don't complain, do it"),
1069         OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
1070                     "load module symbols - WARNING: use only with -k and LIVE kernel"),
1071         OPT_BOOLEAN('n', "show-nr-samples", &symbol_conf.show_nr_samples,
1072                     "Show a column with the number of samples"),
1073         OPT_BOOLEAN('T', "threads", &report.show_threads,
1074                     "Show per-thread event counters"),
1075         OPT_STRING(0, "pretty", &report.pretty_printing_style, "key",
1076                    "pretty printing style key: normal raw"),
1077         OPT_BOOLEAN(0, "tui", &report.use_tui, "Use the TUI interface"),
1078         OPT_BOOLEAN(0, "gtk", &report.use_gtk, "Use the GTK2 interface"),
1079         OPT_BOOLEAN(0, "stdio", &report.use_stdio,
1080                     "Use the stdio interface"),
1081         OPT_BOOLEAN(0, "header", &report.header, "Show data header."),
1082         OPT_BOOLEAN(0, "header-only", &report.header_only,
1083                     "Show only data header."),
1084         OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
1085                    sort_help("sort by key(s):")),
1086         OPT_STRING('F', "fields", &field_order, "key[,keys...]",
1087                    sort_help("output field(s): overhead period sample ")),
1088         OPT_BOOLEAN(0, "show-cpu-utilization", &symbol_conf.show_cpu_utilization,
1089                     "Show sample percentage for different cpu modes"),
1090         OPT_BOOLEAN_FLAG(0, "showcpuutilization", &symbol_conf.show_cpu_utilization,
1091                     "Show sample percentage for different cpu modes", PARSE_OPT_HIDDEN),
1092         OPT_STRING('p', "parent", &parent_pattern, "regex",
1093                    "regex filter to identify parent, see: '--sort parent'"),
1094         OPT_BOOLEAN('x', "exclude-other", &symbol_conf.exclude_other,
1095                     "Only display entries with parent-match"),
1096         OPT_CALLBACK_DEFAULT('g', "call-graph", &callchain_param,
1097                              "print_type,threshold[,print_limit],order,sort_key[,branch],value",
1098                              report_callchain_help, &report_parse_callchain_opt,
1099                              callchain_default_opt),
1100         OPT_BOOLEAN(0, "children", &symbol_conf.cumulate_callchain,
1101                     "Accumulate callchains of children and show total overhead as well"),
1102         OPT_INTEGER(0, "max-stack", &report.max_stack,
1103                     "Set the maximum stack depth when parsing the callchain, "
1104                     "anything beyond the specified depth will be ignored. "
1105                     "Default: kernel.perf_event_max_stack or " __stringify(PERF_MAX_STACK_DEPTH)),
1106         OPT_BOOLEAN('G', "inverted", &report.inverted_callchain,
1107                     "alias for inverted call graph"),
1108         OPT_CALLBACK(0, "ignore-callees", NULL, "regex",
1109                    "ignore callees of these functions in call graphs",
1110                    report_parse_ignore_callees_opt),
1111         OPT_STRING('d', "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
1112                    "only consider symbols in these dsos"),
1113         OPT_STRING('c', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
1114                    "only consider symbols in these comms"),
1115         OPT_STRING(0, "pid", &symbol_conf.pid_list_str, "pid[,pid...]",
1116                    "only consider symbols in these pids"),
1117         OPT_STRING(0, "tid", &symbol_conf.tid_list_str, "tid[,tid...]",
1118                    "only consider symbols in these tids"),
1119         OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
1120                    "only consider these symbols"),
1121         OPT_STRING(0, "symbol-filter", &report.symbol_filter_str, "filter",
1122                    "only show symbols that (partially) match with this filter"),
1123         OPT_STRING('w', "column-widths", &symbol_conf.col_width_list_str,
1124                    "width[,width...]",
1125                    "don't try to adjust column width, use these fixed values"),
1126         OPT_STRING_NOEMPTY('t', "field-separator", &symbol_conf.field_sep, "separator",
1127                    "separator for columns, no spaces will be added between "
1128                    "columns '.' is reserved."),
1129         OPT_BOOLEAN('U', "hide-unresolved", &symbol_conf.hide_unresolved,
1130                     "Only display entries resolved to a symbol"),
1131         OPT_CALLBACK(0, "symfs", NULL, "directory",
1132                      "Look for files with symbols relative to this directory",
1133                      symbol__config_symfs),
1134         OPT_STRING('C', "cpu", &report.cpu_list, "cpu",
1135                    "list of cpus to profile"),
1136         OPT_BOOLEAN('I', "show-info", &report.show_full_info,
1137                     "Display extended information about perf.data file"),
1138         OPT_BOOLEAN(0, "source", &report.annotation_opts.annotate_src,
1139                     "Interleave source code with assembly code (default)"),
1140         OPT_BOOLEAN(0, "asm-raw", &report.annotation_opts.show_asm_raw,
1141                     "Display raw encoding of assembly instructions (default)"),
1142         OPT_STRING('M', "disassembler-style", &report.annotation_opts.disassembler_style, "disassembler style",
1143                    "Specify disassembler style (e.g. -M intel for intel syntax)"),
1144         OPT_BOOLEAN(0, "show-total-period", &symbol_conf.show_total_period,
1145                     "Show a column with the sum of periods"),
1146         OPT_BOOLEAN_SET(0, "group", &symbol_conf.event_group, &report.group_set,
1147                     "Show event group information together"),
1148         OPT_CALLBACK_NOOPT('b', "branch-stack", &branch_mode, "",
1149                     "use branch records for per branch histogram filling",
1150                     parse_branch_mode),
1151         OPT_BOOLEAN(0, "branch-history", &branch_call_mode,
1152                     "add last branch records to call history"),
1153         OPT_STRING(0, "objdump", &report.annotation_opts.objdump_path, "path",
1154                    "objdump binary to use for disassembly and annotations"),
1155         OPT_BOOLEAN(0, "demangle", &symbol_conf.demangle,
1156                     "Disable symbol demangling"),
1157         OPT_BOOLEAN(0, "demangle-kernel", &symbol_conf.demangle_kernel,
1158                     "Enable kernel symbol demangling"),
1159         OPT_BOOLEAN(0, "mem-mode", &report.mem_mode, "mem access profile"),
1160         OPT_INTEGER(0, "samples", &symbol_conf.res_sample,
1161                     "Number of samples to save per histogram entry for individual browsing"),
1162         OPT_CALLBACK(0, "percent-limit", &report, "percent",
1163                      "Don't show entries under that percent", parse_percent_limit),
1164         OPT_CALLBACK(0, "percentage", NULL, "relative|absolute",
1165                      "how to display percentage of filtered entries", parse_filter_percentage),
1166         OPT_CALLBACK_OPTARG(0, "itrace", &itrace_synth_opts, NULL, "opts",
1167                             "Instruction Tracing options\n" ITRACE_HELP,
1168                             itrace_parse_synth_opts),
1169         OPT_BOOLEAN(0, "full-source-path", &srcline_full_filename,
1170                         "Show full source file name path for source lines"),
1171         OPT_BOOLEAN(0, "show-ref-call-graph", &symbol_conf.show_ref_callgraph,
1172                     "Show callgraph from reference event"),
1173         OPT_INTEGER(0, "socket-filter", &report.socket_filter,
1174                     "only show processor socket that match with this filter"),
1175         OPT_BOOLEAN(0, "raw-trace", &symbol_conf.raw_trace,
1176                     "Show raw trace event output (do not use print fmt or plugins)"),
1177         OPT_BOOLEAN(0, "hierarchy", &symbol_conf.report_hierarchy,
1178                     "Show entries in a hierarchy"),
1179         OPT_CALLBACK_DEFAULT(0, "stdio-color", NULL, "mode",
1180                              "'always' (default), 'never' or 'auto' only applicable to --stdio mode",
1181                              stdio__config_color, "always"),
1182         OPT_STRING(0, "time", &report.time_str, "str",
1183                    "Time span of interest (start,stop)"),
1184         OPT_BOOLEAN(0, "inline", &symbol_conf.inline_name,
1185                     "Show inline function"),
1186         OPT_CALLBACK(0, "percent-type", &report.annotation_opts, "local-period",
1187                      "Set percent type local/global-period/hits",
1188                      annotate_parse_percent_type),
1189         OPT_BOOLEAN(0, "ns", &symbol_conf.nanosecs, "Show times in nanosecs"),
1190         OPT_CALLBACK(0, "time-quantum", &symbol_conf.time_quantum, "time (ms|us|ns|s)",
1191                      "Set time quantum for time sort key (default 100ms)",
1192                      parse_time_quantum),
1193         OPT_END()
1194         };
1195         struct perf_data data = {
1196                 .mode  = PERF_DATA_MODE_READ,
1197         };
1198         int ret = hists__init();
1199         char sort_tmp[128];
1200
1201         if (ret < 0)
1202                 return ret;
1203
1204         ret = perf_config(report__config, &report);
1205         if (ret)
1206                 return ret;
1207
1208         argc = parse_options(argc, argv, options, report_usage, 0);
1209         if (argc) {
1210                 /*
1211                  * Special case: if there's an argument left then assume that
1212                  * it's a symbol filter:
1213                  */
1214                 if (argc > 1)
1215                         usage_with_options(report_usage, options);
1216
1217                 report.symbol_filter_str = argv[0];
1218         }
1219
1220         if (report.mmaps_mode)
1221                 report.tasks_mode = true;
1222
1223         if (quiet)
1224                 perf_quiet_option();
1225
1226         if (symbol_conf.vmlinux_name &&
1227             access(symbol_conf.vmlinux_name, R_OK)) {
1228                 pr_err("Invalid file: %s\n", symbol_conf.vmlinux_name);
1229                 return -EINVAL;
1230         }
1231         if (symbol_conf.kallsyms_name &&
1232             access(symbol_conf.kallsyms_name, R_OK)) {
1233                 pr_err("Invalid file: %s\n", symbol_conf.kallsyms_name);
1234                 return -EINVAL;
1235         }
1236
1237         if (report.inverted_callchain)
1238                 callchain_param.order = ORDER_CALLER;
1239         if (symbol_conf.cumulate_callchain && !callchain_param.order_set)
1240                 callchain_param.order = ORDER_CALLER;
1241
1242         if (itrace_synth_opts.callchain &&
1243             (int)itrace_synth_opts.callchain_sz > report.max_stack)
1244                 report.max_stack = itrace_synth_opts.callchain_sz;
1245
1246         if (!input_name || !strlen(input_name)) {
1247                 if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
1248                         input_name = "-";
1249                 else
1250                         input_name = "perf.data";
1251         }
1252
1253         data.path  = input_name;
1254         data.force = symbol_conf.force;
1255
1256 repeat:
1257         session = perf_session__new(&data, false, &report.tool);
1258         if (session == NULL)
1259                 return -1;
1260
1261         if (zstd_init(&(session->zstd_data), 0) < 0)
1262                 pr_warning("Decompression initialization failed. Reported data may be incomplete.\n");
1263
1264         if (report.queue_size) {
1265                 ordered_events__set_alloc_size(&session->ordered_events,
1266                                                report.queue_size);
1267         }
1268
1269         session->itrace_synth_opts = &itrace_synth_opts;
1270
1271         report.session = session;
1272
1273         has_br_stack = perf_header__has_feat(&session->header,
1274                                              HEADER_BRANCH_STACK);
1275
1276         setup_forced_leader(&report, session->evlist);
1277
1278         if (itrace_synth_opts.last_branch)
1279                 has_br_stack = true;
1280
1281         if (has_br_stack && branch_call_mode)
1282                 symbol_conf.show_branchflag_count = true;
1283
1284         memset(&report.brtype_stat, 0, sizeof(struct branch_type_stat));
1285
1286         /*
1287          * Branch mode is a tristate:
1288          * -1 means default, so decide based on the file having branch data.
1289          * 0/1 means the user chose a mode.
1290          */
1291         if (((branch_mode == -1 && has_br_stack) || branch_mode == 1) &&
1292             !branch_call_mode) {
1293                 sort__mode = SORT_MODE__BRANCH;
1294                 symbol_conf.cumulate_callchain = false;
1295         }
1296         if (branch_call_mode) {
1297                 callchain_param.key = CCKEY_ADDRESS;
1298                 callchain_param.branch_callstack = 1;
1299                 symbol_conf.use_callchain = true;
1300                 callchain_register_param(&callchain_param);
1301                 if (sort_order == NULL)
1302                         sort_order = "srcline,symbol,dso";
1303         }
1304
1305         if (report.mem_mode) {
1306                 if (sort__mode == SORT_MODE__BRANCH) {
1307                         pr_err("branch and mem mode incompatible\n");
1308                         goto error;
1309                 }
1310                 sort__mode = SORT_MODE__MEMORY;
1311                 symbol_conf.cumulate_callchain = false;
1312         }
1313
1314         if (symbol_conf.report_hierarchy) {
1315                 /* disable incompatible options */
1316                 symbol_conf.cumulate_callchain = false;
1317
1318                 if (field_order) {
1319                         pr_err("Error: --hierarchy and --fields options cannot be used together\n");
1320                         parse_options_usage(report_usage, options, "F", 1);
1321                         parse_options_usage(NULL, options, "hierarchy", 0);
1322                         goto error;
1323                 }
1324
1325                 perf_hpp_list.need_collapse = true;
1326         }
1327
1328         if (report.use_stdio)
1329                 use_browser = 0;
1330         else if (report.use_tui)
1331                 use_browser = 1;
1332         else if (report.use_gtk)
1333                 use_browser = 2;
1334
1335         /* Force tty output for header output and per-thread stat. */
1336         if (report.header || report.header_only || report.show_threads)
1337                 use_browser = 0;
1338         if (report.header || report.header_only)
1339                 report.tool.show_feat_hdr = SHOW_FEAT_HEADER;
1340         if (report.show_full_info)
1341                 report.tool.show_feat_hdr = SHOW_FEAT_HEADER_FULL_INFO;
1342         if (report.stats_mode || report.tasks_mode)
1343                 use_browser = 0;
1344         if (report.stats_mode && report.tasks_mode) {
1345                 pr_err("Error: --tasks and --mmaps can't be used together with --stats\n");
1346                 goto error;
1347         }
1348
1349         if (strcmp(input_name, "-") != 0)
1350                 setup_browser(true);
1351         else
1352                 use_browser = 0;
1353
1354         if (sort_order && strstr(sort_order, "ipc")) {
1355                 parse_options_usage(report_usage, options, "s", 1);
1356                 goto error;
1357         }
1358
1359         if (sort_order && strstr(sort_order, "symbol")) {
1360                 if (sort__mode == SORT_MODE__BRANCH) {
1361                         snprintf(sort_tmp, sizeof(sort_tmp), "%s,%s",
1362                                  sort_order, "ipc_lbr");
1363                         report.symbol_ipc = true;
1364                 } else {
1365                         snprintf(sort_tmp, sizeof(sort_tmp), "%s,%s",
1366                                  sort_order, "ipc_null");
1367                 }
1368
1369                 sort_order = sort_tmp;
1370         }
1371
1372         if (setup_sorting(session->evlist) < 0) {
1373                 if (sort_order)
1374                         parse_options_usage(report_usage, options, "s", 1);
1375                 if (field_order)
1376                         parse_options_usage(sort_order ? NULL : report_usage,
1377                                             options, "F", 1);
1378                 goto error;
1379         }
1380
1381         if ((report.header || report.header_only) && !quiet) {
1382                 perf_session__fprintf_info(session, stdout,
1383                                            report.show_full_info);
1384                 if (report.header_only) {
1385                         ret = 0;
1386                         goto error;
1387                 }
1388         } else if (use_browser == 0 && !quiet &&
1389                    !report.stats_mode && !report.tasks_mode) {
1390                 fputs("# To display the perf.data header info, please use --header/--header-only options.\n#\n",
1391                       stdout);
1392         }
1393
1394         /*
1395          * Only in the TUI browser we are doing integrated annotation,
1396          * so don't allocate extra space that won't be used in the stdio
1397          * implementation.
1398          */
1399         if (ui__has_annotation() || report.symbol_ipc) {
1400                 ret = symbol__annotation_init();
1401                 if (ret < 0)
1402                         goto error;
1403                 /*
1404                  * For searching by name on the "Browse map details".
1405                  * providing it only in verbose mode not to bloat too
1406                  * much struct symbol.
1407                  */
1408                 if (verbose > 0) {
1409                         /*
1410                          * XXX: Need to provide a less kludgy way to ask for
1411                          * more space per symbol, the u32 is for the index on
1412                          * the ui browser.
1413                          * See symbol__browser_index.
1414                          */
1415                         symbol_conf.priv_size += sizeof(u32);
1416                         symbol_conf.sort_by_name = true;
1417                 }
1418                 annotation_config__init();
1419         }
1420
1421         if (symbol__init(&session->header.env) < 0)
1422                 goto error;
1423
1424         if (report.time_str) {
1425                 ret = perf_time__parse_for_ranges(report.time_str, session,
1426                                                   &report.ptime_range,
1427                                                   &report.range_size,
1428                                                   &report.range_num);
1429                 if (ret < 0)
1430                         goto error;
1431         }
1432
1433         if (session->tevent.pevent &&
1434             tep_set_function_resolver(session->tevent.pevent,
1435                                       machine__resolve_kernel_addr,
1436                                       &session->machines.host) < 0) {
1437                 pr_err("%s: failed to set libtraceevent function resolver\n",
1438                        __func__);
1439                 return -1;
1440         }
1441
1442         sort__setup_elide(stdout);
1443
1444         ret = __cmd_report(&report);
1445         if (ret == K_SWITCH_INPUT_DATA) {
1446                 perf_session__delete(session);
1447                 goto repeat;
1448         } else
1449                 ret = 0;
1450
1451 error:
1452         if (report.ptime_range)
1453                 zfree(&report.ptime_range);
1454         zstd_fini(&(session->zstd_data));
1455         perf_session__delete(session);
1456         return ret;
1457 }