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/map_symbol.h"
  23 #include "util/mem-events.h"
  24 #include "util/branch.h"
  25 #include "util/callchain.h"
  26 #include "util/values.h"
  27
  28 #include "perf.h"
  29 #include "util/debug.h"
  30 #include "util/evlist.h"
  31 #include "util/evsel.h"
  32 #include "util/evswitch.h"
  33 #include "util/header.h"
  34 #include "util/session.h"
  35 #include "util/srcline.h"
  36 #include "util/tool.h"
  37
  38 #include <subcmd/parse-options.h>
  39 #include <subcmd/exec-cmd.h>
  40 #include "util/parse-events.h"
  41
  42 #include "util/thread.h"
  43 #include "util/sort.h"
  44 #include "util/hist.h"
  45 #include "util/data.h"
  46 #include "arch/common.h"
  47 #include "util/time-utils.h"
  48 #include "util/auxtrace.h"
  49 #include "util/units.h"
  50 #include "util/branch.h"
  51 #include "util/util.h"
  52 #include "ui/ui.h"
  53 #include "ui/progress.h"
  54
  55 #include <dlfcn.h>
  56 #include <errno.h>
  57 #include <inttypes.h>
  58 #include <regex.h>
  59 #include <linux/ctype.h>
  60 #include <signal.h>
  61 #include <linux/bitmap.h>
  62 #include <linux/string.h>
  63 #include <linux/stringify.h>
  64 #include <linux/time64.h>
  65 #include <sys/types.h>
  66 #include <sys/stat.h>
  67 #include <unistd.h>
  68 #include <linux/mman.h>
  69
  70 struct report {
  71         struct perf_tool        tool;
  72         struct perf_session     *session;
  73         struct evswitch         evswitch;
  74         bool                    use_tui, use_gtk, use_stdio;
  75         bool                    show_full_info;
  76         bool                    show_threads;
  77         bool                    inverted_callchain;
  78         bool                    mem_mode;
  79         bool                    stats_mode;
  80         bool                    tasks_mode;
  81         bool                    mmaps_mode;
  82         bool                    header;
  83         bool                    header_only;
  84         bool                    nonany_branch_mode;
  85         bool                    group_set;
  86         int                     max_stack;
  87         struct perf_read_values show_threads_values;
  88         struct annotation_options annotation_opts;
  89         const char              *pretty_printing_style;
  90         const char              *cpu_list;
  91         const char              *symbol_filter_str;
  92         const char              *time_str;
  93         struct perf_time_interval *ptime_range;
  94         int                     range_size;
  95         int                     range_num;
  96         float                   min_percent;
  97         u64                     nr_entries;
  98         u64                     queue_size;
  99         int                     socket_filter;
 100         DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
 101         struct branch_type_stat brtype_stat;
 102         bool                    symbol_ipc;
 103 };
 104
 105 static int report__config(const char *var, const char *value, void *cb)
 106 {
 107         struct report *rep = cb;
 108
 109         if (!strcmp(var, "report.group")) {
 110                 symbol_conf.event_group = perf_config_bool(var, value);
 111                 return 0;
 112         }
 113         if (!strcmp(var, "report.percent-limit")) {
 114                 double pcnt = strtof(value, NULL);
 115
 116                 rep->min_percent = pcnt;
 117                 callchain_param.min_percent = pcnt;
 118                 return 0;
 119         }
 120         if (!strcmp(var, "report.children")) {
 121                 symbol_conf.cumulate_callchain = perf_config_bool(var, value);
 122                 return 0;
 123         }
 124         if (!strcmp(var, "report.queue-size"))
 125                 return perf_config_u64(&rep->queue_size, var, value);
 126
 127         if (!strcmp(var, "report.sort_order")) {
 128                 default_sort_order = strdup(value);
 129                 return 0;
 130         }
 131
 132         return 0;
 133 }
 134
 135 static int hist_iter__report_callback(struct hist_entry_iter *iter,
 136                                       struct addr_location *al, bool single,
 137                                       void *arg)
 138 {
 139         int err = 0;
 140         struct report *rep = arg;
 141         struct hist_entry *he = iter->he;
 142         struct evsel *evsel = iter->evsel;
 143         struct perf_sample *sample = iter->sample;
 144         struct mem_info *mi;
 145         struct branch_info *bi;
 146
 147         if (!ui__has_annotation() && !rep->symbol_ipc)
 148                 return 0;
 149
 150         if (sort__mode == SORT_MODE__BRANCH) {
 151                 bi = he->branch_info;
 152                 err = addr_map_symbol__inc_samples(&bi->from, sample, evsel);
 153                 if (err)
 154                         goto out;
 155
 156                 err = addr_map_symbol__inc_samples(&bi->to, sample, evsel);
 157
 158         } else if (rep->mem_mode) {
 159                 mi = he->mem_info;
 160                 err = addr_map_symbol__inc_samples(&mi->daddr, sample, evsel);
 161                 if (err)
 162                         goto out;
 163
 164                 err = hist_entry__inc_addr_samples(he, sample, evsel, al->addr);
 165
 166         } else if (symbol_conf.cumulate_callchain) {
 167                 if (single)
 168                         err = hist_entry__inc_addr_samples(he, sample, evsel, al->addr);
 169         } else {
 170                 err = hist_entry__inc_addr_samples(he, sample, evsel, al->addr);
 171         }
 172
 173 out:
 174         return err;
 175 }
 176
 177 static int hist_iter__branch_callback(struct hist_entry_iter *iter,
 178                                       struct addr_location *al __maybe_unused,
 179                                       bool single __maybe_unused,
 180                                       void *arg)
 181 {
 182         struct hist_entry *he = iter->he;
 183         struct report *rep = arg;
 184         struct branch_info *bi;
 185         struct perf_sample *sample = iter->sample;
 186         struct evsel *evsel = iter->evsel;
 187         int err;
 188
 189         if (!ui__has_annotation() && !rep->symbol_ipc)
 190                 return 0;
 191
 192         bi = he->branch_info;
 193         err = addr_map_symbol__inc_samples(&bi->from, sample, evsel);
 194         if (err)
 195                 goto out;
 196
 197         err = addr_map_symbol__inc_samples(&bi->to, sample, evsel);
 198
 199         branch_type_count(&rep->brtype_stat, &bi->flags,
 200                           bi->from.addr, bi->to.addr);
 201
 202 out:
 203         return err;
 204 }
 205
 206 static void setup_forced_leader(struct report *report,
 207                                 struct evlist *evlist)
 208 {
 209         if (report->group_set)
 210                 perf_evlist__force_leader(evlist);
 211 }
 212
 213 static int process_feature_event(struct perf_session *session,
 214                                  union perf_event *event)
 215 {
 216         struct report *rep = container_of(session->tool, struct report, tool);
 217
 218         if (event->feat.feat_id < HEADER_LAST_FEATURE)
 219                 return perf_event__process_feature(session, event);
 220
 221         if (event->feat.feat_id != HEADER_LAST_FEATURE) {
 222                 pr_err("failed: wrong feature ID: %" PRI_lu64 "\n",
 223                        event->feat.feat_id);
 224                 return -1;
 225         }
 226
 227         /*
 228          * (feat_id = HEADER_LAST_FEATURE) is the end marker which
 229          * means all features are received, now we can force the
 230          * group if needed.
 231          */
 232         setup_forced_leader(rep, session->evlist);
 233         return 0;
 234 }
 235
 236 static int process_sample_event(struct perf_tool *tool,
 237                                 union perf_event *event,
 238                                 struct perf_sample *sample,
 239                                 struct evsel *evsel,
 240                                 struct machine *machine)
 241 {
 242         struct report *rep = container_of(tool, struct report, tool);
 243         struct addr_location al;
 244         struct hist_entry_iter iter = {
 245                 .evsel                  = evsel,
 246                 .sample                 = sample,
 247                 .hide_unresolved        = symbol_conf.hide_unresolved,
 248                 .add_entry_cb           = hist_iter__report_callback,
 249         };
 250         int ret = 0;
 251
 252         if (perf_time__ranges_skip_sample(rep->ptime_range, rep->range_num,
 253                                           sample->time)) {
 254                 return 0;
 255         }
 256
 257         if (evswitch__discard(&rep->evswitch, evsel))
 258                 return 0;
 259
 260         if (machine__resolve(machine, &al, sample) < 0) {
 261                 pr_debug("problem processing %d event, skipping it.\n",
 262                          event->header.type);
 263                 return -1;
 264         }
 265
 266         if (symbol_conf.hide_unresolved && al.sym == NULL)
 267                 goto out_put;
 268
 269         if (rep->cpu_list && !test_bit(sample->cpu, rep->cpu_bitmap))
 270                 goto out_put;
 271
 272         if (sort__mode == SORT_MODE__BRANCH) {
 273                 /*
 274                  * A non-synthesized event might not have a branch stack if
 275                  * branch stacks have been synthesized (using itrace options).
 276                  */
 277                 if (!sample->branch_stack)
 278                         goto out_put;
 279
 280                 iter.add_entry_cb = hist_iter__branch_callback;
 281                 iter.ops = &hist_iter_branch;
 282         } else if (rep->mem_mode) {
 283                 iter.ops = &hist_iter_mem;
 284         } else if (symbol_conf.cumulate_callchain) {
 285                 iter.ops = &hist_iter_cumulative;
 286         } else {
 287                 iter.ops = &hist_iter_normal;
 288         }
 289
 290         if (al.map != NULL)
 291                 al.map->dso->hit = 1;
 292
 293         if (ui__has_annotation() || rep->symbol_ipc) {
 294                 hist__account_cycles(sample->branch_stack, &al, sample,
 295                                      rep->nonany_branch_mode);
 296         }
 297
 298         ret = hist_entry_iter__add(&iter, &al, rep->max_stack, rep);
 299         if (ret < 0)
 300                 pr_debug("problem adding hist entry, skipping event\n");
 301 out_put:
 302         addr_location__put(&al);
 303         return ret;
 304 }
 305
 306 static int process_read_event(struct perf_tool *tool,
 307                               union perf_event *event,
 308                               struct perf_sample *sample __maybe_unused,
 309                               struct evsel *evsel,
 310                               struct machine *machine __maybe_unused)
 311 {
 312         struct report *rep = container_of(tool, struct report, tool);
 313
 314         if (rep->show_threads) {
 315                 const char *name = perf_evsel__name(evsel);
 316                 int err = perf_read_values_add_value(&rep->show_threads_values,
 317                                            event->read.pid, event->read.tid,
 318                                            evsel->idx,
 319                                            name,
 320                                            event->read.value);
 321
 322                 if (err)
 323                         return err;
 324         }
 325
 326         return 0;
 327 }
 328
 329 /* For pipe mode, sample_type is not currently set */
 330 static int report__setup_sample_type(struct report *rep)
 331 {
 332         struct perf_session *session = rep->session;
 333         u64 sample_type = perf_evlist__combined_sample_type(session->evlist);
 334         bool is_pipe = perf_data__is_pipe(session->data);
 335
 336         if (session->itrace_synth_opts->callchain ||
 337             (!is_pipe &&
 338              perf_header__has_feat(&session->header, HEADER_AUXTRACE) &&
 339              !session->itrace_synth_opts->set))
 340                 sample_type |= PERF_SAMPLE_CALLCHAIN;
 341
 342         if (session->itrace_synth_opts->last_branch)
 343                 sample_type |= PERF_SAMPLE_BRANCH_STACK;
 344
 345         if (!is_pipe && !(sample_type & PERF_SAMPLE_CALLCHAIN)) {
 346                 if (perf_hpp_list.parent) {
 347                         ui__error("Selected --sort parent, but no "
 348                                     "callchain data. Did you call "
 349                                     "'perf record' without -g?\n");
 350                         return -EINVAL;
 351                 }
 352                 if (symbol_conf.use_callchain &&
 353                         !symbol_conf.show_branchflag_count) {
 354                         ui__error("Selected -g or --branch-history.\n"
 355                                   "But no callchain or branch data.\n"
 356                                   "Did you call 'perf record' without -g or -b?\n");
 357                         return -1;
 358                 }
 359         } else if (!callchain_param.enabled &&
 360                    callchain_param.mode != CHAIN_NONE &&
 361                    !symbol_conf.use_callchain) {
 362                         symbol_conf.use_callchain = true;
 363                         if (callchain_register_param(&callchain_param) < 0) {
 364                                 ui__error("Can't register callchain params.\n");
 365                                 return -EINVAL;
 366                         }
 367         }
 368
 369         if (symbol_conf.cumulate_callchain) {
 370                 /* Silently ignore if callchain is missing */
 371                 if (!(sample_type & PERF_SAMPLE_CALLCHAIN)) {
 372                         symbol_conf.cumulate_callchain = false;
 373                         perf_hpp__cancel_cumulate();
 374                 }
 375         }
 376
 377         if (sort__mode == SORT_MODE__BRANCH) {
 378                 if (!is_pipe &&
 379                     !(sample_type & PERF_SAMPLE_BRANCH_STACK)) {
 380                         ui__error("Selected -b but no branch data. "
 381                                   "Did you call perf record without -b?\n");
 382                         return -1;
 383                 }
 384         }
 385
 386         if (symbol_conf.use_callchain || symbol_conf.cumulate_callchain) {
 387                 if ((sample_type & PERF_SAMPLE_REGS_USER) &&
 388                     (sample_type & PERF_SAMPLE_STACK_USER)) {
 389                         callchain_param.record_mode = CALLCHAIN_DWARF;
 390                         dwarf_callchain_users = true;
 391                 } else if (sample_type & PERF_SAMPLE_BRANCH_STACK)
 392                         callchain_param.record_mode = CALLCHAIN_LBR;
 393                 else
 394                         callchain_param.record_mode = CALLCHAIN_FP;
 395         }
 396
 397         /* ??? handle more cases than just ANY? */
 398         if (!(perf_evlist__combined_branch_type(session->evlist) &
 399                                 PERF_SAMPLE_BRANCH_ANY))
 400                 rep->nonany_branch_mode = true;
 401
 402         return 0;
 403 }
 404
 405 static void sig_handler(int sig __maybe_unused)
 406 {
 407         session_done = 1;
 408 }
 409
 410 static size_t hists__fprintf_nr_sample_events(struct hists *hists, struct report *rep,
 411                                               const char *evname, FILE *fp)
 412 {
 413         size_t ret;
 414         char unit;
 415         unsigned long nr_samples = hists->stats.nr_events[PERF_RECORD_SAMPLE];
 416         u64 nr_events = hists->stats.total_period;
 417         struct evsel *evsel = hists_to_evsel(hists);
 418         char buf[512];
 419         size_t size = sizeof(buf);
 420         int socked_id = hists->socket_filter;
 421
 422         if (quiet)
 423                 return 0;
 424
 425         if (symbol_conf.filter_relative) {
 426                 nr_samples = hists->stats.nr_non_filtered_samples;
 427                 nr_events = hists->stats.total_non_filtered_period;
 428         }
 429
 430         if (perf_evsel__is_group_event(evsel)) {
 431                 struct evsel *pos;
 432
 433                 perf_evsel__group_desc(evsel, buf, size);
 434                 evname = buf;
 435
 436                 for_each_group_member(pos, evsel) {
 437                         const struct hists *pos_hists = evsel__hists(pos);
 438
 439                         if (symbol_conf.filter_relative) {
 440                                 nr_samples += pos_hists->stats.nr_non_filtered_samples;
 441                                 nr_events += pos_hists->stats.total_non_filtered_period;
 442                         } else {
 443                                 nr_samples += pos_hists->stats.nr_events[PERF_RECORD_SAMPLE];
 444                                 nr_events += pos_hists->stats.total_period;
 445                         }
 446                 }
 447         }
 448
 449         nr_samples = convert_unit(nr_samples, &unit);
 450         ret = fprintf(fp, "# Samples: %lu%c", nr_samples, unit);
 451         if (evname != NULL) {
 452                 ret += fprintf(fp, " of event%s '%s'",
 453                                evsel->core.nr_members > 1 ? "s" : "", evname);
 454         }
 455
 456         if (rep->time_str)
 457                 ret += fprintf(fp, " (time slices: %s)", rep->time_str);
 458
 459         if (symbol_conf.show_ref_callgraph &&
 460             strstr(evname, "call-graph=no")) {
 461                 ret += fprintf(fp, ", show reference callgraph");
 462         }
 463
 464         if (rep->mem_mode) {
 465                 ret += fprintf(fp, "\n# Total weight : %" PRIu64, nr_events);
 466                 ret += fprintf(fp, "\n# Sort order   : %s", sort_order ? : default_mem_sort_order);
 467         } else
 468                 ret += fprintf(fp, "\n# Event count (approx.): %" PRIu64, nr_events);
 469
 470         if (socked_id > -1)
 471                 ret += fprintf(fp, "\n# Processor Socket: %d", socked_id);
 472
 473         return ret + fprintf(fp, "\n#\n");
 474 }
 475
 476 static int perf_evlist__tty_browse_hists(struct evlist *evlist,
 477                                          struct report *rep,
 478                                          const char *help)
 479 {
 480         struct evsel *pos;
 481
 482         if (!quiet) {
 483                 fprintf(stdout, "#\n# Total Lost Samples: %" PRIu64 "\n#\n",
 484                         evlist->stats.total_lost_samples);
 485         }
 486
 487         evlist__for_each_entry(evlist, pos) {
 488                 struct hists *hists = evsel__hists(pos);
 489                 const char *evname = perf_evsel__name(pos);
 490
 491                 if (symbol_conf.event_group &&
 492                     !perf_evsel__is_group_leader(pos))
 493                         continue;
 494
 495                 hists__fprintf_nr_sample_events(hists, rep, evname, stdout);
 496                 hists__fprintf(hists, !quiet, 0, 0, rep->min_percent, stdout,
 497                                !(symbol_conf.use_callchain ||
 498                                  symbol_conf.show_branchflag_count));
 499                 fprintf(stdout, "\n\n");
 500         }
 501
 502         if (!quiet)
 503                 fprintf(stdout, "#\n# (%s)\n#\n", help);
 504
 505         if (rep->show_threads) {
 506                 bool style = !strcmp(rep->pretty_printing_style, "raw");
 507                 perf_read_values_display(stdout, &rep->show_threads_values,
 508                                          style);
 509                 perf_read_values_destroy(&rep->show_threads_values);
 510         }
 511
 512         if (sort__mode == SORT_MODE__BRANCH)
 513                 branch_type_stat_display(stdout, &rep->brtype_stat);
 514
 515         return 0;
 516 }
 517
 518 static void report__warn_kptr_restrict(const struct report *rep)
 519 {
 520         struct map *kernel_map = machine__kernel_map(&rep->session->machines.host);
 521         struct kmap *kernel_kmap = kernel_map ? map__kmap(kernel_map) : NULL;
 522
 523         if (perf_evlist__exclude_kernel(rep->session->evlist))
 524                 return;
 525
 526         if (kernel_map == NULL ||
 527             (kernel_map->dso->hit &&
 528              (kernel_kmap->ref_reloc_sym == NULL ||
 529               kernel_kmap->ref_reloc_sym->addr == 0))) {
 530                 const char *desc =
 531                     "As no suitable kallsyms nor vmlinux was found, kernel samples\n"
 532                     "can't be resolved.";
 533
 534                 if (kernel_map && map__has_symbols(kernel_map)) {
 535                         desc = "If some relocation was applied (e.g. "
 536                                "kexec) symbols may be misresolved.";
 537                 }
 538
 539                 ui__warning(
 540 "Kernel address maps (/proc/{kallsyms,modules}) were restricted.\n\n"
 541 "Check /proc/sys/kernel/kptr_restrict before running 'perf record'.\n\n%s\n\n"
 542 "Samples in kernel modules can't be resolved as well.\n\n",
 543                 desc);
 544         }
 545 }
 546
 547 static int report__gtk_browse_hists(struct report *rep, const char *help)
 548 {
 549         int (*hist_browser)(struct evlist *evlist, const char *help,
 550                             struct hist_browser_timer *timer, float min_pcnt);
 551
 552         hist_browser = dlsym(perf_gtk_handle, "perf_evlist__gtk_browse_hists");
 553
 554         if (hist_browser == NULL) {
 555                 ui__error("GTK browser not found!\n");
 556                 return -1;
 557         }
 558
 559         return hist_browser(rep->session->evlist, help, NULL, rep->min_percent);
 560 }
 561
 562 static int report__browse_hists(struct report *rep)
 563 {
 564         int ret;
 565         struct perf_session *session = rep->session;
 566         struct evlist *evlist = session->evlist;
 567         const char *help = perf_tip(system_path(TIPDIR));
 568
 569         if (help == NULL) {
 570                 /* fallback for people who don't install perf ;-) */
 571                 help = perf_tip(DOCDIR);
 572                 if (help == NULL)
 573                         help = "Cannot load tips.txt file, please install perf!";
 574         }
 575
 576         switch (use_browser) {
 577         case 1:
 578                 ret = perf_evlist__tui_browse_hists(evlist, help, NULL,
 579                                                     rep->min_percent,
 580                                                     &session->header.env,
 581                                                     true, &rep->annotation_opts);
 582                 /*
 583                  * Usually "ret" is the last pressed key, and we only
 584                  * care if the key notifies us to switch data file.
 585                  */
 586                 if (ret != K_SWITCH_INPUT_DATA)
 587                         ret = 0;
 588                 break;
 589         case 2:
 590                 ret = report__gtk_browse_hists(rep, help);
 591                 break;
 592         default:
 593                 ret = perf_evlist__tty_browse_hists(evlist, rep, help);
 594                 break;
 595         }
 596
 597         return ret;
 598 }
 599
 600 static int report__collapse_hists(struct report *rep)
 601 {
 602         struct ui_progress prog;
 603         struct evsel *pos;
 604         int ret = 0;
 605
 606         ui_progress__init(&prog, rep->nr_entries, "Merging related events...");
 607
 608         evlist__for_each_entry(rep->session->evlist, pos) {
 609                 struct hists *hists = evsel__hists(pos);
 610
 611                 if (pos->idx == 0)
 612                         hists->symbol_filter_str = rep->symbol_filter_str;
 613
 614                 hists->socket_filter = rep->socket_filter;
 615
 616                 ret = hists__collapse_resort(hists, &prog);
 617                 if (ret < 0)
 618                         break;
 619
 620                 /* Non-group events are considered as leader */
 621                 if (symbol_conf.event_group &&
 622                     !perf_evsel__is_group_leader(pos)) {
 623                         struct hists *leader_hists = evsel__hists(pos->leader);
 624
 625                         hists__match(leader_hists, hists);
 626                         hists__link(leader_hists, hists);
 627                 }
 628         }
 629
 630         ui_progress__finish();
 631         return ret;
 632 }
 633
 634 static int hists__resort_cb(struct hist_entry *he, void *arg)
 635 {
 636         struct report *rep = arg;
 637         struct symbol *sym = he->ms.sym;
 638
 639         if (rep->symbol_ipc && sym && !sym->annotate2) {
 640                 struct evsel *evsel = hists_to_evsel(he->hists);
 641
 642                 symbol__annotate2(sym, he->ms.map, evsel,
 643                                   &annotation__default_options, NULL);
 644         }
 645
 646         return 0;
 647 }
 648
 649 static void report__output_resort(struct report *rep)
 650 {
 651         struct ui_progress prog;
 652         struct evsel *pos;
 653
 654         ui_progress__init(&prog, rep->nr_entries, "Sorting events for output...");
 655
 656         evlist__for_each_entry(rep->session->evlist, pos) {
 657                 perf_evsel__output_resort_cb(pos, &prog,
 658                                              hists__resort_cb, rep);
 659         }
 660
 661         ui_progress__finish();
 662 }
 663
 664 static void stats_setup(struct report *rep)
 665 {
 666         memset(&rep->tool, 0, sizeof(rep->tool));
 667         rep->tool.no_warn = true;
 668 }
 669
 670 static int stats_print(struct report *rep)
 671 {
 672         struct perf_session *session = rep->session;
 673
 674         perf_session__fprintf_nr_events(session, stdout);
 675         return 0;
 676 }
 677
 678 static void tasks_setup(struct report *rep)
 679 {
 680         memset(&rep->tool, 0, sizeof(rep->tool));
 681         rep->tool.ordered_events = true;
 682         if (rep->mmaps_mode) {
 683                 rep->tool.mmap = perf_event__process_mmap;
 684                 rep->tool.mmap2 = perf_event__process_mmap2;
 685         }
 686         rep->tool.comm = perf_event__process_comm;
 687         rep->tool.exit = perf_event__process_exit;
 688         rep->tool.fork = perf_event__process_fork;
 689         rep->tool.no_warn = true;
 690 }
 691
 692 struct task {
 693         struct thread           *thread;
 694         struct list_head         list;
 695         struct list_head         children;
 696 };
 697
 698 static struct task *tasks_list(struct task *task, struct machine *machine)
 699 {
 700         struct thread *parent_thread, *thread = task->thread;
 701         struct task   *parent_task;
 702
 703         /* Already listed. */
 704         if (!list_empty(&task->list))
 705                 return NULL;
 706
 707         /* Last one in the chain. */
 708         if (thread->ppid == -1)
 709                 return task;
 710
 711         parent_thread = machine__find_thread(machine, -1, thread->ppid);
 712         if (!parent_thread)
 713                 return ERR_PTR(-ENOENT);
 714
 715         parent_task = thread__priv(parent_thread);
 716         list_add_tail(&task->list, &parent_task->children);
 717         return tasks_list(parent_task, machine);
 718 }
 719
 720 static size_t maps__fprintf_task(struct maps *maps, int indent, FILE *fp)
 721 {
 722         size_t printed = 0;
 723         struct rb_node *nd;
 724
 725         for (nd = rb_first(&maps->entries); nd; nd = rb_next(nd)) {
 726                 struct map *map = rb_entry(nd, struct map, rb_node);
 727
 728                 printed += fprintf(fp, "%*s  %" PRIx64 "-%" PRIx64 " %c%c%c%c %08" PRIx64 " %" PRIu64 " %s\n",
 729                                    indent, "", map->start, map->end,
 730                                    map->prot & PROT_READ ? 'r' : '-',
 731                                    map->prot & PROT_WRITE ? 'w' : '-',
 732                                    map->prot & PROT_EXEC ? 'x' : '-',
 733                                    map->flags & MAP_SHARED ? 's' : 'p',
 734                                    map->pgoff,
 735                                    map->ino, map->dso->name);
 736         }
 737
 738         return printed;
 739 }
 740
 741 static int map_groups__fprintf_task(struct map_groups *mg, int indent, FILE *fp)
 742 {
 743         return maps__fprintf_task(&mg->maps, indent, fp);
 744 }
 745
 746 static void task__print_level(struct task *task, FILE *fp, int level)
 747 {
 748         struct thread *thread = task->thread;
 749         struct task *child;
 750         int comm_indent = fprintf(fp, "  %8d %8d %8d |%*s",
 751                                   thread->pid_, thread->tid, thread->ppid,
 752                                   level, "");
 753
 754         fprintf(fp, "%s\n", thread__comm_str(thread));
 755
 756         map_groups__fprintf_task(thread->mg, comm_indent, fp);
 757
 758         if (!list_empty(&task->children)) {
 759                 list_for_each_entry(child, &task->children, list)
 760                         task__print_level(child, fp, level + 1);
 761         }
 762 }
 763
 764 static int tasks_print(struct report *rep, FILE *fp)
 765 {
 766         struct perf_session *session = rep->session;
 767         struct machine      *machine = &session->machines.host;
 768         struct task *tasks, *task;
 769         unsigned int nr = 0, itask = 0, i;
 770         struct rb_node *nd;
 771         LIST_HEAD(list);
 772
 773         /*
 774          * No locking needed while accessing machine->threads,
 775          * because --tasks is single threaded command.
 776          */
 777
 778         /* Count all the threads. */
 779         for (i = 0; i < THREADS__TABLE_SIZE; i++)
 780                 nr += machine->threads[i].nr;
 781
 782         tasks = malloc(sizeof(*tasks) * nr);
 783         if (!tasks)
 784                 return -ENOMEM;
 785
 786         for (i = 0; i < THREADS__TABLE_SIZE; i++) {
 787                 struct threads *threads = &machine->threads[i];
 788
 789                 for (nd = rb_first_cached(&threads->entries); nd;
 790                      nd = rb_next(nd)) {
 791                         task = tasks + itask++;
 792
 793                         task->thread = rb_entry(nd, struct thread, rb_node);
 794                         INIT_LIST_HEAD(&task->children);
 795                         INIT_LIST_HEAD(&task->list);
 796                         thread__set_priv(task->thread, task);
 797                 }
 798         }
 799
 800         /*
 801          * Iterate every task down to the unprocessed parent
 802          * and link all in task children list. Task with no
 803          * parent is added into 'list'.
 804          */
 805         for (itask = 0; itask < nr; itask++) {
 806                 task = tasks + itask;
 807
 808                 if (!list_empty(&task->list))
 809                         continue;
 810
 811                 task = tasks_list(task, machine);
 812                 if (IS_ERR(task)) {
 813                         pr_err("Error: failed to process tasks\n");
 814                         free(tasks);
 815                         return PTR_ERR(task);
 816                 }
 817
 818                 if (task)
 819                         list_add_tail(&task->list, &list);
 820         }
 821
 822         fprintf(fp, "# %8s %8s %8s  %s\n", "pid", "tid", "ppid", "comm");
 823
 824         list_for_each_entry(task, &list, list)
 825                 task__print_level(task, fp, 0);
 826
 827         free(tasks);
 828         return 0;
 829 }
 830
 831 static int __cmd_report(struct report *rep)
 832 {
 833         int ret;
 834         struct perf_session *session = rep->session;
 835         struct evsel *pos;
 836         struct perf_data *data = session->data;
 837
 838         signal(SIGINT, sig_handler);
 839
 840         if (rep->cpu_list) {
 841                 ret = perf_session__cpu_bitmap(session, rep->cpu_list,
 842                                                rep->cpu_bitmap);
 843                 if (ret) {
 844                         ui__error("failed to set cpu bitmap\n");
 845                         return ret;
 846                 }
 847                 session->itrace_synth_opts->cpu_bitmap = rep->cpu_bitmap;
 848         }
 849
 850         if (rep->show_threads) {
 851                 ret = perf_read_values_init(&rep->show_threads_values);
 852                 if (ret)
 853                         return ret;
 854         }
 855
 856         ret = report__setup_sample_type(rep);
 857         if (ret) {
 858                 /* report__setup_sample_type() already showed error message */
 859                 return ret;
 860         }
 861
 862         if (rep->stats_mode)
 863                 stats_setup(rep);
 864
 865         if (rep->tasks_mode)
 866                 tasks_setup(rep);
 867
 868         ret = perf_session__process_events(session);
 869         if (ret) {
 870                 ui__error("failed to process sample\n");
 871                 return ret;
 872         }
 873
 874         if (rep->stats_mode)
 875                 return stats_print(rep);
 876
 877         if (rep->tasks_mode)
 878                 return tasks_print(rep, stdout);
 879
 880         report__warn_kptr_restrict(rep);
 881
 882         evlist__for_each_entry(session->evlist, pos)
 883                 rep->nr_entries += evsel__hists(pos)->nr_entries;
 884
 885         if (use_browser == 0) {
 886                 if (verbose > 3)
 887                         perf_session__fprintf(session, stdout);
 888
 889                 if (verbose > 2)
 890                         perf_session__fprintf_dsos(session, stdout);
 891
 892                 if (dump_trace) {
 893                         perf_session__fprintf_nr_events(session, stdout);
 894                         perf_evlist__fprintf_nr_events(session->evlist, stdout);
 895                         return 0;
 896                 }
 897         }
 898
 899         ret = report__collapse_hists(rep);
 900         if (ret) {
 901                 ui__error("failed to process hist entry\n");
 902                 return ret;
 903         }
 904
 905         if (session_done())
 906                 return 0;
 907
 908         /*
 909          * recalculate number of entries after collapsing since it
 910          * might be changed during the collapse phase.
 911          */
 912         rep->nr_entries = 0;
 913         evlist__for_each_entry(session->evlist, pos)
 914                 rep->nr_entries += evsel__hists(pos)->nr_entries;
 915
 916         if (rep->nr_entries == 0) {
 917                 ui__error("The %s data has no samples!\n", data->path);
 918                 return 0;
 919         }
 920
 921         report__output_resort(rep);
 922
 923         return report__browse_hists(rep);
 924 }
 925
 926 static int
 927 report_parse_callchain_opt(const struct option *opt, const char *arg, int unset)
 928 {
 929         struct callchain_param *callchain = opt->value;
 930
 931         callchain->enabled = !unset;
 932         /*
 933          * --no-call-graph
 934          */
 935         if (unset) {
 936                 symbol_conf.use_callchain = false;
 937                 callchain->mode = CHAIN_NONE;
 938                 return 0;
 939         }
 940
 941         return parse_callchain_report_opt(arg);
 942 }
 943
 944 static int
 945 parse_time_quantum(const struct option *opt, const char *arg,
 946                    int unset __maybe_unused)
 947 {
 948         unsigned long *time_q = opt->value;
 949         char *end;
 950
 951         *time_q = strtoul(arg, &end, 0);
 952         if (end == arg)
 953                 goto parse_err;
 954         if (*time_q == 0) {
 955                 pr_err("time quantum cannot be 0");
 956                 return -1;
 957         }
 958         end = skip_spaces(end);
 959         if (*end == 0)
 960                 return 0;
 961         if (!strcmp(end, "s")) {
 962                 *time_q *= NSEC_PER_SEC;
 963                 return 0;
 964         }
 965         if (!strcmp(end, "ms")) {
 966                 *time_q *= NSEC_PER_MSEC;
 967                 return 0;
 968         }
 969         if (!strcmp(end, "us")) {
 970                 *time_q *= NSEC_PER_USEC;
 971                 return 0;
 972         }
 973         if (!strcmp(end, "ns"))
 974                 return 0;
 975 parse_err:
 976         pr_err("Cannot parse time quantum `%s'\n", arg);
 977         return -1;
 978 }
 979
 980 int
 981 report_parse_ignore_callees_opt(const struct option *opt __maybe_unused,
 982                                 const char *arg, int unset __maybe_unused)
 983 {
 984         if (arg) {
 985                 int err = regcomp(&ignore_callees_regex, arg, REG_EXTENDED);
 986                 if (err) {
 987                         char buf[BUFSIZ];
 988                         regerror(err, &ignore_callees_regex, buf, sizeof(buf));
 989                         pr_err("Invalid --ignore-callees regex: %s\n%s", arg, buf);
 990                         return -1;
 991                 }
 992                 have_ignore_callees = 1;
 993         }
 994
 995         return 0;
 996 }
 997
 998 static int
 999 parse_branch_mode(const struct option *opt,
1000                   const char *str __maybe_unused, int unset)
1001 {
1002         int *branch_mode = opt->value;
1003
1004         *branch_mode = !unset;
1005         return 0;
1006 }
1007
1008 static int
1009 parse_percent_limit(const struct option *opt, const char *str,
1010                     int unset __maybe_unused)
1011 {
1012         struct report *rep = opt->value;
1013         double pcnt = strtof(str, NULL);
1014
1015         rep->min_percent = pcnt;
1016         callchain_param.min_percent = pcnt;
1017         return 0;
1018 }
1019
1020 int cmd_report(int argc, const char **argv)
1021 {
1022         struct perf_session *session;
1023         struct itrace_synth_opts itrace_synth_opts = { .set = 0, };
1024         struct stat st;
1025         bool has_br_stack = false;
1026         int branch_mode = -1;
1027         bool branch_call_mode = false;
1028 #define CALLCHAIN_DEFAULT_OPT  "graph,0.5,caller,function,percent"
1029         static const char report_callchain_help[] = "Display call graph (stack chain/backtrace):\n\n"
1030                                                     CALLCHAIN_REPORT_HELP
1031                                                     "\n\t\t\t\tDefault: " CALLCHAIN_DEFAULT_OPT;
1032         char callchain_default_opt[] = CALLCHAIN_DEFAULT_OPT;
1033         const char * const report_usage[] = {
1034                 "perf report [<options>]",
1035                 NULL
1036         };
1037         struct report report = {
1038                 .tool = {
1039                         .sample          = process_sample_event,
1040                         .mmap            = perf_event__process_mmap,
1041                         .mmap2           = perf_event__process_mmap2,
1042                         .comm            = perf_event__process_comm,
1043                         .namespaces      = perf_event__process_namespaces,
1044                         .exit            = perf_event__process_exit,
1045                         .fork            = perf_event__process_fork,
1046                         .lost            = perf_event__process_lost,
1047                         .read            = process_read_event,
1048                         .attr            = perf_event__process_attr,
1049                         .tracing_data    = perf_event__process_tracing_data,
1050                         .build_id        = perf_event__process_build_id,
1051                         .id_index        = perf_event__process_id_index,
1052                         .auxtrace_info   = perf_event__process_auxtrace_info,
1053                         .auxtrace        = perf_event__process_auxtrace,
1054                         .event_update    = perf_event__process_event_update,
1055                         .feature         = process_feature_event,
1056                         .ordered_events  = true,
1057                         .ordering_requires_timestamps = true,
1058                 },
1059                 .max_stack               = PERF_MAX_STACK_DEPTH,
1060                 .pretty_printing_style   = "normal",
1061                 .socket_filter           = -1,
1062                 .annotation_opts         = annotation__default_options,
1063         };
1064         const struct option options[] = {
1065         OPT_STRING('i', "input", &input_name, "file",
1066                     "input file name"),
1067         OPT_INCR('v', "verbose", &verbose,
1068                     "be more verbose (show symbol address, etc)"),
1069         OPT_BOOLEAN('q', "quiet", &quiet, "Do not show any message"),
1070         OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
1071                     "dump raw trace in ASCII"),
1072         OPT_BOOLEAN(0, "stats", &report.stats_mode, "Display event stats"),
1073         OPT_BOOLEAN(0, "tasks", &report.tasks_mode, "Display recorded tasks"),
1074         OPT_BOOLEAN(0, "mmaps", &report.mmaps_mode, "Display recorded tasks memory maps"),
1075         OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
1076                    "file", "vmlinux pathname"),
1077         OPT_BOOLEAN(0, "ignore-vmlinux", &symbol_conf.ignore_vmlinux,
1078                     "don't load vmlinux even if found"),
1079         OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name,
1080                    "file", "kallsyms pathname"),
1081         OPT_BOOLEAN('f', "force", &symbol_conf.force, "don't complain, do it"),
1082         OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
1083                     "load module symbols - WARNING: use only with -k and LIVE kernel"),
1084         OPT_BOOLEAN('n', "show-nr-samples", &symbol_conf.show_nr_samples,
1085                     "Show a column with the number of samples"),
1086         OPT_BOOLEAN('T', "threads", &report.show_threads,
1087                     "Show per-thread event counters"),
1088         OPT_STRING(0, "pretty", &report.pretty_printing_style, "key",
1089                    "pretty printing style key: normal raw"),
1090         OPT_BOOLEAN(0, "tui", &report.use_tui, "Use the TUI interface"),
1091         OPT_BOOLEAN(0, "gtk", &report.use_gtk, "Use the GTK2 interface"),
1092         OPT_BOOLEAN(0, "stdio", &report.use_stdio,
1093                     "Use the stdio interface"),
1094         OPT_BOOLEAN(0, "header", &report.header, "Show data header."),
1095         OPT_BOOLEAN(0, "header-only", &report.header_only,
1096                     "Show only data header."),
1097         OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
1098                    sort_help("sort by key(s):")),
1099         OPT_STRING('F', "fields", &field_order, "key[,keys...]",
1100                    sort_help("output field(s): overhead period sample ")),
1101         OPT_BOOLEAN(0, "show-cpu-utilization", &symbol_conf.show_cpu_utilization,
1102                     "Show sample percentage for different cpu modes"),
1103         OPT_BOOLEAN_FLAG(0, "showcpuutilization", &symbol_conf.show_cpu_utilization,
1104                     "Show sample percentage for different cpu modes", PARSE_OPT_HIDDEN),
1105         OPT_STRING('p', "parent", &parent_pattern, "regex",
1106                    "regex filter to identify parent, see: '--sort parent'"),
1107         OPT_BOOLEAN('x', "exclude-other", &symbol_conf.exclude_other,
1108                     "Only display entries with parent-match"),
1109         OPT_CALLBACK_DEFAULT('g', "call-graph", &callchain_param,
1110                              "print_type,threshold[,print_limit],order,sort_key[,branch],value",
1111                              report_callchain_help, &report_parse_callchain_opt,
1112                              callchain_default_opt),
1113         OPT_BOOLEAN(0, "children", &symbol_conf.cumulate_callchain,
1114                     "Accumulate callchains of children and show total overhead as well"),
1115         OPT_INTEGER(0, "max-stack", &report.max_stack,
1116                     "Set the maximum stack depth when parsing the callchain, "
1117                     "anything beyond the specified depth will be ignored. "
1118                     "Default: kernel.perf_event_max_stack or " __stringify(PERF_MAX_STACK_DEPTH)),
1119         OPT_BOOLEAN('G', "inverted", &report.inverted_callchain,
1120                     "alias for inverted call graph"),
1121         OPT_CALLBACK(0, "ignore-callees", NULL, "regex",
1122                    "ignore callees of these functions in call graphs",
1123                    report_parse_ignore_callees_opt),
1124         OPT_STRING('d', "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
1125                    "only consider symbols in these dsos"),
1126         OPT_STRING('c', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
1127                    "only consider symbols in these comms"),
1128         OPT_STRING(0, "pid", &symbol_conf.pid_list_str, "pid[,pid...]",
1129                    "only consider symbols in these pids"),
1130         OPT_STRING(0, "tid", &symbol_conf.tid_list_str, "tid[,tid...]",
1131                    "only consider symbols in these tids"),
1132         OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
1133                    "only consider these symbols"),
1134         OPT_STRING(0, "symbol-filter", &report.symbol_filter_str, "filter",
1135                    "only show symbols that (partially) match with this filter"),
1136         OPT_STRING('w', "column-widths", &symbol_conf.col_width_list_str,
1137                    "width[,width...]",
1138                    "don't try to adjust column width, use these fixed values"),
1139         OPT_STRING_NOEMPTY('t', "field-separator", &symbol_conf.field_sep, "separator",
1140                    "separator for columns, no spaces will be added between "
1141                    "columns '.' is reserved."),
1142         OPT_BOOLEAN('U', "hide-unresolved", &symbol_conf.hide_unresolved,
1143                     "Only display entries resolved to a symbol"),
1144         OPT_CALLBACK(0, "symfs", NULL, "directory",
1145                      "Look for files with symbols relative to this directory",
1146                      symbol__config_symfs),
1147         OPT_STRING('C', "cpu", &report.cpu_list, "cpu",
1148                    "list of cpus to profile"),
1149         OPT_BOOLEAN('I', "show-info", &report.show_full_info,
1150                     "Display extended information about perf.data file"),
1151         OPT_BOOLEAN(0, "source", &report.annotation_opts.annotate_src,
1152                     "Interleave source code with assembly code (default)"),
1153         OPT_BOOLEAN(0, "asm-raw", &report.annotation_opts.show_asm_raw,
1154                     "Display raw encoding of assembly instructions (default)"),
1155         OPT_STRING('M', "disassembler-style", &report.annotation_opts.disassembler_style, "disassembler style",
1156                    "Specify disassembler style (e.g. -M intel for intel syntax)"),
1157         OPT_BOOLEAN(0, "show-total-period", &symbol_conf.show_total_period,
1158                     "Show a column with the sum of periods"),
1159         OPT_BOOLEAN_SET(0, "group", &symbol_conf.event_group, &report.group_set,
1160                     "Show event group information together"),
1161         OPT_CALLBACK_NOOPT('b', "branch-stack", &branch_mode, "",
1162                     "use branch records for per branch histogram filling",
1163                     parse_branch_mode),
1164         OPT_BOOLEAN(0, "branch-history", &branch_call_mode,
1165                     "add last branch records to call history"),
1166         OPT_STRING(0, "objdump", &report.annotation_opts.objdump_path, "path",
1167                    "objdump binary to use for disassembly and annotations"),
1168         OPT_BOOLEAN(0, "demangle", &symbol_conf.demangle,
1169                     "Disable symbol demangling"),
1170         OPT_BOOLEAN(0, "demangle-kernel", &symbol_conf.demangle_kernel,
1171                     "Enable kernel symbol demangling"),
1172         OPT_BOOLEAN(0, "mem-mode", &report.mem_mode, "mem access profile"),
1173         OPT_INTEGER(0, "samples", &symbol_conf.res_sample,
1174                     "Number of samples to save per histogram entry for individual browsing"),
1175         OPT_CALLBACK(0, "percent-limit", &report, "percent",
1176                      "Don't show entries under that percent", parse_percent_limit),
1177         OPT_CALLBACK(0, "percentage", NULL, "relative|absolute",
1178                      "how to display percentage of filtered entries", parse_filter_percentage),
1179         OPT_CALLBACK_OPTARG(0, "itrace", &itrace_synth_opts, NULL, "opts",
1180                             "Instruction Tracing options\n" ITRACE_HELP,
1181                             itrace_parse_synth_opts),
1182         OPT_BOOLEAN(0, "full-source-path", &srcline_full_filename,
1183                         "Show full source file name path for source lines"),
1184         OPT_BOOLEAN(0, "show-ref-call-graph", &symbol_conf.show_ref_callgraph,
1185                     "Show callgraph from reference event"),
1186         OPT_INTEGER(0, "socket-filter", &report.socket_filter,
1187                     "only show processor socket that match with this filter"),
1188         OPT_BOOLEAN(0, "raw-trace", &symbol_conf.raw_trace,
1189                     "Show raw trace event output (do not use print fmt or plugins)"),
1190         OPT_BOOLEAN(0, "hierarchy", &symbol_conf.report_hierarchy,
1191                     "Show entries in a hierarchy"),
1192         OPT_CALLBACK_DEFAULT(0, "stdio-color", NULL, "mode",
1193                              "'always' (default), 'never' or 'auto' only applicable to --stdio mode",
1194                              stdio__config_color, "always"),
1195         OPT_STRING(0, "time", &report.time_str, "str",
1196                    "Time span of interest (start,stop)"),
1197         OPT_BOOLEAN(0, "inline", &symbol_conf.inline_name,
1198                     "Show inline function"),
1199         OPT_CALLBACK(0, "percent-type", &report.annotation_opts, "local-period",
1200                      "Set percent type local/global-period/hits",
1201                      annotate_parse_percent_type),
1202         OPT_BOOLEAN(0, "ns", &symbol_conf.nanosecs, "Show times in nanosecs"),
1203         OPT_CALLBACK(0, "time-quantum", &symbol_conf.time_quantum, "time (ms|us|ns|s)",
1204                      "Set time quantum for time sort key (default 100ms)",
1205                      parse_time_quantum),
1206         OPTS_EVSWITCH(&report.evswitch),
1207         OPT_END()
1208         };
1209         struct perf_data data = {
1210                 .mode  = PERF_DATA_MODE_READ,
1211         };
1212         int ret = hists__init();
1213         char sort_tmp[128];
1214
1215         if (ret < 0)
1216                 return ret;
1217
1218         ret = perf_config(report__config, &report);
1219         if (ret)
1220                 return ret;
1221
1222         argc = parse_options(argc, argv, options, report_usage, 0);
1223         if (argc) {
1224                 /*
1225                  * Special case: if there's an argument left then assume that
1226                  * it's a symbol filter:
1227                  */
1228                 if (argc > 1)
1229                         usage_with_options(report_usage, options);
1230
1231                 report.symbol_filter_str = argv[0];
1232         }
1233
1234         if (report.mmaps_mode)
1235                 report.tasks_mode = true;
1236
1237         if (quiet)
1238                 perf_quiet_option();
1239
1240         if (symbol_conf.vmlinux_name &&
1241             access(symbol_conf.vmlinux_name, R_OK)) {
1242                 pr_err("Invalid file: %s\n", symbol_conf.vmlinux_name);
1243                 return -EINVAL;
1244         }
1245         if (symbol_conf.kallsyms_name &&
1246             access(symbol_conf.kallsyms_name, R_OK)) {
1247                 pr_err("Invalid file: %s\n", symbol_conf.kallsyms_name);
1248                 return -EINVAL;
1249         }
1250
1251         if (report.inverted_callchain)
1252                 callchain_param.order = ORDER_CALLER;
1253         if (symbol_conf.cumulate_callchain && !callchain_param.order_set)
1254                 callchain_param.order = ORDER_CALLER;
1255
1256         if (itrace_synth_opts.callchain &&
1257             (int)itrace_synth_opts.callchain_sz > report.max_stack)
1258                 report.max_stack = itrace_synth_opts.callchain_sz;
1259
1260         if (!input_name || !strlen(input_name)) {
1261                 if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
1262                         input_name = "-";
1263                 else
1264                         input_name = "perf.data";
1265         }
1266
1267         data.path  = input_name;
1268         data.force = symbol_conf.force;
1269
1270 repeat:
1271         session = perf_session__new(&data, false, &report.tool);
1272         if (session == NULL)
1273                 return -1;
1274
1275         ret = evswitch__init(&report.evswitch, session->evlist, stderr);
1276         if (ret)
1277                 return ret;
1278
1279         if (zstd_init(&(session->zstd_data), 0) < 0)
1280                 pr_warning("Decompression initialization failed. Reported data may be incomplete.\n");
1281
1282         if (report.queue_size) {
1283                 ordered_events__set_alloc_size(&session->ordered_events,
1284                                                report.queue_size);
1285         }
1286
1287         session->itrace_synth_opts = &itrace_synth_opts;
1288
1289         report.session = session;
1290
1291         has_br_stack = perf_header__has_feat(&session->header,
1292                                              HEADER_BRANCH_STACK);
1293         if (perf_evlist__combined_sample_type(session->evlist) & PERF_SAMPLE_STACK_USER)
1294                 has_br_stack = false;
1295
1296         setup_forced_leader(&report, session->evlist);
1297
1298         if (itrace_synth_opts.last_branch)
1299                 has_br_stack = true;
1300
1301         if (has_br_stack && branch_call_mode)
1302                 symbol_conf.show_branchflag_count = true;
1303
1304         memset(&report.brtype_stat, 0, sizeof(struct branch_type_stat));
1305
1306         /*
1307          * Branch mode is a tristate:
1308          * -1 means default, so decide based on the file having branch data.
1309          * 0/1 means the user chose a mode.
1310          */
1311         if (((branch_mode == -1 && has_br_stack) || branch_mode == 1) &&
1312             !branch_call_mode) {
1313                 sort__mode = SORT_MODE__BRANCH;
1314                 symbol_conf.cumulate_callchain = false;
1315         }
1316         if (branch_call_mode) {
1317                 callchain_param.key = CCKEY_ADDRESS;
1318                 callchain_param.branch_callstack = 1;
1319                 symbol_conf.use_callchain = true;
1320                 callchain_register_param(&callchain_param);
1321                 if (sort_order == NULL)
1322                         sort_order = "srcline,symbol,dso";
1323         }
1324
1325         if (report.mem_mode) {
1326                 if (sort__mode == SORT_MODE__BRANCH) {
1327                         pr_err("branch and mem mode incompatible\n");
1328                         goto error;
1329                 }
1330                 sort__mode = SORT_MODE__MEMORY;
1331                 symbol_conf.cumulate_callchain = false;
1332         }
1333
1334         if (symbol_conf.report_hierarchy) {
1335                 /* disable incompatible options */
1336                 symbol_conf.cumulate_callchain = false;
1337
1338                 if (field_order) {
1339                         pr_err("Error: --hierarchy and --fields options cannot be used together\n");
1340                         parse_options_usage(report_usage, options, "F", 1);
1341                         parse_options_usage(NULL, options, "hierarchy", 0);
1342                         goto error;
1343                 }
1344
1345                 perf_hpp_list.need_collapse = true;
1346         }
1347
1348         if (report.use_stdio)
1349                 use_browser = 0;
1350         else if (report.use_tui)
1351                 use_browser = 1;
1352         else if (report.use_gtk)
1353                 use_browser = 2;
1354
1355         /* Force tty output for header output and per-thread stat. */
1356         if (report.header || report.header_only || report.show_threads)
1357                 use_browser = 0;
1358         if (report.header || report.header_only)
1359                 report.tool.show_feat_hdr = SHOW_FEAT_HEADER;
1360         if (report.show_full_info)
1361                 report.tool.show_feat_hdr = SHOW_FEAT_HEADER_FULL_INFO;
1362         if (report.stats_mode || report.tasks_mode)
1363                 use_browser = 0;
1364         if (report.stats_mode && report.tasks_mode) {
1365                 pr_err("Error: --tasks and --mmaps can't be used together with --stats\n");
1366                 goto error;
1367         }
1368
1369         if (strcmp(input_name, "-") != 0)
1370                 setup_browser(true);
1371         else
1372                 use_browser = 0;
1373
1374         if (sort_order && strstr(sort_order, "ipc")) {
1375                 parse_options_usage(report_usage, options, "s", 1);
1376                 goto error;
1377         }
1378
1379         if (sort_order && strstr(sort_order, "symbol")) {
1380                 if (sort__mode == SORT_MODE__BRANCH) {
1381                         snprintf(sort_tmp, sizeof(sort_tmp), "%s,%s",
1382                                  sort_order, "ipc_lbr");
1383                         report.symbol_ipc = true;
1384                 } else {
1385                         snprintf(sort_tmp, sizeof(sort_tmp), "%s,%s",
1386                                  sort_order, "ipc_null");
1387                 }
1388
1389                 sort_order = sort_tmp;
1390         }
1391
1392         if (setup_sorting(session->evlist) < 0) {
1393                 if (sort_order)
1394                         parse_options_usage(report_usage, options, "s", 1);
1395                 if (field_order)
1396                         parse_options_usage(sort_order ? NULL : report_usage,
1397                                             options, "F", 1);
1398                 goto error;
1399         }
1400
1401         if ((report.header || report.header_only) && !quiet) {
1402                 perf_session__fprintf_info(session, stdout,
1403                                            report.show_full_info);
1404                 if (report.header_only) {
1405                         ret = 0;
1406                         goto error;
1407                 }
1408         } else if (use_browser == 0 && !quiet &&
1409                    !report.stats_mode && !report.tasks_mode) {
1410                 fputs("# To display the perf.data header info, please use --header/--header-only options.\n#\n",
1411                       stdout);
1412         }
1413
1414         /*
1415          * Only in the TUI browser we are doing integrated annotation,
1416          * so don't allocate extra space that won't be used in the stdio
1417          * implementation.
1418          */
1419         if (ui__has_annotation() || report.symbol_ipc) {
1420                 ret = symbol__annotation_init();
1421                 if (ret < 0)
1422                         goto error;
1423                 /*
1424                  * For searching by name on the "Browse map details".
1425                  * providing it only in verbose mode not to bloat too
1426                  * much struct symbol.
1427                  */
1428                 if (verbose > 0) {
1429                         /*
1430                          * XXX: Need to provide a less kludgy way to ask for
1431                          * more space per symbol, the u32 is for the index on
1432                          * the ui browser.
1433                          * See symbol__browser_index.
1434                          */
1435                         symbol_conf.priv_size += sizeof(u32);
1436                         symbol_conf.sort_by_name = true;
1437                 }
1438                 annotation_config__init();
1439         }
1440
1441         if (symbol__init(&session->header.env) < 0)
1442                 goto error;
1443
1444         if (report.time_str) {
1445                 ret = perf_time__parse_for_ranges(report.time_str, session,
1446                                                   &report.ptime_range,
1447                                                   &report.range_size,
1448                                                   &report.range_num);
1449                 if (ret < 0)
1450                         goto error;
1451
1452                 itrace_synth_opts__set_time_range(&itrace_synth_opts,
1453                                                   report.ptime_range,
1454                                                   report.range_num);
1455         }
1456
1457         if (session->tevent.pevent &&
1458             tep_set_function_resolver(session->tevent.pevent,
1459                                       machine__resolve_kernel_addr,
1460                                       &session->machines.host) < 0) {
1461                 pr_err("%s: failed to set libtraceevent function resolver\n",
1462                        __func__);
1463                 return -1;
1464         }
1465
1466         sort__setup_elide(stdout);
1467
1468         ret = __cmd_report(&report);
1469         if (ret == K_SWITCH_INPUT_DATA) {
1470                 perf_session__delete(session);
1471                 goto repeat;
1472         } else
1473                 ret = 0;
1474
1475 error:
1476         if (report.ptime_range) {
1477                 itrace_synth_opts__clear_time_range(&itrace_synth_opts);
1478                 zfree(&report.ptime_range);
1479         }
1480         zstd_fini(&(session->zstd_data));
1481         perf_session__delete(session);
1482         return ret;
1483 }