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" // perf_tip()
  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 = he->branch_info;
 185         struct perf_sample *sample = iter->sample;
 186         struct evsel *evsel = iter->evsel;
 187         int err;
 188
 189         branch_type_count(&rep->brtype_stat, &bi->flags,
 190                           bi->from.addr, bi->to.addr);
 191
 192         if (!ui__has_annotation() && !rep->symbol_ipc)
 193                 return 0;
 194
 195         err = addr_map_symbol__inc_samples(&bi->from, sample, evsel);
 196         if (err)
 197                 goto out;
 198
 199         err = addr_map_symbol__inc_samples(&bi->to, sample, evsel);
 200
 201 out:
 202         return err;
 203 }
 204
 205 static void setup_forced_leader(struct report *report,
 206                                 struct evlist *evlist)
 207 {
 208         if (report->group_set)
 209                 perf_evlist__force_leader(evlist);
 210 }
 211
 212 static int process_feature_event(struct perf_session *session,
 213                                  union perf_event *event)
 214 {
 215         struct report *rep = container_of(session->tool, struct report, tool);
 216
 217         if (event->feat.feat_id < HEADER_LAST_FEATURE)
 218                 return perf_event__process_feature(session, event);
 219
 220         if (event->feat.feat_id != HEADER_LAST_FEATURE) {
 221                 pr_err("failed: wrong feature ID: %" PRI_lu64 "\n",
 222                        event->feat.feat_id);
 223                 return -1;
 224         }
 225
 226         /*
 227          * (feat_id = HEADER_LAST_FEATURE) is the end marker which
 228          * means all features are received, now we can force the
 229          * group if needed.
 230          */
 231         setup_forced_leader(rep, session->evlist);
 232         return 0;
 233 }
 234
 235 static int process_sample_event(struct perf_tool *tool,
 236                                 union perf_event *event,
 237                                 struct perf_sample *sample,
 238                                 struct evsel *evsel,
 239                                 struct machine *machine)
 240 {
 241         struct report *rep = container_of(tool, struct report, tool);
 242         struct addr_location al;
 243         struct hist_entry_iter iter = {
 244                 .evsel                  = evsel,
 245                 .sample                 = sample,
 246                 .hide_unresolved        = symbol_conf.hide_unresolved,
 247                 .add_entry_cb           = hist_iter__report_callback,
 248         };
 249         int ret = 0;
 250
 251         if (perf_time__ranges_skip_sample(rep->ptime_range, rep->range_num,
 252                                           sample->time)) {
 253                 return 0;
 254         }
 255
 256         if (evswitch__discard(&rep->evswitch, evsel))
 257                 return 0;
 258
 259         if (machine__resolve(machine, &al, sample) < 0) {
 260                 pr_debug("problem processing %d event, skipping it.\n",
 261                          event->header.type);
 262                 return -1;
 263         }
 264
 265         if (symbol_conf.hide_unresolved && al.sym == NULL)
 266                 goto out_put;
 267
 268         if (rep->cpu_list && !test_bit(sample->cpu, rep->cpu_bitmap))
 269                 goto out_put;
 270
 271         if (sort__mode == SORT_MODE__BRANCH) {
 272                 /*
 273                  * A non-synthesized event might not have a branch stack if
 274                  * branch stacks have been synthesized (using itrace options).
 275                  */
 276                 if (!sample->branch_stack)
 277                         goto out_put;
 278
 279                 iter.add_entry_cb = hist_iter__branch_callback;
 280                 iter.ops = &hist_iter_branch;
 281         } else if (rep->mem_mode) {
 282                 iter.ops = &hist_iter_mem;
 283         } else if (symbol_conf.cumulate_callchain) {
 284                 iter.ops = &hist_iter_cumulative;
 285         } else {
 286                 iter.ops = &hist_iter_normal;
 287         }
 288
 289         if (al.map != NULL)
 290                 al.map->dso->hit = 1;
 291
 292         if (ui__has_annotation() || rep->symbol_ipc) {
 293                 hist__account_cycles(sample->branch_stack, &al, sample,
 294                                      rep->nonany_branch_mode);
 295         }
 296
 297         ret = hist_entry_iter__add(&iter, &al, rep->max_stack, rep);
 298         if (ret < 0)
 299                 pr_debug("problem adding hist entry, skipping event\n");
 300 out_put:
 301         addr_location__put(&al);
 302         return ret;
 303 }
 304
 305 static int process_read_event(struct perf_tool *tool,
 306                               union perf_event *event,
 307                               struct perf_sample *sample __maybe_unused,
 308                               struct evsel *evsel,
 309                               struct machine *machine __maybe_unused)
 310 {
 311         struct report *rep = container_of(tool, struct report, tool);
 312
 313         if (rep->show_threads) {
 314                 const char *name = perf_evsel__name(evsel);
 315                 int err = perf_read_values_add_value(&rep->show_threads_values,
 316                                            event->read.pid, event->read.tid,
 317                                            evsel->idx,
 318                                            name,
 319                                            event->read.value);
 320
 321                 if (err)
 322                         return err;
 323         }
 324
 325         return 0;
 326 }
 327
 328 /* For pipe mode, sample_type is not currently set */
 329 static int report__setup_sample_type(struct report *rep)
 330 {
 331         struct perf_session *session = rep->session;
 332         u64 sample_type = perf_evlist__combined_sample_type(session->evlist);
 333         bool is_pipe = perf_data__is_pipe(session->data);
 334
 335         if (session->itrace_synth_opts->callchain ||
 336             (!is_pipe &&
 337              perf_header__has_feat(&session->header, HEADER_AUXTRACE) &&
 338              !session->itrace_synth_opts->set))
 339                 sample_type |= PERF_SAMPLE_CALLCHAIN;
 340
 341         if (session->itrace_synth_opts->last_branch)
 342                 sample_type |= PERF_SAMPLE_BRANCH_STACK;
 343
 344         if (!is_pipe && !(sample_type & PERF_SAMPLE_CALLCHAIN)) {
 345                 if (perf_hpp_list.parent) {
 346                         ui__error("Selected --sort parent, but no "
 347                                     "callchain data. Did you call "
 348                                     "'perf record' without -g?\n");
 349                         return -EINVAL;
 350                 }
 351                 if (symbol_conf.use_callchain &&
 352                         !symbol_conf.show_branchflag_count) {
 353                         ui__error("Selected -g or --branch-history.\n"
 354                                   "But no callchain or branch data.\n"
 355                                   "Did you call 'perf record' without -g or -b?\n");
 356                         return -1;
 357                 }
 358         } else if (!callchain_param.enabled &&
 359                    callchain_param.mode != CHAIN_NONE &&
 360                    !symbol_conf.use_callchain) {
 361                         symbol_conf.use_callchain = true;
 362                         if (callchain_register_param(&callchain_param) < 0) {
 363                                 ui__error("Can't register callchain params.\n");
 364                                 return -EINVAL;
 365                         }
 366         }
 367
 368         if (symbol_conf.cumulate_callchain) {
 369                 /* Silently ignore if callchain is missing */
 370                 if (!(sample_type & PERF_SAMPLE_CALLCHAIN)) {
 371                         symbol_conf.cumulate_callchain = false;
 372                         perf_hpp__cancel_cumulate();
 373                 }
 374         }
 375
 376         if (sort__mode == SORT_MODE__BRANCH) {
 377                 if (!is_pipe &&
 378                     !(sample_type & PERF_SAMPLE_BRANCH_STACK)) {
 379                         ui__error("Selected -b but no branch data. "
 380                                   "Did you call perf record without -b?\n");
 381                         return -1;
 382                 }
 383         }
 384
 385         if (symbol_conf.use_callchain || symbol_conf.cumulate_callchain) {
 386                 if ((sample_type & PERF_SAMPLE_REGS_USER) &&
 387                     (sample_type & PERF_SAMPLE_STACK_USER)) {
 388                         callchain_param.record_mode = CALLCHAIN_DWARF;
 389                         dwarf_callchain_users = true;
 390                 } else if (sample_type & PERF_SAMPLE_BRANCH_STACK)
 391                         callchain_param.record_mode = CALLCHAIN_LBR;
 392                 else
 393                         callchain_param.record_mode = CALLCHAIN_FP;
 394         }
 395
 396         /* ??? handle more cases than just ANY? */
 397         if (!(perf_evlist__combined_branch_type(session->evlist) &
 398                                 PERF_SAMPLE_BRANCH_ANY))
 399                 rep->nonany_branch_mode = true;
 400
 401 #if !defined(HAVE_LIBUNWIND_SUPPORT) && !defined(HAVE_DWARF_SUPPORT)
 402         if (dwarf_callchain_users) {
 403                 ui__warning("Please install libunwind or libdw "
 404                             "development packages during the perf build.\n");
 405         }
 406 #endif
 407
 408         return 0;
 409 }
 410
 411 static void sig_handler(int sig __maybe_unused)
 412 {
 413         session_done = 1;
 414 }
 415
 416 static size_t hists__fprintf_nr_sample_events(struct hists *hists, struct report *rep,
 417                                               const char *evname, FILE *fp)
 418 {
 419         size_t ret;
 420         char unit;
 421         unsigned long nr_samples = hists->stats.nr_events[PERF_RECORD_SAMPLE];
 422         u64 nr_events = hists->stats.total_period;
 423         struct evsel *evsel = hists_to_evsel(hists);
 424         char buf[512];
 425         size_t size = sizeof(buf);
 426         int socked_id = hists->socket_filter;
 427
 428         if (quiet)
 429                 return 0;
 430
 431         if (symbol_conf.filter_relative) {
 432                 nr_samples = hists->stats.nr_non_filtered_samples;
 433                 nr_events = hists->stats.total_non_filtered_period;
 434         }
 435
 436         if (perf_evsel__is_group_event(evsel)) {
 437                 struct evsel *pos;
 438
 439                 perf_evsel__group_desc(evsel, buf, size);
 440                 evname = buf;
 441
 442                 for_each_group_member(pos, evsel) {
 443                         const struct hists *pos_hists = evsel__hists(pos);
 444
 445                         if (symbol_conf.filter_relative) {
 446                                 nr_samples += pos_hists->stats.nr_non_filtered_samples;
 447                                 nr_events += pos_hists->stats.total_non_filtered_period;
 448                         } else {
 449                                 nr_samples += pos_hists->stats.nr_events[PERF_RECORD_SAMPLE];
 450                                 nr_events += pos_hists->stats.total_period;
 451                         }
 452                 }
 453         }
 454
 455         nr_samples = convert_unit(nr_samples, &unit);
 456         ret = fprintf(fp, "# Samples: %lu%c", nr_samples, unit);
 457         if (evname != NULL) {
 458                 ret += fprintf(fp, " of event%s '%s'",
 459                                evsel->core.nr_members > 1 ? "s" : "", evname);
 460         }
 461
 462         if (rep->time_str)
 463                 ret += fprintf(fp, " (time slices: %s)", rep->time_str);
 464
 465         if (symbol_conf.show_ref_callgraph && evname && strstr(evname, "call-graph=no")) {
 466                 ret += fprintf(fp, ", show reference callgraph");
 467         }
 468
 469         if (rep->mem_mode) {
 470                 ret += fprintf(fp, "\n# Total weight : %" PRIu64, nr_events);
 471                 ret += fprintf(fp, "\n# Sort order   : %s", sort_order ? : default_mem_sort_order);
 472         } else
 473                 ret += fprintf(fp, "\n# Event count (approx.): %" PRIu64, nr_events);
 474
 475         if (socked_id > -1)
 476                 ret += fprintf(fp, "\n# Processor Socket: %d", socked_id);
 477
 478         return ret + fprintf(fp, "\n#\n");
 479 }
 480
 481 static int perf_evlist__tty_browse_hists(struct evlist *evlist,
 482                                          struct report *rep,
 483                                          const char *help)
 484 {
 485         struct evsel *pos;
 486
 487         if (!quiet) {
 488                 fprintf(stdout, "#\n# Total Lost Samples: %" PRIu64 "\n#\n",
 489                         evlist->stats.total_lost_samples);
 490         }
 491
 492         evlist__for_each_entry(evlist, pos) {
 493                 struct hists *hists = evsel__hists(pos);
 494                 const char *evname = perf_evsel__name(pos);
 495
 496                 if (symbol_conf.event_group &&
 497                     !perf_evsel__is_group_leader(pos))
 498                         continue;
 499
 500                 hists__fprintf_nr_sample_events(hists, rep, evname, stdout);
 501                 hists__fprintf(hists, !quiet, 0, 0, rep->min_percent, stdout,
 502                                !(symbol_conf.use_callchain ||
 503                                  symbol_conf.show_branchflag_count));
 504                 fprintf(stdout, "\n\n");
 505         }
 506
 507         if (!quiet)
 508                 fprintf(stdout, "#\n# (%s)\n#\n", help);
 509
 510         if (rep->show_threads) {
 511                 bool style = !strcmp(rep->pretty_printing_style, "raw");
 512                 perf_read_values_display(stdout, &rep->show_threads_values,
 513                                          style);
 514                 perf_read_values_destroy(&rep->show_threads_values);
 515         }
 516
 517         if (sort__mode == SORT_MODE__BRANCH)
 518                 branch_type_stat_display(stdout, &rep->brtype_stat);
 519
 520         return 0;
 521 }
 522
 523 static void report__warn_kptr_restrict(const struct report *rep)
 524 {
 525         struct map *kernel_map = machine__kernel_map(&rep->session->machines.host);
 526         struct kmap *kernel_kmap = kernel_map ? map__kmap(kernel_map) : NULL;
 527
 528         if (perf_evlist__exclude_kernel(rep->session->evlist))
 529                 return;
 530
 531         if (kernel_map == NULL ||
 532             (kernel_map->dso->hit &&
 533              (kernel_kmap->ref_reloc_sym == NULL ||
 534               kernel_kmap->ref_reloc_sym->addr == 0))) {
 535                 const char *desc =
 536                     "As no suitable kallsyms nor vmlinux was found, kernel samples\n"
 537                     "can't be resolved.";
 538
 539                 if (kernel_map && map__has_symbols(kernel_map)) {
 540                         desc = "If some relocation was applied (e.g. "
 541                                "kexec) symbols may be misresolved.";
 542                 }
 543
 544                 ui__warning(
 545 "Kernel address maps (/proc/{kallsyms,modules}) were restricted.\n\n"
 546 "Check /proc/sys/kernel/kptr_restrict before running 'perf record'.\n\n%s\n\n"
 547 "Samples in kernel modules can't be resolved as well.\n\n",
 548                 desc);
 549         }
 550 }
 551
 552 static int report__gtk_browse_hists(struct report *rep, const char *help)
 553 {
 554         int (*hist_browser)(struct evlist *evlist, const char *help,
 555                             struct hist_browser_timer *timer, float min_pcnt);
 556
 557         hist_browser = dlsym(perf_gtk_handle, "perf_evlist__gtk_browse_hists");
 558
 559         if (hist_browser == NULL) {
 560                 ui__error("GTK browser not found!\n");
 561                 return -1;
 562         }
 563
 564         return hist_browser(rep->session->evlist, help, NULL, rep->min_percent);
 565 }
 566
 567 static int report__browse_hists(struct report *rep)
 568 {
 569         int ret;
 570         struct perf_session *session = rep->session;
 571         struct evlist *evlist = session->evlist;
 572         char *help = NULL, *path = NULL;
 573
 574         path = system_path(TIPDIR);
 575         if (perf_tip(&help, path) || help == NULL) {
 576                 /* fallback for people who don't install perf ;-) */
 577                 free(path);
 578                 path = system_path(DOCDIR);
 579                 if (perf_tip(&help, path) || help == NULL)
 580                         help = strdup("Cannot load tips.txt file, please install perf!");
 581         }
 582         free(path);
 583
 584         switch (use_browser) {
 585         case 1:
 586                 ret = perf_evlist__tui_browse_hists(evlist, help, NULL,
 587                                                     rep->min_percent,
 588                                                     &session->header.env,
 589                                                     true, &rep->annotation_opts);
 590                 /*
 591                  * Usually "ret" is the last pressed key, and we only
 592                  * care if the key notifies us to switch data file.
 593                  */
 594                 if (ret != K_SWITCH_INPUT_DATA)
 595                         ret = 0;
 596                 break;
 597         case 2:
 598                 ret = report__gtk_browse_hists(rep, help);
 599                 break;
 600         default:
 601                 ret = perf_evlist__tty_browse_hists(evlist, rep, help);
 602                 break;
 603         }
 604         free(help);
 605         return ret;
 606 }
 607
 608 static int report__collapse_hists(struct report *rep)
 609 {
 610         struct ui_progress prog;
 611         struct evsel *pos;
 612         int ret = 0;
 613
 614         ui_progress__init(&prog, rep->nr_entries, "Merging related events...");
 615
 616         evlist__for_each_entry(rep->session->evlist, pos) {
 617                 struct hists *hists = evsel__hists(pos);
 618
 619                 if (pos->idx == 0)
 620                         hists->symbol_filter_str = rep->symbol_filter_str;
 621
 622                 hists->socket_filter = rep->socket_filter;
 623
 624                 ret = hists__collapse_resort(hists, &prog);
 625                 if (ret < 0)
 626                         break;
 627
 628                 /* Non-group events are considered as leader */
 629                 if (symbol_conf.event_group &&
 630                     !perf_evsel__is_group_leader(pos)) {
 631                         struct hists *leader_hists = evsel__hists(pos->leader);
 632
 633                         hists__match(leader_hists, hists);
 634                         hists__link(leader_hists, hists);
 635                 }
 636         }
 637
 638         ui_progress__finish();
 639         return ret;
 640 }
 641
 642 static int hists__resort_cb(struct hist_entry *he, void *arg)
 643 {
 644         struct report *rep = arg;
 645         struct symbol *sym = he->ms.sym;
 646
 647         if (rep->symbol_ipc && sym && !sym->annotate2) {
 648                 struct evsel *evsel = hists_to_evsel(he->hists);
 649
 650                 symbol__annotate2(sym, he->ms.map, evsel,
 651                                   &annotation__default_options, NULL);
 652         }
 653
 654         return 0;
 655 }
 656
 657 static void report__output_resort(struct report *rep)
 658 {
 659         struct ui_progress prog;
 660         struct evsel *pos;
 661
 662         ui_progress__init(&prog, rep->nr_entries, "Sorting events for output...");
 663
 664         evlist__for_each_entry(rep->session->evlist, pos) {
 665                 perf_evsel__output_resort_cb(pos, &prog,
 666                                              hists__resort_cb, rep);
 667         }
 668
 669         ui_progress__finish();
 670 }
 671
 672 static void stats_setup(struct report *rep)
 673 {
 674         memset(&rep->tool, 0, sizeof(rep->tool));
 675         rep->tool.no_warn = true;
 676 }
 677
 678 static int stats_print(struct report *rep)
 679 {
 680         struct perf_session *session = rep->session;
 681
 682         perf_session__fprintf_nr_events(session, stdout);
 683         return 0;
 684 }
 685
 686 static void tasks_setup(struct report *rep)
 687 {
 688         memset(&rep->tool, 0, sizeof(rep->tool));
 689         rep->tool.ordered_events = true;
 690         if (rep->mmaps_mode) {
 691                 rep->tool.mmap = perf_event__process_mmap;
 692                 rep->tool.mmap2 = perf_event__process_mmap2;
 693         }
 694         rep->tool.comm = perf_event__process_comm;
 695         rep->tool.exit = perf_event__process_exit;
 696         rep->tool.fork = perf_event__process_fork;
 697         rep->tool.no_warn = true;
 698 }
 699
 700 struct task {
 701         struct thread           *thread;
 702         struct list_head         list;
 703         struct list_head         children;
 704 };
 705
 706 static struct task *tasks_list(struct task *task, struct machine *machine)
 707 {
 708         struct thread *parent_thread, *thread = task->thread;
 709         struct task   *parent_task;
 710
 711         /* Already listed. */
 712         if (!list_empty(&task->list))
 713                 return NULL;
 714
 715         /* Last one in the chain. */
 716         if (thread->ppid == -1)
 717                 return task;
 718
 719         parent_thread = machine__find_thread(machine, -1, thread->ppid);
 720         if (!parent_thread)
 721                 return ERR_PTR(-ENOENT);
 722
 723         parent_task = thread__priv(parent_thread);
 724         list_add_tail(&task->list, &parent_task->children);
 725         return tasks_list(parent_task, machine);
 726 }
 727
 728 static size_t maps__fprintf_task(struct maps *maps, int indent, FILE *fp)
 729 {
 730         size_t printed = 0;
 731         struct rb_node *nd;
 732
 733         for (nd = rb_first(&maps->entries); nd; nd = rb_next(nd)) {
 734                 struct map *map = rb_entry(nd, struct map, rb_node);
 735
 736                 printed += fprintf(fp, "%*s  %" PRIx64 "-%" PRIx64 " %c%c%c%c %08" PRIx64 " %" PRIu64 " %s\n",
 737                                    indent, "", map->start, map->end,
 738                                    map->prot & PROT_READ ? 'r' : '-',
 739                                    map->prot & PROT_WRITE ? 'w' : '-',
 740                                    map->prot & PROT_EXEC ? 'x' : '-',
 741                                    map->flags & MAP_SHARED ? 's' : 'p',
 742                                    map->pgoff,
 743                                    map->ino, map->dso->name);
 744         }
 745
 746         return printed;
 747 }
 748
 749 static int map_groups__fprintf_task(struct map_groups *mg, int indent, FILE *fp)
 750 {
 751         return maps__fprintf_task(&mg->maps, indent, fp);
 752 }
 753
 754 static void task__print_level(struct task *task, FILE *fp, int level)
 755 {
 756         struct thread *thread = task->thread;
 757         struct task *child;
 758         int comm_indent = fprintf(fp, "  %8d %8d %8d |%*s",
 759                                   thread->pid_, thread->tid, thread->ppid,
 760                                   level, "");
 761
 762         fprintf(fp, "%s\n", thread__comm_str(thread));
 763
 764         map_groups__fprintf_task(thread->mg, comm_indent, fp);
 765
 766         if (!list_empty(&task->children)) {
 767                 list_for_each_entry(child, &task->children, list)
 768                         task__print_level(child, fp, level + 1);
 769         }
 770 }
 771
 772 static int tasks_print(struct report *rep, FILE *fp)
 773 {
 774         struct perf_session *session = rep->session;
 775         struct machine      *machine = &session->machines.host;
 776         struct task *tasks, *task;
 777         unsigned int nr = 0, itask = 0, i;
 778         struct rb_node *nd;
 779         LIST_HEAD(list);
 780
 781         /*
 782          * No locking needed while accessing machine->threads,
 783          * because --tasks is single threaded command.
 784          */
 785
 786         /* Count all the threads. */
 787         for (i = 0; i < THREADS__TABLE_SIZE; i++)
 788                 nr += machine->threads[i].nr;
 789
 790         tasks = malloc(sizeof(*tasks) * nr);
 791         if (!tasks)
 792                 return -ENOMEM;
 793
 794         for (i = 0; i < THREADS__TABLE_SIZE; i++) {
 795                 struct threads *threads = &machine->threads[i];
 796
 797                 for (nd = rb_first_cached(&threads->entries); nd;
 798                      nd = rb_next(nd)) {
 799                         task = tasks + itask++;
 800
 801                         task->thread = rb_entry(nd, struct thread, rb_node);
 802                         INIT_LIST_HEAD(&task->children);
 803                         INIT_LIST_HEAD(&task->list);
 804                         thread__set_priv(task->thread, task);
 805                 }
 806         }
 807
 808         /*
 809          * Iterate every task down to the unprocessed parent
 810          * and link all in task children list. Task with no
 811          * parent is added into 'list'.
 812          */
 813         for (itask = 0; itask < nr; itask++) {
 814                 task = tasks + itask;
 815
 816                 if (!list_empty(&task->list))
 817                         continue;
 818
 819                 task = tasks_list(task, machine);
 820                 if (IS_ERR(task)) {
 821                         pr_err("Error: failed to process tasks\n");
 822                         free(tasks);
 823                         return PTR_ERR(task);
 824                 }
 825
 826                 if (task)
 827                         list_add_tail(&task->list, &list);
 828         }
 829
 830         fprintf(fp, "# %8s %8s %8s  %s\n", "pid", "tid", "ppid", "comm");
 831
 832         list_for_each_entry(task, &list, list)
 833                 task__print_level(task, fp, 0);
 834
 835         free(tasks);
 836         return 0;
 837 }
 838
 839 static int __cmd_report(struct report *rep)
 840 {
 841         int ret;
 842         struct perf_session *session = rep->session;
 843         struct evsel *pos;
 844         struct perf_data *data = session->data;
 845
 846         signal(SIGINT, sig_handler);
 847
 848         if (rep->cpu_list) {
 849                 ret = perf_session__cpu_bitmap(session, rep->cpu_list,
 850                                                rep->cpu_bitmap);
 851                 if (ret) {
 852                         ui__error("failed to set cpu bitmap\n");
 853                         return ret;
 854                 }
 855                 session->itrace_synth_opts->cpu_bitmap = rep->cpu_bitmap;
 856         }
 857
 858         if (rep->show_threads) {
 859                 ret = perf_read_values_init(&rep->show_threads_values);
 860                 if (ret)
 861                         return ret;
 862         }
 863
 864         ret = report__setup_sample_type(rep);
 865         if (ret) {
 866                 /* report__setup_sample_type() already showed error message */
 867                 return ret;
 868         }
 869
 870         if (rep->stats_mode)
 871                 stats_setup(rep);
 872
 873         if (rep->tasks_mode)
 874                 tasks_setup(rep);
 875
 876         ret = perf_session__process_events(session);
 877         if (ret) {
 878                 ui__error("failed to process sample\n");
 879                 return ret;
 880         }
 881
 882         if (rep->stats_mode)
 883                 return stats_print(rep);
 884
 885         if (rep->tasks_mode)
 886                 return tasks_print(rep, stdout);
 887
 888         report__warn_kptr_restrict(rep);
 889
 890         evlist__for_each_entry(session->evlist, pos)
 891                 rep->nr_entries += evsel__hists(pos)->nr_entries;
 892
 893         if (use_browser == 0) {
 894                 if (verbose > 3)
 895                         perf_session__fprintf(session, stdout);
 896
 897                 if (verbose > 2)
 898                         perf_session__fprintf_dsos(session, stdout);
 899
 900                 if (dump_trace) {
 901                         perf_session__fprintf_nr_events(session, stdout);
 902                         perf_evlist__fprintf_nr_events(session->evlist, stdout);
 903                         return 0;
 904                 }
 905         }
 906
 907         ret = report__collapse_hists(rep);
 908         if (ret) {
 909                 ui__error("failed to process hist entry\n");
 910                 return ret;
 911         }
 912
 913         if (session_done())
 914                 return 0;
 915
 916         /*
 917          * recalculate number of entries after collapsing since it
 918          * might be changed during the collapse phase.
 919          */
 920         rep->nr_entries = 0;
 921         evlist__for_each_entry(session->evlist, pos)
 922                 rep->nr_entries += evsel__hists(pos)->nr_entries;
 923
 924         if (rep->nr_entries == 0) {
 925                 ui__error("The %s data has no samples!\n", data->path);
 926                 return 0;
 927         }
 928
 929         report__output_resort(rep);
 930
 931         return report__browse_hists(rep);
 932 }
 933
 934 static int
 935 report_parse_callchain_opt(const struct option *opt, const char *arg, int unset)
 936 {
 937         struct callchain_param *callchain = opt->value;
 938
 939         callchain->enabled = !unset;
 940         /*
 941          * --no-call-graph
 942          */
 943         if (unset) {
 944                 symbol_conf.use_callchain = false;
 945                 callchain->mode = CHAIN_NONE;
 946                 return 0;
 947         }
 948
 949         return parse_callchain_report_opt(arg);
 950 }
 951
 952 static int
 953 parse_time_quantum(const struct option *opt, const char *arg,
 954                    int unset __maybe_unused)
 955 {
 956         unsigned long *time_q = opt->value;
 957         char *end;
 958
 959         *time_q = strtoul(arg, &end, 0);
 960         if (end == arg)
 961                 goto parse_err;
 962         if (*time_q == 0) {
 963                 pr_err("time quantum cannot be 0");
 964                 return -1;
 965         }
 966         end = skip_spaces(end);
 967         if (*end == 0)
 968                 return 0;
 969         if (!strcmp(end, "s")) {
 970                 *time_q *= NSEC_PER_SEC;
 971                 return 0;
 972         }
 973         if (!strcmp(end, "ms")) {
 974                 *time_q *= NSEC_PER_MSEC;
 975                 return 0;
 976         }
 977         if (!strcmp(end, "us")) {
 978                 *time_q *= NSEC_PER_USEC;
 979                 return 0;
 980         }
 981         if (!strcmp(end, "ns"))
 982                 return 0;
 983 parse_err:
 984         pr_err("Cannot parse time quantum `%s'\n", arg);
 985         return -1;
 986 }
 987
 988 int
 989 report_parse_ignore_callees_opt(const struct option *opt __maybe_unused,
 990                                 const char *arg, int unset __maybe_unused)
 991 {
 992         if (arg) {
 993                 int err = regcomp(&ignore_callees_regex, arg, REG_EXTENDED);
 994                 if (err) {
 995                         char buf[BUFSIZ];
 996                         regerror(err, &ignore_callees_regex, buf, sizeof(buf));
 997                         pr_err("Invalid --ignore-callees regex: %s\n%s", arg, buf);
 998                         return -1;
 999                 }
1000                 have_ignore_callees = 1;
1001         }
1002
1003         return 0;
1004 }
1005
1006 static int
1007 parse_branch_mode(const struct option *opt,
1008                   const char *str __maybe_unused, int unset)
1009 {
1010         int *branch_mode = opt->value;
1011
1012         *branch_mode = !unset;
1013         return 0;
1014 }
1015
1016 static int
1017 parse_percent_limit(const struct option *opt, const char *str,
1018                     int unset __maybe_unused)
1019 {
1020         struct report *rep = opt->value;
1021         double pcnt = strtof(str, NULL);
1022
1023         rep->min_percent = pcnt;
1024         callchain_param.min_percent = pcnt;
1025         return 0;
1026 }
1027
1028 int cmd_report(int argc, const char **argv)
1029 {
1030         struct perf_session *session;
1031         struct itrace_synth_opts itrace_synth_opts = { .set = 0, };
1032         struct stat st;
1033         bool has_br_stack = false;
1034         int branch_mode = -1;
1035         int last_key = 0;
1036         bool branch_call_mode = false;
1037 #define CALLCHAIN_DEFAULT_OPT  "graph,0.5,caller,function,percent"
1038         static const char report_callchain_help[] = "Display call graph (stack chain/backtrace):\n\n"
1039                                                     CALLCHAIN_REPORT_HELP
1040                                                     "\n\t\t\t\tDefault: " CALLCHAIN_DEFAULT_OPT;
1041         char callchain_default_opt[] = CALLCHAIN_DEFAULT_OPT;
1042         const char * const report_usage[] = {
1043                 "perf report [<options>]",
1044                 NULL
1045         };
1046         struct report report = {
1047                 .tool = {
1048                         .sample          = process_sample_event,
1049                         .mmap            = perf_event__process_mmap,
1050                         .mmap2           = perf_event__process_mmap2,
1051                         .comm            = perf_event__process_comm,
1052                         .namespaces      = perf_event__process_namespaces,
1053                         .exit            = perf_event__process_exit,
1054                         .fork            = perf_event__process_fork,
1055                         .lost            = perf_event__process_lost,
1056                         .read            = process_read_event,
1057                         .attr            = perf_event__process_attr,
1058                         .tracing_data    = perf_event__process_tracing_data,
1059                         .build_id        = perf_event__process_build_id,
1060                         .id_index        = perf_event__process_id_index,
1061                         .auxtrace_info   = perf_event__process_auxtrace_info,
1062                         .auxtrace        = perf_event__process_auxtrace,
1063                         .event_update    = perf_event__process_event_update,
1064                         .feature         = process_feature_event,
1065                         .ordered_events  = true,
1066                         .ordering_requires_timestamps = true,
1067                 },
1068                 .max_stack               = PERF_MAX_STACK_DEPTH,
1069                 .pretty_printing_style   = "normal",
1070                 .socket_filter           = -1,
1071                 .annotation_opts         = annotation__default_options,
1072         };
1073         const struct option options[] = {
1074         OPT_STRING('i', "input", &input_name, "file",
1075                     "input file name"),
1076         OPT_INCR('v', "verbose", &verbose,
1077                     "be more verbose (show symbol address, etc)"),
1078         OPT_BOOLEAN('q', "quiet", &quiet, "Do not show any message"),
1079         OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
1080                     "dump raw trace in ASCII"),
1081         OPT_BOOLEAN(0, "stats", &report.stats_mode, "Display event stats"),
1082         OPT_BOOLEAN(0, "tasks", &report.tasks_mode, "Display recorded tasks"),
1083         OPT_BOOLEAN(0, "mmaps", &report.mmaps_mode, "Display recorded tasks memory maps"),
1084         OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
1085                    "file", "vmlinux pathname"),
1086         OPT_BOOLEAN(0, "ignore-vmlinux", &symbol_conf.ignore_vmlinux,
1087                     "don't load vmlinux even if found"),
1088         OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name,
1089                    "file", "kallsyms pathname"),
1090         OPT_BOOLEAN('f', "force", &symbol_conf.force, "don't complain, do it"),
1091         OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
1092                     "load module symbols - WARNING: use only with -k and LIVE kernel"),
1093         OPT_BOOLEAN('n', "show-nr-samples", &symbol_conf.show_nr_samples,
1094                     "Show a column with the number of samples"),
1095         OPT_BOOLEAN('T', "threads", &report.show_threads,
1096                     "Show per-thread event counters"),
1097         OPT_STRING(0, "pretty", &report.pretty_printing_style, "key",
1098                    "pretty printing style key: normal raw"),
1099         OPT_BOOLEAN(0, "tui", &report.use_tui, "Use the TUI interface"),
1100         OPT_BOOLEAN(0, "gtk", &report.use_gtk, "Use the GTK2 interface"),
1101         OPT_BOOLEAN(0, "stdio", &report.use_stdio,
1102                     "Use the stdio interface"),
1103         OPT_BOOLEAN(0, "header", &report.header, "Show data header."),
1104         OPT_BOOLEAN(0, "header-only", &report.header_only,
1105                     "Show only data header."),
1106         OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
1107                    sort_help("sort by key(s):")),
1108         OPT_STRING('F', "fields", &field_order, "key[,keys...]",
1109                    sort_help("output field(s): overhead period sample ")),
1110         OPT_BOOLEAN(0, "show-cpu-utilization", &symbol_conf.show_cpu_utilization,
1111                     "Show sample percentage for different cpu modes"),
1112         OPT_BOOLEAN_FLAG(0, "showcpuutilization", &symbol_conf.show_cpu_utilization,
1113                     "Show sample percentage for different cpu modes", PARSE_OPT_HIDDEN),
1114         OPT_STRING('p', "parent", &parent_pattern, "regex",
1115                    "regex filter to identify parent, see: '--sort parent'"),
1116         OPT_BOOLEAN('x', "exclude-other", &symbol_conf.exclude_other,
1117                     "Only display entries with parent-match"),
1118         OPT_CALLBACK_DEFAULT('g', "call-graph", &callchain_param,
1119                              "print_type,threshold[,print_limit],order,sort_key[,branch],value",
1120                              report_callchain_help, &report_parse_callchain_opt,
1121                              callchain_default_opt),
1122         OPT_BOOLEAN(0, "children", &symbol_conf.cumulate_callchain,
1123                     "Accumulate callchains of children and show total overhead as well"),
1124         OPT_INTEGER(0, "max-stack", &report.max_stack,
1125                     "Set the maximum stack depth when parsing the callchain, "
1126                     "anything beyond the specified depth will be ignored. "
1127                     "Default: kernel.perf_event_max_stack or " __stringify(PERF_MAX_STACK_DEPTH)),
1128         OPT_BOOLEAN('G', "inverted", &report.inverted_callchain,
1129                     "alias for inverted call graph"),
1130         OPT_CALLBACK(0, "ignore-callees", NULL, "regex",
1131                    "ignore callees of these functions in call graphs",
1132                    report_parse_ignore_callees_opt),
1133         OPT_STRING('d', "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
1134                    "only consider symbols in these dsos"),
1135         OPT_STRING('c', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
1136                    "only consider symbols in these comms"),
1137         OPT_STRING(0, "pid", &symbol_conf.pid_list_str, "pid[,pid...]",
1138                    "only consider symbols in these pids"),
1139         OPT_STRING(0, "tid", &symbol_conf.tid_list_str, "tid[,tid...]",
1140                    "only consider symbols in these tids"),
1141         OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
1142                    "only consider these symbols"),
1143         OPT_STRING(0, "symbol-filter", &report.symbol_filter_str, "filter",
1144                    "only show symbols that (partially) match with this filter"),
1145         OPT_STRING('w', "column-widths", &symbol_conf.col_width_list_str,
1146                    "width[,width...]",
1147                    "don't try to adjust column width, use these fixed values"),
1148         OPT_STRING_NOEMPTY('t', "field-separator", &symbol_conf.field_sep, "separator",
1149                    "separator for columns, no spaces will be added between "
1150                    "columns '.' is reserved."),
1151         OPT_BOOLEAN('U', "hide-unresolved", &symbol_conf.hide_unresolved,
1152                     "Only display entries resolved to a symbol"),
1153         OPT_CALLBACK(0, "symfs", NULL, "directory",
1154                      "Look for files with symbols relative to this directory",
1155                      symbol__config_symfs),
1156         OPT_STRING('C', "cpu", &report.cpu_list, "cpu",
1157                    "list of cpus to profile"),
1158         OPT_BOOLEAN('I', "show-info", &report.show_full_info,
1159                     "Display extended information about perf.data file"),
1160         OPT_BOOLEAN(0, "source", &report.annotation_opts.annotate_src,
1161                     "Interleave source code with assembly code (default)"),
1162         OPT_BOOLEAN(0, "asm-raw", &report.annotation_opts.show_asm_raw,
1163                     "Display raw encoding of assembly instructions (default)"),
1164         OPT_STRING('M', "disassembler-style", &report.annotation_opts.disassembler_style, "disassembler style",
1165                    "Specify disassembler style (e.g. -M intel for intel syntax)"),
1166         OPT_BOOLEAN(0, "show-total-period", &symbol_conf.show_total_period,
1167                     "Show a column with the sum of periods"),
1168         OPT_BOOLEAN_SET(0, "group", &symbol_conf.event_group, &report.group_set,
1169                     "Show event group information together"),
1170         OPT_CALLBACK_NOOPT('b', "branch-stack", &branch_mode, "",
1171                     "use branch records for per branch histogram filling",
1172                     parse_branch_mode),
1173         OPT_BOOLEAN(0, "branch-history", &branch_call_mode,
1174                     "add last branch records to call history"),
1175         OPT_STRING(0, "objdump", &report.annotation_opts.objdump_path, "path",
1176                    "objdump binary to use for disassembly and annotations"),
1177         OPT_BOOLEAN(0, "demangle", &symbol_conf.demangle,
1178                     "Disable symbol demangling"),
1179         OPT_BOOLEAN(0, "demangle-kernel", &symbol_conf.demangle_kernel,
1180                     "Enable kernel symbol demangling"),
1181         OPT_BOOLEAN(0, "mem-mode", &report.mem_mode, "mem access profile"),
1182         OPT_INTEGER(0, "samples", &symbol_conf.res_sample,
1183                     "Number of samples to save per histogram entry for individual browsing"),
1184         OPT_CALLBACK(0, "percent-limit", &report, "percent",
1185                      "Don't show entries under that percent", parse_percent_limit),
1186         OPT_CALLBACK(0, "percentage", NULL, "relative|absolute",
1187                      "how to display percentage of filtered entries", parse_filter_percentage),
1188         OPT_CALLBACK_OPTARG(0, "itrace", &itrace_synth_opts, NULL, "opts",
1189                             "Instruction Tracing options\n" ITRACE_HELP,
1190                             itrace_parse_synth_opts),
1191         OPT_BOOLEAN(0, "full-source-path", &srcline_full_filename,
1192                         "Show full source file name path for source lines"),
1193         OPT_BOOLEAN(0, "show-ref-call-graph", &symbol_conf.show_ref_callgraph,
1194                     "Show callgraph from reference event"),
1195         OPT_INTEGER(0, "socket-filter", &report.socket_filter,
1196                     "only show processor socket that match with this filter"),
1197         OPT_BOOLEAN(0, "raw-trace", &symbol_conf.raw_trace,
1198                     "Show raw trace event output (do not use print fmt or plugins)"),
1199         OPT_BOOLEAN(0, "hierarchy", &symbol_conf.report_hierarchy,
1200                     "Show entries in a hierarchy"),
1201         OPT_CALLBACK_DEFAULT(0, "stdio-color", NULL, "mode",
1202                              "'always' (default), 'never' or 'auto' only applicable to --stdio mode",
1203                              stdio__config_color, "always"),
1204         OPT_STRING(0, "time", &report.time_str, "str",
1205                    "Time span of interest (start,stop)"),
1206         OPT_BOOLEAN(0, "inline", &symbol_conf.inline_name,
1207                     "Show inline function"),
1208         OPT_CALLBACK(0, "percent-type", &report.annotation_opts, "local-period",
1209                      "Set percent type local/global-period/hits",
1210                      annotate_parse_percent_type),
1211         OPT_BOOLEAN(0, "ns", &symbol_conf.nanosecs, "Show times in nanosecs"),
1212         OPT_CALLBACK(0, "time-quantum", &symbol_conf.time_quantum, "time (ms|us|ns|s)",
1213                      "Set time quantum for time sort key (default 100ms)",
1214                      parse_time_quantum),
1215         OPTS_EVSWITCH(&report.evswitch),
1216         OPT_END()
1217         };
1218         struct perf_data data = {
1219                 .mode  = PERF_DATA_MODE_READ,
1220         };
1221         int ret = hists__init();
1222         char sort_tmp[128];
1223
1224         if (ret < 0)
1225                 return ret;
1226
1227         ret = perf_config(report__config, &report);
1228         if (ret)
1229                 return ret;
1230
1231         argc = parse_options(argc, argv, options, report_usage, 0);
1232         if (argc) {
1233                 /*
1234                  * Special case: if there's an argument left then assume that
1235                  * it's a symbol filter:
1236                  */
1237                 if (argc > 1)
1238                         usage_with_options(report_usage, options);
1239
1240                 report.symbol_filter_str = argv[0];
1241         }
1242
1243         if (report.mmaps_mode)
1244                 report.tasks_mode = true;
1245
1246         if (quiet)
1247                 perf_quiet_option();
1248
1249         if (symbol_conf.vmlinux_name &&
1250             access(symbol_conf.vmlinux_name, R_OK)) {
1251                 pr_err("Invalid file: %s\n", symbol_conf.vmlinux_name);
1252                 return -EINVAL;
1253         }
1254         if (symbol_conf.kallsyms_name &&
1255             access(symbol_conf.kallsyms_name, R_OK)) {
1256                 pr_err("Invalid file: %s\n", symbol_conf.kallsyms_name);
1257                 return -EINVAL;
1258         }
1259
1260         if (report.inverted_callchain)
1261                 callchain_param.order = ORDER_CALLER;
1262         if (symbol_conf.cumulate_callchain && !callchain_param.order_set)
1263                 callchain_param.order = ORDER_CALLER;
1264
1265         if (itrace_synth_opts.callchain &&
1266             (int)itrace_synth_opts.callchain_sz > report.max_stack)
1267                 report.max_stack = itrace_synth_opts.callchain_sz;
1268
1269         if (!input_name || !strlen(input_name)) {
1270                 if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
1271                         input_name = "-";
1272                 else
1273                         input_name = "perf.data";
1274         }
1275
1276         data.path  = input_name;
1277         data.force = symbol_conf.force;
1278
1279 repeat:
1280         session = perf_session__new(&data, false, &report.tool);
1281         if (IS_ERR(session))
1282                 return PTR_ERR(session);
1283
1284         ret = evswitch__init(&report.evswitch, session->evlist, stderr);
1285         if (ret)
1286                 return ret;
1287
1288         if (zstd_init(&(session->zstd_data), 0) < 0)
1289                 pr_warning("Decompression initialization failed. Reported data may be incomplete.\n");
1290
1291         if (report.queue_size) {
1292                 ordered_events__set_alloc_size(&session->ordered_events,
1293                                                report.queue_size);
1294         }
1295
1296         session->itrace_synth_opts = &itrace_synth_opts;
1297
1298         report.session = session;
1299
1300         has_br_stack = perf_header__has_feat(&session->header,
1301                                              HEADER_BRANCH_STACK);
1302         if (perf_evlist__combined_sample_type(session->evlist) & PERF_SAMPLE_STACK_USER)
1303                 has_br_stack = false;
1304
1305         setup_forced_leader(&report, session->evlist);
1306
1307         if (itrace_synth_opts.last_branch)
1308                 has_br_stack = true;
1309
1310         if (has_br_stack && branch_call_mode)
1311                 symbol_conf.show_branchflag_count = true;
1312
1313         memset(&report.brtype_stat, 0, sizeof(struct branch_type_stat));
1314
1315         /*
1316          * Branch mode is a tristate:
1317          * -1 means default, so decide based on the file having branch data.
1318          * 0/1 means the user chose a mode.
1319          */
1320         if (((branch_mode == -1 && has_br_stack) || branch_mode == 1) &&
1321             !branch_call_mode) {
1322                 sort__mode = SORT_MODE__BRANCH;
1323                 symbol_conf.cumulate_callchain = false;
1324         }
1325         if (branch_call_mode) {
1326                 callchain_param.key = CCKEY_ADDRESS;
1327                 callchain_param.branch_callstack = 1;
1328                 symbol_conf.use_callchain = true;
1329                 callchain_register_param(&callchain_param);
1330                 if (sort_order == NULL)
1331                         sort_order = "srcline,symbol,dso";
1332         }
1333
1334         if (report.mem_mode) {
1335                 if (sort__mode == SORT_MODE__BRANCH) {
1336                         pr_err("branch and mem mode incompatible\n");
1337                         goto error;
1338                 }
1339                 sort__mode = SORT_MODE__MEMORY;
1340                 symbol_conf.cumulate_callchain = false;
1341         }
1342
1343         if (symbol_conf.report_hierarchy) {
1344                 /* disable incompatible options */
1345                 symbol_conf.cumulate_callchain = false;
1346
1347                 if (field_order) {
1348                         pr_err("Error: --hierarchy and --fields options cannot be used together\n");
1349                         parse_options_usage(report_usage, options, "F", 1);
1350                         parse_options_usage(NULL, options, "hierarchy", 0);
1351                         goto error;
1352                 }
1353
1354                 perf_hpp_list.need_collapse = true;
1355         }
1356
1357         if (report.use_stdio)
1358                 use_browser = 0;
1359         else if (report.use_tui)
1360                 use_browser = 1;
1361         else if (report.use_gtk)
1362                 use_browser = 2;
1363
1364         /* Force tty output for header output and per-thread stat. */
1365         if (report.header || report.header_only || report.show_threads)
1366                 use_browser = 0;
1367         if (report.header || report.header_only)
1368                 report.tool.show_feat_hdr = SHOW_FEAT_HEADER;
1369         if (report.show_full_info)
1370                 report.tool.show_feat_hdr = SHOW_FEAT_HEADER_FULL_INFO;
1371         if (report.stats_mode || report.tasks_mode)
1372                 use_browser = 0;
1373         if (report.stats_mode && report.tasks_mode) {
1374                 pr_err("Error: --tasks and --mmaps can't be used together with --stats\n");
1375                 goto error;
1376         }
1377
1378         if (strcmp(input_name, "-") != 0)
1379                 setup_browser(true);
1380         else
1381                 use_browser = 0;
1382
1383         if (sort_order && strstr(sort_order, "ipc")) {
1384                 parse_options_usage(report_usage, options, "s", 1);
1385                 goto error;
1386         }
1387
1388         if (sort_order && strstr(sort_order, "symbol")) {
1389                 if (sort__mode == SORT_MODE__BRANCH) {
1390                         snprintf(sort_tmp, sizeof(sort_tmp), "%s,%s",
1391                                  sort_order, "ipc_lbr");
1392                         report.symbol_ipc = true;
1393                 } else {
1394                         snprintf(sort_tmp, sizeof(sort_tmp), "%s,%s",
1395                                  sort_order, "ipc_null");
1396                 }
1397
1398                 sort_order = sort_tmp;
1399         }
1400
1401         if ((last_key != K_SWITCH_INPUT_DATA) &&
1402             (setup_sorting(session->evlist) < 0)) {
1403                 if (sort_order)
1404                         parse_options_usage(report_usage, options, "s", 1);
1405                 if (field_order)
1406                         parse_options_usage(sort_order ? NULL : report_usage,
1407                                             options, "F", 1);
1408                 goto error;
1409         }
1410
1411         if ((report.header || report.header_only) && !quiet) {
1412                 perf_session__fprintf_info(session, stdout,
1413                                            report.show_full_info);
1414                 if (report.header_only) {
1415                         ret = 0;
1416                         goto error;
1417                 }
1418         } else if (use_browser == 0 && !quiet &&
1419                    !report.stats_mode && !report.tasks_mode) {
1420                 fputs("# To display the perf.data header info, please use --header/--header-only options.\n#\n",
1421                       stdout);
1422         }
1423
1424         /*
1425          * Only in the TUI browser we are doing integrated annotation,
1426          * so don't allocate extra space that won't be used in the stdio
1427          * implementation.
1428          */
1429         if (ui__has_annotation() || report.symbol_ipc) {
1430                 ret = symbol__annotation_init();
1431                 if (ret < 0)
1432                         goto error;
1433                 /*
1434                  * For searching by name on the "Browse map details".
1435                  * providing it only in verbose mode not to bloat too
1436                  * much struct symbol.
1437                  */
1438                 if (verbose > 0) {
1439                         /*
1440                          * XXX: Need to provide a less kludgy way to ask for
1441                          * more space per symbol, the u32 is for the index on
1442                          * the ui browser.
1443                          * See symbol__browser_index.
1444                          */
1445                         symbol_conf.priv_size += sizeof(u32);
1446                         symbol_conf.sort_by_name = true;
1447                 }
1448                 annotation_config__init();
1449         }
1450
1451         if (symbol__init(&session->header.env) < 0)
1452                 goto error;
1453
1454         if (report.time_str) {
1455                 ret = perf_time__parse_for_ranges(report.time_str, session,
1456                                                   &report.ptime_range,
1457                                                   &report.range_size,
1458                                                   &report.range_num);
1459                 if (ret < 0)
1460                         goto error;
1461
1462                 itrace_synth_opts__set_time_range(&itrace_synth_opts,
1463                                                   report.ptime_range,
1464                                                   report.range_num);
1465         }
1466
1467         if (session->tevent.pevent &&
1468             tep_set_function_resolver(session->tevent.pevent,
1469                                       machine__resolve_kernel_addr,
1470                                       &session->machines.host) < 0) {
1471                 pr_err("%s: failed to set libtraceevent function resolver\n",
1472                        __func__);
1473                 return -1;
1474         }
1475
1476         sort__setup_elide(stdout);
1477
1478         ret = __cmd_report(&report);
1479         if (ret == K_SWITCH_INPUT_DATA) {
1480                 perf_session__delete(session);
1481                 last_key = K_SWITCH_INPUT_DATA;
1482                 goto repeat;
1483         } else
1484                 ret = 0;
1485
1486 error:
1487         if (report.ptime_range) {
1488                 itrace_synth_opts__clear_time_range(&itrace_synth_opts);
1489                 zfree(&report.ptime_range);
1490         }
1491         zstd_fini(&(session->zstd_data));
1492         perf_session__delete(session);
1493         return ret;
1494 }