tools/perf/builtin-report.c

   1 /*
   2  * builtin-report.c
   3  *
   4  * Builtin report command: Analyze the perf.data input file,
   5  * look up and read DSOs and symbol information and display
   6  * a histogram of results, along various sorting keys.
   7  */
   8 #include "builtin.h"
   9
  10 #include "util/util.h"
  11 #include "util/cache.h"
  12
  13 #include "util/annotate.h"
  14 #include "util/color.h"
  15 #include <linux/list.h>
  16 #include <linux/rbtree.h>
  17 #include "util/symbol.h"
  18 #include "util/callchain.h"
  19 #include "util/strlist.h"
  20 #include "util/values.h"
  21
  22 #include "perf.h"
  23 #include "util/debug.h"
  24 #include "util/evlist.h"
  25 #include "util/evsel.h"
  26 #include "util/header.h"
  27 #include "util/session.h"
  28 #include "util/tool.h"
  29
  30 #include "util/parse-options.h"
  31 #include "util/parse-events.h"
  32
  33 #include "util/thread.h"
  34 #include "util/sort.h"
  35 #include "util/hist.h"
  36 #include "util/data.h"
  37 #include "arch/common.h"
  38
  39 #include <dlfcn.h>
  40 #include <linux/bitmap.h>
  41
  42 struct report {
  43         struct perf_tool        tool;
  44         struct perf_session     *session;
  45         bool                    force, use_tui, use_gtk, use_stdio;
  46         bool                    hide_unresolved;
  47         bool                    dont_use_callchains;
  48         bool                    show_full_info;
  49         bool                    show_threads;
  50         bool                    inverted_callchain;
  51         bool                    mem_mode;
  52         bool                    header;
  53         bool                    header_only;
  54         int                     max_stack;
  55         struct perf_read_values show_threads_values;
  56         const char              *pretty_printing_style;
  57         const char              *cpu_list;
  58         const char              *symbol_filter_str;
  59         float                   min_percent;
  60         u64                     nr_entries;
  61         u64                     queue_size;
  62         DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
  63 };
  64
  65 static int report__config(const char *var, const char *value, void *cb)
  66 {
  67         struct report *rep = cb;
  68
  69         if (!strcmp(var, "report.group")) {
  70                 symbol_conf.event_group = perf_config_bool(var, value);
  71                 return 0;
  72         }
  73         if (!strcmp(var, "report.percent-limit")) {
  74                 rep->min_percent = strtof(value, NULL);
  75                 return 0;
  76         }
  77         if (!strcmp(var, "report.children")) {
  78                 symbol_conf.cumulate_callchain = perf_config_bool(var, value);
  79                 return 0;
  80         }
  81         if (!strcmp(var, "report.queue-size")) {
  82                 rep->queue_size = perf_config_u64(var, value);
  83                 return 0;
  84         }
  85
  86         return perf_default_config(var, value, cb);
  87 }
  88
  89 static int hist_iter__report_callback(struct hist_entry_iter *iter,
  90                                       struct addr_location *al, bool single,
  91                                       void *arg)
  92 {
  93         int err = 0;
  94         struct report *rep = arg;
  95         struct hist_entry *he = iter->he;
  96         struct perf_evsel *evsel = iter->evsel;
  97         struct mem_info *mi;
  98         struct branch_info *bi;
  99
 100         if (!ui__has_annotation())
 101                 return 0;
 102
 103         if (sort__mode == SORT_MODE__BRANCH) {
 104                 bi = he->branch_info;
 105                 err = addr_map_symbol__inc_samples(&bi->from, evsel->idx);
 106                 if (err)
 107                         goto out;
 108
 109                 err = addr_map_symbol__inc_samples(&bi->to, evsel->idx);
 110
 111         } else if (rep->mem_mode) {
 112                 mi = he->mem_info;
 113                 err = addr_map_symbol__inc_samples(&mi->daddr, evsel->idx);
 114                 if (err)
 115                         goto out;
 116
 117                 err = hist_entry__inc_addr_samples(he, evsel->idx, al->addr);
 118
 119         } else if (symbol_conf.cumulate_callchain) {
 120                 if (single)
 121                         err = hist_entry__inc_addr_samples(he, evsel->idx,
 122                                                            al->addr);
 123         } else {
 124                 err = hist_entry__inc_addr_samples(he, evsel->idx, al->addr);
 125         }
 126
 127 out:
 128         return err;
 129 }
 130
 131 static int process_sample_event(struct perf_tool *tool,
 132                                 union perf_event *event,
 133                                 struct perf_sample *sample,
 134                                 struct perf_evsel *evsel,
 135                                 struct machine *machine)
 136 {
 137         struct report *rep = container_of(tool, struct report, tool);
 138         struct addr_location al;
 139         struct hist_entry_iter iter = {
 140                 .hide_unresolved = rep->hide_unresolved,
 141                 .add_entry_cb = hist_iter__report_callback,
 142         };
 143         int ret;
 144
 145         if (perf_event__preprocess_sample(event, machine, &al, sample) < 0) {
 146                 pr_debug("problem processing %d event, skipping it.\n",
 147                          event->header.type);
 148                 return -1;
 149         }
 150
 151         if (rep->hide_unresolved && al.sym == NULL)
 152                 return 0;
 153
 154         if (rep->cpu_list && !test_bit(sample->cpu, rep->cpu_bitmap))
 155                 return 0;
 156
 157         if (sort__mode == SORT_MODE__BRANCH)
 158                 iter.ops = &hist_iter_branch;
 159         else if (rep->mem_mode)
 160                 iter.ops = &hist_iter_mem;
 161         else if (symbol_conf.cumulate_callchain)
 162                 iter.ops = &hist_iter_cumulative;
 163         else
 164                 iter.ops = &hist_iter_normal;
 165
 166         if (al.map != NULL)
 167                 al.map->dso->hit = 1;
 168
 169         ret = hist_entry_iter__add(&iter, &al, evsel, sample, rep->max_stack,
 170                                    rep);
 171         if (ret < 0)
 172                 pr_debug("problem adding hist entry, skipping event\n");
 173
 174         return ret;
 175 }
 176
 177 static int process_read_event(struct perf_tool *tool,
 178                               union perf_event *event,
 179                               struct perf_sample *sample __maybe_unused,
 180                               struct perf_evsel *evsel,
 181                               struct machine *machine __maybe_unused)
 182 {
 183         struct report *rep = container_of(tool, struct report, tool);
 184
 185         if (rep->show_threads) {
 186                 const char *name = evsel ? perf_evsel__name(evsel) : "unknown";
 187                 perf_read_values_add_value(&rep->show_threads_values,
 188                                            event->read.pid, event->read.tid,
 189                                            event->read.id,
 190                                            name,
 191                                            event->read.value);
 192         }
 193
 194         dump_printf(": %d %d %s %" PRIu64 "\n", event->read.pid, event->read.tid,
 195                     evsel ? perf_evsel__name(evsel) : "FAIL",
 196                     event->read.value);
 197
 198         return 0;
 199 }
 200
 201 /* For pipe mode, sample_type is not currently set */
 202 static int report__setup_sample_type(struct report *rep)
 203 {
 204         struct perf_session *session = rep->session;
 205         u64 sample_type = perf_evlist__combined_sample_type(session->evlist);
 206         bool is_pipe = perf_data_file__is_pipe(session->file);
 207
 208         if (!is_pipe && !(sample_type & PERF_SAMPLE_CALLCHAIN)) {
 209                 if (sort__has_parent) {
 210                         ui__error("Selected --sort parent, but no "
 211                                     "callchain data. Did you call "
 212                                     "'perf record' without -g?\n");
 213                         return -EINVAL;
 214                 }
 215                 if (symbol_conf.use_callchain) {
 216                         ui__error("Selected -g or --branch-history but no "
 217                                   "callchain data. Did\n"
 218                                   "you call 'perf record' without -g?\n");
 219                         return -1;
 220                 }
 221         } else if (!rep->dont_use_callchains &&
 222                    callchain_param.mode != CHAIN_NONE &&
 223                    !symbol_conf.use_callchain) {
 224                         symbol_conf.use_callchain = true;
 225                         if (callchain_register_param(&callchain_param) < 0) {
 226                                 ui__error("Can't register callchain params.\n");
 227                                 return -EINVAL;
 228                         }
 229         }
 230
 231         if (symbol_conf.cumulate_callchain) {
 232                 /* Silently ignore if callchain is missing */
 233                 if (!(sample_type & PERF_SAMPLE_CALLCHAIN)) {
 234                         symbol_conf.cumulate_callchain = false;
 235                         perf_hpp__cancel_cumulate();
 236                 }
 237         }
 238
 239         if (sort__mode == SORT_MODE__BRANCH) {
 240                 if (!is_pipe &&
 241                     !(sample_type & PERF_SAMPLE_BRANCH_STACK)) {
 242                         ui__error("Selected -b but no branch data. "
 243                                   "Did you call perf record without -b?\n");
 244                         return -1;
 245                 }
 246         }
 247
 248         if (symbol_conf.use_callchain || symbol_conf.cumulate_callchain) {
 249                 if ((sample_type & PERF_SAMPLE_REGS_USER) &&
 250                     (sample_type & PERF_SAMPLE_STACK_USER))
 251                         callchain_param.record_mode = CALLCHAIN_DWARF;
 252                 else
 253                         callchain_param.record_mode = CALLCHAIN_FP;
 254         }
 255         return 0;
 256 }
 257
 258 static void sig_handler(int sig __maybe_unused)
 259 {
 260         session_done = 1;
 261 }
 262
 263 static size_t hists__fprintf_nr_sample_events(struct hists *hists, struct report *rep,
 264                                               const char *evname, FILE *fp)
 265 {
 266         size_t ret;
 267         char unit;
 268         unsigned long nr_samples = hists->stats.nr_events[PERF_RECORD_SAMPLE];
 269         u64 nr_events = hists->stats.total_period;
 270         struct perf_evsel *evsel = hists_to_evsel(hists);
 271         char buf[512];
 272         size_t size = sizeof(buf);
 273
 274         if (symbol_conf.filter_relative) {
 275                 nr_samples = hists->stats.nr_non_filtered_samples;
 276                 nr_events = hists->stats.total_non_filtered_period;
 277         }
 278
 279         if (perf_evsel__is_group_event(evsel)) {
 280                 struct perf_evsel *pos;
 281
 282                 perf_evsel__group_desc(evsel, buf, size);
 283                 evname = buf;
 284
 285                 for_each_group_member(pos, evsel) {
 286                         const struct hists *pos_hists = evsel__hists(pos);
 287
 288                         if (symbol_conf.filter_relative) {
 289                                 nr_samples += pos_hists->stats.nr_non_filtered_samples;
 290                                 nr_events += pos_hists->stats.total_non_filtered_period;
 291                         } else {
 292                                 nr_samples += pos_hists->stats.nr_events[PERF_RECORD_SAMPLE];
 293                                 nr_events += pos_hists->stats.total_period;
 294                         }
 295                 }
 296         }
 297
 298         nr_samples = convert_unit(nr_samples, &unit);
 299         ret = fprintf(fp, "# Samples: %lu%c", nr_samples, unit);
 300         if (evname != NULL)
 301                 ret += fprintf(fp, " of event '%s'", evname);
 302
 303         if (rep->mem_mode) {
 304                 ret += fprintf(fp, "\n# Total weight : %" PRIu64, nr_events);
 305                 ret += fprintf(fp, "\n# Sort order   : %s", sort_order);
 306         } else
 307                 ret += fprintf(fp, "\n# Event count (approx.): %" PRIu64, nr_events);
 308         return ret + fprintf(fp, "\n#\n");
 309 }
 310
 311 static int perf_evlist__tty_browse_hists(struct perf_evlist *evlist,
 312                                          struct report *rep,
 313                                          const char *help)
 314 {
 315         struct perf_evsel *pos;
 316
 317         evlist__for_each(evlist, pos) {
 318                 struct hists *hists = evsel__hists(pos);
 319                 const char *evname = perf_evsel__name(pos);
 320
 321                 if (symbol_conf.event_group &&
 322                     !perf_evsel__is_group_leader(pos))
 323                         continue;
 324
 325                 hists__fprintf_nr_sample_events(hists, rep, evname, stdout);
 326                 hists__fprintf(hists, true, 0, 0, rep->min_percent, stdout);
 327                 fprintf(stdout, "\n\n");
 328         }
 329
 330         if (sort_order == default_sort_order &&
 331             parent_pattern == default_parent_pattern) {
 332                 fprintf(stdout, "#\n# (%s)\n#\n", help);
 333
 334                 if (rep->show_threads) {
 335                         bool style = !strcmp(rep->pretty_printing_style, "raw");
 336                         perf_read_values_display(stdout, &rep->show_threads_values,
 337                                                  style);
 338                         perf_read_values_destroy(&rep->show_threads_values);
 339                 }
 340         }
 341
 342         return 0;
 343 }
 344
 345 static void report__warn_kptr_restrict(const struct report *rep)
 346 {
 347         struct map *kernel_map = rep->session->machines.host.vmlinux_maps[MAP__FUNCTION];
 348         struct kmap *kernel_kmap = map__kmap(kernel_map);
 349
 350         if (kernel_map == NULL ||
 351             (kernel_map->dso->hit &&
 352              (kernel_kmap->ref_reloc_sym == NULL ||
 353               kernel_kmap->ref_reloc_sym->addr == 0))) {
 354                 const char *desc =
 355                     "As no suitable kallsyms nor vmlinux was found, kernel samples\n"
 356                     "can't be resolved.";
 357
 358                 if (kernel_map) {
 359                         const struct dso *kdso = kernel_map->dso;
 360                         if (!RB_EMPTY_ROOT(&kdso->symbols[MAP__FUNCTION])) {
 361                                 desc = "If some relocation was applied (e.g. "
 362                                        "kexec) symbols may be misresolved.";
 363                         }
 364                 }
 365
 366                 ui__warning(
 367 "Kernel address maps (/proc/{kallsyms,modules}) were restricted.\n\n"
 368 "Check /proc/sys/kernel/kptr_restrict before running 'perf record'.\n\n%s\n\n"
 369 "Samples in kernel modules can't be resolved as well.\n\n",
 370                 desc);
 371         }
 372 }
 373
 374 static int report__gtk_browse_hists(struct report *rep, const char *help)
 375 {
 376         int (*hist_browser)(struct perf_evlist *evlist, const char *help,
 377                             struct hist_browser_timer *timer, float min_pcnt);
 378
 379         hist_browser = dlsym(perf_gtk_handle, "perf_evlist__gtk_browse_hists");
 380
 381         if (hist_browser == NULL) {
 382                 ui__error("GTK browser not found!\n");
 383                 return -1;
 384         }
 385
 386         return hist_browser(rep->session->evlist, help, NULL, rep->min_percent);
 387 }
 388
 389 static int report__browse_hists(struct report *rep)
 390 {
 391         int ret;
 392         struct perf_session *session = rep->session;
 393         struct perf_evlist *evlist = session->evlist;
 394         const char *help = "For a higher level overview, try: perf report --sort comm,dso";
 395
 396         switch (use_browser) {
 397         case 1:
 398                 ret = perf_evlist__tui_browse_hists(evlist, help, NULL,
 399                                                     rep->min_percent,
 400                                                     &session->header.env);
 401                 /*
 402                  * Usually "ret" is the last pressed key, and we only
 403                  * care if the key notifies us to switch data file.
 404                  */
 405                 if (ret != K_SWITCH_INPUT_DATA)
 406                         ret = 0;
 407                 break;
 408         case 2:
 409                 ret = report__gtk_browse_hists(rep, help);
 410                 break;
 411         default:
 412                 ret = perf_evlist__tty_browse_hists(evlist, rep, help);
 413                 break;
 414         }
 415
 416         return ret;
 417 }
 418
 419 static void report__collapse_hists(struct report *rep)
 420 {
 421         struct ui_progress prog;
 422         struct perf_evsel *pos;
 423
 424         ui_progress__init(&prog, rep->nr_entries, "Merging related events...");
 425
 426         evlist__for_each(rep->session->evlist, pos) {
 427                 struct hists *hists = evsel__hists(pos);
 428
 429                 if (pos->idx == 0)
 430                         hists->symbol_filter_str = rep->symbol_filter_str;
 431
 432                 hists__collapse_resort(hists, &prog);
 433
 434                 /* Non-group events are considered as leader */
 435                 if (symbol_conf.event_group &&
 436                     !perf_evsel__is_group_leader(pos)) {
 437                         struct hists *leader_hists = evsel__hists(pos->leader);
 438
 439                         hists__match(leader_hists, hists);
 440                         hists__link(leader_hists, hists);
 441                 }
 442         }
 443
 444         ui_progress__finish();
 445 }
 446
 447 static void report__output_resort(struct report *rep)
 448 {
 449         struct ui_progress prog;
 450         struct perf_evsel *pos;
 451
 452         ui_progress__init(&prog, rep->nr_entries, "Sorting events for output...");
 453
 454         evlist__for_each(rep->session->evlist, pos)
 455                 hists__output_resort(evsel__hists(pos), &prog);
 456
 457         ui_progress__finish();
 458 }
 459
 460 static int __cmd_report(struct report *rep)
 461 {
 462         int ret;
 463         struct perf_session *session = rep->session;
 464         struct perf_evsel *pos;
 465         struct perf_data_file *file = session->file;
 466
 467         signal(SIGINT, sig_handler);
 468
 469         if (rep->cpu_list) {
 470                 ret = perf_session__cpu_bitmap(session, rep->cpu_list,
 471                                                rep->cpu_bitmap);
 472                 if (ret)
 473                         return ret;
 474         }
 475
 476         if (rep->show_threads)
 477                 perf_read_values_init(&rep->show_threads_values);
 478
 479         ret = report__setup_sample_type(rep);
 480         if (ret)
 481                 return ret;
 482
 483         ret = perf_session__process_events(session, &rep->tool);
 484         if (ret)
 485                 return ret;
 486
 487         report__warn_kptr_restrict(rep);
 488
 489         evlist__for_each(session->evlist, pos)
 490                 rep->nr_entries += evsel__hists(pos)->nr_entries;
 491
 492         if (use_browser == 0) {
 493                 if (verbose > 3)
 494                         perf_session__fprintf(session, stdout);
 495
 496                 if (verbose > 2)
 497                         perf_session__fprintf_dsos(session, stdout);
 498
 499                 if (dump_trace) {
 500                         perf_session__fprintf_nr_events(session, stdout);
 501                         perf_evlist__fprintf_nr_events(session->evlist, stdout);
 502                         return 0;
 503                 }
 504         }
 505
 506         report__collapse_hists(rep);
 507
 508         if (session_done())
 509                 return 0;
 510
 511         /*
 512          * recalculate number of entries after collapsing since it
 513          * might be changed during the collapse phase.
 514          */
 515         rep->nr_entries = 0;
 516         evlist__for_each(session->evlist, pos)
 517                 rep->nr_entries += evsel__hists(pos)->nr_entries;
 518
 519         if (rep->nr_entries == 0) {
 520                 ui__error("The %s file has no samples!\n", file->path);
 521                 return 0;
 522         }
 523
 524         report__output_resort(rep);
 525
 526         return report__browse_hists(rep);
 527 }
 528
 529 static int
 530 report_parse_callchain_opt(const struct option *opt, const char *arg, int unset)
 531 {
 532         struct report *rep = (struct report *)opt->value;
 533
 534         /*
 535          * --no-call-graph
 536          */
 537         if (unset) {
 538                 rep->dont_use_callchains = true;
 539                 return 0;
 540         }
 541
 542         return parse_callchain_report_opt(arg);
 543 }
 544
 545 int
 546 report_parse_ignore_callees_opt(const struct option *opt __maybe_unused,
 547                                 const char *arg, int unset __maybe_unused)
 548 {
 549         if (arg) {
 550                 int err = regcomp(&ignore_callees_regex, arg, REG_EXTENDED);
 551                 if (err) {
 552                         char buf[BUFSIZ];
 553                         regerror(err, &ignore_callees_regex, buf, sizeof(buf));
 554                         pr_err("Invalid --ignore-callees regex: %s\n%s", arg, buf);
 555                         return -1;
 556                 }
 557                 have_ignore_callees = 1;
 558         }
 559
 560         return 0;
 561 }
 562
 563 static int
 564 parse_branch_mode(const struct option *opt __maybe_unused,
 565                   const char *str __maybe_unused, int unset)
 566 {
 567         int *branch_mode = opt->value;
 568
 569         *branch_mode = !unset;
 570         return 0;
 571 }
 572
 573 static int
 574 parse_percent_limit(const struct option *opt, const char *str,
 575                     int unset __maybe_unused)
 576 {
 577         struct report *rep = opt->value;
 578
 579         rep->min_percent = strtof(str, NULL);
 580         return 0;
 581 }
 582
 583 int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused)
 584 {
 585         struct perf_session *session;
 586         struct stat st;
 587         bool has_br_stack = false;
 588         int branch_mode = -1;
 589         bool branch_call_mode = false;
 590         char callchain_default_opt[] = "fractal,0.5,callee";
 591         const char * const report_usage[] = {
 592                 "perf report [<options>]",
 593                 NULL
 594         };
 595         struct report report = {
 596                 .tool = {
 597                         .sample          = process_sample_event,
 598                         .mmap            = perf_event__process_mmap,
 599                         .mmap2           = perf_event__process_mmap2,
 600                         .comm            = perf_event__process_comm,
 601                         .exit            = perf_event__process_exit,
 602                         .fork            = perf_event__process_fork,
 603                         .lost            = perf_event__process_lost,
 604                         .read            = process_read_event,
 605                         .attr            = perf_event__process_attr,
 606                         .tracing_data    = perf_event__process_tracing_data,
 607                         .build_id        = perf_event__process_build_id,
 608                         .ordered_events  = true,
 609                         .ordering_requires_timestamps = true,
 610                 },
 611                 .max_stack               = PERF_MAX_STACK_DEPTH,
 612                 .pretty_printing_style   = "normal",
 613         };
 614         const struct option options[] = {
 615         OPT_STRING('i', "input", &input_name, "file",
 616                     "input file name"),
 617         OPT_INCR('v', "verbose", &verbose,
 618                     "be more verbose (show symbol address, etc)"),
 619         OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
 620                     "dump raw trace in ASCII"),
 621         OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
 622                    "file", "vmlinux pathname"),
 623         OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name,
 624                    "file", "kallsyms pathname"),
 625         OPT_BOOLEAN('f', "force", &report.force, "don't complain, do it"),
 626         OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
 627                     "load module symbols - WARNING: use only with -k and LIVE kernel"),
 628         OPT_BOOLEAN('n', "show-nr-samples", &symbol_conf.show_nr_samples,
 629                     "Show a column with the number of samples"),
 630         OPT_BOOLEAN('T', "threads", &report.show_threads,
 631                     "Show per-thread event counters"),
 632         OPT_STRING(0, "pretty", &report.pretty_printing_style, "key",
 633                    "pretty printing style key: normal raw"),
 634         OPT_BOOLEAN(0, "tui", &report.use_tui, "Use the TUI interface"),
 635         OPT_BOOLEAN(0, "gtk", &report.use_gtk, "Use the GTK2 interface"),
 636         OPT_BOOLEAN(0, "stdio", &report.use_stdio,
 637                     "Use the stdio interface"),
 638         OPT_BOOLEAN(0, "header", &report.header, "Show data header."),
 639         OPT_BOOLEAN(0, "header-only", &report.header_only,
 640                     "Show only data header."),
 641         OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
 642                    "sort by key(s): pid, comm, dso, symbol, parent, cpu, srcline, ..."
 643                    " Please refer the man page for the complete list."),
 644         OPT_STRING('F', "fields", &field_order, "key[,keys...]",
 645                    "output field(s): overhead, period, sample plus all of sort keys"),
 646         OPT_BOOLEAN(0, "showcpuutilization", &symbol_conf.show_cpu_utilization,
 647                     "Show sample percentage for different cpu modes"),
 648         OPT_STRING('p', "parent", &parent_pattern, "regex",
 649                    "regex filter to identify parent, see: '--sort parent'"),
 650         OPT_BOOLEAN('x', "exclude-other", &symbol_conf.exclude_other,
 651                     "Only display entries with parent-match"),
 652         OPT_CALLBACK_DEFAULT('g', "call-graph", &report, "output_type,min_percent[,print_limit],call_order[,branch]",
 653                      "Display callchains using output_type (graph, flat, fractal, or none) , min percent threshold, optional print limit, callchain order, key (function or address), add branches. "
 654                      "Default: fractal,0.5,callee,function", &report_parse_callchain_opt, callchain_default_opt),
 655         OPT_BOOLEAN(0, "children", &symbol_conf.cumulate_callchain,
 656                     "Accumulate callchains of children and show total overhead as well"),
 657         OPT_INTEGER(0, "max-stack", &report.max_stack,
 658                     "Set the maximum stack depth when parsing the callchain, "
 659                     "anything beyond the specified depth will be ignored. "
 660                     "Default: " __stringify(PERF_MAX_STACK_DEPTH)),
 661         OPT_BOOLEAN('G', "inverted", &report.inverted_callchain,
 662                     "alias for inverted call graph"),
 663         OPT_CALLBACK(0, "ignore-callees", NULL, "regex",
 664                    "ignore callees of these functions in call graphs",
 665                    report_parse_ignore_callees_opt),
 666         OPT_STRING('d', "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
 667                    "only consider symbols in these dsos"),
 668         OPT_STRING('c', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
 669                    "only consider symbols in these comms"),
 670         OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
 671                    "only consider these symbols"),
 672         OPT_STRING(0, "symbol-filter", &report.symbol_filter_str, "filter",
 673                    "only show symbols that (partially) match with this filter"),
 674         OPT_STRING('w', "column-widths", &symbol_conf.col_width_list_str,
 675                    "width[,width...]",
 676                    "don't try to adjust column width, use these fixed values"),
 677         OPT_STRING('t', "field-separator", &symbol_conf.field_sep, "separator",
 678                    "separator for columns, no spaces will be added between "
 679                    "columns '.' is reserved."),
 680         OPT_BOOLEAN('U', "hide-unresolved", &report.hide_unresolved,
 681                     "Only display entries resolved to a symbol"),
 682         OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory",
 683                     "Look for files with symbols relative to this directory"),
 684         OPT_STRING('C', "cpu", &report.cpu_list, "cpu",
 685                    "list of cpus to profile"),
 686         OPT_BOOLEAN('I', "show-info", &report.show_full_info,
 687                     "Display extended information about perf.data file"),
 688         OPT_BOOLEAN(0, "source", &symbol_conf.annotate_src,
 689                     "Interleave source code with assembly code (default)"),
 690         OPT_BOOLEAN(0, "asm-raw", &symbol_conf.annotate_asm_raw,
 691                     "Display raw encoding of assembly instructions (default)"),
 692         OPT_STRING('M', "disassembler-style", &disassembler_style, "disassembler style",
 693                    "Specify disassembler style (e.g. -M intel for intel syntax)"),
 694         OPT_BOOLEAN(0, "show-total-period", &symbol_conf.show_total_period,
 695                     "Show a column with the sum of periods"),
 696         OPT_BOOLEAN(0, "group", &symbol_conf.event_group,
 697                     "Show event group information together"),
 698         OPT_CALLBACK_NOOPT('b', "branch-stack", &branch_mode, "",
 699                     "use branch records for per branch histogram filling",
 700                     parse_branch_mode),
 701         OPT_BOOLEAN(0, "branch-history", &branch_call_mode,
 702                     "add last branch records to call history"),
 703         OPT_STRING(0, "objdump", &objdump_path, "path",
 704                    "objdump binary to use for disassembly and annotations"),
 705         OPT_BOOLEAN(0, "demangle", &symbol_conf.demangle,
 706                     "Disable symbol demangling"),
 707         OPT_BOOLEAN(0, "demangle-kernel", &symbol_conf.demangle_kernel,
 708                     "Enable kernel symbol demangling"),
 709         OPT_BOOLEAN(0, "mem-mode", &report.mem_mode, "mem access profile"),
 710         OPT_CALLBACK(0, "percent-limit", &report, "percent",
 711                      "Don't show entries under that percent", parse_percent_limit),
 712         OPT_CALLBACK(0, "percentage", NULL, "relative|absolute",
 713                      "how to display percentage of filtered entries", parse_filter_percentage),
 714         OPT_END()
 715         };
 716         struct perf_data_file file = {
 717                 .mode  = PERF_DATA_MODE_READ,
 718         };
 719         int ret = hists__init();
 720
 721         if (ret < 0)
 722                 return ret;
 723
 724         perf_config(report__config, &report);
 725
 726         argc = parse_options(argc, argv, options, report_usage, 0);
 727
 728         if (report.use_stdio)
 729                 use_browser = 0;
 730         else if (report.use_tui)
 731                 use_browser = 1;
 732         else if (report.use_gtk)
 733                 use_browser = 2;
 734
 735         if (report.inverted_callchain)
 736                 callchain_param.order = ORDER_CALLER;
 737
 738         if (!input_name || !strlen(input_name)) {
 739                 if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
 740                         input_name = "-";
 741                 else
 742                         input_name = "perf.data";
 743         }
 744
 745         file.path  = input_name;
 746         file.force = report.force;
 747
 748 repeat:
 749         session = perf_session__new(&file, false, &report.tool);
 750         if (session == NULL)
 751                 return -1;
 752
 753         if (report.queue_size) {
 754                 ordered_events__set_alloc_size(&session->ordered_events,
 755                                                report.queue_size);
 756         }
 757
 758         report.session = session;
 759
 760         has_br_stack = perf_header__has_feat(&session->header,
 761                                              HEADER_BRANCH_STACK);
 762
 763         /*
 764          * Branch mode is a tristate:
 765          * -1 means default, so decide based on the file having branch data.
 766          * 0/1 means the user chose a mode.
 767          */
 768         if (((branch_mode == -1 && has_br_stack) || branch_mode == 1) &&
 769             branch_call_mode == -1) {
 770                 sort__mode = SORT_MODE__BRANCH;
 771                 symbol_conf.cumulate_callchain = false;
 772         }
 773         if (branch_call_mode) {
 774                 callchain_param.key = CCKEY_ADDRESS;
 775                 callchain_param.branch_callstack = 1;
 776                 symbol_conf.use_callchain = true;
 777                 callchain_register_param(&callchain_param);
 778                 if (sort_order == NULL)
 779                         sort_order = "srcline,symbol,dso";
 780         }
 781
 782         if (report.mem_mode) {
 783                 if (sort__mode == SORT_MODE__BRANCH) {
 784                         pr_err("branch and mem mode incompatible\n");
 785                         goto error;
 786                 }
 787                 sort__mode = SORT_MODE__MEMORY;
 788                 symbol_conf.cumulate_callchain = false;
 789         }
 790
 791         if (setup_sorting() < 0) {
 792                 if (sort_order)
 793                         parse_options_usage(report_usage, options, "s", 1);
 794                 if (field_order)
 795                         parse_options_usage(sort_order ? NULL : report_usage,
 796                                             options, "F", 1);
 797                 goto error;
 798         }
 799
 800         /* Force tty output for header output. */
 801         if (report.header || report.header_only)
 802                 use_browser = 0;
 803
 804         if (strcmp(input_name, "-") != 0)
 805                 setup_browser(true);
 806         else
 807                 use_browser = 0;
 808
 809         if (report.header || report.header_only) {
 810                 perf_session__fprintf_info(session, stdout,
 811                                            report.show_full_info);
 812                 if (report.header_only)
 813                         return 0;
 814         } else if (use_browser == 0) {
 815                 fputs("# To display the perf.data header info, please use --header/--header-only options.\n#\n",
 816                       stdout);
 817         }
 818
 819         /*
 820          * Only in the TUI browser we are doing integrated annotation,
 821          * so don't allocate extra space that won't be used in the stdio
 822          * implementation.
 823          */
 824         if (ui__has_annotation()) {
 825                 symbol_conf.priv_size = sizeof(struct annotation);
 826                 machines__set_symbol_filter(&session->machines,
 827                                             symbol__annotate_init);
 828                 /*
 829                  * For searching by name on the "Browse map details".
 830                  * providing it only in verbose mode not to bloat too
 831                  * much struct symbol.
 832                  */
 833                 if (verbose) {
 834                         /*
 835                          * XXX: Need to provide a less kludgy way to ask for
 836                          * more space per symbol, the u32 is for the index on
 837                          * the ui browser.
 838                          * See symbol__browser_index.
 839                          */
 840                         symbol_conf.priv_size += sizeof(u32);
 841                         symbol_conf.sort_by_name = true;
 842                 }
 843         }
 844
 845         if (symbol__init(&session->header.env) < 0)
 846                 goto error;
 847
 848         if (argc) {
 849                 /*
 850                  * Special case: if there's an argument left then assume that
 851                  * it's a symbol filter:
 852                  */
 853                 if (argc > 1)
 854                         usage_with_options(report_usage, options);
 855
 856                 report.symbol_filter_str = argv[0];
 857         }
 858
 859         sort__setup_elide(stdout);
 860
 861         ret = __cmd_report(&report);
 862         if (ret == K_SWITCH_INPUT_DATA) {
 863                 perf_session__delete(session);
 864                 goto repeat;
 865         } else
 866                 ret = 0;
 867
 868 error:
 869         perf_session__delete(session);
 870         return ret;
 871 }