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         DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
  61 };
  62
  63 static int report__config(const char *var, const char *value, void *cb)
  64 {
  65         if (!strcmp(var, "report.group")) {
  66                 symbol_conf.event_group = perf_config_bool(var, value);
  67                 return 0;
  68         }
  69         if (!strcmp(var, "report.percent-limit")) {
  70                 struct report *rep = cb;
  71                 rep->min_percent = strtof(value, NULL);
  72                 return 0;
  73         }
  74
  75         return perf_default_config(var, value, cb);
  76 }
  77
  78 static int report__add_mem_hist_entry(struct perf_tool *tool, struct addr_location *al,
  79                                       struct perf_sample *sample, struct perf_evsel *evsel)
  80 {
  81         struct report *rep = container_of(tool, struct report, tool);
  82         struct symbol *parent = NULL;
  83         struct hist_entry *he;
  84         struct mem_info *mi, *mx;
  85         uint64_t cost;
  86         int err = sample__resolve_callchain(sample, &parent, evsel, al, rep->max_stack);
  87
  88         if (err)
  89                 return err;
  90
  91         mi = sample__resolve_mem(sample, al);
  92         if (!mi)
  93                 return -ENOMEM;
  94
  95         if (rep->hide_unresolved && !al->sym)
  96                 return 0;
  97
  98         cost = sample->weight;
  99         if (!cost)
 100                 cost = 1;
 101
 102         /*
 103          * must pass period=weight in order to get the correct
 104          * sorting from hists__collapse_resort() which is solely
 105          * based on periods. We want sorting be done on nr_events * weight
 106          * and this is indirectly achieved by passing period=weight here
 107          * and the he_stat__add_period() function.
 108          */
 109         he = __hists__add_entry(&evsel->hists, al, parent, NULL, mi,
 110                                 cost, cost, 0);
 111         if (!he)
 112                 return -ENOMEM;
 113
 114         err = hist_entry__inc_addr_samples(he, evsel->idx, al->addr);
 115         if (err)
 116                 goto out;
 117
 118         mx = he->mem_info;
 119         err = addr_map_symbol__inc_samples(&mx->daddr, evsel->idx);
 120         if (err)
 121                 goto out;
 122
 123         evsel->hists.stats.total_period += cost;
 124         hists__inc_nr_events(&evsel->hists, PERF_RECORD_SAMPLE);
 125         err = hist_entry__append_callchain(he, sample);
 126 out:
 127         return err;
 128 }
 129
 130 static int report__add_branch_hist_entry(struct perf_tool *tool, struct addr_location *al,
 131                                          struct perf_sample *sample, struct perf_evsel *evsel)
 132 {
 133         struct report *rep = container_of(tool, struct report, tool);
 134         struct symbol *parent = NULL;
 135         unsigned i;
 136         struct hist_entry *he;
 137         struct branch_info *bi, *bx;
 138         int err = sample__resolve_callchain(sample, &parent, evsel, al, rep->max_stack);
 139
 140         if (err)
 141                 return err;
 142
 143         bi = sample__resolve_bstack(sample, al);
 144         if (!bi)
 145                 return -ENOMEM;
 146
 147         for (i = 0; i < sample->branch_stack->nr; i++) {
 148                 if (rep->hide_unresolved && !(bi[i].from.sym && bi[i].to.sym))
 149                         continue;
 150
 151                 err = -ENOMEM;
 152
 153                 /* overwrite the 'al' to branch-to info */
 154                 al->map = bi[i].to.map;
 155                 al->sym = bi[i].to.sym;
 156                 al->addr = bi[i].to.addr;
 157                 /*
 158                  * The report shows the percentage of total branches captured
 159                  * and not events sampled. Thus we use a pseudo period of 1.
 160                  */
 161                 he = __hists__add_entry(&evsel->hists, al, parent, &bi[i], NULL,
 162                                         1, 1, 0);
 163                 if (he) {
 164                         bx = he->branch_info;
 165                         err = addr_map_symbol__inc_samples(&bx->from, evsel->idx);
 166                         if (err)
 167                                 goto out;
 168
 169                         err = addr_map_symbol__inc_samples(&bx->to, evsel->idx);
 170                         if (err)
 171                                 goto out;
 172
 173                         evsel->hists.stats.total_period += 1;
 174                         hists__inc_nr_events(&evsel->hists, PERF_RECORD_SAMPLE);
 175                 } else
 176                         goto out;
 177         }
 178         err = 0;
 179 out:
 180         free(bi);
 181         return err;
 182 }
 183
 184 static int report__add_hist_entry(struct perf_tool *tool, struct perf_evsel *evsel,
 185                                   struct addr_location *al, struct perf_sample *sample)
 186 {
 187         struct report *rep = container_of(tool, struct report, tool);
 188         struct symbol *parent = NULL;
 189         struct hist_entry *he;
 190         int err = sample__resolve_callchain(sample, &parent, evsel, al, rep->max_stack);
 191
 192         if (err)
 193                 return err;
 194
 195         he = __hists__add_entry(&evsel->hists, al, parent, NULL, NULL,
 196                                 sample->period, sample->weight,
 197                                 sample->transaction);
 198         if (he == NULL)
 199                 return -ENOMEM;
 200
 201         err = hist_entry__append_callchain(he, sample);
 202         if (err)
 203                 goto out;
 204
 205         err = hist_entry__inc_addr_samples(he, evsel->idx, al->addr);
 206         evsel->hists.stats.total_period += sample->period;
 207         hists__inc_nr_events(&evsel->hists, PERF_RECORD_SAMPLE);
 208 out:
 209         return err;
 210 }
 211
 212
 213 static int process_sample_event(struct perf_tool *tool,
 214                                 union perf_event *event,
 215                                 struct perf_sample *sample,
 216                                 struct perf_evsel *evsel,
 217                                 struct machine *machine)
 218 {
 219         struct report *rep = container_of(tool, struct report, tool);
 220         struct addr_location al;
 221         int ret;
 222
 223         if (perf_event__preprocess_sample(event, machine, &al, sample) < 0) {
 224                 pr_debug("problem processing %d event, skipping it.\n",
 225                          event->header.type);
 226                 return -1;
 227         }
 228
 229         if (al.filtered || (rep->hide_unresolved && al.sym == NULL))
 230                 return 0;
 231
 232         if (rep->cpu_list && !test_bit(sample->cpu, rep->cpu_bitmap))
 233                 return 0;
 234
 235         if (sort__mode == SORT_MODE__BRANCH) {
 236                 ret = report__add_branch_hist_entry(tool, &al, sample, evsel);
 237                 if (ret < 0)
 238                         pr_debug("problem adding lbr entry, skipping event\n");
 239         } else if (rep->mem_mode == 1) {
 240                 ret = report__add_mem_hist_entry(tool, &al, sample, evsel);
 241                 if (ret < 0)
 242                         pr_debug("problem adding mem entry, skipping event\n");
 243         } else {
 244                 if (al.map != NULL)
 245                         al.map->dso->hit = 1;
 246
 247                 ret = report__add_hist_entry(tool, evsel, &al, sample);
 248                 if (ret < 0)
 249                         pr_debug("problem incrementing symbol period, skipping event\n");
 250         }
 251         return ret;
 252 }
 253
 254 static int process_read_event(struct perf_tool *tool,
 255                               union perf_event *event,
 256                               struct perf_sample *sample __maybe_unused,
 257                               struct perf_evsel *evsel,
 258                               struct machine *machine __maybe_unused)
 259 {
 260         struct report *rep = container_of(tool, struct report, tool);
 261
 262         if (rep->show_threads) {
 263                 const char *name = evsel ? perf_evsel__name(evsel) : "unknown";
 264                 perf_read_values_add_value(&rep->show_threads_values,
 265                                            event->read.pid, event->read.tid,
 266                                            event->read.id,
 267                                            name,
 268                                            event->read.value);
 269         }
 270
 271         dump_printf(": %d %d %s %" PRIu64 "\n", event->read.pid, event->read.tid,
 272                     evsel ? perf_evsel__name(evsel) : "FAIL",
 273                     event->read.value);
 274
 275         return 0;
 276 }
 277
 278 /* For pipe mode, sample_type is not currently set */
 279 static int report__setup_sample_type(struct report *rep)
 280 {
 281         struct perf_session *session = rep->session;
 282         u64 sample_type = perf_evlist__combined_sample_type(session->evlist);
 283         bool is_pipe = perf_data_file__is_pipe(session->file);
 284
 285         if (!is_pipe && !(sample_type & PERF_SAMPLE_CALLCHAIN)) {
 286                 if (sort__has_parent) {
 287                         ui__error("Selected --sort parent, but no "
 288                                     "callchain data. Did you call "
 289                                     "'perf record' without -g?\n");
 290                         return -EINVAL;
 291                 }
 292                 if (symbol_conf.use_callchain) {
 293                         ui__error("Selected -g but no callchain data. Did "
 294                                     "you call 'perf record' without -g?\n");
 295                         return -1;
 296                 }
 297         } else if (!rep->dont_use_callchains &&
 298                    callchain_param.mode != CHAIN_NONE &&
 299                    !symbol_conf.use_callchain) {
 300                         symbol_conf.use_callchain = true;
 301                         if (callchain_register_param(&callchain_param) < 0) {
 302                                 ui__error("Can't register callchain params.\n");
 303                                 return -EINVAL;
 304                         }
 305         }
 306
 307         if (sort__mode == SORT_MODE__BRANCH) {
 308                 if (!is_pipe &&
 309                     !(sample_type & PERF_SAMPLE_BRANCH_STACK)) {
 310                         ui__error("Selected -b but no branch data. "
 311                                   "Did you call perf record without -b?\n");
 312                         return -1;
 313                 }
 314         }
 315
 316         return 0;
 317 }
 318
 319 static void sig_handler(int sig __maybe_unused)
 320 {
 321         session_done = 1;
 322 }
 323
 324 static size_t hists__fprintf_nr_sample_events(struct hists *hists, struct report *rep,
 325                                               const char *evname, FILE *fp)
 326 {
 327         size_t ret;
 328         char unit;
 329         unsigned long nr_samples = hists->stats.nr_events[PERF_RECORD_SAMPLE];
 330         u64 nr_events = hists->stats.total_period;
 331         struct perf_evsel *evsel = hists_to_evsel(hists);
 332         char buf[512];
 333         size_t size = sizeof(buf);
 334
 335         if (perf_evsel__is_group_event(evsel)) {
 336                 struct perf_evsel *pos;
 337
 338                 perf_evsel__group_desc(evsel, buf, size);
 339                 evname = buf;
 340
 341                 for_each_group_member(pos, evsel) {
 342                         nr_samples += pos->hists.stats.nr_events[PERF_RECORD_SAMPLE];
 343                         nr_events += pos->hists.stats.total_period;
 344                 }
 345         }
 346
 347         nr_samples = convert_unit(nr_samples, &unit);
 348         ret = fprintf(fp, "# Samples: %lu%c", nr_samples, unit);
 349         if (evname != NULL)
 350                 ret += fprintf(fp, " of event '%s'", evname);
 351
 352         if (rep->mem_mode) {
 353                 ret += fprintf(fp, "\n# Total weight : %" PRIu64, nr_events);
 354                 ret += fprintf(fp, "\n# Sort order   : %s", sort_order);
 355         } else
 356                 ret += fprintf(fp, "\n# Event count (approx.): %" PRIu64, nr_events);
 357         return ret + fprintf(fp, "\n#\n");
 358 }
 359
 360 static int perf_evlist__tty_browse_hists(struct perf_evlist *evlist,
 361                                          struct report *rep,
 362                                          const char *help)
 363 {
 364         struct perf_evsel *pos;
 365
 366         evlist__for_each(evlist, pos) {
 367                 struct hists *hists = &pos->hists;
 368                 const char *evname = perf_evsel__name(pos);
 369
 370                 if (symbol_conf.event_group &&
 371                     !perf_evsel__is_group_leader(pos))
 372                         continue;
 373
 374                 hists__fprintf_nr_sample_events(hists, rep, evname, stdout);
 375                 hists__fprintf(hists, true, 0, 0, rep->min_percent, stdout);
 376                 fprintf(stdout, "\n\n");
 377         }
 378
 379         if (sort_order == default_sort_order &&
 380             parent_pattern == default_parent_pattern) {
 381                 fprintf(stdout, "#\n# (%s)\n#\n", help);
 382
 383                 if (rep->show_threads) {
 384                         bool style = !strcmp(rep->pretty_printing_style, "raw");
 385                         perf_read_values_display(stdout, &rep->show_threads_values,
 386                                                  style);
 387                         perf_read_values_destroy(&rep->show_threads_values);
 388                 }
 389         }
 390
 391         return 0;
 392 }
 393
 394 static void report__warn_kptr_restrict(const struct report *rep)
 395 {
 396         struct map *kernel_map = rep->session->machines.host.vmlinux_maps[MAP__FUNCTION];
 397         struct kmap *kernel_kmap = map__kmap(kernel_map);
 398
 399         if (kernel_map == NULL ||
 400             (kernel_map->dso->hit &&
 401              (kernel_kmap->ref_reloc_sym == NULL ||
 402               kernel_kmap->ref_reloc_sym->addr == 0))) {
 403                 const char *desc =
 404                     "As no suitable kallsyms nor vmlinux was found, kernel samples\n"
 405                     "can't be resolved.";
 406
 407                 if (kernel_map) {
 408                         const struct dso *kdso = kernel_map->dso;
 409                         if (!RB_EMPTY_ROOT(&kdso->symbols[MAP__FUNCTION])) {
 410                                 desc = "If some relocation was applied (e.g. "
 411                                        "kexec) symbols may be misresolved.";
 412                         }
 413                 }
 414
 415                 ui__warning(
 416 "Kernel address maps (/proc/{kallsyms,modules}) were restricted.\n\n"
 417 "Check /proc/sys/kernel/kptr_restrict before running 'perf record'.\n\n%s\n\n"
 418 "Samples in kernel modules can't be resolved as well.\n\n",
 419                 desc);
 420         }
 421 }
 422
 423 static int report__gtk_browse_hists(struct report *rep, const char *help)
 424 {
 425         int (*hist_browser)(struct perf_evlist *evlist, const char *help,
 426                             struct hist_browser_timer *timer, float min_pcnt);
 427
 428         hist_browser = dlsym(perf_gtk_handle, "perf_evlist__gtk_browse_hists");
 429
 430         if (hist_browser == NULL) {
 431                 ui__error("GTK browser not found!\n");
 432                 return -1;
 433         }
 434
 435         return hist_browser(rep->session->evlist, help, NULL, rep->min_percent);
 436 }
 437
 438 static int report__browse_hists(struct report *rep)
 439 {
 440         int ret;
 441         struct perf_session *session = rep->session;
 442         struct perf_evlist *evlist = session->evlist;
 443         const char *help = "For a higher level overview, try: perf report --sort comm,dso";
 444
 445         switch (use_browser) {
 446         case 1:
 447                 ret = perf_evlist__tui_browse_hists(evlist, help, NULL,
 448                                                     rep->min_percent,
 449                                                     &session->header.env);
 450                 /*
 451                  * Usually "ret" is the last pressed key, and we only
 452                  * care if the key notifies us to switch data file.
 453                  */
 454                 if (ret != K_SWITCH_INPUT_DATA)
 455                         ret = 0;
 456                 break;
 457         case 2:
 458                 ret = report__gtk_browse_hists(rep, help);
 459                 break;
 460         default:
 461                 ret = perf_evlist__tty_browse_hists(evlist, rep, help);
 462                 break;
 463         }
 464
 465         return ret;
 466 }
 467
 468 static u64 report__collapse_hists(struct report *rep)
 469 {
 470         struct ui_progress prog;
 471         struct perf_evsel *pos;
 472         u64 nr_samples = 0;
 473         /*
 474          * Count number of histogram entries to use when showing progress,
 475          * reusing nr_samples variable.
 476          */
 477         evlist__for_each(rep->session->evlist, pos)
 478                 nr_samples += pos->hists.nr_entries;
 479
 480         ui_progress__init(&prog, nr_samples, "Merging related events...");
 481         /*
 482          * Count total number of samples, will be used to check if this
 483          * session had any.
 484          */
 485         nr_samples = 0;
 486
 487         evlist__for_each(rep->session->evlist, pos) {
 488                 struct hists *hists = &pos->hists;
 489
 490                 if (pos->idx == 0)
 491                         hists->symbol_filter_str = rep->symbol_filter_str;
 492
 493                 hists__collapse_resort(hists, &prog);
 494                 nr_samples += hists->stats.nr_events[PERF_RECORD_SAMPLE];
 495
 496                 /* Non-group events are considered as leader */
 497                 if (symbol_conf.event_group &&
 498                     !perf_evsel__is_group_leader(pos)) {
 499                         struct hists *leader_hists = &pos->leader->hists;
 500
 501                         hists__match(leader_hists, hists);
 502                         hists__link(leader_hists, hists);
 503                 }
 504         }
 505
 506         ui_progress__finish();
 507
 508         return nr_samples;
 509 }
 510
 511 static int __cmd_report(struct report *rep)
 512 {
 513         int ret;
 514         u64 nr_samples;
 515         struct perf_session *session = rep->session;
 516         struct perf_evsel *pos;
 517         struct perf_data_file *file = session->file;
 518
 519         signal(SIGINT, sig_handler);
 520
 521         if (rep->cpu_list) {
 522                 ret = perf_session__cpu_bitmap(session, rep->cpu_list,
 523                                                rep->cpu_bitmap);
 524                 if (ret)
 525                         return ret;
 526         }
 527
 528         if (rep->show_threads)
 529                 perf_read_values_init(&rep->show_threads_values);
 530
 531         ret = report__setup_sample_type(rep);
 532         if (ret)
 533                 return ret;
 534
 535         ret = perf_session__process_events(session, &rep->tool);
 536         if (ret)
 537                 return ret;
 538
 539         report__warn_kptr_restrict(rep);
 540
 541         if (use_browser == 0) {
 542                 if (verbose > 3)
 543                         perf_session__fprintf(session, stdout);
 544
 545                 if (verbose > 2)
 546                         perf_session__fprintf_dsos(session, stdout);
 547
 548                 if (dump_trace) {
 549                         perf_session__fprintf_nr_events(session, stdout);
 550                         return 0;
 551                 }
 552         }
 553
 554         nr_samples = report__collapse_hists(rep);
 555
 556         if (session_done())
 557                 return 0;
 558
 559         if (nr_samples == 0) {
 560                 ui__error("The %s file has no samples!\n", file->path);
 561                 return 0;
 562         }
 563
 564         evlist__for_each(session->evlist, pos)
 565                 hists__output_resort(&pos->hists);
 566
 567         return report__browse_hists(rep);
 568 }
 569
 570 static int
 571 parse_callchain_opt(const struct option *opt, const char *arg, int unset)
 572 {
 573         struct report *rep = (struct report *)opt->value;
 574         char *tok, *tok2;
 575         char *endptr;
 576
 577         /*
 578          * --no-call-graph
 579          */
 580         if (unset) {
 581                 rep->dont_use_callchains = true;
 582                 return 0;
 583         }
 584
 585         symbol_conf.use_callchain = true;
 586
 587         if (!arg)
 588                 return 0;
 589
 590         tok = strtok((char *)arg, ",");
 591         if (!tok)
 592                 return -1;
 593
 594         /* get the output mode */
 595         if (!strncmp(tok, "graph", strlen(arg)))
 596                 callchain_param.mode = CHAIN_GRAPH_ABS;
 597
 598         else if (!strncmp(tok, "flat", strlen(arg)))
 599                 callchain_param.mode = CHAIN_FLAT;
 600
 601         else if (!strncmp(tok, "fractal", strlen(arg)))
 602                 callchain_param.mode = CHAIN_GRAPH_REL;
 603
 604         else if (!strncmp(tok, "none", strlen(arg))) {
 605                 callchain_param.mode = CHAIN_NONE;
 606                 symbol_conf.use_callchain = false;
 607
 608                 return 0;
 609         }
 610
 611         else
 612                 return -1;
 613
 614         /* get the min percentage */
 615         tok = strtok(NULL, ",");
 616         if (!tok)
 617                 goto setup;
 618
 619         callchain_param.min_percent = strtod(tok, &endptr);
 620         if (tok == endptr)
 621                 return -1;
 622
 623         /* get the print limit */
 624         tok2 = strtok(NULL, ",");
 625         if (!tok2)
 626                 goto setup;
 627
 628         if (tok2[0] != 'c') {
 629                 callchain_param.print_limit = strtoul(tok2, &endptr, 0);
 630                 tok2 = strtok(NULL, ",");
 631                 if (!tok2)
 632                         goto setup;
 633         }
 634
 635         /* get the call chain order */
 636         if (!strncmp(tok2, "caller", strlen("caller")))
 637                 callchain_param.order = ORDER_CALLER;
 638         else if (!strncmp(tok2, "callee", strlen("callee")))
 639                 callchain_param.order = ORDER_CALLEE;
 640         else
 641                 return -1;
 642
 643         /* Get the sort key */
 644         tok2 = strtok(NULL, ",");
 645         if (!tok2)
 646                 goto setup;
 647         if (!strncmp(tok2, "function", strlen("function")))
 648                 callchain_param.key = CCKEY_FUNCTION;
 649         else if (!strncmp(tok2, "address", strlen("address")))
 650                 callchain_param.key = CCKEY_ADDRESS;
 651         else
 652                 return -1;
 653 setup:
 654         if (callchain_register_param(&callchain_param) < 0) {
 655                 pr_err("Can't register callchain params\n");
 656                 return -1;
 657         }
 658         return 0;
 659 }
 660
 661 int
 662 report_parse_ignore_callees_opt(const struct option *opt __maybe_unused,
 663                                 const char *arg, int unset __maybe_unused)
 664 {
 665         if (arg) {
 666                 int err = regcomp(&ignore_callees_regex, arg, REG_EXTENDED);
 667                 if (err) {
 668                         char buf[BUFSIZ];
 669                         regerror(err, &ignore_callees_regex, buf, sizeof(buf));
 670                         pr_err("Invalid --ignore-callees regex: %s\n%s", arg, buf);
 671                         return -1;
 672                 }
 673                 have_ignore_callees = 1;
 674         }
 675
 676         return 0;
 677 }
 678
 679 static int
 680 parse_branch_mode(const struct option *opt __maybe_unused,
 681                   const char *str __maybe_unused, int unset)
 682 {
 683         int *branch_mode = opt->value;
 684
 685         *branch_mode = !unset;
 686         return 0;
 687 }
 688
 689 static int
 690 parse_percent_limit(const struct option *opt, const char *str,
 691                     int unset __maybe_unused)
 692 {
 693         struct report *rep = opt->value;
 694
 695         rep->min_percent = strtof(str, NULL);
 696         return 0;
 697 }
 698
 699 int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused)
 700 {
 701         struct perf_session *session;
 702         struct stat st;
 703         bool has_br_stack = false;
 704         int branch_mode = -1;
 705         int ret = -1;
 706         char callchain_default_opt[] = "fractal,0.5,callee";
 707         const char * const report_usage[] = {
 708                 "perf report [<options>]",
 709                 NULL
 710         };
 711         struct report report = {
 712                 .tool = {
 713                         .sample          = process_sample_event,
 714                         .mmap            = perf_event__process_mmap,
 715                         .mmap2           = perf_event__process_mmap2,
 716                         .comm            = perf_event__process_comm,
 717                         .exit            = perf_event__process_exit,
 718                         .fork            = perf_event__process_fork,
 719                         .lost            = perf_event__process_lost,
 720                         .read            = process_read_event,
 721                         .attr            = perf_event__process_attr,
 722                         .tracing_data    = perf_event__process_tracing_data,
 723                         .build_id        = perf_event__process_build_id,
 724                         .ordered_samples = true,
 725                         .ordering_requires_timestamps = true,
 726                 },
 727                 .max_stack               = PERF_MAX_STACK_DEPTH,
 728                 .pretty_printing_style   = "normal",
 729         };
 730         const struct option options[] = {
 731         OPT_STRING('i', "input", &input_name, "file",
 732                     "input file name"),
 733         OPT_INCR('v', "verbose", &verbose,
 734                     "be more verbose (show symbol address, etc)"),
 735         OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
 736                     "dump raw trace in ASCII"),
 737         OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
 738                    "file", "vmlinux pathname"),
 739         OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name,
 740                    "file", "kallsyms pathname"),
 741         OPT_BOOLEAN('f', "force", &report.force, "don't complain, do it"),
 742         OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
 743                     "load module symbols - WARNING: use only with -k and LIVE kernel"),
 744         OPT_BOOLEAN('n', "show-nr-samples", &symbol_conf.show_nr_samples,
 745                     "Show a column with the number of samples"),
 746         OPT_BOOLEAN('T', "threads", &report.show_threads,
 747                     "Show per-thread event counters"),
 748         OPT_STRING(0, "pretty", &report.pretty_printing_style, "key",
 749                    "pretty printing style key: normal raw"),
 750         OPT_BOOLEAN(0, "tui", &report.use_tui, "Use the TUI interface"),
 751         OPT_BOOLEAN(0, "gtk", &report.use_gtk, "Use the GTK2 interface"),
 752         OPT_BOOLEAN(0, "stdio", &report.use_stdio,
 753                     "Use the stdio interface"),
 754         OPT_BOOLEAN(0, "header", &report.header, "Show data header."),
 755         OPT_BOOLEAN(0, "header-only", &report.header_only,
 756                     "Show only data header."),
 757         OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
 758                    "sort by key(s): pid, comm, dso, symbol, parent, cpu, srcline,"
 759                    " dso_to, dso_from, symbol_to, symbol_from, mispredict,"
 760                    " weight, local_weight, mem, symbol_daddr, dso_daddr, tlb, "
 761                    "snoop, locked, abort, in_tx, transaction"),
 762         OPT_BOOLEAN(0, "showcpuutilization", &symbol_conf.show_cpu_utilization,
 763                     "Show sample percentage for different cpu modes"),
 764         OPT_STRING('p', "parent", &parent_pattern, "regex",
 765                    "regex filter to identify parent, see: '--sort parent'"),
 766         OPT_BOOLEAN('x', "exclude-other", &symbol_conf.exclude_other,
 767                     "Only display entries with parent-match"),
 768         OPT_CALLBACK_DEFAULT('g', "call-graph", &report, "output_type,min_percent[,print_limit],call_order",
 769                      "Display callchains using output_type (graph, flat, fractal, or none) , min percent threshold, optional print limit, callchain order, key (function or address). "
 770                      "Default: fractal,0.5,callee,function", &parse_callchain_opt, callchain_default_opt),
 771         OPT_INTEGER(0, "max-stack", &report.max_stack,
 772                     "Set the maximum stack depth when parsing the callchain, "
 773                     "anything beyond the specified depth will be ignored. "
 774                     "Default: " __stringify(PERF_MAX_STACK_DEPTH)),
 775         OPT_BOOLEAN('G', "inverted", &report.inverted_callchain,
 776                     "alias for inverted call graph"),
 777         OPT_CALLBACK(0, "ignore-callees", NULL, "regex",
 778                    "ignore callees of these functions in call graphs",
 779                    report_parse_ignore_callees_opt),
 780         OPT_STRING('d', "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
 781                    "only consider symbols in these dsos"),
 782         OPT_STRING('c', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
 783                    "only consider symbols in these comms"),
 784         OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
 785                    "only consider these symbols"),
 786         OPT_STRING(0, "symbol-filter", &report.symbol_filter_str, "filter",
 787                    "only show symbols that (partially) match with this filter"),
 788         OPT_STRING('w', "column-widths", &symbol_conf.col_width_list_str,
 789                    "width[,width...]",
 790                    "don't try to adjust column width, use these fixed values"),
 791         OPT_STRING('t', "field-separator", &symbol_conf.field_sep, "separator",
 792                    "separator for columns, no spaces will be added between "
 793                    "columns '.' is reserved."),
 794         OPT_BOOLEAN('U', "hide-unresolved", &report.hide_unresolved,
 795                     "Only display entries resolved to a symbol"),
 796         OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory",
 797                     "Look for files with symbols relative to this directory"),
 798         OPT_STRING('C', "cpu", &report.cpu_list, "cpu",
 799                    "list of cpus to profile"),
 800         OPT_BOOLEAN('I', "show-info", &report.show_full_info,
 801                     "Display extended information about perf.data file"),
 802         OPT_BOOLEAN(0, "source", &symbol_conf.annotate_src,
 803                     "Interleave source code with assembly code (default)"),
 804         OPT_BOOLEAN(0, "asm-raw", &symbol_conf.annotate_asm_raw,
 805                     "Display raw encoding of assembly instructions (default)"),
 806         OPT_STRING('M', "disassembler-style", &disassembler_style, "disassembler style",
 807                    "Specify disassembler style (e.g. -M intel for intel syntax)"),
 808         OPT_BOOLEAN(0, "show-total-period", &symbol_conf.show_total_period,
 809                     "Show a column with the sum of periods"),
 810         OPT_BOOLEAN(0, "group", &symbol_conf.event_group,
 811                     "Show event group information together"),
 812         OPT_CALLBACK_NOOPT('b', "branch-stack", &branch_mode, "",
 813                     "use branch records for histogram filling", parse_branch_mode),
 814         OPT_STRING(0, "objdump", &objdump_path, "path",
 815                    "objdump binary to use for disassembly and annotations"),
 816         OPT_BOOLEAN(0, "demangle", &symbol_conf.demangle,
 817                     "Disable symbol demangling"),
 818         OPT_BOOLEAN(0, "mem-mode", &report.mem_mode, "mem access profile"),
 819         OPT_CALLBACK(0, "percent-limit", &report, "percent",
 820                      "Don't show entries under that percent", parse_percent_limit),
 821         OPT_END()
 822         };
 823         struct perf_data_file file = {
 824                 .mode  = PERF_DATA_MODE_READ,
 825         };
 826
 827         perf_config(report__config, &report);
 828
 829         argc = parse_options(argc, argv, options, report_usage, 0);
 830
 831         if (report.use_stdio)
 832                 use_browser = 0;
 833         else if (report.use_tui)
 834                 use_browser = 1;
 835         else if (report.use_gtk)
 836                 use_browser = 2;
 837
 838         if (report.inverted_callchain)
 839                 callchain_param.order = ORDER_CALLER;
 840
 841         if (!input_name || !strlen(input_name)) {
 842                 if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
 843                         input_name = "-";
 844                 else
 845                         input_name = "perf.data";
 846         }
 847
 848         file.path  = input_name;
 849         file.force = report.force;
 850
 851 repeat:
 852         session = perf_session__new(&file, false, &report.tool);
 853         if (session == NULL)
 854                 return -ENOMEM;
 855
 856         report.session = session;
 857
 858         has_br_stack = perf_header__has_feat(&session->header,
 859                                              HEADER_BRANCH_STACK);
 860
 861         if (branch_mode == -1 && has_br_stack)
 862                 sort__mode = SORT_MODE__BRANCH;
 863
 864         /* sort__mode could be NORMAL if --no-branch-stack */
 865         if (sort__mode == SORT_MODE__BRANCH) {
 866                 /*
 867                  * if no sort_order is provided, then specify
 868                  * branch-mode specific order
 869                  */
 870                 if (sort_order == default_sort_order)
 871                         sort_order = "comm,dso_from,symbol_from,"
 872                                      "dso_to,symbol_to";
 873
 874         }
 875         if (report.mem_mode) {
 876                 if (sort__mode == SORT_MODE__BRANCH) {
 877                         pr_err("branch and mem mode incompatible\n");
 878                         goto error;
 879                 }
 880                 sort__mode = SORT_MODE__MEMORY;
 881
 882                 /*
 883                  * if no sort_order is provided, then specify
 884                  * branch-mode specific order
 885                  */
 886                 if (sort_order == default_sort_order)
 887                         sort_order = "local_weight,mem,sym,dso,symbol_daddr,dso_daddr,snoop,tlb,locked";
 888         }
 889
 890         if (setup_sorting() < 0) {
 891                 parse_options_usage(report_usage, options, "s", 1);
 892                 goto error;
 893         }
 894
 895         if (parent_pattern != default_parent_pattern) {
 896                 if (sort_dimension__add("parent") < 0)
 897                         goto error;
 898         }
 899
 900         /* Force tty output for header output. */
 901         if (report.header || report.header_only)
 902                 use_browser = 0;
 903
 904         if (strcmp(input_name, "-") != 0)
 905                 setup_browser(true);
 906         else {
 907                 use_browser = 0;
 908                 perf_hpp__init();
 909         }
 910
 911         if (report.header || report.header_only) {
 912                 perf_session__fprintf_info(session, stdout,
 913                                            report.show_full_info);
 914                 if (report.header_only)
 915                         return 0;
 916         } else if (use_browser == 0) {
 917                 fputs("# To display the perf.data header info, please use --header/--header-only options.\n#\n",
 918                       stdout);
 919         }
 920
 921         /*
 922          * Only in the TUI browser we are doing integrated annotation,
 923          * so don't allocate extra space that won't be used in the stdio
 924          * implementation.
 925          */
 926         if (use_browser == 1 && sort__has_sym) {
 927                 symbol_conf.priv_size = sizeof(struct annotation);
 928                 machines__set_symbol_filter(&session->machines,
 929                                             symbol__annotate_init);
 930                 /*
 931                  * For searching by name on the "Browse map details".
 932                  * providing it only in verbose mode not to bloat too
 933                  * much struct symbol.
 934                  */
 935                 if (verbose) {
 936                         /*
 937                          * XXX: Need to provide a less kludgy way to ask for
 938                          * more space per symbol, the u32 is for the index on
 939                          * the ui browser.
 940                          * See symbol__browser_index.
 941                          */
 942                         symbol_conf.priv_size += sizeof(u32);
 943                         symbol_conf.sort_by_name = true;
 944                 }
 945         }
 946
 947         if (symbol__init() < 0)
 948                 goto error;
 949
 950         if (argc) {
 951                 /*
 952                  * Special case: if there's an argument left then assume that
 953                  * it's a symbol filter:
 954                  */
 955                 if (argc > 1)
 956                         usage_with_options(report_usage, options);
 957
 958                 report.symbol_filter_str = argv[0];
 959         }
 960
 961         sort__setup_elide(stdout);
 962
 963         ret = __cmd_report(&report);
 964         if (ret == K_SWITCH_INPUT_DATA) {
 965                 perf_session__delete(session);
 966                 goto repeat;
 967         } else
 968                 ret = 0;
 969
 970 error:
 971         perf_session__delete(session);
 972         return ret;
 973 }