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 report *rep, struct addr_location *al,
  79                                       struct perf_sample *sample, struct perf_evsel *evsel)
  80 {
  81         struct symbol *parent = NULL;
  82         struct hist_entry *he;
  83         struct mem_info *mi, *mx;
  84         uint64_t cost;
  85         int err = sample__resolve_callchain(sample, &parent, evsel, al, rep->max_stack);
  86
  87         if (err)
  88                 return err;
  89
  90         mi = sample__resolve_mem(sample, al);
  91         if (!mi)
  92                 return -ENOMEM;
  93
  94         if (rep->hide_unresolved && !al->sym)
  95                 return 0;
  96
  97         cost = sample->weight;
  98         if (!cost)
  99                 cost = 1;
 100
 101         /*
 102          * must pass period=weight in order to get the correct
 103          * sorting from hists__collapse_resort() which is solely
 104          * based on periods. We want sorting be done on nr_events * weight
 105          * and this is indirectly achieved by passing period=weight here
 106          * and the he_stat__add_period() function.
 107          */
 108         he = __hists__add_entry(&evsel->hists, al, parent, NULL, mi,
 109                                 cost, cost, 0);
 110         if (!he)
 111                 return -ENOMEM;
 112
 113         if (ui__has_annotation()) {
 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
 124         evsel->hists.stats.total_period += cost;
 125         hists__inc_nr_events(&evsel->hists, PERF_RECORD_SAMPLE);
 126         err = hist_entry__append_callchain(he, sample);
 127 out:
 128         return err;
 129 }
 130
 131 static int report__add_branch_hist_entry(struct report *rep, struct addr_location *al,
 132                                          struct perf_sample *sample, struct perf_evsel *evsel)
 133 {
 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                         if (ui__has_annotation()) {
 165                                 bx = he->branch_info;
 166                                 err = addr_map_symbol__inc_samples(&bx->from,
 167                                                                    evsel->idx);
 168                                 if (err)
 169                                         goto out;
 170
 171                                 err = addr_map_symbol__inc_samples(&bx->to,
 172                                                                    evsel->idx);
 173                                 if (err)
 174                                         goto out;
 175                         }
 176
 177                         evsel->hists.stats.total_period += 1;
 178                         hists__inc_nr_events(&evsel->hists, PERF_RECORD_SAMPLE);
 179                 } else
 180                         goto out;
 181         }
 182         err = 0;
 183 out:
 184         free(bi);
 185         return err;
 186 }
 187
 188 static int report__add_hist_entry(struct report *rep, struct perf_evsel *evsel,
 189                                   struct addr_location *al, struct perf_sample *sample)
 190 {
 191         struct symbol *parent = NULL;
 192         struct hist_entry *he;
 193         int err = sample__resolve_callchain(sample, &parent, evsel, al, rep->max_stack);
 194
 195         if (err)
 196                 return err;
 197
 198         he = __hists__add_entry(&evsel->hists, al, parent, NULL, NULL,
 199                                 sample->period, sample->weight,
 200                                 sample->transaction);
 201         if (he == NULL)
 202                 return -ENOMEM;
 203
 204         err = hist_entry__append_callchain(he, sample);
 205         if (err)
 206                 goto out;
 207
 208         if (ui__has_annotation())
 209                 err = hist_entry__inc_addr_samples(he, evsel->idx, al->addr);
 210
 211         evsel->hists.stats.total_period += sample->period;
 212         hists__inc_nr_events(&evsel->hists, PERF_RECORD_SAMPLE);
 213 out:
 214         return err;
 215 }
 216
 217
 218 static int process_sample_event(struct perf_tool *tool,
 219                                 union perf_event *event,
 220                                 struct perf_sample *sample,
 221                                 struct perf_evsel *evsel,
 222                                 struct machine *machine)
 223 {
 224         struct report *rep = container_of(tool, struct report, tool);
 225         struct addr_location al;
 226         int ret;
 227
 228         if (perf_event__preprocess_sample(event, machine, &al, sample) < 0) {
 229                 pr_debug("problem processing %d event, skipping it.\n",
 230                          event->header.type);
 231                 return -1;
 232         }
 233
 234         if (rep->hide_unresolved && al.sym == NULL)
 235                 return 0;
 236
 237         if (rep->cpu_list && !test_bit(sample->cpu, rep->cpu_bitmap))
 238                 return 0;
 239
 240         if (sort__mode == SORT_MODE__BRANCH) {
 241                 ret = report__add_branch_hist_entry(rep, &al, sample, evsel);
 242                 if (ret < 0)
 243                         pr_debug("problem adding lbr entry, skipping event\n");
 244         } else if (rep->mem_mode == 1) {
 245                 ret = report__add_mem_hist_entry(rep, &al, sample, evsel);
 246                 if (ret < 0)
 247                         pr_debug("problem adding mem entry, skipping event\n");
 248         } else {
 249                 if (al.map != NULL)
 250                         al.map->dso->hit = 1;
 251
 252                 ret = report__add_hist_entry(rep, evsel, &al, sample);
 253                 if (ret < 0)
 254                         pr_debug("problem incrementing symbol period, skipping event\n");
 255         }
 256         return ret;
 257 }
 258
 259 static int process_read_event(struct perf_tool *tool,
 260                               union perf_event *event,
 261                               struct perf_sample *sample __maybe_unused,
 262                               struct perf_evsel *evsel,
 263                               struct machine *machine __maybe_unused)
 264 {
 265         struct report *rep = container_of(tool, struct report, tool);
 266
 267         if (rep->show_threads) {
 268                 const char *name = evsel ? perf_evsel__name(evsel) : "unknown";
 269                 perf_read_values_add_value(&rep->show_threads_values,
 270                                            event->read.pid, event->read.tid,
 271                                            event->read.id,
 272                                            name,
 273                                            event->read.value);
 274         }
 275
 276         dump_printf(": %d %d %s %" PRIu64 "\n", event->read.pid, event->read.tid,
 277                     evsel ? perf_evsel__name(evsel) : "FAIL",
 278                     event->read.value);
 279
 280         return 0;
 281 }
 282
 283 /* For pipe mode, sample_type is not currently set */
 284 static int report__setup_sample_type(struct report *rep)
 285 {
 286         struct perf_session *session = rep->session;
 287         u64 sample_type = perf_evlist__combined_sample_type(session->evlist);
 288         bool is_pipe = perf_data_file__is_pipe(session->file);
 289
 290         if (!is_pipe && !(sample_type & PERF_SAMPLE_CALLCHAIN)) {
 291                 if (sort__has_parent) {
 292                         ui__error("Selected --sort parent, but no "
 293                                     "callchain data. Did you call "
 294                                     "'perf record' without -g?\n");
 295                         return -EINVAL;
 296                 }
 297                 if (symbol_conf.use_callchain) {
 298                         ui__error("Selected -g but no callchain data. Did "
 299                                     "you call 'perf record' without -g?\n");
 300                         return -1;
 301                 }
 302         } else if (!rep->dont_use_callchains &&
 303                    callchain_param.mode != CHAIN_NONE &&
 304                    !symbol_conf.use_callchain) {
 305                         symbol_conf.use_callchain = true;
 306                         if (callchain_register_param(&callchain_param) < 0) {
 307                                 ui__error("Can't register callchain params.\n");
 308                                 return -EINVAL;
 309                         }
 310         }
 311
 312         if (sort__mode == SORT_MODE__BRANCH) {
 313                 if (!is_pipe &&
 314                     !(sample_type & PERF_SAMPLE_BRANCH_STACK)) {
 315                         ui__error("Selected -b but no branch data. "
 316                                   "Did you call perf record without -b?\n");
 317                         return -1;
 318                 }
 319         }
 320
 321         return 0;
 322 }
 323
 324 static void sig_handler(int sig __maybe_unused)
 325 {
 326         session_done = 1;
 327 }
 328
 329 static size_t hists__fprintf_nr_sample_events(struct hists *hists, struct report *rep,
 330                                               const char *evname, FILE *fp)
 331 {
 332         size_t ret;
 333         char unit;
 334         unsigned long nr_samples = hists->stats.nr_events[PERF_RECORD_SAMPLE];
 335         u64 nr_events = hists->stats.total_period;
 336         struct perf_evsel *evsel = hists_to_evsel(hists);
 337         char buf[512];
 338         size_t size = sizeof(buf);
 339
 340         if (perf_evsel__is_group_event(evsel)) {
 341                 struct perf_evsel *pos;
 342
 343                 perf_evsel__group_desc(evsel, buf, size);
 344                 evname = buf;
 345
 346                 for_each_group_member(pos, evsel) {
 347                         nr_samples += pos->hists.stats.nr_events[PERF_RECORD_SAMPLE];
 348                         nr_events += pos->hists.stats.total_period;
 349                 }
 350         }
 351
 352         nr_samples = convert_unit(nr_samples, &unit);
 353         ret = fprintf(fp, "# Samples: %lu%c", nr_samples, unit);
 354         if (evname != NULL)
 355                 ret += fprintf(fp, " of event '%s'", evname);
 356
 357         if (rep->mem_mode) {
 358                 ret += fprintf(fp, "\n# Total weight : %" PRIu64, nr_events);
 359                 ret += fprintf(fp, "\n# Sort order   : %s", sort_order);
 360         } else
 361                 ret += fprintf(fp, "\n# Event count (approx.): %" PRIu64, nr_events);
 362         return ret + fprintf(fp, "\n#\n");
 363 }
 364
 365 static int perf_evlist__tty_browse_hists(struct perf_evlist *evlist,
 366                                          struct report *rep,
 367                                          const char *help)
 368 {
 369         struct perf_evsel *pos;
 370
 371         evlist__for_each(evlist, pos) {
 372                 struct hists *hists = &pos->hists;
 373                 const char *evname = perf_evsel__name(pos);
 374
 375                 if (symbol_conf.event_group &&
 376                     !perf_evsel__is_group_leader(pos))
 377                         continue;
 378
 379                 hists__fprintf_nr_sample_events(hists, rep, evname, stdout);
 380                 hists__fprintf(hists, true, 0, 0, rep->min_percent, stdout);
 381                 fprintf(stdout, "\n\n");
 382         }
 383
 384         if (sort_order == default_sort_order &&
 385             parent_pattern == default_parent_pattern) {
 386                 fprintf(stdout, "#\n# (%s)\n#\n", help);
 387
 388                 if (rep->show_threads) {
 389                         bool style = !strcmp(rep->pretty_printing_style, "raw");
 390                         perf_read_values_display(stdout, &rep->show_threads_values,
 391                                                  style);
 392                         perf_read_values_destroy(&rep->show_threads_values);
 393                 }
 394         }
 395
 396         return 0;
 397 }
 398
 399 static void report__warn_kptr_restrict(const struct report *rep)
 400 {
 401         struct map *kernel_map = rep->session->machines.host.vmlinux_maps[MAP__FUNCTION];
 402         struct kmap *kernel_kmap = map__kmap(kernel_map);
 403
 404         if (kernel_map == NULL ||
 405             (kernel_map->dso->hit &&
 406              (kernel_kmap->ref_reloc_sym == NULL ||
 407               kernel_kmap->ref_reloc_sym->addr == 0))) {
 408                 const char *desc =
 409                     "As no suitable kallsyms nor vmlinux was found, kernel samples\n"
 410                     "can't be resolved.";
 411
 412                 if (kernel_map) {
 413                         const struct dso *kdso = kernel_map->dso;
 414                         if (!RB_EMPTY_ROOT(&kdso->symbols[MAP__FUNCTION])) {
 415                                 desc = "If some relocation was applied (e.g. "
 416                                        "kexec) symbols may be misresolved.";
 417                         }
 418                 }
 419
 420                 ui__warning(
 421 "Kernel address maps (/proc/{kallsyms,modules}) were restricted.\n\n"
 422 "Check /proc/sys/kernel/kptr_restrict before running 'perf record'.\n\n%s\n\n"
 423 "Samples in kernel modules can't be resolved as well.\n\n",
 424                 desc);
 425         }
 426 }
 427
 428 static int report__gtk_browse_hists(struct report *rep, const char *help)
 429 {
 430         int (*hist_browser)(struct perf_evlist *evlist, const char *help,
 431                             struct hist_browser_timer *timer, float min_pcnt);
 432
 433         hist_browser = dlsym(perf_gtk_handle, "perf_evlist__gtk_browse_hists");
 434
 435         if (hist_browser == NULL) {
 436                 ui__error("GTK browser not found!\n");
 437                 return -1;
 438         }
 439
 440         return hist_browser(rep->session->evlist, help, NULL, rep->min_percent);
 441 }
 442
 443 static int report__browse_hists(struct report *rep)
 444 {
 445         int ret;
 446         struct perf_session *session = rep->session;
 447         struct perf_evlist *evlist = session->evlist;
 448         const char *help = "For a higher level overview, try: perf report --sort comm,dso";
 449
 450         switch (use_browser) {
 451         case 1:
 452                 ret = perf_evlist__tui_browse_hists(evlist, help, NULL,
 453                                                     rep->min_percent,
 454                                                     &session->header.env);
 455                 /*
 456                  * Usually "ret" is the last pressed key, and we only
 457                  * care if the key notifies us to switch data file.
 458                  */
 459                 if (ret != K_SWITCH_INPUT_DATA)
 460                         ret = 0;
 461                 break;
 462         case 2:
 463                 ret = report__gtk_browse_hists(rep, help);
 464                 break;
 465         default:
 466                 ret = perf_evlist__tty_browse_hists(evlist, rep, help);
 467                 break;
 468         }
 469
 470         return ret;
 471 }
 472
 473 static u64 report__collapse_hists(struct report *rep)
 474 {
 475         struct ui_progress prog;
 476         struct perf_evsel *pos;
 477         u64 nr_samples = 0;
 478         /*
 479          * Count number of histogram entries to use when showing progress,
 480          * reusing nr_samples variable.
 481          */
 482         evlist__for_each(rep->session->evlist, pos)
 483                 nr_samples += pos->hists.nr_entries;
 484
 485         ui_progress__init(&prog, nr_samples, "Merging related events...");
 486         /*
 487          * Count total number of samples, will be used to check if this
 488          * session had any.
 489          */
 490         nr_samples = 0;
 491
 492         evlist__for_each(rep->session->evlist, pos) {
 493                 struct hists *hists = &pos->hists;
 494
 495                 if (pos->idx == 0)
 496                         hists->symbol_filter_str = rep->symbol_filter_str;
 497
 498                 hists__collapse_resort(hists, &prog);
 499                 nr_samples += hists->stats.nr_events[PERF_RECORD_SAMPLE];
 500
 501                 /* Non-group events are considered as leader */
 502                 if (symbol_conf.event_group &&
 503                     !perf_evsel__is_group_leader(pos)) {
 504                         struct hists *leader_hists = &pos->leader->hists;
 505
 506                         hists__match(leader_hists, hists);
 507                         hists__link(leader_hists, hists);
 508                 }
 509         }
 510
 511         ui_progress__finish();
 512
 513         return nr_samples;
 514 }
 515
 516 static int __cmd_report(struct report *rep)
 517 {
 518         int ret;
 519         u64 nr_samples;
 520         struct perf_session *session = rep->session;
 521         struct perf_evsel *pos;
 522         struct perf_data_file *file = session->file;
 523
 524         signal(SIGINT, sig_handler);
 525
 526         if (rep->cpu_list) {
 527                 ret = perf_session__cpu_bitmap(session, rep->cpu_list,
 528                                                rep->cpu_bitmap);
 529                 if (ret)
 530                         return ret;
 531         }
 532
 533         if (rep->show_threads)
 534                 perf_read_values_init(&rep->show_threads_values);
 535
 536         ret = report__setup_sample_type(rep);
 537         if (ret)
 538                 return ret;
 539
 540         ret = perf_session__process_events(session, &rep->tool);
 541         if (ret)
 542                 return ret;
 543
 544         report__warn_kptr_restrict(rep);
 545
 546         if (use_browser == 0) {
 547                 if (verbose > 3)
 548                         perf_session__fprintf(session, stdout);
 549
 550                 if (verbose > 2)
 551                         perf_session__fprintf_dsos(session, stdout);
 552
 553                 if (dump_trace) {
 554                         perf_session__fprintf_nr_events(session, stdout);
 555                         return 0;
 556                 }
 557         }
 558
 559         nr_samples = report__collapse_hists(rep);
 560
 561         if (session_done())
 562                 return 0;
 563
 564         if (nr_samples == 0) {
 565                 ui__error("The %s file has no samples!\n", file->path);
 566                 return 0;
 567         }
 568
 569         evlist__for_each(session->evlist, pos)
 570                 hists__output_resort(&pos->hists);
 571
 572         return report__browse_hists(rep);
 573 }
 574
 575 static int
 576 parse_callchain_opt(const struct option *opt, const char *arg, int unset)
 577 {
 578         struct report *rep = (struct report *)opt->value;
 579         char *tok, *tok2;
 580         char *endptr;
 581
 582         /*
 583          * --no-call-graph
 584          */
 585         if (unset) {
 586                 rep->dont_use_callchains = true;
 587                 return 0;
 588         }
 589
 590         symbol_conf.use_callchain = true;
 591
 592         if (!arg)
 593                 return 0;
 594
 595         tok = strtok((char *)arg, ",");
 596         if (!tok)
 597                 return -1;
 598
 599         /* get the output mode */
 600         if (!strncmp(tok, "graph", strlen(arg)))
 601                 callchain_param.mode = CHAIN_GRAPH_ABS;
 602
 603         else if (!strncmp(tok, "flat", strlen(arg)))
 604                 callchain_param.mode = CHAIN_FLAT;
 605
 606         else if (!strncmp(tok, "fractal", strlen(arg)))
 607                 callchain_param.mode = CHAIN_GRAPH_REL;
 608
 609         else if (!strncmp(tok, "none", strlen(arg))) {
 610                 callchain_param.mode = CHAIN_NONE;
 611                 symbol_conf.use_callchain = false;
 612
 613                 return 0;
 614         }
 615
 616         else
 617                 return -1;
 618
 619         /* get the min percentage */
 620         tok = strtok(NULL, ",");
 621         if (!tok)
 622                 goto setup;
 623
 624         callchain_param.min_percent = strtod(tok, &endptr);
 625         if (tok == endptr)
 626                 return -1;
 627
 628         /* get the print limit */
 629         tok2 = strtok(NULL, ",");
 630         if (!tok2)
 631                 goto setup;
 632
 633         if (tok2[0] != 'c') {
 634                 callchain_param.print_limit = strtoul(tok2, &endptr, 0);
 635                 tok2 = strtok(NULL, ",");
 636                 if (!tok2)
 637                         goto setup;
 638         }
 639
 640         /* get the call chain order */
 641         if (!strncmp(tok2, "caller", strlen("caller")))
 642                 callchain_param.order = ORDER_CALLER;
 643         else if (!strncmp(tok2, "callee", strlen("callee")))
 644                 callchain_param.order = ORDER_CALLEE;
 645         else
 646                 return -1;
 647
 648         /* Get the sort key */
 649         tok2 = strtok(NULL, ",");
 650         if (!tok2)
 651                 goto setup;
 652         if (!strncmp(tok2, "function", strlen("function")))
 653                 callchain_param.key = CCKEY_FUNCTION;
 654         else if (!strncmp(tok2, "address", strlen("address")))
 655                 callchain_param.key = CCKEY_ADDRESS;
 656         else
 657                 return -1;
 658 setup:
 659         if (callchain_register_param(&callchain_param) < 0) {
 660                 pr_err("Can't register callchain params\n");
 661                 return -1;
 662         }
 663         return 0;
 664 }
 665
 666 int
 667 report_parse_ignore_callees_opt(const struct option *opt __maybe_unused,
 668                                 const char *arg, int unset __maybe_unused)
 669 {
 670         if (arg) {
 671                 int err = regcomp(&ignore_callees_regex, arg, REG_EXTENDED);
 672                 if (err) {
 673                         char buf[BUFSIZ];
 674                         regerror(err, &ignore_callees_regex, buf, sizeof(buf));
 675                         pr_err("Invalid --ignore-callees regex: %s\n%s", arg, buf);
 676                         return -1;
 677                 }
 678                 have_ignore_callees = 1;
 679         }
 680
 681         return 0;
 682 }
 683
 684 static int
 685 parse_branch_mode(const struct option *opt __maybe_unused,
 686                   const char *str __maybe_unused, int unset)
 687 {
 688         int *branch_mode = opt->value;
 689
 690         *branch_mode = !unset;
 691         return 0;
 692 }
 693
 694 static int
 695 parse_percent_limit(const struct option *opt, const char *str,
 696                     int unset __maybe_unused)
 697 {
 698         struct report *rep = opt->value;
 699
 700         rep->min_percent = strtof(str, NULL);
 701         return 0;
 702 }
 703
 704 int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused)
 705 {
 706         struct perf_session *session;
 707         struct stat st;
 708         bool has_br_stack = false;
 709         int branch_mode = -1;
 710         int ret = -1;
 711         char callchain_default_opt[] = "fractal,0.5,callee";
 712         const char * const report_usage[] = {
 713                 "perf report [<options>]",
 714                 NULL
 715         };
 716         struct report report = {
 717                 .tool = {
 718                         .sample          = process_sample_event,
 719                         .mmap            = perf_event__process_mmap,
 720                         .mmap2           = perf_event__process_mmap2,
 721                         .comm            = perf_event__process_comm,
 722                         .exit            = perf_event__process_exit,
 723                         .fork            = perf_event__process_fork,
 724                         .lost            = perf_event__process_lost,
 725                         .read            = process_read_event,
 726                         .attr            = perf_event__process_attr,
 727                         .tracing_data    = perf_event__process_tracing_data,
 728                         .build_id        = perf_event__process_build_id,
 729                         .ordered_samples = true,
 730                         .ordering_requires_timestamps = true,
 731                 },
 732                 .max_stack               = PERF_MAX_STACK_DEPTH,
 733                 .pretty_printing_style   = "normal",
 734         };
 735         const struct option options[] = {
 736         OPT_STRING('i', "input", &input_name, "file",
 737                     "input file name"),
 738         OPT_INCR('v', "verbose", &verbose,
 739                     "be more verbose (show symbol address, etc)"),
 740         OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
 741                     "dump raw trace in ASCII"),
 742         OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
 743                    "file", "vmlinux pathname"),
 744         OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name,
 745                    "file", "kallsyms pathname"),
 746         OPT_BOOLEAN('f', "force", &report.force, "don't complain, do it"),
 747         OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
 748                     "load module symbols - WARNING: use only with -k and LIVE kernel"),
 749         OPT_BOOLEAN('n', "show-nr-samples", &symbol_conf.show_nr_samples,
 750                     "Show a column with the number of samples"),
 751         OPT_BOOLEAN('T', "threads", &report.show_threads,
 752                     "Show per-thread event counters"),
 753         OPT_STRING(0, "pretty", &report.pretty_printing_style, "key",
 754                    "pretty printing style key: normal raw"),
 755         OPT_BOOLEAN(0, "tui", &report.use_tui, "Use the TUI interface"),
 756         OPT_BOOLEAN(0, "gtk", &report.use_gtk, "Use the GTK2 interface"),
 757         OPT_BOOLEAN(0, "stdio", &report.use_stdio,
 758                     "Use the stdio interface"),
 759         OPT_BOOLEAN(0, "header", &report.header, "Show data header."),
 760         OPT_BOOLEAN(0, "header-only", &report.header_only,
 761                     "Show only data header."),
 762         OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
 763                    "sort by key(s): pid, comm, dso, symbol, parent, cpu, srcline,"
 764                    " dso_to, dso_from, symbol_to, symbol_from, mispredict,"
 765                    " weight, local_weight, mem, symbol_daddr, dso_daddr, tlb, "
 766                    "snoop, locked, abort, in_tx, transaction"),
 767         OPT_BOOLEAN(0, "showcpuutilization", &symbol_conf.show_cpu_utilization,
 768                     "Show sample percentage for different cpu modes"),
 769         OPT_STRING('p', "parent", &parent_pattern, "regex",
 770                    "regex filter to identify parent, see: '--sort parent'"),
 771         OPT_BOOLEAN('x', "exclude-other", &symbol_conf.exclude_other,
 772                     "Only display entries with parent-match"),
 773         OPT_CALLBACK_DEFAULT('g', "call-graph", &report, "output_type,min_percent[,print_limit],call_order",
 774                      "Display callchains using output_type (graph, flat, fractal, or none) , min percent threshold, optional print limit, callchain order, key (function or address). "
 775                      "Default: fractal,0.5,callee,function", &parse_callchain_opt, callchain_default_opt),
 776         OPT_INTEGER(0, "max-stack", &report.max_stack,
 777                     "Set the maximum stack depth when parsing the callchain, "
 778                     "anything beyond the specified depth will be ignored. "
 779                     "Default: " __stringify(PERF_MAX_STACK_DEPTH)),
 780         OPT_BOOLEAN('G', "inverted", &report.inverted_callchain,
 781                     "alias for inverted call graph"),
 782         OPT_CALLBACK(0, "ignore-callees", NULL, "regex",
 783                    "ignore callees of these functions in call graphs",
 784                    report_parse_ignore_callees_opt),
 785         OPT_STRING('d', "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
 786                    "only consider symbols in these dsos"),
 787         OPT_STRING('c', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
 788                    "only consider symbols in these comms"),
 789         OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
 790                    "only consider these symbols"),
 791         OPT_STRING(0, "symbol-filter", &report.symbol_filter_str, "filter",
 792                    "only show symbols that (partially) match with this filter"),
 793         OPT_STRING('w', "column-widths", &symbol_conf.col_width_list_str,
 794                    "width[,width...]",
 795                    "don't try to adjust column width, use these fixed values"),
 796         OPT_STRING('t', "field-separator", &symbol_conf.field_sep, "separator",
 797                    "separator for columns, no spaces will be added between "
 798                    "columns '.' is reserved."),
 799         OPT_BOOLEAN('U', "hide-unresolved", &report.hide_unresolved,
 800                     "Only display entries resolved to a symbol"),
 801         OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory",
 802                     "Look for files with symbols relative to this directory"),
 803         OPT_STRING('C', "cpu", &report.cpu_list, "cpu",
 804                    "list of cpus to profile"),
 805         OPT_BOOLEAN('I', "show-info", &report.show_full_info,
 806                     "Display extended information about perf.data file"),
 807         OPT_BOOLEAN(0, "source", &symbol_conf.annotate_src,
 808                     "Interleave source code with assembly code (default)"),
 809         OPT_BOOLEAN(0, "asm-raw", &symbol_conf.annotate_asm_raw,
 810                     "Display raw encoding of assembly instructions (default)"),
 811         OPT_STRING('M', "disassembler-style", &disassembler_style, "disassembler style",
 812                    "Specify disassembler style (e.g. -M intel for intel syntax)"),
 813         OPT_BOOLEAN(0, "show-total-period", &symbol_conf.show_total_period,
 814                     "Show a column with the sum of periods"),
 815         OPT_BOOLEAN(0, "group", &symbol_conf.event_group,
 816                     "Show event group information together"),
 817         OPT_CALLBACK_NOOPT('b', "branch-stack", &branch_mode, "",
 818                     "use branch records for histogram filling", parse_branch_mode),
 819         OPT_STRING(0, "objdump", &objdump_path, "path",
 820                    "objdump binary to use for disassembly and annotations"),
 821         OPT_BOOLEAN(0, "demangle", &symbol_conf.demangle,
 822                     "Disable symbol demangling"),
 823         OPT_BOOLEAN(0, "mem-mode", &report.mem_mode, "mem access profile"),
 824         OPT_CALLBACK(0, "percent-limit", &report, "percent",
 825                      "Don't show entries under that percent", parse_percent_limit),
 826         OPT_END()
 827         };
 828         struct perf_data_file file = {
 829                 .mode  = PERF_DATA_MODE_READ,
 830         };
 831
 832         perf_config(report__config, &report);
 833
 834         argc = parse_options(argc, argv, options, report_usage, 0);
 835
 836         if (report.use_stdio)
 837                 use_browser = 0;
 838         else if (report.use_tui)
 839                 use_browser = 1;
 840         else if (report.use_gtk)
 841                 use_browser = 2;
 842
 843         if (report.inverted_callchain)
 844                 callchain_param.order = ORDER_CALLER;
 845
 846         if (!input_name || !strlen(input_name)) {
 847                 if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
 848                         input_name = "-";
 849                 else
 850                         input_name = "perf.data";
 851         }
 852
 853         file.path  = input_name;
 854         file.force = report.force;
 855
 856 repeat:
 857         session = perf_session__new(&file, false, &report.tool);
 858         if (session == NULL)
 859                 return -ENOMEM;
 860
 861         report.session = session;
 862
 863         has_br_stack = perf_header__has_feat(&session->header,
 864                                              HEADER_BRANCH_STACK);
 865
 866         if (branch_mode == -1 && has_br_stack)
 867                 sort__mode = SORT_MODE__BRANCH;
 868
 869         /* sort__mode could be NORMAL if --no-branch-stack */
 870         if (sort__mode == SORT_MODE__BRANCH) {
 871                 /*
 872                  * if no sort_order is provided, then specify
 873                  * branch-mode specific order
 874                  */
 875                 if (sort_order == default_sort_order)
 876                         sort_order = "comm,dso_from,symbol_from,"
 877                                      "dso_to,symbol_to";
 878
 879         }
 880         if (report.mem_mode) {
 881                 if (sort__mode == SORT_MODE__BRANCH) {
 882                         pr_err("branch and mem mode incompatible\n");
 883                         goto error;
 884                 }
 885                 sort__mode = SORT_MODE__MEMORY;
 886
 887                 /*
 888                  * if no sort_order is provided, then specify
 889                  * branch-mode specific order
 890                  */
 891                 if (sort_order == default_sort_order)
 892                         sort_order = "local_weight,mem,sym,dso,symbol_daddr,dso_daddr,snoop,tlb,locked";
 893         }
 894
 895         if (setup_sorting() < 0) {
 896                 parse_options_usage(report_usage, options, "s", 1);
 897                 goto error;
 898         }
 899
 900         if (parent_pattern != default_parent_pattern) {
 901                 if (sort_dimension__add("parent") < 0)
 902                         goto error;
 903         }
 904
 905         /* Force tty output for header output. */
 906         if (report.header || report.header_only)
 907                 use_browser = 0;
 908
 909         if (strcmp(input_name, "-") != 0)
 910                 setup_browser(true);
 911         else {
 912                 use_browser = 0;
 913                 perf_hpp__init();
 914         }
 915
 916         if (report.header || report.header_only) {
 917                 perf_session__fprintf_info(session, stdout,
 918                                            report.show_full_info);
 919                 if (report.header_only)
 920                         return 0;
 921         } else if (use_browser == 0) {
 922                 fputs("# To display the perf.data header info, please use --header/--header-only options.\n#\n",
 923                       stdout);
 924         }
 925
 926         /*
 927          * Only in the TUI browser we are doing integrated annotation,
 928          * so don't allocate extra space that won't be used in the stdio
 929          * implementation.
 930          */
 931         if (ui__has_annotation()) {
 932                 symbol_conf.priv_size = sizeof(struct annotation);
 933                 machines__set_symbol_filter(&session->machines,
 934                                             symbol__annotate_init);
 935                 /*
 936                  * For searching by name on the "Browse map details".
 937                  * providing it only in verbose mode not to bloat too
 938                  * much struct symbol.
 939                  */
 940                 if (verbose) {
 941                         /*
 942                          * XXX: Need to provide a less kludgy way to ask for
 943                          * more space per symbol, the u32 is for the index on
 944                          * the ui browser.
 945                          * See symbol__browser_index.
 946                          */
 947                         symbol_conf.priv_size += sizeof(u32);
 948                         symbol_conf.sort_by_name = true;
 949                 }
 950         }
 951
 952         if (symbol__init() < 0)
 953                 goto error;
 954
 955         if (argc) {
 956                 /*
 957                  * Special case: if there's an argument left then assume that
 958                  * it's a symbol filter:
 959                  */
 960                 if (argc > 1)
 961                         usage_with_options(report_usage, options);
 962
 963                 report.symbol_filter_str = argv[0];
 964         }
 965
 966         sort__setup_elide(stdout);
 967
 968         ret = __cmd_report(&report);
 969         if (ret == K_SWITCH_INPUT_DATA) {
 970                 perf_session__delete(session);
 971                 goto repeat;
 972         } else
 973                 ret = 0;
 974
 975 error:
 976         perf_session__delete(session);
 977         return ret;
 978 }