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