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                                       union perf_event *event)
  81 {
  82         struct report *rep = container_of(tool, struct report, tool);
  83         struct symbol *parent = NULL;
  84         u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
  85         struct hist_entry *he;
  86         struct mem_info *mi, *mx;
  87         uint64_t cost;
  88         int err = sample__resolve_callchain(sample, &parent, evsel, al, rep->max_stack);
  89
  90         if (err)
  91                 return err;
  92
  93         mi = machine__resolve_mem(al->machine, al->thread, sample, cpumode);
  94         if (!mi)
  95                 return -ENOMEM;
  96
  97         if (rep->hide_unresolved && !al->sym)
  98                 return 0;
  99
 100         cost = sample->weight;
 101         if (!cost)
 102                 cost = 1;
 103
 104         /*
 105          * must pass period=weight in order to get the correct
 106          * sorting from hists__collapse_resort() which is solely
 107          * based on periods. We want sorting be done on nr_events * weight
 108          * and this is indirectly achieved by passing period=weight here
 109          * and the he_stat__add_period() function.
 110          */
 111         he = __hists__add_entry(&evsel->hists, al, parent, NULL, mi,
 112                                 cost, cost, 0);
 113         if (!he)
 114                 return -ENOMEM;
 115
 116         if (ui__has_annotation()) {
 117                 err = hist_entry__inc_addr_samples(he, evsel->idx, al->addr);
 118                 if (err)
 119                         goto out;
 120
 121                 mx = he->mem_info;
 122                 err = addr_map_symbol__inc_samples(&mx->daddr, evsel->idx);
 123                 if (err)
 124                         goto out;
 125         }
 126
 127         evsel->hists.stats.total_period += cost;
 128         hists__inc_nr_events(&evsel->hists, PERF_RECORD_SAMPLE);
 129         err = hist_entry__append_callchain(he, sample);
 130 out:
 131         return err;
 132 }
 133
 134 static int report__add_branch_hist_entry(struct perf_tool *tool, struct addr_location *al,
 135                                          struct perf_sample *sample, struct perf_evsel *evsel)
 136 {
 137         struct report *rep = container_of(tool, struct report, tool);
 138         struct symbol *parent = NULL;
 139         unsigned i;
 140         struct hist_entry *he;
 141         struct branch_info *bi, *bx;
 142         int err = sample__resolve_callchain(sample, &parent, evsel, al, rep->max_stack);
 143
 144         if (err)
 145                 return err;
 146
 147         bi = machine__resolve_bstack(al->machine, al->thread,
 148                                      sample->branch_stack);
 149         if (!bi)
 150                 return -ENOMEM;
 151
 152         for (i = 0; i < sample->branch_stack->nr; i++) {
 153                 if (rep->hide_unresolved && !(bi[i].from.sym && bi[i].to.sym))
 154                         continue;
 155
 156                 err = -ENOMEM;
 157
 158                 /* overwrite the 'al' to branch-to info */
 159                 al->map = bi[i].to.map;
 160                 al->sym = bi[i].to.sym;
 161                 al->addr = bi[i].to.addr;
 162                 /*
 163                  * The report shows the percentage of total branches captured
 164                  * and not events sampled. Thus we use a pseudo period of 1.
 165                  */
 166                 he = __hists__add_entry(&evsel->hists, al, parent, &bi[i], NULL,
 167                                         1, 1, 0);
 168                 if (he) {
 169                         if (ui__has_annotation()) {
 170                                 bx = he->branch_info;
 171                                 err = addr_map_symbol__inc_samples(&bx->from,
 172                                                                    evsel->idx);
 173                                 if (err)
 174                                         goto out;
 175
 176                                 err = addr_map_symbol__inc_samples(&bx->to,
 177                                                                    evsel->idx);
 178                                 if (err)
 179                                         goto out;
 180                         }
 181
 182                         evsel->hists.stats.total_period += 1;
 183                         hists__inc_nr_events(&evsel->hists, PERF_RECORD_SAMPLE);
 184                 } else
 185                         goto out;
 186         }
 187         err = 0;
 188 out:
 189         free(bi);
 190         return err;
 191 }
 192
 193 static int report__add_hist_entry(struct perf_tool *tool, struct perf_evsel *evsel,
 194                                   struct addr_location *al, struct perf_sample *sample)
 195 {
 196         struct report *rep = container_of(tool, struct report, tool);
 197         struct symbol *parent = NULL;
 198         struct hist_entry *he;
 199         int err = sample__resolve_callchain(sample, &parent, evsel, al, rep->max_stack);
 200
 201         if (err)
 202                 return err;
 203
 204         he = __hists__add_entry(&evsel->hists, al, parent, NULL, NULL,
 205                                 sample->period, sample->weight,
 206                                 sample->transaction);
 207         if (he == NULL)
 208                 return -ENOMEM;
 209
 210         err = hist_entry__append_callchain(he, sample);
 211         if (err)
 212                 goto out;
 213
 214         if (ui__has_annotation())
 215                 err = hist_entry__inc_addr_samples(he, evsel->idx, al->addr);
 216
 217         evsel->hists.stats.total_period += sample->period;
 218         hists__inc_nr_events(&evsel->hists, PERF_RECORD_SAMPLE);
 219 out:
 220         return err;
 221 }
 222
 223
 224 static int process_sample_event(struct perf_tool *tool,
 225                                 union perf_event *event,
 226                                 struct perf_sample *sample,
 227                                 struct perf_evsel *evsel,
 228                                 struct machine *machine)
 229 {
 230         struct report *rep = container_of(tool, struct report, tool);
 231         struct addr_location al;
 232         int ret;
 233
 234         if (perf_event__preprocess_sample(event, machine, &al, sample) < 0) {
 235                 pr_debug("problem processing %d event, skipping it.\n",
 236                          event->header.type);
 237                 return -1;
 238         }
 239
 240         if (al.filtered || (rep->hide_unresolved && al.sym == NULL))
 241                 return 0;
 242
 243         if (rep->cpu_list && !test_bit(sample->cpu, rep->cpu_bitmap))
 244                 return 0;
 245
 246         if (sort__mode == SORT_MODE__BRANCH) {
 247                 ret = report__add_branch_hist_entry(tool, &al, sample, evsel);
 248                 if (ret < 0)
 249                         pr_debug("problem adding lbr entry, skipping event\n");
 250         } else if (rep->mem_mode == 1) {
 251                 ret = report__add_mem_hist_entry(tool, &al, sample, evsel, event);
 252                 if (ret < 0)
 253                         pr_debug("problem adding mem entry, skipping event\n");
 254         } else {
 255                 if (al.map != NULL)
 256                         al.map->dso->hit = 1;
 257
 258                 ret = report__add_hist_entry(tool, evsel, &al, sample);
 259                 if (ret < 0)
 260                         pr_debug("problem incrementing symbol period, skipping event\n");
 261         }
 262         return ret;
 263 }
 264
 265 static int process_read_event(struct perf_tool *tool,
 266                               union perf_event *event,
 267                               struct perf_sample *sample __maybe_unused,
 268                               struct perf_evsel *evsel,
 269                               struct machine *machine __maybe_unused)
 270 {
 271         struct report *rep = container_of(tool, struct report, tool);
 272
 273         if (rep->show_threads) {
 274                 const char *name = evsel ? perf_evsel__name(evsel) : "unknown";
 275                 perf_read_values_add_value(&rep->show_threads_values,
 276                                            event->read.pid, event->read.tid,
 277                                            event->read.id,
 278                                            name,
 279                                            event->read.value);
 280         }
 281
 282         dump_printf(": %d %d %s %" PRIu64 "\n", event->read.pid, event->read.tid,
 283                     evsel ? perf_evsel__name(evsel) : "FAIL",
 284                     event->read.value);
 285
 286         return 0;
 287 }
 288
 289 /* For pipe mode, sample_type is not currently set */
 290 static int report__setup_sample_type(struct report *rep)
 291 {
 292         struct perf_session *session = rep->session;
 293         u64 sample_type = perf_evlist__combined_sample_type(session->evlist);
 294         bool is_pipe = perf_data_file__is_pipe(session->file);
 295
 296         if (!is_pipe && !(sample_type & PERF_SAMPLE_CALLCHAIN)) {
 297                 if (sort__has_parent) {
 298                         ui__error("Selected --sort parent, but no "
 299                                     "callchain data. Did you call "
 300                                     "'perf record' without -g?\n");
 301                         return -EINVAL;
 302                 }
 303                 if (symbol_conf.use_callchain) {
 304                         ui__error("Selected -g but no callchain data. Did "
 305                                     "you call 'perf record' without -g?\n");
 306                         return -1;
 307                 }
 308         } else if (!rep->dont_use_callchains &&
 309                    callchain_param.mode != CHAIN_NONE &&
 310                    !symbol_conf.use_callchain) {
 311                         symbol_conf.use_callchain = true;
 312                         if (callchain_register_param(&callchain_param) < 0) {
 313                                 ui__error("Can't register callchain params.\n");
 314                                 return -EINVAL;
 315                         }
 316         }
 317
 318         if (sort__mode == SORT_MODE__BRANCH) {
 319                 if (!is_pipe &&
 320                     !(sample_type & PERF_SAMPLE_BRANCH_STACK)) {
 321                         ui__error("Selected -b but no branch data. "
 322                                   "Did you call perf record without -b?\n");
 323                         return -1;
 324                 }
 325         }
 326
 327         return 0;
 328 }
 329
 330 static void sig_handler(int sig __maybe_unused)
 331 {
 332         session_done = 1;
 333 }
 334
 335 static size_t hists__fprintf_nr_sample_events(struct hists *hists, struct report *rep,
 336                                               const char *evname, FILE *fp)
 337 {
 338         size_t ret;
 339         char unit;
 340         unsigned long nr_samples = hists->stats.nr_events[PERF_RECORD_SAMPLE];
 341         u64 nr_events = hists->stats.total_period;
 342         struct perf_evsel *evsel = hists_to_evsel(hists);
 343         char buf[512];
 344         size_t size = sizeof(buf);
 345
 346         if (perf_evsel__is_group_event(evsel)) {
 347                 struct perf_evsel *pos;
 348
 349                 perf_evsel__group_desc(evsel, buf, size);
 350                 evname = buf;
 351
 352                 for_each_group_member(pos, evsel) {
 353                         nr_samples += pos->hists.stats.nr_events[PERF_RECORD_SAMPLE];
 354                         nr_events += pos->hists.stats.total_period;
 355                 }
 356         }
 357
 358         nr_samples = convert_unit(nr_samples, &unit);
 359         ret = fprintf(fp, "# Samples: %lu%c", nr_samples, unit);
 360         if (evname != NULL)
 361                 ret += fprintf(fp, " of event '%s'", evname);
 362
 363         if (rep->mem_mode) {
 364                 ret += fprintf(fp, "\n# Total weight : %" PRIu64, nr_events);
 365                 ret += fprintf(fp, "\n# Sort order   : %s", sort_order);
 366         } else
 367                 ret += fprintf(fp, "\n# Event count (approx.): %" PRIu64, nr_events);
 368         return ret + fprintf(fp, "\n#\n");
 369 }
 370
 371 static int perf_evlist__tty_browse_hists(struct perf_evlist *evlist,
 372                                          struct report *rep,
 373                                          const char *help)
 374 {
 375         struct perf_evsel *pos;
 376
 377         evlist__for_each(evlist, pos) {
 378                 struct hists *hists = &pos->hists;
 379                 const char *evname = perf_evsel__name(pos);
 380
 381                 if (symbol_conf.event_group &&
 382                     !perf_evsel__is_group_leader(pos))
 383                         continue;
 384
 385                 hists__fprintf_nr_sample_events(hists, rep, evname, stdout);
 386                 hists__fprintf(hists, true, 0, 0, rep->min_percent, stdout);
 387                 fprintf(stdout, "\n\n");
 388         }
 389
 390         if (sort_order == default_sort_order &&
 391             parent_pattern == default_parent_pattern) {
 392                 fprintf(stdout, "#\n# (%s)\n#\n", help);
 393
 394                 if (rep->show_threads) {
 395                         bool style = !strcmp(rep->pretty_printing_style, "raw");
 396                         perf_read_values_display(stdout, &rep->show_threads_values,
 397                                                  style);
 398                         perf_read_values_destroy(&rep->show_threads_values);
 399                 }
 400         }
 401
 402         return 0;
 403 }
 404
 405 static void report__warn_kptr_restrict(const struct report *rep)
 406 {
 407         struct map *kernel_map = rep->session->machines.host.vmlinux_maps[MAP__FUNCTION];
 408         struct kmap *kernel_kmap = map__kmap(kernel_map);
 409
 410         if (kernel_map == NULL ||
 411             (kernel_map->dso->hit &&
 412              (kernel_kmap->ref_reloc_sym == NULL ||
 413               kernel_kmap->ref_reloc_sym->addr == 0))) {
 414                 const char *desc =
 415                     "As no suitable kallsyms nor vmlinux was found, kernel samples\n"
 416                     "can't be resolved.";
 417
 418                 if (kernel_map) {
 419                         const struct dso *kdso = kernel_map->dso;
 420                         if (!RB_EMPTY_ROOT(&kdso->symbols[MAP__FUNCTION])) {
 421                                 desc = "If some relocation was applied (e.g. "
 422                                        "kexec) symbols may be misresolved.";
 423                         }
 424                 }
 425
 426                 ui__warning(
 427 "Kernel address maps (/proc/{kallsyms,modules}) were restricted.\n\n"
 428 "Check /proc/sys/kernel/kptr_restrict before running 'perf record'.\n\n%s\n\n"
 429 "Samples in kernel modules can't be resolved as well.\n\n",
 430                 desc);
 431         }
 432 }
 433
 434 static int report__gtk_browse_hists(struct report *rep, const char *help)
 435 {
 436         int (*hist_browser)(struct perf_evlist *evlist, const char *help,
 437                             struct hist_browser_timer *timer, float min_pcnt);
 438
 439         hist_browser = dlsym(perf_gtk_handle, "perf_evlist__gtk_browse_hists");
 440
 441         if (hist_browser == NULL) {
 442                 ui__error("GTK browser not found!\n");
 443                 return -1;
 444         }
 445
 446         return hist_browser(rep->session->evlist, help, NULL, rep->min_percent);
 447 }
 448
 449 static int report__browse_hists(struct report *rep)
 450 {
 451         int ret;
 452         struct perf_session *session = rep->session;
 453         struct perf_evlist *evlist = session->evlist;
 454         const char *help = "For a higher level overview, try: perf report --sort comm,dso";
 455
 456         switch (use_browser) {
 457         case 1:
 458                 ret = perf_evlist__tui_browse_hists(evlist, help, NULL,
 459                                                     rep->min_percent,
 460                                                     &session->header.env);
 461                 /*
 462                  * Usually "ret" is the last pressed key, and we only
 463                  * care if the key notifies us to switch data file.
 464                  */
 465                 if (ret != K_SWITCH_INPUT_DATA)
 466                         ret = 0;
 467                 break;
 468         case 2:
 469                 ret = report__gtk_browse_hists(rep, help);
 470                 break;
 471         default:
 472                 ret = perf_evlist__tty_browse_hists(evlist, rep, help);
 473                 break;
 474         }
 475
 476         return ret;
 477 }
 478
 479 static u64 report__collapse_hists(struct report *rep)
 480 {
 481         struct ui_progress prog;
 482         struct perf_evsel *pos;
 483         u64 nr_samples = 0;
 484         /*
 485          * Count number of histogram entries to use when showing progress,
 486          * reusing nr_samples variable.
 487          */
 488         evlist__for_each(rep->session->evlist, pos)
 489                 nr_samples += pos->hists.nr_entries;
 490
 491         ui_progress__init(&prog, nr_samples, "Merging related events...");
 492         /*
 493          * Count total number of samples, will be used to check if this
 494          * session had any.
 495          */
 496         nr_samples = 0;
 497
 498         evlist__for_each(rep->session->evlist, pos) {
 499                 struct hists *hists = &pos->hists;
 500
 501                 if (pos->idx == 0)
 502                         hists->symbol_filter_str = rep->symbol_filter_str;
 503
 504                 hists__collapse_resort(hists, &prog);
 505                 nr_samples += hists->stats.nr_events[PERF_RECORD_SAMPLE];
 506
 507                 /* Non-group events are considered as leader */
 508                 if (symbol_conf.event_group &&
 509                     !perf_evsel__is_group_leader(pos)) {
 510                         struct hists *leader_hists = &pos->leader->hists;
 511
 512                         hists__match(leader_hists, hists);
 513                         hists__link(leader_hists, hists);
 514                 }
 515         }
 516
 517         ui_progress__finish();
 518
 519         return nr_samples;
 520 }
 521
 522 static int __cmd_report(struct report *rep)
 523 {
 524         int ret;
 525         u64 nr_samples;
 526         struct perf_session *session = rep->session;
 527         struct perf_evsel *pos;
 528         struct perf_data_file *file = session->file;
 529
 530         signal(SIGINT, sig_handler);
 531
 532         if (rep->cpu_list) {
 533                 ret = perf_session__cpu_bitmap(session, rep->cpu_list,
 534                                                rep->cpu_bitmap);
 535                 if (ret)
 536                         return ret;
 537         }
 538
 539         if (rep->show_threads)
 540                 perf_read_values_init(&rep->show_threads_values);
 541
 542         ret = report__setup_sample_type(rep);
 543         if (ret)
 544                 return ret;
 545
 546         ret = perf_session__process_events(session, &rep->tool);
 547         if (ret)
 548                 return ret;
 549
 550         report__warn_kptr_restrict(rep);
 551
 552         if (use_browser == 0) {
 553                 if (verbose > 3)
 554                         perf_session__fprintf(session, stdout);
 555
 556                 if (verbose > 2)
 557                         perf_session__fprintf_dsos(session, stdout);
 558
 559                 if (dump_trace) {
 560                         perf_session__fprintf_nr_events(session, stdout);
 561                         return 0;
 562                 }
 563         }
 564
 565         nr_samples = report__collapse_hists(rep);
 566
 567         if (session_done())
 568                 return 0;
 569
 570         if (nr_samples == 0) {
 571                 ui__error("The %s file has no samples!\n", file->path);
 572                 return 0;
 573         }
 574
 575         evlist__for_each(session->evlist, pos)
 576                 hists__output_resort(&pos->hists);
 577
 578         return report__browse_hists(rep);
 579 }
 580
 581 static int
 582 parse_callchain_opt(const struct option *opt, const char *arg, int unset)
 583 {
 584         struct report *rep = (struct report *)opt->value;
 585         char *tok, *tok2;
 586         char *endptr;
 587
 588         /*
 589          * --no-call-graph
 590          */
 591         if (unset) {
 592                 rep->dont_use_callchains = true;
 593                 return 0;
 594         }
 595
 596         symbol_conf.use_callchain = true;
 597
 598         if (!arg)
 599                 return 0;
 600
 601         tok = strtok((char *)arg, ",");
 602         if (!tok)
 603                 return -1;
 604
 605         /* get the output mode */
 606         if (!strncmp(tok, "graph", strlen(arg)))
 607                 callchain_param.mode = CHAIN_GRAPH_ABS;
 608
 609         else if (!strncmp(tok, "flat", strlen(arg)))
 610                 callchain_param.mode = CHAIN_FLAT;
 611
 612         else if (!strncmp(tok, "fractal", strlen(arg)))
 613                 callchain_param.mode = CHAIN_GRAPH_REL;
 614
 615         else if (!strncmp(tok, "none", strlen(arg))) {
 616                 callchain_param.mode = CHAIN_NONE;
 617                 symbol_conf.use_callchain = false;
 618
 619                 return 0;
 620         }
 621
 622         else
 623                 return -1;
 624
 625         /* get the min percentage */
 626         tok = strtok(NULL, ",");
 627         if (!tok)
 628                 goto setup;
 629
 630         callchain_param.min_percent = strtod(tok, &endptr);
 631         if (tok == endptr)
 632                 return -1;
 633
 634         /* get the print limit */
 635         tok2 = strtok(NULL, ",");
 636         if (!tok2)
 637                 goto setup;
 638
 639         if (tok2[0] != 'c') {
 640                 callchain_param.print_limit = strtoul(tok2, &endptr, 0);
 641                 tok2 = strtok(NULL, ",");
 642                 if (!tok2)
 643                         goto setup;
 644         }
 645
 646         /* get the call chain order */
 647         if (!strncmp(tok2, "caller", strlen("caller")))
 648                 callchain_param.order = ORDER_CALLER;
 649         else if (!strncmp(tok2, "callee", strlen("callee")))
 650                 callchain_param.order = ORDER_CALLEE;
 651         else
 652                 return -1;
 653
 654         /* Get the sort key */
 655         tok2 = strtok(NULL, ",");
 656         if (!tok2)
 657                 goto setup;
 658         if (!strncmp(tok2, "function", strlen("function")))
 659                 callchain_param.key = CCKEY_FUNCTION;
 660         else if (!strncmp(tok2, "address", strlen("address")))
 661                 callchain_param.key = CCKEY_ADDRESS;
 662         else
 663                 return -1;
 664 setup:
 665         if (callchain_register_param(&callchain_param) < 0) {
 666                 pr_err("Can't register callchain params\n");
 667                 return -1;
 668         }
 669         return 0;
 670 }
 671
 672 int
 673 report_parse_ignore_callees_opt(const struct option *opt __maybe_unused,
 674                                 const char *arg, int unset __maybe_unused)
 675 {
 676         if (arg) {
 677                 int err = regcomp(&ignore_callees_regex, arg, REG_EXTENDED);
 678                 if (err) {
 679                         char buf[BUFSIZ];
 680                         regerror(err, &ignore_callees_regex, buf, sizeof(buf));
 681                         pr_err("Invalid --ignore-callees regex: %s\n%s", arg, buf);
 682                         return -1;
 683                 }
 684                 have_ignore_callees = 1;
 685         }
 686
 687         return 0;
 688 }
 689
 690 static int
 691 parse_branch_mode(const struct option *opt __maybe_unused,
 692                   const char *str __maybe_unused, int unset)
 693 {
 694         int *branch_mode = opt->value;
 695
 696         *branch_mode = !unset;
 697         return 0;
 698 }
 699
 700 static int
 701 parse_percent_limit(const struct option *opt, const char *str,
 702                     int unset __maybe_unused)
 703 {
 704         struct report *rep = opt->value;
 705
 706         rep->min_percent = strtof(str, NULL);
 707         return 0;
 708 }
 709
 710 int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused)
 711 {
 712         struct perf_session *session;
 713         struct stat st;
 714         bool has_br_stack = false;
 715         int branch_mode = -1;
 716         int ret = -1;
 717         char callchain_default_opt[] = "fractal,0.5,callee";
 718         const char * const report_usage[] = {
 719                 "perf report [<options>]",
 720                 NULL
 721         };
 722         struct report report = {
 723                 .tool = {
 724                         .sample          = process_sample_event,
 725                         .mmap            = perf_event__process_mmap,
 726                         .mmap2           = perf_event__process_mmap2,
 727                         .comm            = perf_event__process_comm,
 728                         .exit            = perf_event__process_exit,
 729                         .fork            = perf_event__process_fork,
 730                         .lost            = perf_event__process_lost,
 731                         .read            = process_read_event,
 732                         .attr            = perf_event__process_attr,
 733                         .tracing_data    = perf_event__process_tracing_data,
 734                         .build_id        = perf_event__process_build_id,
 735                         .ordered_samples = true,
 736                         .ordering_requires_timestamps = true,
 737                 },
 738                 .max_stack               = PERF_MAX_STACK_DEPTH,
 739                 .pretty_printing_style   = "normal",
 740         };
 741         const struct option options[] = {
 742         OPT_STRING('i', "input", &input_name, "file",
 743                     "input file name"),
 744         OPT_INCR('v', "verbose", &verbose,
 745                     "be more verbose (show symbol address, etc)"),
 746         OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
 747                     "dump raw trace in ASCII"),
 748         OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
 749                    "file", "vmlinux pathname"),
 750         OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name,
 751                    "file", "kallsyms pathname"),
 752         OPT_BOOLEAN('f', "force", &report.force, "don't complain, do it"),
 753         OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
 754                     "load module symbols - WARNING: use only with -k and LIVE kernel"),
 755         OPT_BOOLEAN('n', "show-nr-samples", &symbol_conf.show_nr_samples,
 756                     "Show a column with the number of samples"),
 757         OPT_BOOLEAN('T', "threads", &report.show_threads,
 758                     "Show per-thread event counters"),
 759         OPT_STRING(0, "pretty", &report.pretty_printing_style, "key",
 760                    "pretty printing style key: normal raw"),
 761         OPT_BOOLEAN(0, "tui", &report.use_tui, "Use the TUI interface"),
 762         OPT_BOOLEAN(0, "gtk", &report.use_gtk, "Use the GTK2 interface"),
 763         OPT_BOOLEAN(0, "stdio", &report.use_stdio,
 764                     "Use the stdio interface"),
 765         OPT_BOOLEAN(0, "header", &report.header, "Show data header."),
 766         OPT_BOOLEAN(0, "header-only", &report.header_only,
 767                     "Show only data header."),
 768         OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
 769                    "sort by key(s): pid, comm, dso, symbol, parent, cpu, srcline,"
 770                    " dso_to, dso_from, symbol_to, symbol_from, mispredict,"
 771                    " weight, local_weight, mem, symbol_daddr, dso_daddr, tlb, "
 772                    "snoop, locked, abort, in_tx, transaction"),
 773         OPT_BOOLEAN(0, "showcpuutilization", &symbol_conf.show_cpu_utilization,
 774                     "Show sample percentage for different cpu modes"),
 775         OPT_STRING('p', "parent", &parent_pattern, "regex",
 776                    "regex filter to identify parent, see: '--sort parent'"),
 777         OPT_BOOLEAN('x', "exclude-other", &symbol_conf.exclude_other,
 778                     "Only display entries with parent-match"),
 779         OPT_CALLBACK_DEFAULT('g', "call-graph", &report, "output_type,min_percent[,print_limit],call_order",
 780                      "Display callchains using output_type (graph, flat, fractal, or none) , min percent threshold, optional print limit, callchain order, key (function or address). "
 781                      "Default: fractal,0.5,callee,function", &parse_callchain_opt, callchain_default_opt),
 782         OPT_INTEGER(0, "max-stack", &report.max_stack,
 783                     "Set the maximum stack depth when parsing the callchain, "
 784                     "anything beyond the specified depth will be ignored. "
 785                     "Default: " __stringify(PERF_MAX_STACK_DEPTH)),
 786         OPT_BOOLEAN('G', "inverted", &report.inverted_callchain,
 787                     "alias for inverted call graph"),
 788         OPT_CALLBACK(0, "ignore-callees", NULL, "regex",
 789                    "ignore callees of these functions in call graphs",
 790                    report_parse_ignore_callees_opt),
 791         OPT_STRING('d', "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
 792                    "only consider symbols in these dsos"),
 793         OPT_STRING('c', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
 794                    "only consider symbols in these comms"),
 795         OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
 796                    "only consider these symbols"),
 797         OPT_STRING(0, "symbol-filter", &report.symbol_filter_str, "filter",
 798                    "only show symbols that (partially) match with this filter"),
 799         OPT_STRING('w', "column-widths", &symbol_conf.col_width_list_str,
 800                    "width[,width...]",
 801                    "don't try to adjust column width, use these fixed values"),
 802         OPT_STRING('t', "field-separator", &symbol_conf.field_sep, "separator",
 803                    "separator for columns, no spaces will be added between "
 804                    "columns '.' is reserved."),
 805         OPT_BOOLEAN('U', "hide-unresolved", &report.hide_unresolved,
 806                     "Only display entries resolved to a symbol"),
 807         OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory",
 808                     "Look for files with symbols relative to this directory"),
 809         OPT_STRING('C', "cpu", &report.cpu_list, "cpu",
 810                    "list of cpus to profile"),
 811         OPT_BOOLEAN('I', "show-info", &report.show_full_info,
 812                     "Display extended information about perf.data file"),
 813         OPT_BOOLEAN(0, "source", &symbol_conf.annotate_src,
 814                     "Interleave source code with assembly code (default)"),
 815         OPT_BOOLEAN(0, "asm-raw", &symbol_conf.annotate_asm_raw,
 816                     "Display raw encoding of assembly instructions (default)"),
 817         OPT_STRING('M', "disassembler-style", &disassembler_style, "disassembler style",
 818                    "Specify disassembler style (e.g. -M intel for intel syntax)"),
 819         OPT_BOOLEAN(0, "show-total-period", &symbol_conf.show_total_period,
 820                     "Show a column with the sum of periods"),
 821         OPT_BOOLEAN(0, "group", &symbol_conf.event_group,
 822                     "Show event group information together"),
 823         OPT_CALLBACK_NOOPT('b', "branch-stack", &branch_mode, "",
 824                     "use branch records for histogram filling", parse_branch_mode),
 825         OPT_STRING(0, "objdump", &objdump_path, "path",
 826                    "objdump binary to use for disassembly and annotations"),
 827         OPT_BOOLEAN(0, "demangle", &symbol_conf.demangle,
 828                     "Disable symbol demangling"),
 829         OPT_BOOLEAN(0, "mem-mode", &report.mem_mode, "mem access profile"),
 830         OPT_CALLBACK(0, "percent-limit", &report, "percent",
 831                      "Don't show entries under that percent", parse_percent_limit),
 832         OPT_END()
 833         };
 834         struct perf_data_file file = {
 835                 .mode  = PERF_DATA_MODE_READ,
 836         };
 837
 838         perf_config(report__config, &report);
 839
 840         argc = parse_options(argc, argv, options, report_usage, 0);
 841
 842         if (report.use_stdio)
 843                 use_browser = 0;
 844         else if (report.use_tui)
 845                 use_browser = 1;
 846         else if (report.use_gtk)
 847                 use_browser = 2;
 848
 849         if (report.inverted_callchain)
 850                 callchain_param.order = ORDER_CALLER;
 851
 852         if (!input_name || !strlen(input_name)) {
 853                 if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
 854                         input_name = "-";
 855                 else
 856                         input_name = "perf.data";
 857         }
 858
 859         file.path  = input_name;
 860         file.force = report.force;
 861
 862 repeat:
 863         session = perf_session__new(&file, false, &report.tool);
 864         if (session == NULL)
 865                 return -ENOMEM;
 866
 867         report.session = session;
 868
 869         has_br_stack = perf_header__has_feat(&session->header,
 870                                              HEADER_BRANCH_STACK);
 871
 872         if (branch_mode == -1 && has_br_stack)
 873                 sort__mode = SORT_MODE__BRANCH;
 874
 875         /* sort__mode could be NORMAL if --no-branch-stack */
 876         if (sort__mode == SORT_MODE__BRANCH) {
 877                 /*
 878                  * if no sort_order is provided, then specify
 879                  * branch-mode specific order
 880                  */
 881                 if (sort_order == default_sort_order)
 882                         sort_order = "comm,dso_from,symbol_from,"
 883                                      "dso_to,symbol_to";
 884
 885         }
 886         if (report.mem_mode) {
 887                 if (sort__mode == SORT_MODE__BRANCH) {
 888                         pr_err("branch and mem mode incompatible\n");
 889                         goto error;
 890                 }
 891                 sort__mode = SORT_MODE__MEMORY;
 892
 893                 /*
 894                  * if no sort_order is provided, then specify
 895                  * branch-mode specific order
 896                  */
 897                 if (sort_order == default_sort_order)
 898                         sort_order = "local_weight,mem,sym,dso,symbol_daddr,dso_daddr,snoop,tlb,locked";
 899         }
 900
 901         if (setup_sorting() < 0) {
 902                 parse_options_usage(report_usage, options, "s", 1);
 903                 goto error;
 904         }
 905
 906         if (parent_pattern != default_parent_pattern) {
 907                 if (sort_dimension__add("parent") < 0)
 908                         goto error;
 909         }
 910
 911         /* Force tty output for header output. */
 912         if (report.header || report.header_only)
 913                 use_browser = 0;
 914
 915         if (strcmp(input_name, "-") != 0)
 916                 setup_browser(true);
 917         else {
 918                 use_browser = 0;
 919                 perf_hpp__init();
 920         }
 921
 922         if (report.header || report.header_only) {
 923                 perf_session__fprintf_info(session, stdout,
 924                                            report.show_full_info);
 925                 if (report.header_only)
 926                         return 0;
 927         } else if (use_browser == 0) {
 928                 fputs("# To display the perf.data header info, please use --header/--header-only options.\n#\n",
 929                       stdout);
 930         }
 931
 932         /*
 933          * Only in the TUI browser we are doing integrated annotation,
 934          * so don't allocate extra space that won't be used in the stdio
 935          * implementation.
 936          */
 937         if (use_browser == 1 && sort__has_sym) {
 938                 symbol_conf.priv_size = sizeof(struct annotation);
 939                 machines__set_symbol_filter(&session->machines,
 940                                             symbol__annotate_init);
 941                 /*
 942                  * For searching by name on the "Browse map details".
 943                  * providing it only in verbose mode not to bloat too
 944                  * much struct symbol.
 945                  */
 946                 if (verbose) {
 947                         /*
 948                          * XXX: Need to provide a less kludgy way to ask for
 949                          * more space per symbol, the u32 is for the index on
 950                          * the ui browser.
 951                          * See symbol__browser_index.
 952                          */
 953                         symbol_conf.priv_size += sizeof(u32);
 954                         symbol_conf.sort_by_name = true;
 955                 }
 956         }
 957
 958         if (symbol__init() < 0)
 959                 goto error;
 960
 961         if (argc) {
 962                 /*
 963                  * Special case: if there's an argument left then assume that
 964                  * it's a symbol filter:
 965                  */
 966                 if (argc > 1)
 967                         usage_with_options(report_usage, options);
 968
 969                 report.symbol_filter_str = argv[0];
 970         }
 971
 972         sort__setup_elide(stdout);
 973
 974         ret = __cmd_report(&report);
 975         if (ret == K_SWITCH_INPUT_DATA) {
 976                 perf_session__delete(session);
 977                 goto repeat;
 978         } else
 979                 ret = 0;
 980
 981 error:
 982         perf_session__delete(session);
 983         return ret;
 984 }