Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
[sfrench/cifs-2.6.git] / tools / perf / builtin-report.c
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * builtin-report.c
4  *
5  * Builtin report command: Analyze the perf.data input file,
6  * look up and read DSOs and symbol information and display
7  * a histogram of results, along various sorting keys.
8  */
9 #include "builtin.h"
10
11 #include "util/util.h"
12 #include "util/config.h"
13
14 #include "util/annotate.h"
15 #include "util/color.h"
16 #include <linux/list.h>
17 #include <linux/rbtree.h>
18 #include <linux/err.h>
19 #include "util/symbol.h"
20 #include "util/callchain.h"
21 #include "util/values.h"
22
23 #include "perf.h"
24 #include "util/debug.h"
25 #include "util/evlist.h"
26 #include "util/evsel.h"
27 #include "util/header.h"
28 #include "util/session.h"
29 #include "util/tool.h"
30
31 #include <subcmd/parse-options.h>
32 #include <subcmd/exec-cmd.h>
33 #include "util/parse-events.h"
34
35 #include "util/thread.h"
36 #include "util/sort.h"
37 #include "util/hist.h"
38 #include "util/data.h"
39 #include "arch/common.h"
40 #include "util/time-utils.h"
41 #include "util/auxtrace.h"
42 #include "util/units.h"
43 #include "util/branch.h"
44
45 #include <dlfcn.h>
46 #include <errno.h>
47 #include <inttypes.h>
48 #include <regex.h>
49 #include <signal.h>
50 #include <linux/bitmap.h>
51 #include <linux/stringify.h>
52 #include <sys/types.h>
53 #include <sys/stat.h>
54 #include <unistd.h>
55 #include <linux/mman.h>
56
57 struct report {
58         struct perf_tool        tool;
59         struct perf_session     *session;
60         bool                    use_tui, use_gtk, use_stdio;
61         bool                    show_full_info;
62         bool                    show_threads;
63         bool                    inverted_callchain;
64         bool                    mem_mode;
65         bool                    stats_mode;
66         bool                    tasks_mode;
67         bool                    mmaps_mode;
68         bool                    header;
69         bool                    header_only;
70         bool                    nonany_branch_mode;
71         bool                    group_set;
72         int                     max_stack;
73         struct perf_read_values show_threads_values;
74         struct annotation_options annotation_opts;
75         const char              *pretty_printing_style;
76         const char              *cpu_list;
77         const char              *symbol_filter_str;
78         const char              *time_str;
79         struct perf_time_interval *ptime_range;
80         int                     range_size;
81         int                     range_num;
82         float                   min_percent;
83         u64                     nr_entries;
84         u64                     queue_size;
85         int                     socket_filter;
86         DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
87         struct branch_type_stat brtype_stat;
88 };
89
90 static int report__config(const char *var, const char *value, void *cb)
91 {
92         struct report *rep = cb;
93
94         if (!strcmp(var, "report.group")) {
95                 symbol_conf.event_group = perf_config_bool(var, value);
96                 return 0;
97         }
98         if (!strcmp(var, "report.percent-limit")) {
99                 double pcnt = strtof(value, NULL);
100
101                 rep->min_percent = pcnt;
102                 callchain_param.min_percent = pcnt;
103                 return 0;
104         }
105         if (!strcmp(var, "report.children")) {
106                 symbol_conf.cumulate_callchain = perf_config_bool(var, value);
107                 return 0;
108         }
109         if (!strcmp(var, "report.queue-size"))
110                 return perf_config_u64(&rep->queue_size, var, value);
111
112         if (!strcmp(var, "report.sort_order")) {
113                 default_sort_order = strdup(value);
114                 return 0;
115         }
116
117         return 0;
118 }
119
120 static int hist_iter__report_callback(struct hist_entry_iter *iter,
121                                       struct addr_location *al, bool single,
122                                       void *arg)
123 {
124         int err = 0;
125         struct report *rep = arg;
126         struct hist_entry *he = iter->he;
127         struct perf_evsel *evsel = iter->evsel;
128         struct perf_sample *sample = iter->sample;
129         struct mem_info *mi;
130         struct branch_info *bi;
131
132         if (!ui__has_annotation())
133                 return 0;
134
135         hist__account_cycles(sample->branch_stack, al, sample,
136                              rep->nonany_branch_mode);
137
138         if (sort__mode == SORT_MODE__BRANCH) {
139                 bi = he->branch_info;
140                 err = addr_map_symbol__inc_samples(&bi->from, sample, evsel);
141                 if (err)
142                         goto out;
143
144                 err = addr_map_symbol__inc_samples(&bi->to, sample, evsel);
145
146         } else if (rep->mem_mode) {
147                 mi = he->mem_info;
148                 err = addr_map_symbol__inc_samples(&mi->daddr, sample, evsel);
149                 if (err)
150                         goto out;
151
152                 err = hist_entry__inc_addr_samples(he, sample, evsel, al->addr);
153
154         } else if (symbol_conf.cumulate_callchain) {
155                 if (single)
156                         err = hist_entry__inc_addr_samples(he, sample, evsel, al->addr);
157         } else {
158                 err = hist_entry__inc_addr_samples(he, sample, evsel, al->addr);
159         }
160
161 out:
162         return err;
163 }
164
165 static int hist_iter__branch_callback(struct hist_entry_iter *iter,
166                                       struct addr_location *al __maybe_unused,
167                                       bool single __maybe_unused,
168                                       void *arg)
169 {
170         struct hist_entry *he = iter->he;
171         struct report *rep = arg;
172         struct branch_info *bi;
173         struct perf_sample *sample = iter->sample;
174         struct perf_evsel *evsel = iter->evsel;
175         int err;
176
177         if (!ui__has_annotation())
178                 return 0;
179
180         hist__account_cycles(sample->branch_stack, al, sample,
181                              rep->nonany_branch_mode);
182
183         bi = he->branch_info;
184         err = addr_map_symbol__inc_samples(&bi->from, sample, evsel);
185         if (err)
186                 goto out;
187
188         err = addr_map_symbol__inc_samples(&bi->to, sample, evsel);
189
190         branch_type_count(&rep->brtype_stat, &bi->flags,
191                           bi->from.addr, bi->to.addr);
192
193 out:
194         return err;
195 }
196
197 static void setup_forced_leader(struct report *report,
198                                 struct perf_evlist *evlist)
199 {
200         if (report->group_set)
201                 perf_evlist__force_leader(evlist);
202 }
203
204 static int process_feature_event(struct perf_session *session,
205                                  union perf_event *event)
206 {
207         struct report *rep = container_of(session->tool, struct report, tool);
208
209         if (event->feat.feat_id < HEADER_LAST_FEATURE)
210                 return perf_event__process_feature(session, event);
211
212         if (event->feat.feat_id != HEADER_LAST_FEATURE) {
213                 pr_err("failed: wrong feature ID: %" PRIu64 "\n",
214                        event->feat.feat_id);
215                 return -1;
216         }
217
218         /*
219          * (feat_id = HEADER_LAST_FEATURE) is the end marker which
220          * means all features are received, now we can force the
221          * group if needed.
222          */
223         setup_forced_leader(rep, session->evlist);
224         return 0;
225 }
226
227 static int process_sample_event(struct perf_tool *tool,
228                                 union perf_event *event,
229                                 struct perf_sample *sample,
230                                 struct perf_evsel *evsel,
231                                 struct machine *machine)
232 {
233         struct report *rep = container_of(tool, struct report, tool);
234         struct addr_location al;
235         struct hist_entry_iter iter = {
236                 .evsel                  = evsel,
237                 .sample                 = sample,
238                 .hide_unresolved        = symbol_conf.hide_unresolved,
239                 .add_entry_cb           = hist_iter__report_callback,
240         };
241         int ret = 0;
242
243         if (perf_time__ranges_skip_sample(rep->ptime_range, rep->range_num,
244                                           sample->time)) {
245                 return 0;
246         }
247
248         if (machine__resolve(machine, &al, sample) < 0) {
249                 pr_debug("problem processing %d event, skipping it.\n",
250                          event->header.type);
251                 return -1;
252         }
253
254         if (symbol_conf.hide_unresolved && al.sym == NULL)
255                 goto out_put;
256
257         if (rep->cpu_list && !test_bit(sample->cpu, rep->cpu_bitmap))
258                 goto out_put;
259
260         if (sort__mode == SORT_MODE__BRANCH) {
261                 /*
262                  * A non-synthesized event might not have a branch stack if
263                  * branch stacks have been synthesized (using itrace options).
264                  */
265                 if (!sample->branch_stack)
266                         goto out_put;
267
268                 iter.add_entry_cb = hist_iter__branch_callback;
269                 iter.ops = &hist_iter_branch;
270         } else if (rep->mem_mode) {
271                 iter.ops = &hist_iter_mem;
272         } else if (symbol_conf.cumulate_callchain) {
273                 iter.ops = &hist_iter_cumulative;
274         } else {
275                 iter.ops = &hist_iter_normal;
276         }
277
278         if (al.map != NULL)
279                 al.map->dso->hit = 1;
280
281         ret = hist_entry_iter__add(&iter, &al, rep->max_stack, rep);
282         if (ret < 0)
283                 pr_debug("problem adding hist entry, skipping event\n");
284 out_put:
285         addr_location__put(&al);
286         return ret;
287 }
288
289 static int process_read_event(struct perf_tool *tool,
290                               union perf_event *event,
291                               struct perf_sample *sample __maybe_unused,
292                               struct perf_evsel *evsel,
293                               struct machine *machine __maybe_unused)
294 {
295         struct report *rep = container_of(tool, struct report, tool);
296
297         if (rep->show_threads) {
298                 const char *name = evsel ? perf_evsel__name(evsel) : "unknown";
299                 int err = perf_read_values_add_value(&rep->show_threads_values,
300                                            event->read.pid, event->read.tid,
301                                            evsel->idx,
302                                            name,
303                                            event->read.value);
304
305                 if (err)
306                         return err;
307         }
308
309         return 0;
310 }
311
312 /* For pipe mode, sample_type is not currently set */
313 static int report__setup_sample_type(struct report *rep)
314 {
315         struct perf_session *session = rep->session;
316         u64 sample_type = perf_evlist__combined_sample_type(session->evlist);
317         bool is_pipe = perf_data__is_pipe(session->data);
318
319         if (session->itrace_synth_opts->callchain ||
320             (!is_pipe &&
321              perf_header__has_feat(&session->header, HEADER_AUXTRACE) &&
322              !session->itrace_synth_opts->set))
323                 sample_type |= PERF_SAMPLE_CALLCHAIN;
324
325         if (session->itrace_synth_opts->last_branch)
326                 sample_type |= PERF_SAMPLE_BRANCH_STACK;
327
328         if (!is_pipe && !(sample_type & PERF_SAMPLE_CALLCHAIN)) {
329                 if (perf_hpp_list.parent) {
330                         ui__error("Selected --sort parent, but no "
331                                     "callchain data. Did you call "
332                                     "'perf record' without -g?\n");
333                         return -EINVAL;
334                 }
335                 if (symbol_conf.use_callchain &&
336                         !symbol_conf.show_branchflag_count) {
337                         ui__error("Selected -g or --branch-history.\n"
338                                   "But no callchain or branch data.\n"
339                                   "Did you call 'perf record' without -g or -b?\n");
340                         return -1;
341                 }
342         } else if (!callchain_param.enabled &&
343                    callchain_param.mode != CHAIN_NONE &&
344                    !symbol_conf.use_callchain) {
345                         symbol_conf.use_callchain = true;
346                         if (callchain_register_param(&callchain_param) < 0) {
347                                 ui__error("Can't register callchain params.\n");
348                                 return -EINVAL;
349                         }
350         }
351
352         if (symbol_conf.cumulate_callchain) {
353                 /* Silently ignore if callchain is missing */
354                 if (!(sample_type & PERF_SAMPLE_CALLCHAIN)) {
355                         symbol_conf.cumulate_callchain = false;
356                         perf_hpp__cancel_cumulate();
357                 }
358         }
359
360         if (sort__mode == SORT_MODE__BRANCH) {
361                 if (!is_pipe &&
362                     !(sample_type & PERF_SAMPLE_BRANCH_STACK)) {
363                         ui__error("Selected -b but no branch data. "
364                                   "Did you call perf record without -b?\n");
365                         return -1;
366                 }
367         }
368
369         if (symbol_conf.use_callchain || symbol_conf.cumulate_callchain) {
370                 if ((sample_type & PERF_SAMPLE_REGS_USER) &&
371                     (sample_type & PERF_SAMPLE_STACK_USER)) {
372                         callchain_param.record_mode = CALLCHAIN_DWARF;
373                         dwarf_callchain_users = true;
374                 } else if (sample_type & PERF_SAMPLE_BRANCH_STACK)
375                         callchain_param.record_mode = CALLCHAIN_LBR;
376                 else
377                         callchain_param.record_mode = CALLCHAIN_FP;
378         }
379
380         /* ??? handle more cases than just ANY? */
381         if (!(perf_evlist__combined_branch_type(session->evlist) &
382                                 PERF_SAMPLE_BRANCH_ANY))
383                 rep->nonany_branch_mode = true;
384
385         return 0;
386 }
387
388 static void sig_handler(int sig __maybe_unused)
389 {
390         session_done = 1;
391 }
392
393 static size_t hists__fprintf_nr_sample_events(struct hists *hists, struct report *rep,
394                                               const char *evname, FILE *fp)
395 {
396         size_t ret;
397         char unit;
398         unsigned long nr_samples = hists->stats.nr_events[PERF_RECORD_SAMPLE];
399         u64 nr_events = hists->stats.total_period;
400         struct perf_evsel *evsel = hists_to_evsel(hists);
401         char buf[512];
402         size_t size = sizeof(buf);
403         int socked_id = hists->socket_filter;
404
405         if (quiet)
406                 return 0;
407
408         if (symbol_conf.filter_relative) {
409                 nr_samples = hists->stats.nr_non_filtered_samples;
410                 nr_events = hists->stats.total_non_filtered_period;
411         }
412
413         if (perf_evsel__is_group_event(evsel)) {
414                 struct perf_evsel *pos;
415
416                 perf_evsel__group_desc(evsel, buf, size);
417                 evname = buf;
418
419                 for_each_group_member(pos, evsel) {
420                         const struct hists *pos_hists = evsel__hists(pos);
421
422                         if (symbol_conf.filter_relative) {
423                                 nr_samples += pos_hists->stats.nr_non_filtered_samples;
424                                 nr_events += pos_hists->stats.total_non_filtered_period;
425                         } else {
426                                 nr_samples += pos_hists->stats.nr_events[PERF_RECORD_SAMPLE];
427                                 nr_events += pos_hists->stats.total_period;
428                         }
429                 }
430         }
431
432         nr_samples = convert_unit(nr_samples, &unit);
433         ret = fprintf(fp, "# Samples: %lu%c", nr_samples, unit);
434         if (evname != NULL) {
435                 ret += fprintf(fp, " of event%s '%s'",
436                                evsel->nr_members > 1 ? "s" : "", evname);
437         }
438
439         if (rep->time_str)
440                 ret += fprintf(fp, " (time slices: %s)", rep->time_str);
441
442         if (symbol_conf.show_ref_callgraph &&
443             strstr(evname, "call-graph=no")) {
444                 ret += fprintf(fp, ", show reference callgraph");
445         }
446
447         if (rep->mem_mode) {
448                 ret += fprintf(fp, "\n# Total weight : %" PRIu64, nr_events);
449                 ret += fprintf(fp, "\n# Sort order   : %s", sort_order ? : default_mem_sort_order);
450         } else
451                 ret += fprintf(fp, "\n# Event count (approx.): %" PRIu64, nr_events);
452
453         if (socked_id > -1)
454                 ret += fprintf(fp, "\n# Processor Socket: %d", socked_id);
455
456         return ret + fprintf(fp, "\n#\n");
457 }
458
459 static int perf_evlist__tty_browse_hists(struct perf_evlist *evlist,
460                                          struct report *rep,
461                                          const char *help)
462 {
463         struct perf_evsel *pos;
464
465         if (!quiet) {
466                 fprintf(stdout, "#\n# Total Lost Samples: %" PRIu64 "\n#\n",
467                         evlist->stats.total_lost_samples);
468         }
469
470         evlist__for_each_entry(evlist, pos) {
471                 struct hists *hists = evsel__hists(pos);
472                 const char *evname = perf_evsel__name(pos);
473
474                 if (symbol_conf.event_group &&
475                     !perf_evsel__is_group_leader(pos))
476                         continue;
477
478                 hists__fprintf_nr_sample_events(hists, rep, evname, stdout);
479                 hists__fprintf(hists, !quiet, 0, 0, rep->min_percent, stdout,
480                                !(symbol_conf.use_callchain ||
481                                  symbol_conf.show_branchflag_count));
482                 fprintf(stdout, "\n\n");
483         }
484
485         if (!quiet)
486                 fprintf(stdout, "#\n# (%s)\n#\n", help);
487
488         if (rep->show_threads) {
489                 bool style = !strcmp(rep->pretty_printing_style, "raw");
490                 perf_read_values_display(stdout, &rep->show_threads_values,
491                                          style);
492                 perf_read_values_destroy(&rep->show_threads_values);
493         }
494
495         if (sort__mode == SORT_MODE__BRANCH)
496                 branch_type_stat_display(stdout, &rep->brtype_stat);
497
498         return 0;
499 }
500
501 static void report__warn_kptr_restrict(const struct report *rep)
502 {
503         struct map *kernel_map = machine__kernel_map(&rep->session->machines.host);
504         struct kmap *kernel_kmap = kernel_map ? map__kmap(kernel_map) : NULL;
505
506         if (perf_evlist__exclude_kernel(rep->session->evlist))
507                 return;
508
509         if (kernel_map == NULL ||
510             (kernel_map->dso->hit &&
511              (kernel_kmap->ref_reloc_sym == NULL ||
512               kernel_kmap->ref_reloc_sym->addr == 0))) {
513                 const char *desc =
514                     "As no suitable kallsyms nor vmlinux was found, kernel samples\n"
515                     "can't be resolved.";
516
517                 if (kernel_map && map__has_symbols(kernel_map)) {
518                         desc = "If some relocation was applied (e.g. "
519                                "kexec) symbols may be misresolved.";
520                 }
521
522                 ui__warning(
523 "Kernel address maps (/proc/{kallsyms,modules}) were restricted.\n\n"
524 "Check /proc/sys/kernel/kptr_restrict before running 'perf record'.\n\n%s\n\n"
525 "Samples in kernel modules can't be resolved as well.\n\n",
526                 desc);
527         }
528 }
529
530 static int report__gtk_browse_hists(struct report *rep, const char *help)
531 {
532         int (*hist_browser)(struct perf_evlist *evlist, const char *help,
533                             struct hist_browser_timer *timer, float min_pcnt);
534
535         hist_browser = dlsym(perf_gtk_handle, "perf_evlist__gtk_browse_hists");
536
537         if (hist_browser == NULL) {
538                 ui__error("GTK browser not found!\n");
539                 return -1;
540         }
541
542         return hist_browser(rep->session->evlist, help, NULL, rep->min_percent);
543 }
544
545 static int report__browse_hists(struct report *rep)
546 {
547         int ret;
548         struct perf_session *session = rep->session;
549         struct perf_evlist *evlist = session->evlist;
550         const char *help = perf_tip(system_path(TIPDIR));
551
552         if (help == NULL) {
553                 /* fallback for people who don't install perf ;-) */
554                 help = perf_tip(DOCDIR);
555                 if (help == NULL)
556                         help = "Cannot load tips.txt file, please install perf!";
557         }
558
559         switch (use_browser) {
560         case 1:
561                 ret = perf_evlist__tui_browse_hists(evlist, help, NULL,
562                                                     rep->min_percent,
563                                                     &session->header.env,
564                                                     true, &rep->annotation_opts);
565                 /*
566                  * Usually "ret" is the last pressed key, and we only
567                  * care if the key notifies us to switch data file.
568                  */
569                 if (ret != K_SWITCH_INPUT_DATA)
570                         ret = 0;
571                 break;
572         case 2:
573                 ret = report__gtk_browse_hists(rep, help);
574                 break;
575         default:
576                 ret = perf_evlist__tty_browse_hists(evlist, rep, help);
577                 break;
578         }
579
580         return ret;
581 }
582
583 static int report__collapse_hists(struct report *rep)
584 {
585         struct ui_progress prog;
586         struct perf_evsel *pos;
587         int ret = 0;
588
589         ui_progress__init(&prog, rep->nr_entries, "Merging related events...");
590
591         evlist__for_each_entry(rep->session->evlist, pos) {
592                 struct hists *hists = evsel__hists(pos);
593
594                 if (pos->idx == 0)
595                         hists->symbol_filter_str = rep->symbol_filter_str;
596
597                 hists->socket_filter = rep->socket_filter;
598
599                 ret = hists__collapse_resort(hists, &prog);
600                 if (ret < 0)
601                         break;
602
603                 /* Non-group events are considered as leader */
604                 if (symbol_conf.event_group &&
605                     !perf_evsel__is_group_leader(pos)) {
606                         struct hists *leader_hists = evsel__hists(pos->leader);
607
608                         hists__match(leader_hists, hists);
609                         hists__link(leader_hists, hists);
610                 }
611         }
612
613         ui_progress__finish();
614         return ret;
615 }
616
617 static void report__output_resort(struct report *rep)
618 {
619         struct ui_progress prog;
620         struct perf_evsel *pos;
621
622         ui_progress__init(&prog, rep->nr_entries, "Sorting events for output...");
623
624         evlist__for_each_entry(rep->session->evlist, pos)
625                 perf_evsel__output_resort(pos, &prog);
626
627         ui_progress__finish();
628 }
629
630 static void stats_setup(struct report *rep)
631 {
632         memset(&rep->tool, 0, sizeof(rep->tool));
633         rep->tool.no_warn = true;
634 }
635
636 static int stats_print(struct report *rep)
637 {
638         struct perf_session *session = rep->session;
639
640         perf_session__fprintf_nr_events(session, stdout);
641         return 0;
642 }
643
644 static void tasks_setup(struct report *rep)
645 {
646         memset(&rep->tool, 0, sizeof(rep->tool));
647         rep->tool.ordered_events = true;
648         if (rep->mmaps_mode) {
649                 rep->tool.mmap = perf_event__process_mmap;
650                 rep->tool.mmap2 = perf_event__process_mmap2;
651         }
652         rep->tool.comm = perf_event__process_comm;
653         rep->tool.exit = perf_event__process_exit;
654         rep->tool.fork = perf_event__process_fork;
655         rep->tool.no_warn = true;
656 }
657
658 struct task {
659         struct thread           *thread;
660         struct list_head         list;
661         struct list_head         children;
662 };
663
664 static struct task *tasks_list(struct task *task, struct machine *machine)
665 {
666         struct thread *parent_thread, *thread = task->thread;
667         struct task   *parent_task;
668
669         /* Already listed. */
670         if (!list_empty(&task->list))
671                 return NULL;
672
673         /* Last one in the chain. */
674         if (thread->ppid == -1)
675                 return task;
676
677         parent_thread = machine__find_thread(machine, -1, thread->ppid);
678         if (!parent_thread)
679                 return ERR_PTR(-ENOENT);
680
681         parent_task = thread__priv(parent_thread);
682         list_add_tail(&task->list, &parent_task->children);
683         return tasks_list(parent_task, machine);
684 }
685
686 static size_t maps__fprintf_task(struct maps *maps, int indent, FILE *fp)
687 {
688         size_t printed = 0;
689         struct rb_node *nd;
690
691         for (nd = rb_first(&maps->entries); nd; nd = rb_next(nd)) {
692                 struct map *map = rb_entry(nd, struct map, rb_node);
693
694                 printed += fprintf(fp, "%*s  %" PRIx64 "-%" PRIx64 " %c%c%c%c %08" PRIx64 " %" PRIu64 " %s\n",
695                                    indent, "", map->start, map->end,
696                                    map->prot & PROT_READ ? 'r' : '-',
697                                    map->prot & PROT_WRITE ? 'w' : '-',
698                                    map->prot & PROT_EXEC ? 'x' : '-',
699                                    map->flags & MAP_SHARED ? 's' : 'p',
700                                    map->pgoff,
701                                    map->ino, map->dso->name);
702         }
703
704         return printed;
705 }
706
707 static int map_groups__fprintf_task(struct map_groups *mg, int indent, FILE *fp)
708 {
709         return maps__fprintf_task(&mg->maps, indent, fp);
710 }
711
712 static void task__print_level(struct task *task, FILE *fp, int level)
713 {
714         struct thread *thread = task->thread;
715         struct task *child;
716         int comm_indent = fprintf(fp, "  %8d %8d %8d |%*s",
717                                   thread->pid_, thread->tid, thread->ppid,
718                                   level, "");
719
720         fprintf(fp, "%s\n", thread__comm_str(thread));
721
722         map_groups__fprintf_task(thread->mg, comm_indent, fp);
723
724         if (!list_empty(&task->children)) {
725                 list_for_each_entry(child, &task->children, list)
726                         task__print_level(child, fp, level + 1);
727         }
728 }
729
730 static int tasks_print(struct report *rep, FILE *fp)
731 {
732         struct perf_session *session = rep->session;
733         struct machine      *machine = &session->machines.host;
734         struct task *tasks, *task;
735         unsigned int nr = 0, itask = 0, i;
736         struct rb_node *nd;
737         LIST_HEAD(list);
738
739         /*
740          * No locking needed while accessing machine->threads,
741          * because --tasks is single threaded command.
742          */
743
744         /* Count all the threads. */
745         for (i = 0; i < THREADS__TABLE_SIZE; i++)
746                 nr += machine->threads[i].nr;
747
748         tasks = malloc(sizeof(*tasks) * nr);
749         if (!tasks)
750                 return -ENOMEM;
751
752         for (i = 0; i < THREADS__TABLE_SIZE; i++) {
753                 struct threads *threads = &machine->threads[i];
754
755                 for (nd = rb_first(&threads->entries); nd; nd = rb_next(nd)) {
756                         task = tasks + itask++;
757
758                         task->thread = rb_entry(nd, struct thread, rb_node);
759                         INIT_LIST_HEAD(&task->children);
760                         INIT_LIST_HEAD(&task->list);
761                         thread__set_priv(task->thread, task);
762                 }
763         }
764
765         /*
766          * Iterate every task down to the unprocessed parent
767          * and link all in task children list. Task with no
768          * parent is added into 'list'.
769          */
770         for (itask = 0; itask < nr; itask++) {
771                 task = tasks + itask;
772
773                 if (!list_empty(&task->list))
774                         continue;
775
776                 task = tasks_list(task, machine);
777                 if (IS_ERR(task)) {
778                         pr_err("Error: failed to process tasks\n");
779                         free(tasks);
780                         return PTR_ERR(task);
781                 }
782
783                 if (task)
784                         list_add_tail(&task->list, &list);
785         }
786
787         fprintf(fp, "# %8s %8s %8s  %s\n", "pid", "tid", "ppid", "comm");
788
789         list_for_each_entry(task, &list, list)
790                 task__print_level(task, fp, 0);
791
792         free(tasks);
793         return 0;
794 }
795
796 static int __cmd_report(struct report *rep)
797 {
798         int ret;
799         struct perf_session *session = rep->session;
800         struct perf_evsel *pos;
801         struct perf_data *data = session->data;
802
803         signal(SIGINT, sig_handler);
804
805         if (rep->cpu_list) {
806                 ret = perf_session__cpu_bitmap(session, rep->cpu_list,
807                                                rep->cpu_bitmap);
808                 if (ret) {
809                         ui__error("failed to set cpu bitmap\n");
810                         return ret;
811                 }
812                 session->itrace_synth_opts->cpu_bitmap = rep->cpu_bitmap;
813         }
814
815         if (rep->show_threads) {
816                 ret = perf_read_values_init(&rep->show_threads_values);
817                 if (ret)
818                         return ret;
819         }
820
821         ret = report__setup_sample_type(rep);
822         if (ret) {
823                 /* report__setup_sample_type() already showed error message */
824                 return ret;
825         }
826
827         if (rep->stats_mode)
828                 stats_setup(rep);
829
830         if (rep->tasks_mode)
831                 tasks_setup(rep);
832
833         ret = perf_session__process_events(session);
834         if (ret) {
835                 ui__error("failed to process sample\n");
836                 return ret;
837         }
838
839         if (rep->stats_mode)
840                 return stats_print(rep);
841
842         if (rep->tasks_mode)
843                 return tasks_print(rep, stdout);
844
845         report__warn_kptr_restrict(rep);
846
847         evlist__for_each_entry(session->evlist, pos)
848                 rep->nr_entries += evsel__hists(pos)->nr_entries;
849
850         if (use_browser == 0) {
851                 if (verbose > 3)
852                         perf_session__fprintf(session, stdout);
853
854                 if (verbose > 2)
855                         perf_session__fprintf_dsos(session, stdout);
856
857                 if (dump_trace) {
858                         perf_session__fprintf_nr_events(session, stdout);
859                         perf_evlist__fprintf_nr_events(session->evlist, stdout);
860                         return 0;
861                 }
862         }
863
864         ret = report__collapse_hists(rep);
865         if (ret) {
866                 ui__error("failed to process hist entry\n");
867                 return ret;
868         }
869
870         if (session_done())
871                 return 0;
872
873         /*
874          * recalculate number of entries after collapsing since it
875          * might be changed during the collapse phase.
876          */
877         rep->nr_entries = 0;
878         evlist__for_each_entry(session->evlist, pos)
879                 rep->nr_entries += evsel__hists(pos)->nr_entries;
880
881         if (rep->nr_entries == 0) {
882                 ui__error("The %s file has no samples!\n", data->file.path);
883                 return 0;
884         }
885
886         report__output_resort(rep);
887
888         return report__browse_hists(rep);
889 }
890
891 static int
892 report_parse_callchain_opt(const struct option *opt, const char *arg, int unset)
893 {
894         struct callchain_param *callchain = opt->value;
895
896         callchain->enabled = !unset;
897         /*
898          * --no-call-graph
899          */
900         if (unset) {
901                 symbol_conf.use_callchain = false;
902                 callchain->mode = CHAIN_NONE;
903                 return 0;
904         }
905
906         return parse_callchain_report_opt(arg);
907 }
908
909 int
910 report_parse_ignore_callees_opt(const struct option *opt __maybe_unused,
911                                 const char *arg, int unset __maybe_unused)
912 {
913         if (arg) {
914                 int err = regcomp(&ignore_callees_regex, arg, REG_EXTENDED);
915                 if (err) {
916                         char buf[BUFSIZ];
917                         regerror(err, &ignore_callees_regex, buf, sizeof(buf));
918                         pr_err("Invalid --ignore-callees regex: %s\n%s", arg, buf);
919                         return -1;
920                 }
921                 have_ignore_callees = 1;
922         }
923
924         return 0;
925 }
926
927 static int
928 parse_branch_mode(const struct option *opt,
929                   const char *str __maybe_unused, int unset)
930 {
931         int *branch_mode = opt->value;
932
933         *branch_mode = !unset;
934         return 0;
935 }
936
937 static int
938 parse_percent_limit(const struct option *opt, const char *str,
939                     int unset __maybe_unused)
940 {
941         struct report *rep = opt->value;
942         double pcnt = strtof(str, NULL);
943
944         rep->min_percent = pcnt;
945         callchain_param.min_percent = pcnt;
946         return 0;
947 }
948
949 int cmd_report(int argc, const char **argv)
950 {
951         struct perf_session *session;
952         struct itrace_synth_opts itrace_synth_opts = { .set = 0, };
953         struct stat st;
954         bool has_br_stack = false;
955         int branch_mode = -1;
956         bool branch_call_mode = false;
957 #define CALLCHAIN_DEFAULT_OPT  "graph,0.5,caller,function,percent"
958         const char report_callchain_help[] = "Display call graph (stack chain/backtrace):\n\n"
959                                              CALLCHAIN_REPORT_HELP
960                                              "\n\t\t\t\tDefault: " CALLCHAIN_DEFAULT_OPT;
961         char callchain_default_opt[] = CALLCHAIN_DEFAULT_OPT;
962         const char * const report_usage[] = {
963                 "perf report [<options>]",
964                 NULL
965         };
966         struct report report = {
967                 .tool = {
968                         .sample          = process_sample_event,
969                         .mmap            = perf_event__process_mmap,
970                         .mmap2           = perf_event__process_mmap2,
971                         .comm            = perf_event__process_comm,
972                         .namespaces      = perf_event__process_namespaces,
973                         .exit            = perf_event__process_exit,
974                         .fork            = perf_event__process_fork,
975                         .lost            = perf_event__process_lost,
976                         .read            = process_read_event,
977                         .attr            = perf_event__process_attr,
978                         .tracing_data    = perf_event__process_tracing_data,
979                         .build_id        = perf_event__process_build_id,
980                         .id_index        = perf_event__process_id_index,
981                         .auxtrace_info   = perf_event__process_auxtrace_info,
982                         .auxtrace        = perf_event__process_auxtrace,
983                         .event_update    = perf_event__process_event_update,
984                         .feature         = process_feature_event,
985                         .ordered_events  = true,
986                         .ordering_requires_timestamps = true,
987                 },
988                 .max_stack               = PERF_MAX_STACK_DEPTH,
989                 .pretty_printing_style   = "normal",
990                 .socket_filter           = -1,
991                 .annotation_opts         = annotation__default_options,
992         };
993         const struct option options[] = {
994         OPT_STRING('i', "input", &input_name, "file",
995                     "input file name"),
996         OPT_INCR('v', "verbose", &verbose,
997                     "be more verbose (show symbol address, etc)"),
998         OPT_BOOLEAN('q', "quiet", &quiet, "Do not show any message"),
999         OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
1000                     "dump raw trace in ASCII"),
1001         OPT_BOOLEAN(0, "stats", &report.stats_mode, "Display event stats"),
1002         OPT_BOOLEAN(0, "tasks", &report.tasks_mode, "Display recorded tasks"),
1003         OPT_BOOLEAN(0, "mmaps", &report.mmaps_mode, "Display recorded tasks memory maps"),
1004         OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
1005                    "file", "vmlinux pathname"),
1006         OPT_BOOLEAN(0, "ignore-vmlinux", &symbol_conf.ignore_vmlinux,
1007                     "don't load vmlinux even if found"),
1008         OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name,
1009                    "file", "kallsyms pathname"),
1010         OPT_BOOLEAN('f', "force", &symbol_conf.force, "don't complain, do it"),
1011         OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
1012                     "load module symbols - WARNING: use only with -k and LIVE kernel"),
1013         OPT_BOOLEAN('n', "show-nr-samples", &symbol_conf.show_nr_samples,
1014                     "Show a column with the number of samples"),
1015         OPT_BOOLEAN('T', "threads", &report.show_threads,
1016                     "Show per-thread event counters"),
1017         OPT_STRING(0, "pretty", &report.pretty_printing_style, "key",
1018                    "pretty printing style key: normal raw"),
1019         OPT_BOOLEAN(0, "tui", &report.use_tui, "Use the TUI interface"),
1020         OPT_BOOLEAN(0, "gtk", &report.use_gtk, "Use the GTK2 interface"),
1021         OPT_BOOLEAN(0, "stdio", &report.use_stdio,
1022                     "Use the stdio interface"),
1023         OPT_BOOLEAN(0, "header", &report.header, "Show data header."),
1024         OPT_BOOLEAN(0, "header-only", &report.header_only,
1025                     "Show only data header."),
1026         OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
1027                    "sort by key(s): pid, comm, dso, symbol, parent, cpu, srcline, ..."
1028                    " Please refer the man page for the complete list."),
1029         OPT_STRING('F', "fields", &field_order, "key[,keys...]",
1030                    "output field(s): overhead, period, sample plus all of sort keys"),
1031         OPT_BOOLEAN(0, "show-cpu-utilization", &symbol_conf.show_cpu_utilization,
1032                     "Show sample percentage for different cpu modes"),
1033         OPT_BOOLEAN_FLAG(0, "showcpuutilization", &symbol_conf.show_cpu_utilization,
1034                     "Show sample percentage for different cpu modes", PARSE_OPT_HIDDEN),
1035         OPT_STRING('p', "parent", &parent_pattern, "regex",
1036                    "regex filter to identify parent, see: '--sort parent'"),
1037         OPT_BOOLEAN('x', "exclude-other", &symbol_conf.exclude_other,
1038                     "Only display entries with parent-match"),
1039         OPT_CALLBACK_DEFAULT('g', "call-graph", &callchain_param,
1040                              "print_type,threshold[,print_limit],order,sort_key[,branch],value",
1041                              report_callchain_help, &report_parse_callchain_opt,
1042                              callchain_default_opt),
1043         OPT_BOOLEAN(0, "children", &symbol_conf.cumulate_callchain,
1044                     "Accumulate callchains of children and show total overhead as well"),
1045         OPT_INTEGER(0, "max-stack", &report.max_stack,
1046                     "Set the maximum stack depth when parsing the callchain, "
1047                     "anything beyond the specified depth will be ignored. "
1048                     "Default: kernel.perf_event_max_stack or " __stringify(PERF_MAX_STACK_DEPTH)),
1049         OPT_BOOLEAN('G', "inverted", &report.inverted_callchain,
1050                     "alias for inverted call graph"),
1051         OPT_CALLBACK(0, "ignore-callees", NULL, "regex",
1052                    "ignore callees of these functions in call graphs",
1053                    report_parse_ignore_callees_opt),
1054         OPT_STRING('d', "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
1055                    "only consider symbols in these dsos"),
1056         OPT_STRING('c', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
1057                    "only consider symbols in these comms"),
1058         OPT_STRING(0, "pid", &symbol_conf.pid_list_str, "pid[,pid...]",
1059                    "only consider symbols in these pids"),
1060         OPT_STRING(0, "tid", &symbol_conf.tid_list_str, "tid[,tid...]",
1061                    "only consider symbols in these tids"),
1062         OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
1063                    "only consider these symbols"),
1064         OPT_STRING(0, "symbol-filter", &report.symbol_filter_str, "filter",
1065                    "only show symbols that (partially) match with this filter"),
1066         OPT_STRING('w', "column-widths", &symbol_conf.col_width_list_str,
1067                    "width[,width...]",
1068                    "don't try to adjust column width, use these fixed values"),
1069         OPT_STRING_NOEMPTY('t', "field-separator", &symbol_conf.field_sep, "separator",
1070                    "separator for columns, no spaces will be added between "
1071                    "columns '.' is reserved."),
1072         OPT_BOOLEAN('U', "hide-unresolved", &symbol_conf.hide_unresolved,
1073                     "Only display entries resolved to a symbol"),
1074         OPT_CALLBACK(0, "symfs", NULL, "directory",
1075                      "Look for files with symbols relative to this directory",
1076                      symbol__config_symfs),
1077         OPT_STRING('C', "cpu", &report.cpu_list, "cpu",
1078                    "list of cpus to profile"),
1079         OPT_BOOLEAN('I', "show-info", &report.show_full_info,
1080                     "Display extended information about perf.data file"),
1081         OPT_BOOLEAN(0, "source", &report.annotation_opts.annotate_src,
1082                     "Interleave source code with assembly code (default)"),
1083         OPT_BOOLEAN(0, "asm-raw", &report.annotation_opts.show_asm_raw,
1084                     "Display raw encoding of assembly instructions (default)"),
1085         OPT_STRING('M', "disassembler-style", &report.annotation_opts.disassembler_style, "disassembler style",
1086                    "Specify disassembler style (e.g. -M intel for intel syntax)"),
1087         OPT_BOOLEAN(0, "show-total-period", &symbol_conf.show_total_period,
1088                     "Show a column with the sum of periods"),
1089         OPT_BOOLEAN_SET(0, "group", &symbol_conf.event_group, &report.group_set,
1090                     "Show event group information together"),
1091         OPT_CALLBACK_NOOPT('b', "branch-stack", &branch_mode, "",
1092                     "use branch records for per branch histogram filling",
1093                     parse_branch_mode),
1094         OPT_BOOLEAN(0, "branch-history", &branch_call_mode,
1095                     "add last branch records to call history"),
1096         OPT_STRING(0, "objdump", &report.annotation_opts.objdump_path, "path",
1097                    "objdump binary to use for disassembly and annotations"),
1098         OPT_BOOLEAN(0, "demangle", &symbol_conf.demangle,
1099                     "Disable symbol demangling"),
1100         OPT_BOOLEAN(0, "demangle-kernel", &symbol_conf.demangle_kernel,
1101                     "Enable kernel symbol demangling"),
1102         OPT_BOOLEAN(0, "mem-mode", &report.mem_mode, "mem access profile"),
1103         OPT_CALLBACK(0, "percent-limit", &report, "percent",
1104                      "Don't show entries under that percent", parse_percent_limit),
1105         OPT_CALLBACK(0, "percentage", NULL, "relative|absolute",
1106                      "how to display percentage of filtered entries", parse_filter_percentage),
1107         OPT_CALLBACK_OPTARG(0, "itrace", &itrace_synth_opts, NULL, "opts",
1108                             "Instruction Tracing options\n" ITRACE_HELP,
1109                             itrace_parse_synth_opts),
1110         OPT_BOOLEAN(0, "full-source-path", &srcline_full_filename,
1111                         "Show full source file name path for source lines"),
1112         OPT_BOOLEAN(0, "show-ref-call-graph", &symbol_conf.show_ref_callgraph,
1113                     "Show callgraph from reference event"),
1114         OPT_INTEGER(0, "socket-filter", &report.socket_filter,
1115                     "only show processor socket that match with this filter"),
1116         OPT_BOOLEAN(0, "raw-trace", &symbol_conf.raw_trace,
1117                     "Show raw trace event output (do not use print fmt or plugins)"),
1118         OPT_BOOLEAN(0, "hierarchy", &symbol_conf.report_hierarchy,
1119                     "Show entries in a hierarchy"),
1120         OPT_CALLBACK_DEFAULT(0, "stdio-color", NULL, "mode",
1121                              "'always' (default), 'never' or 'auto' only applicable to --stdio mode",
1122                              stdio__config_color, "always"),
1123         OPT_STRING(0, "time", &report.time_str, "str",
1124                    "Time span of interest (start,stop)"),
1125         OPT_BOOLEAN(0, "inline", &symbol_conf.inline_name,
1126                     "Show inline function"),
1127         OPT_CALLBACK(0, "percent-type", &report.annotation_opts, "local-period",
1128                      "Set percent type local/global-period/hits",
1129                      annotate_parse_percent_type),
1130         OPT_END()
1131         };
1132         struct perf_data data = {
1133                 .mode  = PERF_DATA_MODE_READ,
1134         };
1135         int ret = hists__init();
1136
1137         if (ret < 0)
1138                 return ret;
1139
1140         ret = perf_config(report__config, &report);
1141         if (ret)
1142                 return ret;
1143
1144         argc = parse_options(argc, argv, options, report_usage, 0);
1145         if (argc) {
1146                 /*
1147                  * Special case: if there's an argument left then assume that
1148                  * it's a symbol filter:
1149                  */
1150                 if (argc > 1)
1151                         usage_with_options(report_usage, options);
1152
1153                 report.symbol_filter_str = argv[0];
1154         }
1155
1156         if (report.mmaps_mode)
1157                 report.tasks_mode = true;
1158
1159         if (quiet)
1160                 perf_quiet_option();
1161
1162         if (symbol_conf.vmlinux_name &&
1163             access(symbol_conf.vmlinux_name, R_OK)) {
1164                 pr_err("Invalid file: %s\n", symbol_conf.vmlinux_name);
1165                 return -EINVAL;
1166         }
1167         if (symbol_conf.kallsyms_name &&
1168             access(symbol_conf.kallsyms_name, R_OK)) {
1169                 pr_err("Invalid file: %s\n", symbol_conf.kallsyms_name);
1170                 return -EINVAL;
1171         }
1172
1173         if (report.inverted_callchain)
1174                 callchain_param.order = ORDER_CALLER;
1175         if (symbol_conf.cumulate_callchain && !callchain_param.order_set)
1176                 callchain_param.order = ORDER_CALLER;
1177
1178         if (itrace_synth_opts.callchain &&
1179             (int)itrace_synth_opts.callchain_sz > report.max_stack)
1180                 report.max_stack = itrace_synth_opts.callchain_sz;
1181
1182         if (!input_name || !strlen(input_name)) {
1183                 if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
1184                         input_name = "-";
1185                 else
1186                         input_name = "perf.data";
1187         }
1188
1189         data.file.path = input_name;
1190         data.force     = symbol_conf.force;
1191
1192 repeat:
1193         session = perf_session__new(&data, false, &report.tool);
1194         if (session == NULL)
1195                 return -1;
1196
1197         if (report.queue_size) {
1198                 ordered_events__set_alloc_size(&session->ordered_events,
1199                                                report.queue_size);
1200         }
1201
1202         session->itrace_synth_opts = &itrace_synth_opts;
1203
1204         report.session = session;
1205
1206         has_br_stack = perf_header__has_feat(&session->header,
1207                                              HEADER_BRANCH_STACK);
1208
1209         setup_forced_leader(&report, session->evlist);
1210
1211         if (itrace_synth_opts.last_branch)
1212                 has_br_stack = true;
1213
1214         if (has_br_stack && branch_call_mode)
1215                 symbol_conf.show_branchflag_count = true;
1216
1217         memset(&report.brtype_stat, 0, sizeof(struct branch_type_stat));
1218
1219         /*
1220          * Branch mode is a tristate:
1221          * -1 means default, so decide based on the file having branch data.
1222          * 0/1 means the user chose a mode.
1223          */
1224         if (((branch_mode == -1 && has_br_stack) || branch_mode == 1) &&
1225             !branch_call_mode) {
1226                 sort__mode = SORT_MODE__BRANCH;
1227                 symbol_conf.cumulate_callchain = false;
1228         }
1229         if (branch_call_mode) {
1230                 callchain_param.key = CCKEY_ADDRESS;
1231                 callchain_param.branch_callstack = 1;
1232                 symbol_conf.use_callchain = true;
1233                 callchain_register_param(&callchain_param);
1234                 if (sort_order == NULL)
1235                         sort_order = "srcline,symbol,dso";
1236         }
1237
1238         if (report.mem_mode) {
1239                 if (sort__mode == SORT_MODE__BRANCH) {
1240                         pr_err("branch and mem mode incompatible\n");
1241                         goto error;
1242                 }
1243                 sort__mode = SORT_MODE__MEMORY;
1244                 symbol_conf.cumulate_callchain = false;
1245         }
1246
1247         if (symbol_conf.report_hierarchy) {
1248                 /* disable incompatible options */
1249                 symbol_conf.cumulate_callchain = false;
1250
1251                 if (field_order) {
1252                         pr_err("Error: --hierarchy and --fields options cannot be used together\n");
1253                         parse_options_usage(report_usage, options, "F", 1);
1254                         parse_options_usage(NULL, options, "hierarchy", 0);
1255                         goto error;
1256                 }
1257
1258                 perf_hpp_list.need_collapse = true;
1259         }
1260
1261         if (report.use_stdio)
1262                 use_browser = 0;
1263         else if (report.use_tui)
1264                 use_browser = 1;
1265         else if (report.use_gtk)
1266                 use_browser = 2;
1267
1268         /* Force tty output for header output and per-thread stat. */
1269         if (report.header || report.header_only || report.show_threads)
1270                 use_browser = 0;
1271         if (report.header || report.header_only)
1272                 report.tool.show_feat_hdr = SHOW_FEAT_HEADER;
1273         if (report.show_full_info)
1274                 report.tool.show_feat_hdr = SHOW_FEAT_HEADER_FULL_INFO;
1275         if (report.stats_mode || report.tasks_mode)
1276                 use_browser = 0;
1277         if (report.stats_mode && report.tasks_mode) {
1278                 pr_err("Error: --tasks and --mmaps can't be used together with --stats\n");
1279                 goto error;
1280         }
1281
1282         if (strcmp(input_name, "-") != 0)
1283                 setup_browser(true);
1284         else
1285                 use_browser = 0;
1286
1287         if (setup_sorting(session->evlist) < 0) {
1288                 if (sort_order)
1289                         parse_options_usage(report_usage, options, "s", 1);
1290                 if (field_order)
1291                         parse_options_usage(sort_order ? NULL : report_usage,
1292                                             options, "F", 1);
1293                 goto error;
1294         }
1295
1296         if ((report.header || report.header_only) && !quiet) {
1297                 perf_session__fprintf_info(session, stdout,
1298                                            report.show_full_info);
1299                 if (report.header_only) {
1300                         ret = 0;
1301                         goto error;
1302                 }
1303         } else if (use_browser == 0 && !quiet &&
1304                    !report.stats_mode && !report.tasks_mode) {
1305                 fputs("# To display the perf.data header info, please use --header/--header-only options.\n#\n",
1306                       stdout);
1307         }
1308
1309         /*
1310          * Only in the TUI browser we are doing integrated annotation,
1311          * so don't allocate extra space that won't be used in the stdio
1312          * implementation.
1313          */
1314         if (ui__has_annotation()) {
1315                 ret = symbol__annotation_init();
1316                 if (ret < 0)
1317                         goto error;
1318                 /*
1319                  * For searching by name on the "Browse map details".
1320                  * providing it only in verbose mode not to bloat too
1321                  * much struct symbol.
1322                  */
1323                 if (verbose > 0) {
1324                         /*
1325                          * XXX: Need to provide a less kludgy way to ask for
1326                          * more space per symbol, the u32 is for the index on
1327                          * the ui browser.
1328                          * See symbol__browser_index.
1329                          */
1330                         symbol_conf.priv_size += sizeof(u32);
1331                         symbol_conf.sort_by_name = true;
1332                 }
1333                 annotation_config__init();
1334         }
1335
1336         if (symbol__init(&session->header.env) < 0)
1337                 goto error;
1338
1339         report.ptime_range = perf_time__range_alloc(report.time_str,
1340                                                     &report.range_size);
1341         if (!report.ptime_range) {
1342                 ret = -ENOMEM;
1343                 goto error;
1344         }
1345
1346         if (perf_time__parse_str(report.ptime_range, report.time_str) != 0) {
1347                 if (session->evlist->first_sample_time == 0 &&
1348                     session->evlist->last_sample_time == 0) {
1349                         pr_err("HINT: no first/last sample time found in perf data.\n"
1350                                "Please use latest perf binary to execute 'perf record'\n"
1351                                "(if '--buildid-all' is enabled, please set '--timestamp-boundary').\n");
1352                         ret = -EINVAL;
1353                         goto error;
1354                 }
1355
1356                 report.range_num = perf_time__percent_parse_str(
1357                                         report.ptime_range, report.range_size,
1358                                         report.time_str,
1359                                         session->evlist->first_sample_time,
1360                                         session->evlist->last_sample_time);
1361
1362                 if (report.range_num < 0) {
1363                         pr_err("Invalid time string\n");
1364                         ret = -EINVAL;
1365                         goto error;
1366                 }
1367         } else {
1368                 report.range_num = 1;
1369         }
1370
1371         if (session->tevent.pevent &&
1372             tep_set_function_resolver(session->tevent.pevent,
1373                                       machine__resolve_kernel_addr,
1374                                       &session->machines.host) < 0) {
1375                 pr_err("%s: failed to set libtraceevent function resolver\n",
1376                        __func__);
1377                 return -1;
1378         }
1379
1380         sort__setup_elide(stdout);
1381
1382         ret = __cmd_report(&report);
1383         if (ret == K_SWITCH_INPUT_DATA) {
1384                 perf_session__delete(session);
1385                 goto repeat;
1386         } else
1387                 ret = 0;
1388
1389 error:
1390         zfree(&report.ptime_range);
1391
1392         perf_session__delete(session);
1393         return ret;
1394 }