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Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[cris-mirror.git] / tools / perf / builtin-report.c
blob4ad5dc649716eb7a0a865a1e0af07175d87928c8
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 int max_stack;
72 struct perf_read_values show_threads_values;
73 const char *pretty_printing_style;
74 const char *cpu_list;
75 const char *symbol_filter_str;
76 const char *time_str;
77 struct perf_time_interval *ptime_range;
78 int range_size;
79 int range_num;
80 float min_percent;
81 u64 nr_entries;
82 u64 queue_size;
83 int socket_filter;
84 DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
85 struct branch_type_stat brtype_stat;
86 };
87
88 static int report__config(const char *var, const char *value, void *cb)
89 {
90 struct report *rep = cb;
91
92 if (!strcmp(var, "report.group")) {
93 symbol_conf.event_group = perf_config_bool(var, value);
94 return 0;
95 }
96 if (!strcmp(var, "report.percent-limit")) {
97 double pcnt = strtof(value, NULL);
98
99 rep->min_percent = pcnt;
100 callchain_param.min_percent = pcnt;
101 return 0;
102 }
103 if (!strcmp(var, "report.children")) {
104 symbol_conf.cumulate_callchain = perf_config_bool(var, value);
105 return 0;
106 }
107 if (!strcmp(var, "report.queue-size"))
108 return perf_config_u64(&rep->queue_size, var, value);
109
110 if (!strcmp(var, "report.sort_order")) {
111 default_sort_order = strdup(value);
112 return 0;
113 }
114
115 return 0;
116 }
117
118 static int hist_iter__report_callback(struct hist_entry_iter *iter,
119 struct addr_location *al, bool single,
120 void *arg)
121 {
122 int err = 0;
123 struct report *rep = arg;
124 struct hist_entry *he = iter->he;
125 struct perf_evsel *evsel = iter->evsel;
126 struct perf_sample *sample = iter->sample;
127 struct mem_info *mi;
128 struct branch_info *bi;
129
130 if (!ui__has_annotation())
131 return 0;
132
133 hist__account_cycles(sample->branch_stack, al, sample,
134 rep->nonany_branch_mode);
135
136 if (sort__mode == SORT_MODE__BRANCH) {
137 bi = he->branch_info;
138 err = addr_map_symbol__inc_samples(&bi->from, sample, evsel->idx);
139 if (err)
140 goto out;
141
142 err = addr_map_symbol__inc_samples(&bi->to, sample, evsel->idx);
143
144 } else if (rep->mem_mode) {
145 mi = he->mem_info;
146 err = addr_map_symbol__inc_samples(&mi->daddr, sample, evsel->idx);
147 if (err)
148 goto out;
149
150 err = hist_entry__inc_addr_samples(he, sample, evsel->idx, al->addr);
151
152 } else if (symbol_conf.cumulate_callchain) {
153 if (single)
154 err = hist_entry__inc_addr_samples(he, sample, evsel->idx,
155 al->addr);
156 } else {
157 err = hist_entry__inc_addr_samples(he, sample, evsel->idx, al->addr);
158 }
159
160 out:
161 return err;
162 }
163
164 static int hist_iter__branch_callback(struct hist_entry_iter *iter,
165 struct addr_location *al __maybe_unused,
166 bool single __maybe_unused,
167 void *arg)
168 {
169 struct hist_entry *he = iter->he;
170 struct report *rep = arg;
171 struct branch_info *bi;
172 struct perf_sample *sample = iter->sample;
173 struct perf_evsel *evsel = iter->evsel;
174 int err;
175
176 if (!ui__has_annotation())
177 return 0;
178
179 hist__account_cycles(sample->branch_stack, al, sample,
180 rep->nonany_branch_mode);
181
182 bi = he->branch_info;
183 err = addr_map_symbol__inc_samples(&bi->from, sample, evsel->idx);
184 if (err)
185 goto out;
186
187 err = addr_map_symbol__inc_samples(&bi->to, sample, evsel->idx);
188
189 branch_type_count(&rep->brtype_stat, &bi->flags,
190 bi->from.addr, bi->to.addr);
191
192 out:
193 return err;
194 }
195
196 static int process_sample_event(struct perf_tool *tool,
197 union perf_event *event,
198 struct perf_sample *sample,
199 struct perf_evsel *evsel,
200 struct machine *machine)
201 {
202 struct report *rep = container_of(tool, struct report, tool);
203 struct addr_location al;
204 struct hist_entry_iter iter = {
205 .evsel = evsel,
206 .sample = sample,
207 .hide_unresolved = symbol_conf.hide_unresolved,
208 .add_entry_cb = hist_iter__report_callback,
209 };
210 int ret = 0;
211
212 if (perf_time__ranges_skip_sample(rep->ptime_range, rep->range_num,
213 sample->time)) {
214 return 0;
215 }
216
217 if (machine__resolve(machine, &al, sample) < 0) {
218 pr_debug("problem processing %d event, skipping it.\n",
219 event->header.type);
220 return -1;
221 }
222
223 if (symbol_conf.hide_unresolved && al.sym == NULL)
224 goto out_put;
225
226 if (rep->cpu_list && !test_bit(sample->cpu, rep->cpu_bitmap))
227 goto out_put;
228
229 if (sort__mode == SORT_MODE__BRANCH) {
230 /*
231 * A non-synthesized event might not have a branch stack if
232 * branch stacks have been synthesized (using itrace options).
233 */
234 if (!sample->branch_stack)
235 goto out_put;
236
237 iter.add_entry_cb = hist_iter__branch_callback;
238 iter.ops = &hist_iter_branch;
239 } else if (rep->mem_mode) {
240 iter.ops = &hist_iter_mem;
241 } else if (symbol_conf.cumulate_callchain) {
242 iter.ops = &hist_iter_cumulative;
243 } else {
244 iter.ops = &hist_iter_normal;
245 }
246
247 if (al.map != NULL)
248 al.map->dso->hit = 1;
249
250 ret = hist_entry_iter__add(&iter, &al, rep->max_stack, rep);
251 if (ret < 0)
252 pr_debug("problem adding hist entry, skipping event\n");
253 out_put:
254 addr_location__put(&al);
255 return ret;
256 }
257
258 static int process_read_event(struct perf_tool *tool,
259 union perf_event *event,
260 struct perf_sample *sample __maybe_unused,
261 struct perf_evsel *evsel,
262 struct machine *machine __maybe_unused)
263 {
264 struct report *rep = container_of(tool, struct report, tool);
265
266 if (rep->show_threads) {
267 const char *name = evsel ? perf_evsel__name(evsel) : "unknown";
268 int err = perf_read_values_add_value(&rep->show_threads_values,
269 event->read.pid, event->read.tid,
270 evsel->idx,
271 name,
272 event->read.value);
273
274 if (err)
275 return err;
276 }
277
278 return 0;
279 }
280
281 /* For pipe mode, sample_type is not currently set */
282 static int report__setup_sample_type(struct report *rep)
283 {
284 struct perf_session *session = rep->session;
285 u64 sample_type = perf_evlist__combined_sample_type(session->evlist);
286 bool is_pipe = perf_data__is_pipe(session->data);
287
288 if (session->itrace_synth_opts->callchain ||
289 (!is_pipe &&
290 perf_header__has_feat(&session->header, HEADER_AUXTRACE) &&
291 !session->itrace_synth_opts->set))
292 sample_type |= PERF_SAMPLE_CALLCHAIN;
293
294 if (session->itrace_synth_opts->last_branch)
295 sample_type |= PERF_SAMPLE_BRANCH_STACK;
296
297 if (!is_pipe && !(sample_type & PERF_SAMPLE_CALLCHAIN)) {
298 if (perf_hpp_list.parent) {
299 ui__error("Selected --sort parent, but no "
300 "callchain data. Did you call "
301 "'perf record' without -g?\n");
302 return -EINVAL;
303 }
304 if (symbol_conf.use_callchain &&
305 !symbol_conf.show_branchflag_count) {
306 ui__error("Selected -g or --branch-history.\n"
307 "But no callchain or branch data.\n"
308 "Did you call 'perf record' without -g or -b?\n");
309 return -1;
310 }
311 } else if (!callchain_param.enabled &&
312 callchain_param.mode != CHAIN_NONE &&
313 !symbol_conf.use_callchain) {
314 symbol_conf.use_callchain = true;
315 if (callchain_register_param(&callchain_param) < 0) {
316 ui__error("Can't register callchain params.\n");
317 return -EINVAL;
318 }
319 }
320
321 if (symbol_conf.cumulate_callchain) {
322 /* Silently ignore if callchain is missing */
323 if (!(sample_type & PERF_SAMPLE_CALLCHAIN)) {
324 symbol_conf.cumulate_callchain = false;
325 perf_hpp__cancel_cumulate();
326 }
327 }
328
329 if (sort__mode == SORT_MODE__BRANCH) {
330 if (!is_pipe &&
331 !(sample_type & PERF_SAMPLE_BRANCH_STACK)) {
332 ui__error("Selected -b but no branch data. "
333 "Did you call perf record without -b?\n");
334 return -1;
335 }
336 }
337
338 if (symbol_conf.use_callchain || symbol_conf.cumulate_callchain) {
339 if ((sample_type & PERF_SAMPLE_REGS_USER) &&
340 (sample_type & PERF_SAMPLE_STACK_USER)) {
341 callchain_param.record_mode = CALLCHAIN_DWARF;
342 dwarf_callchain_users = true;
343 } else if (sample_type & PERF_SAMPLE_BRANCH_STACK)
344 callchain_param.record_mode = CALLCHAIN_LBR;
345 else
346 callchain_param.record_mode = CALLCHAIN_FP;
347 }
348
349 /* ??? handle more cases than just ANY? */
350 if (!(perf_evlist__combined_branch_type(session->evlist) &
351 PERF_SAMPLE_BRANCH_ANY))
352 rep->nonany_branch_mode = true;
353
354 return 0;
355 }
356
357 static void sig_handler(int sig __maybe_unused)
358 {
359 session_done = 1;
360 }
361
362 static size_t hists__fprintf_nr_sample_events(struct hists *hists, struct report *rep,
363 const char *evname, FILE *fp)
364 {
365 size_t ret;
366 char unit;
367 unsigned long nr_samples = hists->stats.nr_events[PERF_RECORD_SAMPLE];
368 u64 nr_events = hists->stats.total_period;
369 struct perf_evsel *evsel = hists_to_evsel(hists);
370 char buf[512];
371 size_t size = sizeof(buf);
372 int socked_id = hists->socket_filter;
373
374 if (quiet)
375 return 0;
376
377 if (symbol_conf.filter_relative) {
378 nr_samples = hists->stats.nr_non_filtered_samples;
379 nr_events = hists->stats.total_non_filtered_period;
380 }
381
382 if (perf_evsel__is_group_event(evsel)) {
383 struct perf_evsel *pos;
384
385 perf_evsel__group_desc(evsel, buf, size);
386 evname = buf;
387
388 for_each_group_member(pos, evsel) {
389 const struct hists *pos_hists = evsel__hists(pos);
390
391 if (symbol_conf.filter_relative) {
392 nr_samples += pos_hists->stats.nr_non_filtered_samples;
393 nr_events += pos_hists->stats.total_non_filtered_period;
394 } else {
395 nr_samples += pos_hists->stats.nr_events[PERF_RECORD_SAMPLE];
396 nr_events += pos_hists->stats.total_period;
397 }
398 }
399 }
400
401 nr_samples = convert_unit(nr_samples, &unit);
402 ret = fprintf(fp, "# Samples: %lu%c", nr_samples, unit);
403 if (evname != NULL)
404 ret += fprintf(fp, " of event '%s'", evname);
405
406 if (rep->time_str)
407 ret += fprintf(fp, " (time slices: %s)", rep->time_str);
408
409 if (symbol_conf.show_ref_callgraph &&
410 strstr(evname, "call-graph=no")) {
411 ret += fprintf(fp, ", show reference callgraph");
412 }
413
414 if (rep->mem_mode) {
415 ret += fprintf(fp, "\n# Total weight : %" PRIu64, nr_events);
416 ret += fprintf(fp, "\n# Sort order : %s", sort_order ? : default_mem_sort_order);
417 } else
418 ret += fprintf(fp, "\n# Event count (approx.): %" PRIu64, nr_events);
419
420 if (socked_id > -1)
421 ret += fprintf(fp, "\n# Processor Socket: %d", socked_id);
422
423 return ret + fprintf(fp, "\n#\n");
424 }
425
426 static int perf_evlist__tty_browse_hists(struct perf_evlist *evlist,
427 struct report *rep,
428 const char *help)
429 {
430 struct perf_evsel *pos;
431
432 if (!quiet) {
433 fprintf(stdout, "#\n# Total Lost Samples: %" PRIu64 "\n#\n",
434 evlist->stats.total_lost_samples);
435 }
436
437 evlist__for_each_entry(evlist, pos) {
438 struct hists *hists = evsel__hists(pos);
439 const char *evname = perf_evsel__name(pos);
440
441 if (symbol_conf.event_group &&
442 !perf_evsel__is_group_leader(pos))
443 continue;
444
445 hists__fprintf_nr_sample_events(hists, rep, evname, stdout);
446 hists__fprintf(hists, !quiet, 0, 0, rep->min_percent, stdout,
447 symbol_conf.use_callchain ||
448 symbol_conf.show_branchflag_count);
449 fprintf(stdout, "\n\n");
450 }
451
452 if (!quiet)
453 fprintf(stdout, "#\n# (%s)\n#\n", help);
454
455 if (rep->show_threads) {
456 bool style = !strcmp(rep->pretty_printing_style, "raw");
457 perf_read_values_display(stdout, &rep->show_threads_values,
458 style);
459 perf_read_values_destroy(&rep->show_threads_values);
460 }
461
462 if (sort__mode == SORT_MODE__BRANCH)
463 branch_type_stat_display(stdout, &rep->brtype_stat);
464
465 return 0;
466 }
467
468 static void report__warn_kptr_restrict(const struct report *rep)
469 {
470 struct map *kernel_map = machine__kernel_map(&rep->session->machines.host);
471 struct kmap *kernel_kmap = kernel_map ? map__kmap(kernel_map) : NULL;
472
473 if (perf_evlist__exclude_kernel(rep->session->evlist))
474 return;
475
476 if (kernel_map == NULL ||
477 (kernel_map->dso->hit &&
478 (kernel_kmap->ref_reloc_sym == NULL ||
479 kernel_kmap->ref_reloc_sym->addr == 0))) {
480 const char *desc =
481 "As no suitable kallsyms nor vmlinux was found, kernel samples\n"
482 "can't be resolved.";
483
484 if (kernel_map) {
485 const struct dso *kdso = kernel_map->dso;
486 if (!RB_EMPTY_ROOT(&kdso->symbols[MAP__FUNCTION])) {
487 desc = "If some relocation was applied (e.g. "
488 "kexec) symbols may be misresolved.";
489 }
490 }
491
492 ui__warning(
493 "Kernel address maps (/proc/{kallsyms,modules}) were restricted.\n\n"
494 "Check /proc/sys/kernel/kptr_restrict before running 'perf record'.\n\n%s\n\n"
495 "Samples in kernel modules can't be resolved as well.\n\n",
496 desc);
497 }
498 }
499
500 static int report__gtk_browse_hists(struct report *rep, const char *help)
501 {
502 int (*hist_browser)(struct perf_evlist *evlist, const char *help,
503 struct hist_browser_timer *timer, float min_pcnt);
504
505 hist_browser = dlsym(perf_gtk_handle, "perf_evlist__gtk_browse_hists");
506
507 if (hist_browser == NULL) {
508 ui__error("GTK browser not found!\n");
509 return -1;
510 }
511
512 return hist_browser(rep->session->evlist, help, NULL, rep->min_percent);
513 }
514
515 static int report__browse_hists(struct report *rep)
516 {
517 int ret;
518 struct perf_session *session = rep->session;
519 struct perf_evlist *evlist = session->evlist;
520 const char *help = perf_tip(system_path(TIPDIR));
521
522 if (help == NULL) {
523 /* fallback for people who don't install perf ;-) */
524 help = perf_tip(DOCDIR);
525 if (help == NULL)
526 help = "Cannot load tips.txt file, please install perf!";
527 }
528
529 switch (use_browser) {
530 case 1:
531 ret = perf_evlist__tui_browse_hists(evlist, help, NULL,
532 rep->min_percent,
533 &session->header.env,
534 true);
535 /*
536 * Usually "ret" is the last pressed key, and we only
537 * care if the key notifies us to switch data file.
538 */
539 if (ret != K_SWITCH_INPUT_DATA)
540 ret = 0;
541 break;
542 case 2:
543 ret = report__gtk_browse_hists(rep, help);
544 break;
545 default:
546 ret = perf_evlist__tty_browse_hists(evlist, rep, help);
547 break;
548 }
549
550 return ret;
551 }
552
553 static int report__collapse_hists(struct report *rep)
554 {
555 struct ui_progress prog;
556 struct perf_evsel *pos;
557 int ret = 0;
558
559 ui_progress__init(&prog, rep->nr_entries, "Merging related events...");
560
561 evlist__for_each_entry(rep->session->evlist, pos) {
562 struct hists *hists = evsel__hists(pos);
563
564 if (pos->idx == 0)
565 hists->symbol_filter_str = rep->symbol_filter_str;
566
567 hists->socket_filter = rep->socket_filter;
568
569 ret = hists__collapse_resort(hists, &prog);
570 if (ret < 0)
571 break;
572
573 /* Non-group events are considered as leader */
574 if (symbol_conf.event_group &&
575 !perf_evsel__is_group_leader(pos)) {
576 struct hists *leader_hists = evsel__hists(pos->leader);
577
578 hists__match(leader_hists, hists);
579 hists__link(leader_hists, hists);
580 }
581 }
582
583 ui_progress__finish();
584 return ret;
585 }
586
587 static void report__output_resort(struct report *rep)
588 {
589 struct ui_progress prog;
590 struct perf_evsel *pos;
591
592 ui_progress__init(&prog, rep->nr_entries, "Sorting events for output...");
593
594 evlist__for_each_entry(rep->session->evlist, pos)
595 perf_evsel__output_resort(pos, &prog);
596
597 ui_progress__finish();
598 }
599
600 static void stats_setup(struct report *rep)
601 {
602 memset(&rep->tool, 0, sizeof(rep->tool));
603 rep->tool.no_warn = true;
604 }
605
606 static int stats_print(struct report *rep)
607 {
608 struct perf_session *session = rep->session;
609
610 perf_session__fprintf_nr_events(session, stdout);
611 return 0;
612 }
613
614 static void tasks_setup(struct report *rep)
615 {
616 memset(&rep->tool, 0, sizeof(rep->tool));
617 if (rep->mmaps_mode) {
618 rep->tool.mmap = perf_event__process_mmap;
619 rep->tool.mmap2 = perf_event__process_mmap2;
620 }
621 rep->tool.comm = perf_event__process_comm;
622 rep->tool.exit = perf_event__process_exit;
623 rep->tool.fork = perf_event__process_fork;
624 rep->tool.no_warn = true;
625 }
626
627 struct task {
628 struct thread *thread;
629 struct list_head list;
630 struct list_head children;
631 };
632
633 static struct task *tasks_list(struct task *task, struct machine *machine)
634 {
635 struct thread *parent_thread, *thread = task->thread;
636 struct task *parent_task;
637
638 /* Already listed. */
639 if (!list_empty(&task->list))
640 return NULL;
641
642 /* Last one in the chain. */
643 if (thread->ppid == -1)
644 return task;
645
646 parent_thread = machine__find_thread(machine, -1, thread->ppid);
647 if (!parent_thread)
648 return ERR_PTR(-ENOENT);
649
650 parent_task = thread__priv(parent_thread);
651 list_add_tail(&task->list, &parent_task->children);
652 return tasks_list(parent_task, machine);
653 }
654
655 static size_t maps__fprintf_task(struct maps *maps, int indent, FILE *fp)
656 {
657 size_t printed = 0;
658 struct rb_node *nd;
659
660 for (nd = rb_first(&maps->entries); nd; nd = rb_next(nd)) {
661 struct map *map = rb_entry(nd, struct map, rb_node);
662
663 printed += fprintf(fp, "%*s %" PRIx64 "-%" PRIx64 " %c%c%c%c %08" PRIx64 " %" PRIu64 " %s\n",
664 indent, "", map->start, map->end,
665 map->prot & PROT_READ ? 'r' : '-',
666 map->prot & PROT_WRITE ? 'w' : '-',
667 map->prot & PROT_EXEC ? 'x' : '-',
668 map->flags & MAP_SHARED ? 's' : 'p',
669 map->pgoff,
670 map->ino, map->dso->name);
671 }
672
673 return printed;
674 }
675
676 static int map_groups__fprintf_task(struct map_groups *mg, int indent, FILE *fp)
677 {
678 int printed = 0, i;
679 for (i = 0; i < MAP__NR_TYPES; ++i)
680 printed += maps__fprintf_task(&mg->maps[i], indent, fp);
681 return printed;
682 }
683
684 static void task__print_level(struct task *task, FILE *fp, int level)
685 {
686 struct thread *thread = task->thread;
687 struct task *child;
688 int comm_indent = fprintf(fp, " %8d %8d %8d |%*s",
689 thread->pid_, thread->tid, thread->ppid,
690 level, "");
691
692 fprintf(fp, "%s\n", thread__comm_str(thread));
693
694 map_groups__fprintf_task(thread->mg, comm_indent, fp);
695
696 if (!list_empty(&task->children)) {
697 list_for_each_entry(child, &task->children, list)
698 task__print_level(child, fp, level + 1);
699 }
700 }
701
702 static int tasks_print(struct report *rep, FILE *fp)
703 {
704 struct perf_session *session = rep->session;
705 struct machine *machine = &session->machines.host;
706 struct task *tasks, *task;
707 unsigned int nr = 0, itask = 0, i;
708 struct rb_node *nd;
709 LIST_HEAD(list);
710
711 /*
712 * No locking needed while accessing machine->threads,
713 * because --tasks is single threaded command.
714 */
715
716 /* Count all the threads. */
717 for (i = 0; i < THREADS__TABLE_SIZE; i++)
718 nr += machine->threads[i].nr;
719
720 tasks = malloc(sizeof(*tasks) * nr);
721 if (!tasks)
722 return -ENOMEM;
723
724 for (i = 0; i < THREADS__TABLE_SIZE; i++) {
725 struct threads *threads = &machine->threads[i];
726
727 for (nd = rb_first(&threads->entries); nd; nd = rb_next(nd)) {
728 task = tasks + itask++;
729
730 task->thread = rb_entry(nd, struct thread, rb_node);
731 INIT_LIST_HEAD(&task->children);
732 INIT_LIST_HEAD(&task->list);
733 thread__set_priv(task->thread, task);
734 }
735 }
736
737 /*
738 * Iterate every task down to the unprocessed parent
739 * and link all in task children list. Task with no
740 * parent is added into 'list'.
741 */
742 for (itask = 0; itask < nr; itask++) {
743 task = tasks + itask;
744
745 if (!list_empty(&task->list))
746 continue;
747
748 task = tasks_list(task, machine);
749 if (IS_ERR(task)) {
750 pr_err("Error: failed to process tasks\n");
751 free(tasks);
752 return PTR_ERR(task);
753 }
754
755 if (task)
756 list_add_tail(&task->list, &list);
757 }
758
759 fprintf(fp, "# %8s %8s %8s %s\n", "pid", "tid", "ppid", "comm");
760
761 list_for_each_entry(task, &list, list)
762 task__print_level(task, fp, 0);
763
764 free(tasks);
765 return 0;
766 }
767
768 static int __cmd_report(struct report *rep)
769 {
770 int ret;
771 struct perf_session *session = rep->session;
772 struct perf_evsel *pos;
773 struct perf_data *data = session->data;
774
775 signal(SIGINT, sig_handler);
776
777 if (rep->cpu_list) {
778 ret = perf_session__cpu_bitmap(session, rep->cpu_list,
779 rep->cpu_bitmap);
780 if (ret) {
781 ui__error("failed to set cpu bitmap\n");
782 return ret;
783 }
784 session->itrace_synth_opts->cpu_bitmap = rep->cpu_bitmap;
785 }
786
787 if (rep->show_threads) {
788 ret = perf_read_values_init(&rep->show_threads_values);
789 if (ret)
790 return ret;
791 }
792
793 ret = report__setup_sample_type(rep);
794 if (ret) {
795 /* report__setup_sample_type() already showed error message */
796 return ret;
797 }
798
799 if (rep->stats_mode)
800 stats_setup(rep);
801
802 if (rep->tasks_mode)
803 tasks_setup(rep);
804
805 ret = perf_session__process_events(session);
806 if (ret) {
807 ui__error("failed to process sample\n");
808 return ret;
809 }
810
811 if (rep->stats_mode)
812 return stats_print(rep);
813
814 if (rep->tasks_mode)
815 return tasks_print(rep, stdout);
816
817 report__warn_kptr_restrict(rep);
818
819 evlist__for_each_entry(session->evlist, pos)
820 rep->nr_entries += evsel__hists(pos)->nr_entries;
821
822 if (use_browser == 0) {
823 if (verbose > 3)
824 perf_session__fprintf(session, stdout);
825
826 if (verbose > 2)
827 perf_session__fprintf_dsos(session, stdout);
828
829 if (dump_trace) {
830 perf_session__fprintf_nr_events(session, stdout);
831 perf_evlist__fprintf_nr_events(session->evlist, stdout);
832 return 0;
833 }
834 }
835
836 ret = report__collapse_hists(rep);
837 if (ret) {
838 ui__error("failed to process hist entry\n");
839 return ret;
840 }
841
842 if (session_done())
843 return 0;
844
845 /*
846 * recalculate number of entries after collapsing since it
847 * might be changed during the collapse phase.
848 */
849 rep->nr_entries = 0;
850 evlist__for_each_entry(session->evlist, pos)
851 rep->nr_entries += evsel__hists(pos)->nr_entries;
852
853 if (rep->nr_entries == 0) {
854 ui__error("The %s file has no samples!\n", data->file.path);
855 return 0;
856 }
857
858 report__output_resort(rep);
859
860 return report__browse_hists(rep);
861 }
862
863 static int
864 report_parse_callchain_opt(const struct option *opt, const char *arg, int unset)
865 {
866 struct callchain_param *callchain = opt->value;
867
868 callchain->enabled = !unset;
869 /*
870 * --no-call-graph
871 */
872 if (unset) {
873 symbol_conf.use_callchain = false;
874 callchain->mode = CHAIN_NONE;
875 return 0;
876 }
877
878 return parse_callchain_report_opt(arg);
879 }
880
881 int
882 report_parse_ignore_callees_opt(const struct option *opt __maybe_unused,
883 const char *arg, int unset __maybe_unused)
884 {
885 if (arg) {
886 int err = regcomp(&ignore_callees_regex, arg, REG_EXTENDED);
887 if (err) {
888 char buf[BUFSIZ];
889 regerror(err, &ignore_callees_regex, buf, sizeof(buf));
890 pr_err("Invalid --ignore-callees regex: %s\n%s", arg, buf);
891 return -1;
892 }
893 have_ignore_callees = 1;
894 }
895
896 return 0;
897 }
898
899 static int
900 parse_branch_mode(const struct option *opt,
901 const char *str __maybe_unused, int unset)
902 {
903 int *branch_mode = opt->value;
904
905 *branch_mode = !unset;
906 return 0;
907 }
908
909 static int
910 parse_percent_limit(const struct option *opt, const char *str,
911 int unset __maybe_unused)
912 {
913 struct report *rep = opt->value;
914 double pcnt = strtof(str, NULL);
915
916 rep->min_percent = pcnt;
917 callchain_param.min_percent = pcnt;
918 return 0;
919 }
920
921 #define CALLCHAIN_DEFAULT_OPT "graph,0.5,caller,function,percent"
922
923 const char report_callchain_help[] = "Display call graph (stack chain/backtrace):\n\n"
924 CALLCHAIN_REPORT_HELP
925 "\n\t\t\t\tDefault: " CALLCHAIN_DEFAULT_OPT;
926
927 int cmd_report(int argc, const char **argv)
928 {
929 struct perf_session *session;
930 struct itrace_synth_opts itrace_synth_opts = { .set = 0, };
931 struct stat st;
932 bool has_br_stack = false;
933 int branch_mode = -1;
934 bool branch_call_mode = false;
935 char callchain_default_opt[] = CALLCHAIN_DEFAULT_OPT;
936 const char * const report_usage[] = {
937 "perf report [<options>]",
938 NULL
939 };
940 struct report report = {
941 .tool = {
942 .sample = process_sample_event,
943 .mmap = perf_event__process_mmap,
944 .mmap2 = perf_event__process_mmap2,
945 .comm = perf_event__process_comm,
946 .namespaces = perf_event__process_namespaces,
947 .exit = perf_event__process_exit,
948 .fork = perf_event__process_fork,
949 .lost = perf_event__process_lost,
950 .read = process_read_event,
951 .attr = perf_event__process_attr,
952 .tracing_data = perf_event__process_tracing_data,
953 .build_id = perf_event__process_build_id,
954 .id_index = perf_event__process_id_index,
955 .auxtrace_info = perf_event__process_auxtrace_info,
956 .auxtrace = perf_event__process_auxtrace,
957 .feature = perf_event__process_feature,
958 .ordered_events = true,
959 .ordering_requires_timestamps = true,
960 },
961 .max_stack = PERF_MAX_STACK_DEPTH,
962 .pretty_printing_style = "normal",
963 .socket_filter = -1,
964 };
965 const struct option options[] = {
966 OPT_STRING('i', "input", &input_name, "file",
967 "input file name"),
968 OPT_INCR('v', "verbose", &verbose,
969 "be more verbose (show symbol address, etc)"),
970 OPT_BOOLEAN('q', "quiet", &quiet, "Do not show any message"),
971 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
972 "dump raw trace in ASCII"),
973 OPT_BOOLEAN(0, "stats", &report.stats_mode, "Display event stats"),
974 OPT_BOOLEAN(0, "tasks", &report.tasks_mode, "Display recorded tasks"),
975 OPT_BOOLEAN(0, "mmaps", &report.mmaps_mode, "Display recorded tasks memory maps"),
976 OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
977 "file", "vmlinux pathname"),
978 OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name,
979 "file", "kallsyms pathname"),
980 OPT_BOOLEAN('f', "force", &symbol_conf.force, "don't complain, do it"),
981 OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
982 "load module symbols - WARNING: use only with -k and LIVE kernel"),
983 OPT_BOOLEAN('n', "show-nr-samples", &symbol_conf.show_nr_samples,
984 "Show a column with the number of samples"),
985 OPT_BOOLEAN('T', "threads", &report.show_threads,
986 "Show per-thread event counters"),
987 OPT_STRING(0, "pretty", &report.pretty_printing_style, "key",
988 "pretty printing style key: normal raw"),
989 OPT_BOOLEAN(0, "tui", &report.use_tui, "Use the TUI interface"),
990 OPT_BOOLEAN(0, "gtk", &report.use_gtk, "Use the GTK2 interface"),
991 OPT_BOOLEAN(0, "stdio", &report.use_stdio,
992 "Use the stdio interface"),
993 OPT_BOOLEAN(0, "header", &report.header, "Show data header."),
994 OPT_BOOLEAN(0, "header-only", &report.header_only,
995 "Show only data header."),
996 OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
997 "sort by key(s): pid, comm, dso, symbol, parent, cpu, srcline, ..."
998 " Please refer the man page for the complete list."),
999 OPT_STRING('F', "fields", &field_order, "key[,keys...]",
1000 "output field(s): overhead, period, sample plus all of sort keys"),
1001 OPT_BOOLEAN(0, "show-cpu-utilization", &symbol_conf.show_cpu_utilization,
1002 "Show sample percentage for different cpu modes"),
1003 OPT_BOOLEAN_FLAG(0, "showcpuutilization", &symbol_conf.show_cpu_utilization,
1004 "Show sample percentage for different cpu modes", PARSE_OPT_HIDDEN),
1005 OPT_STRING('p', "parent", &parent_pattern, "regex",
1006 "regex filter to identify parent, see: '--sort parent'"),
1007 OPT_BOOLEAN('x', "exclude-other", &symbol_conf.exclude_other,
1008 "Only display entries with parent-match"),
1009 OPT_CALLBACK_DEFAULT('g', "call-graph", &callchain_param,
1010 "print_type,threshold[,print_limit],order,sort_key[,branch],value",
1011 report_callchain_help, &report_parse_callchain_opt,
1012 callchain_default_opt),
1013 OPT_BOOLEAN(0, "children", &symbol_conf.cumulate_callchain,
1014 "Accumulate callchains of children and show total overhead as well"),
1015 OPT_INTEGER(0, "max-stack", &report.max_stack,
1016 "Set the maximum stack depth when parsing the callchain, "
1017 "anything beyond the specified depth will be ignored. "
1018 "Default: kernel.perf_event_max_stack or " __stringify(PERF_MAX_STACK_DEPTH)),
1019 OPT_BOOLEAN('G', "inverted", &report.inverted_callchain,
1020 "alias for inverted call graph"),
1021 OPT_CALLBACK(0, "ignore-callees", NULL, "regex",
1022 "ignore callees of these functions in call graphs",
1023 report_parse_ignore_callees_opt),
1024 OPT_STRING('d', "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
1025 "only consider symbols in these dsos"),
1026 OPT_STRING('c', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
1027 "only consider symbols in these comms"),
1028 OPT_STRING(0, "pid", &symbol_conf.pid_list_str, "pid[,pid...]",
1029 "only consider symbols in these pids"),
1030 OPT_STRING(0, "tid", &symbol_conf.tid_list_str, "tid[,tid...]",
1031 "only consider symbols in these tids"),
1032 OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
1033 "only consider these symbols"),
1034 OPT_STRING(0, "symbol-filter", &report.symbol_filter_str, "filter",
1035 "only show symbols that (partially) match with this filter"),
1036 OPT_STRING('w', "column-widths", &symbol_conf.col_width_list_str,
1037 "width[,width...]",
1038 "don't try to adjust column width, use these fixed values"),
1039 OPT_STRING_NOEMPTY('t', "field-separator", &symbol_conf.field_sep, "separator",
1040 "separator for columns, no spaces will be added between "
1041 "columns '.' is reserved."),
1042 OPT_BOOLEAN('U', "hide-unresolved", &symbol_conf.hide_unresolved,
1043 "Only display entries resolved to a symbol"),
1044 OPT_CALLBACK(0, "symfs", NULL, "directory",
1045 "Look for files with symbols relative to this directory",
1046 symbol__config_symfs),
1047 OPT_STRING('C', "cpu", &report.cpu_list, "cpu",
1048 "list of cpus to profile"),
1049 OPT_BOOLEAN('I', "show-info", &report.show_full_info,
1050 "Display extended information about perf.data file"),
1051 OPT_BOOLEAN(0, "source", &symbol_conf.annotate_src,
1052 "Interleave source code with assembly code (default)"),
1053 OPT_BOOLEAN(0, "asm-raw", &symbol_conf.annotate_asm_raw,
1054 "Display raw encoding of assembly instructions (default)"),
1055 OPT_STRING('M', "disassembler-style", &disassembler_style, "disassembler style",
1056 "Specify disassembler style (e.g. -M intel for intel syntax)"),
1057 OPT_BOOLEAN(0, "show-total-period", &symbol_conf.show_total_period,
1058 "Show a column with the sum of periods"),
1059 OPT_BOOLEAN(0, "group", &symbol_conf.event_group,
1060 "Show event group information together"),
1061 OPT_CALLBACK_NOOPT('b', "branch-stack", &branch_mode, "",
1062 "use branch records for per branch histogram filling",
1063 parse_branch_mode),
1064 OPT_BOOLEAN(0, "branch-history", &branch_call_mode,
1065 "add last branch records to call history"),
1066 OPT_STRING(0, "objdump", &objdump_path, "path",
1067 "objdump binary to use for disassembly and annotations"),
1068 OPT_BOOLEAN(0, "demangle", &symbol_conf.demangle,
1069 "Disable symbol demangling"),
1070 OPT_BOOLEAN(0, "demangle-kernel", &symbol_conf.demangle_kernel,
1071 "Enable kernel symbol demangling"),
1072 OPT_BOOLEAN(0, "mem-mode", &report.mem_mode, "mem access profile"),
1073 OPT_CALLBACK(0, "percent-limit", &report, "percent",
1074 "Don't show entries under that percent", parse_percent_limit),
1075 OPT_CALLBACK(0, "percentage", NULL, "relative|absolute",
1076 "how to display percentage of filtered entries", parse_filter_percentage),
1077 OPT_CALLBACK_OPTARG(0, "itrace", &itrace_synth_opts, NULL, "opts",
1078 "Instruction Tracing options",
1079 itrace_parse_synth_opts),
1080 OPT_BOOLEAN(0, "full-source-path", &srcline_full_filename,
1081 "Show full source file name path for source lines"),
1082 OPT_BOOLEAN(0, "show-ref-call-graph", &symbol_conf.show_ref_callgraph,
1083 "Show callgraph from reference event"),
1084 OPT_INTEGER(0, "socket-filter", &report.socket_filter,
1085 "only show processor socket that match with this filter"),
1086 OPT_BOOLEAN(0, "raw-trace", &symbol_conf.raw_trace,
1087 "Show raw trace event output (do not use print fmt or plugins)"),
1088 OPT_BOOLEAN(0, "hierarchy", &symbol_conf.report_hierarchy,
1089 "Show entries in a hierarchy"),
1090 OPT_CALLBACK_DEFAULT(0, "stdio-color", NULL, "mode",
1091 "'always' (default), 'never' or 'auto' only applicable to --stdio mode",
1092 stdio__config_color, "always"),
1093 OPT_STRING(0, "time", &report.time_str, "str",
1094 "Time span of interest (start,stop)"),
1095 OPT_BOOLEAN(0, "inline", &symbol_conf.inline_name,
1096 "Show inline function"),
1097 OPT_END()
1098 };
1099 struct perf_data data = {
1100 .mode = PERF_DATA_MODE_READ,
1101 };
1102 int ret = hists__init();
1103
1104 if (ret < 0)
1105 return ret;
1106
1107 ret = perf_config(report__config, &report);
1108 if (ret)
1109 return ret;
1110
1111 argc = parse_options(argc, argv, options, report_usage, 0);
1112 if (argc) {
1113 /*
1114 * Special case: if there's an argument left then assume that
1115 * it's a symbol filter:
1116 */
1117 if (argc > 1)
1118 usage_with_options(report_usage, options);
1119
1120 report.symbol_filter_str = argv[0];
1121 }
1122
1123 if (report.mmaps_mode)
1124 report.tasks_mode = true;
1125
1126 if (quiet)
1127 perf_quiet_option();
1128
1129 if (symbol_conf.vmlinux_name &&
1130 access(symbol_conf.vmlinux_name, R_OK)) {
1131 pr_err("Invalid file: %s\n", symbol_conf.vmlinux_name);
1132 return -EINVAL;
1133 }
1134 if (symbol_conf.kallsyms_name &&
1135 access(symbol_conf.kallsyms_name, R_OK)) {
1136 pr_err("Invalid file: %s\n", symbol_conf.kallsyms_name);
1137 return -EINVAL;
1138 }
1139
1140 if (report.inverted_callchain)
1141 callchain_param.order = ORDER_CALLER;
1142 if (symbol_conf.cumulate_callchain && !callchain_param.order_set)
1143 callchain_param.order = ORDER_CALLER;
1144
1145 if (itrace_synth_opts.callchain &&
1146 (int)itrace_synth_opts.callchain_sz > report.max_stack)
1147 report.max_stack = itrace_synth_opts.callchain_sz;
1148
1149 if (!input_name || !strlen(input_name)) {
1150 if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
1151 input_name = "-";
1152 else
1153 input_name = "perf.data";
1154 }
1155
1156 data.file.path = input_name;
1157 data.force = symbol_conf.force;
1158
1159 repeat:
1160 session = perf_session__new(&data, false, &report.tool);
1161 if (session == NULL)
1162 return -1;
1163
1164 if (report.queue_size) {
1165 ordered_events__set_alloc_size(&session->ordered_events,
1166 report.queue_size);
1167 }
1168
1169 session->itrace_synth_opts = &itrace_synth_opts;
1170
1171 report.session = session;
1172
1173 has_br_stack = perf_header__has_feat(&session->header,
1174 HEADER_BRANCH_STACK);
1175
1176 if (itrace_synth_opts.last_branch)
1177 has_br_stack = true;
1178
1179 if (has_br_stack && branch_call_mode)
1180 symbol_conf.show_branchflag_count = true;
1181
1182 memset(&report.brtype_stat, 0, sizeof(struct branch_type_stat));
1183
1184 /*
1185 * Branch mode is a tristate:
1186 * -1 means default, so decide based on the file having branch data.
1187 * 0/1 means the user chose a mode.
1188 */
1189 if (((branch_mode == -1 && has_br_stack) || branch_mode == 1) &&
1190 !branch_call_mode) {
1191 sort__mode = SORT_MODE__BRANCH;
1192 symbol_conf.cumulate_callchain = false;
1193 }
1194 if (branch_call_mode) {
1195 callchain_param.key = CCKEY_ADDRESS;
1196 callchain_param.branch_callstack = 1;
1197 symbol_conf.use_callchain = true;
1198 callchain_register_param(&callchain_param);
1199 if (sort_order == NULL)
1200 sort_order = "srcline,symbol,dso";
1201 }
1202
1203 if (report.mem_mode) {
1204 if (sort__mode == SORT_MODE__BRANCH) {
1205 pr_err("branch and mem mode incompatible\n");
1206 goto error;
1207 }
1208 sort__mode = SORT_MODE__MEMORY;
1209 symbol_conf.cumulate_callchain = false;
1210 }
1211
1212 if (symbol_conf.report_hierarchy) {
1213 /* disable incompatible options */
1214 symbol_conf.cumulate_callchain = false;
1215
1216 if (field_order) {
1217 pr_err("Error: --hierarchy and --fields options cannot be used together\n");
1218 parse_options_usage(report_usage, options, "F", 1);
1219 parse_options_usage(NULL, options, "hierarchy", 0);
1220 goto error;
1221 }
1222
1223 perf_hpp_list.need_collapse = true;
1224 }
1225
1226 if (report.use_stdio)
1227 use_browser = 0;
1228 else if (report.use_tui)
1229 use_browser = 1;
1230 else if (report.use_gtk)
1231 use_browser = 2;
1232
1233 /* Force tty output for header output and per-thread stat. */
1234 if (report.header || report.header_only || report.show_threads)
1235 use_browser = 0;
1236 if (report.header || report.header_only)
1237 report.tool.show_feat_hdr = SHOW_FEAT_HEADER;
1238 if (report.show_full_info)
1239 report.tool.show_feat_hdr = SHOW_FEAT_HEADER_FULL_INFO;
1240 if (report.stats_mode || report.tasks_mode)
1241 use_browser = 0;
1242 if (report.stats_mode && report.tasks_mode) {
1243 pr_err("Error: --tasks and --mmaps can't be used together with --stats\n");
1244 goto error;
1245 }
1246
1247 if (strcmp(input_name, "-") != 0)
1248 setup_browser(true);
1249 else
1250 use_browser = 0;
1251
1252 if (setup_sorting(session->evlist) < 0) {
1253 if (sort_order)
1254 parse_options_usage(report_usage, options, "s", 1);
1255 if (field_order)
1256 parse_options_usage(sort_order ? NULL : report_usage,
1257 options, "F", 1);
1258 goto error;
1259 }
1260
1261 if ((report.header || report.header_only) && !quiet) {
1262 perf_session__fprintf_info(session, stdout,
1263 report.show_full_info);
1264 if (report.header_only) {
1265 ret = 0;
1266 goto error;
1267 }
1268 } else if (use_browser == 0 && !quiet &&
1269 !report.stats_mode && !report.tasks_mode) {
1270 fputs("# To display the perf.data header info, please use --header/--header-only options.\n#\n",
1271 stdout);
1272 }
1273
1274 /*
1275 * Only in the TUI browser we are doing integrated annotation,
1276 * so don't allocate extra space that won't be used in the stdio
1277 * implementation.
1278 */
1279 if (ui__has_annotation()) {
1280 ret = symbol__annotation_init();
1281 if (ret < 0)
1282 goto error;
1283 /*
1284 * For searching by name on the "Browse map details".
1285 * providing it only in verbose mode not to bloat too
1286 * much struct symbol.
1287 */
1288 if (verbose > 0) {
1289 /*
1290 * XXX: Need to provide a less kludgy way to ask for
1291 * more space per symbol, the u32 is for the index on
1292 * the ui browser.
1293 * See symbol__browser_index.
1294 */
1295 symbol_conf.priv_size += sizeof(u32);
1296 symbol_conf.sort_by_name = true;
1297 }
1298 }
1299
1300 if (symbol__init(&session->header.env) < 0)
1301 goto error;
1302
1303 report.ptime_range = perf_time__range_alloc(report.time_str,
1304 &report.range_size);
1305 if (!report.ptime_range) {
1306 ret = -ENOMEM;
1307 goto error;
1308 }
1309
1310 if (perf_time__parse_str(report.ptime_range, report.time_str) != 0) {
1311 if (session->evlist->first_sample_time == 0 &&
1312 session->evlist->last_sample_time == 0) {
1313 pr_err("HINT: no first/last sample time found in perf data.\n"
1314 "Please use latest perf binary to execute 'perf record'\n"
1315 "(if '--buildid-all' is enabled, please set '--timestamp-boundary').\n");
1316 ret = -EINVAL;
1317 goto error;
1318 }
1319
1320 report.range_num = perf_time__percent_parse_str(
1321 report.ptime_range, report.range_size,
1322 report.time_str,
1323 session->evlist->first_sample_time,
1324 session->evlist->last_sample_time);
1325
1326 if (report.range_num < 0) {
1327 pr_err("Invalid time string\n");
1328 ret = -EINVAL;
1329 goto error;
1330 }
1331 } else {
1332 report.range_num = 1;
1333 }
1334
1335 sort__setup_elide(stdout);
1336
1337 ret = __cmd_report(&report);
1338 if (ret == K_SWITCH_INPUT_DATA) {
1339 perf_session__delete(session);
1340 goto repeat;
1341 } else
1342 ret = 0;
1343
1344 error:
1345 zfree(&report.ptime_range);
1346
1347 perf_session__delete(session);
1348 return ret;
1349 }
CRIS linux kernel tree