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xtensa: fix high memory/reserved memory collision
[cris-mirror.git] / tools / perf / builtin-report.c
blob42a52dcc41cd4f31e60910eed0adc0e0eda313a0
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 /*
535 * Usually "ret" is the last pressed key, and we only
536 * care if the key notifies us to switch data file.
537 */
538 if (ret != K_SWITCH_INPUT_DATA)
539 ret = 0;
540 break;
541 case 2:
542 ret = report__gtk_browse_hists(rep, help);
543 break;
544 default:
545 ret = perf_evlist__tty_browse_hists(evlist, rep, help);
546 break;
547 }
548
549 return ret;
550 }
551
552 static int report__collapse_hists(struct report *rep)
553 {
554 struct ui_progress prog;
555 struct perf_evsel *pos;
556 int ret = 0;
557
558 ui_progress__init(&prog, rep->nr_entries, "Merging related events...");
559
560 evlist__for_each_entry(rep->session->evlist, pos) {
561 struct hists *hists = evsel__hists(pos);
562
563 if (pos->idx == 0)
564 hists->symbol_filter_str = rep->symbol_filter_str;
565
566 hists->socket_filter = rep->socket_filter;
567
568 ret = hists__collapse_resort(hists, &prog);
569 if (ret < 0)
570 break;
571
572 /* Non-group events are considered as leader */
573 if (symbol_conf.event_group &&
574 !perf_evsel__is_group_leader(pos)) {
575 struct hists *leader_hists = evsel__hists(pos->leader);
576
577 hists__match(leader_hists, hists);
578 hists__link(leader_hists, hists);
579 }
580 }
581
582 ui_progress__finish();
583 return ret;
584 }
585
586 static void report__output_resort(struct report *rep)
587 {
588 struct ui_progress prog;
589 struct perf_evsel *pos;
590
591 ui_progress__init(&prog, rep->nr_entries, "Sorting events for output...");
592
593 evlist__for_each_entry(rep->session->evlist, pos)
594 perf_evsel__output_resort(pos, &prog);
595
596 ui_progress__finish();
597 }
598
599 static void stats_setup(struct report *rep)
600 {
601 memset(&rep->tool, 0, sizeof(rep->tool));
602 rep->tool.no_warn = true;
603 }
604
605 static int stats_print(struct report *rep)
606 {
607 struct perf_session *session = rep->session;
608
609 perf_session__fprintf_nr_events(session, stdout);
610 return 0;
611 }
612
613 static void tasks_setup(struct report *rep)
614 {
615 memset(&rep->tool, 0, sizeof(rep->tool));
616 if (rep->mmaps_mode) {
617 rep->tool.mmap = perf_event__process_mmap;
618 rep->tool.mmap2 = perf_event__process_mmap2;
619 }
620 rep->tool.comm = perf_event__process_comm;
621 rep->tool.exit = perf_event__process_exit;
622 rep->tool.fork = perf_event__process_fork;
623 rep->tool.no_warn = true;
624 }
625
626 struct task {
627 struct thread *thread;
628 struct list_head list;
629 struct list_head children;
630 };
631
632 static struct task *tasks_list(struct task *task, struct machine *machine)
633 {
634 struct thread *parent_thread, *thread = task->thread;
635 struct task *parent_task;
636
637 /* Already listed. */
638 if (!list_empty(&task->list))
639 return NULL;
640
641 /* Last one in the chain. */
642 if (thread->ppid == -1)
643 return task;
644
645 parent_thread = machine__find_thread(machine, -1, thread->ppid);
646 if (!parent_thread)
647 return ERR_PTR(-ENOENT);
648
649 parent_task = thread__priv(parent_thread);
650 list_add_tail(&task->list, &parent_task->children);
651 return tasks_list(parent_task, machine);
652 }
653
654 static size_t maps__fprintf_task(struct maps *maps, int indent, FILE *fp)
655 {
656 size_t printed = 0;
657 struct rb_node *nd;
658
659 for (nd = rb_first(&maps->entries); nd; nd = rb_next(nd)) {
660 struct map *map = rb_entry(nd, struct map, rb_node);
661
662 printed += fprintf(fp, "%*s %" PRIx64 "-%" PRIx64 " %c%c%c%c %08" PRIx64 " %" PRIu64 " %s\n",
663 indent, "", map->start, map->end,
664 map->prot & PROT_READ ? 'r' : '-',
665 map->prot & PROT_WRITE ? 'w' : '-',
666 map->prot & PROT_EXEC ? 'x' : '-',
667 map->flags & MAP_SHARED ? 's' : 'p',
668 map->pgoff,
669 map->ino, map->dso->name);
670 }
671
672 return printed;
673 }
674
675 static int map_groups__fprintf_task(struct map_groups *mg, int indent, FILE *fp)
676 {
677 int printed = 0, i;
678 for (i = 0; i < MAP__NR_TYPES; ++i)
679 printed += maps__fprintf_task(&mg->maps[i], indent, fp);
680 return printed;
681 }
682
683 static void task__print_level(struct task *task, FILE *fp, int level)
684 {
685 struct thread *thread = task->thread;
686 struct task *child;
687 int comm_indent = fprintf(fp, " %8d %8d %8d |%*s",
688 thread->pid_, thread->tid, thread->ppid,
689 level, "");
690
691 fprintf(fp, "%s\n", thread__comm_str(thread));
692
693 map_groups__fprintf_task(thread->mg, comm_indent, fp);
694
695 if (!list_empty(&task->children)) {
696 list_for_each_entry(child, &task->children, list)
697 task__print_level(child, fp, level + 1);
698 }
699 }
700
701 static int tasks_print(struct report *rep, FILE *fp)
702 {
703 struct perf_session *session = rep->session;
704 struct machine *machine = &session->machines.host;
705 struct task *tasks, *task;
706 unsigned int nr = 0, itask = 0, i;
707 struct rb_node *nd;
708 LIST_HEAD(list);
709
710 /*
711 * No locking needed while accessing machine->threads,
712 * because --tasks is single threaded command.
713 */
714
715 /* Count all the threads. */
716 for (i = 0; i < THREADS__TABLE_SIZE; i++)
717 nr += machine->threads[i].nr;
718
719 tasks = malloc(sizeof(*tasks) * nr);
720 if (!tasks)
721 return -ENOMEM;
722
723 for (i = 0; i < THREADS__TABLE_SIZE; i++) {
724 struct threads *threads = &machine->threads[i];
725
726 for (nd = rb_first(&threads->entries); nd; nd = rb_next(nd)) {
727 task = tasks + itask++;
728
729 task->thread = rb_entry(nd, struct thread, rb_node);
730 INIT_LIST_HEAD(&task->children);
731 INIT_LIST_HEAD(&task->list);
732 thread__set_priv(task->thread, task);
733 }
734 }
735
736 /*
737 * Iterate every task down to the unprocessed parent
738 * and link all in task children list. Task with no
739 * parent is added into 'list'.
740 */
741 for (itask = 0; itask < nr; itask++) {
742 task = tasks + itask;
743
744 if (!list_empty(&task->list))
745 continue;
746
747 task = tasks_list(task, machine);
748 if (IS_ERR(task)) {
749 pr_err("Error: failed to process tasks\n");
750 free(tasks);
751 return PTR_ERR(task);
752 }
753
754 if (task)
755 list_add_tail(&task->list, &list);
756 }
757
758 fprintf(fp, "# %8s %8s %8s %s\n", "pid", "tid", "ppid", "comm");
759
760 list_for_each_entry(task, &list, list)
761 task__print_level(task, fp, 0);
762
763 free(tasks);
764 return 0;
765 }
766
767 static int __cmd_report(struct report *rep)
768 {
769 int ret;
770 struct perf_session *session = rep->session;
771 struct perf_evsel *pos;
772 struct perf_data *data = session->data;
773
774 signal(SIGINT, sig_handler);
775
776 if (rep->cpu_list) {
777 ret = perf_session__cpu_bitmap(session, rep->cpu_list,
778 rep->cpu_bitmap);
779 if (ret) {
780 ui__error("failed to set cpu bitmap\n");
781 return ret;
782 }
783 session->itrace_synth_opts->cpu_bitmap = rep->cpu_bitmap;
784 }
785
786 if (rep->show_threads) {
787 ret = perf_read_values_init(&rep->show_threads_values);
788 if (ret)
789 return ret;
790 }
791
792 ret = report__setup_sample_type(rep);
793 if (ret) {
794 /* report__setup_sample_type() already showed error message */
795 return ret;
796 }
797
798 if (rep->stats_mode)
799 stats_setup(rep);
800
801 if (rep->tasks_mode)
802 tasks_setup(rep);
803
804 ret = perf_session__process_events(session);
805 if (ret) {
806 ui__error("failed to process sample\n");
807 return ret;
808 }
809
810 if (rep->stats_mode)
811 return stats_print(rep);
812
813 if (rep->tasks_mode)
814 return tasks_print(rep, stdout);
815
816 report__warn_kptr_restrict(rep);
817
818 evlist__for_each_entry(session->evlist, pos)
819 rep->nr_entries += evsel__hists(pos)->nr_entries;
820
821 if (use_browser == 0) {
822 if (verbose > 3)
823 perf_session__fprintf(session, stdout);
824
825 if (verbose > 2)
826 perf_session__fprintf_dsos(session, stdout);
827
828 if (dump_trace) {
829 perf_session__fprintf_nr_events(session, stdout);
830 perf_evlist__fprintf_nr_events(session->evlist, stdout);
831 return 0;
832 }
833 }
834
835 ret = report__collapse_hists(rep);
836 if (ret) {
837 ui__error("failed to process hist entry\n");
838 return ret;
839 }
840
841 if (session_done())
842 return 0;
843
844 /*
845 * recalculate number of entries after collapsing since it
846 * might be changed during the collapse phase.
847 */
848 rep->nr_entries = 0;
849 evlist__for_each_entry(session->evlist, pos)
850 rep->nr_entries += evsel__hists(pos)->nr_entries;
851
852 if (rep->nr_entries == 0) {
853 ui__error("The %s file has no samples!\n", data->file.path);
854 return 0;
855 }
856
857 report__output_resort(rep);
858
859 return report__browse_hists(rep);
860 }
861
862 static int
863 report_parse_callchain_opt(const struct option *opt, const char *arg, int unset)
864 {
865 struct callchain_param *callchain = opt->value;
866
867 callchain->enabled = !unset;
868 /*
869 * --no-call-graph
870 */
871 if (unset) {
872 symbol_conf.use_callchain = false;
873 callchain->mode = CHAIN_NONE;
874 return 0;
875 }
876
877 return parse_callchain_report_opt(arg);
878 }
879
880 int
881 report_parse_ignore_callees_opt(const struct option *opt __maybe_unused,
882 const char *arg, int unset __maybe_unused)
883 {
884 if (arg) {
885 int err = regcomp(&ignore_callees_regex, arg, REG_EXTENDED);
886 if (err) {
887 char buf[BUFSIZ];
888 regerror(err, &ignore_callees_regex, buf, sizeof(buf));
889 pr_err("Invalid --ignore-callees regex: %s\n%s", arg, buf);
890 return -1;
891 }
892 have_ignore_callees = 1;
893 }
894
895 return 0;
896 }
897
898 static int
899 parse_branch_mode(const struct option *opt,
900 const char *str __maybe_unused, int unset)
901 {
902 int *branch_mode = opt->value;
903
904 *branch_mode = !unset;
905 return 0;
906 }
907
908 static int
909 parse_percent_limit(const struct option *opt, const char *str,
910 int unset __maybe_unused)
911 {
912 struct report *rep = opt->value;
913 double pcnt = strtof(str, NULL);
914
915 rep->min_percent = pcnt;
916 callchain_param.min_percent = pcnt;
917 return 0;
918 }
919
920 #define CALLCHAIN_DEFAULT_OPT "graph,0.5,caller,function,percent"
921
922 const char report_callchain_help[] = "Display call graph (stack chain/backtrace):\n\n"
923 CALLCHAIN_REPORT_HELP
924 "\n\t\t\t\tDefault: " CALLCHAIN_DEFAULT_OPT;
925
926 int cmd_report(int argc, const char **argv)
927 {
928 struct perf_session *session;
929 struct itrace_synth_opts itrace_synth_opts = { .set = 0, };
930 struct stat st;
931 bool has_br_stack = false;
932 int branch_mode = -1;
933 bool branch_call_mode = false;
934 char callchain_default_opt[] = CALLCHAIN_DEFAULT_OPT;
935 const char * const report_usage[] = {
936 "perf report [<options>]",
937 NULL
938 };
939 struct report report = {
940 .tool = {
941 .sample = process_sample_event,
942 .mmap = perf_event__process_mmap,
943 .mmap2 = perf_event__process_mmap2,
944 .comm = perf_event__process_comm,
945 .namespaces = perf_event__process_namespaces,
946 .exit = perf_event__process_exit,
947 .fork = perf_event__process_fork,
948 .lost = perf_event__process_lost,
949 .read = process_read_event,
950 .attr = perf_event__process_attr,
951 .tracing_data = perf_event__process_tracing_data,
952 .build_id = perf_event__process_build_id,
953 .id_index = perf_event__process_id_index,
954 .auxtrace_info = perf_event__process_auxtrace_info,
955 .auxtrace = perf_event__process_auxtrace,
956 .feature = perf_event__process_feature,
957 .ordered_events = true,
958 .ordering_requires_timestamps = true,
959 },
960 .max_stack = PERF_MAX_STACK_DEPTH,
961 .pretty_printing_style = "normal",
962 .socket_filter = -1,
963 };
964 const struct option options[] = {
965 OPT_STRING('i', "input", &input_name, "file",
966 "input file name"),
967 OPT_INCR('v', "verbose", &verbose,
968 "be more verbose (show symbol address, etc)"),
969 OPT_BOOLEAN('q', "quiet", &quiet, "Do not show any message"),
970 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
971 "dump raw trace in ASCII"),
972 OPT_BOOLEAN(0, "stats", &report.stats_mode, "Display event stats"),
973 OPT_BOOLEAN(0, "tasks", &report.tasks_mode, "Display recorded tasks"),
974 OPT_BOOLEAN(0, "mmaps", &report.mmaps_mode, "Display recorded tasks memory maps"),
975 OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
976 "file", "vmlinux pathname"),
977 OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name,
978 "file", "kallsyms pathname"),
979 OPT_BOOLEAN('f', "force", &symbol_conf.force, "don't complain, do it"),
980 OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
981 "load module symbols - WARNING: use only with -k and LIVE kernel"),
982 OPT_BOOLEAN('n', "show-nr-samples", &symbol_conf.show_nr_samples,
983 "Show a column with the number of samples"),
984 OPT_BOOLEAN('T', "threads", &report.show_threads,
985 "Show per-thread event counters"),
986 OPT_STRING(0, "pretty", &report.pretty_printing_style, "key",
987 "pretty printing style key: normal raw"),
988 OPT_BOOLEAN(0, "tui", &report.use_tui, "Use the TUI interface"),
989 OPT_BOOLEAN(0, "gtk", &report.use_gtk, "Use the GTK2 interface"),
990 OPT_BOOLEAN(0, "stdio", &report.use_stdio,
991 "Use the stdio interface"),
992 OPT_BOOLEAN(0, "header", &report.header, "Show data header."),
993 OPT_BOOLEAN(0, "header-only", &report.header_only,
994 "Show only data header."),
995 OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
996 "sort by key(s): pid, comm, dso, symbol, parent, cpu, srcline, ..."
997 " Please refer the man page for the complete list."),
998 OPT_STRING('F', "fields", &field_order, "key[,keys...]",
999 "output field(s): overhead, period, sample plus all of sort keys"),
1000 OPT_BOOLEAN(0, "show-cpu-utilization", &symbol_conf.show_cpu_utilization,
1001 "Show sample percentage for different cpu modes"),
1002 OPT_BOOLEAN_FLAG(0, "showcpuutilization", &symbol_conf.show_cpu_utilization,
1003 "Show sample percentage for different cpu modes", PARSE_OPT_HIDDEN),
1004 OPT_STRING('p', "parent", &parent_pattern, "regex",
1005 "regex filter to identify parent, see: '--sort parent'"),
1006 OPT_BOOLEAN('x', "exclude-other", &symbol_conf.exclude_other,
1007 "Only display entries with parent-match"),
1008 OPT_CALLBACK_DEFAULT('g', "call-graph", &callchain_param,
1009 "print_type,threshold[,print_limit],order,sort_key[,branch],value",
1010 report_callchain_help, &report_parse_callchain_opt,
1011 callchain_default_opt),
1012 OPT_BOOLEAN(0, "children", &symbol_conf.cumulate_callchain,
1013 "Accumulate callchains of children and show total overhead as well"),
1014 OPT_INTEGER(0, "max-stack", &report.max_stack,
1015 "Set the maximum stack depth when parsing the callchain, "
1016 "anything beyond the specified depth will be ignored. "
1017 "Default: kernel.perf_event_max_stack or " __stringify(PERF_MAX_STACK_DEPTH)),
1018 OPT_BOOLEAN('G', "inverted", &report.inverted_callchain,
1019 "alias for inverted call graph"),
1020 OPT_CALLBACK(0, "ignore-callees", NULL, "regex",
1021 "ignore callees of these functions in call graphs",
1022 report_parse_ignore_callees_opt),
1023 OPT_STRING('d', "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
1024 "only consider symbols in these dsos"),
1025 OPT_STRING('c', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
1026 "only consider symbols in these comms"),
1027 OPT_STRING(0, "pid", &symbol_conf.pid_list_str, "pid[,pid...]",
1028 "only consider symbols in these pids"),
1029 OPT_STRING(0, "tid", &symbol_conf.tid_list_str, "tid[,tid...]",
1030 "only consider symbols in these tids"),
1031 OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
1032 "only consider these symbols"),
1033 OPT_STRING(0, "symbol-filter", &report.symbol_filter_str, "filter",
1034 "only show symbols that (partially) match with this filter"),
1035 OPT_STRING('w', "column-widths", &symbol_conf.col_width_list_str,
1036 "width[,width...]",
1037 "don't try to adjust column width, use these fixed values"),
1038 OPT_STRING_NOEMPTY('t', "field-separator", &symbol_conf.field_sep, "separator",
1039 "separator for columns, no spaces will be added between "
1040 "columns '.' is reserved."),
1041 OPT_BOOLEAN('U', "hide-unresolved", &symbol_conf.hide_unresolved,
1042 "Only display entries resolved to a symbol"),
1043 OPT_CALLBACK(0, "symfs", NULL, "directory",
1044 "Look for files with symbols relative to this directory",
1045 symbol__config_symfs),
1046 OPT_STRING('C', "cpu", &report.cpu_list, "cpu",
1047 "list of cpus to profile"),
1048 OPT_BOOLEAN('I', "show-info", &report.show_full_info,
1049 "Display extended information about perf.data file"),
1050 OPT_BOOLEAN(0, "source", &symbol_conf.annotate_src,
1051 "Interleave source code with assembly code (default)"),
1052 OPT_BOOLEAN(0, "asm-raw", &symbol_conf.annotate_asm_raw,
1053 "Display raw encoding of assembly instructions (default)"),
1054 OPT_STRING('M', "disassembler-style", &disassembler_style, "disassembler style",
1055 "Specify disassembler style (e.g. -M intel for intel syntax)"),
1056 OPT_BOOLEAN(0, "show-total-period", &symbol_conf.show_total_period,
1057 "Show a column with the sum of periods"),
1058 OPT_BOOLEAN(0, "group", &symbol_conf.event_group,
1059 "Show event group information together"),
1060 OPT_CALLBACK_NOOPT('b', "branch-stack", &branch_mode, "",
1061 "use branch records for per branch histogram filling",
1062 parse_branch_mode),
1063 OPT_BOOLEAN(0, "branch-history", &branch_call_mode,
1064 "add last branch records to call history"),
1065 OPT_STRING(0, "objdump", &objdump_path, "path",
1066 "objdump binary to use for disassembly and annotations"),
1067 OPT_BOOLEAN(0, "demangle", &symbol_conf.demangle,
1068 "Disable symbol demangling"),
1069 OPT_BOOLEAN(0, "demangle-kernel", &symbol_conf.demangle_kernel,
1070 "Enable kernel symbol demangling"),
1071 OPT_BOOLEAN(0, "mem-mode", &report.mem_mode, "mem access profile"),
1072 OPT_CALLBACK(0, "percent-limit", &report, "percent",
1073 "Don't show entries under that percent", parse_percent_limit),
1074 OPT_CALLBACK(0, "percentage", NULL, "relative|absolute",
1075 "how to display percentage of filtered entries", parse_filter_percentage),
1076 OPT_CALLBACK_OPTARG(0, "itrace", &itrace_synth_opts, NULL, "opts",
1077 "Instruction Tracing options",
1078 itrace_parse_synth_opts),
1079 OPT_BOOLEAN(0, "full-source-path", &srcline_full_filename,
1080 "Show full source file name path for source lines"),
1081 OPT_BOOLEAN(0, "show-ref-call-graph", &symbol_conf.show_ref_callgraph,
1082 "Show callgraph from reference event"),
1083 OPT_INTEGER(0, "socket-filter", &report.socket_filter,
1084 "only show processor socket that match with this filter"),
1085 OPT_BOOLEAN(0, "raw-trace", &symbol_conf.raw_trace,
1086 "Show raw trace event output (do not use print fmt or plugins)"),
1087 OPT_BOOLEAN(0, "hierarchy", &symbol_conf.report_hierarchy,
1088 "Show entries in a hierarchy"),
1089 OPT_CALLBACK_DEFAULT(0, "stdio-color", NULL, "mode",
1090 "'always' (default), 'never' or 'auto' only applicable to --stdio mode",
1091 stdio__config_color, "always"),
1092 OPT_STRING(0, "time", &report.time_str, "str",
1093 "Time span of interest (start,stop)"),
1094 OPT_BOOLEAN(0, "inline", &symbol_conf.inline_name,
1095 "Show inline function"),
1096 OPT_END()
1097 };
1098 struct perf_data data = {
1099 .mode = PERF_DATA_MODE_READ,
1100 };
1101 int ret = hists__init();
1102
1103 if (ret < 0)
1104 return ret;
1105
1106 ret = perf_config(report__config, &report);
1107 if (ret)
1108 return ret;
1109
1110 argc = parse_options(argc, argv, options, report_usage, 0);
1111 if (argc) {
1112 /*
1113 * Special case: if there's an argument left then assume that
1114 * it's a symbol filter:
1115 */
1116 if (argc > 1)
1117 usage_with_options(report_usage, options);
1118
1119 report.symbol_filter_str = argv[0];
1120 }
1121
1122 if (report.mmaps_mode)
1123 report.tasks_mode = true;
1124
1125 if (quiet)
1126 perf_quiet_option();
1127
1128 if (symbol_conf.vmlinux_name &&
1129 access(symbol_conf.vmlinux_name, R_OK)) {
1130 pr_err("Invalid file: %s\n", symbol_conf.vmlinux_name);
1131 return -EINVAL;
1132 }
1133 if (symbol_conf.kallsyms_name &&
1134 access(symbol_conf.kallsyms_name, R_OK)) {
1135 pr_err("Invalid file: %s\n", symbol_conf.kallsyms_name);
1136 return -EINVAL;
1137 }
1138
1139 if (report.inverted_callchain)
1140 callchain_param.order = ORDER_CALLER;
1141 if (symbol_conf.cumulate_callchain && !callchain_param.order_set)
1142 callchain_param.order = ORDER_CALLER;
1143
1144 if (itrace_synth_opts.callchain &&
1145 (int)itrace_synth_opts.callchain_sz > report.max_stack)
1146 report.max_stack = itrace_synth_opts.callchain_sz;
1147
1148 if (!input_name || !strlen(input_name)) {
1149 if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
1150 input_name = "-";
1151 else
1152 input_name = "perf.data";
1153 }
1154
1155 data.file.path = input_name;
1156 data.force = symbol_conf.force;
1157
1158 repeat:
1159 session = perf_session__new(&data, false, &report.tool);
1160 if (session == NULL)
1161 return -1;
1162
1163 if (report.queue_size) {
1164 ordered_events__set_alloc_size(&session->ordered_events,
1165 report.queue_size);
1166 }
1167
1168 session->itrace_synth_opts = &itrace_synth_opts;
1169
1170 report.session = session;
1171
1172 has_br_stack = perf_header__has_feat(&session->header,
1173 HEADER_BRANCH_STACK);
1174
1175 if (itrace_synth_opts.last_branch)
1176 has_br_stack = true;
1177
1178 if (has_br_stack && branch_call_mode)
1179 symbol_conf.show_branchflag_count = true;
1180
1181 memset(&report.brtype_stat, 0, sizeof(struct branch_type_stat));
1182
1183 /*
1184 * Branch mode is a tristate:
1185 * -1 means default, so decide based on the file having branch data.
1186 * 0/1 means the user chose a mode.
1187 */
1188 if (((branch_mode == -1 && has_br_stack) || branch_mode == 1) &&
1189 !branch_call_mode) {
1190 sort__mode = SORT_MODE__BRANCH;
1191 symbol_conf.cumulate_callchain = false;
1192 }
1193 if (branch_call_mode) {
1194 callchain_param.key = CCKEY_ADDRESS;
1195 callchain_param.branch_callstack = 1;
1196 symbol_conf.use_callchain = true;
1197 callchain_register_param(&callchain_param);
1198 if (sort_order == NULL)
1199 sort_order = "srcline,symbol,dso";
1200 }
1201
1202 if (report.mem_mode) {
1203 if (sort__mode == SORT_MODE__BRANCH) {
1204 pr_err("branch and mem mode incompatible\n");
1205 goto error;
1206 }
1207 sort__mode = SORT_MODE__MEMORY;
1208 symbol_conf.cumulate_callchain = false;
1209 }
1210
1211 if (symbol_conf.report_hierarchy) {
1212 /* disable incompatible options */
1213 symbol_conf.cumulate_callchain = false;
1214
1215 if (field_order) {
1216 pr_err("Error: --hierarchy and --fields options cannot be used together\n");
1217 parse_options_usage(report_usage, options, "F", 1);
1218 parse_options_usage(NULL, options, "hierarchy", 0);
1219 goto error;
1220 }
1221
1222 perf_hpp_list.need_collapse = true;
1223 }
1224
1225 if (report.use_stdio)
1226 use_browser = 0;
1227 else if (report.use_tui)
1228 use_browser = 1;
1229 else if (report.use_gtk)
1230 use_browser = 2;
1231
1232 /* Force tty output for header output and per-thread stat. */
1233 if (report.header || report.header_only || report.show_threads)
1234 use_browser = 0;
1235 if (report.header || report.header_only)
1236 report.tool.show_feat_hdr = SHOW_FEAT_HEADER;
1237 if (report.show_full_info)
1238 report.tool.show_feat_hdr = SHOW_FEAT_HEADER_FULL_INFO;
1239 if (report.stats_mode || report.tasks_mode)
1240 use_browser = 0;
1241 if (report.stats_mode && report.tasks_mode) {
1242 pr_err("Error: --tasks and --mmaps can't be used together with --stats\n");
1243 goto error;
1244 }
1245
1246 if (strcmp(input_name, "-") != 0)
1247 setup_browser(true);
1248 else
1249 use_browser = 0;
1250
1251 if (setup_sorting(session->evlist) < 0) {
1252 if (sort_order)
1253 parse_options_usage(report_usage, options, "s", 1);
1254 if (field_order)
1255 parse_options_usage(sort_order ? NULL : report_usage,
1256 options, "F", 1);
1257 goto error;
1258 }
1259
1260 if ((report.header || report.header_only) && !quiet) {
1261 perf_session__fprintf_info(session, stdout,
1262 report.show_full_info);
1263 if (report.header_only) {
1264 ret = 0;
1265 goto error;
1266 }
1267 } else if (use_browser == 0 && !quiet &&
1268 !report.stats_mode && !report.tasks_mode) {
1269 fputs("# To display the perf.data header info, please use --header/--header-only options.\n#\n",
1270 stdout);
1271 }
1272
1273 /*
1274 * Only in the TUI browser we are doing integrated annotation,
1275 * so don't allocate extra space that won't be used in the stdio
1276 * implementation.
1277 */
1278 if (ui__has_annotation()) {
1279 ret = symbol__annotation_init();
1280 if (ret < 0)
1281 goto error;
1282 /*
1283 * For searching by name on the "Browse map details".
1284 * providing it only in verbose mode not to bloat too
1285 * much struct symbol.
1286 */
1287 if (verbose > 0) {
1288 /*
1289 * XXX: Need to provide a less kludgy way to ask for
1290 * more space per symbol, the u32 is for the index on
1291 * the ui browser.
1292 * See symbol__browser_index.
1293 */
1294 symbol_conf.priv_size += sizeof(u32);
1295 symbol_conf.sort_by_name = true;
1296 }
1297 }
1298
1299 if (symbol__init(&session->header.env) < 0)
1300 goto error;
1301
1302 report.ptime_range = perf_time__range_alloc(report.time_str,
1303 &report.range_size);
1304 if (!report.ptime_range) {
1305 ret = -ENOMEM;
1306 goto error;
1307 }
1308
1309 if (perf_time__parse_str(report.ptime_range, report.time_str) != 0) {
1310 if (session->evlist->first_sample_time == 0 &&
1311 session->evlist->last_sample_time == 0) {
1312 pr_err("HINT: no first/last sample time found in perf data.\n"
1313 "Please use latest perf binary to execute 'perf record'\n"
1314 "(if '--buildid-all' is enabled, please set '--timestamp-boundary').\n");
1315 ret = -EINVAL;
1316 goto error;
1317 }
1318
1319 report.range_num = perf_time__percent_parse_str(
1320 report.ptime_range, report.range_size,
1321 report.time_str,
1322 session->evlist->first_sample_time,
1323 session->evlist->last_sample_time);
1324
1325 if (report.range_num < 0) {
1326 pr_err("Invalid time string\n");
1327 ret = -EINVAL;
1328 goto error;
1329 }
1330 } else {
1331 report.range_num = 1;
1332 }
1333
1334 sort__setup_elide(stdout);
1335
1336 ret = __cmd_report(&report);
1337 if (ret == K_SWITCH_INPUT_DATA) {
1338 perf_session__delete(session);
1339 goto repeat;
1340 } else
1341 ret = 0;
1342
1343 error:
1344 zfree(&report.ptime_range);
1345
1346 perf_session__delete(session);
1347 return ret;
1348 }
CRIS linux kernel tree