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20#include "builtin.h"
21
22#include "perf.h"
23
24#include "util/annotate.h"
25#include "util/config.h"
26#include "util/color.h"
27#include "util/drv_configs.h"
28#include "util/evlist.h"
29#include "util/evsel.h"
30#include "util/event.h"
31#include "util/machine.h"
32#include "util/session.h"
33#include "util/symbol.h"
34#include "util/thread.h"
35#include "util/thread_map.h"
36#include "util/top.h"
37#include <linux/rbtree.h>
38#include <subcmd/parse-options.h>
39#include "util/parse-events.h"
40#include "util/cpumap.h"
41#include "util/xyarray.h"
42#include "util/sort.h"
43#include "util/term.h"
44#include "util/intlist.h"
45#include "util/parse-branch-options.h"
46#include "arch/common.h"
47
48#include "util/debug.h"
49#include "util/ordered-events.h"
50
51#include <assert.h>
52#include <elf.h>
53#include <fcntl.h>
54
55#include <stdio.h>
56#include <termios.h>
57#include <unistd.h>
58#include <inttypes.h>
59
60#include <errno.h>
61#include <time.h>
62#include <sched.h>
63#include <signal.h>
64
65#include <sys/syscall.h>
66#include <sys/ioctl.h>
67#include <poll.h>
68#include <sys/prctl.h>
69#include <sys/wait.h>
70#include <sys/uio.h>
71#include <sys/utsname.h>
72#include <sys/mman.h>
73
74#include <linux/stringify.h>
75#include <linux/time64.h>
76#include <linux/types.h>
77
78#include "sane_ctype.h"
79
80static volatile int done;
81static volatile int resize;
82
83#define HEADER_LINE_NR 5
84
85static void perf_top__update_print_entries(struct perf_top *top)
86{
87 top->print_entries = top->winsize.ws_row - HEADER_LINE_NR;
88}
89
90static void winch_sig(int sig __maybe_unused)
91{
92 resize = 1;
93}
94
95static void perf_top__resize(struct perf_top *top)
96{
97 get_term_dimensions(&top->winsize);
98 perf_top__update_print_entries(top);
99}
100
101static int perf_top__parse_source(struct perf_top *top, struct hist_entry *he)
102{
103 struct perf_evsel *evsel = hists_to_evsel(he->hists);
104 struct symbol *sym;
105 struct annotation *notes;
106 struct map *map;
107 int err = -1;
108
109 if (!he || !he->ms.sym)
110 return -1;
111
112 sym = he->ms.sym;
113 map = he->ms.map;
114
115
116
117
118 if (map->dso->symtab_type == DSO_BINARY_TYPE__KALLSYMS &&
119 !dso__is_kcore(map->dso)) {
120 pr_err("Can't annotate %s: No vmlinux file was found in the "
121 "path\n", sym->name);
122 sleep(1);
123 return -1;
124 }
125
126 notes = symbol__annotation(sym);
127 pthread_mutex_lock(¬es->lock);
128
129 if (!symbol__hists(sym, top->evlist->nr_entries)) {
130 pthread_mutex_unlock(¬es->lock);
131 pr_err("Not enough memory for annotating '%s' symbol!\n",
132 sym->name);
133 sleep(1);
134 return err;
135 }
136
137 err = symbol__annotate(sym, map, evsel, 0, &top->annotation_opts, NULL);
138 if (err == 0) {
139 top->sym_filter_entry = he;
140 } else {
141 char msg[BUFSIZ];
142 symbol__strerror_disassemble(sym, map, err, msg, sizeof(msg));
143 pr_err("Couldn't annotate %s: %s\n", sym->name, msg);
144 }
145
146 pthread_mutex_unlock(¬es->lock);
147 return err;
148}
149
150static void __zero_source_counters(struct hist_entry *he)
151{
152 struct symbol *sym = he->ms.sym;
153 symbol__annotate_zero_histograms(sym);
154}
155
156static void ui__warn_map_erange(struct map *map, struct symbol *sym, u64 ip)
157{
158 struct utsname uts;
159 int err = uname(&uts);
160
161 ui__warning("Out of bounds address found:\n\n"
162 "Addr: %" PRIx64 "\n"
163 "DSO: %s %c\n"
164 "Map: %" PRIx64 "-%" PRIx64 "\n"
165 "Symbol: %" PRIx64 "-%" PRIx64 " %c %s\n"
166 "Arch: %s\n"
167 "Kernel: %s\n"
168 "Tools: %s\n\n"
169 "Not all samples will be on the annotation output.\n\n"
170 "Please report to linux-kernel@vger.kernel.org\n",
171 ip, map->dso->long_name, dso__symtab_origin(map->dso),
172 map->start, map->end, sym->start, sym->end,
173 sym->binding == STB_GLOBAL ? 'g' :
174 sym->binding == STB_LOCAL ? 'l' : 'w', sym->name,
175 err ? "[unknown]" : uts.machine,
176 err ? "[unknown]" : uts.release, perf_version_string);
177 if (use_browser <= 0)
178 sleep(5);
179
180 map->erange_warned = true;
181}
182
183static void perf_top__record_precise_ip(struct perf_top *top,
184 struct hist_entry *he,
185 struct perf_sample *sample,
186 struct perf_evsel *evsel, u64 ip)
187{
188 struct annotation *notes;
189 struct symbol *sym = he->ms.sym;
190 int err = 0;
191
192 if (sym == NULL || (use_browser == 0 &&
193 (top->sym_filter_entry == NULL ||
194 top->sym_filter_entry->ms.sym != sym)))
195 return;
196
197 notes = symbol__annotation(sym);
198
199 if (pthread_mutex_trylock(¬es->lock))
200 return;
201
202 err = hist_entry__inc_addr_samples(he, sample, evsel, ip);
203
204 pthread_mutex_unlock(¬es->lock);
205
206 if (unlikely(err)) {
207
208
209
210
211 pthread_mutex_unlock(&he->hists->lock);
212
213 if (err == -ERANGE && !he->ms.map->erange_warned)
214 ui__warn_map_erange(he->ms.map, sym, ip);
215 else if (err == -ENOMEM) {
216 pr_err("Not enough memory for annotating '%s' symbol!\n",
217 sym->name);
218 sleep(1);
219 }
220
221 pthread_mutex_lock(&he->hists->lock);
222 }
223}
224
225static void perf_top__show_details(struct perf_top *top)
226{
227 struct hist_entry *he = top->sym_filter_entry;
228 struct perf_evsel *evsel = hists_to_evsel(he->hists);
229 struct annotation *notes;
230 struct symbol *symbol;
231 int more;
232
233 if (!he)
234 return;
235
236 symbol = he->ms.sym;
237 notes = symbol__annotation(symbol);
238
239 pthread_mutex_lock(¬es->lock);
240
241 symbol__calc_percent(symbol, evsel);
242
243 if (notes->src == NULL)
244 goto out_unlock;
245
246 printf("Showing %s for %s\n", perf_evsel__name(top->sym_evsel), symbol->name);
247 printf(" Events Pcnt (>=%d%%)\n", top->annotation_opts.min_pcnt);
248
249 more = symbol__annotate_printf(symbol, he->ms.map, top->sym_evsel, &top->annotation_opts);
250
251 if (top->evlist->enabled) {
252 if (top->zero)
253 symbol__annotate_zero_histogram(symbol, top->sym_evsel->idx);
254 else
255 symbol__annotate_decay_histogram(symbol, top->sym_evsel->idx);
256 }
257 if (more != 0)
258 printf("%d lines not displayed, maybe increase display entries [e]\n", more);
259out_unlock:
260 pthread_mutex_unlock(¬es->lock);
261}
262
263static void perf_top__print_sym_table(struct perf_top *top)
264{
265 char bf[160];
266 int printed = 0;
267 const int win_width = top->winsize.ws_col - 1;
268 struct perf_evsel *evsel = top->sym_evsel;
269 struct hists *hists = evsel__hists(evsel);
270
271 puts(CONSOLE_CLEAR);
272
273 perf_top__header_snprintf(top, bf, sizeof(bf));
274 printf("%s\n", bf);
275
276 printf("%-*.*s\n", win_width, win_width, graph_dotted_line);
277
278 if (!top->record_opts.overwrite &&
279 (hists->stats.nr_lost_warned !=
280 hists->stats.nr_events[PERF_RECORD_LOST])) {
281 hists->stats.nr_lost_warned =
282 hists->stats.nr_events[PERF_RECORD_LOST];
283 color_fprintf(stdout, PERF_COLOR_RED,
284 "WARNING: LOST %d chunks, Check IO/CPU overload",
285 hists->stats.nr_lost_warned);
286 ++printed;
287 }
288
289 if (top->sym_filter_entry) {
290 perf_top__show_details(top);
291 return;
292 }
293
294 if (top->evlist->enabled) {
295 if (top->zero) {
296 hists__delete_entries(hists);
297 } else {
298 hists__decay_entries(hists, top->hide_user_symbols,
299 top->hide_kernel_symbols);
300 }
301 }
302
303 hists__collapse_resort(hists, NULL);
304 perf_evsel__output_resort(evsel, NULL);
305
306 hists__output_recalc_col_len(hists, top->print_entries - printed);
307 putchar('\n');
308 hists__fprintf(hists, false, top->print_entries - printed, win_width,
309 top->min_percent, stdout, !symbol_conf.use_callchain);
310}
311
312static void prompt_integer(int *target, const char *msg)
313{
314 char *buf = malloc(0), *p;
315 size_t dummy = 0;
316 int tmp;
317
318 fprintf(stdout, "\n%s: ", msg);
319 if (getline(&buf, &dummy, stdin) < 0)
320 return;
321
322 p = strchr(buf, '\n');
323 if (p)
324 *p = 0;
325
326 p = buf;
327 while(*p) {
328 if (!isdigit(*p))
329 goto out_free;
330 p++;
331 }
332 tmp = strtoul(buf, NULL, 10);
333 *target = tmp;
334out_free:
335 free(buf);
336}
337
338static void prompt_percent(int *target, const char *msg)
339{
340 int tmp = 0;
341
342 prompt_integer(&tmp, msg);
343 if (tmp >= 0 && tmp <= 100)
344 *target = tmp;
345}
346
347static void perf_top__prompt_symbol(struct perf_top *top, const char *msg)
348{
349 char *buf = malloc(0), *p;
350 struct hist_entry *syme = top->sym_filter_entry, *n, *found = NULL;
351 struct hists *hists = evsel__hists(top->sym_evsel);
352 struct rb_node *next;
353 size_t dummy = 0;
354
355
356 if (syme) {
357 __zero_source_counters(syme);
358 top->sym_filter_entry = NULL;
359 }
360
361 fprintf(stdout, "\n%s: ", msg);
362 if (getline(&buf, &dummy, stdin) < 0)
363 goto out_free;
364
365 p = strchr(buf, '\n');
366 if (p)
367 *p = 0;
368
369 next = rb_first(&hists->entries);
370 while (next) {
371 n = rb_entry(next, struct hist_entry, rb_node);
372 if (n->ms.sym && !strcmp(buf, n->ms.sym->name)) {
373 found = n;
374 break;
375 }
376 next = rb_next(&n->rb_node);
377 }
378
379 if (!found) {
380 fprintf(stderr, "Sorry, %s is not active.\n", buf);
381 sleep(1);
382 } else
383 perf_top__parse_source(top, found);
384
385out_free:
386 free(buf);
387}
388
389static void perf_top__print_mapped_keys(struct perf_top *top)
390{
391 char *name = NULL;
392
393 if (top->sym_filter_entry) {
394 struct symbol *sym = top->sym_filter_entry->ms.sym;
395 name = sym->name;
396 }
397
398 fprintf(stdout, "\nMapped keys:\n");
399 fprintf(stdout, "\t[d] display refresh delay. \t(%d)\n", top->delay_secs);
400 fprintf(stdout, "\t[e] display entries (lines). \t(%d)\n", top->print_entries);
401
402 if (top->evlist->nr_entries > 1)
403 fprintf(stdout, "\t[E] active event counter. \t(%s)\n", perf_evsel__name(top->sym_evsel));
404
405 fprintf(stdout, "\t[f] profile display filter (count). \t(%d)\n", top->count_filter);
406
407 fprintf(stdout, "\t[F] annotate display filter (percent). \t(%d%%)\n", top->annotation_opts.min_pcnt);
408 fprintf(stdout, "\t[s] annotate symbol. \t(%s)\n", name?: "NULL");
409 fprintf(stdout, "\t[S] stop annotation.\n");
410
411 fprintf(stdout,
412 "\t[K] hide kernel symbols. \t(%s)\n",
413 top->hide_kernel_symbols ? "yes" : "no");
414 fprintf(stdout,
415 "\t[U] hide user symbols. \t(%s)\n",
416 top->hide_user_symbols ? "yes" : "no");
417 fprintf(stdout, "\t[z] toggle sample zeroing. \t(%d)\n", top->zero ? 1 : 0);
418 fprintf(stdout, "\t[qQ] quit.\n");
419}
420
421static int perf_top__key_mapped(struct perf_top *top, int c)
422{
423 switch (c) {
424 case 'd':
425 case 'e':
426 case 'f':
427 case 'z':
428 case 'q':
429 case 'Q':
430 case 'K':
431 case 'U':
432 case 'F':
433 case 's':
434 case 'S':
435 return 1;
436 case 'E':
437 return top->evlist->nr_entries > 1 ? 1 : 0;
438 default:
439 break;
440 }
441
442 return 0;
443}
444
445static bool perf_top__handle_keypress(struct perf_top *top, int c)
446{
447 bool ret = true;
448
449 if (!perf_top__key_mapped(top, c)) {
450 struct pollfd stdin_poll = { .fd = 0, .events = POLLIN };
451 struct termios save;
452
453 perf_top__print_mapped_keys(top);
454 fprintf(stdout, "\nEnter selection, or unmapped key to continue: ");
455 fflush(stdout);
456
457 set_term_quiet_input(&save);
458
459 poll(&stdin_poll, 1, -1);
460 c = getc(stdin);
461
462 tcsetattr(0, TCSAFLUSH, &save);
463 if (!perf_top__key_mapped(top, c))
464 return ret;
465 }
466
467 switch (c) {
468 case 'd':
469 prompt_integer(&top->delay_secs, "Enter display delay");
470 if (top->delay_secs < 1)
471 top->delay_secs = 1;
472 break;
473 case 'e':
474 prompt_integer(&top->print_entries, "Enter display entries (lines)");
475 if (top->print_entries == 0) {
476 perf_top__resize(top);
477 signal(SIGWINCH, winch_sig);
478 } else {
479 signal(SIGWINCH, SIG_DFL);
480 }
481 break;
482 case 'E':
483 if (top->evlist->nr_entries > 1) {
484
485 int counter = 0;
486
487 fprintf(stderr, "\nAvailable events:");
488
489 evlist__for_each_entry(top->evlist, top->sym_evsel)
490 fprintf(stderr, "\n\t%d %s", top->sym_evsel->idx, perf_evsel__name(top->sym_evsel));
491
492 prompt_integer(&counter, "Enter details event counter");
493
494 if (counter >= top->evlist->nr_entries) {
495 top->sym_evsel = perf_evlist__first(top->evlist);
496 fprintf(stderr, "Sorry, no such event, using %s.\n", perf_evsel__name(top->sym_evsel));
497 sleep(1);
498 break;
499 }
500 evlist__for_each_entry(top->evlist, top->sym_evsel)
501 if (top->sym_evsel->idx == counter)
502 break;
503 } else
504 top->sym_evsel = perf_evlist__first(top->evlist);
505 break;
506 case 'f':
507 prompt_integer(&top->count_filter, "Enter display event count filter");
508 break;
509 case 'F':
510 prompt_percent(&top->annotation_opts.min_pcnt,
511 "Enter details display event filter (percent)");
512 break;
513 case 'K':
514 top->hide_kernel_symbols = !top->hide_kernel_symbols;
515 break;
516 case 'q':
517 case 'Q':
518 printf("exiting.\n");
519 if (top->dump_symtab)
520 perf_session__fprintf_dsos(top->session, stderr);
521 ret = false;
522 break;
523 case 's':
524 perf_top__prompt_symbol(top, "Enter details symbol");
525 break;
526 case 'S':
527 if (!top->sym_filter_entry)
528 break;
529 else {
530 struct hist_entry *syme = top->sym_filter_entry;
531
532 top->sym_filter_entry = NULL;
533 __zero_source_counters(syme);
534 }
535 break;
536 case 'U':
537 top->hide_user_symbols = !top->hide_user_symbols;
538 break;
539 case 'z':
540 top->zero = !top->zero;
541 break;
542 default:
543 break;
544 }
545
546 return ret;
547}
548
549static void perf_top__sort_new_samples(void *arg)
550{
551 struct perf_top *t = arg;
552 struct perf_evsel *evsel = t->sym_evsel;
553 struct hists *hists;
554
555 if (t->evlist->selected != NULL)
556 t->sym_evsel = t->evlist->selected;
557
558 hists = evsel__hists(evsel);
559
560 if (t->evlist->enabled) {
561 if (t->zero) {
562 hists__delete_entries(hists);
563 } else {
564 hists__decay_entries(hists, t->hide_user_symbols,
565 t->hide_kernel_symbols);
566 }
567 }
568
569 hists__collapse_resort(hists, NULL);
570 perf_evsel__output_resort(evsel, NULL);
571
572 if (t->lost || t->drop)
573 pr_warning("Too slow to read ring buffer (change period (-c/-F) or limit CPUs (-C)\n");
574}
575
576static void stop_top(void)
577{
578 session_done = 1;
579 done = 1;
580}
581
582static void *display_thread_tui(void *arg)
583{
584 struct perf_evsel *pos;
585 struct perf_top *top = arg;
586 const char *help = "For a higher level overview, try: perf top --sort comm,dso";
587 struct hist_browser_timer hbt = {
588 .timer = perf_top__sort_new_samples,
589 .arg = top,
590 .refresh = top->delay_secs,
591 };
592
593
594
595
596
597
598 unshare(CLONE_FS);
599
600 perf_top__sort_new_samples(top);
601
602
603
604
605
606
607 evlist__for_each_entry(top->evlist, pos) {
608 struct hists *hists = evsel__hists(pos);
609 hists->uid_filter_str = top->record_opts.target.uid_str;
610 }
611
612 perf_evlist__tui_browse_hists(top->evlist, help, &hbt,
613 top->min_percent,
614 &top->session->header.env,
615 !top->record_opts.overwrite,
616 &top->annotation_opts);
617
618 stop_top();
619 return NULL;
620}
621
622static void display_sig(int sig __maybe_unused)
623{
624 stop_top();
625}
626
627static void display_setup_sig(void)
628{
629 signal(SIGSEGV, sighandler_dump_stack);
630 signal(SIGFPE, sighandler_dump_stack);
631 signal(SIGINT, display_sig);
632 signal(SIGQUIT, display_sig);
633 signal(SIGTERM, display_sig);
634}
635
636static void *display_thread(void *arg)
637{
638 struct pollfd stdin_poll = { .fd = 0, .events = POLLIN };
639 struct termios save;
640 struct perf_top *top = arg;
641 int delay_msecs, c;
642
643
644
645
646
647
648 unshare(CLONE_FS);
649
650 display_setup_sig();
651 pthread__unblock_sigwinch();
652repeat:
653 delay_msecs = top->delay_secs * MSEC_PER_SEC;
654 set_term_quiet_input(&save);
655
656 getc(stdin);
657
658 while (!done) {
659 perf_top__print_sym_table(top);
660
661
662
663
664 switch (poll(&stdin_poll, 1, delay_msecs)) {
665 case 0:
666 continue;
667 case -1:
668 if (errno == EINTR)
669 continue;
670 __fallthrough;
671 default:
672 c = getc(stdin);
673 tcsetattr(0, TCSAFLUSH, &save);
674
675 if (perf_top__handle_keypress(top, c))
676 goto repeat;
677 stop_top();
678 }
679 }
680
681 tcsetattr(0, TCSAFLUSH, &save);
682 return NULL;
683}
684
685static int hist_iter__top_callback(struct hist_entry_iter *iter,
686 struct addr_location *al, bool single,
687 void *arg)
688{
689 struct perf_top *top = arg;
690 struct hist_entry *he = iter->he;
691 struct perf_evsel *evsel = iter->evsel;
692
693 if (perf_hpp_list.sym && single)
694 perf_top__record_precise_ip(top, he, iter->sample, evsel, al->addr);
695
696 hist__account_cycles(iter->sample->branch_stack, al, iter->sample,
697 !(top->record_opts.branch_stack & PERF_SAMPLE_BRANCH_ANY));
698 return 0;
699}
700
701static void perf_event__process_sample(struct perf_tool *tool,
702 const union perf_event *event,
703 struct perf_evsel *evsel,
704 struct perf_sample *sample,
705 struct machine *machine)
706{
707 struct perf_top *top = container_of(tool, struct perf_top, tool);
708 struct addr_location al;
709 int err;
710
711 if (!machine && perf_guest) {
712 static struct intlist *seen;
713
714 if (!seen)
715 seen = intlist__new(NULL);
716
717 if (!intlist__has_entry(seen, sample->pid)) {
718 pr_err("Can't find guest [%d]'s kernel information\n",
719 sample->pid);
720 intlist__add(seen, sample->pid);
721 }
722 return;
723 }
724
725 if (!machine) {
726 pr_err("%u unprocessable samples recorded.\r",
727 top->session->evlist->stats.nr_unprocessable_samples++);
728 return;
729 }
730
731 if (event->header.misc & PERF_RECORD_MISC_EXACT_IP)
732 top->exact_samples++;
733
734 if (machine__resolve(machine, &al, sample) < 0)
735 return;
736
737 if (!machine->kptr_restrict_warned &&
738 symbol_conf.kptr_restrict &&
739 al.cpumode == PERF_RECORD_MISC_KERNEL) {
740 if (!perf_evlist__exclude_kernel(top->session->evlist)) {
741 ui__warning(
742"Kernel address maps (/proc/{kallsyms,modules}) are restricted.\n\n"
743"Check /proc/sys/kernel/kptr_restrict.\n\n"
744"Kernel%s samples will not be resolved.\n",
745 al.map && map__has_symbols(al.map) ?
746 " modules" : "");
747 if (use_browser <= 0)
748 sleep(5);
749 }
750 machine->kptr_restrict_warned = true;
751 }
752
753 if (al.sym == NULL && al.map != NULL) {
754 const char *msg = "Kernel samples will not be resolved.\n";
755
756
757
758
759
760
761
762
763
764
765
766 if (!machine->kptr_restrict_warned && !top->vmlinux_warned &&
767 __map__is_kernel(al.map) && map__has_symbols(al.map)) {
768 if (symbol_conf.vmlinux_name) {
769 char serr[256];
770 dso__strerror_load(al.map->dso, serr, sizeof(serr));
771 ui__warning("The %s file can't be used: %s\n%s",
772 symbol_conf.vmlinux_name, serr, msg);
773 } else {
774 ui__warning("A vmlinux file was not found.\n%s",
775 msg);
776 }
777
778 if (use_browser <= 0)
779 sleep(5);
780 top->vmlinux_warned = true;
781 }
782 }
783
784 if (al.sym == NULL || !al.sym->idle) {
785 struct hists *hists = evsel__hists(evsel);
786 struct hist_entry_iter iter = {
787 .evsel = evsel,
788 .sample = sample,
789 .add_entry_cb = hist_iter__top_callback,
790 };
791
792 if (symbol_conf.cumulate_callchain)
793 iter.ops = &hist_iter_cumulative;
794 else
795 iter.ops = &hist_iter_normal;
796
797 pthread_mutex_lock(&hists->lock);
798
799 err = hist_entry_iter__add(&iter, &al, top->max_stack, top);
800 if (err < 0)
801 pr_err("Problem incrementing symbol period, skipping event\n");
802
803 pthread_mutex_unlock(&hists->lock);
804 }
805
806 addr_location__put(&al);
807}
808
809static void
810perf_top__process_lost(struct perf_top *top, union perf_event *event,
811 struct perf_evsel *evsel)
812{
813 struct hists *hists = evsel__hists(evsel);
814
815 top->lost += event->lost.lost;
816 top->lost_total += event->lost.lost;
817 hists->stats.total_lost += event->lost.lost;
818}
819
820static void
821perf_top__process_lost_samples(struct perf_top *top,
822 union perf_event *event,
823 struct perf_evsel *evsel)
824{
825 struct hists *hists = evsel__hists(evsel);
826
827 top->lost += event->lost_samples.lost;
828 top->lost_total += event->lost_samples.lost;
829 hists->stats.total_lost_samples += event->lost_samples.lost;
830}
831
832static u64 last_timestamp;
833
834static void perf_top__mmap_read_idx(struct perf_top *top, int idx)
835{
836 struct record_opts *opts = &top->record_opts;
837 struct perf_evlist *evlist = top->evlist;
838 struct perf_mmap *md;
839 union perf_event *event;
840
841 md = opts->overwrite ? &evlist->overwrite_mmap[idx] : &evlist->mmap[idx];
842 if (perf_mmap__read_init(md) < 0)
843 return;
844
845 while ((event = perf_mmap__read_event(md)) != NULL) {
846 int ret;
847
848 ret = perf_evlist__parse_sample_timestamp(evlist, event, &last_timestamp);
849 if (ret && ret != -1)
850 break;
851
852 ret = ordered_events__queue(top->qe.in, event, last_timestamp, 0);
853 if (ret)
854 break;
855
856 perf_mmap__consume(md);
857
858 if (top->qe.rotate) {
859 pthread_mutex_lock(&top->qe.mutex);
860 top->qe.rotate = false;
861 pthread_cond_signal(&top->qe.cond);
862 pthread_mutex_unlock(&top->qe.mutex);
863 }
864 }
865
866 perf_mmap__read_done(md);
867}
868
869static void perf_top__mmap_read(struct perf_top *top)
870{
871 bool overwrite = top->record_opts.overwrite;
872 struct perf_evlist *evlist = top->evlist;
873 int i;
874
875 if (overwrite)
876 perf_evlist__toggle_bkw_mmap(evlist, BKW_MMAP_DATA_PENDING);
877
878 for (i = 0; i < top->evlist->nr_mmaps; i++)
879 perf_top__mmap_read_idx(top, i);
880
881 if (overwrite) {
882 perf_evlist__toggle_bkw_mmap(evlist, BKW_MMAP_EMPTY);
883 perf_evlist__toggle_bkw_mmap(evlist, BKW_MMAP_RUNNING);
884 }
885}
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904static int perf_top__overwrite_check(struct perf_top *top)
905{
906 struct record_opts *opts = &top->record_opts;
907 struct perf_evlist *evlist = top->evlist;
908 struct perf_evsel_config_term *term;
909 struct list_head *config_terms;
910 struct perf_evsel *evsel;
911 int set, overwrite = -1;
912
913 evlist__for_each_entry(evlist, evsel) {
914 set = -1;
915 config_terms = &evsel->config_terms;
916 list_for_each_entry(term, config_terms, list) {
917 if (term->type == PERF_EVSEL__CONFIG_TERM_OVERWRITE)
918 set = term->val.overwrite ? 1 : 0;
919 }
920
921
922 if ((overwrite < 0) && (set < 0))
923 continue;
924
925
926 if ((overwrite >= 0) && (set >= 0) && (overwrite != set))
927 return -1;
928
929
930 if ((overwrite >= 0) && (set < 0))
931 return -1;
932
933
934 if ((overwrite < 0) && (set >= 0)) {
935
936 if (evsel == perf_evlist__first(evlist))
937 overwrite = set;
938 else
939 return -1;
940 }
941 }
942
943 if ((overwrite >= 0) && (opts->overwrite != overwrite))
944 opts->overwrite = overwrite;
945
946 return 0;
947}
948
949static int perf_top_overwrite_fallback(struct perf_top *top,
950 struct perf_evsel *evsel)
951{
952 struct record_opts *opts = &top->record_opts;
953 struct perf_evlist *evlist = top->evlist;
954 struct perf_evsel *counter;
955
956 if (!opts->overwrite)
957 return 0;
958
959
960 if (evsel != perf_evlist__first(evlist))
961 return 0;
962
963 evlist__for_each_entry(evlist, counter)
964 counter->attr.write_backward = false;
965 opts->overwrite = false;
966 pr_debug2("fall back to non-overwrite mode\n");
967 return 1;
968}
969
970static int perf_top__start_counters(struct perf_top *top)
971{
972 char msg[BUFSIZ];
973 struct perf_evsel *counter;
974 struct perf_evlist *evlist = top->evlist;
975 struct record_opts *opts = &top->record_opts;
976
977 if (perf_top__overwrite_check(top)) {
978 ui__error("perf top only support consistent per-event "
979 "overwrite setting for all events\n");
980 goto out_err;
981 }
982
983 perf_evlist__config(evlist, opts, &callchain_param);
984
985 evlist__for_each_entry(evlist, counter) {
986try_again:
987 if (perf_evsel__open(counter, top->evlist->cpus,
988 top->evlist->threads) < 0) {
989
990
991
992
993
994
995
996
997
998
999
1000 if (perf_missing_features.write_backward &&
1001 perf_top_overwrite_fallback(top, counter))
1002 goto try_again;
1003
1004 if (perf_evsel__fallback(counter, errno, msg, sizeof(msg))) {
1005 if (verbose > 0)
1006 ui__warning("%s\n", msg);
1007 goto try_again;
1008 }
1009
1010 perf_evsel__open_strerror(counter, &opts->target,
1011 errno, msg, sizeof(msg));
1012 ui__error("%s\n", msg);
1013 goto out_err;
1014 }
1015 }
1016
1017 if (perf_evlist__mmap(evlist, opts->mmap_pages) < 0) {
1018 ui__error("Failed to mmap with %d (%s)\n",
1019 errno, str_error_r(errno, msg, sizeof(msg)));
1020 goto out_err;
1021 }
1022
1023 return 0;
1024
1025out_err:
1026 return -1;
1027}
1028
1029static int callchain_param__setup_sample_type(struct callchain_param *callchain)
1030{
1031 if (!perf_hpp_list.sym) {
1032 if (callchain->enabled) {
1033 ui__error("Selected -g but \"sym\" not present in --sort/-s.");
1034 return -EINVAL;
1035 }
1036 } else if (callchain->mode != CHAIN_NONE) {
1037 if (callchain_register_param(callchain) < 0) {
1038 ui__error("Can't register callchain params.\n");
1039 return -EINVAL;
1040 }
1041 }
1042
1043 return 0;
1044}
1045
1046static struct ordered_events *rotate_queues(struct perf_top *top)
1047{
1048 struct ordered_events *in = top->qe.in;
1049
1050 if (top->qe.in == &top->qe.data[1])
1051 top->qe.in = &top->qe.data[0];
1052 else
1053 top->qe.in = &top->qe.data[1];
1054
1055 return in;
1056}
1057
1058static void *process_thread(void *arg)
1059{
1060 struct perf_top *top = arg;
1061
1062 while (!done) {
1063 struct ordered_events *out, *in = top->qe.in;
1064
1065 if (!in->nr_events) {
1066 usleep(100);
1067 continue;
1068 }
1069
1070 out = rotate_queues(top);
1071
1072 pthread_mutex_lock(&top->qe.mutex);
1073 top->qe.rotate = true;
1074 pthread_cond_wait(&top->qe.cond, &top->qe.mutex);
1075 pthread_mutex_unlock(&top->qe.mutex);
1076
1077 if (ordered_events__flush(out, OE_FLUSH__TOP))
1078 pr_err("failed to process events\n");
1079 }
1080
1081 return NULL;
1082}
1083
1084
1085
1086
1087static int should_drop(struct ordered_event *qevent, struct perf_top *top)
1088{
1089 union perf_event *event = qevent->event;
1090 u64 delay_timestamp;
1091
1092 if (event->header.type != PERF_RECORD_SAMPLE)
1093 return false;
1094
1095 delay_timestamp = qevent->timestamp + top->delay_secs * NSEC_PER_SEC;
1096 return delay_timestamp < last_timestamp;
1097}
1098
1099static int deliver_event(struct ordered_events *qe,
1100 struct ordered_event *qevent)
1101{
1102 struct perf_top *top = qe->data;
1103 struct perf_evlist *evlist = top->evlist;
1104 struct perf_session *session = top->session;
1105 union perf_event *event = qevent->event;
1106 struct perf_sample sample;
1107 struct perf_evsel *evsel;
1108 struct machine *machine;
1109 int ret = -1;
1110
1111 if (should_drop(qevent, top)) {
1112 top->drop++;
1113 top->drop_total++;
1114 return 0;
1115 }
1116
1117 ret = perf_evlist__parse_sample(evlist, event, &sample);
1118 if (ret) {
1119 pr_err("Can't parse sample, err = %d\n", ret);
1120 goto next_event;
1121 }
1122
1123 evsel = perf_evlist__id2evsel(session->evlist, sample.id);
1124 assert(evsel != NULL);
1125
1126 if (event->header.type == PERF_RECORD_SAMPLE)
1127 ++top->samples;
1128
1129 switch (sample.cpumode) {
1130 case PERF_RECORD_MISC_USER:
1131 ++top->us_samples;
1132 if (top->hide_user_symbols)
1133 goto next_event;
1134 machine = &session->machines.host;
1135 break;
1136 case PERF_RECORD_MISC_KERNEL:
1137 ++top->kernel_samples;
1138 if (top->hide_kernel_symbols)
1139 goto next_event;
1140 machine = &session->machines.host;
1141 break;
1142 case PERF_RECORD_MISC_GUEST_KERNEL:
1143 ++top->guest_kernel_samples;
1144 machine = perf_session__find_machine(session,
1145 sample.pid);
1146 break;
1147 case PERF_RECORD_MISC_GUEST_USER:
1148 ++top->guest_us_samples;
1149
1150
1151
1152
1153 goto next_event;
1154 default:
1155 if (event->header.type == PERF_RECORD_SAMPLE)
1156 goto next_event;
1157 machine = &session->machines.host;
1158 break;
1159 }
1160
1161 if (event->header.type == PERF_RECORD_SAMPLE) {
1162 perf_event__process_sample(&top->tool, event, evsel,
1163 &sample, machine);
1164 } else if (event->header.type == PERF_RECORD_LOST) {
1165 perf_top__process_lost(top, event, evsel);
1166 } else if (event->header.type == PERF_RECORD_LOST_SAMPLES) {
1167 perf_top__process_lost_samples(top, event, evsel);
1168 } else if (event->header.type < PERF_RECORD_MAX) {
1169 hists__inc_nr_events(evsel__hists(evsel), event->header.type);
1170 machine__process_event(machine, event, &sample);
1171 } else
1172 ++session->evlist->stats.nr_unknown_events;
1173
1174 ret = 0;
1175next_event:
1176 return ret;
1177}
1178
1179static void init_process_thread(struct perf_top *top)
1180{
1181 ordered_events__init(&top->qe.data[0], deliver_event, top);
1182 ordered_events__init(&top->qe.data[1], deliver_event, top);
1183 ordered_events__set_copy_on_queue(&top->qe.data[0], true);
1184 ordered_events__set_copy_on_queue(&top->qe.data[1], true);
1185 top->qe.in = &top->qe.data[0];
1186 pthread_mutex_init(&top->qe.mutex, NULL);
1187 pthread_cond_init(&top->qe.cond, NULL);
1188}
1189
1190static int __cmd_top(struct perf_top *top)
1191{
1192 char msg[512];
1193 struct perf_evsel *pos;
1194 struct perf_evsel_config_term *err_term;
1195 struct perf_evlist *evlist = top->evlist;
1196 struct record_opts *opts = &top->record_opts;
1197 pthread_t thread, thread_process;
1198 int ret;
1199
1200 top->session = perf_session__new(NULL, false, NULL);
1201 if (top->session == NULL)
1202 return -1;
1203
1204 if (!top->annotation_opts.objdump_path) {
1205 ret = perf_env__lookup_objdump(&top->session->header.env,
1206 &top->annotation_opts.objdump_path);
1207 if (ret)
1208 goto out_delete;
1209 }
1210
1211 ret = callchain_param__setup_sample_type(&callchain_param);
1212 if (ret)
1213 goto out_delete;
1214
1215 if (perf_session__register_idle_thread(top->session) < 0)
1216 goto out_delete;
1217
1218 if (top->nr_threads_synthesize > 1)
1219 perf_set_multithreaded();
1220
1221 init_process_thread(top);
1222
1223 machine__synthesize_threads(&top->session->machines.host, &opts->target,
1224 top->evlist->threads, false,
1225 opts->proc_map_timeout,
1226 top->nr_threads_synthesize);
1227
1228 if (top->nr_threads_synthesize > 1)
1229 perf_set_singlethreaded();
1230
1231 if (perf_hpp_list.socket) {
1232 ret = perf_env__read_cpu_topology_map(&perf_env);
1233 if (ret < 0)
1234 goto out_err_cpu_topo;
1235 }
1236
1237 ret = perf_top__start_counters(top);
1238 if (ret)
1239 goto out_delete;
1240
1241 ret = perf_evlist__apply_drv_configs(evlist, &pos, &err_term);
1242 if (ret) {
1243 pr_err("failed to set config \"%s\" on event %s with %d (%s)\n",
1244 err_term->val.drv_cfg, perf_evsel__name(pos), errno,
1245 str_error_r(errno, msg, sizeof(msg)));
1246 goto out_delete;
1247 }
1248
1249 top->session->evlist = top->evlist;
1250 perf_session__set_id_hdr_size(top->session);
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260 if (!target__none(&opts->target))
1261 perf_evlist__enable(top->evlist);
1262
1263 ret = -1;
1264 if (pthread_create(&thread_process, NULL, process_thread, top)) {
1265 ui__error("Could not create process thread.\n");
1266 goto out_delete;
1267 }
1268
1269 if (pthread_create(&thread, NULL, (use_browser > 0 ? display_thread_tui :
1270 display_thread), top)) {
1271 ui__error("Could not create display thread.\n");
1272 goto out_join_thread;
1273 }
1274
1275 if (top->realtime_prio) {
1276 struct sched_param param;
1277
1278 param.sched_priority = top->realtime_prio;
1279 if (sched_setscheduler(0, SCHED_FIFO, ¶m)) {
1280 ui__error("Could not set realtime priority.\n");
1281 goto out_join;
1282 }
1283 }
1284
1285
1286 perf_evlist__poll(top->evlist, 100);
1287
1288 perf_top__mmap_read(top);
1289
1290 while (!done) {
1291 u64 hits = top->samples;
1292
1293 perf_top__mmap_read(top);
1294
1295 if (opts->overwrite || (hits == top->samples))
1296 ret = perf_evlist__poll(top->evlist, 100);
1297
1298 if (resize) {
1299 perf_top__resize(top);
1300 resize = 0;
1301 }
1302 }
1303
1304 ret = 0;
1305out_join:
1306 pthread_join(thread, NULL);
1307out_join_thread:
1308 pthread_cond_signal(&top->qe.cond);
1309 pthread_join(thread_process, NULL);
1310out_delete:
1311 perf_session__delete(top->session);
1312 top->session = NULL;
1313
1314 return ret;
1315
1316out_err_cpu_topo: {
1317 char errbuf[BUFSIZ];
1318 const char *err = str_error_r(-ret, errbuf, sizeof(errbuf));
1319
1320 ui__error("Could not read the CPU topology map: %s\n", err);
1321 goto out_delete;
1322}
1323}
1324
1325static int
1326callchain_opt(const struct option *opt, const char *arg, int unset)
1327{
1328 symbol_conf.use_callchain = true;
1329 return record_callchain_opt(opt, arg, unset);
1330}
1331
1332static int
1333parse_callchain_opt(const struct option *opt, const char *arg, int unset)
1334{
1335 struct callchain_param *callchain = opt->value;
1336
1337 callchain->enabled = !unset;
1338 callchain->record_mode = CALLCHAIN_FP;
1339
1340
1341
1342
1343 if (unset) {
1344 symbol_conf.use_callchain = false;
1345 callchain->record_mode = CALLCHAIN_NONE;
1346 return 0;
1347 }
1348
1349 return parse_callchain_top_opt(arg);
1350}
1351
1352static int perf_top_config(const char *var, const char *value, void *cb __maybe_unused)
1353{
1354 if (!strcmp(var, "top.call-graph")) {
1355 var = "call-graph.record-mode";
1356 return perf_default_config(var, value, cb);
1357 }
1358 if (!strcmp(var, "top.children")) {
1359 symbol_conf.cumulate_callchain = perf_config_bool(var, value);
1360 return 0;
1361 }
1362
1363 return 0;
1364}
1365
1366static int
1367parse_percent_limit(const struct option *opt, const char *arg,
1368 int unset __maybe_unused)
1369{
1370 struct perf_top *top = opt->value;
1371
1372 top->min_percent = strtof(arg, NULL);
1373 return 0;
1374}
1375
1376const char top_callchain_help[] = CALLCHAIN_RECORD_HELP CALLCHAIN_REPORT_HELP
1377 "\n\t\t\t\tDefault: fp,graph,0.5,caller,function";
1378
1379int cmd_top(int argc, const char **argv)
1380{
1381 char errbuf[BUFSIZ];
1382 struct perf_top top = {
1383 .count_filter = 5,
1384 .delay_secs = 2,
1385 .record_opts = {
1386 .mmap_pages = UINT_MAX,
1387 .user_freq = UINT_MAX,
1388 .user_interval = ULLONG_MAX,
1389 .freq = 4000,
1390 .target = {
1391 .uses_mmap = true,
1392 },
1393 .proc_map_timeout = 500,
1394
1395
1396
1397
1398
1399
1400
1401 .overwrite = 0,
1402 .sample_time = true,
1403 },
1404 .max_stack = sysctl_perf_event_max_stack,
1405 .annotation_opts = annotation__default_options,
1406 .nr_threads_synthesize = UINT_MAX,
1407 };
1408 struct record_opts *opts = &top.record_opts;
1409 struct target *target = &opts->target;
1410 const struct option options[] = {
1411 OPT_CALLBACK('e', "event", &top.evlist, "event",
1412 "event selector. use 'perf list' to list available events",
1413 parse_events_option),
1414 OPT_U64('c', "count", &opts->user_interval, "event period to sample"),
1415 OPT_STRING('p', "pid", &target->pid, "pid",
1416 "profile events on existing process id"),
1417 OPT_STRING('t', "tid", &target->tid, "tid",
1418 "profile events on existing thread id"),
1419 OPT_BOOLEAN('a', "all-cpus", &target->system_wide,
1420 "system-wide collection from all CPUs"),
1421 OPT_STRING('C', "cpu", &target->cpu_list, "cpu",
1422 "list of cpus to monitor"),
1423 OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
1424 "file", "vmlinux pathname"),
1425 OPT_BOOLEAN(0, "ignore-vmlinux", &symbol_conf.ignore_vmlinux,
1426 "don't load vmlinux even if found"),
1427 OPT_BOOLEAN('K', "hide_kernel_symbols", &top.hide_kernel_symbols,
1428 "hide kernel symbols"),
1429 OPT_CALLBACK('m', "mmap-pages", &opts->mmap_pages, "pages",
1430 "number of mmap data pages",
1431 perf_evlist__parse_mmap_pages),
1432 OPT_INTEGER('r', "realtime", &top.realtime_prio,
1433 "collect data with this RT SCHED_FIFO priority"),
1434 OPT_INTEGER('d', "delay", &top.delay_secs,
1435 "number of seconds to delay between refreshes"),
1436 OPT_BOOLEAN('D', "dump-symtab", &top.dump_symtab,
1437 "dump the symbol table used for profiling"),
1438 OPT_INTEGER('f', "count-filter", &top.count_filter,
1439 "only display functions with more events than this"),
1440 OPT_BOOLEAN(0, "group", &opts->group,
1441 "put the counters into a counter group"),
1442 OPT_BOOLEAN('i', "no-inherit", &opts->no_inherit,
1443 "child tasks do not inherit counters"),
1444 OPT_STRING(0, "sym-annotate", &top.sym_filter, "symbol name",
1445 "symbol to annotate"),
1446 OPT_BOOLEAN('z', "zero", &top.zero, "zero history across updates"),
1447 OPT_CALLBACK('F', "freq", &top.record_opts, "freq or 'max'",
1448 "profile at this frequency",
1449 record__parse_freq),
1450 OPT_INTEGER('E', "entries", &top.print_entries,
1451 "display this many functions"),
1452 OPT_BOOLEAN('U', "hide_user_symbols", &top.hide_user_symbols,
1453 "hide user symbols"),
1454 OPT_BOOLEAN(0, "tui", &top.use_tui, "Use the TUI interface"),
1455 OPT_BOOLEAN(0, "stdio", &top.use_stdio, "Use the stdio interface"),
1456 OPT_INCR('v', "verbose", &verbose,
1457 "be more verbose (show counter open errors, etc)"),
1458 OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
1459 "sort by key(s): pid, comm, dso, symbol, parent, cpu, srcline, ..."
1460 " Please refer the man page for the complete list."),
1461 OPT_STRING(0, "fields", &field_order, "key[,keys...]",
1462 "output field(s): overhead, period, sample plus all of sort keys"),
1463 OPT_BOOLEAN('n', "show-nr-samples", &symbol_conf.show_nr_samples,
1464 "Show a column with the number of samples"),
1465 OPT_CALLBACK_NOOPT('g', NULL, &callchain_param,
1466 NULL, "enables call-graph recording and display",
1467 &callchain_opt),
1468 OPT_CALLBACK(0, "call-graph", &callchain_param,
1469 "record_mode[,record_size],print_type,threshold[,print_limit],order,sort_key[,branch]",
1470 top_callchain_help, &parse_callchain_opt),
1471 OPT_BOOLEAN(0, "children", &symbol_conf.cumulate_callchain,
1472 "Accumulate callchains of children and show total overhead as well"),
1473 OPT_INTEGER(0, "max-stack", &top.max_stack,
1474 "Set the maximum stack depth when parsing the callchain. "
1475 "Default: kernel.perf_event_max_stack or " __stringify(PERF_MAX_STACK_DEPTH)),
1476 OPT_CALLBACK(0, "ignore-callees", NULL, "regex",
1477 "ignore callees of these functions in call graphs",
1478 report_parse_ignore_callees_opt),
1479 OPT_BOOLEAN(0, "show-total-period", &symbol_conf.show_total_period,
1480 "Show a column with the sum of periods"),
1481 OPT_STRING(0, "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
1482 "only consider symbols in these dsos"),
1483 OPT_STRING(0, "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
1484 "only consider symbols in these comms"),
1485 OPT_STRING(0, "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
1486 "only consider these symbols"),
1487 OPT_BOOLEAN(0, "source", &top.annotation_opts.annotate_src,
1488 "Interleave source code with assembly code (default)"),
1489 OPT_BOOLEAN(0, "asm-raw", &top.annotation_opts.show_asm_raw,
1490 "Display raw encoding of assembly instructions (default)"),
1491 OPT_BOOLEAN(0, "demangle-kernel", &symbol_conf.demangle_kernel,
1492 "Enable kernel symbol demangling"),
1493 OPT_STRING(0, "objdump", &top.annotation_opts.objdump_path, "path",
1494 "objdump binary to use for disassembly and annotations"),
1495 OPT_STRING('M', "disassembler-style", &top.annotation_opts.disassembler_style, "disassembler style",
1496 "Specify disassembler style (e.g. -M intel for intel syntax)"),
1497 OPT_STRING('u', "uid", &target->uid_str, "user", "user to profile"),
1498 OPT_CALLBACK(0, "percent-limit", &top, "percent",
1499 "Don't show entries under that percent", parse_percent_limit),
1500 OPT_CALLBACK(0, "percentage", NULL, "relative|absolute",
1501 "How to display percentage of filtered entries", parse_filter_percentage),
1502 OPT_STRING('w', "column-widths", &symbol_conf.col_width_list_str,
1503 "width[,width...]",
1504 "don't try to adjust column width, use these fixed values"),
1505 OPT_UINTEGER(0, "proc-map-timeout", &opts->proc_map_timeout,
1506 "per thread proc mmap processing timeout in ms"),
1507 OPT_CALLBACK_NOOPT('b', "branch-any", &opts->branch_stack,
1508 "branch any", "sample any taken branches",
1509 parse_branch_stack),
1510 OPT_CALLBACK('j', "branch-filter", &opts->branch_stack,
1511 "branch filter mask", "branch stack filter modes",
1512 parse_branch_stack),
1513 OPT_BOOLEAN(0, "raw-trace", &symbol_conf.raw_trace,
1514 "Show raw trace event output (do not use print fmt or plugins)"),
1515 OPT_BOOLEAN(0, "hierarchy", &symbol_conf.report_hierarchy,
1516 "Show entries in a hierarchy"),
1517 OPT_BOOLEAN(0, "overwrite", &top.record_opts.overwrite,
1518 "Use a backward ring buffer, default: no"),
1519 OPT_BOOLEAN(0, "force", &symbol_conf.force, "don't complain, do it"),
1520 OPT_UINTEGER(0, "num-thread-synthesize", &top.nr_threads_synthesize,
1521 "number of thread to run event synthesize"),
1522 OPT_END()
1523 };
1524 const char * const top_usage[] = {
1525 "perf top [<options>]",
1526 NULL
1527 };
1528 int status = hists__init();
1529
1530 if (status < 0)
1531 return status;
1532
1533 top.annotation_opts.min_pcnt = 5;
1534 top.annotation_opts.context = 4;
1535
1536 top.evlist = perf_evlist__new();
1537 if (top.evlist == NULL)
1538 return -ENOMEM;
1539
1540 status = perf_config(perf_top_config, &top);
1541 if (status)
1542 return status;
1543
1544 argc = parse_options(argc, argv, options, top_usage, 0);
1545 if (argc)
1546 usage_with_options(top_usage, options);
1547
1548 if (!top.evlist->nr_entries &&
1549 perf_evlist__add_default(top.evlist) < 0) {
1550 pr_err("Not enough memory for event selector list\n");
1551 goto out_delete_evlist;
1552 }
1553
1554 if (symbol_conf.report_hierarchy) {
1555
1556 symbol_conf.event_group = false;
1557 symbol_conf.cumulate_callchain = false;
1558
1559 if (field_order) {
1560 pr_err("Error: --hierarchy and --fields options cannot be used together\n");
1561 parse_options_usage(top_usage, options, "fields", 0);
1562 parse_options_usage(NULL, options, "hierarchy", 0);
1563 goto out_delete_evlist;
1564 }
1565 }
1566
1567 if (opts->branch_stack && callchain_param.enabled)
1568 symbol_conf.show_branchflag_count = true;
1569
1570 sort__mode = SORT_MODE__TOP;
1571
1572 perf_hpp_list.need_collapse = 1;
1573
1574 if (top.use_stdio)
1575 use_browser = 0;
1576 else if (top.use_tui)
1577 use_browser = 1;
1578
1579 setup_browser(false);
1580
1581 if (setup_sorting(top.evlist) < 0) {
1582 if (sort_order)
1583 parse_options_usage(top_usage, options, "s", 1);
1584 if (field_order)
1585 parse_options_usage(sort_order ? NULL : top_usage,
1586 options, "fields", 0);
1587 goto out_delete_evlist;
1588 }
1589
1590 status = target__validate(target);
1591 if (status) {
1592 target__strerror(target, status, errbuf, BUFSIZ);
1593 ui__warning("%s\n", errbuf);
1594 }
1595
1596 status = target__parse_uid(target);
1597 if (status) {
1598 int saved_errno = errno;
1599
1600 target__strerror(target, status, errbuf, BUFSIZ);
1601 ui__error("%s\n", errbuf);
1602
1603 status = -saved_errno;
1604 goto out_delete_evlist;
1605 }
1606
1607 if (target__none(target))
1608 target->system_wide = true;
1609
1610 if (perf_evlist__create_maps(top.evlist, target) < 0) {
1611 ui__error("Couldn't create thread/CPU maps: %s\n",
1612 errno == ENOENT ? "No such process" : str_error_r(errno, errbuf, sizeof(errbuf)));
1613 goto out_delete_evlist;
1614 }
1615
1616 if (top.delay_secs < 1)
1617 top.delay_secs = 1;
1618
1619 if (record_opts__config(opts)) {
1620 status = -EINVAL;
1621 goto out_delete_evlist;
1622 }
1623
1624 top.sym_evsel = perf_evlist__first(top.evlist);
1625
1626 if (!callchain_param.enabled) {
1627 symbol_conf.cumulate_callchain = false;
1628 perf_hpp__cancel_cumulate();
1629 }
1630
1631 if (symbol_conf.cumulate_callchain && !callchain_param.order_set)
1632 callchain_param.order = ORDER_CALLER;
1633
1634 status = symbol__annotation_init();
1635 if (status < 0)
1636 goto out_delete_evlist;
1637
1638 annotation_config__init();
1639
1640 symbol_conf.try_vmlinux_path = (symbol_conf.vmlinux_name == NULL);
1641 if (symbol__init(NULL) < 0)
1642 return -1;
1643
1644 sort__setup_elide(stdout);
1645
1646 get_term_dimensions(&top.winsize);
1647 if (top.print_entries == 0) {
1648 perf_top__update_print_entries(&top);
1649 signal(SIGWINCH, winch_sig);
1650 }
1651
1652 status = __cmd_top(&top);
1653
1654out_delete_evlist:
1655 perf_evlist__delete(top.evlist);
1656
1657 return status;
1658}
1659
