]>
Commit | Line | Data |
---|---|---|
1 | /* | |
2 | * builtin-top.c | |
3 | * | |
4 | * Builtin top command: Display a continuously updated profile of | |
5 | * any workload, CPU or specific PID. | |
6 | * | |
7 | * Copyright (C) 2008, Red Hat Inc, Ingo Molnar <mingo@redhat.com> | |
8 | * 2011, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com> | |
9 | * | |
10 | * Improvements and fixes by: | |
11 | * | |
12 | * Arjan van de Ven <arjan@linux.intel.com> | |
13 | * Yanmin Zhang <yanmin.zhang@intel.com> | |
14 | * Wu Fengguang <fengguang.wu@intel.com> | |
15 | * Mike Galbraith <efault@gmx.de> | |
16 | * Paul Mackerras <paulus@samba.org> | |
17 | * | |
18 | * Released under the GPL v2. (and only v2, not any later version) | |
19 | */ | |
20 | #include "builtin.h" | |
21 | ||
22 | #include "perf.h" | |
23 | ||
24 | #include "util/annotate.h" | |
25 | #include "util/cache.h" | |
26 | #include "util/color.h" | |
27 | #include "util/evlist.h" | |
28 | #include "util/evsel.h" | |
29 | #include "util/session.h" | |
30 | #include "util/symbol.h" | |
31 | #include "util/thread.h" | |
32 | #include "util/thread_map.h" | |
33 | #include "util/top.h" | |
34 | #include "util/util.h" | |
35 | #include <linux/rbtree.h> | |
36 | #include "util/parse-options.h" | |
37 | #include "util/parse-events.h" | |
38 | #include "util/cpumap.h" | |
39 | #include "util/xyarray.h" | |
40 | #include "util/sort.h" | |
41 | ||
42 | #include "util/debug.h" | |
43 | ||
44 | #include <assert.h> | |
45 | #include <fcntl.h> | |
46 | ||
47 | #include <stdio.h> | |
48 | #include <termios.h> | |
49 | #include <unistd.h> | |
50 | #include <inttypes.h> | |
51 | ||
52 | #include <errno.h> | |
53 | #include <time.h> | |
54 | #include <sched.h> | |
55 | ||
56 | #include <sys/syscall.h> | |
57 | #include <sys/ioctl.h> | |
58 | #include <sys/poll.h> | |
59 | #include <sys/prctl.h> | |
60 | #include <sys/wait.h> | |
61 | #include <sys/uio.h> | |
62 | #include <sys/mman.h> | |
63 | ||
64 | #include <linux/unistd.h> | |
65 | #include <linux/types.h> | |
66 | ||
67 | static struct perf_top top = { | |
68 | .count_filter = 5, | |
69 | .delay_secs = 2, | |
70 | .target_pid = -1, | |
71 | .target_tid = -1, | |
72 | .freq = 1000, /* 1 KHz */ | |
73 | }; | |
74 | ||
75 | static bool system_wide = false; | |
76 | ||
77 | static bool use_tui, use_stdio; | |
78 | ||
79 | static bool sort_has_symbols; | |
80 | ||
81 | static bool dont_use_callchains; | |
82 | static char callchain_default_opt[] = "fractal,0.5,callee"; | |
83 | ||
84 | ||
85 | static int default_interval = 0; | |
86 | ||
87 | static bool kptr_restrict_warned; | |
88 | static bool vmlinux_warned; | |
89 | static bool inherit = false; | |
90 | static int realtime_prio = 0; | |
91 | static bool group = false; | |
92 | static bool sample_id_all_avail = true; | |
93 | static unsigned int mmap_pages = 128; | |
94 | ||
95 | static bool dump_symtab = false; | |
96 | ||
97 | static struct winsize winsize; | |
98 | ||
99 | static const char *sym_filter = NULL; | |
100 | static int sym_pcnt_filter = 5; | |
101 | ||
102 | /* | |
103 | * Source functions | |
104 | */ | |
105 | ||
106 | void get_term_dimensions(struct winsize *ws) | |
107 | { | |
108 | char *s = getenv("LINES"); | |
109 | ||
110 | if (s != NULL) { | |
111 | ws->ws_row = atoi(s); | |
112 | s = getenv("COLUMNS"); | |
113 | if (s != NULL) { | |
114 | ws->ws_col = atoi(s); | |
115 | if (ws->ws_row && ws->ws_col) | |
116 | return; | |
117 | } | |
118 | } | |
119 | #ifdef TIOCGWINSZ | |
120 | if (ioctl(1, TIOCGWINSZ, ws) == 0 && | |
121 | ws->ws_row && ws->ws_col) | |
122 | return; | |
123 | #endif | |
124 | ws->ws_row = 25; | |
125 | ws->ws_col = 80; | |
126 | } | |
127 | ||
128 | static void update_print_entries(struct winsize *ws) | |
129 | { | |
130 | top.print_entries = ws->ws_row; | |
131 | ||
132 | if (top.print_entries > 9) | |
133 | top.print_entries -= 9; | |
134 | } | |
135 | ||
136 | static void sig_winch_handler(int sig __used) | |
137 | { | |
138 | get_term_dimensions(&winsize); | |
139 | update_print_entries(&winsize); | |
140 | } | |
141 | ||
142 | static int parse_source(struct hist_entry *he) | |
143 | { | |
144 | struct symbol *sym; | |
145 | struct annotation *notes; | |
146 | struct map *map; | |
147 | int err = -1; | |
148 | ||
149 | if (!he || !he->ms.sym) | |
150 | return -1; | |
151 | ||
152 | sym = he->ms.sym; | |
153 | map = he->ms.map; | |
154 | ||
155 | /* | |
156 | * We can't annotate with just /proc/kallsyms | |
157 | */ | |
158 | if (map->dso->symtab_type == SYMTAB__KALLSYMS) { | |
159 | pr_err("Can't annotate %s: No vmlinux file was found in the " | |
160 | "path\n", sym->name); | |
161 | sleep(1); | |
162 | return -1; | |
163 | } | |
164 | ||
165 | notes = symbol__annotation(sym); | |
166 | if (notes->src != NULL) { | |
167 | pthread_mutex_lock(¬es->lock); | |
168 | goto out_assign; | |
169 | } | |
170 | ||
171 | pthread_mutex_lock(¬es->lock); | |
172 | ||
173 | if (symbol__alloc_hist(sym, top.evlist->nr_entries) < 0) { | |
174 | pthread_mutex_unlock(¬es->lock); | |
175 | pr_err("Not enough memory for annotating '%s' symbol!\n", | |
176 | sym->name); | |
177 | sleep(1); | |
178 | return err; | |
179 | } | |
180 | ||
181 | err = symbol__annotate(sym, map, 0); | |
182 | if (err == 0) { | |
183 | out_assign: | |
184 | top.sym_filter_entry = he; | |
185 | } | |
186 | ||
187 | pthread_mutex_unlock(¬es->lock); | |
188 | return err; | |
189 | } | |
190 | ||
191 | static void __zero_source_counters(struct hist_entry *he) | |
192 | { | |
193 | struct symbol *sym = he->ms.sym; | |
194 | symbol__annotate_zero_histograms(sym); | |
195 | } | |
196 | ||
197 | static void record_precise_ip(struct hist_entry *he, int counter, u64 ip) | |
198 | { | |
199 | struct annotation *notes; | |
200 | struct symbol *sym; | |
201 | ||
202 | if (he == NULL || he->ms.sym == NULL || | |
203 | ((top.sym_filter_entry == NULL || | |
204 | top.sym_filter_entry->ms.sym != he->ms.sym) && use_browser != 1)) | |
205 | return; | |
206 | ||
207 | sym = he->ms.sym; | |
208 | notes = symbol__annotation(sym); | |
209 | ||
210 | if (pthread_mutex_trylock(¬es->lock)) | |
211 | return; | |
212 | ||
213 | if (notes->src == NULL && | |
214 | symbol__alloc_hist(sym, top.evlist->nr_entries) < 0) { | |
215 | pthread_mutex_unlock(¬es->lock); | |
216 | pr_err("Not enough memory for annotating '%s' symbol!\n", | |
217 | sym->name); | |
218 | sleep(1); | |
219 | return; | |
220 | } | |
221 | ||
222 | ip = he->ms.map->map_ip(he->ms.map, ip); | |
223 | symbol__inc_addr_samples(sym, he->ms.map, counter, ip); | |
224 | ||
225 | pthread_mutex_unlock(¬es->lock); | |
226 | } | |
227 | ||
228 | static void show_details(struct hist_entry *he) | |
229 | { | |
230 | struct annotation *notes; | |
231 | struct symbol *symbol; | |
232 | int more; | |
233 | ||
234 | if (!he) | |
235 | return; | |
236 | ||
237 | symbol = he->ms.sym; | |
238 | notes = symbol__annotation(symbol); | |
239 | ||
240 | pthread_mutex_lock(¬es->lock); | |
241 | ||
242 | if (notes->src == NULL) | |
243 | goto out_unlock; | |
244 | ||
245 | printf("Showing %s for %s\n", event_name(top.sym_evsel), symbol->name); | |
246 | printf(" Events Pcnt (>=%d%%)\n", sym_pcnt_filter); | |
247 | ||
248 | more = symbol__annotate_printf(symbol, he->ms.map, top.sym_evsel->idx, | |
249 | 0, sym_pcnt_filter, top.print_entries, 4); | |
250 | if (top.zero) | |
251 | symbol__annotate_zero_histogram(symbol, top.sym_evsel->idx); | |
252 | else | |
253 | symbol__annotate_decay_histogram(symbol, top.sym_evsel->idx); | |
254 | if (more != 0) | |
255 | printf("%d lines not displayed, maybe increase display entries [e]\n", more); | |
256 | out_unlock: | |
257 | pthread_mutex_unlock(¬es->lock); | |
258 | } | |
259 | ||
260 | static const char CONSOLE_CLEAR[] = "\e[H\e[2J"; | |
261 | ||
262 | static struct hist_entry * | |
263 | perf_session__add_hist_entry(struct perf_session *session, | |
264 | struct addr_location *al, | |
265 | struct perf_sample *sample, | |
266 | struct perf_evsel *evsel) | |
267 | { | |
268 | struct hist_entry *he; | |
269 | ||
270 | he = __hists__add_entry(&evsel->hists, al, NULL, sample->period); | |
271 | if (he == NULL) | |
272 | return NULL; | |
273 | ||
274 | session->hists.stats.total_period += sample->period; | |
275 | hists__inc_nr_events(&evsel->hists, PERF_RECORD_SAMPLE); | |
276 | return he; | |
277 | } | |
278 | ||
279 | static void print_sym_table(void) | |
280 | { | |
281 | char bf[160]; | |
282 | int printed = 0; | |
283 | const int win_width = winsize.ws_col - 1; | |
284 | ||
285 | puts(CONSOLE_CLEAR); | |
286 | ||
287 | perf_top__header_snprintf(&top, bf, sizeof(bf)); | |
288 | printf("%s\n", bf); | |
289 | ||
290 | perf_top__reset_sample_counters(&top); | |
291 | ||
292 | printf("%-*.*s\n", win_width, win_width, graph_dotted_line); | |
293 | ||
294 | if (top.sym_evsel->hists.stats.nr_lost_warned != | |
295 | top.sym_evsel->hists.stats.nr_events[PERF_RECORD_LOST]) { | |
296 | top.sym_evsel->hists.stats.nr_lost_warned = | |
297 | top.sym_evsel->hists.stats.nr_events[PERF_RECORD_LOST]; | |
298 | color_fprintf(stdout, PERF_COLOR_RED, | |
299 | "WARNING: LOST %d chunks, Check IO/CPU overload", | |
300 | top.sym_evsel->hists.stats.nr_lost_warned); | |
301 | ++printed; | |
302 | } | |
303 | ||
304 | if (top.sym_filter_entry) { | |
305 | show_details(top.sym_filter_entry); | |
306 | return; | |
307 | } | |
308 | ||
309 | hists__collapse_resort_threaded(&top.sym_evsel->hists); | |
310 | hists__output_resort_threaded(&top.sym_evsel->hists); | |
311 | hists__decay_entries_threaded(&top.sym_evsel->hists, | |
312 | top.hide_user_symbols, | |
313 | top.hide_kernel_symbols); | |
314 | hists__output_recalc_col_len(&top.sym_evsel->hists, winsize.ws_row - 3); | |
315 | putchar('\n'); | |
316 | hists__fprintf(&top.sym_evsel->hists, NULL, false, false, | |
317 | winsize.ws_row - 4 - printed, win_width, stdout); | |
318 | } | |
319 | ||
320 | static void prompt_integer(int *target, const char *msg) | |
321 | { | |
322 | char *buf = malloc(0), *p; | |
323 | size_t dummy = 0; | |
324 | int tmp; | |
325 | ||
326 | fprintf(stdout, "\n%s: ", msg); | |
327 | if (getline(&buf, &dummy, stdin) < 0) | |
328 | return; | |
329 | ||
330 | p = strchr(buf, '\n'); | |
331 | if (p) | |
332 | *p = 0; | |
333 | ||
334 | p = buf; | |
335 | while(*p) { | |
336 | if (!isdigit(*p)) | |
337 | goto out_free; | |
338 | p++; | |
339 | } | |
340 | tmp = strtoul(buf, NULL, 10); | |
341 | *target = tmp; | |
342 | out_free: | |
343 | free(buf); | |
344 | } | |
345 | ||
346 | static void prompt_percent(int *target, const char *msg) | |
347 | { | |
348 | int tmp = 0; | |
349 | ||
350 | prompt_integer(&tmp, msg); | |
351 | if (tmp >= 0 && tmp <= 100) | |
352 | *target = tmp; | |
353 | } | |
354 | ||
355 | static void prompt_symbol(struct hist_entry **target, const char *msg) | |
356 | { | |
357 | char *buf = malloc(0), *p; | |
358 | struct hist_entry *syme = *target, *n, *found = NULL; | |
359 | struct rb_node *next; | |
360 | size_t dummy = 0; | |
361 | ||
362 | /* zero counters of active symbol */ | |
363 | if (syme) { | |
364 | __zero_source_counters(syme); | |
365 | *target = NULL; | |
366 | } | |
367 | ||
368 | fprintf(stdout, "\n%s: ", msg); | |
369 | if (getline(&buf, &dummy, stdin) < 0) | |
370 | goto out_free; | |
371 | ||
372 | p = strchr(buf, '\n'); | |
373 | if (p) | |
374 | *p = 0; | |
375 | ||
376 | next = rb_first(&top.sym_evsel->hists.entries); | |
377 | while (next) { | |
378 | n = rb_entry(next, struct hist_entry, rb_node); | |
379 | if (n->ms.sym && !strcmp(buf, n->ms.sym->name)) { | |
380 | found = n; | |
381 | break; | |
382 | } | |
383 | next = rb_next(&n->rb_node); | |
384 | } | |
385 | ||
386 | if (!found) { | |
387 | fprintf(stderr, "Sorry, %s is not active.\n", buf); | |
388 | sleep(1); | |
389 | return; | |
390 | } else | |
391 | parse_source(found); | |
392 | ||
393 | out_free: | |
394 | free(buf); | |
395 | } | |
396 | ||
397 | static void print_mapped_keys(void) | |
398 | { | |
399 | char *name = NULL; | |
400 | ||
401 | if (top.sym_filter_entry) { | |
402 | struct symbol *sym = top.sym_filter_entry->ms.sym; | |
403 | name = sym->name; | |
404 | } | |
405 | ||
406 | fprintf(stdout, "\nMapped keys:\n"); | |
407 | fprintf(stdout, "\t[d] display refresh delay. \t(%d)\n", top.delay_secs); | |
408 | fprintf(stdout, "\t[e] display entries (lines). \t(%d)\n", top.print_entries); | |
409 | ||
410 | if (top.evlist->nr_entries > 1) | |
411 | fprintf(stdout, "\t[E] active event counter. \t(%s)\n", event_name(top.sym_evsel)); | |
412 | ||
413 | fprintf(stdout, "\t[f] profile display filter (count). \t(%d)\n", top.count_filter); | |
414 | ||
415 | fprintf(stdout, "\t[F] annotate display filter (percent). \t(%d%%)\n", sym_pcnt_filter); | |
416 | fprintf(stdout, "\t[s] annotate symbol. \t(%s)\n", name?: "NULL"); | |
417 | fprintf(stdout, "\t[S] stop annotation.\n"); | |
418 | ||
419 | fprintf(stdout, | |
420 | "\t[K] hide kernel_symbols symbols. \t(%s)\n", | |
421 | top.hide_kernel_symbols ? "yes" : "no"); | |
422 | fprintf(stdout, | |
423 | "\t[U] hide user symbols. \t(%s)\n", | |
424 | top.hide_user_symbols ? "yes" : "no"); | |
425 | fprintf(stdout, "\t[z] toggle sample zeroing. \t(%d)\n", top.zero ? 1 : 0); | |
426 | fprintf(stdout, "\t[qQ] quit.\n"); | |
427 | } | |
428 | ||
429 | static int key_mapped(int c) | |
430 | { | |
431 | switch (c) { | |
432 | case 'd': | |
433 | case 'e': | |
434 | case 'f': | |
435 | case 'z': | |
436 | case 'q': | |
437 | case 'Q': | |
438 | case 'K': | |
439 | case 'U': | |
440 | case 'F': | |
441 | case 's': | |
442 | case 'S': | |
443 | return 1; | |
444 | case 'E': | |
445 | return top.evlist->nr_entries > 1 ? 1 : 0; | |
446 | default: | |
447 | break; | |
448 | } | |
449 | ||
450 | return 0; | |
451 | } | |
452 | ||
453 | static void handle_keypress(int c) | |
454 | { | |
455 | if (!key_mapped(c)) { | |
456 | struct pollfd stdin_poll = { .fd = 0, .events = POLLIN }; | |
457 | struct termios tc, save; | |
458 | ||
459 | print_mapped_keys(); | |
460 | fprintf(stdout, "\nEnter selection, or unmapped key to continue: "); | |
461 | fflush(stdout); | |
462 | ||
463 | tcgetattr(0, &save); | |
464 | tc = save; | |
465 | tc.c_lflag &= ~(ICANON | ECHO); | |
466 | tc.c_cc[VMIN] = 0; | |
467 | tc.c_cc[VTIME] = 0; | |
468 | tcsetattr(0, TCSANOW, &tc); | |
469 | ||
470 | poll(&stdin_poll, 1, -1); | |
471 | c = getc(stdin); | |
472 | ||
473 | tcsetattr(0, TCSAFLUSH, &save); | |
474 | if (!key_mapped(c)) | |
475 | return; | |
476 | } | |
477 | ||
478 | switch (c) { | |
479 | case 'd': | |
480 | prompt_integer(&top.delay_secs, "Enter display delay"); | |
481 | if (top.delay_secs < 1) | |
482 | top.delay_secs = 1; | |
483 | break; | |
484 | case 'e': | |
485 | prompt_integer(&top.print_entries, "Enter display entries (lines)"); | |
486 | if (top.print_entries == 0) { | |
487 | sig_winch_handler(SIGWINCH); | |
488 | signal(SIGWINCH, sig_winch_handler); | |
489 | } else | |
490 | signal(SIGWINCH, SIG_DFL); | |
491 | break; | |
492 | case 'E': | |
493 | if (top.evlist->nr_entries > 1) { | |
494 | /* Select 0 as the default event: */ | |
495 | int counter = 0; | |
496 | ||
497 | fprintf(stderr, "\nAvailable events:"); | |
498 | ||
499 | list_for_each_entry(top.sym_evsel, &top.evlist->entries, node) | |
500 | fprintf(stderr, "\n\t%d %s", top.sym_evsel->idx, event_name(top.sym_evsel)); | |
501 | ||
502 | prompt_integer(&counter, "Enter details event counter"); | |
503 | ||
504 | if (counter >= top.evlist->nr_entries) { | |
505 | top.sym_evsel = list_entry(top.evlist->entries.next, struct perf_evsel, node); | |
506 | fprintf(stderr, "Sorry, no such event, using %s.\n", event_name(top.sym_evsel)); | |
507 | sleep(1); | |
508 | break; | |
509 | } | |
510 | list_for_each_entry(top.sym_evsel, &top.evlist->entries, node) | |
511 | if (top.sym_evsel->idx == counter) | |
512 | break; | |
513 | } else | |
514 | top.sym_evsel = list_entry(top.evlist->entries.next, struct perf_evsel, node); | |
515 | break; | |
516 | case 'f': | |
517 | prompt_integer(&top.count_filter, "Enter display event count filter"); | |
518 | break; | |
519 | case 'F': | |
520 | prompt_percent(&sym_pcnt_filter, "Enter details display event filter (percent)"); | |
521 | break; | |
522 | case 'K': | |
523 | top.hide_kernel_symbols = !top.hide_kernel_symbols; | |
524 | break; | |
525 | case 'q': | |
526 | case 'Q': | |
527 | printf("exiting.\n"); | |
528 | if (dump_symtab) | |
529 | perf_session__fprintf_dsos(top.session, stderr); | |
530 | exit(0); | |
531 | case 's': | |
532 | prompt_symbol(&top.sym_filter_entry, "Enter details symbol"); | |
533 | break; | |
534 | case 'S': | |
535 | if (!top.sym_filter_entry) | |
536 | break; | |
537 | else { | |
538 | struct hist_entry *syme = top.sym_filter_entry; | |
539 | ||
540 | top.sym_filter_entry = NULL; | |
541 | __zero_source_counters(syme); | |
542 | } | |
543 | break; | |
544 | case 'U': | |
545 | top.hide_user_symbols = !top.hide_user_symbols; | |
546 | break; | |
547 | case 'z': | |
548 | top.zero = !top.zero; | |
549 | break; | |
550 | default: | |
551 | break; | |
552 | } | |
553 | } | |
554 | ||
555 | static void perf_top__sort_new_samples(void *arg) | |
556 | { | |
557 | struct perf_top *t = arg; | |
558 | perf_top__reset_sample_counters(t); | |
559 | ||
560 | if (t->evlist->selected != NULL) | |
561 | t->sym_evsel = t->evlist->selected; | |
562 | ||
563 | hists__collapse_resort_threaded(&t->sym_evsel->hists); | |
564 | hists__output_resort_threaded(&t->sym_evsel->hists); | |
565 | hists__decay_entries_threaded(&t->sym_evsel->hists, | |
566 | top.hide_user_symbols, | |
567 | top.hide_kernel_symbols); | |
568 | } | |
569 | ||
570 | static void *display_thread_tui(void *arg __used) | |
571 | { | |
572 | const char *help = "For a higher level overview, try: perf top --sort comm,dso"; | |
573 | ||
574 | perf_top__sort_new_samples(&top); | |
575 | perf_evlist__tui_browse_hists(top.evlist, help, | |
576 | perf_top__sort_new_samples, | |
577 | &top, top.delay_secs); | |
578 | ||
579 | exit_browser(0); | |
580 | exit(0); | |
581 | return NULL; | |
582 | } | |
583 | ||
584 | static void *display_thread(void *arg __used) | |
585 | { | |
586 | struct pollfd stdin_poll = { .fd = 0, .events = POLLIN }; | |
587 | struct termios tc, save; | |
588 | int delay_msecs, c; | |
589 | ||
590 | tcgetattr(0, &save); | |
591 | tc = save; | |
592 | tc.c_lflag &= ~(ICANON | ECHO); | |
593 | tc.c_cc[VMIN] = 0; | |
594 | tc.c_cc[VTIME] = 0; | |
595 | ||
596 | pthread__unblock_sigwinch(); | |
597 | repeat: | |
598 | delay_msecs = top.delay_secs * 1000; | |
599 | tcsetattr(0, TCSANOW, &tc); | |
600 | /* trash return*/ | |
601 | getc(stdin); | |
602 | ||
603 | while (1) { | |
604 | print_sym_table(); | |
605 | /* | |
606 | * Either timeout expired or we got an EINTR due to SIGWINCH, | |
607 | * refresh screen in both cases. | |
608 | */ | |
609 | switch (poll(&stdin_poll, 1, delay_msecs)) { | |
610 | case 0: | |
611 | continue; | |
612 | case -1: | |
613 | if (errno == EINTR) | |
614 | continue; | |
615 | /* Fall trhu */ | |
616 | default: | |
617 | goto process_hotkey; | |
618 | } | |
619 | } | |
620 | process_hotkey: | |
621 | c = getc(stdin); | |
622 | tcsetattr(0, TCSAFLUSH, &save); | |
623 | ||
624 | handle_keypress(c); | |
625 | goto repeat; | |
626 | ||
627 | return NULL; | |
628 | } | |
629 | ||
630 | /* Tag samples to be skipped. */ | |
631 | static const char *skip_symbols[] = { | |
632 | "default_idle", | |
633 | "native_safe_halt", | |
634 | "cpu_idle", | |
635 | "enter_idle", | |
636 | "exit_idle", | |
637 | "mwait_idle", | |
638 | "mwait_idle_with_hints", | |
639 | "poll_idle", | |
640 | "ppc64_runlatch_off", | |
641 | "pseries_dedicated_idle_sleep", | |
642 | NULL | |
643 | }; | |
644 | ||
645 | static int symbol_filter(struct map *map __used, struct symbol *sym) | |
646 | { | |
647 | const char *name = sym->name; | |
648 | int i; | |
649 | ||
650 | /* | |
651 | * ppc64 uses function descriptors and appends a '.' to the | |
652 | * start of every instruction address. Remove it. | |
653 | */ | |
654 | if (name[0] == '.') | |
655 | name++; | |
656 | ||
657 | if (!strcmp(name, "_text") || | |
658 | !strcmp(name, "_etext") || | |
659 | !strcmp(name, "_sinittext") || | |
660 | !strncmp("init_module", name, 11) || | |
661 | !strncmp("cleanup_module", name, 14) || | |
662 | strstr(name, "_text_start") || | |
663 | strstr(name, "_text_end")) | |
664 | return 1; | |
665 | ||
666 | for (i = 0; skip_symbols[i]; i++) { | |
667 | if (!strcmp(skip_symbols[i], name)) { | |
668 | sym->ignore = true; | |
669 | break; | |
670 | } | |
671 | } | |
672 | ||
673 | return 0; | |
674 | } | |
675 | ||
676 | static void perf_event__process_sample(const union perf_event *event, | |
677 | struct perf_evsel *evsel, | |
678 | struct perf_sample *sample, | |
679 | struct perf_session *session) | |
680 | { | |
681 | struct symbol *parent = NULL; | |
682 | u64 ip = event->ip.ip; | |
683 | struct addr_location al; | |
684 | struct machine *machine; | |
685 | int err; | |
686 | u8 origin = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; | |
687 | ||
688 | ++top.samples; | |
689 | ||
690 | switch (origin) { | |
691 | case PERF_RECORD_MISC_USER: | |
692 | ++top.us_samples; | |
693 | if (top.hide_user_symbols) | |
694 | return; | |
695 | machine = perf_session__find_host_machine(session); | |
696 | break; | |
697 | case PERF_RECORD_MISC_KERNEL: | |
698 | ++top.kernel_samples; | |
699 | if (top.hide_kernel_symbols) | |
700 | return; | |
701 | machine = perf_session__find_host_machine(session); | |
702 | break; | |
703 | case PERF_RECORD_MISC_GUEST_KERNEL: | |
704 | ++top.guest_kernel_samples; | |
705 | machine = perf_session__find_machine(session, event->ip.pid); | |
706 | break; | |
707 | case PERF_RECORD_MISC_GUEST_USER: | |
708 | ++top.guest_us_samples; | |
709 | /* | |
710 | * TODO: we don't process guest user from host side | |
711 | * except simple counting. | |
712 | */ | |
713 | return; | |
714 | default: | |
715 | return; | |
716 | } | |
717 | ||
718 | if (!machine && perf_guest) { | |
719 | pr_err("Can't find guest [%d]'s kernel information\n", | |
720 | event->ip.pid); | |
721 | return; | |
722 | } | |
723 | ||
724 | if (event->header.misc & PERF_RECORD_MISC_EXACT_IP) | |
725 | top.exact_samples++; | |
726 | ||
727 | if (perf_event__preprocess_sample(event, session, &al, sample, | |
728 | symbol_filter) < 0 || | |
729 | al.filtered) | |
730 | return; | |
731 | ||
732 | if (!kptr_restrict_warned && | |
733 | symbol_conf.kptr_restrict && | |
734 | al.cpumode == PERF_RECORD_MISC_KERNEL) { | |
735 | ui__warning( | |
736 | "Kernel address maps (/proc/{kallsyms,modules}) are restricted.\n\n" | |
737 | "Check /proc/sys/kernel/kptr_restrict.\n\n" | |
738 | "Kernel%s samples will not be resolved.\n", | |
739 | !RB_EMPTY_ROOT(&al.map->dso->symbols[MAP__FUNCTION]) ? | |
740 | " modules" : ""); | |
741 | if (use_browser <= 0) | |
742 | sleep(5); | |
743 | kptr_restrict_warned = true; | |
744 | } | |
745 | ||
746 | if (al.sym == NULL) { | |
747 | const char *msg = "Kernel samples will not be resolved.\n"; | |
748 | /* | |
749 | * As we do lazy loading of symtabs we only will know if the | |
750 | * specified vmlinux file is invalid when we actually have a | |
751 | * hit in kernel space and then try to load it. So if we get | |
752 | * here and there are _no_ symbols in the DSO backing the | |
753 | * kernel map, bail out. | |
754 | * | |
755 | * We may never get here, for instance, if we use -K/ | |
756 | * --hide-kernel-symbols, even if the user specifies an | |
757 | * invalid --vmlinux ;-) | |
758 | */ | |
759 | if (!kptr_restrict_warned && !vmlinux_warned && | |
760 | al.map == machine->vmlinux_maps[MAP__FUNCTION] && | |
761 | RB_EMPTY_ROOT(&al.map->dso->symbols[MAP__FUNCTION])) { | |
762 | if (symbol_conf.vmlinux_name) { | |
763 | ui__warning("The %s file can't be used.\n%s", | |
764 | symbol_conf.vmlinux_name, msg); | |
765 | } else { | |
766 | ui__warning("A vmlinux file was not found.\n%s", | |
767 | msg); | |
768 | } | |
769 | ||
770 | if (use_browser <= 0) | |
771 | sleep(5); | |
772 | vmlinux_warned = true; | |
773 | } | |
774 | } | |
775 | ||
776 | if (al.sym == NULL || !al.sym->ignore) { | |
777 | struct hist_entry *he; | |
778 | ||
779 | if ((sort__has_parent || symbol_conf.use_callchain) && | |
780 | sample->callchain) { | |
781 | err = perf_session__resolve_callchain(session, al.thread, | |
782 | sample->callchain, &parent); | |
783 | if (err) | |
784 | return; | |
785 | } | |
786 | ||
787 | he = perf_session__add_hist_entry(session, &al, sample, evsel); | |
788 | if (he == NULL) { | |
789 | pr_err("Problem incrementing symbol period, skipping event\n"); | |
790 | return; | |
791 | } | |
792 | ||
793 | if (symbol_conf.use_callchain) { | |
794 | err = callchain_append(he->callchain, &session->callchain_cursor, | |
795 | sample->period); | |
796 | if (err) | |
797 | return; | |
798 | } | |
799 | ||
800 | if (sort_has_symbols) | |
801 | record_precise_ip(he, evsel->idx, ip); | |
802 | } | |
803 | ||
804 | return; | |
805 | } | |
806 | ||
807 | static void perf_session__mmap_read_idx(struct perf_session *self, int idx) | |
808 | { | |
809 | struct perf_sample sample; | |
810 | struct perf_evsel *evsel; | |
811 | union perf_event *event; | |
812 | int ret; | |
813 | ||
814 | while ((event = perf_evlist__mmap_read(top.evlist, idx)) != NULL) { | |
815 | ret = perf_session__parse_sample(self, event, &sample); | |
816 | if (ret) { | |
817 | pr_err("Can't parse sample, err = %d\n", ret); | |
818 | continue; | |
819 | } | |
820 | ||
821 | evsel = perf_evlist__id2evsel(self->evlist, sample.id); | |
822 | assert(evsel != NULL); | |
823 | ||
824 | if (event->header.type == PERF_RECORD_SAMPLE) | |
825 | perf_event__process_sample(event, evsel, &sample, self); | |
826 | else if (event->header.type < PERF_RECORD_MAX) { | |
827 | hists__inc_nr_events(&evsel->hists, event->header.type); | |
828 | perf_event__process(event, &sample, self); | |
829 | } else | |
830 | ++self->hists.stats.nr_unknown_events; | |
831 | } | |
832 | } | |
833 | ||
834 | static void perf_session__mmap_read(struct perf_session *self) | |
835 | { | |
836 | int i; | |
837 | ||
838 | for (i = 0; i < top.evlist->nr_mmaps; i++) | |
839 | perf_session__mmap_read_idx(self, i); | |
840 | } | |
841 | ||
842 | static void start_counters(struct perf_evlist *evlist) | |
843 | { | |
844 | struct perf_evsel *counter, *first; | |
845 | ||
846 | first = list_entry(evlist->entries.next, struct perf_evsel, node); | |
847 | ||
848 | list_for_each_entry(counter, &evlist->entries, node) { | |
849 | struct perf_event_attr *attr = &counter->attr; | |
850 | struct xyarray *group_fd = NULL; | |
851 | ||
852 | if (group && counter != first) | |
853 | group_fd = first->fd; | |
854 | ||
855 | attr->sample_type = PERF_SAMPLE_IP | PERF_SAMPLE_TID; | |
856 | ||
857 | if (top.freq) { | |
858 | attr->sample_type |= PERF_SAMPLE_PERIOD; | |
859 | attr->freq = 1; | |
860 | attr->sample_freq = top.freq; | |
861 | } | |
862 | ||
863 | if (evlist->nr_entries > 1) { | |
864 | attr->sample_type |= PERF_SAMPLE_ID; | |
865 | attr->read_format |= PERF_FORMAT_ID; | |
866 | } | |
867 | ||
868 | if (symbol_conf.use_callchain) | |
869 | attr->sample_type |= PERF_SAMPLE_CALLCHAIN; | |
870 | ||
871 | attr->mmap = 1; | |
872 | attr->comm = 1; | |
873 | attr->inherit = inherit; | |
874 | retry_sample_id: | |
875 | attr->sample_id_all = sample_id_all_avail ? 1 : 0; | |
876 | try_again: | |
877 | if (perf_evsel__open(counter, top.evlist->cpus, | |
878 | top.evlist->threads, group, | |
879 | group_fd) < 0) { | |
880 | int err = errno; | |
881 | ||
882 | if (err == EPERM || err == EACCES) { | |
883 | ui__error_paranoid(); | |
884 | goto out_err; | |
885 | } else if (err == EINVAL && sample_id_all_avail) { | |
886 | /* | |
887 | * Old kernel, no attr->sample_id_type_all field | |
888 | */ | |
889 | sample_id_all_avail = false; | |
890 | goto retry_sample_id; | |
891 | } | |
892 | /* | |
893 | * If it's cycles then fall back to hrtimer | |
894 | * based cpu-clock-tick sw counter, which | |
895 | * is always available even if no PMU support: | |
896 | */ | |
897 | if (attr->type == PERF_TYPE_HARDWARE && | |
898 | attr->config == PERF_COUNT_HW_CPU_CYCLES) { | |
899 | if (verbose) | |
900 | ui__warning("Cycles event not supported,\n" | |
901 | "trying to fall back to cpu-clock-ticks\n"); | |
902 | ||
903 | attr->type = PERF_TYPE_SOFTWARE; | |
904 | attr->config = PERF_COUNT_SW_CPU_CLOCK; | |
905 | goto try_again; | |
906 | } | |
907 | ||
908 | if (err == ENOENT) { | |
909 | ui__warning("The %s event is not supported.\n", | |
910 | event_name(counter)); | |
911 | goto out_err; | |
912 | } | |
913 | ||
914 | ui__warning("The sys_perf_event_open() syscall " | |
915 | "returned with %d (%s). /bin/dmesg " | |
916 | "may provide additional information.\n" | |
917 | "No CONFIG_PERF_EVENTS=y kernel support " | |
918 | "configured?\n", err, strerror(err)); | |
919 | goto out_err; | |
920 | } | |
921 | } | |
922 | ||
923 | if (perf_evlist__mmap(evlist, mmap_pages, false) < 0) { | |
924 | ui__warning("Failed to mmap with %d (%s)\n", | |
925 | errno, strerror(errno)); | |
926 | goto out_err; | |
927 | } | |
928 | ||
929 | return; | |
930 | ||
931 | out_err: | |
932 | exit_browser(0); | |
933 | exit(0); | |
934 | } | |
935 | ||
936 | static int setup_sample_type(void) | |
937 | { | |
938 | if (!sort_has_symbols) { | |
939 | if (symbol_conf.use_callchain) { | |
940 | ui__warning("Selected -g but \"sym\" not present in --sort/-s."); | |
941 | return -EINVAL; | |
942 | } | |
943 | } else if (!dont_use_callchains && callchain_param.mode != CHAIN_NONE) { | |
944 | if (callchain_register_param(&callchain_param) < 0) { | |
945 | ui__warning("Can't register callchain params.\n"); | |
946 | return -EINVAL; | |
947 | } | |
948 | } | |
949 | ||
950 | return 0; | |
951 | } | |
952 | ||
953 | static int __cmd_top(void) | |
954 | { | |
955 | pthread_t thread; | |
956 | int ret; | |
957 | /* | |
958 | * FIXME: perf_session__new should allow passing a O_MMAP, so that all this | |
959 | * mmap reading, etc is encapsulated in it. Use O_WRONLY for now. | |
960 | */ | |
961 | top.session = perf_session__new(NULL, O_WRONLY, false, false, NULL); | |
962 | if (top.session == NULL) | |
963 | return -ENOMEM; | |
964 | ||
965 | ret = setup_sample_type(); | |
966 | if (ret) | |
967 | goto out_delete; | |
968 | ||
969 | if (top.target_tid != -1) | |
970 | perf_event__synthesize_thread_map(top.evlist->threads, | |
971 | perf_event__process, top.session); | |
972 | else | |
973 | perf_event__synthesize_threads(perf_event__process, top.session); | |
974 | ||
975 | start_counters(top.evlist); | |
976 | top.session->evlist = top.evlist; | |
977 | perf_session__update_sample_type(top.session); | |
978 | ||
979 | /* Wait for a minimal set of events before starting the snapshot */ | |
980 | poll(top.evlist->pollfd, top.evlist->nr_fds, 100); | |
981 | ||
982 | perf_session__mmap_read(top.session); | |
983 | ||
984 | if (pthread_create(&thread, NULL, (use_browser > 0 ? display_thread_tui : | |
985 | display_thread), NULL)) { | |
986 | printf("Could not create display thread.\n"); | |
987 | exit(-1); | |
988 | } | |
989 | ||
990 | if (realtime_prio) { | |
991 | struct sched_param param; | |
992 | ||
993 | param.sched_priority = realtime_prio; | |
994 | if (sched_setscheduler(0, SCHED_FIFO, ¶m)) { | |
995 | printf("Could not set realtime priority.\n"); | |
996 | exit(-1); | |
997 | } | |
998 | } | |
999 | ||
1000 | while (1) { | |
1001 | u64 hits = top.samples; | |
1002 | ||
1003 | perf_session__mmap_read(top.session); | |
1004 | ||
1005 | if (hits == top.samples) | |
1006 | ret = poll(top.evlist->pollfd, top.evlist->nr_fds, 100); | |
1007 | } | |
1008 | ||
1009 | out_delete: | |
1010 | perf_session__delete(top.session); | |
1011 | top.session = NULL; | |
1012 | ||
1013 | return 0; | |
1014 | } | |
1015 | ||
1016 | static int | |
1017 | parse_callchain_opt(const struct option *opt __used, const char *arg, | |
1018 | int unset) | |
1019 | { | |
1020 | char *tok, *tok2; | |
1021 | char *endptr; | |
1022 | ||
1023 | /* | |
1024 | * --no-call-graph | |
1025 | */ | |
1026 | if (unset) { | |
1027 | dont_use_callchains = true; | |
1028 | return 0; | |
1029 | } | |
1030 | ||
1031 | symbol_conf.use_callchain = true; | |
1032 | ||
1033 | if (!arg) | |
1034 | return 0; | |
1035 | ||
1036 | tok = strtok((char *)arg, ","); | |
1037 | if (!tok) | |
1038 | return -1; | |
1039 | ||
1040 | /* get the output mode */ | |
1041 | if (!strncmp(tok, "graph", strlen(arg))) | |
1042 | callchain_param.mode = CHAIN_GRAPH_ABS; | |
1043 | ||
1044 | else if (!strncmp(tok, "flat", strlen(arg))) | |
1045 | callchain_param.mode = CHAIN_FLAT; | |
1046 | ||
1047 | else if (!strncmp(tok, "fractal", strlen(arg))) | |
1048 | callchain_param.mode = CHAIN_GRAPH_REL; | |
1049 | ||
1050 | else if (!strncmp(tok, "none", strlen(arg))) { | |
1051 | callchain_param.mode = CHAIN_NONE; | |
1052 | symbol_conf.use_callchain = false; | |
1053 | ||
1054 | return 0; | |
1055 | } | |
1056 | ||
1057 | else | |
1058 | return -1; | |
1059 | ||
1060 | /* get the min percentage */ | |
1061 | tok = strtok(NULL, ","); | |
1062 | if (!tok) | |
1063 | goto setup; | |
1064 | ||
1065 | callchain_param.min_percent = strtod(tok, &endptr); | |
1066 | if (tok == endptr) | |
1067 | return -1; | |
1068 | ||
1069 | /* get the print limit */ | |
1070 | tok2 = strtok(NULL, ","); | |
1071 | if (!tok2) | |
1072 | goto setup; | |
1073 | ||
1074 | if (tok2[0] != 'c') { | |
1075 | callchain_param.print_limit = strtod(tok2, &endptr); | |
1076 | tok2 = strtok(NULL, ","); | |
1077 | if (!tok2) | |
1078 | goto setup; | |
1079 | } | |
1080 | ||
1081 | /* get the call chain order */ | |
1082 | if (!strcmp(tok2, "caller")) | |
1083 | callchain_param.order = ORDER_CALLER; | |
1084 | else if (!strcmp(tok2, "callee")) | |
1085 | callchain_param.order = ORDER_CALLEE; | |
1086 | else | |
1087 | return -1; | |
1088 | setup: | |
1089 | if (callchain_register_param(&callchain_param) < 0) { | |
1090 | fprintf(stderr, "Can't register callchain params\n"); | |
1091 | return -1; | |
1092 | } | |
1093 | return 0; | |
1094 | } | |
1095 | ||
1096 | static const char * const top_usage[] = { | |
1097 | "perf top [<options>]", | |
1098 | NULL | |
1099 | }; | |
1100 | ||
1101 | static const struct option options[] = { | |
1102 | OPT_CALLBACK('e', "event", &top.evlist, "event", | |
1103 | "event selector. use 'perf list' to list available events", | |
1104 | parse_events_option), | |
1105 | OPT_INTEGER('c', "count", &default_interval, | |
1106 | "event period to sample"), | |
1107 | OPT_INTEGER('p', "pid", &top.target_pid, | |
1108 | "profile events on existing process id"), | |
1109 | OPT_INTEGER('t', "tid", &top.target_tid, | |
1110 | "profile events on existing thread id"), | |
1111 | OPT_BOOLEAN('a', "all-cpus", &system_wide, | |
1112 | "system-wide collection from all CPUs"), | |
1113 | OPT_STRING('C', "cpu", &top.cpu_list, "cpu", | |
1114 | "list of cpus to monitor"), | |
1115 | OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name, | |
1116 | "file", "vmlinux pathname"), | |
1117 | OPT_BOOLEAN('K', "hide_kernel_symbols", &top.hide_kernel_symbols, | |
1118 | "hide kernel symbols"), | |
1119 | OPT_UINTEGER('m', "mmap-pages", &mmap_pages, "number of mmap data pages"), | |
1120 | OPT_INTEGER('r', "realtime", &realtime_prio, | |
1121 | "collect data with this RT SCHED_FIFO priority"), | |
1122 | OPT_INTEGER('d', "delay", &top.delay_secs, | |
1123 | "number of seconds to delay between refreshes"), | |
1124 | OPT_BOOLEAN('D', "dump-symtab", &dump_symtab, | |
1125 | "dump the symbol table used for profiling"), | |
1126 | OPT_INTEGER('f', "count-filter", &top.count_filter, | |
1127 | "only display functions with more events than this"), | |
1128 | OPT_BOOLEAN('g', "group", &group, | |
1129 | "put the counters into a counter group"), | |
1130 | OPT_BOOLEAN('i', "inherit", &inherit, | |
1131 | "child tasks inherit counters"), | |
1132 | OPT_STRING(0, "sym-annotate", &sym_filter, "symbol name", | |
1133 | "symbol to annotate"), | |
1134 | OPT_BOOLEAN('z', "zero", &top.zero, | |
1135 | "zero history across updates"), | |
1136 | OPT_INTEGER('F', "freq", &top.freq, | |
1137 | "profile at this frequency"), | |
1138 | OPT_INTEGER('E', "entries", &top.print_entries, | |
1139 | "display this many functions"), | |
1140 | OPT_BOOLEAN('U', "hide_user_symbols", &top.hide_user_symbols, | |
1141 | "hide user symbols"), | |
1142 | OPT_BOOLEAN(0, "tui", &use_tui, "Use the TUI interface"), | |
1143 | OPT_BOOLEAN(0, "stdio", &use_stdio, "Use the stdio interface"), | |
1144 | OPT_INCR('v', "verbose", &verbose, | |
1145 | "be more verbose (show counter open errors, etc)"), | |
1146 | OPT_STRING('s', "sort", &sort_order, "key[,key2...]", | |
1147 | "sort by key(s): pid, comm, dso, symbol, parent"), | |
1148 | OPT_BOOLEAN('n', "show-nr-samples", &symbol_conf.show_nr_samples, | |
1149 | "Show a column with the number of samples"), | |
1150 | OPT_CALLBACK_DEFAULT('G', "call-graph", NULL, "output_type,min_percent, call_order", | |
1151 | "Display callchains using output_type (graph, flat, fractal, or none), min percent threshold and callchain order. " | |
1152 | "Default: fractal,0.5,callee", &parse_callchain_opt, | |
1153 | callchain_default_opt), | |
1154 | OPT_BOOLEAN(0, "show-total-period", &symbol_conf.show_total_period, | |
1155 | "Show a column with the sum of periods"), | |
1156 | OPT_STRING(0, "dsos", &symbol_conf.dso_list_str, "dso[,dso...]", | |
1157 | "only consider symbols in these dsos"), | |
1158 | OPT_STRING(0, "comms", &symbol_conf.comm_list_str, "comm[,comm...]", | |
1159 | "only consider symbols in these comms"), | |
1160 | OPT_STRING(0, "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]", | |
1161 | "only consider these symbols"), | |
1162 | OPT_BOOLEAN(0, "source", &symbol_conf.annotate_src, | |
1163 | "Interleave source code with assembly code (default)"), | |
1164 | OPT_BOOLEAN(0, "asm-raw", &symbol_conf.annotate_asm_raw, | |
1165 | "Display raw encoding of assembly instructions (default)"), | |
1166 | OPT_STRING('M', "disassembler-style", &disassembler_style, "disassembler style", | |
1167 | "Specify disassembler style (e.g. -M intel for intel syntax)"), | |
1168 | OPT_END() | |
1169 | }; | |
1170 | ||
1171 | int cmd_top(int argc, const char **argv, const char *prefix __used) | |
1172 | { | |
1173 | struct perf_evsel *pos; | |
1174 | int status = -ENOMEM; | |
1175 | ||
1176 | top.evlist = perf_evlist__new(NULL, NULL); | |
1177 | if (top.evlist == NULL) | |
1178 | return -ENOMEM; | |
1179 | ||
1180 | symbol_conf.exclude_other = false; | |
1181 | ||
1182 | argc = parse_options(argc, argv, options, top_usage, 0); | |
1183 | if (argc) | |
1184 | usage_with_options(top_usage, options); | |
1185 | ||
1186 | if (sort_order == default_sort_order) | |
1187 | sort_order = "dso,symbol"; | |
1188 | ||
1189 | setup_sorting(top_usage, options); | |
1190 | ||
1191 | if (use_stdio) | |
1192 | use_browser = 0; | |
1193 | else if (use_tui) | |
1194 | use_browser = 1; | |
1195 | ||
1196 | setup_browser(false); | |
1197 | ||
1198 | /* CPU and PID are mutually exclusive */ | |
1199 | if (top.target_tid > 0 && top.cpu_list) { | |
1200 | printf("WARNING: PID switch overriding CPU\n"); | |
1201 | sleep(1); | |
1202 | top.cpu_list = NULL; | |
1203 | } | |
1204 | ||
1205 | if (top.target_pid != -1) | |
1206 | top.target_tid = top.target_pid; | |
1207 | ||
1208 | if (perf_evlist__create_maps(top.evlist, top.target_pid, | |
1209 | top.target_tid, top.cpu_list) < 0) | |
1210 | usage_with_options(top_usage, options); | |
1211 | ||
1212 | if (!top.evlist->nr_entries && | |
1213 | perf_evlist__add_default(top.evlist) < 0) { | |
1214 | pr_err("Not enough memory for event selector list\n"); | |
1215 | return -ENOMEM; | |
1216 | } | |
1217 | ||
1218 | if (top.delay_secs < 1) | |
1219 | top.delay_secs = 1; | |
1220 | ||
1221 | /* | |
1222 | * User specified count overrides default frequency. | |
1223 | */ | |
1224 | if (default_interval) | |
1225 | top.freq = 0; | |
1226 | else if (top.freq) { | |
1227 | default_interval = top.freq; | |
1228 | } else { | |
1229 | fprintf(stderr, "frequency and count are zero, aborting\n"); | |
1230 | exit(EXIT_FAILURE); | |
1231 | } | |
1232 | ||
1233 | list_for_each_entry(pos, &top.evlist->entries, node) { | |
1234 | if (perf_evsel__alloc_fd(pos, top.evlist->cpus->nr, | |
1235 | top.evlist->threads->nr) < 0) | |
1236 | goto out_free_fd; | |
1237 | /* | |
1238 | * Fill in the ones not specifically initialized via -c: | |
1239 | */ | |
1240 | if (pos->attr.sample_period) | |
1241 | continue; | |
1242 | ||
1243 | pos->attr.sample_period = default_interval; | |
1244 | } | |
1245 | ||
1246 | if (perf_evlist__alloc_pollfd(top.evlist) < 0 || | |
1247 | perf_evlist__alloc_mmap(top.evlist) < 0) | |
1248 | goto out_free_fd; | |
1249 | ||
1250 | top.sym_evsel = list_entry(top.evlist->entries.next, struct perf_evsel, node); | |
1251 | ||
1252 | symbol_conf.priv_size = sizeof(struct annotation); | |
1253 | ||
1254 | symbol_conf.try_vmlinux_path = (symbol_conf.vmlinux_name == NULL); | |
1255 | if (symbol__init() < 0) | |
1256 | return -1; | |
1257 | ||
1258 | sort_entry__setup_elide(&sort_dso, symbol_conf.dso_list, "dso", stdout); | |
1259 | sort_entry__setup_elide(&sort_comm, symbol_conf.comm_list, "comm", stdout); | |
1260 | sort_entry__setup_elide(&sort_sym, symbol_conf.sym_list, "symbol", stdout); | |
1261 | ||
1262 | /* | |
1263 | * Avoid annotation data structures overhead when symbols aren't on the | |
1264 | * sort list. | |
1265 | */ | |
1266 | sort_has_symbols = sort_sym.list.next != NULL; | |
1267 | ||
1268 | get_term_dimensions(&winsize); | |
1269 | if (top.print_entries == 0) { | |
1270 | update_print_entries(&winsize); | |
1271 | signal(SIGWINCH, sig_winch_handler); | |
1272 | } | |
1273 | ||
1274 | status = __cmd_top(); | |
1275 | out_free_fd: | |
1276 | perf_evlist__delete(top.evlist); | |
1277 | ||
1278 | return status; | |
1279 | } |