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Commit | Line | Data |
---|---|---|
07800601 | 1 | /* |
bf9e1876 IM |
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 | * | |
9 | * Improvements and fixes by: | |
10 | * | |
11 | * Arjan van de Ven <arjan@linux.intel.com> | |
12 | * Yanmin Zhang <yanmin.zhang@intel.com> | |
13 | * Wu Fengguang <fengguang.wu@intel.com> | |
14 | * Mike Galbraith <efault@gmx.de> | |
15 | * Paul Mackerras <paulus@samba.org> | |
16 | * | |
17 | * Released under the GPL v2. (and only v2, not any later version) | |
07800601 | 18 | */ |
bf9e1876 | 19 | #include "builtin.h" |
07800601 | 20 | |
1a482f38 | 21 | #include "perf.h" |
bf9e1876 | 22 | |
8fc0321f | 23 | #include "util/color.h" |
b3165f41 ACM |
24 | #include "util/session.h" |
25 | #include "util/symbol.h" | |
439d473b | 26 | #include "util/thread.h" |
148be2c1 | 27 | #include "util/util.h" |
43cbcd8a | 28 | #include <linux/rbtree.h> |
b456bae0 IM |
29 | #include "util/parse-options.h" |
30 | #include "util/parse-events.h" | |
07800601 | 31 | |
8f28827a FW |
32 | #include "util/debug.h" |
33 | ||
07800601 IM |
34 | #include <assert.h> |
35 | #include <fcntl.h> | |
0e9b20b8 | 36 | |
07800601 | 37 | #include <stdio.h> |
923c42c1 MG |
38 | #include <termios.h> |
39 | #include <unistd.h> | |
0e9b20b8 | 40 | |
07800601 | 41 | #include <errno.h> |
07800601 IM |
42 | #include <time.h> |
43 | #include <sched.h> | |
44 | #include <pthread.h> | |
45 | ||
46 | #include <sys/syscall.h> | |
47 | #include <sys/ioctl.h> | |
48 | #include <sys/poll.h> | |
49 | #include <sys/prctl.h> | |
50 | #include <sys/wait.h> | |
51 | #include <sys/uio.h> | |
52 | #include <sys/mman.h> | |
53 | ||
54 | #include <linux/unistd.h> | |
55 | #include <linux/types.h> | |
56 | ||
a21ca2ca | 57 | static int fd[MAX_NR_CPUS][MAX_COUNTERS]; |
07800601 | 58 | |
42e59d7d | 59 | static int system_wide = 0; |
07800601 | 60 | |
7e4ff9e3 | 61 | static int default_interval = 0; |
07800601 | 62 | |
42e59d7d | 63 | static int count_filter = 5; |
3b6ed988 | 64 | static int print_entries; |
07800601 | 65 | |
42e59d7d IM |
66 | static int target_pid = -1; |
67 | static int inherit = 0; | |
68 | static int profile_cpu = -1; | |
69 | static int nr_cpus = 0; | |
70 | static unsigned int realtime_prio = 0; | |
71 | static int group = 0; | |
07800601 | 72 | static unsigned int page_size; |
42e59d7d IM |
73 | static unsigned int mmap_pages = 16; |
74 | static int freq = 1000; /* 1 KHz */ | |
07800601 | 75 | |
42e59d7d IM |
76 | static int delay_secs = 2; |
77 | static int zero = 0; | |
78 | static int dump_symtab = 0; | |
07800601 | 79 | |
8ffcda17 ACM |
80 | static bool hide_kernel_symbols = false; |
81 | static bool hide_user_symbols = false; | |
13cc5079 | 82 | static struct winsize winsize; |
8ffcda17 | 83 | |
923c42c1 MG |
84 | /* |
85 | * Source | |
86 | */ | |
87 | ||
88 | struct source_line { | |
89 | u64 eip; | |
90 | unsigned long count[MAX_COUNTERS]; | |
91 | char *line; | |
92 | struct source_line *next; | |
93 | }; | |
94 | ||
42e59d7d IM |
95 | static char *sym_filter = NULL; |
96 | struct sym_entry *sym_filter_entry = NULL; | |
6cff0e8d | 97 | struct sym_entry *sym_filter_entry_sched = NULL; |
42e59d7d IM |
98 | static int sym_pcnt_filter = 5; |
99 | static int sym_counter = 0; | |
100 | static int display_weighted = -1; | |
923c42c1 | 101 | |
07800601 IM |
102 | /* |
103 | * Symbols | |
104 | */ | |
105 | ||
b269876c ACM |
106 | struct sym_entry_source { |
107 | struct source_line *source; | |
108 | struct source_line *lines; | |
109 | struct source_line **lines_tail; | |
110 | pthread_mutex_t lock; | |
111 | }; | |
112 | ||
07800601 | 113 | struct sym_entry { |
de04687f ACM |
114 | struct rb_node rb_node; |
115 | struct list_head node; | |
c44613a4 ACM |
116 | unsigned long snap_count; |
117 | double weight; | |
07800601 | 118 | int skip; |
13cc5079 | 119 | u16 name_len; |
8ffcda17 | 120 | u8 origin; |
439d473b | 121 | struct map *map; |
b269876c | 122 | struct sym_entry_source *src; |
5a8e5a30 | 123 | unsigned long count[0]; |
07800601 IM |
124 | }; |
125 | ||
923c42c1 MG |
126 | /* |
127 | * Source functions | |
128 | */ | |
129 | ||
51a472de ACM |
130 | static inline struct symbol *sym_entry__symbol(struct sym_entry *self) |
131 | { | |
b32d133a | 132 | return ((void *)self) + symbol_conf.priv_size; |
51a472de ACM |
133 | } |
134 | ||
13cc5079 | 135 | static void get_term_dimensions(struct winsize *ws) |
3b6ed988 | 136 | { |
13cc5079 ACM |
137 | char *s = getenv("LINES"); |
138 | ||
139 | if (s != NULL) { | |
140 | ws->ws_row = atoi(s); | |
141 | s = getenv("COLUMNS"); | |
142 | if (s != NULL) { | |
143 | ws->ws_col = atoi(s); | |
144 | if (ws->ws_row && ws->ws_col) | |
145 | return; | |
146 | } | |
3b6ed988 | 147 | } |
13cc5079 ACM |
148 | #ifdef TIOCGWINSZ |
149 | if (ioctl(1, TIOCGWINSZ, ws) == 0 && | |
150 | ws->ws_row && ws->ws_col) | |
151 | return; | |
3b6ed988 | 152 | #endif |
13cc5079 ACM |
153 | ws->ws_row = 25; |
154 | ws->ws_col = 80; | |
3b6ed988 ACM |
155 | } |
156 | ||
13cc5079 | 157 | static void update_print_entries(struct winsize *ws) |
3b6ed988 | 158 | { |
13cc5079 ACM |
159 | print_entries = ws->ws_row; |
160 | ||
3b6ed988 ACM |
161 | if (print_entries > 9) |
162 | print_entries -= 9; | |
163 | } | |
164 | ||
165 | static void sig_winch_handler(int sig __used) | |
166 | { | |
13cc5079 ACM |
167 | get_term_dimensions(&winsize); |
168 | update_print_entries(&winsize); | |
3b6ed988 ACM |
169 | } |
170 | ||
923c42c1 MG |
171 | static void parse_source(struct sym_entry *syme) |
172 | { | |
173 | struct symbol *sym; | |
b269876c | 174 | struct sym_entry_source *source; |
439d473b | 175 | struct map *map; |
923c42c1 | 176 | FILE *file; |
83a0944f | 177 | char command[PATH_MAX*2]; |
439d473b ACM |
178 | const char *path; |
179 | u64 len; | |
923c42c1 MG |
180 | |
181 | if (!syme) | |
182 | return; | |
183 | ||
b269876c | 184 | if (syme->src == NULL) { |
36479484 | 185 | syme->src = zalloc(sizeof(*source)); |
b269876c ACM |
186 | if (syme->src == NULL) |
187 | return; | |
188 | pthread_mutex_init(&syme->src->lock, NULL); | |
189 | } | |
190 | ||
191 | source = syme->src; | |
192 | ||
193 | if (source->lines) { | |
194 | pthread_mutex_lock(&source->lock); | |
923c42c1 MG |
195 | goto out_assign; |
196 | } | |
197 | ||
51a472de | 198 | sym = sym_entry__symbol(syme); |
439d473b ACM |
199 | map = syme->map; |
200 | path = map->dso->long_name; | |
923c42c1 | 201 | |
923c42c1 MG |
202 | len = sym->end - sym->start; |
203 | ||
439d473b | 204 | sprintf(command, |
5f485364 ACM |
205 | "objdump --start-address=%#0*Lx --stop-address=%#0*Lx -dS %s", |
206 | BITS_PER_LONG / 4, map__rip_2objdump(map, sym->start), | |
207 | BITS_PER_LONG / 4, map__rip_2objdump(map, sym->end), path); | |
923c42c1 MG |
208 | |
209 | file = popen(command, "r"); | |
210 | if (!file) | |
211 | return; | |
212 | ||
b269876c ACM |
213 | pthread_mutex_lock(&source->lock); |
214 | source->lines_tail = &source->lines; | |
923c42c1 MG |
215 | while (!feof(file)) { |
216 | struct source_line *src; | |
217 | size_t dummy = 0; | |
ee11b90b | 218 | char *c, *sep; |
923c42c1 MG |
219 | |
220 | src = malloc(sizeof(struct source_line)); | |
221 | assert(src != NULL); | |
222 | memset(src, 0, sizeof(struct source_line)); | |
223 | ||
224 | if (getline(&src->line, &dummy, file) < 0) | |
225 | break; | |
226 | if (!src->line) | |
227 | break; | |
228 | ||
229 | c = strchr(src->line, '\n'); | |
230 | if (c) | |
231 | *c = 0; | |
232 | ||
233 | src->next = NULL; | |
b269876c ACM |
234 | *source->lines_tail = src; |
235 | source->lines_tail = &src->next; | |
923c42c1 | 236 | |
ee11b90b KS |
237 | src->eip = strtoull(src->line, &sep, 16); |
238 | if (*sep == ':') | |
239 | src->eip = map__objdump_2ip(map, src->eip); | |
240 | else /* this line has no ip info (e.g. source line) */ | |
241 | src->eip = 0; | |
923c42c1 MG |
242 | } |
243 | pclose(file); | |
244 | out_assign: | |
245 | sym_filter_entry = syme; | |
b269876c | 246 | pthread_mutex_unlock(&source->lock); |
923c42c1 MG |
247 | } |
248 | ||
249 | static void __zero_source_counters(struct sym_entry *syme) | |
250 | { | |
251 | int i; | |
252 | struct source_line *line; | |
253 | ||
b269876c | 254 | line = syme->src->lines; |
923c42c1 MG |
255 | while (line) { |
256 | for (i = 0; i < nr_counters; i++) | |
257 | line->count[i] = 0; | |
258 | line = line->next; | |
259 | } | |
260 | } | |
261 | ||
262 | static void record_precise_ip(struct sym_entry *syme, int counter, u64 ip) | |
263 | { | |
264 | struct source_line *line; | |
265 | ||
266 | if (syme != sym_filter_entry) | |
267 | return; | |
268 | ||
b269876c | 269 | if (pthread_mutex_trylock(&syme->src->lock)) |
923c42c1 MG |
270 | return; |
271 | ||
b269876c | 272 | if (syme->src == NULL || syme->src->source == NULL) |
923c42c1 MG |
273 | goto out_unlock; |
274 | ||
b269876c | 275 | for (line = syme->src->lines; line; line = line->next) { |
ee11b90b KS |
276 | /* skip lines without IP info */ |
277 | if (line->eip == 0) | |
278 | continue; | |
923c42c1 MG |
279 | if (line->eip == ip) { |
280 | line->count[counter]++; | |
281 | break; | |
282 | } | |
283 | if (line->eip > ip) | |
284 | break; | |
285 | } | |
286 | out_unlock: | |
b269876c | 287 | pthread_mutex_unlock(&syme->src->lock); |
923c42c1 MG |
288 | } |
289 | ||
c7ad21af ACM |
290 | #define PATTERN_LEN (BITS_PER_LONG / 4 + 2) |
291 | ||
923c42c1 MG |
292 | static void lookup_sym_source(struct sym_entry *syme) |
293 | { | |
51a472de | 294 | struct symbol *symbol = sym_entry__symbol(syme); |
923c42c1 | 295 | struct source_line *line; |
c7ad21af | 296 | char pattern[PATTERN_LEN + 1]; |
923c42c1 | 297 | |
5f485364 ACM |
298 | sprintf(pattern, "%0*Lx <", BITS_PER_LONG / 4, |
299 | map__rip_2objdump(syme->map, symbol->start)); | |
923c42c1 | 300 | |
b269876c ACM |
301 | pthread_mutex_lock(&syme->src->lock); |
302 | for (line = syme->src->lines; line; line = line->next) { | |
c7ad21af | 303 | if (memcmp(line->line, pattern, PATTERN_LEN) == 0) { |
b269876c | 304 | syme->src->source = line; |
923c42c1 MG |
305 | break; |
306 | } | |
307 | } | |
b269876c | 308 | pthread_mutex_unlock(&syme->src->lock); |
923c42c1 MG |
309 | } |
310 | ||
311 | static void show_lines(struct source_line *queue, int count, int total) | |
312 | { | |
313 | int i; | |
314 | struct source_line *line; | |
315 | ||
316 | line = queue; | |
317 | for (i = 0; i < count; i++) { | |
318 | float pcnt = 100.0*(float)line->count[sym_counter]/(float)total; | |
319 | ||
320 | printf("%8li %4.1f%%\t%s\n", line->count[sym_counter], pcnt, line->line); | |
321 | line = line->next; | |
322 | } | |
323 | } | |
324 | ||
325 | #define TRACE_COUNT 3 | |
326 | ||
327 | static void show_details(struct sym_entry *syme) | |
328 | { | |
329 | struct symbol *symbol; | |
330 | struct source_line *line; | |
331 | struct source_line *line_queue = NULL; | |
332 | int displayed = 0; | |
333 | int line_queue_count = 0, total = 0, more = 0; | |
334 | ||
335 | if (!syme) | |
336 | return; | |
337 | ||
b269876c | 338 | if (!syme->src->source) |
923c42c1 MG |
339 | lookup_sym_source(syme); |
340 | ||
b269876c | 341 | if (!syme->src->source) |
923c42c1 MG |
342 | return; |
343 | ||
51a472de | 344 | symbol = sym_entry__symbol(syme); |
923c42c1 MG |
345 | printf("Showing %s for %s\n", event_name(sym_counter), symbol->name); |
346 | printf(" Events Pcnt (>=%d%%)\n", sym_pcnt_filter); | |
347 | ||
b269876c ACM |
348 | pthread_mutex_lock(&syme->src->lock); |
349 | line = syme->src->source; | |
923c42c1 MG |
350 | while (line) { |
351 | total += line->count[sym_counter]; | |
352 | line = line->next; | |
353 | } | |
354 | ||
b269876c | 355 | line = syme->src->source; |
923c42c1 MG |
356 | while (line) { |
357 | float pcnt = 0.0; | |
358 | ||
359 | if (!line_queue_count) | |
360 | line_queue = line; | |
361 | line_queue_count++; | |
362 | ||
363 | if (line->count[sym_counter]) | |
364 | pcnt = 100.0 * line->count[sym_counter] / (float)total; | |
365 | if (pcnt >= (float)sym_pcnt_filter) { | |
366 | if (displayed <= print_entries) | |
367 | show_lines(line_queue, line_queue_count, total); | |
368 | else more++; | |
369 | displayed += line_queue_count; | |
370 | line_queue_count = 0; | |
371 | line_queue = NULL; | |
372 | } else if (line_queue_count > TRACE_COUNT) { | |
373 | line_queue = line_queue->next; | |
374 | line_queue_count--; | |
375 | } | |
376 | ||
377 | line->count[sym_counter] = zero ? 0 : line->count[sym_counter] * 7 / 8; | |
378 | line = line->next; | |
379 | } | |
b269876c | 380 | pthread_mutex_unlock(&syme->src->lock); |
923c42c1 MG |
381 | if (more) |
382 | printf("%d lines not displayed, maybe increase display entries [e]\n", more); | |
383 | } | |
07800601 | 384 | |
de04687f | 385 | /* |
5b2bb75a | 386 | * Symbols will be added here in event__process_sample and will get out |
de04687f ACM |
387 | * after decayed. |
388 | */ | |
389 | static LIST_HEAD(active_symbols); | |
c44613a4 | 390 | static pthread_mutex_t active_symbols_lock = PTHREAD_MUTEX_INITIALIZER; |
07800601 | 391 | |
07800601 IM |
392 | /* |
393 | * Ordering weight: count-1 * count-2 * ... / count-n | |
394 | */ | |
395 | static double sym_weight(const struct sym_entry *sym) | |
396 | { | |
c44613a4 | 397 | double weight = sym->snap_count; |
07800601 IM |
398 | int counter; |
399 | ||
46ab9764 MG |
400 | if (!display_weighted) |
401 | return weight; | |
402 | ||
07800601 IM |
403 | for (counter = 1; counter < nr_counters-1; counter++) |
404 | weight *= sym->count[counter]; | |
405 | ||
406 | weight /= (sym->count[counter] + 1); | |
407 | ||
408 | return weight; | |
409 | } | |
410 | ||
2debbc83 IM |
411 | static long samples; |
412 | static long userspace_samples; | |
07800601 IM |
413 | static const char CONSOLE_CLEAR[] = "\e[H\e[2J"; |
414 | ||
c44613a4 | 415 | static void __list_insert_active_sym(struct sym_entry *syme) |
de04687f ACM |
416 | { |
417 | list_add(&syme->node, &active_symbols); | |
418 | } | |
419 | ||
c44613a4 ACM |
420 | static void list_remove_active_sym(struct sym_entry *syme) |
421 | { | |
422 | pthread_mutex_lock(&active_symbols_lock); | |
423 | list_del_init(&syme->node); | |
424 | pthread_mutex_unlock(&active_symbols_lock); | |
425 | } | |
426 | ||
de04687f ACM |
427 | static void rb_insert_active_sym(struct rb_root *tree, struct sym_entry *se) |
428 | { | |
429 | struct rb_node **p = &tree->rb_node; | |
430 | struct rb_node *parent = NULL; | |
431 | struct sym_entry *iter; | |
432 | ||
433 | while (*p != NULL) { | |
434 | parent = *p; | |
435 | iter = rb_entry(parent, struct sym_entry, rb_node); | |
436 | ||
c44613a4 | 437 | if (se->weight > iter->weight) |
de04687f ACM |
438 | p = &(*p)->rb_left; |
439 | else | |
440 | p = &(*p)->rb_right; | |
441 | } | |
442 | ||
443 | rb_link_node(&se->rb_node, parent, p); | |
444 | rb_insert_color(&se->rb_node, tree); | |
445 | } | |
07800601 IM |
446 | |
447 | static void print_sym_table(void) | |
448 | { | |
233f0b95 | 449 | int printed = 0, j; |
46ab9764 | 450 | int counter, snap = !display_weighted ? sym_counter : 0; |
2debbc83 IM |
451 | float samples_per_sec = samples/delay_secs; |
452 | float ksamples_per_sec = (samples-userspace_samples)/delay_secs; | |
453 | float sum_ksamples = 0.0; | |
de04687f ACM |
454 | struct sym_entry *syme, *n; |
455 | struct rb_root tmp = RB_ROOT; | |
456 | struct rb_node *nd; | |
7cc017ed | 457 | int sym_width = 0, dso_width = 0, max_dso_width; |
13cc5079 | 458 | const int win_width = winsize.ws_col - 1; |
07800601 | 459 | |
2debbc83 | 460 | samples = userspace_samples = 0; |
07800601 | 461 | |
de04687f | 462 | /* Sort the active symbols */ |
c44613a4 ACM |
463 | pthread_mutex_lock(&active_symbols_lock); |
464 | syme = list_entry(active_symbols.next, struct sym_entry, node); | |
465 | pthread_mutex_unlock(&active_symbols_lock); | |
466 | ||
467 | list_for_each_entry_safe_from(syme, n, &active_symbols, node) { | |
46ab9764 | 468 | syme->snap_count = syme->count[snap]; |
c44613a4 | 469 | if (syme->snap_count != 0) { |
13cc5079 | 470 | |
8ffcda17 ACM |
471 | if ((hide_user_symbols && |
472 | syme->origin == PERF_RECORD_MISC_USER) || | |
473 | (hide_kernel_symbols && | |
474 | syme->origin == PERF_RECORD_MISC_KERNEL)) { | |
475 | list_remove_active_sym(syme); | |
476 | continue; | |
477 | } | |
c44613a4 | 478 | syme->weight = sym_weight(syme); |
de04687f | 479 | rb_insert_active_sym(&tmp, syme); |
2debbc83 | 480 | sum_ksamples += syme->snap_count; |
d94b9430 MG |
481 | |
482 | for (j = 0; j < nr_counters; j++) | |
de04687f ACM |
483 | syme->count[j] = zero ? 0 : syme->count[j] * 7 / 8; |
484 | } else | |
c44613a4 | 485 | list_remove_active_sym(syme); |
d94b9430 MG |
486 | } |
487 | ||
0f5486b5 | 488 | puts(CONSOLE_CLEAR); |
07800601 | 489 | |
13cc5079 | 490 | printf("%-*.*s\n", win_width, win_width, graph_dotted_line); |
f2521b6e | 491 | printf( " PerfTop:%8.0f irqs/sec kernel:%4.1f%% [", |
2debbc83 IM |
492 | samples_per_sec, |
493 | 100.0 - (100.0*((samples_per_sec-ksamples_per_sec)/samples_per_sec))); | |
07800601 | 494 | |
46ab9764 | 495 | if (nr_counters == 1 || !display_weighted) { |
9cffa8d5 | 496 | printf("%Ld", (u64)attrs[0].sample_period); |
cf1f4574 IM |
497 | if (freq) |
498 | printf("Hz "); | |
499 | else | |
500 | printf(" "); | |
501 | } | |
07800601 | 502 | |
46ab9764 MG |
503 | if (!display_weighted) |
504 | printf("%s", event_name(sym_counter)); | |
505 | else for (counter = 0; counter < nr_counters; counter++) { | |
07800601 IM |
506 | if (counter) |
507 | printf("/"); | |
508 | ||
509 | printf("%s", event_name(counter)); | |
510 | } | |
511 | ||
512 | printf( "], "); | |
513 | ||
b456bae0 IM |
514 | if (target_pid != -1) |
515 | printf(" (target_pid: %d", target_pid); | |
07800601 IM |
516 | else |
517 | printf(" (all"); | |
518 | ||
519 | if (profile_cpu != -1) | |
520 | printf(", cpu: %d)\n", profile_cpu); | |
521 | else { | |
b456bae0 | 522 | if (target_pid != -1) |
07800601 IM |
523 | printf(")\n"); |
524 | else | |
525 | printf(", %d CPUs)\n", nr_cpus); | |
526 | } | |
527 | ||
1a105f74 | 528 | printf("%-*.*s\n", win_width, win_width, graph_dotted_line); |
07800601 | 529 | |
923c42c1 MG |
530 | if (sym_filter_entry) { |
531 | show_details(sym_filter_entry); | |
532 | return; | |
533 | } | |
534 | ||
13cc5079 ACM |
535 | /* |
536 | * Find the longest symbol name that will be displayed | |
537 | */ | |
538 | for (nd = rb_first(&tmp); nd; nd = rb_next(nd)) { | |
539 | syme = rb_entry(nd, struct sym_entry, rb_node); | |
540 | if (++printed > print_entries || | |
541 | (int)syme->snap_count < count_filter) | |
542 | continue; | |
543 | ||
1a105f74 ACM |
544 | if (syme->map->dso->long_name_len > dso_width) |
545 | dso_width = syme->map->dso->long_name_len; | |
546 | ||
13cc5079 ACM |
547 | if (syme->name_len > sym_width) |
548 | sym_width = syme->name_len; | |
549 | } | |
550 | ||
551 | printed = 0; | |
552 | ||
7cc017ed ACM |
553 | max_dso_width = winsize.ws_col - sym_width - 29; |
554 | if (dso_width > max_dso_width) | |
555 | dso_width = max_dso_width; | |
556 | putchar('\n'); | |
07800601 | 557 | if (nr_counters == 1) |
5b2bb75a | 558 | printf(" samples pcnt"); |
07800601 | 559 | else |
5b2bb75a | 560 | printf(" weight samples pcnt"); |
07800601 | 561 | |
7ced156b ACM |
562 | if (verbose) |
563 | printf(" RIP "); | |
7cc017ed | 564 | printf(" %-*.*s DSO\n", sym_width, sym_width, "function"); |
5b2bb75a | 565 | printf(" %s _______ _____", |
7ced156b ACM |
566 | nr_counters == 1 ? " " : "______"); |
567 | if (verbose) | |
5b2bb75a | 568 | printf(" ________________"); |
1a105f74 | 569 | printf(" %-*.*s", sym_width, sym_width, graph_line); |
7cc017ed | 570 | printf(" %-*.*s", dso_width, dso_width, graph_line); |
1a105f74 | 571 | puts("\n"); |
07800601 | 572 | |
de04687f | 573 | for (nd = rb_first(&tmp); nd; nd = rb_next(nd)) { |
83a0944f | 574 | struct symbol *sym; |
8fc0321f | 575 | double pcnt; |
d94b9430 | 576 | |
83a0944f | 577 | syme = rb_entry(nd, struct sym_entry, rb_node); |
51a472de | 578 | sym = sym_entry__symbol(syme); |
83a0944f | 579 | |
923c42c1 | 580 | if (++printed > print_entries || (int)syme->snap_count < count_filter) |
c44613a4 | 581 | continue; |
d94b9430 | 582 | |
2debbc83 IM |
583 | pcnt = 100.0 - (100.0 * ((sum_ksamples - syme->snap_count) / |
584 | sum_ksamples)); | |
d94b9430 | 585 | |
46ab9764 | 586 | if (nr_counters == 1 || !display_weighted) |
5b2bb75a | 587 | printf("%20.2f ", syme->weight); |
d94b9430 | 588 | else |
5b2bb75a | 589 | printf("%9.1f %10ld ", syme->weight, syme->snap_count); |
8fc0321f | 590 | |
1e11fd82 | 591 | percent_color_fprintf(stdout, "%4.1f%%", pcnt); |
7ced156b | 592 | if (verbose) |
5b2bb75a | 593 | printf(" %016llx", sym->start); |
13cc5079 | 594 | printf(" %-*.*s", sym_width, sym_width, sym->name); |
7cc017ed ACM |
595 | printf(" %-*.*s\n", dso_width, dso_width, |
596 | dso_width >= syme->map->dso->long_name_len ? | |
597 | syme->map->dso->long_name : | |
598 | syme->map->dso->short_name); | |
07800601 | 599 | } |
07800601 IM |
600 | } |
601 | ||
923c42c1 MG |
602 | static void prompt_integer(int *target, const char *msg) |
603 | { | |
604 | char *buf = malloc(0), *p; | |
605 | size_t dummy = 0; | |
606 | int tmp; | |
607 | ||
608 | fprintf(stdout, "\n%s: ", msg); | |
609 | if (getline(&buf, &dummy, stdin) < 0) | |
610 | return; | |
611 | ||
612 | p = strchr(buf, '\n'); | |
613 | if (p) | |
614 | *p = 0; | |
615 | ||
616 | p = buf; | |
617 | while(*p) { | |
618 | if (!isdigit(*p)) | |
619 | goto out_free; | |
620 | p++; | |
621 | } | |
622 | tmp = strtoul(buf, NULL, 10); | |
623 | *target = tmp; | |
624 | out_free: | |
625 | free(buf); | |
626 | } | |
627 | ||
628 | static void prompt_percent(int *target, const char *msg) | |
629 | { | |
630 | int tmp = 0; | |
631 | ||
632 | prompt_integer(&tmp, msg); | |
633 | if (tmp >= 0 && tmp <= 100) | |
634 | *target = tmp; | |
635 | } | |
636 | ||
637 | static void prompt_symbol(struct sym_entry **target, const char *msg) | |
638 | { | |
639 | char *buf = malloc(0), *p; | |
640 | struct sym_entry *syme = *target, *n, *found = NULL; | |
641 | size_t dummy = 0; | |
642 | ||
643 | /* zero counters of active symbol */ | |
644 | if (syme) { | |
b269876c | 645 | pthread_mutex_lock(&syme->src->lock); |
923c42c1 MG |
646 | __zero_source_counters(syme); |
647 | *target = NULL; | |
b269876c | 648 | pthread_mutex_unlock(&syme->src->lock); |
923c42c1 MG |
649 | } |
650 | ||
651 | fprintf(stdout, "\n%s: ", msg); | |
652 | if (getline(&buf, &dummy, stdin) < 0) | |
653 | goto out_free; | |
654 | ||
655 | p = strchr(buf, '\n'); | |
656 | if (p) | |
657 | *p = 0; | |
658 | ||
659 | pthread_mutex_lock(&active_symbols_lock); | |
660 | syme = list_entry(active_symbols.next, struct sym_entry, node); | |
661 | pthread_mutex_unlock(&active_symbols_lock); | |
662 | ||
663 | list_for_each_entry_safe_from(syme, n, &active_symbols, node) { | |
51a472de | 664 | struct symbol *sym = sym_entry__symbol(syme); |
923c42c1 MG |
665 | |
666 | if (!strcmp(buf, sym->name)) { | |
667 | found = syme; | |
668 | break; | |
669 | } | |
670 | } | |
671 | ||
672 | if (!found) { | |
66aeb6d5 | 673 | fprintf(stderr, "Sorry, %s is not active.\n", buf); |
923c42c1 MG |
674 | sleep(1); |
675 | return; | |
676 | } else | |
677 | parse_source(found); | |
678 | ||
679 | out_free: | |
680 | free(buf); | |
681 | } | |
682 | ||
091bd2e9 | 683 | static void print_mapped_keys(void) |
923c42c1 | 684 | { |
091bd2e9 MG |
685 | char *name = NULL; |
686 | ||
687 | if (sym_filter_entry) { | |
51a472de | 688 | struct symbol *sym = sym_entry__symbol(sym_filter_entry); |
091bd2e9 MG |
689 | name = sym->name; |
690 | } | |
691 | ||
692 | fprintf(stdout, "\nMapped keys:\n"); | |
693 | fprintf(stdout, "\t[d] display refresh delay. \t(%d)\n", delay_secs); | |
694 | fprintf(stdout, "\t[e] display entries (lines). \t(%d)\n", print_entries); | |
695 | ||
696 | if (nr_counters > 1) | |
697 | fprintf(stdout, "\t[E] active event counter. \t(%s)\n", event_name(sym_counter)); | |
698 | ||
699 | fprintf(stdout, "\t[f] profile display filter (count). \t(%d)\n", count_filter); | |
700 | ||
6cff0e8d KS |
701 | fprintf(stdout, "\t[F] annotate display filter (percent). \t(%d%%)\n", sym_pcnt_filter); |
702 | fprintf(stdout, "\t[s] annotate symbol. \t(%s)\n", name?: "NULL"); | |
703 | fprintf(stdout, "\t[S] stop annotation.\n"); | |
091bd2e9 MG |
704 | |
705 | if (nr_counters > 1) | |
706 | fprintf(stdout, "\t[w] toggle display weighted/count[E]r. \t(%d)\n", display_weighted ? 1 : 0); | |
707 | ||
8ffcda17 | 708 | fprintf(stdout, |
1a72cfa6 | 709 | "\t[K] hide kernel_symbols symbols. \t(%s)\n", |
8ffcda17 ACM |
710 | hide_kernel_symbols ? "yes" : "no"); |
711 | fprintf(stdout, | |
712 | "\t[U] hide user symbols. \t(%s)\n", | |
713 | hide_user_symbols ? "yes" : "no"); | |
46ab9764 | 714 | fprintf(stdout, "\t[z] toggle sample zeroing. \t(%d)\n", zero ? 1 : 0); |
091bd2e9 MG |
715 | fprintf(stdout, "\t[qQ] quit.\n"); |
716 | } | |
717 | ||
718 | static int key_mapped(int c) | |
719 | { | |
720 | switch (c) { | |
721 | case 'd': | |
722 | case 'e': | |
723 | case 'f': | |
724 | case 'z': | |
725 | case 'q': | |
726 | case 'Q': | |
8ffcda17 ACM |
727 | case 'K': |
728 | case 'U': | |
6cff0e8d KS |
729 | case 'F': |
730 | case 's': | |
731 | case 'S': | |
091bd2e9 MG |
732 | return 1; |
733 | case 'E': | |
734 | case 'w': | |
735 | return nr_counters > 1 ? 1 : 0; | |
83a0944f IM |
736 | default: |
737 | break; | |
091bd2e9 MG |
738 | } |
739 | ||
740 | return 0; | |
923c42c1 MG |
741 | } |
742 | ||
743 | static void handle_keypress(int c) | |
744 | { | |
091bd2e9 MG |
745 | if (!key_mapped(c)) { |
746 | struct pollfd stdin_poll = { .fd = 0, .events = POLLIN }; | |
747 | struct termios tc, save; | |
748 | ||
749 | print_mapped_keys(); | |
750 | fprintf(stdout, "\nEnter selection, or unmapped key to continue: "); | |
751 | fflush(stdout); | |
752 | ||
753 | tcgetattr(0, &save); | |
754 | tc = save; | |
755 | tc.c_lflag &= ~(ICANON | ECHO); | |
756 | tc.c_cc[VMIN] = 0; | |
757 | tc.c_cc[VTIME] = 0; | |
758 | tcsetattr(0, TCSANOW, &tc); | |
759 | ||
760 | poll(&stdin_poll, 1, -1); | |
761 | c = getc(stdin); | |
762 | ||
763 | tcsetattr(0, TCSAFLUSH, &save); | |
764 | if (!key_mapped(c)) | |
765 | return; | |
766 | } | |
767 | ||
923c42c1 MG |
768 | switch (c) { |
769 | case 'd': | |
770 | prompt_integer(&delay_secs, "Enter display delay"); | |
dc79959a TB |
771 | if (delay_secs < 1) |
772 | delay_secs = 1; | |
923c42c1 MG |
773 | break; |
774 | case 'e': | |
775 | prompt_integer(&print_entries, "Enter display entries (lines)"); | |
3b6ed988 | 776 | if (print_entries == 0) { |
13cc5079 | 777 | sig_winch_handler(SIGWINCH); |
3b6ed988 ACM |
778 | signal(SIGWINCH, sig_winch_handler); |
779 | } else | |
780 | signal(SIGWINCH, SIG_DFL); | |
923c42c1 MG |
781 | break; |
782 | case 'E': | |
783 | if (nr_counters > 1) { | |
784 | int i; | |
785 | ||
786 | fprintf(stderr, "\nAvailable events:"); | |
787 | for (i = 0; i < nr_counters; i++) | |
788 | fprintf(stderr, "\n\t%d %s", i, event_name(i)); | |
789 | ||
790 | prompt_integer(&sym_counter, "Enter details event counter"); | |
791 | ||
792 | if (sym_counter >= nr_counters) { | |
793 | fprintf(stderr, "Sorry, no such event, using %s.\n", event_name(0)); | |
794 | sym_counter = 0; | |
795 | sleep(1); | |
796 | } | |
797 | } else sym_counter = 0; | |
798 | break; | |
799 | case 'f': | |
800 | prompt_integer(&count_filter, "Enter display event count filter"); | |
801 | break; | |
802 | case 'F': | |
803 | prompt_percent(&sym_pcnt_filter, "Enter details display event filter (percent)"); | |
804 | break; | |
8ffcda17 ACM |
805 | case 'K': |
806 | hide_kernel_symbols = !hide_kernel_symbols; | |
807 | break; | |
923c42c1 MG |
808 | case 'q': |
809 | case 'Q': | |
810 | printf("exiting.\n"); | |
c338aee8 ACM |
811 | if (dump_symtab) |
812 | dsos__fprintf(stderr); | |
923c42c1 MG |
813 | exit(0); |
814 | case 's': | |
815 | prompt_symbol(&sym_filter_entry, "Enter details symbol"); | |
816 | break; | |
817 | case 'S': | |
818 | if (!sym_filter_entry) | |
819 | break; | |
820 | else { | |
821 | struct sym_entry *syme = sym_filter_entry; | |
822 | ||
b269876c | 823 | pthread_mutex_lock(&syme->src->lock); |
923c42c1 MG |
824 | sym_filter_entry = NULL; |
825 | __zero_source_counters(syme); | |
b269876c | 826 | pthread_mutex_unlock(&syme->src->lock); |
923c42c1 MG |
827 | } |
828 | break; | |
8ffcda17 ACM |
829 | case 'U': |
830 | hide_user_symbols = !hide_user_symbols; | |
831 | break; | |
46ab9764 MG |
832 | case 'w': |
833 | display_weighted = ~display_weighted; | |
834 | break; | |
923c42c1 MG |
835 | case 'z': |
836 | zero = ~zero; | |
837 | break; | |
83a0944f IM |
838 | default: |
839 | break; | |
923c42c1 MG |
840 | } |
841 | } | |
842 | ||
f37a291c | 843 | static void *display_thread(void *arg __used) |
07800601 | 844 | { |
0f5486b5 | 845 | struct pollfd stdin_poll = { .fd = 0, .events = POLLIN }; |
923c42c1 MG |
846 | struct termios tc, save; |
847 | int delay_msecs, c; | |
848 | ||
849 | tcgetattr(0, &save); | |
850 | tc = save; | |
851 | tc.c_lflag &= ~(ICANON | ECHO); | |
852 | tc.c_cc[VMIN] = 0; | |
853 | tc.c_cc[VTIME] = 0; | |
091bd2e9 | 854 | |
923c42c1 MG |
855 | repeat: |
856 | delay_msecs = delay_secs * 1000; | |
857 | tcsetattr(0, TCSANOW, &tc); | |
858 | /* trash return*/ | |
859 | getc(stdin); | |
07800601 | 860 | |
0f5486b5 | 861 | do { |
07800601 | 862 | print_sym_table(); |
0f5486b5 FW |
863 | } while (!poll(&stdin_poll, 1, delay_msecs) == 1); |
864 | ||
923c42c1 MG |
865 | c = getc(stdin); |
866 | tcsetattr(0, TCSAFLUSH, &save); | |
867 | ||
868 | handle_keypress(c); | |
869 | goto repeat; | |
07800601 IM |
870 | |
871 | return NULL; | |
872 | } | |
873 | ||
2ab52083 | 874 | /* Tag samples to be skipped. */ |
f37a291c | 875 | static const char *skip_symbols[] = { |
2ab52083 AB |
876 | "default_idle", |
877 | "cpu_idle", | |
878 | "enter_idle", | |
879 | "exit_idle", | |
880 | "mwait_idle", | |
59b90056 | 881 | "mwait_idle_with_hints", |
8357275b | 882 | "poll_idle", |
3a3393ef AB |
883 | "ppc64_runlatch_off", |
884 | "pseries_dedicated_idle_sleep", | |
2ab52083 AB |
885 | NULL |
886 | }; | |
887 | ||
439d473b | 888 | static int symbol_filter(struct map *map, struct symbol *sym) |
07800601 | 889 | { |
de04687f ACM |
890 | struct sym_entry *syme; |
891 | const char *name = sym->name; | |
2ab52083 | 892 | int i; |
de04687f | 893 | |
3a3393ef AB |
894 | /* |
895 | * ppc64 uses function descriptors and appends a '.' to the | |
896 | * start of every instruction address. Remove it. | |
897 | */ | |
898 | if (name[0] == '.') | |
899 | name++; | |
900 | ||
de04687f ACM |
901 | if (!strcmp(name, "_text") || |
902 | !strcmp(name, "_etext") || | |
903 | !strcmp(name, "_sinittext") || | |
904 | !strncmp("init_module", name, 11) || | |
905 | !strncmp("cleanup_module", name, 14) || | |
906 | strstr(name, "_text_start") || | |
907 | strstr(name, "_text_end")) | |
07800601 | 908 | return 1; |
07800601 | 909 | |
00a192b3 | 910 | syme = symbol__priv(sym); |
439d473b | 911 | syme->map = map; |
b269876c | 912 | syme->src = NULL; |
6cff0e8d KS |
913 | |
914 | if (!sym_filter_entry && sym_filter && !strcmp(name, sym_filter)) { | |
915 | /* schedule initial sym_filter_entry setup */ | |
916 | sym_filter_entry_sched = syme; | |
917 | sym_filter = NULL; | |
918 | } | |
923c42c1 | 919 | |
2ab52083 AB |
920 | for (i = 0; skip_symbols[i]; i++) { |
921 | if (!strcmp(skip_symbols[i], name)) { | |
922 | syme->skip = 1; | |
923 | break; | |
924 | } | |
925 | } | |
07800601 | 926 | |
13cc5079 ACM |
927 | if (!syme->skip) |
928 | syme->name_len = strlen(sym->name); | |
929 | ||
07800601 IM |
930 | return 0; |
931 | } | |
932 | ||
b3165f41 ACM |
933 | static void event__process_sample(const event_t *self, |
934 | struct perf_session *session, int counter) | |
07800601 | 935 | { |
5b2bb75a | 936 | u64 ip = self->ip.ip; |
5b2bb75a | 937 | struct sym_entry *syme; |
1ed091c4 | 938 | struct addr_location al; |
8ffcda17 | 939 | u8 origin = self->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; |
5b2bb75a | 940 | |
24bfef0f ACM |
941 | ++samples; |
942 | ||
8ffcda17 | 943 | switch (origin) { |
1ed091c4 | 944 | case PERF_RECORD_MISC_USER: |
24bfef0f | 945 | ++userspace_samples; |
8ffcda17 ACM |
946 | if (hide_user_symbols) |
947 | return; | |
1ed091c4 | 948 | break; |
5b2bb75a | 949 | case PERF_RECORD_MISC_KERNEL: |
8ffcda17 ACM |
950 | if (hide_kernel_symbols) |
951 | return; | |
5b2bb75a ACM |
952 | break; |
953 | default: | |
954 | return; | |
955 | } | |
956 | ||
b3165f41 | 957 | if (event__preprocess_sample(self, session, &al, symbol_filter) < 0 || |
72b8fa17 | 958 | al.filtered) |
1ed091c4 | 959 | return; |
07800601 | 960 | |
72b8fa17 ACM |
961 | if (al.sym == NULL) { |
962 | /* | |
963 | * As we do lazy loading of symtabs we only will know if the | |
964 | * specified vmlinux file is invalid when we actually have a | |
965 | * hit in kernel space and then try to load it. So if we get | |
966 | * here and there are _no_ symbols in the DSO backing the | |
967 | * kernel map, bail out. | |
968 | * | |
969 | * We may never get here, for instance, if we use -K/ | |
970 | * --hide-kernel-symbols, even if the user specifies an | |
971 | * invalid --vmlinux ;-) | |
972 | */ | |
973 | if (al.map == session->vmlinux_maps[MAP__FUNCTION] && | |
974 | RB_EMPTY_ROOT(&al.map->dso->symbols[MAP__FUNCTION])) { | |
975 | pr_err("The %s file can't be used\n", | |
976 | symbol_conf.vmlinux_name); | |
977 | exit(1); | |
978 | } | |
979 | ||
980 | return; | |
981 | } | |
982 | ||
6cff0e8d KS |
983 | /* let's see, whether we need to install initial sym_filter_entry */ |
984 | if (sym_filter_entry_sched) { | |
985 | sym_filter_entry = sym_filter_entry_sched; | |
986 | sym_filter_entry_sched = NULL; | |
987 | parse_source(sym_filter_entry); | |
988 | } | |
989 | ||
1ed091c4 | 990 | syme = symbol__priv(al.sym); |
5b2bb75a ACM |
991 | if (!syme->skip) { |
992 | syme->count[counter]++; | |
8ffcda17 | 993 | syme->origin = origin; |
5b2bb75a ACM |
994 | record_precise_ip(syme, counter, ip); |
995 | pthread_mutex_lock(&active_symbols_lock); | |
996 | if (list_empty(&syme->node) || !syme->node.next) | |
997 | __list_insert_active_sym(syme); | |
998 | pthread_mutex_unlock(&active_symbols_lock); | |
5b2bb75a | 999 | } |
07800601 IM |
1000 | } |
1001 | ||
d8f66248 | 1002 | static int event__process(event_t *event, struct perf_session *session) |
5b2bb75a ACM |
1003 | { |
1004 | switch (event->header.type) { | |
1005 | case PERF_RECORD_COMM: | |
d8f66248 | 1006 | event__process_comm(event, session); |
5b2bb75a ACM |
1007 | break; |
1008 | case PERF_RECORD_MMAP: | |
d8f66248 | 1009 | event__process_mmap(event, session); |
5b2bb75a | 1010 | break; |
0f35cd4c ACM |
1011 | case PERF_RECORD_FORK: |
1012 | case PERF_RECORD_EXIT: | |
1013 | event__process_task(event, session); | |
1014 | break; | |
5b2bb75a ACM |
1015 | default: |
1016 | break; | |
07800601 IM |
1017 | } |
1018 | ||
5b2bb75a | 1019 | return 0; |
07800601 IM |
1020 | } |
1021 | ||
07800601 | 1022 | struct mmap_data { |
a21ca2ca IM |
1023 | int counter; |
1024 | void *base; | |
f37a291c | 1025 | int mask; |
a21ca2ca | 1026 | unsigned int prev; |
07800601 IM |
1027 | }; |
1028 | ||
1029 | static unsigned int mmap_read_head(struct mmap_data *md) | |
1030 | { | |
cdd6c482 | 1031 | struct perf_event_mmap_page *pc = md->base; |
07800601 IM |
1032 | int head; |
1033 | ||
1034 | head = pc->data_head; | |
1035 | rmb(); | |
1036 | ||
1037 | return head; | |
1038 | } | |
1039 | ||
d8f66248 ACM |
1040 | static void perf_session__mmap_read_counter(struct perf_session *self, |
1041 | struct mmap_data *md) | |
07800601 IM |
1042 | { |
1043 | unsigned int head = mmap_read_head(md); | |
1044 | unsigned int old = md->prev; | |
1045 | unsigned char *data = md->base + page_size; | |
1046 | int diff; | |
1047 | ||
07800601 IM |
1048 | /* |
1049 | * If we're further behind than half the buffer, there's a chance | |
2debbc83 | 1050 | * the writer will bite our tail and mess up the samples under us. |
07800601 IM |
1051 | * |
1052 | * If we somehow ended up ahead of the head, we got messed up. | |
1053 | * | |
1054 | * In either case, truncate and restart at head. | |
1055 | */ | |
1056 | diff = head - old; | |
1057 | if (diff > md->mask / 2 || diff < 0) { | |
f4f0b418 | 1058 | fprintf(stderr, "WARNING: failed to keep up with mmap data.\n"); |
07800601 IM |
1059 | |
1060 | /* | |
1061 | * head points to a known good entry, start there. | |
1062 | */ | |
1063 | old = head; | |
1064 | } | |
1065 | ||
07800601 | 1066 | for (; old != head;) { |
07800601 IM |
1067 | event_t *event = (event_t *)&data[old & md->mask]; |
1068 | ||
1069 | event_t event_copy; | |
1070 | ||
6f06ccbc | 1071 | size_t size = event->header.size; |
07800601 IM |
1072 | |
1073 | /* | |
1074 | * Event straddles the mmap boundary -- header should always | |
1075 | * be inside due to u64 alignment of output. | |
1076 | */ | |
1077 | if ((old & md->mask) + size != ((old + size) & md->mask)) { | |
1078 | unsigned int offset = old; | |
1079 | unsigned int len = min(sizeof(*event), size), cpy; | |
1080 | void *dst = &event_copy; | |
1081 | ||
1082 | do { | |
1083 | cpy = min(md->mask + 1 - (offset & md->mask), len); | |
1084 | memcpy(dst, &data[offset & md->mask], cpy); | |
1085 | offset += cpy; | |
1086 | dst += cpy; | |
1087 | len -= cpy; | |
1088 | } while (len); | |
1089 | ||
1090 | event = &event_copy; | |
1091 | } | |
1092 | ||
5b2bb75a | 1093 | if (event->header.type == PERF_RECORD_SAMPLE) |
b3165f41 | 1094 | event__process_sample(event, self, md->counter); |
5b2bb75a | 1095 | else |
d8f66248 | 1096 | event__process(event, self); |
07800601 | 1097 | old += size; |
07800601 IM |
1098 | } |
1099 | ||
1100 | md->prev = old; | |
1101 | } | |
1102 | ||
c2990a2a MG |
1103 | static struct pollfd event_array[MAX_NR_CPUS * MAX_COUNTERS]; |
1104 | static struct mmap_data mmap_array[MAX_NR_CPUS][MAX_COUNTERS]; | |
1105 | ||
d8f66248 | 1106 | static void perf_session__mmap_read(struct perf_session *self) |
2f01190a FW |
1107 | { |
1108 | int i, counter; | |
1109 | ||
1110 | for (i = 0; i < nr_cpus; i++) { | |
1111 | for (counter = 0; counter < nr_counters; counter++) | |
d8f66248 | 1112 | perf_session__mmap_read_counter(self, &mmap_array[i][counter]); |
2f01190a FW |
1113 | } |
1114 | } | |
1115 | ||
716c69fe IM |
1116 | int nr_poll; |
1117 | int group_fd; | |
1118 | ||
1119 | static void start_counter(int i, int counter) | |
07800601 | 1120 | { |
cdd6c482 | 1121 | struct perf_event_attr *attr; |
0fdc7e67 | 1122 | int cpu; |
716c69fe IM |
1123 | |
1124 | cpu = profile_cpu; | |
1125 | if (target_pid == -1 && profile_cpu == -1) | |
1126 | cpu = i; | |
1127 | ||
1128 | attr = attrs + counter; | |
1129 | ||
1130 | attr->sample_type = PERF_SAMPLE_IP | PERF_SAMPLE_TID; | |
7e4ff9e3 MG |
1131 | |
1132 | if (freq) { | |
1133 | attr->sample_type |= PERF_SAMPLE_PERIOD; | |
1134 | attr->freq = 1; | |
1135 | attr->sample_freq = freq; | |
1136 | } | |
1137 | ||
0fdc7e67 | 1138 | attr->inherit = (cpu < 0) && inherit; |
5b2bb75a | 1139 | attr->mmap = 1; |
716c69fe IM |
1140 | |
1141 | try_again: | |
cdd6c482 | 1142 | fd[i][counter] = sys_perf_event_open(attr, target_pid, cpu, group_fd, 0); |
716c69fe IM |
1143 | |
1144 | if (fd[i][counter] < 0) { | |
1145 | int err = errno; | |
1146 | ||
c10edee2 | 1147 | if (err == EPERM || err == EACCES) |
3da297a6 | 1148 | die("No permission - are you root?\n"); |
716c69fe IM |
1149 | /* |
1150 | * If it's cycles then fall back to hrtimer | |
1151 | * based cpu-clock-tick sw counter, which | |
1152 | * is always available even if no PMU support: | |
1153 | */ | |
1154 | if (attr->type == PERF_TYPE_HARDWARE | |
f4dbfa8f | 1155 | && attr->config == PERF_COUNT_HW_CPU_CYCLES) { |
716c69fe | 1156 | |
3da297a6 IM |
1157 | if (verbose) |
1158 | warning(" ... trying to fall back to cpu-clock-ticks\n"); | |
1159 | ||
716c69fe | 1160 | attr->type = PERF_TYPE_SOFTWARE; |
f4dbfa8f | 1161 | attr->config = PERF_COUNT_SW_CPU_CLOCK; |
716c69fe IM |
1162 | goto try_again; |
1163 | } | |
30c806a0 IM |
1164 | printf("\n"); |
1165 | error("perfcounter syscall returned with %d (%s)\n", | |
1166 | fd[i][counter], strerror(err)); | |
cdd6c482 | 1167 | die("No CONFIG_PERF_EVENTS=y kernel support configured?\n"); |
716c69fe IM |
1168 | exit(-1); |
1169 | } | |
1170 | assert(fd[i][counter] >= 0); | |
1171 | fcntl(fd[i][counter], F_SETFL, O_NONBLOCK); | |
1172 | ||
1173 | /* | |
1174 | * First counter acts as the group leader: | |
1175 | */ | |
1176 | if (group && group_fd == -1) | |
1177 | group_fd = fd[i][counter]; | |
1178 | ||
1179 | event_array[nr_poll].fd = fd[i][counter]; | |
1180 | event_array[nr_poll].events = POLLIN; | |
1181 | nr_poll++; | |
1182 | ||
1183 | mmap_array[i][counter].counter = counter; | |
1184 | mmap_array[i][counter].prev = 0; | |
1185 | mmap_array[i][counter].mask = mmap_pages*page_size - 1; | |
1186 | mmap_array[i][counter].base = mmap(NULL, (mmap_pages+1)*page_size, | |
1187 | PROT_READ, MAP_SHARED, fd[i][counter], 0); | |
1188 | if (mmap_array[i][counter].base == MAP_FAILED) | |
1189 | die("failed to mmap with %d (%s)\n", errno, strerror(errno)); | |
1190 | } | |
1191 | ||
1192 | static int __cmd_top(void) | |
1193 | { | |
1194 | pthread_t thread; | |
1195 | int i, counter; | |
07800601 | 1196 | int ret; |
d8f66248 | 1197 | /* |
b3165f41 ACM |
1198 | * FIXME: perf_session__new should allow passing a O_MMAP, so that all this |
1199 | * mmap reading, etc is encapsulated in it. Use O_WRONLY for now. | |
d8f66248 | 1200 | */ |
75be6cf4 | 1201 | struct perf_session *session = perf_session__new(NULL, O_WRONLY, false); |
b3165f41 ACM |
1202 | if (session == NULL) |
1203 | return -ENOMEM; | |
07800601 | 1204 | |
5b2bb75a | 1205 | if (target_pid != -1) |
d8f66248 | 1206 | event__synthesize_thread(target_pid, event__process, session); |
5b2bb75a | 1207 | else |
d8f66248 | 1208 | event__synthesize_threads(event__process, session); |
5b2bb75a | 1209 | |
07800601 IM |
1210 | for (i = 0; i < nr_cpus; i++) { |
1211 | group_fd = -1; | |
716c69fe IM |
1212 | for (counter = 0; counter < nr_counters; counter++) |
1213 | start_counter(i, counter); | |
07800601 IM |
1214 | } |
1215 | ||
2f01190a FW |
1216 | /* Wait for a minimal set of events before starting the snapshot */ |
1217 | poll(event_array, nr_poll, 100); | |
1218 | ||
d8f66248 | 1219 | perf_session__mmap_read(session); |
2f01190a | 1220 | |
07800601 IM |
1221 | if (pthread_create(&thread, NULL, display_thread, NULL)) { |
1222 | printf("Could not create display thread.\n"); | |
1223 | exit(-1); | |
1224 | } | |
1225 | ||
1226 | if (realtime_prio) { | |
1227 | struct sched_param param; | |
1228 | ||
1229 | param.sched_priority = realtime_prio; | |
1230 | if (sched_setscheduler(0, SCHED_FIFO, ¶m)) { | |
1231 | printf("Could not set realtime priority.\n"); | |
1232 | exit(-1); | |
1233 | } | |
1234 | } | |
1235 | ||
1236 | while (1) { | |
2debbc83 | 1237 | int hits = samples; |
07800601 | 1238 | |
d8f66248 | 1239 | perf_session__mmap_read(session); |
07800601 | 1240 | |
2debbc83 | 1241 | if (hits == samples) |
07800601 IM |
1242 | ret = poll(event_array, nr_poll, 100); |
1243 | } | |
1244 | ||
1245 | return 0; | |
1246 | } | |
b456bae0 IM |
1247 | |
1248 | static const char * const top_usage[] = { | |
1249 | "perf top [<options>]", | |
1250 | NULL | |
1251 | }; | |
1252 | ||
b456bae0 IM |
1253 | static const struct option options[] = { |
1254 | OPT_CALLBACK('e', "event", NULL, "event", | |
86847b62 TG |
1255 | "event selector. use 'perf list' to list available events", |
1256 | parse_events), | |
b456bae0 IM |
1257 | OPT_INTEGER('c', "count", &default_interval, |
1258 | "event period to sample"), | |
1259 | OPT_INTEGER('p', "pid", &target_pid, | |
1260 | "profile events on existing pid"), | |
1261 | OPT_BOOLEAN('a', "all-cpus", &system_wide, | |
1262 | "system-wide collection from all CPUs"), | |
1263 | OPT_INTEGER('C', "CPU", &profile_cpu, | |
1264 | "CPU to profile on"), | |
b32d133a ACM |
1265 | OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name, |
1266 | "file", "vmlinux pathname"), | |
8ffcda17 ACM |
1267 | OPT_BOOLEAN('K', "hide_kernel_symbols", &hide_kernel_symbols, |
1268 | "hide kernel symbols"), | |
b456bae0 IM |
1269 | OPT_INTEGER('m', "mmap-pages", &mmap_pages, |
1270 | "number of mmap data pages"), | |
1271 | OPT_INTEGER('r', "realtime", &realtime_prio, | |
1272 | "collect data with this RT SCHED_FIFO priority"), | |
db20c003 | 1273 | OPT_INTEGER('d', "delay", &delay_secs, |
b456bae0 IM |
1274 | "number of seconds to delay between refreshes"), |
1275 | OPT_BOOLEAN('D', "dump-symtab", &dump_symtab, | |
1276 | "dump the symbol table used for profiling"), | |
6e53cdf1 | 1277 | OPT_INTEGER('f', "count-filter", &count_filter, |
b456bae0 IM |
1278 | "only display functions with more events than this"), |
1279 | OPT_BOOLEAN('g', "group", &group, | |
1280 | "put the counters into a counter group"), | |
0fdc7e67 MG |
1281 | OPT_BOOLEAN('i', "inherit", &inherit, |
1282 | "child tasks inherit counters"), | |
923c42c1 | 1283 | OPT_STRING('s', "sym-annotate", &sym_filter, "symbol name", |
6cff0e8d | 1284 | "symbol to annotate"), |
1f208ea6 | 1285 | OPT_BOOLEAN('z', "zero", &zero, |
b456bae0 | 1286 | "zero history across updates"), |
6e53cdf1 | 1287 | OPT_INTEGER('F', "freq", &freq, |
b456bae0 | 1288 | "profile at this frequency"), |
6e53cdf1 IM |
1289 | OPT_INTEGER('E', "entries", &print_entries, |
1290 | "display this many functions"), | |
8ffcda17 ACM |
1291 | OPT_BOOLEAN('U', "hide_user_symbols", &hide_user_symbols, |
1292 | "hide user symbols"), | |
3da297a6 IM |
1293 | OPT_BOOLEAN('v', "verbose", &verbose, |
1294 | "be more verbose (show counter open errors, etc)"), | |
b456bae0 IM |
1295 | OPT_END() |
1296 | }; | |
1297 | ||
f37a291c | 1298 | int cmd_top(int argc, const char **argv, const char *prefix __used) |
b456bae0 | 1299 | { |
b32d133a | 1300 | int counter; |
b456bae0 IM |
1301 | |
1302 | page_size = sysconf(_SC_PAGE_SIZE); | |
1303 | ||
b456bae0 IM |
1304 | argc = parse_options(argc, argv, options, top_usage, 0); |
1305 | if (argc) | |
1306 | usage_with_options(top_usage, options); | |
1307 | ||
b456bae0 IM |
1308 | /* CPU and PID are mutually exclusive */ |
1309 | if (target_pid != -1 && profile_cpu != -1) { | |
1310 | printf("WARNING: PID switch overriding CPU\n"); | |
1311 | sleep(1); | |
1312 | profile_cpu = -1; | |
1313 | } | |
1314 | ||
a21ca2ca | 1315 | if (!nr_counters) |
b456bae0 | 1316 | nr_counters = 1; |
b456bae0 | 1317 | |
b32d133a ACM |
1318 | symbol_conf.priv_size = (sizeof(struct sym_entry) + |
1319 | (nr_counters + 1) * sizeof(unsigned long)); | |
6cff0e8d KS |
1320 | |
1321 | symbol_conf.try_vmlinux_path = (symbol_conf.vmlinux_name == NULL); | |
75be6cf4 | 1322 | if (symbol__init() < 0) |
b32d133a | 1323 | return -1; |
5a8e5a30 | 1324 | |
2f335a02 FW |
1325 | if (delay_secs < 1) |
1326 | delay_secs = 1; | |
1327 | ||
7e4ff9e3 MG |
1328 | /* |
1329 | * User specified count overrides default frequency. | |
1330 | */ | |
1331 | if (default_interval) | |
1332 | freq = 0; | |
1333 | else if (freq) { | |
1334 | default_interval = freq; | |
1335 | } else { | |
1336 | fprintf(stderr, "frequency and count are zero, aborting\n"); | |
1337 | exit(EXIT_FAILURE); | |
1338 | } | |
1339 | ||
a21ca2ca IM |
1340 | /* |
1341 | * Fill in the ones not specifically initialized via -c: | |
1342 | */ | |
b456bae0 | 1343 | for (counter = 0; counter < nr_counters; counter++) { |
a21ca2ca | 1344 | if (attrs[counter].sample_period) |
b456bae0 IM |
1345 | continue; |
1346 | ||
a21ca2ca | 1347 | attrs[counter].sample_period = default_interval; |
b456bae0 IM |
1348 | } |
1349 | ||
1350 | nr_cpus = sysconf(_SC_NPROCESSORS_ONLN); | |
1351 | assert(nr_cpus <= MAX_NR_CPUS); | |
1352 | assert(nr_cpus >= 0); | |
1353 | ||
1354 | if (target_pid != -1 || profile_cpu != -1) | |
1355 | nr_cpus = 1; | |
1356 | ||
13cc5079 | 1357 | get_term_dimensions(&winsize); |
3b6ed988 | 1358 | if (print_entries == 0) { |
13cc5079 | 1359 | update_print_entries(&winsize); |
3b6ed988 ACM |
1360 | signal(SIGWINCH, sig_winch_handler); |
1361 | } | |
1362 | ||
b456bae0 IM |
1363 | return __cmd_top(); |
1364 | } |