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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; | |
97 | static int sym_pcnt_filter = 5; | |
98 | static int sym_counter = 0; | |
99 | static int display_weighted = -1; | |
923c42c1 | 100 | |
07800601 IM |
101 | /* |
102 | * Symbols | |
103 | */ | |
104 | ||
b269876c ACM |
105 | struct sym_entry_source { |
106 | struct source_line *source; | |
107 | struct source_line *lines; | |
108 | struct source_line **lines_tail; | |
109 | pthread_mutex_t lock; | |
110 | }; | |
111 | ||
07800601 | 112 | struct sym_entry { |
de04687f ACM |
113 | struct rb_node rb_node; |
114 | struct list_head node; | |
c44613a4 ACM |
115 | unsigned long snap_count; |
116 | double weight; | |
07800601 | 117 | int skip; |
13cc5079 | 118 | u16 name_len; |
8ffcda17 | 119 | u8 origin; |
439d473b | 120 | struct map *map; |
b269876c | 121 | struct sym_entry_source *src; |
5a8e5a30 | 122 | unsigned long count[0]; |
07800601 IM |
123 | }; |
124 | ||
923c42c1 MG |
125 | /* |
126 | * Source functions | |
127 | */ | |
128 | ||
51a472de ACM |
129 | static inline struct symbol *sym_entry__symbol(struct sym_entry *self) |
130 | { | |
b32d133a | 131 | return ((void *)self) + symbol_conf.priv_size; |
51a472de ACM |
132 | } |
133 | ||
13cc5079 | 134 | static void get_term_dimensions(struct winsize *ws) |
3b6ed988 | 135 | { |
13cc5079 ACM |
136 | char *s = getenv("LINES"); |
137 | ||
138 | if (s != NULL) { | |
139 | ws->ws_row = atoi(s); | |
140 | s = getenv("COLUMNS"); | |
141 | if (s != NULL) { | |
142 | ws->ws_col = atoi(s); | |
143 | if (ws->ws_row && ws->ws_col) | |
144 | return; | |
145 | } | |
3b6ed988 | 146 | } |
13cc5079 ACM |
147 | #ifdef TIOCGWINSZ |
148 | if (ioctl(1, TIOCGWINSZ, ws) == 0 && | |
149 | ws->ws_row && ws->ws_col) | |
150 | return; | |
3b6ed988 | 151 | #endif |
13cc5079 ACM |
152 | ws->ws_row = 25; |
153 | ws->ws_col = 80; | |
3b6ed988 ACM |
154 | } |
155 | ||
13cc5079 | 156 | static void update_print_entries(struct winsize *ws) |
3b6ed988 | 157 | { |
13cc5079 ACM |
158 | print_entries = ws->ws_row; |
159 | ||
3b6ed988 ACM |
160 | if (print_entries > 9) |
161 | print_entries -= 9; | |
162 | } | |
163 | ||
164 | static void sig_winch_handler(int sig __used) | |
165 | { | |
13cc5079 ACM |
166 | get_term_dimensions(&winsize); |
167 | update_print_entries(&winsize); | |
3b6ed988 ACM |
168 | } |
169 | ||
923c42c1 MG |
170 | static void parse_source(struct sym_entry *syme) |
171 | { | |
172 | struct symbol *sym; | |
b269876c | 173 | struct sym_entry_source *source; |
439d473b | 174 | struct map *map; |
923c42c1 | 175 | FILE *file; |
83a0944f | 176 | char command[PATH_MAX*2]; |
439d473b ACM |
177 | const char *path; |
178 | u64 len; | |
923c42c1 MG |
179 | |
180 | if (!syme) | |
181 | return; | |
182 | ||
b269876c | 183 | if (syme->src == NULL) { |
36479484 | 184 | syme->src = zalloc(sizeof(*source)); |
b269876c ACM |
185 | if (syme->src == NULL) |
186 | return; | |
187 | pthread_mutex_init(&syme->src->lock, NULL); | |
188 | } | |
189 | ||
190 | source = syme->src; | |
191 | ||
192 | if (source->lines) { | |
193 | pthread_mutex_lock(&source->lock); | |
923c42c1 MG |
194 | goto out_assign; |
195 | } | |
196 | ||
51a472de | 197 | sym = sym_entry__symbol(syme); |
439d473b ACM |
198 | map = syme->map; |
199 | path = map->dso->long_name; | |
923c42c1 | 200 | |
923c42c1 MG |
201 | len = sym->end - sym->start; |
202 | ||
439d473b ACM |
203 | sprintf(command, |
204 | "objdump --start-address=0x%016Lx " | |
205 | "--stop-address=0x%016Lx -dS %s", | |
c88e4bf6 ACM |
206 | map->unmap_ip(map, sym->start), |
207 | map->unmap_ip(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; | |
218 | char *c; | |
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 MG |
236 | |
237 | if (strlen(src->line)>8 && src->line[8] == ':') { | |
238 | src->eip = strtoull(src->line, NULL, 16); | |
c88e4bf6 | 239 | src->eip = map->unmap_ip(map, src->eip); |
923c42c1 MG |
240 | } |
241 | if (strlen(src->line)>8 && src->line[16] == ':') { | |
242 | src->eip = strtoull(src->line, NULL, 16); | |
c88e4bf6 | 243 | src->eip = map->unmap_ip(map, src->eip); |
923c42c1 MG |
244 | } |
245 | } | |
246 | pclose(file); | |
247 | out_assign: | |
248 | sym_filter_entry = syme; | |
b269876c | 249 | pthread_mutex_unlock(&source->lock); |
923c42c1 MG |
250 | } |
251 | ||
252 | static void __zero_source_counters(struct sym_entry *syme) | |
253 | { | |
254 | int i; | |
255 | struct source_line *line; | |
256 | ||
b269876c | 257 | line = syme->src->lines; |
923c42c1 MG |
258 | while (line) { |
259 | for (i = 0; i < nr_counters; i++) | |
260 | line->count[i] = 0; | |
261 | line = line->next; | |
262 | } | |
263 | } | |
264 | ||
265 | static void record_precise_ip(struct sym_entry *syme, int counter, u64 ip) | |
266 | { | |
267 | struct source_line *line; | |
268 | ||
269 | if (syme != sym_filter_entry) | |
270 | return; | |
271 | ||
b269876c | 272 | if (pthread_mutex_trylock(&syme->src->lock)) |
923c42c1 MG |
273 | return; |
274 | ||
b269876c | 275 | if (syme->src == NULL || syme->src->source == NULL) |
923c42c1 MG |
276 | goto out_unlock; |
277 | ||
b269876c | 278 | for (line = syme->src->lines; line; line = line->next) { |
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 | ||
290 | static void lookup_sym_source(struct sym_entry *syme) | |
291 | { | |
51a472de | 292 | struct symbol *symbol = sym_entry__symbol(syme); |
923c42c1 MG |
293 | struct source_line *line; |
294 | char pattern[PATH_MAX]; | |
923c42c1 MG |
295 | |
296 | sprintf(pattern, "<%s>:", symbol->name); | |
297 | ||
b269876c ACM |
298 | pthread_mutex_lock(&syme->src->lock); |
299 | for (line = syme->src->lines; line; line = line->next) { | |
923c42c1 | 300 | if (strstr(line->line, pattern)) { |
b269876c | 301 | syme->src->source = line; |
923c42c1 MG |
302 | break; |
303 | } | |
304 | } | |
b269876c | 305 | pthread_mutex_unlock(&syme->src->lock); |
923c42c1 MG |
306 | } |
307 | ||
308 | static void show_lines(struct source_line *queue, int count, int total) | |
309 | { | |
310 | int i; | |
311 | struct source_line *line; | |
312 | ||
313 | line = queue; | |
314 | for (i = 0; i < count; i++) { | |
315 | float pcnt = 100.0*(float)line->count[sym_counter]/(float)total; | |
316 | ||
317 | printf("%8li %4.1f%%\t%s\n", line->count[sym_counter], pcnt, line->line); | |
318 | line = line->next; | |
319 | } | |
320 | } | |
321 | ||
322 | #define TRACE_COUNT 3 | |
323 | ||
324 | static void show_details(struct sym_entry *syme) | |
325 | { | |
326 | struct symbol *symbol; | |
327 | struct source_line *line; | |
328 | struct source_line *line_queue = NULL; | |
329 | int displayed = 0; | |
330 | int line_queue_count = 0, total = 0, more = 0; | |
331 | ||
332 | if (!syme) | |
333 | return; | |
334 | ||
b269876c | 335 | if (!syme->src->source) |
923c42c1 MG |
336 | lookup_sym_source(syme); |
337 | ||
b269876c | 338 | if (!syme->src->source) |
923c42c1 MG |
339 | return; |
340 | ||
51a472de | 341 | symbol = sym_entry__symbol(syme); |
923c42c1 MG |
342 | printf("Showing %s for %s\n", event_name(sym_counter), symbol->name); |
343 | printf(" Events Pcnt (>=%d%%)\n", sym_pcnt_filter); | |
344 | ||
b269876c ACM |
345 | pthread_mutex_lock(&syme->src->lock); |
346 | line = syme->src->source; | |
923c42c1 MG |
347 | while (line) { |
348 | total += line->count[sym_counter]; | |
349 | line = line->next; | |
350 | } | |
351 | ||
b269876c | 352 | line = syme->src->source; |
923c42c1 MG |
353 | while (line) { |
354 | float pcnt = 0.0; | |
355 | ||
356 | if (!line_queue_count) | |
357 | line_queue = line; | |
358 | line_queue_count++; | |
359 | ||
360 | if (line->count[sym_counter]) | |
361 | pcnt = 100.0 * line->count[sym_counter] / (float)total; | |
362 | if (pcnt >= (float)sym_pcnt_filter) { | |
363 | if (displayed <= print_entries) | |
364 | show_lines(line_queue, line_queue_count, total); | |
365 | else more++; | |
366 | displayed += line_queue_count; | |
367 | line_queue_count = 0; | |
368 | line_queue = NULL; | |
369 | } else if (line_queue_count > TRACE_COUNT) { | |
370 | line_queue = line_queue->next; | |
371 | line_queue_count--; | |
372 | } | |
373 | ||
374 | line->count[sym_counter] = zero ? 0 : line->count[sym_counter] * 7 / 8; | |
375 | line = line->next; | |
376 | } | |
b269876c | 377 | pthread_mutex_unlock(&syme->src->lock); |
923c42c1 MG |
378 | if (more) |
379 | printf("%d lines not displayed, maybe increase display entries [e]\n", more); | |
380 | } | |
07800601 | 381 | |
de04687f | 382 | /* |
5b2bb75a | 383 | * Symbols will be added here in event__process_sample and will get out |
de04687f ACM |
384 | * after decayed. |
385 | */ | |
386 | static LIST_HEAD(active_symbols); | |
c44613a4 | 387 | static pthread_mutex_t active_symbols_lock = PTHREAD_MUTEX_INITIALIZER; |
07800601 | 388 | |
07800601 IM |
389 | /* |
390 | * Ordering weight: count-1 * count-2 * ... / count-n | |
391 | */ | |
392 | static double sym_weight(const struct sym_entry *sym) | |
393 | { | |
c44613a4 | 394 | double weight = sym->snap_count; |
07800601 IM |
395 | int counter; |
396 | ||
46ab9764 MG |
397 | if (!display_weighted) |
398 | return weight; | |
399 | ||
07800601 IM |
400 | for (counter = 1; counter < nr_counters-1; counter++) |
401 | weight *= sym->count[counter]; | |
402 | ||
403 | weight /= (sym->count[counter] + 1); | |
404 | ||
405 | return weight; | |
406 | } | |
407 | ||
2debbc83 IM |
408 | static long samples; |
409 | static long userspace_samples; | |
07800601 IM |
410 | static const char CONSOLE_CLEAR[] = "\e[H\e[2J"; |
411 | ||
c44613a4 | 412 | static void __list_insert_active_sym(struct sym_entry *syme) |
de04687f ACM |
413 | { |
414 | list_add(&syme->node, &active_symbols); | |
415 | } | |
416 | ||
c44613a4 ACM |
417 | static void list_remove_active_sym(struct sym_entry *syme) |
418 | { | |
419 | pthread_mutex_lock(&active_symbols_lock); | |
420 | list_del_init(&syme->node); | |
421 | pthread_mutex_unlock(&active_symbols_lock); | |
422 | } | |
423 | ||
de04687f ACM |
424 | static void rb_insert_active_sym(struct rb_root *tree, struct sym_entry *se) |
425 | { | |
426 | struct rb_node **p = &tree->rb_node; | |
427 | struct rb_node *parent = NULL; | |
428 | struct sym_entry *iter; | |
429 | ||
430 | while (*p != NULL) { | |
431 | parent = *p; | |
432 | iter = rb_entry(parent, struct sym_entry, rb_node); | |
433 | ||
c44613a4 | 434 | if (se->weight > iter->weight) |
de04687f ACM |
435 | p = &(*p)->rb_left; |
436 | else | |
437 | p = &(*p)->rb_right; | |
438 | } | |
439 | ||
440 | rb_link_node(&se->rb_node, parent, p); | |
441 | rb_insert_color(&se->rb_node, tree); | |
442 | } | |
07800601 IM |
443 | |
444 | static void print_sym_table(void) | |
445 | { | |
233f0b95 | 446 | int printed = 0, j; |
46ab9764 | 447 | int counter, snap = !display_weighted ? sym_counter : 0; |
2debbc83 IM |
448 | float samples_per_sec = samples/delay_secs; |
449 | float ksamples_per_sec = (samples-userspace_samples)/delay_secs; | |
450 | float sum_ksamples = 0.0; | |
de04687f ACM |
451 | struct sym_entry *syme, *n; |
452 | struct rb_root tmp = RB_ROOT; | |
453 | struct rb_node *nd; | |
7cc017ed | 454 | int sym_width = 0, dso_width = 0, max_dso_width; |
13cc5079 | 455 | const int win_width = winsize.ws_col - 1; |
07800601 | 456 | |
2debbc83 | 457 | samples = userspace_samples = 0; |
07800601 | 458 | |
de04687f | 459 | /* Sort the active symbols */ |
c44613a4 ACM |
460 | pthread_mutex_lock(&active_symbols_lock); |
461 | syme = list_entry(active_symbols.next, struct sym_entry, node); | |
462 | pthread_mutex_unlock(&active_symbols_lock); | |
463 | ||
464 | list_for_each_entry_safe_from(syme, n, &active_symbols, node) { | |
46ab9764 | 465 | syme->snap_count = syme->count[snap]; |
c44613a4 | 466 | if (syme->snap_count != 0) { |
13cc5079 | 467 | |
8ffcda17 ACM |
468 | if ((hide_user_symbols && |
469 | syme->origin == PERF_RECORD_MISC_USER) || | |
470 | (hide_kernel_symbols && | |
471 | syme->origin == PERF_RECORD_MISC_KERNEL)) { | |
472 | list_remove_active_sym(syme); | |
473 | continue; | |
474 | } | |
c44613a4 | 475 | syme->weight = sym_weight(syme); |
de04687f | 476 | rb_insert_active_sym(&tmp, syme); |
2debbc83 | 477 | sum_ksamples += syme->snap_count; |
d94b9430 MG |
478 | |
479 | for (j = 0; j < nr_counters; j++) | |
de04687f ACM |
480 | syme->count[j] = zero ? 0 : syme->count[j] * 7 / 8; |
481 | } else | |
c44613a4 | 482 | list_remove_active_sym(syme); |
d94b9430 MG |
483 | } |
484 | ||
0f5486b5 | 485 | puts(CONSOLE_CLEAR); |
07800601 | 486 | |
13cc5079 | 487 | printf("%-*.*s\n", win_width, win_width, graph_dotted_line); |
f2521b6e | 488 | printf( " PerfTop:%8.0f irqs/sec kernel:%4.1f%% [", |
2debbc83 IM |
489 | samples_per_sec, |
490 | 100.0 - (100.0*((samples_per_sec-ksamples_per_sec)/samples_per_sec))); | |
07800601 | 491 | |
46ab9764 | 492 | if (nr_counters == 1 || !display_weighted) { |
9cffa8d5 | 493 | printf("%Ld", (u64)attrs[0].sample_period); |
cf1f4574 IM |
494 | if (freq) |
495 | printf("Hz "); | |
496 | else | |
497 | printf(" "); | |
498 | } | |
07800601 | 499 | |
46ab9764 MG |
500 | if (!display_weighted) |
501 | printf("%s", event_name(sym_counter)); | |
502 | else for (counter = 0; counter < nr_counters; counter++) { | |
07800601 IM |
503 | if (counter) |
504 | printf("/"); | |
505 | ||
506 | printf("%s", event_name(counter)); | |
507 | } | |
508 | ||
509 | printf( "], "); | |
510 | ||
b456bae0 IM |
511 | if (target_pid != -1) |
512 | printf(" (target_pid: %d", target_pid); | |
07800601 IM |
513 | else |
514 | printf(" (all"); | |
515 | ||
516 | if (profile_cpu != -1) | |
517 | printf(", cpu: %d)\n", profile_cpu); | |
518 | else { | |
b456bae0 | 519 | if (target_pid != -1) |
07800601 IM |
520 | printf(")\n"); |
521 | else | |
522 | printf(", %d CPUs)\n", nr_cpus); | |
523 | } | |
524 | ||
1a105f74 | 525 | printf("%-*.*s\n", win_width, win_width, graph_dotted_line); |
07800601 | 526 | |
923c42c1 MG |
527 | if (sym_filter_entry) { |
528 | show_details(sym_filter_entry); | |
529 | return; | |
530 | } | |
531 | ||
13cc5079 ACM |
532 | /* |
533 | * Find the longest symbol name that will be displayed | |
534 | */ | |
535 | for (nd = rb_first(&tmp); nd; nd = rb_next(nd)) { | |
536 | syme = rb_entry(nd, struct sym_entry, rb_node); | |
537 | if (++printed > print_entries || | |
538 | (int)syme->snap_count < count_filter) | |
539 | continue; | |
540 | ||
1a105f74 ACM |
541 | if (syme->map->dso->long_name_len > dso_width) |
542 | dso_width = syme->map->dso->long_name_len; | |
543 | ||
13cc5079 ACM |
544 | if (syme->name_len > sym_width) |
545 | sym_width = syme->name_len; | |
546 | } | |
547 | ||
548 | printed = 0; | |
549 | ||
7cc017ed ACM |
550 | max_dso_width = winsize.ws_col - sym_width - 29; |
551 | if (dso_width > max_dso_width) | |
552 | dso_width = max_dso_width; | |
553 | putchar('\n'); | |
07800601 | 554 | if (nr_counters == 1) |
5b2bb75a | 555 | printf(" samples pcnt"); |
07800601 | 556 | else |
5b2bb75a | 557 | printf(" weight samples pcnt"); |
07800601 | 558 | |
7ced156b ACM |
559 | if (verbose) |
560 | printf(" RIP "); | |
7cc017ed | 561 | printf(" %-*.*s DSO\n", sym_width, sym_width, "function"); |
5b2bb75a | 562 | printf(" %s _______ _____", |
7ced156b ACM |
563 | nr_counters == 1 ? " " : "______"); |
564 | if (verbose) | |
5b2bb75a | 565 | printf(" ________________"); |
1a105f74 | 566 | printf(" %-*.*s", sym_width, sym_width, graph_line); |
7cc017ed | 567 | printf(" %-*.*s", dso_width, dso_width, graph_line); |
1a105f74 | 568 | puts("\n"); |
07800601 | 569 | |
de04687f | 570 | for (nd = rb_first(&tmp); nd; nd = rb_next(nd)) { |
83a0944f | 571 | struct symbol *sym; |
8fc0321f | 572 | double pcnt; |
d94b9430 | 573 | |
83a0944f | 574 | syme = rb_entry(nd, struct sym_entry, rb_node); |
51a472de | 575 | sym = sym_entry__symbol(syme); |
83a0944f | 576 | |
923c42c1 | 577 | if (++printed > print_entries || (int)syme->snap_count < count_filter) |
c44613a4 | 578 | continue; |
d94b9430 | 579 | |
2debbc83 IM |
580 | pcnt = 100.0 - (100.0 * ((sum_ksamples - syme->snap_count) / |
581 | sum_ksamples)); | |
d94b9430 | 582 | |
46ab9764 | 583 | if (nr_counters == 1 || !display_weighted) |
5b2bb75a | 584 | printf("%20.2f ", syme->weight); |
d94b9430 | 585 | else |
5b2bb75a | 586 | printf("%9.1f %10ld ", syme->weight, syme->snap_count); |
8fc0321f | 587 | |
1e11fd82 | 588 | percent_color_fprintf(stdout, "%4.1f%%", pcnt); |
7ced156b | 589 | if (verbose) |
5b2bb75a | 590 | printf(" %016llx", sym->start); |
13cc5079 | 591 | printf(" %-*.*s", sym_width, sym_width, sym->name); |
7cc017ed ACM |
592 | printf(" %-*.*s\n", dso_width, dso_width, |
593 | dso_width >= syme->map->dso->long_name_len ? | |
594 | syme->map->dso->long_name : | |
595 | syme->map->dso->short_name); | |
07800601 | 596 | } |
07800601 IM |
597 | } |
598 | ||
923c42c1 MG |
599 | static void prompt_integer(int *target, const char *msg) |
600 | { | |
601 | char *buf = malloc(0), *p; | |
602 | size_t dummy = 0; | |
603 | int tmp; | |
604 | ||
605 | fprintf(stdout, "\n%s: ", msg); | |
606 | if (getline(&buf, &dummy, stdin) < 0) | |
607 | return; | |
608 | ||
609 | p = strchr(buf, '\n'); | |
610 | if (p) | |
611 | *p = 0; | |
612 | ||
613 | p = buf; | |
614 | while(*p) { | |
615 | if (!isdigit(*p)) | |
616 | goto out_free; | |
617 | p++; | |
618 | } | |
619 | tmp = strtoul(buf, NULL, 10); | |
620 | *target = tmp; | |
621 | out_free: | |
622 | free(buf); | |
623 | } | |
624 | ||
625 | static void prompt_percent(int *target, const char *msg) | |
626 | { | |
627 | int tmp = 0; | |
628 | ||
629 | prompt_integer(&tmp, msg); | |
630 | if (tmp >= 0 && tmp <= 100) | |
631 | *target = tmp; | |
632 | } | |
633 | ||
634 | static void prompt_symbol(struct sym_entry **target, const char *msg) | |
635 | { | |
636 | char *buf = malloc(0), *p; | |
637 | struct sym_entry *syme = *target, *n, *found = NULL; | |
638 | size_t dummy = 0; | |
639 | ||
640 | /* zero counters of active symbol */ | |
641 | if (syme) { | |
b269876c | 642 | pthread_mutex_lock(&syme->src->lock); |
923c42c1 MG |
643 | __zero_source_counters(syme); |
644 | *target = NULL; | |
b269876c | 645 | pthread_mutex_unlock(&syme->src->lock); |
923c42c1 MG |
646 | } |
647 | ||
648 | fprintf(stdout, "\n%s: ", msg); | |
649 | if (getline(&buf, &dummy, stdin) < 0) | |
650 | goto out_free; | |
651 | ||
652 | p = strchr(buf, '\n'); | |
653 | if (p) | |
654 | *p = 0; | |
655 | ||
656 | pthread_mutex_lock(&active_symbols_lock); | |
657 | syme = list_entry(active_symbols.next, struct sym_entry, node); | |
658 | pthread_mutex_unlock(&active_symbols_lock); | |
659 | ||
660 | list_for_each_entry_safe_from(syme, n, &active_symbols, node) { | |
51a472de | 661 | struct symbol *sym = sym_entry__symbol(syme); |
923c42c1 MG |
662 | |
663 | if (!strcmp(buf, sym->name)) { | |
664 | found = syme; | |
665 | break; | |
666 | } | |
667 | } | |
668 | ||
669 | if (!found) { | |
670 | fprintf(stderr, "Sorry, %s is not active.\n", sym_filter); | |
671 | sleep(1); | |
672 | return; | |
673 | } else | |
674 | parse_source(found); | |
675 | ||
676 | out_free: | |
677 | free(buf); | |
678 | } | |
679 | ||
091bd2e9 | 680 | static void print_mapped_keys(void) |
923c42c1 | 681 | { |
091bd2e9 MG |
682 | char *name = NULL; |
683 | ||
684 | if (sym_filter_entry) { | |
51a472de | 685 | struct symbol *sym = sym_entry__symbol(sym_filter_entry); |
091bd2e9 MG |
686 | name = sym->name; |
687 | } | |
688 | ||
689 | fprintf(stdout, "\nMapped keys:\n"); | |
690 | fprintf(stdout, "\t[d] display refresh delay. \t(%d)\n", delay_secs); | |
691 | fprintf(stdout, "\t[e] display entries (lines). \t(%d)\n", print_entries); | |
692 | ||
693 | if (nr_counters > 1) | |
694 | fprintf(stdout, "\t[E] active event counter. \t(%s)\n", event_name(sym_counter)); | |
695 | ||
696 | fprintf(stdout, "\t[f] profile display filter (count). \t(%d)\n", count_filter); | |
697 | ||
b32d133a | 698 | if (symbol_conf.vmlinux_name) { |
091bd2e9 MG |
699 | fprintf(stdout, "\t[F] annotate display filter (percent). \t(%d%%)\n", sym_pcnt_filter); |
700 | fprintf(stdout, "\t[s] annotate symbol. \t(%s)\n", name?: "NULL"); | |
701 | fprintf(stdout, "\t[S] stop annotation.\n"); | |
702 | } | |
703 | ||
704 | if (nr_counters > 1) | |
705 | fprintf(stdout, "\t[w] toggle display weighted/count[E]r. \t(%d)\n", display_weighted ? 1 : 0); | |
706 | ||
8ffcda17 ACM |
707 | fprintf(stdout, |
708 | "\t[K] hide kernel_symbols symbols. \t(%s)\n", | |
709 | hide_kernel_symbols ? "yes" : "no"); | |
710 | fprintf(stdout, | |
711 | "\t[U] hide user symbols. \t(%s)\n", | |
712 | hide_user_symbols ? "yes" : "no"); | |
46ab9764 | 713 | fprintf(stdout, "\t[z] toggle sample zeroing. \t(%d)\n", zero ? 1 : 0); |
091bd2e9 MG |
714 | fprintf(stdout, "\t[qQ] quit.\n"); |
715 | } | |
716 | ||
717 | static int key_mapped(int c) | |
718 | { | |
719 | switch (c) { | |
720 | case 'd': | |
721 | case 'e': | |
722 | case 'f': | |
723 | case 'z': | |
724 | case 'q': | |
725 | case 'Q': | |
8ffcda17 ACM |
726 | case 'K': |
727 | case 'U': | |
091bd2e9 MG |
728 | return 1; |
729 | case 'E': | |
730 | case 'w': | |
731 | return nr_counters > 1 ? 1 : 0; | |
732 | case 'F': | |
733 | case 's': | |
734 | case 'S': | |
b32d133a | 735 | return symbol_conf.vmlinux_name ? 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; |
923c42c1 MG |
913 | if (!sym_filter_entry && sym_filter && !strcmp(name, sym_filter)) |
914 | sym_filter_entry = syme; | |
915 | ||
2ab52083 AB |
916 | for (i = 0; skip_symbols[i]; i++) { |
917 | if (!strcmp(skip_symbols[i], name)) { | |
918 | syme->skip = 1; | |
919 | break; | |
920 | } | |
921 | } | |
07800601 | 922 | |
13cc5079 ACM |
923 | if (!syme->skip) |
924 | syme->name_len = strlen(sym->name); | |
925 | ||
07800601 IM |
926 | return 0; |
927 | } | |
928 | ||
b3165f41 ACM |
929 | static void event__process_sample(const event_t *self, |
930 | struct perf_session *session, int counter) | |
07800601 | 931 | { |
5b2bb75a | 932 | u64 ip = self->ip.ip; |
5b2bb75a | 933 | struct sym_entry *syme; |
1ed091c4 | 934 | struct addr_location al; |
8ffcda17 | 935 | u8 origin = self->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; |
5b2bb75a | 936 | |
8ffcda17 | 937 | switch (origin) { |
1ed091c4 | 938 | case PERF_RECORD_MISC_USER: |
8ffcda17 ACM |
939 | if (hide_user_symbols) |
940 | return; | |
1ed091c4 | 941 | break; |
5b2bb75a | 942 | case PERF_RECORD_MISC_KERNEL: |
8ffcda17 ACM |
943 | if (hide_kernel_symbols) |
944 | return; | |
5b2bb75a ACM |
945 | break; |
946 | default: | |
947 | return; | |
948 | } | |
949 | ||
b3165f41 | 950 | if (event__preprocess_sample(self, session, &al, symbol_filter) < 0 || |
c410a338 | 951 | al.sym == NULL || al.filtered) |
1ed091c4 | 952 | return; |
07800601 | 953 | |
1ed091c4 | 954 | syme = symbol__priv(al.sym); |
5b2bb75a ACM |
955 | if (!syme->skip) { |
956 | syme->count[counter]++; | |
8ffcda17 | 957 | syme->origin = origin; |
5b2bb75a ACM |
958 | record_precise_ip(syme, counter, ip); |
959 | pthread_mutex_lock(&active_symbols_lock); | |
960 | if (list_empty(&syme->node) || !syme->node.next) | |
961 | __list_insert_active_sym(syme); | |
962 | pthread_mutex_unlock(&active_symbols_lock); | |
1ed091c4 ACM |
963 | if (origin == PERF_RECORD_MISC_USER) |
964 | ++userspace_samples; | |
5b2bb75a | 965 | ++samples; |
5b2bb75a | 966 | } |
07800601 IM |
967 | } |
968 | ||
d8f66248 | 969 | static int event__process(event_t *event, struct perf_session *session) |
5b2bb75a ACM |
970 | { |
971 | switch (event->header.type) { | |
972 | case PERF_RECORD_COMM: | |
d8f66248 | 973 | event__process_comm(event, session); |
5b2bb75a ACM |
974 | break; |
975 | case PERF_RECORD_MMAP: | |
d8f66248 | 976 | event__process_mmap(event, session); |
5b2bb75a ACM |
977 | break; |
978 | default: | |
979 | break; | |
07800601 IM |
980 | } |
981 | ||
5b2bb75a | 982 | return 0; |
07800601 IM |
983 | } |
984 | ||
07800601 | 985 | struct mmap_data { |
a21ca2ca IM |
986 | int counter; |
987 | void *base; | |
f37a291c | 988 | int mask; |
a21ca2ca | 989 | unsigned int prev; |
07800601 IM |
990 | }; |
991 | ||
992 | static unsigned int mmap_read_head(struct mmap_data *md) | |
993 | { | |
cdd6c482 | 994 | struct perf_event_mmap_page *pc = md->base; |
07800601 IM |
995 | int head; |
996 | ||
997 | head = pc->data_head; | |
998 | rmb(); | |
999 | ||
1000 | return head; | |
1001 | } | |
1002 | ||
d8f66248 ACM |
1003 | static void perf_session__mmap_read_counter(struct perf_session *self, |
1004 | struct mmap_data *md) | |
07800601 IM |
1005 | { |
1006 | unsigned int head = mmap_read_head(md); | |
1007 | unsigned int old = md->prev; | |
1008 | unsigned char *data = md->base + page_size; | |
1009 | int diff; | |
1010 | ||
07800601 IM |
1011 | /* |
1012 | * If we're further behind than half the buffer, there's a chance | |
2debbc83 | 1013 | * the writer will bite our tail and mess up the samples under us. |
07800601 IM |
1014 | * |
1015 | * If we somehow ended up ahead of the head, we got messed up. | |
1016 | * | |
1017 | * In either case, truncate and restart at head. | |
1018 | */ | |
1019 | diff = head - old; | |
1020 | if (diff > md->mask / 2 || diff < 0) { | |
f4f0b418 | 1021 | fprintf(stderr, "WARNING: failed to keep up with mmap data.\n"); |
07800601 IM |
1022 | |
1023 | /* | |
1024 | * head points to a known good entry, start there. | |
1025 | */ | |
1026 | old = head; | |
1027 | } | |
1028 | ||
07800601 | 1029 | for (; old != head;) { |
07800601 IM |
1030 | event_t *event = (event_t *)&data[old & md->mask]; |
1031 | ||
1032 | event_t event_copy; | |
1033 | ||
6f06ccbc | 1034 | size_t size = event->header.size; |
07800601 IM |
1035 | |
1036 | /* | |
1037 | * Event straddles the mmap boundary -- header should always | |
1038 | * be inside due to u64 alignment of output. | |
1039 | */ | |
1040 | if ((old & md->mask) + size != ((old + size) & md->mask)) { | |
1041 | unsigned int offset = old; | |
1042 | unsigned int len = min(sizeof(*event), size), cpy; | |
1043 | void *dst = &event_copy; | |
1044 | ||
1045 | do { | |
1046 | cpy = min(md->mask + 1 - (offset & md->mask), len); | |
1047 | memcpy(dst, &data[offset & md->mask], cpy); | |
1048 | offset += cpy; | |
1049 | dst += cpy; | |
1050 | len -= cpy; | |
1051 | } while (len); | |
1052 | ||
1053 | event = &event_copy; | |
1054 | } | |
1055 | ||
5b2bb75a | 1056 | if (event->header.type == PERF_RECORD_SAMPLE) |
b3165f41 | 1057 | event__process_sample(event, self, md->counter); |
5b2bb75a | 1058 | else |
d8f66248 | 1059 | event__process(event, self); |
07800601 | 1060 | old += size; |
07800601 IM |
1061 | } |
1062 | ||
1063 | md->prev = old; | |
1064 | } | |
1065 | ||
c2990a2a MG |
1066 | static struct pollfd event_array[MAX_NR_CPUS * MAX_COUNTERS]; |
1067 | static struct mmap_data mmap_array[MAX_NR_CPUS][MAX_COUNTERS]; | |
1068 | ||
d8f66248 | 1069 | static void perf_session__mmap_read(struct perf_session *self) |
2f01190a FW |
1070 | { |
1071 | int i, counter; | |
1072 | ||
1073 | for (i = 0; i < nr_cpus; i++) { | |
1074 | for (counter = 0; counter < nr_counters; counter++) | |
d8f66248 | 1075 | perf_session__mmap_read_counter(self, &mmap_array[i][counter]); |
2f01190a FW |
1076 | } |
1077 | } | |
1078 | ||
716c69fe IM |
1079 | int nr_poll; |
1080 | int group_fd; | |
1081 | ||
1082 | static void start_counter(int i, int counter) | |
07800601 | 1083 | { |
cdd6c482 | 1084 | struct perf_event_attr *attr; |
0fdc7e67 | 1085 | int cpu; |
716c69fe IM |
1086 | |
1087 | cpu = profile_cpu; | |
1088 | if (target_pid == -1 && profile_cpu == -1) | |
1089 | cpu = i; | |
1090 | ||
1091 | attr = attrs + counter; | |
1092 | ||
1093 | attr->sample_type = PERF_SAMPLE_IP | PERF_SAMPLE_TID; | |
7e4ff9e3 MG |
1094 | |
1095 | if (freq) { | |
1096 | attr->sample_type |= PERF_SAMPLE_PERIOD; | |
1097 | attr->freq = 1; | |
1098 | attr->sample_freq = freq; | |
1099 | } | |
1100 | ||
0fdc7e67 | 1101 | attr->inherit = (cpu < 0) && inherit; |
5b2bb75a | 1102 | attr->mmap = 1; |
716c69fe IM |
1103 | |
1104 | try_again: | |
cdd6c482 | 1105 | fd[i][counter] = sys_perf_event_open(attr, target_pid, cpu, group_fd, 0); |
716c69fe IM |
1106 | |
1107 | if (fd[i][counter] < 0) { | |
1108 | int err = errno; | |
1109 | ||
c10edee2 | 1110 | if (err == EPERM || err == EACCES) |
3da297a6 | 1111 | die("No permission - are you root?\n"); |
716c69fe IM |
1112 | /* |
1113 | * If it's cycles then fall back to hrtimer | |
1114 | * based cpu-clock-tick sw counter, which | |
1115 | * is always available even if no PMU support: | |
1116 | */ | |
1117 | if (attr->type == PERF_TYPE_HARDWARE | |
f4dbfa8f | 1118 | && attr->config == PERF_COUNT_HW_CPU_CYCLES) { |
716c69fe | 1119 | |
3da297a6 IM |
1120 | if (verbose) |
1121 | warning(" ... trying to fall back to cpu-clock-ticks\n"); | |
1122 | ||
716c69fe | 1123 | attr->type = PERF_TYPE_SOFTWARE; |
f4dbfa8f | 1124 | attr->config = PERF_COUNT_SW_CPU_CLOCK; |
716c69fe IM |
1125 | goto try_again; |
1126 | } | |
30c806a0 IM |
1127 | printf("\n"); |
1128 | error("perfcounter syscall returned with %d (%s)\n", | |
1129 | fd[i][counter], strerror(err)); | |
cdd6c482 | 1130 | die("No CONFIG_PERF_EVENTS=y kernel support configured?\n"); |
716c69fe IM |
1131 | exit(-1); |
1132 | } | |
1133 | assert(fd[i][counter] >= 0); | |
1134 | fcntl(fd[i][counter], F_SETFL, O_NONBLOCK); | |
1135 | ||
1136 | /* | |
1137 | * First counter acts as the group leader: | |
1138 | */ | |
1139 | if (group && group_fd == -1) | |
1140 | group_fd = fd[i][counter]; | |
1141 | ||
1142 | event_array[nr_poll].fd = fd[i][counter]; | |
1143 | event_array[nr_poll].events = POLLIN; | |
1144 | nr_poll++; | |
1145 | ||
1146 | mmap_array[i][counter].counter = counter; | |
1147 | mmap_array[i][counter].prev = 0; | |
1148 | mmap_array[i][counter].mask = mmap_pages*page_size - 1; | |
1149 | mmap_array[i][counter].base = mmap(NULL, (mmap_pages+1)*page_size, | |
1150 | PROT_READ, MAP_SHARED, fd[i][counter], 0); | |
1151 | if (mmap_array[i][counter].base == MAP_FAILED) | |
1152 | die("failed to mmap with %d (%s)\n", errno, strerror(errno)); | |
1153 | } | |
1154 | ||
1155 | static int __cmd_top(void) | |
1156 | { | |
1157 | pthread_t thread; | |
1158 | int i, counter; | |
07800601 | 1159 | int ret; |
d8f66248 | 1160 | /* |
b3165f41 ACM |
1161 | * FIXME: perf_session__new should allow passing a O_MMAP, so that all this |
1162 | * mmap reading, etc is encapsulated in it. Use O_WRONLY for now. | |
d8f66248 | 1163 | */ |
75be6cf4 | 1164 | struct perf_session *session = perf_session__new(NULL, O_WRONLY, false); |
b3165f41 ACM |
1165 | if (session == NULL) |
1166 | return -ENOMEM; | |
07800601 | 1167 | |
b7cece76 ACM |
1168 | if (perf_session__create_kernel_maps(session) < 0) { |
1169 | pr_err("Problems creating kernel maps\n"); | |
1170 | return -1; | |
1171 | } | |
1172 | ||
5b2bb75a | 1173 | if (target_pid != -1) |
d8f66248 | 1174 | event__synthesize_thread(target_pid, event__process, session); |
5b2bb75a | 1175 | else |
d8f66248 | 1176 | event__synthesize_threads(event__process, session); |
5b2bb75a | 1177 | |
07800601 IM |
1178 | for (i = 0; i < nr_cpus; i++) { |
1179 | group_fd = -1; | |
716c69fe IM |
1180 | for (counter = 0; counter < nr_counters; counter++) |
1181 | start_counter(i, counter); | |
07800601 IM |
1182 | } |
1183 | ||
2f01190a FW |
1184 | /* Wait for a minimal set of events before starting the snapshot */ |
1185 | poll(event_array, nr_poll, 100); | |
1186 | ||
d8f66248 | 1187 | perf_session__mmap_read(session); |
2f01190a | 1188 | |
07800601 IM |
1189 | if (pthread_create(&thread, NULL, display_thread, NULL)) { |
1190 | printf("Could not create display thread.\n"); | |
1191 | exit(-1); | |
1192 | } | |
1193 | ||
1194 | if (realtime_prio) { | |
1195 | struct sched_param param; | |
1196 | ||
1197 | param.sched_priority = realtime_prio; | |
1198 | if (sched_setscheduler(0, SCHED_FIFO, ¶m)) { | |
1199 | printf("Could not set realtime priority.\n"); | |
1200 | exit(-1); | |
1201 | } | |
1202 | } | |
1203 | ||
1204 | while (1) { | |
2debbc83 | 1205 | int hits = samples; |
07800601 | 1206 | |
d8f66248 | 1207 | perf_session__mmap_read(session); |
07800601 | 1208 | |
2debbc83 | 1209 | if (hits == samples) |
07800601 IM |
1210 | ret = poll(event_array, nr_poll, 100); |
1211 | } | |
1212 | ||
1213 | return 0; | |
1214 | } | |
b456bae0 IM |
1215 | |
1216 | static const char * const top_usage[] = { | |
1217 | "perf top [<options>]", | |
1218 | NULL | |
1219 | }; | |
1220 | ||
b456bae0 IM |
1221 | static const struct option options[] = { |
1222 | OPT_CALLBACK('e', "event", NULL, "event", | |
86847b62 TG |
1223 | "event selector. use 'perf list' to list available events", |
1224 | parse_events), | |
b456bae0 IM |
1225 | OPT_INTEGER('c', "count", &default_interval, |
1226 | "event period to sample"), | |
1227 | OPT_INTEGER('p', "pid", &target_pid, | |
1228 | "profile events on existing pid"), | |
1229 | OPT_BOOLEAN('a', "all-cpus", &system_wide, | |
1230 | "system-wide collection from all CPUs"), | |
1231 | OPT_INTEGER('C', "CPU", &profile_cpu, | |
1232 | "CPU to profile on"), | |
b32d133a ACM |
1233 | OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name, |
1234 | "file", "vmlinux pathname"), | |
8ffcda17 ACM |
1235 | OPT_BOOLEAN('K', "hide_kernel_symbols", &hide_kernel_symbols, |
1236 | "hide kernel symbols"), | |
b456bae0 IM |
1237 | OPT_INTEGER('m', "mmap-pages", &mmap_pages, |
1238 | "number of mmap data pages"), | |
1239 | OPT_INTEGER('r', "realtime", &realtime_prio, | |
1240 | "collect data with this RT SCHED_FIFO priority"), | |
db20c003 | 1241 | OPT_INTEGER('d', "delay", &delay_secs, |
b456bae0 IM |
1242 | "number of seconds to delay between refreshes"), |
1243 | OPT_BOOLEAN('D', "dump-symtab", &dump_symtab, | |
1244 | "dump the symbol table used for profiling"), | |
6e53cdf1 | 1245 | OPT_INTEGER('f', "count-filter", &count_filter, |
b456bae0 IM |
1246 | "only display functions with more events than this"), |
1247 | OPT_BOOLEAN('g', "group", &group, | |
1248 | "put the counters into a counter group"), | |
0fdc7e67 MG |
1249 | OPT_BOOLEAN('i', "inherit", &inherit, |
1250 | "child tasks inherit counters"), | |
923c42c1 MG |
1251 | OPT_STRING('s', "sym-annotate", &sym_filter, "symbol name", |
1252 | "symbol to annotate - requires -k option"), | |
1f208ea6 | 1253 | OPT_BOOLEAN('z', "zero", &zero, |
b456bae0 | 1254 | "zero history across updates"), |
6e53cdf1 | 1255 | OPT_INTEGER('F', "freq", &freq, |
b456bae0 | 1256 | "profile at this frequency"), |
6e53cdf1 IM |
1257 | OPT_INTEGER('E', "entries", &print_entries, |
1258 | "display this many functions"), | |
8ffcda17 ACM |
1259 | OPT_BOOLEAN('U', "hide_user_symbols", &hide_user_symbols, |
1260 | "hide user symbols"), | |
3da297a6 IM |
1261 | OPT_BOOLEAN('v', "verbose", &verbose, |
1262 | "be more verbose (show counter open errors, etc)"), | |
b456bae0 IM |
1263 | OPT_END() |
1264 | }; | |
1265 | ||
f37a291c | 1266 | int cmd_top(int argc, const char **argv, const char *prefix __used) |
b456bae0 | 1267 | { |
b32d133a | 1268 | int counter; |
b456bae0 IM |
1269 | |
1270 | page_size = sysconf(_SC_PAGE_SIZE); | |
1271 | ||
b456bae0 IM |
1272 | argc = parse_options(argc, argv, options, top_usage, 0); |
1273 | if (argc) | |
1274 | usage_with_options(top_usage, options); | |
1275 | ||
b456bae0 IM |
1276 | /* CPU and PID are mutually exclusive */ |
1277 | if (target_pid != -1 && profile_cpu != -1) { | |
1278 | printf("WARNING: PID switch overriding CPU\n"); | |
1279 | sleep(1); | |
1280 | profile_cpu = -1; | |
1281 | } | |
1282 | ||
a21ca2ca | 1283 | if (!nr_counters) |
b456bae0 | 1284 | nr_counters = 1; |
b456bae0 | 1285 | |
b32d133a ACM |
1286 | symbol_conf.priv_size = (sizeof(struct sym_entry) + |
1287 | (nr_counters + 1) * sizeof(unsigned long)); | |
1288 | if (symbol_conf.vmlinux_name == NULL) | |
1289 | symbol_conf.try_vmlinux_path = true; | |
75be6cf4 | 1290 | if (symbol__init() < 0) |
b32d133a | 1291 | return -1; |
5a8e5a30 | 1292 | |
2f335a02 FW |
1293 | if (delay_secs < 1) |
1294 | delay_secs = 1; | |
1295 | ||
923c42c1 | 1296 | parse_source(sym_filter_entry); |
a21ca2ca | 1297 | |
7e4ff9e3 MG |
1298 | /* |
1299 | * User specified count overrides default frequency. | |
1300 | */ | |
1301 | if (default_interval) | |
1302 | freq = 0; | |
1303 | else if (freq) { | |
1304 | default_interval = freq; | |
1305 | } else { | |
1306 | fprintf(stderr, "frequency and count are zero, aborting\n"); | |
1307 | exit(EXIT_FAILURE); | |
1308 | } | |
1309 | ||
a21ca2ca IM |
1310 | /* |
1311 | * Fill in the ones not specifically initialized via -c: | |
1312 | */ | |
b456bae0 | 1313 | for (counter = 0; counter < nr_counters; counter++) { |
a21ca2ca | 1314 | if (attrs[counter].sample_period) |
b456bae0 IM |
1315 | continue; |
1316 | ||
a21ca2ca | 1317 | attrs[counter].sample_period = default_interval; |
b456bae0 IM |
1318 | } |
1319 | ||
1320 | nr_cpus = sysconf(_SC_NPROCESSORS_ONLN); | |
1321 | assert(nr_cpus <= MAX_NR_CPUS); | |
1322 | assert(nr_cpus >= 0); | |
1323 | ||
1324 | if (target_pid != -1 || profile_cpu != -1) | |
1325 | nr_cpus = 1; | |
1326 | ||
13cc5079 | 1327 | get_term_dimensions(&winsize); |
3b6ed988 | 1328 | if (print_entries == 0) { |
13cc5079 | 1329 | update_print_entries(&winsize); |
3b6ed988 ACM |
1330 | signal(SIGWINCH, sig_winch_handler); |
1331 | } | |
1332 | ||
b456bae0 IM |
1333 | return __cmd_top(); |
1334 | } |