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" |
69aad6f1 | 24 | #include "util/evsel.h" |
b3165f41 ACM |
25 | #include "util/session.h" |
26 | #include "util/symbol.h" | |
439d473b | 27 | #include "util/thread.h" |
148be2c1 | 28 | #include "util/util.h" |
43cbcd8a | 29 | #include <linux/rbtree.h> |
b456bae0 IM |
30 | #include "util/parse-options.h" |
31 | #include "util/parse-events.h" | |
a12b51c4 | 32 | #include "util/cpumap.h" |
69aad6f1 | 33 | #include "util/xyarray.h" |
07800601 | 34 | |
8f28827a FW |
35 | #include "util/debug.h" |
36 | ||
07800601 IM |
37 | #include <assert.h> |
38 | #include <fcntl.h> | |
0e9b20b8 | 39 | |
07800601 | 40 | #include <stdio.h> |
923c42c1 MG |
41 | #include <termios.h> |
42 | #include <unistd.h> | |
9486aa38 | 43 | #include <inttypes.h> |
0e9b20b8 | 44 | |
07800601 | 45 | #include <errno.h> |
07800601 IM |
46 | #include <time.h> |
47 | #include <sched.h> | |
48 | #include <pthread.h> | |
49 | ||
50 | #include <sys/syscall.h> | |
51 | #include <sys/ioctl.h> | |
52 | #include <sys/poll.h> | |
53 | #include <sys/prctl.h> | |
54 | #include <sys/wait.h> | |
55 | #include <sys/uio.h> | |
56 | #include <sys/mman.h> | |
57 | ||
58 | #include <linux/unistd.h> | |
59 | #include <linux/types.h> | |
60 | ||
69aad6f1 | 61 | #define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y)) |
07800601 | 62 | |
c0555642 | 63 | static bool system_wide = false; |
07800601 | 64 | |
7e4ff9e3 | 65 | static int default_interval = 0; |
07800601 | 66 | |
42e59d7d | 67 | static int count_filter = 5; |
3b6ed988 | 68 | static int print_entries; |
07800601 | 69 | |
42e59d7d | 70 | static int target_pid = -1; |
d6d901c2 | 71 | static int target_tid = -1; |
5c98d466 | 72 | static struct thread_map *threads; |
c0555642 | 73 | static bool inherit = false; |
60d567e2 | 74 | static struct cpu_map *cpus; |
1967936d | 75 | static int realtime_prio = 0; |
c0555642 | 76 | static bool group = false; |
07800601 | 77 | static unsigned int page_size; |
42e59d7d IM |
78 | static unsigned int mmap_pages = 16; |
79 | static int freq = 1000; /* 1 KHz */ | |
07800601 | 80 | |
42e59d7d | 81 | static int delay_secs = 2; |
c0555642 IM |
82 | static bool zero = false; |
83 | static bool dump_symtab = false; | |
07800601 | 84 | |
8ffcda17 ACM |
85 | static bool hide_kernel_symbols = false; |
86 | static bool hide_user_symbols = false; | |
13cc5079 | 87 | static struct winsize winsize; |
8ffcda17 | 88 | |
923c42c1 MG |
89 | /* |
90 | * Source | |
91 | */ | |
92 | ||
93 | struct source_line { | |
94 | u64 eip; | |
95 | unsigned long count[MAX_COUNTERS]; | |
96 | char *line; | |
97 | struct source_line *next; | |
98 | }; | |
99 | ||
edb7c60e | 100 | static const char *sym_filter = NULL; |
42e59d7d | 101 | struct sym_entry *sym_filter_entry = NULL; |
6cff0e8d | 102 | struct sym_entry *sym_filter_entry_sched = NULL; |
42e59d7d IM |
103 | static int sym_pcnt_filter = 5; |
104 | static int sym_counter = 0; | |
69aad6f1 | 105 | static struct perf_evsel *sym_evsel = NULL; |
42e59d7d | 106 | static int display_weighted = -1; |
c45c6ea2 | 107 | static const char *cpu_list; |
923c42c1 | 108 | |
07800601 IM |
109 | /* |
110 | * Symbols | |
111 | */ | |
112 | ||
b269876c ACM |
113 | struct sym_entry_source { |
114 | struct source_line *source; | |
115 | struct source_line *lines; | |
116 | struct source_line **lines_tail; | |
117 | pthread_mutex_t lock; | |
118 | }; | |
119 | ||
07800601 | 120 | struct sym_entry { |
de04687f ACM |
121 | struct rb_node rb_node; |
122 | struct list_head node; | |
c44613a4 ACM |
123 | unsigned long snap_count; |
124 | double weight; | |
07800601 | 125 | int skip; |
13cc5079 | 126 | u16 name_len; |
8ffcda17 | 127 | u8 origin; |
439d473b | 128 | struct map *map; |
b269876c | 129 | struct sym_entry_source *src; |
5a8e5a30 | 130 | unsigned long count[0]; |
07800601 IM |
131 | }; |
132 | ||
923c42c1 MG |
133 | /* |
134 | * Source functions | |
135 | */ | |
136 | ||
51a472de ACM |
137 | static inline struct symbol *sym_entry__symbol(struct sym_entry *self) |
138 | { | |
b32d133a | 139 | return ((void *)self) + symbol_conf.priv_size; |
51a472de ACM |
140 | } |
141 | ||
895f0edc | 142 | void get_term_dimensions(struct winsize *ws) |
3b6ed988 | 143 | { |
13cc5079 ACM |
144 | char *s = getenv("LINES"); |
145 | ||
146 | if (s != NULL) { | |
147 | ws->ws_row = atoi(s); | |
148 | s = getenv("COLUMNS"); | |
149 | if (s != NULL) { | |
150 | ws->ws_col = atoi(s); | |
151 | if (ws->ws_row && ws->ws_col) | |
152 | return; | |
153 | } | |
3b6ed988 | 154 | } |
13cc5079 ACM |
155 | #ifdef TIOCGWINSZ |
156 | if (ioctl(1, TIOCGWINSZ, ws) == 0 && | |
157 | ws->ws_row && ws->ws_col) | |
158 | return; | |
3b6ed988 | 159 | #endif |
13cc5079 ACM |
160 | ws->ws_row = 25; |
161 | ws->ws_col = 80; | |
3b6ed988 ACM |
162 | } |
163 | ||
13cc5079 | 164 | static void update_print_entries(struct winsize *ws) |
3b6ed988 | 165 | { |
13cc5079 ACM |
166 | print_entries = ws->ws_row; |
167 | ||
3b6ed988 ACM |
168 | if (print_entries > 9) |
169 | print_entries -= 9; | |
170 | } | |
171 | ||
172 | static void sig_winch_handler(int sig __used) | |
173 | { | |
13cc5079 ACM |
174 | get_term_dimensions(&winsize); |
175 | update_print_entries(&winsize); | |
3b6ed988 ACM |
176 | } |
177 | ||
b0a9ab62 | 178 | static int parse_source(struct sym_entry *syme) |
923c42c1 MG |
179 | { |
180 | struct symbol *sym; | |
b269876c | 181 | struct sym_entry_source *source; |
439d473b | 182 | struct map *map; |
923c42c1 | 183 | FILE *file; |
83a0944f | 184 | char command[PATH_MAX*2]; |
439d473b ACM |
185 | const char *path; |
186 | u64 len; | |
923c42c1 MG |
187 | |
188 | if (!syme) | |
b0a9ab62 ACM |
189 | return -1; |
190 | ||
191 | sym = sym_entry__symbol(syme); | |
192 | map = syme->map; | |
193 | ||
194 | /* | |
195 | * We can't annotate with just /proc/kallsyms | |
196 | */ | |
197 | if (map->dso->origin == DSO__ORIG_KERNEL) | |
198 | return -1; | |
923c42c1 | 199 | |
b269876c | 200 | if (syme->src == NULL) { |
36479484 | 201 | syme->src = zalloc(sizeof(*source)); |
b269876c | 202 | if (syme->src == NULL) |
b0a9ab62 | 203 | return -1; |
b269876c ACM |
204 | pthread_mutex_init(&syme->src->lock, NULL); |
205 | } | |
206 | ||
207 | source = syme->src; | |
208 | ||
209 | if (source->lines) { | |
210 | pthread_mutex_lock(&source->lock); | |
923c42c1 MG |
211 | goto out_assign; |
212 | } | |
439d473b | 213 | path = map->dso->long_name; |
923c42c1 | 214 | |
923c42c1 MG |
215 | len = sym->end - sym->start; |
216 | ||
439d473b | 217 | sprintf(command, |
9486aa38 | 218 | "objdump --start-address=%#0*" PRIx64 " --stop-address=%#0*" PRIx64 " -dS %s", |
5f485364 ACM |
219 | BITS_PER_LONG / 4, map__rip_2objdump(map, sym->start), |
220 | BITS_PER_LONG / 4, map__rip_2objdump(map, sym->end), path); | |
923c42c1 MG |
221 | |
222 | file = popen(command, "r"); | |
223 | if (!file) | |
b0a9ab62 | 224 | return -1; |
923c42c1 | 225 | |
b269876c ACM |
226 | pthread_mutex_lock(&source->lock); |
227 | source->lines_tail = &source->lines; | |
923c42c1 MG |
228 | while (!feof(file)) { |
229 | struct source_line *src; | |
230 | size_t dummy = 0; | |
ee11b90b | 231 | char *c, *sep; |
923c42c1 MG |
232 | |
233 | src = malloc(sizeof(struct source_line)); | |
234 | assert(src != NULL); | |
235 | memset(src, 0, sizeof(struct source_line)); | |
236 | ||
237 | if (getline(&src->line, &dummy, file) < 0) | |
238 | break; | |
239 | if (!src->line) | |
240 | break; | |
241 | ||
242 | c = strchr(src->line, '\n'); | |
243 | if (c) | |
244 | *c = 0; | |
245 | ||
246 | src->next = NULL; | |
b269876c ACM |
247 | *source->lines_tail = src; |
248 | source->lines_tail = &src->next; | |
923c42c1 | 249 | |
ee11b90b KS |
250 | src->eip = strtoull(src->line, &sep, 16); |
251 | if (*sep == ':') | |
252 | src->eip = map__objdump_2ip(map, src->eip); | |
253 | else /* this line has no ip info (e.g. source line) */ | |
254 | src->eip = 0; | |
923c42c1 MG |
255 | } |
256 | pclose(file); | |
257 | out_assign: | |
258 | sym_filter_entry = syme; | |
b269876c | 259 | pthread_mutex_unlock(&source->lock); |
b0a9ab62 | 260 | return 0; |
923c42c1 MG |
261 | } |
262 | ||
263 | static void __zero_source_counters(struct sym_entry *syme) | |
264 | { | |
265 | int i; | |
266 | struct source_line *line; | |
267 | ||
b269876c | 268 | line = syme->src->lines; |
923c42c1 MG |
269 | while (line) { |
270 | for (i = 0; i < nr_counters; i++) | |
271 | line->count[i] = 0; | |
272 | line = line->next; | |
273 | } | |
274 | } | |
275 | ||
276 | static void record_precise_ip(struct sym_entry *syme, int counter, u64 ip) | |
277 | { | |
278 | struct source_line *line; | |
279 | ||
280 | if (syme != sym_filter_entry) | |
281 | return; | |
282 | ||
b269876c | 283 | if (pthread_mutex_trylock(&syme->src->lock)) |
923c42c1 MG |
284 | return; |
285 | ||
b269876c | 286 | if (syme->src == NULL || syme->src->source == NULL) |
923c42c1 MG |
287 | goto out_unlock; |
288 | ||
b269876c | 289 | for (line = syme->src->lines; line; line = line->next) { |
ee11b90b KS |
290 | /* skip lines without IP info */ |
291 | if (line->eip == 0) | |
292 | continue; | |
923c42c1 MG |
293 | if (line->eip == ip) { |
294 | line->count[counter]++; | |
295 | break; | |
296 | } | |
297 | if (line->eip > ip) | |
298 | break; | |
299 | } | |
300 | out_unlock: | |
b269876c | 301 | pthread_mutex_unlock(&syme->src->lock); |
923c42c1 MG |
302 | } |
303 | ||
c7ad21af ACM |
304 | #define PATTERN_LEN (BITS_PER_LONG / 4 + 2) |
305 | ||
923c42c1 MG |
306 | static void lookup_sym_source(struct sym_entry *syme) |
307 | { | |
51a472de | 308 | struct symbol *symbol = sym_entry__symbol(syme); |
923c42c1 | 309 | struct source_line *line; |
c7ad21af | 310 | char pattern[PATTERN_LEN + 1]; |
923c42c1 | 311 | |
9486aa38 | 312 | sprintf(pattern, "%0*" PRIx64 " <", BITS_PER_LONG / 4, |
5f485364 | 313 | map__rip_2objdump(syme->map, symbol->start)); |
923c42c1 | 314 | |
b269876c ACM |
315 | pthread_mutex_lock(&syme->src->lock); |
316 | for (line = syme->src->lines; line; line = line->next) { | |
c7ad21af | 317 | if (memcmp(line->line, pattern, PATTERN_LEN) == 0) { |
b269876c | 318 | syme->src->source = line; |
923c42c1 MG |
319 | break; |
320 | } | |
321 | } | |
b269876c | 322 | pthread_mutex_unlock(&syme->src->lock); |
923c42c1 MG |
323 | } |
324 | ||
325 | static void show_lines(struct source_line *queue, int count, int total) | |
326 | { | |
327 | int i; | |
328 | struct source_line *line; | |
329 | ||
330 | line = queue; | |
331 | for (i = 0; i < count; i++) { | |
332 | float pcnt = 100.0*(float)line->count[sym_counter]/(float)total; | |
333 | ||
334 | printf("%8li %4.1f%%\t%s\n", line->count[sym_counter], pcnt, line->line); | |
335 | line = line->next; | |
336 | } | |
337 | } | |
338 | ||
339 | #define TRACE_COUNT 3 | |
340 | ||
341 | static void show_details(struct sym_entry *syme) | |
342 | { | |
343 | struct symbol *symbol; | |
344 | struct source_line *line; | |
345 | struct source_line *line_queue = NULL; | |
346 | int displayed = 0; | |
347 | int line_queue_count = 0, total = 0, more = 0; | |
348 | ||
349 | if (!syme) | |
350 | return; | |
351 | ||
b269876c | 352 | if (!syme->src->source) |
923c42c1 MG |
353 | lookup_sym_source(syme); |
354 | ||
b269876c | 355 | if (!syme->src->source) |
923c42c1 MG |
356 | return; |
357 | ||
51a472de | 358 | symbol = sym_entry__symbol(syme); |
69aad6f1 | 359 | printf("Showing %s for %s\n", event_name(sym_evsel), symbol->name); |
923c42c1 MG |
360 | printf(" Events Pcnt (>=%d%%)\n", sym_pcnt_filter); |
361 | ||
b269876c ACM |
362 | pthread_mutex_lock(&syme->src->lock); |
363 | line = syme->src->source; | |
923c42c1 MG |
364 | while (line) { |
365 | total += line->count[sym_counter]; | |
366 | line = line->next; | |
367 | } | |
368 | ||
b269876c | 369 | line = syme->src->source; |
923c42c1 MG |
370 | while (line) { |
371 | float pcnt = 0.0; | |
372 | ||
373 | if (!line_queue_count) | |
374 | line_queue = line; | |
375 | line_queue_count++; | |
376 | ||
377 | if (line->count[sym_counter]) | |
378 | pcnt = 100.0 * line->count[sym_counter] / (float)total; | |
379 | if (pcnt >= (float)sym_pcnt_filter) { | |
380 | if (displayed <= print_entries) | |
381 | show_lines(line_queue, line_queue_count, total); | |
382 | else more++; | |
383 | displayed += line_queue_count; | |
384 | line_queue_count = 0; | |
385 | line_queue = NULL; | |
386 | } else if (line_queue_count > TRACE_COUNT) { | |
387 | line_queue = line_queue->next; | |
388 | line_queue_count--; | |
389 | } | |
390 | ||
391 | line->count[sym_counter] = zero ? 0 : line->count[sym_counter] * 7 / 8; | |
392 | line = line->next; | |
393 | } | |
b269876c | 394 | pthread_mutex_unlock(&syme->src->lock); |
923c42c1 MG |
395 | if (more) |
396 | printf("%d lines not displayed, maybe increase display entries [e]\n", more); | |
397 | } | |
07800601 | 398 | |
de04687f | 399 | /* |
5b2bb75a | 400 | * Symbols will be added here in event__process_sample and will get out |
de04687f ACM |
401 | * after decayed. |
402 | */ | |
403 | static LIST_HEAD(active_symbols); | |
c44613a4 | 404 | static pthread_mutex_t active_symbols_lock = PTHREAD_MUTEX_INITIALIZER; |
07800601 | 405 | |
07800601 IM |
406 | /* |
407 | * Ordering weight: count-1 * count-2 * ... / count-n | |
408 | */ | |
409 | static double sym_weight(const struct sym_entry *sym) | |
410 | { | |
c44613a4 | 411 | double weight = sym->snap_count; |
07800601 IM |
412 | int counter; |
413 | ||
46ab9764 MG |
414 | if (!display_weighted) |
415 | return weight; | |
416 | ||
07800601 IM |
417 | for (counter = 1; counter < nr_counters-1; counter++) |
418 | weight *= sym->count[counter]; | |
419 | ||
420 | weight /= (sym->count[counter] + 1); | |
421 | ||
422 | return weight; | |
423 | } | |
424 | ||
2debbc83 | 425 | static long samples; |
a1645ce1 | 426 | static long kernel_samples, us_samples; |
1676b8a0 | 427 | static long exact_samples; |
a1645ce1 | 428 | static long guest_us_samples, guest_kernel_samples; |
07800601 IM |
429 | static const char CONSOLE_CLEAR[] = "\e[H\e[2J"; |
430 | ||
c44613a4 | 431 | static void __list_insert_active_sym(struct sym_entry *syme) |
de04687f ACM |
432 | { |
433 | list_add(&syme->node, &active_symbols); | |
434 | } | |
435 | ||
c44613a4 ACM |
436 | static void list_remove_active_sym(struct sym_entry *syme) |
437 | { | |
438 | pthread_mutex_lock(&active_symbols_lock); | |
439 | list_del_init(&syme->node); | |
440 | pthread_mutex_unlock(&active_symbols_lock); | |
441 | } | |
442 | ||
de04687f ACM |
443 | static void rb_insert_active_sym(struct rb_root *tree, struct sym_entry *se) |
444 | { | |
445 | struct rb_node **p = &tree->rb_node; | |
446 | struct rb_node *parent = NULL; | |
447 | struct sym_entry *iter; | |
448 | ||
449 | while (*p != NULL) { | |
450 | parent = *p; | |
451 | iter = rb_entry(parent, struct sym_entry, rb_node); | |
452 | ||
c44613a4 | 453 | if (se->weight > iter->weight) |
de04687f ACM |
454 | p = &(*p)->rb_left; |
455 | else | |
456 | p = &(*p)->rb_right; | |
457 | } | |
458 | ||
459 | rb_link_node(&se->rb_node, parent, p); | |
460 | rb_insert_color(&se->rb_node, tree); | |
461 | } | |
07800601 IM |
462 | |
463 | static void print_sym_table(void) | |
464 | { | |
233f0b95 | 465 | int printed = 0, j; |
69aad6f1 ACM |
466 | struct perf_evsel *counter; |
467 | int snap = !display_weighted ? sym_counter : 0; | |
2debbc83 | 468 | float samples_per_sec = samples/delay_secs; |
a1645ce1 ZY |
469 | float ksamples_per_sec = kernel_samples/delay_secs; |
470 | float us_samples_per_sec = (us_samples)/delay_secs; | |
471 | float guest_kernel_samples_per_sec = (guest_kernel_samples)/delay_secs; | |
472 | float guest_us_samples_per_sec = (guest_us_samples)/delay_secs; | |
1676b8a0 | 473 | float esamples_percent = (100.0*exact_samples)/samples; |
2debbc83 | 474 | float sum_ksamples = 0.0; |
de04687f ACM |
475 | struct sym_entry *syme, *n; |
476 | struct rb_root tmp = RB_ROOT; | |
477 | struct rb_node *nd; | |
00909e95 | 478 | int sym_width = 0, dso_width = 0, dso_short_width = 0; |
13cc5079 | 479 | const int win_width = winsize.ws_col - 1; |
07800601 | 480 | |
a1645ce1 ZY |
481 | samples = us_samples = kernel_samples = exact_samples = 0; |
482 | guest_kernel_samples = guest_us_samples = 0; | |
07800601 | 483 | |
de04687f | 484 | /* Sort the active symbols */ |
c44613a4 ACM |
485 | pthread_mutex_lock(&active_symbols_lock); |
486 | syme = list_entry(active_symbols.next, struct sym_entry, node); | |
487 | pthread_mutex_unlock(&active_symbols_lock); | |
488 | ||
489 | list_for_each_entry_safe_from(syme, n, &active_symbols, node) { | |
46ab9764 | 490 | syme->snap_count = syme->count[snap]; |
c44613a4 | 491 | if (syme->snap_count != 0) { |
13cc5079 | 492 | |
8ffcda17 ACM |
493 | if ((hide_user_symbols && |
494 | syme->origin == PERF_RECORD_MISC_USER) || | |
495 | (hide_kernel_symbols && | |
496 | syme->origin == PERF_RECORD_MISC_KERNEL)) { | |
497 | list_remove_active_sym(syme); | |
498 | continue; | |
499 | } | |
c44613a4 | 500 | syme->weight = sym_weight(syme); |
de04687f | 501 | rb_insert_active_sym(&tmp, syme); |
2debbc83 | 502 | sum_ksamples += syme->snap_count; |
d94b9430 MG |
503 | |
504 | for (j = 0; j < nr_counters; j++) | |
de04687f ACM |
505 | syme->count[j] = zero ? 0 : syme->count[j] * 7 / 8; |
506 | } else | |
c44613a4 | 507 | list_remove_active_sym(syme); |
d94b9430 MG |
508 | } |
509 | ||
0f5486b5 | 510 | puts(CONSOLE_CLEAR); |
07800601 | 511 | |
13cc5079 | 512 | printf("%-*.*s\n", win_width, win_width, graph_dotted_line); |
a1645ce1 ZY |
513 | if (!perf_guest) { |
514 | printf(" PerfTop:%8.0f irqs/sec kernel:%4.1f%%" | |
515 | " exact: %4.1f%% [", | |
516 | samples_per_sec, | |
517 | 100.0 - (100.0 * ((samples_per_sec - ksamples_per_sec) / | |
518 | samples_per_sec)), | |
519 | esamples_percent); | |
520 | } else { | |
521 | printf(" PerfTop:%8.0f irqs/sec kernel:%4.1f%% us:%4.1f%%" | |
522 | " guest kernel:%4.1f%% guest us:%4.1f%%" | |
523 | " exact: %4.1f%% [", | |
524 | samples_per_sec, | |
525 | 100.0 - (100.0 * ((samples_per_sec-ksamples_per_sec) / | |
526 | samples_per_sec)), | |
527 | 100.0 - (100.0 * ((samples_per_sec-us_samples_per_sec) / | |
528 | samples_per_sec)), | |
529 | 100.0 - (100.0 * ((samples_per_sec - | |
530 | guest_kernel_samples_per_sec) / | |
531 | samples_per_sec)), | |
532 | 100.0 - (100.0 * ((samples_per_sec - | |
533 | guest_us_samples_per_sec) / | |
534 | samples_per_sec)), | |
535 | esamples_percent); | |
536 | } | |
07800601 | 537 | |
46ab9764 | 538 | if (nr_counters == 1 || !display_weighted) { |
69aad6f1 ACM |
539 | struct perf_evsel *first; |
540 | first = list_entry(evsel_list.next, struct perf_evsel, node); | |
9486aa38 | 541 | printf("%" PRIu64, (uint64_t)first->attr.sample_period); |
cf1f4574 IM |
542 | if (freq) |
543 | printf("Hz "); | |
544 | else | |
545 | printf(" "); | |
546 | } | |
07800601 | 547 | |
46ab9764 | 548 | if (!display_weighted) |
69aad6f1 ACM |
549 | printf("%s", event_name(sym_evsel)); |
550 | else list_for_each_entry(counter, &evsel_list, node) { | |
551 | if (counter->idx) | |
07800601 IM |
552 | printf("/"); |
553 | ||
554 | printf("%s", event_name(counter)); | |
555 | } | |
556 | ||
557 | printf( "], "); | |
558 | ||
b456bae0 IM |
559 | if (target_pid != -1) |
560 | printf(" (target_pid: %d", target_pid); | |
d6d901c2 ZY |
561 | else if (target_tid != -1) |
562 | printf(" (target_tid: %d", target_tid); | |
07800601 IM |
563 | else |
564 | printf(" (all"); | |
565 | ||
01797c59 | 566 | if (cpu_list) |
60d567e2 | 567 | printf(", CPU%s: %s)\n", cpus->nr > 1 ? "s" : "", cpu_list); |
07800601 | 568 | else { |
d6d901c2 | 569 | if (target_tid != -1) |
07800601 IM |
570 | printf(")\n"); |
571 | else | |
60d567e2 | 572 | printf(", %d CPU%s)\n", cpus->nr, cpus->nr > 1 ? "s" : ""); |
07800601 IM |
573 | } |
574 | ||
1a105f74 | 575 | printf("%-*.*s\n", win_width, win_width, graph_dotted_line); |
07800601 | 576 | |
923c42c1 MG |
577 | if (sym_filter_entry) { |
578 | show_details(sym_filter_entry); | |
579 | return; | |
580 | } | |
581 | ||
13cc5079 ACM |
582 | /* |
583 | * Find the longest symbol name that will be displayed | |
584 | */ | |
585 | for (nd = rb_first(&tmp); nd; nd = rb_next(nd)) { | |
586 | syme = rb_entry(nd, struct sym_entry, rb_node); | |
587 | if (++printed > print_entries || | |
588 | (int)syme->snap_count < count_filter) | |
589 | continue; | |
590 | ||
1a105f74 ACM |
591 | if (syme->map->dso->long_name_len > dso_width) |
592 | dso_width = syme->map->dso->long_name_len; | |
593 | ||
b63be8d7 ACM |
594 | if (syme->map->dso->short_name_len > dso_short_width) |
595 | dso_short_width = syme->map->dso->short_name_len; | |
596 | ||
13cc5079 ACM |
597 | if (syme->name_len > sym_width) |
598 | sym_width = syme->name_len; | |
599 | } | |
600 | ||
601 | printed = 0; | |
602 | ||
b63be8d7 ACM |
603 | if (sym_width + dso_width > winsize.ws_col - 29) { |
604 | dso_width = dso_short_width; | |
605 | if (sym_width + dso_width > winsize.ws_col - 29) | |
606 | sym_width = winsize.ws_col - dso_width - 29; | |
607 | } | |
7cc017ed | 608 | putchar('\n'); |
07800601 | 609 | if (nr_counters == 1) |
5b2bb75a | 610 | printf(" samples pcnt"); |
07800601 | 611 | else |
5b2bb75a | 612 | printf(" weight samples pcnt"); |
07800601 | 613 | |
7ced156b ACM |
614 | if (verbose) |
615 | printf(" RIP "); | |
7cc017ed | 616 | printf(" %-*.*s DSO\n", sym_width, sym_width, "function"); |
5b2bb75a | 617 | printf(" %s _______ _____", |
7ced156b ACM |
618 | nr_counters == 1 ? " " : "______"); |
619 | if (verbose) | |
5b2bb75a | 620 | printf(" ________________"); |
1a105f74 | 621 | printf(" %-*.*s", sym_width, sym_width, graph_line); |
7cc017ed | 622 | printf(" %-*.*s", dso_width, dso_width, graph_line); |
1a105f74 | 623 | puts("\n"); |
07800601 | 624 | |
de04687f | 625 | for (nd = rb_first(&tmp); nd; nd = rb_next(nd)) { |
83a0944f | 626 | struct symbol *sym; |
8fc0321f | 627 | double pcnt; |
d94b9430 | 628 | |
83a0944f | 629 | syme = rb_entry(nd, struct sym_entry, rb_node); |
51a472de | 630 | sym = sym_entry__symbol(syme); |
923c42c1 | 631 | if (++printed > print_entries || (int)syme->snap_count < count_filter) |
c44613a4 | 632 | continue; |
d94b9430 | 633 | |
2debbc83 IM |
634 | pcnt = 100.0 - (100.0 * ((sum_ksamples - syme->snap_count) / |
635 | sum_ksamples)); | |
d94b9430 | 636 | |
46ab9764 | 637 | if (nr_counters == 1 || !display_weighted) |
5b2bb75a | 638 | printf("%20.2f ", syme->weight); |
d94b9430 | 639 | else |
5b2bb75a | 640 | printf("%9.1f %10ld ", syme->weight, syme->snap_count); |
8fc0321f | 641 | |
1e11fd82 | 642 | percent_color_fprintf(stdout, "%4.1f%%", pcnt); |
7ced156b | 643 | if (verbose) |
9486aa38 | 644 | printf(" %016" PRIx64, sym->start); |
13cc5079 | 645 | printf(" %-*.*s", sym_width, sym_width, sym->name); |
7cc017ed ACM |
646 | printf(" %-*.*s\n", dso_width, dso_width, |
647 | dso_width >= syme->map->dso->long_name_len ? | |
648 | syme->map->dso->long_name : | |
649 | syme->map->dso->short_name); | |
07800601 | 650 | } |
07800601 IM |
651 | } |
652 | ||
923c42c1 MG |
653 | static void prompt_integer(int *target, const char *msg) |
654 | { | |
655 | char *buf = malloc(0), *p; | |
656 | size_t dummy = 0; | |
657 | int tmp; | |
658 | ||
659 | fprintf(stdout, "\n%s: ", msg); | |
660 | if (getline(&buf, &dummy, stdin) < 0) | |
661 | return; | |
662 | ||
663 | p = strchr(buf, '\n'); | |
664 | if (p) | |
665 | *p = 0; | |
666 | ||
667 | p = buf; | |
668 | while(*p) { | |
669 | if (!isdigit(*p)) | |
670 | goto out_free; | |
671 | p++; | |
672 | } | |
673 | tmp = strtoul(buf, NULL, 10); | |
674 | *target = tmp; | |
675 | out_free: | |
676 | free(buf); | |
677 | } | |
678 | ||
679 | static void prompt_percent(int *target, const char *msg) | |
680 | { | |
681 | int tmp = 0; | |
682 | ||
683 | prompt_integer(&tmp, msg); | |
684 | if (tmp >= 0 && tmp <= 100) | |
685 | *target = tmp; | |
686 | } | |
687 | ||
688 | static void prompt_symbol(struct sym_entry **target, const char *msg) | |
689 | { | |
690 | char *buf = malloc(0), *p; | |
691 | struct sym_entry *syme = *target, *n, *found = NULL; | |
692 | size_t dummy = 0; | |
693 | ||
694 | /* zero counters of active symbol */ | |
695 | if (syme) { | |
b269876c | 696 | pthread_mutex_lock(&syme->src->lock); |
923c42c1 MG |
697 | __zero_source_counters(syme); |
698 | *target = NULL; | |
b269876c | 699 | pthread_mutex_unlock(&syme->src->lock); |
923c42c1 MG |
700 | } |
701 | ||
702 | fprintf(stdout, "\n%s: ", msg); | |
703 | if (getline(&buf, &dummy, stdin) < 0) | |
704 | goto out_free; | |
705 | ||
706 | p = strchr(buf, '\n'); | |
707 | if (p) | |
708 | *p = 0; | |
709 | ||
710 | pthread_mutex_lock(&active_symbols_lock); | |
711 | syme = list_entry(active_symbols.next, struct sym_entry, node); | |
712 | pthread_mutex_unlock(&active_symbols_lock); | |
713 | ||
714 | list_for_each_entry_safe_from(syme, n, &active_symbols, node) { | |
51a472de | 715 | struct symbol *sym = sym_entry__symbol(syme); |
923c42c1 MG |
716 | |
717 | if (!strcmp(buf, sym->name)) { | |
718 | found = syme; | |
719 | break; | |
720 | } | |
721 | } | |
722 | ||
723 | if (!found) { | |
66aeb6d5 | 724 | fprintf(stderr, "Sorry, %s is not active.\n", buf); |
923c42c1 MG |
725 | sleep(1); |
726 | return; | |
727 | } else | |
728 | parse_source(found); | |
729 | ||
730 | out_free: | |
731 | free(buf); | |
732 | } | |
733 | ||
091bd2e9 | 734 | static void print_mapped_keys(void) |
923c42c1 | 735 | { |
091bd2e9 MG |
736 | char *name = NULL; |
737 | ||
738 | if (sym_filter_entry) { | |
51a472de | 739 | struct symbol *sym = sym_entry__symbol(sym_filter_entry); |
091bd2e9 MG |
740 | name = sym->name; |
741 | } | |
742 | ||
743 | fprintf(stdout, "\nMapped keys:\n"); | |
744 | fprintf(stdout, "\t[d] display refresh delay. \t(%d)\n", delay_secs); | |
745 | fprintf(stdout, "\t[e] display entries (lines). \t(%d)\n", print_entries); | |
746 | ||
747 | if (nr_counters > 1) | |
69aad6f1 | 748 | fprintf(stdout, "\t[E] active event counter. \t(%s)\n", event_name(sym_evsel)); |
091bd2e9 MG |
749 | |
750 | fprintf(stdout, "\t[f] profile display filter (count). \t(%d)\n", count_filter); | |
751 | ||
6cff0e8d KS |
752 | fprintf(stdout, "\t[F] annotate display filter (percent). \t(%d%%)\n", sym_pcnt_filter); |
753 | fprintf(stdout, "\t[s] annotate symbol. \t(%s)\n", name?: "NULL"); | |
754 | fprintf(stdout, "\t[S] stop annotation.\n"); | |
091bd2e9 MG |
755 | |
756 | if (nr_counters > 1) | |
757 | fprintf(stdout, "\t[w] toggle display weighted/count[E]r. \t(%d)\n", display_weighted ? 1 : 0); | |
758 | ||
8ffcda17 | 759 | fprintf(stdout, |
1a72cfa6 | 760 | "\t[K] hide kernel_symbols symbols. \t(%s)\n", |
8ffcda17 ACM |
761 | hide_kernel_symbols ? "yes" : "no"); |
762 | fprintf(stdout, | |
763 | "\t[U] hide user symbols. \t(%s)\n", | |
764 | hide_user_symbols ? "yes" : "no"); | |
46ab9764 | 765 | fprintf(stdout, "\t[z] toggle sample zeroing. \t(%d)\n", zero ? 1 : 0); |
091bd2e9 MG |
766 | fprintf(stdout, "\t[qQ] quit.\n"); |
767 | } | |
768 | ||
769 | static int key_mapped(int c) | |
770 | { | |
771 | switch (c) { | |
772 | case 'd': | |
773 | case 'e': | |
774 | case 'f': | |
775 | case 'z': | |
776 | case 'q': | |
777 | case 'Q': | |
8ffcda17 ACM |
778 | case 'K': |
779 | case 'U': | |
6cff0e8d KS |
780 | case 'F': |
781 | case 's': | |
782 | case 'S': | |
091bd2e9 MG |
783 | return 1; |
784 | case 'E': | |
785 | case 'w': | |
786 | return nr_counters > 1 ? 1 : 0; | |
83a0944f IM |
787 | default: |
788 | break; | |
091bd2e9 MG |
789 | } |
790 | ||
791 | return 0; | |
923c42c1 MG |
792 | } |
793 | ||
a1645ce1 | 794 | static void handle_keypress(struct perf_session *session, int c) |
923c42c1 | 795 | { |
091bd2e9 MG |
796 | if (!key_mapped(c)) { |
797 | struct pollfd stdin_poll = { .fd = 0, .events = POLLIN }; | |
798 | struct termios tc, save; | |
799 | ||
800 | print_mapped_keys(); | |
801 | fprintf(stdout, "\nEnter selection, or unmapped key to continue: "); | |
802 | fflush(stdout); | |
803 | ||
804 | tcgetattr(0, &save); | |
805 | tc = save; | |
806 | tc.c_lflag &= ~(ICANON | ECHO); | |
807 | tc.c_cc[VMIN] = 0; | |
808 | tc.c_cc[VTIME] = 0; | |
809 | tcsetattr(0, TCSANOW, &tc); | |
810 | ||
811 | poll(&stdin_poll, 1, -1); | |
812 | c = getc(stdin); | |
813 | ||
814 | tcsetattr(0, TCSAFLUSH, &save); | |
815 | if (!key_mapped(c)) | |
816 | return; | |
817 | } | |
818 | ||
923c42c1 MG |
819 | switch (c) { |
820 | case 'd': | |
821 | prompt_integer(&delay_secs, "Enter display delay"); | |
dc79959a TB |
822 | if (delay_secs < 1) |
823 | delay_secs = 1; | |
923c42c1 MG |
824 | break; |
825 | case 'e': | |
826 | prompt_integer(&print_entries, "Enter display entries (lines)"); | |
3b6ed988 | 827 | if (print_entries == 0) { |
13cc5079 | 828 | sig_winch_handler(SIGWINCH); |
3b6ed988 ACM |
829 | signal(SIGWINCH, sig_winch_handler); |
830 | } else | |
831 | signal(SIGWINCH, SIG_DFL); | |
923c42c1 MG |
832 | break; |
833 | case 'E': | |
834 | if (nr_counters > 1) { | |
923c42c1 | 835 | fprintf(stderr, "\nAvailable events:"); |
69aad6f1 ACM |
836 | |
837 | list_for_each_entry(sym_evsel, &evsel_list, node) | |
838 | fprintf(stderr, "\n\t%d %s", sym_evsel->idx, event_name(sym_evsel)); | |
923c42c1 MG |
839 | |
840 | prompt_integer(&sym_counter, "Enter details event counter"); | |
841 | ||
842 | if (sym_counter >= nr_counters) { | |
69aad6f1 | 843 | sym_evsel = list_entry(evsel_list.next, struct perf_evsel, node); |
923c42c1 | 844 | sym_counter = 0; |
69aad6f1 | 845 | fprintf(stderr, "Sorry, no such event, using %s.\n", event_name(sym_evsel)); |
923c42c1 | 846 | sleep(1); |
69aad6f1 | 847 | break; |
923c42c1 | 848 | } |
69aad6f1 ACM |
849 | list_for_each_entry(sym_evsel, &evsel_list, node) |
850 | if (sym_evsel->idx == sym_counter) | |
851 | break; | |
923c42c1 MG |
852 | } else sym_counter = 0; |
853 | break; | |
854 | case 'f': | |
855 | prompt_integer(&count_filter, "Enter display event count filter"); | |
856 | break; | |
857 | case 'F': | |
858 | prompt_percent(&sym_pcnt_filter, "Enter details display event filter (percent)"); | |
859 | break; | |
8ffcda17 ACM |
860 | case 'K': |
861 | hide_kernel_symbols = !hide_kernel_symbols; | |
862 | break; | |
923c42c1 MG |
863 | case 'q': |
864 | case 'Q': | |
865 | printf("exiting.\n"); | |
c338aee8 | 866 | if (dump_symtab) |
cbf69680 | 867 | perf_session__fprintf_dsos(session, stderr); |
923c42c1 MG |
868 | exit(0); |
869 | case 's': | |
870 | prompt_symbol(&sym_filter_entry, "Enter details symbol"); | |
871 | break; | |
872 | case 'S': | |
873 | if (!sym_filter_entry) | |
874 | break; | |
875 | else { | |
876 | struct sym_entry *syme = sym_filter_entry; | |
877 | ||
b269876c | 878 | pthread_mutex_lock(&syme->src->lock); |
923c42c1 MG |
879 | sym_filter_entry = NULL; |
880 | __zero_source_counters(syme); | |
b269876c | 881 | pthread_mutex_unlock(&syme->src->lock); |
923c42c1 MG |
882 | } |
883 | break; | |
8ffcda17 ACM |
884 | case 'U': |
885 | hide_user_symbols = !hide_user_symbols; | |
886 | break; | |
46ab9764 MG |
887 | case 'w': |
888 | display_weighted = ~display_weighted; | |
889 | break; | |
923c42c1 | 890 | case 'z': |
c0555642 | 891 | zero = !zero; |
923c42c1 | 892 | break; |
83a0944f IM |
893 | default: |
894 | break; | |
923c42c1 MG |
895 | } |
896 | } | |
897 | ||
f37a291c | 898 | static void *display_thread(void *arg __used) |
07800601 | 899 | { |
0f5486b5 | 900 | struct pollfd stdin_poll = { .fd = 0, .events = POLLIN }; |
923c42c1 MG |
901 | struct termios tc, save; |
902 | int delay_msecs, c; | |
a1645ce1 | 903 | struct perf_session *session = (struct perf_session *) arg; |
923c42c1 MG |
904 | |
905 | tcgetattr(0, &save); | |
906 | tc = save; | |
907 | tc.c_lflag &= ~(ICANON | ECHO); | |
908 | tc.c_cc[VMIN] = 0; | |
909 | tc.c_cc[VTIME] = 0; | |
091bd2e9 | 910 | |
923c42c1 MG |
911 | repeat: |
912 | delay_msecs = delay_secs * 1000; | |
913 | tcsetattr(0, TCSANOW, &tc); | |
914 | /* trash return*/ | |
915 | getc(stdin); | |
07800601 | 916 | |
0f5486b5 | 917 | do { |
07800601 | 918 | print_sym_table(); |
0f5486b5 FW |
919 | } while (!poll(&stdin_poll, 1, delay_msecs) == 1); |
920 | ||
923c42c1 MG |
921 | c = getc(stdin); |
922 | tcsetattr(0, TCSAFLUSH, &save); | |
923 | ||
a1645ce1 | 924 | handle_keypress(session, c); |
923c42c1 | 925 | goto repeat; |
07800601 IM |
926 | |
927 | return NULL; | |
928 | } | |
929 | ||
2ab52083 | 930 | /* Tag samples to be skipped. */ |
f37a291c | 931 | static const char *skip_symbols[] = { |
2ab52083 AB |
932 | "default_idle", |
933 | "cpu_idle", | |
934 | "enter_idle", | |
935 | "exit_idle", | |
936 | "mwait_idle", | |
59b90056 | 937 | "mwait_idle_with_hints", |
8357275b | 938 | "poll_idle", |
3a3393ef AB |
939 | "ppc64_runlatch_off", |
940 | "pseries_dedicated_idle_sleep", | |
2ab52083 AB |
941 | NULL |
942 | }; | |
943 | ||
439d473b | 944 | static int symbol_filter(struct map *map, struct symbol *sym) |
07800601 | 945 | { |
de04687f ACM |
946 | struct sym_entry *syme; |
947 | const char *name = sym->name; | |
2ab52083 | 948 | int i; |
de04687f | 949 | |
3a3393ef AB |
950 | /* |
951 | * ppc64 uses function descriptors and appends a '.' to the | |
952 | * start of every instruction address. Remove it. | |
953 | */ | |
954 | if (name[0] == '.') | |
955 | name++; | |
956 | ||
de04687f ACM |
957 | if (!strcmp(name, "_text") || |
958 | !strcmp(name, "_etext") || | |
959 | !strcmp(name, "_sinittext") || | |
960 | !strncmp("init_module", name, 11) || | |
961 | !strncmp("cleanup_module", name, 14) || | |
962 | strstr(name, "_text_start") || | |
963 | strstr(name, "_text_end")) | |
07800601 | 964 | return 1; |
07800601 | 965 | |
00a192b3 | 966 | syme = symbol__priv(sym); |
439d473b | 967 | syme->map = map; |
b269876c | 968 | syme->src = NULL; |
6cff0e8d KS |
969 | |
970 | if (!sym_filter_entry && sym_filter && !strcmp(name, sym_filter)) { | |
971 | /* schedule initial sym_filter_entry setup */ | |
972 | sym_filter_entry_sched = syme; | |
973 | sym_filter = NULL; | |
974 | } | |
923c42c1 | 975 | |
2ab52083 AB |
976 | for (i = 0; skip_symbols[i]; i++) { |
977 | if (!strcmp(skip_symbols[i], name)) { | |
978 | syme->skip = 1; | |
979 | break; | |
980 | } | |
981 | } | |
07800601 | 982 | |
13cc5079 ACM |
983 | if (!syme->skip) |
984 | syme->name_len = strlen(sym->name); | |
985 | ||
07800601 IM |
986 | return 0; |
987 | } | |
988 | ||
b3165f41 | 989 | static void event__process_sample(const event_t *self, |
9c90a61c | 990 | struct sample_data *sample, |
69aad6f1 ACM |
991 | struct perf_session *session, |
992 | struct perf_evsel *evsel) | |
07800601 | 993 | { |
5b2bb75a | 994 | u64 ip = self->ip.ip; |
5b2bb75a | 995 | struct sym_entry *syme; |
1ed091c4 | 996 | struct addr_location al; |
23346f21 | 997 | struct machine *machine; |
8ffcda17 | 998 | u8 origin = self->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; |
5b2bb75a | 999 | |
24bfef0f ACM |
1000 | ++samples; |
1001 | ||
8ffcda17 | 1002 | switch (origin) { |
1ed091c4 | 1003 | case PERF_RECORD_MISC_USER: |
a1645ce1 | 1004 | ++us_samples; |
8ffcda17 ACM |
1005 | if (hide_user_symbols) |
1006 | return; | |
23346f21 | 1007 | machine = perf_session__find_host_machine(session); |
1ed091c4 | 1008 | break; |
5b2bb75a | 1009 | case PERF_RECORD_MISC_KERNEL: |
a1645ce1 | 1010 | ++kernel_samples; |
8ffcda17 ACM |
1011 | if (hide_kernel_symbols) |
1012 | return; | |
23346f21 | 1013 | machine = perf_session__find_host_machine(session); |
a1645ce1 ZY |
1014 | break; |
1015 | case PERF_RECORD_MISC_GUEST_KERNEL: | |
1016 | ++guest_kernel_samples; | |
23346f21 | 1017 | machine = perf_session__find_machine(session, self->ip.pid); |
5b2bb75a | 1018 | break; |
a1645ce1 ZY |
1019 | case PERF_RECORD_MISC_GUEST_USER: |
1020 | ++guest_us_samples; | |
1021 | /* | |
1022 | * TODO: we don't process guest user from host side | |
1023 | * except simple counting. | |
1024 | */ | |
1025 | return; | |
5b2bb75a ACM |
1026 | default: |
1027 | return; | |
1028 | } | |
1029 | ||
23346f21 | 1030 | if (!machine && perf_guest) { |
a1645ce1 ZY |
1031 | pr_err("Can't find guest [%d]'s kernel information\n", |
1032 | self->ip.pid); | |
1033 | return; | |
1034 | } | |
1035 | ||
ab608344 | 1036 | if (self->header.misc & PERF_RECORD_MISC_EXACT_IP) |
1676b8a0 PZ |
1037 | exact_samples++; |
1038 | ||
9c90a61c | 1039 | if (event__preprocess_sample(self, session, &al, sample, |
41a37e20 | 1040 | symbol_filter) < 0 || |
72b8fa17 | 1041 | al.filtered) |
1ed091c4 | 1042 | return; |
07800601 | 1043 | |
72b8fa17 ACM |
1044 | if (al.sym == NULL) { |
1045 | /* | |
1046 | * As we do lazy loading of symtabs we only will know if the | |
1047 | * specified vmlinux file is invalid when we actually have a | |
1048 | * hit in kernel space and then try to load it. So if we get | |
1049 | * here and there are _no_ symbols in the DSO backing the | |
1050 | * kernel map, bail out. | |
1051 | * | |
1052 | * We may never get here, for instance, if we use -K/ | |
1053 | * --hide-kernel-symbols, even if the user specifies an | |
1054 | * invalid --vmlinux ;-) | |
1055 | */ | |
23346f21 | 1056 | if (al.map == machine->vmlinux_maps[MAP__FUNCTION] && |
72b8fa17 ACM |
1057 | RB_EMPTY_ROOT(&al.map->dso->symbols[MAP__FUNCTION])) { |
1058 | pr_err("The %s file can't be used\n", | |
1059 | symbol_conf.vmlinux_name); | |
1060 | exit(1); | |
1061 | } | |
1062 | ||
1063 | return; | |
1064 | } | |
1065 | ||
6cff0e8d KS |
1066 | /* let's see, whether we need to install initial sym_filter_entry */ |
1067 | if (sym_filter_entry_sched) { | |
1068 | sym_filter_entry = sym_filter_entry_sched; | |
1069 | sym_filter_entry_sched = NULL; | |
b0a9ab62 ACM |
1070 | if (parse_source(sym_filter_entry) < 0) { |
1071 | struct symbol *sym = sym_entry__symbol(sym_filter_entry); | |
1072 | ||
1073 | pr_err("Can't annotate %s", sym->name); | |
1074 | if (sym_filter_entry->map->dso->origin == DSO__ORIG_KERNEL) { | |
1075 | pr_err(": No vmlinux file was found in the path:\n"); | |
5ad90e4e | 1076 | machine__fprintf_vmlinux_path(machine, stderr); |
b0a9ab62 ACM |
1077 | } else |
1078 | pr_err(".\n"); | |
1079 | exit(1); | |
1080 | } | |
6cff0e8d KS |
1081 | } |
1082 | ||
1ed091c4 | 1083 | syme = symbol__priv(al.sym); |
5b2bb75a | 1084 | if (!syme->skip) { |
69aad6f1 | 1085 | syme->count[evsel->idx]++; |
8ffcda17 | 1086 | syme->origin = origin; |
69aad6f1 | 1087 | record_precise_ip(syme, evsel->idx, ip); |
5b2bb75a ACM |
1088 | pthread_mutex_lock(&active_symbols_lock); |
1089 | if (list_empty(&syme->node) || !syme->node.next) | |
1090 | __list_insert_active_sym(syme); | |
1091 | pthread_mutex_unlock(&active_symbols_lock); | |
5b2bb75a | 1092 | } |
07800601 IM |
1093 | } |
1094 | ||
07800601 | 1095 | struct mmap_data { |
a21ca2ca | 1096 | void *base; |
f37a291c | 1097 | int mask; |
a21ca2ca | 1098 | unsigned int prev; |
07800601 IM |
1099 | }; |
1100 | ||
69aad6f1 ACM |
1101 | static int perf_evsel__alloc_mmap_per_thread(struct perf_evsel *evsel, |
1102 | int ncpus, int nthreads) | |
1103 | { | |
1104 | evsel->priv = xyarray__new(ncpus, nthreads, sizeof(struct mmap_data)); | |
1105 | return evsel->priv != NULL ? 0 : -ENOMEM; | |
1106 | } | |
1107 | ||
1108 | static void perf_evsel__free_mmap(struct perf_evsel *evsel) | |
1109 | { | |
1110 | xyarray__delete(evsel->priv); | |
1111 | evsel->priv = NULL; | |
1112 | } | |
1113 | ||
07800601 IM |
1114 | static unsigned int mmap_read_head(struct mmap_data *md) |
1115 | { | |
cdd6c482 | 1116 | struct perf_event_mmap_page *pc = md->base; |
07800601 IM |
1117 | int head; |
1118 | ||
1119 | head = pc->data_head; | |
1120 | rmb(); | |
1121 | ||
1122 | return head; | |
1123 | } | |
1124 | ||
d8f66248 | 1125 | static void perf_session__mmap_read_counter(struct perf_session *self, |
69aad6f1 ACM |
1126 | struct perf_evsel *evsel, |
1127 | int cpu, int thread_idx) | |
07800601 | 1128 | { |
69aad6f1 ACM |
1129 | struct xyarray *mmap_array = evsel->priv; |
1130 | struct mmap_data *md = xyarray__entry(mmap_array, cpu, thread_idx); | |
07800601 IM |
1131 | unsigned int head = mmap_read_head(md); |
1132 | unsigned int old = md->prev; | |
1133 | unsigned char *data = md->base + page_size; | |
9c90a61c | 1134 | struct sample_data sample; |
07800601 IM |
1135 | int diff; |
1136 | ||
07800601 IM |
1137 | /* |
1138 | * If we're further behind than half the buffer, there's a chance | |
2debbc83 | 1139 | * the writer will bite our tail and mess up the samples under us. |
07800601 IM |
1140 | * |
1141 | * If we somehow ended up ahead of the head, we got messed up. | |
1142 | * | |
1143 | * In either case, truncate and restart at head. | |
1144 | */ | |
1145 | diff = head - old; | |
1146 | if (diff > md->mask / 2 || diff < 0) { | |
f4f0b418 | 1147 | fprintf(stderr, "WARNING: failed to keep up with mmap data.\n"); |
07800601 IM |
1148 | |
1149 | /* | |
1150 | * head points to a known good entry, start there. | |
1151 | */ | |
1152 | old = head; | |
1153 | } | |
1154 | ||
07800601 | 1155 | for (; old != head;) { |
07800601 IM |
1156 | event_t *event = (event_t *)&data[old & md->mask]; |
1157 | ||
1158 | event_t event_copy; | |
1159 | ||
6f06ccbc | 1160 | size_t size = event->header.size; |
07800601 IM |
1161 | |
1162 | /* | |
1163 | * Event straddles the mmap boundary -- header should always | |
1164 | * be inside due to u64 alignment of output. | |
1165 | */ | |
1166 | if ((old & md->mask) + size != ((old + size) & md->mask)) { | |
1167 | unsigned int offset = old; | |
1168 | unsigned int len = min(sizeof(*event), size), cpy; | |
1169 | void *dst = &event_copy; | |
1170 | ||
1171 | do { | |
1172 | cpy = min(md->mask + 1 - (offset & md->mask), len); | |
1173 | memcpy(dst, &data[offset & md->mask], cpy); | |
1174 | offset += cpy; | |
1175 | dst += cpy; | |
1176 | len -= cpy; | |
1177 | } while (len); | |
1178 | ||
1179 | event = &event_copy; | |
1180 | } | |
1181 | ||
9c90a61c | 1182 | event__parse_sample(event, self, &sample); |
5b2bb75a | 1183 | if (event->header.type == PERF_RECORD_SAMPLE) |
69aad6f1 | 1184 | event__process_sample(event, &sample, self, evsel); |
5b2bb75a | 1185 | else |
9c90a61c | 1186 | event__process(event, &sample, self); |
07800601 | 1187 | old += size; |
07800601 IM |
1188 | } |
1189 | ||
1190 | md->prev = old; | |
1191 | } | |
1192 | ||
d6d901c2 | 1193 | static struct pollfd *event_array; |
c2990a2a | 1194 | |
d8f66248 | 1195 | static void perf_session__mmap_read(struct perf_session *self) |
2f01190a | 1196 | { |
69aad6f1 ACM |
1197 | struct perf_evsel *counter; |
1198 | int i, thread_index; | |
2f01190a | 1199 | |
60d567e2 | 1200 | for (i = 0; i < cpus->nr; i++) { |
69aad6f1 | 1201 | list_for_each_entry(counter, &evsel_list, node) { |
d6d901c2 | 1202 | for (thread_index = 0; |
5c98d466 | 1203 | thread_index < threads->nr; |
d6d901c2 ZY |
1204 | thread_index++) { |
1205 | perf_session__mmap_read_counter(self, | |
69aad6f1 | 1206 | counter, i, thread_index); |
d6d901c2 | 1207 | } |
69aad6f1 | 1208 | } |
2f01190a FW |
1209 | } |
1210 | } | |
1211 | ||
716c69fe IM |
1212 | int nr_poll; |
1213 | int group_fd; | |
1214 | ||
69aad6f1 | 1215 | static void start_counter(int i, struct perf_evsel *evsel) |
07800601 | 1216 | { |
69aad6f1 ACM |
1217 | struct xyarray *mmap_array = evsel->priv; |
1218 | struct mmap_data *mm; | |
cdd6c482 | 1219 | struct perf_event_attr *attr; |
01797c59 | 1220 | int cpu = -1; |
d6d901c2 | 1221 | int thread_index; |
716c69fe | 1222 | |
01797c59 | 1223 | if (target_tid == -1) |
60d567e2 | 1224 | cpu = cpus->map[i]; |
716c69fe | 1225 | |
69aad6f1 | 1226 | attr = &evsel->attr; |
716c69fe IM |
1227 | |
1228 | attr->sample_type = PERF_SAMPLE_IP | PERF_SAMPLE_TID; | |
7e4ff9e3 MG |
1229 | |
1230 | if (freq) { | |
1231 | attr->sample_type |= PERF_SAMPLE_PERIOD; | |
1232 | attr->freq = 1; | |
1233 | attr->sample_freq = freq; | |
1234 | } | |
1235 | ||
0fdc7e67 | 1236 | attr->inherit = (cpu < 0) && inherit; |
5b2bb75a | 1237 | attr->mmap = 1; |
716c69fe | 1238 | |
5c98d466 | 1239 | for (thread_index = 0; thread_index < threads->nr; thread_index++) { |
716c69fe | 1240 | try_again: |
69aad6f1 | 1241 | FD(evsel, i, thread_index) = sys_perf_event_open(attr, |
5c98d466 | 1242 | threads->map[thread_index], cpu, group_fd, 0); |
d6d901c2 | 1243 | |
69aad6f1 | 1244 | if (FD(evsel, i, thread_index) < 0) { |
d6d901c2 ZY |
1245 | int err = errno; |
1246 | ||
1247 | if (err == EPERM || err == EACCES) | |
d9cf837e CA |
1248 | die("Permission error - are you root?\n" |
1249 | "\t Consider tweaking" | |
1250 | " /proc/sys/kernel/perf_event_paranoid.\n"); | |
d6d901c2 ZY |
1251 | /* |
1252 | * If it's cycles then fall back to hrtimer | |
1253 | * based cpu-clock-tick sw counter, which | |
1254 | * is always available even if no PMU support: | |
1255 | */ | |
1256 | if (attr->type == PERF_TYPE_HARDWARE | |
1257 | && attr->config == PERF_COUNT_HW_CPU_CYCLES) { | |
1258 | ||
1259 | if (verbose) | |
1260 | warning(" ... trying to fall back to cpu-clock-ticks\n"); | |
1261 | ||
1262 | attr->type = PERF_TYPE_SOFTWARE; | |
1263 | attr->config = PERF_COUNT_SW_CPU_CLOCK; | |
1264 | goto try_again; | |
1265 | } | |
1266 | printf("\n"); | |
d9cf837e | 1267 | error("sys_perf_event_open() syscall returned with %d (%s). /bin/dmesg may provide additional information.\n", |
69aad6f1 | 1268 | FD(evsel, i, thread_index), strerror(err)); |
d6d901c2 ZY |
1269 | die("No CONFIG_PERF_EVENTS=y kernel support configured?\n"); |
1270 | exit(-1); | |
1271 | } | |
69aad6f1 ACM |
1272 | assert(FD(evsel, i, thread_index) >= 0); |
1273 | fcntl(FD(evsel, i, thread_index), F_SETFL, O_NONBLOCK); | |
716c69fe | 1274 | |
716c69fe | 1275 | /* |
d6d901c2 | 1276 | * First counter acts as the group leader: |
716c69fe | 1277 | */ |
d6d901c2 | 1278 | if (group && group_fd == -1) |
69aad6f1 | 1279 | group_fd = FD(evsel, i, thread_index); |
d6d901c2 | 1280 | |
69aad6f1 | 1281 | event_array[nr_poll].fd = FD(evsel, i, thread_index); |
d6d901c2 ZY |
1282 | event_array[nr_poll].events = POLLIN; |
1283 | nr_poll++; | |
1284 | ||
69aad6f1 ACM |
1285 | mm = xyarray__entry(mmap_array, i, thread_index); |
1286 | mm->prev = 0; | |
1287 | mm->mask = mmap_pages*page_size - 1; | |
1288 | mm->base = mmap(NULL, (mmap_pages+1)*page_size, | |
1289 | PROT_READ, MAP_SHARED, FD(evsel, i, thread_index), 0); | |
1290 | if (mm->base == MAP_FAILED) | |
d6d901c2 | 1291 | die("failed to mmap with %d (%s)\n", errno, strerror(errno)); |
716c69fe | 1292 | } |
716c69fe IM |
1293 | } |
1294 | ||
1295 | static int __cmd_top(void) | |
1296 | { | |
1297 | pthread_t thread; | |
69aad6f1 ACM |
1298 | struct perf_evsel *counter; |
1299 | int i, ret; | |
d8f66248 | 1300 | /* |
b3165f41 ACM |
1301 | * FIXME: perf_session__new should allow passing a O_MMAP, so that all this |
1302 | * mmap reading, etc is encapsulated in it. Use O_WRONLY for now. | |
d8f66248 | 1303 | */ |
21ef97f0 | 1304 | struct perf_session *session = perf_session__new(NULL, O_WRONLY, false, false, NULL); |
b3165f41 ACM |
1305 | if (session == NULL) |
1306 | return -ENOMEM; | |
07800601 | 1307 | |
d6d901c2 | 1308 | if (target_tid != -1) |
401b8e13 | 1309 | event__synthesize_thread_map(threads, event__process, session); |
5b2bb75a | 1310 | else |
d8f66248 | 1311 | event__synthesize_threads(event__process, session); |
5b2bb75a | 1312 | |
60d567e2 | 1313 | for (i = 0; i < cpus->nr; i++) { |
07800601 | 1314 | group_fd = -1; |
69aad6f1 | 1315 | list_for_each_entry(counter, &evsel_list, node) |
716c69fe | 1316 | start_counter(i, counter); |
07800601 IM |
1317 | } |
1318 | ||
2f01190a | 1319 | /* Wait for a minimal set of events before starting the snapshot */ |
d6d901c2 | 1320 | poll(&event_array[0], nr_poll, 100); |
2f01190a | 1321 | |
d8f66248 | 1322 | perf_session__mmap_read(session); |
2f01190a | 1323 | |
a1645ce1 | 1324 | if (pthread_create(&thread, NULL, display_thread, session)) { |
07800601 IM |
1325 | printf("Could not create display thread.\n"); |
1326 | exit(-1); | |
1327 | } | |
1328 | ||
1329 | if (realtime_prio) { | |
1330 | struct sched_param param; | |
1331 | ||
1332 | param.sched_priority = realtime_prio; | |
1333 | if (sched_setscheduler(0, SCHED_FIFO, ¶m)) { | |
1334 | printf("Could not set realtime priority.\n"); | |
1335 | exit(-1); | |
1336 | } | |
1337 | } | |
1338 | ||
1339 | while (1) { | |
2debbc83 | 1340 | int hits = samples; |
07800601 | 1341 | |
d8f66248 | 1342 | perf_session__mmap_read(session); |
07800601 | 1343 | |
2debbc83 | 1344 | if (hits == samples) |
07800601 IM |
1345 | ret = poll(event_array, nr_poll, 100); |
1346 | } | |
1347 | ||
1348 | return 0; | |
1349 | } | |
b456bae0 IM |
1350 | |
1351 | static const char * const top_usage[] = { | |
1352 | "perf top [<options>]", | |
1353 | NULL | |
1354 | }; | |
1355 | ||
b456bae0 IM |
1356 | static const struct option options[] = { |
1357 | OPT_CALLBACK('e', "event", NULL, "event", | |
86847b62 TG |
1358 | "event selector. use 'perf list' to list available events", |
1359 | parse_events), | |
b456bae0 IM |
1360 | OPT_INTEGER('c', "count", &default_interval, |
1361 | "event period to sample"), | |
1362 | OPT_INTEGER('p', "pid", &target_pid, | |
d6d901c2 ZY |
1363 | "profile events on existing process id"), |
1364 | OPT_INTEGER('t', "tid", &target_tid, | |
1365 | "profile events on existing thread id"), | |
b456bae0 IM |
1366 | OPT_BOOLEAN('a', "all-cpus", &system_wide, |
1367 | "system-wide collection from all CPUs"), | |
c45c6ea2 SE |
1368 | OPT_STRING('C', "cpu", &cpu_list, "cpu", |
1369 | "list of cpus to monitor"), | |
b32d133a ACM |
1370 | OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name, |
1371 | "file", "vmlinux pathname"), | |
8ffcda17 ACM |
1372 | OPT_BOOLEAN('K', "hide_kernel_symbols", &hide_kernel_symbols, |
1373 | "hide kernel symbols"), | |
1967936d | 1374 | OPT_UINTEGER('m', "mmap-pages", &mmap_pages, "number of mmap data pages"), |
b456bae0 IM |
1375 | OPT_INTEGER('r', "realtime", &realtime_prio, |
1376 | "collect data with this RT SCHED_FIFO priority"), | |
db20c003 | 1377 | OPT_INTEGER('d', "delay", &delay_secs, |
b456bae0 IM |
1378 | "number of seconds to delay between refreshes"), |
1379 | OPT_BOOLEAN('D', "dump-symtab", &dump_symtab, | |
1380 | "dump the symbol table used for profiling"), | |
6e53cdf1 | 1381 | OPT_INTEGER('f', "count-filter", &count_filter, |
b456bae0 IM |
1382 | "only display functions with more events than this"), |
1383 | OPT_BOOLEAN('g', "group", &group, | |
1384 | "put the counters into a counter group"), | |
0fdc7e67 MG |
1385 | OPT_BOOLEAN('i', "inherit", &inherit, |
1386 | "child tasks inherit counters"), | |
923c42c1 | 1387 | OPT_STRING('s', "sym-annotate", &sym_filter, "symbol name", |
6cff0e8d | 1388 | "symbol to annotate"), |
1f208ea6 | 1389 | OPT_BOOLEAN('z', "zero", &zero, |
b456bae0 | 1390 | "zero history across updates"), |
6e53cdf1 | 1391 | OPT_INTEGER('F', "freq", &freq, |
b456bae0 | 1392 | "profile at this frequency"), |
6e53cdf1 IM |
1393 | OPT_INTEGER('E', "entries", &print_entries, |
1394 | "display this many functions"), | |
8ffcda17 ACM |
1395 | OPT_BOOLEAN('U', "hide_user_symbols", &hide_user_symbols, |
1396 | "hide user symbols"), | |
c0555642 | 1397 | OPT_INCR('v', "verbose", &verbose, |
3da297a6 | 1398 | "be more verbose (show counter open errors, etc)"), |
b456bae0 IM |
1399 | OPT_END() |
1400 | }; | |
1401 | ||
f37a291c | 1402 | int cmd_top(int argc, const char **argv, const char *prefix __used) |
b456bae0 | 1403 | { |
69aad6f1 ACM |
1404 | struct perf_evsel *pos; |
1405 | int status = -ENOMEM; | |
b456bae0 IM |
1406 | |
1407 | page_size = sysconf(_SC_PAGE_SIZE); | |
1408 | ||
b456bae0 IM |
1409 | argc = parse_options(argc, argv, options, top_usage, 0); |
1410 | if (argc) | |
1411 | usage_with_options(top_usage, options); | |
1412 | ||
5c98d466 | 1413 | if (target_pid != -1) |
d6d901c2 | 1414 | target_tid = target_pid; |
d6d901c2 | 1415 | |
5c98d466 ACM |
1416 | threads = thread_map__new(target_pid, target_tid); |
1417 | if (threads == NULL) { | |
1418 | pr_err("Problems finding threads of monitor\n"); | |
1419 | usage_with_options(top_usage, options); | |
d6d901c2 ZY |
1420 | } |
1421 | ||
5c98d466 ACM |
1422 | event_array = malloc((sizeof(struct pollfd) * |
1423 | MAX_NR_CPUS * MAX_COUNTERS * threads->nr)); | |
d6d901c2 ZY |
1424 | if (!event_array) |
1425 | return -ENOMEM; | |
1426 | ||
b456bae0 | 1427 | /* CPU and PID are mutually exclusive */ |
c45c6ea2 | 1428 | if (target_tid > 0 && cpu_list) { |
b456bae0 IM |
1429 | printf("WARNING: PID switch overriding CPU\n"); |
1430 | sleep(1); | |
c45c6ea2 | 1431 | cpu_list = NULL; |
b456bae0 IM |
1432 | } |
1433 | ||
69aad6f1 ACM |
1434 | if (!nr_counters && perf_evsel_list__create_default() < 0) { |
1435 | pr_err("Not enough memory for event selector list\n"); | |
1436 | return -ENOMEM; | |
1437 | } | |
5a8e5a30 | 1438 | |
2f335a02 FW |
1439 | if (delay_secs < 1) |
1440 | delay_secs = 1; | |
1441 | ||
7e4ff9e3 MG |
1442 | /* |
1443 | * User specified count overrides default frequency. | |
1444 | */ | |
1445 | if (default_interval) | |
1446 | freq = 0; | |
1447 | else if (freq) { | |
1448 | default_interval = freq; | |
1449 | } else { | |
1450 | fprintf(stderr, "frequency and count are zero, aborting\n"); | |
1451 | exit(EXIT_FAILURE); | |
1452 | } | |
1453 | ||
c45c6ea2 | 1454 | if (target_tid != -1) |
60d567e2 | 1455 | cpus = cpu_map__dummy_new(); |
a12b51c4 | 1456 | else |
60d567e2 | 1457 | cpus = cpu_map__new(cpu_list); |
c45c6ea2 | 1458 | |
60d567e2 | 1459 | if (cpus == NULL) |
c45c6ea2 | 1460 | usage_with_options(top_usage, options); |
b456bae0 | 1461 | |
69aad6f1 | 1462 | list_for_each_entry(pos, &evsel_list, node) { |
5c98d466 ACM |
1463 | if (perf_evsel__alloc_mmap_per_thread(pos, cpus->nr, threads->nr) < 0 || |
1464 | perf_evsel__alloc_fd(pos, cpus->nr, threads->nr) < 0) | |
69aad6f1 ACM |
1465 | goto out_free_fd; |
1466 | /* | |
1467 | * Fill in the ones not specifically initialized via -c: | |
1468 | */ | |
1469 | if (pos->attr.sample_period) | |
1470 | continue; | |
1471 | ||
1472 | pos->attr.sample_period = default_interval; | |
1473 | } | |
1474 | ||
cc841580 ACM |
1475 | sym_evsel = list_entry(evsel_list.next, struct perf_evsel, node); |
1476 | ||
69aad6f1 ACM |
1477 | symbol_conf.priv_size = (sizeof(struct sym_entry) + |
1478 | (nr_counters + 1) * sizeof(unsigned long)); | |
1479 | ||
1480 | symbol_conf.try_vmlinux_path = (symbol_conf.vmlinux_name == NULL); | |
1481 | if (symbol__init() < 0) | |
1482 | return -1; | |
1483 | ||
13cc5079 | 1484 | get_term_dimensions(&winsize); |
3b6ed988 | 1485 | if (print_entries == 0) { |
13cc5079 | 1486 | update_print_entries(&winsize); |
3b6ed988 ACM |
1487 | signal(SIGWINCH, sig_winch_handler); |
1488 | } | |
1489 | ||
69aad6f1 ACM |
1490 | status = __cmd_top(); |
1491 | out_free_fd: | |
70d544d0 | 1492 | list_for_each_entry(pos, &evsel_list, node) |
69aad6f1 | 1493 | perf_evsel__free_mmap(pos); |
bd3bfe9e | 1494 | perf_evsel_list__delete(); |
69aad6f1 ACM |
1495 | |
1496 | return status; | |
b456bae0 | 1497 | } |