]>
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" |
361c99a6 | 24 | #include "util/evlist.h" |
69aad6f1 | 25 | #include "util/evsel.h" |
b3165f41 ACM |
26 | #include "util/session.h" |
27 | #include "util/symbol.h" | |
439d473b | 28 | #include "util/thread.h" |
fd78260b | 29 | #include "util/thread_map.h" |
148be2c1 | 30 | #include "util/util.h" |
43cbcd8a | 31 | #include <linux/rbtree.h> |
b456bae0 IM |
32 | #include "util/parse-options.h" |
33 | #include "util/parse-events.h" | |
a12b51c4 | 34 | #include "util/cpumap.h" |
69aad6f1 | 35 | #include "util/xyarray.h" |
07800601 | 36 | |
8f28827a FW |
37 | #include "util/debug.h" |
38 | ||
07800601 IM |
39 | #include <assert.h> |
40 | #include <fcntl.h> | |
0e9b20b8 | 41 | |
07800601 | 42 | #include <stdio.h> |
923c42c1 MG |
43 | #include <termios.h> |
44 | #include <unistd.h> | |
9486aa38 | 45 | #include <inttypes.h> |
0e9b20b8 | 46 | |
07800601 | 47 | #include <errno.h> |
07800601 IM |
48 | #include <time.h> |
49 | #include <sched.h> | |
50 | #include <pthread.h> | |
51 | ||
52 | #include <sys/syscall.h> | |
53 | #include <sys/ioctl.h> | |
54 | #include <sys/poll.h> | |
55 | #include <sys/prctl.h> | |
56 | #include <sys/wait.h> | |
57 | #include <sys/uio.h> | |
58 | #include <sys/mman.h> | |
59 | ||
60 | #include <linux/unistd.h> | |
61 | #include <linux/types.h> | |
62 | ||
69aad6f1 | 63 | #define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y)) |
07800601 | 64 | |
361c99a6 ACM |
65 | struct perf_evlist *evsel_list; |
66 | ||
c0555642 | 67 | static bool system_wide = false; |
07800601 | 68 | |
7e4ff9e3 | 69 | static int default_interval = 0; |
07800601 | 70 | |
42e59d7d | 71 | static int count_filter = 5; |
3b6ed988 | 72 | static int print_entries; |
07800601 | 73 | |
42e59d7d | 74 | static int target_pid = -1; |
d6d901c2 | 75 | static int target_tid = -1; |
c0555642 | 76 | static bool inherit = false; |
1967936d | 77 | static int realtime_prio = 0; |
c0555642 | 78 | static bool group = false; |
07800601 | 79 | static unsigned int page_size; |
70db7533 | 80 | static unsigned int mmap_pages = 128; |
42e59d7d | 81 | static int freq = 1000; /* 1 KHz */ |
07800601 | 82 | |
42e59d7d | 83 | static int delay_secs = 2; |
c0555642 IM |
84 | static bool zero = false; |
85 | static bool dump_symtab = false; | |
07800601 | 86 | |
8ffcda17 ACM |
87 | static bool hide_kernel_symbols = false; |
88 | static bool hide_user_symbols = false; | |
13cc5079 | 89 | static struct winsize winsize; |
8ffcda17 | 90 | |
923c42c1 MG |
91 | /* |
92 | * Source | |
93 | */ | |
94 | ||
95 | struct source_line { | |
96 | u64 eip; | |
97 | unsigned long count[MAX_COUNTERS]; | |
98 | char *line; | |
99 | struct source_line *next; | |
100 | }; | |
101 | ||
edb7c60e | 102 | static const char *sym_filter = NULL; |
42e59d7d | 103 | struct sym_entry *sym_filter_entry = NULL; |
6cff0e8d | 104 | struct sym_entry *sym_filter_entry_sched = NULL; |
42e59d7d IM |
105 | static int sym_pcnt_filter = 5; |
106 | static int sym_counter = 0; | |
69aad6f1 | 107 | static struct perf_evsel *sym_evsel = NULL; |
42e59d7d | 108 | static int display_weighted = -1; |
c45c6ea2 | 109 | static const char *cpu_list; |
923c42c1 | 110 | |
07800601 IM |
111 | /* |
112 | * Symbols | |
113 | */ | |
114 | ||
b269876c ACM |
115 | struct sym_entry_source { |
116 | struct source_line *source; | |
117 | struct source_line *lines; | |
118 | struct source_line **lines_tail; | |
119 | pthread_mutex_t lock; | |
120 | }; | |
121 | ||
07800601 | 122 | struct sym_entry { |
de04687f ACM |
123 | struct rb_node rb_node; |
124 | struct list_head node; | |
c44613a4 ACM |
125 | unsigned long snap_count; |
126 | double weight; | |
07800601 | 127 | int skip; |
13cc5079 | 128 | u16 name_len; |
8ffcda17 | 129 | u8 origin; |
439d473b | 130 | struct map *map; |
b269876c | 131 | struct sym_entry_source *src; |
5a8e5a30 | 132 | unsigned long count[0]; |
07800601 IM |
133 | }; |
134 | ||
923c42c1 MG |
135 | /* |
136 | * Source functions | |
137 | */ | |
138 | ||
51a472de ACM |
139 | static inline struct symbol *sym_entry__symbol(struct sym_entry *self) |
140 | { | |
b32d133a | 141 | return ((void *)self) + symbol_conf.priv_size; |
51a472de ACM |
142 | } |
143 | ||
895f0edc | 144 | void get_term_dimensions(struct winsize *ws) |
3b6ed988 | 145 | { |
13cc5079 ACM |
146 | char *s = getenv("LINES"); |
147 | ||
148 | if (s != NULL) { | |
149 | ws->ws_row = atoi(s); | |
150 | s = getenv("COLUMNS"); | |
151 | if (s != NULL) { | |
152 | ws->ws_col = atoi(s); | |
153 | if (ws->ws_row && ws->ws_col) | |
154 | return; | |
155 | } | |
3b6ed988 | 156 | } |
13cc5079 ACM |
157 | #ifdef TIOCGWINSZ |
158 | if (ioctl(1, TIOCGWINSZ, ws) == 0 && | |
159 | ws->ws_row && ws->ws_col) | |
160 | return; | |
3b6ed988 | 161 | #endif |
13cc5079 ACM |
162 | ws->ws_row = 25; |
163 | ws->ws_col = 80; | |
3b6ed988 ACM |
164 | } |
165 | ||
13cc5079 | 166 | static void update_print_entries(struct winsize *ws) |
3b6ed988 | 167 | { |
13cc5079 ACM |
168 | print_entries = ws->ws_row; |
169 | ||
3b6ed988 ACM |
170 | if (print_entries > 9) |
171 | print_entries -= 9; | |
172 | } | |
173 | ||
174 | static void sig_winch_handler(int sig __used) | |
175 | { | |
13cc5079 ACM |
176 | get_term_dimensions(&winsize); |
177 | update_print_entries(&winsize); | |
3b6ed988 ACM |
178 | } |
179 | ||
b0a9ab62 | 180 | static int parse_source(struct sym_entry *syme) |
923c42c1 MG |
181 | { |
182 | struct symbol *sym; | |
b269876c | 183 | struct sym_entry_source *source; |
439d473b | 184 | struct map *map; |
923c42c1 | 185 | FILE *file; |
83a0944f | 186 | char command[PATH_MAX*2]; |
439d473b ACM |
187 | const char *path; |
188 | u64 len; | |
923c42c1 MG |
189 | |
190 | if (!syme) | |
b0a9ab62 ACM |
191 | return -1; |
192 | ||
193 | sym = sym_entry__symbol(syme); | |
194 | map = syme->map; | |
195 | ||
196 | /* | |
197 | * We can't annotate with just /proc/kallsyms | |
198 | */ | |
199 | if (map->dso->origin == DSO__ORIG_KERNEL) | |
200 | return -1; | |
923c42c1 | 201 | |
b269876c | 202 | if (syme->src == NULL) { |
36479484 | 203 | syme->src = zalloc(sizeof(*source)); |
b269876c | 204 | if (syme->src == NULL) |
b0a9ab62 | 205 | return -1; |
b269876c ACM |
206 | pthread_mutex_init(&syme->src->lock, NULL); |
207 | } | |
208 | ||
209 | source = syme->src; | |
210 | ||
211 | if (source->lines) { | |
212 | pthread_mutex_lock(&source->lock); | |
923c42c1 MG |
213 | goto out_assign; |
214 | } | |
439d473b | 215 | path = map->dso->long_name; |
923c42c1 | 216 | |
923c42c1 MG |
217 | len = sym->end - sym->start; |
218 | ||
439d473b | 219 | sprintf(command, |
9486aa38 | 220 | "objdump --start-address=%#0*" PRIx64 " --stop-address=%#0*" PRIx64 " -dS %s", |
5f485364 ACM |
221 | BITS_PER_LONG / 4, map__rip_2objdump(map, sym->start), |
222 | BITS_PER_LONG / 4, map__rip_2objdump(map, sym->end), path); | |
923c42c1 MG |
223 | |
224 | file = popen(command, "r"); | |
225 | if (!file) | |
b0a9ab62 | 226 | return -1; |
923c42c1 | 227 | |
b269876c ACM |
228 | pthread_mutex_lock(&source->lock); |
229 | source->lines_tail = &source->lines; | |
923c42c1 MG |
230 | while (!feof(file)) { |
231 | struct source_line *src; | |
232 | size_t dummy = 0; | |
ee11b90b | 233 | char *c, *sep; |
923c42c1 MG |
234 | |
235 | src = malloc(sizeof(struct source_line)); | |
236 | assert(src != NULL); | |
237 | memset(src, 0, sizeof(struct source_line)); | |
238 | ||
239 | if (getline(&src->line, &dummy, file) < 0) | |
240 | break; | |
241 | if (!src->line) | |
242 | break; | |
243 | ||
244 | c = strchr(src->line, '\n'); | |
245 | if (c) | |
246 | *c = 0; | |
247 | ||
248 | src->next = NULL; | |
b269876c ACM |
249 | *source->lines_tail = src; |
250 | source->lines_tail = &src->next; | |
923c42c1 | 251 | |
ee11b90b KS |
252 | src->eip = strtoull(src->line, &sep, 16); |
253 | if (*sep == ':') | |
254 | src->eip = map__objdump_2ip(map, src->eip); | |
255 | else /* this line has no ip info (e.g. source line) */ | |
256 | src->eip = 0; | |
923c42c1 MG |
257 | } |
258 | pclose(file); | |
259 | out_assign: | |
260 | sym_filter_entry = syme; | |
b269876c | 261 | pthread_mutex_unlock(&source->lock); |
b0a9ab62 | 262 | return 0; |
923c42c1 MG |
263 | } |
264 | ||
265 | static void __zero_source_counters(struct sym_entry *syme) | |
266 | { | |
267 | int i; | |
268 | struct source_line *line; | |
269 | ||
b269876c | 270 | line = syme->src->lines; |
923c42c1 | 271 | while (line) { |
361c99a6 | 272 | for (i = 0; i < evsel_list->nr_entries; i++) |
923c42c1 MG |
273 | line->count[i] = 0; |
274 | line = line->next; | |
275 | } | |
276 | } | |
277 | ||
278 | static void record_precise_ip(struct sym_entry *syme, int counter, u64 ip) | |
279 | { | |
280 | struct source_line *line; | |
281 | ||
282 | if (syme != sym_filter_entry) | |
283 | return; | |
284 | ||
b269876c | 285 | if (pthread_mutex_trylock(&syme->src->lock)) |
923c42c1 MG |
286 | return; |
287 | ||
b269876c | 288 | if (syme->src == NULL || syme->src->source == NULL) |
923c42c1 MG |
289 | goto out_unlock; |
290 | ||
b269876c | 291 | for (line = syme->src->lines; line; line = line->next) { |
ee11b90b KS |
292 | /* skip lines without IP info */ |
293 | if (line->eip == 0) | |
294 | continue; | |
923c42c1 MG |
295 | if (line->eip == ip) { |
296 | line->count[counter]++; | |
297 | break; | |
298 | } | |
299 | if (line->eip > ip) | |
300 | break; | |
301 | } | |
302 | out_unlock: | |
b269876c | 303 | pthread_mutex_unlock(&syme->src->lock); |
923c42c1 MG |
304 | } |
305 | ||
c7ad21af ACM |
306 | #define PATTERN_LEN (BITS_PER_LONG / 4 + 2) |
307 | ||
923c42c1 MG |
308 | static void lookup_sym_source(struct sym_entry *syme) |
309 | { | |
51a472de | 310 | struct symbol *symbol = sym_entry__symbol(syme); |
923c42c1 | 311 | struct source_line *line; |
c7ad21af | 312 | char pattern[PATTERN_LEN + 1]; |
923c42c1 | 313 | |
9486aa38 | 314 | sprintf(pattern, "%0*" PRIx64 " <", BITS_PER_LONG / 4, |
5f485364 | 315 | map__rip_2objdump(syme->map, symbol->start)); |
923c42c1 | 316 | |
b269876c ACM |
317 | pthread_mutex_lock(&syme->src->lock); |
318 | for (line = syme->src->lines; line; line = line->next) { | |
c7ad21af | 319 | if (memcmp(line->line, pattern, PATTERN_LEN) == 0) { |
b269876c | 320 | syme->src->source = line; |
923c42c1 MG |
321 | break; |
322 | } | |
323 | } | |
b269876c | 324 | pthread_mutex_unlock(&syme->src->lock); |
923c42c1 MG |
325 | } |
326 | ||
327 | static void show_lines(struct source_line *queue, int count, int total) | |
328 | { | |
329 | int i; | |
330 | struct source_line *line; | |
331 | ||
332 | line = queue; | |
333 | for (i = 0; i < count; i++) { | |
334 | float pcnt = 100.0*(float)line->count[sym_counter]/(float)total; | |
335 | ||
336 | printf("%8li %4.1f%%\t%s\n", line->count[sym_counter], pcnt, line->line); | |
337 | line = line->next; | |
338 | } | |
339 | } | |
340 | ||
341 | #define TRACE_COUNT 3 | |
342 | ||
343 | static void show_details(struct sym_entry *syme) | |
344 | { | |
345 | struct symbol *symbol; | |
346 | struct source_line *line; | |
347 | struct source_line *line_queue = NULL; | |
348 | int displayed = 0; | |
349 | int line_queue_count = 0, total = 0, more = 0; | |
350 | ||
351 | if (!syme) | |
352 | return; | |
353 | ||
b269876c | 354 | if (!syme->src->source) |
923c42c1 MG |
355 | lookup_sym_source(syme); |
356 | ||
b269876c | 357 | if (!syme->src->source) |
923c42c1 MG |
358 | return; |
359 | ||
51a472de | 360 | symbol = sym_entry__symbol(syme); |
69aad6f1 | 361 | printf("Showing %s for %s\n", event_name(sym_evsel), symbol->name); |
923c42c1 MG |
362 | printf(" Events Pcnt (>=%d%%)\n", sym_pcnt_filter); |
363 | ||
b269876c ACM |
364 | pthread_mutex_lock(&syme->src->lock); |
365 | line = syme->src->source; | |
923c42c1 MG |
366 | while (line) { |
367 | total += line->count[sym_counter]; | |
368 | line = line->next; | |
369 | } | |
370 | ||
b269876c | 371 | line = syme->src->source; |
923c42c1 MG |
372 | while (line) { |
373 | float pcnt = 0.0; | |
374 | ||
375 | if (!line_queue_count) | |
376 | line_queue = line; | |
377 | line_queue_count++; | |
378 | ||
379 | if (line->count[sym_counter]) | |
380 | pcnt = 100.0 * line->count[sym_counter] / (float)total; | |
381 | if (pcnt >= (float)sym_pcnt_filter) { | |
382 | if (displayed <= print_entries) | |
383 | show_lines(line_queue, line_queue_count, total); | |
384 | else more++; | |
385 | displayed += line_queue_count; | |
386 | line_queue_count = 0; | |
387 | line_queue = NULL; | |
388 | } else if (line_queue_count > TRACE_COUNT) { | |
389 | line_queue = line_queue->next; | |
390 | line_queue_count--; | |
391 | } | |
392 | ||
393 | line->count[sym_counter] = zero ? 0 : line->count[sym_counter] * 7 / 8; | |
394 | line = line->next; | |
395 | } | |
b269876c | 396 | pthread_mutex_unlock(&syme->src->lock); |
923c42c1 MG |
397 | if (more) |
398 | printf("%d lines not displayed, maybe increase display entries [e]\n", more); | |
399 | } | |
07800601 | 400 | |
de04687f | 401 | /* |
8115d60c | 402 | * Symbols will be added here in perf_event__process_sample and will get out |
de04687f ACM |
403 | * after decayed. |
404 | */ | |
405 | static LIST_HEAD(active_symbols); | |
c44613a4 | 406 | static pthread_mutex_t active_symbols_lock = PTHREAD_MUTEX_INITIALIZER; |
07800601 | 407 | |
07800601 IM |
408 | /* |
409 | * Ordering weight: count-1 * count-2 * ... / count-n | |
410 | */ | |
411 | static double sym_weight(const struct sym_entry *sym) | |
412 | { | |
c44613a4 | 413 | double weight = sym->snap_count; |
07800601 IM |
414 | int counter; |
415 | ||
46ab9764 MG |
416 | if (!display_weighted) |
417 | return weight; | |
418 | ||
361c99a6 | 419 | for (counter = 1; counter < evsel_list->nr_entries - 1; counter++) |
07800601 IM |
420 | weight *= sym->count[counter]; |
421 | ||
422 | weight /= (sym->count[counter] + 1); | |
423 | ||
424 | return weight; | |
425 | } | |
426 | ||
2debbc83 | 427 | static long samples; |
a1645ce1 | 428 | static long kernel_samples, us_samples; |
1676b8a0 | 429 | static long exact_samples; |
a1645ce1 | 430 | static long guest_us_samples, guest_kernel_samples; |
07800601 IM |
431 | static const char CONSOLE_CLEAR[] = "\e[H\e[2J"; |
432 | ||
c44613a4 | 433 | static void __list_insert_active_sym(struct sym_entry *syme) |
de04687f ACM |
434 | { |
435 | list_add(&syme->node, &active_symbols); | |
436 | } | |
437 | ||
c44613a4 ACM |
438 | static void list_remove_active_sym(struct sym_entry *syme) |
439 | { | |
440 | pthread_mutex_lock(&active_symbols_lock); | |
441 | list_del_init(&syme->node); | |
442 | pthread_mutex_unlock(&active_symbols_lock); | |
443 | } | |
444 | ||
de04687f ACM |
445 | static void rb_insert_active_sym(struct rb_root *tree, struct sym_entry *se) |
446 | { | |
447 | struct rb_node **p = &tree->rb_node; | |
448 | struct rb_node *parent = NULL; | |
449 | struct sym_entry *iter; | |
450 | ||
451 | while (*p != NULL) { | |
452 | parent = *p; | |
453 | iter = rb_entry(parent, struct sym_entry, rb_node); | |
454 | ||
c44613a4 | 455 | if (se->weight > iter->weight) |
de04687f ACM |
456 | p = &(*p)->rb_left; |
457 | else | |
458 | p = &(*p)->rb_right; | |
459 | } | |
460 | ||
461 | rb_link_node(&se->rb_node, parent, p); | |
462 | rb_insert_color(&se->rb_node, tree); | |
463 | } | |
07800601 | 464 | |
93fc64f1 | 465 | static void print_sym_table(struct perf_session *session) |
07800601 | 466 | { |
233f0b95 | 467 | int printed = 0, j; |
69aad6f1 ACM |
468 | struct perf_evsel *counter; |
469 | int snap = !display_weighted ? sym_counter : 0; | |
2debbc83 | 470 | float samples_per_sec = samples/delay_secs; |
a1645ce1 ZY |
471 | float ksamples_per_sec = kernel_samples/delay_secs; |
472 | float us_samples_per_sec = (us_samples)/delay_secs; | |
473 | float guest_kernel_samples_per_sec = (guest_kernel_samples)/delay_secs; | |
474 | float guest_us_samples_per_sec = (guest_us_samples)/delay_secs; | |
1676b8a0 | 475 | float esamples_percent = (100.0*exact_samples)/samples; |
2debbc83 | 476 | float sum_ksamples = 0.0; |
de04687f ACM |
477 | struct sym_entry *syme, *n; |
478 | struct rb_root tmp = RB_ROOT; | |
479 | struct rb_node *nd; | |
00909e95 | 480 | int sym_width = 0, dso_width = 0, dso_short_width = 0; |
13cc5079 | 481 | const int win_width = winsize.ws_col - 1; |
07800601 | 482 | |
a1645ce1 ZY |
483 | samples = us_samples = kernel_samples = exact_samples = 0; |
484 | guest_kernel_samples = guest_us_samples = 0; | |
07800601 | 485 | |
de04687f | 486 | /* Sort the active symbols */ |
c44613a4 ACM |
487 | pthread_mutex_lock(&active_symbols_lock); |
488 | syme = list_entry(active_symbols.next, struct sym_entry, node); | |
489 | pthread_mutex_unlock(&active_symbols_lock); | |
490 | ||
491 | list_for_each_entry_safe_from(syme, n, &active_symbols, node) { | |
46ab9764 | 492 | syme->snap_count = syme->count[snap]; |
c44613a4 | 493 | if (syme->snap_count != 0) { |
13cc5079 | 494 | |
8ffcda17 ACM |
495 | if ((hide_user_symbols && |
496 | syme->origin == PERF_RECORD_MISC_USER) || | |
497 | (hide_kernel_symbols && | |
498 | syme->origin == PERF_RECORD_MISC_KERNEL)) { | |
499 | list_remove_active_sym(syme); | |
500 | continue; | |
501 | } | |
c44613a4 | 502 | syme->weight = sym_weight(syme); |
de04687f | 503 | rb_insert_active_sym(&tmp, syme); |
2debbc83 | 504 | sum_ksamples += syme->snap_count; |
d94b9430 | 505 | |
361c99a6 | 506 | for (j = 0; j < evsel_list->nr_entries; j++) |
de04687f ACM |
507 | syme->count[j] = zero ? 0 : syme->count[j] * 7 / 8; |
508 | } else | |
c44613a4 | 509 | list_remove_active_sym(syme); |
d94b9430 MG |
510 | } |
511 | ||
0f5486b5 | 512 | puts(CONSOLE_CLEAR); |
07800601 | 513 | |
a1645ce1 ZY |
514 | if (!perf_guest) { |
515 | printf(" PerfTop:%8.0f irqs/sec kernel:%4.1f%%" | |
516 | " exact: %4.1f%% [", | |
517 | samples_per_sec, | |
518 | 100.0 - (100.0 * ((samples_per_sec - ksamples_per_sec) / | |
519 | samples_per_sec)), | |
520 | esamples_percent); | |
521 | } else { | |
522 | printf(" PerfTop:%8.0f irqs/sec kernel:%4.1f%% us:%4.1f%%" | |
523 | " guest kernel:%4.1f%% guest us:%4.1f%%" | |
524 | " exact: %4.1f%% [", | |
525 | samples_per_sec, | |
526 | 100.0 - (100.0 * ((samples_per_sec-ksamples_per_sec) / | |
527 | samples_per_sec)), | |
528 | 100.0 - (100.0 * ((samples_per_sec-us_samples_per_sec) / | |
529 | samples_per_sec)), | |
530 | 100.0 - (100.0 * ((samples_per_sec - | |
531 | guest_kernel_samples_per_sec) / | |
532 | samples_per_sec)), | |
533 | 100.0 - (100.0 * ((samples_per_sec - | |
534 | guest_us_samples_per_sec) / | |
535 | samples_per_sec)), | |
536 | esamples_percent); | |
537 | } | |
07800601 | 538 | |
361c99a6 | 539 | if (evsel_list->nr_entries == 1 || !display_weighted) { |
69aad6f1 | 540 | struct perf_evsel *first; |
361c99a6 | 541 | first = list_entry(evsel_list->entries.next, struct perf_evsel, node); |
9486aa38 | 542 | printf("%" PRIu64, (uint64_t)first->attr.sample_period); |
cf1f4574 IM |
543 | if (freq) |
544 | printf("Hz "); | |
545 | else | |
546 | printf(" "); | |
547 | } | |
07800601 | 548 | |
46ab9764 | 549 | if (!display_weighted) |
69aad6f1 | 550 | printf("%s", event_name(sym_evsel)); |
361c99a6 | 551 | else list_for_each_entry(counter, &evsel_list->entries, node) { |
69aad6f1 | 552 | if (counter->idx) |
07800601 IM |
553 | printf("/"); |
554 | ||
555 | printf("%s", event_name(counter)); | |
556 | } | |
557 | ||
558 | printf( "], "); | |
559 | ||
b456bae0 IM |
560 | if (target_pid != -1) |
561 | printf(" (target_pid: %d", target_pid); | |
d6d901c2 ZY |
562 | else if (target_tid != -1) |
563 | printf(" (target_tid: %d", target_tid); | |
07800601 IM |
564 | else |
565 | printf(" (all"); | |
566 | ||
01797c59 | 567 | if (cpu_list) |
7e2ed097 | 568 | printf(", CPU%s: %s)\n", evsel_list->cpus->nr > 1 ? "s" : "", cpu_list); |
07800601 | 569 | else { |
d6d901c2 | 570 | if (target_tid != -1) |
07800601 IM |
571 | printf(")\n"); |
572 | else | |
7e2ed097 ACM |
573 | printf(", %d CPU%s)\n", evsel_list->cpus->nr, |
574 | evsel_list->cpus->nr > 1 ? "s" : ""); | |
07800601 IM |
575 | } |
576 | ||
1a105f74 | 577 | printf("%-*.*s\n", win_width, win_width, graph_dotted_line); |
07800601 | 578 | |
93fc64f1 ACM |
579 | if (session->hists.stats.total_lost != 0) { |
580 | color_fprintf(stdout, PERF_COLOR_RED, "WARNING:"); | |
581 | printf(" LOST %" PRIu64 " events, Check IO/CPU overload\n", | |
582 | session->hists.stats.total_lost); | |
583 | } | |
584 | ||
923c42c1 MG |
585 | if (sym_filter_entry) { |
586 | show_details(sym_filter_entry); | |
587 | return; | |
588 | } | |
589 | ||
13cc5079 ACM |
590 | /* |
591 | * Find the longest symbol name that will be displayed | |
592 | */ | |
593 | for (nd = rb_first(&tmp); nd; nd = rb_next(nd)) { | |
594 | syme = rb_entry(nd, struct sym_entry, rb_node); | |
595 | if (++printed > print_entries || | |
596 | (int)syme->snap_count < count_filter) | |
597 | continue; | |
598 | ||
1a105f74 ACM |
599 | if (syme->map->dso->long_name_len > dso_width) |
600 | dso_width = syme->map->dso->long_name_len; | |
601 | ||
b63be8d7 ACM |
602 | if (syme->map->dso->short_name_len > dso_short_width) |
603 | dso_short_width = syme->map->dso->short_name_len; | |
604 | ||
13cc5079 ACM |
605 | if (syme->name_len > sym_width) |
606 | sym_width = syme->name_len; | |
607 | } | |
608 | ||
609 | printed = 0; | |
610 | ||
b63be8d7 ACM |
611 | if (sym_width + dso_width > winsize.ws_col - 29) { |
612 | dso_width = dso_short_width; | |
613 | if (sym_width + dso_width > winsize.ws_col - 29) | |
614 | sym_width = winsize.ws_col - dso_width - 29; | |
615 | } | |
7cc017ed | 616 | putchar('\n'); |
361c99a6 | 617 | if (evsel_list->nr_entries == 1) |
5b2bb75a | 618 | printf(" samples pcnt"); |
07800601 | 619 | else |
5b2bb75a | 620 | printf(" weight samples pcnt"); |
07800601 | 621 | |
7ced156b ACM |
622 | if (verbose) |
623 | printf(" RIP "); | |
7cc017ed | 624 | printf(" %-*.*s DSO\n", sym_width, sym_width, "function"); |
5b2bb75a | 625 | printf(" %s _______ _____", |
361c99a6 | 626 | evsel_list->nr_entries == 1 ? " " : "______"); |
7ced156b | 627 | if (verbose) |
5b2bb75a | 628 | printf(" ________________"); |
1a105f74 | 629 | printf(" %-*.*s", sym_width, sym_width, graph_line); |
7cc017ed | 630 | printf(" %-*.*s", dso_width, dso_width, graph_line); |
1a105f74 | 631 | puts("\n"); |
07800601 | 632 | |
de04687f | 633 | for (nd = rb_first(&tmp); nd; nd = rb_next(nd)) { |
83a0944f | 634 | struct symbol *sym; |
8fc0321f | 635 | double pcnt; |
d94b9430 | 636 | |
83a0944f | 637 | syme = rb_entry(nd, struct sym_entry, rb_node); |
51a472de | 638 | sym = sym_entry__symbol(syme); |
923c42c1 | 639 | if (++printed > print_entries || (int)syme->snap_count < count_filter) |
c44613a4 | 640 | continue; |
d94b9430 | 641 | |
2debbc83 IM |
642 | pcnt = 100.0 - (100.0 * ((sum_ksamples - syme->snap_count) / |
643 | sum_ksamples)); | |
d94b9430 | 644 | |
361c99a6 | 645 | if (evsel_list->nr_entries == 1 || !display_weighted) |
5b2bb75a | 646 | printf("%20.2f ", syme->weight); |
d94b9430 | 647 | else |
5b2bb75a | 648 | printf("%9.1f %10ld ", syme->weight, syme->snap_count); |
8fc0321f | 649 | |
1e11fd82 | 650 | percent_color_fprintf(stdout, "%4.1f%%", pcnt); |
7ced156b | 651 | if (verbose) |
9486aa38 | 652 | printf(" %016" PRIx64, sym->start); |
13cc5079 | 653 | printf(" %-*.*s", sym_width, sym_width, sym->name); |
7cc017ed ACM |
654 | printf(" %-*.*s\n", dso_width, dso_width, |
655 | dso_width >= syme->map->dso->long_name_len ? | |
656 | syme->map->dso->long_name : | |
657 | syme->map->dso->short_name); | |
07800601 | 658 | } |
07800601 IM |
659 | } |
660 | ||
923c42c1 MG |
661 | static void prompt_integer(int *target, const char *msg) |
662 | { | |
663 | char *buf = malloc(0), *p; | |
664 | size_t dummy = 0; | |
665 | int tmp; | |
666 | ||
667 | fprintf(stdout, "\n%s: ", msg); | |
668 | if (getline(&buf, &dummy, stdin) < 0) | |
669 | return; | |
670 | ||
671 | p = strchr(buf, '\n'); | |
672 | if (p) | |
673 | *p = 0; | |
674 | ||
675 | p = buf; | |
676 | while(*p) { | |
677 | if (!isdigit(*p)) | |
678 | goto out_free; | |
679 | p++; | |
680 | } | |
681 | tmp = strtoul(buf, NULL, 10); | |
682 | *target = tmp; | |
683 | out_free: | |
684 | free(buf); | |
685 | } | |
686 | ||
687 | static void prompt_percent(int *target, const char *msg) | |
688 | { | |
689 | int tmp = 0; | |
690 | ||
691 | prompt_integer(&tmp, msg); | |
692 | if (tmp >= 0 && tmp <= 100) | |
693 | *target = tmp; | |
694 | } | |
695 | ||
696 | static void prompt_symbol(struct sym_entry **target, const char *msg) | |
697 | { | |
698 | char *buf = malloc(0), *p; | |
699 | struct sym_entry *syme = *target, *n, *found = NULL; | |
700 | size_t dummy = 0; | |
701 | ||
702 | /* zero counters of active symbol */ | |
703 | if (syme) { | |
b269876c | 704 | pthread_mutex_lock(&syme->src->lock); |
923c42c1 MG |
705 | __zero_source_counters(syme); |
706 | *target = NULL; | |
b269876c | 707 | pthread_mutex_unlock(&syme->src->lock); |
923c42c1 MG |
708 | } |
709 | ||
710 | fprintf(stdout, "\n%s: ", msg); | |
711 | if (getline(&buf, &dummy, stdin) < 0) | |
712 | goto out_free; | |
713 | ||
714 | p = strchr(buf, '\n'); | |
715 | if (p) | |
716 | *p = 0; | |
717 | ||
718 | pthread_mutex_lock(&active_symbols_lock); | |
719 | syme = list_entry(active_symbols.next, struct sym_entry, node); | |
720 | pthread_mutex_unlock(&active_symbols_lock); | |
721 | ||
722 | list_for_each_entry_safe_from(syme, n, &active_symbols, node) { | |
51a472de | 723 | struct symbol *sym = sym_entry__symbol(syme); |
923c42c1 MG |
724 | |
725 | if (!strcmp(buf, sym->name)) { | |
726 | found = syme; | |
727 | break; | |
728 | } | |
729 | } | |
730 | ||
731 | if (!found) { | |
66aeb6d5 | 732 | fprintf(stderr, "Sorry, %s is not active.\n", buf); |
923c42c1 MG |
733 | sleep(1); |
734 | return; | |
735 | } else | |
736 | parse_source(found); | |
737 | ||
738 | out_free: | |
739 | free(buf); | |
740 | } | |
741 | ||
091bd2e9 | 742 | static void print_mapped_keys(void) |
923c42c1 | 743 | { |
091bd2e9 MG |
744 | char *name = NULL; |
745 | ||
746 | if (sym_filter_entry) { | |
51a472de | 747 | struct symbol *sym = sym_entry__symbol(sym_filter_entry); |
091bd2e9 MG |
748 | name = sym->name; |
749 | } | |
750 | ||
751 | fprintf(stdout, "\nMapped keys:\n"); | |
752 | fprintf(stdout, "\t[d] display refresh delay. \t(%d)\n", delay_secs); | |
753 | fprintf(stdout, "\t[e] display entries (lines). \t(%d)\n", print_entries); | |
754 | ||
361c99a6 | 755 | if (evsel_list->nr_entries > 1) |
69aad6f1 | 756 | fprintf(stdout, "\t[E] active event counter. \t(%s)\n", event_name(sym_evsel)); |
091bd2e9 MG |
757 | |
758 | fprintf(stdout, "\t[f] profile display filter (count). \t(%d)\n", count_filter); | |
759 | ||
6cff0e8d KS |
760 | fprintf(stdout, "\t[F] annotate display filter (percent). \t(%d%%)\n", sym_pcnt_filter); |
761 | fprintf(stdout, "\t[s] annotate symbol. \t(%s)\n", name?: "NULL"); | |
762 | fprintf(stdout, "\t[S] stop annotation.\n"); | |
091bd2e9 | 763 | |
361c99a6 | 764 | if (evsel_list->nr_entries > 1) |
091bd2e9 MG |
765 | fprintf(stdout, "\t[w] toggle display weighted/count[E]r. \t(%d)\n", display_weighted ? 1 : 0); |
766 | ||
8ffcda17 | 767 | fprintf(stdout, |
1a72cfa6 | 768 | "\t[K] hide kernel_symbols symbols. \t(%s)\n", |
8ffcda17 ACM |
769 | hide_kernel_symbols ? "yes" : "no"); |
770 | fprintf(stdout, | |
771 | "\t[U] hide user symbols. \t(%s)\n", | |
772 | hide_user_symbols ? "yes" : "no"); | |
46ab9764 | 773 | fprintf(stdout, "\t[z] toggle sample zeroing. \t(%d)\n", zero ? 1 : 0); |
091bd2e9 MG |
774 | fprintf(stdout, "\t[qQ] quit.\n"); |
775 | } | |
776 | ||
777 | static int key_mapped(int c) | |
778 | { | |
779 | switch (c) { | |
780 | case 'd': | |
781 | case 'e': | |
782 | case 'f': | |
783 | case 'z': | |
784 | case 'q': | |
785 | case 'Q': | |
8ffcda17 ACM |
786 | case 'K': |
787 | case 'U': | |
6cff0e8d KS |
788 | case 'F': |
789 | case 's': | |
790 | case 'S': | |
091bd2e9 MG |
791 | return 1; |
792 | case 'E': | |
793 | case 'w': | |
361c99a6 | 794 | return evsel_list->nr_entries > 1 ? 1 : 0; |
83a0944f IM |
795 | default: |
796 | break; | |
091bd2e9 MG |
797 | } |
798 | ||
799 | return 0; | |
923c42c1 MG |
800 | } |
801 | ||
a1645ce1 | 802 | static void handle_keypress(struct perf_session *session, int c) |
923c42c1 | 803 | { |
091bd2e9 MG |
804 | if (!key_mapped(c)) { |
805 | struct pollfd stdin_poll = { .fd = 0, .events = POLLIN }; | |
806 | struct termios tc, save; | |
807 | ||
808 | print_mapped_keys(); | |
809 | fprintf(stdout, "\nEnter selection, or unmapped key to continue: "); | |
810 | fflush(stdout); | |
811 | ||
812 | tcgetattr(0, &save); | |
813 | tc = save; | |
814 | tc.c_lflag &= ~(ICANON | ECHO); | |
815 | tc.c_cc[VMIN] = 0; | |
816 | tc.c_cc[VTIME] = 0; | |
817 | tcsetattr(0, TCSANOW, &tc); | |
818 | ||
819 | poll(&stdin_poll, 1, -1); | |
820 | c = getc(stdin); | |
821 | ||
822 | tcsetattr(0, TCSAFLUSH, &save); | |
823 | if (!key_mapped(c)) | |
824 | return; | |
825 | } | |
826 | ||
923c42c1 MG |
827 | switch (c) { |
828 | case 'd': | |
829 | prompt_integer(&delay_secs, "Enter display delay"); | |
dc79959a TB |
830 | if (delay_secs < 1) |
831 | delay_secs = 1; | |
923c42c1 MG |
832 | break; |
833 | case 'e': | |
834 | prompt_integer(&print_entries, "Enter display entries (lines)"); | |
3b6ed988 | 835 | if (print_entries == 0) { |
13cc5079 | 836 | sig_winch_handler(SIGWINCH); |
3b6ed988 ACM |
837 | signal(SIGWINCH, sig_winch_handler); |
838 | } else | |
839 | signal(SIGWINCH, SIG_DFL); | |
923c42c1 MG |
840 | break; |
841 | case 'E': | |
361c99a6 | 842 | if (evsel_list->nr_entries > 1) { |
923c42c1 | 843 | fprintf(stderr, "\nAvailable events:"); |
69aad6f1 | 844 | |
361c99a6 | 845 | list_for_each_entry(sym_evsel, &evsel_list->entries, node) |
69aad6f1 | 846 | fprintf(stderr, "\n\t%d %s", sym_evsel->idx, event_name(sym_evsel)); |
923c42c1 MG |
847 | |
848 | prompt_integer(&sym_counter, "Enter details event counter"); | |
849 | ||
361c99a6 ACM |
850 | if (sym_counter >= evsel_list->nr_entries) { |
851 | sym_evsel = list_entry(evsel_list->entries.next, struct perf_evsel, node); | |
923c42c1 | 852 | sym_counter = 0; |
69aad6f1 | 853 | fprintf(stderr, "Sorry, no such event, using %s.\n", event_name(sym_evsel)); |
923c42c1 | 854 | sleep(1); |
69aad6f1 | 855 | break; |
923c42c1 | 856 | } |
361c99a6 | 857 | list_for_each_entry(sym_evsel, &evsel_list->entries, node) |
69aad6f1 ACM |
858 | if (sym_evsel->idx == sym_counter) |
859 | break; | |
923c42c1 MG |
860 | } else sym_counter = 0; |
861 | break; | |
862 | case 'f': | |
863 | prompt_integer(&count_filter, "Enter display event count filter"); | |
864 | break; | |
865 | case 'F': | |
866 | prompt_percent(&sym_pcnt_filter, "Enter details display event filter (percent)"); | |
867 | break; | |
8ffcda17 ACM |
868 | case 'K': |
869 | hide_kernel_symbols = !hide_kernel_symbols; | |
870 | break; | |
923c42c1 MG |
871 | case 'q': |
872 | case 'Q': | |
873 | printf("exiting.\n"); | |
c338aee8 | 874 | if (dump_symtab) |
cbf69680 | 875 | perf_session__fprintf_dsos(session, stderr); |
923c42c1 MG |
876 | exit(0); |
877 | case 's': | |
878 | prompt_symbol(&sym_filter_entry, "Enter details symbol"); | |
879 | break; | |
880 | case 'S': | |
881 | if (!sym_filter_entry) | |
882 | break; | |
883 | else { | |
884 | struct sym_entry *syme = sym_filter_entry; | |
885 | ||
b269876c | 886 | pthread_mutex_lock(&syme->src->lock); |
923c42c1 MG |
887 | sym_filter_entry = NULL; |
888 | __zero_source_counters(syme); | |
b269876c | 889 | pthread_mutex_unlock(&syme->src->lock); |
923c42c1 MG |
890 | } |
891 | break; | |
8ffcda17 ACM |
892 | case 'U': |
893 | hide_user_symbols = !hide_user_symbols; | |
894 | break; | |
46ab9764 MG |
895 | case 'w': |
896 | display_weighted = ~display_weighted; | |
897 | break; | |
923c42c1 | 898 | case 'z': |
c0555642 | 899 | zero = !zero; |
923c42c1 | 900 | break; |
83a0944f IM |
901 | default: |
902 | break; | |
923c42c1 MG |
903 | } |
904 | } | |
905 | ||
f37a291c | 906 | static void *display_thread(void *arg __used) |
07800601 | 907 | { |
0f5486b5 | 908 | struct pollfd stdin_poll = { .fd = 0, .events = POLLIN }; |
923c42c1 MG |
909 | struct termios tc, save; |
910 | int delay_msecs, c; | |
a1645ce1 | 911 | struct perf_session *session = (struct perf_session *) arg; |
923c42c1 MG |
912 | |
913 | tcgetattr(0, &save); | |
914 | tc = save; | |
915 | tc.c_lflag &= ~(ICANON | ECHO); | |
916 | tc.c_cc[VMIN] = 0; | |
917 | tc.c_cc[VTIME] = 0; | |
091bd2e9 | 918 | |
923c42c1 MG |
919 | repeat: |
920 | delay_msecs = delay_secs * 1000; | |
921 | tcsetattr(0, TCSANOW, &tc); | |
922 | /* trash return*/ | |
923 | getc(stdin); | |
07800601 | 924 | |
0f5486b5 | 925 | do { |
93fc64f1 | 926 | print_sym_table(session); |
0f5486b5 FW |
927 | } while (!poll(&stdin_poll, 1, delay_msecs) == 1); |
928 | ||
923c42c1 MG |
929 | c = getc(stdin); |
930 | tcsetattr(0, TCSAFLUSH, &save); | |
931 | ||
a1645ce1 | 932 | handle_keypress(session, c); |
923c42c1 | 933 | goto repeat; |
07800601 IM |
934 | |
935 | return NULL; | |
936 | } | |
937 | ||
2ab52083 | 938 | /* Tag samples to be skipped. */ |
f37a291c | 939 | static const char *skip_symbols[] = { |
2ab52083 | 940 | "default_idle", |
b0e8572f | 941 | "native_safe_halt", |
2ab52083 AB |
942 | "cpu_idle", |
943 | "enter_idle", | |
944 | "exit_idle", | |
945 | "mwait_idle", | |
59b90056 | 946 | "mwait_idle_with_hints", |
8357275b | 947 | "poll_idle", |
3a3393ef AB |
948 | "ppc64_runlatch_off", |
949 | "pseries_dedicated_idle_sleep", | |
2ab52083 AB |
950 | NULL |
951 | }; | |
952 | ||
439d473b | 953 | static int symbol_filter(struct map *map, struct symbol *sym) |
07800601 | 954 | { |
de04687f ACM |
955 | struct sym_entry *syme; |
956 | const char *name = sym->name; | |
2ab52083 | 957 | int i; |
de04687f | 958 | |
3a3393ef AB |
959 | /* |
960 | * ppc64 uses function descriptors and appends a '.' to the | |
961 | * start of every instruction address. Remove it. | |
962 | */ | |
963 | if (name[0] == '.') | |
964 | name++; | |
965 | ||
de04687f ACM |
966 | if (!strcmp(name, "_text") || |
967 | !strcmp(name, "_etext") || | |
968 | !strcmp(name, "_sinittext") || | |
969 | !strncmp("init_module", name, 11) || | |
970 | !strncmp("cleanup_module", name, 14) || | |
971 | strstr(name, "_text_start") || | |
972 | strstr(name, "_text_end")) | |
07800601 | 973 | return 1; |
07800601 | 974 | |
00a192b3 | 975 | syme = symbol__priv(sym); |
439d473b | 976 | syme->map = map; |
b269876c | 977 | syme->src = NULL; |
6cff0e8d KS |
978 | |
979 | if (!sym_filter_entry && sym_filter && !strcmp(name, sym_filter)) { | |
980 | /* schedule initial sym_filter_entry setup */ | |
981 | sym_filter_entry_sched = syme; | |
982 | sym_filter = NULL; | |
983 | } | |
923c42c1 | 984 | |
2ab52083 AB |
985 | for (i = 0; skip_symbols[i]; i++) { |
986 | if (!strcmp(skip_symbols[i], name)) { | |
987 | syme->skip = 1; | |
988 | break; | |
989 | } | |
990 | } | |
07800601 | 991 | |
13cc5079 ACM |
992 | if (!syme->skip) |
993 | syme->name_len = strlen(sym->name); | |
994 | ||
07800601 IM |
995 | return 0; |
996 | } | |
997 | ||
8115d60c ACM |
998 | static void perf_event__process_sample(const union perf_event *event, |
999 | struct perf_sample *sample, | |
1000 | struct perf_session *session) | |
07800601 | 1001 | { |
8115d60c | 1002 | u64 ip = event->ip.ip; |
5b2bb75a | 1003 | struct sym_entry *syme; |
1ed091c4 | 1004 | struct addr_location al; |
23346f21 | 1005 | struct machine *machine; |
8115d60c | 1006 | u8 origin = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; |
5b2bb75a | 1007 | |
24bfef0f ACM |
1008 | ++samples; |
1009 | ||
8ffcda17 | 1010 | switch (origin) { |
1ed091c4 | 1011 | case PERF_RECORD_MISC_USER: |
a1645ce1 | 1012 | ++us_samples; |
8ffcda17 ACM |
1013 | if (hide_user_symbols) |
1014 | return; | |
23346f21 | 1015 | machine = perf_session__find_host_machine(session); |
1ed091c4 | 1016 | break; |
5b2bb75a | 1017 | case PERF_RECORD_MISC_KERNEL: |
a1645ce1 | 1018 | ++kernel_samples; |
8ffcda17 ACM |
1019 | if (hide_kernel_symbols) |
1020 | return; | |
23346f21 | 1021 | machine = perf_session__find_host_machine(session); |
a1645ce1 ZY |
1022 | break; |
1023 | case PERF_RECORD_MISC_GUEST_KERNEL: | |
1024 | ++guest_kernel_samples; | |
8115d60c | 1025 | machine = perf_session__find_machine(session, event->ip.pid); |
5b2bb75a | 1026 | break; |
a1645ce1 ZY |
1027 | case PERF_RECORD_MISC_GUEST_USER: |
1028 | ++guest_us_samples; | |
1029 | /* | |
1030 | * TODO: we don't process guest user from host side | |
1031 | * except simple counting. | |
1032 | */ | |
1033 | return; | |
5b2bb75a ACM |
1034 | default: |
1035 | return; | |
1036 | } | |
1037 | ||
23346f21 | 1038 | if (!machine && perf_guest) { |
a1645ce1 | 1039 | pr_err("Can't find guest [%d]'s kernel information\n", |
8115d60c | 1040 | event->ip.pid); |
a1645ce1 ZY |
1041 | return; |
1042 | } | |
1043 | ||
8115d60c | 1044 | if (event->header.misc & PERF_RECORD_MISC_EXACT_IP) |
1676b8a0 PZ |
1045 | exact_samples++; |
1046 | ||
8115d60c ACM |
1047 | if (perf_event__preprocess_sample(event, session, &al, sample, |
1048 | symbol_filter) < 0 || | |
72b8fa17 | 1049 | al.filtered) |
1ed091c4 | 1050 | return; |
07800601 | 1051 | |
72b8fa17 ACM |
1052 | if (al.sym == NULL) { |
1053 | /* | |
1054 | * As we do lazy loading of symtabs we only will know if the | |
1055 | * specified vmlinux file is invalid when we actually have a | |
1056 | * hit in kernel space and then try to load it. So if we get | |
1057 | * here and there are _no_ symbols in the DSO backing the | |
1058 | * kernel map, bail out. | |
1059 | * | |
1060 | * We may never get here, for instance, if we use -K/ | |
1061 | * --hide-kernel-symbols, even if the user specifies an | |
1062 | * invalid --vmlinux ;-) | |
1063 | */ | |
23346f21 | 1064 | if (al.map == machine->vmlinux_maps[MAP__FUNCTION] && |
72b8fa17 ACM |
1065 | RB_EMPTY_ROOT(&al.map->dso->symbols[MAP__FUNCTION])) { |
1066 | pr_err("The %s file can't be used\n", | |
1067 | symbol_conf.vmlinux_name); | |
1068 | exit(1); | |
1069 | } | |
1070 | ||
1071 | return; | |
1072 | } | |
1073 | ||
6cff0e8d KS |
1074 | /* let's see, whether we need to install initial sym_filter_entry */ |
1075 | if (sym_filter_entry_sched) { | |
1076 | sym_filter_entry = sym_filter_entry_sched; | |
1077 | sym_filter_entry_sched = NULL; | |
b0a9ab62 ACM |
1078 | if (parse_source(sym_filter_entry) < 0) { |
1079 | struct symbol *sym = sym_entry__symbol(sym_filter_entry); | |
1080 | ||
1081 | pr_err("Can't annotate %s", sym->name); | |
1082 | if (sym_filter_entry->map->dso->origin == DSO__ORIG_KERNEL) { | |
1083 | pr_err(": No vmlinux file was found in the path:\n"); | |
5ad90e4e | 1084 | machine__fprintf_vmlinux_path(machine, stderr); |
b0a9ab62 ACM |
1085 | } else |
1086 | pr_err(".\n"); | |
1087 | exit(1); | |
1088 | } | |
6cff0e8d KS |
1089 | } |
1090 | ||
1ed091c4 | 1091 | syme = symbol__priv(al.sym); |
5b2bb75a | 1092 | if (!syme->skip) { |
70db7533 ACM |
1093 | struct perf_evsel *evsel; |
1094 | ||
8ffcda17 | 1095 | syme->origin = origin; |
70db7533 ACM |
1096 | evsel = perf_evlist__id2evsel(evsel_list, sample->id); |
1097 | assert(evsel != NULL); | |
1098 | syme->count[evsel->idx]++; | |
69aad6f1 | 1099 | record_precise_ip(syme, evsel->idx, ip); |
5b2bb75a ACM |
1100 | pthread_mutex_lock(&active_symbols_lock); |
1101 | if (list_empty(&syme->node) || !syme->node.next) | |
1102 | __list_insert_active_sym(syme); | |
1103 | pthread_mutex_unlock(&active_symbols_lock); | |
5b2bb75a | 1104 | } |
07800601 IM |
1105 | } |
1106 | ||
70db7533 | 1107 | static void perf_session__mmap_read_cpu(struct perf_session *self, int cpu) |
07800601 | 1108 | { |
8d50e5b4 | 1109 | struct perf_sample sample; |
8115d60c | 1110 | union perf_event *event; |
07800601 | 1111 | |
04391deb | 1112 | while ((event = perf_evlist__read_on_cpu(evsel_list, cpu)) != NULL) { |
d0dd74e8 | 1113 | perf_session__parse_sample(self, event, &sample); |
04391deb | 1114 | |
5b2bb75a | 1115 | if (event->header.type == PERF_RECORD_SAMPLE) |
8115d60c | 1116 | perf_event__process_sample(event, &sample, self); |
5b2bb75a | 1117 | else |
8115d60c | 1118 | perf_event__process(event, &sample, self); |
07800601 | 1119 | } |
07800601 IM |
1120 | } |
1121 | ||
d8f66248 | 1122 | static void perf_session__mmap_read(struct perf_session *self) |
2f01190a | 1123 | { |
70db7533 ACM |
1124 | int i; |
1125 | ||
7e2ed097 | 1126 | for (i = 0; i < evsel_list->cpus->nr; i++) |
70db7533 | 1127 | perf_session__mmap_read_cpu(self, i); |
2f01190a FW |
1128 | } |
1129 | ||
72cb7013 ACM |
1130 | static void start_counters(struct perf_evlist *evlist) |
1131 | { | |
1132 | struct perf_evsel *counter; | |
7e4ff9e3 | 1133 | |
72cb7013 ACM |
1134 | list_for_each_entry(counter, &evlist->entries, node) { |
1135 | struct perf_event_attr *attr = &counter->attr; | |
716c69fe | 1136 | |
72cb7013 ACM |
1137 | attr->sample_type = PERF_SAMPLE_IP | PERF_SAMPLE_TID; |
1138 | ||
1139 | if (freq) { | |
1140 | attr->sample_type |= PERF_SAMPLE_PERIOD; | |
1141 | attr->freq = 1; | |
1142 | attr->sample_freq = freq; | |
1143 | } | |
d6d901c2 | 1144 | |
70db7533 ACM |
1145 | if (evlist->nr_entries > 1) { |
1146 | attr->sample_type |= PERF_SAMPLE_ID; | |
1147 | attr->read_format |= PERF_FORMAT_ID; | |
1148 | } | |
1149 | ||
72cb7013 ACM |
1150 | attr->mmap = 1; |
1151 | try_again: | |
7e2ed097 ACM |
1152 | if (perf_evsel__open(counter, evsel_list->cpus, |
1153 | evsel_list->threads, group, inherit) < 0) { | |
d6d901c2 ZY |
1154 | int err = errno; |
1155 | ||
1156 | if (err == EPERM || err == EACCES) | |
d9cf837e CA |
1157 | die("Permission error - are you root?\n" |
1158 | "\t Consider tweaking" | |
1159 | " /proc/sys/kernel/perf_event_paranoid.\n"); | |
d6d901c2 ZY |
1160 | /* |
1161 | * If it's cycles then fall back to hrtimer | |
1162 | * based cpu-clock-tick sw counter, which | |
1163 | * is always available even if no PMU support: | |
1164 | */ | |
72cb7013 ACM |
1165 | if (attr->type == PERF_TYPE_HARDWARE && |
1166 | attr->config == PERF_COUNT_HW_CPU_CYCLES) { | |
d6d901c2 ZY |
1167 | |
1168 | if (verbose) | |
1169 | warning(" ... trying to fall back to cpu-clock-ticks\n"); | |
1170 | ||
1171 | attr->type = PERF_TYPE_SOFTWARE; | |
1172 | attr->config = PERF_COUNT_SW_CPU_CLOCK; | |
1173 | goto try_again; | |
1174 | } | |
1175 | printf("\n"); | |
72cb7013 ACM |
1176 | error("sys_perf_event_open() syscall returned with %d " |
1177 | "(%s). /bin/dmesg may provide additional information.\n", | |
1178 | err, strerror(err)); | |
d6d901c2 ZY |
1179 | die("No CONFIG_PERF_EVENTS=y kernel support configured?\n"); |
1180 | exit(-1); | |
1181 | } | |
716c69fe | 1182 | } |
70db7533 | 1183 | |
7e2ed097 | 1184 | if (perf_evlist__mmap(evlist, mmap_pages, false) < 0) |
70db7533 | 1185 | die("failed to mmap with %d (%s)\n", errno, strerror(errno)); |
716c69fe IM |
1186 | } |
1187 | ||
1188 | static int __cmd_top(void) | |
1189 | { | |
1190 | pthread_t thread; | |
70db7533 | 1191 | struct perf_evsel *first; |
72cb7013 | 1192 | int ret; |
d8f66248 | 1193 | /* |
b3165f41 ACM |
1194 | * FIXME: perf_session__new should allow passing a O_MMAP, so that all this |
1195 | * mmap reading, etc is encapsulated in it. Use O_WRONLY for now. | |
d8f66248 | 1196 | */ |
21ef97f0 | 1197 | struct perf_session *session = perf_session__new(NULL, O_WRONLY, false, false, NULL); |
b3165f41 ACM |
1198 | if (session == NULL) |
1199 | return -ENOMEM; | |
07800601 | 1200 | |
d6d901c2 | 1201 | if (target_tid != -1) |
8115d60c ACM |
1202 | perf_event__synthesize_thread(target_tid, perf_event__process, |
1203 | session); | |
5b2bb75a | 1204 | else |
8115d60c | 1205 | perf_event__synthesize_threads(perf_event__process, session); |
5b2bb75a | 1206 | |
72cb7013 | 1207 | start_counters(evsel_list); |
70db7533 ACM |
1208 | first = list_entry(evsel_list->entries.next, struct perf_evsel, node); |
1209 | perf_session__set_sample_type(session, first->attr.sample_type); | |
07800601 | 1210 | |
2f01190a | 1211 | /* Wait for a minimal set of events before starting the snapshot */ |
5c581041 | 1212 | poll(evsel_list->pollfd, evsel_list->nr_fds, 100); |
2f01190a | 1213 | |
d8f66248 | 1214 | perf_session__mmap_read(session); |
2f01190a | 1215 | |
a1645ce1 | 1216 | if (pthread_create(&thread, NULL, display_thread, session)) { |
07800601 IM |
1217 | printf("Could not create display thread.\n"); |
1218 | exit(-1); | |
1219 | } | |
1220 | ||
1221 | if (realtime_prio) { | |
1222 | struct sched_param param; | |
1223 | ||
1224 | param.sched_priority = realtime_prio; | |
1225 | if (sched_setscheduler(0, SCHED_FIFO, ¶m)) { | |
1226 | printf("Could not set realtime priority.\n"); | |
1227 | exit(-1); | |
1228 | } | |
1229 | } | |
1230 | ||
1231 | while (1) { | |
2debbc83 | 1232 | int hits = samples; |
07800601 | 1233 | |
d8f66248 | 1234 | perf_session__mmap_read(session); |
07800601 | 1235 | |
2debbc83 | 1236 | if (hits == samples) |
5c581041 | 1237 | ret = poll(evsel_list->pollfd, evsel_list->nr_fds, 100); |
07800601 IM |
1238 | } |
1239 | ||
1240 | return 0; | |
1241 | } | |
b456bae0 IM |
1242 | |
1243 | static const char * const top_usage[] = { | |
1244 | "perf top [<options>]", | |
1245 | NULL | |
1246 | }; | |
1247 | ||
b456bae0 | 1248 | static const struct option options[] = { |
361c99a6 | 1249 | OPT_CALLBACK('e', "event", &evsel_list, "event", |
86847b62 TG |
1250 | "event selector. use 'perf list' to list available events", |
1251 | parse_events), | |
b456bae0 IM |
1252 | OPT_INTEGER('c', "count", &default_interval, |
1253 | "event period to sample"), | |
1254 | OPT_INTEGER('p', "pid", &target_pid, | |
d6d901c2 ZY |
1255 | "profile events on existing process id"), |
1256 | OPT_INTEGER('t', "tid", &target_tid, | |
1257 | "profile events on existing thread id"), | |
b456bae0 IM |
1258 | OPT_BOOLEAN('a', "all-cpus", &system_wide, |
1259 | "system-wide collection from all CPUs"), | |
c45c6ea2 SE |
1260 | OPT_STRING('C', "cpu", &cpu_list, "cpu", |
1261 | "list of cpus to monitor"), | |
b32d133a ACM |
1262 | OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name, |
1263 | "file", "vmlinux pathname"), | |
8ffcda17 ACM |
1264 | OPT_BOOLEAN('K', "hide_kernel_symbols", &hide_kernel_symbols, |
1265 | "hide kernel symbols"), | |
1967936d | 1266 | OPT_UINTEGER('m', "mmap-pages", &mmap_pages, "number of mmap data pages"), |
b456bae0 IM |
1267 | OPT_INTEGER('r', "realtime", &realtime_prio, |
1268 | "collect data with this RT SCHED_FIFO priority"), | |
db20c003 | 1269 | OPT_INTEGER('d', "delay", &delay_secs, |
b456bae0 IM |
1270 | "number of seconds to delay between refreshes"), |
1271 | OPT_BOOLEAN('D', "dump-symtab", &dump_symtab, | |
1272 | "dump the symbol table used for profiling"), | |
6e53cdf1 | 1273 | OPT_INTEGER('f', "count-filter", &count_filter, |
b456bae0 IM |
1274 | "only display functions with more events than this"), |
1275 | OPT_BOOLEAN('g', "group", &group, | |
1276 | "put the counters into a counter group"), | |
0fdc7e67 MG |
1277 | OPT_BOOLEAN('i', "inherit", &inherit, |
1278 | "child tasks inherit counters"), | |
923c42c1 | 1279 | OPT_STRING('s', "sym-annotate", &sym_filter, "symbol name", |
6cff0e8d | 1280 | "symbol to annotate"), |
1f208ea6 | 1281 | OPT_BOOLEAN('z', "zero", &zero, |
b456bae0 | 1282 | "zero history across updates"), |
6e53cdf1 | 1283 | OPT_INTEGER('F', "freq", &freq, |
b456bae0 | 1284 | "profile at this frequency"), |
6e53cdf1 IM |
1285 | OPT_INTEGER('E', "entries", &print_entries, |
1286 | "display this many functions"), | |
8ffcda17 ACM |
1287 | OPT_BOOLEAN('U', "hide_user_symbols", &hide_user_symbols, |
1288 | "hide user symbols"), | |
c0555642 | 1289 | OPT_INCR('v', "verbose", &verbose, |
3da297a6 | 1290 | "be more verbose (show counter open errors, etc)"), |
b456bae0 IM |
1291 | OPT_END() |
1292 | }; | |
1293 | ||
f37a291c | 1294 | int cmd_top(int argc, const char **argv, const char *prefix __used) |
b456bae0 | 1295 | { |
69aad6f1 ACM |
1296 | struct perf_evsel *pos; |
1297 | int status = -ENOMEM; | |
b456bae0 | 1298 | |
7e2ed097 | 1299 | evsel_list = perf_evlist__new(NULL, NULL); |
361c99a6 ACM |
1300 | if (evsel_list == NULL) |
1301 | return -ENOMEM; | |
1302 | ||
b456bae0 IM |
1303 | page_size = sysconf(_SC_PAGE_SIZE); |
1304 | ||
b456bae0 IM |
1305 | argc = parse_options(argc, argv, options, top_usage, 0); |
1306 | if (argc) | |
1307 | usage_with_options(top_usage, options); | |
1308 | ||
b456bae0 | 1309 | /* CPU and PID are mutually exclusive */ |
c45c6ea2 | 1310 | if (target_tid > 0 && cpu_list) { |
b456bae0 IM |
1311 | printf("WARNING: PID switch overriding CPU\n"); |
1312 | sleep(1); | |
c45c6ea2 | 1313 | cpu_list = NULL; |
b456bae0 IM |
1314 | } |
1315 | ||
7e2ed097 ACM |
1316 | if (target_pid != -1) |
1317 | target_tid = target_pid; | |
1318 | ||
1319 | if (perf_evlist__create_maps(evsel_list, target_pid, | |
1320 | target_tid, cpu_list) < 0) | |
1321 | usage_with_options(top_usage, options); | |
1322 | ||
361c99a6 ACM |
1323 | if (!evsel_list->nr_entries && |
1324 | perf_evlist__add_default(evsel_list) < 0) { | |
69aad6f1 ACM |
1325 | pr_err("Not enough memory for event selector list\n"); |
1326 | return -ENOMEM; | |
1327 | } | |
5a8e5a30 | 1328 | |
2f335a02 FW |
1329 | if (delay_secs < 1) |
1330 | delay_secs = 1; | |
1331 | ||
7e4ff9e3 MG |
1332 | /* |
1333 | * User specified count overrides default frequency. | |
1334 | */ | |
1335 | if (default_interval) | |
1336 | freq = 0; | |
1337 | else if (freq) { | |
1338 | default_interval = freq; | |
1339 | } else { | |
1340 | fprintf(stderr, "frequency and count are zero, aborting\n"); | |
1341 | exit(EXIT_FAILURE); | |
1342 | } | |
1343 | ||
361c99a6 | 1344 | list_for_each_entry(pos, &evsel_list->entries, node) { |
7e2ed097 ACM |
1345 | if (perf_evsel__alloc_fd(pos, evsel_list->cpus->nr, |
1346 | evsel_list->threads->nr) < 0) | |
69aad6f1 ACM |
1347 | goto out_free_fd; |
1348 | /* | |
1349 | * Fill in the ones not specifically initialized via -c: | |
1350 | */ | |
1351 | if (pos->attr.sample_period) | |
1352 | continue; | |
1353 | ||
1354 | pos->attr.sample_period = default_interval; | |
1355 | } | |
1356 | ||
7e2ed097 ACM |
1357 | if (perf_evlist__alloc_pollfd(evsel_list) < 0 || |
1358 | perf_evlist__alloc_mmap(evsel_list) < 0) | |
5c581041 ACM |
1359 | goto out_free_fd; |
1360 | ||
361c99a6 | 1361 | sym_evsel = list_entry(evsel_list->entries.next, struct perf_evsel, node); |
cc841580 | 1362 | |
69aad6f1 | 1363 | symbol_conf.priv_size = (sizeof(struct sym_entry) + |
361c99a6 | 1364 | (evsel_list->nr_entries + 1) * sizeof(unsigned long)); |
69aad6f1 ACM |
1365 | |
1366 | symbol_conf.try_vmlinux_path = (symbol_conf.vmlinux_name == NULL); | |
1367 | if (symbol__init() < 0) | |
1368 | return -1; | |
1369 | ||
13cc5079 | 1370 | get_term_dimensions(&winsize); |
3b6ed988 | 1371 | if (print_entries == 0) { |
13cc5079 | 1372 | update_print_entries(&winsize); |
3b6ed988 ACM |
1373 | signal(SIGWINCH, sig_winch_handler); |
1374 | } | |
1375 | ||
69aad6f1 ACM |
1376 | status = __cmd_top(); |
1377 | out_free_fd: | |
361c99a6 | 1378 | perf_evlist__delete(evsel_list); |
69aad6f1 ACM |
1379 | |
1380 | return status; | |
b456bae0 | 1381 | } |