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" |
148be2c1 | 29 | #include "util/util.h" |
43cbcd8a | 30 | #include <linux/rbtree.h> |
b456bae0 IM |
31 | #include "util/parse-options.h" |
32 | #include "util/parse-events.h" | |
a12b51c4 | 33 | #include "util/cpumap.h" |
69aad6f1 | 34 | #include "util/xyarray.h" |
07800601 | 35 | |
8f28827a FW |
36 | #include "util/debug.h" |
37 | ||
07800601 IM |
38 | #include <assert.h> |
39 | #include <fcntl.h> | |
0e9b20b8 | 40 | |
07800601 | 41 | #include <stdio.h> |
923c42c1 MG |
42 | #include <termios.h> |
43 | #include <unistd.h> | |
9486aa38 | 44 | #include <inttypes.h> |
0e9b20b8 | 45 | |
07800601 | 46 | #include <errno.h> |
07800601 IM |
47 | #include <time.h> |
48 | #include <sched.h> | |
49 | #include <pthread.h> | |
50 | ||
51 | #include <sys/syscall.h> | |
52 | #include <sys/ioctl.h> | |
53 | #include <sys/poll.h> | |
54 | #include <sys/prctl.h> | |
55 | #include <sys/wait.h> | |
56 | #include <sys/uio.h> | |
57 | #include <sys/mman.h> | |
58 | ||
59 | #include <linux/unistd.h> | |
60 | #include <linux/types.h> | |
61 | ||
69aad6f1 | 62 | #define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y)) |
07800601 | 63 | |
361c99a6 ACM |
64 | struct perf_evlist *evsel_list; |
65 | ||
c0555642 | 66 | static bool system_wide = false; |
07800601 | 67 | |
7e4ff9e3 | 68 | static int default_interval = 0; |
07800601 | 69 | |
42e59d7d | 70 | static int count_filter = 5; |
3b6ed988 | 71 | static int print_entries; |
07800601 | 72 | |
42e59d7d | 73 | static int target_pid = -1; |
d6d901c2 | 74 | static int target_tid = -1; |
5c98d466 | 75 | static struct thread_map *threads; |
c0555642 | 76 | static bool inherit = false; |
60d567e2 | 77 | static struct cpu_map *cpus; |
1967936d | 78 | static int realtime_prio = 0; |
c0555642 | 79 | static bool group = false; |
07800601 | 80 | static unsigned int page_size; |
42e59d7d IM |
81 | static unsigned int mmap_pages = 16; |
82 | static int freq = 1000; /* 1 KHz */ | |
07800601 | 83 | |
42e59d7d | 84 | static int delay_secs = 2; |
c0555642 IM |
85 | static bool zero = false; |
86 | static bool dump_symtab = false; | |
07800601 | 87 | |
8ffcda17 ACM |
88 | static bool hide_kernel_symbols = false; |
89 | static bool hide_user_symbols = false; | |
13cc5079 | 90 | static struct winsize winsize; |
8ffcda17 | 91 | |
923c42c1 MG |
92 | /* |
93 | * Source | |
94 | */ | |
95 | ||
96 | struct source_line { | |
97 | u64 eip; | |
98 | unsigned long count[MAX_COUNTERS]; | |
99 | char *line; | |
100 | struct source_line *next; | |
101 | }; | |
102 | ||
edb7c60e | 103 | static const char *sym_filter = NULL; |
42e59d7d | 104 | struct sym_entry *sym_filter_entry = NULL; |
6cff0e8d | 105 | struct sym_entry *sym_filter_entry_sched = NULL; |
42e59d7d IM |
106 | static int sym_pcnt_filter = 5; |
107 | static int sym_counter = 0; | |
69aad6f1 | 108 | static struct perf_evsel *sym_evsel = NULL; |
42e59d7d | 109 | static int display_weighted = -1; |
c45c6ea2 | 110 | static const char *cpu_list; |
923c42c1 | 111 | |
07800601 IM |
112 | /* |
113 | * Symbols | |
114 | */ | |
115 | ||
b269876c ACM |
116 | struct sym_entry_source { |
117 | struct source_line *source; | |
118 | struct source_line *lines; | |
119 | struct source_line **lines_tail; | |
120 | pthread_mutex_t lock; | |
121 | }; | |
122 | ||
07800601 | 123 | struct sym_entry { |
de04687f ACM |
124 | struct rb_node rb_node; |
125 | struct list_head node; | |
c44613a4 ACM |
126 | unsigned long snap_count; |
127 | double weight; | |
07800601 | 128 | int skip; |
13cc5079 | 129 | u16 name_len; |
8ffcda17 | 130 | u8 origin; |
439d473b | 131 | struct map *map; |
b269876c | 132 | struct sym_entry_source *src; |
5a8e5a30 | 133 | unsigned long count[0]; |
07800601 IM |
134 | }; |
135 | ||
923c42c1 MG |
136 | /* |
137 | * Source functions | |
138 | */ | |
139 | ||
51a472de ACM |
140 | static inline struct symbol *sym_entry__symbol(struct sym_entry *self) |
141 | { | |
b32d133a | 142 | return ((void *)self) + symbol_conf.priv_size; |
51a472de ACM |
143 | } |
144 | ||
895f0edc | 145 | void get_term_dimensions(struct winsize *ws) |
3b6ed988 | 146 | { |
13cc5079 ACM |
147 | char *s = getenv("LINES"); |
148 | ||
149 | if (s != NULL) { | |
150 | ws->ws_row = atoi(s); | |
151 | s = getenv("COLUMNS"); | |
152 | if (s != NULL) { | |
153 | ws->ws_col = atoi(s); | |
154 | if (ws->ws_row && ws->ws_col) | |
155 | return; | |
156 | } | |
3b6ed988 | 157 | } |
13cc5079 ACM |
158 | #ifdef TIOCGWINSZ |
159 | if (ioctl(1, TIOCGWINSZ, ws) == 0 && | |
160 | ws->ws_row && ws->ws_col) | |
161 | return; | |
3b6ed988 | 162 | #endif |
13cc5079 ACM |
163 | ws->ws_row = 25; |
164 | ws->ws_col = 80; | |
3b6ed988 ACM |
165 | } |
166 | ||
13cc5079 | 167 | static void update_print_entries(struct winsize *ws) |
3b6ed988 | 168 | { |
13cc5079 ACM |
169 | print_entries = ws->ws_row; |
170 | ||
3b6ed988 ACM |
171 | if (print_entries > 9) |
172 | print_entries -= 9; | |
173 | } | |
174 | ||
175 | static void sig_winch_handler(int sig __used) | |
176 | { | |
13cc5079 ACM |
177 | get_term_dimensions(&winsize); |
178 | update_print_entries(&winsize); | |
3b6ed988 ACM |
179 | } |
180 | ||
b0a9ab62 | 181 | static int parse_source(struct sym_entry *syme) |
923c42c1 MG |
182 | { |
183 | struct symbol *sym; | |
b269876c | 184 | struct sym_entry_source *source; |
439d473b | 185 | struct map *map; |
923c42c1 | 186 | FILE *file; |
83a0944f | 187 | char command[PATH_MAX*2]; |
439d473b ACM |
188 | const char *path; |
189 | u64 len; | |
923c42c1 MG |
190 | |
191 | if (!syme) | |
b0a9ab62 ACM |
192 | return -1; |
193 | ||
194 | sym = sym_entry__symbol(syme); | |
195 | map = syme->map; | |
196 | ||
197 | /* | |
198 | * We can't annotate with just /proc/kallsyms | |
199 | */ | |
200 | if (map->dso->origin == DSO__ORIG_KERNEL) | |
201 | return -1; | |
923c42c1 | 202 | |
b269876c | 203 | if (syme->src == NULL) { |
36479484 | 204 | syme->src = zalloc(sizeof(*source)); |
b269876c | 205 | if (syme->src == NULL) |
b0a9ab62 | 206 | return -1; |
b269876c ACM |
207 | pthread_mutex_init(&syme->src->lock, NULL); |
208 | } | |
209 | ||
210 | source = syme->src; | |
211 | ||
212 | if (source->lines) { | |
213 | pthread_mutex_lock(&source->lock); | |
923c42c1 MG |
214 | goto out_assign; |
215 | } | |
439d473b | 216 | path = map->dso->long_name; |
923c42c1 | 217 | |
923c42c1 MG |
218 | len = sym->end - sym->start; |
219 | ||
439d473b | 220 | sprintf(command, |
9486aa38 | 221 | "objdump --start-address=%#0*" PRIx64 " --stop-address=%#0*" PRIx64 " -dS %s", |
5f485364 ACM |
222 | BITS_PER_LONG / 4, map__rip_2objdump(map, sym->start), |
223 | BITS_PER_LONG / 4, map__rip_2objdump(map, sym->end), path); | |
923c42c1 MG |
224 | |
225 | file = popen(command, "r"); | |
226 | if (!file) | |
b0a9ab62 | 227 | return -1; |
923c42c1 | 228 | |
b269876c ACM |
229 | pthread_mutex_lock(&source->lock); |
230 | source->lines_tail = &source->lines; | |
923c42c1 MG |
231 | while (!feof(file)) { |
232 | struct source_line *src; | |
233 | size_t dummy = 0; | |
ee11b90b | 234 | char *c, *sep; |
923c42c1 MG |
235 | |
236 | src = malloc(sizeof(struct source_line)); | |
237 | assert(src != NULL); | |
238 | memset(src, 0, sizeof(struct source_line)); | |
239 | ||
240 | if (getline(&src->line, &dummy, file) < 0) | |
241 | break; | |
242 | if (!src->line) | |
243 | break; | |
244 | ||
245 | c = strchr(src->line, '\n'); | |
246 | if (c) | |
247 | *c = 0; | |
248 | ||
249 | src->next = NULL; | |
b269876c ACM |
250 | *source->lines_tail = src; |
251 | source->lines_tail = &src->next; | |
923c42c1 | 252 | |
ee11b90b KS |
253 | src->eip = strtoull(src->line, &sep, 16); |
254 | if (*sep == ':') | |
255 | src->eip = map__objdump_2ip(map, src->eip); | |
256 | else /* this line has no ip info (e.g. source line) */ | |
257 | src->eip = 0; | |
923c42c1 MG |
258 | } |
259 | pclose(file); | |
260 | out_assign: | |
261 | sym_filter_entry = syme; | |
b269876c | 262 | pthread_mutex_unlock(&source->lock); |
b0a9ab62 | 263 | return 0; |
923c42c1 MG |
264 | } |
265 | ||
266 | static void __zero_source_counters(struct sym_entry *syme) | |
267 | { | |
268 | int i; | |
269 | struct source_line *line; | |
270 | ||
b269876c | 271 | line = syme->src->lines; |
923c42c1 | 272 | while (line) { |
361c99a6 | 273 | for (i = 0; i < evsel_list->nr_entries; i++) |
923c42c1 MG |
274 | line->count[i] = 0; |
275 | line = line->next; | |
276 | } | |
277 | } | |
278 | ||
279 | static void record_precise_ip(struct sym_entry *syme, int counter, u64 ip) | |
280 | { | |
281 | struct source_line *line; | |
282 | ||
283 | if (syme != sym_filter_entry) | |
284 | return; | |
285 | ||
b269876c | 286 | if (pthread_mutex_trylock(&syme->src->lock)) |
923c42c1 MG |
287 | return; |
288 | ||
b269876c | 289 | if (syme->src == NULL || syme->src->source == NULL) |
923c42c1 MG |
290 | goto out_unlock; |
291 | ||
b269876c | 292 | for (line = syme->src->lines; line; line = line->next) { |
ee11b90b KS |
293 | /* skip lines without IP info */ |
294 | if (line->eip == 0) | |
295 | continue; | |
923c42c1 MG |
296 | if (line->eip == ip) { |
297 | line->count[counter]++; | |
298 | break; | |
299 | } | |
300 | if (line->eip > ip) | |
301 | break; | |
302 | } | |
303 | out_unlock: | |
b269876c | 304 | pthread_mutex_unlock(&syme->src->lock); |
923c42c1 MG |
305 | } |
306 | ||
c7ad21af ACM |
307 | #define PATTERN_LEN (BITS_PER_LONG / 4 + 2) |
308 | ||
923c42c1 MG |
309 | static void lookup_sym_source(struct sym_entry *syme) |
310 | { | |
51a472de | 311 | struct symbol *symbol = sym_entry__symbol(syme); |
923c42c1 | 312 | struct source_line *line; |
c7ad21af | 313 | char pattern[PATTERN_LEN + 1]; |
923c42c1 | 314 | |
9486aa38 | 315 | sprintf(pattern, "%0*" PRIx64 " <", BITS_PER_LONG / 4, |
5f485364 | 316 | map__rip_2objdump(syme->map, symbol->start)); |
923c42c1 | 317 | |
b269876c ACM |
318 | pthread_mutex_lock(&syme->src->lock); |
319 | for (line = syme->src->lines; line; line = line->next) { | |
c7ad21af | 320 | if (memcmp(line->line, pattern, PATTERN_LEN) == 0) { |
b269876c | 321 | syme->src->source = line; |
923c42c1 MG |
322 | break; |
323 | } | |
324 | } | |
b269876c | 325 | pthread_mutex_unlock(&syme->src->lock); |
923c42c1 MG |
326 | } |
327 | ||
328 | static void show_lines(struct source_line *queue, int count, int total) | |
329 | { | |
330 | int i; | |
331 | struct source_line *line; | |
332 | ||
333 | line = queue; | |
334 | for (i = 0; i < count; i++) { | |
335 | float pcnt = 100.0*(float)line->count[sym_counter]/(float)total; | |
336 | ||
337 | printf("%8li %4.1f%%\t%s\n", line->count[sym_counter], pcnt, line->line); | |
338 | line = line->next; | |
339 | } | |
340 | } | |
341 | ||
342 | #define TRACE_COUNT 3 | |
343 | ||
344 | static void show_details(struct sym_entry *syme) | |
345 | { | |
346 | struct symbol *symbol; | |
347 | struct source_line *line; | |
348 | struct source_line *line_queue = NULL; | |
349 | int displayed = 0; | |
350 | int line_queue_count = 0, total = 0, more = 0; | |
351 | ||
352 | if (!syme) | |
353 | return; | |
354 | ||
b269876c | 355 | if (!syme->src->source) |
923c42c1 MG |
356 | lookup_sym_source(syme); |
357 | ||
b269876c | 358 | if (!syme->src->source) |
923c42c1 MG |
359 | return; |
360 | ||
51a472de | 361 | symbol = sym_entry__symbol(syme); |
69aad6f1 | 362 | printf("Showing %s for %s\n", event_name(sym_evsel), symbol->name); |
923c42c1 MG |
363 | printf(" Events Pcnt (>=%d%%)\n", sym_pcnt_filter); |
364 | ||
b269876c ACM |
365 | pthread_mutex_lock(&syme->src->lock); |
366 | line = syme->src->source; | |
923c42c1 MG |
367 | while (line) { |
368 | total += line->count[sym_counter]; | |
369 | line = line->next; | |
370 | } | |
371 | ||
b269876c | 372 | line = syme->src->source; |
923c42c1 MG |
373 | while (line) { |
374 | float pcnt = 0.0; | |
375 | ||
376 | if (!line_queue_count) | |
377 | line_queue = line; | |
378 | line_queue_count++; | |
379 | ||
380 | if (line->count[sym_counter]) | |
381 | pcnt = 100.0 * line->count[sym_counter] / (float)total; | |
382 | if (pcnt >= (float)sym_pcnt_filter) { | |
383 | if (displayed <= print_entries) | |
384 | show_lines(line_queue, line_queue_count, total); | |
385 | else more++; | |
386 | displayed += line_queue_count; | |
387 | line_queue_count = 0; | |
388 | line_queue = NULL; | |
389 | } else if (line_queue_count > TRACE_COUNT) { | |
390 | line_queue = line_queue->next; | |
391 | line_queue_count--; | |
392 | } | |
393 | ||
394 | line->count[sym_counter] = zero ? 0 : line->count[sym_counter] * 7 / 8; | |
395 | line = line->next; | |
396 | } | |
b269876c | 397 | pthread_mutex_unlock(&syme->src->lock); |
923c42c1 MG |
398 | if (more) |
399 | printf("%d lines not displayed, maybe increase display entries [e]\n", more); | |
400 | } | |
07800601 | 401 | |
de04687f | 402 | /* |
5b2bb75a | 403 | * Symbols will be added here in event__process_sample and will get out |
de04687f ACM |
404 | * after decayed. |
405 | */ | |
406 | static LIST_HEAD(active_symbols); | |
c44613a4 | 407 | static pthread_mutex_t active_symbols_lock = PTHREAD_MUTEX_INITIALIZER; |
07800601 | 408 | |
07800601 IM |
409 | /* |
410 | * Ordering weight: count-1 * count-2 * ... / count-n | |
411 | */ | |
412 | static double sym_weight(const struct sym_entry *sym) | |
413 | { | |
c44613a4 | 414 | double weight = sym->snap_count; |
07800601 IM |
415 | int counter; |
416 | ||
46ab9764 MG |
417 | if (!display_weighted) |
418 | return weight; | |
419 | ||
361c99a6 | 420 | for (counter = 1; counter < evsel_list->nr_entries - 1; counter++) |
07800601 IM |
421 | weight *= sym->count[counter]; |
422 | ||
423 | weight /= (sym->count[counter] + 1); | |
424 | ||
425 | return weight; | |
426 | } | |
427 | ||
2debbc83 | 428 | static long samples; |
a1645ce1 | 429 | static long kernel_samples, us_samples; |
1676b8a0 | 430 | static long exact_samples; |
a1645ce1 | 431 | static long guest_us_samples, guest_kernel_samples; |
07800601 IM |
432 | static const char CONSOLE_CLEAR[] = "\e[H\e[2J"; |
433 | ||
c44613a4 | 434 | static void __list_insert_active_sym(struct sym_entry *syme) |
de04687f ACM |
435 | { |
436 | list_add(&syme->node, &active_symbols); | |
437 | } | |
438 | ||
c44613a4 ACM |
439 | static void list_remove_active_sym(struct sym_entry *syme) |
440 | { | |
441 | pthread_mutex_lock(&active_symbols_lock); | |
442 | list_del_init(&syme->node); | |
443 | pthread_mutex_unlock(&active_symbols_lock); | |
444 | } | |
445 | ||
de04687f ACM |
446 | static void rb_insert_active_sym(struct rb_root *tree, struct sym_entry *se) |
447 | { | |
448 | struct rb_node **p = &tree->rb_node; | |
449 | struct rb_node *parent = NULL; | |
450 | struct sym_entry *iter; | |
451 | ||
452 | while (*p != NULL) { | |
453 | parent = *p; | |
454 | iter = rb_entry(parent, struct sym_entry, rb_node); | |
455 | ||
c44613a4 | 456 | if (se->weight > iter->weight) |
de04687f ACM |
457 | p = &(*p)->rb_left; |
458 | else | |
459 | p = &(*p)->rb_right; | |
460 | } | |
461 | ||
462 | rb_link_node(&se->rb_node, parent, p); | |
463 | rb_insert_color(&se->rb_node, tree); | |
464 | } | |
07800601 IM |
465 | |
466 | static void print_sym_table(void) | |
467 | { | |
233f0b95 | 468 | int printed = 0, j; |
69aad6f1 ACM |
469 | struct perf_evsel *counter; |
470 | int snap = !display_weighted ? sym_counter : 0; | |
2debbc83 | 471 | float samples_per_sec = samples/delay_secs; |
a1645ce1 ZY |
472 | float ksamples_per_sec = kernel_samples/delay_secs; |
473 | float us_samples_per_sec = (us_samples)/delay_secs; | |
474 | float guest_kernel_samples_per_sec = (guest_kernel_samples)/delay_secs; | |
475 | float guest_us_samples_per_sec = (guest_us_samples)/delay_secs; | |
1676b8a0 | 476 | float esamples_percent = (100.0*exact_samples)/samples; |
2debbc83 | 477 | float sum_ksamples = 0.0; |
de04687f ACM |
478 | struct sym_entry *syme, *n; |
479 | struct rb_root tmp = RB_ROOT; | |
480 | struct rb_node *nd; | |
00909e95 | 481 | int sym_width = 0, dso_width = 0, dso_short_width = 0; |
13cc5079 | 482 | const int win_width = winsize.ws_col - 1; |
07800601 | 483 | |
a1645ce1 ZY |
484 | samples = us_samples = kernel_samples = exact_samples = 0; |
485 | guest_kernel_samples = guest_us_samples = 0; | |
07800601 | 486 | |
de04687f | 487 | /* Sort the active symbols */ |
c44613a4 ACM |
488 | pthread_mutex_lock(&active_symbols_lock); |
489 | syme = list_entry(active_symbols.next, struct sym_entry, node); | |
490 | pthread_mutex_unlock(&active_symbols_lock); | |
491 | ||
492 | list_for_each_entry_safe_from(syme, n, &active_symbols, node) { | |
46ab9764 | 493 | syme->snap_count = syme->count[snap]; |
c44613a4 | 494 | if (syme->snap_count != 0) { |
13cc5079 | 495 | |
8ffcda17 ACM |
496 | if ((hide_user_symbols && |
497 | syme->origin == PERF_RECORD_MISC_USER) || | |
498 | (hide_kernel_symbols && | |
499 | syme->origin == PERF_RECORD_MISC_KERNEL)) { | |
500 | list_remove_active_sym(syme); | |
501 | continue; | |
502 | } | |
c44613a4 | 503 | syme->weight = sym_weight(syme); |
de04687f | 504 | rb_insert_active_sym(&tmp, syme); |
2debbc83 | 505 | sum_ksamples += syme->snap_count; |
d94b9430 | 506 | |
361c99a6 | 507 | for (j = 0; j < evsel_list->nr_entries; j++) |
de04687f ACM |
508 | syme->count[j] = zero ? 0 : syme->count[j] * 7 / 8; |
509 | } else | |
c44613a4 | 510 | list_remove_active_sym(syme); |
d94b9430 MG |
511 | } |
512 | ||
0f5486b5 | 513 | puts(CONSOLE_CLEAR); |
07800601 | 514 | |
13cc5079 | 515 | printf("%-*.*s\n", win_width, win_width, graph_dotted_line); |
a1645ce1 ZY |
516 | if (!perf_guest) { |
517 | printf(" PerfTop:%8.0f irqs/sec kernel:%4.1f%%" | |
518 | " exact: %4.1f%% [", | |
519 | samples_per_sec, | |
520 | 100.0 - (100.0 * ((samples_per_sec - ksamples_per_sec) / | |
521 | samples_per_sec)), | |
522 | esamples_percent); | |
523 | } else { | |
524 | printf(" PerfTop:%8.0f irqs/sec kernel:%4.1f%% us:%4.1f%%" | |
525 | " guest kernel:%4.1f%% guest us:%4.1f%%" | |
526 | " exact: %4.1f%% [", | |
527 | samples_per_sec, | |
528 | 100.0 - (100.0 * ((samples_per_sec-ksamples_per_sec) / | |
529 | samples_per_sec)), | |
530 | 100.0 - (100.0 * ((samples_per_sec-us_samples_per_sec) / | |
531 | samples_per_sec)), | |
532 | 100.0 - (100.0 * ((samples_per_sec - | |
533 | guest_kernel_samples_per_sec) / | |
534 | samples_per_sec)), | |
535 | 100.0 - (100.0 * ((samples_per_sec - | |
536 | guest_us_samples_per_sec) / | |
537 | samples_per_sec)), | |
538 | esamples_percent); | |
539 | } | |
07800601 | 540 | |
361c99a6 | 541 | if (evsel_list->nr_entries == 1 || !display_weighted) { |
69aad6f1 | 542 | struct perf_evsel *first; |
361c99a6 | 543 | first = list_entry(evsel_list->entries.next, struct perf_evsel, node); |
9486aa38 | 544 | printf("%" PRIu64, (uint64_t)first->attr.sample_period); |
cf1f4574 IM |
545 | if (freq) |
546 | printf("Hz "); | |
547 | else | |
548 | printf(" "); | |
549 | } | |
07800601 | 550 | |
46ab9764 | 551 | if (!display_weighted) |
69aad6f1 | 552 | printf("%s", event_name(sym_evsel)); |
361c99a6 | 553 | else list_for_each_entry(counter, &evsel_list->entries, node) { |
69aad6f1 | 554 | if (counter->idx) |
07800601 IM |
555 | printf("/"); |
556 | ||
557 | printf("%s", event_name(counter)); | |
558 | } | |
559 | ||
560 | printf( "], "); | |
561 | ||
b456bae0 IM |
562 | if (target_pid != -1) |
563 | printf(" (target_pid: %d", target_pid); | |
d6d901c2 ZY |
564 | else if (target_tid != -1) |
565 | printf(" (target_tid: %d", target_tid); | |
07800601 IM |
566 | else |
567 | printf(" (all"); | |
568 | ||
01797c59 | 569 | if (cpu_list) |
60d567e2 | 570 | printf(", CPU%s: %s)\n", cpus->nr > 1 ? "s" : "", cpu_list); |
07800601 | 571 | else { |
d6d901c2 | 572 | if (target_tid != -1) |
07800601 IM |
573 | printf(")\n"); |
574 | else | |
60d567e2 | 575 | printf(", %d CPU%s)\n", cpus->nr, cpus->nr > 1 ? "s" : ""); |
07800601 IM |
576 | } |
577 | ||
1a105f74 | 578 | printf("%-*.*s\n", win_width, win_width, graph_dotted_line); |
07800601 | 579 | |
923c42c1 MG |
580 | if (sym_filter_entry) { |
581 | show_details(sym_filter_entry); | |
582 | return; | |
583 | } | |
584 | ||
13cc5079 ACM |
585 | /* |
586 | * Find the longest symbol name that will be displayed | |
587 | */ | |
588 | for (nd = rb_first(&tmp); nd; nd = rb_next(nd)) { | |
589 | syme = rb_entry(nd, struct sym_entry, rb_node); | |
590 | if (++printed > print_entries || | |
591 | (int)syme->snap_count < count_filter) | |
592 | continue; | |
593 | ||
1a105f74 ACM |
594 | if (syme->map->dso->long_name_len > dso_width) |
595 | dso_width = syme->map->dso->long_name_len; | |
596 | ||
b63be8d7 ACM |
597 | if (syme->map->dso->short_name_len > dso_short_width) |
598 | dso_short_width = syme->map->dso->short_name_len; | |
599 | ||
13cc5079 ACM |
600 | if (syme->name_len > sym_width) |
601 | sym_width = syme->name_len; | |
602 | } | |
603 | ||
604 | printed = 0; | |
605 | ||
b63be8d7 ACM |
606 | if (sym_width + dso_width > winsize.ws_col - 29) { |
607 | dso_width = dso_short_width; | |
608 | if (sym_width + dso_width > winsize.ws_col - 29) | |
609 | sym_width = winsize.ws_col - dso_width - 29; | |
610 | } | |
7cc017ed | 611 | putchar('\n'); |
361c99a6 | 612 | if (evsel_list->nr_entries == 1) |
5b2bb75a | 613 | printf(" samples pcnt"); |
07800601 | 614 | else |
5b2bb75a | 615 | printf(" weight samples pcnt"); |
07800601 | 616 | |
7ced156b ACM |
617 | if (verbose) |
618 | printf(" RIP "); | |
7cc017ed | 619 | printf(" %-*.*s DSO\n", sym_width, sym_width, "function"); |
5b2bb75a | 620 | printf(" %s _______ _____", |
361c99a6 | 621 | evsel_list->nr_entries == 1 ? " " : "______"); |
7ced156b | 622 | if (verbose) |
5b2bb75a | 623 | printf(" ________________"); |
1a105f74 | 624 | printf(" %-*.*s", sym_width, sym_width, graph_line); |
7cc017ed | 625 | printf(" %-*.*s", dso_width, dso_width, graph_line); |
1a105f74 | 626 | puts("\n"); |
07800601 | 627 | |
de04687f | 628 | for (nd = rb_first(&tmp); nd; nd = rb_next(nd)) { |
83a0944f | 629 | struct symbol *sym; |
8fc0321f | 630 | double pcnt; |
d94b9430 | 631 | |
83a0944f | 632 | syme = rb_entry(nd, struct sym_entry, rb_node); |
51a472de | 633 | sym = sym_entry__symbol(syme); |
923c42c1 | 634 | if (++printed > print_entries || (int)syme->snap_count < count_filter) |
c44613a4 | 635 | continue; |
d94b9430 | 636 | |
2debbc83 IM |
637 | pcnt = 100.0 - (100.0 * ((sum_ksamples - syme->snap_count) / |
638 | sum_ksamples)); | |
d94b9430 | 639 | |
361c99a6 | 640 | if (evsel_list->nr_entries == 1 || !display_weighted) |
5b2bb75a | 641 | printf("%20.2f ", syme->weight); |
d94b9430 | 642 | else |
5b2bb75a | 643 | printf("%9.1f %10ld ", syme->weight, syme->snap_count); |
8fc0321f | 644 | |
1e11fd82 | 645 | percent_color_fprintf(stdout, "%4.1f%%", pcnt); |
7ced156b | 646 | if (verbose) |
9486aa38 | 647 | printf(" %016" PRIx64, sym->start); |
13cc5079 | 648 | printf(" %-*.*s", sym_width, sym_width, sym->name); |
7cc017ed ACM |
649 | printf(" %-*.*s\n", dso_width, dso_width, |
650 | dso_width >= syme->map->dso->long_name_len ? | |
651 | syme->map->dso->long_name : | |
652 | syme->map->dso->short_name); | |
07800601 | 653 | } |
07800601 IM |
654 | } |
655 | ||
923c42c1 MG |
656 | static void prompt_integer(int *target, const char *msg) |
657 | { | |
658 | char *buf = malloc(0), *p; | |
659 | size_t dummy = 0; | |
660 | int tmp; | |
661 | ||
662 | fprintf(stdout, "\n%s: ", msg); | |
663 | if (getline(&buf, &dummy, stdin) < 0) | |
664 | return; | |
665 | ||
666 | p = strchr(buf, '\n'); | |
667 | if (p) | |
668 | *p = 0; | |
669 | ||
670 | p = buf; | |
671 | while(*p) { | |
672 | if (!isdigit(*p)) | |
673 | goto out_free; | |
674 | p++; | |
675 | } | |
676 | tmp = strtoul(buf, NULL, 10); | |
677 | *target = tmp; | |
678 | out_free: | |
679 | free(buf); | |
680 | } | |
681 | ||
682 | static void prompt_percent(int *target, const char *msg) | |
683 | { | |
684 | int tmp = 0; | |
685 | ||
686 | prompt_integer(&tmp, msg); | |
687 | if (tmp >= 0 && tmp <= 100) | |
688 | *target = tmp; | |
689 | } | |
690 | ||
691 | static void prompt_symbol(struct sym_entry **target, const char *msg) | |
692 | { | |
693 | char *buf = malloc(0), *p; | |
694 | struct sym_entry *syme = *target, *n, *found = NULL; | |
695 | size_t dummy = 0; | |
696 | ||
697 | /* zero counters of active symbol */ | |
698 | if (syme) { | |
b269876c | 699 | pthread_mutex_lock(&syme->src->lock); |
923c42c1 MG |
700 | __zero_source_counters(syme); |
701 | *target = NULL; | |
b269876c | 702 | pthread_mutex_unlock(&syme->src->lock); |
923c42c1 MG |
703 | } |
704 | ||
705 | fprintf(stdout, "\n%s: ", msg); | |
706 | if (getline(&buf, &dummy, stdin) < 0) | |
707 | goto out_free; | |
708 | ||
709 | p = strchr(buf, '\n'); | |
710 | if (p) | |
711 | *p = 0; | |
712 | ||
713 | pthread_mutex_lock(&active_symbols_lock); | |
714 | syme = list_entry(active_symbols.next, struct sym_entry, node); | |
715 | pthread_mutex_unlock(&active_symbols_lock); | |
716 | ||
717 | list_for_each_entry_safe_from(syme, n, &active_symbols, node) { | |
51a472de | 718 | struct symbol *sym = sym_entry__symbol(syme); |
923c42c1 MG |
719 | |
720 | if (!strcmp(buf, sym->name)) { | |
721 | found = syme; | |
722 | break; | |
723 | } | |
724 | } | |
725 | ||
726 | if (!found) { | |
66aeb6d5 | 727 | fprintf(stderr, "Sorry, %s is not active.\n", buf); |
923c42c1 MG |
728 | sleep(1); |
729 | return; | |
730 | } else | |
731 | parse_source(found); | |
732 | ||
733 | out_free: | |
734 | free(buf); | |
735 | } | |
736 | ||
091bd2e9 | 737 | static void print_mapped_keys(void) |
923c42c1 | 738 | { |
091bd2e9 MG |
739 | char *name = NULL; |
740 | ||
741 | if (sym_filter_entry) { | |
51a472de | 742 | struct symbol *sym = sym_entry__symbol(sym_filter_entry); |
091bd2e9 MG |
743 | name = sym->name; |
744 | } | |
745 | ||
746 | fprintf(stdout, "\nMapped keys:\n"); | |
747 | fprintf(stdout, "\t[d] display refresh delay. \t(%d)\n", delay_secs); | |
748 | fprintf(stdout, "\t[e] display entries (lines). \t(%d)\n", print_entries); | |
749 | ||
361c99a6 | 750 | if (evsel_list->nr_entries > 1) |
69aad6f1 | 751 | fprintf(stdout, "\t[E] active event counter. \t(%s)\n", event_name(sym_evsel)); |
091bd2e9 MG |
752 | |
753 | fprintf(stdout, "\t[f] profile display filter (count). \t(%d)\n", count_filter); | |
754 | ||
6cff0e8d KS |
755 | fprintf(stdout, "\t[F] annotate display filter (percent). \t(%d%%)\n", sym_pcnt_filter); |
756 | fprintf(stdout, "\t[s] annotate symbol. \t(%s)\n", name?: "NULL"); | |
757 | fprintf(stdout, "\t[S] stop annotation.\n"); | |
091bd2e9 | 758 | |
361c99a6 | 759 | if (evsel_list->nr_entries > 1) |
091bd2e9 MG |
760 | fprintf(stdout, "\t[w] toggle display weighted/count[E]r. \t(%d)\n", display_weighted ? 1 : 0); |
761 | ||
8ffcda17 | 762 | fprintf(stdout, |
1a72cfa6 | 763 | "\t[K] hide kernel_symbols symbols. \t(%s)\n", |
8ffcda17 ACM |
764 | hide_kernel_symbols ? "yes" : "no"); |
765 | fprintf(stdout, | |
766 | "\t[U] hide user symbols. \t(%s)\n", | |
767 | hide_user_symbols ? "yes" : "no"); | |
46ab9764 | 768 | fprintf(stdout, "\t[z] toggle sample zeroing. \t(%d)\n", zero ? 1 : 0); |
091bd2e9 MG |
769 | fprintf(stdout, "\t[qQ] quit.\n"); |
770 | } | |
771 | ||
772 | static int key_mapped(int c) | |
773 | { | |
774 | switch (c) { | |
775 | case 'd': | |
776 | case 'e': | |
777 | case 'f': | |
778 | case 'z': | |
779 | case 'q': | |
780 | case 'Q': | |
8ffcda17 ACM |
781 | case 'K': |
782 | case 'U': | |
6cff0e8d KS |
783 | case 'F': |
784 | case 's': | |
785 | case 'S': | |
091bd2e9 MG |
786 | return 1; |
787 | case 'E': | |
788 | case 'w': | |
361c99a6 | 789 | return evsel_list->nr_entries > 1 ? 1 : 0; |
83a0944f IM |
790 | default: |
791 | break; | |
091bd2e9 MG |
792 | } |
793 | ||
794 | return 0; | |
923c42c1 MG |
795 | } |
796 | ||
a1645ce1 | 797 | static void handle_keypress(struct perf_session *session, int c) |
923c42c1 | 798 | { |
091bd2e9 MG |
799 | if (!key_mapped(c)) { |
800 | struct pollfd stdin_poll = { .fd = 0, .events = POLLIN }; | |
801 | struct termios tc, save; | |
802 | ||
803 | print_mapped_keys(); | |
804 | fprintf(stdout, "\nEnter selection, or unmapped key to continue: "); | |
805 | fflush(stdout); | |
806 | ||
807 | tcgetattr(0, &save); | |
808 | tc = save; | |
809 | tc.c_lflag &= ~(ICANON | ECHO); | |
810 | tc.c_cc[VMIN] = 0; | |
811 | tc.c_cc[VTIME] = 0; | |
812 | tcsetattr(0, TCSANOW, &tc); | |
813 | ||
814 | poll(&stdin_poll, 1, -1); | |
815 | c = getc(stdin); | |
816 | ||
817 | tcsetattr(0, TCSAFLUSH, &save); | |
818 | if (!key_mapped(c)) | |
819 | return; | |
820 | } | |
821 | ||
923c42c1 MG |
822 | switch (c) { |
823 | case 'd': | |
824 | prompt_integer(&delay_secs, "Enter display delay"); | |
dc79959a TB |
825 | if (delay_secs < 1) |
826 | delay_secs = 1; | |
923c42c1 MG |
827 | break; |
828 | case 'e': | |
829 | prompt_integer(&print_entries, "Enter display entries (lines)"); | |
3b6ed988 | 830 | if (print_entries == 0) { |
13cc5079 | 831 | sig_winch_handler(SIGWINCH); |
3b6ed988 ACM |
832 | signal(SIGWINCH, sig_winch_handler); |
833 | } else | |
834 | signal(SIGWINCH, SIG_DFL); | |
923c42c1 MG |
835 | break; |
836 | case 'E': | |
361c99a6 | 837 | if (evsel_list->nr_entries > 1) { |
923c42c1 | 838 | fprintf(stderr, "\nAvailable events:"); |
69aad6f1 | 839 | |
361c99a6 | 840 | list_for_each_entry(sym_evsel, &evsel_list->entries, node) |
69aad6f1 | 841 | fprintf(stderr, "\n\t%d %s", sym_evsel->idx, event_name(sym_evsel)); |
923c42c1 MG |
842 | |
843 | prompt_integer(&sym_counter, "Enter details event counter"); | |
844 | ||
361c99a6 ACM |
845 | if (sym_counter >= evsel_list->nr_entries) { |
846 | sym_evsel = list_entry(evsel_list->entries.next, struct perf_evsel, node); | |
923c42c1 | 847 | sym_counter = 0; |
69aad6f1 | 848 | fprintf(stderr, "Sorry, no such event, using %s.\n", event_name(sym_evsel)); |
923c42c1 | 849 | sleep(1); |
69aad6f1 | 850 | break; |
923c42c1 | 851 | } |
361c99a6 | 852 | list_for_each_entry(sym_evsel, &evsel_list->entries, node) |
69aad6f1 ACM |
853 | if (sym_evsel->idx == sym_counter) |
854 | break; | |
923c42c1 MG |
855 | } else sym_counter = 0; |
856 | break; | |
857 | case 'f': | |
858 | prompt_integer(&count_filter, "Enter display event count filter"); | |
859 | break; | |
860 | case 'F': | |
861 | prompt_percent(&sym_pcnt_filter, "Enter details display event filter (percent)"); | |
862 | break; | |
8ffcda17 ACM |
863 | case 'K': |
864 | hide_kernel_symbols = !hide_kernel_symbols; | |
865 | break; | |
923c42c1 MG |
866 | case 'q': |
867 | case 'Q': | |
868 | printf("exiting.\n"); | |
c338aee8 | 869 | if (dump_symtab) |
cbf69680 | 870 | perf_session__fprintf_dsos(session, stderr); |
923c42c1 MG |
871 | exit(0); |
872 | case 's': | |
873 | prompt_symbol(&sym_filter_entry, "Enter details symbol"); | |
874 | break; | |
875 | case 'S': | |
876 | if (!sym_filter_entry) | |
877 | break; | |
878 | else { | |
879 | struct sym_entry *syme = sym_filter_entry; | |
880 | ||
b269876c | 881 | pthread_mutex_lock(&syme->src->lock); |
923c42c1 MG |
882 | sym_filter_entry = NULL; |
883 | __zero_source_counters(syme); | |
b269876c | 884 | pthread_mutex_unlock(&syme->src->lock); |
923c42c1 MG |
885 | } |
886 | break; | |
8ffcda17 ACM |
887 | case 'U': |
888 | hide_user_symbols = !hide_user_symbols; | |
889 | break; | |
46ab9764 MG |
890 | case 'w': |
891 | display_weighted = ~display_weighted; | |
892 | break; | |
923c42c1 | 893 | case 'z': |
c0555642 | 894 | zero = !zero; |
923c42c1 | 895 | break; |
83a0944f IM |
896 | default: |
897 | break; | |
923c42c1 MG |
898 | } |
899 | } | |
900 | ||
f37a291c | 901 | static void *display_thread(void *arg __used) |
07800601 | 902 | { |
0f5486b5 | 903 | struct pollfd stdin_poll = { .fd = 0, .events = POLLIN }; |
923c42c1 MG |
904 | struct termios tc, save; |
905 | int delay_msecs, c; | |
a1645ce1 | 906 | struct perf_session *session = (struct perf_session *) arg; |
923c42c1 MG |
907 | |
908 | tcgetattr(0, &save); | |
909 | tc = save; | |
910 | tc.c_lflag &= ~(ICANON | ECHO); | |
911 | tc.c_cc[VMIN] = 0; | |
912 | tc.c_cc[VTIME] = 0; | |
091bd2e9 | 913 | |
923c42c1 MG |
914 | repeat: |
915 | delay_msecs = delay_secs * 1000; | |
916 | tcsetattr(0, TCSANOW, &tc); | |
917 | /* trash return*/ | |
918 | getc(stdin); | |
07800601 | 919 | |
0f5486b5 | 920 | do { |
07800601 | 921 | print_sym_table(); |
0f5486b5 FW |
922 | } while (!poll(&stdin_poll, 1, delay_msecs) == 1); |
923 | ||
923c42c1 MG |
924 | c = getc(stdin); |
925 | tcsetattr(0, TCSAFLUSH, &save); | |
926 | ||
a1645ce1 | 927 | handle_keypress(session, c); |
923c42c1 | 928 | goto repeat; |
07800601 IM |
929 | |
930 | return NULL; | |
931 | } | |
932 | ||
2ab52083 | 933 | /* Tag samples to be skipped. */ |
f37a291c | 934 | static const char *skip_symbols[] = { |
2ab52083 AB |
935 | "default_idle", |
936 | "cpu_idle", | |
937 | "enter_idle", | |
938 | "exit_idle", | |
939 | "mwait_idle", | |
59b90056 | 940 | "mwait_idle_with_hints", |
8357275b | 941 | "poll_idle", |
3a3393ef AB |
942 | "ppc64_runlatch_off", |
943 | "pseries_dedicated_idle_sleep", | |
2ab52083 AB |
944 | NULL |
945 | }; | |
946 | ||
439d473b | 947 | static int symbol_filter(struct map *map, struct symbol *sym) |
07800601 | 948 | { |
de04687f ACM |
949 | struct sym_entry *syme; |
950 | const char *name = sym->name; | |
2ab52083 | 951 | int i; |
de04687f | 952 | |
3a3393ef AB |
953 | /* |
954 | * ppc64 uses function descriptors and appends a '.' to the | |
955 | * start of every instruction address. Remove it. | |
956 | */ | |
957 | if (name[0] == '.') | |
958 | name++; | |
959 | ||
de04687f ACM |
960 | if (!strcmp(name, "_text") || |
961 | !strcmp(name, "_etext") || | |
962 | !strcmp(name, "_sinittext") || | |
963 | !strncmp("init_module", name, 11) || | |
964 | !strncmp("cleanup_module", name, 14) || | |
965 | strstr(name, "_text_start") || | |
966 | strstr(name, "_text_end")) | |
07800601 | 967 | return 1; |
07800601 | 968 | |
00a192b3 | 969 | syme = symbol__priv(sym); |
439d473b | 970 | syme->map = map; |
b269876c | 971 | syme->src = NULL; |
6cff0e8d KS |
972 | |
973 | if (!sym_filter_entry && sym_filter && !strcmp(name, sym_filter)) { | |
974 | /* schedule initial sym_filter_entry setup */ | |
975 | sym_filter_entry_sched = syme; | |
976 | sym_filter = NULL; | |
977 | } | |
923c42c1 | 978 | |
2ab52083 AB |
979 | for (i = 0; skip_symbols[i]; i++) { |
980 | if (!strcmp(skip_symbols[i], name)) { | |
981 | syme->skip = 1; | |
982 | break; | |
983 | } | |
984 | } | |
07800601 | 985 | |
13cc5079 ACM |
986 | if (!syme->skip) |
987 | syme->name_len = strlen(sym->name); | |
988 | ||
07800601 IM |
989 | return 0; |
990 | } | |
991 | ||
b3165f41 | 992 | static void event__process_sample(const event_t *self, |
9c90a61c | 993 | struct sample_data *sample, |
69aad6f1 ACM |
994 | struct perf_session *session, |
995 | struct perf_evsel *evsel) | |
07800601 | 996 | { |
5b2bb75a | 997 | u64 ip = self->ip.ip; |
5b2bb75a | 998 | struct sym_entry *syme; |
1ed091c4 | 999 | struct addr_location al; |
23346f21 | 1000 | struct machine *machine; |
8ffcda17 | 1001 | u8 origin = self->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; |
5b2bb75a | 1002 | |
24bfef0f ACM |
1003 | ++samples; |
1004 | ||
8ffcda17 | 1005 | switch (origin) { |
1ed091c4 | 1006 | case PERF_RECORD_MISC_USER: |
a1645ce1 | 1007 | ++us_samples; |
8ffcda17 ACM |
1008 | if (hide_user_symbols) |
1009 | return; | |
23346f21 | 1010 | machine = perf_session__find_host_machine(session); |
1ed091c4 | 1011 | break; |
5b2bb75a | 1012 | case PERF_RECORD_MISC_KERNEL: |
a1645ce1 | 1013 | ++kernel_samples; |
8ffcda17 ACM |
1014 | if (hide_kernel_symbols) |
1015 | return; | |
23346f21 | 1016 | machine = perf_session__find_host_machine(session); |
a1645ce1 ZY |
1017 | break; |
1018 | case PERF_RECORD_MISC_GUEST_KERNEL: | |
1019 | ++guest_kernel_samples; | |
23346f21 | 1020 | machine = perf_session__find_machine(session, self->ip.pid); |
5b2bb75a | 1021 | break; |
a1645ce1 ZY |
1022 | case PERF_RECORD_MISC_GUEST_USER: |
1023 | ++guest_us_samples; | |
1024 | /* | |
1025 | * TODO: we don't process guest user from host side | |
1026 | * except simple counting. | |
1027 | */ | |
1028 | return; | |
5b2bb75a ACM |
1029 | default: |
1030 | return; | |
1031 | } | |
1032 | ||
23346f21 | 1033 | if (!machine && perf_guest) { |
a1645ce1 ZY |
1034 | pr_err("Can't find guest [%d]'s kernel information\n", |
1035 | self->ip.pid); | |
1036 | return; | |
1037 | } | |
1038 | ||
ab608344 | 1039 | if (self->header.misc & PERF_RECORD_MISC_EXACT_IP) |
1676b8a0 PZ |
1040 | exact_samples++; |
1041 | ||
9c90a61c | 1042 | if (event__preprocess_sample(self, session, &al, sample, |
41a37e20 | 1043 | symbol_filter) < 0 || |
72b8fa17 | 1044 | al.filtered) |
1ed091c4 | 1045 | return; |
07800601 | 1046 | |
72b8fa17 ACM |
1047 | if (al.sym == NULL) { |
1048 | /* | |
1049 | * As we do lazy loading of symtabs we only will know if the | |
1050 | * specified vmlinux file is invalid when we actually have a | |
1051 | * hit in kernel space and then try to load it. So if we get | |
1052 | * here and there are _no_ symbols in the DSO backing the | |
1053 | * kernel map, bail out. | |
1054 | * | |
1055 | * We may never get here, for instance, if we use -K/ | |
1056 | * --hide-kernel-symbols, even if the user specifies an | |
1057 | * invalid --vmlinux ;-) | |
1058 | */ | |
23346f21 | 1059 | if (al.map == machine->vmlinux_maps[MAP__FUNCTION] && |
72b8fa17 ACM |
1060 | RB_EMPTY_ROOT(&al.map->dso->symbols[MAP__FUNCTION])) { |
1061 | pr_err("The %s file can't be used\n", | |
1062 | symbol_conf.vmlinux_name); | |
1063 | exit(1); | |
1064 | } | |
1065 | ||
1066 | return; | |
1067 | } | |
1068 | ||
6cff0e8d KS |
1069 | /* let's see, whether we need to install initial sym_filter_entry */ |
1070 | if (sym_filter_entry_sched) { | |
1071 | sym_filter_entry = sym_filter_entry_sched; | |
1072 | sym_filter_entry_sched = NULL; | |
b0a9ab62 ACM |
1073 | if (parse_source(sym_filter_entry) < 0) { |
1074 | struct symbol *sym = sym_entry__symbol(sym_filter_entry); | |
1075 | ||
1076 | pr_err("Can't annotate %s", sym->name); | |
1077 | if (sym_filter_entry->map->dso->origin == DSO__ORIG_KERNEL) { | |
1078 | pr_err(": No vmlinux file was found in the path:\n"); | |
5ad90e4e | 1079 | machine__fprintf_vmlinux_path(machine, stderr); |
b0a9ab62 ACM |
1080 | } else |
1081 | pr_err(".\n"); | |
1082 | exit(1); | |
1083 | } | |
6cff0e8d KS |
1084 | } |
1085 | ||
1ed091c4 | 1086 | syme = symbol__priv(al.sym); |
5b2bb75a | 1087 | if (!syme->skip) { |
69aad6f1 | 1088 | syme->count[evsel->idx]++; |
8ffcda17 | 1089 | syme->origin = origin; |
69aad6f1 | 1090 | record_precise_ip(syme, evsel->idx, ip); |
5b2bb75a ACM |
1091 | pthread_mutex_lock(&active_symbols_lock); |
1092 | if (list_empty(&syme->node) || !syme->node.next) | |
1093 | __list_insert_active_sym(syme); | |
1094 | pthread_mutex_unlock(&active_symbols_lock); | |
5b2bb75a | 1095 | } |
07800601 IM |
1096 | } |
1097 | ||
07800601 | 1098 | struct mmap_data { |
a21ca2ca | 1099 | void *base; |
f37a291c | 1100 | int mask; |
a21ca2ca | 1101 | unsigned int prev; |
07800601 IM |
1102 | }; |
1103 | ||
69aad6f1 ACM |
1104 | static int perf_evsel__alloc_mmap_per_thread(struct perf_evsel *evsel, |
1105 | int ncpus, int nthreads) | |
1106 | { | |
1107 | evsel->priv = xyarray__new(ncpus, nthreads, sizeof(struct mmap_data)); | |
1108 | return evsel->priv != NULL ? 0 : -ENOMEM; | |
1109 | } | |
1110 | ||
1111 | static void perf_evsel__free_mmap(struct perf_evsel *evsel) | |
1112 | { | |
1113 | xyarray__delete(evsel->priv); | |
1114 | evsel->priv = NULL; | |
1115 | } | |
1116 | ||
07800601 IM |
1117 | static unsigned int mmap_read_head(struct mmap_data *md) |
1118 | { | |
cdd6c482 | 1119 | struct perf_event_mmap_page *pc = md->base; |
07800601 IM |
1120 | int head; |
1121 | ||
1122 | head = pc->data_head; | |
1123 | rmb(); | |
1124 | ||
1125 | return head; | |
1126 | } | |
1127 | ||
d8f66248 | 1128 | static void perf_session__mmap_read_counter(struct perf_session *self, |
69aad6f1 ACM |
1129 | struct perf_evsel *evsel, |
1130 | int cpu, int thread_idx) | |
07800601 | 1131 | { |
69aad6f1 ACM |
1132 | struct xyarray *mmap_array = evsel->priv; |
1133 | struct mmap_data *md = xyarray__entry(mmap_array, cpu, thread_idx); | |
07800601 IM |
1134 | unsigned int head = mmap_read_head(md); |
1135 | unsigned int old = md->prev; | |
1136 | unsigned char *data = md->base + page_size; | |
9c90a61c | 1137 | struct sample_data sample; |
07800601 IM |
1138 | int diff; |
1139 | ||
07800601 IM |
1140 | /* |
1141 | * If we're further behind than half the buffer, there's a chance | |
2debbc83 | 1142 | * the writer will bite our tail and mess up the samples under us. |
07800601 IM |
1143 | * |
1144 | * If we somehow ended up ahead of the head, we got messed up. | |
1145 | * | |
1146 | * In either case, truncate and restart at head. | |
1147 | */ | |
1148 | diff = head - old; | |
1149 | if (diff > md->mask / 2 || diff < 0) { | |
f4f0b418 | 1150 | fprintf(stderr, "WARNING: failed to keep up with mmap data.\n"); |
07800601 IM |
1151 | |
1152 | /* | |
1153 | * head points to a known good entry, start there. | |
1154 | */ | |
1155 | old = head; | |
1156 | } | |
1157 | ||
07800601 | 1158 | for (; old != head;) { |
07800601 IM |
1159 | event_t *event = (event_t *)&data[old & md->mask]; |
1160 | ||
1161 | event_t event_copy; | |
1162 | ||
6f06ccbc | 1163 | size_t size = event->header.size; |
07800601 IM |
1164 | |
1165 | /* | |
1166 | * Event straddles the mmap boundary -- header should always | |
1167 | * be inside due to u64 alignment of output. | |
1168 | */ | |
1169 | if ((old & md->mask) + size != ((old + size) & md->mask)) { | |
1170 | unsigned int offset = old; | |
1171 | unsigned int len = min(sizeof(*event), size), cpy; | |
1172 | void *dst = &event_copy; | |
1173 | ||
1174 | do { | |
1175 | cpy = min(md->mask + 1 - (offset & md->mask), len); | |
1176 | memcpy(dst, &data[offset & md->mask], cpy); | |
1177 | offset += cpy; | |
1178 | dst += cpy; | |
1179 | len -= cpy; | |
1180 | } while (len); | |
1181 | ||
1182 | event = &event_copy; | |
1183 | } | |
1184 | ||
9c90a61c | 1185 | event__parse_sample(event, self, &sample); |
5b2bb75a | 1186 | if (event->header.type == PERF_RECORD_SAMPLE) |
69aad6f1 | 1187 | event__process_sample(event, &sample, self, evsel); |
5b2bb75a | 1188 | else |
9c90a61c | 1189 | event__process(event, &sample, self); |
07800601 | 1190 | old += size; |
07800601 IM |
1191 | } |
1192 | ||
1193 | md->prev = old; | |
1194 | } | |
1195 | ||
d6d901c2 | 1196 | static struct pollfd *event_array; |
c2990a2a | 1197 | |
d8f66248 | 1198 | static void perf_session__mmap_read(struct perf_session *self) |
2f01190a | 1199 | { |
69aad6f1 ACM |
1200 | struct perf_evsel *counter; |
1201 | int i, thread_index; | |
2f01190a | 1202 | |
60d567e2 | 1203 | for (i = 0; i < cpus->nr; i++) { |
361c99a6 | 1204 | list_for_each_entry(counter, &evsel_list->entries, node) { |
d6d901c2 | 1205 | for (thread_index = 0; |
5c98d466 | 1206 | thread_index < threads->nr; |
d6d901c2 ZY |
1207 | thread_index++) { |
1208 | perf_session__mmap_read_counter(self, | |
69aad6f1 | 1209 | counter, i, thread_index); |
d6d901c2 | 1210 | } |
69aad6f1 | 1211 | } |
2f01190a FW |
1212 | } |
1213 | } | |
1214 | ||
716c69fe IM |
1215 | int nr_poll; |
1216 | int group_fd; | |
1217 | ||
69aad6f1 | 1218 | static void start_counter(int i, struct perf_evsel *evsel) |
07800601 | 1219 | { |
69aad6f1 ACM |
1220 | struct xyarray *mmap_array = evsel->priv; |
1221 | struct mmap_data *mm; | |
cdd6c482 | 1222 | struct perf_event_attr *attr; |
01797c59 | 1223 | int cpu = -1; |
d6d901c2 | 1224 | int thread_index; |
716c69fe | 1225 | |
01797c59 | 1226 | if (target_tid == -1) |
60d567e2 | 1227 | cpu = cpus->map[i]; |
716c69fe | 1228 | |
69aad6f1 | 1229 | attr = &evsel->attr; |
716c69fe IM |
1230 | |
1231 | attr->sample_type = PERF_SAMPLE_IP | PERF_SAMPLE_TID; | |
7e4ff9e3 MG |
1232 | |
1233 | if (freq) { | |
1234 | attr->sample_type |= PERF_SAMPLE_PERIOD; | |
1235 | attr->freq = 1; | |
1236 | attr->sample_freq = freq; | |
1237 | } | |
1238 | ||
0fdc7e67 | 1239 | attr->inherit = (cpu < 0) && inherit; |
5b2bb75a | 1240 | attr->mmap = 1; |
716c69fe | 1241 | |
5c98d466 | 1242 | for (thread_index = 0; thread_index < threads->nr; thread_index++) { |
716c69fe | 1243 | try_again: |
69aad6f1 | 1244 | FD(evsel, i, thread_index) = sys_perf_event_open(attr, |
5c98d466 | 1245 | threads->map[thread_index], cpu, group_fd, 0); |
d6d901c2 | 1246 | |
69aad6f1 | 1247 | if (FD(evsel, i, thread_index) < 0) { |
d6d901c2 ZY |
1248 | int err = errno; |
1249 | ||
1250 | if (err == EPERM || err == EACCES) | |
d9cf837e CA |
1251 | die("Permission error - are you root?\n" |
1252 | "\t Consider tweaking" | |
1253 | " /proc/sys/kernel/perf_event_paranoid.\n"); | |
d6d901c2 ZY |
1254 | /* |
1255 | * If it's cycles then fall back to hrtimer | |
1256 | * based cpu-clock-tick sw counter, which | |
1257 | * is always available even if no PMU support: | |
1258 | */ | |
1259 | if (attr->type == PERF_TYPE_HARDWARE | |
1260 | && attr->config == PERF_COUNT_HW_CPU_CYCLES) { | |
1261 | ||
1262 | if (verbose) | |
1263 | warning(" ... trying to fall back to cpu-clock-ticks\n"); | |
1264 | ||
1265 | attr->type = PERF_TYPE_SOFTWARE; | |
1266 | attr->config = PERF_COUNT_SW_CPU_CLOCK; | |
1267 | goto try_again; | |
1268 | } | |
1269 | printf("\n"); | |
d9cf837e | 1270 | error("sys_perf_event_open() syscall returned with %d (%s). /bin/dmesg may provide additional information.\n", |
69aad6f1 | 1271 | FD(evsel, i, thread_index), strerror(err)); |
d6d901c2 ZY |
1272 | die("No CONFIG_PERF_EVENTS=y kernel support configured?\n"); |
1273 | exit(-1); | |
1274 | } | |
69aad6f1 ACM |
1275 | assert(FD(evsel, i, thread_index) >= 0); |
1276 | fcntl(FD(evsel, i, thread_index), F_SETFL, O_NONBLOCK); | |
716c69fe | 1277 | |
716c69fe | 1278 | /* |
d6d901c2 | 1279 | * First counter acts as the group leader: |
716c69fe | 1280 | */ |
d6d901c2 | 1281 | if (group && group_fd == -1) |
69aad6f1 | 1282 | group_fd = FD(evsel, i, thread_index); |
d6d901c2 | 1283 | |
69aad6f1 | 1284 | event_array[nr_poll].fd = FD(evsel, i, thread_index); |
d6d901c2 ZY |
1285 | event_array[nr_poll].events = POLLIN; |
1286 | nr_poll++; | |
1287 | ||
69aad6f1 ACM |
1288 | mm = xyarray__entry(mmap_array, i, thread_index); |
1289 | mm->prev = 0; | |
1290 | mm->mask = mmap_pages*page_size - 1; | |
1291 | mm->base = mmap(NULL, (mmap_pages+1)*page_size, | |
1292 | PROT_READ, MAP_SHARED, FD(evsel, i, thread_index), 0); | |
1293 | if (mm->base == MAP_FAILED) | |
d6d901c2 | 1294 | die("failed to mmap with %d (%s)\n", errno, strerror(errno)); |
716c69fe | 1295 | } |
716c69fe IM |
1296 | } |
1297 | ||
1298 | static int __cmd_top(void) | |
1299 | { | |
1300 | pthread_t thread; | |
69aad6f1 ACM |
1301 | struct perf_evsel *counter; |
1302 | int i, ret; | |
d8f66248 | 1303 | /* |
b3165f41 ACM |
1304 | * FIXME: perf_session__new should allow passing a O_MMAP, so that all this |
1305 | * mmap reading, etc is encapsulated in it. Use O_WRONLY for now. | |
d8f66248 | 1306 | */ |
21ef97f0 | 1307 | struct perf_session *session = perf_session__new(NULL, O_WRONLY, false, false, NULL); |
b3165f41 ACM |
1308 | if (session == NULL) |
1309 | return -ENOMEM; | |
07800601 | 1310 | |
d6d901c2 ZY |
1311 | if (target_tid != -1) |
1312 | event__synthesize_thread(target_tid, event__process, session); | |
5b2bb75a | 1313 | else |
d8f66248 | 1314 | event__synthesize_threads(event__process, session); |
5b2bb75a | 1315 | |
60d567e2 | 1316 | for (i = 0; i < cpus->nr; i++) { |
07800601 | 1317 | group_fd = -1; |
361c99a6 | 1318 | list_for_each_entry(counter, &evsel_list->entries, node) |
716c69fe | 1319 | start_counter(i, counter); |
07800601 IM |
1320 | } |
1321 | ||
2f01190a | 1322 | /* Wait for a minimal set of events before starting the snapshot */ |
d6d901c2 | 1323 | poll(&event_array[0], nr_poll, 100); |
2f01190a | 1324 | |
d8f66248 | 1325 | perf_session__mmap_read(session); |
2f01190a | 1326 | |
a1645ce1 | 1327 | if (pthread_create(&thread, NULL, display_thread, session)) { |
07800601 IM |
1328 | printf("Could not create display thread.\n"); |
1329 | exit(-1); | |
1330 | } | |
1331 | ||
1332 | if (realtime_prio) { | |
1333 | struct sched_param param; | |
1334 | ||
1335 | param.sched_priority = realtime_prio; | |
1336 | if (sched_setscheduler(0, SCHED_FIFO, ¶m)) { | |
1337 | printf("Could not set realtime priority.\n"); | |
1338 | exit(-1); | |
1339 | } | |
1340 | } | |
1341 | ||
1342 | while (1) { | |
2debbc83 | 1343 | int hits = samples; |
07800601 | 1344 | |
d8f66248 | 1345 | perf_session__mmap_read(session); |
07800601 | 1346 | |
2debbc83 | 1347 | if (hits == samples) |
07800601 IM |
1348 | ret = poll(event_array, nr_poll, 100); |
1349 | } | |
1350 | ||
1351 | return 0; | |
1352 | } | |
b456bae0 IM |
1353 | |
1354 | static const char * const top_usage[] = { | |
1355 | "perf top [<options>]", | |
1356 | NULL | |
1357 | }; | |
1358 | ||
b456bae0 | 1359 | static const struct option options[] = { |
361c99a6 | 1360 | OPT_CALLBACK('e', "event", &evsel_list, "event", |
86847b62 TG |
1361 | "event selector. use 'perf list' to list available events", |
1362 | parse_events), | |
b456bae0 IM |
1363 | OPT_INTEGER('c', "count", &default_interval, |
1364 | "event period to sample"), | |
1365 | OPT_INTEGER('p', "pid", &target_pid, | |
d6d901c2 ZY |
1366 | "profile events on existing process id"), |
1367 | OPT_INTEGER('t', "tid", &target_tid, | |
1368 | "profile events on existing thread id"), | |
b456bae0 IM |
1369 | OPT_BOOLEAN('a', "all-cpus", &system_wide, |
1370 | "system-wide collection from all CPUs"), | |
c45c6ea2 SE |
1371 | OPT_STRING('C', "cpu", &cpu_list, "cpu", |
1372 | "list of cpus to monitor"), | |
b32d133a ACM |
1373 | OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name, |
1374 | "file", "vmlinux pathname"), | |
8ffcda17 ACM |
1375 | OPT_BOOLEAN('K', "hide_kernel_symbols", &hide_kernel_symbols, |
1376 | "hide kernel symbols"), | |
1967936d | 1377 | OPT_UINTEGER('m', "mmap-pages", &mmap_pages, "number of mmap data pages"), |
b456bae0 IM |
1378 | OPT_INTEGER('r', "realtime", &realtime_prio, |
1379 | "collect data with this RT SCHED_FIFO priority"), | |
db20c003 | 1380 | OPT_INTEGER('d', "delay", &delay_secs, |
b456bae0 IM |
1381 | "number of seconds to delay between refreshes"), |
1382 | OPT_BOOLEAN('D', "dump-symtab", &dump_symtab, | |
1383 | "dump the symbol table used for profiling"), | |
6e53cdf1 | 1384 | OPT_INTEGER('f', "count-filter", &count_filter, |
b456bae0 IM |
1385 | "only display functions with more events than this"), |
1386 | OPT_BOOLEAN('g', "group", &group, | |
1387 | "put the counters into a counter group"), | |
0fdc7e67 MG |
1388 | OPT_BOOLEAN('i', "inherit", &inherit, |
1389 | "child tasks inherit counters"), | |
923c42c1 | 1390 | OPT_STRING('s', "sym-annotate", &sym_filter, "symbol name", |
6cff0e8d | 1391 | "symbol to annotate"), |
1f208ea6 | 1392 | OPT_BOOLEAN('z', "zero", &zero, |
b456bae0 | 1393 | "zero history across updates"), |
6e53cdf1 | 1394 | OPT_INTEGER('F', "freq", &freq, |
b456bae0 | 1395 | "profile at this frequency"), |
6e53cdf1 IM |
1396 | OPT_INTEGER('E', "entries", &print_entries, |
1397 | "display this many functions"), | |
8ffcda17 ACM |
1398 | OPT_BOOLEAN('U', "hide_user_symbols", &hide_user_symbols, |
1399 | "hide user symbols"), | |
c0555642 | 1400 | OPT_INCR('v', "verbose", &verbose, |
3da297a6 | 1401 | "be more verbose (show counter open errors, etc)"), |
b456bae0 IM |
1402 | OPT_END() |
1403 | }; | |
1404 | ||
f37a291c | 1405 | int cmd_top(int argc, const char **argv, const char *prefix __used) |
b456bae0 | 1406 | { |
69aad6f1 ACM |
1407 | struct perf_evsel *pos; |
1408 | int status = -ENOMEM; | |
b456bae0 | 1409 | |
361c99a6 ACM |
1410 | evsel_list = perf_evlist__new(); |
1411 | if (evsel_list == NULL) | |
1412 | return -ENOMEM; | |
1413 | ||
b456bae0 IM |
1414 | page_size = sysconf(_SC_PAGE_SIZE); |
1415 | ||
b456bae0 IM |
1416 | argc = parse_options(argc, argv, options, top_usage, 0); |
1417 | if (argc) | |
1418 | usage_with_options(top_usage, options); | |
1419 | ||
5c98d466 | 1420 | if (target_pid != -1) |
d6d901c2 | 1421 | target_tid = target_pid; |
d6d901c2 | 1422 | |
5c98d466 ACM |
1423 | threads = thread_map__new(target_pid, target_tid); |
1424 | if (threads == NULL) { | |
1425 | pr_err("Problems finding threads of monitor\n"); | |
1426 | usage_with_options(top_usage, options); | |
d6d901c2 ZY |
1427 | } |
1428 | ||
5c98d466 ACM |
1429 | event_array = malloc((sizeof(struct pollfd) * |
1430 | MAX_NR_CPUS * MAX_COUNTERS * threads->nr)); | |
d6d901c2 ZY |
1431 | if (!event_array) |
1432 | return -ENOMEM; | |
1433 | ||
b456bae0 | 1434 | /* CPU and PID are mutually exclusive */ |
c45c6ea2 | 1435 | if (target_tid > 0 && cpu_list) { |
b456bae0 IM |
1436 | printf("WARNING: PID switch overriding CPU\n"); |
1437 | sleep(1); | |
c45c6ea2 | 1438 | cpu_list = NULL; |
b456bae0 IM |
1439 | } |
1440 | ||
361c99a6 ACM |
1441 | if (!evsel_list->nr_entries && |
1442 | perf_evlist__add_default(evsel_list) < 0) { | |
69aad6f1 ACM |
1443 | pr_err("Not enough memory for event selector list\n"); |
1444 | return -ENOMEM; | |
1445 | } | |
5a8e5a30 | 1446 | |
2f335a02 FW |
1447 | if (delay_secs < 1) |
1448 | delay_secs = 1; | |
1449 | ||
7e4ff9e3 MG |
1450 | /* |
1451 | * User specified count overrides default frequency. | |
1452 | */ | |
1453 | if (default_interval) | |
1454 | freq = 0; | |
1455 | else if (freq) { | |
1456 | default_interval = freq; | |
1457 | } else { | |
1458 | fprintf(stderr, "frequency and count are zero, aborting\n"); | |
1459 | exit(EXIT_FAILURE); | |
1460 | } | |
1461 | ||
c45c6ea2 | 1462 | if (target_tid != -1) |
60d567e2 | 1463 | cpus = cpu_map__dummy_new(); |
a12b51c4 | 1464 | else |
60d567e2 | 1465 | cpus = cpu_map__new(cpu_list); |
c45c6ea2 | 1466 | |
60d567e2 | 1467 | if (cpus == NULL) |
c45c6ea2 | 1468 | usage_with_options(top_usage, options); |
b456bae0 | 1469 | |
361c99a6 | 1470 | list_for_each_entry(pos, &evsel_list->entries, node) { |
5c98d466 ACM |
1471 | if (perf_evsel__alloc_mmap_per_thread(pos, cpus->nr, threads->nr) < 0 || |
1472 | perf_evsel__alloc_fd(pos, cpus->nr, threads->nr) < 0) | |
69aad6f1 ACM |
1473 | goto out_free_fd; |
1474 | /* | |
1475 | * Fill in the ones not specifically initialized via -c: | |
1476 | */ | |
1477 | if (pos->attr.sample_period) | |
1478 | continue; | |
1479 | ||
1480 | pos->attr.sample_period = default_interval; | |
1481 | } | |
1482 | ||
361c99a6 | 1483 | sym_evsel = list_entry(evsel_list->entries.next, struct perf_evsel, node); |
cc841580 | 1484 | |
69aad6f1 | 1485 | symbol_conf.priv_size = (sizeof(struct sym_entry) + |
361c99a6 | 1486 | (evsel_list->nr_entries + 1) * sizeof(unsigned long)); |
69aad6f1 ACM |
1487 | |
1488 | symbol_conf.try_vmlinux_path = (symbol_conf.vmlinux_name == NULL); | |
1489 | if (symbol__init() < 0) | |
1490 | return -1; | |
1491 | ||
13cc5079 | 1492 | get_term_dimensions(&winsize); |
3b6ed988 | 1493 | if (print_entries == 0) { |
13cc5079 | 1494 | update_print_entries(&winsize); |
3b6ed988 ACM |
1495 | signal(SIGWINCH, sig_winch_handler); |
1496 | } | |
1497 | ||
69aad6f1 ACM |
1498 | status = __cmd_top(); |
1499 | out_free_fd: | |
361c99a6 | 1500 | list_for_each_entry(pos, &evsel_list->entries, node) |
69aad6f1 | 1501 | perf_evsel__free_mmap(pos); |
361c99a6 | 1502 | perf_evlist__delete(evsel_list); |
69aad6f1 ACM |
1503 | |
1504 | return status; | |
b456bae0 | 1505 | } |