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> | |
ab81f3fd | 8 | * 2011, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com> |
bf9e1876 IM |
9 | * |
10 | * Improvements and fixes by: | |
11 | * | |
12 | * Arjan van de Ven <arjan@linux.intel.com> | |
13 | * Yanmin Zhang <yanmin.zhang@intel.com> | |
14 | * Wu Fengguang <fengguang.wu@intel.com> | |
15 | * Mike Galbraith <efault@gmx.de> | |
16 | * Paul Mackerras <paulus@samba.org> | |
17 | * | |
18 | * Released under the GPL v2. (and only v2, not any later version) | |
07800601 | 19 | */ |
bf9e1876 | 20 | #include "builtin.h" |
07800601 | 21 | |
1a482f38 | 22 | #include "perf.h" |
bf9e1876 | 23 | |
36532461 | 24 | #include "util/annotate.h" |
c0443df1 | 25 | #include "util/cache.h" |
8fc0321f | 26 | #include "util/color.h" |
361c99a6 | 27 | #include "util/evlist.h" |
69aad6f1 | 28 | #include "util/evsel.h" |
b3165f41 ACM |
29 | #include "util/session.h" |
30 | #include "util/symbol.h" | |
439d473b | 31 | #include "util/thread.h" |
fd78260b | 32 | #include "util/thread_map.h" |
8c3e10eb | 33 | #include "util/top.h" |
148be2c1 | 34 | #include "util/util.h" |
43cbcd8a | 35 | #include <linux/rbtree.h> |
b456bae0 IM |
36 | #include "util/parse-options.h" |
37 | #include "util/parse-events.h" | |
a12b51c4 | 38 | #include "util/cpumap.h" |
69aad6f1 | 39 | #include "util/xyarray.h" |
ab81f3fd | 40 | #include "util/sort.h" |
07800601 | 41 | |
8f28827a FW |
42 | #include "util/debug.h" |
43 | ||
07800601 IM |
44 | #include <assert.h> |
45 | #include <fcntl.h> | |
0e9b20b8 | 46 | |
07800601 | 47 | #include <stdio.h> |
923c42c1 MG |
48 | #include <termios.h> |
49 | #include <unistd.h> | |
9486aa38 | 50 | #include <inttypes.h> |
0e9b20b8 | 51 | |
07800601 | 52 | #include <errno.h> |
07800601 IM |
53 | #include <time.h> |
54 | #include <sched.h> | |
07800601 IM |
55 | |
56 | #include <sys/syscall.h> | |
57 | #include <sys/ioctl.h> | |
58 | #include <sys/poll.h> | |
59 | #include <sys/prctl.h> | |
60 | #include <sys/wait.h> | |
61 | #include <sys/uio.h> | |
62 | #include <sys/mman.h> | |
63 | ||
64 | #include <linux/unistd.h> | |
65 | #include <linux/types.h> | |
66 | ||
895f0edc | 67 | void get_term_dimensions(struct winsize *ws) |
3b6ed988 | 68 | { |
13cc5079 ACM |
69 | char *s = getenv("LINES"); |
70 | ||
71 | if (s != NULL) { | |
72 | ws->ws_row = atoi(s); | |
73 | s = getenv("COLUMNS"); | |
74 | if (s != NULL) { | |
75 | ws->ws_col = atoi(s); | |
76 | if (ws->ws_row && ws->ws_col) | |
77 | return; | |
78 | } | |
3b6ed988 | 79 | } |
13cc5079 ACM |
80 | #ifdef TIOCGWINSZ |
81 | if (ioctl(1, TIOCGWINSZ, ws) == 0 && | |
82 | ws->ws_row && ws->ws_col) | |
83 | return; | |
3b6ed988 | 84 | #endif |
13cc5079 ACM |
85 | ws->ws_row = 25; |
86 | ws->ws_col = 80; | |
3b6ed988 ACM |
87 | } |
88 | ||
1758af10 | 89 | static void perf_top__update_print_entries(struct perf_top *top) |
3b6ed988 | 90 | { |
1758af10 ACM |
91 | if (top->print_entries > 9) |
92 | top->print_entries -= 9; | |
3b6ed988 ACM |
93 | } |
94 | ||
1758af10 | 95 | static void perf_top__sig_winch(int sig __used, siginfo_t *info __used, void *arg) |
3b6ed988 | 96 | { |
1758af10 ACM |
97 | struct perf_top *top = arg; |
98 | ||
99 | get_term_dimensions(&top->winsize); | |
509605db SE |
100 | if (!top->print_entries |
101 | || (top->print_entries+4) > top->winsize.ws_row) { | |
102 | top->print_entries = top->winsize.ws_row; | |
103 | } else { | |
104 | top->print_entries += 4; | |
105 | top->winsize.ws_row = top->print_entries; | |
106 | } | |
1758af10 | 107 | perf_top__update_print_entries(top); |
3b6ed988 ACM |
108 | } |
109 | ||
1758af10 | 110 | static int perf_top__parse_source(struct perf_top *top, struct hist_entry *he) |
923c42c1 MG |
111 | { |
112 | struct symbol *sym; | |
ce6f4fab | 113 | struct annotation *notes; |
439d473b | 114 | struct map *map; |
36532461 | 115 | int err = -1; |
923c42c1 | 116 | |
ab81f3fd | 117 | if (!he || !he->ms.sym) |
b0a9ab62 ACM |
118 | return -1; |
119 | ||
ab81f3fd ACM |
120 | sym = he->ms.sym; |
121 | map = he->ms.map; | |
b0a9ab62 ACM |
122 | |
123 | /* | |
124 | * We can't annotate with just /proc/kallsyms | |
125 | */ | |
878b439d | 126 | if (map->dso->symtab_type == SYMTAB__KALLSYMS) { |
ce6f4fab ACM |
127 | pr_err("Can't annotate %s: No vmlinux file was found in the " |
128 | "path\n", sym->name); | |
129 | sleep(1); | |
b0a9ab62 | 130 | return -1; |
b269876c ACM |
131 | } |
132 | ||
ce6f4fab ACM |
133 | notes = symbol__annotation(sym); |
134 | if (notes->src != NULL) { | |
135 | pthread_mutex_lock(¬es->lock); | |
923c42c1 MG |
136 | goto out_assign; |
137 | } | |
923c42c1 | 138 | |
ce6f4fab | 139 | pthread_mutex_lock(¬es->lock); |
923c42c1 | 140 | |
d04b35f8 | 141 | if (symbol__alloc_hist(sym) < 0) { |
c97cf422 | 142 | pthread_mutex_unlock(¬es->lock); |
36532461 ACM |
143 | pr_err("Not enough memory for annotating '%s' symbol!\n", |
144 | sym->name); | |
ce6f4fab | 145 | sleep(1); |
c97cf422 | 146 | return err; |
923c42c1 | 147 | } |
36532461 | 148 | |
ab81f3fd | 149 | err = symbol__annotate(sym, map, 0); |
36532461 | 150 | if (err == 0) { |
923c42c1 | 151 | out_assign: |
1758af10 | 152 | top->sym_filter_entry = he; |
36532461 | 153 | } |
c97cf422 | 154 | |
ce6f4fab | 155 | pthread_mutex_unlock(¬es->lock); |
36532461 | 156 | return err; |
923c42c1 MG |
157 | } |
158 | ||
ab81f3fd | 159 | static void __zero_source_counters(struct hist_entry *he) |
923c42c1 | 160 | { |
ab81f3fd | 161 | struct symbol *sym = he->ms.sym; |
36532461 | 162 | symbol__annotate_zero_histograms(sym); |
923c42c1 MG |
163 | } |
164 | ||
1758af10 ACM |
165 | static void perf_top__record_precise_ip(struct perf_top *top, |
166 | struct hist_entry *he, | |
167 | int counter, u64 ip) | |
923c42c1 | 168 | { |
ce6f4fab ACM |
169 | struct annotation *notes; |
170 | struct symbol *sym; | |
171 | ||
ab81f3fd | 172 | if (he == NULL || he->ms.sym == NULL || |
1758af10 ACM |
173 | ((top->sym_filter_entry == NULL || |
174 | top->sym_filter_entry->ms.sym != he->ms.sym) && use_browser != 1)) | |
923c42c1 MG |
175 | return; |
176 | ||
ab81f3fd | 177 | sym = he->ms.sym; |
ce6f4fab ACM |
178 | notes = symbol__annotation(sym); |
179 | ||
180 | if (pthread_mutex_trylock(¬es->lock)) | |
923c42c1 MG |
181 | return; |
182 | ||
d04b35f8 | 183 | if (notes->src == NULL && symbol__alloc_hist(sym) < 0) { |
ab81f3fd ACM |
184 | pthread_mutex_unlock(¬es->lock); |
185 | pr_err("Not enough memory for annotating '%s' symbol!\n", | |
186 | sym->name); | |
187 | sleep(1); | |
188 | return; | |
189 | } | |
190 | ||
191 | ip = he->ms.map->map_ip(he->ms.map, ip); | |
192 | symbol__inc_addr_samples(sym, he->ms.map, counter, ip); | |
c7ad21af | 193 | |
ce6f4fab | 194 | pthread_mutex_unlock(¬es->lock); |
923c42c1 MG |
195 | } |
196 | ||
1758af10 | 197 | static void perf_top__show_details(struct perf_top *top) |
923c42c1 | 198 | { |
1758af10 | 199 | struct hist_entry *he = top->sym_filter_entry; |
ce6f4fab | 200 | struct annotation *notes; |
923c42c1 | 201 | struct symbol *symbol; |
36532461 | 202 | int more; |
923c42c1 | 203 | |
ab81f3fd | 204 | if (!he) |
923c42c1 MG |
205 | return; |
206 | ||
ab81f3fd | 207 | symbol = he->ms.sym; |
ce6f4fab ACM |
208 | notes = symbol__annotation(symbol); |
209 | ||
210 | pthread_mutex_lock(¬es->lock); | |
211 | ||
212 | if (notes->src == NULL) | |
213 | goto out_unlock; | |
923c42c1 | 214 | |
1758af10 ACM |
215 | printf("Showing %s for %s\n", event_name(top->sym_evsel), symbol->name); |
216 | printf(" Events Pcnt (>=%d%%)\n", top->sym_pcnt_filter); | |
923c42c1 | 217 | |
1758af10 ACM |
218 | more = symbol__annotate_printf(symbol, he->ms.map, top->sym_evsel->idx, |
219 | 0, top->sym_pcnt_filter, top->print_entries, 4); | |
220 | if (top->zero) | |
221 | symbol__annotate_zero_histogram(symbol, top->sym_evsel->idx); | |
36532461 | 222 | else |
1758af10 | 223 | symbol__annotate_decay_histogram(symbol, top->sym_evsel->idx); |
36532461 | 224 | if (more != 0) |
923c42c1 | 225 | printf("%d lines not displayed, maybe increase display entries [e]\n", more); |
ce6f4fab ACM |
226 | out_unlock: |
227 | pthread_mutex_unlock(¬es->lock); | |
923c42c1 | 228 | } |
07800601 | 229 | |
07800601 IM |
230 | static const char CONSOLE_CLEAR[] = "\e[H\e[2J"; |
231 | ||
743eb868 ACM |
232 | static struct hist_entry *perf_evsel__add_hist_entry(struct perf_evsel *evsel, |
233 | struct addr_location *al, | |
234 | struct perf_sample *sample) | |
de04687f | 235 | { |
ab81f3fd ACM |
236 | struct hist_entry *he; |
237 | ||
238 | he = __hists__add_entry(&evsel->hists, al, NULL, sample->period); | |
239 | if (he == NULL) | |
240 | return NULL; | |
241 | ||
ab81f3fd ACM |
242 | hists__inc_nr_events(&evsel->hists, PERF_RECORD_SAMPLE); |
243 | return he; | |
de04687f | 244 | } |
07800601 | 245 | |
1758af10 | 246 | static void perf_top__print_sym_table(struct perf_top *top) |
07800601 | 247 | { |
8c3e10eb ACM |
248 | char bf[160]; |
249 | int printed = 0; | |
1758af10 | 250 | const int win_width = top->winsize.ws_col - 1; |
d94b9430 | 251 | |
0f5486b5 | 252 | puts(CONSOLE_CLEAR); |
07800601 | 253 | |
1758af10 | 254 | perf_top__header_snprintf(top, bf, sizeof(bf)); |
8c3e10eb | 255 | printf("%s\n", bf); |
07800601 | 256 | |
1758af10 | 257 | perf_top__reset_sample_counters(top); |
07800601 | 258 | |
1a105f74 | 259 | printf("%-*.*s\n", win_width, win_width, graph_dotted_line); |
07800601 | 260 | |
1758af10 ACM |
261 | if (top->sym_evsel->hists.stats.nr_lost_warned != |
262 | top->sym_evsel->hists.stats.nr_events[PERF_RECORD_LOST]) { | |
263 | top->sym_evsel->hists.stats.nr_lost_warned = | |
264 | top->sym_evsel->hists.stats.nr_events[PERF_RECORD_LOST]; | |
7b27509f ACM |
265 | color_fprintf(stdout, PERF_COLOR_RED, |
266 | "WARNING: LOST %d chunks, Check IO/CPU overload", | |
1758af10 | 267 | top->sym_evsel->hists.stats.nr_lost_warned); |
ab81f3fd | 268 | ++printed; |
93fc64f1 ACM |
269 | } |
270 | ||
1758af10 ACM |
271 | if (top->sym_filter_entry) { |
272 | perf_top__show_details(top); | |
923c42c1 MG |
273 | return; |
274 | } | |
275 | ||
1758af10 ACM |
276 | hists__collapse_resort_threaded(&top->sym_evsel->hists); |
277 | hists__output_resort_threaded(&top->sym_evsel->hists); | |
278 | hists__decay_entries_threaded(&top->sym_evsel->hists, | |
279 | top->hide_user_symbols, | |
280 | top->hide_kernel_symbols); | |
281 | hists__output_recalc_col_len(&top->sym_evsel->hists, | |
282 | top->winsize.ws_row - 3); | |
7cc017ed | 283 | putchar('\n'); |
1758af10 ACM |
284 | hists__fprintf(&top->sym_evsel->hists, NULL, false, false, |
285 | top->winsize.ws_row - 4 - printed, win_width, stdout); | |
07800601 IM |
286 | } |
287 | ||
923c42c1 MG |
288 | static void prompt_integer(int *target, const char *msg) |
289 | { | |
290 | char *buf = malloc(0), *p; | |
291 | size_t dummy = 0; | |
292 | int tmp; | |
293 | ||
294 | fprintf(stdout, "\n%s: ", msg); | |
295 | if (getline(&buf, &dummy, stdin) < 0) | |
296 | return; | |
297 | ||
298 | p = strchr(buf, '\n'); | |
299 | if (p) | |
300 | *p = 0; | |
301 | ||
302 | p = buf; | |
303 | while(*p) { | |
304 | if (!isdigit(*p)) | |
305 | goto out_free; | |
306 | p++; | |
307 | } | |
308 | tmp = strtoul(buf, NULL, 10); | |
309 | *target = tmp; | |
310 | out_free: | |
311 | free(buf); | |
312 | } | |
313 | ||
314 | static void prompt_percent(int *target, const char *msg) | |
315 | { | |
316 | int tmp = 0; | |
317 | ||
318 | prompt_integer(&tmp, msg); | |
319 | if (tmp >= 0 && tmp <= 100) | |
320 | *target = tmp; | |
321 | } | |
322 | ||
1758af10 | 323 | static void perf_top__prompt_symbol(struct perf_top *top, const char *msg) |
923c42c1 MG |
324 | { |
325 | char *buf = malloc(0), *p; | |
1758af10 | 326 | struct hist_entry *syme = top->sym_filter_entry, *n, *found = NULL; |
ab81f3fd | 327 | struct rb_node *next; |
923c42c1 MG |
328 | size_t dummy = 0; |
329 | ||
330 | /* zero counters of active symbol */ | |
331 | if (syme) { | |
923c42c1 | 332 | __zero_source_counters(syme); |
1758af10 | 333 | top->sym_filter_entry = NULL; |
923c42c1 MG |
334 | } |
335 | ||
336 | fprintf(stdout, "\n%s: ", msg); | |
337 | if (getline(&buf, &dummy, stdin) < 0) | |
338 | goto out_free; | |
339 | ||
340 | p = strchr(buf, '\n'); | |
341 | if (p) | |
342 | *p = 0; | |
343 | ||
1758af10 | 344 | next = rb_first(&top->sym_evsel->hists.entries); |
ab81f3fd ACM |
345 | while (next) { |
346 | n = rb_entry(next, struct hist_entry, rb_node); | |
347 | if (n->ms.sym && !strcmp(buf, n->ms.sym->name)) { | |
348 | found = n; | |
923c42c1 MG |
349 | break; |
350 | } | |
ab81f3fd | 351 | next = rb_next(&n->rb_node); |
923c42c1 MG |
352 | } |
353 | ||
354 | if (!found) { | |
66aeb6d5 | 355 | fprintf(stderr, "Sorry, %s is not active.\n", buf); |
923c42c1 | 356 | sleep(1); |
923c42c1 | 357 | } else |
1758af10 | 358 | perf_top__parse_source(top, found); |
923c42c1 MG |
359 | |
360 | out_free: | |
361 | free(buf); | |
362 | } | |
363 | ||
1758af10 | 364 | static void perf_top__print_mapped_keys(struct perf_top *top) |
923c42c1 | 365 | { |
091bd2e9 MG |
366 | char *name = NULL; |
367 | ||
1758af10 ACM |
368 | if (top->sym_filter_entry) { |
369 | struct symbol *sym = top->sym_filter_entry->ms.sym; | |
091bd2e9 MG |
370 | name = sym->name; |
371 | } | |
372 | ||
373 | fprintf(stdout, "\nMapped keys:\n"); | |
1758af10 ACM |
374 | fprintf(stdout, "\t[d] display refresh delay. \t(%d)\n", top->delay_secs); |
375 | fprintf(stdout, "\t[e] display entries (lines). \t(%d)\n", top->print_entries); | |
091bd2e9 | 376 | |
1758af10 ACM |
377 | if (top->evlist->nr_entries > 1) |
378 | fprintf(stdout, "\t[E] active event counter. \t(%s)\n", event_name(top->sym_evsel)); | |
091bd2e9 | 379 | |
1758af10 | 380 | fprintf(stdout, "\t[f] profile display filter (count). \t(%d)\n", top->count_filter); |
091bd2e9 | 381 | |
1758af10 | 382 | fprintf(stdout, "\t[F] annotate display filter (percent). \t(%d%%)\n", top->sym_pcnt_filter); |
6cff0e8d KS |
383 | fprintf(stdout, "\t[s] annotate symbol. \t(%s)\n", name?: "NULL"); |
384 | fprintf(stdout, "\t[S] stop annotation.\n"); | |
091bd2e9 | 385 | |
8ffcda17 | 386 | fprintf(stdout, |
1a72cfa6 | 387 | "\t[K] hide kernel_symbols symbols. \t(%s)\n", |
1758af10 | 388 | top->hide_kernel_symbols ? "yes" : "no"); |
8ffcda17 ACM |
389 | fprintf(stdout, |
390 | "\t[U] hide user symbols. \t(%s)\n", | |
1758af10 ACM |
391 | top->hide_user_symbols ? "yes" : "no"); |
392 | fprintf(stdout, "\t[z] toggle sample zeroing. \t(%d)\n", top->zero ? 1 : 0); | |
091bd2e9 MG |
393 | fprintf(stdout, "\t[qQ] quit.\n"); |
394 | } | |
395 | ||
1758af10 | 396 | static int perf_top__key_mapped(struct perf_top *top, int c) |
091bd2e9 MG |
397 | { |
398 | switch (c) { | |
399 | case 'd': | |
400 | case 'e': | |
401 | case 'f': | |
402 | case 'z': | |
403 | case 'q': | |
404 | case 'Q': | |
8ffcda17 ACM |
405 | case 'K': |
406 | case 'U': | |
6cff0e8d KS |
407 | case 'F': |
408 | case 's': | |
409 | case 'S': | |
091bd2e9 MG |
410 | return 1; |
411 | case 'E': | |
1758af10 | 412 | return top->evlist->nr_entries > 1 ? 1 : 0; |
83a0944f IM |
413 | default: |
414 | break; | |
091bd2e9 MG |
415 | } |
416 | ||
417 | return 0; | |
923c42c1 MG |
418 | } |
419 | ||
1758af10 | 420 | static void perf_top__handle_keypress(struct perf_top *top, int c) |
923c42c1 | 421 | { |
1758af10 | 422 | if (!perf_top__key_mapped(top, c)) { |
091bd2e9 MG |
423 | struct pollfd stdin_poll = { .fd = 0, .events = POLLIN }; |
424 | struct termios tc, save; | |
425 | ||
1758af10 | 426 | perf_top__print_mapped_keys(top); |
091bd2e9 MG |
427 | fprintf(stdout, "\nEnter selection, or unmapped key to continue: "); |
428 | fflush(stdout); | |
429 | ||
430 | tcgetattr(0, &save); | |
431 | tc = save; | |
432 | tc.c_lflag &= ~(ICANON | ECHO); | |
433 | tc.c_cc[VMIN] = 0; | |
434 | tc.c_cc[VTIME] = 0; | |
435 | tcsetattr(0, TCSANOW, &tc); | |
436 | ||
437 | poll(&stdin_poll, 1, -1); | |
438 | c = getc(stdin); | |
439 | ||
440 | tcsetattr(0, TCSAFLUSH, &save); | |
1758af10 | 441 | if (!perf_top__key_mapped(top, c)) |
091bd2e9 MG |
442 | return; |
443 | } | |
444 | ||
923c42c1 MG |
445 | switch (c) { |
446 | case 'd': | |
1758af10 ACM |
447 | prompt_integer(&top->delay_secs, "Enter display delay"); |
448 | if (top->delay_secs < 1) | |
449 | top->delay_secs = 1; | |
923c42c1 MG |
450 | break; |
451 | case 'e': | |
1758af10 ACM |
452 | prompt_integer(&top->print_entries, "Enter display entries (lines)"); |
453 | if (top->print_entries == 0) { | |
454 | struct sigaction act = { | |
455 | .sa_sigaction = perf_top__sig_winch, | |
456 | .sa_flags = SA_SIGINFO, | |
457 | }; | |
458 | perf_top__sig_winch(SIGWINCH, NULL, top); | |
459 | sigaction(SIGWINCH, &act, NULL); | |
509605db SE |
460 | } else { |
461 | perf_top__sig_winch(SIGWINCH, NULL, top); | |
3b6ed988 | 462 | signal(SIGWINCH, SIG_DFL); |
509605db | 463 | } |
923c42c1 MG |
464 | break; |
465 | case 'E': | |
1758af10 | 466 | if (top->evlist->nr_entries > 1) { |
ce2d17ca AN |
467 | /* Select 0 as the default event: */ |
468 | int counter = 0; | |
469 | ||
923c42c1 | 470 | fprintf(stderr, "\nAvailable events:"); |
69aad6f1 | 471 | |
1758af10 ACM |
472 | list_for_each_entry(top->sym_evsel, &top->evlist->entries, node) |
473 | fprintf(stderr, "\n\t%d %s", top->sym_evsel->idx, event_name(top->sym_evsel)); | |
923c42c1 | 474 | |
ec52d976 | 475 | prompt_integer(&counter, "Enter details event counter"); |
923c42c1 | 476 | |
1758af10 ACM |
477 | if (counter >= top->evlist->nr_entries) { |
478 | top->sym_evsel = list_entry(top->evlist->entries.next, struct perf_evsel, node); | |
479 | fprintf(stderr, "Sorry, no such event, using %s.\n", event_name(top->sym_evsel)); | |
923c42c1 | 480 | sleep(1); |
69aad6f1 | 481 | break; |
923c42c1 | 482 | } |
1758af10 ACM |
483 | list_for_each_entry(top->sym_evsel, &top->evlist->entries, node) |
484 | if (top->sym_evsel->idx == counter) | |
69aad6f1 | 485 | break; |
ec52d976 | 486 | } else |
1758af10 | 487 | top->sym_evsel = list_entry(top->evlist->entries.next, struct perf_evsel, node); |
923c42c1 MG |
488 | break; |
489 | case 'f': | |
1758af10 | 490 | prompt_integer(&top->count_filter, "Enter display event count filter"); |
923c42c1 MG |
491 | break; |
492 | case 'F': | |
1758af10 ACM |
493 | prompt_percent(&top->sym_pcnt_filter, |
494 | "Enter details display event filter (percent)"); | |
923c42c1 | 495 | break; |
8ffcda17 | 496 | case 'K': |
1758af10 | 497 | top->hide_kernel_symbols = !top->hide_kernel_symbols; |
8ffcda17 | 498 | break; |
923c42c1 MG |
499 | case 'q': |
500 | case 'Q': | |
501 | printf("exiting.\n"); | |
1758af10 ACM |
502 | if (top->dump_symtab) |
503 | perf_session__fprintf_dsos(top->session, stderr); | |
923c42c1 MG |
504 | exit(0); |
505 | case 's': | |
1758af10 | 506 | perf_top__prompt_symbol(top, "Enter details symbol"); |
923c42c1 MG |
507 | break; |
508 | case 'S': | |
1758af10 | 509 | if (!top->sym_filter_entry) |
923c42c1 MG |
510 | break; |
511 | else { | |
1758af10 | 512 | struct hist_entry *syme = top->sym_filter_entry; |
923c42c1 | 513 | |
1758af10 | 514 | top->sym_filter_entry = NULL; |
923c42c1 | 515 | __zero_source_counters(syme); |
923c42c1 MG |
516 | } |
517 | break; | |
8ffcda17 | 518 | case 'U': |
1758af10 | 519 | top->hide_user_symbols = !top->hide_user_symbols; |
8ffcda17 | 520 | break; |
923c42c1 | 521 | case 'z': |
1758af10 | 522 | top->zero = !top->zero; |
923c42c1 | 523 | break; |
83a0944f IM |
524 | default: |
525 | break; | |
923c42c1 MG |
526 | } |
527 | } | |
528 | ||
ab81f3fd ACM |
529 | static void perf_top__sort_new_samples(void *arg) |
530 | { | |
531 | struct perf_top *t = arg; | |
532 | perf_top__reset_sample_counters(t); | |
533 | ||
534 | if (t->evlist->selected != NULL) | |
535 | t->sym_evsel = t->evlist->selected; | |
536 | ||
537 | hists__collapse_resort_threaded(&t->sym_evsel->hists); | |
538 | hists__output_resort_threaded(&t->sym_evsel->hists); | |
b079d4e9 | 539 | hists__decay_entries_threaded(&t->sym_evsel->hists, |
1758af10 ACM |
540 | t->hide_user_symbols, |
541 | t->hide_kernel_symbols); | |
ab81f3fd ACM |
542 | } |
543 | ||
1758af10 | 544 | static void *display_thread_tui(void *arg) |
c0443df1 | 545 | { |
0d37aa34 | 546 | struct perf_evsel *pos; |
1758af10 | 547 | struct perf_top *top = arg; |
ab81f3fd ACM |
548 | const char *help = "For a higher level overview, try: perf top --sort comm,dso"; |
549 | ||
1758af10 | 550 | perf_top__sort_new_samples(top); |
0d37aa34 ACM |
551 | |
552 | /* | |
553 | * Initialize the uid_filter_str, in the future the TUI will allow | |
554 | * Zooming in/out UIDs. For now juse use whatever the user passed | |
555 | * via --uid. | |
556 | */ | |
557 | list_for_each_entry(pos, &top->evlist->entries, node) | |
558 | pos->hists.uid_filter_str = top->uid_str; | |
559 | ||
1758af10 | 560 | perf_evlist__tui_browse_hists(top->evlist, help, |
ab81f3fd | 561 | perf_top__sort_new_samples, |
1758af10 | 562 | top, top->delay_secs); |
ab81f3fd | 563 | |
c0443df1 ACM |
564 | exit_browser(0); |
565 | exit(0); | |
566 | return NULL; | |
567 | } | |
568 | ||
1758af10 | 569 | static void *display_thread(void *arg) |
07800601 | 570 | { |
0f5486b5 | 571 | struct pollfd stdin_poll = { .fd = 0, .events = POLLIN }; |
923c42c1 | 572 | struct termios tc, save; |
1758af10 | 573 | struct perf_top *top = arg; |
923c42c1 MG |
574 | int delay_msecs, c; |
575 | ||
576 | tcgetattr(0, &save); | |
577 | tc = save; | |
578 | tc.c_lflag &= ~(ICANON | ECHO); | |
579 | tc.c_cc[VMIN] = 0; | |
580 | tc.c_cc[VTIME] = 0; | |
091bd2e9 | 581 | |
3af6e338 | 582 | pthread__unblock_sigwinch(); |
923c42c1 | 583 | repeat: |
1758af10 | 584 | delay_msecs = top->delay_secs * 1000; |
923c42c1 MG |
585 | tcsetattr(0, TCSANOW, &tc); |
586 | /* trash return*/ | |
587 | getc(stdin); | |
07800601 | 588 | |
3af6e338 | 589 | while (1) { |
1758af10 | 590 | perf_top__print_sym_table(top); |
3af6e338 ACM |
591 | /* |
592 | * Either timeout expired or we got an EINTR due to SIGWINCH, | |
593 | * refresh screen in both cases. | |
594 | */ | |
595 | switch (poll(&stdin_poll, 1, delay_msecs)) { | |
596 | case 0: | |
597 | continue; | |
598 | case -1: | |
599 | if (errno == EINTR) | |
600 | continue; | |
601 | /* Fall trhu */ | |
602 | default: | |
603 | goto process_hotkey; | |
604 | } | |
605 | } | |
606 | process_hotkey: | |
923c42c1 MG |
607 | c = getc(stdin); |
608 | tcsetattr(0, TCSAFLUSH, &save); | |
609 | ||
1758af10 | 610 | perf_top__handle_keypress(top, c); |
923c42c1 | 611 | goto repeat; |
07800601 IM |
612 | |
613 | return NULL; | |
614 | } | |
615 | ||
2ab52083 | 616 | /* Tag samples to be skipped. */ |
f37a291c | 617 | static const char *skip_symbols[] = { |
2ab52083 | 618 | "default_idle", |
b0e8572f | 619 | "native_safe_halt", |
2ab52083 AB |
620 | "cpu_idle", |
621 | "enter_idle", | |
622 | "exit_idle", | |
623 | "mwait_idle", | |
59b90056 | 624 | "mwait_idle_with_hints", |
8357275b | 625 | "poll_idle", |
3a3393ef AB |
626 | "ppc64_runlatch_off", |
627 | "pseries_dedicated_idle_sleep", | |
2ab52083 AB |
628 | NULL |
629 | }; | |
630 | ||
ab81f3fd | 631 | static int symbol_filter(struct map *map __used, struct symbol *sym) |
07800601 | 632 | { |
de04687f | 633 | const char *name = sym->name; |
2ab52083 | 634 | int i; |
de04687f | 635 | |
3a3393ef AB |
636 | /* |
637 | * ppc64 uses function descriptors and appends a '.' to the | |
638 | * start of every instruction address. Remove it. | |
639 | */ | |
640 | if (name[0] == '.') | |
641 | name++; | |
642 | ||
de04687f ACM |
643 | if (!strcmp(name, "_text") || |
644 | !strcmp(name, "_etext") || | |
645 | !strcmp(name, "_sinittext") || | |
646 | !strncmp("init_module", name, 11) || | |
647 | !strncmp("cleanup_module", name, 14) || | |
648 | strstr(name, "_text_start") || | |
649 | strstr(name, "_text_end")) | |
07800601 | 650 | return 1; |
07800601 | 651 | |
2ab52083 AB |
652 | for (i = 0; skip_symbols[i]; i++) { |
653 | if (!strcmp(skip_symbols[i], name)) { | |
171b3be9 | 654 | sym->ignore = true; |
2ab52083 AB |
655 | break; |
656 | } | |
657 | } | |
07800601 | 658 | |
07800601 IM |
659 | return 0; |
660 | } | |
661 | ||
1758af10 ACM |
662 | static void perf_event__process_sample(struct perf_tool *tool, |
663 | const union perf_event *event, | |
7b27509f | 664 | struct perf_evsel *evsel, |
8115d60c | 665 | struct perf_sample *sample, |
743eb868 | 666 | struct machine *machine) |
07800601 | 667 | { |
1758af10 | 668 | struct perf_top *top = container_of(tool, struct perf_top, tool); |
19d4ac3c | 669 | struct symbol *parent = NULL; |
8115d60c | 670 | u64 ip = event->ip.ip; |
1ed091c4 | 671 | struct addr_location al; |
19d4ac3c | 672 | int err; |
5b2bb75a | 673 | |
23346f21 | 674 | if (!machine && perf_guest) { |
a1645ce1 | 675 | pr_err("Can't find guest [%d]'s kernel information\n", |
8115d60c | 676 | event->ip.pid); |
a1645ce1 ZY |
677 | return; |
678 | } | |
679 | ||
8115d60c | 680 | if (event->header.misc & PERF_RECORD_MISC_EXACT_IP) |
1758af10 | 681 | top->exact_samples++; |
1676b8a0 | 682 | |
743eb868 | 683 | if (perf_event__preprocess_sample(event, machine, &al, sample, |
8115d60c | 684 | symbol_filter) < 0 || |
72b8fa17 | 685 | al.filtered) |
1ed091c4 | 686 | return; |
07800601 | 687 | |
1758af10 | 688 | if (!top->kptr_restrict_warned && |
5f6f5580 ACM |
689 | symbol_conf.kptr_restrict && |
690 | al.cpumode == PERF_RECORD_MISC_KERNEL) { | |
691 | ui__warning( | |
692 | "Kernel address maps (/proc/{kallsyms,modules}) are restricted.\n\n" | |
693 | "Check /proc/sys/kernel/kptr_restrict.\n\n" | |
694 | "Kernel%s samples will not be resolved.\n", | |
695 | !RB_EMPTY_ROOT(&al.map->dso->symbols[MAP__FUNCTION]) ? | |
696 | " modules" : ""); | |
697 | if (use_browser <= 0) | |
698 | sleep(5); | |
1758af10 | 699 | top->kptr_restrict_warned = true; |
5f6f5580 ACM |
700 | } |
701 | ||
72b8fa17 | 702 | if (al.sym == NULL) { |
e4a338d0 | 703 | const char *msg = "Kernel samples will not be resolved.\n"; |
72b8fa17 ACM |
704 | /* |
705 | * As we do lazy loading of symtabs we only will know if the | |
706 | * specified vmlinux file is invalid when we actually have a | |
707 | * hit in kernel space and then try to load it. So if we get | |
708 | * here and there are _no_ symbols in the DSO backing the | |
709 | * kernel map, bail out. | |
710 | * | |
711 | * We may never get here, for instance, if we use -K/ | |
712 | * --hide-kernel-symbols, even if the user specifies an | |
713 | * invalid --vmlinux ;-) | |
714 | */ | |
1758af10 | 715 | if (!top->kptr_restrict_warned && !top->vmlinux_warned && |
e4a338d0 | 716 | al.map == machine->vmlinux_maps[MAP__FUNCTION] && |
72b8fa17 | 717 | RB_EMPTY_ROOT(&al.map->dso->symbols[MAP__FUNCTION])) { |
e4a338d0 ACM |
718 | if (symbol_conf.vmlinux_name) { |
719 | ui__warning("The %s file can't be used.\n%s", | |
720 | symbol_conf.vmlinux_name, msg); | |
721 | } else { | |
722 | ui__warning("A vmlinux file was not found.\n%s", | |
723 | msg); | |
724 | } | |
725 | ||
726 | if (use_browser <= 0) | |
727 | sleep(5); | |
1758af10 | 728 | top->vmlinux_warned = true; |
72b8fa17 | 729 | } |
6cff0e8d KS |
730 | } |
731 | ||
ab81f3fd | 732 | if (al.sym == NULL || !al.sym->ignore) { |
ab81f3fd | 733 | struct hist_entry *he; |
70db7533 | 734 | |
19d4ac3c ACM |
735 | if ((sort__has_parent || symbol_conf.use_callchain) && |
736 | sample->callchain) { | |
743eb868 ACM |
737 | err = machine__resolve_callchain(machine, evsel, al.thread, |
738 | sample->callchain, &parent); | |
19d4ac3c ACM |
739 | if (err) |
740 | return; | |
741 | } | |
742 | ||
743eb868 | 743 | he = perf_evsel__add_hist_entry(evsel, &al, sample); |
ab81f3fd ACM |
744 | if (he == NULL) { |
745 | pr_err("Problem incrementing symbol period, skipping event\n"); | |
746 | return; | |
5807806a | 747 | } |
ab81f3fd | 748 | |
19d4ac3c | 749 | if (symbol_conf.use_callchain) { |
246d4ce8 | 750 | err = callchain_append(he->callchain, &evsel->hists.callchain_cursor, |
19d4ac3c ACM |
751 | sample->period); |
752 | if (err) | |
753 | return; | |
754 | } | |
755 | ||
1758af10 ACM |
756 | if (top->sort_has_symbols) |
757 | perf_top__record_precise_ip(top, he, evsel->idx, ip); | |
5b2bb75a | 758 | } |
ab81f3fd ACM |
759 | |
760 | return; | |
07800601 IM |
761 | } |
762 | ||
1758af10 | 763 | static void perf_top__mmap_read_idx(struct perf_top *top, int idx) |
07800601 | 764 | { |
8d50e5b4 | 765 | struct perf_sample sample; |
7b27509f | 766 | struct perf_evsel *evsel; |
1758af10 | 767 | struct perf_session *session = top->session; |
8115d60c | 768 | union perf_event *event; |
743eb868 ACM |
769 | struct machine *machine; |
770 | u8 origin; | |
5538beca | 771 | int ret; |
07800601 | 772 | |
1758af10 ACM |
773 | while ((event = perf_evlist__mmap_read(top->evlist, idx)) != NULL) { |
774 | ret = perf_session__parse_sample(session, event, &sample); | |
5538beca FW |
775 | if (ret) { |
776 | pr_err("Can't parse sample, err = %d\n", ret); | |
777 | continue; | |
778 | } | |
04391deb | 779 | |
1758af10 | 780 | evsel = perf_evlist__id2evsel(session->evlist, sample.id); |
7b27509f ACM |
781 | assert(evsel != NULL); |
782 | ||
743eb868 ACM |
783 | origin = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; |
784 | ||
5b2bb75a | 785 | if (event->header.type == PERF_RECORD_SAMPLE) |
1758af10 | 786 | ++top->samples; |
743eb868 ACM |
787 | |
788 | switch (origin) { | |
789 | case PERF_RECORD_MISC_USER: | |
1758af10 ACM |
790 | ++top->us_samples; |
791 | if (top->hide_user_symbols) | |
743eb868 | 792 | continue; |
1758af10 | 793 | machine = perf_session__find_host_machine(session); |
743eb868 ACM |
794 | break; |
795 | case PERF_RECORD_MISC_KERNEL: | |
1758af10 ACM |
796 | ++top->kernel_samples; |
797 | if (top->hide_kernel_symbols) | |
743eb868 | 798 | continue; |
1758af10 | 799 | machine = perf_session__find_host_machine(session); |
743eb868 ACM |
800 | break; |
801 | case PERF_RECORD_MISC_GUEST_KERNEL: | |
1758af10 ACM |
802 | ++top->guest_kernel_samples; |
803 | machine = perf_session__find_machine(session, event->ip.pid); | |
743eb868 ACM |
804 | break; |
805 | case PERF_RECORD_MISC_GUEST_USER: | |
1758af10 | 806 | ++top->guest_us_samples; |
743eb868 ACM |
807 | /* |
808 | * TODO: we don't process guest user from host side | |
809 | * except simple counting. | |
810 | */ | |
811 | /* Fall thru */ | |
812 | default: | |
813 | continue; | |
814 | } | |
815 | ||
816 | ||
1758af10 ACM |
817 | if (event->header.type == PERF_RECORD_SAMPLE) { |
818 | perf_event__process_sample(&top->tool, event, evsel, | |
819 | &sample, machine); | |
820 | } else if (event->header.type < PERF_RECORD_MAX) { | |
7b27509f | 821 | hists__inc_nr_events(&evsel->hists, event->header.type); |
1758af10 | 822 | perf_event__process(&top->tool, event, &sample, machine); |
7b27509f | 823 | } else |
1758af10 | 824 | ++session->hists.stats.nr_unknown_events; |
07800601 | 825 | } |
07800601 IM |
826 | } |
827 | ||
1758af10 | 828 | static void perf_top__mmap_read(struct perf_top *top) |
2f01190a | 829 | { |
70db7533 ACM |
830 | int i; |
831 | ||
1758af10 ACM |
832 | for (i = 0; i < top->evlist->nr_mmaps; i++) |
833 | perf_top__mmap_read_idx(top, i); | |
2f01190a FW |
834 | } |
835 | ||
1758af10 | 836 | static void perf_top__start_counters(struct perf_top *top) |
72cb7013 | 837 | { |
727ab04e | 838 | struct perf_evsel *counter, *first; |
1758af10 | 839 | struct perf_evlist *evlist = top->evlist; |
727ab04e ACM |
840 | |
841 | first = list_entry(evlist->entries.next, struct perf_evsel, node); | |
7e4ff9e3 | 842 | |
72cb7013 ACM |
843 | list_for_each_entry(counter, &evlist->entries, node) { |
844 | struct perf_event_attr *attr = &counter->attr; | |
727ab04e ACM |
845 | struct xyarray *group_fd = NULL; |
846 | ||
1758af10 | 847 | if (top->group && counter != first) |
727ab04e | 848 | group_fd = first->fd; |
716c69fe | 849 | |
72cb7013 ACM |
850 | attr->sample_type = PERF_SAMPLE_IP | PERF_SAMPLE_TID; |
851 | ||
1758af10 | 852 | if (top->freq) { |
72cb7013 ACM |
853 | attr->sample_type |= PERF_SAMPLE_PERIOD; |
854 | attr->freq = 1; | |
1758af10 | 855 | attr->sample_freq = top->freq; |
72cb7013 | 856 | } |
d6d901c2 | 857 | |
70db7533 ACM |
858 | if (evlist->nr_entries > 1) { |
859 | attr->sample_type |= PERF_SAMPLE_ID; | |
860 | attr->read_format |= PERF_FORMAT_ID; | |
861 | } | |
862 | ||
19d4ac3c ACM |
863 | if (symbol_conf.use_callchain) |
864 | attr->sample_type |= PERF_SAMPLE_CALLCHAIN; | |
865 | ||
72cb7013 | 866 | attr->mmap = 1; |
ab81f3fd | 867 | attr->comm = 1; |
1758af10 | 868 | attr->inherit = top->inherit; |
7b27509f | 869 | retry_sample_id: |
1758af10 | 870 | attr->sample_id_all = top->sample_id_all_avail ? 1 : 0; |
72cb7013 | 871 | try_again: |
1758af10 ACM |
872 | if (perf_evsel__open(counter, top->evlist->cpus, |
873 | top->evlist->threads, top->group, | |
727ab04e | 874 | group_fd) < 0) { |
d6d901c2 ZY |
875 | int err = errno; |
876 | ||
c286c419 | 877 | if (err == EPERM || err == EACCES) { |
b8631e6e | 878 | ui__error_paranoid(); |
c286c419 | 879 | goto out_err; |
1758af10 | 880 | } else if (err == EINVAL && top->sample_id_all_avail) { |
7b27509f ACM |
881 | /* |
882 | * Old kernel, no attr->sample_id_type_all field | |
883 | */ | |
1758af10 | 884 | top->sample_id_all_avail = false; |
7b27509f | 885 | goto retry_sample_id; |
c286c419 | 886 | } |
d6d901c2 ZY |
887 | /* |
888 | * If it's cycles then fall back to hrtimer | |
889 | * based cpu-clock-tick sw counter, which | |
890 | * is always available even if no PMU support: | |
891 | */ | |
72cb7013 ACM |
892 | if (attr->type == PERF_TYPE_HARDWARE && |
893 | attr->config == PERF_COUNT_HW_CPU_CYCLES) { | |
d6d901c2 | 894 | if (verbose) |
c286c419 ACM |
895 | ui__warning("Cycles event not supported,\n" |
896 | "trying to fall back to cpu-clock-ticks\n"); | |
d6d901c2 ZY |
897 | |
898 | attr->type = PERF_TYPE_SOFTWARE; | |
899 | attr->config = PERF_COUNT_SW_CPU_CLOCK; | |
900 | goto try_again; | |
901 | } | |
c286c419 | 902 | |
ca6a4258 DA |
903 | if (err == ENOENT) { |
904 | ui__warning("The %s event is not supported.\n", | |
905 | event_name(counter)); | |
906 | goto out_err; | |
cdce4459 NK |
907 | } else if (err == EMFILE) { |
908 | ui__warning("Too many events are opened.\n" | |
909 | "Try again after reducing the number of events\n"); | |
910 | goto out_err; | |
ca6a4258 DA |
911 | } |
912 | ||
c286c419 ACM |
913 | ui__warning("The sys_perf_event_open() syscall " |
914 | "returned with %d (%s). /bin/dmesg " | |
915 | "may provide additional information.\n" | |
916 | "No CONFIG_PERF_EVENTS=y kernel support " | |
917 | "configured?\n", err, strerror(err)); | |
918 | goto out_err; | |
d6d901c2 | 919 | } |
716c69fe | 920 | } |
70db7533 | 921 | |
1758af10 | 922 | if (perf_evlist__mmap(evlist, top->mmap_pages, false) < 0) { |
c286c419 ACM |
923 | ui__warning("Failed to mmap with %d (%s)\n", |
924 | errno, strerror(errno)); | |
925 | goto out_err; | |
926 | } | |
927 | ||
928 | return; | |
929 | ||
930 | out_err: | |
931 | exit_browser(0); | |
932 | exit(0); | |
716c69fe IM |
933 | } |
934 | ||
1758af10 | 935 | static int perf_top__setup_sample_type(struct perf_top *top) |
19d4ac3c | 936 | { |
1758af10 | 937 | if (!top->sort_has_symbols) { |
19d4ac3c ACM |
938 | if (symbol_conf.use_callchain) { |
939 | ui__warning("Selected -g but \"sym\" not present in --sort/-s."); | |
940 | return -EINVAL; | |
941 | } | |
1758af10 | 942 | } else if (!top->dont_use_callchains && callchain_param.mode != CHAIN_NONE) { |
19d4ac3c ACM |
943 | if (callchain_register_param(&callchain_param) < 0) { |
944 | ui__warning("Can't register callchain params.\n"); | |
945 | return -EINVAL; | |
946 | } | |
947 | } | |
948 | ||
949 | return 0; | |
950 | } | |
951 | ||
1758af10 | 952 | static int __cmd_top(struct perf_top *top) |
716c69fe IM |
953 | { |
954 | pthread_t thread; | |
19d4ac3c | 955 | int ret; |
d8f66248 | 956 | /* |
b3165f41 ACM |
957 | * FIXME: perf_session__new should allow passing a O_MMAP, so that all this |
958 | * mmap reading, etc is encapsulated in it. Use O_WRONLY for now. | |
d8f66248 | 959 | */ |
1758af10 ACM |
960 | top->session = perf_session__new(NULL, O_WRONLY, false, false, NULL); |
961 | if (top->session == NULL) | |
b3165f41 | 962 | return -ENOMEM; |
07800601 | 963 | |
1758af10 | 964 | ret = perf_top__setup_sample_type(top); |
19d4ac3c ACM |
965 | if (ret) |
966 | goto out_delete; | |
967 | ||
b52956c9 | 968 | if (top->target_tid || top->uid != UINT_MAX) |
1758af10 | 969 | perf_event__synthesize_thread_map(&top->tool, top->evlist->threads, |
743eb868 | 970 | perf_event__process, |
1758af10 | 971 | &top->session->host_machine); |
5b2bb75a | 972 | else |
1758af10 ACM |
973 | perf_event__synthesize_threads(&top->tool, perf_event__process, |
974 | &top->session->host_machine); | |
975 | perf_top__start_counters(top); | |
976 | top->session->evlist = top->evlist; | |
977 | perf_session__update_sample_type(top->session); | |
07800601 | 978 | |
2f01190a | 979 | /* Wait for a minimal set of events before starting the snapshot */ |
1758af10 | 980 | poll(top->evlist->pollfd, top->evlist->nr_fds, 100); |
2f01190a | 981 | |
1758af10 | 982 | perf_top__mmap_read(top); |
2f01190a | 983 | |
c0443df1 | 984 | if (pthread_create(&thread, NULL, (use_browser > 0 ? display_thread_tui : |
1758af10 | 985 | display_thread), top)) { |
07800601 IM |
986 | printf("Could not create display thread.\n"); |
987 | exit(-1); | |
988 | } | |
989 | ||
1758af10 | 990 | if (top->realtime_prio) { |
07800601 IM |
991 | struct sched_param param; |
992 | ||
1758af10 | 993 | param.sched_priority = top->realtime_prio; |
07800601 IM |
994 | if (sched_setscheduler(0, SCHED_FIFO, ¶m)) { |
995 | printf("Could not set realtime priority.\n"); | |
996 | exit(-1); | |
997 | } | |
998 | } | |
999 | ||
1000 | while (1) { | |
1758af10 | 1001 | u64 hits = top->samples; |
07800601 | 1002 | |
1758af10 | 1003 | perf_top__mmap_read(top); |
07800601 | 1004 | |
1758af10 ACM |
1005 | if (hits == top->samples) |
1006 | ret = poll(top->evlist->pollfd, top->evlist->nr_fds, 100); | |
07800601 IM |
1007 | } |
1008 | ||
19d4ac3c | 1009 | out_delete: |
1758af10 ACM |
1010 | perf_session__delete(top->session); |
1011 | top->session = NULL; | |
19d4ac3c ACM |
1012 | |
1013 | return 0; | |
1014 | } | |
1015 | ||
1016 | static int | |
1758af10 | 1017 | parse_callchain_opt(const struct option *opt, const char *arg, int unset) |
19d4ac3c | 1018 | { |
1758af10 | 1019 | struct perf_top *top = (struct perf_top *)opt->value; |
19d4ac3c ACM |
1020 | char *tok, *tok2; |
1021 | char *endptr; | |
1022 | ||
1023 | /* | |
1024 | * --no-call-graph | |
1025 | */ | |
1026 | if (unset) { | |
1758af10 | 1027 | top->dont_use_callchains = true; |
19d4ac3c ACM |
1028 | return 0; |
1029 | } | |
1030 | ||
1031 | symbol_conf.use_callchain = true; | |
1032 | ||
1033 | if (!arg) | |
1034 | return 0; | |
1035 | ||
1036 | tok = strtok((char *)arg, ","); | |
1037 | if (!tok) | |
1038 | return -1; | |
1039 | ||
1040 | /* get the output mode */ | |
1041 | if (!strncmp(tok, "graph", strlen(arg))) | |
1042 | callchain_param.mode = CHAIN_GRAPH_ABS; | |
1043 | ||
1044 | else if (!strncmp(tok, "flat", strlen(arg))) | |
1045 | callchain_param.mode = CHAIN_FLAT; | |
1046 | ||
1047 | else if (!strncmp(tok, "fractal", strlen(arg))) | |
1048 | callchain_param.mode = CHAIN_GRAPH_REL; | |
1049 | ||
1050 | else if (!strncmp(tok, "none", strlen(arg))) { | |
1051 | callchain_param.mode = CHAIN_NONE; | |
1052 | symbol_conf.use_callchain = false; | |
1053 | ||
1054 | return 0; | |
806fb630 | 1055 | } else |
19d4ac3c ACM |
1056 | return -1; |
1057 | ||
1058 | /* get the min percentage */ | |
1059 | tok = strtok(NULL, ","); | |
1060 | if (!tok) | |
1061 | goto setup; | |
1062 | ||
1063 | callchain_param.min_percent = strtod(tok, &endptr); | |
1064 | if (tok == endptr) | |
1065 | return -1; | |
1066 | ||
1067 | /* get the print limit */ | |
1068 | tok2 = strtok(NULL, ","); | |
1069 | if (!tok2) | |
1070 | goto setup; | |
1071 | ||
1072 | if (tok2[0] != 'c') { | |
1073 | callchain_param.print_limit = strtod(tok2, &endptr); | |
1074 | tok2 = strtok(NULL, ","); | |
1075 | if (!tok2) | |
1076 | goto setup; | |
1077 | } | |
1078 | ||
1079 | /* get the call chain order */ | |
1080 | if (!strcmp(tok2, "caller")) | |
1081 | callchain_param.order = ORDER_CALLER; | |
1082 | else if (!strcmp(tok2, "callee")) | |
1083 | callchain_param.order = ORDER_CALLEE; | |
1084 | else | |
1085 | return -1; | |
1086 | setup: | |
1087 | if (callchain_register_param(&callchain_param) < 0) { | |
1088 | fprintf(stderr, "Can't register callchain params\n"); | |
1089 | return -1; | |
1090 | } | |
07800601 IM |
1091 | return 0; |
1092 | } | |
b456bae0 IM |
1093 | |
1094 | static const char * const top_usage[] = { | |
1095 | "perf top [<options>]", | |
1096 | NULL | |
1097 | }; | |
1098 | ||
1758af10 ACM |
1099 | int cmd_top(int argc, const char **argv, const char *prefix __used) |
1100 | { | |
1101 | struct perf_evsel *pos; | |
1102 | int status = -ENOMEM; | |
1103 | struct perf_top top = { | |
1104 | .count_filter = 5, | |
1105 | .delay_secs = 2, | |
0d37aa34 | 1106 | .uid = UINT_MAX, |
1758af10 ACM |
1107 | .freq = 1000, /* 1 KHz */ |
1108 | .sample_id_all_avail = true, | |
1109 | .mmap_pages = 128, | |
1110 | .sym_pcnt_filter = 5, | |
1111 | }; | |
1112 | char callchain_default_opt[] = "fractal,0.5,callee"; | |
1113 | const struct option options[] = { | |
8c3e10eb | 1114 | OPT_CALLBACK('e', "event", &top.evlist, "event", |
86847b62 | 1115 | "event selector. use 'perf list' to list available events", |
f120f9d5 | 1116 | parse_events_option), |
1758af10 | 1117 | OPT_INTEGER('c', "count", &top.default_interval, |
b456bae0 | 1118 | "event period to sample"), |
b52956c9 | 1119 | OPT_STRING('p', "pid", &top.target_pid, "pid", |
d6d901c2 | 1120 | "profile events on existing process id"), |
b52956c9 | 1121 | OPT_STRING('t', "tid", &top.target_tid, "tid", |
d6d901c2 | 1122 | "profile events on existing thread id"), |
1758af10 | 1123 | OPT_BOOLEAN('a', "all-cpus", &top.system_wide, |
b456bae0 | 1124 | "system-wide collection from all CPUs"), |
8c3e10eb | 1125 | OPT_STRING('C', "cpu", &top.cpu_list, "cpu", |
c45c6ea2 | 1126 | "list of cpus to monitor"), |
b32d133a ACM |
1127 | OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name, |
1128 | "file", "vmlinux pathname"), | |
8c3e10eb | 1129 | OPT_BOOLEAN('K', "hide_kernel_symbols", &top.hide_kernel_symbols, |
8ffcda17 | 1130 | "hide kernel symbols"), |
1758af10 ACM |
1131 | OPT_UINTEGER('m', "mmap-pages", &top.mmap_pages, "number of mmap data pages"), |
1132 | OPT_INTEGER('r', "realtime", &top.realtime_prio, | |
b456bae0 | 1133 | "collect data with this RT SCHED_FIFO priority"), |
8c3e10eb | 1134 | OPT_INTEGER('d', "delay", &top.delay_secs, |
b456bae0 | 1135 | "number of seconds to delay between refreshes"), |
1758af10 | 1136 | OPT_BOOLEAN('D', "dump-symtab", &top.dump_symtab, |
b456bae0 | 1137 | "dump the symbol table used for profiling"), |
8c3e10eb | 1138 | OPT_INTEGER('f', "count-filter", &top.count_filter, |
b456bae0 | 1139 | "only display functions with more events than this"), |
1758af10 | 1140 | OPT_BOOLEAN('g', "group", &top.group, |
b456bae0 | 1141 | "put the counters into a counter group"), |
1758af10 | 1142 | OPT_BOOLEAN('i', "inherit", &top.inherit, |
0fdc7e67 | 1143 | "child tasks inherit counters"), |
1758af10 | 1144 | OPT_STRING(0, "sym-annotate", &top.sym_filter, "symbol name", |
6cff0e8d | 1145 | "symbol to annotate"), |
8c3e10eb | 1146 | OPT_BOOLEAN('z', "zero", &top.zero, |
b456bae0 | 1147 | "zero history across updates"), |
8c3e10eb | 1148 | OPT_INTEGER('F', "freq", &top.freq, |
b456bae0 | 1149 | "profile at this frequency"), |
8c3e10eb | 1150 | OPT_INTEGER('E', "entries", &top.print_entries, |
6e53cdf1 | 1151 | "display this many functions"), |
8c3e10eb | 1152 | OPT_BOOLEAN('U', "hide_user_symbols", &top.hide_user_symbols, |
8ffcda17 | 1153 | "hide user symbols"), |
1758af10 ACM |
1154 | OPT_BOOLEAN(0, "tui", &top.use_tui, "Use the TUI interface"), |
1155 | OPT_BOOLEAN(0, "stdio", &top.use_stdio, "Use the stdio interface"), | |
c0555642 | 1156 | OPT_INCR('v', "verbose", &verbose, |
3da297a6 | 1157 | "be more verbose (show counter open errors, etc)"), |
ab81f3fd ACM |
1158 | OPT_STRING('s', "sort", &sort_order, "key[,key2...]", |
1159 | "sort by key(s): pid, comm, dso, symbol, parent"), | |
1160 | OPT_BOOLEAN('n', "show-nr-samples", &symbol_conf.show_nr_samples, | |
1161 | "Show a column with the number of samples"), | |
1758af10 | 1162 | OPT_CALLBACK_DEFAULT('G', "call-graph", &top, "output_type,min_percent, call_order", |
19d4ac3c ACM |
1163 | "Display callchains using output_type (graph, flat, fractal, or none), min percent threshold and callchain order. " |
1164 | "Default: fractal,0.5,callee", &parse_callchain_opt, | |
1165 | callchain_default_opt), | |
ab81f3fd ACM |
1166 | OPT_BOOLEAN(0, "show-total-period", &symbol_conf.show_total_period, |
1167 | "Show a column with the sum of periods"), | |
1168 | OPT_STRING(0, "dsos", &symbol_conf.dso_list_str, "dso[,dso...]", | |
1169 | "only consider symbols in these dsos"), | |
1170 | OPT_STRING(0, "comms", &symbol_conf.comm_list_str, "comm[,comm...]", | |
1171 | "only consider symbols in these comms"), | |
1172 | OPT_STRING(0, "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]", | |
1173 | "only consider these symbols"), | |
64c6f0c7 ACM |
1174 | OPT_BOOLEAN(0, "source", &symbol_conf.annotate_src, |
1175 | "Interleave source code with assembly code (default)"), | |
1176 | OPT_BOOLEAN(0, "asm-raw", &symbol_conf.annotate_asm_raw, | |
1177 | "Display raw encoding of assembly instructions (default)"), | |
1178 | OPT_STRING('M', "disassembler-style", &disassembler_style, "disassembler style", | |
1179 | "Specify disassembler style (e.g. -M intel for intel syntax)"), | |
0d37aa34 | 1180 | OPT_STRING('u', "uid", &top.uid_str, "user", "user to profile"), |
b456bae0 | 1181 | OPT_END() |
1758af10 | 1182 | }; |
b456bae0 | 1183 | |
8c3e10eb ACM |
1184 | top.evlist = perf_evlist__new(NULL, NULL); |
1185 | if (top.evlist == NULL) | |
361c99a6 ACM |
1186 | return -ENOMEM; |
1187 | ||
ab81f3fd | 1188 | symbol_conf.exclude_other = false; |
b456bae0 | 1189 | |
b456bae0 IM |
1190 | argc = parse_options(argc, argv, options, top_usage, 0); |
1191 | if (argc) | |
1192 | usage_with_options(top_usage, options); | |
1193 | ||
ab81f3fd ACM |
1194 | if (sort_order == default_sort_order) |
1195 | sort_order = "dso,symbol"; | |
1196 | ||
1197 | setup_sorting(top_usage, options); | |
1198 | ||
1758af10 | 1199 | if (top.use_stdio) |
c0443df1 | 1200 | use_browser = 0; |
1758af10 | 1201 | else if (top.use_tui) |
c0443df1 ACM |
1202 | use_browser = 1; |
1203 | ||
1204 | setup_browser(false); | |
1205 | ||
0d37aa34 ACM |
1206 | top.uid = parse_target_uid(top.uid_str, top.target_tid, top.target_pid); |
1207 | if (top.uid_str != NULL && top.uid == UINT_MAX - 1) | |
1208 | goto out_delete_evlist; | |
1209 | ||
b456bae0 | 1210 | /* CPU and PID are mutually exclusive */ |
b52956c9 | 1211 | if (top.target_tid && top.cpu_list) { |
b456bae0 IM |
1212 | printf("WARNING: PID switch overriding CPU\n"); |
1213 | sleep(1); | |
8c3e10eb | 1214 | top.cpu_list = NULL; |
b456bae0 IM |
1215 | } |
1216 | ||
b52956c9 | 1217 | if (top.target_pid) |
8c3e10eb | 1218 | top.target_tid = top.target_pid; |
7e2ed097 | 1219 | |
8c3e10eb | 1220 | if (perf_evlist__create_maps(top.evlist, top.target_pid, |
0d37aa34 | 1221 | top.target_tid, top.uid, top.cpu_list) < 0) |
7e2ed097 ACM |
1222 | usage_with_options(top_usage, options); |
1223 | ||
8c3e10eb ACM |
1224 | if (!top.evlist->nr_entries && |
1225 | perf_evlist__add_default(top.evlist) < 0) { | |
69aad6f1 ACM |
1226 | pr_err("Not enough memory for event selector list\n"); |
1227 | return -ENOMEM; | |
1228 | } | |
5a8e5a30 | 1229 | |
d04b35f8 ACM |
1230 | symbol_conf.nr_events = top.evlist->nr_entries; |
1231 | ||
8c3e10eb ACM |
1232 | if (top.delay_secs < 1) |
1233 | top.delay_secs = 1; | |
2f335a02 | 1234 | |
7e4ff9e3 MG |
1235 | /* |
1236 | * User specified count overrides default frequency. | |
1237 | */ | |
1758af10 | 1238 | if (top.default_interval) |
8c3e10eb ACM |
1239 | top.freq = 0; |
1240 | else if (top.freq) { | |
1758af10 | 1241 | top.default_interval = top.freq; |
7e4ff9e3 MG |
1242 | } else { |
1243 | fprintf(stderr, "frequency and count are zero, aborting\n"); | |
1244 | exit(EXIT_FAILURE); | |
1245 | } | |
1246 | ||
8c3e10eb | 1247 | list_for_each_entry(pos, &top.evlist->entries, node) { |
69aad6f1 ACM |
1248 | /* |
1249 | * Fill in the ones not specifically initialized via -c: | |
1250 | */ | |
806fb630 ACM |
1251 | if (!pos->attr.sample_period) |
1252 | pos->attr.sample_period = top.default_interval; | |
69aad6f1 ACM |
1253 | } |
1254 | ||
8c3e10eb | 1255 | top.sym_evsel = list_entry(top.evlist->entries.next, struct perf_evsel, node); |
cc841580 | 1256 | |
ab81f3fd | 1257 | symbol_conf.priv_size = sizeof(struct annotation); |
69aad6f1 ACM |
1258 | |
1259 | symbol_conf.try_vmlinux_path = (symbol_conf.vmlinux_name == NULL); | |
1260 | if (symbol__init() < 0) | |
1261 | return -1; | |
1262 | ||
ab81f3fd ACM |
1263 | sort_entry__setup_elide(&sort_dso, symbol_conf.dso_list, "dso", stdout); |
1264 | sort_entry__setup_elide(&sort_comm, symbol_conf.comm_list, "comm", stdout); | |
1265 | sort_entry__setup_elide(&sort_sym, symbol_conf.sym_list, "symbol", stdout); | |
1266 | ||
19d4ac3c ACM |
1267 | /* |
1268 | * Avoid annotation data structures overhead when symbols aren't on the | |
1269 | * sort list. | |
1270 | */ | |
1758af10 | 1271 | top.sort_has_symbols = sort_sym.list.next != NULL; |
19d4ac3c | 1272 | |
1758af10 | 1273 | get_term_dimensions(&top.winsize); |
8c3e10eb | 1274 | if (top.print_entries == 0) { |
1758af10 ACM |
1275 | struct sigaction act = { |
1276 | .sa_sigaction = perf_top__sig_winch, | |
1277 | .sa_flags = SA_SIGINFO, | |
1278 | }; | |
1279 | perf_top__update_print_entries(&top); | |
1280 | sigaction(SIGWINCH, &act, NULL); | |
3b6ed988 ACM |
1281 | } |
1282 | ||
1758af10 | 1283 | status = __cmd_top(&top); |
806fb630 | 1284 | |
0d37aa34 | 1285 | out_delete_evlist: |
8c3e10eb | 1286 | perf_evlist__delete(top.evlist); |
69aad6f1 ACM |
1287 | |
1288 | return status; | |
b456bae0 | 1289 | } |