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" |
b0a7d1a0 | 29 | #include "util/machine.h" |
b3165f41 ACM |
30 | #include "util/session.h" |
31 | #include "util/symbol.h" | |
439d473b | 32 | #include "util/thread.h" |
fd78260b | 33 | #include "util/thread_map.h" |
8c3e10eb | 34 | #include "util/top.h" |
148be2c1 | 35 | #include "util/util.h" |
43cbcd8a | 36 | #include <linux/rbtree.h> |
b456bae0 IM |
37 | #include "util/parse-options.h" |
38 | #include "util/parse-events.h" | |
a12b51c4 | 39 | #include "util/cpumap.h" |
69aad6f1 | 40 | #include "util/xyarray.h" |
ab81f3fd | 41 | #include "util/sort.h" |
6b118e92 | 42 | #include "util/intlist.h" |
07800601 | 43 | |
8f28827a FW |
44 | #include "util/debug.h" |
45 | ||
07800601 | 46 | #include <assert.h> |
31d68e7b | 47 | #include <elf.h> |
07800601 | 48 | #include <fcntl.h> |
0e9b20b8 | 49 | |
07800601 | 50 | #include <stdio.h> |
923c42c1 MG |
51 | #include <termios.h> |
52 | #include <unistd.h> | |
9486aa38 | 53 | #include <inttypes.h> |
0e9b20b8 | 54 | |
07800601 | 55 | #include <errno.h> |
07800601 IM |
56 | #include <time.h> |
57 | #include <sched.h> | |
07800601 IM |
58 | |
59 | #include <sys/syscall.h> | |
60 | #include <sys/ioctl.h> | |
61 | #include <sys/poll.h> | |
62 | #include <sys/prctl.h> | |
63 | #include <sys/wait.h> | |
64 | #include <sys/uio.h> | |
31d68e7b | 65 | #include <sys/utsname.h> |
07800601 IM |
66 | #include <sys/mman.h> |
67 | ||
68 | #include <linux/unistd.h> | |
69 | #include <linux/types.h> | |
70 | ||
895f0edc | 71 | void get_term_dimensions(struct winsize *ws) |
3b6ed988 | 72 | { |
13cc5079 ACM |
73 | char *s = getenv("LINES"); |
74 | ||
75 | if (s != NULL) { | |
76 | ws->ws_row = atoi(s); | |
77 | s = getenv("COLUMNS"); | |
78 | if (s != NULL) { | |
79 | ws->ws_col = atoi(s); | |
80 | if (ws->ws_row && ws->ws_col) | |
81 | return; | |
82 | } | |
3b6ed988 | 83 | } |
13cc5079 ACM |
84 | #ifdef TIOCGWINSZ |
85 | if (ioctl(1, TIOCGWINSZ, ws) == 0 && | |
86 | ws->ws_row && ws->ws_col) | |
87 | return; | |
3b6ed988 | 88 | #endif |
13cc5079 ACM |
89 | ws->ws_row = 25; |
90 | ws->ws_col = 80; | |
3b6ed988 ACM |
91 | } |
92 | ||
1758af10 | 93 | static void perf_top__update_print_entries(struct perf_top *top) |
3b6ed988 | 94 | { |
1758af10 ACM |
95 | if (top->print_entries > 9) |
96 | top->print_entries -= 9; | |
3b6ed988 ACM |
97 | } |
98 | ||
1d037ca1 IT |
99 | static void perf_top__sig_winch(int sig __maybe_unused, |
100 | siginfo_t *info __maybe_unused, void *arg) | |
3b6ed988 | 101 | { |
1758af10 ACM |
102 | struct perf_top *top = arg; |
103 | ||
104 | get_term_dimensions(&top->winsize); | |
509605db SE |
105 | if (!top->print_entries |
106 | || (top->print_entries+4) > top->winsize.ws_row) { | |
107 | top->print_entries = top->winsize.ws_row; | |
108 | } else { | |
109 | top->print_entries += 4; | |
110 | top->winsize.ws_row = top->print_entries; | |
111 | } | |
1758af10 | 112 | perf_top__update_print_entries(top); |
3b6ed988 ACM |
113 | } |
114 | ||
1758af10 | 115 | static int perf_top__parse_source(struct perf_top *top, struct hist_entry *he) |
923c42c1 MG |
116 | { |
117 | struct symbol *sym; | |
ce6f4fab | 118 | struct annotation *notes; |
439d473b | 119 | struct map *map; |
36532461 | 120 | int err = -1; |
923c42c1 | 121 | |
ab81f3fd | 122 | if (!he || !he->ms.sym) |
b0a9ab62 ACM |
123 | return -1; |
124 | ||
ab81f3fd ACM |
125 | sym = he->ms.sym; |
126 | map = he->ms.map; | |
b0a9ab62 ACM |
127 | |
128 | /* | |
129 | * We can't annotate with just /proc/kallsyms | |
130 | */ | |
44f24cb3 | 131 | if (map->dso->symtab_type == DSO_BINARY_TYPE__KALLSYMS) { |
ce6f4fab ACM |
132 | pr_err("Can't annotate %s: No vmlinux file was found in the " |
133 | "path\n", sym->name); | |
134 | sleep(1); | |
b0a9ab62 | 135 | return -1; |
b269876c ACM |
136 | } |
137 | ||
ce6f4fab ACM |
138 | notes = symbol__annotation(sym); |
139 | if (notes->src != NULL) { | |
140 | pthread_mutex_lock(¬es->lock); | |
923c42c1 MG |
141 | goto out_assign; |
142 | } | |
923c42c1 | 143 | |
ce6f4fab | 144 | pthread_mutex_lock(¬es->lock); |
923c42c1 | 145 | |
d04b35f8 | 146 | if (symbol__alloc_hist(sym) < 0) { |
c97cf422 | 147 | pthread_mutex_unlock(¬es->lock); |
36532461 ACM |
148 | pr_err("Not enough memory for annotating '%s' symbol!\n", |
149 | sym->name); | |
ce6f4fab | 150 | sleep(1); |
c97cf422 | 151 | return err; |
923c42c1 | 152 | } |
36532461 | 153 | |
ab81f3fd | 154 | err = symbol__annotate(sym, map, 0); |
36532461 | 155 | if (err == 0) { |
923c42c1 | 156 | out_assign: |
1758af10 | 157 | top->sym_filter_entry = he; |
36532461 | 158 | } |
c97cf422 | 159 | |
ce6f4fab | 160 | pthread_mutex_unlock(¬es->lock); |
36532461 | 161 | return err; |
923c42c1 MG |
162 | } |
163 | ||
ab81f3fd | 164 | static void __zero_source_counters(struct hist_entry *he) |
923c42c1 | 165 | { |
ab81f3fd | 166 | struct symbol *sym = he->ms.sym; |
36532461 | 167 | symbol__annotate_zero_histograms(sym); |
923c42c1 MG |
168 | } |
169 | ||
31d68e7b ACM |
170 | static void ui__warn_map_erange(struct map *map, struct symbol *sym, u64 ip) |
171 | { | |
172 | struct utsname uts; | |
173 | int err = uname(&uts); | |
174 | ||
175 | ui__warning("Out of bounds address found:\n\n" | |
176 | "Addr: %" PRIx64 "\n" | |
177 | "DSO: %s %c\n" | |
178 | "Map: %" PRIx64 "-%" PRIx64 "\n" | |
179 | "Symbol: %" PRIx64 "-%" PRIx64 " %c %s\n" | |
180 | "Arch: %s\n" | |
181 | "Kernel: %s\n" | |
182 | "Tools: %s\n\n" | |
183 | "Not all samples will be on the annotation output.\n\n" | |
184 | "Please report to linux-kernel@vger.kernel.org\n", | |
185 | ip, map->dso->long_name, dso__symtab_origin(map->dso), | |
186 | map->start, map->end, sym->start, sym->end, | |
187 | sym->binding == STB_GLOBAL ? 'g' : | |
188 | sym->binding == STB_LOCAL ? 'l' : 'w', sym->name, | |
189 | err ? "[unknown]" : uts.machine, | |
190 | err ? "[unknown]" : uts.release, perf_version_string); | |
191 | if (use_browser <= 0) | |
192 | sleep(5); | |
193 | ||
194 | map->erange_warned = true; | |
195 | } | |
196 | ||
1758af10 ACM |
197 | static void perf_top__record_precise_ip(struct perf_top *top, |
198 | struct hist_entry *he, | |
199 | int counter, u64 ip) | |
923c42c1 | 200 | { |
ce6f4fab ACM |
201 | struct annotation *notes; |
202 | struct symbol *sym; | |
31d68e7b | 203 | int err; |
ce6f4fab | 204 | |
ab81f3fd | 205 | if (he == NULL || he->ms.sym == NULL || |
1758af10 ACM |
206 | ((top->sym_filter_entry == NULL || |
207 | top->sym_filter_entry->ms.sym != he->ms.sym) && use_browser != 1)) | |
923c42c1 MG |
208 | return; |
209 | ||
ab81f3fd | 210 | sym = he->ms.sym; |
ce6f4fab ACM |
211 | notes = symbol__annotation(sym); |
212 | ||
213 | if (pthread_mutex_trylock(¬es->lock)) | |
923c42c1 MG |
214 | return; |
215 | ||
d04b35f8 | 216 | if (notes->src == NULL && symbol__alloc_hist(sym) < 0) { |
ab81f3fd ACM |
217 | pthread_mutex_unlock(¬es->lock); |
218 | pr_err("Not enough memory for annotating '%s' symbol!\n", | |
219 | sym->name); | |
220 | sleep(1); | |
221 | return; | |
222 | } | |
223 | ||
224 | ip = he->ms.map->map_ip(he->ms.map, ip); | |
31d68e7b | 225 | err = symbol__inc_addr_samples(sym, he->ms.map, counter, ip); |
c7ad21af | 226 | |
ce6f4fab | 227 | pthread_mutex_unlock(¬es->lock); |
31d68e7b ACM |
228 | |
229 | if (err == -ERANGE && !he->ms.map->erange_warned) | |
230 | ui__warn_map_erange(he->ms.map, sym, ip); | |
923c42c1 MG |
231 | } |
232 | ||
1758af10 | 233 | static void perf_top__show_details(struct perf_top *top) |
923c42c1 | 234 | { |
1758af10 | 235 | struct hist_entry *he = top->sym_filter_entry; |
ce6f4fab | 236 | struct annotation *notes; |
923c42c1 | 237 | struct symbol *symbol; |
36532461 | 238 | int more; |
923c42c1 | 239 | |
ab81f3fd | 240 | if (!he) |
923c42c1 MG |
241 | return; |
242 | ||
ab81f3fd | 243 | symbol = he->ms.sym; |
ce6f4fab ACM |
244 | notes = symbol__annotation(symbol); |
245 | ||
246 | pthread_mutex_lock(¬es->lock); | |
247 | ||
248 | if (notes->src == NULL) | |
249 | goto out_unlock; | |
923c42c1 | 250 | |
7289f83c | 251 | printf("Showing %s for %s\n", perf_evsel__name(top->sym_evsel), symbol->name); |
1758af10 | 252 | printf(" Events Pcnt (>=%d%%)\n", top->sym_pcnt_filter); |
923c42c1 | 253 | |
1758af10 ACM |
254 | more = symbol__annotate_printf(symbol, he->ms.map, top->sym_evsel->idx, |
255 | 0, top->sym_pcnt_filter, top->print_entries, 4); | |
256 | if (top->zero) | |
257 | symbol__annotate_zero_histogram(symbol, top->sym_evsel->idx); | |
36532461 | 258 | else |
1758af10 | 259 | symbol__annotate_decay_histogram(symbol, top->sym_evsel->idx); |
36532461 | 260 | if (more != 0) |
923c42c1 | 261 | printf("%d lines not displayed, maybe increase display entries [e]\n", more); |
ce6f4fab ACM |
262 | out_unlock: |
263 | pthread_mutex_unlock(¬es->lock); | |
923c42c1 | 264 | } |
07800601 | 265 | |
07800601 IM |
266 | static const char CONSOLE_CLEAR[] = "\e[H\e[2J"; |
267 | ||
743eb868 ACM |
268 | static struct hist_entry *perf_evsel__add_hist_entry(struct perf_evsel *evsel, |
269 | struct addr_location *al, | |
270 | struct perf_sample *sample) | |
de04687f | 271 | { |
ab81f3fd ACM |
272 | struct hist_entry *he; |
273 | ||
274 | he = __hists__add_entry(&evsel->hists, al, NULL, sample->period); | |
275 | if (he == NULL) | |
276 | return NULL; | |
277 | ||
ab81f3fd ACM |
278 | hists__inc_nr_events(&evsel->hists, PERF_RECORD_SAMPLE); |
279 | return he; | |
de04687f | 280 | } |
07800601 | 281 | |
1758af10 | 282 | static void perf_top__print_sym_table(struct perf_top *top) |
07800601 | 283 | { |
8c3e10eb ACM |
284 | char bf[160]; |
285 | int printed = 0; | |
1758af10 | 286 | const int win_width = top->winsize.ws_col - 1; |
d94b9430 | 287 | |
0f5486b5 | 288 | puts(CONSOLE_CLEAR); |
07800601 | 289 | |
1758af10 | 290 | perf_top__header_snprintf(top, bf, sizeof(bf)); |
8c3e10eb | 291 | printf("%s\n", bf); |
07800601 | 292 | |
1758af10 | 293 | perf_top__reset_sample_counters(top); |
07800601 | 294 | |
1a105f74 | 295 | printf("%-*.*s\n", win_width, win_width, graph_dotted_line); |
07800601 | 296 | |
1758af10 ACM |
297 | if (top->sym_evsel->hists.stats.nr_lost_warned != |
298 | top->sym_evsel->hists.stats.nr_events[PERF_RECORD_LOST]) { | |
299 | top->sym_evsel->hists.stats.nr_lost_warned = | |
300 | top->sym_evsel->hists.stats.nr_events[PERF_RECORD_LOST]; | |
7b27509f ACM |
301 | color_fprintf(stdout, PERF_COLOR_RED, |
302 | "WARNING: LOST %d chunks, Check IO/CPU overload", | |
1758af10 | 303 | top->sym_evsel->hists.stats.nr_lost_warned); |
ab81f3fd | 304 | ++printed; |
93fc64f1 ACM |
305 | } |
306 | ||
1758af10 ACM |
307 | if (top->sym_filter_entry) { |
308 | perf_top__show_details(top); | |
923c42c1 MG |
309 | return; |
310 | } | |
311 | ||
1758af10 ACM |
312 | hists__collapse_resort_threaded(&top->sym_evsel->hists); |
313 | hists__output_resort_threaded(&top->sym_evsel->hists); | |
314 | hists__decay_entries_threaded(&top->sym_evsel->hists, | |
315 | top->hide_user_symbols, | |
316 | top->hide_kernel_symbols); | |
317 | hists__output_recalc_col_len(&top->sym_evsel->hists, | |
318 | top->winsize.ws_row - 3); | |
7cc017ed | 319 | putchar('\n'); |
41724e4c | 320 | hists__fprintf(&top->sym_evsel->hists, false, |
1758af10 | 321 | top->winsize.ws_row - 4 - printed, win_width, stdout); |
07800601 IM |
322 | } |
323 | ||
923c42c1 MG |
324 | static void prompt_integer(int *target, const char *msg) |
325 | { | |
326 | char *buf = malloc(0), *p; | |
327 | size_t dummy = 0; | |
328 | int tmp; | |
329 | ||
330 | fprintf(stdout, "\n%s: ", msg); | |
331 | if (getline(&buf, &dummy, stdin) < 0) | |
332 | return; | |
333 | ||
334 | p = strchr(buf, '\n'); | |
335 | if (p) | |
336 | *p = 0; | |
337 | ||
338 | p = buf; | |
339 | while(*p) { | |
340 | if (!isdigit(*p)) | |
341 | goto out_free; | |
342 | p++; | |
343 | } | |
344 | tmp = strtoul(buf, NULL, 10); | |
345 | *target = tmp; | |
346 | out_free: | |
347 | free(buf); | |
348 | } | |
349 | ||
350 | static void prompt_percent(int *target, const char *msg) | |
351 | { | |
352 | int tmp = 0; | |
353 | ||
354 | prompt_integer(&tmp, msg); | |
355 | if (tmp >= 0 && tmp <= 100) | |
356 | *target = tmp; | |
357 | } | |
358 | ||
1758af10 | 359 | static void perf_top__prompt_symbol(struct perf_top *top, const char *msg) |
923c42c1 MG |
360 | { |
361 | char *buf = malloc(0), *p; | |
1758af10 | 362 | struct hist_entry *syme = top->sym_filter_entry, *n, *found = NULL; |
ab81f3fd | 363 | struct rb_node *next; |
923c42c1 MG |
364 | size_t dummy = 0; |
365 | ||
366 | /* zero counters of active symbol */ | |
367 | if (syme) { | |
923c42c1 | 368 | __zero_source_counters(syme); |
1758af10 | 369 | top->sym_filter_entry = NULL; |
923c42c1 MG |
370 | } |
371 | ||
372 | fprintf(stdout, "\n%s: ", msg); | |
373 | if (getline(&buf, &dummy, stdin) < 0) | |
374 | goto out_free; | |
375 | ||
376 | p = strchr(buf, '\n'); | |
377 | if (p) | |
378 | *p = 0; | |
379 | ||
1758af10 | 380 | next = rb_first(&top->sym_evsel->hists.entries); |
ab81f3fd ACM |
381 | while (next) { |
382 | n = rb_entry(next, struct hist_entry, rb_node); | |
383 | if (n->ms.sym && !strcmp(buf, n->ms.sym->name)) { | |
384 | found = n; | |
923c42c1 MG |
385 | break; |
386 | } | |
ab81f3fd | 387 | next = rb_next(&n->rb_node); |
923c42c1 MG |
388 | } |
389 | ||
390 | if (!found) { | |
66aeb6d5 | 391 | fprintf(stderr, "Sorry, %s is not active.\n", buf); |
923c42c1 | 392 | sleep(1); |
923c42c1 | 393 | } else |
1758af10 | 394 | perf_top__parse_source(top, found); |
923c42c1 MG |
395 | |
396 | out_free: | |
397 | free(buf); | |
398 | } | |
399 | ||
1758af10 | 400 | static void perf_top__print_mapped_keys(struct perf_top *top) |
923c42c1 | 401 | { |
091bd2e9 MG |
402 | char *name = NULL; |
403 | ||
1758af10 ACM |
404 | if (top->sym_filter_entry) { |
405 | struct symbol *sym = top->sym_filter_entry->ms.sym; | |
091bd2e9 MG |
406 | name = sym->name; |
407 | } | |
408 | ||
409 | fprintf(stdout, "\nMapped keys:\n"); | |
1758af10 ACM |
410 | fprintf(stdout, "\t[d] display refresh delay. \t(%d)\n", top->delay_secs); |
411 | fprintf(stdout, "\t[e] display entries (lines). \t(%d)\n", top->print_entries); | |
091bd2e9 | 412 | |
1758af10 | 413 | if (top->evlist->nr_entries > 1) |
7289f83c | 414 | fprintf(stdout, "\t[E] active event counter. \t(%s)\n", perf_evsel__name(top->sym_evsel)); |
091bd2e9 | 415 | |
1758af10 | 416 | fprintf(stdout, "\t[f] profile display filter (count). \t(%d)\n", top->count_filter); |
091bd2e9 | 417 | |
1758af10 | 418 | fprintf(stdout, "\t[F] annotate display filter (percent). \t(%d%%)\n", top->sym_pcnt_filter); |
6cff0e8d KS |
419 | fprintf(stdout, "\t[s] annotate symbol. \t(%s)\n", name?: "NULL"); |
420 | fprintf(stdout, "\t[S] stop annotation.\n"); | |
091bd2e9 | 421 | |
8ffcda17 | 422 | fprintf(stdout, |
1a72cfa6 | 423 | "\t[K] hide kernel_symbols symbols. \t(%s)\n", |
1758af10 | 424 | top->hide_kernel_symbols ? "yes" : "no"); |
8ffcda17 ACM |
425 | fprintf(stdout, |
426 | "\t[U] hide user symbols. \t(%s)\n", | |
1758af10 ACM |
427 | top->hide_user_symbols ? "yes" : "no"); |
428 | fprintf(stdout, "\t[z] toggle sample zeroing. \t(%d)\n", top->zero ? 1 : 0); | |
091bd2e9 MG |
429 | fprintf(stdout, "\t[qQ] quit.\n"); |
430 | } | |
431 | ||
1758af10 | 432 | static int perf_top__key_mapped(struct perf_top *top, int c) |
091bd2e9 MG |
433 | { |
434 | switch (c) { | |
435 | case 'd': | |
436 | case 'e': | |
437 | case 'f': | |
438 | case 'z': | |
439 | case 'q': | |
440 | case 'Q': | |
8ffcda17 ACM |
441 | case 'K': |
442 | case 'U': | |
6cff0e8d KS |
443 | case 'F': |
444 | case 's': | |
445 | case 'S': | |
091bd2e9 MG |
446 | return 1; |
447 | case 'E': | |
1758af10 | 448 | return top->evlist->nr_entries > 1 ? 1 : 0; |
83a0944f IM |
449 | default: |
450 | break; | |
091bd2e9 MG |
451 | } |
452 | ||
453 | return 0; | |
923c42c1 MG |
454 | } |
455 | ||
1758af10 | 456 | static void perf_top__handle_keypress(struct perf_top *top, int c) |
923c42c1 | 457 | { |
1758af10 | 458 | if (!perf_top__key_mapped(top, c)) { |
091bd2e9 MG |
459 | struct pollfd stdin_poll = { .fd = 0, .events = POLLIN }; |
460 | struct termios tc, save; | |
461 | ||
1758af10 | 462 | perf_top__print_mapped_keys(top); |
091bd2e9 MG |
463 | fprintf(stdout, "\nEnter selection, or unmapped key to continue: "); |
464 | fflush(stdout); | |
465 | ||
466 | tcgetattr(0, &save); | |
467 | tc = save; | |
468 | tc.c_lflag &= ~(ICANON | ECHO); | |
469 | tc.c_cc[VMIN] = 0; | |
470 | tc.c_cc[VTIME] = 0; | |
471 | tcsetattr(0, TCSANOW, &tc); | |
472 | ||
473 | poll(&stdin_poll, 1, -1); | |
474 | c = getc(stdin); | |
475 | ||
476 | tcsetattr(0, TCSAFLUSH, &save); | |
1758af10 | 477 | if (!perf_top__key_mapped(top, c)) |
091bd2e9 MG |
478 | return; |
479 | } | |
480 | ||
923c42c1 MG |
481 | switch (c) { |
482 | case 'd': | |
1758af10 ACM |
483 | prompt_integer(&top->delay_secs, "Enter display delay"); |
484 | if (top->delay_secs < 1) | |
485 | top->delay_secs = 1; | |
923c42c1 MG |
486 | break; |
487 | case 'e': | |
1758af10 ACM |
488 | prompt_integer(&top->print_entries, "Enter display entries (lines)"); |
489 | if (top->print_entries == 0) { | |
490 | struct sigaction act = { | |
491 | .sa_sigaction = perf_top__sig_winch, | |
492 | .sa_flags = SA_SIGINFO, | |
493 | }; | |
494 | perf_top__sig_winch(SIGWINCH, NULL, top); | |
495 | sigaction(SIGWINCH, &act, NULL); | |
509605db SE |
496 | } else { |
497 | perf_top__sig_winch(SIGWINCH, NULL, top); | |
3b6ed988 | 498 | signal(SIGWINCH, SIG_DFL); |
509605db | 499 | } |
923c42c1 MG |
500 | break; |
501 | case 'E': | |
1758af10 | 502 | if (top->evlist->nr_entries > 1) { |
ce2d17ca AN |
503 | /* Select 0 as the default event: */ |
504 | int counter = 0; | |
505 | ||
923c42c1 | 506 | fprintf(stderr, "\nAvailable events:"); |
69aad6f1 | 507 | |
1758af10 | 508 | list_for_each_entry(top->sym_evsel, &top->evlist->entries, node) |
7289f83c | 509 | fprintf(stderr, "\n\t%d %s", top->sym_evsel->idx, perf_evsel__name(top->sym_evsel)); |
923c42c1 | 510 | |
ec52d976 | 511 | prompt_integer(&counter, "Enter details event counter"); |
923c42c1 | 512 | |
1758af10 | 513 | if (counter >= top->evlist->nr_entries) { |
0c21f736 | 514 | top->sym_evsel = perf_evlist__first(top->evlist); |
7289f83c | 515 | fprintf(stderr, "Sorry, no such event, using %s.\n", perf_evsel__name(top->sym_evsel)); |
923c42c1 | 516 | sleep(1); |
69aad6f1 | 517 | break; |
923c42c1 | 518 | } |
1758af10 ACM |
519 | list_for_each_entry(top->sym_evsel, &top->evlist->entries, node) |
520 | if (top->sym_evsel->idx == counter) | |
69aad6f1 | 521 | break; |
ec52d976 | 522 | } else |
0c21f736 | 523 | top->sym_evsel = perf_evlist__first(top->evlist); |
923c42c1 MG |
524 | break; |
525 | case 'f': | |
1758af10 | 526 | prompt_integer(&top->count_filter, "Enter display event count filter"); |
923c42c1 MG |
527 | break; |
528 | case 'F': | |
1758af10 ACM |
529 | prompt_percent(&top->sym_pcnt_filter, |
530 | "Enter details display event filter (percent)"); | |
923c42c1 | 531 | break; |
8ffcda17 | 532 | case 'K': |
1758af10 | 533 | top->hide_kernel_symbols = !top->hide_kernel_symbols; |
8ffcda17 | 534 | break; |
923c42c1 MG |
535 | case 'q': |
536 | case 'Q': | |
537 | printf("exiting.\n"); | |
1758af10 ACM |
538 | if (top->dump_symtab) |
539 | perf_session__fprintf_dsos(top->session, stderr); | |
923c42c1 MG |
540 | exit(0); |
541 | case 's': | |
1758af10 | 542 | perf_top__prompt_symbol(top, "Enter details symbol"); |
923c42c1 MG |
543 | break; |
544 | case 'S': | |
1758af10 | 545 | if (!top->sym_filter_entry) |
923c42c1 MG |
546 | break; |
547 | else { | |
1758af10 | 548 | struct hist_entry *syme = top->sym_filter_entry; |
923c42c1 | 549 | |
1758af10 | 550 | top->sym_filter_entry = NULL; |
923c42c1 | 551 | __zero_source_counters(syme); |
923c42c1 MG |
552 | } |
553 | break; | |
8ffcda17 | 554 | case 'U': |
1758af10 | 555 | top->hide_user_symbols = !top->hide_user_symbols; |
8ffcda17 | 556 | break; |
923c42c1 | 557 | case 'z': |
1758af10 | 558 | top->zero = !top->zero; |
923c42c1 | 559 | break; |
83a0944f IM |
560 | default: |
561 | break; | |
923c42c1 MG |
562 | } |
563 | } | |
564 | ||
ab81f3fd ACM |
565 | static void perf_top__sort_new_samples(void *arg) |
566 | { | |
567 | struct perf_top *t = arg; | |
568 | perf_top__reset_sample_counters(t); | |
569 | ||
570 | if (t->evlist->selected != NULL) | |
571 | t->sym_evsel = t->evlist->selected; | |
572 | ||
573 | hists__collapse_resort_threaded(&t->sym_evsel->hists); | |
574 | hists__output_resort_threaded(&t->sym_evsel->hists); | |
b079d4e9 | 575 | hists__decay_entries_threaded(&t->sym_evsel->hists, |
1758af10 ACM |
576 | t->hide_user_symbols, |
577 | t->hide_kernel_symbols); | |
ab81f3fd ACM |
578 | } |
579 | ||
1758af10 | 580 | static void *display_thread_tui(void *arg) |
c0443df1 | 581 | { |
0d37aa34 | 582 | struct perf_evsel *pos; |
1758af10 | 583 | struct perf_top *top = arg; |
ab81f3fd | 584 | const char *help = "For a higher level overview, try: perf top --sort comm,dso"; |
9783adf7 NK |
585 | struct hist_browser_timer hbt = { |
586 | .timer = perf_top__sort_new_samples, | |
587 | .arg = top, | |
588 | .refresh = top->delay_secs, | |
589 | }; | |
ab81f3fd | 590 | |
1758af10 | 591 | perf_top__sort_new_samples(top); |
0d37aa34 ACM |
592 | |
593 | /* | |
594 | * Initialize the uid_filter_str, in the future the TUI will allow | |
595 | * Zooming in/out UIDs. For now juse use whatever the user passed | |
596 | * via --uid. | |
597 | */ | |
598 | list_for_each_entry(pos, &top->evlist->entries, node) | |
2376c67a | 599 | pos->hists.uid_filter_str = top->record_opts.target.uid_str; |
0d37aa34 | 600 | |
68d80758 NK |
601 | perf_evlist__tui_browse_hists(top->evlist, help, &hbt, |
602 | &top->session->header.env); | |
ab81f3fd | 603 | |
c0443df1 ACM |
604 | exit_browser(0); |
605 | exit(0); | |
606 | return NULL; | |
607 | } | |
608 | ||
1758af10 | 609 | static void *display_thread(void *arg) |
07800601 | 610 | { |
0f5486b5 | 611 | struct pollfd stdin_poll = { .fd = 0, .events = POLLIN }; |
923c42c1 | 612 | struct termios tc, save; |
1758af10 | 613 | struct perf_top *top = arg; |
923c42c1 MG |
614 | int delay_msecs, c; |
615 | ||
616 | tcgetattr(0, &save); | |
617 | tc = save; | |
618 | tc.c_lflag &= ~(ICANON | ECHO); | |
619 | tc.c_cc[VMIN] = 0; | |
620 | tc.c_cc[VTIME] = 0; | |
091bd2e9 | 621 | |
3af6e338 | 622 | pthread__unblock_sigwinch(); |
923c42c1 | 623 | repeat: |
1758af10 | 624 | delay_msecs = top->delay_secs * 1000; |
923c42c1 MG |
625 | tcsetattr(0, TCSANOW, &tc); |
626 | /* trash return*/ | |
627 | getc(stdin); | |
07800601 | 628 | |
3af6e338 | 629 | while (1) { |
1758af10 | 630 | perf_top__print_sym_table(top); |
3af6e338 ACM |
631 | /* |
632 | * Either timeout expired or we got an EINTR due to SIGWINCH, | |
633 | * refresh screen in both cases. | |
634 | */ | |
635 | switch (poll(&stdin_poll, 1, delay_msecs)) { | |
636 | case 0: | |
637 | continue; | |
638 | case -1: | |
639 | if (errno == EINTR) | |
640 | continue; | |
641 | /* Fall trhu */ | |
642 | default: | |
643 | goto process_hotkey; | |
644 | } | |
645 | } | |
646 | process_hotkey: | |
923c42c1 MG |
647 | c = getc(stdin); |
648 | tcsetattr(0, TCSAFLUSH, &save); | |
649 | ||
1758af10 | 650 | perf_top__handle_keypress(top, c); |
923c42c1 | 651 | goto repeat; |
07800601 IM |
652 | |
653 | return NULL; | |
654 | } | |
655 | ||
2ab52083 | 656 | /* Tag samples to be skipped. */ |
f37a291c | 657 | static const char *skip_symbols[] = { |
4bea8b5c | 658 | "intel_idle", |
2ab52083 | 659 | "default_idle", |
b0e8572f | 660 | "native_safe_halt", |
2ab52083 AB |
661 | "cpu_idle", |
662 | "enter_idle", | |
663 | "exit_idle", | |
664 | "mwait_idle", | |
59b90056 | 665 | "mwait_idle_with_hints", |
8357275b | 666 | "poll_idle", |
3a3393ef AB |
667 | "ppc64_runlatch_off", |
668 | "pseries_dedicated_idle_sleep", | |
2ab52083 AB |
669 | NULL |
670 | }; | |
671 | ||
1d037ca1 | 672 | static int symbol_filter(struct map *map __maybe_unused, struct symbol *sym) |
07800601 | 673 | { |
de04687f | 674 | const char *name = sym->name; |
2ab52083 | 675 | int i; |
de04687f | 676 | |
3a3393ef AB |
677 | /* |
678 | * ppc64 uses function descriptors and appends a '.' to the | |
679 | * start of every instruction address. Remove it. | |
680 | */ | |
681 | if (name[0] == '.') | |
682 | name++; | |
683 | ||
de04687f ACM |
684 | if (!strcmp(name, "_text") || |
685 | !strcmp(name, "_etext") || | |
686 | !strcmp(name, "_sinittext") || | |
687 | !strncmp("init_module", name, 11) || | |
688 | !strncmp("cleanup_module", name, 14) || | |
689 | strstr(name, "_text_start") || | |
690 | strstr(name, "_text_end")) | |
07800601 | 691 | return 1; |
07800601 | 692 | |
2ab52083 AB |
693 | for (i = 0; skip_symbols[i]; i++) { |
694 | if (!strcmp(skip_symbols[i], name)) { | |
171b3be9 | 695 | sym->ignore = true; |
2ab52083 AB |
696 | break; |
697 | } | |
698 | } | |
07800601 | 699 | |
07800601 IM |
700 | return 0; |
701 | } | |
702 | ||
1758af10 ACM |
703 | static void perf_event__process_sample(struct perf_tool *tool, |
704 | const union perf_event *event, | |
7b27509f | 705 | struct perf_evsel *evsel, |
8115d60c | 706 | struct perf_sample *sample, |
743eb868 | 707 | struct machine *machine) |
07800601 | 708 | { |
1758af10 | 709 | struct perf_top *top = container_of(tool, struct perf_top, tool); |
19d4ac3c | 710 | struct symbol *parent = NULL; |
8115d60c | 711 | u64 ip = event->ip.ip; |
1ed091c4 | 712 | struct addr_location al; |
19d4ac3c | 713 | int err; |
5b2bb75a | 714 | |
23346f21 | 715 | if (!machine && perf_guest) { |
6b118e92 DA |
716 | static struct intlist *seen; |
717 | ||
718 | if (!seen) | |
719 | seen = intlist__new(); | |
720 | ||
721 | if (!intlist__has_entry(seen, event->ip.pid)) { | |
722 | pr_err("Can't find guest [%d]'s kernel information\n", | |
723 | event->ip.pid); | |
724 | intlist__add(seen, event->ip.pid); | |
725 | } | |
a1645ce1 ZY |
726 | return; |
727 | } | |
728 | ||
0c095715 | 729 | if (!machine) { |
ee8d7787 | 730 | pr_err("%u unprocessable samples recorded.\n", |
0c095715 JR |
731 | top->session->hists.stats.nr_unprocessable_samples++); |
732 | return; | |
733 | } | |
734 | ||
8115d60c | 735 | if (event->header.misc & PERF_RECORD_MISC_EXACT_IP) |
1758af10 | 736 | top->exact_samples++; |
1676b8a0 | 737 | |
743eb868 | 738 | if (perf_event__preprocess_sample(event, machine, &al, sample, |
8115d60c | 739 | symbol_filter) < 0 || |
72b8fa17 | 740 | al.filtered) |
1ed091c4 | 741 | return; |
07800601 | 742 | |
1758af10 | 743 | if (!top->kptr_restrict_warned && |
5f6f5580 ACM |
744 | symbol_conf.kptr_restrict && |
745 | al.cpumode == PERF_RECORD_MISC_KERNEL) { | |
746 | ui__warning( | |
747 | "Kernel address maps (/proc/{kallsyms,modules}) are restricted.\n\n" | |
748 | "Check /proc/sys/kernel/kptr_restrict.\n\n" | |
749 | "Kernel%s samples will not be resolved.\n", | |
750 | !RB_EMPTY_ROOT(&al.map->dso->symbols[MAP__FUNCTION]) ? | |
751 | " modules" : ""); | |
752 | if (use_browser <= 0) | |
753 | sleep(5); | |
1758af10 | 754 | top->kptr_restrict_warned = true; |
5f6f5580 ACM |
755 | } |
756 | ||
72b8fa17 | 757 | if (al.sym == NULL) { |
e4a338d0 | 758 | const char *msg = "Kernel samples will not be resolved.\n"; |
72b8fa17 ACM |
759 | /* |
760 | * As we do lazy loading of symtabs we only will know if the | |
761 | * specified vmlinux file is invalid when we actually have a | |
762 | * hit in kernel space and then try to load it. So if we get | |
763 | * here and there are _no_ symbols in the DSO backing the | |
764 | * kernel map, bail out. | |
765 | * | |
766 | * We may never get here, for instance, if we use -K/ | |
767 | * --hide-kernel-symbols, even if the user specifies an | |
768 | * invalid --vmlinux ;-) | |
769 | */ | |
1758af10 | 770 | if (!top->kptr_restrict_warned && !top->vmlinux_warned && |
e4a338d0 | 771 | al.map == machine->vmlinux_maps[MAP__FUNCTION] && |
72b8fa17 | 772 | RB_EMPTY_ROOT(&al.map->dso->symbols[MAP__FUNCTION])) { |
e4a338d0 ACM |
773 | if (symbol_conf.vmlinux_name) { |
774 | ui__warning("The %s file can't be used.\n%s", | |
775 | symbol_conf.vmlinux_name, msg); | |
776 | } else { | |
777 | ui__warning("A vmlinux file was not found.\n%s", | |
778 | msg); | |
779 | } | |
780 | ||
781 | if (use_browser <= 0) | |
782 | sleep(5); | |
1758af10 | 783 | top->vmlinux_warned = true; |
72b8fa17 | 784 | } |
6cff0e8d KS |
785 | } |
786 | ||
ab81f3fd | 787 | if (al.sym == NULL || !al.sym->ignore) { |
ab81f3fd | 788 | struct hist_entry *he; |
70db7533 | 789 | |
19d4ac3c ACM |
790 | if ((sort__has_parent || symbol_conf.use_callchain) && |
791 | sample->callchain) { | |
71ad0f5e JO |
792 | err = machine__resolve_callchain(machine, evsel, |
793 | al.thread, sample, | |
794 | &parent); | |
795 | ||
19d4ac3c ACM |
796 | if (err) |
797 | return; | |
798 | } | |
799 | ||
743eb868 | 800 | he = perf_evsel__add_hist_entry(evsel, &al, sample); |
ab81f3fd ACM |
801 | if (he == NULL) { |
802 | pr_err("Problem incrementing symbol period, skipping event\n"); | |
803 | return; | |
5807806a | 804 | } |
ab81f3fd | 805 | |
19d4ac3c | 806 | if (symbol_conf.use_callchain) { |
47260645 | 807 | err = callchain_append(he->callchain, &callchain_cursor, |
19d4ac3c ACM |
808 | sample->period); |
809 | if (err) | |
810 | return; | |
811 | } | |
812 | ||
1758af10 ACM |
813 | if (top->sort_has_symbols) |
814 | perf_top__record_precise_ip(top, he, evsel->idx, ip); | |
5b2bb75a | 815 | } |
ab81f3fd ACM |
816 | |
817 | return; | |
07800601 IM |
818 | } |
819 | ||
1758af10 | 820 | static void perf_top__mmap_read_idx(struct perf_top *top, int idx) |
07800601 | 821 | { |
8d50e5b4 | 822 | struct perf_sample sample; |
7b27509f | 823 | struct perf_evsel *evsel; |
1758af10 | 824 | struct perf_session *session = top->session; |
8115d60c | 825 | union perf_event *event; |
743eb868 ACM |
826 | struct machine *machine; |
827 | u8 origin; | |
5538beca | 828 | int ret; |
07800601 | 829 | |
1758af10 | 830 | while ((event = perf_evlist__mmap_read(top->evlist, idx)) != NULL) { |
0807d2d8 | 831 | ret = perf_evlist__parse_sample(top->evlist, event, &sample); |
5538beca FW |
832 | if (ret) { |
833 | pr_err("Can't parse sample, err = %d\n", ret); | |
834 | continue; | |
835 | } | |
04391deb | 836 | |
1758af10 | 837 | evsel = perf_evlist__id2evsel(session->evlist, sample.id); |
7b27509f ACM |
838 | assert(evsel != NULL); |
839 | ||
743eb868 ACM |
840 | origin = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; |
841 | ||
5b2bb75a | 842 | if (event->header.type == PERF_RECORD_SAMPLE) |
1758af10 | 843 | ++top->samples; |
743eb868 ACM |
844 | |
845 | switch (origin) { | |
846 | case PERF_RECORD_MISC_USER: | |
1758af10 ACM |
847 | ++top->us_samples; |
848 | if (top->hide_user_symbols) | |
743eb868 | 849 | continue; |
1758af10 | 850 | machine = perf_session__find_host_machine(session); |
743eb868 ACM |
851 | break; |
852 | case PERF_RECORD_MISC_KERNEL: | |
1758af10 ACM |
853 | ++top->kernel_samples; |
854 | if (top->hide_kernel_symbols) | |
743eb868 | 855 | continue; |
1758af10 | 856 | machine = perf_session__find_host_machine(session); |
743eb868 ACM |
857 | break; |
858 | case PERF_RECORD_MISC_GUEST_KERNEL: | |
1758af10 ACM |
859 | ++top->guest_kernel_samples; |
860 | machine = perf_session__find_machine(session, event->ip.pid); | |
743eb868 ACM |
861 | break; |
862 | case PERF_RECORD_MISC_GUEST_USER: | |
1758af10 | 863 | ++top->guest_us_samples; |
743eb868 ACM |
864 | /* |
865 | * TODO: we don't process guest user from host side | |
866 | * except simple counting. | |
867 | */ | |
868 | /* Fall thru */ | |
869 | default: | |
870 | continue; | |
871 | } | |
872 | ||
873 | ||
1758af10 ACM |
874 | if (event->header.type == PERF_RECORD_SAMPLE) { |
875 | perf_event__process_sample(&top->tool, event, evsel, | |
876 | &sample, machine); | |
877 | } else if (event->header.type < PERF_RECORD_MAX) { | |
7b27509f | 878 | hists__inc_nr_events(&evsel->hists, event->header.type); |
b0a7d1a0 | 879 | machine__process_event(machine, event); |
7b27509f | 880 | } else |
1758af10 | 881 | ++session->hists.stats.nr_unknown_events; |
07800601 | 882 | } |
07800601 IM |
883 | } |
884 | ||
1758af10 | 885 | static void perf_top__mmap_read(struct perf_top *top) |
2f01190a | 886 | { |
70db7533 ACM |
887 | int i; |
888 | ||
1758af10 ACM |
889 | for (i = 0; i < top->evlist->nr_mmaps; i++) |
890 | perf_top__mmap_read_idx(top, i); | |
2f01190a FW |
891 | } |
892 | ||
1758af10 | 893 | static void perf_top__start_counters(struct perf_top *top) |
72cb7013 | 894 | { |
6a4bb04c | 895 | struct perf_evsel *counter; |
1758af10 | 896 | struct perf_evlist *evlist = top->evlist; |
2376c67a | 897 | struct perf_record_opts *opts = &top->record_opts; |
727ab04e | 898 | |
2376c67a | 899 | perf_evlist__config(evlist, opts); |
7e4ff9e3 | 900 | |
72cb7013 ACM |
901 | list_for_each_entry(counter, &evlist->entries, node) { |
902 | struct perf_event_attr *attr = &counter->attr; | |
72cb7013 | 903 | try_again: |
1758af10 | 904 | if (perf_evsel__open(counter, top->evlist->cpus, |
6a4bb04c | 905 | top->evlist->threads) < 0) { |
d6d901c2 ZY |
906 | int err = errno; |
907 | ||
c286c419 | 908 | if (err == EPERM || err == EACCES) { |
b8631e6e | 909 | ui__error_paranoid(); |
c286c419 ACM |
910 | goto out_err; |
911 | } | |
d6d901c2 ZY |
912 | /* |
913 | * If it's cycles then fall back to hrtimer | |
914 | * based cpu-clock-tick sw counter, which | |
915 | * is always available even if no PMU support: | |
916 | */ | |
1a31fc90 DA |
917 | if ((err == ENOENT || err == ENXIO) && |
918 | (attr->type == PERF_TYPE_HARDWARE) && | |
919 | (attr->config == PERF_COUNT_HW_CPU_CYCLES)) { | |
920 | ||
d6d901c2 | 921 | if (verbose) |
c286c419 ACM |
922 | ui__warning("Cycles event not supported,\n" |
923 | "trying to fall back to cpu-clock-ticks\n"); | |
d6d901c2 ZY |
924 | |
925 | attr->type = PERF_TYPE_SOFTWARE; | |
926 | attr->config = PERF_COUNT_SW_CPU_CLOCK; | |
40491eaa DA |
927 | if (counter->name) { |
928 | free(counter->name); | |
895d9766 | 929 | counter->name = NULL; |
40491eaa | 930 | } |
d6d901c2 ZY |
931 | goto try_again; |
932 | } | |
c286c419 | 933 | |
ca6a4258 | 934 | if (err == ENOENT) { |
3780f488 | 935 | ui__error("The %s event is not supported.\n", |
7289f83c | 936 | perf_evsel__name(counter)); |
ca6a4258 | 937 | goto out_err; |
cdce4459 | 938 | } else if (err == EMFILE) { |
3780f488 | 939 | ui__error("Too many events are opened.\n" |
cdce4459 NK |
940 | "Try again after reducing the number of events\n"); |
941 | goto out_err; | |
2305c82f DA |
942 | } else if ((err == EOPNOTSUPP) && (attr->precise_ip)) { |
943 | ui__error("\'precise\' request may not be supported. " | |
944 | "Try removing 'p' modifier\n"); | |
945 | goto out_err; | |
ca6a4258 DA |
946 | } |
947 | ||
3780f488 | 948 | ui__error("The sys_perf_event_open() syscall " |
c286c419 ACM |
949 | "returned with %d (%s). /bin/dmesg " |
950 | "may provide additional information.\n" | |
951 | "No CONFIG_PERF_EVENTS=y kernel support " | |
952 | "configured?\n", err, strerror(err)); | |
953 | goto out_err; | |
d6d901c2 | 954 | } |
716c69fe | 955 | } |
70db7533 | 956 | |
2376c67a | 957 | if (perf_evlist__mmap(evlist, opts->mmap_pages, false) < 0) { |
3780f488 | 958 | ui__error("Failed to mmap with %d (%s)\n", |
c286c419 ACM |
959 | errno, strerror(errno)); |
960 | goto out_err; | |
961 | } | |
962 | ||
963 | return; | |
964 | ||
965 | out_err: | |
966 | exit_browser(0); | |
967 | exit(0); | |
716c69fe IM |
968 | } |
969 | ||
1758af10 | 970 | static int perf_top__setup_sample_type(struct perf_top *top) |
19d4ac3c | 971 | { |
1758af10 | 972 | if (!top->sort_has_symbols) { |
19d4ac3c | 973 | if (symbol_conf.use_callchain) { |
3780f488 | 974 | ui__error("Selected -g but \"sym\" not present in --sort/-s."); |
19d4ac3c ACM |
975 | return -EINVAL; |
976 | } | |
2376c67a | 977 | } else if (callchain_param.mode != CHAIN_NONE) { |
19d4ac3c | 978 | if (callchain_register_param(&callchain_param) < 0) { |
3780f488 | 979 | ui__error("Can't register callchain params.\n"); |
19d4ac3c ACM |
980 | return -EINVAL; |
981 | } | |
982 | } | |
983 | ||
984 | return 0; | |
985 | } | |
986 | ||
1758af10 | 987 | static int __cmd_top(struct perf_top *top) |
716c69fe | 988 | { |
2376c67a | 989 | struct perf_record_opts *opts = &top->record_opts; |
716c69fe | 990 | pthread_t thread; |
19d4ac3c | 991 | int ret; |
d8f66248 | 992 | /* |
b3165f41 ACM |
993 | * FIXME: perf_session__new should allow passing a O_MMAP, so that all this |
994 | * mmap reading, etc is encapsulated in it. Use O_WRONLY for now. | |
d8f66248 | 995 | */ |
1758af10 ACM |
996 | top->session = perf_session__new(NULL, O_WRONLY, false, false, NULL); |
997 | if (top->session == NULL) | |
b3165f41 | 998 | return -ENOMEM; |
07800601 | 999 | |
1758af10 | 1000 | ret = perf_top__setup_sample_type(top); |
19d4ac3c ACM |
1001 | if (ret) |
1002 | goto out_delete; | |
1003 | ||
2376c67a | 1004 | if (perf_target__has_task(&opts->target)) |
1758af10 | 1005 | perf_event__synthesize_thread_map(&top->tool, top->evlist->threads, |
743eb868 | 1006 | perf_event__process, |
1758af10 | 1007 | &top->session->host_machine); |
5b2bb75a | 1008 | else |
1758af10 ACM |
1009 | perf_event__synthesize_threads(&top->tool, perf_event__process, |
1010 | &top->session->host_machine); | |
1011 | perf_top__start_counters(top); | |
1012 | top->session->evlist = top->evlist; | |
7b56cce2 | 1013 | perf_session__set_id_hdr_size(top->session); |
07800601 | 1014 | |
2376c67a ACM |
1015 | /* |
1016 | * When perf is starting the traced process, all the events (apart from | |
1017 | * group members) have enable_on_exec=1 set, so don't spoil it by | |
1018 | * prematurely enabling them. | |
1019 | * | |
1020 | * XXX 'top' still doesn't start workloads like record, trace, but should, | |
1021 | * so leave the check here. | |
1022 | */ | |
1023 | if (!perf_target__none(&opts->target)) | |
1024 | perf_evlist__enable(top->evlist); | |
1025 | ||
2f01190a | 1026 | /* Wait for a minimal set of events before starting the snapshot */ |
1758af10 | 1027 | poll(top->evlist->pollfd, top->evlist->nr_fds, 100); |
2f01190a | 1028 | |
1758af10 | 1029 | perf_top__mmap_read(top); |
2f01190a | 1030 | |
c0443df1 | 1031 | if (pthread_create(&thread, NULL, (use_browser > 0 ? display_thread_tui : |
1758af10 | 1032 | display_thread), top)) { |
3780f488 | 1033 | ui__error("Could not create display thread.\n"); |
07800601 IM |
1034 | exit(-1); |
1035 | } | |
1036 | ||
1758af10 | 1037 | if (top->realtime_prio) { |
07800601 IM |
1038 | struct sched_param param; |
1039 | ||
1758af10 | 1040 | param.sched_priority = top->realtime_prio; |
07800601 | 1041 | if (sched_setscheduler(0, SCHED_FIFO, ¶m)) { |
3780f488 | 1042 | ui__error("Could not set realtime priority.\n"); |
07800601 IM |
1043 | exit(-1); |
1044 | } | |
1045 | } | |
1046 | ||
1047 | while (1) { | |
1758af10 | 1048 | u64 hits = top->samples; |
07800601 | 1049 | |
1758af10 | 1050 | perf_top__mmap_read(top); |
07800601 | 1051 | |
1758af10 ACM |
1052 | if (hits == top->samples) |
1053 | ret = poll(top->evlist->pollfd, top->evlist->nr_fds, 100); | |
07800601 IM |
1054 | } |
1055 | ||
19d4ac3c | 1056 | out_delete: |
1758af10 ACM |
1057 | perf_session__delete(top->session); |
1058 | top->session = NULL; | |
19d4ac3c ACM |
1059 | |
1060 | return 0; | |
1061 | } | |
1062 | ||
1063 | static int | |
1758af10 | 1064 | parse_callchain_opt(const struct option *opt, const char *arg, int unset) |
19d4ac3c | 1065 | { |
19d4ac3c ACM |
1066 | /* |
1067 | * --no-call-graph | |
1068 | */ | |
2376c67a | 1069 | if (unset) |
19d4ac3c | 1070 | return 0; |
19d4ac3c ACM |
1071 | |
1072 | symbol_conf.use_callchain = true; | |
1073 | ||
2376c67a | 1074 | return record_parse_callchain_opt(opt, arg, unset); |
07800601 | 1075 | } |
b456bae0 | 1076 | |
1d037ca1 | 1077 | int cmd_top(int argc, const char **argv, const char *prefix __maybe_unused) |
1758af10 | 1078 | { |
16ad2ffb NK |
1079 | int status; |
1080 | char errbuf[BUFSIZ]; | |
1758af10 ACM |
1081 | struct perf_top top = { |
1082 | .count_filter = 5, | |
1083 | .delay_secs = 2, | |
2376c67a ACM |
1084 | .record_opts = { |
1085 | .mmap_pages = UINT_MAX, | |
1086 | .user_freq = UINT_MAX, | |
1087 | .user_interval = ULLONG_MAX, | |
1088 | .freq = 4000, /* 4 KHz */ | |
1089 | .target = { | |
1090 | .uses_mmap = true, | |
1091 | }, | |
d1cb9fce | 1092 | }, |
2376c67a | 1093 | .sym_pcnt_filter = 5, |
1758af10 | 1094 | }; |
2376c67a ACM |
1095 | struct perf_record_opts *opts = &top.record_opts; |
1096 | struct perf_target *target = &opts->target; | |
1758af10 | 1097 | const struct option options[] = { |
8c3e10eb | 1098 | OPT_CALLBACK('e', "event", &top.evlist, "event", |
86847b62 | 1099 | "event selector. use 'perf list' to list available events", |
f120f9d5 | 1100 | parse_events_option), |
2376c67a ACM |
1101 | OPT_U64('c', "count", &opts->user_interval, "event period to sample"), |
1102 | OPT_STRING('p', "pid", &target->pid, "pid", | |
d6d901c2 | 1103 | "profile events on existing process id"), |
2376c67a | 1104 | OPT_STRING('t', "tid", &target->tid, "tid", |
d6d901c2 | 1105 | "profile events on existing thread id"), |
2376c67a | 1106 | OPT_BOOLEAN('a', "all-cpus", &target->system_wide, |
b456bae0 | 1107 | "system-wide collection from all CPUs"), |
2376c67a | 1108 | OPT_STRING('C', "cpu", &target->cpu_list, "cpu", |
c45c6ea2 | 1109 | "list of cpus to monitor"), |
b32d133a ACM |
1110 | OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name, |
1111 | "file", "vmlinux pathname"), | |
8c3e10eb | 1112 | OPT_BOOLEAN('K', "hide_kernel_symbols", &top.hide_kernel_symbols, |
8ffcda17 | 1113 | "hide kernel symbols"), |
2376c67a ACM |
1114 | OPT_UINTEGER('m', "mmap-pages", &opts->mmap_pages, |
1115 | "number of mmap data pages"), | |
1758af10 | 1116 | OPT_INTEGER('r', "realtime", &top.realtime_prio, |
b456bae0 | 1117 | "collect data with this RT SCHED_FIFO priority"), |
8c3e10eb | 1118 | OPT_INTEGER('d', "delay", &top.delay_secs, |
b456bae0 | 1119 | "number of seconds to delay between refreshes"), |
1758af10 | 1120 | OPT_BOOLEAN('D', "dump-symtab", &top.dump_symtab, |
b456bae0 | 1121 | "dump the symbol table used for profiling"), |
8c3e10eb | 1122 | OPT_INTEGER('f', "count-filter", &top.count_filter, |
b456bae0 | 1123 | "only display functions with more events than this"), |
2376c67a | 1124 | OPT_BOOLEAN('g', "group", &opts->group, |
b456bae0 | 1125 | "put the counters into a counter group"), |
2376c67a ACM |
1126 | OPT_BOOLEAN('i', "no-inherit", &opts->no_inherit, |
1127 | "child tasks do not inherit counters"), | |
1758af10 | 1128 | OPT_STRING(0, "sym-annotate", &top.sym_filter, "symbol name", |
6cff0e8d | 1129 | "symbol to annotate"), |
2376c67a ACM |
1130 | OPT_BOOLEAN('z', "zero", &top.zero, "zero history across updates"), |
1131 | OPT_UINTEGER('F', "freq", &opts->user_freq, "profile at this frequency"), | |
8c3e10eb | 1132 | OPT_INTEGER('E', "entries", &top.print_entries, |
6e53cdf1 | 1133 | "display this many functions"), |
8c3e10eb | 1134 | OPT_BOOLEAN('U', "hide_user_symbols", &top.hide_user_symbols, |
8ffcda17 | 1135 | "hide user symbols"), |
1758af10 ACM |
1136 | OPT_BOOLEAN(0, "tui", &top.use_tui, "Use the TUI interface"), |
1137 | OPT_BOOLEAN(0, "stdio", &top.use_stdio, "Use the stdio interface"), | |
c0555642 | 1138 | OPT_INCR('v', "verbose", &verbose, |
3da297a6 | 1139 | "be more verbose (show counter open errors, etc)"), |
ab81f3fd ACM |
1140 | OPT_STRING('s', "sort", &sort_order, "key[,key2...]", |
1141 | "sort by key(s): pid, comm, dso, symbol, parent"), | |
1142 | OPT_BOOLEAN('n', "show-nr-samples", &symbol_conf.show_nr_samples, | |
1143 | "Show a column with the number of samples"), | |
2376c67a ACM |
1144 | OPT_CALLBACK_DEFAULT('G', "call-graph", &top.record_opts, |
1145 | "mode[,dump_size]", record_callchain_help, | |
1146 | &parse_callchain_opt, "fp"), | |
ab81f3fd ACM |
1147 | OPT_BOOLEAN(0, "show-total-period", &symbol_conf.show_total_period, |
1148 | "Show a column with the sum of periods"), | |
1149 | OPT_STRING(0, "dsos", &symbol_conf.dso_list_str, "dso[,dso...]", | |
1150 | "only consider symbols in these dsos"), | |
1151 | OPT_STRING(0, "comms", &symbol_conf.comm_list_str, "comm[,comm...]", | |
1152 | "only consider symbols in these comms"), | |
1153 | OPT_STRING(0, "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]", | |
1154 | "only consider these symbols"), | |
64c6f0c7 ACM |
1155 | OPT_BOOLEAN(0, "source", &symbol_conf.annotate_src, |
1156 | "Interleave source code with assembly code (default)"), | |
1157 | OPT_BOOLEAN(0, "asm-raw", &symbol_conf.annotate_asm_raw, | |
1158 | "Display raw encoding of assembly instructions (default)"), | |
1159 | OPT_STRING('M', "disassembler-style", &disassembler_style, "disassembler style", | |
1160 | "Specify disassembler style (e.g. -M intel for intel syntax)"), | |
2376c67a | 1161 | OPT_STRING('u', "uid", &target->uid_str, "user", "user to profile"), |
b456bae0 | 1162 | OPT_END() |
1758af10 | 1163 | }; |
be772842 ACM |
1164 | const char * const top_usage[] = { |
1165 | "perf top [<options>]", | |
1166 | NULL | |
1167 | }; | |
b456bae0 | 1168 | |
8c3e10eb ACM |
1169 | top.evlist = perf_evlist__new(NULL, NULL); |
1170 | if (top.evlist == NULL) | |
361c99a6 ACM |
1171 | return -ENOMEM; |
1172 | ||
ab81f3fd | 1173 | symbol_conf.exclude_other = false; |
b456bae0 | 1174 | |
b456bae0 IM |
1175 | argc = parse_options(argc, argv, options, top_usage, 0); |
1176 | if (argc) | |
1177 | usage_with_options(top_usage, options); | |
1178 | ||
ab81f3fd ACM |
1179 | if (sort_order == default_sort_order) |
1180 | sort_order = "dso,symbol"; | |
1181 | ||
1182 | setup_sorting(top_usage, options); | |
1183 | ||
1758af10 | 1184 | if (top.use_stdio) |
c0443df1 | 1185 | use_browser = 0; |
1758af10 | 1186 | else if (top.use_tui) |
c0443df1 ACM |
1187 | use_browser = 1; |
1188 | ||
1189 | setup_browser(false); | |
1190 | ||
2376c67a | 1191 | status = perf_target__validate(target); |
16ad2ffb | 1192 | if (status) { |
2376c67a | 1193 | perf_target__strerror(target, status, errbuf, BUFSIZ); |
16ad2ffb NK |
1194 | ui__warning("%s", errbuf); |
1195 | } | |
1196 | ||
2376c67a | 1197 | status = perf_target__parse_uid(target); |
16ad2ffb NK |
1198 | if (status) { |
1199 | int saved_errno = errno; | |
4bd0f2d2 | 1200 | |
2376c67a | 1201 | perf_target__strerror(target, status, errbuf, BUFSIZ); |
3780f488 | 1202 | ui__error("%s", errbuf); |
16ad2ffb NK |
1203 | |
1204 | status = -saved_errno; | |
0d37aa34 | 1205 | goto out_delete_evlist; |
16ad2ffb | 1206 | } |
0d37aa34 | 1207 | |
2376c67a ACM |
1208 | if (perf_target__none(target)) |
1209 | target->system_wide = true; | |
10b47d54 | 1210 | |
2376c67a | 1211 | if (perf_evlist__create_maps(top.evlist, target) < 0) |
7e2ed097 ACM |
1212 | usage_with_options(top_usage, options); |
1213 | ||
8c3e10eb ACM |
1214 | if (!top.evlist->nr_entries && |
1215 | perf_evlist__add_default(top.evlist) < 0) { | |
3780f488 | 1216 | ui__error("Not enough memory for event selector list\n"); |
69aad6f1 ACM |
1217 | return -ENOMEM; |
1218 | } | |
5a8e5a30 | 1219 | |
d04b35f8 ACM |
1220 | symbol_conf.nr_events = top.evlist->nr_entries; |
1221 | ||
8c3e10eb ACM |
1222 | if (top.delay_secs < 1) |
1223 | top.delay_secs = 1; | |
2f335a02 | 1224 | |
2376c67a ACM |
1225 | if (opts->user_interval != ULLONG_MAX) |
1226 | opts->default_interval = opts->user_interval; | |
1227 | if (opts->user_freq != UINT_MAX) | |
1228 | opts->freq = opts->user_freq; | |
1229 | ||
7e4ff9e3 MG |
1230 | /* |
1231 | * User specified count overrides default frequency. | |
1232 | */ | |
2376c67a ACM |
1233 | if (opts->default_interval) |
1234 | opts->freq = 0; | |
1235 | else if (opts->freq) { | |
1236 | opts->default_interval = opts->freq; | |
7e4ff9e3 | 1237 | } else { |
3780f488 | 1238 | ui__error("frequency and count are zero, aborting\n"); |
2376c67a ACM |
1239 | status = -EINVAL; |
1240 | goto out_delete_evlist; | |
69aad6f1 ACM |
1241 | } |
1242 | ||
0c21f736 | 1243 | top.sym_evsel = perf_evlist__first(top.evlist); |
cc841580 | 1244 | |
ab81f3fd | 1245 | symbol_conf.priv_size = sizeof(struct annotation); |
69aad6f1 ACM |
1246 | |
1247 | symbol_conf.try_vmlinux_path = (symbol_conf.vmlinux_name == NULL); | |
1248 | if (symbol__init() < 0) | |
1249 | return -1; | |
1250 | ||
ab81f3fd ACM |
1251 | sort_entry__setup_elide(&sort_dso, symbol_conf.dso_list, "dso", stdout); |
1252 | sort_entry__setup_elide(&sort_comm, symbol_conf.comm_list, "comm", stdout); | |
1253 | sort_entry__setup_elide(&sort_sym, symbol_conf.sym_list, "symbol", stdout); | |
1254 | ||
19d4ac3c ACM |
1255 | /* |
1256 | * Avoid annotation data structures overhead when symbols aren't on the | |
1257 | * sort list. | |
1258 | */ | |
1758af10 | 1259 | top.sort_has_symbols = sort_sym.list.next != NULL; |
19d4ac3c | 1260 | |
1758af10 | 1261 | get_term_dimensions(&top.winsize); |
8c3e10eb | 1262 | if (top.print_entries == 0) { |
1758af10 ACM |
1263 | struct sigaction act = { |
1264 | .sa_sigaction = perf_top__sig_winch, | |
1265 | .sa_flags = SA_SIGINFO, | |
1266 | }; | |
1267 | perf_top__update_print_entries(&top); | |
1268 | sigaction(SIGWINCH, &act, NULL); | |
3b6ed988 ACM |
1269 | } |
1270 | ||
1758af10 | 1271 | status = __cmd_top(&top); |
806fb630 | 1272 | |
0d37aa34 | 1273 | out_delete_evlist: |
8c3e10eb | 1274 | perf_evlist__delete(top.evlist); |
69aad6f1 ACM |
1275 | |
1276 | return status; | |
b456bae0 | 1277 | } |