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" |
6b118e92 | 41 | #include "util/intlist.h" |
07800601 | 42 | |
8f28827a FW |
43 | #include "util/debug.h" |
44 | ||
07800601 | 45 | #include <assert.h> |
31d68e7b | 46 | #include <elf.h> |
07800601 | 47 | #include <fcntl.h> |
0e9b20b8 | 48 | |
07800601 | 49 | #include <stdio.h> |
923c42c1 MG |
50 | #include <termios.h> |
51 | #include <unistd.h> | |
9486aa38 | 52 | #include <inttypes.h> |
0e9b20b8 | 53 | |
07800601 | 54 | #include <errno.h> |
07800601 IM |
55 | #include <time.h> |
56 | #include <sched.h> | |
07800601 IM |
57 | |
58 | #include <sys/syscall.h> | |
59 | #include <sys/ioctl.h> | |
60 | #include <sys/poll.h> | |
61 | #include <sys/prctl.h> | |
62 | #include <sys/wait.h> | |
63 | #include <sys/uio.h> | |
31d68e7b | 64 | #include <sys/utsname.h> |
07800601 IM |
65 | #include <sys/mman.h> |
66 | ||
67 | #include <linux/unistd.h> | |
68 | #include <linux/types.h> | |
69 | ||
895f0edc | 70 | void get_term_dimensions(struct winsize *ws) |
3b6ed988 | 71 | { |
13cc5079 ACM |
72 | char *s = getenv("LINES"); |
73 | ||
74 | if (s != NULL) { | |
75 | ws->ws_row = atoi(s); | |
76 | s = getenv("COLUMNS"); | |
77 | if (s != NULL) { | |
78 | ws->ws_col = atoi(s); | |
79 | if (ws->ws_row && ws->ws_col) | |
80 | return; | |
81 | } | |
3b6ed988 | 82 | } |
13cc5079 ACM |
83 | #ifdef TIOCGWINSZ |
84 | if (ioctl(1, TIOCGWINSZ, ws) == 0 && | |
85 | ws->ws_row && ws->ws_col) | |
86 | return; | |
3b6ed988 | 87 | #endif |
13cc5079 ACM |
88 | ws->ws_row = 25; |
89 | ws->ws_col = 80; | |
3b6ed988 ACM |
90 | } |
91 | ||
1758af10 | 92 | static void perf_top__update_print_entries(struct perf_top *top) |
3b6ed988 | 93 | { |
1758af10 ACM |
94 | if (top->print_entries > 9) |
95 | top->print_entries -= 9; | |
3b6ed988 ACM |
96 | } |
97 | ||
1d037ca1 IT |
98 | static void perf_top__sig_winch(int sig __maybe_unused, |
99 | siginfo_t *info __maybe_unused, void *arg) | |
3b6ed988 | 100 | { |
1758af10 ACM |
101 | struct perf_top *top = arg; |
102 | ||
103 | get_term_dimensions(&top->winsize); | |
509605db SE |
104 | if (!top->print_entries |
105 | || (top->print_entries+4) > top->winsize.ws_row) { | |
106 | top->print_entries = top->winsize.ws_row; | |
107 | } else { | |
108 | top->print_entries += 4; | |
109 | top->winsize.ws_row = top->print_entries; | |
110 | } | |
1758af10 | 111 | perf_top__update_print_entries(top); |
3b6ed988 ACM |
112 | } |
113 | ||
1758af10 | 114 | static int perf_top__parse_source(struct perf_top *top, struct hist_entry *he) |
923c42c1 MG |
115 | { |
116 | struct symbol *sym; | |
ce6f4fab | 117 | struct annotation *notes; |
439d473b | 118 | struct map *map; |
36532461 | 119 | int err = -1; |
923c42c1 | 120 | |
ab81f3fd | 121 | if (!he || !he->ms.sym) |
b0a9ab62 ACM |
122 | return -1; |
123 | ||
ab81f3fd ACM |
124 | sym = he->ms.sym; |
125 | map = he->ms.map; | |
b0a9ab62 ACM |
126 | |
127 | /* | |
128 | * We can't annotate with just /proc/kallsyms | |
129 | */ | |
44f24cb3 | 130 | if (map->dso->symtab_type == DSO_BINARY_TYPE__KALLSYMS) { |
ce6f4fab ACM |
131 | pr_err("Can't annotate %s: No vmlinux file was found in the " |
132 | "path\n", sym->name); | |
133 | sleep(1); | |
b0a9ab62 | 134 | return -1; |
b269876c ACM |
135 | } |
136 | ||
ce6f4fab ACM |
137 | notes = symbol__annotation(sym); |
138 | if (notes->src != NULL) { | |
139 | pthread_mutex_lock(¬es->lock); | |
923c42c1 MG |
140 | goto out_assign; |
141 | } | |
923c42c1 | 142 | |
ce6f4fab | 143 | pthread_mutex_lock(¬es->lock); |
923c42c1 | 144 | |
d04b35f8 | 145 | if (symbol__alloc_hist(sym) < 0) { |
c97cf422 | 146 | pthread_mutex_unlock(¬es->lock); |
36532461 ACM |
147 | pr_err("Not enough memory for annotating '%s' symbol!\n", |
148 | sym->name); | |
ce6f4fab | 149 | sleep(1); |
c97cf422 | 150 | return err; |
923c42c1 | 151 | } |
36532461 | 152 | |
ab81f3fd | 153 | err = symbol__annotate(sym, map, 0); |
36532461 | 154 | if (err == 0) { |
923c42c1 | 155 | out_assign: |
1758af10 | 156 | top->sym_filter_entry = he; |
36532461 | 157 | } |
c97cf422 | 158 | |
ce6f4fab | 159 | pthread_mutex_unlock(¬es->lock); |
36532461 | 160 | return err; |
923c42c1 MG |
161 | } |
162 | ||
ab81f3fd | 163 | static void __zero_source_counters(struct hist_entry *he) |
923c42c1 | 164 | { |
ab81f3fd | 165 | struct symbol *sym = he->ms.sym; |
36532461 | 166 | symbol__annotate_zero_histograms(sym); |
923c42c1 MG |
167 | } |
168 | ||
31d68e7b ACM |
169 | static void ui__warn_map_erange(struct map *map, struct symbol *sym, u64 ip) |
170 | { | |
171 | struct utsname uts; | |
172 | int err = uname(&uts); | |
173 | ||
174 | ui__warning("Out of bounds address found:\n\n" | |
175 | "Addr: %" PRIx64 "\n" | |
176 | "DSO: %s %c\n" | |
177 | "Map: %" PRIx64 "-%" PRIx64 "\n" | |
178 | "Symbol: %" PRIx64 "-%" PRIx64 " %c %s\n" | |
179 | "Arch: %s\n" | |
180 | "Kernel: %s\n" | |
181 | "Tools: %s\n\n" | |
182 | "Not all samples will be on the annotation output.\n\n" | |
183 | "Please report to linux-kernel@vger.kernel.org\n", | |
184 | ip, map->dso->long_name, dso__symtab_origin(map->dso), | |
185 | map->start, map->end, sym->start, sym->end, | |
186 | sym->binding == STB_GLOBAL ? 'g' : | |
187 | sym->binding == STB_LOCAL ? 'l' : 'w', sym->name, | |
188 | err ? "[unknown]" : uts.machine, | |
189 | err ? "[unknown]" : uts.release, perf_version_string); | |
190 | if (use_browser <= 0) | |
191 | sleep(5); | |
192 | ||
193 | map->erange_warned = true; | |
194 | } | |
195 | ||
1758af10 ACM |
196 | static void perf_top__record_precise_ip(struct perf_top *top, |
197 | struct hist_entry *he, | |
198 | int counter, u64 ip) | |
923c42c1 | 199 | { |
ce6f4fab ACM |
200 | struct annotation *notes; |
201 | struct symbol *sym; | |
31d68e7b | 202 | int err; |
ce6f4fab | 203 | |
ab81f3fd | 204 | if (he == NULL || he->ms.sym == NULL || |
1758af10 ACM |
205 | ((top->sym_filter_entry == NULL || |
206 | top->sym_filter_entry->ms.sym != he->ms.sym) && use_browser != 1)) | |
923c42c1 MG |
207 | return; |
208 | ||
ab81f3fd | 209 | sym = he->ms.sym; |
ce6f4fab ACM |
210 | notes = symbol__annotation(sym); |
211 | ||
212 | if (pthread_mutex_trylock(¬es->lock)) | |
923c42c1 MG |
213 | return; |
214 | ||
d04b35f8 | 215 | if (notes->src == NULL && symbol__alloc_hist(sym) < 0) { |
ab81f3fd ACM |
216 | pthread_mutex_unlock(¬es->lock); |
217 | pr_err("Not enough memory for annotating '%s' symbol!\n", | |
218 | sym->name); | |
219 | sleep(1); | |
220 | return; | |
221 | } | |
222 | ||
223 | ip = he->ms.map->map_ip(he->ms.map, ip); | |
31d68e7b | 224 | err = symbol__inc_addr_samples(sym, he->ms.map, counter, ip); |
c7ad21af | 225 | |
ce6f4fab | 226 | pthread_mutex_unlock(¬es->lock); |
31d68e7b ACM |
227 | |
228 | if (err == -ERANGE && !he->ms.map->erange_warned) | |
229 | ui__warn_map_erange(he->ms.map, sym, ip); | |
923c42c1 MG |
230 | } |
231 | ||
1758af10 | 232 | static void perf_top__show_details(struct perf_top *top) |
923c42c1 | 233 | { |
1758af10 | 234 | struct hist_entry *he = top->sym_filter_entry; |
ce6f4fab | 235 | struct annotation *notes; |
923c42c1 | 236 | struct symbol *symbol; |
36532461 | 237 | int more; |
923c42c1 | 238 | |
ab81f3fd | 239 | if (!he) |
923c42c1 MG |
240 | return; |
241 | ||
ab81f3fd | 242 | symbol = he->ms.sym; |
ce6f4fab ACM |
243 | notes = symbol__annotation(symbol); |
244 | ||
245 | pthread_mutex_lock(¬es->lock); | |
246 | ||
247 | if (notes->src == NULL) | |
248 | goto out_unlock; | |
923c42c1 | 249 | |
7289f83c | 250 | printf("Showing %s for %s\n", perf_evsel__name(top->sym_evsel), symbol->name); |
1758af10 | 251 | printf(" Events Pcnt (>=%d%%)\n", top->sym_pcnt_filter); |
923c42c1 | 252 | |
1758af10 ACM |
253 | more = symbol__annotate_printf(symbol, he->ms.map, top->sym_evsel->idx, |
254 | 0, top->sym_pcnt_filter, top->print_entries, 4); | |
255 | if (top->zero) | |
256 | symbol__annotate_zero_histogram(symbol, top->sym_evsel->idx); | |
36532461 | 257 | else |
1758af10 | 258 | symbol__annotate_decay_histogram(symbol, top->sym_evsel->idx); |
36532461 | 259 | if (more != 0) |
923c42c1 | 260 | printf("%d lines not displayed, maybe increase display entries [e]\n", more); |
ce6f4fab ACM |
261 | out_unlock: |
262 | pthread_mutex_unlock(¬es->lock); | |
923c42c1 | 263 | } |
07800601 | 264 | |
07800601 IM |
265 | static const char CONSOLE_CLEAR[] = "\e[H\e[2J"; |
266 | ||
743eb868 ACM |
267 | static struct hist_entry *perf_evsel__add_hist_entry(struct perf_evsel *evsel, |
268 | struct addr_location *al, | |
269 | struct perf_sample *sample) | |
de04687f | 270 | { |
ab81f3fd ACM |
271 | struct hist_entry *he; |
272 | ||
273 | he = __hists__add_entry(&evsel->hists, al, NULL, sample->period); | |
274 | if (he == NULL) | |
275 | return NULL; | |
276 | ||
ab81f3fd ACM |
277 | hists__inc_nr_events(&evsel->hists, PERF_RECORD_SAMPLE); |
278 | return he; | |
de04687f | 279 | } |
07800601 | 280 | |
1758af10 | 281 | static void perf_top__print_sym_table(struct perf_top *top) |
07800601 | 282 | { |
8c3e10eb ACM |
283 | char bf[160]; |
284 | int printed = 0; | |
1758af10 | 285 | const int win_width = top->winsize.ws_col - 1; |
d94b9430 | 286 | |
0f5486b5 | 287 | puts(CONSOLE_CLEAR); |
07800601 | 288 | |
1758af10 | 289 | perf_top__header_snprintf(top, bf, sizeof(bf)); |
8c3e10eb | 290 | printf("%s\n", bf); |
07800601 | 291 | |
1758af10 | 292 | perf_top__reset_sample_counters(top); |
07800601 | 293 | |
1a105f74 | 294 | printf("%-*.*s\n", win_width, win_width, graph_dotted_line); |
07800601 | 295 | |
1758af10 ACM |
296 | if (top->sym_evsel->hists.stats.nr_lost_warned != |
297 | top->sym_evsel->hists.stats.nr_events[PERF_RECORD_LOST]) { | |
298 | top->sym_evsel->hists.stats.nr_lost_warned = | |
299 | top->sym_evsel->hists.stats.nr_events[PERF_RECORD_LOST]; | |
7b27509f ACM |
300 | color_fprintf(stdout, PERF_COLOR_RED, |
301 | "WARNING: LOST %d chunks, Check IO/CPU overload", | |
1758af10 | 302 | top->sym_evsel->hists.stats.nr_lost_warned); |
ab81f3fd | 303 | ++printed; |
93fc64f1 ACM |
304 | } |
305 | ||
1758af10 ACM |
306 | if (top->sym_filter_entry) { |
307 | perf_top__show_details(top); | |
923c42c1 MG |
308 | return; |
309 | } | |
310 | ||
1758af10 ACM |
311 | hists__collapse_resort_threaded(&top->sym_evsel->hists); |
312 | hists__output_resort_threaded(&top->sym_evsel->hists); | |
313 | hists__decay_entries_threaded(&top->sym_evsel->hists, | |
314 | top->hide_user_symbols, | |
315 | top->hide_kernel_symbols); | |
316 | hists__output_recalc_col_len(&top->sym_evsel->hists, | |
317 | top->winsize.ws_row - 3); | |
7cc017ed | 318 | putchar('\n'); |
1758af10 ACM |
319 | hists__fprintf(&top->sym_evsel->hists, NULL, false, false, |
320 | top->winsize.ws_row - 4 - printed, win_width, stdout); | |
07800601 IM |
321 | } |
322 | ||
923c42c1 MG |
323 | static void prompt_integer(int *target, const char *msg) |
324 | { | |
325 | char *buf = malloc(0), *p; | |
326 | size_t dummy = 0; | |
327 | int tmp; | |
328 | ||
329 | fprintf(stdout, "\n%s: ", msg); | |
330 | if (getline(&buf, &dummy, stdin) < 0) | |
331 | return; | |
332 | ||
333 | p = strchr(buf, '\n'); | |
334 | if (p) | |
335 | *p = 0; | |
336 | ||
337 | p = buf; | |
338 | while(*p) { | |
339 | if (!isdigit(*p)) | |
340 | goto out_free; | |
341 | p++; | |
342 | } | |
343 | tmp = strtoul(buf, NULL, 10); | |
344 | *target = tmp; | |
345 | out_free: | |
346 | free(buf); | |
347 | } | |
348 | ||
349 | static void prompt_percent(int *target, const char *msg) | |
350 | { | |
351 | int tmp = 0; | |
352 | ||
353 | prompt_integer(&tmp, msg); | |
354 | if (tmp >= 0 && tmp <= 100) | |
355 | *target = tmp; | |
356 | } | |
357 | ||
1758af10 | 358 | static void perf_top__prompt_symbol(struct perf_top *top, const char *msg) |
923c42c1 MG |
359 | { |
360 | char *buf = malloc(0), *p; | |
1758af10 | 361 | struct hist_entry *syme = top->sym_filter_entry, *n, *found = NULL; |
ab81f3fd | 362 | struct rb_node *next; |
923c42c1 MG |
363 | size_t dummy = 0; |
364 | ||
365 | /* zero counters of active symbol */ | |
366 | if (syme) { | |
923c42c1 | 367 | __zero_source_counters(syme); |
1758af10 | 368 | top->sym_filter_entry = NULL; |
923c42c1 MG |
369 | } |
370 | ||
371 | fprintf(stdout, "\n%s: ", msg); | |
372 | if (getline(&buf, &dummy, stdin) < 0) | |
373 | goto out_free; | |
374 | ||
375 | p = strchr(buf, '\n'); | |
376 | if (p) | |
377 | *p = 0; | |
378 | ||
1758af10 | 379 | next = rb_first(&top->sym_evsel->hists.entries); |
ab81f3fd ACM |
380 | while (next) { |
381 | n = rb_entry(next, struct hist_entry, rb_node); | |
382 | if (n->ms.sym && !strcmp(buf, n->ms.sym->name)) { | |
383 | found = n; | |
923c42c1 MG |
384 | break; |
385 | } | |
ab81f3fd | 386 | next = rb_next(&n->rb_node); |
923c42c1 MG |
387 | } |
388 | ||
389 | if (!found) { | |
66aeb6d5 | 390 | fprintf(stderr, "Sorry, %s is not active.\n", buf); |
923c42c1 | 391 | sleep(1); |
923c42c1 | 392 | } else |
1758af10 | 393 | perf_top__parse_source(top, found); |
923c42c1 MG |
394 | |
395 | out_free: | |
396 | free(buf); | |
397 | } | |
398 | ||
1758af10 | 399 | static void perf_top__print_mapped_keys(struct perf_top *top) |
923c42c1 | 400 | { |
091bd2e9 MG |
401 | char *name = NULL; |
402 | ||
1758af10 ACM |
403 | if (top->sym_filter_entry) { |
404 | struct symbol *sym = top->sym_filter_entry->ms.sym; | |
091bd2e9 MG |
405 | name = sym->name; |
406 | } | |
407 | ||
408 | fprintf(stdout, "\nMapped keys:\n"); | |
1758af10 ACM |
409 | fprintf(stdout, "\t[d] display refresh delay. \t(%d)\n", top->delay_secs); |
410 | fprintf(stdout, "\t[e] display entries (lines). \t(%d)\n", top->print_entries); | |
091bd2e9 | 411 | |
1758af10 | 412 | if (top->evlist->nr_entries > 1) |
7289f83c | 413 | fprintf(stdout, "\t[E] active event counter. \t(%s)\n", perf_evsel__name(top->sym_evsel)); |
091bd2e9 | 414 | |
1758af10 | 415 | fprintf(stdout, "\t[f] profile display filter (count). \t(%d)\n", top->count_filter); |
091bd2e9 | 416 | |
1758af10 | 417 | fprintf(stdout, "\t[F] annotate display filter (percent). \t(%d%%)\n", top->sym_pcnt_filter); |
6cff0e8d KS |
418 | fprintf(stdout, "\t[s] annotate symbol. \t(%s)\n", name?: "NULL"); |
419 | fprintf(stdout, "\t[S] stop annotation.\n"); | |
091bd2e9 | 420 | |
8ffcda17 | 421 | fprintf(stdout, |
1a72cfa6 | 422 | "\t[K] hide kernel_symbols symbols. \t(%s)\n", |
1758af10 | 423 | top->hide_kernel_symbols ? "yes" : "no"); |
8ffcda17 ACM |
424 | fprintf(stdout, |
425 | "\t[U] hide user symbols. \t(%s)\n", | |
1758af10 ACM |
426 | top->hide_user_symbols ? "yes" : "no"); |
427 | fprintf(stdout, "\t[z] toggle sample zeroing. \t(%d)\n", top->zero ? 1 : 0); | |
091bd2e9 MG |
428 | fprintf(stdout, "\t[qQ] quit.\n"); |
429 | } | |
430 | ||
1758af10 | 431 | static int perf_top__key_mapped(struct perf_top *top, int c) |
091bd2e9 MG |
432 | { |
433 | switch (c) { | |
434 | case 'd': | |
435 | case 'e': | |
436 | case 'f': | |
437 | case 'z': | |
438 | case 'q': | |
439 | case 'Q': | |
8ffcda17 ACM |
440 | case 'K': |
441 | case 'U': | |
6cff0e8d KS |
442 | case 'F': |
443 | case 's': | |
444 | case 'S': | |
091bd2e9 MG |
445 | return 1; |
446 | case 'E': | |
1758af10 | 447 | return top->evlist->nr_entries > 1 ? 1 : 0; |
83a0944f IM |
448 | default: |
449 | break; | |
091bd2e9 MG |
450 | } |
451 | ||
452 | return 0; | |
923c42c1 MG |
453 | } |
454 | ||
1758af10 | 455 | static void perf_top__handle_keypress(struct perf_top *top, int c) |
923c42c1 | 456 | { |
1758af10 | 457 | if (!perf_top__key_mapped(top, c)) { |
091bd2e9 MG |
458 | struct pollfd stdin_poll = { .fd = 0, .events = POLLIN }; |
459 | struct termios tc, save; | |
460 | ||
1758af10 | 461 | perf_top__print_mapped_keys(top); |
091bd2e9 MG |
462 | fprintf(stdout, "\nEnter selection, or unmapped key to continue: "); |
463 | fflush(stdout); | |
464 | ||
465 | tcgetattr(0, &save); | |
466 | tc = save; | |
467 | tc.c_lflag &= ~(ICANON | ECHO); | |
468 | tc.c_cc[VMIN] = 0; | |
469 | tc.c_cc[VTIME] = 0; | |
470 | tcsetattr(0, TCSANOW, &tc); | |
471 | ||
472 | poll(&stdin_poll, 1, -1); | |
473 | c = getc(stdin); | |
474 | ||
475 | tcsetattr(0, TCSAFLUSH, &save); | |
1758af10 | 476 | if (!perf_top__key_mapped(top, c)) |
091bd2e9 MG |
477 | return; |
478 | } | |
479 | ||
923c42c1 MG |
480 | switch (c) { |
481 | case 'd': | |
1758af10 ACM |
482 | prompt_integer(&top->delay_secs, "Enter display delay"); |
483 | if (top->delay_secs < 1) | |
484 | top->delay_secs = 1; | |
923c42c1 MG |
485 | break; |
486 | case 'e': | |
1758af10 ACM |
487 | prompt_integer(&top->print_entries, "Enter display entries (lines)"); |
488 | if (top->print_entries == 0) { | |
489 | struct sigaction act = { | |
490 | .sa_sigaction = perf_top__sig_winch, | |
491 | .sa_flags = SA_SIGINFO, | |
492 | }; | |
493 | perf_top__sig_winch(SIGWINCH, NULL, top); | |
494 | sigaction(SIGWINCH, &act, NULL); | |
509605db SE |
495 | } else { |
496 | perf_top__sig_winch(SIGWINCH, NULL, top); | |
3b6ed988 | 497 | signal(SIGWINCH, SIG_DFL); |
509605db | 498 | } |
923c42c1 MG |
499 | break; |
500 | case 'E': | |
1758af10 | 501 | if (top->evlist->nr_entries > 1) { |
ce2d17ca AN |
502 | /* Select 0 as the default event: */ |
503 | int counter = 0; | |
504 | ||
923c42c1 | 505 | fprintf(stderr, "\nAvailable events:"); |
69aad6f1 | 506 | |
1758af10 | 507 | list_for_each_entry(top->sym_evsel, &top->evlist->entries, node) |
7289f83c | 508 | fprintf(stderr, "\n\t%d %s", top->sym_evsel->idx, perf_evsel__name(top->sym_evsel)); |
923c42c1 | 509 | |
ec52d976 | 510 | prompt_integer(&counter, "Enter details event counter"); |
923c42c1 | 511 | |
1758af10 | 512 | if (counter >= top->evlist->nr_entries) { |
0c21f736 | 513 | top->sym_evsel = perf_evlist__first(top->evlist); |
7289f83c | 514 | fprintf(stderr, "Sorry, no such event, using %s.\n", perf_evsel__name(top->sym_evsel)); |
923c42c1 | 515 | sleep(1); |
69aad6f1 | 516 | break; |
923c42c1 | 517 | } |
1758af10 ACM |
518 | list_for_each_entry(top->sym_evsel, &top->evlist->entries, node) |
519 | if (top->sym_evsel->idx == counter) | |
69aad6f1 | 520 | break; |
ec52d976 | 521 | } else |
0c21f736 | 522 | top->sym_evsel = perf_evlist__first(top->evlist); |
923c42c1 MG |
523 | break; |
524 | case 'f': | |
1758af10 | 525 | prompt_integer(&top->count_filter, "Enter display event count filter"); |
923c42c1 MG |
526 | break; |
527 | case 'F': | |
1758af10 ACM |
528 | prompt_percent(&top->sym_pcnt_filter, |
529 | "Enter details display event filter (percent)"); | |
923c42c1 | 530 | break; |
8ffcda17 | 531 | case 'K': |
1758af10 | 532 | top->hide_kernel_symbols = !top->hide_kernel_symbols; |
8ffcda17 | 533 | break; |
923c42c1 MG |
534 | case 'q': |
535 | case 'Q': | |
536 | printf("exiting.\n"); | |
1758af10 ACM |
537 | if (top->dump_symtab) |
538 | perf_session__fprintf_dsos(top->session, stderr); | |
923c42c1 MG |
539 | exit(0); |
540 | case 's': | |
1758af10 | 541 | perf_top__prompt_symbol(top, "Enter details symbol"); |
923c42c1 MG |
542 | break; |
543 | case 'S': | |
1758af10 | 544 | if (!top->sym_filter_entry) |
923c42c1 MG |
545 | break; |
546 | else { | |
1758af10 | 547 | struct hist_entry *syme = top->sym_filter_entry; |
923c42c1 | 548 | |
1758af10 | 549 | top->sym_filter_entry = NULL; |
923c42c1 | 550 | __zero_source_counters(syme); |
923c42c1 MG |
551 | } |
552 | break; | |
8ffcda17 | 553 | case 'U': |
1758af10 | 554 | top->hide_user_symbols = !top->hide_user_symbols; |
8ffcda17 | 555 | break; |
923c42c1 | 556 | case 'z': |
1758af10 | 557 | top->zero = !top->zero; |
923c42c1 | 558 | break; |
83a0944f IM |
559 | default: |
560 | break; | |
923c42c1 MG |
561 | } |
562 | } | |
563 | ||
ab81f3fd ACM |
564 | static void perf_top__sort_new_samples(void *arg) |
565 | { | |
566 | struct perf_top *t = arg; | |
567 | perf_top__reset_sample_counters(t); | |
568 | ||
569 | if (t->evlist->selected != NULL) | |
570 | t->sym_evsel = t->evlist->selected; | |
571 | ||
572 | hists__collapse_resort_threaded(&t->sym_evsel->hists); | |
573 | hists__output_resort_threaded(&t->sym_evsel->hists); | |
b079d4e9 | 574 | hists__decay_entries_threaded(&t->sym_evsel->hists, |
1758af10 ACM |
575 | t->hide_user_symbols, |
576 | t->hide_kernel_symbols); | |
ab81f3fd ACM |
577 | } |
578 | ||
1758af10 | 579 | static void *display_thread_tui(void *arg) |
c0443df1 | 580 | { |
0d37aa34 | 581 | struct perf_evsel *pos; |
1758af10 | 582 | struct perf_top *top = arg; |
ab81f3fd ACM |
583 | const char *help = "For a higher level overview, try: perf top --sort comm,dso"; |
584 | ||
1758af10 | 585 | perf_top__sort_new_samples(top); |
0d37aa34 ACM |
586 | |
587 | /* | |
588 | * Initialize the uid_filter_str, in the future the TUI will allow | |
589 | * Zooming in/out UIDs. For now juse use whatever the user passed | |
590 | * via --uid. | |
591 | */ | |
592 | list_for_each_entry(pos, &top->evlist->entries, node) | |
fe9d18a7 | 593 | pos->hists.uid_filter_str = top->target.uid_str; |
0d37aa34 | 594 | |
1758af10 | 595 | perf_evlist__tui_browse_hists(top->evlist, help, |
ab81f3fd | 596 | perf_top__sort_new_samples, |
1758af10 | 597 | top, top->delay_secs); |
ab81f3fd | 598 | |
c0443df1 ACM |
599 | exit_browser(0); |
600 | exit(0); | |
601 | return NULL; | |
602 | } | |
603 | ||
1758af10 | 604 | static void *display_thread(void *arg) |
07800601 | 605 | { |
0f5486b5 | 606 | struct pollfd stdin_poll = { .fd = 0, .events = POLLIN }; |
923c42c1 | 607 | struct termios tc, save; |
1758af10 | 608 | struct perf_top *top = arg; |
923c42c1 MG |
609 | int delay_msecs, c; |
610 | ||
611 | tcgetattr(0, &save); | |
612 | tc = save; | |
613 | tc.c_lflag &= ~(ICANON | ECHO); | |
614 | tc.c_cc[VMIN] = 0; | |
615 | tc.c_cc[VTIME] = 0; | |
091bd2e9 | 616 | |
3af6e338 | 617 | pthread__unblock_sigwinch(); |
923c42c1 | 618 | repeat: |
1758af10 | 619 | delay_msecs = top->delay_secs * 1000; |
923c42c1 MG |
620 | tcsetattr(0, TCSANOW, &tc); |
621 | /* trash return*/ | |
622 | getc(stdin); | |
07800601 | 623 | |
3af6e338 | 624 | while (1) { |
1758af10 | 625 | perf_top__print_sym_table(top); |
3af6e338 ACM |
626 | /* |
627 | * Either timeout expired or we got an EINTR due to SIGWINCH, | |
628 | * refresh screen in both cases. | |
629 | */ | |
630 | switch (poll(&stdin_poll, 1, delay_msecs)) { | |
631 | case 0: | |
632 | continue; | |
633 | case -1: | |
634 | if (errno == EINTR) | |
635 | continue; | |
636 | /* Fall trhu */ | |
637 | default: | |
638 | goto process_hotkey; | |
639 | } | |
640 | } | |
641 | process_hotkey: | |
923c42c1 MG |
642 | c = getc(stdin); |
643 | tcsetattr(0, TCSAFLUSH, &save); | |
644 | ||
1758af10 | 645 | perf_top__handle_keypress(top, c); |
923c42c1 | 646 | goto repeat; |
07800601 IM |
647 | |
648 | return NULL; | |
649 | } | |
650 | ||
2ab52083 | 651 | /* Tag samples to be skipped. */ |
f37a291c | 652 | static const char *skip_symbols[] = { |
4bea8b5c | 653 | "intel_idle", |
2ab52083 | 654 | "default_idle", |
b0e8572f | 655 | "native_safe_halt", |
2ab52083 AB |
656 | "cpu_idle", |
657 | "enter_idle", | |
658 | "exit_idle", | |
659 | "mwait_idle", | |
59b90056 | 660 | "mwait_idle_with_hints", |
8357275b | 661 | "poll_idle", |
3a3393ef AB |
662 | "ppc64_runlatch_off", |
663 | "pseries_dedicated_idle_sleep", | |
2ab52083 AB |
664 | NULL |
665 | }; | |
666 | ||
1d037ca1 | 667 | static int symbol_filter(struct map *map __maybe_unused, struct symbol *sym) |
07800601 | 668 | { |
de04687f | 669 | const char *name = sym->name; |
2ab52083 | 670 | int i; |
de04687f | 671 | |
3a3393ef AB |
672 | /* |
673 | * ppc64 uses function descriptors and appends a '.' to the | |
674 | * start of every instruction address. Remove it. | |
675 | */ | |
676 | if (name[0] == '.') | |
677 | name++; | |
678 | ||
de04687f ACM |
679 | if (!strcmp(name, "_text") || |
680 | !strcmp(name, "_etext") || | |
681 | !strcmp(name, "_sinittext") || | |
682 | !strncmp("init_module", name, 11) || | |
683 | !strncmp("cleanup_module", name, 14) || | |
684 | strstr(name, "_text_start") || | |
685 | strstr(name, "_text_end")) | |
07800601 | 686 | return 1; |
07800601 | 687 | |
2ab52083 AB |
688 | for (i = 0; skip_symbols[i]; i++) { |
689 | if (!strcmp(skip_symbols[i], name)) { | |
171b3be9 | 690 | sym->ignore = true; |
2ab52083 AB |
691 | break; |
692 | } | |
693 | } | |
07800601 | 694 | |
07800601 IM |
695 | return 0; |
696 | } | |
697 | ||
1758af10 ACM |
698 | static void perf_event__process_sample(struct perf_tool *tool, |
699 | const union perf_event *event, | |
7b27509f | 700 | struct perf_evsel *evsel, |
8115d60c | 701 | struct perf_sample *sample, |
743eb868 | 702 | struct machine *machine) |
07800601 | 703 | { |
1758af10 | 704 | struct perf_top *top = container_of(tool, struct perf_top, tool); |
19d4ac3c | 705 | struct symbol *parent = NULL; |
8115d60c | 706 | u64 ip = event->ip.ip; |
1ed091c4 | 707 | struct addr_location al; |
19d4ac3c | 708 | int err; |
5b2bb75a | 709 | |
23346f21 | 710 | if (!machine && perf_guest) { |
6b118e92 DA |
711 | static struct intlist *seen; |
712 | ||
713 | if (!seen) | |
714 | seen = intlist__new(); | |
715 | ||
716 | if (!intlist__has_entry(seen, event->ip.pid)) { | |
717 | pr_err("Can't find guest [%d]'s kernel information\n", | |
718 | event->ip.pid); | |
719 | intlist__add(seen, event->ip.pid); | |
720 | } | |
a1645ce1 ZY |
721 | return; |
722 | } | |
723 | ||
0c095715 JR |
724 | if (!machine) { |
725 | pr_err("%u unprocessable samples recorded.", | |
726 | top->session->hists.stats.nr_unprocessable_samples++); | |
727 | return; | |
728 | } | |
729 | ||
8115d60c | 730 | if (event->header.misc & PERF_RECORD_MISC_EXACT_IP) |
1758af10 | 731 | top->exact_samples++; |
1676b8a0 | 732 | |
743eb868 | 733 | if (perf_event__preprocess_sample(event, machine, &al, sample, |
8115d60c | 734 | symbol_filter) < 0 || |
72b8fa17 | 735 | al.filtered) |
1ed091c4 | 736 | return; |
07800601 | 737 | |
1758af10 | 738 | if (!top->kptr_restrict_warned && |
5f6f5580 ACM |
739 | symbol_conf.kptr_restrict && |
740 | al.cpumode == PERF_RECORD_MISC_KERNEL) { | |
741 | ui__warning( | |
742 | "Kernel address maps (/proc/{kallsyms,modules}) are restricted.\n\n" | |
743 | "Check /proc/sys/kernel/kptr_restrict.\n\n" | |
744 | "Kernel%s samples will not be resolved.\n", | |
745 | !RB_EMPTY_ROOT(&al.map->dso->symbols[MAP__FUNCTION]) ? | |
746 | " modules" : ""); | |
747 | if (use_browser <= 0) | |
748 | sleep(5); | |
1758af10 | 749 | top->kptr_restrict_warned = true; |
5f6f5580 ACM |
750 | } |
751 | ||
72b8fa17 | 752 | if (al.sym == NULL) { |
e4a338d0 | 753 | const char *msg = "Kernel samples will not be resolved.\n"; |
72b8fa17 ACM |
754 | /* |
755 | * As we do lazy loading of symtabs we only will know if the | |
756 | * specified vmlinux file is invalid when we actually have a | |
757 | * hit in kernel space and then try to load it. So if we get | |
758 | * here and there are _no_ symbols in the DSO backing the | |
759 | * kernel map, bail out. | |
760 | * | |
761 | * We may never get here, for instance, if we use -K/ | |
762 | * --hide-kernel-symbols, even if the user specifies an | |
763 | * invalid --vmlinux ;-) | |
764 | */ | |
1758af10 | 765 | if (!top->kptr_restrict_warned && !top->vmlinux_warned && |
e4a338d0 | 766 | al.map == machine->vmlinux_maps[MAP__FUNCTION] && |
72b8fa17 | 767 | RB_EMPTY_ROOT(&al.map->dso->symbols[MAP__FUNCTION])) { |
e4a338d0 ACM |
768 | if (symbol_conf.vmlinux_name) { |
769 | ui__warning("The %s file can't be used.\n%s", | |
770 | symbol_conf.vmlinux_name, msg); | |
771 | } else { | |
772 | ui__warning("A vmlinux file was not found.\n%s", | |
773 | msg); | |
774 | } | |
775 | ||
776 | if (use_browser <= 0) | |
777 | sleep(5); | |
1758af10 | 778 | top->vmlinux_warned = true; |
72b8fa17 | 779 | } |
6cff0e8d KS |
780 | } |
781 | ||
ab81f3fd | 782 | if (al.sym == NULL || !al.sym->ignore) { |
ab81f3fd | 783 | struct hist_entry *he; |
70db7533 | 784 | |
19d4ac3c ACM |
785 | if ((sort__has_parent || symbol_conf.use_callchain) && |
786 | sample->callchain) { | |
71ad0f5e JO |
787 | err = machine__resolve_callchain(machine, evsel, |
788 | al.thread, sample, | |
789 | &parent); | |
790 | ||
19d4ac3c ACM |
791 | if (err) |
792 | return; | |
793 | } | |
794 | ||
743eb868 | 795 | he = perf_evsel__add_hist_entry(evsel, &al, sample); |
ab81f3fd ACM |
796 | if (he == NULL) { |
797 | pr_err("Problem incrementing symbol period, skipping event\n"); | |
798 | return; | |
5807806a | 799 | } |
ab81f3fd | 800 | |
19d4ac3c | 801 | if (symbol_conf.use_callchain) { |
47260645 | 802 | err = callchain_append(he->callchain, &callchain_cursor, |
19d4ac3c ACM |
803 | sample->period); |
804 | if (err) | |
805 | return; | |
806 | } | |
807 | ||
1758af10 ACM |
808 | if (top->sort_has_symbols) |
809 | perf_top__record_precise_ip(top, he, evsel->idx, ip); | |
5b2bb75a | 810 | } |
ab81f3fd ACM |
811 | |
812 | return; | |
07800601 IM |
813 | } |
814 | ||
1758af10 | 815 | static void perf_top__mmap_read_idx(struct perf_top *top, int idx) |
07800601 | 816 | { |
8d50e5b4 | 817 | struct perf_sample sample; |
7b27509f | 818 | struct perf_evsel *evsel; |
1758af10 | 819 | struct perf_session *session = top->session; |
8115d60c | 820 | union perf_event *event; |
743eb868 ACM |
821 | struct machine *machine; |
822 | u8 origin; | |
5538beca | 823 | int ret; |
07800601 | 824 | |
1758af10 | 825 | while ((event = perf_evlist__mmap_read(top->evlist, idx)) != NULL) { |
cb0b29e0 | 826 | ret = perf_evlist__parse_sample(top->evlist, event, &sample, false); |
5538beca FW |
827 | if (ret) { |
828 | pr_err("Can't parse sample, err = %d\n", ret); | |
829 | continue; | |
830 | } | |
04391deb | 831 | |
1758af10 | 832 | evsel = perf_evlist__id2evsel(session->evlist, sample.id); |
7b27509f ACM |
833 | assert(evsel != NULL); |
834 | ||
743eb868 ACM |
835 | origin = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; |
836 | ||
5b2bb75a | 837 | if (event->header.type == PERF_RECORD_SAMPLE) |
1758af10 | 838 | ++top->samples; |
743eb868 ACM |
839 | |
840 | switch (origin) { | |
841 | case PERF_RECORD_MISC_USER: | |
1758af10 ACM |
842 | ++top->us_samples; |
843 | if (top->hide_user_symbols) | |
743eb868 | 844 | continue; |
1758af10 | 845 | machine = perf_session__find_host_machine(session); |
743eb868 ACM |
846 | break; |
847 | case PERF_RECORD_MISC_KERNEL: | |
1758af10 ACM |
848 | ++top->kernel_samples; |
849 | if (top->hide_kernel_symbols) | |
743eb868 | 850 | continue; |
1758af10 | 851 | machine = perf_session__find_host_machine(session); |
743eb868 ACM |
852 | break; |
853 | case PERF_RECORD_MISC_GUEST_KERNEL: | |
1758af10 ACM |
854 | ++top->guest_kernel_samples; |
855 | machine = perf_session__find_machine(session, event->ip.pid); | |
743eb868 ACM |
856 | break; |
857 | case PERF_RECORD_MISC_GUEST_USER: | |
1758af10 | 858 | ++top->guest_us_samples; |
743eb868 ACM |
859 | /* |
860 | * TODO: we don't process guest user from host side | |
861 | * except simple counting. | |
862 | */ | |
863 | /* Fall thru */ | |
864 | default: | |
865 | continue; | |
866 | } | |
867 | ||
868 | ||
1758af10 ACM |
869 | if (event->header.type == PERF_RECORD_SAMPLE) { |
870 | perf_event__process_sample(&top->tool, event, evsel, | |
871 | &sample, machine); | |
872 | } else if (event->header.type < PERF_RECORD_MAX) { | |
7b27509f | 873 | hists__inc_nr_events(&evsel->hists, event->header.type); |
1758af10 | 874 | perf_event__process(&top->tool, event, &sample, machine); |
7b27509f | 875 | } else |
1758af10 | 876 | ++session->hists.stats.nr_unknown_events; |
07800601 | 877 | } |
07800601 IM |
878 | } |
879 | ||
1758af10 | 880 | static void perf_top__mmap_read(struct perf_top *top) |
2f01190a | 881 | { |
70db7533 ACM |
882 | int i; |
883 | ||
1758af10 ACM |
884 | for (i = 0; i < top->evlist->nr_mmaps; i++) |
885 | perf_top__mmap_read_idx(top, i); | |
2f01190a FW |
886 | } |
887 | ||
1758af10 | 888 | static void perf_top__start_counters(struct perf_top *top) |
72cb7013 | 889 | { |
6a4bb04c | 890 | struct perf_evsel *counter; |
1758af10 | 891 | struct perf_evlist *evlist = top->evlist; |
727ab04e | 892 | |
6a4bb04c | 893 | if (top->group) |
63dab225 | 894 | perf_evlist__set_leader(evlist); |
7e4ff9e3 | 895 | |
72cb7013 ACM |
896 | list_for_each_entry(counter, &evlist->entries, node) { |
897 | struct perf_event_attr *attr = &counter->attr; | |
716c69fe | 898 | |
72cb7013 ACM |
899 | attr->sample_type = PERF_SAMPLE_IP | PERF_SAMPLE_TID; |
900 | ||
1758af10 | 901 | if (top->freq) { |
72cb7013 ACM |
902 | attr->sample_type |= PERF_SAMPLE_PERIOD; |
903 | attr->freq = 1; | |
1758af10 | 904 | attr->sample_freq = top->freq; |
72cb7013 | 905 | } |
d6d901c2 | 906 | |
70db7533 ACM |
907 | if (evlist->nr_entries > 1) { |
908 | attr->sample_type |= PERF_SAMPLE_ID; | |
909 | attr->read_format |= PERF_FORMAT_ID; | |
910 | } | |
911 | ||
e40ee742 NK |
912 | if (perf_target__has_cpu(&top->target)) |
913 | attr->sample_type |= PERF_SAMPLE_CPU; | |
914 | ||
19d4ac3c ACM |
915 | if (symbol_conf.use_callchain) |
916 | attr->sample_type |= PERF_SAMPLE_CALLCHAIN; | |
917 | ||
72cb7013 | 918 | attr->mmap = 1; |
ab81f3fd | 919 | attr->comm = 1; |
1758af10 | 920 | attr->inherit = top->inherit; |
0c978128 ACM |
921 | fallback_missing_features: |
922 | if (top->exclude_guest_missing) | |
923 | attr->exclude_guest = attr->exclude_host = 0; | |
7b27509f | 924 | retry_sample_id: |
808e1226 | 925 | attr->sample_id_all = top->sample_id_all_missing ? 0 : 1; |
72cb7013 | 926 | try_again: |
1758af10 | 927 | if (perf_evsel__open(counter, top->evlist->cpus, |
6a4bb04c | 928 | top->evlist->threads) < 0) { |
d6d901c2 ZY |
929 | int err = errno; |
930 | ||
c286c419 | 931 | if (err == EPERM || err == EACCES) { |
b8631e6e | 932 | ui__error_paranoid(); |
c286c419 | 933 | goto out_err; |
0c978128 ACM |
934 | } else if (err == EINVAL) { |
935 | if (!top->exclude_guest_missing && | |
936 | (attr->exclude_guest || attr->exclude_host)) { | |
937 | pr_debug("Old kernel, cannot exclude " | |
938 | "guest or host samples.\n"); | |
939 | top->exclude_guest_missing = true; | |
940 | goto fallback_missing_features; | |
808e1226 | 941 | } else if (!top->sample_id_all_missing) { |
0c978128 ACM |
942 | /* |
943 | * Old kernel, no attr->sample_id_type_all field | |
944 | */ | |
808e1226 | 945 | top->sample_id_all_missing = true; |
0c978128 ACM |
946 | goto retry_sample_id; |
947 | } | |
c286c419 | 948 | } |
d6d901c2 ZY |
949 | /* |
950 | * If it's cycles then fall back to hrtimer | |
951 | * based cpu-clock-tick sw counter, which | |
952 | * is always available even if no PMU support: | |
953 | */ | |
1a31fc90 DA |
954 | if ((err == ENOENT || err == ENXIO) && |
955 | (attr->type == PERF_TYPE_HARDWARE) && | |
956 | (attr->config == PERF_COUNT_HW_CPU_CYCLES)) { | |
957 | ||
d6d901c2 | 958 | if (verbose) |
c286c419 ACM |
959 | ui__warning("Cycles event not supported,\n" |
960 | "trying to fall back to cpu-clock-ticks\n"); | |
d6d901c2 ZY |
961 | |
962 | attr->type = PERF_TYPE_SOFTWARE; | |
963 | attr->config = PERF_COUNT_SW_CPU_CLOCK; | |
40491eaa DA |
964 | if (counter->name) { |
965 | free(counter->name); | |
895d9766 | 966 | counter->name = NULL; |
40491eaa | 967 | } |
d6d901c2 ZY |
968 | goto try_again; |
969 | } | |
c286c419 | 970 | |
ca6a4258 | 971 | if (err == ENOENT) { |
3780f488 | 972 | ui__error("The %s event is not supported.\n", |
7289f83c | 973 | perf_evsel__name(counter)); |
ca6a4258 | 974 | goto out_err; |
cdce4459 | 975 | } else if (err == EMFILE) { |
3780f488 | 976 | ui__error("Too many events are opened.\n" |
cdce4459 NK |
977 | "Try again after reducing the number of events\n"); |
978 | goto out_err; | |
ca6a4258 DA |
979 | } |
980 | ||
3780f488 | 981 | ui__error("The sys_perf_event_open() syscall " |
c286c419 ACM |
982 | "returned with %d (%s). /bin/dmesg " |
983 | "may provide additional information.\n" | |
984 | "No CONFIG_PERF_EVENTS=y kernel support " | |
985 | "configured?\n", err, strerror(err)); | |
986 | goto out_err; | |
d6d901c2 | 987 | } |
716c69fe | 988 | } |
70db7533 | 989 | |
1758af10 | 990 | if (perf_evlist__mmap(evlist, top->mmap_pages, false) < 0) { |
3780f488 | 991 | ui__error("Failed to mmap with %d (%s)\n", |
c286c419 ACM |
992 | errno, strerror(errno)); |
993 | goto out_err; | |
994 | } | |
995 | ||
996 | return; | |
997 | ||
998 | out_err: | |
999 | exit_browser(0); | |
1000 | exit(0); | |
716c69fe IM |
1001 | } |
1002 | ||
1758af10 | 1003 | static int perf_top__setup_sample_type(struct perf_top *top) |
19d4ac3c | 1004 | { |
1758af10 | 1005 | if (!top->sort_has_symbols) { |
19d4ac3c | 1006 | if (symbol_conf.use_callchain) { |
3780f488 | 1007 | ui__error("Selected -g but \"sym\" not present in --sort/-s."); |
19d4ac3c ACM |
1008 | return -EINVAL; |
1009 | } | |
1758af10 | 1010 | } else if (!top->dont_use_callchains && callchain_param.mode != CHAIN_NONE) { |
19d4ac3c | 1011 | if (callchain_register_param(&callchain_param) < 0) { |
3780f488 | 1012 | ui__error("Can't register callchain params.\n"); |
19d4ac3c ACM |
1013 | return -EINVAL; |
1014 | } | |
1015 | } | |
1016 | ||
1017 | return 0; | |
1018 | } | |
1019 | ||
1758af10 | 1020 | static int __cmd_top(struct perf_top *top) |
716c69fe IM |
1021 | { |
1022 | pthread_t thread; | |
19d4ac3c | 1023 | int ret; |
d8f66248 | 1024 | /* |
b3165f41 ACM |
1025 | * FIXME: perf_session__new should allow passing a O_MMAP, so that all this |
1026 | * mmap reading, etc is encapsulated in it. Use O_WRONLY for now. | |
d8f66248 | 1027 | */ |
1758af10 ACM |
1028 | top->session = perf_session__new(NULL, O_WRONLY, false, false, NULL); |
1029 | if (top->session == NULL) | |
b3165f41 | 1030 | return -ENOMEM; |
07800601 | 1031 | |
1758af10 | 1032 | ret = perf_top__setup_sample_type(top); |
19d4ac3c ACM |
1033 | if (ret) |
1034 | goto out_delete; | |
1035 | ||
aa22dd49 | 1036 | if (perf_target__has_task(&top->target)) |
1758af10 | 1037 | perf_event__synthesize_thread_map(&top->tool, top->evlist->threads, |
743eb868 | 1038 | perf_event__process, |
1758af10 | 1039 | &top->session->host_machine); |
5b2bb75a | 1040 | else |
1758af10 ACM |
1041 | perf_event__synthesize_threads(&top->tool, perf_event__process, |
1042 | &top->session->host_machine); | |
1043 | perf_top__start_counters(top); | |
1044 | top->session->evlist = top->evlist; | |
7b56cce2 | 1045 | perf_session__set_id_hdr_size(top->session); |
07800601 | 1046 | |
2f01190a | 1047 | /* Wait for a minimal set of events before starting the snapshot */ |
1758af10 | 1048 | poll(top->evlist->pollfd, top->evlist->nr_fds, 100); |
2f01190a | 1049 | |
1758af10 | 1050 | perf_top__mmap_read(top); |
2f01190a | 1051 | |
c0443df1 | 1052 | if (pthread_create(&thread, NULL, (use_browser > 0 ? display_thread_tui : |
1758af10 | 1053 | display_thread), top)) { |
3780f488 | 1054 | ui__error("Could not create display thread.\n"); |
07800601 IM |
1055 | exit(-1); |
1056 | } | |
1057 | ||
1758af10 | 1058 | if (top->realtime_prio) { |
07800601 IM |
1059 | struct sched_param param; |
1060 | ||
1758af10 | 1061 | param.sched_priority = top->realtime_prio; |
07800601 | 1062 | if (sched_setscheduler(0, SCHED_FIFO, ¶m)) { |
3780f488 | 1063 | ui__error("Could not set realtime priority.\n"); |
07800601 IM |
1064 | exit(-1); |
1065 | } | |
1066 | } | |
1067 | ||
1068 | while (1) { | |
1758af10 | 1069 | u64 hits = top->samples; |
07800601 | 1070 | |
1758af10 | 1071 | perf_top__mmap_read(top); |
07800601 | 1072 | |
1758af10 ACM |
1073 | if (hits == top->samples) |
1074 | ret = poll(top->evlist->pollfd, top->evlist->nr_fds, 100); | |
07800601 IM |
1075 | } |
1076 | ||
19d4ac3c | 1077 | out_delete: |
1758af10 ACM |
1078 | perf_session__delete(top->session); |
1079 | top->session = NULL; | |
19d4ac3c ACM |
1080 | |
1081 | return 0; | |
1082 | } | |
1083 | ||
1084 | static int | |
1758af10 | 1085 | parse_callchain_opt(const struct option *opt, const char *arg, int unset) |
19d4ac3c | 1086 | { |
1758af10 | 1087 | struct perf_top *top = (struct perf_top *)opt->value; |
19d4ac3c ACM |
1088 | char *tok, *tok2; |
1089 | char *endptr; | |
1090 | ||
1091 | /* | |
1092 | * --no-call-graph | |
1093 | */ | |
1094 | if (unset) { | |
1758af10 | 1095 | top->dont_use_callchains = true; |
19d4ac3c ACM |
1096 | return 0; |
1097 | } | |
1098 | ||
1099 | symbol_conf.use_callchain = true; | |
1100 | ||
1101 | if (!arg) | |
1102 | return 0; | |
1103 | ||
1104 | tok = strtok((char *)arg, ","); | |
1105 | if (!tok) | |
1106 | return -1; | |
1107 | ||
1108 | /* get the output mode */ | |
1109 | if (!strncmp(tok, "graph", strlen(arg))) | |
1110 | callchain_param.mode = CHAIN_GRAPH_ABS; | |
1111 | ||
1112 | else if (!strncmp(tok, "flat", strlen(arg))) | |
1113 | callchain_param.mode = CHAIN_FLAT; | |
1114 | ||
1115 | else if (!strncmp(tok, "fractal", strlen(arg))) | |
1116 | callchain_param.mode = CHAIN_GRAPH_REL; | |
1117 | ||
1118 | else if (!strncmp(tok, "none", strlen(arg))) { | |
1119 | callchain_param.mode = CHAIN_NONE; | |
1120 | symbol_conf.use_callchain = false; | |
1121 | ||
1122 | return 0; | |
806fb630 | 1123 | } else |
19d4ac3c ACM |
1124 | return -1; |
1125 | ||
1126 | /* get the min percentage */ | |
1127 | tok = strtok(NULL, ","); | |
1128 | if (!tok) | |
1129 | goto setup; | |
1130 | ||
1131 | callchain_param.min_percent = strtod(tok, &endptr); | |
1132 | if (tok == endptr) | |
1133 | return -1; | |
1134 | ||
1135 | /* get the print limit */ | |
1136 | tok2 = strtok(NULL, ","); | |
1137 | if (!tok2) | |
1138 | goto setup; | |
1139 | ||
1140 | if (tok2[0] != 'c') { | |
1141 | callchain_param.print_limit = strtod(tok2, &endptr); | |
1142 | tok2 = strtok(NULL, ","); | |
1143 | if (!tok2) | |
1144 | goto setup; | |
1145 | } | |
1146 | ||
1147 | /* get the call chain order */ | |
1148 | if (!strcmp(tok2, "caller")) | |
1149 | callchain_param.order = ORDER_CALLER; | |
1150 | else if (!strcmp(tok2, "callee")) | |
1151 | callchain_param.order = ORDER_CALLEE; | |
1152 | else | |
1153 | return -1; | |
1154 | setup: | |
1155 | if (callchain_register_param(&callchain_param) < 0) { | |
1156 | fprintf(stderr, "Can't register callchain params\n"); | |
1157 | return -1; | |
1158 | } | |
07800601 IM |
1159 | return 0; |
1160 | } | |
b456bae0 IM |
1161 | |
1162 | static const char * const top_usage[] = { | |
1163 | "perf top [<options>]", | |
1164 | NULL | |
1165 | }; | |
1166 | ||
1d037ca1 | 1167 | int cmd_top(int argc, const char **argv, const char *prefix __maybe_unused) |
1758af10 ACM |
1168 | { |
1169 | struct perf_evsel *pos; | |
16ad2ffb NK |
1170 | int status; |
1171 | char errbuf[BUFSIZ]; | |
1758af10 ACM |
1172 | struct perf_top top = { |
1173 | .count_filter = 5, | |
1174 | .delay_secs = 2, | |
447a6013 | 1175 | .freq = 4000, /* 4 KHz */ |
1758af10 ACM |
1176 | .mmap_pages = 128, |
1177 | .sym_pcnt_filter = 5, | |
d1cb9fce NK |
1178 | .target = { |
1179 | .uses_mmap = true, | |
1180 | }, | |
1758af10 ACM |
1181 | }; |
1182 | char callchain_default_opt[] = "fractal,0.5,callee"; | |
1183 | const struct option options[] = { | |
8c3e10eb | 1184 | OPT_CALLBACK('e', "event", &top.evlist, "event", |
86847b62 | 1185 | "event selector. use 'perf list' to list available events", |
f120f9d5 | 1186 | parse_events_option), |
1758af10 | 1187 | OPT_INTEGER('c', "count", &top.default_interval, |
b456bae0 | 1188 | "event period to sample"), |
fe9d18a7 | 1189 | OPT_STRING('p', "pid", &top.target.pid, "pid", |
d6d901c2 | 1190 | "profile events on existing process id"), |
fe9d18a7 | 1191 | OPT_STRING('t', "tid", &top.target.tid, "tid", |
d6d901c2 | 1192 | "profile events on existing thread id"), |
fe9d18a7 | 1193 | OPT_BOOLEAN('a', "all-cpus", &top.target.system_wide, |
b456bae0 | 1194 | "system-wide collection from all CPUs"), |
fe9d18a7 | 1195 | OPT_STRING('C', "cpu", &top.target.cpu_list, "cpu", |
c45c6ea2 | 1196 | "list of cpus to monitor"), |
b32d133a ACM |
1197 | OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name, |
1198 | "file", "vmlinux pathname"), | |
8c3e10eb | 1199 | OPT_BOOLEAN('K', "hide_kernel_symbols", &top.hide_kernel_symbols, |
8ffcda17 | 1200 | "hide kernel symbols"), |
1758af10 ACM |
1201 | OPT_UINTEGER('m', "mmap-pages", &top.mmap_pages, "number of mmap data pages"), |
1202 | OPT_INTEGER('r', "realtime", &top.realtime_prio, | |
b456bae0 | 1203 | "collect data with this RT SCHED_FIFO priority"), |
8c3e10eb | 1204 | OPT_INTEGER('d', "delay", &top.delay_secs, |
b456bae0 | 1205 | "number of seconds to delay between refreshes"), |
1758af10 | 1206 | OPT_BOOLEAN('D', "dump-symtab", &top.dump_symtab, |
b456bae0 | 1207 | "dump the symbol table used for profiling"), |
8c3e10eb | 1208 | OPT_INTEGER('f', "count-filter", &top.count_filter, |
b456bae0 | 1209 | "only display functions with more events than this"), |
1758af10 | 1210 | OPT_BOOLEAN('g', "group", &top.group, |
b456bae0 | 1211 | "put the counters into a counter group"), |
1758af10 | 1212 | OPT_BOOLEAN('i', "inherit", &top.inherit, |
0fdc7e67 | 1213 | "child tasks inherit counters"), |
1758af10 | 1214 | OPT_STRING(0, "sym-annotate", &top.sym_filter, "symbol name", |
6cff0e8d | 1215 | "symbol to annotate"), |
8c3e10eb | 1216 | OPT_BOOLEAN('z', "zero", &top.zero, |
b456bae0 | 1217 | "zero history across updates"), |
8c3e10eb | 1218 | OPT_INTEGER('F', "freq", &top.freq, |
b456bae0 | 1219 | "profile at this frequency"), |
8c3e10eb | 1220 | OPT_INTEGER('E', "entries", &top.print_entries, |
6e53cdf1 | 1221 | "display this many functions"), |
8c3e10eb | 1222 | OPT_BOOLEAN('U', "hide_user_symbols", &top.hide_user_symbols, |
8ffcda17 | 1223 | "hide user symbols"), |
1758af10 ACM |
1224 | OPT_BOOLEAN(0, "tui", &top.use_tui, "Use the TUI interface"), |
1225 | OPT_BOOLEAN(0, "stdio", &top.use_stdio, "Use the stdio interface"), | |
c0555642 | 1226 | OPT_INCR('v', "verbose", &verbose, |
3da297a6 | 1227 | "be more verbose (show counter open errors, etc)"), |
ab81f3fd ACM |
1228 | OPT_STRING('s', "sort", &sort_order, "key[,key2...]", |
1229 | "sort by key(s): pid, comm, dso, symbol, parent"), | |
1230 | OPT_BOOLEAN('n', "show-nr-samples", &symbol_conf.show_nr_samples, | |
1231 | "Show a column with the number of samples"), | |
1758af10 | 1232 | OPT_CALLBACK_DEFAULT('G', "call-graph", &top, "output_type,min_percent, call_order", |
19d4ac3c ACM |
1233 | "Display callchains using output_type (graph, flat, fractal, or none), min percent threshold and callchain order. " |
1234 | "Default: fractal,0.5,callee", &parse_callchain_opt, | |
1235 | callchain_default_opt), | |
ab81f3fd ACM |
1236 | OPT_BOOLEAN(0, "show-total-period", &symbol_conf.show_total_period, |
1237 | "Show a column with the sum of periods"), | |
1238 | OPT_STRING(0, "dsos", &symbol_conf.dso_list_str, "dso[,dso...]", | |
1239 | "only consider symbols in these dsos"), | |
1240 | OPT_STRING(0, "comms", &symbol_conf.comm_list_str, "comm[,comm...]", | |
1241 | "only consider symbols in these comms"), | |
1242 | OPT_STRING(0, "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]", | |
1243 | "only consider these symbols"), | |
64c6f0c7 ACM |
1244 | OPT_BOOLEAN(0, "source", &symbol_conf.annotate_src, |
1245 | "Interleave source code with assembly code (default)"), | |
1246 | OPT_BOOLEAN(0, "asm-raw", &symbol_conf.annotate_asm_raw, | |
1247 | "Display raw encoding of assembly instructions (default)"), | |
1248 | OPT_STRING('M', "disassembler-style", &disassembler_style, "disassembler style", | |
1249 | "Specify disassembler style (e.g. -M intel for intel syntax)"), | |
fe9d18a7 | 1250 | OPT_STRING('u', "uid", &top.target.uid_str, "user", "user to profile"), |
b456bae0 | 1251 | OPT_END() |
1758af10 | 1252 | }; |
b456bae0 | 1253 | |
8c3e10eb ACM |
1254 | top.evlist = perf_evlist__new(NULL, NULL); |
1255 | if (top.evlist == NULL) | |
361c99a6 ACM |
1256 | return -ENOMEM; |
1257 | ||
ab81f3fd | 1258 | symbol_conf.exclude_other = false; |
b456bae0 | 1259 | |
b456bae0 IM |
1260 | argc = parse_options(argc, argv, options, top_usage, 0); |
1261 | if (argc) | |
1262 | usage_with_options(top_usage, options); | |
1263 | ||
ab81f3fd ACM |
1264 | if (sort_order == default_sort_order) |
1265 | sort_order = "dso,symbol"; | |
1266 | ||
1267 | setup_sorting(top_usage, options); | |
1268 | ||
1758af10 | 1269 | if (top.use_stdio) |
c0443df1 | 1270 | use_browser = 0; |
1758af10 | 1271 | else if (top.use_tui) |
c0443df1 ACM |
1272 | use_browser = 1; |
1273 | ||
1274 | setup_browser(false); | |
1275 | ||
16ad2ffb NK |
1276 | status = perf_target__validate(&top.target); |
1277 | if (status) { | |
1278 | perf_target__strerror(&top.target, status, errbuf, BUFSIZ); | |
1279 | ui__warning("%s", errbuf); | |
1280 | } | |
1281 | ||
1282 | status = perf_target__parse_uid(&top.target); | |
1283 | if (status) { | |
1284 | int saved_errno = errno; | |
4bd0f2d2 | 1285 | |
16ad2ffb | 1286 | perf_target__strerror(&top.target, status, errbuf, BUFSIZ); |
3780f488 | 1287 | ui__error("%s", errbuf); |
16ad2ffb NK |
1288 | |
1289 | status = -saved_errno; | |
0d37aa34 | 1290 | goto out_delete_evlist; |
16ad2ffb | 1291 | } |
0d37aa34 | 1292 | |
80eebd94 | 1293 | if (perf_target__none(&top.target)) |
10b47d54 ACM |
1294 | top.target.system_wide = true; |
1295 | ||
b809ac10 | 1296 | if (perf_evlist__create_maps(top.evlist, &top.target) < 0) |
7e2ed097 ACM |
1297 | usage_with_options(top_usage, options); |
1298 | ||
8c3e10eb ACM |
1299 | if (!top.evlist->nr_entries && |
1300 | perf_evlist__add_default(top.evlist) < 0) { | |
3780f488 | 1301 | ui__error("Not enough memory for event selector list\n"); |
69aad6f1 ACM |
1302 | return -ENOMEM; |
1303 | } | |
5a8e5a30 | 1304 | |
d04b35f8 ACM |
1305 | symbol_conf.nr_events = top.evlist->nr_entries; |
1306 | ||
8c3e10eb ACM |
1307 | if (top.delay_secs < 1) |
1308 | top.delay_secs = 1; | |
2f335a02 | 1309 | |
7e4ff9e3 MG |
1310 | /* |
1311 | * User specified count overrides default frequency. | |
1312 | */ | |
1758af10 | 1313 | if (top.default_interval) |
8c3e10eb ACM |
1314 | top.freq = 0; |
1315 | else if (top.freq) { | |
1758af10 | 1316 | top.default_interval = top.freq; |
7e4ff9e3 | 1317 | } else { |
3780f488 | 1318 | ui__error("frequency and count are zero, aborting\n"); |
7e4ff9e3 MG |
1319 | exit(EXIT_FAILURE); |
1320 | } | |
1321 | ||
8c3e10eb | 1322 | list_for_each_entry(pos, &top.evlist->entries, node) { |
69aad6f1 ACM |
1323 | /* |
1324 | * Fill in the ones not specifically initialized via -c: | |
1325 | */ | |
806fb630 ACM |
1326 | if (!pos->attr.sample_period) |
1327 | pos->attr.sample_period = top.default_interval; | |
69aad6f1 ACM |
1328 | } |
1329 | ||
0c21f736 | 1330 | top.sym_evsel = perf_evlist__first(top.evlist); |
cc841580 | 1331 | |
ab81f3fd | 1332 | symbol_conf.priv_size = sizeof(struct annotation); |
69aad6f1 ACM |
1333 | |
1334 | symbol_conf.try_vmlinux_path = (symbol_conf.vmlinux_name == NULL); | |
1335 | if (symbol__init() < 0) | |
1336 | return -1; | |
1337 | ||
ab81f3fd ACM |
1338 | sort_entry__setup_elide(&sort_dso, symbol_conf.dso_list, "dso", stdout); |
1339 | sort_entry__setup_elide(&sort_comm, symbol_conf.comm_list, "comm", stdout); | |
1340 | sort_entry__setup_elide(&sort_sym, symbol_conf.sym_list, "symbol", stdout); | |
1341 | ||
19d4ac3c ACM |
1342 | /* |
1343 | * Avoid annotation data structures overhead when symbols aren't on the | |
1344 | * sort list. | |
1345 | */ | |
1758af10 | 1346 | top.sort_has_symbols = sort_sym.list.next != NULL; |
19d4ac3c | 1347 | |
1758af10 | 1348 | get_term_dimensions(&top.winsize); |
8c3e10eb | 1349 | if (top.print_entries == 0) { |
1758af10 ACM |
1350 | struct sigaction act = { |
1351 | .sa_sigaction = perf_top__sig_winch, | |
1352 | .sa_flags = SA_SIGINFO, | |
1353 | }; | |
1354 | perf_top__update_print_entries(&top); | |
1355 | sigaction(SIGWINCH, &act, NULL); | |
3b6ed988 ACM |
1356 | } |
1357 | ||
1758af10 | 1358 | status = __cmd_top(&top); |
806fb630 | 1359 | |
0d37aa34 | 1360 | out_delete_evlist: |
8c3e10eb | 1361 | perf_evlist__delete(top.evlist); |
69aad6f1 ACM |
1362 | |
1363 | return status; | |
b456bae0 | 1364 | } |