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" |
0d3942db | 43 | #include "arch/common.h" |
07800601 | 44 | |
8f28827a FW |
45 | #include "util/debug.h" |
46 | ||
07800601 | 47 | #include <assert.h> |
31d68e7b | 48 | #include <elf.h> |
07800601 | 49 | #include <fcntl.h> |
0e9b20b8 | 50 | |
07800601 | 51 | #include <stdio.h> |
923c42c1 MG |
52 | #include <termios.h> |
53 | #include <unistd.h> | |
9486aa38 | 54 | #include <inttypes.h> |
0e9b20b8 | 55 | |
07800601 | 56 | #include <errno.h> |
07800601 IM |
57 | #include <time.h> |
58 | #include <sched.h> | |
07800601 IM |
59 | |
60 | #include <sys/syscall.h> | |
61 | #include <sys/ioctl.h> | |
62 | #include <sys/poll.h> | |
63 | #include <sys/prctl.h> | |
64 | #include <sys/wait.h> | |
65 | #include <sys/uio.h> | |
31d68e7b | 66 | #include <sys/utsname.h> |
07800601 IM |
67 | #include <sys/mman.h> |
68 | ||
69 | #include <linux/unistd.h> | |
70 | #include <linux/types.h> | |
71 | ||
11859e82 ACM |
72 | static volatile int done; |
73 | ||
933cbb1c NK |
74 | #define HEADER_LINE_NR 5 |
75 | ||
1758af10 | 76 | static void perf_top__update_print_entries(struct perf_top *top) |
3b6ed988 | 77 | { |
933cbb1c | 78 | top->print_entries = top->winsize.ws_row - HEADER_LINE_NR; |
3b6ed988 ACM |
79 | } |
80 | ||
1d037ca1 IT |
81 | static void perf_top__sig_winch(int sig __maybe_unused, |
82 | siginfo_t *info __maybe_unused, void *arg) | |
3b6ed988 | 83 | { |
1758af10 ACM |
84 | struct perf_top *top = arg; |
85 | ||
86 | get_term_dimensions(&top->winsize); | |
87 | perf_top__update_print_entries(top); | |
3b6ed988 ACM |
88 | } |
89 | ||
1758af10 | 90 | static int perf_top__parse_source(struct perf_top *top, struct hist_entry *he) |
923c42c1 MG |
91 | { |
92 | struct symbol *sym; | |
ce6f4fab | 93 | struct annotation *notes; |
439d473b | 94 | struct map *map; |
36532461 | 95 | int err = -1; |
923c42c1 | 96 | |
ab81f3fd | 97 | if (!he || !he->ms.sym) |
b0a9ab62 ACM |
98 | return -1; |
99 | ||
ab81f3fd ACM |
100 | sym = he->ms.sym; |
101 | map = he->ms.map; | |
b0a9ab62 ACM |
102 | |
103 | /* | |
104 | * We can't annotate with just /proc/kallsyms | |
105 | */ | |
bbb7f846 AH |
106 | if (map->dso->symtab_type == DSO_BINARY_TYPE__KALLSYMS && |
107 | !dso__is_kcore(map->dso)) { | |
ce6f4fab ACM |
108 | pr_err("Can't annotate %s: No vmlinux file was found in the " |
109 | "path\n", sym->name); | |
110 | sleep(1); | |
b0a9ab62 | 111 | return -1; |
b269876c ACM |
112 | } |
113 | ||
ce6f4fab ACM |
114 | notes = symbol__annotation(sym); |
115 | if (notes->src != NULL) { | |
116 | pthread_mutex_lock(¬es->lock); | |
923c42c1 MG |
117 | goto out_assign; |
118 | } | |
923c42c1 | 119 | |
ce6f4fab | 120 | pthread_mutex_lock(¬es->lock); |
923c42c1 | 121 | |
d04b35f8 | 122 | if (symbol__alloc_hist(sym) < 0) { |
c97cf422 | 123 | pthread_mutex_unlock(¬es->lock); |
36532461 ACM |
124 | pr_err("Not enough memory for annotating '%s' symbol!\n", |
125 | sym->name); | |
ce6f4fab | 126 | sleep(1); |
c97cf422 | 127 | return err; |
923c42c1 | 128 | } |
36532461 | 129 | |
ab81f3fd | 130 | err = symbol__annotate(sym, map, 0); |
36532461 | 131 | if (err == 0) { |
923c42c1 | 132 | out_assign: |
1758af10 | 133 | top->sym_filter_entry = he; |
36532461 | 134 | } |
c97cf422 | 135 | |
ce6f4fab | 136 | pthread_mutex_unlock(¬es->lock); |
36532461 | 137 | return err; |
923c42c1 MG |
138 | } |
139 | ||
ab81f3fd | 140 | static void __zero_source_counters(struct hist_entry *he) |
923c42c1 | 141 | { |
ab81f3fd | 142 | struct symbol *sym = he->ms.sym; |
36532461 | 143 | symbol__annotate_zero_histograms(sym); |
923c42c1 MG |
144 | } |
145 | ||
31d68e7b ACM |
146 | static void ui__warn_map_erange(struct map *map, struct symbol *sym, u64 ip) |
147 | { | |
148 | struct utsname uts; | |
149 | int err = uname(&uts); | |
150 | ||
151 | ui__warning("Out of bounds address found:\n\n" | |
152 | "Addr: %" PRIx64 "\n" | |
153 | "DSO: %s %c\n" | |
154 | "Map: %" PRIx64 "-%" PRIx64 "\n" | |
155 | "Symbol: %" PRIx64 "-%" PRIx64 " %c %s\n" | |
156 | "Arch: %s\n" | |
157 | "Kernel: %s\n" | |
158 | "Tools: %s\n\n" | |
159 | "Not all samples will be on the annotation output.\n\n" | |
160 | "Please report to linux-kernel@vger.kernel.org\n", | |
161 | ip, map->dso->long_name, dso__symtab_origin(map->dso), | |
162 | map->start, map->end, sym->start, sym->end, | |
163 | sym->binding == STB_GLOBAL ? 'g' : | |
164 | sym->binding == STB_LOCAL ? 'l' : 'w', sym->name, | |
165 | err ? "[unknown]" : uts.machine, | |
166 | err ? "[unknown]" : uts.release, perf_version_string); | |
167 | if (use_browser <= 0) | |
168 | sleep(5); | |
169 | ||
170 | map->erange_warned = true; | |
171 | } | |
172 | ||
1758af10 ACM |
173 | static void perf_top__record_precise_ip(struct perf_top *top, |
174 | struct hist_entry *he, | |
175 | int counter, u64 ip) | |
923c42c1 | 176 | { |
ce6f4fab ACM |
177 | struct annotation *notes; |
178 | struct symbol *sym; | |
31d68e7b | 179 | int err; |
ce6f4fab | 180 | |
ab81f3fd | 181 | if (he == NULL || he->ms.sym == NULL || |
1758af10 ACM |
182 | ((top->sym_filter_entry == NULL || |
183 | top->sym_filter_entry->ms.sym != he->ms.sym) && use_browser != 1)) | |
923c42c1 MG |
184 | return; |
185 | ||
ab81f3fd | 186 | sym = he->ms.sym; |
ce6f4fab ACM |
187 | notes = symbol__annotation(sym); |
188 | ||
189 | if (pthread_mutex_trylock(¬es->lock)) | |
923c42c1 MG |
190 | return; |
191 | ||
d04b35f8 | 192 | if (notes->src == NULL && symbol__alloc_hist(sym) < 0) { |
ab81f3fd ACM |
193 | pthread_mutex_unlock(¬es->lock); |
194 | pr_err("Not enough memory for annotating '%s' symbol!\n", | |
195 | sym->name); | |
196 | sleep(1); | |
197 | return; | |
198 | } | |
199 | ||
200 | ip = he->ms.map->map_ip(he->ms.map, ip); | |
31d68e7b | 201 | err = symbol__inc_addr_samples(sym, he->ms.map, counter, ip); |
c7ad21af | 202 | |
ce6f4fab | 203 | pthread_mutex_unlock(¬es->lock); |
31d68e7b ACM |
204 | |
205 | if (err == -ERANGE && !he->ms.map->erange_warned) | |
206 | ui__warn_map_erange(he->ms.map, sym, ip); | |
923c42c1 MG |
207 | } |
208 | ||
1758af10 | 209 | static void perf_top__show_details(struct perf_top *top) |
923c42c1 | 210 | { |
1758af10 | 211 | struct hist_entry *he = top->sym_filter_entry; |
ce6f4fab | 212 | struct annotation *notes; |
923c42c1 | 213 | struct symbol *symbol; |
36532461 | 214 | int more; |
923c42c1 | 215 | |
ab81f3fd | 216 | if (!he) |
923c42c1 MG |
217 | return; |
218 | ||
ab81f3fd | 219 | symbol = he->ms.sym; |
ce6f4fab ACM |
220 | notes = symbol__annotation(symbol); |
221 | ||
222 | pthread_mutex_lock(¬es->lock); | |
223 | ||
224 | if (notes->src == NULL) | |
225 | goto out_unlock; | |
923c42c1 | 226 | |
7289f83c | 227 | printf("Showing %s for %s\n", perf_evsel__name(top->sym_evsel), symbol->name); |
1758af10 | 228 | printf(" Events Pcnt (>=%d%%)\n", top->sym_pcnt_filter); |
923c42c1 | 229 | |
db8fd07a | 230 | more = symbol__annotate_printf(symbol, he->ms.map, top->sym_evsel, |
1758af10 ACM |
231 | 0, top->sym_pcnt_filter, top->print_entries, 4); |
232 | if (top->zero) | |
233 | symbol__annotate_zero_histogram(symbol, top->sym_evsel->idx); | |
36532461 | 234 | else |
1758af10 | 235 | symbol__annotate_decay_histogram(symbol, top->sym_evsel->idx); |
36532461 | 236 | if (more != 0) |
923c42c1 | 237 | printf("%d lines not displayed, maybe increase display entries [e]\n", more); |
ce6f4fab ACM |
238 | out_unlock: |
239 | pthread_mutex_unlock(¬es->lock); | |
923c42c1 | 240 | } |
07800601 | 241 | |
743eb868 ACM |
242 | static struct hist_entry *perf_evsel__add_hist_entry(struct perf_evsel *evsel, |
243 | struct addr_location *al, | |
244 | struct perf_sample *sample) | |
de04687f | 245 | { |
ab81f3fd ACM |
246 | struct hist_entry *he; |
247 | ||
27a0dcb7 | 248 | pthread_mutex_lock(&evsel->hists.lock); |
05484298 AK |
249 | he = __hists__add_entry(&evsel->hists, al, NULL, sample->period, |
250 | sample->weight); | |
27a0dcb7 NK |
251 | pthread_mutex_unlock(&evsel->hists.lock); |
252 | ||
ab81f3fd ACM |
253 | if (he == NULL) |
254 | return NULL; | |
255 | ||
ab81f3fd ACM |
256 | hists__inc_nr_events(&evsel->hists, PERF_RECORD_SAMPLE); |
257 | return he; | |
de04687f | 258 | } |
07800601 | 259 | |
1758af10 | 260 | static void perf_top__print_sym_table(struct perf_top *top) |
07800601 | 261 | { |
8c3e10eb ACM |
262 | char bf[160]; |
263 | int printed = 0; | |
1758af10 | 264 | const int win_width = top->winsize.ws_col - 1; |
d94b9430 | 265 | |
0f5486b5 | 266 | puts(CONSOLE_CLEAR); |
07800601 | 267 | |
1758af10 | 268 | perf_top__header_snprintf(top, bf, sizeof(bf)); |
8c3e10eb | 269 | printf("%s\n", bf); |
07800601 | 270 | |
1758af10 | 271 | perf_top__reset_sample_counters(top); |
07800601 | 272 | |
1a105f74 | 273 | printf("%-*.*s\n", win_width, win_width, graph_dotted_line); |
07800601 | 274 | |
1758af10 ACM |
275 | if (top->sym_evsel->hists.stats.nr_lost_warned != |
276 | top->sym_evsel->hists.stats.nr_events[PERF_RECORD_LOST]) { | |
277 | top->sym_evsel->hists.stats.nr_lost_warned = | |
278 | top->sym_evsel->hists.stats.nr_events[PERF_RECORD_LOST]; | |
7b27509f ACM |
279 | color_fprintf(stdout, PERF_COLOR_RED, |
280 | "WARNING: LOST %d chunks, Check IO/CPU overload", | |
1758af10 | 281 | top->sym_evsel->hists.stats.nr_lost_warned); |
ab81f3fd | 282 | ++printed; |
93fc64f1 ACM |
283 | } |
284 | ||
1758af10 ACM |
285 | if (top->sym_filter_entry) { |
286 | perf_top__show_details(top); | |
923c42c1 MG |
287 | return; |
288 | } | |
289 | ||
3a5714f8 NK |
290 | hists__collapse_resort(&top->sym_evsel->hists); |
291 | hists__output_resort(&top->sym_evsel->hists); | |
292 | hists__decay_entries(&top->sym_evsel->hists, | |
293 | top->hide_user_symbols, | |
294 | top->hide_kernel_symbols); | |
1758af10 | 295 | hists__output_recalc_col_len(&top->sym_evsel->hists, |
933cbb1c | 296 | top->print_entries - printed); |
7cc017ed | 297 | putchar('\n'); |
41724e4c | 298 | hists__fprintf(&top->sym_evsel->hists, false, |
fa5df943 NK |
299 | top->print_entries - printed, win_width, |
300 | top->min_percent, stdout); | |
07800601 IM |
301 | } |
302 | ||
923c42c1 MG |
303 | static void prompt_integer(int *target, const char *msg) |
304 | { | |
305 | char *buf = malloc(0), *p; | |
306 | size_t dummy = 0; | |
307 | int tmp; | |
308 | ||
309 | fprintf(stdout, "\n%s: ", msg); | |
310 | if (getline(&buf, &dummy, stdin) < 0) | |
311 | return; | |
312 | ||
313 | p = strchr(buf, '\n'); | |
314 | if (p) | |
315 | *p = 0; | |
316 | ||
317 | p = buf; | |
318 | while(*p) { | |
319 | if (!isdigit(*p)) | |
320 | goto out_free; | |
321 | p++; | |
322 | } | |
323 | tmp = strtoul(buf, NULL, 10); | |
324 | *target = tmp; | |
325 | out_free: | |
326 | free(buf); | |
327 | } | |
328 | ||
329 | static void prompt_percent(int *target, const char *msg) | |
330 | { | |
331 | int tmp = 0; | |
332 | ||
333 | prompt_integer(&tmp, msg); | |
334 | if (tmp >= 0 && tmp <= 100) | |
335 | *target = tmp; | |
336 | } | |
337 | ||
1758af10 | 338 | static void perf_top__prompt_symbol(struct perf_top *top, const char *msg) |
923c42c1 MG |
339 | { |
340 | char *buf = malloc(0), *p; | |
1758af10 | 341 | struct hist_entry *syme = top->sym_filter_entry, *n, *found = NULL; |
ab81f3fd | 342 | struct rb_node *next; |
923c42c1 MG |
343 | size_t dummy = 0; |
344 | ||
345 | /* zero counters of active symbol */ | |
346 | if (syme) { | |
923c42c1 | 347 | __zero_source_counters(syme); |
1758af10 | 348 | top->sym_filter_entry = NULL; |
923c42c1 MG |
349 | } |
350 | ||
351 | fprintf(stdout, "\n%s: ", msg); | |
352 | if (getline(&buf, &dummy, stdin) < 0) | |
353 | goto out_free; | |
354 | ||
355 | p = strchr(buf, '\n'); | |
356 | if (p) | |
357 | *p = 0; | |
358 | ||
1758af10 | 359 | next = rb_first(&top->sym_evsel->hists.entries); |
ab81f3fd ACM |
360 | while (next) { |
361 | n = rb_entry(next, struct hist_entry, rb_node); | |
362 | if (n->ms.sym && !strcmp(buf, n->ms.sym->name)) { | |
363 | found = n; | |
923c42c1 MG |
364 | break; |
365 | } | |
ab81f3fd | 366 | next = rb_next(&n->rb_node); |
923c42c1 MG |
367 | } |
368 | ||
369 | if (!found) { | |
66aeb6d5 | 370 | fprintf(stderr, "Sorry, %s is not active.\n", buf); |
923c42c1 | 371 | sleep(1); |
923c42c1 | 372 | } else |
1758af10 | 373 | perf_top__parse_source(top, found); |
923c42c1 MG |
374 | |
375 | out_free: | |
376 | free(buf); | |
377 | } | |
378 | ||
1758af10 | 379 | static void perf_top__print_mapped_keys(struct perf_top *top) |
923c42c1 | 380 | { |
091bd2e9 MG |
381 | char *name = NULL; |
382 | ||
1758af10 ACM |
383 | if (top->sym_filter_entry) { |
384 | struct symbol *sym = top->sym_filter_entry->ms.sym; | |
091bd2e9 MG |
385 | name = sym->name; |
386 | } | |
387 | ||
388 | fprintf(stdout, "\nMapped keys:\n"); | |
1758af10 ACM |
389 | fprintf(stdout, "\t[d] display refresh delay. \t(%d)\n", top->delay_secs); |
390 | fprintf(stdout, "\t[e] display entries (lines). \t(%d)\n", top->print_entries); | |
091bd2e9 | 391 | |
1758af10 | 392 | if (top->evlist->nr_entries > 1) |
7289f83c | 393 | fprintf(stdout, "\t[E] active event counter. \t(%s)\n", perf_evsel__name(top->sym_evsel)); |
091bd2e9 | 394 | |
1758af10 | 395 | fprintf(stdout, "\t[f] profile display filter (count). \t(%d)\n", top->count_filter); |
091bd2e9 | 396 | |
1758af10 | 397 | fprintf(stdout, "\t[F] annotate display filter (percent). \t(%d%%)\n", top->sym_pcnt_filter); |
6cff0e8d KS |
398 | fprintf(stdout, "\t[s] annotate symbol. \t(%s)\n", name?: "NULL"); |
399 | fprintf(stdout, "\t[S] stop annotation.\n"); | |
091bd2e9 | 400 | |
8ffcda17 | 401 | fprintf(stdout, |
1a72cfa6 | 402 | "\t[K] hide kernel_symbols symbols. \t(%s)\n", |
1758af10 | 403 | top->hide_kernel_symbols ? "yes" : "no"); |
8ffcda17 ACM |
404 | fprintf(stdout, |
405 | "\t[U] hide user symbols. \t(%s)\n", | |
1758af10 ACM |
406 | top->hide_user_symbols ? "yes" : "no"); |
407 | fprintf(stdout, "\t[z] toggle sample zeroing. \t(%d)\n", top->zero ? 1 : 0); | |
091bd2e9 MG |
408 | fprintf(stdout, "\t[qQ] quit.\n"); |
409 | } | |
410 | ||
1758af10 | 411 | static int perf_top__key_mapped(struct perf_top *top, int c) |
091bd2e9 MG |
412 | { |
413 | switch (c) { | |
414 | case 'd': | |
415 | case 'e': | |
416 | case 'f': | |
417 | case 'z': | |
418 | case 'q': | |
419 | case 'Q': | |
8ffcda17 ACM |
420 | case 'K': |
421 | case 'U': | |
6cff0e8d KS |
422 | case 'F': |
423 | case 's': | |
424 | case 'S': | |
091bd2e9 MG |
425 | return 1; |
426 | case 'E': | |
1758af10 | 427 | return top->evlist->nr_entries > 1 ? 1 : 0; |
83a0944f IM |
428 | default: |
429 | break; | |
091bd2e9 MG |
430 | } |
431 | ||
432 | return 0; | |
923c42c1 MG |
433 | } |
434 | ||
11859e82 | 435 | static bool perf_top__handle_keypress(struct perf_top *top, int c) |
923c42c1 | 436 | { |
11859e82 ACM |
437 | bool ret = true; |
438 | ||
1758af10 | 439 | if (!perf_top__key_mapped(top, c)) { |
091bd2e9 MG |
440 | struct pollfd stdin_poll = { .fd = 0, .events = POLLIN }; |
441 | struct termios tc, save; | |
442 | ||
1758af10 | 443 | perf_top__print_mapped_keys(top); |
091bd2e9 MG |
444 | fprintf(stdout, "\nEnter selection, or unmapped key to continue: "); |
445 | fflush(stdout); | |
446 | ||
447 | tcgetattr(0, &save); | |
448 | tc = save; | |
449 | tc.c_lflag &= ~(ICANON | ECHO); | |
450 | tc.c_cc[VMIN] = 0; | |
451 | tc.c_cc[VTIME] = 0; | |
452 | tcsetattr(0, TCSANOW, &tc); | |
453 | ||
454 | poll(&stdin_poll, 1, -1); | |
455 | c = getc(stdin); | |
456 | ||
457 | tcsetattr(0, TCSAFLUSH, &save); | |
1758af10 | 458 | if (!perf_top__key_mapped(top, c)) |
11859e82 | 459 | return ret; |
091bd2e9 MG |
460 | } |
461 | ||
923c42c1 MG |
462 | switch (c) { |
463 | case 'd': | |
1758af10 ACM |
464 | prompt_integer(&top->delay_secs, "Enter display delay"); |
465 | if (top->delay_secs < 1) | |
466 | top->delay_secs = 1; | |
923c42c1 MG |
467 | break; |
468 | case 'e': | |
1758af10 ACM |
469 | prompt_integer(&top->print_entries, "Enter display entries (lines)"); |
470 | if (top->print_entries == 0) { | |
471 | struct sigaction act = { | |
472 | .sa_sigaction = perf_top__sig_winch, | |
473 | .sa_flags = SA_SIGINFO, | |
474 | }; | |
475 | perf_top__sig_winch(SIGWINCH, NULL, top); | |
476 | sigaction(SIGWINCH, &act, NULL); | |
509605db | 477 | } else { |
3b6ed988 | 478 | signal(SIGWINCH, SIG_DFL); |
509605db | 479 | } |
923c42c1 MG |
480 | break; |
481 | case 'E': | |
1758af10 | 482 | if (top->evlist->nr_entries > 1) { |
ce2d17ca AN |
483 | /* Select 0 as the default event: */ |
484 | int counter = 0; | |
485 | ||
923c42c1 | 486 | fprintf(stderr, "\nAvailable events:"); |
69aad6f1 | 487 | |
1758af10 | 488 | list_for_each_entry(top->sym_evsel, &top->evlist->entries, node) |
7289f83c | 489 | fprintf(stderr, "\n\t%d %s", top->sym_evsel->idx, perf_evsel__name(top->sym_evsel)); |
923c42c1 | 490 | |
ec52d976 | 491 | prompt_integer(&counter, "Enter details event counter"); |
923c42c1 | 492 | |
1758af10 | 493 | if (counter >= top->evlist->nr_entries) { |
0c21f736 | 494 | top->sym_evsel = perf_evlist__first(top->evlist); |
7289f83c | 495 | fprintf(stderr, "Sorry, no such event, using %s.\n", perf_evsel__name(top->sym_evsel)); |
923c42c1 | 496 | sleep(1); |
69aad6f1 | 497 | break; |
923c42c1 | 498 | } |
1758af10 ACM |
499 | list_for_each_entry(top->sym_evsel, &top->evlist->entries, node) |
500 | if (top->sym_evsel->idx == counter) | |
69aad6f1 | 501 | break; |
ec52d976 | 502 | } else |
0c21f736 | 503 | top->sym_evsel = perf_evlist__first(top->evlist); |
923c42c1 MG |
504 | break; |
505 | case 'f': | |
1758af10 | 506 | prompt_integer(&top->count_filter, "Enter display event count filter"); |
923c42c1 MG |
507 | break; |
508 | case 'F': | |
1758af10 ACM |
509 | prompt_percent(&top->sym_pcnt_filter, |
510 | "Enter details display event filter (percent)"); | |
923c42c1 | 511 | break; |
8ffcda17 | 512 | case 'K': |
1758af10 | 513 | top->hide_kernel_symbols = !top->hide_kernel_symbols; |
8ffcda17 | 514 | break; |
923c42c1 MG |
515 | case 'q': |
516 | case 'Q': | |
517 | printf("exiting.\n"); | |
1758af10 ACM |
518 | if (top->dump_symtab) |
519 | perf_session__fprintf_dsos(top->session, stderr); | |
11859e82 ACM |
520 | ret = false; |
521 | break; | |
923c42c1 | 522 | case 's': |
1758af10 | 523 | perf_top__prompt_symbol(top, "Enter details symbol"); |
923c42c1 MG |
524 | break; |
525 | case 'S': | |
1758af10 | 526 | if (!top->sym_filter_entry) |
923c42c1 MG |
527 | break; |
528 | else { | |
1758af10 | 529 | struct hist_entry *syme = top->sym_filter_entry; |
923c42c1 | 530 | |
1758af10 | 531 | top->sym_filter_entry = NULL; |
923c42c1 | 532 | __zero_source_counters(syme); |
923c42c1 MG |
533 | } |
534 | break; | |
8ffcda17 | 535 | case 'U': |
1758af10 | 536 | top->hide_user_symbols = !top->hide_user_symbols; |
8ffcda17 | 537 | break; |
923c42c1 | 538 | case 'z': |
1758af10 | 539 | top->zero = !top->zero; |
923c42c1 | 540 | break; |
83a0944f IM |
541 | default: |
542 | break; | |
923c42c1 | 543 | } |
11859e82 ACM |
544 | |
545 | return ret; | |
923c42c1 MG |
546 | } |
547 | ||
ab81f3fd ACM |
548 | static void perf_top__sort_new_samples(void *arg) |
549 | { | |
550 | struct perf_top *t = arg; | |
551 | perf_top__reset_sample_counters(t); | |
552 | ||
553 | if (t->evlist->selected != NULL) | |
554 | t->sym_evsel = t->evlist->selected; | |
555 | ||
3a5714f8 NK |
556 | hists__collapse_resort(&t->sym_evsel->hists); |
557 | hists__output_resort(&t->sym_evsel->hists); | |
558 | hists__decay_entries(&t->sym_evsel->hists, | |
559 | t->hide_user_symbols, | |
560 | t->hide_kernel_symbols); | |
ab81f3fd ACM |
561 | } |
562 | ||
1758af10 | 563 | static void *display_thread_tui(void *arg) |
c0443df1 | 564 | { |
0d37aa34 | 565 | struct perf_evsel *pos; |
1758af10 | 566 | struct perf_top *top = arg; |
ab81f3fd | 567 | const char *help = "For a higher level overview, try: perf top --sort comm,dso"; |
9783adf7 NK |
568 | struct hist_browser_timer hbt = { |
569 | .timer = perf_top__sort_new_samples, | |
570 | .arg = top, | |
571 | .refresh = top->delay_secs, | |
572 | }; | |
ab81f3fd | 573 | |
1758af10 | 574 | perf_top__sort_new_samples(top); |
0d37aa34 ACM |
575 | |
576 | /* | |
577 | * Initialize the uid_filter_str, in the future the TUI will allow | |
578 | * Zooming in/out UIDs. For now juse use whatever the user passed | |
579 | * via --uid. | |
580 | */ | |
581 | list_for_each_entry(pos, &top->evlist->entries, node) | |
2376c67a | 582 | pos->hists.uid_filter_str = top->record_opts.target.uid_str; |
0d37aa34 | 583 | |
fa5df943 | 584 | perf_evlist__tui_browse_hists(top->evlist, help, &hbt, top->min_percent, |
68d80758 | 585 | &top->session->header.env); |
ab81f3fd | 586 | |
11859e82 | 587 | done = 1; |
c0443df1 ACM |
588 | return NULL; |
589 | } | |
590 | ||
1758af10 | 591 | static void *display_thread(void *arg) |
07800601 | 592 | { |
0f5486b5 | 593 | struct pollfd stdin_poll = { .fd = 0, .events = POLLIN }; |
923c42c1 | 594 | struct termios tc, save; |
1758af10 | 595 | struct perf_top *top = arg; |
923c42c1 MG |
596 | int delay_msecs, c; |
597 | ||
598 | tcgetattr(0, &save); | |
599 | tc = save; | |
600 | tc.c_lflag &= ~(ICANON | ECHO); | |
601 | tc.c_cc[VMIN] = 0; | |
602 | tc.c_cc[VTIME] = 0; | |
091bd2e9 | 603 | |
3af6e338 | 604 | pthread__unblock_sigwinch(); |
923c42c1 | 605 | repeat: |
1758af10 | 606 | delay_msecs = top->delay_secs * 1000; |
923c42c1 MG |
607 | tcsetattr(0, TCSANOW, &tc); |
608 | /* trash return*/ | |
609 | getc(stdin); | |
07800601 | 610 | |
11859e82 | 611 | while (!done) { |
1758af10 | 612 | perf_top__print_sym_table(top); |
3af6e338 ACM |
613 | /* |
614 | * Either timeout expired or we got an EINTR due to SIGWINCH, | |
615 | * refresh screen in both cases. | |
616 | */ | |
617 | switch (poll(&stdin_poll, 1, delay_msecs)) { | |
618 | case 0: | |
619 | continue; | |
620 | case -1: | |
621 | if (errno == EINTR) | |
622 | continue; | |
623 | /* Fall trhu */ | |
624 | default: | |
11859e82 ACM |
625 | c = getc(stdin); |
626 | tcsetattr(0, TCSAFLUSH, &save); | |
627 | ||
628 | if (perf_top__handle_keypress(top, c)) | |
629 | goto repeat; | |
630 | done = 1; | |
3af6e338 ACM |
631 | } |
632 | } | |
07800601 IM |
633 | |
634 | return NULL; | |
635 | } | |
636 | ||
2ab52083 | 637 | /* Tag samples to be skipped. */ |
f37a291c | 638 | static const char *skip_symbols[] = { |
4bea8b5c | 639 | "intel_idle", |
2ab52083 | 640 | "default_idle", |
b0e8572f | 641 | "native_safe_halt", |
2ab52083 AB |
642 | "cpu_idle", |
643 | "enter_idle", | |
644 | "exit_idle", | |
645 | "mwait_idle", | |
59b90056 | 646 | "mwait_idle_with_hints", |
8357275b | 647 | "poll_idle", |
3a3393ef AB |
648 | "ppc64_runlatch_off", |
649 | "pseries_dedicated_idle_sleep", | |
2ab52083 AB |
650 | NULL |
651 | }; | |
652 | ||
1d037ca1 | 653 | static int symbol_filter(struct map *map __maybe_unused, struct symbol *sym) |
07800601 | 654 | { |
de04687f | 655 | const char *name = sym->name; |
2ab52083 | 656 | int i; |
de04687f | 657 | |
3a3393ef AB |
658 | /* |
659 | * ppc64 uses function descriptors and appends a '.' to the | |
660 | * start of every instruction address. Remove it. | |
661 | */ | |
662 | if (name[0] == '.') | |
663 | name++; | |
664 | ||
de04687f ACM |
665 | if (!strcmp(name, "_text") || |
666 | !strcmp(name, "_etext") || | |
667 | !strcmp(name, "_sinittext") || | |
668 | !strncmp("init_module", name, 11) || | |
669 | !strncmp("cleanup_module", name, 14) || | |
670 | strstr(name, "_text_start") || | |
671 | strstr(name, "_text_end")) | |
07800601 | 672 | return 1; |
07800601 | 673 | |
2ab52083 AB |
674 | for (i = 0; skip_symbols[i]; i++) { |
675 | if (!strcmp(skip_symbols[i], name)) { | |
171b3be9 | 676 | sym->ignore = true; |
2ab52083 AB |
677 | break; |
678 | } | |
679 | } | |
07800601 | 680 | |
07800601 IM |
681 | return 0; |
682 | } | |
683 | ||
1758af10 ACM |
684 | static void perf_event__process_sample(struct perf_tool *tool, |
685 | const union perf_event *event, | |
7b27509f | 686 | struct perf_evsel *evsel, |
8115d60c | 687 | struct perf_sample *sample, |
743eb868 | 688 | struct machine *machine) |
07800601 | 689 | { |
1758af10 | 690 | struct perf_top *top = container_of(tool, struct perf_top, tool); |
19d4ac3c | 691 | struct symbol *parent = NULL; |
8115d60c | 692 | u64 ip = event->ip.ip; |
1ed091c4 | 693 | struct addr_location al; |
19d4ac3c | 694 | int err; |
5b2bb75a | 695 | |
23346f21 | 696 | if (!machine && perf_guest) { |
6b118e92 DA |
697 | static struct intlist *seen; |
698 | ||
699 | if (!seen) | |
ffe0fb76 | 700 | seen = intlist__new(NULL); |
6b118e92 DA |
701 | |
702 | if (!intlist__has_entry(seen, event->ip.pid)) { | |
703 | pr_err("Can't find guest [%d]'s kernel information\n", | |
704 | event->ip.pid); | |
705 | intlist__add(seen, event->ip.pid); | |
706 | } | |
a1645ce1 ZY |
707 | return; |
708 | } | |
709 | ||
0c095715 | 710 | if (!machine) { |
11859e82 | 711 | pr_err("%u unprocessable samples recorded.\r", |
28a6b6aa | 712 | top->session->stats.nr_unprocessable_samples++); |
0c095715 JR |
713 | return; |
714 | } | |
715 | ||
8115d60c | 716 | if (event->header.misc & PERF_RECORD_MISC_EXACT_IP) |
1758af10 | 717 | top->exact_samples++; |
1676b8a0 | 718 | |
e44baa3e | 719 | if (perf_event__preprocess_sample(event, machine, &al, sample) < 0 || |
72b8fa17 | 720 | al.filtered) |
1ed091c4 | 721 | return; |
07800601 | 722 | |
1758af10 | 723 | if (!top->kptr_restrict_warned && |
5f6f5580 ACM |
724 | symbol_conf.kptr_restrict && |
725 | al.cpumode == PERF_RECORD_MISC_KERNEL) { | |
726 | ui__warning( | |
727 | "Kernel address maps (/proc/{kallsyms,modules}) are restricted.\n\n" | |
728 | "Check /proc/sys/kernel/kptr_restrict.\n\n" | |
729 | "Kernel%s samples will not be resolved.\n", | |
730 | !RB_EMPTY_ROOT(&al.map->dso->symbols[MAP__FUNCTION]) ? | |
731 | " modules" : ""); | |
732 | if (use_browser <= 0) | |
733 | sleep(5); | |
1758af10 | 734 | top->kptr_restrict_warned = true; |
5f6f5580 ACM |
735 | } |
736 | ||
72b8fa17 | 737 | if (al.sym == NULL) { |
e4a338d0 | 738 | const char *msg = "Kernel samples will not be resolved.\n"; |
72b8fa17 ACM |
739 | /* |
740 | * As we do lazy loading of symtabs we only will know if the | |
741 | * specified vmlinux file is invalid when we actually have a | |
742 | * hit in kernel space and then try to load it. So if we get | |
743 | * here and there are _no_ symbols in the DSO backing the | |
744 | * kernel map, bail out. | |
745 | * | |
746 | * We may never get here, for instance, if we use -K/ | |
747 | * --hide-kernel-symbols, even if the user specifies an | |
748 | * invalid --vmlinux ;-) | |
749 | */ | |
1758af10 | 750 | if (!top->kptr_restrict_warned && !top->vmlinux_warned && |
e4a338d0 | 751 | al.map == machine->vmlinux_maps[MAP__FUNCTION] && |
72b8fa17 | 752 | RB_EMPTY_ROOT(&al.map->dso->symbols[MAP__FUNCTION])) { |
e4a338d0 ACM |
753 | if (symbol_conf.vmlinux_name) { |
754 | ui__warning("The %s file can't be used.\n%s", | |
755 | symbol_conf.vmlinux_name, msg); | |
756 | } else { | |
757 | ui__warning("A vmlinux file was not found.\n%s", | |
758 | msg); | |
759 | } | |
760 | ||
761 | if (use_browser <= 0) | |
762 | sleep(5); | |
1758af10 | 763 | top->vmlinux_warned = true; |
72b8fa17 | 764 | } |
6cff0e8d KS |
765 | } |
766 | ||
ab81f3fd | 767 | if (al.sym == NULL || !al.sym->ignore) { |
ab81f3fd | 768 | struct hist_entry *he; |
70db7533 | 769 | |
19d4ac3c ACM |
770 | if ((sort__has_parent || symbol_conf.use_callchain) && |
771 | sample->callchain) { | |
71ad0f5e JO |
772 | err = machine__resolve_callchain(machine, evsel, |
773 | al.thread, sample, | |
b21484f1 | 774 | &parent, &al); |
19d4ac3c ACM |
775 | if (err) |
776 | return; | |
777 | } | |
778 | ||
743eb868 | 779 | he = perf_evsel__add_hist_entry(evsel, &al, sample); |
ab81f3fd ACM |
780 | if (he == NULL) { |
781 | pr_err("Problem incrementing symbol period, skipping event\n"); | |
782 | return; | |
5807806a | 783 | } |
ab81f3fd | 784 | |
19d4ac3c | 785 | if (symbol_conf.use_callchain) { |
47260645 | 786 | err = callchain_append(he->callchain, &callchain_cursor, |
19d4ac3c ACM |
787 | sample->period); |
788 | if (err) | |
789 | return; | |
790 | } | |
791 | ||
8f0f684b | 792 | if (sort__has_sym) |
1758af10 | 793 | perf_top__record_precise_ip(top, he, evsel->idx, ip); |
5b2bb75a | 794 | } |
ab81f3fd ACM |
795 | |
796 | return; | |
07800601 IM |
797 | } |
798 | ||
1758af10 | 799 | static void perf_top__mmap_read_idx(struct perf_top *top, int idx) |
07800601 | 800 | { |
8d50e5b4 | 801 | struct perf_sample sample; |
7b27509f | 802 | struct perf_evsel *evsel; |
1758af10 | 803 | struct perf_session *session = top->session; |
8115d60c | 804 | union perf_event *event; |
743eb868 ACM |
805 | struct machine *machine; |
806 | u8 origin; | |
5538beca | 807 | int ret; |
07800601 | 808 | |
1758af10 | 809 | while ((event = perf_evlist__mmap_read(top->evlist, idx)) != NULL) { |
0807d2d8 | 810 | ret = perf_evlist__parse_sample(top->evlist, event, &sample); |
5538beca FW |
811 | if (ret) { |
812 | pr_err("Can't parse sample, err = %d\n", ret); | |
813 | continue; | |
814 | } | |
04391deb | 815 | |
1758af10 | 816 | evsel = perf_evlist__id2evsel(session->evlist, sample.id); |
7b27509f ACM |
817 | assert(evsel != NULL); |
818 | ||
743eb868 ACM |
819 | origin = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; |
820 | ||
5b2bb75a | 821 | if (event->header.type == PERF_RECORD_SAMPLE) |
1758af10 | 822 | ++top->samples; |
743eb868 ACM |
823 | |
824 | switch (origin) { | |
825 | case PERF_RECORD_MISC_USER: | |
1758af10 ACM |
826 | ++top->us_samples; |
827 | if (top->hide_user_symbols) | |
743eb868 | 828 | continue; |
34ba5122 | 829 | machine = &session->machines.host; |
743eb868 ACM |
830 | break; |
831 | case PERF_RECORD_MISC_KERNEL: | |
1758af10 ACM |
832 | ++top->kernel_samples; |
833 | if (top->hide_kernel_symbols) | |
743eb868 | 834 | continue; |
34ba5122 | 835 | machine = &session->machines.host; |
743eb868 ACM |
836 | break; |
837 | case PERF_RECORD_MISC_GUEST_KERNEL: | |
1758af10 ACM |
838 | ++top->guest_kernel_samples; |
839 | machine = perf_session__find_machine(session, event->ip.pid); | |
743eb868 ACM |
840 | break; |
841 | case PERF_RECORD_MISC_GUEST_USER: | |
1758af10 | 842 | ++top->guest_us_samples; |
743eb868 ACM |
843 | /* |
844 | * TODO: we don't process guest user from host side | |
845 | * except simple counting. | |
846 | */ | |
847 | /* Fall thru */ | |
848 | default: | |
849 | continue; | |
850 | } | |
851 | ||
852 | ||
1758af10 ACM |
853 | if (event->header.type == PERF_RECORD_SAMPLE) { |
854 | perf_event__process_sample(&top->tool, event, evsel, | |
855 | &sample, machine); | |
856 | } else if (event->header.type < PERF_RECORD_MAX) { | |
7b27509f | 857 | hists__inc_nr_events(&evsel->hists, event->header.type); |
b0a7d1a0 | 858 | machine__process_event(machine, event); |
7b27509f | 859 | } else |
28a6b6aa | 860 | ++session->stats.nr_unknown_events; |
07800601 | 861 | } |
07800601 IM |
862 | } |
863 | ||
1758af10 | 864 | static void perf_top__mmap_read(struct perf_top *top) |
2f01190a | 865 | { |
70db7533 ACM |
866 | int i; |
867 | ||
1758af10 ACM |
868 | for (i = 0; i < top->evlist->nr_mmaps; i++) |
869 | perf_top__mmap_read_idx(top, i); | |
2f01190a FW |
870 | } |
871 | ||
11859e82 | 872 | static int perf_top__start_counters(struct perf_top *top) |
72cb7013 | 873 | { |
56e52e85 | 874 | char msg[512]; |
6a4bb04c | 875 | struct perf_evsel *counter; |
1758af10 | 876 | struct perf_evlist *evlist = top->evlist; |
2376c67a | 877 | struct perf_record_opts *opts = &top->record_opts; |
727ab04e | 878 | |
2376c67a | 879 | perf_evlist__config(evlist, opts); |
7e4ff9e3 | 880 | |
72cb7013 | 881 | list_for_each_entry(counter, &evlist->entries, node) { |
72cb7013 | 882 | try_again: |
1758af10 | 883 | if (perf_evsel__open(counter, top->evlist->cpus, |
6a4bb04c | 884 | top->evlist->threads) < 0) { |
56e52e85 | 885 | if (perf_evsel__fallback(counter, errno, msg, sizeof(msg))) { |
d6d901c2 | 886 | if (verbose) |
c0a54341 | 887 | ui__warning("%s\n", msg); |
d6d901c2 ZY |
888 | goto try_again; |
889 | } | |
c286c419 | 890 | |
56e52e85 ACM |
891 | perf_evsel__open_strerror(counter, &opts->target, |
892 | errno, msg, sizeof(msg)); | |
893 | ui__error("%s\n", msg); | |
c286c419 | 894 | goto out_err; |
d6d901c2 | 895 | } |
716c69fe | 896 | } |
70db7533 | 897 | |
2376c67a | 898 | if (perf_evlist__mmap(evlist, opts->mmap_pages, false) < 0) { |
3780f488 | 899 | ui__error("Failed to mmap with %d (%s)\n", |
c286c419 ACM |
900 | errno, strerror(errno)); |
901 | goto out_err; | |
902 | } | |
903 | ||
11859e82 | 904 | return 0; |
c286c419 ACM |
905 | |
906 | out_err: | |
11859e82 | 907 | return -1; |
716c69fe IM |
908 | } |
909 | ||
8f0f684b | 910 | static int perf_top__setup_sample_type(struct perf_top *top __maybe_unused) |
19d4ac3c | 911 | { |
8f0f684b | 912 | if (!sort__has_sym) { |
19d4ac3c | 913 | if (symbol_conf.use_callchain) { |
3780f488 | 914 | ui__error("Selected -g but \"sym\" not present in --sort/-s."); |
19d4ac3c ACM |
915 | return -EINVAL; |
916 | } | |
2376c67a | 917 | } else if (callchain_param.mode != CHAIN_NONE) { |
19d4ac3c | 918 | if (callchain_register_param(&callchain_param) < 0) { |
3780f488 | 919 | ui__error("Can't register callchain params.\n"); |
19d4ac3c ACM |
920 | return -EINVAL; |
921 | } | |
922 | } | |
923 | ||
924 | return 0; | |
925 | } | |
926 | ||
1758af10 | 927 | static int __cmd_top(struct perf_top *top) |
716c69fe | 928 | { |
2376c67a | 929 | struct perf_record_opts *opts = &top->record_opts; |
716c69fe | 930 | pthread_t thread; |
19d4ac3c | 931 | int ret; |
d8f66248 | 932 | /* |
b3165f41 ACM |
933 | * FIXME: perf_session__new should allow passing a O_MMAP, so that all this |
934 | * mmap reading, etc is encapsulated in it. Use O_WRONLY for now. | |
d8f66248 | 935 | */ |
1758af10 ACM |
936 | top->session = perf_session__new(NULL, O_WRONLY, false, false, NULL); |
937 | if (top->session == NULL) | |
b3165f41 | 938 | return -ENOMEM; |
07800601 | 939 | |
36035f78 AH |
940 | machines__set_symbol_filter(&top->session->machines, symbol_filter); |
941 | ||
0d3942db SB |
942 | if (!objdump_path) { |
943 | ret = perf_session_env__lookup_objdump(&top->session->header.env); | |
944 | if (ret) | |
945 | goto out_delete; | |
946 | } | |
947 | ||
1758af10 | 948 | ret = perf_top__setup_sample_type(top); |
19d4ac3c ACM |
949 | if (ret) |
950 | goto out_delete; | |
951 | ||
2376c67a | 952 | if (perf_target__has_task(&opts->target)) |
1758af10 | 953 | perf_event__synthesize_thread_map(&top->tool, top->evlist->threads, |
743eb868 | 954 | perf_event__process, |
876650e6 | 955 | &top->session->machines.host); |
5b2bb75a | 956 | else |
1758af10 | 957 | perf_event__synthesize_threads(&top->tool, perf_event__process, |
876650e6 | 958 | &top->session->machines.host); |
11859e82 ACM |
959 | |
960 | ret = perf_top__start_counters(top); | |
961 | if (ret) | |
962 | goto out_delete; | |
963 | ||
1758af10 | 964 | top->session->evlist = top->evlist; |
7b56cce2 | 965 | perf_session__set_id_hdr_size(top->session); |
07800601 | 966 | |
2376c67a ACM |
967 | /* |
968 | * When perf is starting the traced process, all the events (apart from | |
969 | * group members) have enable_on_exec=1 set, so don't spoil it by | |
970 | * prematurely enabling them. | |
971 | * | |
972 | * XXX 'top' still doesn't start workloads like record, trace, but should, | |
973 | * so leave the check here. | |
974 | */ | |
975 | if (!perf_target__none(&opts->target)) | |
976 | perf_evlist__enable(top->evlist); | |
977 | ||
2f01190a | 978 | /* Wait for a minimal set of events before starting the snapshot */ |
1758af10 | 979 | poll(top->evlist->pollfd, top->evlist->nr_fds, 100); |
2f01190a | 980 | |
1758af10 | 981 | perf_top__mmap_read(top); |
2f01190a | 982 | |
11859e82 | 983 | ret = -1; |
c0443df1 | 984 | if (pthread_create(&thread, NULL, (use_browser > 0 ? display_thread_tui : |
1758af10 | 985 | display_thread), top)) { |
3780f488 | 986 | ui__error("Could not create display thread.\n"); |
11859e82 | 987 | goto out_delete; |
07800601 IM |
988 | } |
989 | ||
1758af10 | 990 | if (top->realtime_prio) { |
07800601 IM |
991 | struct sched_param param; |
992 | ||
1758af10 | 993 | param.sched_priority = top->realtime_prio; |
07800601 | 994 | if (sched_setscheduler(0, SCHED_FIFO, ¶m)) { |
3780f488 | 995 | ui__error("Could not set realtime priority.\n"); |
11859e82 | 996 | goto out_delete; |
07800601 IM |
997 | } |
998 | } | |
999 | ||
11859e82 | 1000 | while (!done) { |
1758af10 | 1001 | u64 hits = top->samples; |
07800601 | 1002 | |
1758af10 | 1003 | perf_top__mmap_read(top); |
07800601 | 1004 | |
1758af10 ACM |
1005 | if (hits == top->samples) |
1006 | ret = poll(top->evlist->pollfd, top->evlist->nr_fds, 100); | |
07800601 IM |
1007 | } |
1008 | ||
11859e82 | 1009 | ret = 0; |
19d4ac3c | 1010 | out_delete: |
1758af10 ACM |
1011 | perf_session__delete(top->session); |
1012 | top->session = NULL; | |
19d4ac3c | 1013 | |
11859e82 | 1014 | return ret; |
19d4ac3c ACM |
1015 | } |
1016 | ||
1017 | static int | |
1758af10 | 1018 | parse_callchain_opt(const struct option *opt, const char *arg, int unset) |
19d4ac3c | 1019 | { |
19d4ac3c ACM |
1020 | /* |
1021 | * --no-call-graph | |
1022 | */ | |
2376c67a | 1023 | if (unset) |
19d4ac3c | 1024 | return 0; |
19d4ac3c ACM |
1025 | |
1026 | symbol_conf.use_callchain = true; | |
1027 | ||
2376c67a | 1028 | return record_parse_callchain_opt(opt, arg, unset); |
07800601 | 1029 | } |
b456bae0 | 1030 | |
fa5df943 NK |
1031 | static int |
1032 | parse_percent_limit(const struct option *opt, const char *arg, | |
1033 | int unset __maybe_unused) | |
1034 | { | |
1035 | struct perf_top *top = opt->value; | |
1036 | ||
1037 | top->min_percent = strtof(arg, NULL); | |
1038 | return 0; | |
1039 | } | |
1040 | ||
1d037ca1 | 1041 | int cmd_top(int argc, const char **argv, const char *prefix __maybe_unused) |
1758af10 | 1042 | { |
16ad2ffb NK |
1043 | int status; |
1044 | char errbuf[BUFSIZ]; | |
1758af10 ACM |
1045 | struct perf_top top = { |
1046 | .count_filter = 5, | |
1047 | .delay_secs = 2, | |
2376c67a ACM |
1048 | .record_opts = { |
1049 | .mmap_pages = UINT_MAX, | |
1050 | .user_freq = UINT_MAX, | |
1051 | .user_interval = ULLONG_MAX, | |
1052 | .freq = 4000, /* 4 KHz */ | |
1053 | .target = { | |
1054 | .uses_mmap = true, | |
1055 | }, | |
d1cb9fce | 1056 | }, |
2376c67a | 1057 | .sym_pcnt_filter = 5, |
1758af10 | 1058 | }; |
2376c67a ACM |
1059 | struct perf_record_opts *opts = &top.record_opts; |
1060 | struct perf_target *target = &opts->target; | |
1758af10 | 1061 | const struct option options[] = { |
8c3e10eb | 1062 | OPT_CALLBACK('e', "event", &top.evlist, "event", |
86847b62 | 1063 | "event selector. use 'perf list' to list available events", |
f120f9d5 | 1064 | parse_events_option), |
2376c67a ACM |
1065 | OPT_U64('c', "count", &opts->user_interval, "event period to sample"), |
1066 | OPT_STRING('p', "pid", &target->pid, "pid", | |
d6d901c2 | 1067 | "profile events on existing process id"), |
2376c67a | 1068 | OPT_STRING('t', "tid", &target->tid, "tid", |
d6d901c2 | 1069 | "profile events on existing thread id"), |
2376c67a | 1070 | OPT_BOOLEAN('a', "all-cpus", &target->system_wide, |
b456bae0 | 1071 | "system-wide collection from all CPUs"), |
2376c67a | 1072 | OPT_STRING('C', "cpu", &target->cpu_list, "cpu", |
c45c6ea2 | 1073 | "list of cpus to monitor"), |
b32d133a ACM |
1074 | OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name, |
1075 | "file", "vmlinux pathname"), | |
8c3e10eb | 1076 | OPT_BOOLEAN('K', "hide_kernel_symbols", &top.hide_kernel_symbols, |
8ffcda17 | 1077 | "hide kernel symbols"), |
2376c67a ACM |
1078 | OPT_UINTEGER('m', "mmap-pages", &opts->mmap_pages, |
1079 | "number of mmap data pages"), | |
1758af10 | 1080 | OPT_INTEGER('r', "realtime", &top.realtime_prio, |
b456bae0 | 1081 | "collect data with this RT SCHED_FIFO priority"), |
8c3e10eb | 1082 | OPT_INTEGER('d', "delay", &top.delay_secs, |
b456bae0 | 1083 | "number of seconds to delay between refreshes"), |
1758af10 | 1084 | OPT_BOOLEAN('D', "dump-symtab", &top.dump_symtab, |
b456bae0 | 1085 | "dump the symbol table used for profiling"), |
8c3e10eb | 1086 | OPT_INTEGER('f', "count-filter", &top.count_filter, |
b456bae0 | 1087 | "only display functions with more events than this"), |
2376c67a | 1088 | OPT_BOOLEAN('g', "group", &opts->group, |
b456bae0 | 1089 | "put the counters into a counter group"), |
2376c67a ACM |
1090 | OPT_BOOLEAN('i', "no-inherit", &opts->no_inherit, |
1091 | "child tasks do not inherit counters"), | |
1758af10 | 1092 | OPT_STRING(0, "sym-annotate", &top.sym_filter, "symbol name", |
6cff0e8d | 1093 | "symbol to annotate"), |
2376c67a ACM |
1094 | OPT_BOOLEAN('z', "zero", &top.zero, "zero history across updates"), |
1095 | OPT_UINTEGER('F', "freq", &opts->user_freq, "profile at this frequency"), | |
8c3e10eb | 1096 | OPT_INTEGER('E', "entries", &top.print_entries, |
6e53cdf1 | 1097 | "display this many functions"), |
8c3e10eb | 1098 | OPT_BOOLEAN('U', "hide_user_symbols", &top.hide_user_symbols, |
8ffcda17 | 1099 | "hide user symbols"), |
1758af10 ACM |
1100 | OPT_BOOLEAN(0, "tui", &top.use_tui, "Use the TUI interface"), |
1101 | OPT_BOOLEAN(0, "stdio", &top.use_stdio, "Use the stdio interface"), | |
c0555642 | 1102 | OPT_INCR('v', "verbose", &verbose, |
3da297a6 | 1103 | "be more verbose (show counter open errors, etc)"), |
ab81f3fd | 1104 | OPT_STRING('s', "sort", &sort_order, "key[,key2...]", |
05484298 | 1105 | "sort by key(s): pid, comm, dso, symbol, parent, weight, local_weight"), |
ab81f3fd ACM |
1106 | OPT_BOOLEAN('n', "show-nr-samples", &symbol_conf.show_nr_samples, |
1107 | "Show a column with the number of samples"), | |
2376c67a ACM |
1108 | OPT_CALLBACK_DEFAULT('G', "call-graph", &top.record_opts, |
1109 | "mode[,dump_size]", record_callchain_help, | |
1110 | &parse_callchain_opt, "fp"), | |
b21484f1 GP |
1111 | OPT_CALLBACK(0, "ignore-callees", NULL, "regex", |
1112 | "ignore callees of these functions in call graphs", | |
1113 | report_parse_ignore_callees_opt), | |
ab81f3fd ACM |
1114 | OPT_BOOLEAN(0, "show-total-period", &symbol_conf.show_total_period, |
1115 | "Show a column with the sum of periods"), | |
1116 | OPT_STRING(0, "dsos", &symbol_conf.dso_list_str, "dso[,dso...]", | |
1117 | "only consider symbols in these dsos"), | |
1118 | OPT_STRING(0, "comms", &symbol_conf.comm_list_str, "comm[,comm...]", | |
1119 | "only consider symbols in these comms"), | |
1120 | OPT_STRING(0, "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]", | |
1121 | "only consider these symbols"), | |
64c6f0c7 ACM |
1122 | OPT_BOOLEAN(0, "source", &symbol_conf.annotate_src, |
1123 | "Interleave source code with assembly code (default)"), | |
1124 | OPT_BOOLEAN(0, "asm-raw", &symbol_conf.annotate_asm_raw, | |
1125 | "Display raw encoding of assembly instructions (default)"), | |
0d3942db SB |
1126 | OPT_STRING(0, "objdump", &objdump_path, "path", |
1127 | "objdump binary to use for disassembly and annotations"), | |
64c6f0c7 ACM |
1128 | OPT_STRING('M', "disassembler-style", &disassembler_style, "disassembler style", |
1129 | "Specify disassembler style (e.g. -M intel for intel syntax)"), | |
2376c67a | 1130 | OPT_STRING('u', "uid", &target->uid_str, "user", "user to profile"), |
fa5df943 NK |
1131 | OPT_CALLBACK(0, "percent-limit", &top, "percent", |
1132 | "Don't show entries under that percent", parse_percent_limit), | |
b456bae0 | 1133 | OPT_END() |
1758af10 | 1134 | }; |
be772842 ACM |
1135 | const char * const top_usage[] = { |
1136 | "perf top [<options>]", | |
1137 | NULL | |
1138 | }; | |
b456bae0 | 1139 | |
334fe7a3 | 1140 | top.evlist = perf_evlist__new(); |
8c3e10eb | 1141 | if (top.evlist == NULL) |
361c99a6 ACM |
1142 | return -ENOMEM; |
1143 | ||
b456bae0 IM |
1144 | argc = parse_options(argc, argv, options, top_usage, 0); |
1145 | if (argc) | |
1146 | usage_with_options(top_usage, options); | |
1147 | ||
ab81f3fd ACM |
1148 | if (sort_order == default_sort_order) |
1149 | sort_order = "dso,symbol"; | |
1150 | ||
55309985 NK |
1151 | if (setup_sorting() < 0) |
1152 | usage_with_options(top_usage, options); | |
ab81f3fd | 1153 | |
3a5714f8 NK |
1154 | /* display thread wants entries to be collapsed in a different tree */ |
1155 | sort__need_collapse = 1; | |
1156 | ||
1758af10 | 1157 | if (top.use_stdio) |
c0443df1 | 1158 | use_browser = 0; |
1758af10 | 1159 | else if (top.use_tui) |
c0443df1 ACM |
1160 | use_browser = 1; |
1161 | ||
1162 | setup_browser(false); | |
1163 | ||
2376c67a | 1164 | status = perf_target__validate(target); |
16ad2ffb | 1165 | if (status) { |
2376c67a | 1166 | perf_target__strerror(target, status, errbuf, BUFSIZ); |
16ad2ffb NK |
1167 | ui__warning("%s", errbuf); |
1168 | } | |
1169 | ||
2376c67a | 1170 | status = perf_target__parse_uid(target); |
16ad2ffb NK |
1171 | if (status) { |
1172 | int saved_errno = errno; | |
4bd0f2d2 | 1173 | |
2376c67a | 1174 | perf_target__strerror(target, status, errbuf, BUFSIZ); |
3780f488 | 1175 | ui__error("%s", errbuf); |
16ad2ffb NK |
1176 | |
1177 | status = -saved_errno; | |
0d37aa34 | 1178 | goto out_delete_evlist; |
16ad2ffb | 1179 | } |
0d37aa34 | 1180 | |
2376c67a ACM |
1181 | if (perf_target__none(target)) |
1182 | target->system_wide = true; | |
10b47d54 | 1183 | |
2376c67a | 1184 | if (perf_evlist__create_maps(top.evlist, target) < 0) |
7e2ed097 ACM |
1185 | usage_with_options(top_usage, options); |
1186 | ||
8c3e10eb ACM |
1187 | if (!top.evlist->nr_entries && |
1188 | perf_evlist__add_default(top.evlist) < 0) { | |
3780f488 | 1189 | ui__error("Not enough memory for event selector list\n"); |
0de233b9 | 1190 | goto out_delete_maps; |
69aad6f1 | 1191 | } |
5a8e5a30 | 1192 | |
d04b35f8 ACM |
1193 | symbol_conf.nr_events = top.evlist->nr_entries; |
1194 | ||
8c3e10eb ACM |
1195 | if (top.delay_secs < 1) |
1196 | top.delay_secs = 1; | |
2f335a02 | 1197 | |
2376c67a ACM |
1198 | if (opts->user_interval != ULLONG_MAX) |
1199 | opts->default_interval = opts->user_interval; | |
1200 | if (opts->user_freq != UINT_MAX) | |
1201 | opts->freq = opts->user_freq; | |
1202 | ||
7e4ff9e3 MG |
1203 | /* |
1204 | * User specified count overrides default frequency. | |
1205 | */ | |
2376c67a ACM |
1206 | if (opts->default_interval) |
1207 | opts->freq = 0; | |
1208 | else if (opts->freq) { | |
1209 | opts->default_interval = opts->freq; | |
7e4ff9e3 | 1210 | } else { |
3780f488 | 1211 | ui__error("frequency and count are zero, aborting\n"); |
2376c67a | 1212 | status = -EINVAL; |
0de233b9 | 1213 | goto out_delete_maps; |
69aad6f1 ACM |
1214 | } |
1215 | ||
0c21f736 | 1216 | top.sym_evsel = perf_evlist__first(top.evlist); |
cc841580 | 1217 | |
ab81f3fd | 1218 | symbol_conf.priv_size = sizeof(struct annotation); |
69aad6f1 ACM |
1219 | |
1220 | symbol_conf.try_vmlinux_path = (symbol_conf.vmlinux_name == NULL); | |
1221 | if (symbol__init() < 0) | |
1222 | return -1; | |
1223 | ||
08e71542 | 1224 | sort__setup_elide(stdout); |
ab81f3fd | 1225 | |
1758af10 | 1226 | get_term_dimensions(&top.winsize); |
8c3e10eb | 1227 | if (top.print_entries == 0) { |
1758af10 ACM |
1228 | struct sigaction act = { |
1229 | .sa_sigaction = perf_top__sig_winch, | |
1230 | .sa_flags = SA_SIGINFO, | |
1231 | }; | |
1232 | perf_top__update_print_entries(&top); | |
1233 | sigaction(SIGWINCH, &act, NULL); | |
3b6ed988 ACM |
1234 | } |
1235 | ||
1758af10 | 1236 | status = __cmd_top(&top); |
806fb630 | 1237 | |
0de233b9 ACM |
1238 | out_delete_maps: |
1239 | perf_evlist__delete_maps(top.evlist); | |
0d37aa34 | 1240 | out_delete_evlist: |
8c3e10eb | 1241 | perf_evlist__delete(top.evlist); |
69aad6f1 ACM |
1242 | |
1243 | return status; | |
b456bae0 | 1244 | } |