Commit | Line | Data |
---|---|---|
abaff32a | 1 | /* |
bf9e1876 IM |
2 | * builtin-record.c |
3 | * | |
4 | * Builtin record command: Record the profile of a workload | |
5 | * (or a CPU, or a PID) into the perf.data output file - for | |
6 | * later analysis via perf report. | |
abaff32a | 7 | */ |
16f762a2 | 8 | #include "builtin.h" |
bf9e1876 IM |
9 | |
10 | #include "perf.h" | |
11 | ||
6122e4e4 | 12 | #include "util/build-id.h" |
6eda5838 | 13 | #include "util/util.h" |
0e9b20b8 | 14 | #include "util/parse-options.h" |
8ad8db37 | 15 | #include "util/parse-events.h" |
6eda5838 | 16 | |
7c6a1c65 | 17 | #include "util/header.h" |
66e274f3 | 18 | #include "util/event.h" |
361c99a6 | 19 | #include "util/evlist.h" |
69aad6f1 | 20 | #include "util/evsel.h" |
8f28827a | 21 | #include "util/debug.h" |
94c744b6 | 22 | #include "util/session.h" |
45694aa7 | 23 | #include "util/tool.h" |
8d06367f | 24 | #include "util/symbol.h" |
a12b51c4 | 25 | #include "util/cpumap.h" |
fd78260b | 26 | #include "util/thread_map.h" |
7c6a1c65 | 27 | |
97124d5e | 28 | #include <unistd.h> |
de9ac07b | 29 | #include <sched.h> |
a41794cd | 30 | #include <sys/mman.h> |
de9ac07b | 31 | |
78da39fa BR |
32 | #ifndef HAVE_ON_EXIT |
33 | #ifndef ATEXIT_MAX | |
34 | #define ATEXIT_MAX 32 | |
35 | #endif | |
36 | static int __on_exit_count = 0; | |
37 | typedef void (*on_exit_func_t) (int, void *); | |
38 | static on_exit_func_t __on_exit_funcs[ATEXIT_MAX]; | |
39 | static void *__on_exit_args[ATEXIT_MAX]; | |
40 | static int __exitcode = 0; | |
41 | static void __handle_on_exit_funcs(void); | |
42 | static int on_exit(on_exit_func_t function, void *arg); | |
43 | #define exit(x) (exit)(__exitcode = (x)) | |
44 | ||
45 | static int on_exit(on_exit_func_t function, void *arg) | |
46 | { | |
47 | if (__on_exit_count == ATEXIT_MAX) | |
48 | return -ENOMEM; | |
49 | else if (__on_exit_count == 0) | |
50 | atexit(__handle_on_exit_funcs); | |
51 | __on_exit_funcs[__on_exit_count] = function; | |
52 | __on_exit_args[__on_exit_count++] = arg; | |
53 | return 0; | |
54 | } | |
55 | ||
56 | static void __handle_on_exit_funcs(void) | |
57 | { | |
58 | int i; | |
59 | for (i = 0; i < __on_exit_count; i++) | |
60 | __on_exit_funcs[i] (__exitcode, __on_exit_args[i]); | |
61 | } | |
62 | #endif | |
63 | ||
d20deb64 | 64 | struct perf_record { |
45694aa7 | 65 | struct perf_tool tool; |
d20deb64 ACM |
66 | struct perf_record_opts opts; |
67 | u64 bytes_written; | |
68 | const char *output_name; | |
69 | struct perf_evlist *evlist; | |
70 | struct perf_session *session; | |
71 | const char *progname; | |
72 | int output; | |
73 | unsigned int page_size; | |
74 | int realtime_prio; | |
d20deb64 ACM |
75 | bool no_buildid; |
76 | bool no_buildid_cache; | |
d20deb64 ACM |
77 | long samples; |
78 | off_t post_processing_offset; | |
0f82ebc4 | 79 | }; |
a21ca2ca | 80 | |
d20deb64 | 81 | static void advance_output(struct perf_record *rec, size_t size) |
9215545e | 82 | { |
d20deb64 | 83 | rec->bytes_written += size; |
9215545e TZ |
84 | } |
85 | ||
8d3eca20 | 86 | static int write_output(struct perf_record *rec, void *buf, size_t size) |
f5970550 PZ |
87 | { |
88 | while (size) { | |
d20deb64 | 89 | int ret = write(rec->output, buf, size); |
f5970550 | 90 | |
8d3eca20 DA |
91 | if (ret < 0) { |
92 | pr_err("failed to write\n"); | |
93 | return -1; | |
94 | } | |
f5970550 PZ |
95 | |
96 | size -= ret; | |
97 | buf += ret; | |
98 | ||
d20deb64 | 99 | rec->bytes_written += ret; |
f5970550 | 100 | } |
8d3eca20 DA |
101 | |
102 | return 0; | |
f5970550 PZ |
103 | } |
104 | ||
45694aa7 | 105 | static int process_synthesized_event(struct perf_tool *tool, |
d20deb64 | 106 | union perf_event *event, |
1d037ca1 IT |
107 | struct perf_sample *sample __maybe_unused, |
108 | struct machine *machine __maybe_unused) | |
234fbbf5 | 109 | { |
45694aa7 | 110 | struct perf_record *rec = container_of(tool, struct perf_record, tool); |
8d3eca20 DA |
111 | if (write_output(rec, event, event->header.size) < 0) |
112 | return -1; | |
113 | ||
234fbbf5 ACM |
114 | return 0; |
115 | } | |
116 | ||
8d3eca20 | 117 | static int perf_record__mmap_read(struct perf_record *rec, |
d20deb64 | 118 | struct perf_mmap *md) |
de9ac07b | 119 | { |
744bd8aa | 120 | unsigned int head = perf_mmap__read_head(md); |
de9ac07b | 121 | unsigned int old = md->prev; |
d20deb64 | 122 | unsigned char *data = md->base + rec->page_size; |
de9ac07b PZ |
123 | unsigned long size; |
124 | void *buf; | |
8d3eca20 | 125 | int rc = 0; |
de9ac07b | 126 | |
dc82009a | 127 | if (old == head) |
8d3eca20 | 128 | return 0; |
dc82009a | 129 | |
d20deb64 | 130 | rec->samples++; |
de9ac07b PZ |
131 | |
132 | size = head - old; | |
133 | ||
134 | if ((old & md->mask) + size != (head & md->mask)) { | |
135 | buf = &data[old & md->mask]; | |
136 | size = md->mask + 1 - (old & md->mask); | |
137 | old += size; | |
021e9f47 | 138 | |
8d3eca20 DA |
139 | if (write_output(rec, buf, size) < 0) { |
140 | rc = -1; | |
141 | goto out; | |
142 | } | |
de9ac07b PZ |
143 | } |
144 | ||
145 | buf = &data[old & md->mask]; | |
146 | size = head - old; | |
147 | old += size; | |
021e9f47 | 148 | |
8d3eca20 DA |
149 | if (write_output(rec, buf, size) < 0) { |
150 | rc = -1; | |
151 | goto out; | |
152 | } | |
de9ac07b PZ |
153 | |
154 | md->prev = old; | |
115d2d89 | 155 | perf_mmap__write_tail(md, old); |
8d3eca20 DA |
156 | |
157 | out: | |
158 | return rc; | |
de9ac07b PZ |
159 | } |
160 | ||
161 | static volatile int done = 0; | |
f7b7c26e | 162 | static volatile int signr = -1; |
33e49ea7 | 163 | static volatile int child_finished = 0; |
de9ac07b | 164 | |
16c8a109 | 165 | static void sig_handler(int sig) |
de9ac07b | 166 | { |
33e49ea7 AK |
167 | if (sig == SIGCHLD) |
168 | child_finished = 1; | |
169 | ||
16c8a109 | 170 | done = 1; |
f7b7c26e PZ |
171 | signr = sig; |
172 | } | |
173 | ||
1d037ca1 | 174 | static void perf_record__sig_exit(int exit_status __maybe_unused, void *arg) |
f7b7c26e | 175 | { |
d20deb64 | 176 | struct perf_record *rec = arg; |
33e49ea7 AK |
177 | int status; |
178 | ||
d20deb64 | 179 | if (rec->evlist->workload.pid > 0) { |
33e49ea7 | 180 | if (!child_finished) |
d20deb64 | 181 | kill(rec->evlist->workload.pid, SIGTERM); |
33e49ea7 AK |
182 | |
183 | wait(&status); | |
184 | if (WIFSIGNALED(status)) | |
d20deb64 | 185 | psignal(WTERMSIG(status), rec->progname); |
33e49ea7 | 186 | } |
933da83a | 187 | |
18483b81 | 188 | if (signr == -1 || signr == SIGUSR1) |
f7b7c26e PZ |
189 | return; |
190 | ||
191 | signal(signr, SIG_DFL); | |
de9ac07b PZ |
192 | } |
193 | ||
8d3eca20 | 194 | static int perf_record__open(struct perf_record *rec) |
dd7927f4 | 195 | { |
56e52e85 | 196 | char msg[512]; |
6a4bb04c | 197 | struct perf_evsel *pos; |
d20deb64 ACM |
198 | struct perf_evlist *evlist = rec->evlist; |
199 | struct perf_session *session = rec->session; | |
200 | struct perf_record_opts *opts = &rec->opts; | |
8d3eca20 | 201 | int rc = 0; |
dd7927f4 | 202 | |
f77a9518 | 203 | perf_evlist__config(evlist, opts); |
cac21425 | 204 | |
dd7927f4 | 205 | list_for_each_entry(pos, &evlist->entries, node) { |
dd7927f4 | 206 | try_again: |
6a4bb04c | 207 | if (perf_evsel__open(pos, evlist->cpus, evlist->threads) < 0) { |
56e52e85 | 208 | if (perf_evsel__fallback(pos, errno, msg, sizeof(msg))) { |
d6d901c2 | 209 | if (verbose) |
c0a54341 | 210 | ui__warning("%s\n", msg); |
d6d901c2 ZY |
211 | goto try_again; |
212 | } | |
ca6a4258 | 213 | |
56e52e85 ACM |
214 | rc = -errno; |
215 | perf_evsel__open_strerror(pos, &opts->target, | |
216 | errno, msg, sizeof(msg)); | |
217 | ui__error("%s\n", msg); | |
8d3eca20 | 218 | goto out; |
c171b552 LZ |
219 | } |
220 | } | |
a43d3f08 | 221 | |
1491a632 | 222 | if (perf_evlist__apply_filters(evlist)) { |
0a102479 FW |
223 | error("failed to set filter with %d (%s)\n", errno, |
224 | strerror(errno)); | |
8d3eca20 DA |
225 | rc = -1; |
226 | goto out; | |
0a102479 FW |
227 | } |
228 | ||
18e60939 | 229 | if (perf_evlist__mmap(evlist, opts->mmap_pages, false) < 0) { |
8d3eca20 DA |
230 | if (errno == EPERM) { |
231 | pr_err("Permission error mapping pages.\n" | |
232 | "Consider increasing " | |
233 | "/proc/sys/kernel/perf_event_mlock_kb,\n" | |
234 | "or try again with a smaller value of -m/--mmap_pages.\n" | |
235 | "(current value: %d)\n", opts->mmap_pages); | |
236 | rc = -errno; | |
0089fa98 JO |
237 | } else if (!is_power_of_2(opts->mmap_pages) && |
238 | (opts->mmap_pages != UINT_MAX)) { | |
8d3eca20 DA |
239 | pr_err("--mmap_pages/-m value must be a power of two."); |
240 | rc = -EINVAL; | |
241 | } else { | |
242 | pr_err("failed to mmap with %d (%s)\n", errno, strerror(errno)); | |
243 | rc = -errno; | |
244 | } | |
245 | goto out; | |
18e60939 | 246 | } |
0a27d7f9 | 247 | |
563aecb2 | 248 | session->evlist = evlist; |
7b56cce2 | 249 | perf_session__set_id_hdr_size(session); |
8d3eca20 DA |
250 | out: |
251 | return rc; | |
16c8a109 PZ |
252 | } |
253 | ||
d20deb64 | 254 | static int process_buildids(struct perf_record *rec) |
6122e4e4 | 255 | { |
d20deb64 | 256 | u64 size = lseek(rec->output, 0, SEEK_CUR); |
6122e4e4 | 257 | |
9f591fd7 ACM |
258 | if (size == 0) |
259 | return 0; | |
260 | ||
d20deb64 ACM |
261 | rec->session->fd = rec->output; |
262 | return __perf_session__process_events(rec->session, rec->post_processing_offset, | |
263 | size - rec->post_processing_offset, | |
6122e4e4 ACM |
264 | size, &build_id__mark_dso_hit_ops); |
265 | } | |
266 | ||
8d3eca20 | 267 | static void perf_record__exit(int status, void *arg) |
f5970550 | 268 | { |
d20deb64 ACM |
269 | struct perf_record *rec = arg; |
270 | ||
8d3eca20 DA |
271 | if (status != 0) |
272 | return; | |
273 | ||
d20deb64 ACM |
274 | if (!rec->opts.pipe_output) { |
275 | rec->session->header.data_size += rec->bytes_written; | |
276 | ||
277 | if (!rec->no_buildid) | |
278 | process_buildids(rec); | |
279 | perf_session__write_header(rec->session, rec->evlist, | |
280 | rec->output, true); | |
281 | perf_session__delete(rec->session); | |
282 | perf_evlist__delete(rec->evlist); | |
d65a458b | 283 | symbol__exit(); |
c7929e47 | 284 | } |
f5970550 PZ |
285 | } |
286 | ||
8115d60c | 287 | static void perf_event__synthesize_guest_os(struct machine *machine, void *data) |
a1645ce1 ZY |
288 | { |
289 | int err; | |
45694aa7 | 290 | struct perf_tool *tool = data; |
a1645ce1 ZY |
291 | /* |
292 | *As for guest kernel when processing subcommand record&report, | |
293 | *we arrange module mmap prior to guest kernel mmap and trigger | |
294 | *a preload dso because default guest module symbols are loaded | |
295 | *from guest kallsyms instead of /lib/modules/XXX/XXX. This | |
296 | *method is used to avoid symbol missing when the first addr is | |
297 | *in module instead of in guest kernel. | |
298 | */ | |
45694aa7 | 299 | err = perf_event__synthesize_modules(tool, process_synthesized_event, |
743eb868 | 300 | machine); |
a1645ce1 ZY |
301 | if (err < 0) |
302 | pr_err("Couldn't record guest kernel [%d]'s reference" | |
23346f21 | 303 | " relocation symbol.\n", machine->pid); |
a1645ce1 | 304 | |
a1645ce1 ZY |
305 | /* |
306 | * We use _stext for guest kernel because guest kernel's /proc/kallsyms | |
307 | * have no _text sometimes. | |
308 | */ | |
45694aa7 | 309 | err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event, |
743eb868 | 310 | machine, "_text"); |
a1645ce1 | 311 | if (err < 0) |
45694aa7 | 312 | err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event, |
743eb868 | 313 | machine, "_stext"); |
a1645ce1 ZY |
314 | if (err < 0) |
315 | pr_err("Couldn't record guest kernel [%d]'s reference" | |
23346f21 | 316 | " relocation symbol.\n", machine->pid); |
a1645ce1 ZY |
317 | } |
318 | ||
98402807 FW |
319 | static struct perf_event_header finished_round_event = { |
320 | .size = sizeof(struct perf_event_header), | |
321 | .type = PERF_RECORD_FINISHED_ROUND, | |
322 | }; | |
323 | ||
8d3eca20 | 324 | static int perf_record__mmap_read_all(struct perf_record *rec) |
98402807 | 325 | { |
0e2e63dd | 326 | int i; |
8d3eca20 | 327 | int rc = 0; |
98402807 | 328 | |
d20deb64 | 329 | for (i = 0; i < rec->evlist->nr_mmaps; i++) { |
8d3eca20 DA |
330 | if (rec->evlist->mmap[i].base) { |
331 | if (perf_record__mmap_read(rec, &rec->evlist->mmap[i]) != 0) { | |
332 | rc = -1; | |
333 | goto out; | |
334 | } | |
335 | } | |
98402807 FW |
336 | } |
337 | ||
2eeaaa09 | 338 | if (perf_header__has_feat(&rec->session->header, HEADER_TRACING_DATA)) |
8d3eca20 DA |
339 | rc = write_output(rec, &finished_round_event, |
340 | sizeof(finished_round_event)); | |
341 | ||
342 | out: | |
343 | return rc; | |
98402807 FW |
344 | } |
345 | ||
d20deb64 | 346 | static int __cmd_record(struct perf_record *rec, int argc, const char **argv) |
16c8a109 | 347 | { |
abaff32a | 348 | struct stat st; |
abaff32a | 349 | int flags; |
781ba9d2 | 350 | int err, output, feat; |
8b412664 | 351 | unsigned long waking = 0; |
46be604b | 352 | const bool forks = argc > 0; |
23346f21 | 353 | struct machine *machine; |
45694aa7 | 354 | struct perf_tool *tool = &rec->tool; |
d20deb64 ACM |
355 | struct perf_record_opts *opts = &rec->opts; |
356 | struct perf_evlist *evsel_list = rec->evlist; | |
357 | const char *output_name = rec->output_name; | |
358 | struct perf_session *session; | |
2711926a | 359 | bool disabled = false; |
de9ac07b | 360 | |
d20deb64 | 361 | rec->progname = argv[0]; |
33e49ea7 | 362 | |
d20deb64 | 363 | rec->page_size = sysconf(_SC_PAGE_SIZE); |
de9ac07b | 364 | |
d20deb64 | 365 | on_exit(perf_record__sig_exit, rec); |
f5970550 PZ |
366 | signal(SIGCHLD, sig_handler); |
367 | signal(SIGINT, sig_handler); | |
18483b81 | 368 | signal(SIGUSR1, sig_handler); |
804f7ac7 | 369 | signal(SIGTERM, sig_handler); |
f5970550 | 370 | |
d7065adb FBH |
371 | if (!output_name) { |
372 | if (!fstat(STDOUT_FILENO, &st) && S_ISFIFO(st.st_mode)) | |
d20deb64 | 373 | opts->pipe_output = true; |
d7065adb | 374 | else |
d20deb64 | 375 | rec->output_name = output_name = "perf.data"; |
d7065adb FBH |
376 | } |
377 | if (output_name) { | |
378 | if (!strcmp(output_name, "-")) | |
d20deb64 | 379 | opts->pipe_output = true; |
d7065adb | 380 | else if (!stat(output_name, &st) && st.st_size) { |
563aecb2 JO |
381 | char oldname[PATH_MAX]; |
382 | snprintf(oldname, sizeof(oldname), "%s.old", | |
383 | output_name); | |
384 | unlink(oldname); | |
385 | rename(output_name, oldname); | |
266e0e21 | 386 | } |
97124d5e PZ |
387 | } |
388 | ||
563aecb2 | 389 | flags = O_CREAT|O_RDWR|O_TRUNC; |
abaff32a | 390 | |
d20deb64 | 391 | if (opts->pipe_output) |
529870e3 TZ |
392 | output = STDOUT_FILENO; |
393 | else | |
394 | output = open(output_name, flags, S_IRUSR | S_IWUSR); | |
de9ac07b PZ |
395 | if (output < 0) { |
396 | perror("failed to create output file"); | |
8d3eca20 | 397 | return -1; |
de9ac07b PZ |
398 | } |
399 | ||
d20deb64 ACM |
400 | rec->output = output; |
401 | ||
7865e817 | 402 | session = perf_session__new(output_name, O_WRONLY, |
563aecb2 | 403 | true, false, NULL); |
94c744b6 | 404 | if (session == NULL) { |
a9a70bbc ACM |
405 | pr_err("Not enough memory for reading perf file header\n"); |
406 | return -1; | |
407 | } | |
408 | ||
d20deb64 ACM |
409 | rec->session = session; |
410 | ||
781ba9d2 RR |
411 | for (feat = HEADER_FIRST_FEATURE; feat < HEADER_LAST_FEATURE; feat++) |
412 | perf_header__set_feat(&session->header, feat); | |
413 | ||
414 | if (rec->no_buildid) | |
415 | perf_header__clear_feat(&session->header, HEADER_BUILD_ID); | |
416 | ||
417 | if (!have_tracepoints(&evsel_list->entries)) | |
2eeaaa09 | 418 | perf_header__clear_feat(&session->header, HEADER_TRACING_DATA); |
baa2f6ce | 419 | |
330aa675 SE |
420 | if (!rec->opts.branch_stack) |
421 | perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK); | |
422 | ||
d4db3f16 | 423 | if (forks) { |
6ef73ec4 | 424 | err = perf_evlist__prepare_workload(evsel_list, &opts->target, |
55e162ea NK |
425 | argv, opts->pipe_output, |
426 | true); | |
35b9d88e ACM |
427 | if (err < 0) { |
428 | pr_err("Couldn't run the workload!\n"); | |
429 | goto out_delete_session; | |
856e9660 | 430 | } |
856e9660 PZ |
431 | } |
432 | ||
8d3eca20 DA |
433 | if (perf_record__open(rec) != 0) { |
434 | err = -1; | |
435 | goto out_delete_session; | |
436 | } | |
de9ac07b | 437 | |
a8bb559b NK |
438 | if (!evsel_list->nr_groups) |
439 | perf_header__clear_feat(&session->header, HEADER_GROUP_DESC); | |
440 | ||
712a4b60 | 441 | /* |
d20deb64 | 442 | * perf_session__delete(session) will be called at perf_record__exit() |
712a4b60 | 443 | */ |
d20deb64 | 444 | on_exit(perf_record__exit, rec); |
712a4b60 | 445 | |
d20deb64 | 446 | if (opts->pipe_output) { |
529870e3 TZ |
447 | err = perf_header__write_pipe(output); |
448 | if (err < 0) | |
8d3eca20 | 449 | goto out_delete_session; |
563aecb2 | 450 | } else { |
a91e5431 ACM |
451 | err = perf_session__write_header(session, evsel_list, |
452 | output, false); | |
d5eed904 | 453 | if (err < 0) |
8d3eca20 | 454 | goto out_delete_session; |
56b03f3c ACM |
455 | } |
456 | ||
d3665498 | 457 | if (!rec->no_buildid |
e20960c0 | 458 | && !perf_header__has_feat(&session->header, HEADER_BUILD_ID)) { |
d3665498 | 459 | pr_err("Couldn't generate buildids. " |
e20960c0 | 460 | "Use --no-buildid to profile anyway.\n"); |
8d3eca20 DA |
461 | err = -1; |
462 | goto out_delete_session; | |
e20960c0 RR |
463 | } |
464 | ||
d20deb64 | 465 | rec->post_processing_offset = lseek(output, 0, SEEK_CUR); |
6122e4e4 | 466 | |
34ba5122 | 467 | machine = &session->machines.host; |
743eb868 | 468 | |
d20deb64 | 469 | if (opts->pipe_output) { |
45694aa7 | 470 | err = perf_event__synthesize_attrs(tool, session, |
d20deb64 | 471 | process_synthesized_event); |
2c46dbb5 TZ |
472 | if (err < 0) { |
473 | pr_err("Couldn't synthesize attrs.\n"); | |
8d3eca20 | 474 | goto out_delete_session; |
2c46dbb5 | 475 | } |
cd19a035 | 476 | |
361c99a6 | 477 | if (have_tracepoints(&evsel_list->entries)) { |
63e0c771 TZ |
478 | /* |
479 | * FIXME err <= 0 here actually means that | |
480 | * there were no tracepoints so its not really | |
481 | * an error, just that we don't need to | |
482 | * synthesize anything. We really have to | |
483 | * return this more properly and also | |
484 | * propagate errors that now are calling die() | |
485 | */ | |
45694aa7 | 486 | err = perf_event__synthesize_tracing_data(tool, output, evsel_list, |
743eb868 | 487 | process_synthesized_event); |
63e0c771 TZ |
488 | if (err <= 0) { |
489 | pr_err("Couldn't record tracing data.\n"); | |
8d3eca20 | 490 | goto out_delete_session; |
63e0c771 | 491 | } |
d20deb64 | 492 | advance_output(rec, err); |
63e0c771 | 493 | } |
2c46dbb5 TZ |
494 | } |
495 | ||
45694aa7 | 496 | err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event, |
743eb868 | 497 | machine, "_text"); |
70162138 | 498 | if (err < 0) |
45694aa7 | 499 | err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event, |
743eb868 | 500 | machine, "_stext"); |
c1a3a4b9 ACM |
501 | if (err < 0) |
502 | pr_err("Couldn't record kernel reference relocation symbol\n" | |
503 | "Symbol resolution may be skewed if relocation was used (e.g. kexec).\n" | |
504 | "Check /proc/kallsyms permission or run as root.\n"); | |
b7cece76 | 505 | |
45694aa7 | 506 | err = perf_event__synthesize_modules(tool, process_synthesized_event, |
743eb868 | 507 | machine); |
c1a3a4b9 ACM |
508 | if (err < 0) |
509 | pr_err("Couldn't record kernel module information.\n" | |
510 | "Symbol resolution may be skewed if relocation was used (e.g. kexec).\n" | |
511 | "Check /proc/modules permission or run as root.\n"); | |
512 | ||
7e383de4 | 513 | if (perf_guest) { |
876650e6 ACM |
514 | machines__process_guests(&session->machines, |
515 | perf_event__synthesize_guest_os, tool); | |
7e383de4 | 516 | } |
7c6a1c65 | 517 | |
e4dd45fe | 518 | if (perf_target__has_task(&opts->target)) |
8d3eca20 | 519 | err = perf_event__synthesize_thread_map(tool, evsel_list->threads, |
7c940c18 | 520 | process_synthesized_event, |
743eb868 | 521 | machine); |
e4dd45fe | 522 | else if (perf_target__has_cpu(&opts->target)) |
8d3eca20 | 523 | err = perf_event__synthesize_threads(tool, process_synthesized_event, |
743eb868 | 524 | machine); |
e4dd45fe JO |
525 | else /* command specified */ |
526 | err = 0; | |
7c6a1c65 | 527 | |
8d3eca20 DA |
528 | if (err != 0) |
529 | goto out_delete_session; | |
530 | ||
d20deb64 | 531 | if (rec->realtime_prio) { |
de9ac07b PZ |
532 | struct sched_param param; |
533 | ||
d20deb64 | 534 | param.sched_priority = rec->realtime_prio; |
de9ac07b | 535 | if (sched_setscheduler(0, SCHED_FIFO, ¶m)) { |
6beba7ad | 536 | pr_err("Could not set realtime priority.\n"); |
8d3eca20 DA |
537 | err = -1; |
538 | goto out_delete_session; | |
de9ac07b PZ |
539 | } |
540 | } | |
541 | ||
774cb499 JO |
542 | /* |
543 | * When perf is starting the traced process, all the events | |
544 | * (apart from group members) have enable_on_exec=1 set, | |
545 | * so don't spoil it by prematurely enabling them. | |
546 | */ | |
547 | if (!perf_target__none(&opts->target)) | |
548 | perf_evlist__enable(evsel_list); | |
764e16a3 | 549 | |
856e9660 PZ |
550 | /* |
551 | * Let the child rip | |
552 | */ | |
d4db3f16 | 553 | if (forks) |
35b9d88e | 554 | perf_evlist__start_workload(evsel_list); |
856e9660 | 555 | |
649c48a9 | 556 | for (;;) { |
d20deb64 | 557 | int hits = rec->samples; |
de9ac07b | 558 | |
8d3eca20 DA |
559 | if (perf_record__mmap_read_all(rec) < 0) { |
560 | err = -1; | |
561 | goto out_delete_session; | |
562 | } | |
de9ac07b | 563 | |
d20deb64 | 564 | if (hits == rec->samples) { |
649c48a9 PZ |
565 | if (done) |
566 | break; | |
5c581041 | 567 | err = poll(evsel_list->pollfd, evsel_list->nr_fds, -1); |
8b412664 PZ |
568 | waking++; |
569 | } | |
570 | ||
774cb499 JO |
571 | /* |
572 | * When perf is starting the traced process, at the end events | |
573 | * die with the process and we wait for that. Thus no need to | |
574 | * disable events in this case. | |
575 | */ | |
2711926a | 576 | if (done && !disabled && !perf_target__none(&opts->target)) { |
4152ab37 | 577 | perf_evlist__disable(evsel_list); |
2711926a JO |
578 | disabled = true; |
579 | } | |
de9ac07b PZ |
580 | } |
581 | ||
18483b81 | 582 | if (quiet || signr == SIGUSR1) |
b44308f5 ACM |
583 | return 0; |
584 | ||
8b412664 PZ |
585 | fprintf(stderr, "[ perf record: Woken up %ld times to write data ]\n", waking); |
586 | ||
021e9f47 IM |
587 | /* |
588 | * Approximate RIP event size: 24 bytes. | |
589 | */ | |
590 | fprintf(stderr, | |
9486aa38 | 591 | "[ perf record: Captured and wrote %.3f MB %s (~%" PRIu64 " samples) ]\n", |
d20deb64 | 592 | (double)rec->bytes_written / 1024.0 / 1024.0, |
021e9f47 | 593 | output_name, |
d20deb64 | 594 | rec->bytes_written / 24); |
addc2785 | 595 | |
de9ac07b | 596 | return 0; |
39d17dac ACM |
597 | |
598 | out_delete_session: | |
599 | perf_session__delete(session); | |
600 | return err; | |
de9ac07b | 601 | } |
0e9b20b8 | 602 | |
bdfebd84 RAV |
603 | #define BRANCH_OPT(n, m) \ |
604 | { .name = n, .mode = (m) } | |
605 | ||
606 | #define BRANCH_END { .name = NULL } | |
607 | ||
608 | struct branch_mode { | |
609 | const char *name; | |
610 | int mode; | |
611 | }; | |
612 | ||
613 | static const struct branch_mode branch_modes[] = { | |
614 | BRANCH_OPT("u", PERF_SAMPLE_BRANCH_USER), | |
615 | BRANCH_OPT("k", PERF_SAMPLE_BRANCH_KERNEL), | |
616 | BRANCH_OPT("hv", PERF_SAMPLE_BRANCH_HV), | |
617 | BRANCH_OPT("any", PERF_SAMPLE_BRANCH_ANY), | |
618 | BRANCH_OPT("any_call", PERF_SAMPLE_BRANCH_ANY_CALL), | |
619 | BRANCH_OPT("any_ret", PERF_SAMPLE_BRANCH_ANY_RETURN), | |
620 | BRANCH_OPT("ind_call", PERF_SAMPLE_BRANCH_IND_CALL), | |
0126d493 AK |
621 | BRANCH_OPT("abort_tx", PERF_SAMPLE_BRANCH_ABORT_TX), |
622 | BRANCH_OPT("in_tx", PERF_SAMPLE_BRANCH_IN_TX), | |
623 | BRANCH_OPT("no_tx", PERF_SAMPLE_BRANCH_NO_TX), | |
bdfebd84 RAV |
624 | BRANCH_END |
625 | }; | |
626 | ||
627 | static int | |
a5aabdac | 628 | parse_branch_stack(const struct option *opt, const char *str, int unset) |
bdfebd84 RAV |
629 | { |
630 | #define ONLY_PLM \ | |
631 | (PERF_SAMPLE_BRANCH_USER |\ | |
632 | PERF_SAMPLE_BRANCH_KERNEL |\ | |
633 | PERF_SAMPLE_BRANCH_HV) | |
634 | ||
635 | uint64_t *mode = (uint64_t *)opt->value; | |
636 | const struct branch_mode *br; | |
a5aabdac | 637 | char *s, *os = NULL, *p; |
bdfebd84 RAV |
638 | int ret = -1; |
639 | ||
a5aabdac SE |
640 | if (unset) |
641 | return 0; | |
bdfebd84 | 642 | |
a5aabdac SE |
643 | /* |
644 | * cannot set it twice, -b + --branch-filter for instance | |
645 | */ | |
646 | if (*mode) | |
bdfebd84 RAV |
647 | return -1; |
648 | ||
a5aabdac SE |
649 | /* str may be NULL in case no arg is passed to -b */ |
650 | if (str) { | |
651 | /* because str is read-only */ | |
652 | s = os = strdup(str); | |
653 | if (!s) | |
654 | return -1; | |
655 | ||
656 | for (;;) { | |
657 | p = strchr(s, ','); | |
658 | if (p) | |
659 | *p = '\0'; | |
660 | ||
661 | for (br = branch_modes; br->name; br++) { | |
662 | if (!strcasecmp(s, br->name)) | |
663 | break; | |
664 | } | |
665 | if (!br->name) { | |
666 | ui__warning("unknown branch filter %s," | |
667 | " check man page\n", s); | |
668 | goto error; | |
669 | } | |
bdfebd84 | 670 | |
a5aabdac | 671 | *mode |= br->mode; |
bdfebd84 | 672 | |
a5aabdac SE |
673 | if (!p) |
674 | break; | |
bdfebd84 | 675 | |
a5aabdac SE |
676 | s = p + 1; |
677 | } | |
bdfebd84 RAV |
678 | } |
679 | ret = 0; | |
680 | ||
a5aabdac | 681 | /* default to any branch */ |
bdfebd84 | 682 | if ((*mode & ~ONLY_PLM) == 0) { |
a5aabdac | 683 | *mode = PERF_SAMPLE_BRANCH_ANY; |
bdfebd84 RAV |
684 | } |
685 | error: | |
686 | free(os); | |
687 | return ret; | |
688 | } | |
689 | ||
95485b1c | 690 | #ifdef LIBUNWIND_SUPPORT |
26d33022 JO |
691 | static int get_stack_size(char *str, unsigned long *_size) |
692 | { | |
693 | char *endptr; | |
694 | unsigned long size; | |
695 | unsigned long max_size = round_down(USHRT_MAX, sizeof(u64)); | |
696 | ||
697 | size = strtoul(str, &endptr, 0); | |
698 | ||
699 | do { | |
700 | if (*endptr) | |
701 | break; | |
702 | ||
703 | size = round_up(size, sizeof(u64)); | |
704 | if (!size || size > max_size) | |
705 | break; | |
706 | ||
707 | *_size = size; | |
708 | return 0; | |
709 | ||
710 | } while (0); | |
711 | ||
712 | pr_err("callchain: Incorrect stack dump size (max %ld): %s\n", | |
713 | max_size, str); | |
714 | return -1; | |
715 | } | |
95485b1c | 716 | #endif /* LIBUNWIND_SUPPORT */ |
26d33022 | 717 | |
75d9a108 ACM |
718 | int record_parse_callchain_opt(const struct option *opt, |
719 | const char *arg, int unset) | |
26d33022 | 720 | { |
c5ff78c3 | 721 | struct perf_record_opts *opts = opt->value; |
26d33022 JO |
722 | char *tok, *name, *saveptr = NULL; |
723 | char *buf; | |
724 | int ret = -1; | |
725 | ||
726 | /* --no-call-graph */ | |
727 | if (unset) | |
728 | return 0; | |
729 | ||
730 | /* We specified default option if none is provided. */ | |
731 | BUG_ON(!arg); | |
732 | ||
733 | /* We need buffer that we know we can write to. */ | |
734 | buf = malloc(strlen(arg) + 1); | |
735 | if (!buf) | |
736 | return -ENOMEM; | |
737 | ||
738 | strcpy(buf, arg); | |
739 | ||
740 | tok = strtok_r((char *)buf, ",", &saveptr); | |
741 | name = tok ? : (char *)buf; | |
742 | ||
743 | do { | |
744 | /* Framepointer style */ | |
745 | if (!strncmp(name, "fp", sizeof("fp"))) { | |
746 | if (!strtok_r(NULL, ",", &saveptr)) { | |
c5ff78c3 | 747 | opts->call_graph = CALLCHAIN_FP; |
26d33022 JO |
748 | ret = 0; |
749 | } else | |
750 | pr_err("callchain: No more arguments " | |
751 | "needed for -g fp\n"); | |
752 | break; | |
753 | ||
95485b1c | 754 | #ifdef LIBUNWIND_SUPPORT |
26d33022 JO |
755 | /* Dwarf style */ |
756 | } else if (!strncmp(name, "dwarf", sizeof("dwarf"))) { | |
61eaa3be ACM |
757 | const unsigned long default_stack_dump_size = 8192; |
758 | ||
26d33022 | 759 | ret = 0; |
c5ff78c3 ACM |
760 | opts->call_graph = CALLCHAIN_DWARF; |
761 | opts->stack_dump_size = default_stack_dump_size; | |
26d33022 JO |
762 | |
763 | tok = strtok_r(NULL, ",", &saveptr); | |
764 | if (tok) { | |
765 | unsigned long size = 0; | |
766 | ||
767 | ret = get_stack_size(tok, &size); | |
c5ff78c3 | 768 | opts->stack_dump_size = size; |
26d33022 JO |
769 | } |
770 | ||
771 | if (!ret) | |
772 | pr_debug("callchain: stack dump size %d\n", | |
c5ff78c3 | 773 | opts->stack_dump_size); |
95485b1c | 774 | #endif /* LIBUNWIND_SUPPORT */ |
26d33022 JO |
775 | } else { |
776 | pr_err("callchain: Unknown -g option " | |
777 | "value: %s\n", arg); | |
778 | break; | |
779 | } | |
780 | ||
781 | } while (0); | |
782 | ||
783 | free(buf); | |
784 | ||
785 | if (!ret) | |
c5ff78c3 | 786 | pr_debug("callchain: type %d\n", opts->call_graph); |
26d33022 JO |
787 | |
788 | return ret; | |
789 | } | |
790 | ||
0e9b20b8 | 791 | static const char * const record_usage[] = { |
9e096753 MG |
792 | "perf record [<options>] [<command>]", |
793 | "perf record [<options>] -- <command> [<options>]", | |
0e9b20b8 IM |
794 | NULL |
795 | }; | |
796 | ||
d20deb64 ACM |
797 | /* |
798 | * XXX Ideally would be local to cmd_record() and passed to a perf_record__new | |
799 | * because we need to have access to it in perf_record__exit, that is called | |
800 | * after cmd_record() exits, but since record_options need to be accessible to | |
801 | * builtin-script, leave it here. | |
802 | * | |
803 | * At least we don't ouch it in all the other functions here directly. | |
804 | * | |
805 | * Just say no to tons of global variables, sigh. | |
806 | */ | |
807 | static struct perf_record record = { | |
808 | .opts = { | |
d20deb64 ACM |
809 | .mmap_pages = UINT_MAX, |
810 | .user_freq = UINT_MAX, | |
811 | .user_interval = ULLONG_MAX, | |
447a6013 | 812 | .freq = 4000, |
d1cb9fce NK |
813 | .target = { |
814 | .uses_mmap = true, | |
815 | }, | |
d20deb64 | 816 | }, |
d20deb64 | 817 | }; |
7865e817 | 818 | |
61eaa3be ACM |
819 | #define CALLCHAIN_HELP "do call-graph (stack chain/backtrace) recording: " |
820 | ||
821 | #ifdef LIBUNWIND_SUPPORT | |
75d9a108 | 822 | const char record_callchain_help[] = CALLCHAIN_HELP "[fp] dwarf"; |
61eaa3be | 823 | #else |
75d9a108 | 824 | const char record_callchain_help[] = CALLCHAIN_HELP "[fp]"; |
61eaa3be ACM |
825 | #endif |
826 | ||
d20deb64 ACM |
827 | /* |
828 | * XXX Will stay a global variable till we fix builtin-script.c to stop messing | |
829 | * with it and switch to use the library functions in perf_evlist that came | |
830 | * from builtin-record.c, i.e. use perf_record_opts, | |
831 | * perf_evlist__prepare_workload, etc instead of fork+exec'in 'perf record', | |
832 | * using pipes, etc. | |
833 | */ | |
bca647aa | 834 | const struct option record_options[] = { |
d20deb64 | 835 | OPT_CALLBACK('e', "event", &record.evlist, "event", |
86847b62 | 836 | "event selector. use 'perf list' to list available events", |
f120f9d5 | 837 | parse_events_option), |
d20deb64 | 838 | OPT_CALLBACK(0, "filter", &record.evlist, "filter", |
c171b552 | 839 | "event filter", parse_filter), |
bea03405 | 840 | OPT_STRING('p', "pid", &record.opts.target.pid, "pid", |
d6d901c2 | 841 | "record events on existing process id"), |
bea03405 | 842 | OPT_STRING('t', "tid", &record.opts.target.tid, "tid", |
d6d901c2 | 843 | "record events on existing thread id"), |
d20deb64 | 844 | OPT_INTEGER('r', "realtime", &record.realtime_prio, |
0e9b20b8 | 845 | "collect data with this RT SCHED_FIFO priority"), |
d20deb64 | 846 | OPT_BOOLEAN('D', "no-delay", &record.opts.no_delay, |
acac03fa | 847 | "collect data without buffering"), |
d20deb64 | 848 | OPT_BOOLEAN('R', "raw-samples", &record.opts.raw_samples, |
daac07b2 | 849 | "collect raw sample records from all opened counters"), |
bea03405 | 850 | OPT_BOOLEAN('a', "all-cpus", &record.opts.target.system_wide, |
0e9b20b8 | 851 | "system-wide collection from all CPUs"), |
bea03405 | 852 | OPT_STRING('C', "cpu", &record.opts.target.cpu_list, "cpu", |
c45c6ea2 | 853 | "list of cpus to monitor"), |
d20deb64 ACM |
854 | OPT_U64('c', "count", &record.opts.user_interval, "event period to sample"), |
855 | OPT_STRING('o', "output", &record.output_name, "file", | |
abaff32a | 856 | "output file name"), |
d20deb64 | 857 | OPT_BOOLEAN('i', "no-inherit", &record.opts.no_inherit, |
2e6cdf99 | 858 | "child tasks do not inherit counters"), |
d20deb64 ACM |
859 | OPT_UINTEGER('F', "freq", &record.opts.user_freq, "profile at this frequency"), |
860 | OPT_UINTEGER('m', "mmap-pages", &record.opts.mmap_pages, | |
01c2d99b | 861 | "number of mmap data pages"), |
d20deb64 | 862 | OPT_BOOLEAN(0, "group", &record.opts.group, |
43bece79 | 863 | "put the counters into a counter group"), |
c5ff78c3 | 864 | OPT_CALLBACK_DEFAULT('g', "call-graph", &record.opts, |
75d9a108 ACM |
865 | "mode[,dump_size]", record_callchain_help, |
866 | &record_parse_callchain_opt, "fp"), | |
c0555642 | 867 | OPT_INCR('v', "verbose", &verbose, |
3da297a6 | 868 | "be more verbose (show counter open errors, etc)"), |
b44308f5 | 869 | OPT_BOOLEAN('q', "quiet", &quiet, "don't print any message"), |
d20deb64 | 870 | OPT_BOOLEAN('s', "stat", &record.opts.inherit_stat, |
649c48a9 | 871 | "per thread counts"), |
d20deb64 | 872 | OPT_BOOLEAN('d', "data", &record.opts.sample_address, |
4bba828d | 873 | "Sample addresses"), |
d20deb64 | 874 | OPT_BOOLEAN('T', "timestamp", &record.opts.sample_time, "Sample timestamps"), |
3e76ac78 | 875 | OPT_BOOLEAN('P', "period", &record.opts.period, "Sample period"), |
d20deb64 | 876 | OPT_BOOLEAN('n', "no-samples", &record.opts.no_samples, |
649c48a9 | 877 | "don't sample"), |
d20deb64 | 878 | OPT_BOOLEAN('N', "no-buildid-cache", &record.no_buildid_cache, |
a1ac1d3c | 879 | "do not update the buildid cache"), |
d20deb64 | 880 | OPT_BOOLEAN('B', "no-buildid", &record.no_buildid, |
baa2f6ce | 881 | "do not collect buildids in perf.data"), |
d20deb64 | 882 | OPT_CALLBACK('G', "cgroup", &record.evlist, "name", |
023695d9 SE |
883 | "monitor event in cgroup name only", |
884 | parse_cgroups), | |
bea03405 NK |
885 | OPT_STRING('u', "uid", &record.opts.target.uid_str, "user", |
886 | "user to profile"), | |
a5aabdac SE |
887 | |
888 | OPT_CALLBACK_NOOPT('b', "branch-any", &record.opts.branch_stack, | |
889 | "branch any", "sample any taken branches", | |
890 | parse_branch_stack), | |
891 | ||
892 | OPT_CALLBACK('j', "branch-filter", &record.opts.branch_stack, | |
893 | "branch filter mask", "branch stack filter modes", | |
bdfebd84 | 894 | parse_branch_stack), |
05484298 AK |
895 | OPT_BOOLEAN('W', "weight", &record.opts.sample_weight, |
896 | "sample by weight (on special events only)"), | |
0e9b20b8 IM |
897 | OPT_END() |
898 | }; | |
899 | ||
1d037ca1 | 900 | int cmd_record(int argc, const char **argv, const char *prefix __maybe_unused) |
0e9b20b8 | 901 | { |
69aad6f1 | 902 | int err = -ENOMEM; |
d20deb64 ACM |
903 | struct perf_evlist *evsel_list; |
904 | struct perf_record *rec = &record; | |
16ad2ffb | 905 | char errbuf[BUFSIZ]; |
0e9b20b8 | 906 | |
334fe7a3 | 907 | evsel_list = perf_evlist__new(); |
361c99a6 ACM |
908 | if (evsel_list == NULL) |
909 | return -ENOMEM; | |
910 | ||
d20deb64 ACM |
911 | rec->evlist = evsel_list; |
912 | ||
bca647aa | 913 | argc = parse_options(argc, argv, record_options, record_usage, |
655000e7 | 914 | PARSE_OPT_STOP_AT_NON_OPTION); |
d67356e7 | 915 | if (!argc && perf_target__none(&rec->opts.target)) |
bca647aa | 916 | usage_with_options(record_usage, record_options); |
0e9b20b8 | 917 | |
bea03405 | 918 | if (nr_cgroups && !rec->opts.target.system_wide) { |
3780f488 NK |
919 | ui__error("cgroup monitoring only available in" |
920 | " system-wide mode\n"); | |
023695d9 SE |
921 | usage_with_options(record_usage, record_options); |
922 | } | |
923 | ||
655000e7 | 924 | symbol__init(); |
baa2f6ce | 925 | |
ec80fde7 | 926 | if (symbol_conf.kptr_restrict) |
646aaea6 ACM |
927 | pr_warning( |
928 | "WARNING: Kernel address maps (/proc/{kallsyms,modules}) are restricted,\n" | |
929 | "check /proc/sys/kernel/kptr_restrict.\n\n" | |
930 | "Samples in kernel functions may not be resolved if a suitable vmlinux\n" | |
931 | "file is not found in the buildid cache or in the vmlinux path.\n\n" | |
932 | "Samples in kernel modules won't be resolved at all.\n\n" | |
933 | "If some relocation was applied (e.g. kexec) symbols may be misresolved\n" | |
934 | "even with a suitable vmlinux or kallsyms file.\n\n"); | |
ec80fde7 | 935 | |
d20deb64 | 936 | if (rec->no_buildid_cache || rec->no_buildid) |
a1ac1d3c | 937 | disable_buildid_cache(); |
655000e7 | 938 | |
361c99a6 ACM |
939 | if (evsel_list->nr_entries == 0 && |
940 | perf_evlist__add_default(evsel_list) < 0) { | |
69aad6f1 ACM |
941 | pr_err("Not enough memory for event selector list\n"); |
942 | goto out_symbol_exit; | |
bbd36e5e | 943 | } |
0e9b20b8 | 944 | |
16ad2ffb NK |
945 | err = perf_target__validate(&rec->opts.target); |
946 | if (err) { | |
947 | perf_target__strerror(&rec->opts.target, err, errbuf, BUFSIZ); | |
948 | ui__warning("%s", errbuf); | |
949 | } | |
950 | ||
951 | err = perf_target__parse_uid(&rec->opts.target); | |
952 | if (err) { | |
953 | int saved_errno = errno; | |
4bd0f2d2 | 954 | |
16ad2ffb | 955 | perf_target__strerror(&rec->opts.target, err, errbuf, BUFSIZ); |
3780f488 | 956 | ui__error("%s", errbuf); |
16ad2ffb NK |
957 | |
958 | err = -saved_errno; | |
8fa60e1f | 959 | goto out_symbol_exit; |
16ad2ffb | 960 | } |
0d37aa34 | 961 | |
16ad2ffb | 962 | err = -ENOMEM; |
b809ac10 | 963 | if (perf_evlist__create_maps(evsel_list, &rec->opts.target) < 0) |
dd7927f4 | 964 | usage_with_options(record_usage, record_options); |
69aad6f1 | 965 | |
d20deb64 ACM |
966 | if (rec->opts.user_interval != ULLONG_MAX) |
967 | rec->opts.default_interval = rec->opts.user_interval; | |
968 | if (rec->opts.user_freq != UINT_MAX) | |
969 | rec->opts.freq = rec->opts.user_freq; | |
f9212819 | 970 | |
7e4ff9e3 MG |
971 | /* |
972 | * User specified count overrides default frequency. | |
973 | */ | |
d20deb64 ACM |
974 | if (rec->opts.default_interval) |
975 | rec->opts.freq = 0; | |
976 | else if (rec->opts.freq) { | |
977 | rec->opts.default_interval = rec->opts.freq; | |
7e4ff9e3 | 978 | } else { |
3780f488 | 979 | ui__error("frequency and count are zero, aborting\n"); |
39d17dac | 980 | err = -EINVAL; |
5c581041 | 981 | goto out_free_fd; |
7e4ff9e3 MG |
982 | } |
983 | ||
d20deb64 | 984 | err = __cmd_record(&record, argc, argv); |
8fa60e1f NK |
985 | |
986 | perf_evlist__munmap(evsel_list); | |
987 | perf_evlist__close(evsel_list); | |
39d17dac | 988 | out_free_fd: |
7e2ed097 | 989 | perf_evlist__delete_maps(evsel_list); |
d65a458b ACM |
990 | out_symbol_exit: |
991 | symbol__exit(); | |
39d17dac | 992 | return err; |
0e9b20b8 | 993 | } |