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 | |
8f651eae | 17 | #include "util/callchain.h" |
f14d5707 | 18 | #include "util/cgroup.h" |
7c6a1c65 | 19 | #include "util/header.h" |
66e274f3 | 20 | #include "util/event.h" |
361c99a6 | 21 | #include "util/evlist.h" |
69aad6f1 | 22 | #include "util/evsel.h" |
8f28827a | 23 | #include "util/debug.h" |
94c744b6 | 24 | #include "util/session.h" |
45694aa7 | 25 | #include "util/tool.h" |
8d06367f | 26 | #include "util/symbol.h" |
a12b51c4 | 27 | #include "util/cpumap.h" |
fd78260b | 28 | #include "util/thread_map.h" |
f5fc1412 | 29 | #include "util/data.h" |
ef149c25 | 30 | #include "util/auxtrace.h" |
f00898f4 | 31 | #include "util/parse-branch-options.h" |
7c6a1c65 | 32 | |
97124d5e | 33 | #include <unistd.h> |
de9ac07b | 34 | #include <sched.h> |
a41794cd | 35 | #include <sys/mman.h> |
de9ac07b | 36 | |
78da39fa | 37 | |
8c6f45a7 | 38 | struct record { |
45694aa7 | 39 | struct perf_tool tool; |
b4006796 | 40 | struct record_opts opts; |
d20deb64 | 41 | u64 bytes_written; |
f5fc1412 | 42 | struct perf_data_file file; |
ef149c25 | 43 | struct auxtrace_record *itr; |
d20deb64 ACM |
44 | struct perf_evlist *evlist; |
45 | struct perf_session *session; | |
46 | const char *progname; | |
d20deb64 | 47 | int realtime_prio; |
d20deb64 ACM |
48 | bool no_buildid; |
49 | bool no_buildid_cache; | |
d20deb64 | 50 | long samples; |
0f82ebc4 | 51 | }; |
a21ca2ca | 52 | |
8c6f45a7 | 53 | static int record__write(struct record *rec, void *bf, size_t size) |
f5970550 | 54 | { |
cf8b2e69 | 55 | if (perf_data_file__write(rec->session->file, bf, size) < 0) { |
50a9b868 JO |
56 | pr_err("failed to write perf data, error: %m\n"); |
57 | return -1; | |
f5970550 | 58 | } |
8d3eca20 | 59 | |
cf8b2e69 | 60 | rec->bytes_written += size; |
8d3eca20 | 61 | return 0; |
f5970550 PZ |
62 | } |
63 | ||
45694aa7 | 64 | static int process_synthesized_event(struct perf_tool *tool, |
d20deb64 | 65 | union perf_event *event, |
1d037ca1 IT |
66 | struct perf_sample *sample __maybe_unused, |
67 | struct machine *machine __maybe_unused) | |
234fbbf5 | 68 | { |
8c6f45a7 ACM |
69 | struct record *rec = container_of(tool, struct record, tool); |
70 | return record__write(rec, event, event->header.size); | |
234fbbf5 ACM |
71 | } |
72 | ||
e5685730 | 73 | static int record__mmap_read(struct record *rec, int idx) |
de9ac07b | 74 | { |
e5685730 | 75 | struct perf_mmap *md = &rec->evlist->mmap[idx]; |
7b8283b5 DA |
76 | u64 head = perf_mmap__read_head(md); |
77 | u64 old = md->prev; | |
918512b4 | 78 | unsigned char *data = md->base + page_size; |
de9ac07b PZ |
79 | unsigned long size; |
80 | void *buf; | |
8d3eca20 | 81 | int rc = 0; |
de9ac07b | 82 | |
dc82009a | 83 | if (old == head) |
8d3eca20 | 84 | return 0; |
dc82009a | 85 | |
d20deb64 | 86 | rec->samples++; |
de9ac07b PZ |
87 | |
88 | size = head - old; | |
89 | ||
90 | if ((old & md->mask) + size != (head & md->mask)) { | |
91 | buf = &data[old & md->mask]; | |
92 | size = md->mask + 1 - (old & md->mask); | |
93 | old += size; | |
021e9f47 | 94 | |
8c6f45a7 | 95 | if (record__write(rec, buf, size) < 0) { |
8d3eca20 DA |
96 | rc = -1; |
97 | goto out; | |
98 | } | |
de9ac07b PZ |
99 | } |
100 | ||
101 | buf = &data[old & md->mask]; | |
102 | size = head - old; | |
103 | old += size; | |
021e9f47 | 104 | |
8c6f45a7 | 105 | if (record__write(rec, buf, size) < 0) { |
8d3eca20 DA |
106 | rc = -1; |
107 | goto out; | |
108 | } | |
de9ac07b PZ |
109 | |
110 | md->prev = old; | |
e5685730 | 111 | perf_evlist__mmap_consume(rec->evlist, idx); |
8d3eca20 DA |
112 | out: |
113 | return rc; | |
de9ac07b PZ |
114 | } |
115 | ||
2dd6d8a1 AH |
116 | static volatile int done; |
117 | static volatile int signr = -1; | |
118 | static volatile int child_finished; | |
119 | static volatile int auxtrace_snapshot_enabled; | |
120 | static volatile int auxtrace_snapshot_err; | |
121 | static volatile int auxtrace_record__snapshot_started; | |
122 | ||
123 | static void sig_handler(int sig) | |
124 | { | |
125 | if (sig == SIGCHLD) | |
126 | child_finished = 1; | |
127 | else | |
128 | signr = sig; | |
129 | ||
130 | done = 1; | |
131 | } | |
132 | ||
133 | static void record__sig_exit(void) | |
134 | { | |
135 | if (signr == -1) | |
136 | return; | |
137 | ||
138 | signal(signr, SIG_DFL); | |
139 | raise(signr); | |
140 | } | |
141 | ||
e31f0d01 AH |
142 | #ifdef HAVE_AUXTRACE_SUPPORT |
143 | ||
ef149c25 AH |
144 | static int record__process_auxtrace(struct perf_tool *tool, |
145 | union perf_event *event, void *data1, | |
146 | size_t len1, void *data2, size_t len2) | |
147 | { | |
148 | struct record *rec = container_of(tool, struct record, tool); | |
99fa2984 | 149 | struct perf_data_file *file = &rec->file; |
ef149c25 AH |
150 | size_t padding; |
151 | u8 pad[8] = {0}; | |
152 | ||
99fa2984 AH |
153 | if (!perf_data_file__is_pipe(file)) { |
154 | off_t file_offset; | |
155 | int fd = perf_data_file__fd(file); | |
156 | int err; | |
157 | ||
158 | file_offset = lseek(fd, 0, SEEK_CUR); | |
159 | if (file_offset == -1) | |
160 | return -1; | |
161 | err = auxtrace_index__auxtrace_event(&rec->session->auxtrace_index, | |
162 | event, file_offset); | |
163 | if (err) | |
164 | return err; | |
165 | } | |
166 | ||
ef149c25 AH |
167 | /* event.auxtrace.size includes padding, see __auxtrace_mmap__read() */ |
168 | padding = (len1 + len2) & 7; | |
169 | if (padding) | |
170 | padding = 8 - padding; | |
171 | ||
172 | record__write(rec, event, event->header.size); | |
173 | record__write(rec, data1, len1); | |
174 | if (len2) | |
175 | record__write(rec, data2, len2); | |
176 | record__write(rec, &pad, padding); | |
177 | ||
178 | return 0; | |
179 | } | |
180 | ||
181 | static int record__auxtrace_mmap_read(struct record *rec, | |
182 | struct auxtrace_mmap *mm) | |
183 | { | |
184 | int ret; | |
185 | ||
186 | ret = auxtrace_mmap__read(mm, rec->itr, &rec->tool, | |
187 | record__process_auxtrace); | |
188 | if (ret < 0) | |
189 | return ret; | |
190 | ||
191 | if (ret) | |
192 | rec->samples++; | |
193 | ||
194 | return 0; | |
195 | } | |
196 | ||
2dd6d8a1 AH |
197 | static int record__auxtrace_mmap_read_snapshot(struct record *rec, |
198 | struct auxtrace_mmap *mm) | |
199 | { | |
200 | int ret; | |
201 | ||
202 | ret = auxtrace_mmap__read_snapshot(mm, rec->itr, &rec->tool, | |
203 | record__process_auxtrace, | |
204 | rec->opts.auxtrace_snapshot_size); | |
205 | if (ret < 0) | |
206 | return ret; | |
207 | ||
208 | if (ret) | |
209 | rec->samples++; | |
210 | ||
211 | return 0; | |
212 | } | |
213 | ||
214 | static int record__auxtrace_read_snapshot_all(struct record *rec) | |
215 | { | |
216 | int i; | |
217 | int rc = 0; | |
218 | ||
219 | for (i = 0; i < rec->evlist->nr_mmaps; i++) { | |
220 | struct auxtrace_mmap *mm = | |
221 | &rec->evlist->mmap[i].auxtrace_mmap; | |
222 | ||
223 | if (!mm->base) | |
224 | continue; | |
225 | ||
226 | if (record__auxtrace_mmap_read_snapshot(rec, mm) != 0) { | |
227 | rc = -1; | |
228 | goto out; | |
229 | } | |
230 | } | |
231 | out: | |
232 | return rc; | |
233 | } | |
234 | ||
235 | static void record__read_auxtrace_snapshot(struct record *rec) | |
236 | { | |
237 | pr_debug("Recording AUX area tracing snapshot\n"); | |
238 | if (record__auxtrace_read_snapshot_all(rec) < 0) { | |
239 | auxtrace_snapshot_err = -1; | |
240 | } else { | |
241 | auxtrace_snapshot_err = auxtrace_record__snapshot_finish(rec->itr); | |
242 | if (!auxtrace_snapshot_err) | |
243 | auxtrace_snapshot_enabled = 1; | |
244 | } | |
245 | } | |
246 | ||
e31f0d01 AH |
247 | #else |
248 | ||
249 | static inline | |
250 | int record__auxtrace_mmap_read(struct record *rec __maybe_unused, | |
251 | struct auxtrace_mmap *mm __maybe_unused) | |
252 | { | |
253 | return 0; | |
254 | } | |
255 | ||
2dd6d8a1 AH |
256 | static inline |
257 | void record__read_auxtrace_snapshot(struct record *rec __maybe_unused) | |
de9ac07b | 258 | { |
f7b7c26e PZ |
259 | } |
260 | ||
2dd6d8a1 AH |
261 | static inline |
262 | int auxtrace_record__snapshot_start(struct auxtrace_record *itr __maybe_unused) | |
f7b7c26e | 263 | { |
2dd6d8a1 | 264 | return 0; |
de9ac07b PZ |
265 | } |
266 | ||
2dd6d8a1 AH |
267 | #endif |
268 | ||
8c6f45a7 | 269 | static int record__open(struct record *rec) |
dd7927f4 | 270 | { |
56e52e85 | 271 | char msg[512]; |
6a4bb04c | 272 | struct perf_evsel *pos; |
d20deb64 ACM |
273 | struct perf_evlist *evlist = rec->evlist; |
274 | struct perf_session *session = rec->session; | |
b4006796 | 275 | struct record_opts *opts = &rec->opts; |
8d3eca20 | 276 | int rc = 0; |
dd7927f4 | 277 | |
f77a9518 | 278 | perf_evlist__config(evlist, opts); |
cac21425 | 279 | |
0050f7aa | 280 | evlist__for_each(evlist, pos) { |
dd7927f4 | 281 | try_again: |
6a4bb04c | 282 | if (perf_evsel__open(pos, evlist->cpus, evlist->threads) < 0) { |
56e52e85 | 283 | if (perf_evsel__fallback(pos, errno, msg, sizeof(msg))) { |
d6d901c2 | 284 | if (verbose) |
c0a54341 | 285 | ui__warning("%s\n", msg); |
d6d901c2 ZY |
286 | goto try_again; |
287 | } | |
ca6a4258 | 288 | |
56e52e85 ACM |
289 | rc = -errno; |
290 | perf_evsel__open_strerror(pos, &opts->target, | |
291 | errno, msg, sizeof(msg)); | |
292 | ui__error("%s\n", msg); | |
8d3eca20 | 293 | goto out; |
c171b552 LZ |
294 | } |
295 | } | |
a43d3f08 | 296 | |
23d4aad4 ACM |
297 | if (perf_evlist__apply_filters(evlist, &pos)) { |
298 | error("failed to set filter \"%s\" on event %s with %d (%s)\n", | |
299 | pos->filter, perf_evsel__name(pos), errno, | |
35550da3 | 300 | strerror_r(errno, msg, sizeof(msg))); |
8d3eca20 DA |
301 | rc = -1; |
302 | goto out; | |
0a102479 FW |
303 | } |
304 | ||
ef149c25 | 305 | if (perf_evlist__mmap_ex(evlist, opts->mmap_pages, false, |
2dd6d8a1 AH |
306 | opts->auxtrace_mmap_pages, |
307 | opts->auxtrace_snapshot_mode) < 0) { | |
8d3eca20 DA |
308 | if (errno == EPERM) { |
309 | pr_err("Permission error mapping pages.\n" | |
310 | "Consider increasing " | |
311 | "/proc/sys/kernel/perf_event_mlock_kb,\n" | |
312 | "or try again with a smaller value of -m/--mmap_pages.\n" | |
ef149c25 AH |
313 | "(current value: %u,%u)\n", |
314 | opts->mmap_pages, opts->auxtrace_mmap_pages); | |
8d3eca20 | 315 | rc = -errno; |
8d3eca20 | 316 | } else { |
35550da3 MH |
317 | pr_err("failed to mmap with %d (%s)\n", errno, |
318 | strerror_r(errno, msg, sizeof(msg))); | |
8d3eca20 DA |
319 | rc = -errno; |
320 | } | |
321 | goto out; | |
18e60939 | 322 | } |
0a27d7f9 | 323 | |
563aecb2 | 324 | session->evlist = evlist; |
7b56cce2 | 325 | perf_session__set_id_hdr_size(session); |
8d3eca20 DA |
326 | out: |
327 | return rc; | |
16c8a109 PZ |
328 | } |
329 | ||
e3d59112 NK |
330 | static int process_sample_event(struct perf_tool *tool, |
331 | union perf_event *event, | |
332 | struct perf_sample *sample, | |
333 | struct perf_evsel *evsel, | |
334 | struct machine *machine) | |
335 | { | |
336 | struct record *rec = container_of(tool, struct record, tool); | |
337 | ||
338 | rec->samples++; | |
339 | ||
340 | return build_id__mark_dso_hit(tool, event, sample, evsel, machine); | |
341 | } | |
342 | ||
8c6f45a7 | 343 | static int process_buildids(struct record *rec) |
6122e4e4 | 344 | { |
f5fc1412 JO |
345 | struct perf_data_file *file = &rec->file; |
346 | struct perf_session *session = rec->session; | |
6122e4e4 | 347 | |
457ae94a | 348 | if (file->size == 0) |
9f591fd7 ACM |
349 | return 0; |
350 | ||
00dc8657 NK |
351 | /* |
352 | * During this process, it'll load kernel map and replace the | |
353 | * dso->long_name to a real pathname it found. In this case | |
354 | * we prefer the vmlinux path like | |
355 | * /lib/modules/3.16.4/build/vmlinux | |
356 | * | |
357 | * rather than build-id path (in debug directory). | |
358 | * $HOME/.debug/.build-id/f0/6e17aa50adf4d00b88925e03775de107611551 | |
359 | */ | |
360 | symbol_conf.ignore_vmlinux_buildid = true; | |
361 | ||
b7b61cbe | 362 | return perf_session__process_events(session); |
6122e4e4 ACM |
363 | } |
364 | ||
8115d60c | 365 | static void perf_event__synthesize_guest_os(struct machine *machine, void *data) |
a1645ce1 ZY |
366 | { |
367 | int err; | |
45694aa7 | 368 | struct perf_tool *tool = data; |
a1645ce1 ZY |
369 | /* |
370 | *As for guest kernel when processing subcommand record&report, | |
371 | *we arrange module mmap prior to guest kernel mmap and trigger | |
372 | *a preload dso because default guest module symbols are loaded | |
373 | *from guest kallsyms instead of /lib/modules/XXX/XXX. This | |
374 | *method is used to avoid symbol missing when the first addr is | |
375 | *in module instead of in guest kernel. | |
376 | */ | |
45694aa7 | 377 | err = perf_event__synthesize_modules(tool, process_synthesized_event, |
743eb868 | 378 | machine); |
a1645ce1 ZY |
379 | if (err < 0) |
380 | pr_err("Couldn't record guest kernel [%d]'s reference" | |
23346f21 | 381 | " relocation symbol.\n", machine->pid); |
a1645ce1 | 382 | |
a1645ce1 ZY |
383 | /* |
384 | * We use _stext for guest kernel because guest kernel's /proc/kallsyms | |
385 | * have no _text sometimes. | |
386 | */ | |
45694aa7 | 387 | err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event, |
0ae617be | 388 | machine); |
a1645ce1 ZY |
389 | if (err < 0) |
390 | pr_err("Couldn't record guest kernel [%d]'s reference" | |
23346f21 | 391 | " relocation symbol.\n", machine->pid); |
a1645ce1 ZY |
392 | } |
393 | ||
98402807 FW |
394 | static struct perf_event_header finished_round_event = { |
395 | .size = sizeof(struct perf_event_header), | |
396 | .type = PERF_RECORD_FINISHED_ROUND, | |
397 | }; | |
398 | ||
8c6f45a7 | 399 | static int record__mmap_read_all(struct record *rec) |
98402807 | 400 | { |
dcabb507 | 401 | u64 bytes_written = rec->bytes_written; |
0e2e63dd | 402 | int i; |
8d3eca20 | 403 | int rc = 0; |
98402807 | 404 | |
d20deb64 | 405 | for (i = 0; i < rec->evlist->nr_mmaps; i++) { |
ef149c25 AH |
406 | struct auxtrace_mmap *mm = &rec->evlist->mmap[i].auxtrace_mmap; |
407 | ||
8d3eca20 | 408 | if (rec->evlist->mmap[i].base) { |
e5685730 | 409 | if (record__mmap_read(rec, i) != 0) { |
8d3eca20 DA |
410 | rc = -1; |
411 | goto out; | |
412 | } | |
413 | } | |
ef149c25 | 414 | |
2dd6d8a1 | 415 | if (mm->base && !rec->opts.auxtrace_snapshot_mode && |
ef149c25 AH |
416 | record__auxtrace_mmap_read(rec, mm) != 0) { |
417 | rc = -1; | |
418 | goto out; | |
419 | } | |
98402807 FW |
420 | } |
421 | ||
dcabb507 JO |
422 | /* |
423 | * Mark the round finished in case we wrote | |
424 | * at least one event. | |
425 | */ | |
426 | if (bytes_written != rec->bytes_written) | |
427 | rc = record__write(rec, &finished_round_event, sizeof(finished_round_event)); | |
8d3eca20 DA |
428 | |
429 | out: | |
430 | return rc; | |
98402807 FW |
431 | } |
432 | ||
8c6f45a7 | 433 | static void record__init_features(struct record *rec) |
57706abc | 434 | { |
57706abc DA |
435 | struct perf_session *session = rec->session; |
436 | int feat; | |
437 | ||
438 | for (feat = HEADER_FIRST_FEATURE; feat < HEADER_LAST_FEATURE; feat++) | |
439 | perf_header__set_feat(&session->header, feat); | |
440 | ||
441 | if (rec->no_buildid) | |
442 | perf_header__clear_feat(&session->header, HEADER_BUILD_ID); | |
443 | ||
3e2be2da | 444 | if (!have_tracepoints(&rec->evlist->entries)) |
57706abc DA |
445 | perf_header__clear_feat(&session->header, HEADER_TRACING_DATA); |
446 | ||
447 | if (!rec->opts.branch_stack) | |
448 | perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK); | |
ef149c25 AH |
449 | |
450 | if (!rec->opts.full_auxtrace) | |
451 | perf_header__clear_feat(&session->header, HEADER_AUXTRACE); | |
57706abc DA |
452 | } |
453 | ||
f33cbe72 ACM |
454 | static volatile int workload_exec_errno; |
455 | ||
456 | /* | |
457 | * perf_evlist__prepare_workload will send a SIGUSR1 | |
458 | * if the fork fails, since we asked by setting its | |
459 | * want_signal to true. | |
460 | */ | |
45604710 NK |
461 | static void workload_exec_failed_signal(int signo __maybe_unused, |
462 | siginfo_t *info, | |
f33cbe72 ACM |
463 | void *ucontext __maybe_unused) |
464 | { | |
465 | workload_exec_errno = info->si_value.sival_int; | |
466 | done = 1; | |
f33cbe72 ACM |
467 | child_finished = 1; |
468 | } | |
469 | ||
2dd6d8a1 AH |
470 | static void snapshot_sig_handler(int sig); |
471 | ||
8c6f45a7 | 472 | static int __cmd_record(struct record *rec, int argc, const char **argv) |
16c8a109 | 473 | { |
57706abc | 474 | int err; |
45604710 | 475 | int status = 0; |
8b412664 | 476 | unsigned long waking = 0; |
46be604b | 477 | const bool forks = argc > 0; |
23346f21 | 478 | struct machine *machine; |
45694aa7 | 479 | struct perf_tool *tool = &rec->tool; |
b4006796 | 480 | struct record_opts *opts = &rec->opts; |
f5fc1412 | 481 | struct perf_data_file *file = &rec->file; |
d20deb64 | 482 | struct perf_session *session; |
6dcf45ef | 483 | bool disabled = false, draining = false; |
42aa276f | 484 | int fd; |
de9ac07b | 485 | |
d20deb64 | 486 | rec->progname = argv[0]; |
33e49ea7 | 487 | |
45604710 | 488 | atexit(record__sig_exit); |
f5970550 PZ |
489 | signal(SIGCHLD, sig_handler); |
490 | signal(SIGINT, sig_handler); | |
804f7ac7 | 491 | signal(SIGTERM, sig_handler); |
2dd6d8a1 AH |
492 | if (rec->opts.auxtrace_snapshot_mode) |
493 | signal(SIGUSR2, snapshot_sig_handler); | |
494 | else | |
495 | signal(SIGUSR2, SIG_IGN); | |
f5970550 | 496 | |
b7b61cbe | 497 | session = perf_session__new(file, false, tool); |
94c744b6 | 498 | if (session == NULL) { |
ffa91880 | 499 | pr_err("Perf session creation failed.\n"); |
a9a70bbc ACM |
500 | return -1; |
501 | } | |
502 | ||
42aa276f | 503 | fd = perf_data_file__fd(file); |
d20deb64 ACM |
504 | rec->session = session; |
505 | ||
8c6f45a7 | 506 | record__init_features(rec); |
330aa675 | 507 | |
d4db3f16 | 508 | if (forks) { |
3e2be2da | 509 | err = perf_evlist__prepare_workload(rec->evlist, &opts->target, |
f5fc1412 | 510 | argv, file->is_pipe, |
735f7e0b | 511 | workload_exec_failed_signal); |
35b9d88e ACM |
512 | if (err < 0) { |
513 | pr_err("Couldn't run the workload!\n"); | |
45604710 | 514 | status = err; |
35b9d88e | 515 | goto out_delete_session; |
856e9660 | 516 | } |
856e9660 PZ |
517 | } |
518 | ||
8c6f45a7 | 519 | if (record__open(rec) != 0) { |
8d3eca20 | 520 | err = -1; |
45604710 | 521 | goto out_child; |
8d3eca20 | 522 | } |
de9ac07b | 523 | |
3e2be2da | 524 | if (!rec->evlist->nr_groups) |
a8bb559b NK |
525 | perf_header__clear_feat(&session->header, HEADER_GROUP_DESC); |
526 | ||
f5fc1412 | 527 | if (file->is_pipe) { |
42aa276f | 528 | err = perf_header__write_pipe(fd); |
529870e3 | 529 | if (err < 0) |
45604710 | 530 | goto out_child; |
563aecb2 | 531 | } else { |
42aa276f | 532 | err = perf_session__write_header(session, rec->evlist, fd, false); |
d5eed904 | 533 | if (err < 0) |
45604710 | 534 | goto out_child; |
56b03f3c ACM |
535 | } |
536 | ||
d3665498 | 537 | if (!rec->no_buildid |
e20960c0 | 538 | && !perf_header__has_feat(&session->header, HEADER_BUILD_ID)) { |
d3665498 | 539 | pr_err("Couldn't generate buildids. " |
e20960c0 | 540 | "Use --no-buildid to profile anyway.\n"); |
8d3eca20 | 541 | err = -1; |
45604710 | 542 | goto out_child; |
e20960c0 RR |
543 | } |
544 | ||
34ba5122 | 545 | machine = &session->machines.host; |
743eb868 | 546 | |
f5fc1412 | 547 | if (file->is_pipe) { |
45694aa7 | 548 | err = perf_event__synthesize_attrs(tool, session, |
d20deb64 | 549 | process_synthesized_event); |
2c46dbb5 TZ |
550 | if (err < 0) { |
551 | pr_err("Couldn't synthesize attrs.\n"); | |
45604710 | 552 | goto out_child; |
2c46dbb5 | 553 | } |
cd19a035 | 554 | |
3e2be2da | 555 | if (have_tracepoints(&rec->evlist->entries)) { |
63e0c771 TZ |
556 | /* |
557 | * FIXME err <= 0 here actually means that | |
558 | * there were no tracepoints so its not really | |
559 | * an error, just that we don't need to | |
560 | * synthesize anything. We really have to | |
561 | * return this more properly and also | |
562 | * propagate errors that now are calling die() | |
563 | */ | |
42aa276f | 564 | err = perf_event__synthesize_tracing_data(tool, fd, rec->evlist, |
743eb868 | 565 | process_synthesized_event); |
63e0c771 TZ |
566 | if (err <= 0) { |
567 | pr_err("Couldn't record tracing data.\n"); | |
45604710 | 568 | goto out_child; |
63e0c771 | 569 | } |
f34b9001 | 570 | rec->bytes_written += err; |
63e0c771 | 571 | } |
2c46dbb5 TZ |
572 | } |
573 | ||
ef149c25 AH |
574 | if (rec->opts.full_auxtrace) { |
575 | err = perf_event__synthesize_auxtrace_info(rec->itr, tool, | |
576 | session, process_synthesized_event); | |
577 | if (err) | |
578 | goto out_delete_session; | |
579 | } | |
580 | ||
45694aa7 | 581 | err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event, |
0ae617be | 582 | machine); |
c1a3a4b9 ACM |
583 | if (err < 0) |
584 | pr_err("Couldn't record kernel reference relocation symbol\n" | |
585 | "Symbol resolution may be skewed if relocation was used (e.g. kexec).\n" | |
586 | "Check /proc/kallsyms permission or run as root.\n"); | |
b7cece76 | 587 | |
45694aa7 | 588 | err = perf_event__synthesize_modules(tool, process_synthesized_event, |
743eb868 | 589 | machine); |
c1a3a4b9 ACM |
590 | if (err < 0) |
591 | pr_err("Couldn't record kernel module information.\n" | |
592 | "Symbol resolution may be skewed if relocation was used (e.g. kexec).\n" | |
593 | "Check /proc/modules permission or run as root.\n"); | |
594 | ||
7e383de4 | 595 | if (perf_guest) { |
876650e6 ACM |
596 | machines__process_guests(&session->machines, |
597 | perf_event__synthesize_guest_os, tool); | |
7e383de4 | 598 | } |
7c6a1c65 | 599 | |
3e2be2da | 600 | err = __machine__synthesize_threads(machine, tool, &opts->target, rec->evlist->threads, |
9d9cad76 KL |
601 | process_synthesized_event, opts->sample_address, |
602 | opts->proc_map_timeout); | |
8d3eca20 | 603 | if (err != 0) |
45604710 | 604 | goto out_child; |
8d3eca20 | 605 | |
d20deb64 | 606 | if (rec->realtime_prio) { |
de9ac07b PZ |
607 | struct sched_param param; |
608 | ||
d20deb64 | 609 | param.sched_priority = rec->realtime_prio; |
de9ac07b | 610 | if (sched_setscheduler(0, SCHED_FIFO, ¶m)) { |
6beba7ad | 611 | pr_err("Could not set realtime priority.\n"); |
8d3eca20 | 612 | err = -1; |
45604710 | 613 | goto out_child; |
de9ac07b PZ |
614 | } |
615 | } | |
616 | ||
774cb499 JO |
617 | /* |
618 | * When perf is starting the traced process, all the events | |
619 | * (apart from group members) have enable_on_exec=1 set, | |
620 | * so don't spoil it by prematurely enabling them. | |
621 | */ | |
6619a53e | 622 | if (!target__none(&opts->target) && !opts->initial_delay) |
3e2be2da | 623 | perf_evlist__enable(rec->evlist); |
764e16a3 | 624 | |
856e9660 PZ |
625 | /* |
626 | * Let the child rip | |
627 | */ | |
735f7e0b | 628 | if (forks) |
3e2be2da | 629 | perf_evlist__start_workload(rec->evlist); |
856e9660 | 630 | |
6619a53e AK |
631 | if (opts->initial_delay) { |
632 | usleep(opts->initial_delay * 1000); | |
633 | perf_evlist__enable(rec->evlist); | |
634 | } | |
635 | ||
2dd6d8a1 | 636 | auxtrace_snapshot_enabled = 1; |
649c48a9 | 637 | for (;;) { |
d20deb64 | 638 | int hits = rec->samples; |
de9ac07b | 639 | |
8c6f45a7 | 640 | if (record__mmap_read_all(rec) < 0) { |
2dd6d8a1 | 641 | auxtrace_snapshot_enabled = 0; |
8d3eca20 | 642 | err = -1; |
45604710 | 643 | goto out_child; |
8d3eca20 | 644 | } |
de9ac07b | 645 | |
2dd6d8a1 AH |
646 | if (auxtrace_record__snapshot_started) { |
647 | auxtrace_record__snapshot_started = 0; | |
648 | if (!auxtrace_snapshot_err) | |
649 | record__read_auxtrace_snapshot(rec); | |
650 | if (auxtrace_snapshot_err) { | |
651 | pr_err("AUX area tracing snapshot failed\n"); | |
652 | err = -1; | |
653 | goto out_child; | |
654 | } | |
655 | } | |
656 | ||
d20deb64 | 657 | if (hits == rec->samples) { |
6dcf45ef | 658 | if (done || draining) |
649c48a9 | 659 | break; |
f66a889d | 660 | err = perf_evlist__poll(rec->evlist, -1); |
a515114f JO |
661 | /* |
662 | * Propagate error, only if there's any. Ignore positive | |
663 | * number of returned events and interrupt error. | |
664 | */ | |
665 | if (err > 0 || (err < 0 && errno == EINTR)) | |
45604710 | 666 | err = 0; |
8b412664 | 667 | waking++; |
6dcf45ef ACM |
668 | |
669 | if (perf_evlist__filter_pollfd(rec->evlist, POLLERR | POLLHUP) == 0) | |
670 | draining = true; | |
8b412664 PZ |
671 | } |
672 | ||
774cb499 JO |
673 | /* |
674 | * When perf is starting the traced process, at the end events | |
675 | * die with the process and we wait for that. Thus no need to | |
676 | * disable events in this case. | |
677 | */ | |
602ad878 | 678 | if (done && !disabled && !target__none(&opts->target)) { |
2dd6d8a1 | 679 | auxtrace_snapshot_enabled = 0; |
3e2be2da | 680 | perf_evlist__disable(rec->evlist); |
2711926a JO |
681 | disabled = true; |
682 | } | |
de9ac07b | 683 | } |
2dd6d8a1 | 684 | auxtrace_snapshot_enabled = 0; |
de9ac07b | 685 | |
f33cbe72 | 686 | if (forks && workload_exec_errno) { |
35550da3 | 687 | char msg[STRERR_BUFSIZE]; |
f33cbe72 ACM |
688 | const char *emsg = strerror_r(workload_exec_errno, msg, sizeof(msg)); |
689 | pr_err("Workload failed: %s\n", emsg); | |
690 | err = -1; | |
45604710 | 691 | goto out_child; |
f33cbe72 ACM |
692 | } |
693 | ||
e3d59112 | 694 | if (!quiet) |
45604710 | 695 | fprintf(stderr, "[ perf record: Woken up %ld times to write data ]\n", waking); |
b44308f5 | 696 | |
45604710 NK |
697 | out_child: |
698 | if (forks) { | |
699 | int exit_status; | |
addc2785 | 700 | |
45604710 NK |
701 | if (!child_finished) |
702 | kill(rec->evlist->workload.pid, SIGTERM); | |
703 | ||
704 | wait(&exit_status); | |
705 | ||
706 | if (err < 0) | |
707 | status = err; | |
708 | else if (WIFEXITED(exit_status)) | |
709 | status = WEXITSTATUS(exit_status); | |
710 | else if (WIFSIGNALED(exit_status)) | |
711 | signr = WTERMSIG(exit_status); | |
712 | } else | |
713 | status = err; | |
714 | ||
e3d59112 NK |
715 | /* this will be recalculated during process_buildids() */ |
716 | rec->samples = 0; | |
717 | ||
45604710 NK |
718 | if (!err && !file->is_pipe) { |
719 | rec->session->header.data_size += rec->bytes_written; | |
457ae94a | 720 | file->size = lseek(perf_data_file__fd(file), 0, SEEK_CUR); |
45604710 | 721 | |
cd10b289 | 722 | if (!rec->no_buildid) { |
45604710 | 723 | process_buildids(rec); |
cd10b289 AH |
724 | /* |
725 | * We take all buildids when the file contains | |
726 | * AUX area tracing data because we do not decode the | |
727 | * trace because it would take too long. | |
728 | */ | |
729 | if (rec->opts.full_auxtrace) | |
730 | dsos__hit_all(rec->session); | |
731 | } | |
42aa276f | 732 | perf_session__write_header(rec->session, rec->evlist, fd, true); |
45604710 | 733 | } |
39d17dac | 734 | |
e3d59112 NK |
735 | if (!err && !quiet) { |
736 | char samples[128]; | |
737 | ||
ef149c25 | 738 | if (rec->samples && !rec->opts.full_auxtrace) |
e3d59112 NK |
739 | scnprintf(samples, sizeof(samples), |
740 | " (%" PRIu64 " samples)", rec->samples); | |
741 | else | |
742 | samples[0] = '\0'; | |
743 | ||
744 | fprintf(stderr, "[ perf record: Captured and wrote %.3f MB %s%s ]\n", | |
745 | perf_data_file__size(file) / 1024.0 / 1024.0, | |
746 | file->path, samples); | |
747 | } | |
748 | ||
39d17dac ACM |
749 | out_delete_session: |
750 | perf_session__delete(session); | |
45604710 | 751 | return status; |
de9ac07b | 752 | } |
0e9b20b8 | 753 | |
72a128aa | 754 | static void callchain_debug(void) |
09b0fd45 | 755 | { |
aad2b21c | 756 | static const char *str[CALLCHAIN_MAX] = { "NONE", "FP", "DWARF", "LBR" }; |
a601fdff | 757 | |
72a128aa | 758 | pr_debug("callchain: type %s\n", str[callchain_param.record_mode]); |
26d33022 | 759 | |
72a128aa | 760 | if (callchain_param.record_mode == CALLCHAIN_DWARF) |
09b0fd45 | 761 | pr_debug("callchain: stack dump size %d\n", |
72a128aa | 762 | callchain_param.dump_size); |
09b0fd45 JO |
763 | } |
764 | ||
72a128aa | 765 | int record_parse_callchain_opt(const struct option *opt __maybe_unused, |
09b0fd45 JO |
766 | const char *arg, |
767 | int unset) | |
768 | { | |
09b0fd45 JO |
769 | int ret; |
770 | ||
72a128aa | 771 | callchain_param.enabled = !unset; |
eb853e80 | 772 | |
09b0fd45 JO |
773 | /* --no-call-graph */ |
774 | if (unset) { | |
72a128aa | 775 | callchain_param.record_mode = CALLCHAIN_NONE; |
09b0fd45 JO |
776 | pr_debug("callchain: disabled\n"); |
777 | return 0; | |
778 | } | |
779 | ||
f7f084f4 | 780 | ret = parse_callchain_record_opt(arg); |
26d33022 | 781 | if (!ret) |
72a128aa | 782 | callchain_debug(); |
26d33022 JO |
783 | |
784 | return ret; | |
785 | } | |
786 | ||
72a128aa | 787 | int record_callchain_opt(const struct option *opt __maybe_unused, |
09b0fd45 JO |
788 | const char *arg __maybe_unused, |
789 | int unset __maybe_unused) | |
790 | { | |
72a128aa | 791 | callchain_param.enabled = true; |
09b0fd45 | 792 | |
72a128aa NK |
793 | if (callchain_param.record_mode == CALLCHAIN_NONE) |
794 | callchain_param.record_mode = CALLCHAIN_FP; | |
eb853e80 | 795 | |
72a128aa | 796 | callchain_debug(); |
09b0fd45 JO |
797 | return 0; |
798 | } | |
799 | ||
eb853e80 JO |
800 | static int perf_record_config(const char *var, const char *value, void *cb) |
801 | { | |
eb853e80 | 802 | if (!strcmp(var, "record.call-graph")) |
5a2e5e85 | 803 | var = "call-graph.record-mode"; /* fall-through */ |
eb853e80 JO |
804 | |
805 | return perf_default_config(var, value, cb); | |
806 | } | |
807 | ||
814c8c38 PZ |
808 | struct clockid_map { |
809 | const char *name; | |
810 | int clockid; | |
811 | }; | |
812 | ||
813 | #define CLOCKID_MAP(n, c) \ | |
814 | { .name = n, .clockid = (c), } | |
815 | ||
816 | #define CLOCKID_END { .name = NULL, } | |
817 | ||
818 | ||
819 | /* | |
820 | * Add the missing ones, we need to build on many distros... | |
821 | */ | |
822 | #ifndef CLOCK_MONOTONIC_RAW | |
823 | #define CLOCK_MONOTONIC_RAW 4 | |
824 | #endif | |
825 | #ifndef CLOCK_BOOTTIME | |
826 | #define CLOCK_BOOTTIME 7 | |
827 | #endif | |
828 | #ifndef CLOCK_TAI | |
829 | #define CLOCK_TAI 11 | |
830 | #endif | |
831 | ||
832 | static const struct clockid_map clockids[] = { | |
833 | /* available for all events, NMI safe */ | |
834 | CLOCKID_MAP("monotonic", CLOCK_MONOTONIC), | |
835 | CLOCKID_MAP("monotonic_raw", CLOCK_MONOTONIC_RAW), | |
836 | ||
837 | /* available for some events */ | |
838 | CLOCKID_MAP("realtime", CLOCK_REALTIME), | |
839 | CLOCKID_MAP("boottime", CLOCK_BOOTTIME), | |
840 | CLOCKID_MAP("tai", CLOCK_TAI), | |
841 | ||
842 | /* available for the lazy */ | |
843 | CLOCKID_MAP("mono", CLOCK_MONOTONIC), | |
844 | CLOCKID_MAP("raw", CLOCK_MONOTONIC_RAW), | |
845 | CLOCKID_MAP("real", CLOCK_REALTIME), | |
846 | CLOCKID_MAP("boot", CLOCK_BOOTTIME), | |
847 | ||
848 | CLOCKID_END, | |
849 | }; | |
850 | ||
851 | static int parse_clockid(const struct option *opt, const char *str, int unset) | |
852 | { | |
853 | struct record_opts *opts = (struct record_opts *)opt->value; | |
854 | const struct clockid_map *cm; | |
855 | const char *ostr = str; | |
856 | ||
857 | if (unset) { | |
858 | opts->use_clockid = 0; | |
859 | return 0; | |
860 | } | |
861 | ||
862 | /* no arg passed */ | |
863 | if (!str) | |
864 | return 0; | |
865 | ||
866 | /* no setting it twice */ | |
867 | if (opts->use_clockid) | |
868 | return -1; | |
869 | ||
870 | opts->use_clockid = true; | |
871 | ||
872 | /* if its a number, we're done */ | |
873 | if (sscanf(str, "%d", &opts->clockid) == 1) | |
874 | return 0; | |
875 | ||
876 | /* allow a "CLOCK_" prefix to the name */ | |
877 | if (!strncasecmp(str, "CLOCK_", 6)) | |
878 | str += 6; | |
879 | ||
880 | for (cm = clockids; cm->name; cm++) { | |
881 | if (!strcasecmp(str, cm->name)) { | |
882 | opts->clockid = cm->clockid; | |
883 | return 0; | |
884 | } | |
885 | } | |
886 | ||
887 | opts->use_clockid = false; | |
888 | ui__warning("unknown clockid %s, check man page\n", ostr); | |
889 | return -1; | |
890 | } | |
891 | ||
e9db1310 AH |
892 | static int record__parse_mmap_pages(const struct option *opt, |
893 | const char *str, | |
894 | int unset __maybe_unused) | |
895 | { | |
896 | struct record_opts *opts = opt->value; | |
897 | char *s, *p; | |
898 | unsigned int mmap_pages; | |
899 | int ret; | |
900 | ||
901 | if (!str) | |
902 | return -EINVAL; | |
903 | ||
904 | s = strdup(str); | |
905 | if (!s) | |
906 | return -ENOMEM; | |
907 | ||
908 | p = strchr(s, ','); | |
909 | if (p) | |
910 | *p = '\0'; | |
911 | ||
912 | if (*s) { | |
913 | ret = __perf_evlist__parse_mmap_pages(&mmap_pages, s); | |
914 | if (ret) | |
915 | goto out_free; | |
916 | opts->mmap_pages = mmap_pages; | |
917 | } | |
918 | ||
919 | if (!p) { | |
920 | ret = 0; | |
921 | goto out_free; | |
922 | } | |
923 | ||
924 | ret = __perf_evlist__parse_mmap_pages(&mmap_pages, p + 1); | |
925 | if (ret) | |
926 | goto out_free; | |
927 | ||
928 | opts->auxtrace_mmap_pages = mmap_pages; | |
929 | ||
930 | out_free: | |
931 | free(s); | |
932 | return ret; | |
933 | } | |
934 | ||
e5b2c207 | 935 | static const char * const __record_usage[] = { |
9e096753 MG |
936 | "perf record [<options>] [<command>]", |
937 | "perf record [<options>] -- <command> [<options>]", | |
0e9b20b8 IM |
938 | NULL |
939 | }; | |
e5b2c207 | 940 | const char * const *record_usage = __record_usage; |
0e9b20b8 | 941 | |
d20deb64 | 942 | /* |
8c6f45a7 ACM |
943 | * XXX Ideally would be local to cmd_record() and passed to a record__new |
944 | * because we need to have access to it in record__exit, that is called | |
d20deb64 ACM |
945 | * after cmd_record() exits, but since record_options need to be accessible to |
946 | * builtin-script, leave it here. | |
947 | * | |
948 | * At least we don't ouch it in all the other functions here directly. | |
949 | * | |
950 | * Just say no to tons of global variables, sigh. | |
951 | */ | |
8c6f45a7 | 952 | static struct record record = { |
d20deb64 | 953 | .opts = { |
8affc2b8 | 954 | .sample_time = true, |
d20deb64 ACM |
955 | .mmap_pages = UINT_MAX, |
956 | .user_freq = UINT_MAX, | |
957 | .user_interval = ULLONG_MAX, | |
447a6013 | 958 | .freq = 4000, |
d1cb9fce NK |
959 | .target = { |
960 | .uses_mmap = true, | |
3aa5939d | 961 | .default_per_cpu = true, |
d1cb9fce | 962 | }, |
9d9cad76 | 963 | .proc_map_timeout = 500, |
d20deb64 | 964 | }, |
e3d59112 NK |
965 | .tool = { |
966 | .sample = process_sample_event, | |
967 | .fork = perf_event__process_fork, | |
968 | .comm = perf_event__process_comm, | |
969 | .mmap = perf_event__process_mmap, | |
970 | .mmap2 = perf_event__process_mmap2, | |
971 | }, | |
d20deb64 | 972 | }; |
7865e817 | 973 | |
09b0fd45 | 974 | #define CALLCHAIN_HELP "setup and enables call-graph (stack chain/backtrace) recording: " |
61eaa3be | 975 | |
9ff125d1 | 976 | #ifdef HAVE_DWARF_UNWIND_SUPPORT |
aad2b21c | 977 | const char record_callchain_help[] = CALLCHAIN_HELP "fp dwarf lbr"; |
61eaa3be | 978 | #else |
aad2b21c | 979 | const char record_callchain_help[] = CALLCHAIN_HELP "fp lbr"; |
61eaa3be ACM |
980 | #endif |
981 | ||
d20deb64 ACM |
982 | /* |
983 | * XXX Will stay a global variable till we fix builtin-script.c to stop messing | |
984 | * with it and switch to use the library functions in perf_evlist that came | |
b4006796 | 985 | * from builtin-record.c, i.e. use record_opts, |
d20deb64 ACM |
986 | * perf_evlist__prepare_workload, etc instead of fork+exec'in 'perf record', |
987 | * using pipes, etc. | |
988 | */ | |
e5b2c207 | 989 | struct option __record_options[] = { |
d20deb64 | 990 | OPT_CALLBACK('e', "event", &record.evlist, "event", |
86847b62 | 991 | "event selector. use 'perf list' to list available events", |
f120f9d5 | 992 | parse_events_option), |
d20deb64 | 993 | OPT_CALLBACK(0, "filter", &record.evlist, "filter", |
c171b552 | 994 | "event filter", parse_filter), |
bea03405 | 995 | OPT_STRING('p', "pid", &record.opts.target.pid, "pid", |
d6d901c2 | 996 | "record events on existing process id"), |
bea03405 | 997 | OPT_STRING('t', "tid", &record.opts.target.tid, "tid", |
d6d901c2 | 998 | "record events on existing thread id"), |
d20deb64 | 999 | OPT_INTEGER('r', "realtime", &record.realtime_prio, |
0e9b20b8 | 1000 | "collect data with this RT SCHED_FIFO priority"), |
509051ea | 1001 | OPT_BOOLEAN(0, "no-buffering", &record.opts.no_buffering, |
acac03fa | 1002 | "collect data without buffering"), |
d20deb64 | 1003 | OPT_BOOLEAN('R', "raw-samples", &record.opts.raw_samples, |
daac07b2 | 1004 | "collect raw sample records from all opened counters"), |
bea03405 | 1005 | OPT_BOOLEAN('a', "all-cpus", &record.opts.target.system_wide, |
0e9b20b8 | 1006 | "system-wide collection from all CPUs"), |
bea03405 | 1007 | OPT_STRING('C', "cpu", &record.opts.target.cpu_list, "cpu", |
c45c6ea2 | 1008 | "list of cpus to monitor"), |
d20deb64 | 1009 | OPT_U64('c', "count", &record.opts.user_interval, "event period to sample"), |
f5fc1412 | 1010 | OPT_STRING('o', "output", &record.file.path, "file", |
abaff32a | 1011 | "output file name"), |
69e7e5b0 AH |
1012 | OPT_BOOLEAN_SET('i', "no-inherit", &record.opts.no_inherit, |
1013 | &record.opts.no_inherit_set, | |
1014 | "child tasks do not inherit counters"), | |
d20deb64 | 1015 | OPT_UINTEGER('F', "freq", &record.opts.user_freq, "profile at this frequency"), |
e9db1310 AH |
1016 | OPT_CALLBACK('m', "mmap-pages", &record.opts, "pages[,pages]", |
1017 | "number of mmap data pages and AUX area tracing mmap pages", | |
1018 | record__parse_mmap_pages), | |
d20deb64 | 1019 | OPT_BOOLEAN(0, "group", &record.opts.group, |
43bece79 | 1020 | "put the counters into a counter group"), |
09b0fd45 JO |
1021 | OPT_CALLBACK_NOOPT('g', NULL, &record.opts, |
1022 | NULL, "enables call-graph recording" , | |
1023 | &record_callchain_opt), | |
1024 | OPT_CALLBACK(0, "call-graph", &record.opts, | |
1025 | "mode[,dump_size]", record_callchain_help, | |
1026 | &record_parse_callchain_opt), | |
c0555642 | 1027 | OPT_INCR('v', "verbose", &verbose, |
3da297a6 | 1028 | "be more verbose (show counter open errors, etc)"), |
b44308f5 | 1029 | OPT_BOOLEAN('q', "quiet", &quiet, "don't print any message"), |
d20deb64 | 1030 | OPT_BOOLEAN('s', "stat", &record.opts.inherit_stat, |
649c48a9 | 1031 | "per thread counts"), |
56100321 PZ |
1032 | OPT_BOOLEAN('d', "data", &record.opts.sample_address, "Record the sample addresses"), |
1033 | OPT_BOOLEAN('T', "timestamp", &record.opts.sample_time, "Record the sample timestamps"), | |
1034 | OPT_BOOLEAN('P', "period", &record.opts.period, "Record the sample period"), | |
d20deb64 | 1035 | OPT_BOOLEAN('n', "no-samples", &record.opts.no_samples, |
649c48a9 | 1036 | "don't sample"), |
d20deb64 | 1037 | OPT_BOOLEAN('N', "no-buildid-cache", &record.no_buildid_cache, |
a1ac1d3c | 1038 | "do not update the buildid cache"), |
d20deb64 | 1039 | OPT_BOOLEAN('B', "no-buildid", &record.no_buildid, |
baa2f6ce | 1040 | "do not collect buildids in perf.data"), |
d20deb64 | 1041 | OPT_CALLBACK('G', "cgroup", &record.evlist, "name", |
023695d9 SE |
1042 | "monitor event in cgroup name only", |
1043 | parse_cgroups), | |
a6205a35 | 1044 | OPT_UINTEGER('D', "delay", &record.opts.initial_delay, |
6619a53e | 1045 | "ms to wait before starting measurement after program start"), |
bea03405 NK |
1046 | OPT_STRING('u', "uid", &record.opts.target.uid_str, "user", |
1047 | "user to profile"), | |
a5aabdac SE |
1048 | |
1049 | OPT_CALLBACK_NOOPT('b', "branch-any", &record.opts.branch_stack, | |
1050 | "branch any", "sample any taken branches", | |
1051 | parse_branch_stack), | |
1052 | ||
1053 | OPT_CALLBACK('j', "branch-filter", &record.opts.branch_stack, | |
1054 | "branch filter mask", "branch stack filter modes", | |
bdfebd84 | 1055 | parse_branch_stack), |
05484298 AK |
1056 | OPT_BOOLEAN('W', "weight", &record.opts.sample_weight, |
1057 | "sample by weight (on special events only)"), | |
475eeab9 AK |
1058 | OPT_BOOLEAN(0, "transaction", &record.opts.sample_transaction, |
1059 | "sample transaction flags (special events only)"), | |
3aa5939d AH |
1060 | OPT_BOOLEAN(0, "per-thread", &record.opts.target.per_thread, |
1061 | "use per-thread mmaps"), | |
4b6c5177 SE |
1062 | OPT_BOOLEAN('I', "intr-regs", &record.opts.sample_intr_regs, |
1063 | "Sample machine registers on interrupt"), | |
85c273d2 AK |
1064 | OPT_BOOLEAN(0, "running-time", &record.opts.running_time, |
1065 | "Record running/enabled time of read (:S) events"), | |
814c8c38 PZ |
1066 | OPT_CALLBACK('k', "clockid", &record.opts, |
1067 | "clockid", "clockid to use for events, see clock_gettime()", | |
1068 | parse_clockid), | |
2dd6d8a1 AH |
1069 | OPT_STRING_OPTARG('S', "snapshot", &record.opts.auxtrace_snapshot_opts, |
1070 | "opts", "AUX area tracing Snapshot Mode", ""), | |
9d9cad76 KL |
1071 | OPT_UINTEGER(0, "proc-map-timeout", &record.opts.proc_map_timeout, |
1072 | "per thread proc mmap processing timeout in ms"), | |
0e9b20b8 IM |
1073 | OPT_END() |
1074 | }; | |
1075 | ||
e5b2c207 NK |
1076 | struct option *record_options = __record_options; |
1077 | ||
1d037ca1 | 1078 | int cmd_record(int argc, const char **argv, const char *prefix __maybe_unused) |
0e9b20b8 | 1079 | { |
ef149c25 | 1080 | int err; |
8c6f45a7 | 1081 | struct record *rec = &record; |
16ad2ffb | 1082 | char errbuf[BUFSIZ]; |
0e9b20b8 | 1083 | |
3e2be2da ACM |
1084 | rec->evlist = perf_evlist__new(); |
1085 | if (rec->evlist == NULL) | |
361c99a6 ACM |
1086 | return -ENOMEM; |
1087 | ||
eb853e80 JO |
1088 | perf_config(perf_record_config, rec); |
1089 | ||
bca647aa | 1090 | argc = parse_options(argc, argv, record_options, record_usage, |
655000e7 | 1091 | PARSE_OPT_STOP_AT_NON_OPTION); |
602ad878 | 1092 | if (!argc && target__none(&rec->opts.target)) |
bca647aa | 1093 | usage_with_options(record_usage, record_options); |
0e9b20b8 | 1094 | |
bea03405 | 1095 | if (nr_cgroups && !rec->opts.target.system_wide) { |
3780f488 NK |
1096 | ui__error("cgroup monitoring only available in" |
1097 | " system-wide mode\n"); | |
023695d9 SE |
1098 | usage_with_options(record_usage, record_options); |
1099 | } | |
1100 | ||
ef149c25 AH |
1101 | if (!rec->itr) { |
1102 | rec->itr = auxtrace_record__init(rec->evlist, &err); | |
1103 | if (err) | |
1104 | return err; | |
1105 | } | |
1106 | ||
2dd6d8a1 AH |
1107 | err = auxtrace_parse_snapshot_options(rec->itr, &rec->opts, |
1108 | rec->opts.auxtrace_snapshot_opts); | |
1109 | if (err) | |
1110 | return err; | |
1111 | ||
ef149c25 AH |
1112 | err = -ENOMEM; |
1113 | ||
0a7e6d1b | 1114 | symbol__init(NULL); |
baa2f6ce | 1115 | |
ec80fde7 | 1116 | if (symbol_conf.kptr_restrict) |
646aaea6 ACM |
1117 | pr_warning( |
1118 | "WARNING: Kernel address maps (/proc/{kallsyms,modules}) are restricted,\n" | |
1119 | "check /proc/sys/kernel/kptr_restrict.\n\n" | |
1120 | "Samples in kernel functions may not be resolved if a suitable vmlinux\n" | |
1121 | "file is not found in the buildid cache or in the vmlinux path.\n\n" | |
1122 | "Samples in kernel modules won't be resolved at all.\n\n" | |
1123 | "If some relocation was applied (e.g. kexec) symbols may be misresolved\n" | |
1124 | "even with a suitable vmlinux or kallsyms file.\n\n"); | |
ec80fde7 | 1125 | |
d20deb64 | 1126 | if (rec->no_buildid_cache || rec->no_buildid) |
a1ac1d3c | 1127 | disable_buildid_cache(); |
655000e7 | 1128 | |
3e2be2da ACM |
1129 | if (rec->evlist->nr_entries == 0 && |
1130 | perf_evlist__add_default(rec->evlist) < 0) { | |
69aad6f1 ACM |
1131 | pr_err("Not enough memory for event selector list\n"); |
1132 | goto out_symbol_exit; | |
bbd36e5e | 1133 | } |
0e9b20b8 | 1134 | |
69e7e5b0 AH |
1135 | if (rec->opts.target.tid && !rec->opts.no_inherit_set) |
1136 | rec->opts.no_inherit = true; | |
1137 | ||
602ad878 | 1138 | err = target__validate(&rec->opts.target); |
16ad2ffb | 1139 | if (err) { |
602ad878 | 1140 | target__strerror(&rec->opts.target, err, errbuf, BUFSIZ); |
16ad2ffb NK |
1141 | ui__warning("%s", errbuf); |
1142 | } | |
1143 | ||
602ad878 | 1144 | err = target__parse_uid(&rec->opts.target); |
16ad2ffb NK |
1145 | if (err) { |
1146 | int saved_errno = errno; | |
4bd0f2d2 | 1147 | |
602ad878 | 1148 | target__strerror(&rec->opts.target, err, errbuf, BUFSIZ); |
3780f488 | 1149 | ui__error("%s", errbuf); |
16ad2ffb NK |
1150 | |
1151 | err = -saved_errno; | |
8fa60e1f | 1152 | goto out_symbol_exit; |
16ad2ffb | 1153 | } |
0d37aa34 | 1154 | |
16ad2ffb | 1155 | err = -ENOMEM; |
3e2be2da | 1156 | if (perf_evlist__create_maps(rec->evlist, &rec->opts.target) < 0) |
dd7927f4 | 1157 | usage_with_options(record_usage, record_options); |
69aad6f1 | 1158 | |
ef149c25 AH |
1159 | err = auxtrace_record__options(rec->itr, rec->evlist, &rec->opts); |
1160 | if (err) | |
1161 | goto out_symbol_exit; | |
1162 | ||
b4006796 | 1163 | if (record_opts__config(&rec->opts)) { |
39d17dac | 1164 | err = -EINVAL; |
03ad9747 | 1165 | goto out_symbol_exit; |
7e4ff9e3 MG |
1166 | } |
1167 | ||
d20deb64 | 1168 | err = __cmd_record(&record, argc, argv); |
d65a458b | 1169 | out_symbol_exit: |
45604710 | 1170 | perf_evlist__delete(rec->evlist); |
d65a458b | 1171 | symbol__exit(); |
ef149c25 | 1172 | auxtrace_record__free(rec->itr); |
39d17dac | 1173 | return err; |
0e9b20b8 | 1174 | } |
2dd6d8a1 AH |
1175 | |
1176 | static void snapshot_sig_handler(int sig __maybe_unused) | |
1177 | { | |
1178 | if (!auxtrace_snapshot_enabled) | |
1179 | return; | |
1180 | auxtrace_snapshot_enabled = 0; | |
1181 | auxtrace_snapshot_err = auxtrace_record__snapshot_start(record.itr); | |
1182 | auxtrace_record__snapshot_started = 1; | |
1183 | } |