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" |
bcc84ec6 | 30 | #include "util/perf_regs.h" |
ef149c25 | 31 | #include "util/auxtrace.h" |
f00898f4 | 32 | #include "util/parse-branch-options.h" |
bcc84ec6 | 33 | #include "util/parse-regs-options.h" |
7c6a1c65 | 34 | |
97124d5e | 35 | #include <unistd.h> |
de9ac07b | 36 | #include <sched.h> |
a41794cd | 37 | #include <sys/mman.h> |
de9ac07b | 38 | |
78da39fa | 39 | |
8c6f45a7 | 40 | struct record { |
45694aa7 | 41 | struct perf_tool tool; |
b4006796 | 42 | struct record_opts opts; |
d20deb64 | 43 | u64 bytes_written; |
f5fc1412 | 44 | struct perf_data_file file; |
ef149c25 | 45 | struct auxtrace_record *itr; |
d20deb64 ACM |
46 | struct perf_evlist *evlist; |
47 | struct perf_session *session; | |
48 | const char *progname; | |
d20deb64 | 49 | int realtime_prio; |
d20deb64 ACM |
50 | bool no_buildid; |
51 | bool no_buildid_cache; | |
d20deb64 | 52 | long samples; |
0f82ebc4 | 53 | }; |
a21ca2ca | 54 | |
8c6f45a7 | 55 | static int record__write(struct record *rec, void *bf, size_t size) |
f5970550 | 56 | { |
cf8b2e69 | 57 | if (perf_data_file__write(rec->session->file, bf, size) < 0) { |
50a9b868 JO |
58 | pr_err("failed to write perf data, error: %m\n"); |
59 | return -1; | |
f5970550 | 60 | } |
8d3eca20 | 61 | |
cf8b2e69 | 62 | rec->bytes_written += size; |
8d3eca20 | 63 | return 0; |
f5970550 PZ |
64 | } |
65 | ||
45694aa7 | 66 | static int process_synthesized_event(struct perf_tool *tool, |
d20deb64 | 67 | union perf_event *event, |
1d037ca1 IT |
68 | struct perf_sample *sample __maybe_unused, |
69 | struct machine *machine __maybe_unused) | |
234fbbf5 | 70 | { |
8c6f45a7 ACM |
71 | struct record *rec = container_of(tool, struct record, tool); |
72 | return record__write(rec, event, event->header.size); | |
234fbbf5 ACM |
73 | } |
74 | ||
e5685730 | 75 | static int record__mmap_read(struct record *rec, int idx) |
de9ac07b | 76 | { |
e5685730 | 77 | struct perf_mmap *md = &rec->evlist->mmap[idx]; |
7b8283b5 DA |
78 | u64 head = perf_mmap__read_head(md); |
79 | u64 old = md->prev; | |
918512b4 | 80 | unsigned char *data = md->base + page_size; |
de9ac07b PZ |
81 | unsigned long size; |
82 | void *buf; | |
8d3eca20 | 83 | int rc = 0; |
de9ac07b | 84 | |
dc82009a | 85 | if (old == head) |
8d3eca20 | 86 | return 0; |
dc82009a | 87 | |
d20deb64 | 88 | rec->samples++; |
de9ac07b PZ |
89 | |
90 | size = head - old; | |
91 | ||
92 | if ((old & md->mask) + size != (head & md->mask)) { | |
93 | buf = &data[old & md->mask]; | |
94 | size = md->mask + 1 - (old & md->mask); | |
95 | old += size; | |
021e9f47 | 96 | |
8c6f45a7 | 97 | if (record__write(rec, buf, size) < 0) { |
8d3eca20 DA |
98 | rc = -1; |
99 | goto out; | |
100 | } | |
de9ac07b PZ |
101 | } |
102 | ||
103 | buf = &data[old & md->mask]; | |
104 | size = head - old; | |
105 | old += size; | |
021e9f47 | 106 | |
8c6f45a7 | 107 | if (record__write(rec, buf, size) < 0) { |
8d3eca20 DA |
108 | rc = -1; |
109 | goto out; | |
110 | } | |
de9ac07b PZ |
111 | |
112 | md->prev = old; | |
e5685730 | 113 | perf_evlist__mmap_consume(rec->evlist, idx); |
8d3eca20 DA |
114 | out: |
115 | return rc; | |
de9ac07b PZ |
116 | } |
117 | ||
2dd6d8a1 AH |
118 | static volatile int done; |
119 | static volatile int signr = -1; | |
120 | static volatile int child_finished; | |
121 | static volatile int auxtrace_snapshot_enabled; | |
122 | static volatile int auxtrace_snapshot_err; | |
123 | static volatile int auxtrace_record__snapshot_started; | |
124 | ||
125 | static void sig_handler(int sig) | |
126 | { | |
127 | if (sig == SIGCHLD) | |
128 | child_finished = 1; | |
129 | else | |
130 | signr = sig; | |
131 | ||
132 | done = 1; | |
133 | } | |
134 | ||
135 | static void record__sig_exit(void) | |
136 | { | |
137 | if (signr == -1) | |
138 | return; | |
139 | ||
140 | signal(signr, SIG_DFL); | |
141 | raise(signr); | |
142 | } | |
143 | ||
e31f0d01 AH |
144 | #ifdef HAVE_AUXTRACE_SUPPORT |
145 | ||
ef149c25 AH |
146 | static int record__process_auxtrace(struct perf_tool *tool, |
147 | union perf_event *event, void *data1, | |
148 | size_t len1, void *data2, size_t len2) | |
149 | { | |
150 | struct record *rec = container_of(tool, struct record, tool); | |
99fa2984 | 151 | struct perf_data_file *file = &rec->file; |
ef149c25 AH |
152 | size_t padding; |
153 | u8 pad[8] = {0}; | |
154 | ||
99fa2984 AH |
155 | if (!perf_data_file__is_pipe(file)) { |
156 | off_t file_offset; | |
157 | int fd = perf_data_file__fd(file); | |
158 | int err; | |
159 | ||
160 | file_offset = lseek(fd, 0, SEEK_CUR); | |
161 | if (file_offset == -1) | |
162 | return -1; | |
163 | err = auxtrace_index__auxtrace_event(&rec->session->auxtrace_index, | |
164 | event, file_offset); | |
165 | if (err) | |
166 | return err; | |
167 | } | |
168 | ||
ef149c25 AH |
169 | /* event.auxtrace.size includes padding, see __auxtrace_mmap__read() */ |
170 | padding = (len1 + len2) & 7; | |
171 | if (padding) | |
172 | padding = 8 - padding; | |
173 | ||
174 | record__write(rec, event, event->header.size); | |
175 | record__write(rec, data1, len1); | |
176 | if (len2) | |
177 | record__write(rec, data2, len2); | |
178 | record__write(rec, &pad, padding); | |
179 | ||
180 | return 0; | |
181 | } | |
182 | ||
183 | static int record__auxtrace_mmap_read(struct record *rec, | |
184 | struct auxtrace_mmap *mm) | |
185 | { | |
186 | int ret; | |
187 | ||
188 | ret = auxtrace_mmap__read(mm, rec->itr, &rec->tool, | |
189 | record__process_auxtrace); | |
190 | if (ret < 0) | |
191 | return ret; | |
192 | ||
193 | if (ret) | |
194 | rec->samples++; | |
195 | ||
196 | return 0; | |
197 | } | |
198 | ||
2dd6d8a1 AH |
199 | static int record__auxtrace_mmap_read_snapshot(struct record *rec, |
200 | struct auxtrace_mmap *mm) | |
201 | { | |
202 | int ret; | |
203 | ||
204 | ret = auxtrace_mmap__read_snapshot(mm, rec->itr, &rec->tool, | |
205 | record__process_auxtrace, | |
206 | rec->opts.auxtrace_snapshot_size); | |
207 | if (ret < 0) | |
208 | return ret; | |
209 | ||
210 | if (ret) | |
211 | rec->samples++; | |
212 | ||
213 | return 0; | |
214 | } | |
215 | ||
216 | static int record__auxtrace_read_snapshot_all(struct record *rec) | |
217 | { | |
218 | int i; | |
219 | int rc = 0; | |
220 | ||
221 | for (i = 0; i < rec->evlist->nr_mmaps; i++) { | |
222 | struct auxtrace_mmap *mm = | |
223 | &rec->evlist->mmap[i].auxtrace_mmap; | |
224 | ||
225 | if (!mm->base) | |
226 | continue; | |
227 | ||
228 | if (record__auxtrace_mmap_read_snapshot(rec, mm) != 0) { | |
229 | rc = -1; | |
230 | goto out; | |
231 | } | |
232 | } | |
233 | out: | |
234 | return rc; | |
235 | } | |
236 | ||
237 | static void record__read_auxtrace_snapshot(struct record *rec) | |
238 | { | |
239 | pr_debug("Recording AUX area tracing snapshot\n"); | |
240 | if (record__auxtrace_read_snapshot_all(rec) < 0) { | |
241 | auxtrace_snapshot_err = -1; | |
242 | } else { | |
243 | auxtrace_snapshot_err = auxtrace_record__snapshot_finish(rec->itr); | |
244 | if (!auxtrace_snapshot_err) | |
245 | auxtrace_snapshot_enabled = 1; | |
246 | } | |
247 | } | |
248 | ||
e31f0d01 AH |
249 | #else |
250 | ||
251 | static inline | |
252 | int record__auxtrace_mmap_read(struct record *rec __maybe_unused, | |
253 | struct auxtrace_mmap *mm __maybe_unused) | |
254 | { | |
255 | return 0; | |
256 | } | |
257 | ||
2dd6d8a1 AH |
258 | static inline |
259 | void record__read_auxtrace_snapshot(struct record *rec __maybe_unused) | |
de9ac07b | 260 | { |
f7b7c26e PZ |
261 | } |
262 | ||
2dd6d8a1 AH |
263 | static inline |
264 | int auxtrace_record__snapshot_start(struct auxtrace_record *itr __maybe_unused) | |
f7b7c26e | 265 | { |
2dd6d8a1 | 266 | return 0; |
de9ac07b PZ |
267 | } |
268 | ||
2dd6d8a1 AH |
269 | #endif |
270 | ||
8c6f45a7 | 271 | static int record__open(struct record *rec) |
dd7927f4 | 272 | { |
56e52e85 | 273 | char msg[512]; |
6a4bb04c | 274 | struct perf_evsel *pos; |
d20deb64 ACM |
275 | struct perf_evlist *evlist = rec->evlist; |
276 | struct perf_session *session = rec->session; | |
b4006796 | 277 | struct record_opts *opts = &rec->opts; |
8d3eca20 | 278 | int rc = 0; |
dd7927f4 | 279 | |
f77a9518 | 280 | perf_evlist__config(evlist, opts); |
cac21425 | 281 | |
0050f7aa | 282 | evlist__for_each(evlist, pos) { |
dd7927f4 | 283 | try_again: |
d988d5ee | 284 | if (perf_evsel__open(pos, pos->cpus, pos->threads) < 0) { |
56e52e85 | 285 | if (perf_evsel__fallback(pos, errno, msg, sizeof(msg))) { |
d6d901c2 | 286 | if (verbose) |
c0a54341 | 287 | ui__warning("%s\n", msg); |
d6d901c2 ZY |
288 | goto try_again; |
289 | } | |
ca6a4258 | 290 | |
56e52e85 ACM |
291 | rc = -errno; |
292 | perf_evsel__open_strerror(pos, &opts->target, | |
293 | errno, msg, sizeof(msg)); | |
294 | ui__error("%s\n", msg); | |
8d3eca20 | 295 | goto out; |
c171b552 LZ |
296 | } |
297 | } | |
a43d3f08 | 298 | |
23d4aad4 ACM |
299 | if (perf_evlist__apply_filters(evlist, &pos)) { |
300 | error("failed to set filter \"%s\" on event %s with %d (%s)\n", | |
301 | pos->filter, perf_evsel__name(pos), errno, | |
35550da3 | 302 | strerror_r(errno, msg, sizeof(msg))); |
8d3eca20 DA |
303 | rc = -1; |
304 | goto out; | |
0a102479 FW |
305 | } |
306 | ||
ef149c25 | 307 | if (perf_evlist__mmap_ex(evlist, opts->mmap_pages, false, |
2dd6d8a1 AH |
308 | opts->auxtrace_mmap_pages, |
309 | opts->auxtrace_snapshot_mode) < 0) { | |
8d3eca20 DA |
310 | if (errno == EPERM) { |
311 | pr_err("Permission error mapping pages.\n" | |
312 | "Consider increasing " | |
313 | "/proc/sys/kernel/perf_event_mlock_kb,\n" | |
314 | "or try again with a smaller value of -m/--mmap_pages.\n" | |
ef149c25 AH |
315 | "(current value: %u,%u)\n", |
316 | opts->mmap_pages, opts->auxtrace_mmap_pages); | |
8d3eca20 | 317 | rc = -errno; |
8d3eca20 | 318 | } else { |
35550da3 MH |
319 | pr_err("failed to mmap with %d (%s)\n", errno, |
320 | strerror_r(errno, msg, sizeof(msg))); | |
8d3eca20 DA |
321 | rc = -errno; |
322 | } | |
323 | goto out; | |
18e60939 | 324 | } |
0a27d7f9 | 325 | |
563aecb2 | 326 | session->evlist = evlist; |
7b56cce2 | 327 | perf_session__set_id_hdr_size(session); |
8d3eca20 DA |
328 | out: |
329 | return rc; | |
16c8a109 PZ |
330 | } |
331 | ||
e3d59112 NK |
332 | static int process_sample_event(struct perf_tool *tool, |
333 | union perf_event *event, | |
334 | struct perf_sample *sample, | |
335 | struct perf_evsel *evsel, | |
336 | struct machine *machine) | |
337 | { | |
338 | struct record *rec = container_of(tool, struct record, tool); | |
339 | ||
340 | rec->samples++; | |
341 | ||
342 | return build_id__mark_dso_hit(tool, event, sample, evsel, machine); | |
343 | } | |
344 | ||
8c6f45a7 | 345 | static int process_buildids(struct record *rec) |
6122e4e4 | 346 | { |
f5fc1412 JO |
347 | struct perf_data_file *file = &rec->file; |
348 | struct perf_session *session = rec->session; | |
6122e4e4 | 349 | |
457ae94a | 350 | if (file->size == 0) |
9f591fd7 ACM |
351 | return 0; |
352 | ||
00dc8657 NK |
353 | /* |
354 | * During this process, it'll load kernel map and replace the | |
355 | * dso->long_name to a real pathname it found. In this case | |
356 | * we prefer the vmlinux path like | |
357 | * /lib/modules/3.16.4/build/vmlinux | |
358 | * | |
359 | * rather than build-id path (in debug directory). | |
360 | * $HOME/.debug/.build-id/f0/6e17aa50adf4d00b88925e03775de107611551 | |
361 | */ | |
362 | symbol_conf.ignore_vmlinux_buildid = true; | |
363 | ||
b7b61cbe | 364 | return perf_session__process_events(session); |
6122e4e4 ACM |
365 | } |
366 | ||
8115d60c | 367 | static void perf_event__synthesize_guest_os(struct machine *machine, void *data) |
a1645ce1 ZY |
368 | { |
369 | int err; | |
45694aa7 | 370 | struct perf_tool *tool = data; |
a1645ce1 ZY |
371 | /* |
372 | *As for guest kernel when processing subcommand record&report, | |
373 | *we arrange module mmap prior to guest kernel mmap and trigger | |
374 | *a preload dso because default guest module symbols are loaded | |
375 | *from guest kallsyms instead of /lib/modules/XXX/XXX. This | |
376 | *method is used to avoid symbol missing when the first addr is | |
377 | *in module instead of in guest kernel. | |
378 | */ | |
45694aa7 | 379 | err = perf_event__synthesize_modules(tool, process_synthesized_event, |
743eb868 | 380 | machine); |
a1645ce1 ZY |
381 | if (err < 0) |
382 | pr_err("Couldn't record guest kernel [%d]'s reference" | |
23346f21 | 383 | " relocation symbol.\n", machine->pid); |
a1645ce1 | 384 | |
a1645ce1 ZY |
385 | /* |
386 | * We use _stext for guest kernel because guest kernel's /proc/kallsyms | |
387 | * have no _text sometimes. | |
388 | */ | |
45694aa7 | 389 | err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event, |
0ae617be | 390 | machine); |
a1645ce1 ZY |
391 | if (err < 0) |
392 | pr_err("Couldn't record guest kernel [%d]'s reference" | |
23346f21 | 393 | " relocation symbol.\n", machine->pid); |
a1645ce1 ZY |
394 | } |
395 | ||
98402807 FW |
396 | static struct perf_event_header finished_round_event = { |
397 | .size = sizeof(struct perf_event_header), | |
398 | .type = PERF_RECORD_FINISHED_ROUND, | |
399 | }; | |
400 | ||
8c6f45a7 | 401 | static int record__mmap_read_all(struct record *rec) |
98402807 | 402 | { |
dcabb507 | 403 | u64 bytes_written = rec->bytes_written; |
0e2e63dd | 404 | int i; |
8d3eca20 | 405 | int rc = 0; |
98402807 | 406 | |
d20deb64 | 407 | for (i = 0; i < rec->evlist->nr_mmaps; i++) { |
ef149c25 AH |
408 | struct auxtrace_mmap *mm = &rec->evlist->mmap[i].auxtrace_mmap; |
409 | ||
8d3eca20 | 410 | if (rec->evlist->mmap[i].base) { |
e5685730 | 411 | if (record__mmap_read(rec, i) != 0) { |
8d3eca20 DA |
412 | rc = -1; |
413 | goto out; | |
414 | } | |
415 | } | |
ef149c25 | 416 | |
2dd6d8a1 | 417 | if (mm->base && !rec->opts.auxtrace_snapshot_mode && |
ef149c25 AH |
418 | record__auxtrace_mmap_read(rec, mm) != 0) { |
419 | rc = -1; | |
420 | goto out; | |
421 | } | |
98402807 FW |
422 | } |
423 | ||
dcabb507 JO |
424 | /* |
425 | * Mark the round finished in case we wrote | |
426 | * at least one event. | |
427 | */ | |
428 | if (bytes_written != rec->bytes_written) | |
429 | rc = record__write(rec, &finished_round_event, sizeof(finished_round_event)); | |
8d3eca20 DA |
430 | |
431 | out: | |
432 | return rc; | |
98402807 FW |
433 | } |
434 | ||
8c6f45a7 | 435 | static void record__init_features(struct record *rec) |
57706abc | 436 | { |
57706abc DA |
437 | struct perf_session *session = rec->session; |
438 | int feat; | |
439 | ||
440 | for (feat = HEADER_FIRST_FEATURE; feat < HEADER_LAST_FEATURE; feat++) | |
441 | perf_header__set_feat(&session->header, feat); | |
442 | ||
443 | if (rec->no_buildid) | |
444 | perf_header__clear_feat(&session->header, HEADER_BUILD_ID); | |
445 | ||
3e2be2da | 446 | if (!have_tracepoints(&rec->evlist->entries)) |
57706abc DA |
447 | perf_header__clear_feat(&session->header, HEADER_TRACING_DATA); |
448 | ||
449 | if (!rec->opts.branch_stack) | |
450 | perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK); | |
ef149c25 AH |
451 | |
452 | if (!rec->opts.full_auxtrace) | |
453 | perf_header__clear_feat(&session->header, HEADER_AUXTRACE); | |
57706abc DA |
454 | } |
455 | ||
f33cbe72 ACM |
456 | static volatile int workload_exec_errno; |
457 | ||
458 | /* | |
459 | * perf_evlist__prepare_workload will send a SIGUSR1 | |
460 | * if the fork fails, since we asked by setting its | |
461 | * want_signal to true. | |
462 | */ | |
45604710 NK |
463 | static void workload_exec_failed_signal(int signo __maybe_unused, |
464 | siginfo_t *info, | |
f33cbe72 ACM |
465 | void *ucontext __maybe_unused) |
466 | { | |
467 | workload_exec_errno = info->si_value.sival_int; | |
468 | done = 1; | |
f33cbe72 ACM |
469 | child_finished = 1; |
470 | } | |
471 | ||
2dd6d8a1 AH |
472 | static void snapshot_sig_handler(int sig); |
473 | ||
8c6f45a7 | 474 | static int __cmd_record(struct record *rec, int argc, const char **argv) |
16c8a109 | 475 | { |
57706abc | 476 | int err; |
45604710 | 477 | int status = 0; |
8b412664 | 478 | unsigned long waking = 0; |
46be604b | 479 | const bool forks = argc > 0; |
23346f21 | 480 | struct machine *machine; |
45694aa7 | 481 | struct perf_tool *tool = &rec->tool; |
b4006796 | 482 | struct record_opts *opts = &rec->opts; |
f5fc1412 | 483 | struct perf_data_file *file = &rec->file; |
d20deb64 | 484 | struct perf_session *session; |
6dcf45ef | 485 | bool disabled = false, draining = false; |
42aa276f | 486 | int fd; |
de9ac07b | 487 | |
d20deb64 | 488 | rec->progname = argv[0]; |
33e49ea7 | 489 | |
45604710 | 490 | atexit(record__sig_exit); |
f5970550 PZ |
491 | signal(SIGCHLD, sig_handler); |
492 | signal(SIGINT, sig_handler); | |
804f7ac7 | 493 | signal(SIGTERM, sig_handler); |
2dd6d8a1 AH |
494 | if (rec->opts.auxtrace_snapshot_mode) |
495 | signal(SIGUSR2, snapshot_sig_handler); | |
496 | else | |
497 | signal(SIGUSR2, SIG_IGN); | |
f5970550 | 498 | |
b7b61cbe | 499 | session = perf_session__new(file, false, tool); |
94c744b6 | 500 | if (session == NULL) { |
ffa91880 | 501 | pr_err("Perf session creation failed.\n"); |
a9a70bbc ACM |
502 | return -1; |
503 | } | |
504 | ||
42aa276f | 505 | fd = perf_data_file__fd(file); |
d20deb64 ACM |
506 | rec->session = session; |
507 | ||
8c6f45a7 | 508 | record__init_features(rec); |
330aa675 | 509 | |
d4db3f16 | 510 | if (forks) { |
3e2be2da | 511 | err = perf_evlist__prepare_workload(rec->evlist, &opts->target, |
f5fc1412 | 512 | argv, file->is_pipe, |
735f7e0b | 513 | workload_exec_failed_signal); |
35b9d88e ACM |
514 | if (err < 0) { |
515 | pr_err("Couldn't run the workload!\n"); | |
45604710 | 516 | status = err; |
35b9d88e | 517 | goto out_delete_session; |
856e9660 | 518 | } |
856e9660 PZ |
519 | } |
520 | ||
8c6f45a7 | 521 | if (record__open(rec) != 0) { |
8d3eca20 | 522 | err = -1; |
45604710 | 523 | goto out_child; |
8d3eca20 | 524 | } |
de9ac07b | 525 | |
cca8482c AH |
526 | /* |
527 | * Normally perf_session__new would do this, but it doesn't have the | |
528 | * evlist. | |
529 | */ | |
530 | if (rec->tool.ordered_events && !perf_evlist__sample_id_all(rec->evlist)) { | |
531 | pr_warning("WARNING: No sample_id_all support, falling back to unordered processing\n"); | |
532 | rec->tool.ordered_events = false; | |
533 | } | |
534 | ||
3e2be2da | 535 | if (!rec->evlist->nr_groups) |
a8bb559b NK |
536 | perf_header__clear_feat(&session->header, HEADER_GROUP_DESC); |
537 | ||
f5fc1412 | 538 | if (file->is_pipe) { |
42aa276f | 539 | err = perf_header__write_pipe(fd); |
529870e3 | 540 | if (err < 0) |
45604710 | 541 | goto out_child; |
563aecb2 | 542 | } else { |
42aa276f | 543 | err = perf_session__write_header(session, rec->evlist, fd, false); |
d5eed904 | 544 | if (err < 0) |
45604710 | 545 | goto out_child; |
56b03f3c ACM |
546 | } |
547 | ||
d3665498 | 548 | if (!rec->no_buildid |
e20960c0 | 549 | && !perf_header__has_feat(&session->header, HEADER_BUILD_ID)) { |
d3665498 | 550 | pr_err("Couldn't generate buildids. " |
e20960c0 | 551 | "Use --no-buildid to profile anyway.\n"); |
8d3eca20 | 552 | err = -1; |
45604710 | 553 | goto out_child; |
e20960c0 RR |
554 | } |
555 | ||
34ba5122 | 556 | machine = &session->machines.host; |
743eb868 | 557 | |
f5fc1412 | 558 | if (file->is_pipe) { |
45694aa7 | 559 | err = perf_event__synthesize_attrs(tool, session, |
d20deb64 | 560 | process_synthesized_event); |
2c46dbb5 TZ |
561 | if (err < 0) { |
562 | pr_err("Couldn't synthesize attrs.\n"); | |
45604710 | 563 | goto out_child; |
2c46dbb5 | 564 | } |
cd19a035 | 565 | |
3e2be2da | 566 | if (have_tracepoints(&rec->evlist->entries)) { |
63e0c771 TZ |
567 | /* |
568 | * FIXME err <= 0 here actually means that | |
569 | * there were no tracepoints so its not really | |
570 | * an error, just that we don't need to | |
571 | * synthesize anything. We really have to | |
572 | * return this more properly and also | |
573 | * propagate errors that now are calling die() | |
574 | */ | |
42aa276f | 575 | err = perf_event__synthesize_tracing_data(tool, fd, rec->evlist, |
743eb868 | 576 | process_synthesized_event); |
63e0c771 TZ |
577 | if (err <= 0) { |
578 | pr_err("Couldn't record tracing data.\n"); | |
45604710 | 579 | goto out_child; |
63e0c771 | 580 | } |
f34b9001 | 581 | rec->bytes_written += err; |
63e0c771 | 582 | } |
2c46dbb5 TZ |
583 | } |
584 | ||
ef149c25 AH |
585 | if (rec->opts.full_auxtrace) { |
586 | err = perf_event__synthesize_auxtrace_info(rec->itr, tool, | |
587 | session, process_synthesized_event); | |
588 | if (err) | |
589 | goto out_delete_session; | |
590 | } | |
591 | ||
45694aa7 | 592 | err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event, |
0ae617be | 593 | machine); |
c1a3a4b9 ACM |
594 | if (err < 0) |
595 | pr_err("Couldn't record kernel reference relocation symbol\n" | |
596 | "Symbol resolution may be skewed if relocation was used (e.g. kexec).\n" | |
597 | "Check /proc/kallsyms permission or run as root.\n"); | |
b7cece76 | 598 | |
45694aa7 | 599 | err = perf_event__synthesize_modules(tool, process_synthesized_event, |
743eb868 | 600 | machine); |
c1a3a4b9 ACM |
601 | if (err < 0) |
602 | pr_err("Couldn't record kernel module information.\n" | |
603 | "Symbol resolution may be skewed if relocation was used (e.g. kexec).\n" | |
604 | "Check /proc/modules permission or run as root.\n"); | |
605 | ||
7e383de4 | 606 | if (perf_guest) { |
876650e6 ACM |
607 | machines__process_guests(&session->machines, |
608 | perf_event__synthesize_guest_os, tool); | |
7e383de4 | 609 | } |
7c6a1c65 | 610 | |
3e2be2da | 611 | err = __machine__synthesize_threads(machine, tool, &opts->target, rec->evlist->threads, |
9d9cad76 KL |
612 | process_synthesized_event, opts->sample_address, |
613 | opts->proc_map_timeout); | |
8d3eca20 | 614 | if (err != 0) |
45604710 | 615 | goto out_child; |
8d3eca20 | 616 | |
d20deb64 | 617 | if (rec->realtime_prio) { |
de9ac07b PZ |
618 | struct sched_param param; |
619 | ||
d20deb64 | 620 | param.sched_priority = rec->realtime_prio; |
de9ac07b | 621 | if (sched_setscheduler(0, SCHED_FIFO, ¶m)) { |
6beba7ad | 622 | pr_err("Could not set realtime priority.\n"); |
8d3eca20 | 623 | err = -1; |
45604710 | 624 | goto out_child; |
de9ac07b PZ |
625 | } |
626 | } | |
627 | ||
774cb499 JO |
628 | /* |
629 | * When perf is starting the traced process, all the events | |
630 | * (apart from group members) have enable_on_exec=1 set, | |
631 | * so don't spoil it by prematurely enabling them. | |
632 | */ | |
6619a53e | 633 | if (!target__none(&opts->target) && !opts->initial_delay) |
3e2be2da | 634 | perf_evlist__enable(rec->evlist); |
764e16a3 | 635 | |
856e9660 PZ |
636 | /* |
637 | * Let the child rip | |
638 | */ | |
e803cf97 NK |
639 | if (forks) { |
640 | union perf_event event; | |
641 | /* | |
642 | * Some H/W events are generated before COMM event | |
643 | * which is emitted during exec(), so perf script | |
644 | * cannot see a correct process name for those events. | |
645 | * Synthesize COMM event to prevent it. | |
646 | */ | |
647 | perf_event__synthesize_comm(tool, &event, | |
648 | rec->evlist->workload.pid, | |
649 | process_synthesized_event, | |
650 | machine); | |
651 | ||
3e2be2da | 652 | perf_evlist__start_workload(rec->evlist); |
e803cf97 | 653 | } |
856e9660 | 654 | |
6619a53e AK |
655 | if (opts->initial_delay) { |
656 | usleep(opts->initial_delay * 1000); | |
657 | perf_evlist__enable(rec->evlist); | |
658 | } | |
659 | ||
2dd6d8a1 | 660 | auxtrace_snapshot_enabled = 1; |
649c48a9 | 661 | for (;;) { |
d20deb64 | 662 | int hits = rec->samples; |
de9ac07b | 663 | |
8c6f45a7 | 664 | if (record__mmap_read_all(rec) < 0) { |
2dd6d8a1 | 665 | auxtrace_snapshot_enabled = 0; |
8d3eca20 | 666 | err = -1; |
45604710 | 667 | goto out_child; |
8d3eca20 | 668 | } |
de9ac07b | 669 | |
2dd6d8a1 AH |
670 | if (auxtrace_record__snapshot_started) { |
671 | auxtrace_record__snapshot_started = 0; | |
672 | if (!auxtrace_snapshot_err) | |
673 | record__read_auxtrace_snapshot(rec); | |
674 | if (auxtrace_snapshot_err) { | |
675 | pr_err("AUX area tracing snapshot failed\n"); | |
676 | err = -1; | |
677 | goto out_child; | |
678 | } | |
679 | } | |
680 | ||
d20deb64 | 681 | if (hits == rec->samples) { |
6dcf45ef | 682 | if (done || draining) |
649c48a9 | 683 | break; |
f66a889d | 684 | err = perf_evlist__poll(rec->evlist, -1); |
a515114f JO |
685 | /* |
686 | * Propagate error, only if there's any. Ignore positive | |
687 | * number of returned events and interrupt error. | |
688 | */ | |
689 | if (err > 0 || (err < 0 && errno == EINTR)) | |
45604710 | 690 | err = 0; |
8b412664 | 691 | waking++; |
6dcf45ef ACM |
692 | |
693 | if (perf_evlist__filter_pollfd(rec->evlist, POLLERR | POLLHUP) == 0) | |
694 | draining = true; | |
8b412664 PZ |
695 | } |
696 | ||
774cb499 JO |
697 | /* |
698 | * When perf is starting the traced process, at the end events | |
699 | * die with the process and we wait for that. Thus no need to | |
700 | * disable events in this case. | |
701 | */ | |
602ad878 | 702 | if (done && !disabled && !target__none(&opts->target)) { |
2dd6d8a1 | 703 | auxtrace_snapshot_enabled = 0; |
3e2be2da | 704 | perf_evlist__disable(rec->evlist); |
2711926a JO |
705 | disabled = true; |
706 | } | |
de9ac07b | 707 | } |
2dd6d8a1 | 708 | auxtrace_snapshot_enabled = 0; |
de9ac07b | 709 | |
f33cbe72 | 710 | if (forks && workload_exec_errno) { |
35550da3 | 711 | char msg[STRERR_BUFSIZE]; |
f33cbe72 ACM |
712 | const char *emsg = strerror_r(workload_exec_errno, msg, sizeof(msg)); |
713 | pr_err("Workload failed: %s\n", emsg); | |
714 | err = -1; | |
45604710 | 715 | goto out_child; |
f33cbe72 ACM |
716 | } |
717 | ||
e3d59112 | 718 | if (!quiet) |
45604710 | 719 | fprintf(stderr, "[ perf record: Woken up %ld times to write data ]\n", waking); |
b44308f5 | 720 | |
45604710 NK |
721 | out_child: |
722 | if (forks) { | |
723 | int exit_status; | |
addc2785 | 724 | |
45604710 NK |
725 | if (!child_finished) |
726 | kill(rec->evlist->workload.pid, SIGTERM); | |
727 | ||
728 | wait(&exit_status); | |
729 | ||
730 | if (err < 0) | |
731 | status = err; | |
732 | else if (WIFEXITED(exit_status)) | |
733 | status = WEXITSTATUS(exit_status); | |
734 | else if (WIFSIGNALED(exit_status)) | |
735 | signr = WTERMSIG(exit_status); | |
736 | } else | |
737 | status = err; | |
738 | ||
e3d59112 NK |
739 | /* this will be recalculated during process_buildids() */ |
740 | rec->samples = 0; | |
741 | ||
45604710 NK |
742 | if (!err && !file->is_pipe) { |
743 | rec->session->header.data_size += rec->bytes_written; | |
457ae94a | 744 | file->size = lseek(perf_data_file__fd(file), 0, SEEK_CUR); |
45604710 | 745 | |
cd10b289 | 746 | if (!rec->no_buildid) { |
45604710 | 747 | process_buildids(rec); |
cd10b289 AH |
748 | /* |
749 | * We take all buildids when the file contains | |
750 | * AUX area tracing data because we do not decode the | |
751 | * trace because it would take too long. | |
752 | */ | |
753 | if (rec->opts.full_auxtrace) | |
754 | dsos__hit_all(rec->session); | |
755 | } | |
42aa276f | 756 | perf_session__write_header(rec->session, rec->evlist, fd, true); |
45604710 | 757 | } |
39d17dac | 758 | |
e3d59112 NK |
759 | if (!err && !quiet) { |
760 | char samples[128]; | |
761 | ||
ef149c25 | 762 | if (rec->samples && !rec->opts.full_auxtrace) |
e3d59112 NK |
763 | scnprintf(samples, sizeof(samples), |
764 | " (%" PRIu64 " samples)", rec->samples); | |
765 | else | |
766 | samples[0] = '\0'; | |
767 | ||
768 | fprintf(stderr, "[ perf record: Captured and wrote %.3f MB %s%s ]\n", | |
769 | perf_data_file__size(file) / 1024.0 / 1024.0, | |
770 | file->path, samples); | |
771 | } | |
772 | ||
39d17dac ACM |
773 | out_delete_session: |
774 | perf_session__delete(session); | |
45604710 | 775 | return status; |
de9ac07b | 776 | } |
0e9b20b8 | 777 | |
72a128aa | 778 | static void callchain_debug(void) |
09b0fd45 | 779 | { |
aad2b21c | 780 | static const char *str[CALLCHAIN_MAX] = { "NONE", "FP", "DWARF", "LBR" }; |
a601fdff | 781 | |
72a128aa | 782 | pr_debug("callchain: type %s\n", str[callchain_param.record_mode]); |
26d33022 | 783 | |
72a128aa | 784 | if (callchain_param.record_mode == CALLCHAIN_DWARF) |
09b0fd45 | 785 | pr_debug("callchain: stack dump size %d\n", |
72a128aa | 786 | callchain_param.dump_size); |
09b0fd45 JO |
787 | } |
788 | ||
c421e80b | 789 | int record_parse_callchain_opt(const struct option *opt, |
09b0fd45 JO |
790 | const char *arg, |
791 | int unset) | |
792 | { | |
09b0fd45 | 793 | int ret; |
c421e80b | 794 | struct record_opts *record = (struct record_opts *)opt->value; |
09b0fd45 | 795 | |
c421e80b | 796 | record->callgraph_set = true; |
72a128aa | 797 | callchain_param.enabled = !unset; |
eb853e80 | 798 | |
09b0fd45 JO |
799 | /* --no-call-graph */ |
800 | if (unset) { | |
72a128aa | 801 | callchain_param.record_mode = CALLCHAIN_NONE; |
09b0fd45 JO |
802 | pr_debug("callchain: disabled\n"); |
803 | return 0; | |
804 | } | |
805 | ||
c3a6a8c4 | 806 | ret = parse_callchain_record_opt(arg, &callchain_param); |
26d33022 | 807 | if (!ret) |
72a128aa | 808 | callchain_debug(); |
26d33022 JO |
809 | |
810 | return ret; | |
811 | } | |
812 | ||
c421e80b | 813 | int record_callchain_opt(const struct option *opt, |
09b0fd45 JO |
814 | const char *arg __maybe_unused, |
815 | int unset __maybe_unused) | |
816 | { | |
c421e80b KL |
817 | struct record_opts *record = (struct record_opts *)opt->value; |
818 | ||
819 | record->callgraph_set = true; | |
72a128aa | 820 | callchain_param.enabled = true; |
09b0fd45 | 821 | |
72a128aa NK |
822 | if (callchain_param.record_mode == CALLCHAIN_NONE) |
823 | callchain_param.record_mode = CALLCHAIN_FP; | |
eb853e80 | 824 | |
72a128aa | 825 | callchain_debug(); |
09b0fd45 JO |
826 | return 0; |
827 | } | |
828 | ||
eb853e80 JO |
829 | static int perf_record_config(const char *var, const char *value, void *cb) |
830 | { | |
eb853e80 | 831 | if (!strcmp(var, "record.call-graph")) |
5a2e5e85 | 832 | var = "call-graph.record-mode"; /* fall-through */ |
eb853e80 JO |
833 | |
834 | return perf_default_config(var, value, cb); | |
835 | } | |
836 | ||
814c8c38 PZ |
837 | struct clockid_map { |
838 | const char *name; | |
839 | int clockid; | |
840 | }; | |
841 | ||
842 | #define CLOCKID_MAP(n, c) \ | |
843 | { .name = n, .clockid = (c), } | |
844 | ||
845 | #define CLOCKID_END { .name = NULL, } | |
846 | ||
847 | ||
848 | /* | |
849 | * Add the missing ones, we need to build on many distros... | |
850 | */ | |
851 | #ifndef CLOCK_MONOTONIC_RAW | |
852 | #define CLOCK_MONOTONIC_RAW 4 | |
853 | #endif | |
854 | #ifndef CLOCK_BOOTTIME | |
855 | #define CLOCK_BOOTTIME 7 | |
856 | #endif | |
857 | #ifndef CLOCK_TAI | |
858 | #define CLOCK_TAI 11 | |
859 | #endif | |
860 | ||
861 | static const struct clockid_map clockids[] = { | |
862 | /* available for all events, NMI safe */ | |
863 | CLOCKID_MAP("monotonic", CLOCK_MONOTONIC), | |
864 | CLOCKID_MAP("monotonic_raw", CLOCK_MONOTONIC_RAW), | |
865 | ||
866 | /* available for some events */ | |
867 | CLOCKID_MAP("realtime", CLOCK_REALTIME), | |
868 | CLOCKID_MAP("boottime", CLOCK_BOOTTIME), | |
869 | CLOCKID_MAP("tai", CLOCK_TAI), | |
870 | ||
871 | /* available for the lazy */ | |
872 | CLOCKID_MAP("mono", CLOCK_MONOTONIC), | |
873 | CLOCKID_MAP("raw", CLOCK_MONOTONIC_RAW), | |
874 | CLOCKID_MAP("real", CLOCK_REALTIME), | |
875 | CLOCKID_MAP("boot", CLOCK_BOOTTIME), | |
876 | ||
877 | CLOCKID_END, | |
878 | }; | |
879 | ||
880 | static int parse_clockid(const struct option *opt, const char *str, int unset) | |
881 | { | |
882 | struct record_opts *opts = (struct record_opts *)opt->value; | |
883 | const struct clockid_map *cm; | |
884 | const char *ostr = str; | |
885 | ||
886 | if (unset) { | |
887 | opts->use_clockid = 0; | |
888 | return 0; | |
889 | } | |
890 | ||
891 | /* no arg passed */ | |
892 | if (!str) | |
893 | return 0; | |
894 | ||
895 | /* no setting it twice */ | |
896 | if (opts->use_clockid) | |
897 | return -1; | |
898 | ||
899 | opts->use_clockid = true; | |
900 | ||
901 | /* if its a number, we're done */ | |
902 | if (sscanf(str, "%d", &opts->clockid) == 1) | |
903 | return 0; | |
904 | ||
905 | /* allow a "CLOCK_" prefix to the name */ | |
906 | if (!strncasecmp(str, "CLOCK_", 6)) | |
907 | str += 6; | |
908 | ||
909 | for (cm = clockids; cm->name; cm++) { | |
910 | if (!strcasecmp(str, cm->name)) { | |
911 | opts->clockid = cm->clockid; | |
912 | return 0; | |
913 | } | |
914 | } | |
915 | ||
916 | opts->use_clockid = false; | |
917 | ui__warning("unknown clockid %s, check man page\n", ostr); | |
918 | return -1; | |
919 | } | |
920 | ||
e9db1310 AH |
921 | static int record__parse_mmap_pages(const struct option *opt, |
922 | const char *str, | |
923 | int unset __maybe_unused) | |
924 | { | |
925 | struct record_opts *opts = opt->value; | |
926 | char *s, *p; | |
927 | unsigned int mmap_pages; | |
928 | int ret; | |
929 | ||
930 | if (!str) | |
931 | return -EINVAL; | |
932 | ||
933 | s = strdup(str); | |
934 | if (!s) | |
935 | return -ENOMEM; | |
936 | ||
937 | p = strchr(s, ','); | |
938 | if (p) | |
939 | *p = '\0'; | |
940 | ||
941 | if (*s) { | |
942 | ret = __perf_evlist__parse_mmap_pages(&mmap_pages, s); | |
943 | if (ret) | |
944 | goto out_free; | |
945 | opts->mmap_pages = mmap_pages; | |
946 | } | |
947 | ||
948 | if (!p) { | |
949 | ret = 0; | |
950 | goto out_free; | |
951 | } | |
952 | ||
953 | ret = __perf_evlist__parse_mmap_pages(&mmap_pages, p + 1); | |
954 | if (ret) | |
955 | goto out_free; | |
956 | ||
957 | opts->auxtrace_mmap_pages = mmap_pages; | |
958 | ||
959 | out_free: | |
960 | free(s); | |
961 | return ret; | |
962 | } | |
963 | ||
e5b2c207 | 964 | static const char * const __record_usage[] = { |
9e096753 MG |
965 | "perf record [<options>] [<command>]", |
966 | "perf record [<options>] -- <command> [<options>]", | |
0e9b20b8 IM |
967 | NULL |
968 | }; | |
e5b2c207 | 969 | const char * const *record_usage = __record_usage; |
0e9b20b8 | 970 | |
d20deb64 | 971 | /* |
8c6f45a7 ACM |
972 | * XXX Ideally would be local to cmd_record() and passed to a record__new |
973 | * because we need to have access to it in record__exit, that is called | |
d20deb64 ACM |
974 | * after cmd_record() exits, but since record_options need to be accessible to |
975 | * builtin-script, leave it here. | |
976 | * | |
977 | * At least we don't ouch it in all the other functions here directly. | |
978 | * | |
979 | * Just say no to tons of global variables, sigh. | |
980 | */ | |
8c6f45a7 | 981 | static struct record record = { |
d20deb64 | 982 | .opts = { |
8affc2b8 | 983 | .sample_time = true, |
d20deb64 ACM |
984 | .mmap_pages = UINT_MAX, |
985 | .user_freq = UINT_MAX, | |
986 | .user_interval = ULLONG_MAX, | |
447a6013 | 987 | .freq = 4000, |
d1cb9fce NK |
988 | .target = { |
989 | .uses_mmap = true, | |
3aa5939d | 990 | .default_per_cpu = true, |
d1cb9fce | 991 | }, |
9d9cad76 | 992 | .proc_map_timeout = 500, |
d20deb64 | 993 | }, |
e3d59112 NK |
994 | .tool = { |
995 | .sample = process_sample_event, | |
996 | .fork = perf_event__process_fork, | |
cca8482c | 997 | .exit = perf_event__process_exit, |
e3d59112 NK |
998 | .comm = perf_event__process_comm, |
999 | .mmap = perf_event__process_mmap, | |
1000 | .mmap2 = perf_event__process_mmap2, | |
cca8482c | 1001 | .ordered_events = true, |
e3d59112 | 1002 | }, |
d20deb64 | 1003 | }; |
7865e817 | 1004 | |
09b0fd45 | 1005 | #define CALLCHAIN_HELP "setup and enables call-graph (stack chain/backtrace) recording: " |
61eaa3be | 1006 | |
9ff125d1 | 1007 | #ifdef HAVE_DWARF_UNWIND_SUPPORT |
aad2b21c | 1008 | const char record_callchain_help[] = CALLCHAIN_HELP "fp dwarf lbr"; |
61eaa3be | 1009 | #else |
aad2b21c | 1010 | const char record_callchain_help[] = CALLCHAIN_HELP "fp lbr"; |
61eaa3be ACM |
1011 | #endif |
1012 | ||
d20deb64 ACM |
1013 | /* |
1014 | * XXX Will stay a global variable till we fix builtin-script.c to stop messing | |
1015 | * with it and switch to use the library functions in perf_evlist that came | |
b4006796 | 1016 | * from builtin-record.c, i.e. use record_opts, |
d20deb64 ACM |
1017 | * perf_evlist__prepare_workload, etc instead of fork+exec'in 'perf record', |
1018 | * using pipes, etc. | |
1019 | */ | |
e5b2c207 | 1020 | struct option __record_options[] = { |
d20deb64 | 1021 | OPT_CALLBACK('e', "event", &record.evlist, "event", |
86847b62 | 1022 | "event selector. use 'perf list' to list available events", |
f120f9d5 | 1023 | parse_events_option), |
d20deb64 | 1024 | OPT_CALLBACK(0, "filter", &record.evlist, "filter", |
c171b552 | 1025 | "event filter", parse_filter), |
4ba1faa1 WN |
1026 | OPT_CALLBACK_NOOPT(0, "exclude-perf", &record.evlist, |
1027 | NULL, "don't record events from perf itself", | |
1028 | exclude_perf), | |
bea03405 | 1029 | OPT_STRING('p', "pid", &record.opts.target.pid, "pid", |
d6d901c2 | 1030 | "record events on existing process id"), |
bea03405 | 1031 | OPT_STRING('t', "tid", &record.opts.target.tid, "tid", |
d6d901c2 | 1032 | "record events on existing thread id"), |
d20deb64 | 1033 | OPT_INTEGER('r', "realtime", &record.realtime_prio, |
0e9b20b8 | 1034 | "collect data with this RT SCHED_FIFO priority"), |
509051ea | 1035 | OPT_BOOLEAN(0, "no-buffering", &record.opts.no_buffering, |
acac03fa | 1036 | "collect data without buffering"), |
d20deb64 | 1037 | OPT_BOOLEAN('R', "raw-samples", &record.opts.raw_samples, |
daac07b2 | 1038 | "collect raw sample records from all opened counters"), |
bea03405 | 1039 | OPT_BOOLEAN('a', "all-cpus", &record.opts.target.system_wide, |
0e9b20b8 | 1040 | "system-wide collection from all CPUs"), |
bea03405 | 1041 | OPT_STRING('C', "cpu", &record.opts.target.cpu_list, "cpu", |
c45c6ea2 | 1042 | "list of cpus to monitor"), |
d20deb64 | 1043 | OPT_U64('c', "count", &record.opts.user_interval, "event period to sample"), |
f5fc1412 | 1044 | OPT_STRING('o', "output", &record.file.path, "file", |
abaff32a | 1045 | "output file name"), |
69e7e5b0 AH |
1046 | OPT_BOOLEAN_SET('i', "no-inherit", &record.opts.no_inherit, |
1047 | &record.opts.no_inherit_set, | |
1048 | "child tasks do not inherit counters"), | |
d20deb64 | 1049 | OPT_UINTEGER('F', "freq", &record.opts.user_freq, "profile at this frequency"), |
e9db1310 AH |
1050 | OPT_CALLBACK('m', "mmap-pages", &record.opts, "pages[,pages]", |
1051 | "number of mmap data pages and AUX area tracing mmap pages", | |
1052 | record__parse_mmap_pages), | |
d20deb64 | 1053 | OPT_BOOLEAN(0, "group", &record.opts.group, |
43bece79 | 1054 | "put the counters into a counter group"), |
09b0fd45 JO |
1055 | OPT_CALLBACK_NOOPT('g', NULL, &record.opts, |
1056 | NULL, "enables call-graph recording" , | |
1057 | &record_callchain_opt), | |
1058 | OPT_CALLBACK(0, "call-graph", &record.opts, | |
1059 | "mode[,dump_size]", record_callchain_help, | |
1060 | &record_parse_callchain_opt), | |
c0555642 | 1061 | OPT_INCR('v', "verbose", &verbose, |
3da297a6 | 1062 | "be more verbose (show counter open errors, etc)"), |
b44308f5 | 1063 | OPT_BOOLEAN('q', "quiet", &quiet, "don't print any message"), |
d20deb64 | 1064 | OPT_BOOLEAN('s', "stat", &record.opts.inherit_stat, |
649c48a9 | 1065 | "per thread counts"), |
56100321 | 1066 | OPT_BOOLEAN('d', "data", &record.opts.sample_address, "Record the sample addresses"), |
3abebc55 AH |
1067 | OPT_BOOLEAN_SET('T', "timestamp", &record.opts.sample_time, |
1068 | &record.opts.sample_time_set, | |
1069 | "Record the sample timestamps"), | |
56100321 | 1070 | OPT_BOOLEAN('P', "period", &record.opts.period, "Record the sample period"), |
d20deb64 | 1071 | OPT_BOOLEAN('n', "no-samples", &record.opts.no_samples, |
649c48a9 | 1072 | "don't sample"), |
d20deb64 | 1073 | OPT_BOOLEAN('N', "no-buildid-cache", &record.no_buildid_cache, |
a1ac1d3c | 1074 | "do not update the buildid cache"), |
d20deb64 | 1075 | OPT_BOOLEAN('B', "no-buildid", &record.no_buildid, |
baa2f6ce | 1076 | "do not collect buildids in perf.data"), |
d20deb64 | 1077 | OPT_CALLBACK('G', "cgroup", &record.evlist, "name", |
023695d9 SE |
1078 | "monitor event in cgroup name only", |
1079 | parse_cgroups), | |
a6205a35 | 1080 | OPT_UINTEGER('D', "delay", &record.opts.initial_delay, |
6619a53e | 1081 | "ms to wait before starting measurement after program start"), |
bea03405 NK |
1082 | OPT_STRING('u', "uid", &record.opts.target.uid_str, "user", |
1083 | "user to profile"), | |
a5aabdac SE |
1084 | |
1085 | OPT_CALLBACK_NOOPT('b', "branch-any", &record.opts.branch_stack, | |
1086 | "branch any", "sample any taken branches", | |
1087 | parse_branch_stack), | |
1088 | ||
1089 | OPT_CALLBACK('j', "branch-filter", &record.opts.branch_stack, | |
1090 | "branch filter mask", "branch stack filter modes", | |
bdfebd84 | 1091 | parse_branch_stack), |
05484298 AK |
1092 | OPT_BOOLEAN('W', "weight", &record.opts.sample_weight, |
1093 | "sample by weight (on special events only)"), | |
475eeab9 AK |
1094 | OPT_BOOLEAN(0, "transaction", &record.opts.sample_transaction, |
1095 | "sample transaction flags (special events only)"), | |
3aa5939d AH |
1096 | OPT_BOOLEAN(0, "per-thread", &record.opts.target.per_thread, |
1097 | "use per-thread mmaps"), | |
bcc84ec6 SE |
1098 | OPT_CALLBACK_OPTARG('I', "intr-regs", &record.opts.sample_intr_regs, NULL, "any register", |
1099 | "sample selected machine registers on interrupt," | |
1100 | " use -I ? to list register names", parse_regs), | |
85c273d2 AK |
1101 | OPT_BOOLEAN(0, "running-time", &record.opts.running_time, |
1102 | "Record running/enabled time of read (:S) events"), | |
814c8c38 PZ |
1103 | OPT_CALLBACK('k', "clockid", &record.opts, |
1104 | "clockid", "clockid to use for events, see clock_gettime()", | |
1105 | parse_clockid), | |
2dd6d8a1 AH |
1106 | OPT_STRING_OPTARG('S', "snapshot", &record.opts.auxtrace_snapshot_opts, |
1107 | "opts", "AUX area tracing Snapshot Mode", ""), | |
9d9cad76 KL |
1108 | OPT_UINTEGER(0, "proc-map-timeout", &record.opts.proc_map_timeout, |
1109 | "per thread proc mmap processing timeout in ms"), | |
b757bb09 AH |
1110 | OPT_BOOLEAN(0, "switch-events", &record.opts.record_switch_events, |
1111 | "Record context switch events"), | |
0e9b20b8 IM |
1112 | OPT_END() |
1113 | }; | |
1114 | ||
e5b2c207 NK |
1115 | struct option *record_options = __record_options; |
1116 | ||
1d037ca1 | 1117 | int cmd_record(int argc, const char **argv, const char *prefix __maybe_unused) |
0e9b20b8 | 1118 | { |
ef149c25 | 1119 | int err; |
8c6f45a7 | 1120 | struct record *rec = &record; |
16ad2ffb | 1121 | char errbuf[BUFSIZ]; |
0e9b20b8 | 1122 | |
3e2be2da ACM |
1123 | rec->evlist = perf_evlist__new(); |
1124 | if (rec->evlist == NULL) | |
361c99a6 ACM |
1125 | return -ENOMEM; |
1126 | ||
eb853e80 JO |
1127 | perf_config(perf_record_config, rec); |
1128 | ||
bca647aa | 1129 | argc = parse_options(argc, argv, record_options, record_usage, |
655000e7 | 1130 | PARSE_OPT_STOP_AT_NON_OPTION); |
602ad878 | 1131 | if (!argc && target__none(&rec->opts.target)) |
bca647aa | 1132 | usage_with_options(record_usage, record_options); |
0e9b20b8 | 1133 | |
bea03405 | 1134 | if (nr_cgroups && !rec->opts.target.system_wide) { |
3780f488 NK |
1135 | ui__error("cgroup monitoring only available in" |
1136 | " system-wide mode\n"); | |
023695d9 SE |
1137 | usage_with_options(record_usage, record_options); |
1138 | } | |
b757bb09 AH |
1139 | if (rec->opts.record_switch_events && |
1140 | !perf_can_record_switch_events()) { | |
1141 | ui__error("kernel does not support recording context switch events (--switch-events option)\n"); | |
1142 | usage_with_options(record_usage, record_options); | |
1143 | } | |
023695d9 | 1144 | |
ef149c25 AH |
1145 | if (!rec->itr) { |
1146 | rec->itr = auxtrace_record__init(rec->evlist, &err); | |
1147 | if (err) | |
1148 | return err; | |
1149 | } | |
1150 | ||
2dd6d8a1 AH |
1151 | err = auxtrace_parse_snapshot_options(rec->itr, &rec->opts, |
1152 | rec->opts.auxtrace_snapshot_opts); | |
1153 | if (err) | |
1154 | return err; | |
1155 | ||
ef149c25 AH |
1156 | err = -ENOMEM; |
1157 | ||
0a7e6d1b | 1158 | symbol__init(NULL); |
baa2f6ce | 1159 | |
ec80fde7 | 1160 | if (symbol_conf.kptr_restrict) |
646aaea6 ACM |
1161 | pr_warning( |
1162 | "WARNING: Kernel address maps (/proc/{kallsyms,modules}) are restricted,\n" | |
1163 | "check /proc/sys/kernel/kptr_restrict.\n\n" | |
1164 | "Samples in kernel functions may not be resolved if a suitable vmlinux\n" | |
1165 | "file is not found in the buildid cache or in the vmlinux path.\n\n" | |
1166 | "Samples in kernel modules won't be resolved at all.\n\n" | |
1167 | "If some relocation was applied (e.g. kexec) symbols may be misresolved\n" | |
1168 | "even with a suitable vmlinux or kallsyms file.\n\n"); | |
ec80fde7 | 1169 | |
d20deb64 | 1170 | if (rec->no_buildid_cache || rec->no_buildid) |
a1ac1d3c | 1171 | disable_buildid_cache(); |
655000e7 | 1172 | |
3e2be2da ACM |
1173 | if (rec->evlist->nr_entries == 0 && |
1174 | perf_evlist__add_default(rec->evlist) < 0) { | |
69aad6f1 ACM |
1175 | pr_err("Not enough memory for event selector list\n"); |
1176 | goto out_symbol_exit; | |
bbd36e5e | 1177 | } |
0e9b20b8 | 1178 | |
69e7e5b0 AH |
1179 | if (rec->opts.target.tid && !rec->opts.no_inherit_set) |
1180 | rec->opts.no_inherit = true; | |
1181 | ||
602ad878 | 1182 | err = target__validate(&rec->opts.target); |
16ad2ffb | 1183 | if (err) { |
602ad878 | 1184 | target__strerror(&rec->opts.target, err, errbuf, BUFSIZ); |
16ad2ffb NK |
1185 | ui__warning("%s", errbuf); |
1186 | } | |
1187 | ||
602ad878 | 1188 | err = target__parse_uid(&rec->opts.target); |
16ad2ffb NK |
1189 | if (err) { |
1190 | int saved_errno = errno; | |
4bd0f2d2 | 1191 | |
602ad878 | 1192 | target__strerror(&rec->opts.target, err, errbuf, BUFSIZ); |
3780f488 | 1193 | ui__error("%s", errbuf); |
16ad2ffb NK |
1194 | |
1195 | err = -saved_errno; | |
8fa60e1f | 1196 | goto out_symbol_exit; |
16ad2ffb | 1197 | } |
0d37aa34 | 1198 | |
16ad2ffb | 1199 | err = -ENOMEM; |
3e2be2da | 1200 | if (perf_evlist__create_maps(rec->evlist, &rec->opts.target) < 0) |
dd7927f4 | 1201 | usage_with_options(record_usage, record_options); |
69aad6f1 | 1202 | |
ef149c25 AH |
1203 | err = auxtrace_record__options(rec->itr, rec->evlist, &rec->opts); |
1204 | if (err) | |
1205 | goto out_symbol_exit; | |
1206 | ||
b4006796 | 1207 | if (record_opts__config(&rec->opts)) { |
39d17dac | 1208 | err = -EINVAL; |
03ad9747 | 1209 | goto out_symbol_exit; |
7e4ff9e3 MG |
1210 | } |
1211 | ||
d20deb64 | 1212 | err = __cmd_record(&record, argc, argv); |
d65a458b | 1213 | out_symbol_exit: |
45604710 | 1214 | perf_evlist__delete(rec->evlist); |
d65a458b | 1215 | symbol__exit(); |
ef149c25 | 1216 | auxtrace_record__free(rec->itr); |
39d17dac | 1217 | return err; |
0e9b20b8 | 1218 | } |
2dd6d8a1 AH |
1219 | |
1220 | static void snapshot_sig_handler(int sig __maybe_unused) | |
1221 | { | |
1222 | if (!auxtrace_snapshot_enabled) | |
1223 | return; | |
1224 | auxtrace_snapshot_enabled = 0; | |
1225 | auxtrace_snapshot_err = auxtrace_record__snapshot_start(record.itr); | |
1226 | auxtrace_record__snapshot_started = 1; | |
1227 | } |