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: |
d988d5ee | 282 | if (perf_evsel__open(pos, pos->cpus, pos->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 | |
cca8482c AH |
524 | /* |
525 | * Normally perf_session__new would do this, but it doesn't have the | |
526 | * evlist. | |
527 | */ | |
528 | if (rec->tool.ordered_events && !perf_evlist__sample_id_all(rec->evlist)) { | |
529 | pr_warning("WARNING: No sample_id_all support, falling back to unordered processing\n"); | |
530 | rec->tool.ordered_events = false; | |
531 | } | |
532 | ||
3e2be2da | 533 | if (!rec->evlist->nr_groups) |
a8bb559b NK |
534 | perf_header__clear_feat(&session->header, HEADER_GROUP_DESC); |
535 | ||
f5fc1412 | 536 | if (file->is_pipe) { |
42aa276f | 537 | err = perf_header__write_pipe(fd); |
529870e3 | 538 | if (err < 0) |
45604710 | 539 | goto out_child; |
563aecb2 | 540 | } else { |
42aa276f | 541 | err = perf_session__write_header(session, rec->evlist, fd, false); |
d5eed904 | 542 | if (err < 0) |
45604710 | 543 | goto out_child; |
56b03f3c ACM |
544 | } |
545 | ||
d3665498 | 546 | if (!rec->no_buildid |
e20960c0 | 547 | && !perf_header__has_feat(&session->header, HEADER_BUILD_ID)) { |
d3665498 | 548 | pr_err("Couldn't generate buildids. " |
e20960c0 | 549 | "Use --no-buildid to profile anyway.\n"); |
8d3eca20 | 550 | err = -1; |
45604710 | 551 | goto out_child; |
e20960c0 RR |
552 | } |
553 | ||
34ba5122 | 554 | machine = &session->machines.host; |
743eb868 | 555 | |
f5fc1412 | 556 | if (file->is_pipe) { |
45694aa7 | 557 | err = perf_event__synthesize_attrs(tool, session, |
d20deb64 | 558 | process_synthesized_event); |
2c46dbb5 TZ |
559 | if (err < 0) { |
560 | pr_err("Couldn't synthesize attrs.\n"); | |
45604710 | 561 | goto out_child; |
2c46dbb5 | 562 | } |
cd19a035 | 563 | |
3e2be2da | 564 | if (have_tracepoints(&rec->evlist->entries)) { |
63e0c771 TZ |
565 | /* |
566 | * FIXME err <= 0 here actually means that | |
567 | * there were no tracepoints so its not really | |
568 | * an error, just that we don't need to | |
569 | * synthesize anything. We really have to | |
570 | * return this more properly and also | |
571 | * propagate errors that now are calling die() | |
572 | */ | |
42aa276f | 573 | err = perf_event__synthesize_tracing_data(tool, fd, rec->evlist, |
743eb868 | 574 | process_synthesized_event); |
63e0c771 TZ |
575 | if (err <= 0) { |
576 | pr_err("Couldn't record tracing data.\n"); | |
45604710 | 577 | goto out_child; |
63e0c771 | 578 | } |
f34b9001 | 579 | rec->bytes_written += err; |
63e0c771 | 580 | } |
2c46dbb5 TZ |
581 | } |
582 | ||
ef149c25 AH |
583 | if (rec->opts.full_auxtrace) { |
584 | err = perf_event__synthesize_auxtrace_info(rec->itr, tool, | |
585 | session, process_synthesized_event); | |
586 | if (err) | |
587 | goto out_delete_session; | |
588 | } | |
589 | ||
45694aa7 | 590 | err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event, |
0ae617be | 591 | machine); |
c1a3a4b9 ACM |
592 | if (err < 0) |
593 | pr_err("Couldn't record kernel reference relocation symbol\n" | |
594 | "Symbol resolution may be skewed if relocation was used (e.g. kexec).\n" | |
595 | "Check /proc/kallsyms permission or run as root.\n"); | |
b7cece76 | 596 | |
45694aa7 | 597 | err = perf_event__synthesize_modules(tool, process_synthesized_event, |
743eb868 | 598 | machine); |
c1a3a4b9 ACM |
599 | if (err < 0) |
600 | pr_err("Couldn't record kernel module information.\n" | |
601 | "Symbol resolution may be skewed if relocation was used (e.g. kexec).\n" | |
602 | "Check /proc/modules permission or run as root.\n"); | |
603 | ||
7e383de4 | 604 | if (perf_guest) { |
876650e6 ACM |
605 | machines__process_guests(&session->machines, |
606 | perf_event__synthesize_guest_os, tool); | |
7e383de4 | 607 | } |
7c6a1c65 | 608 | |
3e2be2da | 609 | err = __machine__synthesize_threads(machine, tool, &opts->target, rec->evlist->threads, |
9d9cad76 KL |
610 | process_synthesized_event, opts->sample_address, |
611 | opts->proc_map_timeout); | |
8d3eca20 | 612 | if (err != 0) |
45604710 | 613 | goto out_child; |
8d3eca20 | 614 | |
d20deb64 | 615 | if (rec->realtime_prio) { |
de9ac07b PZ |
616 | struct sched_param param; |
617 | ||
d20deb64 | 618 | param.sched_priority = rec->realtime_prio; |
de9ac07b | 619 | if (sched_setscheduler(0, SCHED_FIFO, ¶m)) { |
6beba7ad | 620 | pr_err("Could not set realtime priority.\n"); |
8d3eca20 | 621 | err = -1; |
45604710 | 622 | goto out_child; |
de9ac07b PZ |
623 | } |
624 | } | |
625 | ||
774cb499 JO |
626 | /* |
627 | * When perf is starting the traced process, all the events | |
628 | * (apart from group members) have enable_on_exec=1 set, | |
629 | * so don't spoil it by prematurely enabling them. | |
630 | */ | |
6619a53e | 631 | if (!target__none(&opts->target) && !opts->initial_delay) |
3e2be2da | 632 | perf_evlist__enable(rec->evlist); |
764e16a3 | 633 | |
856e9660 PZ |
634 | /* |
635 | * Let the child rip | |
636 | */ | |
735f7e0b | 637 | if (forks) |
3e2be2da | 638 | perf_evlist__start_workload(rec->evlist); |
856e9660 | 639 | |
6619a53e AK |
640 | if (opts->initial_delay) { |
641 | usleep(opts->initial_delay * 1000); | |
642 | perf_evlist__enable(rec->evlist); | |
643 | } | |
644 | ||
2dd6d8a1 | 645 | auxtrace_snapshot_enabled = 1; |
649c48a9 | 646 | for (;;) { |
d20deb64 | 647 | int hits = rec->samples; |
de9ac07b | 648 | |
8c6f45a7 | 649 | if (record__mmap_read_all(rec) < 0) { |
2dd6d8a1 | 650 | auxtrace_snapshot_enabled = 0; |
8d3eca20 | 651 | err = -1; |
45604710 | 652 | goto out_child; |
8d3eca20 | 653 | } |
de9ac07b | 654 | |
2dd6d8a1 AH |
655 | if (auxtrace_record__snapshot_started) { |
656 | auxtrace_record__snapshot_started = 0; | |
657 | if (!auxtrace_snapshot_err) | |
658 | record__read_auxtrace_snapshot(rec); | |
659 | if (auxtrace_snapshot_err) { | |
660 | pr_err("AUX area tracing snapshot failed\n"); | |
661 | err = -1; | |
662 | goto out_child; | |
663 | } | |
664 | } | |
665 | ||
d20deb64 | 666 | if (hits == rec->samples) { |
6dcf45ef | 667 | if (done || draining) |
649c48a9 | 668 | break; |
f66a889d | 669 | err = perf_evlist__poll(rec->evlist, -1); |
a515114f JO |
670 | /* |
671 | * Propagate error, only if there's any. Ignore positive | |
672 | * number of returned events and interrupt error. | |
673 | */ | |
674 | if (err > 0 || (err < 0 && errno == EINTR)) | |
45604710 | 675 | err = 0; |
8b412664 | 676 | waking++; |
6dcf45ef ACM |
677 | |
678 | if (perf_evlist__filter_pollfd(rec->evlist, POLLERR | POLLHUP) == 0) | |
679 | draining = true; | |
8b412664 PZ |
680 | } |
681 | ||
774cb499 JO |
682 | /* |
683 | * When perf is starting the traced process, at the end events | |
684 | * die with the process and we wait for that. Thus no need to | |
685 | * disable events in this case. | |
686 | */ | |
602ad878 | 687 | if (done && !disabled && !target__none(&opts->target)) { |
2dd6d8a1 | 688 | auxtrace_snapshot_enabled = 0; |
3e2be2da | 689 | perf_evlist__disable(rec->evlist); |
2711926a JO |
690 | disabled = true; |
691 | } | |
de9ac07b | 692 | } |
2dd6d8a1 | 693 | auxtrace_snapshot_enabled = 0; |
de9ac07b | 694 | |
f33cbe72 | 695 | if (forks && workload_exec_errno) { |
35550da3 | 696 | char msg[STRERR_BUFSIZE]; |
f33cbe72 ACM |
697 | const char *emsg = strerror_r(workload_exec_errno, msg, sizeof(msg)); |
698 | pr_err("Workload failed: %s\n", emsg); | |
699 | err = -1; | |
45604710 | 700 | goto out_child; |
f33cbe72 ACM |
701 | } |
702 | ||
e3d59112 | 703 | if (!quiet) |
45604710 | 704 | fprintf(stderr, "[ perf record: Woken up %ld times to write data ]\n", waking); |
b44308f5 | 705 | |
45604710 NK |
706 | out_child: |
707 | if (forks) { | |
708 | int exit_status; | |
addc2785 | 709 | |
45604710 NK |
710 | if (!child_finished) |
711 | kill(rec->evlist->workload.pid, SIGTERM); | |
712 | ||
713 | wait(&exit_status); | |
714 | ||
715 | if (err < 0) | |
716 | status = err; | |
717 | else if (WIFEXITED(exit_status)) | |
718 | status = WEXITSTATUS(exit_status); | |
719 | else if (WIFSIGNALED(exit_status)) | |
720 | signr = WTERMSIG(exit_status); | |
721 | } else | |
722 | status = err; | |
723 | ||
e3d59112 NK |
724 | /* this will be recalculated during process_buildids() */ |
725 | rec->samples = 0; | |
726 | ||
45604710 NK |
727 | if (!err && !file->is_pipe) { |
728 | rec->session->header.data_size += rec->bytes_written; | |
457ae94a | 729 | file->size = lseek(perf_data_file__fd(file), 0, SEEK_CUR); |
45604710 | 730 | |
cd10b289 | 731 | if (!rec->no_buildid) { |
45604710 | 732 | process_buildids(rec); |
cd10b289 AH |
733 | /* |
734 | * We take all buildids when the file contains | |
735 | * AUX area tracing data because we do not decode the | |
736 | * trace because it would take too long. | |
737 | */ | |
738 | if (rec->opts.full_auxtrace) | |
739 | dsos__hit_all(rec->session); | |
740 | } | |
42aa276f | 741 | perf_session__write_header(rec->session, rec->evlist, fd, true); |
45604710 | 742 | } |
39d17dac | 743 | |
e3d59112 NK |
744 | if (!err && !quiet) { |
745 | char samples[128]; | |
746 | ||
ef149c25 | 747 | if (rec->samples && !rec->opts.full_auxtrace) |
e3d59112 NK |
748 | scnprintf(samples, sizeof(samples), |
749 | " (%" PRIu64 " samples)", rec->samples); | |
750 | else | |
751 | samples[0] = '\0'; | |
752 | ||
753 | fprintf(stderr, "[ perf record: Captured and wrote %.3f MB %s%s ]\n", | |
754 | perf_data_file__size(file) / 1024.0 / 1024.0, | |
755 | file->path, samples); | |
756 | } | |
757 | ||
39d17dac ACM |
758 | out_delete_session: |
759 | perf_session__delete(session); | |
45604710 | 760 | return status; |
de9ac07b | 761 | } |
0e9b20b8 | 762 | |
72a128aa | 763 | static void callchain_debug(void) |
09b0fd45 | 764 | { |
aad2b21c | 765 | static const char *str[CALLCHAIN_MAX] = { "NONE", "FP", "DWARF", "LBR" }; |
a601fdff | 766 | |
72a128aa | 767 | pr_debug("callchain: type %s\n", str[callchain_param.record_mode]); |
26d33022 | 768 | |
72a128aa | 769 | if (callchain_param.record_mode == CALLCHAIN_DWARF) |
09b0fd45 | 770 | pr_debug("callchain: stack dump size %d\n", |
72a128aa | 771 | callchain_param.dump_size); |
09b0fd45 JO |
772 | } |
773 | ||
c421e80b | 774 | int record_parse_callchain_opt(const struct option *opt, |
09b0fd45 JO |
775 | const char *arg, |
776 | int unset) | |
777 | { | |
09b0fd45 | 778 | int ret; |
c421e80b | 779 | struct record_opts *record = (struct record_opts *)opt->value; |
09b0fd45 | 780 | |
c421e80b | 781 | record->callgraph_set = true; |
72a128aa | 782 | callchain_param.enabled = !unset; |
eb853e80 | 783 | |
09b0fd45 JO |
784 | /* --no-call-graph */ |
785 | if (unset) { | |
72a128aa | 786 | callchain_param.record_mode = CALLCHAIN_NONE; |
09b0fd45 JO |
787 | pr_debug("callchain: disabled\n"); |
788 | return 0; | |
789 | } | |
790 | ||
c3a6a8c4 | 791 | ret = parse_callchain_record_opt(arg, &callchain_param); |
26d33022 | 792 | if (!ret) |
72a128aa | 793 | callchain_debug(); |
26d33022 JO |
794 | |
795 | return ret; | |
796 | } | |
797 | ||
c421e80b | 798 | int record_callchain_opt(const struct option *opt, |
09b0fd45 JO |
799 | const char *arg __maybe_unused, |
800 | int unset __maybe_unused) | |
801 | { | |
c421e80b KL |
802 | struct record_opts *record = (struct record_opts *)opt->value; |
803 | ||
804 | record->callgraph_set = true; | |
72a128aa | 805 | callchain_param.enabled = true; |
09b0fd45 | 806 | |
72a128aa NK |
807 | if (callchain_param.record_mode == CALLCHAIN_NONE) |
808 | callchain_param.record_mode = CALLCHAIN_FP; | |
eb853e80 | 809 | |
72a128aa | 810 | callchain_debug(); |
09b0fd45 JO |
811 | return 0; |
812 | } | |
813 | ||
eb853e80 JO |
814 | static int perf_record_config(const char *var, const char *value, void *cb) |
815 | { | |
eb853e80 | 816 | if (!strcmp(var, "record.call-graph")) |
5a2e5e85 | 817 | var = "call-graph.record-mode"; /* fall-through */ |
eb853e80 JO |
818 | |
819 | return perf_default_config(var, value, cb); | |
820 | } | |
821 | ||
814c8c38 PZ |
822 | struct clockid_map { |
823 | const char *name; | |
824 | int clockid; | |
825 | }; | |
826 | ||
827 | #define CLOCKID_MAP(n, c) \ | |
828 | { .name = n, .clockid = (c), } | |
829 | ||
830 | #define CLOCKID_END { .name = NULL, } | |
831 | ||
832 | ||
833 | /* | |
834 | * Add the missing ones, we need to build on many distros... | |
835 | */ | |
836 | #ifndef CLOCK_MONOTONIC_RAW | |
837 | #define CLOCK_MONOTONIC_RAW 4 | |
838 | #endif | |
839 | #ifndef CLOCK_BOOTTIME | |
840 | #define CLOCK_BOOTTIME 7 | |
841 | #endif | |
842 | #ifndef CLOCK_TAI | |
843 | #define CLOCK_TAI 11 | |
844 | #endif | |
845 | ||
846 | static const struct clockid_map clockids[] = { | |
847 | /* available for all events, NMI safe */ | |
848 | CLOCKID_MAP("monotonic", CLOCK_MONOTONIC), | |
849 | CLOCKID_MAP("monotonic_raw", CLOCK_MONOTONIC_RAW), | |
850 | ||
851 | /* available for some events */ | |
852 | CLOCKID_MAP("realtime", CLOCK_REALTIME), | |
853 | CLOCKID_MAP("boottime", CLOCK_BOOTTIME), | |
854 | CLOCKID_MAP("tai", CLOCK_TAI), | |
855 | ||
856 | /* available for the lazy */ | |
857 | CLOCKID_MAP("mono", CLOCK_MONOTONIC), | |
858 | CLOCKID_MAP("raw", CLOCK_MONOTONIC_RAW), | |
859 | CLOCKID_MAP("real", CLOCK_REALTIME), | |
860 | CLOCKID_MAP("boot", CLOCK_BOOTTIME), | |
861 | ||
862 | CLOCKID_END, | |
863 | }; | |
864 | ||
865 | static int parse_clockid(const struct option *opt, const char *str, int unset) | |
866 | { | |
867 | struct record_opts *opts = (struct record_opts *)opt->value; | |
868 | const struct clockid_map *cm; | |
869 | const char *ostr = str; | |
870 | ||
871 | if (unset) { | |
872 | opts->use_clockid = 0; | |
873 | return 0; | |
874 | } | |
875 | ||
876 | /* no arg passed */ | |
877 | if (!str) | |
878 | return 0; | |
879 | ||
880 | /* no setting it twice */ | |
881 | if (opts->use_clockid) | |
882 | return -1; | |
883 | ||
884 | opts->use_clockid = true; | |
885 | ||
886 | /* if its a number, we're done */ | |
887 | if (sscanf(str, "%d", &opts->clockid) == 1) | |
888 | return 0; | |
889 | ||
890 | /* allow a "CLOCK_" prefix to the name */ | |
891 | if (!strncasecmp(str, "CLOCK_", 6)) | |
892 | str += 6; | |
893 | ||
894 | for (cm = clockids; cm->name; cm++) { | |
895 | if (!strcasecmp(str, cm->name)) { | |
896 | opts->clockid = cm->clockid; | |
897 | return 0; | |
898 | } | |
899 | } | |
900 | ||
901 | opts->use_clockid = false; | |
902 | ui__warning("unknown clockid %s, check man page\n", ostr); | |
903 | return -1; | |
904 | } | |
905 | ||
e9db1310 AH |
906 | static int record__parse_mmap_pages(const struct option *opt, |
907 | const char *str, | |
908 | int unset __maybe_unused) | |
909 | { | |
910 | struct record_opts *opts = opt->value; | |
911 | char *s, *p; | |
912 | unsigned int mmap_pages; | |
913 | int ret; | |
914 | ||
915 | if (!str) | |
916 | return -EINVAL; | |
917 | ||
918 | s = strdup(str); | |
919 | if (!s) | |
920 | return -ENOMEM; | |
921 | ||
922 | p = strchr(s, ','); | |
923 | if (p) | |
924 | *p = '\0'; | |
925 | ||
926 | if (*s) { | |
927 | ret = __perf_evlist__parse_mmap_pages(&mmap_pages, s); | |
928 | if (ret) | |
929 | goto out_free; | |
930 | opts->mmap_pages = mmap_pages; | |
931 | } | |
932 | ||
933 | if (!p) { | |
934 | ret = 0; | |
935 | goto out_free; | |
936 | } | |
937 | ||
938 | ret = __perf_evlist__parse_mmap_pages(&mmap_pages, p + 1); | |
939 | if (ret) | |
940 | goto out_free; | |
941 | ||
942 | opts->auxtrace_mmap_pages = mmap_pages; | |
943 | ||
944 | out_free: | |
945 | free(s); | |
946 | return ret; | |
947 | } | |
948 | ||
e5b2c207 | 949 | static const char * const __record_usage[] = { |
9e096753 MG |
950 | "perf record [<options>] [<command>]", |
951 | "perf record [<options>] -- <command> [<options>]", | |
0e9b20b8 IM |
952 | NULL |
953 | }; | |
e5b2c207 | 954 | const char * const *record_usage = __record_usage; |
0e9b20b8 | 955 | |
d20deb64 | 956 | /* |
8c6f45a7 ACM |
957 | * XXX Ideally would be local to cmd_record() and passed to a record__new |
958 | * because we need to have access to it in record__exit, that is called | |
d20deb64 ACM |
959 | * after cmd_record() exits, but since record_options need to be accessible to |
960 | * builtin-script, leave it here. | |
961 | * | |
962 | * At least we don't ouch it in all the other functions here directly. | |
963 | * | |
964 | * Just say no to tons of global variables, sigh. | |
965 | */ | |
8c6f45a7 | 966 | static struct record record = { |
d20deb64 | 967 | .opts = { |
8affc2b8 | 968 | .sample_time = true, |
d20deb64 ACM |
969 | .mmap_pages = UINT_MAX, |
970 | .user_freq = UINT_MAX, | |
971 | .user_interval = ULLONG_MAX, | |
447a6013 | 972 | .freq = 4000, |
d1cb9fce NK |
973 | .target = { |
974 | .uses_mmap = true, | |
3aa5939d | 975 | .default_per_cpu = true, |
d1cb9fce | 976 | }, |
9d9cad76 | 977 | .proc_map_timeout = 500, |
d20deb64 | 978 | }, |
e3d59112 NK |
979 | .tool = { |
980 | .sample = process_sample_event, | |
981 | .fork = perf_event__process_fork, | |
cca8482c | 982 | .exit = perf_event__process_exit, |
e3d59112 NK |
983 | .comm = perf_event__process_comm, |
984 | .mmap = perf_event__process_mmap, | |
985 | .mmap2 = perf_event__process_mmap2, | |
cca8482c | 986 | .ordered_events = true, |
e3d59112 | 987 | }, |
d20deb64 | 988 | }; |
7865e817 | 989 | |
09b0fd45 | 990 | #define CALLCHAIN_HELP "setup and enables call-graph (stack chain/backtrace) recording: " |
61eaa3be | 991 | |
9ff125d1 | 992 | #ifdef HAVE_DWARF_UNWIND_SUPPORT |
aad2b21c | 993 | const char record_callchain_help[] = CALLCHAIN_HELP "fp dwarf lbr"; |
61eaa3be | 994 | #else |
aad2b21c | 995 | const char record_callchain_help[] = CALLCHAIN_HELP "fp lbr"; |
61eaa3be ACM |
996 | #endif |
997 | ||
d20deb64 ACM |
998 | /* |
999 | * XXX Will stay a global variable till we fix builtin-script.c to stop messing | |
1000 | * with it and switch to use the library functions in perf_evlist that came | |
b4006796 | 1001 | * from builtin-record.c, i.e. use record_opts, |
d20deb64 ACM |
1002 | * perf_evlist__prepare_workload, etc instead of fork+exec'in 'perf record', |
1003 | * using pipes, etc. | |
1004 | */ | |
e5b2c207 | 1005 | struct option __record_options[] = { |
d20deb64 | 1006 | OPT_CALLBACK('e', "event", &record.evlist, "event", |
86847b62 | 1007 | "event selector. use 'perf list' to list available events", |
f120f9d5 | 1008 | parse_events_option), |
d20deb64 | 1009 | OPT_CALLBACK(0, "filter", &record.evlist, "filter", |
c171b552 | 1010 | "event filter", parse_filter), |
4ba1faa1 WN |
1011 | OPT_CALLBACK_NOOPT(0, "exclude-perf", &record.evlist, |
1012 | NULL, "don't record events from perf itself", | |
1013 | exclude_perf), | |
bea03405 | 1014 | OPT_STRING('p', "pid", &record.opts.target.pid, "pid", |
d6d901c2 | 1015 | "record events on existing process id"), |
bea03405 | 1016 | OPT_STRING('t', "tid", &record.opts.target.tid, "tid", |
d6d901c2 | 1017 | "record events on existing thread id"), |
d20deb64 | 1018 | OPT_INTEGER('r', "realtime", &record.realtime_prio, |
0e9b20b8 | 1019 | "collect data with this RT SCHED_FIFO priority"), |
509051ea | 1020 | OPT_BOOLEAN(0, "no-buffering", &record.opts.no_buffering, |
acac03fa | 1021 | "collect data without buffering"), |
d20deb64 | 1022 | OPT_BOOLEAN('R', "raw-samples", &record.opts.raw_samples, |
daac07b2 | 1023 | "collect raw sample records from all opened counters"), |
bea03405 | 1024 | OPT_BOOLEAN('a', "all-cpus", &record.opts.target.system_wide, |
0e9b20b8 | 1025 | "system-wide collection from all CPUs"), |
bea03405 | 1026 | OPT_STRING('C', "cpu", &record.opts.target.cpu_list, "cpu", |
c45c6ea2 | 1027 | "list of cpus to monitor"), |
d20deb64 | 1028 | OPT_U64('c', "count", &record.opts.user_interval, "event period to sample"), |
f5fc1412 | 1029 | OPT_STRING('o', "output", &record.file.path, "file", |
abaff32a | 1030 | "output file name"), |
69e7e5b0 AH |
1031 | OPT_BOOLEAN_SET('i', "no-inherit", &record.opts.no_inherit, |
1032 | &record.opts.no_inherit_set, | |
1033 | "child tasks do not inherit counters"), | |
d20deb64 | 1034 | OPT_UINTEGER('F', "freq", &record.opts.user_freq, "profile at this frequency"), |
e9db1310 AH |
1035 | OPT_CALLBACK('m', "mmap-pages", &record.opts, "pages[,pages]", |
1036 | "number of mmap data pages and AUX area tracing mmap pages", | |
1037 | record__parse_mmap_pages), | |
d20deb64 | 1038 | OPT_BOOLEAN(0, "group", &record.opts.group, |
43bece79 | 1039 | "put the counters into a counter group"), |
09b0fd45 JO |
1040 | OPT_CALLBACK_NOOPT('g', NULL, &record.opts, |
1041 | NULL, "enables call-graph recording" , | |
1042 | &record_callchain_opt), | |
1043 | OPT_CALLBACK(0, "call-graph", &record.opts, | |
1044 | "mode[,dump_size]", record_callchain_help, | |
1045 | &record_parse_callchain_opt), | |
c0555642 | 1046 | OPT_INCR('v', "verbose", &verbose, |
3da297a6 | 1047 | "be more verbose (show counter open errors, etc)"), |
b44308f5 | 1048 | OPT_BOOLEAN('q', "quiet", &quiet, "don't print any message"), |
d20deb64 | 1049 | OPT_BOOLEAN('s', "stat", &record.opts.inherit_stat, |
649c48a9 | 1050 | "per thread counts"), |
56100321 | 1051 | OPT_BOOLEAN('d', "data", &record.opts.sample_address, "Record the sample addresses"), |
3abebc55 AH |
1052 | OPT_BOOLEAN_SET('T', "timestamp", &record.opts.sample_time, |
1053 | &record.opts.sample_time_set, | |
1054 | "Record the sample timestamps"), | |
56100321 | 1055 | OPT_BOOLEAN('P', "period", &record.opts.period, "Record the sample period"), |
d20deb64 | 1056 | OPT_BOOLEAN('n', "no-samples", &record.opts.no_samples, |
649c48a9 | 1057 | "don't sample"), |
d20deb64 | 1058 | OPT_BOOLEAN('N', "no-buildid-cache", &record.no_buildid_cache, |
a1ac1d3c | 1059 | "do not update the buildid cache"), |
d20deb64 | 1060 | OPT_BOOLEAN('B', "no-buildid", &record.no_buildid, |
baa2f6ce | 1061 | "do not collect buildids in perf.data"), |
d20deb64 | 1062 | OPT_CALLBACK('G', "cgroup", &record.evlist, "name", |
023695d9 SE |
1063 | "monitor event in cgroup name only", |
1064 | parse_cgroups), | |
a6205a35 | 1065 | OPT_UINTEGER('D', "delay", &record.opts.initial_delay, |
6619a53e | 1066 | "ms to wait before starting measurement after program start"), |
bea03405 NK |
1067 | OPT_STRING('u', "uid", &record.opts.target.uid_str, "user", |
1068 | "user to profile"), | |
a5aabdac SE |
1069 | |
1070 | OPT_CALLBACK_NOOPT('b', "branch-any", &record.opts.branch_stack, | |
1071 | "branch any", "sample any taken branches", | |
1072 | parse_branch_stack), | |
1073 | ||
1074 | OPT_CALLBACK('j', "branch-filter", &record.opts.branch_stack, | |
1075 | "branch filter mask", "branch stack filter modes", | |
bdfebd84 | 1076 | parse_branch_stack), |
05484298 AK |
1077 | OPT_BOOLEAN('W', "weight", &record.opts.sample_weight, |
1078 | "sample by weight (on special events only)"), | |
475eeab9 AK |
1079 | OPT_BOOLEAN(0, "transaction", &record.opts.sample_transaction, |
1080 | "sample transaction flags (special events only)"), | |
3aa5939d AH |
1081 | OPT_BOOLEAN(0, "per-thread", &record.opts.target.per_thread, |
1082 | "use per-thread mmaps"), | |
4b6c5177 SE |
1083 | OPT_BOOLEAN('I', "intr-regs", &record.opts.sample_intr_regs, |
1084 | "Sample machine registers on interrupt"), | |
85c273d2 AK |
1085 | OPT_BOOLEAN(0, "running-time", &record.opts.running_time, |
1086 | "Record running/enabled time of read (:S) events"), | |
814c8c38 PZ |
1087 | OPT_CALLBACK('k', "clockid", &record.opts, |
1088 | "clockid", "clockid to use for events, see clock_gettime()", | |
1089 | parse_clockid), | |
2dd6d8a1 AH |
1090 | OPT_STRING_OPTARG('S', "snapshot", &record.opts.auxtrace_snapshot_opts, |
1091 | "opts", "AUX area tracing Snapshot Mode", ""), | |
9d9cad76 KL |
1092 | OPT_UINTEGER(0, "proc-map-timeout", &record.opts.proc_map_timeout, |
1093 | "per thread proc mmap processing timeout in ms"), | |
b757bb09 AH |
1094 | OPT_BOOLEAN(0, "switch-events", &record.opts.record_switch_events, |
1095 | "Record context switch events"), | |
0e9b20b8 IM |
1096 | OPT_END() |
1097 | }; | |
1098 | ||
e5b2c207 NK |
1099 | struct option *record_options = __record_options; |
1100 | ||
1d037ca1 | 1101 | int cmd_record(int argc, const char **argv, const char *prefix __maybe_unused) |
0e9b20b8 | 1102 | { |
ef149c25 | 1103 | int err; |
8c6f45a7 | 1104 | struct record *rec = &record; |
16ad2ffb | 1105 | char errbuf[BUFSIZ]; |
0e9b20b8 | 1106 | |
3e2be2da ACM |
1107 | rec->evlist = perf_evlist__new(); |
1108 | if (rec->evlist == NULL) | |
361c99a6 ACM |
1109 | return -ENOMEM; |
1110 | ||
eb853e80 JO |
1111 | perf_config(perf_record_config, rec); |
1112 | ||
bca647aa | 1113 | argc = parse_options(argc, argv, record_options, record_usage, |
655000e7 | 1114 | PARSE_OPT_STOP_AT_NON_OPTION); |
602ad878 | 1115 | if (!argc && target__none(&rec->opts.target)) |
bca647aa | 1116 | usage_with_options(record_usage, record_options); |
0e9b20b8 | 1117 | |
bea03405 | 1118 | if (nr_cgroups && !rec->opts.target.system_wide) { |
3780f488 NK |
1119 | ui__error("cgroup monitoring only available in" |
1120 | " system-wide mode\n"); | |
023695d9 SE |
1121 | usage_with_options(record_usage, record_options); |
1122 | } | |
b757bb09 AH |
1123 | if (rec->opts.record_switch_events && |
1124 | !perf_can_record_switch_events()) { | |
1125 | ui__error("kernel does not support recording context switch events (--switch-events option)\n"); | |
1126 | usage_with_options(record_usage, record_options); | |
1127 | } | |
023695d9 | 1128 | |
ef149c25 AH |
1129 | if (!rec->itr) { |
1130 | rec->itr = auxtrace_record__init(rec->evlist, &err); | |
1131 | if (err) | |
1132 | return err; | |
1133 | } | |
1134 | ||
2dd6d8a1 AH |
1135 | err = auxtrace_parse_snapshot_options(rec->itr, &rec->opts, |
1136 | rec->opts.auxtrace_snapshot_opts); | |
1137 | if (err) | |
1138 | return err; | |
1139 | ||
ef149c25 AH |
1140 | err = -ENOMEM; |
1141 | ||
0a7e6d1b | 1142 | symbol__init(NULL); |
baa2f6ce | 1143 | |
ec80fde7 | 1144 | if (symbol_conf.kptr_restrict) |
646aaea6 ACM |
1145 | pr_warning( |
1146 | "WARNING: Kernel address maps (/proc/{kallsyms,modules}) are restricted,\n" | |
1147 | "check /proc/sys/kernel/kptr_restrict.\n\n" | |
1148 | "Samples in kernel functions may not be resolved if a suitable vmlinux\n" | |
1149 | "file is not found in the buildid cache or in the vmlinux path.\n\n" | |
1150 | "Samples in kernel modules won't be resolved at all.\n\n" | |
1151 | "If some relocation was applied (e.g. kexec) symbols may be misresolved\n" | |
1152 | "even with a suitable vmlinux or kallsyms file.\n\n"); | |
ec80fde7 | 1153 | |
d20deb64 | 1154 | if (rec->no_buildid_cache || rec->no_buildid) |
a1ac1d3c | 1155 | disable_buildid_cache(); |
655000e7 | 1156 | |
3e2be2da ACM |
1157 | if (rec->evlist->nr_entries == 0 && |
1158 | perf_evlist__add_default(rec->evlist) < 0) { | |
69aad6f1 ACM |
1159 | pr_err("Not enough memory for event selector list\n"); |
1160 | goto out_symbol_exit; | |
bbd36e5e | 1161 | } |
0e9b20b8 | 1162 | |
69e7e5b0 AH |
1163 | if (rec->opts.target.tid && !rec->opts.no_inherit_set) |
1164 | rec->opts.no_inherit = true; | |
1165 | ||
602ad878 | 1166 | err = target__validate(&rec->opts.target); |
16ad2ffb | 1167 | if (err) { |
602ad878 | 1168 | target__strerror(&rec->opts.target, err, errbuf, BUFSIZ); |
16ad2ffb NK |
1169 | ui__warning("%s", errbuf); |
1170 | } | |
1171 | ||
602ad878 | 1172 | err = target__parse_uid(&rec->opts.target); |
16ad2ffb NK |
1173 | if (err) { |
1174 | int saved_errno = errno; | |
4bd0f2d2 | 1175 | |
602ad878 | 1176 | target__strerror(&rec->opts.target, err, errbuf, BUFSIZ); |
3780f488 | 1177 | ui__error("%s", errbuf); |
16ad2ffb NK |
1178 | |
1179 | err = -saved_errno; | |
8fa60e1f | 1180 | goto out_symbol_exit; |
16ad2ffb | 1181 | } |
0d37aa34 | 1182 | |
16ad2ffb | 1183 | err = -ENOMEM; |
3e2be2da | 1184 | if (perf_evlist__create_maps(rec->evlist, &rec->opts.target) < 0) |
dd7927f4 | 1185 | usage_with_options(record_usage, record_options); |
69aad6f1 | 1186 | |
ef149c25 AH |
1187 | err = auxtrace_record__options(rec->itr, rec->evlist, &rec->opts); |
1188 | if (err) | |
1189 | goto out_symbol_exit; | |
1190 | ||
b4006796 | 1191 | if (record_opts__config(&rec->opts)) { |
39d17dac | 1192 | err = -EINVAL; |
03ad9747 | 1193 | goto out_symbol_exit; |
7e4ff9e3 MG |
1194 | } |
1195 | ||
d20deb64 | 1196 | err = __cmd_record(&record, argc, argv); |
d65a458b | 1197 | out_symbol_exit: |
45604710 | 1198 | perf_evlist__delete(rec->evlist); |
d65a458b | 1199 | symbol__exit(); |
ef149c25 | 1200 | auxtrace_record__free(rec->itr); |
39d17dac | 1201 | return err; |
0e9b20b8 | 1202 | } |
2dd6d8a1 AH |
1203 | |
1204 | static void snapshot_sig_handler(int sig __maybe_unused) | |
1205 | { | |
1206 | if (!auxtrace_snapshot_enabled) | |
1207 | return; | |
1208 | auxtrace_snapshot_enabled = 0; | |
1209 | auxtrace_snapshot_err = auxtrace_record__snapshot_start(record.itr); | |
1210 | auxtrace_record__snapshot_started = 1; | |
1211 | } |