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" |
71dc2326 | 34 | #include "util/llvm-utils.h" |
7c6a1c65 | 35 | |
97124d5e | 36 | #include <unistd.h> |
de9ac07b | 37 | #include <sched.h> |
a41794cd | 38 | #include <sys/mman.h> |
de9ac07b | 39 | |
78da39fa | 40 | |
8c6f45a7 | 41 | struct record { |
45694aa7 | 42 | struct perf_tool tool; |
b4006796 | 43 | struct record_opts opts; |
d20deb64 | 44 | u64 bytes_written; |
f5fc1412 | 45 | struct perf_data_file file; |
ef149c25 | 46 | struct auxtrace_record *itr; |
d20deb64 ACM |
47 | struct perf_evlist *evlist; |
48 | struct perf_session *session; | |
49 | const char *progname; | |
d20deb64 | 50 | int realtime_prio; |
d20deb64 ACM |
51 | bool no_buildid; |
52 | bool no_buildid_cache; | |
9f065194 | 53 | unsigned long long samples; |
0f82ebc4 | 54 | }; |
a21ca2ca | 55 | |
8c6f45a7 | 56 | static int record__write(struct record *rec, void *bf, size_t size) |
f5970550 | 57 | { |
cf8b2e69 | 58 | if (perf_data_file__write(rec->session->file, bf, size) < 0) { |
50a9b868 JO |
59 | pr_err("failed to write perf data, error: %m\n"); |
60 | return -1; | |
f5970550 | 61 | } |
8d3eca20 | 62 | |
cf8b2e69 | 63 | rec->bytes_written += size; |
8d3eca20 | 64 | return 0; |
f5970550 PZ |
65 | } |
66 | ||
45694aa7 | 67 | static int process_synthesized_event(struct perf_tool *tool, |
d20deb64 | 68 | union perf_event *event, |
1d037ca1 IT |
69 | struct perf_sample *sample __maybe_unused, |
70 | struct machine *machine __maybe_unused) | |
234fbbf5 | 71 | { |
8c6f45a7 ACM |
72 | struct record *rec = container_of(tool, struct record, tool); |
73 | return record__write(rec, event, event->header.size); | |
234fbbf5 ACM |
74 | } |
75 | ||
e5685730 | 76 | static int record__mmap_read(struct record *rec, int idx) |
de9ac07b | 77 | { |
e5685730 | 78 | struct perf_mmap *md = &rec->evlist->mmap[idx]; |
7b8283b5 DA |
79 | u64 head = perf_mmap__read_head(md); |
80 | u64 old = md->prev; | |
918512b4 | 81 | unsigned char *data = md->base + page_size; |
de9ac07b PZ |
82 | unsigned long size; |
83 | void *buf; | |
8d3eca20 | 84 | int rc = 0; |
de9ac07b | 85 | |
dc82009a | 86 | if (old == head) |
8d3eca20 | 87 | return 0; |
dc82009a | 88 | |
d20deb64 | 89 | rec->samples++; |
de9ac07b PZ |
90 | |
91 | size = head - old; | |
92 | ||
93 | if ((old & md->mask) + size != (head & md->mask)) { | |
94 | buf = &data[old & md->mask]; | |
95 | size = md->mask + 1 - (old & md->mask); | |
96 | old += size; | |
021e9f47 | 97 | |
8c6f45a7 | 98 | if (record__write(rec, buf, size) < 0) { |
8d3eca20 DA |
99 | rc = -1; |
100 | goto out; | |
101 | } | |
de9ac07b PZ |
102 | } |
103 | ||
104 | buf = &data[old & md->mask]; | |
105 | size = head - old; | |
106 | old += size; | |
021e9f47 | 107 | |
8c6f45a7 | 108 | if (record__write(rec, buf, size) < 0) { |
8d3eca20 DA |
109 | rc = -1; |
110 | goto out; | |
111 | } | |
de9ac07b PZ |
112 | |
113 | md->prev = old; | |
e5685730 | 114 | perf_evlist__mmap_consume(rec->evlist, idx); |
8d3eca20 DA |
115 | out: |
116 | return rc; | |
de9ac07b PZ |
117 | } |
118 | ||
2dd6d8a1 AH |
119 | static volatile int done; |
120 | static volatile int signr = -1; | |
121 | static volatile int child_finished; | |
122 | static volatile int auxtrace_snapshot_enabled; | |
123 | static volatile int auxtrace_snapshot_err; | |
124 | static volatile int auxtrace_record__snapshot_started; | |
125 | ||
126 | static void sig_handler(int sig) | |
127 | { | |
128 | if (sig == SIGCHLD) | |
129 | child_finished = 1; | |
130 | else | |
131 | signr = sig; | |
132 | ||
133 | done = 1; | |
134 | } | |
135 | ||
136 | static void record__sig_exit(void) | |
137 | { | |
138 | if (signr == -1) | |
139 | return; | |
140 | ||
141 | signal(signr, SIG_DFL); | |
142 | raise(signr); | |
143 | } | |
144 | ||
e31f0d01 AH |
145 | #ifdef HAVE_AUXTRACE_SUPPORT |
146 | ||
ef149c25 AH |
147 | static int record__process_auxtrace(struct perf_tool *tool, |
148 | union perf_event *event, void *data1, | |
149 | size_t len1, void *data2, size_t len2) | |
150 | { | |
151 | struct record *rec = container_of(tool, struct record, tool); | |
99fa2984 | 152 | struct perf_data_file *file = &rec->file; |
ef149c25 AH |
153 | size_t padding; |
154 | u8 pad[8] = {0}; | |
155 | ||
99fa2984 AH |
156 | if (!perf_data_file__is_pipe(file)) { |
157 | off_t file_offset; | |
158 | int fd = perf_data_file__fd(file); | |
159 | int err; | |
160 | ||
161 | file_offset = lseek(fd, 0, SEEK_CUR); | |
162 | if (file_offset == -1) | |
163 | return -1; | |
164 | err = auxtrace_index__auxtrace_event(&rec->session->auxtrace_index, | |
165 | event, file_offset); | |
166 | if (err) | |
167 | return err; | |
168 | } | |
169 | ||
ef149c25 AH |
170 | /* event.auxtrace.size includes padding, see __auxtrace_mmap__read() */ |
171 | padding = (len1 + len2) & 7; | |
172 | if (padding) | |
173 | padding = 8 - padding; | |
174 | ||
175 | record__write(rec, event, event->header.size); | |
176 | record__write(rec, data1, len1); | |
177 | if (len2) | |
178 | record__write(rec, data2, len2); | |
179 | record__write(rec, &pad, padding); | |
180 | ||
181 | return 0; | |
182 | } | |
183 | ||
184 | static int record__auxtrace_mmap_read(struct record *rec, | |
185 | struct auxtrace_mmap *mm) | |
186 | { | |
187 | int ret; | |
188 | ||
189 | ret = auxtrace_mmap__read(mm, rec->itr, &rec->tool, | |
190 | record__process_auxtrace); | |
191 | if (ret < 0) | |
192 | return ret; | |
193 | ||
194 | if (ret) | |
195 | rec->samples++; | |
196 | ||
197 | return 0; | |
198 | } | |
199 | ||
2dd6d8a1 AH |
200 | static int record__auxtrace_mmap_read_snapshot(struct record *rec, |
201 | struct auxtrace_mmap *mm) | |
202 | { | |
203 | int ret; | |
204 | ||
205 | ret = auxtrace_mmap__read_snapshot(mm, rec->itr, &rec->tool, | |
206 | record__process_auxtrace, | |
207 | rec->opts.auxtrace_snapshot_size); | |
208 | if (ret < 0) | |
209 | return ret; | |
210 | ||
211 | if (ret) | |
212 | rec->samples++; | |
213 | ||
214 | return 0; | |
215 | } | |
216 | ||
217 | static int record__auxtrace_read_snapshot_all(struct record *rec) | |
218 | { | |
219 | int i; | |
220 | int rc = 0; | |
221 | ||
222 | for (i = 0; i < rec->evlist->nr_mmaps; i++) { | |
223 | struct auxtrace_mmap *mm = | |
224 | &rec->evlist->mmap[i].auxtrace_mmap; | |
225 | ||
226 | if (!mm->base) | |
227 | continue; | |
228 | ||
229 | if (record__auxtrace_mmap_read_snapshot(rec, mm) != 0) { | |
230 | rc = -1; | |
231 | goto out; | |
232 | } | |
233 | } | |
234 | out: | |
235 | return rc; | |
236 | } | |
237 | ||
238 | static void record__read_auxtrace_snapshot(struct record *rec) | |
239 | { | |
240 | pr_debug("Recording AUX area tracing snapshot\n"); | |
241 | if (record__auxtrace_read_snapshot_all(rec) < 0) { | |
242 | auxtrace_snapshot_err = -1; | |
243 | } else { | |
244 | auxtrace_snapshot_err = auxtrace_record__snapshot_finish(rec->itr); | |
245 | if (!auxtrace_snapshot_err) | |
246 | auxtrace_snapshot_enabled = 1; | |
247 | } | |
248 | } | |
249 | ||
e31f0d01 AH |
250 | #else |
251 | ||
252 | static inline | |
253 | int record__auxtrace_mmap_read(struct record *rec __maybe_unused, | |
254 | struct auxtrace_mmap *mm __maybe_unused) | |
255 | { | |
256 | return 0; | |
257 | } | |
258 | ||
2dd6d8a1 AH |
259 | static inline |
260 | void record__read_auxtrace_snapshot(struct record *rec __maybe_unused) | |
de9ac07b | 261 | { |
f7b7c26e PZ |
262 | } |
263 | ||
2dd6d8a1 AH |
264 | static inline |
265 | int auxtrace_record__snapshot_start(struct auxtrace_record *itr __maybe_unused) | |
f7b7c26e | 266 | { |
2dd6d8a1 | 267 | return 0; |
de9ac07b PZ |
268 | } |
269 | ||
2dd6d8a1 AH |
270 | #endif |
271 | ||
8c6f45a7 | 272 | static int record__open(struct record *rec) |
dd7927f4 | 273 | { |
56e52e85 | 274 | char msg[512]; |
6a4bb04c | 275 | struct perf_evsel *pos; |
d20deb64 ACM |
276 | struct perf_evlist *evlist = rec->evlist; |
277 | struct perf_session *session = rec->session; | |
b4006796 | 278 | struct record_opts *opts = &rec->opts; |
8d3eca20 | 279 | int rc = 0; |
dd7927f4 | 280 | |
f77a9518 | 281 | perf_evlist__config(evlist, opts); |
cac21425 | 282 | |
0050f7aa | 283 | evlist__for_each(evlist, pos) { |
dd7927f4 | 284 | try_again: |
d988d5ee | 285 | if (perf_evsel__open(pos, pos->cpus, pos->threads) < 0) { |
56e52e85 | 286 | if (perf_evsel__fallback(pos, errno, msg, sizeof(msg))) { |
d6d901c2 | 287 | if (verbose) |
c0a54341 | 288 | ui__warning("%s\n", msg); |
d6d901c2 ZY |
289 | goto try_again; |
290 | } | |
ca6a4258 | 291 | |
56e52e85 ACM |
292 | rc = -errno; |
293 | perf_evsel__open_strerror(pos, &opts->target, | |
294 | errno, msg, sizeof(msg)); | |
295 | ui__error("%s\n", msg); | |
8d3eca20 | 296 | goto out; |
c171b552 LZ |
297 | } |
298 | } | |
a43d3f08 | 299 | |
23d4aad4 ACM |
300 | if (perf_evlist__apply_filters(evlist, &pos)) { |
301 | error("failed to set filter \"%s\" on event %s with %d (%s)\n", | |
302 | pos->filter, perf_evsel__name(pos), errno, | |
35550da3 | 303 | strerror_r(errno, msg, sizeof(msg))); |
8d3eca20 DA |
304 | rc = -1; |
305 | goto out; | |
0a102479 FW |
306 | } |
307 | ||
ef149c25 | 308 | if (perf_evlist__mmap_ex(evlist, opts->mmap_pages, false, |
2dd6d8a1 AH |
309 | opts->auxtrace_mmap_pages, |
310 | opts->auxtrace_snapshot_mode) < 0) { | |
8d3eca20 DA |
311 | if (errno == EPERM) { |
312 | pr_err("Permission error mapping pages.\n" | |
313 | "Consider increasing " | |
314 | "/proc/sys/kernel/perf_event_mlock_kb,\n" | |
315 | "or try again with a smaller value of -m/--mmap_pages.\n" | |
ef149c25 AH |
316 | "(current value: %u,%u)\n", |
317 | opts->mmap_pages, opts->auxtrace_mmap_pages); | |
8d3eca20 | 318 | rc = -errno; |
8d3eca20 | 319 | } else { |
35550da3 MH |
320 | pr_err("failed to mmap with %d (%s)\n", errno, |
321 | strerror_r(errno, msg, sizeof(msg))); | |
8d3eca20 DA |
322 | rc = -errno; |
323 | } | |
324 | goto out; | |
18e60939 | 325 | } |
0a27d7f9 | 326 | |
563aecb2 | 327 | session->evlist = evlist; |
7b56cce2 | 328 | perf_session__set_id_hdr_size(session); |
8d3eca20 DA |
329 | out: |
330 | return rc; | |
16c8a109 PZ |
331 | } |
332 | ||
e3d59112 NK |
333 | static int process_sample_event(struct perf_tool *tool, |
334 | union perf_event *event, | |
335 | struct perf_sample *sample, | |
336 | struct perf_evsel *evsel, | |
337 | struct machine *machine) | |
338 | { | |
339 | struct record *rec = container_of(tool, struct record, tool); | |
340 | ||
341 | rec->samples++; | |
342 | ||
343 | return build_id__mark_dso_hit(tool, event, sample, evsel, machine); | |
344 | } | |
345 | ||
8c6f45a7 | 346 | static int process_buildids(struct record *rec) |
6122e4e4 | 347 | { |
f5fc1412 JO |
348 | struct perf_data_file *file = &rec->file; |
349 | struct perf_session *session = rec->session; | |
6122e4e4 | 350 | |
457ae94a | 351 | if (file->size == 0) |
9f591fd7 ACM |
352 | return 0; |
353 | ||
00dc8657 NK |
354 | /* |
355 | * During this process, it'll load kernel map and replace the | |
356 | * dso->long_name to a real pathname it found. In this case | |
357 | * we prefer the vmlinux path like | |
358 | * /lib/modules/3.16.4/build/vmlinux | |
359 | * | |
360 | * rather than build-id path (in debug directory). | |
361 | * $HOME/.debug/.build-id/f0/6e17aa50adf4d00b88925e03775de107611551 | |
362 | */ | |
363 | symbol_conf.ignore_vmlinux_buildid = true; | |
364 | ||
b7b61cbe | 365 | return perf_session__process_events(session); |
6122e4e4 ACM |
366 | } |
367 | ||
8115d60c | 368 | static void perf_event__synthesize_guest_os(struct machine *machine, void *data) |
a1645ce1 ZY |
369 | { |
370 | int err; | |
45694aa7 | 371 | struct perf_tool *tool = data; |
a1645ce1 ZY |
372 | /* |
373 | *As for guest kernel when processing subcommand record&report, | |
374 | *we arrange module mmap prior to guest kernel mmap and trigger | |
375 | *a preload dso because default guest module symbols are loaded | |
376 | *from guest kallsyms instead of /lib/modules/XXX/XXX. This | |
377 | *method is used to avoid symbol missing when the first addr is | |
378 | *in module instead of in guest kernel. | |
379 | */ | |
45694aa7 | 380 | err = perf_event__synthesize_modules(tool, process_synthesized_event, |
743eb868 | 381 | machine); |
a1645ce1 ZY |
382 | if (err < 0) |
383 | pr_err("Couldn't record guest kernel [%d]'s reference" | |
23346f21 | 384 | " relocation symbol.\n", machine->pid); |
a1645ce1 | 385 | |
a1645ce1 ZY |
386 | /* |
387 | * We use _stext for guest kernel because guest kernel's /proc/kallsyms | |
388 | * have no _text sometimes. | |
389 | */ | |
45694aa7 | 390 | err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event, |
0ae617be | 391 | machine); |
a1645ce1 ZY |
392 | if (err < 0) |
393 | pr_err("Couldn't record guest kernel [%d]'s reference" | |
23346f21 | 394 | " relocation symbol.\n", machine->pid); |
a1645ce1 ZY |
395 | } |
396 | ||
98402807 FW |
397 | static struct perf_event_header finished_round_event = { |
398 | .size = sizeof(struct perf_event_header), | |
399 | .type = PERF_RECORD_FINISHED_ROUND, | |
400 | }; | |
401 | ||
8c6f45a7 | 402 | static int record__mmap_read_all(struct record *rec) |
98402807 | 403 | { |
dcabb507 | 404 | u64 bytes_written = rec->bytes_written; |
0e2e63dd | 405 | int i; |
8d3eca20 | 406 | int rc = 0; |
98402807 | 407 | |
d20deb64 | 408 | for (i = 0; i < rec->evlist->nr_mmaps; i++) { |
ef149c25 AH |
409 | struct auxtrace_mmap *mm = &rec->evlist->mmap[i].auxtrace_mmap; |
410 | ||
8d3eca20 | 411 | if (rec->evlist->mmap[i].base) { |
e5685730 | 412 | if (record__mmap_read(rec, i) != 0) { |
8d3eca20 DA |
413 | rc = -1; |
414 | goto out; | |
415 | } | |
416 | } | |
ef149c25 | 417 | |
2dd6d8a1 | 418 | if (mm->base && !rec->opts.auxtrace_snapshot_mode && |
ef149c25 AH |
419 | record__auxtrace_mmap_read(rec, mm) != 0) { |
420 | rc = -1; | |
421 | goto out; | |
422 | } | |
98402807 FW |
423 | } |
424 | ||
dcabb507 JO |
425 | /* |
426 | * Mark the round finished in case we wrote | |
427 | * at least one event. | |
428 | */ | |
429 | if (bytes_written != rec->bytes_written) | |
430 | rc = record__write(rec, &finished_round_event, sizeof(finished_round_event)); | |
8d3eca20 DA |
431 | |
432 | out: | |
433 | return rc; | |
98402807 FW |
434 | } |
435 | ||
8c6f45a7 | 436 | static void record__init_features(struct record *rec) |
57706abc | 437 | { |
57706abc DA |
438 | struct perf_session *session = rec->session; |
439 | int feat; | |
440 | ||
441 | for (feat = HEADER_FIRST_FEATURE; feat < HEADER_LAST_FEATURE; feat++) | |
442 | perf_header__set_feat(&session->header, feat); | |
443 | ||
444 | if (rec->no_buildid) | |
445 | perf_header__clear_feat(&session->header, HEADER_BUILD_ID); | |
446 | ||
3e2be2da | 447 | if (!have_tracepoints(&rec->evlist->entries)) |
57706abc DA |
448 | perf_header__clear_feat(&session->header, HEADER_TRACING_DATA); |
449 | ||
450 | if (!rec->opts.branch_stack) | |
451 | perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK); | |
ef149c25 AH |
452 | |
453 | if (!rec->opts.full_auxtrace) | |
454 | perf_header__clear_feat(&session->header, HEADER_AUXTRACE); | |
57706abc DA |
455 | } |
456 | ||
f33cbe72 ACM |
457 | static volatile int workload_exec_errno; |
458 | ||
459 | /* | |
460 | * perf_evlist__prepare_workload will send a SIGUSR1 | |
461 | * if the fork fails, since we asked by setting its | |
462 | * want_signal to true. | |
463 | */ | |
45604710 NK |
464 | static void workload_exec_failed_signal(int signo __maybe_unused, |
465 | siginfo_t *info, | |
f33cbe72 ACM |
466 | void *ucontext __maybe_unused) |
467 | { | |
468 | workload_exec_errno = info->si_value.sival_int; | |
469 | done = 1; | |
f33cbe72 ACM |
470 | child_finished = 1; |
471 | } | |
472 | ||
2dd6d8a1 AH |
473 | static void snapshot_sig_handler(int sig); |
474 | ||
8c6f45a7 | 475 | static int __cmd_record(struct record *rec, int argc, const char **argv) |
16c8a109 | 476 | { |
57706abc | 477 | int err; |
45604710 | 478 | int status = 0; |
8b412664 | 479 | unsigned long waking = 0; |
46be604b | 480 | const bool forks = argc > 0; |
23346f21 | 481 | struct machine *machine; |
45694aa7 | 482 | struct perf_tool *tool = &rec->tool; |
b4006796 | 483 | struct record_opts *opts = &rec->opts; |
f5fc1412 | 484 | struct perf_data_file *file = &rec->file; |
d20deb64 | 485 | struct perf_session *session; |
6dcf45ef | 486 | bool disabled = false, draining = false; |
42aa276f | 487 | int fd; |
de9ac07b | 488 | |
d20deb64 | 489 | rec->progname = argv[0]; |
33e49ea7 | 490 | |
45604710 | 491 | atexit(record__sig_exit); |
f5970550 PZ |
492 | signal(SIGCHLD, sig_handler); |
493 | signal(SIGINT, sig_handler); | |
804f7ac7 | 494 | signal(SIGTERM, sig_handler); |
2dd6d8a1 AH |
495 | if (rec->opts.auxtrace_snapshot_mode) |
496 | signal(SIGUSR2, snapshot_sig_handler); | |
497 | else | |
498 | signal(SIGUSR2, SIG_IGN); | |
f5970550 | 499 | |
b7b61cbe | 500 | session = perf_session__new(file, false, tool); |
94c744b6 | 501 | if (session == NULL) { |
ffa91880 | 502 | pr_err("Perf session creation failed.\n"); |
a9a70bbc ACM |
503 | return -1; |
504 | } | |
505 | ||
42aa276f | 506 | fd = perf_data_file__fd(file); |
d20deb64 ACM |
507 | rec->session = session; |
508 | ||
8c6f45a7 | 509 | record__init_features(rec); |
330aa675 | 510 | |
d4db3f16 | 511 | if (forks) { |
3e2be2da | 512 | err = perf_evlist__prepare_workload(rec->evlist, &opts->target, |
f5fc1412 | 513 | argv, file->is_pipe, |
735f7e0b | 514 | workload_exec_failed_signal); |
35b9d88e ACM |
515 | if (err < 0) { |
516 | pr_err("Couldn't run the workload!\n"); | |
45604710 | 517 | status = err; |
35b9d88e | 518 | goto out_delete_session; |
856e9660 | 519 | } |
856e9660 PZ |
520 | } |
521 | ||
8c6f45a7 | 522 | if (record__open(rec) != 0) { |
8d3eca20 | 523 | err = -1; |
45604710 | 524 | goto out_child; |
8d3eca20 | 525 | } |
de9ac07b | 526 | |
cca8482c AH |
527 | /* |
528 | * Normally perf_session__new would do this, but it doesn't have the | |
529 | * evlist. | |
530 | */ | |
531 | if (rec->tool.ordered_events && !perf_evlist__sample_id_all(rec->evlist)) { | |
532 | pr_warning("WARNING: No sample_id_all support, falling back to unordered processing\n"); | |
533 | rec->tool.ordered_events = false; | |
534 | } | |
535 | ||
3e2be2da | 536 | if (!rec->evlist->nr_groups) |
a8bb559b NK |
537 | perf_header__clear_feat(&session->header, HEADER_GROUP_DESC); |
538 | ||
f5fc1412 | 539 | if (file->is_pipe) { |
42aa276f | 540 | err = perf_header__write_pipe(fd); |
529870e3 | 541 | if (err < 0) |
45604710 | 542 | goto out_child; |
563aecb2 | 543 | } else { |
42aa276f | 544 | err = perf_session__write_header(session, rec->evlist, fd, false); |
d5eed904 | 545 | if (err < 0) |
45604710 | 546 | goto out_child; |
56b03f3c ACM |
547 | } |
548 | ||
d3665498 | 549 | if (!rec->no_buildid |
e20960c0 | 550 | && !perf_header__has_feat(&session->header, HEADER_BUILD_ID)) { |
d3665498 | 551 | pr_err("Couldn't generate buildids. " |
e20960c0 | 552 | "Use --no-buildid to profile anyway.\n"); |
8d3eca20 | 553 | err = -1; |
45604710 | 554 | goto out_child; |
e20960c0 RR |
555 | } |
556 | ||
34ba5122 | 557 | machine = &session->machines.host; |
743eb868 | 558 | |
f5fc1412 | 559 | if (file->is_pipe) { |
45694aa7 | 560 | err = perf_event__synthesize_attrs(tool, session, |
d20deb64 | 561 | process_synthesized_event); |
2c46dbb5 TZ |
562 | if (err < 0) { |
563 | pr_err("Couldn't synthesize attrs.\n"); | |
45604710 | 564 | goto out_child; |
2c46dbb5 | 565 | } |
cd19a035 | 566 | |
3e2be2da | 567 | if (have_tracepoints(&rec->evlist->entries)) { |
63e0c771 TZ |
568 | /* |
569 | * FIXME err <= 0 here actually means that | |
570 | * there were no tracepoints so its not really | |
571 | * an error, just that we don't need to | |
572 | * synthesize anything. We really have to | |
573 | * return this more properly and also | |
574 | * propagate errors that now are calling die() | |
575 | */ | |
42aa276f | 576 | err = perf_event__synthesize_tracing_data(tool, fd, rec->evlist, |
743eb868 | 577 | process_synthesized_event); |
63e0c771 TZ |
578 | if (err <= 0) { |
579 | pr_err("Couldn't record tracing data.\n"); | |
45604710 | 580 | goto out_child; |
63e0c771 | 581 | } |
f34b9001 | 582 | rec->bytes_written += err; |
63e0c771 | 583 | } |
2c46dbb5 TZ |
584 | } |
585 | ||
ef149c25 AH |
586 | if (rec->opts.full_auxtrace) { |
587 | err = perf_event__synthesize_auxtrace_info(rec->itr, tool, | |
588 | session, process_synthesized_event); | |
589 | if (err) | |
590 | goto out_delete_session; | |
591 | } | |
592 | ||
45694aa7 | 593 | err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event, |
0ae617be | 594 | machine); |
c1a3a4b9 ACM |
595 | if (err < 0) |
596 | pr_err("Couldn't record kernel reference relocation symbol\n" | |
597 | "Symbol resolution may be skewed if relocation was used (e.g. kexec).\n" | |
598 | "Check /proc/kallsyms permission or run as root.\n"); | |
b7cece76 | 599 | |
45694aa7 | 600 | err = perf_event__synthesize_modules(tool, process_synthesized_event, |
743eb868 | 601 | machine); |
c1a3a4b9 ACM |
602 | if (err < 0) |
603 | pr_err("Couldn't record kernel module information.\n" | |
604 | "Symbol resolution may be skewed if relocation was used (e.g. kexec).\n" | |
605 | "Check /proc/modules permission or run as root.\n"); | |
606 | ||
7e383de4 | 607 | if (perf_guest) { |
876650e6 ACM |
608 | machines__process_guests(&session->machines, |
609 | perf_event__synthesize_guest_os, tool); | |
7e383de4 | 610 | } |
7c6a1c65 | 611 | |
3e2be2da | 612 | err = __machine__synthesize_threads(machine, tool, &opts->target, rec->evlist->threads, |
9d9cad76 KL |
613 | process_synthesized_event, opts->sample_address, |
614 | opts->proc_map_timeout); | |
8d3eca20 | 615 | if (err != 0) |
45604710 | 616 | goto out_child; |
8d3eca20 | 617 | |
d20deb64 | 618 | if (rec->realtime_prio) { |
de9ac07b PZ |
619 | struct sched_param param; |
620 | ||
d20deb64 | 621 | param.sched_priority = rec->realtime_prio; |
de9ac07b | 622 | if (sched_setscheduler(0, SCHED_FIFO, ¶m)) { |
6beba7ad | 623 | pr_err("Could not set realtime priority.\n"); |
8d3eca20 | 624 | err = -1; |
45604710 | 625 | goto out_child; |
de9ac07b PZ |
626 | } |
627 | } | |
628 | ||
774cb499 JO |
629 | /* |
630 | * When perf is starting the traced process, all the events | |
631 | * (apart from group members) have enable_on_exec=1 set, | |
632 | * so don't spoil it by prematurely enabling them. | |
633 | */ | |
6619a53e | 634 | if (!target__none(&opts->target) && !opts->initial_delay) |
3e2be2da | 635 | perf_evlist__enable(rec->evlist); |
764e16a3 | 636 | |
856e9660 PZ |
637 | /* |
638 | * Let the child rip | |
639 | */ | |
e803cf97 | 640 | if (forks) { |
e5bed564 NK |
641 | union perf_event *event; |
642 | ||
643 | event = malloc(sizeof(event->comm) + machine->id_hdr_size); | |
644 | if (event == NULL) { | |
645 | err = -ENOMEM; | |
646 | goto out_child; | |
647 | } | |
648 | ||
e803cf97 NK |
649 | /* |
650 | * Some H/W events are generated before COMM event | |
651 | * which is emitted during exec(), so perf script | |
652 | * cannot see a correct process name for those events. | |
653 | * Synthesize COMM event to prevent it. | |
654 | */ | |
e5bed564 | 655 | perf_event__synthesize_comm(tool, event, |
e803cf97 NK |
656 | rec->evlist->workload.pid, |
657 | process_synthesized_event, | |
658 | machine); | |
e5bed564 | 659 | free(event); |
e803cf97 | 660 | |
3e2be2da | 661 | perf_evlist__start_workload(rec->evlist); |
e803cf97 | 662 | } |
856e9660 | 663 | |
6619a53e AK |
664 | if (opts->initial_delay) { |
665 | usleep(opts->initial_delay * 1000); | |
666 | perf_evlist__enable(rec->evlist); | |
667 | } | |
668 | ||
2dd6d8a1 | 669 | auxtrace_snapshot_enabled = 1; |
649c48a9 | 670 | for (;;) { |
9f065194 | 671 | unsigned long long hits = rec->samples; |
de9ac07b | 672 | |
8c6f45a7 | 673 | if (record__mmap_read_all(rec) < 0) { |
2dd6d8a1 | 674 | auxtrace_snapshot_enabled = 0; |
8d3eca20 | 675 | err = -1; |
45604710 | 676 | goto out_child; |
8d3eca20 | 677 | } |
de9ac07b | 678 | |
2dd6d8a1 AH |
679 | if (auxtrace_record__snapshot_started) { |
680 | auxtrace_record__snapshot_started = 0; | |
681 | if (!auxtrace_snapshot_err) | |
682 | record__read_auxtrace_snapshot(rec); | |
683 | if (auxtrace_snapshot_err) { | |
684 | pr_err("AUX area tracing snapshot failed\n"); | |
685 | err = -1; | |
686 | goto out_child; | |
687 | } | |
688 | } | |
689 | ||
d20deb64 | 690 | if (hits == rec->samples) { |
6dcf45ef | 691 | if (done || draining) |
649c48a9 | 692 | break; |
f66a889d | 693 | err = perf_evlist__poll(rec->evlist, -1); |
a515114f JO |
694 | /* |
695 | * Propagate error, only if there's any. Ignore positive | |
696 | * number of returned events and interrupt error. | |
697 | */ | |
698 | if (err > 0 || (err < 0 && errno == EINTR)) | |
45604710 | 699 | err = 0; |
8b412664 | 700 | waking++; |
6dcf45ef ACM |
701 | |
702 | if (perf_evlist__filter_pollfd(rec->evlist, POLLERR | POLLHUP) == 0) | |
703 | draining = true; | |
8b412664 PZ |
704 | } |
705 | ||
774cb499 JO |
706 | /* |
707 | * When perf is starting the traced process, at the end events | |
708 | * die with the process and we wait for that. Thus no need to | |
709 | * disable events in this case. | |
710 | */ | |
602ad878 | 711 | if (done && !disabled && !target__none(&opts->target)) { |
2dd6d8a1 | 712 | auxtrace_snapshot_enabled = 0; |
3e2be2da | 713 | perf_evlist__disable(rec->evlist); |
2711926a JO |
714 | disabled = true; |
715 | } | |
de9ac07b | 716 | } |
2dd6d8a1 | 717 | auxtrace_snapshot_enabled = 0; |
de9ac07b | 718 | |
f33cbe72 | 719 | if (forks && workload_exec_errno) { |
35550da3 | 720 | char msg[STRERR_BUFSIZE]; |
f33cbe72 ACM |
721 | const char *emsg = strerror_r(workload_exec_errno, msg, sizeof(msg)); |
722 | pr_err("Workload failed: %s\n", emsg); | |
723 | err = -1; | |
45604710 | 724 | goto out_child; |
f33cbe72 ACM |
725 | } |
726 | ||
e3d59112 | 727 | if (!quiet) |
45604710 | 728 | fprintf(stderr, "[ perf record: Woken up %ld times to write data ]\n", waking); |
b44308f5 | 729 | |
45604710 NK |
730 | out_child: |
731 | if (forks) { | |
732 | int exit_status; | |
addc2785 | 733 | |
45604710 NK |
734 | if (!child_finished) |
735 | kill(rec->evlist->workload.pid, SIGTERM); | |
736 | ||
737 | wait(&exit_status); | |
738 | ||
739 | if (err < 0) | |
740 | status = err; | |
741 | else if (WIFEXITED(exit_status)) | |
742 | status = WEXITSTATUS(exit_status); | |
743 | else if (WIFSIGNALED(exit_status)) | |
744 | signr = WTERMSIG(exit_status); | |
745 | } else | |
746 | status = err; | |
747 | ||
e3d59112 NK |
748 | /* this will be recalculated during process_buildids() */ |
749 | rec->samples = 0; | |
750 | ||
45604710 NK |
751 | if (!err && !file->is_pipe) { |
752 | rec->session->header.data_size += rec->bytes_written; | |
457ae94a | 753 | file->size = lseek(perf_data_file__fd(file), 0, SEEK_CUR); |
45604710 | 754 | |
cd10b289 | 755 | if (!rec->no_buildid) { |
45604710 | 756 | process_buildids(rec); |
cd10b289 AH |
757 | /* |
758 | * We take all buildids when the file contains | |
759 | * AUX area tracing data because we do not decode the | |
760 | * trace because it would take too long. | |
761 | */ | |
762 | if (rec->opts.full_auxtrace) | |
763 | dsos__hit_all(rec->session); | |
764 | } | |
42aa276f | 765 | perf_session__write_header(rec->session, rec->evlist, fd, true); |
45604710 | 766 | } |
39d17dac | 767 | |
e3d59112 NK |
768 | if (!err && !quiet) { |
769 | char samples[128]; | |
770 | ||
ef149c25 | 771 | if (rec->samples && !rec->opts.full_auxtrace) |
e3d59112 NK |
772 | scnprintf(samples, sizeof(samples), |
773 | " (%" PRIu64 " samples)", rec->samples); | |
774 | else | |
775 | samples[0] = '\0'; | |
776 | ||
777 | fprintf(stderr, "[ perf record: Captured and wrote %.3f MB %s%s ]\n", | |
778 | perf_data_file__size(file) / 1024.0 / 1024.0, | |
779 | file->path, samples); | |
780 | } | |
781 | ||
39d17dac ACM |
782 | out_delete_session: |
783 | perf_session__delete(session); | |
45604710 | 784 | return status; |
de9ac07b | 785 | } |
0e9b20b8 | 786 | |
72a128aa | 787 | static void callchain_debug(void) |
09b0fd45 | 788 | { |
aad2b21c | 789 | static const char *str[CALLCHAIN_MAX] = { "NONE", "FP", "DWARF", "LBR" }; |
a601fdff | 790 | |
72a128aa | 791 | pr_debug("callchain: type %s\n", str[callchain_param.record_mode]); |
26d33022 | 792 | |
72a128aa | 793 | if (callchain_param.record_mode == CALLCHAIN_DWARF) |
09b0fd45 | 794 | pr_debug("callchain: stack dump size %d\n", |
72a128aa | 795 | callchain_param.dump_size); |
09b0fd45 JO |
796 | } |
797 | ||
c421e80b | 798 | int record_parse_callchain_opt(const struct option *opt, |
09b0fd45 JO |
799 | const char *arg, |
800 | int unset) | |
801 | { | |
09b0fd45 | 802 | int ret; |
c421e80b | 803 | struct record_opts *record = (struct record_opts *)opt->value; |
09b0fd45 | 804 | |
c421e80b | 805 | record->callgraph_set = true; |
72a128aa | 806 | callchain_param.enabled = !unset; |
eb853e80 | 807 | |
09b0fd45 JO |
808 | /* --no-call-graph */ |
809 | if (unset) { | |
72a128aa | 810 | callchain_param.record_mode = CALLCHAIN_NONE; |
09b0fd45 JO |
811 | pr_debug("callchain: disabled\n"); |
812 | return 0; | |
813 | } | |
814 | ||
c3a6a8c4 | 815 | ret = parse_callchain_record_opt(arg, &callchain_param); |
26d33022 | 816 | if (!ret) |
72a128aa | 817 | callchain_debug(); |
26d33022 JO |
818 | |
819 | return ret; | |
820 | } | |
821 | ||
c421e80b | 822 | int record_callchain_opt(const struct option *opt, |
09b0fd45 JO |
823 | const char *arg __maybe_unused, |
824 | int unset __maybe_unused) | |
825 | { | |
c421e80b KL |
826 | struct record_opts *record = (struct record_opts *)opt->value; |
827 | ||
828 | record->callgraph_set = true; | |
72a128aa | 829 | callchain_param.enabled = true; |
09b0fd45 | 830 | |
72a128aa NK |
831 | if (callchain_param.record_mode == CALLCHAIN_NONE) |
832 | callchain_param.record_mode = CALLCHAIN_FP; | |
eb853e80 | 833 | |
72a128aa | 834 | callchain_debug(); |
09b0fd45 JO |
835 | return 0; |
836 | } | |
837 | ||
eb853e80 JO |
838 | static int perf_record_config(const char *var, const char *value, void *cb) |
839 | { | |
7a29c087 NK |
840 | struct record *rec = cb; |
841 | ||
842 | if (!strcmp(var, "record.build-id")) { | |
843 | if (!strcmp(value, "cache")) | |
844 | rec->no_buildid_cache = false; | |
845 | else if (!strcmp(value, "no-cache")) | |
846 | rec->no_buildid_cache = true; | |
847 | else if (!strcmp(value, "skip")) | |
848 | rec->no_buildid = true; | |
849 | else | |
850 | return -1; | |
851 | return 0; | |
852 | } | |
eb853e80 | 853 | if (!strcmp(var, "record.call-graph")) |
5a2e5e85 | 854 | var = "call-graph.record-mode"; /* fall-through */ |
eb853e80 JO |
855 | |
856 | return perf_default_config(var, value, cb); | |
857 | } | |
858 | ||
814c8c38 PZ |
859 | struct clockid_map { |
860 | const char *name; | |
861 | int clockid; | |
862 | }; | |
863 | ||
864 | #define CLOCKID_MAP(n, c) \ | |
865 | { .name = n, .clockid = (c), } | |
866 | ||
867 | #define CLOCKID_END { .name = NULL, } | |
868 | ||
869 | ||
870 | /* | |
871 | * Add the missing ones, we need to build on many distros... | |
872 | */ | |
873 | #ifndef CLOCK_MONOTONIC_RAW | |
874 | #define CLOCK_MONOTONIC_RAW 4 | |
875 | #endif | |
876 | #ifndef CLOCK_BOOTTIME | |
877 | #define CLOCK_BOOTTIME 7 | |
878 | #endif | |
879 | #ifndef CLOCK_TAI | |
880 | #define CLOCK_TAI 11 | |
881 | #endif | |
882 | ||
883 | static const struct clockid_map clockids[] = { | |
884 | /* available for all events, NMI safe */ | |
885 | CLOCKID_MAP("monotonic", CLOCK_MONOTONIC), | |
886 | CLOCKID_MAP("monotonic_raw", CLOCK_MONOTONIC_RAW), | |
887 | ||
888 | /* available for some events */ | |
889 | CLOCKID_MAP("realtime", CLOCK_REALTIME), | |
890 | CLOCKID_MAP("boottime", CLOCK_BOOTTIME), | |
891 | CLOCKID_MAP("tai", CLOCK_TAI), | |
892 | ||
893 | /* available for the lazy */ | |
894 | CLOCKID_MAP("mono", CLOCK_MONOTONIC), | |
895 | CLOCKID_MAP("raw", CLOCK_MONOTONIC_RAW), | |
896 | CLOCKID_MAP("real", CLOCK_REALTIME), | |
897 | CLOCKID_MAP("boot", CLOCK_BOOTTIME), | |
898 | ||
899 | CLOCKID_END, | |
900 | }; | |
901 | ||
902 | static int parse_clockid(const struct option *opt, const char *str, int unset) | |
903 | { | |
904 | struct record_opts *opts = (struct record_opts *)opt->value; | |
905 | const struct clockid_map *cm; | |
906 | const char *ostr = str; | |
907 | ||
908 | if (unset) { | |
909 | opts->use_clockid = 0; | |
910 | return 0; | |
911 | } | |
912 | ||
913 | /* no arg passed */ | |
914 | if (!str) | |
915 | return 0; | |
916 | ||
917 | /* no setting it twice */ | |
918 | if (opts->use_clockid) | |
919 | return -1; | |
920 | ||
921 | opts->use_clockid = true; | |
922 | ||
923 | /* if its a number, we're done */ | |
924 | if (sscanf(str, "%d", &opts->clockid) == 1) | |
925 | return 0; | |
926 | ||
927 | /* allow a "CLOCK_" prefix to the name */ | |
928 | if (!strncasecmp(str, "CLOCK_", 6)) | |
929 | str += 6; | |
930 | ||
931 | for (cm = clockids; cm->name; cm++) { | |
932 | if (!strcasecmp(str, cm->name)) { | |
933 | opts->clockid = cm->clockid; | |
934 | return 0; | |
935 | } | |
936 | } | |
937 | ||
938 | opts->use_clockid = false; | |
939 | ui__warning("unknown clockid %s, check man page\n", ostr); | |
940 | return -1; | |
941 | } | |
942 | ||
e9db1310 AH |
943 | static int record__parse_mmap_pages(const struct option *opt, |
944 | const char *str, | |
945 | int unset __maybe_unused) | |
946 | { | |
947 | struct record_opts *opts = opt->value; | |
948 | char *s, *p; | |
949 | unsigned int mmap_pages; | |
950 | int ret; | |
951 | ||
952 | if (!str) | |
953 | return -EINVAL; | |
954 | ||
955 | s = strdup(str); | |
956 | if (!s) | |
957 | return -ENOMEM; | |
958 | ||
959 | p = strchr(s, ','); | |
960 | if (p) | |
961 | *p = '\0'; | |
962 | ||
963 | if (*s) { | |
964 | ret = __perf_evlist__parse_mmap_pages(&mmap_pages, s); | |
965 | if (ret) | |
966 | goto out_free; | |
967 | opts->mmap_pages = mmap_pages; | |
968 | } | |
969 | ||
970 | if (!p) { | |
971 | ret = 0; | |
972 | goto out_free; | |
973 | } | |
974 | ||
975 | ret = __perf_evlist__parse_mmap_pages(&mmap_pages, p + 1); | |
976 | if (ret) | |
977 | goto out_free; | |
978 | ||
979 | opts->auxtrace_mmap_pages = mmap_pages; | |
980 | ||
981 | out_free: | |
982 | free(s); | |
983 | return ret; | |
984 | } | |
985 | ||
e5b2c207 | 986 | static const char * const __record_usage[] = { |
9e096753 MG |
987 | "perf record [<options>] [<command>]", |
988 | "perf record [<options>] -- <command> [<options>]", | |
0e9b20b8 IM |
989 | NULL |
990 | }; | |
e5b2c207 | 991 | const char * const *record_usage = __record_usage; |
0e9b20b8 | 992 | |
d20deb64 | 993 | /* |
8c6f45a7 ACM |
994 | * XXX Ideally would be local to cmd_record() and passed to a record__new |
995 | * because we need to have access to it in record__exit, that is called | |
d20deb64 ACM |
996 | * after cmd_record() exits, but since record_options need to be accessible to |
997 | * builtin-script, leave it here. | |
998 | * | |
999 | * At least we don't ouch it in all the other functions here directly. | |
1000 | * | |
1001 | * Just say no to tons of global variables, sigh. | |
1002 | */ | |
8c6f45a7 | 1003 | static struct record record = { |
d20deb64 | 1004 | .opts = { |
8affc2b8 | 1005 | .sample_time = true, |
d20deb64 ACM |
1006 | .mmap_pages = UINT_MAX, |
1007 | .user_freq = UINT_MAX, | |
1008 | .user_interval = ULLONG_MAX, | |
447a6013 | 1009 | .freq = 4000, |
d1cb9fce NK |
1010 | .target = { |
1011 | .uses_mmap = true, | |
3aa5939d | 1012 | .default_per_cpu = true, |
d1cb9fce | 1013 | }, |
9d9cad76 | 1014 | .proc_map_timeout = 500, |
d20deb64 | 1015 | }, |
e3d59112 NK |
1016 | .tool = { |
1017 | .sample = process_sample_event, | |
1018 | .fork = perf_event__process_fork, | |
cca8482c | 1019 | .exit = perf_event__process_exit, |
e3d59112 NK |
1020 | .comm = perf_event__process_comm, |
1021 | .mmap = perf_event__process_mmap, | |
1022 | .mmap2 = perf_event__process_mmap2, | |
cca8482c | 1023 | .ordered_events = true, |
e3d59112 | 1024 | }, |
d20deb64 | 1025 | }; |
7865e817 | 1026 | |
76a26549 NK |
1027 | const char record_callchain_help[] = CALLCHAIN_RECORD_HELP |
1028 | "\n\t\t\t\tDefault: fp"; | |
61eaa3be | 1029 | |
d20deb64 ACM |
1030 | /* |
1031 | * XXX Will stay a global variable till we fix builtin-script.c to stop messing | |
1032 | * with it and switch to use the library functions in perf_evlist that came | |
b4006796 | 1033 | * from builtin-record.c, i.e. use record_opts, |
d20deb64 ACM |
1034 | * perf_evlist__prepare_workload, etc instead of fork+exec'in 'perf record', |
1035 | * using pipes, etc. | |
1036 | */ | |
e5b2c207 | 1037 | struct option __record_options[] = { |
d20deb64 | 1038 | OPT_CALLBACK('e', "event", &record.evlist, "event", |
86847b62 | 1039 | "event selector. use 'perf list' to list available events", |
f120f9d5 | 1040 | parse_events_option), |
d20deb64 | 1041 | OPT_CALLBACK(0, "filter", &record.evlist, "filter", |
c171b552 | 1042 | "event filter", parse_filter), |
4ba1faa1 WN |
1043 | OPT_CALLBACK_NOOPT(0, "exclude-perf", &record.evlist, |
1044 | NULL, "don't record events from perf itself", | |
1045 | exclude_perf), | |
bea03405 | 1046 | OPT_STRING('p', "pid", &record.opts.target.pid, "pid", |
d6d901c2 | 1047 | "record events on existing process id"), |
bea03405 | 1048 | OPT_STRING('t', "tid", &record.opts.target.tid, "tid", |
d6d901c2 | 1049 | "record events on existing thread id"), |
d20deb64 | 1050 | OPT_INTEGER('r', "realtime", &record.realtime_prio, |
0e9b20b8 | 1051 | "collect data with this RT SCHED_FIFO priority"), |
509051ea | 1052 | OPT_BOOLEAN(0, "no-buffering", &record.opts.no_buffering, |
acac03fa | 1053 | "collect data without buffering"), |
d20deb64 | 1054 | OPT_BOOLEAN('R', "raw-samples", &record.opts.raw_samples, |
daac07b2 | 1055 | "collect raw sample records from all opened counters"), |
bea03405 | 1056 | OPT_BOOLEAN('a', "all-cpus", &record.opts.target.system_wide, |
0e9b20b8 | 1057 | "system-wide collection from all CPUs"), |
bea03405 | 1058 | OPT_STRING('C', "cpu", &record.opts.target.cpu_list, "cpu", |
c45c6ea2 | 1059 | "list of cpus to monitor"), |
d20deb64 | 1060 | OPT_U64('c', "count", &record.opts.user_interval, "event period to sample"), |
f5fc1412 | 1061 | OPT_STRING('o', "output", &record.file.path, "file", |
abaff32a | 1062 | "output file name"), |
69e7e5b0 AH |
1063 | OPT_BOOLEAN_SET('i', "no-inherit", &record.opts.no_inherit, |
1064 | &record.opts.no_inherit_set, | |
1065 | "child tasks do not inherit counters"), | |
d20deb64 | 1066 | OPT_UINTEGER('F', "freq", &record.opts.user_freq, "profile at this frequency"), |
e9db1310 AH |
1067 | OPT_CALLBACK('m', "mmap-pages", &record.opts, "pages[,pages]", |
1068 | "number of mmap data pages and AUX area tracing mmap pages", | |
1069 | record__parse_mmap_pages), | |
d20deb64 | 1070 | OPT_BOOLEAN(0, "group", &record.opts.group, |
43bece79 | 1071 | "put the counters into a counter group"), |
09b0fd45 JO |
1072 | OPT_CALLBACK_NOOPT('g', NULL, &record.opts, |
1073 | NULL, "enables call-graph recording" , | |
1074 | &record_callchain_opt), | |
1075 | OPT_CALLBACK(0, "call-graph", &record.opts, | |
76a26549 | 1076 | "record_mode[,record_size]", record_callchain_help, |
09b0fd45 | 1077 | &record_parse_callchain_opt), |
c0555642 | 1078 | OPT_INCR('v', "verbose", &verbose, |
3da297a6 | 1079 | "be more verbose (show counter open errors, etc)"), |
b44308f5 | 1080 | OPT_BOOLEAN('q', "quiet", &quiet, "don't print any message"), |
d20deb64 | 1081 | OPT_BOOLEAN('s', "stat", &record.opts.inherit_stat, |
649c48a9 | 1082 | "per thread counts"), |
56100321 | 1083 | OPT_BOOLEAN('d', "data", &record.opts.sample_address, "Record the sample addresses"), |
3abebc55 AH |
1084 | OPT_BOOLEAN_SET('T', "timestamp", &record.opts.sample_time, |
1085 | &record.opts.sample_time_set, | |
1086 | "Record the sample timestamps"), | |
56100321 | 1087 | OPT_BOOLEAN('P', "period", &record.opts.period, "Record the sample period"), |
d20deb64 | 1088 | OPT_BOOLEAN('n', "no-samples", &record.opts.no_samples, |
649c48a9 | 1089 | "don't sample"), |
d20deb64 | 1090 | OPT_BOOLEAN('N', "no-buildid-cache", &record.no_buildid_cache, |
a1ac1d3c | 1091 | "do not update the buildid cache"), |
d20deb64 | 1092 | OPT_BOOLEAN('B', "no-buildid", &record.no_buildid, |
baa2f6ce | 1093 | "do not collect buildids in perf.data"), |
d20deb64 | 1094 | OPT_CALLBACK('G', "cgroup", &record.evlist, "name", |
023695d9 SE |
1095 | "monitor event in cgroup name only", |
1096 | parse_cgroups), | |
a6205a35 | 1097 | OPT_UINTEGER('D', "delay", &record.opts.initial_delay, |
6619a53e | 1098 | "ms to wait before starting measurement after program start"), |
bea03405 NK |
1099 | OPT_STRING('u', "uid", &record.opts.target.uid_str, "user", |
1100 | "user to profile"), | |
a5aabdac SE |
1101 | |
1102 | OPT_CALLBACK_NOOPT('b', "branch-any", &record.opts.branch_stack, | |
1103 | "branch any", "sample any taken branches", | |
1104 | parse_branch_stack), | |
1105 | ||
1106 | OPT_CALLBACK('j', "branch-filter", &record.opts.branch_stack, | |
1107 | "branch filter mask", "branch stack filter modes", | |
bdfebd84 | 1108 | parse_branch_stack), |
05484298 AK |
1109 | OPT_BOOLEAN('W', "weight", &record.opts.sample_weight, |
1110 | "sample by weight (on special events only)"), | |
475eeab9 AK |
1111 | OPT_BOOLEAN(0, "transaction", &record.opts.sample_transaction, |
1112 | "sample transaction flags (special events only)"), | |
3aa5939d AH |
1113 | OPT_BOOLEAN(0, "per-thread", &record.opts.target.per_thread, |
1114 | "use per-thread mmaps"), | |
bcc84ec6 SE |
1115 | OPT_CALLBACK_OPTARG('I', "intr-regs", &record.opts.sample_intr_regs, NULL, "any register", |
1116 | "sample selected machine registers on interrupt," | |
1117 | " use -I ? to list register names", parse_regs), | |
85c273d2 AK |
1118 | OPT_BOOLEAN(0, "running-time", &record.opts.running_time, |
1119 | "Record running/enabled time of read (:S) events"), | |
814c8c38 PZ |
1120 | OPT_CALLBACK('k', "clockid", &record.opts, |
1121 | "clockid", "clockid to use for events, see clock_gettime()", | |
1122 | parse_clockid), | |
2dd6d8a1 AH |
1123 | OPT_STRING_OPTARG('S', "snapshot", &record.opts.auxtrace_snapshot_opts, |
1124 | "opts", "AUX area tracing Snapshot Mode", ""), | |
9d9cad76 KL |
1125 | OPT_UINTEGER(0, "proc-map-timeout", &record.opts.proc_map_timeout, |
1126 | "per thread proc mmap processing timeout in ms"), | |
b757bb09 AH |
1127 | OPT_BOOLEAN(0, "switch-events", &record.opts.record_switch_events, |
1128 | "Record context switch events"), | |
71dc2326 WN |
1129 | OPT_STRING(0, "clang-path", &llvm_param.clang_path, "clang path", |
1130 | "clang binary to use for compiling BPF scriptlets"), | |
1131 | OPT_STRING(0, "clang-opt", &llvm_param.clang_opt, "clang options", | |
1132 | "options passed to clang when compiling BPF scriptlets"), | |
7efe0e03 HK |
1133 | OPT_STRING(0, "vmlinux", &symbol_conf.vmlinux_name, |
1134 | "file", "vmlinux pathname"), | |
0e9b20b8 IM |
1135 | OPT_END() |
1136 | }; | |
1137 | ||
e5b2c207 NK |
1138 | struct option *record_options = __record_options; |
1139 | ||
1d037ca1 | 1140 | int cmd_record(int argc, const char **argv, const char *prefix __maybe_unused) |
0e9b20b8 | 1141 | { |
ef149c25 | 1142 | int err; |
8c6f45a7 | 1143 | struct record *rec = &record; |
16ad2ffb | 1144 | char errbuf[BUFSIZ]; |
0e9b20b8 | 1145 | |
48e1cab1 WN |
1146 | #ifndef HAVE_LIBBPF_SUPPORT |
1147 | # define set_nobuild(s, l, c) set_option_nobuild(record_options, s, l, "NO_LIBBPF=1", c) | |
1148 | set_nobuild('\0', "clang-path", true); | |
1149 | set_nobuild('\0', "clang-opt", true); | |
1150 | # undef set_nobuild | |
7efe0e03 HK |
1151 | #endif |
1152 | ||
1153 | #ifndef HAVE_BPF_PROLOGUE | |
1154 | # if !defined (HAVE_DWARF_SUPPORT) | |
1155 | # define REASON "NO_DWARF=1" | |
1156 | # elif !defined (HAVE_LIBBPF_SUPPORT) | |
1157 | # define REASON "NO_LIBBPF=1" | |
1158 | # else | |
1159 | # define REASON "this architecture doesn't support BPF prologue" | |
1160 | # endif | |
1161 | # define set_nobuild(s, l, c) set_option_nobuild(record_options, s, l, REASON, c) | |
1162 | set_nobuild('\0', "vmlinux", true); | |
1163 | # undef set_nobuild | |
1164 | # undef REASON | |
48e1cab1 WN |
1165 | #endif |
1166 | ||
3e2be2da ACM |
1167 | rec->evlist = perf_evlist__new(); |
1168 | if (rec->evlist == NULL) | |
361c99a6 ACM |
1169 | return -ENOMEM; |
1170 | ||
eb853e80 JO |
1171 | perf_config(perf_record_config, rec); |
1172 | ||
bca647aa | 1173 | argc = parse_options(argc, argv, record_options, record_usage, |
655000e7 | 1174 | PARSE_OPT_STOP_AT_NON_OPTION); |
602ad878 | 1175 | if (!argc && target__none(&rec->opts.target)) |
bca647aa | 1176 | usage_with_options(record_usage, record_options); |
0e9b20b8 | 1177 | |
bea03405 | 1178 | if (nr_cgroups && !rec->opts.target.system_wide) { |
c7118369 NK |
1179 | usage_with_options_msg(record_usage, record_options, |
1180 | "cgroup monitoring only available in system-wide mode"); | |
1181 | ||
023695d9 | 1182 | } |
b757bb09 AH |
1183 | if (rec->opts.record_switch_events && |
1184 | !perf_can_record_switch_events()) { | |
c7118369 NK |
1185 | ui__error("kernel does not support recording context switch events\n"); |
1186 | parse_options_usage(record_usage, record_options, "switch-events", 0); | |
1187 | return -EINVAL; | |
b757bb09 | 1188 | } |
023695d9 | 1189 | |
ef149c25 AH |
1190 | if (!rec->itr) { |
1191 | rec->itr = auxtrace_record__init(rec->evlist, &err); | |
1192 | if (err) | |
1193 | return err; | |
1194 | } | |
1195 | ||
2dd6d8a1 AH |
1196 | err = auxtrace_parse_snapshot_options(rec->itr, &rec->opts, |
1197 | rec->opts.auxtrace_snapshot_opts); | |
1198 | if (err) | |
1199 | return err; | |
1200 | ||
ef149c25 AH |
1201 | err = -ENOMEM; |
1202 | ||
0a7e6d1b | 1203 | symbol__init(NULL); |
baa2f6ce | 1204 | |
ec80fde7 | 1205 | if (symbol_conf.kptr_restrict) |
646aaea6 ACM |
1206 | pr_warning( |
1207 | "WARNING: Kernel address maps (/proc/{kallsyms,modules}) are restricted,\n" | |
1208 | "check /proc/sys/kernel/kptr_restrict.\n\n" | |
1209 | "Samples in kernel functions may not be resolved if a suitable vmlinux\n" | |
1210 | "file is not found in the buildid cache or in the vmlinux path.\n\n" | |
1211 | "Samples in kernel modules won't be resolved at all.\n\n" | |
1212 | "If some relocation was applied (e.g. kexec) symbols may be misresolved\n" | |
1213 | "even with a suitable vmlinux or kallsyms file.\n\n"); | |
ec80fde7 | 1214 | |
d20deb64 | 1215 | if (rec->no_buildid_cache || rec->no_buildid) |
a1ac1d3c | 1216 | disable_buildid_cache(); |
655000e7 | 1217 | |
3e2be2da ACM |
1218 | if (rec->evlist->nr_entries == 0 && |
1219 | perf_evlist__add_default(rec->evlist) < 0) { | |
69aad6f1 ACM |
1220 | pr_err("Not enough memory for event selector list\n"); |
1221 | goto out_symbol_exit; | |
bbd36e5e | 1222 | } |
0e9b20b8 | 1223 | |
69e7e5b0 AH |
1224 | if (rec->opts.target.tid && !rec->opts.no_inherit_set) |
1225 | rec->opts.no_inherit = true; | |
1226 | ||
602ad878 | 1227 | err = target__validate(&rec->opts.target); |
16ad2ffb | 1228 | if (err) { |
602ad878 | 1229 | target__strerror(&rec->opts.target, err, errbuf, BUFSIZ); |
16ad2ffb NK |
1230 | ui__warning("%s", errbuf); |
1231 | } | |
1232 | ||
602ad878 | 1233 | err = target__parse_uid(&rec->opts.target); |
16ad2ffb NK |
1234 | if (err) { |
1235 | int saved_errno = errno; | |
4bd0f2d2 | 1236 | |
602ad878 | 1237 | target__strerror(&rec->opts.target, err, errbuf, BUFSIZ); |
3780f488 | 1238 | ui__error("%s", errbuf); |
16ad2ffb NK |
1239 | |
1240 | err = -saved_errno; | |
8fa60e1f | 1241 | goto out_symbol_exit; |
16ad2ffb | 1242 | } |
0d37aa34 | 1243 | |
16ad2ffb | 1244 | err = -ENOMEM; |
3e2be2da | 1245 | if (perf_evlist__create_maps(rec->evlist, &rec->opts.target) < 0) |
dd7927f4 | 1246 | usage_with_options(record_usage, record_options); |
69aad6f1 | 1247 | |
ef149c25 AH |
1248 | err = auxtrace_record__options(rec->itr, rec->evlist, &rec->opts); |
1249 | if (err) | |
1250 | goto out_symbol_exit; | |
1251 | ||
b4006796 | 1252 | if (record_opts__config(&rec->opts)) { |
39d17dac | 1253 | err = -EINVAL; |
03ad9747 | 1254 | goto out_symbol_exit; |
7e4ff9e3 MG |
1255 | } |
1256 | ||
d20deb64 | 1257 | err = __cmd_record(&record, argc, argv); |
d65a458b | 1258 | out_symbol_exit: |
45604710 | 1259 | perf_evlist__delete(rec->evlist); |
d65a458b | 1260 | symbol__exit(); |
ef149c25 | 1261 | auxtrace_record__free(rec->itr); |
39d17dac | 1262 | return err; |
0e9b20b8 | 1263 | } |
2dd6d8a1 AH |
1264 | |
1265 | static void snapshot_sig_handler(int sig __maybe_unused) | |
1266 | { | |
1267 | if (!auxtrace_snapshot_enabled) | |
1268 | return; | |
1269 | auxtrace_snapshot_enabled = 0; | |
1270 | auxtrace_snapshot_err = auxtrace_record__snapshot_start(record.itr); | |
1271 | auxtrace_record__snapshot_started = 1; | |
1272 | } |