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" |
4b6ab94e | 14 | #include <subcmd/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 | 51 | bool no_buildid; |
d2db9a98 | 52 | bool no_buildid_set; |
d20deb64 | 53 | bool no_buildid_cache; |
d2db9a98 | 54 | bool no_buildid_cache_set; |
6156681b | 55 | bool buildid_all; |
9f065194 | 56 | unsigned long long samples; |
0f82ebc4 | 57 | }; |
a21ca2ca | 58 | |
8c6f45a7 | 59 | static int record__write(struct record *rec, void *bf, size_t size) |
f5970550 | 60 | { |
cf8b2e69 | 61 | if (perf_data_file__write(rec->session->file, bf, size) < 0) { |
50a9b868 JO |
62 | pr_err("failed to write perf data, error: %m\n"); |
63 | return -1; | |
f5970550 | 64 | } |
8d3eca20 | 65 | |
cf8b2e69 | 66 | rec->bytes_written += size; |
8d3eca20 | 67 | return 0; |
f5970550 PZ |
68 | } |
69 | ||
45694aa7 | 70 | static int process_synthesized_event(struct perf_tool *tool, |
d20deb64 | 71 | union perf_event *event, |
1d037ca1 IT |
72 | struct perf_sample *sample __maybe_unused, |
73 | struct machine *machine __maybe_unused) | |
234fbbf5 | 74 | { |
8c6f45a7 ACM |
75 | struct record *rec = container_of(tool, struct record, tool); |
76 | return record__write(rec, event, event->header.size); | |
234fbbf5 ACM |
77 | } |
78 | ||
e5685730 | 79 | static int record__mmap_read(struct record *rec, int idx) |
de9ac07b | 80 | { |
e5685730 | 81 | struct perf_mmap *md = &rec->evlist->mmap[idx]; |
7b8283b5 DA |
82 | u64 head = perf_mmap__read_head(md); |
83 | u64 old = md->prev; | |
918512b4 | 84 | unsigned char *data = md->base + page_size; |
de9ac07b PZ |
85 | unsigned long size; |
86 | void *buf; | |
8d3eca20 | 87 | int rc = 0; |
de9ac07b | 88 | |
dc82009a | 89 | if (old == head) |
8d3eca20 | 90 | return 0; |
dc82009a | 91 | |
d20deb64 | 92 | rec->samples++; |
de9ac07b PZ |
93 | |
94 | size = head - old; | |
95 | ||
96 | if ((old & md->mask) + size != (head & md->mask)) { | |
97 | buf = &data[old & md->mask]; | |
98 | size = md->mask + 1 - (old & md->mask); | |
99 | old += size; | |
021e9f47 | 100 | |
8c6f45a7 | 101 | if (record__write(rec, buf, size) < 0) { |
8d3eca20 DA |
102 | rc = -1; |
103 | goto out; | |
104 | } | |
de9ac07b PZ |
105 | } |
106 | ||
107 | buf = &data[old & md->mask]; | |
108 | size = head - old; | |
109 | old += size; | |
021e9f47 | 110 | |
8c6f45a7 | 111 | if (record__write(rec, buf, size) < 0) { |
8d3eca20 DA |
112 | rc = -1; |
113 | goto out; | |
114 | } | |
de9ac07b PZ |
115 | |
116 | md->prev = old; | |
e5685730 | 117 | perf_evlist__mmap_consume(rec->evlist, idx); |
8d3eca20 DA |
118 | out: |
119 | return rc; | |
de9ac07b PZ |
120 | } |
121 | ||
2dd6d8a1 AH |
122 | static volatile int done; |
123 | static volatile int signr = -1; | |
124 | static volatile int child_finished; | |
125 | static volatile int auxtrace_snapshot_enabled; | |
126 | static volatile int auxtrace_snapshot_err; | |
127 | static volatile int auxtrace_record__snapshot_started; | |
128 | ||
129 | static void sig_handler(int sig) | |
130 | { | |
131 | if (sig == SIGCHLD) | |
132 | child_finished = 1; | |
133 | else | |
134 | signr = sig; | |
135 | ||
136 | done = 1; | |
137 | } | |
138 | ||
139 | static void record__sig_exit(void) | |
140 | { | |
141 | if (signr == -1) | |
142 | return; | |
143 | ||
144 | signal(signr, SIG_DFL); | |
145 | raise(signr); | |
146 | } | |
147 | ||
e31f0d01 AH |
148 | #ifdef HAVE_AUXTRACE_SUPPORT |
149 | ||
ef149c25 AH |
150 | static int record__process_auxtrace(struct perf_tool *tool, |
151 | union perf_event *event, void *data1, | |
152 | size_t len1, void *data2, size_t len2) | |
153 | { | |
154 | struct record *rec = container_of(tool, struct record, tool); | |
99fa2984 | 155 | struct perf_data_file *file = &rec->file; |
ef149c25 AH |
156 | size_t padding; |
157 | u8 pad[8] = {0}; | |
158 | ||
99fa2984 AH |
159 | if (!perf_data_file__is_pipe(file)) { |
160 | off_t file_offset; | |
161 | int fd = perf_data_file__fd(file); | |
162 | int err; | |
163 | ||
164 | file_offset = lseek(fd, 0, SEEK_CUR); | |
165 | if (file_offset == -1) | |
166 | return -1; | |
167 | err = auxtrace_index__auxtrace_event(&rec->session->auxtrace_index, | |
168 | event, file_offset); | |
169 | if (err) | |
170 | return err; | |
171 | } | |
172 | ||
ef149c25 AH |
173 | /* event.auxtrace.size includes padding, see __auxtrace_mmap__read() */ |
174 | padding = (len1 + len2) & 7; | |
175 | if (padding) | |
176 | padding = 8 - padding; | |
177 | ||
178 | record__write(rec, event, event->header.size); | |
179 | record__write(rec, data1, len1); | |
180 | if (len2) | |
181 | record__write(rec, data2, len2); | |
182 | record__write(rec, &pad, padding); | |
183 | ||
184 | return 0; | |
185 | } | |
186 | ||
187 | static int record__auxtrace_mmap_read(struct record *rec, | |
188 | struct auxtrace_mmap *mm) | |
189 | { | |
190 | int ret; | |
191 | ||
192 | ret = auxtrace_mmap__read(mm, rec->itr, &rec->tool, | |
193 | record__process_auxtrace); | |
194 | if (ret < 0) | |
195 | return ret; | |
196 | ||
197 | if (ret) | |
198 | rec->samples++; | |
199 | ||
200 | return 0; | |
201 | } | |
202 | ||
2dd6d8a1 AH |
203 | static int record__auxtrace_mmap_read_snapshot(struct record *rec, |
204 | struct auxtrace_mmap *mm) | |
205 | { | |
206 | int ret; | |
207 | ||
208 | ret = auxtrace_mmap__read_snapshot(mm, rec->itr, &rec->tool, | |
209 | record__process_auxtrace, | |
210 | rec->opts.auxtrace_snapshot_size); | |
211 | if (ret < 0) | |
212 | return ret; | |
213 | ||
214 | if (ret) | |
215 | rec->samples++; | |
216 | ||
217 | return 0; | |
218 | } | |
219 | ||
220 | static int record__auxtrace_read_snapshot_all(struct record *rec) | |
221 | { | |
222 | int i; | |
223 | int rc = 0; | |
224 | ||
225 | for (i = 0; i < rec->evlist->nr_mmaps; i++) { | |
226 | struct auxtrace_mmap *mm = | |
227 | &rec->evlist->mmap[i].auxtrace_mmap; | |
228 | ||
229 | if (!mm->base) | |
230 | continue; | |
231 | ||
232 | if (record__auxtrace_mmap_read_snapshot(rec, mm) != 0) { | |
233 | rc = -1; | |
234 | goto out; | |
235 | } | |
236 | } | |
237 | out: | |
238 | return rc; | |
239 | } | |
240 | ||
241 | static void record__read_auxtrace_snapshot(struct record *rec) | |
242 | { | |
243 | pr_debug("Recording AUX area tracing snapshot\n"); | |
244 | if (record__auxtrace_read_snapshot_all(rec) < 0) { | |
245 | auxtrace_snapshot_err = -1; | |
246 | } else { | |
247 | auxtrace_snapshot_err = auxtrace_record__snapshot_finish(rec->itr); | |
248 | if (!auxtrace_snapshot_err) | |
249 | auxtrace_snapshot_enabled = 1; | |
250 | } | |
251 | } | |
252 | ||
e31f0d01 AH |
253 | #else |
254 | ||
255 | static inline | |
256 | int record__auxtrace_mmap_read(struct record *rec __maybe_unused, | |
257 | struct auxtrace_mmap *mm __maybe_unused) | |
258 | { | |
259 | return 0; | |
260 | } | |
261 | ||
2dd6d8a1 AH |
262 | static inline |
263 | void record__read_auxtrace_snapshot(struct record *rec __maybe_unused) | |
de9ac07b | 264 | { |
f7b7c26e PZ |
265 | } |
266 | ||
2dd6d8a1 AH |
267 | static inline |
268 | int auxtrace_record__snapshot_start(struct auxtrace_record *itr __maybe_unused) | |
f7b7c26e | 269 | { |
2dd6d8a1 | 270 | return 0; |
de9ac07b PZ |
271 | } |
272 | ||
2dd6d8a1 AH |
273 | #endif |
274 | ||
8c6f45a7 | 275 | static int record__open(struct record *rec) |
dd7927f4 | 276 | { |
56e52e85 | 277 | char msg[512]; |
6a4bb04c | 278 | struct perf_evsel *pos; |
d20deb64 ACM |
279 | struct perf_evlist *evlist = rec->evlist; |
280 | struct perf_session *session = rec->session; | |
b4006796 | 281 | struct record_opts *opts = &rec->opts; |
8d3eca20 | 282 | int rc = 0; |
dd7927f4 | 283 | |
f77a9518 | 284 | perf_evlist__config(evlist, opts); |
cac21425 | 285 | |
0050f7aa | 286 | evlist__for_each(evlist, pos) { |
dd7927f4 | 287 | try_again: |
d988d5ee | 288 | if (perf_evsel__open(pos, pos->cpus, pos->threads) < 0) { |
56e52e85 | 289 | if (perf_evsel__fallback(pos, errno, msg, sizeof(msg))) { |
d6d901c2 | 290 | if (verbose) |
c0a54341 | 291 | ui__warning("%s\n", msg); |
d6d901c2 ZY |
292 | goto try_again; |
293 | } | |
ca6a4258 | 294 | |
56e52e85 ACM |
295 | rc = -errno; |
296 | perf_evsel__open_strerror(pos, &opts->target, | |
297 | errno, msg, sizeof(msg)); | |
298 | ui__error("%s\n", msg); | |
8d3eca20 | 299 | goto out; |
c171b552 LZ |
300 | } |
301 | } | |
a43d3f08 | 302 | |
23d4aad4 ACM |
303 | if (perf_evlist__apply_filters(evlist, &pos)) { |
304 | error("failed to set filter \"%s\" on event %s with %d (%s)\n", | |
305 | pos->filter, perf_evsel__name(pos), errno, | |
35550da3 | 306 | strerror_r(errno, msg, sizeof(msg))); |
8d3eca20 DA |
307 | rc = -1; |
308 | goto out; | |
0a102479 FW |
309 | } |
310 | ||
ef149c25 | 311 | if (perf_evlist__mmap_ex(evlist, opts->mmap_pages, false, |
2dd6d8a1 AH |
312 | opts->auxtrace_mmap_pages, |
313 | opts->auxtrace_snapshot_mode) < 0) { | |
8d3eca20 DA |
314 | if (errno == EPERM) { |
315 | pr_err("Permission error mapping pages.\n" | |
316 | "Consider increasing " | |
317 | "/proc/sys/kernel/perf_event_mlock_kb,\n" | |
318 | "or try again with a smaller value of -m/--mmap_pages.\n" | |
ef149c25 AH |
319 | "(current value: %u,%u)\n", |
320 | opts->mmap_pages, opts->auxtrace_mmap_pages); | |
8d3eca20 | 321 | rc = -errno; |
8d3eca20 | 322 | } else { |
35550da3 MH |
323 | pr_err("failed to mmap with %d (%s)\n", errno, |
324 | strerror_r(errno, msg, sizeof(msg))); | |
8d3eca20 DA |
325 | rc = -errno; |
326 | } | |
327 | goto out; | |
18e60939 | 328 | } |
0a27d7f9 | 329 | |
563aecb2 | 330 | session->evlist = evlist; |
7b56cce2 | 331 | perf_session__set_id_hdr_size(session); |
8d3eca20 DA |
332 | out: |
333 | return rc; | |
16c8a109 PZ |
334 | } |
335 | ||
e3d59112 NK |
336 | static int process_sample_event(struct perf_tool *tool, |
337 | union perf_event *event, | |
338 | struct perf_sample *sample, | |
339 | struct perf_evsel *evsel, | |
340 | struct machine *machine) | |
341 | { | |
342 | struct record *rec = container_of(tool, struct record, tool); | |
343 | ||
344 | rec->samples++; | |
345 | ||
346 | return build_id__mark_dso_hit(tool, event, sample, evsel, machine); | |
347 | } | |
348 | ||
8c6f45a7 | 349 | static int process_buildids(struct record *rec) |
6122e4e4 | 350 | { |
f5fc1412 JO |
351 | struct perf_data_file *file = &rec->file; |
352 | struct perf_session *session = rec->session; | |
6122e4e4 | 353 | |
457ae94a | 354 | if (file->size == 0) |
9f591fd7 ACM |
355 | return 0; |
356 | ||
00dc8657 NK |
357 | /* |
358 | * During this process, it'll load kernel map and replace the | |
359 | * dso->long_name to a real pathname it found. In this case | |
360 | * we prefer the vmlinux path like | |
361 | * /lib/modules/3.16.4/build/vmlinux | |
362 | * | |
363 | * rather than build-id path (in debug directory). | |
364 | * $HOME/.debug/.build-id/f0/6e17aa50adf4d00b88925e03775de107611551 | |
365 | */ | |
366 | symbol_conf.ignore_vmlinux_buildid = true; | |
367 | ||
6156681b NK |
368 | /* |
369 | * If --buildid-all is given, it marks all DSO regardless of hits, | |
370 | * so no need to process samples. | |
371 | */ | |
372 | if (rec->buildid_all) | |
373 | rec->tool.sample = NULL; | |
374 | ||
b7b61cbe | 375 | return perf_session__process_events(session); |
6122e4e4 ACM |
376 | } |
377 | ||
8115d60c | 378 | static void perf_event__synthesize_guest_os(struct machine *machine, void *data) |
a1645ce1 ZY |
379 | { |
380 | int err; | |
45694aa7 | 381 | struct perf_tool *tool = data; |
a1645ce1 ZY |
382 | /* |
383 | *As for guest kernel when processing subcommand record&report, | |
384 | *we arrange module mmap prior to guest kernel mmap and trigger | |
385 | *a preload dso because default guest module symbols are loaded | |
386 | *from guest kallsyms instead of /lib/modules/XXX/XXX. This | |
387 | *method is used to avoid symbol missing when the first addr is | |
388 | *in module instead of in guest kernel. | |
389 | */ | |
45694aa7 | 390 | err = perf_event__synthesize_modules(tool, process_synthesized_event, |
743eb868 | 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 | 395 | |
a1645ce1 ZY |
396 | /* |
397 | * We use _stext for guest kernel because guest kernel's /proc/kallsyms | |
398 | * have no _text sometimes. | |
399 | */ | |
45694aa7 | 400 | err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event, |
0ae617be | 401 | machine); |
a1645ce1 ZY |
402 | if (err < 0) |
403 | pr_err("Couldn't record guest kernel [%d]'s reference" | |
23346f21 | 404 | " relocation symbol.\n", machine->pid); |
a1645ce1 ZY |
405 | } |
406 | ||
98402807 FW |
407 | static struct perf_event_header finished_round_event = { |
408 | .size = sizeof(struct perf_event_header), | |
409 | .type = PERF_RECORD_FINISHED_ROUND, | |
410 | }; | |
411 | ||
8c6f45a7 | 412 | static int record__mmap_read_all(struct record *rec) |
98402807 | 413 | { |
dcabb507 | 414 | u64 bytes_written = rec->bytes_written; |
0e2e63dd | 415 | int i; |
8d3eca20 | 416 | int rc = 0; |
98402807 | 417 | |
d20deb64 | 418 | for (i = 0; i < rec->evlist->nr_mmaps; i++) { |
ef149c25 AH |
419 | struct auxtrace_mmap *mm = &rec->evlist->mmap[i].auxtrace_mmap; |
420 | ||
8d3eca20 | 421 | if (rec->evlist->mmap[i].base) { |
e5685730 | 422 | if (record__mmap_read(rec, i) != 0) { |
8d3eca20 DA |
423 | rc = -1; |
424 | goto out; | |
425 | } | |
426 | } | |
ef149c25 | 427 | |
2dd6d8a1 | 428 | if (mm->base && !rec->opts.auxtrace_snapshot_mode && |
ef149c25 AH |
429 | record__auxtrace_mmap_read(rec, mm) != 0) { |
430 | rc = -1; | |
431 | goto out; | |
432 | } | |
98402807 FW |
433 | } |
434 | ||
dcabb507 JO |
435 | /* |
436 | * Mark the round finished in case we wrote | |
437 | * at least one event. | |
438 | */ | |
439 | if (bytes_written != rec->bytes_written) | |
440 | rc = record__write(rec, &finished_round_event, sizeof(finished_round_event)); | |
8d3eca20 DA |
441 | |
442 | out: | |
443 | return rc; | |
98402807 FW |
444 | } |
445 | ||
8c6f45a7 | 446 | static void record__init_features(struct record *rec) |
57706abc | 447 | { |
57706abc DA |
448 | struct perf_session *session = rec->session; |
449 | int feat; | |
450 | ||
451 | for (feat = HEADER_FIRST_FEATURE; feat < HEADER_LAST_FEATURE; feat++) | |
452 | perf_header__set_feat(&session->header, feat); | |
453 | ||
454 | if (rec->no_buildid) | |
455 | perf_header__clear_feat(&session->header, HEADER_BUILD_ID); | |
456 | ||
3e2be2da | 457 | if (!have_tracepoints(&rec->evlist->entries)) |
57706abc DA |
458 | perf_header__clear_feat(&session->header, HEADER_TRACING_DATA); |
459 | ||
460 | if (!rec->opts.branch_stack) | |
461 | perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK); | |
ef149c25 AH |
462 | |
463 | if (!rec->opts.full_auxtrace) | |
464 | perf_header__clear_feat(&session->header, HEADER_AUXTRACE); | |
ffa517ad JO |
465 | |
466 | perf_header__clear_feat(&session->header, HEADER_STAT); | |
57706abc DA |
467 | } |
468 | ||
f33cbe72 ACM |
469 | static volatile int workload_exec_errno; |
470 | ||
471 | /* | |
472 | * perf_evlist__prepare_workload will send a SIGUSR1 | |
473 | * if the fork fails, since we asked by setting its | |
474 | * want_signal to true. | |
475 | */ | |
45604710 NK |
476 | static void workload_exec_failed_signal(int signo __maybe_unused, |
477 | siginfo_t *info, | |
f33cbe72 ACM |
478 | void *ucontext __maybe_unused) |
479 | { | |
480 | workload_exec_errno = info->si_value.sival_int; | |
481 | done = 1; | |
f33cbe72 ACM |
482 | child_finished = 1; |
483 | } | |
484 | ||
2dd6d8a1 AH |
485 | static void snapshot_sig_handler(int sig); |
486 | ||
8c6f45a7 | 487 | static int __cmd_record(struct record *rec, int argc, const char **argv) |
16c8a109 | 488 | { |
57706abc | 489 | int err; |
45604710 | 490 | int status = 0; |
8b412664 | 491 | unsigned long waking = 0; |
46be604b | 492 | const bool forks = argc > 0; |
23346f21 | 493 | struct machine *machine; |
45694aa7 | 494 | struct perf_tool *tool = &rec->tool; |
b4006796 | 495 | struct record_opts *opts = &rec->opts; |
f5fc1412 | 496 | struct perf_data_file *file = &rec->file; |
d20deb64 | 497 | struct perf_session *session; |
6dcf45ef | 498 | bool disabled = false, draining = false; |
42aa276f | 499 | int fd; |
de9ac07b | 500 | |
d20deb64 | 501 | rec->progname = argv[0]; |
33e49ea7 | 502 | |
45604710 | 503 | atexit(record__sig_exit); |
f5970550 PZ |
504 | signal(SIGCHLD, sig_handler); |
505 | signal(SIGINT, sig_handler); | |
804f7ac7 | 506 | signal(SIGTERM, sig_handler); |
2dd6d8a1 AH |
507 | if (rec->opts.auxtrace_snapshot_mode) |
508 | signal(SIGUSR2, snapshot_sig_handler); | |
509 | else | |
510 | signal(SIGUSR2, SIG_IGN); | |
f5970550 | 511 | |
b7b61cbe | 512 | session = perf_session__new(file, false, tool); |
94c744b6 | 513 | if (session == NULL) { |
ffa91880 | 514 | pr_err("Perf session creation failed.\n"); |
a9a70bbc ACM |
515 | return -1; |
516 | } | |
517 | ||
42aa276f | 518 | fd = perf_data_file__fd(file); |
d20deb64 ACM |
519 | rec->session = session; |
520 | ||
8c6f45a7 | 521 | record__init_features(rec); |
330aa675 | 522 | |
d4db3f16 | 523 | if (forks) { |
3e2be2da | 524 | err = perf_evlist__prepare_workload(rec->evlist, &opts->target, |
f5fc1412 | 525 | argv, file->is_pipe, |
735f7e0b | 526 | workload_exec_failed_signal); |
35b9d88e ACM |
527 | if (err < 0) { |
528 | pr_err("Couldn't run the workload!\n"); | |
45604710 | 529 | status = err; |
35b9d88e | 530 | goto out_delete_session; |
856e9660 | 531 | } |
856e9660 PZ |
532 | } |
533 | ||
8c6f45a7 | 534 | if (record__open(rec) != 0) { |
8d3eca20 | 535 | err = -1; |
45604710 | 536 | goto out_child; |
8d3eca20 | 537 | } |
de9ac07b | 538 | |
cca8482c AH |
539 | /* |
540 | * Normally perf_session__new would do this, but it doesn't have the | |
541 | * evlist. | |
542 | */ | |
543 | if (rec->tool.ordered_events && !perf_evlist__sample_id_all(rec->evlist)) { | |
544 | pr_warning("WARNING: No sample_id_all support, falling back to unordered processing\n"); | |
545 | rec->tool.ordered_events = false; | |
546 | } | |
547 | ||
3e2be2da | 548 | if (!rec->evlist->nr_groups) |
a8bb559b NK |
549 | perf_header__clear_feat(&session->header, HEADER_GROUP_DESC); |
550 | ||
f5fc1412 | 551 | if (file->is_pipe) { |
42aa276f | 552 | err = perf_header__write_pipe(fd); |
529870e3 | 553 | if (err < 0) |
45604710 | 554 | goto out_child; |
563aecb2 | 555 | } else { |
42aa276f | 556 | err = perf_session__write_header(session, rec->evlist, fd, false); |
d5eed904 | 557 | if (err < 0) |
45604710 | 558 | goto out_child; |
56b03f3c ACM |
559 | } |
560 | ||
d3665498 | 561 | if (!rec->no_buildid |
e20960c0 | 562 | && !perf_header__has_feat(&session->header, HEADER_BUILD_ID)) { |
d3665498 | 563 | pr_err("Couldn't generate buildids. " |
e20960c0 | 564 | "Use --no-buildid to profile anyway.\n"); |
8d3eca20 | 565 | err = -1; |
45604710 | 566 | goto out_child; |
e20960c0 RR |
567 | } |
568 | ||
34ba5122 | 569 | machine = &session->machines.host; |
743eb868 | 570 | |
f5fc1412 | 571 | if (file->is_pipe) { |
45694aa7 | 572 | err = perf_event__synthesize_attrs(tool, session, |
d20deb64 | 573 | process_synthesized_event); |
2c46dbb5 TZ |
574 | if (err < 0) { |
575 | pr_err("Couldn't synthesize attrs.\n"); | |
45604710 | 576 | goto out_child; |
2c46dbb5 | 577 | } |
cd19a035 | 578 | |
3e2be2da | 579 | if (have_tracepoints(&rec->evlist->entries)) { |
63e0c771 TZ |
580 | /* |
581 | * FIXME err <= 0 here actually means that | |
582 | * there were no tracepoints so its not really | |
583 | * an error, just that we don't need to | |
584 | * synthesize anything. We really have to | |
585 | * return this more properly and also | |
586 | * propagate errors that now are calling die() | |
587 | */ | |
42aa276f | 588 | err = perf_event__synthesize_tracing_data(tool, fd, rec->evlist, |
743eb868 | 589 | process_synthesized_event); |
63e0c771 TZ |
590 | if (err <= 0) { |
591 | pr_err("Couldn't record tracing data.\n"); | |
45604710 | 592 | goto out_child; |
63e0c771 | 593 | } |
f34b9001 | 594 | rec->bytes_written += err; |
63e0c771 | 595 | } |
2c46dbb5 TZ |
596 | } |
597 | ||
ef149c25 AH |
598 | if (rec->opts.full_auxtrace) { |
599 | err = perf_event__synthesize_auxtrace_info(rec->itr, tool, | |
600 | session, process_synthesized_event); | |
601 | if (err) | |
602 | goto out_delete_session; | |
603 | } | |
604 | ||
45694aa7 | 605 | err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event, |
0ae617be | 606 | machine); |
c1a3a4b9 ACM |
607 | if (err < 0) |
608 | pr_err("Couldn't record kernel reference relocation symbol\n" | |
609 | "Symbol resolution may be skewed if relocation was used (e.g. kexec).\n" | |
610 | "Check /proc/kallsyms permission or run as root.\n"); | |
b7cece76 | 611 | |
45694aa7 | 612 | err = perf_event__synthesize_modules(tool, process_synthesized_event, |
743eb868 | 613 | machine); |
c1a3a4b9 ACM |
614 | if (err < 0) |
615 | pr_err("Couldn't record kernel module information.\n" | |
616 | "Symbol resolution may be skewed if relocation was used (e.g. kexec).\n" | |
617 | "Check /proc/modules permission or run as root.\n"); | |
618 | ||
7e383de4 | 619 | if (perf_guest) { |
876650e6 ACM |
620 | machines__process_guests(&session->machines, |
621 | perf_event__synthesize_guest_os, tool); | |
7e383de4 | 622 | } |
7c6a1c65 | 623 | |
3e2be2da | 624 | err = __machine__synthesize_threads(machine, tool, &opts->target, rec->evlist->threads, |
9d9cad76 KL |
625 | process_synthesized_event, opts->sample_address, |
626 | opts->proc_map_timeout); | |
8d3eca20 | 627 | if (err != 0) |
45604710 | 628 | goto out_child; |
8d3eca20 | 629 | |
d20deb64 | 630 | if (rec->realtime_prio) { |
de9ac07b PZ |
631 | struct sched_param param; |
632 | ||
d20deb64 | 633 | param.sched_priority = rec->realtime_prio; |
de9ac07b | 634 | if (sched_setscheduler(0, SCHED_FIFO, ¶m)) { |
6beba7ad | 635 | pr_err("Could not set realtime priority.\n"); |
8d3eca20 | 636 | err = -1; |
45604710 | 637 | goto out_child; |
de9ac07b PZ |
638 | } |
639 | } | |
640 | ||
774cb499 JO |
641 | /* |
642 | * When perf is starting the traced process, all the events | |
643 | * (apart from group members) have enable_on_exec=1 set, | |
644 | * so don't spoil it by prematurely enabling them. | |
645 | */ | |
6619a53e | 646 | if (!target__none(&opts->target) && !opts->initial_delay) |
3e2be2da | 647 | perf_evlist__enable(rec->evlist); |
764e16a3 | 648 | |
856e9660 PZ |
649 | /* |
650 | * Let the child rip | |
651 | */ | |
e803cf97 | 652 | if (forks) { |
e5bed564 NK |
653 | union perf_event *event; |
654 | ||
655 | event = malloc(sizeof(event->comm) + machine->id_hdr_size); | |
656 | if (event == NULL) { | |
657 | err = -ENOMEM; | |
658 | goto out_child; | |
659 | } | |
660 | ||
e803cf97 NK |
661 | /* |
662 | * Some H/W events are generated before COMM event | |
663 | * which is emitted during exec(), so perf script | |
664 | * cannot see a correct process name for those events. | |
665 | * Synthesize COMM event to prevent it. | |
666 | */ | |
e5bed564 | 667 | perf_event__synthesize_comm(tool, event, |
e803cf97 NK |
668 | rec->evlist->workload.pid, |
669 | process_synthesized_event, | |
670 | machine); | |
e5bed564 | 671 | free(event); |
e803cf97 | 672 | |
3e2be2da | 673 | perf_evlist__start_workload(rec->evlist); |
e803cf97 | 674 | } |
856e9660 | 675 | |
6619a53e AK |
676 | if (opts->initial_delay) { |
677 | usleep(opts->initial_delay * 1000); | |
678 | perf_evlist__enable(rec->evlist); | |
679 | } | |
680 | ||
2dd6d8a1 | 681 | auxtrace_snapshot_enabled = 1; |
649c48a9 | 682 | for (;;) { |
9f065194 | 683 | unsigned long long hits = rec->samples; |
de9ac07b | 684 | |
8c6f45a7 | 685 | if (record__mmap_read_all(rec) < 0) { |
2dd6d8a1 | 686 | auxtrace_snapshot_enabled = 0; |
8d3eca20 | 687 | err = -1; |
45604710 | 688 | goto out_child; |
8d3eca20 | 689 | } |
de9ac07b | 690 | |
2dd6d8a1 AH |
691 | if (auxtrace_record__snapshot_started) { |
692 | auxtrace_record__snapshot_started = 0; | |
693 | if (!auxtrace_snapshot_err) | |
694 | record__read_auxtrace_snapshot(rec); | |
695 | if (auxtrace_snapshot_err) { | |
696 | pr_err("AUX area tracing snapshot failed\n"); | |
697 | err = -1; | |
698 | goto out_child; | |
699 | } | |
700 | } | |
701 | ||
d20deb64 | 702 | if (hits == rec->samples) { |
6dcf45ef | 703 | if (done || draining) |
649c48a9 | 704 | break; |
f66a889d | 705 | err = perf_evlist__poll(rec->evlist, -1); |
a515114f JO |
706 | /* |
707 | * Propagate error, only if there's any. Ignore positive | |
708 | * number of returned events and interrupt error. | |
709 | */ | |
710 | if (err > 0 || (err < 0 && errno == EINTR)) | |
45604710 | 711 | err = 0; |
8b412664 | 712 | waking++; |
6dcf45ef ACM |
713 | |
714 | if (perf_evlist__filter_pollfd(rec->evlist, POLLERR | POLLHUP) == 0) | |
715 | draining = true; | |
8b412664 PZ |
716 | } |
717 | ||
774cb499 JO |
718 | /* |
719 | * When perf is starting the traced process, at the end events | |
720 | * die with the process and we wait for that. Thus no need to | |
721 | * disable events in this case. | |
722 | */ | |
602ad878 | 723 | if (done && !disabled && !target__none(&opts->target)) { |
2dd6d8a1 | 724 | auxtrace_snapshot_enabled = 0; |
3e2be2da | 725 | perf_evlist__disable(rec->evlist); |
2711926a JO |
726 | disabled = true; |
727 | } | |
de9ac07b | 728 | } |
2dd6d8a1 | 729 | auxtrace_snapshot_enabled = 0; |
de9ac07b | 730 | |
f33cbe72 | 731 | if (forks && workload_exec_errno) { |
35550da3 | 732 | char msg[STRERR_BUFSIZE]; |
f33cbe72 ACM |
733 | const char *emsg = strerror_r(workload_exec_errno, msg, sizeof(msg)); |
734 | pr_err("Workload failed: %s\n", emsg); | |
735 | err = -1; | |
45604710 | 736 | goto out_child; |
f33cbe72 ACM |
737 | } |
738 | ||
e3d59112 | 739 | if (!quiet) |
45604710 | 740 | fprintf(stderr, "[ perf record: Woken up %ld times to write data ]\n", waking); |
b44308f5 | 741 | |
45604710 NK |
742 | out_child: |
743 | if (forks) { | |
744 | int exit_status; | |
addc2785 | 745 | |
45604710 NK |
746 | if (!child_finished) |
747 | kill(rec->evlist->workload.pid, SIGTERM); | |
748 | ||
749 | wait(&exit_status); | |
750 | ||
751 | if (err < 0) | |
752 | status = err; | |
753 | else if (WIFEXITED(exit_status)) | |
754 | status = WEXITSTATUS(exit_status); | |
755 | else if (WIFSIGNALED(exit_status)) | |
756 | signr = WTERMSIG(exit_status); | |
757 | } else | |
758 | status = err; | |
759 | ||
e3d59112 NK |
760 | /* this will be recalculated during process_buildids() */ |
761 | rec->samples = 0; | |
762 | ||
45604710 NK |
763 | if (!err && !file->is_pipe) { |
764 | rec->session->header.data_size += rec->bytes_written; | |
457ae94a | 765 | file->size = lseek(perf_data_file__fd(file), 0, SEEK_CUR); |
45604710 | 766 | |
cd10b289 | 767 | if (!rec->no_buildid) { |
45604710 | 768 | process_buildids(rec); |
6156681b NK |
769 | |
770 | if (rec->buildid_all) | |
cd10b289 AH |
771 | dsos__hit_all(rec->session); |
772 | } | |
42aa276f | 773 | perf_session__write_header(rec->session, rec->evlist, fd, true); |
45604710 | 774 | } |
39d17dac | 775 | |
e3d59112 NK |
776 | if (!err && !quiet) { |
777 | char samples[128]; | |
778 | ||
ef149c25 | 779 | if (rec->samples && !rec->opts.full_auxtrace) |
e3d59112 NK |
780 | scnprintf(samples, sizeof(samples), |
781 | " (%" PRIu64 " samples)", rec->samples); | |
782 | else | |
783 | samples[0] = '\0'; | |
784 | ||
785 | fprintf(stderr, "[ perf record: Captured and wrote %.3f MB %s%s ]\n", | |
786 | perf_data_file__size(file) / 1024.0 / 1024.0, | |
787 | file->path, samples); | |
788 | } | |
789 | ||
39d17dac ACM |
790 | out_delete_session: |
791 | perf_session__delete(session); | |
45604710 | 792 | return status; |
de9ac07b | 793 | } |
0e9b20b8 | 794 | |
72a128aa | 795 | static void callchain_debug(void) |
09b0fd45 | 796 | { |
aad2b21c | 797 | static const char *str[CALLCHAIN_MAX] = { "NONE", "FP", "DWARF", "LBR" }; |
a601fdff | 798 | |
72a128aa | 799 | pr_debug("callchain: type %s\n", str[callchain_param.record_mode]); |
26d33022 | 800 | |
72a128aa | 801 | if (callchain_param.record_mode == CALLCHAIN_DWARF) |
09b0fd45 | 802 | pr_debug("callchain: stack dump size %d\n", |
72a128aa | 803 | callchain_param.dump_size); |
09b0fd45 JO |
804 | } |
805 | ||
c421e80b | 806 | int record_parse_callchain_opt(const struct option *opt, |
09b0fd45 JO |
807 | const char *arg, |
808 | int unset) | |
809 | { | |
09b0fd45 | 810 | int ret; |
c421e80b | 811 | struct record_opts *record = (struct record_opts *)opt->value; |
09b0fd45 | 812 | |
c421e80b | 813 | record->callgraph_set = true; |
72a128aa | 814 | callchain_param.enabled = !unset; |
eb853e80 | 815 | |
09b0fd45 JO |
816 | /* --no-call-graph */ |
817 | if (unset) { | |
72a128aa | 818 | callchain_param.record_mode = CALLCHAIN_NONE; |
09b0fd45 JO |
819 | pr_debug("callchain: disabled\n"); |
820 | return 0; | |
821 | } | |
822 | ||
c3a6a8c4 | 823 | ret = parse_callchain_record_opt(arg, &callchain_param); |
5c0cf224 JO |
824 | if (!ret) { |
825 | /* Enable data address sampling for DWARF unwind. */ | |
826 | if (callchain_param.record_mode == CALLCHAIN_DWARF) | |
827 | record->sample_address = true; | |
72a128aa | 828 | callchain_debug(); |
5c0cf224 | 829 | } |
26d33022 JO |
830 | |
831 | return ret; | |
832 | } | |
833 | ||
c421e80b | 834 | int record_callchain_opt(const struct option *opt, |
09b0fd45 JO |
835 | const char *arg __maybe_unused, |
836 | int unset __maybe_unused) | |
837 | { | |
c421e80b KL |
838 | struct record_opts *record = (struct record_opts *)opt->value; |
839 | ||
840 | record->callgraph_set = true; | |
72a128aa | 841 | callchain_param.enabled = true; |
09b0fd45 | 842 | |
72a128aa NK |
843 | if (callchain_param.record_mode == CALLCHAIN_NONE) |
844 | callchain_param.record_mode = CALLCHAIN_FP; | |
eb853e80 | 845 | |
72a128aa | 846 | callchain_debug(); |
09b0fd45 JO |
847 | return 0; |
848 | } | |
849 | ||
eb853e80 JO |
850 | static int perf_record_config(const char *var, const char *value, void *cb) |
851 | { | |
7a29c087 NK |
852 | struct record *rec = cb; |
853 | ||
854 | if (!strcmp(var, "record.build-id")) { | |
855 | if (!strcmp(value, "cache")) | |
856 | rec->no_buildid_cache = false; | |
857 | else if (!strcmp(value, "no-cache")) | |
858 | rec->no_buildid_cache = true; | |
859 | else if (!strcmp(value, "skip")) | |
860 | rec->no_buildid = true; | |
861 | else | |
862 | return -1; | |
863 | return 0; | |
864 | } | |
eb853e80 | 865 | if (!strcmp(var, "record.call-graph")) |
5a2e5e85 | 866 | var = "call-graph.record-mode"; /* fall-through */ |
eb853e80 JO |
867 | |
868 | return perf_default_config(var, value, cb); | |
869 | } | |
870 | ||
814c8c38 PZ |
871 | struct clockid_map { |
872 | const char *name; | |
873 | int clockid; | |
874 | }; | |
875 | ||
876 | #define CLOCKID_MAP(n, c) \ | |
877 | { .name = n, .clockid = (c), } | |
878 | ||
879 | #define CLOCKID_END { .name = NULL, } | |
880 | ||
881 | ||
882 | /* | |
883 | * Add the missing ones, we need to build on many distros... | |
884 | */ | |
885 | #ifndef CLOCK_MONOTONIC_RAW | |
886 | #define CLOCK_MONOTONIC_RAW 4 | |
887 | #endif | |
888 | #ifndef CLOCK_BOOTTIME | |
889 | #define CLOCK_BOOTTIME 7 | |
890 | #endif | |
891 | #ifndef CLOCK_TAI | |
892 | #define CLOCK_TAI 11 | |
893 | #endif | |
894 | ||
895 | static const struct clockid_map clockids[] = { | |
896 | /* available for all events, NMI safe */ | |
897 | CLOCKID_MAP("monotonic", CLOCK_MONOTONIC), | |
898 | CLOCKID_MAP("monotonic_raw", CLOCK_MONOTONIC_RAW), | |
899 | ||
900 | /* available for some events */ | |
901 | CLOCKID_MAP("realtime", CLOCK_REALTIME), | |
902 | CLOCKID_MAP("boottime", CLOCK_BOOTTIME), | |
903 | CLOCKID_MAP("tai", CLOCK_TAI), | |
904 | ||
905 | /* available for the lazy */ | |
906 | CLOCKID_MAP("mono", CLOCK_MONOTONIC), | |
907 | CLOCKID_MAP("raw", CLOCK_MONOTONIC_RAW), | |
908 | CLOCKID_MAP("real", CLOCK_REALTIME), | |
909 | CLOCKID_MAP("boot", CLOCK_BOOTTIME), | |
910 | ||
911 | CLOCKID_END, | |
912 | }; | |
913 | ||
914 | static int parse_clockid(const struct option *opt, const char *str, int unset) | |
915 | { | |
916 | struct record_opts *opts = (struct record_opts *)opt->value; | |
917 | const struct clockid_map *cm; | |
918 | const char *ostr = str; | |
919 | ||
920 | if (unset) { | |
921 | opts->use_clockid = 0; | |
922 | return 0; | |
923 | } | |
924 | ||
925 | /* no arg passed */ | |
926 | if (!str) | |
927 | return 0; | |
928 | ||
929 | /* no setting it twice */ | |
930 | if (opts->use_clockid) | |
931 | return -1; | |
932 | ||
933 | opts->use_clockid = true; | |
934 | ||
935 | /* if its a number, we're done */ | |
936 | if (sscanf(str, "%d", &opts->clockid) == 1) | |
937 | return 0; | |
938 | ||
939 | /* allow a "CLOCK_" prefix to the name */ | |
940 | if (!strncasecmp(str, "CLOCK_", 6)) | |
941 | str += 6; | |
942 | ||
943 | for (cm = clockids; cm->name; cm++) { | |
944 | if (!strcasecmp(str, cm->name)) { | |
945 | opts->clockid = cm->clockid; | |
946 | return 0; | |
947 | } | |
948 | } | |
949 | ||
950 | opts->use_clockid = false; | |
951 | ui__warning("unknown clockid %s, check man page\n", ostr); | |
952 | return -1; | |
953 | } | |
954 | ||
e9db1310 AH |
955 | static int record__parse_mmap_pages(const struct option *opt, |
956 | const char *str, | |
957 | int unset __maybe_unused) | |
958 | { | |
959 | struct record_opts *opts = opt->value; | |
960 | char *s, *p; | |
961 | unsigned int mmap_pages; | |
962 | int ret; | |
963 | ||
964 | if (!str) | |
965 | return -EINVAL; | |
966 | ||
967 | s = strdup(str); | |
968 | if (!s) | |
969 | return -ENOMEM; | |
970 | ||
971 | p = strchr(s, ','); | |
972 | if (p) | |
973 | *p = '\0'; | |
974 | ||
975 | if (*s) { | |
976 | ret = __perf_evlist__parse_mmap_pages(&mmap_pages, s); | |
977 | if (ret) | |
978 | goto out_free; | |
979 | opts->mmap_pages = mmap_pages; | |
980 | } | |
981 | ||
982 | if (!p) { | |
983 | ret = 0; | |
984 | goto out_free; | |
985 | } | |
986 | ||
987 | ret = __perf_evlist__parse_mmap_pages(&mmap_pages, p + 1); | |
988 | if (ret) | |
989 | goto out_free; | |
990 | ||
991 | opts->auxtrace_mmap_pages = mmap_pages; | |
992 | ||
993 | out_free: | |
994 | free(s); | |
995 | return ret; | |
996 | } | |
997 | ||
e5b2c207 | 998 | static const char * const __record_usage[] = { |
9e096753 MG |
999 | "perf record [<options>] [<command>]", |
1000 | "perf record [<options>] -- <command> [<options>]", | |
0e9b20b8 IM |
1001 | NULL |
1002 | }; | |
e5b2c207 | 1003 | const char * const *record_usage = __record_usage; |
0e9b20b8 | 1004 | |
d20deb64 | 1005 | /* |
8c6f45a7 ACM |
1006 | * XXX Ideally would be local to cmd_record() and passed to a record__new |
1007 | * because we need to have access to it in record__exit, that is called | |
d20deb64 ACM |
1008 | * after cmd_record() exits, but since record_options need to be accessible to |
1009 | * builtin-script, leave it here. | |
1010 | * | |
1011 | * At least we don't ouch it in all the other functions here directly. | |
1012 | * | |
1013 | * Just say no to tons of global variables, sigh. | |
1014 | */ | |
8c6f45a7 | 1015 | static struct record record = { |
d20deb64 | 1016 | .opts = { |
8affc2b8 | 1017 | .sample_time = true, |
d20deb64 ACM |
1018 | .mmap_pages = UINT_MAX, |
1019 | .user_freq = UINT_MAX, | |
1020 | .user_interval = ULLONG_MAX, | |
447a6013 | 1021 | .freq = 4000, |
d1cb9fce NK |
1022 | .target = { |
1023 | .uses_mmap = true, | |
3aa5939d | 1024 | .default_per_cpu = true, |
d1cb9fce | 1025 | }, |
9d9cad76 | 1026 | .proc_map_timeout = 500, |
d20deb64 | 1027 | }, |
e3d59112 NK |
1028 | .tool = { |
1029 | .sample = process_sample_event, | |
1030 | .fork = perf_event__process_fork, | |
cca8482c | 1031 | .exit = perf_event__process_exit, |
e3d59112 NK |
1032 | .comm = perf_event__process_comm, |
1033 | .mmap = perf_event__process_mmap, | |
1034 | .mmap2 = perf_event__process_mmap2, | |
cca8482c | 1035 | .ordered_events = true, |
e3d59112 | 1036 | }, |
d20deb64 | 1037 | }; |
7865e817 | 1038 | |
76a26549 NK |
1039 | const char record_callchain_help[] = CALLCHAIN_RECORD_HELP |
1040 | "\n\t\t\t\tDefault: fp"; | |
61eaa3be | 1041 | |
d20deb64 ACM |
1042 | /* |
1043 | * XXX Will stay a global variable till we fix builtin-script.c to stop messing | |
1044 | * with it and switch to use the library functions in perf_evlist that came | |
b4006796 | 1045 | * from builtin-record.c, i.e. use record_opts, |
d20deb64 ACM |
1046 | * perf_evlist__prepare_workload, etc instead of fork+exec'in 'perf record', |
1047 | * using pipes, etc. | |
1048 | */ | |
e5b2c207 | 1049 | struct option __record_options[] = { |
d20deb64 | 1050 | OPT_CALLBACK('e', "event", &record.evlist, "event", |
86847b62 | 1051 | "event selector. use 'perf list' to list available events", |
f120f9d5 | 1052 | parse_events_option), |
d20deb64 | 1053 | OPT_CALLBACK(0, "filter", &record.evlist, "filter", |
c171b552 | 1054 | "event filter", parse_filter), |
4ba1faa1 WN |
1055 | OPT_CALLBACK_NOOPT(0, "exclude-perf", &record.evlist, |
1056 | NULL, "don't record events from perf itself", | |
1057 | exclude_perf), | |
bea03405 | 1058 | OPT_STRING('p', "pid", &record.opts.target.pid, "pid", |
d6d901c2 | 1059 | "record events on existing process id"), |
bea03405 | 1060 | OPT_STRING('t', "tid", &record.opts.target.tid, "tid", |
d6d901c2 | 1061 | "record events on existing thread id"), |
d20deb64 | 1062 | OPT_INTEGER('r', "realtime", &record.realtime_prio, |
0e9b20b8 | 1063 | "collect data with this RT SCHED_FIFO priority"), |
509051ea | 1064 | OPT_BOOLEAN(0, "no-buffering", &record.opts.no_buffering, |
acac03fa | 1065 | "collect data without buffering"), |
d20deb64 | 1066 | OPT_BOOLEAN('R', "raw-samples", &record.opts.raw_samples, |
daac07b2 | 1067 | "collect raw sample records from all opened counters"), |
bea03405 | 1068 | OPT_BOOLEAN('a', "all-cpus", &record.opts.target.system_wide, |
0e9b20b8 | 1069 | "system-wide collection from all CPUs"), |
bea03405 | 1070 | OPT_STRING('C', "cpu", &record.opts.target.cpu_list, "cpu", |
c45c6ea2 | 1071 | "list of cpus to monitor"), |
d20deb64 | 1072 | OPT_U64('c', "count", &record.opts.user_interval, "event period to sample"), |
f5fc1412 | 1073 | OPT_STRING('o', "output", &record.file.path, "file", |
abaff32a | 1074 | "output file name"), |
69e7e5b0 AH |
1075 | OPT_BOOLEAN_SET('i', "no-inherit", &record.opts.no_inherit, |
1076 | &record.opts.no_inherit_set, | |
1077 | "child tasks do not inherit counters"), | |
d20deb64 | 1078 | OPT_UINTEGER('F', "freq", &record.opts.user_freq, "profile at this frequency"), |
e9db1310 AH |
1079 | OPT_CALLBACK('m', "mmap-pages", &record.opts, "pages[,pages]", |
1080 | "number of mmap data pages and AUX area tracing mmap pages", | |
1081 | record__parse_mmap_pages), | |
d20deb64 | 1082 | OPT_BOOLEAN(0, "group", &record.opts.group, |
43bece79 | 1083 | "put the counters into a counter group"), |
09b0fd45 JO |
1084 | OPT_CALLBACK_NOOPT('g', NULL, &record.opts, |
1085 | NULL, "enables call-graph recording" , | |
1086 | &record_callchain_opt), | |
1087 | OPT_CALLBACK(0, "call-graph", &record.opts, | |
76a26549 | 1088 | "record_mode[,record_size]", record_callchain_help, |
09b0fd45 | 1089 | &record_parse_callchain_opt), |
c0555642 | 1090 | OPT_INCR('v', "verbose", &verbose, |
3da297a6 | 1091 | "be more verbose (show counter open errors, etc)"), |
b44308f5 | 1092 | OPT_BOOLEAN('q', "quiet", &quiet, "don't print any message"), |
d20deb64 | 1093 | OPT_BOOLEAN('s', "stat", &record.opts.inherit_stat, |
649c48a9 | 1094 | "per thread counts"), |
56100321 | 1095 | OPT_BOOLEAN('d', "data", &record.opts.sample_address, "Record the sample addresses"), |
3abebc55 AH |
1096 | OPT_BOOLEAN_SET('T', "timestamp", &record.opts.sample_time, |
1097 | &record.opts.sample_time_set, | |
1098 | "Record the sample timestamps"), | |
56100321 | 1099 | OPT_BOOLEAN('P', "period", &record.opts.period, "Record the sample period"), |
d20deb64 | 1100 | OPT_BOOLEAN('n', "no-samples", &record.opts.no_samples, |
649c48a9 | 1101 | "don't sample"), |
d2db9a98 WN |
1102 | OPT_BOOLEAN_SET('N', "no-buildid-cache", &record.no_buildid_cache, |
1103 | &record.no_buildid_cache_set, | |
1104 | "do not update the buildid cache"), | |
1105 | OPT_BOOLEAN_SET('B', "no-buildid", &record.no_buildid, | |
1106 | &record.no_buildid_set, | |
1107 | "do not collect buildids in perf.data"), | |
d20deb64 | 1108 | OPT_CALLBACK('G', "cgroup", &record.evlist, "name", |
023695d9 SE |
1109 | "monitor event in cgroup name only", |
1110 | parse_cgroups), | |
a6205a35 | 1111 | OPT_UINTEGER('D', "delay", &record.opts.initial_delay, |
6619a53e | 1112 | "ms to wait before starting measurement after program start"), |
bea03405 NK |
1113 | OPT_STRING('u', "uid", &record.opts.target.uid_str, "user", |
1114 | "user to profile"), | |
a5aabdac SE |
1115 | |
1116 | OPT_CALLBACK_NOOPT('b', "branch-any", &record.opts.branch_stack, | |
1117 | "branch any", "sample any taken branches", | |
1118 | parse_branch_stack), | |
1119 | ||
1120 | OPT_CALLBACK('j', "branch-filter", &record.opts.branch_stack, | |
1121 | "branch filter mask", "branch stack filter modes", | |
bdfebd84 | 1122 | parse_branch_stack), |
05484298 AK |
1123 | OPT_BOOLEAN('W', "weight", &record.opts.sample_weight, |
1124 | "sample by weight (on special events only)"), | |
475eeab9 AK |
1125 | OPT_BOOLEAN(0, "transaction", &record.opts.sample_transaction, |
1126 | "sample transaction flags (special events only)"), | |
3aa5939d AH |
1127 | OPT_BOOLEAN(0, "per-thread", &record.opts.target.per_thread, |
1128 | "use per-thread mmaps"), | |
bcc84ec6 SE |
1129 | OPT_CALLBACK_OPTARG('I', "intr-regs", &record.opts.sample_intr_regs, NULL, "any register", |
1130 | "sample selected machine registers on interrupt," | |
1131 | " use -I ? to list register names", parse_regs), | |
85c273d2 AK |
1132 | OPT_BOOLEAN(0, "running-time", &record.opts.running_time, |
1133 | "Record running/enabled time of read (:S) events"), | |
814c8c38 PZ |
1134 | OPT_CALLBACK('k', "clockid", &record.opts, |
1135 | "clockid", "clockid to use for events, see clock_gettime()", | |
1136 | parse_clockid), | |
2dd6d8a1 AH |
1137 | OPT_STRING_OPTARG('S', "snapshot", &record.opts.auxtrace_snapshot_opts, |
1138 | "opts", "AUX area tracing Snapshot Mode", ""), | |
9d9cad76 KL |
1139 | OPT_UINTEGER(0, "proc-map-timeout", &record.opts.proc_map_timeout, |
1140 | "per thread proc mmap processing timeout in ms"), | |
b757bb09 AH |
1141 | OPT_BOOLEAN(0, "switch-events", &record.opts.record_switch_events, |
1142 | "Record context switch events"), | |
71dc2326 WN |
1143 | OPT_STRING(0, "clang-path", &llvm_param.clang_path, "clang path", |
1144 | "clang binary to use for compiling BPF scriptlets"), | |
1145 | OPT_STRING(0, "clang-opt", &llvm_param.clang_opt, "clang options", | |
1146 | "options passed to clang when compiling BPF scriptlets"), | |
7efe0e03 HK |
1147 | OPT_STRING(0, "vmlinux", &symbol_conf.vmlinux_name, |
1148 | "file", "vmlinux pathname"), | |
6156681b NK |
1149 | OPT_BOOLEAN(0, "buildid-all", &record.buildid_all, |
1150 | "Record build-id of all DSOs regardless of hits"), | |
0e9b20b8 IM |
1151 | OPT_END() |
1152 | }; | |
1153 | ||
e5b2c207 NK |
1154 | struct option *record_options = __record_options; |
1155 | ||
1d037ca1 | 1156 | int cmd_record(int argc, const char **argv, const char *prefix __maybe_unused) |
0e9b20b8 | 1157 | { |
ef149c25 | 1158 | int err; |
8c6f45a7 | 1159 | struct record *rec = &record; |
16ad2ffb | 1160 | char errbuf[BUFSIZ]; |
0e9b20b8 | 1161 | |
48e1cab1 WN |
1162 | #ifndef HAVE_LIBBPF_SUPPORT |
1163 | # define set_nobuild(s, l, c) set_option_nobuild(record_options, s, l, "NO_LIBBPF=1", c) | |
1164 | set_nobuild('\0', "clang-path", true); | |
1165 | set_nobuild('\0', "clang-opt", true); | |
1166 | # undef set_nobuild | |
7efe0e03 HK |
1167 | #endif |
1168 | ||
1169 | #ifndef HAVE_BPF_PROLOGUE | |
1170 | # if !defined (HAVE_DWARF_SUPPORT) | |
1171 | # define REASON "NO_DWARF=1" | |
1172 | # elif !defined (HAVE_LIBBPF_SUPPORT) | |
1173 | # define REASON "NO_LIBBPF=1" | |
1174 | # else | |
1175 | # define REASON "this architecture doesn't support BPF prologue" | |
1176 | # endif | |
1177 | # define set_nobuild(s, l, c) set_option_nobuild(record_options, s, l, REASON, c) | |
1178 | set_nobuild('\0', "vmlinux", true); | |
1179 | # undef set_nobuild | |
1180 | # undef REASON | |
48e1cab1 WN |
1181 | #endif |
1182 | ||
3e2be2da ACM |
1183 | rec->evlist = perf_evlist__new(); |
1184 | if (rec->evlist == NULL) | |
361c99a6 ACM |
1185 | return -ENOMEM; |
1186 | ||
eb853e80 JO |
1187 | perf_config(perf_record_config, rec); |
1188 | ||
bca647aa | 1189 | argc = parse_options(argc, argv, record_options, record_usage, |
655000e7 | 1190 | PARSE_OPT_STOP_AT_NON_OPTION); |
602ad878 | 1191 | if (!argc && target__none(&rec->opts.target)) |
bca647aa | 1192 | usage_with_options(record_usage, record_options); |
0e9b20b8 | 1193 | |
bea03405 | 1194 | if (nr_cgroups && !rec->opts.target.system_wide) { |
c7118369 NK |
1195 | usage_with_options_msg(record_usage, record_options, |
1196 | "cgroup monitoring only available in system-wide mode"); | |
1197 | ||
023695d9 | 1198 | } |
b757bb09 AH |
1199 | if (rec->opts.record_switch_events && |
1200 | !perf_can_record_switch_events()) { | |
c7118369 NK |
1201 | ui__error("kernel does not support recording context switch events\n"); |
1202 | parse_options_usage(record_usage, record_options, "switch-events", 0); | |
1203 | return -EINVAL; | |
b757bb09 | 1204 | } |
023695d9 | 1205 | |
ef149c25 AH |
1206 | if (!rec->itr) { |
1207 | rec->itr = auxtrace_record__init(rec->evlist, &err); | |
1208 | if (err) | |
1209 | return err; | |
1210 | } | |
1211 | ||
2dd6d8a1 AH |
1212 | err = auxtrace_parse_snapshot_options(rec->itr, &rec->opts, |
1213 | rec->opts.auxtrace_snapshot_opts); | |
1214 | if (err) | |
1215 | return err; | |
1216 | ||
ef149c25 AH |
1217 | err = -ENOMEM; |
1218 | ||
0a7e6d1b | 1219 | symbol__init(NULL); |
baa2f6ce | 1220 | |
ec80fde7 | 1221 | if (symbol_conf.kptr_restrict) |
646aaea6 ACM |
1222 | pr_warning( |
1223 | "WARNING: Kernel address maps (/proc/{kallsyms,modules}) are restricted,\n" | |
1224 | "check /proc/sys/kernel/kptr_restrict.\n\n" | |
1225 | "Samples in kernel functions may not be resolved if a suitable vmlinux\n" | |
1226 | "file is not found in the buildid cache or in the vmlinux path.\n\n" | |
1227 | "Samples in kernel modules won't be resolved at all.\n\n" | |
1228 | "If some relocation was applied (e.g. kexec) symbols may be misresolved\n" | |
1229 | "even with a suitable vmlinux or kallsyms file.\n\n"); | |
ec80fde7 | 1230 | |
d20deb64 | 1231 | if (rec->no_buildid_cache || rec->no_buildid) |
a1ac1d3c | 1232 | disable_buildid_cache(); |
655000e7 | 1233 | |
3e2be2da ACM |
1234 | if (rec->evlist->nr_entries == 0 && |
1235 | perf_evlist__add_default(rec->evlist) < 0) { | |
69aad6f1 ACM |
1236 | pr_err("Not enough memory for event selector list\n"); |
1237 | goto out_symbol_exit; | |
bbd36e5e | 1238 | } |
0e9b20b8 | 1239 | |
69e7e5b0 AH |
1240 | if (rec->opts.target.tid && !rec->opts.no_inherit_set) |
1241 | rec->opts.no_inherit = true; | |
1242 | ||
602ad878 | 1243 | err = target__validate(&rec->opts.target); |
16ad2ffb | 1244 | if (err) { |
602ad878 | 1245 | target__strerror(&rec->opts.target, err, errbuf, BUFSIZ); |
16ad2ffb NK |
1246 | ui__warning("%s", errbuf); |
1247 | } | |
1248 | ||
602ad878 | 1249 | err = target__parse_uid(&rec->opts.target); |
16ad2ffb NK |
1250 | if (err) { |
1251 | int saved_errno = errno; | |
4bd0f2d2 | 1252 | |
602ad878 | 1253 | target__strerror(&rec->opts.target, err, errbuf, BUFSIZ); |
3780f488 | 1254 | ui__error("%s", errbuf); |
16ad2ffb NK |
1255 | |
1256 | err = -saved_errno; | |
8fa60e1f | 1257 | goto out_symbol_exit; |
16ad2ffb | 1258 | } |
0d37aa34 | 1259 | |
16ad2ffb | 1260 | err = -ENOMEM; |
3e2be2da | 1261 | if (perf_evlist__create_maps(rec->evlist, &rec->opts.target) < 0) |
dd7927f4 | 1262 | usage_with_options(record_usage, record_options); |
69aad6f1 | 1263 | |
ef149c25 AH |
1264 | err = auxtrace_record__options(rec->itr, rec->evlist, &rec->opts); |
1265 | if (err) | |
1266 | goto out_symbol_exit; | |
1267 | ||
6156681b NK |
1268 | /* |
1269 | * We take all buildids when the file contains | |
1270 | * AUX area tracing data because we do not decode the | |
1271 | * trace because it would take too long. | |
1272 | */ | |
1273 | if (rec->opts.full_auxtrace) | |
1274 | rec->buildid_all = true; | |
1275 | ||
b4006796 | 1276 | if (record_opts__config(&rec->opts)) { |
39d17dac | 1277 | err = -EINVAL; |
03ad9747 | 1278 | goto out_symbol_exit; |
7e4ff9e3 MG |
1279 | } |
1280 | ||
d20deb64 | 1281 | err = __cmd_record(&record, argc, argv); |
d65a458b | 1282 | out_symbol_exit: |
45604710 | 1283 | perf_evlist__delete(rec->evlist); |
d65a458b | 1284 | symbol__exit(); |
ef149c25 | 1285 | auxtrace_record__free(rec->itr); |
39d17dac | 1286 | return err; |
0e9b20b8 | 1287 | } |
2dd6d8a1 AH |
1288 | |
1289 | static void snapshot_sig_handler(int sig __maybe_unused) | |
1290 | { | |
1291 | if (!auxtrace_snapshot_enabled) | |
1292 | return; | |
1293 | auxtrace_snapshot_enabled = 0; | |
1294 | auxtrace_snapshot_err = auxtrace_record__snapshot_start(record.itr); | |
1295 | auxtrace_record__snapshot_started = 1; | |
1296 | } |