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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" |
8690a2a7 | 35 | #include "util/bpf-loader.h" |
7c6a1c65 | 36 | |
97124d5e | 37 | #include <unistd.h> |
de9ac07b | 38 | #include <sched.h> |
a41794cd | 39 | #include <sys/mman.h> |
de9ac07b | 40 | |
78da39fa | 41 | |
8c6f45a7 | 42 | struct record { |
45694aa7 | 43 | struct perf_tool tool; |
b4006796 | 44 | struct record_opts opts; |
d20deb64 | 45 | u64 bytes_written; |
f5fc1412 | 46 | struct perf_data_file file; |
ef149c25 | 47 | struct auxtrace_record *itr; |
d20deb64 ACM |
48 | struct perf_evlist *evlist; |
49 | struct perf_session *session; | |
50 | const char *progname; | |
d20deb64 | 51 | int realtime_prio; |
d20deb64 | 52 | bool no_buildid; |
d2db9a98 | 53 | bool no_buildid_set; |
d20deb64 | 54 | bool no_buildid_cache; |
d2db9a98 | 55 | bool no_buildid_cache_set; |
6156681b | 56 | bool buildid_all; |
9f065194 | 57 | unsigned long long samples; |
0f82ebc4 | 58 | }; |
a21ca2ca | 59 | |
8c6f45a7 | 60 | static int record__write(struct record *rec, void *bf, size_t size) |
f5970550 | 61 | { |
cf8b2e69 | 62 | if (perf_data_file__write(rec->session->file, bf, size) < 0) { |
50a9b868 JO |
63 | pr_err("failed to write perf data, error: %m\n"); |
64 | return -1; | |
f5970550 | 65 | } |
8d3eca20 | 66 | |
cf8b2e69 | 67 | rec->bytes_written += size; |
8d3eca20 | 68 | return 0; |
f5970550 PZ |
69 | } |
70 | ||
45694aa7 | 71 | static int process_synthesized_event(struct perf_tool *tool, |
d20deb64 | 72 | union perf_event *event, |
1d037ca1 IT |
73 | struct perf_sample *sample __maybe_unused, |
74 | struct machine *machine __maybe_unused) | |
234fbbf5 | 75 | { |
8c6f45a7 ACM |
76 | struct record *rec = container_of(tool, struct record, tool); |
77 | return record__write(rec, event, event->header.size); | |
234fbbf5 ACM |
78 | } |
79 | ||
e5685730 | 80 | static int record__mmap_read(struct record *rec, int idx) |
de9ac07b | 81 | { |
e5685730 | 82 | struct perf_mmap *md = &rec->evlist->mmap[idx]; |
7b8283b5 DA |
83 | u64 head = perf_mmap__read_head(md); |
84 | u64 old = md->prev; | |
918512b4 | 85 | unsigned char *data = md->base + page_size; |
de9ac07b PZ |
86 | unsigned long size; |
87 | void *buf; | |
8d3eca20 | 88 | int rc = 0; |
de9ac07b | 89 | |
dc82009a | 90 | if (old == head) |
8d3eca20 | 91 | return 0; |
dc82009a | 92 | |
d20deb64 | 93 | rec->samples++; |
de9ac07b PZ |
94 | |
95 | size = head - old; | |
96 | ||
97 | if ((old & md->mask) + size != (head & md->mask)) { | |
98 | buf = &data[old & md->mask]; | |
99 | size = md->mask + 1 - (old & md->mask); | |
100 | old += size; | |
021e9f47 | 101 | |
8c6f45a7 | 102 | if (record__write(rec, buf, size) < 0) { |
8d3eca20 DA |
103 | rc = -1; |
104 | goto out; | |
105 | } | |
de9ac07b PZ |
106 | } |
107 | ||
108 | buf = &data[old & md->mask]; | |
109 | size = head - old; | |
110 | old += size; | |
021e9f47 | 111 | |
8c6f45a7 | 112 | if (record__write(rec, buf, size) < 0) { |
8d3eca20 DA |
113 | rc = -1; |
114 | goto out; | |
115 | } | |
de9ac07b PZ |
116 | |
117 | md->prev = old; | |
e5685730 | 118 | perf_evlist__mmap_consume(rec->evlist, idx); |
8d3eca20 DA |
119 | out: |
120 | return rc; | |
de9ac07b PZ |
121 | } |
122 | ||
2dd6d8a1 AH |
123 | static volatile int done; |
124 | static volatile int signr = -1; | |
125 | static volatile int child_finished; | |
126 | static volatile int auxtrace_snapshot_enabled; | |
127 | static volatile int auxtrace_snapshot_err; | |
128 | static volatile int auxtrace_record__snapshot_started; | |
129 | ||
130 | static void sig_handler(int sig) | |
131 | { | |
132 | if (sig == SIGCHLD) | |
133 | child_finished = 1; | |
134 | else | |
135 | signr = sig; | |
136 | ||
137 | done = 1; | |
138 | } | |
139 | ||
140 | static void record__sig_exit(void) | |
141 | { | |
142 | if (signr == -1) | |
143 | return; | |
144 | ||
145 | signal(signr, SIG_DFL); | |
146 | raise(signr); | |
147 | } | |
148 | ||
e31f0d01 AH |
149 | #ifdef HAVE_AUXTRACE_SUPPORT |
150 | ||
ef149c25 AH |
151 | static int record__process_auxtrace(struct perf_tool *tool, |
152 | union perf_event *event, void *data1, | |
153 | size_t len1, void *data2, size_t len2) | |
154 | { | |
155 | struct record *rec = container_of(tool, struct record, tool); | |
99fa2984 | 156 | struct perf_data_file *file = &rec->file; |
ef149c25 AH |
157 | size_t padding; |
158 | u8 pad[8] = {0}; | |
159 | ||
99fa2984 AH |
160 | if (!perf_data_file__is_pipe(file)) { |
161 | off_t file_offset; | |
162 | int fd = perf_data_file__fd(file); | |
163 | int err; | |
164 | ||
165 | file_offset = lseek(fd, 0, SEEK_CUR); | |
166 | if (file_offset == -1) | |
167 | return -1; | |
168 | err = auxtrace_index__auxtrace_event(&rec->session->auxtrace_index, | |
169 | event, file_offset); | |
170 | if (err) | |
171 | return err; | |
172 | } | |
173 | ||
ef149c25 AH |
174 | /* event.auxtrace.size includes padding, see __auxtrace_mmap__read() */ |
175 | padding = (len1 + len2) & 7; | |
176 | if (padding) | |
177 | padding = 8 - padding; | |
178 | ||
179 | record__write(rec, event, event->header.size); | |
180 | record__write(rec, data1, len1); | |
181 | if (len2) | |
182 | record__write(rec, data2, len2); | |
183 | record__write(rec, &pad, padding); | |
184 | ||
185 | return 0; | |
186 | } | |
187 | ||
188 | static int record__auxtrace_mmap_read(struct record *rec, | |
189 | struct auxtrace_mmap *mm) | |
190 | { | |
191 | int ret; | |
192 | ||
193 | ret = auxtrace_mmap__read(mm, rec->itr, &rec->tool, | |
194 | record__process_auxtrace); | |
195 | if (ret < 0) | |
196 | return ret; | |
197 | ||
198 | if (ret) | |
199 | rec->samples++; | |
200 | ||
201 | return 0; | |
202 | } | |
203 | ||
2dd6d8a1 AH |
204 | static int record__auxtrace_mmap_read_snapshot(struct record *rec, |
205 | struct auxtrace_mmap *mm) | |
206 | { | |
207 | int ret; | |
208 | ||
209 | ret = auxtrace_mmap__read_snapshot(mm, rec->itr, &rec->tool, | |
210 | record__process_auxtrace, | |
211 | rec->opts.auxtrace_snapshot_size); | |
212 | if (ret < 0) | |
213 | return ret; | |
214 | ||
215 | if (ret) | |
216 | rec->samples++; | |
217 | ||
218 | return 0; | |
219 | } | |
220 | ||
221 | static int record__auxtrace_read_snapshot_all(struct record *rec) | |
222 | { | |
223 | int i; | |
224 | int rc = 0; | |
225 | ||
226 | for (i = 0; i < rec->evlist->nr_mmaps; i++) { | |
227 | struct auxtrace_mmap *mm = | |
228 | &rec->evlist->mmap[i].auxtrace_mmap; | |
229 | ||
230 | if (!mm->base) | |
231 | continue; | |
232 | ||
233 | if (record__auxtrace_mmap_read_snapshot(rec, mm) != 0) { | |
234 | rc = -1; | |
235 | goto out; | |
236 | } | |
237 | } | |
238 | out: | |
239 | return rc; | |
240 | } | |
241 | ||
242 | static void record__read_auxtrace_snapshot(struct record *rec) | |
243 | { | |
244 | pr_debug("Recording AUX area tracing snapshot\n"); | |
245 | if (record__auxtrace_read_snapshot_all(rec) < 0) { | |
246 | auxtrace_snapshot_err = -1; | |
247 | } else { | |
248 | auxtrace_snapshot_err = auxtrace_record__snapshot_finish(rec->itr); | |
249 | if (!auxtrace_snapshot_err) | |
250 | auxtrace_snapshot_enabled = 1; | |
251 | } | |
252 | } | |
253 | ||
e31f0d01 AH |
254 | #else |
255 | ||
256 | static inline | |
257 | int record__auxtrace_mmap_read(struct record *rec __maybe_unused, | |
258 | struct auxtrace_mmap *mm __maybe_unused) | |
259 | { | |
260 | return 0; | |
261 | } | |
262 | ||
2dd6d8a1 AH |
263 | static inline |
264 | void record__read_auxtrace_snapshot(struct record *rec __maybe_unused) | |
de9ac07b | 265 | { |
f7b7c26e PZ |
266 | } |
267 | ||
2dd6d8a1 AH |
268 | static inline |
269 | int auxtrace_record__snapshot_start(struct auxtrace_record *itr __maybe_unused) | |
f7b7c26e | 270 | { |
2dd6d8a1 | 271 | return 0; |
de9ac07b PZ |
272 | } |
273 | ||
2dd6d8a1 AH |
274 | #endif |
275 | ||
8c6f45a7 | 276 | static int record__open(struct record *rec) |
dd7927f4 | 277 | { |
56e52e85 | 278 | char msg[512]; |
6a4bb04c | 279 | struct perf_evsel *pos; |
d20deb64 ACM |
280 | struct perf_evlist *evlist = rec->evlist; |
281 | struct perf_session *session = rec->session; | |
b4006796 | 282 | struct record_opts *opts = &rec->opts; |
8d3eca20 | 283 | int rc = 0; |
dd7927f4 | 284 | |
f77a9518 | 285 | perf_evlist__config(evlist, opts); |
cac21425 | 286 | |
0050f7aa | 287 | evlist__for_each(evlist, pos) { |
dd7927f4 | 288 | try_again: |
d988d5ee | 289 | if (perf_evsel__open(pos, pos->cpus, pos->threads) < 0) { |
56e52e85 | 290 | if (perf_evsel__fallback(pos, errno, msg, sizeof(msg))) { |
d6d901c2 | 291 | if (verbose) |
c0a54341 | 292 | ui__warning("%s\n", msg); |
d6d901c2 ZY |
293 | goto try_again; |
294 | } | |
ca6a4258 | 295 | |
56e52e85 ACM |
296 | rc = -errno; |
297 | perf_evsel__open_strerror(pos, &opts->target, | |
298 | errno, msg, sizeof(msg)); | |
299 | ui__error("%s\n", msg); | |
8d3eca20 | 300 | goto out; |
c171b552 LZ |
301 | } |
302 | } | |
a43d3f08 | 303 | |
23d4aad4 ACM |
304 | if (perf_evlist__apply_filters(evlist, &pos)) { |
305 | error("failed to set filter \"%s\" on event %s with %d (%s)\n", | |
306 | pos->filter, perf_evsel__name(pos), errno, | |
35550da3 | 307 | strerror_r(errno, msg, sizeof(msg))); |
8d3eca20 DA |
308 | rc = -1; |
309 | goto out; | |
0a102479 FW |
310 | } |
311 | ||
ef149c25 | 312 | if (perf_evlist__mmap_ex(evlist, opts->mmap_pages, false, |
2dd6d8a1 AH |
313 | opts->auxtrace_mmap_pages, |
314 | opts->auxtrace_snapshot_mode) < 0) { | |
8d3eca20 DA |
315 | if (errno == EPERM) { |
316 | pr_err("Permission error mapping pages.\n" | |
317 | "Consider increasing " | |
318 | "/proc/sys/kernel/perf_event_mlock_kb,\n" | |
319 | "or try again with a smaller value of -m/--mmap_pages.\n" | |
ef149c25 AH |
320 | "(current value: %u,%u)\n", |
321 | opts->mmap_pages, opts->auxtrace_mmap_pages); | |
8d3eca20 | 322 | rc = -errno; |
8d3eca20 | 323 | } else { |
35550da3 MH |
324 | pr_err("failed to mmap with %d (%s)\n", errno, |
325 | strerror_r(errno, msg, sizeof(msg))); | |
8d3eca20 DA |
326 | rc = -errno; |
327 | } | |
328 | goto out; | |
18e60939 | 329 | } |
0a27d7f9 | 330 | |
563aecb2 | 331 | session->evlist = evlist; |
7b56cce2 | 332 | perf_session__set_id_hdr_size(session); |
8d3eca20 DA |
333 | out: |
334 | return rc; | |
16c8a109 PZ |
335 | } |
336 | ||
e3d59112 NK |
337 | static int process_sample_event(struct perf_tool *tool, |
338 | union perf_event *event, | |
339 | struct perf_sample *sample, | |
340 | struct perf_evsel *evsel, | |
341 | struct machine *machine) | |
342 | { | |
343 | struct record *rec = container_of(tool, struct record, tool); | |
344 | ||
345 | rec->samples++; | |
346 | ||
347 | return build_id__mark_dso_hit(tool, event, sample, evsel, machine); | |
348 | } | |
349 | ||
8c6f45a7 | 350 | static int process_buildids(struct record *rec) |
6122e4e4 | 351 | { |
f5fc1412 JO |
352 | struct perf_data_file *file = &rec->file; |
353 | struct perf_session *session = rec->session; | |
6122e4e4 | 354 | |
457ae94a | 355 | if (file->size == 0) |
9f591fd7 ACM |
356 | return 0; |
357 | ||
00dc8657 NK |
358 | /* |
359 | * During this process, it'll load kernel map and replace the | |
360 | * dso->long_name to a real pathname it found. In this case | |
361 | * we prefer the vmlinux path like | |
362 | * /lib/modules/3.16.4/build/vmlinux | |
363 | * | |
364 | * rather than build-id path (in debug directory). | |
365 | * $HOME/.debug/.build-id/f0/6e17aa50adf4d00b88925e03775de107611551 | |
366 | */ | |
367 | symbol_conf.ignore_vmlinux_buildid = true; | |
368 | ||
6156681b NK |
369 | /* |
370 | * If --buildid-all is given, it marks all DSO regardless of hits, | |
371 | * so no need to process samples. | |
372 | */ | |
373 | if (rec->buildid_all) | |
374 | rec->tool.sample = NULL; | |
375 | ||
b7b61cbe | 376 | return perf_session__process_events(session); |
6122e4e4 ACM |
377 | } |
378 | ||
8115d60c | 379 | static void perf_event__synthesize_guest_os(struct machine *machine, void *data) |
a1645ce1 ZY |
380 | { |
381 | int err; | |
45694aa7 | 382 | struct perf_tool *tool = data; |
a1645ce1 ZY |
383 | /* |
384 | *As for guest kernel when processing subcommand record&report, | |
385 | *we arrange module mmap prior to guest kernel mmap and trigger | |
386 | *a preload dso because default guest module symbols are loaded | |
387 | *from guest kallsyms instead of /lib/modules/XXX/XXX. This | |
388 | *method is used to avoid symbol missing when the first addr is | |
389 | *in module instead of in guest kernel. | |
390 | */ | |
45694aa7 | 391 | err = perf_event__synthesize_modules(tool, process_synthesized_event, |
743eb868 | 392 | machine); |
a1645ce1 ZY |
393 | if (err < 0) |
394 | pr_err("Couldn't record guest kernel [%d]'s reference" | |
23346f21 | 395 | " relocation symbol.\n", machine->pid); |
a1645ce1 | 396 | |
a1645ce1 ZY |
397 | /* |
398 | * We use _stext for guest kernel because guest kernel's /proc/kallsyms | |
399 | * have no _text sometimes. | |
400 | */ | |
45694aa7 | 401 | err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event, |
0ae617be | 402 | machine); |
a1645ce1 ZY |
403 | if (err < 0) |
404 | pr_err("Couldn't record guest kernel [%d]'s reference" | |
23346f21 | 405 | " relocation symbol.\n", machine->pid); |
a1645ce1 ZY |
406 | } |
407 | ||
98402807 FW |
408 | static struct perf_event_header finished_round_event = { |
409 | .size = sizeof(struct perf_event_header), | |
410 | .type = PERF_RECORD_FINISHED_ROUND, | |
411 | }; | |
412 | ||
8c6f45a7 | 413 | static int record__mmap_read_all(struct record *rec) |
98402807 | 414 | { |
dcabb507 | 415 | u64 bytes_written = rec->bytes_written; |
0e2e63dd | 416 | int i; |
8d3eca20 | 417 | int rc = 0; |
98402807 | 418 | |
d20deb64 | 419 | for (i = 0; i < rec->evlist->nr_mmaps; i++) { |
ef149c25 AH |
420 | struct auxtrace_mmap *mm = &rec->evlist->mmap[i].auxtrace_mmap; |
421 | ||
8d3eca20 | 422 | if (rec->evlist->mmap[i].base) { |
e5685730 | 423 | if (record__mmap_read(rec, i) != 0) { |
8d3eca20 DA |
424 | rc = -1; |
425 | goto out; | |
426 | } | |
427 | } | |
ef149c25 | 428 | |
2dd6d8a1 | 429 | if (mm->base && !rec->opts.auxtrace_snapshot_mode && |
ef149c25 AH |
430 | record__auxtrace_mmap_read(rec, mm) != 0) { |
431 | rc = -1; | |
432 | goto out; | |
433 | } | |
98402807 FW |
434 | } |
435 | ||
dcabb507 JO |
436 | /* |
437 | * Mark the round finished in case we wrote | |
438 | * at least one event. | |
439 | */ | |
440 | if (bytes_written != rec->bytes_written) | |
441 | rc = record__write(rec, &finished_round_event, sizeof(finished_round_event)); | |
8d3eca20 DA |
442 | |
443 | out: | |
444 | return rc; | |
98402807 FW |
445 | } |
446 | ||
8c6f45a7 | 447 | static void record__init_features(struct record *rec) |
57706abc | 448 | { |
57706abc DA |
449 | struct perf_session *session = rec->session; |
450 | int feat; | |
451 | ||
452 | for (feat = HEADER_FIRST_FEATURE; feat < HEADER_LAST_FEATURE; feat++) | |
453 | perf_header__set_feat(&session->header, feat); | |
454 | ||
455 | if (rec->no_buildid) | |
456 | perf_header__clear_feat(&session->header, HEADER_BUILD_ID); | |
457 | ||
3e2be2da | 458 | if (!have_tracepoints(&rec->evlist->entries)) |
57706abc DA |
459 | perf_header__clear_feat(&session->header, HEADER_TRACING_DATA); |
460 | ||
461 | if (!rec->opts.branch_stack) | |
462 | perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK); | |
ef149c25 AH |
463 | |
464 | if (!rec->opts.full_auxtrace) | |
465 | perf_header__clear_feat(&session->header, HEADER_AUXTRACE); | |
ffa517ad JO |
466 | |
467 | perf_header__clear_feat(&session->header, HEADER_STAT); | |
57706abc DA |
468 | } |
469 | ||
f33cbe72 ACM |
470 | static volatile int workload_exec_errno; |
471 | ||
472 | /* | |
473 | * perf_evlist__prepare_workload will send a SIGUSR1 | |
474 | * if the fork fails, since we asked by setting its | |
475 | * want_signal to true. | |
476 | */ | |
45604710 NK |
477 | static void workload_exec_failed_signal(int signo __maybe_unused, |
478 | siginfo_t *info, | |
f33cbe72 ACM |
479 | void *ucontext __maybe_unused) |
480 | { | |
481 | workload_exec_errno = info->si_value.sival_int; | |
482 | done = 1; | |
f33cbe72 ACM |
483 | child_finished = 1; |
484 | } | |
485 | ||
2dd6d8a1 AH |
486 | static void snapshot_sig_handler(int sig); |
487 | ||
8c6f45a7 | 488 | static int __cmd_record(struct record *rec, int argc, const char **argv) |
16c8a109 | 489 | { |
57706abc | 490 | int err; |
45604710 | 491 | int status = 0; |
8b412664 | 492 | unsigned long waking = 0; |
46be604b | 493 | const bool forks = argc > 0; |
23346f21 | 494 | struct machine *machine; |
45694aa7 | 495 | struct perf_tool *tool = &rec->tool; |
b4006796 | 496 | struct record_opts *opts = &rec->opts; |
f5fc1412 | 497 | struct perf_data_file *file = &rec->file; |
d20deb64 | 498 | struct perf_session *session; |
6dcf45ef | 499 | bool disabled = false, draining = false; |
42aa276f | 500 | int fd; |
de9ac07b | 501 | |
d20deb64 | 502 | rec->progname = argv[0]; |
33e49ea7 | 503 | |
45604710 | 504 | atexit(record__sig_exit); |
f5970550 PZ |
505 | signal(SIGCHLD, sig_handler); |
506 | signal(SIGINT, sig_handler); | |
804f7ac7 | 507 | signal(SIGTERM, sig_handler); |
2dd6d8a1 AH |
508 | if (rec->opts.auxtrace_snapshot_mode) |
509 | signal(SIGUSR2, snapshot_sig_handler); | |
510 | else | |
511 | signal(SIGUSR2, SIG_IGN); | |
f5970550 | 512 | |
b7b61cbe | 513 | session = perf_session__new(file, false, tool); |
94c744b6 | 514 | if (session == NULL) { |
ffa91880 | 515 | pr_err("Perf session creation failed.\n"); |
a9a70bbc ACM |
516 | return -1; |
517 | } | |
518 | ||
42aa276f | 519 | fd = perf_data_file__fd(file); |
d20deb64 ACM |
520 | rec->session = session; |
521 | ||
8c6f45a7 | 522 | record__init_features(rec); |
330aa675 | 523 | |
d4db3f16 | 524 | if (forks) { |
3e2be2da | 525 | err = perf_evlist__prepare_workload(rec->evlist, &opts->target, |
f5fc1412 | 526 | argv, file->is_pipe, |
735f7e0b | 527 | workload_exec_failed_signal); |
35b9d88e ACM |
528 | if (err < 0) { |
529 | pr_err("Couldn't run the workload!\n"); | |
45604710 | 530 | status = err; |
35b9d88e | 531 | goto out_delete_session; |
856e9660 | 532 | } |
856e9660 PZ |
533 | } |
534 | ||
8c6f45a7 | 535 | if (record__open(rec) != 0) { |
8d3eca20 | 536 | err = -1; |
45604710 | 537 | goto out_child; |
8d3eca20 | 538 | } |
de9ac07b | 539 | |
8690a2a7 WN |
540 | err = bpf__apply_obj_config(); |
541 | if (err) { | |
542 | char errbuf[BUFSIZ]; | |
543 | ||
544 | bpf__strerror_apply_obj_config(err, errbuf, sizeof(errbuf)); | |
545 | pr_err("ERROR: Apply config to BPF failed: %s\n", | |
546 | errbuf); | |
547 | goto out_child; | |
548 | } | |
549 | ||
cca8482c AH |
550 | /* |
551 | * Normally perf_session__new would do this, but it doesn't have the | |
552 | * evlist. | |
553 | */ | |
554 | if (rec->tool.ordered_events && !perf_evlist__sample_id_all(rec->evlist)) { | |
555 | pr_warning("WARNING: No sample_id_all support, falling back to unordered processing\n"); | |
556 | rec->tool.ordered_events = false; | |
557 | } | |
558 | ||
3e2be2da | 559 | if (!rec->evlist->nr_groups) |
a8bb559b NK |
560 | perf_header__clear_feat(&session->header, HEADER_GROUP_DESC); |
561 | ||
f5fc1412 | 562 | if (file->is_pipe) { |
42aa276f | 563 | err = perf_header__write_pipe(fd); |
529870e3 | 564 | if (err < 0) |
45604710 | 565 | goto out_child; |
563aecb2 | 566 | } else { |
42aa276f | 567 | err = perf_session__write_header(session, rec->evlist, fd, false); |
d5eed904 | 568 | if (err < 0) |
45604710 | 569 | goto out_child; |
56b03f3c ACM |
570 | } |
571 | ||
d3665498 | 572 | if (!rec->no_buildid |
e20960c0 | 573 | && !perf_header__has_feat(&session->header, HEADER_BUILD_ID)) { |
d3665498 | 574 | pr_err("Couldn't generate buildids. " |
e20960c0 | 575 | "Use --no-buildid to profile anyway.\n"); |
8d3eca20 | 576 | err = -1; |
45604710 | 577 | goto out_child; |
e20960c0 RR |
578 | } |
579 | ||
34ba5122 | 580 | machine = &session->machines.host; |
743eb868 | 581 | |
f5fc1412 | 582 | if (file->is_pipe) { |
45694aa7 | 583 | err = perf_event__synthesize_attrs(tool, session, |
d20deb64 | 584 | process_synthesized_event); |
2c46dbb5 TZ |
585 | if (err < 0) { |
586 | pr_err("Couldn't synthesize attrs.\n"); | |
45604710 | 587 | goto out_child; |
2c46dbb5 | 588 | } |
cd19a035 | 589 | |
3e2be2da | 590 | if (have_tracepoints(&rec->evlist->entries)) { |
63e0c771 TZ |
591 | /* |
592 | * FIXME err <= 0 here actually means that | |
593 | * there were no tracepoints so its not really | |
594 | * an error, just that we don't need to | |
595 | * synthesize anything. We really have to | |
596 | * return this more properly and also | |
597 | * propagate errors that now are calling die() | |
598 | */ | |
42aa276f | 599 | err = perf_event__synthesize_tracing_data(tool, fd, rec->evlist, |
743eb868 | 600 | process_synthesized_event); |
63e0c771 TZ |
601 | if (err <= 0) { |
602 | pr_err("Couldn't record tracing data.\n"); | |
45604710 | 603 | goto out_child; |
63e0c771 | 604 | } |
f34b9001 | 605 | rec->bytes_written += err; |
63e0c771 | 606 | } |
2c46dbb5 TZ |
607 | } |
608 | ||
ef149c25 AH |
609 | if (rec->opts.full_auxtrace) { |
610 | err = perf_event__synthesize_auxtrace_info(rec->itr, tool, | |
611 | session, process_synthesized_event); | |
612 | if (err) | |
613 | goto out_delete_session; | |
614 | } | |
615 | ||
45694aa7 | 616 | err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event, |
0ae617be | 617 | machine); |
c1a3a4b9 ACM |
618 | if (err < 0) |
619 | pr_err("Couldn't record kernel reference relocation symbol\n" | |
620 | "Symbol resolution may be skewed if relocation was used (e.g. kexec).\n" | |
621 | "Check /proc/kallsyms permission or run as root.\n"); | |
b7cece76 | 622 | |
45694aa7 | 623 | err = perf_event__synthesize_modules(tool, process_synthesized_event, |
743eb868 | 624 | machine); |
c1a3a4b9 ACM |
625 | if (err < 0) |
626 | pr_err("Couldn't record kernel module information.\n" | |
627 | "Symbol resolution may be skewed if relocation was used (e.g. kexec).\n" | |
628 | "Check /proc/modules permission or run as root.\n"); | |
629 | ||
7e383de4 | 630 | if (perf_guest) { |
876650e6 ACM |
631 | machines__process_guests(&session->machines, |
632 | perf_event__synthesize_guest_os, tool); | |
7e383de4 | 633 | } |
7c6a1c65 | 634 | |
3e2be2da | 635 | err = __machine__synthesize_threads(machine, tool, &opts->target, rec->evlist->threads, |
9d9cad76 KL |
636 | process_synthesized_event, opts->sample_address, |
637 | opts->proc_map_timeout); | |
8d3eca20 | 638 | if (err != 0) |
45604710 | 639 | goto out_child; |
8d3eca20 | 640 | |
d20deb64 | 641 | if (rec->realtime_prio) { |
de9ac07b PZ |
642 | struct sched_param param; |
643 | ||
d20deb64 | 644 | param.sched_priority = rec->realtime_prio; |
de9ac07b | 645 | if (sched_setscheduler(0, SCHED_FIFO, ¶m)) { |
6beba7ad | 646 | pr_err("Could not set realtime priority.\n"); |
8d3eca20 | 647 | err = -1; |
45604710 | 648 | goto out_child; |
de9ac07b PZ |
649 | } |
650 | } | |
651 | ||
774cb499 JO |
652 | /* |
653 | * When perf is starting the traced process, all the events | |
654 | * (apart from group members) have enable_on_exec=1 set, | |
655 | * so don't spoil it by prematurely enabling them. | |
656 | */ | |
6619a53e | 657 | if (!target__none(&opts->target) && !opts->initial_delay) |
3e2be2da | 658 | perf_evlist__enable(rec->evlist); |
764e16a3 | 659 | |
856e9660 PZ |
660 | /* |
661 | * Let the child rip | |
662 | */ | |
e803cf97 | 663 | if (forks) { |
e5bed564 NK |
664 | union perf_event *event; |
665 | ||
666 | event = malloc(sizeof(event->comm) + machine->id_hdr_size); | |
667 | if (event == NULL) { | |
668 | err = -ENOMEM; | |
669 | goto out_child; | |
670 | } | |
671 | ||
e803cf97 NK |
672 | /* |
673 | * Some H/W events are generated before COMM event | |
674 | * which is emitted during exec(), so perf script | |
675 | * cannot see a correct process name for those events. | |
676 | * Synthesize COMM event to prevent it. | |
677 | */ | |
e5bed564 | 678 | perf_event__synthesize_comm(tool, event, |
e803cf97 NK |
679 | rec->evlist->workload.pid, |
680 | process_synthesized_event, | |
681 | machine); | |
e5bed564 | 682 | free(event); |
e803cf97 | 683 | |
3e2be2da | 684 | perf_evlist__start_workload(rec->evlist); |
e803cf97 | 685 | } |
856e9660 | 686 | |
6619a53e AK |
687 | if (opts->initial_delay) { |
688 | usleep(opts->initial_delay * 1000); | |
689 | perf_evlist__enable(rec->evlist); | |
690 | } | |
691 | ||
2dd6d8a1 | 692 | auxtrace_snapshot_enabled = 1; |
649c48a9 | 693 | for (;;) { |
9f065194 | 694 | unsigned long long hits = rec->samples; |
de9ac07b | 695 | |
8c6f45a7 | 696 | if (record__mmap_read_all(rec) < 0) { |
2dd6d8a1 | 697 | auxtrace_snapshot_enabled = 0; |
8d3eca20 | 698 | err = -1; |
45604710 | 699 | goto out_child; |
8d3eca20 | 700 | } |
de9ac07b | 701 | |
2dd6d8a1 AH |
702 | if (auxtrace_record__snapshot_started) { |
703 | auxtrace_record__snapshot_started = 0; | |
704 | if (!auxtrace_snapshot_err) | |
705 | record__read_auxtrace_snapshot(rec); | |
706 | if (auxtrace_snapshot_err) { | |
707 | pr_err("AUX area tracing snapshot failed\n"); | |
708 | err = -1; | |
709 | goto out_child; | |
710 | } | |
711 | } | |
712 | ||
d20deb64 | 713 | if (hits == rec->samples) { |
6dcf45ef | 714 | if (done || draining) |
649c48a9 | 715 | break; |
f66a889d | 716 | err = perf_evlist__poll(rec->evlist, -1); |
a515114f JO |
717 | /* |
718 | * Propagate error, only if there's any. Ignore positive | |
719 | * number of returned events and interrupt error. | |
720 | */ | |
721 | if (err > 0 || (err < 0 && errno == EINTR)) | |
45604710 | 722 | err = 0; |
8b412664 | 723 | waking++; |
6dcf45ef ACM |
724 | |
725 | if (perf_evlist__filter_pollfd(rec->evlist, POLLERR | POLLHUP) == 0) | |
726 | draining = true; | |
8b412664 PZ |
727 | } |
728 | ||
774cb499 JO |
729 | /* |
730 | * When perf is starting the traced process, at the end events | |
731 | * die with the process and we wait for that. Thus no need to | |
732 | * disable events in this case. | |
733 | */ | |
602ad878 | 734 | if (done && !disabled && !target__none(&opts->target)) { |
2dd6d8a1 | 735 | auxtrace_snapshot_enabled = 0; |
3e2be2da | 736 | perf_evlist__disable(rec->evlist); |
2711926a JO |
737 | disabled = true; |
738 | } | |
de9ac07b | 739 | } |
2dd6d8a1 | 740 | auxtrace_snapshot_enabled = 0; |
de9ac07b | 741 | |
f33cbe72 | 742 | if (forks && workload_exec_errno) { |
35550da3 | 743 | char msg[STRERR_BUFSIZE]; |
f33cbe72 ACM |
744 | const char *emsg = strerror_r(workload_exec_errno, msg, sizeof(msg)); |
745 | pr_err("Workload failed: %s\n", emsg); | |
746 | err = -1; | |
45604710 | 747 | goto out_child; |
f33cbe72 ACM |
748 | } |
749 | ||
e3d59112 | 750 | if (!quiet) |
45604710 | 751 | fprintf(stderr, "[ perf record: Woken up %ld times to write data ]\n", waking); |
b44308f5 | 752 | |
45604710 NK |
753 | out_child: |
754 | if (forks) { | |
755 | int exit_status; | |
addc2785 | 756 | |
45604710 NK |
757 | if (!child_finished) |
758 | kill(rec->evlist->workload.pid, SIGTERM); | |
759 | ||
760 | wait(&exit_status); | |
761 | ||
762 | if (err < 0) | |
763 | status = err; | |
764 | else if (WIFEXITED(exit_status)) | |
765 | status = WEXITSTATUS(exit_status); | |
766 | else if (WIFSIGNALED(exit_status)) | |
767 | signr = WTERMSIG(exit_status); | |
768 | } else | |
769 | status = err; | |
770 | ||
e3d59112 NK |
771 | /* this will be recalculated during process_buildids() */ |
772 | rec->samples = 0; | |
773 | ||
45604710 NK |
774 | if (!err && !file->is_pipe) { |
775 | rec->session->header.data_size += rec->bytes_written; | |
457ae94a | 776 | file->size = lseek(perf_data_file__fd(file), 0, SEEK_CUR); |
45604710 | 777 | |
cd10b289 | 778 | if (!rec->no_buildid) { |
45604710 | 779 | process_buildids(rec); |
6156681b NK |
780 | |
781 | if (rec->buildid_all) | |
cd10b289 AH |
782 | dsos__hit_all(rec->session); |
783 | } | |
42aa276f | 784 | perf_session__write_header(rec->session, rec->evlist, fd, true); |
45604710 | 785 | } |
39d17dac | 786 | |
e3d59112 NK |
787 | if (!err && !quiet) { |
788 | char samples[128]; | |
789 | ||
ef149c25 | 790 | if (rec->samples && !rec->opts.full_auxtrace) |
e3d59112 NK |
791 | scnprintf(samples, sizeof(samples), |
792 | " (%" PRIu64 " samples)", rec->samples); | |
793 | else | |
794 | samples[0] = '\0'; | |
795 | ||
796 | fprintf(stderr, "[ perf record: Captured and wrote %.3f MB %s%s ]\n", | |
797 | perf_data_file__size(file) / 1024.0 / 1024.0, | |
798 | file->path, samples); | |
799 | } | |
800 | ||
39d17dac ACM |
801 | out_delete_session: |
802 | perf_session__delete(session); | |
45604710 | 803 | return status; |
de9ac07b | 804 | } |
0e9b20b8 | 805 | |
72a128aa | 806 | static void callchain_debug(void) |
09b0fd45 | 807 | { |
aad2b21c | 808 | static const char *str[CALLCHAIN_MAX] = { "NONE", "FP", "DWARF", "LBR" }; |
a601fdff | 809 | |
72a128aa | 810 | pr_debug("callchain: type %s\n", str[callchain_param.record_mode]); |
26d33022 | 811 | |
72a128aa | 812 | if (callchain_param.record_mode == CALLCHAIN_DWARF) |
09b0fd45 | 813 | pr_debug("callchain: stack dump size %d\n", |
72a128aa | 814 | callchain_param.dump_size); |
09b0fd45 JO |
815 | } |
816 | ||
c421e80b | 817 | int record_parse_callchain_opt(const struct option *opt, |
09b0fd45 JO |
818 | const char *arg, |
819 | int unset) | |
820 | { | |
09b0fd45 | 821 | int ret; |
c421e80b | 822 | struct record_opts *record = (struct record_opts *)opt->value; |
09b0fd45 | 823 | |
c421e80b | 824 | record->callgraph_set = true; |
72a128aa | 825 | callchain_param.enabled = !unset; |
eb853e80 | 826 | |
09b0fd45 JO |
827 | /* --no-call-graph */ |
828 | if (unset) { | |
72a128aa | 829 | callchain_param.record_mode = CALLCHAIN_NONE; |
09b0fd45 JO |
830 | pr_debug("callchain: disabled\n"); |
831 | return 0; | |
832 | } | |
833 | ||
c3a6a8c4 | 834 | ret = parse_callchain_record_opt(arg, &callchain_param); |
5c0cf224 JO |
835 | if (!ret) { |
836 | /* Enable data address sampling for DWARF unwind. */ | |
837 | if (callchain_param.record_mode == CALLCHAIN_DWARF) | |
838 | record->sample_address = true; | |
72a128aa | 839 | callchain_debug(); |
5c0cf224 | 840 | } |
26d33022 JO |
841 | |
842 | return ret; | |
843 | } | |
844 | ||
c421e80b | 845 | int record_callchain_opt(const struct option *opt, |
09b0fd45 JO |
846 | const char *arg __maybe_unused, |
847 | int unset __maybe_unused) | |
848 | { | |
c421e80b KL |
849 | struct record_opts *record = (struct record_opts *)opt->value; |
850 | ||
851 | record->callgraph_set = true; | |
72a128aa | 852 | callchain_param.enabled = true; |
09b0fd45 | 853 | |
72a128aa NK |
854 | if (callchain_param.record_mode == CALLCHAIN_NONE) |
855 | callchain_param.record_mode = CALLCHAIN_FP; | |
eb853e80 | 856 | |
72a128aa | 857 | callchain_debug(); |
09b0fd45 JO |
858 | return 0; |
859 | } | |
860 | ||
eb853e80 JO |
861 | static int perf_record_config(const char *var, const char *value, void *cb) |
862 | { | |
7a29c087 NK |
863 | struct record *rec = cb; |
864 | ||
865 | if (!strcmp(var, "record.build-id")) { | |
866 | if (!strcmp(value, "cache")) | |
867 | rec->no_buildid_cache = false; | |
868 | else if (!strcmp(value, "no-cache")) | |
869 | rec->no_buildid_cache = true; | |
870 | else if (!strcmp(value, "skip")) | |
871 | rec->no_buildid = true; | |
872 | else | |
873 | return -1; | |
874 | return 0; | |
875 | } | |
eb853e80 | 876 | if (!strcmp(var, "record.call-graph")) |
5a2e5e85 | 877 | var = "call-graph.record-mode"; /* fall-through */ |
eb853e80 JO |
878 | |
879 | return perf_default_config(var, value, cb); | |
880 | } | |
881 | ||
814c8c38 PZ |
882 | struct clockid_map { |
883 | const char *name; | |
884 | int clockid; | |
885 | }; | |
886 | ||
887 | #define CLOCKID_MAP(n, c) \ | |
888 | { .name = n, .clockid = (c), } | |
889 | ||
890 | #define CLOCKID_END { .name = NULL, } | |
891 | ||
892 | ||
893 | /* | |
894 | * Add the missing ones, we need to build on many distros... | |
895 | */ | |
896 | #ifndef CLOCK_MONOTONIC_RAW | |
897 | #define CLOCK_MONOTONIC_RAW 4 | |
898 | #endif | |
899 | #ifndef CLOCK_BOOTTIME | |
900 | #define CLOCK_BOOTTIME 7 | |
901 | #endif | |
902 | #ifndef CLOCK_TAI | |
903 | #define CLOCK_TAI 11 | |
904 | #endif | |
905 | ||
906 | static const struct clockid_map clockids[] = { | |
907 | /* available for all events, NMI safe */ | |
908 | CLOCKID_MAP("monotonic", CLOCK_MONOTONIC), | |
909 | CLOCKID_MAP("monotonic_raw", CLOCK_MONOTONIC_RAW), | |
910 | ||
911 | /* available for some events */ | |
912 | CLOCKID_MAP("realtime", CLOCK_REALTIME), | |
913 | CLOCKID_MAP("boottime", CLOCK_BOOTTIME), | |
914 | CLOCKID_MAP("tai", CLOCK_TAI), | |
915 | ||
916 | /* available for the lazy */ | |
917 | CLOCKID_MAP("mono", CLOCK_MONOTONIC), | |
918 | CLOCKID_MAP("raw", CLOCK_MONOTONIC_RAW), | |
919 | CLOCKID_MAP("real", CLOCK_REALTIME), | |
920 | CLOCKID_MAP("boot", CLOCK_BOOTTIME), | |
921 | ||
922 | CLOCKID_END, | |
923 | }; | |
924 | ||
925 | static int parse_clockid(const struct option *opt, const char *str, int unset) | |
926 | { | |
927 | struct record_opts *opts = (struct record_opts *)opt->value; | |
928 | const struct clockid_map *cm; | |
929 | const char *ostr = str; | |
930 | ||
931 | if (unset) { | |
932 | opts->use_clockid = 0; | |
933 | return 0; | |
934 | } | |
935 | ||
936 | /* no arg passed */ | |
937 | if (!str) | |
938 | return 0; | |
939 | ||
940 | /* no setting it twice */ | |
941 | if (opts->use_clockid) | |
942 | return -1; | |
943 | ||
944 | opts->use_clockid = true; | |
945 | ||
946 | /* if its a number, we're done */ | |
947 | if (sscanf(str, "%d", &opts->clockid) == 1) | |
948 | return 0; | |
949 | ||
950 | /* allow a "CLOCK_" prefix to the name */ | |
951 | if (!strncasecmp(str, "CLOCK_", 6)) | |
952 | str += 6; | |
953 | ||
954 | for (cm = clockids; cm->name; cm++) { | |
955 | if (!strcasecmp(str, cm->name)) { | |
956 | opts->clockid = cm->clockid; | |
957 | return 0; | |
958 | } | |
959 | } | |
960 | ||
961 | opts->use_clockid = false; | |
962 | ui__warning("unknown clockid %s, check man page\n", ostr); | |
963 | return -1; | |
964 | } | |
965 | ||
e9db1310 AH |
966 | static int record__parse_mmap_pages(const struct option *opt, |
967 | const char *str, | |
968 | int unset __maybe_unused) | |
969 | { | |
970 | struct record_opts *opts = opt->value; | |
971 | char *s, *p; | |
972 | unsigned int mmap_pages; | |
973 | int ret; | |
974 | ||
975 | if (!str) | |
976 | return -EINVAL; | |
977 | ||
978 | s = strdup(str); | |
979 | if (!s) | |
980 | return -ENOMEM; | |
981 | ||
982 | p = strchr(s, ','); | |
983 | if (p) | |
984 | *p = '\0'; | |
985 | ||
986 | if (*s) { | |
987 | ret = __perf_evlist__parse_mmap_pages(&mmap_pages, s); | |
988 | if (ret) | |
989 | goto out_free; | |
990 | opts->mmap_pages = mmap_pages; | |
991 | } | |
992 | ||
993 | if (!p) { | |
994 | ret = 0; | |
995 | goto out_free; | |
996 | } | |
997 | ||
998 | ret = __perf_evlist__parse_mmap_pages(&mmap_pages, p + 1); | |
999 | if (ret) | |
1000 | goto out_free; | |
1001 | ||
1002 | opts->auxtrace_mmap_pages = mmap_pages; | |
1003 | ||
1004 | out_free: | |
1005 | free(s); | |
1006 | return ret; | |
1007 | } | |
1008 | ||
e5b2c207 | 1009 | static const char * const __record_usage[] = { |
9e096753 MG |
1010 | "perf record [<options>] [<command>]", |
1011 | "perf record [<options>] -- <command> [<options>]", | |
0e9b20b8 IM |
1012 | NULL |
1013 | }; | |
e5b2c207 | 1014 | const char * const *record_usage = __record_usage; |
0e9b20b8 | 1015 | |
d20deb64 | 1016 | /* |
8c6f45a7 ACM |
1017 | * XXX Ideally would be local to cmd_record() and passed to a record__new |
1018 | * because we need to have access to it in record__exit, that is called | |
d20deb64 ACM |
1019 | * after cmd_record() exits, but since record_options need to be accessible to |
1020 | * builtin-script, leave it here. | |
1021 | * | |
1022 | * At least we don't ouch it in all the other functions here directly. | |
1023 | * | |
1024 | * Just say no to tons of global variables, sigh. | |
1025 | */ | |
8c6f45a7 | 1026 | static struct record record = { |
d20deb64 | 1027 | .opts = { |
8affc2b8 | 1028 | .sample_time = true, |
d20deb64 ACM |
1029 | .mmap_pages = UINT_MAX, |
1030 | .user_freq = UINT_MAX, | |
1031 | .user_interval = ULLONG_MAX, | |
447a6013 | 1032 | .freq = 4000, |
d1cb9fce NK |
1033 | .target = { |
1034 | .uses_mmap = true, | |
3aa5939d | 1035 | .default_per_cpu = true, |
d1cb9fce | 1036 | }, |
9d9cad76 | 1037 | .proc_map_timeout = 500, |
d20deb64 | 1038 | }, |
e3d59112 NK |
1039 | .tool = { |
1040 | .sample = process_sample_event, | |
1041 | .fork = perf_event__process_fork, | |
cca8482c | 1042 | .exit = perf_event__process_exit, |
e3d59112 NK |
1043 | .comm = perf_event__process_comm, |
1044 | .mmap = perf_event__process_mmap, | |
1045 | .mmap2 = perf_event__process_mmap2, | |
cca8482c | 1046 | .ordered_events = true, |
e3d59112 | 1047 | }, |
d20deb64 | 1048 | }; |
7865e817 | 1049 | |
76a26549 NK |
1050 | const char record_callchain_help[] = CALLCHAIN_RECORD_HELP |
1051 | "\n\t\t\t\tDefault: fp"; | |
61eaa3be | 1052 | |
d20deb64 ACM |
1053 | /* |
1054 | * XXX Will stay a global variable till we fix builtin-script.c to stop messing | |
1055 | * with it and switch to use the library functions in perf_evlist that came | |
b4006796 | 1056 | * from builtin-record.c, i.e. use record_opts, |
d20deb64 ACM |
1057 | * perf_evlist__prepare_workload, etc instead of fork+exec'in 'perf record', |
1058 | * using pipes, etc. | |
1059 | */ | |
e5b2c207 | 1060 | struct option __record_options[] = { |
d20deb64 | 1061 | OPT_CALLBACK('e', "event", &record.evlist, "event", |
86847b62 | 1062 | "event selector. use 'perf list' to list available events", |
f120f9d5 | 1063 | parse_events_option), |
d20deb64 | 1064 | OPT_CALLBACK(0, "filter", &record.evlist, "filter", |
c171b552 | 1065 | "event filter", parse_filter), |
4ba1faa1 WN |
1066 | OPT_CALLBACK_NOOPT(0, "exclude-perf", &record.evlist, |
1067 | NULL, "don't record events from perf itself", | |
1068 | exclude_perf), | |
bea03405 | 1069 | OPT_STRING('p', "pid", &record.opts.target.pid, "pid", |
d6d901c2 | 1070 | "record events on existing process id"), |
bea03405 | 1071 | OPT_STRING('t', "tid", &record.opts.target.tid, "tid", |
d6d901c2 | 1072 | "record events on existing thread id"), |
d20deb64 | 1073 | OPT_INTEGER('r', "realtime", &record.realtime_prio, |
0e9b20b8 | 1074 | "collect data with this RT SCHED_FIFO priority"), |
509051ea | 1075 | OPT_BOOLEAN(0, "no-buffering", &record.opts.no_buffering, |
acac03fa | 1076 | "collect data without buffering"), |
d20deb64 | 1077 | OPT_BOOLEAN('R', "raw-samples", &record.opts.raw_samples, |
daac07b2 | 1078 | "collect raw sample records from all opened counters"), |
bea03405 | 1079 | OPT_BOOLEAN('a', "all-cpus", &record.opts.target.system_wide, |
0e9b20b8 | 1080 | "system-wide collection from all CPUs"), |
bea03405 | 1081 | OPT_STRING('C', "cpu", &record.opts.target.cpu_list, "cpu", |
c45c6ea2 | 1082 | "list of cpus to monitor"), |
d20deb64 | 1083 | OPT_U64('c', "count", &record.opts.user_interval, "event period to sample"), |
f5fc1412 | 1084 | OPT_STRING('o', "output", &record.file.path, "file", |
abaff32a | 1085 | "output file name"), |
69e7e5b0 AH |
1086 | OPT_BOOLEAN_SET('i', "no-inherit", &record.opts.no_inherit, |
1087 | &record.opts.no_inherit_set, | |
1088 | "child tasks do not inherit counters"), | |
d20deb64 | 1089 | OPT_UINTEGER('F', "freq", &record.opts.user_freq, "profile at this frequency"), |
e9db1310 AH |
1090 | OPT_CALLBACK('m', "mmap-pages", &record.opts, "pages[,pages]", |
1091 | "number of mmap data pages and AUX area tracing mmap pages", | |
1092 | record__parse_mmap_pages), | |
d20deb64 | 1093 | OPT_BOOLEAN(0, "group", &record.opts.group, |
43bece79 | 1094 | "put the counters into a counter group"), |
09b0fd45 JO |
1095 | OPT_CALLBACK_NOOPT('g', NULL, &record.opts, |
1096 | NULL, "enables call-graph recording" , | |
1097 | &record_callchain_opt), | |
1098 | OPT_CALLBACK(0, "call-graph", &record.opts, | |
76a26549 | 1099 | "record_mode[,record_size]", record_callchain_help, |
09b0fd45 | 1100 | &record_parse_callchain_opt), |
c0555642 | 1101 | OPT_INCR('v', "verbose", &verbose, |
3da297a6 | 1102 | "be more verbose (show counter open errors, etc)"), |
b44308f5 | 1103 | OPT_BOOLEAN('q', "quiet", &quiet, "don't print any message"), |
d20deb64 | 1104 | OPT_BOOLEAN('s', "stat", &record.opts.inherit_stat, |
649c48a9 | 1105 | "per thread counts"), |
56100321 | 1106 | OPT_BOOLEAN('d', "data", &record.opts.sample_address, "Record the sample addresses"), |
3abebc55 AH |
1107 | OPT_BOOLEAN_SET('T', "timestamp", &record.opts.sample_time, |
1108 | &record.opts.sample_time_set, | |
1109 | "Record the sample timestamps"), | |
56100321 | 1110 | OPT_BOOLEAN('P', "period", &record.opts.period, "Record the sample period"), |
d20deb64 | 1111 | OPT_BOOLEAN('n', "no-samples", &record.opts.no_samples, |
649c48a9 | 1112 | "don't sample"), |
d2db9a98 WN |
1113 | OPT_BOOLEAN_SET('N', "no-buildid-cache", &record.no_buildid_cache, |
1114 | &record.no_buildid_cache_set, | |
1115 | "do not update the buildid cache"), | |
1116 | OPT_BOOLEAN_SET('B', "no-buildid", &record.no_buildid, | |
1117 | &record.no_buildid_set, | |
1118 | "do not collect buildids in perf.data"), | |
d20deb64 | 1119 | OPT_CALLBACK('G', "cgroup", &record.evlist, "name", |
023695d9 SE |
1120 | "monitor event in cgroup name only", |
1121 | parse_cgroups), | |
a6205a35 | 1122 | OPT_UINTEGER('D', "delay", &record.opts.initial_delay, |
6619a53e | 1123 | "ms to wait before starting measurement after program start"), |
bea03405 NK |
1124 | OPT_STRING('u', "uid", &record.opts.target.uid_str, "user", |
1125 | "user to profile"), | |
a5aabdac SE |
1126 | |
1127 | OPT_CALLBACK_NOOPT('b', "branch-any", &record.opts.branch_stack, | |
1128 | "branch any", "sample any taken branches", | |
1129 | parse_branch_stack), | |
1130 | ||
1131 | OPT_CALLBACK('j', "branch-filter", &record.opts.branch_stack, | |
1132 | "branch filter mask", "branch stack filter modes", | |
bdfebd84 | 1133 | parse_branch_stack), |
05484298 AK |
1134 | OPT_BOOLEAN('W', "weight", &record.opts.sample_weight, |
1135 | "sample by weight (on special events only)"), | |
475eeab9 AK |
1136 | OPT_BOOLEAN(0, "transaction", &record.opts.sample_transaction, |
1137 | "sample transaction flags (special events only)"), | |
3aa5939d AH |
1138 | OPT_BOOLEAN(0, "per-thread", &record.opts.target.per_thread, |
1139 | "use per-thread mmaps"), | |
bcc84ec6 SE |
1140 | OPT_CALLBACK_OPTARG('I', "intr-regs", &record.opts.sample_intr_regs, NULL, "any register", |
1141 | "sample selected machine registers on interrupt," | |
1142 | " use -I ? to list register names", parse_regs), | |
85c273d2 AK |
1143 | OPT_BOOLEAN(0, "running-time", &record.opts.running_time, |
1144 | "Record running/enabled time of read (:S) events"), | |
814c8c38 PZ |
1145 | OPT_CALLBACK('k', "clockid", &record.opts, |
1146 | "clockid", "clockid to use for events, see clock_gettime()", | |
1147 | parse_clockid), | |
2dd6d8a1 AH |
1148 | OPT_STRING_OPTARG('S', "snapshot", &record.opts.auxtrace_snapshot_opts, |
1149 | "opts", "AUX area tracing Snapshot Mode", ""), | |
9d9cad76 KL |
1150 | OPT_UINTEGER(0, "proc-map-timeout", &record.opts.proc_map_timeout, |
1151 | "per thread proc mmap processing timeout in ms"), | |
b757bb09 AH |
1152 | OPT_BOOLEAN(0, "switch-events", &record.opts.record_switch_events, |
1153 | "Record context switch events"), | |
85723885 JO |
1154 | OPT_BOOLEAN_FLAG(0, "all-kernel", &record.opts.all_kernel, |
1155 | "Configure all used events to run in kernel space.", | |
1156 | PARSE_OPT_EXCLUSIVE), | |
1157 | OPT_BOOLEAN_FLAG(0, "all-user", &record.opts.all_user, | |
1158 | "Configure all used events to run in user space.", | |
1159 | PARSE_OPT_EXCLUSIVE), | |
71dc2326 WN |
1160 | OPT_STRING(0, "clang-path", &llvm_param.clang_path, "clang path", |
1161 | "clang binary to use for compiling BPF scriptlets"), | |
1162 | OPT_STRING(0, "clang-opt", &llvm_param.clang_opt, "clang options", | |
1163 | "options passed to clang when compiling BPF scriptlets"), | |
7efe0e03 HK |
1164 | OPT_STRING(0, "vmlinux", &symbol_conf.vmlinux_name, |
1165 | "file", "vmlinux pathname"), | |
6156681b NK |
1166 | OPT_BOOLEAN(0, "buildid-all", &record.buildid_all, |
1167 | "Record build-id of all DSOs regardless of hits"), | |
0e9b20b8 IM |
1168 | OPT_END() |
1169 | }; | |
1170 | ||
e5b2c207 NK |
1171 | struct option *record_options = __record_options; |
1172 | ||
1d037ca1 | 1173 | int cmd_record(int argc, const char **argv, const char *prefix __maybe_unused) |
0e9b20b8 | 1174 | { |
ef149c25 | 1175 | int err; |
8c6f45a7 | 1176 | struct record *rec = &record; |
16ad2ffb | 1177 | char errbuf[BUFSIZ]; |
0e9b20b8 | 1178 | |
48e1cab1 WN |
1179 | #ifndef HAVE_LIBBPF_SUPPORT |
1180 | # define set_nobuild(s, l, c) set_option_nobuild(record_options, s, l, "NO_LIBBPF=1", c) | |
1181 | set_nobuild('\0', "clang-path", true); | |
1182 | set_nobuild('\0', "clang-opt", true); | |
1183 | # undef set_nobuild | |
7efe0e03 HK |
1184 | #endif |
1185 | ||
1186 | #ifndef HAVE_BPF_PROLOGUE | |
1187 | # if !defined (HAVE_DWARF_SUPPORT) | |
1188 | # define REASON "NO_DWARF=1" | |
1189 | # elif !defined (HAVE_LIBBPF_SUPPORT) | |
1190 | # define REASON "NO_LIBBPF=1" | |
1191 | # else | |
1192 | # define REASON "this architecture doesn't support BPF prologue" | |
1193 | # endif | |
1194 | # define set_nobuild(s, l, c) set_option_nobuild(record_options, s, l, REASON, c) | |
1195 | set_nobuild('\0', "vmlinux", true); | |
1196 | # undef set_nobuild | |
1197 | # undef REASON | |
48e1cab1 WN |
1198 | #endif |
1199 | ||
3e2be2da ACM |
1200 | rec->evlist = perf_evlist__new(); |
1201 | if (rec->evlist == NULL) | |
361c99a6 ACM |
1202 | return -ENOMEM; |
1203 | ||
eb853e80 JO |
1204 | perf_config(perf_record_config, rec); |
1205 | ||
bca647aa | 1206 | argc = parse_options(argc, argv, record_options, record_usage, |
655000e7 | 1207 | PARSE_OPT_STOP_AT_NON_OPTION); |
602ad878 | 1208 | if (!argc && target__none(&rec->opts.target)) |
bca647aa | 1209 | usage_with_options(record_usage, record_options); |
0e9b20b8 | 1210 | |
bea03405 | 1211 | if (nr_cgroups && !rec->opts.target.system_wide) { |
c7118369 NK |
1212 | usage_with_options_msg(record_usage, record_options, |
1213 | "cgroup monitoring only available in system-wide mode"); | |
1214 | ||
023695d9 | 1215 | } |
b757bb09 AH |
1216 | if (rec->opts.record_switch_events && |
1217 | !perf_can_record_switch_events()) { | |
c7118369 NK |
1218 | ui__error("kernel does not support recording context switch events\n"); |
1219 | parse_options_usage(record_usage, record_options, "switch-events", 0); | |
1220 | return -EINVAL; | |
b757bb09 | 1221 | } |
023695d9 | 1222 | |
ef149c25 AH |
1223 | if (!rec->itr) { |
1224 | rec->itr = auxtrace_record__init(rec->evlist, &err); | |
1225 | if (err) | |
1226 | return err; | |
1227 | } | |
1228 | ||
2dd6d8a1 AH |
1229 | err = auxtrace_parse_snapshot_options(rec->itr, &rec->opts, |
1230 | rec->opts.auxtrace_snapshot_opts); | |
1231 | if (err) | |
1232 | return err; | |
1233 | ||
ef149c25 AH |
1234 | err = -ENOMEM; |
1235 | ||
0a7e6d1b | 1236 | symbol__init(NULL); |
baa2f6ce | 1237 | |
ec80fde7 | 1238 | if (symbol_conf.kptr_restrict) |
646aaea6 ACM |
1239 | pr_warning( |
1240 | "WARNING: Kernel address maps (/proc/{kallsyms,modules}) are restricted,\n" | |
1241 | "check /proc/sys/kernel/kptr_restrict.\n\n" | |
1242 | "Samples in kernel functions may not be resolved if a suitable vmlinux\n" | |
1243 | "file is not found in the buildid cache or in the vmlinux path.\n\n" | |
1244 | "Samples in kernel modules won't be resolved at all.\n\n" | |
1245 | "If some relocation was applied (e.g. kexec) symbols may be misresolved\n" | |
1246 | "even with a suitable vmlinux or kallsyms file.\n\n"); | |
ec80fde7 | 1247 | |
d20deb64 | 1248 | if (rec->no_buildid_cache || rec->no_buildid) |
a1ac1d3c | 1249 | disable_buildid_cache(); |
655000e7 | 1250 | |
3e2be2da ACM |
1251 | if (rec->evlist->nr_entries == 0 && |
1252 | perf_evlist__add_default(rec->evlist) < 0) { | |
69aad6f1 ACM |
1253 | pr_err("Not enough memory for event selector list\n"); |
1254 | goto out_symbol_exit; | |
bbd36e5e | 1255 | } |
0e9b20b8 | 1256 | |
69e7e5b0 AH |
1257 | if (rec->opts.target.tid && !rec->opts.no_inherit_set) |
1258 | rec->opts.no_inherit = true; | |
1259 | ||
602ad878 | 1260 | err = target__validate(&rec->opts.target); |
16ad2ffb | 1261 | if (err) { |
602ad878 | 1262 | target__strerror(&rec->opts.target, err, errbuf, BUFSIZ); |
16ad2ffb NK |
1263 | ui__warning("%s", errbuf); |
1264 | } | |
1265 | ||
602ad878 | 1266 | err = target__parse_uid(&rec->opts.target); |
16ad2ffb NK |
1267 | if (err) { |
1268 | int saved_errno = errno; | |
4bd0f2d2 | 1269 | |
602ad878 | 1270 | target__strerror(&rec->opts.target, err, errbuf, BUFSIZ); |
3780f488 | 1271 | ui__error("%s", errbuf); |
16ad2ffb NK |
1272 | |
1273 | err = -saved_errno; | |
8fa60e1f | 1274 | goto out_symbol_exit; |
16ad2ffb | 1275 | } |
0d37aa34 | 1276 | |
16ad2ffb | 1277 | err = -ENOMEM; |
3e2be2da | 1278 | if (perf_evlist__create_maps(rec->evlist, &rec->opts.target) < 0) |
dd7927f4 | 1279 | usage_with_options(record_usage, record_options); |
69aad6f1 | 1280 | |
ef149c25 AH |
1281 | err = auxtrace_record__options(rec->itr, rec->evlist, &rec->opts); |
1282 | if (err) | |
1283 | goto out_symbol_exit; | |
1284 | ||
6156681b NK |
1285 | /* |
1286 | * We take all buildids when the file contains | |
1287 | * AUX area tracing data because we do not decode the | |
1288 | * trace because it would take too long. | |
1289 | */ | |
1290 | if (rec->opts.full_auxtrace) | |
1291 | rec->buildid_all = true; | |
1292 | ||
b4006796 | 1293 | if (record_opts__config(&rec->opts)) { |
39d17dac | 1294 | err = -EINVAL; |
03ad9747 | 1295 | goto out_symbol_exit; |
7e4ff9e3 MG |
1296 | } |
1297 | ||
d20deb64 | 1298 | err = __cmd_record(&record, argc, argv); |
d65a458b | 1299 | out_symbol_exit: |
45604710 | 1300 | perf_evlist__delete(rec->evlist); |
d65a458b | 1301 | symbol__exit(); |
ef149c25 | 1302 | auxtrace_record__free(rec->itr); |
39d17dac | 1303 | return err; |
0e9b20b8 | 1304 | } |
2dd6d8a1 AH |
1305 | |
1306 | static void snapshot_sig_handler(int sig __maybe_unused) | |
1307 | { | |
1308 | if (!auxtrace_snapshot_enabled) | |
1309 | return; | |
1310 | auxtrace_snapshot_enabled = 0; | |
1311 | auxtrace_snapshot_err = auxtrace_record__snapshot_start(record.itr); | |
1312 | auxtrace_record__snapshot_started = 1; | |
1313 | } |