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" |
d8871ea7 | 36 | #include "asm/bug.h" |
7c6a1c65 | 37 | |
97124d5e | 38 | #include <unistd.h> |
de9ac07b | 39 | #include <sched.h> |
a41794cd | 40 | #include <sys/mman.h> |
de9ac07b | 41 | |
78da39fa | 42 | |
8c6f45a7 | 43 | struct record { |
45694aa7 | 44 | struct perf_tool tool; |
b4006796 | 45 | struct record_opts opts; |
d20deb64 | 46 | u64 bytes_written; |
f5fc1412 | 47 | struct perf_data_file file; |
ef149c25 | 48 | struct auxtrace_record *itr; |
d20deb64 ACM |
49 | struct perf_evlist *evlist; |
50 | struct perf_session *session; | |
51 | const char *progname; | |
d20deb64 | 52 | int realtime_prio; |
d20deb64 | 53 | bool no_buildid; |
d2db9a98 | 54 | bool no_buildid_set; |
d20deb64 | 55 | bool no_buildid_cache; |
d2db9a98 | 56 | bool no_buildid_cache_set; |
6156681b | 57 | bool buildid_all; |
9f065194 | 58 | unsigned long long samples; |
0f82ebc4 | 59 | }; |
a21ca2ca | 60 | |
8c6f45a7 | 61 | static int record__write(struct record *rec, void *bf, size_t size) |
f5970550 | 62 | { |
cf8b2e69 | 63 | if (perf_data_file__write(rec->session->file, bf, size) < 0) { |
50a9b868 JO |
64 | pr_err("failed to write perf data, error: %m\n"); |
65 | return -1; | |
f5970550 | 66 | } |
8d3eca20 | 67 | |
cf8b2e69 | 68 | rec->bytes_written += size; |
8d3eca20 | 69 | return 0; |
f5970550 PZ |
70 | } |
71 | ||
45694aa7 | 72 | static int process_synthesized_event(struct perf_tool *tool, |
d20deb64 | 73 | union perf_event *event, |
1d037ca1 IT |
74 | struct perf_sample *sample __maybe_unused, |
75 | struct machine *machine __maybe_unused) | |
234fbbf5 | 76 | { |
8c6f45a7 ACM |
77 | struct record *rec = container_of(tool, struct record, tool); |
78 | return record__write(rec, event, event->header.size); | |
234fbbf5 ACM |
79 | } |
80 | ||
e5685730 | 81 | static int record__mmap_read(struct record *rec, int idx) |
de9ac07b | 82 | { |
e5685730 | 83 | struct perf_mmap *md = &rec->evlist->mmap[idx]; |
7b8283b5 DA |
84 | u64 head = perf_mmap__read_head(md); |
85 | u64 old = md->prev; | |
918512b4 | 86 | unsigned char *data = md->base + page_size; |
de9ac07b PZ |
87 | unsigned long size; |
88 | void *buf; | |
8d3eca20 | 89 | int rc = 0; |
de9ac07b | 90 | |
dc82009a | 91 | if (old == head) |
8d3eca20 | 92 | return 0; |
dc82009a | 93 | |
d20deb64 | 94 | rec->samples++; |
de9ac07b PZ |
95 | |
96 | size = head - old; | |
97 | ||
98 | if ((old & md->mask) + size != (head & md->mask)) { | |
99 | buf = &data[old & md->mask]; | |
100 | size = md->mask + 1 - (old & md->mask); | |
101 | old += size; | |
021e9f47 | 102 | |
8c6f45a7 | 103 | if (record__write(rec, buf, size) < 0) { |
8d3eca20 DA |
104 | rc = -1; |
105 | goto out; | |
106 | } | |
de9ac07b PZ |
107 | } |
108 | ||
109 | buf = &data[old & md->mask]; | |
110 | size = head - old; | |
111 | old += size; | |
021e9f47 | 112 | |
8c6f45a7 | 113 | if (record__write(rec, buf, size) < 0) { |
8d3eca20 DA |
114 | rc = -1; |
115 | goto out; | |
116 | } | |
de9ac07b PZ |
117 | |
118 | md->prev = old; | |
e5685730 | 119 | perf_evlist__mmap_consume(rec->evlist, idx); |
8d3eca20 DA |
120 | out: |
121 | return rc; | |
de9ac07b PZ |
122 | } |
123 | ||
2dd6d8a1 AH |
124 | static volatile int done; |
125 | static volatile int signr = -1; | |
126 | static volatile int child_finished; | |
127 | static volatile int auxtrace_snapshot_enabled; | |
128 | static volatile int auxtrace_snapshot_err; | |
129 | static volatile int auxtrace_record__snapshot_started; | |
130 | ||
131 | static void sig_handler(int sig) | |
132 | { | |
133 | if (sig == SIGCHLD) | |
134 | child_finished = 1; | |
135 | else | |
136 | signr = sig; | |
137 | ||
138 | done = 1; | |
139 | } | |
140 | ||
141 | static void record__sig_exit(void) | |
142 | { | |
143 | if (signr == -1) | |
144 | return; | |
145 | ||
146 | signal(signr, SIG_DFL); | |
147 | raise(signr); | |
148 | } | |
149 | ||
e31f0d01 AH |
150 | #ifdef HAVE_AUXTRACE_SUPPORT |
151 | ||
ef149c25 AH |
152 | static int record__process_auxtrace(struct perf_tool *tool, |
153 | union perf_event *event, void *data1, | |
154 | size_t len1, void *data2, size_t len2) | |
155 | { | |
156 | struct record *rec = container_of(tool, struct record, tool); | |
99fa2984 | 157 | struct perf_data_file *file = &rec->file; |
ef149c25 AH |
158 | size_t padding; |
159 | u8 pad[8] = {0}; | |
160 | ||
99fa2984 AH |
161 | if (!perf_data_file__is_pipe(file)) { |
162 | off_t file_offset; | |
163 | int fd = perf_data_file__fd(file); | |
164 | int err; | |
165 | ||
166 | file_offset = lseek(fd, 0, SEEK_CUR); | |
167 | if (file_offset == -1) | |
168 | return -1; | |
169 | err = auxtrace_index__auxtrace_event(&rec->session->auxtrace_index, | |
170 | event, file_offset); | |
171 | if (err) | |
172 | return err; | |
173 | } | |
174 | ||
ef149c25 AH |
175 | /* event.auxtrace.size includes padding, see __auxtrace_mmap__read() */ |
176 | padding = (len1 + len2) & 7; | |
177 | if (padding) | |
178 | padding = 8 - padding; | |
179 | ||
180 | record__write(rec, event, event->header.size); | |
181 | record__write(rec, data1, len1); | |
182 | if (len2) | |
183 | record__write(rec, data2, len2); | |
184 | record__write(rec, &pad, padding); | |
185 | ||
186 | return 0; | |
187 | } | |
188 | ||
189 | static int record__auxtrace_mmap_read(struct record *rec, | |
190 | struct auxtrace_mmap *mm) | |
191 | { | |
192 | int ret; | |
193 | ||
194 | ret = auxtrace_mmap__read(mm, rec->itr, &rec->tool, | |
195 | record__process_auxtrace); | |
196 | if (ret < 0) | |
197 | return ret; | |
198 | ||
199 | if (ret) | |
200 | rec->samples++; | |
201 | ||
202 | return 0; | |
203 | } | |
204 | ||
2dd6d8a1 AH |
205 | static int record__auxtrace_mmap_read_snapshot(struct record *rec, |
206 | struct auxtrace_mmap *mm) | |
207 | { | |
208 | int ret; | |
209 | ||
210 | ret = auxtrace_mmap__read_snapshot(mm, rec->itr, &rec->tool, | |
211 | record__process_auxtrace, | |
212 | rec->opts.auxtrace_snapshot_size); | |
213 | if (ret < 0) | |
214 | return ret; | |
215 | ||
216 | if (ret) | |
217 | rec->samples++; | |
218 | ||
219 | return 0; | |
220 | } | |
221 | ||
222 | static int record__auxtrace_read_snapshot_all(struct record *rec) | |
223 | { | |
224 | int i; | |
225 | int rc = 0; | |
226 | ||
227 | for (i = 0; i < rec->evlist->nr_mmaps; i++) { | |
228 | struct auxtrace_mmap *mm = | |
229 | &rec->evlist->mmap[i].auxtrace_mmap; | |
230 | ||
231 | if (!mm->base) | |
232 | continue; | |
233 | ||
234 | if (record__auxtrace_mmap_read_snapshot(rec, mm) != 0) { | |
235 | rc = -1; | |
236 | goto out; | |
237 | } | |
238 | } | |
239 | out: | |
240 | return rc; | |
241 | } | |
242 | ||
243 | static void record__read_auxtrace_snapshot(struct record *rec) | |
244 | { | |
245 | pr_debug("Recording AUX area tracing snapshot\n"); | |
246 | if (record__auxtrace_read_snapshot_all(rec) < 0) { | |
247 | auxtrace_snapshot_err = -1; | |
248 | } else { | |
249 | auxtrace_snapshot_err = auxtrace_record__snapshot_finish(rec->itr); | |
250 | if (!auxtrace_snapshot_err) | |
251 | auxtrace_snapshot_enabled = 1; | |
252 | } | |
253 | } | |
254 | ||
e31f0d01 AH |
255 | #else |
256 | ||
257 | static inline | |
258 | int record__auxtrace_mmap_read(struct record *rec __maybe_unused, | |
259 | struct auxtrace_mmap *mm __maybe_unused) | |
260 | { | |
261 | return 0; | |
262 | } | |
263 | ||
2dd6d8a1 AH |
264 | static inline |
265 | void record__read_auxtrace_snapshot(struct record *rec __maybe_unused) | |
de9ac07b | 266 | { |
f7b7c26e PZ |
267 | } |
268 | ||
2dd6d8a1 AH |
269 | static inline |
270 | int auxtrace_record__snapshot_start(struct auxtrace_record *itr __maybe_unused) | |
f7b7c26e | 271 | { |
2dd6d8a1 | 272 | return 0; |
de9ac07b PZ |
273 | } |
274 | ||
2dd6d8a1 AH |
275 | #endif |
276 | ||
8c6f45a7 | 277 | static int record__open(struct record *rec) |
dd7927f4 | 278 | { |
56e52e85 | 279 | char msg[512]; |
6a4bb04c | 280 | struct perf_evsel *pos; |
d20deb64 ACM |
281 | struct perf_evlist *evlist = rec->evlist; |
282 | struct perf_session *session = rec->session; | |
b4006796 | 283 | struct record_opts *opts = &rec->opts; |
8d3eca20 | 284 | int rc = 0; |
dd7927f4 | 285 | |
f77a9518 | 286 | perf_evlist__config(evlist, opts); |
cac21425 | 287 | |
0050f7aa | 288 | evlist__for_each(evlist, pos) { |
dd7927f4 | 289 | try_again: |
d988d5ee | 290 | if (perf_evsel__open(pos, pos->cpus, pos->threads) < 0) { |
56e52e85 | 291 | if (perf_evsel__fallback(pos, errno, msg, sizeof(msg))) { |
d6d901c2 | 292 | if (verbose) |
c0a54341 | 293 | ui__warning("%s\n", msg); |
d6d901c2 ZY |
294 | goto try_again; |
295 | } | |
ca6a4258 | 296 | |
56e52e85 ACM |
297 | rc = -errno; |
298 | perf_evsel__open_strerror(pos, &opts->target, | |
299 | errno, msg, sizeof(msg)); | |
300 | ui__error("%s\n", msg); | |
8d3eca20 | 301 | goto out; |
c171b552 LZ |
302 | } |
303 | } | |
a43d3f08 | 304 | |
23d4aad4 ACM |
305 | if (perf_evlist__apply_filters(evlist, &pos)) { |
306 | error("failed to set filter \"%s\" on event %s with %d (%s)\n", | |
307 | pos->filter, perf_evsel__name(pos), errno, | |
35550da3 | 308 | strerror_r(errno, msg, sizeof(msg))); |
8d3eca20 DA |
309 | rc = -1; |
310 | goto out; | |
0a102479 FW |
311 | } |
312 | ||
ef149c25 | 313 | if (perf_evlist__mmap_ex(evlist, opts->mmap_pages, false, |
2dd6d8a1 AH |
314 | opts->auxtrace_mmap_pages, |
315 | opts->auxtrace_snapshot_mode) < 0) { | |
8d3eca20 DA |
316 | if (errno == EPERM) { |
317 | pr_err("Permission error mapping pages.\n" | |
318 | "Consider increasing " | |
319 | "/proc/sys/kernel/perf_event_mlock_kb,\n" | |
320 | "or try again with a smaller value of -m/--mmap_pages.\n" | |
ef149c25 AH |
321 | "(current value: %u,%u)\n", |
322 | opts->mmap_pages, opts->auxtrace_mmap_pages); | |
8d3eca20 | 323 | rc = -errno; |
8d3eca20 | 324 | } else { |
35550da3 MH |
325 | pr_err("failed to mmap with %d (%s)\n", errno, |
326 | strerror_r(errno, msg, sizeof(msg))); | |
95c36561 WN |
327 | if (errno) |
328 | rc = -errno; | |
329 | else | |
330 | rc = -EINVAL; | |
8d3eca20 DA |
331 | } |
332 | goto out; | |
18e60939 | 333 | } |
0a27d7f9 | 334 | |
563aecb2 | 335 | session->evlist = evlist; |
7b56cce2 | 336 | perf_session__set_id_hdr_size(session); |
8d3eca20 DA |
337 | out: |
338 | return rc; | |
16c8a109 PZ |
339 | } |
340 | ||
e3d59112 NK |
341 | static int process_sample_event(struct perf_tool *tool, |
342 | union perf_event *event, | |
343 | struct perf_sample *sample, | |
344 | struct perf_evsel *evsel, | |
345 | struct machine *machine) | |
346 | { | |
347 | struct record *rec = container_of(tool, struct record, tool); | |
348 | ||
349 | rec->samples++; | |
350 | ||
351 | return build_id__mark_dso_hit(tool, event, sample, evsel, machine); | |
352 | } | |
353 | ||
8c6f45a7 | 354 | static int process_buildids(struct record *rec) |
6122e4e4 | 355 | { |
f5fc1412 JO |
356 | struct perf_data_file *file = &rec->file; |
357 | struct perf_session *session = rec->session; | |
6122e4e4 | 358 | |
457ae94a | 359 | if (file->size == 0) |
9f591fd7 ACM |
360 | return 0; |
361 | ||
00dc8657 NK |
362 | /* |
363 | * During this process, it'll load kernel map and replace the | |
364 | * dso->long_name to a real pathname it found. In this case | |
365 | * we prefer the vmlinux path like | |
366 | * /lib/modules/3.16.4/build/vmlinux | |
367 | * | |
368 | * rather than build-id path (in debug directory). | |
369 | * $HOME/.debug/.build-id/f0/6e17aa50adf4d00b88925e03775de107611551 | |
370 | */ | |
371 | symbol_conf.ignore_vmlinux_buildid = true; | |
372 | ||
6156681b NK |
373 | /* |
374 | * If --buildid-all is given, it marks all DSO regardless of hits, | |
375 | * so no need to process samples. | |
376 | */ | |
377 | if (rec->buildid_all) | |
378 | rec->tool.sample = NULL; | |
379 | ||
b7b61cbe | 380 | return perf_session__process_events(session); |
6122e4e4 ACM |
381 | } |
382 | ||
8115d60c | 383 | static void perf_event__synthesize_guest_os(struct machine *machine, void *data) |
a1645ce1 ZY |
384 | { |
385 | int err; | |
45694aa7 | 386 | struct perf_tool *tool = data; |
a1645ce1 ZY |
387 | /* |
388 | *As for guest kernel when processing subcommand record&report, | |
389 | *we arrange module mmap prior to guest kernel mmap and trigger | |
390 | *a preload dso because default guest module symbols are loaded | |
391 | *from guest kallsyms instead of /lib/modules/XXX/XXX. This | |
392 | *method is used to avoid symbol missing when the first addr is | |
393 | *in module instead of in guest kernel. | |
394 | */ | |
45694aa7 | 395 | err = perf_event__synthesize_modules(tool, process_synthesized_event, |
743eb868 | 396 | machine); |
a1645ce1 ZY |
397 | if (err < 0) |
398 | pr_err("Couldn't record guest kernel [%d]'s reference" | |
23346f21 | 399 | " relocation symbol.\n", machine->pid); |
a1645ce1 | 400 | |
a1645ce1 ZY |
401 | /* |
402 | * We use _stext for guest kernel because guest kernel's /proc/kallsyms | |
403 | * have no _text sometimes. | |
404 | */ | |
45694aa7 | 405 | err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event, |
0ae617be | 406 | machine); |
a1645ce1 ZY |
407 | if (err < 0) |
408 | pr_err("Couldn't record guest kernel [%d]'s reference" | |
23346f21 | 409 | " relocation symbol.\n", machine->pid); |
a1645ce1 ZY |
410 | } |
411 | ||
98402807 FW |
412 | static struct perf_event_header finished_round_event = { |
413 | .size = sizeof(struct perf_event_header), | |
414 | .type = PERF_RECORD_FINISHED_ROUND, | |
415 | }; | |
416 | ||
8c6f45a7 | 417 | static int record__mmap_read_all(struct record *rec) |
98402807 | 418 | { |
dcabb507 | 419 | u64 bytes_written = rec->bytes_written; |
0e2e63dd | 420 | int i; |
8d3eca20 | 421 | int rc = 0; |
98402807 | 422 | |
d20deb64 | 423 | for (i = 0; i < rec->evlist->nr_mmaps; i++) { |
ef149c25 AH |
424 | struct auxtrace_mmap *mm = &rec->evlist->mmap[i].auxtrace_mmap; |
425 | ||
8d3eca20 | 426 | if (rec->evlist->mmap[i].base) { |
e5685730 | 427 | if (record__mmap_read(rec, i) != 0) { |
8d3eca20 DA |
428 | rc = -1; |
429 | goto out; | |
430 | } | |
431 | } | |
ef149c25 | 432 | |
2dd6d8a1 | 433 | if (mm->base && !rec->opts.auxtrace_snapshot_mode && |
ef149c25 AH |
434 | record__auxtrace_mmap_read(rec, mm) != 0) { |
435 | rc = -1; | |
436 | goto out; | |
437 | } | |
98402807 FW |
438 | } |
439 | ||
dcabb507 JO |
440 | /* |
441 | * Mark the round finished in case we wrote | |
442 | * at least one event. | |
443 | */ | |
444 | if (bytes_written != rec->bytes_written) | |
445 | rc = record__write(rec, &finished_round_event, sizeof(finished_round_event)); | |
8d3eca20 DA |
446 | |
447 | out: | |
448 | return rc; | |
98402807 FW |
449 | } |
450 | ||
8c6f45a7 | 451 | static void record__init_features(struct record *rec) |
57706abc | 452 | { |
57706abc DA |
453 | struct perf_session *session = rec->session; |
454 | int feat; | |
455 | ||
456 | for (feat = HEADER_FIRST_FEATURE; feat < HEADER_LAST_FEATURE; feat++) | |
457 | perf_header__set_feat(&session->header, feat); | |
458 | ||
459 | if (rec->no_buildid) | |
460 | perf_header__clear_feat(&session->header, HEADER_BUILD_ID); | |
461 | ||
3e2be2da | 462 | if (!have_tracepoints(&rec->evlist->entries)) |
57706abc DA |
463 | perf_header__clear_feat(&session->header, HEADER_TRACING_DATA); |
464 | ||
465 | if (!rec->opts.branch_stack) | |
466 | perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK); | |
ef149c25 AH |
467 | |
468 | if (!rec->opts.full_auxtrace) | |
469 | perf_header__clear_feat(&session->header, HEADER_AUXTRACE); | |
ffa517ad JO |
470 | |
471 | perf_header__clear_feat(&session->header, HEADER_STAT); | |
57706abc DA |
472 | } |
473 | ||
e1ab48ba WN |
474 | static void |
475 | record__finish_output(struct record *rec) | |
476 | { | |
477 | struct perf_data_file *file = &rec->file; | |
478 | int fd = perf_data_file__fd(file); | |
479 | ||
480 | if (file->is_pipe) | |
481 | return; | |
482 | ||
483 | rec->session->header.data_size += rec->bytes_written; | |
484 | file->size = lseek(perf_data_file__fd(file), 0, SEEK_CUR); | |
485 | ||
486 | if (!rec->no_buildid) { | |
487 | process_buildids(rec); | |
488 | ||
489 | if (rec->buildid_all) | |
490 | dsos__hit_all(rec->session); | |
491 | } | |
492 | perf_session__write_header(rec->session, rec->evlist, fd, true); | |
493 | ||
494 | return; | |
495 | } | |
496 | ||
f33cbe72 ACM |
497 | static volatile int workload_exec_errno; |
498 | ||
499 | /* | |
500 | * perf_evlist__prepare_workload will send a SIGUSR1 | |
501 | * if the fork fails, since we asked by setting its | |
502 | * want_signal to true. | |
503 | */ | |
45604710 NK |
504 | static void workload_exec_failed_signal(int signo __maybe_unused, |
505 | siginfo_t *info, | |
f33cbe72 ACM |
506 | void *ucontext __maybe_unused) |
507 | { | |
508 | workload_exec_errno = info->si_value.sival_int; | |
509 | done = 1; | |
f33cbe72 ACM |
510 | child_finished = 1; |
511 | } | |
512 | ||
2dd6d8a1 AH |
513 | static void snapshot_sig_handler(int sig); |
514 | ||
c45c86eb WN |
515 | static int record__synthesize(struct record *rec) |
516 | { | |
517 | struct perf_session *session = rec->session; | |
518 | struct machine *machine = &session->machines.host; | |
519 | struct perf_data_file *file = &rec->file; | |
520 | struct record_opts *opts = &rec->opts; | |
521 | struct perf_tool *tool = &rec->tool; | |
522 | int fd = perf_data_file__fd(file); | |
523 | int err = 0; | |
524 | ||
525 | if (file->is_pipe) { | |
526 | err = perf_event__synthesize_attrs(tool, session, | |
527 | process_synthesized_event); | |
528 | if (err < 0) { | |
529 | pr_err("Couldn't synthesize attrs.\n"); | |
530 | goto out; | |
531 | } | |
532 | ||
533 | if (have_tracepoints(&rec->evlist->entries)) { | |
534 | /* | |
535 | * FIXME err <= 0 here actually means that | |
536 | * there were no tracepoints so its not really | |
537 | * an error, just that we don't need to | |
538 | * synthesize anything. We really have to | |
539 | * return this more properly and also | |
540 | * propagate errors that now are calling die() | |
541 | */ | |
542 | err = perf_event__synthesize_tracing_data(tool, fd, rec->evlist, | |
543 | process_synthesized_event); | |
544 | if (err <= 0) { | |
545 | pr_err("Couldn't record tracing data.\n"); | |
546 | goto out; | |
547 | } | |
548 | rec->bytes_written += err; | |
549 | } | |
550 | } | |
551 | ||
552 | if (rec->opts.full_auxtrace) { | |
553 | err = perf_event__synthesize_auxtrace_info(rec->itr, tool, | |
554 | session, process_synthesized_event); | |
555 | if (err) | |
556 | goto out; | |
557 | } | |
558 | ||
559 | err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event, | |
560 | machine); | |
561 | WARN_ONCE(err < 0, "Couldn't record kernel reference relocation symbol\n" | |
562 | "Symbol resolution may be skewed if relocation was used (e.g. kexec).\n" | |
563 | "Check /proc/kallsyms permission or run as root.\n"); | |
564 | ||
565 | err = perf_event__synthesize_modules(tool, process_synthesized_event, | |
566 | machine); | |
567 | WARN_ONCE(err < 0, "Couldn't record kernel module information.\n" | |
568 | "Symbol resolution may be skewed if relocation was used (e.g. kexec).\n" | |
569 | "Check /proc/modules permission or run as root.\n"); | |
570 | ||
571 | if (perf_guest) { | |
572 | machines__process_guests(&session->machines, | |
573 | perf_event__synthesize_guest_os, tool); | |
574 | } | |
575 | ||
576 | err = __machine__synthesize_threads(machine, tool, &opts->target, rec->evlist->threads, | |
577 | process_synthesized_event, opts->sample_address, | |
578 | opts->proc_map_timeout); | |
579 | out: | |
580 | return err; | |
581 | } | |
582 | ||
8c6f45a7 | 583 | static int __cmd_record(struct record *rec, int argc, const char **argv) |
16c8a109 | 584 | { |
57706abc | 585 | int err; |
45604710 | 586 | int status = 0; |
8b412664 | 587 | unsigned long waking = 0; |
46be604b | 588 | const bool forks = argc > 0; |
23346f21 | 589 | struct machine *machine; |
45694aa7 | 590 | struct perf_tool *tool = &rec->tool; |
b4006796 | 591 | struct record_opts *opts = &rec->opts; |
f5fc1412 | 592 | struct perf_data_file *file = &rec->file; |
d20deb64 | 593 | struct perf_session *session; |
6dcf45ef | 594 | bool disabled = false, draining = false; |
42aa276f | 595 | int fd; |
de9ac07b | 596 | |
d20deb64 | 597 | rec->progname = argv[0]; |
33e49ea7 | 598 | |
45604710 | 599 | atexit(record__sig_exit); |
f5970550 PZ |
600 | signal(SIGCHLD, sig_handler); |
601 | signal(SIGINT, sig_handler); | |
804f7ac7 | 602 | signal(SIGTERM, sig_handler); |
2dd6d8a1 AH |
603 | if (rec->opts.auxtrace_snapshot_mode) |
604 | signal(SIGUSR2, snapshot_sig_handler); | |
605 | else | |
606 | signal(SIGUSR2, SIG_IGN); | |
f5970550 | 607 | |
b7b61cbe | 608 | session = perf_session__new(file, false, tool); |
94c744b6 | 609 | if (session == NULL) { |
ffa91880 | 610 | pr_err("Perf session creation failed.\n"); |
a9a70bbc ACM |
611 | return -1; |
612 | } | |
613 | ||
42aa276f | 614 | fd = perf_data_file__fd(file); |
d20deb64 ACM |
615 | rec->session = session; |
616 | ||
8c6f45a7 | 617 | record__init_features(rec); |
330aa675 | 618 | |
d4db3f16 | 619 | if (forks) { |
3e2be2da | 620 | err = perf_evlist__prepare_workload(rec->evlist, &opts->target, |
f5fc1412 | 621 | argv, file->is_pipe, |
735f7e0b | 622 | workload_exec_failed_signal); |
35b9d88e ACM |
623 | if (err < 0) { |
624 | pr_err("Couldn't run the workload!\n"); | |
45604710 | 625 | status = err; |
35b9d88e | 626 | goto out_delete_session; |
856e9660 | 627 | } |
856e9660 PZ |
628 | } |
629 | ||
8c6f45a7 | 630 | if (record__open(rec) != 0) { |
8d3eca20 | 631 | err = -1; |
45604710 | 632 | goto out_child; |
8d3eca20 | 633 | } |
de9ac07b | 634 | |
8690a2a7 WN |
635 | err = bpf__apply_obj_config(); |
636 | if (err) { | |
637 | char errbuf[BUFSIZ]; | |
638 | ||
639 | bpf__strerror_apply_obj_config(err, errbuf, sizeof(errbuf)); | |
640 | pr_err("ERROR: Apply config to BPF failed: %s\n", | |
641 | errbuf); | |
642 | goto out_child; | |
643 | } | |
644 | ||
cca8482c AH |
645 | /* |
646 | * Normally perf_session__new would do this, but it doesn't have the | |
647 | * evlist. | |
648 | */ | |
649 | if (rec->tool.ordered_events && !perf_evlist__sample_id_all(rec->evlist)) { | |
650 | pr_warning("WARNING: No sample_id_all support, falling back to unordered processing\n"); | |
651 | rec->tool.ordered_events = false; | |
652 | } | |
653 | ||
3e2be2da | 654 | if (!rec->evlist->nr_groups) |
a8bb559b NK |
655 | perf_header__clear_feat(&session->header, HEADER_GROUP_DESC); |
656 | ||
f5fc1412 | 657 | if (file->is_pipe) { |
42aa276f | 658 | err = perf_header__write_pipe(fd); |
529870e3 | 659 | if (err < 0) |
45604710 | 660 | goto out_child; |
563aecb2 | 661 | } else { |
42aa276f | 662 | err = perf_session__write_header(session, rec->evlist, fd, false); |
d5eed904 | 663 | if (err < 0) |
45604710 | 664 | goto out_child; |
56b03f3c ACM |
665 | } |
666 | ||
d3665498 | 667 | if (!rec->no_buildid |
e20960c0 | 668 | && !perf_header__has_feat(&session->header, HEADER_BUILD_ID)) { |
d3665498 | 669 | pr_err("Couldn't generate buildids. " |
e20960c0 | 670 | "Use --no-buildid to profile anyway.\n"); |
8d3eca20 | 671 | err = -1; |
45604710 | 672 | goto out_child; |
e20960c0 RR |
673 | } |
674 | ||
34ba5122 | 675 | machine = &session->machines.host; |
743eb868 | 676 | |
c45c86eb WN |
677 | err = record__synthesize(rec); |
678 | if (err < 0) | |
45604710 | 679 | goto out_child; |
8d3eca20 | 680 | |
d20deb64 | 681 | if (rec->realtime_prio) { |
de9ac07b PZ |
682 | struct sched_param param; |
683 | ||
d20deb64 | 684 | param.sched_priority = rec->realtime_prio; |
de9ac07b | 685 | if (sched_setscheduler(0, SCHED_FIFO, ¶m)) { |
6beba7ad | 686 | pr_err("Could not set realtime priority.\n"); |
8d3eca20 | 687 | err = -1; |
45604710 | 688 | goto out_child; |
de9ac07b PZ |
689 | } |
690 | } | |
691 | ||
774cb499 JO |
692 | /* |
693 | * When perf is starting the traced process, all the events | |
694 | * (apart from group members) have enable_on_exec=1 set, | |
695 | * so don't spoil it by prematurely enabling them. | |
696 | */ | |
6619a53e | 697 | if (!target__none(&opts->target) && !opts->initial_delay) |
3e2be2da | 698 | perf_evlist__enable(rec->evlist); |
764e16a3 | 699 | |
856e9660 PZ |
700 | /* |
701 | * Let the child rip | |
702 | */ | |
e803cf97 | 703 | if (forks) { |
e5bed564 NK |
704 | union perf_event *event; |
705 | ||
706 | event = malloc(sizeof(event->comm) + machine->id_hdr_size); | |
707 | if (event == NULL) { | |
708 | err = -ENOMEM; | |
709 | goto out_child; | |
710 | } | |
711 | ||
e803cf97 NK |
712 | /* |
713 | * Some H/W events are generated before COMM event | |
714 | * which is emitted during exec(), so perf script | |
715 | * cannot see a correct process name for those events. | |
716 | * Synthesize COMM event to prevent it. | |
717 | */ | |
e5bed564 | 718 | perf_event__synthesize_comm(tool, event, |
e803cf97 NK |
719 | rec->evlist->workload.pid, |
720 | process_synthesized_event, | |
721 | machine); | |
e5bed564 | 722 | free(event); |
e803cf97 | 723 | |
3e2be2da | 724 | perf_evlist__start_workload(rec->evlist); |
e803cf97 | 725 | } |
856e9660 | 726 | |
6619a53e AK |
727 | if (opts->initial_delay) { |
728 | usleep(opts->initial_delay * 1000); | |
729 | perf_evlist__enable(rec->evlist); | |
730 | } | |
731 | ||
2dd6d8a1 | 732 | auxtrace_snapshot_enabled = 1; |
649c48a9 | 733 | for (;;) { |
9f065194 | 734 | unsigned long long hits = rec->samples; |
de9ac07b | 735 | |
8c6f45a7 | 736 | if (record__mmap_read_all(rec) < 0) { |
2dd6d8a1 | 737 | auxtrace_snapshot_enabled = 0; |
8d3eca20 | 738 | err = -1; |
45604710 | 739 | goto out_child; |
8d3eca20 | 740 | } |
de9ac07b | 741 | |
2dd6d8a1 AH |
742 | if (auxtrace_record__snapshot_started) { |
743 | auxtrace_record__snapshot_started = 0; | |
744 | if (!auxtrace_snapshot_err) | |
745 | record__read_auxtrace_snapshot(rec); | |
746 | if (auxtrace_snapshot_err) { | |
747 | pr_err("AUX area tracing snapshot failed\n"); | |
748 | err = -1; | |
749 | goto out_child; | |
750 | } | |
751 | } | |
752 | ||
d20deb64 | 753 | if (hits == rec->samples) { |
6dcf45ef | 754 | if (done || draining) |
649c48a9 | 755 | break; |
f66a889d | 756 | err = perf_evlist__poll(rec->evlist, -1); |
a515114f JO |
757 | /* |
758 | * Propagate error, only if there's any. Ignore positive | |
759 | * number of returned events and interrupt error. | |
760 | */ | |
761 | if (err > 0 || (err < 0 && errno == EINTR)) | |
45604710 | 762 | err = 0; |
8b412664 | 763 | waking++; |
6dcf45ef ACM |
764 | |
765 | if (perf_evlist__filter_pollfd(rec->evlist, POLLERR | POLLHUP) == 0) | |
766 | draining = true; | |
8b412664 PZ |
767 | } |
768 | ||
774cb499 JO |
769 | /* |
770 | * When perf is starting the traced process, at the end events | |
771 | * die with the process and we wait for that. Thus no need to | |
772 | * disable events in this case. | |
773 | */ | |
602ad878 | 774 | if (done && !disabled && !target__none(&opts->target)) { |
2dd6d8a1 | 775 | auxtrace_snapshot_enabled = 0; |
3e2be2da | 776 | perf_evlist__disable(rec->evlist); |
2711926a JO |
777 | disabled = true; |
778 | } | |
de9ac07b | 779 | } |
2dd6d8a1 | 780 | auxtrace_snapshot_enabled = 0; |
de9ac07b | 781 | |
f33cbe72 | 782 | if (forks && workload_exec_errno) { |
35550da3 | 783 | char msg[STRERR_BUFSIZE]; |
f33cbe72 ACM |
784 | const char *emsg = strerror_r(workload_exec_errno, msg, sizeof(msg)); |
785 | pr_err("Workload failed: %s\n", emsg); | |
786 | err = -1; | |
45604710 | 787 | goto out_child; |
f33cbe72 ACM |
788 | } |
789 | ||
e3d59112 | 790 | if (!quiet) |
45604710 | 791 | fprintf(stderr, "[ perf record: Woken up %ld times to write data ]\n", waking); |
b44308f5 | 792 | |
45604710 NK |
793 | out_child: |
794 | if (forks) { | |
795 | int exit_status; | |
addc2785 | 796 | |
45604710 NK |
797 | if (!child_finished) |
798 | kill(rec->evlist->workload.pid, SIGTERM); | |
799 | ||
800 | wait(&exit_status); | |
801 | ||
802 | if (err < 0) | |
803 | status = err; | |
804 | else if (WIFEXITED(exit_status)) | |
805 | status = WEXITSTATUS(exit_status); | |
806 | else if (WIFSIGNALED(exit_status)) | |
807 | signr = WTERMSIG(exit_status); | |
808 | } else | |
809 | status = err; | |
810 | ||
e3d59112 NK |
811 | /* this will be recalculated during process_buildids() */ |
812 | rec->samples = 0; | |
813 | ||
e1ab48ba WN |
814 | if (!err) |
815 | record__finish_output(rec); | |
39d17dac | 816 | |
e3d59112 NK |
817 | if (!err && !quiet) { |
818 | char samples[128]; | |
819 | ||
ef149c25 | 820 | if (rec->samples && !rec->opts.full_auxtrace) |
e3d59112 NK |
821 | scnprintf(samples, sizeof(samples), |
822 | " (%" PRIu64 " samples)", rec->samples); | |
823 | else | |
824 | samples[0] = '\0'; | |
825 | ||
826 | fprintf(stderr, "[ perf record: Captured and wrote %.3f MB %s%s ]\n", | |
827 | perf_data_file__size(file) / 1024.0 / 1024.0, | |
828 | file->path, samples); | |
829 | } | |
830 | ||
39d17dac ACM |
831 | out_delete_session: |
832 | perf_session__delete(session); | |
45604710 | 833 | return status; |
de9ac07b | 834 | } |
0e9b20b8 | 835 | |
72a128aa | 836 | static void callchain_debug(void) |
09b0fd45 | 837 | { |
aad2b21c | 838 | static const char *str[CALLCHAIN_MAX] = { "NONE", "FP", "DWARF", "LBR" }; |
a601fdff | 839 | |
72a128aa | 840 | pr_debug("callchain: type %s\n", str[callchain_param.record_mode]); |
26d33022 | 841 | |
72a128aa | 842 | if (callchain_param.record_mode == CALLCHAIN_DWARF) |
09b0fd45 | 843 | pr_debug("callchain: stack dump size %d\n", |
72a128aa | 844 | callchain_param.dump_size); |
09b0fd45 JO |
845 | } |
846 | ||
c421e80b | 847 | int record_parse_callchain_opt(const struct option *opt, |
09b0fd45 JO |
848 | const char *arg, |
849 | int unset) | |
850 | { | |
09b0fd45 | 851 | int ret; |
c421e80b | 852 | struct record_opts *record = (struct record_opts *)opt->value; |
09b0fd45 | 853 | |
c421e80b | 854 | record->callgraph_set = true; |
72a128aa | 855 | callchain_param.enabled = !unset; |
eb853e80 | 856 | |
09b0fd45 JO |
857 | /* --no-call-graph */ |
858 | if (unset) { | |
72a128aa | 859 | callchain_param.record_mode = CALLCHAIN_NONE; |
09b0fd45 JO |
860 | pr_debug("callchain: disabled\n"); |
861 | return 0; | |
862 | } | |
863 | ||
c3a6a8c4 | 864 | ret = parse_callchain_record_opt(arg, &callchain_param); |
5c0cf224 JO |
865 | if (!ret) { |
866 | /* Enable data address sampling for DWARF unwind. */ | |
867 | if (callchain_param.record_mode == CALLCHAIN_DWARF) | |
868 | record->sample_address = true; | |
72a128aa | 869 | callchain_debug(); |
5c0cf224 | 870 | } |
26d33022 JO |
871 | |
872 | return ret; | |
873 | } | |
874 | ||
c421e80b | 875 | int record_callchain_opt(const struct option *opt, |
09b0fd45 JO |
876 | const char *arg __maybe_unused, |
877 | int unset __maybe_unused) | |
878 | { | |
c421e80b KL |
879 | struct record_opts *record = (struct record_opts *)opt->value; |
880 | ||
881 | record->callgraph_set = true; | |
72a128aa | 882 | callchain_param.enabled = true; |
09b0fd45 | 883 | |
72a128aa NK |
884 | if (callchain_param.record_mode == CALLCHAIN_NONE) |
885 | callchain_param.record_mode = CALLCHAIN_FP; | |
eb853e80 | 886 | |
72a128aa | 887 | callchain_debug(); |
09b0fd45 JO |
888 | return 0; |
889 | } | |
890 | ||
eb853e80 JO |
891 | static int perf_record_config(const char *var, const char *value, void *cb) |
892 | { | |
7a29c087 NK |
893 | struct record *rec = cb; |
894 | ||
895 | if (!strcmp(var, "record.build-id")) { | |
896 | if (!strcmp(value, "cache")) | |
897 | rec->no_buildid_cache = false; | |
898 | else if (!strcmp(value, "no-cache")) | |
899 | rec->no_buildid_cache = true; | |
900 | else if (!strcmp(value, "skip")) | |
901 | rec->no_buildid = true; | |
902 | else | |
903 | return -1; | |
904 | return 0; | |
905 | } | |
eb853e80 | 906 | if (!strcmp(var, "record.call-graph")) |
5a2e5e85 | 907 | var = "call-graph.record-mode"; /* fall-through */ |
eb853e80 JO |
908 | |
909 | return perf_default_config(var, value, cb); | |
910 | } | |
911 | ||
814c8c38 PZ |
912 | struct clockid_map { |
913 | const char *name; | |
914 | int clockid; | |
915 | }; | |
916 | ||
917 | #define CLOCKID_MAP(n, c) \ | |
918 | { .name = n, .clockid = (c), } | |
919 | ||
920 | #define CLOCKID_END { .name = NULL, } | |
921 | ||
922 | ||
923 | /* | |
924 | * Add the missing ones, we need to build on many distros... | |
925 | */ | |
926 | #ifndef CLOCK_MONOTONIC_RAW | |
927 | #define CLOCK_MONOTONIC_RAW 4 | |
928 | #endif | |
929 | #ifndef CLOCK_BOOTTIME | |
930 | #define CLOCK_BOOTTIME 7 | |
931 | #endif | |
932 | #ifndef CLOCK_TAI | |
933 | #define CLOCK_TAI 11 | |
934 | #endif | |
935 | ||
936 | static const struct clockid_map clockids[] = { | |
937 | /* available for all events, NMI safe */ | |
938 | CLOCKID_MAP("monotonic", CLOCK_MONOTONIC), | |
939 | CLOCKID_MAP("monotonic_raw", CLOCK_MONOTONIC_RAW), | |
940 | ||
941 | /* available for some events */ | |
942 | CLOCKID_MAP("realtime", CLOCK_REALTIME), | |
943 | CLOCKID_MAP("boottime", CLOCK_BOOTTIME), | |
944 | CLOCKID_MAP("tai", CLOCK_TAI), | |
945 | ||
946 | /* available for the lazy */ | |
947 | CLOCKID_MAP("mono", CLOCK_MONOTONIC), | |
948 | CLOCKID_MAP("raw", CLOCK_MONOTONIC_RAW), | |
949 | CLOCKID_MAP("real", CLOCK_REALTIME), | |
950 | CLOCKID_MAP("boot", CLOCK_BOOTTIME), | |
951 | ||
952 | CLOCKID_END, | |
953 | }; | |
954 | ||
955 | static int parse_clockid(const struct option *opt, const char *str, int unset) | |
956 | { | |
957 | struct record_opts *opts = (struct record_opts *)opt->value; | |
958 | const struct clockid_map *cm; | |
959 | const char *ostr = str; | |
960 | ||
961 | if (unset) { | |
962 | opts->use_clockid = 0; | |
963 | return 0; | |
964 | } | |
965 | ||
966 | /* no arg passed */ | |
967 | if (!str) | |
968 | return 0; | |
969 | ||
970 | /* no setting it twice */ | |
971 | if (opts->use_clockid) | |
972 | return -1; | |
973 | ||
974 | opts->use_clockid = true; | |
975 | ||
976 | /* if its a number, we're done */ | |
977 | if (sscanf(str, "%d", &opts->clockid) == 1) | |
978 | return 0; | |
979 | ||
980 | /* allow a "CLOCK_" prefix to the name */ | |
981 | if (!strncasecmp(str, "CLOCK_", 6)) | |
982 | str += 6; | |
983 | ||
984 | for (cm = clockids; cm->name; cm++) { | |
985 | if (!strcasecmp(str, cm->name)) { | |
986 | opts->clockid = cm->clockid; | |
987 | return 0; | |
988 | } | |
989 | } | |
990 | ||
991 | opts->use_clockid = false; | |
992 | ui__warning("unknown clockid %s, check man page\n", ostr); | |
993 | return -1; | |
994 | } | |
995 | ||
e9db1310 AH |
996 | static int record__parse_mmap_pages(const struct option *opt, |
997 | const char *str, | |
998 | int unset __maybe_unused) | |
999 | { | |
1000 | struct record_opts *opts = opt->value; | |
1001 | char *s, *p; | |
1002 | unsigned int mmap_pages; | |
1003 | int ret; | |
1004 | ||
1005 | if (!str) | |
1006 | return -EINVAL; | |
1007 | ||
1008 | s = strdup(str); | |
1009 | if (!s) | |
1010 | return -ENOMEM; | |
1011 | ||
1012 | p = strchr(s, ','); | |
1013 | if (p) | |
1014 | *p = '\0'; | |
1015 | ||
1016 | if (*s) { | |
1017 | ret = __perf_evlist__parse_mmap_pages(&mmap_pages, s); | |
1018 | if (ret) | |
1019 | goto out_free; | |
1020 | opts->mmap_pages = mmap_pages; | |
1021 | } | |
1022 | ||
1023 | if (!p) { | |
1024 | ret = 0; | |
1025 | goto out_free; | |
1026 | } | |
1027 | ||
1028 | ret = __perf_evlist__parse_mmap_pages(&mmap_pages, p + 1); | |
1029 | if (ret) | |
1030 | goto out_free; | |
1031 | ||
1032 | opts->auxtrace_mmap_pages = mmap_pages; | |
1033 | ||
1034 | out_free: | |
1035 | free(s); | |
1036 | return ret; | |
1037 | } | |
1038 | ||
e5b2c207 | 1039 | static const char * const __record_usage[] = { |
9e096753 MG |
1040 | "perf record [<options>] [<command>]", |
1041 | "perf record [<options>] -- <command> [<options>]", | |
0e9b20b8 IM |
1042 | NULL |
1043 | }; | |
e5b2c207 | 1044 | const char * const *record_usage = __record_usage; |
0e9b20b8 | 1045 | |
d20deb64 | 1046 | /* |
8c6f45a7 ACM |
1047 | * XXX Ideally would be local to cmd_record() and passed to a record__new |
1048 | * because we need to have access to it in record__exit, that is called | |
d20deb64 ACM |
1049 | * after cmd_record() exits, but since record_options need to be accessible to |
1050 | * builtin-script, leave it here. | |
1051 | * | |
1052 | * At least we don't ouch it in all the other functions here directly. | |
1053 | * | |
1054 | * Just say no to tons of global variables, sigh. | |
1055 | */ | |
8c6f45a7 | 1056 | static struct record record = { |
d20deb64 | 1057 | .opts = { |
8affc2b8 | 1058 | .sample_time = true, |
d20deb64 ACM |
1059 | .mmap_pages = UINT_MAX, |
1060 | .user_freq = UINT_MAX, | |
1061 | .user_interval = ULLONG_MAX, | |
447a6013 | 1062 | .freq = 4000, |
d1cb9fce NK |
1063 | .target = { |
1064 | .uses_mmap = true, | |
3aa5939d | 1065 | .default_per_cpu = true, |
d1cb9fce | 1066 | }, |
9d9cad76 | 1067 | .proc_map_timeout = 500, |
d20deb64 | 1068 | }, |
e3d59112 NK |
1069 | .tool = { |
1070 | .sample = process_sample_event, | |
1071 | .fork = perf_event__process_fork, | |
cca8482c | 1072 | .exit = perf_event__process_exit, |
e3d59112 NK |
1073 | .comm = perf_event__process_comm, |
1074 | .mmap = perf_event__process_mmap, | |
1075 | .mmap2 = perf_event__process_mmap2, | |
cca8482c | 1076 | .ordered_events = true, |
e3d59112 | 1077 | }, |
d20deb64 | 1078 | }; |
7865e817 | 1079 | |
76a26549 NK |
1080 | const char record_callchain_help[] = CALLCHAIN_RECORD_HELP |
1081 | "\n\t\t\t\tDefault: fp"; | |
61eaa3be | 1082 | |
d20deb64 ACM |
1083 | /* |
1084 | * XXX Will stay a global variable till we fix builtin-script.c to stop messing | |
1085 | * with it and switch to use the library functions in perf_evlist that came | |
b4006796 | 1086 | * from builtin-record.c, i.e. use record_opts, |
d20deb64 ACM |
1087 | * perf_evlist__prepare_workload, etc instead of fork+exec'in 'perf record', |
1088 | * using pipes, etc. | |
1089 | */ | |
e5b2c207 | 1090 | struct option __record_options[] = { |
d20deb64 | 1091 | OPT_CALLBACK('e', "event", &record.evlist, "event", |
86847b62 | 1092 | "event selector. use 'perf list' to list available events", |
f120f9d5 | 1093 | parse_events_option), |
d20deb64 | 1094 | OPT_CALLBACK(0, "filter", &record.evlist, "filter", |
c171b552 | 1095 | "event filter", parse_filter), |
4ba1faa1 WN |
1096 | OPT_CALLBACK_NOOPT(0, "exclude-perf", &record.evlist, |
1097 | NULL, "don't record events from perf itself", | |
1098 | exclude_perf), | |
bea03405 | 1099 | OPT_STRING('p', "pid", &record.opts.target.pid, "pid", |
d6d901c2 | 1100 | "record events on existing process id"), |
bea03405 | 1101 | OPT_STRING('t', "tid", &record.opts.target.tid, "tid", |
d6d901c2 | 1102 | "record events on existing thread id"), |
d20deb64 | 1103 | OPT_INTEGER('r', "realtime", &record.realtime_prio, |
0e9b20b8 | 1104 | "collect data with this RT SCHED_FIFO priority"), |
509051ea | 1105 | OPT_BOOLEAN(0, "no-buffering", &record.opts.no_buffering, |
acac03fa | 1106 | "collect data without buffering"), |
d20deb64 | 1107 | OPT_BOOLEAN('R', "raw-samples", &record.opts.raw_samples, |
daac07b2 | 1108 | "collect raw sample records from all opened counters"), |
bea03405 | 1109 | OPT_BOOLEAN('a', "all-cpus", &record.opts.target.system_wide, |
0e9b20b8 | 1110 | "system-wide collection from all CPUs"), |
bea03405 | 1111 | OPT_STRING('C', "cpu", &record.opts.target.cpu_list, "cpu", |
c45c6ea2 | 1112 | "list of cpus to monitor"), |
d20deb64 | 1113 | OPT_U64('c', "count", &record.opts.user_interval, "event period to sample"), |
f5fc1412 | 1114 | OPT_STRING('o', "output", &record.file.path, "file", |
abaff32a | 1115 | "output file name"), |
69e7e5b0 AH |
1116 | OPT_BOOLEAN_SET('i', "no-inherit", &record.opts.no_inherit, |
1117 | &record.opts.no_inherit_set, | |
1118 | "child tasks do not inherit counters"), | |
d20deb64 | 1119 | OPT_UINTEGER('F', "freq", &record.opts.user_freq, "profile at this frequency"), |
e9db1310 AH |
1120 | OPT_CALLBACK('m', "mmap-pages", &record.opts, "pages[,pages]", |
1121 | "number of mmap data pages and AUX area tracing mmap pages", | |
1122 | record__parse_mmap_pages), | |
d20deb64 | 1123 | OPT_BOOLEAN(0, "group", &record.opts.group, |
43bece79 | 1124 | "put the counters into a counter group"), |
09b0fd45 JO |
1125 | OPT_CALLBACK_NOOPT('g', NULL, &record.opts, |
1126 | NULL, "enables call-graph recording" , | |
1127 | &record_callchain_opt), | |
1128 | OPT_CALLBACK(0, "call-graph", &record.opts, | |
76a26549 | 1129 | "record_mode[,record_size]", record_callchain_help, |
09b0fd45 | 1130 | &record_parse_callchain_opt), |
c0555642 | 1131 | OPT_INCR('v', "verbose", &verbose, |
3da297a6 | 1132 | "be more verbose (show counter open errors, etc)"), |
b44308f5 | 1133 | OPT_BOOLEAN('q', "quiet", &quiet, "don't print any message"), |
d20deb64 | 1134 | OPT_BOOLEAN('s', "stat", &record.opts.inherit_stat, |
649c48a9 | 1135 | "per thread counts"), |
56100321 | 1136 | OPT_BOOLEAN('d', "data", &record.opts.sample_address, "Record the sample addresses"), |
3abebc55 AH |
1137 | OPT_BOOLEAN_SET('T', "timestamp", &record.opts.sample_time, |
1138 | &record.opts.sample_time_set, | |
1139 | "Record the sample timestamps"), | |
56100321 | 1140 | OPT_BOOLEAN('P', "period", &record.opts.period, "Record the sample period"), |
d20deb64 | 1141 | OPT_BOOLEAN('n', "no-samples", &record.opts.no_samples, |
649c48a9 | 1142 | "don't sample"), |
d2db9a98 WN |
1143 | OPT_BOOLEAN_SET('N', "no-buildid-cache", &record.no_buildid_cache, |
1144 | &record.no_buildid_cache_set, | |
1145 | "do not update the buildid cache"), | |
1146 | OPT_BOOLEAN_SET('B', "no-buildid", &record.no_buildid, | |
1147 | &record.no_buildid_set, | |
1148 | "do not collect buildids in perf.data"), | |
d20deb64 | 1149 | OPT_CALLBACK('G', "cgroup", &record.evlist, "name", |
023695d9 SE |
1150 | "monitor event in cgroup name only", |
1151 | parse_cgroups), | |
a6205a35 | 1152 | OPT_UINTEGER('D', "delay", &record.opts.initial_delay, |
6619a53e | 1153 | "ms to wait before starting measurement after program start"), |
bea03405 NK |
1154 | OPT_STRING('u', "uid", &record.opts.target.uid_str, "user", |
1155 | "user to profile"), | |
a5aabdac SE |
1156 | |
1157 | OPT_CALLBACK_NOOPT('b', "branch-any", &record.opts.branch_stack, | |
1158 | "branch any", "sample any taken branches", | |
1159 | parse_branch_stack), | |
1160 | ||
1161 | OPT_CALLBACK('j', "branch-filter", &record.opts.branch_stack, | |
1162 | "branch filter mask", "branch stack filter modes", | |
bdfebd84 | 1163 | parse_branch_stack), |
05484298 AK |
1164 | OPT_BOOLEAN('W', "weight", &record.opts.sample_weight, |
1165 | "sample by weight (on special events only)"), | |
475eeab9 AK |
1166 | OPT_BOOLEAN(0, "transaction", &record.opts.sample_transaction, |
1167 | "sample transaction flags (special events only)"), | |
3aa5939d AH |
1168 | OPT_BOOLEAN(0, "per-thread", &record.opts.target.per_thread, |
1169 | "use per-thread mmaps"), | |
bcc84ec6 SE |
1170 | OPT_CALLBACK_OPTARG('I', "intr-regs", &record.opts.sample_intr_regs, NULL, "any register", |
1171 | "sample selected machine registers on interrupt," | |
1172 | " use -I ? to list register names", parse_regs), | |
85c273d2 AK |
1173 | OPT_BOOLEAN(0, "running-time", &record.opts.running_time, |
1174 | "Record running/enabled time of read (:S) events"), | |
814c8c38 PZ |
1175 | OPT_CALLBACK('k', "clockid", &record.opts, |
1176 | "clockid", "clockid to use for events, see clock_gettime()", | |
1177 | parse_clockid), | |
2dd6d8a1 AH |
1178 | OPT_STRING_OPTARG('S', "snapshot", &record.opts.auxtrace_snapshot_opts, |
1179 | "opts", "AUX area tracing Snapshot Mode", ""), | |
9d9cad76 KL |
1180 | OPT_UINTEGER(0, "proc-map-timeout", &record.opts.proc_map_timeout, |
1181 | "per thread proc mmap processing timeout in ms"), | |
b757bb09 AH |
1182 | OPT_BOOLEAN(0, "switch-events", &record.opts.record_switch_events, |
1183 | "Record context switch events"), | |
85723885 JO |
1184 | OPT_BOOLEAN_FLAG(0, "all-kernel", &record.opts.all_kernel, |
1185 | "Configure all used events to run in kernel space.", | |
1186 | PARSE_OPT_EXCLUSIVE), | |
1187 | OPT_BOOLEAN_FLAG(0, "all-user", &record.opts.all_user, | |
1188 | "Configure all used events to run in user space.", | |
1189 | PARSE_OPT_EXCLUSIVE), | |
71dc2326 WN |
1190 | OPT_STRING(0, "clang-path", &llvm_param.clang_path, "clang path", |
1191 | "clang binary to use for compiling BPF scriptlets"), | |
1192 | OPT_STRING(0, "clang-opt", &llvm_param.clang_opt, "clang options", | |
1193 | "options passed to clang when compiling BPF scriptlets"), | |
7efe0e03 HK |
1194 | OPT_STRING(0, "vmlinux", &symbol_conf.vmlinux_name, |
1195 | "file", "vmlinux pathname"), | |
6156681b NK |
1196 | OPT_BOOLEAN(0, "buildid-all", &record.buildid_all, |
1197 | "Record build-id of all DSOs regardless of hits"), | |
0e9b20b8 IM |
1198 | OPT_END() |
1199 | }; | |
1200 | ||
e5b2c207 NK |
1201 | struct option *record_options = __record_options; |
1202 | ||
1d037ca1 | 1203 | int cmd_record(int argc, const char **argv, const char *prefix __maybe_unused) |
0e9b20b8 | 1204 | { |
ef149c25 | 1205 | int err; |
8c6f45a7 | 1206 | struct record *rec = &record; |
16ad2ffb | 1207 | char errbuf[BUFSIZ]; |
0e9b20b8 | 1208 | |
48e1cab1 WN |
1209 | #ifndef HAVE_LIBBPF_SUPPORT |
1210 | # define set_nobuild(s, l, c) set_option_nobuild(record_options, s, l, "NO_LIBBPF=1", c) | |
1211 | set_nobuild('\0', "clang-path", true); | |
1212 | set_nobuild('\0', "clang-opt", true); | |
1213 | # undef set_nobuild | |
7efe0e03 HK |
1214 | #endif |
1215 | ||
1216 | #ifndef HAVE_BPF_PROLOGUE | |
1217 | # if !defined (HAVE_DWARF_SUPPORT) | |
1218 | # define REASON "NO_DWARF=1" | |
1219 | # elif !defined (HAVE_LIBBPF_SUPPORT) | |
1220 | # define REASON "NO_LIBBPF=1" | |
1221 | # else | |
1222 | # define REASON "this architecture doesn't support BPF prologue" | |
1223 | # endif | |
1224 | # define set_nobuild(s, l, c) set_option_nobuild(record_options, s, l, REASON, c) | |
1225 | set_nobuild('\0', "vmlinux", true); | |
1226 | # undef set_nobuild | |
1227 | # undef REASON | |
48e1cab1 WN |
1228 | #endif |
1229 | ||
3e2be2da ACM |
1230 | rec->evlist = perf_evlist__new(); |
1231 | if (rec->evlist == NULL) | |
361c99a6 ACM |
1232 | return -ENOMEM; |
1233 | ||
eb853e80 JO |
1234 | perf_config(perf_record_config, rec); |
1235 | ||
bca647aa | 1236 | argc = parse_options(argc, argv, record_options, record_usage, |
655000e7 | 1237 | PARSE_OPT_STOP_AT_NON_OPTION); |
602ad878 | 1238 | if (!argc && target__none(&rec->opts.target)) |
bca647aa | 1239 | usage_with_options(record_usage, record_options); |
0e9b20b8 | 1240 | |
bea03405 | 1241 | if (nr_cgroups && !rec->opts.target.system_wide) { |
c7118369 NK |
1242 | usage_with_options_msg(record_usage, record_options, |
1243 | "cgroup monitoring only available in system-wide mode"); | |
1244 | ||
023695d9 | 1245 | } |
b757bb09 AH |
1246 | if (rec->opts.record_switch_events && |
1247 | !perf_can_record_switch_events()) { | |
c7118369 NK |
1248 | ui__error("kernel does not support recording context switch events\n"); |
1249 | parse_options_usage(record_usage, record_options, "switch-events", 0); | |
1250 | return -EINVAL; | |
b757bb09 | 1251 | } |
023695d9 | 1252 | |
ef149c25 AH |
1253 | if (!rec->itr) { |
1254 | rec->itr = auxtrace_record__init(rec->evlist, &err); | |
1255 | if (err) | |
1256 | return err; | |
1257 | } | |
1258 | ||
2dd6d8a1 AH |
1259 | err = auxtrace_parse_snapshot_options(rec->itr, &rec->opts, |
1260 | rec->opts.auxtrace_snapshot_opts); | |
1261 | if (err) | |
1262 | return err; | |
1263 | ||
ef149c25 AH |
1264 | err = -ENOMEM; |
1265 | ||
0a7e6d1b | 1266 | symbol__init(NULL); |
baa2f6ce | 1267 | |
ec80fde7 | 1268 | if (symbol_conf.kptr_restrict) |
646aaea6 ACM |
1269 | pr_warning( |
1270 | "WARNING: Kernel address maps (/proc/{kallsyms,modules}) are restricted,\n" | |
1271 | "check /proc/sys/kernel/kptr_restrict.\n\n" | |
1272 | "Samples in kernel functions may not be resolved if a suitable vmlinux\n" | |
1273 | "file is not found in the buildid cache or in the vmlinux path.\n\n" | |
1274 | "Samples in kernel modules won't be resolved at all.\n\n" | |
1275 | "If some relocation was applied (e.g. kexec) symbols may be misresolved\n" | |
1276 | "even with a suitable vmlinux or kallsyms file.\n\n"); | |
ec80fde7 | 1277 | |
d20deb64 | 1278 | if (rec->no_buildid_cache || rec->no_buildid) |
a1ac1d3c | 1279 | disable_buildid_cache(); |
655000e7 | 1280 | |
3e2be2da ACM |
1281 | if (rec->evlist->nr_entries == 0 && |
1282 | perf_evlist__add_default(rec->evlist) < 0) { | |
69aad6f1 ACM |
1283 | pr_err("Not enough memory for event selector list\n"); |
1284 | goto out_symbol_exit; | |
bbd36e5e | 1285 | } |
0e9b20b8 | 1286 | |
69e7e5b0 AH |
1287 | if (rec->opts.target.tid && !rec->opts.no_inherit_set) |
1288 | rec->opts.no_inherit = true; | |
1289 | ||
602ad878 | 1290 | err = target__validate(&rec->opts.target); |
16ad2ffb | 1291 | if (err) { |
602ad878 | 1292 | target__strerror(&rec->opts.target, err, errbuf, BUFSIZ); |
16ad2ffb NK |
1293 | ui__warning("%s", errbuf); |
1294 | } | |
1295 | ||
602ad878 | 1296 | err = target__parse_uid(&rec->opts.target); |
16ad2ffb NK |
1297 | if (err) { |
1298 | int saved_errno = errno; | |
4bd0f2d2 | 1299 | |
602ad878 | 1300 | target__strerror(&rec->opts.target, err, errbuf, BUFSIZ); |
3780f488 | 1301 | ui__error("%s", errbuf); |
16ad2ffb NK |
1302 | |
1303 | err = -saved_errno; | |
8fa60e1f | 1304 | goto out_symbol_exit; |
16ad2ffb | 1305 | } |
0d37aa34 | 1306 | |
16ad2ffb | 1307 | err = -ENOMEM; |
3e2be2da | 1308 | if (perf_evlist__create_maps(rec->evlist, &rec->opts.target) < 0) |
dd7927f4 | 1309 | usage_with_options(record_usage, record_options); |
69aad6f1 | 1310 | |
ef149c25 AH |
1311 | err = auxtrace_record__options(rec->itr, rec->evlist, &rec->opts); |
1312 | if (err) | |
1313 | goto out_symbol_exit; | |
1314 | ||
6156681b NK |
1315 | /* |
1316 | * We take all buildids when the file contains | |
1317 | * AUX area tracing data because we do not decode the | |
1318 | * trace because it would take too long. | |
1319 | */ | |
1320 | if (rec->opts.full_auxtrace) | |
1321 | rec->buildid_all = true; | |
1322 | ||
b4006796 | 1323 | if (record_opts__config(&rec->opts)) { |
39d17dac | 1324 | err = -EINVAL; |
03ad9747 | 1325 | goto out_symbol_exit; |
7e4ff9e3 MG |
1326 | } |
1327 | ||
d20deb64 | 1328 | err = __cmd_record(&record, argc, argv); |
d65a458b | 1329 | out_symbol_exit: |
45604710 | 1330 | perf_evlist__delete(rec->evlist); |
d65a458b | 1331 | symbol__exit(); |
ef149c25 | 1332 | auxtrace_record__free(rec->itr); |
39d17dac | 1333 | return err; |
0e9b20b8 | 1334 | } |
2dd6d8a1 AH |
1335 | |
1336 | static void snapshot_sig_handler(int sig __maybe_unused) | |
1337 | { | |
1338 | if (!auxtrace_snapshot_enabled) | |
1339 | return; | |
1340 | auxtrace_snapshot_enabled = 0; | |
1341 | auxtrace_snapshot_err = auxtrace_record__snapshot_start(record.itr); | |
1342 | auxtrace_record__snapshot_started = 1; | |
1343 | } |