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" |
41840d21 | 16 | #include "util/config.h" |
6eda5838 | 17 | |
8f651eae | 18 | #include "util/callchain.h" |
f14d5707 | 19 | #include "util/cgroup.h" |
7c6a1c65 | 20 | #include "util/header.h" |
66e274f3 | 21 | #include "util/event.h" |
361c99a6 | 22 | #include "util/evlist.h" |
69aad6f1 | 23 | #include "util/evsel.h" |
8f28827a | 24 | #include "util/debug.h" |
94c744b6 | 25 | #include "util/session.h" |
45694aa7 | 26 | #include "util/tool.h" |
8d06367f | 27 | #include "util/symbol.h" |
a12b51c4 | 28 | #include "util/cpumap.h" |
fd78260b | 29 | #include "util/thread_map.h" |
f5fc1412 | 30 | #include "util/data.h" |
bcc84ec6 | 31 | #include "util/perf_regs.h" |
ef149c25 | 32 | #include "util/auxtrace.h" |
46bc29b9 | 33 | #include "util/tsc.h" |
f00898f4 | 34 | #include "util/parse-branch-options.h" |
bcc84ec6 | 35 | #include "util/parse-regs-options.h" |
71dc2326 | 36 | #include "util/llvm-utils.h" |
8690a2a7 | 37 | #include "util/bpf-loader.h" |
5f9cf599 | 38 | #include "util/trigger.h" |
d8871ea7 | 39 | #include "asm/bug.h" |
7c6a1c65 | 40 | |
97124d5e | 41 | #include <unistd.h> |
de9ac07b | 42 | #include <sched.h> |
a41794cd | 43 | #include <sys/mman.h> |
2d11c650 | 44 | #include <asm/bug.h> |
de9ac07b | 45 | |
78da39fa | 46 | |
8c6f45a7 | 47 | struct record { |
45694aa7 | 48 | struct perf_tool tool; |
b4006796 | 49 | struct record_opts opts; |
d20deb64 | 50 | u64 bytes_written; |
f5fc1412 | 51 | struct perf_data_file file; |
ef149c25 | 52 | struct auxtrace_record *itr; |
d20deb64 ACM |
53 | struct perf_evlist *evlist; |
54 | struct perf_session *session; | |
55 | const char *progname; | |
d20deb64 | 56 | int realtime_prio; |
d20deb64 | 57 | bool no_buildid; |
d2db9a98 | 58 | bool no_buildid_set; |
d20deb64 | 59 | bool no_buildid_cache; |
d2db9a98 | 60 | bool no_buildid_cache_set; |
6156681b | 61 | bool buildid_all; |
ecfd7a9c | 62 | bool timestamp_filename; |
3c1cb7e3 | 63 | bool switch_output; |
9f065194 | 64 | unsigned long long samples; |
0f82ebc4 | 65 | }; |
a21ca2ca | 66 | |
8c6f45a7 | 67 | static int record__write(struct record *rec, void *bf, size_t size) |
f5970550 | 68 | { |
cf8b2e69 | 69 | if (perf_data_file__write(rec->session->file, bf, size) < 0) { |
50a9b868 JO |
70 | pr_err("failed to write perf data, error: %m\n"); |
71 | return -1; | |
f5970550 | 72 | } |
8d3eca20 | 73 | |
cf8b2e69 | 74 | rec->bytes_written += size; |
8d3eca20 | 75 | return 0; |
f5970550 PZ |
76 | } |
77 | ||
45694aa7 | 78 | static int process_synthesized_event(struct perf_tool *tool, |
d20deb64 | 79 | union perf_event *event, |
1d037ca1 IT |
80 | struct perf_sample *sample __maybe_unused, |
81 | struct machine *machine __maybe_unused) | |
234fbbf5 | 82 | { |
8c6f45a7 ACM |
83 | struct record *rec = container_of(tool, struct record, tool); |
84 | return record__write(rec, event, event->header.size); | |
234fbbf5 ACM |
85 | } |
86 | ||
3a62a7b8 WN |
87 | static int |
88 | backward_rb_find_range(void *buf, int mask, u64 head, u64 *start, u64 *end) | |
89 | { | |
90 | struct perf_event_header *pheader; | |
91 | u64 evt_head = head; | |
92 | int size = mask + 1; | |
93 | ||
94 | pr_debug2("backward_rb_find_range: buf=%p, head=%"PRIx64"\n", buf, head); | |
95 | pheader = (struct perf_event_header *)(buf + (head & mask)); | |
96 | *start = head; | |
97 | while (true) { | |
98 | if (evt_head - head >= (unsigned int)size) { | |
99 | pr_debug("Finshed reading backward ring buffer: rewind\n"); | |
100 | if (evt_head - head > (unsigned int)size) | |
101 | evt_head -= pheader->size; | |
102 | *end = evt_head; | |
103 | return 0; | |
104 | } | |
105 | ||
106 | pheader = (struct perf_event_header *)(buf + (evt_head & mask)); | |
107 | ||
108 | if (pheader->size == 0) { | |
109 | pr_debug("Finshed reading backward ring buffer: get start\n"); | |
110 | *end = evt_head; | |
111 | return 0; | |
112 | } | |
113 | ||
114 | evt_head += pheader->size; | |
115 | pr_debug3("move evt_head: %"PRIx64"\n", evt_head); | |
116 | } | |
117 | WARN_ONCE(1, "Shouldn't get here\n"); | |
118 | return -1; | |
119 | } | |
120 | ||
121 | static int | |
122 | rb_find_range(struct perf_evlist *evlist, | |
123 | void *data, int mask, u64 head, u64 old, | |
124 | u64 *start, u64 *end) | |
125 | { | |
126 | if (!evlist->backward) { | |
127 | *start = old; | |
128 | *end = head; | |
129 | return 0; | |
130 | } | |
131 | ||
132 | return backward_rb_find_range(data, mask, head, start, end); | |
133 | } | |
134 | ||
e5685730 | 135 | static int record__mmap_read(struct record *rec, int idx) |
de9ac07b | 136 | { |
e5685730 | 137 | struct perf_mmap *md = &rec->evlist->mmap[idx]; |
7b8283b5 DA |
138 | u64 head = perf_mmap__read_head(md); |
139 | u64 old = md->prev; | |
09fa4f40 | 140 | u64 end = head, start = old; |
918512b4 | 141 | unsigned char *data = md->base + page_size; |
de9ac07b PZ |
142 | unsigned long size; |
143 | void *buf; | |
8d3eca20 | 144 | int rc = 0; |
de9ac07b | 145 | |
3a62a7b8 WN |
146 | if (rb_find_range(rec->evlist, data, md->mask, head, |
147 | old, &start, &end)) | |
148 | return -1; | |
149 | ||
09fa4f40 | 150 | if (start == end) |
8d3eca20 | 151 | return 0; |
dc82009a | 152 | |
d20deb64 | 153 | rec->samples++; |
de9ac07b | 154 | |
09fa4f40 | 155 | size = end - start; |
2d11c650 WN |
156 | if (size > (unsigned long)(md->mask) + 1) { |
157 | WARN_ONCE(1, "failed to keep up with mmap data. (warn only once)\n"); | |
158 | ||
159 | md->prev = head; | |
160 | perf_evlist__mmap_consume(rec->evlist, idx); | |
161 | return 0; | |
162 | } | |
de9ac07b | 163 | |
09fa4f40 WN |
164 | if ((start & md->mask) + size != (end & md->mask)) { |
165 | buf = &data[start & md->mask]; | |
166 | size = md->mask + 1 - (start & md->mask); | |
167 | start += size; | |
021e9f47 | 168 | |
8c6f45a7 | 169 | if (record__write(rec, buf, size) < 0) { |
8d3eca20 DA |
170 | rc = -1; |
171 | goto out; | |
172 | } | |
de9ac07b PZ |
173 | } |
174 | ||
09fa4f40 WN |
175 | buf = &data[start & md->mask]; |
176 | size = end - start; | |
177 | start += size; | |
021e9f47 | 178 | |
8c6f45a7 | 179 | if (record__write(rec, buf, size) < 0) { |
8d3eca20 DA |
180 | rc = -1; |
181 | goto out; | |
182 | } | |
de9ac07b | 183 | |
09fa4f40 | 184 | md->prev = head; |
e5685730 | 185 | perf_evlist__mmap_consume(rec->evlist, idx); |
8d3eca20 DA |
186 | out: |
187 | return rc; | |
de9ac07b PZ |
188 | } |
189 | ||
2dd6d8a1 AH |
190 | static volatile int done; |
191 | static volatile int signr = -1; | |
192 | static volatile int child_finished; | |
c0bdc1c4 | 193 | |
2dd6d8a1 | 194 | static volatile int auxtrace_record__snapshot_started; |
5f9cf599 | 195 | static DEFINE_TRIGGER(auxtrace_snapshot_trigger); |
3c1cb7e3 | 196 | static DEFINE_TRIGGER(switch_output_trigger); |
2dd6d8a1 AH |
197 | |
198 | static void sig_handler(int sig) | |
199 | { | |
200 | if (sig == SIGCHLD) | |
201 | child_finished = 1; | |
202 | else | |
203 | signr = sig; | |
204 | ||
205 | done = 1; | |
206 | } | |
207 | ||
208 | static void record__sig_exit(void) | |
209 | { | |
210 | if (signr == -1) | |
211 | return; | |
212 | ||
213 | signal(signr, SIG_DFL); | |
214 | raise(signr); | |
215 | } | |
216 | ||
e31f0d01 AH |
217 | #ifdef HAVE_AUXTRACE_SUPPORT |
218 | ||
ef149c25 AH |
219 | static int record__process_auxtrace(struct perf_tool *tool, |
220 | union perf_event *event, void *data1, | |
221 | size_t len1, void *data2, size_t len2) | |
222 | { | |
223 | struct record *rec = container_of(tool, struct record, tool); | |
99fa2984 | 224 | struct perf_data_file *file = &rec->file; |
ef149c25 AH |
225 | size_t padding; |
226 | u8 pad[8] = {0}; | |
227 | ||
99fa2984 AH |
228 | if (!perf_data_file__is_pipe(file)) { |
229 | off_t file_offset; | |
230 | int fd = perf_data_file__fd(file); | |
231 | int err; | |
232 | ||
233 | file_offset = lseek(fd, 0, SEEK_CUR); | |
234 | if (file_offset == -1) | |
235 | return -1; | |
236 | err = auxtrace_index__auxtrace_event(&rec->session->auxtrace_index, | |
237 | event, file_offset); | |
238 | if (err) | |
239 | return err; | |
240 | } | |
241 | ||
ef149c25 AH |
242 | /* event.auxtrace.size includes padding, see __auxtrace_mmap__read() */ |
243 | padding = (len1 + len2) & 7; | |
244 | if (padding) | |
245 | padding = 8 - padding; | |
246 | ||
247 | record__write(rec, event, event->header.size); | |
248 | record__write(rec, data1, len1); | |
249 | if (len2) | |
250 | record__write(rec, data2, len2); | |
251 | record__write(rec, &pad, padding); | |
252 | ||
253 | return 0; | |
254 | } | |
255 | ||
256 | static int record__auxtrace_mmap_read(struct record *rec, | |
257 | struct auxtrace_mmap *mm) | |
258 | { | |
259 | int ret; | |
260 | ||
261 | ret = auxtrace_mmap__read(mm, rec->itr, &rec->tool, | |
262 | record__process_auxtrace); | |
263 | if (ret < 0) | |
264 | return ret; | |
265 | ||
266 | if (ret) | |
267 | rec->samples++; | |
268 | ||
269 | return 0; | |
270 | } | |
271 | ||
2dd6d8a1 AH |
272 | static int record__auxtrace_mmap_read_snapshot(struct record *rec, |
273 | struct auxtrace_mmap *mm) | |
274 | { | |
275 | int ret; | |
276 | ||
277 | ret = auxtrace_mmap__read_snapshot(mm, rec->itr, &rec->tool, | |
278 | record__process_auxtrace, | |
279 | rec->opts.auxtrace_snapshot_size); | |
280 | if (ret < 0) | |
281 | return ret; | |
282 | ||
283 | if (ret) | |
284 | rec->samples++; | |
285 | ||
286 | return 0; | |
287 | } | |
288 | ||
289 | static int record__auxtrace_read_snapshot_all(struct record *rec) | |
290 | { | |
291 | int i; | |
292 | int rc = 0; | |
293 | ||
294 | for (i = 0; i < rec->evlist->nr_mmaps; i++) { | |
295 | struct auxtrace_mmap *mm = | |
296 | &rec->evlist->mmap[i].auxtrace_mmap; | |
297 | ||
298 | if (!mm->base) | |
299 | continue; | |
300 | ||
301 | if (record__auxtrace_mmap_read_snapshot(rec, mm) != 0) { | |
302 | rc = -1; | |
303 | goto out; | |
304 | } | |
305 | } | |
306 | out: | |
307 | return rc; | |
308 | } | |
309 | ||
310 | static void record__read_auxtrace_snapshot(struct record *rec) | |
311 | { | |
312 | pr_debug("Recording AUX area tracing snapshot\n"); | |
313 | if (record__auxtrace_read_snapshot_all(rec) < 0) { | |
5f9cf599 | 314 | trigger_error(&auxtrace_snapshot_trigger); |
2dd6d8a1 | 315 | } else { |
5f9cf599 WN |
316 | if (auxtrace_record__snapshot_finish(rec->itr)) |
317 | trigger_error(&auxtrace_snapshot_trigger); | |
318 | else | |
319 | trigger_ready(&auxtrace_snapshot_trigger); | |
2dd6d8a1 AH |
320 | } |
321 | } | |
322 | ||
e31f0d01 AH |
323 | #else |
324 | ||
325 | static inline | |
326 | int record__auxtrace_mmap_read(struct record *rec __maybe_unused, | |
327 | struct auxtrace_mmap *mm __maybe_unused) | |
328 | { | |
329 | return 0; | |
330 | } | |
331 | ||
2dd6d8a1 AH |
332 | static inline |
333 | void record__read_auxtrace_snapshot(struct record *rec __maybe_unused) | |
de9ac07b | 334 | { |
f7b7c26e PZ |
335 | } |
336 | ||
2dd6d8a1 AH |
337 | static inline |
338 | int auxtrace_record__snapshot_start(struct auxtrace_record *itr __maybe_unused) | |
f7b7c26e | 339 | { |
2dd6d8a1 | 340 | return 0; |
de9ac07b PZ |
341 | } |
342 | ||
2dd6d8a1 AH |
343 | #endif |
344 | ||
8c6f45a7 | 345 | static int record__open(struct record *rec) |
dd7927f4 | 346 | { |
56e52e85 | 347 | char msg[512]; |
6a4bb04c | 348 | struct perf_evsel *pos; |
d20deb64 ACM |
349 | struct perf_evlist *evlist = rec->evlist; |
350 | struct perf_session *session = rec->session; | |
b4006796 | 351 | struct record_opts *opts = &rec->opts; |
8d3eca20 | 352 | int rc = 0; |
dd7927f4 | 353 | |
e68ae9cf | 354 | perf_evlist__config(evlist, opts, &callchain_param); |
cac21425 | 355 | |
0050f7aa | 356 | evlist__for_each(evlist, pos) { |
dd7927f4 | 357 | try_again: |
d988d5ee | 358 | if (perf_evsel__open(pos, pos->cpus, pos->threads) < 0) { |
56e52e85 | 359 | if (perf_evsel__fallback(pos, errno, msg, sizeof(msg))) { |
d6d901c2 | 360 | if (verbose) |
c0a54341 | 361 | ui__warning("%s\n", msg); |
d6d901c2 ZY |
362 | goto try_again; |
363 | } | |
ca6a4258 | 364 | |
56e52e85 ACM |
365 | rc = -errno; |
366 | perf_evsel__open_strerror(pos, &opts->target, | |
367 | errno, msg, sizeof(msg)); | |
368 | ui__error("%s\n", msg); | |
8d3eca20 | 369 | goto out; |
c171b552 LZ |
370 | } |
371 | } | |
a43d3f08 | 372 | |
23d4aad4 ACM |
373 | if (perf_evlist__apply_filters(evlist, &pos)) { |
374 | error("failed to set filter \"%s\" on event %s with %d (%s)\n", | |
375 | pos->filter, perf_evsel__name(pos), errno, | |
35550da3 | 376 | strerror_r(errno, msg, sizeof(msg))); |
8d3eca20 DA |
377 | rc = -1; |
378 | goto out; | |
0a102479 FW |
379 | } |
380 | ||
ef149c25 | 381 | if (perf_evlist__mmap_ex(evlist, opts->mmap_pages, false, |
2dd6d8a1 AH |
382 | opts->auxtrace_mmap_pages, |
383 | opts->auxtrace_snapshot_mode) < 0) { | |
8d3eca20 DA |
384 | if (errno == EPERM) { |
385 | pr_err("Permission error mapping pages.\n" | |
386 | "Consider increasing " | |
387 | "/proc/sys/kernel/perf_event_mlock_kb,\n" | |
388 | "or try again with a smaller value of -m/--mmap_pages.\n" | |
ef149c25 AH |
389 | "(current value: %u,%u)\n", |
390 | opts->mmap_pages, opts->auxtrace_mmap_pages); | |
8d3eca20 | 391 | rc = -errno; |
8d3eca20 | 392 | } else { |
35550da3 MH |
393 | pr_err("failed to mmap with %d (%s)\n", errno, |
394 | strerror_r(errno, msg, sizeof(msg))); | |
95c36561 WN |
395 | if (errno) |
396 | rc = -errno; | |
397 | else | |
398 | rc = -EINVAL; | |
8d3eca20 DA |
399 | } |
400 | goto out; | |
18e60939 | 401 | } |
0a27d7f9 | 402 | |
563aecb2 | 403 | session->evlist = evlist; |
7b56cce2 | 404 | perf_session__set_id_hdr_size(session); |
8d3eca20 DA |
405 | out: |
406 | return rc; | |
16c8a109 PZ |
407 | } |
408 | ||
e3d59112 NK |
409 | static int process_sample_event(struct perf_tool *tool, |
410 | union perf_event *event, | |
411 | struct perf_sample *sample, | |
412 | struct perf_evsel *evsel, | |
413 | struct machine *machine) | |
414 | { | |
415 | struct record *rec = container_of(tool, struct record, tool); | |
416 | ||
417 | rec->samples++; | |
418 | ||
419 | return build_id__mark_dso_hit(tool, event, sample, evsel, machine); | |
420 | } | |
421 | ||
8c6f45a7 | 422 | static int process_buildids(struct record *rec) |
6122e4e4 | 423 | { |
f5fc1412 JO |
424 | struct perf_data_file *file = &rec->file; |
425 | struct perf_session *session = rec->session; | |
6122e4e4 | 426 | |
457ae94a | 427 | if (file->size == 0) |
9f591fd7 ACM |
428 | return 0; |
429 | ||
00dc8657 NK |
430 | /* |
431 | * During this process, it'll load kernel map and replace the | |
432 | * dso->long_name to a real pathname it found. In this case | |
433 | * we prefer the vmlinux path like | |
434 | * /lib/modules/3.16.4/build/vmlinux | |
435 | * | |
436 | * rather than build-id path (in debug directory). | |
437 | * $HOME/.debug/.build-id/f0/6e17aa50adf4d00b88925e03775de107611551 | |
438 | */ | |
439 | symbol_conf.ignore_vmlinux_buildid = true; | |
440 | ||
6156681b NK |
441 | /* |
442 | * If --buildid-all is given, it marks all DSO regardless of hits, | |
443 | * so no need to process samples. | |
444 | */ | |
445 | if (rec->buildid_all) | |
446 | rec->tool.sample = NULL; | |
447 | ||
b7b61cbe | 448 | return perf_session__process_events(session); |
6122e4e4 ACM |
449 | } |
450 | ||
8115d60c | 451 | static void perf_event__synthesize_guest_os(struct machine *machine, void *data) |
a1645ce1 ZY |
452 | { |
453 | int err; | |
45694aa7 | 454 | struct perf_tool *tool = data; |
a1645ce1 ZY |
455 | /* |
456 | *As for guest kernel when processing subcommand record&report, | |
457 | *we arrange module mmap prior to guest kernel mmap and trigger | |
458 | *a preload dso because default guest module symbols are loaded | |
459 | *from guest kallsyms instead of /lib/modules/XXX/XXX. This | |
460 | *method is used to avoid symbol missing when the first addr is | |
461 | *in module instead of in guest kernel. | |
462 | */ | |
45694aa7 | 463 | err = perf_event__synthesize_modules(tool, process_synthesized_event, |
743eb868 | 464 | machine); |
a1645ce1 ZY |
465 | if (err < 0) |
466 | pr_err("Couldn't record guest kernel [%d]'s reference" | |
23346f21 | 467 | " relocation symbol.\n", machine->pid); |
a1645ce1 | 468 | |
a1645ce1 ZY |
469 | /* |
470 | * We use _stext for guest kernel because guest kernel's /proc/kallsyms | |
471 | * have no _text sometimes. | |
472 | */ | |
45694aa7 | 473 | err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event, |
0ae617be | 474 | machine); |
a1645ce1 ZY |
475 | if (err < 0) |
476 | pr_err("Couldn't record guest kernel [%d]'s reference" | |
23346f21 | 477 | " relocation symbol.\n", machine->pid); |
a1645ce1 ZY |
478 | } |
479 | ||
98402807 FW |
480 | static struct perf_event_header finished_round_event = { |
481 | .size = sizeof(struct perf_event_header), | |
482 | .type = PERF_RECORD_FINISHED_ROUND, | |
483 | }; | |
484 | ||
8c6f45a7 | 485 | static int record__mmap_read_all(struct record *rec) |
98402807 | 486 | { |
dcabb507 | 487 | u64 bytes_written = rec->bytes_written; |
0e2e63dd | 488 | int i; |
8d3eca20 | 489 | int rc = 0; |
98402807 | 490 | |
d20deb64 | 491 | for (i = 0; i < rec->evlist->nr_mmaps; i++) { |
ef149c25 AH |
492 | struct auxtrace_mmap *mm = &rec->evlist->mmap[i].auxtrace_mmap; |
493 | ||
8d3eca20 | 494 | if (rec->evlist->mmap[i].base) { |
e5685730 | 495 | if (record__mmap_read(rec, i) != 0) { |
8d3eca20 DA |
496 | rc = -1; |
497 | goto out; | |
498 | } | |
499 | } | |
ef149c25 | 500 | |
2dd6d8a1 | 501 | if (mm->base && !rec->opts.auxtrace_snapshot_mode && |
ef149c25 AH |
502 | record__auxtrace_mmap_read(rec, mm) != 0) { |
503 | rc = -1; | |
504 | goto out; | |
505 | } | |
98402807 FW |
506 | } |
507 | ||
dcabb507 JO |
508 | /* |
509 | * Mark the round finished in case we wrote | |
510 | * at least one event. | |
511 | */ | |
512 | if (bytes_written != rec->bytes_written) | |
513 | rc = record__write(rec, &finished_round_event, sizeof(finished_round_event)); | |
8d3eca20 DA |
514 | |
515 | out: | |
516 | return rc; | |
98402807 FW |
517 | } |
518 | ||
8c6f45a7 | 519 | static void record__init_features(struct record *rec) |
57706abc | 520 | { |
57706abc DA |
521 | struct perf_session *session = rec->session; |
522 | int feat; | |
523 | ||
524 | for (feat = HEADER_FIRST_FEATURE; feat < HEADER_LAST_FEATURE; feat++) | |
525 | perf_header__set_feat(&session->header, feat); | |
526 | ||
527 | if (rec->no_buildid) | |
528 | perf_header__clear_feat(&session->header, HEADER_BUILD_ID); | |
529 | ||
3e2be2da | 530 | if (!have_tracepoints(&rec->evlist->entries)) |
57706abc DA |
531 | perf_header__clear_feat(&session->header, HEADER_TRACING_DATA); |
532 | ||
533 | if (!rec->opts.branch_stack) | |
534 | perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK); | |
ef149c25 AH |
535 | |
536 | if (!rec->opts.full_auxtrace) | |
537 | perf_header__clear_feat(&session->header, HEADER_AUXTRACE); | |
ffa517ad JO |
538 | |
539 | perf_header__clear_feat(&session->header, HEADER_STAT); | |
57706abc DA |
540 | } |
541 | ||
e1ab48ba WN |
542 | static void |
543 | record__finish_output(struct record *rec) | |
544 | { | |
545 | struct perf_data_file *file = &rec->file; | |
546 | int fd = perf_data_file__fd(file); | |
547 | ||
548 | if (file->is_pipe) | |
549 | return; | |
550 | ||
551 | rec->session->header.data_size += rec->bytes_written; | |
552 | file->size = lseek(perf_data_file__fd(file), 0, SEEK_CUR); | |
553 | ||
554 | if (!rec->no_buildid) { | |
555 | process_buildids(rec); | |
556 | ||
557 | if (rec->buildid_all) | |
558 | dsos__hit_all(rec->session); | |
559 | } | |
560 | perf_session__write_header(rec->session, rec->evlist, fd, true); | |
561 | ||
562 | return; | |
563 | } | |
564 | ||
be7b0c9e WN |
565 | static int record__synthesize_workload(struct record *rec) |
566 | { | |
567 | struct { | |
568 | struct thread_map map; | |
569 | struct thread_map_data map_data; | |
570 | } thread_map; | |
571 | ||
572 | thread_map.map.nr = 1; | |
573 | thread_map.map.map[0].pid = rec->evlist->workload.pid; | |
574 | thread_map.map.map[0].comm = NULL; | |
575 | return perf_event__synthesize_thread_map(&rec->tool, &thread_map.map, | |
576 | process_synthesized_event, | |
577 | &rec->session->machines.host, | |
578 | rec->opts.sample_address, | |
579 | rec->opts.proc_map_timeout); | |
580 | } | |
581 | ||
3c1cb7e3 WN |
582 | static int record__synthesize(struct record *rec); |
583 | ||
ecfd7a9c WN |
584 | static int |
585 | record__switch_output(struct record *rec, bool at_exit) | |
586 | { | |
587 | struct perf_data_file *file = &rec->file; | |
588 | int fd, err; | |
589 | ||
590 | /* Same Size: "2015122520103046"*/ | |
591 | char timestamp[] = "InvalidTimestamp"; | |
592 | ||
593 | rec->samples = 0; | |
594 | record__finish_output(rec); | |
595 | err = fetch_current_timestamp(timestamp, sizeof(timestamp)); | |
596 | if (err) { | |
597 | pr_err("Failed to get current timestamp\n"); | |
598 | return -EINVAL; | |
599 | } | |
600 | ||
601 | fd = perf_data_file__switch(file, timestamp, | |
602 | rec->session->header.data_offset, | |
603 | at_exit); | |
604 | if (fd >= 0 && !at_exit) { | |
605 | rec->bytes_written = 0; | |
606 | rec->session->header.data_size = 0; | |
607 | } | |
608 | ||
609 | if (!quiet) | |
610 | fprintf(stderr, "[ perf record: Dump %s.%s ]\n", | |
611 | file->path, timestamp); | |
3c1cb7e3 WN |
612 | |
613 | /* Output tracking events */ | |
be7b0c9e | 614 | if (!at_exit) { |
3c1cb7e3 WN |
615 | record__synthesize(rec); |
616 | ||
be7b0c9e WN |
617 | /* |
618 | * In 'perf record --switch-output' without -a, | |
619 | * record__synthesize() in record__switch_output() won't | |
620 | * generate tracking events because there's no thread_map | |
621 | * in evlist. Which causes newly created perf.data doesn't | |
622 | * contain map and comm information. | |
623 | * Create a fake thread_map and directly call | |
624 | * perf_event__synthesize_thread_map() for those events. | |
625 | */ | |
626 | if (target__none(&rec->opts.target)) | |
627 | record__synthesize_workload(rec); | |
628 | } | |
ecfd7a9c WN |
629 | return fd; |
630 | } | |
631 | ||
f33cbe72 ACM |
632 | static volatile int workload_exec_errno; |
633 | ||
634 | /* | |
635 | * perf_evlist__prepare_workload will send a SIGUSR1 | |
636 | * if the fork fails, since we asked by setting its | |
637 | * want_signal to true. | |
638 | */ | |
45604710 NK |
639 | static void workload_exec_failed_signal(int signo __maybe_unused, |
640 | siginfo_t *info, | |
f33cbe72 ACM |
641 | void *ucontext __maybe_unused) |
642 | { | |
643 | workload_exec_errno = info->si_value.sival_int; | |
644 | done = 1; | |
f33cbe72 ACM |
645 | child_finished = 1; |
646 | } | |
647 | ||
2dd6d8a1 AH |
648 | static void snapshot_sig_handler(int sig); |
649 | ||
46bc29b9 AH |
650 | int __weak |
651 | perf_event__synth_time_conv(const struct perf_event_mmap_page *pc __maybe_unused, | |
652 | struct perf_tool *tool __maybe_unused, | |
653 | perf_event__handler_t process __maybe_unused, | |
654 | struct machine *machine __maybe_unused) | |
655 | { | |
656 | return 0; | |
657 | } | |
658 | ||
c45628b0 WN |
659 | static const struct perf_event_mmap_page *record__pick_pc(struct record *rec) |
660 | { | |
661 | if (rec->evlist && rec->evlist->mmap && rec->evlist->mmap[0].base) | |
662 | return rec->evlist->mmap[0].base; | |
663 | return NULL; | |
664 | } | |
665 | ||
c45c86eb WN |
666 | static int record__synthesize(struct record *rec) |
667 | { | |
668 | struct perf_session *session = rec->session; | |
669 | struct machine *machine = &session->machines.host; | |
670 | struct perf_data_file *file = &rec->file; | |
671 | struct record_opts *opts = &rec->opts; | |
672 | struct perf_tool *tool = &rec->tool; | |
673 | int fd = perf_data_file__fd(file); | |
674 | int err = 0; | |
675 | ||
676 | if (file->is_pipe) { | |
677 | err = perf_event__synthesize_attrs(tool, session, | |
678 | process_synthesized_event); | |
679 | if (err < 0) { | |
680 | pr_err("Couldn't synthesize attrs.\n"); | |
681 | goto out; | |
682 | } | |
683 | ||
684 | if (have_tracepoints(&rec->evlist->entries)) { | |
685 | /* | |
686 | * FIXME err <= 0 here actually means that | |
687 | * there were no tracepoints so its not really | |
688 | * an error, just that we don't need to | |
689 | * synthesize anything. We really have to | |
690 | * return this more properly and also | |
691 | * propagate errors that now are calling die() | |
692 | */ | |
693 | err = perf_event__synthesize_tracing_data(tool, fd, rec->evlist, | |
694 | process_synthesized_event); | |
695 | if (err <= 0) { | |
696 | pr_err("Couldn't record tracing data.\n"); | |
697 | goto out; | |
698 | } | |
699 | rec->bytes_written += err; | |
700 | } | |
701 | } | |
702 | ||
c45628b0 | 703 | err = perf_event__synth_time_conv(record__pick_pc(rec), tool, |
46bc29b9 AH |
704 | process_synthesized_event, machine); |
705 | if (err) | |
706 | goto out; | |
707 | ||
c45c86eb WN |
708 | if (rec->opts.full_auxtrace) { |
709 | err = perf_event__synthesize_auxtrace_info(rec->itr, tool, | |
710 | session, process_synthesized_event); | |
711 | if (err) | |
712 | goto out; | |
713 | } | |
714 | ||
715 | err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event, | |
716 | machine); | |
717 | WARN_ONCE(err < 0, "Couldn't record kernel reference relocation symbol\n" | |
718 | "Symbol resolution may be skewed if relocation was used (e.g. kexec).\n" | |
719 | "Check /proc/kallsyms permission or run as root.\n"); | |
720 | ||
721 | err = perf_event__synthesize_modules(tool, process_synthesized_event, | |
722 | machine); | |
723 | WARN_ONCE(err < 0, "Couldn't record kernel module information.\n" | |
724 | "Symbol resolution may be skewed if relocation was used (e.g. kexec).\n" | |
725 | "Check /proc/modules permission or run as root.\n"); | |
726 | ||
727 | if (perf_guest) { | |
728 | machines__process_guests(&session->machines, | |
729 | perf_event__synthesize_guest_os, tool); | |
730 | } | |
731 | ||
732 | err = __machine__synthesize_threads(machine, tool, &opts->target, rec->evlist->threads, | |
733 | process_synthesized_event, opts->sample_address, | |
734 | opts->proc_map_timeout); | |
735 | out: | |
736 | return err; | |
737 | } | |
738 | ||
8c6f45a7 | 739 | static int __cmd_record(struct record *rec, int argc, const char **argv) |
16c8a109 | 740 | { |
57706abc | 741 | int err; |
45604710 | 742 | int status = 0; |
8b412664 | 743 | unsigned long waking = 0; |
46be604b | 744 | const bool forks = argc > 0; |
23346f21 | 745 | struct machine *machine; |
45694aa7 | 746 | struct perf_tool *tool = &rec->tool; |
b4006796 | 747 | struct record_opts *opts = &rec->opts; |
f5fc1412 | 748 | struct perf_data_file *file = &rec->file; |
d20deb64 | 749 | struct perf_session *session; |
6dcf45ef | 750 | bool disabled = false, draining = false; |
42aa276f | 751 | int fd; |
de9ac07b | 752 | |
d20deb64 | 753 | rec->progname = argv[0]; |
33e49ea7 | 754 | |
45604710 | 755 | atexit(record__sig_exit); |
f5970550 PZ |
756 | signal(SIGCHLD, sig_handler); |
757 | signal(SIGINT, sig_handler); | |
804f7ac7 | 758 | signal(SIGTERM, sig_handler); |
c0bdc1c4 | 759 | |
3c1cb7e3 | 760 | if (rec->opts.auxtrace_snapshot_mode || rec->switch_output) { |
2dd6d8a1 | 761 | signal(SIGUSR2, snapshot_sig_handler); |
3c1cb7e3 WN |
762 | if (rec->opts.auxtrace_snapshot_mode) |
763 | trigger_on(&auxtrace_snapshot_trigger); | |
764 | if (rec->switch_output) | |
765 | trigger_on(&switch_output_trigger); | |
c0bdc1c4 | 766 | } else { |
2dd6d8a1 | 767 | signal(SIGUSR2, SIG_IGN); |
c0bdc1c4 | 768 | } |
f5970550 | 769 | |
b7b61cbe | 770 | session = perf_session__new(file, false, tool); |
94c744b6 | 771 | if (session == NULL) { |
ffa91880 | 772 | pr_err("Perf session creation failed.\n"); |
a9a70bbc ACM |
773 | return -1; |
774 | } | |
775 | ||
42aa276f | 776 | fd = perf_data_file__fd(file); |
d20deb64 ACM |
777 | rec->session = session; |
778 | ||
8c6f45a7 | 779 | record__init_features(rec); |
330aa675 | 780 | |
d4db3f16 | 781 | if (forks) { |
3e2be2da | 782 | err = perf_evlist__prepare_workload(rec->evlist, &opts->target, |
f5fc1412 | 783 | argv, file->is_pipe, |
735f7e0b | 784 | workload_exec_failed_signal); |
35b9d88e ACM |
785 | if (err < 0) { |
786 | pr_err("Couldn't run the workload!\n"); | |
45604710 | 787 | status = err; |
35b9d88e | 788 | goto out_delete_session; |
856e9660 | 789 | } |
856e9660 PZ |
790 | } |
791 | ||
8c6f45a7 | 792 | if (record__open(rec) != 0) { |
8d3eca20 | 793 | err = -1; |
45604710 | 794 | goto out_child; |
8d3eca20 | 795 | } |
de9ac07b | 796 | |
8690a2a7 WN |
797 | err = bpf__apply_obj_config(); |
798 | if (err) { | |
799 | char errbuf[BUFSIZ]; | |
800 | ||
801 | bpf__strerror_apply_obj_config(err, errbuf, sizeof(errbuf)); | |
802 | pr_err("ERROR: Apply config to BPF failed: %s\n", | |
803 | errbuf); | |
804 | goto out_child; | |
805 | } | |
806 | ||
cca8482c AH |
807 | /* |
808 | * Normally perf_session__new would do this, but it doesn't have the | |
809 | * evlist. | |
810 | */ | |
811 | if (rec->tool.ordered_events && !perf_evlist__sample_id_all(rec->evlist)) { | |
812 | pr_warning("WARNING: No sample_id_all support, falling back to unordered processing\n"); | |
813 | rec->tool.ordered_events = false; | |
814 | } | |
815 | ||
3e2be2da | 816 | if (!rec->evlist->nr_groups) |
a8bb559b NK |
817 | perf_header__clear_feat(&session->header, HEADER_GROUP_DESC); |
818 | ||
f5fc1412 | 819 | if (file->is_pipe) { |
42aa276f | 820 | err = perf_header__write_pipe(fd); |
529870e3 | 821 | if (err < 0) |
45604710 | 822 | goto out_child; |
563aecb2 | 823 | } else { |
42aa276f | 824 | err = perf_session__write_header(session, rec->evlist, fd, false); |
d5eed904 | 825 | if (err < 0) |
45604710 | 826 | goto out_child; |
56b03f3c ACM |
827 | } |
828 | ||
d3665498 | 829 | if (!rec->no_buildid |
e20960c0 | 830 | && !perf_header__has_feat(&session->header, HEADER_BUILD_ID)) { |
d3665498 | 831 | pr_err("Couldn't generate buildids. " |
e20960c0 | 832 | "Use --no-buildid to profile anyway.\n"); |
8d3eca20 | 833 | err = -1; |
45604710 | 834 | goto out_child; |
e20960c0 RR |
835 | } |
836 | ||
34ba5122 | 837 | machine = &session->machines.host; |
743eb868 | 838 | |
c45c86eb WN |
839 | err = record__synthesize(rec); |
840 | if (err < 0) | |
45604710 | 841 | goto out_child; |
8d3eca20 | 842 | |
d20deb64 | 843 | if (rec->realtime_prio) { |
de9ac07b PZ |
844 | struct sched_param param; |
845 | ||
d20deb64 | 846 | param.sched_priority = rec->realtime_prio; |
de9ac07b | 847 | if (sched_setscheduler(0, SCHED_FIFO, ¶m)) { |
6beba7ad | 848 | pr_err("Could not set realtime priority.\n"); |
8d3eca20 | 849 | err = -1; |
45604710 | 850 | goto out_child; |
de9ac07b PZ |
851 | } |
852 | } | |
853 | ||
774cb499 JO |
854 | /* |
855 | * When perf is starting the traced process, all the events | |
856 | * (apart from group members) have enable_on_exec=1 set, | |
857 | * so don't spoil it by prematurely enabling them. | |
858 | */ | |
6619a53e | 859 | if (!target__none(&opts->target) && !opts->initial_delay) |
3e2be2da | 860 | perf_evlist__enable(rec->evlist); |
764e16a3 | 861 | |
856e9660 PZ |
862 | /* |
863 | * Let the child rip | |
864 | */ | |
e803cf97 | 865 | if (forks) { |
e5bed564 NK |
866 | union perf_event *event; |
867 | ||
868 | event = malloc(sizeof(event->comm) + machine->id_hdr_size); | |
869 | if (event == NULL) { | |
870 | err = -ENOMEM; | |
871 | goto out_child; | |
872 | } | |
873 | ||
e803cf97 NK |
874 | /* |
875 | * Some H/W events are generated before COMM event | |
876 | * which is emitted during exec(), so perf script | |
877 | * cannot see a correct process name for those events. | |
878 | * Synthesize COMM event to prevent it. | |
879 | */ | |
e5bed564 | 880 | perf_event__synthesize_comm(tool, event, |
e803cf97 NK |
881 | rec->evlist->workload.pid, |
882 | process_synthesized_event, | |
883 | machine); | |
e5bed564 | 884 | free(event); |
e803cf97 | 885 | |
3e2be2da | 886 | perf_evlist__start_workload(rec->evlist); |
e803cf97 | 887 | } |
856e9660 | 888 | |
6619a53e AK |
889 | if (opts->initial_delay) { |
890 | usleep(opts->initial_delay * 1000); | |
891 | perf_evlist__enable(rec->evlist); | |
892 | } | |
893 | ||
5f9cf599 | 894 | trigger_ready(&auxtrace_snapshot_trigger); |
3c1cb7e3 | 895 | trigger_ready(&switch_output_trigger); |
649c48a9 | 896 | for (;;) { |
9f065194 | 897 | unsigned long long hits = rec->samples; |
de9ac07b | 898 | |
8c6f45a7 | 899 | if (record__mmap_read_all(rec) < 0) { |
5f9cf599 | 900 | trigger_error(&auxtrace_snapshot_trigger); |
3c1cb7e3 | 901 | trigger_error(&switch_output_trigger); |
8d3eca20 | 902 | err = -1; |
45604710 | 903 | goto out_child; |
8d3eca20 | 904 | } |
de9ac07b | 905 | |
2dd6d8a1 AH |
906 | if (auxtrace_record__snapshot_started) { |
907 | auxtrace_record__snapshot_started = 0; | |
5f9cf599 | 908 | if (!trigger_is_error(&auxtrace_snapshot_trigger)) |
2dd6d8a1 | 909 | record__read_auxtrace_snapshot(rec); |
5f9cf599 | 910 | if (trigger_is_error(&auxtrace_snapshot_trigger)) { |
2dd6d8a1 AH |
911 | pr_err("AUX area tracing snapshot failed\n"); |
912 | err = -1; | |
913 | goto out_child; | |
914 | } | |
915 | } | |
916 | ||
3c1cb7e3 WN |
917 | if (trigger_is_hit(&switch_output_trigger)) { |
918 | trigger_ready(&switch_output_trigger); | |
919 | ||
920 | if (!quiet) | |
921 | fprintf(stderr, "[ perf record: dump data: Woken up %ld times ]\n", | |
922 | waking); | |
923 | waking = 0; | |
924 | fd = record__switch_output(rec, false); | |
925 | if (fd < 0) { | |
926 | pr_err("Failed to switch to new file\n"); | |
927 | trigger_error(&switch_output_trigger); | |
928 | err = fd; | |
929 | goto out_child; | |
930 | } | |
931 | } | |
932 | ||
d20deb64 | 933 | if (hits == rec->samples) { |
6dcf45ef | 934 | if (done || draining) |
649c48a9 | 935 | break; |
f66a889d | 936 | err = perf_evlist__poll(rec->evlist, -1); |
a515114f JO |
937 | /* |
938 | * Propagate error, only if there's any. Ignore positive | |
939 | * number of returned events and interrupt error. | |
940 | */ | |
941 | if (err > 0 || (err < 0 && errno == EINTR)) | |
45604710 | 942 | err = 0; |
8b412664 | 943 | waking++; |
6dcf45ef ACM |
944 | |
945 | if (perf_evlist__filter_pollfd(rec->evlist, POLLERR | POLLHUP) == 0) | |
946 | draining = true; | |
8b412664 PZ |
947 | } |
948 | ||
774cb499 JO |
949 | /* |
950 | * When perf is starting the traced process, at the end events | |
951 | * die with the process and we wait for that. Thus no need to | |
952 | * disable events in this case. | |
953 | */ | |
602ad878 | 954 | if (done && !disabled && !target__none(&opts->target)) { |
5f9cf599 | 955 | trigger_off(&auxtrace_snapshot_trigger); |
3e2be2da | 956 | perf_evlist__disable(rec->evlist); |
2711926a JO |
957 | disabled = true; |
958 | } | |
de9ac07b | 959 | } |
5f9cf599 | 960 | trigger_off(&auxtrace_snapshot_trigger); |
3c1cb7e3 | 961 | trigger_off(&switch_output_trigger); |
de9ac07b | 962 | |
f33cbe72 | 963 | if (forks && workload_exec_errno) { |
35550da3 | 964 | char msg[STRERR_BUFSIZE]; |
f33cbe72 ACM |
965 | const char *emsg = strerror_r(workload_exec_errno, msg, sizeof(msg)); |
966 | pr_err("Workload failed: %s\n", emsg); | |
967 | err = -1; | |
45604710 | 968 | goto out_child; |
f33cbe72 ACM |
969 | } |
970 | ||
e3d59112 | 971 | if (!quiet) |
45604710 | 972 | fprintf(stderr, "[ perf record: Woken up %ld times to write data ]\n", waking); |
b44308f5 | 973 | |
45604710 NK |
974 | out_child: |
975 | if (forks) { | |
976 | int exit_status; | |
addc2785 | 977 | |
45604710 NK |
978 | if (!child_finished) |
979 | kill(rec->evlist->workload.pid, SIGTERM); | |
980 | ||
981 | wait(&exit_status); | |
982 | ||
983 | if (err < 0) | |
984 | status = err; | |
985 | else if (WIFEXITED(exit_status)) | |
986 | status = WEXITSTATUS(exit_status); | |
987 | else if (WIFSIGNALED(exit_status)) | |
988 | signr = WTERMSIG(exit_status); | |
989 | } else | |
990 | status = err; | |
991 | ||
e3d59112 NK |
992 | /* this will be recalculated during process_buildids() */ |
993 | rec->samples = 0; | |
994 | ||
ecfd7a9c WN |
995 | if (!err) { |
996 | if (!rec->timestamp_filename) { | |
997 | record__finish_output(rec); | |
998 | } else { | |
999 | fd = record__switch_output(rec, true); | |
1000 | if (fd < 0) { | |
1001 | status = fd; | |
1002 | goto out_delete_session; | |
1003 | } | |
1004 | } | |
1005 | } | |
39d17dac | 1006 | |
e3d59112 NK |
1007 | if (!err && !quiet) { |
1008 | char samples[128]; | |
ecfd7a9c WN |
1009 | const char *postfix = rec->timestamp_filename ? |
1010 | ".<timestamp>" : ""; | |
e3d59112 | 1011 | |
ef149c25 | 1012 | if (rec->samples && !rec->opts.full_auxtrace) |
e3d59112 NK |
1013 | scnprintf(samples, sizeof(samples), |
1014 | " (%" PRIu64 " samples)", rec->samples); | |
1015 | else | |
1016 | samples[0] = '\0'; | |
1017 | ||
ecfd7a9c | 1018 | fprintf(stderr, "[ perf record: Captured and wrote %.3f MB %s%s%s ]\n", |
e3d59112 | 1019 | perf_data_file__size(file) / 1024.0 / 1024.0, |
ecfd7a9c | 1020 | file->path, postfix, samples); |
e3d59112 NK |
1021 | } |
1022 | ||
39d17dac ACM |
1023 | out_delete_session: |
1024 | perf_session__delete(session); | |
45604710 | 1025 | return status; |
de9ac07b | 1026 | } |
0e9b20b8 | 1027 | |
0883e820 | 1028 | static void callchain_debug(struct callchain_param *callchain) |
09b0fd45 | 1029 | { |
aad2b21c | 1030 | static const char *str[CALLCHAIN_MAX] = { "NONE", "FP", "DWARF", "LBR" }; |
a601fdff | 1031 | |
0883e820 | 1032 | pr_debug("callchain: type %s\n", str[callchain->record_mode]); |
26d33022 | 1033 | |
0883e820 | 1034 | if (callchain->record_mode == CALLCHAIN_DWARF) |
09b0fd45 | 1035 | pr_debug("callchain: stack dump size %d\n", |
0883e820 | 1036 | callchain->dump_size); |
09b0fd45 JO |
1037 | } |
1038 | ||
0883e820 ACM |
1039 | int record_opts__parse_callchain(struct record_opts *record, |
1040 | struct callchain_param *callchain, | |
1041 | const char *arg, bool unset) | |
09b0fd45 | 1042 | { |
09b0fd45 | 1043 | int ret; |
0883e820 | 1044 | callchain->enabled = !unset; |
eb853e80 | 1045 | |
09b0fd45 JO |
1046 | /* --no-call-graph */ |
1047 | if (unset) { | |
0883e820 | 1048 | callchain->record_mode = CALLCHAIN_NONE; |
09b0fd45 JO |
1049 | pr_debug("callchain: disabled\n"); |
1050 | return 0; | |
1051 | } | |
1052 | ||
0883e820 | 1053 | ret = parse_callchain_record_opt(arg, callchain); |
5c0cf224 JO |
1054 | if (!ret) { |
1055 | /* Enable data address sampling for DWARF unwind. */ | |
0883e820 | 1056 | if (callchain->record_mode == CALLCHAIN_DWARF) |
5c0cf224 | 1057 | record->sample_address = true; |
0883e820 | 1058 | callchain_debug(callchain); |
5c0cf224 | 1059 | } |
26d33022 JO |
1060 | |
1061 | return ret; | |
1062 | } | |
1063 | ||
0883e820 ACM |
1064 | int record_parse_callchain_opt(const struct option *opt, |
1065 | const char *arg, | |
1066 | int unset) | |
1067 | { | |
1068 | return record_opts__parse_callchain(opt->value, &callchain_param, arg, unset); | |
1069 | } | |
1070 | ||
c421e80b | 1071 | int record_callchain_opt(const struct option *opt, |
09b0fd45 JO |
1072 | const char *arg __maybe_unused, |
1073 | int unset __maybe_unused) | |
1074 | { | |
2ddd5c04 | 1075 | struct callchain_param *callchain = opt->value; |
c421e80b | 1076 | |
2ddd5c04 | 1077 | callchain->enabled = true; |
09b0fd45 | 1078 | |
2ddd5c04 ACM |
1079 | if (callchain->record_mode == CALLCHAIN_NONE) |
1080 | callchain->record_mode = CALLCHAIN_FP; | |
eb853e80 | 1081 | |
2ddd5c04 | 1082 | callchain_debug(callchain); |
09b0fd45 JO |
1083 | return 0; |
1084 | } | |
1085 | ||
eb853e80 JO |
1086 | static int perf_record_config(const char *var, const char *value, void *cb) |
1087 | { | |
7a29c087 NK |
1088 | struct record *rec = cb; |
1089 | ||
1090 | if (!strcmp(var, "record.build-id")) { | |
1091 | if (!strcmp(value, "cache")) | |
1092 | rec->no_buildid_cache = false; | |
1093 | else if (!strcmp(value, "no-cache")) | |
1094 | rec->no_buildid_cache = true; | |
1095 | else if (!strcmp(value, "skip")) | |
1096 | rec->no_buildid = true; | |
1097 | else | |
1098 | return -1; | |
1099 | return 0; | |
1100 | } | |
eb853e80 | 1101 | if (!strcmp(var, "record.call-graph")) |
5a2e5e85 | 1102 | var = "call-graph.record-mode"; /* fall-through */ |
eb853e80 JO |
1103 | |
1104 | return perf_default_config(var, value, cb); | |
1105 | } | |
1106 | ||
814c8c38 PZ |
1107 | struct clockid_map { |
1108 | const char *name; | |
1109 | int clockid; | |
1110 | }; | |
1111 | ||
1112 | #define CLOCKID_MAP(n, c) \ | |
1113 | { .name = n, .clockid = (c), } | |
1114 | ||
1115 | #define CLOCKID_END { .name = NULL, } | |
1116 | ||
1117 | ||
1118 | /* | |
1119 | * Add the missing ones, we need to build on many distros... | |
1120 | */ | |
1121 | #ifndef CLOCK_MONOTONIC_RAW | |
1122 | #define CLOCK_MONOTONIC_RAW 4 | |
1123 | #endif | |
1124 | #ifndef CLOCK_BOOTTIME | |
1125 | #define CLOCK_BOOTTIME 7 | |
1126 | #endif | |
1127 | #ifndef CLOCK_TAI | |
1128 | #define CLOCK_TAI 11 | |
1129 | #endif | |
1130 | ||
1131 | static const struct clockid_map clockids[] = { | |
1132 | /* available for all events, NMI safe */ | |
1133 | CLOCKID_MAP("monotonic", CLOCK_MONOTONIC), | |
1134 | CLOCKID_MAP("monotonic_raw", CLOCK_MONOTONIC_RAW), | |
1135 | ||
1136 | /* available for some events */ | |
1137 | CLOCKID_MAP("realtime", CLOCK_REALTIME), | |
1138 | CLOCKID_MAP("boottime", CLOCK_BOOTTIME), | |
1139 | CLOCKID_MAP("tai", CLOCK_TAI), | |
1140 | ||
1141 | /* available for the lazy */ | |
1142 | CLOCKID_MAP("mono", CLOCK_MONOTONIC), | |
1143 | CLOCKID_MAP("raw", CLOCK_MONOTONIC_RAW), | |
1144 | CLOCKID_MAP("real", CLOCK_REALTIME), | |
1145 | CLOCKID_MAP("boot", CLOCK_BOOTTIME), | |
1146 | ||
1147 | CLOCKID_END, | |
1148 | }; | |
1149 | ||
1150 | static int parse_clockid(const struct option *opt, const char *str, int unset) | |
1151 | { | |
1152 | struct record_opts *opts = (struct record_opts *)opt->value; | |
1153 | const struct clockid_map *cm; | |
1154 | const char *ostr = str; | |
1155 | ||
1156 | if (unset) { | |
1157 | opts->use_clockid = 0; | |
1158 | return 0; | |
1159 | } | |
1160 | ||
1161 | /* no arg passed */ | |
1162 | if (!str) | |
1163 | return 0; | |
1164 | ||
1165 | /* no setting it twice */ | |
1166 | if (opts->use_clockid) | |
1167 | return -1; | |
1168 | ||
1169 | opts->use_clockid = true; | |
1170 | ||
1171 | /* if its a number, we're done */ | |
1172 | if (sscanf(str, "%d", &opts->clockid) == 1) | |
1173 | return 0; | |
1174 | ||
1175 | /* allow a "CLOCK_" prefix to the name */ | |
1176 | if (!strncasecmp(str, "CLOCK_", 6)) | |
1177 | str += 6; | |
1178 | ||
1179 | for (cm = clockids; cm->name; cm++) { | |
1180 | if (!strcasecmp(str, cm->name)) { | |
1181 | opts->clockid = cm->clockid; | |
1182 | return 0; | |
1183 | } | |
1184 | } | |
1185 | ||
1186 | opts->use_clockid = false; | |
1187 | ui__warning("unknown clockid %s, check man page\n", ostr); | |
1188 | return -1; | |
1189 | } | |
1190 | ||
e9db1310 AH |
1191 | static int record__parse_mmap_pages(const struct option *opt, |
1192 | const char *str, | |
1193 | int unset __maybe_unused) | |
1194 | { | |
1195 | struct record_opts *opts = opt->value; | |
1196 | char *s, *p; | |
1197 | unsigned int mmap_pages; | |
1198 | int ret; | |
1199 | ||
1200 | if (!str) | |
1201 | return -EINVAL; | |
1202 | ||
1203 | s = strdup(str); | |
1204 | if (!s) | |
1205 | return -ENOMEM; | |
1206 | ||
1207 | p = strchr(s, ','); | |
1208 | if (p) | |
1209 | *p = '\0'; | |
1210 | ||
1211 | if (*s) { | |
1212 | ret = __perf_evlist__parse_mmap_pages(&mmap_pages, s); | |
1213 | if (ret) | |
1214 | goto out_free; | |
1215 | opts->mmap_pages = mmap_pages; | |
1216 | } | |
1217 | ||
1218 | if (!p) { | |
1219 | ret = 0; | |
1220 | goto out_free; | |
1221 | } | |
1222 | ||
1223 | ret = __perf_evlist__parse_mmap_pages(&mmap_pages, p + 1); | |
1224 | if (ret) | |
1225 | goto out_free; | |
1226 | ||
1227 | opts->auxtrace_mmap_pages = mmap_pages; | |
1228 | ||
1229 | out_free: | |
1230 | free(s); | |
1231 | return ret; | |
1232 | } | |
1233 | ||
e5b2c207 | 1234 | static const char * const __record_usage[] = { |
9e096753 MG |
1235 | "perf record [<options>] [<command>]", |
1236 | "perf record [<options>] -- <command> [<options>]", | |
0e9b20b8 IM |
1237 | NULL |
1238 | }; | |
e5b2c207 | 1239 | const char * const *record_usage = __record_usage; |
0e9b20b8 | 1240 | |
d20deb64 | 1241 | /* |
8c6f45a7 ACM |
1242 | * XXX Ideally would be local to cmd_record() and passed to a record__new |
1243 | * because we need to have access to it in record__exit, that is called | |
d20deb64 ACM |
1244 | * after cmd_record() exits, but since record_options need to be accessible to |
1245 | * builtin-script, leave it here. | |
1246 | * | |
1247 | * At least we don't ouch it in all the other functions here directly. | |
1248 | * | |
1249 | * Just say no to tons of global variables, sigh. | |
1250 | */ | |
8c6f45a7 | 1251 | static struct record record = { |
d20deb64 | 1252 | .opts = { |
8affc2b8 | 1253 | .sample_time = true, |
d20deb64 ACM |
1254 | .mmap_pages = UINT_MAX, |
1255 | .user_freq = UINT_MAX, | |
1256 | .user_interval = ULLONG_MAX, | |
447a6013 | 1257 | .freq = 4000, |
d1cb9fce NK |
1258 | .target = { |
1259 | .uses_mmap = true, | |
3aa5939d | 1260 | .default_per_cpu = true, |
d1cb9fce | 1261 | }, |
9d9cad76 | 1262 | .proc_map_timeout = 500, |
d20deb64 | 1263 | }, |
e3d59112 NK |
1264 | .tool = { |
1265 | .sample = process_sample_event, | |
1266 | .fork = perf_event__process_fork, | |
cca8482c | 1267 | .exit = perf_event__process_exit, |
e3d59112 NK |
1268 | .comm = perf_event__process_comm, |
1269 | .mmap = perf_event__process_mmap, | |
1270 | .mmap2 = perf_event__process_mmap2, | |
cca8482c | 1271 | .ordered_events = true, |
e3d59112 | 1272 | }, |
d20deb64 | 1273 | }; |
7865e817 | 1274 | |
76a26549 NK |
1275 | const char record_callchain_help[] = CALLCHAIN_RECORD_HELP |
1276 | "\n\t\t\t\tDefault: fp"; | |
61eaa3be | 1277 | |
0aab2136 WN |
1278 | static bool dry_run; |
1279 | ||
d20deb64 ACM |
1280 | /* |
1281 | * XXX Will stay a global variable till we fix builtin-script.c to stop messing | |
1282 | * with it and switch to use the library functions in perf_evlist that came | |
b4006796 | 1283 | * from builtin-record.c, i.e. use record_opts, |
d20deb64 ACM |
1284 | * perf_evlist__prepare_workload, etc instead of fork+exec'in 'perf record', |
1285 | * using pipes, etc. | |
1286 | */ | |
e5b2c207 | 1287 | struct option __record_options[] = { |
d20deb64 | 1288 | OPT_CALLBACK('e', "event", &record.evlist, "event", |
86847b62 | 1289 | "event selector. use 'perf list' to list available events", |
f120f9d5 | 1290 | parse_events_option), |
d20deb64 | 1291 | OPT_CALLBACK(0, "filter", &record.evlist, "filter", |
c171b552 | 1292 | "event filter", parse_filter), |
4ba1faa1 WN |
1293 | OPT_CALLBACK_NOOPT(0, "exclude-perf", &record.evlist, |
1294 | NULL, "don't record events from perf itself", | |
1295 | exclude_perf), | |
bea03405 | 1296 | OPT_STRING('p', "pid", &record.opts.target.pid, "pid", |
d6d901c2 | 1297 | "record events on existing process id"), |
bea03405 | 1298 | OPT_STRING('t', "tid", &record.opts.target.tid, "tid", |
d6d901c2 | 1299 | "record events on existing thread id"), |
d20deb64 | 1300 | OPT_INTEGER('r', "realtime", &record.realtime_prio, |
0e9b20b8 | 1301 | "collect data with this RT SCHED_FIFO priority"), |
509051ea | 1302 | OPT_BOOLEAN(0, "no-buffering", &record.opts.no_buffering, |
acac03fa | 1303 | "collect data without buffering"), |
d20deb64 | 1304 | OPT_BOOLEAN('R', "raw-samples", &record.opts.raw_samples, |
daac07b2 | 1305 | "collect raw sample records from all opened counters"), |
bea03405 | 1306 | OPT_BOOLEAN('a', "all-cpus", &record.opts.target.system_wide, |
0e9b20b8 | 1307 | "system-wide collection from all CPUs"), |
bea03405 | 1308 | OPT_STRING('C', "cpu", &record.opts.target.cpu_list, "cpu", |
c45c6ea2 | 1309 | "list of cpus to monitor"), |
d20deb64 | 1310 | OPT_U64('c', "count", &record.opts.user_interval, "event period to sample"), |
f5fc1412 | 1311 | OPT_STRING('o', "output", &record.file.path, "file", |
abaff32a | 1312 | "output file name"), |
69e7e5b0 AH |
1313 | OPT_BOOLEAN_SET('i', "no-inherit", &record.opts.no_inherit, |
1314 | &record.opts.no_inherit_set, | |
1315 | "child tasks do not inherit counters"), | |
d20deb64 | 1316 | OPT_UINTEGER('F', "freq", &record.opts.user_freq, "profile at this frequency"), |
e9db1310 AH |
1317 | OPT_CALLBACK('m', "mmap-pages", &record.opts, "pages[,pages]", |
1318 | "number of mmap data pages and AUX area tracing mmap pages", | |
1319 | record__parse_mmap_pages), | |
d20deb64 | 1320 | OPT_BOOLEAN(0, "group", &record.opts.group, |
43bece79 | 1321 | "put the counters into a counter group"), |
2ddd5c04 | 1322 | OPT_CALLBACK_NOOPT('g', NULL, &callchain_param, |
09b0fd45 JO |
1323 | NULL, "enables call-graph recording" , |
1324 | &record_callchain_opt), | |
1325 | OPT_CALLBACK(0, "call-graph", &record.opts, | |
76a26549 | 1326 | "record_mode[,record_size]", record_callchain_help, |
09b0fd45 | 1327 | &record_parse_callchain_opt), |
c0555642 | 1328 | OPT_INCR('v', "verbose", &verbose, |
3da297a6 | 1329 | "be more verbose (show counter open errors, etc)"), |
b44308f5 | 1330 | OPT_BOOLEAN('q', "quiet", &quiet, "don't print any message"), |
d20deb64 | 1331 | OPT_BOOLEAN('s', "stat", &record.opts.inherit_stat, |
649c48a9 | 1332 | "per thread counts"), |
56100321 | 1333 | OPT_BOOLEAN('d', "data", &record.opts.sample_address, "Record the sample addresses"), |
3abebc55 AH |
1334 | OPT_BOOLEAN_SET('T', "timestamp", &record.opts.sample_time, |
1335 | &record.opts.sample_time_set, | |
1336 | "Record the sample timestamps"), | |
56100321 | 1337 | OPT_BOOLEAN('P', "period", &record.opts.period, "Record the sample period"), |
d20deb64 | 1338 | OPT_BOOLEAN('n', "no-samples", &record.opts.no_samples, |
649c48a9 | 1339 | "don't sample"), |
d2db9a98 WN |
1340 | OPT_BOOLEAN_SET('N', "no-buildid-cache", &record.no_buildid_cache, |
1341 | &record.no_buildid_cache_set, | |
1342 | "do not update the buildid cache"), | |
1343 | OPT_BOOLEAN_SET('B', "no-buildid", &record.no_buildid, | |
1344 | &record.no_buildid_set, | |
1345 | "do not collect buildids in perf.data"), | |
d20deb64 | 1346 | OPT_CALLBACK('G', "cgroup", &record.evlist, "name", |
023695d9 SE |
1347 | "monitor event in cgroup name only", |
1348 | parse_cgroups), | |
a6205a35 | 1349 | OPT_UINTEGER('D', "delay", &record.opts.initial_delay, |
6619a53e | 1350 | "ms to wait before starting measurement after program start"), |
bea03405 NK |
1351 | OPT_STRING('u', "uid", &record.opts.target.uid_str, "user", |
1352 | "user to profile"), | |
a5aabdac SE |
1353 | |
1354 | OPT_CALLBACK_NOOPT('b', "branch-any", &record.opts.branch_stack, | |
1355 | "branch any", "sample any taken branches", | |
1356 | parse_branch_stack), | |
1357 | ||
1358 | OPT_CALLBACK('j', "branch-filter", &record.opts.branch_stack, | |
1359 | "branch filter mask", "branch stack filter modes", | |
bdfebd84 | 1360 | parse_branch_stack), |
05484298 AK |
1361 | OPT_BOOLEAN('W', "weight", &record.opts.sample_weight, |
1362 | "sample by weight (on special events only)"), | |
475eeab9 AK |
1363 | OPT_BOOLEAN(0, "transaction", &record.opts.sample_transaction, |
1364 | "sample transaction flags (special events only)"), | |
3aa5939d AH |
1365 | OPT_BOOLEAN(0, "per-thread", &record.opts.target.per_thread, |
1366 | "use per-thread mmaps"), | |
bcc84ec6 SE |
1367 | OPT_CALLBACK_OPTARG('I', "intr-regs", &record.opts.sample_intr_regs, NULL, "any register", |
1368 | "sample selected machine registers on interrupt," | |
1369 | " use -I ? to list register names", parse_regs), | |
85c273d2 AK |
1370 | OPT_BOOLEAN(0, "running-time", &record.opts.running_time, |
1371 | "Record running/enabled time of read (:S) events"), | |
814c8c38 PZ |
1372 | OPT_CALLBACK('k', "clockid", &record.opts, |
1373 | "clockid", "clockid to use for events, see clock_gettime()", | |
1374 | parse_clockid), | |
2dd6d8a1 AH |
1375 | OPT_STRING_OPTARG('S', "snapshot", &record.opts.auxtrace_snapshot_opts, |
1376 | "opts", "AUX area tracing Snapshot Mode", ""), | |
9d9cad76 KL |
1377 | OPT_UINTEGER(0, "proc-map-timeout", &record.opts.proc_map_timeout, |
1378 | "per thread proc mmap processing timeout in ms"), | |
b757bb09 AH |
1379 | OPT_BOOLEAN(0, "switch-events", &record.opts.record_switch_events, |
1380 | "Record context switch events"), | |
85723885 JO |
1381 | OPT_BOOLEAN_FLAG(0, "all-kernel", &record.opts.all_kernel, |
1382 | "Configure all used events to run in kernel space.", | |
1383 | PARSE_OPT_EXCLUSIVE), | |
1384 | OPT_BOOLEAN_FLAG(0, "all-user", &record.opts.all_user, | |
1385 | "Configure all used events to run in user space.", | |
1386 | PARSE_OPT_EXCLUSIVE), | |
71dc2326 WN |
1387 | OPT_STRING(0, "clang-path", &llvm_param.clang_path, "clang path", |
1388 | "clang binary to use for compiling BPF scriptlets"), | |
1389 | OPT_STRING(0, "clang-opt", &llvm_param.clang_opt, "clang options", | |
1390 | "options passed to clang when compiling BPF scriptlets"), | |
7efe0e03 HK |
1391 | OPT_STRING(0, "vmlinux", &symbol_conf.vmlinux_name, |
1392 | "file", "vmlinux pathname"), | |
6156681b NK |
1393 | OPT_BOOLEAN(0, "buildid-all", &record.buildid_all, |
1394 | "Record build-id of all DSOs regardless of hits"), | |
ecfd7a9c WN |
1395 | OPT_BOOLEAN(0, "timestamp-filename", &record.timestamp_filename, |
1396 | "append timestamp to output filename"), | |
3c1cb7e3 WN |
1397 | OPT_BOOLEAN(0, "switch-output", &record.switch_output, |
1398 | "Switch output when receive SIGUSR2"), | |
0aab2136 WN |
1399 | OPT_BOOLEAN(0, "dry-run", &dry_run, |
1400 | "Parse options then exit"), | |
0e9b20b8 IM |
1401 | OPT_END() |
1402 | }; | |
1403 | ||
e5b2c207 NK |
1404 | struct option *record_options = __record_options; |
1405 | ||
1d037ca1 | 1406 | int cmd_record(int argc, const char **argv, const char *prefix __maybe_unused) |
0e9b20b8 | 1407 | { |
ef149c25 | 1408 | int err; |
8c6f45a7 | 1409 | struct record *rec = &record; |
16ad2ffb | 1410 | char errbuf[BUFSIZ]; |
0e9b20b8 | 1411 | |
48e1cab1 WN |
1412 | #ifndef HAVE_LIBBPF_SUPPORT |
1413 | # define set_nobuild(s, l, c) set_option_nobuild(record_options, s, l, "NO_LIBBPF=1", c) | |
1414 | set_nobuild('\0', "clang-path", true); | |
1415 | set_nobuild('\0', "clang-opt", true); | |
1416 | # undef set_nobuild | |
7efe0e03 HK |
1417 | #endif |
1418 | ||
1419 | #ifndef HAVE_BPF_PROLOGUE | |
1420 | # if !defined (HAVE_DWARF_SUPPORT) | |
1421 | # define REASON "NO_DWARF=1" | |
1422 | # elif !defined (HAVE_LIBBPF_SUPPORT) | |
1423 | # define REASON "NO_LIBBPF=1" | |
1424 | # else | |
1425 | # define REASON "this architecture doesn't support BPF prologue" | |
1426 | # endif | |
1427 | # define set_nobuild(s, l, c) set_option_nobuild(record_options, s, l, REASON, c) | |
1428 | set_nobuild('\0', "vmlinux", true); | |
1429 | # undef set_nobuild | |
1430 | # undef REASON | |
48e1cab1 WN |
1431 | #endif |
1432 | ||
3e2be2da ACM |
1433 | rec->evlist = perf_evlist__new(); |
1434 | if (rec->evlist == NULL) | |
361c99a6 ACM |
1435 | return -ENOMEM; |
1436 | ||
eb853e80 JO |
1437 | perf_config(perf_record_config, rec); |
1438 | ||
bca647aa | 1439 | argc = parse_options(argc, argv, record_options, record_usage, |
655000e7 | 1440 | PARSE_OPT_STOP_AT_NON_OPTION); |
602ad878 | 1441 | if (!argc && target__none(&rec->opts.target)) |
bca647aa | 1442 | usage_with_options(record_usage, record_options); |
0e9b20b8 | 1443 | |
bea03405 | 1444 | if (nr_cgroups && !rec->opts.target.system_wide) { |
c7118369 NK |
1445 | usage_with_options_msg(record_usage, record_options, |
1446 | "cgroup monitoring only available in system-wide mode"); | |
1447 | ||
023695d9 | 1448 | } |
b757bb09 AH |
1449 | if (rec->opts.record_switch_events && |
1450 | !perf_can_record_switch_events()) { | |
c7118369 NK |
1451 | ui__error("kernel does not support recording context switch events\n"); |
1452 | parse_options_usage(record_usage, record_options, "switch-events", 0); | |
1453 | return -EINVAL; | |
b757bb09 | 1454 | } |
023695d9 | 1455 | |
eca857ab WN |
1456 | if (rec->switch_output) |
1457 | rec->timestamp_filename = true; | |
1458 | ||
ef149c25 AH |
1459 | if (!rec->itr) { |
1460 | rec->itr = auxtrace_record__init(rec->evlist, &err); | |
1461 | if (err) | |
1462 | return err; | |
1463 | } | |
1464 | ||
2dd6d8a1 AH |
1465 | err = auxtrace_parse_snapshot_options(rec->itr, &rec->opts, |
1466 | rec->opts.auxtrace_snapshot_opts); | |
1467 | if (err) | |
1468 | return err; | |
1469 | ||
0aab2136 WN |
1470 | if (dry_run) |
1471 | return 0; | |
1472 | ||
d7888573 WN |
1473 | err = bpf__setup_stdout(rec->evlist); |
1474 | if (err) { | |
1475 | bpf__strerror_setup_stdout(rec->evlist, err, errbuf, sizeof(errbuf)); | |
1476 | pr_err("ERROR: Setup BPF stdout failed: %s\n", | |
1477 | errbuf); | |
1478 | return err; | |
1479 | } | |
1480 | ||
ef149c25 AH |
1481 | err = -ENOMEM; |
1482 | ||
0a7e6d1b | 1483 | symbol__init(NULL); |
baa2f6ce | 1484 | |
ec80fde7 | 1485 | if (symbol_conf.kptr_restrict) |
646aaea6 ACM |
1486 | pr_warning( |
1487 | "WARNING: Kernel address maps (/proc/{kallsyms,modules}) are restricted,\n" | |
1488 | "check /proc/sys/kernel/kptr_restrict.\n\n" | |
1489 | "Samples in kernel functions may not be resolved if a suitable vmlinux\n" | |
1490 | "file is not found in the buildid cache or in the vmlinux path.\n\n" | |
1491 | "Samples in kernel modules won't be resolved at all.\n\n" | |
1492 | "If some relocation was applied (e.g. kexec) symbols may be misresolved\n" | |
1493 | "even with a suitable vmlinux or kallsyms file.\n\n"); | |
ec80fde7 | 1494 | |
0c1d46a8 | 1495 | if (rec->no_buildid_cache || rec->no_buildid) { |
a1ac1d3c | 1496 | disable_buildid_cache(); |
0c1d46a8 WN |
1497 | } else if (rec->switch_output) { |
1498 | /* | |
1499 | * In 'perf record --switch-output', disable buildid | |
1500 | * generation by default to reduce data file switching | |
1501 | * overhead. Still generate buildid if they are required | |
1502 | * explicitly using | |
1503 | * | |
1504 | * perf record --signal-trigger --no-no-buildid \ | |
1505 | * --no-no-buildid-cache | |
1506 | * | |
1507 | * Following code equals to: | |
1508 | * | |
1509 | * if ((rec->no_buildid || !rec->no_buildid_set) && | |
1510 | * (rec->no_buildid_cache || !rec->no_buildid_cache_set)) | |
1511 | * disable_buildid_cache(); | |
1512 | */ | |
1513 | bool disable = true; | |
1514 | ||
1515 | if (rec->no_buildid_set && !rec->no_buildid) | |
1516 | disable = false; | |
1517 | if (rec->no_buildid_cache_set && !rec->no_buildid_cache) | |
1518 | disable = false; | |
1519 | if (disable) { | |
1520 | rec->no_buildid = true; | |
1521 | rec->no_buildid_cache = true; | |
1522 | disable_buildid_cache(); | |
1523 | } | |
1524 | } | |
655000e7 | 1525 | |
3e2be2da ACM |
1526 | if (rec->evlist->nr_entries == 0 && |
1527 | perf_evlist__add_default(rec->evlist) < 0) { | |
69aad6f1 ACM |
1528 | pr_err("Not enough memory for event selector list\n"); |
1529 | goto out_symbol_exit; | |
bbd36e5e | 1530 | } |
0e9b20b8 | 1531 | |
69e7e5b0 AH |
1532 | if (rec->opts.target.tid && !rec->opts.no_inherit_set) |
1533 | rec->opts.no_inherit = true; | |
1534 | ||
602ad878 | 1535 | err = target__validate(&rec->opts.target); |
16ad2ffb | 1536 | if (err) { |
602ad878 | 1537 | target__strerror(&rec->opts.target, err, errbuf, BUFSIZ); |
16ad2ffb NK |
1538 | ui__warning("%s", errbuf); |
1539 | } | |
1540 | ||
602ad878 | 1541 | err = target__parse_uid(&rec->opts.target); |
16ad2ffb NK |
1542 | if (err) { |
1543 | int saved_errno = errno; | |
4bd0f2d2 | 1544 | |
602ad878 | 1545 | target__strerror(&rec->opts.target, err, errbuf, BUFSIZ); |
3780f488 | 1546 | ui__error("%s", errbuf); |
16ad2ffb NK |
1547 | |
1548 | err = -saved_errno; | |
8fa60e1f | 1549 | goto out_symbol_exit; |
16ad2ffb | 1550 | } |
0d37aa34 | 1551 | |
16ad2ffb | 1552 | err = -ENOMEM; |
3e2be2da | 1553 | if (perf_evlist__create_maps(rec->evlist, &rec->opts.target) < 0) |
dd7927f4 | 1554 | usage_with_options(record_usage, record_options); |
69aad6f1 | 1555 | |
ef149c25 AH |
1556 | err = auxtrace_record__options(rec->itr, rec->evlist, &rec->opts); |
1557 | if (err) | |
1558 | goto out_symbol_exit; | |
1559 | ||
6156681b NK |
1560 | /* |
1561 | * We take all buildids when the file contains | |
1562 | * AUX area tracing data because we do not decode the | |
1563 | * trace because it would take too long. | |
1564 | */ | |
1565 | if (rec->opts.full_auxtrace) | |
1566 | rec->buildid_all = true; | |
1567 | ||
b4006796 | 1568 | if (record_opts__config(&rec->opts)) { |
39d17dac | 1569 | err = -EINVAL; |
03ad9747 | 1570 | goto out_symbol_exit; |
7e4ff9e3 MG |
1571 | } |
1572 | ||
d20deb64 | 1573 | err = __cmd_record(&record, argc, argv); |
d65a458b | 1574 | out_symbol_exit: |
45604710 | 1575 | perf_evlist__delete(rec->evlist); |
d65a458b | 1576 | symbol__exit(); |
ef149c25 | 1577 | auxtrace_record__free(rec->itr); |
39d17dac | 1578 | return err; |
0e9b20b8 | 1579 | } |
2dd6d8a1 AH |
1580 | |
1581 | static void snapshot_sig_handler(int sig __maybe_unused) | |
1582 | { | |
5f9cf599 WN |
1583 | if (trigger_is_ready(&auxtrace_snapshot_trigger)) { |
1584 | trigger_hit(&auxtrace_snapshot_trigger); | |
1585 | auxtrace_record__snapshot_started = 1; | |
1586 | if (auxtrace_record__snapshot_start(record.itr)) | |
1587 | trigger_error(&auxtrace_snapshot_trigger); | |
1588 | } | |
3c1cb7e3 WN |
1589 | |
1590 | if (trigger_is_ready(&switch_output_trigger)) | |
1591 | trigger_hit(&switch_output_trigger); | |
2dd6d8a1 | 1592 | } |