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" |
46bc29b9 | 32 | #include "util/tsc.h" |
f00898f4 | 33 | #include "util/parse-branch-options.h" |
bcc84ec6 | 34 | #include "util/parse-regs-options.h" |
71dc2326 | 35 | #include "util/llvm-utils.h" |
8690a2a7 | 36 | #include "util/bpf-loader.h" |
d8871ea7 | 37 | #include "asm/bug.h" |
7c6a1c65 | 38 | |
97124d5e | 39 | #include <unistd.h> |
de9ac07b | 40 | #include <sched.h> |
a41794cd | 41 | #include <sys/mman.h> |
de9ac07b | 42 | |
78da39fa | 43 | |
8c6f45a7 | 44 | struct record { |
45694aa7 | 45 | struct perf_tool tool; |
b4006796 | 46 | struct record_opts opts; |
d20deb64 | 47 | u64 bytes_written; |
f5fc1412 | 48 | struct perf_data_file file; |
ef149c25 | 49 | struct auxtrace_record *itr; |
d20deb64 ACM |
50 | struct perf_evlist *evlist; |
51 | struct perf_session *session; | |
52 | const char *progname; | |
d20deb64 | 53 | int realtime_prio; |
d20deb64 | 54 | bool no_buildid; |
d2db9a98 | 55 | bool no_buildid_set; |
d20deb64 | 56 | bool no_buildid_cache; |
d2db9a98 | 57 | bool no_buildid_cache_set; |
6156681b | 58 | bool buildid_all; |
9f065194 | 59 | unsigned long long samples; |
0f82ebc4 | 60 | }; |
a21ca2ca | 61 | |
8c6f45a7 | 62 | static int record__write(struct record *rec, void *bf, size_t size) |
f5970550 | 63 | { |
cf8b2e69 | 64 | if (perf_data_file__write(rec->session->file, bf, size) < 0) { |
50a9b868 JO |
65 | pr_err("failed to write perf data, error: %m\n"); |
66 | return -1; | |
f5970550 | 67 | } |
8d3eca20 | 68 | |
cf8b2e69 | 69 | rec->bytes_written += size; |
8d3eca20 | 70 | return 0; |
f5970550 PZ |
71 | } |
72 | ||
45694aa7 | 73 | static int process_synthesized_event(struct perf_tool *tool, |
d20deb64 | 74 | union perf_event *event, |
1d037ca1 IT |
75 | struct perf_sample *sample __maybe_unused, |
76 | struct machine *machine __maybe_unused) | |
234fbbf5 | 77 | { |
8c6f45a7 ACM |
78 | struct record *rec = container_of(tool, struct record, tool); |
79 | return record__write(rec, event, event->header.size); | |
234fbbf5 ACM |
80 | } |
81 | ||
e5685730 | 82 | static int record__mmap_read(struct record *rec, int idx) |
de9ac07b | 83 | { |
e5685730 | 84 | struct perf_mmap *md = &rec->evlist->mmap[idx]; |
7b8283b5 DA |
85 | u64 head = perf_mmap__read_head(md); |
86 | u64 old = md->prev; | |
918512b4 | 87 | unsigned char *data = md->base + page_size; |
de9ac07b PZ |
88 | unsigned long size; |
89 | void *buf; | |
8d3eca20 | 90 | int rc = 0; |
de9ac07b | 91 | |
dc82009a | 92 | if (old == head) |
8d3eca20 | 93 | return 0; |
dc82009a | 94 | |
d20deb64 | 95 | rec->samples++; |
de9ac07b PZ |
96 | |
97 | size = head - old; | |
98 | ||
99 | if ((old & md->mask) + size != (head & md->mask)) { | |
100 | buf = &data[old & md->mask]; | |
101 | size = md->mask + 1 - (old & md->mask); | |
102 | old += size; | |
021e9f47 | 103 | |
8c6f45a7 | 104 | if (record__write(rec, buf, size) < 0) { |
8d3eca20 DA |
105 | rc = -1; |
106 | goto out; | |
107 | } | |
de9ac07b PZ |
108 | } |
109 | ||
110 | buf = &data[old & md->mask]; | |
111 | size = head - old; | |
112 | old += size; | |
021e9f47 | 113 | |
8c6f45a7 | 114 | if (record__write(rec, buf, size) < 0) { |
8d3eca20 DA |
115 | rc = -1; |
116 | goto out; | |
117 | } | |
de9ac07b PZ |
118 | |
119 | md->prev = old; | |
e5685730 | 120 | perf_evlist__mmap_consume(rec->evlist, idx); |
8d3eca20 DA |
121 | out: |
122 | return rc; | |
de9ac07b PZ |
123 | } |
124 | ||
2dd6d8a1 AH |
125 | static volatile int done; |
126 | static volatile int signr = -1; | |
127 | static volatile int child_finished; | |
128 | static volatile int auxtrace_snapshot_enabled; | |
129 | static volatile int auxtrace_snapshot_err; | |
130 | static volatile int auxtrace_record__snapshot_started; | |
131 | ||
132 | static void sig_handler(int sig) | |
133 | { | |
134 | if (sig == SIGCHLD) | |
135 | child_finished = 1; | |
136 | else | |
137 | signr = sig; | |
138 | ||
139 | done = 1; | |
140 | } | |
141 | ||
142 | static void record__sig_exit(void) | |
143 | { | |
144 | if (signr == -1) | |
145 | return; | |
146 | ||
147 | signal(signr, SIG_DFL); | |
148 | raise(signr); | |
149 | } | |
150 | ||
e31f0d01 AH |
151 | #ifdef HAVE_AUXTRACE_SUPPORT |
152 | ||
ef149c25 AH |
153 | static int record__process_auxtrace(struct perf_tool *tool, |
154 | union perf_event *event, void *data1, | |
155 | size_t len1, void *data2, size_t len2) | |
156 | { | |
157 | struct record *rec = container_of(tool, struct record, tool); | |
99fa2984 | 158 | struct perf_data_file *file = &rec->file; |
ef149c25 AH |
159 | size_t padding; |
160 | u8 pad[8] = {0}; | |
161 | ||
99fa2984 AH |
162 | if (!perf_data_file__is_pipe(file)) { |
163 | off_t file_offset; | |
164 | int fd = perf_data_file__fd(file); | |
165 | int err; | |
166 | ||
167 | file_offset = lseek(fd, 0, SEEK_CUR); | |
168 | if (file_offset == -1) | |
169 | return -1; | |
170 | err = auxtrace_index__auxtrace_event(&rec->session->auxtrace_index, | |
171 | event, file_offset); | |
172 | if (err) | |
173 | return err; | |
174 | } | |
175 | ||
ef149c25 AH |
176 | /* event.auxtrace.size includes padding, see __auxtrace_mmap__read() */ |
177 | padding = (len1 + len2) & 7; | |
178 | if (padding) | |
179 | padding = 8 - padding; | |
180 | ||
181 | record__write(rec, event, event->header.size); | |
182 | record__write(rec, data1, len1); | |
183 | if (len2) | |
184 | record__write(rec, data2, len2); | |
185 | record__write(rec, &pad, padding); | |
186 | ||
187 | return 0; | |
188 | } | |
189 | ||
190 | static int record__auxtrace_mmap_read(struct record *rec, | |
191 | struct auxtrace_mmap *mm) | |
192 | { | |
193 | int ret; | |
194 | ||
195 | ret = auxtrace_mmap__read(mm, rec->itr, &rec->tool, | |
196 | record__process_auxtrace); | |
197 | if (ret < 0) | |
198 | return ret; | |
199 | ||
200 | if (ret) | |
201 | rec->samples++; | |
202 | ||
203 | return 0; | |
204 | } | |
205 | ||
2dd6d8a1 AH |
206 | static int record__auxtrace_mmap_read_snapshot(struct record *rec, |
207 | struct auxtrace_mmap *mm) | |
208 | { | |
209 | int ret; | |
210 | ||
211 | ret = auxtrace_mmap__read_snapshot(mm, rec->itr, &rec->tool, | |
212 | record__process_auxtrace, | |
213 | rec->opts.auxtrace_snapshot_size); | |
214 | if (ret < 0) | |
215 | return ret; | |
216 | ||
217 | if (ret) | |
218 | rec->samples++; | |
219 | ||
220 | return 0; | |
221 | } | |
222 | ||
223 | static int record__auxtrace_read_snapshot_all(struct record *rec) | |
224 | { | |
225 | int i; | |
226 | int rc = 0; | |
227 | ||
228 | for (i = 0; i < rec->evlist->nr_mmaps; i++) { | |
229 | struct auxtrace_mmap *mm = | |
230 | &rec->evlist->mmap[i].auxtrace_mmap; | |
231 | ||
232 | if (!mm->base) | |
233 | continue; | |
234 | ||
235 | if (record__auxtrace_mmap_read_snapshot(rec, mm) != 0) { | |
236 | rc = -1; | |
237 | goto out; | |
238 | } | |
239 | } | |
240 | out: | |
241 | return rc; | |
242 | } | |
243 | ||
244 | static void record__read_auxtrace_snapshot(struct record *rec) | |
245 | { | |
246 | pr_debug("Recording AUX area tracing snapshot\n"); | |
247 | if (record__auxtrace_read_snapshot_all(rec) < 0) { | |
248 | auxtrace_snapshot_err = -1; | |
249 | } else { | |
250 | auxtrace_snapshot_err = auxtrace_record__snapshot_finish(rec->itr); | |
251 | if (!auxtrace_snapshot_err) | |
252 | auxtrace_snapshot_enabled = 1; | |
253 | } | |
254 | } | |
255 | ||
e31f0d01 AH |
256 | #else |
257 | ||
258 | static inline | |
259 | int record__auxtrace_mmap_read(struct record *rec __maybe_unused, | |
260 | struct auxtrace_mmap *mm __maybe_unused) | |
261 | { | |
262 | return 0; | |
263 | } | |
264 | ||
2dd6d8a1 AH |
265 | static inline |
266 | void record__read_auxtrace_snapshot(struct record *rec __maybe_unused) | |
de9ac07b | 267 | { |
f7b7c26e PZ |
268 | } |
269 | ||
2dd6d8a1 AH |
270 | static inline |
271 | int auxtrace_record__snapshot_start(struct auxtrace_record *itr __maybe_unused) | |
f7b7c26e | 272 | { |
2dd6d8a1 | 273 | return 0; |
de9ac07b PZ |
274 | } |
275 | ||
2dd6d8a1 AH |
276 | #endif |
277 | ||
8c6f45a7 | 278 | static int record__open(struct record *rec) |
dd7927f4 | 279 | { |
56e52e85 | 280 | char msg[512]; |
6a4bb04c | 281 | struct perf_evsel *pos; |
d20deb64 ACM |
282 | struct perf_evlist *evlist = rec->evlist; |
283 | struct perf_session *session = rec->session; | |
b4006796 | 284 | struct record_opts *opts = &rec->opts; |
8d3eca20 | 285 | int rc = 0; |
dd7927f4 | 286 | |
f77a9518 | 287 | perf_evlist__config(evlist, opts); |
cac21425 | 288 | |
0050f7aa | 289 | evlist__for_each(evlist, pos) { |
dd7927f4 | 290 | try_again: |
d988d5ee | 291 | if (perf_evsel__open(pos, pos->cpus, pos->threads) < 0) { |
56e52e85 | 292 | if (perf_evsel__fallback(pos, errno, msg, sizeof(msg))) { |
d6d901c2 | 293 | if (verbose) |
c0a54341 | 294 | ui__warning("%s\n", msg); |
d6d901c2 ZY |
295 | goto try_again; |
296 | } | |
ca6a4258 | 297 | |
56e52e85 ACM |
298 | rc = -errno; |
299 | perf_evsel__open_strerror(pos, &opts->target, | |
300 | errno, msg, sizeof(msg)); | |
301 | ui__error("%s\n", msg); | |
8d3eca20 | 302 | goto out; |
c171b552 LZ |
303 | } |
304 | } | |
a43d3f08 | 305 | |
23d4aad4 ACM |
306 | if (perf_evlist__apply_filters(evlist, &pos)) { |
307 | error("failed to set filter \"%s\" on event %s with %d (%s)\n", | |
308 | pos->filter, perf_evsel__name(pos), errno, | |
35550da3 | 309 | strerror_r(errno, msg, sizeof(msg))); |
8d3eca20 DA |
310 | rc = -1; |
311 | goto out; | |
0a102479 FW |
312 | } |
313 | ||
ef149c25 | 314 | if (perf_evlist__mmap_ex(evlist, opts->mmap_pages, false, |
2dd6d8a1 AH |
315 | opts->auxtrace_mmap_pages, |
316 | opts->auxtrace_snapshot_mode) < 0) { | |
8d3eca20 DA |
317 | if (errno == EPERM) { |
318 | pr_err("Permission error mapping pages.\n" | |
319 | "Consider increasing " | |
320 | "/proc/sys/kernel/perf_event_mlock_kb,\n" | |
321 | "or try again with a smaller value of -m/--mmap_pages.\n" | |
ef149c25 AH |
322 | "(current value: %u,%u)\n", |
323 | opts->mmap_pages, opts->auxtrace_mmap_pages); | |
8d3eca20 | 324 | rc = -errno; |
8d3eca20 | 325 | } else { |
35550da3 MH |
326 | pr_err("failed to mmap with %d (%s)\n", errno, |
327 | strerror_r(errno, msg, sizeof(msg))); | |
95c36561 WN |
328 | if (errno) |
329 | rc = -errno; | |
330 | else | |
331 | rc = -EINVAL; | |
8d3eca20 DA |
332 | } |
333 | goto out; | |
18e60939 | 334 | } |
0a27d7f9 | 335 | |
563aecb2 | 336 | session->evlist = evlist; |
7b56cce2 | 337 | perf_session__set_id_hdr_size(session); |
8d3eca20 DA |
338 | out: |
339 | return rc; | |
16c8a109 PZ |
340 | } |
341 | ||
e3d59112 NK |
342 | static int process_sample_event(struct perf_tool *tool, |
343 | union perf_event *event, | |
344 | struct perf_sample *sample, | |
345 | struct perf_evsel *evsel, | |
346 | struct machine *machine) | |
347 | { | |
348 | struct record *rec = container_of(tool, struct record, tool); | |
349 | ||
350 | rec->samples++; | |
351 | ||
352 | return build_id__mark_dso_hit(tool, event, sample, evsel, machine); | |
353 | } | |
354 | ||
8c6f45a7 | 355 | static int process_buildids(struct record *rec) |
6122e4e4 | 356 | { |
f5fc1412 JO |
357 | struct perf_data_file *file = &rec->file; |
358 | struct perf_session *session = rec->session; | |
6122e4e4 | 359 | |
457ae94a | 360 | if (file->size == 0) |
9f591fd7 ACM |
361 | return 0; |
362 | ||
00dc8657 NK |
363 | /* |
364 | * During this process, it'll load kernel map and replace the | |
365 | * dso->long_name to a real pathname it found. In this case | |
366 | * we prefer the vmlinux path like | |
367 | * /lib/modules/3.16.4/build/vmlinux | |
368 | * | |
369 | * rather than build-id path (in debug directory). | |
370 | * $HOME/.debug/.build-id/f0/6e17aa50adf4d00b88925e03775de107611551 | |
371 | */ | |
372 | symbol_conf.ignore_vmlinux_buildid = true; | |
373 | ||
6156681b NK |
374 | /* |
375 | * If --buildid-all is given, it marks all DSO regardless of hits, | |
376 | * so no need to process samples. | |
377 | */ | |
378 | if (rec->buildid_all) | |
379 | rec->tool.sample = NULL; | |
380 | ||
b7b61cbe | 381 | return perf_session__process_events(session); |
6122e4e4 ACM |
382 | } |
383 | ||
8115d60c | 384 | static void perf_event__synthesize_guest_os(struct machine *machine, void *data) |
a1645ce1 ZY |
385 | { |
386 | int err; | |
45694aa7 | 387 | struct perf_tool *tool = data; |
a1645ce1 ZY |
388 | /* |
389 | *As for guest kernel when processing subcommand record&report, | |
390 | *we arrange module mmap prior to guest kernel mmap and trigger | |
391 | *a preload dso because default guest module symbols are loaded | |
392 | *from guest kallsyms instead of /lib/modules/XXX/XXX. This | |
393 | *method is used to avoid symbol missing when the first addr is | |
394 | *in module instead of in guest kernel. | |
395 | */ | |
45694aa7 | 396 | err = perf_event__synthesize_modules(tool, process_synthesized_event, |
743eb868 | 397 | machine); |
a1645ce1 ZY |
398 | if (err < 0) |
399 | pr_err("Couldn't record guest kernel [%d]'s reference" | |
23346f21 | 400 | " relocation symbol.\n", machine->pid); |
a1645ce1 | 401 | |
a1645ce1 ZY |
402 | /* |
403 | * We use _stext for guest kernel because guest kernel's /proc/kallsyms | |
404 | * have no _text sometimes. | |
405 | */ | |
45694aa7 | 406 | err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event, |
0ae617be | 407 | machine); |
a1645ce1 ZY |
408 | if (err < 0) |
409 | pr_err("Couldn't record guest kernel [%d]'s reference" | |
23346f21 | 410 | " relocation symbol.\n", machine->pid); |
a1645ce1 ZY |
411 | } |
412 | ||
98402807 FW |
413 | static struct perf_event_header finished_round_event = { |
414 | .size = sizeof(struct perf_event_header), | |
415 | .type = PERF_RECORD_FINISHED_ROUND, | |
416 | }; | |
417 | ||
8c6f45a7 | 418 | static int record__mmap_read_all(struct record *rec) |
98402807 | 419 | { |
dcabb507 | 420 | u64 bytes_written = rec->bytes_written; |
0e2e63dd | 421 | int i; |
8d3eca20 | 422 | int rc = 0; |
98402807 | 423 | |
d20deb64 | 424 | for (i = 0; i < rec->evlist->nr_mmaps; i++) { |
ef149c25 AH |
425 | struct auxtrace_mmap *mm = &rec->evlist->mmap[i].auxtrace_mmap; |
426 | ||
8d3eca20 | 427 | if (rec->evlist->mmap[i].base) { |
e5685730 | 428 | if (record__mmap_read(rec, i) != 0) { |
8d3eca20 DA |
429 | rc = -1; |
430 | goto out; | |
431 | } | |
432 | } | |
ef149c25 | 433 | |
2dd6d8a1 | 434 | if (mm->base && !rec->opts.auxtrace_snapshot_mode && |
ef149c25 AH |
435 | record__auxtrace_mmap_read(rec, mm) != 0) { |
436 | rc = -1; | |
437 | goto out; | |
438 | } | |
98402807 FW |
439 | } |
440 | ||
dcabb507 JO |
441 | /* |
442 | * Mark the round finished in case we wrote | |
443 | * at least one event. | |
444 | */ | |
445 | if (bytes_written != rec->bytes_written) | |
446 | rc = record__write(rec, &finished_round_event, sizeof(finished_round_event)); | |
8d3eca20 DA |
447 | |
448 | out: | |
449 | return rc; | |
98402807 FW |
450 | } |
451 | ||
8c6f45a7 | 452 | static void record__init_features(struct record *rec) |
57706abc | 453 | { |
57706abc DA |
454 | struct perf_session *session = rec->session; |
455 | int feat; | |
456 | ||
457 | for (feat = HEADER_FIRST_FEATURE; feat < HEADER_LAST_FEATURE; feat++) | |
458 | perf_header__set_feat(&session->header, feat); | |
459 | ||
460 | if (rec->no_buildid) | |
461 | perf_header__clear_feat(&session->header, HEADER_BUILD_ID); | |
462 | ||
3e2be2da | 463 | if (!have_tracepoints(&rec->evlist->entries)) |
57706abc DA |
464 | perf_header__clear_feat(&session->header, HEADER_TRACING_DATA); |
465 | ||
466 | if (!rec->opts.branch_stack) | |
467 | perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK); | |
ef149c25 AH |
468 | |
469 | if (!rec->opts.full_auxtrace) | |
470 | perf_header__clear_feat(&session->header, HEADER_AUXTRACE); | |
ffa517ad JO |
471 | |
472 | perf_header__clear_feat(&session->header, HEADER_STAT); | |
57706abc DA |
473 | } |
474 | ||
e1ab48ba WN |
475 | static void |
476 | record__finish_output(struct record *rec) | |
477 | { | |
478 | struct perf_data_file *file = &rec->file; | |
479 | int fd = perf_data_file__fd(file); | |
480 | ||
481 | if (file->is_pipe) | |
482 | return; | |
483 | ||
484 | rec->session->header.data_size += rec->bytes_written; | |
485 | file->size = lseek(perf_data_file__fd(file), 0, SEEK_CUR); | |
486 | ||
487 | if (!rec->no_buildid) { | |
488 | process_buildids(rec); | |
489 | ||
490 | if (rec->buildid_all) | |
491 | dsos__hit_all(rec->session); | |
492 | } | |
493 | perf_session__write_header(rec->session, rec->evlist, fd, true); | |
494 | ||
495 | return; | |
496 | } | |
497 | ||
f33cbe72 ACM |
498 | static volatile int workload_exec_errno; |
499 | ||
500 | /* | |
501 | * perf_evlist__prepare_workload will send a SIGUSR1 | |
502 | * if the fork fails, since we asked by setting its | |
503 | * want_signal to true. | |
504 | */ | |
45604710 NK |
505 | static void workload_exec_failed_signal(int signo __maybe_unused, |
506 | siginfo_t *info, | |
f33cbe72 ACM |
507 | void *ucontext __maybe_unused) |
508 | { | |
509 | workload_exec_errno = info->si_value.sival_int; | |
510 | done = 1; | |
f33cbe72 ACM |
511 | child_finished = 1; |
512 | } | |
513 | ||
2dd6d8a1 AH |
514 | static void snapshot_sig_handler(int sig); |
515 | ||
46bc29b9 AH |
516 | int __weak |
517 | perf_event__synth_time_conv(const struct perf_event_mmap_page *pc __maybe_unused, | |
518 | struct perf_tool *tool __maybe_unused, | |
519 | perf_event__handler_t process __maybe_unused, | |
520 | struct machine *machine __maybe_unused) | |
521 | { | |
522 | return 0; | |
523 | } | |
524 | ||
c45c86eb WN |
525 | static int record__synthesize(struct record *rec) |
526 | { | |
527 | struct perf_session *session = rec->session; | |
528 | struct machine *machine = &session->machines.host; | |
529 | struct perf_data_file *file = &rec->file; | |
530 | struct record_opts *opts = &rec->opts; | |
531 | struct perf_tool *tool = &rec->tool; | |
532 | int fd = perf_data_file__fd(file); | |
533 | int err = 0; | |
534 | ||
535 | if (file->is_pipe) { | |
536 | err = perf_event__synthesize_attrs(tool, session, | |
537 | process_synthesized_event); | |
538 | if (err < 0) { | |
539 | pr_err("Couldn't synthesize attrs.\n"); | |
540 | goto out; | |
541 | } | |
542 | ||
543 | if (have_tracepoints(&rec->evlist->entries)) { | |
544 | /* | |
545 | * FIXME err <= 0 here actually means that | |
546 | * there were no tracepoints so its not really | |
547 | * an error, just that we don't need to | |
548 | * synthesize anything. We really have to | |
549 | * return this more properly and also | |
550 | * propagate errors that now are calling die() | |
551 | */ | |
552 | err = perf_event__synthesize_tracing_data(tool, fd, rec->evlist, | |
553 | process_synthesized_event); | |
554 | if (err <= 0) { | |
555 | pr_err("Couldn't record tracing data.\n"); | |
556 | goto out; | |
557 | } | |
558 | rec->bytes_written += err; | |
559 | } | |
560 | } | |
561 | ||
46bc29b9 AH |
562 | err = perf_event__synth_time_conv(rec->evlist->mmap[0].base, tool, |
563 | process_synthesized_event, machine); | |
564 | if (err) | |
565 | goto out; | |
566 | ||
c45c86eb WN |
567 | if (rec->opts.full_auxtrace) { |
568 | err = perf_event__synthesize_auxtrace_info(rec->itr, tool, | |
569 | session, process_synthesized_event); | |
570 | if (err) | |
571 | goto out; | |
572 | } | |
573 | ||
574 | err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event, | |
575 | machine); | |
576 | WARN_ONCE(err < 0, "Couldn't record kernel reference relocation symbol\n" | |
577 | "Symbol resolution may be skewed if relocation was used (e.g. kexec).\n" | |
578 | "Check /proc/kallsyms permission or run as root.\n"); | |
579 | ||
580 | err = perf_event__synthesize_modules(tool, process_synthesized_event, | |
581 | machine); | |
582 | WARN_ONCE(err < 0, "Couldn't record kernel module information.\n" | |
583 | "Symbol resolution may be skewed if relocation was used (e.g. kexec).\n" | |
584 | "Check /proc/modules permission or run as root.\n"); | |
585 | ||
586 | if (perf_guest) { | |
587 | machines__process_guests(&session->machines, | |
588 | perf_event__synthesize_guest_os, tool); | |
589 | } | |
590 | ||
591 | err = __machine__synthesize_threads(machine, tool, &opts->target, rec->evlist->threads, | |
592 | process_synthesized_event, opts->sample_address, | |
593 | opts->proc_map_timeout); | |
594 | out: | |
595 | return err; | |
596 | } | |
597 | ||
8c6f45a7 | 598 | static int __cmd_record(struct record *rec, int argc, const char **argv) |
16c8a109 | 599 | { |
57706abc | 600 | int err; |
45604710 | 601 | int status = 0; |
8b412664 | 602 | unsigned long waking = 0; |
46be604b | 603 | const bool forks = argc > 0; |
23346f21 | 604 | struct machine *machine; |
45694aa7 | 605 | struct perf_tool *tool = &rec->tool; |
b4006796 | 606 | struct record_opts *opts = &rec->opts; |
f5fc1412 | 607 | struct perf_data_file *file = &rec->file; |
d20deb64 | 608 | struct perf_session *session; |
6dcf45ef | 609 | bool disabled = false, draining = false; |
42aa276f | 610 | int fd; |
de9ac07b | 611 | |
d20deb64 | 612 | rec->progname = argv[0]; |
33e49ea7 | 613 | |
45604710 | 614 | atexit(record__sig_exit); |
f5970550 PZ |
615 | signal(SIGCHLD, sig_handler); |
616 | signal(SIGINT, sig_handler); | |
804f7ac7 | 617 | signal(SIGTERM, sig_handler); |
2dd6d8a1 AH |
618 | if (rec->opts.auxtrace_snapshot_mode) |
619 | signal(SIGUSR2, snapshot_sig_handler); | |
620 | else | |
621 | signal(SIGUSR2, SIG_IGN); | |
f5970550 | 622 | |
b7b61cbe | 623 | session = perf_session__new(file, false, tool); |
94c744b6 | 624 | if (session == NULL) { |
ffa91880 | 625 | pr_err("Perf session creation failed.\n"); |
a9a70bbc ACM |
626 | return -1; |
627 | } | |
628 | ||
42aa276f | 629 | fd = perf_data_file__fd(file); |
d20deb64 ACM |
630 | rec->session = session; |
631 | ||
8c6f45a7 | 632 | record__init_features(rec); |
330aa675 | 633 | |
d4db3f16 | 634 | if (forks) { |
3e2be2da | 635 | err = perf_evlist__prepare_workload(rec->evlist, &opts->target, |
f5fc1412 | 636 | argv, file->is_pipe, |
735f7e0b | 637 | workload_exec_failed_signal); |
35b9d88e ACM |
638 | if (err < 0) { |
639 | pr_err("Couldn't run the workload!\n"); | |
45604710 | 640 | status = err; |
35b9d88e | 641 | goto out_delete_session; |
856e9660 | 642 | } |
856e9660 PZ |
643 | } |
644 | ||
8c6f45a7 | 645 | if (record__open(rec) != 0) { |
8d3eca20 | 646 | err = -1; |
45604710 | 647 | goto out_child; |
8d3eca20 | 648 | } |
de9ac07b | 649 | |
8690a2a7 WN |
650 | err = bpf__apply_obj_config(); |
651 | if (err) { | |
652 | char errbuf[BUFSIZ]; | |
653 | ||
654 | bpf__strerror_apply_obj_config(err, errbuf, sizeof(errbuf)); | |
655 | pr_err("ERROR: Apply config to BPF failed: %s\n", | |
656 | errbuf); | |
657 | goto out_child; | |
658 | } | |
659 | ||
cca8482c AH |
660 | /* |
661 | * Normally perf_session__new would do this, but it doesn't have the | |
662 | * evlist. | |
663 | */ | |
664 | if (rec->tool.ordered_events && !perf_evlist__sample_id_all(rec->evlist)) { | |
665 | pr_warning("WARNING: No sample_id_all support, falling back to unordered processing\n"); | |
666 | rec->tool.ordered_events = false; | |
667 | } | |
668 | ||
3e2be2da | 669 | if (!rec->evlist->nr_groups) |
a8bb559b NK |
670 | perf_header__clear_feat(&session->header, HEADER_GROUP_DESC); |
671 | ||
f5fc1412 | 672 | if (file->is_pipe) { |
42aa276f | 673 | err = perf_header__write_pipe(fd); |
529870e3 | 674 | if (err < 0) |
45604710 | 675 | goto out_child; |
563aecb2 | 676 | } else { |
42aa276f | 677 | err = perf_session__write_header(session, rec->evlist, fd, false); |
d5eed904 | 678 | if (err < 0) |
45604710 | 679 | goto out_child; |
56b03f3c ACM |
680 | } |
681 | ||
d3665498 | 682 | if (!rec->no_buildid |
e20960c0 | 683 | && !perf_header__has_feat(&session->header, HEADER_BUILD_ID)) { |
d3665498 | 684 | pr_err("Couldn't generate buildids. " |
e20960c0 | 685 | "Use --no-buildid to profile anyway.\n"); |
8d3eca20 | 686 | err = -1; |
45604710 | 687 | goto out_child; |
e20960c0 RR |
688 | } |
689 | ||
34ba5122 | 690 | machine = &session->machines.host; |
743eb868 | 691 | |
c45c86eb WN |
692 | err = record__synthesize(rec); |
693 | if (err < 0) | |
45604710 | 694 | goto out_child; |
8d3eca20 | 695 | |
d20deb64 | 696 | if (rec->realtime_prio) { |
de9ac07b PZ |
697 | struct sched_param param; |
698 | ||
d20deb64 | 699 | param.sched_priority = rec->realtime_prio; |
de9ac07b | 700 | if (sched_setscheduler(0, SCHED_FIFO, ¶m)) { |
6beba7ad | 701 | pr_err("Could not set realtime priority.\n"); |
8d3eca20 | 702 | err = -1; |
45604710 | 703 | goto out_child; |
de9ac07b PZ |
704 | } |
705 | } | |
706 | ||
774cb499 JO |
707 | /* |
708 | * When perf is starting the traced process, all the events | |
709 | * (apart from group members) have enable_on_exec=1 set, | |
710 | * so don't spoil it by prematurely enabling them. | |
711 | */ | |
6619a53e | 712 | if (!target__none(&opts->target) && !opts->initial_delay) |
3e2be2da | 713 | perf_evlist__enable(rec->evlist); |
764e16a3 | 714 | |
856e9660 PZ |
715 | /* |
716 | * Let the child rip | |
717 | */ | |
e803cf97 | 718 | if (forks) { |
e5bed564 NK |
719 | union perf_event *event; |
720 | ||
721 | event = malloc(sizeof(event->comm) + machine->id_hdr_size); | |
722 | if (event == NULL) { | |
723 | err = -ENOMEM; | |
724 | goto out_child; | |
725 | } | |
726 | ||
e803cf97 NK |
727 | /* |
728 | * Some H/W events are generated before COMM event | |
729 | * which is emitted during exec(), so perf script | |
730 | * cannot see a correct process name for those events. | |
731 | * Synthesize COMM event to prevent it. | |
732 | */ | |
e5bed564 | 733 | perf_event__synthesize_comm(tool, event, |
e803cf97 NK |
734 | rec->evlist->workload.pid, |
735 | process_synthesized_event, | |
736 | machine); | |
e5bed564 | 737 | free(event); |
e803cf97 | 738 | |
3e2be2da | 739 | perf_evlist__start_workload(rec->evlist); |
e803cf97 | 740 | } |
856e9660 | 741 | |
6619a53e AK |
742 | if (opts->initial_delay) { |
743 | usleep(opts->initial_delay * 1000); | |
744 | perf_evlist__enable(rec->evlist); | |
745 | } | |
746 | ||
2dd6d8a1 | 747 | auxtrace_snapshot_enabled = 1; |
649c48a9 | 748 | for (;;) { |
9f065194 | 749 | unsigned long long hits = rec->samples; |
de9ac07b | 750 | |
8c6f45a7 | 751 | if (record__mmap_read_all(rec) < 0) { |
2dd6d8a1 | 752 | auxtrace_snapshot_enabled = 0; |
8d3eca20 | 753 | err = -1; |
45604710 | 754 | goto out_child; |
8d3eca20 | 755 | } |
de9ac07b | 756 | |
2dd6d8a1 AH |
757 | if (auxtrace_record__snapshot_started) { |
758 | auxtrace_record__snapshot_started = 0; | |
759 | if (!auxtrace_snapshot_err) | |
760 | record__read_auxtrace_snapshot(rec); | |
761 | if (auxtrace_snapshot_err) { | |
762 | pr_err("AUX area tracing snapshot failed\n"); | |
763 | err = -1; | |
764 | goto out_child; | |
765 | } | |
766 | } | |
767 | ||
d20deb64 | 768 | if (hits == rec->samples) { |
6dcf45ef | 769 | if (done || draining) |
649c48a9 | 770 | break; |
f66a889d | 771 | err = perf_evlist__poll(rec->evlist, -1); |
a515114f JO |
772 | /* |
773 | * Propagate error, only if there's any. Ignore positive | |
774 | * number of returned events and interrupt error. | |
775 | */ | |
776 | if (err > 0 || (err < 0 && errno == EINTR)) | |
45604710 | 777 | err = 0; |
8b412664 | 778 | waking++; |
6dcf45ef ACM |
779 | |
780 | if (perf_evlist__filter_pollfd(rec->evlist, POLLERR | POLLHUP) == 0) | |
781 | draining = true; | |
8b412664 PZ |
782 | } |
783 | ||
774cb499 JO |
784 | /* |
785 | * When perf is starting the traced process, at the end events | |
786 | * die with the process and we wait for that. Thus no need to | |
787 | * disable events in this case. | |
788 | */ | |
602ad878 | 789 | if (done && !disabled && !target__none(&opts->target)) { |
2dd6d8a1 | 790 | auxtrace_snapshot_enabled = 0; |
3e2be2da | 791 | perf_evlist__disable(rec->evlist); |
2711926a JO |
792 | disabled = true; |
793 | } | |
de9ac07b | 794 | } |
2dd6d8a1 | 795 | auxtrace_snapshot_enabled = 0; |
de9ac07b | 796 | |
f33cbe72 | 797 | if (forks && workload_exec_errno) { |
35550da3 | 798 | char msg[STRERR_BUFSIZE]; |
f33cbe72 ACM |
799 | const char *emsg = strerror_r(workload_exec_errno, msg, sizeof(msg)); |
800 | pr_err("Workload failed: %s\n", emsg); | |
801 | err = -1; | |
45604710 | 802 | goto out_child; |
f33cbe72 ACM |
803 | } |
804 | ||
e3d59112 | 805 | if (!quiet) |
45604710 | 806 | fprintf(stderr, "[ perf record: Woken up %ld times to write data ]\n", waking); |
b44308f5 | 807 | |
45604710 NK |
808 | out_child: |
809 | if (forks) { | |
810 | int exit_status; | |
addc2785 | 811 | |
45604710 NK |
812 | if (!child_finished) |
813 | kill(rec->evlist->workload.pid, SIGTERM); | |
814 | ||
815 | wait(&exit_status); | |
816 | ||
817 | if (err < 0) | |
818 | status = err; | |
819 | else if (WIFEXITED(exit_status)) | |
820 | status = WEXITSTATUS(exit_status); | |
821 | else if (WIFSIGNALED(exit_status)) | |
822 | signr = WTERMSIG(exit_status); | |
823 | } else | |
824 | status = err; | |
825 | ||
e3d59112 NK |
826 | /* this will be recalculated during process_buildids() */ |
827 | rec->samples = 0; | |
828 | ||
e1ab48ba WN |
829 | if (!err) |
830 | record__finish_output(rec); | |
39d17dac | 831 | |
e3d59112 NK |
832 | if (!err && !quiet) { |
833 | char samples[128]; | |
834 | ||
ef149c25 | 835 | if (rec->samples && !rec->opts.full_auxtrace) |
e3d59112 NK |
836 | scnprintf(samples, sizeof(samples), |
837 | " (%" PRIu64 " samples)", rec->samples); | |
838 | else | |
839 | samples[0] = '\0'; | |
840 | ||
841 | fprintf(stderr, "[ perf record: Captured and wrote %.3f MB %s%s ]\n", | |
842 | perf_data_file__size(file) / 1024.0 / 1024.0, | |
843 | file->path, samples); | |
844 | } | |
845 | ||
39d17dac ACM |
846 | out_delete_session: |
847 | perf_session__delete(session); | |
45604710 | 848 | return status; |
de9ac07b | 849 | } |
0e9b20b8 | 850 | |
72a128aa | 851 | static void callchain_debug(void) |
09b0fd45 | 852 | { |
aad2b21c | 853 | static const char *str[CALLCHAIN_MAX] = { "NONE", "FP", "DWARF", "LBR" }; |
a601fdff | 854 | |
72a128aa | 855 | pr_debug("callchain: type %s\n", str[callchain_param.record_mode]); |
26d33022 | 856 | |
72a128aa | 857 | if (callchain_param.record_mode == CALLCHAIN_DWARF) |
09b0fd45 | 858 | pr_debug("callchain: stack dump size %d\n", |
72a128aa | 859 | callchain_param.dump_size); |
09b0fd45 JO |
860 | } |
861 | ||
c421e80b | 862 | int record_parse_callchain_opt(const struct option *opt, |
09b0fd45 JO |
863 | const char *arg, |
864 | int unset) | |
865 | { | |
09b0fd45 | 866 | int ret; |
c421e80b | 867 | struct record_opts *record = (struct record_opts *)opt->value; |
09b0fd45 | 868 | |
c421e80b | 869 | record->callgraph_set = true; |
72a128aa | 870 | callchain_param.enabled = !unset; |
eb853e80 | 871 | |
09b0fd45 JO |
872 | /* --no-call-graph */ |
873 | if (unset) { | |
72a128aa | 874 | callchain_param.record_mode = CALLCHAIN_NONE; |
09b0fd45 JO |
875 | pr_debug("callchain: disabled\n"); |
876 | return 0; | |
877 | } | |
878 | ||
c3a6a8c4 | 879 | ret = parse_callchain_record_opt(arg, &callchain_param); |
5c0cf224 JO |
880 | if (!ret) { |
881 | /* Enable data address sampling for DWARF unwind. */ | |
882 | if (callchain_param.record_mode == CALLCHAIN_DWARF) | |
883 | record->sample_address = true; | |
72a128aa | 884 | callchain_debug(); |
5c0cf224 | 885 | } |
26d33022 JO |
886 | |
887 | return ret; | |
888 | } | |
889 | ||
c421e80b | 890 | int record_callchain_opt(const struct option *opt, |
09b0fd45 JO |
891 | const char *arg __maybe_unused, |
892 | int unset __maybe_unused) | |
893 | { | |
c421e80b KL |
894 | struct record_opts *record = (struct record_opts *)opt->value; |
895 | ||
896 | record->callgraph_set = true; | |
72a128aa | 897 | callchain_param.enabled = true; |
09b0fd45 | 898 | |
72a128aa NK |
899 | if (callchain_param.record_mode == CALLCHAIN_NONE) |
900 | callchain_param.record_mode = CALLCHAIN_FP; | |
eb853e80 | 901 | |
72a128aa | 902 | callchain_debug(); |
09b0fd45 JO |
903 | return 0; |
904 | } | |
905 | ||
eb853e80 JO |
906 | static int perf_record_config(const char *var, const char *value, void *cb) |
907 | { | |
7a29c087 NK |
908 | struct record *rec = cb; |
909 | ||
910 | if (!strcmp(var, "record.build-id")) { | |
911 | if (!strcmp(value, "cache")) | |
912 | rec->no_buildid_cache = false; | |
913 | else if (!strcmp(value, "no-cache")) | |
914 | rec->no_buildid_cache = true; | |
915 | else if (!strcmp(value, "skip")) | |
916 | rec->no_buildid = true; | |
917 | else | |
918 | return -1; | |
919 | return 0; | |
920 | } | |
eb853e80 | 921 | if (!strcmp(var, "record.call-graph")) |
5a2e5e85 | 922 | var = "call-graph.record-mode"; /* fall-through */ |
eb853e80 JO |
923 | |
924 | return perf_default_config(var, value, cb); | |
925 | } | |
926 | ||
814c8c38 PZ |
927 | struct clockid_map { |
928 | const char *name; | |
929 | int clockid; | |
930 | }; | |
931 | ||
932 | #define CLOCKID_MAP(n, c) \ | |
933 | { .name = n, .clockid = (c), } | |
934 | ||
935 | #define CLOCKID_END { .name = NULL, } | |
936 | ||
937 | ||
938 | /* | |
939 | * Add the missing ones, we need to build on many distros... | |
940 | */ | |
941 | #ifndef CLOCK_MONOTONIC_RAW | |
942 | #define CLOCK_MONOTONIC_RAW 4 | |
943 | #endif | |
944 | #ifndef CLOCK_BOOTTIME | |
945 | #define CLOCK_BOOTTIME 7 | |
946 | #endif | |
947 | #ifndef CLOCK_TAI | |
948 | #define CLOCK_TAI 11 | |
949 | #endif | |
950 | ||
951 | static const struct clockid_map clockids[] = { | |
952 | /* available for all events, NMI safe */ | |
953 | CLOCKID_MAP("monotonic", CLOCK_MONOTONIC), | |
954 | CLOCKID_MAP("monotonic_raw", CLOCK_MONOTONIC_RAW), | |
955 | ||
956 | /* available for some events */ | |
957 | CLOCKID_MAP("realtime", CLOCK_REALTIME), | |
958 | CLOCKID_MAP("boottime", CLOCK_BOOTTIME), | |
959 | CLOCKID_MAP("tai", CLOCK_TAI), | |
960 | ||
961 | /* available for the lazy */ | |
962 | CLOCKID_MAP("mono", CLOCK_MONOTONIC), | |
963 | CLOCKID_MAP("raw", CLOCK_MONOTONIC_RAW), | |
964 | CLOCKID_MAP("real", CLOCK_REALTIME), | |
965 | CLOCKID_MAP("boot", CLOCK_BOOTTIME), | |
966 | ||
967 | CLOCKID_END, | |
968 | }; | |
969 | ||
970 | static int parse_clockid(const struct option *opt, const char *str, int unset) | |
971 | { | |
972 | struct record_opts *opts = (struct record_opts *)opt->value; | |
973 | const struct clockid_map *cm; | |
974 | const char *ostr = str; | |
975 | ||
976 | if (unset) { | |
977 | opts->use_clockid = 0; | |
978 | return 0; | |
979 | } | |
980 | ||
981 | /* no arg passed */ | |
982 | if (!str) | |
983 | return 0; | |
984 | ||
985 | /* no setting it twice */ | |
986 | if (opts->use_clockid) | |
987 | return -1; | |
988 | ||
989 | opts->use_clockid = true; | |
990 | ||
991 | /* if its a number, we're done */ | |
992 | if (sscanf(str, "%d", &opts->clockid) == 1) | |
993 | return 0; | |
994 | ||
995 | /* allow a "CLOCK_" prefix to the name */ | |
996 | if (!strncasecmp(str, "CLOCK_", 6)) | |
997 | str += 6; | |
998 | ||
999 | for (cm = clockids; cm->name; cm++) { | |
1000 | if (!strcasecmp(str, cm->name)) { | |
1001 | opts->clockid = cm->clockid; | |
1002 | return 0; | |
1003 | } | |
1004 | } | |
1005 | ||
1006 | opts->use_clockid = false; | |
1007 | ui__warning("unknown clockid %s, check man page\n", ostr); | |
1008 | return -1; | |
1009 | } | |
1010 | ||
e9db1310 AH |
1011 | static int record__parse_mmap_pages(const struct option *opt, |
1012 | const char *str, | |
1013 | int unset __maybe_unused) | |
1014 | { | |
1015 | struct record_opts *opts = opt->value; | |
1016 | char *s, *p; | |
1017 | unsigned int mmap_pages; | |
1018 | int ret; | |
1019 | ||
1020 | if (!str) | |
1021 | return -EINVAL; | |
1022 | ||
1023 | s = strdup(str); | |
1024 | if (!s) | |
1025 | return -ENOMEM; | |
1026 | ||
1027 | p = strchr(s, ','); | |
1028 | if (p) | |
1029 | *p = '\0'; | |
1030 | ||
1031 | if (*s) { | |
1032 | ret = __perf_evlist__parse_mmap_pages(&mmap_pages, s); | |
1033 | if (ret) | |
1034 | goto out_free; | |
1035 | opts->mmap_pages = mmap_pages; | |
1036 | } | |
1037 | ||
1038 | if (!p) { | |
1039 | ret = 0; | |
1040 | goto out_free; | |
1041 | } | |
1042 | ||
1043 | ret = __perf_evlist__parse_mmap_pages(&mmap_pages, p + 1); | |
1044 | if (ret) | |
1045 | goto out_free; | |
1046 | ||
1047 | opts->auxtrace_mmap_pages = mmap_pages; | |
1048 | ||
1049 | out_free: | |
1050 | free(s); | |
1051 | return ret; | |
1052 | } | |
1053 | ||
e5b2c207 | 1054 | static const char * const __record_usage[] = { |
9e096753 MG |
1055 | "perf record [<options>] [<command>]", |
1056 | "perf record [<options>] -- <command> [<options>]", | |
0e9b20b8 IM |
1057 | NULL |
1058 | }; | |
e5b2c207 | 1059 | const char * const *record_usage = __record_usage; |
0e9b20b8 | 1060 | |
d20deb64 | 1061 | /* |
8c6f45a7 ACM |
1062 | * XXX Ideally would be local to cmd_record() and passed to a record__new |
1063 | * because we need to have access to it in record__exit, that is called | |
d20deb64 ACM |
1064 | * after cmd_record() exits, but since record_options need to be accessible to |
1065 | * builtin-script, leave it here. | |
1066 | * | |
1067 | * At least we don't ouch it in all the other functions here directly. | |
1068 | * | |
1069 | * Just say no to tons of global variables, sigh. | |
1070 | */ | |
8c6f45a7 | 1071 | static struct record record = { |
d20deb64 | 1072 | .opts = { |
8affc2b8 | 1073 | .sample_time = true, |
d20deb64 ACM |
1074 | .mmap_pages = UINT_MAX, |
1075 | .user_freq = UINT_MAX, | |
1076 | .user_interval = ULLONG_MAX, | |
447a6013 | 1077 | .freq = 4000, |
d1cb9fce NK |
1078 | .target = { |
1079 | .uses_mmap = true, | |
3aa5939d | 1080 | .default_per_cpu = true, |
d1cb9fce | 1081 | }, |
9d9cad76 | 1082 | .proc_map_timeout = 500, |
d20deb64 | 1083 | }, |
e3d59112 NK |
1084 | .tool = { |
1085 | .sample = process_sample_event, | |
1086 | .fork = perf_event__process_fork, | |
cca8482c | 1087 | .exit = perf_event__process_exit, |
e3d59112 NK |
1088 | .comm = perf_event__process_comm, |
1089 | .mmap = perf_event__process_mmap, | |
1090 | .mmap2 = perf_event__process_mmap2, | |
cca8482c | 1091 | .ordered_events = true, |
e3d59112 | 1092 | }, |
d20deb64 | 1093 | }; |
7865e817 | 1094 | |
76a26549 NK |
1095 | const char record_callchain_help[] = CALLCHAIN_RECORD_HELP |
1096 | "\n\t\t\t\tDefault: fp"; | |
61eaa3be | 1097 | |
d20deb64 ACM |
1098 | /* |
1099 | * XXX Will stay a global variable till we fix builtin-script.c to stop messing | |
1100 | * with it and switch to use the library functions in perf_evlist that came | |
b4006796 | 1101 | * from builtin-record.c, i.e. use record_opts, |
d20deb64 ACM |
1102 | * perf_evlist__prepare_workload, etc instead of fork+exec'in 'perf record', |
1103 | * using pipes, etc. | |
1104 | */ | |
e5b2c207 | 1105 | struct option __record_options[] = { |
d20deb64 | 1106 | OPT_CALLBACK('e', "event", &record.evlist, "event", |
86847b62 | 1107 | "event selector. use 'perf list' to list available events", |
f120f9d5 | 1108 | parse_events_option), |
d20deb64 | 1109 | OPT_CALLBACK(0, "filter", &record.evlist, "filter", |
c171b552 | 1110 | "event filter", parse_filter), |
4ba1faa1 WN |
1111 | OPT_CALLBACK_NOOPT(0, "exclude-perf", &record.evlist, |
1112 | NULL, "don't record events from perf itself", | |
1113 | exclude_perf), | |
bea03405 | 1114 | OPT_STRING('p', "pid", &record.opts.target.pid, "pid", |
d6d901c2 | 1115 | "record events on existing process id"), |
bea03405 | 1116 | OPT_STRING('t', "tid", &record.opts.target.tid, "tid", |
d6d901c2 | 1117 | "record events on existing thread id"), |
d20deb64 | 1118 | OPT_INTEGER('r', "realtime", &record.realtime_prio, |
0e9b20b8 | 1119 | "collect data with this RT SCHED_FIFO priority"), |
509051ea | 1120 | OPT_BOOLEAN(0, "no-buffering", &record.opts.no_buffering, |
acac03fa | 1121 | "collect data without buffering"), |
d20deb64 | 1122 | OPT_BOOLEAN('R', "raw-samples", &record.opts.raw_samples, |
daac07b2 | 1123 | "collect raw sample records from all opened counters"), |
bea03405 | 1124 | OPT_BOOLEAN('a', "all-cpus", &record.opts.target.system_wide, |
0e9b20b8 | 1125 | "system-wide collection from all CPUs"), |
bea03405 | 1126 | OPT_STRING('C', "cpu", &record.opts.target.cpu_list, "cpu", |
c45c6ea2 | 1127 | "list of cpus to monitor"), |
d20deb64 | 1128 | OPT_U64('c', "count", &record.opts.user_interval, "event period to sample"), |
f5fc1412 | 1129 | OPT_STRING('o', "output", &record.file.path, "file", |
abaff32a | 1130 | "output file name"), |
69e7e5b0 AH |
1131 | OPT_BOOLEAN_SET('i', "no-inherit", &record.opts.no_inherit, |
1132 | &record.opts.no_inherit_set, | |
1133 | "child tasks do not inherit counters"), | |
d20deb64 | 1134 | OPT_UINTEGER('F', "freq", &record.opts.user_freq, "profile at this frequency"), |
e9db1310 AH |
1135 | OPT_CALLBACK('m', "mmap-pages", &record.opts, "pages[,pages]", |
1136 | "number of mmap data pages and AUX area tracing mmap pages", | |
1137 | record__parse_mmap_pages), | |
d20deb64 | 1138 | OPT_BOOLEAN(0, "group", &record.opts.group, |
43bece79 | 1139 | "put the counters into a counter group"), |
09b0fd45 JO |
1140 | OPT_CALLBACK_NOOPT('g', NULL, &record.opts, |
1141 | NULL, "enables call-graph recording" , | |
1142 | &record_callchain_opt), | |
1143 | OPT_CALLBACK(0, "call-graph", &record.opts, | |
76a26549 | 1144 | "record_mode[,record_size]", record_callchain_help, |
09b0fd45 | 1145 | &record_parse_callchain_opt), |
c0555642 | 1146 | OPT_INCR('v', "verbose", &verbose, |
3da297a6 | 1147 | "be more verbose (show counter open errors, etc)"), |
b44308f5 | 1148 | OPT_BOOLEAN('q', "quiet", &quiet, "don't print any message"), |
d20deb64 | 1149 | OPT_BOOLEAN('s', "stat", &record.opts.inherit_stat, |
649c48a9 | 1150 | "per thread counts"), |
56100321 | 1151 | OPT_BOOLEAN('d', "data", &record.opts.sample_address, "Record the sample addresses"), |
3abebc55 AH |
1152 | OPT_BOOLEAN_SET('T', "timestamp", &record.opts.sample_time, |
1153 | &record.opts.sample_time_set, | |
1154 | "Record the sample timestamps"), | |
56100321 | 1155 | OPT_BOOLEAN('P', "period", &record.opts.period, "Record the sample period"), |
d20deb64 | 1156 | OPT_BOOLEAN('n', "no-samples", &record.opts.no_samples, |
649c48a9 | 1157 | "don't sample"), |
d2db9a98 WN |
1158 | OPT_BOOLEAN_SET('N', "no-buildid-cache", &record.no_buildid_cache, |
1159 | &record.no_buildid_cache_set, | |
1160 | "do not update the buildid cache"), | |
1161 | OPT_BOOLEAN_SET('B', "no-buildid", &record.no_buildid, | |
1162 | &record.no_buildid_set, | |
1163 | "do not collect buildids in perf.data"), | |
d20deb64 | 1164 | OPT_CALLBACK('G', "cgroup", &record.evlist, "name", |
023695d9 SE |
1165 | "monitor event in cgroup name only", |
1166 | parse_cgroups), | |
a6205a35 | 1167 | OPT_UINTEGER('D', "delay", &record.opts.initial_delay, |
6619a53e | 1168 | "ms to wait before starting measurement after program start"), |
bea03405 NK |
1169 | OPT_STRING('u', "uid", &record.opts.target.uid_str, "user", |
1170 | "user to profile"), | |
a5aabdac SE |
1171 | |
1172 | OPT_CALLBACK_NOOPT('b', "branch-any", &record.opts.branch_stack, | |
1173 | "branch any", "sample any taken branches", | |
1174 | parse_branch_stack), | |
1175 | ||
1176 | OPT_CALLBACK('j', "branch-filter", &record.opts.branch_stack, | |
1177 | "branch filter mask", "branch stack filter modes", | |
bdfebd84 | 1178 | parse_branch_stack), |
05484298 AK |
1179 | OPT_BOOLEAN('W', "weight", &record.opts.sample_weight, |
1180 | "sample by weight (on special events only)"), | |
475eeab9 AK |
1181 | OPT_BOOLEAN(0, "transaction", &record.opts.sample_transaction, |
1182 | "sample transaction flags (special events only)"), | |
3aa5939d AH |
1183 | OPT_BOOLEAN(0, "per-thread", &record.opts.target.per_thread, |
1184 | "use per-thread mmaps"), | |
bcc84ec6 SE |
1185 | OPT_CALLBACK_OPTARG('I', "intr-regs", &record.opts.sample_intr_regs, NULL, "any register", |
1186 | "sample selected machine registers on interrupt," | |
1187 | " use -I ? to list register names", parse_regs), | |
85c273d2 AK |
1188 | OPT_BOOLEAN(0, "running-time", &record.opts.running_time, |
1189 | "Record running/enabled time of read (:S) events"), | |
814c8c38 PZ |
1190 | OPT_CALLBACK('k', "clockid", &record.opts, |
1191 | "clockid", "clockid to use for events, see clock_gettime()", | |
1192 | parse_clockid), | |
2dd6d8a1 AH |
1193 | OPT_STRING_OPTARG('S', "snapshot", &record.opts.auxtrace_snapshot_opts, |
1194 | "opts", "AUX area tracing Snapshot Mode", ""), | |
9d9cad76 KL |
1195 | OPT_UINTEGER(0, "proc-map-timeout", &record.opts.proc_map_timeout, |
1196 | "per thread proc mmap processing timeout in ms"), | |
b757bb09 AH |
1197 | OPT_BOOLEAN(0, "switch-events", &record.opts.record_switch_events, |
1198 | "Record context switch events"), | |
85723885 JO |
1199 | OPT_BOOLEAN_FLAG(0, "all-kernel", &record.opts.all_kernel, |
1200 | "Configure all used events to run in kernel space.", | |
1201 | PARSE_OPT_EXCLUSIVE), | |
1202 | OPT_BOOLEAN_FLAG(0, "all-user", &record.opts.all_user, | |
1203 | "Configure all used events to run in user space.", | |
1204 | PARSE_OPT_EXCLUSIVE), | |
71dc2326 WN |
1205 | OPT_STRING(0, "clang-path", &llvm_param.clang_path, "clang path", |
1206 | "clang binary to use for compiling BPF scriptlets"), | |
1207 | OPT_STRING(0, "clang-opt", &llvm_param.clang_opt, "clang options", | |
1208 | "options passed to clang when compiling BPF scriptlets"), | |
7efe0e03 HK |
1209 | OPT_STRING(0, "vmlinux", &symbol_conf.vmlinux_name, |
1210 | "file", "vmlinux pathname"), | |
6156681b NK |
1211 | OPT_BOOLEAN(0, "buildid-all", &record.buildid_all, |
1212 | "Record build-id of all DSOs regardless of hits"), | |
0e9b20b8 IM |
1213 | OPT_END() |
1214 | }; | |
1215 | ||
e5b2c207 NK |
1216 | struct option *record_options = __record_options; |
1217 | ||
1d037ca1 | 1218 | int cmd_record(int argc, const char **argv, const char *prefix __maybe_unused) |
0e9b20b8 | 1219 | { |
ef149c25 | 1220 | int err; |
8c6f45a7 | 1221 | struct record *rec = &record; |
16ad2ffb | 1222 | char errbuf[BUFSIZ]; |
0e9b20b8 | 1223 | |
48e1cab1 WN |
1224 | #ifndef HAVE_LIBBPF_SUPPORT |
1225 | # define set_nobuild(s, l, c) set_option_nobuild(record_options, s, l, "NO_LIBBPF=1", c) | |
1226 | set_nobuild('\0', "clang-path", true); | |
1227 | set_nobuild('\0', "clang-opt", true); | |
1228 | # undef set_nobuild | |
7efe0e03 HK |
1229 | #endif |
1230 | ||
1231 | #ifndef HAVE_BPF_PROLOGUE | |
1232 | # if !defined (HAVE_DWARF_SUPPORT) | |
1233 | # define REASON "NO_DWARF=1" | |
1234 | # elif !defined (HAVE_LIBBPF_SUPPORT) | |
1235 | # define REASON "NO_LIBBPF=1" | |
1236 | # else | |
1237 | # define REASON "this architecture doesn't support BPF prologue" | |
1238 | # endif | |
1239 | # define set_nobuild(s, l, c) set_option_nobuild(record_options, s, l, REASON, c) | |
1240 | set_nobuild('\0', "vmlinux", true); | |
1241 | # undef set_nobuild | |
1242 | # undef REASON | |
48e1cab1 WN |
1243 | #endif |
1244 | ||
3e2be2da ACM |
1245 | rec->evlist = perf_evlist__new(); |
1246 | if (rec->evlist == NULL) | |
361c99a6 ACM |
1247 | return -ENOMEM; |
1248 | ||
eb853e80 JO |
1249 | perf_config(perf_record_config, rec); |
1250 | ||
bca647aa | 1251 | argc = parse_options(argc, argv, record_options, record_usage, |
655000e7 | 1252 | PARSE_OPT_STOP_AT_NON_OPTION); |
602ad878 | 1253 | if (!argc && target__none(&rec->opts.target)) |
bca647aa | 1254 | usage_with_options(record_usage, record_options); |
0e9b20b8 | 1255 | |
bea03405 | 1256 | if (nr_cgroups && !rec->opts.target.system_wide) { |
c7118369 NK |
1257 | usage_with_options_msg(record_usage, record_options, |
1258 | "cgroup monitoring only available in system-wide mode"); | |
1259 | ||
023695d9 | 1260 | } |
b757bb09 AH |
1261 | if (rec->opts.record_switch_events && |
1262 | !perf_can_record_switch_events()) { | |
c7118369 NK |
1263 | ui__error("kernel does not support recording context switch events\n"); |
1264 | parse_options_usage(record_usage, record_options, "switch-events", 0); | |
1265 | return -EINVAL; | |
b757bb09 | 1266 | } |
023695d9 | 1267 | |
ef149c25 AH |
1268 | if (!rec->itr) { |
1269 | rec->itr = auxtrace_record__init(rec->evlist, &err); | |
1270 | if (err) | |
1271 | return err; | |
1272 | } | |
1273 | ||
2dd6d8a1 AH |
1274 | err = auxtrace_parse_snapshot_options(rec->itr, &rec->opts, |
1275 | rec->opts.auxtrace_snapshot_opts); | |
1276 | if (err) | |
1277 | return err; | |
1278 | ||
d7888573 WN |
1279 | err = bpf__setup_stdout(rec->evlist); |
1280 | if (err) { | |
1281 | bpf__strerror_setup_stdout(rec->evlist, err, errbuf, sizeof(errbuf)); | |
1282 | pr_err("ERROR: Setup BPF stdout failed: %s\n", | |
1283 | errbuf); | |
1284 | return err; | |
1285 | } | |
1286 | ||
ef149c25 AH |
1287 | err = -ENOMEM; |
1288 | ||
0a7e6d1b | 1289 | symbol__init(NULL); |
baa2f6ce | 1290 | |
ec80fde7 | 1291 | if (symbol_conf.kptr_restrict) |
646aaea6 ACM |
1292 | pr_warning( |
1293 | "WARNING: Kernel address maps (/proc/{kallsyms,modules}) are restricted,\n" | |
1294 | "check /proc/sys/kernel/kptr_restrict.\n\n" | |
1295 | "Samples in kernel functions may not be resolved if a suitable vmlinux\n" | |
1296 | "file is not found in the buildid cache or in the vmlinux path.\n\n" | |
1297 | "Samples in kernel modules won't be resolved at all.\n\n" | |
1298 | "If some relocation was applied (e.g. kexec) symbols may be misresolved\n" | |
1299 | "even with a suitable vmlinux or kallsyms file.\n\n"); | |
ec80fde7 | 1300 | |
d20deb64 | 1301 | if (rec->no_buildid_cache || rec->no_buildid) |
a1ac1d3c | 1302 | disable_buildid_cache(); |
655000e7 | 1303 | |
3e2be2da ACM |
1304 | if (rec->evlist->nr_entries == 0 && |
1305 | perf_evlist__add_default(rec->evlist) < 0) { | |
69aad6f1 ACM |
1306 | pr_err("Not enough memory for event selector list\n"); |
1307 | goto out_symbol_exit; | |
bbd36e5e | 1308 | } |
0e9b20b8 | 1309 | |
69e7e5b0 AH |
1310 | if (rec->opts.target.tid && !rec->opts.no_inherit_set) |
1311 | rec->opts.no_inherit = true; | |
1312 | ||
602ad878 | 1313 | err = target__validate(&rec->opts.target); |
16ad2ffb | 1314 | if (err) { |
602ad878 | 1315 | target__strerror(&rec->opts.target, err, errbuf, BUFSIZ); |
16ad2ffb NK |
1316 | ui__warning("%s", errbuf); |
1317 | } | |
1318 | ||
602ad878 | 1319 | err = target__parse_uid(&rec->opts.target); |
16ad2ffb NK |
1320 | if (err) { |
1321 | int saved_errno = errno; | |
4bd0f2d2 | 1322 | |
602ad878 | 1323 | target__strerror(&rec->opts.target, err, errbuf, BUFSIZ); |
3780f488 | 1324 | ui__error("%s", errbuf); |
16ad2ffb NK |
1325 | |
1326 | err = -saved_errno; | |
8fa60e1f | 1327 | goto out_symbol_exit; |
16ad2ffb | 1328 | } |
0d37aa34 | 1329 | |
16ad2ffb | 1330 | err = -ENOMEM; |
3e2be2da | 1331 | if (perf_evlist__create_maps(rec->evlist, &rec->opts.target) < 0) |
dd7927f4 | 1332 | usage_with_options(record_usage, record_options); |
69aad6f1 | 1333 | |
ef149c25 AH |
1334 | err = auxtrace_record__options(rec->itr, rec->evlist, &rec->opts); |
1335 | if (err) | |
1336 | goto out_symbol_exit; | |
1337 | ||
6156681b NK |
1338 | /* |
1339 | * We take all buildids when the file contains | |
1340 | * AUX area tracing data because we do not decode the | |
1341 | * trace because it would take too long. | |
1342 | */ | |
1343 | if (rec->opts.full_auxtrace) | |
1344 | rec->buildid_all = true; | |
1345 | ||
b4006796 | 1346 | if (record_opts__config(&rec->opts)) { |
39d17dac | 1347 | err = -EINVAL; |
03ad9747 | 1348 | goto out_symbol_exit; |
7e4ff9e3 MG |
1349 | } |
1350 | ||
d20deb64 | 1351 | err = __cmd_record(&record, argc, argv); |
d65a458b | 1352 | out_symbol_exit: |
45604710 | 1353 | perf_evlist__delete(rec->evlist); |
d65a458b | 1354 | symbol__exit(); |
ef149c25 | 1355 | auxtrace_record__free(rec->itr); |
39d17dac | 1356 | return err; |
0e9b20b8 | 1357 | } |
2dd6d8a1 AH |
1358 | |
1359 | static void snapshot_sig_handler(int sig __maybe_unused) | |
1360 | { | |
1361 | if (!auxtrace_snapshot_enabled) | |
1362 | return; | |
1363 | auxtrace_snapshot_enabled = 0; | |
1364 | auxtrace_snapshot_err = auxtrace_record__snapshot_start(record.itr); | |
1365 | auxtrace_record__snapshot_started = 1; | |
1366 | } |