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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
abaff32a | 2 | /* |
bf9e1876 IM |
3 | * builtin-record.c |
4 | * | |
5 | * Builtin record command: Record the profile of a workload | |
6 | * (or a CPU, or a PID) into the perf.data output file - for | |
7 | * later analysis via perf report. | |
abaff32a | 8 | */ |
16f762a2 | 9 | #include "builtin.h" |
bf9e1876 | 10 | |
6122e4e4 | 11 | #include "util/build-id.h" |
4b6ab94e | 12 | #include <subcmd/parse-options.h> |
8ad8db37 | 13 | #include "util/parse-events.h" |
41840d21 | 14 | #include "util/config.h" |
6eda5838 | 15 | |
8f651eae | 16 | #include "util/callchain.h" |
f14d5707 | 17 | #include "util/cgroup.h" |
7c6a1c65 | 18 | #include "util/header.h" |
66e274f3 | 19 | #include "util/event.h" |
361c99a6 | 20 | #include "util/evlist.h" |
69aad6f1 | 21 | #include "util/evsel.h" |
8f28827a | 22 | #include "util/debug.h" |
aeb00b1a | 23 | #include "util/target.h" |
94c744b6 | 24 | #include "util/session.h" |
45694aa7 | 25 | #include "util/tool.h" |
8d06367f | 26 | #include "util/symbol.h" |
aeb00b1a | 27 | #include "util/record.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" |
a074865e | 39 | #include "util/perf-hooks.h" |
f13de660 | 40 | #include "util/cpu-set-sched.h" |
ea49e01c | 41 | #include "util/synthetic-events.h" |
c5e4027e | 42 | #include "util/time-utils.h" |
58db1d6e | 43 | #include "util/units.h" |
7b612e29 | 44 | #include "util/bpf-event.h" |
d8871ea7 | 45 | #include "asm/bug.h" |
c1a604df | 46 | #include "perf.h" |
7c6a1c65 | 47 | |
a43783ae | 48 | #include <errno.h> |
fd20e811 | 49 | #include <inttypes.h> |
67230479 | 50 | #include <locale.h> |
4208735d | 51 | #include <poll.h> |
97124d5e | 52 | #include <unistd.h> |
de9ac07b | 53 | #include <sched.h> |
9607ad3a | 54 | #include <signal.h> |
a41794cd | 55 | #include <sys/mman.h> |
4208735d | 56 | #include <sys/wait.h> |
8520a98d | 57 | #include <linux/string.h> |
0693e680 | 58 | #include <linux/time64.h> |
d8f9da24 | 59 | #include <linux/zalloc.h> |
78da39fa | 60 | |
1b43b704 | 61 | struct switch_output { |
dc0c6127 | 62 | bool enabled; |
1b43b704 | 63 | bool signal; |
dc0c6127 | 64 | unsigned long size; |
bfacbe3b | 65 | unsigned long time; |
cb4e1ebb JO |
66 | const char *str; |
67 | bool set; | |
03724b2e AK |
68 | char **filenames; |
69 | int num_files; | |
70 | int cur_file; | |
1b43b704 JO |
71 | }; |
72 | ||
8c6f45a7 | 73 | struct record { |
45694aa7 | 74 | struct perf_tool tool; |
b4006796 | 75 | struct record_opts opts; |
d20deb64 | 76 | u64 bytes_written; |
8ceb41d7 | 77 | struct perf_data data; |
ef149c25 | 78 | struct auxtrace_record *itr; |
63503dba | 79 | struct evlist *evlist; |
d20deb64 | 80 | struct perf_session *session; |
d20deb64 | 81 | int realtime_prio; |
d20deb64 | 82 | bool no_buildid; |
d2db9a98 | 83 | bool no_buildid_set; |
d20deb64 | 84 | bool no_buildid_cache; |
d2db9a98 | 85 | bool no_buildid_cache_set; |
6156681b | 86 | bool buildid_all; |
ecfd7a9c | 87 | bool timestamp_filename; |
68588baf | 88 | bool timestamp_boundary; |
1b43b704 | 89 | struct switch_output switch_output; |
9f065194 | 90 | unsigned long long samples; |
9d2ed645 | 91 | cpu_set_t affinity_mask; |
0f82ebc4 | 92 | }; |
a21ca2ca | 93 | |
dc0c6127 JO |
94 | static volatile int auxtrace_record__snapshot_started; |
95 | static DEFINE_TRIGGER(auxtrace_snapshot_trigger); | |
96 | static DEFINE_TRIGGER(switch_output_trigger); | |
97 | ||
9d2ed645 AB |
98 | static const char *affinity_tags[PERF_AFFINITY_MAX] = { |
99 | "SYS", "NODE", "CPU" | |
100 | }; | |
101 | ||
dc0c6127 JO |
102 | static bool switch_output_signal(struct record *rec) |
103 | { | |
104 | return rec->switch_output.signal && | |
105 | trigger_is_ready(&switch_output_trigger); | |
106 | } | |
107 | ||
108 | static bool switch_output_size(struct record *rec) | |
109 | { | |
110 | return rec->switch_output.size && | |
111 | trigger_is_ready(&switch_output_trigger) && | |
112 | (rec->bytes_written >= rec->switch_output.size); | |
113 | } | |
114 | ||
bfacbe3b JO |
115 | static bool switch_output_time(struct record *rec) |
116 | { | |
117 | return rec->switch_output.time && | |
118 | trigger_is_ready(&switch_output_trigger); | |
119 | } | |
120 | ||
ded2b8fe JO |
121 | static int record__write(struct record *rec, struct perf_mmap *map __maybe_unused, |
122 | void *bf, size_t size) | |
f5970550 | 123 | { |
ded2b8fe JO |
124 | struct perf_data_file *file = &rec->session->data->file; |
125 | ||
126 | if (perf_data_file__write(file, bf, size) < 0) { | |
50a9b868 JO |
127 | pr_err("failed to write perf data, error: %m\n"); |
128 | return -1; | |
f5970550 | 129 | } |
8d3eca20 | 130 | |
cf8b2e69 | 131 | rec->bytes_written += size; |
dc0c6127 JO |
132 | |
133 | if (switch_output_size(rec)) | |
134 | trigger_hit(&switch_output_trigger); | |
135 | ||
8d3eca20 | 136 | return 0; |
f5970550 PZ |
137 | } |
138 | ||
ef781128 AB |
139 | static int record__aio_enabled(struct record *rec); |
140 | static int record__comp_enabled(struct record *rec); | |
5d7f4116 AB |
141 | static size_t zstd_compress(struct perf_session *session, void *dst, size_t dst_size, |
142 | void *src, size_t src_size); | |
143 | ||
d3d1af6f AB |
144 | #ifdef HAVE_AIO_SUPPORT |
145 | static int record__aio_write(struct aiocb *cblock, int trace_fd, | |
146 | void *buf, size_t size, off_t off) | |
147 | { | |
148 | int rc; | |
149 | ||
150 | cblock->aio_fildes = trace_fd; | |
151 | cblock->aio_buf = buf; | |
152 | cblock->aio_nbytes = size; | |
153 | cblock->aio_offset = off; | |
154 | cblock->aio_sigevent.sigev_notify = SIGEV_NONE; | |
155 | ||
156 | do { | |
157 | rc = aio_write(cblock); | |
158 | if (rc == 0) { | |
159 | break; | |
160 | } else if (errno != EAGAIN) { | |
161 | cblock->aio_fildes = -1; | |
162 | pr_err("failed to queue perf data, error: %m\n"); | |
163 | break; | |
164 | } | |
165 | } while (1); | |
166 | ||
167 | return rc; | |
168 | } | |
169 | ||
170 | static int record__aio_complete(struct perf_mmap *md, struct aiocb *cblock) | |
171 | { | |
172 | void *rem_buf; | |
173 | off_t rem_off; | |
174 | size_t rem_size; | |
175 | int rc, aio_errno; | |
176 | ssize_t aio_ret, written; | |
177 | ||
178 | aio_errno = aio_error(cblock); | |
179 | if (aio_errno == EINPROGRESS) | |
180 | return 0; | |
181 | ||
182 | written = aio_ret = aio_return(cblock); | |
183 | if (aio_ret < 0) { | |
184 | if (aio_errno != EINTR) | |
185 | pr_err("failed to write perf data, error: %m\n"); | |
186 | written = 0; | |
187 | } | |
188 | ||
189 | rem_size = cblock->aio_nbytes - written; | |
190 | ||
191 | if (rem_size == 0) { | |
192 | cblock->aio_fildes = -1; | |
193 | /* | |
ef781128 AB |
194 | * md->refcount is incremented in record__aio_pushfn() for |
195 | * every aio write request started in record__aio_push() so | |
196 | * decrement it because the request is now complete. | |
d3d1af6f AB |
197 | */ |
198 | perf_mmap__put(md); | |
199 | rc = 1; | |
200 | } else { | |
201 | /* | |
202 | * aio write request may require restart with the | |
203 | * reminder if the kernel didn't write whole | |
204 | * chunk at once. | |
205 | */ | |
206 | rem_off = cblock->aio_offset + written; | |
207 | rem_buf = (void *)(cblock->aio_buf + written); | |
208 | record__aio_write(cblock, cblock->aio_fildes, | |
209 | rem_buf, rem_size, rem_off); | |
210 | rc = 0; | |
211 | } | |
212 | ||
213 | return rc; | |
214 | } | |
215 | ||
93f20c0f | 216 | static int record__aio_sync(struct perf_mmap *md, bool sync_all) |
d3d1af6f | 217 | { |
93f20c0f AB |
218 | struct aiocb **aiocb = md->aio.aiocb; |
219 | struct aiocb *cblocks = md->aio.cblocks; | |
d3d1af6f | 220 | struct timespec timeout = { 0, 1000 * 1000 * 1 }; /* 1ms */ |
93f20c0f | 221 | int i, do_suspend; |
d3d1af6f AB |
222 | |
223 | do { | |
93f20c0f AB |
224 | do_suspend = 0; |
225 | for (i = 0; i < md->aio.nr_cblocks; ++i) { | |
226 | if (cblocks[i].aio_fildes == -1 || record__aio_complete(md, &cblocks[i])) { | |
227 | if (sync_all) | |
228 | aiocb[i] = NULL; | |
229 | else | |
230 | return i; | |
231 | } else { | |
232 | /* | |
233 | * Started aio write is not complete yet | |
234 | * so it has to be waited before the | |
235 | * next allocation. | |
236 | */ | |
237 | aiocb[i] = &cblocks[i]; | |
238 | do_suspend = 1; | |
239 | } | |
240 | } | |
241 | if (!do_suspend) | |
242 | return -1; | |
d3d1af6f | 243 | |
93f20c0f | 244 | while (aio_suspend((const struct aiocb **)aiocb, md->aio.nr_cblocks, &timeout)) { |
d3d1af6f AB |
245 | if (!(errno == EAGAIN || errno == EINTR)) |
246 | pr_err("failed to sync perf data, error: %m\n"); | |
247 | } | |
248 | } while (1); | |
249 | } | |
250 | ||
ef781128 AB |
251 | struct record_aio { |
252 | struct record *rec; | |
253 | void *data; | |
254 | size_t size; | |
255 | }; | |
256 | ||
257 | static int record__aio_pushfn(struct perf_mmap *map, void *to, void *buf, size_t size) | |
d3d1af6f | 258 | { |
ef781128 | 259 | struct record_aio *aio = to; |
d3d1af6f | 260 | |
ef781128 AB |
261 | /* |
262 | * map->base data pointed by buf is copied into free map->aio.data[] buffer | |
263 | * to release space in the kernel buffer as fast as possible, calling | |
264 | * perf_mmap__consume() from perf_mmap__push() function. | |
265 | * | |
266 | * That lets the kernel to proceed with storing more profiling data into | |
267 | * the kernel buffer earlier than other per-cpu kernel buffers are handled. | |
268 | * | |
269 | * Coping can be done in two steps in case the chunk of profiling data | |
270 | * crosses the upper bound of the kernel buffer. In this case we first move | |
271 | * part of data from map->start till the upper bound and then the reminder | |
272 | * from the beginning of the kernel buffer till the end of the data chunk. | |
273 | */ | |
274 | ||
275 | if (record__comp_enabled(aio->rec)) { | |
276 | size = zstd_compress(aio->rec->session, aio->data + aio->size, | |
277 | perf_mmap__mmap_len(map) - aio->size, | |
278 | buf, size); | |
279 | } else { | |
280 | memcpy(aio->data + aio->size, buf, size); | |
281 | } | |
282 | ||
283 | if (!aio->size) { | |
284 | /* | |
285 | * Increment map->refcount to guard map->aio.data[] buffer | |
286 | * from premature deallocation because map object can be | |
287 | * released earlier than aio write request started on | |
288 | * map->aio.data[] buffer is complete. | |
289 | * | |
290 | * perf_mmap__put() is done at record__aio_complete() | |
291 | * after started aio request completion or at record__aio_push() | |
292 | * if the request failed to start. | |
293 | */ | |
294 | perf_mmap__get(map); | |
295 | } | |
296 | ||
297 | aio->size += size; | |
298 | ||
299 | return size; | |
300 | } | |
301 | ||
302 | static int record__aio_push(struct record *rec, struct perf_mmap *map, off_t *off) | |
303 | { | |
304 | int ret, idx; | |
305 | int trace_fd = rec->session->data->file.fd; | |
306 | struct record_aio aio = { .rec = rec, .size = 0 }; | |
d3d1af6f | 307 | |
ef781128 AB |
308 | /* |
309 | * Call record__aio_sync() to wait till map->aio.data[] buffer | |
310 | * becomes available after previous aio write operation. | |
311 | */ | |
312 | ||
313 | idx = record__aio_sync(map, false); | |
314 | aio.data = map->aio.data[idx]; | |
315 | ret = perf_mmap__push(map, &aio, record__aio_pushfn); | |
316 | if (ret != 0) /* ret > 0 - no data, ret < 0 - error */ | |
317 | return ret; | |
318 | ||
319 | rec->samples++; | |
320 | ret = record__aio_write(&(map->aio.cblocks[idx]), trace_fd, aio.data, aio.size, *off); | |
d3d1af6f | 321 | if (!ret) { |
ef781128 AB |
322 | *off += aio.size; |
323 | rec->bytes_written += aio.size; | |
d3d1af6f AB |
324 | if (switch_output_size(rec)) |
325 | trigger_hit(&switch_output_trigger); | |
ef781128 AB |
326 | } else { |
327 | /* | |
328 | * Decrement map->refcount incremented in record__aio_pushfn() | |
329 | * back if record__aio_write() operation failed to start, otherwise | |
330 | * map->refcount is decremented in record__aio_complete() after | |
331 | * aio write operation finishes successfully. | |
332 | */ | |
333 | perf_mmap__put(map); | |
d3d1af6f AB |
334 | } |
335 | ||
336 | return ret; | |
337 | } | |
338 | ||
339 | static off_t record__aio_get_pos(int trace_fd) | |
340 | { | |
341 | return lseek(trace_fd, 0, SEEK_CUR); | |
342 | } | |
343 | ||
344 | static void record__aio_set_pos(int trace_fd, off_t pos) | |
345 | { | |
346 | lseek(trace_fd, pos, SEEK_SET); | |
347 | } | |
348 | ||
349 | static void record__aio_mmap_read_sync(struct record *rec) | |
350 | { | |
351 | int i; | |
63503dba | 352 | struct evlist *evlist = rec->evlist; |
d3d1af6f AB |
353 | struct perf_mmap *maps = evlist->mmap; |
354 | ||
ef781128 | 355 | if (!record__aio_enabled(rec)) |
d3d1af6f AB |
356 | return; |
357 | ||
358 | for (i = 0; i < evlist->nr_mmaps; i++) { | |
359 | struct perf_mmap *map = &maps[i]; | |
360 | ||
361 | if (map->base) | |
93f20c0f | 362 | record__aio_sync(map, true); |
d3d1af6f AB |
363 | } |
364 | } | |
365 | ||
366 | static int nr_cblocks_default = 1; | |
93f20c0f | 367 | static int nr_cblocks_max = 4; |
d3d1af6f AB |
368 | |
369 | static int record__aio_parse(const struct option *opt, | |
93f20c0f | 370 | const char *str, |
d3d1af6f AB |
371 | int unset) |
372 | { | |
373 | struct record_opts *opts = (struct record_opts *)opt->value; | |
374 | ||
93f20c0f | 375 | if (unset) { |
d3d1af6f | 376 | opts->nr_cblocks = 0; |
93f20c0f AB |
377 | } else { |
378 | if (str) | |
379 | opts->nr_cblocks = strtol(str, NULL, 0); | |
380 | if (!opts->nr_cblocks) | |
381 | opts->nr_cblocks = nr_cblocks_default; | |
382 | } | |
d3d1af6f AB |
383 | |
384 | return 0; | |
385 | } | |
386 | #else /* HAVE_AIO_SUPPORT */ | |
93f20c0f AB |
387 | static int nr_cblocks_max = 0; |
388 | ||
ef781128 AB |
389 | static int record__aio_push(struct record *rec __maybe_unused, struct perf_mmap *map __maybe_unused, |
390 | off_t *off __maybe_unused) | |
d3d1af6f AB |
391 | { |
392 | return -1; | |
393 | } | |
394 | ||
395 | static off_t record__aio_get_pos(int trace_fd __maybe_unused) | |
396 | { | |
397 | return -1; | |
398 | } | |
399 | ||
400 | static void record__aio_set_pos(int trace_fd __maybe_unused, off_t pos __maybe_unused) | |
401 | { | |
402 | } | |
403 | ||
404 | static void record__aio_mmap_read_sync(struct record *rec __maybe_unused) | |
405 | { | |
406 | } | |
407 | #endif | |
408 | ||
409 | static int record__aio_enabled(struct record *rec) | |
410 | { | |
411 | return rec->opts.nr_cblocks > 0; | |
412 | } | |
413 | ||
470530bb AB |
414 | #define MMAP_FLUSH_DEFAULT 1 |
415 | static int record__mmap_flush_parse(const struct option *opt, | |
416 | const char *str, | |
417 | int unset) | |
418 | { | |
419 | int flush_max; | |
420 | struct record_opts *opts = (struct record_opts *)opt->value; | |
421 | static struct parse_tag tags[] = { | |
422 | { .tag = 'B', .mult = 1 }, | |
423 | { .tag = 'K', .mult = 1 << 10 }, | |
424 | { .tag = 'M', .mult = 1 << 20 }, | |
425 | { .tag = 'G', .mult = 1 << 30 }, | |
426 | { .tag = 0 }, | |
427 | }; | |
428 | ||
429 | if (unset) | |
430 | return 0; | |
431 | ||
432 | if (str) { | |
433 | opts->mmap_flush = parse_tag_value(str, tags); | |
434 | if (opts->mmap_flush == (int)-1) | |
435 | opts->mmap_flush = strtol(str, NULL, 0); | |
436 | } | |
437 | ||
438 | if (!opts->mmap_flush) | |
439 | opts->mmap_flush = MMAP_FLUSH_DEFAULT; | |
440 | ||
441 | flush_max = perf_evlist__mmap_size(opts->mmap_pages); | |
442 | flush_max /= 4; | |
443 | if (opts->mmap_flush > flush_max) | |
444 | opts->mmap_flush = flush_max; | |
445 | ||
446 | return 0; | |
447 | } | |
448 | ||
504c1ad1 AB |
449 | #ifdef HAVE_ZSTD_SUPPORT |
450 | static unsigned int comp_level_default = 1; | |
451 | ||
452 | static int record__parse_comp_level(const struct option *opt, const char *str, int unset) | |
453 | { | |
454 | struct record_opts *opts = opt->value; | |
455 | ||
456 | if (unset) { | |
457 | opts->comp_level = 0; | |
458 | } else { | |
459 | if (str) | |
460 | opts->comp_level = strtol(str, NULL, 0); | |
461 | if (!opts->comp_level) | |
462 | opts->comp_level = comp_level_default; | |
463 | } | |
464 | ||
465 | return 0; | |
466 | } | |
467 | #endif | |
51255a8a AB |
468 | static unsigned int comp_level_max = 22; |
469 | ||
42e1fd80 AB |
470 | static int record__comp_enabled(struct record *rec) |
471 | { | |
472 | return rec->opts.comp_level > 0; | |
473 | } | |
474 | ||
45694aa7 | 475 | static int process_synthesized_event(struct perf_tool *tool, |
d20deb64 | 476 | union perf_event *event, |
1d037ca1 IT |
477 | struct perf_sample *sample __maybe_unused, |
478 | struct machine *machine __maybe_unused) | |
234fbbf5 | 479 | { |
8c6f45a7 | 480 | struct record *rec = container_of(tool, struct record, tool); |
ded2b8fe | 481 | return record__write(rec, NULL, event, event->header.size); |
234fbbf5 ACM |
482 | } |
483 | ||
ded2b8fe | 484 | static int record__pushfn(struct perf_mmap *map, void *to, void *bf, size_t size) |
d37f1586 ACM |
485 | { |
486 | struct record *rec = to; | |
487 | ||
5d7f4116 AB |
488 | if (record__comp_enabled(rec)) { |
489 | size = zstd_compress(rec->session, map->data, perf_mmap__mmap_len(map), bf, size); | |
490 | bf = map->data; | |
491 | } | |
492 | ||
d37f1586 | 493 | rec->samples++; |
ded2b8fe | 494 | return record__write(rec, map, bf, size); |
d37f1586 ACM |
495 | } |
496 | ||
2dd6d8a1 AH |
497 | static volatile int done; |
498 | static volatile int signr = -1; | |
499 | static volatile int child_finished; | |
c0bdc1c4 | 500 | |
2dd6d8a1 AH |
501 | static void sig_handler(int sig) |
502 | { | |
503 | if (sig == SIGCHLD) | |
504 | child_finished = 1; | |
505 | else | |
506 | signr = sig; | |
507 | ||
508 | done = 1; | |
509 | } | |
510 | ||
a074865e WN |
511 | static void sigsegv_handler(int sig) |
512 | { | |
513 | perf_hooks__recover(); | |
514 | sighandler_dump_stack(sig); | |
515 | } | |
516 | ||
2dd6d8a1 AH |
517 | static void record__sig_exit(void) |
518 | { | |
519 | if (signr == -1) | |
520 | return; | |
521 | ||
522 | signal(signr, SIG_DFL); | |
523 | raise(signr); | |
524 | } | |
525 | ||
e31f0d01 AH |
526 | #ifdef HAVE_AUXTRACE_SUPPORT |
527 | ||
ef149c25 | 528 | static int record__process_auxtrace(struct perf_tool *tool, |
ded2b8fe | 529 | struct perf_mmap *map, |
ef149c25 AH |
530 | union perf_event *event, void *data1, |
531 | size_t len1, void *data2, size_t len2) | |
532 | { | |
533 | struct record *rec = container_of(tool, struct record, tool); | |
8ceb41d7 | 534 | struct perf_data *data = &rec->data; |
ef149c25 AH |
535 | size_t padding; |
536 | u8 pad[8] = {0}; | |
537 | ||
cd3dd8dd | 538 | if (!perf_data__is_pipe(data) && !perf_data__is_dir(data)) { |
99fa2984 | 539 | off_t file_offset; |
8ceb41d7 | 540 | int fd = perf_data__fd(data); |
99fa2984 AH |
541 | int err; |
542 | ||
543 | file_offset = lseek(fd, 0, SEEK_CUR); | |
544 | if (file_offset == -1) | |
545 | return -1; | |
546 | err = auxtrace_index__auxtrace_event(&rec->session->auxtrace_index, | |
547 | event, file_offset); | |
548 | if (err) | |
549 | return err; | |
550 | } | |
551 | ||
ef149c25 AH |
552 | /* event.auxtrace.size includes padding, see __auxtrace_mmap__read() */ |
553 | padding = (len1 + len2) & 7; | |
554 | if (padding) | |
555 | padding = 8 - padding; | |
556 | ||
ded2b8fe JO |
557 | record__write(rec, map, event, event->header.size); |
558 | record__write(rec, map, data1, len1); | |
ef149c25 | 559 | if (len2) |
ded2b8fe JO |
560 | record__write(rec, map, data2, len2); |
561 | record__write(rec, map, &pad, padding); | |
ef149c25 AH |
562 | |
563 | return 0; | |
564 | } | |
565 | ||
566 | static int record__auxtrace_mmap_read(struct record *rec, | |
e035f4ca | 567 | struct perf_mmap *map) |
ef149c25 AH |
568 | { |
569 | int ret; | |
570 | ||
e035f4ca | 571 | ret = auxtrace_mmap__read(map, rec->itr, &rec->tool, |
ef149c25 AH |
572 | record__process_auxtrace); |
573 | if (ret < 0) | |
574 | return ret; | |
575 | ||
576 | if (ret) | |
577 | rec->samples++; | |
578 | ||
579 | return 0; | |
580 | } | |
581 | ||
2dd6d8a1 | 582 | static int record__auxtrace_mmap_read_snapshot(struct record *rec, |
e035f4ca | 583 | struct perf_mmap *map) |
2dd6d8a1 AH |
584 | { |
585 | int ret; | |
586 | ||
e035f4ca | 587 | ret = auxtrace_mmap__read_snapshot(map, rec->itr, &rec->tool, |
2dd6d8a1 AH |
588 | record__process_auxtrace, |
589 | rec->opts.auxtrace_snapshot_size); | |
590 | if (ret < 0) | |
591 | return ret; | |
592 | ||
593 | if (ret) | |
594 | rec->samples++; | |
595 | ||
596 | return 0; | |
597 | } | |
598 | ||
599 | static int record__auxtrace_read_snapshot_all(struct record *rec) | |
600 | { | |
601 | int i; | |
602 | int rc = 0; | |
603 | ||
604 | for (i = 0; i < rec->evlist->nr_mmaps; i++) { | |
e035f4ca | 605 | struct perf_mmap *map = &rec->evlist->mmap[i]; |
2dd6d8a1 | 606 | |
e035f4ca | 607 | if (!map->auxtrace_mmap.base) |
2dd6d8a1 AH |
608 | continue; |
609 | ||
e035f4ca | 610 | if (record__auxtrace_mmap_read_snapshot(rec, map) != 0) { |
2dd6d8a1 AH |
611 | rc = -1; |
612 | goto out; | |
613 | } | |
614 | } | |
615 | out: | |
616 | return rc; | |
617 | } | |
618 | ||
ce7b0e42 | 619 | static void record__read_auxtrace_snapshot(struct record *rec, bool on_exit) |
2dd6d8a1 AH |
620 | { |
621 | pr_debug("Recording AUX area tracing snapshot\n"); | |
622 | if (record__auxtrace_read_snapshot_all(rec) < 0) { | |
5f9cf599 | 623 | trigger_error(&auxtrace_snapshot_trigger); |
2dd6d8a1 | 624 | } else { |
ce7b0e42 | 625 | if (auxtrace_record__snapshot_finish(rec->itr, on_exit)) |
5f9cf599 WN |
626 | trigger_error(&auxtrace_snapshot_trigger); |
627 | else | |
628 | trigger_ready(&auxtrace_snapshot_trigger); | |
2dd6d8a1 AH |
629 | } |
630 | } | |
631 | ||
ce7b0e42 AS |
632 | static int record__auxtrace_snapshot_exit(struct record *rec) |
633 | { | |
634 | if (trigger_is_error(&auxtrace_snapshot_trigger)) | |
635 | return 0; | |
636 | ||
637 | if (!auxtrace_record__snapshot_started && | |
638 | auxtrace_record__snapshot_start(rec->itr)) | |
639 | return -1; | |
640 | ||
641 | record__read_auxtrace_snapshot(rec, true); | |
642 | if (trigger_is_error(&auxtrace_snapshot_trigger)) | |
643 | return -1; | |
644 | ||
645 | return 0; | |
646 | } | |
647 | ||
4b5ea3bd AH |
648 | static int record__auxtrace_init(struct record *rec) |
649 | { | |
650 | int err; | |
651 | ||
652 | if (!rec->itr) { | |
653 | rec->itr = auxtrace_record__init(rec->evlist, &err); | |
654 | if (err) | |
655 | return err; | |
656 | } | |
657 | ||
658 | err = auxtrace_parse_snapshot_options(rec->itr, &rec->opts, | |
659 | rec->opts.auxtrace_snapshot_opts); | |
660 | if (err) | |
661 | return err; | |
662 | ||
663 | return auxtrace_parse_filters(rec->evlist); | |
664 | } | |
665 | ||
e31f0d01 AH |
666 | #else |
667 | ||
668 | static inline | |
669 | int record__auxtrace_mmap_read(struct record *rec __maybe_unused, | |
e035f4ca | 670 | struct perf_mmap *map __maybe_unused) |
e31f0d01 AH |
671 | { |
672 | return 0; | |
673 | } | |
674 | ||
2dd6d8a1 | 675 | static inline |
ce7b0e42 AS |
676 | void record__read_auxtrace_snapshot(struct record *rec __maybe_unused, |
677 | bool on_exit __maybe_unused) | |
de9ac07b | 678 | { |
f7b7c26e PZ |
679 | } |
680 | ||
2dd6d8a1 AH |
681 | static inline |
682 | int auxtrace_record__snapshot_start(struct auxtrace_record *itr __maybe_unused) | |
f7b7c26e | 683 | { |
2dd6d8a1 | 684 | return 0; |
de9ac07b PZ |
685 | } |
686 | ||
ce7b0e42 AS |
687 | static inline |
688 | int record__auxtrace_snapshot_exit(struct record *rec __maybe_unused) | |
689 | { | |
690 | return 0; | |
691 | } | |
692 | ||
4b5ea3bd AH |
693 | static int record__auxtrace_init(struct record *rec __maybe_unused) |
694 | { | |
695 | return 0; | |
696 | } | |
697 | ||
2dd6d8a1 AH |
698 | #endif |
699 | ||
cda57a8c | 700 | static int record__mmap_evlist(struct record *rec, |
63503dba | 701 | struct evlist *evlist) |
cda57a8c WN |
702 | { |
703 | struct record_opts *opts = &rec->opts; | |
704 | char msg[512]; | |
705 | ||
f13de660 AB |
706 | if (opts->affinity != PERF_AFFINITY_SYS) |
707 | cpu__setup_cpunode_map(); | |
708 | ||
7a276ff6 | 709 | if (perf_evlist__mmap_ex(evlist, opts->mmap_pages, |
cda57a8c | 710 | opts->auxtrace_mmap_pages, |
9d2ed645 | 711 | opts->auxtrace_snapshot_mode, |
470530bb | 712 | opts->nr_cblocks, opts->affinity, |
51255a8a | 713 | opts->mmap_flush, opts->comp_level) < 0) { |
cda57a8c WN |
714 | if (errno == EPERM) { |
715 | pr_err("Permission error mapping pages.\n" | |
716 | "Consider increasing " | |
717 | "/proc/sys/kernel/perf_event_mlock_kb,\n" | |
718 | "or try again with a smaller value of -m/--mmap_pages.\n" | |
719 | "(current value: %u,%u)\n", | |
720 | opts->mmap_pages, opts->auxtrace_mmap_pages); | |
721 | return -errno; | |
722 | } else { | |
723 | pr_err("failed to mmap with %d (%s)\n", errno, | |
c8b5f2c9 | 724 | str_error_r(errno, msg, sizeof(msg))); |
cda57a8c WN |
725 | if (errno) |
726 | return -errno; | |
727 | else | |
728 | return -EINVAL; | |
729 | } | |
730 | } | |
731 | return 0; | |
732 | } | |
733 | ||
734 | static int record__mmap(struct record *rec) | |
735 | { | |
736 | return record__mmap_evlist(rec, rec->evlist); | |
737 | } | |
738 | ||
8c6f45a7 | 739 | static int record__open(struct record *rec) |
dd7927f4 | 740 | { |
d6195a6a | 741 | char msg[BUFSIZ]; |
32dcd021 | 742 | struct evsel *pos; |
63503dba | 743 | struct evlist *evlist = rec->evlist; |
d20deb64 | 744 | struct perf_session *session = rec->session; |
b4006796 | 745 | struct record_opts *opts = &rec->opts; |
8d3eca20 | 746 | int rc = 0; |
dd7927f4 | 747 | |
d3dbf43c ACM |
748 | /* |
749 | * For initial_delay we need to add a dummy event so that we can track | |
750 | * PERF_RECORD_MMAP while we wait for the initial delay to enable the | |
751 | * real events, the ones asked by the user. | |
752 | */ | |
753 | if (opts->initial_delay) { | |
754 | if (perf_evlist__add_dummy(evlist)) | |
755 | return -ENOMEM; | |
756 | ||
757 | pos = perf_evlist__first(evlist); | |
758 | pos->tracking = 0; | |
759 | pos = perf_evlist__last(evlist); | |
760 | pos->tracking = 1; | |
1fc632ce | 761 | pos->core.attr.enable_on_exec = 1; |
d3dbf43c ACM |
762 | } |
763 | ||
e68ae9cf | 764 | perf_evlist__config(evlist, opts, &callchain_param); |
cac21425 | 765 | |
e5cadb93 | 766 | evlist__for_each_entry(evlist, pos) { |
dd7927f4 | 767 | try_again: |
af663bd0 | 768 | if (evsel__open(pos, pos->core.cpus, pos->core.threads) < 0) { |
56e52e85 | 769 | if (perf_evsel__fallback(pos, errno, msg, sizeof(msg))) { |
bb963e16 | 770 | if (verbose > 0) |
c0a54341 | 771 | ui__warning("%s\n", msg); |
d6d901c2 ZY |
772 | goto try_again; |
773 | } | |
cf99ad14 AK |
774 | if ((errno == EINVAL || errno == EBADF) && |
775 | pos->leader != pos && | |
776 | pos->weak_group) { | |
777 | pos = perf_evlist__reset_weak_group(evlist, pos); | |
778 | goto try_again; | |
779 | } | |
56e52e85 ACM |
780 | rc = -errno; |
781 | perf_evsel__open_strerror(pos, &opts->target, | |
782 | errno, msg, sizeof(msg)); | |
783 | ui__error("%s\n", msg); | |
8d3eca20 | 784 | goto out; |
c171b552 | 785 | } |
bfd8f72c AK |
786 | |
787 | pos->supported = true; | |
c171b552 | 788 | } |
a43d3f08 | 789 | |
23d4aad4 | 790 | if (perf_evlist__apply_filters(evlist, &pos)) { |
62d94b00 | 791 | pr_err("failed to set filter \"%s\" on event %s with %d (%s)\n", |
23d4aad4 | 792 | pos->filter, perf_evsel__name(pos), errno, |
c8b5f2c9 | 793 | str_error_r(errno, msg, sizeof(msg))); |
8d3eca20 | 794 | rc = -1; |
5d8bb1ec MP |
795 | goto out; |
796 | } | |
797 | ||
cda57a8c WN |
798 | rc = record__mmap(rec); |
799 | if (rc) | |
8d3eca20 | 800 | goto out; |
0a27d7f9 | 801 | |
563aecb2 | 802 | session->evlist = evlist; |
7b56cce2 | 803 | perf_session__set_id_hdr_size(session); |
8d3eca20 DA |
804 | out: |
805 | return rc; | |
16c8a109 PZ |
806 | } |
807 | ||
e3d59112 NK |
808 | static int process_sample_event(struct perf_tool *tool, |
809 | union perf_event *event, | |
810 | struct perf_sample *sample, | |
32dcd021 | 811 | struct evsel *evsel, |
e3d59112 NK |
812 | struct machine *machine) |
813 | { | |
814 | struct record *rec = container_of(tool, struct record, tool); | |
815 | ||
68588baf JY |
816 | if (rec->evlist->first_sample_time == 0) |
817 | rec->evlist->first_sample_time = sample->time; | |
818 | ||
819 | rec->evlist->last_sample_time = sample->time; | |
e3d59112 | 820 | |
68588baf JY |
821 | if (rec->buildid_all) |
822 | return 0; | |
823 | ||
824 | rec->samples++; | |
e3d59112 NK |
825 | return build_id__mark_dso_hit(tool, event, sample, evsel, machine); |
826 | } | |
827 | ||
8c6f45a7 | 828 | static int process_buildids(struct record *rec) |
6122e4e4 | 829 | { |
f5fc1412 | 830 | struct perf_session *session = rec->session; |
6122e4e4 | 831 | |
45112e89 | 832 | if (perf_data__size(&rec->data) == 0) |
9f591fd7 ACM |
833 | return 0; |
834 | ||
00dc8657 NK |
835 | /* |
836 | * During this process, it'll load kernel map and replace the | |
837 | * dso->long_name to a real pathname it found. In this case | |
838 | * we prefer the vmlinux path like | |
839 | * /lib/modules/3.16.4/build/vmlinux | |
840 | * | |
841 | * rather than build-id path (in debug directory). | |
842 | * $HOME/.debug/.build-id/f0/6e17aa50adf4d00b88925e03775de107611551 | |
843 | */ | |
844 | symbol_conf.ignore_vmlinux_buildid = true; | |
845 | ||
6156681b NK |
846 | /* |
847 | * If --buildid-all is given, it marks all DSO regardless of hits, | |
68588baf JY |
848 | * so no need to process samples. But if timestamp_boundary is enabled, |
849 | * it still needs to walk on all samples to get the timestamps of | |
850 | * first/last samples. | |
6156681b | 851 | */ |
68588baf | 852 | if (rec->buildid_all && !rec->timestamp_boundary) |
6156681b NK |
853 | rec->tool.sample = NULL; |
854 | ||
b7b61cbe | 855 | return perf_session__process_events(session); |
6122e4e4 ACM |
856 | } |
857 | ||
8115d60c | 858 | static void perf_event__synthesize_guest_os(struct machine *machine, void *data) |
a1645ce1 ZY |
859 | { |
860 | int err; | |
45694aa7 | 861 | struct perf_tool *tool = data; |
a1645ce1 ZY |
862 | /* |
863 | *As for guest kernel when processing subcommand record&report, | |
864 | *we arrange module mmap prior to guest kernel mmap and trigger | |
865 | *a preload dso because default guest module symbols are loaded | |
866 | *from guest kallsyms instead of /lib/modules/XXX/XXX. This | |
867 | *method is used to avoid symbol missing when the first addr is | |
868 | *in module instead of in guest kernel. | |
869 | */ | |
45694aa7 | 870 | err = perf_event__synthesize_modules(tool, process_synthesized_event, |
743eb868 | 871 | machine); |
a1645ce1 ZY |
872 | if (err < 0) |
873 | pr_err("Couldn't record guest kernel [%d]'s reference" | |
23346f21 | 874 | " relocation symbol.\n", machine->pid); |
a1645ce1 | 875 | |
a1645ce1 ZY |
876 | /* |
877 | * We use _stext for guest kernel because guest kernel's /proc/kallsyms | |
878 | * have no _text sometimes. | |
879 | */ | |
45694aa7 | 880 | err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event, |
0ae617be | 881 | machine); |
a1645ce1 ZY |
882 | if (err < 0) |
883 | pr_err("Couldn't record guest kernel [%d]'s reference" | |
23346f21 | 884 | " relocation symbol.\n", machine->pid); |
a1645ce1 ZY |
885 | } |
886 | ||
98402807 FW |
887 | static struct perf_event_header finished_round_event = { |
888 | .size = sizeof(struct perf_event_header), | |
889 | .type = PERF_RECORD_FINISHED_ROUND, | |
890 | }; | |
891 | ||
f13de660 AB |
892 | static void record__adjust_affinity(struct record *rec, struct perf_mmap *map) |
893 | { | |
894 | if (rec->opts.affinity != PERF_AFFINITY_SYS && | |
895 | !CPU_EQUAL(&rec->affinity_mask, &map->affinity_mask)) { | |
896 | CPU_ZERO(&rec->affinity_mask); | |
897 | CPU_OR(&rec->affinity_mask, &rec->affinity_mask, &map->affinity_mask); | |
898 | sched_setaffinity(0, sizeof(rec->affinity_mask), &rec->affinity_mask); | |
899 | } | |
900 | } | |
901 | ||
5d7f4116 AB |
902 | static size_t process_comp_header(void *record, size_t increment) |
903 | { | |
72932371 | 904 | struct perf_record_compressed *event = record; |
5d7f4116 AB |
905 | size_t size = sizeof(*event); |
906 | ||
907 | if (increment) { | |
908 | event->header.size += increment; | |
909 | return increment; | |
910 | } | |
911 | ||
912 | event->header.type = PERF_RECORD_COMPRESSED; | |
913 | event->header.size = size; | |
914 | ||
915 | return size; | |
916 | } | |
917 | ||
918 | static size_t zstd_compress(struct perf_session *session, void *dst, size_t dst_size, | |
919 | void *src, size_t src_size) | |
920 | { | |
921 | size_t compressed; | |
72932371 | 922 | size_t max_record_size = PERF_SAMPLE_MAX_SIZE - sizeof(struct perf_record_compressed) - 1; |
5d7f4116 AB |
923 | |
924 | compressed = zstd_compress_stream_to_records(&session->zstd_data, dst, dst_size, src, src_size, | |
925 | max_record_size, process_comp_header); | |
926 | ||
927 | session->bytes_transferred += src_size; | |
928 | session->bytes_compressed += compressed; | |
929 | ||
930 | return compressed; | |
931 | } | |
932 | ||
63503dba | 933 | static int record__mmap_read_evlist(struct record *rec, struct evlist *evlist, |
470530bb | 934 | bool overwrite, bool synch) |
98402807 | 935 | { |
dcabb507 | 936 | u64 bytes_written = rec->bytes_written; |
0e2e63dd | 937 | int i; |
8d3eca20 | 938 | int rc = 0; |
a4ea0ec4 | 939 | struct perf_mmap *maps; |
d3d1af6f | 940 | int trace_fd = rec->data.file.fd; |
ef781128 | 941 | off_t off = 0; |
98402807 | 942 | |
cb21686b WN |
943 | if (!evlist) |
944 | return 0; | |
ef149c25 | 945 | |
0b72d69a | 946 | maps = overwrite ? evlist->overwrite_mmap : evlist->mmap; |
a4ea0ec4 WN |
947 | if (!maps) |
948 | return 0; | |
949 | ||
0b72d69a | 950 | if (overwrite && evlist->bkw_mmap_state != BKW_MMAP_DATA_PENDING) |
54cc54de WN |
951 | return 0; |
952 | ||
d3d1af6f AB |
953 | if (record__aio_enabled(rec)) |
954 | off = record__aio_get_pos(trace_fd); | |
955 | ||
cb21686b | 956 | for (i = 0; i < evlist->nr_mmaps; i++) { |
470530bb | 957 | u64 flush = 0; |
e035f4ca | 958 | struct perf_mmap *map = &maps[i]; |
cb21686b | 959 | |
e035f4ca | 960 | if (map->base) { |
f13de660 | 961 | record__adjust_affinity(rec, map); |
470530bb AB |
962 | if (synch) { |
963 | flush = map->flush; | |
964 | map->flush = 1; | |
965 | } | |
d3d1af6f | 966 | if (!record__aio_enabled(rec)) { |
ef781128 | 967 | if (perf_mmap__push(map, rec, record__pushfn) < 0) { |
470530bb AB |
968 | if (synch) |
969 | map->flush = flush; | |
d3d1af6f AB |
970 | rc = -1; |
971 | goto out; | |
972 | } | |
973 | } else { | |
ef781128 | 974 | if (record__aio_push(rec, map, &off) < 0) { |
d3d1af6f | 975 | record__aio_set_pos(trace_fd, off); |
470530bb AB |
976 | if (synch) |
977 | map->flush = flush; | |
d3d1af6f AB |
978 | rc = -1; |
979 | goto out; | |
980 | } | |
8d3eca20 | 981 | } |
470530bb AB |
982 | if (synch) |
983 | map->flush = flush; | |
8d3eca20 | 984 | } |
ef149c25 | 985 | |
e035f4ca JO |
986 | if (map->auxtrace_mmap.base && !rec->opts.auxtrace_snapshot_mode && |
987 | record__auxtrace_mmap_read(rec, map) != 0) { | |
ef149c25 AH |
988 | rc = -1; |
989 | goto out; | |
990 | } | |
98402807 FW |
991 | } |
992 | ||
d3d1af6f AB |
993 | if (record__aio_enabled(rec)) |
994 | record__aio_set_pos(trace_fd, off); | |
995 | ||
dcabb507 JO |
996 | /* |
997 | * Mark the round finished in case we wrote | |
998 | * at least one event. | |
999 | */ | |
1000 | if (bytes_written != rec->bytes_written) | |
ded2b8fe | 1001 | rc = record__write(rec, NULL, &finished_round_event, sizeof(finished_round_event)); |
8d3eca20 | 1002 | |
0b72d69a | 1003 | if (overwrite) |
54cc54de | 1004 | perf_evlist__toggle_bkw_mmap(evlist, BKW_MMAP_EMPTY); |
8d3eca20 DA |
1005 | out: |
1006 | return rc; | |
98402807 FW |
1007 | } |
1008 | ||
470530bb | 1009 | static int record__mmap_read_all(struct record *rec, bool synch) |
cb21686b WN |
1010 | { |
1011 | int err; | |
1012 | ||
470530bb | 1013 | err = record__mmap_read_evlist(rec, rec->evlist, false, synch); |
cb21686b WN |
1014 | if (err) |
1015 | return err; | |
1016 | ||
470530bb | 1017 | return record__mmap_read_evlist(rec, rec->evlist, true, synch); |
cb21686b WN |
1018 | } |
1019 | ||
8c6f45a7 | 1020 | static void record__init_features(struct record *rec) |
57706abc | 1021 | { |
57706abc DA |
1022 | struct perf_session *session = rec->session; |
1023 | int feat; | |
1024 | ||
1025 | for (feat = HEADER_FIRST_FEATURE; feat < HEADER_LAST_FEATURE; feat++) | |
1026 | perf_header__set_feat(&session->header, feat); | |
1027 | ||
1028 | if (rec->no_buildid) | |
1029 | perf_header__clear_feat(&session->header, HEADER_BUILD_ID); | |
1030 | ||
ce9036a6 | 1031 | if (!have_tracepoints(&rec->evlist->core.entries)) |
57706abc DA |
1032 | perf_header__clear_feat(&session->header, HEADER_TRACING_DATA); |
1033 | ||
1034 | if (!rec->opts.branch_stack) | |
1035 | perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK); | |
ef149c25 AH |
1036 | |
1037 | if (!rec->opts.full_auxtrace) | |
1038 | perf_header__clear_feat(&session->header, HEADER_AUXTRACE); | |
ffa517ad | 1039 | |
cf790516 AB |
1040 | if (!(rec->opts.use_clockid && rec->opts.clockid_res_ns)) |
1041 | perf_header__clear_feat(&session->header, HEADER_CLOCKID); | |
1042 | ||
258031c0 | 1043 | perf_header__clear_feat(&session->header, HEADER_DIR_FORMAT); |
42e1fd80 AB |
1044 | if (!record__comp_enabled(rec)) |
1045 | perf_header__clear_feat(&session->header, HEADER_COMPRESSED); | |
258031c0 | 1046 | |
ffa517ad | 1047 | perf_header__clear_feat(&session->header, HEADER_STAT); |
57706abc DA |
1048 | } |
1049 | ||
e1ab48ba WN |
1050 | static void |
1051 | record__finish_output(struct record *rec) | |
1052 | { | |
8ceb41d7 JO |
1053 | struct perf_data *data = &rec->data; |
1054 | int fd = perf_data__fd(data); | |
e1ab48ba | 1055 | |
8ceb41d7 | 1056 | if (data->is_pipe) |
e1ab48ba WN |
1057 | return; |
1058 | ||
1059 | rec->session->header.data_size += rec->bytes_written; | |
45112e89 | 1060 | data->file.size = lseek(perf_data__fd(data), 0, SEEK_CUR); |
e1ab48ba WN |
1061 | |
1062 | if (!rec->no_buildid) { | |
1063 | process_buildids(rec); | |
1064 | ||
1065 | if (rec->buildid_all) | |
1066 | dsos__hit_all(rec->session); | |
1067 | } | |
1068 | perf_session__write_header(rec->session, rec->evlist, fd, true); | |
1069 | ||
1070 | return; | |
1071 | } | |
1072 | ||
4ea648ae | 1073 | static int record__synthesize_workload(struct record *rec, bool tail) |
be7b0c9e | 1074 | { |
9d6aae72 | 1075 | int err; |
9749b90e | 1076 | struct perf_thread_map *thread_map; |
be7b0c9e | 1077 | |
4ea648ae WN |
1078 | if (rec->opts.tail_synthesize != tail) |
1079 | return 0; | |
1080 | ||
9d6aae72 ACM |
1081 | thread_map = thread_map__new_by_tid(rec->evlist->workload.pid); |
1082 | if (thread_map == NULL) | |
1083 | return -1; | |
1084 | ||
1085 | err = perf_event__synthesize_thread_map(&rec->tool, thread_map, | |
be7b0c9e WN |
1086 | process_synthesized_event, |
1087 | &rec->session->machines.host, | |
3fcb10e4 | 1088 | rec->opts.sample_address); |
7836e52e | 1089 | perf_thread_map__put(thread_map); |
9d6aae72 | 1090 | return err; |
be7b0c9e WN |
1091 | } |
1092 | ||
4ea648ae | 1093 | static int record__synthesize(struct record *rec, bool tail); |
3c1cb7e3 | 1094 | |
ecfd7a9c WN |
1095 | static int |
1096 | record__switch_output(struct record *rec, bool at_exit) | |
1097 | { | |
8ceb41d7 | 1098 | struct perf_data *data = &rec->data; |
ecfd7a9c | 1099 | int fd, err; |
03724b2e | 1100 | char *new_filename; |
ecfd7a9c WN |
1101 | |
1102 | /* Same Size: "2015122520103046"*/ | |
1103 | char timestamp[] = "InvalidTimestamp"; | |
1104 | ||
d3d1af6f AB |
1105 | record__aio_mmap_read_sync(rec); |
1106 | ||
4ea648ae WN |
1107 | record__synthesize(rec, true); |
1108 | if (target__none(&rec->opts.target)) | |
1109 | record__synthesize_workload(rec, true); | |
1110 | ||
ecfd7a9c WN |
1111 | rec->samples = 0; |
1112 | record__finish_output(rec); | |
1113 | err = fetch_current_timestamp(timestamp, sizeof(timestamp)); | |
1114 | if (err) { | |
1115 | pr_err("Failed to get current timestamp\n"); | |
1116 | return -EINVAL; | |
1117 | } | |
1118 | ||
8ceb41d7 | 1119 | fd = perf_data__switch(data, timestamp, |
ecfd7a9c | 1120 | rec->session->header.data_offset, |
03724b2e | 1121 | at_exit, &new_filename); |
ecfd7a9c WN |
1122 | if (fd >= 0 && !at_exit) { |
1123 | rec->bytes_written = 0; | |
1124 | rec->session->header.data_size = 0; | |
1125 | } | |
1126 | ||
1127 | if (!quiet) | |
1128 | fprintf(stderr, "[ perf record: Dump %s.%s ]\n", | |
2d4f2799 | 1129 | data->path, timestamp); |
3c1cb7e3 | 1130 | |
03724b2e AK |
1131 | if (rec->switch_output.num_files) { |
1132 | int n = rec->switch_output.cur_file + 1; | |
1133 | ||
1134 | if (n >= rec->switch_output.num_files) | |
1135 | n = 0; | |
1136 | rec->switch_output.cur_file = n; | |
1137 | if (rec->switch_output.filenames[n]) { | |
1138 | remove(rec->switch_output.filenames[n]); | |
d8f9da24 | 1139 | zfree(&rec->switch_output.filenames[n]); |
03724b2e AK |
1140 | } |
1141 | rec->switch_output.filenames[n] = new_filename; | |
1142 | } else { | |
1143 | free(new_filename); | |
1144 | } | |
1145 | ||
3c1cb7e3 | 1146 | /* Output tracking events */ |
be7b0c9e | 1147 | if (!at_exit) { |
4ea648ae | 1148 | record__synthesize(rec, false); |
3c1cb7e3 | 1149 | |
be7b0c9e WN |
1150 | /* |
1151 | * In 'perf record --switch-output' without -a, | |
1152 | * record__synthesize() in record__switch_output() won't | |
1153 | * generate tracking events because there's no thread_map | |
1154 | * in evlist. Which causes newly created perf.data doesn't | |
1155 | * contain map and comm information. | |
1156 | * Create a fake thread_map and directly call | |
1157 | * perf_event__synthesize_thread_map() for those events. | |
1158 | */ | |
1159 | if (target__none(&rec->opts.target)) | |
4ea648ae | 1160 | record__synthesize_workload(rec, false); |
be7b0c9e | 1161 | } |
ecfd7a9c WN |
1162 | return fd; |
1163 | } | |
1164 | ||
f33cbe72 ACM |
1165 | static volatile int workload_exec_errno; |
1166 | ||
1167 | /* | |
1168 | * perf_evlist__prepare_workload will send a SIGUSR1 | |
1169 | * if the fork fails, since we asked by setting its | |
1170 | * want_signal to true. | |
1171 | */ | |
45604710 NK |
1172 | static void workload_exec_failed_signal(int signo __maybe_unused, |
1173 | siginfo_t *info, | |
f33cbe72 ACM |
1174 | void *ucontext __maybe_unused) |
1175 | { | |
1176 | workload_exec_errno = info->si_value.sival_int; | |
1177 | done = 1; | |
f33cbe72 ACM |
1178 | child_finished = 1; |
1179 | } | |
1180 | ||
2dd6d8a1 | 1181 | static void snapshot_sig_handler(int sig); |
bfacbe3b | 1182 | static void alarm_sig_handler(int sig); |
2dd6d8a1 | 1183 | |
ee667f94 | 1184 | static const struct perf_event_mmap_page * |
63503dba | 1185 | perf_evlist__pick_pc(struct evlist *evlist) |
ee667f94 | 1186 | { |
b2cb615d WN |
1187 | if (evlist) { |
1188 | if (evlist->mmap && evlist->mmap[0].base) | |
1189 | return evlist->mmap[0].base; | |
0b72d69a WN |
1190 | if (evlist->overwrite_mmap && evlist->overwrite_mmap[0].base) |
1191 | return evlist->overwrite_mmap[0].base; | |
b2cb615d | 1192 | } |
ee667f94 WN |
1193 | return NULL; |
1194 | } | |
1195 | ||
c45628b0 WN |
1196 | static const struct perf_event_mmap_page *record__pick_pc(struct record *rec) |
1197 | { | |
ee667f94 WN |
1198 | const struct perf_event_mmap_page *pc; |
1199 | ||
1200 | pc = perf_evlist__pick_pc(rec->evlist); | |
1201 | if (pc) | |
1202 | return pc; | |
c45628b0 WN |
1203 | return NULL; |
1204 | } | |
1205 | ||
4ea648ae | 1206 | static int record__synthesize(struct record *rec, bool tail) |
c45c86eb WN |
1207 | { |
1208 | struct perf_session *session = rec->session; | |
1209 | struct machine *machine = &session->machines.host; | |
8ceb41d7 | 1210 | struct perf_data *data = &rec->data; |
c45c86eb WN |
1211 | struct record_opts *opts = &rec->opts; |
1212 | struct perf_tool *tool = &rec->tool; | |
8ceb41d7 | 1213 | int fd = perf_data__fd(data); |
c45c86eb WN |
1214 | int err = 0; |
1215 | ||
4ea648ae WN |
1216 | if (rec->opts.tail_synthesize != tail) |
1217 | return 0; | |
1218 | ||
8ceb41d7 | 1219 | if (data->is_pipe) { |
a2015516 JO |
1220 | /* |
1221 | * We need to synthesize events first, because some | |
1222 | * features works on top of them (on report side). | |
1223 | */ | |
318ec184 | 1224 | err = perf_event__synthesize_attrs(tool, rec->evlist, |
c45c86eb WN |
1225 | process_synthesized_event); |
1226 | if (err < 0) { | |
1227 | pr_err("Couldn't synthesize attrs.\n"); | |
1228 | goto out; | |
1229 | } | |
1230 | ||
a2015516 JO |
1231 | err = perf_event__synthesize_features(tool, session, rec->evlist, |
1232 | process_synthesized_event); | |
1233 | if (err < 0) { | |
1234 | pr_err("Couldn't synthesize features.\n"); | |
1235 | return err; | |
1236 | } | |
1237 | ||
ce9036a6 | 1238 | if (have_tracepoints(&rec->evlist->core.entries)) { |
c45c86eb WN |
1239 | /* |
1240 | * FIXME err <= 0 here actually means that | |
1241 | * there were no tracepoints so its not really | |
1242 | * an error, just that we don't need to | |
1243 | * synthesize anything. We really have to | |
1244 | * return this more properly and also | |
1245 | * propagate errors that now are calling die() | |
1246 | */ | |
1247 | err = perf_event__synthesize_tracing_data(tool, fd, rec->evlist, | |
1248 | process_synthesized_event); | |
1249 | if (err <= 0) { | |
1250 | pr_err("Couldn't record tracing data.\n"); | |
1251 | goto out; | |
1252 | } | |
1253 | rec->bytes_written += err; | |
1254 | } | |
1255 | } | |
1256 | ||
c45628b0 | 1257 | err = perf_event__synth_time_conv(record__pick_pc(rec), tool, |
46bc29b9 AH |
1258 | process_synthesized_event, machine); |
1259 | if (err) | |
1260 | goto out; | |
1261 | ||
c45c86eb WN |
1262 | if (rec->opts.full_auxtrace) { |
1263 | err = perf_event__synthesize_auxtrace_info(rec->itr, tool, | |
1264 | session, process_synthesized_event); | |
1265 | if (err) | |
1266 | goto out; | |
1267 | } | |
1268 | ||
6c443954 ACM |
1269 | if (!perf_evlist__exclude_kernel(rec->evlist)) { |
1270 | err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event, | |
1271 | machine); | |
1272 | WARN_ONCE(err < 0, "Couldn't record kernel reference relocation symbol\n" | |
1273 | "Symbol resolution may be skewed if relocation was used (e.g. kexec).\n" | |
1274 | "Check /proc/kallsyms permission or run as root.\n"); | |
1275 | ||
1276 | err = perf_event__synthesize_modules(tool, process_synthesized_event, | |
1277 | machine); | |
1278 | WARN_ONCE(err < 0, "Couldn't record kernel module information.\n" | |
1279 | "Symbol resolution may be skewed if relocation was used (e.g. kexec).\n" | |
1280 | "Check /proc/modules permission or run as root.\n"); | |
1281 | } | |
c45c86eb WN |
1282 | |
1283 | if (perf_guest) { | |
1284 | machines__process_guests(&session->machines, | |
1285 | perf_event__synthesize_guest_os, tool); | |
1286 | } | |
1287 | ||
bfd8f72c AK |
1288 | err = perf_event__synthesize_extra_attr(&rec->tool, |
1289 | rec->evlist, | |
1290 | process_synthesized_event, | |
1291 | data->is_pipe); | |
1292 | if (err) | |
1293 | goto out; | |
1294 | ||
03617c22 | 1295 | err = perf_event__synthesize_thread_map2(&rec->tool, rec->evlist->core.threads, |
373565d2 AK |
1296 | process_synthesized_event, |
1297 | NULL); | |
1298 | if (err < 0) { | |
1299 | pr_err("Couldn't synthesize thread map.\n"); | |
1300 | return err; | |
1301 | } | |
1302 | ||
f72f901d | 1303 | err = perf_event__synthesize_cpu_map(&rec->tool, rec->evlist->core.cpus, |
373565d2 AK |
1304 | process_synthesized_event, NULL); |
1305 | if (err < 0) { | |
1306 | pr_err("Couldn't synthesize cpu map.\n"); | |
1307 | return err; | |
1308 | } | |
1309 | ||
e5416950 | 1310 | err = perf_event__synthesize_bpf_events(session, process_synthesized_event, |
7b612e29 SL |
1311 | machine, opts); |
1312 | if (err < 0) | |
1313 | pr_warning("Couldn't synthesize bpf events.\n"); | |
1314 | ||
03617c22 | 1315 | err = __machine__synthesize_threads(machine, tool, &opts->target, rec->evlist->core.threads, |
c45c86eb | 1316 | process_synthesized_event, opts->sample_address, |
3fcb10e4 | 1317 | 1); |
c45c86eb WN |
1318 | out: |
1319 | return err; | |
1320 | } | |
1321 | ||
8c6f45a7 | 1322 | static int __cmd_record(struct record *rec, int argc, const char **argv) |
16c8a109 | 1323 | { |
57706abc | 1324 | int err; |
45604710 | 1325 | int status = 0; |
8b412664 | 1326 | unsigned long waking = 0; |
46be604b | 1327 | const bool forks = argc > 0; |
45694aa7 | 1328 | struct perf_tool *tool = &rec->tool; |
b4006796 | 1329 | struct record_opts *opts = &rec->opts; |
8ceb41d7 | 1330 | struct perf_data *data = &rec->data; |
d20deb64 | 1331 | struct perf_session *session; |
6dcf45ef | 1332 | bool disabled = false, draining = false; |
63503dba | 1333 | struct evlist *sb_evlist = NULL; |
42aa276f | 1334 | int fd; |
d3c8c08e | 1335 | float ratio = 0; |
de9ac07b | 1336 | |
45604710 | 1337 | atexit(record__sig_exit); |
f5970550 PZ |
1338 | signal(SIGCHLD, sig_handler); |
1339 | signal(SIGINT, sig_handler); | |
804f7ac7 | 1340 | signal(SIGTERM, sig_handler); |
a074865e | 1341 | signal(SIGSEGV, sigsegv_handler); |
c0bdc1c4 | 1342 | |
f3b3614a HB |
1343 | if (rec->opts.record_namespaces) |
1344 | tool->namespace_events = true; | |
1345 | ||
dc0c6127 | 1346 | if (rec->opts.auxtrace_snapshot_mode || rec->switch_output.enabled) { |
2dd6d8a1 | 1347 | signal(SIGUSR2, snapshot_sig_handler); |
3c1cb7e3 WN |
1348 | if (rec->opts.auxtrace_snapshot_mode) |
1349 | trigger_on(&auxtrace_snapshot_trigger); | |
dc0c6127 | 1350 | if (rec->switch_output.enabled) |
3c1cb7e3 | 1351 | trigger_on(&switch_output_trigger); |
c0bdc1c4 | 1352 | } else { |
2dd6d8a1 | 1353 | signal(SIGUSR2, SIG_IGN); |
c0bdc1c4 | 1354 | } |
f5970550 | 1355 | |
8ceb41d7 | 1356 | session = perf_session__new(data, false, tool); |
94c744b6 | 1357 | if (session == NULL) { |
ffa91880 | 1358 | pr_err("Perf session creation failed.\n"); |
a9a70bbc ACM |
1359 | return -1; |
1360 | } | |
1361 | ||
8ceb41d7 | 1362 | fd = perf_data__fd(data); |
d20deb64 ACM |
1363 | rec->session = session; |
1364 | ||
5d7f4116 AB |
1365 | if (zstd_init(&session->zstd_data, rec->opts.comp_level) < 0) { |
1366 | pr_err("Compression initialization failed.\n"); | |
1367 | return -1; | |
1368 | } | |
1369 | ||
1370 | session->header.env.comp_type = PERF_COMP_ZSTD; | |
1371 | session->header.env.comp_level = rec->opts.comp_level; | |
1372 | ||
8c6f45a7 | 1373 | record__init_features(rec); |
330aa675 | 1374 | |
cf790516 AB |
1375 | if (rec->opts.use_clockid && rec->opts.clockid_res_ns) |
1376 | session->header.env.clockid_res_ns = rec->opts.clockid_res_ns; | |
1377 | ||
d4db3f16 | 1378 | if (forks) { |
3e2be2da | 1379 | err = perf_evlist__prepare_workload(rec->evlist, &opts->target, |
8ceb41d7 | 1380 | argv, data->is_pipe, |
735f7e0b | 1381 | workload_exec_failed_signal); |
35b9d88e ACM |
1382 | if (err < 0) { |
1383 | pr_err("Couldn't run the workload!\n"); | |
45604710 | 1384 | status = err; |
35b9d88e | 1385 | goto out_delete_session; |
856e9660 | 1386 | } |
856e9660 PZ |
1387 | } |
1388 | ||
ad46e48c JO |
1389 | /* |
1390 | * If we have just single event and are sending data | |
1391 | * through pipe, we need to force the ids allocation, | |
1392 | * because we synthesize event name through the pipe | |
1393 | * and need the id for that. | |
1394 | */ | |
6484d2f9 | 1395 | if (data->is_pipe && rec->evlist->core.nr_entries == 1) |
ad46e48c JO |
1396 | rec->opts.sample_id = true; |
1397 | ||
8c6f45a7 | 1398 | if (record__open(rec) != 0) { |
8d3eca20 | 1399 | err = -1; |
45604710 | 1400 | goto out_child; |
8d3eca20 | 1401 | } |
42e1fd80 | 1402 | session->header.env.comp_mmap_len = session->evlist->mmap_len; |
de9ac07b | 1403 | |
8690a2a7 WN |
1404 | err = bpf__apply_obj_config(); |
1405 | if (err) { | |
1406 | char errbuf[BUFSIZ]; | |
1407 | ||
1408 | bpf__strerror_apply_obj_config(err, errbuf, sizeof(errbuf)); | |
1409 | pr_err("ERROR: Apply config to BPF failed: %s\n", | |
1410 | errbuf); | |
1411 | goto out_child; | |
1412 | } | |
1413 | ||
cca8482c AH |
1414 | /* |
1415 | * Normally perf_session__new would do this, but it doesn't have the | |
1416 | * evlist. | |
1417 | */ | |
1418 | if (rec->tool.ordered_events && !perf_evlist__sample_id_all(rec->evlist)) { | |
1419 | pr_warning("WARNING: No sample_id_all support, falling back to unordered processing\n"); | |
1420 | rec->tool.ordered_events = false; | |
1421 | } | |
1422 | ||
3e2be2da | 1423 | if (!rec->evlist->nr_groups) |
a8bb559b NK |
1424 | perf_header__clear_feat(&session->header, HEADER_GROUP_DESC); |
1425 | ||
8ceb41d7 | 1426 | if (data->is_pipe) { |
42aa276f | 1427 | err = perf_header__write_pipe(fd); |
529870e3 | 1428 | if (err < 0) |
45604710 | 1429 | goto out_child; |
563aecb2 | 1430 | } else { |
42aa276f | 1431 | err = perf_session__write_header(session, rec->evlist, fd, false); |
d5eed904 | 1432 | if (err < 0) |
45604710 | 1433 | goto out_child; |
56b03f3c ACM |
1434 | } |
1435 | ||
d3665498 | 1436 | if (!rec->no_buildid |
e20960c0 | 1437 | && !perf_header__has_feat(&session->header, HEADER_BUILD_ID)) { |
d3665498 | 1438 | pr_err("Couldn't generate buildids. " |
e20960c0 | 1439 | "Use --no-buildid to profile anyway.\n"); |
8d3eca20 | 1440 | err = -1; |
45604710 | 1441 | goto out_child; |
e20960c0 RR |
1442 | } |
1443 | ||
d56354dc SL |
1444 | if (!opts->no_bpf_event) |
1445 | bpf_event__add_sb_event(&sb_evlist, &session->header.env); | |
1446 | ||
657ee553 SL |
1447 | if (perf_evlist__start_sb_thread(sb_evlist, &rec->opts.target)) { |
1448 | pr_debug("Couldn't start the BPF side band thread:\nBPF programs starting from now on won't be annotatable\n"); | |
1449 | opts->no_bpf_event = true; | |
1450 | } | |
1451 | ||
4ea648ae | 1452 | err = record__synthesize(rec, false); |
c45c86eb | 1453 | if (err < 0) |
45604710 | 1454 | goto out_child; |
8d3eca20 | 1455 | |
d20deb64 | 1456 | if (rec->realtime_prio) { |
de9ac07b PZ |
1457 | struct sched_param param; |
1458 | ||
d20deb64 | 1459 | param.sched_priority = rec->realtime_prio; |
de9ac07b | 1460 | if (sched_setscheduler(0, SCHED_FIFO, ¶m)) { |
6beba7ad | 1461 | pr_err("Could not set realtime priority.\n"); |
8d3eca20 | 1462 | err = -1; |
45604710 | 1463 | goto out_child; |
de9ac07b PZ |
1464 | } |
1465 | } | |
1466 | ||
774cb499 JO |
1467 | /* |
1468 | * When perf is starting the traced process, all the events | |
1469 | * (apart from group members) have enable_on_exec=1 set, | |
1470 | * so don't spoil it by prematurely enabling them. | |
1471 | */ | |
6619a53e | 1472 | if (!target__none(&opts->target) && !opts->initial_delay) |
1c87f165 | 1473 | evlist__enable(rec->evlist); |
764e16a3 | 1474 | |
856e9660 PZ |
1475 | /* |
1476 | * Let the child rip | |
1477 | */ | |
e803cf97 | 1478 | if (forks) { |
20a8a3cf | 1479 | struct machine *machine = &session->machines.host; |
e5bed564 | 1480 | union perf_event *event; |
e907caf3 | 1481 | pid_t tgid; |
e5bed564 NK |
1482 | |
1483 | event = malloc(sizeof(event->comm) + machine->id_hdr_size); | |
1484 | if (event == NULL) { | |
1485 | err = -ENOMEM; | |
1486 | goto out_child; | |
1487 | } | |
1488 | ||
e803cf97 NK |
1489 | /* |
1490 | * Some H/W events are generated before COMM event | |
1491 | * which is emitted during exec(), so perf script | |
1492 | * cannot see a correct process name for those events. | |
1493 | * Synthesize COMM event to prevent it. | |
1494 | */ | |
e907caf3 HB |
1495 | tgid = perf_event__synthesize_comm(tool, event, |
1496 | rec->evlist->workload.pid, | |
1497 | process_synthesized_event, | |
1498 | machine); | |
1499 | free(event); | |
1500 | ||
1501 | if (tgid == -1) | |
1502 | goto out_child; | |
1503 | ||
1504 | event = malloc(sizeof(event->namespaces) + | |
1505 | (NR_NAMESPACES * sizeof(struct perf_ns_link_info)) + | |
1506 | machine->id_hdr_size); | |
1507 | if (event == NULL) { | |
1508 | err = -ENOMEM; | |
1509 | goto out_child; | |
1510 | } | |
1511 | ||
1512 | /* | |
1513 | * Synthesize NAMESPACES event for the command specified. | |
1514 | */ | |
1515 | perf_event__synthesize_namespaces(tool, event, | |
1516 | rec->evlist->workload.pid, | |
1517 | tgid, process_synthesized_event, | |
1518 | machine); | |
e5bed564 | 1519 | free(event); |
e803cf97 | 1520 | |
3e2be2da | 1521 | perf_evlist__start_workload(rec->evlist); |
e803cf97 | 1522 | } |
856e9660 | 1523 | |
6619a53e | 1524 | if (opts->initial_delay) { |
0693e680 | 1525 | usleep(opts->initial_delay * USEC_PER_MSEC); |
1c87f165 | 1526 | evlist__enable(rec->evlist); |
6619a53e AK |
1527 | } |
1528 | ||
5f9cf599 | 1529 | trigger_ready(&auxtrace_snapshot_trigger); |
3c1cb7e3 | 1530 | trigger_ready(&switch_output_trigger); |
a074865e | 1531 | perf_hooks__invoke_record_start(); |
649c48a9 | 1532 | for (;;) { |
9f065194 | 1533 | unsigned long long hits = rec->samples; |
de9ac07b | 1534 | |
05737464 WN |
1535 | /* |
1536 | * rec->evlist->bkw_mmap_state is possible to be | |
1537 | * BKW_MMAP_EMPTY here: when done == true and | |
1538 | * hits != rec->samples in previous round. | |
1539 | * | |
1540 | * perf_evlist__toggle_bkw_mmap ensure we never | |
1541 | * convert BKW_MMAP_EMPTY to BKW_MMAP_DATA_PENDING. | |
1542 | */ | |
1543 | if (trigger_is_hit(&switch_output_trigger) || done || draining) | |
1544 | perf_evlist__toggle_bkw_mmap(rec->evlist, BKW_MMAP_DATA_PENDING); | |
1545 | ||
470530bb | 1546 | if (record__mmap_read_all(rec, false) < 0) { |
5f9cf599 | 1547 | trigger_error(&auxtrace_snapshot_trigger); |
3c1cb7e3 | 1548 | trigger_error(&switch_output_trigger); |
8d3eca20 | 1549 | err = -1; |
45604710 | 1550 | goto out_child; |
8d3eca20 | 1551 | } |
de9ac07b | 1552 | |
2dd6d8a1 AH |
1553 | if (auxtrace_record__snapshot_started) { |
1554 | auxtrace_record__snapshot_started = 0; | |
5f9cf599 | 1555 | if (!trigger_is_error(&auxtrace_snapshot_trigger)) |
ce7b0e42 | 1556 | record__read_auxtrace_snapshot(rec, false); |
5f9cf599 | 1557 | if (trigger_is_error(&auxtrace_snapshot_trigger)) { |
2dd6d8a1 AH |
1558 | pr_err("AUX area tracing snapshot failed\n"); |
1559 | err = -1; | |
1560 | goto out_child; | |
1561 | } | |
1562 | } | |
1563 | ||
3c1cb7e3 | 1564 | if (trigger_is_hit(&switch_output_trigger)) { |
05737464 WN |
1565 | /* |
1566 | * If switch_output_trigger is hit, the data in | |
1567 | * overwritable ring buffer should have been collected, | |
1568 | * so bkw_mmap_state should be set to BKW_MMAP_EMPTY. | |
1569 | * | |
1570 | * If SIGUSR2 raise after or during record__mmap_read_all(), | |
1571 | * record__mmap_read_all() didn't collect data from | |
1572 | * overwritable ring buffer. Read again. | |
1573 | */ | |
1574 | if (rec->evlist->bkw_mmap_state == BKW_MMAP_RUNNING) | |
1575 | continue; | |
3c1cb7e3 WN |
1576 | trigger_ready(&switch_output_trigger); |
1577 | ||
05737464 WN |
1578 | /* |
1579 | * Reenable events in overwrite ring buffer after | |
1580 | * record__mmap_read_all(): we should have collected | |
1581 | * data from it. | |
1582 | */ | |
1583 | perf_evlist__toggle_bkw_mmap(rec->evlist, BKW_MMAP_RUNNING); | |
1584 | ||
3c1cb7e3 WN |
1585 | if (!quiet) |
1586 | fprintf(stderr, "[ perf record: dump data: Woken up %ld times ]\n", | |
1587 | waking); | |
1588 | waking = 0; | |
1589 | fd = record__switch_output(rec, false); | |
1590 | if (fd < 0) { | |
1591 | pr_err("Failed to switch to new file\n"); | |
1592 | trigger_error(&switch_output_trigger); | |
1593 | err = fd; | |
1594 | goto out_child; | |
1595 | } | |
bfacbe3b JO |
1596 | |
1597 | /* re-arm the alarm */ | |
1598 | if (rec->switch_output.time) | |
1599 | alarm(rec->switch_output.time); | |
3c1cb7e3 WN |
1600 | } |
1601 | ||
d20deb64 | 1602 | if (hits == rec->samples) { |
6dcf45ef | 1603 | if (done || draining) |
649c48a9 | 1604 | break; |
f66a889d | 1605 | err = perf_evlist__poll(rec->evlist, -1); |
a515114f JO |
1606 | /* |
1607 | * Propagate error, only if there's any. Ignore positive | |
1608 | * number of returned events and interrupt error. | |
1609 | */ | |
1610 | if (err > 0 || (err < 0 && errno == EINTR)) | |
45604710 | 1611 | err = 0; |
8b412664 | 1612 | waking++; |
6dcf45ef ACM |
1613 | |
1614 | if (perf_evlist__filter_pollfd(rec->evlist, POLLERR | POLLHUP) == 0) | |
1615 | draining = true; | |
8b412664 PZ |
1616 | } |
1617 | ||
774cb499 JO |
1618 | /* |
1619 | * When perf is starting the traced process, at the end events | |
1620 | * die with the process and we wait for that. Thus no need to | |
1621 | * disable events in this case. | |
1622 | */ | |
602ad878 | 1623 | if (done && !disabled && !target__none(&opts->target)) { |
5f9cf599 | 1624 | trigger_off(&auxtrace_snapshot_trigger); |
e74676de | 1625 | evlist__disable(rec->evlist); |
2711926a JO |
1626 | disabled = true; |
1627 | } | |
de9ac07b | 1628 | } |
ce7b0e42 | 1629 | |
5f9cf599 | 1630 | trigger_off(&auxtrace_snapshot_trigger); |
3c1cb7e3 | 1631 | trigger_off(&switch_output_trigger); |
de9ac07b | 1632 | |
ce7b0e42 AS |
1633 | if (opts->auxtrace_snapshot_on_exit) |
1634 | record__auxtrace_snapshot_exit(rec); | |
1635 | ||
f33cbe72 | 1636 | if (forks && workload_exec_errno) { |
35550da3 | 1637 | char msg[STRERR_BUFSIZE]; |
c8b5f2c9 | 1638 | const char *emsg = str_error_r(workload_exec_errno, msg, sizeof(msg)); |
f33cbe72 ACM |
1639 | pr_err("Workload failed: %s\n", emsg); |
1640 | err = -1; | |
45604710 | 1641 | goto out_child; |
f33cbe72 ACM |
1642 | } |
1643 | ||
e3d59112 | 1644 | if (!quiet) |
45604710 | 1645 | fprintf(stderr, "[ perf record: Woken up %ld times to write data ]\n", waking); |
b44308f5 | 1646 | |
4ea648ae WN |
1647 | if (target__none(&rec->opts.target)) |
1648 | record__synthesize_workload(rec, true); | |
1649 | ||
45604710 | 1650 | out_child: |
470530bb | 1651 | record__mmap_read_all(rec, true); |
d3d1af6f AB |
1652 | record__aio_mmap_read_sync(rec); |
1653 | ||
d3c8c08e AB |
1654 | if (rec->session->bytes_transferred && rec->session->bytes_compressed) { |
1655 | ratio = (float)rec->session->bytes_transferred/(float)rec->session->bytes_compressed; | |
1656 | session->header.env.comp_ratio = ratio + 0.5; | |
1657 | } | |
1658 | ||
45604710 NK |
1659 | if (forks) { |
1660 | int exit_status; | |
addc2785 | 1661 | |
45604710 NK |
1662 | if (!child_finished) |
1663 | kill(rec->evlist->workload.pid, SIGTERM); | |
1664 | ||
1665 | wait(&exit_status); | |
1666 | ||
1667 | if (err < 0) | |
1668 | status = err; | |
1669 | else if (WIFEXITED(exit_status)) | |
1670 | status = WEXITSTATUS(exit_status); | |
1671 | else if (WIFSIGNALED(exit_status)) | |
1672 | signr = WTERMSIG(exit_status); | |
1673 | } else | |
1674 | status = err; | |
1675 | ||
4ea648ae | 1676 | record__synthesize(rec, true); |
e3d59112 NK |
1677 | /* this will be recalculated during process_buildids() */ |
1678 | rec->samples = 0; | |
1679 | ||
ecfd7a9c WN |
1680 | if (!err) { |
1681 | if (!rec->timestamp_filename) { | |
1682 | record__finish_output(rec); | |
1683 | } else { | |
1684 | fd = record__switch_output(rec, true); | |
1685 | if (fd < 0) { | |
1686 | status = fd; | |
1687 | goto out_delete_session; | |
1688 | } | |
1689 | } | |
1690 | } | |
39d17dac | 1691 | |
a074865e WN |
1692 | perf_hooks__invoke_record_end(); |
1693 | ||
e3d59112 NK |
1694 | if (!err && !quiet) { |
1695 | char samples[128]; | |
ecfd7a9c WN |
1696 | const char *postfix = rec->timestamp_filename ? |
1697 | ".<timestamp>" : ""; | |
e3d59112 | 1698 | |
ef149c25 | 1699 | if (rec->samples && !rec->opts.full_auxtrace) |
e3d59112 NK |
1700 | scnprintf(samples, sizeof(samples), |
1701 | " (%" PRIu64 " samples)", rec->samples); | |
1702 | else | |
1703 | samples[0] = '\0'; | |
1704 | ||
d3c8c08e | 1705 | fprintf(stderr, "[ perf record: Captured and wrote %.3f MB %s%s%s", |
8ceb41d7 | 1706 | perf_data__size(data) / 1024.0 / 1024.0, |
2d4f2799 | 1707 | data->path, postfix, samples); |
d3c8c08e AB |
1708 | if (ratio) { |
1709 | fprintf(stderr, ", compressed (original %.3f MB, ratio is %.3f)", | |
1710 | rec->session->bytes_transferred / 1024.0 / 1024.0, | |
1711 | ratio); | |
1712 | } | |
1713 | fprintf(stderr, " ]\n"); | |
e3d59112 NK |
1714 | } |
1715 | ||
39d17dac | 1716 | out_delete_session: |
5d7f4116 | 1717 | zstd_fini(&session->zstd_data); |
39d17dac | 1718 | perf_session__delete(session); |
657ee553 SL |
1719 | |
1720 | if (!opts->no_bpf_event) | |
1721 | perf_evlist__stop_sb_thread(sb_evlist); | |
45604710 | 1722 | return status; |
de9ac07b | 1723 | } |
0e9b20b8 | 1724 | |
0883e820 | 1725 | static void callchain_debug(struct callchain_param *callchain) |
09b0fd45 | 1726 | { |
aad2b21c | 1727 | static const char *str[CALLCHAIN_MAX] = { "NONE", "FP", "DWARF", "LBR" }; |
a601fdff | 1728 | |
0883e820 | 1729 | pr_debug("callchain: type %s\n", str[callchain->record_mode]); |
26d33022 | 1730 | |
0883e820 | 1731 | if (callchain->record_mode == CALLCHAIN_DWARF) |
09b0fd45 | 1732 | pr_debug("callchain: stack dump size %d\n", |
0883e820 | 1733 | callchain->dump_size); |
09b0fd45 JO |
1734 | } |
1735 | ||
0883e820 ACM |
1736 | int record_opts__parse_callchain(struct record_opts *record, |
1737 | struct callchain_param *callchain, | |
1738 | const char *arg, bool unset) | |
09b0fd45 | 1739 | { |
09b0fd45 | 1740 | int ret; |
0883e820 | 1741 | callchain->enabled = !unset; |
eb853e80 | 1742 | |
09b0fd45 JO |
1743 | /* --no-call-graph */ |
1744 | if (unset) { | |
0883e820 | 1745 | callchain->record_mode = CALLCHAIN_NONE; |
09b0fd45 JO |
1746 | pr_debug("callchain: disabled\n"); |
1747 | return 0; | |
1748 | } | |
1749 | ||
0883e820 | 1750 | ret = parse_callchain_record_opt(arg, callchain); |
5c0cf224 JO |
1751 | if (!ret) { |
1752 | /* Enable data address sampling for DWARF unwind. */ | |
0883e820 | 1753 | if (callchain->record_mode == CALLCHAIN_DWARF) |
5c0cf224 | 1754 | record->sample_address = true; |
0883e820 | 1755 | callchain_debug(callchain); |
5c0cf224 | 1756 | } |
26d33022 JO |
1757 | |
1758 | return ret; | |
1759 | } | |
1760 | ||
0883e820 ACM |
1761 | int record_parse_callchain_opt(const struct option *opt, |
1762 | const char *arg, | |
1763 | int unset) | |
1764 | { | |
1765 | return record_opts__parse_callchain(opt->value, &callchain_param, arg, unset); | |
1766 | } | |
1767 | ||
c421e80b | 1768 | int record_callchain_opt(const struct option *opt, |
09b0fd45 JO |
1769 | const char *arg __maybe_unused, |
1770 | int unset __maybe_unused) | |
1771 | { | |
2ddd5c04 | 1772 | struct callchain_param *callchain = opt->value; |
c421e80b | 1773 | |
2ddd5c04 | 1774 | callchain->enabled = true; |
09b0fd45 | 1775 | |
2ddd5c04 ACM |
1776 | if (callchain->record_mode == CALLCHAIN_NONE) |
1777 | callchain->record_mode = CALLCHAIN_FP; | |
eb853e80 | 1778 | |
2ddd5c04 | 1779 | callchain_debug(callchain); |
09b0fd45 JO |
1780 | return 0; |
1781 | } | |
1782 | ||
eb853e80 JO |
1783 | static int perf_record_config(const char *var, const char *value, void *cb) |
1784 | { | |
7a29c087 NK |
1785 | struct record *rec = cb; |
1786 | ||
1787 | if (!strcmp(var, "record.build-id")) { | |
1788 | if (!strcmp(value, "cache")) | |
1789 | rec->no_buildid_cache = false; | |
1790 | else if (!strcmp(value, "no-cache")) | |
1791 | rec->no_buildid_cache = true; | |
1792 | else if (!strcmp(value, "skip")) | |
1793 | rec->no_buildid = true; | |
1794 | else | |
1795 | return -1; | |
1796 | return 0; | |
1797 | } | |
cff17205 YX |
1798 | if (!strcmp(var, "record.call-graph")) { |
1799 | var = "call-graph.record-mode"; | |
1800 | return perf_default_config(var, value, cb); | |
1801 | } | |
93f20c0f AB |
1802 | #ifdef HAVE_AIO_SUPPORT |
1803 | if (!strcmp(var, "record.aio")) { | |
1804 | rec->opts.nr_cblocks = strtol(value, NULL, 0); | |
1805 | if (!rec->opts.nr_cblocks) | |
1806 | rec->opts.nr_cblocks = nr_cblocks_default; | |
1807 | } | |
1808 | #endif | |
eb853e80 | 1809 | |
cff17205 | 1810 | return 0; |
eb853e80 JO |
1811 | } |
1812 | ||
814c8c38 PZ |
1813 | struct clockid_map { |
1814 | const char *name; | |
1815 | int clockid; | |
1816 | }; | |
1817 | ||
1818 | #define CLOCKID_MAP(n, c) \ | |
1819 | { .name = n, .clockid = (c), } | |
1820 | ||
1821 | #define CLOCKID_END { .name = NULL, } | |
1822 | ||
1823 | ||
1824 | /* | |
1825 | * Add the missing ones, we need to build on many distros... | |
1826 | */ | |
1827 | #ifndef CLOCK_MONOTONIC_RAW | |
1828 | #define CLOCK_MONOTONIC_RAW 4 | |
1829 | #endif | |
1830 | #ifndef CLOCK_BOOTTIME | |
1831 | #define CLOCK_BOOTTIME 7 | |
1832 | #endif | |
1833 | #ifndef CLOCK_TAI | |
1834 | #define CLOCK_TAI 11 | |
1835 | #endif | |
1836 | ||
1837 | static const struct clockid_map clockids[] = { | |
1838 | /* available for all events, NMI safe */ | |
1839 | CLOCKID_MAP("monotonic", CLOCK_MONOTONIC), | |
1840 | CLOCKID_MAP("monotonic_raw", CLOCK_MONOTONIC_RAW), | |
1841 | ||
1842 | /* available for some events */ | |
1843 | CLOCKID_MAP("realtime", CLOCK_REALTIME), | |
1844 | CLOCKID_MAP("boottime", CLOCK_BOOTTIME), | |
1845 | CLOCKID_MAP("tai", CLOCK_TAI), | |
1846 | ||
1847 | /* available for the lazy */ | |
1848 | CLOCKID_MAP("mono", CLOCK_MONOTONIC), | |
1849 | CLOCKID_MAP("raw", CLOCK_MONOTONIC_RAW), | |
1850 | CLOCKID_MAP("real", CLOCK_REALTIME), | |
1851 | CLOCKID_MAP("boot", CLOCK_BOOTTIME), | |
1852 | ||
1853 | CLOCKID_END, | |
1854 | }; | |
1855 | ||
cf790516 AB |
1856 | static int get_clockid_res(clockid_t clk_id, u64 *res_ns) |
1857 | { | |
1858 | struct timespec res; | |
1859 | ||
1860 | *res_ns = 0; | |
1861 | if (!clock_getres(clk_id, &res)) | |
1862 | *res_ns = res.tv_nsec + res.tv_sec * NSEC_PER_SEC; | |
1863 | else | |
1864 | pr_warning("WARNING: Failed to determine specified clock resolution.\n"); | |
1865 | ||
1866 | return 0; | |
1867 | } | |
1868 | ||
814c8c38 PZ |
1869 | static int parse_clockid(const struct option *opt, const char *str, int unset) |
1870 | { | |
1871 | struct record_opts *opts = (struct record_opts *)opt->value; | |
1872 | const struct clockid_map *cm; | |
1873 | const char *ostr = str; | |
1874 | ||
1875 | if (unset) { | |
1876 | opts->use_clockid = 0; | |
1877 | return 0; | |
1878 | } | |
1879 | ||
1880 | /* no arg passed */ | |
1881 | if (!str) | |
1882 | return 0; | |
1883 | ||
1884 | /* no setting it twice */ | |
1885 | if (opts->use_clockid) | |
1886 | return -1; | |
1887 | ||
1888 | opts->use_clockid = true; | |
1889 | ||
1890 | /* if its a number, we're done */ | |
1891 | if (sscanf(str, "%d", &opts->clockid) == 1) | |
cf790516 | 1892 | return get_clockid_res(opts->clockid, &opts->clockid_res_ns); |
814c8c38 PZ |
1893 | |
1894 | /* allow a "CLOCK_" prefix to the name */ | |
1895 | if (!strncasecmp(str, "CLOCK_", 6)) | |
1896 | str += 6; | |
1897 | ||
1898 | for (cm = clockids; cm->name; cm++) { | |
1899 | if (!strcasecmp(str, cm->name)) { | |
1900 | opts->clockid = cm->clockid; | |
cf790516 AB |
1901 | return get_clockid_res(opts->clockid, |
1902 | &opts->clockid_res_ns); | |
814c8c38 PZ |
1903 | } |
1904 | } | |
1905 | ||
1906 | opts->use_clockid = false; | |
1907 | ui__warning("unknown clockid %s, check man page\n", ostr); | |
1908 | return -1; | |
1909 | } | |
1910 | ||
f4fe11b7 AB |
1911 | static int record__parse_affinity(const struct option *opt, const char *str, int unset) |
1912 | { | |
1913 | struct record_opts *opts = (struct record_opts *)opt->value; | |
1914 | ||
1915 | if (unset || !str) | |
1916 | return 0; | |
1917 | ||
1918 | if (!strcasecmp(str, "node")) | |
1919 | opts->affinity = PERF_AFFINITY_NODE; | |
1920 | else if (!strcasecmp(str, "cpu")) | |
1921 | opts->affinity = PERF_AFFINITY_CPU; | |
1922 | ||
1923 | return 0; | |
1924 | } | |
1925 | ||
e9db1310 AH |
1926 | static int record__parse_mmap_pages(const struct option *opt, |
1927 | const char *str, | |
1928 | int unset __maybe_unused) | |
1929 | { | |
1930 | struct record_opts *opts = opt->value; | |
1931 | char *s, *p; | |
1932 | unsigned int mmap_pages; | |
1933 | int ret; | |
1934 | ||
1935 | if (!str) | |
1936 | return -EINVAL; | |
1937 | ||
1938 | s = strdup(str); | |
1939 | if (!s) | |
1940 | return -ENOMEM; | |
1941 | ||
1942 | p = strchr(s, ','); | |
1943 | if (p) | |
1944 | *p = '\0'; | |
1945 | ||
1946 | if (*s) { | |
1947 | ret = __perf_evlist__parse_mmap_pages(&mmap_pages, s); | |
1948 | if (ret) | |
1949 | goto out_free; | |
1950 | opts->mmap_pages = mmap_pages; | |
1951 | } | |
1952 | ||
1953 | if (!p) { | |
1954 | ret = 0; | |
1955 | goto out_free; | |
1956 | } | |
1957 | ||
1958 | ret = __perf_evlist__parse_mmap_pages(&mmap_pages, p + 1); | |
1959 | if (ret) | |
1960 | goto out_free; | |
1961 | ||
1962 | opts->auxtrace_mmap_pages = mmap_pages; | |
1963 | ||
1964 | out_free: | |
1965 | free(s); | |
1966 | return ret; | |
1967 | } | |
1968 | ||
0c582449 JO |
1969 | static void switch_output_size_warn(struct record *rec) |
1970 | { | |
1971 | u64 wakeup_size = perf_evlist__mmap_size(rec->opts.mmap_pages); | |
1972 | struct switch_output *s = &rec->switch_output; | |
1973 | ||
1974 | wakeup_size /= 2; | |
1975 | ||
1976 | if (s->size < wakeup_size) { | |
1977 | char buf[100]; | |
1978 | ||
1979 | unit_number__scnprintf(buf, sizeof(buf), wakeup_size); | |
1980 | pr_warning("WARNING: switch-output data size lower than " | |
1981 | "wakeup kernel buffer size (%s) " | |
1982 | "expect bigger perf.data sizes\n", buf); | |
1983 | } | |
1984 | } | |
1985 | ||
cb4e1ebb JO |
1986 | static int switch_output_setup(struct record *rec) |
1987 | { | |
1988 | struct switch_output *s = &rec->switch_output; | |
dc0c6127 JO |
1989 | static struct parse_tag tags_size[] = { |
1990 | { .tag = 'B', .mult = 1 }, | |
1991 | { .tag = 'K', .mult = 1 << 10 }, | |
1992 | { .tag = 'M', .mult = 1 << 20 }, | |
1993 | { .tag = 'G', .mult = 1 << 30 }, | |
1994 | { .tag = 0 }, | |
1995 | }; | |
bfacbe3b JO |
1996 | static struct parse_tag tags_time[] = { |
1997 | { .tag = 's', .mult = 1 }, | |
1998 | { .tag = 'm', .mult = 60 }, | |
1999 | { .tag = 'h', .mult = 60*60 }, | |
2000 | { .tag = 'd', .mult = 60*60*24 }, | |
2001 | { .tag = 0 }, | |
2002 | }; | |
dc0c6127 | 2003 | unsigned long val; |
cb4e1ebb JO |
2004 | |
2005 | if (!s->set) | |
2006 | return 0; | |
2007 | ||
2008 | if (!strcmp(s->str, "signal")) { | |
2009 | s->signal = true; | |
2010 | pr_debug("switch-output with SIGUSR2 signal\n"); | |
dc0c6127 JO |
2011 | goto enabled; |
2012 | } | |
2013 | ||
2014 | val = parse_tag_value(s->str, tags_size); | |
2015 | if (val != (unsigned long) -1) { | |
2016 | s->size = val; | |
2017 | pr_debug("switch-output with %s size threshold\n", s->str); | |
2018 | goto enabled; | |
cb4e1ebb JO |
2019 | } |
2020 | ||
bfacbe3b JO |
2021 | val = parse_tag_value(s->str, tags_time); |
2022 | if (val != (unsigned long) -1) { | |
2023 | s->time = val; | |
2024 | pr_debug("switch-output with %s time threshold (%lu seconds)\n", | |
2025 | s->str, s->time); | |
2026 | goto enabled; | |
2027 | } | |
2028 | ||
cb4e1ebb | 2029 | return -1; |
dc0c6127 JO |
2030 | |
2031 | enabled: | |
2032 | rec->timestamp_filename = true; | |
2033 | s->enabled = true; | |
0c582449 JO |
2034 | |
2035 | if (s->size && !rec->opts.no_buffering) | |
2036 | switch_output_size_warn(rec); | |
2037 | ||
dc0c6127 | 2038 | return 0; |
cb4e1ebb JO |
2039 | } |
2040 | ||
e5b2c207 | 2041 | static const char * const __record_usage[] = { |
9e096753 MG |
2042 | "perf record [<options>] [<command>]", |
2043 | "perf record [<options>] -- <command> [<options>]", | |
0e9b20b8 IM |
2044 | NULL |
2045 | }; | |
e5b2c207 | 2046 | const char * const *record_usage = __record_usage; |
0e9b20b8 | 2047 | |
d20deb64 | 2048 | /* |
8c6f45a7 ACM |
2049 | * XXX Ideally would be local to cmd_record() and passed to a record__new |
2050 | * because we need to have access to it in record__exit, that is called | |
d20deb64 ACM |
2051 | * after cmd_record() exits, but since record_options need to be accessible to |
2052 | * builtin-script, leave it here. | |
2053 | * | |
2054 | * At least we don't ouch it in all the other functions here directly. | |
2055 | * | |
2056 | * Just say no to tons of global variables, sigh. | |
2057 | */ | |
8c6f45a7 | 2058 | static struct record record = { |
d20deb64 | 2059 | .opts = { |
8affc2b8 | 2060 | .sample_time = true, |
d20deb64 ACM |
2061 | .mmap_pages = UINT_MAX, |
2062 | .user_freq = UINT_MAX, | |
2063 | .user_interval = ULLONG_MAX, | |
447a6013 | 2064 | .freq = 4000, |
d1cb9fce NK |
2065 | .target = { |
2066 | .uses_mmap = true, | |
3aa5939d | 2067 | .default_per_cpu = true, |
d1cb9fce | 2068 | }, |
470530bb | 2069 | .mmap_flush = MMAP_FLUSH_DEFAULT, |
d20deb64 | 2070 | }, |
e3d59112 NK |
2071 | .tool = { |
2072 | .sample = process_sample_event, | |
2073 | .fork = perf_event__process_fork, | |
cca8482c | 2074 | .exit = perf_event__process_exit, |
e3d59112 | 2075 | .comm = perf_event__process_comm, |
f3b3614a | 2076 | .namespaces = perf_event__process_namespaces, |
e3d59112 NK |
2077 | .mmap = perf_event__process_mmap, |
2078 | .mmap2 = perf_event__process_mmap2, | |
cca8482c | 2079 | .ordered_events = true, |
e3d59112 | 2080 | }, |
d20deb64 | 2081 | }; |
7865e817 | 2082 | |
76a26549 NK |
2083 | const char record_callchain_help[] = CALLCHAIN_RECORD_HELP |
2084 | "\n\t\t\t\tDefault: fp"; | |
61eaa3be | 2085 | |
0aab2136 WN |
2086 | static bool dry_run; |
2087 | ||
d20deb64 ACM |
2088 | /* |
2089 | * XXX Will stay a global variable till we fix builtin-script.c to stop messing | |
2090 | * with it and switch to use the library functions in perf_evlist that came | |
b4006796 | 2091 | * from builtin-record.c, i.e. use record_opts, |
d20deb64 ACM |
2092 | * perf_evlist__prepare_workload, etc instead of fork+exec'in 'perf record', |
2093 | * using pipes, etc. | |
2094 | */ | |
efd21307 | 2095 | static struct option __record_options[] = { |
d20deb64 | 2096 | OPT_CALLBACK('e', "event", &record.evlist, "event", |
86847b62 | 2097 | "event selector. use 'perf list' to list available events", |
f120f9d5 | 2098 | parse_events_option), |
d20deb64 | 2099 | OPT_CALLBACK(0, "filter", &record.evlist, "filter", |
c171b552 | 2100 | "event filter", parse_filter), |
4ba1faa1 WN |
2101 | OPT_CALLBACK_NOOPT(0, "exclude-perf", &record.evlist, |
2102 | NULL, "don't record events from perf itself", | |
2103 | exclude_perf), | |
bea03405 | 2104 | OPT_STRING('p', "pid", &record.opts.target.pid, "pid", |
d6d901c2 | 2105 | "record events on existing process id"), |
bea03405 | 2106 | OPT_STRING('t', "tid", &record.opts.target.tid, "tid", |
d6d901c2 | 2107 | "record events on existing thread id"), |
d20deb64 | 2108 | OPT_INTEGER('r', "realtime", &record.realtime_prio, |
0e9b20b8 | 2109 | "collect data with this RT SCHED_FIFO priority"), |
509051ea | 2110 | OPT_BOOLEAN(0, "no-buffering", &record.opts.no_buffering, |
acac03fa | 2111 | "collect data without buffering"), |
d20deb64 | 2112 | OPT_BOOLEAN('R', "raw-samples", &record.opts.raw_samples, |
daac07b2 | 2113 | "collect raw sample records from all opened counters"), |
bea03405 | 2114 | OPT_BOOLEAN('a', "all-cpus", &record.opts.target.system_wide, |
0e9b20b8 | 2115 | "system-wide collection from all CPUs"), |
bea03405 | 2116 | OPT_STRING('C', "cpu", &record.opts.target.cpu_list, "cpu", |
c45c6ea2 | 2117 | "list of cpus to monitor"), |
d20deb64 | 2118 | OPT_U64('c', "count", &record.opts.user_interval, "event period to sample"), |
2d4f2799 | 2119 | OPT_STRING('o', "output", &record.data.path, "file", |
abaff32a | 2120 | "output file name"), |
69e7e5b0 AH |
2121 | OPT_BOOLEAN_SET('i', "no-inherit", &record.opts.no_inherit, |
2122 | &record.opts.no_inherit_set, | |
2123 | "child tasks do not inherit counters"), | |
4ea648ae WN |
2124 | OPT_BOOLEAN(0, "tail-synthesize", &record.opts.tail_synthesize, |
2125 | "synthesize non-sample events at the end of output"), | |
626a6b78 | 2126 | OPT_BOOLEAN(0, "overwrite", &record.opts.overwrite, "use overwrite mode"), |
71184c6a | 2127 | OPT_BOOLEAN(0, "no-bpf-event", &record.opts.no_bpf_event, "record bpf events"), |
b09c2364 ACM |
2128 | OPT_BOOLEAN(0, "strict-freq", &record.opts.strict_freq, |
2129 | "Fail if the specified frequency can't be used"), | |
67230479 ACM |
2130 | OPT_CALLBACK('F', "freq", &record.opts, "freq or 'max'", |
2131 | "profile at this frequency", | |
2132 | record__parse_freq), | |
e9db1310 AH |
2133 | OPT_CALLBACK('m', "mmap-pages", &record.opts, "pages[,pages]", |
2134 | "number of mmap data pages and AUX area tracing mmap pages", | |
2135 | record__parse_mmap_pages), | |
470530bb AB |
2136 | OPT_CALLBACK(0, "mmap-flush", &record.opts, "number", |
2137 | "Minimal number of bytes that is extracted from mmap data pages (default: 1)", | |
2138 | record__mmap_flush_parse), | |
d20deb64 | 2139 | OPT_BOOLEAN(0, "group", &record.opts.group, |
43bece79 | 2140 | "put the counters into a counter group"), |
2ddd5c04 | 2141 | OPT_CALLBACK_NOOPT('g', NULL, &callchain_param, |
09b0fd45 JO |
2142 | NULL, "enables call-graph recording" , |
2143 | &record_callchain_opt), | |
2144 | OPT_CALLBACK(0, "call-graph", &record.opts, | |
76a26549 | 2145 | "record_mode[,record_size]", record_callchain_help, |
09b0fd45 | 2146 | &record_parse_callchain_opt), |
c0555642 | 2147 | OPT_INCR('v', "verbose", &verbose, |
3da297a6 | 2148 | "be more verbose (show counter open errors, etc)"), |
b44308f5 | 2149 | OPT_BOOLEAN('q', "quiet", &quiet, "don't print any message"), |
d20deb64 | 2150 | OPT_BOOLEAN('s', "stat", &record.opts.inherit_stat, |
649c48a9 | 2151 | "per thread counts"), |
56100321 | 2152 | OPT_BOOLEAN('d', "data", &record.opts.sample_address, "Record the sample addresses"), |
3b0a5daa KL |
2153 | OPT_BOOLEAN(0, "phys-data", &record.opts.sample_phys_addr, |
2154 | "Record the sample physical addresses"), | |
b6f35ed7 | 2155 | OPT_BOOLEAN(0, "sample-cpu", &record.opts.sample_cpu, "Record the sample cpu"), |
3abebc55 AH |
2156 | OPT_BOOLEAN_SET('T', "timestamp", &record.opts.sample_time, |
2157 | &record.opts.sample_time_set, | |
2158 | "Record the sample timestamps"), | |
f290aa1f JO |
2159 | OPT_BOOLEAN_SET('P', "period", &record.opts.period, &record.opts.period_set, |
2160 | "Record the sample period"), | |
d20deb64 | 2161 | OPT_BOOLEAN('n', "no-samples", &record.opts.no_samples, |
649c48a9 | 2162 | "don't sample"), |
d2db9a98 WN |
2163 | OPT_BOOLEAN_SET('N', "no-buildid-cache", &record.no_buildid_cache, |
2164 | &record.no_buildid_cache_set, | |
2165 | "do not update the buildid cache"), | |
2166 | OPT_BOOLEAN_SET('B', "no-buildid", &record.no_buildid, | |
2167 | &record.no_buildid_set, | |
2168 | "do not collect buildids in perf.data"), | |
d20deb64 | 2169 | OPT_CALLBACK('G', "cgroup", &record.evlist, "name", |
023695d9 SE |
2170 | "monitor event in cgroup name only", |
2171 | parse_cgroups), | |
a6205a35 | 2172 | OPT_UINTEGER('D', "delay", &record.opts.initial_delay, |
6619a53e | 2173 | "ms to wait before starting measurement after program start"), |
bea03405 NK |
2174 | OPT_STRING('u', "uid", &record.opts.target.uid_str, "user", |
2175 | "user to profile"), | |
a5aabdac SE |
2176 | |
2177 | OPT_CALLBACK_NOOPT('b', "branch-any", &record.opts.branch_stack, | |
2178 | "branch any", "sample any taken branches", | |
2179 | parse_branch_stack), | |
2180 | ||
2181 | OPT_CALLBACK('j', "branch-filter", &record.opts.branch_stack, | |
2182 | "branch filter mask", "branch stack filter modes", | |
bdfebd84 | 2183 | parse_branch_stack), |
05484298 AK |
2184 | OPT_BOOLEAN('W', "weight", &record.opts.sample_weight, |
2185 | "sample by weight (on special events only)"), | |
475eeab9 AK |
2186 | OPT_BOOLEAN(0, "transaction", &record.opts.sample_transaction, |
2187 | "sample transaction flags (special events only)"), | |
3aa5939d AH |
2188 | OPT_BOOLEAN(0, "per-thread", &record.opts.target.per_thread, |
2189 | "use per-thread mmaps"), | |
bcc84ec6 SE |
2190 | OPT_CALLBACK_OPTARG('I', "intr-regs", &record.opts.sample_intr_regs, NULL, "any register", |
2191 | "sample selected machine registers on interrupt," | |
aeea9062 | 2192 | " use '-I?' to list register names", parse_intr_regs), |
84c41742 AK |
2193 | OPT_CALLBACK_OPTARG(0, "user-regs", &record.opts.sample_user_regs, NULL, "any register", |
2194 | "sample selected machine registers on interrupt," | |
aeea9062 | 2195 | " use '--user-regs=?' to list register names", parse_user_regs), |
85c273d2 AK |
2196 | OPT_BOOLEAN(0, "running-time", &record.opts.running_time, |
2197 | "Record running/enabled time of read (:S) events"), | |
814c8c38 PZ |
2198 | OPT_CALLBACK('k', "clockid", &record.opts, |
2199 | "clockid", "clockid to use for events, see clock_gettime()", | |
2200 | parse_clockid), | |
2dd6d8a1 AH |
2201 | OPT_STRING_OPTARG('S', "snapshot", &record.opts.auxtrace_snapshot_opts, |
2202 | "opts", "AUX area tracing Snapshot Mode", ""), | |
3fcb10e4 | 2203 | OPT_UINTEGER(0, "proc-map-timeout", &proc_map_timeout, |
9d9cad76 | 2204 | "per thread proc mmap processing timeout in ms"), |
f3b3614a HB |
2205 | OPT_BOOLEAN(0, "namespaces", &record.opts.record_namespaces, |
2206 | "Record namespaces events"), | |
b757bb09 AH |
2207 | OPT_BOOLEAN(0, "switch-events", &record.opts.record_switch_events, |
2208 | "Record context switch events"), | |
85723885 JO |
2209 | OPT_BOOLEAN_FLAG(0, "all-kernel", &record.opts.all_kernel, |
2210 | "Configure all used events to run in kernel space.", | |
2211 | PARSE_OPT_EXCLUSIVE), | |
2212 | OPT_BOOLEAN_FLAG(0, "all-user", &record.opts.all_user, | |
2213 | "Configure all used events to run in user space.", | |
2214 | PARSE_OPT_EXCLUSIVE), | |
53651b28 | 2215 | OPT_BOOLEAN(0, "kernel-callchains", &record.opts.kernel_callchains, |
2216 | "collect kernel callchains"), | |
2217 | OPT_BOOLEAN(0, "user-callchains", &record.opts.user_callchains, | |
2218 | "collect user callchains"), | |
71dc2326 WN |
2219 | OPT_STRING(0, "clang-path", &llvm_param.clang_path, "clang path", |
2220 | "clang binary to use for compiling BPF scriptlets"), | |
2221 | OPT_STRING(0, "clang-opt", &llvm_param.clang_opt, "clang options", | |
2222 | "options passed to clang when compiling BPF scriptlets"), | |
7efe0e03 HK |
2223 | OPT_STRING(0, "vmlinux", &symbol_conf.vmlinux_name, |
2224 | "file", "vmlinux pathname"), | |
6156681b NK |
2225 | OPT_BOOLEAN(0, "buildid-all", &record.buildid_all, |
2226 | "Record build-id of all DSOs regardless of hits"), | |
ecfd7a9c WN |
2227 | OPT_BOOLEAN(0, "timestamp-filename", &record.timestamp_filename, |
2228 | "append timestamp to output filename"), | |
68588baf JY |
2229 | OPT_BOOLEAN(0, "timestamp-boundary", &record.timestamp_boundary, |
2230 | "Record timestamp boundary (time of first/last samples)"), | |
cb4e1ebb | 2231 | OPT_STRING_OPTARG_SET(0, "switch-output", &record.switch_output.str, |
c38dab7d AK |
2232 | &record.switch_output.set, "signal or size[BKMG] or time[smhd]", |
2233 | "Switch output when receiving SIGUSR2 (signal) or cross a size or time threshold", | |
dc0c6127 | 2234 | "signal"), |
03724b2e AK |
2235 | OPT_INTEGER(0, "switch-max-files", &record.switch_output.num_files, |
2236 | "Limit number of switch output generated files"), | |
0aab2136 WN |
2237 | OPT_BOOLEAN(0, "dry-run", &dry_run, |
2238 | "Parse options then exit"), | |
d3d1af6f | 2239 | #ifdef HAVE_AIO_SUPPORT |
93f20c0f AB |
2240 | OPT_CALLBACK_OPTARG(0, "aio", &record.opts, |
2241 | &nr_cblocks_default, "n", "Use <n> control blocks in asynchronous trace writing mode (default: 1, max: 4)", | |
d3d1af6f AB |
2242 | record__aio_parse), |
2243 | #endif | |
f4fe11b7 AB |
2244 | OPT_CALLBACK(0, "affinity", &record.opts, "node|cpu", |
2245 | "Set affinity mask of trace reading thread to NUMA node cpu mask or cpu of processed mmap buffer", | |
2246 | record__parse_affinity), | |
504c1ad1 AB |
2247 | #ifdef HAVE_ZSTD_SUPPORT |
2248 | OPT_CALLBACK_OPTARG('z', "compression-level", &record.opts, &comp_level_default, | |
2249 | "n", "Compressed records using specified level (default: 1 - fastest compression, 22 - greatest compression)", | |
2250 | record__parse_comp_level), | |
2251 | #endif | |
0e9b20b8 IM |
2252 | OPT_END() |
2253 | }; | |
2254 | ||
e5b2c207 NK |
2255 | struct option *record_options = __record_options; |
2256 | ||
b0ad8ea6 | 2257 | int cmd_record(int argc, const char **argv) |
0e9b20b8 | 2258 | { |
ef149c25 | 2259 | int err; |
8c6f45a7 | 2260 | struct record *rec = &record; |
16ad2ffb | 2261 | char errbuf[BUFSIZ]; |
0e9b20b8 | 2262 | |
67230479 ACM |
2263 | setlocale(LC_ALL, ""); |
2264 | ||
48e1cab1 WN |
2265 | #ifndef HAVE_LIBBPF_SUPPORT |
2266 | # define set_nobuild(s, l, c) set_option_nobuild(record_options, s, l, "NO_LIBBPF=1", c) | |
2267 | set_nobuild('\0', "clang-path", true); | |
2268 | set_nobuild('\0', "clang-opt", true); | |
2269 | # undef set_nobuild | |
7efe0e03 HK |
2270 | #endif |
2271 | ||
2272 | #ifndef HAVE_BPF_PROLOGUE | |
2273 | # if !defined (HAVE_DWARF_SUPPORT) | |
2274 | # define REASON "NO_DWARF=1" | |
2275 | # elif !defined (HAVE_LIBBPF_SUPPORT) | |
2276 | # define REASON "NO_LIBBPF=1" | |
2277 | # else | |
2278 | # define REASON "this architecture doesn't support BPF prologue" | |
2279 | # endif | |
2280 | # define set_nobuild(s, l, c) set_option_nobuild(record_options, s, l, REASON, c) | |
2281 | set_nobuild('\0', "vmlinux", true); | |
2282 | # undef set_nobuild | |
2283 | # undef REASON | |
48e1cab1 WN |
2284 | #endif |
2285 | ||
9d2ed645 AB |
2286 | CPU_ZERO(&rec->affinity_mask); |
2287 | rec->opts.affinity = PERF_AFFINITY_SYS; | |
2288 | ||
0f98b11c | 2289 | rec->evlist = evlist__new(); |
3e2be2da | 2290 | if (rec->evlist == NULL) |
361c99a6 ACM |
2291 | return -ENOMEM; |
2292 | ||
ecc4c561 ACM |
2293 | err = perf_config(perf_record_config, rec); |
2294 | if (err) | |
2295 | return err; | |
eb853e80 | 2296 | |
bca647aa | 2297 | argc = parse_options(argc, argv, record_options, record_usage, |
655000e7 | 2298 | PARSE_OPT_STOP_AT_NON_OPTION); |
68ba3235 NK |
2299 | if (quiet) |
2300 | perf_quiet_option(); | |
483635a9 JO |
2301 | |
2302 | /* Make system wide (-a) the default target. */ | |
602ad878 | 2303 | if (!argc && target__none(&rec->opts.target)) |
483635a9 | 2304 | rec->opts.target.system_wide = true; |
0e9b20b8 | 2305 | |
bea03405 | 2306 | if (nr_cgroups && !rec->opts.target.system_wide) { |
c7118369 NK |
2307 | usage_with_options_msg(record_usage, record_options, |
2308 | "cgroup monitoring only available in system-wide mode"); | |
2309 | ||
023695d9 | 2310 | } |
504c1ad1 AB |
2311 | |
2312 | if (rec->opts.comp_level != 0) { | |
2313 | pr_debug("Compression enabled, disabling build id collection at the end of the session.\n"); | |
2314 | rec->no_buildid = true; | |
2315 | } | |
2316 | ||
b757bb09 AH |
2317 | if (rec->opts.record_switch_events && |
2318 | !perf_can_record_switch_events()) { | |
c7118369 NK |
2319 | ui__error("kernel does not support recording context switch events\n"); |
2320 | parse_options_usage(record_usage, record_options, "switch-events", 0); | |
2321 | return -EINVAL; | |
b757bb09 | 2322 | } |
023695d9 | 2323 | |
cb4e1ebb JO |
2324 | if (switch_output_setup(rec)) { |
2325 | parse_options_usage(record_usage, record_options, "switch-output", 0); | |
2326 | return -EINVAL; | |
2327 | } | |
2328 | ||
bfacbe3b JO |
2329 | if (rec->switch_output.time) { |
2330 | signal(SIGALRM, alarm_sig_handler); | |
2331 | alarm(rec->switch_output.time); | |
2332 | } | |
2333 | ||
03724b2e AK |
2334 | if (rec->switch_output.num_files) { |
2335 | rec->switch_output.filenames = calloc(sizeof(char *), | |
2336 | rec->switch_output.num_files); | |
2337 | if (!rec->switch_output.filenames) | |
2338 | return -EINVAL; | |
2339 | } | |
2340 | ||
1b36c03e AH |
2341 | /* |
2342 | * Allow aliases to facilitate the lookup of symbols for address | |
2343 | * filters. Refer to auxtrace_parse_filters(). | |
2344 | */ | |
2345 | symbol_conf.allow_aliases = true; | |
2346 | ||
2347 | symbol__init(NULL); | |
2348 | ||
4b5ea3bd | 2349 | err = record__auxtrace_init(rec); |
1b36c03e AH |
2350 | if (err) |
2351 | goto out; | |
2352 | ||
0aab2136 | 2353 | if (dry_run) |
5c01ad60 | 2354 | goto out; |
0aab2136 | 2355 | |
d7888573 WN |
2356 | err = bpf__setup_stdout(rec->evlist); |
2357 | if (err) { | |
2358 | bpf__strerror_setup_stdout(rec->evlist, err, errbuf, sizeof(errbuf)); | |
2359 | pr_err("ERROR: Setup BPF stdout failed: %s\n", | |
2360 | errbuf); | |
5c01ad60 | 2361 | goto out; |
d7888573 WN |
2362 | } |
2363 | ||
ef149c25 AH |
2364 | err = -ENOMEM; |
2365 | ||
6c443954 | 2366 | if (symbol_conf.kptr_restrict && !perf_evlist__exclude_kernel(rec->evlist)) |
646aaea6 ACM |
2367 | pr_warning( |
2368 | "WARNING: Kernel address maps (/proc/{kallsyms,modules}) are restricted,\n" | |
d06e5fad | 2369 | "check /proc/sys/kernel/kptr_restrict and /proc/sys/kernel/perf_event_paranoid.\n\n" |
646aaea6 ACM |
2370 | "Samples in kernel functions may not be resolved if a suitable vmlinux\n" |
2371 | "file is not found in the buildid cache or in the vmlinux path.\n\n" | |
2372 | "Samples in kernel modules won't be resolved at all.\n\n" | |
2373 | "If some relocation was applied (e.g. kexec) symbols may be misresolved\n" | |
2374 | "even with a suitable vmlinux or kallsyms file.\n\n"); | |
ec80fde7 | 2375 | |
0c1d46a8 | 2376 | if (rec->no_buildid_cache || rec->no_buildid) { |
a1ac1d3c | 2377 | disable_buildid_cache(); |
dc0c6127 | 2378 | } else if (rec->switch_output.enabled) { |
0c1d46a8 WN |
2379 | /* |
2380 | * In 'perf record --switch-output', disable buildid | |
2381 | * generation by default to reduce data file switching | |
2382 | * overhead. Still generate buildid if they are required | |
2383 | * explicitly using | |
2384 | * | |
60437ac0 | 2385 | * perf record --switch-output --no-no-buildid \ |
0c1d46a8 WN |
2386 | * --no-no-buildid-cache |
2387 | * | |
2388 | * Following code equals to: | |
2389 | * | |
2390 | * if ((rec->no_buildid || !rec->no_buildid_set) && | |
2391 | * (rec->no_buildid_cache || !rec->no_buildid_cache_set)) | |
2392 | * disable_buildid_cache(); | |
2393 | */ | |
2394 | bool disable = true; | |
2395 | ||
2396 | if (rec->no_buildid_set && !rec->no_buildid) | |
2397 | disable = false; | |
2398 | if (rec->no_buildid_cache_set && !rec->no_buildid_cache) | |
2399 | disable = false; | |
2400 | if (disable) { | |
2401 | rec->no_buildid = true; | |
2402 | rec->no_buildid_cache = true; | |
2403 | disable_buildid_cache(); | |
2404 | } | |
2405 | } | |
655000e7 | 2406 | |
4ea648ae WN |
2407 | if (record.opts.overwrite) |
2408 | record.opts.tail_synthesize = true; | |
2409 | ||
6484d2f9 | 2410 | if (rec->evlist->core.nr_entries == 0 && |
4b4cd503 | 2411 | __perf_evlist__add_default(rec->evlist, !record.opts.no_samples) < 0) { |
69aad6f1 | 2412 | pr_err("Not enough memory for event selector list\n"); |
394c01ed | 2413 | goto out; |
bbd36e5e | 2414 | } |
0e9b20b8 | 2415 | |
69e7e5b0 AH |
2416 | if (rec->opts.target.tid && !rec->opts.no_inherit_set) |
2417 | rec->opts.no_inherit = true; | |
2418 | ||
602ad878 | 2419 | err = target__validate(&rec->opts.target); |
16ad2ffb | 2420 | if (err) { |
602ad878 | 2421 | target__strerror(&rec->opts.target, err, errbuf, BUFSIZ); |
c3dec27b | 2422 | ui__warning("%s\n", errbuf); |
16ad2ffb NK |
2423 | } |
2424 | ||
602ad878 | 2425 | err = target__parse_uid(&rec->opts.target); |
16ad2ffb NK |
2426 | if (err) { |
2427 | int saved_errno = errno; | |
4bd0f2d2 | 2428 | |
602ad878 | 2429 | target__strerror(&rec->opts.target, err, errbuf, BUFSIZ); |
3780f488 | 2430 | ui__error("%s", errbuf); |
16ad2ffb NK |
2431 | |
2432 | err = -saved_errno; | |
394c01ed | 2433 | goto out; |
16ad2ffb | 2434 | } |
0d37aa34 | 2435 | |
ca800068 MZ |
2436 | /* Enable ignoring missing threads when -u/-p option is defined. */ |
2437 | rec->opts.ignore_missing_thread = rec->opts.target.uid != UINT_MAX || rec->opts.target.pid; | |
23dc4f15 | 2438 | |
16ad2ffb | 2439 | err = -ENOMEM; |
3e2be2da | 2440 | if (perf_evlist__create_maps(rec->evlist, &rec->opts.target) < 0) |
dd7927f4 | 2441 | usage_with_options(record_usage, record_options); |
69aad6f1 | 2442 | |
ef149c25 AH |
2443 | err = auxtrace_record__options(rec->itr, rec->evlist, &rec->opts); |
2444 | if (err) | |
394c01ed | 2445 | goto out; |
ef149c25 | 2446 | |
6156681b NK |
2447 | /* |
2448 | * We take all buildids when the file contains | |
2449 | * AUX area tracing data because we do not decode the | |
2450 | * trace because it would take too long. | |
2451 | */ | |
2452 | if (rec->opts.full_auxtrace) | |
2453 | rec->buildid_all = true; | |
2454 | ||
b4006796 | 2455 | if (record_opts__config(&rec->opts)) { |
39d17dac | 2456 | err = -EINVAL; |
394c01ed | 2457 | goto out; |
7e4ff9e3 MG |
2458 | } |
2459 | ||
93f20c0f AB |
2460 | if (rec->opts.nr_cblocks > nr_cblocks_max) |
2461 | rec->opts.nr_cblocks = nr_cblocks_max; | |
5d7f4116 | 2462 | pr_debug("nr_cblocks: %d\n", rec->opts.nr_cblocks); |
d3d1af6f | 2463 | |
9d2ed645 | 2464 | pr_debug("affinity: %s\n", affinity_tags[rec->opts.affinity]); |
470530bb | 2465 | pr_debug("mmap flush: %d\n", rec->opts.mmap_flush); |
9d2ed645 | 2466 | |
51255a8a AB |
2467 | if (rec->opts.comp_level > comp_level_max) |
2468 | rec->opts.comp_level = comp_level_max; | |
2469 | pr_debug("comp level: %d\n", rec->opts.comp_level); | |
2470 | ||
d20deb64 | 2471 | err = __cmd_record(&record, argc, argv); |
394c01ed | 2472 | out: |
c12995a5 | 2473 | evlist__delete(rec->evlist); |
d65a458b | 2474 | symbol__exit(); |
ef149c25 | 2475 | auxtrace_record__free(rec->itr); |
39d17dac | 2476 | return err; |
0e9b20b8 | 2477 | } |
2dd6d8a1 AH |
2478 | |
2479 | static void snapshot_sig_handler(int sig __maybe_unused) | |
2480 | { | |
dc0c6127 JO |
2481 | struct record *rec = &record; |
2482 | ||
5f9cf599 WN |
2483 | if (trigger_is_ready(&auxtrace_snapshot_trigger)) { |
2484 | trigger_hit(&auxtrace_snapshot_trigger); | |
2485 | auxtrace_record__snapshot_started = 1; | |
2486 | if (auxtrace_record__snapshot_start(record.itr)) | |
2487 | trigger_error(&auxtrace_snapshot_trigger); | |
2488 | } | |
3c1cb7e3 | 2489 | |
dc0c6127 | 2490 | if (switch_output_signal(rec)) |
3c1cb7e3 | 2491 | trigger_hit(&switch_output_trigger); |
2dd6d8a1 | 2492 | } |
bfacbe3b JO |
2493 | |
2494 | static void alarm_sig_handler(int sig __maybe_unused) | |
2495 | { | |
2496 | struct record *rec = &record; | |
2497 | ||
2498 | if (switch_output_time(rec)) | |
2499 | trigger_hit(&switch_output_trigger); | |
2500 | } |