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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" |
e0fcfb08 | 23 | #include "util/mmap.h" |
aeb00b1a | 24 | #include "util/target.h" |
94c744b6 | 25 | #include "util/session.h" |
45694aa7 | 26 | #include "util/tool.h" |
8d06367f | 27 | #include "util/symbol.h" |
aeb00b1a | 28 | #include "util/record.h" |
a12b51c4 | 29 | #include "util/cpumap.h" |
fd78260b | 30 | #include "util/thread_map.h" |
f5fc1412 | 31 | #include "util/data.h" |
bcc84ec6 | 32 | #include "util/perf_regs.h" |
ef149c25 | 33 | #include "util/auxtrace.h" |
46bc29b9 | 34 | #include "util/tsc.h" |
f00898f4 | 35 | #include "util/parse-branch-options.h" |
bcc84ec6 | 36 | #include "util/parse-regs-options.h" |
71dc2326 | 37 | #include "util/llvm-utils.h" |
8690a2a7 | 38 | #include "util/bpf-loader.h" |
5f9cf599 | 39 | #include "util/trigger.h" |
a074865e | 40 | #include "util/perf-hooks.h" |
f13de660 | 41 | #include "util/cpu-set-sched.h" |
ea49e01c | 42 | #include "util/synthetic-events.h" |
c5e4027e | 43 | #include "util/time-utils.h" |
58db1d6e | 44 | #include "util/units.h" |
7b612e29 | 45 | #include "util/bpf-event.h" |
d8871ea7 | 46 | #include "asm/bug.h" |
c1a604df | 47 | #include "perf.h" |
7c6a1c65 | 48 | |
a43783ae | 49 | #include <errno.h> |
fd20e811 | 50 | #include <inttypes.h> |
67230479 | 51 | #include <locale.h> |
4208735d | 52 | #include <poll.h> |
97124d5e | 53 | #include <unistd.h> |
de9ac07b | 54 | #include <sched.h> |
9607ad3a | 55 | #include <signal.h> |
a41794cd | 56 | #include <sys/mman.h> |
4208735d | 57 | #include <sys/wait.h> |
6ef81c55 | 58 | #include <linux/err.h> |
8520a98d | 59 | #include <linux/string.h> |
0693e680 | 60 | #include <linux/time64.h> |
d8f9da24 | 61 | #include <linux/zalloc.h> |
78da39fa | 62 | |
1b43b704 | 63 | struct switch_output { |
dc0c6127 | 64 | bool enabled; |
1b43b704 | 65 | bool signal; |
dc0c6127 | 66 | unsigned long size; |
bfacbe3b | 67 | unsigned long time; |
cb4e1ebb JO |
68 | const char *str; |
69 | bool set; | |
03724b2e AK |
70 | char **filenames; |
71 | int num_files; | |
72 | int cur_file; | |
1b43b704 JO |
73 | }; |
74 | ||
8c6f45a7 | 75 | struct record { |
45694aa7 | 76 | struct perf_tool tool; |
b4006796 | 77 | struct record_opts opts; |
d20deb64 | 78 | u64 bytes_written; |
8ceb41d7 | 79 | struct perf_data data; |
ef149c25 | 80 | struct auxtrace_record *itr; |
63503dba | 81 | struct evlist *evlist; |
d20deb64 | 82 | struct perf_session *session; |
d20deb64 | 83 | int realtime_prio; |
d20deb64 | 84 | bool no_buildid; |
d2db9a98 | 85 | bool no_buildid_set; |
d20deb64 | 86 | bool no_buildid_cache; |
d2db9a98 | 87 | bool no_buildid_cache_set; |
6156681b | 88 | bool buildid_all; |
ecfd7a9c | 89 | bool timestamp_filename; |
68588baf | 90 | bool timestamp_boundary; |
1b43b704 | 91 | struct switch_output switch_output; |
9f065194 | 92 | unsigned long long samples; |
9d2ed645 | 93 | cpu_set_t affinity_mask; |
0f82ebc4 | 94 | }; |
a21ca2ca | 95 | |
dc0c6127 JO |
96 | static volatile int auxtrace_record__snapshot_started; |
97 | static DEFINE_TRIGGER(auxtrace_snapshot_trigger); | |
98 | static DEFINE_TRIGGER(switch_output_trigger); | |
99 | ||
9d2ed645 AB |
100 | static const char *affinity_tags[PERF_AFFINITY_MAX] = { |
101 | "SYS", "NODE", "CPU" | |
102 | }; | |
103 | ||
dc0c6127 JO |
104 | static bool switch_output_signal(struct record *rec) |
105 | { | |
106 | return rec->switch_output.signal && | |
107 | trigger_is_ready(&switch_output_trigger); | |
108 | } | |
109 | ||
110 | static bool switch_output_size(struct record *rec) | |
111 | { | |
112 | return rec->switch_output.size && | |
113 | trigger_is_ready(&switch_output_trigger) && | |
114 | (rec->bytes_written >= rec->switch_output.size); | |
115 | } | |
116 | ||
bfacbe3b JO |
117 | static bool switch_output_time(struct record *rec) |
118 | { | |
119 | return rec->switch_output.time && | |
120 | trigger_is_ready(&switch_output_trigger); | |
121 | } | |
122 | ||
a5830532 | 123 | static int record__write(struct record *rec, struct mmap *map __maybe_unused, |
ded2b8fe | 124 | void *bf, size_t size) |
f5970550 | 125 | { |
ded2b8fe JO |
126 | struct perf_data_file *file = &rec->session->data->file; |
127 | ||
128 | if (perf_data_file__write(file, bf, size) < 0) { | |
50a9b868 JO |
129 | pr_err("failed to write perf data, error: %m\n"); |
130 | return -1; | |
f5970550 | 131 | } |
8d3eca20 | 132 | |
cf8b2e69 | 133 | rec->bytes_written += size; |
dc0c6127 JO |
134 | |
135 | if (switch_output_size(rec)) | |
136 | trigger_hit(&switch_output_trigger); | |
137 | ||
8d3eca20 | 138 | return 0; |
f5970550 PZ |
139 | } |
140 | ||
ef781128 AB |
141 | static int record__aio_enabled(struct record *rec); |
142 | static int record__comp_enabled(struct record *rec); | |
5d7f4116 AB |
143 | static size_t zstd_compress(struct perf_session *session, void *dst, size_t dst_size, |
144 | void *src, size_t src_size); | |
145 | ||
d3d1af6f AB |
146 | #ifdef HAVE_AIO_SUPPORT |
147 | static int record__aio_write(struct aiocb *cblock, int trace_fd, | |
148 | void *buf, size_t size, off_t off) | |
149 | { | |
150 | int rc; | |
151 | ||
152 | cblock->aio_fildes = trace_fd; | |
153 | cblock->aio_buf = buf; | |
154 | cblock->aio_nbytes = size; | |
155 | cblock->aio_offset = off; | |
156 | cblock->aio_sigevent.sigev_notify = SIGEV_NONE; | |
157 | ||
158 | do { | |
159 | rc = aio_write(cblock); | |
160 | if (rc == 0) { | |
161 | break; | |
162 | } else if (errno != EAGAIN) { | |
163 | cblock->aio_fildes = -1; | |
164 | pr_err("failed to queue perf data, error: %m\n"); | |
165 | break; | |
166 | } | |
167 | } while (1); | |
168 | ||
169 | return rc; | |
170 | } | |
171 | ||
a5830532 | 172 | static int record__aio_complete(struct mmap *md, struct aiocb *cblock) |
d3d1af6f AB |
173 | { |
174 | void *rem_buf; | |
175 | off_t rem_off; | |
176 | size_t rem_size; | |
177 | int rc, aio_errno; | |
178 | ssize_t aio_ret, written; | |
179 | ||
180 | aio_errno = aio_error(cblock); | |
181 | if (aio_errno == EINPROGRESS) | |
182 | return 0; | |
183 | ||
184 | written = aio_ret = aio_return(cblock); | |
185 | if (aio_ret < 0) { | |
186 | if (aio_errno != EINTR) | |
187 | pr_err("failed to write perf data, error: %m\n"); | |
188 | written = 0; | |
189 | } | |
190 | ||
191 | rem_size = cblock->aio_nbytes - written; | |
192 | ||
193 | if (rem_size == 0) { | |
194 | cblock->aio_fildes = -1; | |
195 | /* | |
ef781128 AB |
196 | * md->refcount is incremented in record__aio_pushfn() for |
197 | * every aio write request started in record__aio_push() so | |
198 | * decrement it because the request is now complete. | |
d3d1af6f AB |
199 | */ |
200 | perf_mmap__put(md); | |
201 | rc = 1; | |
202 | } else { | |
203 | /* | |
204 | * aio write request may require restart with the | |
205 | * reminder if the kernel didn't write whole | |
206 | * chunk at once. | |
207 | */ | |
208 | rem_off = cblock->aio_offset + written; | |
209 | rem_buf = (void *)(cblock->aio_buf + written); | |
210 | record__aio_write(cblock, cblock->aio_fildes, | |
211 | rem_buf, rem_size, rem_off); | |
212 | rc = 0; | |
213 | } | |
214 | ||
215 | return rc; | |
216 | } | |
217 | ||
a5830532 | 218 | static int record__aio_sync(struct mmap *md, bool sync_all) |
d3d1af6f | 219 | { |
93f20c0f AB |
220 | struct aiocb **aiocb = md->aio.aiocb; |
221 | struct aiocb *cblocks = md->aio.cblocks; | |
d3d1af6f | 222 | struct timespec timeout = { 0, 1000 * 1000 * 1 }; /* 1ms */ |
93f20c0f | 223 | int i, do_suspend; |
d3d1af6f AB |
224 | |
225 | do { | |
93f20c0f AB |
226 | do_suspend = 0; |
227 | for (i = 0; i < md->aio.nr_cblocks; ++i) { | |
228 | if (cblocks[i].aio_fildes == -1 || record__aio_complete(md, &cblocks[i])) { | |
229 | if (sync_all) | |
230 | aiocb[i] = NULL; | |
231 | else | |
232 | return i; | |
233 | } else { | |
234 | /* | |
235 | * Started aio write is not complete yet | |
236 | * so it has to be waited before the | |
237 | * next allocation. | |
238 | */ | |
239 | aiocb[i] = &cblocks[i]; | |
240 | do_suspend = 1; | |
241 | } | |
242 | } | |
243 | if (!do_suspend) | |
244 | return -1; | |
d3d1af6f | 245 | |
93f20c0f | 246 | while (aio_suspend((const struct aiocb **)aiocb, md->aio.nr_cblocks, &timeout)) { |
d3d1af6f AB |
247 | if (!(errno == EAGAIN || errno == EINTR)) |
248 | pr_err("failed to sync perf data, error: %m\n"); | |
249 | } | |
250 | } while (1); | |
251 | } | |
252 | ||
ef781128 AB |
253 | struct record_aio { |
254 | struct record *rec; | |
255 | void *data; | |
256 | size_t size; | |
257 | }; | |
258 | ||
a5830532 | 259 | static int record__aio_pushfn(struct mmap *map, void *to, void *buf, size_t size) |
d3d1af6f | 260 | { |
ef781128 | 261 | struct record_aio *aio = to; |
d3d1af6f | 262 | |
ef781128 AB |
263 | /* |
264 | * map->base data pointed by buf is copied into free map->aio.data[] buffer | |
265 | * to release space in the kernel buffer as fast as possible, calling | |
266 | * perf_mmap__consume() from perf_mmap__push() function. | |
267 | * | |
268 | * That lets the kernel to proceed with storing more profiling data into | |
269 | * the kernel buffer earlier than other per-cpu kernel buffers are handled. | |
270 | * | |
271 | * Coping can be done in two steps in case the chunk of profiling data | |
272 | * crosses the upper bound of the kernel buffer. In this case we first move | |
273 | * part of data from map->start till the upper bound and then the reminder | |
274 | * from the beginning of the kernel buffer till the end of the data chunk. | |
275 | */ | |
276 | ||
277 | if (record__comp_enabled(aio->rec)) { | |
278 | size = zstd_compress(aio->rec->session, aio->data + aio->size, | |
279 | perf_mmap__mmap_len(map) - aio->size, | |
280 | buf, size); | |
281 | } else { | |
282 | memcpy(aio->data + aio->size, buf, size); | |
283 | } | |
284 | ||
285 | if (!aio->size) { | |
286 | /* | |
287 | * Increment map->refcount to guard map->aio.data[] buffer | |
288 | * from premature deallocation because map object can be | |
289 | * released earlier than aio write request started on | |
290 | * map->aio.data[] buffer is complete. | |
291 | * | |
292 | * perf_mmap__put() is done at record__aio_complete() | |
293 | * after started aio request completion or at record__aio_push() | |
294 | * if the request failed to start. | |
295 | */ | |
296 | perf_mmap__get(map); | |
297 | } | |
298 | ||
299 | aio->size += size; | |
300 | ||
301 | return size; | |
302 | } | |
303 | ||
a5830532 | 304 | static int record__aio_push(struct record *rec, struct mmap *map, off_t *off) |
ef781128 AB |
305 | { |
306 | int ret, idx; | |
307 | int trace_fd = rec->session->data->file.fd; | |
308 | struct record_aio aio = { .rec = rec, .size = 0 }; | |
d3d1af6f | 309 | |
ef781128 AB |
310 | /* |
311 | * Call record__aio_sync() to wait till map->aio.data[] buffer | |
312 | * becomes available after previous aio write operation. | |
313 | */ | |
314 | ||
315 | idx = record__aio_sync(map, false); | |
316 | aio.data = map->aio.data[idx]; | |
317 | ret = perf_mmap__push(map, &aio, record__aio_pushfn); | |
318 | if (ret != 0) /* ret > 0 - no data, ret < 0 - error */ | |
319 | return ret; | |
320 | ||
321 | rec->samples++; | |
322 | ret = record__aio_write(&(map->aio.cblocks[idx]), trace_fd, aio.data, aio.size, *off); | |
d3d1af6f | 323 | if (!ret) { |
ef781128 AB |
324 | *off += aio.size; |
325 | rec->bytes_written += aio.size; | |
d3d1af6f AB |
326 | if (switch_output_size(rec)) |
327 | trigger_hit(&switch_output_trigger); | |
ef781128 AB |
328 | } else { |
329 | /* | |
330 | * Decrement map->refcount incremented in record__aio_pushfn() | |
331 | * back if record__aio_write() operation failed to start, otherwise | |
332 | * map->refcount is decremented in record__aio_complete() after | |
333 | * aio write operation finishes successfully. | |
334 | */ | |
335 | perf_mmap__put(map); | |
d3d1af6f AB |
336 | } |
337 | ||
338 | return ret; | |
339 | } | |
340 | ||
341 | static off_t record__aio_get_pos(int trace_fd) | |
342 | { | |
343 | return lseek(trace_fd, 0, SEEK_CUR); | |
344 | } | |
345 | ||
346 | static void record__aio_set_pos(int trace_fd, off_t pos) | |
347 | { | |
348 | lseek(trace_fd, pos, SEEK_SET); | |
349 | } | |
350 | ||
351 | static void record__aio_mmap_read_sync(struct record *rec) | |
352 | { | |
353 | int i; | |
63503dba | 354 | struct evlist *evlist = rec->evlist; |
a5830532 | 355 | struct mmap *maps = evlist->mmap; |
d3d1af6f | 356 | |
ef781128 | 357 | if (!record__aio_enabled(rec)) |
d3d1af6f AB |
358 | return; |
359 | ||
360 | for (i = 0; i < evlist->nr_mmaps; i++) { | |
a5830532 | 361 | struct mmap *map = &maps[i]; |
d3d1af6f AB |
362 | |
363 | if (map->base) | |
93f20c0f | 364 | record__aio_sync(map, true); |
d3d1af6f AB |
365 | } |
366 | } | |
367 | ||
368 | static int nr_cblocks_default = 1; | |
93f20c0f | 369 | static int nr_cblocks_max = 4; |
d3d1af6f AB |
370 | |
371 | static int record__aio_parse(const struct option *opt, | |
93f20c0f | 372 | const char *str, |
d3d1af6f AB |
373 | int unset) |
374 | { | |
375 | struct record_opts *opts = (struct record_opts *)opt->value; | |
376 | ||
93f20c0f | 377 | if (unset) { |
d3d1af6f | 378 | opts->nr_cblocks = 0; |
93f20c0f AB |
379 | } else { |
380 | if (str) | |
381 | opts->nr_cblocks = strtol(str, NULL, 0); | |
382 | if (!opts->nr_cblocks) | |
383 | opts->nr_cblocks = nr_cblocks_default; | |
384 | } | |
d3d1af6f AB |
385 | |
386 | return 0; | |
387 | } | |
388 | #else /* HAVE_AIO_SUPPORT */ | |
93f20c0f AB |
389 | static int nr_cblocks_max = 0; |
390 | ||
a5830532 | 391 | static int record__aio_push(struct record *rec __maybe_unused, struct mmap *map __maybe_unused, |
ef781128 | 392 | off_t *off __maybe_unused) |
d3d1af6f AB |
393 | { |
394 | return -1; | |
395 | } | |
396 | ||
397 | static off_t record__aio_get_pos(int trace_fd __maybe_unused) | |
398 | { | |
399 | return -1; | |
400 | } | |
401 | ||
402 | static void record__aio_set_pos(int trace_fd __maybe_unused, off_t pos __maybe_unused) | |
403 | { | |
404 | } | |
405 | ||
406 | static void record__aio_mmap_read_sync(struct record *rec __maybe_unused) | |
407 | { | |
408 | } | |
409 | #endif | |
410 | ||
411 | static int record__aio_enabled(struct record *rec) | |
412 | { | |
413 | return rec->opts.nr_cblocks > 0; | |
414 | } | |
415 | ||
470530bb AB |
416 | #define MMAP_FLUSH_DEFAULT 1 |
417 | static int record__mmap_flush_parse(const struct option *opt, | |
418 | const char *str, | |
419 | int unset) | |
420 | { | |
421 | int flush_max; | |
422 | struct record_opts *opts = (struct record_opts *)opt->value; | |
423 | static struct parse_tag tags[] = { | |
424 | { .tag = 'B', .mult = 1 }, | |
425 | { .tag = 'K', .mult = 1 << 10 }, | |
426 | { .tag = 'M', .mult = 1 << 20 }, | |
427 | { .tag = 'G', .mult = 1 << 30 }, | |
428 | { .tag = 0 }, | |
429 | }; | |
430 | ||
431 | if (unset) | |
432 | return 0; | |
433 | ||
434 | if (str) { | |
435 | opts->mmap_flush = parse_tag_value(str, tags); | |
436 | if (opts->mmap_flush == (int)-1) | |
437 | opts->mmap_flush = strtol(str, NULL, 0); | |
438 | } | |
439 | ||
440 | if (!opts->mmap_flush) | |
441 | opts->mmap_flush = MMAP_FLUSH_DEFAULT; | |
442 | ||
9521b5f2 | 443 | flush_max = evlist__mmap_size(opts->mmap_pages); |
470530bb AB |
444 | flush_max /= 4; |
445 | if (opts->mmap_flush > flush_max) | |
446 | opts->mmap_flush = flush_max; | |
447 | ||
448 | return 0; | |
449 | } | |
450 | ||
504c1ad1 AB |
451 | #ifdef HAVE_ZSTD_SUPPORT |
452 | static unsigned int comp_level_default = 1; | |
453 | ||
454 | static int record__parse_comp_level(const struct option *opt, const char *str, int unset) | |
455 | { | |
456 | struct record_opts *opts = opt->value; | |
457 | ||
458 | if (unset) { | |
459 | opts->comp_level = 0; | |
460 | } else { | |
461 | if (str) | |
462 | opts->comp_level = strtol(str, NULL, 0); | |
463 | if (!opts->comp_level) | |
464 | opts->comp_level = comp_level_default; | |
465 | } | |
466 | ||
467 | return 0; | |
468 | } | |
469 | #endif | |
51255a8a AB |
470 | static unsigned int comp_level_max = 22; |
471 | ||
42e1fd80 AB |
472 | static int record__comp_enabled(struct record *rec) |
473 | { | |
474 | return rec->opts.comp_level > 0; | |
475 | } | |
476 | ||
45694aa7 | 477 | static int process_synthesized_event(struct perf_tool *tool, |
d20deb64 | 478 | union perf_event *event, |
1d037ca1 IT |
479 | struct perf_sample *sample __maybe_unused, |
480 | struct machine *machine __maybe_unused) | |
234fbbf5 | 481 | { |
8c6f45a7 | 482 | struct record *rec = container_of(tool, struct record, tool); |
ded2b8fe | 483 | return record__write(rec, NULL, event, event->header.size); |
234fbbf5 ACM |
484 | } |
485 | ||
a5830532 | 486 | static int record__pushfn(struct mmap *map, void *to, void *bf, size_t size) |
d37f1586 ACM |
487 | { |
488 | struct record *rec = to; | |
489 | ||
5d7f4116 AB |
490 | if (record__comp_enabled(rec)) { |
491 | size = zstd_compress(rec->session, map->data, perf_mmap__mmap_len(map), bf, size); | |
492 | bf = map->data; | |
493 | } | |
494 | ||
d37f1586 | 495 | rec->samples++; |
ded2b8fe | 496 | return record__write(rec, map, bf, size); |
d37f1586 ACM |
497 | } |
498 | ||
2dd6d8a1 AH |
499 | static volatile int done; |
500 | static volatile int signr = -1; | |
501 | static volatile int child_finished; | |
c0bdc1c4 | 502 | |
2dd6d8a1 AH |
503 | static void sig_handler(int sig) |
504 | { | |
505 | if (sig == SIGCHLD) | |
506 | child_finished = 1; | |
507 | else | |
508 | signr = sig; | |
509 | ||
510 | done = 1; | |
511 | } | |
512 | ||
a074865e WN |
513 | static void sigsegv_handler(int sig) |
514 | { | |
515 | perf_hooks__recover(); | |
516 | sighandler_dump_stack(sig); | |
517 | } | |
518 | ||
2dd6d8a1 AH |
519 | static void record__sig_exit(void) |
520 | { | |
521 | if (signr == -1) | |
522 | return; | |
523 | ||
524 | signal(signr, SIG_DFL); | |
525 | raise(signr); | |
526 | } | |
527 | ||
e31f0d01 AH |
528 | #ifdef HAVE_AUXTRACE_SUPPORT |
529 | ||
ef149c25 | 530 | static int record__process_auxtrace(struct perf_tool *tool, |
a5830532 | 531 | struct mmap *map, |
ef149c25 AH |
532 | union perf_event *event, void *data1, |
533 | size_t len1, void *data2, size_t len2) | |
534 | { | |
535 | struct record *rec = container_of(tool, struct record, tool); | |
8ceb41d7 | 536 | struct perf_data *data = &rec->data; |
ef149c25 AH |
537 | size_t padding; |
538 | u8 pad[8] = {0}; | |
539 | ||
cd3dd8dd | 540 | if (!perf_data__is_pipe(data) && !perf_data__is_dir(data)) { |
99fa2984 | 541 | off_t file_offset; |
8ceb41d7 | 542 | int fd = perf_data__fd(data); |
99fa2984 AH |
543 | int err; |
544 | ||
545 | file_offset = lseek(fd, 0, SEEK_CUR); | |
546 | if (file_offset == -1) | |
547 | return -1; | |
548 | err = auxtrace_index__auxtrace_event(&rec->session->auxtrace_index, | |
549 | event, file_offset); | |
550 | if (err) | |
551 | return err; | |
552 | } | |
553 | ||
ef149c25 AH |
554 | /* event.auxtrace.size includes padding, see __auxtrace_mmap__read() */ |
555 | padding = (len1 + len2) & 7; | |
556 | if (padding) | |
557 | padding = 8 - padding; | |
558 | ||
ded2b8fe JO |
559 | record__write(rec, map, event, event->header.size); |
560 | record__write(rec, map, data1, len1); | |
ef149c25 | 561 | if (len2) |
ded2b8fe JO |
562 | record__write(rec, map, data2, len2); |
563 | record__write(rec, map, &pad, padding); | |
ef149c25 AH |
564 | |
565 | return 0; | |
566 | } | |
567 | ||
568 | static int record__auxtrace_mmap_read(struct record *rec, | |
a5830532 | 569 | struct mmap *map) |
ef149c25 AH |
570 | { |
571 | int ret; | |
572 | ||
e035f4ca | 573 | ret = auxtrace_mmap__read(map, rec->itr, &rec->tool, |
ef149c25 AH |
574 | record__process_auxtrace); |
575 | if (ret < 0) | |
576 | return ret; | |
577 | ||
578 | if (ret) | |
579 | rec->samples++; | |
580 | ||
581 | return 0; | |
582 | } | |
583 | ||
2dd6d8a1 | 584 | static int record__auxtrace_mmap_read_snapshot(struct record *rec, |
a5830532 | 585 | struct mmap *map) |
2dd6d8a1 AH |
586 | { |
587 | int ret; | |
588 | ||
e035f4ca | 589 | ret = auxtrace_mmap__read_snapshot(map, rec->itr, &rec->tool, |
2dd6d8a1 AH |
590 | record__process_auxtrace, |
591 | rec->opts.auxtrace_snapshot_size); | |
592 | if (ret < 0) | |
593 | return ret; | |
594 | ||
595 | if (ret) | |
596 | rec->samples++; | |
597 | ||
598 | return 0; | |
599 | } | |
600 | ||
601 | static int record__auxtrace_read_snapshot_all(struct record *rec) | |
602 | { | |
603 | int i; | |
604 | int rc = 0; | |
605 | ||
606 | for (i = 0; i < rec->evlist->nr_mmaps; i++) { | |
a5830532 | 607 | struct mmap *map = &rec->evlist->mmap[i]; |
2dd6d8a1 | 608 | |
e035f4ca | 609 | if (!map->auxtrace_mmap.base) |
2dd6d8a1 AH |
610 | continue; |
611 | ||
e035f4ca | 612 | if (record__auxtrace_mmap_read_snapshot(rec, map) != 0) { |
2dd6d8a1 AH |
613 | rc = -1; |
614 | goto out; | |
615 | } | |
616 | } | |
617 | out: | |
618 | return rc; | |
619 | } | |
620 | ||
ce7b0e42 | 621 | static void record__read_auxtrace_snapshot(struct record *rec, bool on_exit) |
2dd6d8a1 AH |
622 | { |
623 | pr_debug("Recording AUX area tracing snapshot\n"); | |
624 | if (record__auxtrace_read_snapshot_all(rec) < 0) { | |
5f9cf599 | 625 | trigger_error(&auxtrace_snapshot_trigger); |
2dd6d8a1 | 626 | } else { |
ce7b0e42 | 627 | if (auxtrace_record__snapshot_finish(rec->itr, on_exit)) |
5f9cf599 WN |
628 | trigger_error(&auxtrace_snapshot_trigger); |
629 | else | |
630 | trigger_ready(&auxtrace_snapshot_trigger); | |
2dd6d8a1 AH |
631 | } |
632 | } | |
633 | ||
ce7b0e42 AS |
634 | static int record__auxtrace_snapshot_exit(struct record *rec) |
635 | { | |
636 | if (trigger_is_error(&auxtrace_snapshot_trigger)) | |
637 | return 0; | |
638 | ||
639 | if (!auxtrace_record__snapshot_started && | |
640 | auxtrace_record__snapshot_start(rec->itr)) | |
641 | return -1; | |
642 | ||
643 | record__read_auxtrace_snapshot(rec, true); | |
644 | if (trigger_is_error(&auxtrace_snapshot_trigger)) | |
645 | return -1; | |
646 | ||
647 | return 0; | |
648 | } | |
649 | ||
4b5ea3bd AH |
650 | static int record__auxtrace_init(struct record *rec) |
651 | { | |
652 | int err; | |
653 | ||
654 | if (!rec->itr) { | |
655 | rec->itr = auxtrace_record__init(rec->evlist, &err); | |
656 | if (err) | |
657 | return err; | |
658 | } | |
659 | ||
660 | err = auxtrace_parse_snapshot_options(rec->itr, &rec->opts, | |
661 | rec->opts.auxtrace_snapshot_opts); | |
662 | if (err) | |
663 | return err; | |
664 | ||
665 | return auxtrace_parse_filters(rec->evlist); | |
666 | } | |
667 | ||
e31f0d01 AH |
668 | #else |
669 | ||
670 | static inline | |
671 | int record__auxtrace_mmap_read(struct record *rec __maybe_unused, | |
a5830532 | 672 | struct mmap *map __maybe_unused) |
e31f0d01 AH |
673 | { |
674 | return 0; | |
675 | } | |
676 | ||
2dd6d8a1 | 677 | static inline |
ce7b0e42 AS |
678 | void record__read_auxtrace_snapshot(struct record *rec __maybe_unused, |
679 | bool on_exit __maybe_unused) | |
de9ac07b | 680 | { |
f7b7c26e PZ |
681 | } |
682 | ||
2dd6d8a1 AH |
683 | static inline |
684 | int auxtrace_record__snapshot_start(struct auxtrace_record *itr __maybe_unused) | |
f7b7c26e | 685 | { |
2dd6d8a1 | 686 | return 0; |
de9ac07b PZ |
687 | } |
688 | ||
ce7b0e42 AS |
689 | static inline |
690 | int record__auxtrace_snapshot_exit(struct record *rec __maybe_unused) | |
691 | { | |
692 | return 0; | |
693 | } | |
694 | ||
4b5ea3bd AH |
695 | static int record__auxtrace_init(struct record *rec __maybe_unused) |
696 | { | |
697 | return 0; | |
698 | } | |
699 | ||
2dd6d8a1 AH |
700 | #endif |
701 | ||
cda57a8c | 702 | static int record__mmap_evlist(struct record *rec, |
63503dba | 703 | struct evlist *evlist) |
cda57a8c WN |
704 | { |
705 | struct record_opts *opts = &rec->opts; | |
706 | char msg[512]; | |
707 | ||
f13de660 AB |
708 | if (opts->affinity != PERF_AFFINITY_SYS) |
709 | cpu__setup_cpunode_map(); | |
710 | ||
9521b5f2 | 711 | if (evlist__mmap_ex(evlist, opts->mmap_pages, |
cda57a8c | 712 | opts->auxtrace_mmap_pages, |
9d2ed645 | 713 | opts->auxtrace_snapshot_mode, |
470530bb | 714 | opts->nr_cblocks, opts->affinity, |
51255a8a | 715 | opts->mmap_flush, opts->comp_level) < 0) { |
cda57a8c WN |
716 | if (errno == EPERM) { |
717 | pr_err("Permission error mapping pages.\n" | |
718 | "Consider increasing " | |
719 | "/proc/sys/kernel/perf_event_mlock_kb,\n" | |
720 | "or try again with a smaller value of -m/--mmap_pages.\n" | |
721 | "(current value: %u,%u)\n", | |
722 | opts->mmap_pages, opts->auxtrace_mmap_pages); | |
723 | return -errno; | |
724 | } else { | |
725 | pr_err("failed to mmap with %d (%s)\n", errno, | |
c8b5f2c9 | 726 | str_error_r(errno, msg, sizeof(msg))); |
cda57a8c WN |
727 | if (errno) |
728 | return -errno; | |
729 | else | |
730 | return -EINVAL; | |
731 | } | |
732 | } | |
733 | return 0; | |
734 | } | |
735 | ||
736 | static int record__mmap(struct record *rec) | |
737 | { | |
738 | return record__mmap_evlist(rec, rec->evlist); | |
739 | } | |
740 | ||
8c6f45a7 | 741 | static int record__open(struct record *rec) |
dd7927f4 | 742 | { |
d6195a6a | 743 | char msg[BUFSIZ]; |
32dcd021 | 744 | struct evsel *pos; |
63503dba | 745 | struct evlist *evlist = rec->evlist; |
d20deb64 | 746 | struct perf_session *session = rec->session; |
b4006796 | 747 | struct record_opts *opts = &rec->opts; |
8d3eca20 | 748 | int rc = 0; |
dd7927f4 | 749 | |
d3dbf43c ACM |
750 | /* |
751 | * For initial_delay we need to add a dummy event so that we can track | |
752 | * PERF_RECORD_MMAP while we wait for the initial delay to enable the | |
753 | * real events, the ones asked by the user. | |
754 | */ | |
755 | if (opts->initial_delay) { | |
756 | if (perf_evlist__add_dummy(evlist)) | |
757 | return -ENOMEM; | |
758 | ||
759 | pos = perf_evlist__first(evlist); | |
760 | pos->tracking = 0; | |
761 | pos = perf_evlist__last(evlist); | |
762 | pos->tracking = 1; | |
1fc632ce | 763 | pos->core.attr.enable_on_exec = 1; |
d3dbf43c ACM |
764 | } |
765 | ||
e68ae9cf | 766 | perf_evlist__config(evlist, opts, &callchain_param); |
cac21425 | 767 | |
e5cadb93 | 768 | evlist__for_each_entry(evlist, pos) { |
dd7927f4 | 769 | try_again: |
af663bd0 | 770 | if (evsel__open(pos, pos->core.cpus, pos->core.threads) < 0) { |
56e52e85 | 771 | if (perf_evsel__fallback(pos, errno, msg, sizeof(msg))) { |
bb963e16 | 772 | if (verbose > 0) |
c0a54341 | 773 | ui__warning("%s\n", msg); |
d6d901c2 ZY |
774 | goto try_again; |
775 | } | |
cf99ad14 AK |
776 | if ((errno == EINVAL || errno == EBADF) && |
777 | pos->leader != pos && | |
778 | pos->weak_group) { | |
779 | pos = perf_evlist__reset_weak_group(evlist, pos); | |
780 | goto try_again; | |
781 | } | |
56e52e85 ACM |
782 | rc = -errno; |
783 | perf_evsel__open_strerror(pos, &opts->target, | |
784 | errno, msg, sizeof(msg)); | |
785 | ui__error("%s\n", msg); | |
8d3eca20 | 786 | goto out; |
c171b552 | 787 | } |
bfd8f72c AK |
788 | |
789 | pos->supported = true; | |
c171b552 | 790 | } |
a43d3f08 | 791 | |
c8b567c8 ACM |
792 | if (symbol_conf.kptr_restrict && !perf_evlist__exclude_kernel(evlist)) { |
793 | pr_warning( | |
794 | "WARNING: Kernel address maps (/proc/{kallsyms,modules}) are restricted,\n" | |
795 | "check /proc/sys/kernel/kptr_restrict and /proc/sys/kernel/perf_event_paranoid.\n\n" | |
796 | "Samples in kernel functions may not be resolved if a suitable vmlinux\n" | |
797 | "file is not found in the buildid cache or in the vmlinux path.\n\n" | |
798 | "Samples in kernel modules won't be resolved at all.\n\n" | |
799 | "If some relocation was applied (e.g. kexec) symbols may be misresolved\n" | |
800 | "even with a suitable vmlinux or kallsyms file.\n\n"); | |
801 | } | |
802 | ||
23d4aad4 | 803 | if (perf_evlist__apply_filters(evlist, &pos)) { |
62d94b00 | 804 | pr_err("failed to set filter \"%s\" on event %s with %d (%s)\n", |
23d4aad4 | 805 | pos->filter, perf_evsel__name(pos), errno, |
c8b5f2c9 | 806 | str_error_r(errno, msg, sizeof(msg))); |
8d3eca20 | 807 | rc = -1; |
5d8bb1ec MP |
808 | goto out; |
809 | } | |
810 | ||
cda57a8c WN |
811 | rc = record__mmap(rec); |
812 | if (rc) | |
8d3eca20 | 813 | goto out; |
0a27d7f9 | 814 | |
563aecb2 | 815 | session->evlist = evlist; |
7b56cce2 | 816 | perf_session__set_id_hdr_size(session); |
8d3eca20 DA |
817 | out: |
818 | return rc; | |
16c8a109 PZ |
819 | } |
820 | ||
e3d59112 NK |
821 | static int process_sample_event(struct perf_tool *tool, |
822 | union perf_event *event, | |
823 | struct perf_sample *sample, | |
32dcd021 | 824 | struct evsel *evsel, |
e3d59112 NK |
825 | struct machine *machine) |
826 | { | |
827 | struct record *rec = container_of(tool, struct record, tool); | |
828 | ||
68588baf JY |
829 | if (rec->evlist->first_sample_time == 0) |
830 | rec->evlist->first_sample_time = sample->time; | |
831 | ||
832 | rec->evlist->last_sample_time = sample->time; | |
e3d59112 | 833 | |
68588baf JY |
834 | if (rec->buildid_all) |
835 | return 0; | |
836 | ||
837 | rec->samples++; | |
e3d59112 NK |
838 | return build_id__mark_dso_hit(tool, event, sample, evsel, machine); |
839 | } | |
840 | ||
8c6f45a7 | 841 | static int process_buildids(struct record *rec) |
6122e4e4 | 842 | { |
f5fc1412 | 843 | struct perf_session *session = rec->session; |
6122e4e4 | 844 | |
45112e89 | 845 | if (perf_data__size(&rec->data) == 0) |
9f591fd7 ACM |
846 | return 0; |
847 | ||
00dc8657 NK |
848 | /* |
849 | * During this process, it'll load kernel map and replace the | |
850 | * dso->long_name to a real pathname it found. In this case | |
851 | * we prefer the vmlinux path like | |
852 | * /lib/modules/3.16.4/build/vmlinux | |
853 | * | |
854 | * rather than build-id path (in debug directory). | |
855 | * $HOME/.debug/.build-id/f0/6e17aa50adf4d00b88925e03775de107611551 | |
856 | */ | |
857 | symbol_conf.ignore_vmlinux_buildid = true; | |
858 | ||
6156681b NK |
859 | /* |
860 | * If --buildid-all is given, it marks all DSO regardless of hits, | |
68588baf JY |
861 | * so no need to process samples. But if timestamp_boundary is enabled, |
862 | * it still needs to walk on all samples to get the timestamps of | |
863 | * first/last samples. | |
6156681b | 864 | */ |
68588baf | 865 | if (rec->buildid_all && !rec->timestamp_boundary) |
6156681b NK |
866 | rec->tool.sample = NULL; |
867 | ||
b7b61cbe | 868 | return perf_session__process_events(session); |
6122e4e4 ACM |
869 | } |
870 | ||
8115d60c | 871 | static void perf_event__synthesize_guest_os(struct machine *machine, void *data) |
a1645ce1 ZY |
872 | { |
873 | int err; | |
45694aa7 | 874 | struct perf_tool *tool = data; |
a1645ce1 ZY |
875 | /* |
876 | *As for guest kernel when processing subcommand record&report, | |
877 | *we arrange module mmap prior to guest kernel mmap and trigger | |
878 | *a preload dso because default guest module symbols are loaded | |
879 | *from guest kallsyms instead of /lib/modules/XXX/XXX. This | |
880 | *method is used to avoid symbol missing when the first addr is | |
881 | *in module instead of in guest kernel. | |
882 | */ | |
45694aa7 | 883 | err = perf_event__synthesize_modules(tool, process_synthesized_event, |
743eb868 | 884 | machine); |
a1645ce1 ZY |
885 | if (err < 0) |
886 | pr_err("Couldn't record guest kernel [%d]'s reference" | |
23346f21 | 887 | " relocation symbol.\n", machine->pid); |
a1645ce1 | 888 | |
a1645ce1 ZY |
889 | /* |
890 | * We use _stext for guest kernel because guest kernel's /proc/kallsyms | |
891 | * have no _text sometimes. | |
892 | */ | |
45694aa7 | 893 | err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event, |
0ae617be | 894 | machine); |
a1645ce1 ZY |
895 | if (err < 0) |
896 | pr_err("Couldn't record guest kernel [%d]'s reference" | |
23346f21 | 897 | " relocation symbol.\n", machine->pid); |
a1645ce1 ZY |
898 | } |
899 | ||
98402807 FW |
900 | static struct perf_event_header finished_round_event = { |
901 | .size = sizeof(struct perf_event_header), | |
902 | .type = PERF_RECORD_FINISHED_ROUND, | |
903 | }; | |
904 | ||
a5830532 | 905 | static void record__adjust_affinity(struct record *rec, struct mmap *map) |
f13de660 AB |
906 | { |
907 | if (rec->opts.affinity != PERF_AFFINITY_SYS && | |
908 | !CPU_EQUAL(&rec->affinity_mask, &map->affinity_mask)) { | |
909 | CPU_ZERO(&rec->affinity_mask); | |
910 | CPU_OR(&rec->affinity_mask, &rec->affinity_mask, &map->affinity_mask); | |
911 | sched_setaffinity(0, sizeof(rec->affinity_mask), &rec->affinity_mask); | |
912 | } | |
913 | } | |
914 | ||
5d7f4116 AB |
915 | static size_t process_comp_header(void *record, size_t increment) |
916 | { | |
72932371 | 917 | struct perf_record_compressed *event = record; |
5d7f4116 AB |
918 | size_t size = sizeof(*event); |
919 | ||
920 | if (increment) { | |
921 | event->header.size += increment; | |
922 | return increment; | |
923 | } | |
924 | ||
925 | event->header.type = PERF_RECORD_COMPRESSED; | |
926 | event->header.size = size; | |
927 | ||
928 | return size; | |
929 | } | |
930 | ||
931 | static size_t zstd_compress(struct perf_session *session, void *dst, size_t dst_size, | |
932 | void *src, size_t src_size) | |
933 | { | |
934 | size_t compressed; | |
72932371 | 935 | size_t max_record_size = PERF_SAMPLE_MAX_SIZE - sizeof(struct perf_record_compressed) - 1; |
5d7f4116 AB |
936 | |
937 | compressed = zstd_compress_stream_to_records(&session->zstd_data, dst, dst_size, src, src_size, | |
938 | max_record_size, process_comp_header); | |
939 | ||
940 | session->bytes_transferred += src_size; | |
941 | session->bytes_compressed += compressed; | |
942 | ||
943 | return compressed; | |
944 | } | |
945 | ||
63503dba | 946 | static int record__mmap_read_evlist(struct record *rec, struct evlist *evlist, |
470530bb | 947 | bool overwrite, bool synch) |
98402807 | 948 | { |
dcabb507 | 949 | u64 bytes_written = rec->bytes_written; |
0e2e63dd | 950 | int i; |
8d3eca20 | 951 | int rc = 0; |
a5830532 | 952 | struct mmap *maps; |
d3d1af6f | 953 | int trace_fd = rec->data.file.fd; |
ef781128 | 954 | off_t off = 0; |
98402807 | 955 | |
cb21686b WN |
956 | if (!evlist) |
957 | return 0; | |
ef149c25 | 958 | |
0b72d69a | 959 | maps = overwrite ? evlist->overwrite_mmap : evlist->mmap; |
a4ea0ec4 WN |
960 | if (!maps) |
961 | return 0; | |
962 | ||
0b72d69a | 963 | if (overwrite && evlist->bkw_mmap_state != BKW_MMAP_DATA_PENDING) |
54cc54de WN |
964 | return 0; |
965 | ||
d3d1af6f AB |
966 | if (record__aio_enabled(rec)) |
967 | off = record__aio_get_pos(trace_fd); | |
968 | ||
cb21686b | 969 | for (i = 0; i < evlist->nr_mmaps; i++) { |
470530bb | 970 | u64 flush = 0; |
a5830532 | 971 | struct mmap *map = &maps[i]; |
cb21686b | 972 | |
e035f4ca | 973 | if (map->base) { |
f13de660 | 974 | record__adjust_affinity(rec, map); |
470530bb AB |
975 | if (synch) { |
976 | flush = map->flush; | |
977 | map->flush = 1; | |
978 | } | |
d3d1af6f | 979 | if (!record__aio_enabled(rec)) { |
ef781128 | 980 | if (perf_mmap__push(map, rec, record__pushfn) < 0) { |
470530bb AB |
981 | if (synch) |
982 | map->flush = flush; | |
d3d1af6f AB |
983 | rc = -1; |
984 | goto out; | |
985 | } | |
986 | } else { | |
ef781128 | 987 | if (record__aio_push(rec, map, &off) < 0) { |
d3d1af6f | 988 | record__aio_set_pos(trace_fd, off); |
470530bb AB |
989 | if (synch) |
990 | map->flush = flush; | |
d3d1af6f AB |
991 | rc = -1; |
992 | goto out; | |
993 | } | |
8d3eca20 | 994 | } |
470530bb AB |
995 | if (synch) |
996 | map->flush = flush; | |
8d3eca20 | 997 | } |
ef149c25 | 998 | |
e035f4ca JO |
999 | if (map->auxtrace_mmap.base && !rec->opts.auxtrace_snapshot_mode && |
1000 | record__auxtrace_mmap_read(rec, map) != 0) { | |
ef149c25 AH |
1001 | rc = -1; |
1002 | goto out; | |
1003 | } | |
98402807 FW |
1004 | } |
1005 | ||
d3d1af6f AB |
1006 | if (record__aio_enabled(rec)) |
1007 | record__aio_set_pos(trace_fd, off); | |
1008 | ||
dcabb507 JO |
1009 | /* |
1010 | * Mark the round finished in case we wrote | |
1011 | * at least one event. | |
1012 | */ | |
1013 | if (bytes_written != rec->bytes_written) | |
ded2b8fe | 1014 | rc = record__write(rec, NULL, &finished_round_event, sizeof(finished_round_event)); |
8d3eca20 | 1015 | |
0b72d69a | 1016 | if (overwrite) |
54cc54de | 1017 | perf_evlist__toggle_bkw_mmap(evlist, BKW_MMAP_EMPTY); |
8d3eca20 DA |
1018 | out: |
1019 | return rc; | |
98402807 FW |
1020 | } |
1021 | ||
470530bb | 1022 | static int record__mmap_read_all(struct record *rec, bool synch) |
cb21686b WN |
1023 | { |
1024 | int err; | |
1025 | ||
470530bb | 1026 | err = record__mmap_read_evlist(rec, rec->evlist, false, synch); |
cb21686b WN |
1027 | if (err) |
1028 | return err; | |
1029 | ||
470530bb | 1030 | return record__mmap_read_evlist(rec, rec->evlist, true, synch); |
cb21686b WN |
1031 | } |
1032 | ||
8c6f45a7 | 1033 | static void record__init_features(struct record *rec) |
57706abc | 1034 | { |
57706abc DA |
1035 | struct perf_session *session = rec->session; |
1036 | int feat; | |
1037 | ||
1038 | for (feat = HEADER_FIRST_FEATURE; feat < HEADER_LAST_FEATURE; feat++) | |
1039 | perf_header__set_feat(&session->header, feat); | |
1040 | ||
1041 | if (rec->no_buildid) | |
1042 | perf_header__clear_feat(&session->header, HEADER_BUILD_ID); | |
1043 | ||
ce9036a6 | 1044 | if (!have_tracepoints(&rec->evlist->core.entries)) |
57706abc DA |
1045 | perf_header__clear_feat(&session->header, HEADER_TRACING_DATA); |
1046 | ||
1047 | if (!rec->opts.branch_stack) | |
1048 | perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK); | |
ef149c25 AH |
1049 | |
1050 | if (!rec->opts.full_auxtrace) | |
1051 | perf_header__clear_feat(&session->header, HEADER_AUXTRACE); | |
ffa517ad | 1052 | |
cf790516 AB |
1053 | if (!(rec->opts.use_clockid && rec->opts.clockid_res_ns)) |
1054 | perf_header__clear_feat(&session->header, HEADER_CLOCKID); | |
1055 | ||
258031c0 | 1056 | perf_header__clear_feat(&session->header, HEADER_DIR_FORMAT); |
42e1fd80 AB |
1057 | if (!record__comp_enabled(rec)) |
1058 | perf_header__clear_feat(&session->header, HEADER_COMPRESSED); | |
258031c0 | 1059 | |
ffa517ad | 1060 | perf_header__clear_feat(&session->header, HEADER_STAT); |
57706abc DA |
1061 | } |
1062 | ||
e1ab48ba WN |
1063 | static void |
1064 | record__finish_output(struct record *rec) | |
1065 | { | |
8ceb41d7 JO |
1066 | struct perf_data *data = &rec->data; |
1067 | int fd = perf_data__fd(data); | |
e1ab48ba | 1068 | |
8ceb41d7 | 1069 | if (data->is_pipe) |
e1ab48ba WN |
1070 | return; |
1071 | ||
1072 | rec->session->header.data_size += rec->bytes_written; | |
45112e89 | 1073 | data->file.size = lseek(perf_data__fd(data), 0, SEEK_CUR); |
e1ab48ba WN |
1074 | |
1075 | if (!rec->no_buildid) { | |
1076 | process_buildids(rec); | |
1077 | ||
1078 | if (rec->buildid_all) | |
1079 | dsos__hit_all(rec->session); | |
1080 | } | |
1081 | perf_session__write_header(rec->session, rec->evlist, fd, true); | |
1082 | ||
1083 | return; | |
1084 | } | |
1085 | ||
4ea648ae | 1086 | static int record__synthesize_workload(struct record *rec, bool tail) |
be7b0c9e | 1087 | { |
9d6aae72 | 1088 | int err; |
9749b90e | 1089 | struct perf_thread_map *thread_map; |
be7b0c9e | 1090 | |
4ea648ae WN |
1091 | if (rec->opts.tail_synthesize != tail) |
1092 | return 0; | |
1093 | ||
9d6aae72 ACM |
1094 | thread_map = thread_map__new_by_tid(rec->evlist->workload.pid); |
1095 | if (thread_map == NULL) | |
1096 | return -1; | |
1097 | ||
1098 | err = perf_event__synthesize_thread_map(&rec->tool, thread_map, | |
be7b0c9e WN |
1099 | process_synthesized_event, |
1100 | &rec->session->machines.host, | |
3fcb10e4 | 1101 | rec->opts.sample_address); |
7836e52e | 1102 | perf_thread_map__put(thread_map); |
9d6aae72 | 1103 | return err; |
be7b0c9e WN |
1104 | } |
1105 | ||
4ea648ae | 1106 | static int record__synthesize(struct record *rec, bool tail); |
3c1cb7e3 | 1107 | |
ecfd7a9c WN |
1108 | static int |
1109 | record__switch_output(struct record *rec, bool at_exit) | |
1110 | { | |
8ceb41d7 | 1111 | struct perf_data *data = &rec->data; |
ecfd7a9c | 1112 | int fd, err; |
03724b2e | 1113 | char *new_filename; |
ecfd7a9c WN |
1114 | |
1115 | /* Same Size: "2015122520103046"*/ | |
1116 | char timestamp[] = "InvalidTimestamp"; | |
1117 | ||
d3d1af6f AB |
1118 | record__aio_mmap_read_sync(rec); |
1119 | ||
4ea648ae WN |
1120 | record__synthesize(rec, true); |
1121 | if (target__none(&rec->opts.target)) | |
1122 | record__synthesize_workload(rec, true); | |
1123 | ||
ecfd7a9c WN |
1124 | rec->samples = 0; |
1125 | record__finish_output(rec); | |
1126 | err = fetch_current_timestamp(timestamp, sizeof(timestamp)); | |
1127 | if (err) { | |
1128 | pr_err("Failed to get current timestamp\n"); | |
1129 | return -EINVAL; | |
1130 | } | |
1131 | ||
8ceb41d7 | 1132 | fd = perf_data__switch(data, timestamp, |
ecfd7a9c | 1133 | rec->session->header.data_offset, |
03724b2e | 1134 | at_exit, &new_filename); |
ecfd7a9c WN |
1135 | if (fd >= 0 && !at_exit) { |
1136 | rec->bytes_written = 0; | |
1137 | rec->session->header.data_size = 0; | |
1138 | } | |
1139 | ||
1140 | if (!quiet) | |
1141 | fprintf(stderr, "[ perf record: Dump %s.%s ]\n", | |
2d4f2799 | 1142 | data->path, timestamp); |
3c1cb7e3 | 1143 | |
03724b2e AK |
1144 | if (rec->switch_output.num_files) { |
1145 | int n = rec->switch_output.cur_file + 1; | |
1146 | ||
1147 | if (n >= rec->switch_output.num_files) | |
1148 | n = 0; | |
1149 | rec->switch_output.cur_file = n; | |
1150 | if (rec->switch_output.filenames[n]) { | |
1151 | remove(rec->switch_output.filenames[n]); | |
d8f9da24 | 1152 | zfree(&rec->switch_output.filenames[n]); |
03724b2e AK |
1153 | } |
1154 | rec->switch_output.filenames[n] = new_filename; | |
1155 | } else { | |
1156 | free(new_filename); | |
1157 | } | |
1158 | ||
3c1cb7e3 | 1159 | /* Output tracking events */ |
be7b0c9e | 1160 | if (!at_exit) { |
4ea648ae | 1161 | record__synthesize(rec, false); |
3c1cb7e3 | 1162 | |
be7b0c9e WN |
1163 | /* |
1164 | * In 'perf record --switch-output' without -a, | |
1165 | * record__synthesize() in record__switch_output() won't | |
1166 | * generate tracking events because there's no thread_map | |
1167 | * in evlist. Which causes newly created perf.data doesn't | |
1168 | * contain map and comm information. | |
1169 | * Create a fake thread_map and directly call | |
1170 | * perf_event__synthesize_thread_map() for those events. | |
1171 | */ | |
1172 | if (target__none(&rec->opts.target)) | |
4ea648ae | 1173 | record__synthesize_workload(rec, false); |
be7b0c9e | 1174 | } |
ecfd7a9c WN |
1175 | return fd; |
1176 | } | |
1177 | ||
f33cbe72 ACM |
1178 | static volatile int workload_exec_errno; |
1179 | ||
1180 | /* | |
1181 | * perf_evlist__prepare_workload will send a SIGUSR1 | |
1182 | * if the fork fails, since we asked by setting its | |
1183 | * want_signal to true. | |
1184 | */ | |
45604710 NK |
1185 | static void workload_exec_failed_signal(int signo __maybe_unused, |
1186 | siginfo_t *info, | |
f33cbe72 ACM |
1187 | void *ucontext __maybe_unused) |
1188 | { | |
1189 | workload_exec_errno = info->si_value.sival_int; | |
1190 | done = 1; | |
f33cbe72 ACM |
1191 | child_finished = 1; |
1192 | } | |
1193 | ||
2dd6d8a1 | 1194 | static void snapshot_sig_handler(int sig); |
bfacbe3b | 1195 | static void alarm_sig_handler(int sig); |
2dd6d8a1 | 1196 | |
ee667f94 | 1197 | static const struct perf_event_mmap_page * |
63503dba | 1198 | perf_evlist__pick_pc(struct evlist *evlist) |
ee667f94 | 1199 | { |
b2cb615d WN |
1200 | if (evlist) { |
1201 | if (evlist->mmap && evlist->mmap[0].base) | |
1202 | return evlist->mmap[0].base; | |
0b72d69a WN |
1203 | if (evlist->overwrite_mmap && evlist->overwrite_mmap[0].base) |
1204 | return evlist->overwrite_mmap[0].base; | |
b2cb615d | 1205 | } |
ee667f94 WN |
1206 | return NULL; |
1207 | } | |
1208 | ||
c45628b0 WN |
1209 | static const struct perf_event_mmap_page *record__pick_pc(struct record *rec) |
1210 | { | |
ee667f94 WN |
1211 | const struct perf_event_mmap_page *pc; |
1212 | ||
1213 | pc = perf_evlist__pick_pc(rec->evlist); | |
1214 | if (pc) | |
1215 | return pc; | |
c45628b0 WN |
1216 | return NULL; |
1217 | } | |
1218 | ||
4ea648ae | 1219 | static int record__synthesize(struct record *rec, bool tail) |
c45c86eb WN |
1220 | { |
1221 | struct perf_session *session = rec->session; | |
1222 | struct machine *machine = &session->machines.host; | |
8ceb41d7 | 1223 | struct perf_data *data = &rec->data; |
c45c86eb WN |
1224 | struct record_opts *opts = &rec->opts; |
1225 | struct perf_tool *tool = &rec->tool; | |
8ceb41d7 | 1226 | int fd = perf_data__fd(data); |
c45c86eb WN |
1227 | int err = 0; |
1228 | ||
4ea648ae WN |
1229 | if (rec->opts.tail_synthesize != tail) |
1230 | return 0; | |
1231 | ||
8ceb41d7 | 1232 | if (data->is_pipe) { |
a2015516 JO |
1233 | /* |
1234 | * We need to synthesize events first, because some | |
1235 | * features works on top of them (on report side). | |
1236 | */ | |
318ec184 | 1237 | err = perf_event__synthesize_attrs(tool, rec->evlist, |
c45c86eb WN |
1238 | process_synthesized_event); |
1239 | if (err < 0) { | |
1240 | pr_err("Couldn't synthesize attrs.\n"); | |
1241 | goto out; | |
1242 | } | |
1243 | ||
a2015516 JO |
1244 | err = perf_event__synthesize_features(tool, session, rec->evlist, |
1245 | process_synthesized_event); | |
1246 | if (err < 0) { | |
1247 | pr_err("Couldn't synthesize features.\n"); | |
1248 | return err; | |
1249 | } | |
1250 | ||
ce9036a6 | 1251 | if (have_tracepoints(&rec->evlist->core.entries)) { |
c45c86eb WN |
1252 | /* |
1253 | * FIXME err <= 0 here actually means that | |
1254 | * there were no tracepoints so its not really | |
1255 | * an error, just that we don't need to | |
1256 | * synthesize anything. We really have to | |
1257 | * return this more properly and also | |
1258 | * propagate errors that now are calling die() | |
1259 | */ | |
1260 | err = perf_event__synthesize_tracing_data(tool, fd, rec->evlist, | |
1261 | process_synthesized_event); | |
1262 | if (err <= 0) { | |
1263 | pr_err("Couldn't record tracing data.\n"); | |
1264 | goto out; | |
1265 | } | |
1266 | rec->bytes_written += err; | |
1267 | } | |
1268 | } | |
1269 | ||
c45628b0 | 1270 | err = perf_event__synth_time_conv(record__pick_pc(rec), tool, |
46bc29b9 AH |
1271 | process_synthesized_event, machine); |
1272 | if (err) | |
1273 | goto out; | |
1274 | ||
c45c86eb WN |
1275 | if (rec->opts.full_auxtrace) { |
1276 | err = perf_event__synthesize_auxtrace_info(rec->itr, tool, | |
1277 | session, process_synthesized_event); | |
1278 | if (err) | |
1279 | goto out; | |
1280 | } | |
1281 | ||
6c443954 ACM |
1282 | if (!perf_evlist__exclude_kernel(rec->evlist)) { |
1283 | err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event, | |
1284 | machine); | |
1285 | WARN_ONCE(err < 0, "Couldn't record kernel reference relocation symbol\n" | |
1286 | "Symbol resolution may be skewed if relocation was used (e.g. kexec).\n" | |
1287 | "Check /proc/kallsyms permission or run as root.\n"); | |
1288 | ||
1289 | err = perf_event__synthesize_modules(tool, process_synthesized_event, | |
1290 | machine); | |
1291 | WARN_ONCE(err < 0, "Couldn't record kernel module information.\n" | |
1292 | "Symbol resolution may be skewed if relocation was used (e.g. kexec).\n" | |
1293 | "Check /proc/modules permission or run as root.\n"); | |
1294 | } | |
c45c86eb WN |
1295 | |
1296 | if (perf_guest) { | |
1297 | machines__process_guests(&session->machines, | |
1298 | perf_event__synthesize_guest_os, tool); | |
1299 | } | |
1300 | ||
bfd8f72c AK |
1301 | err = perf_event__synthesize_extra_attr(&rec->tool, |
1302 | rec->evlist, | |
1303 | process_synthesized_event, | |
1304 | data->is_pipe); | |
1305 | if (err) | |
1306 | goto out; | |
1307 | ||
03617c22 | 1308 | err = perf_event__synthesize_thread_map2(&rec->tool, rec->evlist->core.threads, |
373565d2 AK |
1309 | process_synthesized_event, |
1310 | NULL); | |
1311 | if (err < 0) { | |
1312 | pr_err("Couldn't synthesize thread map.\n"); | |
1313 | return err; | |
1314 | } | |
1315 | ||
f72f901d | 1316 | err = perf_event__synthesize_cpu_map(&rec->tool, rec->evlist->core.cpus, |
373565d2 AK |
1317 | process_synthesized_event, NULL); |
1318 | if (err < 0) { | |
1319 | pr_err("Couldn't synthesize cpu map.\n"); | |
1320 | return err; | |
1321 | } | |
1322 | ||
e5416950 | 1323 | err = perf_event__synthesize_bpf_events(session, process_synthesized_event, |
7b612e29 SL |
1324 | machine, opts); |
1325 | if (err < 0) | |
1326 | pr_warning("Couldn't synthesize bpf events.\n"); | |
1327 | ||
03617c22 | 1328 | err = __machine__synthesize_threads(machine, tool, &opts->target, rec->evlist->core.threads, |
c45c86eb | 1329 | process_synthesized_event, opts->sample_address, |
3fcb10e4 | 1330 | 1); |
c45c86eb WN |
1331 | out: |
1332 | return err; | |
1333 | } | |
1334 | ||
8c6f45a7 | 1335 | static int __cmd_record(struct record *rec, int argc, const char **argv) |
16c8a109 | 1336 | { |
57706abc | 1337 | int err; |
45604710 | 1338 | int status = 0; |
8b412664 | 1339 | unsigned long waking = 0; |
46be604b | 1340 | const bool forks = argc > 0; |
45694aa7 | 1341 | struct perf_tool *tool = &rec->tool; |
b4006796 | 1342 | struct record_opts *opts = &rec->opts; |
8ceb41d7 | 1343 | struct perf_data *data = &rec->data; |
d20deb64 | 1344 | struct perf_session *session; |
6dcf45ef | 1345 | bool disabled = false, draining = false; |
63503dba | 1346 | struct evlist *sb_evlist = NULL; |
42aa276f | 1347 | int fd; |
d3c8c08e | 1348 | float ratio = 0; |
de9ac07b | 1349 | |
45604710 | 1350 | atexit(record__sig_exit); |
f5970550 PZ |
1351 | signal(SIGCHLD, sig_handler); |
1352 | signal(SIGINT, sig_handler); | |
804f7ac7 | 1353 | signal(SIGTERM, sig_handler); |
a074865e | 1354 | signal(SIGSEGV, sigsegv_handler); |
c0bdc1c4 | 1355 | |
f3b3614a HB |
1356 | if (rec->opts.record_namespaces) |
1357 | tool->namespace_events = true; | |
1358 | ||
dc0c6127 | 1359 | if (rec->opts.auxtrace_snapshot_mode || rec->switch_output.enabled) { |
2dd6d8a1 | 1360 | signal(SIGUSR2, snapshot_sig_handler); |
3c1cb7e3 WN |
1361 | if (rec->opts.auxtrace_snapshot_mode) |
1362 | trigger_on(&auxtrace_snapshot_trigger); | |
dc0c6127 | 1363 | if (rec->switch_output.enabled) |
3c1cb7e3 | 1364 | trigger_on(&switch_output_trigger); |
c0bdc1c4 | 1365 | } else { |
2dd6d8a1 | 1366 | signal(SIGUSR2, SIG_IGN); |
c0bdc1c4 | 1367 | } |
f5970550 | 1368 | |
8ceb41d7 | 1369 | session = perf_session__new(data, false, tool); |
6ef81c55 | 1370 | if (IS_ERR(session)) { |
ffa91880 | 1371 | pr_err("Perf session creation failed.\n"); |
6ef81c55 | 1372 | return PTR_ERR(session); |
a9a70bbc ACM |
1373 | } |
1374 | ||
8ceb41d7 | 1375 | fd = perf_data__fd(data); |
d20deb64 ACM |
1376 | rec->session = session; |
1377 | ||
5d7f4116 AB |
1378 | if (zstd_init(&session->zstd_data, rec->opts.comp_level) < 0) { |
1379 | pr_err("Compression initialization failed.\n"); | |
1380 | return -1; | |
1381 | } | |
1382 | ||
1383 | session->header.env.comp_type = PERF_COMP_ZSTD; | |
1384 | session->header.env.comp_level = rec->opts.comp_level; | |
1385 | ||
8c6f45a7 | 1386 | record__init_features(rec); |
330aa675 | 1387 | |
cf790516 AB |
1388 | if (rec->opts.use_clockid && rec->opts.clockid_res_ns) |
1389 | session->header.env.clockid_res_ns = rec->opts.clockid_res_ns; | |
1390 | ||
d4db3f16 | 1391 | if (forks) { |
3e2be2da | 1392 | err = perf_evlist__prepare_workload(rec->evlist, &opts->target, |
8ceb41d7 | 1393 | argv, data->is_pipe, |
735f7e0b | 1394 | workload_exec_failed_signal); |
35b9d88e ACM |
1395 | if (err < 0) { |
1396 | pr_err("Couldn't run the workload!\n"); | |
45604710 | 1397 | status = err; |
35b9d88e | 1398 | goto out_delete_session; |
856e9660 | 1399 | } |
856e9660 PZ |
1400 | } |
1401 | ||
ad46e48c JO |
1402 | /* |
1403 | * If we have just single event and are sending data | |
1404 | * through pipe, we need to force the ids allocation, | |
1405 | * because we synthesize event name through the pipe | |
1406 | * and need the id for that. | |
1407 | */ | |
6484d2f9 | 1408 | if (data->is_pipe && rec->evlist->core.nr_entries == 1) |
ad46e48c JO |
1409 | rec->opts.sample_id = true; |
1410 | ||
8c6f45a7 | 1411 | if (record__open(rec) != 0) { |
8d3eca20 | 1412 | err = -1; |
45604710 | 1413 | goto out_child; |
8d3eca20 | 1414 | } |
42e1fd80 | 1415 | session->header.env.comp_mmap_len = session->evlist->mmap_len; |
de9ac07b | 1416 | |
8690a2a7 WN |
1417 | err = bpf__apply_obj_config(); |
1418 | if (err) { | |
1419 | char errbuf[BUFSIZ]; | |
1420 | ||
1421 | bpf__strerror_apply_obj_config(err, errbuf, sizeof(errbuf)); | |
1422 | pr_err("ERROR: Apply config to BPF failed: %s\n", | |
1423 | errbuf); | |
1424 | goto out_child; | |
1425 | } | |
1426 | ||
cca8482c AH |
1427 | /* |
1428 | * Normally perf_session__new would do this, but it doesn't have the | |
1429 | * evlist. | |
1430 | */ | |
1431 | if (rec->tool.ordered_events && !perf_evlist__sample_id_all(rec->evlist)) { | |
1432 | pr_warning("WARNING: No sample_id_all support, falling back to unordered processing\n"); | |
1433 | rec->tool.ordered_events = false; | |
1434 | } | |
1435 | ||
3e2be2da | 1436 | if (!rec->evlist->nr_groups) |
a8bb559b NK |
1437 | perf_header__clear_feat(&session->header, HEADER_GROUP_DESC); |
1438 | ||
8ceb41d7 | 1439 | if (data->is_pipe) { |
42aa276f | 1440 | err = perf_header__write_pipe(fd); |
529870e3 | 1441 | if (err < 0) |
45604710 | 1442 | goto out_child; |
563aecb2 | 1443 | } else { |
42aa276f | 1444 | err = perf_session__write_header(session, rec->evlist, fd, false); |
d5eed904 | 1445 | if (err < 0) |
45604710 | 1446 | goto out_child; |
56b03f3c ACM |
1447 | } |
1448 | ||
d3665498 | 1449 | if (!rec->no_buildid |
e20960c0 | 1450 | && !perf_header__has_feat(&session->header, HEADER_BUILD_ID)) { |
d3665498 | 1451 | pr_err("Couldn't generate buildids. " |
e20960c0 | 1452 | "Use --no-buildid to profile anyway.\n"); |
8d3eca20 | 1453 | err = -1; |
45604710 | 1454 | goto out_child; |
e20960c0 RR |
1455 | } |
1456 | ||
d56354dc SL |
1457 | if (!opts->no_bpf_event) |
1458 | bpf_event__add_sb_event(&sb_evlist, &session->header.env); | |
1459 | ||
657ee553 SL |
1460 | if (perf_evlist__start_sb_thread(sb_evlist, &rec->opts.target)) { |
1461 | pr_debug("Couldn't start the BPF side band thread:\nBPF programs starting from now on won't be annotatable\n"); | |
1462 | opts->no_bpf_event = true; | |
1463 | } | |
1464 | ||
4ea648ae | 1465 | err = record__synthesize(rec, false); |
c45c86eb | 1466 | if (err < 0) |
45604710 | 1467 | goto out_child; |
8d3eca20 | 1468 | |
d20deb64 | 1469 | if (rec->realtime_prio) { |
de9ac07b PZ |
1470 | struct sched_param param; |
1471 | ||
d20deb64 | 1472 | param.sched_priority = rec->realtime_prio; |
de9ac07b | 1473 | if (sched_setscheduler(0, SCHED_FIFO, ¶m)) { |
6beba7ad | 1474 | pr_err("Could not set realtime priority.\n"); |
8d3eca20 | 1475 | err = -1; |
45604710 | 1476 | goto out_child; |
de9ac07b PZ |
1477 | } |
1478 | } | |
1479 | ||
774cb499 JO |
1480 | /* |
1481 | * When perf is starting the traced process, all the events | |
1482 | * (apart from group members) have enable_on_exec=1 set, | |
1483 | * so don't spoil it by prematurely enabling them. | |
1484 | */ | |
6619a53e | 1485 | if (!target__none(&opts->target) && !opts->initial_delay) |
1c87f165 | 1486 | evlist__enable(rec->evlist); |
764e16a3 | 1487 | |
856e9660 PZ |
1488 | /* |
1489 | * Let the child rip | |
1490 | */ | |
e803cf97 | 1491 | if (forks) { |
20a8a3cf | 1492 | struct machine *machine = &session->machines.host; |
e5bed564 | 1493 | union perf_event *event; |
e907caf3 | 1494 | pid_t tgid; |
e5bed564 NK |
1495 | |
1496 | event = malloc(sizeof(event->comm) + machine->id_hdr_size); | |
1497 | if (event == NULL) { | |
1498 | err = -ENOMEM; | |
1499 | goto out_child; | |
1500 | } | |
1501 | ||
e803cf97 NK |
1502 | /* |
1503 | * Some H/W events are generated before COMM event | |
1504 | * which is emitted during exec(), so perf script | |
1505 | * cannot see a correct process name for those events. | |
1506 | * Synthesize COMM event to prevent it. | |
1507 | */ | |
e907caf3 HB |
1508 | tgid = perf_event__synthesize_comm(tool, event, |
1509 | rec->evlist->workload.pid, | |
1510 | process_synthesized_event, | |
1511 | machine); | |
1512 | free(event); | |
1513 | ||
1514 | if (tgid == -1) | |
1515 | goto out_child; | |
1516 | ||
1517 | event = malloc(sizeof(event->namespaces) + | |
1518 | (NR_NAMESPACES * sizeof(struct perf_ns_link_info)) + | |
1519 | machine->id_hdr_size); | |
1520 | if (event == NULL) { | |
1521 | err = -ENOMEM; | |
1522 | goto out_child; | |
1523 | } | |
1524 | ||
1525 | /* | |
1526 | * Synthesize NAMESPACES event for the command specified. | |
1527 | */ | |
1528 | perf_event__synthesize_namespaces(tool, event, | |
1529 | rec->evlist->workload.pid, | |
1530 | tgid, process_synthesized_event, | |
1531 | machine); | |
e5bed564 | 1532 | free(event); |
e803cf97 | 1533 | |
3e2be2da | 1534 | perf_evlist__start_workload(rec->evlist); |
e803cf97 | 1535 | } |
856e9660 | 1536 | |
6619a53e | 1537 | if (opts->initial_delay) { |
0693e680 | 1538 | usleep(opts->initial_delay * USEC_PER_MSEC); |
1c87f165 | 1539 | evlist__enable(rec->evlist); |
6619a53e AK |
1540 | } |
1541 | ||
5f9cf599 | 1542 | trigger_ready(&auxtrace_snapshot_trigger); |
3c1cb7e3 | 1543 | trigger_ready(&switch_output_trigger); |
a074865e | 1544 | perf_hooks__invoke_record_start(); |
649c48a9 | 1545 | for (;;) { |
9f065194 | 1546 | unsigned long long hits = rec->samples; |
de9ac07b | 1547 | |
05737464 WN |
1548 | /* |
1549 | * rec->evlist->bkw_mmap_state is possible to be | |
1550 | * BKW_MMAP_EMPTY here: when done == true and | |
1551 | * hits != rec->samples in previous round. | |
1552 | * | |
1553 | * perf_evlist__toggle_bkw_mmap ensure we never | |
1554 | * convert BKW_MMAP_EMPTY to BKW_MMAP_DATA_PENDING. | |
1555 | */ | |
1556 | if (trigger_is_hit(&switch_output_trigger) || done || draining) | |
1557 | perf_evlist__toggle_bkw_mmap(rec->evlist, BKW_MMAP_DATA_PENDING); | |
1558 | ||
470530bb | 1559 | if (record__mmap_read_all(rec, false) < 0) { |
5f9cf599 | 1560 | trigger_error(&auxtrace_snapshot_trigger); |
3c1cb7e3 | 1561 | trigger_error(&switch_output_trigger); |
8d3eca20 | 1562 | err = -1; |
45604710 | 1563 | goto out_child; |
8d3eca20 | 1564 | } |
de9ac07b | 1565 | |
2dd6d8a1 AH |
1566 | if (auxtrace_record__snapshot_started) { |
1567 | auxtrace_record__snapshot_started = 0; | |
5f9cf599 | 1568 | if (!trigger_is_error(&auxtrace_snapshot_trigger)) |
ce7b0e42 | 1569 | record__read_auxtrace_snapshot(rec, false); |
5f9cf599 | 1570 | if (trigger_is_error(&auxtrace_snapshot_trigger)) { |
2dd6d8a1 AH |
1571 | pr_err("AUX area tracing snapshot failed\n"); |
1572 | err = -1; | |
1573 | goto out_child; | |
1574 | } | |
1575 | } | |
1576 | ||
3c1cb7e3 | 1577 | if (trigger_is_hit(&switch_output_trigger)) { |
05737464 WN |
1578 | /* |
1579 | * If switch_output_trigger is hit, the data in | |
1580 | * overwritable ring buffer should have been collected, | |
1581 | * so bkw_mmap_state should be set to BKW_MMAP_EMPTY. | |
1582 | * | |
1583 | * If SIGUSR2 raise after or during record__mmap_read_all(), | |
1584 | * record__mmap_read_all() didn't collect data from | |
1585 | * overwritable ring buffer. Read again. | |
1586 | */ | |
1587 | if (rec->evlist->bkw_mmap_state == BKW_MMAP_RUNNING) | |
1588 | continue; | |
3c1cb7e3 WN |
1589 | trigger_ready(&switch_output_trigger); |
1590 | ||
05737464 WN |
1591 | /* |
1592 | * Reenable events in overwrite ring buffer after | |
1593 | * record__mmap_read_all(): we should have collected | |
1594 | * data from it. | |
1595 | */ | |
1596 | perf_evlist__toggle_bkw_mmap(rec->evlist, BKW_MMAP_RUNNING); | |
1597 | ||
3c1cb7e3 WN |
1598 | if (!quiet) |
1599 | fprintf(stderr, "[ perf record: dump data: Woken up %ld times ]\n", | |
1600 | waking); | |
1601 | waking = 0; | |
1602 | fd = record__switch_output(rec, false); | |
1603 | if (fd < 0) { | |
1604 | pr_err("Failed to switch to new file\n"); | |
1605 | trigger_error(&switch_output_trigger); | |
1606 | err = fd; | |
1607 | goto out_child; | |
1608 | } | |
bfacbe3b JO |
1609 | |
1610 | /* re-arm the alarm */ | |
1611 | if (rec->switch_output.time) | |
1612 | alarm(rec->switch_output.time); | |
3c1cb7e3 WN |
1613 | } |
1614 | ||
d20deb64 | 1615 | if (hits == rec->samples) { |
6dcf45ef | 1616 | if (done || draining) |
649c48a9 | 1617 | break; |
f66a889d | 1618 | err = perf_evlist__poll(rec->evlist, -1); |
a515114f JO |
1619 | /* |
1620 | * Propagate error, only if there's any. Ignore positive | |
1621 | * number of returned events and interrupt error. | |
1622 | */ | |
1623 | if (err > 0 || (err < 0 && errno == EINTR)) | |
45604710 | 1624 | err = 0; |
8b412664 | 1625 | waking++; |
6dcf45ef ACM |
1626 | |
1627 | if (perf_evlist__filter_pollfd(rec->evlist, POLLERR | POLLHUP) == 0) | |
1628 | draining = true; | |
8b412664 PZ |
1629 | } |
1630 | ||
774cb499 JO |
1631 | /* |
1632 | * When perf is starting the traced process, at the end events | |
1633 | * die with the process and we wait for that. Thus no need to | |
1634 | * disable events in this case. | |
1635 | */ | |
602ad878 | 1636 | if (done && !disabled && !target__none(&opts->target)) { |
5f9cf599 | 1637 | trigger_off(&auxtrace_snapshot_trigger); |
e74676de | 1638 | evlist__disable(rec->evlist); |
2711926a JO |
1639 | disabled = true; |
1640 | } | |
de9ac07b | 1641 | } |
ce7b0e42 | 1642 | |
5f9cf599 | 1643 | trigger_off(&auxtrace_snapshot_trigger); |
3c1cb7e3 | 1644 | trigger_off(&switch_output_trigger); |
de9ac07b | 1645 | |
ce7b0e42 AS |
1646 | if (opts->auxtrace_snapshot_on_exit) |
1647 | record__auxtrace_snapshot_exit(rec); | |
1648 | ||
f33cbe72 | 1649 | if (forks && workload_exec_errno) { |
35550da3 | 1650 | char msg[STRERR_BUFSIZE]; |
c8b5f2c9 | 1651 | const char *emsg = str_error_r(workload_exec_errno, msg, sizeof(msg)); |
f33cbe72 ACM |
1652 | pr_err("Workload failed: %s\n", emsg); |
1653 | err = -1; | |
45604710 | 1654 | goto out_child; |
f33cbe72 ACM |
1655 | } |
1656 | ||
e3d59112 | 1657 | if (!quiet) |
45604710 | 1658 | fprintf(stderr, "[ perf record: Woken up %ld times to write data ]\n", waking); |
b44308f5 | 1659 | |
4ea648ae WN |
1660 | if (target__none(&rec->opts.target)) |
1661 | record__synthesize_workload(rec, true); | |
1662 | ||
45604710 | 1663 | out_child: |
470530bb | 1664 | record__mmap_read_all(rec, true); |
d3d1af6f AB |
1665 | record__aio_mmap_read_sync(rec); |
1666 | ||
d3c8c08e AB |
1667 | if (rec->session->bytes_transferred && rec->session->bytes_compressed) { |
1668 | ratio = (float)rec->session->bytes_transferred/(float)rec->session->bytes_compressed; | |
1669 | session->header.env.comp_ratio = ratio + 0.5; | |
1670 | } | |
1671 | ||
45604710 NK |
1672 | if (forks) { |
1673 | int exit_status; | |
addc2785 | 1674 | |
45604710 NK |
1675 | if (!child_finished) |
1676 | kill(rec->evlist->workload.pid, SIGTERM); | |
1677 | ||
1678 | wait(&exit_status); | |
1679 | ||
1680 | if (err < 0) | |
1681 | status = err; | |
1682 | else if (WIFEXITED(exit_status)) | |
1683 | status = WEXITSTATUS(exit_status); | |
1684 | else if (WIFSIGNALED(exit_status)) | |
1685 | signr = WTERMSIG(exit_status); | |
1686 | } else | |
1687 | status = err; | |
1688 | ||
4ea648ae | 1689 | record__synthesize(rec, true); |
e3d59112 NK |
1690 | /* this will be recalculated during process_buildids() */ |
1691 | rec->samples = 0; | |
1692 | ||
ecfd7a9c WN |
1693 | if (!err) { |
1694 | if (!rec->timestamp_filename) { | |
1695 | record__finish_output(rec); | |
1696 | } else { | |
1697 | fd = record__switch_output(rec, true); | |
1698 | if (fd < 0) { | |
1699 | status = fd; | |
1700 | goto out_delete_session; | |
1701 | } | |
1702 | } | |
1703 | } | |
39d17dac | 1704 | |
a074865e WN |
1705 | perf_hooks__invoke_record_end(); |
1706 | ||
e3d59112 NK |
1707 | if (!err && !quiet) { |
1708 | char samples[128]; | |
ecfd7a9c WN |
1709 | const char *postfix = rec->timestamp_filename ? |
1710 | ".<timestamp>" : ""; | |
e3d59112 | 1711 | |
ef149c25 | 1712 | if (rec->samples && !rec->opts.full_auxtrace) |
e3d59112 NK |
1713 | scnprintf(samples, sizeof(samples), |
1714 | " (%" PRIu64 " samples)", rec->samples); | |
1715 | else | |
1716 | samples[0] = '\0'; | |
1717 | ||
d3c8c08e | 1718 | fprintf(stderr, "[ perf record: Captured and wrote %.3f MB %s%s%s", |
8ceb41d7 | 1719 | perf_data__size(data) / 1024.0 / 1024.0, |
2d4f2799 | 1720 | data->path, postfix, samples); |
d3c8c08e AB |
1721 | if (ratio) { |
1722 | fprintf(stderr, ", compressed (original %.3f MB, ratio is %.3f)", | |
1723 | rec->session->bytes_transferred / 1024.0 / 1024.0, | |
1724 | ratio); | |
1725 | } | |
1726 | fprintf(stderr, " ]\n"); | |
e3d59112 NK |
1727 | } |
1728 | ||
39d17dac | 1729 | out_delete_session: |
5d7f4116 | 1730 | zstd_fini(&session->zstd_data); |
39d17dac | 1731 | perf_session__delete(session); |
657ee553 SL |
1732 | |
1733 | if (!opts->no_bpf_event) | |
1734 | perf_evlist__stop_sb_thread(sb_evlist); | |
45604710 | 1735 | return status; |
de9ac07b | 1736 | } |
0e9b20b8 | 1737 | |
0883e820 | 1738 | static void callchain_debug(struct callchain_param *callchain) |
09b0fd45 | 1739 | { |
aad2b21c | 1740 | static const char *str[CALLCHAIN_MAX] = { "NONE", "FP", "DWARF", "LBR" }; |
a601fdff | 1741 | |
0883e820 | 1742 | pr_debug("callchain: type %s\n", str[callchain->record_mode]); |
26d33022 | 1743 | |
0883e820 | 1744 | if (callchain->record_mode == CALLCHAIN_DWARF) |
09b0fd45 | 1745 | pr_debug("callchain: stack dump size %d\n", |
0883e820 | 1746 | callchain->dump_size); |
09b0fd45 JO |
1747 | } |
1748 | ||
0883e820 ACM |
1749 | int record_opts__parse_callchain(struct record_opts *record, |
1750 | struct callchain_param *callchain, | |
1751 | const char *arg, bool unset) | |
09b0fd45 | 1752 | { |
09b0fd45 | 1753 | int ret; |
0883e820 | 1754 | callchain->enabled = !unset; |
eb853e80 | 1755 | |
09b0fd45 JO |
1756 | /* --no-call-graph */ |
1757 | if (unset) { | |
0883e820 | 1758 | callchain->record_mode = CALLCHAIN_NONE; |
09b0fd45 JO |
1759 | pr_debug("callchain: disabled\n"); |
1760 | return 0; | |
1761 | } | |
1762 | ||
0883e820 | 1763 | ret = parse_callchain_record_opt(arg, callchain); |
5c0cf224 JO |
1764 | if (!ret) { |
1765 | /* Enable data address sampling for DWARF unwind. */ | |
0883e820 | 1766 | if (callchain->record_mode == CALLCHAIN_DWARF) |
5c0cf224 | 1767 | record->sample_address = true; |
0883e820 | 1768 | callchain_debug(callchain); |
5c0cf224 | 1769 | } |
26d33022 JO |
1770 | |
1771 | return ret; | |
1772 | } | |
1773 | ||
0883e820 ACM |
1774 | int record_parse_callchain_opt(const struct option *opt, |
1775 | const char *arg, | |
1776 | int unset) | |
1777 | { | |
1778 | return record_opts__parse_callchain(opt->value, &callchain_param, arg, unset); | |
1779 | } | |
1780 | ||
c421e80b | 1781 | int record_callchain_opt(const struct option *opt, |
09b0fd45 JO |
1782 | const char *arg __maybe_unused, |
1783 | int unset __maybe_unused) | |
1784 | { | |
2ddd5c04 | 1785 | struct callchain_param *callchain = opt->value; |
c421e80b | 1786 | |
2ddd5c04 | 1787 | callchain->enabled = true; |
09b0fd45 | 1788 | |
2ddd5c04 ACM |
1789 | if (callchain->record_mode == CALLCHAIN_NONE) |
1790 | callchain->record_mode = CALLCHAIN_FP; | |
eb853e80 | 1791 | |
2ddd5c04 | 1792 | callchain_debug(callchain); |
09b0fd45 JO |
1793 | return 0; |
1794 | } | |
1795 | ||
eb853e80 JO |
1796 | static int perf_record_config(const char *var, const char *value, void *cb) |
1797 | { | |
7a29c087 NK |
1798 | struct record *rec = cb; |
1799 | ||
1800 | if (!strcmp(var, "record.build-id")) { | |
1801 | if (!strcmp(value, "cache")) | |
1802 | rec->no_buildid_cache = false; | |
1803 | else if (!strcmp(value, "no-cache")) | |
1804 | rec->no_buildid_cache = true; | |
1805 | else if (!strcmp(value, "skip")) | |
1806 | rec->no_buildid = true; | |
1807 | else | |
1808 | return -1; | |
1809 | return 0; | |
1810 | } | |
cff17205 YX |
1811 | if (!strcmp(var, "record.call-graph")) { |
1812 | var = "call-graph.record-mode"; | |
1813 | return perf_default_config(var, value, cb); | |
1814 | } | |
93f20c0f AB |
1815 | #ifdef HAVE_AIO_SUPPORT |
1816 | if (!strcmp(var, "record.aio")) { | |
1817 | rec->opts.nr_cblocks = strtol(value, NULL, 0); | |
1818 | if (!rec->opts.nr_cblocks) | |
1819 | rec->opts.nr_cblocks = nr_cblocks_default; | |
1820 | } | |
1821 | #endif | |
eb853e80 | 1822 | |
cff17205 | 1823 | return 0; |
eb853e80 JO |
1824 | } |
1825 | ||
814c8c38 PZ |
1826 | struct clockid_map { |
1827 | const char *name; | |
1828 | int clockid; | |
1829 | }; | |
1830 | ||
1831 | #define CLOCKID_MAP(n, c) \ | |
1832 | { .name = n, .clockid = (c), } | |
1833 | ||
1834 | #define CLOCKID_END { .name = NULL, } | |
1835 | ||
1836 | ||
1837 | /* | |
1838 | * Add the missing ones, we need to build on many distros... | |
1839 | */ | |
1840 | #ifndef CLOCK_MONOTONIC_RAW | |
1841 | #define CLOCK_MONOTONIC_RAW 4 | |
1842 | #endif | |
1843 | #ifndef CLOCK_BOOTTIME | |
1844 | #define CLOCK_BOOTTIME 7 | |
1845 | #endif | |
1846 | #ifndef CLOCK_TAI | |
1847 | #define CLOCK_TAI 11 | |
1848 | #endif | |
1849 | ||
1850 | static const struct clockid_map clockids[] = { | |
1851 | /* available for all events, NMI safe */ | |
1852 | CLOCKID_MAP("monotonic", CLOCK_MONOTONIC), | |
1853 | CLOCKID_MAP("monotonic_raw", CLOCK_MONOTONIC_RAW), | |
1854 | ||
1855 | /* available for some events */ | |
1856 | CLOCKID_MAP("realtime", CLOCK_REALTIME), | |
1857 | CLOCKID_MAP("boottime", CLOCK_BOOTTIME), | |
1858 | CLOCKID_MAP("tai", CLOCK_TAI), | |
1859 | ||
1860 | /* available for the lazy */ | |
1861 | CLOCKID_MAP("mono", CLOCK_MONOTONIC), | |
1862 | CLOCKID_MAP("raw", CLOCK_MONOTONIC_RAW), | |
1863 | CLOCKID_MAP("real", CLOCK_REALTIME), | |
1864 | CLOCKID_MAP("boot", CLOCK_BOOTTIME), | |
1865 | ||
1866 | CLOCKID_END, | |
1867 | }; | |
1868 | ||
cf790516 AB |
1869 | static int get_clockid_res(clockid_t clk_id, u64 *res_ns) |
1870 | { | |
1871 | struct timespec res; | |
1872 | ||
1873 | *res_ns = 0; | |
1874 | if (!clock_getres(clk_id, &res)) | |
1875 | *res_ns = res.tv_nsec + res.tv_sec * NSEC_PER_SEC; | |
1876 | else | |
1877 | pr_warning("WARNING: Failed to determine specified clock resolution.\n"); | |
1878 | ||
1879 | return 0; | |
1880 | } | |
1881 | ||
814c8c38 PZ |
1882 | static int parse_clockid(const struct option *opt, const char *str, int unset) |
1883 | { | |
1884 | struct record_opts *opts = (struct record_opts *)opt->value; | |
1885 | const struct clockid_map *cm; | |
1886 | const char *ostr = str; | |
1887 | ||
1888 | if (unset) { | |
1889 | opts->use_clockid = 0; | |
1890 | return 0; | |
1891 | } | |
1892 | ||
1893 | /* no arg passed */ | |
1894 | if (!str) | |
1895 | return 0; | |
1896 | ||
1897 | /* no setting it twice */ | |
1898 | if (opts->use_clockid) | |
1899 | return -1; | |
1900 | ||
1901 | opts->use_clockid = true; | |
1902 | ||
1903 | /* if its a number, we're done */ | |
1904 | if (sscanf(str, "%d", &opts->clockid) == 1) | |
cf790516 | 1905 | return get_clockid_res(opts->clockid, &opts->clockid_res_ns); |
814c8c38 PZ |
1906 | |
1907 | /* allow a "CLOCK_" prefix to the name */ | |
1908 | if (!strncasecmp(str, "CLOCK_", 6)) | |
1909 | str += 6; | |
1910 | ||
1911 | for (cm = clockids; cm->name; cm++) { | |
1912 | if (!strcasecmp(str, cm->name)) { | |
1913 | opts->clockid = cm->clockid; | |
cf790516 AB |
1914 | return get_clockid_res(opts->clockid, |
1915 | &opts->clockid_res_ns); | |
814c8c38 PZ |
1916 | } |
1917 | } | |
1918 | ||
1919 | opts->use_clockid = false; | |
1920 | ui__warning("unknown clockid %s, check man page\n", ostr); | |
1921 | return -1; | |
1922 | } | |
1923 | ||
f4fe11b7 AB |
1924 | static int record__parse_affinity(const struct option *opt, const char *str, int unset) |
1925 | { | |
1926 | struct record_opts *opts = (struct record_opts *)opt->value; | |
1927 | ||
1928 | if (unset || !str) | |
1929 | return 0; | |
1930 | ||
1931 | if (!strcasecmp(str, "node")) | |
1932 | opts->affinity = PERF_AFFINITY_NODE; | |
1933 | else if (!strcasecmp(str, "cpu")) | |
1934 | opts->affinity = PERF_AFFINITY_CPU; | |
1935 | ||
1936 | return 0; | |
1937 | } | |
1938 | ||
e9db1310 AH |
1939 | static int record__parse_mmap_pages(const struct option *opt, |
1940 | const char *str, | |
1941 | int unset __maybe_unused) | |
1942 | { | |
1943 | struct record_opts *opts = opt->value; | |
1944 | char *s, *p; | |
1945 | unsigned int mmap_pages; | |
1946 | int ret; | |
1947 | ||
1948 | if (!str) | |
1949 | return -EINVAL; | |
1950 | ||
1951 | s = strdup(str); | |
1952 | if (!s) | |
1953 | return -ENOMEM; | |
1954 | ||
1955 | p = strchr(s, ','); | |
1956 | if (p) | |
1957 | *p = '\0'; | |
1958 | ||
1959 | if (*s) { | |
1960 | ret = __perf_evlist__parse_mmap_pages(&mmap_pages, s); | |
1961 | if (ret) | |
1962 | goto out_free; | |
1963 | opts->mmap_pages = mmap_pages; | |
1964 | } | |
1965 | ||
1966 | if (!p) { | |
1967 | ret = 0; | |
1968 | goto out_free; | |
1969 | } | |
1970 | ||
1971 | ret = __perf_evlist__parse_mmap_pages(&mmap_pages, p + 1); | |
1972 | if (ret) | |
1973 | goto out_free; | |
1974 | ||
1975 | opts->auxtrace_mmap_pages = mmap_pages; | |
1976 | ||
1977 | out_free: | |
1978 | free(s); | |
1979 | return ret; | |
1980 | } | |
1981 | ||
0c582449 JO |
1982 | static void switch_output_size_warn(struct record *rec) |
1983 | { | |
9521b5f2 | 1984 | u64 wakeup_size = evlist__mmap_size(rec->opts.mmap_pages); |
0c582449 JO |
1985 | struct switch_output *s = &rec->switch_output; |
1986 | ||
1987 | wakeup_size /= 2; | |
1988 | ||
1989 | if (s->size < wakeup_size) { | |
1990 | char buf[100]; | |
1991 | ||
1992 | unit_number__scnprintf(buf, sizeof(buf), wakeup_size); | |
1993 | pr_warning("WARNING: switch-output data size lower than " | |
1994 | "wakeup kernel buffer size (%s) " | |
1995 | "expect bigger perf.data sizes\n", buf); | |
1996 | } | |
1997 | } | |
1998 | ||
cb4e1ebb JO |
1999 | static int switch_output_setup(struct record *rec) |
2000 | { | |
2001 | struct switch_output *s = &rec->switch_output; | |
dc0c6127 JO |
2002 | static struct parse_tag tags_size[] = { |
2003 | { .tag = 'B', .mult = 1 }, | |
2004 | { .tag = 'K', .mult = 1 << 10 }, | |
2005 | { .tag = 'M', .mult = 1 << 20 }, | |
2006 | { .tag = 'G', .mult = 1 << 30 }, | |
2007 | { .tag = 0 }, | |
2008 | }; | |
bfacbe3b JO |
2009 | static struct parse_tag tags_time[] = { |
2010 | { .tag = 's', .mult = 1 }, | |
2011 | { .tag = 'm', .mult = 60 }, | |
2012 | { .tag = 'h', .mult = 60*60 }, | |
2013 | { .tag = 'd', .mult = 60*60*24 }, | |
2014 | { .tag = 0 }, | |
2015 | }; | |
dc0c6127 | 2016 | unsigned long val; |
cb4e1ebb JO |
2017 | |
2018 | if (!s->set) | |
2019 | return 0; | |
2020 | ||
2021 | if (!strcmp(s->str, "signal")) { | |
2022 | s->signal = true; | |
2023 | pr_debug("switch-output with SIGUSR2 signal\n"); | |
dc0c6127 JO |
2024 | goto enabled; |
2025 | } | |
2026 | ||
2027 | val = parse_tag_value(s->str, tags_size); | |
2028 | if (val != (unsigned long) -1) { | |
2029 | s->size = val; | |
2030 | pr_debug("switch-output with %s size threshold\n", s->str); | |
2031 | goto enabled; | |
cb4e1ebb JO |
2032 | } |
2033 | ||
bfacbe3b JO |
2034 | val = parse_tag_value(s->str, tags_time); |
2035 | if (val != (unsigned long) -1) { | |
2036 | s->time = val; | |
2037 | pr_debug("switch-output with %s time threshold (%lu seconds)\n", | |
2038 | s->str, s->time); | |
2039 | goto enabled; | |
2040 | } | |
2041 | ||
cb4e1ebb | 2042 | return -1; |
dc0c6127 JO |
2043 | |
2044 | enabled: | |
2045 | rec->timestamp_filename = true; | |
2046 | s->enabled = true; | |
0c582449 JO |
2047 | |
2048 | if (s->size && !rec->opts.no_buffering) | |
2049 | switch_output_size_warn(rec); | |
2050 | ||
dc0c6127 | 2051 | return 0; |
cb4e1ebb JO |
2052 | } |
2053 | ||
e5b2c207 | 2054 | static const char * const __record_usage[] = { |
9e096753 MG |
2055 | "perf record [<options>] [<command>]", |
2056 | "perf record [<options>] -- <command> [<options>]", | |
0e9b20b8 IM |
2057 | NULL |
2058 | }; | |
e5b2c207 | 2059 | const char * const *record_usage = __record_usage; |
0e9b20b8 | 2060 | |
d20deb64 | 2061 | /* |
8c6f45a7 ACM |
2062 | * XXX Ideally would be local to cmd_record() and passed to a record__new |
2063 | * because we need to have access to it in record__exit, that is called | |
d20deb64 ACM |
2064 | * after cmd_record() exits, but since record_options need to be accessible to |
2065 | * builtin-script, leave it here. | |
2066 | * | |
2067 | * At least we don't ouch it in all the other functions here directly. | |
2068 | * | |
2069 | * Just say no to tons of global variables, sigh. | |
2070 | */ | |
8c6f45a7 | 2071 | static struct record record = { |
d20deb64 | 2072 | .opts = { |
8affc2b8 | 2073 | .sample_time = true, |
d20deb64 ACM |
2074 | .mmap_pages = UINT_MAX, |
2075 | .user_freq = UINT_MAX, | |
2076 | .user_interval = ULLONG_MAX, | |
447a6013 | 2077 | .freq = 4000, |
d1cb9fce NK |
2078 | .target = { |
2079 | .uses_mmap = true, | |
3aa5939d | 2080 | .default_per_cpu = true, |
d1cb9fce | 2081 | }, |
470530bb | 2082 | .mmap_flush = MMAP_FLUSH_DEFAULT, |
d20deb64 | 2083 | }, |
e3d59112 NK |
2084 | .tool = { |
2085 | .sample = process_sample_event, | |
2086 | .fork = perf_event__process_fork, | |
cca8482c | 2087 | .exit = perf_event__process_exit, |
e3d59112 | 2088 | .comm = perf_event__process_comm, |
f3b3614a | 2089 | .namespaces = perf_event__process_namespaces, |
e3d59112 NK |
2090 | .mmap = perf_event__process_mmap, |
2091 | .mmap2 = perf_event__process_mmap2, | |
cca8482c | 2092 | .ordered_events = true, |
e3d59112 | 2093 | }, |
d20deb64 | 2094 | }; |
7865e817 | 2095 | |
76a26549 NK |
2096 | const char record_callchain_help[] = CALLCHAIN_RECORD_HELP |
2097 | "\n\t\t\t\tDefault: fp"; | |
61eaa3be | 2098 | |
0aab2136 WN |
2099 | static bool dry_run; |
2100 | ||
d20deb64 ACM |
2101 | /* |
2102 | * XXX Will stay a global variable till we fix builtin-script.c to stop messing | |
2103 | * with it and switch to use the library functions in perf_evlist that came | |
b4006796 | 2104 | * from builtin-record.c, i.e. use record_opts, |
d20deb64 ACM |
2105 | * perf_evlist__prepare_workload, etc instead of fork+exec'in 'perf record', |
2106 | * using pipes, etc. | |
2107 | */ | |
efd21307 | 2108 | static struct option __record_options[] = { |
d20deb64 | 2109 | OPT_CALLBACK('e', "event", &record.evlist, "event", |
86847b62 | 2110 | "event selector. use 'perf list' to list available events", |
f120f9d5 | 2111 | parse_events_option), |
d20deb64 | 2112 | OPT_CALLBACK(0, "filter", &record.evlist, "filter", |
c171b552 | 2113 | "event filter", parse_filter), |
4ba1faa1 WN |
2114 | OPT_CALLBACK_NOOPT(0, "exclude-perf", &record.evlist, |
2115 | NULL, "don't record events from perf itself", | |
2116 | exclude_perf), | |
bea03405 | 2117 | OPT_STRING('p', "pid", &record.opts.target.pid, "pid", |
d6d901c2 | 2118 | "record events on existing process id"), |
bea03405 | 2119 | OPT_STRING('t', "tid", &record.opts.target.tid, "tid", |
d6d901c2 | 2120 | "record events on existing thread id"), |
d20deb64 | 2121 | OPT_INTEGER('r', "realtime", &record.realtime_prio, |
0e9b20b8 | 2122 | "collect data with this RT SCHED_FIFO priority"), |
509051ea | 2123 | OPT_BOOLEAN(0, "no-buffering", &record.opts.no_buffering, |
acac03fa | 2124 | "collect data without buffering"), |
d20deb64 | 2125 | OPT_BOOLEAN('R', "raw-samples", &record.opts.raw_samples, |
daac07b2 | 2126 | "collect raw sample records from all opened counters"), |
bea03405 | 2127 | OPT_BOOLEAN('a', "all-cpus", &record.opts.target.system_wide, |
0e9b20b8 | 2128 | "system-wide collection from all CPUs"), |
bea03405 | 2129 | OPT_STRING('C', "cpu", &record.opts.target.cpu_list, "cpu", |
c45c6ea2 | 2130 | "list of cpus to monitor"), |
d20deb64 | 2131 | OPT_U64('c', "count", &record.opts.user_interval, "event period to sample"), |
2d4f2799 | 2132 | OPT_STRING('o', "output", &record.data.path, "file", |
abaff32a | 2133 | "output file name"), |
69e7e5b0 AH |
2134 | OPT_BOOLEAN_SET('i', "no-inherit", &record.opts.no_inherit, |
2135 | &record.opts.no_inherit_set, | |
2136 | "child tasks do not inherit counters"), | |
4ea648ae WN |
2137 | OPT_BOOLEAN(0, "tail-synthesize", &record.opts.tail_synthesize, |
2138 | "synthesize non-sample events at the end of output"), | |
626a6b78 | 2139 | OPT_BOOLEAN(0, "overwrite", &record.opts.overwrite, "use overwrite mode"), |
71184c6a | 2140 | OPT_BOOLEAN(0, "no-bpf-event", &record.opts.no_bpf_event, "record bpf events"), |
b09c2364 ACM |
2141 | OPT_BOOLEAN(0, "strict-freq", &record.opts.strict_freq, |
2142 | "Fail if the specified frequency can't be used"), | |
67230479 ACM |
2143 | OPT_CALLBACK('F', "freq", &record.opts, "freq or 'max'", |
2144 | "profile at this frequency", | |
2145 | record__parse_freq), | |
e9db1310 AH |
2146 | OPT_CALLBACK('m', "mmap-pages", &record.opts, "pages[,pages]", |
2147 | "number of mmap data pages and AUX area tracing mmap pages", | |
2148 | record__parse_mmap_pages), | |
470530bb AB |
2149 | OPT_CALLBACK(0, "mmap-flush", &record.opts, "number", |
2150 | "Minimal number of bytes that is extracted from mmap data pages (default: 1)", | |
2151 | record__mmap_flush_parse), | |
d20deb64 | 2152 | OPT_BOOLEAN(0, "group", &record.opts.group, |
43bece79 | 2153 | "put the counters into a counter group"), |
2ddd5c04 | 2154 | OPT_CALLBACK_NOOPT('g', NULL, &callchain_param, |
09b0fd45 JO |
2155 | NULL, "enables call-graph recording" , |
2156 | &record_callchain_opt), | |
2157 | OPT_CALLBACK(0, "call-graph", &record.opts, | |
76a26549 | 2158 | "record_mode[,record_size]", record_callchain_help, |
09b0fd45 | 2159 | &record_parse_callchain_opt), |
c0555642 | 2160 | OPT_INCR('v', "verbose", &verbose, |
3da297a6 | 2161 | "be more verbose (show counter open errors, etc)"), |
b44308f5 | 2162 | OPT_BOOLEAN('q', "quiet", &quiet, "don't print any message"), |
d20deb64 | 2163 | OPT_BOOLEAN('s', "stat", &record.opts.inherit_stat, |
649c48a9 | 2164 | "per thread counts"), |
56100321 | 2165 | OPT_BOOLEAN('d', "data", &record.opts.sample_address, "Record the sample addresses"), |
3b0a5daa KL |
2166 | OPT_BOOLEAN(0, "phys-data", &record.opts.sample_phys_addr, |
2167 | "Record the sample physical addresses"), | |
b6f35ed7 | 2168 | OPT_BOOLEAN(0, "sample-cpu", &record.opts.sample_cpu, "Record the sample cpu"), |
3abebc55 AH |
2169 | OPT_BOOLEAN_SET('T', "timestamp", &record.opts.sample_time, |
2170 | &record.opts.sample_time_set, | |
2171 | "Record the sample timestamps"), | |
f290aa1f JO |
2172 | OPT_BOOLEAN_SET('P', "period", &record.opts.period, &record.opts.period_set, |
2173 | "Record the sample period"), | |
d20deb64 | 2174 | OPT_BOOLEAN('n', "no-samples", &record.opts.no_samples, |
649c48a9 | 2175 | "don't sample"), |
d2db9a98 WN |
2176 | OPT_BOOLEAN_SET('N', "no-buildid-cache", &record.no_buildid_cache, |
2177 | &record.no_buildid_cache_set, | |
2178 | "do not update the buildid cache"), | |
2179 | OPT_BOOLEAN_SET('B', "no-buildid", &record.no_buildid, | |
2180 | &record.no_buildid_set, | |
2181 | "do not collect buildids in perf.data"), | |
d20deb64 | 2182 | OPT_CALLBACK('G', "cgroup", &record.evlist, "name", |
023695d9 SE |
2183 | "monitor event in cgroup name only", |
2184 | parse_cgroups), | |
a6205a35 | 2185 | OPT_UINTEGER('D', "delay", &record.opts.initial_delay, |
6619a53e | 2186 | "ms to wait before starting measurement after program start"), |
bea03405 NK |
2187 | OPT_STRING('u', "uid", &record.opts.target.uid_str, "user", |
2188 | "user to profile"), | |
a5aabdac SE |
2189 | |
2190 | OPT_CALLBACK_NOOPT('b', "branch-any", &record.opts.branch_stack, | |
2191 | "branch any", "sample any taken branches", | |
2192 | parse_branch_stack), | |
2193 | ||
2194 | OPT_CALLBACK('j', "branch-filter", &record.opts.branch_stack, | |
2195 | "branch filter mask", "branch stack filter modes", | |
bdfebd84 | 2196 | parse_branch_stack), |
05484298 AK |
2197 | OPT_BOOLEAN('W', "weight", &record.opts.sample_weight, |
2198 | "sample by weight (on special events only)"), | |
475eeab9 AK |
2199 | OPT_BOOLEAN(0, "transaction", &record.opts.sample_transaction, |
2200 | "sample transaction flags (special events only)"), | |
3aa5939d AH |
2201 | OPT_BOOLEAN(0, "per-thread", &record.opts.target.per_thread, |
2202 | "use per-thread mmaps"), | |
bcc84ec6 SE |
2203 | OPT_CALLBACK_OPTARG('I', "intr-regs", &record.opts.sample_intr_regs, NULL, "any register", |
2204 | "sample selected machine registers on interrupt," | |
aeea9062 | 2205 | " use '-I?' to list register names", parse_intr_regs), |
84c41742 AK |
2206 | OPT_CALLBACK_OPTARG(0, "user-regs", &record.opts.sample_user_regs, NULL, "any register", |
2207 | "sample selected machine registers on interrupt," | |
aeea9062 | 2208 | " use '--user-regs=?' to list register names", parse_user_regs), |
85c273d2 AK |
2209 | OPT_BOOLEAN(0, "running-time", &record.opts.running_time, |
2210 | "Record running/enabled time of read (:S) events"), | |
814c8c38 PZ |
2211 | OPT_CALLBACK('k', "clockid", &record.opts, |
2212 | "clockid", "clockid to use for events, see clock_gettime()", | |
2213 | parse_clockid), | |
2dd6d8a1 AH |
2214 | OPT_STRING_OPTARG('S', "snapshot", &record.opts.auxtrace_snapshot_opts, |
2215 | "opts", "AUX area tracing Snapshot Mode", ""), | |
3fcb10e4 | 2216 | OPT_UINTEGER(0, "proc-map-timeout", &proc_map_timeout, |
9d9cad76 | 2217 | "per thread proc mmap processing timeout in ms"), |
f3b3614a HB |
2218 | OPT_BOOLEAN(0, "namespaces", &record.opts.record_namespaces, |
2219 | "Record namespaces events"), | |
b757bb09 AH |
2220 | OPT_BOOLEAN(0, "switch-events", &record.opts.record_switch_events, |
2221 | "Record context switch events"), | |
85723885 JO |
2222 | OPT_BOOLEAN_FLAG(0, "all-kernel", &record.opts.all_kernel, |
2223 | "Configure all used events to run in kernel space.", | |
2224 | PARSE_OPT_EXCLUSIVE), | |
2225 | OPT_BOOLEAN_FLAG(0, "all-user", &record.opts.all_user, | |
2226 | "Configure all used events to run in user space.", | |
2227 | PARSE_OPT_EXCLUSIVE), | |
53651b28 | 2228 | OPT_BOOLEAN(0, "kernel-callchains", &record.opts.kernel_callchains, |
2229 | "collect kernel callchains"), | |
2230 | OPT_BOOLEAN(0, "user-callchains", &record.opts.user_callchains, | |
2231 | "collect user callchains"), | |
71dc2326 WN |
2232 | OPT_STRING(0, "clang-path", &llvm_param.clang_path, "clang path", |
2233 | "clang binary to use for compiling BPF scriptlets"), | |
2234 | OPT_STRING(0, "clang-opt", &llvm_param.clang_opt, "clang options", | |
2235 | "options passed to clang when compiling BPF scriptlets"), | |
7efe0e03 HK |
2236 | OPT_STRING(0, "vmlinux", &symbol_conf.vmlinux_name, |
2237 | "file", "vmlinux pathname"), | |
6156681b NK |
2238 | OPT_BOOLEAN(0, "buildid-all", &record.buildid_all, |
2239 | "Record build-id of all DSOs regardless of hits"), | |
ecfd7a9c WN |
2240 | OPT_BOOLEAN(0, "timestamp-filename", &record.timestamp_filename, |
2241 | "append timestamp to output filename"), | |
68588baf JY |
2242 | OPT_BOOLEAN(0, "timestamp-boundary", &record.timestamp_boundary, |
2243 | "Record timestamp boundary (time of first/last samples)"), | |
cb4e1ebb | 2244 | OPT_STRING_OPTARG_SET(0, "switch-output", &record.switch_output.str, |
c38dab7d AK |
2245 | &record.switch_output.set, "signal or size[BKMG] or time[smhd]", |
2246 | "Switch output when receiving SIGUSR2 (signal) or cross a size or time threshold", | |
dc0c6127 | 2247 | "signal"), |
03724b2e AK |
2248 | OPT_INTEGER(0, "switch-max-files", &record.switch_output.num_files, |
2249 | "Limit number of switch output generated files"), | |
0aab2136 WN |
2250 | OPT_BOOLEAN(0, "dry-run", &dry_run, |
2251 | "Parse options then exit"), | |
d3d1af6f | 2252 | #ifdef HAVE_AIO_SUPPORT |
93f20c0f AB |
2253 | OPT_CALLBACK_OPTARG(0, "aio", &record.opts, |
2254 | &nr_cblocks_default, "n", "Use <n> control blocks in asynchronous trace writing mode (default: 1, max: 4)", | |
d3d1af6f AB |
2255 | record__aio_parse), |
2256 | #endif | |
f4fe11b7 AB |
2257 | OPT_CALLBACK(0, "affinity", &record.opts, "node|cpu", |
2258 | "Set affinity mask of trace reading thread to NUMA node cpu mask or cpu of processed mmap buffer", | |
2259 | record__parse_affinity), | |
504c1ad1 AB |
2260 | #ifdef HAVE_ZSTD_SUPPORT |
2261 | OPT_CALLBACK_OPTARG('z', "compression-level", &record.opts, &comp_level_default, | |
2262 | "n", "Compressed records using specified level (default: 1 - fastest compression, 22 - greatest compression)", | |
2263 | record__parse_comp_level), | |
2264 | #endif | |
0e9b20b8 IM |
2265 | OPT_END() |
2266 | }; | |
2267 | ||
e5b2c207 NK |
2268 | struct option *record_options = __record_options; |
2269 | ||
b0ad8ea6 | 2270 | int cmd_record(int argc, const char **argv) |
0e9b20b8 | 2271 | { |
ef149c25 | 2272 | int err; |
8c6f45a7 | 2273 | struct record *rec = &record; |
16ad2ffb | 2274 | char errbuf[BUFSIZ]; |
0e9b20b8 | 2275 | |
67230479 ACM |
2276 | setlocale(LC_ALL, ""); |
2277 | ||
48e1cab1 WN |
2278 | #ifndef HAVE_LIBBPF_SUPPORT |
2279 | # define set_nobuild(s, l, c) set_option_nobuild(record_options, s, l, "NO_LIBBPF=1", c) | |
2280 | set_nobuild('\0', "clang-path", true); | |
2281 | set_nobuild('\0', "clang-opt", true); | |
2282 | # undef set_nobuild | |
7efe0e03 HK |
2283 | #endif |
2284 | ||
2285 | #ifndef HAVE_BPF_PROLOGUE | |
2286 | # if !defined (HAVE_DWARF_SUPPORT) | |
2287 | # define REASON "NO_DWARF=1" | |
2288 | # elif !defined (HAVE_LIBBPF_SUPPORT) | |
2289 | # define REASON "NO_LIBBPF=1" | |
2290 | # else | |
2291 | # define REASON "this architecture doesn't support BPF prologue" | |
2292 | # endif | |
2293 | # define set_nobuild(s, l, c) set_option_nobuild(record_options, s, l, REASON, c) | |
2294 | set_nobuild('\0', "vmlinux", true); | |
2295 | # undef set_nobuild | |
2296 | # undef REASON | |
48e1cab1 WN |
2297 | #endif |
2298 | ||
9d2ed645 AB |
2299 | CPU_ZERO(&rec->affinity_mask); |
2300 | rec->opts.affinity = PERF_AFFINITY_SYS; | |
2301 | ||
0f98b11c | 2302 | rec->evlist = evlist__new(); |
3e2be2da | 2303 | if (rec->evlist == NULL) |
361c99a6 ACM |
2304 | return -ENOMEM; |
2305 | ||
ecc4c561 ACM |
2306 | err = perf_config(perf_record_config, rec); |
2307 | if (err) | |
2308 | return err; | |
eb853e80 | 2309 | |
bca647aa | 2310 | argc = parse_options(argc, argv, record_options, record_usage, |
655000e7 | 2311 | PARSE_OPT_STOP_AT_NON_OPTION); |
68ba3235 NK |
2312 | if (quiet) |
2313 | perf_quiet_option(); | |
483635a9 JO |
2314 | |
2315 | /* Make system wide (-a) the default target. */ | |
602ad878 | 2316 | if (!argc && target__none(&rec->opts.target)) |
483635a9 | 2317 | rec->opts.target.system_wide = true; |
0e9b20b8 | 2318 | |
bea03405 | 2319 | if (nr_cgroups && !rec->opts.target.system_wide) { |
c7118369 NK |
2320 | usage_with_options_msg(record_usage, record_options, |
2321 | "cgroup monitoring only available in system-wide mode"); | |
2322 | ||
023695d9 | 2323 | } |
504c1ad1 AB |
2324 | |
2325 | if (rec->opts.comp_level != 0) { | |
2326 | pr_debug("Compression enabled, disabling build id collection at the end of the session.\n"); | |
2327 | rec->no_buildid = true; | |
2328 | } | |
2329 | ||
b757bb09 AH |
2330 | if (rec->opts.record_switch_events && |
2331 | !perf_can_record_switch_events()) { | |
c7118369 NK |
2332 | ui__error("kernel does not support recording context switch events\n"); |
2333 | parse_options_usage(record_usage, record_options, "switch-events", 0); | |
2334 | return -EINVAL; | |
b757bb09 | 2335 | } |
023695d9 | 2336 | |
cb4e1ebb JO |
2337 | if (switch_output_setup(rec)) { |
2338 | parse_options_usage(record_usage, record_options, "switch-output", 0); | |
2339 | return -EINVAL; | |
2340 | } | |
2341 | ||
bfacbe3b JO |
2342 | if (rec->switch_output.time) { |
2343 | signal(SIGALRM, alarm_sig_handler); | |
2344 | alarm(rec->switch_output.time); | |
2345 | } | |
2346 | ||
03724b2e AK |
2347 | if (rec->switch_output.num_files) { |
2348 | rec->switch_output.filenames = calloc(sizeof(char *), | |
2349 | rec->switch_output.num_files); | |
2350 | if (!rec->switch_output.filenames) | |
2351 | return -EINVAL; | |
2352 | } | |
2353 | ||
1b36c03e AH |
2354 | /* |
2355 | * Allow aliases to facilitate the lookup of symbols for address | |
2356 | * filters. Refer to auxtrace_parse_filters(). | |
2357 | */ | |
2358 | symbol_conf.allow_aliases = true; | |
2359 | ||
2360 | symbol__init(NULL); | |
2361 | ||
4b5ea3bd | 2362 | err = record__auxtrace_init(rec); |
1b36c03e AH |
2363 | if (err) |
2364 | goto out; | |
2365 | ||
0aab2136 | 2366 | if (dry_run) |
5c01ad60 | 2367 | goto out; |
0aab2136 | 2368 | |
d7888573 WN |
2369 | err = bpf__setup_stdout(rec->evlist); |
2370 | if (err) { | |
2371 | bpf__strerror_setup_stdout(rec->evlist, err, errbuf, sizeof(errbuf)); | |
2372 | pr_err("ERROR: Setup BPF stdout failed: %s\n", | |
2373 | errbuf); | |
5c01ad60 | 2374 | goto out; |
d7888573 WN |
2375 | } |
2376 | ||
ef149c25 AH |
2377 | err = -ENOMEM; |
2378 | ||
0c1d46a8 | 2379 | if (rec->no_buildid_cache || rec->no_buildid) { |
a1ac1d3c | 2380 | disable_buildid_cache(); |
dc0c6127 | 2381 | } else if (rec->switch_output.enabled) { |
0c1d46a8 WN |
2382 | /* |
2383 | * In 'perf record --switch-output', disable buildid | |
2384 | * generation by default to reduce data file switching | |
2385 | * overhead. Still generate buildid if they are required | |
2386 | * explicitly using | |
2387 | * | |
60437ac0 | 2388 | * perf record --switch-output --no-no-buildid \ |
0c1d46a8 WN |
2389 | * --no-no-buildid-cache |
2390 | * | |
2391 | * Following code equals to: | |
2392 | * | |
2393 | * if ((rec->no_buildid || !rec->no_buildid_set) && | |
2394 | * (rec->no_buildid_cache || !rec->no_buildid_cache_set)) | |
2395 | * disable_buildid_cache(); | |
2396 | */ | |
2397 | bool disable = true; | |
2398 | ||
2399 | if (rec->no_buildid_set && !rec->no_buildid) | |
2400 | disable = false; | |
2401 | if (rec->no_buildid_cache_set && !rec->no_buildid_cache) | |
2402 | disable = false; | |
2403 | if (disable) { | |
2404 | rec->no_buildid = true; | |
2405 | rec->no_buildid_cache = true; | |
2406 | disable_buildid_cache(); | |
2407 | } | |
2408 | } | |
655000e7 | 2409 | |
4ea648ae WN |
2410 | if (record.opts.overwrite) |
2411 | record.opts.tail_synthesize = true; | |
2412 | ||
6484d2f9 | 2413 | if (rec->evlist->core.nr_entries == 0 && |
4b4cd503 | 2414 | __perf_evlist__add_default(rec->evlist, !record.opts.no_samples) < 0) { |
69aad6f1 | 2415 | pr_err("Not enough memory for event selector list\n"); |
394c01ed | 2416 | goto out; |
bbd36e5e | 2417 | } |
0e9b20b8 | 2418 | |
69e7e5b0 AH |
2419 | if (rec->opts.target.tid && !rec->opts.no_inherit_set) |
2420 | rec->opts.no_inherit = true; | |
2421 | ||
602ad878 | 2422 | err = target__validate(&rec->opts.target); |
16ad2ffb | 2423 | if (err) { |
602ad878 | 2424 | target__strerror(&rec->opts.target, err, errbuf, BUFSIZ); |
c3dec27b | 2425 | ui__warning("%s\n", errbuf); |
16ad2ffb NK |
2426 | } |
2427 | ||
602ad878 | 2428 | err = target__parse_uid(&rec->opts.target); |
16ad2ffb NK |
2429 | if (err) { |
2430 | int saved_errno = errno; | |
4bd0f2d2 | 2431 | |
602ad878 | 2432 | target__strerror(&rec->opts.target, err, errbuf, BUFSIZ); |
3780f488 | 2433 | ui__error("%s", errbuf); |
16ad2ffb NK |
2434 | |
2435 | err = -saved_errno; | |
394c01ed | 2436 | goto out; |
16ad2ffb | 2437 | } |
0d37aa34 | 2438 | |
ca800068 MZ |
2439 | /* Enable ignoring missing threads when -u/-p option is defined. */ |
2440 | rec->opts.ignore_missing_thread = rec->opts.target.uid != UINT_MAX || rec->opts.target.pid; | |
23dc4f15 | 2441 | |
16ad2ffb | 2442 | err = -ENOMEM; |
3e2be2da | 2443 | if (perf_evlist__create_maps(rec->evlist, &rec->opts.target) < 0) |
dd7927f4 | 2444 | usage_with_options(record_usage, record_options); |
69aad6f1 | 2445 | |
ef149c25 AH |
2446 | err = auxtrace_record__options(rec->itr, rec->evlist, &rec->opts); |
2447 | if (err) | |
394c01ed | 2448 | goto out; |
ef149c25 | 2449 | |
6156681b NK |
2450 | /* |
2451 | * We take all buildids when the file contains | |
2452 | * AUX area tracing data because we do not decode the | |
2453 | * trace because it would take too long. | |
2454 | */ | |
2455 | if (rec->opts.full_auxtrace) | |
2456 | rec->buildid_all = true; | |
2457 | ||
b4006796 | 2458 | if (record_opts__config(&rec->opts)) { |
39d17dac | 2459 | err = -EINVAL; |
394c01ed | 2460 | goto out; |
7e4ff9e3 MG |
2461 | } |
2462 | ||
93f20c0f AB |
2463 | if (rec->opts.nr_cblocks > nr_cblocks_max) |
2464 | rec->opts.nr_cblocks = nr_cblocks_max; | |
5d7f4116 | 2465 | pr_debug("nr_cblocks: %d\n", rec->opts.nr_cblocks); |
d3d1af6f | 2466 | |
9d2ed645 | 2467 | pr_debug("affinity: %s\n", affinity_tags[rec->opts.affinity]); |
470530bb | 2468 | pr_debug("mmap flush: %d\n", rec->opts.mmap_flush); |
9d2ed645 | 2469 | |
51255a8a AB |
2470 | if (rec->opts.comp_level > comp_level_max) |
2471 | rec->opts.comp_level = comp_level_max; | |
2472 | pr_debug("comp level: %d\n", rec->opts.comp_level); | |
2473 | ||
d20deb64 | 2474 | err = __cmd_record(&record, argc, argv); |
394c01ed | 2475 | out: |
c12995a5 | 2476 | evlist__delete(rec->evlist); |
d65a458b | 2477 | symbol__exit(); |
ef149c25 | 2478 | auxtrace_record__free(rec->itr); |
39d17dac | 2479 | return err; |
0e9b20b8 | 2480 | } |
2dd6d8a1 AH |
2481 | |
2482 | static void snapshot_sig_handler(int sig __maybe_unused) | |
2483 | { | |
dc0c6127 JO |
2484 | struct record *rec = &record; |
2485 | ||
5f9cf599 WN |
2486 | if (trigger_is_ready(&auxtrace_snapshot_trigger)) { |
2487 | trigger_hit(&auxtrace_snapshot_trigger); | |
2488 | auxtrace_record__snapshot_started = 1; | |
2489 | if (auxtrace_record__snapshot_start(record.itr)) | |
2490 | trigger_error(&auxtrace_snapshot_trigger); | |
2491 | } | |
3c1cb7e3 | 2492 | |
dc0c6127 | 2493 | if (switch_output_signal(rec)) |
3c1cb7e3 | 2494 | trigger_hit(&switch_output_trigger); |
2dd6d8a1 | 2495 | } |
bfacbe3b JO |
2496 | |
2497 | static void alarm_sig_handler(int sig __maybe_unused) | |
2498 | { | |
2499 | struct record *rec = &record; | |
2500 | ||
2501 | if (switch_output_time(rec)) | |
2502 | trigger_hit(&switch_output_trigger); | |
2503 | } |