Commit | Line | Data |
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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" |
40c7d246 | 37 | #include "util/perf_api_probe.h" |
71dc2326 | 38 | #include "util/llvm-utils.h" |
8690a2a7 | 39 | #include "util/bpf-loader.h" |
5f9cf599 | 40 | #include "util/trigger.h" |
a074865e | 41 | #include "util/perf-hooks.h" |
f13de660 | 42 | #include "util/cpu-set-sched.h" |
ea49e01c | 43 | #include "util/synthetic-events.h" |
c5e4027e | 44 | #include "util/time-utils.h" |
58db1d6e | 45 | #include "util/units.h" |
7b612e29 | 46 | #include "util/bpf-event.h" |
d99c22ea | 47 | #include "util/util.h" |
70943490 | 48 | #include "util/pfm.h" |
6953beb4 | 49 | #include "util/clockid.h" |
b53a0755 JY |
50 | #include "util/pmu-hybrid.h" |
51 | #include "util/evlist-hybrid.h" | |
d8871ea7 | 52 | #include "asm/bug.h" |
c1a604df | 53 | #include "perf.h" |
7c6a1c65 | 54 | |
a43783ae | 55 | #include <errno.h> |
fd20e811 | 56 | #include <inttypes.h> |
67230479 | 57 | #include <locale.h> |
4208735d | 58 | #include <poll.h> |
d99c22ea | 59 | #include <pthread.h> |
97124d5e | 60 | #include <unistd.h> |
de9ac07b | 61 | #include <sched.h> |
9607ad3a | 62 | #include <signal.h> |
da231338 AM |
63 | #ifdef HAVE_EVENTFD_SUPPORT |
64 | #include <sys/eventfd.h> | |
65 | #endif | |
a41794cd | 66 | #include <sys/mman.h> |
4208735d | 67 | #include <sys/wait.h> |
eeb399b5 AH |
68 | #include <sys/types.h> |
69 | #include <sys/stat.h> | |
70 | #include <fcntl.h> | |
6ef81c55 | 71 | #include <linux/err.h> |
8520a98d | 72 | #include <linux/string.h> |
0693e680 | 73 | #include <linux/time64.h> |
d8f9da24 | 74 | #include <linux/zalloc.h> |
8384a260 | 75 | #include <linux/bitmap.h> |
d1e325cf | 76 | #include <sys/time.h> |
78da39fa | 77 | |
1b43b704 | 78 | struct switch_output { |
dc0c6127 | 79 | bool enabled; |
1b43b704 | 80 | bool signal; |
dc0c6127 | 81 | unsigned long size; |
bfacbe3b | 82 | unsigned long time; |
cb4e1ebb JO |
83 | const char *str; |
84 | bool set; | |
03724b2e AK |
85 | char **filenames; |
86 | int num_files; | |
87 | int cur_file; | |
1b43b704 JO |
88 | }; |
89 | ||
8c6f45a7 | 90 | struct record { |
45694aa7 | 91 | struct perf_tool tool; |
b4006796 | 92 | struct record_opts opts; |
d20deb64 | 93 | u64 bytes_written; |
8ceb41d7 | 94 | struct perf_data data; |
ef149c25 | 95 | struct auxtrace_record *itr; |
63503dba | 96 | struct evlist *evlist; |
d20deb64 | 97 | struct perf_session *session; |
bc477d79 | 98 | struct evlist *sb_evlist; |
899e5ffb | 99 | pthread_t thread_id; |
d20deb64 | 100 | int realtime_prio; |
899e5ffb | 101 | bool switch_output_event_set; |
d20deb64 | 102 | bool no_buildid; |
d2db9a98 | 103 | bool no_buildid_set; |
d20deb64 | 104 | bool no_buildid_cache; |
d2db9a98 | 105 | bool no_buildid_cache_set; |
6156681b | 106 | bool buildid_all; |
e29386c8 | 107 | bool buildid_mmap; |
ecfd7a9c | 108 | bool timestamp_filename; |
68588baf | 109 | bool timestamp_boundary; |
1b43b704 | 110 | struct switch_output switch_output; |
9f065194 | 111 | unsigned long long samples; |
8384a260 | 112 | struct mmap_cpu_mask affinity_mask; |
6d575816 | 113 | unsigned long output_max_size; /* = 0: unlimited */ |
0f82ebc4 | 114 | }; |
a21ca2ca | 115 | |
6d575816 JS |
116 | static volatile int done; |
117 | ||
dc0c6127 JO |
118 | static volatile int auxtrace_record__snapshot_started; |
119 | static DEFINE_TRIGGER(auxtrace_snapshot_trigger); | |
120 | static DEFINE_TRIGGER(switch_output_trigger); | |
121 | ||
9d2ed645 AB |
122 | static const char *affinity_tags[PERF_AFFINITY_MAX] = { |
123 | "SYS", "NODE", "CPU" | |
124 | }; | |
125 | ||
dc0c6127 JO |
126 | static bool switch_output_signal(struct record *rec) |
127 | { | |
128 | return rec->switch_output.signal && | |
129 | trigger_is_ready(&switch_output_trigger); | |
130 | } | |
131 | ||
132 | static bool switch_output_size(struct record *rec) | |
133 | { | |
134 | return rec->switch_output.size && | |
135 | trigger_is_ready(&switch_output_trigger) && | |
136 | (rec->bytes_written >= rec->switch_output.size); | |
137 | } | |
138 | ||
bfacbe3b JO |
139 | static bool switch_output_time(struct record *rec) |
140 | { | |
141 | return rec->switch_output.time && | |
142 | trigger_is_ready(&switch_output_trigger); | |
143 | } | |
144 | ||
6d575816 JS |
145 | static bool record__output_max_size_exceeded(struct record *rec) |
146 | { | |
147 | return rec->output_max_size && | |
148 | (rec->bytes_written >= rec->output_max_size); | |
149 | } | |
150 | ||
a5830532 | 151 | static int record__write(struct record *rec, struct mmap *map __maybe_unused, |
ded2b8fe | 152 | void *bf, size_t size) |
f5970550 | 153 | { |
ded2b8fe JO |
154 | struct perf_data_file *file = &rec->session->data->file; |
155 | ||
156 | if (perf_data_file__write(file, bf, size) < 0) { | |
50a9b868 JO |
157 | pr_err("failed to write perf data, error: %m\n"); |
158 | return -1; | |
f5970550 | 159 | } |
8d3eca20 | 160 | |
cf8b2e69 | 161 | rec->bytes_written += size; |
dc0c6127 | 162 | |
6d575816 JS |
163 | if (record__output_max_size_exceeded(rec) && !done) { |
164 | fprintf(stderr, "[ perf record: perf size limit reached (%" PRIu64 " KB)," | |
165 | " stopping session ]\n", | |
166 | rec->bytes_written >> 10); | |
167 | done = 1; | |
168 | } | |
169 | ||
dc0c6127 JO |
170 | if (switch_output_size(rec)) |
171 | trigger_hit(&switch_output_trigger); | |
172 | ||
8d3eca20 | 173 | return 0; |
f5970550 PZ |
174 | } |
175 | ||
ef781128 AB |
176 | static int record__aio_enabled(struct record *rec); |
177 | static int record__comp_enabled(struct record *rec); | |
5d7f4116 AB |
178 | static size_t zstd_compress(struct perf_session *session, void *dst, size_t dst_size, |
179 | void *src, size_t src_size); | |
180 | ||
d3d1af6f AB |
181 | #ifdef HAVE_AIO_SUPPORT |
182 | static int record__aio_write(struct aiocb *cblock, int trace_fd, | |
183 | void *buf, size_t size, off_t off) | |
184 | { | |
185 | int rc; | |
186 | ||
187 | cblock->aio_fildes = trace_fd; | |
188 | cblock->aio_buf = buf; | |
189 | cblock->aio_nbytes = size; | |
190 | cblock->aio_offset = off; | |
191 | cblock->aio_sigevent.sigev_notify = SIGEV_NONE; | |
192 | ||
193 | do { | |
194 | rc = aio_write(cblock); | |
195 | if (rc == 0) { | |
196 | break; | |
197 | } else if (errno != EAGAIN) { | |
198 | cblock->aio_fildes = -1; | |
199 | pr_err("failed to queue perf data, error: %m\n"); | |
200 | break; | |
201 | } | |
202 | } while (1); | |
203 | ||
204 | return rc; | |
205 | } | |
206 | ||
a5830532 | 207 | static int record__aio_complete(struct mmap *md, struct aiocb *cblock) |
d3d1af6f AB |
208 | { |
209 | void *rem_buf; | |
210 | off_t rem_off; | |
211 | size_t rem_size; | |
212 | int rc, aio_errno; | |
213 | ssize_t aio_ret, written; | |
214 | ||
215 | aio_errno = aio_error(cblock); | |
216 | if (aio_errno == EINPROGRESS) | |
217 | return 0; | |
218 | ||
219 | written = aio_ret = aio_return(cblock); | |
220 | if (aio_ret < 0) { | |
221 | if (aio_errno != EINTR) | |
222 | pr_err("failed to write perf data, error: %m\n"); | |
223 | written = 0; | |
224 | } | |
225 | ||
226 | rem_size = cblock->aio_nbytes - written; | |
227 | ||
228 | if (rem_size == 0) { | |
229 | cblock->aio_fildes = -1; | |
230 | /* | |
ef781128 AB |
231 | * md->refcount is incremented in record__aio_pushfn() for |
232 | * every aio write request started in record__aio_push() so | |
233 | * decrement it because the request is now complete. | |
d3d1af6f | 234 | */ |
80e53d11 | 235 | perf_mmap__put(&md->core); |
d3d1af6f AB |
236 | rc = 1; |
237 | } else { | |
238 | /* | |
239 | * aio write request may require restart with the | |
240 | * reminder if the kernel didn't write whole | |
241 | * chunk at once. | |
242 | */ | |
243 | rem_off = cblock->aio_offset + written; | |
244 | rem_buf = (void *)(cblock->aio_buf + written); | |
245 | record__aio_write(cblock, cblock->aio_fildes, | |
246 | rem_buf, rem_size, rem_off); | |
247 | rc = 0; | |
248 | } | |
249 | ||
250 | return rc; | |
251 | } | |
252 | ||
a5830532 | 253 | static int record__aio_sync(struct mmap *md, bool sync_all) |
d3d1af6f | 254 | { |
93f20c0f AB |
255 | struct aiocb **aiocb = md->aio.aiocb; |
256 | struct aiocb *cblocks = md->aio.cblocks; | |
d3d1af6f | 257 | struct timespec timeout = { 0, 1000 * 1000 * 1 }; /* 1ms */ |
93f20c0f | 258 | int i, do_suspend; |
d3d1af6f AB |
259 | |
260 | do { | |
93f20c0f AB |
261 | do_suspend = 0; |
262 | for (i = 0; i < md->aio.nr_cblocks; ++i) { | |
263 | if (cblocks[i].aio_fildes == -1 || record__aio_complete(md, &cblocks[i])) { | |
264 | if (sync_all) | |
265 | aiocb[i] = NULL; | |
266 | else | |
267 | return i; | |
268 | } else { | |
269 | /* | |
270 | * Started aio write is not complete yet | |
271 | * so it has to be waited before the | |
272 | * next allocation. | |
273 | */ | |
274 | aiocb[i] = &cblocks[i]; | |
275 | do_suspend = 1; | |
276 | } | |
277 | } | |
278 | if (!do_suspend) | |
279 | return -1; | |
d3d1af6f | 280 | |
93f20c0f | 281 | while (aio_suspend((const struct aiocb **)aiocb, md->aio.nr_cblocks, &timeout)) { |
d3d1af6f AB |
282 | if (!(errno == EAGAIN || errno == EINTR)) |
283 | pr_err("failed to sync perf data, error: %m\n"); | |
284 | } | |
285 | } while (1); | |
286 | } | |
287 | ||
ef781128 AB |
288 | struct record_aio { |
289 | struct record *rec; | |
290 | void *data; | |
291 | size_t size; | |
292 | }; | |
293 | ||
a5830532 | 294 | static int record__aio_pushfn(struct mmap *map, void *to, void *buf, size_t size) |
d3d1af6f | 295 | { |
ef781128 | 296 | struct record_aio *aio = to; |
d3d1af6f | 297 | |
ef781128 | 298 | /* |
547740f7 | 299 | * map->core.base data pointed by buf is copied into free map->aio.data[] buffer |
ef781128 AB |
300 | * to release space in the kernel buffer as fast as possible, calling |
301 | * perf_mmap__consume() from perf_mmap__push() function. | |
302 | * | |
303 | * That lets the kernel to proceed with storing more profiling data into | |
304 | * the kernel buffer earlier than other per-cpu kernel buffers are handled. | |
305 | * | |
306 | * Coping can be done in two steps in case the chunk of profiling data | |
307 | * crosses the upper bound of the kernel buffer. In this case we first move | |
308 | * part of data from map->start till the upper bound and then the reminder | |
309 | * from the beginning of the kernel buffer till the end of the data chunk. | |
310 | */ | |
311 | ||
312 | if (record__comp_enabled(aio->rec)) { | |
313 | size = zstd_compress(aio->rec->session, aio->data + aio->size, | |
bf59b305 | 314 | mmap__mmap_len(map) - aio->size, |
ef781128 AB |
315 | buf, size); |
316 | } else { | |
317 | memcpy(aio->data + aio->size, buf, size); | |
318 | } | |
319 | ||
320 | if (!aio->size) { | |
321 | /* | |
322 | * Increment map->refcount to guard map->aio.data[] buffer | |
323 | * from premature deallocation because map object can be | |
324 | * released earlier than aio write request started on | |
325 | * map->aio.data[] buffer is complete. | |
326 | * | |
327 | * perf_mmap__put() is done at record__aio_complete() | |
328 | * after started aio request completion or at record__aio_push() | |
329 | * if the request failed to start. | |
330 | */ | |
e75710f0 | 331 | perf_mmap__get(&map->core); |
ef781128 AB |
332 | } |
333 | ||
334 | aio->size += size; | |
335 | ||
336 | return size; | |
337 | } | |
338 | ||
a5830532 | 339 | static int record__aio_push(struct record *rec, struct mmap *map, off_t *off) |
ef781128 AB |
340 | { |
341 | int ret, idx; | |
342 | int trace_fd = rec->session->data->file.fd; | |
343 | struct record_aio aio = { .rec = rec, .size = 0 }; | |
d3d1af6f | 344 | |
ef781128 AB |
345 | /* |
346 | * Call record__aio_sync() to wait till map->aio.data[] buffer | |
347 | * becomes available after previous aio write operation. | |
348 | */ | |
349 | ||
350 | idx = record__aio_sync(map, false); | |
351 | aio.data = map->aio.data[idx]; | |
352 | ret = perf_mmap__push(map, &aio, record__aio_pushfn); | |
353 | if (ret != 0) /* ret > 0 - no data, ret < 0 - error */ | |
354 | return ret; | |
355 | ||
356 | rec->samples++; | |
357 | ret = record__aio_write(&(map->aio.cblocks[idx]), trace_fd, aio.data, aio.size, *off); | |
d3d1af6f | 358 | if (!ret) { |
ef781128 AB |
359 | *off += aio.size; |
360 | rec->bytes_written += aio.size; | |
d3d1af6f AB |
361 | if (switch_output_size(rec)) |
362 | trigger_hit(&switch_output_trigger); | |
ef781128 AB |
363 | } else { |
364 | /* | |
365 | * Decrement map->refcount incremented in record__aio_pushfn() | |
366 | * back if record__aio_write() operation failed to start, otherwise | |
367 | * map->refcount is decremented in record__aio_complete() after | |
368 | * aio write operation finishes successfully. | |
369 | */ | |
80e53d11 | 370 | perf_mmap__put(&map->core); |
d3d1af6f AB |
371 | } |
372 | ||
373 | return ret; | |
374 | } | |
375 | ||
376 | static off_t record__aio_get_pos(int trace_fd) | |
377 | { | |
378 | return lseek(trace_fd, 0, SEEK_CUR); | |
379 | } | |
380 | ||
381 | static void record__aio_set_pos(int trace_fd, off_t pos) | |
382 | { | |
383 | lseek(trace_fd, pos, SEEK_SET); | |
384 | } | |
385 | ||
386 | static void record__aio_mmap_read_sync(struct record *rec) | |
387 | { | |
388 | int i; | |
63503dba | 389 | struct evlist *evlist = rec->evlist; |
a5830532 | 390 | struct mmap *maps = evlist->mmap; |
d3d1af6f | 391 | |
ef781128 | 392 | if (!record__aio_enabled(rec)) |
d3d1af6f AB |
393 | return; |
394 | ||
c976ee11 | 395 | for (i = 0; i < evlist->core.nr_mmaps; i++) { |
a5830532 | 396 | struct mmap *map = &maps[i]; |
d3d1af6f | 397 | |
547740f7 | 398 | if (map->core.base) |
93f20c0f | 399 | record__aio_sync(map, true); |
d3d1af6f AB |
400 | } |
401 | } | |
402 | ||
403 | static int nr_cblocks_default = 1; | |
93f20c0f | 404 | static int nr_cblocks_max = 4; |
d3d1af6f AB |
405 | |
406 | static int record__aio_parse(const struct option *opt, | |
93f20c0f | 407 | const char *str, |
d3d1af6f AB |
408 | int unset) |
409 | { | |
410 | struct record_opts *opts = (struct record_opts *)opt->value; | |
411 | ||
93f20c0f | 412 | if (unset) { |
d3d1af6f | 413 | opts->nr_cblocks = 0; |
93f20c0f AB |
414 | } else { |
415 | if (str) | |
416 | opts->nr_cblocks = strtol(str, NULL, 0); | |
417 | if (!opts->nr_cblocks) | |
418 | opts->nr_cblocks = nr_cblocks_default; | |
419 | } | |
d3d1af6f AB |
420 | |
421 | return 0; | |
422 | } | |
423 | #else /* HAVE_AIO_SUPPORT */ | |
93f20c0f AB |
424 | static int nr_cblocks_max = 0; |
425 | ||
a5830532 | 426 | static int record__aio_push(struct record *rec __maybe_unused, struct mmap *map __maybe_unused, |
ef781128 | 427 | off_t *off __maybe_unused) |
d3d1af6f AB |
428 | { |
429 | return -1; | |
430 | } | |
431 | ||
432 | static off_t record__aio_get_pos(int trace_fd __maybe_unused) | |
433 | { | |
434 | return -1; | |
435 | } | |
436 | ||
437 | static void record__aio_set_pos(int trace_fd __maybe_unused, off_t pos __maybe_unused) | |
438 | { | |
439 | } | |
440 | ||
441 | static void record__aio_mmap_read_sync(struct record *rec __maybe_unused) | |
442 | { | |
443 | } | |
444 | #endif | |
445 | ||
446 | static int record__aio_enabled(struct record *rec) | |
447 | { | |
448 | return rec->opts.nr_cblocks > 0; | |
449 | } | |
450 | ||
470530bb AB |
451 | #define MMAP_FLUSH_DEFAULT 1 |
452 | static int record__mmap_flush_parse(const struct option *opt, | |
453 | const char *str, | |
454 | int unset) | |
455 | { | |
456 | int flush_max; | |
457 | struct record_opts *opts = (struct record_opts *)opt->value; | |
458 | static struct parse_tag tags[] = { | |
459 | { .tag = 'B', .mult = 1 }, | |
460 | { .tag = 'K', .mult = 1 << 10 }, | |
461 | { .tag = 'M', .mult = 1 << 20 }, | |
462 | { .tag = 'G', .mult = 1 << 30 }, | |
463 | { .tag = 0 }, | |
464 | }; | |
465 | ||
466 | if (unset) | |
467 | return 0; | |
468 | ||
469 | if (str) { | |
470 | opts->mmap_flush = parse_tag_value(str, tags); | |
471 | if (opts->mmap_flush == (int)-1) | |
472 | opts->mmap_flush = strtol(str, NULL, 0); | |
473 | } | |
474 | ||
475 | if (!opts->mmap_flush) | |
476 | opts->mmap_flush = MMAP_FLUSH_DEFAULT; | |
477 | ||
9521b5f2 | 478 | flush_max = evlist__mmap_size(opts->mmap_pages); |
470530bb AB |
479 | flush_max /= 4; |
480 | if (opts->mmap_flush > flush_max) | |
481 | opts->mmap_flush = flush_max; | |
482 | ||
483 | return 0; | |
484 | } | |
485 | ||
504c1ad1 AB |
486 | #ifdef HAVE_ZSTD_SUPPORT |
487 | static unsigned int comp_level_default = 1; | |
488 | ||
489 | static int record__parse_comp_level(const struct option *opt, const char *str, int unset) | |
490 | { | |
491 | struct record_opts *opts = opt->value; | |
492 | ||
493 | if (unset) { | |
494 | opts->comp_level = 0; | |
495 | } else { | |
496 | if (str) | |
497 | opts->comp_level = strtol(str, NULL, 0); | |
498 | if (!opts->comp_level) | |
499 | opts->comp_level = comp_level_default; | |
500 | } | |
501 | ||
502 | return 0; | |
503 | } | |
504 | #endif | |
51255a8a AB |
505 | static unsigned int comp_level_max = 22; |
506 | ||
42e1fd80 AB |
507 | static int record__comp_enabled(struct record *rec) |
508 | { | |
509 | return rec->opts.comp_level > 0; | |
510 | } | |
511 | ||
45694aa7 | 512 | static int process_synthesized_event(struct perf_tool *tool, |
d20deb64 | 513 | union perf_event *event, |
1d037ca1 IT |
514 | struct perf_sample *sample __maybe_unused, |
515 | struct machine *machine __maybe_unused) | |
234fbbf5 | 516 | { |
8c6f45a7 | 517 | struct record *rec = container_of(tool, struct record, tool); |
ded2b8fe | 518 | return record__write(rec, NULL, event, event->header.size); |
234fbbf5 ACM |
519 | } |
520 | ||
d99c22ea SE |
521 | static int process_locked_synthesized_event(struct perf_tool *tool, |
522 | union perf_event *event, | |
523 | struct perf_sample *sample __maybe_unused, | |
524 | struct machine *machine __maybe_unused) | |
525 | { | |
526 | static pthread_mutex_t synth_lock = PTHREAD_MUTEX_INITIALIZER; | |
527 | int ret; | |
528 | ||
529 | pthread_mutex_lock(&synth_lock); | |
530 | ret = process_synthesized_event(tool, event, sample, machine); | |
531 | pthread_mutex_unlock(&synth_lock); | |
532 | return ret; | |
533 | } | |
534 | ||
a5830532 | 535 | static int record__pushfn(struct mmap *map, void *to, void *bf, size_t size) |
d37f1586 ACM |
536 | { |
537 | struct record *rec = to; | |
538 | ||
5d7f4116 | 539 | if (record__comp_enabled(rec)) { |
bf59b305 | 540 | size = zstd_compress(rec->session, map->data, mmap__mmap_len(map), bf, size); |
5d7f4116 AB |
541 | bf = map->data; |
542 | } | |
543 | ||
d37f1586 | 544 | rec->samples++; |
ded2b8fe | 545 | return record__write(rec, map, bf, size); |
d37f1586 ACM |
546 | } |
547 | ||
2dd6d8a1 AH |
548 | static volatile int signr = -1; |
549 | static volatile int child_finished; | |
da231338 AM |
550 | #ifdef HAVE_EVENTFD_SUPPORT |
551 | static int done_fd = -1; | |
552 | #endif | |
c0bdc1c4 | 553 | |
2dd6d8a1 AH |
554 | static void sig_handler(int sig) |
555 | { | |
556 | if (sig == SIGCHLD) | |
557 | child_finished = 1; | |
558 | else | |
559 | signr = sig; | |
560 | ||
561 | done = 1; | |
da231338 AM |
562 | #ifdef HAVE_EVENTFD_SUPPORT |
563 | { | |
564 | u64 tmp = 1; | |
565 | /* | |
566 | * It is possible for this signal handler to run after done is checked | |
567 | * in the main loop, but before the perf counter fds are polled. If this | |
568 | * happens, the poll() will continue to wait even though done is set, | |
569 | * and will only break out if either another signal is received, or the | |
570 | * counters are ready for read. To ensure the poll() doesn't sleep when | |
571 | * done is set, use an eventfd (done_fd) to wake up the poll(). | |
572 | */ | |
573 | if (write(done_fd, &tmp, sizeof(tmp)) < 0) | |
574 | pr_err("failed to signal wakeup fd, error: %m\n"); | |
575 | } | |
576 | #endif // HAVE_EVENTFD_SUPPORT | |
2dd6d8a1 AH |
577 | } |
578 | ||
a074865e WN |
579 | static void sigsegv_handler(int sig) |
580 | { | |
581 | perf_hooks__recover(); | |
582 | sighandler_dump_stack(sig); | |
583 | } | |
584 | ||
2dd6d8a1 AH |
585 | static void record__sig_exit(void) |
586 | { | |
587 | if (signr == -1) | |
588 | return; | |
589 | ||
590 | signal(signr, SIG_DFL); | |
591 | raise(signr); | |
592 | } | |
593 | ||
e31f0d01 AH |
594 | #ifdef HAVE_AUXTRACE_SUPPORT |
595 | ||
ef149c25 | 596 | static int record__process_auxtrace(struct perf_tool *tool, |
a5830532 | 597 | struct mmap *map, |
ef149c25 AH |
598 | union perf_event *event, void *data1, |
599 | size_t len1, void *data2, size_t len2) | |
600 | { | |
601 | struct record *rec = container_of(tool, struct record, tool); | |
8ceb41d7 | 602 | struct perf_data *data = &rec->data; |
ef149c25 AH |
603 | size_t padding; |
604 | u8 pad[8] = {0}; | |
605 | ||
46e201ef | 606 | if (!perf_data__is_pipe(data) && perf_data__is_single_file(data)) { |
99fa2984 | 607 | off_t file_offset; |
8ceb41d7 | 608 | int fd = perf_data__fd(data); |
99fa2984 AH |
609 | int err; |
610 | ||
611 | file_offset = lseek(fd, 0, SEEK_CUR); | |
612 | if (file_offset == -1) | |
613 | return -1; | |
614 | err = auxtrace_index__auxtrace_event(&rec->session->auxtrace_index, | |
615 | event, file_offset); | |
616 | if (err) | |
617 | return err; | |
618 | } | |
619 | ||
ef149c25 AH |
620 | /* event.auxtrace.size includes padding, see __auxtrace_mmap__read() */ |
621 | padding = (len1 + len2) & 7; | |
622 | if (padding) | |
623 | padding = 8 - padding; | |
624 | ||
ded2b8fe JO |
625 | record__write(rec, map, event, event->header.size); |
626 | record__write(rec, map, data1, len1); | |
ef149c25 | 627 | if (len2) |
ded2b8fe JO |
628 | record__write(rec, map, data2, len2); |
629 | record__write(rec, map, &pad, padding); | |
ef149c25 AH |
630 | |
631 | return 0; | |
632 | } | |
633 | ||
634 | static int record__auxtrace_mmap_read(struct record *rec, | |
a5830532 | 635 | struct mmap *map) |
ef149c25 AH |
636 | { |
637 | int ret; | |
638 | ||
e035f4ca | 639 | ret = auxtrace_mmap__read(map, rec->itr, &rec->tool, |
ef149c25 AH |
640 | record__process_auxtrace); |
641 | if (ret < 0) | |
642 | return ret; | |
643 | ||
644 | if (ret) | |
645 | rec->samples++; | |
646 | ||
647 | return 0; | |
648 | } | |
649 | ||
2dd6d8a1 | 650 | static int record__auxtrace_mmap_read_snapshot(struct record *rec, |
a5830532 | 651 | struct mmap *map) |
2dd6d8a1 AH |
652 | { |
653 | int ret; | |
654 | ||
e035f4ca | 655 | ret = auxtrace_mmap__read_snapshot(map, rec->itr, &rec->tool, |
2dd6d8a1 AH |
656 | record__process_auxtrace, |
657 | rec->opts.auxtrace_snapshot_size); | |
658 | if (ret < 0) | |
659 | return ret; | |
660 | ||
661 | if (ret) | |
662 | rec->samples++; | |
663 | ||
664 | return 0; | |
665 | } | |
666 | ||
667 | static int record__auxtrace_read_snapshot_all(struct record *rec) | |
668 | { | |
669 | int i; | |
670 | int rc = 0; | |
671 | ||
c976ee11 | 672 | for (i = 0; i < rec->evlist->core.nr_mmaps; i++) { |
a5830532 | 673 | struct mmap *map = &rec->evlist->mmap[i]; |
2dd6d8a1 | 674 | |
e035f4ca | 675 | if (!map->auxtrace_mmap.base) |
2dd6d8a1 AH |
676 | continue; |
677 | ||
e035f4ca | 678 | if (record__auxtrace_mmap_read_snapshot(rec, map) != 0) { |
2dd6d8a1 AH |
679 | rc = -1; |
680 | goto out; | |
681 | } | |
682 | } | |
683 | out: | |
684 | return rc; | |
685 | } | |
686 | ||
ce7b0e42 | 687 | static void record__read_auxtrace_snapshot(struct record *rec, bool on_exit) |
2dd6d8a1 AH |
688 | { |
689 | pr_debug("Recording AUX area tracing snapshot\n"); | |
690 | if (record__auxtrace_read_snapshot_all(rec) < 0) { | |
5f9cf599 | 691 | trigger_error(&auxtrace_snapshot_trigger); |
2dd6d8a1 | 692 | } else { |
ce7b0e42 | 693 | if (auxtrace_record__snapshot_finish(rec->itr, on_exit)) |
5f9cf599 WN |
694 | trigger_error(&auxtrace_snapshot_trigger); |
695 | else | |
696 | trigger_ready(&auxtrace_snapshot_trigger); | |
2dd6d8a1 AH |
697 | } |
698 | } | |
699 | ||
ce7b0e42 AS |
700 | static int record__auxtrace_snapshot_exit(struct record *rec) |
701 | { | |
702 | if (trigger_is_error(&auxtrace_snapshot_trigger)) | |
703 | return 0; | |
704 | ||
705 | if (!auxtrace_record__snapshot_started && | |
706 | auxtrace_record__snapshot_start(rec->itr)) | |
707 | return -1; | |
708 | ||
709 | record__read_auxtrace_snapshot(rec, true); | |
710 | if (trigger_is_error(&auxtrace_snapshot_trigger)) | |
711 | return -1; | |
712 | ||
713 | return 0; | |
714 | } | |
715 | ||
4b5ea3bd AH |
716 | static int record__auxtrace_init(struct record *rec) |
717 | { | |
718 | int err; | |
719 | ||
720 | if (!rec->itr) { | |
721 | rec->itr = auxtrace_record__init(rec->evlist, &err); | |
722 | if (err) | |
723 | return err; | |
724 | } | |
725 | ||
726 | err = auxtrace_parse_snapshot_options(rec->itr, &rec->opts, | |
727 | rec->opts.auxtrace_snapshot_opts); | |
728 | if (err) | |
729 | return err; | |
730 | ||
c0a6de06 AH |
731 | err = auxtrace_parse_sample_options(rec->itr, rec->evlist, &rec->opts, |
732 | rec->opts.auxtrace_sample_opts); | |
733 | if (err) | |
734 | return err; | |
735 | ||
d58b3f7e AH |
736 | auxtrace_regroup_aux_output(rec->evlist); |
737 | ||
4b5ea3bd AH |
738 | return auxtrace_parse_filters(rec->evlist); |
739 | } | |
740 | ||
e31f0d01 AH |
741 | #else |
742 | ||
743 | static inline | |
744 | int record__auxtrace_mmap_read(struct record *rec __maybe_unused, | |
a5830532 | 745 | struct mmap *map __maybe_unused) |
e31f0d01 AH |
746 | { |
747 | return 0; | |
748 | } | |
749 | ||
2dd6d8a1 | 750 | static inline |
ce7b0e42 AS |
751 | void record__read_auxtrace_snapshot(struct record *rec __maybe_unused, |
752 | bool on_exit __maybe_unused) | |
de9ac07b | 753 | { |
f7b7c26e PZ |
754 | } |
755 | ||
2dd6d8a1 AH |
756 | static inline |
757 | int auxtrace_record__snapshot_start(struct auxtrace_record *itr __maybe_unused) | |
f7b7c26e | 758 | { |
2dd6d8a1 | 759 | return 0; |
de9ac07b PZ |
760 | } |
761 | ||
ce7b0e42 AS |
762 | static inline |
763 | int record__auxtrace_snapshot_exit(struct record *rec __maybe_unused) | |
764 | { | |
765 | return 0; | |
766 | } | |
767 | ||
4b5ea3bd AH |
768 | static int record__auxtrace_init(struct record *rec __maybe_unused) |
769 | { | |
770 | return 0; | |
771 | } | |
772 | ||
2dd6d8a1 AH |
773 | #endif |
774 | ||
246eba8e AH |
775 | static int record__config_text_poke(struct evlist *evlist) |
776 | { | |
777 | struct evsel *evsel; | |
778 | int err; | |
779 | ||
780 | /* Nothing to do if text poke is already configured */ | |
781 | evlist__for_each_entry(evlist, evsel) { | |
782 | if (evsel->core.attr.text_poke) | |
783 | return 0; | |
784 | } | |
785 | ||
786 | err = parse_events(evlist, "dummy:u", NULL); | |
787 | if (err) | |
788 | return err; | |
789 | ||
790 | evsel = evlist__last(evlist); | |
791 | ||
792 | evsel->core.attr.freq = 0; | |
793 | evsel->core.attr.sample_period = 1; | |
794 | evsel->core.attr.text_poke = 1; | |
795 | evsel->core.attr.ksymbol = 1; | |
796 | ||
797 | evsel->core.system_wide = true; | |
798 | evsel->no_aux_samples = true; | |
799 | evsel->immediate = true; | |
800 | ||
801 | /* Text poke must be collected on all CPUs */ | |
802 | perf_cpu_map__put(evsel->core.own_cpus); | |
803 | evsel->core.own_cpus = perf_cpu_map__new(NULL); | |
804 | perf_cpu_map__put(evsel->core.cpus); | |
805 | evsel->core.cpus = perf_cpu_map__get(evsel->core.own_cpus); | |
806 | ||
807 | evsel__set_sample_bit(evsel, TIME); | |
808 | ||
809 | return 0; | |
810 | } | |
811 | ||
eeb399b5 AH |
812 | static bool record__kcore_readable(struct machine *machine) |
813 | { | |
814 | char kcore[PATH_MAX]; | |
815 | int fd; | |
816 | ||
817 | scnprintf(kcore, sizeof(kcore), "%s/proc/kcore", machine->root_dir); | |
818 | ||
819 | fd = open(kcore, O_RDONLY); | |
820 | if (fd < 0) | |
821 | return false; | |
822 | ||
823 | close(fd); | |
824 | ||
825 | return true; | |
826 | } | |
827 | ||
828 | static int record__kcore_copy(struct machine *machine, struct perf_data *data) | |
829 | { | |
830 | char from_dir[PATH_MAX]; | |
831 | char kcore_dir[PATH_MAX]; | |
832 | int ret; | |
833 | ||
834 | snprintf(from_dir, sizeof(from_dir), "%s/proc", machine->root_dir); | |
835 | ||
836 | ret = perf_data__make_kcore_dir(data, kcore_dir, sizeof(kcore_dir)); | |
837 | if (ret) | |
838 | return ret; | |
839 | ||
840 | return kcore_copy(from_dir, kcore_dir); | |
841 | } | |
842 | ||
cda57a8c | 843 | static int record__mmap_evlist(struct record *rec, |
63503dba | 844 | struct evlist *evlist) |
cda57a8c WN |
845 | { |
846 | struct record_opts *opts = &rec->opts; | |
c0a6de06 AH |
847 | bool auxtrace_overwrite = opts->auxtrace_snapshot_mode || |
848 | opts->auxtrace_sample_mode; | |
cda57a8c WN |
849 | char msg[512]; |
850 | ||
f13de660 AB |
851 | if (opts->affinity != PERF_AFFINITY_SYS) |
852 | cpu__setup_cpunode_map(); | |
853 | ||
9521b5f2 | 854 | if (evlist__mmap_ex(evlist, opts->mmap_pages, |
cda57a8c | 855 | opts->auxtrace_mmap_pages, |
c0a6de06 | 856 | auxtrace_overwrite, |
470530bb | 857 | opts->nr_cblocks, opts->affinity, |
51255a8a | 858 | opts->mmap_flush, opts->comp_level) < 0) { |
cda57a8c WN |
859 | if (errno == EPERM) { |
860 | pr_err("Permission error mapping pages.\n" | |
861 | "Consider increasing " | |
862 | "/proc/sys/kernel/perf_event_mlock_kb,\n" | |
863 | "or try again with a smaller value of -m/--mmap_pages.\n" | |
864 | "(current value: %u,%u)\n", | |
865 | opts->mmap_pages, opts->auxtrace_mmap_pages); | |
866 | return -errno; | |
867 | } else { | |
868 | pr_err("failed to mmap with %d (%s)\n", errno, | |
c8b5f2c9 | 869 | str_error_r(errno, msg, sizeof(msg))); |
cda57a8c WN |
870 | if (errno) |
871 | return -errno; | |
872 | else | |
873 | return -EINVAL; | |
874 | } | |
875 | } | |
876 | return 0; | |
877 | } | |
878 | ||
879 | static int record__mmap(struct record *rec) | |
880 | { | |
881 | return record__mmap_evlist(rec, rec->evlist); | |
882 | } | |
883 | ||
8c6f45a7 | 884 | static int record__open(struct record *rec) |
dd7927f4 | 885 | { |
d6195a6a | 886 | char msg[BUFSIZ]; |
32dcd021 | 887 | struct evsel *pos; |
63503dba | 888 | struct evlist *evlist = rec->evlist; |
d20deb64 | 889 | struct perf_session *session = rec->session; |
b4006796 | 890 | struct record_opts *opts = &rec->opts; |
8d3eca20 | 891 | int rc = 0; |
dd7927f4 | 892 | |
d3dbf43c | 893 | /* |
b91e5492 KL |
894 | * For initial_delay, system wide or a hybrid system, we need to add a |
895 | * dummy event so that we can track PERF_RECORD_MMAP to cover the delay | |
896 | * of waiting or event synthesis. | |
d3dbf43c | 897 | */ |
b91e5492 KL |
898 | if (opts->initial_delay || target__has_cpu(&opts->target) || |
899 | perf_pmu__has_hybrid()) { | |
e80db255 | 900 | pos = evlist__get_tracking_event(evlist); |
442ad225 AH |
901 | if (!evsel__is_dummy_event(pos)) { |
902 | /* Set up dummy event. */ | |
facbf0b9 | 903 | if (evlist__add_dummy(evlist)) |
442ad225 AH |
904 | return -ENOMEM; |
905 | pos = evlist__last(evlist); | |
e80db255 | 906 | evlist__set_tracking_event(evlist, pos); |
442ad225 AH |
907 | } |
908 | ||
0a892c1c IR |
909 | /* |
910 | * Enable the dummy event when the process is forked for | |
911 | * initial_delay, immediately for system wide. | |
912 | */ | |
bb07d62e NK |
913 | if (opts->initial_delay && !pos->immediate && |
914 | !target__has_cpu(&opts->target)) | |
0a892c1c IR |
915 | pos->core.attr.enable_on_exec = 1; |
916 | else | |
917 | pos->immediate = 1; | |
d3dbf43c ACM |
918 | } |
919 | ||
78e1bc25 | 920 | evlist__config(evlist, opts, &callchain_param); |
cac21425 | 921 | |
e5cadb93 | 922 | evlist__for_each_entry(evlist, pos) { |
dd7927f4 | 923 | try_again: |
af663bd0 | 924 | if (evsel__open(pos, pos->core.cpus, pos->core.threads) < 0) { |
ae430892 | 925 | if (evsel__fallback(pos, errno, msg, sizeof(msg))) { |
bb963e16 | 926 | if (verbose > 0) |
c0a54341 | 927 | ui__warning("%s\n", msg); |
d6d901c2 ZY |
928 | goto try_again; |
929 | } | |
cf99ad14 | 930 | if ((errno == EINVAL || errno == EBADF) && |
fba7c866 | 931 | pos->core.leader != &pos->core && |
cf99ad14 | 932 | pos->weak_group) { |
64b4778b | 933 | pos = evlist__reset_weak_group(evlist, pos, true); |
cf99ad14 AK |
934 | goto try_again; |
935 | } | |
56e52e85 | 936 | rc = -errno; |
2bb72dbb | 937 | evsel__open_strerror(pos, &opts->target, errno, msg, sizeof(msg)); |
56e52e85 | 938 | ui__error("%s\n", msg); |
8d3eca20 | 939 | goto out; |
c171b552 | 940 | } |
bfd8f72c AK |
941 | |
942 | pos->supported = true; | |
c171b552 | 943 | } |
a43d3f08 | 944 | |
78e1bc25 | 945 | if (symbol_conf.kptr_restrict && !evlist__exclude_kernel(evlist)) { |
c8b567c8 ACM |
946 | pr_warning( |
947 | "WARNING: Kernel address maps (/proc/{kallsyms,modules}) are restricted,\n" | |
948 | "check /proc/sys/kernel/kptr_restrict and /proc/sys/kernel/perf_event_paranoid.\n\n" | |
949 | "Samples in kernel functions may not be resolved if a suitable vmlinux\n" | |
950 | "file is not found in the buildid cache or in the vmlinux path.\n\n" | |
951 | "Samples in kernel modules won't be resolved at all.\n\n" | |
952 | "If some relocation was applied (e.g. kexec) symbols may be misresolved\n" | |
953 | "even with a suitable vmlinux or kallsyms file.\n\n"); | |
954 | } | |
955 | ||
24bf91a7 | 956 | if (evlist__apply_filters(evlist, &pos)) { |
62d94b00 | 957 | pr_err("failed to set filter \"%s\" on event %s with %d (%s)\n", |
8ab2e96d | 958 | pos->filter, evsel__name(pos), errno, |
c8b5f2c9 | 959 | str_error_r(errno, msg, sizeof(msg))); |
8d3eca20 | 960 | rc = -1; |
5d8bb1ec MP |
961 | goto out; |
962 | } | |
963 | ||
cda57a8c WN |
964 | rc = record__mmap(rec); |
965 | if (rc) | |
8d3eca20 | 966 | goto out; |
0a27d7f9 | 967 | |
563aecb2 | 968 | session->evlist = evlist; |
7b56cce2 | 969 | perf_session__set_id_hdr_size(session); |
8d3eca20 DA |
970 | out: |
971 | return rc; | |
16c8a109 PZ |
972 | } |
973 | ||
66286ed3 AH |
974 | static void set_timestamp_boundary(struct record *rec, u64 sample_time) |
975 | { | |
976 | if (rec->evlist->first_sample_time == 0) | |
977 | rec->evlist->first_sample_time = sample_time; | |
978 | ||
979 | if (sample_time) | |
980 | rec->evlist->last_sample_time = sample_time; | |
981 | } | |
982 | ||
e3d59112 NK |
983 | static int process_sample_event(struct perf_tool *tool, |
984 | union perf_event *event, | |
985 | struct perf_sample *sample, | |
32dcd021 | 986 | struct evsel *evsel, |
e3d59112 NK |
987 | struct machine *machine) |
988 | { | |
989 | struct record *rec = container_of(tool, struct record, tool); | |
990 | ||
66286ed3 | 991 | set_timestamp_boundary(rec, sample->time); |
e3d59112 | 992 | |
68588baf JY |
993 | if (rec->buildid_all) |
994 | return 0; | |
995 | ||
996 | rec->samples++; | |
e3d59112 NK |
997 | return build_id__mark_dso_hit(tool, event, sample, evsel, machine); |
998 | } | |
999 | ||
8c6f45a7 | 1000 | static int process_buildids(struct record *rec) |
6122e4e4 | 1001 | { |
f5fc1412 | 1002 | struct perf_session *session = rec->session; |
6122e4e4 | 1003 | |
45112e89 | 1004 | if (perf_data__size(&rec->data) == 0) |
9f591fd7 ACM |
1005 | return 0; |
1006 | ||
00dc8657 NK |
1007 | /* |
1008 | * During this process, it'll load kernel map and replace the | |
1009 | * dso->long_name to a real pathname it found. In this case | |
1010 | * we prefer the vmlinux path like | |
1011 | * /lib/modules/3.16.4/build/vmlinux | |
1012 | * | |
1013 | * rather than build-id path (in debug directory). | |
1014 | * $HOME/.debug/.build-id/f0/6e17aa50adf4d00b88925e03775de107611551 | |
1015 | */ | |
1016 | symbol_conf.ignore_vmlinux_buildid = true; | |
1017 | ||
6156681b NK |
1018 | /* |
1019 | * If --buildid-all is given, it marks all DSO regardless of hits, | |
68588baf JY |
1020 | * so no need to process samples. But if timestamp_boundary is enabled, |
1021 | * it still needs to walk on all samples to get the timestamps of | |
1022 | * first/last samples. | |
6156681b | 1023 | */ |
68588baf | 1024 | if (rec->buildid_all && !rec->timestamp_boundary) |
6156681b NK |
1025 | rec->tool.sample = NULL; |
1026 | ||
b7b61cbe | 1027 | return perf_session__process_events(session); |
6122e4e4 ACM |
1028 | } |
1029 | ||
8115d60c | 1030 | static void perf_event__synthesize_guest_os(struct machine *machine, void *data) |
a1645ce1 ZY |
1031 | { |
1032 | int err; | |
45694aa7 | 1033 | struct perf_tool *tool = data; |
a1645ce1 ZY |
1034 | /* |
1035 | *As for guest kernel when processing subcommand record&report, | |
1036 | *we arrange module mmap prior to guest kernel mmap and trigger | |
1037 | *a preload dso because default guest module symbols are loaded | |
1038 | *from guest kallsyms instead of /lib/modules/XXX/XXX. This | |
1039 | *method is used to avoid symbol missing when the first addr is | |
1040 | *in module instead of in guest kernel. | |
1041 | */ | |
45694aa7 | 1042 | err = perf_event__synthesize_modules(tool, process_synthesized_event, |
743eb868 | 1043 | machine); |
a1645ce1 ZY |
1044 | if (err < 0) |
1045 | pr_err("Couldn't record guest kernel [%d]'s reference" | |
23346f21 | 1046 | " relocation symbol.\n", machine->pid); |
a1645ce1 | 1047 | |
a1645ce1 ZY |
1048 | /* |
1049 | * We use _stext for guest kernel because guest kernel's /proc/kallsyms | |
1050 | * have no _text sometimes. | |
1051 | */ | |
45694aa7 | 1052 | err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event, |
0ae617be | 1053 | machine); |
a1645ce1 ZY |
1054 | if (err < 0) |
1055 | pr_err("Couldn't record guest kernel [%d]'s reference" | |
23346f21 | 1056 | " relocation symbol.\n", machine->pid); |
a1645ce1 ZY |
1057 | } |
1058 | ||
98402807 FW |
1059 | static struct perf_event_header finished_round_event = { |
1060 | .size = sizeof(struct perf_event_header), | |
1061 | .type = PERF_RECORD_FINISHED_ROUND, | |
1062 | }; | |
1063 | ||
a5830532 | 1064 | static void record__adjust_affinity(struct record *rec, struct mmap *map) |
f13de660 AB |
1065 | { |
1066 | if (rec->opts.affinity != PERF_AFFINITY_SYS && | |
8384a260 AB |
1067 | !bitmap_equal(rec->affinity_mask.bits, map->affinity_mask.bits, |
1068 | rec->affinity_mask.nbits)) { | |
1069 | bitmap_zero(rec->affinity_mask.bits, rec->affinity_mask.nbits); | |
1070 | bitmap_or(rec->affinity_mask.bits, rec->affinity_mask.bits, | |
1071 | map->affinity_mask.bits, rec->affinity_mask.nbits); | |
1072 | sched_setaffinity(0, MMAP_CPU_MASK_BYTES(&rec->affinity_mask), | |
1073 | (cpu_set_t *)rec->affinity_mask.bits); | |
1074 | if (verbose == 2) | |
1075 | mmap_cpu_mask__scnprintf(&rec->affinity_mask, "thread"); | |
f13de660 AB |
1076 | } |
1077 | } | |
1078 | ||
5d7f4116 AB |
1079 | static size_t process_comp_header(void *record, size_t increment) |
1080 | { | |
72932371 | 1081 | struct perf_record_compressed *event = record; |
5d7f4116 AB |
1082 | size_t size = sizeof(*event); |
1083 | ||
1084 | if (increment) { | |
1085 | event->header.size += increment; | |
1086 | return increment; | |
1087 | } | |
1088 | ||
1089 | event->header.type = PERF_RECORD_COMPRESSED; | |
1090 | event->header.size = size; | |
1091 | ||
1092 | return size; | |
1093 | } | |
1094 | ||
1095 | static size_t zstd_compress(struct perf_session *session, void *dst, size_t dst_size, | |
1096 | void *src, size_t src_size) | |
1097 | { | |
1098 | size_t compressed; | |
72932371 | 1099 | size_t max_record_size = PERF_SAMPLE_MAX_SIZE - sizeof(struct perf_record_compressed) - 1; |
5d7f4116 AB |
1100 | |
1101 | compressed = zstd_compress_stream_to_records(&session->zstd_data, dst, dst_size, src, src_size, | |
1102 | max_record_size, process_comp_header); | |
1103 | ||
1104 | session->bytes_transferred += src_size; | |
1105 | session->bytes_compressed += compressed; | |
1106 | ||
1107 | return compressed; | |
1108 | } | |
1109 | ||
63503dba | 1110 | static int record__mmap_read_evlist(struct record *rec, struct evlist *evlist, |
470530bb | 1111 | bool overwrite, bool synch) |
98402807 | 1112 | { |
dcabb507 | 1113 | u64 bytes_written = rec->bytes_written; |
0e2e63dd | 1114 | int i; |
8d3eca20 | 1115 | int rc = 0; |
a5830532 | 1116 | struct mmap *maps; |
d3d1af6f | 1117 | int trace_fd = rec->data.file.fd; |
ef781128 | 1118 | off_t off = 0; |
98402807 | 1119 | |
cb21686b WN |
1120 | if (!evlist) |
1121 | return 0; | |
ef149c25 | 1122 | |
0b72d69a | 1123 | maps = overwrite ? evlist->overwrite_mmap : evlist->mmap; |
a4ea0ec4 WN |
1124 | if (!maps) |
1125 | return 0; | |
1126 | ||
0b72d69a | 1127 | if (overwrite && evlist->bkw_mmap_state != BKW_MMAP_DATA_PENDING) |
54cc54de WN |
1128 | return 0; |
1129 | ||
d3d1af6f AB |
1130 | if (record__aio_enabled(rec)) |
1131 | off = record__aio_get_pos(trace_fd); | |
1132 | ||
c976ee11 | 1133 | for (i = 0; i < evlist->core.nr_mmaps; i++) { |
470530bb | 1134 | u64 flush = 0; |
a5830532 | 1135 | struct mmap *map = &maps[i]; |
cb21686b | 1136 | |
547740f7 | 1137 | if (map->core.base) { |
f13de660 | 1138 | record__adjust_affinity(rec, map); |
470530bb | 1139 | if (synch) { |
65aa2e6b JO |
1140 | flush = map->core.flush; |
1141 | map->core.flush = 1; | |
470530bb | 1142 | } |
d3d1af6f | 1143 | if (!record__aio_enabled(rec)) { |
ef781128 | 1144 | if (perf_mmap__push(map, rec, record__pushfn) < 0) { |
470530bb | 1145 | if (synch) |
65aa2e6b | 1146 | map->core.flush = flush; |
d3d1af6f AB |
1147 | rc = -1; |
1148 | goto out; | |
1149 | } | |
1150 | } else { | |
ef781128 | 1151 | if (record__aio_push(rec, map, &off) < 0) { |
d3d1af6f | 1152 | record__aio_set_pos(trace_fd, off); |
470530bb | 1153 | if (synch) |
65aa2e6b | 1154 | map->core.flush = flush; |
d3d1af6f AB |
1155 | rc = -1; |
1156 | goto out; | |
1157 | } | |
8d3eca20 | 1158 | } |
470530bb | 1159 | if (synch) |
65aa2e6b | 1160 | map->core.flush = flush; |
8d3eca20 | 1161 | } |
ef149c25 | 1162 | |
e035f4ca | 1163 | if (map->auxtrace_mmap.base && !rec->opts.auxtrace_snapshot_mode && |
c0a6de06 | 1164 | !rec->opts.auxtrace_sample_mode && |
e035f4ca | 1165 | record__auxtrace_mmap_read(rec, map) != 0) { |
ef149c25 AH |
1166 | rc = -1; |
1167 | goto out; | |
1168 | } | |
98402807 FW |
1169 | } |
1170 | ||
d3d1af6f AB |
1171 | if (record__aio_enabled(rec)) |
1172 | record__aio_set_pos(trace_fd, off); | |
1173 | ||
dcabb507 JO |
1174 | /* |
1175 | * Mark the round finished in case we wrote | |
1176 | * at least one event. | |
1177 | */ | |
1178 | if (bytes_written != rec->bytes_written) | |
ded2b8fe | 1179 | rc = record__write(rec, NULL, &finished_round_event, sizeof(finished_round_event)); |
8d3eca20 | 1180 | |
0b72d69a | 1181 | if (overwrite) |
ade9d208 | 1182 | evlist__toggle_bkw_mmap(evlist, BKW_MMAP_EMPTY); |
8d3eca20 DA |
1183 | out: |
1184 | return rc; | |
98402807 FW |
1185 | } |
1186 | ||
470530bb | 1187 | static int record__mmap_read_all(struct record *rec, bool synch) |
cb21686b WN |
1188 | { |
1189 | int err; | |
1190 | ||
470530bb | 1191 | err = record__mmap_read_evlist(rec, rec->evlist, false, synch); |
cb21686b WN |
1192 | if (err) |
1193 | return err; | |
1194 | ||
470530bb | 1195 | return record__mmap_read_evlist(rec, rec->evlist, true, synch); |
cb21686b WN |
1196 | } |
1197 | ||
8c6f45a7 | 1198 | static void record__init_features(struct record *rec) |
57706abc | 1199 | { |
57706abc DA |
1200 | struct perf_session *session = rec->session; |
1201 | int feat; | |
1202 | ||
1203 | for (feat = HEADER_FIRST_FEATURE; feat < HEADER_LAST_FEATURE; feat++) | |
1204 | perf_header__set_feat(&session->header, feat); | |
1205 | ||
1206 | if (rec->no_buildid) | |
1207 | perf_header__clear_feat(&session->header, HEADER_BUILD_ID); | |
1208 | ||
ce9036a6 | 1209 | if (!have_tracepoints(&rec->evlist->core.entries)) |
57706abc DA |
1210 | perf_header__clear_feat(&session->header, HEADER_TRACING_DATA); |
1211 | ||
1212 | if (!rec->opts.branch_stack) | |
1213 | perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK); | |
ef149c25 AH |
1214 | |
1215 | if (!rec->opts.full_auxtrace) | |
1216 | perf_header__clear_feat(&session->header, HEADER_AUXTRACE); | |
ffa517ad | 1217 | |
cf790516 AB |
1218 | if (!(rec->opts.use_clockid && rec->opts.clockid_res_ns)) |
1219 | perf_header__clear_feat(&session->header, HEADER_CLOCKID); | |
1220 | ||
d1e325cf JO |
1221 | if (!rec->opts.use_clockid) |
1222 | perf_header__clear_feat(&session->header, HEADER_CLOCK_DATA); | |
1223 | ||
258031c0 | 1224 | perf_header__clear_feat(&session->header, HEADER_DIR_FORMAT); |
42e1fd80 AB |
1225 | if (!record__comp_enabled(rec)) |
1226 | perf_header__clear_feat(&session->header, HEADER_COMPRESSED); | |
258031c0 | 1227 | |
ffa517ad | 1228 | perf_header__clear_feat(&session->header, HEADER_STAT); |
57706abc DA |
1229 | } |
1230 | ||
e1ab48ba WN |
1231 | static void |
1232 | record__finish_output(struct record *rec) | |
1233 | { | |
8ceb41d7 JO |
1234 | struct perf_data *data = &rec->data; |
1235 | int fd = perf_data__fd(data); | |
e1ab48ba | 1236 | |
8ceb41d7 | 1237 | if (data->is_pipe) |
e1ab48ba WN |
1238 | return; |
1239 | ||
1240 | rec->session->header.data_size += rec->bytes_written; | |
45112e89 | 1241 | data->file.size = lseek(perf_data__fd(data), 0, SEEK_CUR); |
e1ab48ba WN |
1242 | |
1243 | if (!rec->no_buildid) { | |
1244 | process_buildids(rec); | |
1245 | ||
1246 | if (rec->buildid_all) | |
1247 | dsos__hit_all(rec->session); | |
1248 | } | |
1249 | perf_session__write_header(rec->session, rec->evlist, fd, true); | |
1250 | ||
1251 | return; | |
1252 | } | |
1253 | ||
4ea648ae | 1254 | static int record__synthesize_workload(struct record *rec, bool tail) |
be7b0c9e | 1255 | { |
9d6aae72 | 1256 | int err; |
9749b90e | 1257 | struct perf_thread_map *thread_map; |
41b740b6 | 1258 | bool needs_mmap = rec->opts.synth & PERF_SYNTH_MMAP; |
be7b0c9e | 1259 | |
4ea648ae WN |
1260 | if (rec->opts.tail_synthesize != tail) |
1261 | return 0; | |
1262 | ||
9d6aae72 ACM |
1263 | thread_map = thread_map__new_by_tid(rec->evlist->workload.pid); |
1264 | if (thread_map == NULL) | |
1265 | return -1; | |
1266 | ||
1267 | err = perf_event__synthesize_thread_map(&rec->tool, thread_map, | |
be7b0c9e WN |
1268 | process_synthesized_event, |
1269 | &rec->session->machines.host, | |
41b740b6 | 1270 | needs_mmap, |
3fcb10e4 | 1271 | rec->opts.sample_address); |
7836e52e | 1272 | perf_thread_map__put(thread_map); |
9d6aae72 | 1273 | return err; |
be7b0c9e WN |
1274 | } |
1275 | ||
4ea648ae | 1276 | static int record__synthesize(struct record *rec, bool tail); |
3c1cb7e3 | 1277 | |
ecfd7a9c WN |
1278 | static int |
1279 | record__switch_output(struct record *rec, bool at_exit) | |
1280 | { | |
8ceb41d7 | 1281 | struct perf_data *data = &rec->data; |
ecfd7a9c | 1282 | int fd, err; |
03724b2e | 1283 | char *new_filename; |
ecfd7a9c WN |
1284 | |
1285 | /* Same Size: "2015122520103046"*/ | |
1286 | char timestamp[] = "InvalidTimestamp"; | |
1287 | ||
d3d1af6f AB |
1288 | record__aio_mmap_read_sync(rec); |
1289 | ||
4ea648ae WN |
1290 | record__synthesize(rec, true); |
1291 | if (target__none(&rec->opts.target)) | |
1292 | record__synthesize_workload(rec, true); | |
1293 | ||
ecfd7a9c WN |
1294 | rec->samples = 0; |
1295 | record__finish_output(rec); | |
1296 | err = fetch_current_timestamp(timestamp, sizeof(timestamp)); | |
1297 | if (err) { | |
1298 | pr_err("Failed to get current timestamp\n"); | |
1299 | return -EINVAL; | |
1300 | } | |
1301 | ||
8ceb41d7 | 1302 | fd = perf_data__switch(data, timestamp, |
ecfd7a9c | 1303 | rec->session->header.data_offset, |
03724b2e | 1304 | at_exit, &new_filename); |
ecfd7a9c WN |
1305 | if (fd >= 0 && !at_exit) { |
1306 | rec->bytes_written = 0; | |
1307 | rec->session->header.data_size = 0; | |
1308 | } | |
1309 | ||
1310 | if (!quiet) | |
1311 | fprintf(stderr, "[ perf record: Dump %s.%s ]\n", | |
2d4f2799 | 1312 | data->path, timestamp); |
3c1cb7e3 | 1313 | |
03724b2e AK |
1314 | if (rec->switch_output.num_files) { |
1315 | int n = rec->switch_output.cur_file + 1; | |
1316 | ||
1317 | if (n >= rec->switch_output.num_files) | |
1318 | n = 0; | |
1319 | rec->switch_output.cur_file = n; | |
1320 | if (rec->switch_output.filenames[n]) { | |
1321 | remove(rec->switch_output.filenames[n]); | |
d8f9da24 | 1322 | zfree(&rec->switch_output.filenames[n]); |
03724b2e AK |
1323 | } |
1324 | rec->switch_output.filenames[n] = new_filename; | |
1325 | } else { | |
1326 | free(new_filename); | |
1327 | } | |
1328 | ||
3c1cb7e3 | 1329 | /* Output tracking events */ |
be7b0c9e | 1330 | if (!at_exit) { |
4ea648ae | 1331 | record__synthesize(rec, false); |
3c1cb7e3 | 1332 | |
be7b0c9e WN |
1333 | /* |
1334 | * In 'perf record --switch-output' without -a, | |
1335 | * record__synthesize() in record__switch_output() won't | |
1336 | * generate tracking events because there's no thread_map | |
1337 | * in evlist. Which causes newly created perf.data doesn't | |
1338 | * contain map and comm information. | |
1339 | * Create a fake thread_map and directly call | |
1340 | * perf_event__synthesize_thread_map() for those events. | |
1341 | */ | |
1342 | if (target__none(&rec->opts.target)) | |
4ea648ae | 1343 | record__synthesize_workload(rec, false); |
be7b0c9e | 1344 | } |
ecfd7a9c WN |
1345 | return fd; |
1346 | } | |
1347 | ||
f33cbe72 ACM |
1348 | static volatile int workload_exec_errno; |
1349 | ||
1350 | /* | |
7b392ef0 | 1351 | * evlist__prepare_workload will send a SIGUSR1 |
f33cbe72 ACM |
1352 | * if the fork fails, since we asked by setting its |
1353 | * want_signal to true. | |
1354 | */ | |
45604710 NK |
1355 | static void workload_exec_failed_signal(int signo __maybe_unused, |
1356 | siginfo_t *info, | |
f33cbe72 ACM |
1357 | void *ucontext __maybe_unused) |
1358 | { | |
1359 | workload_exec_errno = info->si_value.sival_int; | |
1360 | done = 1; | |
f33cbe72 ACM |
1361 | child_finished = 1; |
1362 | } | |
1363 | ||
2dd6d8a1 | 1364 | static void snapshot_sig_handler(int sig); |
bfacbe3b | 1365 | static void alarm_sig_handler(int sig); |
2dd6d8a1 | 1366 | |
db0ea13c | 1367 | static const struct perf_event_mmap_page *evlist__pick_pc(struct evlist *evlist) |
ee667f94 | 1368 | { |
b2cb615d | 1369 | if (evlist) { |
547740f7 JO |
1370 | if (evlist->mmap && evlist->mmap[0].core.base) |
1371 | return evlist->mmap[0].core.base; | |
1372 | if (evlist->overwrite_mmap && evlist->overwrite_mmap[0].core.base) | |
1373 | return evlist->overwrite_mmap[0].core.base; | |
b2cb615d | 1374 | } |
ee667f94 WN |
1375 | return NULL; |
1376 | } | |
1377 | ||
c45628b0 WN |
1378 | static const struct perf_event_mmap_page *record__pick_pc(struct record *rec) |
1379 | { | |
db0ea13c | 1380 | const struct perf_event_mmap_page *pc = evlist__pick_pc(rec->evlist); |
ee667f94 WN |
1381 | if (pc) |
1382 | return pc; | |
c45628b0 WN |
1383 | return NULL; |
1384 | } | |
1385 | ||
4ea648ae | 1386 | static int record__synthesize(struct record *rec, bool tail) |
c45c86eb WN |
1387 | { |
1388 | struct perf_session *session = rec->session; | |
1389 | struct machine *machine = &session->machines.host; | |
8ceb41d7 | 1390 | struct perf_data *data = &rec->data; |
c45c86eb WN |
1391 | struct record_opts *opts = &rec->opts; |
1392 | struct perf_tool *tool = &rec->tool; | |
c45c86eb | 1393 | int err = 0; |
d99c22ea | 1394 | event_op f = process_synthesized_event; |
c45c86eb | 1395 | |
4ea648ae WN |
1396 | if (rec->opts.tail_synthesize != tail) |
1397 | return 0; | |
1398 | ||
8ceb41d7 | 1399 | if (data->is_pipe) { |
c3a057dc | 1400 | err = perf_event__synthesize_for_pipe(tool, session, data, |
a2015516 | 1401 | process_synthesized_event); |
c3a057dc NK |
1402 | if (err < 0) |
1403 | goto out; | |
a2015516 | 1404 | |
c3a057dc | 1405 | rec->bytes_written += err; |
c45c86eb WN |
1406 | } |
1407 | ||
c45628b0 | 1408 | err = perf_event__synth_time_conv(record__pick_pc(rec), tool, |
46bc29b9 AH |
1409 | process_synthesized_event, machine); |
1410 | if (err) | |
1411 | goto out; | |
1412 | ||
c0a6de06 AH |
1413 | /* Synthesize id_index before auxtrace_info */ |
1414 | if (rec->opts.auxtrace_sample_mode) { | |
1415 | err = perf_event__synthesize_id_index(tool, | |
1416 | process_synthesized_event, | |
1417 | session->evlist, machine); | |
1418 | if (err) | |
1419 | goto out; | |
1420 | } | |
1421 | ||
c45c86eb WN |
1422 | if (rec->opts.full_auxtrace) { |
1423 | err = perf_event__synthesize_auxtrace_info(rec->itr, tool, | |
1424 | session, process_synthesized_event); | |
1425 | if (err) | |
1426 | goto out; | |
1427 | } | |
1428 | ||
78e1bc25 | 1429 | if (!evlist__exclude_kernel(rec->evlist)) { |
6c443954 ACM |
1430 | err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event, |
1431 | machine); | |
1432 | WARN_ONCE(err < 0, "Couldn't record kernel reference relocation symbol\n" | |
1433 | "Symbol resolution may be skewed if relocation was used (e.g. kexec).\n" | |
1434 | "Check /proc/kallsyms permission or run as root.\n"); | |
1435 | ||
1436 | err = perf_event__synthesize_modules(tool, process_synthesized_event, | |
1437 | machine); | |
1438 | WARN_ONCE(err < 0, "Couldn't record kernel module information.\n" | |
1439 | "Symbol resolution may be skewed if relocation was used (e.g. kexec).\n" | |
1440 | "Check /proc/modules permission or run as root.\n"); | |
1441 | } | |
c45c86eb WN |
1442 | |
1443 | if (perf_guest) { | |
1444 | machines__process_guests(&session->machines, | |
1445 | perf_event__synthesize_guest_os, tool); | |
1446 | } | |
1447 | ||
bfd8f72c AK |
1448 | err = perf_event__synthesize_extra_attr(&rec->tool, |
1449 | rec->evlist, | |
1450 | process_synthesized_event, | |
1451 | data->is_pipe); | |
1452 | if (err) | |
1453 | goto out; | |
1454 | ||
03617c22 | 1455 | err = perf_event__synthesize_thread_map2(&rec->tool, rec->evlist->core.threads, |
373565d2 AK |
1456 | process_synthesized_event, |
1457 | NULL); | |
1458 | if (err < 0) { | |
1459 | pr_err("Couldn't synthesize thread map.\n"); | |
1460 | return err; | |
1461 | } | |
1462 | ||
f72f901d | 1463 | err = perf_event__synthesize_cpu_map(&rec->tool, rec->evlist->core.cpus, |
373565d2 AK |
1464 | process_synthesized_event, NULL); |
1465 | if (err < 0) { | |
1466 | pr_err("Couldn't synthesize cpu map.\n"); | |
1467 | return err; | |
1468 | } | |
1469 | ||
e5416950 | 1470 | err = perf_event__synthesize_bpf_events(session, process_synthesized_event, |
7b612e29 SL |
1471 | machine, opts); |
1472 | if (err < 0) | |
1473 | pr_warning("Couldn't synthesize bpf events.\n"); | |
1474 | ||
41b740b6 NK |
1475 | if (rec->opts.synth & PERF_SYNTH_CGROUP) { |
1476 | err = perf_event__synthesize_cgroups(tool, process_synthesized_event, | |
1477 | machine); | |
1478 | if (err < 0) | |
1479 | pr_warning("Couldn't synthesize cgroup events.\n"); | |
1480 | } | |
ab64069f | 1481 | |
d99c22ea SE |
1482 | if (rec->opts.nr_threads_synthesize > 1) { |
1483 | perf_set_multithreaded(); | |
1484 | f = process_locked_synthesized_event; | |
1485 | } | |
1486 | ||
41b740b6 NK |
1487 | if (rec->opts.synth & PERF_SYNTH_TASK) { |
1488 | bool needs_mmap = rec->opts.synth & PERF_SYNTH_MMAP; | |
1489 | ||
1490 | err = __machine__synthesize_threads(machine, tool, &opts->target, | |
1491 | rec->evlist->core.threads, | |
1492 | f, needs_mmap, opts->sample_address, | |
1493 | rec->opts.nr_threads_synthesize); | |
1494 | } | |
d99c22ea SE |
1495 | |
1496 | if (rec->opts.nr_threads_synthesize > 1) | |
1497 | perf_set_singlethreaded(); | |
1498 | ||
c45c86eb WN |
1499 | out: |
1500 | return err; | |
1501 | } | |
1502 | ||
899e5ffb ACM |
1503 | static int record__process_signal_event(union perf_event *event __maybe_unused, void *data) |
1504 | { | |
1505 | struct record *rec = data; | |
1506 | pthread_kill(rec->thread_id, SIGUSR2); | |
1507 | return 0; | |
1508 | } | |
1509 | ||
23cbb41c ACM |
1510 | static int record__setup_sb_evlist(struct record *rec) |
1511 | { | |
1512 | struct record_opts *opts = &rec->opts; | |
1513 | ||
1514 | if (rec->sb_evlist != NULL) { | |
1515 | /* | |
1516 | * We get here if --switch-output-event populated the | |
1517 | * sb_evlist, so associate a callback that will send a SIGUSR2 | |
1518 | * to the main thread. | |
1519 | */ | |
1520 | evlist__set_cb(rec->sb_evlist, record__process_signal_event, rec); | |
1521 | rec->thread_id = pthread_self(); | |
1522 | } | |
1101c872 | 1523 | #ifdef HAVE_LIBBPF_SUPPORT |
23cbb41c ACM |
1524 | if (!opts->no_bpf_event) { |
1525 | if (rec->sb_evlist == NULL) { | |
1526 | rec->sb_evlist = evlist__new(); | |
1527 | ||
1528 | if (rec->sb_evlist == NULL) { | |
1529 | pr_err("Couldn't create side band evlist.\n."); | |
1530 | return -1; | |
1531 | } | |
1532 | } | |
1533 | ||
1534 | if (evlist__add_bpf_sb_event(rec->sb_evlist, &rec->session->header.env)) { | |
1535 | pr_err("Couldn't ask for PERF_RECORD_BPF_EVENT side band events.\n."); | |
1536 | return -1; | |
1537 | } | |
1538 | } | |
1101c872 | 1539 | #endif |
08c83997 | 1540 | if (evlist__start_sb_thread(rec->sb_evlist, &rec->opts.target)) { |
23cbb41c ACM |
1541 | pr_debug("Couldn't start the BPF side band thread:\nBPF programs starting from now on won't be annotatable\n"); |
1542 | opts->no_bpf_event = true; | |
1543 | } | |
1544 | ||
1545 | return 0; | |
1546 | } | |
1547 | ||
d1e325cf JO |
1548 | static int record__init_clock(struct record *rec) |
1549 | { | |
1550 | struct perf_session *session = rec->session; | |
1551 | struct timespec ref_clockid; | |
1552 | struct timeval ref_tod; | |
1553 | u64 ref; | |
1554 | ||
1555 | if (!rec->opts.use_clockid) | |
1556 | return 0; | |
1557 | ||
9d88a1a1 JO |
1558 | if (rec->opts.use_clockid && rec->opts.clockid_res_ns) |
1559 | session->header.env.clock.clockid_res_ns = rec->opts.clockid_res_ns; | |
1560 | ||
d1e325cf JO |
1561 | session->header.env.clock.clockid = rec->opts.clockid; |
1562 | ||
1563 | if (gettimeofday(&ref_tod, NULL) != 0) { | |
1564 | pr_err("gettimeofday failed, cannot set reference time.\n"); | |
1565 | return -1; | |
1566 | } | |
1567 | ||
1568 | if (clock_gettime(rec->opts.clockid, &ref_clockid)) { | |
1569 | pr_err("clock_gettime failed, cannot set reference time.\n"); | |
1570 | return -1; | |
1571 | } | |
1572 | ||
1573 | ref = (u64) ref_tod.tv_sec * NSEC_PER_SEC + | |
1574 | (u64) ref_tod.tv_usec * NSEC_PER_USEC; | |
1575 | ||
1576 | session->header.env.clock.tod_ns = ref; | |
1577 | ||
1578 | ref = (u64) ref_clockid.tv_sec * NSEC_PER_SEC + | |
1579 | (u64) ref_clockid.tv_nsec; | |
1580 | ||
1581 | session->header.env.clock.clockid_ns = ref; | |
1582 | return 0; | |
1583 | } | |
1584 | ||
d20aff15 AH |
1585 | static void hit_auxtrace_snapshot_trigger(struct record *rec) |
1586 | { | |
1587 | if (trigger_is_ready(&auxtrace_snapshot_trigger)) { | |
1588 | trigger_hit(&auxtrace_snapshot_trigger); | |
1589 | auxtrace_record__snapshot_started = 1; | |
1590 | if (auxtrace_record__snapshot_start(rec->itr)) | |
1591 | trigger_error(&auxtrace_snapshot_trigger); | |
1592 | } | |
1593 | } | |
1594 | ||
91c0f5ec JY |
1595 | static void record__uniquify_name(struct record *rec) |
1596 | { | |
1597 | struct evsel *pos; | |
1598 | struct evlist *evlist = rec->evlist; | |
1599 | char *new_name; | |
1600 | int ret; | |
1601 | ||
1602 | if (!perf_pmu__has_hybrid()) | |
1603 | return; | |
1604 | ||
1605 | evlist__for_each_entry(evlist, pos) { | |
1606 | if (!evsel__is_hybrid(pos)) | |
1607 | continue; | |
1608 | ||
1609 | if (strchr(pos->name, '/')) | |
1610 | continue; | |
1611 | ||
1612 | ret = asprintf(&new_name, "%s/%s/", | |
1613 | pos->pmu_name, pos->name); | |
1614 | if (ret) { | |
1615 | free(pos->name); | |
1616 | pos->name = new_name; | |
1617 | } | |
1618 | } | |
1619 | } | |
1620 | ||
8c6f45a7 | 1621 | static int __cmd_record(struct record *rec, int argc, const char **argv) |
16c8a109 | 1622 | { |
57706abc | 1623 | int err; |
45604710 | 1624 | int status = 0; |
8b412664 | 1625 | unsigned long waking = 0; |
46be604b | 1626 | const bool forks = argc > 0; |
45694aa7 | 1627 | struct perf_tool *tool = &rec->tool; |
b4006796 | 1628 | struct record_opts *opts = &rec->opts; |
8ceb41d7 | 1629 | struct perf_data *data = &rec->data; |
d20deb64 | 1630 | struct perf_session *session; |
6dcf45ef | 1631 | bool disabled = false, draining = false; |
42aa276f | 1632 | int fd; |
d3c8c08e | 1633 | float ratio = 0; |
acce0223 | 1634 | enum evlist_ctl_cmd cmd = EVLIST_CTL_CMD_UNSUPPORTED; |
de9ac07b | 1635 | |
45604710 | 1636 | atexit(record__sig_exit); |
f5970550 PZ |
1637 | signal(SIGCHLD, sig_handler); |
1638 | signal(SIGINT, sig_handler); | |
804f7ac7 | 1639 | signal(SIGTERM, sig_handler); |
a074865e | 1640 | signal(SIGSEGV, sigsegv_handler); |
c0bdc1c4 | 1641 | |
f3b3614a HB |
1642 | if (rec->opts.record_namespaces) |
1643 | tool->namespace_events = true; | |
1644 | ||
8fb4b679 NK |
1645 | if (rec->opts.record_cgroup) { |
1646 | #ifdef HAVE_FILE_HANDLE | |
1647 | tool->cgroup_events = true; | |
1648 | #else | |
1649 | pr_err("cgroup tracking is not supported\n"); | |
1650 | return -1; | |
1651 | #endif | |
1652 | } | |
1653 | ||
dc0c6127 | 1654 | if (rec->opts.auxtrace_snapshot_mode || rec->switch_output.enabled) { |
2dd6d8a1 | 1655 | signal(SIGUSR2, snapshot_sig_handler); |
3c1cb7e3 WN |
1656 | if (rec->opts.auxtrace_snapshot_mode) |
1657 | trigger_on(&auxtrace_snapshot_trigger); | |
dc0c6127 | 1658 | if (rec->switch_output.enabled) |
3c1cb7e3 | 1659 | trigger_on(&switch_output_trigger); |
c0bdc1c4 | 1660 | } else { |
2dd6d8a1 | 1661 | signal(SIGUSR2, SIG_IGN); |
c0bdc1c4 | 1662 | } |
f5970550 | 1663 | |
2681bd85 | 1664 | session = perf_session__new(data, tool); |
6ef81c55 | 1665 | if (IS_ERR(session)) { |
ffa91880 | 1666 | pr_err("Perf session creation failed.\n"); |
6ef81c55 | 1667 | return PTR_ERR(session); |
a9a70bbc ACM |
1668 | } |
1669 | ||
8ceb41d7 | 1670 | fd = perf_data__fd(data); |
d20deb64 ACM |
1671 | rec->session = session; |
1672 | ||
5d7f4116 AB |
1673 | if (zstd_init(&session->zstd_data, rec->opts.comp_level) < 0) { |
1674 | pr_err("Compression initialization failed.\n"); | |
1675 | return -1; | |
1676 | } | |
da231338 AM |
1677 | #ifdef HAVE_EVENTFD_SUPPORT |
1678 | done_fd = eventfd(0, EFD_NONBLOCK); | |
1679 | if (done_fd < 0) { | |
1680 | pr_err("Failed to create wakeup eventfd, error: %m\n"); | |
1681 | status = -1; | |
1682 | goto out_delete_session; | |
1683 | } | |
e16c2ce7 | 1684 | err = evlist__add_wakeup_eventfd(rec->evlist, done_fd); |
da231338 AM |
1685 | if (err < 0) { |
1686 | pr_err("Failed to add wakeup eventfd to poll list\n"); | |
1687 | status = err; | |
1688 | goto out_delete_session; | |
1689 | } | |
1690 | #endif // HAVE_EVENTFD_SUPPORT | |
5d7f4116 AB |
1691 | |
1692 | session->header.env.comp_type = PERF_COMP_ZSTD; | |
1693 | session->header.env.comp_level = rec->opts.comp_level; | |
1694 | ||
eeb399b5 AH |
1695 | if (rec->opts.kcore && |
1696 | !record__kcore_readable(&session->machines.host)) { | |
1697 | pr_err("ERROR: kcore is not readable.\n"); | |
1698 | return -1; | |
1699 | } | |
1700 | ||
d1e325cf JO |
1701 | if (record__init_clock(rec)) |
1702 | return -1; | |
1703 | ||
8c6f45a7 | 1704 | record__init_features(rec); |
330aa675 | 1705 | |
d4db3f16 | 1706 | if (forks) { |
7b392ef0 ACM |
1707 | err = evlist__prepare_workload(rec->evlist, &opts->target, argv, data->is_pipe, |
1708 | workload_exec_failed_signal); | |
35b9d88e ACM |
1709 | if (err < 0) { |
1710 | pr_err("Couldn't run the workload!\n"); | |
45604710 | 1711 | status = err; |
35b9d88e | 1712 | goto out_delete_session; |
856e9660 | 1713 | } |
856e9660 PZ |
1714 | } |
1715 | ||
ad46e48c JO |
1716 | /* |
1717 | * If we have just single event and are sending data | |
1718 | * through pipe, we need to force the ids allocation, | |
1719 | * because we synthesize event name through the pipe | |
1720 | * and need the id for that. | |
1721 | */ | |
6484d2f9 | 1722 | if (data->is_pipe && rec->evlist->core.nr_entries == 1) |
ad46e48c JO |
1723 | rec->opts.sample_id = true; |
1724 | ||
91c0f5ec JY |
1725 | record__uniquify_name(rec); |
1726 | ||
8c6f45a7 | 1727 | if (record__open(rec) != 0) { |
8d3eca20 | 1728 | err = -1; |
45604710 | 1729 | goto out_child; |
8d3eca20 | 1730 | } |
f6fa4375 | 1731 | session->header.env.comp_mmap_len = session->evlist->core.mmap_len; |
de9ac07b | 1732 | |
eeb399b5 AH |
1733 | if (rec->opts.kcore) { |
1734 | err = record__kcore_copy(&session->machines.host, data); | |
1735 | if (err) { | |
1736 | pr_err("ERROR: Failed to copy kcore\n"); | |
1737 | goto out_child; | |
1738 | } | |
1739 | } | |
1740 | ||
8690a2a7 WN |
1741 | err = bpf__apply_obj_config(); |
1742 | if (err) { | |
1743 | char errbuf[BUFSIZ]; | |
1744 | ||
1745 | bpf__strerror_apply_obj_config(err, errbuf, sizeof(errbuf)); | |
1746 | pr_err("ERROR: Apply config to BPF failed: %s\n", | |
1747 | errbuf); | |
1748 | goto out_child; | |
1749 | } | |
1750 | ||
cca8482c AH |
1751 | /* |
1752 | * Normally perf_session__new would do this, but it doesn't have the | |
1753 | * evlist. | |
1754 | */ | |
8cedf3a5 | 1755 | if (rec->tool.ordered_events && !evlist__sample_id_all(rec->evlist)) { |
cca8482c AH |
1756 | pr_warning("WARNING: No sample_id_all support, falling back to unordered processing\n"); |
1757 | rec->tool.ordered_events = false; | |
1758 | } | |
1759 | ||
3a683120 | 1760 | if (!rec->evlist->core.nr_groups) |
a8bb559b NK |
1761 | perf_header__clear_feat(&session->header, HEADER_GROUP_DESC); |
1762 | ||
8ceb41d7 | 1763 | if (data->is_pipe) { |
42aa276f | 1764 | err = perf_header__write_pipe(fd); |
529870e3 | 1765 | if (err < 0) |
45604710 | 1766 | goto out_child; |
563aecb2 | 1767 | } else { |
42aa276f | 1768 | err = perf_session__write_header(session, rec->evlist, fd, false); |
d5eed904 | 1769 | if (err < 0) |
45604710 | 1770 | goto out_child; |
56b03f3c ACM |
1771 | } |
1772 | ||
b38d85ef | 1773 | err = -1; |
d3665498 | 1774 | if (!rec->no_buildid |
e20960c0 | 1775 | && !perf_header__has_feat(&session->header, HEADER_BUILD_ID)) { |
d3665498 | 1776 | pr_err("Couldn't generate buildids. " |
e20960c0 | 1777 | "Use --no-buildid to profile anyway.\n"); |
45604710 | 1778 | goto out_child; |
e20960c0 RR |
1779 | } |
1780 | ||
23cbb41c ACM |
1781 | err = record__setup_sb_evlist(rec); |
1782 | if (err) | |
1783 | goto out_child; | |
657ee553 | 1784 | |
4ea648ae | 1785 | err = record__synthesize(rec, false); |
c45c86eb | 1786 | if (err < 0) |
45604710 | 1787 | goto out_child; |
8d3eca20 | 1788 | |
d20deb64 | 1789 | if (rec->realtime_prio) { |
de9ac07b PZ |
1790 | struct sched_param param; |
1791 | ||
d20deb64 | 1792 | param.sched_priority = rec->realtime_prio; |
de9ac07b | 1793 | if (sched_setscheduler(0, SCHED_FIFO, ¶m)) { |
6beba7ad | 1794 | pr_err("Could not set realtime priority.\n"); |
8d3eca20 | 1795 | err = -1; |
45604710 | 1796 | goto out_child; |
de9ac07b PZ |
1797 | } |
1798 | } | |
1799 | ||
774cb499 JO |
1800 | /* |
1801 | * When perf is starting the traced process, all the events | |
1802 | * (apart from group members) have enable_on_exec=1 set, | |
1803 | * so don't spoil it by prematurely enabling them. | |
1804 | */ | |
6619a53e | 1805 | if (!target__none(&opts->target) && !opts->initial_delay) |
1c87f165 | 1806 | evlist__enable(rec->evlist); |
764e16a3 | 1807 | |
856e9660 PZ |
1808 | /* |
1809 | * Let the child rip | |
1810 | */ | |
e803cf97 | 1811 | if (forks) { |
20a8a3cf | 1812 | struct machine *machine = &session->machines.host; |
e5bed564 | 1813 | union perf_event *event; |
e907caf3 | 1814 | pid_t tgid; |
e5bed564 NK |
1815 | |
1816 | event = malloc(sizeof(event->comm) + machine->id_hdr_size); | |
1817 | if (event == NULL) { | |
1818 | err = -ENOMEM; | |
1819 | goto out_child; | |
1820 | } | |
1821 | ||
e803cf97 NK |
1822 | /* |
1823 | * Some H/W events are generated before COMM event | |
1824 | * which is emitted during exec(), so perf script | |
1825 | * cannot see a correct process name for those events. | |
1826 | * Synthesize COMM event to prevent it. | |
1827 | */ | |
e907caf3 HB |
1828 | tgid = perf_event__synthesize_comm(tool, event, |
1829 | rec->evlist->workload.pid, | |
1830 | process_synthesized_event, | |
1831 | machine); | |
1832 | free(event); | |
1833 | ||
1834 | if (tgid == -1) | |
1835 | goto out_child; | |
1836 | ||
1837 | event = malloc(sizeof(event->namespaces) + | |
1838 | (NR_NAMESPACES * sizeof(struct perf_ns_link_info)) + | |
1839 | machine->id_hdr_size); | |
1840 | if (event == NULL) { | |
1841 | err = -ENOMEM; | |
1842 | goto out_child; | |
1843 | } | |
1844 | ||
1845 | /* | |
1846 | * Synthesize NAMESPACES event for the command specified. | |
1847 | */ | |
1848 | perf_event__synthesize_namespaces(tool, event, | |
1849 | rec->evlist->workload.pid, | |
1850 | tgid, process_synthesized_event, | |
1851 | machine); | |
e5bed564 | 1852 | free(event); |
e803cf97 | 1853 | |
7b392ef0 | 1854 | evlist__start_workload(rec->evlist); |
e803cf97 | 1855 | } |
856e9660 | 1856 | |
1d078ccb AB |
1857 | if (evlist__initialize_ctlfd(rec->evlist, opts->ctl_fd, opts->ctl_fd_ack)) |
1858 | goto out_child; | |
1859 | ||
6619a53e | 1860 | if (opts->initial_delay) { |
68cd3b45 AB |
1861 | pr_info(EVLIST_DISABLED_MSG); |
1862 | if (opts->initial_delay > 0) { | |
1863 | usleep(opts->initial_delay * USEC_PER_MSEC); | |
1864 | evlist__enable(rec->evlist); | |
1865 | pr_info(EVLIST_ENABLED_MSG); | |
1866 | } | |
6619a53e AK |
1867 | } |
1868 | ||
5f9cf599 | 1869 | trigger_ready(&auxtrace_snapshot_trigger); |
3c1cb7e3 | 1870 | trigger_ready(&switch_output_trigger); |
a074865e | 1871 | perf_hooks__invoke_record_start(); |
649c48a9 | 1872 | for (;;) { |
9f065194 | 1873 | unsigned long long hits = rec->samples; |
de9ac07b | 1874 | |
05737464 WN |
1875 | /* |
1876 | * rec->evlist->bkw_mmap_state is possible to be | |
1877 | * BKW_MMAP_EMPTY here: when done == true and | |
1878 | * hits != rec->samples in previous round. | |
1879 | * | |
ade9d208 | 1880 | * evlist__toggle_bkw_mmap ensure we never |
05737464 WN |
1881 | * convert BKW_MMAP_EMPTY to BKW_MMAP_DATA_PENDING. |
1882 | */ | |
1883 | if (trigger_is_hit(&switch_output_trigger) || done || draining) | |
ade9d208 | 1884 | evlist__toggle_bkw_mmap(rec->evlist, BKW_MMAP_DATA_PENDING); |
05737464 | 1885 | |
470530bb | 1886 | if (record__mmap_read_all(rec, false) < 0) { |
5f9cf599 | 1887 | trigger_error(&auxtrace_snapshot_trigger); |
3c1cb7e3 | 1888 | trigger_error(&switch_output_trigger); |
8d3eca20 | 1889 | err = -1; |
45604710 | 1890 | goto out_child; |
8d3eca20 | 1891 | } |
de9ac07b | 1892 | |
2dd6d8a1 AH |
1893 | if (auxtrace_record__snapshot_started) { |
1894 | auxtrace_record__snapshot_started = 0; | |
5f9cf599 | 1895 | if (!trigger_is_error(&auxtrace_snapshot_trigger)) |
ce7b0e42 | 1896 | record__read_auxtrace_snapshot(rec, false); |
5f9cf599 | 1897 | if (trigger_is_error(&auxtrace_snapshot_trigger)) { |
2dd6d8a1 AH |
1898 | pr_err("AUX area tracing snapshot failed\n"); |
1899 | err = -1; | |
1900 | goto out_child; | |
1901 | } | |
1902 | } | |
1903 | ||
3c1cb7e3 | 1904 | if (trigger_is_hit(&switch_output_trigger)) { |
05737464 WN |
1905 | /* |
1906 | * If switch_output_trigger is hit, the data in | |
1907 | * overwritable ring buffer should have been collected, | |
1908 | * so bkw_mmap_state should be set to BKW_MMAP_EMPTY. | |
1909 | * | |
1910 | * If SIGUSR2 raise after or during record__mmap_read_all(), | |
1911 | * record__mmap_read_all() didn't collect data from | |
1912 | * overwritable ring buffer. Read again. | |
1913 | */ | |
1914 | if (rec->evlist->bkw_mmap_state == BKW_MMAP_RUNNING) | |
1915 | continue; | |
3c1cb7e3 WN |
1916 | trigger_ready(&switch_output_trigger); |
1917 | ||
05737464 WN |
1918 | /* |
1919 | * Reenable events in overwrite ring buffer after | |
1920 | * record__mmap_read_all(): we should have collected | |
1921 | * data from it. | |
1922 | */ | |
ade9d208 | 1923 | evlist__toggle_bkw_mmap(rec->evlist, BKW_MMAP_RUNNING); |
05737464 | 1924 | |
3c1cb7e3 WN |
1925 | if (!quiet) |
1926 | fprintf(stderr, "[ perf record: dump data: Woken up %ld times ]\n", | |
1927 | waking); | |
1928 | waking = 0; | |
1929 | fd = record__switch_output(rec, false); | |
1930 | if (fd < 0) { | |
1931 | pr_err("Failed to switch to new file\n"); | |
1932 | trigger_error(&switch_output_trigger); | |
1933 | err = fd; | |
1934 | goto out_child; | |
1935 | } | |
bfacbe3b JO |
1936 | |
1937 | /* re-arm the alarm */ | |
1938 | if (rec->switch_output.time) | |
1939 | alarm(rec->switch_output.time); | |
3c1cb7e3 WN |
1940 | } |
1941 | ||
d20deb64 | 1942 | if (hits == rec->samples) { |
6dcf45ef | 1943 | if (done || draining) |
649c48a9 | 1944 | break; |
80ab2987 | 1945 | err = evlist__poll(rec->evlist, -1); |
a515114f JO |
1946 | /* |
1947 | * Propagate error, only if there's any. Ignore positive | |
1948 | * number of returned events and interrupt error. | |
1949 | */ | |
1950 | if (err > 0 || (err < 0 && errno == EINTR)) | |
45604710 | 1951 | err = 0; |
8b412664 | 1952 | waking++; |
6dcf45ef | 1953 | |
f4009e7b | 1954 | if (evlist__filter_pollfd(rec->evlist, POLLERR | POLLHUP) == 0) |
6dcf45ef | 1955 | draining = true; |
8b412664 PZ |
1956 | } |
1957 | ||
acce0223 AB |
1958 | if (evlist__ctlfd_process(rec->evlist, &cmd) > 0) { |
1959 | switch (cmd) { | |
d20aff15 AH |
1960 | case EVLIST_CTL_CMD_SNAPSHOT: |
1961 | hit_auxtrace_snapshot_trigger(rec); | |
1962 | evlist__ctlfd_ack(rec->evlist); | |
1963 | break; | |
f186cd61 JO |
1964 | case EVLIST_CTL_CMD_STOP: |
1965 | done = 1; | |
1966 | break; | |
acce0223 AB |
1967 | case EVLIST_CTL_CMD_ACK: |
1968 | case EVLIST_CTL_CMD_UNSUPPORTED: | |
991ae4eb JO |
1969 | case EVLIST_CTL_CMD_ENABLE: |
1970 | case EVLIST_CTL_CMD_DISABLE: | |
142544a9 | 1971 | case EVLIST_CTL_CMD_EVLIST: |
47fddcb4 | 1972 | case EVLIST_CTL_CMD_PING: |
acce0223 AB |
1973 | default: |
1974 | break; | |
1975 | } | |
1976 | } | |
1977 | ||
774cb499 JO |
1978 | /* |
1979 | * When perf is starting the traced process, at the end events | |
1980 | * die with the process and we wait for that. Thus no need to | |
1981 | * disable events in this case. | |
1982 | */ | |
602ad878 | 1983 | if (done && !disabled && !target__none(&opts->target)) { |
5f9cf599 | 1984 | trigger_off(&auxtrace_snapshot_trigger); |
e74676de | 1985 | evlist__disable(rec->evlist); |
2711926a JO |
1986 | disabled = true; |
1987 | } | |
de9ac07b | 1988 | } |
ce7b0e42 | 1989 | |
5f9cf599 | 1990 | trigger_off(&auxtrace_snapshot_trigger); |
3c1cb7e3 | 1991 | trigger_off(&switch_output_trigger); |
de9ac07b | 1992 | |
ce7b0e42 AS |
1993 | if (opts->auxtrace_snapshot_on_exit) |
1994 | record__auxtrace_snapshot_exit(rec); | |
1995 | ||
f33cbe72 | 1996 | if (forks && workload_exec_errno) { |
3535a696 | 1997 | char msg[STRERR_BUFSIZE], strevsels[2048]; |
c8b5f2c9 | 1998 | const char *emsg = str_error_r(workload_exec_errno, msg, sizeof(msg)); |
3535a696 ACM |
1999 | |
2000 | evlist__scnprintf_evsels(rec->evlist, sizeof(strevsels), strevsels); | |
2001 | ||
2002 | pr_err("Failed to collect '%s' for the '%s' workload: %s\n", | |
2003 | strevsels, argv[0], emsg); | |
f33cbe72 | 2004 | err = -1; |
45604710 | 2005 | goto out_child; |
f33cbe72 ACM |
2006 | } |
2007 | ||
e3d59112 | 2008 | if (!quiet) |
45604710 | 2009 | fprintf(stderr, "[ perf record: Woken up %ld times to write data ]\n", waking); |
b44308f5 | 2010 | |
4ea648ae WN |
2011 | if (target__none(&rec->opts.target)) |
2012 | record__synthesize_workload(rec, true); | |
2013 | ||
45604710 | 2014 | out_child: |
1d078ccb | 2015 | evlist__finalize_ctlfd(rec->evlist); |
470530bb | 2016 | record__mmap_read_all(rec, true); |
d3d1af6f AB |
2017 | record__aio_mmap_read_sync(rec); |
2018 | ||
d3c8c08e AB |
2019 | if (rec->session->bytes_transferred && rec->session->bytes_compressed) { |
2020 | ratio = (float)rec->session->bytes_transferred/(float)rec->session->bytes_compressed; | |
2021 | session->header.env.comp_ratio = ratio + 0.5; | |
2022 | } | |
2023 | ||
45604710 NK |
2024 | if (forks) { |
2025 | int exit_status; | |
addc2785 | 2026 | |
45604710 NK |
2027 | if (!child_finished) |
2028 | kill(rec->evlist->workload.pid, SIGTERM); | |
2029 | ||
2030 | wait(&exit_status); | |
2031 | ||
2032 | if (err < 0) | |
2033 | status = err; | |
2034 | else if (WIFEXITED(exit_status)) | |
2035 | status = WEXITSTATUS(exit_status); | |
2036 | else if (WIFSIGNALED(exit_status)) | |
2037 | signr = WTERMSIG(exit_status); | |
2038 | } else | |
2039 | status = err; | |
2040 | ||
4ea648ae | 2041 | record__synthesize(rec, true); |
e3d59112 NK |
2042 | /* this will be recalculated during process_buildids() */ |
2043 | rec->samples = 0; | |
2044 | ||
ecfd7a9c WN |
2045 | if (!err) { |
2046 | if (!rec->timestamp_filename) { | |
2047 | record__finish_output(rec); | |
2048 | } else { | |
2049 | fd = record__switch_output(rec, true); | |
2050 | if (fd < 0) { | |
2051 | status = fd; | |
2052 | goto out_delete_session; | |
2053 | } | |
2054 | } | |
2055 | } | |
39d17dac | 2056 | |
a074865e WN |
2057 | perf_hooks__invoke_record_end(); |
2058 | ||
e3d59112 NK |
2059 | if (!err && !quiet) { |
2060 | char samples[128]; | |
ecfd7a9c WN |
2061 | const char *postfix = rec->timestamp_filename ? |
2062 | ".<timestamp>" : ""; | |
e3d59112 | 2063 | |
ef149c25 | 2064 | if (rec->samples && !rec->opts.full_auxtrace) |
e3d59112 NK |
2065 | scnprintf(samples, sizeof(samples), |
2066 | " (%" PRIu64 " samples)", rec->samples); | |
2067 | else | |
2068 | samples[0] = '\0'; | |
2069 | ||
d3c8c08e | 2070 | fprintf(stderr, "[ perf record: Captured and wrote %.3f MB %s%s%s", |
8ceb41d7 | 2071 | perf_data__size(data) / 1024.0 / 1024.0, |
2d4f2799 | 2072 | data->path, postfix, samples); |
d3c8c08e AB |
2073 | if (ratio) { |
2074 | fprintf(stderr, ", compressed (original %.3f MB, ratio is %.3f)", | |
2075 | rec->session->bytes_transferred / 1024.0 / 1024.0, | |
2076 | ratio); | |
2077 | } | |
2078 | fprintf(stderr, " ]\n"); | |
e3d59112 NK |
2079 | } |
2080 | ||
39d17dac | 2081 | out_delete_session: |
da231338 AM |
2082 | #ifdef HAVE_EVENTFD_SUPPORT |
2083 | if (done_fd >= 0) | |
2084 | close(done_fd); | |
2085 | #endif | |
5d7f4116 | 2086 | zstd_fini(&session->zstd_data); |
39d17dac | 2087 | perf_session__delete(session); |
657ee553 SL |
2088 | |
2089 | if (!opts->no_bpf_event) | |
08c83997 | 2090 | evlist__stop_sb_thread(rec->sb_evlist); |
45604710 | 2091 | return status; |
de9ac07b | 2092 | } |
0e9b20b8 | 2093 | |
0883e820 | 2094 | static void callchain_debug(struct callchain_param *callchain) |
09b0fd45 | 2095 | { |
aad2b21c | 2096 | static const char *str[CALLCHAIN_MAX] = { "NONE", "FP", "DWARF", "LBR" }; |
a601fdff | 2097 | |
0883e820 | 2098 | pr_debug("callchain: type %s\n", str[callchain->record_mode]); |
26d33022 | 2099 | |
0883e820 | 2100 | if (callchain->record_mode == CALLCHAIN_DWARF) |
09b0fd45 | 2101 | pr_debug("callchain: stack dump size %d\n", |
0883e820 | 2102 | callchain->dump_size); |
09b0fd45 JO |
2103 | } |
2104 | ||
0883e820 ACM |
2105 | int record_opts__parse_callchain(struct record_opts *record, |
2106 | struct callchain_param *callchain, | |
2107 | const char *arg, bool unset) | |
09b0fd45 | 2108 | { |
09b0fd45 | 2109 | int ret; |
0883e820 | 2110 | callchain->enabled = !unset; |
eb853e80 | 2111 | |
09b0fd45 JO |
2112 | /* --no-call-graph */ |
2113 | if (unset) { | |
0883e820 | 2114 | callchain->record_mode = CALLCHAIN_NONE; |
09b0fd45 JO |
2115 | pr_debug("callchain: disabled\n"); |
2116 | return 0; | |
2117 | } | |
2118 | ||
0883e820 | 2119 | ret = parse_callchain_record_opt(arg, callchain); |
5c0cf224 JO |
2120 | if (!ret) { |
2121 | /* Enable data address sampling for DWARF unwind. */ | |
0883e820 | 2122 | if (callchain->record_mode == CALLCHAIN_DWARF) |
5c0cf224 | 2123 | record->sample_address = true; |
0883e820 | 2124 | callchain_debug(callchain); |
5c0cf224 | 2125 | } |
26d33022 JO |
2126 | |
2127 | return ret; | |
2128 | } | |
2129 | ||
0883e820 ACM |
2130 | int record_parse_callchain_opt(const struct option *opt, |
2131 | const char *arg, | |
2132 | int unset) | |
2133 | { | |
2134 | return record_opts__parse_callchain(opt->value, &callchain_param, arg, unset); | |
2135 | } | |
2136 | ||
c421e80b | 2137 | int record_callchain_opt(const struct option *opt, |
09b0fd45 JO |
2138 | const char *arg __maybe_unused, |
2139 | int unset __maybe_unused) | |
2140 | { | |
2ddd5c04 | 2141 | struct callchain_param *callchain = opt->value; |
c421e80b | 2142 | |
2ddd5c04 | 2143 | callchain->enabled = true; |
09b0fd45 | 2144 | |
2ddd5c04 ACM |
2145 | if (callchain->record_mode == CALLCHAIN_NONE) |
2146 | callchain->record_mode = CALLCHAIN_FP; | |
eb853e80 | 2147 | |
2ddd5c04 | 2148 | callchain_debug(callchain); |
09b0fd45 JO |
2149 | return 0; |
2150 | } | |
2151 | ||
eb853e80 JO |
2152 | static int perf_record_config(const char *var, const char *value, void *cb) |
2153 | { | |
7a29c087 NK |
2154 | struct record *rec = cb; |
2155 | ||
2156 | if (!strcmp(var, "record.build-id")) { | |
2157 | if (!strcmp(value, "cache")) | |
2158 | rec->no_buildid_cache = false; | |
2159 | else if (!strcmp(value, "no-cache")) | |
2160 | rec->no_buildid_cache = true; | |
2161 | else if (!strcmp(value, "skip")) | |
2162 | rec->no_buildid = true; | |
e29386c8 JO |
2163 | else if (!strcmp(value, "mmap")) |
2164 | rec->buildid_mmap = true; | |
7a29c087 NK |
2165 | else |
2166 | return -1; | |
2167 | return 0; | |
2168 | } | |
cff17205 YX |
2169 | if (!strcmp(var, "record.call-graph")) { |
2170 | var = "call-graph.record-mode"; | |
2171 | return perf_default_config(var, value, cb); | |
2172 | } | |
93f20c0f AB |
2173 | #ifdef HAVE_AIO_SUPPORT |
2174 | if (!strcmp(var, "record.aio")) { | |
2175 | rec->opts.nr_cblocks = strtol(value, NULL, 0); | |
2176 | if (!rec->opts.nr_cblocks) | |
2177 | rec->opts.nr_cblocks = nr_cblocks_default; | |
2178 | } | |
2179 | #endif | |
eb853e80 | 2180 | |
cff17205 | 2181 | return 0; |
eb853e80 JO |
2182 | } |
2183 | ||
814c8c38 | 2184 | |
f4fe11b7 AB |
2185 | static int record__parse_affinity(const struct option *opt, const char *str, int unset) |
2186 | { | |
2187 | struct record_opts *opts = (struct record_opts *)opt->value; | |
2188 | ||
2189 | if (unset || !str) | |
2190 | return 0; | |
2191 | ||
2192 | if (!strcasecmp(str, "node")) | |
2193 | opts->affinity = PERF_AFFINITY_NODE; | |
2194 | else if (!strcasecmp(str, "cpu")) | |
2195 | opts->affinity = PERF_AFFINITY_CPU; | |
2196 | ||
2197 | return 0; | |
2198 | } | |
2199 | ||
6d575816 JS |
2200 | static int parse_output_max_size(const struct option *opt, |
2201 | const char *str, int unset) | |
2202 | { | |
2203 | unsigned long *s = (unsigned long *)opt->value; | |
2204 | static struct parse_tag tags_size[] = { | |
2205 | { .tag = 'B', .mult = 1 }, | |
2206 | { .tag = 'K', .mult = 1 << 10 }, | |
2207 | { .tag = 'M', .mult = 1 << 20 }, | |
2208 | { .tag = 'G', .mult = 1 << 30 }, | |
2209 | { .tag = 0 }, | |
2210 | }; | |
2211 | unsigned long val; | |
2212 | ||
2213 | if (unset) { | |
2214 | *s = 0; | |
2215 | return 0; | |
2216 | } | |
2217 | ||
2218 | val = parse_tag_value(str, tags_size); | |
2219 | if (val != (unsigned long) -1) { | |
2220 | *s = val; | |
2221 | return 0; | |
2222 | } | |
2223 | ||
2224 | return -1; | |
2225 | } | |
2226 | ||
e9db1310 AH |
2227 | static int record__parse_mmap_pages(const struct option *opt, |
2228 | const char *str, | |
2229 | int unset __maybe_unused) | |
2230 | { | |
2231 | struct record_opts *opts = opt->value; | |
2232 | char *s, *p; | |
2233 | unsigned int mmap_pages; | |
2234 | int ret; | |
2235 | ||
2236 | if (!str) | |
2237 | return -EINVAL; | |
2238 | ||
2239 | s = strdup(str); | |
2240 | if (!s) | |
2241 | return -ENOMEM; | |
2242 | ||
2243 | p = strchr(s, ','); | |
2244 | if (p) | |
2245 | *p = '\0'; | |
2246 | ||
2247 | if (*s) { | |
25f84702 | 2248 | ret = __evlist__parse_mmap_pages(&mmap_pages, s); |
e9db1310 AH |
2249 | if (ret) |
2250 | goto out_free; | |
2251 | opts->mmap_pages = mmap_pages; | |
2252 | } | |
2253 | ||
2254 | if (!p) { | |
2255 | ret = 0; | |
2256 | goto out_free; | |
2257 | } | |
2258 | ||
25f84702 | 2259 | ret = __evlist__parse_mmap_pages(&mmap_pages, p + 1); |
e9db1310 AH |
2260 | if (ret) |
2261 | goto out_free; | |
2262 | ||
2263 | opts->auxtrace_mmap_pages = mmap_pages; | |
2264 | ||
2265 | out_free: | |
2266 | free(s); | |
2267 | return ret; | |
2268 | } | |
2269 | ||
1d078ccb AB |
2270 | static int parse_control_option(const struct option *opt, |
2271 | const char *str, | |
2272 | int unset __maybe_unused) | |
2273 | { | |
9864a66d | 2274 | struct record_opts *opts = opt->value; |
1d078ccb | 2275 | |
a8fcbd26 AH |
2276 | return evlist__parse_control(str, &opts->ctl_fd, &opts->ctl_fd_ack, &opts->ctl_fd_close); |
2277 | } | |
2278 | ||
0c582449 JO |
2279 | static void switch_output_size_warn(struct record *rec) |
2280 | { | |
9521b5f2 | 2281 | u64 wakeup_size = evlist__mmap_size(rec->opts.mmap_pages); |
0c582449 JO |
2282 | struct switch_output *s = &rec->switch_output; |
2283 | ||
2284 | wakeup_size /= 2; | |
2285 | ||
2286 | if (s->size < wakeup_size) { | |
2287 | char buf[100]; | |
2288 | ||
2289 | unit_number__scnprintf(buf, sizeof(buf), wakeup_size); | |
2290 | pr_warning("WARNING: switch-output data size lower than " | |
2291 | "wakeup kernel buffer size (%s) " | |
2292 | "expect bigger perf.data sizes\n", buf); | |
2293 | } | |
2294 | } | |
2295 | ||
cb4e1ebb JO |
2296 | static int switch_output_setup(struct record *rec) |
2297 | { | |
2298 | struct switch_output *s = &rec->switch_output; | |
dc0c6127 JO |
2299 | static struct parse_tag tags_size[] = { |
2300 | { .tag = 'B', .mult = 1 }, | |
2301 | { .tag = 'K', .mult = 1 << 10 }, | |
2302 | { .tag = 'M', .mult = 1 << 20 }, | |
2303 | { .tag = 'G', .mult = 1 << 30 }, | |
2304 | { .tag = 0 }, | |
2305 | }; | |
bfacbe3b JO |
2306 | static struct parse_tag tags_time[] = { |
2307 | { .tag = 's', .mult = 1 }, | |
2308 | { .tag = 'm', .mult = 60 }, | |
2309 | { .tag = 'h', .mult = 60*60 }, | |
2310 | { .tag = 'd', .mult = 60*60*24 }, | |
2311 | { .tag = 0 }, | |
2312 | }; | |
dc0c6127 | 2313 | unsigned long val; |
cb4e1ebb | 2314 | |
899e5ffb ACM |
2315 | /* |
2316 | * If we're using --switch-output-events, then we imply its | |
2317 | * --switch-output=signal, as we'll send a SIGUSR2 from the side band | |
2318 | * thread to its parent. | |
2319 | */ | |
2320 | if (rec->switch_output_event_set) | |
2321 | goto do_signal; | |
2322 | ||
cb4e1ebb JO |
2323 | if (!s->set) |
2324 | return 0; | |
2325 | ||
2326 | if (!strcmp(s->str, "signal")) { | |
899e5ffb | 2327 | do_signal: |
cb4e1ebb JO |
2328 | s->signal = true; |
2329 | pr_debug("switch-output with SIGUSR2 signal\n"); | |
dc0c6127 JO |
2330 | goto enabled; |
2331 | } | |
2332 | ||
2333 | val = parse_tag_value(s->str, tags_size); | |
2334 | if (val != (unsigned long) -1) { | |
2335 | s->size = val; | |
2336 | pr_debug("switch-output with %s size threshold\n", s->str); | |
2337 | goto enabled; | |
cb4e1ebb JO |
2338 | } |
2339 | ||
bfacbe3b JO |
2340 | val = parse_tag_value(s->str, tags_time); |
2341 | if (val != (unsigned long) -1) { | |
2342 | s->time = val; | |
2343 | pr_debug("switch-output with %s time threshold (%lu seconds)\n", | |
2344 | s->str, s->time); | |
2345 | goto enabled; | |
2346 | } | |
2347 | ||
cb4e1ebb | 2348 | return -1; |
dc0c6127 JO |
2349 | |
2350 | enabled: | |
2351 | rec->timestamp_filename = true; | |
2352 | s->enabled = true; | |
0c582449 JO |
2353 | |
2354 | if (s->size && !rec->opts.no_buffering) | |
2355 | switch_output_size_warn(rec); | |
2356 | ||
dc0c6127 | 2357 | return 0; |
cb4e1ebb JO |
2358 | } |
2359 | ||
e5b2c207 | 2360 | static const char * const __record_usage[] = { |
9e096753 MG |
2361 | "perf record [<options>] [<command>]", |
2362 | "perf record [<options>] -- <command> [<options>]", | |
0e9b20b8 IM |
2363 | NULL |
2364 | }; | |
e5b2c207 | 2365 | const char * const *record_usage = __record_usage; |
0e9b20b8 | 2366 | |
6e0a9b3d ACM |
2367 | static int build_id__process_mmap(struct perf_tool *tool, union perf_event *event, |
2368 | struct perf_sample *sample, struct machine *machine) | |
2369 | { | |
2370 | /* | |
2371 | * We already have the kernel maps, put in place via perf_session__create_kernel_maps() | |
2372 | * no need to add them twice. | |
2373 | */ | |
2374 | if (!(event->header.misc & PERF_RECORD_MISC_USER)) | |
2375 | return 0; | |
2376 | return perf_event__process_mmap(tool, event, sample, machine); | |
2377 | } | |
2378 | ||
2379 | static int build_id__process_mmap2(struct perf_tool *tool, union perf_event *event, | |
2380 | struct perf_sample *sample, struct machine *machine) | |
2381 | { | |
2382 | /* | |
2383 | * We already have the kernel maps, put in place via perf_session__create_kernel_maps() | |
2384 | * no need to add them twice. | |
2385 | */ | |
2386 | if (!(event->header.misc & PERF_RECORD_MISC_USER)) | |
2387 | return 0; | |
2388 | ||
2389 | return perf_event__process_mmap2(tool, event, sample, machine); | |
2390 | } | |
2391 | ||
66286ed3 AH |
2392 | static int process_timestamp_boundary(struct perf_tool *tool, |
2393 | union perf_event *event __maybe_unused, | |
2394 | struct perf_sample *sample, | |
2395 | struct machine *machine __maybe_unused) | |
2396 | { | |
2397 | struct record *rec = container_of(tool, struct record, tool); | |
2398 | ||
2399 | set_timestamp_boundary(rec, sample->time); | |
2400 | return 0; | |
2401 | } | |
2402 | ||
41b740b6 NK |
2403 | static int parse_record_synth_option(const struct option *opt, |
2404 | const char *str, | |
2405 | int unset __maybe_unused) | |
2406 | { | |
2407 | struct record_opts *opts = opt->value; | |
2408 | char *p = strdup(str); | |
2409 | ||
2410 | if (p == NULL) | |
2411 | return -1; | |
2412 | ||
2413 | opts->synth = parse_synth_opt(p); | |
2414 | free(p); | |
2415 | ||
2416 | if (opts->synth < 0) { | |
2417 | pr_err("Invalid synth option: %s\n", str); | |
2418 | return -1; | |
2419 | } | |
2420 | return 0; | |
2421 | } | |
2422 | ||
d20deb64 | 2423 | /* |
8c6f45a7 ACM |
2424 | * XXX Ideally would be local to cmd_record() and passed to a record__new |
2425 | * because we need to have access to it in record__exit, that is called | |
d20deb64 ACM |
2426 | * after cmd_record() exits, but since record_options need to be accessible to |
2427 | * builtin-script, leave it here. | |
2428 | * | |
2429 | * At least we don't ouch it in all the other functions here directly. | |
2430 | * | |
2431 | * Just say no to tons of global variables, sigh. | |
2432 | */ | |
8c6f45a7 | 2433 | static struct record record = { |
d20deb64 | 2434 | .opts = { |
8affc2b8 | 2435 | .sample_time = true, |
d20deb64 ACM |
2436 | .mmap_pages = UINT_MAX, |
2437 | .user_freq = UINT_MAX, | |
2438 | .user_interval = ULLONG_MAX, | |
447a6013 | 2439 | .freq = 4000, |
d1cb9fce NK |
2440 | .target = { |
2441 | .uses_mmap = true, | |
3aa5939d | 2442 | .default_per_cpu = true, |
d1cb9fce | 2443 | }, |
470530bb | 2444 | .mmap_flush = MMAP_FLUSH_DEFAULT, |
d99c22ea | 2445 | .nr_threads_synthesize = 1, |
1d078ccb AB |
2446 | .ctl_fd = -1, |
2447 | .ctl_fd_ack = -1, | |
41b740b6 | 2448 | .synth = PERF_SYNTH_ALL, |
d20deb64 | 2449 | }, |
e3d59112 NK |
2450 | .tool = { |
2451 | .sample = process_sample_event, | |
2452 | .fork = perf_event__process_fork, | |
cca8482c | 2453 | .exit = perf_event__process_exit, |
e3d59112 | 2454 | .comm = perf_event__process_comm, |
f3b3614a | 2455 | .namespaces = perf_event__process_namespaces, |
6e0a9b3d ACM |
2456 | .mmap = build_id__process_mmap, |
2457 | .mmap2 = build_id__process_mmap2, | |
66286ed3 AH |
2458 | .itrace_start = process_timestamp_boundary, |
2459 | .aux = process_timestamp_boundary, | |
cca8482c | 2460 | .ordered_events = true, |
e3d59112 | 2461 | }, |
d20deb64 | 2462 | }; |
7865e817 | 2463 | |
76a26549 NK |
2464 | const char record_callchain_help[] = CALLCHAIN_RECORD_HELP |
2465 | "\n\t\t\t\tDefault: fp"; | |
61eaa3be | 2466 | |
0aab2136 WN |
2467 | static bool dry_run; |
2468 | ||
d20deb64 ACM |
2469 | /* |
2470 | * XXX Will stay a global variable till we fix builtin-script.c to stop messing | |
2471 | * with it and switch to use the library functions in perf_evlist that came | |
b4006796 | 2472 | * from builtin-record.c, i.e. use record_opts, |
7b392ef0 | 2473 | * evlist__prepare_workload, etc instead of fork+exec'in 'perf record', |
d20deb64 ACM |
2474 | * using pipes, etc. |
2475 | */ | |
efd21307 | 2476 | static struct option __record_options[] = { |
d20deb64 | 2477 | OPT_CALLBACK('e', "event", &record.evlist, "event", |
86847b62 | 2478 | "event selector. use 'perf list' to list available events", |
f120f9d5 | 2479 | parse_events_option), |
d20deb64 | 2480 | OPT_CALLBACK(0, "filter", &record.evlist, "filter", |
c171b552 | 2481 | "event filter", parse_filter), |
4ba1faa1 WN |
2482 | OPT_CALLBACK_NOOPT(0, "exclude-perf", &record.evlist, |
2483 | NULL, "don't record events from perf itself", | |
2484 | exclude_perf), | |
bea03405 | 2485 | OPT_STRING('p', "pid", &record.opts.target.pid, "pid", |
d6d901c2 | 2486 | "record events on existing process id"), |
bea03405 | 2487 | OPT_STRING('t', "tid", &record.opts.target.tid, "tid", |
d6d901c2 | 2488 | "record events on existing thread id"), |
d20deb64 | 2489 | OPT_INTEGER('r', "realtime", &record.realtime_prio, |
0e9b20b8 | 2490 | "collect data with this RT SCHED_FIFO priority"), |
509051ea | 2491 | OPT_BOOLEAN(0, "no-buffering", &record.opts.no_buffering, |
acac03fa | 2492 | "collect data without buffering"), |
d20deb64 | 2493 | OPT_BOOLEAN('R', "raw-samples", &record.opts.raw_samples, |
daac07b2 | 2494 | "collect raw sample records from all opened counters"), |
bea03405 | 2495 | OPT_BOOLEAN('a', "all-cpus", &record.opts.target.system_wide, |
0e9b20b8 | 2496 | "system-wide collection from all CPUs"), |
bea03405 | 2497 | OPT_STRING('C', "cpu", &record.opts.target.cpu_list, "cpu", |
c45c6ea2 | 2498 | "list of cpus to monitor"), |
d20deb64 | 2499 | OPT_U64('c', "count", &record.opts.user_interval, "event period to sample"), |
2d4f2799 | 2500 | OPT_STRING('o', "output", &record.data.path, "file", |
abaff32a | 2501 | "output file name"), |
69e7e5b0 AH |
2502 | OPT_BOOLEAN_SET('i', "no-inherit", &record.opts.no_inherit, |
2503 | &record.opts.no_inherit_set, | |
2504 | "child tasks do not inherit counters"), | |
4ea648ae WN |
2505 | OPT_BOOLEAN(0, "tail-synthesize", &record.opts.tail_synthesize, |
2506 | "synthesize non-sample events at the end of output"), | |
626a6b78 | 2507 | OPT_BOOLEAN(0, "overwrite", &record.opts.overwrite, "use overwrite mode"), |
a060c1f1 | 2508 | OPT_BOOLEAN(0, "no-bpf-event", &record.opts.no_bpf_event, "do not record bpf events"), |
b09c2364 ACM |
2509 | OPT_BOOLEAN(0, "strict-freq", &record.opts.strict_freq, |
2510 | "Fail if the specified frequency can't be used"), | |
67230479 ACM |
2511 | OPT_CALLBACK('F', "freq", &record.opts, "freq or 'max'", |
2512 | "profile at this frequency", | |
2513 | record__parse_freq), | |
e9db1310 AH |
2514 | OPT_CALLBACK('m', "mmap-pages", &record.opts, "pages[,pages]", |
2515 | "number of mmap data pages and AUX area tracing mmap pages", | |
2516 | record__parse_mmap_pages), | |
470530bb AB |
2517 | OPT_CALLBACK(0, "mmap-flush", &record.opts, "number", |
2518 | "Minimal number of bytes that is extracted from mmap data pages (default: 1)", | |
2519 | record__mmap_flush_parse), | |
d20deb64 | 2520 | OPT_BOOLEAN(0, "group", &record.opts.group, |
43bece79 | 2521 | "put the counters into a counter group"), |
2ddd5c04 | 2522 | OPT_CALLBACK_NOOPT('g', NULL, &callchain_param, |
09b0fd45 JO |
2523 | NULL, "enables call-graph recording" , |
2524 | &record_callchain_opt), | |
2525 | OPT_CALLBACK(0, "call-graph", &record.opts, | |
76a26549 | 2526 | "record_mode[,record_size]", record_callchain_help, |
09b0fd45 | 2527 | &record_parse_callchain_opt), |
c0555642 | 2528 | OPT_INCR('v', "verbose", &verbose, |
3da297a6 | 2529 | "be more verbose (show counter open errors, etc)"), |
b44308f5 | 2530 | OPT_BOOLEAN('q', "quiet", &quiet, "don't print any message"), |
d20deb64 | 2531 | OPT_BOOLEAN('s', "stat", &record.opts.inherit_stat, |
649c48a9 | 2532 | "per thread counts"), |
56100321 | 2533 | OPT_BOOLEAN('d', "data", &record.opts.sample_address, "Record the sample addresses"), |
3b0a5daa KL |
2534 | OPT_BOOLEAN(0, "phys-data", &record.opts.sample_phys_addr, |
2535 | "Record the sample physical addresses"), | |
542b88fd KL |
2536 | OPT_BOOLEAN(0, "data-page-size", &record.opts.sample_data_page_size, |
2537 | "Record the sampled data address data page size"), | |
c1de7f3d KL |
2538 | OPT_BOOLEAN(0, "code-page-size", &record.opts.sample_code_page_size, |
2539 | "Record the sampled code address (ip) page size"), | |
b6f35ed7 | 2540 | OPT_BOOLEAN(0, "sample-cpu", &record.opts.sample_cpu, "Record the sample cpu"), |
3abebc55 AH |
2541 | OPT_BOOLEAN_SET('T', "timestamp", &record.opts.sample_time, |
2542 | &record.opts.sample_time_set, | |
2543 | "Record the sample timestamps"), | |
f290aa1f JO |
2544 | OPT_BOOLEAN_SET('P', "period", &record.opts.period, &record.opts.period_set, |
2545 | "Record the sample period"), | |
d20deb64 | 2546 | OPT_BOOLEAN('n', "no-samples", &record.opts.no_samples, |
649c48a9 | 2547 | "don't sample"), |
d2db9a98 WN |
2548 | OPT_BOOLEAN_SET('N', "no-buildid-cache", &record.no_buildid_cache, |
2549 | &record.no_buildid_cache_set, | |
2550 | "do not update the buildid cache"), | |
2551 | OPT_BOOLEAN_SET('B', "no-buildid", &record.no_buildid, | |
2552 | &record.no_buildid_set, | |
2553 | "do not collect buildids in perf.data"), | |
d20deb64 | 2554 | OPT_CALLBACK('G', "cgroup", &record.evlist, "name", |
023695d9 SE |
2555 | "monitor event in cgroup name only", |
2556 | parse_cgroups), | |
68cd3b45 AB |
2557 | OPT_INTEGER('D', "delay", &record.opts.initial_delay, |
2558 | "ms to wait before starting measurement after program start (-1: start with events disabled)"), | |
eeb399b5 | 2559 | OPT_BOOLEAN(0, "kcore", &record.opts.kcore, "copy /proc/kcore"), |
bea03405 NK |
2560 | OPT_STRING('u', "uid", &record.opts.target.uid_str, "user", |
2561 | "user to profile"), | |
a5aabdac SE |
2562 | |
2563 | OPT_CALLBACK_NOOPT('b', "branch-any", &record.opts.branch_stack, | |
2564 | "branch any", "sample any taken branches", | |
2565 | parse_branch_stack), | |
2566 | ||
2567 | OPT_CALLBACK('j', "branch-filter", &record.opts.branch_stack, | |
2568 | "branch filter mask", "branch stack filter modes", | |
bdfebd84 | 2569 | parse_branch_stack), |
05484298 AK |
2570 | OPT_BOOLEAN('W', "weight", &record.opts.sample_weight, |
2571 | "sample by weight (on special events only)"), | |
475eeab9 AK |
2572 | OPT_BOOLEAN(0, "transaction", &record.opts.sample_transaction, |
2573 | "sample transaction flags (special events only)"), | |
3aa5939d AH |
2574 | OPT_BOOLEAN(0, "per-thread", &record.opts.target.per_thread, |
2575 | "use per-thread mmaps"), | |
bcc84ec6 SE |
2576 | OPT_CALLBACK_OPTARG('I', "intr-regs", &record.opts.sample_intr_regs, NULL, "any register", |
2577 | "sample selected machine registers on interrupt," | |
aeea9062 | 2578 | " use '-I?' to list register names", parse_intr_regs), |
84c41742 AK |
2579 | OPT_CALLBACK_OPTARG(0, "user-regs", &record.opts.sample_user_regs, NULL, "any register", |
2580 | "sample selected machine registers on interrupt," | |
aeea9062 | 2581 | " use '--user-regs=?' to list register names", parse_user_regs), |
85c273d2 AK |
2582 | OPT_BOOLEAN(0, "running-time", &record.opts.running_time, |
2583 | "Record running/enabled time of read (:S) events"), | |
814c8c38 PZ |
2584 | OPT_CALLBACK('k', "clockid", &record.opts, |
2585 | "clockid", "clockid to use for events, see clock_gettime()", | |
2586 | parse_clockid), | |
2dd6d8a1 AH |
2587 | OPT_STRING_OPTARG('S', "snapshot", &record.opts.auxtrace_snapshot_opts, |
2588 | "opts", "AUX area tracing Snapshot Mode", ""), | |
c0a6de06 AH |
2589 | OPT_STRING_OPTARG(0, "aux-sample", &record.opts.auxtrace_sample_opts, |
2590 | "opts", "sample AUX area", ""), | |
3fcb10e4 | 2591 | OPT_UINTEGER(0, "proc-map-timeout", &proc_map_timeout, |
9d9cad76 | 2592 | "per thread proc mmap processing timeout in ms"), |
f3b3614a HB |
2593 | OPT_BOOLEAN(0, "namespaces", &record.opts.record_namespaces, |
2594 | "Record namespaces events"), | |
8fb4b679 NK |
2595 | OPT_BOOLEAN(0, "all-cgroups", &record.opts.record_cgroup, |
2596 | "Record cgroup events"), | |
16b4b4e1 AH |
2597 | OPT_BOOLEAN_SET(0, "switch-events", &record.opts.record_switch_events, |
2598 | &record.opts.record_switch_events_set, | |
2599 | "Record context switch events"), | |
85723885 JO |
2600 | OPT_BOOLEAN_FLAG(0, "all-kernel", &record.opts.all_kernel, |
2601 | "Configure all used events to run in kernel space.", | |
2602 | PARSE_OPT_EXCLUSIVE), | |
2603 | OPT_BOOLEAN_FLAG(0, "all-user", &record.opts.all_user, | |
2604 | "Configure all used events to run in user space.", | |
2605 | PARSE_OPT_EXCLUSIVE), | |
53651b28 | 2606 | OPT_BOOLEAN(0, "kernel-callchains", &record.opts.kernel_callchains, |
2607 | "collect kernel callchains"), | |
2608 | OPT_BOOLEAN(0, "user-callchains", &record.opts.user_callchains, | |
2609 | "collect user callchains"), | |
71dc2326 WN |
2610 | OPT_STRING(0, "clang-path", &llvm_param.clang_path, "clang path", |
2611 | "clang binary to use for compiling BPF scriptlets"), | |
2612 | OPT_STRING(0, "clang-opt", &llvm_param.clang_opt, "clang options", | |
2613 | "options passed to clang when compiling BPF scriptlets"), | |
7efe0e03 HK |
2614 | OPT_STRING(0, "vmlinux", &symbol_conf.vmlinux_name, |
2615 | "file", "vmlinux pathname"), | |
6156681b NK |
2616 | OPT_BOOLEAN(0, "buildid-all", &record.buildid_all, |
2617 | "Record build-id of all DSOs regardless of hits"), | |
e29386c8 JO |
2618 | OPT_BOOLEAN(0, "buildid-mmap", &record.buildid_mmap, |
2619 | "Record build-id in map events"), | |
ecfd7a9c WN |
2620 | OPT_BOOLEAN(0, "timestamp-filename", &record.timestamp_filename, |
2621 | "append timestamp to output filename"), | |
68588baf JY |
2622 | OPT_BOOLEAN(0, "timestamp-boundary", &record.timestamp_boundary, |
2623 | "Record timestamp boundary (time of first/last samples)"), | |
cb4e1ebb | 2624 | OPT_STRING_OPTARG_SET(0, "switch-output", &record.switch_output.str, |
c38dab7d AK |
2625 | &record.switch_output.set, "signal or size[BKMG] or time[smhd]", |
2626 | "Switch output when receiving SIGUSR2 (signal) or cross a size or time threshold", | |
dc0c6127 | 2627 | "signal"), |
899e5ffb ACM |
2628 | OPT_CALLBACK_SET(0, "switch-output-event", &record.sb_evlist, &record.switch_output_event_set, "switch output event", |
2629 | "switch output event selector. use 'perf list' to list available events", | |
2630 | parse_events_option_new_evlist), | |
03724b2e AK |
2631 | OPT_INTEGER(0, "switch-max-files", &record.switch_output.num_files, |
2632 | "Limit number of switch output generated files"), | |
0aab2136 WN |
2633 | OPT_BOOLEAN(0, "dry-run", &dry_run, |
2634 | "Parse options then exit"), | |
d3d1af6f | 2635 | #ifdef HAVE_AIO_SUPPORT |
93f20c0f AB |
2636 | OPT_CALLBACK_OPTARG(0, "aio", &record.opts, |
2637 | &nr_cblocks_default, "n", "Use <n> control blocks in asynchronous trace writing mode (default: 1, max: 4)", | |
d3d1af6f AB |
2638 | record__aio_parse), |
2639 | #endif | |
f4fe11b7 AB |
2640 | OPT_CALLBACK(0, "affinity", &record.opts, "node|cpu", |
2641 | "Set affinity mask of trace reading thread to NUMA node cpu mask or cpu of processed mmap buffer", | |
2642 | record__parse_affinity), | |
504c1ad1 AB |
2643 | #ifdef HAVE_ZSTD_SUPPORT |
2644 | OPT_CALLBACK_OPTARG('z', "compression-level", &record.opts, &comp_level_default, | |
2645 | "n", "Compressed records using specified level (default: 1 - fastest compression, 22 - greatest compression)", | |
2646 | record__parse_comp_level), | |
2647 | #endif | |
6d575816 JS |
2648 | OPT_CALLBACK(0, "max-size", &record.output_max_size, |
2649 | "size", "Limit the maximum size of the output file", parse_output_max_size), | |
d99c22ea SE |
2650 | OPT_UINTEGER(0, "num-thread-synthesize", |
2651 | &record.opts.nr_threads_synthesize, | |
2652 | "number of threads to run for event synthesis"), | |
70943490 SE |
2653 | #ifdef HAVE_LIBPFM |
2654 | OPT_CALLBACK(0, "pfm-events", &record.evlist, "event", | |
2655 | "libpfm4 event selector. use 'perf list' to list available events", | |
2656 | parse_libpfm_events_option), | |
2657 | #endif | |
a8fcbd26 | 2658 | OPT_CALLBACK(0, "control", &record.opts, "fd:ctl-fd[,ack-fd] or fifo:ctl-fifo[,ack-fifo]", |
d20aff15 AH |
2659 | "Listen on ctl-fd descriptor for command to control measurement ('enable': enable events, 'disable': disable events,\n" |
2660 | "\t\t\t 'snapshot': AUX area tracing snapshot).\n" | |
a8fcbd26 AH |
2661 | "\t\t\t Optionally send control command completion ('ack\\n') to ack-fd descriptor.\n" |
2662 | "\t\t\t Alternatively, ctl-fifo / ack-fifo will be opened and used as ctl-fd / ack-fd.", | |
1d078ccb | 2663 | parse_control_option), |
41b740b6 NK |
2664 | OPT_CALLBACK(0, "synth", &record.opts, "no|all|task|mmap|cgroup", |
2665 | "Fine-tune event synthesis: default=all", parse_record_synth_option), | |
0e9b20b8 IM |
2666 | OPT_END() |
2667 | }; | |
2668 | ||
e5b2c207 NK |
2669 | struct option *record_options = __record_options; |
2670 | ||
b0ad8ea6 | 2671 | int cmd_record(int argc, const char **argv) |
0e9b20b8 | 2672 | { |
ef149c25 | 2673 | int err; |
8c6f45a7 | 2674 | struct record *rec = &record; |
16ad2ffb | 2675 | char errbuf[BUFSIZ]; |
0e9b20b8 | 2676 | |
67230479 ACM |
2677 | setlocale(LC_ALL, ""); |
2678 | ||
48e1cab1 WN |
2679 | #ifndef HAVE_LIBBPF_SUPPORT |
2680 | # define set_nobuild(s, l, c) set_option_nobuild(record_options, s, l, "NO_LIBBPF=1", c) | |
2681 | set_nobuild('\0', "clang-path", true); | |
2682 | set_nobuild('\0', "clang-opt", true); | |
2683 | # undef set_nobuild | |
7efe0e03 HK |
2684 | #endif |
2685 | ||
2686 | #ifndef HAVE_BPF_PROLOGUE | |
2687 | # if !defined (HAVE_DWARF_SUPPORT) | |
2688 | # define REASON "NO_DWARF=1" | |
2689 | # elif !defined (HAVE_LIBBPF_SUPPORT) | |
2690 | # define REASON "NO_LIBBPF=1" | |
2691 | # else | |
2692 | # define REASON "this architecture doesn't support BPF prologue" | |
2693 | # endif | |
2694 | # define set_nobuild(s, l, c) set_option_nobuild(record_options, s, l, REASON, c) | |
2695 | set_nobuild('\0', "vmlinux", true); | |
2696 | # undef set_nobuild | |
2697 | # undef REASON | |
48e1cab1 WN |
2698 | #endif |
2699 | ||
9d2ed645 AB |
2700 | rec->opts.affinity = PERF_AFFINITY_SYS; |
2701 | ||
0f98b11c | 2702 | rec->evlist = evlist__new(); |
3e2be2da | 2703 | if (rec->evlist == NULL) |
361c99a6 ACM |
2704 | return -ENOMEM; |
2705 | ||
ecc4c561 ACM |
2706 | err = perf_config(perf_record_config, rec); |
2707 | if (err) | |
2708 | return err; | |
eb853e80 | 2709 | |
bca647aa | 2710 | argc = parse_options(argc, argv, record_options, record_usage, |
655000e7 | 2711 | PARSE_OPT_STOP_AT_NON_OPTION); |
68ba3235 NK |
2712 | if (quiet) |
2713 | perf_quiet_option(); | |
483635a9 JO |
2714 | |
2715 | /* Make system wide (-a) the default target. */ | |
602ad878 | 2716 | if (!argc && target__none(&rec->opts.target)) |
483635a9 | 2717 | rec->opts.target.system_wide = true; |
0e9b20b8 | 2718 | |
bea03405 | 2719 | if (nr_cgroups && !rec->opts.target.system_wide) { |
c7118369 NK |
2720 | usage_with_options_msg(record_usage, record_options, |
2721 | "cgroup monitoring only available in system-wide mode"); | |
2722 | ||
023695d9 | 2723 | } |
504c1ad1 | 2724 | |
e29386c8 JO |
2725 | if (rec->buildid_mmap) { |
2726 | if (!perf_can_record_build_id()) { | |
2727 | pr_err("Failed: no support to record build id in mmap events, update your kernel.\n"); | |
2728 | err = -EINVAL; | |
2729 | goto out_opts; | |
2730 | } | |
2731 | pr_debug("Enabling build id in mmap2 events.\n"); | |
2732 | /* Enable mmap build id synthesizing. */ | |
2733 | symbol_conf.buildid_mmap2 = true; | |
2734 | /* Enable perf_event_attr::build_id bit. */ | |
2735 | rec->opts.build_id = true; | |
2736 | /* Disable build id cache. */ | |
2737 | rec->no_buildid = true; | |
2738 | } | |
2739 | ||
4f2abe91 NK |
2740 | if (rec->opts.record_cgroup && !perf_can_record_cgroup()) { |
2741 | pr_err("Kernel has no cgroup sampling support.\n"); | |
2742 | err = -EINVAL; | |
2743 | goto out_opts; | |
2744 | } | |
2745 | ||
eeb399b5 AH |
2746 | if (rec->opts.kcore) |
2747 | rec->data.is_dir = true; | |
2748 | ||
504c1ad1 AB |
2749 | if (rec->opts.comp_level != 0) { |
2750 | pr_debug("Compression enabled, disabling build id collection at the end of the session.\n"); | |
2751 | rec->no_buildid = true; | |
2752 | } | |
2753 | ||
b757bb09 AH |
2754 | if (rec->opts.record_switch_events && |
2755 | !perf_can_record_switch_events()) { | |
c7118369 NK |
2756 | ui__error("kernel does not support recording context switch events\n"); |
2757 | parse_options_usage(record_usage, record_options, "switch-events", 0); | |
a8fcbd26 AH |
2758 | err = -EINVAL; |
2759 | goto out_opts; | |
b757bb09 | 2760 | } |
023695d9 | 2761 | |
cb4e1ebb JO |
2762 | if (switch_output_setup(rec)) { |
2763 | parse_options_usage(record_usage, record_options, "switch-output", 0); | |
a8fcbd26 AH |
2764 | err = -EINVAL; |
2765 | goto out_opts; | |
cb4e1ebb JO |
2766 | } |
2767 | ||
bfacbe3b JO |
2768 | if (rec->switch_output.time) { |
2769 | signal(SIGALRM, alarm_sig_handler); | |
2770 | alarm(rec->switch_output.time); | |
2771 | } | |
2772 | ||
03724b2e AK |
2773 | if (rec->switch_output.num_files) { |
2774 | rec->switch_output.filenames = calloc(sizeof(char *), | |
2775 | rec->switch_output.num_files); | |
a8fcbd26 AH |
2776 | if (!rec->switch_output.filenames) { |
2777 | err = -EINVAL; | |
2778 | goto out_opts; | |
2779 | } | |
03724b2e AK |
2780 | } |
2781 | ||
1b36c03e AH |
2782 | /* |
2783 | * Allow aliases to facilitate the lookup of symbols for address | |
2784 | * filters. Refer to auxtrace_parse_filters(). | |
2785 | */ | |
2786 | symbol_conf.allow_aliases = true; | |
2787 | ||
2788 | symbol__init(NULL); | |
2789 | ||
8384a260 AB |
2790 | if (rec->opts.affinity != PERF_AFFINITY_SYS) { |
2791 | rec->affinity_mask.nbits = cpu__max_cpu(); | |
7fc5b571 | 2792 | rec->affinity_mask.bits = bitmap_zalloc(rec->affinity_mask.nbits); |
8384a260 AB |
2793 | if (!rec->affinity_mask.bits) { |
2794 | pr_err("Failed to allocate thread mask for %zd cpus\n", rec->affinity_mask.nbits); | |
a8fcbd26 AH |
2795 | err = -ENOMEM; |
2796 | goto out_opts; | |
8384a260 AB |
2797 | } |
2798 | pr_debug2("thread mask[%zd]: empty\n", rec->affinity_mask.nbits); | |
2799 | } | |
2800 | ||
4b5ea3bd | 2801 | err = record__auxtrace_init(rec); |
1b36c03e AH |
2802 | if (err) |
2803 | goto out; | |
2804 | ||
0aab2136 | 2805 | if (dry_run) |
5c01ad60 | 2806 | goto out; |
0aab2136 | 2807 | |
d7888573 WN |
2808 | err = bpf__setup_stdout(rec->evlist); |
2809 | if (err) { | |
2810 | bpf__strerror_setup_stdout(rec->evlist, err, errbuf, sizeof(errbuf)); | |
2811 | pr_err("ERROR: Setup BPF stdout failed: %s\n", | |
2812 | errbuf); | |
5c01ad60 | 2813 | goto out; |
d7888573 WN |
2814 | } |
2815 | ||
ef149c25 AH |
2816 | err = -ENOMEM; |
2817 | ||
0c1d46a8 | 2818 | if (rec->no_buildid_cache || rec->no_buildid) { |
a1ac1d3c | 2819 | disable_buildid_cache(); |
dc0c6127 | 2820 | } else if (rec->switch_output.enabled) { |
0c1d46a8 WN |
2821 | /* |
2822 | * In 'perf record --switch-output', disable buildid | |
2823 | * generation by default to reduce data file switching | |
2824 | * overhead. Still generate buildid if they are required | |
2825 | * explicitly using | |
2826 | * | |
60437ac0 | 2827 | * perf record --switch-output --no-no-buildid \ |
0c1d46a8 WN |
2828 | * --no-no-buildid-cache |
2829 | * | |
2830 | * Following code equals to: | |
2831 | * | |
2832 | * if ((rec->no_buildid || !rec->no_buildid_set) && | |
2833 | * (rec->no_buildid_cache || !rec->no_buildid_cache_set)) | |
2834 | * disable_buildid_cache(); | |
2835 | */ | |
2836 | bool disable = true; | |
2837 | ||
2838 | if (rec->no_buildid_set && !rec->no_buildid) | |
2839 | disable = false; | |
2840 | if (rec->no_buildid_cache_set && !rec->no_buildid_cache) | |
2841 | disable = false; | |
2842 | if (disable) { | |
2843 | rec->no_buildid = true; | |
2844 | rec->no_buildid_cache = true; | |
2845 | disable_buildid_cache(); | |
2846 | } | |
2847 | } | |
655000e7 | 2848 | |
4ea648ae WN |
2849 | if (record.opts.overwrite) |
2850 | record.opts.tail_synthesize = true; | |
2851 | ||
b53a0755 JY |
2852 | if (rec->evlist->core.nr_entries == 0) { |
2853 | if (perf_pmu__has_hybrid()) { | |
2854 | err = evlist__add_default_hybrid(rec->evlist, | |
2855 | !record.opts.no_samples); | |
2856 | } else { | |
2857 | err = __evlist__add_default(rec->evlist, | |
2858 | !record.opts.no_samples); | |
2859 | } | |
2860 | ||
2861 | if (err < 0) { | |
2862 | pr_err("Not enough memory for event selector list\n"); | |
2863 | goto out; | |
2864 | } | |
bbd36e5e | 2865 | } |
0e9b20b8 | 2866 | |
69e7e5b0 AH |
2867 | if (rec->opts.target.tid && !rec->opts.no_inherit_set) |
2868 | rec->opts.no_inherit = true; | |
2869 | ||
602ad878 | 2870 | err = target__validate(&rec->opts.target); |
16ad2ffb | 2871 | if (err) { |
602ad878 | 2872 | target__strerror(&rec->opts.target, err, errbuf, BUFSIZ); |
c3dec27b | 2873 | ui__warning("%s\n", errbuf); |
16ad2ffb NK |
2874 | } |
2875 | ||
602ad878 | 2876 | err = target__parse_uid(&rec->opts.target); |
16ad2ffb NK |
2877 | if (err) { |
2878 | int saved_errno = errno; | |
4bd0f2d2 | 2879 | |
602ad878 | 2880 | target__strerror(&rec->opts.target, err, errbuf, BUFSIZ); |
3780f488 | 2881 | ui__error("%s", errbuf); |
16ad2ffb NK |
2882 | |
2883 | err = -saved_errno; | |
394c01ed | 2884 | goto out; |
16ad2ffb | 2885 | } |
0d37aa34 | 2886 | |
ca800068 MZ |
2887 | /* Enable ignoring missing threads when -u/-p option is defined. */ |
2888 | rec->opts.ignore_missing_thread = rec->opts.target.uid != UINT_MAX || rec->opts.target.pid; | |
23dc4f15 | 2889 | |
1d3351e6 JY |
2890 | if (evlist__fix_hybrid_cpus(rec->evlist, rec->opts.target.cpu_list)) { |
2891 | pr_err("failed to use cpu list %s\n", | |
2892 | rec->opts.target.cpu_list); | |
2893 | goto out; | |
2894 | } | |
2895 | ||
2896 | rec->opts.target.hybrid = perf_pmu__has_hybrid(); | |
16ad2ffb | 2897 | err = -ENOMEM; |
7748bb71 | 2898 | if (evlist__create_maps(rec->evlist, &rec->opts.target) < 0) |
dd7927f4 | 2899 | usage_with_options(record_usage, record_options); |
69aad6f1 | 2900 | |
ef149c25 AH |
2901 | err = auxtrace_record__options(rec->itr, rec->evlist, &rec->opts); |
2902 | if (err) | |
394c01ed | 2903 | goto out; |
ef149c25 | 2904 | |
6156681b NK |
2905 | /* |
2906 | * We take all buildids when the file contains | |
2907 | * AUX area tracing data because we do not decode the | |
2908 | * trace because it would take too long. | |
2909 | */ | |
2910 | if (rec->opts.full_auxtrace) | |
2911 | rec->buildid_all = true; | |
2912 | ||
246eba8e AH |
2913 | if (rec->opts.text_poke) { |
2914 | err = record__config_text_poke(rec->evlist); | |
2915 | if (err) { | |
2916 | pr_err("record__config_text_poke failed, error %d\n", err); | |
2917 | goto out; | |
2918 | } | |
2919 | } | |
2920 | ||
b4006796 | 2921 | if (record_opts__config(&rec->opts)) { |
39d17dac | 2922 | err = -EINVAL; |
394c01ed | 2923 | goto out; |
7e4ff9e3 MG |
2924 | } |
2925 | ||
93f20c0f AB |
2926 | if (rec->opts.nr_cblocks > nr_cblocks_max) |
2927 | rec->opts.nr_cblocks = nr_cblocks_max; | |
5d7f4116 | 2928 | pr_debug("nr_cblocks: %d\n", rec->opts.nr_cblocks); |
d3d1af6f | 2929 | |
9d2ed645 | 2930 | pr_debug("affinity: %s\n", affinity_tags[rec->opts.affinity]); |
470530bb | 2931 | pr_debug("mmap flush: %d\n", rec->opts.mmap_flush); |
9d2ed645 | 2932 | |
51255a8a AB |
2933 | if (rec->opts.comp_level > comp_level_max) |
2934 | rec->opts.comp_level = comp_level_max; | |
2935 | pr_debug("comp level: %d\n", rec->opts.comp_level); | |
2936 | ||
d20deb64 | 2937 | err = __cmd_record(&record, argc, argv); |
394c01ed | 2938 | out: |
8384a260 | 2939 | bitmap_free(rec->affinity_mask.bits); |
c12995a5 | 2940 | evlist__delete(rec->evlist); |
d65a458b | 2941 | symbol__exit(); |
ef149c25 | 2942 | auxtrace_record__free(rec->itr); |
a8fcbd26 | 2943 | out_opts: |
ee7fe31e | 2944 | evlist__close_control(rec->opts.ctl_fd, rec->opts.ctl_fd_ack, &rec->opts.ctl_fd_close); |
39d17dac | 2945 | return err; |
0e9b20b8 | 2946 | } |
2dd6d8a1 AH |
2947 | |
2948 | static void snapshot_sig_handler(int sig __maybe_unused) | |
2949 | { | |
dc0c6127 JO |
2950 | struct record *rec = &record; |
2951 | ||
d20aff15 | 2952 | hit_auxtrace_snapshot_trigger(rec); |
3c1cb7e3 | 2953 | |
dc0c6127 | 2954 | if (switch_output_signal(rec)) |
3c1cb7e3 | 2955 | trigger_hit(&switch_output_trigger); |
2dd6d8a1 | 2956 | } |
bfacbe3b JO |
2957 | |
2958 | static void alarm_sig_handler(int sig __maybe_unused) | |
2959 | { | |
2960 | struct record *rec = &record; | |
2961 | ||
2962 | if (switch_output_time(rec)) | |
2963 | trigger_hit(&switch_output_trigger); | |
2964 | } |