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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 IM |
10 | |
11 | #include "perf.h" | |
12 | ||
6122e4e4 | 13 | #include "util/build-id.h" |
6eda5838 | 14 | #include "util/util.h" |
4b6ab94e | 15 | #include <subcmd/parse-options.h> |
8ad8db37 | 16 | #include "util/parse-events.h" |
41840d21 | 17 | #include "util/config.h" |
6eda5838 | 18 | |
8f651eae | 19 | #include "util/callchain.h" |
f14d5707 | 20 | #include "util/cgroup.h" |
7c6a1c65 | 21 | #include "util/header.h" |
66e274f3 | 22 | #include "util/event.h" |
361c99a6 | 23 | #include "util/evlist.h" |
69aad6f1 | 24 | #include "util/evsel.h" |
8f28827a | 25 | #include "util/debug.h" |
5d8bb1ec | 26 | #include "util/drv_configs.h" |
94c744b6 | 27 | #include "util/session.h" |
45694aa7 | 28 | #include "util/tool.h" |
8d06367f | 29 | #include "util/symbol.h" |
a12b51c4 | 30 | #include "util/cpumap.h" |
fd78260b | 31 | #include "util/thread_map.h" |
f5fc1412 | 32 | #include "util/data.h" |
bcc84ec6 | 33 | #include "util/perf_regs.h" |
ef149c25 | 34 | #include "util/auxtrace.h" |
46bc29b9 | 35 | #include "util/tsc.h" |
f00898f4 | 36 | #include "util/parse-branch-options.h" |
bcc84ec6 | 37 | #include "util/parse-regs-options.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" |
c5e4027e | 42 | #include "util/time-utils.h" |
58db1d6e | 43 | #include "util/units.h" |
d8871ea7 | 44 | #include "asm/bug.h" |
7c6a1c65 | 45 | |
a43783ae | 46 | #include <errno.h> |
fd20e811 | 47 | #include <inttypes.h> |
67230479 | 48 | #include <locale.h> |
4208735d | 49 | #include <poll.h> |
97124d5e | 50 | #include <unistd.h> |
de9ac07b | 51 | #include <sched.h> |
9607ad3a | 52 | #include <signal.h> |
a41794cd | 53 | #include <sys/mman.h> |
4208735d | 54 | #include <sys/wait.h> |
0693e680 | 55 | #include <linux/time64.h> |
78da39fa | 56 | |
1b43b704 | 57 | struct switch_output { |
dc0c6127 | 58 | bool enabled; |
1b43b704 | 59 | bool signal; |
dc0c6127 | 60 | unsigned long size; |
bfacbe3b | 61 | unsigned long time; |
cb4e1ebb JO |
62 | const char *str; |
63 | bool set; | |
1b43b704 JO |
64 | }; |
65 | ||
8c6f45a7 | 66 | struct record { |
45694aa7 | 67 | struct perf_tool tool; |
b4006796 | 68 | struct record_opts opts; |
d20deb64 | 69 | u64 bytes_written; |
8ceb41d7 | 70 | struct perf_data data; |
ef149c25 | 71 | struct auxtrace_record *itr; |
d20deb64 ACM |
72 | struct perf_evlist *evlist; |
73 | struct perf_session *session; | |
74 | const char *progname; | |
d20deb64 | 75 | int realtime_prio; |
d20deb64 | 76 | bool no_buildid; |
d2db9a98 | 77 | bool no_buildid_set; |
d20deb64 | 78 | bool no_buildid_cache; |
d2db9a98 | 79 | bool no_buildid_cache_set; |
6156681b | 80 | bool buildid_all; |
ecfd7a9c | 81 | bool timestamp_filename; |
68588baf | 82 | bool timestamp_boundary; |
1b43b704 | 83 | struct switch_output switch_output; |
9f065194 | 84 | unsigned long long samples; |
0f82ebc4 | 85 | }; |
a21ca2ca | 86 | |
dc0c6127 JO |
87 | static volatile int auxtrace_record__snapshot_started; |
88 | static DEFINE_TRIGGER(auxtrace_snapshot_trigger); | |
89 | static DEFINE_TRIGGER(switch_output_trigger); | |
90 | ||
91 | static bool switch_output_signal(struct record *rec) | |
92 | { | |
93 | return rec->switch_output.signal && | |
94 | trigger_is_ready(&switch_output_trigger); | |
95 | } | |
96 | ||
97 | static bool switch_output_size(struct record *rec) | |
98 | { | |
99 | return rec->switch_output.size && | |
100 | trigger_is_ready(&switch_output_trigger) && | |
101 | (rec->bytes_written >= rec->switch_output.size); | |
102 | } | |
103 | ||
bfacbe3b JO |
104 | static bool switch_output_time(struct record *rec) |
105 | { | |
106 | return rec->switch_output.time && | |
107 | trigger_is_ready(&switch_output_trigger); | |
108 | } | |
109 | ||
8c6f45a7 | 110 | static int record__write(struct record *rec, void *bf, size_t size) |
f5970550 | 111 | { |
8ceb41d7 | 112 | if (perf_data__write(rec->session->data, bf, size) < 0) { |
50a9b868 JO |
113 | pr_err("failed to write perf data, error: %m\n"); |
114 | return -1; | |
f5970550 | 115 | } |
8d3eca20 | 116 | |
cf8b2e69 | 117 | rec->bytes_written += size; |
dc0c6127 JO |
118 | |
119 | if (switch_output_size(rec)) | |
120 | trigger_hit(&switch_output_trigger); | |
121 | ||
8d3eca20 | 122 | return 0; |
f5970550 PZ |
123 | } |
124 | ||
45694aa7 | 125 | static int process_synthesized_event(struct perf_tool *tool, |
d20deb64 | 126 | union perf_event *event, |
1d037ca1 IT |
127 | struct perf_sample *sample __maybe_unused, |
128 | struct machine *machine __maybe_unused) | |
234fbbf5 | 129 | { |
8c6f45a7 ACM |
130 | struct record *rec = container_of(tool, struct record, tool); |
131 | return record__write(rec, event, event->header.size); | |
234fbbf5 ACM |
132 | } |
133 | ||
d37f1586 ACM |
134 | static int record__pushfn(void *to, void *bf, size_t size) |
135 | { | |
136 | struct record *rec = to; | |
137 | ||
138 | rec->samples++; | |
139 | return record__write(rec, bf, size); | |
140 | } | |
141 | ||
2dd6d8a1 AH |
142 | static volatile int done; |
143 | static volatile int signr = -1; | |
144 | static volatile int child_finished; | |
c0bdc1c4 | 145 | |
2dd6d8a1 AH |
146 | static void sig_handler(int sig) |
147 | { | |
148 | if (sig == SIGCHLD) | |
149 | child_finished = 1; | |
150 | else | |
151 | signr = sig; | |
152 | ||
153 | done = 1; | |
154 | } | |
155 | ||
a074865e WN |
156 | static void sigsegv_handler(int sig) |
157 | { | |
158 | perf_hooks__recover(); | |
159 | sighandler_dump_stack(sig); | |
160 | } | |
161 | ||
2dd6d8a1 AH |
162 | static void record__sig_exit(void) |
163 | { | |
164 | if (signr == -1) | |
165 | return; | |
166 | ||
167 | signal(signr, SIG_DFL); | |
168 | raise(signr); | |
169 | } | |
170 | ||
e31f0d01 AH |
171 | #ifdef HAVE_AUXTRACE_SUPPORT |
172 | ||
ef149c25 AH |
173 | static int record__process_auxtrace(struct perf_tool *tool, |
174 | union perf_event *event, void *data1, | |
175 | size_t len1, void *data2, size_t len2) | |
176 | { | |
177 | struct record *rec = container_of(tool, struct record, tool); | |
8ceb41d7 | 178 | struct perf_data *data = &rec->data; |
ef149c25 AH |
179 | size_t padding; |
180 | u8 pad[8] = {0}; | |
181 | ||
8ceb41d7 | 182 | if (!perf_data__is_pipe(data)) { |
99fa2984 | 183 | off_t file_offset; |
8ceb41d7 | 184 | int fd = perf_data__fd(data); |
99fa2984 AH |
185 | int err; |
186 | ||
187 | file_offset = lseek(fd, 0, SEEK_CUR); | |
188 | if (file_offset == -1) | |
189 | return -1; | |
190 | err = auxtrace_index__auxtrace_event(&rec->session->auxtrace_index, | |
191 | event, file_offset); | |
192 | if (err) | |
193 | return err; | |
194 | } | |
195 | ||
ef149c25 AH |
196 | /* event.auxtrace.size includes padding, see __auxtrace_mmap__read() */ |
197 | padding = (len1 + len2) & 7; | |
198 | if (padding) | |
199 | padding = 8 - padding; | |
200 | ||
201 | record__write(rec, event, event->header.size); | |
202 | record__write(rec, data1, len1); | |
203 | if (len2) | |
204 | record__write(rec, data2, len2); | |
205 | record__write(rec, &pad, padding); | |
206 | ||
207 | return 0; | |
208 | } | |
209 | ||
210 | static int record__auxtrace_mmap_read(struct record *rec, | |
211 | struct auxtrace_mmap *mm) | |
212 | { | |
213 | int ret; | |
214 | ||
215 | ret = auxtrace_mmap__read(mm, rec->itr, &rec->tool, | |
216 | record__process_auxtrace); | |
217 | if (ret < 0) | |
218 | return ret; | |
219 | ||
220 | if (ret) | |
221 | rec->samples++; | |
222 | ||
223 | return 0; | |
224 | } | |
225 | ||
2dd6d8a1 AH |
226 | static int record__auxtrace_mmap_read_snapshot(struct record *rec, |
227 | struct auxtrace_mmap *mm) | |
228 | { | |
229 | int ret; | |
230 | ||
231 | ret = auxtrace_mmap__read_snapshot(mm, rec->itr, &rec->tool, | |
232 | record__process_auxtrace, | |
233 | rec->opts.auxtrace_snapshot_size); | |
234 | if (ret < 0) | |
235 | return ret; | |
236 | ||
237 | if (ret) | |
238 | rec->samples++; | |
239 | ||
240 | return 0; | |
241 | } | |
242 | ||
243 | static int record__auxtrace_read_snapshot_all(struct record *rec) | |
244 | { | |
245 | int i; | |
246 | int rc = 0; | |
247 | ||
248 | for (i = 0; i < rec->evlist->nr_mmaps; i++) { | |
249 | struct auxtrace_mmap *mm = | |
250 | &rec->evlist->mmap[i].auxtrace_mmap; | |
251 | ||
252 | if (!mm->base) | |
253 | continue; | |
254 | ||
255 | if (record__auxtrace_mmap_read_snapshot(rec, mm) != 0) { | |
256 | rc = -1; | |
257 | goto out; | |
258 | } | |
259 | } | |
260 | out: | |
261 | return rc; | |
262 | } | |
263 | ||
264 | static void record__read_auxtrace_snapshot(struct record *rec) | |
265 | { | |
266 | pr_debug("Recording AUX area tracing snapshot\n"); | |
267 | if (record__auxtrace_read_snapshot_all(rec) < 0) { | |
5f9cf599 | 268 | trigger_error(&auxtrace_snapshot_trigger); |
2dd6d8a1 | 269 | } else { |
5f9cf599 WN |
270 | if (auxtrace_record__snapshot_finish(rec->itr)) |
271 | trigger_error(&auxtrace_snapshot_trigger); | |
272 | else | |
273 | trigger_ready(&auxtrace_snapshot_trigger); | |
2dd6d8a1 AH |
274 | } |
275 | } | |
276 | ||
e31f0d01 AH |
277 | #else |
278 | ||
279 | static inline | |
280 | int record__auxtrace_mmap_read(struct record *rec __maybe_unused, | |
281 | struct auxtrace_mmap *mm __maybe_unused) | |
282 | { | |
283 | return 0; | |
284 | } | |
285 | ||
2dd6d8a1 AH |
286 | static inline |
287 | void record__read_auxtrace_snapshot(struct record *rec __maybe_unused) | |
de9ac07b | 288 | { |
f7b7c26e PZ |
289 | } |
290 | ||
2dd6d8a1 AH |
291 | static inline |
292 | int auxtrace_record__snapshot_start(struct auxtrace_record *itr __maybe_unused) | |
f7b7c26e | 293 | { |
2dd6d8a1 | 294 | return 0; |
de9ac07b PZ |
295 | } |
296 | ||
2dd6d8a1 AH |
297 | #endif |
298 | ||
cda57a8c WN |
299 | static int record__mmap_evlist(struct record *rec, |
300 | struct perf_evlist *evlist) | |
301 | { | |
302 | struct record_opts *opts = &rec->opts; | |
303 | char msg[512]; | |
304 | ||
7a276ff6 | 305 | if (perf_evlist__mmap_ex(evlist, opts->mmap_pages, |
cda57a8c WN |
306 | opts->auxtrace_mmap_pages, |
307 | opts->auxtrace_snapshot_mode) < 0) { | |
308 | if (errno == EPERM) { | |
309 | pr_err("Permission error mapping pages.\n" | |
310 | "Consider increasing " | |
311 | "/proc/sys/kernel/perf_event_mlock_kb,\n" | |
312 | "or try again with a smaller value of -m/--mmap_pages.\n" | |
313 | "(current value: %u,%u)\n", | |
314 | opts->mmap_pages, opts->auxtrace_mmap_pages); | |
315 | return -errno; | |
316 | } else { | |
317 | pr_err("failed to mmap with %d (%s)\n", errno, | |
c8b5f2c9 | 318 | str_error_r(errno, msg, sizeof(msg))); |
cda57a8c WN |
319 | if (errno) |
320 | return -errno; | |
321 | else | |
322 | return -EINVAL; | |
323 | } | |
324 | } | |
325 | return 0; | |
326 | } | |
327 | ||
328 | static int record__mmap(struct record *rec) | |
329 | { | |
330 | return record__mmap_evlist(rec, rec->evlist); | |
331 | } | |
332 | ||
8c6f45a7 | 333 | static int record__open(struct record *rec) |
dd7927f4 | 334 | { |
d6195a6a | 335 | char msg[BUFSIZ]; |
6a4bb04c | 336 | struct perf_evsel *pos; |
d20deb64 ACM |
337 | struct perf_evlist *evlist = rec->evlist; |
338 | struct perf_session *session = rec->session; | |
b4006796 | 339 | struct record_opts *opts = &rec->opts; |
5d8bb1ec | 340 | struct perf_evsel_config_term *err_term; |
8d3eca20 | 341 | int rc = 0; |
dd7927f4 | 342 | |
d3dbf43c ACM |
343 | /* |
344 | * For initial_delay we need to add a dummy event so that we can track | |
345 | * PERF_RECORD_MMAP while we wait for the initial delay to enable the | |
346 | * real events, the ones asked by the user. | |
347 | */ | |
348 | if (opts->initial_delay) { | |
349 | if (perf_evlist__add_dummy(evlist)) | |
350 | return -ENOMEM; | |
351 | ||
352 | pos = perf_evlist__first(evlist); | |
353 | pos->tracking = 0; | |
354 | pos = perf_evlist__last(evlist); | |
355 | pos->tracking = 1; | |
356 | pos->attr.enable_on_exec = 1; | |
357 | } | |
358 | ||
e68ae9cf | 359 | perf_evlist__config(evlist, opts, &callchain_param); |
cac21425 | 360 | |
e5cadb93 | 361 | evlist__for_each_entry(evlist, pos) { |
dd7927f4 | 362 | try_again: |
d988d5ee | 363 | if (perf_evsel__open(pos, pos->cpus, pos->threads) < 0) { |
56e52e85 | 364 | if (perf_evsel__fallback(pos, errno, msg, sizeof(msg))) { |
bb963e16 | 365 | if (verbose > 0) |
c0a54341 | 366 | ui__warning("%s\n", msg); |
d6d901c2 ZY |
367 | goto try_again; |
368 | } | |
ca6a4258 | 369 | |
56e52e85 ACM |
370 | rc = -errno; |
371 | perf_evsel__open_strerror(pos, &opts->target, | |
372 | errno, msg, sizeof(msg)); | |
373 | ui__error("%s\n", msg); | |
8d3eca20 | 374 | goto out; |
c171b552 | 375 | } |
bfd8f72c AK |
376 | |
377 | pos->supported = true; | |
c171b552 | 378 | } |
a43d3f08 | 379 | |
23d4aad4 | 380 | if (perf_evlist__apply_filters(evlist, &pos)) { |
62d94b00 | 381 | pr_err("failed to set filter \"%s\" on event %s with %d (%s)\n", |
23d4aad4 | 382 | pos->filter, perf_evsel__name(pos), errno, |
c8b5f2c9 | 383 | str_error_r(errno, msg, sizeof(msg))); |
8d3eca20 | 384 | rc = -1; |
5d8bb1ec MP |
385 | goto out; |
386 | } | |
387 | ||
388 | if (perf_evlist__apply_drv_configs(evlist, &pos, &err_term)) { | |
62d94b00 | 389 | pr_err("failed to set config \"%s\" on event %s with %d (%s)\n", |
5d8bb1ec MP |
390 | err_term->val.drv_cfg, perf_evsel__name(pos), errno, |
391 | str_error_r(errno, msg, sizeof(msg))); | |
392 | rc = -1; | |
8d3eca20 | 393 | goto out; |
0a102479 FW |
394 | } |
395 | ||
cda57a8c WN |
396 | rc = record__mmap(rec); |
397 | if (rc) | |
8d3eca20 | 398 | goto out; |
0a27d7f9 | 399 | |
563aecb2 | 400 | session->evlist = evlist; |
7b56cce2 | 401 | perf_session__set_id_hdr_size(session); |
8d3eca20 DA |
402 | out: |
403 | return rc; | |
16c8a109 PZ |
404 | } |
405 | ||
e3d59112 NK |
406 | static int process_sample_event(struct perf_tool *tool, |
407 | union perf_event *event, | |
408 | struct perf_sample *sample, | |
409 | struct perf_evsel *evsel, | |
410 | struct machine *machine) | |
411 | { | |
412 | struct record *rec = container_of(tool, struct record, tool); | |
413 | ||
68588baf JY |
414 | if (rec->evlist->first_sample_time == 0) |
415 | rec->evlist->first_sample_time = sample->time; | |
416 | ||
417 | rec->evlist->last_sample_time = sample->time; | |
e3d59112 | 418 | |
68588baf JY |
419 | if (rec->buildid_all) |
420 | return 0; | |
421 | ||
422 | rec->samples++; | |
e3d59112 NK |
423 | return build_id__mark_dso_hit(tool, event, sample, evsel, machine); |
424 | } | |
425 | ||
8c6f45a7 | 426 | static int process_buildids(struct record *rec) |
6122e4e4 | 427 | { |
8ceb41d7 | 428 | struct perf_data *data = &rec->data; |
f5fc1412 | 429 | struct perf_session *session = rec->session; |
6122e4e4 | 430 | |
8ceb41d7 | 431 | if (data->size == 0) |
9f591fd7 ACM |
432 | return 0; |
433 | ||
00dc8657 NK |
434 | /* |
435 | * During this process, it'll load kernel map and replace the | |
436 | * dso->long_name to a real pathname it found. In this case | |
437 | * we prefer the vmlinux path like | |
438 | * /lib/modules/3.16.4/build/vmlinux | |
439 | * | |
440 | * rather than build-id path (in debug directory). | |
441 | * $HOME/.debug/.build-id/f0/6e17aa50adf4d00b88925e03775de107611551 | |
442 | */ | |
443 | symbol_conf.ignore_vmlinux_buildid = true; | |
444 | ||
6156681b NK |
445 | /* |
446 | * If --buildid-all is given, it marks all DSO regardless of hits, | |
68588baf JY |
447 | * so no need to process samples. But if timestamp_boundary is enabled, |
448 | * it still needs to walk on all samples to get the timestamps of | |
449 | * first/last samples. | |
6156681b | 450 | */ |
68588baf | 451 | if (rec->buildid_all && !rec->timestamp_boundary) |
6156681b NK |
452 | rec->tool.sample = NULL; |
453 | ||
b7b61cbe | 454 | return perf_session__process_events(session); |
6122e4e4 ACM |
455 | } |
456 | ||
8115d60c | 457 | static void perf_event__synthesize_guest_os(struct machine *machine, void *data) |
a1645ce1 ZY |
458 | { |
459 | int err; | |
45694aa7 | 460 | struct perf_tool *tool = data; |
a1645ce1 ZY |
461 | /* |
462 | *As for guest kernel when processing subcommand record&report, | |
463 | *we arrange module mmap prior to guest kernel mmap and trigger | |
464 | *a preload dso because default guest module symbols are loaded | |
465 | *from guest kallsyms instead of /lib/modules/XXX/XXX. This | |
466 | *method is used to avoid symbol missing when the first addr is | |
467 | *in module instead of in guest kernel. | |
468 | */ | |
45694aa7 | 469 | err = perf_event__synthesize_modules(tool, process_synthesized_event, |
743eb868 | 470 | machine); |
a1645ce1 ZY |
471 | if (err < 0) |
472 | pr_err("Couldn't record guest kernel [%d]'s reference" | |
23346f21 | 473 | " relocation symbol.\n", machine->pid); |
a1645ce1 | 474 | |
a1645ce1 ZY |
475 | /* |
476 | * We use _stext for guest kernel because guest kernel's /proc/kallsyms | |
477 | * have no _text sometimes. | |
478 | */ | |
45694aa7 | 479 | err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event, |
0ae617be | 480 | machine); |
a1645ce1 ZY |
481 | if (err < 0) |
482 | pr_err("Couldn't record guest kernel [%d]'s reference" | |
23346f21 | 483 | " relocation symbol.\n", machine->pid); |
a1645ce1 ZY |
484 | } |
485 | ||
98402807 FW |
486 | static struct perf_event_header finished_round_event = { |
487 | .size = sizeof(struct perf_event_header), | |
488 | .type = PERF_RECORD_FINISHED_ROUND, | |
489 | }; | |
490 | ||
a4ea0ec4 | 491 | static int record__mmap_read_evlist(struct record *rec, struct perf_evlist *evlist, |
0b72d69a | 492 | bool overwrite) |
98402807 | 493 | { |
dcabb507 | 494 | u64 bytes_written = rec->bytes_written; |
0e2e63dd | 495 | int i; |
8d3eca20 | 496 | int rc = 0; |
a4ea0ec4 | 497 | struct perf_mmap *maps; |
98402807 | 498 | |
cb21686b WN |
499 | if (!evlist) |
500 | return 0; | |
ef149c25 | 501 | |
0b72d69a | 502 | maps = overwrite ? evlist->overwrite_mmap : evlist->mmap; |
a4ea0ec4 WN |
503 | if (!maps) |
504 | return 0; | |
505 | ||
0b72d69a | 506 | if (overwrite && evlist->bkw_mmap_state != BKW_MMAP_DATA_PENDING) |
54cc54de WN |
507 | return 0; |
508 | ||
cb21686b | 509 | for (i = 0; i < evlist->nr_mmaps; i++) { |
a4ea0ec4 | 510 | struct auxtrace_mmap *mm = &maps[i].auxtrace_mmap; |
cb21686b | 511 | |
a4ea0ec4 | 512 | if (maps[i].base) { |
0b72d69a | 513 | if (perf_mmap__push(&maps[i], overwrite, rec, record__pushfn) != 0) { |
8d3eca20 DA |
514 | rc = -1; |
515 | goto out; | |
516 | } | |
517 | } | |
ef149c25 | 518 | |
2dd6d8a1 | 519 | if (mm->base && !rec->opts.auxtrace_snapshot_mode && |
ef149c25 AH |
520 | record__auxtrace_mmap_read(rec, mm) != 0) { |
521 | rc = -1; | |
522 | goto out; | |
523 | } | |
98402807 FW |
524 | } |
525 | ||
dcabb507 JO |
526 | /* |
527 | * Mark the round finished in case we wrote | |
528 | * at least one event. | |
529 | */ | |
530 | if (bytes_written != rec->bytes_written) | |
531 | rc = record__write(rec, &finished_round_event, sizeof(finished_round_event)); | |
8d3eca20 | 532 | |
0b72d69a | 533 | if (overwrite) |
54cc54de | 534 | perf_evlist__toggle_bkw_mmap(evlist, BKW_MMAP_EMPTY); |
8d3eca20 DA |
535 | out: |
536 | return rc; | |
98402807 FW |
537 | } |
538 | ||
cb21686b WN |
539 | static int record__mmap_read_all(struct record *rec) |
540 | { | |
541 | int err; | |
542 | ||
a4ea0ec4 | 543 | err = record__mmap_read_evlist(rec, rec->evlist, false); |
cb21686b WN |
544 | if (err) |
545 | return err; | |
546 | ||
05737464 | 547 | return record__mmap_read_evlist(rec, rec->evlist, true); |
cb21686b WN |
548 | } |
549 | ||
8c6f45a7 | 550 | static void record__init_features(struct record *rec) |
57706abc | 551 | { |
57706abc DA |
552 | struct perf_session *session = rec->session; |
553 | int feat; | |
554 | ||
555 | for (feat = HEADER_FIRST_FEATURE; feat < HEADER_LAST_FEATURE; feat++) | |
556 | perf_header__set_feat(&session->header, feat); | |
557 | ||
558 | if (rec->no_buildid) | |
559 | perf_header__clear_feat(&session->header, HEADER_BUILD_ID); | |
560 | ||
3e2be2da | 561 | if (!have_tracepoints(&rec->evlist->entries)) |
57706abc DA |
562 | perf_header__clear_feat(&session->header, HEADER_TRACING_DATA); |
563 | ||
564 | if (!rec->opts.branch_stack) | |
565 | perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK); | |
ef149c25 AH |
566 | |
567 | if (!rec->opts.full_auxtrace) | |
568 | perf_header__clear_feat(&session->header, HEADER_AUXTRACE); | |
ffa517ad JO |
569 | |
570 | perf_header__clear_feat(&session->header, HEADER_STAT); | |
57706abc DA |
571 | } |
572 | ||
e1ab48ba WN |
573 | static void |
574 | record__finish_output(struct record *rec) | |
575 | { | |
8ceb41d7 JO |
576 | struct perf_data *data = &rec->data; |
577 | int fd = perf_data__fd(data); | |
e1ab48ba | 578 | |
8ceb41d7 | 579 | if (data->is_pipe) |
e1ab48ba WN |
580 | return; |
581 | ||
582 | rec->session->header.data_size += rec->bytes_written; | |
8ceb41d7 | 583 | data->size = lseek(perf_data__fd(data), 0, SEEK_CUR); |
e1ab48ba WN |
584 | |
585 | if (!rec->no_buildid) { | |
586 | process_buildids(rec); | |
587 | ||
588 | if (rec->buildid_all) | |
589 | dsos__hit_all(rec->session); | |
590 | } | |
591 | perf_session__write_header(rec->session, rec->evlist, fd, true); | |
592 | ||
593 | return; | |
594 | } | |
595 | ||
4ea648ae | 596 | static int record__synthesize_workload(struct record *rec, bool tail) |
be7b0c9e | 597 | { |
9d6aae72 ACM |
598 | int err; |
599 | struct thread_map *thread_map; | |
be7b0c9e | 600 | |
4ea648ae WN |
601 | if (rec->opts.tail_synthesize != tail) |
602 | return 0; | |
603 | ||
9d6aae72 ACM |
604 | thread_map = thread_map__new_by_tid(rec->evlist->workload.pid); |
605 | if (thread_map == NULL) | |
606 | return -1; | |
607 | ||
608 | err = perf_event__synthesize_thread_map(&rec->tool, thread_map, | |
be7b0c9e WN |
609 | process_synthesized_event, |
610 | &rec->session->machines.host, | |
611 | rec->opts.sample_address, | |
612 | rec->opts.proc_map_timeout); | |
9d6aae72 ACM |
613 | thread_map__put(thread_map); |
614 | return err; | |
be7b0c9e WN |
615 | } |
616 | ||
4ea648ae | 617 | static int record__synthesize(struct record *rec, bool tail); |
3c1cb7e3 | 618 | |
ecfd7a9c WN |
619 | static int |
620 | record__switch_output(struct record *rec, bool at_exit) | |
621 | { | |
8ceb41d7 | 622 | struct perf_data *data = &rec->data; |
ecfd7a9c WN |
623 | int fd, err; |
624 | ||
625 | /* Same Size: "2015122520103046"*/ | |
626 | char timestamp[] = "InvalidTimestamp"; | |
627 | ||
4ea648ae WN |
628 | record__synthesize(rec, true); |
629 | if (target__none(&rec->opts.target)) | |
630 | record__synthesize_workload(rec, true); | |
631 | ||
ecfd7a9c WN |
632 | rec->samples = 0; |
633 | record__finish_output(rec); | |
634 | err = fetch_current_timestamp(timestamp, sizeof(timestamp)); | |
635 | if (err) { | |
636 | pr_err("Failed to get current timestamp\n"); | |
637 | return -EINVAL; | |
638 | } | |
639 | ||
8ceb41d7 | 640 | fd = perf_data__switch(data, timestamp, |
ecfd7a9c WN |
641 | rec->session->header.data_offset, |
642 | at_exit); | |
643 | if (fd >= 0 && !at_exit) { | |
644 | rec->bytes_written = 0; | |
645 | rec->session->header.data_size = 0; | |
646 | } | |
647 | ||
648 | if (!quiet) | |
649 | fprintf(stderr, "[ perf record: Dump %s.%s ]\n", | |
eae8ad80 | 650 | data->file.path, timestamp); |
3c1cb7e3 WN |
651 | |
652 | /* Output tracking events */ | |
be7b0c9e | 653 | if (!at_exit) { |
4ea648ae | 654 | record__synthesize(rec, false); |
3c1cb7e3 | 655 | |
be7b0c9e WN |
656 | /* |
657 | * In 'perf record --switch-output' without -a, | |
658 | * record__synthesize() in record__switch_output() won't | |
659 | * generate tracking events because there's no thread_map | |
660 | * in evlist. Which causes newly created perf.data doesn't | |
661 | * contain map and comm information. | |
662 | * Create a fake thread_map and directly call | |
663 | * perf_event__synthesize_thread_map() for those events. | |
664 | */ | |
665 | if (target__none(&rec->opts.target)) | |
4ea648ae | 666 | record__synthesize_workload(rec, false); |
be7b0c9e | 667 | } |
ecfd7a9c WN |
668 | return fd; |
669 | } | |
670 | ||
f33cbe72 ACM |
671 | static volatile int workload_exec_errno; |
672 | ||
673 | /* | |
674 | * perf_evlist__prepare_workload will send a SIGUSR1 | |
675 | * if the fork fails, since we asked by setting its | |
676 | * want_signal to true. | |
677 | */ | |
45604710 NK |
678 | static void workload_exec_failed_signal(int signo __maybe_unused, |
679 | siginfo_t *info, | |
f33cbe72 ACM |
680 | void *ucontext __maybe_unused) |
681 | { | |
682 | workload_exec_errno = info->si_value.sival_int; | |
683 | done = 1; | |
f33cbe72 ACM |
684 | child_finished = 1; |
685 | } | |
686 | ||
2dd6d8a1 | 687 | static void snapshot_sig_handler(int sig); |
bfacbe3b | 688 | static void alarm_sig_handler(int sig); |
2dd6d8a1 | 689 | |
46bc29b9 AH |
690 | int __weak |
691 | perf_event__synth_time_conv(const struct perf_event_mmap_page *pc __maybe_unused, | |
692 | struct perf_tool *tool __maybe_unused, | |
693 | perf_event__handler_t process __maybe_unused, | |
694 | struct machine *machine __maybe_unused) | |
695 | { | |
696 | return 0; | |
697 | } | |
698 | ||
ee667f94 WN |
699 | static const struct perf_event_mmap_page * |
700 | perf_evlist__pick_pc(struct perf_evlist *evlist) | |
701 | { | |
b2cb615d WN |
702 | if (evlist) { |
703 | if (evlist->mmap && evlist->mmap[0].base) | |
704 | return evlist->mmap[0].base; | |
0b72d69a WN |
705 | if (evlist->overwrite_mmap && evlist->overwrite_mmap[0].base) |
706 | return evlist->overwrite_mmap[0].base; | |
b2cb615d | 707 | } |
ee667f94 WN |
708 | return NULL; |
709 | } | |
710 | ||
c45628b0 WN |
711 | static const struct perf_event_mmap_page *record__pick_pc(struct record *rec) |
712 | { | |
ee667f94 WN |
713 | const struct perf_event_mmap_page *pc; |
714 | ||
715 | pc = perf_evlist__pick_pc(rec->evlist); | |
716 | if (pc) | |
717 | return pc; | |
c45628b0 WN |
718 | return NULL; |
719 | } | |
720 | ||
4ea648ae | 721 | static int record__synthesize(struct record *rec, bool tail) |
c45c86eb WN |
722 | { |
723 | struct perf_session *session = rec->session; | |
724 | struct machine *machine = &session->machines.host; | |
8ceb41d7 | 725 | struct perf_data *data = &rec->data; |
c45c86eb WN |
726 | struct record_opts *opts = &rec->opts; |
727 | struct perf_tool *tool = &rec->tool; | |
8ceb41d7 | 728 | int fd = perf_data__fd(data); |
c45c86eb WN |
729 | int err = 0; |
730 | ||
4ea648ae WN |
731 | if (rec->opts.tail_synthesize != tail) |
732 | return 0; | |
733 | ||
8ceb41d7 | 734 | if (data->is_pipe) { |
e9def1b2 DCC |
735 | err = perf_event__synthesize_features( |
736 | tool, session, rec->evlist, process_synthesized_event); | |
737 | if (err < 0) { | |
738 | pr_err("Couldn't synthesize features.\n"); | |
739 | return err; | |
740 | } | |
741 | ||
c45c86eb WN |
742 | err = perf_event__synthesize_attrs(tool, session, |
743 | process_synthesized_event); | |
744 | if (err < 0) { | |
745 | pr_err("Couldn't synthesize attrs.\n"); | |
746 | goto out; | |
747 | } | |
748 | ||
749 | if (have_tracepoints(&rec->evlist->entries)) { | |
750 | /* | |
751 | * FIXME err <= 0 here actually means that | |
752 | * there were no tracepoints so its not really | |
753 | * an error, just that we don't need to | |
754 | * synthesize anything. We really have to | |
755 | * return this more properly and also | |
756 | * propagate errors that now are calling die() | |
757 | */ | |
758 | err = perf_event__synthesize_tracing_data(tool, fd, rec->evlist, | |
759 | process_synthesized_event); | |
760 | if (err <= 0) { | |
761 | pr_err("Couldn't record tracing data.\n"); | |
762 | goto out; | |
763 | } | |
764 | rec->bytes_written += err; | |
765 | } | |
766 | } | |
767 | ||
c45628b0 | 768 | err = perf_event__synth_time_conv(record__pick_pc(rec), tool, |
46bc29b9 AH |
769 | process_synthesized_event, machine); |
770 | if (err) | |
771 | goto out; | |
772 | ||
c45c86eb WN |
773 | if (rec->opts.full_auxtrace) { |
774 | err = perf_event__synthesize_auxtrace_info(rec->itr, tool, | |
775 | session, process_synthesized_event); | |
776 | if (err) | |
777 | goto out; | |
778 | } | |
779 | ||
6c443954 ACM |
780 | if (!perf_evlist__exclude_kernel(rec->evlist)) { |
781 | err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event, | |
782 | machine); | |
783 | WARN_ONCE(err < 0, "Couldn't record kernel reference relocation symbol\n" | |
784 | "Symbol resolution may be skewed if relocation was used (e.g. kexec).\n" | |
785 | "Check /proc/kallsyms permission or run as root.\n"); | |
786 | ||
787 | err = perf_event__synthesize_modules(tool, process_synthesized_event, | |
788 | machine); | |
789 | WARN_ONCE(err < 0, "Couldn't record kernel module information.\n" | |
790 | "Symbol resolution may be skewed if relocation was used (e.g. kexec).\n" | |
791 | "Check /proc/modules permission or run as root.\n"); | |
792 | } | |
c45c86eb WN |
793 | |
794 | if (perf_guest) { | |
795 | machines__process_guests(&session->machines, | |
796 | perf_event__synthesize_guest_os, tool); | |
797 | } | |
798 | ||
bfd8f72c AK |
799 | err = perf_event__synthesize_extra_attr(&rec->tool, |
800 | rec->evlist, | |
801 | process_synthesized_event, | |
802 | data->is_pipe); | |
803 | if (err) | |
804 | goto out; | |
805 | ||
373565d2 AK |
806 | err = perf_event__synthesize_thread_map2(&rec->tool, rec->evlist->threads, |
807 | process_synthesized_event, | |
808 | NULL); | |
809 | if (err < 0) { | |
810 | pr_err("Couldn't synthesize thread map.\n"); | |
811 | return err; | |
812 | } | |
813 | ||
814 | err = perf_event__synthesize_cpu_map(&rec->tool, rec->evlist->cpus, | |
815 | process_synthesized_event, NULL); | |
816 | if (err < 0) { | |
817 | pr_err("Couldn't synthesize cpu map.\n"); | |
818 | return err; | |
819 | } | |
820 | ||
c45c86eb WN |
821 | err = __machine__synthesize_threads(machine, tool, &opts->target, rec->evlist->threads, |
822 | process_synthesized_event, opts->sample_address, | |
340b47f5 | 823 | opts->proc_map_timeout, 1); |
c45c86eb WN |
824 | out: |
825 | return err; | |
826 | } | |
827 | ||
8c6f45a7 | 828 | static int __cmd_record(struct record *rec, int argc, const char **argv) |
16c8a109 | 829 | { |
57706abc | 830 | int err; |
45604710 | 831 | int status = 0; |
8b412664 | 832 | unsigned long waking = 0; |
46be604b | 833 | const bool forks = argc > 0; |
23346f21 | 834 | struct machine *machine; |
45694aa7 | 835 | struct perf_tool *tool = &rec->tool; |
b4006796 | 836 | struct record_opts *opts = &rec->opts; |
8ceb41d7 | 837 | struct perf_data *data = &rec->data; |
d20deb64 | 838 | struct perf_session *session; |
6dcf45ef | 839 | bool disabled = false, draining = false; |
42aa276f | 840 | int fd; |
de9ac07b | 841 | |
d20deb64 | 842 | rec->progname = argv[0]; |
33e49ea7 | 843 | |
45604710 | 844 | atexit(record__sig_exit); |
f5970550 PZ |
845 | signal(SIGCHLD, sig_handler); |
846 | signal(SIGINT, sig_handler); | |
804f7ac7 | 847 | signal(SIGTERM, sig_handler); |
a074865e | 848 | signal(SIGSEGV, sigsegv_handler); |
c0bdc1c4 | 849 | |
f3b3614a HB |
850 | if (rec->opts.record_namespaces) |
851 | tool->namespace_events = true; | |
852 | ||
dc0c6127 | 853 | if (rec->opts.auxtrace_snapshot_mode || rec->switch_output.enabled) { |
2dd6d8a1 | 854 | signal(SIGUSR2, snapshot_sig_handler); |
3c1cb7e3 WN |
855 | if (rec->opts.auxtrace_snapshot_mode) |
856 | trigger_on(&auxtrace_snapshot_trigger); | |
dc0c6127 | 857 | if (rec->switch_output.enabled) |
3c1cb7e3 | 858 | trigger_on(&switch_output_trigger); |
c0bdc1c4 | 859 | } else { |
2dd6d8a1 | 860 | signal(SIGUSR2, SIG_IGN); |
c0bdc1c4 | 861 | } |
f5970550 | 862 | |
8ceb41d7 | 863 | session = perf_session__new(data, false, tool); |
94c744b6 | 864 | if (session == NULL) { |
ffa91880 | 865 | pr_err("Perf session creation failed.\n"); |
a9a70bbc ACM |
866 | return -1; |
867 | } | |
868 | ||
8ceb41d7 | 869 | fd = perf_data__fd(data); |
d20deb64 ACM |
870 | rec->session = session; |
871 | ||
8c6f45a7 | 872 | record__init_features(rec); |
330aa675 | 873 | |
d4db3f16 | 874 | if (forks) { |
3e2be2da | 875 | err = perf_evlist__prepare_workload(rec->evlist, &opts->target, |
8ceb41d7 | 876 | argv, data->is_pipe, |
735f7e0b | 877 | workload_exec_failed_signal); |
35b9d88e ACM |
878 | if (err < 0) { |
879 | pr_err("Couldn't run the workload!\n"); | |
45604710 | 880 | status = err; |
35b9d88e | 881 | goto out_delete_session; |
856e9660 | 882 | } |
856e9660 PZ |
883 | } |
884 | ||
8c6f45a7 | 885 | if (record__open(rec) != 0) { |
8d3eca20 | 886 | err = -1; |
45604710 | 887 | goto out_child; |
8d3eca20 | 888 | } |
de9ac07b | 889 | |
8690a2a7 WN |
890 | err = bpf__apply_obj_config(); |
891 | if (err) { | |
892 | char errbuf[BUFSIZ]; | |
893 | ||
894 | bpf__strerror_apply_obj_config(err, errbuf, sizeof(errbuf)); | |
895 | pr_err("ERROR: Apply config to BPF failed: %s\n", | |
896 | errbuf); | |
897 | goto out_child; | |
898 | } | |
899 | ||
cca8482c AH |
900 | /* |
901 | * Normally perf_session__new would do this, but it doesn't have the | |
902 | * evlist. | |
903 | */ | |
904 | if (rec->tool.ordered_events && !perf_evlist__sample_id_all(rec->evlist)) { | |
905 | pr_warning("WARNING: No sample_id_all support, falling back to unordered processing\n"); | |
906 | rec->tool.ordered_events = false; | |
907 | } | |
908 | ||
3e2be2da | 909 | if (!rec->evlist->nr_groups) |
a8bb559b NK |
910 | perf_header__clear_feat(&session->header, HEADER_GROUP_DESC); |
911 | ||
8ceb41d7 | 912 | if (data->is_pipe) { |
42aa276f | 913 | err = perf_header__write_pipe(fd); |
529870e3 | 914 | if (err < 0) |
45604710 | 915 | goto out_child; |
563aecb2 | 916 | } else { |
42aa276f | 917 | err = perf_session__write_header(session, rec->evlist, fd, false); |
d5eed904 | 918 | if (err < 0) |
45604710 | 919 | goto out_child; |
56b03f3c ACM |
920 | } |
921 | ||
d3665498 | 922 | if (!rec->no_buildid |
e20960c0 | 923 | && !perf_header__has_feat(&session->header, HEADER_BUILD_ID)) { |
d3665498 | 924 | pr_err("Couldn't generate buildids. " |
e20960c0 | 925 | "Use --no-buildid to profile anyway.\n"); |
8d3eca20 | 926 | err = -1; |
45604710 | 927 | goto out_child; |
e20960c0 RR |
928 | } |
929 | ||
34ba5122 | 930 | machine = &session->machines.host; |
743eb868 | 931 | |
4ea648ae | 932 | err = record__synthesize(rec, false); |
c45c86eb | 933 | if (err < 0) |
45604710 | 934 | goto out_child; |
8d3eca20 | 935 | |
d20deb64 | 936 | if (rec->realtime_prio) { |
de9ac07b PZ |
937 | struct sched_param param; |
938 | ||
d20deb64 | 939 | param.sched_priority = rec->realtime_prio; |
de9ac07b | 940 | if (sched_setscheduler(0, SCHED_FIFO, ¶m)) { |
6beba7ad | 941 | pr_err("Could not set realtime priority.\n"); |
8d3eca20 | 942 | err = -1; |
45604710 | 943 | goto out_child; |
de9ac07b PZ |
944 | } |
945 | } | |
946 | ||
774cb499 JO |
947 | /* |
948 | * When perf is starting the traced process, all the events | |
949 | * (apart from group members) have enable_on_exec=1 set, | |
950 | * so don't spoil it by prematurely enabling them. | |
951 | */ | |
6619a53e | 952 | if (!target__none(&opts->target) && !opts->initial_delay) |
3e2be2da | 953 | perf_evlist__enable(rec->evlist); |
764e16a3 | 954 | |
856e9660 PZ |
955 | /* |
956 | * Let the child rip | |
957 | */ | |
e803cf97 | 958 | if (forks) { |
e5bed564 | 959 | union perf_event *event; |
e907caf3 | 960 | pid_t tgid; |
e5bed564 NK |
961 | |
962 | event = malloc(sizeof(event->comm) + machine->id_hdr_size); | |
963 | if (event == NULL) { | |
964 | err = -ENOMEM; | |
965 | goto out_child; | |
966 | } | |
967 | ||
e803cf97 NK |
968 | /* |
969 | * Some H/W events are generated before COMM event | |
970 | * which is emitted during exec(), so perf script | |
971 | * cannot see a correct process name for those events. | |
972 | * Synthesize COMM event to prevent it. | |
973 | */ | |
e907caf3 HB |
974 | tgid = perf_event__synthesize_comm(tool, event, |
975 | rec->evlist->workload.pid, | |
976 | process_synthesized_event, | |
977 | machine); | |
978 | free(event); | |
979 | ||
980 | if (tgid == -1) | |
981 | goto out_child; | |
982 | ||
983 | event = malloc(sizeof(event->namespaces) + | |
984 | (NR_NAMESPACES * sizeof(struct perf_ns_link_info)) + | |
985 | machine->id_hdr_size); | |
986 | if (event == NULL) { | |
987 | err = -ENOMEM; | |
988 | goto out_child; | |
989 | } | |
990 | ||
991 | /* | |
992 | * Synthesize NAMESPACES event for the command specified. | |
993 | */ | |
994 | perf_event__synthesize_namespaces(tool, event, | |
995 | rec->evlist->workload.pid, | |
996 | tgid, process_synthesized_event, | |
997 | machine); | |
e5bed564 | 998 | free(event); |
e803cf97 | 999 | |
3e2be2da | 1000 | perf_evlist__start_workload(rec->evlist); |
e803cf97 | 1001 | } |
856e9660 | 1002 | |
6619a53e | 1003 | if (opts->initial_delay) { |
0693e680 | 1004 | usleep(opts->initial_delay * USEC_PER_MSEC); |
6619a53e AK |
1005 | perf_evlist__enable(rec->evlist); |
1006 | } | |
1007 | ||
5f9cf599 | 1008 | trigger_ready(&auxtrace_snapshot_trigger); |
3c1cb7e3 | 1009 | trigger_ready(&switch_output_trigger); |
a074865e | 1010 | perf_hooks__invoke_record_start(); |
649c48a9 | 1011 | for (;;) { |
9f065194 | 1012 | unsigned long long hits = rec->samples; |
de9ac07b | 1013 | |
05737464 WN |
1014 | /* |
1015 | * rec->evlist->bkw_mmap_state is possible to be | |
1016 | * BKW_MMAP_EMPTY here: when done == true and | |
1017 | * hits != rec->samples in previous round. | |
1018 | * | |
1019 | * perf_evlist__toggle_bkw_mmap ensure we never | |
1020 | * convert BKW_MMAP_EMPTY to BKW_MMAP_DATA_PENDING. | |
1021 | */ | |
1022 | if (trigger_is_hit(&switch_output_trigger) || done || draining) | |
1023 | perf_evlist__toggle_bkw_mmap(rec->evlist, BKW_MMAP_DATA_PENDING); | |
1024 | ||
8c6f45a7 | 1025 | if (record__mmap_read_all(rec) < 0) { |
5f9cf599 | 1026 | trigger_error(&auxtrace_snapshot_trigger); |
3c1cb7e3 | 1027 | trigger_error(&switch_output_trigger); |
8d3eca20 | 1028 | err = -1; |
45604710 | 1029 | goto out_child; |
8d3eca20 | 1030 | } |
de9ac07b | 1031 | |
2dd6d8a1 AH |
1032 | if (auxtrace_record__snapshot_started) { |
1033 | auxtrace_record__snapshot_started = 0; | |
5f9cf599 | 1034 | if (!trigger_is_error(&auxtrace_snapshot_trigger)) |
2dd6d8a1 | 1035 | record__read_auxtrace_snapshot(rec); |
5f9cf599 | 1036 | if (trigger_is_error(&auxtrace_snapshot_trigger)) { |
2dd6d8a1 AH |
1037 | pr_err("AUX area tracing snapshot failed\n"); |
1038 | err = -1; | |
1039 | goto out_child; | |
1040 | } | |
1041 | } | |
1042 | ||
3c1cb7e3 | 1043 | if (trigger_is_hit(&switch_output_trigger)) { |
05737464 WN |
1044 | /* |
1045 | * If switch_output_trigger is hit, the data in | |
1046 | * overwritable ring buffer should have been collected, | |
1047 | * so bkw_mmap_state should be set to BKW_MMAP_EMPTY. | |
1048 | * | |
1049 | * If SIGUSR2 raise after or during record__mmap_read_all(), | |
1050 | * record__mmap_read_all() didn't collect data from | |
1051 | * overwritable ring buffer. Read again. | |
1052 | */ | |
1053 | if (rec->evlist->bkw_mmap_state == BKW_MMAP_RUNNING) | |
1054 | continue; | |
3c1cb7e3 WN |
1055 | trigger_ready(&switch_output_trigger); |
1056 | ||
05737464 WN |
1057 | /* |
1058 | * Reenable events in overwrite ring buffer after | |
1059 | * record__mmap_read_all(): we should have collected | |
1060 | * data from it. | |
1061 | */ | |
1062 | perf_evlist__toggle_bkw_mmap(rec->evlist, BKW_MMAP_RUNNING); | |
1063 | ||
3c1cb7e3 WN |
1064 | if (!quiet) |
1065 | fprintf(stderr, "[ perf record: dump data: Woken up %ld times ]\n", | |
1066 | waking); | |
1067 | waking = 0; | |
1068 | fd = record__switch_output(rec, false); | |
1069 | if (fd < 0) { | |
1070 | pr_err("Failed to switch to new file\n"); | |
1071 | trigger_error(&switch_output_trigger); | |
1072 | err = fd; | |
1073 | goto out_child; | |
1074 | } | |
bfacbe3b JO |
1075 | |
1076 | /* re-arm the alarm */ | |
1077 | if (rec->switch_output.time) | |
1078 | alarm(rec->switch_output.time); | |
3c1cb7e3 WN |
1079 | } |
1080 | ||
d20deb64 | 1081 | if (hits == rec->samples) { |
6dcf45ef | 1082 | if (done || draining) |
649c48a9 | 1083 | break; |
f66a889d | 1084 | err = perf_evlist__poll(rec->evlist, -1); |
a515114f JO |
1085 | /* |
1086 | * Propagate error, only if there's any. Ignore positive | |
1087 | * number of returned events and interrupt error. | |
1088 | */ | |
1089 | if (err > 0 || (err < 0 && errno == EINTR)) | |
45604710 | 1090 | err = 0; |
8b412664 | 1091 | waking++; |
6dcf45ef ACM |
1092 | |
1093 | if (perf_evlist__filter_pollfd(rec->evlist, POLLERR | POLLHUP) == 0) | |
1094 | draining = true; | |
8b412664 PZ |
1095 | } |
1096 | ||
774cb499 JO |
1097 | /* |
1098 | * When perf is starting the traced process, at the end events | |
1099 | * die with the process and we wait for that. Thus no need to | |
1100 | * disable events in this case. | |
1101 | */ | |
602ad878 | 1102 | if (done && !disabled && !target__none(&opts->target)) { |
5f9cf599 | 1103 | trigger_off(&auxtrace_snapshot_trigger); |
3e2be2da | 1104 | perf_evlist__disable(rec->evlist); |
2711926a JO |
1105 | disabled = true; |
1106 | } | |
de9ac07b | 1107 | } |
5f9cf599 | 1108 | trigger_off(&auxtrace_snapshot_trigger); |
3c1cb7e3 | 1109 | trigger_off(&switch_output_trigger); |
de9ac07b | 1110 | |
f33cbe72 | 1111 | if (forks && workload_exec_errno) { |
35550da3 | 1112 | char msg[STRERR_BUFSIZE]; |
c8b5f2c9 | 1113 | const char *emsg = str_error_r(workload_exec_errno, msg, sizeof(msg)); |
f33cbe72 ACM |
1114 | pr_err("Workload failed: %s\n", emsg); |
1115 | err = -1; | |
45604710 | 1116 | goto out_child; |
f33cbe72 ACM |
1117 | } |
1118 | ||
e3d59112 | 1119 | if (!quiet) |
45604710 | 1120 | fprintf(stderr, "[ perf record: Woken up %ld times to write data ]\n", waking); |
b44308f5 | 1121 | |
4ea648ae WN |
1122 | if (target__none(&rec->opts.target)) |
1123 | record__synthesize_workload(rec, true); | |
1124 | ||
45604710 NK |
1125 | out_child: |
1126 | if (forks) { | |
1127 | int exit_status; | |
addc2785 | 1128 | |
45604710 NK |
1129 | if (!child_finished) |
1130 | kill(rec->evlist->workload.pid, SIGTERM); | |
1131 | ||
1132 | wait(&exit_status); | |
1133 | ||
1134 | if (err < 0) | |
1135 | status = err; | |
1136 | else if (WIFEXITED(exit_status)) | |
1137 | status = WEXITSTATUS(exit_status); | |
1138 | else if (WIFSIGNALED(exit_status)) | |
1139 | signr = WTERMSIG(exit_status); | |
1140 | } else | |
1141 | status = err; | |
1142 | ||
4ea648ae | 1143 | record__synthesize(rec, true); |
e3d59112 NK |
1144 | /* this will be recalculated during process_buildids() */ |
1145 | rec->samples = 0; | |
1146 | ||
ecfd7a9c WN |
1147 | if (!err) { |
1148 | if (!rec->timestamp_filename) { | |
1149 | record__finish_output(rec); | |
1150 | } else { | |
1151 | fd = record__switch_output(rec, true); | |
1152 | if (fd < 0) { | |
1153 | status = fd; | |
1154 | goto out_delete_session; | |
1155 | } | |
1156 | } | |
1157 | } | |
39d17dac | 1158 | |
a074865e WN |
1159 | perf_hooks__invoke_record_end(); |
1160 | ||
e3d59112 NK |
1161 | if (!err && !quiet) { |
1162 | char samples[128]; | |
ecfd7a9c WN |
1163 | const char *postfix = rec->timestamp_filename ? |
1164 | ".<timestamp>" : ""; | |
e3d59112 | 1165 | |
ef149c25 | 1166 | if (rec->samples && !rec->opts.full_auxtrace) |
e3d59112 NK |
1167 | scnprintf(samples, sizeof(samples), |
1168 | " (%" PRIu64 " samples)", rec->samples); | |
1169 | else | |
1170 | samples[0] = '\0'; | |
1171 | ||
ecfd7a9c | 1172 | fprintf(stderr, "[ perf record: Captured and wrote %.3f MB %s%s%s ]\n", |
8ceb41d7 | 1173 | perf_data__size(data) / 1024.0 / 1024.0, |
eae8ad80 | 1174 | data->file.path, postfix, samples); |
e3d59112 NK |
1175 | } |
1176 | ||
39d17dac ACM |
1177 | out_delete_session: |
1178 | perf_session__delete(session); | |
45604710 | 1179 | return status; |
de9ac07b | 1180 | } |
0e9b20b8 | 1181 | |
0883e820 | 1182 | static void callchain_debug(struct callchain_param *callchain) |
09b0fd45 | 1183 | { |
aad2b21c | 1184 | static const char *str[CALLCHAIN_MAX] = { "NONE", "FP", "DWARF", "LBR" }; |
a601fdff | 1185 | |
0883e820 | 1186 | pr_debug("callchain: type %s\n", str[callchain->record_mode]); |
26d33022 | 1187 | |
0883e820 | 1188 | if (callchain->record_mode == CALLCHAIN_DWARF) |
09b0fd45 | 1189 | pr_debug("callchain: stack dump size %d\n", |
0883e820 | 1190 | callchain->dump_size); |
09b0fd45 JO |
1191 | } |
1192 | ||
0883e820 ACM |
1193 | int record_opts__parse_callchain(struct record_opts *record, |
1194 | struct callchain_param *callchain, | |
1195 | const char *arg, bool unset) | |
09b0fd45 | 1196 | { |
09b0fd45 | 1197 | int ret; |
0883e820 | 1198 | callchain->enabled = !unset; |
eb853e80 | 1199 | |
09b0fd45 JO |
1200 | /* --no-call-graph */ |
1201 | if (unset) { | |
0883e820 | 1202 | callchain->record_mode = CALLCHAIN_NONE; |
09b0fd45 JO |
1203 | pr_debug("callchain: disabled\n"); |
1204 | return 0; | |
1205 | } | |
1206 | ||
0883e820 | 1207 | ret = parse_callchain_record_opt(arg, callchain); |
5c0cf224 JO |
1208 | if (!ret) { |
1209 | /* Enable data address sampling for DWARF unwind. */ | |
0883e820 | 1210 | if (callchain->record_mode == CALLCHAIN_DWARF) |
5c0cf224 | 1211 | record->sample_address = true; |
0883e820 | 1212 | callchain_debug(callchain); |
5c0cf224 | 1213 | } |
26d33022 JO |
1214 | |
1215 | return ret; | |
1216 | } | |
1217 | ||
0883e820 ACM |
1218 | int record_parse_callchain_opt(const struct option *opt, |
1219 | const char *arg, | |
1220 | int unset) | |
1221 | { | |
1222 | return record_opts__parse_callchain(opt->value, &callchain_param, arg, unset); | |
1223 | } | |
1224 | ||
c421e80b | 1225 | int record_callchain_opt(const struct option *opt, |
09b0fd45 JO |
1226 | const char *arg __maybe_unused, |
1227 | int unset __maybe_unused) | |
1228 | { | |
2ddd5c04 | 1229 | struct callchain_param *callchain = opt->value; |
c421e80b | 1230 | |
2ddd5c04 | 1231 | callchain->enabled = true; |
09b0fd45 | 1232 | |
2ddd5c04 ACM |
1233 | if (callchain->record_mode == CALLCHAIN_NONE) |
1234 | callchain->record_mode = CALLCHAIN_FP; | |
eb853e80 | 1235 | |
2ddd5c04 | 1236 | callchain_debug(callchain); |
09b0fd45 JO |
1237 | return 0; |
1238 | } | |
1239 | ||
eb853e80 JO |
1240 | static int perf_record_config(const char *var, const char *value, void *cb) |
1241 | { | |
7a29c087 NK |
1242 | struct record *rec = cb; |
1243 | ||
1244 | if (!strcmp(var, "record.build-id")) { | |
1245 | if (!strcmp(value, "cache")) | |
1246 | rec->no_buildid_cache = false; | |
1247 | else if (!strcmp(value, "no-cache")) | |
1248 | rec->no_buildid_cache = true; | |
1249 | else if (!strcmp(value, "skip")) | |
1250 | rec->no_buildid = true; | |
1251 | else | |
1252 | return -1; | |
1253 | return 0; | |
1254 | } | |
eb853e80 | 1255 | if (!strcmp(var, "record.call-graph")) |
5a2e5e85 | 1256 | var = "call-graph.record-mode"; /* fall-through */ |
eb853e80 JO |
1257 | |
1258 | return perf_default_config(var, value, cb); | |
1259 | } | |
1260 | ||
814c8c38 PZ |
1261 | struct clockid_map { |
1262 | const char *name; | |
1263 | int clockid; | |
1264 | }; | |
1265 | ||
1266 | #define CLOCKID_MAP(n, c) \ | |
1267 | { .name = n, .clockid = (c), } | |
1268 | ||
1269 | #define CLOCKID_END { .name = NULL, } | |
1270 | ||
1271 | ||
1272 | /* | |
1273 | * Add the missing ones, we need to build on many distros... | |
1274 | */ | |
1275 | #ifndef CLOCK_MONOTONIC_RAW | |
1276 | #define CLOCK_MONOTONIC_RAW 4 | |
1277 | #endif | |
1278 | #ifndef CLOCK_BOOTTIME | |
1279 | #define CLOCK_BOOTTIME 7 | |
1280 | #endif | |
1281 | #ifndef CLOCK_TAI | |
1282 | #define CLOCK_TAI 11 | |
1283 | #endif | |
1284 | ||
1285 | static const struct clockid_map clockids[] = { | |
1286 | /* available for all events, NMI safe */ | |
1287 | CLOCKID_MAP("monotonic", CLOCK_MONOTONIC), | |
1288 | CLOCKID_MAP("monotonic_raw", CLOCK_MONOTONIC_RAW), | |
1289 | ||
1290 | /* available for some events */ | |
1291 | CLOCKID_MAP("realtime", CLOCK_REALTIME), | |
1292 | CLOCKID_MAP("boottime", CLOCK_BOOTTIME), | |
1293 | CLOCKID_MAP("tai", CLOCK_TAI), | |
1294 | ||
1295 | /* available for the lazy */ | |
1296 | CLOCKID_MAP("mono", CLOCK_MONOTONIC), | |
1297 | CLOCKID_MAP("raw", CLOCK_MONOTONIC_RAW), | |
1298 | CLOCKID_MAP("real", CLOCK_REALTIME), | |
1299 | CLOCKID_MAP("boot", CLOCK_BOOTTIME), | |
1300 | ||
1301 | CLOCKID_END, | |
1302 | }; | |
1303 | ||
1304 | static int parse_clockid(const struct option *opt, const char *str, int unset) | |
1305 | { | |
1306 | struct record_opts *opts = (struct record_opts *)opt->value; | |
1307 | const struct clockid_map *cm; | |
1308 | const char *ostr = str; | |
1309 | ||
1310 | if (unset) { | |
1311 | opts->use_clockid = 0; | |
1312 | return 0; | |
1313 | } | |
1314 | ||
1315 | /* no arg passed */ | |
1316 | if (!str) | |
1317 | return 0; | |
1318 | ||
1319 | /* no setting it twice */ | |
1320 | if (opts->use_clockid) | |
1321 | return -1; | |
1322 | ||
1323 | opts->use_clockid = true; | |
1324 | ||
1325 | /* if its a number, we're done */ | |
1326 | if (sscanf(str, "%d", &opts->clockid) == 1) | |
1327 | return 0; | |
1328 | ||
1329 | /* allow a "CLOCK_" prefix to the name */ | |
1330 | if (!strncasecmp(str, "CLOCK_", 6)) | |
1331 | str += 6; | |
1332 | ||
1333 | for (cm = clockids; cm->name; cm++) { | |
1334 | if (!strcasecmp(str, cm->name)) { | |
1335 | opts->clockid = cm->clockid; | |
1336 | return 0; | |
1337 | } | |
1338 | } | |
1339 | ||
1340 | opts->use_clockid = false; | |
1341 | ui__warning("unknown clockid %s, check man page\n", ostr); | |
1342 | return -1; | |
1343 | } | |
1344 | ||
e9db1310 AH |
1345 | static int record__parse_mmap_pages(const struct option *opt, |
1346 | const char *str, | |
1347 | int unset __maybe_unused) | |
1348 | { | |
1349 | struct record_opts *opts = opt->value; | |
1350 | char *s, *p; | |
1351 | unsigned int mmap_pages; | |
1352 | int ret; | |
1353 | ||
1354 | if (!str) | |
1355 | return -EINVAL; | |
1356 | ||
1357 | s = strdup(str); | |
1358 | if (!s) | |
1359 | return -ENOMEM; | |
1360 | ||
1361 | p = strchr(s, ','); | |
1362 | if (p) | |
1363 | *p = '\0'; | |
1364 | ||
1365 | if (*s) { | |
1366 | ret = __perf_evlist__parse_mmap_pages(&mmap_pages, s); | |
1367 | if (ret) | |
1368 | goto out_free; | |
1369 | opts->mmap_pages = mmap_pages; | |
1370 | } | |
1371 | ||
1372 | if (!p) { | |
1373 | ret = 0; | |
1374 | goto out_free; | |
1375 | } | |
1376 | ||
1377 | ret = __perf_evlist__parse_mmap_pages(&mmap_pages, p + 1); | |
1378 | if (ret) | |
1379 | goto out_free; | |
1380 | ||
1381 | opts->auxtrace_mmap_pages = mmap_pages; | |
1382 | ||
1383 | out_free: | |
1384 | free(s); | |
1385 | return ret; | |
1386 | } | |
1387 | ||
0c582449 JO |
1388 | static void switch_output_size_warn(struct record *rec) |
1389 | { | |
1390 | u64 wakeup_size = perf_evlist__mmap_size(rec->opts.mmap_pages); | |
1391 | struct switch_output *s = &rec->switch_output; | |
1392 | ||
1393 | wakeup_size /= 2; | |
1394 | ||
1395 | if (s->size < wakeup_size) { | |
1396 | char buf[100]; | |
1397 | ||
1398 | unit_number__scnprintf(buf, sizeof(buf), wakeup_size); | |
1399 | pr_warning("WARNING: switch-output data size lower than " | |
1400 | "wakeup kernel buffer size (%s) " | |
1401 | "expect bigger perf.data sizes\n", buf); | |
1402 | } | |
1403 | } | |
1404 | ||
cb4e1ebb JO |
1405 | static int switch_output_setup(struct record *rec) |
1406 | { | |
1407 | struct switch_output *s = &rec->switch_output; | |
dc0c6127 JO |
1408 | static struct parse_tag tags_size[] = { |
1409 | { .tag = 'B', .mult = 1 }, | |
1410 | { .tag = 'K', .mult = 1 << 10 }, | |
1411 | { .tag = 'M', .mult = 1 << 20 }, | |
1412 | { .tag = 'G', .mult = 1 << 30 }, | |
1413 | { .tag = 0 }, | |
1414 | }; | |
bfacbe3b JO |
1415 | static struct parse_tag tags_time[] = { |
1416 | { .tag = 's', .mult = 1 }, | |
1417 | { .tag = 'm', .mult = 60 }, | |
1418 | { .tag = 'h', .mult = 60*60 }, | |
1419 | { .tag = 'd', .mult = 60*60*24 }, | |
1420 | { .tag = 0 }, | |
1421 | }; | |
dc0c6127 | 1422 | unsigned long val; |
cb4e1ebb JO |
1423 | |
1424 | if (!s->set) | |
1425 | return 0; | |
1426 | ||
1427 | if (!strcmp(s->str, "signal")) { | |
1428 | s->signal = true; | |
1429 | pr_debug("switch-output with SIGUSR2 signal\n"); | |
dc0c6127 JO |
1430 | goto enabled; |
1431 | } | |
1432 | ||
1433 | val = parse_tag_value(s->str, tags_size); | |
1434 | if (val != (unsigned long) -1) { | |
1435 | s->size = val; | |
1436 | pr_debug("switch-output with %s size threshold\n", s->str); | |
1437 | goto enabled; | |
cb4e1ebb JO |
1438 | } |
1439 | ||
bfacbe3b JO |
1440 | val = parse_tag_value(s->str, tags_time); |
1441 | if (val != (unsigned long) -1) { | |
1442 | s->time = val; | |
1443 | pr_debug("switch-output with %s time threshold (%lu seconds)\n", | |
1444 | s->str, s->time); | |
1445 | goto enabled; | |
1446 | } | |
1447 | ||
cb4e1ebb | 1448 | return -1; |
dc0c6127 JO |
1449 | |
1450 | enabled: | |
1451 | rec->timestamp_filename = true; | |
1452 | s->enabled = true; | |
0c582449 JO |
1453 | |
1454 | if (s->size && !rec->opts.no_buffering) | |
1455 | switch_output_size_warn(rec); | |
1456 | ||
dc0c6127 | 1457 | return 0; |
cb4e1ebb JO |
1458 | } |
1459 | ||
e5b2c207 | 1460 | static const char * const __record_usage[] = { |
9e096753 MG |
1461 | "perf record [<options>] [<command>]", |
1462 | "perf record [<options>] -- <command> [<options>]", | |
0e9b20b8 IM |
1463 | NULL |
1464 | }; | |
e5b2c207 | 1465 | const char * const *record_usage = __record_usage; |
0e9b20b8 | 1466 | |
d20deb64 | 1467 | /* |
8c6f45a7 ACM |
1468 | * XXX Ideally would be local to cmd_record() and passed to a record__new |
1469 | * because we need to have access to it in record__exit, that is called | |
d20deb64 ACM |
1470 | * after cmd_record() exits, but since record_options need to be accessible to |
1471 | * builtin-script, leave it here. | |
1472 | * | |
1473 | * At least we don't ouch it in all the other functions here directly. | |
1474 | * | |
1475 | * Just say no to tons of global variables, sigh. | |
1476 | */ | |
8c6f45a7 | 1477 | static struct record record = { |
d20deb64 | 1478 | .opts = { |
8affc2b8 | 1479 | .sample_time = true, |
d20deb64 ACM |
1480 | .mmap_pages = UINT_MAX, |
1481 | .user_freq = UINT_MAX, | |
1482 | .user_interval = ULLONG_MAX, | |
447a6013 | 1483 | .freq = 4000, |
d1cb9fce NK |
1484 | .target = { |
1485 | .uses_mmap = true, | |
3aa5939d | 1486 | .default_per_cpu = true, |
d1cb9fce | 1487 | }, |
9d9cad76 | 1488 | .proc_map_timeout = 500, |
d20deb64 | 1489 | }, |
e3d59112 NK |
1490 | .tool = { |
1491 | .sample = process_sample_event, | |
1492 | .fork = perf_event__process_fork, | |
cca8482c | 1493 | .exit = perf_event__process_exit, |
e3d59112 | 1494 | .comm = perf_event__process_comm, |
f3b3614a | 1495 | .namespaces = perf_event__process_namespaces, |
e3d59112 NK |
1496 | .mmap = perf_event__process_mmap, |
1497 | .mmap2 = perf_event__process_mmap2, | |
cca8482c | 1498 | .ordered_events = true, |
e3d59112 | 1499 | }, |
d20deb64 | 1500 | }; |
7865e817 | 1501 | |
76a26549 NK |
1502 | const char record_callchain_help[] = CALLCHAIN_RECORD_HELP |
1503 | "\n\t\t\t\tDefault: fp"; | |
61eaa3be | 1504 | |
0aab2136 WN |
1505 | static bool dry_run; |
1506 | ||
d20deb64 ACM |
1507 | /* |
1508 | * XXX Will stay a global variable till we fix builtin-script.c to stop messing | |
1509 | * with it and switch to use the library functions in perf_evlist that came | |
b4006796 | 1510 | * from builtin-record.c, i.e. use record_opts, |
d20deb64 ACM |
1511 | * perf_evlist__prepare_workload, etc instead of fork+exec'in 'perf record', |
1512 | * using pipes, etc. | |
1513 | */ | |
efd21307 | 1514 | static struct option __record_options[] = { |
d20deb64 | 1515 | OPT_CALLBACK('e', "event", &record.evlist, "event", |
86847b62 | 1516 | "event selector. use 'perf list' to list available events", |
f120f9d5 | 1517 | parse_events_option), |
d20deb64 | 1518 | OPT_CALLBACK(0, "filter", &record.evlist, "filter", |
c171b552 | 1519 | "event filter", parse_filter), |
4ba1faa1 WN |
1520 | OPT_CALLBACK_NOOPT(0, "exclude-perf", &record.evlist, |
1521 | NULL, "don't record events from perf itself", | |
1522 | exclude_perf), | |
bea03405 | 1523 | OPT_STRING('p', "pid", &record.opts.target.pid, "pid", |
d6d901c2 | 1524 | "record events on existing process id"), |
bea03405 | 1525 | OPT_STRING('t', "tid", &record.opts.target.tid, "tid", |
d6d901c2 | 1526 | "record events on existing thread id"), |
d20deb64 | 1527 | OPT_INTEGER('r', "realtime", &record.realtime_prio, |
0e9b20b8 | 1528 | "collect data with this RT SCHED_FIFO priority"), |
509051ea | 1529 | OPT_BOOLEAN(0, "no-buffering", &record.opts.no_buffering, |
acac03fa | 1530 | "collect data without buffering"), |
d20deb64 | 1531 | OPT_BOOLEAN('R', "raw-samples", &record.opts.raw_samples, |
daac07b2 | 1532 | "collect raw sample records from all opened counters"), |
bea03405 | 1533 | OPT_BOOLEAN('a', "all-cpus", &record.opts.target.system_wide, |
0e9b20b8 | 1534 | "system-wide collection from all CPUs"), |
bea03405 | 1535 | OPT_STRING('C', "cpu", &record.opts.target.cpu_list, "cpu", |
c45c6ea2 | 1536 | "list of cpus to monitor"), |
d20deb64 | 1537 | OPT_U64('c', "count", &record.opts.user_interval, "event period to sample"), |
eae8ad80 | 1538 | OPT_STRING('o', "output", &record.data.file.path, "file", |
abaff32a | 1539 | "output file name"), |
69e7e5b0 AH |
1540 | OPT_BOOLEAN_SET('i', "no-inherit", &record.opts.no_inherit, |
1541 | &record.opts.no_inherit_set, | |
1542 | "child tasks do not inherit counters"), | |
4ea648ae WN |
1543 | OPT_BOOLEAN(0, "tail-synthesize", &record.opts.tail_synthesize, |
1544 | "synthesize non-sample events at the end of output"), | |
626a6b78 | 1545 | OPT_BOOLEAN(0, "overwrite", &record.opts.overwrite, "use overwrite mode"), |
b09c2364 ACM |
1546 | OPT_BOOLEAN(0, "strict-freq", &record.opts.strict_freq, |
1547 | "Fail if the specified frequency can't be used"), | |
67230479 ACM |
1548 | OPT_CALLBACK('F', "freq", &record.opts, "freq or 'max'", |
1549 | "profile at this frequency", | |
1550 | record__parse_freq), | |
e9db1310 AH |
1551 | OPT_CALLBACK('m', "mmap-pages", &record.opts, "pages[,pages]", |
1552 | "number of mmap data pages and AUX area tracing mmap pages", | |
1553 | record__parse_mmap_pages), | |
d20deb64 | 1554 | OPT_BOOLEAN(0, "group", &record.opts.group, |
43bece79 | 1555 | "put the counters into a counter group"), |
2ddd5c04 | 1556 | OPT_CALLBACK_NOOPT('g', NULL, &callchain_param, |
09b0fd45 JO |
1557 | NULL, "enables call-graph recording" , |
1558 | &record_callchain_opt), | |
1559 | OPT_CALLBACK(0, "call-graph", &record.opts, | |
76a26549 | 1560 | "record_mode[,record_size]", record_callchain_help, |
09b0fd45 | 1561 | &record_parse_callchain_opt), |
c0555642 | 1562 | OPT_INCR('v', "verbose", &verbose, |
3da297a6 | 1563 | "be more verbose (show counter open errors, etc)"), |
b44308f5 | 1564 | OPT_BOOLEAN('q', "quiet", &quiet, "don't print any message"), |
d20deb64 | 1565 | OPT_BOOLEAN('s', "stat", &record.opts.inherit_stat, |
649c48a9 | 1566 | "per thread counts"), |
56100321 | 1567 | OPT_BOOLEAN('d', "data", &record.opts.sample_address, "Record the sample addresses"), |
3b0a5daa KL |
1568 | OPT_BOOLEAN(0, "phys-data", &record.opts.sample_phys_addr, |
1569 | "Record the sample physical addresses"), | |
b6f35ed7 | 1570 | OPT_BOOLEAN(0, "sample-cpu", &record.opts.sample_cpu, "Record the sample cpu"), |
3abebc55 AH |
1571 | OPT_BOOLEAN_SET('T', "timestamp", &record.opts.sample_time, |
1572 | &record.opts.sample_time_set, | |
1573 | "Record the sample timestamps"), | |
f290aa1f JO |
1574 | OPT_BOOLEAN_SET('P', "period", &record.opts.period, &record.opts.period_set, |
1575 | "Record the sample period"), | |
d20deb64 | 1576 | OPT_BOOLEAN('n', "no-samples", &record.opts.no_samples, |
649c48a9 | 1577 | "don't sample"), |
d2db9a98 WN |
1578 | OPT_BOOLEAN_SET('N', "no-buildid-cache", &record.no_buildid_cache, |
1579 | &record.no_buildid_cache_set, | |
1580 | "do not update the buildid cache"), | |
1581 | OPT_BOOLEAN_SET('B', "no-buildid", &record.no_buildid, | |
1582 | &record.no_buildid_set, | |
1583 | "do not collect buildids in perf.data"), | |
d20deb64 | 1584 | OPT_CALLBACK('G', "cgroup", &record.evlist, "name", |
023695d9 SE |
1585 | "monitor event in cgroup name only", |
1586 | parse_cgroups), | |
a6205a35 | 1587 | OPT_UINTEGER('D', "delay", &record.opts.initial_delay, |
6619a53e | 1588 | "ms to wait before starting measurement after program start"), |
bea03405 NK |
1589 | OPT_STRING('u', "uid", &record.opts.target.uid_str, "user", |
1590 | "user to profile"), | |
a5aabdac SE |
1591 | |
1592 | OPT_CALLBACK_NOOPT('b', "branch-any", &record.opts.branch_stack, | |
1593 | "branch any", "sample any taken branches", | |
1594 | parse_branch_stack), | |
1595 | ||
1596 | OPT_CALLBACK('j', "branch-filter", &record.opts.branch_stack, | |
1597 | "branch filter mask", "branch stack filter modes", | |
bdfebd84 | 1598 | parse_branch_stack), |
05484298 AK |
1599 | OPT_BOOLEAN('W', "weight", &record.opts.sample_weight, |
1600 | "sample by weight (on special events only)"), | |
475eeab9 AK |
1601 | OPT_BOOLEAN(0, "transaction", &record.opts.sample_transaction, |
1602 | "sample transaction flags (special events only)"), | |
3aa5939d AH |
1603 | OPT_BOOLEAN(0, "per-thread", &record.opts.target.per_thread, |
1604 | "use per-thread mmaps"), | |
bcc84ec6 SE |
1605 | OPT_CALLBACK_OPTARG('I', "intr-regs", &record.opts.sample_intr_regs, NULL, "any register", |
1606 | "sample selected machine registers on interrupt," | |
1607 | " use -I ? to list register names", parse_regs), | |
84c41742 AK |
1608 | OPT_CALLBACK_OPTARG(0, "user-regs", &record.opts.sample_user_regs, NULL, "any register", |
1609 | "sample selected machine registers on interrupt," | |
1610 | " use -I ? to list register names", parse_regs), | |
85c273d2 AK |
1611 | OPT_BOOLEAN(0, "running-time", &record.opts.running_time, |
1612 | "Record running/enabled time of read (:S) events"), | |
814c8c38 PZ |
1613 | OPT_CALLBACK('k', "clockid", &record.opts, |
1614 | "clockid", "clockid to use for events, see clock_gettime()", | |
1615 | parse_clockid), | |
2dd6d8a1 AH |
1616 | OPT_STRING_OPTARG('S', "snapshot", &record.opts.auxtrace_snapshot_opts, |
1617 | "opts", "AUX area tracing Snapshot Mode", ""), | |
9d9cad76 KL |
1618 | OPT_UINTEGER(0, "proc-map-timeout", &record.opts.proc_map_timeout, |
1619 | "per thread proc mmap processing timeout in ms"), | |
f3b3614a HB |
1620 | OPT_BOOLEAN(0, "namespaces", &record.opts.record_namespaces, |
1621 | "Record namespaces events"), | |
b757bb09 AH |
1622 | OPT_BOOLEAN(0, "switch-events", &record.opts.record_switch_events, |
1623 | "Record context switch events"), | |
85723885 JO |
1624 | OPT_BOOLEAN_FLAG(0, "all-kernel", &record.opts.all_kernel, |
1625 | "Configure all used events to run in kernel space.", | |
1626 | PARSE_OPT_EXCLUSIVE), | |
1627 | OPT_BOOLEAN_FLAG(0, "all-user", &record.opts.all_user, | |
1628 | "Configure all used events to run in user space.", | |
1629 | PARSE_OPT_EXCLUSIVE), | |
71dc2326 WN |
1630 | OPT_STRING(0, "clang-path", &llvm_param.clang_path, "clang path", |
1631 | "clang binary to use for compiling BPF scriptlets"), | |
1632 | OPT_STRING(0, "clang-opt", &llvm_param.clang_opt, "clang options", | |
1633 | "options passed to clang when compiling BPF scriptlets"), | |
7efe0e03 HK |
1634 | OPT_STRING(0, "vmlinux", &symbol_conf.vmlinux_name, |
1635 | "file", "vmlinux pathname"), | |
6156681b NK |
1636 | OPT_BOOLEAN(0, "buildid-all", &record.buildid_all, |
1637 | "Record build-id of all DSOs regardless of hits"), | |
ecfd7a9c WN |
1638 | OPT_BOOLEAN(0, "timestamp-filename", &record.timestamp_filename, |
1639 | "append timestamp to output filename"), | |
68588baf JY |
1640 | OPT_BOOLEAN(0, "timestamp-boundary", &record.timestamp_boundary, |
1641 | "Record timestamp boundary (time of first/last samples)"), | |
cb4e1ebb | 1642 | OPT_STRING_OPTARG_SET(0, "switch-output", &record.switch_output.str, |
bfacbe3b JO |
1643 | &record.switch_output.set, "signal,size,time", |
1644 | "Switch output when receive SIGUSR2 or cross size,time threshold", | |
dc0c6127 | 1645 | "signal"), |
0aab2136 WN |
1646 | OPT_BOOLEAN(0, "dry-run", &dry_run, |
1647 | "Parse options then exit"), | |
0e9b20b8 IM |
1648 | OPT_END() |
1649 | }; | |
1650 | ||
e5b2c207 NK |
1651 | struct option *record_options = __record_options; |
1652 | ||
b0ad8ea6 | 1653 | int cmd_record(int argc, const char **argv) |
0e9b20b8 | 1654 | { |
ef149c25 | 1655 | int err; |
8c6f45a7 | 1656 | struct record *rec = &record; |
16ad2ffb | 1657 | char errbuf[BUFSIZ]; |
0e9b20b8 | 1658 | |
67230479 ACM |
1659 | setlocale(LC_ALL, ""); |
1660 | ||
48e1cab1 WN |
1661 | #ifndef HAVE_LIBBPF_SUPPORT |
1662 | # define set_nobuild(s, l, c) set_option_nobuild(record_options, s, l, "NO_LIBBPF=1", c) | |
1663 | set_nobuild('\0', "clang-path", true); | |
1664 | set_nobuild('\0', "clang-opt", true); | |
1665 | # undef set_nobuild | |
7efe0e03 HK |
1666 | #endif |
1667 | ||
1668 | #ifndef HAVE_BPF_PROLOGUE | |
1669 | # if !defined (HAVE_DWARF_SUPPORT) | |
1670 | # define REASON "NO_DWARF=1" | |
1671 | # elif !defined (HAVE_LIBBPF_SUPPORT) | |
1672 | # define REASON "NO_LIBBPF=1" | |
1673 | # else | |
1674 | # define REASON "this architecture doesn't support BPF prologue" | |
1675 | # endif | |
1676 | # define set_nobuild(s, l, c) set_option_nobuild(record_options, s, l, REASON, c) | |
1677 | set_nobuild('\0', "vmlinux", true); | |
1678 | # undef set_nobuild | |
1679 | # undef REASON | |
48e1cab1 WN |
1680 | #endif |
1681 | ||
3e2be2da ACM |
1682 | rec->evlist = perf_evlist__new(); |
1683 | if (rec->evlist == NULL) | |
361c99a6 ACM |
1684 | return -ENOMEM; |
1685 | ||
ecc4c561 ACM |
1686 | err = perf_config(perf_record_config, rec); |
1687 | if (err) | |
1688 | return err; | |
eb853e80 | 1689 | |
bca647aa | 1690 | argc = parse_options(argc, argv, record_options, record_usage, |
655000e7 | 1691 | PARSE_OPT_STOP_AT_NON_OPTION); |
68ba3235 NK |
1692 | if (quiet) |
1693 | perf_quiet_option(); | |
483635a9 JO |
1694 | |
1695 | /* Make system wide (-a) the default target. */ | |
602ad878 | 1696 | if (!argc && target__none(&rec->opts.target)) |
483635a9 | 1697 | rec->opts.target.system_wide = true; |
0e9b20b8 | 1698 | |
bea03405 | 1699 | if (nr_cgroups && !rec->opts.target.system_wide) { |
c7118369 NK |
1700 | usage_with_options_msg(record_usage, record_options, |
1701 | "cgroup monitoring only available in system-wide mode"); | |
1702 | ||
023695d9 | 1703 | } |
b757bb09 AH |
1704 | if (rec->opts.record_switch_events && |
1705 | !perf_can_record_switch_events()) { | |
c7118369 NK |
1706 | ui__error("kernel does not support recording context switch events\n"); |
1707 | parse_options_usage(record_usage, record_options, "switch-events", 0); | |
1708 | return -EINVAL; | |
b757bb09 | 1709 | } |
023695d9 | 1710 | |
cb4e1ebb JO |
1711 | if (switch_output_setup(rec)) { |
1712 | parse_options_usage(record_usage, record_options, "switch-output", 0); | |
1713 | return -EINVAL; | |
1714 | } | |
1715 | ||
bfacbe3b JO |
1716 | if (rec->switch_output.time) { |
1717 | signal(SIGALRM, alarm_sig_handler); | |
1718 | alarm(rec->switch_output.time); | |
1719 | } | |
1720 | ||
ef149c25 AH |
1721 | if (!rec->itr) { |
1722 | rec->itr = auxtrace_record__init(rec->evlist, &err); | |
1723 | if (err) | |
5c01ad60 | 1724 | goto out; |
ef149c25 AH |
1725 | } |
1726 | ||
2dd6d8a1 AH |
1727 | err = auxtrace_parse_snapshot_options(rec->itr, &rec->opts, |
1728 | rec->opts.auxtrace_snapshot_opts); | |
1729 | if (err) | |
5c01ad60 | 1730 | goto out; |
2dd6d8a1 | 1731 | |
1b36c03e AH |
1732 | /* |
1733 | * Allow aliases to facilitate the lookup of symbols for address | |
1734 | * filters. Refer to auxtrace_parse_filters(). | |
1735 | */ | |
1736 | symbol_conf.allow_aliases = true; | |
1737 | ||
1738 | symbol__init(NULL); | |
1739 | ||
1740 | err = auxtrace_parse_filters(rec->evlist); | |
1741 | if (err) | |
1742 | goto out; | |
1743 | ||
0aab2136 | 1744 | if (dry_run) |
5c01ad60 | 1745 | goto out; |
0aab2136 | 1746 | |
d7888573 WN |
1747 | err = bpf__setup_stdout(rec->evlist); |
1748 | if (err) { | |
1749 | bpf__strerror_setup_stdout(rec->evlist, err, errbuf, sizeof(errbuf)); | |
1750 | pr_err("ERROR: Setup BPF stdout failed: %s\n", | |
1751 | errbuf); | |
5c01ad60 | 1752 | goto out; |
d7888573 WN |
1753 | } |
1754 | ||
ef149c25 AH |
1755 | err = -ENOMEM; |
1756 | ||
6c443954 | 1757 | if (symbol_conf.kptr_restrict && !perf_evlist__exclude_kernel(rec->evlist)) |
646aaea6 ACM |
1758 | pr_warning( |
1759 | "WARNING: Kernel address maps (/proc/{kallsyms,modules}) are restricted,\n" | |
1760 | "check /proc/sys/kernel/kptr_restrict.\n\n" | |
1761 | "Samples in kernel functions may not be resolved if a suitable vmlinux\n" | |
1762 | "file is not found in the buildid cache or in the vmlinux path.\n\n" | |
1763 | "Samples in kernel modules won't be resolved at all.\n\n" | |
1764 | "If some relocation was applied (e.g. kexec) symbols may be misresolved\n" | |
1765 | "even with a suitable vmlinux or kallsyms file.\n\n"); | |
ec80fde7 | 1766 | |
0c1d46a8 | 1767 | if (rec->no_buildid_cache || rec->no_buildid) { |
a1ac1d3c | 1768 | disable_buildid_cache(); |
dc0c6127 | 1769 | } else if (rec->switch_output.enabled) { |
0c1d46a8 WN |
1770 | /* |
1771 | * In 'perf record --switch-output', disable buildid | |
1772 | * generation by default to reduce data file switching | |
1773 | * overhead. Still generate buildid if they are required | |
1774 | * explicitly using | |
1775 | * | |
60437ac0 | 1776 | * perf record --switch-output --no-no-buildid \ |
0c1d46a8 WN |
1777 | * --no-no-buildid-cache |
1778 | * | |
1779 | * Following code equals to: | |
1780 | * | |
1781 | * if ((rec->no_buildid || !rec->no_buildid_set) && | |
1782 | * (rec->no_buildid_cache || !rec->no_buildid_cache_set)) | |
1783 | * disable_buildid_cache(); | |
1784 | */ | |
1785 | bool disable = true; | |
1786 | ||
1787 | if (rec->no_buildid_set && !rec->no_buildid) | |
1788 | disable = false; | |
1789 | if (rec->no_buildid_cache_set && !rec->no_buildid_cache) | |
1790 | disable = false; | |
1791 | if (disable) { | |
1792 | rec->no_buildid = true; | |
1793 | rec->no_buildid_cache = true; | |
1794 | disable_buildid_cache(); | |
1795 | } | |
1796 | } | |
655000e7 | 1797 | |
4ea648ae WN |
1798 | if (record.opts.overwrite) |
1799 | record.opts.tail_synthesize = true; | |
1800 | ||
3e2be2da | 1801 | if (rec->evlist->nr_entries == 0 && |
4b4cd503 | 1802 | __perf_evlist__add_default(rec->evlist, !record.opts.no_samples) < 0) { |
69aad6f1 | 1803 | pr_err("Not enough memory for event selector list\n"); |
394c01ed | 1804 | goto out; |
bbd36e5e | 1805 | } |
0e9b20b8 | 1806 | |
69e7e5b0 AH |
1807 | if (rec->opts.target.tid && !rec->opts.no_inherit_set) |
1808 | rec->opts.no_inherit = true; | |
1809 | ||
602ad878 | 1810 | err = target__validate(&rec->opts.target); |
16ad2ffb | 1811 | if (err) { |
602ad878 | 1812 | target__strerror(&rec->opts.target, err, errbuf, BUFSIZ); |
c3dec27b | 1813 | ui__warning("%s\n", errbuf); |
16ad2ffb NK |
1814 | } |
1815 | ||
602ad878 | 1816 | err = target__parse_uid(&rec->opts.target); |
16ad2ffb NK |
1817 | if (err) { |
1818 | int saved_errno = errno; | |
4bd0f2d2 | 1819 | |
602ad878 | 1820 | target__strerror(&rec->opts.target, err, errbuf, BUFSIZ); |
3780f488 | 1821 | ui__error("%s", errbuf); |
16ad2ffb NK |
1822 | |
1823 | err = -saved_errno; | |
394c01ed | 1824 | goto out; |
16ad2ffb | 1825 | } |
0d37aa34 | 1826 | |
ca800068 MZ |
1827 | /* Enable ignoring missing threads when -u/-p option is defined. */ |
1828 | rec->opts.ignore_missing_thread = rec->opts.target.uid != UINT_MAX || rec->opts.target.pid; | |
23dc4f15 | 1829 | |
16ad2ffb | 1830 | err = -ENOMEM; |
3e2be2da | 1831 | if (perf_evlist__create_maps(rec->evlist, &rec->opts.target) < 0) |
dd7927f4 | 1832 | usage_with_options(record_usage, record_options); |
69aad6f1 | 1833 | |
ef149c25 AH |
1834 | err = auxtrace_record__options(rec->itr, rec->evlist, &rec->opts); |
1835 | if (err) | |
394c01ed | 1836 | goto out; |
ef149c25 | 1837 | |
6156681b NK |
1838 | /* |
1839 | * We take all buildids when the file contains | |
1840 | * AUX area tracing data because we do not decode the | |
1841 | * trace because it would take too long. | |
1842 | */ | |
1843 | if (rec->opts.full_auxtrace) | |
1844 | rec->buildid_all = true; | |
1845 | ||
b4006796 | 1846 | if (record_opts__config(&rec->opts)) { |
39d17dac | 1847 | err = -EINVAL; |
394c01ed | 1848 | goto out; |
7e4ff9e3 MG |
1849 | } |
1850 | ||
d20deb64 | 1851 | err = __cmd_record(&record, argc, argv); |
394c01ed | 1852 | out: |
45604710 | 1853 | perf_evlist__delete(rec->evlist); |
d65a458b | 1854 | symbol__exit(); |
ef149c25 | 1855 | auxtrace_record__free(rec->itr); |
39d17dac | 1856 | return err; |
0e9b20b8 | 1857 | } |
2dd6d8a1 AH |
1858 | |
1859 | static void snapshot_sig_handler(int sig __maybe_unused) | |
1860 | { | |
dc0c6127 JO |
1861 | struct record *rec = &record; |
1862 | ||
5f9cf599 WN |
1863 | if (trigger_is_ready(&auxtrace_snapshot_trigger)) { |
1864 | trigger_hit(&auxtrace_snapshot_trigger); | |
1865 | auxtrace_record__snapshot_started = 1; | |
1866 | if (auxtrace_record__snapshot_start(record.itr)) | |
1867 | trigger_error(&auxtrace_snapshot_trigger); | |
1868 | } | |
3c1cb7e3 | 1869 | |
dc0c6127 | 1870 | if (switch_output_signal(rec)) |
3c1cb7e3 | 1871 | trigger_hit(&switch_output_trigger); |
2dd6d8a1 | 1872 | } |
bfacbe3b JO |
1873 | |
1874 | static void alarm_sig_handler(int sig __maybe_unused) | |
1875 | { | |
1876 | struct record *rec = &record; | |
1877 | ||
1878 | if (switch_output_time(rec)) | |
1879 | trigger_hit(&switch_output_trigger); | |
1880 | } |