Commit | Line | Data |
---|---|---|
abaff32a | 1 | /* |
bf9e1876 IM |
2 | * builtin-record.c |
3 | * | |
4 | * Builtin record command: Record the profile of a workload | |
5 | * (or a CPU, or a PID) into the perf.data output file - for | |
6 | * later analysis via perf report. | |
abaff32a | 7 | */ |
b8f46c5a XG |
8 | #define _FILE_OFFSET_BITS 64 |
9 | ||
16f762a2 | 10 | #include "builtin.h" |
bf9e1876 IM |
11 | |
12 | #include "perf.h" | |
13 | ||
6122e4e4 | 14 | #include "util/build-id.h" |
6eda5838 | 15 | #include "util/util.h" |
0e9b20b8 | 16 | #include "util/parse-options.h" |
8ad8db37 | 17 | #include "util/parse-events.h" |
6eda5838 | 18 | |
7c6a1c65 | 19 | #include "util/header.h" |
66e274f3 | 20 | #include "util/event.h" |
361c99a6 | 21 | #include "util/evlist.h" |
69aad6f1 | 22 | #include "util/evsel.h" |
8f28827a | 23 | #include "util/debug.h" |
94c744b6 | 24 | #include "util/session.h" |
45694aa7 | 25 | #include "util/tool.h" |
8d06367f | 26 | #include "util/symbol.h" |
a12b51c4 | 27 | #include "util/cpumap.h" |
fd78260b | 28 | #include "util/thread_map.h" |
7c6a1c65 | 29 | |
97124d5e | 30 | #include <unistd.h> |
de9ac07b | 31 | #include <sched.h> |
a41794cd | 32 | #include <sys/mman.h> |
de9ac07b | 33 | |
78da39fa BR |
34 | #ifndef HAVE_ON_EXIT |
35 | #ifndef ATEXIT_MAX | |
36 | #define ATEXIT_MAX 32 | |
37 | #endif | |
38 | static int __on_exit_count = 0; | |
39 | typedef void (*on_exit_func_t) (int, void *); | |
40 | static on_exit_func_t __on_exit_funcs[ATEXIT_MAX]; | |
41 | static void *__on_exit_args[ATEXIT_MAX]; | |
42 | static int __exitcode = 0; | |
43 | static void __handle_on_exit_funcs(void); | |
44 | static int on_exit(on_exit_func_t function, void *arg); | |
45 | #define exit(x) (exit)(__exitcode = (x)) | |
46 | ||
47 | static int on_exit(on_exit_func_t function, void *arg) | |
48 | { | |
49 | if (__on_exit_count == ATEXIT_MAX) | |
50 | return -ENOMEM; | |
51 | else if (__on_exit_count == 0) | |
52 | atexit(__handle_on_exit_funcs); | |
53 | __on_exit_funcs[__on_exit_count] = function; | |
54 | __on_exit_args[__on_exit_count++] = arg; | |
55 | return 0; | |
56 | } | |
57 | ||
58 | static void __handle_on_exit_funcs(void) | |
59 | { | |
60 | int i; | |
61 | for (i = 0; i < __on_exit_count; i++) | |
62 | __on_exit_funcs[i] (__exitcode, __on_exit_args[i]); | |
63 | } | |
64 | #endif | |
65 | ||
7865e817 FW |
66 | enum write_mode_t { |
67 | WRITE_FORCE, | |
68 | WRITE_APPEND | |
69 | }; | |
70 | ||
d20deb64 | 71 | struct perf_record { |
45694aa7 | 72 | struct perf_tool tool; |
d20deb64 ACM |
73 | struct perf_record_opts opts; |
74 | u64 bytes_written; | |
75 | const char *output_name; | |
76 | struct perf_evlist *evlist; | |
77 | struct perf_session *session; | |
78 | const char *progname; | |
79 | int output; | |
80 | unsigned int page_size; | |
81 | int realtime_prio; | |
82 | enum write_mode_t write_mode; | |
83 | bool no_buildid; | |
84 | bool no_buildid_cache; | |
85 | bool force; | |
86 | bool file_new; | |
87 | bool append_file; | |
88 | long samples; | |
89 | off_t post_processing_offset; | |
0f82ebc4 | 90 | }; |
a21ca2ca | 91 | |
d20deb64 | 92 | static void advance_output(struct perf_record *rec, size_t size) |
9215545e | 93 | { |
d20deb64 | 94 | rec->bytes_written += size; |
9215545e TZ |
95 | } |
96 | ||
8d3eca20 | 97 | static int write_output(struct perf_record *rec, void *buf, size_t size) |
f5970550 PZ |
98 | { |
99 | while (size) { | |
d20deb64 | 100 | int ret = write(rec->output, buf, size); |
f5970550 | 101 | |
8d3eca20 DA |
102 | if (ret < 0) { |
103 | pr_err("failed to write\n"); | |
104 | return -1; | |
105 | } | |
f5970550 PZ |
106 | |
107 | size -= ret; | |
108 | buf += ret; | |
109 | ||
d20deb64 | 110 | rec->bytes_written += ret; |
f5970550 | 111 | } |
8d3eca20 DA |
112 | |
113 | return 0; | |
f5970550 PZ |
114 | } |
115 | ||
45694aa7 | 116 | static int process_synthesized_event(struct perf_tool *tool, |
d20deb64 | 117 | union perf_event *event, |
1d037ca1 IT |
118 | struct perf_sample *sample __maybe_unused, |
119 | struct machine *machine __maybe_unused) | |
234fbbf5 | 120 | { |
45694aa7 | 121 | struct perf_record *rec = container_of(tool, struct perf_record, tool); |
8d3eca20 DA |
122 | if (write_output(rec, event, event->header.size) < 0) |
123 | return -1; | |
124 | ||
234fbbf5 ACM |
125 | return 0; |
126 | } | |
127 | ||
8d3eca20 | 128 | static int perf_record__mmap_read(struct perf_record *rec, |
d20deb64 | 129 | struct perf_mmap *md) |
de9ac07b | 130 | { |
744bd8aa | 131 | unsigned int head = perf_mmap__read_head(md); |
de9ac07b | 132 | unsigned int old = md->prev; |
d20deb64 | 133 | unsigned char *data = md->base + rec->page_size; |
de9ac07b PZ |
134 | unsigned long size; |
135 | void *buf; | |
8d3eca20 | 136 | int rc = 0; |
de9ac07b | 137 | |
dc82009a | 138 | if (old == head) |
8d3eca20 | 139 | return 0; |
dc82009a | 140 | |
d20deb64 | 141 | rec->samples++; |
de9ac07b PZ |
142 | |
143 | size = head - old; | |
144 | ||
145 | if ((old & md->mask) + size != (head & md->mask)) { | |
146 | buf = &data[old & md->mask]; | |
147 | size = md->mask + 1 - (old & md->mask); | |
148 | old += size; | |
021e9f47 | 149 | |
8d3eca20 DA |
150 | if (write_output(rec, buf, size) < 0) { |
151 | rc = -1; | |
152 | goto out; | |
153 | } | |
de9ac07b PZ |
154 | } |
155 | ||
156 | buf = &data[old & md->mask]; | |
157 | size = head - old; | |
158 | old += size; | |
021e9f47 | 159 | |
8d3eca20 DA |
160 | if (write_output(rec, buf, size) < 0) { |
161 | rc = -1; | |
162 | goto out; | |
163 | } | |
de9ac07b PZ |
164 | |
165 | md->prev = old; | |
115d2d89 | 166 | perf_mmap__write_tail(md, old); |
8d3eca20 DA |
167 | |
168 | out: | |
169 | return rc; | |
de9ac07b PZ |
170 | } |
171 | ||
172 | static volatile int done = 0; | |
f7b7c26e | 173 | static volatile int signr = -1; |
33e49ea7 | 174 | static volatile int child_finished = 0; |
de9ac07b | 175 | |
16c8a109 | 176 | static void sig_handler(int sig) |
de9ac07b | 177 | { |
33e49ea7 AK |
178 | if (sig == SIGCHLD) |
179 | child_finished = 1; | |
180 | ||
16c8a109 | 181 | done = 1; |
f7b7c26e PZ |
182 | signr = sig; |
183 | } | |
184 | ||
1d037ca1 | 185 | static void perf_record__sig_exit(int exit_status __maybe_unused, void *arg) |
f7b7c26e | 186 | { |
d20deb64 | 187 | struct perf_record *rec = arg; |
33e49ea7 AK |
188 | int status; |
189 | ||
d20deb64 | 190 | if (rec->evlist->workload.pid > 0) { |
33e49ea7 | 191 | if (!child_finished) |
d20deb64 | 192 | kill(rec->evlist->workload.pid, SIGTERM); |
33e49ea7 AK |
193 | |
194 | wait(&status); | |
195 | if (WIFSIGNALED(status)) | |
d20deb64 | 196 | psignal(WTERMSIG(status), rec->progname); |
33e49ea7 | 197 | } |
933da83a | 198 | |
18483b81 | 199 | if (signr == -1 || signr == SIGUSR1) |
f7b7c26e PZ |
200 | return; |
201 | ||
202 | signal(signr, SIG_DFL); | |
203 | kill(getpid(), signr); | |
de9ac07b PZ |
204 | } |
205 | ||
a91e5431 ACM |
206 | static bool perf_evlist__equal(struct perf_evlist *evlist, |
207 | struct perf_evlist *other) | |
208 | { | |
209 | struct perf_evsel *pos, *pair; | |
210 | ||
211 | if (evlist->nr_entries != other->nr_entries) | |
212 | return false; | |
213 | ||
0c21f736 | 214 | pair = perf_evlist__first(other); |
a91e5431 ACM |
215 | |
216 | list_for_each_entry(pos, &evlist->entries, node) { | |
217 | if (memcmp(&pos->attr, &pair->attr, sizeof(pos->attr) != 0)) | |
218 | return false; | |
0c21f736 | 219 | pair = perf_evsel__next(pair); |
a91e5431 ACM |
220 | } |
221 | ||
222 | return true; | |
223 | } | |
224 | ||
8d3eca20 | 225 | static int perf_record__open(struct perf_record *rec) |
dd7927f4 | 226 | { |
6a4bb04c | 227 | struct perf_evsel *pos; |
d20deb64 ACM |
228 | struct perf_evlist *evlist = rec->evlist; |
229 | struct perf_session *session = rec->session; | |
230 | struct perf_record_opts *opts = &rec->opts; | |
8d3eca20 | 231 | int rc = 0; |
dd7927f4 | 232 | |
d20deb64 | 233 | perf_evlist__config_attrs(evlist, opts); |
0f82ebc4 | 234 | |
6a4bb04c | 235 | if (opts->group) |
63dab225 | 236 | perf_evlist__set_leader(evlist); |
6a4bb04c | 237 | |
dd7927f4 ACM |
238 | list_for_each_entry(pos, &evlist->entries, node) { |
239 | struct perf_event_attr *attr = &pos->attr; | |
240 | /* | |
241 | * Check if parse_single_tracepoint_event has already asked for | |
242 | * PERF_SAMPLE_TIME. | |
243 | * | |
244 | * XXX this is kludgy but short term fix for problems introduced by | |
245 | * eac23d1c that broke 'perf script' by having different sample_types | |
246 | * when using multiple tracepoint events when we use a perf binary | |
247 | * that tries to use sample_id_all on an older kernel. | |
248 | * | |
249 | * We need to move counter creation to perf_session, support | |
250 | * different sample_types, etc. | |
251 | */ | |
252 | bool time_needed = attr->sample_type & PERF_SAMPLE_TIME; | |
d6d901c2 | 253 | |
0c978128 ACM |
254 | fallback_missing_features: |
255 | if (opts->exclude_guest_missing) | |
256 | attr->exclude_guest = attr->exclude_host = 0; | |
dd7927f4 | 257 | retry_sample_id: |
808e1226 | 258 | attr->sample_id_all = opts->sample_id_all_missing ? 0 : 1; |
dd7927f4 | 259 | try_again: |
6a4bb04c | 260 | if (perf_evsel__open(pos, evlist->cpus, evlist->threads) < 0) { |
d6d901c2 ZY |
261 | int err = errno; |
262 | ||
c286c419 | 263 | if (err == EPERM || err == EACCES) { |
b8631e6e | 264 | ui__error_paranoid(); |
8d3eca20 DA |
265 | rc = -err; |
266 | goto out; | |
bea03405 | 267 | } else if (err == ENODEV && opts->target.cpu_list) { |
8d3eca20 DA |
268 | pr_err("No such device - did you specify" |
269 | " an out-of-range profile CPU?\n"); | |
270 | rc = -err; | |
271 | goto out; | |
0c978128 ACM |
272 | } else if (err == EINVAL) { |
273 | if (!opts->exclude_guest_missing && | |
274 | (attr->exclude_guest || attr->exclude_host)) { | |
275 | pr_debug("Old kernel, cannot exclude " | |
276 | "guest or host samples.\n"); | |
277 | opts->exclude_guest_missing = true; | |
278 | goto fallback_missing_features; | |
808e1226 | 279 | } else if (!opts->sample_id_all_missing) { |
0c978128 ACM |
280 | /* |
281 | * Old kernel, no attr->sample_id_type_all field | |
282 | */ | |
808e1226 | 283 | opts->sample_id_all_missing = true; |
0c978128 ACM |
284 | if (!opts->sample_time && !opts->raw_samples && !time_needed) |
285 | attr->sample_type &= ~PERF_SAMPLE_TIME; | |
286 | ||
287 | goto retry_sample_id; | |
288 | } | |
d6d901c2 | 289 | } |
3da297a6 | 290 | |
d6d901c2 ZY |
291 | /* |
292 | * If it's cycles then fall back to hrtimer | |
293 | * based cpu-clock-tick sw counter, which | |
028d455b DA |
294 | * is always available even if no PMU support. |
295 | * | |
296 | * PPC returns ENXIO until 2.6.37 (behavior changed | |
297 | * with commit b0a873e). | |
d6d901c2 | 298 | */ |
028d455b DA |
299 | if ((err == ENOENT || err == ENXIO) |
300 | && attr->type == PERF_TYPE_HARDWARE | |
d6d901c2 ZY |
301 | && attr->config == PERF_COUNT_HW_CPU_CYCLES) { |
302 | ||
303 | if (verbose) | |
ca6a4258 DA |
304 | ui__warning("The cycles event is not supported, " |
305 | "trying to fall back to cpu-clock-ticks\n"); | |
d6d901c2 ZY |
306 | attr->type = PERF_TYPE_SOFTWARE; |
307 | attr->config = PERF_COUNT_SW_CPU_CLOCK; | |
d1cae34d DA |
308 | if (pos->name) { |
309 | free(pos->name); | |
310 | pos->name = NULL; | |
311 | } | |
d6d901c2 ZY |
312 | goto try_again; |
313 | } | |
ca6a4258 DA |
314 | |
315 | if (err == ENOENT) { | |
3780f488 | 316 | ui__error("The %s event is not supported.\n", |
7289f83c | 317 | perf_evsel__name(pos)); |
8d3eca20 DA |
318 | rc = -err; |
319 | goto out; | |
2305c82f DA |
320 | } else if ((err == EOPNOTSUPP) && (attr->precise_ip)) { |
321 | ui__error("\'precise\' request may not be supported. " | |
322 | "Try removing 'p' modifier\n"); | |
323 | rc = -err; | |
324 | goto out; | |
ca6a4258 DA |
325 | } |
326 | ||
d6d901c2 | 327 | printf("\n"); |
1863fbbb SE |
328 | error("sys_perf_event_open() syscall returned with %d " |
329 | "(%s) for event %s. /bin/dmesg may provide " | |
330 | "additional information.\n", | |
331 | err, strerror(err), perf_evsel__name(pos)); | |
bfd45118 SK |
332 | |
333 | #if defined(__i386__) || defined(__x86_64__) | |
8d3eca20 DA |
334 | if (attr->type == PERF_TYPE_HARDWARE && |
335 | err == EOPNOTSUPP) { | |
336 | pr_err("No hardware sampling interrupt available." | |
337 | " No APIC? If so then you can boot the kernel" | |
338 | " with the \"lapic\" boot parameter to" | |
339 | " force-enable it.\n"); | |
340 | rc = -err; | |
341 | goto out; | |
342 | } | |
bfd45118 SK |
343 | #endif |
344 | ||
8d3eca20 DA |
345 | pr_err("No CONFIG_PERF_EVENTS=y kernel support configured?\n"); |
346 | rc = -err; | |
347 | goto out; | |
c171b552 LZ |
348 | } |
349 | } | |
a43d3f08 | 350 | |
1491a632 | 351 | if (perf_evlist__apply_filters(evlist)) { |
0a102479 FW |
352 | error("failed to set filter with %d (%s)\n", errno, |
353 | strerror(errno)); | |
8d3eca20 DA |
354 | rc = -1; |
355 | goto out; | |
0a102479 FW |
356 | } |
357 | ||
18e60939 | 358 | if (perf_evlist__mmap(evlist, opts->mmap_pages, false) < 0) { |
8d3eca20 DA |
359 | if (errno == EPERM) { |
360 | pr_err("Permission error mapping pages.\n" | |
361 | "Consider increasing " | |
362 | "/proc/sys/kernel/perf_event_mlock_kb,\n" | |
363 | "or try again with a smaller value of -m/--mmap_pages.\n" | |
364 | "(current value: %d)\n", opts->mmap_pages); | |
365 | rc = -errno; | |
0089fa98 JO |
366 | } else if (!is_power_of_2(opts->mmap_pages) && |
367 | (opts->mmap_pages != UINT_MAX)) { | |
8d3eca20 DA |
368 | pr_err("--mmap_pages/-m value must be a power of two."); |
369 | rc = -EINVAL; | |
370 | } else { | |
371 | pr_err("failed to mmap with %d (%s)\n", errno, strerror(errno)); | |
372 | rc = -errno; | |
373 | } | |
374 | goto out; | |
18e60939 | 375 | } |
0a27d7f9 | 376 | |
d20deb64 | 377 | if (rec->file_new) |
a91e5431 ACM |
378 | session->evlist = evlist; |
379 | else { | |
380 | if (!perf_evlist__equal(session->evlist, evlist)) { | |
381 | fprintf(stderr, "incompatible append\n"); | |
8d3eca20 DA |
382 | rc = -1; |
383 | goto out; | |
a91e5431 ACM |
384 | } |
385 | } | |
386 | ||
7b56cce2 | 387 | perf_session__set_id_hdr_size(session); |
8d3eca20 DA |
388 | out: |
389 | return rc; | |
16c8a109 PZ |
390 | } |
391 | ||
d20deb64 | 392 | static int process_buildids(struct perf_record *rec) |
6122e4e4 | 393 | { |
d20deb64 | 394 | u64 size = lseek(rec->output, 0, SEEK_CUR); |
6122e4e4 | 395 | |
9f591fd7 ACM |
396 | if (size == 0) |
397 | return 0; | |
398 | ||
d20deb64 ACM |
399 | rec->session->fd = rec->output; |
400 | return __perf_session__process_events(rec->session, rec->post_processing_offset, | |
401 | size - rec->post_processing_offset, | |
6122e4e4 ACM |
402 | size, &build_id__mark_dso_hit_ops); |
403 | } | |
404 | ||
8d3eca20 | 405 | static void perf_record__exit(int status, void *arg) |
f5970550 | 406 | { |
d20deb64 ACM |
407 | struct perf_record *rec = arg; |
408 | ||
8d3eca20 DA |
409 | if (status != 0) |
410 | return; | |
411 | ||
d20deb64 ACM |
412 | if (!rec->opts.pipe_output) { |
413 | rec->session->header.data_size += rec->bytes_written; | |
414 | ||
415 | if (!rec->no_buildid) | |
416 | process_buildids(rec); | |
417 | perf_session__write_header(rec->session, rec->evlist, | |
418 | rec->output, true); | |
419 | perf_session__delete(rec->session); | |
420 | perf_evlist__delete(rec->evlist); | |
d65a458b | 421 | symbol__exit(); |
c7929e47 | 422 | } |
f5970550 PZ |
423 | } |
424 | ||
8115d60c | 425 | static void perf_event__synthesize_guest_os(struct machine *machine, void *data) |
a1645ce1 ZY |
426 | { |
427 | int err; | |
45694aa7 | 428 | struct perf_tool *tool = data; |
a1645ce1 | 429 | |
23346f21 | 430 | if (machine__is_host(machine)) |
a1645ce1 ZY |
431 | return; |
432 | ||
433 | /* | |
434 | *As for guest kernel when processing subcommand record&report, | |
435 | *we arrange module mmap prior to guest kernel mmap and trigger | |
436 | *a preload dso because default guest module symbols are loaded | |
437 | *from guest kallsyms instead of /lib/modules/XXX/XXX. This | |
438 | *method is used to avoid symbol missing when the first addr is | |
439 | *in module instead of in guest kernel. | |
440 | */ | |
45694aa7 | 441 | err = perf_event__synthesize_modules(tool, process_synthesized_event, |
743eb868 | 442 | machine); |
a1645ce1 ZY |
443 | if (err < 0) |
444 | pr_err("Couldn't record guest kernel [%d]'s reference" | |
23346f21 | 445 | " relocation symbol.\n", machine->pid); |
a1645ce1 | 446 | |
a1645ce1 ZY |
447 | /* |
448 | * We use _stext for guest kernel because guest kernel's /proc/kallsyms | |
449 | * have no _text sometimes. | |
450 | */ | |
45694aa7 | 451 | err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event, |
743eb868 | 452 | machine, "_text"); |
a1645ce1 | 453 | if (err < 0) |
45694aa7 | 454 | err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event, |
743eb868 | 455 | machine, "_stext"); |
a1645ce1 ZY |
456 | if (err < 0) |
457 | pr_err("Couldn't record guest kernel [%d]'s reference" | |
23346f21 | 458 | " relocation symbol.\n", machine->pid); |
a1645ce1 ZY |
459 | } |
460 | ||
98402807 FW |
461 | static struct perf_event_header finished_round_event = { |
462 | .size = sizeof(struct perf_event_header), | |
463 | .type = PERF_RECORD_FINISHED_ROUND, | |
464 | }; | |
465 | ||
8d3eca20 | 466 | static int perf_record__mmap_read_all(struct perf_record *rec) |
98402807 | 467 | { |
0e2e63dd | 468 | int i; |
8d3eca20 | 469 | int rc = 0; |
98402807 | 470 | |
d20deb64 | 471 | for (i = 0; i < rec->evlist->nr_mmaps; i++) { |
8d3eca20 DA |
472 | if (rec->evlist->mmap[i].base) { |
473 | if (perf_record__mmap_read(rec, &rec->evlist->mmap[i]) != 0) { | |
474 | rc = -1; | |
475 | goto out; | |
476 | } | |
477 | } | |
98402807 FW |
478 | } |
479 | ||
2eeaaa09 | 480 | if (perf_header__has_feat(&rec->session->header, HEADER_TRACING_DATA)) |
8d3eca20 DA |
481 | rc = write_output(rec, &finished_round_event, |
482 | sizeof(finished_round_event)); | |
483 | ||
484 | out: | |
485 | return rc; | |
98402807 FW |
486 | } |
487 | ||
d20deb64 | 488 | static int __cmd_record(struct perf_record *rec, int argc, const char **argv) |
16c8a109 | 489 | { |
abaff32a | 490 | struct stat st; |
abaff32a | 491 | int flags; |
781ba9d2 | 492 | int err, output, feat; |
8b412664 | 493 | unsigned long waking = 0; |
46be604b | 494 | const bool forks = argc > 0; |
23346f21 | 495 | struct machine *machine; |
45694aa7 | 496 | struct perf_tool *tool = &rec->tool; |
d20deb64 ACM |
497 | struct perf_record_opts *opts = &rec->opts; |
498 | struct perf_evlist *evsel_list = rec->evlist; | |
499 | const char *output_name = rec->output_name; | |
500 | struct perf_session *session; | |
de9ac07b | 501 | |
d20deb64 | 502 | rec->progname = argv[0]; |
33e49ea7 | 503 | |
d20deb64 | 504 | rec->page_size = sysconf(_SC_PAGE_SIZE); |
de9ac07b | 505 | |
d20deb64 | 506 | on_exit(perf_record__sig_exit, rec); |
f5970550 PZ |
507 | signal(SIGCHLD, sig_handler); |
508 | signal(SIGINT, sig_handler); | |
18483b81 | 509 | signal(SIGUSR1, sig_handler); |
f5970550 | 510 | |
d7065adb FBH |
511 | if (!output_name) { |
512 | if (!fstat(STDOUT_FILENO, &st) && S_ISFIFO(st.st_mode)) | |
d20deb64 | 513 | opts->pipe_output = true; |
d7065adb | 514 | else |
d20deb64 | 515 | rec->output_name = output_name = "perf.data"; |
d7065adb FBH |
516 | } |
517 | if (output_name) { | |
518 | if (!strcmp(output_name, "-")) | |
d20deb64 | 519 | opts->pipe_output = true; |
d7065adb | 520 | else if (!stat(output_name, &st) && st.st_size) { |
d20deb64 | 521 | if (rec->write_mode == WRITE_FORCE) { |
d7065adb FBH |
522 | char oldname[PATH_MAX]; |
523 | snprintf(oldname, sizeof(oldname), "%s.old", | |
524 | output_name); | |
525 | unlink(oldname); | |
526 | rename(output_name, oldname); | |
527 | } | |
d20deb64 ACM |
528 | } else if (rec->write_mode == WRITE_APPEND) { |
529 | rec->write_mode = WRITE_FORCE; | |
266e0e21 | 530 | } |
97124d5e PZ |
531 | } |
532 | ||
f887f301 | 533 | flags = O_CREAT|O_RDWR; |
d20deb64 ACM |
534 | if (rec->write_mode == WRITE_APPEND) |
535 | rec->file_new = 0; | |
abaff32a IM |
536 | else |
537 | flags |= O_TRUNC; | |
538 | ||
d20deb64 | 539 | if (opts->pipe_output) |
529870e3 TZ |
540 | output = STDOUT_FILENO; |
541 | else | |
542 | output = open(output_name, flags, S_IRUSR | S_IWUSR); | |
de9ac07b PZ |
543 | if (output < 0) { |
544 | perror("failed to create output file"); | |
8d3eca20 | 545 | return -1; |
de9ac07b PZ |
546 | } |
547 | ||
d20deb64 ACM |
548 | rec->output = output; |
549 | ||
7865e817 | 550 | session = perf_session__new(output_name, O_WRONLY, |
d20deb64 | 551 | rec->write_mode == WRITE_FORCE, false, NULL); |
94c744b6 | 552 | if (session == NULL) { |
a9a70bbc ACM |
553 | pr_err("Not enough memory for reading perf file header\n"); |
554 | return -1; | |
555 | } | |
556 | ||
d20deb64 ACM |
557 | rec->session = session; |
558 | ||
781ba9d2 RR |
559 | for (feat = HEADER_FIRST_FEATURE; feat < HEADER_LAST_FEATURE; feat++) |
560 | perf_header__set_feat(&session->header, feat); | |
561 | ||
562 | if (rec->no_buildid) | |
563 | perf_header__clear_feat(&session->header, HEADER_BUILD_ID); | |
564 | ||
565 | if (!have_tracepoints(&evsel_list->entries)) | |
2eeaaa09 | 566 | perf_header__clear_feat(&session->header, HEADER_TRACING_DATA); |
baa2f6ce | 567 | |
330aa675 SE |
568 | if (!rec->opts.branch_stack) |
569 | perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK); | |
570 | ||
d20deb64 | 571 | if (!rec->file_new) { |
a91e5431 | 572 | err = perf_session__read_header(session, output); |
4dc0a04b | 573 | if (err < 0) |
39d17dac | 574 | goto out_delete_session; |
4dc0a04b ACM |
575 | } |
576 | ||
d4db3f16 | 577 | if (forks) { |
d20deb64 | 578 | err = perf_evlist__prepare_workload(evsel_list, opts, argv); |
35b9d88e ACM |
579 | if (err < 0) { |
580 | pr_err("Couldn't run the workload!\n"); | |
581 | goto out_delete_session; | |
856e9660 | 582 | } |
856e9660 PZ |
583 | } |
584 | ||
8d3eca20 DA |
585 | if (perf_record__open(rec) != 0) { |
586 | err = -1; | |
587 | goto out_delete_session; | |
588 | } | |
de9ac07b | 589 | |
712a4b60 | 590 | /* |
d20deb64 | 591 | * perf_session__delete(session) will be called at perf_record__exit() |
712a4b60 | 592 | */ |
d20deb64 | 593 | on_exit(perf_record__exit, rec); |
712a4b60 | 594 | |
d20deb64 | 595 | if (opts->pipe_output) { |
529870e3 TZ |
596 | err = perf_header__write_pipe(output); |
597 | if (err < 0) | |
8d3eca20 | 598 | goto out_delete_session; |
d20deb64 | 599 | } else if (rec->file_new) { |
a91e5431 ACM |
600 | err = perf_session__write_header(session, evsel_list, |
601 | output, false); | |
d5eed904 | 602 | if (err < 0) |
8d3eca20 | 603 | goto out_delete_session; |
56b03f3c ACM |
604 | } |
605 | ||
d3665498 | 606 | if (!rec->no_buildid |
e20960c0 | 607 | && !perf_header__has_feat(&session->header, HEADER_BUILD_ID)) { |
d3665498 | 608 | pr_err("Couldn't generate buildids. " |
e20960c0 | 609 | "Use --no-buildid to profile anyway.\n"); |
8d3eca20 DA |
610 | err = -1; |
611 | goto out_delete_session; | |
e20960c0 RR |
612 | } |
613 | ||
d20deb64 | 614 | rec->post_processing_offset = lseek(output, 0, SEEK_CUR); |
6122e4e4 | 615 | |
743eb868 ACM |
616 | machine = perf_session__find_host_machine(session); |
617 | if (!machine) { | |
618 | pr_err("Couldn't find native kernel information.\n"); | |
8d3eca20 DA |
619 | err = -1; |
620 | goto out_delete_session; | |
743eb868 ACM |
621 | } |
622 | ||
d20deb64 | 623 | if (opts->pipe_output) { |
45694aa7 | 624 | err = perf_event__synthesize_attrs(tool, session, |
d20deb64 | 625 | process_synthesized_event); |
2c46dbb5 TZ |
626 | if (err < 0) { |
627 | pr_err("Couldn't synthesize attrs.\n"); | |
8d3eca20 | 628 | goto out_delete_session; |
2c46dbb5 | 629 | } |
cd19a035 | 630 | |
45694aa7 | 631 | err = perf_event__synthesize_event_types(tool, process_synthesized_event, |
743eb868 | 632 | machine); |
cd19a035 TZ |
633 | if (err < 0) { |
634 | pr_err("Couldn't synthesize event_types.\n"); | |
8d3eca20 | 635 | goto out_delete_session; |
cd19a035 | 636 | } |
9215545e | 637 | |
361c99a6 | 638 | if (have_tracepoints(&evsel_list->entries)) { |
63e0c771 TZ |
639 | /* |
640 | * FIXME err <= 0 here actually means that | |
641 | * there were no tracepoints so its not really | |
642 | * an error, just that we don't need to | |
643 | * synthesize anything. We really have to | |
644 | * return this more properly and also | |
645 | * propagate errors that now are calling die() | |
646 | */ | |
45694aa7 | 647 | err = perf_event__synthesize_tracing_data(tool, output, evsel_list, |
743eb868 | 648 | process_synthesized_event); |
63e0c771 TZ |
649 | if (err <= 0) { |
650 | pr_err("Couldn't record tracing data.\n"); | |
8d3eca20 | 651 | goto out_delete_session; |
63e0c771 | 652 | } |
d20deb64 | 653 | advance_output(rec, err); |
63e0c771 | 654 | } |
2c46dbb5 TZ |
655 | } |
656 | ||
45694aa7 | 657 | err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event, |
743eb868 | 658 | machine, "_text"); |
70162138 | 659 | if (err < 0) |
45694aa7 | 660 | err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event, |
743eb868 | 661 | machine, "_stext"); |
c1a3a4b9 ACM |
662 | if (err < 0) |
663 | pr_err("Couldn't record kernel reference relocation symbol\n" | |
664 | "Symbol resolution may be skewed if relocation was used (e.g. kexec).\n" | |
665 | "Check /proc/kallsyms permission or run as root.\n"); | |
b7cece76 | 666 | |
45694aa7 | 667 | err = perf_event__synthesize_modules(tool, process_synthesized_event, |
743eb868 | 668 | machine); |
c1a3a4b9 ACM |
669 | if (err < 0) |
670 | pr_err("Couldn't record kernel module information.\n" | |
671 | "Symbol resolution may be skewed if relocation was used (e.g. kexec).\n" | |
672 | "Check /proc/modules permission or run as root.\n"); | |
673 | ||
a1645ce1 | 674 | if (perf_guest) |
45694aa7 | 675 | perf_session__process_machines(session, tool, |
8115d60c | 676 | perf_event__synthesize_guest_os); |
7c6a1c65 | 677 | |
bea03405 | 678 | if (!opts->target.system_wide) |
8d3eca20 | 679 | err = perf_event__synthesize_thread_map(tool, evsel_list->threads, |
7c940c18 | 680 | process_synthesized_event, |
743eb868 | 681 | machine); |
234fbbf5 | 682 | else |
8d3eca20 | 683 | err = perf_event__synthesize_threads(tool, process_synthesized_event, |
743eb868 | 684 | machine); |
7c6a1c65 | 685 | |
8d3eca20 DA |
686 | if (err != 0) |
687 | goto out_delete_session; | |
688 | ||
d20deb64 | 689 | if (rec->realtime_prio) { |
de9ac07b PZ |
690 | struct sched_param param; |
691 | ||
d20deb64 | 692 | param.sched_priority = rec->realtime_prio; |
de9ac07b | 693 | if (sched_setscheduler(0, SCHED_FIFO, ¶m)) { |
6beba7ad | 694 | pr_err("Could not set realtime priority.\n"); |
8d3eca20 DA |
695 | err = -1; |
696 | goto out_delete_session; | |
de9ac07b PZ |
697 | } |
698 | } | |
699 | ||
764e16a3 DA |
700 | perf_evlist__enable(evsel_list); |
701 | ||
856e9660 PZ |
702 | /* |
703 | * Let the child rip | |
704 | */ | |
d4db3f16 | 705 | if (forks) |
35b9d88e | 706 | perf_evlist__start_workload(evsel_list); |
856e9660 | 707 | |
649c48a9 | 708 | for (;;) { |
d20deb64 | 709 | int hits = rec->samples; |
de9ac07b | 710 | |
8d3eca20 DA |
711 | if (perf_record__mmap_read_all(rec) < 0) { |
712 | err = -1; | |
713 | goto out_delete_session; | |
714 | } | |
de9ac07b | 715 | |
d20deb64 | 716 | if (hits == rec->samples) { |
649c48a9 PZ |
717 | if (done) |
718 | break; | |
5c581041 | 719 | err = poll(evsel_list->pollfd, evsel_list->nr_fds, -1); |
8b412664 PZ |
720 | waking++; |
721 | } | |
722 | ||
4152ab37 ACM |
723 | if (done) |
724 | perf_evlist__disable(evsel_list); | |
de9ac07b PZ |
725 | } |
726 | ||
18483b81 | 727 | if (quiet || signr == SIGUSR1) |
b44308f5 ACM |
728 | return 0; |
729 | ||
8b412664 PZ |
730 | fprintf(stderr, "[ perf record: Woken up %ld times to write data ]\n", waking); |
731 | ||
021e9f47 IM |
732 | /* |
733 | * Approximate RIP event size: 24 bytes. | |
734 | */ | |
735 | fprintf(stderr, | |
9486aa38 | 736 | "[ perf record: Captured and wrote %.3f MB %s (~%" PRIu64 " samples) ]\n", |
d20deb64 | 737 | (double)rec->bytes_written / 1024.0 / 1024.0, |
021e9f47 | 738 | output_name, |
d20deb64 | 739 | rec->bytes_written / 24); |
addc2785 | 740 | |
de9ac07b | 741 | return 0; |
39d17dac ACM |
742 | |
743 | out_delete_session: | |
744 | perf_session__delete(session); | |
745 | return err; | |
de9ac07b | 746 | } |
0e9b20b8 | 747 | |
bdfebd84 RAV |
748 | #define BRANCH_OPT(n, m) \ |
749 | { .name = n, .mode = (m) } | |
750 | ||
751 | #define BRANCH_END { .name = NULL } | |
752 | ||
753 | struct branch_mode { | |
754 | const char *name; | |
755 | int mode; | |
756 | }; | |
757 | ||
758 | static const struct branch_mode branch_modes[] = { | |
759 | BRANCH_OPT("u", PERF_SAMPLE_BRANCH_USER), | |
760 | BRANCH_OPT("k", PERF_SAMPLE_BRANCH_KERNEL), | |
761 | BRANCH_OPT("hv", PERF_SAMPLE_BRANCH_HV), | |
762 | BRANCH_OPT("any", PERF_SAMPLE_BRANCH_ANY), | |
763 | BRANCH_OPT("any_call", PERF_SAMPLE_BRANCH_ANY_CALL), | |
764 | BRANCH_OPT("any_ret", PERF_SAMPLE_BRANCH_ANY_RETURN), | |
765 | BRANCH_OPT("ind_call", PERF_SAMPLE_BRANCH_IND_CALL), | |
766 | BRANCH_END | |
767 | }; | |
768 | ||
769 | static int | |
a5aabdac | 770 | parse_branch_stack(const struct option *opt, const char *str, int unset) |
bdfebd84 RAV |
771 | { |
772 | #define ONLY_PLM \ | |
773 | (PERF_SAMPLE_BRANCH_USER |\ | |
774 | PERF_SAMPLE_BRANCH_KERNEL |\ | |
775 | PERF_SAMPLE_BRANCH_HV) | |
776 | ||
777 | uint64_t *mode = (uint64_t *)opt->value; | |
778 | const struct branch_mode *br; | |
a5aabdac | 779 | char *s, *os = NULL, *p; |
bdfebd84 RAV |
780 | int ret = -1; |
781 | ||
a5aabdac SE |
782 | if (unset) |
783 | return 0; | |
bdfebd84 | 784 | |
a5aabdac SE |
785 | /* |
786 | * cannot set it twice, -b + --branch-filter for instance | |
787 | */ | |
788 | if (*mode) | |
bdfebd84 RAV |
789 | return -1; |
790 | ||
a5aabdac SE |
791 | /* str may be NULL in case no arg is passed to -b */ |
792 | if (str) { | |
793 | /* because str is read-only */ | |
794 | s = os = strdup(str); | |
795 | if (!s) | |
796 | return -1; | |
797 | ||
798 | for (;;) { | |
799 | p = strchr(s, ','); | |
800 | if (p) | |
801 | *p = '\0'; | |
802 | ||
803 | for (br = branch_modes; br->name; br++) { | |
804 | if (!strcasecmp(s, br->name)) | |
805 | break; | |
806 | } | |
807 | if (!br->name) { | |
808 | ui__warning("unknown branch filter %s," | |
809 | " check man page\n", s); | |
810 | goto error; | |
811 | } | |
bdfebd84 | 812 | |
a5aabdac | 813 | *mode |= br->mode; |
bdfebd84 | 814 | |
a5aabdac SE |
815 | if (!p) |
816 | break; | |
bdfebd84 | 817 | |
a5aabdac SE |
818 | s = p + 1; |
819 | } | |
bdfebd84 RAV |
820 | } |
821 | ret = 0; | |
822 | ||
a5aabdac | 823 | /* default to any branch */ |
bdfebd84 | 824 | if ((*mode & ~ONLY_PLM) == 0) { |
a5aabdac | 825 | *mode = PERF_SAMPLE_BRANCH_ANY; |
bdfebd84 RAV |
826 | } |
827 | error: | |
828 | free(os); | |
829 | return ret; | |
830 | } | |
831 | ||
95485b1c | 832 | #ifdef LIBUNWIND_SUPPORT |
26d33022 JO |
833 | static int get_stack_size(char *str, unsigned long *_size) |
834 | { | |
835 | char *endptr; | |
836 | unsigned long size; | |
837 | unsigned long max_size = round_down(USHRT_MAX, sizeof(u64)); | |
838 | ||
839 | size = strtoul(str, &endptr, 0); | |
840 | ||
841 | do { | |
842 | if (*endptr) | |
843 | break; | |
844 | ||
845 | size = round_up(size, sizeof(u64)); | |
846 | if (!size || size > max_size) | |
847 | break; | |
848 | ||
849 | *_size = size; | |
850 | return 0; | |
851 | ||
852 | } while (0); | |
853 | ||
854 | pr_err("callchain: Incorrect stack dump size (max %ld): %s\n", | |
855 | max_size, str); | |
856 | return -1; | |
857 | } | |
95485b1c | 858 | #endif /* LIBUNWIND_SUPPORT */ |
26d33022 JO |
859 | |
860 | static int | |
1d037ca1 | 861 | parse_callchain_opt(const struct option *opt __maybe_unused, const char *arg, |
26d33022 JO |
862 | int unset) |
863 | { | |
864 | struct perf_record *rec = (struct perf_record *)opt->value; | |
865 | char *tok, *name, *saveptr = NULL; | |
866 | char *buf; | |
867 | int ret = -1; | |
868 | ||
869 | /* --no-call-graph */ | |
870 | if (unset) | |
871 | return 0; | |
872 | ||
873 | /* We specified default option if none is provided. */ | |
874 | BUG_ON(!arg); | |
875 | ||
876 | /* We need buffer that we know we can write to. */ | |
877 | buf = malloc(strlen(arg) + 1); | |
878 | if (!buf) | |
879 | return -ENOMEM; | |
880 | ||
881 | strcpy(buf, arg); | |
882 | ||
883 | tok = strtok_r((char *)buf, ",", &saveptr); | |
884 | name = tok ? : (char *)buf; | |
885 | ||
886 | do { | |
887 | /* Framepointer style */ | |
888 | if (!strncmp(name, "fp", sizeof("fp"))) { | |
889 | if (!strtok_r(NULL, ",", &saveptr)) { | |
890 | rec->opts.call_graph = CALLCHAIN_FP; | |
891 | ret = 0; | |
892 | } else | |
893 | pr_err("callchain: No more arguments " | |
894 | "needed for -g fp\n"); | |
895 | break; | |
896 | ||
95485b1c | 897 | #ifdef LIBUNWIND_SUPPORT |
26d33022 JO |
898 | /* Dwarf style */ |
899 | } else if (!strncmp(name, "dwarf", sizeof("dwarf"))) { | |
61eaa3be ACM |
900 | const unsigned long default_stack_dump_size = 8192; |
901 | ||
26d33022 JO |
902 | ret = 0; |
903 | rec->opts.call_graph = CALLCHAIN_DWARF; | |
904 | rec->opts.stack_dump_size = default_stack_dump_size; | |
905 | ||
906 | tok = strtok_r(NULL, ",", &saveptr); | |
907 | if (tok) { | |
908 | unsigned long size = 0; | |
909 | ||
910 | ret = get_stack_size(tok, &size); | |
911 | rec->opts.stack_dump_size = size; | |
912 | } | |
913 | ||
914 | if (!ret) | |
915 | pr_debug("callchain: stack dump size %d\n", | |
916 | rec->opts.stack_dump_size); | |
95485b1c | 917 | #endif /* LIBUNWIND_SUPPORT */ |
26d33022 JO |
918 | } else { |
919 | pr_err("callchain: Unknown -g option " | |
920 | "value: %s\n", arg); | |
921 | break; | |
922 | } | |
923 | ||
924 | } while (0); | |
925 | ||
926 | free(buf); | |
927 | ||
928 | if (!ret) | |
929 | pr_debug("callchain: type %d\n", rec->opts.call_graph); | |
930 | ||
931 | return ret; | |
932 | } | |
933 | ||
0e9b20b8 | 934 | static const char * const record_usage[] = { |
9e096753 MG |
935 | "perf record [<options>] [<command>]", |
936 | "perf record [<options>] -- <command> [<options>]", | |
0e9b20b8 IM |
937 | NULL |
938 | }; | |
939 | ||
d20deb64 ACM |
940 | /* |
941 | * XXX Ideally would be local to cmd_record() and passed to a perf_record__new | |
942 | * because we need to have access to it in perf_record__exit, that is called | |
943 | * after cmd_record() exits, but since record_options need to be accessible to | |
944 | * builtin-script, leave it here. | |
945 | * | |
946 | * At least we don't ouch it in all the other functions here directly. | |
947 | * | |
948 | * Just say no to tons of global variables, sigh. | |
949 | */ | |
950 | static struct perf_record record = { | |
951 | .opts = { | |
d20deb64 ACM |
952 | .mmap_pages = UINT_MAX, |
953 | .user_freq = UINT_MAX, | |
954 | .user_interval = ULLONG_MAX, | |
447a6013 | 955 | .freq = 4000, |
d1cb9fce NK |
956 | .target = { |
957 | .uses_mmap = true, | |
958 | }, | |
d20deb64 ACM |
959 | }, |
960 | .write_mode = WRITE_FORCE, | |
961 | .file_new = true, | |
962 | }; | |
7865e817 | 963 | |
61eaa3be ACM |
964 | #define CALLCHAIN_HELP "do call-graph (stack chain/backtrace) recording: " |
965 | ||
966 | #ifdef LIBUNWIND_SUPPORT | |
967 | static const char callchain_help[] = CALLCHAIN_HELP "[fp] dwarf"; | |
968 | #else | |
969 | static const char callchain_help[] = CALLCHAIN_HELP "[fp]"; | |
970 | #endif | |
971 | ||
d20deb64 ACM |
972 | /* |
973 | * XXX Will stay a global variable till we fix builtin-script.c to stop messing | |
974 | * with it and switch to use the library functions in perf_evlist that came | |
975 | * from builtin-record.c, i.e. use perf_record_opts, | |
976 | * perf_evlist__prepare_workload, etc instead of fork+exec'in 'perf record', | |
977 | * using pipes, etc. | |
978 | */ | |
bca647aa | 979 | const struct option record_options[] = { |
d20deb64 | 980 | OPT_CALLBACK('e', "event", &record.evlist, "event", |
86847b62 | 981 | "event selector. use 'perf list' to list available events", |
f120f9d5 | 982 | parse_events_option), |
d20deb64 | 983 | OPT_CALLBACK(0, "filter", &record.evlist, "filter", |
c171b552 | 984 | "event filter", parse_filter), |
bea03405 | 985 | OPT_STRING('p', "pid", &record.opts.target.pid, "pid", |
d6d901c2 | 986 | "record events on existing process id"), |
bea03405 | 987 | OPT_STRING('t', "tid", &record.opts.target.tid, "tid", |
d6d901c2 | 988 | "record events on existing thread id"), |
d20deb64 | 989 | OPT_INTEGER('r', "realtime", &record.realtime_prio, |
0e9b20b8 | 990 | "collect data with this RT SCHED_FIFO priority"), |
d20deb64 | 991 | OPT_BOOLEAN('D', "no-delay", &record.opts.no_delay, |
acac03fa | 992 | "collect data without buffering"), |
d20deb64 | 993 | OPT_BOOLEAN('R', "raw-samples", &record.opts.raw_samples, |
daac07b2 | 994 | "collect raw sample records from all opened counters"), |
bea03405 | 995 | OPT_BOOLEAN('a', "all-cpus", &record.opts.target.system_wide, |
0e9b20b8 | 996 | "system-wide collection from all CPUs"), |
d20deb64 | 997 | OPT_BOOLEAN('A', "append", &record.append_file, |
abaff32a | 998 | "append to the output file to do incremental profiling"), |
bea03405 | 999 | OPT_STRING('C', "cpu", &record.opts.target.cpu_list, "cpu", |
c45c6ea2 | 1000 | "list of cpus to monitor"), |
d20deb64 | 1001 | OPT_BOOLEAN('f', "force", &record.force, |
7865e817 | 1002 | "overwrite existing data file (deprecated)"), |
d20deb64 ACM |
1003 | OPT_U64('c', "count", &record.opts.user_interval, "event period to sample"), |
1004 | OPT_STRING('o', "output", &record.output_name, "file", | |
abaff32a | 1005 | "output file name"), |
d20deb64 | 1006 | OPT_BOOLEAN('i', "no-inherit", &record.opts.no_inherit, |
2e6cdf99 | 1007 | "child tasks do not inherit counters"), |
d20deb64 ACM |
1008 | OPT_UINTEGER('F', "freq", &record.opts.user_freq, "profile at this frequency"), |
1009 | OPT_UINTEGER('m', "mmap-pages", &record.opts.mmap_pages, | |
01c2d99b | 1010 | "number of mmap data pages"), |
d20deb64 | 1011 | OPT_BOOLEAN(0, "group", &record.opts.group, |
43bece79 | 1012 | "put the counters into a counter group"), |
26d33022 JO |
1013 | OPT_CALLBACK_DEFAULT('g', "call-graph", &record, "mode[,dump_size]", |
1014 | callchain_help, &parse_callchain_opt, | |
1015 | "fp"), | |
c0555642 | 1016 | OPT_INCR('v', "verbose", &verbose, |
3da297a6 | 1017 | "be more verbose (show counter open errors, etc)"), |
b44308f5 | 1018 | OPT_BOOLEAN('q', "quiet", &quiet, "don't print any message"), |
d20deb64 | 1019 | OPT_BOOLEAN('s', "stat", &record.opts.inherit_stat, |
649c48a9 | 1020 | "per thread counts"), |
d20deb64 | 1021 | OPT_BOOLEAN('d', "data", &record.opts.sample_address, |
4bba828d | 1022 | "Sample addresses"), |
d20deb64 | 1023 | OPT_BOOLEAN('T', "timestamp", &record.opts.sample_time, "Sample timestamps"), |
3e76ac78 | 1024 | OPT_BOOLEAN('P', "period", &record.opts.period, "Sample period"), |
d20deb64 | 1025 | OPT_BOOLEAN('n', "no-samples", &record.opts.no_samples, |
649c48a9 | 1026 | "don't sample"), |
d20deb64 | 1027 | OPT_BOOLEAN('N', "no-buildid-cache", &record.no_buildid_cache, |
a1ac1d3c | 1028 | "do not update the buildid cache"), |
d20deb64 | 1029 | OPT_BOOLEAN('B', "no-buildid", &record.no_buildid, |
baa2f6ce | 1030 | "do not collect buildids in perf.data"), |
d20deb64 | 1031 | OPT_CALLBACK('G', "cgroup", &record.evlist, "name", |
023695d9 SE |
1032 | "monitor event in cgroup name only", |
1033 | parse_cgroups), | |
bea03405 NK |
1034 | OPT_STRING('u', "uid", &record.opts.target.uid_str, "user", |
1035 | "user to profile"), | |
a5aabdac SE |
1036 | |
1037 | OPT_CALLBACK_NOOPT('b', "branch-any", &record.opts.branch_stack, | |
1038 | "branch any", "sample any taken branches", | |
1039 | parse_branch_stack), | |
1040 | ||
1041 | OPT_CALLBACK('j', "branch-filter", &record.opts.branch_stack, | |
1042 | "branch filter mask", "branch stack filter modes", | |
bdfebd84 | 1043 | parse_branch_stack), |
0e9b20b8 IM |
1044 | OPT_END() |
1045 | }; | |
1046 | ||
1d037ca1 | 1047 | int cmd_record(int argc, const char **argv, const char *prefix __maybe_unused) |
0e9b20b8 | 1048 | { |
69aad6f1 ACM |
1049 | int err = -ENOMEM; |
1050 | struct perf_evsel *pos; | |
d20deb64 ACM |
1051 | struct perf_evlist *evsel_list; |
1052 | struct perf_record *rec = &record; | |
16ad2ffb | 1053 | char errbuf[BUFSIZ]; |
0e9b20b8 | 1054 | |
7e2ed097 | 1055 | evsel_list = perf_evlist__new(NULL, NULL); |
361c99a6 ACM |
1056 | if (evsel_list == NULL) |
1057 | return -ENOMEM; | |
1058 | ||
d20deb64 ACM |
1059 | rec->evlist = evsel_list; |
1060 | ||
bca647aa | 1061 | argc = parse_options(argc, argv, record_options, record_usage, |
655000e7 | 1062 | PARSE_OPT_STOP_AT_NON_OPTION); |
d67356e7 | 1063 | if (!argc && perf_target__none(&rec->opts.target)) |
bca647aa | 1064 | usage_with_options(record_usage, record_options); |
0e9b20b8 | 1065 | |
d20deb64 | 1066 | if (rec->force && rec->append_file) { |
3780f488 NK |
1067 | ui__error("Can't overwrite and append at the same time." |
1068 | " You need to choose between -f and -A"); | |
bca647aa | 1069 | usage_with_options(record_usage, record_options); |
d20deb64 ACM |
1070 | } else if (rec->append_file) { |
1071 | rec->write_mode = WRITE_APPEND; | |
7865e817 | 1072 | } else { |
d20deb64 | 1073 | rec->write_mode = WRITE_FORCE; |
7865e817 FW |
1074 | } |
1075 | ||
bea03405 | 1076 | if (nr_cgroups && !rec->opts.target.system_wide) { |
3780f488 NK |
1077 | ui__error("cgroup monitoring only available in" |
1078 | " system-wide mode\n"); | |
023695d9 SE |
1079 | usage_with_options(record_usage, record_options); |
1080 | } | |
1081 | ||
655000e7 | 1082 | symbol__init(); |
baa2f6ce | 1083 | |
ec80fde7 | 1084 | if (symbol_conf.kptr_restrict) |
646aaea6 ACM |
1085 | pr_warning( |
1086 | "WARNING: Kernel address maps (/proc/{kallsyms,modules}) are restricted,\n" | |
1087 | "check /proc/sys/kernel/kptr_restrict.\n\n" | |
1088 | "Samples in kernel functions may not be resolved if a suitable vmlinux\n" | |
1089 | "file is not found in the buildid cache or in the vmlinux path.\n\n" | |
1090 | "Samples in kernel modules won't be resolved at all.\n\n" | |
1091 | "If some relocation was applied (e.g. kexec) symbols may be misresolved\n" | |
1092 | "even with a suitable vmlinux or kallsyms file.\n\n"); | |
ec80fde7 | 1093 | |
d20deb64 | 1094 | if (rec->no_buildid_cache || rec->no_buildid) |
a1ac1d3c | 1095 | disable_buildid_cache(); |
655000e7 | 1096 | |
361c99a6 ACM |
1097 | if (evsel_list->nr_entries == 0 && |
1098 | perf_evlist__add_default(evsel_list) < 0) { | |
69aad6f1 ACM |
1099 | pr_err("Not enough memory for event selector list\n"); |
1100 | goto out_symbol_exit; | |
bbd36e5e | 1101 | } |
0e9b20b8 | 1102 | |
16ad2ffb NK |
1103 | err = perf_target__validate(&rec->opts.target); |
1104 | if (err) { | |
1105 | perf_target__strerror(&rec->opts.target, err, errbuf, BUFSIZ); | |
1106 | ui__warning("%s", errbuf); | |
1107 | } | |
1108 | ||
1109 | err = perf_target__parse_uid(&rec->opts.target); | |
1110 | if (err) { | |
1111 | int saved_errno = errno; | |
4bd0f2d2 | 1112 | |
16ad2ffb | 1113 | perf_target__strerror(&rec->opts.target, err, errbuf, BUFSIZ); |
3780f488 | 1114 | ui__error("%s", errbuf); |
16ad2ffb NK |
1115 | |
1116 | err = -saved_errno; | |
0d37aa34 | 1117 | goto out_free_fd; |
16ad2ffb | 1118 | } |
0d37aa34 | 1119 | |
16ad2ffb | 1120 | err = -ENOMEM; |
b809ac10 | 1121 | if (perf_evlist__create_maps(evsel_list, &rec->opts.target) < 0) |
dd7927f4 | 1122 | usage_with_options(record_usage, record_options); |
69aad6f1 | 1123 | |
361c99a6 | 1124 | list_for_each_entry(pos, &evsel_list->entries, node) { |
7289f83c | 1125 | if (perf_header__push_event(pos->attr.config, perf_evsel__name(pos))) |
ad7f4e3f | 1126 | goto out_free_fd; |
d6d901c2 | 1127 | } |
5c581041 | 1128 | |
d20deb64 ACM |
1129 | if (rec->opts.user_interval != ULLONG_MAX) |
1130 | rec->opts.default_interval = rec->opts.user_interval; | |
1131 | if (rec->opts.user_freq != UINT_MAX) | |
1132 | rec->opts.freq = rec->opts.user_freq; | |
f9212819 | 1133 | |
7e4ff9e3 MG |
1134 | /* |
1135 | * User specified count overrides default frequency. | |
1136 | */ | |
d20deb64 ACM |
1137 | if (rec->opts.default_interval) |
1138 | rec->opts.freq = 0; | |
1139 | else if (rec->opts.freq) { | |
1140 | rec->opts.default_interval = rec->opts.freq; | |
7e4ff9e3 | 1141 | } else { |
3780f488 | 1142 | ui__error("frequency and count are zero, aborting\n"); |
39d17dac | 1143 | err = -EINVAL; |
5c581041 | 1144 | goto out_free_fd; |
7e4ff9e3 MG |
1145 | } |
1146 | ||
d20deb64 | 1147 | err = __cmd_record(&record, argc, argv); |
39d17dac | 1148 | out_free_fd: |
7e2ed097 | 1149 | perf_evlist__delete_maps(evsel_list); |
d65a458b ACM |
1150 | out_symbol_exit: |
1151 | symbol__exit(); | |
39d17dac | 1152 | return err; |
0e9b20b8 | 1153 | } |