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 | |
26d33022 JO |
34 | #define CALLCHAIN_HELP "do call-graph (stack chain/backtrace) recording: " |
35 | ||
36 | #ifdef NO_LIBUNWIND_SUPPORT | |
37 | static char callchain_help[] = CALLCHAIN_HELP "[fp]"; | |
38 | #else | |
39 | static unsigned long default_stack_dump_size = 8192; | |
40 | static char callchain_help[] = CALLCHAIN_HELP "[fp] dwarf"; | |
41 | #endif | |
42 | ||
7865e817 FW |
43 | enum write_mode_t { |
44 | WRITE_FORCE, | |
45 | WRITE_APPEND | |
46 | }; | |
47 | ||
d20deb64 | 48 | struct perf_record { |
45694aa7 | 49 | struct perf_tool tool; |
d20deb64 ACM |
50 | struct perf_record_opts opts; |
51 | u64 bytes_written; | |
52 | const char *output_name; | |
53 | struct perf_evlist *evlist; | |
54 | struct perf_session *session; | |
55 | const char *progname; | |
56 | int output; | |
57 | unsigned int page_size; | |
58 | int realtime_prio; | |
59 | enum write_mode_t write_mode; | |
60 | bool no_buildid; | |
61 | bool no_buildid_cache; | |
62 | bool force; | |
63 | bool file_new; | |
64 | bool append_file; | |
65 | long samples; | |
66 | off_t post_processing_offset; | |
0f82ebc4 | 67 | }; |
a21ca2ca | 68 | |
d20deb64 | 69 | static void advance_output(struct perf_record *rec, size_t size) |
9215545e | 70 | { |
d20deb64 | 71 | rec->bytes_written += size; |
9215545e TZ |
72 | } |
73 | ||
d20deb64 | 74 | static void write_output(struct perf_record *rec, void *buf, size_t size) |
f5970550 PZ |
75 | { |
76 | while (size) { | |
d20deb64 | 77 | int ret = write(rec->output, buf, size); |
f5970550 PZ |
78 | |
79 | if (ret < 0) | |
80 | die("failed to write"); | |
81 | ||
82 | size -= ret; | |
83 | buf += ret; | |
84 | ||
d20deb64 | 85 | rec->bytes_written += ret; |
f5970550 PZ |
86 | } |
87 | } | |
88 | ||
45694aa7 | 89 | static int process_synthesized_event(struct perf_tool *tool, |
d20deb64 | 90 | union perf_event *event, |
8d50e5b4 | 91 | struct perf_sample *sample __used, |
743eb868 | 92 | struct machine *machine __used) |
234fbbf5 | 93 | { |
45694aa7 | 94 | struct perf_record *rec = container_of(tool, struct perf_record, tool); |
d20deb64 | 95 | write_output(rec, event, event->header.size); |
234fbbf5 ACM |
96 | return 0; |
97 | } | |
98 | ||
d20deb64 ACM |
99 | static void perf_record__mmap_read(struct perf_record *rec, |
100 | struct perf_mmap *md) | |
de9ac07b | 101 | { |
744bd8aa | 102 | unsigned int head = perf_mmap__read_head(md); |
de9ac07b | 103 | unsigned int old = md->prev; |
d20deb64 | 104 | unsigned char *data = md->base + rec->page_size; |
de9ac07b PZ |
105 | unsigned long size; |
106 | void *buf; | |
de9ac07b | 107 | |
dc82009a ACM |
108 | if (old == head) |
109 | return; | |
110 | ||
d20deb64 | 111 | rec->samples++; |
de9ac07b PZ |
112 | |
113 | size = head - old; | |
114 | ||
115 | if ((old & md->mask) + size != (head & md->mask)) { | |
116 | buf = &data[old & md->mask]; | |
117 | size = md->mask + 1 - (old & md->mask); | |
118 | old += size; | |
021e9f47 | 119 | |
d20deb64 | 120 | write_output(rec, buf, size); |
de9ac07b PZ |
121 | } |
122 | ||
123 | buf = &data[old & md->mask]; | |
124 | size = head - old; | |
125 | old += size; | |
021e9f47 | 126 | |
d20deb64 | 127 | write_output(rec, buf, size); |
de9ac07b PZ |
128 | |
129 | md->prev = old; | |
115d2d89 | 130 | perf_mmap__write_tail(md, old); |
de9ac07b PZ |
131 | } |
132 | ||
133 | static volatile int done = 0; | |
f7b7c26e | 134 | static volatile int signr = -1; |
33e49ea7 | 135 | static volatile int child_finished = 0; |
de9ac07b | 136 | |
16c8a109 | 137 | static void sig_handler(int sig) |
de9ac07b | 138 | { |
33e49ea7 AK |
139 | if (sig == SIGCHLD) |
140 | child_finished = 1; | |
141 | ||
16c8a109 | 142 | done = 1; |
f7b7c26e PZ |
143 | signr = sig; |
144 | } | |
145 | ||
d20deb64 | 146 | static void perf_record__sig_exit(int exit_status __used, void *arg) |
f7b7c26e | 147 | { |
d20deb64 | 148 | struct perf_record *rec = arg; |
33e49ea7 AK |
149 | int status; |
150 | ||
d20deb64 | 151 | if (rec->evlist->workload.pid > 0) { |
33e49ea7 | 152 | if (!child_finished) |
d20deb64 | 153 | kill(rec->evlist->workload.pid, SIGTERM); |
33e49ea7 AK |
154 | |
155 | wait(&status); | |
156 | if (WIFSIGNALED(status)) | |
d20deb64 | 157 | psignal(WTERMSIG(status), rec->progname); |
33e49ea7 | 158 | } |
933da83a | 159 | |
18483b81 | 160 | if (signr == -1 || signr == SIGUSR1) |
f7b7c26e PZ |
161 | return; |
162 | ||
163 | signal(signr, SIG_DFL); | |
164 | kill(getpid(), signr); | |
de9ac07b PZ |
165 | } |
166 | ||
a91e5431 ACM |
167 | static bool perf_evlist__equal(struct perf_evlist *evlist, |
168 | struct perf_evlist *other) | |
169 | { | |
170 | struct perf_evsel *pos, *pair; | |
171 | ||
172 | if (evlist->nr_entries != other->nr_entries) | |
173 | return false; | |
174 | ||
175 | pair = list_entry(other->entries.next, struct perf_evsel, node); | |
176 | ||
177 | list_for_each_entry(pos, &evlist->entries, node) { | |
178 | if (memcmp(&pos->attr, &pair->attr, sizeof(pos->attr) != 0)) | |
179 | return false; | |
180 | pair = list_entry(pair->node.next, struct perf_evsel, node); | |
181 | } | |
182 | ||
183 | return true; | |
184 | } | |
185 | ||
d20deb64 | 186 | static void perf_record__open(struct perf_record *rec) |
dd7927f4 | 187 | { |
727ab04e | 188 | struct perf_evsel *pos, *first; |
d20deb64 ACM |
189 | struct perf_evlist *evlist = rec->evlist; |
190 | struct perf_session *session = rec->session; | |
191 | struct perf_record_opts *opts = &rec->opts; | |
dd7927f4 | 192 | |
727ab04e ACM |
193 | first = list_entry(evlist->entries.next, struct perf_evsel, node); |
194 | ||
d20deb64 | 195 | perf_evlist__config_attrs(evlist, opts); |
0f82ebc4 | 196 | |
dd7927f4 ACM |
197 | list_for_each_entry(pos, &evlist->entries, node) { |
198 | struct perf_event_attr *attr = &pos->attr; | |
727ab04e | 199 | struct xyarray *group_fd = NULL; |
dd7927f4 ACM |
200 | /* |
201 | * Check if parse_single_tracepoint_event has already asked for | |
202 | * PERF_SAMPLE_TIME. | |
203 | * | |
204 | * XXX this is kludgy but short term fix for problems introduced by | |
205 | * eac23d1c that broke 'perf script' by having different sample_types | |
206 | * when using multiple tracepoint events when we use a perf binary | |
207 | * that tries to use sample_id_all on an older kernel. | |
208 | * | |
209 | * We need to move counter creation to perf_session, support | |
210 | * different sample_types, etc. | |
211 | */ | |
212 | bool time_needed = attr->sample_type & PERF_SAMPLE_TIME; | |
d6d901c2 | 213 | |
d20deb64 | 214 | if (opts->group && pos != first) |
727ab04e | 215 | group_fd = first->fd; |
0c978128 ACM |
216 | fallback_missing_features: |
217 | if (opts->exclude_guest_missing) | |
218 | attr->exclude_guest = attr->exclude_host = 0; | |
dd7927f4 | 219 | retry_sample_id: |
808e1226 | 220 | attr->sample_id_all = opts->sample_id_all_missing ? 0 : 1; |
dd7927f4 | 221 | try_again: |
ed80f581 | 222 | if (perf_evsel__open(pos, evlist->cpus, evlist->threads, |
d20deb64 | 223 | opts->group, group_fd) < 0) { |
d6d901c2 ZY |
224 | int err = errno; |
225 | ||
c286c419 | 226 | if (err == EPERM || err == EACCES) { |
b8631e6e | 227 | ui__error_paranoid(); |
c286c419 | 228 | exit(EXIT_FAILURE); |
bea03405 | 229 | } else if (err == ENODEV && opts->target.cpu_list) { |
d6d901c2 ZY |
230 | die("No such device - did you specify" |
231 | " an out-of-range profile CPU?\n"); | |
0c978128 ACM |
232 | } else if (err == EINVAL) { |
233 | if (!opts->exclude_guest_missing && | |
234 | (attr->exclude_guest || attr->exclude_host)) { | |
235 | pr_debug("Old kernel, cannot exclude " | |
236 | "guest or host samples.\n"); | |
237 | opts->exclude_guest_missing = true; | |
238 | goto fallback_missing_features; | |
808e1226 | 239 | } else if (!opts->sample_id_all_missing) { |
0c978128 ACM |
240 | /* |
241 | * Old kernel, no attr->sample_id_type_all field | |
242 | */ | |
808e1226 | 243 | opts->sample_id_all_missing = true; |
0c978128 ACM |
244 | if (!opts->sample_time && !opts->raw_samples && !time_needed) |
245 | attr->sample_type &= ~PERF_SAMPLE_TIME; | |
246 | ||
247 | goto retry_sample_id; | |
248 | } | |
d6d901c2 | 249 | } |
3da297a6 | 250 | |
d6d901c2 ZY |
251 | /* |
252 | * If it's cycles then fall back to hrtimer | |
253 | * based cpu-clock-tick sw counter, which | |
028d455b DA |
254 | * is always available even if no PMU support. |
255 | * | |
256 | * PPC returns ENXIO until 2.6.37 (behavior changed | |
257 | * with commit b0a873e). | |
d6d901c2 | 258 | */ |
028d455b DA |
259 | if ((err == ENOENT || err == ENXIO) |
260 | && attr->type == PERF_TYPE_HARDWARE | |
d6d901c2 ZY |
261 | && attr->config == PERF_COUNT_HW_CPU_CYCLES) { |
262 | ||
263 | if (verbose) | |
ca6a4258 DA |
264 | ui__warning("The cycles event is not supported, " |
265 | "trying to fall back to cpu-clock-ticks\n"); | |
d6d901c2 ZY |
266 | attr->type = PERF_TYPE_SOFTWARE; |
267 | attr->config = PERF_COUNT_SW_CPU_CLOCK; | |
d1cae34d DA |
268 | if (pos->name) { |
269 | free(pos->name); | |
270 | pos->name = NULL; | |
271 | } | |
d6d901c2 ZY |
272 | goto try_again; |
273 | } | |
ca6a4258 DA |
274 | |
275 | if (err == ENOENT) { | |
3780f488 | 276 | ui__error("The %s event is not supported.\n", |
7289f83c | 277 | perf_evsel__name(pos)); |
ca6a4258 DA |
278 | exit(EXIT_FAILURE); |
279 | } | |
280 | ||
d6d901c2 | 281 | printf("\n"); |
d9cf837e | 282 | error("sys_perf_event_open() syscall returned with %d (%s). /bin/dmesg may provide additional information.\n", |
dd7927f4 | 283 | err, strerror(err)); |
bfd45118 SK |
284 | |
285 | #if defined(__i386__) || defined(__x86_64__) | |
d6d901c2 ZY |
286 | if (attr->type == PERF_TYPE_HARDWARE && err == EOPNOTSUPP) |
287 | die("No hardware sampling interrupt available." | |
288 | " No APIC? If so then you can boot the kernel" | |
289 | " with the \"lapic\" boot parameter to" | |
290 | " force-enable it.\n"); | |
bfd45118 SK |
291 | #endif |
292 | ||
d6d901c2 | 293 | die("No CONFIG_PERF_EVENTS=y kernel support configured?\n"); |
c171b552 LZ |
294 | } |
295 | } | |
a43d3f08 | 296 | |
0a102479 FW |
297 | if (perf_evlist__set_filters(evlist)) { |
298 | error("failed to set filter with %d (%s)\n", errno, | |
299 | strerror(errno)); | |
300 | exit(-1); | |
301 | } | |
302 | ||
18e60939 NE |
303 | if (perf_evlist__mmap(evlist, opts->mmap_pages, false) < 0) { |
304 | if (errno == EPERM) | |
305 | die("Permission error mapping pages.\n" | |
306 | "Consider increasing " | |
307 | "/proc/sys/kernel/perf_event_mlock_kb,\n" | |
308 | "or try again with a smaller value of -m/--mmap_pages.\n" | |
309 | "(current value: %d)\n", opts->mmap_pages); | |
41d0d933 NE |
310 | else if (!is_power_of_2(opts->mmap_pages)) |
311 | die("--mmap_pages/-m value must be a power of two."); | |
312 | ||
0a27d7f9 | 313 | die("failed to mmap with %d (%s)\n", errno, strerror(errno)); |
18e60939 | 314 | } |
0a27d7f9 | 315 | |
d20deb64 | 316 | if (rec->file_new) |
a91e5431 ACM |
317 | session->evlist = evlist; |
318 | else { | |
319 | if (!perf_evlist__equal(session->evlist, evlist)) { | |
320 | fprintf(stderr, "incompatible append\n"); | |
321 | exit(-1); | |
322 | } | |
323 | } | |
324 | ||
7b56cce2 | 325 | perf_session__set_id_hdr_size(session); |
16c8a109 PZ |
326 | } |
327 | ||
d20deb64 | 328 | static int process_buildids(struct perf_record *rec) |
6122e4e4 | 329 | { |
d20deb64 | 330 | u64 size = lseek(rec->output, 0, SEEK_CUR); |
6122e4e4 | 331 | |
9f591fd7 ACM |
332 | if (size == 0) |
333 | return 0; | |
334 | ||
d20deb64 ACM |
335 | rec->session->fd = rec->output; |
336 | return __perf_session__process_events(rec->session, rec->post_processing_offset, | |
337 | size - rec->post_processing_offset, | |
6122e4e4 ACM |
338 | size, &build_id__mark_dso_hit_ops); |
339 | } | |
340 | ||
d20deb64 | 341 | static void perf_record__exit(int status __used, void *arg) |
f5970550 | 342 | { |
d20deb64 ACM |
343 | struct perf_record *rec = arg; |
344 | ||
345 | if (!rec->opts.pipe_output) { | |
346 | rec->session->header.data_size += rec->bytes_written; | |
347 | ||
348 | if (!rec->no_buildid) | |
349 | process_buildids(rec); | |
350 | perf_session__write_header(rec->session, rec->evlist, | |
351 | rec->output, true); | |
352 | perf_session__delete(rec->session); | |
353 | perf_evlist__delete(rec->evlist); | |
d65a458b | 354 | symbol__exit(); |
c7929e47 | 355 | } |
f5970550 PZ |
356 | } |
357 | ||
8115d60c | 358 | static void perf_event__synthesize_guest_os(struct machine *machine, void *data) |
a1645ce1 ZY |
359 | { |
360 | int err; | |
45694aa7 | 361 | struct perf_tool *tool = data; |
a1645ce1 | 362 | |
23346f21 | 363 | if (machine__is_host(machine)) |
a1645ce1 ZY |
364 | return; |
365 | ||
366 | /* | |
367 | *As for guest kernel when processing subcommand record&report, | |
368 | *we arrange module mmap prior to guest kernel mmap and trigger | |
369 | *a preload dso because default guest module symbols are loaded | |
370 | *from guest kallsyms instead of /lib/modules/XXX/XXX. This | |
371 | *method is used to avoid symbol missing when the first addr is | |
372 | *in module instead of in guest kernel. | |
373 | */ | |
45694aa7 | 374 | err = perf_event__synthesize_modules(tool, process_synthesized_event, |
743eb868 | 375 | machine); |
a1645ce1 ZY |
376 | if (err < 0) |
377 | pr_err("Couldn't record guest kernel [%d]'s reference" | |
23346f21 | 378 | " relocation symbol.\n", machine->pid); |
a1645ce1 | 379 | |
a1645ce1 ZY |
380 | /* |
381 | * We use _stext for guest kernel because guest kernel's /proc/kallsyms | |
382 | * have no _text sometimes. | |
383 | */ | |
45694aa7 | 384 | err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event, |
743eb868 | 385 | machine, "_text"); |
a1645ce1 | 386 | if (err < 0) |
45694aa7 | 387 | err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event, |
743eb868 | 388 | machine, "_stext"); |
a1645ce1 ZY |
389 | if (err < 0) |
390 | pr_err("Couldn't record guest kernel [%d]'s reference" | |
23346f21 | 391 | " relocation symbol.\n", machine->pid); |
a1645ce1 ZY |
392 | } |
393 | ||
98402807 FW |
394 | static struct perf_event_header finished_round_event = { |
395 | .size = sizeof(struct perf_event_header), | |
396 | .type = PERF_RECORD_FINISHED_ROUND, | |
397 | }; | |
398 | ||
d20deb64 | 399 | static void perf_record__mmap_read_all(struct perf_record *rec) |
98402807 | 400 | { |
0e2e63dd | 401 | int i; |
98402807 | 402 | |
d20deb64 ACM |
403 | for (i = 0; i < rec->evlist->nr_mmaps; i++) { |
404 | if (rec->evlist->mmap[i].base) | |
405 | perf_record__mmap_read(rec, &rec->evlist->mmap[i]); | |
98402807 FW |
406 | } |
407 | ||
2eeaaa09 | 408 | if (perf_header__has_feat(&rec->session->header, HEADER_TRACING_DATA)) |
d20deb64 | 409 | write_output(rec, &finished_round_event, sizeof(finished_round_event)); |
98402807 FW |
410 | } |
411 | ||
d20deb64 | 412 | static int __cmd_record(struct perf_record *rec, int argc, const char **argv) |
16c8a109 | 413 | { |
abaff32a | 414 | struct stat st; |
abaff32a | 415 | int flags; |
781ba9d2 | 416 | int err, output, feat; |
8b412664 | 417 | unsigned long waking = 0; |
46be604b | 418 | const bool forks = argc > 0; |
23346f21 | 419 | struct machine *machine; |
45694aa7 | 420 | struct perf_tool *tool = &rec->tool; |
d20deb64 ACM |
421 | struct perf_record_opts *opts = &rec->opts; |
422 | struct perf_evlist *evsel_list = rec->evlist; | |
423 | const char *output_name = rec->output_name; | |
424 | struct perf_session *session; | |
de9ac07b | 425 | |
d20deb64 | 426 | rec->progname = argv[0]; |
33e49ea7 | 427 | |
d20deb64 | 428 | rec->page_size = sysconf(_SC_PAGE_SIZE); |
de9ac07b | 429 | |
d20deb64 | 430 | on_exit(perf_record__sig_exit, rec); |
f5970550 PZ |
431 | signal(SIGCHLD, sig_handler); |
432 | signal(SIGINT, sig_handler); | |
18483b81 | 433 | signal(SIGUSR1, sig_handler); |
f5970550 | 434 | |
d7065adb FBH |
435 | if (!output_name) { |
436 | if (!fstat(STDOUT_FILENO, &st) && S_ISFIFO(st.st_mode)) | |
d20deb64 | 437 | opts->pipe_output = true; |
d7065adb | 438 | else |
d20deb64 | 439 | rec->output_name = output_name = "perf.data"; |
d7065adb FBH |
440 | } |
441 | if (output_name) { | |
442 | if (!strcmp(output_name, "-")) | |
d20deb64 | 443 | opts->pipe_output = true; |
d7065adb | 444 | else if (!stat(output_name, &st) && st.st_size) { |
d20deb64 | 445 | if (rec->write_mode == WRITE_FORCE) { |
d7065adb FBH |
446 | char oldname[PATH_MAX]; |
447 | snprintf(oldname, sizeof(oldname), "%s.old", | |
448 | output_name); | |
449 | unlink(oldname); | |
450 | rename(output_name, oldname); | |
451 | } | |
d20deb64 ACM |
452 | } else if (rec->write_mode == WRITE_APPEND) { |
453 | rec->write_mode = WRITE_FORCE; | |
266e0e21 | 454 | } |
97124d5e PZ |
455 | } |
456 | ||
f887f301 | 457 | flags = O_CREAT|O_RDWR; |
d20deb64 ACM |
458 | if (rec->write_mode == WRITE_APPEND) |
459 | rec->file_new = 0; | |
abaff32a IM |
460 | else |
461 | flags |= O_TRUNC; | |
462 | ||
d20deb64 | 463 | if (opts->pipe_output) |
529870e3 TZ |
464 | output = STDOUT_FILENO; |
465 | else | |
466 | output = open(output_name, flags, S_IRUSR | S_IWUSR); | |
de9ac07b PZ |
467 | if (output < 0) { |
468 | perror("failed to create output file"); | |
469 | exit(-1); | |
470 | } | |
471 | ||
d20deb64 ACM |
472 | rec->output = output; |
473 | ||
7865e817 | 474 | session = perf_session__new(output_name, O_WRONLY, |
d20deb64 | 475 | rec->write_mode == WRITE_FORCE, false, NULL); |
94c744b6 | 476 | if (session == NULL) { |
a9a70bbc ACM |
477 | pr_err("Not enough memory for reading perf file header\n"); |
478 | return -1; | |
479 | } | |
480 | ||
d20deb64 ACM |
481 | rec->session = session; |
482 | ||
781ba9d2 RR |
483 | for (feat = HEADER_FIRST_FEATURE; feat < HEADER_LAST_FEATURE; feat++) |
484 | perf_header__set_feat(&session->header, feat); | |
485 | ||
486 | if (rec->no_buildid) | |
487 | perf_header__clear_feat(&session->header, HEADER_BUILD_ID); | |
488 | ||
489 | if (!have_tracepoints(&evsel_list->entries)) | |
2eeaaa09 | 490 | perf_header__clear_feat(&session->header, HEADER_TRACING_DATA); |
baa2f6ce | 491 | |
330aa675 SE |
492 | if (!rec->opts.branch_stack) |
493 | perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK); | |
494 | ||
d20deb64 | 495 | if (!rec->file_new) { |
a91e5431 | 496 | err = perf_session__read_header(session, output); |
4dc0a04b | 497 | if (err < 0) |
39d17dac | 498 | goto out_delete_session; |
4dc0a04b ACM |
499 | } |
500 | ||
d4db3f16 | 501 | if (forks) { |
d20deb64 | 502 | err = perf_evlist__prepare_workload(evsel_list, opts, argv); |
35b9d88e ACM |
503 | if (err < 0) { |
504 | pr_err("Couldn't run the workload!\n"); | |
505 | goto out_delete_session; | |
856e9660 | 506 | } |
856e9660 PZ |
507 | } |
508 | ||
d20deb64 | 509 | perf_record__open(rec); |
de9ac07b | 510 | |
712a4b60 | 511 | /* |
d20deb64 | 512 | * perf_session__delete(session) will be called at perf_record__exit() |
712a4b60 | 513 | */ |
d20deb64 | 514 | on_exit(perf_record__exit, rec); |
712a4b60 | 515 | |
d20deb64 | 516 | if (opts->pipe_output) { |
529870e3 TZ |
517 | err = perf_header__write_pipe(output); |
518 | if (err < 0) | |
519 | return err; | |
d20deb64 | 520 | } else if (rec->file_new) { |
a91e5431 ACM |
521 | err = perf_session__write_header(session, evsel_list, |
522 | output, false); | |
d5eed904 ACM |
523 | if (err < 0) |
524 | return err; | |
56b03f3c ACM |
525 | } |
526 | ||
d3665498 | 527 | if (!rec->no_buildid |
e20960c0 | 528 | && !perf_header__has_feat(&session->header, HEADER_BUILD_ID)) { |
d3665498 | 529 | pr_err("Couldn't generate buildids. " |
e20960c0 RR |
530 | "Use --no-buildid to profile anyway.\n"); |
531 | return -1; | |
532 | } | |
533 | ||
d20deb64 | 534 | rec->post_processing_offset = lseek(output, 0, SEEK_CUR); |
6122e4e4 | 535 | |
743eb868 ACM |
536 | machine = perf_session__find_host_machine(session); |
537 | if (!machine) { | |
538 | pr_err("Couldn't find native kernel information.\n"); | |
539 | return -1; | |
540 | } | |
541 | ||
d20deb64 | 542 | if (opts->pipe_output) { |
45694aa7 | 543 | err = perf_event__synthesize_attrs(tool, session, |
d20deb64 | 544 | process_synthesized_event); |
2c46dbb5 TZ |
545 | if (err < 0) { |
546 | pr_err("Couldn't synthesize attrs.\n"); | |
547 | return err; | |
548 | } | |
cd19a035 | 549 | |
45694aa7 | 550 | err = perf_event__synthesize_event_types(tool, process_synthesized_event, |
743eb868 | 551 | machine); |
cd19a035 TZ |
552 | if (err < 0) { |
553 | pr_err("Couldn't synthesize event_types.\n"); | |
554 | return err; | |
555 | } | |
9215545e | 556 | |
361c99a6 | 557 | if (have_tracepoints(&evsel_list->entries)) { |
63e0c771 TZ |
558 | /* |
559 | * FIXME err <= 0 here actually means that | |
560 | * there were no tracepoints so its not really | |
561 | * an error, just that we don't need to | |
562 | * synthesize anything. We really have to | |
563 | * return this more properly and also | |
564 | * propagate errors that now are calling die() | |
565 | */ | |
45694aa7 | 566 | err = perf_event__synthesize_tracing_data(tool, output, evsel_list, |
743eb868 | 567 | process_synthesized_event); |
63e0c771 TZ |
568 | if (err <= 0) { |
569 | pr_err("Couldn't record tracing data.\n"); | |
570 | return err; | |
571 | } | |
d20deb64 | 572 | advance_output(rec, err); |
63e0c771 | 573 | } |
2c46dbb5 TZ |
574 | } |
575 | ||
45694aa7 | 576 | err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event, |
743eb868 | 577 | machine, "_text"); |
70162138 | 578 | if (err < 0) |
45694aa7 | 579 | err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event, |
743eb868 | 580 | machine, "_stext"); |
c1a3a4b9 ACM |
581 | if (err < 0) |
582 | pr_err("Couldn't record kernel reference relocation symbol\n" | |
583 | "Symbol resolution may be skewed if relocation was used (e.g. kexec).\n" | |
584 | "Check /proc/kallsyms permission or run as root.\n"); | |
b7cece76 | 585 | |
45694aa7 | 586 | err = perf_event__synthesize_modules(tool, process_synthesized_event, |
743eb868 | 587 | machine); |
c1a3a4b9 ACM |
588 | if (err < 0) |
589 | pr_err("Couldn't record kernel module information.\n" | |
590 | "Symbol resolution may be skewed if relocation was used (e.g. kexec).\n" | |
591 | "Check /proc/modules permission or run as root.\n"); | |
592 | ||
a1645ce1 | 593 | if (perf_guest) |
45694aa7 | 594 | perf_session__process_machines(session, tool, |
8115d60c | 595 | perf_event__synthesize_guest_os); |
7c6a1c65 | 596 | |
bea03405 | 597 | if (!opts->target.system_wide) |
45694aa7 | 598 | perf_event__synthesize_thread_map(tool, evsel_list->threads, |
7c940c18 | 599 | process_synthesized_event, |
743eb868 | 600 | machine); |
234fbbf5 | 601 | else |
45694aa7 | 602 | perf_event__synthesize_threads(tool, process_synthesized_event, |
743eb868 | 603 | machine); |
7c6a1c65 | 604 | |
d20deb64 | 605 | if (rec->realtime_prio) { |
de9ac07b PZ |
606 | struct sched_param param; |
607 | ||
d20deb64 | 608 | param.sched_priority = rec->realtime_prio; |
de9ac07b | 609 | if (sched_setscheduler(0, SCHED_FIFO, ¶m)) { |
6beba7ad | 610 | pr_err("Could not set realtime priority.\n"); |
de9ac07b PZ |
611 | exit(-1); |
612 | } | |
613 | } | |
614 | ||
764e16a3 DA |
615 | perf_evlist__enable(evsel_list); |
616 | ||
856e9660 PZ |
617 | /* |
618 | * Let the child rip | |
619 | */ | |
d4db3f16 | 620 | if (forks) |
35b9d88e | 621 | perf_evlist__start_workload(evsel_list); |
856e9660 | 622 | |
649c48a9 | 623 | for (;;) { |
d20deb64 | 624 | int hits = rec->samples; |
de9ac07b | 625 | |
d20deb64 | 626 | perf_record__mmap_read_all(rec); |
de9ac07b | 627 | |
d20deb64 | 628 | if (hits == rec->samples) { |
649c48a9 PZ |
629 | if (done) |
630 | break; | |
5c581041 | 631 | err = poll(evsel_list->pollfd, evsel_list->nr_fds, -1); |
8b412664 PZ |
632 | waking++; |
633 | } | |
634 | ||
4152ab37 ACM |
635 | if (done) |
636 | perf_evlist__disable(evsel_list); | |
de9ac07b PZ |
637 | } |
638 | ||
18483b81 | 639 | if (quiet || signr == SIGUSR1) |
b44308f5 ACM |
640 | return 0; |
641 | ||
8b412664 PZ |
642 | fprintf(stderr, "[ perf record: Woken up %ld times to write data ]\n", waking); |
643 | ||
021e9f47 IM |
644 | /* |
645 | * Approximate RIP event size: 24 bytes. | |
646 | */ | |
647 | fprintf(stderr, | |
9486aa38 | 648 | "[ perf record: Captured and wrote %.3f MB %s (~%" PRIu64 " samples) ]\n", |
d20deb64 | 649 | (double)rec->bytes_written / 1024.0 / 1024.0, |
021e9f47 | 650 | output_name, |
d20deb64 | 651 | rec->bytes_written / 24); |
addc2785 | 652 | |
de9ac07b | 653 | return 0; |
39d17dac ACM |
654 | |
655 | out_delete_session: | |
656 | perf_session__delete(session); | |
657 | return err; | |
de9ac07b | 658 | } |
0e9b20b8 | 659 | |
bdfebd84 RAV |
660 | #define BRANCH_OPT(n, m) \ |
661 | { .name = n, .mode = (m) } | |
662 | ||
663 | #define BRANCH_END { .name = NULL } | |
664 | ||
665 | struct branch_mode { | |
666 | const char *name; | |
667 | int mode; | |
668 | }; | |
669 | ||
670 | static const struct branch_mode branch_modes[] = { | |
671 | BRANCH_OPT("u", PERF_SAMPLE_BRANCH_USER), | |
672 | BRANCH_OPT("k", PERF_SAMPLE_BRANCH_KERNEL), | |
673 | BRANCH_OPT("hv", PERF_SAMPLE_BRANCH_HV), | |
674 | BRANCH_OPT("any", PERF_SAMPLE_BRANCH_ANY), | |
675 | BRANCH_OPT("any_call", PERF_SAMPLE_BRANCH_ANY_CALL), | |
676 | BRANCH_OPT("any_ret", PERF_SAMPLE_BRANCH_ANY_RETURN), | |
677 | BRANCH_OPT("ind_call", PERF_SAMPLE_BRANCH_IND_CALL), | |
678 | BRANCH_END | |
679 | }; | |
680 | ||
681 | static int | |
a5aabdac | 682 | parse_branch_stack(const struct option *opt, const char *str, int unset) |
bdfebd84 RAV |
683 | { |
684 | #define ONLY_PLM \ | |
685 | (PERF_SAMPLE_BRANCH_USER |\ | |
686 | PERF_SAMPLE_BRANCH_KERNEL |\ | |
687 | PERF_SAMPLE_BRANCH_HV) | |
688 | ||
689 | uint64_t *mode = (uint64_t *)opt->value; | |
690 | const struct branch_mode *br; | |
a5aabdac | 691 | char *s, *os = NULL, *p; |
bdfebd84 RAV |
692 | int ret = -1; |
693 | ||
a5aabdac SE |
694 | if (unset) |
695 | return 0; | |
bdfebd84 | 696 | |
a5aabdac SE |
697 | /* |
698 | * cannot set it twice, -b + --branch-filter for instance | |
699 | */ | |
700 | if (*mode) | |
bdfebd84 RAV |
701 | return -1; |
702 | ||
a5aabdac SE |
703 | /* str may be NULL in case no arg is passed to -b */ |
704 | if (str) { | |
705 | /* because str is read-only */ | |
706 | s = os = strdup(str); | |
707 | if (!s) | |
708 | return -1; | |
709 | ||
710 | for (;;) { | |
711 | p = strchr(s, ','); | |
712 | if (p) | |
713 | *p = '\0'; | |
714 | ||
715 | for (br = branch_modes; br->name; br++) { | |
716 | if (!strcasecmp(s, br->name)) | |
717 | break; | |
718 | } | |
719 | if (!br->name) { | |
720 | ui__warning("unknown branch filter %s," | |
721 | " check man page\n", s); | |
722 | goto error; | |
723 | } | |
bdfebd84 | 724 | |
a5aabdac | 725 | *mode |= br->mode; |
bdfebd84 | 726 | |
a5aabdac SE |
727 | if (!p) |
728 | break; | |
bdfebd84 | 729 | |
a5aabdac SE |
730 | s = p + 1; |
731 | } | |
bdfebd84 RAV |
732 | } |
733 | ret = 0; | |
734 | ||
a5aabdac | 735 | /* default to any branch */ |
bdfebd84 | 736 | if ((*mode & ~ONLY_PLM) == 0) { |
a5aabdac | 737 | *mode = PERF_SAMPLE_BRANCH_ANY; |
bdfebd84 RAV |
738 | } |
739 | error: | |
740 | free(os); | |
741 | return ret; | |
742 | } | |
743 | ||
26d33022 JO |
744 | #ifndef NO_LIBUNWIND_SUPPORT |
745 | static int get_stack_size(char *str, unsigned long *_size) | |
746 | { | |
747 | char *endptr; | |
748 | unsigned long size; | |
749 | unsigned long max_size = round_down(USHRT_MAX, sizeof(u64)); | |
750 | ||
751 | size = strtoul(str, &endptr, 0); | |
752 | ||
753 | do { | |
754 | if (*endptr) | |
755 | break; | |
756 | ||
757 | size = round_up(size, sizeof(u64)); | |
758 | if (!size || size > max_size) | |
759 | break; | |
760 | ||
761 | *_size = size; | |
762 | return 0; | |
763 | ||
764 | } while (0); | |
765 | ||
766 | pr_err("callchain: Incorrect stack dump size (max %ld): %s\n", | |
767 | max_size, str); | |
768 | return -1; | |
769 | } | |
770 | #endif /* !NO_LIBUNWIND_SUPPORT */ | |
771 | ||
772 | static int | |
773 | parse_callchain_opt(const struct option *opt __used, const char *arg, | |
774 | int unset) | |
775 | { | |
776 | struct perf_record *rec = (struct perf_record *)opt->value; | |
777 | char *tok, *name, *saveptr = NULL; | |
778 | char *buf; | |
779 | int ret = -1; | |
780 | ||
781 | /* --no-call-graph */ | |
782 | if (unset) | |
783 | return 0; | |
784 | ||
785 | /* We specified default option if none is provided. */ | |
786 | BUG_ON(!arg); | |
787 | ||
788 | /* We need buffer that we know we can write to. */ | |
789 | buf = malloc(strlen(arg) + 1); | |
790 | if (!buf) | |
791 | return -ENOMEM; | |
792 | ||
793 | strcpy(buf, arg); | |
794 | ||
795 | tok = strtok_r((char *)buf, ",", &saveptr); | |
796 | name = tok ? : (char *)buf; | |
797 | ||
798 | do { | |
799 | /* Framepointer style */ | |
800 | if (!strncmp(name, "fp", sizeof("fp"))) { | |
801 | if (!strtok_r(NULL, ",", &saveptr)) { | |
802 | rec->opts.call_graph = CALLCHAIN_FP; | |
803 | ret = 0; | |
804 | } else | |
805 | pr_err("callchain: No more arguments " | |
806 | "needed for -g fp\n"); | |
807 | break; | |
808 | ||
809 | #ifndef NO_LIBUNWIND_SUPPORT | |
810 | /* Dwarf style */ | |
811 | } else if (!strncmp(name, "dwarf", sizeof("dwarf"))) { | |
812 | ret = 0; | |
813 | rec->opts.call_graph = CALLCHAIN_DWARF; | |
814 | rec->opts.stack_dump_size = default_stack_dump_size; | |
815 | ||
816 | tok = strtok_r(NULL, ",", &saveptr); | |
817 | if (tok) { | |
818 | unsigned long size = 0; | |
819 | ||
820 | ret = get_stack_size(tok, &size); | |
821 | rec->opts.stack_dump_size = size; | |
822 | } | |
823 | ||
824 | if (!ret) | |
825 | pr_debug("callchain: stack dump size %d\n", | |
826 | rec->opts.stack_dump_size); | |
827 | #endif /* !NO_LIBUNWIND_SUPPORT */ | |
828 | } else { | |
829 | pr_err("callchain: Unknown -g option " | |
830 | "value: %s\n", arg); | |
831 | break; | |
832 | } | |
833 | ||
834 | } while (0); | |
835 | ||
836 | free(buf); | |
837 | ||
838 | if (!ret) | |
839 | pr_debug("callchain: type %d\n", rec->opts.call_graph); | |
840 | ||
841 | return ret; | |
842 | } | |
843 | ||
0e9b20b8 | 844 | static const char * const record_usage[] = { |
9e096753 MG |
845 | "perf record [<options>] [<command>]", |
846 | "perf record [<options>] -- <command> [<options>]", | |
0e9b20b8 IM |
847 | NULL |
848 | }; | |
849 | ||
d20deb64 ACM |
850 | /* |
851 | * XXX Ideally would be local to cmd_record() and passed to a perf_record__new | |
852 | * because we need to have access to it in perf_record__exit, that is called | |
853 | * after cmd_record() exits, but since record_options need to be accessible to | |
854 | * builtin-script, leave it here. | |
855 | * | |
856 | * At least we don't ouch it in all the other functions here directly. | |
857 | * | |
858 | * Just say no to tons of global variables, sigh. | |
859 | */ | |
860 | static struct perf_record record = { | |
861 | .opts = { | |
d20deb64 ACM |
862 | .mmap_pages = UINT_MAX, |
863 | .user_freq = UINT_MAX, | |
864 | .user_interval = ULLONG_MAX, | |
447a6013 | 865 | .freq = 4000, |
d1cb9fce NK |
866 | .target = { |
867 | .uses_mmap = true, | |
868 | }, | |
d20deb64 ACM |
869 | }, |
870 | .write_mode = WRITE_FORCE, | |
871 | .file_new = true, | |
872 | }; | |
7865e817 | 873 | |
d20deb64 ACM |
874 | /* |
875 | * XXX Will stay a global variable till we fix builtin-script.c to stop messing | |
876 | * with it and switch to use the library functions in perf_evlist that came | |
877 | * from builtin-record.c, i.e. use perf_record_opts, | |
878 | * perf_evlist__prepare_workload, etc instead of fork+exec'in 'perf record', | |
879 | * using pipes, etc. | |
880 | */ | |
bca647aa | 881 | const struct option record_options[] = { |
d20deb64 | 882 | OPT_CALLBACK('e', "event", &record.evlist, "event", |
86847b62 | 883 | "event selector. use 'perf list' to list available events", |
f120f9d5 | 884 | parse_events_option), |
d20deb64 | 885 | OPT_CALLBACK(0, "filter", &record.evlist, "filter", |
c171b552 | 886 | "event filter", parse_filter), |
bea03405 | 887 | OPT_STRING('p', "pid", &record.opts.target.pid, "pid", |
d6d901c2 | 888 | "record events on existing process id"), |
bea03405 | 889 | OPT_STRING('t', "tid", &record.opts.target.tid, "tid", |
d6d901c2 | 890 | "record events on existing thread id"), |
d20deb64 | 891 | OPT_INTEGER('r', "realtime", &record.realtime_prio, |
0e9b20b8 | 892 | "collect data with this RT SCHED_FIFO priority"), |
d20deb64 | 893 | OPT_BOOLEAN('D', "no-delay", &record.opts.no_delay, |
acac03fa | 894 | "collect data without buffering"), |
d20deb64 | 895 | OPT_BOOLEAN('R', "raw-samples", &record.opts.raw_samples, |
daac07b2 | 896 | "collect raw sample records from all opened counters"), |
bea03405 | 897 | OPT_BOOLEAN('a', "all-cpus", &record.opts.target.system_wide, |
0e9b20b8 | 898 | "system-wide collection from all CPUs"), |
d20deb64 | 899 | OPT_BOOLEAN('A', "append", &record.append_file, |
abaff32a | 900 | "append to the output file to do incremental profiling"), |
bea03405 | 901 | OPT_STRING('C', "cpu", &record.opts.target.cpu_list, "cpu", |
c45c6ea2 | 902 | "list of cpus to monitor"), |
d20deb64 | 903 | OPT_BOOLEAN('f', "force", &record.force, |
7865e817 | 904 | "overwrite existing data file (deprecated)"), |
d20deb64 ACM |
905 | OPT_U64('c', "count", &record.opts.user_interval, "event period to sample"), |
906 | OPT_STRING('o', "output", &record.output_name, "file", | |
abaff32a | 907 | "output file name"), |
d20deb64 | 908 | OPT_BOOLEAN('i', "no-inherit", &record.opts.no_inherit, |
2e6cdf99 | 909 | "child tasks do not inherit counters"), |
d20deb64 ACM |
910 | OPT_UINTEGER('F', "freq", &record.opts.user_freq, "profile at this frequency"), |
911 | OPT_UINTEGER('m', "mmap-pages", &record.opts.mmap_pages, | |
01c2d99b | 912 | "number of mmap data pages"), |
d20deb64 | 913 | OPT_BOOLEAN(0, "group", &record.opts.group, |
43bece79 | 914 | "put the counters into a counter group"), |
26d33022 JO |
915 | OPT_CALLBACK_DEFAULT('g', "call-graph", &record, "mode[,dump_size]", |
916 | callchain_help, &parse_callchain_opt, | |
917 | "fp"), | |
c0555642 | 918 | OPT_INCR('v', "verbose", &verbose, |
3da297a6 | 919 | "be more verbose (show counter open errors, etc)"), |
b44308f5 | 920 | OPT_BOOLEAN('q', "quiet", &quiet, "don't print any message"), |
d20deb64 | 921 | OPT_BOOLEAN('s', "stat", &record.opts.inherit_stat, |
649c48a9 | 922 | "per thread counts"), |
d20deb64 | 923 | OPT_BOOLEAN('d', "data", &record.opts.sample_address, |
4bba828d | 924 | "Sample addresses"), |
d20deb64 | 925 | OPT_BOOLEAN('T', "timestamp", &record.opts.sample_time, "Sample timestamps"), |
3e76ac78 | 926 | OPT_BOOLEAN('P', "period", &record.opts.period, "Sample period"), |
d20deb64 | 927 | OPT_BOOLEAN('n', "no-samples", &record.opts.no_samples, |
649c48a9 | 928 | "don't sample"), |
d20deb64 | 929 | OPT_BOOLEAN('N', "no-buildid-cache", &record.no_buildid_cache, |
a1ac1d3c | 930 | "do not update the buildid cache"), |
d20deb64 | 931 | OPT_BOOLEAN('B', "no-buildid", &record.no_buildid, |
baa2f6ce | 932 | "do not collect buildids in perf.data"), |
d20deb64 | 933 | OPT_CALLBACK('G', "cgroup", &record.evlist, "name", |
023695d9 SE |
934 | "monitor event in cgroup name only", |
935 | parse_cgroups), | |
bea03405 NK |
936 | OPT_STRING('u', "uid", &record.opts.target.uid_str, "user", |
937 | "user to profile"), | |
a5aabdac SE |
938 | |
939 | OPT_CALLBACK_NOOPT('b', "branch-any", &record.opts.branch_stack, | |
940 | "branch any", "sample any taken branches", | |
941 | parse_branch_stack), | |
942 | ||
943 | OPT_CALLBACK('j', "branch-filter", &record.opts.branch_stack, | |
944 | "branch filter mask", "branch stack filter modes", | |
bdfebd84 | 945 | parse_branch_stack), |
0e9b20b8 IM |
946 | OPT_END() |
947 | }; | |
948 | ||
f37a291c | 949 | int cmd_record(int argc, const char **argv, const char *prefix __used) |
0e9b20b8 | 950 | { |
69aad6f1 ACM |
951 | int err = -ENOMEM; |
952 | struct perf_evsel *pos; | |
d20deb64 ACM |
953 | struct perf_evlist *evsel_list; |
954 | struct perf_record *rec = &record; | |
16ad2ffb | 955 | char errbuf[BUFSIZ]; |
0e9b20b8 | 956 | |
7e2ed097 | 957 | evsel_list = perf_evlist__new(NULL, NULL); |
361c99a6 ACM |
958 | if (evsel_list == NULL) |
959 | return -ENOMEM; | |
960 | ||
d20deb64 ACM |
961 | rec->evlist = evsel_list; |
962 | ||
bca647aa | 963 | argc = parse_options(argc, argv, record_options, record_usage, |
655000e7 | 964 | PARSE_OPT_STOP_AT_NON_OPTION); |
d67356e7 | 965 | if (!argc && perf_target__none(&rec->opts.target)) |
bca647aa | 966 | usage_with_options(record_usage, record_options); |
0e9b20b8 | 967 | |
d20deb64 | 968 | if (rec->force && rec->append_file) { |
3780f488 NK |
969 | ui__error("Can't overwrite and append at the same time." |
970 | " You need to choose between -f and -A"); | |
bca647aa | 971 | usage_with_options(record_usage, record_options); |
d20deb64 ACM |
972 | } else if (rec->append_file) { |
973 | rec->write_mode = WRITE_APPEND; | |
7865e817 | 974 | } else { |
d20deb64 | 975 | rec->write_mode = WRITE_FORCE; |
7865e817 FW |
976 | } |
977 | ||
bea03405 | 978 | if (nr_cgroups && !rec->opts.target.system_wide) { |
3780f488 NK |
979 | ui__error("cgroup monitoring only available in" |
980 | " system-wide mode\n"); | |
023695d9 SE |
981 | usage_with_options(record_usage, record_options); |
982 | } | |
983 | ||
655000e7 | 984 | symbol__init(); |
baa2f6ce | 985 | |
ec80fde7 | 986 | if (symbol_conf.kptr_restrict) |
646aaea6 ACM |
987 | pr_warning( |
988 | "WARNING: Kernel address maps (/proc/{kallsyms,modules}) are restricted,\n" | |
989 | "check /proc/sys/kernel/kptr_restrict.\n\n" | |
990 | "Samples in kernel functions may not be resolved if a suitable vmlinux\n" | |
991 | "file is not found in the buildid cache or in the vmlinux path.\n\n" | |
992 | "Samples in kernel modules won't be resolved at all.\n\n" | |
993 | "If some relocation was applied (e.g. kexec) symbols may be misresolved\n" | |
994 | "even with a suitable vmlinux or kallsyms file.\n\n"); | |
ec80fde7 | 995 | |
d20deb64 | 996 | if (rec->no_buildid_cache || rec->no_buildid) |
a1ac1d3c | 997 | disable_buildid_cache(); |
655000e7 | 998 | |
361c99a6 ACM |
999 | if (evsel_list->nr_entries == 0 && |
1000 | perf_evlist__add_default(evsel_list) < 0) { | |
69aad6f1 ACM |
1001 | pr_err("Not enough memory for event selector list\n"); |
1002 | goto out_symbol_exit; | |
bbd36e5e | 1003 | } |
0e9b20b8 | 1004 | |
16ad2ffb NK |
1005 | err = perf_target__validate(&rec->opts.target); |
1006 | if (err) { | |
1007 | perf_target__strerror(&rec->opts.target, err, errbuf, BUFSIZ); | |
1008 | ui__warning("%s", errbuf); | |
1009 | } | |
1010 | ||
1011 | err = perf_target__parse_uid(&rec->opts.target); | |
1012 | if (err) { | |
1013 | int saved_errno = errno; | |
4bd0f2d2 | 1014 | |
16ad2ffb | 1015 | perf_target__strerror(&rec->opts.target, err, errbuf, BUFSIZ); |
3780f488 | 1016 | ui__error("%s", errbuf); |
16ad2ffb NK |
1017 | |
1018 | err = -saved_errno; | |
0d37aa34 | 1019 | goto out_free_fd; |
16ad2ffb | 1020 | } |
0d37aa34 | 1021 | |
16ad2ffb | 1022 | err = -ENOMEM; |
b809ac10 | 1023 | if (perf_evlist__create_maps(evsel_list, &rec->opts.target) < 0) |
dd7927f4 | 1024 | usage_with_options(record_usage, record_options); |
69aad6f1 | 1025 | |
361c99a6 | 1026 | list_for_each_entry(pos, &evsel_list->entries, node) { |
7289f83c | 1027 | if (perf_header__push_event(pos->attr.config, perf_evsel__name(pos))) |
ad7f4e3f | 1028 | goto out_free_fd; |
d6d901c2 | 1029 | } |
5c581041 | 1030 | |
d20deb64 ACM |
1031 | if (rec->opts.user_interval != ULLONG_MAX) |
1032 | rec->opts.default_interval = rec->opts.user_interval; | |
1033 | if (rec->opts.user_freq != UINT_MAX) | |
1034 | rec->opts.freq = rec->opts.user_freq; | |
f9212819 | 1035 | |
7e4ff9e3 MG |
1036 | /* |
1037 | * User specified count overrides default frequency. | |
1038 | */ | |
d20deb64 ACM |
1039 | if (rec->opts.default_interval) |
1040 | rec->opts.freq = 0; | |
1041 | else if (rec->opts.freq) { | |
1042 | rec->opts.default_interval = rec->opts.freq; | |
7e4ff9e3 | 1043 | } else { |
3780f488 | 1044 | ui__error("frequency and count are zero, aborting\n"); |
39d17dac | 1045 | err = -EINVAL; |
5c581041 | 1046 | goto out_free_fd; |
7e4ff9e3 MG |
1047 | } |
1048 | ||
d20deb64 | 1049 | err = __cmd_record(&record, argc, argv); |
39d17dac | 1050 | out_free_fd: |
7e2ed097 | 1051 | perf_evlist__delete_maps(evsel_list); |
d65a458b ACM |
1052 | out_symbol_exit: |
1053 | symbol__exit(); | |
39d17dac | 1054 | return err; |
0e9b20b8 | 1055 | } |