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.
12 #include "util/build-id.h"
13 #include "util/util.h"
14 #include "util/parse-options.h"
15 #include "util/parse-events.h"
17 #include "util/header.h"
18 #include "util/event.h"
19 #include "util/evlist.h"
20 #include "util/evsel.h"
21 #include "util/debug.h"
22 #include "util/session.h"
23 #include "util/tool.h"
24 #include "util/symbol.h"
25 #include "util/cpumap.h"
26 #include "util/thread_map.h"
27 #include "util/data.h"
33 #ifndef HAVE_ON_EXIT_SUPPORT
37 static int __on_exit_count = 0;
38 typedef void (*on_exit_func_t) (int, void *);
39 static on_exit_func_t __on_exit_funcs[ATEXIT_MAX];
40 static void *__on_exit_args[ATEXIT_MAX];
41 static int __exitcode = 0;
42 static void __handle_on_exit_funcs(void);
43 static int on_exit(on_exit_func_t function, void *arg);
44 #define exit(x) (exit)(__exitcode = (x))
46 static int on_exit(on_exit_func_t function, void *arg)
48 if (__on_exit_count == ATEXIT_MAX)
50 else if (__on_exit_count == 0)
51 atexit(__handle_on_exit_funcs);
52 __on_exit_funcs[__on_exit_count] = function;
53 __on_exit_args[__on_exit_count++] = arg;
57 static void __handle_on_exit_funcs(void)
60 for (i = 0; i < __on_exit_count; i++)
61 __on_exit_funcs[i] (__exitcode, __on_exit_args[i]);
66 struct perf_tool tool;
67 struct perf_record_opts opts;
69 struct perf_data_file file;
70 struct perf_evlist *evlist;
71 struct perf_session *session;
75 bool no_buildid_cache;
79 static int record__write(struct record *rec, void *bf, size_t size)
81 if (perf_data_file__write(rec->session->file, bf, size) < 0) {
82 pr_err("failed to write perf data, error: %m\n");
86 rec->bytes_written += size;
90 static int process_synthesized_event(struct perf_tool *tool,
91 union perf_event *event,
92 struct perf_sample *sample __maybe_unused,
93 struct machine *machine __maybe_unused)
95 struct record *rec = container_of(tool, struct record, tool);
96 return record__write(rec, event, event->header.size);
99 static int record__mmap_read(struct record *rec, struct perf_mmap *md)
101 unsigned int head = perf_mmap__read_head(md);
102 unsigned int old = md->prev;
103 unsigned char *data = md->base + page_size;
115 if ((old & md->mask) + size != (head & md->mask)) {
116 buf = &data[old & md->mask];
117 size = md->mask + 1 - (old & md->mask);
120 if (record__write(rec, buf, size) < 0) {
126 buf = &data[old & md->mask];
130 if (record__write(rec, buf, size) < 0) {
136 perf_mmap__write_tail(md, old);
142 static volatile int done = 0;
143 static volatile int signr = -1;
144 static volatile int child_finished = 0;
146 static void sig_handler(int sig)
155 static void record__sig_exit(int exit_status __maybe_unused, void *arg)
157 struct record *rec = arg;
160 if (rec->evlist->workload.pid > 0) {
162 kill(rec->evlist->workload.pid, SIGTERM);
165 if (WIFSIGNALED(status))
166 psignal(WTERMSIG(status), rec->progname);
169 if (signr == -1 || signr == SIGUSR1)
172 signal(signr, SIG_DFL);
175 static int record__open(struct record *rec)
178 struct perf_evsel *pos;
179 struct perf_evlist *evlist = rec->evlist;
180 struct perf_session *session = rec->session;
181 struct perf_record_opts *opts = &rec->opts;
184 perf_evlist__config(evlist, opts);
186 list_for_each_entry(pos, &evlist->entries, node) {
188 if (perf_evsel__open(pos, evlist->cpus, evlist->threads) < 0) {
189 if (perf_evsel__fallback(pos, errno, msg, sizeof(msg))) {
191 ui__warning("%s\n", msg);
196 perf_evsel__open_strerror(pos, &opts->target,
197 errno, msg, sizeof(msg));
198 ui__error("%s\n", msg);
203 if (perf_evlist__apply_filters(evlist)) {
204 error("failed to set filter with %d (%s)\n", errno,
210 if (perf_evlist__mmap(evlist, opts->mmap_pages, false) < 0) {
211 if (errno == EPERM) {
212 pr_err("Permission error mapping pages.\n"
213 "Consider increasing "
214 "/proc/sys/kernel/perf_event_mlock_kb,\n"
215 "or try again with a smaller value of -m/--mmap_pages.\n"
216 "(current value: %u)\n", opts->mmap_pages);
219 pr_err("failed to mmap with %d (%s)\n", errno, strerror(errno));
225 session->evlist = evlist;
226 perf_session__set_id_hdr_size(session);
231 static int process_buildids(struct record *rec)
233 struct perf_data_file *file = &rec->file;
234 struct perf_session *session = rec->session;
235 u64 start = session->header.data_offset;
237 u64 size = lseek(file->fd, 0, SEEK_CUR);
241 return __perf_session__process_events(session, start,
243 size, &build_id__mark_dso_hit_ops);
246 static void record__exit(int status, void *arg)
248 struct record *rec = arg;
249 struct perf_data_file *file = &rec->file;
254 if (!file->is_pipe) {
255 rec->session->header.data_size += rec->bytes_written;
257 if (!rec->no_buildid)
258 process_buildids(rec);
259 perf_session__write_header(rec->session, rec->evlist,
261 perf_session__delete(rec->session);
262 perf_evlist__delete(rec->evlist);
267 static void perf_event__synthesize_guest_os(struct machine *machine, void *data)
270 struct perf_tool *tool = data;
272 *As for guest kernel when processing subcommand record&report,
273 *we arrange module mmap prior to guest kernel mmap and trigger
274 *a preload dso because default guest module symbols are loaded
275 *from guest kallsyms instead of /lib/modules/XXX/XXX. This
276 *method is used to avoid symbol missing when the first addr is
277 *in module instead of in guest kernel.
279 err = perf_event__synthesize_modules(tool, process_synthesized_event,
282 pr_err("Couldn't record guest kernel [%d]'s reference"
283 " relocation symbol.\n", machine->pid);
286 * We use _stext for guest kernel because guest kernel's /proc/kallsyms
287 * have no _text sometimes.
289 err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event,
292 err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event,
295 pr_err("Couldn't record guest kernel [%d]'s reference"
296 " relocation symbol.\n", machine->pid);
299 static struct perf_event_header finished_round_event = {
300 .size = sizeof(struct perf_event_header),
301 .type = PERF_RECORD_FINISHED_ROUND,
304 static int record__mmap_read_all(struct record *rec)
309 for (i = 0; i < rec->evlist->nr_mmaps; i++) {
310 if (rec->evlist->mmap[i].base) {
311 if (record__mmap_read(rec, &rec->evlist->mmap[i]) != 0) {
318 if (perf_header__has_feat(&rec->session->header, HEADER_TRACING_DATA))
319 rc = record__write(rec, &finished_round_event, sizeof(finished_round_event));
325 static void record__init_features(struct record *rec)
327 struct perf_evlist *evsel_list = rec->evlist;
328 struct perf_session *session = rec->session;
331 for (feat = HEADER_FIRST_FEATURE; feat < HEADER_LAST_FEATURE; feat++)
332 perf_header__set_feat(&session->header, feat);
335 perf_header__clear_feat(&session->header, HEADER_BUILD_ID);
337 if (!have_tracepoints(&evsel_list->entries))
338 perf_header__clear_feat(&session->header, HEADER_TRACING_DATA);
340 if (!rec->opts.branch_stack)
341 perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK);
344 static int __cmd_record(struct record *rec, int argc, const char **argv)
347 unsigned long waking = 0;
348 const bool forks = argc > 0;
349 struct machine *machine;
350 struct perf_tool *tool = &rec->tool;
351 struct perf_record_opts *opts = &rec->opts;
352 struct perf_evlist *evsel_list = rec->evlist;
353 struct perf_data_file *file = &rec->file;
354 struct perf_session *session;
355 bool disabled = false;
357 rec->progname = argv[0];
359 on_exit(record__sig_exit, rec);
360 signal(SIGCHLD, sig_handler);
361 signal(SIGINT, sig_handler);
362 signal(SIGUSR1, sig_handler);
363 signal(SIGTERM, sig_handler);
365 session = perf_session__new(file, false, NULL);
366 if (session == NULL) {
367 pr_err("Not enough memory for reading perf file header\n");
371 rec->session = session;
373 record__init_features(rec);
376 err = perf_evlist__prepare_workload(evsel_list, &opts->target,
380 pr_err("Couldn't run the workload!\n");
381 goto out_delete_session;
385 if (record__open(rec) != 0) {
387 goto out_delete_session;
390 if (!evsel_list->nr_groups)
391 perf_header__clear_feat(&session->header, HEADER_GROUP_DESC);
394 * perf_session__delete(session) will be called at record__exit()
396 on_exit(record__exit, rec);
399 err = perf_header__write_pipe(file->fd);
401 goto out_delete_session;
403 err = perf_session__write_header(session, evsel_list,
406 goto out_delete_session;
410 && !perf_header__has_feat(&session->header, HEADER_BUILD_ID)) {
411 pr_err("Couldn't generate buildids. "
412 "Use --no-buildid to profile anyway.\n");
414 goto out_delete_session;
417 machine = &session->machines.host;
420 err = perf_event__synthesize_attrs(tool, session,
421 process_synthesized_event);
423 pr_err("Couldn't synthesize attrs.\n");
424 goto out_delete_session;
427 if (have_tracepoints(&evsel_list->entries)) {
429 * FIXME err <= 0 here actually means that
430 * there were no tracepoints so its not really
431 * an error, just that we don't need to
432 * synthesize anything. We really have to
433 * return this more properly and also
434 * propagate errors that now are calling die()
436 err = perf_event__synthesize_tracing_data(tool, file->fd, evsel_list,
437 process_synthesized_event);
439 pr_err("Couldn't record tracing data.\n");
440 goto out_delete_session;
442 rec->bytes_written += err;
446 err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event,
449 err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event,
452 pr_err("Couldn't record kernel reference relocation symbol\n"
453 "Symbol resolution may be skewed if relocation was used (e.g. kexec).\n"
454 "Check /proc/kallsyms permission or run as root.\n");
456 err = perf_event__synthesize_modules(tool, process_synthesized_event,
459 pr_err("Couldn't record kernel module information.\n"
460 "Symbol resolution may be skewed if relocation was used (e.g. kexec).\n"
461 "Check /proc/modules permission or run as root.\n");
464 machines__process_guests(&session->machines,
465 perf_event__synthesize_guest_os, tool);
468 err = __machine__synthesize_threads(machine, tool, &opts->target, evsel_list->threads,
469 process_synthesized_event, opts->sample_address);
471 goto out_delete_session;
473 if (rec->realtime_prio) {
474 struct sched_param param;
476 param.sched_priority = rec->realtime_prio;
477 if (sched_setscheduler(0, SCHED_FIFO, ¶m)) {
478 pr_err("Could not set realtime priority.\n");
480 goto out_delete_session;
485 * When perf is starting the traced process, all the events
486 * (apart from group members) have enable_on_exec=1 set,
487 * so don't spoil it by prematurely enabling them.
489 if (!target__none(&opts->target))
490 perf_evlist__enable(evsel_list);
496 perf_evlist__start_workload(evsel_list);
499 int hits = rec->samples;
501 if (record__mmap_read_all(rec) < 0) {
503 goto out_delete_session;
506 if (hits == rec->samples) {
509 err = poll(evsel_list->pollfd, evsel_list->nr_fds, -1);
514 * When perf is starting the traced process, at the end events
515 * die with the process and we wait for that. Thus no need to
516 * disable events in this case.
518 if (done && !disabled && !target__none(&opts->target)) {
519 perf_evlist__disable(evsel_list);
524 if (quiet || signr == SIGUSR1)
527 fprintf(stderr, "[ perf record: Woken up %ld times to write data ]\n", waking);
530 * Approximate RIP event size: 24 bytes.
533 "[ perf record: Captured and wrote %.3f MB %s (~%" PRIu64 " samples) ]\n",
534 (double)rec->bytes_written / 1024.0 / 1024.0,
536 rec->bytes_written / 24);
541 perf_session__delete(session);
545 #define BRANCH_OPT(n, m) \
546 { .name = n, .mode = (m) }
548 #define BRANCH_END { .name = NULL }
555 static const struct branch_mode branch_modes[] = {
556 BRANCH_OPT("u", PERF_SAMPLE_BRANCH_USER),
557 BRANCH_OPT("k", PERF_SAMPLE_BRANCH_KERNEL),
558 BRANCH_OPT("hv", PERF_SAMPLE_BRANCH_HV),
559 BRANCH_OPT("any", PERF_SAMPLE_BRANCH_ANY),
560 BRANCH_OPT("any_call", PERF_SAMPLE_BRANCH_ANY_CALL),
561 BRANCH_OPT("any_ret", PERF_SAMPLE_BRANCH_ANY_RETURN),
562 BRANCH_OPT("ind_call", PERF_SAMPLE_BRANCH_IND_CALL),
563 BRANCH_OPT("abort_tx", PERF_SAMPLE_BRANCH_ABORT_TX),
564 BRANCH_OPT("in_tx", PERF_SAMPLE_BRANCH_IN_TX),
565 BRANCH_OPT("no_tx", PERF_SAMPLE_BRANCH_NO_TX),
570 parse_branch_stack(const struct option *opt, const char *str, int unset)
573 (PERF_SAMPLE_BRANCH_USER |\
574 PERF_SAMPLE_BRANCH_KERNEL |\
575 PERF_SAMPLE_BRANCH_HV)
577 uint64_t *mode = (uint64_t *)opt->value;
578 const struct branch_mode *br;
579 char *s, *os = NULL, *p;
586 * cannot set it twice, -b + --branch-filter for instance
591 /* str may be NULL in case no arg is passed to -b */
593 /* because str is read-only */
594 s = os = strdup(str);
603 for (br = branch_modes; br->name; br++) {
604 if (!strcasecmp(s, br->name))
608 ui__warning("unknown branch filter %s,"
609 " check man page\n", s);
623 /* default to any branch */
624 if ((*mode & ~ONLY_PLM) == 0) {
625 *mode = PERF_SAMPLE_BRANCH_ANY;
632 #ifdef HAVE_LIBUNWIND_SUPPORT
633 static int get_stack_size(char *str, unsigned long *_size)
637 unsigned long max_size = round_down(USHRT_MAX, sizeof(u64));
639 size = strtoul(str, &endptr, 0);
645 size = round_up(size, sizeof(u64));
646 if (!size || size > max_size)
654 pr_err("callchain: Incorrect stack dump size (max %ld): %s\n",
658 #endif /* HAVE_LIBUNWIND_SUPPORT */
660 int record_parse_callchain(const char *arg, struct perf_record_opts *opts)
662 char *tok, *name, *saveptr = NULL;
666 /* We need buffer that we know we can write to. */
667 buf = malloc(strlen(arg) + 1);
673 tok = strtok_r((char *)buf, ",", &saveptr);
674 name = tok ? : (char *)buf;
677 /* Framepointer style */
678 if (!strncmp(name, "fp", sizeof("fp"))) {
679 if (!strtok_r(NULL, ",", &saveptr)) {
680 opts->call_graph = CALLCHAIN_FP;
683 pr_err("callchain: No more arguments "
684 "needed for -g fp\n");
687 #ifdef HAVE_LIBUNWIND_SUPPORT
689 } else if (!strncmp(name, "dwarf", sizeof("dwarf"))) {
690 const unsigned long default_stack_dump_size = 8192;
693 opts->call_graph = CALLCHAIN_DWARF;
694 opts->stack_dump_size = default_stack_dump_size;
696 tok = strtok_r(NULL, ",", &saveptr);
698 unsigned long size = 0;
700 ret = get_stack_size(tok, &size);
701 opts->stack_dump_size = size;
703 #endif /* HAVE_LIBUNWIND_SUPPORT */
705 pr_err("callchain: Unknown --call-graph option "
716 static void callchain_debug(struct perf_record_opts *opts)
718 pr_debug("callchain: type %d\n", opts->call_graph);
720 if (opts->call_graph == CALLCHAIN_DWARF)
721 pr_debug("callchain: stack dump size %d\n",
722 opts->stack_dump_size);
725 int record_parse_callchain_opt(const struct option *opt,
729 struct perf_record_opts *opts = opt->value;
732 /* --no-call-graph */
734 opts->call_graph = CALLCHAIN_NONE;
735 pr_debug("callchain: disabled\n");
739 ret = record_parse_callchain(arg, opts);
741 callchain_debug(opts);
746 int record_callchain_opt(const struct option *opt,
747 const char *arg __maybe_unused,
748 int unset __maybe_unused)
750 struct perf_record_opts *opts = opt->value;
752 if (opts->call_graph == CALLCHAIN_NONE)
753 opts->call_graph = CALLCHAIN_FP;
755 callchain_debug(opts);
759 static const char * const record_usage[] = {
760 "perf record [<options>] [<command>]",
761 "perf record [<options>] -- <command> [<options>]",
766 * XXX Ideally would be local to cmd_record() and passed to a record__new
767 * because we need to have access to it in record__exit, that is called
768 * after cmd_record() exits, but since record_options need to be accessible to
769 * builtin-script, leave it here.
771 * At least we don't ouch it in all the other functions here directly.
773 * Just say no to tons of global variables, sigh.
775 static struct record record = {
777 .mmap_pages = UINT_MAX,
778 .user_freq = UINT_MAX,
779 .user_interval = ULLONG_MAX,
783 .default_per_cpu = true,
788 #define CALLCHAIN_HELP "setup and enables call-graph (stack chain/backtrace) recording: "
790 #ifdef HAVE_LIBUNWIND_SUPPORT
791 const char record_callchain_help[] = CALLCHAIN_HELP "fp dwarf";
793 const char record_callchain_help[] = CALLCHAIN_HELP "fp";
797 * XXX Will stay a global variable till we fix builtin-script.c to stop messing
798 * with it and switch to use the library functions in perf_evlist that came
799 * from builtin-record.c, i.e. use perf_record_opts,
800 * perf_evlist__prepare_workload, etc instead of fork+exec'in 'perf record',
803 const struct option record_options[] = {
804 OPT_CALLBACK('e', "event", &record.evlist, "event",
805 "event selector. use 'perf list' to list available events",
806 parse_events_option),
807 OPT_CALLBACK(0, "filter", &record.evlist, "filter",
808 "event filter", parse_filter),
809 OPT_STRING('p', "pid", &record.opts.target.pid, "pid",
810 "record events on existing process id"),
811 OPT_STRING('t', "tid", &record.opts.target.tid, "tid",
812 "record events on existing thread id"),
813 OPT_INTEGER('r', "realtime", &record.realtime_prio,
814 "collect data with this RT SCHED_FIFO priority"),
815 OPT_BOOLEAN('D', "no-delay", &record.opts.no_delay,
816 "collect data without buffering"),
817 OPT_BOOLEAN('R', "raw-samples", &record.opts.raw_samples,
818 "collect raw sample records from all opened counters"),
819 OPT_BOOLEAN('a', "all-cpus", &record.opts.target.system_wide,
820 "system-wide collection from all CPUs"),
821 OPT_STRING('C', "cpu", &record.opts.target.cpu_list, "cpu",
822 "list of cpus to monitor"),
823 OPT_U64('c', "count", &record.opts.user_interval, "event period to sample"),
824 OPT_STRING('o', "output", &record.file.path, "file",
826 OPT_BOOLEAN_SET('i', "no-inherit", &record.opts.no_inherit,
827 &record.opts.no_inherit_set,
828 "child tasks do not inherit counters"),
829 OPT_UINTEGER('F', "freq", &record.opts.user_freq, "profile at this frequency"),
830 OPT_CALLBACK('m', "mmap-pages", &record.opts.mmap_pages, "pages",
831 "number of mmap data pages",
832 perf_evlist__parse_mmap_pages),
833 OPT_BOOLEAN(0, "group", &record.opts.group,
834 "put the counters into a counter group"),
835 OPT_CALLBACK_NOOPT('g', NULL, &record.opts,
836 NULL, "enables call-graph recording" ,
837 &record_callchain_opt),
838 OPT_CALLBACK(0, "call-graph", &record.opts,
839 "mode[,dump_size]", record_callchain_help,
840 &record_parse_callchain_opt),
841 OPT_INCR('v', "verbose", &verbose,
842 "be more verbose (show counter open errors, etc)"),
843 OPT_BOOLEAN('q', "quiet", &quiet, "don't print any message"),
844 OPT_BOOLEAN('s', "stat", &record.opts.inherit_stat,
845 "per thread counts"),
846 OPT_BOOLEAN('d', "data", &record.opts.sample_address,
848 OPT_BOOLEAN('T', "timestamp", &record.opts.sample_time, "Sample timestamps"),
849 OPT_BOOLEAN('P', "period", &record.opts.period, "Sample period"),
850 OPT_BOOLEAN('n', "no-samples", &record.opts.no_samples,
852 OPT_BOOLEAN('N', "no-buildid-cache", &record.no_buildid_cache,
853 "do not update the buildid cache"),
854 OPT_BOOLEAN('B', "no-buildid", &record.no_buildid,
855 "do not collect buildids in perf.data"),
856 OPT_CALLBACK('G', "cgroup", &record.evlist, "name",
857 "monitor event in cgroup name only",
859 OPT_STRING('u', "uid", &record.opts.target.uid_str, "user",
862 OPT_CALLBACK_NOOPT('b', "branch-any", &record.opts.branch_stack,
863 "branch any", "sample any taken branches",
866 OPT_CALLBACK('j', "branch-filter", &record.opts.branch_stack,
867 "branch filter mask", "branch stack filter modes",
869 OPT_BOOLEAN('W', "weight", &record.opts.sample_weight,
870 "sample by weight (on special events only)"),
871 OPT_BOOLEAN(0, "transaction", &record.opts.sample_transaction,
872 "sample transaction flags (special events only)"),
873 OPT_BOOLEAN(0, "per-thread", &record.opts.target.per_thread,
874 "use per-thread mmaps"),
878 int cmd_record(int argc, const char **argv, const char *prefix __maybe_unused)
881 struct perf_evlist *evsel_list;
882 struct record *rec = &record;
885 evsel_list = perf_evlist__new();
886 if (evsel_list == NULL)
889 rec->evlist = evsel_list;
891 argc = parse_options(argc, argv, record_options, record_usage,
892 PARSE_OPT_STOP_AT_NON_OPTION);
893 if (!argc && target__none(&rec->opts.target))
894 usage_with_options(record_usage, record_options);
896 if (nr_cgroups && !rec->opts.target.system_wide) {
897 ui__error("cgroup monitoring only available in"
898 " system-wide mode\n");
899 usage_with_options(record_usage, record_options);
904 if (symbol_conf.kptr_restrict)
906 "WARNING: Kernel address maps (/proc/{kallsyms,modules}) are restricted,\n"
907 "check /proc/sys/kernel/kptr_restrict.\n\n"
908 "Samples in kernel functions may not be resolved if a suitable vmlinux\n"
909 "file is not found in the buildid cache or in the vmlinux path.\n\n"
910 "Samples in kernel modules won't be resolved at all.\n\n"
911 "If some relocation was applied (e.g. kexec) symbols may be misresolved\n"
912 "even with a suitable vmlinux or kallsyms file.\n\n");
914 if (rec->no_buildid_cache || rec->no_buildid)
915 disable_buildid_cache();
917 if (evsel_list->nr_entries == 0 &&
918 perf_evlist__add_default(evsel_list) < 0) {
919 pr_err("Not enough memory for event selector list\n");
920 goto out_symbol_exit;
923 if (rec->opts.target.tid && !rec->opts.no_inherit_set)
924 rec->opts.no_inherit = true;
926 err = target__validate(&rec->opts.target);
928 target__strerror(&rec->opts.target, err, errbuf, BUFSIZ);
929 ui__warning("%s", errbuf);
932 err = target__parse_uid(&rec->opts.target);
934 int saved_errno = errno;
936 target__strerror(&rec->opts.target, err, errbuf, BUFSIZ);
937 ui__error("%s", errbuf);
940 goto out_symbol_exit;
944 if (perf_evlist__create_maps(evsel_list, &rec->opts.target) < 0)
945 usage_with_options(record_usage, record_options);
947 if (perf_record_opts__config(&rec->opts)) {
952 err = __cmd_record(&record, argc, argv);
954 perf_evlist__munmap(evsel_list);
955 perf_evlist__close(evsel_list);
957 perf_evlist__delete_maps(evsel_list);