}
#endif
-struct perf_record {
+struct record {
struct perf_tool tool;
- struct perf_record_opts opts;
+ struct record_opts opts;
u64 bytes_written;
struct perf_data_file file;
struct perf_evlist *evlist;
long samples;
};
-static int perf_record__write(struct perf_record *rec, void *buf, size_t size)
+static int record__write(struct record *rec, void *bf, size_t size)
{
- struct perf_data_file *file = &rec->file;
-
- while (size) {
- ssize_t ret = write(file->fd, buf, size);
-
- if (ret < 0) {
- pr_err("failed to write perf data, error: %m\n");
- return -1;
- }
-
- size -= ret;
- buf += ret;
-
- rec->bytes_written += ret;
+ if (perf_data_file__write(rec->session->file, bf, size) < 0) {
+ pr_err("failed to write perf data, error: %m\n");
+ return -1;
}
+ rec->bytes_written += size;
return 0;
}
struct perf_sample *sample __maybe_unused,
struct machine *machine __maybe_unused)
{
- struct perf_record *rec = container_of(tool, struct perf_record, tool);
- return perf_record__write(rec, event, event->header.size);
+ struct record *rec = container_of(tool, struct record, tool);
+ return record__write(rec, event, event->header.size);
}
-static int perf_record__mmap_read(struct perf_record *rec,
- struct perf_mmap *md)
+static int record__mmap_read(struct record *rec, struct perf_mmap *md)
{
unsigned int head = perf_mmap__read_head(md);
unsigned int old = md->prev;
size = md->mask + 1 - (old & md->mask);
old += size;
- if (perf_record__write(rec, buf, size) < 0) {
+ if (record__write(rec, buf, size) < 0) {
rc = -1;
goto out;
}
size = head - old;
old += size;
- if (perf_record__write(rec, buf, size) < 0) {
+ if (record__write(rec, buf, size) < 0) {
rc = -1;
goto out;
}
signr = sig;
}
-static void perf_record__sig_exit(int exit_status __maybe_unused, void *arg)
+static void record__sig_exit(int exit_status __maybe_unused, void *arg)
{
- struct perf_record *rec = arg;
+ struct record *rec = arg;
int status;
if (rec->evlist->workload.pid > 0) {
signal(signr, SIG_DFL);
}
-static int perf_record__open(struct perf_record *rec)
+static int record__open(struct record *rec)
{
char msg[512];
struct perf_evsel *pos;
struct perf_evlist *evlist = rec->evlist;
struct perf_session *session = rec->session;
- struct perf_record_opts *opts = &rec->opts;
+ struct record_opts *opts = &rec->opts;
int rc = 0;
perf_evlist__config(evlist, opts);
- list_for_each_entry(pos, &evlist->entries, node) {
+ evlist__for_each(evlist, pos) {
try_again:
if (perf_evsel__open(pos, evlist->cpus, evlist->threads) < 0) {
if (perf_evsel__fallback(pos, errno, msg, sizeof(msg))) {
return rc;
}
-static int process_buildids(struct perf_record *rec)
+static int process_buildids(struct record *rec)
{
struct perf_data_file *file = &rec->file;
struct perf_session *session = rec->session;
size, &build_id__mark_dso_hit_ops);
}
-static void perf_record__exit(int status, void *arg)
+static void record__exit(int status, void *arg)
{
- struct perf_record *rec = arg;
+ struct record *rec = arg;
struct perf_data_file *file = &rec->file;
if (status != 0)
.type = PERF_RECORD_FINISHED_ROUND,
};
-static int perf_record__mmap_read_all(struct perf_record *rec)
+static int record__mmap_read_all(struct record *rec)
{
int i;
int rc = 0;
for (i = 0; i < rec->evlist->nr_mmaps; i++) {
if (rec->evlist->mmap[i].base) {
- if (perf_record__mmap_read(rec, &rec->evlist->mmap[i]) != 0) {
+ if (record__mmap_read(rec, &rec->evlist->mmap[i]) != 0) {
rc = -1;
goto out;
}
}
if (perf_header__has_feat(&rec->session->header, HEADER_TRACING_DATA))
- rc = perf_record__write(rec, &finished_round_event,
- sizeof(finished_round_event));
+ rc = record__write(rec, &finished_round_event, sizeof(finished_round_event));
out:
return rc;
}
-static void perf_record__init_features(struct perf_record *rec)
+static void record__init_features(struct record *rec)
{
- struct perf_evlist *evsel_list = rec->evlist;
struct perf_session *session = rec->session;
int feat;
if (rec->no_buildid)
perf_header__clear_feat(&session->header, HEADER_BUILD_ID);
- if (!have_tracepoints(&evsel_list->entries))
+ if (!have_tracepoints(&rec->evlist->entries))
perf_header__clear_feat(&session->header, HEADER_TRACING_DATA);
if (!rec->opts.branch_stack)
perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK);
}
-static int __cmd_record(struct perf_record *rec, int argc, const char **argv)
+static volatile int workload_exec_errno;
+
+/*
+ * perf_evlist__prepare_workload will send a SIGUSR1
+ * if the fork fails, since we asked by setting its
+ * want_signal to true.
+ */
+static void workload_exec_failed_signal(int signo, siginfo_t *info,
+ void *ucontext __maybe_unused)
+{
+ workload_exec_errno = info->si_value.sival_int;
+ done = 1;
+ signr = signo;
+ child_finished = 1;
+}
+
+static int __cmd_record(struct record *rec, int argc, const char **argv)
{
int err;
unsigned long waking = 0;
const bool forks = argc > 0;
struct machine *machine;
struct perf_tool *tool = &rec->tool;
- struct perf_record_opts *opts = &rec->opts;
- struct perf_evlist *evsel_list = rec->evlist;
+ struct record_opts *opts = &rec->opts;
struct perf_data_file *file = &rec->file;
struct perf_session *session;
bool disabled = false;
rec->progname = argv[0];
- on_exit(perf_record__sig_exit, rec);
+ on_exit(record__sig_exit, rec);
signal(SIGCHLD, sig_handler);
signal(SIGINT, sig_handler);
- signal(SIGUSR1, sig_handler);
signal(SIGTERM, sig_handler);
session = perf_session__new(file, false, NULL);
rec->session = session;
- perf_record__init_features(rec);
+ record__init_features(rec);
if (forks) {
- err = perf_evlist__prepare_workload(evsel_list, &opts->target,
+ err = perf_evlist__prepare_workload(rec->evlist, &opts->target,
argv, file->is_pipe,
- true);
+ workload_exec_failed_signal);
if (err < 0) {
pr_err("Couldn't run the workload!\n");
goto out_delete_session;
}
}
- if (perf_record__open(rec) != 0) {
+ if (record__open(rec) != 0) {
err = -1;
goto out_delete_session;
}
- if (!evsel_list->nr_groups)
+ if (!rec->evlist->nr_groups)
perf_header__clear_feat(&session->header, HEADER_GROUP_DESC);
/*
- * perf_session__delete(session) will be called at perf_record__exit()
+ * perf_session__delete(session) will be called at record__exit()
*/
- on_exit(perf_record__exit, rec);
+ on_exit(record__exit, rec);
if (file->is_pipe) {
err = perf_header__write_pipe(file->fd);
if (err < 0)
goto out_delete_session;
} else {
- err = perf_session__write_header(session, evsel_list,
+ err = perf_session__write_header(session, rec->evlist,
file->fd, false);
if (err < 0)
goto out_delete_session;
goto out_delete_session;
}
- if (have_tracepoints(&evsel_list->entries)) {
+ if (have_tracepoints(&rec->evlist->entries)) {
/*
* FIXME err <= 0 here actually means that
* there were no tracepoints so its not really
* return this more properly and also
* propagate errors that now are calling die()
*/
- err = perf_event__synthesize_tracing_data(tool, file->fd, evsel_list,
+ err = perf_event__synthesize_tracing_data(tool, file->fd, rec->evlist,
process_synthesized_event);
if (err <= 0) {
pr_err("Couldn't record tracing data.\n");
perf_event__synthesize_guest_os, tool);
}
- err = __machine__synthesize_threads(machine, tool, &opts->target, evsel_list->threads,
+ err = __machine__synthesize_threads(machine, tool, &opts->target, rec->evlist->threads,
process_synthesized_event, opts->sample_address);
if (err != 0)
goto out_delete_session;
* (apart from group members) have enable_on_exec=1 set,
* so don't spoil it by prematurely enabling them.
*/
- if (!target__none(&opts->target))
- perf_evlist__enable(evsel_list);
+ if (!target__none(&opts->target) && !opts->initial_delay)
+ perf_evlist__enable(rec->evlist);
/*
* Let the child rip
*/
if (forks)
- perf_evlist__start_workload(evsel_list);
+ perf_evlist__start_workload(rec->evlist);
+
+ if (opts->initial_delay) {
+ usleep(opts->initial_delay * 1000);
+ perf_evlist__enable(rec->evlist);
+ }
for (;;) {
int hits = rec->samples;
- if (perf_record__mmap_read_all(rec) < 0) {
+ if (record__mmap_read_all(rec) < 0) {
err = -1;
goto out_delete_session;
}
if (hits == rec->samples) {
if (done)
break;
- err = poll(evsel_list->pollfd, evsel_list->nr_fds, -1);
+ err = poll(rec->evlist->pollfd, rec->evlist->nr_fds, -1);
waking++;
}
* disable events in this case.
*/
if (done && !disabled && !target__none(&opts->target)) {
- perf_evlist__disable(evsel_list);
+ perf_evlist__disable(rec->evlist);
disabled = true;
}
}
+ if (forks && workload_exec_errno) {
+ char msg[512];
+ const char *emsg = strerror_r(workload_exec_errno, msg, sizeof(msg));
+ pr_err("Workload failed: %s\n", emsg);
+ err = -1;
+ goto out_delete_session;
+ }
+
if (quiet || signr == SIGUSR1)
return 0;
}
#endif /* HAVE_LIBUNWIND_SUPPORT */
-int record_parse_callchain(const char *arg, struct perf_record_opts *opts)
+int record_parse_callchain(const char *arg, struct record_opts *opts)
{
char *tok, *name, *saveptr = NULL;
char *buf;
return ret;
}
-static void callchain_debug(struct perf_record_opts *opts)
+static void callchain_debug(struct record_opts *opts)
{
pr_debug("callchain: type %d\n", opts->call_graph);
const char *arg,
int unset)
{
- struct perf_record_opts *opts = opt->value;
+ struct record_opts *opts = opt->value;
int ret;
/* --no-call-graph */
const char *arg __maybe_unused,
int unset __maybe_unused)
{
- struct perf_record_opts *opts = opt->value;
+ struct record_opts *opts = opt->value;
if (opts->call_graph == CALLCHAIN_NONE)
opts->call_graph = CALLCHAIN_FP;
};
/*
- * XXX Ideally would be local to cmd_record() and passed to a perf_record__new
- * because we need to have access to it in perf_record__exit, that is called
+ * XXX Ideally would be local to cmd_record() and passed to a record__new
+ * because we need to have access to it in record__exit, that is called
* after cmd_record() exits, but since record_options need to be accessible to
* builtin-script, leave it here.
*
*
* Just say no to tons of global variables, sigh.
*/
-static struct perf_record record = {
+static struct record record = {
.opts = {
.mmap_pages = UINT_MAX,
.user_freq = UINT_MAX,
/*
* XXX Will stay a global variable till we fix builtin-script.c to stop messing
* with it and switch to use the library functions in perf_evlist that came
- * from builtin-record.c, i.e. use perf_record_opts,
+ * from builtin-record.c, i.e. use record_opts,
* perf_evlist__prepare_workload, etc instead of fork+exec'in 'perf record',
* using pipes, etc.
*/
"record events on existing thread id"),
OPT_INTEGER('r', "realtime", &record.realtime_prio,
"collect data with this RT SCHED_FIFO priority"),
- OPT_BOOLEAN('D', "no-delay", &record.opts.no_delay,
+ OPT_BOOLEAN(0, "no-buffering", &record.opts.no_buffering,
"collect data without buffering"),
OPT_BOOLEAN('R', "raw-samples", &record.opts.raw_samples,
"collect raw sample records from all opened counters"),
OPT_CALLBACK('G', "cgroup", &record.evlist, "name",
"monitor event in cgroup name only",
parse_cgroups),
+ OPT_UINTEGER('D', "delay", &record.opts.initial_delay,
+ "ms to wait before starting measurement after program start"),
OPT_STRING('u', "uid", &record.opts.target.uid_str, "user",
"user to profile"),
int cmd_record(int argc, const char **argv, const char *prefix __maybe_unused)
{
int err = -ENOMEM;
- struct perf_evlist *evsel_list;
- struct perf_record *rec = &record;
+ struct record *rec = &record;
char errbuf[BUFSIZ];
- evsel_list = perf_evlist__new();
- if (evsel_list == NULL)
+ rec->evlist = perf_evlist__new();
+ if (rec->evlist == NULL)
return -ENOMEM;
- rec->evlist = evsel_list;
-
argc = parse_options(argc, argv, record_options, record_usage,
PARSE_OPT_STOP_AT_NON_OPTION);
if (!argc && target__none(&rec->opts.target))
if (rec->no_buildid_cache || rec->no_buildid)
disable_buildid_cache();
- if (evsel_list->nr_entries == 0 &&
- perf_evlist__add_default(evsel_list) < 0) {
+ if (rec->evlist->nr_entries == 0 &&
+ perf_evlist__add_default(rec->evlist) < 0) {
pr_err("Not enough memory for event selector list\n");
goto out_symbol_exit;
}
}
err = -ENOMEM;
- if (perf_evlist__create_maps(evsel_list, &rec->opts.target) < 0)
+ if (perf_evlist__create_maps(rec->evlist, &rec->opts.target) < 0)
usage_with_options(record_usage, record_options);
- if (perf_record_opts__config(&rec->opts)) {
+ if (record_opts__config(&rec->opts)) {
err = -EINVAL;
- goto out_free_fd;
+ goto out_symbol_exit;
}
err = __cmd_record(&record, argc, argv);
-
- perf_evlist__munmap(evsel_list);
- perf_evlist__close(evsel_list);
-out_free_fd:
- perf_evlist__delete_maps(evsel_list);
out_symbol_exit:
symbol__exit();
return err;
projects / firefly-linux-kernel-4.4.55.git / blobdiff