return evsel;
}
+void perf_evsel__config(struct perf_evsel *evsel, struct perf_record_opts *opts)
+{
+ struct perf_event_attr *attr = &evsel->attr;
+ int track = !evsel->idx; /* only the first counter needs these */
+
+ attr->sample_id_all = opts->sample_id_all_avail ? 1 : 0;
+ attr->inherit = !opts->no_inherit;
+ attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED |
+ PERF_FORMAT_TOTAL_TIME_RUNNING |
+ PERF_FORMAT_ID;
+
+ attr->sample_type |= PERF_SAMPLE_IP | PERF_SAMPLE_TID;
+
+ /*
+ * We default some events to a 1 default interval. But keep
+ * it a weak assumption overridable by the user.
+ */
+ if (!attr->sample_period || (opts->user_freq != UINT_MAX &&
+ opts->user_interval != ULLONG_MAX)) {
+ if (opts->freq) {
+ attr->sample_type |= PERF_SAMPLE_PERIOD;
+ attr->freq = 1;
+ attr->sample_freq = opts->freq;
+ } else {
+ attr->sample_period = opts->default_interval;
+ }
+ }
+
+ if (opts->no_samples)
+ attr->sample_freq = 0;
+
+ if (opts->inherit_stat)
+ attr->inherit_stat = 1;
+
+ if (opts->sample_address) {
+ attr->sample_type |= PERF_SAMPLE_ADDR;
+ attr->mmap_data = track;
+ }
+
+ if (opts->call_graph)
+ attr->sample_type |= PERF_SAMPLE_CALLCHAIN;
+
+ if (opts->system_wide)
+ attr->sample_type |= PERF_SAMPLE_CPU;
+
+ if (opts->sample_id_all_avail &&
+ (opts->sample_time || opts->system_wide ||
+ !opts->no_inherit || opts->cpu_list))
+ attr->sample_type |= PERF_SAMPLE_TIME;
+
+ if (opts->raw_samples) {
+ attr->sample_type |= PERF_SAMPLE_TIME;
+ attr->sample_type |= PERF_SAMPLE_RAW;
+ attr->sample_type |= PERF_SAMPLE_CPU;
+ }
+
+ if (opts->no_delay) {
+ attr->watermark = 0;
+ attr->wakeup_events = 1;
+ }
+
+ attr->mmap = track;
+ attr->comm = track;
+
+ if (opts->target_pid == -1 && opts->target_tid == -1 && !opts->system_wide) {
+ attr->disabled = 1;
+ attr->enable_on_exec = 1;
+ }
+}
+
int perf_evsel__alloc_fd(struct perf_evsel *evsel, int ncpus, int nthreads)
{
int cpu, thread;