evsel__open_per_cpu_and_thread
return evsel__open_per_cpu_and_thread(evsel, evsel__cpus(evsel), cpu_map_idx,
int ret = evsel__open_per_cpu_and_thread(evsel, cpus, cpu_map_idx, threads);
int ret = evsel__open_per_cpu_and_thread(evsel, cpus, -1, threads);
int evsel__open_per_cpu_and_thread(struct evsel *evsel,