event_open_with_options
return event_open_with_options(e, PERF_CURRENT_PID, PERF_NO_CPU, group_fd);
return event_open_with_options(e, pid, PERF_NO_CPU, PERF_NO_GROUP);
return event_open_with_options(e, PERF_NO_PID, cpu, PERF_NO_GROUP);
return event_open_with_options(e, PERF_CURRENT_PID, PERF_NO_CPU, PERF_NO_GROUP);
int event_open_with_options(struct event *e, pid_t pid, int cpu, int group_fd);