pub fn sys_perf_event_open(
locked: &mut Locked<Unlocked>,
current_task: &CurrentTask,
attr: UserRef<perf_event_attr>,
tid: tid_t,
cpu: i32,
group_fd: FdNumber,
_flags: u64,
) -> Result<SyscallResult, Errno>pub fn sys_perf_event_open(
locked: &mut Locked<Unlocked>,
current_task: &CurrentTask,
attr: UserRef<perf_event_attr>,
tid: tid_t,
cpu: i32,
group_fd: FdNumber,
_flags: u64,
) -> Result<SyscallResult, Errno>