Function sys_futex_wake

#[unsafe(no_mangle)]
pub unsafe extern "C" fn sys_futex_wake(
    address: *mut u32,
    count: i32,
) -> i32

Like synch::futex_wake, but does extra sanity checks.

Returns -EINVAL if address is null. address is used only for its address. It is safe to pass a dangling pointer.