kernel/futex/waitwake.c

153  * Wake up waiters matching bitset queued on this futex (uaddr).
155 int futex_wake(u32 __user *uaddr, unsigned int flags, int nr_wake, u32 bitset)
166 	ret = get_futex_key(uaddr, flags, &key, FUTEX_READ);
203 static int futex_atomic_op_inuser(unsigned int encoded_op, u32 __user *uaddr)
226 	ret = arch_futex_atomic_op_inuser(op, oparg, &oldval, uaddr);
440 		ret = get_futex_key(u64_to_user_ptr(vs[i].w.uaddr),
451 		u32 __user *uaddr = (u32 __user *)(unsigned long)vs[i].w.uaddr;
456 		ret = futex_get_value_locked(&uval, uaddr);
488 			if (get_user(uval, uaddr))
578  * @uaddr:	the futex userspace address
589  *  -  0 - uaddr contains val and hb has been locked;
590  *  - <1 - -EFAULT or -EWOULDBLOCK (uaddr does not contain val) and hb is unlocked
592 int futex_wait_setup(u32 __user *uaddr, u32 val, unsigned int flags,
607 	 * any cond.  If we locked the hash-bucket after testing *uaddr, that
612 	 * after testing *uaddr.  This guarantees that futex_wait() will NOT
613 	 * absorb a wakeup if *uaddr does not match the desired values
617 	ret = get_futex_key(uaddr, flags, &q->key, FUTEX_READ);
624 	ret = futex_get_value_locked(&uval, uaddr);
629 		ret = get_user(uval, uaddr);
647 int __futex_wait(u32 __user *uaddr, unsigned int flags, u32 val,
661 	 * Prepare to wait on uaddr. On success, it holds hb->lock and q
664 	ret = futex_wait_setup(uaddr, val, flags, &q, &hb);
688 int futex_wait(u32 __user *uaddr, unsigned int flags, u32 val, ktime_t *abs_time, u32 bitset)
697 	ret = __futex_wait(uaddr, flags, val, to, bitset);
708 		restart->futex.uaddr = uaddr;
722 	u32 __user *uaddr = restart->futex.uaddr;
731 	return (long)futex_wait(uaddr, restart->futex.flags,