34  * @uaddr:	address of first futex
36  * @val:	typically expected value of uaddr, but varies by op
51 futex_syscall(volatile u_int32_t *uaddr, int op, u_int32_t val, struct timespec *timeout,  in futex_syscall()  argument
54 	return syscall(SYS_futex, uaddr, op | opflags, val, timeout, uaddr2, val3);  in futex_syscall()
58 futex_syscall_nr_requeue(volatile u_int32_t *uaddr, int op, u_int32_t val, int nr_requeue,  in futex_syscall_nr_requeue()  argument
61 	return syscall(SYS_futex, uaddr, op | opflags, val, nr_requeue, uaddr2, val3);  in futex_syscall_nr_requeue()
65  * futex_wait() - block on uaddr with optional timeout
69 futex_wait(u_int32_t *uaddr, u_int32_t val, struct timespec *timeout, int opflags)  in futex_wait()  argument
71 	return futex_syscall(uaddr, FUTEX_WAIT, val, timeout, NULL, 0, opflags);  in futex_wait()
75  * futex_wake() - wake one or more tasks blocked on uaddr
79 futex_wake(u_int32_t *uaddr, int nr_wake, int opflags)  in futex_wake()  argument
81 	return futex_syscall(uaddr, FUTEX_WAKE, nr_wake, NULL, NULL, 0, opflags);  in futex_wake()
85  * futex_lock_pi() - block on uaddr as a PI mutex
88 futex_lock_pi(u_int32_t *uaddr, struct timespec *timeout, int opflags)  in futex_lock_pi()  argument
90 	return futex_syscall(uaddr, FUTEX_LOCK_PI, 0, timeout, NULL, 0, opflags);  in futex_lock_pi()
94  * futex_unlock_pi() - release uaddr as a PI mutex, waking the top waiter
97 futex_unlock_pi(u_int32_t *uaddr, int opflags)  in futex_unlock_pi()  argument
99 	return futex_syscall(uaddr, FUTEX_UNLOCK_PI, 0, NULL, NULL, 0, opflags);  in futex_unlock_pi()
103 * futex_cmp_requeue() - requeue tasks from uaddr to uaddr2
108 futex_cmp_requeue(u_int32_t *uaddr, u_int32_t val, u_int32_t *uaddr2, int nr_wake,  in futex_cmp_requeue()  argument
111 	return futex_syscall_nr_requeue(uaddr, FUTEX_CMP_REQUEUE, nr_wake, nr_requeue, uaddr2,  in futex_cmp_requeue()
116  * futex_wait_requeue_pi() - block on uaddr and prepare to requeue to uaddr2
117  * @uaddr:	non-PI futex source
124 futex_wait_requeue_pi(u_int32_t *uaddr, u_int32_t val, u_int32_t *uaddr2,  in futex_wait_requeue_pi()  argument
127 	return futex_syscall(uaddr, FUTEX_WAIT_REQUEUE_PI, val, timeout, uaddr2, 0,  in futex_wait_requeue_pi()
132  * futex_cmp_requeue_pi() - requeue tasks from uaddr to uaddr2
133  * @uaddr:	non-PI futex source
141 futex_cmp_requeue_pi(u_int32_t *uaddr, u_int32_t val, u_int32_t *uaddr2,  in futex_cmp_requeue_pi()  argument
144 	return futex_syscall_nr_requeue(uaddr, FUTEX_CMP_REQUEUE_PI, 1, nr_requeue, uaddr2,  in futex_cmp_requeue_pi()