FUTEX_LOCK_PI_ATOMIC(9)                Futex API reference                FUTEX_LOCK_PI_ATOMIC(9)



NAME
       futex_lock_pi_atomic - Atomic work required to acquire a pi aware futex

SYNOPSIS
       int futex_lock_pi_atomic(u32 __user * uaddr, struct futex_hash_bucket * hb,
                                union futex_key * key, struct futex_pi_state ** ps,
                                struct task_struct * task, int set_waiters);

ARGUMENTS
       uaddr
           the pi futex user address

       hb
           the pi futex hash bucket

       key
           the futex key associated with uaddr and hb

       ps
           the pi_state pointer where we store the result of the lookup

       task
           the task to perform the atomic lock work for. This will be “current” except in the
           case of requeue pi.

       set_waiters
           force setting the FUTEX_WAITERS bit (1) or not (0)

RETURN
       0 - ready to wait; 1 - acquired the lock; <0 - error

       The hb->lock and futex_key refs shall be held by the caller.

AUTHOR
       Rusty Russell <rusty AT rustcorp.au>
           Author.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                   FUTEX_LOCK_PI_ATOMIC(9)