WAIT_EVENT_INTERRUPT(9)                   Driver Basics                   WAIT_EVENT_INTERRUPT(9)



NAME
       wait_event_interruptible_locked - sleep until a condition gets true

SYNOPSIS
       wait_event_interruptible_locked(wq, condition);

ARGUMENTS
       wq
           the waitqueue to wait on

       condition
           a C expression for the event to wait for

DESCRIPTION
       The process is put to sleep (TASK_INTERRUPTIBLE) until the condition evaluates to true or
       a signal is received. The condition is checked each time the waitqueue wq is woken up.

       It must be called with wq.lock being held. This spinlock is unlocked while sleeping but
       condition testing is done while lock is held and when this macro exits the lock is held.

       The lock is locked/unlocked using spin_lock/spin_unlock functions which must match the way
       they are locked/unlocked outside of this macro.

       wake_up_locked has to be called after changing any variable that could change the result
       of the wait condition.

       The function will return -ERESTARTSYS if it was interrupted by a signal and 0 if condition
       evaluated to true.

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