wait_event(9) [centos man page]

WAIT_EVENT(9)							   Driver Basics						     WAIT_EVENT(9)

NAME

       wait_event - sleep until a condition gets true

SYNOPSIS

       wait_event(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_UNINTERRUPTIBLE) until the condition evaluates to true. The condition is checked each time the waitqueue
       wq is woken up.

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

COPYRIGHT

Kernel Hackers Manual 3.10					     June 2014							     WAIT_EVENT(9)

clear_wait(9r)															    clear_wait(9r)

NAME

       clear_wait - General: Clears the wait condition

SYNOPSIS

       void clear_wait(
	       thread_t thread,
	       int result,
	       boolean_t interrupt_only );

ARGUMENTS

       Specifies  a  pointer  to  the thread Specifies the outcome of the wait. You can pass one of the following values: This is a normal wakeup.
       The timeout period expired.  The clear_wait routine interrupted the wakeup.  Specifies a Boolean value that indicates  how  the	clear_wait
       routine clears the wait condition. You can pass one of the following values: Clears the wait condition only if the kernel thread is waiting
       in an interruptible state.  Clears the wait condition under any circumstances.

DESCRIPTION

       The clear_wait routine clears the wait condition for the specified kernel thread and starts executing the kernel thread, if appropriate. If
       the  kernel  thread is interruptible and is still waiting for the event, clear_wait sets the kernel thread state to TH_RUN and places it on
       the run queue.

RETURN VALUES

       None

SEE ALSO

       Routines: assert_wait_mesg(9r), mpsleep(9r), thread_block(9r), thread_wakeup(9r), thread_wakeup_one(9r)

																    clear_wait(9r)