WAIT_EVENT_KILLABLE

Section: Driver Basics (9)
Updated: February 2011
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NAME

wait_event_killable - sleep until a condition gets true  

SYNOPSIS

wait_event_killable(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_KILLABLE) until the condition evaluates to true or a signal is received. 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.

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

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