WAIT_EVENT

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

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