wait_event_freezable — sleep (or freeze) until a condition gets true
wait_event_freezable ( | wq, |
condition) ; |
The process is put to sleep (TASK_INTERRUPTIBLE -- so as not to contribute
to system load) 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.