WAIT_EVENT_HRTIMEOUT(9) Driver Basics WAIT_EVENT_HRTIMEOUT(9)NAMEwait_event_hrtimeout - sleep until a condition gets true or a timeout
elapses
SYNOPSIS
wait_event_hrtimeout(wq, condition, timeout);
ARGUMENTS
wq
the waitqueue to wait on
condition
a C expression for the event to wait for
timeout
timeout, as a ktime_t
DESCRIPTION
The process is put to sleep (TASK_UNINTERRUPTIBLE) 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 returns 0 if condition became true, or -ETIME if the
timeout elapsed.
COPYRIGHTKernel Hackers Manual 3.11 November 2013 WAIT_EVENT_HRTIMEOUT(9)