wait_event_interruptible_hrtimeout (9)

wait_event_interruptible_hrtimeout(wq, condition, timeout);

wq

the waitqueue to wait on

condition

a C expression for the event to wait for

timeout

timeout, as a ktime_t

The process is put to sleep (TASK_INTERRUPTIBLE) 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, -ERESTARTSYS if it was interrupted by a signal, or -ETIME if the timeout elapsed.