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WAIT_EVENT_INTERRUPT(9) Driver Basics WAIT_EVENT_INTERRUPT(9)

NAME

wait_event_interruptible_hrtimeout - sleep until a condition gets true or a timeout elapses

SYNOPSIS

wait_event_interruptible_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_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.

COPYRIGHT

February 2017 Kernel Hackers Manual 3.16