> On Wed, Apr 17, 2002 at 12:03:19PM +0200, Andre.Messerschmidt@infineon.com wrote:
>
> > Does anybody else have problems using wait queues in a 2.4.5 MIPS kernel?
> > When I try to wake up a process from an interrupt it won't start to execute.
> > It always waits for the timeout before resuming work.
> > In principal my code look like this:
> >
> > wait_queue_head_t wq;
> >
> > foo() {
> > init_waitqueue_head(&wq);
> > interruptible_sleep_on_timeout(&wq,10*HZ);
> > }
> >
> > foo_int() {
> > wake_up_interuptible(&wq);
> > }
> >
> > Am I missing something?
On Thu, 18 Apr 2002, Ralf Baechle wrote:
> A bad race condition in that code. If foo_int is called before your process
> had a chance to get to sleep it'll never be woken before the timeout.
That reminds me :-)
I have looked around for a version of wait_event_interruptible() that
has a timeout (starting my search in sched.h of course). Before I get
around to writing my own, does anyone have one already?
Thanks,
-Richard
