On Wed, 2007-06-13 at 02:04 +0200, Bernhard Kuhn wrote:

Peter Feuerer wrote:

quoted

is it possible to catch e.g. the interrupt of the Parallelport (IRQ7 in
my case) in userspace with a RT-Rreempt patched kernel?

A very simple solution would be to create a small kernel device driver
that implements a blocking read function that always gets woken up
by the parport interrupt service routine, then sending one dummy byte.

That would be a very fast and easy to implement solution, but then I
have to touch the kernel again. I wanted not to do that.

But i guess a better variant would be to adopt the IIO framework
for your purpose (http://lkml.org/lkml/2006/8/30/22)

Great, seems like that's what I'm searching for. I will have a deeper
look into this. Because if this is going to be in the mainline kernel, I
don't have to touch the kernel at all.
Thanks.

regards,
--peter