I am now working to implement the device polling system on
NetBSD.  The project page is at:

http://thir.org/thir/NetBSD/devicepolling.en.html

The patch is still based on FreeBSD's one.  But I now start
to select the way of implementation of it and so on.
Fortunately my patch seems to work well.

Comments?

-- 
  Takahiro Igarashi