Subject: Re: QUESTION: to block or not to block interrupts
To: Dr. Magnus Sethson <>
From: Manuel Bouyer <>
List: tech-kern
Date: 11/14/2001 20:29:16
On Tue, Nov 13, 2001 at 10:58:42PM +0100, Dr. Magnus Sethson wrote:
> Thanks Pete!
> Your answer addresses the main thing I tried to achieve. I guess it is not 
> that easy to implement an easy "workaround" for that quing of interrupts, 
> like a shortcut for some special interrupts. And still it would be highlly 
> unpredictable how long time every queue would take to service.
> But on the other hand if I keep the interrupts to a minimum then the NetBSD 
> kernel is somehow relative predicatble in terms of guaranteed interrupt 
> service, right?
> So for some low sampling applications the kernel might work as it is, by 
> blocking some other interrupts. How do I block interrupts, is that done 
> through standard kernel function calls? This sound more like an device 
> driver issue, right?

See spl() - there is a man page for it.

Manuel Bouyer <>