Re: Why no interrupt priorities?

[Christoph Hellwig]

On Thu, Feb 26, 2004 at 11:05:07AM -0800, Tim Bird wrote:
> What's the rationale for not supporting interrupt priorities
> in the kernel?

What do you actually want to do them?  Linux doesn't do the traditional
unix spl scheme for coplexity and performance reasons, see

www.usenix.org/publications/library/proceedings/ana97/full_papers/small/small.ps

for a related paper.  Give that linux hardirq handlers should be very small
there's no performance gain in that area for sane architectures, too.

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/