Messages in this thread | | | Date | Fri, 27 Feb 2004 12:04:33 +0000 | From | Christoph Hellwig <> | Subject | Re: Why no interrupt priorities? |
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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.
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