Re: [git pull] scheduler fixes

Alan Cox
2009-01-31T21:21:28Z

On Sat, 31 Jan 2009 19:08:47 +0100
Peter Zijlstra <peterz@infradead.org> wrote:

> On Sat, 2009-01-31 at 20:49 +0300, Alexey Zaytsev wrote:
> >
> > And answering an earlier question, this happens only on i386 and only
> > with 4K stacks because x86_64 dosn't have a separate softirq stack,
> > so the preempt count diring the soft irq is at least IRQ_EXIT_OFFSET.
>
> What do the other 30 odd architectures that Linux supports do? Is i386
> 4k really the _only_ with separate softirq stacks?

x86-64 and some of the other platforms could do with IRQ stacks but that
is another story.