On Fri, Feb 03, 2006 at 03:06:16PM -0800, Christoph Lameter wrote:
> On Fri, 3 Feb 2006, Andrew Morton wrote:
>
> > Could you please redo/retest these patches so that they apply on
> > 2.6.16-rc2. Also, please arrange for any bugfixes to be staged ahead of
> > any optimisations - the optimisations we can defer until 2.6.17.
>
> It seems that these two things are tightly connected. By changing the
> locking he was able to address the hotplug breakage.
Yes, they are. The cachep->spinlock goes away at many places due to the
colour_next patch and keeping the l3 around. (we should not have called that
optimization I guess :)), and the irq disabling had to be moved to the
l3 lock anyways. Maybe I could have done away with patch 2 (merged it with
patch3), but I thought keeping them seperate made it readable ....
Patchset against rc2 follows.
Thanks,
Kiran
PS: Many hotplug fixes are yet to be applied upstream I think. I know
these slab patches work well with mm4 (with the x86_64 subtree and hotplug
fixes in there) but I cannot really test cpu_up after cpu_down on rc2
because it is broken as of now (pending merges, I guess).
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