linux-kernel - Re: [Bug #14467] Linker errors on ia64 with NR

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Message-ID: <alpine.DEB.1.10.0910291517160.30265@V090114053VZO-1>
Date:	Thu, 29 Oct 2009 15:18:24 -0400 (EDT)
From:	Christoph Lameter <cl@...ux-foundation.org>
To:	Tejun Heo <tj@...nel.org>
cc:	Jiri Kosina <jkosina@...e.cz>, "Rafael J. Wysocki" <rjw@...k.pl>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Kernel Testers List <kernel-testers@...r.kernel.org>,
	Ingo Molnar <mingo@...e.hu>, Jeff Mahoney <jeffm@...e.com>,
	"Luck, Tony" <tony.luck@...el.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Peter Zijlstra <peterz@...radead.org>
Subject: Re: [Bug #14467] Linker errors on ia64 with NR_CPUS=4096

On Thu, 29 Oct 2009, Tejun Heo wrote:

> That would be nice but currently, we have no user which needs anything
> other than GFP_KERNEL although lack of users could have been caused by
> the lack of the functionality and the non-atomic irq disabled state is
> an exception case which is handled differently by might_sleep() too.
> So, I'm not sure whether adding GFP_* parameter would worth the
> effort.  Also, adding that is a bit too late for 2.6.32 at this point.

As I have said repeately before: We need this for dynamic DMA slab
creation in SLUB. Since you got it already halfway in: Complete it and I
can get rid of the static percpu definitions that I had to add to be able
to use the new percpu allocator.

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