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Date:	Tue, 20 Oct 2009 09:11:38 +0200
From:	Eric Dumazet <>
To:	Ingo Molnar <>
CC:	Jiri Kosina <>, Jeff Mahoney <>,
	Peter Zijlstra <>,
	Linux Kernel Mailing List <>,
	Tony Luck <>,
	Fenghua Yu <>,
Subject: Re: Commit 34d76c41 causes linker errors on ia64 with NR_CPUS=4096

Ingo Molnar a écrit :
> Still looks like a bug if it causes a breakage (linker error) on IA64, 
> and if the 'fix' (i'd call it a workaround) causes a (small but nonzero) 
> performance regression on other architectures.

True, but this also save some amount of ram for some distro kernels.

If we keep this static NR_CPUS thing, we might be able to free
the end of table, for other per_cpu users ?

if (nr_cpus_ids < NR_CPUS) {
				 sizeof(long)*(NR_CPUS - nr_cpus_ids));

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