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

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Message-ID: <alpine.DEB.1.10.0910271623210.20363@V090114053VZO-1>
Date:	Tue, 27 Oct 2009 16:28:03 -0400 (EDT)
From:	Christoph Lameter <cl@...ux-foundation.org>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
cc:	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>,
	Jiri Kosina <jkosina@...e.cz>,
	"Luck, Tony" <tony.luck@...el.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Peter Zijlstra <peterz@...radead.org>,
	Tejun Heo <tj@...nel.org>
Subject: Re: [Bug #14467] Linker errors on ia64 with NR_CPUS=4096

The NR_CPUS array in the percpu section needs to be removed.

A simple fix would be to allocate the rq_weight per cpu array
dynamically.

The large per cpu array was introduced as a fix to a race condition. Maybe
there is another way of dealing with this issue that does not require
large per cpu arrays?



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