From mboxrd@z Thu Jan  1 00:00:00 1970
From: linux@arm.linux.org.uk (Russell King - ARM Linux)
Date: Sun, 29 May 2011 11:26:59 +0100
Subject: [BUG] "sched: Remove rq->lock from the first half of ttwu()"
	locks up on ARM
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	<20110526125007.GA27083@elte.hu>
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	<20110527120629.GA32617@elte.hu>
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Message-ID: <20110529102659.GY24876@n2100.arm.linux.org.uk>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

On Sun, May 29, 2011 at 11:21:19AM +0100, Catalin Marinas wrote:
> To avoid extra per-thread flags, we could set a per-cpu variable in
> switch_mm() so that we know what to switch the page tables to in the
> post-switch hook.

Why do we need to add more per-cpu stuff when we already have easy access
to the thread flags?