Date: Thu, 26 May 2011 14:26:23 +0200
From: Ingo Molnar <mingo@elte.hu>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Marc Zyngier <Marc.Zyngier@arm.com>, Yong Zhang <yong.zhang0@gmail.com>,
        Frank Rowand <frank.rowand@am.sony.com>, linux-kernel@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org, Oleg Nesterov <oleg@redhat.com>
Subject: Re: [BUG] "sched: Remove rq->lock from the first half of ttwu()"
 locks up on ARM
Message-ID: <20110526122623.GA11875@elte.hu>
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* Peter Zijlstra <peterz@infradead.org> wrote:

> Sort this by reverting to the old behaviour for this situation and 
> perform a full remote wake-up.

Btw., ARM should consider switching most of its subarchitectures to 
!__ARCH_WANT_INTERRUPTS_ON_CTXSW - enabling irqs during context 
switches is silly and now expensive as well.

Thanks,

	Ingo
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