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Subject: Re: [PATCH 4/4] futex: Add FUTEX_LOCK with optional adaptive
 spinning
From: Peter Zijlstra <peterz@infradead.org>
To: Thomas Gleixner <tglx@linutronix.de>
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Date: Fri, 07 May 2010 18:24:51 +0200
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On Fri, 2010-05-07 at 18:20 +0200, Thomas Gleixner wrote:
> +               if (!owner->oncpu)

can't do that, that relies on __ARCH_WANT_UNLOCKED_CTXSW

Please keep the code as near mutex_spin_on_owner() as possible.