From: Christian Borntraeger <borntraeger@de.ibm.com>
Organization: IBM
To: Avi Kivity <avi@redhat.com>
Subject: Re: [PATCH] sched: Optimize branch hint in context_switch()
Date: Mon, 30 Nov 2009 10:25:36 +0100
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Cc: Peter Zijlstra <peterz@infradead.org>, Tim Blechmann <tim@klingt.org>,
       linux-kernel@vger.kernel.org, Ingo Molnar <mingo@elte.hu>,
       Thomas Gleixner <tglx@linutronix.de>
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Am Sonntag 29 November 2009 16:25:43 schrieb Avi Kivity:
> These should be documented then to avoid patches removing them:
> 
>       #define slowpath(x) unlikely(x)
> 
>       if (slowpath(condition))
>             expensive_operation();

Neat. If we also modify the likelyhood tracer to __not__ check the
slowpath annotation by default this really looks like a good idea.

Christian
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