linux-kernel - Re: [PATCH 0/4][RFC] jump label: introduce default true branch

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Message-ID: <1324496980.17070.1.camel@twins>
Date:	Wed, 21 Dec 2011 20:49:40 +0100
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Jason Baron <jbaron@...hat.com>
Cc:	rostedt@...dmis.org, mathieu.desnoyers@...icios.com, hpa@...or.com,
	mingo@...e.hu, davem@...emloft.net, ddaney.cavm@...il.com,
	pjt@...gle.com, rth@...hat.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/4][RFC] jump label: introduce default true branch

On Wed, 2011-12-21 at 14:09 -0500, Jason Baron wrote:
> Hi Peter,
> 
> I've introduced a new static_branch_def_true() construct, such that the straight
> line path is the true branch, and we patch a jump to get to the false branch.

> I think this patch series should address the issues that came up with sched_feat()
> implementation.

Nice trick, I've only casually read patch 1 because my brain gave up for
the day, but I'll have a closer look tomorrow.


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