linux-kernel - Re: [PATCH 0/2] jump label: 2.6.38 updates

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Message-ID: <1297702394.5226.116.camel@laptop>
Date:	Mon, 14 Feb 2011 17:53:14 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	Jason Baron <jbaron@...hat.com>,
	Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>,
	hpa@...or.com, mingo@...e.hu, tglx@...utronix.de,
	andi@...stfloor.org, roland@...hat.com, rth@...hat.com,
	masami.hiramatsu.pt@...achi.com, fweisbec@...il.com,
	avi@...hat.com, davem@...emloft.net, sam@...nborg.org,
	ddaney@...iumnetworks.com, michael@...erman.id.au,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/2] jump label: 2.6.38 updates

On Mon, 2011-02-14 at 11:46 -0500, Steven Rostedt wrote:
> On Mon, 2011-02-14 at 17:37 +0100, Peter Zijlstra wrote:
> 
> > We could of course cheat implement our own version of atomic_read() in
> > order to avoid the whole header mess, but that's not pretty at all
> 
> Oh God please no! ;)
> 
> atomic_read() is implemented per arch.

Ah, but it needn't be:

static inline int atomic_read(atomic_t *a)
{
	return ACCESS_ONCE(a->counter);
}

is basically it.

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