Subject: Re: [PATCH 0/2] jump label: 2.6.38 updates
From: Peter Zijlstra <peterz@infradead.org>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: Jason Baron <jbaron@redhat.com>,
        Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>, hpa@zytor.com,
        mingo@elte.hu, tglx@linutronix.de, andi@firstfloor.org,
        roland@redhat.com, rth@redhat.com, masami.hiramatsu.pt@hitachi.com,
        fweisbec@gmail.com, avi@redhat.com, davem@davemloft.net,
        sam@ravnborg.org, ddaney@caviumnetworks.com, michael@ellerman.id.au,
        linux-kernel@vger.kernel.org
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Date: Mon, 14 Feb 2011 17:53:14 +0100
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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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