linux-kernel - Re: [PATCH 2/2] atomic: move atomic_add

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Date:	Thu, 2 Jun 2011 10:53:18 -0400
From:	Mike Frysinger <vapier.adi@...il.com>
To:	Arun Sharma <asharma@...com>
Cc:	linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...e.hu>,
	David Miller <davem@...emloft.net>,
	Andrew Morton <akpm@...l.org>,
	Eric Dumazet <eric.dumazet@...il.com>
Subject: Re: [PATCH 2/2] atomic: move atomic_add_unless to generic code

On Tue, May 31, 2011 at 17:17, Arun Sharma wrote:
> On 5/31/11 1:21 PM, Mike Frysinger wrote:
>> On Tue, May 31, 2011 at 15:10, Arun Sharma wrote:
>>>
>>> This is in preparation for more generic atomic
>>> primitives based on __atomic_add_unless.
>>
>> i think you might have to have those primitives in place before this
>> patch makes sense.  the only thing this does is hoist a single
>> comparison out of arch atomic.h's and into linux/atomic.h.  this
>> savings alone looks simply like over engineering to me.
>
> Some of the context is buried in the lkml-reference. The main motivation for
> the patch is commit 686a7e3.
>
> The idea is to move atomic_add_unless_return() into linux/atomic.h

my point is that that patchset doesnt seem to exist yet, and it'd
probably make sense to have it ready and part of this series before
attempting to push this.
-mike
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