linux-kernel - Re: [GIT] Sparc

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Message-Id: <20141027.184327.1734954193920971940.davem@davemloft.net>
Date:	Mon, 27 Oct 2014 18:43:27 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	akpm@...ux-foundation.org
Cc:	torvalds@...ux-foundation.org, sparclinux@...r.kernel.org,
	linux-kernel@...r.kernel.org, steve.capper@...aro.org
Subject: Re: [GIT] Sparc

From: Andrew Morton <akpm@...ux-foundation.org>
Date: Mon, 27 Oct 2014 14:09:38 -0700

> Perhaps sparc should be defining CONFIG_HAVE_GENERIC_RCU_GUP.
> 
> We really should switch x86 to the generic version - from a quick read
> it looks like it will work without needing any changes.
> 
> Steve, thoughts?

We need to add the necessary hooks to the generic code so that x86
doesn't so specualtive gets and instead do direct increments,
otherwise it's a performance regression, and then sparc can make use
of that as well.
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