Date: Wed, 24 Oct 2012 17:33:59 +0200
From: Andi Kleen <andi@firstfloor.org>
To: Christoph Lameter <cl@linux.com>
Cc: andi@firstfloor.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org,
        Joonsoo Kim <js1304@gmail.com>, David Rientjes <rientjes@google.com>,
        Pekka Enberg <penberg@kernel.org>,
        Glauber Costa <glommer@parallels.com>
Subject: Re: [PATCH v2 1/2] kmem_cache: include allocators code directly into slab_common
Message-ID: <20121024153359.GK16230@one.firstfloor.org>
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On Wed, Oct 24, 2012 at 02:29:09PM +0000, Christoph Lameter wrote:
> On Wed, 24 Oct 2012, Glauber Costa wrote:
> 
> > Because of that, we either have to move all the entry points to the
> > mm/slab.h and rely heavily on the pre-processor, or include all .c files
> > in here.
> 
> Hmm... That is a bit of a radical solution. The global optimizations now
> possible with the new gcc compiler include the ability to fold functions
> across different linkable objects. Andi, is that usable for kernel builds?

Yes, but you need a fairly large patchkit which is not mainline yet.

https://github.com/andikleen/linux-misc/tree/lto

-Andi
-- 
ak@linux.intel.com -- Speaking for myself only.
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