From: Andi Kleen <andi@firstfloor.org>
To: Christoph Lameter <cl@linux.com>
Cc: andi@firstfloor.org, Pekka Enberg <penberg@kernel.org>,
Glauber Costa <glommer@parallels.com>,
linux-mm@kvack.org, JoonSoo Kim <js1304@gmail.com>,
linux-kernel@vger.kernel.org,
David Rientjes <rientjes@google.com>
Subject: Re: [PATCH v2 1/2] kmem_cache: include allocators code directly into slab_common
Date: Tue, 30 Oct 2012 21:27:50 +0100 [thread overview]
Message-ID: <20121030202750.GW16230@one.firstfloor.org> (raw)
In-Reply-To: <0000013ab24cd7ac-1c5345d6-5fea-4459-942e-b6deccd1a6f1-000000@email.amazonses.com>
On Tue, Oct 30, 2012 at 03:31:51PM +0000, Christoph Lameter wrote:
> On Fri, 26 Oct 2012, JoonSoo Kim wrote:
>
> > 2012/10/25 Christoph Lameter <cl@linux.com>:
> > > On Wed, 24 Oct 2012, Pekka Enberg wrote:
> > >
> > >> So I hate this patch with a passion. We don't have any fastpaths in
> > >> mm/slab_common.c nor should we. Those should be allocator specific.
> > >
> > > I have similar thoughts on the issue. Lets keep the fast paths allocator
> > > specific until we find a better way to handle this issue.
> >
> > Okay. I see.
> > How about applying LTO not to the whole kernel code, but just to
> > slab_common.o + sl[aou]b.o?
> > I think that it may be possible, isn't it?
>
> Well.... Andi: Is that possible?
In principle yes, but would still need a toolchain with LTO
support and a few changes.
-Andi
--
ak@linux.intel.com -- Speaking for myself only.
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WARNING: multiple messages have this Message-ID (diff)
From: Andi Kleen <andi@firstfloor.org>
To: Christoph Lameter <cl@linux.com>
Cc: andi@firstfloor.org, Pekka Enberg <penberg@kernel.org>,
Glauber Costa <glommer@parallels.com>,
linux-mm@kvack.org, JoonSoo Kim <js1304@gmail.com>,
linux-kernel@vger.kernel.org,
David Rientjes <rientjes@google.com>
Subject: Re: [PATCH v2 1/2] kmem_cache: include allocators code directly into slab_common
Date: Tue, 30 Oct 2012 21:27:50 +0100 [thread overview]
Message-ID: <20121030202750.GW16230@one.firstfloor.org> (raw)
In-Reply-To: <0000013ab24cd7ac-1c5345d6-5fea-4459-942e-b6deccd1a6f1-000000@email.amazonses.com>
On Tue, Oct 30, 2012 at 03:31:51PM +0000, Christoph Lameter wrote:
> On Fri, 26 Oct 2012, JoonSoo Kim wrote:
>
> > 2012/10/25 Christoph Lameter <cl@linux.com>:
> > > On Wed, 24 Oct 2012, Pekka Enberg wrote:
> > >
> > >> So I hate this patch with a passion. We don't have any fastpaths in
> > >> mm/slab_common.c nor should we. Those should be allocator specific.
> > >
> > > I have similar thoughts on the issue. Lets keep the fast paths allocator
> > > specific until we find a better way to handle this issue.
> >
> > Okay. I see.
> > How about applying LTO not to the whole kernel code, but just to
> > slab_common.o + sl[aou]b.o?
> > I think that it may be possible, isn't it?
>
> Well.... Andi: Is that possible?
In principle yes, but would still need a toolchain with LTO
support and a few changes.
-Andi
--
ak@linux.intel.com -- Speaking for myself only.
next prev parent reply other threads:[~2012-10-30 20:27 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-24 13:59 [PATCH v2 0/2] common entry point for kmem_cache_free Glauber Costa
2012-10-24 13:59 ` Glauber Costa
2012-10-24 13:59 ` [PATCH v2 1/2] kmem_cache: include allocators code directly into slab_common Glauber Costa
2012-10-24 13:59 ` Glauber Costa
2012-10-24 14:29 ` Christoph Lameter
2012-10-24 14:29 ` Christoph Lameter
2012-10-24 14:35 ` Glauber Costa
2012-10-24 14:35 ` Glauber Costa
2012-10-24 17:29 ` JoonSoo Kim
2012-10-24 17:29 ` JoonSoo Kim
2012-10-24 15:33 ` Andi Kleen
2012-10-24 15:33 ` Andi Kleen
2012-10-24 18:02 ` Pekka Enberg
2012-10-24 18:02 ` Pekka Enberg
2012-10-24 19:34 ` Christoph Lameter
2012-10-24 19:34 ` Christoph Lameter
2012-10-26 14:15 ` JoonSoo Kim
2012-10-26 14:15 ` JoonSoo Kim
2012-10-30 15:31 ` Christoph Lameter
2012-10-30 15:31 ` Christoph Lameter
2012-10-30 15:35 ` Glauber Costa
2012-10-30 15:35 ` Glauber Costa
2012-10-30 20:27 ` Andi Kleen [this message]
2012-10-30 20:27 ` Andi Kleen
2012-10-24 13:59 ` [PATCH v2 2/2] slab: move kmem_cache_free to common code Glauber Costa
2012-10-24 13:59 ` Glauber Costa
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