From: Pekka J Enberg <penberg@cs.Helsinki.FI>
To: Christoph Lameter <clameter@sgi.com>
Cc: Manfred Spraul <manfred@colorfullife.com>,
Heiko Carstens <heiko.carstens@de.ibm.com>,
Andrew Morton <akpm@osdl.org>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
Martin Schwidefsky <schwidefsky@de.ibm.com>
Subject: Re: [patch 2/2] slab: always consider arch mandated alignment
Date: Thu, 27 Jul 2006 07:24:38 +0300 (EEST) [thread overview]
Message-ID: <Pine.LNX.4.58.0607270720400.28514@sbz-30.cs.Helsinki.FI> (raw)
In-Reply-To: <Pine.LNX.4.64.0607261229430.7132@schroedinger.engr.sgi.com>
On Wed, 26 Jul 2006, Christoph Lameter wrote:
> A slab user is setting alignment in order to optimize performance not for
> correctness. Most users that I know of can live with misalignments. If
> that would not be the case then this code would never have worked.
No, caller and architecture mandated alignment is set for correctness. The
slab allocator can already optimize for performance on its own
(SLAB_HWCACHE_ALIGN).
Pekka
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prev parent reply other threads:[~2006-07-27 4:24 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20060722110601.GA9572@osiris.boeblingen.de.ibm.com>
[not found] ` <Pine.LNX.4.64.0607220748160.13737@schroedinger.engr.sgi.com>
[not found] ` <20060722162607.GA10550@osiris.ibm.com>
[not found] ` <Pine.LNX.4.64.0607221241130.14513@schroedinger.engr.sgi.com>
[not found] ` <20060723073500.GA10556@osiris.ibm.com>
[not found] ` <Pine.LNX.4.64.0607230558560.15651@schroedinger.engr.sgi.com>
[not found] ` <20060723162427.GA10553@osiris.ibm.com>
2006-07-26 8:50 ` [patch 1/2] slab: always consider caller " Heiko Carstens, Heiko Carstens
2006-07-26 8:51 ` [patch 2/2] slab: always consider arch " Heiko Carstens, Heiko Carstens
2006-07-26 10:05 ` Pekka J Enberg
2006-07-26 10:13 ` Heiko Carstens
2006-07-26 10:37 ` Pekka J Enberg
2006-07-26 10:52 ` Heiko Carstens
2006-07-26 11:16 ` Pekka J Enberg
2006-07-26 11:26 ` Heiko Carstens
2006-07-26 18:06 ` Manfred Spraul
2006-07-26 18:19 ` Christoph Lameter
2006-07-26 18:45 ` Manfred Spraul
2006-07-26 18:59 ` Christoph Lameter
2006-07-26 19:28 ` Manfred Spraul
2006-07-26 19:31 ` Christoph Lameter
2006-07-26 19:37 ` Manfred Spraul
2006-07-26 19:47 ` Christoph Lameter
2006-07-27 5:33 ` Pekka J Enberg
2006-07-27 5:47 ` Pekka J Enberg
2006-07-27 4:24 ` Pekka J Enberg [this message]
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