linux-kernel - Re: [PATCH 1/4] mm: Move ARCH_SLAB_MINALIGN and ARCH_KMALLOC_MINALIGN to <linux/slab

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Message-ID: <4BF56827.6070507@colorfullife.com>
Date:	Thu, 20 May 2010 18:49:43 +0200
From:	Manfred Spraul <manfred@...orfullife.com>
To:	David Woodhouse <dwmw2@...radead.org>
CC:	Johannes Stezenbach <js@...21.net>,
	Herbert Xu <herbert@...dor.hengli.com.au>,
	David Miller <davem@...emloft.net>, penberg@...helsinki.fi,
	mpm@...enic.com, ken@...elabs.ch, geert@...ux-m68k.org,
	michael-dev@...i-braun.de, linux-kernel@...r.kernel.org,
	linux-crypto@...r.kernel.org, anemo@....ocn.ne.jp
Subject: Re: [PATCH 1/4] mm: Move ARCH_SLAB_MINALIGN and ARCH_KMALLOC_MINALIGN
 to <linux/slab_def.h>

On 05/19/2010 08:10 PM, David Woodhouse wrote:
>> * Unless debug options are enabled, the kernel uses cache_line_size()
>> automatically.
>>      
> ... that's a lie.
>
>    
You are right, I didn't notice that there are now 8 and 16-byte kmalloc 
caches.

Apart from that:

KMALLOC_FLAGS is SLAB_HWCACHE_ALIGN.
SLAB_HWCACHE_ALIGN defaults the alignment to cache_line_size().


Did I overlook anything else?

--
     Manfred
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