linux-kernel - Re: linux-next: build failure after merge of the final tree (slab tree related)

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Date:	Wed, 25 Aug 2010 11:57:41 +0300
From:	Pekka Enberg <penberg@...helsinki.fi>
To:	Tejun Heo <tj@...nel.org>
CC:	Christoph Lameter <cl@...ux.com>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: linux-next: build failure after merge of the final tree (slab
 tree related)

On 8/25/10 11:18 AM, Tejun Heo wrote:
> Hello,
>
> On 08/24/2010 08:53 PM, Christoph Lameter wrote:
>>> [    0.000000] Kernel panic - not syncing: Cannot create slab kmem_cache
>>> size=232 realsize=256 order=0 offset=0 flags=42000
>>
>> alloc per cpu result in kmalloc which fails.
>>
>> Tejon: Is there some way we could get a reserved per cpu area under UP
>> instead of fallback to slab allocations during bootup?
>
> Eh... nasty.  Maybe we can create a alloc_percpu_early() function
> which doesn't allow freeing of allocate memory and just redirect to
> bootmem on UP?

Yeah, I was thinking about that too.

				Pekka


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