From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: linux-next: build failure after merge of the final tree (slab tree related) Date: Wed, 25 Aug 2010 10:18:31 +0200 Message-ID: <4C74D1D7.4080608@kernel.org> References: <20100824120714.8918f8de.sfr@canb.auug.org.au> <4C740450.3030000@cs.helsinki.fi> <4C741029.7090300@cs.helsinki.fi> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from hera.kernel.org ([140.211.167.34]:39725 "EHLO hera.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752225Ab0HYIYU (ORCPT ); Wed, 25 Aug 2010 04:24:20 -0400 In-Reply-To: Sender: linux-next-owner@vger.kernel.org List-ID: To: Christoph Lameter Cc: Pekka Enberg , Stephen Rothwell , linux-next@vger.kernel.org, linux-kernel@vger.kernel.org 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? -- tejun