From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752498Ab0HYIYW (ORCPT ); Wed, 25 Aug 2010 04:24:22 -0400 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 Message-ID: <4C74D1D7.4080608@kernel.org> Date: Wed, 25 Aug 2010 10:18:31 +0200 From: Tejun Heo User-Agent: Mozilla/5.0 (X11; U; Linux i686 (x86_64); en-US; rv:1.9.2.8) Gecko/20100802 Thunderbird/3.1.2 MIME-Version: 1.0 To: Christoph Lameter CC: Pekka Enberg , Stephen Rothwell , linux-next@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: linux-next: build failure after merge of the final tree (slab tree related) References: <20100824120714.8918f8de.sfr@canb.auug.org.au> <4C740450.3030000@cs.helsinki.fi> <4C741029.7090300@cs.helsinki.fi> In-Reply-To: X-Enigmail-Version: 1.1.1 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.3 (hera.kernel.org [127.0.0.1]); Wed, 25 Aug 2010 08:23:48 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: 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