From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753695AbbAUOLt (ORCPT ); Wed, 21 Jan 2015 09:11:49 -0500 Received: from cantor2.suse.de ([195.135.220.15]:54157 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753641AbbAUOLk (ORCPT ); Wed, 21 Jan 2015 09:11:40 -0500 Date: Wed, 21 Jan 2015 15:11:38 +0100 From: Michal Hocko To: Krzysztof =?utf-8?Q?Koz=C5=82owski?= Cc: Joonsoo Kim , Christoph Lameter , Jesper Dangaard Brouer , Andrew Morton , linux-mm@kvack.org, LKML Subject: Re: mmotm: mm-slub-optimize-alloc-free-fastpath-by-removing-preemption-on-off.patch is causing preemptible splats Message-ID: <20150121141138.GC23700@dhcp22.suse.cz> References: <20150121132308.GB23700@dhcp22.suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed 21-01-15 15:06:03, Krzysztof Kozłowski wrote: [...] > Same here :) [1] . So actually only ARM seems affected (both armv7 and > armv8) because it is the only one which uses smp_processor_id() in > my_cpu_offset. This was on x86_64 with CONFIG_DEBUG_PREEMPT so it is not only ARM specific. > [1] https://lkml.org/lkml/2015/1/20/162 Sorry, have missed this post. -- Michal Hocko SUSE Labs