From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pa0-f51.google.com (mail-pa0-f51.google.com [209.85.220.51]) by kanga.kvack.org (Postfix) with ESMTP id BE5CE6B0032 for ; Wed, 21 Jan 2015 20:50:30 -0500 (EST) Received: by mail-pa0-f51.google.com with SMTP id fb1so22230313pad.10 for ; Wed, 21 Jan 2015 17:50:30 -0800 (PST) Received: from lgemrelse6q.lge.com (LGEMRELSE6Q.lge.com. [156.147.1.121]) by mx.google.com with ESMTP id 6si5739852pdk.217.2015.01.21.17.50.28 for ; Wed, 21 Jan 2015 17:50:29 -0800 (PST) Date: Thu, 22 Jan 2015 10:51:23 +0900 From: Joonsoo Kim Subject: Re: mmotm: mm-slub-optimize-alloc-free-fastpath-by-removing-preemption-on-off.patch is causing preemptible splats Message-ID: <20150122015123.GB21444@js1304-P5Q-DELUXE> References: <20150121132308.GB23700@dhcp22.suse.cz> <20150121141138.GC23700@dhcp22.suse.cz> <20150121142107.e26d5ebf3340aa91759fef1f@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20150121142107.e26d5ebf3340aa91759fef1f@linux-foundation.org> Sender: owner-linux-mm@kvack.org List-ID: To: Andrew Morton Cc: Michal Hocko , Krzysztof =?utf-8?Q?Koz=C5=82owski?= , Christoph Lameter , Jesper Dangaard Brouer , linux-mm@kvack.org, LKML On Wed, Jan 21, 2015 at 02:21:07PM -0800, Andrew Morton wrote: > On Wed, 21 Jan 2015 15:11:38 +0100 Michal Hocko wrote: > > > On Wed 21-01-15 15:06:03, Krzysztof Koz__owski 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. > > > > Hopefully > mm-slub-optimize-alloc-free-fastpath-by-removing-preemption-on-off-v3.patch > will fix this. Yes, it will fix this error. > The most recent -mmotm was a bit of a trainwreck. I'm scrambling to > get the holes plugged so I can get another mmotm out today. Another mmotm will fix many issues from me. :/ Thanks. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org