Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755231AbbBTSxr (ORCPT ); Fri, 20 Feb 2015 13:53:47 -0500 Received: from mail1.windriver.com ([147.11.146.13]:39457 "EHLO mail1.windriver.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754426AbbBTSxp (ORCPT ); Fri, 20 Feb 2015 13:53:45 -0500 Message-ID: <54E782A4.3030502@windriver.com> Date: Fri, 20 Feb 2015 13:53:24 -0500 From: Paul Gortmaker User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.3.0 MIME-Version: 1.0 To: Sebastian Andrzej Siewior CC: Thavatchai Makphaibulchoke , Thavatchai Makphaibulchoke , , , , , Subject: Re: [PATCH RT v2] kernel/res_counter.c: Change lock of struct res_counter to raw_spinlock_t References: <1420745917-50747-1-git-send-email-tmac@hp.com> <1422644389-33074-1-git-send-email-tmac@hp.com> <20150213191909.GA8299@windriver.com> <54DE6AD5.9070000@hp.com> <20150213213016.GC7102@windriver.com> <20150218110552.GE28763@linutronix.de> In-Reply-To: <20150218110552.GE28763@linutronix.de> Content-Type: text/plain; charset="utf-8"; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1159 Lines: 34 On 2015-02-18 06:05 AM, Sebastian Andrzej Siewior wrote: > * Paul Gortmaker | 2015-02-13 16:30:17 [-0500]: > > there is the thread "[v3.10-rt / v3.12-rt] scheduling while atomic in > cgroup code" where I applied Mike's patch. This should fix the problem > reported and be part of the next release. > Could please double check (either by grabing the patch or waiting for > the next release). I've applied Mike's patch from here: https://lkml.org/lkml/2014/6/21/11 and tested it on the old dell core2 that reliably showed the splat at boot, and it is now gone. This is on vanilla 3.14-rt plus isci fix + simpleworkqueue + aio-swq fix (all pending for 3.18-rt next). I also tested it on the 20 core canoe pass where the rawlock conversion patch from Thavatchai caused strange and unpredictable failure modes and that box seems fine with this smaller footprint cpulight change. Paul. -- > > Sebastian > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/