From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751557AbcFVUAK (ORCPT ); Wed, 22 Jun 2016 16:00:10 -0400 Received: from mail-qk0-f171.google.com ([209.85.220.171]:35137 "EHLO mail-qk0-f171.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751080AbcFVUAI (ORCPT ); Wed, 22 Jun 2016 16:00:08 -0400 From: Daniel Bristot de Oliveira X-Google-Original-From: Daniel Bristot de Oliveira Subject: Re: [PATCH v2] cgroup: disable irqs while holding css_set_lock To: Daniel Bristot de Oliveira , Tejun Heo References: <1465325475-30593-1-git-send-email-bristot@redhat.com> <20160607193008.GA31708@htj.duckdns.org> <6f15f27f-3757-5413-4292-1386e95bc278@redhat.com> <38469b61-7cc5-5fec-4de3-0e9a616dfe95@redhat.com> <20160616220315.GH3262@mtj.duckdns.org> <20160616221434.GI3262@mtj.duckdns.org> <20160617053625.GL31708@htj.duckdns.org> <4353aea6-c1e9-80d2-be44-75340d0aaf01@redhat.com> Cc: linux-kernel@vger.kernel.org, Rik van Riel , "Luis Claudio R. Goncalves" , Li Zefan , Johannes Weiner , Juri Lelli , cgroups@vger.kernel.org, Steven Rostedt Message-ID: <6c904665-b6ed-5d6a-e486-8c24e47a5695@redhat.com> Date: Wed, 22 Jun 2016 17:00:01 -0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.1.0 MIME-Version: 1.0 In-Reply-To: <4353aea6-c1e9-80d2-be44-75340d0aaf01@redhat.com> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi On 06/17/2016 04:59 PM, Daniel Bristot de Oliveira wrote: > - using _irq and _irqsave appropriately, and > - using raw_spin locks functions. After some patches/tests on -rt, I figured that there is a -rt specific patch that moves cgroup_free() calls to the non-atomic context (in the -rt kernel). So we do not need to convert spinlocks to raw_spinlocks. I am sending the v3 just to use _irq and _irqsave appropriately. -- Daniel