From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756847AbaEIPzX (ORCPT ); Fri, 9 May 2014 11:55:23 -0400 Received: from www.linutronix.de ([62.245.132.108]:37330 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754499AbaEIPzV (ORCPT ); Fri, 9 May 2014 11:55:21 -0400 Date: Fri, 9 May 2014 17:55:15 +0200 From: Sebastian Andrzej Siewior To: Daniel Bristot de Oliveira Cc: Paul Gortmaker , linux-rt-users@vger.kernel.org, linux-kernel@vger.kernel.org, rostedt@goodmis.org Subject: Re: [RFC PATCH RT] netconsole: enable netconsole on PREEMPT_RT Message-ID: <20140509155515.GJ29014@linutronix.de> References: <31fa5b74f8e6267f9b7f906c791d1ddf7d550771.1398788759.git.bristot@redhat.com> <536256EC.1060909@windriver.com> <5367E23B.7060908@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <5367E23B.7060908@redhat.com> X-Key-Id: 97C4700B X-Key-Fingerprint: 09E2 D1F3 9A3A FF13 C3D3 961C 0688 1C1E 97C4 700B User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Daniel Bristot de Oliveira | 2014-05-05 16:10:51 [-0300]: >Figure out why it was disabled is one objective of this RFC :-). The patch first appeared in patch-3.2-rt10.patch. Haven't seen it in v3.0-rt1 nor in in the first v3.2-rcX-rt1. I would assume that it was something locking specific. I haven't seen any lockdep splat in current v3.14-RT. Therefore I'm going to drop that hunk from the patch so it can be enabled again. Since I don't really know why it was disabled in v3.2 I think it is best not to backport this change unless someone figures out the real reason and provides proof that it works in the older kernel as well. Sebastian