From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757836AbcDHGf6 (ORCPT ); Fri, 8 Apr 2016 02:35:58 -0400 Received: from mail-wm0-f49.google.com ([74.125.82.49]:36623 "EHLO mail-wm0-f49.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757603AbcDHGfz (ORCPT ); Fri, 8 Apr 2016 02:35:55 -0400 Message-ID: <1460097351.5582.15.camel@gmail.com> Subject: Re: [PATCH RT 4/6] rt/locking: Reenable migration accross schedule From: Mike Galbraith To: Sebastian Andrzej Siewior Cc: Thomas Gleixner , linux-rt-users@vger.kernel.org, linux-kernel@vger.kernel.org, Steven Rostedt , Peter Zijlstra Date: Fri, 08 Apr 2016 08:35:51 +0200 In-Reply-To: <57068F28.8010409@linutronix.de> References: <1455318168-7125-1-git-send-email-bigeasy@linutronix.de> <1455318168-7125-4-git-send-email-bigeasy@linutronix.de> <1458463425.3908.5.camel@gmail.com> <1458814024.23732.35.camel@gmail.com> <1459405903.14336.64.camel@gmail.com> <20160401211105.GE29603@linutronix.de> <1459566735.3779.36.camel@gmail.com> <57068F28.8010409@linutronix.de> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.16.5 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 2016-04-07 at 18:47 +0200, Sebastian Andrzej Siewior wrote: > > If that lock dies, we can unpin when entering lock slow path and pin > > again post acquisition with no ABBA worries as well, and not only does > > existing hotplug work heaping truckloads better, -rt can perhaps help > > spot trouble as the rewrite proceeds. > > > > Current state is more broken than ever.. if that's possible. > > And the two patches you attached here did? Re-reading your question, no, the only troubles I encountered were the rt specific woes previously identified. So the thought that started me down this path turned up jack-diddly-spit.. but that's not a bad thing, so I don't consider it to have been a waste of time. -Mike