From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0553BC2BA19 for ; Wed, 15 Apr 2020 11:16:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DF9422074F for ; Wed, 15 Apr 2020 11:16:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2896827AbgDOLPO (ORCPT ); Wed, 15 Apr 2020 07:15:14 -0400 Received: from Galois.linutronix.de ([193.142.43.55]:49465 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2896797AbgDOLMp (ORCPT ); Wed, 15 Apr 2020 07:12:45 -0400 Received: from bigeasy by Galois.linutronix.de with local (Exim 4.80) (envelope-from ) id 1jOfy8-0007Ia-4g; Wed, 15 Apr 2020 13:12:36 +0200 Date: Wed, 15 Apr 2020 13:12:35 +0200 From: Sebastian Andrzej Siewior To: Juri Lelli Cc: Thomas Gleixner , LKML , linux-rt-users , Steven Rostedt Subject: Re: [ANNOUNCE] v5.6.2-rt1 Message-ID: <20200415111235.6gomftgifn62dylp@linutronix.de> References: <20200403170443.pzm24672qo4hufcm@linutronix.de> <20200408070013.GB14300@localhost.localdomain> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20200408070013.GB14300@localhost.localdomain> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2020-04-08 09:00:13 [+0200], Juri Lelli wrote: > Hi, Hi, > On 03/04/20 19:04, Sebastian Andrzej Siewior wrote: > > Dear RT folks! > > > > I'm pleased to announce the v5.6.2-rt1 patch set. > > > > Changes since v5.4.28-rt19: > > > > - Rebase to v5.6.2 > > I was reviewing the new set and I couldn't find v5.4.28-rt19 > 6dbbc833c99f ("mm: perform lru_add_drain_all() remotely"). Don't think > it has been squashed either. > > Am I wrong? If not, why was that left out? I was going to drop it from v5.4 but kept it last minute. I announced in https://lkml.kernel.org/r/20200309171350.kjb3pdjazhxm2li2@linutronix.de that the problem it fixes is not limited to RT so we need a solution for both config switches. The current plan for local-locks is not to work cross CPU because it breaks the local_irq_save() / preempt_disable() replacement which is something this patch relies on. The worker triggered via vmstat_update() is also blocked if the user task runs at an elevated priority for longer time. > Thanks! > > Juri Sebastian