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=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 E35D4C4360C for ; Fri, 4 Oct 2019 16:45:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B1F6E20873 for ; Fri, 4 Oct 2019 16:45:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729226AbfJDQpo (ORCPT ); Fri, 4 Oct 2019 12:45:44 -0400 Received: from Galois.linutronix.de ([193.142.43.55]:37384 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725730AbfJDQpo (ORCPT ); Fri, 4 Oct 2019 12:45:44 -0400 Received: from bigeasy by Galois.linutronix.de with local (Exim 4.80) (envelope-from ) id 1iGQi4-0007mf-0j; Fri, 04 Oct 2019 18:45:40 +0200 Date: Fri, 4 Oct 2019 18:45:39 +0200 From: Sebastian Andrzej Siewior To: Scott Wood Cc: linux-rt-users@vger.kernel.org, linux-kernel@vger.kernel.org, "Paul E . McKenney" , Joel Fernandes , Thomas Gleixner , Steven Rostedt , Peter Zijlstra , Juri Lelli , Clark Williams Subject: Re: [PATCH RT v3 3/5] sched: migrate_dis/enable: Use rt_invol_sleep Message-ID: <20191004164539.bwxbpmsgqs4o4ysr@linutronix.de> References: <20190917075943.qsaakyent4dxjkq4@linutronix.de> <779eddcc937941e65659a11b1867c6623a2c8890.camel@redhat.com> <404575720cf24765e66020f15ce75352f08a0ddb.camel@redhat.com> <20190923175233.yub32stn3xcwkaml@linutronix.de> <20190924112155.rxeyksetgqmer3pg@linutronix.de> <55dc19fcc44b2e658b71f68206306c8310335564.camel@redhat.com> <20190924152514.enzeuoo5a6o3mgqu@linutronix.de> <1a2234884e55e5ee6df5f32f828a99c1b248933f.camel@redhat.com> <20190924160554.5esplbmnzm4q4tew@linutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: User-Agent: NeoMutt/20180716 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2019-09-24 11:35:16 [-0500], Scott Wood wrote: > > OK, sounds like stop_one_cpu_nowait() is the way to go then. so I applied the last three patches from the migrate-disable() series and it looks good. Nothing blew up in my testing. There were no objects to the stop_one_cpu_nowait() suggestion and I think that it is important not to lose the state at end. Could you please repost the patches? > -Scott Sebastian