Received: by 2002:a5b:505:0:0:0:0:0 with SMTP id o5csp1118743ybp; Fri, 4 Oct 2019 09:46:28 -0700 (PDT) X-Google-Smtp-Source: APXvYqxzObJyMr475HHxXOGSXh9zKWUlqb+BecjjlkeJuFD3p78C+ZqB+0nxR5y1dXM4ArUoaqvu X-Received: by 2002:a17:906:6bd5:: with SMTP id t21mr13393280ejs.128.1570207588157; Fri, 04 Oct 2019 09:46:28 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1570207588; cv=none; d=google.com; s=arc-20160816; b=PDAeIBUaDb/EiowhtHRw83nkWAY/kJe+N1rEUeWEy/CrclUF63GiFEDLu5V+owsFMP yDO/GX7hmPFQ9V7admlJRLjzXMYSDKhxhj+DbBtWPtzJyDnrMla0cZoiW4NneTIduswO 9WMI/SGZJPvckFXhzl/T3tpOo1szDZe0deD7gdd/4B9zjleDRgVu27YrJrtA9iU4ha19 uhg+/Fhfi2sMmERqTXOxetY4FHEiXQrBfx3pRqBG31UA30KOqIQ8mLq4PBfsHTeaNJey /Vd6Tzaummz/rjBp0kPmIp5+qzgB2bQutXvoyePKKvyTsD1t0sv44Ab5oJ6eT3zQk6MR c1sw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:user-agent:in-reply-to :content-disposition:mime-version:references:message-id:subject:cc :to:from:date; bh=2wNpK9qQB7NI9LSvIVrdr0HjqhhRfZwrSOiiHaTGZxM=; b=SjezPUkKKQFsbM9Nse4AvFhNbvxCvgwQOIUQULsaCMlLBhshtXiE5hKWc5pd9LyguG dDVUG7X+frjKPpHghDez+uCRDYkZ7GXBhHwymrrXVTjBdYDUjqWIIWNQ8Vay2cF33QnC eD1MR2kp4Ru7eDXurj3B1yWR7ZrRvlaxuFeq4HnMLKEV5T95hvDTaN3Ef0DXTzO9WK+D PRy5127gEbHFhyXb+meegqvBUtMOnN+OrA/GFH184mAUjaq3lqeT+HlmIbT0wpndUfA7 cyVBtGsOSgzVswHZjBiMUj0WQUnSaB1gQbQZWNg6OLCjzbjXcsiWm0mdn/+s4ermOE6S bXoA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id r24si3733087edy.417.2019.10.04.09.46.04; Fri, 04 Oct 2019 09:46:28 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728336AbfJDQpo (ORCPT + 99 others); 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