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=-5.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,NICE_REPLY_A,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 3B430C388F7 for ; Mon, 9 Nov 2020 16:40:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D7B0D20789 for ; Mon, 9 Nov 2020 16:40:03 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="Ah2db9x/" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730180AbgKIQkC (ORCPT ); Mon, 9 Nov 2020 11:40:02 -0500 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:57207 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729776AbgKIQkC (ORCPT ); Mon, 9 Nov 2020 11:40:02 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1604940001; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=8CRsTblhXHqnxALqI5jnaNHHWl8AWCLUwL4KBhVIVIk=; b=Ah2db9x/H1Dze+zHPSh9GHbOWl6i6eciUPRkQGDy5aTJf8Ey4c1QbphhKk48uvnxvT3W76 ZAZaeYn4Gn++EyOKJDGeRcHWNuWpaeJbdDC68qZZUfVlRQuwuLhOUCzi02dw3yJQn/MyTV XXLjzorR+bBfQE8QI0dIbu3eeuBNEXA= Received: from mail-qv1-f72.google.com (mail-qv1-f72.google.com [209.85.219.72]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-323-JXCFNUelNzG983UlqUMbZA-1; Mon, 09 Nov 2020 11:39:59 -0500 X-MC-Unique: JXCFNUelNzG983UlqUMbZA-1 Received: by mail-qv1-f72.google.com with SMTP id m17so4427355qvg.5 for ; Mon, 09 Nov 2020 08:39:59 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=8CRsTblhXHqnxALqI5jnaNHHWl8AWCLUwL4KBhVIVIk=; b=gAt6hQkpf56hhAU83+6qawY/kXhqUT7fq68s482J/vv4PGP0FkOV9RPliXengAIqXY pGNVICavBSlNvlkuKOIgklUQcIfjbhQVPaZX0k3YXzdXdZdC4FbjXgivVdA+R73zaUBf Batx76PX9m64UxVmHcw1VILTDuvw8oGQOT/tdgK7uGFjNZzFpkv4Fjmkl6wZNs5YWOCl 7d0J9BmFyZOnqDO1TN+u3ME7Q+l0Fi7nD7TiQjA7vS+HdW0wR7mY/ci79fmmLou9ZpyT B+rB852t1twieNwnjh7WVRWnfwZsYVfAPpdOBnlmqKTIvkxgKWFFwYxEamkIt5/hmx49 /uZQ== X-Gm-Message-State: AOAM5302d2sc70ZIW92rkXxmthXCOIWhXWU88yyqjEpMaR/ylA8AOTwr LxUUXgWl+w8xsIqt65CPZ5dGB3RsmLsKarotDcWa3mkD/3pYEQ9WW+XGJ6FFIC8MTvUZfdZN9+p sj5Q4IizZ1znRAuGss5vV8XHg X-Received: by 2002:a05:620a:140d:: with SMTP id d13mr15079352qkj.470.1604939999322; Mon, 09 Nov 2020 08:39:59 -0800 (PST) X-Google-Smtp-Source: ABdhPJw0Wfp4N7gEbWoeZTjAELrh99BqnYeP+F1Ei5ILbbUA+oDIw4oxWG2LrTgptljXZG7JoQIuww== X-Received: by 2002:a05:620a:140d:: with SMTP id d13mr15079320qkj.470.1604939999037; Mon, 09 Nov 2020 08:39:59 -0800 (PST) Received: from x1.bristot.me (host-95-246-207-183.retail.telecomitalia.it. [95.246.207.183]) by smtp.gmail.com with ESMTPSA id 8sm6704830qkb.98.2020.11.09.08.39.55 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 09 Nov 2020 08:39:58 -0800 (PST) Subject: Re: [PATCH v4 00/19] sched: Migrate disable support To: Peter Zijlstra , tglx@linutronix.de, mingo@kernel.org Cc: linux-kernel@vger.kernel.org, bigeasy@linutronix.de, qais.yousef@arm.com, swood@redhat.com, valentin.schneider@arm.com, juri.lelli@redhat.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, rostedt@goodmis.org, bsegall@google.com, mgorman@suse.de, vincent.donnefort@arm.com, tj@kernel.org, ouwen210@hotmail.com References: <20201023101158.088940906@infradead.org> From: Daniel Bristot de Oliveira Message-ID: <8defae53-c6b4-241a-da79-16719138baf3@redhat.com> Date: Mon, 9 Nov 2020 17:39:54 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.4.0 MIME-Version: 1.0 In-Reply-To: <20201023101158.088940906@infradead.org> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 10/23/20 12:11 PM, Peter Zijlstra wrote: > Hi, > > The fourth version of migrate_disable() for PREEMPT_RT. > > Two changes since last time: > > - fixes !SMP builds (bigeasy) > - TLA+ validation of migrate_disable() vs sched_setaffinity() (valsch) > > Esp. that latter resulted in significant changes to patch #10. Huge thanks to > Valentin. While I will still work on this, testing more and trying to analyze the effects from the (rt) scheduling perspective, I do not see any other issues (kudos to Valentin, impressive review). Feel free to add: Reviewed-by: Daniel Bristot de Oliveira Thanks! -- Daniel