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,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 6D42BC4338F for ; Wed, 4 Aug 2021 16:23:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4CB3B60F41 for ; Wed, 4 Aug 2021 16:23:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237313AbhHDQXP (ORCPT ); Wed, 4 Aug 2021 12:23:15 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53554 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237105AbhHDQXO (ORCPT ); Wed, 4 Aug 2021 12:23:14 -0400 Received: from mail-pj1-x1031.google.com (mail-pj1-x1031.google.com [IPv6:2607:f8b0:4864:20::1031]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DAFBEC0613D5 for ; Wed, 4 Aug 2021 09:23:01 -0700 (PDT) Received: by mail-pj1-x1031.google.com with SMTP id t7-20020a17090a5d87b029017807007f23so6277113pji.5 for ; Wed, 04 Aug 2021 09:23:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20150623.gappssmtp.com; s=20150623; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=KDf4S7vuVJwPHUuA2uOwMFtaC8lnY+PpQtbeQuDG6qk=; b=K8xx7Gwt90YL5tpn+pg1F1XwRNwbg/3sOwmML189OUSTLCAYGybq+ezWdh+iW8rcur jJz+5jmiI4WtqT9rO/Ox5jJPUZmIo4I+de5jYIjia0crWrmcDYlpUcAbo6ejSCEU0LXG q0ePKUGqApxbGpTiYuHM5sulMlEyxPhPjWWoKVRLsRaJQ10l7JjqfNX4sw03aI3QWbmQ q7FirZt1qNIcqnK8sJA+0p5InRQwhMapXzGJZDoPjBxmB3BMorvwQ/5F+2Osx7c1qk5p gNdu7HZBN0GZl2CBND1eNJ0UIDjtudEh2aPeXj3FbmICOt0yS89jAxr5qekMhOGo/+aK wMRg== 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=KDf4S7vuVJwPHUuA2uOwMFtaC8lnY+PpQtbeQuDG6qk=; b=X0uDJk7aRTR1uRKAD4ASTxiaJF+UES42B50UwELMuegoSq2KjD8JIn6ZK4FNVmswew G8u4F/WLcHxU32cBENHmSQN4oyJ5et+6hM6cAExIbBEekVDHRuG8y4ywQtTeiYp8FWgg 5zLwKR9hMDnvhJpDZkvP6/CMy3OuHIYWOq5aXefYV+PH5r4bTKJ6oTrcgo1+sSb3oAHV EEBQDDV7x2GAl8XJgG2GifUYwDDG+zi+hgU1zxNidE6Pdv9inKtP7+Itt4ddduKCXukW 1F6GGWrObxCfOnnOP9bD1FDsJosagszuvz5bvmoMw1x8GBpLvNZQjMBw4H4vWF7SOoUh kH0A== X-Gm-Message-State: AOAM531to1QFtajk2y51X4iiJyPdWzJ8l46JKI0hfxiaG+l2ic38NKZD w7Fb77+K/0YTZta43jAd17fMoA== X-Google-Smtp-Source: ABdhPJxyQStlQynjCVKg8OadBGr6XpSuvMNaXEahcITQr5ZhH7KVkhFBSvVMx04csvIB9chzwdInTA== X-Received: by 2002:a62:584:0:b029:32e:3b57:a1c6 with SMTP id 126-20020a6205840000b029032e3b57a1c6mr435156pff.13.1628094181407; Wed, 04 Aug 2021 09:23:01 -0700 (PDT) Received: from [192.168.1.116] ([198.8.77.61]) by smtp.gmail.com with ESMTPSA id w2sm6685972pjt.14.2021.08.04.09.23.00 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 04 Aug 2021 09:23:00 -0700 (PDT) Subject: Re: [ANNOUNCE] v5.14-rc4-rt4 To: Steven Rostedt Cc: Sebastian Andrzej Siewior , Peter Zijlstra , Daniel Wagner , Thomas Gleixner , LKML , linux-rt-users@vger.kernel.org References: <20210804104340.fhdjwn3hruymu3ml@linutronix.de> <20210804104803.4nwxi74sa2vwiujd@linutronix.de> <20210804110057.chsvt7l5xpw7bo5r@linutronix.de> <20210804131731.GG8057@worktop.programming.kicks-ass.net> <4f549344-1040-c677-6a6a-53e243c5f364@kernel.dk> <20210804153308.oasahcxjmcw7vivo@linutronix.de> <20210804154743.niogqvnladdkfgi2@linutronix.de> <7c946918-ae0d-6195-6a78-b019f9bc1fd3@kernel.dk> <20210804155747.cwayhjsdjc4zaubd@linutronix.de> <20210804122029.6c5c837a@oasis.local.home> From: Jens Axboe Message-ID: <4ffb8f7c-085c-f6cc-e308-3f75b24b8e47@kernel.dk> Date: Wed, 4 Aug 2021 10:22:59 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20210804122029.6c5c837a@oasis.local.home> 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 8/4/21 10:20 AM, Steven Rostedt wrote: > On Wed, 4 Aug 2021 10:05:39 -0600 > Jens Axboe wrote: > >> So what do you propose in the interim? As far as io_uring is concerned, >> it's not a _huge_ deal to do the IRQ dance, but it does bother me that >> we're making things slightly worse for the mainline kernel just to make >> the out-of-tree patches happy. > > Note that the purpose of these patches are to be able to bring those > out-of-tree patches into the kernel such that they are no longer > out-of-tree. Sure, I realize that. And I've always been accommodating to making pieces of code more RT friendly, I just don't like doing it for cases where we are making mainline worse. In that regard, I do still consider those patches out-of-tree, which they are. And while I'm more sympathetic to them compared to other out-of-tree code as there's a long term plan to get it all in, it's still out-of-tree. Best solution here is probably to just carry that particular change in the RT patchset for now. -- Jens Axboe