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 D9BF0C433E0 for ; Sun, 17 May 2020 19:30:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B471F20674 for ; Sun, 17 May 2020 19:30:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726302AbgEQTaQ (ORCPT ); Sun, 17 May 2020 15:30:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49918 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726269AbgEQTaQ (ORCPT ); Sun, 17 May 2020 15:30:16 -0400 Received: from shards.monkeyblade.net (shards.monkeyblade.net [IPv6:2620:137:e000::1:9]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8AE6DC061A0C for ; Sun, 17 May 2020 12:30:16 -0700 (PDT) Received: from localhost (unknown [IPv6:2601:601:9f00:477::3d5]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) (Authenticated sender: davem-davemloft) by shards.monkeyblade.net (Postfix) with ESMTPSA id AC70E128A076E; Sun, 17 May 2020 12:30:15 -0700 (PDT) Date: Sun, 17 May 2020 12:30:14 -0700 (PDT) Message-Id: <20200517.123014.104345884367246585.davem@davemloft.net> To: andrew@lunn.ch Cc: lukas@wunner.de, marex@denx.de, netdev@vger.kernel.org, ynezz@true.cz, yuehaibing@huawei.com Subject: Re: [PATCH V6 00/20] net: ks8851: Unify KS8851 SPI and MLL drivers From: David Miller In-Reply-To: <20200517191635.GE606317@lunn.ch> References: <20200516.190225.342589110126932388.davem@davemloft.net> <20200517071355.ww5xh7fgq7ymztac@wunner.de> <20200517191635.GE606317@lunn.ch> X-Mailer: Mew version 6.8 on Emacs 26.3 Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.5.12 (shards.monkeyblade.net [149.20.54.216]); Sun, 17 May 2020 12:30:15 -0700 (PDT) Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Andrew Lunn Date: Sun, 17 May 2020 21:16:35 +0200 >> Nevertheless I was going to repeat the performance measurements on a >> recent kernel but haven't gotten around to that yet because the >> measurements need to be performed with CONFIG_PREEMPT_RT_FULL to >> be reliable (a vanilla kernel is too jittery), so I have to create >> a new branch with RT patches on the test machine, which is fairly >> involved and time consuming. > > I assume you will then mainline the changes, so you don't need to do > it again? That is the problem with doing development work on a dead > kernel. I think the limitation is outside of his control as not all of the RT patches are in mainline yet.