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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1A859C4332F for ; Tue, 31 Oct 2023 01:21:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230372AbjJaBVZ (ORCPT ); Mon, 30 Oct 2023 21:21:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43886 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229583AbjJaBVV (ORCPT ); Mon, 30 Oct 2023 21:21:21 -0400 Received: from vps0.lunn.ch (vps0.lunn.ch [156.67.10.101]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B0FDEA2; Mon, 30 Oct 2023 18:21:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lunn.ch; s=20171124; h=In-Reply-To:Content-Disposition:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:From:Sender:Reply-To:Subject: Date:Message-ID:To:Cc:MIME-Version:Content-Type:Content-Transfer-Encoding: Content-ID:Content-Description:Content-Disposition:In-Reply-To:References; bh=oESTZcoLLAHe053TLIxPqPD3M44OFFLZuqr/siWwWzE=; b=uj4A1M9G3+KnfKS5KDCCtYtGix en09AaoCqhvqx2q97tW8Ey/SAbcbgrrEes4tYZ6HPETS920mZRR2BDqm6H299Ppb7DRABGbGiFB3X ZCf0yyVO2wVfHBSaE1aEBdN4FG/1lwoXZo2L3+hYqjaCDAsUbJOIyPJcpBg0rc/Iwse0=; Received: from andrew by vps0.lunn.ch with local (Exim 4.94.2) (envelope-from ) id 1qxdRT-000Ztn-0v; Tue, 31 Oct 2023 02:21:15 +0100 Date: Tue, 31 Oct 2023 02:21:15 +0100 From: Andrew Lunn To: Mirsad Todorovac Cc: Heiner Kallweit , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, nic_swsd@realtek.com, "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Marco Elver Subject: Re: [PATCH v3 1/1] r8169: Coalesce RTL8411b PHY power-down recovery programming instructions to reduce spinlock stalls Message-ID: References: <20231028110459.2644926-1-mirsad.todorovac@alu.unizg.hr> <376db5ae-1bb0-4682-b132-b9852be3c7aa@gmail.com> <23428695-fcff-495b-ac43-07639b4f5d08@alu.unizg.hr> <30e15e9a-d82e-4d24-be37-1b9d1534c082@gmail.com> <9f99c3a4-2752-464b-b37d-58a4f8041804@alu.unizg.hr> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <9f99c3a4-2752-464b-b37d-58a4f8041804@alu.unizg.hr> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > I will not contradict, but the cummulative amount of memory barriers on each MMIO read/write > in each single one of the drivers could amount to some degrading of overall performance and > latency in a multicore system. For optimisations, we like to see benchmark results which show some improvements. Do you have any numbers? Andrew