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=-11.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham 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 A77AFC4361B for ; Mon, 14 Dec 2020 21:01:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 75A89224B0 for ; Mon, 14 Dec 2020 21:01:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2503719AbgLNVBd (ORCPT ); Mon, 14 Dec 2020 16:01:33 -0500 Received: from mail.kernel.org ([198.145.29.99]:38108 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2503680AbgLNVBV (ORCPT ); Mon, 14 Dec 2020 16:01:21 -0500 Message-ID: <8035075adf8738792f4fa39032eeeb997bc1e653.camel@kernel.org> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1607979519; bh=cldqRzZxWGs3Mp0GWam6BN3UIEF7254f3nfHMyN7cv4=; h=Subject:From:To:Cc:Date:In-Reply-To:References:From; b=Gtxqgx/zUgAV/HC4HUDaTWWErUYbIXoTgkKUYMD/ELlewv6ngbmFefFbLOnnQE37B fwW9w8lNXB0jkS0zaOY6KiQuNNvzR6i/TAi+fgG1AW/EykMErJidLU/39fKuq2JQ6H cYZqxR/cWcdcz2hfp8VGfziH+pOYPr8oSmVaMVsoIT/cKvofZxClMOcYe7qD5WQeeL NIffLKExOZStE6EtkCW8G8ODK2nn1z9f76JCt7Kq0Z4tPHOOMdZSDtSFcABv2Uu75T yhfntlEnCdaAYrYdYHk5OeIYZ35zyWy0f9d7SzNO3zktL7NiFTX5VRmoH1k+TTpoKc hhNH7an3hKyYw== Subject: Re: [patch 23/30] net/mlx5: Use effective interrupt affinity From: Saeed Mahameed To: Thomas Gleixner , LKML Cc: Peter Zijlstra , Marc Zyngier , Leon Romanovsky , "David S. Miller" , Jakub Kicinski , netdev@vger.kernel.org, linux-rdma@vger.kernel.org, "James E.J. Bottomley" , Helge Deller , afzal mohammed , linux-parisc@vger.kernel.org, Russell King , linux-arm-kernel@lists.infradead.org, Mark Rutland , Catalin Marinas , Will Deacon , Christian Borntraeger , Heiko Carstens , linux-s390@vger.kernel.org, Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , David Airlie , Daniel Vetter , Pankaj Bharadiya , Chris Wilson , Wambui Karuga , intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, Tvrtko Ursulin , Linus Walleij , linux-gpio@vger.kernel.org, Lee Jones , Jon Mason , Dave Jiang , Allen Hubbe , linux-ntb@googlegroups.com, Lorenzo Pieralisi , Rob Herring , Bjorn Helgaas , Michal Simek , linux-pci@vger.kernel.org, Karthikeyan Mitran , Hou Zhiqiang , Tariq Toukan , Boris Ostrovsky , Juergen Gross , Stefano Stabellini , xen-devel@lists.xenproject.org Date: Mon, 14 Dec 2020 12:58:36 -0800 In-Reply-To: <20201210194044.876342330@linutronix.de> References: <20201210192536.118432146@linutronix.de> <20201210194044.876342330@linutronix.de> Content-Type: text/plain; charset="UTF-8" User-Agent: Evolution 3.36.5 (3.36.5-1.fc32) MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 2020-12-10 at 20:25 +0100, Thomas Gleixner wrote: > Using the interrupt affinity mask for checking locality is not really > working well on architectures which support effective affinity masks. > > The affinity mask is either the system wide default or set by user > space, > but the architecture can or even must reduce the mask to the > effective set, > which means that checking the affinity mask itself does not really > tell > about the actual target CPUs. > > Signed-off-by: Thomas Gleixner > Cc: Saeed Mahameed > Cc: Leon Romanovsky > Cc: "David S. Miller" > Cc: Jakub Kicinski > Cc: netdev@vger.kernel.org > Cc: linux-rdma@vger.kernel.org > Acked-by: Saeed Mahameed