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 0BEC8C433FE for ; Mon, 14 Nov 2022 13:24:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236136AbiKNNYA (ORCPT ); Mon, 14 Nov 2022 08:24:00 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51086 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230030AbiKNNYA (ORCPT ); Mon, 14 Nov 2022 08:24:00 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 72267276 for ; Mon, 14 Nov 2022 05:23:59 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 1623F61194 for ; Mon, 14 Nov 2022 13:23:59 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9D86FC433D6; Mon, 14 Nov 2022 13:23:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1668432238; bh=wnpm2NS18rFbBEvcB3KHijozvFClc8bbydDGjrnn9c8=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=LtTwazV4c5DKoHkz7x3vGPuCKSxlYnU6Sx8SA7P/S+nXh3YlvQMkDP8CVRmk34FR6 tfPEcYnaHmc4OJKYwO9yR4lYO3/KhLY/nBQYlT2sANSl6H0ZoPFnljuTYZP89eMzDu +DviOctPjqwLCaJWXx8nNL8fwrB78laB8xn+ljVWN5zfLrTcvnrH/muEn9Z0LdFDzt sCKYIlNjDkvvV+FGonz/h3hKh+/SANVzAjRVogRc83xt/QmlKi+YOSHC2v8830FYnJ oM30yxJYhA2if6I0WLMxWOup4hUwzj2QZTuPDXMvYLoLFB0uebjAJcgEer7fzz9GDr 2eCNoHK9dkthA== Date: Mon, 14 Nov 2022 15:23:53 +0200 From: Leon Romanovsky To: Michal Swiatkowski Cc: netdev@vger.kernel.org, davem@davemloft.net, kuba@kernel.org, pabeni@redhat.com, edumazet@google.com, intel-wired-lan@lists.osuosl.org, jiri@nvidia.com, anthony.l.nguyen@intel.com, alexandr.lobakin@intel.com, sridhar.samudrala@intel.com, wojciech.drewek@intel.com, lukasz.czapnik@intel.com, shiraz.saleem@intel.com, jesse.brandeburg@intel.com, mustafa.ismail@intel.com, przemyslaw.kitszel@intel.com, piotr.raczynski@intel.com, jacob.e.keller@intel.com, david.m.ertman@intel.com, leszek.kaliszczuk@intel.com Subject: Re: [PATCH net-next 00/13] resource management using devlink reload Message-ID: References: <20221114125755.13659-1-michal.swiatkowski@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20221114125755.13659-1-michal.swiatkowski@linux.intel.com> Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On Mon, Nov 14, 2022 at 01:57:42PM +0100, Michal Swiatkowski wrote: > Currently the default value for number of PF vectors is number of CPUs. > Because of that there are cases when all vectors are used for PF > and user can't create more VFs. It is hard to set default number of > CPUs right for all different use cases. Instead allow user to choose > how many vectors should be used for various features. After implementing > subdevices this mechanism will be also used to set number of vectors > for subfunctions. > > The idea is to set vectors for eth or VFs using devlink resource API. > New value of vectors will be used after devlink reinit. Example > commands: > $ sudo devlink resource set pci/0000:31:00.0 path msix/msix_eth size 16 > $ sudo devlink dev reload pci/0000:31:00.0 > After reload driver will work with 16 vectors used for eth instead of > num_cpus. By saying "vectors", are you referring to MSI-X vectors? If yes, you have specific interface for that. https://lore.kernel.org/linux-pci/20210314124256.70253-1-leon@kernel.org/ Thanks