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 smtp3.osuosl.org (smtp3.osuosl.org [140.211.166.136]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 6579CC4167B for ; Thu, 30 Nov 2023 08:46:21 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp3.osuosl.org (Postfix) with ESMTP id 0B5BA6F4E3; Thu, 30 Nov 2023 08:46:21 +0000 (UTC) DKIM-Filter: OpenDKIM Filter v2.11.0 smtp3.osuosl.org 0B5BA6F4E3 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=osuosl.org; s=default; t=1701333981; bh=VE4KJzkvGYqhLU0dTo4tTYBAA2tuYClBZePWsio60TU=; h=To:References:From:Date:In-Reply-To:Subject:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: Cc:From; b=CMG8Nu6SPSPB/yhmAHR6pYv6UUAGBv+jCMq9U66JnYumb4sHnQpDPKwRS9dhml1NU 9TPqyoBvk0Ckaz6dSVstmUEVwV9gW0MDsY4Ze867RhIXb3vcp8wXq6iaZWdLpZNQhe GaBiS+kut9uoiLEjQb1ZvVVAVQPXh5CbU65vB4GdhxlnE323A2VkPR2dwLNsZM6un4 fI4NDo9iUV2v/abLb6cDeoe3zcXiRRGetkMBaffTMelcC1FfG5x57cqY68Zh+K8upv AEOH+1beOKDsJ5WM64y6/SZhJC64K6eXh17FvhyMVEDlAQ9hcIKnC9uTHDSjenCnxO vvKj4474x/1Og== X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp3.osuosl.org ([127.0.0.1]) by localhost (smtp3.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 582TTyCVDITW; Thu, 30 Nov 2023 08:46:20 +0000 (UTC) Received: from ash.osuosl.org (ash.osuosl.org [140.211.166.34]) by smtp3.osuosl.org (Postfix) with ESMTP id E8C2F6F4F3; Thu, 30 Nov 2023 08:46:19 +0000 (UTC) DKIM-Filter: OpenDKIM Filter v2.11.0 smtp3.osuosl.org E8C2F6F4F3 Received: from smtp4.osuosl.org (smtp4.osuosl.org [140.211.166.137]) by ash.osuosl.org (Postfix) with ESMTP id 743641BF422 for ; Thu, 30 Nov 2023 08:46:18 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp4.osuosl.org (Postfix) with ESMTP id 4B82341B42 for ; Thu, 30 Nov 2023 08:46:18 +0000 (UTC) DKIM-Filter: OpenDKIM Filter v2.11.0 smtp4.osuosl.org 4B82341B42 X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp4.osuosl.org ([127.0.0.1]) by localhost (smtp4.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Nt5xxPxFAJ1E for ; Thu, 30 Nov 2023 08:46:17 +0000 (UTC) Received: from szxga03-in.huawei.com (szxga03-in.huawei.com [45.249.212.189]) by smtp4.osuosl.org (Postfix) with ESMTPS id EEE8841B3D for ; Thu, 30 Nov 2023 08:46:16 +0000 (UTC) DKIM-Filter: OpenDKIM Filter v2.11.0 smtp4.osuosl.org EEE8841B3D Received: from dggpemm500005.china.huawei.com (unknown [172.30.72.57]) by szxga03-in.huawei.com (SkyGuard) with ESMTP id 4SgqRN3BjGzMnZ8; Thu, 30 Nov 2023 16:41:20 +0800 (CST) Received: from [10.69.30.204] (10.69.30.204) by dggpemm500005.china.huawei.com (7.185.36.74) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.35; Thu, 30 Nov 2023 16:46:12 +0800 To: Alexander Lobakin , Christoph Hellwig References: <20231124154732.1623518-1-aleksander.lobakin@intel.com> <20231124154732.1623518-4-aleksander.lobakin@intel.com> <6bd14aa9-fa65-e4f6-579c-3a1064b2a382@huawei.com> <534e7752-38a9-3e7e-cb04-65789712fb66@huawei.com> <8c6d09be-78d0-436e-a5a6-b94fb094b0b3@intel.com> From: Yunsheng Lin Message-ID: <4814a337-454b-d476-dabe-5035dd6dc51f@huawei.com> Date: Thu, 30 Nov 2023 16:46:11 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.2.0 MIME-Version: 1.0 In-Reply-To: <8c6d09be-78d0-436e-a5a6-b94fb094b0b3@intel.com> Content-Language: en-US X-Originating-IP: [10.69.30.204] X-ClientProxiedBy: dggems702-chm.china.huawei.com (10.3.19.179) To dggpemm500005.china.huawei.com (7.185.36.74) X-CFilter-Loop: Reflected Subject: Re: [Intel-wired-lan] [PATCH net-next v5 03/14] page_pool: avoid calling no-op externals when possible X-BeenThere: intel-wired-lan@osuosl.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel Wired Ethernet Linux Kernel Driver Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Paul Menzel , Maciej Fijalkowski , Jesper Dangaard Brouer , Larysa Zaremba , netdev@vger.kernel.org, Alexander Duyck , Ilias Apalodimas , linux-kernel@vger.kernel.org, Eric Dumazet , Michal Kubiak , intel-wired-lan@lists.osuosl.org, David Christensen , Jakub Kicinski , Paolo Abeni , "David S. Miller" Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: intel-wired-lan-bounces@osuosl.org Sender: "Intel-wired-lan" On 2023/11/29 21:17, Alexander Lobakin wrote: > From: Yunsheng Lin > Date: Wed, 29 Nov 2023 11:17:50 +0800 > >> On 2023/11/27 22:32, Alexander Lobakin wrote: >>> >>> Chris, any thoughts on a global flag for skipping DMA syncs ladder? >> >> It seems there was one already in the past: >> >> https://lore.kernel.org/netdev/7c55a4d7-b4aa-25d4-1917-f6f355bd722e@arm.com/T/ > > It addresses a different problem, meaningless indirect calls, while this > one addresses meaningless direct calls :> > When the above gets merged, we could combine these two into one global, > but Eric wasn't active with his patch and I remember there were some > problems, so I wouldn't count on that it will arrive soon. I went through the above patch, It seems to me that there was no fundamental problem that stopping us from implementing it in the dma layer basing on Eric' patch if Eric is no longer interested in working on a newer version? It is just that if we allow every subsystem and driver using dma API doing their own trick of skipping dma sync, then there is less willing to implement it in the dma layer. _______________________________________________ Intel-wired-lan mailing list Intel-wired-lan@osuosl.org https://lists.osuosl.org/mailman/listinfo/intel-wired-lan