From patchwork Tue Nov 29 09:37:21 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gregory CLEMENT X-Patchwork-Id: 9451273 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id D1FAA6071E for ; Tue, 29 Nov 2016 09:39:57 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D3A3B27DC2 for ; Tue, 29 Nov 2016 09:39:57 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id C822F27E71; Tue, 29 Nov 2016 09:39:57 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 56E0A27E5A for ; Tue, 29 Nov 2016 09:39:57 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.85_2 #1 (Red Hat Linux)) id 1cBerp-0002op-1L; Tue, 29 Nov 2016 09:38:25 +0000 Received: from mail.free-electrons.com ([62.4.15.54]) by bombadil.infradead.org with esmtp (Exim 4.85_2 #1 (Red Hat Linux)) id 1cBerh-0002Xh-Jc for linux-arm-kernel@lists.infradead.org; Tue, 29 Nov 2016 09:38:19 +0000 Received: by mail.free-electrons.com (Postfix, from userid 110) id 04CFF20B56; Tue, 29 Nov 2016 10:37:56 +0100 (CET) Received: from localhost (83.146.29.93.rev.sfr.net [93.29.146.83]) by mail.free-electrons.com (Postfix) with ESMTPSA id C9AE920654; Tue, 29 Nov 2016 10:37:45 +0100 (CET) From: Gregory CLEMENT To: "David S. Miller" , linux-kernel@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH v3 net-next 1/6] net: mvneta: Optimize rx path for small frame Date: Tue, 29 Nov 2016 10:37:21 +0100 Message-Id: <50c3bed2264b0755205c622e72fc5e00cbe28233.1480412215.git-series.gregory.clement@free-electrons.com> X-Mailer: git-send-email 2.10.2 In-Reply-To: References: In-Reply-To: References: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20161129_013818_057950_1DB5E2E6 X-CRM114-Status: UNSURE ( 9.74 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jisheng Zhang , Andrew Lunn , Jason Cooper , Arnd Bergmann , Dmitri Epshtein , Nadav Haklai , Yelena Krivosheev , Gregory CLEMENT , Marcin Wojtas , Thomas Petazzoni , linux-arm-kernel@lists.infradead.org, Sebastian Hesselbarth MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP For small frame reuse the phys_addr variable instead of accessing the uncacheable value in the rx descriptor. Signed-off-by: Gregory CLEMENT --- drivers/net/ethernet/marvell/mvneta.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c index 87274d4ab102..1b84f746d748 100644 --- a/drivers/net/ethernet/marvell/mvneta.c +++ b/drivers/net/ethernet/marvell/mvneta.c @@ -1918,7 +1918,7 @@ static int mvneta_rx_swbm(struct mvneta_port *pp, int rx_todo, goto err_drop_frame; dma_sync_single_range_for_cpu(dev->dev.parent, - rx_desc->buf_phys_addr, + phys_addr, MVNETA_MH_SIZE + NET_SKB_PAD, rx_bytes, DMA_FROM_DEVICE);