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=-8.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT 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 B61E1ECE561 for ; Mon, 24 Sep 2018 09:11:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7921320989 for ; Mon, 24 Sep 2018 09:11:14 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7921320989 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=bootlin.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728445AbeIXPMP (ORCPT ); Mon, 24 Sep 2018 11:12:15 -0400 Received: from mail.bootlin.com ([62.4.15.54]:56026 "EHLO mail.bootlin.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728196AbeIXPMP (ORCPT ); Mon, 24 Sep 2018 11:12:15 -0400 Received: by mail.bootlin.com (Postfix, from userid 110) id 1F8A820731; Mon, 24 Sep 2018 11:11:09 +0200 (CEST) Received: from mc-bl-xps13.lan (AAubervilliers-681-1-42-80.w90-88.abo.wanadoo.fr [90.88.160.80]) by mail.bootlin.com (Postfix) with ESMTPSA id C8D6F20618; Mon, 24 Sep 2018 11:11:08 +0200 (CEST) From: Maxime Chevallier To: davem@davemloft.net Cc: Maxime Chevallier , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Antoine Tenart , thomas.petazzoni@bootlin.com, gregory.clement@bootlin.com, miquel.raynal@bootlin.com, nadavh@marvell.com, stefanc@marvell.com, ymarkman@marvell.com, mw@semihalf.com Subject: [PATCH net-next 1/2] net: mvpp2: support XPS by mapping TX queues to CPUs Date: Mon, 24 Sep 2018 11:11:05 +0200 Message-Id: <20180924091106.15094-2-maxime.chevallier@bootlin.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20180924091106.15094-1-maxime.chevallier@bootlin.com> References: <20180924091106.15094-1-maxime.chevallier@bootlin.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Since the PPv2 controller has multiple TX queues, we can spread traffic by assining TX queues to CPUs, allowing to use XPS to balance egress traffic between CPUs. Suggested-by : Yan Markman Signed-off-by: Maxime Chevallier --- drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c index d30ccc515bb7..bdacb9577216 100644 --- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c +++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c @@ -2423,13 +2423,17 @@ static int mvpp2_setup_rxqs(struct mvpp2_port *port) static int mvpp2_setup_txqs(struct mvpp2_port *port) { struct mvpp2_tx_queue *txq; - int queue, err; + int queue, err, cpu; for (queue = 0; queue < port->ntxqs; queue++) { txq = port->txqs[queue]; err = mvpp2_txq_init(port, txq); if (err) goto err_cleanup; + + /* Assign this queue to a CPU */ + cpu = queue % num_present_cpus(); + netif_set_xps_queue(port->dev, cpumask_of(cpu), queue); } if (port->has_tx_irqs) { -- 2.11.0