From patchwork Wed Aug 12 18:23:20 2009 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eilon Greenstein X-Patchwork-Id: 31246 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@bilbo.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from ozlabs.org (ozlabs.org [203.10.76.45]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "mx.ozlabs.org", Issuer "CA Cert Signing Authority" (verified OK)) by bilbo.ozlabs.org (Postfix) with ESMTPS id 24A34B6F20 for ; Thu, 13 Aug 2009 04:24:39 +1000 (EST) Received: by ozlabs.org (Postfix) id 0AA7FDDD0B; Thu, 13 Aug 2009 04:24:39 +1000 (EST) Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.176.167]) by ozlabs.org (Postfix) with ESMTP id 873E3DDD04 for ; Thu, 13 Aug 2009 04:24:38 +1000 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753271AbZHLSYT (ORCPT ); Wed, 12 Aug 2009 14:24:19 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753247AbZHLSYS (ORCPT ); Wed, 12 Aug 2009 14:24:18 -0400 Received: from mms3.broadcom.com ([216.31.210.19]:3470 "EHLO MMS3.broadcom.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753115AbZHLSYP (ORCPT ); Wed, 12 Aug 2009 14:24:15 -0400 Received: from [10.9.200.133] by MMS3.broadcom.com with ESMTP (Broadcom SMTP Relay (Email Firewall v6.3.2)); Wed, 12 Aug 2009 11:24:04 -0700 X-Server-Uuid: B55A25B1-5D7D-41F8-BC53-C57E7AD3C201 Received: from mail-irva-13.broadcom.com (10.11.16.103) by IRVEXCHHUB02.corp.ad.broadcom.com (10.9.200.133) with Microsoft SMTP Server id 8.1.375.2; Wed, 12 Aug 2009 11:25:29 -0700 Received: from [10.185.6.73] (lb-tlvb-eilong.il.broadcom.com [10.185.6.73]) by mail-irva-13.broadcom.com (Postfix) with ESMTP id 5ED5974D03; Wed, 12 Aug 2009 11:24:03 -0700 (PDT) Subject: [net-next 15/36] bnx2x: Prefetch the page containing the BD descriptor From: "Eilon Greenstein" Reply-to: eilong@broadcom.com To: "David Miller" cc: netdev@vger.kernel.org, "Vladislav Zolotarov" Organization: Broadcom Date: Wed, 12 Aug 2009 21:23:20 +0300 Message-ID: <1250101400.27379.167.camel@lb-tlvb-eilong> MIME-Version: 1.0 X-Mailer: Evolution 2.22.3.1 X-WSS-ID: 669DD74E60076687024-01-01 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Signed-off-by: Vladislav Zolotarov Signed-off-by: Eilon Greenstein --- drivers/net/bnx2x_main.c | 7 +++++++ 1 files changed, 7 insertions(+), 0 deletions(-) diff --git a/drivers/net/bnx2x_main.c b/drivers/net/bnx2x_main.c index e6fde5e..594168a 100644 --- a/drivers/net/bnx2x_main.c +++ b/drivers/net/bnx2x_main.c @@ -1497,6 +1497,13 @@ static int bnx2x_rx_int(struct bnx2x_fastpath *fp, int budget) bd_prod = RX_BD(bd_prod); bd_cons = RX_BD(bd_cons); + /* Prefetch the page containing the BD descriptor + at producer's index. It will be needed when new skb is + allocated */ + prefetch((void *)(PAGE_ALIGN((unsigned long) + (&fp->rx_desc_ring[bd_prod])) - + PAGE_SIZE + 1)); + cqe = &fp->rx_comp_ring[comp_ring_cons]; cqe_fp_flags = cqe->fast_path_cqe.type_error_flags;