From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Eilon Greenstein" Subject: [net-next 15/36] bnx2x: Prefetch the page containing the BD descriptor Date: Wed, 12 Aug 2009 21:23:20 +0300 Message-ID: <1250101400.27379.167.camel@lb-tlvb-eilong> Reply-To: eilong@broadcom.com Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, "Vladislav Zolotarov" To: "David Miller" Return-path: 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 Sender: netdev-owner@vger.kernel.org List-ID: 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; -- 1.5.4.3