From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Eilon Greenstein" Subject: Re: [PATCH net-next-2.6] bnx2x: Remove two prefetch() Date: Wed, 28 Apr 2010 16:14:15 +0300 Message-ID: <1272460455.30392.24.camel@lb-tlvb-eilong.il.broadcom.com> References: <1272018366.7895.7930.camel@edumazet-laptop> <20100427.150817.84390202.davem@davemloft.net> <1272406693.2343.26.camel@edumazet-laptop> <20100427.151937.62344362.davem@davemloft.net> Reply-To: eilong@broadcom.com Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Cc: vladz@broadcom.com, eliezert@gmail.com, "eric.dumazet@gmail.com" , "xiaosuo@gmail.com" , "hadi@cyberus.ca" , "therbert@google.com" , "shemminger@vyatta.com" , "netdev@vger.kernel.org" To: "David Miller" Return-path: Received: from mms3.broadcom.com ([216.31.210.19]:4548 "EHLO MMS3.broadcom.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752603Ab0D1NO3 (ORCPT ); Wed, 28 Apr 2010 09:14:29 -0400 In-Reply-To: <20100427.151937.62344362.davem@davemloft.net> Sender: netdev-owner@vger.kernel.org List-ID: On Tue, 2010-04-27 at 15:19 -0700, David Miller wrote: > From: Eric Dumazet > Date: Wed, 28 Apr 2010 00:18:13 +0200 > > > [PATCH net-next-2.6] bnx2x: Remove two prefetch() > > > > 1) Even on 64bit arches, sizeof(struct sk_buff) < 256 > > 2) No need to prefetch same pointer twice. > > > > Signed-off-by: Eric Dumazet > > CC: Eilon Greenstein > > Eilon please review and ACK/NACK Vlad ran few benchmarks, and we couldn't find any justification for those prefetch calls. After consulting with Eliezer Tamir (the original author) we are glad to Ack this patch. Thanks Eric! Acked-by: