From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934189AbYETPr6 (ORCPT ); Tue, 20 May 2008 11:47:58 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1764885AbYETPrr (ORCPT ); Tue, 20 May 2008 11:47:47 -0400 Received: from fg-out-1718.google.com ([72.14.220.157]:58701 "EHLO fg-out-1718.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1761944AbYETPrq (ORCPT ); Tue, 20 May 2008 11:47:46 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=Az3mRkan4PbJ5wolpSG+ZD29Ki0RGEanYXgy7dwRvYU4j+lv6T6R2Kh/CKDLLr4I2Fhvpd3oAHa4jAmfSb542ukJM/iRcac8N5aEwDRScX9z4OmLff2GKPC7PAQ57fS2n6JIaolj/vyyyd+ds7Z5QEozmPhXDmcCxCEzIMtLL/s= Message-ID: <40f323d00805200847t77b2d875j451d0eb9758cf9ff@mail.gmail.com> Date: Tue, 20 May 2008 17:47:44 +0200 From: "Benoit Boissinot" To: "Soumyadip Das Mahapatra" Subject: Re: [PATCH 1/2] bitreversal program Cc: "Akinobu Mita" , "Harvey Harrison" , linux-kernel@vger.kernel.org In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <1211229736.5915.86.camel@brick> <961aa3350805200513i4e02716eh79da76345718c3b2@mail.gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, May 20, 2008 at 5:25 PM, Soumyadip Das Mahapatra wrote: > Thanks for giving a reply Akinobu :-) > I forgot that bitrev8() is static in header file. Sorry for that. > > Below is my new patch considering this. Cant it be applicable? > Please review it. > > I know that my bitrev8() takes more instructions than that > of yours. But we have to think about faster access of cpu cache over that > of memory cache(which your bit_rev_table uses). I didn't review your patch, sorry. But I'm pretty sure that your patch won't be considered unless you provide benchmarks with numbers for different CPU/architecture. Ideally you should provide a script to test the correctness and the performance of your change that anyone could run on his computer. regards, Benoit