linux-kernel - Re: [PATCH 1/2] bitreversal program

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Message-ID: <40f323d00805200847t77b2d875j451d0eb9758cf9ff@mail.gmail.com>
Date:	Tue, 20 May 2008 17:47:44 +0200
From:	"Benoit Boissinot" <bboissin@...il.com>
To:	"Soumyadip Das Mahapatra" <kernelhacker@...ualserver.org>
Cc:	"Akinobu Mita" <akinobu.mita@...il.com>,
	"Harvey Harrison" <harvey.harrison@...il.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] bitreversal program

On Tue, May 20, 2008 at 5:25 PM, Soumyadip Das Mahapatra
<kernelhacker@...ualserver.org> 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
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