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

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Date:	Tue, 20 May 2008 17:57:37 +0200 (CEST)
From:	Soumyadip Das Mahapatra <kernelhacker@...ualserver.org>
To:	Benoit Boissinot <bboissin@...il.com>
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, 20 May 2008, Benoit Boissinot wrote:

> 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.

Thanks Benoit for giving me such a precious advice. But sorry, I dont
have any benchmarking system in my hand(how can i have? i am just a
student, not a professional).
So if you do me a favour and kindly do it for me, please :-)

Anyway thanks again.

Soumya

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