linux-kernel - RE: [PATCH] lib: Add CRC64 ECMA module

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Date:	Tue, 30 Jul 2013 07:29:48 +0000
From:	Chereji Marian-Cornel-R27762 <R27762@...escale.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Grigore Sebastian-SGRIGOR1 <sgrigor1@...escale.com>,
	Schmitt Richard-B43082 <B43082@...escale.com>,
	Fleming Andy-AFLEMING <afleming@...escale.com>
Subject: RE: [PATCH] lib: Add CRC64 ECMA module


>> -----Original Message-----
>> From: Andrew Morton [mailto:akpm@...ux-foundation.org]
>> Sent: Saturday, July 27, 2013 1:01 AM
>> To: Chereji Marian-Cornel-R27762
>> Cc: linux-kernel@...r.kernel.org; Grigore Sebastian-SGRIGOR1; Schmitt 
>> Richard-B43082; Fleming Andy-AFLEMING
>> Subject: Re: [PATCH] lib: Add CRC64 ECMA module
>> 
>> On Fri, 12 Jul 2013 11:56:26 +0300 Marian Chereji <marian.chereji@...escale.com> wrote:
>> 
>> > Added implementation of CRC64 ECMA checksum.
>> > 
>> > Signed-off-by: Marian Chereji <marian.chereji@...escale.com>
>> > Reviewed-by: Varvara Andrei-B21317 <andrei.varvara@...escale.com>
>> > Reviewed-by: Fleming Andrew-AFLEMING <AFLEMING@...escale.com>
>> > ---
>> >  include/linux/crc64_ecma.h |   56 +++++++
>> >  lib/Kconfig                |    7 +
>> >  lib/Makefile               |    1 +
>> >  lib/crc64_ecma.c           |  341 ++++++++++++++++++++++++++++++++++++++++++++
>> > 
>> > Presumably you have some code which will need this library feature?
>> > 
>> > What code is that, and what is its status?
>> > 
>>
>> Hi Andrew,
>> 
>> we have an IP Acceleration driver for Freescale network processors 
>> which is using this CRC64. However, it still needs some work in order 
>> for it to become upstreamable.
>> 
>> Thought this CRC64 could helps others in the meantime since it doesn't 
>> have anything specific to do with our driver.
>
> Please don't top-post - it makes it very hard to conduct a conversation. 
>
> I don't think it's generally desirable to put code into lib/ unless we have an
> in-kernel user: it consumes resources and is untestable.  From a quick grep I don't see
> any current in-kernel code which might use this.
>
> So I'd propose that I keep this patch in -mm to get a bit of exposure and
> compilation testing and wait until the first user comes along, OK?

Hi Andrew,

seems like a good plan. We will do our best to speed up developments for
the driver.

Best regards,
Marian.


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