linux-kernel - Re: [PATCH] remove usage of memmem from scripts/kallsyms.c

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Date:	Wed, 20 Jun 2007 18:42:55 +0200
From:	Sam Ravnborg <sam@...nborg.org>
To:	Paulo Marques <pmarques@...popie.com>
Cc:	Segher Boessenkool <segher@...nel.crashing.org>,
	Mike Frysinger <vapier@...too.org>,
	Satyam Sharma <satyam.sharma@...il.com>,
	Andrew Morton <akpm@...l.org>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] remove usage of memmem from scripts/kallsyms.c

On Wed, Jun 20, 2007 at 04:53:15PM +0100, Paulo Marques wrote:
> Segher Boessenkool wrote:
> >>>>So we could remove the "#define _GNU_SOURCE" at the top
> >>>>of scripts/kallsyms.c too, presumably? If not (i.e. if there are
> >>>>more GNUisms left in that file anyway), then I'm not sure if we
> >>>>really gain by the change.
> >>>yes, i believe this is true
> >>
> >>I only tried in on x86 with my toolchain and it works, but I don't 
> >>know if it is worth the risk of breaking someone's setup for virtually 
> >>no gain...
> >
> >With the memmem() removed, the code builds (and works)
> >fine on several non-GNU systems.  It should be perfectly
> >safe to remove the _GNU_SOURCE. 
> 
> You're right. I went back in history and it was me who introduced the 
> _GNU_SOURCE when I added the memmem too (shame on me). So, if it worked 
> fine before, there is no reason to not work now that memmem is removed.
> 
> So I can:
> 
>  - send an incremental patch with just that line removed
> 
>  - send a replacement patch
> 
>  - just leave it for now and wait until I work on kallsyms again to 
> silently remove that line together with other changes
> 
> Andrew, what would you prefer?
Please send a replacement patch to me.
I will carry it in the kbuild tree.

	Sam
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