linux-kernel - Re: defconfig strangeness

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Message-ID: <20100423054832.GE3995@cr0.nay.redhat.com>
Date:	Fri, 23 Apr 2010 13:48:32 +0800
From:	Amerigo Wang <xiyou.wangcong@...il.com>
To:	Nicholas Mc Guire <der.herr@...r.at>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: defconfig strangeness

On Thu, Apr 22, 2010 at 06:07:23PM +0200, Nicholas Mc Guire wrote:
>
>HI !
>
> doing a series of static code analysis on 2.6.34-rcX each of them with 
> defconfig (x86 32bit) - the strangeness is that even though the config
> file is the same for rc3...5 the number of files actually compiled 
> is very different. (linux-2.6 git tree)
>
> 2.6.34-rc5 1695
> 2.6.34-rc4 3404
> 2.6.34-rc3 5109
>
> I diffed the .configs - rc4/rc5 only shows
>
>3,4c3,4
>< # Linux kernel version: 2.6.34-rc4
>< # Thu Apr 22 11:37:43 2010
>---
>> # Linux kernel version: 2.6.34-rc5
>> # Thu Apr 22 10:44:02 2010
>
> why then this large difference in files being compiled ? 
>
> any hint apprecieated.
>

Hmm, interesting.

I guess it would be due to some dependences.

Use the way that you used to find the number of compiled files to
find which files are compiled, make a sorted list and do a diff.

Thanks.
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