linux-kernel - Re: config file part of kernel!

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Message-ID: <Pine.LNX.4.64.0804220956390.4897@shark.he.net>
Date:	Tue, 22 Apr 2008 09:58:44 -0700 (PDT)
From:	"Randy.Dunlap" <rdunlap@...otime.net>
To:	Sanjeev Aditya Naga <sanjeev.kernel@...il.com>
cc:	linux-kernel@...r.kernel.org
Subject: Re: config file part of kernel!

On Tue, 22 Apr 2008, Sanjeev Aditya Naga wrote:

> Hi,
> 
> Will it be good, if we make the `config` file (used to
> build a kernel) part of the built kernel. So that one in
> need, can extract it from the kernel using some
> userspace tool!?
> 
> During the configuration of kernel, we usually set
> the required functionality. However, if we delete the
> sources/config file or loose the config file, but later
> we wanted to add up some module(s) to the same
> kernel, it'd be great if we will be able to extract some
> info from the kernel along with the config params!??

This is already possible.

CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y

The former includes the config file in the kernel image.
The latter one puts it into /proc/config.gz as well.

-- 
~Randy
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