linux-kernel - Re: [PATCH 00/14] kconfig: streamline distro configs for testers

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Message-ID: <20090821092149.GA5102@cr0.nay.redhat.com>
Date:	Fri, 21 Aug 2009 17:21:49 +0800
From:	Amerigo Wang <xiyou.wangcong@...il.com>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Peter Zijlstra <peterz@...radead.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Theodore Tso <tytso@....edu>,
	Arjan van de Ven <arjan@...radead.org>,
	Greg KH <greg@...ah.com>,
	"Luis R. Rodriguez" <mcgrof@...il.com>, zippel@...ux-m68k.org,
	linux-kbuild@...r.kernel.org, Sam Ravnborg <sam@...nborg.org>,
	Jonathan Corbet <corbet@....net>,
	Alan Jenkins <sourcejedi.lkml@...glemail.com>,
	Andi Kleen <andi@...stfloor.org>
Subject: Re: [PATCH 00/14] kconfig: streamline distro configs for testers

On Tue, Aug 18, 2009 at 10:56:34PM -0400, Steven Rostedt wrote:
>Here's my rebase of the prior push of streamline-config.pl.
>
>What this patch series does, is add my streamline-config.pl as a make
>option for users. What streamline-config.pl does is to look at the
>modules loaded in the system (lsmod) and then scans all the Makefiles
>and Kconfigs in the current directory tree to find what configs need
>to be set for the modules that are loaded.
>
>It then looks at the .config (if .config is not found, it looks
>in /boot, /proc/config.gz, vmlinux, configs.ko for .configs that it
>may be able to use). This script will remove all options set as =m that
>does not need to be set in order to build the modules found by lsmod.
>
>NOTE: This does not touch any =y option. If you do make allyesconfig
>and then run this, it will have not effect anything. Nor does this enable
>any thing that is not set. Although we may change this in the future.
>
>This patch series provides:
>
>  make localmodconfig
>
>which will look for a .config to streamline. Then it will run silentoldconfig
>to clean up any missing options.
>
>  make localyesconfig
>
>will remove all =m that is not needed to build the modules provided
>by lsmod, and then convert the rest to =y. Note, once you do this, no more
>changes will be made by these scripts.
>
>This is idea to help testers. Since a lot of people download a kernel
>from kernel.org and then uses the distro config to configure it. This can
>take hours to build. Now all a tester needs to do, is to download the
>kernel from kernel.org and run "make localmodconfig". This will disable
>most of the modules that are set in distro kernels and speed up the
>build time by magnitudes!

Awesome!!

If I understand this correctly, this is what many people desired to
have to configure kernel automatically.

I am just a little bit confused by the names "streamline" and
"localXXconfig", how about "autoconfig" ?

Thanks!
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