[RFC] First pass config fragment breakout for linaro kernel

Ryan Harkin ryan.harkin at linaro.org
Tue Mar 27 08:48:50 UTC 2012

Hi John,

On 26 March 2012 20:20, John Stultz <john.stultz at linaro.org> wrote:

>    So after talking about it at the last Linaro Connect, I've finally
> gotten around to making a first pass at providing config fragments for the
> linaro kernel.  I'd like to propose merging this for 12.04, and doing so
> early so we can make sure that all the desired config options are present
> in the fragments and to allow the vairous linaro build systems to begin
> migrating their config generation over.
> The current tree is here:
>    http://git.linaro.org/gitweb?**p=people/jstultz/android.git;**
> a=shortlog;h=refs/heads/**linaro-configs-3.3<http://git.linaro.org/gitweb?p=people/jstultz/android.git;a=shortlog;h=refs/heads/linaro-configs-3.3>
> The most relevant commit being:
>    http://git.linaro.org/gitweb?**p=people/jstultz/android.git;**
> a=commitdiff;h=**da8f6d20e1a768cb486005c5ec6258**2b6f92990d<http://git.linaro.org/gitweb?p=people/jstultz/android.git;a=commitdiff;h=da8f6d20e1a768cb486005c5ec62582b6f92990d>
> This includes config fragments for a linaro-base, an android-ization
> fragment, and  board configs for panda, origen and imx53.
> I suspect we'll need an ubuntu specific fragment as well as all the other
> board fragments.
> There is likely to be quite a bit of churn as we decide what sort of
> configs are really common and which are board specific. But that's ok.
> Configs are generated from the config fragments, as follows:
> ./scripts/kconfig/merge_**config.sh ./configs/linaro-base.conf
> ./configs/android.conf ./configs/panda.conf
> You may see warnings, which are not fatal, but should be reported so they
> can be properly cleaned up.
> I'm asking for Build folks to take a look at the above and consider how
> they might merge in fragment assembly into their system replacing their
> current config generation.
> I'd ask Landing teams to take a look at this, and report any missing
> config options or fragment chunks they'd like to see.
> thanks
> -john

Is there a recommended way of generating a config fragment for a board?

Currently, the vexpress config is quite large and its origin is unknown to
the LT.  If I remove the linaro-base.conf entries from our config, we still
end up with a config that is 793 lines long.

In that set, there are things like CONFIG_WLAN=y.  We don't have WLAN on
vexpress.  That's an easy case, but what about other more obscure things
like CONFIG_XZ_DEC_BCJ, or CONFIG_FS_POSIX_ACL.  I don't know what they
are, where they've come from or if we need them.  I know that the other
platforms don't set them.

Or is it simpler to start from scratch and add in what we know we need?

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.linaro.org/pipermail/linaro-dev/attachments/20120327/f00f827a/attachment.html>

More information about the linaro-dev mailing list