Re: [PATCH] default to n for GROUP_SCHED and FAIR_GROUP_SCHED

[Sergio Luis]

On Mon, May 5, 2008 at 3:24 PM, Sam Ravnborg <sam@xxxxxxxxxxxx> wrote:
> On Mon, May 05, 2008 at 07:15:01PM +0200, Ingo Molnar wrote:
>  >
>  > * Parag Warudkar <parag.warudkar@xxxxxxxxx> wrote:
>  >
>  > > sched-devel does not boot on my machine - stops right after PCI: Not
>  > > using mmconfig.
>  > >
>  > > Here is my config for sched-devel - I did a echo "n" | make oldconfig
>  > > after copying over the previous config file BTW. Should I try
>  > > disabling things in config? What's most likely to break boot? (Seems
>  > > likes there are a lot of significant changes in there.)
>  >
>  > every config is supposed to work, but in general you should pick the
>  > defaults instead of saying 'n' to all questions. As long as every
>  > question can be answered with an 'enter', this should work:
>  >
>  >   make oldconfig < /dev/null
>  >
>  > this non-interactive 'make oldconfig' will hang with the kconfig tool
>  > looping infinitely if there's any numeric question that cannot be
>  > answered via 'enter'.
>  >
>  > This is a many years old kconfig bug that is frequently hacked around in
>  > distro kernel packages but which has been ignored upstream - i've
>  > attached Fedora's nonint_oldconfig patch from Dave Jones below. (maybe
>  > Arjan wrote it originally?)
>
>  In latest kbuild.git I've added a new feature.
>
>         make K=.config alldefconfig
>
>  would give you eaxtly what you request here.
>  K= is used to say where to locate the base-configuration.
>
>  The above will give you a configuration based on your old configuration
>  with all new options set to default values.
>
>  That could maybe be more intuitive but when you consider it you
>  could have your base config in many different places.
>  Like /boot/config-xxx, /proc/config.gz etc.
>  So allowing the user to specify the base config with K= seems
>  like an acceptable solution.

Can I specify /proc/config.gz (gzipped) in the K parameter?
-sergio

>
>  Current version in kbuild.git is broken with respect to make O=...
>  builds but that will be fixed in an hour or so.
>
>  redhat has the added possibility to list new symbols.
>  This is not yet included in mainline.
>  Not that it is difficult - I just need to decide where/how to do it.
>
>         Sam
>
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