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Date:   Sat, 2 May 2020 09:40:24 -0400
From:   Steven Rostedt <>
To:     Changbin Du <>
Cc:     Masahiro Yamada <>,
        Jonathan Corbet <>,,,
 preserve some kconfigs

On Sat, 2 May 2020 21:30:54 +0800
Changbin Du <> wrote:

> > > Sometimes it is useful to preserve batches of configs when making
> > > localmodconfig. For example, I usually don't want any usb and fs
> > > modules to be disabled. Now we can do it by:
> > > 
> > >  $ make LOCALMODCONFIG_PRESERVE="drivers/usb;fs" localmodconfig  
> > 
> > That's too much typing ;-) What about just "KEEP='drivers/usb;fs'"?
> >  
> I think we'd better use a long name since it will be passed to the entire kbuild.
> And we alreay have one named LOCALMODCONFIG_DEBUG. The prefix LOCALMODCONFIG_
> can help to avoid namespace pollution.

I politely disagree. Build options is not common. The
LOCALMODCONFIG_DEBUG is an environment variable, which I couldn't just
use DEBUG.

If you absolutely require a prefix, shorten it to LMC_ or something. I
already hate typing 'localmodconfig' once ;-)

-- Steve

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