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SubjectRe: [PATCH] make CONFIG_EXPERIMENTAL invisible and default
On Wed, Oct 03, 2012 at 09:47:12AM -0700, Paul E. McKenney wrote:
> On Wed, Oct 03, 2012 at 09:17:02AM -0700, Greg Kroah-Hartman wrote:
> > On Wed, Oct 03, 2012 at 06:25:38AM -0700, Paul E. McKenney wrote:
> > > On Tue, Oct 02, 2012 at 12:50:42PM -0700, Kees Cook wrote:
> > > > This config item has not carried much meaning for a while now and is
> > > > almost always enabled by default. As agreed during the Linux kernel
> > > > summit, it should be removed. As a first step, remove it from being
> > > > listed, and default it to on. Once it has been removed from all
> > > > subsystem Kconfigs, it will be dropped entirely.
> > > >
> > > > CC: Greg KH <gregkh@linuxfoundation.org>
> > > > CC: "Eric W. Biederman" <ebiederm@xmission.com>
> > > > CC: Serge Hallyn <serge.hallyn@canonical.com>
> > > > CC: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
> > > > CC: Andrew Morton <akpm@linux-foundation.org>
> > > > CC: Frederic Weisbecker <fweisbec@gmail.com>
> > > > Signed-off-by: Kees Cook <keescook@chromium.org>
> > > > ---
> > > >
> > > > This is the first of a series of 202 patches removing EXPERIMENTAL from
> > > > all the Kconfigs in the tree. Should I send them all to lkml (with all
> > > > the associated CCs), or do people want to cherry-pick changes from my
> > > > tree? I don't want to needlessly flood the list.
> > > >
> > > > http://git.kernel.org/?p=linux/kernel/git/kees/linux.git;a=shortlog;h=refs/heads/experimental
> > > >
> > > > I figure this patch can stand alone to at least make EXPERIMENTAL go
> > > > away from the menus, and give us a taste of what the removal would do
> > > > to builds.
> > >
> > > OK, I will bite... How should I flag an option that is initially only
> > > intended for those willing to take some level of risk?
> >
> > In the text say "You really don't want to enable this option, use at
> > your own risk!" Or something like that :)
>
> OK, so the only real hope for experimental features is to refrain from
> creating a config option for them, so that people wishing to use them
> must modify the code? Or is the philosophy that we keep things out of
> tree until we are comfortable with distros turning them on?

I think that should have been your philosophy for a long time, as they
turn on everything, and I don't blame them. Why would we have included
it in the kernel tree, unless we wanted people to use the option?

greg k-h


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