Commit 5a958db3 authored by Kees Cook's avatar Kees Cook
Browse files

make CONFIG_EXPERIMENTAL invisible and default 



This config item has not carried much meaning for a while now and is
almost always enabled by default (especially in distro builds). 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.

For items that really are experimental, maintainers should use "default
n", optionally include "(EXPERIMENTAL)" in the title, and add language to
the help text indicating why the item should be considered experimental.

For items that are dangerously experimental, the maintainer is encouraged
to follow the above title recommendation, add stronger language to the
help text, and optionally use (depending on the extent of the danger,
from least to most dangerous): printk(), add_taint(TAINT_WARN),
add_taint(TAINT_CRAP), WARN_ON(1), and CONFIG_BROKEN.

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: default avatarKees Cook <keescook@chromium.org>
Acked-by: default avatarSerge Hallyn <serge.hallyn@canonical.com>
Acked-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
parent 9931faca

init/Kconfig

+2 −29
Original line number Diff line number Diff line
@@ -33,35 +33,8 @@ config BUILDTIME_EXTABLE_SORT 
menu "General setup"



config EXPERIMENTAL

	bool "Prompt for development and/or incomplete code/drivers"

	---help---

	  Some of the various things that Linux supports (such as network

	  drivers, file systems, network protocols, etc.) can be in a state

	  of development where the functionality, stability, or the level of

	  testing is not yet high enough for general use. This is usually

	  known as the "alpha-test" phase among developers. If a feature is

	  currently in alpha-test, then the developers usually discourage

	  uninformed widespread use of this feature by the general public to

	  avoid "Why doesn't this work?" type mail messages. However, active

	  testing and use of these systems is welcomed. Just be aware that it

	  may not meet the normal level of reliability or it may fail to work

	  in some special cases. Detailed bug reports from people familiar

	  with the kernel internals are usually welcomed by the developers

	  (before submitting bug reports, please read the documents

	  <file:README>, <file:MAINTAINERS>, <file:REPORTING-BUGS>,

	  <file:Documentation/BUG-HUNTING>, and

	  <file:Documentation/oops-tracing.txt> in the kernel source).



	  This option will also make obsoleted drivers available. These are

	  drivers that have been replaced by something else, and/or are

	  scheduled to be removed in a future kernel release.



	  Unless you intend to help test and develop a feature or driver that

	  falls into this category, or you have a situation that requires

	  using these features, you should probably say N here, which will

	  cause the configurator to present you with fewer choices. If

	  you say Y here, you will be offered the choice of using features or

	  drivers that are currently considered to be in the alpha-test phase.

	bool

	default y



config BROKEN

	bool