How to configure the Linux kernel/Code maturity level options

=Code maturity level options=
 * Howto configure the Linux kernel
 * Option: Prompt for development and/or incomplete code/drivers
 * Kernel Versions: ...; 2.6.15.6 - 2.6.19; ...
 * EXPERIMENTAL
 * (on/off)
 * 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 , , , , and  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 These are drivers that have been replaced by something else, and/or are scheduled to be removed in a future kernel release.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.


 * Option: CLEAN_COMPILE
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) Select only drivers expected to compile cleanly if EXPERIMENTAL
 * default y
 * Select this option if you don't even want to see the option to configure known-broken drivers.
 * If unsure, say Y


 * Option: BROKEN
 * Kernel Versions: 2.6.15.6 ...
 * (on/off)
 * depends on !CLEAN_COMPILE
 * default y


 * Option: BROKEN_ON_SMP
 * Kernel Versions: 2.6.15.6 ...
 * (on/off)
 * depends on BROKEN || !SMP
 * default y


 * Option: LOCK_KERNEL
 * Kernel Versions: 2.6.15.6 ...
 * (on/off)
 * depends on SMP || PREEMPT
 * default y


 * Option: INIT_ENV_ARG_LIMIT
 * Kernel Versions: 2.6.15.6 ...


 * default 32 if !USERMODE
 * default 128 if USERMODE
 * Maximum of each of the number of arguments and environment variables passed to init from the kernel command line.