kconfig: make allnoconfig disable options behind EMBEDDED and EXPERT

"make allnoconfig" exists to ease testing of minimal configurations.
Documentation/SubmitChecklist includes a note to test with allnoconfig.
This helps catch missing dependencies on common-but-not-required
functionality, which might otherwise go unnoticed.

However, allnoconfig still leaves many symbols enabled, because they're
hidden behind CONFIG_EMBEDDED or CONFIG_EXPERT.  For instance, allnoconfig
still has CONFIG_PRINTK and CONFIG_BLOCK enabled, so drivers don't
typically get build-tested with those disabled.

To address this, introduce a new Kconfig option "allnoconfig_y", used on
symbols which only exist to hide other symbols.  Set it on CONFIG_EMBEDDED
(which then selects CONFIG_EXPERT).  allnoconfig will then disable all the
symbols hidden behind those.

Signed-off-by: Josh Triplett <josh@joshtriplett.org>
Tested-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Michal Marek <mmarek@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

This commit is contained in:

Josh Triplett

2014-04-07 15:39:09 -07:00

committed by

Linus Torvalds

parent 527518f1a9

commit 5d2acfc7b9

8 changed files with 25 additions and 6 deletions

									
										scripts/kconfig/expr.h
									
		+3
		
												View File
												
				@@ -109,6 +109,9 @@ struct symbol {

				/* choice values need to be set before calculating this symbol value */

				#define SYMBOL_NEED_SET_CHOICE_VALUES  0x100000

				/* Set symbol to y if allnoconfig; used for symbols that hide others */

				#define SYMBOL_ALLNOCONFIG_Y 0x200000

				#define SYMBOL_MAXLENGTH	256

				#define SYMBOL_HASHSIZE		9973