Skip to content

Commit

Permalink
Documentation: fix the explanation of Kconfig files
Browse files Browse the repository at this point in the history
Fix the obvious errors in the explanation of Kconfig files.

Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
  • Loading branch information
Robert P. J. Day authored and Linus Torvalds committed May 24, 2007
1 parent 9aaffc8 commit 6754bb4
Showing 1 changed file with 30 additions and 19 deletions.
49 changes: 30 additions & 19 deletions Documentation/CodingStyle
Original file line number Diff line number Diff line change
Expand Up @@ -495,29 +495,40 @@ re-formatting you may want to take a look at the man page. But
remember: "indent" is not a fix for bad programming.


Chapter 10: Configuration-files
Chapter 10: Kconfig configuration files

For configuration options (arch/xxx/Kconfig, and all the Kconfig files),
somewhat different indentation is used.
For all of the Kconfig* configuration files throughout the source tree,
the indentation is somewhat different. Lines under a "config" definition
are indented with one tab, while help text is indented an additional two
spaces. Example:

Help text is indented with 2 spaces.

if CONFIG_EXPERIMENTAL
tristate CONFIG_BOOM
default n
help
Apply nitroglycerine inside the keyboard (DANGEROUS)
bool CONFIG_CHEER
depends on CONFIG_BOOM
default y
config AUDIT
bool "Auditing support"
depends on NET
help
Output nice messages when you explode
endif
Enable auditing infrastructure that can be used with another
kernel subsystem, such as SELinux (which requires this for
logging of avc messages output). Does not do system-call
auditing without CONFIG_AUDITSYSCALL.

Features that might still be considered unstable should be defined as
dependent on "EXPERIMENTAL":

config SLUB
depends on EXPERIMENTAL && !ARCH_USES_SLAB_PAGE_STRUCT
bool "SLUB (Unqueued Allocator)"
...

while seriously dangerous features (such as write support for certain
filesystems) should advertise this prominently in their prompt string:

config ADFS_FS_RW
bool "ADFS write support (DANGEROUS)"
depends on ADFS_FS
...

Generally, CONFIG_EXPERIMENTAL should surround all options not considered
stable. All options that are known to trash data (experimental write-
support for file-systems, for instance) should be denoted (DANGEROUS), other
experimental options should be denoted (EXPERIMENTAL).
For full documentation on the configuration files, see the file
Documentation/kbuild/kconfig-language.txt.


Chapter 11: Data structures
Expand Down

0 comments on commit 6754bb4

Please sign in to comment.