[PATCH 1/2 RESEND RFC] Make IKCONFIG an embedded option, enabled by default

From: Alexander Holler
Date: Thu Oct 18 2012 - 05:55:54 EST

Knowing (being sure) which configuration was used to build a (maybe running)
kernel is important for many scenarios.

It's usually much more important than saving a few kb in the size of
the kernel. Therefor turn on CONFIG_IKCONFIG and CONFIG_IKCONFIG_PROC
by default and make them visible only when CONFIG_EMBEDDED is enabled,
preventing premature optimization.

Because I just have seen too many systems where the used config got lost
and people were unable to rebuild an updated kernel, I finally prepared
this patch. IKCONFIG is already enabled in most distributions and
embedded kernels.

Signed-off-by: Alexander Holler <holler@xxxxxxxxxxxxx>
init/Kconfig | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/init/Kconfig b/init/Kconfig
index 6fdd6e3..add21a3 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -658,7 +658,8 @@ config RCU_BOOST_DELAY
endmenu # "RCU Subsystem"

- tristate "Kernel .config support"
+ tristate "Kernel .config support" if EMBEDDED
+ default y
This option enables the complete Linux kernel ".config" file
contents to be saved in the kernel. It provides documentation
@@ -670,8 +671,9 @@ config IKCONFIG
/proc/config.gz if enabled (below).

- bool "Enable access to .config through /proc/config.gz"
+ bool "Enable access to .config through /proc/config.gz" if EMBEDDED
depends on IKCONFIG && PROC_FS
+ default y
This option enables access to the kernel configuration file
through /proc/config.gz.

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