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gcov: disable CONFIG_CONSTRUCTORS when not needed by CONFIG_GCOV_KERNEL

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CONFIG_CONSTRUCTORS controls support for running constructor functions at
kernel init time.  According to commit b99b87f70c ("kernel:
constructor support"), gcov (CONFIG_GCOV_KERNEL) needs this.  However,
CONFIG_CONSTRUCTORS currently defaults to y, with no option to disable it,
and CONFIG_GCOV_KERNEL depends on it.  Instead, default it to n and have
CONFIG_GCOV_KERNEL select it, so that the normal case of
CONFIG_GCOV_KERNEL=n will result in CONFIG_CONSTRUCTORS=n.

Observed in the short list of =y values in a minimal kernel configuration.

Signed-off-by: Josh Triplett <josh@joshtriplett.org>
Acked-by: WANG Cong <xiyou.wangcong@gmail.com>
Acked-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
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 2011-06-15 15:08:47 -07:00 committed by Linus Torvalds
parent b0461a44a2
commit d2c3225879
2 changed files with 2 additions and 2 deletions
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1
init/Kconfig
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@ -19,7 +19,6 @@ config DEFCONFIG_LIST
config CONSTRUCTORS
bool
depends on !UML
default y
config HAVE_IRQ_WORK
bool

3
kernel/gcov/Kconfig
View file

@ -2,7 +2,8 @@ menu "GCOV-based kernel profiling"
config GCOV_KERNEL
bool "Enable gcov-based kernel profiling"
depends on DEBUG_FS && CONSTRUCTORS
depends on DEBUG_FS
select CONSTRUCTORS
default n
---help---
This option enables gcov-based code profiling (e.g. for code coverage