The patch titled
Subject: kbuild: fix optimization level choice default
has been added to the -mm tree. Its filename is
kbuild-fix-optimization-level-choice-default.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/kbuild-fix-optimization-level-choice-default.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/kbuild-fix-optimization-level-choice-default.patch
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------------------------------------------------------
From: Ulf Magnusson <ulfalizer@xxxxxxxxx>
Subject: kbuild: fix optimization level choice default
The choice containing the CC_OPTIMIZE_FOR_PERFORMANCE symbol accidentally
added a "CONFIG_" prefix when trying to make it the default, selecting an
undefined symbol as the default.
The mistake is harmless here: Since the default symbol is not visible, the
choice falls back on using the visible symbol as the default instead,
which is CC_OPTIMIZE_FOR_PERFORMANCE, as intended.
A patch that makes Kconfig print a warning in this case has been submitted
separately: http://www.spinics.net/lists/linux-kbuild/msg15566.html
Link: http://lkml.kernel.org/r/1507074806-21577-1-git-send-email-ulfalizer@xxxxxxxxx
Signed-off-by: Ulf Magnusson <ulfalizer@xxxxxxxxx>
Acked-by: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Paul E . McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
Cc: Nicolas Pitre <nicolas.pitre@xxxxxxxxxx>
Cc: Tejun Heo <tj@xxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Kees Cook <keescook@xxxxxxxxxxxx>
Cc: Daniel Mack <daniel@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
init/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN init/Kconfig~kbuild-fix-optimization-level-choice-default init/Kconfig
--- a/init/Kconfig~kbuild-fix-optimization-level-choice-default
+++ a/init/Kconfig
@@ -1033,7 +1033,7 @@ endif
choice
prompt "Compiler optimization level"
- default CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE
+ default CC_OPTIMIZE_FOR_PERFORMANCE
config CC_OPTIMIZE_FOR_PERFORMANCE
bool "Optimize for performance"
_
Patches currently in -mm which might be from ulfalizer@xxxxxxxxx are
kbuild-fix-optimization-level-choice-default.patch
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