path: root/init
diff options
authorArd Biesheuvel <>2016-03-15 14:58:12 -0700
committerLinus Torvalds <>2016-03-15 16:55:16 -0700
commit4d5d5664c9008c30ade92a56f722223d251883d7 (patch)
tree120d5ac0b99caf5859851f96b1af78eaa88a2f38 /init
parent6b8c69e4384b0bcf1936c2137804840212daaf69 (diff)
x86: kallsyms: disable absolute percpu symbols on !SMP
scripts/kallsyms.c has a special --absolute-percpu command line option which deals with the zero based per cpu offsets that are used when building for SMP on x86_64. This means that the option should only be passed in that case, so add a Kconfig symbol with the correct predicate, and use that instead. Signed-off-by: Ard Biesheuvel <> Tested-by: Guenter Roeck <> Reviewed-by: Kees Cook <> Tested-by: Kees Cook <> Acked-by: Rusty Russell <> Cc: Heiko Carstens <> Cc: Michael Ellerman <> Cc: Ingo Molnar <> Cc: H. Peter Anvin <> Cc: Benjamin Herrenschmidt <> Cc: Michal Marek <> Cc: Arnd Bergmann <> Signed-off-by: Andrew Morton <> Signed-off-by: Linus Torvalds <>
Diffstat (limited to 'init')
1 files changed, 4 insertions, 0 deletions
diff --git a/init/Kconfig b/init/Kconfig
index 22320804fbaf..b17824a875fa 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -1420,6 +1420,10 @@ config KALLSYMS_ALL
Say N unless you really need all symbols.
+ bool
+ default X86_64 && SMP
config PRINTK
default y
bool "Enable support for printk" if EXPERT