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-rw-r--r--arch/Kconfig14
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/Kconfig b/arch/Kconfig
index 2505740b81d..4f55c736be1 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -185,4 +185,18 @@ config HAVE_RCU_TABLE_FREE
config ARCH_HAVE_NMI_SAFE_CMPXCHG
bool
+config HAVE_ALIGNED_STRUCT_PAGE
+ bool
+ help
+ This makes sure that struct pages are double word aligned and that
+ e.g. the SLUB allocator can perform double word atomic operations
+ on a struct page for better performance. However selecting this
+ might increase the size of a struct page by a word.
+
+config HAVE_CMPXCHG_LOCAL
+ bool
+
+config HAVE_CMPXCHG_DOUBLE
+ bool
+
source "kernel/gcov/Kconfig"