locking/static_keys: Provide DECLARE and well as DEFINE macros

We will need to provide declarations of static keys in header files. Provide DECLARE_STATIC_KEY_{TRUE,FALSE} macros. Signed-off-by: Tony Luck <[email protected]> Acked-by: Borislav Petkov <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Dan Williams <[email protected]> Cc: Linus Torvalds <[email protected]> Link: http://lkml.kernel.org/r/816881cf85bd3cf13385d212882618f38a3b5d33.1472754711.git.tony.luck@intel.com Signed-off-by: Thomas Gleixner <[email protected]>
opendata26 · Sep 5, 2016 · b8fb037 · b8fb037
1 parent c693593
commit b8fb037
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/include/linux/jump_label.h b/include/linux/jump_label.h
@@ -267,9 +267,15 @@ struct static_key_false {
 #define DEFINE_STATIC_KEY_TRUE(name)	\
 	struct static_key_true name = STATIC_KEY_TRUE_INIT
 
+#define DECLARE_STATIC_KEY_TRUE(name)	\
+	extern struct static_key_true name
+
 #define DEFINE_STATIC_KEY_FALSE(name)	\
 	struct static_key_false name = STATIC_KEY_FALSE_INIT
 
+#define DECLARE_STATIC_KEY_FALSE(name)	\
+	extern struct static_key_false name
+
 extern bool ____wrong_branch_error(void);
 
 #define static_key_enabled(x)							\