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authorTony Luck <tony.luck@intel.com>2016-09-01 21:39:33 +0300
committerThomas Gleixner <tglx@linutronix.de>2016-09-05 12:47:31 +0300
commitb8fb03785d4de097507d0cf45873525e0ac4d2b2 (patch)
tree2cc452717df03039e4a94a6ed08fdd69be4f5d00 /include/linux/jump_label.h
parentc6935931c1894ff857616ff8549b61236a19148f (diff)
downloadlinux-b8fb03785d4de097507d0cf45873525e0ac4d2b2.tar.xz
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 <tony.luck@intel.com> Acked-by: Borislav Petkov <bp@suse.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: http://lkml.kernel.org/r/816881cf85bd3cf13385d212882618f38a3b5d33.1472754711.git.tony.luck@intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/linux/jump_label.h')
-rw-r--r--include/linux/jump_label.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/jump_label.h b/include/linux/jump_label.h
index 661af564fae8..595fb46213fc 100644
--- 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) \