| From b8fb03785d4de097507d0cf45873525e0ac4d2b2 Mon Sep 17 00:00:00 2001 |
| From: Tony Luck <tony.luck@intel.com> |
| Date: Thu, 1 Sep 2016 11:39:33 -0700 |
| Subject: [PATCH] locking/static_keys: Provide DECLARE and well as DEFINE |
| macros |
| |
| commit b8fb03785d4de097507d0cf45873525e0ac4d2b2 upstream. |
| |
| 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> |
| |
| 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) \ |
| -- |
| 2.15.0 |
| |