printk: declare printk_ratelimit_state in ratelimit.h

Adding declaration of printk_ratelimit_state in ratelimit.h removes
potential build breakage and following sparse warning:

 kernel/printk.c:1426:1: warning: symbol 'printk_ratelimit_state' was not declared. Should it be static?

[akpm@linux-foundation.org: remove unneeded ifdef]
Signed-off-by: Namhyung Kim <namhyung@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/ratelimit.h b/include/linux/ratelimit.h
index 8f69d09a41a5..03ff67b0cdf5 100644
--- a/include/linux/ratelimit.h
+++ b/include/linux/ratelimit.h
@@ -36,6 +36,8 @@ static inline void ratelimit_state_init(struct ratelimit_state *rs,
         rs->begin = 0;
 }
 
+extern struct ratelimit_state printk_ratelimit_state;
+
 extern int ___ratelimit(struct ratelimit_state *rs, const char *func);
 #define __ratelimit(state) ___ratelimit(state, __func__)