split the typecheck macros out of include/linux/kernel.h

Needed to fix up a recursive include snafu in
locking-add-typecheck-on-irqsave-and-friends-for-correct-flags.patch

Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2 files changed, 25 insertions, 20 deletions

diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index f9cd7a513f9c..5c4b1251e110 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -14,6 +14,7 @@
 #include <linux/compiler.h>
 #include <linux/bitops.h>
 #include <linux/log2.h>
+#include <linux/typecheck.h>
 #include <asm/byteorder.h>
 #include <asm/bug.h>
 
@@ -441,26 +442,6 @@ static inline char *pack_hex_byte(char *buf, u8 byte)
         const typeof( ((type *)0)->member ) *__mptr = (ptr);    \
         (type *)( (char *)__mptr - offsetof(type,member) );})
 
-/*
- * Check at compile time that something is of a particular type.
- * Always evaluates to 1 so you may use it easily in comparisons.
- */
-#define typecheck(type,x) \
-({      type __dummy; \
-        typeof(x) __dummy2; \
-        (void)(&__dummy == &__dummy2); \
-        1; \
-})
-
-/*
- * Check at compile time that 'function' is a certain type, or is a pointer
- * to that type (needs to use typedef for the function type.)
- */
-#define typecheck_fn(type,function) \
-({      typeof(type) __tmp = function; \
-        (void)__tmp; \
-})
-
 struct sysinfo;
 extern int do_sysinfo(struct sysinfo *info);
 
diff --git a/include/linux/typecheck.h b/include/linux/typecheck.h
new file mode 100644
index 000000000000..eb5b74a575be
--- /dev/null
+++ b/include/linux/typecheck.h
@@ -0,0 +1,24 @@
+#ifndef TYPECHECK_H_INCLUDED
+#define TYPECHECK_H_INCLUDED
+
+/*
+ * Check at compile time that something is of a particular type.
+ * Always evaluates to 1 so you may use it easily in comparisons.
+ */
+#define typecheck(type,x) \
+({      type __dummy; \
+        typeof(x) __dummy2; \
+        (void)(&__dummy == &__dummy2); \
+        1; \
+})
+
+/*
+ * Check at compile time that 'function' is a certain type, or is a pointer
+ * to that type (needs to use typedef for the function type.)
+ */
+#define typecheck_fn(type,function) \
+({      typeof(type) __tmp = function; \
+        (void)__tmp; \
+})
+
+#endif          /* TYPECHECK_H_INCLUDED */