[patch 02/21] mutex subsystem, add typecheck_fn(type, function)

[Ingo Molnar]

From: Chuck Ebbert <76306...@compuserve.com>

add typecheck_fn(type, function) to do type-checking of function
pointers.

Modified-by: Ingo Molnar <mi...@elte.hu>

(made it typeof() based, instead of typedef based.)

Signed-off-by: Chuck Ebbert <76306...@compuserve.com>
Signed-off-by: Ingo Molnar <mi...@elte.hu>

----

include/linux/kernel.h | 9 +++++++++
1 files changed, 9 insertions(+)

Index: linux/include/linux/kernel.h
===================================================================
--- linux.orig/include/linux/kernel.h
+++ linux/include/linux/kernel.h
@@ -286,6 +286,15 @@ extern void dump_stack(void);
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 /* __KERNEL__ */

#define SI_LOAD_SHIFT 16
-
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[Ingo Molnar]