diff --git a/include/linux/compiler.h b/include/linux/compiler.h
index 37bcb50..04fb513 100644
--- a/include/linux/compiler.h
+++ b/include/linux/compiler.h
@@ -261,6 +261,11 @@
 # define __section(S) __attribute__ ((__section__(#S)))
 #endif
 
+/* Are two types/vars the same type (ignoring qualifiers)? */
+#ifndef __same_type
+# define __same_type(a, b) __builtin_types_compatible_p(typeof(a), typeof(b))
+#endif
+
 /*
  * Prevent the compiler from merging or refetching accesses.  The compiler
  * is also forbidden from reordering successive instances of ACCESS_ONCE(),