diff --git a/include/linux/kbuild.h b/include/linux/kbuild.h
new file mode 100644
index 0000000000000000000000000000000000000000..22a72198c14b7e338f4f10ed334f7c73be8cfcae
--- /dev/null
+++ b/include/linux/kbuild.h
@@ -0,0 +1,15 @@
+#ifndef __LINUX_KBUILD_H
+#define __LINUX_KBUILD_H
+
+#define DEFINE(sym, val) \
+        asm volatile("\n->" #sym " %0 " #val : : "i" (val))
+
+#define BLANK() asm volatile("\n->" : : )
+
+#define OFFSET(sym, str, mem) \
+	DEFINE(sym, offsetof(struct str, mem))
+
+#define COMMENT(x) \
+	asm volatile("\n->#" x)
+
+#endif
diff --git a/kernel/bounds.c b/kernel/bounds.c
index c3c55544db2fb515c05c191bfc5c47c26b3cb62e..3c5301381837407d986f06cddaf665eca71fb412 100644
--- a/kernel/bounds.c
+++ b/kernel/bounds.c
@@ -8,11 +8,7 @@
 /* Include headers that define the enum constants of interest */
 #include <linux/page-flags.h>
 #include <linux/mmzone.h>
-
-#define DEFINE(sym, val) \
-        asm volatile("\n->" #sym " %0 " #val : : "i" (val))
-
-#define BLANK() asm volatile("\n->" : : )
+#include <linux/kbuild.h>
 
 void foo(void)
 {