diff --git a/sys/compat/linuxkpi/common/include/linux/compiler.h b/sys/compat/linuxkpi/common/include/linux/compiler.h
index 2b9ae100a59d..d5e475839832 100644
--- a/sys/compat/linuxkpi/common/include/linux/compiler.h
+++ b/sys/compat/linuxkpi/common/include/linux/compiler.h
@@ -64,6 +64,7 @@
 #define	__attribute_const__		__attribute__((__const__))
 #undef __always_inline
 #define	__always_inline			inline
+#define	noinline			__noinline
 #define	____cacheline_aligned		__aligned(CACHE_LINE_SIZE)
 
 #define	likely(x)			__builtin_expect(!!(x), 1)
@@ -71,6 +72,7 @@
 #define typeof(x)			__typeof(x)
 
 #define	uninitialized_var(x)		x = x
+#define	__maybe_unused			__unused
 #define	__always_unused			__unused
 #define	__must_check			__result_use_check