diff --git a/sys/amd64/include/atomic.h b/sys/amd64/include/atomic.h
index f0191970e8c..d61fb359e26 100644
--- a/sys/amd64/include/atomic.h
+++ b/sys/amd64/include/atomic.h
@@ -102,14 +102,6 @@
  * atomic_readandclear_long(P)	(return (*(u_long *)(P)); *(u_long *)(P) = 0;)
  */
 
-/*
- * The above functions are expanded inline in the statically-linked
- * kernel.  Lock prefixes are generated if an SMP kernel is being
- * built.
- *
- * Kernel modules call real functions which are built into the kernel.
- * This allows kernel modules to be portable between UP and SMP systems.
- */
 #if !defined(__GNUCLIKE_ASM)
 #define	ATOMIC_ASM(NAME, TYPE, OP, CONS, V)			\
 void atomic_##NAME##_##TYPE(volatile u_##TYPE *p, u_##TYPE v);	\
diff --git a/sys/i386/include/atomic.h b/sys/i386/include/atomic.h
index 2e72de935c2..154144a470c 100644
--- a/sys/i386/include/atomic.h
+++ b/sys/i386/include/atomic.h
@@ -96,14 +96,6 @@ __mbu(void)
  * atomic_readandclear_long(P)	(return (*(u_long *)(P)); *(u_long *)(P) = 0;)
  */
 
-/*
- * The above functions are expanded inline in the statically-linked
- * kernel.  Lock prefixes are generated if an SMP kernel is being
- * built.
- *
- * Kernel modules call real functions which are built into the kernel.
- * This allows kernel modules to be portable between UP and SMP systems.
- */
 #if !defined(__GNUCLIKE_ASM)
 #define	ATOMIC_ASM(NAME, TYPE, OP, CONS, V)			\
 void atomic_##NAME##_##TYPE(volatile u_##TYPE *p, u_##TYPE v);	\