diff --git a/include/asm-frv/futex.h b/include/asm-frv/futex.h
index fca9d90e32c9..9a0e9026ba5e 100644
--- a/include/asm-frv/futex.h
+++ b/include/asm-frv/futex.h
@@ -9,5 +9,11 @@
 
 extern int futex_atomic_op_inuser(int encoded_op, int __user *uaddr);
 
+static inline int
+futex_atomic_cmpxchg_inuser(int __user *uaddr, int oldval, int newval)
+{
+	return -ENOSYS;
+}
+
 #endif
 #endif
diff --git a/include/asm-generic/futex.h b/include/asm-generic/futex.h
index 3ae2c7347549..514bd401cd7e 100644
--- a/include/asm-generic/futex.h
+++ b/include/asm-generic/futex.h
@@ -49,5 +49,11 @@ futex_atomic_op_inuser (int encoded_op, int __user *uaddr)
 	return ret;
 }
 
+static inline int
+futex_atomic_cmpxchg_inuser(int __user *uaddr, int oldval, int newval)
+{
+	return -ENOSYS;
+}
+
 #endif
 #endif
diff --git a/include/asm-i386/futex.h b/include/asm-i386/futex.h
index 44b9db806474..1f39ad9d52a1 100644
--- a/include/asm-i386/futex.h
+++ b/include/asm-i386/futex.h
@@ -104,5 +104,11 @@ futex_atomic_op_inuser (int encoded_op, int __user *uaddr)
 	return ret;
 }
 
+static inline int
+futex_atomic_cmpxchg_inuser(int __user *uaddr, int oldval, int newval)
+{
+	return -ENOSYS;
+}
+
 #endif
 #endif
diff --git a/include/asm-mips/futex.h b/include/asm-mips/futex.h
index 2454c44a8f54..c5fb2d6d918a 100644
--- a/include/asm-mips/futex.h
+++ b/include/asm-mips/futex.h
@@ -99,5 +99,11 @@ futex_atomic_op_inuser (int encoded_op, int __user *uaddr)
 	return ret;
 }
 
+static inline int
+futex_atomic_cmpxchg_inuser(int __user *uaddr, int oldval, int newval)
+{
+	return -ENOSYS;
+}
+
 #endif
 #endif
diff --git a/include/asm-powerpc/futex.h b/include/asm-powerpc/futex.h
index 39e85f320a76..80ed9854e42b 100644
--- a/include/asm-powerpc/futex.h
+++ b/include/asm-powerpc/futex.h
@@ -81,5 +81,11 @@ static inline int futex_atomic_op_inuser (int encoded_op, int __user *uaddr)
 	return ret;
 }
 
+static inline int
+futex_atomic_cmpxchg_inuser(int __user *uaddr, int oldval, int newval)
+{
+	return -ENOSYS;
+}
+
 #endif /* __KERNEL__ */
 #endif /* _ASM_POWERPC_FUTEX_H */
diff --git a/include/asm-sparc64/futex.h b/include/asm-sparc64/futex.h
index 34c4b43d3f98..cd340a233156 100644
--- a/include/asm-sparc64/futex.h
+++ b/include/asm-sparc64/futex.h
@@ -83,4 +83,10 @@ static inline int futex_atomic_op_inuser(int encoded_op, int __user *uaddr)
 	return ret;
 }
 
+static inline int
+futex_atomic_cmpxchg_inuser(int __user *uaddr, int oldval, int newval)
+{
+	return -ENOSYS;
+}
+
 #endif /* !(_SPARC64_FUTEX_H) */
diff --git a/include/asm-x86_64/futex.h b/include/asm-x86_64/futex.h
index 8602c09bf89e..4f4cb3410d06 100644
--- a/include/asm-x86_64/futex.h
+++ b/include/asm-x86_64/futex.h
@@ -94,5 +94,11 @@ futex_atomic_op_inuser (int encoded_op, int __user *uaddr)
 	return ret;
 }
 
+static inline int
+futex_atomic_cmpxchg_inuser(int __user *uaddr, int oldval, int newval)
+{
+	return -ENOSYS;
+}
+
 #endif
 #endif