diff --git a/libc/kernel/common/asm-generic/mutex-xchg.h b/libc/kernel/common/asm-generic/mutex-xchg.h
new file mode 100644
index 0000000..63a557e
--- /dev/null
+++ b/libc/kernel/common/asm-generic/mutex-xchg.h
@@ -0,0 +1,16 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   This header was automatically generated from a Linux kernel header
+ ***   of the same name, to make information necessary for userspace to
+ ***   call into the kernel available to libc.  It contains only constants,
+ ***   structures, and macros generated from the original header, and thus,
+ ***   contains no copyrightable information.
+ ***
+ ****************************************************************************
+ ****************************************************************************/
+#ifndef _ASM_GENERIC_MUTEX_XCHG_H
+#define _ASM_GENERIC_MUTEX_XCHG_H
+
+#define __mutex_slowpath_needs_to_unlock() 0
+#endif