diff --git a/libc/kernel/common/linux/completion.h b/libc/kernel/common/linux/completion.h
new file mode 100644
index 0000000..ee18211
--- /dev/null
+++ b/libc/kernel/common/linux/completion.h
@@ -0,0 +1,32 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   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 __LINUX_COMPLETION_H
+#define __LINUX_COMPLETION_H
+
+#include <linux/wait.h>
+
+struct completion {
+ unsigned int done;
+ wait_queue_head_t wait;
+};
+
+#define COMPLETION_INITIALIZER(work)   { 0, __WAIT_QUEUE_HEAD_INITIALIZER((work).wait) }
+
+#define COMPLETION_INITIALIZER_ONSTACK(work)   ({ init_completion(&work); work; })
+
+#define DECLARE_COMPLETION(work)   struct completion work = COMPLETION_INITIALIZER(work)
+
+#define DECLARE_COMPLETION_ONSTACK(work) DECLARE_COMPLETION(work)
+
+#define INIT_COMPLETION(x) ((x).done = 0)
+
+#endif