auto import from //depot/cupcake/@135843
diff --git a/libc/kernel/common/asm-generic/bitops/non-atomic.h b/libc/kernel/common/asm-generic/bitops/non-atomic.h
new file mode 100644
index 0000000..727f736
--- /dev/null
+++ b/libc/kernel/common/asm-generic/bitops/non-atomic.h
@@ -0,0 +1,20 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ *** 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_BITOPS_NON_ATOMIC_H_
+#define _ASM_GENERIC_BITOPS_NON_ATOMIC_H_
+
+#include <asm/types.h>
+
+#define BITOP_MASK(nr) (1UL << ((nr) % BITS_PER_LONG))
+#define BITOP_WORD(nr) ((nr) / BITS_PER_LONG)
+
+#endif