[PATCH 1/4] asm-generic/unaligned.h: Extract common header for vDSO

[Christophe Leroy]

getrandom vDSO implementation requires __put_unaligned_t() and
__put_unaligned_t() but including asm-generic/unaligned.h pulls
too many other headers.

Follow the same approach as for most things in include/vdso/,
see for instance commit 8165b57bca21 ("linux/const.h: Extract
common header for vDSO"): Move __get_unaligned_t and __put_unaligned_t
into a new unaligned.h living in the vdso/ include directory.

Signed-off-by: Christophe Leroy <christophe.leroy at csgroup.eu>
---
 include/asm-generic/unaligned.h | 11 +----------
 include/vdso/unaligned.h        | 15 +++++++++++++++
 2 files changed, 16 insertions(+), 10 deletions(-)
 create mode 100644 include/vdso/unaligned.h

diff --git a/include/asm-generic/unaligned.h b/include/asm-generic/unaligned.h
index a84c64e5f11e..95acdd70b3b2 100644
--- a/include/asm-generic/unaligned.h
+++ b/include/asm-generic/unaligned.h
@@ -8,16 +8,7 @@
  */
 #include <linux/unaligned/packed_struct.h>
 #include <asm/byteorder.h>
-
-#define __get_unaligned_t(type, ptr) ({						\
-	const struct { type x; } __packed *__pptr = (typeof(__pptr))(ptr);	\
-	__pptr->x;								\
-})
-
-#define __put_unaligned_t(type, val, ptr) do {					\
-	struct { type x; } __packed *__pptr = (typeof(__pptr))(ptr);		\
-	__pptr->x = (val);							\
-} while (0)
+#include <vdso/unaligned.h>
 
 #define get_unaligned(ptr)	__get_unaligned_t(typeof(*(ptr)), (ptr))
 #define put_unaligned(val, ptr) __put_unaligned_t(typeof(*(ptr)), (val), (ptr))
diff --git a/include/vdso/unaligned.h b/include/vdso/unaligned.h
new file mode 100644
index 000000000000..eee3d2a4dbe4
--- /dev/null
+++ b/include/vdso/unaligned.h
@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __VDSO_UNALIGNED_H
+#define __VDSO_UNALIGNED_H
+
+#define __get_unaligned_t(type, ptr) ({						\
+	const struct { type x; } __packed *__pptr = (typeof(__pptr))(ptr);	\
+	__pptr->x;								\
+})
+
+#define __put_unaligned_t(type, val, ptr) do {					\
+	struct { type x; } __packed *__pptr = (typeof(__pptr))(ptr);		\
+	__pptr->x = (val);							\
+} while (0)
+
+#endif /* __VDSO_UNALIGNED_H */
-- 
2.44.0