[PATCH 6/9] vdso: Split linux/array_size.h

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The VDSO implementation includes headers from outside of the
vdso/ namespace.

Split linux/array_size.h to make sure that the generic library
uses only the allowed namespace.

Cc: Andy Lutomirski <luto@xxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Jason A. Donenfeld <Jason@xxxxxxxxx>
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@xxxxxxx>
---
 include/linux/array_size.h |  8 +-------
 include/vdso/array_size.h  | 13 +++++++++++++
 2 files changed, 14 insertions(+), 7 deletions(-)
 create mode 100644 include/vdso/array_size.h

diff --git a/include/linux/array_size.h b/include/linux/array_size.h
index 06d7d83196ca..ca9e63b419c4 100644
--- a/include/linux/array_size.h
+++ b/include/linux/array_size.h
@@ -2,12 +2,6 @@
 #ifndef _LINUX_ARRAY_SIZE_H
 #define _LINUX_ARRAY_SIZE_H
 
-#include <linux/compiler.h>
-
-/**
- * ARRAY_SIZE - get the number of elements in array @arr
- * @arr: array to be sized
- */
-#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr))
+#include <vdso/array_size.h>
 
 #endif  /* _LINUX_ARRAY_SIZE_H */
diff --git a/include/vdso/array_size.h b/include/vdso/array_size.h
new file mode 100644
index 000000000000..4079f7a5f86e
--- /dev/null
+++ b/include/vdso/array_size.h
@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _VDSO_ARRAY_SIZE_H
+#define _VDSO_ARRAY_SIZE_H
+
+#include <linux/compiler.h>
+
+/**
+ * ARRAY_SIZE - get the number of elements in array @arr
+ * @arr: array to be sized
+ */
+#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr))
+
+#endif  /* _VDSO_ARRAY_SIZE_H */
-- 
2.34.1





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