linux-kernel - [PATCH 6/9] vdso: Split linux/array

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Message-Id: <20240903151437.1002990-7-vincenzo.frascino@arm.com>
Date: Tue,  3 Sep 2024 16:14:34 +0100
From: Vincenzo Frascino <vincenzo.frascino@....com>
To: linux-kernel@...r.kernel.org,
	linux-arch@...r.kernel.org,
	linux-mm@...ck.org
Cc: Vincenzo Frascino <vincenzo.frascino@....com>,
	Andy Lutomirski <luto@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	"Jason A . Donenfeld" <Jason@...c4.com>,
	Christophe Leroy <christophe.leroy@...roup.eu>,
	Michael Ellerman <mpe@...erman.id.au>,
	Nicholas Piggin <npiggin@...il.com>,
	Naveen N Rao <naveen@...nel.org>,
	Ingo Molnar <mingo@...hat.com>,
	Borislav Petkov <bp@...en8.de>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	"H . Peter Anvin" <hpa@...or.com>,
	Theodore Ts'o <tytso@....edu>,
	Arnd Bergmann <arnd@...db.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	Masami Hiramatsu <mhiramat@...nel.org>,
	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
Subject: [PATCH 6/9] vdso: Split linux/array_size.h

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@...nel.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Jason A. Donenfeld <Jason@...c4.com>
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@....com>
---
 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