linux-kernel - [PATCH v3 1/5] linux/const.h: prefix include guard of uapi/linux/const.h with

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Date:   Thu, 22 Feb 2018 21:15:11 +0900
From:   Masahiro Yamada <yamada.masahiro@...ionext.com>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     David Howells <dhowells@...hat.com>,
        linux-arm-kernel@...ts.infradead.org,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH v3 1/5] linux/const.h: prefix include guard of uapi/linux/const.h with _UAPI

I am going to add include/linux/const.h for the kernel space.

Add _UAPI to the include guard of include/uapi/linux/const.h to
prepare for that.

Please notice the guard name of the exported one will be kept as-is.
So, this commit has no impact to the userspace even if some userspace
stuff depends on the guard macro names.

scripts/headers_install.sh processes exported headers by SED, and
rips off "_UAPI" from guard macro names.

  #ifndef _UAPI_LINUX_CONST_H
  #define _UAPI_LINUX_CONST_H

will be turned into

  #ifndef _LINUX_CONST_H
  #define _LINUX_CONST_H

Signed-off-by: Masahiro Yamada <yamada.masahiro@...ionext.com>
---

Changes in v3:
  - Split out as a prerequisite patch and describe detailed information

Changes in v2: None

 include/uapi/linux/const.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/include/uapi/linux/const.h b/include/uapi/linux/const.h
index 9253775..c5a60eb 100644
--- a/include/uapi/linux/const.h
+++ b/include/uapi/linux/const.h
@@ -1,8 +1,8 @@
 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
 /* const.h: Macros for dealing with constants.  */
 
-#ifndef _LINUX_CONST_H
-#define _LINUX_CONST_H
+#ifndef _UAPI_LINUX_CONST_H
+#define _UAPI_LINUX_CONST_H
 
 /* Some constant macros are used in both assembler and
  * C code.  Therefore we cannot annotate them always with
@@ -25,4 +25,4 @@
 #define _BITUL(x)	(_AC(1,UL) << (x))
 #define _BITULL(x)	(_AC(1,ULL) << (x))
 
-#endif /* !(_LINUX_CONST_H) */
+#endif /* _UAPI_LINUX_CONST_H */
-- 
2.7.4