linux-kernel - [PATCH 01/19] linux/const.h: Extract common header for vDSO

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Message-Id: <20200213161614.23246-2-vincenzo.frascino@arm.com>
Date:   Thu, 13 Feb 2020 16:15:56 +0000
From:   Vincenzo Frascino <vincenzo.frascino@....com>
To:     linux-arch@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-mips@...r.kernel.org,
        clang-built-linux@...glegroups.com, x86@...nel.org
Cc:     catalin.marinas@....com, will.deacon@....com, arnd@...db.de,
        linux@...linux.org.uk, paul.burton@...s.com, tglx@...utronix.de,
        luto@...nel.org, mingo@...hat.com, bp@...en8.de, sboyd@...nel.org,
        salyzyn@...roid.com, pcc@...gle.com, 0x7f454c46@...il.com,
        ndesaulniers@...gle.com, avagin@...nvz.org
Subject: [PATCH 01/19] linux/const.h: Extract common header for vDSO

The vDSO library should only include the necessary headers required for
a userspace library (UAPI and a minimal set of kernel headers). To make
this possible it is necessary to isolate from the kernel headers the
common parts that are strictly necessary to build the library.

Split const.h into linux and common headers to make the latter suitable
for inclusion in the vDSO library.

Signed-off-by: Vincenzo Frascino <vincenzo.frascino@....com>
---
 include/common/const.h | 10 ++++++++++
 include/linux/const.h  |  5 +----
 2 files changed, 11 insertions(+), 4 deletions(-)
 create mode 100644 include/common/const.h

diff --git a/include/common/const.h b/include/common/const.h
new file mode 100644
index 000000000000..cc209eec47a1
--- /dev/null
+++ b/include/common/const.h
@@ -0,0 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __COMMON_CONST_H
+#define __COMMON_CONST_H
+
+#include <uapi/linux/const.h>
+
+#define UL(x)		(_UL(x))
+#define ULL(x)		(_ULL(x))
+
+#endif /* __COMMON_CONST_H */
diff --git a/include/linux/const.h b/include/linux/const.h
index 7b55a55f5911..447a5b98d5a3 100644
--- a/include/linux/const.h
+++ b/include/linux/const.h
@@ -1,9 +1,6 @@
 #ifndef _LINUX_CONST_H
 #define _LINUX_CONST_H
 
-#include <uapi/linux/const.h>
-
-#define UL(x)		(_UL(x))
-#define ULL(x)		(_ULL(x))
+#include <common/const.h>
 
 #endif /* _LINUX_CONST_H */
-- 
2.25.0