diff mbox series

[03/19] linux/limits.h: Extract common header for vDSO

Message ID 20200213161614.23246-4-vincenzo.frascino@arm.com (mailing list archive)
State New, archived
Headers show
Series Introduce common headers | expand

Commit Message

Vincenzo Frascino Feb. 13, 2020, 4:15 p.m. UTC 
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 limits.h into linux and common headers to make the latter suitable
for inclusion in the vDSO library.

Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
---
 include/common/limits.h | 18 ++++++++++++++++++
 include/linux/limits.h  | 13 +------------
 2 files changed, 19 insertions(+), 12 deletions(-)
 create mode 100644 include/common/limits.h
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Patch

diff --git a/include/common/limits.h b/include/common/limits.h
new file mode 100644
index 000000000000..587269010add
--- /dev/null
+++ b/include/common/limits.h
@@ -0,0 +1,18 @@ 
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __COMMON_LIMITS_H
+#define __COMMON_LIMITS_H
+
+#define USHRT_MAX	((unsigned short)~0U)
+#define SHRT_MAX	((short)(USHRT_MAX >> 1))
+#define SHRT_MIN	((short)(-SHRT_MAX - 1))
+#define INT_MAX		((int)(~0U >> 1))
+#define INT_MIN		(-INT_MAX - 1)
+#define UINT_MAX	(~0U)
+#define LONG_MAX	((long)(~0UL >> 1))
+#define LONG_MIN	(-LONG_MAX - 1)
+#define ULONG_MAX	(~0UL)
+#define LLONG_MAX	((long long)(~0ULL >> 1))
+#define LLONG_MIN	(-LLONG_MAX - 1)
+#define ULLONG_MAX	(~0ULL)
+
+#endif /* __COMMON_LIMITS_H */
diff --git a/include/linux/limits.h b/include/linux/limits.h
index 76afcd24ff8c..ac20d2b2edd9 100644
--- a/include/linux/limits.h
+++ b/include/linux/limits.h
@@ -4,19 +4,8 @@ 
 
 #include <uapi/linux/limits.h>
 #include <linux/types.h>
+#include <common/limits.h>
 
-#define USHRT_MAX	((unsigned short)~0U)
-#define SHRT_MAX	((short)(USHRT_MAX >> 1))
-#define SHRT_MIN	((short)(-SHRT_MAX - 1))
-#define INT_MAX		((int)(~0U >> 1))
-#define INT_MIN		(-INT_MAX - 1)
-#define UINT_MAX	(~0U)
-#define LONG_MAX	((long)(~0UL >> 1))
-#define LONG_MIN	(-LONG_MAX - 1)
-#define ULONG_MAX	(~0UL)
-#define LLONG_MAX	((long long)(~0ULL >> 1))
-#define LLONG_MIN	(-LLONG_MAX - 1)
-#define ULLONG_MAX	(~0ULL)
 #define SIZE_MAX	(~(size_t)0)
 #define PHYS_ADDR_MAX	(~(phys_addr_t)0)