summaryrefslogtreecommitdiff
path: root/include/linux/kernel.h
diff options
context:
space:
mode:
authorMasahiro Yamada <yamada.masahiro@socionext.com>2019-03-07 16:27:14 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2019-03-07 18:31:59 -0800
commit54d50897d544c874562253e2a8f70dfcad22afe8 (patch)
treedbdfb1f5ca6b8784cce49139fe235c821265028e /include/linux/kernel.h
parent2dc0e68d5ada6d29554c760bee498c2612530d12 (diff)
linux/kernel.h: split *_MAX and *_MIN macros into <linux/limits.h>
<linux/kernel.h> tends to be cluttered because we often put various sort of unrelated stuff in it. So, we have split out a sensible chunk of code into a separate header from time to time. This commit splits out the *_MAX and *_MIN defines. The standard header <limits.h> contains various MAX, MIN constants including numerial limits. [1] I think it makes sense to move in-kernel MAX, MIN constants into include/linux/limits.h. We already have include/uapi/linux/limits.h to contain some user-space constants. I changed its include guard to _UAPI_LINUX_LIMITS_H. This change has no impact to the user-space because scripts/headers_install.sh rips off the '_UAPI' prefix from the include guards of exported headers. [1] http://pubs.opengroup.org/onlinepubs/009604499/basedefs/limits.h.html Link: http://lkml.kernel.org/r/1549156242-20806-2-git-send-email-yamada.masahiro@socionext.com Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Cc: Alex Elder <elder@linaro.org> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: Zhang Yanmin <yanmin.zhang@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/kernel.h')
-rw-r--r--include/linux/kernel.h29
1 files changed, 1 insertions, 28 deletions
diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index a9ff66977e10..34a5036debd3 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -4,6 +4,7 @@
#include <stdarg.h>
+#include <linux/limits.h>
#include <linux/linkage.h>
#include <linux/stddef.h>
#include <linux/types.h>
@@ -17,34 +18,6 @@
#include <asm/div64.h>
#include <uapi/linux/kernel.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)
-
-#define U8_MAX ((u8)~0U)
-#define S8_MAX ((s8)(U8_MAX>>1))
-#define S8_MIN ((s8)(-S8_MAX - 1))
-#define U16_MAX ((u16)~0U)
-#define S16_MAX ((s16)(U16_MAX>>1))
-#define S16_MIN ((s16)(-S16_MAX - 1))
-#define U32_MAX ((u32)~0U)
-#define S32_MAX ((s32)(U32_MAX>>1))
-#define S32_MIN ((s32)(-S32_MAX - 1))
-#define U64_MAX ((u64)~0ULL)
-#define S64_MAX ((s64)(U64_MAX>>1))
-#define S64_MIN ((s64)(-S64_MAX - 1))
-
#define STACK_MAGIC 0xdeadbeef
/**