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bitops: collect BIT macros to include/linux/bitops.h

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Same macros are defined in various places.  Collect them into
include/linux/bitops.h like Linux.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
This commit is contained in:
Masahiro Yamada 2017-11-22 02:38:11 +09:00
parent ab5502bf56
commit ed3986ca30
6 changed files with 11 additions and 11 deletions
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7
include/linux/bitops.h
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@ -5,9 +5,16 @@
#include <asm-generic/bitsperlong.h>
#include <linux/compiler.h>
#ifdef __KERNEL__
#define BIT(nr) (1UL << (nr))
#define BIT_ULL(nr) (1ULL << (nr))
#define BIT_MASK(nr) (1UL << ((nr) % BITS_PER_LONG))
#define BIT_WORD(nr) ((nr) / BITS_PER_LONG)
#define BIT_ULL_MASK(nr) (1ULL << ((nr) % BITS_PER_LONG_LONG))
#define BIT_ULL_WORD(nr) ((nr) / BITS_PER_LONG_LONG)
#define BITS_PER_BYTE 8
#define BITS_TO_LONGS(nr) DIV_ROUND_UP(nr, BITS_PER_BYTE * sizeof(long))
#endif
/*
* Create a contiguous bitmask starting at bit position @l and ending at