diff options
| author | Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> | 2013-10-11 19:54:59 -0400 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-10-16 18:36:07 -0400 |
| commit | bfd1ff6375c82930bfb3b401eee2c96720fa8e84 (patch) | |
| tree | e5016ca784cdefd6fbd68431eb9d23838157965e | |
| parent | 1a6b991a9875a4c4811c7baf4058fa17aa1a9d9b (diff) | |
bitops: Introduce BIT_ULL
Adding BIT(x) equivalent for unsigned long long type, BIT_ULL(x). Also
added BIT_ULL_MASK and BIT_ULL_WORD.
Suggested-by: Joe Perches <joe@perches.com>
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| -rw-r--r-- | include/linux/bitops.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/bitops.h b/include/linux/bitops.h index a3b6b82108b9..5a1c8b71ccd8 100644 --- a/include/linux/bitops.h +++ b/include/linux/bitops.h | |||
| @@ -4,8 +4,11 @@ | |||
| 4 | 4 | ||
| 5 | #ifdef __KERNEL__ | 5 | #ifdef __KERNEL__ |
| 6 | #define BIT(nr) (1UL << (nr)) | 6 | #define BIT(nr) (1UL << (nr)) |
| 7 | #define BIT_ULL(nr) (1ULL << (nr)) | ||
| 7 | #define BIT_MASK(nr) (1UL << ((nr) % BITS_PER_LONG)) | 8 | #define BIT_MASK(nr) (1UL << ((nr) % BITS_PER_LONG)) |
| 8 | #define BIT_WORD(nr) ((nr) / BITS_PER_LONG) | 9 | #define BIT_WORD(nr) ((nr) / BITS_PER_LONG) |
| 10 | #define BIT_ULL_MASK(nr) (1ULL << ((nr) % BITS_PER_LONG_LONG)) | ||
| 11 | #define BIT_ULL_WORD(nr) ((nr) / BITS_PER_LONG_LONG) | ||
| 9 | #define BITS_PER_BYTE 8 | 12 | #define BITS_PER_BYTE 8 |
| 10 | #define BITS_TO_LONGS(nr) DIV_ROUND_UP(nr, BITS_PER_BYTE * sizeof(long)) | 13 | #define BITS_TO_LONGS(nr) DIV_ROUND_UP(nr, BITS_PER_BYTE * sizeof(long)) |
| 11 | #endif | 14 | #endif |