diff options
| author | Ingo Molnar <mingo@kernel.org> | 2016-10-16 13:04:34 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-10-16 13:04:34 +0200 |
| commit | 4d69f155d58d0f75c5404ea502178b1943a04755 (patch) | |
| tree | fe5b7608f05f6951fce748ea1e93d942b52902bd /include/linux/bitops.h | |
| parent | c474e50711aa79b7bd0ea30b44744baca5650375 (diff) | |
| parent | 1001354ca34179f3db924eb66672442a173147dc (diff) | |
Merge tag 'v4.9-rc1' into x86/fpu, to resolve conflict
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/linux/bitops.h')
| -rw-r--r-- | include/linux/bitops.h | 36 |
1 files changed, 26 insertions, 10 deletions
diff --git a/include/linux/bitops.h b/include/linux/bitops.h index 299e76b59fe9..a83c822c35c2 100644 --- a/include/linux/bitops.h +++ b/include/linux/bitops.h @@ -65,16 +65,6 @@ static inline int get_bitmask_order(unsigned int count) return order; /* We could be slightly more clever with -1 here... */ } -static inline int get_count_order(unsigned int count) -{ - int order; - - order = fls(count) - 1; - if (count & (count - 1)) - order++; - return order; -} - static __always_inline unsigned long hweight_long(unsigned long w) { return sizeof(w) == 4 ? hweight32(w) : hweight64(w); @@ -191,6 +181,32 @@ static inline unsigned fls_long(unsigned long l) return fls64(l); } +static inline int get_count_order(unsigned int count) +{ + int order; + + order = fls(count) - 1; + if (count & (count - 1)) + order++; + return order; +} + +/** + * get_count_order_long - get order after rounding @l up to power of 2 + * @l: parameter + * + * it is same as get_count_order() but with long type parameter + */ +static inline int get_count_order_long(unsigned long l) +{ + if (l == 0UL) + return -1; + else if (l & (l - 1UL)) + return (int)fls_long(l); + else + return (int)fls_long(l) - 1; +} + /** * __ffs64 - find first set bit in a 64 bit word * @word: The 64 bit word |
