diff options
Diffstat (limited to 'include/linux/log2.h')
| -rw-r--r-- | include/linux/log2.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/log2.h b/include/linux/log2.h index 389043a93c..d9913f06bd 100644 --- a/include/linux/log2.h +++ b/include/linux/log2.h @@ -54,6 +54,15 @@ bool is_power_of_2(unsigned long n) return (n != 0 && ((n & (n - 1)) == 0)); } +/* + * round up to nearest power of two + */ +static inline __attribute__((const)) +unsigned long __roundup_pow_of_two(unsigned long n) +{ + return 1UL << fls(n - 1); +} + /** * ilog2 - log of base 2 of 32-bit or a 64-bit unsigned value * @n - parameter |