X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=hash.h;h=02b06140146b469abd05772406102fec845747fc;hp=0c3cdda77be642842337f6fe949da7c24581e661;hb=3cdb8cf38198d5cea73074d427ae310320e1d65f;hpb=fddc6604f91ebf76d9090741f9d4f5a4d33be0c6 diff --git a/hash.h b/hash.h index 0c3cdda7..02b06140 100644 --- a/hash.h +++ b/hash.h @@ -28,7 +28,9 @@ #error Define GOLDEN_RATIO_PRIME for your wordsize. #endif -static inline unsigned long hash_long(unsigned long val, unsigned int bits) +#define GR_PRIME_64 0x9e37fffffffc0001ULL + +static inline unsigned long __hash_long(unsigned long val) { unsigned long hash = val; @@ -52,13 +54,23 @@ static inline unsigned long hash_long(unsigned long val, unsigned int bits) hash *= GOLDEN_RATIO_PRIME; #endif + return hash; +} + +static inline unsigned long hash_long(unsigned long val, unsigned int bits) +{ /* High bits are more random, so use them. */ - return hash >> (BITS_PER_LONG - bits); + return __hash_long(val) >> (BITS_PER_LONG - bits); +} + +static inline uint64_t __hash_u64(uint64_t val) +{ + return val * GR_PRIME_64; } static inline unsigned long hash_ptr(void *ptr, unsigned int bits) { - return hash_long((unsigned long)ptr, bits); + return hash_long((uintptr_t)ptr, bits); } /*