genfio: Splitting gen_template in 2 parts

[fio.git] / hash.h

diff --git a/hash.h b/hash.h
index 93dd8318ffa11dcb4324ab5ec7622880506916fd..02b06140146b469abd05772406102fec845747fc 100644 (file)
--- a/hash.h
+++ b/hash.h
@@ -28,6 +28,8 @@
 #error Define GOLDEN_RATIO_PRIME for your wordsize.
 #endif
 
+#define GR_PRIME_64    0x9e37fffffffc0001ULL
+
 static inline unsigned long __hash_long(unsigned long val)
 {
        unsigned long hash = val;
@@ -60,6 +62,11 @@ static inline unsigned long hash_long(unsigned long val, unsigned int bits)
        /* High bits are more random, so use them. */
        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)
 {