1 files changed, 0 insertions, 81 deletions
diff --git a/src/include/linux/hash.h b/src/include/linux/hash.h
deleted file mode 100644
index f09a0ae..0000000
--- a/src/include/linux/hash.h
+++ /dev/null
@@ -1,81 +0,0 @@
-#ifndef _LINUX_HASH_H
-#define _LINUX_HASH_H
-/* Fast hashing routine for ints,  longs and pointers.
-   (C) 2002 Nadia Yvette Chambers, IBM */
-
-/*
- * Knuth recommends primes in approximately golden ratio to the maximum
- * integer representable by a machine word for multiplicative hashing.
- * Chuck Lever verified the effectiveness of this technique:
- * http://www.citi.umich.edu/techreports/reports/citi-tr-00-1.pdf
- *
- * These primes are chosen to be bit-sparse, that is operations on
- * them can use shifts and additions instead of multiplications for
- * machines where multiplications are slow.
- */
-
-#include <asm/types.h>
-#include <linux/compiler.h>
-
-/* 2^31 + 2^29 - 2^25 + 2^22 - 2^19 - 2^16 + 1 */
-#define GOLDEN_RATIO_PRIME_32 0x9e370001UL
-/*  2^63 + 2^61 - 2^57 + 2^54 - 2^51 - 2^18 + 1 */
-#define GOLDEN_RATIO_PRIME_64 0x9e37fffffffc0001UL
-
-#if BITS_PER_LONG == 32
-#define GOLDEN_RATIO_PRIME GOLDEN_RATIO_PRIME_32
-#define hash_long(val, bits) hash_32(val, bits)
-#elif BITS_PER_LONG == 64
-#define hash_long(val, bits) hash_64(val, bits)
-#define GOLDEN_RATIO_PRIME GOLDEN_RATIO_PRIME_64
-#else
-#error Wordsize not 32 or 64
-#endif
-
-static __always_inline u64 hash_64(u64 val, unsigned int bits)
-{
-	u64 hash = val;
-
-	/*  Sigh, gcc can't optimise this alone like it does for 32 bits. */
-	u64 n = hash;
-	n <<= 18;
-	hash -= n;
-	n <<= 33;
-	hash -= n;
-	n <<= 3;
-	hash += n;
-	n <<= 3;
-	hash -= n;
-	n <<= 4;
-	hash += n;
-	n <<= 2;
-	hash += n;
-
-	/* High bits are more random, so use them. */
-	return hash >> (64 - bits);
-}
-
-static inline u32 hash_32(u32 val, unsigned int bits)
-{
-	/* On some cpus multiply is faster, on others gcc will do shifts */
-	u32 hash = val * GOLDEN_RATIO_PRIME_32;
-
-	/* High bits are more random, so use them. */
-	return hash >> (32 - bits);
-}
-
-static inline unsigned long hash_ptr(const void *ptr, unsigned int bits)
-{
-	return hash_long((unsigned long)ptr, bits);
-}
-
-static inline u32 hash32_ptr(const void *ptr)
-{
-	unsigned long val = (unsigned long)ptr;
-
-#if BITS_PER_LONG == 64
-	val ^= (val >> 32);
-#endif
-	return (u32)val;
-}
-#endif /* _LINUX_HASH_H */