WSL2-Linux-Kernel/include/asm-generic/hash.h

#ifndef __ASM_GENERIC_HASH_H
#define __ASM_GENERIC_HASH_H

struct arch_hash_ops;
static inline void setup_arch_fast_hash(struct arch_hash_ops *ops)
{
}

#endif /* __ASM_GENERIC_HASH_H */
lib: introduce arch optimized hash library We introduce a new hashing library that is meant to be used in the contexts where speed is more important than uniformity of the hashed values. The hash library leverages architecture specific implementation to achieve high performance and fall backs to jhash() for the generic case. On Intel-based x86 architectures, the library can exploit the crc32l instruction, part of the Intel SSE4.2 instruction set, if the instruction is supported by the processor. This implementation is twice as fast as the jhash() implementation on an i7 processor. Additional architectures, such as Arm64 provide instructions for accelerating the computation of CRC, so they could be added as well in follow-up work. Signed-off-by: Francesco Fusco <ffusco@redhat.com> Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Signed-off-by: Thomas Graf <tgraf@redhat.com> Cc: linux-kernel@vger.kernel.org Signed-off-by: David S. Miller <davem@davemloft.net> 2013-12-12 19:09:05 +04:00			`#ifndef __ASM_GENERIC_HASH_H`
			`#define __ASM_GENERIC_HASH_H`

			`struct arch_hash_ops;`
			`static inline void setup_arch_fast_hash(struct arch_hash_ops *ops)`
			`{`
			`}`

			`#endif /* __ASM_GENERIC_HASH_H */`