"hash_bytes128" has two versions for 64 bits and 32 bits system. This should be common optimization for their respective platforms. But 64 bits version was only enabled in x86-64. This patch enable it for aarch64 platform. Micro benchmarking test was run in two kinds of arm platform. It was observed that 50% performance improvement in thunderX2 and 40% improvement in TaiShan(Cortex-A72).
Signed-off-by: Yanqin Wei <[email protected]> --- lib/hash.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/lib/hash.c b/lib/hash.c index c64f25e..06f8339 100644 --- a/lib/hash.c +++ b/lib/hash.c @@ -72,7 +72,7 @@ hash_words64__(const uint64_t p[], size_t n_words, uint32_t basis) return hash_words64_inline(p, n_words, basis); } -#if !(defined(__x86_64__)) +#if !(defined(__x86_64__)) && !(defined(__aarch64__)) void hash_bytes128(const void *p_, size_t len, uint32_t basis, ovs_u128 *out) { @@ -233,7 +233,7 @@ hash_bytes128(const void *p_, size_t len, uint32_t basis, ovs_u128 *out) out->u32[3] = h4; } -#else /* __x86_64__ */ +#else /* __x86_64__ or __aarch64__*/ static inline uint64_t hash_rot64(uint64_t x, int8_t r) @@ -361,4 +361,4 @@ hash_bytes128(const void *p_, size_t len, uint32_t basis, ovs_u128 *out) out->u64.lo = h1; out->u64.hi = h2; } -#endif /* __x86_64__ */ +#endif /* __x86_64__ or __aarch64__*/ -- 2.7.4 IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you. _______________________________________________ dev mailing list [email protected] https://mail.openvswitch.org/mailman/listinfo/ovs-dev
