From 7056741fd9fc14a65608549a4657cf5178f05f63 Mon Sep 17 00:00:00 2001 From: Jim Kukunas Date: Thu, 8 Nov 2012 13:47:44 -0800 Subject: lib/raid6: Add AVX2 optimized recovery functions Optimize RAID6 recovery functions to take advantage of the 256-bit YMM integer instructions introduced in AVX2. The patch was tested and benchmarked before submission. However hardware is not yet released so benchmark numbers cannot be reported. Acked-by: "H. Peter Anvin" Signed-off-by: Jim Kukunas Signed-off-by: NeilBrown --- lib/raid6/algos.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'lib/raid6/algos.c') diff --git a/lib/raid6/algos.c b/lib/raid6/algos.c index 589f5f50ad2e..8b7f55cadb45 100644 --- a/lib/raid6/algos.c +++ b/lib/raid6/algos.c @@ -72,6 +72,9 @@ EXPORT_SYMBOL_GPL(raid6_datap_recov); const struct raid6_recov_calls *const raid6_recov_algos[] = { #if (defined(__i386__) || defined(__x86_64__)) && !defined(__arch_um__) +#ifdef CONFIG_AS_AVX2 + &raid6_recov_avx2, +#endif &raid6_recov_ssse3, #endif &raid6_recov_intx1, -- cgit v1.2.3 From 2c935842bdb46f5f557426feb4d2bdfdad1aa5f9 Mon Sep 17 00:00:00 2001 From: Yuanhan Liu Date: Fri, 30 Nov 2012 13:10:39 -0800 Subject: lib/raid6: Add AVX2 optimized gen_syndrome functions Add AVX2 optimized gen_syndrom functions, which is simply based on sse2.c written by hpa. Signed-off-by: Yuanhan Liu Reviewed-by: H. Peter Anvin Signed-off-by: Jim Kukunas Signed-off-by: NeilBrown --- lib/raid6/algos.c | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'lib/raid6/algos.c') diff --git a/lib/raid6/algos.c b/lib/raid6/algos.c index 8b7f55cadb45..6d7316fe9f30 100644 --- a/lib/raid6/algos.c +++ b/lib/raid6/algos.c @@ -45,11 +45,20 @@ const struct raid6_calls * const raid6_algos[] = { &raid6_sse1x2, &raid6_sse2x1, &raid6_sse2x2, +#ifdef CONFIG_AS_AVX2 + &raid6_avx2x1, + &raid6_avx2x2, +#endif #endif #if defined(__x86_64__) && !defined(__arch_um__) &raid6_sse2x1, &raid6_sse2x2, &raid6_sse2x4, +#ifdef CONFIG_AS_AVX2 + &raid6_avx2x1, + &raid6_avx2x2, + &raid6_avx2x4, +#endif #endif #ifdef CONFIG_ALTIVEC &raid6_altivec1, -- cgit v1.2.3