From 13c520b2993c9faae6770264d33ff1e1ea4c2ceb Mon Sep 17 00:00:00 2001
From: Gayatri Kammela <gayatri.kammela@intel.com>
Date: Fri, 12 Aug 2016 18:03:20 -0700
Subject: lib/raid6: Add AVX512 optimized recovery functions

Optimize RAID6 recovery functions to take advantage of
the 512-bit ZMM integer instructions introduced in AVX512.

AVX512 optimized recovery functions, which is simply based
on recov_avx2.c written by Jim Kukunas

This patch was tested and benchmarked before submission on
a hardware that has AVX512 flags to support such instructions

Cc: Jim Kukunas <james.t.kukunas@linux.intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Megha Dey <megha.dey@linux.intel.com>
Signed-off-by: Gayatri Kammela <gayatri.kammela@intel.com>
Reviewed-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Shaohua Li <shli@fb.com>
---
 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 f5f090c52dd9..149d947a4fec 100644
--- a/lib/raid6/algos.c
+++ b/lib/raid6/algos.c
@@ -98,6 +98,9 @@ void (*raid6_datap_recov)(int, size_t, int, void **);
 EXPORT_SYMBOL_GPL(raid6_datap_recov);
 
 const struct raid6_recov_calls *const raid6_recov_algos[] = {
+#ifdef CONFIG_AS_AVX512
+	&raid6_recov_avx512,
+#endif
 #ifdef CONFIG_AS_AVX2
 	&raid6_recov_avx2,
 #endif
-- 
cgit