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lib/raid6: Add AVX2 optimized recovery functions

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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" <hpa@zytor.com>
Signed-off-by: Jim Kukunas <james.t.kukunas@linux.intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
Jim Kukunas 2012-11-08 13:47:44 -08:00 • committed by NeilBrown
parent 54f89341e8
commit 7056741fd9
7 changed files with 345 additions and 9 deletions
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1
include/linux/raid/pq.h
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@ -109,6 +109,7 @@ struct raid6_recov_calls {
extern const struct raid6_recov_calls raid6_recov_intx1;
extern const struct raid6_recov_calls raid6_recov_ssse3;
extern const struct raid6_recov_calls raid6_recov_avx2;
/* Algorithm list */
extern const struct raid6_calls * const raid6_algos[];