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RAID/s390: provide raid6 recovery optimization

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The XC instruction can be used to improve the speed of the raid6
recovery. The loops now operate on blocks of 256 bytes.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Martin Schwidefsky
2016-08-31 09:27:35 +02:00
parent 7bac4f5b8e
commit f5b55fa1f8
4 changed files with 121 additions and 1 deletions
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include/linux/raid/pq.h
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@@ -116,6 +116,7 @@ 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;
extern const struct raid6_recov_calls raid6_recov_s390xc;
extern const struct raid6_calls raid6_neonx1;
extern const struct raid6_calls raid6_neonx2;