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Add parity generation/rebuild using AVX-512 for x86-64

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avx512f should work on all AVX512 hardware, since it only uses
Foundation instructions.

avx512bw should be faster on hardware supporting the AVW512BW
extension. We can use full-width pshufb (instead of relying on the 256
bits AVX2 pshufb). As a side-effect, the code is also unrolled more.

Reviewed-by: Richard Laager <rlaager@wiktel.com>
Reviewed-by: Gvozden Neskovic <neskovic@gmail.com>
Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Romain Dolbeau <romain.github@dolbeau.name>
Closes #5219
This commit is contained in:
Romain Dolbeau
2016-11-02 20:40:23 +01:00
committed by Brian Behlendorf
parent 6d4210052b
commit 7f547f85fe
8 changed files with 971 additions and 0 deletions
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include/sys/vdev_raidz_impl.h
+6
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@@ -141,6 +141,12 @@ extern const raidz_impl_ops_t vdev_raidz_ssse3_impl;
#if defined(__x86_64) && defined(HAVE_AVX2) /* only x86_64 for now */
extern const raidz_impl_ops_t vdev_raidz_avx2_impl;
#endif
#if defined(__x86_64) && defined(HAVE_AVX512F) /* only x86_64 for now */
extern const raidz_impl_ops_t vdev_raidz_avx512f_impl;
#endif
#if defined(__x86_64) && defined(HAVE_AVX512BW) /* only x86_64 for now */
extern const raidz_impl_ops_t vdev_raidz_avx512bw_impl;
#endif
#if defined(__aarch64__)
extern const raidz_impl_ops_t vdev_raidz_aarch64_neon_impl;
extern const raidz_impl_ops_t vdev_raidz_aarch64_neonx2_impl;