diff options
| author | Gayatri Kammela <gayatri.kammela@intel.com> | 2016-08-12 18:03:19 -0700 |
|---|---|---|
| committer | Shaohua Li <shli@fb.com> | 2016-09-21 09:09:44 -0700 |
| commit | e0a491c1296874a1aca51cc68452f12a4d950029 (patch) | |
| tree | d69949fe4db93fc1cc886fa359b8a7c58f4f3021 /lib/raid6/x86.h | |
| parent | d6385db94196b253ae5eb3678fa95cdf1f839fcc (diff) | |
| download | linux-e0a491c1296874a1aca51cc68452f12a4d950029.tar.bz2 | |
lib/raid6: Add AVX512 optimized gen_syndrome functions
Optimize RAID6 gen_syndrom functions to take advantage of
the 512-bit ZMM integer instructions introduced in AVX512.
AVX512 optimized gen_syndrom functions, which is simply based
on avx2.c written by Yuanhan Liu and sse2.c written by hpa.
The patch was tested and benchmarked before submission on
a hardware that has AVX512 flags to support such instructions
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jim Kukunas <james.t.kukunas@linux.intel.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>
Diffstat (limited to 'lib/raid6/x86.h')
| -rw-r--r-- | lib/raid6/x86.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/lib/raid6/x86.h b/lib/raid6/x86.h index 8fe9d9662abb..834d268a4b05 100644 --- a/lib/raid6/x86.h +++ b/lib/raid6/x86.h @@ -46,6 +46,16 @@ static inline void kernel_fpu_end(void) #define X86_FEATURE_SSSE3 (4*32+ 9) /* Supplemental SSE-3 */ #define X86_FEATURE_AVX (4*32+28) /* Advanced Vector Extensions */ #define X86_FEATURE_AVX2 (9*32+ 5) /* AVX2 instructions */ +#define X86_FEATURE_AVX512F (9*32+16) /* AVX-512 Foundation */ +#define X86_FEATURE_AVX512DQ (9*32+17) /* AVX-512 DQ (Double/Quad granular) + * Instructions + */ +#define X86_FEATURE_AVX512BW (9*32+30) /* AVX-512 BW (Byte/Word granular) + * Instructions + */ +#define X86_FEATURE_AVX512VL (9*32+31) /* AVX-512 VL (128/256 Vector Length) + * Extensions + */ #define X86_FEATURE_MMXEXT (1*32+22) /* AMD MMX extensions */ /* Should work well enough on modern CPUs for testing */ |