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lib/raid6: sort algos in rough performance order 

Sort the list of RAID6 algorithms in roughly decreasing order of
expected performance: newer instruction sets first (within each
architecture) and wider unrollings first.

This doesn't make any difference right now, since all functions are
benchmarked; a follow-up change will make use of this by optionally
choosing the first valid function rather than testing all of them.

The Itanium raid6_intx{16,32} entries are also moved down to be near the
other raid6_intx entries for clarity.

Signed-off-by: Daniel Verkamp <dverkamp@chromium.org>
Signed-off-by: Shaohua Li <shli@fb.com>
This commit is contained in:
Daniel Verkamp 2018-11-12 15:26:51 -08:00 committed by Shaohua Li
parent 86919f9dd2
commit 0437de4fa0
1 changed files with 39 additions and 39 deletions
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78
lib/raid6/algos.c
View File

@ -34,64 +34,64 @@ struct raid6_calls raid6_call;
EXPORT_SYMBOL_GPL(raid6_call);
const struct raid6_calls * const raid6_algos[] = {
#if defined(__ia64__)
&raid6_intx16,
&raid6_intx32,
#endif
#if defined(__i386__) && !defined(__arch_um__)
&raid6_mmxx1,
&raid6_mmxx2,
&raid6_sse1x1,
&raid6_sse1x2,
&raid6_sse2x1,
&raid6_sse2x2,
#ifdef CONFIG_AS_AVX2
&raid6_avx2x1,
&raid6_avx2x2,
#endif
#ifdef CONFIG_AS_AVX512
&raid6_avx512x1,
&raid6_avx512x2,
&raid6_avx512x1,
#endif
#ifdef CONFIG_AS_AVX2
&raid6_avx2x2,
&raid6_avx2x1,
#endif
&raid6_sse2x2,
&raid6_sse2x1,
&raid6_sse1x2,
&raid6_sse1x1,
&raid6_mmxx2,
&raid6_mmxx1,
#endif
#if defined(__x86_64__) && !defined(__arch_um__)
&raid6_sse2x1,
&raid6_sse2x2,
&raid6_sse2x4,
#ifdef CONFIG_AS_AVX2
&raid6_avx2x1,
&raid6_avx2x2,
&raid6_avx2x4,
#endif
#ifdef CONFIG_AS_AVX512
&raid6_avx512x1,
&raid6_avx512x2,
&raid6_avx512x4,
&raid6_avx512x2,
&raid6_avx512x1,
#endif
#ifdef CONFIG_AS_AVX2
&raid6_avx2x4,
&raid6_avx2x2,
&raid6_avx2x1,
#endif
&raid6_sse2x4,
&raid6_sse2x2,
&raid6_sse2x1,
#endif
#ifdef CONFIG_ALTIVEC
&raid6_altivec1,
&raid6_altivec2,
&raid6_altivec4,
&raid6_altivec8,
&raid6_vpermxor1,
&raid6_vpermxor2,
&raid6_vpermxor4,
&raid6_vpermxor8,
&raid6_vpermxor4,
&raid6_vpermxor2,
&raid6_vpermxor1,
&raid6_altivec8,
&raid6_altivec4,
&raid6_altivec2,
&raid6_altivec1,
#endif
#if defined(CONFIG_S390)
&raid6_s390vx8,
#endif
&raid6_intx1,
&raid6_intx2,
&raid6_intx4,
&raid6_intx8,
#ifdef CONFIG_KERNEL_MODE_NEON
&raid6_neonx1,
&raid6_neonx2,
&raid6_neonx4,
&raid6_neonx8,
&raid6_neonx4,
&raid6_neonx2,
&raid6_neonx1,
#endif
#if defined(__ia64__)
&raid6_intx32,
&raid6_intx16,
#endif
&raid6_intx8,
&raid6_intx4,
&raid6_intx2,
&raid6_intx1,
NULL
};