Merge tag 'for-linus-20190104' of git://git.kernel.dk/linux-block

Pull block updates and fixes from Jens Axboe:

 - Pulled in MD changes that Shaohua had queued up for 4.21.

   Unfortunately we lost Shaohua late 2018, I'm sending these in on his
   behalf.

 - In conjunction with the above, I added a CREDITS entry for Shaoua.

 - sunvdc queue restart fix (Ming)

* tag 'for-linus-20190104' of git://git.kernel.dk/linux-block:
  Add CREDITS entry for Shaohua Li
  block: sunvdc: don't run hw queue synchronously from irq context
  md: fix raid10 hang issue caused by barrier
  raid10: refactor common wait code from regular read/write request
  md: remvoe redundant condition check
  lib/raid6: add option to skip algo benchmarking
  lib/raid6: sort algos in rough performance order
  lib/raid6: check for assembler SSSE3 support
  lib/raid6: avoid __attribute_const__ redefinition
  lib/raid6: add missing include for raid6test
  md: remove set but not used variable 'bi_rdev'

1 files changed, 43 insertions, 38 deletions

diff --git a/lib/raid6/algos.c b/lib/raid6/algos.c
index 5065b1e7e327..7e4f7a8ffa8e 100644
--- a/lib/raid6/algos.c
+++ b/lib/raid6/algos.c
@@ -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
-#endif
-#if defined(__x86_64__) && !defined(__arch_um__)
-	&raid6_sse2x1,
-	&raid6_sse2x2,
-	&raid6_sse2x4,
 #ifdef CONFIG_AS_AVX2
-	&raid6_avx2x1,
 	&raid6_avx2x2,
-	&raid6_avx2x4,
+	&raid6_avx2x1,
+#endif
+	&raid6_sse2x2,
+	&raid6_sse2x1,
+	&raid6_sse1x2,
+	&raid6_sse1x1,
+	&raid6_mmxx2,
+	&raid6_mmxx1,
 #endif
+#if defined(__x86_64__) && !defined(__arch_um__)
 #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
 };
 
@@ -163,6 +163,11 @@ static inline const struct raid6_calls *raid6_choose_gen(
 			if ((*algo)->valid && !(*algo)->valid())
 				continue;
 
+			if (!IS_ENABLED(CONFIG_RAID6_PQ_BENCHMARK)) {
+				best = *algo;
+				break;
+			}
+
 			perf = 0;
 
 			preempt_disable();