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| author | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2013-05-16 19:20:32 +0400 |
|---|---|---|
| committer | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2013-07-09 01:09:18 +0400 |
| commit | 7d11965ddb9b9b1e0a5d13c58345ada1ccbc663b (patch) | |
| tree | 9aec7ff11372f0194f288c13c7c83ff6ef40c87b /lib/raid6/test | |
| parent | 01956597cbc46df072f20f90a40eebe356200c38 (diff) | |
| download | linux-7d11965ddb9b9b1e0a5d13c58345ada1ccbc663b.tar.xz | |
lib/raid6: add ARM-NEON accelerated syndrome calculation
Rebased/reworked a patch contributed by Rob Herring that uses
NEON intrinsics to perform the RAID-6 syndrome calculations.
It uses the existing unroll.awk code to generate several
unrolled versions of which the best performing one is selected
at boot time.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Nicolas Pitre <nico@linaro.org>
Cc: hpa@linux.intel.com
Diffstat (limited to 'lib/raid6/test')
| -rw-r--r-- | lib/raid6/test/Makefile | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/lib/raid6/test/Makefile b/lib/raid6/test/Makefile index 087332dbf8aa..28afa1a06e03 100644 --- a/lib/raid6/test/Makefile +++ b/lib/raid6/test/Makefile @@ -22,11 +22,23 @@ ifeq ($(ARCH),x86_64) IS_X86 = yes endif +ifeq ($(ARCH),arm) + CFLAGS += -I../../../arch/arm/include -mfpu=neon + HAS_NEON = yes +endif +ifeq ($(ARCH),arm64) + CFLAGS += -I../../../arch/arm64/include + HAS_NEON = yes +endif + ifeq ($(IS_X86),yes) OBJS += mmx.o sse1.o sse2.o avx2.o recov_ssse3.o recov_avx2.o CFLAGS += $(shell echo "vpbroadcastb %xmm0, %ymm1" | \ gcc -c -x assembler - >&/dev/null && \ rm ./-.o && echo -DCONFIG_AS_AVX2=1) +else ifeq ($(HAS_NEON),yes) + OBJS += neon.o neon1.o neon2.o neon4.o neon8.o + CFLAGS += -DCONFIG_KERNEL_MODE_NEON=1 else HAS_ALTIVEC := $(shell echo -e '\#include <altivec.h>\nvector int a;' |\ gcc -c -x c - >&/dev/null && \ @@ -55,6 +67,18 @@ raid6.a: $(OBJS) raid6test: test.c raid6.a $(CC) $(CFLAGS) -o raid6test $^ +neon1.c: neon.uc ../unroll.awk + $(AWK) ../unroll.awk -vN=1 < neon.uc > $@ + +neon2.c: neon.uc ../unroll.awk + $(AWK) ../unroll.awk -vN=2 < neon.uc > $@ + +neon4.c: neon.uc ../unroll.awk + $(AWK) ../unroll.awk -vN=4 < neon.uc > $@ + +neon8.c: neon.uc ../unroll.awk + $(AWK) ../unroll.awk -vN=8 < neon.uc > $@ + altivec1.c: altivec.uc ../unroll.awk $(AWK) ../unroll.awk -vN=1 < altivec.uc > $@ @@ -89,7 +113,7 @@ tables.c: mktables ./mktables > tables.c clean: - rm -f *.o *.a mktables mktables.c *.uc int*.c altivec*.c tables.c raid6test + rm -f *.o *.a mktables mktables.c *.uc int*.c altivec*.c neon*.c tables.c raid6test spotless: clean rm -f *~ |