On Wednesday, March 12, 2014 at 07:47:50 PM, chandramouli narayanan wrote: > This git patch adds the glue, build and configuration changes > to include x86_64 AVX2 optimization of SHA1 transform to > crypto support. The patch has been tested with 3.14.0-rc1 > kernel. > > Changes from the initial version of this patch are in > a) check for BMI2 in addition to AVX2 support since > __sha1_transform_avx2() uses rorx > b) Since the module build has dependency on 64bit, it is > redundant to check it in the code here. > > On a Haswell desktop, with turbo disabled and all cpus running > at maximum frequency, tcrypt shows AVX2 performance improvement > from 3% for 256 bytes update to 16% for 1024 bytes update over > AVX implementation. > > Signed-off-by: Chandramouli Narayanan <mouli@xxxxxxxxxxxxxxx> > > diff --git a/arch/x86/crypto/Makefile b/arch/x86/crypto/Makefile > index 6ba54d6..61d6e28 100644 > --- a/arch/x86/crypto/Makefile > +++ b/arch/x86/crypto/Makefile > @@ -79,6 +79,9 @@ aesni-intel-y := aesni-intel_asm.o aesni-intel_glue.o > fpu.o aesni-intel-$(CONFIG_64BIT) += aesni-intel_avx-x86_64.o > ghash-clmulni-intel-y := ghash-clmulni-intel_asm.o > ghash-clmulni-intel_glue.o sha1-ssse3-y := sha1_ssse3_asm.o > sha1_ssse3_glue.o > +ifeq ($(avx2_supported),yes) > +sha1-ssse3-y += sha1_avx2_x86_64_asm.o Use: sha1-ssse3-$(CONFIG_AS_AVX2) += sha1_avx2_x86_64_asm.o And you will not need the CONFIG_AS_AVX2 ifdef in your previous patch, no ? [...] Best regards, Marek Vasut -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
