On Thursday, March 20, 2014 at 11:14:00 PM, chandramouli narayanan wrote: > This git patch adds x86_64 AVX2 optimization of SHA1 > transform to crypto support. The patch has been tested with 3.14.0-rc1 > kernel. > > 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. > > This patch adds sha1_avx2_transform(), the glue, build and > configuration changes needed for AVX2 optimization of > SHA1 transform to crypto support. > > sha1-ssse3 is one module which adds the necessary optimization > support (SSSE3/AVX/AVX2) for the low-level SHA1 transform function. > With better optimization support, transform function is overridden > as the case may be. In the case of AVX2, due to performance reasons > across datablock sizes, the AVX or AVX2 transform function is used > at run-time as it suits best. The Makefile change therefore appends > the necessary objects to the linkage. Due to this, the patch merely > appends AVX2 transform to the existing build mix and Kconfig support > and leaves the configuration build support as is. > > Signed-off-by: Chandramouli Narayanan <mouli@xxxxxxxxxxxxxxx> Very nice, good job. Thank you! Reviewed-by: Marek Vasut <marex@xxxxxxx> 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
