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crypto: blowfish - disable AVX2 implementation 

It appears that the performance of 'vpgatherdd' is suboptimal for this kind of
workload (tested on Core i5-4570) and causes blowfish-avx2 to be significantly
slower than blowfish-amd64. So disable the AVX2 implementation to avoid
performance regressions.

Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
hifive-unleashed-5.1
Jussi Kivilinna 2013-06-02 19:51:52 +03:00 committed by Herbert Xu
parent 3ef91f21a6
commit edb7c7cdba
1 changed files with 1 additions and 0 deletions
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crypto/Kconfig
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@ -823,6 +823,7 @@ config CRYPTO_BLOWFISH_X86_64
config CRYPTO_BLOWFISH_AVX2_X86_64
tristate "Blowfish cipher algorithm (x86_64/AVX2)"
depends on X86 && 64BIT
depends on BROKEN
select CRYPTO_ALGAPI
select CRYPTO_CRYPTD
select CRYPTO_ABLK_HELPER_X86