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authorJussi Kivilinna <jussi.kivilinna@iki.fi>2013-06-02 19:51:52 +0300
committerHerbert Xu <herbert@gondor.apana.org.au>2013-06-05 16:33:23 +0800
commitedb7c7cdba90c3fb2339e51c15d21982bdf72fdc (patch)
treef260b953d382dbc9e2dd193f4e13a1f7b1c6810b /crypto
parent3ef91f21a66826cf1003bb7b3c51ac2de4c28182 (diff)
downloadvexpress-lsk-edb7c7cdba90c3fb2339e51c15d21982bdf72fdc.tar.gz
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>
Diffstat (limited to 'crypto')
-rw-r--r--crypto/Kconfig1
1 files changed, 1 insertions, 0 deletions
diff --git a/crypto/Kconfig b/crypto/Kconfig
index 27720af741b..bf8148e74e7 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -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