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authorDenys Vlasenko <vda.linux@googlemail.com>2007-10-26 16:22:57 +0800
committerHerbert Xu <herbert@gondor.apana.org.au>2008-01-11 08:16:06 +1100
commite2b21b5002a2bf21ca73c7448309a7288a984ddf (patch)
tree11e55173debdb2428a37655968ceef39786f2383 /crypto/camellia.c
parentb7a30da61adc5f252ee97b2a4f3fc23c9d06a08a (diff)
[CRYPTO] twofish: Do not unroll big stuff in twofish key setup
Currently twofish cipher key setup code has unrolled loops - approximately 70-100 instructions are repeated 40 times. As a result, twofish module is the biggest module in crypto/*. Unrolling produces x2.5 more code (+18k on i386), and speeds up key setup by 7%: unrolled: twofish_setkey/sec: 41128 loop: twofish_setkey/sec: 38148 CALC_K256: ~100 insns each CALC_K192: ~90 insns CALC_K: ~70 insns Attached patch removes this unrolling. $ size */twofish_common.o text data bss dec hex filename 37920 0 0 37920 9420 crypto.org/twofish_common.o 13209 0 0 13209 3399 crypto/twofish_common.o Run tested (modprobe tcrypt reports ok). Please apply. Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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