From: LEROY Christophe Date: Fri, 22 Nov 2013 17:28:29 +0000 (+0100) Subject: powerpc 8xx: defconfig: slice by 4 is more efficient than the default slice by 8... X-Git-Tag: v3.14-rc1~80^2~5^2~32 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=189046981b0bb122cba1d1e559bbd69d0b128cb5;p=pandora-kernel.git powerpc 8xx: defconfig: slice by 4 is more efficient than the default slice by 8 on Powerpc 8xx. On PPC_8xx, CRC32_SLICEBY4 is more efficient (almost twice) than CRC32_SLICEBY8, as shown below: With CRC32_SLICEBY8: [ 1.109204] crc32: CRC_LE_BITS = 64, CRC_BE BITS = 64 [ 1.114401] crc32: self tests passed, processed 225944 bytes in 15118910 nsec [ 1.130655] crc32c: CRC_LE_BITS = 64 [ 1.134235] crc32c: self tests passed, processed 225944 bytes in 4479879 nsec With CRC32_SLICEBY4: [ 1.097129] crc32: CRC_LE_BITS = 32, CRC_BE BITS = 32 [ 1.101878] crc32: self tests passed, processed 225944 bytes in 8616242 nsec [ 1.116298] crc32c: CRC_LE_BITS = 32 [ 1.119607] crc32c: self tests passed, processed 225944 bytes in 3289576 nsec Signed-off-by: Christophe Leroy Signed-off-by: Scott Wood --- Reading git-diff-tree failed