linux/arch/powerpc/configs/mpc866_ads_defconfig
LEROY Christophe 189046981b 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 <christophe.leroy@c-s.fr>
Signed-off-by: Scott Wood <scottwood@freescale.com>
2014-01-07 19:11:20 -06:00

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CONFIG_PPC_8xx=y
CONFIG_EXPERIMENTAL=y
# CONFIG_SWAP is not set
CONFIG_SYSVIPC=y
CONFIG_LOG_BUF_SHIFT=14
# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
CONFIG_EXPERT=y
# CONFIG_SYSCTL_SYSCALL is not set
# CONFIG_HOTPLUG is not set
# CONFIG_BUG is not set
# CONFIG_BASE_FULL is not set
# CONFIG_EPOLL is not set
# CONFIG_VM_EVENT_COUNTERS is not set
# CONFIG_BLK_DEV_BSG is not set
CONFIG_MPC86XADS=y
CONFIG_8xx_COPYBACK=y
CONFIG_8xx_CPU6=y
CONFIG_NO_HZ=y
CONFIG_HIGH_RES_TIMERS=y
CONFIG_HZ_1000=y
CONFIG_MATH_EMULATION=y
CONFIG_SPARSE_IRQ=y
# CONFIG_SECCOMP is not set
CONFIG_NET=y
CONFIG_PACKET=y
CONFIG_UNIX=y
CONFIG_INET=y
CONFIG_IP_MULTICAST=y
CONFIG_IP_PNP=y
CONFIG_SYN_COOKIES=y
# CONFIG_INET_LRO is not set
# CONFIG_IPV6 is not set
CONFIG_BLK_DEV_LOOP=y
CONFIG_NETDEVICES=y
CONFIG_FIXED_PHY=y
CONFIG_NET_ETHERNET=y
CONFIG_FS_ENET=y
# CONFIG_VT is not set
CONFIG_SERIAL_CPM=y
CONFIG_SERIAL_CPM_CONSOLE=y
# CONFIG_LEGACY_PTYS is not set
CONFIG_GEN_RTC=y
CONFIG_VIDEO_OUTPUT_CONTROL=y
CONFIG_EXT2_FS=y
CONFIG_EXT2_FS_XATTR=y
CONFIG_EXT3_FS=y
# CONFIG_EXT3_DEFAULTS_TO_ORDERED is not set
CONFIG_INOTIFY=y
CONFIG_TMPFS=y
CONFIG_CRAMFS=y
CONFIG_NFS_FS=y
CONFIG_NFS_V3=y
CONFIG_ROOT_NFS=y
CONFIG_PARTITION_ADVANCED=y
CONFIG_CRC_CCITT=y
# CONFIG_RCU_CPU_STALL_DETECTOR is not set
# CONFIG_CRYPTO_ANSI_CPRNG is not set
CONFIG_CRC32_SLICEBY4=y