sched: disable gentle fair sleepers
arm: Allow CPU-supported unaligned accesses
This change reconfigures the CPU to allow CPU-supported unaligned
accesses, which are generally faster than software-only fixups,
resulting in fewer alignment exceptions.

Signed-off-by: Brent DeGraaf <bdegraaf@codeaurora.org>
arm/crypto: Add optimized AES and SHA1 routines
Add assembler versions of AES and SHA1 for ARM platforms.  This has provided
up to a 50% improvement in IPsec/TCP throughout for tunnels using AES128/SHA1.

Platform   CPU SPeed    Endian   Before (bps)   After (bps)   Improvement

IXP425      533 MHz      big     11217042        15566294        ~38%
KS8695      166 MHz     little    3828549         5795373        ~51%

Signed-off-by: David McCullough <ucdevel@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Optimized ARM RWSEM algorithm
RWSEM implementation for ARM using atomic functions.
Heavily based on arch/sh/include/asm/rwsem.h

Signed-off-by: Ashwin Chaugule <ashwinc@codeaurora.org>