Heiko Carstens efc1d23b3d s390: enable ARCH_USE_CMPXCHG_LOCKREF ... Enable ARCH_USE_CMPXCHG_LOCKREF since it shows performance improvements with Linus' simple stat() test case of up to 50% on a 30 cpu system. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>		2013-09-28 12:46:29 +02:00
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