[S390] cmpxchg: implement cmpxchg64()

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We have a cmpxchg64_local() implementation but strange enough the
SMP capable variant cmpxchg64() is missing. So implement it.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

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Heiko Carstens 2011-03-23 10:16:06 +01:00 • committed by Martin Schwidefsky

parent a2c9dbe8db

commit 54eaae3028

1 changed files with 29 additions and 9 deletions

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arch/s390/include/asm/cmpxchg.h

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