[POWERPC] atomic.h: Add atomic64 cmpxchg, xchg and add_unless to powerpc

atomic.h : Add atomic64 cmpxchg, xchg and add_unless to powerpc

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Mathieu Desnoyers 2007-01-25 11:15:52 -05:00 committed by Paul Mackerras
commit 41806ef4bf