powerpc: Optimise smp_wmb

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Change 2d1b202762 ("powerpc: Fixup
lwsync at runtime") removed __SUBARCH_HAS_LWSYNC, causing smp_wmb to
revert back to eieio for all CPUs.  This restores the behaviour
intorduced in 74f0609526 ("powerpc:
Optimise smp_wmb on 64-bit processors").

Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>

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Nick Piggin 2008-11-11 17:50:48 +00:00 • committed by Paul Mackerras

parent a4e22f02f5

commit 46d075be58

2 changed files with 6 additions and 2 deletions

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4

arch/powerpc/include/asm/synch.h

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4

arch/powerpc/include/asm/system.h

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