powerpc: Optimise smp_wmb on 64-bit processors

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For 64-bit processors, lwsync is the recommended method of store/store
ordering on caching enabled memory.  For those subarchs which have
lwsync, use it rather than eieio for smp_wmb.

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

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Nick Piggin 2008-05-22 00:12:31 +10:00 • committed by Paul Mackerras

parent e9a4b6a3f6

commit 74f0609526

1 changed files with 10 additions and 3 deletions

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include/asm-powerpc/system.h

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