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powerpc: Rename LWSYNC_ON_SMP to PPC_RELEASE_BARRIER, ISYNC_ON_SMP to PPC_ACQUIRE_BARRIER

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For performance reasons we are about to change ISYNC_ON_SMP to sometimes be
lwsync. Now that the macro name doesn't make sense, change it and LWSYNC_ON_SMP
to better explain what the barriers are doing.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Anton Blanchard
2010-02-10 01:04:06 +00:00
committed by Benjamin Herrenschmidt
parent 66d99b8834
commit f10e2e5b4b
7 changed files with 65 additions and 60 deletions
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8
arch/powerpc/include/asm/synch.h
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@@ -37,11 +37,11 @@ static inline void isync(void)
#endif
#ifdef CONFIG_SMP
#define ISYNC_ON_SMP "\n\tisync\n"
#define LWSYNC_ON_SMP stringify_in_c(LWSYNC) "\n"
#define PPC_ACQUIRE_BARRIER "\n\tisync\n"
#define PPC_RELEASE_BARRIER stringify_in_c(LWSYNC) "\n"
#else
#define ISYNC_ON_SMP
#define LWSYNC_ON_SMP
#define PPC_ACQUIRE_BARRIER
#define PPC_RELEASE_BARRIER
#endif
#endif /* __KERNEL__ */