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[Xen-changelog] [xen-unstable] x86: smp_mb__{before, after}_clear_bit()
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| Subject: | [Xen-changelog] [xen-unstable] x86: smp_mb__{before, after}_clear_bit() are no-ops. |
| From: | Xen patchbot-unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx> |
| Date: | Sat, 06 Sep 2008 01:40:14 -0700 |
| Delivery-date: | Sat, 06 Sep 2008 01:40:23 -0700 |
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# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1220535476 -3600
# Node ID 8d982c7a0d303de1200134fcf3a2573f6f4449fa
# Parent 7d1eadfe463178b04e20a4a3e8dc28b87301849b
x86: smp_mb__{before,after}_clear_bit() are no-ops.
Signed-off-by: Keir Fraser <keir.fraser@xxxxxxxxxx>
---
xen/include/asm-x86/bitops.h | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff -r 7d1eadfe4631 -r 8d982c7a0d30 xen/include/asm-x86/bitops.h
--- a/xen/include/asm-x86/bitops.h Thu Sep 04 11:55:48 2008 +0100
+++ b/xen/include/asm-x86/bitops.h Thu Sep 04 14:37:56 2008 +0100
@@ -116,8 +116,8 @@ static inline void __clear_bit(int nr, v
__clear_bit(nr, addr); \
})
-#define smp_mb__before_clear_bit() barrier()
-#define smp_mb__after_clear_bit() barrier()
+#define smp_mb__before_clear_bit() ((void)0)
+#define smp_mb__after_clear_bit() ((void)0)
/**
* __change_bit - Toggle a bit in memory
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