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authorDmitry Torokhov <dmitry.torokhov@gmail.com>2009-06-11 01:58:01 -0700
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2009-06-11 01:58:01 -0700
commit4894e4aca82aca927d0404ce61f021f790de4b1e (patch)
treebbe0d083829f5858295298f188d885367cf4b1f6 /arch/arm/include/asm/assembler.h
parent05e882f890038c702a4f15d385135d03cf74ad48 (diff)
parent07a2039b8eb0af4ff464efd3dfd95de5c02648c6 (diff)
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Merge commit 'v2.6.30' into next
Diffstat (limited to 'arch/arm/include/asm/assembler.h')
-rw-r--r--arch/arm/include/asm/assembler.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/arm/include/asm/assembler.h b/arch/arm/include/asm/assembler.h
index 6116e4893c0..15f8a092b70 100644
--- a/arch/arm/include/asm/assembler.h
+++ b/arch/arm/include/asm/assembler.h
@@ -114,3 +114,16 @@
.align 3; \
.long 9999b,9001f; \
.previous
+
+/*
+ * SMP data memory barrier
+ */
+ .macro smp_dmb
+#ifdef CONFIG_SMP
+#if __LINUX_ARM_ARCH__ >= 7
+ dmb
+#elif __LINUX_ARM_ARCH__ == 6
+ mcr p15, 0, r0, c7, c10, 5 @ dmb
+#endif
+#endif
+ .endm