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-rw-r--r--arch/mips/include/asm/barrier.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/mips/include/asm/barrier.h b/arch/mips/include/asm/barrier.h
index a2670a239e0c..c0884f02d3a6 100644
--- a/arch/mips/include/asm/barrier.h
+++ b/arch/mips/include/asm/barrier.h
@@ -168,8 +168,14 @@
#ifdef CONFIG_CPU_CAVIUM_OCTEON
#define smp_mb__before_llsc() smp_wmb()
+/* Cause previous writes to become visible on all CPUs as soon as possible */
+#define nudge_writes() __asm__ __volatile__(".set push\n\t" \
+ ".set arch=octeon\n\t" \
+ "syncw\n\t" \
+ ".set pop" : : : "memory")
#else
#define smp_mb__before_llsc() smp_llsc_mb()
+#define nudge_writes() mb()
#endif
#endif /* __ASM_BARRIER_H */
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