summaryrefslogtreecommitdiff
path: root/arch/cris/include/asm/barrier.h
diff options
context:
space:
mode:
Diffstat (limited to 'arch/cris/include/asm/barrier.h')
-rw-r--r--arch/cris/include/asm/barrier.h25
1 files changed, 25 insertions, 0 deletions
diff --git a/arch/cris/include/asm/barrier.h b/arch/cris/include/asm/barrier.h
new file mode 100644
index 000000000000..198ad7fa6b25
--- /dev/null
+++ b/arch/cris/include/asm/barrier.h
@@ -0,0 +1,25 @@
+#ifndef __ASM_CRIS_BARRIER_H
+#define __ASM_CRIS_BARRIER_H
+
+#define nop() __asm__ __volatile__ ("nop");
+
+#define barrier() __asm__ __volatile__("": : :"memory")
+#define mb() barrier()
+#define rmb() mb()
+#define wmb() mb()
+#define read_barrier_depends() do { } while(0)
+#define set_mb(var, value) do { var = value; mb(); } while (0)
+
+#ifdef CONFIG_SMP
+#define smp_mb() mb()
+#define smp_rmb() rmb()
+#define smp_wmb() wmb()
+#define smp_read_barrier_depends() read_barrier_depends()
+#else
+#define smp_mb() barrier()
+#define smp_rmb() barrier()
+#define smp_wmb() barrier()
+#define smp_read_barrier_depends() do { } while(0)
+#endif
+
+#endif /* __ASM_CRIS_BARRIER_H */