aboutsummaryrefslogtreecommitdiffstats
path: root/arch/sh/include/asm/barrier.h
diff options
context:
space:
mode:
Diffstat (limited to 'arch/sh/include/asm/barrier.h')
-rw-r--r--arch/sh/include/asm/barrier.h21
1 files changed, 3 insertions, 18 deletions
diff --git a/arch/sh/include/asm/barrier.h b/arch/sh/include/asm/barrier.h
index 72c103dae300..43715308b068 100644
--- a/arch/sh/include/asm/barrier.h
+++ b/arch/sh/include/asm/barrier.h
@@ -26,29 +26,14 @@
26#if defined(CONFIG_CPU_SH4A) || defined(CONFIG_CPU_SH5) 26#if defined(CONFIG_CPU_SH4A) || defined(CONFIG_CPU_SH5)
27#define mb() __asm__ __volatile__ ("synco": : :"memory") 27#define mb() __asm__ __volatile__ ("synco": : :"memory")
28#define rmb() mb() 28#define rmb() mb()
29#define wmb() __asm__ __volatile__ ("synco": : :"memory") 29#define wmb() mb()
30#define ctrl_barrier() __icbi(PAGE_OFFSET) 30#define ctrl_barrier() __icbi(PAGE_OFFSET)
31#define read_barrier_depends() do { } while(0)
32#else 31#else
33#define mb() __asm__ __volatile__ ("": : :"memory")
34#define rmb() mb()
35#define wmb() __asm__ __volatile__ ("": : :"memory")
36#define ctrl_barrier() __asm__ __volatile__ ("nop;nop;nop;nop;nop;nop;nop;nop") 32#define ctrl_barrier() __asm__ __volatile__ ("nop;nop;nop;nop;nop;nop;nop;nop")
37#define read_barrier_depends() do { } while(0)
38#endif
39
40#ifdef CONFIG_SMP
41#define smp_mb() mb()
42#define smp_rmb() rmb()
43#define smp_wmb() wmb()
44#define smp_read_barrier_depends() read_barrier_depends()
45#else
46#define smp_mb() barrier()
47#define smp_rmb() barrier()
48#define smp_wmb() barrier()
49#define smp_read_barrier_depends() do { } while(0)
50#endif 33#endif
51 34
52#define set_mb(var, value) do { (void)xchg(&var, value); } while (0) 35#define set_mb(var, value) do { (void)xchg(&var, value); } while (0)
53 36
37#include <asm-generic/barrier.h>
38
54#endif /* __ASM_SH_BARRIER_H */ 39#endif /* __ASM_SH_BARRIER_H */