diff options
Diffstat (limited to 'arch/sparc/include/asm/barrier_64.h')
| -rw-r--r-- | arch/sparc/include/asm/barrier_64.h | 31 |
1 files changed, 18 insertions, 13 deletions
diff --git a/arch/sparc/include/asm/barrier_64.h b/arch/sparc/include/asm/barrier_64.h index 95d45986f908..9fb148bd3c97 100644 --- a/arch/sparc/include/asm/barrier_64.h +++ b/arch/sparc/include/asm/barrier_64.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #ifndef __SPARC64_BARRIER_H #define __SPARC64_BARRIER_H @@ -37,20 +38,24 @@ do { __asm__ __volatile__("ba,pt %%xcc, 1f\n\t" \ #define rmb() __asm__ __volatile__("":::"memory") #define wmb() __asm__ __volatile__("":::"memory") -#define read_barrier_depends() do { } while(0) -#define set_mb(__var, __value) \ - do { __var = __value; membar_safe("#StoreLoad"); } while(0) +#define __smp_store_release(p, v) \ +do { \ + compiletime_assert_atomic_type(*p); \ + barrier(); \ + WRITE_ONCE(*p, v); \ +} while (0) + +#define __smp_load_acquire(p) \ +({ \ + typeof(*p) ___p1 = READ_ONCE(*p); \ + compiletime_assert_atomic_type(*p); \ + barrier(); \ + ___p1; \ +}) -#ifdef CONFIG_SMP -#define smp_mb() mb() -#define smp_rmb() rmb() -#define smp_wmb() wmb() -#else -#define smp_mb() __asm__ __volatile__("":::"memory") -#define smp_rmb() __asm__ __volatile__("":::"memory") -#define smp_wmb() __asm__ __volatile__("":::"memory") -#endif +#define __smp_mb__before_atomic() barrier() +#define __smp_mb__after_atomic() barrier() -#define smp_read_barrier_depends() do { } while(0) +#include <asm-generic/barrier.h> #endif /* !(__SPARC64_BARRIER_H) */ |