diff options
Diffstat (limited to 'arch/alpha/include/asm/barrier.h')
| -rw-r--r-- | arch/alpha/include/asm/barrier.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/arch/alpha/include/asm/barrier.h b/arch/alpha/include/asm/barrier.h new file mode 100644 index 000000000..c56bfffc9 --- /dev/null +++ b/arch/alpha/include/asm/barrier.h @@ -0,0 +1,23 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __BARRIER_H +#define __BARRIER_H + +#define mb() __asm__ __volatile__("mb": : :"memory") +#define rmb() __asm__ __volatile__("mb": : :"memory") +#define wmb() __asm__ __volatile__("wmb": : :"memory") + +#define __smp_load_acquire(p) \ +({ \ + compiletime_assert_atomic_type(*p); \ + __READ_ONCE(*p); \ +}) + +#ifdef CONFIG_SMP +#define __ASM_SMP_MB "\tmb\n" +#else +#define __ASM_SMP_MB +#endif + +#include <asm-generic/barrier.h> + +#endif /* __BARRIER_H */ |