arch/alpha/include/asm/barrier.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __BARRIER_H
   3 #define __BARRIER_H
   4
   5 #define mb()    __asm__ __volatile__("mb": : :"memory")
   6 #define rmb()   __asm__ __volatile__("mb": : :"memory")
   7 #define wmb()   __asm__ __volatile__("wmb": : :"memory")
   8
   9 #define __smp_load_acquire(p)                                           \
  10 ({                                                                      \
  11         compiletime_assert_atomic_type(*p);                             \
  12         __READ_ONCE(*p);                                                \
  13 })
  14
  15 #ifdef CONFIG_SMP
  16 #define __ASM_SMP_MB    "\tmb\n"
  17 #else
  18 #define __ASM_SMP_MB
  19 #endif
  20
  21 #include <asm-generic/barrier.h>
  22
  23 #endif          /* __BARRIER_H */