arch/loongarch/include/asm/barrier.h

60

#define __smp_mb__before_atomic() barrier()

arch/mips/include/asm/barrier.h

128

# define __smp_mb__before_atomic()

arch/mips/include/asm/barrier.h

130

# define __smp_mb__before_atomic() __smp_mb__before_llsc()

arch/s390/include/asm/barrier.h

55

#define __smp_mb__before_atomic() barrier()

arch/sparc/include/asm/barrier_64.h

56

#define __smp_mb__before_atomic() barrier()

arch/x86/include/asm/barrier.h

75

#define __smp_mb__before_atomic() do { } while (0)

arch/xtensa/include/asm/barrier.h

25

#define __smp_mb__before_atomic() barrier()

include/asm-generic/barrier.h

131

#define __smp_mb__before_atomic() __smp_mb()