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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_BARRIER_H
#define __ASM_BARRIER_H
#ifndef __ASSEMBLY__
/* The synchronize caches instruction executes as a nop on systems in
which all memory references are performed in order. */
#define synchronize_caches() __asm__ __volatile__ ("sync" : : : "memory")
#if defined(CONFIG_SMP)
#define mb() do { synchronize_caches(); } while (0)
#define rmb() mb()
#define wmb() mb()
#define dma_rmb() mb()
#define dma_wmb() mb()
#else
#define mb() barrier()
#define rmb() barrier()
#define wmb() barrier()
#define dma_rmb() barrier()
#define dma_wmb() barrier()
#endif
#define __smp_mb() mb()
#define __smp_rmb() mb()
#define __smp_wmb() mb()
#include <asm-generic/barrier.h>
#endif /* !__ASSEMBLY__ */
#endif /* __ASM_BARRIER_H */