barrier.h

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/* SPDX-License-Identifier: GPL-2.0+ */
 
#ifndef __RISCV_BARRIER_H__
#define __RISCV_BARRIER_H__
 
#ifdef __cplusplus
extern "C" {
#endif
 
#define RISCV_FENCE(p, s) asm volatile("fence " #p "," #s \
                                       :                  \
                                       :                  \
                                       : "memory")
 
#define mb() RISCV_FENCE(iorw, iorw)
 
#define rmb() RISCV_FENCE(ir, ir)
 
#define wmb() RISCV_FENCE(ow, ow)
 
#define __smp_mb() RISCV_FENCE(rw, rw)
 
#define __smp_rmb() RISCV_FENCE(r, r)
 
#define __smp_wmb() RISCV_FENCE(w, w)
 
#ifdef __cplusplus
}
#endif
 
#endif /* __RISCV_BARRIER_H__ */