cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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barrier.h (710B)

      1/*
      2 * This file is subject to the terms and conditions of the GNU General Public
      3 * License.  See the file "COPYING" in the main directory of this archive
      4 * for more details.
      5 *
      6 * Copyright (C) 2001 - 2012 Tensilica Inc.
      7 */
      8
      9#ifndef _XTENSA_SYSTEM_H
     10#define _XTENSA_SYSTEM_H
     11
     12#include <asm/core.h>
     13
     14#define __mb()  ({ __asm__ __volatile__("memw" : : : "memory"); })
     15#define __rmb() barrier()
     16#define __wmb() __mb()
     17
     18#ifdef CONFIG_SMP
     19#define __smp_mb() __mb()
     20#define __smp_rmb() __rmb()
     21#define __smp_wmb() __wmb()
     22#endif
     23
     24#if XCHAL_HAVE_S32C1I
     25#define __smp_mb__before_atomic()		barrier()
     26#define __smp_mb__after_atomic()		barrier()
     27#endif
     28
     29#include <asm-generic/barrier.h>
     30
     31#endif /* _XTENSA_SYSTEM_H */