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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atomic.h (840B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef __ASM_SH_ATOMIC_H
      3#define __ASM_SH_ATOMIC_H
      4
      5#if defined(CONFIG_CPU_J2)
      6
      7#include <asm-generic/atomic.h>
      8
      9#else
     10
     11/*
     12 * Atomic operations that C can't guarantee us.  Useful for
     13 * resource counting etc..
     14 *
     15 */
     16
     17#include <linux/compiler.h>
     18#include <linux/types.h>
     19#include <asm/cmpxchg.h>
     20#include <asm/barrier.h>
     21
     22#define arch_atomic_read(v)		READ_ONCE((v)->counter)
     23#define arch_atomic_set(v,i)		WRITE_ONCE((v)->counter, (i))
     24
     25#if defined(CONFIG_GUSA_RB)
     26#include <asm/atomic-grb.h>
     27#elif defined(CONFIG_CPU_SH4A)
     28#include <asm/atomic-llsc.h>
     29#else
     30#include <asm/atomic-irq.h>
     31#endif
     32
     33#define arch_atomic_xchg(v, new)	(arch_xchg(&((v)->counter), new))
     34#define arch_atomic_cmpxchg(v, o, n)	(arch_cmpxchg(&((v)->counter), (o), (n)))
     35
     36#endif /* CONFIG_CPU_J2 */
     37
     38#endif /* __ASM_SH_ATOMIC_H */