/* SPDX-License-Identifier: GPL-2.0 */ #include <linux/compiler.h> #if defined(__i386__) || defined(__x86_64__) #include "../../arch/x86/include/asm/barrier.h" #elif defined(__arm__) #include "../../arch/arm/include/asm/barrier.h" #elif defined(__aarch64__) #include "../../arch/arm64/include/asm/barrier.h" #elif defined(__powerpc__) #include "../../arch/powerpc/include/asm/barrier.h" #elif defined(__s390__) #include "../../arch/s390/include/asm/barrier.h" #elif defined(__sh__) #include "../../arch/sh/include/asm/barrier.h" #elif defined(__sparc__) #include "../../arch/sparc/include/asm/barrier.h" #elif defined(__tile__) #include "../../arch/tile/include/asm/barrier.h" #elif defined(__alpha__) #include "../../arch/alpha/include/asm/barrier.h" #elif defined(__mips__) #include "../../arch/mips/include/asm/barrier.h" #elif defined(__ia64__) #include "../../arch/ia64/include/asm/barrier.h" #elif defined(__xtensa__) #include "../../arch/xtensa/include/asm/barrier.h" #else #include <asm-generic/barrier.h> #endif /* * Generic fallback smp_*() definitions for archs that haven't * been updated yet. */ #ifndef smp_rmb # define smp_rmb() rmb() #endif #ifndef smp_wmb # define smp_wmb() wmb() #endif #ifndef smp_mb # define smp_mb() mb() #endif #ifndef smp_store_release # define smp_store_release(p, v) \ do { \ smp_mb(); \ WRITE_ONCE(*p, v); \ } while (0) #endif #ifndef smp_load_acquire # define smp_load_acquire(p) \ ({ \ typeof(*p) ___p1 = READ_ONCE(*p); \ smp_mb(); \ ___p1; \ }) #endif