| /* 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" |
| #elif defined(__nds32__) |
| #include "../../arch/nds32/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 |