diff --git a/sys/compat/linuxkpi/common/include/asm/barrier.h b/sys/compat/linuxkpi/common/include/asm/barrier.h index 12b4736e1939..ab59ff19dee0 100644 --- a/sys/compat/linuxkpi/common/include/asm/barrier.h +++ b/sys/compat/linuxkpi/common/include/asm/barrier.h @@ -1,58 +1,61 @@ /*- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD * * Copyright (c) 2021 Vladimir Kondratyev * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice unmodified, this list of conditions, and the following * disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef _LINUXKPI_ASM_BARRIER_H_ #define _LINUXKPI_ASM_BARRIER_H_ #include #include #include #include /* TODO: Check other archs for atomic_thread_fence_* useability */ #if defined(__amd64__) || defined(__i386__) #define smp_mb() atomic_thread_fence_seq_cst() #define smp_wmb() atomic_thread_fence_rel() #define smp_rmb() atomic_thread_fence_acq() #define smp_store_mb(x, v) do { (void)xchg(&(x), v); } while (0) #endif #ifndef smp_mb #define smp_mb() mb() #endif #ifndef smp_wmb #define smp_wmb() wmb() #endif #ifndef smp_rmb #define smp_rmb() rmb() #endif #ifndef smp_store_mb #define smp_store_mb(x, v) do { WRITE_ONCE(x, v); smp_mb(); } while (0) #endif +#define smp_mb__before_atomic() barrier() +#define smp_mb__after_atomic() barrier() + #endif /* _LINUXKPI_ASM_BARRIER_H_ */