git: 7c6c07fcef33 - stable/13 - linuxkpi: Add smp_mb__before/after_atomic

From: Emmanuel Vadot <manu_at_FreeBSD.org>
Date: Wed, 07 Sep 2022 15:10:16 UTC 
The branch stable/13 has been updated by manu:

URL: https://cgit.FreeBSD.org/src/commit/?id=7c6c07fcef33423201dcd80be3557769c05304fc

commit 7c6c07fcef33423201dcd80be3557769c05304fc
Author:     Emmanuel Vadot <manu@FreeBSD.org>
AuthorDate: 2022-08-02 08:08:33 +0000
Commit:     Emmanuel Vadot <manu@FreeBSD.org>
CommitDate: 2022-09-07 15:09:04 +0000

    linuxkpi: Add smp_mb__before/after_atomic
    
    Reviewed by:    hselasky
    Obtained from:  drm-kmod
    Sponsored by:   Beckhoff Automation GmbH & Co. KG
    Differential Revision:  https://reviews.freebsd.org/D36020
    
    (cherry picked from commit eca2f0f3806647f165162e6db35d1af9aba410fa)
---
 sys/compat/linuxkpi/common/include/asm/barrier.h | 3 +++
 1 file changed, 3 insertions(+)

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
@@ -55,4 +55,7 @@
 #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_ */