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-rw-r--r--include/linux/spinlock.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/include/linux/spinlock.h b/include/linux/spinlock.h
index b4e5ca23f840..1341f7d62da4 100644
--- a/include/linux/spinlock.h
+++ b/include/linux/spinlock.h
@@ -1,6 +1,7 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __LINUX_SPINLOCK_H
#define __LINUX_SPINLOCK_H
+#define __LINUX_INSIDE_SPINLOCK_H
/*
* include/linux/spinlock.h - generic spinlock/rwlock declarations
@@ -171,7 +172,7 @@ do { \
* Architectures that can implement ACQUIRE better need to take care.
*/
#ifndef smp_mb__after_spinlock
-#define smp_mb__after_spinlock() do { } while (0)
+#define smp_mb__after_spinlock() kcsan_mb()
#endif
#ifdef CONFIG_DEBUG_SPINLOCK
@@ -492,4 +493,5 @@ int __alloc_bucket_spinlocks(spinlock_t **locks, unsigned int *lock_mask,
void free_bucket_spinlocks(spinlock_t *locks);
+#undef __LINUX_INSIDE_SPINLOCK_H
#endif /* __LINUX_SPINLOCK_H */