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From 1aec627c60fe9efc3313e553cef389adda08e7b4 Mon Sep 17 00:00:00 2001
From: Rob Norris <rob.norris@klarasystems.com>
Date: Fri, 1 Aug 2025 08:51:47 +1000
Subject: [PATCH] linux/atomic: fill out API for atomic pointer ops
Sponsored-by: Klara, Inc.
Sponsored-by: Wasabi Technology, Inc.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <alexander.motin@TrueNAS.com>
Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Closes #17580
---
include/os/linux/spl/sys/atomic.h | 32 +++++++++++++++++++++++++++++++
1 file changed, 32 insertions(+)
diff --git a/include/os/linux/spl/sys/atomic.h b/include/os/linux/spl/sys/atomic.h
index b2a39d7d6..f4bcd58bd 100644
--- a/include/os/linux/spl/sys/atomic.h
+++ b/include/os/linux/spl/sys/atomic.h
@@ -71,6 +71,22 @@ atomic_cas_ptr(volatile void *target, void *cmp, void *newval)
return ((void *)atomic_cas_64((volatile uint64_t *)target,
(uint64_t)cmp, (uint64_t)newval));
}
+static __inline__ void *
+atomic_swap_ptr(volatile void *target, void *newval)
+{
+ return ((void *)atomic_swap_64((volatile uint64_t *)target,
+ (uint64_t)newval));
+}
+static __inline__ void *
+atomic_load_ptr(volatile void *target)
+{
+ return ((void *)atomic_load_64((volatile uint64_t *)target));
+}
+static __inline__ void
+atomic_store_ptr(volatile void *target, void *newval)
+{
+ atomic_store_64((volatile uint64_t *)target, (uint64_t)newval);
+}
#else /* _LP64 */
static __inline__ void *
atomic_cas_ptr(volatile void *target, void *cmp, void *newval)
@@ -78,6 +94,22 @@ atomic_cas_ptr(volatile void *target, void *cmp, void *newval)
return ((void *)atomic_cas_32((volatile uint32_t *)target,
(uint32_t)cmp, (uint32_t)newval));
}
+static __inline__ void *
+atomic_swap_ptr(volatile void *target, void *newval)
+{
+ return ((void *)atomic_swap_32((volatile uint32_t *)target,
+ (uint32_t)newval));
+}
+static __inline__ void *
+atomic_load_ptr(volatile void *target)
+{
+ return ((void *)atomic_load_32((volatile uint32_t *)target));
+}
+static __inline__ void
+atomic_store_ptr(volatile void *target, void *newval)
+{
+ atomic_store_32((volatile uint32_t *)target, (uint32_t)newval);
+}
#endif /* _LP64 */
#endif /* _SPL_ATOMIC_H */
--
2.43.0
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