Define __smp_timewait_store() to support waiting for a condition
variable via __cmpwait_relaxed().
Used from smp_cond_load_{relaxed,acquire}_timewait().
Cc: Will Deacon <will@xxxxxxxxxx>
Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
Reviewed-by: Christoph Lameter (Ampere) <cl@xxxxxxxxxx>
Reviewed-by: Haris Okanovic <harisokn@xxxxxxxxxx>
Signed-off-by: Ankur Arora <ankur.a.arora@xxxxxxxxxx>
---
arch/arm64/include/asm/barrier.h | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/arch/arm64/include/asm/barrier.h b/arch/arm64/include/asm/barrier.h
index 1ca947d5c939..7c56e2621c7d 100644
--- a/arch/arm64/include/asm/barrier.h
+++ b/arch/arm64/include/asm/barrier.h
@@ -216,6 +216,12 @@ do { \
(typeof(*ptr))VAL; \
})
+/*
+ * Support waiting in smp_cond_load_{relaxed,acquire}_timewait().
+ */
+#define __smp_timewait_store(ptr, val) \
+ __cmpwait_relaxed(ptr, val)
+
#include <asm-generic/barrier.h>
#endif /* __ASSEMBLY__ */
--
2.43.5
