Implement target specific support for local_try_cmpxchg.

Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: WANG Xuerui <kernel@xen0n.name>
Cc: Jiaxun Yang <jiaxun.yang@flygoat.com>
Cc: Jun Yi <yijun@loongson.cn>
Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
---
 arch/loongarch/include/asm/local.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/loongarch/include/asm/local.h b/arch/loongarch/include/asm/local.h
index 65fbbae9fc4d..dff6bcbe4821 100644
--- a/arch/loongarch/include/asm/local.h
+++ b/arch/loongarch/include/asm/local.h
@@ -58,6 +58,8 @@ static inline long local_sub_return(long i, local_t *l)
 
 #define local_cmpxchg(l, o, n) \
 	((long)cmpxchg_local(&((l)->a.counter), (o), (n)))
+#define local_try_cmpxchg(l, po, n) \
+	(try_cmpxchg_local(&((l)->a.counter), (po), (n)))
 #define local_xchg(l, n) (atomic_long_xchg((&(l)->a), (n)))
 
 /**
-- 
2.39.2