test memory model

TaiJuWu · Oct 8, 2023 · fab24e2 · fab24e2
1 parent 370a180
commit fab24e2
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/include/nuttx/spinlock.h b/include/nuttx/spinlock.h
@@ -136,8 +136,10 @@ static inline spinlock_t up_testset(FAR volatile spinlock_t *lock)
 #elif(CONFIG_ATOMIC)
 static inline spinlock_t up_testset(FAR volatile spinlock_t *lock)
 {
+  SP_DSB();
   const static spinlock_t unlock = SP_UNLOCKED;
   int success = atomic_compare_exchange_strong(lock, &unlock, SP_LOCKED);
+  SP_DSB();
   if(success) return SP_UNLOCKED;
   else return SP_LOCKED;
 }