1 files changed, 15 insertions, 0 deletions
diff --git a/exec.h b/exec.h
index 92b248d..1f46e4a 100644
--- a/exec.h
+++ b/exec.h
@@ -324,6 +324,7 @@ typedef int spinlock_t;
 
 #define SPIN_LOCK_UNLOCKED 0
 
+#if 1
 static inline void spin_lock(spinlock_t *lock)
 {
     while (testandset(lock));
@@ -338,6 +339,20 @@ static inline int spin_trylock(spinlock_t *lock)
 {
     return !testandset(lock);
 }
+#else
+static inline void spin_lock(spinlock_t *lock)
+{
+}
+
+static inline void spin_unlock(spinlock_t *lock)
+{
+}
+
+static inline int spin_trylock(spinlock_t *lock)
+{
+    return 1;
+}
+#endif
 
 extern spinlock_t tb_lock;