Changes in kernel/generic/include/lib/refcount.h [1a1e124:4805495] in mainline

File:

• kernel/generic/include/lib/refcount.h (modified) (2 diffs)

kernel/generic/include/lib/refcount.h

@@ -49 +49 @@
 } atomic_refcount_t;
 
-#define REFCOUNT_INITIALIZER() { \
-        .__cnt = ATOMIC_VAR_INIT(0), \
-}
-
 static inline void refcount_init(atomic_refcount_t *rc)
 {
-        atomic_init(&rc->__cnt, 0);
+        atomic_store_explicit(&rc->__cnt, 0, memory_order_relaxed);
 }
 
@@ -78 +74 @@
         assert(old >= 0);
         (void) old;
-}
-
-/**
- * Try to upgrade a weak reference.
- * Naturally, this is contingent on another form of synchronization being used
- * to ensure that the object continues to exist while the weak reference is in
- * use.
- */
-static inline bool refcount_try_up(atomic_refcount_t *rc)
-{
-        int cnt = atomic_load_explicit(&rc->__cnt, memory_order_relaxed);
-
-        while (cnt >= 0) {
-                if (atomic_compare_exchange_weak_explicit(&rc->__cnt, &cnt, cnt + 1,
-                    memory_order_relaxed, memory_order_relaxed)) {
-                        return true;
-                }
-        }
-
-        return false;
 }