spin_unlock_irqrestore(ATOMIC_HASH(v), flags);
return ret;
}
+EXPORT_SYMBOL(atomic_cmpxchg);
+int atomic_add_unless(atomic_t *v, int a, int u)
+{
+ int ret;
+ unsigned long flags;
+
+ spin_lock_irqsave(ATOMIC_HASH(v), flags);
+ ret = v->counter;
+ if (ret != u)
+ v->counter += a;
+ spin_unlock_irqrestore(ATOMIC_HASH(v), flags);
+ return ret != u;
+}
+EXPORT_SYMBOL(atomic_add_unless);
+
+/* Atomic operations are already serializing */
void atomic_set(atomic_t *v, int i)
{
unsigned long flags;
spin_unlock_irqrestore(ATOMIC_HASH(v), flags);
}
EXPORT_SYMBOL(atomic_set);
+
+unsigned long ___set_bit(unsigned long *addr, unsigned long mask)
+{
+ unsigned long old, flags;
+
+ spin_lock_irqsave(ATOMIC_HASH(addr), flags);
+ old = *addr;
+ *addr = old | mask;
+ spin_unlock_irqrestore(ATOMIC_HASH(addr), flags);
+
+ return old & mask;
+}
+EXPORT_SYMBOL(___set_bit);
+
+unsigned long ___clear_bit(unsigned long *addr, unsigned long mask)
+{
+ unsigned long old, flags;
+
+ spin_lock_irqsave(ATOMIC_HASH(addr), flags);
+ old = *addr;
+ *addr = old & ~mask;
+ spin_unlock_irqrestore(ATOMIC_HASH(addr), flags);
+
+ return old & mask;
+}
+EXPORT_SYMBOL(___clear_bit);
+
+unsigned long ___change_bit(unsigned long *addr, unsigned long mask)
+{
+ unsigned long old, flags;
+
+ spin_lock_irqsave(ATOMIC_HASH(addr), flags);
+ old = *addr;
+ *addr = old ^ mask;
+ spin_unlock_irqrestore(ATOMIC_HASH(addr), flags);
+
+ return old & mask;
+}
+EXPORT_SYMBOL(___change_bit);