--- zzzz-none-000/linux-5.4.213/kernel/locking/semaphore.c	2022-09-15 10:04:56.000000000 +0000
+++ alder-5690pro-762/linux-5.4.213/kernel/locking/semaphore.c	2024-08-14 09:02:11.000000000 +0000
@@ -260,3 +260,16 @@
 	waiter->up = true;
 	wake_up_process(waiter->task);
 }
+
+#ifdef CONFIG_AVM_FASTIRQ
+struct task_struct *__rte_sem_partial_wake(struct semaphore *sem)
+{
+	struct semaphore_waiter *waiter = list_first_entry(&sem->wait_list,
+						struct semaphore_waiter, list);
+
+	list_del(&waiter->list);
+	waiter->up = true;
+
+	return waiter->task;
+}
+#endif