Hello, Paul.

On Mon, Jan 08, 2018 at 04:31:27PM -0800, Paul E. McKenney wrote:

+static int __init rcu_init_wq_rescuer(void)
+{
+	WARN_ON(init_rescuer(rcu_gp_workqueue));
+	return 0;
+}
+core_initcall(rcu_init_wq_rescuer);

So, what I don't get is why RCU needs to call this explicitly.
core_initcall() is after workqueue_init() anyway.  Why am I missing?

Thanks.

-- 
tejun