rcu: Add event tracing for no-CBs CPUs' callback registration

Signed-off-by: Paul E. McKenney <paul.mckenney@linaro.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

diff --git a/kernel/rcutree_plugin.h b/kernel/rcutree_plugin.h
index 90a19145255014933705d5f77ced7528e8930946..7225a5a14cef5937567a7ebdf4c7c51c58bc2608 100644 (file)
--- a/kernel/rcutree_plugin.h
+++ b/kernel/rcutree_plugin.h
@@ -2285,6 +2285,13 @@ static bool __call_rcu_nocb(struct rcu_data *rdp, struct rcu_head *rhp,
        if (!is_nocb_cpu(rdp->cpu))
                return 0;
        __call_rcu_nocb_enqueue(rdp, rhp, &rhp->next, 1, lazy);
+       if (__is_kfree_rcu_offset((unsigned long)rhp->func))
+               trace_rcu_kfree_callback(rdp->rsp->name, rhp,
+                                        (unsigned long)rhp->func,
+                                        rdp->qlen_lazy, rdp->qlen);
+       else
+               trace_rcu_callback(rdp->rsp->name, rhp,
+                                  rdp->qlen_lazy, rdp->qlen);
        return 1;
 }