rcu: Remove orphan/adopt event-tracing fields
The rcu_node structure's ->n_cbs_orphaned and ->n_cbs_adopted fields
are updated, but never read. This commit therefore removes them.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
index 1fd5cf9..0b781b0 100644
--- a/kernel/rcu/tree.c
+++ b/kernel/rcu/tree.c
@@ -3855,7 +3855,6 @@
* because _rcu_barrier() excludes CPU-hotplug operations, so it
* cannot be running now. Thus no memory barrier is required.
*/
- rdp->n_cbs_orphaned += rcu_segcblist_n_cbs(&rdp->cblist);
rcu_segcblist_extract_count(&rdp->cblist, &rsp->orphan_done);
/*
@@ -3894,7 +3893,6 @@
return;
/* Do the accounting first. */
- rdp->n_cbs_adopted += rsp->orphan_done.len;
if (rsp->orphan_done.len_lazy != rsp->orphan_done.len)
rcu_idle_count_callbacks_posted();
rcu_segcblist_insert_count(&rdp->cblist, &rsp->orphan_done);
diff --git a/kernel/rcu/tree.h b/kernel/rcu/tree.h
index fe83f68..f76105d 100644
--- a/kernel/rcu/tree.h
+++ b/kernel/rcu/tree.h
@@ -219,8 +219,6 @@
/* qlen at last check for QS forcing */
unsigned long n_cbs_invoked; /* count of RCU cbs invoked. */
unsigned long n_nocbs_invoked; /* count of no-CBs RCU cbs invoked. */
- unsigned long n_cbs_orphaned; /* RCU cbs orphaned by dying CPU */
- unsigned long n_cbs_adopted; /* RCU cbs adopted from dying CPU */
unsigned long n_force_qs_snap;
/* did other CPU force QS recently? */
long blimit; /* Upper limit on a processed batch */
