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| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2017-06-23 20:30:08 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2017-07-25 13:04:46 -0700 |
| commit | c47e067a3c57835fe5ce24d50482f5c325a64efd (patch) | |
| tree | 0114f24119ea81274f9d8042b2a8e254d3a60c7c /kernel/rcu | |
| parent | a2b2df207acff1e3f965ff2c7c38255b06d583cb (diff) | |
| download | linux-stable-c47e067a3c57835fe5ce24d50482f5c325a64efd.tar.gz linux-stable-c47e067a3c57835fe5ce24d50482f5c325a64efd.tar.bz2 linux-stable-c47e067a3c57835fe5ce24d50482f5c325a64efd.zip | |
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>
Diffstat (limited to 'kernel/rcu')
| -rw-r--r-- | kernel/rcu/tree.c | 2 | ||||
| -rw-r--r-- | kernel/rcu/tree.h | 2 |
2 files changed, 0 insertions, 4 deletions
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c index f431114bc06a..f5acf34247fb 100644 --- a/kernel/rcu/tree.c +++ b/kernel/rcu/tree.c @@ -3871,7 +3871,6 @@ rcu_send_cbs_to_orphanage(int cpu, struct rcu_state *rsp, * 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); /* @@ -3910,7 +3909,6 @@ static void rcu_adopt_orphan_cbs(struct rcu_state *rsp, unsigned long flags) 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 9af0f31d6847..aec53c4d4aec 100644 --- a/kernel/rcu/tree.h +++ b/kernel/rcu/tree.h @@ -219,8 +219,6 @@ struct rcu_data { /* 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 */ |