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-rw-r--r--kernel/rcu/tree.h15
1 files changed, 3 insertions, 12 deletions
diff --git a/kernel/rcu/tree.h b/kernel/rcu/tree.h
index 9af0f31d6847..8e1f285f0a70 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 */
@@ -268,7 +266,9 @@ struct rcu_data {
struct rcu_head **nocb_follower_tail;
struct swait_queue_head nocb_wq; /* For nocb kthreads to sleep on. */
struct task_struct *nocb_kthread;
+ raw_spinlock_t nocb_lock; /* Guard following pair of fields. */
int nocb_defer_wakeup; /* Defer wakeup of nocb_kthread. */
+ struct timer_list nocb_timer; /* Enforce finite deferral. */
/* The following fields are used by the leader, hence own cacheline. */
struct rcu_head *nocb_gp_head ____cacheline_internodealigned_in_smp;
@@ -350,15 +350,6 @@ struct rcu_state {
/* End of fields guarded by root rcu_node's lock. */
- raw_spinlock_t orphan_lock ____cacheline_internodealigned_in_smp;
- /* Protect following fields. */
- struct rcu_cblist orphan_pend; /* Orphaned callbacks that */
- /* need a grace period. */
- struct rcu_cblist orphan_done; /* Orphaned callbacks that */
- /* are ready to invoke. */
- /* (Contains counts.) */
- /* End of fields guarded by orphan_lock. */
-
struct mutex barrier_mutex; /* Guards barrier fields. */
atomic_t barrier_cpu_count; /* # CPUs waiting on. */
struct completion barrier_completion; /* Wake at barrier end. */
@@ -495,7 +486,7 @@ static void rcu_nocb_gp_cleanup(struct swait_queue_head *sq);
static void rcu_init_one_nocb(struct rcu_node *rnp);
static bool __call_rcu_nocb(struct rcu_data *rdp, struct rcu_head *rhp,
bool lazy, unsigned long flags);
-static bool rcu_nocb_adopt_orphan_cbs(struct rcu_state *rsp,
+static bool rcu_nocb_adopt_orphan_cbs(struct rcu_data *my_rdp,
struct rcu_data *rdp,
unsigned long flags);
static int rcu_nocb_need_deferred_wakeup(struct rcu_data *rdp);