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-rw-r--r--kernel/rcutree.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/kernel/rcutree.h b/kernel/rcutree.h
index 0024e5ddcc68..ca560364d8cd 100644
--- a/kernel/rcutree.h
+++ b/kernel/rcutree.h
@@ -80,6 +80,7 @@ struct rcu_dynticks {
*/
struct rcu_node {
spinlock_t lock;
+ long gpnum; /* Current grace period for this node. */
unsigned long qsmask; /* CPUs or groups that need to switch in */
/* order for current grace period to proceed.*/
unsigned long qsmaskinit;
@@ -90,6 +91,8 @@ struct rcu_node {
u8 grpnum; /* CPU/group number for next level up. */
u8 level; /* root is at level 0. */
struct rcu_node *parent;
+ struct list_head blocked_tasks[2];
+ /* Tasks blocked in RCU read-side critsect. */
} ____cacheline_internodealigned_in_smp;
/* Index values for nxttail array in struct rcu_data. */
@@ -111,6 +114,7 @@ struct rcu_data {
bool passed_quiesc; /* User-mode/idle loop etc. */
bool qs_pending; /* Core waits for quiesc state. */
bool beenonline; /* CPU online at least once. */
+ bool preemptable; /* Preemptable RCU? */
struct rcu_node *mynode; /* This CPU's leaf of hierarchy */
unsigned long grpmask; /* Mask to apply to leaf qsmask. */
@@ -244,5 +248,10 @@ DECLARE_PER_CPU(struct rcu_data, rcu_sched_data);
extern struct rcu_state rcu_bh_state;
DECLARE_PER_CPU(struct rcu_data, rcu_bh_data);
+#ifdef CONFIG_TREE_PREEMPT_RCU
+extern struct rcu_state rcu_preempt_state;
+DECLARE_PER_CPU(struct rcu_data, rcu_preempt_data);
+#endif /* #ifdef CONFIG_TREE_PREEMPT_RCU */
+
#endif /* #ifdef RCU_TREE_NONCORE */