kernel/rcu/tree.h

41 struct rcu_node {
42 	raw_spinlock_t __private lock;	/* Root rcu_node's lock protects */
50 				/*  In leaf rcu_node, each bit corresponds to */
52 				/*  bit corresponds to a child rcu_node */
86 				/*  rcu_node tree? */
87 	struct rcu_node *parent;
105 				/*  boosting is needed for this rcu_node */
107 				/*  queued on this rcu_node structure that */
120 				/*  boosting for this rcu_node structure. */
123 	unsigned long n_boosts;	/* Number of boosts for this rcu_node structure. */
142  * Bitmasks in an rcu_node cover the interval [grplo, grphi] of CPU IDs, and
187 	struct rcu_node *mynode;	/* This CPU's leaf of hierarchy */
271 	/* ->rcu_iw* fields protected by leaf rcu_node ->lock. */
339  * consisting of a single rcu_node.
342 	struct rcu_node node[NUM_RCU_NODES];	/* Hierarchy. */
343 	struct rcu_node *level[RCU_NUM_LVLS + 1];
349 	/* The following fields are guarded by the root rcu_node's lock. */
365 	/* End of fields guarded by root rcu_node's lock. */
467 static int rcu_preempt_blocked_readers_cgp(struct rcu_node *rnp);
469 static bool rcu_preempt_has_tasks(struct rcu_node *rnp);
471 static int rcu_print_task_exp_stall(struct rcu_node *rnp);
472 static void rcu_preempt_check_blocked_tasks(struct rcu_node *rnp);
474 static void dump_blkd_tasks(struct rcu_node *rnp, int ncheck);
475 static void rcu_initiate_boost(struct rcu_node *rnp, unsigned long flags);
476 static void rcu_preempt_boost_start_gp(struct rcu_node *rnp);
479 static void rcu_spawn_one_boost_kthread(struct rcu_node *rnp);
480 static bool rcu_preempt_has_tasks(struct rcu_node *rnp);
483 static struct swait_queue_head *rcu_nocb_gp_get(struct rcu_node *rnp);
485 static void rcu_init_one_nocb(struct rcu_node *rnp);
527 static void rcu_check_gp_start_stall(struct rcu_node *rnp, struct rcu_data *rdp,