195 struct rcu_data {  struct
197 	unsigned long	completed;	/* Track rsp->completed gp number */
199 	unsigned long	gpnum;		/* Highest gp number that this CPU */
201 	unsigned long	rcu_qs_ctr_snap;/* Snapshot of rcu_qs_ctr to check */
203 	union rcu_noqs	cpu_no_qs;	/* No QSes yet for this CPU. */
204 	bool		core_needs_qs;	/* Core waits for quiesc state. */
205 	bool		beenonline;	/* CPU online at least once. */
206 	bool		gpwrap;		/* Possible gpnum/completed wrap. */
207 	struct rcu_node *mynode;	/* This CPU's leaf of hierarchy */
208 	unsigned long grpmask;		/* Mask to apply to leaf qsmask. */
209 	unsigned long	ticks_this_gp;	/* The number of scheduling-clock */
215 	struct rcu_segcblist cblist;	/* Segmented callback list, with */
218 	long		qlen_last_fqs_check;
220 	unsigned long	n_cbs_invoked;	/* count of RCU cbs invoked. */
221 	unsigned long	n_nocbs_invoked; /* count of no-CBs RCU cbs invoked. */
222 	unsigned long	n_force_qs_snap;
224 	long		blimit;		/* Upper limit on a processed batch */
227 	struct rcu_dynticks *dynticks;	/* Shared per-CPU dynticks state. */
228 	int dynticks_snap;		/* Per-GP tracking for dynticks. */
231 	unsigned long dynticks_fqs;	/* Kicked due to dynticks idle. */
232 	unsigned long offline_fqs;	/* Kicked due to being offline. */
233 	unsigned long cond_resched_completed;
238 	unsigned long n_rcu_pending;	/* rcu_pending() calls since boot. */
239 	unsigned long n_rp_core_needs_qs;
240 	unsigned long n_rp_report_qs;
241 	unsigned long n_rp_cb_ready;
242 	unsigned long n_rp_cpu_needs_gp;
243 	unsigned long n_rp_gp_completed;
244 	unsigned long n_rp_gp_started;
245 	unsigned long n_rp_nocb_defer_wakeup;
246 	unsigned long n_rp_need_nothing;
249 	struct rcu_head barrier_head;
251 	struct rcu_head oom_head;
253 	atomic_long_t exp_workdone0;	/* # done by workqueue. */
254 	atomic_long_t exp_workdone1;	/* # done by others #1. */
278 	struct rcu_data *nocb_next_follower;  argument
282 	struct rcu_data *nocb_leader ____cacheline_internodealigned_in_smp;  argument
293 /* Values for nocb_defer_wakeup field in struct rcu_data. */  argument