301 struct rcu_data {  struct
303 	unsigned long	completed;	/* Track rsp->completed gp number */
305 	unsigned long	gpnum;		/* Highest gp number that this CPU */
307 	unsigned long	rcu_qs_ctr_snap;/* Snapshot of rcu_qs_ctr to check */
309 	union rcu_noqs	cpu_no_qs;	/* No QSes yet for this CPU. */
310 	bool		core_needs_qs;	/* Core waits for quiesc state. */
311 	bool		beenonline;	/* CPU online at least once. */
312 	bool		gpwrap;		/* Possible gpnum/completed wrap. */
313 	struct rcu_node *mynode;	/* This CPU's leaf of hierarchy */
314 	unsigned long grpmask;		/* Mask to apply to leaf qsmask. */
315 	unsigned long	ticks_this_gp;	/* The number of scheduling-clock */
343 	struct rcu_head *nxtlist;
344 	struct rcu_head **nxttail[RCU_NEXT_SIZE];
345 	unsigned long	nxtcompleted[RCU_NEXT_SIZE];
347 	long		qlen_lazy;	/* # of lazy queued callbacks */
348 	long		qlen;		/* # of queued callbacks, incl lazy */
349 	long		qlen_last_fqs_check;
351 	unsigned long	n_cbs_invoked;	/* count of RCU cbs invoked. */
352 	unsigned long	n_nocbs_invoked; /* count of no-CBs RCU cbs invoked. */
353 	unsigned long   n_cbs_orphaned; /* RCU cbs orphaned by dying CPU */
354 	unsigned long   n_cbs_adopted;  /* RCU cbs adopted from dying CPU */
355 	unsigned long	n_force_qs_snap;
357 	long		blimit;		/* Upper limit on a processed batch */
360 	struct rcu_dynticks *dynticks;	/* Shared per-CPU dynticks state. */
361 	int dynticks_snap;		/* Per-GP tracking for dynticks. */
364 	unsigned long dynticks_fqs;	/* Kicked due to dynticks idle. */
365 	unsigned long offline_fqs;	/* Kicked due to being offline. */
366 	unsigned long cond_resched_completed;
371 	unsigned long n_rcu_pending;	/* rcu_pending() calls since boot. */
372 	unsigned long n_rp_core_needs_qs;
373 	unsigned long n_rp_report_qs;
374 	unsigned long n_rp_cb_ready;
375 	unsigned long n_rp_cpu_needs_gp;
376 	unsigned long n_rp_gp_completed;
377 	unsigned long n_rp_gp_started;
378 	unsigned long n_rp_nocb_defer_wakeup;
379 	unsigned long n_rp_need_nothing;
405 	struct rcu_data *nocb_next_follower;  argument
409 	struct rcu_data *nocb_leader ____cacheline_internodealigned_in_smp;  argument
420 /* Values for nocb_defer_wakeup field in struct rcu_data. */  argument