31 struct rcu_ctrlblk {  struct
39 static struct rcu_ctrlblk rcu_ctrlblk = {  argument
40 	.donetail	= &rcu_ctrlblk.rcucblist,
41 	.curtail	= &rcu_ctrlblk.rcucblist,
57 	if (rcu_ctrlblk.donetail != rcu_ctrlblk.curtail) {  in rcu_qs()
58 		rcu_ctrlblk.donetail = rcu_ctrlblk.curtail;  in rcu_qs()
61 	WRITE_ONCE(rcu_ctrlblk.gp_seq, rcu_ctrlblk.gp_seq + 2);  in rcu_qs()
75 	else if (rcu_ctrlblk.donetail != rcu_ctrlblk.curtail)  in rcu_sched_clock_irq()
106 	if (rcu_ctrlblk.donetail == &rcu_ctrlblk.rcucblist) {  in rcu_process_callbacks()
111 	list = rcu_ctrlblk.rcucblist;  in rcu_process_callbacks()
112 	rcu_ctrlblk.rcucblist = *rcu_ctrlblk.donetail;  in rcu_process_callbacks()
113 	*rcu_ctrlblk.donetail = NULL;  in rcu_process_callbacks()
114 	if (rcu_ctrlblk.curtail == rcu_ctrlblk.donetail)  in rcu_process_callbacks()
115 		rcu_ctrlblk.curtail = &rcu_ctrlblk.rcucblist;  in rcu_process_callbacks()
116 	rcu_ctrlblk.donetail = &rcu_ctrlblk.rcucblist;  in rcu_process_callbacks()
148 	WRITE_ONCE(rcu_ctrlblk.gp_seq, rcu_ctrlblk.gp_seq + 2);  in synchronize_rcu()
175 	*rcu_ctrlblk.curtail = head;  in call_rcu()
176 	rcu_ctrlblk.curtail = &head->next;  in call_rcu()
202 	return READ_ONCE(rcu_ctrlblk.gp_seq);  in get_state_synchronize_rcu()
229 	return oldstate == RCU_GET_STATE_COMPLETED || READ_ONCE(rcu_ctrlblk.gp_seq) != oldstate;  in poll_state_synchronize_rcu()
236 	return READ_ONCE(rcu_ctrlblk.gp_seq) & 0xffffULL;  in rcutorture_gather_gp_seqs()