125 	struct srcu_data *sdp;  in init_srcu_struct_data()  local
131 	WARN_ON_ONCE(ARRAY_SIZE(sdp->srcu_lock_count) !=  in init_srcu_struct_data()
132 		     ARRAY_SIZE(sdp->srcu_unlock_count));  in init_srcu_struct_data()
134 		sdp = per_cpu_ptr(ssp->sda, cpu);  in init_srcu_struct_data()
135 		spin_lock_init(&ACCESS_PRIVATE(sdp, lock));  in init_srcu_struct_data()
136 		rcu_segcblist_init(&sdp->srcu_cblist);  in init_srcu_struct_data()
137 		sdp->srcu_cblist_invoking = false;  in init_srcu_struct_data()
138 		sdp->srcu_gp_seq_needed = ssp->srcu_sup->srcu_gp_seq;  in init_srcu_struct_data()
139 		sdp->srcu_gp_seq_needed_exp = ssp->srcu_sup->srcu_gp_seq;  in init_srcu_struct_data()
140 		sdp->srcu_barrier_head.next = &sdp->srcu_barrier_head;  in init_srcu_struct_data()
141 		sdp->mynode = NULL;  in init_srcu_struct_data()
142 		sdp->cpu = cpu;  in init_srcu_struct_data()
143 		INIT_WORK(&sdp->work, srcu_invoke_callbacks);  in init_srcu_struct_data()
144 		timer_setup(&sdp->delay_work, srcu_delay_timer, 0);  in init_srcu_struct_data()
145 		sdp->ssp = ssp;  in init_srcu_struct_data()
171 	struct srcu_data *sdp;  in init_srcu_struct_nodes()  local
220 		sdp = per_cpu_ptr(ssp->sda, cpu);  in init_srcu_struct_nodes()
221 		sdp->mynode = &snp_first[cpu / levelspread[level]];  in init_srcu_struct_nodes()
222 		for (snp = sdp->mynode; snp != NULL; snp = snp->srcu_parent) {  in init_srcu_struct_nodes()
227 		sdp->grpmask = 1UL << (cpu - sdp->mynode->grplo);  in init_srcu_struct_nodes()
371 static void spin_lock_irqsave_sdp_contention(struct srcu_data *sdp, unsigned long *flags)  in spin_lock_irqsave_sdp_contention()  argument
373 	struct srcu_struct *ssp = sdp->ssp;  in spin_lock_irqsave_sdp_contention()
375 	if (spin_trylock_irqsave_rcu_node(sdp, *flags))  in spin_lock_irqsave_sdp_contention()
380 	spin_lock_irqsave_rcu_node(sdp, *flags);  in spin_lock_irqsave_sdp_contention()
660 		struct srcu_data *sdp = per_cpu_ptr(ssp->sda, cpu);  in cleanup_srcu_struct()  local
662 		del_timer_sync(&sdp->delay_work);  in cleanup_srcu_struct()
663 		flush_work(&sdp->work);  in cleanup_srcu_struct()
664 		if (WARN_ON(rcu_segcblist_n_cbs(&sdp->srcu_cblist)))  in cleanup_srcu_struct()
698 	struct srcu_data *sdp;  in srcu_check_nmi_safety()  local
702 	sdp = raw_cpu_ptr(ssp->sda);  in srcu_check_nmi_safety()
703 	old_nmi_safe_mask = READ_ONCE(sdp->srcu_nmi_safety);  in srcu_check_nmi_safety()
705 		WRITE_ONCE(sdp->srcu_nmi_safety, nmi_safe_mask);  in srcu_check_nmi_safety()
708 …WARN_ONCE(old_nmi_safe_mask != nmi_safe_mask, "CPU %d old state %d new state %d\n", sdp->cpu, old_…  in srcu_check_nmi_safety()
751 	struct srcu_data *sdp = raw_cpu_ptr(ssp->sda);  in __srcu_read_lock_nmisafe()  local
754 	atomic_long_inc(&sdp->srcu_lock_count[idx]);  in __srcu_read_lock_nmisafe()
767 	struct srcu_data *sdp = raw_cpu_ptr(ssp->sda);  in __srcu_read_unlock_nmisafe()  local
770 	atomic_long_inc(&sdp->srcu_unlock_count[idx]);  in __srcu_read_unlock_nmisafe()
796 	struct srcu_data *sdp = container_of(t, struct srcu_data, delay_work);  in srcu_delay_timer()  local
798 	queue_work_on(sdp->cpu, rcu_gp_wq, &sdp->work);  in srcu_delay_timer()
801 static void srcu_queue_delayed_work_on(struct srcu_data *sdp,  in srcu_queue_delayed_work_on()  argument
805 		queue_work_on(sdp->cpu, rcu_gp_wq, &sdp->work);  in srcu_queue_delayed_work_on()
809 	timer_reduce(&sdp->delay_work, jiffies + delay);  in srcu_queue_delayed_work_on()
816 static void srcu_schedule_cbs_sdp(struct srcu_data *sdp, unsigned long delay)  in srcu_schedule_cbs_sdp()  argument
818 	srcu_queue_delayed_work_on(sdp, delay);  in srcu_schedule_cbs_sdp()
857 	struct srcu_data *sdp;  in srcu_gp_end()  local
914 			sdp = per_cpu_ptr(ssp->sda, cpu);  in srcu_gp_end()
915 			spin_lock_irq_rcu_node(sdp);  in srcu_gp_end()
916 			if (ULONG_CMP_GE(gpseq, sdp->srcu_gp_seq_needed + 100))  in srcu_gp_end()
917 				sdp->srcu_gp_seq_needed = gpseq;  in srcu_gp_end()
918 			if (ULONG_CMP_GE(gpseq, sdp->srcu_gp_seq_needed_exp + 100))  in srcu_gp_end()
919 				sdp->srcu_gp_seq_needed_exp = gpseq;  in srcu_gp_end()
920 			spin_unlock_irq_rcu_node(sdp);  in srcu_gp_end()
994 static void srcu_funnel_gp_start(struct srcu_struct *ssp, struct srcu_data *sdp,  in srcu_funnel_gp_start()  argument
998 	int idx = rcu_seq_ctr(s) % ARRAY_SIZE(sdp->mynode->srcu_have_cbs);  in srcu_funnel_gp_start()
1009 		snp_leaf = sdp->mynode;  in srcu_funnel_gp_start()
1020 					snp->srcu_data_have_cbs[idx] |= sdp->grpmask;  in srcu_funnel_gp_start()
1023 					srcu_schedule_cbs_sdp(sdp, do_norm ? SRCU_INTERVAL : 0);  in srcu_funnel_gp_start()
1032 				snp->srcu_data_have_cbs[idx] |= sdp->grpmask;  in srcu_funnel_gp_start()
1166 	struct srcu_data *sdp;  in srcu_might_be_idle()  local
1172 	sdp = raw_cpu_ptr(ssp->sda);  in srcu_might_be_idle()
1173 	spin_lock_irqsave_rcu_node(sdp, flags);  in srcu_might_be_idle()
1174 	if (rcu_segcblist_pend_cbs(&sdp->srcu_cblist)) {  in srcu_might_be_idle()
1175 		spin_unlock_irqrestore_rcu_node(sdp, flags);  in srcu_might_be_idle()
1178 	spin_unlock_irqrestore_rcu_node(sdp, flags);  in srcu_might_be_idle()
1222 	struct srcu_data *sdp;  in srcu_gp_start_if_needed()  local
1235 		sdp = per_cpu_ptr(ssp->sda, get_boot_cpu_id());  in srcu_gp_start_if_needed()
1237 		sdp = raw_cpu_ptr(ssp->sda);  in srcu_gp_start_if_needed()
1238 	spin_lock_irqsave_sdp_contention(sdp, &flags);  in srcu_gp_start_if_needed()
1240 		rcu_segcblist_enqueue(&sdp->srcu_cblist, rhp);  in srcu_gp_start_if_needed()
1279 		rcu_segcblist_advance(&sdp->srcu_cblist,  in srcu_gp_start_if_needed()
1288 		WARN_ON_ONCE(!rcu_segcblist_accelerate(&sdp->srcu_cblist, s));  in srcu_gp_start_if_needed()
1290 	if (ULONG_CMP_LT(sdp->srcu_gp_seq_needed, s)) {  in srcu_gp_start_if_needed()
1291 		sdp->srcu_gp_seq_needed = s;  in srcu_gp_start_if_needed()
1294 	if (!do_norm && ULONG_CMP_LT(sdp->srcu_gp_seq_needed_exp, s)) {  in srcu_gp_start_if_needed()
1295 		sdp->srcu_gp_seq_needed_exp = s;  in srcu_gp_start_if_needed()
1298 	spin_unlock_irqrestore_rcu_node(sdp, flags);  in srcu_gp_start_if_needed()
1304 		sdp_mynode = sdp->mynode;  in srcu_gp_start_if_needed()
1307 		srcu_funnel_gp_start(ssp, sdp, s, do_norm);  in srcu_gp_start_if_needed()
1563 	struct srcu_data *sdp;  in srcu_barrier_cb()  local
1567 	sdp = container_of(rhp, struct srcu_data, srcu_barrier_head);  in srcu_barrier_cb()
1568 	ssp = sdp->ssp;  in srcu_barrier_cb()
1581 static void srcu_barrier_one_cpu(struct srcu_struct *ssp, struct srcu_data *sdp)  in srcu_barrier_one_cpu()  argument
1583 	spin_lock_irq_rcu_node(sdp);  in srcu_barrier_one_cpu()
1585 	sdp->srcu_barrier_head.func = srcu_barrier_cb;  in srcu_barrier_one_cpu()
1586 	debug_rcu_head_queue(&sdp->srcu_barrier_head);  in srcu_barrier_one_cpu()
1587 	if (!rcu_segcblist_entrain(&sdp->srcu_cblist,  in srcu_barrier_one_cpu()
1588 				   &sdp->srcu_barrier_head)) {  in srcu_barrier_one_cpu()
1589 		debug_rcu_head_unqueue(&sdp->srcu_barrier_head);  in srcu_barrier_one_cpu()
1592 	spin_unlock_irq_rcu_node(sdp);  in srcu_barrier_one_cpu()
1730 	struct srcu_data *sdp;  in srcu_invoke_callbacks()  local
1733 	sdp = container_of(work, struct srcu_data, work);  in srcu_invoke_callbacks()
1735 	ssp = sdp->ssp;  in srcu_invoke_callbacks()
1737 	spin_lock_irq_rcu_node(sdp);  in srcu_invoke_callbacks()
1738 	WARN_ON_ONCE(!rcu_segcblist_segempty(&sdp->srcu_cblist, RCU_NEXT_TAIL));  in srcu_invoke_callbacks()
1739 	rcu_segcblist_advance(&sdp->srcu_cblist,  in srcu_invoke_callbacks()
1746 	if (sdp->srcu_cblist_invoking ||  in srcu_invoke_callbacks()
1747 	    !rcu_segcblist_ready_cbs(&sdp->srcu_cblist)) {  in srcu_invoke_callbacks()
1748 		spin_unlock_irq_rcu_node(sdp);  in srcu_invoke_callbacks()
1753 	sdp->srcu_cblist_invoking = true;  in srcu_invoke_callbacks()
1754 	rcu_segcblist_extract_done_cbs(&sdp->srcu_cblist, &ready_cbs);  in srcu_invoke_callbacks()
1756 	spin_unlock_irq_rcu_node(sdp);  in srcu_invoke_callbacks()
1771 	spin_lock_irq_rcu_node(sdp);  in srcu_invoke_callbacks()
1772 	rcu_segcblist_add_len(&sdp->srcu_cblist, -len);  in srcu_invoke_callbacks()
1773 	sdp->srcu_cblist_invoking = false;  in srcu_invoke_callbacks()
1774 	more = rcu_segcblist_ready_cbs(&sdp->srcu_cblist);  in srcu_invoke_callbacks()
1775 	spin_unlock_irq_rcu_node(sdp);  in srcu_invoke_callbacks()
1778 		srcu_schedule_cbs_sdp(sdp, 0);  in srcu_invoke_callbacks()
1881 			struct srcu_data *sdp;  in srcu_torture_stats_print()  local
1883 			sdp = per_cpu_ptr(ssp->sda, cpu);  in srcu_torture_stats_print()
1884 			u0 = data_race(atomic_long_read(&sdp->srcu_unlock_count[!idx]));  in srcu_torture_stats_print()
1885 			u1 = data_race(atomic_long_read(&sdp->srcu_unlock_count[idx]));  in srcu_torture_stats_print()
1893 			l0 = data_race(atomic_long_read(&sdp->srcu_lock_count[!idx]));  in srcu_torture_stats_print()
1894 			l1 = data_race(atomic_long_read(&sdp->srcu_lock_count[idx]));  in srcu_torture_stats_print()
1900 				"C."[rcu_segcblist_empty(&sdp->srcu_cblist)]);  in srcu_torture_stats_print()