46 static void srcu_reschedule(struct srcu_struct *ssp, unsigned long delay);
83 static void init_srcu_struct_nodes(struct srcu_struct *ssp, bool is_static)  in init_srcu_struct_nodes()  argument
94 	ssp->level[0] = &ssp->node[0];  in init_srcu_struct_nodes()
96 		ssp->level[i] = ssp->level[i - 1] + num_rcu_lvl[i - 1];  in init_srcu_struct_nodes()
100 	srcu_for_each_node_breadth_first(ssp, snp) {  in init_srcu_struct_nodes()
111 		if (snp == &ssp->node[0]) {  in init_srcu_struct_nodes()
118 		if (snp == ssp->level[level + 1])  in init_srcu_struct_nodes()
120 		snp->srcu_parent = ssp->level[level - 1] +  in init_srcu_struct_nodes()
121 				   (snp - ssp->level[level]) /  in init_srcu_struct_nodes()
132 	snp_first = ssp->level[level];  in init_srcu_struct_nodes()
134 		sdp = per_cpu_ptr(ssp->sda, cpu);  in init_srcu_struct_nodes()
138 		sdp->srcu_gp_seq_needed = ssp->srcu_gp_seq;  in init_srcu_struct_nodes()
139 		sdp->srcu_gp_seq_needed_exp = ssp->srcu_gp_seq;  in init_srcu_struct_nodes()
149 		sdp->ssp = ssp;  in init_srcu_struct_nodes()
168 static int init_srcu_struct_fields(struct srcu_struct *ssp, bool is_static)  in init_srcu_struct_fields()  argument
170 	mutex_init(&ssp->srcu_cb_mutex);  in init_srcu_struct_fields()
171 	mutex_init(&ssp->srcu_gp_mutex);  in init_srcu_struct_fields()
172 	ssp->srcu_idx = 0;  in init_srcu_struct_fields()
173 	ssp->srcu_gp_seq = 0;  in init_srcu_struct_fields()
174 	ssp->srcu_barrier_seq = 0;  in init_srcu_struct_fields()
175 	mutex_init(&ssp->srcu_barrier_mutex);  in init_srcu_struct_fields()
176 	atomic_set(&ssp->srcu_barrier_cpu_cnt, 0);  in init_srcu_struct_fields()
177 	INIT_DELAYED_WORK(&ssp->work, process_srcu);  in init_srcu_struct_fields()
179 		ssp->sda = alloc_percpu(struct srcu_data);  in init_srcu_struct_fields()
180 	init_srcu_struct_nodes(ssp, is_static);  in init_srcu_struct_fields()
181 	ssp->srcu_gp_seq_needed_exp = 0;  in init_srcu_struct_fields()
182 	ssp->srcu_last_gp_end = ktime_get_mono_fast_ns();  in init_srcu_struct_fields()
183 	smp_store_release(&ssp->srcu_gp_seq_needed, 0); /* Init done. */  in init_srcu_struct_fields()
184 	return ssp->sda ? 0 : -ENOMEM;  in init_srcu_struct_fields()
189 int __init_srcu_struct(struct srcu_struct *ssp, const char *name,  in __init_srcu_struct()  argument
193 	debug_check_no_locks_freed((void *)ssp, sizeof(*ssp));  in __init_srcu_struct()
194 	lockdep_init_map(&ssp->dep_map, name, key, 0);  in __init_srcu_struct()
195 	spin_lock_init(&ACCESS_PRIVATE(ssp, lock));  in __init_srcu_struct()
196 	return init_srcu_struct_fields(ssp, false);  in __init_srcu_struct()
204  * @ssp: structure to initialize.
210 int init_srcu_struct(struct srcu_struct *ssp)  in init_srcu_struct()  argument
212 	spin_lock_init(&ACCESS_PRIVATE(ssp, lock));  in init_srcu_struct()
213 	return init_srcu_struct_fields(ssp, false);  in init_srcu_struct()
223  * to each update-side SRCU primitive.  Use ssp->lock, which -is-
227 static void check_init_srcu_struct(struct srcu_struct *ssp)  in check_init_srcu_struct()  argument
232 	if (!rcu_seq_state(smp_load_acquire(&ssp->srcu_gp_seq_needed))) /*^^^*/  in check_init_srcu_struct()
234 	spin_lock_irqsave_rcu_node(ssp, flags);  in check_init_srcu_struct()
235 	if (!rcu_seq_state(ssp->srcu_gp_seq_needed)) {  in check_init_srcu_struct()
236 		spin_unlock_irqrestore_rcu_node(ssp, flags);  in check_init_srcu_struct()
239 	init_srcu_struct_fields(ssp, true);  in check_init_srcu_struct()
240 	spin_unlock_irqrestore_rcu_node(ssp, flags);  in check_init_srcu_struct()
247 static unsigned long srcu_readers_lock_idx(struct srcu_struct *ssp, int idx)  in srcu_readers_lock_idx()  argument
253 		struct srcu_data *cpuc = per_cpu_ptr(ssp->sda, cpu);  in srcu_readers_lock_idx()
264 static unsigned long srcu_readers_unlock_idx(struct srcu_struct *ssp, int idx)  in srcu_readers_unlock_idx()  argument
270 		struct srcu_data *cpuc = per_cpu_ptr(ssp->sda, cpu);  in srcu_readers_unlock_idx()
281 static bool srcu_readers_active_idx_check(struct srcu_struct *ssp, int idx)  in srcu_readers_active_idx_check()  argument
285 	unlocks = srcu_readers_unlock_idx(ssp, idx);  in srcu_readers_active_idx_check()
321 	return srcu_readers_lock_idx(ssp, idx) == unlocks;  in srcu_readers_active_idx_check()
327  * @ssp: which srcu_struct to count active readers (holding srcu_read_lock).
333 static bool srcu_readers_active(struct srcu_struct *ssp)  in srcu_readers_active()  argument
339 		struct srcu_data *cpuc = per_cpu_ptr(ssp->sda, cpu);  in srcu_readers_active()
355 static unsigned long srcu_get_delay(struct srcu_struct *ssp)  in srcu_get_delay()  argument
357 	if (ULONG_CMP_LT(READ_ONCE(ssp->srcu_gp_seq),  in srcu_get_delay()
358 			 READ_ONCE(ssp->srcu_gp_seq_needed_exp)))  in srcu_get_delay()
365  * @ssp: structure to clean up.
370 void cleanup_srcu_struct(struct srcu_struct *ssp)  in cleanup_srcu_struct()  argument
374 	if (WARN_ON(!srcu_get_delay(ssp)))  in cleanup_srcu_struct()
376 	if (WARN_ON(srcu_readers_active(ssp)))  in cleanup_srcu_struct()
378 	flush_delayed_work(&ssp->work);  in cleanup_srcu_struct()
380 		struct srcu_data *sdp = per_cpu_ptr(ssp->sda, cpu);  in cleanup_srcu_struct()
387 	if (WARN_ON(rcu_seq_state(READ_ONCE(ssp->srcu_gp_seq)) != SRCU_STATE_IDLE) ||  in cleanup_srcu_struct()
388 	    WARN_ON(srcu_readers_active(ssp))) {  in cleanup_srcu_struct()
390 			__func__, ssp, rcu_seq_state(READ_ONCE(ssp->srcu_gp_seq)));  in cleanup_srcu_struct()
393 	free_percpu(ssp->sda);  in cleanup_srcu_struct()
394 	ssp->sda = NULL;  in cleanup_srcu_struct()
403 int __srcu_read_lock(struct srcu_struct *ssp)  in __srcu_read_lock()  argument
407 	idx = READ_ONCE(ssp->srcu_idx) & 0x1;  in __srcu_read_lock()
408 	this_cpu_inc(ssp->sda->srcu_lock_count[idx]);  in __srcu_read_lock()
419 void __srcu_read_unlock(struct srcu_struct *ssp, int idx)  in __srcu_read_unlock()  argument
422 	this_cpu_inc(ssp->sda->srcu_unlock_count[idx]);  in __srcu_read_unlock()
438 static void srcu_gp_start(struct srcu_struct *ssp)  in srcu_gp_start()  argument
440 	struct srcu_data *sdp = this_cpu_ptr(ssp->sda);  in srcu_gp_start()
443 	lockdep_assert_held(&ACCESS_PRIVATE(ssp, lock));  in srcu_gp_start()
444 	WARN_ON_ONCE(ULONG_CMP_GE(ssp->srcu_gp_seq, ssp->srcu_gp_seq_needed));  in srcu_gp_start()
447 			      rcu_seq_current(&ssp->srcu_gp_seq));  in srcu_gp_start()
449 				       rcu_seq_snap(&ssp->srcu_gp_seq));  in srcu_gp_start()
452 	rcu_seq_start(&ssp->srcu_gp_seq);  in srcu_gp_start()
453 	state = rcu_seq_state(ssp->srcu_gp_seq);  in srcu_gp_start()
491 static void srcu_schedule_cbs_snp(struct srcu_struct *ssp, struct srcu_node *snp,  in srcu_schedule_cbs_snp()  argument
499 		srcu_schedule_cbs_sdp(per_cpu_ptr(ssp->sda, cpu), delay);  in srcu_schedule_cbs_snp()
512 static void srcu_gp_end(struct srcu_struct *ssp)  in srcu_gp_end()  argument
526 	mutex_lock(&ssp->srcu_cb_mutex);  in srcu_gp_end()
529 	spin_lock_irq_rcu_node(ssp);  in srcu_gp_end()
530 	idx = rcu_seq_state(ssp->srcu_gp_seq);  in srcu_gp_end()
532 	cbdelay = srcu_get_delay(ssp);  in srcu_gp_end()
533 	WRITE_ONCE(ssp->srcu_last_gp_end, ktime_get_mono_fast_ns());  in srcu_gp_end()
534 	rcu_seq_end(&ssp->srcu_gp_seq);  in srcu_gp_end()
535 	gpseq = rcu_seq_current(&ssp->srcu_gp_seq);  in srcu_gp_end()
536 	if (ULONG_CMP_LT(ssp->srcu_gp_seq_needed_exp, gpseq))  in srcu_gp_end()
537 		WRITE_ONCE(ssp->srcu_gp_seq_needed_exp, gpseq);  in srcu_gp_end()
538 	spin_unlock_irq_rcu_node(ssp);  in srcu_gp_end()
539 	mutex_unlock(&ssp->srcu_gp_mutex);  in srcu_gp_end()
544 	srcu_for_each_node_breadth_first(ssp, snp) {  in srcu_gp_end()
547 		last_lvl = snp >= ssp->level[rcu_num_lvls - 1];  in srcu_gp_end()
558 			srcu_schedule_cbs_snp(ssp, snp, mask, cbdelay);  in srcu_gp_end()
563 				sdp = per_cpu_ptr(ssp->sda, cpu);  in srcu_gp_end()
576 	mutex_unlock(&ssp->srcu_cb_mutex);  in srcu_gp_end()
579 	spin_lock_irq_rcu_node(ssp);  in srcu_gp_end()
580 	gpseq = rcu_seq_current(&ssp->srcu_gp_seq);  in srcu_gp_end()
582 	    ULONG_CMP_LT(gpseq, ssp->srcu_gp_seq_needed)) {  in srcu_gp_end()
583 		srcu_gp_start(ssp);  in srcu_gp_end()
584 		spin_unlock_irq_rcu_node(ssp);  in srcu_gp_end()
585 		srcu_reschedule(ssp, 0);  in srcu_gp_end()
587 		spin_unlock_irq_rcu_node(ssp);  in srcu_gp_end()
598 static void srcu_funnel_exp_start(struct srcu_struct *ssp, struct srcu_node *snp,  in srcu_funnel_exp_start()  argument
604 		if (rcu_seq_done(&ssp->srcu_gp_seq, s) ||  in srcu_funnel_exp_start()
615 	spin_lock_irqsave_rcu_node(ssp, flags);  in srcu_funnel_exp_start()
616 	if (ULONG_CMP_LT(ssp->srcu_gp_seq_needed_exp, s))  in srcu_funnel_exp_start()
617 		WRITE_ONCE(ssp->srcu_gp_seq_needed_exp, s);  in srcu_funnel_exp_start()
618 	spin_unlock_irqrestore_rcu_node(ssp, flags);  in srcu_funnel_exp_start()
631 static void srcu_funnel_gp_start(struct srcu_struct *ssp, struct srcu_data *sdp,  in srcu_funnel_gp_start()  argument
641 		if (rcu_seq_done(&ssp->srcu_gp_seq, s) && snp != sdp->mynode)  in srcu_funnel_gp_start()
656 				srcu_funnel_exp_start(ssp, snp, s);  in srcu_funnel_gp_start()
668 	spin_lock_irqsave_rcu_node(ssp, flags);  in srcu_funnel_gp_start()
669 	if (ULONG_CMP_LT(ssp->srcu_gp_seq_needed, s)) {  in srcu_funnel_gp_start()
674 		smp_store_release(&ssp->srcu_gp_seq_needed, s); /*^^^*/  in srcu_funnel_gp_start()
676 	if (!do_norm && ULONG_CMP_LT(ssp->srcu_gp_seq_needed_exp, s))  in srcu_funnel_gp_start()
677 		WRITE_ONCE(ssp->srcu_gp_seq_needed_exp, s);  in srcu_funnel_gp_start()
680 	if (!rcu_seq_done(&ssp->srcu_gp_seq, s) &&  in srcu_funnel_gp_start()
681 	    rcu_seq_state(ssp->srcu_gp_seq) == SRCU_STATE_IDLE) {  in srcu_funnel_gp_start()
682 		WARN_ON_ONCE(ULONG_CMP_GE(ssp->srcu_gp_seq, ssp->srcu_gp_seq_needed));  in srcu_funnel_gp_start()
683 		srcu_gp_start(ssp);  in srcu_funnel_gp_start()
685 			queue_delayed_work(rcu_gp_wq, &ssp->work,  in srcu_funnel_gp_start()
686 					   srcu_get_delay(ssp));  in srcu_funnel_gp_start()
687 		else if (list_empty(&ssp->work.work.entry))  in srcu_funnel_gp_start()
688 			list_add(&ssp->work.work.entry, &srcu_boot_list);  in srcu_funnel_gp_start()
690 	spin_unlock_irqrestore_rcu_node(ssp, flags);  in srcu_funnel_gp_start()
698 static bool try_check_zero(struct srcu_struct *ssp, int idx, int trycount)  in try_check_zero()  argument
701 		if (srcu_readers_active_idx_check(ssp, idx))  in try_check_zero()
703 		if (--trycount + !srcu_get_delay(ssp) <= 0)  in try_check_zero()
714 static void srcu_flip(struct srcu_struct *ssp)  in srcu_flip()  argument
726 	WRITE_ONCE(ssp->srcu_idx, ssp->srcu_idx + 1);  in srcu_flip()
759 static bool srcu_might_be_idle(struct srcu_struct *ssp)  in srcu_might_be_idle()  argument
767 	check_init_srcu_struct(ssp);  in srcu_might_be_idle()
769 	sdp = raw_cpu_ptr(ssp->sda);  in srcu_might_be_idle()
785 	tlast = READ_ONCE(ssp->srcu_last_gp_end);  in srcu_might_be_idle()
791 	curseq = rcu_seq_current(&ssp->srcu_gp_seq);  in srcu_might_be_idle()
793 	if (ULONG_CMP_LT(curseq, READ_ONCE(ssp->srcu_gp_seq_needed)))  in srcu_might_be_idle()
796 	if (curseq != rcu_seq_current(&ssp->srcu_gp_seq))  in srcu_might_be_idle()
836 static void __call_srcu(struct srcu_struct *ssp, struct rcu_head *rhp,  in __call_srcu()  argument
846 	check_init_srcu_struct(ssp);  in __call_srcu()
854 	idx = srcu_read_lock(ssp);  in __call_srcu()
855 	sdp = raw_cpu_ptr(ssp->sda);  in __call_srcu()
859 			      rcu_seq_current(&ssp->srcu_gp_seq));  in __call_srcu()
860 	s = rcu_seq_snap(&ssp->srcu_gp_seq);  in __call_srcu()
872 		srcu_funnel_gp_start(ssp, sdp, s, do_norm);  in __call_srcu()
874 		srcu_funnel_exp_start(ssp, sdp->mynode, s);  in __call_srcu()
875 	srcu_read_unlock(ssp, idx);  in __call_srcu()
880  * @ssp: srcu_struct in queue the callback
895 void call_srcu(struct srcu_struct *ssp, struct rcu_head *rhp,  in call_srcu()  argument
898 	__call_srcu(ssp, rhp, func, true);  in call_srcu()
905 static void __synchronize_srcu(struct srcu_struct *ssp, bool do_norm)  in __synchronize_srcu()  argument
909 	RCU_LOCKDEP_WARN(lock_is_held(&ssp->dep_map) ||  in __synchronize_srcu()
918 	check_init_srcu_struct(ssp);  in __synchronize_srcu()
921 	__call_srcu(ssp, &rcu.head, wakeme_after_rcu, do_norm);  in __synchronize_srcu()
937  * @ssp: srcu_struct with which to synchronize.
945 void synchronize_srcu_expedited(struct srcu_struct *ssp)  in synchronize_srcu_expedited()  argument
947 	__synchronize_srcu(ssp, rcu_gp_is_normal());  in synchronize_srcu_expedited()
953  * @ssp: srcu_struct with which to synchronize.
995 void synchronize_srcu(struct srcu_struct *ssp)  in synchronize_srcu()  argument
997 	if (srcu_might_be_idle(ssp) || rcu_gp_is_expedited())  in synchronize_srcu()
998 		synchronize_srcu_expedited(ssp);  in synchronize_srcu()
1000 		__synchronize_srcu(ssp, true);  in synchronize_srcu()
1010 	struct srcu_struct *ssp;  in srcu_barrier_cb()  local
1013 	ssp = sdp->ssp;  in srcu_barrier_cb()
1014 	if (atomic_dec_and_test(&ssp->srcu_barrier_cpu_cnt))  in srcu_barrier_cb()
1015 		complete(&ssp->srcu_barrier_completion);  in srcu_barrier_cb()
1020  * @ssp: srcu_struct on which to wait for in-flight callbacks.
1022 void srcu_barrier(struct srcu_struct *ssp)  in srcu_barrier()  argument
1026 	unsigned long s = rcu_seq_snap(&ssp->srcu_barrier_seq);  in srcu_barrier()
1028 	check_init_srcu_struct(ssp);  in srcu_barrier()
1029 	mutex_lock(&ssp->srcu_barrier_mutex);  in srcu_barrier()
1030 	if (rcu_seq_done(&ssp->srcu_barrier_seq, s)) {  in srcu_barrier()
1032 		mutex_unlock(&ssp->srcu_barrier_mutex);  in srcu_barrier()
1035 	rcu_seq_start(&ssp->srcu_barrier_seq);  in srcu_barrier()
1036 	init_completion(&ssp->srcu_barrier_completion);  in srcu_barrier()
1039 	atomic_set(&ssp->srcu_barrier_cpu_cnt, 1);  in srcu_barrier()
1050 		sdp = per_cpu_ptr(ssp->sda, cpu);  in srcu_barrier()
1052 		atomic_inc(&ssp->srcu_barrier_cpu_cnt);  in srcu_barrier()
1058 			atomic_dec(&ssp->srcu_barrier_cpu_cnt);  in srcu_barrier()
1064 	if (atomic_dec_and_test(&ssp->srcu_barrier_cpu_cnt))  in srcu_barrier()
1065 		complete(&ssp->srcu_barrier_completion);  in srcu_barrier()
1066 	wait_for_completion(&ssp->srcu_barrier_completion);  in srcu_barrier()
1068 	rcu_seq_end(&ssp->srcu_barrier_seq);  in srcu_barrier()
1069 	mutex_unlock(&ssp->srcu_barrier_mutex);  in srcu_barrier()
1075  * @ssp: srcu_struct on which to report batch completion.
1080 unsigned long srcu_batches_completed(struct srcu_struct *ssp)  in srcu_batches_completed()  argument
1082 	return READ_ONCE(ssp->srcu_idx);  in srcu_batches_completed()
1091 static void srcu_advance_state(struct srcu_struct *ssp)  in srcu_advance_state()  argument
1095 	mutex_lock(&ssp->srcu_gp_mutex);  in srcu_advance_state()
1107 	idx = rcu_seq_state(smp_load_acquire(&ssp->srcu_gp_seq)); /* ^^^ */  in srcu_advance_state()
1109 		spin_lock_irq_rcu_node(ssp);  in srcu_advance_state()
1110 		if (ULONG_CMP_GE(ssp->srcu_gp_seq, ssp->srcu_gp_seq_needed)) {  in srcu_advance_state()
1111 			WARN_ON_ONCE(rcu_seq_state(ssp->srcu_gp_seq));  in srcu_advance_state()
1112 			spin_unlock_irq_rcu_node(ssp);  in srcu_advance_state()
1113 			mutex_unlock(&ssp->srcu_gp_mutex);  in srcu_advance_state()
1116 		idx = rcu_seq_state(READ_ONCE(ssp->srcu_gp_seq));  in srcu_advance_state()
1118 			srcu_gp_start(ssp);  in srcu_advance_state()
1119 		spin_unlock_irq_rcu_node(ssp);  in srcu_advance_state()
1121 			mutex_unlock(&ssp->srcu_gp_mutex);  in srcu_advance_state()
1126 	if (rcu_seq_state(READ_ONCE(ssp->srcu_gp_seq)) == SRCU_STATE_SCAN1) {  in srcu_advance_state()
1127 		idx = 1 ^ (ssp->srcu_idx & 1);  in srcu_advance_state()
1128 		if (!try_check_zero(ssp, idx, 1)) {  in srcu_advance_state()
1129 			mutex_unlock(&ssp->srcu_gp_mutex);  in srcu_advance_state()
1132 		srcu_flip(ssp);  in srcu_advance_state()
1133 		spin_lock_irq_rcu_node(ssp);  in srcu_advance_state()
1134 		rcu_seq_set_state(&ssp->srcu_gp_seq, SRCU_STATE_SCAN2);  in srcu_advance_state()
1135 		spin_unlock_irq_rcu_node(ssp);  in srcu_advance_state()
1138 	if (rcu_seq_state(READ_ONCE(ssp->srcu_gp_seq)) == SRCU_STATE_SCAN2) {  in srcu_advance_state()
1144 		idx = 1 ^ (ssp->srcu_idx & 1);  in srcu_advance_state()
1145 		if (!try_check_zero(ssp, idx, 2)) {  in srcu_advance_state()
1146 			mutex_unlock(&ssp->srcu_gp_mutex);  in srcu_advance_state()
1149 		srcu_gp_end(ssp);  /* Releases ->srcu_gp_mutex. */  in srcu_advance_state()
1165 	struct srcu_struct *ssp;  in srcu_invoke_callbacks()  local
1169 	ssp = sdp->ssp;  in srcu_invoke_callbacks()
1173 			      rcu_seq_current(&ssp->srcu_gp_seq));  in srcu_invoke_callbacks()
1199 				       rcu_seq_snap(&ssp->srcu_gp_seq));  in srcu_invoke_callbacks()
1211 static void srcu_reschedule(struct srcu_struct *ssp, unsigned long delay)  in srcu_reschedule()  argument
1215 	spin_lock_irq_rcu_node(ssp);  in srcu_reschedule()
1216 	if (ULONG_CMP_GE(ssp->srcu_gp_seq, ssp->srcu_gp_seq_needed)) {  in srcu_reschedule()
1217 		if (!WARN_ON_ONCE(rcu_seq_state(ssp->srcu_gp_seq))) {  in srcu_reschedule()
1221 	} else if (!rcu_seq_state(ssp->srcu_gp_seq)) {  in srcu_reschedule()
1223 		srcu_gp_start(ssp);  in srcu_reschedule()
1225 	spin_unlock_irq_rcu_node(ssp);  in srcu_reschedule()
1228 		queue_delayed_work(rcu_gp_wq, &ssp->work, delay);  in srcu_reschedule()
1236 	struct srcu_struct *ssp;  in process_srcu()  local
1238 	ssp = container_of(work, struct srcu_struct, work.work);  in process_srcu()
1240 	srcu_advance_state(ssp);  in process_srcu()
1241 	srcu_reschedule(ssp, srcu_get_delay(ssp));  in process_srcu()
1245 			     struct srcu_struct *ssp, int *flags,  in srcutorture_get_gp_data()  argument
1251 	*gp_seq = rcu_seq_current(&ssp->srcu_gp_seq);  in srcutorture_get_gp_data()
1255 void srcu_torture_stats_print(struct srcu_struct *ssp, char *tt, char *tf)  in srcu_torture_stats_print()  argument
1261 	idx = ssp->srcu_idx & 0x1;  in srcu_torture_stats_print()
1263 		 tt, tf, rcu_seq_current(&ssp->srcu_gp_seq), idx);  in srcu_torture_stats_print()
1270 		sdp = per_cpu_ptr(ssp->sda, cpu);  in srcu_torture_stats_print()
1306 	struct srcu_struct *ssp;  in srcu_init()  local
1310 		ssp = list_first_entry(&srcu_boot_list, struct srcu_struct,  in srcu_init()
1312 		check_init_srcu_struct(ssp);  in srcu_init()
1313 		list_del_init(&ssp->work.work.entry);  in srcu_init()
1314 		queue_work(rcu_gp_wq, &ssp->work.work);  in srcu_init()