55 static int alloc_masks(struct irq_desc *desc, int node)  in alloc_masks()  argument
57 	if (!zalloc_cpumask_var_node(&desc->irq_common_data.affinity,  in alloc_masks()
62 	if (!zalloc_cpumask_var_node(&desc->irq_common_data.effective_affinity,  in alloc_masks()
64 		free_cpumask_var(desc->irq_common_data.affinity);  in alloc_masks()
70 	if (!zalloc_cpumask_var_node(&desc->pending_mask, GFP_KERNEL, node)) {  in alloc_masks()
72 		free_cpumask_var(desc->irq_common_data.effective_affinity);  in alloc_masks()
74 		free_cpumask_var(desc->irq_common_data.affinity);  in alloc_masks()
81 static void desc_smp_init(struct irq_desc *desc, int node,  in desc_smp_init()  argument
86 	cpumask_copy(desc->irq_common_data.affinity, affinity);  in desc_smp_init()
89 	cpumask_clear(desc->pending_mask);  in desc_smp_init()
92 	desc->irq_common_data.node = node;  in desc_smp_init()
98 alloc_masks(struct irq_desc *desc, int node) { return 0; }  in alloc_masks()  argument
100 desc_smp_init(struct irq_desc *desc, int node, const struct cpumask *affinity) { }  in desc_smp_init()  argument
103 static void desc_set_defaults(unsigned int irq, struct irq_desc *desc, int node,  in desc_set_defaults()  argument
108 	desc->irq_common_data.handler_data = NULL;  in desc_set_defaults()
109 	desc->irq_common_data.msi_desc = NULL;  in desc_set_defaults()
111 	desc->irq_data.common = &desc->irq_common_data;  in desc_set_defaults()
112 	desc->irq_data.irq = irq;  in desc_set_defaults()
113 	desc->irq_data.chip = &no_irq_chip;  in desc_set_defaults()
114 	desc->irq_data.chip_data = NULL;  in desc_set_defaults()
115 	irq_settings_clr_and_set(desc, ~0, _IRQ_DEFAULT_INIT_FLAGS);  in desc_set_defaults()
116 	irqd_set(&desc->irq_data, IRQD_IRQ_DISABLED);  in desc_set_defaults()
117 	irqd_set(&desc->irq_data, IRQD_IRQ_MASKED);  in desc_set_defaults()
118 	desc->handle_irq = handle_bad_irq;  in desc_set_defaults()
119 	desc->depth = 1;  in desc_set_defaults()
120 	desc->irq_count = 0;  in desc_set_defaults()
121 	desc->irqs_unhandled = 0;  in desc_set_defaults()
122 	desc->tot_count = 0;  in desc_set_defaults()
123 	desc->name = NULL;  in desc_set_defaults()
124 	desc->owner = owner;  in desc_set_defaults()
126 		*per_cpu_ptr(desc->kstat_irqs, cpu) = 0;  in desc_set_defaults()
127 	desc_smp_init(desc, node, affinity);  in desc_set_defaults()
149 	struct irq_desc *desc = container_of(kobj, struct irq_desc, kobj);  in per_cpu_count_show()  local
155 		unsigned int c = irq_desc_kstat_cpu(desc, cpu);  in per_cpu_count_show()
169 	struct irq_desc *desc = container_of(kobj, struct irq_desc, kobj);  in chip_name_show()  local
172 	raw_spin_lock_irq(&desc->lock);  in chip_name_show()
173 	if (desc->irq_data.chip && desc->irq_data.chip->name) {  in chip_name_show()
175 				desc->irq_data.chip->name);  in chip_name_show()
177 	raw_spin_unlock_irq(&desc->lock);  in chip_name_show()
186 	struct irq_desc *desc = container_of(kobj, struct irq_desc, kobj);  in hwirq_show()  local
189 	raw_spin_lock_irq(&desc->lock);  in hwirq_show()
190 	if (desc->irq_data.domain)  in hwirq_show()
191 		ret = sprintf(buf, "%lu\n", desc->irq_data.hwirq);  in hwirq_show()
192 	raw_spin_unlock_irq(&desc->lock);  in hwirq_show()
201 	struct irq_desc *desc = container_of(kobj, struct irq_desc, kobj);  in type_show()  local
204 	raw_spin_lock_irq(&desc->lock);  in type_show()
206 		      irqd_is_level_type(&desc->irq_data) ? "level" : "edge");  in type_show()
207 	raw_spin_unlock_irq(&desc->lock);  in type_show()
217 	struct irq_desc *desc = container_of(kobj, struct irq_desc, kobj);  in wakeup_show()  local
220 	raw_spin_lock_irq(&desc->lock);  in wakeup_show()
222 		      irqd_is_wakeup_set(&desc->irq_data) ? "enabled" : "disabled");  in wakeup_show()
223 	raw_spin_unlock_irq(&desc->lock);  in wakeup_show()
233 	struct irq_desc *desc = container_of(kobj, struct irq_desc, kobj);  in name_show()  local
236 	raw_spin_lock_irq(&desc->lock);  in name_show()
237 	if (desc->name)  in name_show()
238 		ret = scnprintf(buf, PAGE_SIZE, "%s\n", desc->name);  in name_show()
239 	raw_spin_unlock_irq(&desc->lock);  in name_show()
248 	struct irq_desc *desc = container_of(kobj, struct irq_desc, kobj);  in actions_show()  local
253 	raw_spin_lock_irq(&desc->lock);  in actions_show()
254 	for (action = desc->action; action != NULL; action = action->next) {  in actions_show()
259 	raw_spin_unlock_irq(&desc->lock);  in actions_show()
286 static void irq_sysfs_add(int irq, struct irq_desc *desc)  in irq_sysfs_add()  argument
293 		if (kobject_add(&desc->kobj, irq_kobj_base, "%d", irq))  in irq_sysfs_add()
298 static void irq_sysfs_del(struct irq_desc *desc)  in irq_sysfs_del()  argument
307 		kobject_del(&desc->kobj);  in irq_sysfs_del()
312 	struct irq_desc *desc;  in irq_sysfs_init()  local
325 	for_each_irq_desc(irq, desc)  in irq_sysfs_init()
326 		irq_sysfs_add(irq, desc);  in irq_sysfs_init()
339 static void irq_sysfs_add(int irq, struct irq_desc *desc) {}  in irq_sysfs_add()  argument
340 static void irq_sysfs_del(struct irq_desc *desc) {}  in irq_sysfs_del()  argument
346 static void irq_insert_desc(unsigned int irq, struct irq_desc *desc)  in irq_insert_desc()  argument
348 	radix_tree_insert(&irq_desc_tree, irq, desc);  in irq_insert_desc()
365 static void free_masks(struct irq_desc *desc)  in free_masks()  argument
368 	free_cpumask_var(desc->pending_mask);  in free_masks()
370 	free_cpumask_var(desc->irq_common_data.affinity);  in free_masks()
372 	free_cpumask_var(desc->irq_common_data.effective_affinity);  in free_masks()
376 static inline void free_masks(struct irq_desc *desc) { }  in free_masks()  argument
393 	struct irq_desc *desc;  in alloc_desc()  local
395 	desc = kzalloc_node(sizeof(*desc), GFP_KERNEL, node);  in alloc_desc()
396 	if (!desc)  in alloc_desc()
399 	desc->kstat_irqs = alloc_percpu(unsigned int);  in alloc_desc()
400 	if (!desc->kstat_irqs)  in alloc_desc()
403 	if (alloc_masks(desc, node))  in alloc_desc()
406 	raw_spin_lock_init(&desc->lock);  in alloc_desc()
407 	lockdep_set_class(&desc->lock, &irq_desc_lock_class);  in alloc_desc()
408 	mutex_init(&desc->request_mutex);  in alloc_desc()
409 	init_rcu_head(&desc->rcu);  in alloc_desc()
411 	desc_set_defaults(irq, desc, node, affinity, owner);  in alloc_desc()
412 	irqd_set(&desc->irq_data, flags);  in alloc_desc()
413 	kobject_init(&desc->kobj, &irq_kobj_type);  in alloc_desc()
415 	return desc;  in alloc_desc()
418 	free_percpu(desc->kstat_irqs);  in alloc_desc()
420 	kfree(desc);  in alloc_desc()
426 	struct irq_desc *desc = container_of(kobj, struct irq_desc, kobj);  in irq_kobj_release()  local
428 	free_masks(desc);  in irq_kobj_release()
429 	free_percpu(desc->kstat_irqs);  in irq_kobj_release()
430 	kfree(desc);  in irq_kobj_release()
435 	struct irq_desc *desc = container_of(rhp, struct irq_desc, rcu);  in delayed_free_desc()  local
437 	kobject_put(&desc->kobj);  in delayed_free_desc()
442 	struct irq_desc *desc = irq_to_desc(irq);  in free_desc()  local
444 	irq_remove_debugfs_entry(desc);  in free_desc()
445 	unregister_irq_proc(irq, desc);  in free_desc()
456 	irq_sysfs_del(desc);  in free_desc()
465 	call_rcu(&desc->rcu, delayed_free_desc);  in free_desc()
472 	struct irq_desc *desc;  in alloc_descs()  local
497 		desc = alloc_desc(start + i, node, flags, mask, owner);  in alloc_descs()
498 		if (!desc)  in alloc_descs()
500 		irq_insert_desc(start + i, desc);  in alloc_descs()
501 		irq_sysfs_add(start + i, desc);  in alloc_descs()
502 		irq_add_debugfs_entry(start + i, desc);  in alloc_descs()
524 	struct irq_desc *desc;  in early_irq_init()  local
543 		desc = alloc_desc(i, node, 0, NULL, NULL);  in early_irq_init()
545 		irq_insert_desc(i, desc);  in early_irq_init()
563 	struct irq_desc *desc;  in early_irq_init()  local
569 	desc = irq_desc;  in early_irq_init()
573 		desc[i].kstat_irqs = alloc_percpu(unsigned int);  in early_irq_init()
574 		alloc_masks(&desc[i], node);  in early_irq_init()
575 		raw_spin_lock_init(&desc[i].lock);  in early_irq_init()
576 		lockdep_set_class(&desc[i].lock, &irq_desc_lock_class);  in early_irq_init()
577 		mutex_init(&desc[i].request_mutex);  in early_irq_init()
578 		desc_set_defaults(i, &desc[i], node, NULL, NULL);  in early_irq_init()
591 	struct irq_desc *desc = irq_to_desc(irq);  in free_desc()  local
594 	raw_spin_lock_irqsave(&desc->lock, flags);  in free_desc()
595 	desc_set_defaults(irq, desc, irq_desc_get_node(desc), NULL, NULL);  in free_desc()
596 	raw_spin_unlock_irqrestore(&desc->lock, flags);  in free_desc()
606 		struct irq_desc *desc = irq_to_desc(start + i);  in alloc_descs()  local
608 		desc->owner = owner;  in alloc_descs()
635 int handle_irq_desc(struct irq_desc *desc)  in handle_irq_desc()  argument
639 	if (!desc)  in handle_irq_desc()
642 	data = irq_desc_get_irq_data(desc);  in handle_irq_desc()
646 	generic_handle_irq_desc(desc);  in handle_irq_desc()
693 	struct irq_desc *desc;  in handle_domain_irq()  local
699 	desc = irq_resolve_mapping(domain, hwirq);  in handle_domain_irq()
700 	if (likely(desc))  in handle_domain_irq()
701 		handle_irq_desc(desc);  in handle_domain_irq()
724 	struct irq_desc *desc;  in handle_domain_nmi()  local
732 	desc = irq_resolve_mapping(domain, hwirq);  in handle_domain_nmi()
738 	if (likely(desc))  in handle_domain_nmi()
739 		handle_irq_desc(desc);  in handle_domain_nmi()
842 	struct irq_desc *desc = irq_to_desc(irq);  in __irq_get_desc_lock()  local
844 	if (desc) {  in __irq_get_desc_lock()
847 			    !irq_settings_is_per_cpu_devid(desc))  in __irq_get_desc_lock()
851 			    irq_settings_is_per_cpu_devid(desc))  in __irq_get_desc_lock()
856 			chip_bus_lock(desc);  in __irq_get_desc_lock()
857 		raw_spin_lock_irqsave(&desc->lock, *flags);  in __irq_get_desc_lock()
859 	return desc;  in __irq_get_desc_lock()
862 void __irq_put_desc_unlock(struct irq_desc *desc, unsigned long flags, bool bus)  in __irq_put_desc_unlock()  argument
863 	__releases(&desc->lock)  in __irq_put_desc_unlock()
865 	raw_spin_unlock_irqrestore(&desc->lock, flags);  in __irq_put_desc_unlock()
867 		chip_bus_sync_unlock(desc);  in __irq_put_desc_unlock()
873 	struct irq_desc *desc = irq_to_desc(irq);  in irq_set_percpu_devid_partition()  local
875 	if (!desc)  in irq_set_percpu_devid_partition()
878 	if (desc->percpu_enabled)  in irq_set_percpu_devid_partition()
881 	desc->percpu_enabled = kzalloc(sizeof(*desc->percpu_enabled), GFP_KERNEL);  in irq_set_percpu_devid_partition()
883 	if (!desc->percpu_enabled)  in irq_set_percpu_devid_partition()
887 		desc->percpu_affinity = affinity;  in irq_set_percpu_devid_partition()
889 		desc->percpu_affinity = cpu_possible_mask;  in irq_set_percpu_devid_partition()
902 	struct irq_desc *desc = irq_to_desc(irq);  in irq_get_percpu_devid_partition()  local
904 	if (!desc || !desc->percpu_enabled)  in irq_get_percpu_devid_partition()
908 		cpumask_copy(affinity, desc->percpu_affinity);  in irq_get_percpu_devid_partition()
930 	struct irq_desc *desc = irq_to_desc(irq);  in kstat_irqs_cpu()  local
932 	return desc && desc->kstat_irqs ?  in kstat_irqs_cpu()
933 			*per_cpu_ptr(desc->kstat_irqs, cpu) : 0;  in kstat_irqs_cpu()
936 static bool irq_is_nmi(struct irq_desc *desc)  in irq_is_nmi()  argument
938 	return desc->istate & IRQS_NMI;  in irq_is_nmi()
943 	struct irq_desc *desc = irq_to_desc(irq);  in kstat_irqs()  local
947 	if (!desc || !desc->kstat_irqs)  in kstat_irqs()
949 	if (!irq_settings_is_per_cpu_devid(desc) &&  in kstat_irqs()
950 	    !irq_settings_is_per_cpu(desc) &&  in kstat_irqs()
951 	    !irq_is_nmi(desc))  in kstat_irqs()
952 		return data_race(desc->tot_count);  in kstat_irqs()
955 		sum += data_race(*per_cpu_ptr(desc->kstat_irqs, cpu));  in kstat_irqs()
983 	struct irq_desc *desc = irq_to_desc(irq);  in __irq_set_lockdep_class()  local
985 	if (desc) {  in __irq_set_lockdep_class()
986 		lockdep_set_class(&desc->lock, lock_class);  in __irq_set_lockdep_class()
987 		lockdep_set_class(&desc->request_mutex, request_class);  in __irq_set_lockdep_class()