32 struct irq_entry {  struct
33 	struct irq_entry *next;  argument
38 static struct irq_entry *active_fds;  argument
65 	struct irq_entry *irq_entry;  in sigio_handler()  local
90 			irq_entry = (struct irq_entry *)  in sigio_handler()
93 				irq = irq_entry->irq_array[j];  in sigio_handler()
99 					irq_entry->irq_array[j] = NULL;  in sigio_handler()
109 static int assign_epoll_events_to_irq(struct irq_entry *irq_entry)  in assign_epoll_events_to_irq()  argument
116 		irq = irq_entry->irq_array[i];  in assign_epoll_events_to_irq()
122 		return os_add_epoll_fd(events, irq_entry->fd, irq_entry);  in assign_epoll_events_to_irq()
125 	return os_del_epoll_fd(irq_entry->fd);  in assign_epoll_events_to_irq()
133 	struct irq_entry *irq_entry;  in activate_fd()  local
146 	for (irq_entry = active_fds;  in activate_fd()
147 		irq_entry != NULL; irq_entry = irq_entry->next) {  in activate_fd()
148 		if (irq_entry->fd == fd)  in activate_fd()
152 	if (irq_entry == NULL) {  in activate_fd()
156 		irq_entry = kmalloc(sizeof(struct irq_entry), GFP_ATOMIC);  in activate_fd()
157 		if (irq_entry == NULL) {  in activate_fd()
162 		irq_entry->fd = fd;  in activate_fd()
164 			irq_entry->irq_array[i] = NULL;  in activate_fd()
165 		irq_entry->next = active_fds;  in activate_fd()
166 		active_fds = irq_entry;  in activate_fd()
173 	if (irq_entry->irq_array[type] != NULL) {  in activate_fd()
201 		os_del_epoll_fd(irq_entry->fd);  in activate_fd()
202 		irq_entry->irq_array[type] = new_fd;  in activate_fd()
206 	assign_epoll_events_to_irq(irq_entry);  in activate_fd()
226 	struct irq_entry *walk;  in garbage_collect_irq_entries()
227 	struct irq_entry *previous = NULL;  in garbage_collect_irq_entries()
228 	struct irq_entry *to_free;  in garbage_collect_irq_entries()
259 static struct irq_entry *get_irq_entry_by_fd(int fd)  in get_irq_entry_by_fd()
261 	struct irq_entry *walk = active_fds;  in get_irq_entry_by_fd()
283 	struct irq_entry *irq_entry,  in do_free_by_irq_and_dev()  argument
293 		if (irq_entry->irq_array[i] != NULL) {  in do_free_by_irq_and_dev()
296 				(irq_entry->irq_array[i]->irq == irq)) &&  in do_free_by_irq_and_dev()
298 				(irq_entry->irq_array[i]->id == dev))  in do_free_by_irq_and_dev()
303 				os_del_epoll_fd(irq_entry->fd);  in do_free_by_irq_and_dev()
304 				to_free = irq_entry->irq_array[i];  in do_free_by_irq_and_dev()
305 				irq_entry->irq_array[i] = NULL;  in do_free_by_irq_and_dev()
306 				assign_epoll_events_to_irq(irq_entry);  in do_free_by_irq_and_dev()
318 	struct irq_entry *to_free;  in free_irq_by_fd()
338 	struct irq_entry *to_free;  in free_irq_by_irq_and_dev()
359 	struct irq_entry *to_free;  in deactivate_fd()
387 	struct irq_entry *to_free;  in deactivate_all_fds()