858 static void irqfd_deactivate(struct privcmd_kernel_irqfd *kirqfd)  in irqfd_deactivate()  argument
862 	list_del_init(&kirqfd->list);  in irqfd_deactivate()
863 	queue_work(irqfd_cleanup_wq, &kirqfd->shutdown);  in irqfd_deactivate()
868 	struct privcmd_kernel_irqfd *kirqfd =  in irqfd_shutdown()  local
872 	eventfd_ctx_remove_wait_queue(kirqfd->eventfd, &kirqfd->wait, &cnt);  in irqfd_shutdown()
873 	eventfd_ctx_put(kirqfd->eventfd);  in irqfd_shutdown()
874 	kfree(kirqfd);  in irqfd_shutdown()
877 static void irqfd_inject(struct privcmd_kernel_irqfd *kirqfd)  in irqfd_inject()  argument
882 	eventfd_ctx_do_read(kirqfd->eventfd, &cnt);  in irqfd_inject()
885 	rc = HYPERVISOR_dm_op(kirqfd->dom, 1, &kirqfd->xbufs);  in irqfd_inject()
889 	if (rc && !kirqfd->error) {  in irqfd_inject()
891 		       kirqfd->dom);  in irqfd_inject()
894 	kirqfd->error = rc;  in irqfd_inject()
900 	struct privcmd_kernel_irqfd *kirqfd =  in irqfd_wakeup()  local
905 		irqfd_inject(kirqfd);  in irqfd_wakeup()
909 		irqfd_deactivate(kirqfd);  in irqfd_wakeup()
919 	struct privcmd_kernel_irqfd *kirqfd =  in irqfd_poll_func()  local
922 	add_wait_queue_priority(wqh, &kirqfd->wait);  in irqfd_poll_func()
927 	struct privcmd_kernel_irqfd *kirqfd, *tmp;  in privcmd_irqfd_assign()  local
933 	kirqfd = kzalloc(sizeof(*kirqfd) + irqfd->size, GFP_KERNEL);  in privcmd_irqfd_assign()
934 	if (!kirqfd)  in privcmd_irqfd_assign()
936 	dm_op = kirqfd + 1;  in privcmd_irqfd_assign()
943 	kirqfd->xbufs.size = irqfd->size;  in privcmd_irqfd_assign()
944 	set_xen_guest_handle(kirqfd->xbufs.h, dm_op);  in privcmd_irqfd_assign()
945 	kirqfd->dom = irqfd->dom;  in privcmd_irqfd_assign()
946 	INIT_WORK(&kirqfd->shutdown, irqfd_shutdown);  in privcmd_irqfd_assign()
954 	kirqfd->eventfd = eventfd_ctx_fileget(f.file);  in privcmd_irqfd_assign()
955 	if (IS_ERR(kirqfd->eventfd)) {  in privcmd_irqfd_assign()
956 		ret = PTR_ERR(kirqfd->eventfd);  in privcmd_irqfd_assign()
964 	init_waitqueue_func_entry(&kirqfd->wait, irqfd_wakeup);  in privcmd_irqfd_assign()
965 	init_poll_funcptr(&kirqfd->pt, irqfd_poll_func);  in privcmd_irqfd_assign()
970 		if (kirqfd->eventfd == tmp->eventfd) {  in privcmd_irqfd_assign()
977 	list_add_tail(&kirqfd->list, &irqfds_list);  in privcmd_irqfd_assign()
984 	events = vfs_poll(f.file, &kirqfd->pt);  in privcmd_irqfd_assign()
986 		irqfd_inject(kirqfd);  in privcmd_irqfd_assign()
996 	eventfd_ctx_put(kirqfd->eventfd);  in privcmd_irqfd_assign()
1002 	kfree(kirqfd);  in privcmd_irqfd_assign()
1008 	struct privcmd_kernel_irqfd *kirqfd;  in privcmd_irqfd_deassign()  local
1017 	list_for_each_entry(kirqfd, &irqfds_list, list) {  in privcmd_irqfd_deassign()
1018 		if (kirqfd->eventfd == eventfd) {  in privcmd_irqfd_deassign()
1019 			irqfd_deactivate(kirqfd);  in privcmd_irqfd_deassign()
1071 	struct privcmd_kernel_irqfd *kirqfd, *tmp;  in privcmd_irqfd_exit()  local
1075 	list_for_each_entry_safe(kirqfd, tmp, &irqfds_list, list)  in privcmd_irqfd_exit()
1076 		irqfd_deactivate(kirqfd);  in privcmd_irqfd_exit()