25 static int check_engine_ops(struct ioengine_ops *ops)  in check_engine_ops()  argument
27 	if (ops->version != FIO_IOOPS_VERSION) {  in check_engine_ops()
28 		log_err("bad ioops version %d (want %d)\n", ops->version,  in check_engine_ops()
33 	if (!ops->queue) {  in check_engine_ops()
34 		log_err("%s: no queue handler\n", ops->name);  in check_engine_ops()
41 	if (ops->flags & FIO_SYNCIO)  in check_engine_ops()
44 	if (!ops->event) {  in check_engine_ops()
45 		log_err("%s: no event handler\n", ops->name);  in check_engine_ops()
48 	if (!ops->getevents) {  in check_engine_ops()
49 		log_err("%s: no getevents handler\n", ops->name);  in check_engine_ops()
52 	if (!ops->queue) {  in check_engine_ops()
53 		log_err("%s: no queue handler\n", ops->name);  in check_engine_ops()
60 void unregister_ioengine(struct ioengine_ops *ops)  in unregister_ioengine()  argument
62 	dprint(FD_IO, "ioengine %s unregistered\n", ops->name);  in unregister_ioengine()
63 	flist_del(&ops->list);  in unregister_ioengine()
64 	INIT_FLIST_HEAD(&ops->list);  in unregister_ioengine()
67 void register_ioengine(struct ioengine_ops *ops)  in register_ioengine()  argument
69 	dprint(FD_IO, "ioengine %s registered\n", ops->name);  in register_ioengine()
70 	INIT_FLIST_HEAD(&ops->list);  in register_ioengine()
71 	flist_add_tail(&ops->list, &engine_list);  in register_ioengine()
76 	struct ioengine_ops *ops;  in find_ioengine()  local
80 		ops = flist_entry(entry, struct ioengine_ops, list);  in find_ioengine()
81 		if (!strcmp(name, ops->name))  in find_ioengine()
82 			return ops;  in find_ioengine()
91 	struct ioengine_ops *ops;  in dlopen_ioengine()  local
107 	ops = dlsym(dlhandle, engine_lib);  in dlopen_ioengine()
108 	if (!ops)  in dlopen_ioengine()
109 		ops = dlsym(dlhandle, "ioengine");  in dlopen_ioengine()
117 	if (!ops) {  in dlopen_ioengine()
121 			get_ioengine(&ops);  in dlopen_ioengine()
124 	if (!ops) {  in dlopen_ioengine()
130 	ops->dlhandle = dlhandle;  in dlopen_ioengine()
131 	return ops;  in dlopen_ioengine()
136 	struct ioengine_ops *ops, *ret;  in load_ioengine()  local
149 	ops = find_ioengine(engine);  in load_ioengine()
150 	if (!ops)  in load_ioengine()
151 		ops = dlopen_ioengine(td, name);  in load_ioengine()
153 	if (!ops) {  in load_ioengine()
161 	if (check_engine_ops(ops))  in load_ioengine()
165 	memcpy(ret, ops, sizeof(*ret));  in load_ioengine()