-/**
- * Register a timeout callback to the pinger list, and the callback will
- * be called when timeout happens.
- */
-static struct timeout_item *ptlrpc_new_timeout(time64_t time,
- enum timeout_event event,
- timeout_cb_t cb, void *data)
-{
- struct timeout_item *ti;
-
- OBD_ALLOC_PTR(ti);
- if (!ti)
- return NULL;
-
- INIT_LIST_HEAD(&ti->ti_obd_list);
- INIT_LIST_HEAD(&ti->ti_chain);
- ti->ti_timeout = time;
- ti->ti_event = event;
- ti->ti_cb = cb;
- ti->ti_cb_data = data;
-
- return ti;
-}
-
-/**
- * Register timeout event on the the pinger thread.
- * Note: the timeout list is an sorted list with increased timeout value.
- */
-static struct timeout_item*
-ptlrpc_pinger_register_timeout(time64_t time, enum timeout_event event,
- timeout_cb_t cb, void *data)
-{
- struct timeout_item *item, *tmp;
-
- LASSERT(mutex_is_locked(&pinger_mutex));
-
- list_for_each_entry(item, &timeout_list, ti_chain)
- if (item->ti_event == event)
- goto out;
-
- item = ptlrpc_new_timeout(time, event, cb, data);
- if (item) {
- list_for_each_entry_reverse(tmp, &timeout_list, ti_chain) {
- if (tmp->ti_timeout < time) {
- list_add(&item->ti_chain, &tmp->ti_chain);
- goto out;
- }
- }
- list_add(&item->ti_chain, &timeout_list);
- }
-out:
- return item;
-}
-
-/* Add a client_obd to the timeout event list, when timeout(@time)
- * happens, the callback(@cb) will be called.
- */
-int ptlrpc_add_timeout_client(time64_t time, enum timeout_event event,
- timeout_cb_t cb, void *data,
- struct list_head *obd_list)
-{
- struct timeout_item *ti;
-
- mutex_lock(&pinger_mutex);
- ti = ptlrpc_pinger_register_timeout(time, event, cb, data);
- if (!ti) {
- mutex_unlock(&pinger_mutex);
- return -EINVAL;
- }
- list_add(obd_list, &ti->ti_obd_list);
- mutex_unlock(&pinger_mutex);
- return 0;
-}
-EXPORT_SYMBOL(ptlrpc_add_timeout_client);
-
-int ptlrpc_del_timeout_client(struct list_head *obd_list,
- enum timeout_event event)
-{
- struct timeout_item *ti = NULL, *item;
-
- if (list_empty(obd_list))
- return 0;
- mutex_lock(&pinger_mutex);
- list_del_init(obd_list);
- /**
- * If there are no obd attached to the timeout event
- * list, remove this timeout event from the pinger
- */
- list_for_each_entry(item, &timeout_list, ti_chain) {
- if (item->ti_event == event) {
- ti = item;
- break;
- }
- }
- LASSERTF(ti, "ti is NULL !\n");
- if (list_empty(&ti->ti_obd_list)) {
- list_del(&ti->ti_chain);
- OBD_FREE_PTR(ti);
- }
- mutex_unlock(&pinger_mutex);
- return 0;
-}
-EXPORT_SYMBOL(ptlrpc_del_timeout_client);
-
-int ptlrpc_pinger_remove_timeouts(void)
-{
- struct timeout_item *item, *tmp;
-
- mutex_lock(&pinger_mutex);
- list_for_each_entry_safe(item, tmp, &timeout_list, ti_chain) {
- LASSERT(list_empty(&item->ti_obd_list));
- list_del(&item->ti_chain);
- OBD_FREE_PTR(item);
- }
- mutex_unlock(&pinger_mutex);
- return 0;
-}
-