-void class_observe_import(struct obd_import *imp, obd_import_callback cb,
- void *cb_data);
-void class_unobserve_import(struct obd_import *imp, obd_import_callback cb,
- void *cb_data);
-void class_notify_import_observers(struct obd_import *imp, int event,
- void *event_arg);
+/* import.c */
+static inline unsigned int at_est2timeout(unsigned int val)
+{
+ /* add an arbitrary minimum: 125% +5 sec */
+ return (val + (val >> 2) + 5);
+}
+
+static inline unsigned int at_timeout2est(unsigned int val)
+{
+ /* restore estimate value from timeout: e=4/5(t-5) */
+ LASSERT(val);
+ return (max((val << 2) / 5, 5U) - 4);
+}
+
+static inline void at_reset_nolock(struct adaptive_timeout *at, int val)
+{
+ at->at_current = val;
+ at->at_worst_ever = val;
+ at->at_worst_time = cfs_time_current_sec();
+}
+
+static inline void at_reset(struct adaptive_timeout *at, int val)
+{
+ spin_lock(&at->at_lock);
+ at_reset_nolock(at, val);
+ spin_unlock(&at->at_lock);
+}
+
+static inline void at_init(struct adaptive_timeout *at, int val, int flags) {
+ memset(at, 0, sizeof(*at));
+ spin_lock_init(&at->at_lock);
+ at->at_flags = flags;
+ at_reset(at, val);
+}
+
+static inline void at_reinit(struct adaptive_timeout *at, int val, int flags)
+{
+ spin_lock(&at->at_lock);
+ at->at_binstart = 0;
+ memset(at->at_hist, 0, sizeof(at->at_hist));
+ at->at_flags = flags;
+ at_reset_nolock(at, val);
+ spin_unlock(&at->at_lock);
+}
+
+extern unsigned int at_min;
+static inline int at_get(struct adaptive_timeout *at) {
+ return (at->at_current > at_min) ? at->at_current : at_min;
+}
+int at_measured(struct adaptive_timeout *at, unsigned int val);
+int import_at_get_index(struct obd_import *imp, int portal);
+extern unsigned int at_max;
+#define AT_OFF (at_max == 0)