28 static inline void dm_iot_init(struct dm_io_tracker *iot)  in dm_iot_init()  argument
30 	spin_lock_init(&iot->lock);  in dm_iot_init()
31 	iot->in_flight = 0ul;  in dm_iot_init()
32 	iot->idle_time = 0ul;  in dm_iot_init()
33 	iot->last_update_time = jiffies;  in dm_iot_init()
36 static inline bool dm_iot_idle_for(struct dm_io_tracker *iot, unsigned long j)  in dm_iot_idle_for()  argument
40 	spin_lock_irq(&iot->lock);  in dm_iot_idle_for()
41 	if (!iot->in_flight)  in dm_iot_idle_for()
42 		r = time_after(jiffies, iot->idle_time + j);  in dm_iot_idle_for()
43 	spin_unlock_irq(&iot->lock);  in dm_iot_idle_for()
48 static inline unsigned long dm_iot_idle_time(struct dm_io_tracker *iot)  in dm_iot_idle_time()  argument
52 	spin_lock_irq(&iot->lock);  in dm_iot_idle_time()
53 	if (!iot->in_flight)  in dm_iot_idle_time()
54 		r = jiffies - iot->idle_time;  in dm_iot_idle_time()
55 	spin_unlock_irq(&iot->lock);  in dm_iot_idle_time()
60 static inline void dm_iot_io_begin(struct dm_io_tracker *iot, sector_t len)  in dm_iot_io_begin()  argument
62 	spin_lock_irq(&iot->lock);  in dm_iot_io_begin()
63 	iot->in_flight += len;  in dm_iot_io_begin()
64 	spin_unlock_irq(&iot->lock);  in dm_iot_io_begin()
67 static inline void dm_iot_io_end(struct dm_io_tracker *iot, sector_t len)  in dm_iot_io_end()  argument
74 	spin_lock_irqsave(&iot->lock, flags);  in dm_iot_io_end()
75 	iot->in_flight -= len;  in dm_iot_io_end()
76 	if (!iot->in_flight)  in dm_iot_io_end()
77 		iot->idle_time = jiffies;  in dm_iot_io_end()
78 	spin_unlock_irqrestore(&iot->lock, flags);  in dm_iot_io_end()