/**
* struct hrtimer - the basic hrtimer structure
- *
* @node: red black tree node for time ordered insertion
* @expires: the absolute expiry time in the hrtimers internal
* representation. The time is related to the clock on
/**
* struct hrtimer_sleeper - simple sleeper structure
- *
* @timer: embedded timer structure
* @task: task to wake up
*
/**
* struct hrtimer_base - the timer base for a specific clock
- *
* @index: clock type index for per_cpu support when moving a timer
* to a base on another cpu.
* @lock: lock protecting the base and associated timers