1·When the module is unloaded, the tasklet_kill function is called to ensure that the tasklet is not in a schedulable state.
当该模块被卸载，函数tasklet _ kill将被调用来保证微线程不处于可调度状态。
2·Optimization design of common navigation functions is one of the important methods to guarantee task set schedulable and reduce receiver's power consumption.
优化设计常用的导航函数是保障任务集可调度、降低接收机功耗的重要手段。