What's the relationship between Linux driver running priority and FIFO policy?

[Zhang, Yongchao (GE Healthcare)]

Hi
  I have a question disturb me very much.
  You know linux FIFO policy is common,and also there are many drivers
running in system,so
  which level are these drivers running on? If I have a progrom which
priority is FIFO99, does it disturb the driver running?
  I want know which level does drivers running on? For example, driver
running on FIFOXX? and how does linux schedule on this 
  case?
 
Thanks!
Best Regards!
 
---------------------------
ZhangYongChao
2010.07.01
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