title: How to run hrtimer handler in softirq context?
body: <p>I have found this tutorial about hrtimer:
  <a href="http://www.ibm.com/developerworks/linux/library/l-timers-list/" rel="nofollow">http://www.ibm.com/developerworks/linux/library/l-timers-list/</a></p>
  
  <p>I believe the way it uses will run the callback handler in hardirq context,right? But it also said "<strong>One interesting aspect is the ability to define the execution context of the callback function (such as in softirq or hardiirq context)</strong>"</p>
  
  <p>I have checked the hrtimer.h file but it's really not that intuitive. Does anyone know how to run it in softirq context? Is it similiar to run it in hardirq?</p>
  
  <p>Thanks,</p>