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Old 05-29-2013, 07:02 AM   #1
hello13
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Registered: Mar 2013
Posts: 5

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linux doesn't call scheduler after interrupt and set task need resch flag


Hello,

In a linux task I am generating interrupts for each memory request it is doing. When the interrupt is called I am doing the following in the interrupt handler:

1 dequeue the task
2 Set the task state to TASK_UNINTERRUPTIBLE.
3 call set_tsk_need_resch for this task.

After the interrupt handler completes I expect that another task is going to run, but instead
this task still generates printk's that I print in the task itself because it is still running.
I think there are no semaphores holded by the task.
What can be the problem why it is still running?

---------- Post added 05-29-13 at 06:03 AM ----------

By the way, the values are set are set correct.
 
  


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