Changing Kernel thread priorities

[Monica Puig-Pey]

I am writing a driver which has one kernel thread associated with it.
I want to change the priority of this thread, so that I can specify the 
order in which it is scheduled following an interrupt.
I'm using:

 sched_setscheduler(struct task_struct *, int, struct sched_param *);

but it doesn't work. I tried to change the priority from the 
init_module, and also from the Kernel Thread, but there is no way.

Kernel version is 2.6.31-11-rt

What do I call to change a kernel thread priority?

Thanks you very much

Mónica

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