Description of problem: IRQ threads in the RT kernel are created when a driver registers an interrupt and are killed when the interrupt is unregistered. This means that if a module is reloaded, a new IRQ thread will be created, with it's default priority, as opposed to the desired priority specified in /etc/rtgroups. We need a mechanism to catch IRQ thread creation and re-run rtcl to adjust thread priorities.
same topic *** This bug has been marked as a duplicate of bug 466929 ***