Hi... On Sat, Aug 27, 2011 at 22:23, Parmenides <mobile.parmenides@xxxxxxxxx> wrote: > I wonder how an interrupt handler work, and so try to make one by > myself. The first problem is which irq number should I select to hook > an interrupt handler on it. In terms of the following messages, I > think irq 0 can be adopted because the number of interrupts raised > remains 145 and does not increase any more. are you really sure? in my system (laptop with core duo cpu) it is increased by around 1000-2000 every 2 seconds and AFAIK it is using HPET. So maybe IMO free_irq() is causing your cpu referencing null instruction...that might be due to free_irq is not checking whether it is safe to delete a handler.... -- regards, Mulyadi Santosa Freelance Linux trainer and consultant blog: the-hydra.blogspot.com training: mulyaditraining.blogspot.com _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
