I am trying to write a simple handler for interrupts from a GPIO port. I have never tried to register an IRQ before, but see discussions on using request_irq and request_threaded_irq, but I cannot find header files containing these on my CentOS7 or Ubuntu 16.04 systems. Sample code I have seen include linux/irq.h and linux/interrupt.h but neither appear on my system. Do I need to install additional packages (RPMs etc) to use these? I have tried searching for such a package for either CentOS or Ubuntu but have not found one.
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I think I have found the answer to my question. I need to install the package linux-headers-generic (or one specific to my kernel version). I think it includes the headers that I need and I will need it anyway if I write a kernel module.
Terry L Anderson
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