On Thursday 13 November 2014 11:52:48 Alexander Stein wrote:

On Thursday 13 November 2014 11:47:13, Arnd Bergmann wrote:

quoted

Regarding your initial use case of testing interrupt polarity, would
you have been able to do the same thing by looking at the interrupt
count in /proc/interrupts?

This is only possible if some driver actually requests this interrupt, no?

Yes, I think that is correct, at least with sparseirq, which is now the
default. For interrupts that are mapped by the irqchip, you can look
up the number of spurious interrupts in /proc/irq/<nr>/spurious.

	Arnd