I am currently writting a device driver for a custom piece of hardware.
The device needs to be serviced _very_ regularly, possibly upto 768 times
a second. I currently use request_irq to register my interrupt handler, but
am considering changing to irqaction, because the khg says its faster.
However, none of the device drivers in the current distribution of linux
use irqaction. Is there is a reason for not using it?
One the same topic does anyone know offhand, which registers aren't allowed
to be used when servicing irqactions?
thanks in advance,
"Having abandoned my search for truth, I am now looking for a good fantasy"