On Tuesday 11 December 2012 20:53:19 Ming Lei wrote:

In fact, I have test data which can show a much power save
on OMAP3 based beagle board plus asix usbnet device with
the periodic work. IMO, the power save after introducing periodic
timer depends on the arch or platform, there should be much power
save if the CPU power consumption is very less. So how about letting
module parameter switch on/off the periodic work?

You could ask on linux-power and netdev. But there would be an
obvious question: Why kernel space?

	Regards
		Oliver