Re: [4.3] kworker busy in pm_runtime_work

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On Mon, 16 Nov 2015, Daniel J Blueman wrote:

> Tuning USB suspend [1] in 4.3 on a Dell XPS 15 9553 (Skylake), I see a
> kworker thread spinning in rpm_suspend [2].
> 
> What is the most useful debug to get here beyond the immediate [3]?

You can try doing:

	echo 'module usbcore =p' >/sys/kernel/debug/dynamic_debug/control

Alan Stern

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