Hi Alain, On 21. Jan 2020, at 20.25, Alain Michaud <alainmichaud@xxxxxxxxxx> wrote: > I'm not familiar with the dynamic_debug feature. > > On ChromiumOS, the interface proposed here is used by the user > feedback system to allow the collection of BT_DBG output when the user > is trying to send us feedback. If there is a better way to do this, > we can certainly use that. but may need to be pointed in the right > direction. I think Marcel is referring to this: https://www.kernel.org/doc/html/latest/admin-guide/dynamic-debug-howto.html Johan