Re: [PATCH v2 0/2] make POSIX timers optional

On Tue, 20 Sep 2016 23:09:52 +0200 (CEST), Thomas Gleixner wrote:

Now if you want to distangle PTP from a driver then you split it at the
driver level and not at the PTP level:

      	  DRIVER_X
	  tristate "Driver X"

	  DRIVER_X_PTP
	  bool "Enable PTP support"
	  default y if !MAKE_IT_TINY
	  depends on DRIVER_X
	  select PTP

Ouch. So, after the hassle to remove the VXLAN and GENEVE configs from
tons of drivers, we'll add another one instead? That's just silly. If
we did this for every thing we support in NICs, we would end up with
something completely unmanageable.

PTP should be really configured by a single switch.

Btw., your suggestion does not work, select is not recursive.

We have already drivers following that scheme. That way you make the PTP
support in the driver conditional on DRIVER_X_PTP and have no hassle with
modules and dependencies.

We've recently got rid of some of those, thankfully. Caused more harm
than good.

 Jiri