Re: CONFIG_DEBUG_TEST_DRIVER_REMOVE needs a warning

[Laura Abbott]

On 10/06/2016 09:06 PM, Rob Herring wrote:
> On Thu, Oct 6, 2016 at 6:53 PM, Laura Abbott <labbott@xxxxxxxxxx> wrote:
> > On a whim, I decided to turn on CONFIG_DEBUG_TEST_DRIVER_REMOVE on
> > Fedora rawhide since it sounded harmless enough. It spewed warnings
> > and panicked some systems. Clearly it's  doing its job
> > well of finding drivers that can't handle remove properly and I
> > underestimated it. I was expecting to maybe find a driver or two.
> > Can we get stronger Kconfig text indicating that this shouldn't be
> > turned on lightly? I'll be turning the option off in Fedora but sending
> > out reports from what was found.
>
> It hides behind CONFIG_DEBUG already. Is there a better option that
> distros won't turn on?

For Fedora rawhide, we tend to turn on debug options that don't have
a significant performance impact to hopefully make the kernel better
for Fedora stable releases. Apart from a more explicit Kconfig text,
you could hide it behind CONFIG_EXPERT which Fedora doesn't turn on
and is more of a hint that this should only be used in specific
circumstances.

> Rob

Thanks,
Laura