Re: [PATCH] clk: explicitly disable CONFIG_UML_PCI_OVER_VIRTIO in .kunitconfig

[Daniel Latypov]

On Tue, Jul 26, 2022 at 1:07 PM Stephen Boyd <sboyd@xxxxxxxxxx> wrote:

> > The other option of using function redirection on the io read()
> > write() functions exists, and would be a bit simpler in the
> > short-term, but would probably result in a lot of tests reimplementing
> > this, and also would have some performance impacts, as the I/O
> > accesses wouldn't be able to be inlined if KUNIT is enabled.
> >
>
> That sounds OK to me because nobody is enabling KUNIT in production,
> right?

You'd think so, but...

Android GKI [1] is enabling it. I had thought as =m, but maybe it was =y.
I can't find a good link for it now, but e.g. here's a patch they're
carrying to prevent KUnit from running built-in tests [2]

They could just carry another patch if we go down this route, but it
goes to show that there might be others out there w/ reasons to do
this.

[1] https://source.android.com/devices/architecture/kernel/generic-kernel-image
[2] https://android.googlesource.com/kernel/common-patches/+/refs/heads/master/android-mainline/ANDROID-GKI-Disable-KUnit-built-in-testing.patch