Re: [PATCH v4 00/15] kunit: Introduce UAPI testing framework

["Thomas Weißschuh" <thomas.weissschuh@linutronix.de>]

On Mon, Jul 07, 2025 at 12:18:01PM -0600, Jonathan Corbet wrote:
> Thomas Weißschuh <thomas.weissschuh@linutronix.de> writes:
> 
> > This series aims to combine kselftests and kunit, avoiding both their
> > limitations. It works by compiling the userspace kselftests as part of
> > the regular kernel build, embedding them into the kunit kernel or module
> > and executing them from there.
> 
> Please forgive the possibly dumb question but ... this series sets up
> the framework, but doesn't actually integrate the kselftests, right?

Correct.

> Will it be necessary to write a little KUnit glue function for each
> kselftest, or is there some other scheme in mind here?

With the current framework it is necessary to write some glue code:
* A stub .c file which #includes the existing kselftest source
* A kbuild userprog Makefile
* A custom KUnit function which calls kunit_uapi_run_kselftest()

A more high-level scheme may come later, but so far I have not worked on that.
It would be nice for example to build and run the tests for all ABIs supported
by a kernel without a lot of manual code duplication.
And maybe have some higher level helpers around declaring the tests.


Thomas