Re: [PATCH v2 00/17] kunit: introduce KUnit, the Linux kernel unit testing framework

From: Theodore Ts'o
Date: Sat May 11 2019 - 13:37:13 EST

On Fri, May 10, 2019 at 02:12:40PM -0700, Frank Rowand wrote:
> However, the reply is incorrect. Kselftest in-kernel tests (which
> is the context here) can be configured as built in instead of as
> a module, and built in a UML kernel. The UML kernel can boot,
> running the in-kernel tests before UML attempts to invoke the
> init process.

Um, Citation needed?

I don't see any evidence for this in the kselftest documentation, nor
do I see any evidence of this in the kselftest Makefiles.

There exists test modules in the kernel that run before the init
scripts run --- but that's not strictly speaking part of kselftests,
and do not have any kind of infrastructure. As noted, the
kselftests_harness header file fundamentally assumes that you are
running test code in userspace.

- Ted