Re: [PATCH linux-kselftest/test v2] lib/list-test: add a test for the 'list' doubly linked list

[Andrew Morton]

On Fri, 11 Oct 2019 14:37:25 -0700 David Gow <davidgow@xxxxxxxxxx> wrote:

> On Fri, Oct 11, 2019 at 2:05 PM Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote:
> >
> > <looks at kunit>
> >
> > Given that everything runs at late_initcall time, shouldn't everything
> > be __init, __initdata etc so all the code and data doesn't hang around
> > for ever?
> >
> 
> That's an interesting point. We haven't done this for KUnit tests to
> date, and there is certainly a possibility down the line that we may
> want to be able to run these tests in other circumstances. (There's
> some work being done to allow KUnit and KUnit tests to be built as
> modules here: https://lkml.org/lkml/2019/10/8/628 for example.) Maybe
> it'd be worth having macros which wrap __init/__initdata etc as a way
> of futureproofing tests against such a change?
> 
> Either way, I suspect this is something that should probably be
> considered for KUnit as a whole, rather than on a test-by-test basis.

Sure, a new set of macros for this makes sense.  Can be retrofitted any
time.

There might be a way of loading all of list_test.o into a discardable
section at link time instead of sprinkling annotation all over the .c
code.