linux-kernel - Re: [PATCH v12 12/18] kunit: test: add tests for KUnit managed resources

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Message-ID: <CAFd5g44Es4emKyQSxUkqckGJ02_o3sAcDLwUCW8ZFGX14j5=xg@mail.gmail.com>
Date:   Tue, 13 Aug 2019 00:57:33 -0700
From:   Brendan Higgins <brendanhiggins@...gle.com>
To:     Stephen Boyd <sboyd@...nel.org>
Cc:     Frank Rowand <frowand.list@...il.com>,
        Greg KH <gregkh@...uxfoundation.org>,
        Josh Poimboeuf <jpoimboe@...hat.com>,
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        Peter Zijlstra <peterz@...radead.org>,
        Rob Herring <robh@...nel.org>, shuah <shuah@...nel.org>,
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        Masahiro Yamada <yamada.masahiro@...ionext.com>,
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        Avinash Kondareddy <akndr41@...il.com>
Subject: Re: [PATCH v12 12/18] kunit: test: add tests for KUnit managed resources

On Mon, Aug 12, 2019 at 9:31 PM Stephen Boyd <sboyd@...nel.org> wrote:
>
> Quoting Brendan Higgins (2019-08-12 11:24:15)
> > +
> > +static int kunit_resource_test_init(struct kunit *test)
> > +{
> > +       struct kunit_test_resource_context *ctx =
> > +                       kzalloc(sizeof(*ctx), GFP_KERNEL);
> > +
> > +       if (!ctx)
> > +               return -ENOMEM;
>
> Should this use the test assertion logic to make sure that it's not
> failing allocations during init?

Yep. Will fix.

> BTW, maybe kunit allocation APIs should
> fail the test if they fail to allocate in general. Unless we're unit
> testing failure to allocate problems.

Yeah, I thought about that. I wasn't sure how people would feel about
it, and I thought it would be a pain to tease out all the issues
arising from aborting in different contexts when someone might not
expect it.

I am thinking later we can have kunit_kmalloc_or_abort variants? And
then we can punt this issue to a later time?

> > +
> > +       test->priv = ctx;
> > +
> > +       kunit_init_test(&ctx->test, "test_test_context");
> > +
> > +       return 0;