linux-kernel - Re: [RFC v1 1/2] crypto: tcrypt: minimal conversion to run under KUnit

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Date:   Fri, 30 Jul 2021 13:33:46 +0800
From:   David Gow <davidgow@...gle.com>
To:     Herbert Xu <herbert@...dor.apana.org.au>
Cc:     Daniel Latypov <dlatypov@...gle.com>, davem@...emloft.net,
        linux-crypto@...r.kernel.org,
        Brendan Higgins <brendanhiggins@...gle.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        KUnit Development <kunit-dev@...glegroups.com>
Subject: Re: [RFC v1 1/2] crypto: tcrypt: minimal conversion to run under KUnit

On Fri, Jul 30, 2021 at 10:55 AM Herbert Xu <herbert@...dor.apana.org.au> wrote:
>
> On Fri, Jul 23, 2021 at 12:31:28PM -0700, Daniel Latypov wrote:
> >
> > Thanks, that makes a lot of sense.
> > In that case, how useful would `kunit.py run` be? I.e. Do people
> > mostly want to see numbers on bare metal?
>
> I think it's a mix of both.  As in performance on bare metal and
> under virtualisation may be of interest.  I don't think you're going
> to be going through kunit for the speed tests though, because you
> need to supply module parameters for tcrypt to do that.

FYI, there is a patch for kunit_tool which will allow kernel
parameters to be passed through:
https://patchwork.kernel.org/project/linux-kselftest/patch/20210715160819.1107685-1-dlatypov@google.com/

That being said, no-one's ever used any of the KUnit tooling for
performance testing before, as far as I know, so whether or not it
turns out to be useful or not remains to be seen. With this patch,
it'd at least be an option if you wanted to try it.

-- David