linux-kernel - Re: [PATCH v5 1/5] bug/kunit: Core support for suppressing warning backtraces

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Message-ID: <20250603122603.GK21197@noisy.programming.kicks-ass.net>
Date: Tue, 3 Jun 2025 14:26:03 +0200
From: Peter Zijlstra <peterz@...radead.org>
To: Maxime Ripard <mripard@...nel.org>
Cc: Kees Cook <kees@...nel.org>, Alessandro Carminati <acarmina@...hat.com>,
	linux-kselftest@...r.kernel.org,
	Dan Carpenter <dan.carpenter@...aro.org>,
	Daniel Diaz <daniel.diaz@...aro.org>,
	David Gow <davidgow@...gle.com>,
	Arthur Grillo <arthurgrillo@...eup.net>,
	Brendan Higgins <brendan.higgins@...ux.dev>,
	Naresh Kamboju <naresh.kamboju@...aro.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Ville Syrjala <ville.syrjala@...ux.intel.com>,
	Daniel Vetter <daniel@...ll.ch>, Guenter Roeck <linux@...ck-us.net>,
	Alessandro Carminati <alessandro.carminati@...il.com>,
	Jani Nikula <jani.nikula@...el.com>,
	Jeff Johnson <jeff.johnson@....qualcomm.com>,
	Josh Poimboeuf <jpoimboe@...nel.org>,
	Shuah Khan <skhan@...uxfoundation.org>,
	Linux Kernel Functional Testing <lkft@...aro.org>,
	dri-devel@...ts.freedesktop.org, kunit-dev@...glegroups.com,
	linux-kernel@...r.kernel.org, Mark Rutland <mark.rutland@....com>
Subject: Re: [PATCH v5 1/5] bug/kunit: Core support for suppressing warning
 backtraces

On Mon, Jun 02, 2025 at 01:13:29PM +0200, Maxime Ripard wrote:

> > I can't operate kunit
> 
> Why not?

Too complicated. People have even wrecked tools/testing/selftests/ to
the point that it is now nearly impossible to run the simple selftests
:-(

And while I don't mind tests -- they're quite useful. Kunit just looks
to make it all more complicated that it needs to be. Not to mention
there seems to be snakes involved -- and I never can remember how that
works.

Basically, if the stuff takes more effort to make run, than the time it
runs for, its a loss. And in that respect much of the kernel testing
stuff is a fail. Just too damn hard to make work.

I want to: make; ./run.sh or something similarly trivial. But clearly
that is too much to task these days :-(

I spent almost a full day trying to get kvm selftests working a couple
of weeks ago; that's time I don't have. And it makes me want to go hulk
and smash things.