linux-kernel - Re: [PATCH 3/6] lib: Move KUnit tests into tests/ subdirectory

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Message-ID: <ZwkuvKogPuik90fN@smile.fi.intel.com>
Date: Fri, 11 Oct 2024 16:57:16 +0300
From: Andy Shevchenko <andy@...nel.org>
To: Geert Uytterhoeven <geert@...ux-m68k.org>
Cc: David Gow <davidgow@...gle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Shuah Khan <skhan@...uxfoundation.org>,
	Brendan Higgins <brendanhiggins@...gle.com>,
	Rae Moar <rmoar@...gle.com>, Kees Cook <kees@...nel.org>,
	linux-kselftest@...r.kernel.org, kunit-dev@...glegroups.com,
	linux-kernel@...r.kernel.org,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	Yury Norov <yury.norov@...il.com>,
	Rasmus Villemoes <linux@...musvillemoes.dk>,
	"Jason A . Donenfeld" <Jason@...c4.com>,
	"Naveen N . Rao" <naveen.n.rao@...ux.ibm.com>,
	Anil S Keshavamurthy <anil.s.keshavamurthy@...el.com>,
	"David S . Miller" <davem@...emloft.net>,
	Masami Hiramatsu <mhiramat@...nel.org>,
	Mark Brown <broonie@...nel.org>, linux-hardening@...r.kernel.org,
	linux-trace-kernel@...r.kernel.org,
	Palmer Dabbelt <palmer@...osinc.com>,
	Christophe Leroy <christophe.leroy@...roup.eu>,
	Charlie Jenkins <charlie@...osinc.com>,
	Simon Horman <horms@...nel.org>, Jakub Kicinski <kuba@...nel.org>,
	Arnd Bergmann <arnd@...db.de>, Daniel Latypov <dlatypov@...gle.com>,
	Guenter Roeck <linux@...ck-us.net>,
	David Howells <dhowells@...hat.com>,
	Mickaël Salaün <mic@...ikod.net>,
	Marco Elver <elver@...gle.com>, Mark Rutland <mark.rutland@....com>,
	"Gustavo A. R. Silva" <gustavoars@...nel.org>,
	Vlastimil Babka <vbabka@...e.cz>,
	Nathan Chancellor <nathan@...nel.org>,
	Fangrui Song <maskray@...gle.com>,
	"Steven Rostedt (Google)" <rostedt@...dmis.org>
Subject: Re: [PATCH 3/6] lib: Move KUnit tests into tests/ subdirectory

On Fri, Oct 11, 2024 at 03:38:00PM +0200, Geert Uytterhoeven wrote:
> Hi Andy,
> 
> On Fri, Oct 11, 2024 at 12:44 PM Andy Shevchenko <andy@...nel.org> wrote:
> > On Fri, Oct 11, 2024 at 03:25:07PM +0800, David Gow wrote:
> > > From: Kees Cook <kees@...nel.org>
> > >
> > > Following from the recent KUnit file naming discussion[1], move all
> > > KUnit tests in lib/ into lib/tests/.
> > >
> > > Link: https://lore.kernel.org/lkml/20240720165441.it.320-kees@kernel.org/ [1]
> > > Signed-off-by: Kees Cook <kees@...nel.org>
> > > Acked-by: "Steven Rostedt (Google)" <rostedt@...dmis.org>
> > > Acked-by: Jakub Kicinski <kuba@...nel.org>
> > > Acked-by: "Masami Hiramatsu (Google)" <mhiramat@...nel.org>
> > > Reviewed-by: David Gow <davidgow@...gle.com>
> > > [Rebased onto mm-nonmm-unstable, moved usercopy_kunit]
> > > Signed-off-by: David Gow <davidgow@...gle.com>
> >
> > >  rename lib/{ => tests}/bitfield_kunit.c (100%)
> > >  rename lib/{ => tests}/checksum_kunit.c (100%)
> > >  rename lib/{ => tests}/cmdline_kunit.c (100%)
> > >  rename lib/{ => tests}/cpumask_kunit.c (100%)
> > >  rename lib/{ => tests}/fortify_kunit.c (100%)
> > >  rename lib/{ => tests}/hashtable_test.c (100%)
> > >  rename lib/{ => tests}/is_signed_type_kunit.c (100%)
> > >  rename lib/{ => tests}/kunit_iov_iter.c (100%)
> > >  rename lib/{ => tests}/list-test.c (100%)
> > >  rename lib/{ => tests}/memcpy_kunit.c (100%)
> > >  rename lib/{ => tests}/overflow_kunit.c (100%)
> > >  rename lib/{ => tests}/siphash_kunit.c (100%)
> > >  rename lib/{ => tests}/slub_kunit.c (100%)
> > >  rename lib/{ => tests}/stackinit_kunit.c (100%)
> > >  rename lib/{ => tests}/string_helpers_kunit.c (100%)
> > >  rename lib/{ => tests}/string_kunit.c (100%)
> > >  rename lib/{ => tests}/test_bits.c (100%)
> > >  rename lib/{ => tests}/test_fprobe.c (100%)
> > >  rename lib/{ => tests}/test_hash.c (100%)
> > >  rename lib/{ => tests}/test_kprobes.c (100%)
> > >  rename lib/{ => tests}/test_linear_ranges.c (100%)
> > >  rename lib/{ => tests}/test_list_sort.c (100%)
> > >  rename lib/{ => tests}/test_sort.c (100%)
> > >  rename lib/{ => tests}/usercopy_kunit.c (100%)
> >
> > While I support the idea, I think this adds an additional churn in creating a
> > duplicate 'test' in the filenames. Why they all can't be cut while removing?
> > (at least this question is not answered in the commit message)
> 
> To avoid duplicate *.ko file names?

With what? Sorry, but I don't see how it's a problem. These are test cases.
Do they use kernel command line parameters? If so, shouldn't KUnit take care
about it in a more proper way?

-- 
With Best Regards,
Andy Shevchenko