linux-kernel - Re: [PATCH 4/9] kcsan: test: Update parameter generator to new signature

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Message-ID: <CANpmjNMkcZaZ_dbXdd40dHrD3Wo2muv14ojmz4diwLG68LiFyQ@mail.gmail.com>
Date: Thu, 7 Aug 2025 13:11:10 +0200
From: Marco Elver <elver@...gle.com>
To: David Gow <davidgow@...gle.com>
Cc: Marie Zhussupova <marievic@...gle.com>, rmoar@...gle.com, shuah@...nel.org, 
	brendan.higgins@...ux.dev, dvyukov@...gle.com, lucas.demarchi@...el.com, 
	thomas.hellstrom@...ux.intel.com, rodrigo.vivi@...el.com, 
	linux-kselftest@...r.kernel.org, kunit-dev@...glegroups.com, 
	kasan-dev@...glegroups.com, intel-xe@...ts.freedesktop.org, 
	dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/9] kcsan: test: Update parameter generator to new signature

On Sat, 2 Aug 2025 at 11:45, David Gow <davidgow@...gle.com> wrote:
>
> On Wed, 30 Jul 2025 at 03:37, Marie Zhussupova <marievic@...gle.com> wrote:
> >
> > This patch modifies `nthreads_gen_params` in kcsan_test.c
> > to accept an additional `struct kunit *test` argument.
> >
> > Signed-off-by: Marie Zhussupova <marievic@...gle.com>
> > ---
>
> This is a pretty straightforward fix after patch 3. KCSAN folks, would
> you prefer this kept as a separate patch, or squashed into the
> previous one (so there's no commit where this is broken)?

Normally patch series should be structured so that bisection does not
break. Having this fixup as a separate patch means that bisections
where the KCSAN test is enabled will break.

This is a tiny change, so I'd just squash it.


> Either way,
> Reviewed-by: David Gow <davidgow@...gle.com>
>
>
> -- David
>
> >  kernel/kcsan/kcsan_test.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/kernel/kcsan/kcsan_test.c b/kernel/kcsan/kcsan_test.c
> > index c2871180edcc..fc76648525ac 100644
> > --- a/kernel/kcsan/kcsan_test.c
> > +++ b/kernel/kcsan/kcsan_test.c
> > @@ -1383,7 +1383,7 @@ static void test_atomic_builtins_missing_barrier(struct kunit *test)
> >   * The thread counts are chosen to cover potentially interesting boundaries and
> >   * corner cases (2 to 5), and then stress the system with larger counts.
> >   */
> > -static const void *nthreads_gen_params(const void *prev, char *desc)
> > +static const void *nthreads_gen_params(struct kunit *test, const void *prev, char *desc)
> >  {
> >         long nthreads = (long)prev;
> >
> > --
> > 2.50.1.552.g942d659e1b-goog
> >