On Thu, Feb 26, 2026 at 12:42:39PM +0000, Tvrtko Ursulin wrote:
> 
> On 26/02/2026 10:56, Maxime Ripard wrote:
> > Hi Tvrtko,
> > 
> > On Tue, Feb 24, 2026 at 12:49:01PM +0000, Tvrtko Ursulin wrote:
> > > 
> > > On 24/02/2026 11:03, Maxime Ripard wrote:
> > > > Some DRM tests cross the 1s execution time threshold that defines a test
> > > > as slow. Let's flag them as such.
> > > 
> > > Curious that both did not trigger for me and I even run them under nested
> > > qemu most of the time.
> > > 
> > > > Signed-off-by: Maxime Ripard <[email protected]>
> > > > ---
> > > >    drivers/gpu/drm/scheduler/tests/tests_basic.c | 4 ++--
> > > >    drivers/gpu/drm/tests/drm_buddy_test.c        | 2 +-
> > > >    2 files changed, 3 insertions(+), 3 deletions(-)
> > > > 
> > > > diff --git a/drivers/gpu/drm/scheduler/tests/tests_basic.c 
> > > > b/drivers/gpu/drm/scheduler/tests/tests_basic.c
> > > > index 82a41a456b0a..a5a5a35a87b0 100644
> > > > --- a/drivers/gpu/drm/scheduler/tests/tests_basic.c
> > > > +++ b/drivers/gpu/drm/scheduler/tests/tests_basic.c
> > > > @@ -419,11 +419,11 @@ static void drm_sched_change_priority(struct 
> > > > kunit *test)
> > > >                 drm_mock_sched_entity_free(entity[i]);
> > > >    }
> > > >    static struct kunit_case drm_sched_priority_tests[] = {
> > > >         KUNIT_CASE(drm_sched_priorities),
> > > > -       KUNIT_CASE(drm_sched_change_priority),
> > > > +       KUNIT_CASE_SLOW(drm_sched_change_priority),
> > > 
> > > This one deliberately aims to run for ~1s and I don't have an immediate 
> > > idea
> > > how it would go over 2s.
> > 
> > 1s is the threshold for a slow test:
> > https://elixir.bootlin.com/linux/v6.19.3/source/lib/kunit/test.c#L365
> > 
> > It only warns about it if it crosses 2s, but if it's expected to take
> > 1s, it should be flagged as such still.
> 
> I know, just curious which environment managed to trigger the warning.
> Because I thought my test setup was the slowest one (nested virtualization -
> qemu-system inside vmware).

I was running a cross-compiled arm64 system on my x86 machine, so
emulated. That being said, that one didn't cross the 2s threshold
either.

Other tests did, and I used the occasion to flag every test that was
taking more than 1s.

> > > >         {}
> > > >    };
> > > >    static struct kunit_suite drm_sched_priority = {
> > > >         .name = "drm_sched_basic_priority_tests",
> > > > @@ -544,11 +544,11 @@ static void drm_sched_test_credits(struct kunit 
> > > > *test)
> > > >         drm_mock_sched_entity_free(entity);
> > > >         drm_mock_sched_fini(sched);
> > > >    }
> > > >    static struct kunit_case drm_sched_credits_tests[] = {
> > > > -       KUNIT_CASE(drm_sched_test_credits),
> > > > +       KUNIT_CASE_SLOW(drm_sched_test_credits),
> > > 
> > > Same really.
> > > 
> > > Anyway, the scheduler parts LGTM and I can follow up trying to optimise
> > > these two later.
> > > 
> > > For the scheduler:
> > > 
> > > Reviewed-by: Tvrtko Ursulin <[email protected]>
> > 
> > Thanks!
> 
> I have a patch already which makes those (and one more) test cases faster,
> but I will wait sending it until you merge this one.

Ack, thanks!
Maxime

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