nit: In drm/sched, we start with an upper case -> "drm/sched: Stop […]"
On Fri, 2025-01-24 at 13:46 +0200, Jani Nikula wrote:
> On Thu, 23 Jan 2025, Simona Vetter <simona.vet...@ffwll.ch> wrote:
> > On Thu, Jan 23, 2025 at 05:09:10PM +0200, Jani Nikula wrote:
> > > The expectation is that the struct drm_device based logging
> > > helpers get
> > > passed an actual struct drm_device pointer rather than some
> > > random
> > > struct pointer where you can dereference the ->dev member.
> > >
> > > Convert drm_err(sched, ...) to dev_err(sched->dev, ...) and
> > > similar. This matches current usage, as struct drm_device is not
> > > available, but drops "[drm]" or "[drm] *ERROR*" prefix from
> > > logging.
> > >
> > > Unfortunately, there's no dev_WARN_ON(), so the conversion is not
> > > exactly the same.
> > >
> > > Signed-off-by: Jani Nikula <jani.nik...@intel.com>
> >
> > For the two previous patches just dev_ makes sense since they're
> > just
> > platform drivers, but for drm/sched I wonder whether it wouldn't be
> > better
> > to switch from struct device * to struct drm_device * instead. I
> > guess
> > might be best to leave that decision to scheduler folks.
>
> I had a very brief look, and it seemed like struct drm_device isn't
> passed around in sched. If use of struct drm_device is preferred, I'm
> not the best person to figure out how to do that.
The @dev field in drm_sched_init() is only ever used for debug prints.
If we want to improve those prints further and we need a drm_dev for
that, I'd say we can implement that ourselves once the need arises.
> But the abuse of the
> drm_err() and friends macros needs to stop.
>
> > Anyway on the series and with that caveat:
> >
> > Reviewed-by: Simona Vetter <simona.vet...@ffwll.ch>
Acked-by: Philipp Stanner <pha...@kernel.org>
One more nice-to-have / nit below
>
> Thanks,
> Jani.
>
> >
> >
> > >
> > > ---
> > >
> > > Cc: Matthew Brost <matthew.br...@intel.com>
> > > Cc: Danilo Krummrich <d...@kernel.org>
> > > Cc: Philipp Stanner <pha...@kernel.org>
> > > Cc: "Christian König" <ckoenig.leichtzumer...@gmail.com>
> > > Cc: dri-de...@lists.freedesktop.org
> > > ---
> > > drivers/gpu/drm/scheduler/sched_entity.c | 2 +-
> > > drivers/gpu/drm/scheduler/sched_main.c | 20 +++++++++++-------
> > > --
> > > 2 files changed, 12 insertions(+), 10 deletions(-)
> > >
> > > diff --git a/drivers/gpu/drm/scheduler/sched_entity.c
> > > b/drivers/gpu/drm/scheduler/sched_entity.c
> > > index 69bcf0e99d57..e29af71d4b5c 100644
> > > --- a/drivers/gpu/drm/scheduler/sched_entity.c
> > > +++ b/drivers/gpu/drm/scheduler/sched_entity.c
> > > @@ -92,7 +92,7 @@ int drm_sched_entity_init(struct
> > > drm_sched_entity *entity,
> > > * the lowest priority available.
> > > */
> > > if (entity->priority >= sched_list[0]->num_rqs)
> > > {
> > > - drm_err(sched_list[0], "entity with out-
> > > of-bounds priority:%u num_rqs:%u\n",
> > > + dev_err(sched_list[0]->dev, "entity with
> > > out-of-bounds priority:%u num_rqs:%u\n",
Since you're touching that line already, could you improve that
string's formatting a bit?
"entity has out-of-bounds priority: %u. num_rqs: %u\n"
Thx,
P.
> > > entity->priority, sched_list[0]-
> > > >num_rqs);
> > > entity->priority = max_t(s32, (s32)
> > > sched_list[0]->num_rqs - 1,
> > > (s32)
> > > DRM_SCHED_PRIORITY_KERNEL);
> > > diff --git a/drivers/gpu/drm/scheduler/sched_main.c
> > > b/drivers/gpu/drm/scheduler/sched_main.c
> > > index a48be16ab84f..d1c1f22fd1db 100644
> > > --- a/drivers/gpu/drm/scheduler/sched_main.c
> > > +++ b/drivers/gpu/drm/scheduler/sched_main.c
> > > @@ -103,9 +103,9 @@ static u32 drm_sched_available_credits(struct
> > > drm_gpu_scheduler *sched)
> > > {
> > > u32 credits;
> > >
> > > - drm_WARN_ON(sched, check_sub_overflow(sched-
> > > >credit_limit,
> > > -
> > > atomic_read(&sched->credit_count),
> > > - &credits));
> > > + WARN_ON(check_sub_overflow(sched->credit_limit,
> > > + atomic_read(&sched-
> > > >credit_count),
> > > + &credits));
> > >
> > > return credits;
> > > }
> > > @@ -130,9 +130,11 @@ static bool drm_sched_can_queue(struct
> > > drm_gpu_scheduler *sched,
> > > /* If a job exceeds the credit limit, truncate it to the
> > > credit limit
> > > * itself to guarantee forward progress.
> > > */
> > > - if (drm_WARN(sched, s_job->credits > sched-
> > > >credit_limit,
> > > - "Jobs may not exceed the credit limit,
> > > truncate.\n"))
> > > + if (s_job->credits > sched->credit_limit) {
> > > + dev_WARN(sched->dev,
> > > + "Jobs may not exceed the credit limit,
> > > truncate.\n");
> > > s_job->credits = sched->credit_limit;
> > > + }
> > >
> > > return drm_sched_available_credits(sched) >= s_job-
> > > >credits;
> > > }
> > > @@ -790,7 +792,7 @@ int drm_sched_job_init(struct drm_sched_job
> > > *job,
> > > * or worse--a blank screen--leave a trail in
> > > the
> > > * logs, so this can be debugged easier.
> > > */
> > > - drm_err(job->sched, "%s: entity has no rq!\n",
> > > __func__);
> > > + dev_err(job->sched->dev, "%s: entity has no
> > > rq!\n", __func__);
> > > return -ENOENT;
> > > }
> > >
> > > @@ -1280,7 +1282,7 @@ int drm_sched_init(struct drm_gpu_scheduler
> > > *sched,
> > > if (num_rqs > DRM_SCHED_PRIORITY_COUNT) {
> > > /* This is a gross violation--tell drivers what
> > > the problem is.
> > > */
> > > - drm_err(sched, "%s: num_rqs cannot be greater
> > > than DRM_SCHED_PRIORITY_COUNT\n",
> > > + dev_err(sched->dev, "%s: num_rqs cannot be
> > > greater than DRM_SCHED_PRIORITY_COUNT\n",
> > > __func__);
> > > return -EINVAL;
> > > } else if (sched->sched_rq) {
> > > @@ -1288,7 +1290,7 @@ int drm_sched_init(struct drm_gpu_scheduler
> > > *sched,
> > > * fine-tune their DRM calling order, and return
> > > all
> > > * is good.
> > > */
> > > - drm_warn(sched, "%s: scheduler already
> > > initialized!\n", __func__);
> > > + dev_warn(sched->dev, "%s: scheduler already
> > > initialized!\n", __func__);
> > > return 0;
> > > }
> > >
> > > @@ -1343,7 +1345,7 @@ int drm_sched_init(struct drm_gpu_scheduler
> > > *sched,
> > > Out_check_own:
> > > if (sched->own_submit_wq)
> > > destroy_workqueue(sched->submit_wq);
> > > - drm_err(sched, "%s: Failed to setup GPU scheduler--out
> > > of memory\n", __func__);
> > > + dev_err(sched->dev, "%s: Failed to setup GPU scheduler--
> > > out of memory\n", __func__);
> > > return -ENOMEM;
> > > }
> > > EXPORT_SYMBOL(drm_sched_init);
> > > --
> > > 2.39.5
> > >
>
