On 2023-05-17 16:43, Alex Deucher wrote:
> On Wed, May 17, 2023 at 3:04 PM Luben Tuikov <luben.tuikov@xxxxxxx> wrote:
>>
>> Rename drm_sched_wakeup() to drm_sched_wakeup_if_canqueue() since the former
>
> I think drm_sched_wakeup_if_can_queue() looks cleaner.
Yeah, I can change it to this--I was concerned of too many underscores in the name.
(I was also considering drm_sched_wakeup_queue_cond() to mean "wake up if
we can queue conditionally...)
Regards,
Luben
>
> Alex
>
>> is misleading, as it wakes up the GPU scheduler _only if_ more jobs can be
>> queued to the underlying hardware.
>>
>> This distinction is important to make, since the wake conditional in the GPU
>> scheduler thread wakes up when other conditions are also true, e.g. when there
>> are jobs to be cleaned. For instance, a user might want to wake up the
>> scheduler only because there are more jobs to clean, but whether we can queue
>> more jobs is irrelevant.
>>
>> Cc: Christian König <christian.koenig@xxxxxxx>
>> Cc: Alex Deucher <Alexander.Deucher@xxxxxxx>
>> Signed-off-by: Luben Tuikov <luben.tuikov@xxxxxxx>
>> ---
>> drivers/gpu/drm/scheduler/sched_entity.c | 4 ++--
>> drivers/gpu/drm/scheduler/sched_main.c | 6 +++---
>> include/drm/gpu_scheduler.h | 2 +-
>> 3 files changed, 6 insertions(+), 6 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/scheduler/sched_entity.c b/drivers/gpu/drm/scheduler/sched_entity.c
>> index cfb433e9200586..371b44fb4bacf4 100644
>> --- a/drivers/gpu/drm/scheduler/sched_entity.c
>> +++ b/drivers/gpu/drm/scheduler/sched_entity.c
>> @@ -342,7 +342,7 @@ static void drm_sched_entity_wakeup(struct dma_fence *f,
>> container_of(cb, struct drm_sched_entity, cb);
>>
>> drm_sched_entity_clear_dep(f, cb);
>> - drm_sched_wakeup(entity->rq->sched);
>> + drm_sched_wakeup_if_canqueue(entity->rq->sched);
>> }
>>
>> /**
>> @@ -565,7 +565,7 @@ void drm_sched_entity_push_job(struct drm_sched_job *sched_job)
>> if (drm_sched_policy == DRM_SCHED_POLICY_FIFO)
>> drm_sched_rq_update_fifo(entity, submit_ts);
>>
>> - drm_sched_wakeup(entity->rq->sched);
>> + drm_sched_wakeup_if_canqueue(entity->rq->sched);
>> }
>> }
>> EXPORT_SYMBOL(drm_sched_entity_push_job);
>> diff --git a/drivers/gpu/drm/scheduler/sched_main.c b/drivers/gpu/drm/scheduler/sched_main.c
>> index 8739322c30321b..f437dbe62112cc 100644
>> --- a/drivers/gpu/drm/scheduler/sched_main.c
>> +++ b/drivers/gpu/drm/scheduler/sched_main.c
>> @@ -860,12 +860,12 @@ static bool drm_sched_can_queue(struct drm_gpu_scheduler *sched)
>> }
>>
>> /**
>> - * drm_sched_wakeup - Wake up the scheduler when it is ready
>> - *
>> + * drm_sched_wakeup_if_canqueue - Wake up the scheduler
>> * @sched: scheduler instance
>> *
>> + * Wake up the scheduler if we can queue jobs.
>> */
>> -void drm_sched_wakeup(struct drm_gpu_scheduler *sched)
>> +void drm_sched_wakeup_if_canqueue(struct drm_gpu_scheduler *sched)
>> {
>> if (drm_sched_can_queue(sched))
>> wake_up_interruptible(&sched->wake_up_worker);
>> diff --git a/include/drm/gpu_scheduler.h b/include/drm/gpu_scheduler.h
>> index 31d1f5166c79fe..a05dd01e264842 100644
>> --- a/include/drm/gpu_scheduler.h
>> +++ b/include/drm/gpu_scheduler.h
>> @@ -549,7 +549,7 @@ void drm_sched_entity_modify_sched(struct drm_sched_entity *entity,
>> unsigned int num_sched_list);
>>
>> void drm_sched_job_cleanup(struct drm_sched_job *job);
>> -void drm_sched_wakeup(struct drm_gpu_scheduler *sched);
>> +void drm_sched_wakeup_if_canqueue(struct drm_gpu_scheduler *sched);
>> void drm_sched_stop(struct drm_gpu_scheduler *sched, struct drm_sched_job *bad);
>> void drm_sched_start(struct drm_gpu_scheduler *sched, bool full_recovery);
>> void drm_sched_resubmit_jobs(struct drm_gpu_scheduler *sched);
>> --
>> 2.40.1
>>
