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Am 30.07.2018 um 22:51 schrieb Andrey
Grodzovsky:
On 07/30/2018 09:30 AM, Nayan
Deshmukh wrote:
We
removed the redundancy of having an extra scheduler field,
so we
can't set the rq to NULL any more or otherwise won't know
which
scheduler to use for the cleanup.
Just remove the entity from the scheduling list instead.
Signed-off-by: Christian König <christian.koenig@xxxxxxx>
Good catch.
---
drivers/gpu/drm/scheduler/gpu_scheduler.c | 35
+++++++------------------------
1 file changed, 8 insertions(+), 27 deletions(-)
diff --git a/drivers/gpu/drm/scheduler/gpu_scheduler.c
b/drivers/gpu/drm/scheduler/gpu_scheduler.c
index f563e4fbb4b6..1b733229201e 100644
--- a/drivers/gpu/drm/scheduler/gpu_scheduler.c
+++ b/drivers/gpu/drm/scheduler/gpu_scheduler.c
@@ -198,21 +198,6 @@ int drm_sched_entity_init(struct
drm_sched_entity *entity,
}
EXPORT_SYMBOL(drm_sched_entity_init);
-/**
- * drm_sched_entity_is_initialized - Query if entity is
initialized
- *
- * @sched: Pointer to scheduler instance
- * @entity: The pointer to a valid scheduler entity
- *
- * return true if entity is initialized, false otherwise
-*/
-static bool drm_sched_entity_is_initialized(struct
drm_gpu_scheduler *sched,
- struct
drm_sched_entity *entity)
-{
- return entity->rq != NULL &&
- entity->rq->sched == sched;
-}
-
/**
* drm_sched_entity_is_idle - Check if entity is idle
*
@@ -224,7 +209,8 @@ static bool
drm_sched_entity_is_idle(struct drm_sched_entity *entity)
{
rmb();
- if (!entity->rq ||
spsc_queue_peek(&entity->job_queue) == NULL)
+ if (list_empty(&entity->list) ||
+ spsc_queue_peek(&entity->job_queue) ==
NULL)
return true;
return false;
@@ -279,8 +265,6 @@ long drm_sched_entity_flush(struct
drm_sched_entity *entity, long timeout)
long ret = timeout;
sched = entity->rq->sched;
- if (!drm_sched_entity_is_initialized(sched,
entity))
- return ret;
Just to be clear, you remove this function because it's redundant
to call it?
Yes, exactly.
Christian.
Andrey
/**
* The client will not queue more IBs during this
fini, consume existing
* queued IBs or discard them on SIGKILL
@@ -299,7 +283,7 @@ long drm_sched_entity_flush(struct
drm_sched_entity *entity, long timeout)
last_user = cmpxchg(&entity->last_user,
current->group_leader, NULL);
if ((!last_user || last_user ==
current->group_leader) &&
(current->flags & PF_EXITING)
&& (current->exit_code == SIGKILL))
- drm_sched_entity_set_rq(entity, NULL);
+ drm_sched_rq_remove_entity(entity->rq,
entity);
return ret;
}
@@ -320,7 +304,7 @@ void drm_sched_entity_fini(struct
drm_sched_entity *entity)
struct drm_gpu_scheduler *sched;
sched = entity->rq->sched;
- drm_sched_entity_set_rq(entity, NULL);
+ drm_sched_rq_remove_entity(entity->rq, entity);
/* Consumption of existing IBs wasn't completed.
Forcefully
* remove them here.
@@ -416,15 +400,12 @@ void drm_sched_entity_set_rq(struct
drm_sched_entity *entity,
if (entity->rq == rq)
return;
- spin_lock(&entity->rq_lock);
-
- if (entity->rq)
- drm_sched_rq_remove_entity(entity->rq,
entity);
+ BUG_ON(!rq);
+ spin_lock(&entity->rq_lock);
+ drm_sched_rq_remove_entity(entity->rq, entity);
entity->rq = rq;
- if (rq)
- drm_sched_rq_add_entity(rq, entity);
-
+ drm_sched_rq_add_entity(rq, entity);
spin_unlock(&entity->rq_lock);
}
EXPORT_SYMBOL(drm_sched_entity_set_rq);
--
2.14.1
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