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drm/scheduler: add a pointer to scheduler in the rq

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This patch is in preparation for a better load balancing in
scheduler. It allows us to associate entities with the
run queues instead of binding them to a scheduler.

Signed-off-by: Nayan Deshmukh <nayan26deshmukh@gmail.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Acked-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Nayan Deshmukh 2018-07-13 15:21:13 +05:30 committed by Alex Deucher
parent b7d85e1db3
commit 8dc9fbbf27
2 changed files with 6 additions and 2 deletions
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6
drivers/gpu/drm/scheduler/gpu_scheduler.c
View file

@ -69,11 +69,13 @@ static void drm_sched_process_job(struct dma_fence *f, struct dma_fence_cb *cb);
*
* Initializes a scheduler runqueue.
*/
static void drm_sched_rq_init(struct drm_sched_rq *rq)
static void drm_sched_rq_init(struct drm_gpu_scheduler *sched,
struct drm_sched_rq *rq)
{
spin_lock_init(&rq->lock);
INIT_LIST_HEAD(&rq->entities);
rq->current_entity = NULL;
rq->sched = sched;
}
/**
@ -926,7 +928,7 @@ int drm_sched_init(struct drm_gpu_scheduler *sched,
sched->timeout = timeout;
sched->hang_limit = hang_limit;
for (i = DRM_SCHED_PRIORITY_MIN; i < DRM_SCHED_PRIORITY_MAX; i++)
drm_sched_rq_init(&sched->sched_rq[i]);
drm_sched_rq_init(sched, &sched->sched_rq[i]);
init_waitqueue_head(&sched->wake_up_worker);
init_waitqueue_head(&sched->job_scheduled);

2
include/drm/gpu_scheduler.h
View file

@ -93,6 +93,7 @@ struct drm_sched_entity {
* struct drm_sched_rq - queue of entities to be scheduled.
*
* @lock: to modify the entities list.
* @sched: the scheduler to which this rq belongs to.
* @entities: list of the entities to be scheduled.
* @current_entity: the entity which is to be scheduled.
*
@ -102,6 +103,7 @@ struct drm_sched_entity {
*/
struct drm_sched_rq {
spinlock_t lock;
struct drm_gpu_scheduler *sched;
struct list_head entities;
struct drm_sched_entity *current_entity;
};