From 56e449603f0ac580700621a356d35d5716a62ce5 Mon Sep 17 00:00:00 2001 From: Luben Tuikov Date: Sat, 14 Oct 2023 21:15:35 -0400 Subject: drm/sched: Convert the GPU scheduler to variable number of run-queues MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The GPU scheduler has now a variable number of run-queues, which are set up at drm_sched_init() time. This way, each driver announces how many run-queues it requires (supports) per each GPU scheduler it creates. Note, that run-queues correspond to scheduler "priorities", thus if the number of run-queues is set to 1 at drm_sched_init(), then that scheduler supports a single run-queue, i.e. single "priority". If a driver further sets a single entity per run-queue, then this creates a 1-to-1 correspondence between a scheduler and a scheduled entity. Cc: Lucas Stach Cc: Russell King Cc: Qiang Yu Cc: Rob Clark Cc: Abhinav Kumar Cc: Dmitry Baryshkov Cc: Danilo Krummrich Cc: Matthew Brost Cc: Boris Brezillon Cc: Alex Deucher Cc: Christian König Cc: Emma Anholt Cc: etnaviv@lists.freedesktop.org Cc: lima@lists.freedesktop.org Cc: linux-arm-msm@vger.kernel.org Cc: freedreno@lists.freedesktop.org Cc: nouveau@lists.freedesktop.org Cc: dri-devel@lists.freedesktop.org Signed-off-by: Luben Tuikov Acked-by: Christian König Link: https://lore.kernel.org/r/20231023032251.164775-1-luben.tuikov@amd.com --- include/drm/gpu_scheduler.h | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) (limited to 'include') diff --git a/include/drm/gpu_scheduler.h b/include/drm/gpu_scheduler.h index f9544d9b670d..653e0eec9743 100644 --- a/include/drm/gpu_scheduler.h +++ b/include/drm/gpu_scheduler.h @@ -472,7 +472,9 @@ struct drm_sched_backend_ops { * @hw_submission_limit: the max size of the hardware queue. * @timeout: the time after which a job is removed from the scheduler. * @name: name of the ring for which this scheduler is being used. - * @sched_rq: priority wise array of run queues. + * @num_rqs: Number of run-queues. This is at most DRM_SCHED_PRIORITY_COUNT, + * as there's usually one run-queue per priority, but could be less. + * @sched_rq: An allocated array of run-queues of size @num_rqs; * @wake_up_worker: the wait queue on which the scheduler sleeps until a job * is ready to be scheduled. * @job_scheduled: once @drm_sched_entity_do_release is called the scheduler @@ -501,7 +503,8 @@ struct drm_gpu_scheduler { uint32_t hw_submission_limit; long timeout; const char *name; - struct drm_sched_rq sched_rq[DRM_SCHED_PRIORITY_COUNT]; + u32 num_rqs; + struct drm_sched_rq **sched_rq; wait_queue_head_t wake_up_worker; wait_queue_head_t job_scheduled; atomic_t hw_rq_count; @@ -521,7 +524,7 @@ struct drm_gpu_scheduler { int drm_sched_init(struct drm_gpu_scheduler *sched, const struct drm_sched_backend_ops *ops, - uint32_t hw_submission, unsigned hang_limit, + u32 num_rqs, uint32_t hw_submission, unsigned int hang_limit, long timeout, struct workqueue_struct *timeout_wq, atomic_t *score, const char *name, struct device *dev); -- cgit v1.2.3-70-g09d2