Commit 51678bb9 authored by Tvrtko Ursulin's avatar Tvrtko Ursulin Committed by Philipp Stanner
Browse files

drm/sched: Add helper to check job dependencies 



Lets isolate scheduler internals from drivers such as pvr which currently
walks the dependency array to look for fences.

Signed-off-by: default avatarTvrtko Ursulin <tvrtko.ursulin@igalia.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: Danilo Krummrich <dakr@redhat.com>
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: Philipp Stanner <pstanner@redhat.com>
Reviewed-by: default avatarMatt Coster <matt.coster@imgtec.com>
Acked-by: default avatarDanilo Krummrich <dakr@kernel.org>
Signed-off-by: default avatarPhilipp Stanner <phasta@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20250113103341.43914-1-tvrtko.ursulin@igalia.com
parent e8941ac9

drivers/gpu/drm/scheduler/sched_main.c

+23 −0
Original line number Diff line number Diff line
@@ -984,6 +984,29 @@ int drm_sched_job_add_implicit_dependencies(struct drm_sched_job *job, 
}

EXPORT_SYMBOL(drm_sched_job_add_implicit_dependencies);



/**

 * drm_sched_job_has_dependency - check whether fence is the job's dependency

 * @job: scheduler job to check

 * @fence: fence to look for

 *

 * Returns:

 * True if @fence is found within the job's dependencies, or otherwise false.

 */

bool drm_sched_job_has_dependency(struct drm_sched_job *job,

				  struct dma_fence *fence)

{

	struct dma_fence *f;

	unsigned long index;



	xa_for_each(&job->dependencies, index, f) {

		if (f == fence)

			return true;

	}



	return false;

}

EXPORT_SYMBOL(drm_sched_job_has_dependency);



/**

 * drm_sched_job_cleanup - clean up scheduler job resources

 * @job: scheduler job to clean up

include/drm/gpu_scheduler.h

+2 −1
Original line number Diff line number Diff line
@@ -564,7 +564,8 @@ int drm_sched_job_add_resv_dependencies(struct drm_sched_job *job, 
int drm_sched_job_add_implicit_dependencies(struct drm_sched_job *job,

					    struct drm_gem_object *obj,

					    bool write);



bool drm_sched_job_has_dependency(struct drm_sched_job *job,

				  struct dma_fence *fence);



void drm_sched_entity_modify_sched(struct drm_sched_entity *entity,

				    struct drm_gpu_scheduler **sched_list,