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drm/scheduler: implement a function to modify sched list

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Implement drm_sched_entity_modify_sched() which modifies existing
sched_list with a different one. This is going to be helpful when
userspace changes priority of a ctx/entity then the driver can switch
to the corresponding HW scheduler list for that priority.

Signed-off-by: Nirmoy Das <nirmoy.das@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Nirmoy Das 2020-02-27 15:34:15 +01:00 committed by Alex Deucher
parent 33abcb1f5a
commit b37aced31e
2 changed files with 22 additions and 0 deletions
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18
drivers/gpu/drm/scheduler/sched_entity.c
View File

@ -83,6 +83,24 @@ int drm_sched_entity_init(struct drm_sched_entity *entity,
}
EXPORT_SYMBOL(drm_sched_entity_init);
/**
* drm_sched_entity_modify_sched - Modify sched of an entity
* @entity: scheduler entity to init
* @sched_list: the list of new drm scheds which will replace
* existing entity->sched_list
* @num_sched_list: number of drm sched in sched_list
*/
void drm_sched_entity_modify_sched(struct drm_sched_entity *entity,
struct drm_gpu_scheduler **sched_list,
unsigned int num_sched_list)
{
WARN_ON(!num_sched_list || !sched_list);
entity->sched_list = sched_list;
entity->num_sched_list = num_sched_list;
}
EXPORT_SYMBOL(drm_sched_entity_modify_sched);
/**
* drm_sched_entity_is_idle - Check if entity is idle
*

4
include/drm/gpu_scheduler.h
View File

@ -297,6 +297,10 @@ void drm_sched_fini(struct drm_gpu_scheduler *sched);
int drm_sched_job_init(struct drm_sched_job *job,
struct drm_sched_entity *entity,
void *owner);
void drm_sched_entity_modify_sched(struct drm_sched_entity *entity,
struct drm_gpu_scheduler **sched_list,
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_stop(struct drm_gpu_scheduler *sched, struct drm_sched_job *bad);