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drm/amdgpu: add amd_sched_next_queued_seq function 

This function is used to get the next queued sequence number

Signed-off-by: Jammy Zhou <Jammy.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Jammy Zhou 2015-08-03 10:27:57 +08:00 committed by Alex Deucher
parent 63ad8d5882
commit 27f6642d06
3 changed files with 15 additions and 1 deletions
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2
drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
View File

@ -310,7 +310,7 @@ struct fence *amdgpu_ctx_get_fence(struct amdgpu_ctx *ctx,
spin_lock(&ctx->ring_lock);
if (amdgpu_enable_scheduler)
queued_seq = atomic64_read(&cring->c_entity.last_queued_v_seq) + 1;
queued_seq = amd_sched_next_queued_seq(&cring->c_entity);
else
queued_seq = cring->sequence;

12
drivers/gpu/drm/amd/scheduler/gpu_scheduler.c
View File

@ -507,3 +507,15 @@ void amd_sched_emit(struct amd_context_entity *c_entity, uint64_t seq)
atomic64_set(&c_entity->last_emitted_v_seq, seq);
wake_up_all(&c_entity->wait_emit);
}
/**
* Get next queued sequence number
*
* @entity The context entity
*
* return the next queued sequence number
*/
uint64_t amd_sched_next_queued_seq(struct amd_context_entity *c_entity)
{
return atomic64_read(&c_entity->last_queued_v_seq) + 1;
}

2
drivers/gpu/drm/amd/scheduler/gpu_scheduler.h
View File

@ -153,4 +153,6 @@ int amd_context_entity_init(struct amd_gpu_scheduler *sched,
void amd_sched_emit(struct amd_context_entity *c_entity, uint64_t seq);
uint64_t amd_sched_next_queued_seq(struct amd_context_entity *c_entity);
#endif