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drm/amdgpu: add plumbing for ctx priority changes v2

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Introduce amdgpu_ctx_priority_override(). A mechanism to override a
context's priority.

An override can be terminated by setting the override to
AMD_SCHED_PRIORITY_UNSET.

v2: change refcounted interface for a direct set

Signed-off-by: Andres Rodriguez <andresx7@gmail.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Andres Rodriguez
2017-06-06 20:20:38 -04:00
committed by Alex Deucher
parent f3d19bf80d
commit c23be4ae1d
2 changed files with 34 additions and 1 deletions
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29
drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
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@@ -72,6 +72,8 @@ static int amdgpu_ctx_init(struct amdgpu_device *adev,
}
ctx->reset_counter = atomic_read(&adev->gpu_reset_counter);
ctx->init_priority = priority;
ctx->override_priority = AMD_SCHED_PRIORITY_UNSET;
/* create context entity for each ring */
for (i = 0; i < adev->num_rings; i++) {
@@ -362,6 +364,33 @@ struct dma_fence *amdgpu_ctx_get_fence(struct amdgpu_ctx *ctx,
return fence;
}
void amdgpu_ctx_priority_override(struct amdgpu_ctx *ctx,
enum amd_sched_priority priority)
{
int i;
struct amdgpu_device *adev = ctx->adev;
struct amd_sched_rq *rq;
struct amd_sched_entity *entity;
struct amdgpu_ring *ring;
enum amd_sched_priority ctx_prio;
ctx->override_priority = priority;
ctx_prio = (ctx->override_priority == AMD_SCHED_PRIORITY_UNSET) ?
ctx->init_priority : ctx->override_priority;
for (i = 0; i < adev->num_rings; i++) {
ring = adev->rings[i];
entity = &ctx->rings[i].entity;
rq = &ring->sched.sched_rq[ctx_prio];
if (ring->funcs->type == AMDGPU_RING_TYPE_KIQ)
continue;
amd_sched_entity_set_rq(entity, rq);
}
}
void amdgpu_ctx_mgr_init(struct amdgpu_ctx_mgr *mgr)
{
mutex_init(&mgr->lock);