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drm/amdgpu: disable gpu_sched load balancer for vcn jobs

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VCN HW doesn't support dynamic load balance on multiple instances
for a context. This patch initializes VNC entities with only one
drm_gpu_scheduler picked by drm_sched_pick_best(). Picking a
drm_gpu_scheduler using drm_sched_pick_best() ensures that we
do load balance among multiple contexts but not among multiple
jobs in a context.

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
2020-03-13 15:26:54 +01:00
committed by Alex Deucher
parent ec2edcc279
commit 4ff7d8ba4c
1 changed files with 8 additions and 4 deletions
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12
drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
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@@ -121,12 +121,16 @@ static int amdgpu_ctx_init_entity(struct amdgpu_ctx *ctx, const u32 hw_ip, const
num_scheds = 1;
break;
case AMDGPU_HW_IP_VCN_DEC:
scheds = adev->vcn.vcn_dec_sched;
num_scheds = adev->vcn.num_vcn_dec_sched;
sched = drm_sched_pick_best(adev->vcn.vcn_dec_sched,
adev->vcn.num_vcn_dec_sched);
scheds = &sched;
num_scheds = 1;
break;
case AMDGPU_HW_IP_VCN_ENC:
scheds = adev->vcn.vcn_enc_sched;
num_scheds = adev->vcn.num_vcn_enc_sched;
sched = drm_sched_pick_best(adev->vcn.vcn_enc_sched,
adev->vcn.num_vcn_enc_sched);
scheds = &sched;
num_scheds = 1;
break;
case AMDGPU_HW_IP_VCN_JPEG:
scheds = adev->jpeg.jpeg_sched;