Commit bc21585f authored by Nirmoy Das's avatar Nirmoy Das Committed by Alex Deucher
Browse files

drm/amdgpu: disable gpu-sched load balance for uvd 



On hardware with multiple uvd instances, dependent uvd jobs
may get scheduled to different uvd instances. Because uvd_enc
jobs retain hw context, dependent jobs should always run on the
same uvd instance. This patch disables GPU scheduler's load balancer
for a context that binds jobs from the same context to a uvd
instance.

v2: Squash in uvd_enc fix

Signed-off-by: default avatarNirmoy Das <nirmoy.das@amd.com>
Reviewed-by: default avatarChristian König <christian.koenig@amd.com>
Reviewed-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 5dc1a0bc

drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c

+5 −1
Original line number Diff line number Diff line
@@ -114,7 +114,11 @@ static int amdgpu_ctx_init_entity(struct amdgpu_ctx *ctx, u32 hw_ip, 
	scheds = adev->gpu_sched[hw_ip][hw_prio].sched;

	num_scheds = adev->gpu_sched[hw_ip][hw_prio].num_scheds;



	if (hw_ip == AMDGPU_HW_IP_VCN_ENC || hw_ip == AMDGPU_HW_IP_VCN_DEC) {

	/* disable load balance if the hw engine retains context among dependent jobs */

	if (hw_ip == AMDGPU_HW_IP_VCN_ENC ||

	    hw_ip == AMDGPU_HW_IP_VCN_DEC ||

	    hw_ip == AMDGPU_HW_IP_UVD_ENC ||

	    hw_ip == AMDGPU_HW_IP_UVD) {

		sched = drm_sched_pick_best(scheds, num_scheds);

		scheds = &sched;

		num_scheds = 1;