Re: [PATCH 1/1] drm/amdgpu: disable gpu-sched load balance for uvd

[Leo Liu <leo.liu@xxxxxxx>]

On 2020-08-31 1:39 p.m., Alex Deucher wrote:
> On Mon, Aug 31, 2020 at 10:55 AM Nirmoy <nirmodas@xxxxxxx> wrote:
> > Hi Alex,
> >
> > On 8/31/20 4:17 PM, Alex Deucher wrote:
> > > On Mon, Aug 31, 2020 at 6:41 AM Nirmoy Das <nirmoy.das@xxxxxxx> wrote:
> > > > UVD dependent jobs should run on the same udv instance.
> > > > This patch disables gpu scheduler's load balancer for
> > > > a context which binds jobs from same the context to a udv
> > > > instance.
> > > typos: udv -> uvd
> > > With that fixed:
> > > Reviewed-by: Alex Deucher <alexander.deucher@xxxxxxx>
> > >
> > > Does VCE need a similar fix?  What about UVD_ENC?
> >
> > I am not sure, can you please confirm this.
> @Leo Liu can you confirm?

Vega20 have 2 UVDs and 1 VCE, so UVD_ENC(AMDGPU_HW_IP_UVD_ENC) should 
need the same fix.

Regards,

Leo



> Alex
>
> > Nirmoy
> >
> >
> >
> > > Alex
> > >
> > >
> > > > Signed-off-by: Nirmoy Das <nirmoy.das@xxxxxxx>
> > > > ---
> > > >    drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c | 4 +++-
> > > >    1 file changed, 3 insertions(+), 1 deletion(-)
> > > >
> > > > diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
> > > > index 59032c26fc82..7cd398d25498 100644
> > > > --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
> > > > +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
> > > > @@ -114,7 +114,9 @@ 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) {
> > > > +       if (hw_ip == AMDGPU_HW_IP_VCN_ENC ||
> > > > +           hw_ip == AMDGPU_HW_IP_VCN_DEC ||
> > > > +           hw_ip == AMDGPU_HW_IP_UVD) {
> > > >                   sched = drm_sched_pick_best(scheds, num_scheds);
> > > >                   scheds = &sched;
> > > >                   num_scheds = 1;
> > > > --
> > > > 2.28.0
> > > >
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