[PATCH 1/1] drm/amdgpu: Use device wedged event

[Raag Jadav]

On Fri, Dec 13, 2024 at 11:15:31AM -0300, André Almeida wrote:
> Hi Christian,
> 
> Em 13/12/2024 04:34, Christian König escreveu:
> > Am 12.12.24 um 20:09 schrieb André Almeida:
> > > Use DRM's device wedged event to notify userspace that a reset had
> > > happened. For now, only use `none` method meant for telemetry
> > > capture.
> > > 
> > > Signed-off-by: André Almeida <andrealmeid at igalia.com>
> > > ---
> > >   drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 3 +++
> > >   1 file changed, 3 insertions(+)
> > > 
> > > diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> > > b/drivers/gpu/ drm/amd/amdgpu/amdgpu_device.c
> > > index 96316111300a..19e1a5493778 100644
> > > --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> > > +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> > > @@ -6057,6 +6057,9 @@ int amdgpu_device_gpu_recover(struct
> > > amdgpu_device *adev,
> > >           dev_info(adev->dev, "GPU reset end with ret = %d\n", r);
> > >       atomic_set(&adev->reset_domain->reset_res, r);
> > > +
> > > +    drm_dev_wedged_event(adev_to_drm(adev), DRM_WEDGE_RECOVERY_NONE);
> > 
> > That looks really good in general. I would just make the
> > DRM_WEDGE_RECOVERY_NONE depend on the value of "r".
> > 
> 
> Why depend or `r`? A reset was triggered anyway, regardless of the success
> of it, shouldn't we tell userspace?

A failed reset would perhaps result in wedging, atleast that's how i915
is handling it.

Raag