Re: [PATCH 28/28] drm/i915: Replace hangcheck by heartbeats

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Quoting Bloomfield, Jon (2019-08-26 18:51:32)
> > -----Original Message-----
> > From: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
> > > > diff --git a/drivers/gpu/drm/i915/i915_getparam.c
> > > > b/drivers/gpu/drm/i915/i915_getparam.c
> > > > index 5d9101376a3d..e6c351080593 100644
> > > > --- a/drivers/gpu/drm/i915/i915_getparam.c
> > > > +++ b/drivers/gpu/drm/i915/i915_getparam.c
> > > > @@ -78,8 +78,7 @@ int i915_getparam_ioctl(struct drm_device *dev, void
> > > > *data,
> > > >                       return -ENODEV;
> > > >               break;
> > > >       case I915_PARAM_HAS_GPU_RESET:
> > > > -             value = i915_modparams.enable_hangcheck &&
> > > > -                     intel_has_gpu_reset(i915);
> > > > +             value = intel_has_gpu_reset(i915);
> > >
> > > Don't understand this tweak. We haven't really changed the essence of
> > hangcheck, just improved it, so why do we change this get_param?
> > 
> > I deleted the modparam in earlier patches. But anticipated you would
> > object...
> 
> Ok, I see. But then shouldn't we just be checking the new param for a non-zero timeout? That would then be equivalent.
> Or, it seems fair to conclude that this never made sense, but then it really ought to be a separate patch to remove the association between HAS_GPU_RESET and hangcheck.

The chunk is gone. Questions for another day. :-p
-Chris
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