The controlD device

[Thomas Hellstrom]

On 10/21/2011 06:48 PM, Dave Airlie wrote:
>> Why do we have CONTROL_ALLOW on all modesetting ioctls?, also this code in
>> drm_crtc.c  seems odd:
>>      
> The plan was to allow a master daemon to create seats and compute
> nodes, on reflection it probably didn't need *all* the modesetting
> ioctls,
> just the GetResources one.
>
> So gdm or some equivalent would keep control over the control node,
> and could be used to establish seats via render nodes.
> Render nodes could have various crtc/outputs assigned to them.
> A GPGPU render node would have 0 output pieces attached.
>
>    
>> if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
>> ...
>>
>> Isn't that equivalent to
>>
>> if (file_priv->minor->type == DRM_MINOR_CONTROL) { ?
>>      
> Yeah most likely just over thinking something. should be the same.
>
> I had a tree on k.org with this stuff more fleshed out,
> I've just pushed it out here:
> http://cgit.freedesktop.org/~airlied/linux/log/?h=drm-render-nodes
>
>    

OK. Thanks. Got a better understanding what it's all about now.

/Thomas


> Dave.
>