[Intel-gfx] Missing notifications for front buffer status change(invalidate)

[Ramalingam C]

cc += intel-gfx

On Wednesday 18 March 2015 02:12 PM, Ramalingam C wrote:
> Hi,
>
> Is there anyway I can test the front buffer tracking?
>
> On latest drm-intel-nightly, I am observing that when ubuntu bootsup 
> after few secs (like ~15Secs)
> there no call from intel_fb_obj_invalidate() to invalidate the drrs.
>
> But system is healthy and FBs are keep changing. But no notification 
> to DRRS for FB status change.
>
> I have verified this by observing the busy_frontbuffer_bits from 
> /sys/kernel/debug/dri/0/i915_drrs_status. This bit is not changing at 
> all.
> Hence DRRS is stuck at DRRS_LOW_RR itself.
>
> Is it known valid issue? Or am I doing something wrong.!?
>

-- 
Ram