On Sat, Feb 03, 2018 at 10:13:36AM +0000, Chris Wilson wrote:
> Quoting Chris Wilson (2018-01-26 21:39:28)
> > Quoting Chris Wilson (2018-01-25 21:28:49)
> > > It is taking longer than a couple of seconds for the FBC worker to be
> > > executed after scheduling; and then will take a minimum of a vblank
> > > interval for it activate. So wait longer to reduce the flip flops.
> > > 
> > > Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk>
> > 
> > Any acks?
> 
> Still looking for a response here. CI says that 2s isn't enough for FBC
> to kick in (it spends most of that time waiting for an invalidate, and
> then at the every end about 5ms waiting for the next vblank).
> 
> In terms of human response, we don't care so much how long it takes to
> enable FBC, but how long it takes to disable; similarly for PSR. The
> downside to it taking longer than expected to enable FBC is power
> consumption. Is the display block hooked up to rapl?

Acked-by: Rodrigo Vivi <rodrigo.v...@intel.com>

> -Chris
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