[Intel-gfx] [PATCH 16/16] drm/i915: Allow RPS waitboosting to use max GPU frequency

[Daniel Vetter]

On Mon, Apr 27, 2015 at 01:41:27PM +0100, Chris Wilson wrote:
> Ignore the restriction imposed by the user for when the GPU is stalling
> the clients and dropping frames. We will return back to the user limits
> immediately once the stall is over.
> 
> Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
> ---
>  drivers/gpu/drm/i915/intel_pm.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
> index 0cc9e95f70d3..9205b5fe2186 100644
> --- a/drivers/gpu/drm/i915/intel_pm.c
> +++ b/drivers/gpu/drm/i915/intel_pm.c
> @@ -4161,7 +4161,7 @@ void intel_rps_boost(struct drm_i915_private *dev_priv,
>  		rps = NULL;
>  
>  	mutex_lock(&dev_priv->rps.hw_lock);
> -	val = dev_priv->rps.max_freq_softlimit;
> +	val = dev_priv->rps.max_freq;

On second thought this has the risk of going into the overclocking range,
which we probably don't want to do behind the user's back. I've left this
one out for now.
-Daniel

>  	if (dev_priv->rps.enabled &&
>  	    dev_priv->mm.busy &&
>  	    dev_priv->rps.cur_freq < val &&
> -- 
> 2.1.4
> 
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-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch