[Intel-gfx] [PATCH 7/7] drm/i915: don't reallocate the compressed FB at every frame

[Jani Nikula]

On Fri, 13 Feb 2015, Paulo Zanoni <przanoni at gmail.com> wrote:
> From: Paulo Zanoni <paulo.r.zanoni at intel.com>
>
> With the current code we just reallocate the compressed FB at every
> FBC update: we have X in one frame, then in the other frame we need X
> again, but we check "needed < have" instead of "needed <= have".
>
> v2: Rebase after Jani addressed the other problems described in v1.
>
> Cc: Jani Nikula <jani.nikula at intel.com>
> Signed-off-by: Paulo Zanoni <paulo.r.zanoni at intel.com>

Reviewed-by: Jani Nikula <jani.nikula at intel.com>


> ---
>  drivers/gpu/drm/i915/i915_gem_stolen.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_gem_stolen.c b/drivers/gpu/drm/i915/i915_gem_stolen.c
> index 59401f3..f1de95f 100644
> --- a/drivers/gpu/drm/i915/i915_gem_stolen.c
> +++ b/drivers/gpu/drm/i915/i915_gem_stolen.c
> @@ -253,7 +253,7 @@ int i915_gem_stolen_setup_compression(struct drm_device *dev, int size, int fb_c
>  	if (!drm_mm_initialized(&dev_priv->mm.stolen))
>  		return -ENODEV;
>  
> -	if (size < dev_priv->fbc.uncompressed_size)
> +	if (size <= dev_priv->fbc.uncompressed_size)
>  		return 0;
>  
>  	/* Release any current block */
> -- 
> 2.1.4
>

-- 
Jani Nikula, Intel Open Source Technology Center