[Intel-gfx] [PATCH 5/5] drm/i915: debugfs entries for [e]LLC

[Daniel Vetter]

On Thu, Jul 04, 2013 at 11:02:07AM -0700, Ben Widawsky wrote:
> To make users life a little easier figuring out what they have on their
> system.
> 
> Ideally, I'd really like to report LLC size, but it turned out to be a
> bit of a pain. Maybe I'll revisit it in the future.
> 
> Signed-off-by: Ben Widawsky <ben at bwidawsk.net>

I think a getparam for eLLC would be neat, so that usespace can use it to
tune working set sizes.
-Daniel

> ---
>  drivers/gpu/drm/i915/i915_debugfs.c | 14 ++++++++++++++
>  1 file changed, 14 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
> index 3e36756..b75d0a6 100644
> --- a/drivers/gpu/drm/i915/i915_debugfs.c
> +++ b/drivers/gpu/drm/i915/i915_debugfs.c
> @@ -1941,6 +1941,19 @@ static int i915_dpio_info(struct seq_file *m, void *data)
>  	return 0;
>  }
>  
> +static int i915_llc(struct seq_file *m, void *data)
> +{
> +	struct drm_info_node *node = (struct drm_info_node *) m->private;
> +	struct drm_device *dev = node->minor->dev;
> +	struct drm_i915_private *dev_priv = dev->dev_private;
> +
> +	/* Size calculation for LLC is a bit of a pain. Ignore for now. */
> +	seq_printf(m, "LLC: %s\n", yesno(HAS_LLC(dev)));
> +	seq_printf(m, "eLLC: %zuMB\n", dev_priv->ellc_size);
> +
> +	return 0;
> +}
> +
>  static int
>  i915_wedged_get(void *data, u64 *val)
>  {
> @@ -2370,6 +2383,7 @@ static struct drm_info_list i915_debugfs_list[] = {
>  	{"i915_swizzle_info", i915_swizzle_info, 0},
>  	{"i915_ppgtt_info", i915_ppgtt_info, 0},
>  	{"i915_dpio", i915_dpio_info, 0},
> +	{"i915_llc", i915_llc, 0},
>  };
>  #define I915_DEBUGFS_ENTRIES ARRAY_SIZE(i915_debugfs_list)
>  
> -- 
> 1.8.3
> 
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-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch