[Intel-gfx] [PATCH 3/9] drm/i915: debugfs for frontbuffer tracking

[Paulo Zanoni]

2015-06-18 5:30 GMT-03:00 Daniel Vetter <daniel.vetter at ffwll.ch>:
> Useful to figure out whether stuck bits are due to the frontbuffer
> tracking code as opposed to individual consumers (who have their own
> bitmask tracking).

Reviewed-by: Paulo Zanoni <paulo.r.zanoni at intel.com>

>
> Signed-off-by: Daniel Vetter <daniel.vetter at intel.com>
> ---
>  drivers/gpu/drm/i915/i915_debugfs.c | 16 ++++++++++++++++
>  1 file changed, 16 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
> index c49fe2afa223..f3b80627d5b7 100644
> --- a/drivers/gpu/drm/i915/i915_debugfs.c
> +++ b/drivers/gpu/drm/i915/i915_debugfs.c
> @@ -1581,6 +1581,21 @@ static int i915_drpc_info(struct seq_file *m, void *unused)
>                 return ironlake_drpc_info(m);
>  }
>
> +static int i915_frontbuffer_tracking(struct seq_file *m, void *unused)
> +{
> +       struct drm_info_node *node = m->private;
> +       struct drm_device *dev = node->minor->dev;
> +       struct drm_i915_private *dev_priv = dev->dev_private;
> +
> +       seq_printf(m, "FB tracking busy bits: 0x%08x\n",
> +                  dev_priv->fb_tracking.busy_bits);
> +
> +       seq_printf(m, "FB tracking flip bits: 0x%08x\n",
> +                  dev_priv->fb_tracking.flip_bits);
> +
> +       return 0;
> +}
> +
>  static int i915_fbc_status(struct seq_file *m, void *unused)
>  {
>         struct drm_info_node *node = m->private;
> @@ -5024,6 +5039,7 @@ static const struct drm_info_list i915_debugfs_list[] = {
>         {"i915_drpc_info", i915_drpc_info, 0},
>         {"i915_emon_status", i915_emon_status, 0},
>         {"i915_ring_freq_table", i915_ring_freq_table, 0},
> +       {"i915_frontbuffer_tracking", i915_frontbuffer_tracking, 0},
>         {"i915_fbc_status", i915_fbc_status, 0},
>         {"i915_ips_status", i915_ips_status, 0},
>         {"i915_sr_status", i915_sr_status, 0},
> --
> 2.1.0
>
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-- 
Paulo Zanoni