[PATCH] drm/v3d: Show the memory-management stats on debugfs

[Melissa Wen]

On 01/05, Maíra Canal wrote:
> Dump the contents of the DRM MM allocator of the V3D driver. This will
> help us to debug the VA ranges allocated.
> 
> Signed-off-by: Maíra Canal <mcanal at igalia.com>
> ---
>  drivers/gpu/drm/v3d/v3d_debugfs.c | 15 +++++++++++++++
>  1 file changed, 15 insertions(+)
> 
> diff --git a/drivers/gpu/drm/v3d/v3d_debugfs.c b/drivers/gpu/drm/v3d/v3d_debugfs.c
> index f843a50d5dce..cdfe1d3bf5ee 100644
> --- a/drivers/gpu/drm/v3d/v3d_debugfs.c
> +++ b/drivers/gpu/drm/v3d/v3d_debugfs.c
> @@ -260,11 +260,26 @@ static int v3d_measure_clock(struct seq_file *m, void *unused)
>  	return 0;
>  }
> 
> +static int v3d_debugfs_mm(struct seq_file *m, void *unused)
> +{
> +	struct drm_printer p = drm_seq_file_printer(m);
> +	struct drm_debugfs_entry *entry = m->private;
> +	struct drm_device *dev = entry->dev;
> +	struct v3d_dev *v3d = to_v3d_dev(dev);
> +
> +	spin_lock(&v3d->mm_lock);
> +	drm_mm_print(&v3d->mm, &p);
> +	spin_unlock(&v3d->mm_lock);
> +
> +	return 0;
> +}

LGTM.

Reviewed-by: Melissa Wen <mwen at igalia.com>

> +
>  static const struct drm_debugfs_info v3d_debugfs_list[] = {
>  	{"v3d_ident", v3d_v3d_debugfs_ident, 0},
>  	{"v3d_regs", v3d_v3d_debugfs_regs, 0},
>  	{"measure_clock", v3d_measure_clock, 0},
>  	{"bo_stats", v3d_debugfs_bo_stats, 0},
> +	{"v3d_mm", v3d_debugfs_mm, 0},
>  };
> 
>  void
> --
> 2.43.0
>