[PATCH RFC 1/4] drm/panfrost: Provide a dummy show_fdinfo() implementation

[Boris Brezillon]

Provide a dummy show_fdinfo() implementation exposing drm-driver and
drm-client-id. More stats will be added soon.

Signed-off-by: Boris Brezillon <boris.brezillon at collabora.com>
---
 drivers/gpu/drm/panfrost/panfrost_drv.c | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/panfrost/panfrost_drv.c b/drivers/gpu/drm/panfrost/panfrost_drv.c
index 2fa5afe21288..6ee43559fc14 100644
--- a/drivers/gpu/drm/panfrost/panfrost_drv.c
+++ b/drivers/gpu/drm/panfrost/panfrost_drv.c
@@ -515,7 +515,22 @@ static const struct drm_ioctl_desc panfrost_drm_driver_ioctls[] = {
 	PANFROST_IOCTL(MADVISE,		madvise,	DRM_RENDER_ALLOW),
 };
 
-DEFINE_DRM_GEM_FOPS(panfrost_drm_driver_fops);
+static void panfrost_show_fdinfo(struct seq_file *m, struct file *f)
+{
+	struct drm_file *file = f->private_data;
+	struct panfrost_file_priv *panfrost_priv = file->driver_priv;
+
+	seq_printf(m, "drm-driver:\t%s\n", file->minor->dev->driver->name);
+	seq_printf(m, "drm-client-id:\t%llu\n", panfrost_priv->sched_entity[0].fence_context);
+}
+
+static const struct file_operations panfrost_drm_driver_fops = {
+	.owner = THIS_MODULE,
+	DRM_GEM_FOPS,
+#ifdef CONFIG_PROC_FS
+	.show_fdinfo = panfrost_show_fdinfo,
+#endif
+};
 
 /*
  * Panfrost driver version:
-- 
2.38.1