[PATCH 2/2] drm/panthor: Enable fdinfo for memory stats

["Adrián Larumbe" <adrian.larumbe@collabora.com>]

When vm-binding an already-created BO, the entirety of its virtual size is
then backed by system memory, so its RSS is always the same as its virtual
size.

Signed-off-by: Adrián Larumbe <adrian.larumbe@collabora.com>
---
 drivers/gpu/drm/panthor/panthor_drv.c |  1 +
 drivers/gpu/drm/panthor/panthor_gem.c | 12 ++++++++++++
 2 files changed, 13 insertions(+)

diff --git a/drivers/gpu/drm/panthor/panthor_drv.c b/drivers/gpu/drm/panthor/panthor_drv.c
index fa06b9e2c6cd..a5398e161f75 100644
--- a/drivers/gpu/drm/panthor/panthor_drv.c
+++ b/drivers/gpu/drm/panthor/panthor_drv.c
@@ -1363,6 +1363,7 @@ static void panthor_show_fdinfo(struct drm_printer *p, struct drm_file *file)
 
 	panthor_gpu_show_fdinfo(ptdev, file->driver_priv, p);
 
+	drm_show_memory_stats(p, file);
 }
 
 static const struct file_operations panthor_drm_driver_fops = {
diff --git a/drivers/gpu/drm/panthor/panthor_gem.c b/drivers/gpu/drm/panthor/panthor_gem.c
index d6483266d0c2..845724e3fd93 100644
--- a/drivers/gpu/drm/panthor/panthor_gem.c
+++ b/drivers/gpu/drm/panthor/panthor_gem.c
@@ -143,6 +143,17 @@ panthor_gem_prime_export(struct drm_gem_object *obj, int flags)
 	return drm_gem_prime_export(obj, flags);
 }
 
+static enum drm_gem_object_status panthor_gem_status(struct drm_gem_object *obj)
+{
+	struct panthor_gem_object *bo = to_panthor_bo(obj);
+	enum drm_gem_object_status res = 0;
+
+	if (bo->base.pages)
+		res |= DRM_GEM_OBJECT_RESIDENT;
+
+	return res;
+}
+
 static const struct drm_gem_object_funcs panthor_gem_funcs = {
 	.free = panthor_gem_free_object,
 	.print_info = drm_gem_shmem_object_print_info,
@@ -152,6 +163,7 @@ static const struct drm_gem_object_funcs panthor_gem_funcs = {
 	.vmap = drm_gem_shmem_object_vmap,
 	.vunmap = drm_gem_shmem_object_vunmap,
 	.mmap = panthor_gem_mmap,
+	.status = panthor_gem_status,
 	.export = panthor_gem_prime_export,
 	.vm_ops = &drm_gem_shmem_vm_ops,
 };
-- 
2.43.0