drm/v3d: Add gpu_gem_info node via debugfs

[platform/kernel/linux-rpi.git] / drivers / gpu / drm / v3d / v3d_debugfs.c

diff --git a/drivers/gpu/drm/v3d/v3d_debugfs.c b/drivers/gpu/drm/v3d/v3d_debugfs.c
index b7b296b..0700671 100644 (file)
--- a/drivers/gpu/drm/v3d/v3d_debugfs.c
+++ b/drivers/gpu/drm/v3d/v3d_debugfs.c
@@ -237,11 +237,81 @@ static int v3d_measure_clock(struct seq_file *m, void *unused)
        return 0;
 }
 
+struct v3d_gem_info_data {
+       struct drm_file *filp;
+       struct seq_file *m;
+};
+
+static int v3d_gem_one_info(int id, void *ptr, void *data)
+{
+       struct drm_gem_object *obj = (struct drm_gem_object *)ptr;
+       struct v3d_gem_info_data *gem_info_data = data;
+       struct v3d_file_priv *v3d_priv = gem_info_data->filp->driver_priv;
+       struct drm_v3d_file_private *pid_priv = &v3d_priv->priv;
+
+       if (!obj) {
+               DRM_ERROR("failed to get drm_gem_object\n");
+               return -EFAULT;
+       }
+
+       drm_gem_object_get(obj);
+
+       seq_printf(gem_info_data->m,
+                       "%5d\t%5d\t%4d\t%4d\t\t%4d\t0x%08zx\t0x%x\t%4d\t%4d\t\t"
+                       "%4d\t\t0x%p\t%6d\n",
+                       pid_priv->pid,
+                       pid_priv->tgid,
+                       id,
+                       kref_read(&obj->refcount) - 1,
+                       obj->handle_count,
+                       obj->size,
+                       0,
+                       0,
+                       obj->dma_buf ? 1 : 0,
+                       obj->import_attach ? 1 : 0,
+                       obj,
+                       obj->name);
+
+       drm_gem_object_put(obj);
+
+       return 0;
+}
+
+int v3d_debugfs_gem_info(struct seq_file *m, void *data)
+{
+       struct drm_info_node *node = (struct drm_info_node *)m->private;
+       struct drm_minor *minor = node->minor;
+       struct drm_device *drm_dev = minor->dev;
+       struct v3d_gem_info_data gem_info_data;
+       struct drm_file *filp;
+
+       gem_info_data.m = m;
+
+       seq_puts(gem_info_data.m,
+                       "pid\ttgid\thandle\trefcount\thcount\tsize\t\tflags\t"
+                       "pfnmap\texport_to_fd\timport_from_fd\tobj_addr\t\t"
+                       "name\n");
+
+       mutex_lock(&drm_dev->struct_mutex);
+       list_for_each_entry(filp, &drm_dev->filelist, lhead) {
+               gem_info_data.filp = filp;
+
+               spin_lock(&filp->table_lock);
+               idr_for_each(&filp->object_idr, v3d_gem_one_info,
+                               &gem_info_data);
+               spin_unlock(&filp->table_lock);
+       }
+       mutex_unlock(&drm_dev->struct_mutex);
+
+       return 0;
+}
+
 static const struct drm_info_list 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},
+       {"gpu_gem_info", v3d_debugfs_gem_info, 0},
 };
 
 void