These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / drivers / gpu / drm / virtio / virtgpu_debugfs.c

diff --git a/kernel/drivers/gpu/drm/virtio/virtgpu_debugfs.c b/kernel/drivers/gpu/drm/virtio/virtgpu_debugfs.c
new file mode 100644 (file)
index 0000000..5122639
--- /dev/null
+++ b/kernel/drivers/gpu/drm/virtio/virtgpu_debugfs.c
@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2015 Red Hat, Inc.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial
+ * portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <linux/debugfs.h>
+
+#include "drmP.h"
+#include "virtgpu_drv.h"
+
+static int
+virtio_gpu_debugfs_irq_info(struct seq_file *m, void *data)
+{
+       struct drm_info_node *node = (struct drm_info_node *) m->private;
+       struct virtio_gpu_device *vgdev = node->minor->dev->dev_private;
+
+       seq_printf(m, "fence %llu %lld\n",
+                  (u64)atomic64_read(&vgdev->fence_drv.last_seq),
+                  vgdev->fence_drv.sync_seq);
+       return 0;
+}
+
+static struct drm_info_list virtio_gpu_debugfs_list[] = {
+       { "irq_fence", virtio_gpu_debugfs_irq_info, 0, NULL },
+};
+
+#define VIRTIO_GPU_DEBUGFS_ENTRIES ARRAY_SIZE(virtio_gpu_debugfs_list)
+
+int
+virtio_gpu_debugfs_init(struct drm_minor *minor)
+{
+       drm_debugfs_create_files(virtio_gpu_debugfs_list,
+                                VIRTIO_GPU_DEBUGFS_ENTRIES,
+                                minor->debugfs_root, minor);
+       return 0;
+}
+
+void
+virtio_gpu_debugfs_takedown(struct drm_minor *minor)
+{
+       drm_debugfs_remove_files(virtio_gpu_debugfs_list,
+                                VIRTIO_GPU_DEBUGFS_ENTRIES,
+                                minor);
+}