overlay: Auatomatically mount debugfs
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
diff --git a/overlay/debugfs.c b/overlay/debugfs.c
new file mode 100644
index 0000000..969ec36
--- /dev/null
+++ b/overlay/debugfs.c
@@ -0,0 +1,21 @@
+#include <sys/stat.h>
+#include <sys/mount.h>
+#include <errno.h>
+
+#include "debugfs.h"
+
+int debugfs_init(void)
+{
+ struct stat st;
+
+ if (stat("/sys/kernel/debug/dri", &st) == 0)
+ return 0;
+
+ if (stat("/sys/kernel/debug", &st))
+ return errno;
+
+ if (mount("debug", "/sys/kernel/debug", "debugfs", 0, 0))
+ return errno;
+
+ return 0;
+}