overlay: Auatomatically mount debugfs

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

1 files changed, 21 insertions, 0 deletions

diff --git a/overlay/debugfs.c b/overlay/debugfs.c
new file mode 100644
index 00000000..969ec368
--- /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;
+}