diff --git a/sys/dev/drm/drmP.h b/sys/dev/drm/drmP.h
index 9c5f4a470c6..cad2cee623a 100644
--- a/sys/dev/drm/drmP.h
+++ b/sys/dev/drm/drmP.h
@@ -148,6 +148,8 @@ MALLOC_DECLARE(DRM_MEM_CTXBITMAP);
 MALLOC_DECLARE(DRM_MEM_SGLISTS);
 MALLOC_DECLARE(DRM_MEM_DRAWABLE);
 
+SYSCTL_DECL(_hw_drm);
+
 #define DRM_MAX_CTXBITMAP (PAGE_SIZE * 8)
 
 				/* Internal types and structures */
diff --git a/sys/dev/drm/drm_drv.c b/sys/dev/drm/drm_drv.c
index 1fb8342d567..c690c34dfa3 100644
--- a/sys/dev/drm/drm_drv.c
+++ b/sys/dev/drm/drm_drv.c
@@ -133,6 +133,9 @@ static struct cdevsw drm_cdevsw = {
 
 static int drm_msi = 1;	/* Enable by default. */
 TUNABLE_INT("hw.drm.msi", &drm_msi);
+SYSCTL_NODE(_hw, OID_AUTO, drm, CTLFLAG_RW, NULL, "DRM device");
+SYSCTL_INT(_hw_drm, OID_AUTO, msi, CTLFLAG_RDTUN, &drm_msi, 1,
+    "Enable MSI interrupts for drm devices");
 
 static struct drm_msi_blacklist_entry drm_msi_blacklist[] = {
 	{0x8086, 0x2772}, /* Intel i945G	*/ \