add ftrace
add ftrace

caijieming-baidu/mdt,bdtbd/mdt,bdtbd/mdt,caijieming-baidu/mdt,caijieming-baidu/mdt,caijieming-baidu/mdt,bdtbd/mdt,bdtbd/mdt,bdtbd/mdt,caijieming-baidu/mdt,caijieming-baidu/mdt,caijieming-baidu/mdt