CONFIG_HAVE_TIF_NOHZ (not configurable)
configname: CONFIG_HAVE_TIF_NOHZ
Linux Kernel Configuration
└─>General architecture-dependent options
└─>HAVE_TIF_NOHZ
In linux kernel since version 5.1 (release Date: 2019-05-05)
Arch relies on TIF_NOHZ and syscall slow path to implement context
tracking calls to user_enter()/user_exit().
tracking calls to user_enter()/user_exit().