CONFIG_DYNAMIC_FTRACE_WITH_REGS (not configurable)

configname: CONFIG_DYNAMIC_FTRACE_WITH_REGS

Linux Kernel Configuration
└─>Kernel hacking
└─>Tracers
└─>DYNAMIC_FTRACE_WITH_REGS
In linux kernel since version 3.1 (release Date: 2011-10-24)  

is selected by
CONFIG_FPROBE