CONFIG_FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY (not configurable)

configname: CONFIG_FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY

Linux Kernel Configuration
└─>Kernel hacking
└─>Tracers
└─>FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY
In linux kernel since version 5.2 (release Date: 2019-07-07)