CONFIG_HAVE_OBJTOOL_NOP_MCOUNT (not configurable)

configname: CONFIG_HAVE_OBJTOOL_NOP_MCOUNT

Linux Kernel Configuration
└─>Kernel hacking
└─>HAVE_OBJTOOL_NOP_MCOUNT
In linux kernel since version 6.2 (release Date: 2023-02-19)  
Arch supports the objtool options --mcount with --mnop.
An architecture can select this if it wants to enable nop'ing
of ftrace locations.