CONFIG_SYS_SUPPORTS_MULTITHREADING is not available for thedefaultarchitecture x86.
Result is shown for architecture mips
CONFIG_SYS_SUPPORTS_MULTITHREADING (not configurable)
configname: CONFIG_SYS_SUPPORTS_MULTITHREADING
Linux Kernel Configuration
└─>Kernel type
└─>SYS_SUPPORTS_MULTITHREADING