CONFIG_ACPI_SRAT (not configurable)

modulename: srat_32.ko

configname: CONFIG_ACPI_SRAT

Linux Kernel Configuration for x86
└─>Processor type and features
└─>ACPI_SRAT
In linux kernel since version 2.6.12  
source code:
arch/x86/kernel/srat_32.c
selects
CONFIG_ACPI_NUMA