CONFIG_ALPHA_TSUNAMI is not available for the selected architecture x86.
Result is shown for architecture alpha

CONFIG_ALPHA_TSUNAMI (not configurable)

modulename: core_tsunami.ko

configname: CONFIG_ALPHA_TSUNAMI

Linux Kernel Configuration
└─>System setup
└─>ALPHA_TSUNAMI
In linux kernel since version 2.6.12 )
source code:
arch/alpha/kernel/core_tsunami.c