CONFIG_MIPS_MT_SMTC is not available for thedefaultarchitecture x86.
Result is shown for architecture mips

Use all TCs on all VPEs for SMP (DEPRECATED)

modulename: msp_smtc.ko

and/or

malta-smtc.ko

and/or

cevt-smtc.ko

and/or

smtc.ko

configname: CONFIG_MIPS_MT_SMTC

MIPS MT options
└─>Use all TCs on all VPEs for SMP (DEPRECATED)
In linux kernel since version 2.6.17 (release Date: 2006-06-17)  
This is a kernel model which is known as SMTC. This is
supported on cores with the MT ASE and presents all TCs
available on all VPEs to support SMP. For further
information see <http://www.linux-mips.org/wiki/34K#SMTC>.

source code:
arch/mips/pmcs-msp71xx/msp_smtc.c


is selected by
CONFIG_MIPS_CMP