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

LASAT sysctl interface

modulename: sysctl.ko

configname: CONFIG_LASAT_SYSCTL

Linux Kernel Configuration
└─>LASAT sysctl interface
In linux kernel since version 2.6.12  
source code:
arch/mips/lasat/sysctl.c
depends
CONFIG_LASAT