performance tests for RCU

modulename: rcuscale.ko

configname: CONFIG_RCU_SCALE_TEST

Linux Kernel Configuration
└─>Kernel hacking
└─>RCU Debugging
└─>performance tests for RCU
In linux kernel since version 5.1 (release Date: 2019-05-05)  
This option provides a kernel module that runs performance
tests on the RCU infrastructure. The kernel module may be built
after the fact on the running kernel to be tested, if desired.

Say Y here if you want RCU performance tests to be built into
the kernel.
Say M if you want the RCU performance tests to build as a module.
Say N if you are unsure.

source code: