Configure for minimal memory footprint

configname: CONFIG_SLUB_TINY

Linux Kernel Configuration
└─>Memory Management options
└─>Slab allocator options
└─>Configure for minimal memory footprint
In linux kernel since version 4.14.326 (release Date: 2023-09-23)  
Configures the slab allocator in a way to achieve minimal memory
footprint, sacrificing scalability, debugging and other features.
This is intended only for the smallest system that had used the
SLOB allocator and is not recommended for systems with more than
16MB RAM.

If unsure, say N.