CONFIG_DEFERRED_STRUCT_PAGE_INIT is not available for thedefaultarchitecture x86.
Result is shown for architecture 64BIT

Defer initialisation of struct pages to kthreads


Linux Kernel Configuration
└─>Memory Management options
└─>Defer initialisation of struct pages to kthreads
In linux kernel since version 4.1 (release Date: 2015-06-21)  
Ordinarily all struct pages are initialised during early boot in a
single thread. On very large machines this can take a considerable
amount of time. If this option is set, large machines will bring up
a subset of memmap at boot and then initialise the rest in parallel.
This has a potential performance impact on tasks running early in the
lifetime of the system until these kthreads finish the