default or selected kernelversion does not have config value CONFIG_NETLINK_MMAP.
Result is shown for kernelversion 6.5.1
NETLINK: mmaped IO
configname: CONFIG_NETLINK_MMAP
Linux Kernel Configuration
└─>Networking support
└─>Networking options
└─>NETLINK: mmaped IO
In linux kernel since version 3.1 (release Date: 2011-10-24)
This option enables support for memory mapped netlink IO. This
reduces overhead by avoiding copying data between kernel- and
userspace.
If unsure, say N.
reduces overhead by avoiding copying data between kernel- and
userspace.
If unsure, say N.