As I mentioned previously, the Linux kernel has a lot of kernel modules and drivers that are already implemented and available inside the source code of the Linux kernel. A number of them, being so many, are also available outside the Linux kernel source code. Having them outside not only reduces the boot time by not initializing them at boot time, but is done instead at the request and needs of users. The only difference is that the loading and unloading of the modules requires root access.
Loading and interacting with the Linux kernel modules requires logging information to be made available. The same happens for any kernel module dependencies. The logging information is available through the dmesg command and the level of logging enables manual configuration using the loglevel parameter or it can be disabled with the quite parameter. Also for the kernel dependencies, information about them is available inside the /lib/modules/<kernel-version>/modules.dep file...
