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Modular monolithic kernel example is Linux.
don't need to confuse on monolithic and modular kernel. if we need to divide a single module of kernel in separate module to make handle easy we can do at the configure time of kernel but these kernel module having only in kernel space.
Monolithic Kernel
- single binary file
- all drivers include in kernel itself.
Modular kernel
- Multiple files for kernel
- Drivers can be loaded or unloaded into kernel using modprob command, see man page of lsmod, modprob etc when
- Almost all drivers are build and linked against kernel
actual mean of modular kernel in linux :
some part of the system core will be located in independent files called modules that can be added to the system at run time. Depending on the content of those modules as
1. only loading drivers if a device is actually found
2. only load a filesystem if it gets actually requested
3. only load the code for a specific (scheduling/security/whatever) policy when it should be evaluated
Those modules are still running in the kernel space and not in user space, so the kernel architecture is still monolithic.
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