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My OS professor asked for details of architecture, process synchronization, escalonating, deadlocks, threads and how process function but he seem to be convinced that distros have their own implementation of those while I'm pretty sure it is all done by the kernel (which I believe is not changed from distro to distro)...
Anyone can clarify this to me and maybe give me info on where can I get those details as it pertains to the kernel (if in fact that is all handled by the kernel ) ?
Either that, or download a kernel, unpack it, then look in the linux-[version]/Documentation directory. There's plenty of documentation there. Sometimes, the files have easy titles like "preempt-locking.txt". For things like the RCU files, either you have to know where you're going (linux-[version]/Documentation/RCU), or you grep around and hope that a match comes up.
not quite so easy. Sure, all the fundamental services are situated in the kernel, and the kernel has to solve the concurrency problem for itself. But every multithreaded user space application has to solve inter-thread or inter-process communication and synchronization, usually through the use of some thread library. I just don't see where the distro comes into this picture, other than packaging it all up.