pok-kernel with more schedulers

Extended MIT xv6 kernel with Copy-on-Write fork, MLFQ scheduler, and lazy memory allocation.

Lab 2 for [CS-1217] Operating Systems 💀💀

Implementing a multilevel feedback queue

Kernel and user-space extensions to MIT's xv6 teaching OS — across both x86 and RISC-V — adding new system calls, a clone()-based threading library with ticket locks, a multi-level feedback queue scheduler, and shell utilities.

C program implementing various scheduler algorithms... namely FCFS, SJF, RR, and MLFQ. Took long enough to make a grown man cry but hey! all schedulers are working :)