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| -rw-r--r-- | docs/tex/nekernel_smp_subsystem.tex | 28 |
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diff --git a/docs/tex/nekernel_smp_subsystem.tex b/docs/tex/nekernel_smp_subsystem.tex new file mode 100644 index 00000000..9a5fe776 --- /dev/null +++ b/docs/tex/nekernel_smp_subsystem.tex @@ -0,0 +1,28 @@ +\documentclass{article} +\usepackage{graphicx} + +\title{NeKernel: The SMP Subsystem} +\author{Amlal El Mahrouss} +\date{\today} + +\begin{document} + +\maketitle + +\section{Abstract} + +{NeKernel is a hybrid based operating system kernel written in modern C++ (C++17/C++20). It features a bootloader, kernel, tools, libraries, and frameworks. This document is about the SMP subsystem of NeKernel} + +\section{Design Overview} + +ne\_kernel is designed with SMP by default. Although it may fallback under classic preemptive round-robin scheduling when unavailable - NeKernel runs best on a SMP based machine. The subsystem goes from the HardwareThreadScheduler to the Hardware Abstraction Layer's Application Processors API. + +\subsection{HardwareThreadScheduler (HTS)} + +HardwareThreadScheduler's main purpose is to make cores all busy with a StackFrame. That StackFrame contains program information (instruction, stack pointers) each task is fairly assigned to a core to then be run by the Application Processors API. + +\subsection{Application Processors (AP)} + +Application Processors (now referred as AP) is the API taking care of multi-core scheduling, very platform dependent (thus its presence on the HAL) it is designed to run tasks passed from the HardwareThreadScheduler system. + +\end{document} |