From 573fa2924e7ec0b1144921713bd7259def99877f Mon Sep 17 00:00:00 2001
From: Deepak Khatri <deepaklorkhatri7@gmail.com>
Date: Thu, 25 Jan 2024 22:27:57 +0530
Subject: [PATCH] Add linux kernel improvements projects
---
ideas/linux-kernel-improvements.rst | 76 +++++++++++++++++++++++++++--
1 file changed, 73 insertions(+), 3 deletions(-)
diff --git a/ideas/linux-kernel-improvements.rst b/ideas/linux-kernel-improvements.rst
index c13ba33..a1d1981 100644
--- a/ideas/linux-kernel-improvements.rst
+++ b/ideas/linux-kernel-improvements.rst
@@ -8,9 +8,79 @@ Below are the projects that comes under linux kernel improvements category.
.. card::
**BeagleBone Cape (add-on board) compatibility layer (BB-CCL)**
- ^^^^^^^
+ ^^^^
+
+ - **Goal:** Update the cape compatibility layer for BeagleBone Black, AI-64, and newer boards to support more kernel versions.
+ - **Hardware Skills:** UART, I2C, SPI, ADC, GPIO and PWM
+ - **Software Skills:** C, Python, DeviceTree, Linux kernel
+ - **Possible Mentors:** Deepak Khatri, jkridner
+ - **Expected Size of Project:** 350 hrs
+ - **Rating:** Medium
+ - **Upstream Repository:** various
+ - **References:**
+ - `Beagleboard:BeagleBone cape interface spec <https://docs.beagleboard.org/latest/boards/capes/cape-interface-spec.html>`_
+ - `Device tree how-to blog post <https://beagleboard.org/blog/2022-02-15-using-device-tree-overlays-example-on-beaglebone-cape-add-on-boards>`_
+ - `GSoC 2020 project page <https://elinux.org/BeagleBoard/GSoC/2020_Projects/Cape_Compatibility>`_
+ - `lorforlinux's GSoC project documentation website <https://lorforlinux.github.io/GSoC2020_BeagleBoard.org/>`_
+
+
+ ++++
+
+ :bdg-danger:`High priority` :bdg-success:`Medium complexity` :bdg-danger-line:`Large size`
+
+.. card::
+
+ **Xenomai vs Preempt-RT**
+ ^^^^
+
+ In the growing market of embedded Linux audio devices, engineers more and more face the
+ question "how fast is fast enough?". There is need to provide a framework for testing
+ responsiveness (and consequently minimum latency) for a given platform and evaluate
+ whether it meets the requirements for the application at hand. In 2010, the paper
+ "How fast is fast enough?" by Brown and Martin compared average and worst-case performance
+ of Preempt-rt Linux vs Xenomai on an old BeagleBoard. In this project you will develop code
+ for a test setup that allows to reproduce these tests on more modern SoCs in order to
+ obtain an indirect measure of how much Preempt-rt has improved over the past few years,
+ what is today the gap with Xenomai and reflect on how this impacts specific applications.
+ Goal: Produce a testing suite that allows to evaluate interrupt latency and CPU performance
+ on Xenomai vs Preempt-rt
+
+ - **Hardware Skills:** none
+ - **Software Skills:** C, Linux kernel, Xenomai
+ - **Possible Mentors:** giuliomoro
+ - **Expected Size of Project:** 350 hrs
+ - **Rating:** Medium
+ - **Upstream Repository:** https://xenomai.org
- ToDo
++++
- :bdg-danger:`Priority high` :bdg-primary:`Medium complexity` :bdg-warning-line:`Large size project`
\ No newline at end of file
+.. card::
+
+ **Xenomai kernel for most recent BB boards**
+ ^^^^
+
+ `Xenomai <http://xenomai.org/>`_ is a co-kernel for Linux that allows selected threads on
+ the board to bypass the Linux kernel and deliver hard real-time performance. This is used
+ worldwide in such diverse sectors as manufacturing processes, drones and audio (e.g.:
+ `the Bela project <https://bela.io/>`_ on Beagleaboard boards). The Xenomai core is
+ currently maintained by Siemens and interactions happen through the `official mailing list
+ <https://xenomai.org/mailman/listinfo/xenomai/>`_. Board-specific support is only offered on
+ a small set of SoCs, but it's mostly down to the maintainers of individual boards. Kernels for
+ the Beagleboard family are regularly patched and released by `rcn-ee`, who also occasionally
+ releases Xenomai versions. While 4.9, 4.14 and 4.19 (and newer versions) have been working
+ fine on AM335x devices (e.g.: BeagleBone Black, PocketBeagle), these do not run properly on other
+ devices (e.g.: AM572x-based ones such as Beaglebone-AI). The scope of this project is to offer
+ support for Xenomai kernels across the Beagleboard family and implement a workflow that makes
+ maintenance easier.
+
+ - **Goal:** Fix Xenomai support for newer BB boards, make future maintenance easier.
+ - **Hardware Skills:** none
+ - **Software Skills:** C, Linux kernel, Xenomai
+ - **Possible Mentors:** giuliomoro, Dhruva Gole
+ - **Expected Size of Project:** 350 hrs
+ - **Rating: Medium**
+ - **Upstream Repository:** https://evlproject.org/overview/ https://xenomai.org
+ - **References:**
+ - `Paper: How fast is fast enough? <https://picture.iczhiku.com/resource/paper/WyIEpzspsLtjRXnc.pdf>`_
+
+ ++++
\ No newline at end of file
--
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