Notes

• Using kthreads and Mutexes - Also general scheduling algorithm advice and debugging

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To Do

• Project 2 - Finish Project 2A, Start on Project 2B

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Code Examples

Simple proc module that spawns a kthread on load (put this in a seperate directory). You might want to use this module as a base for your full penguin module.

• my_thread.c
• Makefile - compiles a my_thread.ko module

Sample bash scripts to control your penguin module. May need to run chmod a+x <script.sh>. Must run in same directory as file penguin.ko.

• load_penguin.sh - wrapper for insmod
• start_penguin.sh - sends a "0" to file /proc/penguin
• stop_penguin.sh - sends a "-1" to file /proc/penguin
• unload_penguin.sh - wrapper for rmmod
• watch_penguin.sh - load in a different window to constantly read status
• watch_syslog.sh - load in a different window to constantly watch output of printk

Binary penguin module so you can see how my implementation works. Just copy this file into your virutal machine and load with insmod or ./load_penguin.sh (above script).

• If you are running the original (64-bit) virtual machine, run this module in your 4.15.4 kernel penguin.ko
• If you are running the alternate (32-bit) virtual machine, run this module in your 4.15.4 kernel penguin.ko

Fine print: Binary penguin distributed "as is". NO guarantee for successful run of real penguin in the wild. Please report any bugs found.