• Linux Kernel
  • Subsystems selected
  • Notes
  • Extras
  • Readings

Linux Kernel

For people who are very new to kernel and kernel development:

• I will highly recommend you to first complete MIT 6.1810: Operating System Engineering Labs and Readings together with a linux kernel book like Understanding the Linux Kernel 3e: From I/O Ports to Process Management.
• This book goes into much details which is not needed, just sift through the chapters along with xv6 book in the MIT course.
• Look into theory and complete the labs.

Once you are done with the course, you will have good background to explore the linux kernel source.

Subsystems selected

1. Devicetree
2. DRM (GPU)
3. eBPF (Tracing)
4. Bcachefs (Filesystem)

Notes

• Debugging
  • Step 1 : Getting and understanding the logs
  • Step 2 : Debugging with GDB and QEMU/libvirt
  • Extras
• Finding Bugs
• Event tracing
  • eBPF tracing(TODO)
• Kernel Concepts
  • Interrupts
    • Syscalls
• Kernel Core APIs (TODO)
  • Core Utilities
    • Notification Mechanisms
    • Printk
    • Symbols and Assembler Notations
    • Workqueues
  • Kobjects
• Kernel Subsystems
  • Devicetree
    • Devicetree Yamls
    • Testing yaml dtschemas
  • Graphics (TODO)
• Implementations
  • Pipes and Splices
• Kernel Mentorship Program (TODO)
  • Prerequisites (TODO)
  • Setting up the Kernel (TODO)

Extras

• Kernel Boot Process (TODO)
• Syzkaller Notes
• eBPF Tracing (TODO)
• RCU in Kernel (TODO)

Readings

1. Linux Kernel Development by Robert Love (3rd Edition) Amazon Link
2. Linux Device Drivers 3ed by Johnathan Corbet, Alessandro Rubini, and Greg Kroah-Hartman Amazon Link
3. Understanding the Linux Kernel 3e: From I/O Ports to Process Management Amazon Link
4. Design of the UNIX Operating System by Maurice J. Bach (AT&T Bell Labs) Amazon Link

Other readings are mentioned in the respective notes' README.md