Udemy Memory Management in Linux Kernel

Linux Kernel Programming - Memory Management in Deep


What you'll learn

• Knowledge of Memory management in Linux Kernel

Requirements

• Should be able to write/compile/load/unload Hello World Linux Kernel Modules

Description
Update: 16th Oct 2020: Added Notes/Examples used in the course
What will you learn from this course?

• Physical Address space of processor and how to view it in Linux
• Virtual Address space of processor
• Kernel and User space virtual address space
• Pages and Page Fault
• How to convert virtual address into physical address and the format specifiers used to print
• Low Memory and High Memory
• Memory Allocation Mechanism - Buddy Allocator
• Zones - /proc/buddyinfo
• Dynamic Memory Allocation in Linux Kernel
• Various flags used in kmalloc - GFP_KERNEL, GFP_ATOMIC, GFP_DMA
• Differences between kmalloc and vmalloc
• What happens when you pass 0 in kmalloc and vmalloc
• Kernel Stack

API's covered in this course:

• virt_to_phys
• phys_to_virt
• kmalloc
• kfree
• krealloc
• ksize
• vmalloc
• vfree

Commands used in this course:

• qemu-system-x86

Who this course is for:

• Developers curious about learning memory management in Linux Kernel