Memory Management in Linux Kernel

Memory Management in Linux Kernel, available at $39.99, has an average rating of 4.23, with 44 lectures, based on 155 reviews, and has 1480 subscribers.

You will learn about Knowledge of Memory management in Linux Kernel This course is ideal for individuals who are Developers curious about learning memory management in Linux Kernel It is particularly useful for Developers curious about learning memory management in Linux Kernel.

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Summary

Title: Memory Management in Linux Kernel

Price: $39.99

Average Rating: 4.23

Number of Lectures: 44

Number of Published Lectures: 44

Number of Curriculum Items: 44

Number of Published Curriculum Objects: 44

Original Price: $27.99

Quality Status: approved

Status: Live

What You Will Learn

Knowledge of Memory management in Linux Kernel

Who Should Attend

Developers curious about learning memory management in Linux Kernel

Target Audiences

Developers curious about learning memory management in Linux Kernel

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

Course Curriculum

Chapter 1: Memory Management Part 1

Lecture 1: What is Physical Address Space

Lecture 2: How to view memory map/physical address space in Linux – /proc/iomem

Lecture 3: Running 32-bit Buildroot image in QEMU

Lecture 4: View/Change RAM Size in QEMU – /proc/meminfo, free -m

Lecture 5: Virtual Address Space for 32-bit processors

Lecture 6: Why kernel shares its address space for all processes

Lecture 7: 64-bit Memory Map

Lecture 8: Converting Virtual address to physical address and vice versa

Lecture 9: Pages – PAGE_SIZE macro

Lecture 10: struct page

Lecture 11: Page Fault

Lecture 12: Page Faults when memory is 4 KB

Lecture 13: User space virtual address space

Lecture 14: Kernel Virtual address space – low mem and high mem

Lecture 15: Low Memory

Lecture 16: How can i find out how much is my low mem and high mem

Lecture 17: High Memory

Lecture 18: Memory Allocation Mechanism

Lecture 19: kmalloc and kfree

Lecture 20: Linux Kernel Module example of kmalloc and kfree

Chapter 2: Memory Management Part 2

Lecture 1: Zones

Lecture 2: Buddy System allocator

Lecture 3: Virtual Kernel Memory Layout

Lecture 4: Can i use virt_to_phy to get physical address of kmalloc pointer

Lecture 5: Example of passing various GFP_FLAGS to kmalloc

Lecture 6: Maximum size that can be allocated using kmalloc

Lecture 7: What happens if we dont free memory allocated using kmalloc

Lecture 8: ksize

Lecture 9: kzalloc

Lecture 10: krealloc

Lecture 11: Example to demonstrate kmalloc is contiguous in physical and virtual

Lecture 12: vmalloc

Lecture 13: Maximum size that can be allocated using vmalloc

Lecture 14: vmalloc vs kmalloc

Lecture 15: Maximum size that can be allocated using vmalloc on 32-bit

Lecture 16: Why is VmallocUsed always 0

Lecture 17: Can i use ksize with vmalloc

Lecture 18: Maximum amount of memory that can be allocated using vmalloc

Lecture 19: What happens when i do kmalloc of 0 zero bytes

Lecture 20: What happens when i do vmalloc of 0 bytes

Lecture 21: Kernel Stack

Lecture 22: CONFIG_FRAME_WARN

Lecture 23: check_stack.pl script

Chapter 3: Resources

Lecture 1: Resources

Instructors

Linux Trainer
Trainer at Linux Weekend Learning

Rating Distribution

1 stars: 6 votes

2 stars: 7 votes

3 stars: 35 votes

4 stars: 60 votes

5 stars: 47 votes

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