Linux Kernel Fundamentals Training in Shreveport

Enroll in or hire us to teach our Linux Kernel Fundamentals class in Shreveport, Louisiana by calling us @303.377.6176. Like all HSG classes, Linux Kernel Fundamentals may be offered either onsite or via instructor led virtual training. Consider looking at our public training schedule to see if it is scheduled: Public Training Classes
Provided there are enough attendees, Linux Kernel Fundamentals may be taught at one of our local training facilities.

Answers to Popular Questions:

 
Yes, this class can be tailored to meet your specific training needs.
Yes, we provide Linux Unix consulting services.
Yes, group discounts are provided.

Course Description

 
This 5-day course will provide a fundamental knowle dge of the internals of the Linux kernel. The focus is on understanding the workings of the kernel, and not the theory. The c ourse is valuable to any system administrator who seeks to have a greater understanding of the Linux ke rnel. The course is based on Linux kernel 2.6.32 as modified for RHEL/CentOS version 6.3. For demons trations, the course uses the cscope utility to show source files, and the crash utility to demonstrate their use in a live kernel. This course is also the basis for additional traini ng on writing kernel driver s and kernel debugging.
Course Length: 5 Days
Course Tuition: $2400 (US)

Prerequisites

As this is an advanced level course, students must have taken courses in the following subjects: Linux Fundamentals, Linux System Administration, and C Programming.

Course Outline

 

1. Course Overview
Introduction
Course Prerequisites
System Environment
Conventions Used in the Studen Materials
Command Prompts
Keyboard Usage
Typefaces
References

2. Linux Kernel Introduction
Operating Systems and Kernels
Definition of Terms
Modes of Operations
Approaches to Kernel Design
Standards and Common Interfaces
The Impact of Architecture
Along Came Linux
History of Linux
Linux Kernel Versions
Some Linux Distributions
Linux Kernel Websites
Linux Kernel Organization
Data Flow between Kernel and
Applications
Copying Buffers
The printk Statement
The /proc Directory
The /sys Directory

3. Linux Kernel Source
Installing Kernel Source
CentOS Source Install
Source Installation
Updating Kernel Source
kernel.org Source Install
Downloading Kernel Source
Installing Kernel Source
Updating Kernel Soure
Patching the Kernel
View of Kernel Source
Finding References
Kernel Symbol Tables
The System.map File
The kallsyms File
Searching with Linux Commands
The cscope Command
Starting cscope
Searching the Source Files
Navigating the Search Results
Kernel Programming Style
C Language Usage
Other Kernel Coding Conventions
Opaque Types
Explicitly Sized Types
Byte Order
Header Files
Inline Assembly
Common Kernel Datatypes
 Linked Lists
Manipulating Linked Lists
Traversing Linked Lists
Red Black Tree

4. Building the Linux Kernel
The Build Environment
Steps for Building Kernel
Creating a Configuration File
Editing the Configuration File
The gconfig Utility
Configuration Options
Building the Kernel
RPM Build of Kernel
The kernel ABI (kABI)
Modify Kernel Specifications Script
Build the RPM File
Non-RPM Kernel Build
Setting the Kernel Version Information
Building the Kernel
Installation of Modules
Installation of Kernel
Using the crash Utility
Options to crash Utility
Analyzing the Running Kernel
The crash Commands

5. Booting the Kernel
Unit Overview
System Startup
Master BootRecord (MBR)
The Boot Loader
Grand Unified Bootloader (GRUB)
Linux Loader (LILO)
Other Boot loaders
Loading the Linux Kernel
Kernel Image File
The Initial RAM Disk
Initial RAM File System (initramfs)
Kernel Configuration Parameters
Starting the Linux Kernel
The bzImage File
Architecture Dependent Initialization
The start_kernel() Function

6. Process Data Structures
The Process Descriptor
The task_struct Structure
The Kernel Process Stack
Process Identifiers
Process Relationships
Linux Threads
Process Credentials
Process Resource Limits
Understanding Memory
Virtual (linear) Memory
The Memory Descriptor
Memory Areas
Page Tables
Process File Structure
The fs_struct Object
The files_struct Object

7. Process Management
Process Creation
Copy-on-Write (COW)
fork(), clone(), and vfork()
exec() Family of System Calls
Process States
The rq Structure
Wait Queues
Process Priority
Real-Time Processes
Scheduling Policy
Completely Fair Scheduler
Scheduler Domains
Control Groups (cgroups)
Scheduler Classes
Fair Class Scheduling
Idle Class Scheduling
Real-time Scheduling
Context Switching
Signal Handling
Signal Definitions
Signal Data Structures
Delivering a Signal
Process Destruction
Parent Notification
The sys_wait4() System Call

8. Memory Management
Unit Overview
The Memory Page
Memory Zones
Page Frames
Buddy System Algorithm
gfp_mask Flags
Allocating and Releasing Page Frames
Slab Allocator
Slab Allocator Design
Slab Allocator Data Structures
Cache Attributes
Slab Allocator Interface
Handling Memory Requests
Page Frame Reclamation
General Reclamation Heuristics
Invoking Reclamation
Page Frame Swapping
Page Faults

9. Virtual File System
Common File Model
VFS Data Structures
The super_block Structure
The super_block Operations
The File System Type
Mounting File Systems
The Inode Structure
The dentry Structure
The File Structure
File Locks
Block I/O Layer
Generic Block Layer
I/O Scheduler

10. Interrupt and Exceptions
Interrupt Signals
Interrupts
Interrupt Context
Interrupt Execution Flow
Interrupt Vectors
Interrupt Handlers
Controlling Interrupts
Bottom Halves
Softirqs
Tasklets
Work Queues
Exceptions
Exception Vectors
Exception Handlers
Oops and Panics
System Calls
System Call Interface
Kernel Implementation of System Calls
Existing a System Call
The strace Command

11. Kernel Synchronization
Impact of Preemption
Protecting Critical Regions
Race Conditions
Defining Critical Regions
Synchronization Primitives
Per CPU Variables
Atomic Operations
Optimization and Memory Barriers
Spin Locks
Seqlocks
Semaphores
Read Copy Update (RCU)
Controlling Preemption
The Big Kernel Lock (BKL)
Preemption Primitives

12. Time Management
Basic Timer Variables
The Tick Rate
Understaing Jiffies
Kernel Time versus User Time
Nanosecond Timing
Hardware Timers
Common Hardware Timers
The clocksource Structures
Understanding High Resolution Timing
High ResolutionStructures
Per CPU and Broadcast Clocks
Clock Interrupt Handling
The Clock Event Device
Dynamic Timers
The Tick behind Tickless Timing

13. Linux Device Model
I/O Architecture
I/O Ports
I/O Interfaces and Controllers
Dedicated I/O Interfaces
General-Purpose I/O Architecture
The sysfs File System
kobject, kset, and kibj_type Structures
The sysfs_dirent Structure
Kobject Inheritance
Putting it Together
Device Files
The Role of udev
Kernel Events Layer
The lshw Command

14. Linux Kernel Modules
Module Overview
Compiling the Module
Managing Modules
The insmod Command
The rmmod Command
The Ismod Command
The modprobe Command
The modinfo Command
Signing External Modules
kABI Compliance
Additional- Examples

 

Course Directory [training on all levels]

Upcoming Classes
Gain insight and ideas from students with different perspectives and experiences.

Linux Unix Uses & Stats

Linux Unix is Used For:
Desktop Mainframe Computers Mobile Devices Embedded Devices
Difficulty
Popularity
Year Created
1991/1971
Pros
Performance:
Linux supports many efficient tools and operates them seamlessly. Because it's architecture is lightweight it runs faster than both Windows 8.1 and 10. 
 
Security:
Because Linux is an open-source software,  anyone can contribute code to help enhance the users’ experience i.e., adding features, fixing bugs, reducing security risks, and more.
 
 
Software Development:
The terminal in Linux is a *wild card*. You can do almost anything with it. This includes software installation, application and server configurations, file system management, and etc.
 
Large-scale:
Open-source projects benefit from having an attentive community. As a result, Linux is more secure than Windows. Instead of installing anti viruses to clean malware, you just have to stick to the recommended repositories. 
 
Efficient: 
Developers have the convenience of running servers, training machine learning models, accessing remote machines, and compiling and running scripts from the same terminal window. 
 
Free: 
Linux is free (you can put it on as many systems as you like) and you can change it to suit your needs.
Cons
Learning Curve: 
Linux is not for everyone, there is a learning curve in switching to Ubuntu. To actually learn Linux efficiently would take a user one to several years.
 
No Tech Support:
Unlike Windows, there isn’t a dedicated tech support, so getting help for things is up to you. 
 
Designer Compatabilty:
Linux is not as user friendly as Windows or as ‘straight out of the box design’ As an example for design choices, Adobe hasn’t released any of its products to Linux users. So it’s impossible to run them directly. The Ubuntu alternative is a free software called GIMP. 
 
Gaming Capabilities: 
Most games aren’t available in Linux. But that’s not to say you can’t make it happen, it's just not as easy.   
Linux Unix Job Market
Average Salary
$85k-$105k
Job Count
n/a
Top Job Locations

New York City
Boston
San Francisco 

Complimentary Skills to have along with Linux Unix
The following are types of jobs that may require Linux skills.  The top 15 job titles on Dice.com that mention Linux in their postings are:
- DevOps Engineer
- Software Engineer
- Java Developer
- Systems Engineer
- Systems Administrator
- Senior Software Engineer
- Network Engineer
- Python Developer
- Linux Systems Administrator
- Software Developer
- System Administrator
- Linux Administrator
- Linux Engineer
- Senior Java Developer
- C++ Developer

Interesting Reads Take a class with us and receive a book of your choosing for 50% off MSRP.