להשארת פרטים
פיתוח תוכנה Linux Internals and Kernel Development
מספר הקורס 5913 40 סה"כ שעות אקדמאיות
5 מפגשים
מעניין אותי לשמוע עוד 
קורס לקבוצות
Overview
This course focuses on the basic elements of the Linux kernel, which allow programmers to build modules and device drivers. The students will gain a general understanding of the basic tools and interfaces, in order to successfully modify features and develop new aspects of the kernel. During the labs the students will build a full device driver including hardware access and interrupt handling
On Completion, Delegates will be able to
Explain the core elements of the Linux kernel
Be able to use the code for modifying and building a new modules
Build complex kernel modules
Debug a kernel module and a kernel oops
Explain the way the kernel manages memory
Explain the use of interrupt handlers
Understand the flow between user space and kernel space
Understand the network sub system and write network modules
Who Should Attend
Programmers and software designers who plan to use Linux kernel below the application level and to develop kernel space modules and device drivers
Introduction to the Linux kernel
- Kernel overview
- What is Open source
- The system boot process
- Linux kernel history and versions
- What is a device driver
- Kernel configuration and compilation
- Kernel build system – Makefiles and KConfigs
- Kernel command line
- Downloading the source
- Building the kernel
Writing a simple kernel module
- A simple kernel module structure
- Implicit steps of compiling modules in Linux kernel version 2.6
- Using shell commands to manipulate modules
- The kernel log
- Using the printk function
Runtime information
- Passing parameters to the module
- Exporting symbols
- The /proc file system
- Sysfs
Memory Management
- Memory areas
- Memory page frames
- Requesting and releasing page frames
- Allocating contiguous virtual memory area
- The slab and slob allocators
- Memory caches and allocations
- Managing slabs
- Creating and destroying caches
- User space memory access
Implementing a character device file
- The VFS structure
- Initialization and termination
- Opening the device file
- IOCTL
- Implementing base operations
Moving data between kernel and user
- Mapping memory
- virtual file systems
- signals
- netlink
Debugging
- Kernel configuration for debugging
- KGDB
- Kdb
- Trace tools
Locking mechanisms
- Locking requirements
- Preemption
- Atomic bit operations
- Interrupt disabling
- Spin lock
- Semaphores
Linux Scheduler
- Process and thread
- Scheduling policies
- Priorities
- Kernel tasks
- task_struct structure
- SMP scheduling
Interrupt handling
- Hardware interrupt handling basics
- Interrupt handler and control
- Low level handling
- Wait queues technique
- Threaded interrupts
Bottom halves
- Differing work
- Using software interrupts
- Tasklets
- Timers & RTC
- Work queues
Network device drivers
- The layer model
- Registration and un-registration
- Socket buffers, allocations and manipulations
- Network headers
- Softnet basics
- Packet reception
- Packet transmission
- NAPI
- Writing a simple dummy device module
- Network queues
- Netlink
- Ip layer and routing
- Network filters
Block Layer and VFS
- Block Layer
- Block device drivers
- VFS
- IO schedulers
- DMA
Delegates should have a working knowledge with Linux user space programming
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