What is the use of linux kernel

The functions of the Linux kernel: 1. Responsible for the creation and destruction of processes, completion of inter-process communication, and process input and output; 2. Memory management; 3. File system management; 4. Responsible for equipment Control, the kernel contains driver code for accessing hardware devices on the platform; 5. Responsible for network functions.

#The operating environment of this tutorial: linux7.3 system, Dell G3 computer.

What is the use of the linux kernel?

The Linux kernel is the core of a large and complex operating system. Just like the human brain, it handles various requests and has five major modular functions. , including: process management, memory management, file system management, device control and network management. The following is a detailed introduction:

1. Process management

The Linux kernel is responsible for process creation and destruction, and completes communication between processes, as well as process input and Output; Moreover, process management controls the use of one or more CPU resources on the Soc by multiple processes.

2. Memory management

The usage strategy of memory resources is particularly important for the performance of the operating system. The memory establishes a virtual address space for each process based on limited memory resources. Different functional parts of the kernel interact with the memory management subsystem through a set of function calls, making communication efficient and simple.

3. File system management

In the Linux operating system, almost anything can be viewed as a file. The kernel uses a large number of structures such as Kobject to combine a bunch of Unstructured hardware is organized into a multi-layered data system. In addition, Linux supports multiple file system types, such as EXT4, etc.

4. Device control

Almost any operating system eventually runs on a physical platform, and the kernel contains driver code that accesses the hardware devices on the platform.

5. Network functions

Most network operations are not associated with specific processes because the transmission of data packets is an asynchronous event. Before an application accesses a data packet, the kernel completes tasks such as collection, identification, and distribution of data packets.

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