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This article mainly introduces the relevant knowledge of the role of the linux kernel, the content is detailed and easy to understand, the operation is simple and fast, and has a certain reference value. I believe you will gain something after reading this article on the role of the linux kernel. Let's take a look at it.

The functions of the linux kernel: 1, manage processes, the kernel is responsible for creating and destroying processes; 2, manage memory, the kernel and memory management subsystem interact through a set of function calls; 3, file system, the kernel establishes a structured file system on unstructured hardware; 4, device control, each setting driver is embedded in the kernel; 5, network management.

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

What can the linux kernel do?

1. Management process:

The kernel is responsible for creating and destroying processes and handling their connections to the outside world (input and output). Different inter-process communication (through signals, pipes, or inter-process communication primitives) is basic to the functions of the entire system and is also handled by the kernel. In addition, the scheduler, which controls how processes share CPU, is part of process management. More generally, the process management activities of the kernel implement the abstraction of multiple processes on top of a single or several CPU.

2. Manage memory:

The memory of the computer is the main resource, and the strategy used to deal with it is critical to system performance. The kernel creates a virtual address space for each of all processes on limited available resources. Different parts of the kernel interact with the memory management subsystem through a set of function calls, from simple malloc/free pairs to more and more complex functions.

3. File system:

Unix is largely based on the concept of a file system; almost anything in Unix can be seen as a file. The kernel builds a structured file system on unstructured hardware, and the result is that file abstraction is widely used in the whole system. In addition, Linux supports multiple file system types, that is, different ways of organizing data on physical media. For example, disks can be formatted into a standard Linux ext3 file system, a commonly used FAT file system, or several other file systems.

4. Equipment control:

Almost every system operation is eventually mapped to a physical device, and with the exception of processors, memory, and very few other entities, any device control operation in all is performed by code specific to the device to be addressed. These codes are called device drivers. Drivers for every peripheral that appears in the system must be embedded in the kernel, from hard disk drives to keyboard and tape drives.

5. Network management:

The network must be managed by the operating system because most network operations are not specific to a particular process: messages entering the system are asynchronous events. Messages must be collected, identified and distributed before a process takes over. The system is responsible for delivering data messages between the program and the network interface. It must control the execution of the program according to the network activities of the program. In addition, all routing and address resolution problems are implemented in the kernel.

This is the end of the article on "what are the functions of the linux kernel?" Thank you for reading! I believe you all have a certain understanding of the knowledge of "what is the role of the linux kernel?" if you want to learn more knowledge, you are welcome to follow the industry information channel.

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