Hello everyone, I am the Intelligence Guy~ In Linux driver development, have you ever encountered the problem of how to save private data for different device instances? For example, a USB camera needs to store resolution parameters, and a GPIO device needs to record interrupt handler functions. Directly modifying the <span>struct device</span> structure? This would … Read more
Original:https://mp.weixin.qq.com/s/JX5PS7Cxs9mRzzl96cwzRg 1. Introduction A significant portion of Linux power management deals with functionalities such as Hibernate, Suspend, and Runtime PM. These functionalities are based on a similar logic, known as the “Power Management Interface.” The code for this interface is implemented in files such as “include/linux/pm.h” and “drivers/base/power/main.c.” Its main functions are: to define Device … Read more
This is a short document describing the preferred coding style for the Linux kernel. Coding style is very personal, and I won’t force my views on anybody, but this is what goes for anything that I have to be able to maintain, and I’d prefer it for most other things too. Please at least consider … Read more
An embedded Linux system can typically be divided into four layers from a software perspective:1. Boot Loader.It includes the boot code (optional) embedded in the firmware and the Boot Loader itself.2. Linux Kernel.A customized kernel specific to the embedded board and the kernel’s boot parameters.3. File System.Including the root file system and file systems built … Read more
Source: MCU Fun ID: mcu168 An embedded Linux system can typically be divided into four layers from a software perspective: 1. Boot Loader. This includes the boot code embedded in firmware (optional) and the Boot Loader itself. 2. Linux Kernel. A customized kernel specific to the embedded board along with kernel boot parameters. 3. File … Read more
An embedded Linux system can typically be divided into four layers from a software perspective:1. Boot Loader. This includes the boot code (optional) embedded in firmware and the Boot Loader itself.2. Linux Kernel. A customized kernel specific to the embedded board along with kernel boot parameters.3. File System. This includes the root file system and … Read more
Version Information Host Machine: <span>ubuntu 20.04.6 LTS (Focal Fossa)</span> Virtual Machine: <span>ubuntu 20.04.6 LTS (Focal Fossa)</span> The steps for installing the host machine are omitted, as they are no different from installing a virtual machine in <span>vmware</span>. It is important to ensure that <span>Intel VT-x</span> is enabled. If the virtual machine reports <span>This platform does … Read more
🏖️ Zblock Compressed Slab Memory Allocator Expected to Land in Linux 6.16 Kernel With only one month left until the merge window for Linux 6.16 opens, the new Zblock allocator has been incorporated into Andrew Morton’s “MM” memory management code tree, and is highly likely to appear in the next kernel merge cycle.The design goal … Read more
As global energy consumption in data centers continues to rise, finding ways to reduce energy consumption while meeting the increasing demand for computing power has become an urgent issue. Recently, researchers from the University of Waterloo in Canada proposed an innovative solution: by modifying approximately 30 lines of code in the Linux kernel’s network stack, … Read more
(Click the public account above to quickly follow) Author: David Both, Translation: Linux China/penghuster linux.cn/article-8807-1.html If you have good articles to submit, please click → here for details Have you ever wondered how an operating system can execute applications? This article will unveil the mysteries of operating system booting and startup. Understanding the operating system … Read more