System Administration + Linux Kernel mkfs.ext4 – What it actually creates September 26, 2023 Pipe and Splice September 19, 2023 Syscall latency… and some uses of speculative execution September 12, 2023 sos r
This tutorial shows how to trace the Linux Kernel code (i.e. record variable values at arbitrary code locations) without having to setup regular debugging connection. This allows tracing targets that would otherwise be hard to debug (e.g. embedded devices without JTAG, desktops/laptops incompatibl...
flag:该参数用于控制函数的行为,最常用的是GFP_KERNEL,表示当当前没有足够内存分配时,进程进入睡眠,待系统将缓冲区中的内容SWAP到硬盘中后,获得足够内存后再唤醒进程,为其分配。 使用GFP_ KERNEL 标志申请内存时,若暂时不能满足,则进程会睡眠等待页,即会引起阻塞,因此不能在中断上下文或持有自旋锁的时候使用GFP_KE...
mm->uprobes_state.xol_area) { /*【__create_xol_area函数功能】 * 为当前进程分配指令槽, 并为其分配指令槽的页, 并创建对应vma添加到进程mm中 */ __create_xol_area(0) { struct xol_area *area = kmalloc(sizeof(*area), GFP_KERNEL) uprobe_opcode_t in...
Demystifying the Kernel Boot Sequence: From ‘Starting Kernel…’ to Userspace” As kernel developers, we often find ourselves writing device drivers—pieces of code that are typically registered usingmodule_init()in the Linux kernel. But have you ever paused to wonder:just how latein the boot...
Kernel debugging 选项的开启也不可或缺,它会在内核中添加大量的调试信息,使得我们在调试时能够获取更详细的内核运行状态信息。比如,开启该选项后,内核在出现 Oops 错误时,会输出更多关于错误发生时的上下文信息,包括寄存器的值、函数调用栈等,这些信息对于准确分析错误原因至关重要。 此外,还有一些其他的调试相关选项也...
First of all, i need neither build Linux kernel nor run it. I just want to be able to browse its source code. My CLion version is CLion 2023.1.3, Build #CL-231.9011.31, built on May 15, 2023. My OS is Fedora 37. When I open a random file in a newly created project...
使用CodeViser调试RK3399处理器以及Linux kernel指导(第一部分) 麦克泰技术 公众号《麦克泰技术》 SEGGER、功能安全预认证RTOS 来自专栏 · 技术小课堂 2 人赞同了该文章 CodeViser是J&D Tech公司开发的一款JTAG仿真器,支持ARM和RISC-V等CPU 核。配套的CVD调试软件提供高效稳定的调试环境,支持源码级调试和强有力的...
Oracle Linux Now Includes the Latest Linux Kernel with UEK 8 Learn moreabout Oracle Linux Now Includes the Latest Linux Kernel with UEK 8 Introducing UEK-next Developers: Now you can easily preview cutting-edge, upstream kernel innovations. With UEK-next, you can try out the latest developments...
This article discusses using cross compile tools under x86 Ubuntu Linux to build the Linux kernel for the VisionFive 2 RISC-V SBC. Table of Contents Introduction Background Build and Test Environment Source Tree Clone and Pulls Two Alternative Builds Using the Code Two Methods, Two Different...