startup_32() and start_kernel(). Then it will turn to user mode (theswapperprocess, pid = 0) and create theinitprocess (pid = 1), which is the ancestor of all other processes running on Linux. The init process will start variousdaemonsaccording...
The chapter then discusses Linux kernel modules, cross compiles them, and inserts them into the Linux kernel. The chapter then discusses Linux device trees that inform the Linux kernel what hardware it is running on and how to create a device tree for a DE10-Nano project. The chapter then...
目前下面的这句话没有理解,等读到后续章节再回过头看吧 To provide synchronization, the kernel can usually disable interrupts either all interrupts or just one specific interrupt number. 在很多操作系统中,包括Linux,中断处理器并不在进程上下文中运行。相反,他们运行在一个特殊的中断上下文环境中,这个context并...
KCOV的使用在内核文档也有,主要是通过虚拟文件系统/sys/kernel/debug/kcov交互。 kcov_fd = open("/sys/kernel/debug/kcov", O_RDWR); ioctl(kcov_fd, KCOV_ENABLE, KCOV_TRACE_PC);/* profiled code */ioctl(kcov_fd, KCOV_DISABLE,0); close(kcov_fd) 在编译内核时需要开启相关配置CONFIG_KCOV。想要...
Linux: 1991 Linus Torvalds Intel 386 (i386). Open Source: GPL. CS591 (Spring 2001) Linux Features UNIX-like operating system. Features: Preemptive multitasking. Virtual memory (protected memory, paging). Shared libraries. Demand loading, dynamic kernel modules. ...
If you've considered giving Linux a closer look but are put off by the slashes, dots, roots, mounts, and terminal weirdness, this introduction to the Li...
Function:whenthecomputerappliances,bootthekernel,loadthekernelcodeintomemory,andcompletethesysteminitialization. Boot | |-bootsect.sdiskbootblock,thecompilerwillresideinthefirstsectorofthedisk. | |hardwareconfigurationparameters--setup.sreadthemachine,andthekernelmodesystemmobilememorytotheappropriatelocation ...
There are few other interesting tools which internally use eBPF. SystemTap release 3.2 includes BPF backend which can use eBPF to run stap scripts rather than using kernel modules as traditional SystemTap. To use this backend install systemtap using yum: ...
Chapter 8. Kernel Synchronization Introduction In a shared memory application, care must be taken to ensure that shared resources are protected from concurrent access. The kernel is no exception. Shared … - Selection from Linux Kernel Development, Seco
Instead, I will refer directly to the object of discussion. Rather than talking about the “Linux kernel,” I will refer to the “kernel.” Rather than talking about the “Linux system,” I will refer to the “system.” Rather than talking about a “Linux distribution,” I will refer ...