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  2. Linux kernel - Wikipedia

    en.wikipedia.org/wiki/Linux_kernel

    The Linux kernel is a free and open source, [12]: 4 Unix-like kernel that is used in many computer systems worldwide. The kernel was created by Linus Torvalds in 1991 and was soon adopted as the kernel for the GNU operating system (OS) which was created to be a free replacement for Unix.

  3. perf (Linux) - Wikipedia

    en.wikipedia.org/wiki/Perf_(Linux)

    The interface between the perf utility and the kernel consists of only one syscall and is done via a file descriptor and a mapped memory region. [6] Unlike LTTng or older versions of oprofile, no service daemons are needed, as most functionality is integrated into the kernel. The perf utility dumps raw data from the mapped buffer to disk when ...

  4. Kernel page-table isolation - Wikipedia

    en.wikipedia.org/wiki/Kernel_page-table_isolation

    One set of page tables includes both kernel-space and user-space addresses same as before, but it is only used when the system is running in kernel mode. The second set of page tables for use in user mode contains a copy of user-space and a minimal set of kernel-space mappings that provides the information needed to enter or exit system calls ...

  5. udev - Wikipedia

    en.wikipedia.org/wiki/Udev

    udev (userspace /dev) is a device manager for the Linux kernel.As the successor of devfsd and hotplug, udev primarily manages device nodes in the /dev directory. At the same time, udev also handles all user space events raised when hardware devices are added into the system or removed from it, including firmware loading as required by certain devices.

  6. Booting process of Linux - Wikipedia

    en.wikipedia.org/wiki/Booting_process_of_Linux

    The startup function startup_32() for the kernel (also called the swapper or process 0) establishes memory management (paging tables and memory paging), detects the type of CPU and any additional functionality such as floating point capabilities, and then switches to non-architecture specific Linux kernel functionality via a call to start ...

  7. Dynamic Kernel Module Support - Wikipedia

    en.wikipedia.org/wiki/Dynamic_Kernel_Module_Support

    Dynamic Kernel Module Support (DKMS) is a program/framework that enables generating Linux kernel modules whose sources generally reside outside the kernel source tree. The concept is to have DKMS modules automatically rebuilt when a new kernel is installed.

  8. dpkg - Wikipedia

    en.wikipedia.org/wiki/Dpkg

    dpkg is used to install, remove, and provide information about .deb packages. dpkg (Debian Package) itself is a low-level tool. APT (Advanced Package Tool), a higher-level tool, is more commonly used than dpkg as it can fetch packages from remote locations and deal with complex package relations, such as dependency resolution.

  9. Debian - Wikipedia

    en.wikipedia.org/wiki/Debian

    Debian (/ ˈ d ɛ b i ə n /), [7] [8] also known as Debian GNU/Linux, is a free and open source [b] Linux distribution, developed by the Debian Project, which was established by Ian Murdock in August 1993. Debian is one of the oldest operating systems based on the Linux kernel, and is the basis for many other Linux distributions.