The Linux Kernel documentation¶
This is the top level of the kernel’s documentation tree. Kernel documentation, like the kernel itself, is very much a work in progress; that is especially true as we work to integrate our many scattered documents into a coherent whole. Please note that improvements to the documentation are welcome; join the linux-doc list at vger.kernel.org if you want to help out.
User-oriented documentation¶
The following manuals are written for users of the kernel — those who are trying to get it to work optimally on a given system.
- The Linux kernel user’s and administrator’s guide
- Linux kernel release 4.x <http://kernel.org/>
- The kernel’s command-line parameters
- Linux allocated devices (4.x+ version)
- Reporting bugs
- Security bugs
- Bug hunting
- Bisecting a bug
- Tainted kernels
- Ramoops oops/panic logger
- Dynamic debug
- Explaining the dreaded “No init found.” boot hang message
- Rules on how to access information in sysfs
- Using the initial RAM disk (initrd)
- Linux Serial Console
- Linux Braille Console
- Parport
- RAID arrays
- Kernel module signing facility
- Linux Magic System Request Key Hacks
- Unicode support
- Software cursor for VGA
- Kernel Support for miscellaneous (your favourite) Binary Formats v1.1
- Mono(tm) Binary Kernel Support for Linux
- Java(tm) Binary Kernel Support for Linux v1.03
- Reliability, Availability and Serviceability
- Power Management
- Thunderbolt
- Linux Security Module Usage
Application-developer documentation¶
The user-space API manual gathers together documents describing aspects of the kernel interface as seen by application developers.
Introduction to kernel development¶
These manuals contain overall information about how to develop the kernel. The kernel community is quite large, with thousands of developers contributing over the course of a year. As with any large community, knowing how things are done will make the process of getting your changes merged much easier.
- Working with the kernel development community
- HOWTO do Linux kernel development
- Code of Conflict
- A guide to the Kernel Development Process
- Submitting patches: the essential guide to getting your code into the kernel
- Linux kernel coding style
- Email clients info for Linux
- Linux Kernel Enforcement Statement
- Minimal requirements to compile the Kernel
- Submitting Drivers For The Linux Kernel
- The Linux Kernel Driver Interface
- Linux kernel management style
- Everything you ever wanted to know about Linux -stable releases
- Linux Kernel patch submission checklist
- Index of Documentation for People Interested in Writing and/or Understanding the Linux Kernel
- Applying Patches To The Linux Kernel
- Adding a New System Call
- Linux magic numbers
- Why the “volatile” type class should not be used
- Development tools for the kernel
- Coccinelle
- Sparse
- kcov: code coverage for fuzzing
- Using gcov with the Linux kernel
- The Kernel Address Sanitizer (KASAN)
- The Undefined Behavior Sanitizer - UBSAN
- Kernel Memory Leak Detector
- Getting started with kmemcheck
- Debugging kernel and modules via gdb
- Using kgdb, kdb and the kernel debugger internals
- Linux Kernel Selftests
- How to write kernel documentation
- Kernel Hacking Guides
Kernel API documentation¶
These books get into the details of how specific kernel subsystems work from the point of view of a kernel developer. Much of the information here is taken directly from the kernel source, with supplemental material added as needed (or at least as we managed to add it — probably not all that is needed).
- The Linux driver implementer’s API guide
- Driver Basics
- Device drivers infrastructure
- Device Power Management
- Bus-Independent Device Accesses
- Buffer Sharing and Synchronization
- Device links
- Message-based devices
- Sound Devices
- Frame Buffer Library
- Voltage and current regulator API
- Industrial I/O
- Input Subsystem
- Linux USB API
- PCI Support Library
- PCI Hotplug Support Library
- Serial Peripheral Interface (SPI)
- I2C and SMBus Subsystem
- High Speed Synchronous Serial Interface (HSI)
- Error Detection And Correction (EDAC) Devices
- SCSI Interfaces Guide
- libATA Developer’s Guide
- MTD NAND Driver Programming Interface
- Parallel Port Devices
- 16x50 UART Driver
- Pulse-Width Modulation (PWM)
- W1: Dallas’ 1-wire bus
- RapidIO Subsystem Guide
- Writing s390 channel device drivers
- VME Device Drivers
- Linux 802.11 Driver Developer’s Guide
- The Userspace I/O HOWTO
- Linux Firmware API
- PINCTRL (PIN CONTROL) subsystem
- General Purpose Input/Output (GPIO)
- Miscellaneous Devices
- Core API Documentation
- Linux Media Subsystem Documentation
- Linux Networking Documentation
- The Linux Input Documentation
- Linux GPU Driver Developer’s Guide
- Introduction
- DRM Internals
- DRM Memory Management
- Kernel Mode Setting (KMS)
- Mode Setting Helper Functions
- Userland interfaces
- drm/i915 Intel GFX Driver
- drm/meson AmLogic Meson Video Processing Unit
- drm/pl111 ARM PrimeCell PL111 CLCD Driver
- drm/tegra NVIDIA Tegra GPU and display driver
- drm/tinydrm Driver library
- drm/vc4 Broadcom VC4 Graphics Driver
- VGA Switcheroo
- VGA Arbiter
- drm/bridge/dw-hdmi Synopsys DesignWare HDMI Controller
- TODO list
- Security Documentation
- Linux Sound Subsystem Documentation
- Linux Kernel Crypto API
- Linux Filesystems API
Architecture-specific documentation¶
These books provide programming details about architecture-specific implementation.