Merge remote-tracking branches 'spi/topic/rockchip', 'spi/topic/rspi',...

S: Valladolid 47009

S: Spain

N: Peter Oruba

D: AMD Microcode loader driver

S: Germany

N: Jens Osterkamp

E: jens@de.ibm.com

D: Maintainer of Spidernet network driver for Cell

D: Ralink rt2x00 WLAN driver

D: Minix V2 file-system

D: Misc fixes

S: Geessinkweg 177

S: 7544 TX Enschede

S: The Netherlands

N: Lars Wirzenius

	- this file.

ABI/

	- info on kernel <-> userspace ABI and relative interface stability.

BUG-HUNTING

	- brute force method of doing binary search of patches to find bug.

Changes

	- list of changes that break older software packages.

CodingStyle

	- how the maintainers expect the C code in the kernel to look.

	- nothing here, just a pointer to process/coding-style.rst.

DMA-API.txt

	- DMA API, pci_ API & extensions for non-consistent memory machines.

DMA-API-HOWTO.txt

	- directory with DocBook templates etc. for kernel documentation.

EDID/

	- directory with info on customizing EDID for broken gfx/displays.

HOWTO

	- the process and procedures of how to do Linux kernel development.

IPMI.txt

	- info on Linux Intelligent Platform Management Interface (IPMI) Driver.

IRQ-affinity.txt

Intel-IOMMU.txt

	- basic info on the Intel IOMMU virtualization support.

Makefile

	- This file does nothing. Removing it breaks make htmldocs and

	  make distclean.

ManagementStyle

	- how to (attempt to) manage kernel hackers.

	- It's not of interest for those who aren't touching the build system.

Makefile.sphinx

	- It's not of interest for those who aren't touching the build system.

PCI/

	- info related to PCI drivers.

RCU/

	- directory with info on RCU (read-copy update).

SAK.txt

	- info on Secure Attention Keys.

SM501.txt

	- Silicon Motion SM501 multimedia companion chip

SecurityBugs

	- procedure for reporting security bugs found in the kernel.

SubmitChecklist

	- Linux kernel patch submission checklist.

SubmittingDrivers

	- procedure to get a new driver source included into the kernel tree.

SubmittingPatches

	- procedure to get a source patch included into the kernel tree.

VGA-softcursor.txt

	- how to change your VGA cursor from a blinking underscore.

	- nothing here, just a pointer to process/coding-style.rst.

accounting/

	- documentation on accounting and taskstats.

acpi/

	- info on ACPI-specific hooks in the kernel.

admin-guide/

	- info related to Linux users and system admins.

aoe/

	- description of AoE (ATA over Ethernet) along with config examples.

applying-patches.txt

	- description of various trees and how to apply their patches.

arm/

	- directory with info about Linux on the ARM architecture.

arm64/

	- directory with info about Linux on the 64 bit ARM architecture.

assoc_array.txt

	- generic associative array intro.

atomic_ops.txt

	- semantics and behavior of atomic and bitmask operations.

auxdisplay/

	- misc. LCD driver documentation (cfag12864b, ks0108).

backlight/

	- directory with info on controlling backlights in flat panel displays

bad_memory.txt

	- how to use kernel parameters to exclude bad RAM regions.

basic_profiling.txt

	- basic instructions for those who wants to profile Linux kernel.

bcache.txt

	- Block-layer cache on fast SSDs to improve slow (raid) I/O performance.

binfmt_misc.txt

	- info on the kernel support for extra binary formats.

blackfin/

	- directory with documentation for the Blackfin arch.

block/

	- info on the Block I/O (BIO) layer.

blockdev/

	- info on block devices & drivers

braille-console.txt

	- info on how to use serial devices for Braille support.

bt8xxgpio.txt

	- info on how to modify a bt8xx video card for GPIO usage.

btmrvl.txt

	- describes the cache/TLB flushing interfaces Linux uses.

cdrom/

	- directory with information on the CD-ROM drivers that Linux has.

cgroups/

	- cgroups features, including cpusets and memory controller.

cgroup-v1/

	- cgroups v1 features, including cpusets and memory controller.

cgroup-v2.txt

	- cgroups v2 features, including cpusets and memory controller.

circular-buffers.txt

	- how to make use of the existing circular buffer infrastructure

clk.txt

	- info on the common clock framework

coccinelle.txt

	- info on how to get and use the Coccinelle code checking tool.

cma/

	- Continuous Memory Area (CMA) debugfs interface.

conf.py

	- It's not of interest for those who aren't touching the build system.

connector/

	- docs on the netlink based userspace<->kernel space communication mod.

console/

	- documentation on Linux console drivers.

core-api/

	- documentation on kernel core components.

cpu-freq/

	- info on CPU frequency and voltage scaling.

cpu-hotplug.txt

	- how to use firewire like a hardware debugger memory reader.

dell_rbu.txt

	- document demonstrating the use of the Dell Remote BIOS Update driver.

development-process/

	- how to work with the mainline kernel development process.

dev-tools/

	- directory with info on development tools for the kernel.

device-mapper/

	- directory with info on Device Mapper.

devices.txt

	- plain ASCII listing of all the nodes in /dev/ with major minor #'s.

dmaengine/

	- the DMA engine and controller API guides.

devicetree/

	- directory with info on device tree files used by OF/PowerPC/ARM

digsig.txt

	-info on the Digital Signature Verification API

dma-buf-sharing.txt

	- the DMA Buffer Sharing API Guide

docutils.conf

	- nothing here. Just a configuration file for docutils.

dontdiff

	- file containing a list of files that should never be diff'ed.

driver-api/

	- the Linux driver implementer's API guide.

driver-model/

	- directory with info about Linux driver model.

dvb/

	- info on Linux Digital Video Broadcast (DVB) subsystem.

dynamic-debug-howto.txt

	- how to use the dynamic debug (dyndbg) feature.

early-userspace/

	- info about initramfs, klibc, and userspace early during boot.

edac.txt

	- information on EDAC - Error Detection And Correction

efi-stub.txt

	- How to use the EFI boot stub to bypass GRUB or elilo on EFI systems.

eisa.txt

	- info on EISA bus support.

email-clients.txt

	- info on how to use e-mail to send un-mangled (git) patches.

extcon/

	- directory with porting guide for Android kernel switch driver.

isa.txt

	- info on EISA bus support.

fault-injection/

	- dir with docs about the fault injection capabilities infrastructure.

fb/

	- directory with info on the frame buffer graphics abstraction layer.

features/

	- status of feature implementation on different architectures.

filesystems/

	- info on the vfs and the various filesystems that Linux supports.

firmware_class/

	- how to make use of flexible sized arrays in linux

fmc/

	- information about the FMC bus abstraction

fpga/

	- FPGA Manager Core.

frv/

	- Fujitsu FR-V Linux documentation.

futex-requeue-pi.txt

	- info on requeueing of tasks from a non-PI futex to a PI futex

gcov.txt

	- use of GCC's coverage testing tool "gcov" with the Linux kernel

gcc-plugins.txt

	- GCC plugin infrastructure.

gpio/

	- gpio related documentation

gpu/

	- directory with information on GPU driver developer's guide.

hid/

	- directory with information on human interface devices

highuid.txt

	- notes on the change from 16 bit to 32 bit user/group IDs.

hsi.txt

	- HSI subsystem overview.

hwspinlock.txt

	- hardware spinlock provides hardware assistance for synchronization

timers/

	- directory with docs on various hardware monitoring drivers.

i2c/

	- directory with info about the I2C bus/protocol (2 wire, kHz speed).

i2o/

	- directory with info about the Linux I2O subsystem.

x86/i386/

	- directory with info about Linux on Intel 32 bit architecture.

ia64/

	- directory with info about Linux on Intel 64 bit architecture.

ide/

	- Information regarding the Enhanced IDE drive.

iio/

	- info on industrial IIO configfs support.

index.rst

	- main index for the documentation at ReST format.

infiniband/

	- directory with documents concerning Linux InfiniBand support.

init.txt

	- what to do when the kernel can't find the 1st process to run.

initrd.txt

	- how to use the RAM disk as an initial/temporary root filesystem.

input/

	- info on Linux input device support.

intel_txt.txt

	- info on Linux ISA Plug & Play support.

isdn/

	- directory with info on the Linux ISDN support, and supported cards.

java.txt

	- info on the in-kernel binary support for Java(tm).

ja_JP/

	- directory with Japanese translations of various documents

kbuild/

	- directory with info about the kernel build process.

kernel-doc-nano-HOWTO.txt

	- outdated info about kernel-doc documentation.

kdump/

	- directory with mini HowTo on getting the crash dump code to work.

kernel-docs.txt

	- listing of various WWW + books that document kernel internals.

kernel-documentation.rst

doc-guide/

	- how to write and format reStructuredText kernel documentation

kernel-parameters.txt

	- summary listing of command line / boot prompt args for the kernel.

kernel-per-CPU-kthreads.txt

	- List of all per-CPU kthreads and how they introduce jitter.

kmemcheck.txt

	- info on dynamic checker that detects uses of uninitialized memory.

kmemleak.txt

	- info on how to make use of the kernel memory leak detection system

ko_KR/

	- directory with Korean translations of various documents

kobject.txt

	- info of the kobject infrastructure of the Linux kernel.

kprobes.txt

	- a brief description of LDM (Windows Dynamic Disks).

leds/

	- directory with info about LED handling under Linux.

local_ops.txt

	- semantics and behavior of local atomic operations.

livepatch/

	- info on kernel live patching.

locking/

	- directory with info about kernel locking primitives

lockup-watchdogs.txt

	- kernel LZO decompressor input formats

m68k/

	- directory with info about Linux on Motorola 68k architecture.

magic-number.txt

	- list of magic numbers used to mark/protect kernel data structures.

mailbox.txt

	- How to write drivers for the common mailbox framework (IPC).

md.txt

	- info on boot arguments for the multiple devices driver.

media-framework.txt

	- info on media framework, its data structures, functions and usage.

md-cluster.txt

	- info on shared-device RAID MD cluster.

media/

	- info on media drivers: uAPI, kAPI and driver documentation.

memory-barriers.txt

	- info on Linux kernel memory barriers.

memory-devices/

	- directory with info on parts like the Texas Instruments EMIF driver

memory-hotplug.txt

	- Hotpluggable memory support, how to use and current status.

men-chameleon-bus.txt

	- info on MEN chameleon bus.

metag/

	- directory with info about Linux on Meta architecture.

mic/

	- Intel Many Integrated Core (MIC) architecture device driver.

mips/

	- directory with info about Linux on MIPS architecture.

misc-devices/

	- directory with info about the MMC subsystem

mn10300/

	- directory with info about the mn10300 architecture port

module-signing.txt

	- Kernel module signing for increased security when loading modules.

mtd/

	- directory with info about memory technology devices (flash)

mono.txt

	- how to execute Mono-based .NET binaries with the help of BINFMT_MISC.

namespaces/

	- directory with various information about namespaces

netlabel/

	- directory with info on various aspects of networking with Linux.

nfc/

	- directory relating info about Near Field Communications support.

nios2/

	- Linux on the Nios II architecture.

nommu-mmap.txt

	- documentation about no-mmu memory mapping support.

numastat.txt

	- info on how to read Numa policy hit/miss statistics in sysfs.

oops-tracing.txt

	- how to decode those nasty internal kernel error dump messages.

ntb.txt

	- info on Non-Transparent Bridge (NTB) drivers.

nvdimm/

	- info on non-volatile devices.

nvmem/

	- info on non volatile memory framework.

output/

	- default directory where html/LaTeX/pdf files will be written.

padata.txt

	- An introduction to the "padata" parallel execution API

parisc/

	- directory with info on using Linux on PA-RISC architecture.

parport.txt

	- how to use the parallel-port driver.

parport-lowlevel.txt

	- description and usage of the low level parallel port functions.

pcmcia/

	- info on the Linux PCMCIA driver.

percpu-rw-semaphore.txt

	- RCU based read-write semaphore optimized for locking for reading

perf/

	- info about the APM X-Gene SoC Performance Monitoring Unit (PMU).

phy/

	- ino on Samsung USB 2.0 PHY adaptation layer.

phy.txt

	- Description of the generic PHY framework.

pi-futex.txt

	- documentation on lightweight priority inheritance futexes.

pinctrl.txt

	- info on pinctrl subsystem and the PINMUX/PINCONF and drivers

platform/

	- List of supported hardware by compal and Dell laptop.

pnp.txt

	- Linux Plug and Play documentation.

power/

	- info on locking under a preemptive kernel.

printk-formats.txt

	- how to get printk format specifiers right

process/

	- how to work with the mainline kernel development process.

pps/

	- directory with information on the pulse-per-second support

pti/

	- directory with info on Intel MID PTI.

ptp/

	- directory with info on support for IEEE 1588 PTP clocks in Linux.

pwm.txt

	- info on the pulse width modulation driver subsystem

ramoops.txt

	- documentation of the ramoops oops/panic logging module.

rapidio/

	- directory with info on RapidIO packet-based fabric interconnect

rbtree.txt

	- directory that contains security-related info

serial/

	- directory with info on the low level serial API.

serial-console.txt

	- how to set up Linux with a serial line console as the default.

sgi-ioc4.txt

	- description of the SGI IOC4 PCI (multi function) device.

sh/

	-info on the smsc Keyboard Scan Expansion/GPIO Expansion device.

sound/

	- directory with info on sound card support.

sparse.txt

	- info on how to obtain and use the sparse tool for typechecking.

spi/

	- overview of Linux kernel Serial Peripheral Interface (SPI) support.

stable_api_nonsense.txt

	- info on why the kernel does not have a stable in-kernel api or abi.

stable_kernel_rules.txt

	- rules and procedures for the -stable kernel releases.

sphinx/

	- no documentation here, just files required by Sphinx toolchain.

sphinx-static/

	- no documentation here, just files required by Sphinx toolchain.

static-keys.txt

	- info on how static keys allow debug code in hotpaths via patching

svga.txt

	- short guide on selecting video modes at boot via VGA BIOS.

sysfs-rules.txt

	- How not to use sysfs.

sync_file.txt

	- Sync file API guide.

sysctl/

	- directory with info on the /proc/sys/* files.

sysrq.txt

	- info on the magic SysRq key.

target/

	- directory with info on generating TCM v4 fabric .ko modules

this_cpu_ops.txt

	- directory with information on managing thermal issues (CPU/temp)

trace/

	- directory with info on tracing technologies within linux

translations/

	- translations of this document from English to another language

unaligned-memory-access.txt

	- info on how to avoid arch breaking unaligned memory access in code.

unicode.txt

	- info on the Unicode character/font mapping used in Linux.

unshare.txt

	- description of the Linux unshare system call.

usb/

	- directory with info regarding the Universal Serial Bus.

vDSO/

	- directory with info regarding virtual dynamic shared objects

vfio.txt

	- info on Virtual Function I/O used in guest/hypervisor instances.

vgaarbiter.txt

	- info on enable/disable the legacy decoding on different VGA devices

video-output.txt

	- sysfs class driver interface to enable/disable a video output device.

video4linux/

	- directory with info regarding video/TV/radio cards and linux.

virtual/

	- directory with information on the various linux virtualizations.

vm/

	- directory with info on the Linux vm code.

vme_api.txt

	- file relating info on the VME bus API in linux

volatile-considered-harmful.txt

	- Why the "volatile" type class should not be used

w1/

	- directory with documents regarding the 1-wire (w1) subsystem.

watchdog/

	- how to auto-reboot Linux if it has "fallen and can't get up". ;-)

wimax/

	- directory with info about Intel Wireless Wimax Connections

workqueue.txt

core-api/workqueue.rst

	- information on the Concurrency Managed Workqueue implementation

x86/x86_64/

	- directory with info on Linux support for AMD x86-64 (Hammer) machines.

	- directory with documents relating to arch/xtensa port/implementation

xz.txt

	- how to make use of the XZ data compression within linux kernel

zh_CN/

	- directory with Chinese translations of various documents

zorro.txt

	- info on writing drivers for Zorro bus devices found on Amigas.

- Kernel-internal symbols.  Do not rely on the presence, absence, location, or

  type of any kernel symbol, either in System.map files or the kernel binary

  itself.  See Documentation/stable_api_nonsense.txt.

  itself.  See Documentation/process/stable-api-nonsense.rst.

		Any device associated with a device-tree node will have

		an of_path symlink pointing to the corresponding device

		node in /sys/firmware/devicetree/

What:		/sys/devices/*/devspec

Date:		October 2016

Contact:	Device Tree mailing list <devicetree@vger.kernel.org>

Description:

		If CONFIG_OF is enabled, then this file is present. When

		read, it returns full name of the device node.

What:		/sys/devices/*/obppath

Date:		October 2016

Contact:	Device Tree mailing list <devicetree@vger.kernel.org>

Description:

		If CONFIG_OF is enabled, then this file is present. When

		read, it returns full name of the device node.

		write_same_max_bytes is 0, write same is not supported

		by the device.

What:		/sys/block/<disk>/queue/write_zeroes_max_bytes

Date:		November 2016

Contact:	Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>

Description:

		Devices that support write zeroes operation in which a

		single request can be issued to zero out the range of

		contiguous blocks on storage without having any payload

		in the request. This can be used to optimize writing zeroes

		to the devices. write_zeroes_max_bytes indicates how many

		bytes can be written in a single write zeroes command. If

		write_zeroes_max_bytes is 0, write zeroes is not supported

		by the device.

What:		/sys/block/<disk>/queue/zoned

Date:		September 2016

Contact:	Damien Le Moal <damien.lemoal@hgst.com>

Description:

		zoned indicates if the device is a zoned block device

		and the zone model of the device if it is indeed zoned.

		The possible values indicated by zoned are "none" for

		regular block devices and "host-aware" or "host-managed"

		for zoned block devices. The characteristics of

		host-aware and host-managed zoned block devices are

		described in the ZBC (Zoned Block Commands) and ZAC

		(Zoned Device ATA Command Set) standards. These standards

		also define the "drive-managed" zone model. However,

		since drive-managed zoned block devices do not support

		zone commands, they will be treated as regular block

		devices and zoned will report "none".

What:		/sys/block/<disk>/queue/chunk_sectors

Date:		September 2016

Contact:	Hannes Reinecke <hare@suse.com>

Description:

		chunk_sectors has different meaning depending on the type

		of the disk. For a RAID device (dm-raid), chunk_sectors

		indicates the size in 512B sectors of the RAID volume

		stripe segment. For a zoned block device, either

		host-aware or host-managed, chunk_sectors indicates the

		size of 512B sectors of the zones of the device, with

		the eventual exception of the last zone of the device

		which may be smaller.