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/Documentation/devicetree/bindings/hwmon/
Dibm,occ-hwmon.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/hwmon/ibm,occ-hwmon.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: IBM On-Chip Controller (OCC) accessed from a service processor
10 - Eddie James <eajames@linux.ibm.com>
13 The POWER processor On-Chip Controller (OCC) helps manage power and
21 - ibm,p9-occ-hwmon
22 - ibm,p10-occ-hwmon
24 ibm,no-poll-on-init:
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/Documentation/arch/x86/x86_64/
Dboot-options.rst1 .. SPDX-License-Identifier: GPL-2.0
27 This option will be useful if you have no interest in any
39 Do not opt-in to Local MCE delivery. Use legacy method
43 Disabled by default on AMD Fam10h and older because some BIOS
47 in a reboot. On Intel systems it is enabled by default.
52 Sets the time in us to wait for other CPUs on machine checks. 0
55 Don't overwrite the bios-set CMCI threshold. This boot option
62 Force-enable recoverable machine check code paths
73 Use IO-APIC. Default
76 Don't use the IO-APIC.
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/Documentation/networking/
Dplip.rst1 .. SPDX-License-Identifier: GPL-2.0
14 -----------------
17 This device interface allows a point-to-point connection between two
25 printer port. PLIP is a non-standard, but [can use] uses the standard
26 LapLink null-printer cable [can also work in turbo mode, with a PLIP
39 minutes' work, no need to search for a [supported] netcard. This might
62 -------------------
73 when no data is available, the driver isn't being used.
75 However, on some machines it is hard, if not impossible, to configure an IRQ
77 On these machines, the PLIP driver can be used in IRQ-less mode, where
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Dnetdevices.rst1 .. SPDX-License-Identifier: GPL-2.0
17 If device has registered successfully, it will be freed on last use
33 --------------
41 .. code-block:: c
50 return -ENOMEM;
81 by sysfs but all operations on that device will fail.
83 free_netdev() can be called after unregister_netdev() returns on when
87 ----------------------------
96 .. code-block:: c
100 dev->needs_free_netdev = true;
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Dscaling.rst1 .. SPDX-License-Identifier: GPL-2.0
13 multi-processor systems.
17 - RSS: Receive Side Scaling
18 - RPS: Receive Packet Steering
19 - RFS: Receive Flow Steering
20 - Accelerated Receive Flow Steering
21 - XPS: Transmit Packet Steering
28 (multi-queue). On reception, a NIC can send different packets to different
33 generally known as “Receive-side Scaling” (RSS). The goal of RSS and
35 Multi-queue distribution can also be used for traffic prioritization, but
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Dip-sysctl.rst1 .. SPDX-License-Identifier: GPL-2.0
10 ip_forward - BOOLEAN
11 - 0 - disabled (default)
12 - not 0 - enabled
20 ip_default_ttl - INTEGER
25 ip_no_pmtu_disc - INTEGER
27 fragmentation-required ICMP is received, the PMTU to this
30 to raise min_pmtu to the smallest interface MTU on your system
35 implicitly setting IP_PMTUDISC_DONT on every created socket.
38 accept fragmentation-needed errors if the underlying protocol
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/Documentation/filesystems/nfs/
Drpc-cache.rst21 - mapping from IP address to client name
22 - mapping from client name and filesystem to export options
23 - mapping from UID to list of GIDs, to work around NFS's limitation
25 - mappings between local UID/GID and remote UID/GID for sites that
27 - mapping from network identify to public key for crypto authentication.
31 - general cache lookup with correct locking
32 - supporting 'NEGATIVE' as well as positive entries
33 - allowing an EXPIRED time on cache items, and removing
34 items after they expire, and are no longer in-use.
35 - making requests to user-space to fill in cache entries
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/Documentation/driver-api/nfc/
Dnfc-hci.rst5 - Author: Eric Lapuyade, Samuel Ortiz
6 - Contact: eric.lapuyade@intel.com, samuel.ortiz@intel.com
9 -------
12 enables easy writing of HCI-based NFC drivers. The HCI layer runs as an NFC Core
17 ---
30 - one for executing commands : nfc_hci_msg_tx_work(). Only one command
32 - one for dispatching received events and commands : nfc_hci_msg_rx_work().
35 --------------------------
41 In case the chip supports pre-opened gates and pseudo-static pipes, the driver
45 -------------------
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/Documentation/admin-guide/sysctl/
Dnet.rst9 - Terrehon Bowden <terrehon@pacbell.net>
10 - Bodo Bauer <bb@ricochet.net>
14 - Jorge Nerin <comandante@zaralinux.com>
18 - Shen Feng <shen@cn.fujitsu.com>
22 ------------------------------------------------------------------------------
29 see only some of them, depending on your kernel's configuration.
47 1. /proc/sys/net/core - Network core options
51 --------------
61 two flavors of JITs, the newer eBPF JIT currently supported on:
63 - x86_64
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/Documentation/networking/device_drivers/can/
Dcan327.rst1 .. SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
7 --------
14 -----------
26 -------------
33 order to fake full-duplex operation.
36 enough to implement simple request-response protocols (such as OBD II),
37 and to monitor broadcast messages on a bus (such as in a vehicle).
50 -----------
59 ----------------------------------
62 of 38400 baud/s, 8 data bits, no parity, 1 stopbit.
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/Documentation/filesystems/
Dorangefs.rst1 .. SPDX-License-Identifier: GPL-2.0
7 OrangeFS is an LGPL userspace scale-out parallel storage system. It is ideal
20 * Stores file data and metadata on servers using local file system
44 Running ORANGEFS On a Single Server
48 clients, but a complete filesystem can be run on a single machine for
51 On Fedora, install orangefs and orangefs-server::
53 dnf -y install orangefs orangefs-server
64 pvfs2-client-core.
68 pvfs2-server -f /etc/orangefs/orangefs.conf
72 systemctl start orangefs-server
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/Documentation/process/
Dadding-syscalls.rst9 :ref:`Documentation/process/submitting-patches.rst <submittingpatches>`.
13 ------------------------
18 kernel, there are other possibilities -- choose what fits best for your
21 - If the operations involved can be made to look like a filesystem-like
26 - If the new functionality involves operations where the kernel notifies
29 ``poll``/``select``/``epoll`` to receive that notification.
30 - However, operations that don't map to
31 :manpage:`read(2)`/:manpage:`write(2)`-like operations
35 - If you're just exposing runtime system information, a new node in sysfs
41 - If the operation is specific to a particular file or file descriptor, then
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/Documentation/input/
Dinput-programming.rst14 #include <linux/init.h>
34 return -EBUSY;
40 error = -ENOMEM;
44 button_dev->evbit[0] = BIT_MASK(EV_KEY);
45 button_dev->keybit[BIT_WORD(BTN_0)] = BIT_MASK(BTN_0);
83 parts of the input systems what it is - what events can be generated or
88 set_bit(EV_KEY, button_dev->evbit);
89 set_bit(BTN_0, button_dev->keybit);
112 call to the input system. There is no need to check whether the interrupt
126 dev->open() and dev->close()
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/Documentation/translations/sp_SP/process/
Dadding-syscalls.rst1 .. include:: ../disclaimer-sp.rst
3 :Original: :ref:`Documentation/process/adding-syscalls.rst <addsyscalls>`
13 :ref:`Documentation/process/submitting-patches.rst <submittingpatches>` que
17 -----------------------------------
22 tradicionales, existen otras posibilidades -- elija la que mejor se adecúe
25 - Si se puede hacer que la operación se parezca a un objeto filesystem,
31 - Si la nueva funcionalidad involucra operaciones donde el kernel
34 usar ``poll``/``select``/``epoll`` para recibir esta notificación.
36 - Sin embargo, operaciones que no mapean a operaciones similares a
41 - Si sólo está exponiendo información del runtime, un nuevo nodo en sysfs
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/Documentation/admin-guide/
Dkernel-parameters.txt14 Format: { force | on | off | strict | noirq | rsdt |
16 force -- enable ACPI if default was off
17 on -- enable ACPI but allow fallback to DT [arm64,riscv64]
18 off -- disable ACPI if default was on
19 noirq -- do not use ACPI for IRQ routing
20 strict -- Be less tolerant of platforms that are not
22 rsdt -- prefer RSDT over (default) XSDT
23 copy_dsdt -- copy DSDT to memory
24 nospcr -- disable console in ACPI SPCR table as
25 default _serial_ console on ARM64
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Dcgroup-v2.rst1 .. _cgroup-v2:
10 This is the authoritative documentation on the design, interface and
11 conventions of cgroup v2. It describes all userland-visible aspects
14 v1 is available under :ref:`Documentation/admin-guide/cgroup-v1/index.rst <cgroup-v1>`.
19 1-1. Terminology
20 1-2. What is cgroup?
22 2-1. Mounting
23 2-2. Organizing Processes and Threads
24 2-2-1. Processes
25 2-2-2. Threads
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/Documentation/scsi/
DChangeLog.megaraid_sas1 Release Date : Thu. Jun 19, 2014 17:00:00 PST 2014 -
2 (emaild-id:megaraidlinux@lsi.com)
7 Current Version : 06.803.02.00-rc1
8 Old Version : 06.803.01.00-rc1
14 -------------------------------------------------------------------------------
15 Release Date : Mon. Mar 10, 2014 17:00:00 PST 2014 -
16 (emaild-id:megaraidlinux@lsi.com)
20 Current Version : 06.803.01.00-rc1
21 Old Version : 06.700.06.00-rc1
25 4. Add Dell PowerEdge VRTX SR-IOV VF device support.
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/Documentation/networking/device_drivers/ethernet/stmicro/
Dstmmac.rst1 .. SPDX-License-Identifier: GPL-2.0+
13 - In This Release
14 - Feature List
15 - Kernel Configuration
16 - Command Line Parameters
17 - Driver Information and Notes
18 - Debug Information
19 - Support
33 (and older) and DesignWare(R) Cores Ethernet Quality-of-Service version 4.0
35 DesignWare(R) Cores XGMAC - 10G Ethernet MAC and DesignWare(R) Cores
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/Documentation/driver-api/media/
Dv4l2-subdev.rst1 .. SPDX-License-Identifier: GPL-2.0
3 V4L2 sub-devices
4 ----------------
6 Many drivers need to communicate with sub-devices. These devices can do all
8 encoding or decoding. For webcams common sub-devices are sensors and camera
12 driver with a consistent interface to these sub-devices the
13 :c:type:`v4l2_subdev` struct (v4l2-subdev.h) was created.
15 Each sub-device driver must have a :c:type:`v4l2_subdev` struct. This struct
16 can be stand-alone for simple sub-devices or it might be embedded in a larger
18 low-level device struct (e.g. ``i2c_client``) that contains the device data as
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/Documentation/admin-guide/RAS/
Dmain.rst1 .. SPDX-License-Identifier: GPL-2.0
14 Reliability, Availability and Serviceability (RAS) is a concept used on
34 * Generally measured on Mean Time Between Repair (MTBR)
37 -------------
51 Self-Monitoring, Analysis and Reporting Technology (SMART).
54 to identify if the probability of hardware errors is increasing, and, on such
59 ---------------
61 Most mechanisms used on modern systems use technologies like Hamming
62 Codes that allow error correction when the number of errors on a bit packet
67 Also, sometimes an error occur on a component that it is not used. For
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/Documentation/driver-api/
Dlibata.rst12 transports for ATA and ATAPI devices, and SCSI<->ATA translation for ATA
16 internals, and a couple sample ATA low-level drivers.
22 is defined for every low-level libata
23 hardware driver, and it controls how the low-level driver interfaces
26 FIS-based drivers will hook into the system with ``->qc_prep()`` and
27 ``->qc_issue()`` high-level hooks. Hardware which behaves in a manner
33 ----------------------------------------------------------
35 Post-IDENTIFY device configuration
44 Typically used to apply device-specific fixups prior to issue of SET
45 FEATURES - XFER MODE, and prior to operation.
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/Documentation/sound/kernel-api/
Dwriting-an-alsa-driver.rst11 Architecture) <http://www.alsa-project.org/>`__ driver. The document
12 focuses mainly on PCI soundcards. In the case of other device types, the
19 low-level driver implementation details. It only describes the standard
20 way to write a PCI sound driver on ALSA.
26 -------
56 --------------
60 sub-directories contain different modules and are dependent upon the
74 This directory and its sub-directories are for the ALSA sequencer. This
76 as snd-seq-midi, snd-seq-virmidi, etc. They are compiled only when
85 -----------------
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/Documentation/dev-tools/
Dkgdb.rst15 Kdb is simplistic shell-style interface which you can use on a system
22 kernel built-ins or in kernel modules if the code was built with
35 be debugged runs on the target machine. The development machine runs an
39 connection a developer makes with gdb depends on the availability of
40 kgdb I/O modules compiled as built-ins or loadable kernel modules in the
46 - In order to enable compilation of kdb, you must first enable kgdb.
48 - The kgdb test compile options are described in the kgdb test suite
52 ------------------------------
55 :menuselection:`Kernel hacking --> Kernel debugging` and select
60 will want to turn on ``CONFIG_DEBUG_INFO`` which is called
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/Documentation/sound/
Dalsa-configuration.rst2 Advanced Linux Sound Architecture - Driver Configuration guide
16 If you want to support the WaveTable functionality on cards such as
21 and "Debug" options. To check for memory leaks, turn on "Debug memory"
38 ----------
47 limiting card index for auto-loading (1-8);
49 For auto-loading more than one card, specify this option
50 together with snd-card-X aliases.
63 Module snd-pcm-oss
64 ------------------
86 regarding opening the device. When this option is non-zero,
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/Documentation/virt/kvm/
Dapi.rst1 .. SPDX-License-Identifier: GPL-2.0
4 The Definitive KVM (Kernel-based Virtual Machine) API Documentation
13 - System ioctls: These query and set global attributes which affect the
17 - VM ioctls: These query and set attributes that affect an entire virtual
24 - vcpu ioctls: These query and set attributes that control the operation
32 - device ioctls: These query and set attributes that control the operation
43 can be used to issue system ioctls. A KVM_CREATE_VM ioctl on this
45 ioctls. A KVM_CREATE_VCPU or KVM_CREATE_DEVICE ioctl on a VM fd will
47 the new resource. Finally, ioctls on a vcpu or device fd can be used
55 the API. See "General description" for details on the ioctl usage
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