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/Documentation/devicetree/bindings/display/
Dsimple-framebuffer.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/display/simple-framebuffer.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
11 - Hans de Goede <hdegoede@redhat.com>
14 A simple frame-buffer describes a frame-buffer setup by firmware or
20 sub-nodes of the chosen node (*). Simplefb nodes must be named
37 interaction, then the chosen node stdout-path property should point
42 It is advised that devicetree files contain pre-filled, disabled
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/Documentation/input/
Dgameport-programming.rst34 Please also consider enabling the gameport on the card in the ->open()
35 callback if the io is mapped to ISA space - this way it'll occupy the io
37 ->close() callback. You also can select the io address in the ->open()
70 the driver doesn't have to measure them the old way - an ADC is built into
86 return -(mode != GAMEPORT_MODE_COOKED);
97 See analog.c and input.c for handling of fuzz - the fuzz value determines
105 examples 1+2 or 1+3. Gameports can support internal calibration - see below,
107 more than one gameport instance simultaneously, use the ->private member of
144 I/O address for use with raw mode. You have to either set this, or ->read()
188 pre-filled by cooked data by the caller, max[0..3] should be pre-filled with
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/Documentation/media/uapi/dvb/
Dfrontend-stat-properties.rst4 .. Foundation, with no Invariant Sections, no Front-Cover Texts
5 .. and no Back-Cover Texts. A copy of the license is included at
6 .. Documentation/media/uapi/fdl-appendix.rst.
8 .. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections
10 .. _frontend-stat-properties:
34 The number of filled elements are stored at ``dtv_property.stat.len``.
39 - ``svalue`` or ``uvalue``, where ``svalue`` is for signed values of
43 - ``scale`` - Scale for the value. It can be:
45 - ``FE_SCALE_NOT_AVAILABLE`` - The parameter is supported by the
49 - ``FE_SCALE_DECIBEL`` - parameter is a signed value, measured in
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/Documentation/filesystems/
Dorangefs.txt4 OrangeFS is an LGPL userspace scale-out parallel storage system. It is ideal
58 On Fedora, install orangefs and orangefs-server.
60 dnf -y install orangefs orangefs-server
71 pvfs2-client-core.
75 pvfs2-server -f /etc/orangefs/orangefs.conf
79 systemctl start orangefs-server
83 pvfs2-ping -m /pvfsmnt
88 systemctl start orangefs-client
92 mount -t pvfs2 tcp://localhost:3334/orangefs /pvfsmnt
101 You can omit --prefix if you don't care that things are sprinkled around
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Dcoda.txt3 Coda -- this document describes the client kernel-Venus interface.
29 level filesystem code needed for the operation of the Coda file sys-
179 leads to an almost natural environment for implementing a kernel-level
209 pre-processing, the VFS starts invoking exported routines in the FS
271 up processes. The Coda FS driver processes VFS- and pioctl-requests
283 memory for the request. Since the data buffer is re-used to hold the
289 is filled in, flags are set to 0, and it is placed on the _p_e_n_d_i_n_g
351 processing. The VFS routine will now continue. (-- If a VFS request
354 to indicate points of no return have been passed.--)
445 directory in the Coda filesystem within a _c_e_l_l. (-- A _c_e_l_l is a
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Dmount_api.txt36 (3) Validate and pre-process the context.
51 The first is invoked to set up the filesystem-specific parts of a filesystem
92 below). This must be set by the ->init_fs_context() file_system_type
108 superblock thereof). This is filled in by the ->get_tree() op. If this
109 is set, an active reference on root->d_sb must also be held.
151 These will be bitwise-OR'd with s->s_iflags when a superblock is created.
158 FS_CONTEXT_FOR_MOUNT, -- New superblock for explicit mount
159 FS_CONTEXT_FOR_SUBMOUNT -- New automatic submount of extant mount
160 FS_CONTEXT_FOR_RECONFIGURE -- Change an existing mount
200 Called to clean up the filesystem-specific part of the filesystem context
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/Documentation/security/
Dsiphash.rst2 SipHash - a short input PRF
7 SipHash is a cryptographically secure PRF -- a keyed hash function -- that
9 cryptographers Daniel J. Bernstein and Jean-Philippe Aumasson. It is intended
13 SipHash takes a secret key filled with randomly generated numbers and either
49 will constant fold at compile-time and automatically choose one of the
61 get_random_bytes(&table->key, sizeof(table->key));
66 …return &table->hashtable[siphash(input, sizeof(*input), &table->key) & (HASH_SIZE(table->hashtable…
74 SipHash has a very high security margin, with its 128-bit key. So long as the
79 Linux implements the "2-4" variant of SipHash.
81 Struct-passing Pitfalls
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/Documentation/driver-api/
Dxillybus.rst10 - Introduction
11 -- Background
12 -- Xillybus Overview
14 - Usage
15 -- User interface
16 -- Synchronization
17 -- Seekable pipes
19 - Internals
20 -- Source code organization
21 -- Pipe attributes
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/Documentation/vm/
Dfrontswap.rst9 swapped pages are saved in RAM (or a RAM-like device) instead of a swap disk.
11 (Note, frontswap -- and :ref:`cleancache` (merged at 3.0) -- are the "frontends"
13 all other supporting code -- the "backends" -- is implemented as drivers.
21 a synchronous concurrency-safe page-oriented "pseudo-RAM device" conforming
23 in-kernel compressed memory, aka "zcache", or future RAM-like devices);
24 this pseudo-RAM device is not directly accessible or addressable by the
25 kernel and is of unknown and possibly time-varying size. The driver
50 in swap device writes is lost (and also a non-trivial performance advantage)
88 useful for write-balancing for some RAM-like devices). Swap pages (and
89 evicted page-cache pages) are a great use for this kind of slower-than-RAM-
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/Documentation/admin-guide/blockdev/
Dzram.rst20 There are several ways to configure and manage zram device(-s):
23 b) using zramctl utility, provided by util-linux (util-linux@vger.kernel.org).
28 In order to get a better idea about zramctl please consult util-linux
29 documentation, zramctl man-page or `zramctl --help`. Please be informed
30 that zram maintainers do not develop/maintain util-linux or zramctl, should
31 you have any questions please contact util-linux@vger.kernel.org
45 -EBUSY an attempt to modify an attribute that cannot be changed once
47 -ENOMEM zram was not able to allocate enough memory to fulfil your
49 -EINVAL invalid input has been provided.
56 if [ $? -ne 0 ];
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/Documentation/devicetree/bindings/net/
Dsnps,dwmac.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Alexandre Torgue <alexandre.torgue@st.com>
11 - Giuseppe Cavallaro <peppe.cavallaro@st.com>
12 - Jose Abreu <joabreu@synopsys.com>
23 - snps,dwmac
24 - snps,dwmac-3.50a
25 - snps,dwmac-3.610
26 - snps,dwmac-3.70a
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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/block/
Dbiodoc.rst13 - Jens Axboe <jens.axboe@oracle.com>
14 - Suparna Bhattacharya <suparna@in.ibm.com>
19 - Nick Piggin <npiggin@kernel.dk>
34 - Jens Axboe <jens.axboe@oracle.com>
43 - Christoph Hellwig <hch@infradead.org>
44 - Arjan van de Ven <arjanv@redhat.com>
45 - Randy Dunlap <rdunlap@xenotime.net>
46 - Andre Hedrick <andre@linux-ide.org>
49 while it was still work-in-progress:
51 - David S. Miller <davem@redhat.com>
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/Documentation/sound/kernel-api/
Dwriting-an-alsa-driver.rst11 Architecture) <http://www.alsa-project.org/>`__ driver. The document
19 low-level driver implementation details. It only describes the standard
29 -------
61 --------------
65 sub-directories contain different modules and are dependent upon the
74 ``core/seq/oss`` directory (see `below <#core-seq-oss>`__).
79 This directory and its sub-directories are for the ALSA sequencer. This
81 like snd-seq-midi, snd-seq-virmidi, etc. They are compiled only when
90 -----------------
93 to be exported to user-space, or included by several files at different
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/Documentation/gpu/
Ddrm-mm.rst6 frame buffers, textures, vertices and other graphics-related data. Given
13 manager to be developed and tried to be a one-size-fits-them all
20 GEM started as an Intel-sponsored project in reaction to TTM's
22 providing a solution to every graphics memory-related problems, GEM
34 ------------------
39 Drivers wishing to support TTM must pass a filled :c:type:`ttm_bo_driver
49 .. code-block:: c
65 point at your driver-specific init and release routines, which probably
74 ttm_bo_global). Again, driver-specific init and release functions may
87 userspace or kernel API. GEM exposes a set of standard memory-related
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/Documentation/sparc/oradax/
Ddax-hv-api.txt3 Publication date 2017-09-25 08:21
5 Extracted via "pdftotext -f 547 -l 572 -layout sun4v_20170925.pdf"
16 live-migration and other system management activities.
20 …high speed processoring of database-centric operations. The coprocessors may support one or more of
28 …e Completion Area and, unless execution order is specifically restricted through the use of serial-
45 …device node in the guest MD (Section 8.24.17, “Database Analytics Accelerators (DAX) virtual-device
51 36.1.1.1. "ORCL,sun4v-dax" Device Compatibility
54 • No-op/Sync
81 36.1.1.2. "ORCL,sun4v-dax-fc" Device Compatibility
82 … "ORCL,sun4v-dax-fc" is compatible with the "ORCL,sun4v-dax" interface, and includes additional CCB
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/Documentation/virt/kvm/
Dapi.txt1 The Definitive KVM (Kernel-based Virtual Machine) API Documentation
5 ----------------------
10 - System ioctls: These query and set global attributes which affect the
14 - VM ioctls: These query and set attributes that affect an entire virtual
21 - vcpu ioctls: These query and set attributes that control the operation
29 - device ioctls: These query and set attributes that control the operation
36 -------------------
73 -------------
77 facility that allows backward-compatible extensions to the API to be
87 ------------------
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/Documentation/x86/
Dboot.rst1 .. SPDX-License-Identifier: GPL-2.0
12 real-mode DOS as a mainstream operating system.
28 Protocol 2.02 (Kernel 2.4.0-test3-pre3) New command line protocol.
31 safe for systems which use the EBDA from SMM or 32-bit
35 Protocol 2.03 (Kernel 2.4.18-pre1) Explicitly makes the highest possible
54 Protocol 2.09 (Kernel 2.6.26) Added a field of 64-bit physical
68 Protocol 2.13 (Kernel 3.14) Support 32- and 64-bit flags being set in
69 xloadflags to support booting a 64-bit kernel from 32-bit
81 0A0000 +------------------------+
83 09A000 +------------------------+
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/Documentation/sound/
Dalsa-configuration.rst2 Advanced Linux Sound Architecture - Driver Configuration guide
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,
90 Module snd-rawmidi
91 ------------------
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/Documentation/admin-guide/
Dkernel-parameters.txt5 force -- enable ACPI if default was off
6 on -- enable ACPI but allow fallback to DT [arm64]
7 off -- disable ACPI if default was on
8 noirq -- do not use ACPI for IRQ routing
9 strict -- Be less tolerant of platforms that are not
11 rsdt -- prefer RSDT over (default) XSDT
12 copy_dsdt -- copy DSDT to memory
56 Documentation/firmware-guide/acpi/debug.rst for more information about
119 Disable auto-serialization of AML methods
122 auto-serialization feature.
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