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/Documentation/devicetree/bindings/sound/
Daudio-graph-port.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/sound/audio-graph-port.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
15 port-base:
17 - $ref: /schemas/graph.yaml#/$defs/port-base
18 - $ref: /schemas/sound/dai-params.yaml#
20 mclk-fs:
21 $ref: simple-card.yaml#/definitions/mclk-fs
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/Documentation/sound/soc/
Dcodec-to-codec.rst2 Creating codec to codec dai link for ALSA dapm
9 --------- ---------
11 CPU -------> codec
13 --------- ---------
18 ---------
20 codec-2
22 ---------
24 dai-2
26 ---------- ---------
27 | | dai-1 | |
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/Documentation/networking/device_drivers/ethernet/davicom/
Ddm9000.rst1 .. SPDX-License-Identifier: GPL-2.0
9 Ben Dooks <ben@simtec.co.uk> <ben-linux@fluff.org>
13 ------------
15 This file describes how to use the DM9000 platform-device based network driver
25 ----------------------------
33 These resources should be specified in that order, as the ordering of the
37 An example from arch/arm/mach-s3c/mach-bast.c is::
64 Note the setting of the IRQ trigger flag in bast_dm9k_resource[2].flags,
65 as this will generate a warning if it is not present. The trigger from
91 -------------
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/Documentation/filesystems/
Ddirectory-locking.rst7 kinds of locks - per-inode (->i_rwsem) and per-filesystem
8 (->s_vfs_rename_mutex).
10 When taking the i_rwsem on multiple non-directory objects, we
11 always acquire the locks in order by increasing address. We'll call
12 that "inode pointer" order in the following.
34 4. link creation. Locking rules:
40 5. rename that is _not_ cross-directory. Locking rules:
45 The source needs to be locked if it's a non-directory, target - if it's
46 a non-directory or about to be removed.
47 * take the locks that need to be taken (exclusive), in inode pointer order
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Dsquashfs.rst1 .. SPDX-License-Identifier: GPL-2.0
7 Squashfs is a compressed read-only filesystem for Linux.
14 Squashfs is intended for general read-only filesystem use, for archival
19 Mailing list: squashfs-devel@lists.sourceforge.net
23 ----------------------
39 Tail-end packing (fragments) yes no
41 Hard link support yes no
44 32-bit uids/gids yes no
53 file type, i.e. regular file, directory, symbolic link, and block/char device
57 -----------------
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Dpath-lookup.rst5 This write-up is based on three articles published at lwn.net:
7 - <https://lwn.net/Articles/649115/> Pathname lookup in Linux
8 - <https://lwn.net/Articles/649729/> RCU-walk: faster pathname lookup in Linux
9 - <https://lwn.net/Articles/650786/> A walk among the symlinks
15 - per-directory parallel name lookup.
16 - ``openat2()`` resolution restriction flags.
27 the early parts of the analysis we will divide off symlinks - leaving
30 will allow us to review "REF-walk" and "RCU-walk" separately. But we
35 --------------------------
37 .. _openat: http://man7.org/linux/man-pages/man2/openat.2.html
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Dconfigfs.rst2 Configfs - Userspace-driven Kernel Object Configuration
16 configfs is a ram-based filesystem that provides the converse of
17 sysfs's functionality. Where sysfs is a filesystem-based view of
18 kernel objects, configfs is a filesystem-based manager of kernel
46 mount -t configfs none /config
74 imperative for user-space to check the return code of close(2) in order to
76 To avoid a malicious user OOMing the kernel, there's a per-binary attribute
80 item cannot be destroyed if any other item has a link to it (via
109 read-only or read-write::
202 allocated dynamically will need to provide the ct_item_ops->release()
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/Documentation/hid/
Dintel-ish-hid.rst6 processing to a dedicated low power co-processor. This allows the core
11 Sensor usage tables. These may be found in tablets, 2-in-1 convertible laptops
27 ----------------- ----------------------
28 | USB HID | --> | ISH HID |
29 ----------------- ----------------------
30 ----------------- ----------------------
31 | USB protocol | --> | ISH Transport |
32 ----------------- ----------------------
33 ----------------- ----------------------
34 | EHCI/XHCI | --> | ISH IPC |
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/Documentation/rust/
Dcoding-guidelines.rst1 .. SPDX-License-Identifier: GPL-2.0
10 ------------------
37 Like ``clang-format`` for the rest of the kernel, ``rustfmt`` works on
43 --------
51 .. code-block:: rust
60 .. code-block:: rust
73 .. code-block:: rust
84 pub fn f(x: i32) -> Foo {
90 correct/sound, i.e. why it cannot trigger undefined behavior in any case, e.g.:
92 .. code-block:: rust
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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/devicetree/bindings/thermal/
Dthermal-zones.yaml1 # SPDX-License-Identifier: (GPL-2.0)
4 ---
5 $id: http://devicetree.org/schemas/thermal/thermal-zones.yaml#
6 $schema: http://devicetree.org/meta-schemas/base.yaml#
11 - Daniel Lezcano <daniel.lezcano@linaro.org>
20 - thermal-sensor: device that measures temperature, has SoC-specific bindings
21 - cooling-device: device used to dissipate heat either passively or actively
22 - thermal-zones: a container of the following node types used to describe all
25 This binding describes the thermal-zones.
27 The polling-delay properties of a thermal-zone are bound to the maximum dT/dt
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/Documentation/trace/coresight/
Dcoresight.rst2 Coresight - HW Assisted Tracing on ARM
9 ------------
19 Components are generally categorised as source, link and sinks and are
38 0 CPU 0<-->: C : 0 CPU 0<-->: C : : C : @ STM @ || System ||
39 |->0000000 : T : |->0000000 : T : : T :<--->@@@@@ || Memory ||
40 | #######<-->: I : | #######<-->: I : : I : @@@<-| ||||||||||||
43 | |->### | ! | |->### | ! | ! . | || DAP ||
49 *****************************************************************<-|
55 ******************** Cross Trigger Matrix (CTM) *******************
63 | * ===== F =====<---------|
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/Documentation/networking/device_drivers/ethernet/intel/
Dice.rst1 .. SPDX-License-Identifier: GPL-2.0+
8 Copyright(c) 2018-2021 Intel Corporation.
13 - Overview
14 - Identifying Your Adapter
15 - Important Notes
16 - Additional Features & Configurations
17 - Performance Optimization
28 This driver supports XDP (Express Data Path) and AF_XDP zero-copy. Note that
43 -------------------------------------------
54 1) Make sure that your system's physical memory is in a high-performance
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/Documentation/networking/
Dsnmp_counter.rst17 .. _RFC1213 ipInReceives: https://tools.ietf.org/html/rfc1213#page-26
30 .. _RFC1213 ipInDelivers: https://tools.ietf.org/html/rfc1213#page-28
41 .. _RFC1213 ipOutRequests: https://tools.ietf.org/html/rfc1213#page-28
60 .. _Explicit Congestion Notification: https://tools.ietf.org/html/rfc3168#page-6
73 .. _RFC1213 ipInHdrErrors: https://tools.ietf.org/html/rfc1213#page-27
81 .. _RFC1213 ipInAddrErrors: https://tools.ietf.org/html/rfc1213#page-27
98 .. _RFC1213 ipInUnknownProtos: https://tools.ietf.org/html/rfc1213#page-27
111 .. _RFC1213 ipInDiscards: https://tools.ietf.org/html/rfc1213#page-28
118 .. _RFC1213 ipOutDiscards: https://tools.ietf.org/html/rfc1213#page-28
125 .. _RFC1213 ipOutNoRoutes: https://tools.ietf.org/html/rfc1213#page-29
[all …]
Dswitchdev.rst1 .. SPDX-License-Identifier: GPL-2.0
11 Copyright |copy| 2014-2015 Scott Feldman <sfeldma@gmail.com>
14 The Ethernet switch device driver model (switchdev) is an in-kernel driver
19 an example setup using a data-center-class switch ASIC chip. Other setups
20 with SR-IOV or soft switches, such as OVS, are possible.
25 User-space tools
28 +-------------------------------------------------------------------+
31 +--------------+-------------------------------+
35 +----------------------------------------------+
41 +--+----+----+----+----+----+---+ +-----+-----+
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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
38 accept fragmentation-needed errors if the underlying protocol
48 Possible values: 0-3
52 min_pmtu - INTEGER
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/Documentation/kbuild/
Dmakefiles.rst29 architecture-specific information to the top Makefile.
34 any built-in or modular targets.
51 working on. In order to do this effectively, they need some overall
80 ----------------
90 obj-y += foo.o
95 If foo.o shall be built as a module, the variable obj-m is used.
100 obj-$(CONFIG_FOO) += foo.o
102 $(CONFIG_FOO) evaluates to either y (for built-in) or m (for module).
106 Built-in object goals - obj-y
107 -----------------------------
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/Documentation/admin-guide/
Dinitrd.rst15 where the kernel comes up with a minimum set of compiled-in drivers, and
23 ---------
51 Boot command-line options
52 -------------------------
70 Note: /dev/initrd is read-only and it can only be used once. As soon
80 ----------------------
88 find . | cpio --quiet -H newc -o | gzip -9 -n > /boot/imagefile.img
94 gzip -cd /boot/imagefile.img | cpio -imd --quiet
97 ------------
127 - a floppy disk (works everywhere but it's painfully slow)
[all …]
Dthunderbolt.rst1 .. SPDX-License-Identifier: GPL-2.0
25 -----------------------------------
27 should be a userspace tool that handles all the low-level details, keeps
31 found in ``Documentation/ABI/testing/sysfs-bus-thunderbolt``.
35 ``/etc/udev/rules.d/99-local.rules``::
102 -----------------------------------------------------------------
105 /sys/bus/thunderbolt/devices/0-1/authorized - 0
106 /sys/bus/thunderbolt/devices/0-1/device - 0x8004
107 /sys/bus/thunderbolt/devices/0-1/device_name - Thunderbolt to FireWire Adapter
108 /sys/bus/thunderbolt/devices/0-1/vendor - 0x1
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/Documentation/driver-api/soundwire/
Dstream.rst15 which is typically driven by a DMA(s) channel through the data link. An
24 -------------------------
26 -------------------------
31 +---------------+ Clock Signal +---------------+
32 | Master +----------------------------------+ Slave |
36 | L + R +----------------------------------+ L + R |
38 +---------------+ +-----------------------> +---------------+
45 +---------------+ Clock Signal +---------------+
46 | Master +----------------------------------+ Slave |
50 | L + R +----------------------------------+ L + R |
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/Documentation/driver-api/media/drivers/
Dcx2341x-devel.rst1 .. SPDX-License-Identifier: GPL-2.0
7 -----------------------
12 .. note:: the memory long words are little-endian ('intel format').
21 .. code-block:: none
23 ivtvctl -O min=0x02000000,max=0x020000ff
26 register space :-).
35 .. code-block:: none
37 0x00000000-0x00ffffff Encoder memory space
38 0x00000000-0x0003ffff Encode.rom
39 ???-??? MPEG buffer(s)
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/Documentation/driver-api/rapidio/
Drapidio.rst5 The RapidIO standard is a packet-based fabric interconnect standard designed for
8 is publicly available for download from the RTA web-site [1].
17 into the kernel similarly to other buses by defining RapidIO-specific device and
21 architecture-specific interfaces that provide support for common RapidIO
33 ---------------
50 ----------
54 structure. Devices form one global device list and per-network device lists
58 ----------
68 specific switch drivers that are designed to provide hardware-specific
72 -----------
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/Documentation/filesystems/xfs/
Dxfs-online-fsck-design.rst1 .. SPDX-License-Identifier: GPL-2.0
8 Heading 3 uses "----"
25 - To help kernel distributors understand exactly what the XFS online fsck
28 - To help people reading the code to familiarize themselves with the relevant
31 - To help developers maintaining the system by capturing the reasons
59 - Provide a hierarchy of names through which application programs can associate
62 - Virtualize physical storage media across those names, and
64 - Retrieve the named data blobs at any time.
66 - Examine resource usage.
79 cross-references different types of metadata records with each other to look
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/Documentation/networking/devlink/
Dice.rst1 .. SPDX-License-Identifier: GPL-2.0
13 .. list-table:: Generic parameters implemented
16 * - Name
17 - Mode
18 - Notes
19 * - ``enable_roce``
20 - runtime
21 - mutually exclusive with ``enable_iwarp``
22 * - ``enable_iwarp``
23 - runtime
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/Documentation/driver-api/usb/
Dpower-management.rst1 .. _usb-power-management:
7 :Date: Last-updated: February 2014
11 ---------
17 * Changing the default idle-delay time
24 * xHCI hardware link PM
31 -------------------------
35 component is ``suspended`` it is in a nonfunctional low-power state; it
37 ``resumed`` (returned to a functional full-power state) when the kernel
67 ----------------------
85 --------------------------
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