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/Documentation/devicetree/bindings/sound/
Datmel,sama5d2-classd.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
4 ---
5 $id: http://devicetree.org/schemas/sound/atmel,sama5d2-classd.yaml#
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
11 - Nicolas Ferre <nicolas.ferre@microchip.com>
12 - Alexandre Belloni <alexandre.belloni@bootlin.com>
13 - Claudiu Beznea <claudiu.beznea@microchip.com>
22 - items:
23 - const: atmel,sama5d2-classd
24 - items:
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/Documentation/arch/x86/
Dresctrl.rst1 .. SPDX-License-Identifier: GPL-2.0
9 :Authors: - Fenghua Yu <fenghua.yu@intel.com>
10 - Tony Luck <tony.luck@intel.com>
11 - Vikas Shivappa <vikas.shivappa@intel.com>
38 # mount -t resctrl resctrl [-o cdp[,cdpl2][,mba_MBps][,debug]] /sys/fs/resctrl
57 pseudo-locking is a unique way of using cache control to "pin" or
59 "Cache Pseudo-Locking".
96 own settings for cache use which can over-ride
128 Corresponding region is pseudo-locked. No
131 Indicates if non-contiguous 1s value in CBM is supported.
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/Documentation/admin-guide/cgroup-v1/
Dcpusets.rst11 - Portions Copyright (c) 2004-2006 Silicon Graphics, Inc.
12 - Modified by Paul Jackson <pj@sgi.com>
13 - Modified by Christoph Lameter <cl@linux.com>
14 - Modified by Paul Menage <menage@google.com>
15 - Modified by Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
41 ----------------------
45 an on-line node that contains memory.
54 Documentation/admin-guide/cgroup-v1/cgroups.rst.
73 ----------------------------
77 non-uniform access times (NUMA) presents additional challenges for
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/Documentation/admin-guide/mm/
Dnuma_memory_policy.rst10 supported platforms with Non-Uniform Memory Access architectures since 2.4.?.
16 (``Documentation/admin-guide/cgroup-v1/cpusets.rst``)
19 programming interface that a NUMA-aware application can take advantage of. When
28 ------------------------
41 not to overload the initial boot node with boot-time
45 this is an optional, per-task policy. When defined for a
61 In a multi-threaded task, task policies apply only to the thread
64 at the time a new task policy is installed retain their current
70 the policy at the time they were allocated.
98 mapping-- i.e., at Copy-On-Write.
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/Documentation/userspace-api/media/v4l/
Ddev-raw-vbi.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
4 .. _raw-vbi:
12 information is transmitted, allowing some time while the electron beam
64 time to permit Unix tool chains, programming a device and then reading
89 overlap, or when the driver supports multiple opens and another process
106 .. flat-table:: struct v4l2_vbi_format
107 :header-rows: 0
108 :stub-columns: 0
111 * - __u32
112 - ``sampling_rate``
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/Documentation/networking/
Dnexthop-group-resilient.rst1 .. SPDX-License-Identifier: GPL-2.0
4 Resilient Next-hop Groups
7 Resilient groups are a type of next-hop group that is aimed at minimizing
12 the legacy multipath next-hop group, which uses the hash-threshold
15 To select a next hop, hash-threshold algorithm first assigns a range of
22 +-------+-------+-------+-------+-------+
24 +-------+-+-----+---+---+-----+-+-------+
26 +---------+---------+---------+---------+
29 under the hash-threshold algorithm.
32 and 4 in favor of 5. While there will usually be some overlap between the
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Dtcp_ao.rst1 .. SPDX-License-Identifier: GPL-2.0
7 TCP Authentication Option (TCP-AO) provides a TCP extension aimed at verifying
11 The intent of TCP-AO is to deprecate TCP-MD5 providing better security,
17 .. table:: Short and Limited Comparison of TCP-AO and TCP-MD5
19 +----------------------+------------------------+-----------------------+
20 | | TCP-MD5 | TCP-AO |
22 |Supported hashing |MD5 |Must support HMAC-SHA1 |
23 |algorithms |(cryptographically weak)|(chosen-prefix attacks)|
24 | | |and CMAC-AES-128 (only |
25 | | |side-channel attacks). |
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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
21 Default value of TTL field (Time To Live) for outgoing (but not
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
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/Documentation/filesystems/
Doverlayfs.rst1 .. SPDX-License-Identifier: GPL-2.0
10 overlay-filesystem functionality in Linux (sometimes referred to as
11 union-filesystems). An overlay-filesystem tries to present a
17 ---------------
25 While directories will report an st_dev from the overlay-filesystem,
26 non-directory objects may report an st_dev from the lower filesystem or
29 over the lifetime of a non-directory object. Many applications and
46 filesystem will fall back to the non xino behavior for that inode.
48 The "xino" feature can be enabled with the "-o xino=on" overlay mount option.
51 the lifetime of the filesystem. The "-o xino=auto" overlay mount option
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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
44 32-bit uids/gids yes no
45 File creation time yes no
57 -----------------
59 As squashfs is a read-only filesystem, the mksquashfs program must be used to
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Dproc.rst1 .. SPDX-License-Identifier: GPL-2.0
24 1.1 Process-Specific Subdirectories
36 3 Per-Process Parameters
37 3.1 /proc/<pid>/oom_adj & /proc/<pid>/oom_score_adj - Adjust the oom-killer
39 3.2 /proc/<pid>/oom_score - Display current oom-killer score
40 3.3 /proc/<pid>/io - Display the IO accounting fields
41 3.4 /proc/<pid>/coredump_filter - Core dump filtering settings
42 3.5 /proc/<pid>/mountinfo - Information about mounts
44 3.7 /proc/<pid>/task/<tid>/children - Information about task children
45 3.8 /proc/<pid>/fdinfo/<fd> - Information about opened file
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/Documentation/arch/x86/x86_64/
Dmm.rst1 .. SPDX-License-Identifier: GPL-2.0
7 Complete virtual memory map with 4-level page tables
12 - Negative addresses such as "-23 TB" are absolute addresses in bytes, counted down
13 from the top of the 64-bit address space. It's easier to understand the layout
14 when seen both in absolute addresses and in distance-from-top notation.
16 For example 0xffffe90000000000 == -23 TB, it's 23 TB lower than the top of the
17 64-bit address space (ffffffffffffffff).
22 - "16M TB" might look weird at first sight, but it's an easier way to visualize size
24 It also shows it nicely how incredibly large 64-bit address space is.
32 …0000000000000000 | 0 | 00007fffffffffff | 128 TB | user-space virtual memory, different …
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/Documentation/gpu/amdgpu/display/
Ddcn-overview.rst10 .. kernel-figure:: dc_pipeline_overview.svg
19 * **Display Pipe and Plane (DPP)**: This block provides pre-blend pixel
24 multiple planes, using global or per-pixel alpha.
29 * **Output Pipe Timing Combiner (OPTC)**: It generates time output to combine
38 * **Multi-Media HUB (MMHUBBUB)**: Memory controller interface for DMCUB and DWB
43 the Display Micro-Controller Unit - version B (DMCUB), which is handled via
84 ----------------------
100 a one-to-one mapping of the link encoder to PHY, but we can configure the DCN
106 ---------
114 representation and convert them to a DCN specific floating-point format (i.e.,
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/Documentation/userspace-api/
Dlandlock.rst1 .. SPDX-License-Identifier: GPL-2.0
2 .. Copyright © 2017-2020 Mickaël Salaün <mic@digikod.net>
3 .. Copyright © 2019-2020 ANSSI
4 .. Copyright © 2021-2022 Microsoft Corporation
16 new security layers in addition to the existing system-wide access-controls.
23 ``dmesg | grep landlock || journalctl -kb -g landlock`` .
48 ----------------------------------------
59 to be explicit about the denied-by-default access rights.
61 .. code-block:: c
90 on, it is safer to follow a best-effort security approach. Indeed, we
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Dseccomp_filter.rst25 to time-of-check-time-of-use (TOCTOU) attacks that are common in system
65 call will return -1 and set errno to ``EINVAL``.
73 true, ``-EACCES`` will be returned. This requirement ensures that filter
79 time, but allow for further decreasing the attack surface during
82 The above call returns 0 on success and non-zero on error.
106 task without executing the system call. ``siginfo->si_call_addr``
108 ``siginfo->si_syscall`` and ``siginfo->si_arch`` will indicate which
111 instruction). The return value register will contain an arch-
112 dependent value -- if resuming execution, set it to something
114 it with ``-ENOSYS`` could overwrite some useful information.)
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/Documentation/RCU/Design/Requirements/
DRequirements.rst16 ------------
18 Read-copy update (RCU) is a synchronization mechanism that is often used
19 as a replacement for reader-writer locking. RCU is unusual in that
20 updaters do not block readers, which means that RCU's read-side
28 thought of as an informal, high-level specification for RCU. It is
40 #. `Fundamental Non-Requirements`_
42 #. `Quality-of-Implementation Requirements`_
44 #. `Software-Engineering Requirements`_
53 ------------------------
58 #. `Grace-Period Guarantee`_
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/Documentation/admin-guide/
Dext4.rst1 .. SPDX-License-Identifier: GPL-2.0
9 (64 bit) in keeping with increasing disk capacities and state-of-the-art
12 Mailing list: linux-ext4@vger.kernel.org
23 - The latest version of e2fsprogs can be found at:
35 - Create a new filesystem using the ext4 filesystem type:
37 # mke2fs -t ext4 /dev/hda1
41 # tune2fs -O extents /dev/hda1
46 # tune2fs -I 256 /dev/hda1
48 - Mounting:
50 # mount -t ext4 /dev/hda1 /wherever
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/Documentation/virt/kvm/x86/
Dmmu.rst1 .. SPDX-License-Identifier: GPL-2.0
13 - correctness:
18 - security:
21 - performance:
23 - scaling:
25 - hardware:
27 - integration:
31 - dirty tracking:
33 and framebuffer-based displays
34 - footprint:
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/Documentation/driver-api/
Dipmi.rst12 standardized database for field-replaceable units (FRUs) and a watchdog
25 -------------
32 No matter what, you must pick 'IPMI top-level message handler' to use
35 The message handler does not provide any user-level interfaces.
50 these enabled and let the drivers auto-detect what is present.
61 "The SMBus Driver" on how to hand-configure your system.
65 the kernel, then via a kernel command-line option you can have the
74 'IPMI Poweroff' to do this. The driver will auto-detect if the system
89 ------------
96 ipmi_msghandler - This is the central piece of software for the IPMI
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/Documentation/ABI/stable/
Dsysfs-block7 with 4KB physical sectors exposing 512-byte logical
35 power-of-two and atomic_write_unit_max_bytes may also be
37 This parameter - along with atomic_write_unit_min_bytes
38 and atomic_write_unit_max_bytes - will not be larger than
50 atomic_write_unit_min. This value must be a power-of-two.
60 be a power-of-two. This value will not be larger than
72 power-of-two and at least the size as in
86 every time the backing file is changed.
111 integrity metadata. Set if the device is T10 PI-capable.
119 E.g. T10-DIF-TYPE1-CRC.
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/Documentation/driver-api/surface_aggregator/clients/
Ddtx.rst1 .. SPDX-License-Identifier: GPL-2.0+
10 User-Space DTX (Clipboard Detachment System) Interface
14 and re-attachment handling. To this end, it provides the ``/dev/surface/dtx``
15 device file, through which it can interface with a user-space daemon. This
18 unloading/reloading the graphics-driver, user-notifications, etc.
24 change. Commands are always driver-initiated, whereas events are always
56 ------------
65 being hot-unplugged while in use. More details can be found in the
70 --------------------
73 ``surface_dtx`` driver only relays events from the EC to user-space and
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/Documentation/scsi/
DChangeLog.megaraid1 Release Date : Thu Nov 16 15:32:35 EST 2006 -
9 and re-initialize its internal RAID structure.
14 2. Authors email-id domain name changed from lsil.com to lsi.com.
17 Release Date : Fri May 19 09:31:45 EST 2006 - Seokmann Ju <sju@lsil.com>
23 Root Cause: the driver registered controllers as 64-bit DMA capable
26 identifying 64-bit DMA capable controllers.
28 > -----Original Message-----
31 > To: linux-scsi@vger.kernel.org; Kolli, Neela; Mukker, Atul;
59 > scsi_add_timer: scmd: f79ed980, time: 7500, (c02b1420)
86 issue on 64-bit platform.
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Dscsi_fc_transport.rst1 .. SPDX-License-Identifier: GPL-2.0
40 --------
44 Virtualization (NPIV) mechanism, a point-to-point connection to a Fabric
48 unique view of the fabric based on fabric zoning and array lun-masking
49 (just like a normal non-NPIV adapter). Using the Virtual Fabric (VF)
57 The FC transport is now recognizing a new object - a vport. A vport is
58 an entity that has a world-wide unique World Wide Port Name (wwpn) and
72 At this time, the transport is written to create only NPIV-based
73 vports. However, consideration was given to VF-based vports and it
87 -------------------------------
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/Documentation/kernel-hacking/
Dlocking.rst37 +------------------------------------+------------------------------------+
41 +------------------------------------+------------------------------------+
43 +------------------------------------+------------------------------------+
45 +------------------------------------+------------------------------------+
47 +------------------------------------+------------------------------------+
49 +------------------------------------+------------------------------------+
51 +------------------------------------+------------------------------------+
57 +------------------------------------+------------------------------------+
61 +------------------------------------+------------------------------------+
63 +------------------------------------+------------------------------------+
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/Documentation/admin-guide/mm/damon/
Dusage.rst1 .. SPDX-License-Identifier: GPL-2.0
9 - *DAMON user space tool.*
11 system administrators who want a just-working human-friendly interface.
12 Using this, users can use the DAMON’s major features in a human-friendly way.
16 - *sysfs interface.*
23 - *Kernel Space Programming Interface.*
29 - *debugfs interface. (DEPRECATED!)*
34 linux-mm@kvack.org.
57 ---------------
60 figure, parents-children relations are represented with indentations, each
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