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/Documentation/arch/s390/
Dcommon_io.rst2 S/390 common I/O-Layer
9 -----------------------
17 device := {all | [!]ipldev | [!]condev | [!]<devno> | [!]<devno>-<devno>}
19 The given devices will be ignored by the common I/O-layer; no detection
24 An ignored device can be un-ignored later; see the "/proc entries"-section for
34 operator). The '!' operator will cause the I/O-layer to _not_ ignore a device.
40 cio_ignore=0.0.0023-0.0.0042,0.0.4711
47 cio_ignore=all,!0.0.4711,!0.0.fd00-0.0.fd02
54 /proc entries
55 -------------
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/Documentation/admin-guide/mm/
Dshrinker_debugfs.rst11 unique id: e.g. *kfree_rcu-0* or *sb-xfs:vda1-36*.
18 ------
26 dquota-cache-16 sb-devpts-28 sb-proc-47 sb-tmpfs-42
27 mm-shadow-18 sb-devtmpfs-5 sb-proc-48 sb-tmpfs-43
28 mm-zspool:zram0-34 sb-hugetlbfs-17 sb-pstore-31 sb-tmpfs-44
29 rcu-kfree-0 sb-hugetlbfs-33 sb-rootfs-2 sb-tmpfs-49
30 sb-aio-20 sb-iomem-12 sb-securityfs-6 sb-tracefs-13
31 sb-anon_inodefs-15 sb-mqueue-21 sb-selinuxfs-22 sb-xfs:vda1-36
32 sb-bdev-3 sb-nsfs-4 sb-sockfs-8 sb-zsmalloc-19
33 sb-bpf-32 sb-pipefs-14 sb-sysfs-26 thp-deferred_split-10
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Dhugetlbpage.rst13 256M and ppc64 supports 4K and 16M. A TLB is a cache of virtual-to-physical
27 The ``/proc/meminfo`` file provides information about the total number of
34 The output of ``cat /proc/meminfo`` will include lines like::
58 the pool above the value in ``/proc/sys/vm/nr_hugepages``. The
60 ``/proc/sys/vm/nr_overcommit_hugepages``.
76 ``/proc/filesystems`` should also show a filesystem of type "hugetlbfs"
79 ``/proc/sys/vm/nr_hugepages`` indicates the current number of "persistent" huge
93 Once a number of huge pages have been pre-allocated to the kernel huge page
168 When multiple huge page sizes are supported, ``/proc/sys/vm/nr_hugepages``
169 indicates the current number of pre-allocated huge pages of the default size.
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/Documentation/firmware-guide/acpi/apei/
Doutput_format.rst1 .. SPDX-License-Identifier: GPL-2.0
35 [processor_type: <integer>, <proc type string>]
36 [processor_isa: <integer>, <proc isa string>]
38 <proc error type strings>]
39 [operation: <integer>, <proc operation string>]
41 <proc flags strings>]
50 <proc type string>* := IA32/X64 | IA64
52 <proc isa string>* := IA32 | IA64 | X64
55 [cache error][, TLB error][, bus error][, micro-architectural error]
57 <proc operation string>* := unknown or generic | data read | data write | \
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/Documentation/ABI/stable/
Dprocfs-audit_loginuid2 Date: 2005-02-01
3 KernelVersion: 2.6.11-rc2 1e2d1492e178 ("[PATCH] audit: handle loginuid through proc")
4 Contact: linux-audit@redhat.com
7 The /proc/$pid/loginuid pseudofile is written to set and
17 What: Audit Login Session ID
18 Date: 2008-03-13
19 KernelVersion: 2.6.25-rc7 1e0bd7550ea9 ("[PATCH] export sessionid alongside the loginuid in procfs")
20 Contact: linux-audit@redhat.com
23 The /proc/$pid/sessionid pseudofile is read to get the
24 audit login session ID of process $pid as a decimal
/Documentation/filesystems/
Dproc.rst1 .. SPDX-License-Identifier: GPL-2.0
4 The /proc Filesystem
8 /proc/sys Terrehon Bowden <terrehon@pacbell.net>, October 7 1999
11 move /proc/sys Shen Feng <shen@cn.fujitsu.com> April 1 2009
24 1.1 Process-Specific Subdirectories
26 1.3 IDE devices in /proc/ide
27 1.4 Networking info in /proc/net
29 1.6 Parallel port info in /proc/parport
30 1.7 TTY info in /proc/tty
31 1.8 Miscellaneous kernel statistics in /proc/stat
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/Documentation/devicetree/bindings/remoteproc/
Dqcom,rpm-proc.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/remoteproc/qcom,rpm-proc.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Bjorn Andersson <andersson@kernel.org>
11 - Konrad Dybcio <konradybcio@kernel.org>
12 - Stephan Gerhold <stephan@gerhold.net>
17 +--------------------------------------------+
18 | RPM subsystem (qcom,rpm-proc) |
20 reset | +---------------+ +-----+ +-----+ |
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Dst,stm32-rproc.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/remoteproc/st,stm32-rproc.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
14 - Fabien Dessenne <fabien.dessenne@foss.st.com>
15 - Arnaud Pouliquen <arnaud.pouliquen@foss.st.com>
19 const: st,stm32mp1-m4
31 reset-names:
33 - const: mcu_rst
34 - const: hold_boot
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Dti,k3-m4f-rproc.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/remoteproc/ti,k3-m4f-rproc.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Hari Nagalla <hnagalla@ti.com>
11 - Mathieu Poirier <mathieu.poirier@linaro.org>
20 $ref: /schemas/arm/keystone/ti,k3-sci-common.yaml#
25 - ti,am64-m4fss
27 power-domains:
30 "#address-cells":
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Dti,k3-dsp-rproc.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/remoteproc/ti,k3-dsp-rproc.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Suman Anna <s-anna@ti.com>
13 The TI K3 family of SoCs usually have one or more TI DSP Core sub-systems
14 that are used to offload some of the processor-intensive tasks or algorithms,
17 These processor sub-systems usually contain additional sub-modules like
23 Each DSP Core sub-system is represented as a single DT node. Each node has a
31 - ti,am62a-c7xv-dsp
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/Documentation/devicetree/bindings/mailbox/
Dst,stm32-ipcc.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/mailbox/st,stm32-ipcc.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
16 - Fabien Dessenne <fabien.dessenne@foss.st.com>
17 - Arnaud Pouliquen <arnaud.pouliquen@foss.st.com>
21 const: st,stm32mp1-ipcc
31 - description: rx channel occupied
32 - description: tx channel free
34 interrupt-names:
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/Documentation/sound/designs/
Dprocfile.rst2 Proc Files of ALSA Drivers
10 ALSA has its own proc tree, /proc/asound. Many useful information are
15 card-specific files are stored in the ``card*`` subdirectories.
23 index, the id string, short and long descriptions.
40 ``<card>-<device>: <name>``
44 ``<card>-<device>: <id>: <name> : <sub-streams>``
61 The card-specific files are found in ``/proc/asound/card*`` directories.
62 Some drivers (e.g. cmipci) have their own proc entries for the
63 register dump, etc (e.g. ``/proc/asound/card*/cmipci`` shows the register
81 mapping by writing to this device. Read OSS-Emulation.txt for
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Dmidi-2.0.rst12 - Support of Universal MIDI Packet (UMP)
13 - Support of MIDI 2.0 protocol messages
14 - Transparent conversions between UMP and legacy MIDI 1.0 byte stream
15 - MIDI-CI for property and profile configurations
26 MIDI-CI is a high-level protocol that can talk with the MIDI device
31 the encoding/decoding of MIDI protocols on UMP, while MIDI-CI is
32 supported in user-space over the standard SysEx.
65 When a device supports MIDI 2.0, the USB-audio driver probes and uses
69 `midi2_enable=0` option to snd-usb-audio driver module, too.
78 option to snd-usb-audio driver for skipping the UMP v1.1 inquiries.
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/Documentation/networking/
Dmulti-pf-netdev.rst1 .. SPDX-License-Identifier: GPL-2.0
5 Multi-PF Netdev
11 - `Background`_
12 - `Overview`_
13 - `mlx5 implementation`_
14 - `Channels distribution`_
15 - `Observability`_
16 - `Steering`_
17 - `Mutually exclusive features`_
22 The Multi-PF NIC technology enables several CPUs within a multi-socket server to connect directly to
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Dpktgen.rst1 .. SPDX-License-Identifier: GPL-2.0
7 Enable CONFIG_NET_PKTGEN to compile and build pktgen either in-kernel
10 Monitoring and controlling is done via /proc. It is easiest to select a
22 /proc/net/pktgen/pgctrl
23 /proc/net/pktgen/kpktgend_X
24 /proc/net/pktgen/ethX
31 overload type of benchmarking, as this could hurt the normal use-case.
35 # ethtool -G ethX tx 1024
44 ring-buffers for various performance reasons, and packets stalling
49 and the cleanup interval is affected by the ethtool --coalesce setting
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Dioam6-sysctl.rst1 .. SPDX-License-Identifier: GPL-2.0
8 /proc/sys/net/conf/<iface>/ioam6_* variables:
11 ioam6_enabled - BOOL
15 * 0 - disabled (default)
16 * 1 - enabled
18 ioam6_id - SHORT INTEGER
19 Define the IOAM id of this interface.
23 ioam6_id_wide - INTEGER
24 Define the wide IOAM id of this interface.
/Documentation/bpf/
Ds390.rst12 2. One-time setup
27 --variant=minbase \
28 --include=sudo \
30 ./s390-toolchain
31 sudo mount --rbind /dev ./s390-toolchain/dev
32 sudo mount --rbind /proc ./s390-toolchain/proc
33 sudo mount --rbind /sys ./s390-toolchain/sys
34 sudo chroot ./s390-toolchain
38 sudo dpkg --add-architecture s390x
39 sudo apt-get update
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/Documentation/admin-guide/laptops/
Dthinkpad-acpi.rst9 - Borislav Deianov <borislav@users.sf.net>
10 - Henrique de Moraes Holschuh <hmh@hmh.eng.br>
12 http://ibm-acpi.sf.net/
19 This driver used to be named ibm-acpi until kernel 2.6.21 and release
20 0.13-20070314. It used to be in the drivers/acpi tree, but it was
21 moved to the drivers/misc tree and renamed to thinkpad-acpi for kernel
25 The driver is named "thinkpad-acpi". In some places, like module
29 "tpacpi" is used as a shorthand where "thinkpad-acpi" would be too
33 ------
38 - Fn key combinations
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/Documentation/devicetree/bindings/watchdog/
Datmel,at91sam9-wdt.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
4 ---
5 $id: http://devicetree.org/schemas/watchdog/atmel,at91sam9-wdt.yaml#
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
11 - Eugen Hristev <eugen.hristev@microchip.com>
15 const: atmel,at91sam9260-wdt
26 atmel,max-heartbeat-sec:
32 atmel,min-heartbeat-sec:
35 must be smaller than the max-heartbeat-sec value. It is used to
39 atmel,watchdog-type:
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/Documentation/admin-guide/nfs/
Dnfsroot.rst10 Updated 2006 by Nico Schottelius <nico-kernel-nfsroot@schottelius.org>
18 In order to use a diskless system, such as an X-terminal or printer server for
19 example, it is necessary for the root filesystem to be present on a non-disk
21 Documentation/filesystems/ramfs-rootfs-initramfs.rst), a ramdisk (see
22 Documentation/admin-guide/initrd.rst) or a filesystem mounted via NFS. The
34 built-in during configuration. Once this has been selected, the nfsroot
54 This is necessary to enable the pseudo-NFS-device. Note that it's not a
59 nfsroot=[<server-ip>:]<root-dir>[,<nfs-options>]
63 <server-ip> Specifies the IP address of the NFS server.
68 <root-dir> Name of the directory on the server to mount as root.
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/Documentation/sound/hd-audio/
Dnotes.rst2 More Notes on HD-Audio Driver
11 HD-audio is the new standard on-board audio component on modern PCs
12 after AC97. Although Linux has been supporting HD-audio since long
15 This document explains the brief trouble-shooting and debugging
16 methods for the HD-audio hardware.
18 The HD-audio component consists of two parts: the controller chip and
19 the codec chips on the HD-audio bus. Linux provides a single driver
20 for all controllers, snd-hda-intel. Although the driver name contains
21 a word of a well-known hardware vendor, it's not specific to it but for
22 all controller chips by other companies. Since the HD-audio
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/Documentation/ABI/testing/
Dsysfs-kernel-irq7 The information here is similar to that in /proc/interrupts
8 but in a more machine-friendly format. This directory contains
15 Description: The IRQ action chain. A comma-separated list of zero or more
22 Description: Human-readable chip name supplied by the associated device
36 Description: Human-readable flow handler name as defined by the irq chip
44 is a comma-separated list of counters; one per CPU in CPU id
46 CPU ids. This differs from the behavior of /proc/interrupts
/Documentation/devicetree/bindings/interconnect/
Dmediatek,cci.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/interconnect/mediatek,cci.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Jia-Wei Chang <jia-wei.chang@mediatek.com>
11 - Johnson Wang <johnson.wang@mediatek.com>
21 - mediatek,mt8183-cci
22 - mediatek,mt8186-cci
26 - description:
28 - description:
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/Documentation/admin-guide/
Dparport.rst4 The ``parport`` code provides parallel-port support under Linux. This
16 port-sharing) and architecture-dependent (which deals with actually
28 architecture-dependent code with (for example)::
32 to tell the ``parport`` code that you want three PC-style ports, one at
34 auto-detected IRQ. Currently, PC-style (``parport_pc``), Sun ``bpp``,
43 --------
60 ------------------------
63 for collecting IEEE 1284 device ID information. This has now been
68 parport0: Printer, BJC-210 (Canon)
70 The probe information is available from files in ``/proc/sys/dev/parport/``.
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Ddynamic-debug-howto.rst9 debug-print code to obtain additional kernel information.
11 If ``/proc/dynamic_debug/control`` exists, your kernel has dynamic
17 ``cat /proc/dynamic_debug/control`` to see them.
22 - source filename
23 - function name
24 - line number (including ranges of line numbers)
25 - module name
26 - format string
27 - class name (as known/declared by each module)
29 NOTE: To actually get the debug-print output on the console, you may
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