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tree-wide: link to docs.kernel.org for kernel documentation

Browse Source 
https://www.kernel.org/ links to https://docs.kernel.org/ for the documentation.
See https://git.kernel.org/pub/scm/docs/kernel/website.git/commit/?id=ebc1c372850f249dd143c6d942e66c88ec610520

These URLs are shorter and nicer looking.
This commit is contained in:
nl6720 2022-07-04 17:26:30 +03:00 committed by Zbigniew Jędrzejewski-Szmek
parent 7c38952e68
commit 0e68582323
40 changed files with 78 additions and 78 deletions
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4
NEWS
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@ -737,7 +737,7 @@ CHANGES WITH 250:
unit skip/fail activation if the system's (or a slice's) memory/cpu/io
pressure is above the configured threshold, using the kernel PSI
feature. For more details see systemd.unit(5) and
https://www.kernel.org/doc/html/latest/accounting/psi.html
https://docs.kernel.org/accounting/psi.html
* The combination of ProcSubset=pid and ProtectKernelTunables=yes and/or
ProtectKernelLogs=yes can now be used.
@ -5332,7 +5332,7 @@ CHANGES WITH 240:
a client with a Wi-Fi and Ethernet both connected to the internet).
Consult the kernel documentation for details on this sysctl:
https://www.kernel.org/doc/html/latest/networking/ip-sysctl.html
https://docs.kernel.org/networking/ip-sysctl.html
* The v239 change to turn on "net.ipv4.tcp_ecn" by default has been
reverted.

2
docs/CGROUP_DELEGATION.md
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@ -24,7 +24,7 @@ container managers.
Before you read on, please make sure you read the low-level kernel
documentation about the
[unified cgroup hierarchy](https://www.kernel.org/doc/html/latest/admin-guide/cgroup-v2.html).
[unified cgroup hierarchy](https://docs.kernel.org/admin-guide/cgroup-v2.html).
This document then adds in the higher-level view from systemd.
This document augments the existing documentation we already have:

2
hwdb.d/60-autosuspend.hwdb
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@ -34,7 +34,7 @@
# the continued use of devices after a power loss (due to suspend). Disable it
# if the device will loose state without a USB power session and the driver
# is unable to recover the state when resuming. See
# https://www.kernel.org/doc/html/latest/driver-api/usb/persist.html
# https://docs.kernel.org/driver-api/usb/persist.html
# Sort by brand, model

2
man/binfmt.d.xml
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@ -41,7 +41,7 @@
<title>Configuration Format</title>
<para>Each file contains a list of binfmt_misc kernel binary format rules. Consult the kernel's <ulink
url="https://www.kernel.org/doc/html/latest/admin-guide/binfmt-misc.html">Kernel Support for
url="https://docs.kernel.org/admin-guide/binfmt-misc.html">Kernel Support for
miscellaneous Binary Formats (binfmt_misc)</ulink> documentation file for more information on
registration of additional binary formats and how to write rules.</para>

2
man/kernel-command-line.xml
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@ -36,7 +36,7 @@
<para>For command line parameters understood by the kernel, please
see
<ulink url="https://www.kernel.org/doc/html/latest/admin-guide/kernel-parameters.html"><filename>kernel-parameters.html</filename></ulink>
<ulink url="https://docs.kernel.org/admin-guide/kernel-parameters.html"><filename>kernel-parameters.html</filename></ulink>
and
<citerefentry project='man-pages'><refentrytitle>bootparam</refentrytitle><manvolnum>7</manvolnum></citerefentry>.</para>

4
man/os-release.xml
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@ -87,7 +87,7 @@
<title><filename>/etc/initrd-release</filename></title>
<para>In the <ulink
url="https://www.kernel.org/doc/html/latest/admin-guide/initrd.html">initrd</ulink>,
url="https://docs.kernel.org/admin-guide/initrd.html">initrd</ulink>,
<filename>/etc/initrd-release</filename> plays the same role as <filename>os-release</filename> in the
main system. Additionally, the presence of that file means that the system is in the initrd phase.
<filename>/etc/os-release</filename> should be symlinked to <filename>/etc/initrd-release</filename>
@ -404,7 +404,7 @@
<listitem><para>A lower-case string (mostly numeric, no spaces or other characters outside of 0–9,
a–z, ".", "_" and "-") identifying the operating system extensions support level, to indicate which
extension images are supported. See <filename>/usr/lib/extension-release.d/extension-release.<replaceable>IMAGE</replaceable></filename>,
<ulink url="https://www.kernel.org/doc/html/latest/admin-guide/initrd.html">initrd</ulink> and
<ulink url="https://docs.kernel.org/admin-guide/initrd.html">initrd</ulink> and
<citerefentry><refentrytitle>systemd-sysext</refentrytitle><manvolnum>8</manvolnum></citerefentry>)
for more information.</para>

2
man/pstore.conf.xml
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@ -34,7 +34,7 @@
<para>This file configures the behavior of
<citerefentry><refentrytitle>systemd-pstore</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
a tool for archiving the contents of the persistent storage filesystem,
<ulink url="https://www.kernel.org/doc/Documentation/ABI/testing/pstore">pstore</ulink>.
<ulink url="https://docs.kernel.org/admin-guide/abi-testing.html#abi-sys-fs-pstore">pstore</ulink>.
</para>
</refsect1>

2
man/sd_bus_creds_get_pid.xml
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@ -342,7 +342,7 @@
<para><function>sd_bus_creds_get_cgroup()</function> will retrieve
the control group path. See <ulink
url="https://www.kernel.org/doc/html/latest/admin-guide/cgroup-v1/index.html">Control Groups version 1</ulink>.
url="https://docs.kernel.org/admin-guide/cgroup-v1/index.html">Control Groups version 1</ulink>.
</para>
<para><function>sd_bus_creds_get_unit()</function> will retrieve

2
man/systemd-getty-generator.xml
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@ -40,7 +40,7 @@
place, regardless of which environment the system is started in. For example, it is sufficient to
redirect the kernel console with a kernel command line argument such as <varname>console=</varname> to
get both kernel messages and a getty prompt on a serial TTY. See <ulink
url="https://www.kernel.org/doc/html/latest/admin-guide/kernel-parameters.html">The kernel's command-line
url="https://docs.kernel.org/admin-guide/kernel-parameters.html">The kernel's command-line
parameters</ulink> for more information on the <varname>console=</varname> kernel parameter.</para>
<para><filename>systemd-getty-generator</filename> implements

2
man/systemd-hibernate-resume@.service.xml
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@ -35,7 +35,7 @@
<para><filename>systemd-hibernate-resume</filename> only supports
the in-kernel hibernation implementation, see
<ulink url="https://www.kernel.org/doc/html/latest/power/swsusp.html">Swap suspend</ulink>.
<ulink url="https://docs.kernel.org/power/swsusp.html">Swap suspend</ulink>.
Internally, it works by writing the major:minor of specified
device node to <filename>/sys/power/resume</filename>.</para>

2
man/systemd-integritysetup@.service.xml
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@ -60,7 +60,7 @@
<replaceable>device</replaceable>. See
<citerefentry><refentrytitle>integritytab</refentrytitle><manvolnum>5</manvolnum></citerefentry>
and
<ulink url="https://www.kernel.org/doc/html/latest/admin-guide/device-mapper/dm-integrity.html">
<ulink url="https://docs.kernel.org/admin-guide/device-mapper/dm-integrity.html">
Kernel dm-integrity</ulink> documentation for details.
</para></listitem>
</varlistentry>

2
man/systemd-nspawn.xml
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@ -1492,7 +1492,7 @@ After=sys-subsystem-net-devices-ens1.device</programlisting>
temporary directory on a read-only <filename>/var/</filename> directory.</para>
<para>For details about overlay file systems, see <ulink
url="https://www.kernel.org/doc/html/latest/filesystems/overlayfs.html">Overlay Filesystem</ulink>.
url="https://docs.kernel.org/filesystems/overlayfs.html">Overlay Filesystem</ulink>.
Note that the semantics of overlay file systems are substantially different from normal file systems,
in particular regarding reported device and inode information. Device and inode information may
change for a file while it is being written to, and processes might see out-of-date versions of files

2
man/systemd-system.conf.xml
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@ -263,7 +263,7 @@
on executables with setuid or setgid bits and will thus not
function properly with this option enabled. Individual units
cannot disable this option.
Also see <ulink url="https://www.kernel.org/doc/html/latest/userspace-api/no_new_privs.html">No New Privileges Flag</ulink>.
Also see <ulink url="https://docs.kernel.org/userspace-api/no_new_privs.html">No New Privileges Flag</ulink>.
</para></listitem>
</varlistentry>

2
man/systemd-veritysetup@.service.xml
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@ -60,7 +60,7 @@
<replaceable>datadevice</replaceable> and <replaceable>hashdevice</replaceable> as the backing
devices. <replaceable>roothash</replaceable> forms the root of the tree of hashes stored on
<replaceable>hashdevice</replaceable>. See
<ulink url="https://www.kernel.org/doc/html/latest/admin-guide/device-mapper/verity.html">
<ulink url="https://docs.kernel.org/admin-guide/device-mapper/verity.html">
Kernel dm-verity</ulink> documentation for details.
</para></listitem>
</varlistentry>

8
man/systemd.exec.xml
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@ -293,7 +293,7 @@
<filename>/proc/</filename>. If <literal>ptraceable</literal> all processes that cannot be
<function>ptrace()</function>'ed by a process are hidden to it. If <literal>default</literal> no
restrictions on <filename>/proc/</filename> access or visibility are made. For further details see
<ulink url="https://www.kernel.org/doc/html/latest/filesystems/proc.html#mount-options">The /proc
<ulink url="https://docs.kernel.org/filesystems/proc.html#mount-options">The /proc
Filesystem</ulink>. It is generally recommended to run most system services with this option set to
<literal>invisible</literal>. This option is implemented via file system namespacing, and thus cannot
be used with services that shall be able to install mount points in the host file system
@ -318,7 +318,7 @@
introspection are made invisible in the <filename>/proc/</filename> file system configured for the
unit's processes. This controls the <literal>subset=</literal> mount option of the
<literal>procfs</literal> instance for the unit. For further details see <ulink
url="https://www.kernel.org/doc/html/latest/filesystems/proc.html#mount-options">The /proc
url="https://docs.kernel.org/filesystems/proc.html#mount-options">The /proc
Filesystem</ulink>. Note that Linux exposes various kernel APIs via <filename>/proc/</filename>,
which are made unavailable with this setting. Since these APIs are used frequently this option is
useful only in a few, specific cases, and is not suitable for most non-trivial programs.</para>
@ -725,7 +725,7 @@ CapabilityBoundingSet=~CAP_B CAP_C</programlisting>
by them, <command>systemctl show</command> shows the original value of this setting. In case the
service will be run in a new mount namespace anyway and SELinux is disabled, all file systems
are mounted with <constant>MS_NOSUID</constant> flag. Also see
<ulink url="https://www.kernel.org/doc/html/latest/userspace-api/no_new_privs.html">No New
<ulink url="https://docs.kernel.org/userspace-api/no_new_privs.html">No New
Privileges Flag</ulink>.</para></listitem>
</varlistentry>
@ -1042,7 +1042,7 @@ CapabilityBoundingSet=~CAP_B CAP_C</programlisting>
<listitem><para>Sets the adjustment value for the Linux kernel's Out-Of-Memory (OOM) killer score for
executed processes. Takes an integer between -1000 (to disable OOM killing of processes of this unit)
and 1000 (to make killing of processes of this unit under memory pressure very likely). See <ulink
url="https://www.kernel.org/doc/html/latest/filesystems/proc.html">The /proc Filesystem</ulink> for
url="https://docs.kernel.org/filesystems/proc.html">The /proc Filesystem</ulink> for
details. If not specified defaults to the OOM score adjustment level of the service manager itself,
which is normally at 0.</para>

6
man/systemd.netdev.xml
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@ -90,7 +90,7 @@
</row></thead>
<tbody>
<row><entry><varname>bond</varname></entry>
<entry>A bond device is an aggregation of all its slave devices. See <ulink url="https://www.kernel.org/doc/html/latest/networking/bonding.html">Linux Ethernet Bonding Driver HOWTO</ulink> for details.</entry></row>
<entry>A bond device is an aggregation of all its slave devices. See <ulink url="https://docs.kernel.org/networking/bonding.html">Linux Ethernet Bonding Driver HOWTO</ulink> for details.</entry></row>
<row><entry><varname>bridge</varname></entry>
<entry>A bridge device is a software switch, and each of its slave devices and the bridge itself are ports of the switch.</entry></row>
@ -165,7 +165,7 @@
<entry>Media Access Control Security (MACsec) is an 802.1AE IEEE industry-standard security technology that provides secure communication for all traffic on Ethernet links. MACsec provides point-to-point security on Ethernet links between directly connected nodes and is capable of identifying and preventing most security threats.</entry></row>
<row><entry><varname>vrf</varname></entry>
<entry>A Virtual Routing and Forwarding (<ulink url="https://www.kernel.org/doc/html/latest/networking/vrf.html">VRF</ulink>) interface to create separate routing and forwarding domains.</entry></row>
<entry>A Virtual Routing and Forwarding (<ulink url="https://docs.kernel.org/networking/vrf.html">VRF</ulink>) interface to create separate routing and forwarding domains.</entry></row>
<row><entry><varname>vcan</varname></entry>
<entry>The virtual CAN driver (vcan). Similar to the network loopback devices, vcan offers a virtual local CAN interface.</entry></row>
@ -2021,7 +2021,7 @@
</variablelist>
<para>For more detail information see
<ulink url="https://www.kernel.org/doc/html/latest/networking/bonding.html">
<ulink url="https://docs.kernel.org/networking/bonding.html">
Linux Ethernet Bonding Driver HOWTO</ulink></para>
</refsect1>

4
man/systemd.network.xml
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@ -670,7 +670,7 @@ Table=1234</programlisting></para>
enable IP packet forwarding for the specified address family. This controls the
<filename>net.ipv4.ip_forward</filename> and <filename>net.ipv6.conf.all.forwarding</filename>
sysctl options of the network interface (see
<ulink url="https://www.kernel.org/doc/html/latest/networking/ip-sysctl.html">IP Sysctl</ulink>
<ulink url="https://docs.kernel.org/networking/ip-sysctl.html">IP Sysctl</ulink>
for details about sysctl options). Defaults to <literal>no</literal>.</para>
<para>Note: this setting controls a global kernel option, and does so one way only: if a
@ -726,7 +726,7 @@ Table=1234</programlisting></para>
section, see below.</para>
<para>Also see
<ulink url="https://www.kernel.org/doc/html/latest/networking/ip-sysctl.html">IP Sysctl</ulink>
<ulink url="https://docs.kernel.org/networking/ip-sysctl.html">IP Sysctl</ulink>
in the kernel documentation regarding <literal>accept_ra</literal>, but note that systemd's
setting of <constant>1</constant> (i.e. true) corresponds to kernel's setting of
<constant>2</constant>.</para>

52
man/systemd.resource-control.xml
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@ -102,7 +102,7 @@
<title>Unified and Legacy Control Group Hierarchies</title>
<para>The unified control group hierarchy is the new version of kernel control group interface, see
<ulink url="https://www.kernel.org/doc/html/latest/admin-guide/cgroup-v2.html">Control Groups v2</ulink>.
<ulink url="https://docs.kernel.org/admin-guide/cgroup-v2.html">Control Groups v2</ulink>.
Depending on the resource type, there are differences in resource control capabilities. Also, because of
interface changes, some resource types have separate set of options on the unified hierarchy.</para>
@ -145,7 +145,7 @@
application.</para>
<para>Legacy control group hierarchy (see <ulink
url="https://www.kernel.org/doc/html/latest/admin-guide/cgroup-v1/">Control Groups version 1</ulink>),
url="https://docs.kernel.org/admin-guide/cgroup-v1/">Control Groups version 1</ulink>),
also called cgroup-v1, doesn't allow safe delegation of controllers to unprivileged processes. If the
system uses the legacy control group hierarchy, resource control is disabled for the systemd user
instance, see
@ -184,8 +184,8 @@
hierarchy is used on the system. These options take an integer value and control the
<literal>cpu.weight</literal> control group attribute. The allowed range is 1 to 10000. Defaults to
100. For details about this control group attribute, see <ulink
url="https://www.kernel.org/doc/html/latest/admin-guide/cgroup-v2.html">Control Groups v2</ulink>
and <ulink url="https://www.kernel.org/doc/html/latest/scheduler/sched-design-CFS.html">CFS
url="https://docs.kernel.org/admin-guide/cgroup-v2.html">Control Groups v2</ulink>
and <ulink url="https://docs.kernel.org/scheduler/sched-design-CFS.html">CFS
Scheduler</ulink>. The available CPU time is split up among all units within one slice relative to
their CPU time weight. A higher weight means more CPU time, a lower weight means less.</para>
@ -207,8 +207,8 @@
available on one CPU. Use values &gt; 100% for allotting CPU time on more than one CPU. This controls the
<literal>cpu.max</literal> attribute on the unified control group hierarchy and
<literal>cpu.cfs_quota_us</literal> on legacy. For details about these control group attributes, see <ulink
url="https://www.kernel.org/doc/html/latest/admin-guide/cgroup-v2.html">Control Groups v2</ulink> and <ulink
url="https://www.kernel.org/doc/html/latest/scheduler/sched-bwc.html">CFS Bandwidth Control</ulink>.
url="https://docs.kernel.org/admin-guide/cgroup-v2.html">Control Groups v2</ulink> and <ulink
url="https://docs.kernel.org/scheduler/sched-bwc.html">CFS Bandwidth Control</ulink>.
Setting <varname>CPUQuota=</varname> to an empty value unsets the quota.</para>
<para>Example: <varname>CPUQuota=20%</varname> ensures that the executed processes will never get more than
@ -229,8 +229,8 @@
<para>This controls the second field of <literal>cpu.max</literal> attribute on the unified control group hierarchy
and <literal>cpu.cfs_period_us</literal> on legacy. For details about these control group attributes, see
<ulink url="https://www.kernel.org/doc/html/latest/admin-guide/cgroup-v2.html">Control Groups v2</ulink> and
<ulink url="https://www.kernel.org/doc/html/latest/scheduler/sched-design-CFS.html">CFS Scheduler</ulink>.</para>
<ulink url="https://docs.kernel.org/admin-guide/cgroup-v2.html">Control Groups v2</ulink> and
<ulink url="https://docs.kernel.org/scheduler/sched-design-CFS.html">CFS Scheduler</ulink>.</para>
<para>Example: <varname>CPUQuotaPeriodSec=10ms</varname> to request that the CPU quota is measured in periods of 10ms.</para>
</listitem>
@ -318,7 +318,7 @@
useful in order to always inherit all of the protection afforded by ancestors.
This controls the <literal>memory.min</literal> or <literal>memory.low</literal> control group attribute.
For details about this control group attribute, see <ulink
url="https://www.kernel.org/doc/html/latest/admin-guide/cgroup-v2.html#memory-interface-files">Memory Interface Files</ulink>.</para>
url="https://docs.kernel.org/admin-guide/cgroup-v2.html#memory-interface-files">Memory Interface Files</ulink>.</para>
<para>This setting is supported only if the unified control group hierarchy is used and disables
<varname>MemoryLimit=</varname>.</para>
@ -348,7 +348,7 @@
system. If assigned the
special value <literal>infinity</literal>, no memory throttling is applied. This controls the
<literal>memory.high</literal> control group attribute. For details about this control group attribute, see
<ulink url="https://www.kernel.org/doc/html/latest/admin-guide/cgroup-v2.html#memory-interface-files">Memory Interface Files</ulink>.</para>
<ulink url="https://docs.kernel.org/admin-guide/cgroup-v2.html#memory-interface-files">Memory Interface Files</ulink>.</para>
<para>This setting is supported only if the unified control group hierarchy is used and disables
<varname>MemoryLimit=</varname>.</para>
@ -369,7 +369,7 @@
percentage value may be specified, which is taken relative to the installed physical memory on the system. If
assigned the special value <literal>infinity</literal>, no memory limit is applied. This controls the
<literal>memory.max</literal> control group attribute. For details about this control group attribute, see
<ulink url="https://www.kernel.org/doc/html/latest/admin-guide/cgroup-v2.html#memory-interface-files">Memory Interface Files</ulink>.</para>
<ulink url="https://docs.kernel.org/admin-guide/cgroup-v2.html#memory-interface-files">Memory Interface Files</ulink>.</para>
<para>This setting replaces <varname>MemoryLimit=</varname>.</para>
</listitem>
@ -385,7 +385,7 @@
parsed as Kilobytes, Megabytes, Gigabytes, or Terabytes (with the base 1024), respectively. If assigned the
special value <literal>infinity</literal>, no swap limit is applied. This controls the
<literal>memory.swap.max</literal> control group attribute. For details about this control group attribute,
see <ulink url="https://www.kernel.org/doc/html/latest/admin-guide/cgroup-v2.html#memory-interface-files">Memory Interface Files</ulink>.</para>
see <ulink url="https://docs.kernel.org/admin-guide/cgroup-v2.html#memory-interface-files">Memory Interface Files</ulink>.</para>
<para>This setting is supported only if the unified control group hierarchy is used and disables
<varname>MemoryLimit=</varname>.</para>
@ -420,7 +420,7 @@
of tasks or a percentage value that is taken relative to the configured maximum number of tasks on the
system. If assigned the special value <literal>infinity</literal>, no tasks limit is applied. This controls
the <literal>pids.max</literal> control group attribute. For details about this control group attribute, see
<ulink url="https://www.kernel.org/doc/html/latest/admin-guide/cgroup-v1/pids.html">Process Number Controller</ulink>.
<ulink url="https://docs.kernel.org/admin-guide/cgroup-v1/pids.html">Process Number Controller</ulink>.
</para>
<para>The system default for this setting may be controlled with
@ -454,7 +454,7 @@
group hierarchy is used on the system. Takes a single weight value (between 1 and 10000) to set the
default block I/O weight. This controls the <literal>io.weight</literal> control group attribute,
which defaults to 100. For details about this control group attribute, see <ulink
url="https://www.kernel.org/doc/html/latest/admin-guide/cgroup-v2.html#io-interface-files">IO
url="https://docs.kernel.org/admin-guide/cgroup-v2.html#io-interface-files">IO
Interface Files</ulink>. The available I/O bandwidth is split up among all units within one slice
relative to their block I/O weight. A higher weight means more I/O bandwidth, a lower weight means
less.</para>
@ -482,7 +482,7 @@
device of the file system of the file is determined. This controls the <literal>io.weight</literal> control
group attribute, which defaults to 100. Use this option multiple times to set weights for multiple devices.
For details about this control group attribute, see <ulink
url="https://www.kernel.org/doc/html/latest/admin-guide/cgroup-v2.html#io-interface-files">IO Interface Files</ulink>.</para>
url="https://docs.kernel.org/admin-guide/cgroup-v2.html#io-interface-files">IO Interface Files</ulink>.</para>
<para>This setting replaces <varname>BlockIODeviceWeight=</varname> and disables settings prefixed with
<varname>BlockIO</varname> or <varname>StartupBlockIO</varname>.</para>
@ -512,7 +512,7 @@
"/dev/disk/by-path/pci-0000:00:1f.2-scsi-0:0:0:0 5M"). This controls the <literal>io.max</literal> control
group attributes. Use this option multiple times to set bandwidth limits for multiple devices. For details
about this control group attribute, see <ulink
url="https://www.kernel.org/doc/html/latest/admin-guide/cgroup-v2.html#io-interface-files">IO Interface Files</ulink>.
url="https://docs.kernel.org/admin-guide/cgroup-v2.html#io-interface-files">IO Interface Files</ulink>.
</para>
<para>These settings replace <varname>BlockIOReadBandwidth=</varname> and
@ -538,7 +538,7 @@
"/dev/disk/by-path/pci-0000:00:1f.2-scsi-0:0:0:0 1K"). This controls the <literal>io.max</literal> control
group attributes. Use this option multiple times to set IOPS limits for multiple devices. For details about
this control group attribute, see <ulink
url="https://www.kernel.org/doc/html/latest/admin-guide/cgroup-v2.html#io-interface-files">IO Interface Files</ulink>.
url="https://docs.kernel.org/admin-guide/cgroup-v2.html#io-interface-files">IO Interface Files</ulink>.
</para>
<para>These settings are supported only if the unified control group hierarchy is used and disable settings
@ -559,7 +559,7 @@
system of the file is determined. This controls the <literal>io.latency</literal> control group
attribute. Use this option multiple times to set latency target for multiple devices. For details about this
control group attribute, see <ulink
url="https://www.kernel.org/doc/html/latest/admin-guide/cgroup-v2.html#io-interface-files">IO Interface Files</ulink>.</para>
url="https://docs.kernel.org/admin-guide/cgroup-v2.html#io-interface-files">IO Interface Files</ulink>.</para>
<para>Implies <literal>IOAccounting=yes</literal>.</para>
@ -743,7 +743,7 @@
Cgroup-bpf hooks in the form of BPF programs loaded to the BPF filesystem are attached with cgroup-bpf attach
flags determined by the unit. For details about attachment types and flags see <ulink
url="https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/plain/include/uapi/linux/bpf.h"/>.
For general BPF documentation please refer to <ulink url="https://www.kernel.org/doc/html/latest/bpf/index.html"/>.</para>
For general BPF documentation please refer to <ulink url="https://docs.kernel.org/bpf/index.html"/>.</para>
<para>The specification of BPF program consists of a <replaceable>type</replaceable> followed by a
<replaceable>program-path</replaceable> with <literal>:</literal> as the separator:
@ -926,7 +926,7 @@ RestrictNetworkInterfaces=~eth1</programlisting>
(<emphasis>m</emphasis>knod), respectively. On cgroup-v1 this controls the
<literal>devices.allow</literal> control group attribute. For details about this control group
attribute, see <ulink
url="https://www.kernel.org/doc/html/latest/admin-guide/cgroup-v1/devices.html">Device Whitelist Controller</ulink>.
url="https://docs.kernel.org/admin-guide/cgroup-v1/devices.html">Device Whitelist Controller</ulink>.
In the unified cgroup hierarchy this functionality is implemented using eBPF filtering.</para>
<para>When access to <emphasis>all</emphasis> physical devices should be disallowed,
@ -1191,7 +1191,7 @@ DeviceAllow=/dev/loop-control
<para>Assign the specified CPU time share weight to the processes executed. These options take an integer
value and control the <literal>cpu.shares</literal> control group attribute. The allowed range is 2 to
262144. Defaults to 1024. For details about this control group attribute, see <ulink
url="https://www.kernel.org/doc/html/latest/scheduler/sched-design-CFS.html">CFS Scheduler</ulink>.
url="https://docs.kernel.org/scheduler/sched-design-CFS.html">CFS Scheduler</ulink>.
The available CPU time is split up among all units within one slice relative to their CPU time share
weight.</para>
@ -1219,7 +1219,7 @@ DeviceAllow=/dev/loop-control
<literal>infinity</literal>, no memory limit is applied. This controls the
<literal>memory.limit_in_bytes</literal> control group attribute. For details about this control group
attribute, see <ulink
url="https://www.kernel.org/doc/html/latest/admin-guide/cgroup-v1/memory.html">Memory Resource Controller</ulink>.</para>
url="https://docs.kernel.org/admin-guide/cgroup-v1/memory.html">Memory Resource Controller</ulink>.</para>
<para>Implies <literal>MemoryAccounting=yes</literal>.</para>
@ -1250,7 +1250,7 @@ DeviceAllow=/dev/loop-control
group hierarchy is used on the system. Takes a single weight value (between 10 and 1000) to set the default
block I/O weight. This controls the <literal>blkio.weight</literal> control group attribute, which defaults to
500. For details about this control group attribute, see <ulink
url="https://www.kernel.org/doc/html/latest/admin-guide/cgroup-v1/blkio-controller.html">Block IO Controller</ulink>.
url="https://docs.kernel.org/admin-guide/cgroup-v1/blkio-controller.html">Block IO Controller</ulink>.
The available I/O bandwidth is split up among all units within one slice relative to their block I/O
weight.</para>
@ -1281,7 +1281,7 @@ DeviceAllow=/dev/loop-control
file system of the file is determined. This controls the <literal>blkio.weight_device</literal> control group
attribute, which defaults to 1000. Use this option multiple times to set weights for multiple devices. For
details about this control group attribute, see <ulink
url="https://www.kernel.org/doc/html/latest/admin-guide/cgroup-v1/blkio-controller.html">Block IO Controller</ulink>.</para>
url="https://docs.kernel.org/admin-guide/cgroup-v1/blkio-controller.html">Block IO Controller</ulink>.</para>
<para>Implies
<literal>BlockIOAccounting=yes</literal>.</para>
@ -1305,7 +1305,7 @@ DeviceAllow=/dev/loop-control
<literal>blkio.throttle.read_bps_device</literal> and <literal>blkio.throttle.write_bps_device</literal>
control group attributes. Use this option multiple times to set bandwidth limits for multiple devices. For
details about these control group attributes, see <ulink
url="https://www.kernel.org/doc/html/latest/admin-guide/cgroup-v1/blkio-controller.html">Block IO Controller</ulink>.
url="https://docs.kernel.org/admin-guide/cgroup-v1/blkio-controller.html">Block IO Controller</ulink>.
</para>
<para>Implies
@ -1336,7 +1336,7 @@ DeviceAllow=/dev/loop-control
<citerefentry><refentrytitle>systemd.special</refentrytitle><manvolnum>7</manvolnum></citerefentry>,
<citerefentry><refentrytitle>systemd-oomd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
The documentation for control groups and specific controllers in the Linux kernel:
<ulink url="https://www.kernel.org/doc/html/latest/admin-guide/cgroup-v2.html">Control Groups v2</ulink>.
<ulink url="https://docs.kernel.org/admin-guide/cgroup-v2.html">Control Groups v2</ulink>.
</para>
</refsect1>
</refentry>

4
man/systemd.service.xml
View File

@ -1103,7 +1103,7 @@
<term><varname>USBFunctionDescriptors=</varname></term>
<listitem><para>Configure the location of a file containing
<ulink
url="https://www.kernel.org/doc/html/latest/usb/functionfs.html">USB
url="https://docs.kernel.org/usb/functionfs.html">USB
FunctionFS</ulink> descriptors, for implementation of USB
gadget functions. This is used only in conjunction with a
socket unit with <varname>ListenUSBFunction=</varname>
@ -1138,7 +1138,7 @@
manager. If set to <constant>kill</constant> and one of the service's processes is killed by the OOM
killer the kernel is instructed to kill all remaining processes of the service too, by setting the
<filename>memory.oom.group</filename> attribute to <constant>1</constant>; also see <ulink
url="https://www.kernel.org/doc/html/latest/admin-guide/cgroup-v2.html">kernel documentation</ulink>.
url="https://docs.kernel.org/admin-guide/cgroup-v2.html">kernel documentation</ulink>.
</para>
<para>Defaults to the setting <varname>DefaultOOMPolicy=</varname> in

4
man/systemd.socket.xml
View File

@ -299,7 +299,7 @@
<varlistentry>
<term><varname>ListenUSBFunction=</varname></term>
<listitem><para>Specifies a <ulink
url="https://www.kernel.org/doc/html/latest/usb/functionfs.html">USB
url="https://docs.kernel.org/usb/functionfs.html">USB
FunctionFS</ulink> endpoints location to listen on, for
implementation of USB gadget functions. This expects an
absolute file system path of a FunctionFS mount point as the argument.
@ -615,7 +615,7 @@
the security label of the FIFO, or the security label for the
incoming or outgoing connections of the socket, respectively.
See <ulink
url="https://www.kernel.org/doc/html/latest/admin-guide/LSM/Smack.html">Smack</ulink>
url="https://docs.kernel.org/admin-guide/LSM/Smack.html">Smack</ulink>
for details.</para></listitem>
</varlistentry>

2
man/systemd.unit.xml
View File

@ -1698,7 +1698,7 @@
limited to <literal>10sec</literal>, <literal>1min</literal> and <literal>5min</literal>. The
<literal>full</literal> PSI will be checked first, and if not found <literal>some</literal> will be
checked. For more details, see the documentation on <ulink
url="https://www.kernel.org/doc/html/latest/accounting/psi.html">PSI (Pressure Stall Information)
url="https://docs.kernel.org/accounting/psi.html">PSI (Pressure Stall Information)
</ulink>.</para>
<para>Optionally, the threshold value can be prefixed with the slice unit under which the pressure will be checked,

6
man/systemd.xml
View File

@ -210,7 +210,7 @@
<para>Processes systemd spawns are placed in individual Linux
control groups named after the unit which they belong to in the
private systemd hierarchy. (see <ulink
url="https://www.kernel.org/doc/html/latest/admin-guide/cgroup-v1/index.html">Control Groups version 1</ulink>
url="https://docs.kernel.org/admin-guide/cgroup-v1/index.html">Control Groups version 1</ulink>
for more information about control groups, or short "cgroups").
systemd uses this to effectively keep track of processes. Control
group information is maintained in the kernel, and is accessible
@ -915,7 +915,7 @@
<listitem><para>When specified without an argument or with a true argument,
enables the usage of
<ulink url="https://www.kernel.org/doc/html/latest/admin-guide/cgroup-v2.html">unified cgroup hierarchy</ulink>
<ulink url="https://docs.kernel.org/admin-guide/cgroup-v2.html">unified cgroup hierarchy</ulink>
(a.k.a. cgroups-v2). When specified with a false argument, fall back to
hybrid or full legacy cgroup hierarchy.</para>
@ -933,7 +933,7 @@
(see previous option). When specified without an argument or with a true
argument, disables the use of "hybrid" cgroup hierarchy (i.e. a cgroups-v2
tree used for systemd, and
<ulink url="https://www.kernel.org/doc/Documentation/cgroup-v1/">legacy
<ulink url="https://docs.kernel.org/admin-guide/cgroup-v1/index.html">legacy
cgroup hierarchy</ulink>, a.k.a. cgroups-v1, for other controllers), and
forces a full "legacy" mode. When specified with a false argument, enables
the use of "hybrid" hierarchy.</para>

2
src/boot/efi/cpio.c
View File

@ -71,7 +71,7 @@ static EFI_STATUS pack_cpio_one(
/* Serializes one file in the cpio format understood by the kernel initrd logic.
*
* See: https://www.kernel.org/doc/html/latest/driver-api/early-userspace/buffer-format.html */
* See: https://docs.kernel.org/driver-api/early-userspace/buffer-format.html */
if (contents_size > UINT32_MAX) /* cpio cannot deal with > 32bit file sizes */
return EFI_LOAD_ERROR;

2
src/boot/efi/linux_x86.c
View File

@ -7,7 +7,7 @@
* this x86 specific linux_exec function passes the initrd by setting the
* corresponding fields in the setup_header struct.
*
* see https://www.kernel.org/doc/html/latest/x86/boot.html
* see https://docs.kernel.org/x86/boot.html
*/
#include <efi.h>

2
src/core/dbus-unit.c
View File

@ -1284,7 +1284,7 @@ static int append_cgroup(sd_bus_message *reply, const char *p, Set *pids) {
pid_t pid;
/* libvirt / qemu uses threaded mode and cgroup.procs cannot be read at the lower levels.
* From https://www.kernel.org/doc/html/latest/admin-guide/cgroup-v2.html#threads,
* From https://docs.kernel.org/admin-guide/cgroup-v2.html#threads,
* “cgroup.procs” in a threaded domain cgroup contains the PIDs of all processes in
* the subtree and is not readable in the subtree proper. */
r = cg_read_pid(f, &pid);

2
src/home/homework.c
View File

@ -274,7 +274,7 @@ int user_record_authenticate(
static void drop_caches_now(void) {
int r;
/* Drop file system caches now. See https://www.kernel.org/doc/html/latest/admin-guide/sysctl/vm.html
/* Drop file system caches now. See https://docs.kernel.org/admin-guide/sysctl/vm.html
* for details. We write "2" into /proc/sys/vm/drop_caches to ensure dentries/inodes are flushed, but
* not more. */

2
src/shared/cgroup-show.c
View File

@ -105,7 +105,7 @@ static int show_cgroup_one_by_path(
pid_t pid;
/* libvirt / qemu uses threaded mode and cgroup.procs cannot be read at the lower levels.
* From https://www.kernel.org/doc/html/latest/admin-guide/cgroup-v2.html#threads,
* From https://docs.kernel.org/admin-guide/cgroup-v2.html#threads,
* “cgroup.procs” in a threaded domain cgroup contains the PIDs of all processes in
* the subtree and is not readable in the subtree proper. */
r = cg_read_pid(f, &pid);

2
src/shared/linux/bpf.h
View File

@ -473,7 +473,7 @@ union bpf_iter_link_info {
* Verify and load BPF Type Format (BTF) metadata into the kernel,
* returning a new file descriptor associated with the metadata.
* BTF is described in more detail at
* https://www.kernel.org/doc/html/latest/bpf/btf.html.
* https://docs.kernel.org/bpf/btf.html.
*
* The *btf* parameter must point to valid memory providing
* *btf_size* bytes of BTF binary metadata.

4
src/shared/udev-util.c
View File

@ -608,7 +608,7 @@ static int device_is_power_sink(sd_device *device) {
assert(device);
/* USB-C power supply device has two power roles: source or sink. See,
* https://www.kernel.org/doc/Documentation/ABI/testing/sysfs-class-typec */
* https://docs.kernel.org/admin-guide/abi-testing.html#abi-file-testing-sysfs-class-typec */
r = sd_device_enumerator_new(&e);
if (r < 0)
@ -690,7 +690,7 @@ int on_ac_power(void) {
/* We assume every power source is AC, except for batteries. See
* https://github.com/torvalds/linux/blob/4eef766b7d4d88f0b984781bc1bcb574a6eafdc7/include/linux/power_supply.h#L176
* for defined power source types. Also see:
* https://www.kernel.org/doc/Documentation/ABI/testing/sysfs-class-power */
* https://docs.kernel.org/admin-guide/abi-testing.html#abi-file-testing-sysfs-class-power */
if (streq(val, "Battery")) {
log_device_debug(d, "The power supply is battery, ignoring.");
continue;

2
src/test/test-web-util.c
View File

@ -8,7 +8,7 @@ TEST(is_valid_documentation_url) {
assert_se(documentation_url_is_valid("https://www.freedesktop.org/wiki/Software/systemd"));
assert_se(documentation_url_is_valid("https://www.kernel.org/doc/Documentation/binfmt_misc.txt")); /* dead */
assert_se(documentation_url_is_valid("https://www.kernel.org/doc/Documentation/admin-guide/binfmt-misc.rst"));
assert_se(documentation_url_is_valid("https://www.kernel.org/doc/html/latest/admin-guide/binfmt-misc.html"));
assert_se(documentation_url_is_valid("https://docs.kernel.org/admin-guide/binfmt-misc.html"));
assert_se(documentation_url_is_valid("file:/foo/foo"));
assert_se(documentation_url_is_valid("man:systemd.special(7)"));
assert_se(documentation_url_is_valid("info:bar"));

2
sysctl.d/50-default.conf
View File

@ -14,7 +14,7 @@
# System Request functionality of the kernel (SYNC)
#
# Use kernel.sysrq = 1 to allow all keys.
# See https://www.kernel.org/doc/html/latest/admin-guide/sysrq.html for a list
# See https://docs.kernel.org/admin-guide/sysrq.html for a list
# of values and keys.
kernel.sysrq = 16

2
test/fuzz/fuzz-unit-file/proc-sys-fs-binfmt_misc.automount
View File

@ -10,7 +10,7 @@ automount
[Unit]
Description=Arbitrary Executable File Formats File System Automount Point
Documentation=https://www.kernel.org/doc/html/latest/admin-guide/binfmt-misc.html
Documentation=https://docs.kernel.org/admin-guide/binfmt-misc.html
Documentation=https://www.freedesktop.org/wiki/Software/systemd/APIFileSystems
DefaultDependencies=no
Before=sysinit.target

2
units/dev-hugepages.mount
View File

@ -9,7 +9,7 @@
[Unit]
Description=Huge Pages File System
Documentation=https://www.kernel.org/doc/html/latest/admin-guide/mm/hugetlbpage.html
Documentation=https://docs.kernel.org/admin-guide/mm/hugetlbpage.html
Documentation=https://www.freedesktop.org/wiki/Software/systemd/APIFileSystems
DefaultDependencies=no
Before=sysinit.target

2
units/proc-sys-fs-binfmt_misc.automount
View File

@ -9,7 +9,7 @@
[Unit]
Description=Arbitrary Executable File Formats File System Automount Point
Documentation=https://www.kernel.org/doc/html/latest/admin-guide/binfmt-misc.html
Documentation=https://docs.kernel.org/admin-guide/binfmt-misc.html
Documentation=https://www.freedesktop.org/wiki/Software/systemd/APIFileSystems
DefaultDependencies=no
Before=sysinit.target

2
units/proc-sys-fs-binfmt_misc.mount
View File

@ -9,7 +9,7 @@
[Unit]
Description=Arbitrary Executable File Formats File System
Documentation=https://www.kernel.org/doc/html/latest/admin-guide/binfmt-misc.html
Documentation=https://docs.kernel.org/admin-guide/binfmt-misc.html
Documentation=https://www.freedesktop.org/wiki/Software/systemd/APIFileSystems
DefaultDependencies=no

2
units/sys-fs-fuse-connections.mount
View File

@ -9,7 +9,7 @@
[Unit]
Description=FUSE Control File System
Documentation=https://www.kernel.org/doc/html/latest/filesystems/fuse.html
Documentation=https://docs.kernel.org/filesystems/fuse.html
Documentation=https://www.freedesktop.org/wiki/Software/systemd/APIFileSystems
DefaultDependencies=no
ConditionPathExists=/sys/fs/fuse/connections

2
units/sys-kernel-config.mount
View File

@ -9,7 +9,7 @@
[Unit]
Description=Kernel Configuration File System
Documentation=https://www.kernel.org/doc/html/latest/filesystems/configfs.html
Documentation=https://docs.kernel.org/filesystems/configfs.html
Documentation=https://www.freedesktop.org/wiki/Software/systemd/APIFileSystems
DefaultDependencies=no
ConditionPathExists=/sys/kernel/config

2
units/sys-kernel-debug.mount
View File

@ -9,7 +9,7 @@
[Unit]
Description=Kernel Debug File System
Documentation=https://www.kernel.org/doc/html/latest/filesystems/debugfs.html
Documentation=https://docs.kernel.org/filesystems/debugfs.html
Documentation=https://www.freedesktop.org/wiki/Software/systemd/APIFileSystems
DefaultDependencies=no
ConditionPathExists=/sys/kernel/debug

2
units/sys-kernel-tracing.mount
View File

@ -9,7 +9,7 @@
[Unit]
Description=Kernel Trace File System
Documentation=https://www.kernel.org/doc/html/latest/trace/ftrace.html
Documentation=https://docs.kernel.org/trace/ftrace.html
Documentation=https://www.freedesktop.org/wiki/Software/systemd/APIFileSystems
DefaultDependencies=no
ConditionVirtualization=!lxc

2
units/systemd-binfmt.service.in
View File

@ -10,7 +10,7 @@
[Unit]
Description=Set Up Additional Binary Formats
Documentation=man:systemd-binfmt.service(8) man:binfmt.d(5)
Documentation=https://www.kernel.org/doc/html/latest/admin-guide/binfmt-misc.html
Documentation=https://docs.kernel.org/admin-guide/binfmt-misc.html
Documentation=https://www.freedesktop.org/wiki/Software/systemd/APIFileSystems
DefaultDependencies=no
Conflicts=shutdown.target