man: avoid abbreviated "cgroups" terminology (#4396)

Let's avoid the overly abbreviated "cgroups" terminology. Let's instead write:

"Linux Control Groups (cgroups)" is the long form wherever the term is
introduced in prose. Use "control groups" in the short form wherever the term
is used within brief explanations.

Follow-up to: #4381

4 files changed, 8 insertions, 11 deletions

diff --git a/man/sd_bus_creds_get_pid.xml b/man/sd_bus_creds_get_pid.xml
index 4c05835568..9e68d5e8c7 100644
--- a/man/sd_bus_creds_get_pid.xml
+++ b/man/sd_bus_creds_get_pid.xml
@@ -366,7 +366,7 @@
     -ENXIO is returned.</para>
 
     <para><function>sd_bus_creds_get_cgroup()</function> will retrieve
-    the cgroup path. See <ulink
+    the control group path. See <ulink
     url="https://www.kernel.org/doc/Documentation/cgroups/cgroups.txt">cgroups.txt</ulink>.
     </para>
 
diff --git a/man/systemd.exec.xml b/man/systemd.exec.xml
index 6228b786f7..a5a453031f 100644
--- a/man/systemd.exec.xml
+++ b/man/systemd.exec.xml
@@ -75,8 +75,7 @@
     [Service], [Socket], [Mount], or [Swap] sections, depending on the
     unit type.</para>
 
-    <para>In addition, options which control resources through cgroups
-    are listed in
+    <para>In addition, options which control resources through Linux Control Groups (cgroups) are listed in
     <citerefentry><refentrytitle>systemd.resource-control</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
     Those options complement options listed here.</para>
   </refsect1>
diff --git a/man/systemd.resource-control.xml b/man/systemd.resource-control.xml
index a97bcca9df..02878b28a0 100644
--- a/man/systemd.resource-control.xml
+++ b/man/systemd.resource-control.xml
@@ -60,12 +60,10 @@
   <refsect1>
     <title>Description</title>
 
-    <para>Unit configuration files for services, slices, scopes,
-    sockets, mount points, and swap devices share a subset of
-    configuration options for resource control of spawned
-    processes. Internally, this relies on the Control Groups
-    kernel concept for organizing processes in a hierarchical tree of
-    named groups for the purpose of resource management.</para>
+    <para>Unit configuration files for services, slices, scopes, sockets, mount points, and swap devices share a subset
+    of configuration options for resource control of spawned processes. Internally, this relies on the Linux Control
+    Groups (cgroups) kernel concept for organizing processes in a hierarchical tree of named groups for the purpose of
+    resource management.</para>
 
     <para>This man page lists the configuration options shared by
     those six unit types. See
@@ -116,7 +114,7 @@
           <term><option>CPU</option></term>
           <listitem>
             <para>Due to the lack of consensus in the kernel community, the CPU controller support on the unified
-            cgroup hierarchy requires out-of-tree kernel patches. See <ulink
+            control group hierarchy requires out-of-tree kernel patches. See <ulink
             url="https://git.kernel.org/cgit/linux/kernel/git/tj/cgroup.git/tree/Documentation/cgroup-v2-cpu.txt?h=cgroup-v2-cpu">cgroup-v2-cpu.txt</ulink>.</para>
 
             <para><varname>CPUWeight=</varname> and <varname>StartupCPUWeight=</varname> replace
diff --git a/man/systemd.unit.xml b/man/systemd.unit.xml
index a4f5711d7a..04efee2891 100644
--- a/man/systemd.unit.xml
+++ b/man/systemd.unit.xml
@@ -1252,7 +1252,7 @@
           <row>
       <entry><literal>%r</literal></entry>
       <entry>Control group path of the slice the unit is placed in</entry>
-      <entry>This usually maps to the parent cgroup path of <literal>%c</literal>.</entry>
+      <entry>This usually maps to the parent control group path of <literal>%c</literal>.</entry>
           </row>
           <row>
       <entry><literal>%R</literal></entry>