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-rw-r--r--man/pam_systemd.xml20
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diff --git a/man/pam_systemd.xml b/man/pam_systemd.xml
index 3dc3714734..d43ed231f2 100644
--- a/man/pam_systemd.xml
+++ b/man/pam_systemd.xml
@@ -200,6 +200,26 @@
terminated only on their complete
logout.</para></listitem>
</varlistentry>
+
+ <varlistentry>
+ <term><option>controllers=</option></term>
+
+ <listitem><para>Takes a comma
+ seperated list of cgroup controllers
+ in which hierarchies a user/session
+ cgroup will be created by defautl for
+ each user logging in. If ommited,
+ defaults to 'cpu', meaning that in
+ addition to creating per-user and
+ per-session cgroups in systemd's own
+ hierarchy, groups are created in the
+ 'cpu' hierarchy, on order to ensure
+ that every use and every sessions gets
+ an equal amount of CPU time,
+ regardless how many processes a user
+ or session might
+ own.</para></listitem>
+ </varlistentry>
</variablelist>
<para>Note that setting <varname>kill-user=1</varname>