document lxc.rebootsignal

doc/lxc-stop.sgml.in

@@ -70,7 +70,9 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
       the container's init process, waiting up to 60 seconds for the container
       to exit, and then returning. If the container fails to cleanly exit in
       60 seconds, it will be sent the <command>lxc.stopsignal</command>
-      (defaults to SIGKILL) to force it to shut down.
+      (defaults to SIGKILL) to force it to shut down. A request to reboot will
+      send the <command>lxc.rebootsignal</command> (defaults to SIGINT) to the
+      container's init process.
     </para>
 	<para>
 	The <optional>-W</optional>, <optional>-r</optional>,

doc/lxc.container.conf.sgml.in

@@ -180,6 +180,28 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
     </refsect2>
 
     <refsect2>
+      <title>Reboot signal</title>
+      <para>
+        Allows one to specify signal name or number, sent by lxc-stop to
+        reboot the container. This option allows signal to be specified in
+        kill(1) fashion, e.g. SIGTERM, SIGRTMIN+14, SIGRTMAX-10 or plain number.
+        The default signal is SIGINT.
+          </para>
+          <variablelist>
+        <varlistentry>
+          <term>
+            <option>lxc.rebootsignal</option>
+          </term>
+          <listitem>
+            <para>
+              specify the signal used to reboot the container
+            </para>
+          </listitem>
+        </varlistentry>
+      </variablelist>
+    </refsect2>
+
+    <refsect2>
       <title>Stop signal</title>
       <para>
         Allows one to specify signal name or number, sent by lxc-stop to forcibly