man/cgget: add '-c' option description

Add a brief explanation about '-c' option. It displays the controllers
and their versions.

Signed-off-by: Kamalesh Babulal <kamalesh.babulal@oracle.com>
Signed-off-by: Tom Hromatka <tom.hromatka@oracle.com>
(cherry picked from commit 3371bbb2b388dfa34f948fd8c17261bd31c8c022)

diff --git a/doc/man/cgget.1 b/doc/man/cgget.1
index 0f2a0285120609777fa6ce9942577c1eab16e823..bba60682f9e55007232e0f73f6604573f53f5984 100644 (file)
--- a/doc/man/cgget.1
+++ b/doc/man/cgget.1
@@ -33,6 +33,11 @@ ignores the default systemd delegated hierarchy path and
 constructs the path of the control groups relative to the
 cgroup root hierarchy.
 
+.TP
+.B -c
+displays the controllers and their versions.
+This option can be used along with -m option.
+
 .TP
 .B -g <controller>
 defines controllers whose values should be displayed.