cgroups: move cgroup_event_listener.c to tools/cgroup

Move the cgroup_event_listener.c tool from Documentation into the new
tools/cgroup directory.

This change involves wiring cgroup_event_listener.c into the tools/
make system so that is can be built with:
  $ make tools/cgroup

Signed-off-by: Greg Thelen <gthelen@google.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

1 files changed, 0 insertions, 2 deletions

diff --git a/Documentation/cgroups/00-INDEX b/Documentation/cgroups/00-INDEX
index f78b90a35ad0..f5635a09c3f6 100644
--- a/Documentation/cgroups/00-INDEX
+++ b/Documentation/cgroups/00-INDEX
@@ -4,8 +4,6 @@ blkio-controller.txt
         - Description for Block IO Controller, implementation and usage details.
 cgroups.txt
         - Control Groups definition, implementation details, examples and API.
-cgroup_event_listener.c
-        - A user program for cgroup listener.
 cpuacct.txt
         - CPU Accounting Controller; account CPU usage for groups of tasks.
 cpusets.txt