cgroup: Enable cgroup hierarchy for blkio cgroup

Enable cgroup hierarchy for blkio cgroup
Acked-by: NDaniel P. Berrange <berrange@redhat.com>
Signed-off-by: NGui Jianfeng <guijianfeng@cn.fujitsu.com>

AUTHORS

@@ -152,6 +152,7 @@ Patches have also been contributed by:
   Alon Levy            <alevy@redhat.com>
   Hero Phương          <herophuong93@gmail.com>
   Zdenek Styblik       <stybla@turnovfree.net>
+  Gui Jianfeng         <guijianfeng@cn.fujitsu.com>
 
   [....send patches to get your name here....]
 

src/util/cgroup.c

@@ -37,7 +37,7 @@
 
 VIR_ENUM_IMPL(virCgroupController, VIR_CGROUP_CONTROLLER_LAST,
               "cpu", "cpuacct", "cpuset", "memory", "devices",
-              "freezer");
+              "freezer", "blkio");
 
 struct virCgroupController {
     int type;

src/util/cgroup.h

@@ -22,6 +22,7 @@ enum {
     VIR_CGROUP_CONTROLLER_MEMORY,
     VIR_CGROUP_CONTROLLER_DEVICES,
     VIR_CGROUP_CONTROLLER_FREEZER,
+    VIR_CGROUP_CONTROLLER_BLKIO,
 
     VIR_CGROUP_CONTROLLER_LAST
 };