cgroup: Kill subsys.active flag

The only user was cpuacct.

Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Li Zefan <lizefan@huawei.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/5155385A.4040207@huawei.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 0 insertions, 3 deletions

diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index a32f9432666c..5c462813722d 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -4468,7 +4468,6 @@ static void __init cgroup_init_subsys(struct cgroup_subsys *ss)
          * need to invoke fork callbacks here. */
         BUG_ON(!list_empty(&init_task.tasks));
 
-        ss->active = 1;
         BUG_ON(online_css(ss, dummytop));
 
         mutex_unlock(&cgroup_mutex);
@@ -4573,7 +4572,6 @@ int __init_or_module cgroup_load_subsys(struct cgroup_subsys *ss)
         }
         write_unlock(&css_set_lock);
 
-        ss->active = 1;
         ret = online_css(ss, dummytop);
         if (ret)
                 goto err_unload;
@@ -4614,7 +4612,6 @@ void cgroup_unload_subsys(struct cgroup_subsys *ss)
         mutex_lock(&cgroup_mutex);
 
         offline_css(ss, dummytop);
-        ss->active = 0;
 
         if (ss->use_id)
                 idr_destroy(&ss->idr);