From 479f614110b889d5783acdaec865ede3cdb96b97 Mon Sep 17 00:00:00 2001
From: Li Zefan <lizefan@huawei.com>
Date: Fri, 29 Mar 2013 14:44:42 +0800
Subject: [PATCH] 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>
---
include/linux/cgroup.h | 1 -
kernel/cgroup.c | 3 ---
2 files changed, 4 deletions(-)
diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h
index 900af5964f55..95c02c0e35b3 100644
--- a/include/linux/cgroup.h
+++ b/include/linux/cgroup.h
@@ -458,7 +458,6 @@ struct cgroup_subsys {
void (*bind)(struct cgroup *root);
int subsys_id;
- int active;
int disabled;
int early_init;
/*
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);