linux-kernel - [PATCH] sched, cgroup: enclose root_task_group with macro CONFIG_CGROUP

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Message-Id: <1477822876-41902-1-git-send-email-yanhaishuang@cmss.chinamobile.com>
Date:   Sun, 30 Oct 2016 18:21:16 +0800
From:   Haishuang Yan <yanhaishuang@...s.chinamobile.com>
To:     Ingo Molnar <mingo@...nel.org>, Andy Lutomirski <luto@...nel.org>,
        "Peter Zijlstra (Intel)" <peterz@...radead.org>
Cc:     linux-kernel@...r.kernel.org,
        Haishuang Yan <yanhaishuang@...s.chinamobile.com>
Subject: [PATCH] sched, cgroup: enclose root_task_group with macro CONFIG_CGROUP_SCHED.

root_task_group defined in sched/core.c is enclosed by
CONFIG_CGROUP_SCHED, so the export declaration should
also be enclosed.

Signed-off-by: Haishuang Yan <yanhaishuang@...s.chinamobile.com>
---
 include/linux/init_task.h | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/include/linux/init_task.h b/include/linux/init_task.h
index 325f649..f3f73fa 100644
--- a/include/linux/init_task.h
+++ b/include/linux/init_task.h
@@ -132,9 +132,8 @@
 
 extern struct cred init_cred;
 
-extern struct task_group root_task_group;
-
 #ifdef CONFIG_CGROUP_SCHED
+extern struct task_group root_task_group;
 # define INIT_CGROUP_SCHED(tsk)						\
 	.sched_task_group = &root_task_group,
 #else
-- 
1.8.3.1