linux-kernel - [PATCH 3/6] sched: remove redundant NULL cgroup check in task_group

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Message-ID: <50F7B063.6040004@huawei.com>
Date:	Thu, 17 Jan 2013 16:03:47 +0800
From:	Li Zefan <lizefan@...wei.com>
To:	Tejun Heo <tj@...nel.org>
CC:	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Cgroups <cgroups@...r.kernel.org>
Subject: [PATCH 3/6] sched: remove redundant NULL cgroup check in task_group_path()

cpu_cgroup_css_online() is called after cgroup is fully created,
and it makes this check redundant.

Signed-off-by: Li Zefan <lizefan@...wei.com>
---
 kernel/sched/debug.c | 7 -------
 1 file changed, 7 deletions(-)

diff --git a/kernel/sched/debug.c b/kernel/sched/debug.c
index 2cd3c1b..38df0db 100644
--- a/kernel/sched/debug.c
+++ b/kernel/sched/debug.c
@@ -110,13 +110,6 @@ static char *task_group_path(struct task_group *tg)
 	if (autogroup_path(tg, group_path, PATH_MAX))
 		return group_path;
 
-	/*
-	 * May be NULL if the underlying cgroup isn't fully-created yet
-	 */
-	if (!tg->css.cgroup) {
-		group_path[0] = '\0';
-		return group_path;
-	}
 	cgroup_path(tg->css.cgroup, group_path, PATH_MAX);
 	return group_path;
 }
-- 
1.8.0.2
--
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