[PATCH v2 3/6] sched: remove redundant NULL cgroup check in task_group_path()

Li Zefan
2013-01-24T06:32:50Z

A task_group won't be online (thus no one can see it) until
cpu_cgroup_css_online(), and at that time tg->css.cgroup has
been initialized, so this NULL check is redundant.

Signed-off-by: Li Zefan <lizefan@huawei.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