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Subject[patch] sched,cgroup_sched: fix up task_groups list buglet
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On Tue, 2012-04-03 at 11:19 +0200, Mike Galbraith wrote: 
> ec514c48 made rt queues invisible in sched_debug, restore visibility.

<g> removing their cloak of invisibility might be a tad better than just
making them visible while futzing with annoying RT_GROUP_SCHED throttle.

sched,cgroup_sched: fix up task_groups list

Oops happened during sched migration to kernel/sched, fix it up.

Signed-off-by: Mike Galbraith <efault@gmx.de>
Cc: stable@kernel.org # v3.3
---
kernel/sched/core.c | 1 +
kernel/sched/sched.h | 2 +-
2 files changed, 2 insertions(+), 1 deletion(-)

--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -6871,6 +6871,7 @@ int in_sched_functions(unsigned long add

#ifdef CONFIG_CGROUP_SCHED
struct task_group root_task_group;
+LIST_HEAD(task_groups);
#endif

DECLARE_PER_CPU(cpumask_var_t, load_balance_tmpmask);
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -80,7 +80,7 @@ extern struct mutex sched_domains_mutex;
struct cfs_rq;
struct rt_rq;

-static LIST_HEAD(task_groups);
+extern struct list_head task_groups;

struct cfs_bandwidth {
#ifdef CONFIG_CFS_BANDWIDTH



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