This is a note to let you know that I've just added the patch titled
sched,cgroup: Fix up task_groups list
to the 3.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
sched-cgroup-fix-up-task_groups-list.patch
and it can be found in the queue-3.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 35cf4e50b16331def6cfcbee11e49270b6db07f5 Mon Sep 17 00:00:00 2001
From: Mike Galbraith <[email protected]>
Date: Tue, 7 Aug 2012 05:00:13 +0200
Subject: sched,cgroup: Fix up task_groups list
From: Mike Galbraith <[email protected]>
commit 35cf4e50b16331def6cfcbee11e49270b6db07f5 upstream.
With multiple instances of task_groups, for_each_rt_rq() is a noop,
no task groups having been added to the rt.c list instance. This
renders __enable/disable_runtime() and print_rt_stats() noop, the
user (non) visible effect being that rt task groups are missing in
/proc/sched_debug.
Signed-off-by: Mike Galbraith <[email protected]>
Signed-off-by: Peter Zijlstra <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Thomas Gleixner <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
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
@@ -7011,6 +7011,7 @@ 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
Patches currently in stable-queue which might be from [email protected] are
queue-3.4/sched-cgroup-fix-up-task_groups-list.patch
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