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authorIngo Molnar <mingo@elte.hu>2009-03-04 11:42:31 +0100
committerIngo Molnar <mingo@elte.hu>2009-03-04 11:42:31 +0100
commit8163d88c79dca35478a2405c837733ac50ea4c39 (patch)
tree6acae066a09b7dcbedab4a35ad62eba4ba3fd83c /kernel/sched.c
parenta1ef58f442542d8b3e3b963339fbc522c36e827c (diff)
parentfec6c6fec3e20637bee5d276fb61dd8b49a3f9cc (diff)
downloadop-kernel-dev-8163d88c79dca35478a2405c837733ac50ea4c39.zip
op-kernel-dev-8163d88c79dca35478a2405c837733ac50ea4c39.tar.gz
Merge commit 'v2.6.29-rc7' into perfcounters/core
Conflicts: arch/x86/mm/iomap_32.c
Diffstat (limited to 'kernel/sched.c')
-rw-r--r--kernel/sched.c15
1 files changed, 12 insertions, 3 deletions
diff --git a/kernel/sched.c b/kernel/sched.c
index 16b7363..78f4424 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -223,7 +223,7 @@ static void start_rt_bandwidth(struct rt_bandwidth *rt_b)
{
ktime_t now;
- if (rt_bandwidth_enabled() && rt_b->rt_runtime == RUNTIME_INF)
+ if (!rt_bandwidth_enabled() || rt_b->rt_runtime == RUNTIME_INF)
return;
if (hrtimer_active(&rt_b->rt_period_timer))
@@ -9306,6 +9306,16 @@ static int sched_rt_global_constraints(void)
return ret;
}
+
+int sched_rt_can_attach(struct task_group *tg, struct task_struct *tsk)
+{
+ /* Don't accept realtime tasks when there is no way for them to run */
+ if (rt_task(tsk) && tg->rt_bandwidth.rt_runtime == 0)
+ return 0;
+
+ return 1;
+}
+
#else /* !CONFIG_RT_GROUP_SCHED */
static int sched_rt_global_constraints(void)
{
@@ -9399,8 +9409,7 @@ cpu_cgroup_can_attach(struct cgroup_subsys *ss, struct cgroup *cgrp,
struct task_struct *tsk)
{
#ifdef CONFIG_RT_GROUP_SCHED
- /* Don't accept realtime tasks when there is no way for them to run */
- if (rt_task(tsk) && cgroup_tg(cgrp)->rt_bandwidth.rt_runtime == 0)
+ if (!sched_rt_can_attach(cgroup_tg(cgrp), tsk))
return -EINVAL;
#else
/* We don't support RT-tasks being in separate groups */
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