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Merge branch 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

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* 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  sched: fix deadlock in setting scheduler parameter to zero
  sched: fix 2.6.27-rc5 couldn't boot on tulsa machine randomly
This commit is contained in:
Linus Torvalds 2008-09-19 16:17:12 -07:00
commit b4df9d88a6
2 changed files with 7 additions and 0 deletions
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6
kernel/sched.c
View file

@ -8909,6 +8909,9 @@ static int sched_rt_global_constraints(void)
u64 rt_runtime, rt_period; u64 rt_runtime, rt_period;
int ret = 0; int ret = 0;
if (sysctl_sched_rt_period <= 0)
return -EINVAL;
rt_period = ktime_to_ns(tg->rt_bandwidth.rt_period); rt_period = ktime_to_ns(tg->rt_bandwidth.rt_period);
rt_runtime = tg->rt_bandwidth.rt_runtime; rt_runtime = tg->rt_bandwidth.rt_runtime;
@ -8925,6 +8928,9 @@ static int sched_rt_global_constraints(void)
unsigned long flags; unsigned long flags;
int i; int i;
if (sysctl_sched_rt_period <= 0)
return -EINVAL;
spin_lock_irqsave(&def_rt_bandwidth.rt_runtime_lock, flags); spin_lock_irqsave(&def_rt_bandwidth.rt_runtime_lock, flags);
for_each_possible_cpu(i) { for_each_possible_cpu(i) {
struct rt_rq *rt_rq = &cpu_rq(i)->rt; struct rt_rq *rt_rq = &cpu_rq(i)->rt;

1
kernel/sched_rt.c
View file

@ -350,6 +350,7 @@ static void __enable_runtime(struct rq *rq)
spin_lock(&rt_rq->rt_runtime_lock); spin_lock(&rt_rq->rt_runtime_lock);
rt_rq->rt_runtime = rt_b->rt_runtime; rt_rq->rt_runtime = rt_b->rt_runtime;
rt_rq->rt_time = 0; rt_rq->rt_time = 0;
rt_rq->rt_throttled = 0;
spin_unlock(&rt_rq->rt_runtime_lock); spin_unlock(&rt_rq->rt_runtime_lock);
spin_unlock(&rt_b->rt_runtime_lock); spin_unlock(&rt_b->rt_runtime_lock);
} }