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

* '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

diff --git a/kernel/sched.c b/kernel/sched.c
index cc1f81b50b82dddb19658dc4d10dd419087a59fc..98890807375b87df9f134f3fdd7505153547e678 100644 (file)
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -8909,6 +8909,9 @@ static int sched_rt_global_constraints(void)
        u64 rt_runtime, rt_period;
        int ret = 0;
 
+       if (sysctl_sched_rt_period <= 0)
+               return -EINVAL;
+
        rt_period = ktime_to_ns(tg->rt_bandwidth.rt_period);
        rt_runtime = tg->rt_bandwidth.rt_runtime;
 
@@ -8925,6 +8928,9 @@ static int sched_rt_global_constraints(void)
        unsigned long flags;
        int i;
 
+       if (sysctl_sched_rt_period <= 0)
+               return -EINVAL;
+
        spin_lock_irqsave(&def_rt_bandwidth.rt_runtime_lock, flags);
        for_each_possible_cpu(i) {
                struct rt_rq *rt_rq = &cpu_rq(i)->rt;

diff --git a/kernel/sched_rt.c b/kernel/sched_rt.c
index 552310798dadf13e3b2059d5f84e050f7e0926e2..1113157b20581b07cbcdf325d4d3428cdd7cd288 100644 (file)
--- a/kernel/sched_rt.c
+++ b/kernel/sched_rt.c
@@ -350,6 +350,7 @@ static void __enable_runtime(struct rq *rq)
                spin_lock(&rt_rq->rt_runtime_lock);
                rt_rq->rt_runtime = rt_b->rt_runtime;
                rt_rq->rt_time = 0;
+               rt_rq->rt_throttled = 0;
                spin_unlock(&rt_rq->rt_runtime_lock);
                spin_unlock(&rt_b->rt_runtime_lock);
        }