diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-08-16 17:15:32 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-08-16 17:15:32 -0700 |
| commit | c100548d4610f727b95faffd69cb54cb280cd114 (patch) | |
| tree | 0add41ffba7ced1f4742a327684fdb2bb57148c8 | |
| parent | 0473b7992943ee7b182aa4afeb602ba5d37d36e0 (diff) | |
| parent | 55cd53404c5cc5fd94708232e3b4aa4a9388917b (diff) | |
| download | linux-c100548d4610f727b95faffd69cb54cb280cd114.tar.bz2 | |
Merge branch 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
sched: scale sysctl_sched_shares_ratelimit with nr_cpus
sched: fix rt-bandwidth hotplug race
sched: fix the race between walk_tg_tree and sched_create_group
| -rw-r--r-- | kernel/sched.c | 8 | ||||
| -rw-r--r-- | kernel/sched_rt.c | 2 |
2 files changed, 6 insertions, 4 deletions
diff --git a/kernel/sched.c b/kernel/sched.c index 95e6ad3c231d..9a1ddb84e26d 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -808,9 +808,9 @@ const_debug unsigned int sysctl_sched_nr_migrate = 32; /* * ratelimit for updating the group shares. - * default: 0.5ms + * default: 0.25ms */ -const_debug unsigned int sysctl_sched_shares_ratelimit = 500000; +unsigned int sysctl_sched_shares_ratelimit = 250000; /* * period over which we measure -rt task cpu usage in us. @@ -5786,6 +5786,8 @@ static inline void sched_init_granularity(void) sysctl_sched_latency = limit; sysctl_sched_wakeup_granularity *= factor; + + sysctl_sched_shares_ratelimit *= factor; } #ifdef CONFIG_SMP @@ -8508,8 +8510,8 @@ struct task_group *sched_create_group(struct task_group *parent) WARN_ON(!parent); /* root should already exist */ tg->parent = parent; - list_add_rcu(&tg->siblings, &parent->children); INIT_LIST_HEAD(&tg->children); + list_add_rcu(&tg->siblings, &parent->children); spin_unlock_irqrestore(&task_group_lock, flags); return tg; diff --git a/kernel/sched_rt.c b/kernel/sched_rt.c index 6163e4cf885b..998ba54b4543 100644 --- a/kernel/sched_rt.c +++ b/kernel/sched_rt.c @@ -298,7 +298,7 @@ static void __disable_runtime(struct rq *rq) struct rt_rq *iter = sched_rt_period_rt_rq(rt_b, i); s64 diff; - if (iter == rt_rq) + if (iter == rt_rq || iter->rt_runtime == RUNTIME_INF) continue; spin_lock(&iter->rt_runtime_lock); |