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Merge branch 'sched/urgent' into sched/core

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Merge in the current fixes branch, we are going to apply dependent patches.

Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Ingo Molnar
2012-09-04 14:31:00 +02:00
parent b9bb50db91 9450d57eab
commit 59f979455d
759 changed files with 8310 additions and 5879 deletions
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34
kernel/sched/core.c
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@@ -4784,27 +4784,17 @@ void idle_task_exit(void)
}
/*
* While a dead CPU has no uninterruptible tasks queued at this point,
* it might still have a nonzero ->nr_uninterruptible counter, because
* for performance reasons the counter is not stricly tracking tasks to
* their home CPUs. So we just add the counter to another CPU's counter,
* to keep the global sum constant after CPU-down:
* Since this CPU is going 'away' for a while, fold any nr_active delta
* we might have. Assumes we're called after migrate_tasks() so that the
* nr_active count is stable.
*
* Also see the comment "Global load-average calculations".
*/
static void migrate_nr_uninterruptible(struct rq *rq_src)
static void calc_load_migrate(struct rq *rq)
{
struct rq *rq_dest = cpu_rq(cpumask_any(cpu_active_mask));
rq_dest->nr_uninterruptible += rq_src->nr_uninterruptible;
rq_src->nr_uninterruptible = 0;
}
/*
* remove the tasks which were accounted by rq from calc_load_tasks.
*/
static void calc_global_load_remove(struct rq *rq)
{
atomic_long_sub(rq->calc_load_active, &calc_load_tasks);
rq->calc_load_active = 0;
long delta = calc_load_fold_active(rq);
if (delta)
atomic_long_add(delta, &calc_load_tasks);
}
/*
@@ -4832,9 +4822,6 @@ static void migrate_tasks(unsigned int dead_cpu)
*/
rq->stop = NULL;
/* Ensure any throttled groups are reachable by pick_next_task */
unthrottle_offline_cfs_rqs(rq);
for ( ; ; ) {
/*
* There's this thread running, bail when that's the only
@@ -5098,8 +5085,7 @@ migration_call(struct notifier_block *nfb, unsigned long action, void *hcpu)
BUG_ON(rq->nr_running != 1); /* the migration thread */
raw_spin_unlock_irqrestore(&rq->lock, flags);
migrate_nr_uninterruptible(rq);
calc_global_load_remove(rq);
calc_load_migrate(rq);
break;
#endif
}