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sched: wake-balance fixes

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We have logic to detect whether the system has migratable tasks, but we are
not using it when deciding whether to push tasks away.  So we add support
for considering this new information.

Signed-off-by: Gregory Haskins <ghaskins@novell.com>
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Gregory Haskins
2008-01-25 21:08:12 +01:00
committed by Ingo Molnar
parent 6e1254d2c4
commit a22d7fc187
2 changed files with 10 additions and 2 deletions
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2
kernel/sched.c
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@@ -346,6 +346,7 @@ struct rt_rq {
unsigned long rt_nr_migratory;
/* highest queued rt task prio */
int highest_prio;
int overloaded;
};
/*
@@ -6770,6 +6771,7 @@ void __init sched_init(void)
rq->migration_thread = NULL;
INIT_LIST_HEAD(&rq->migration_queue);
rq->rt.highest_prio = MAX_RT_PRIO;
rq->rt.overloaded = 0;
#endif
atomic_set(&rq->nr_iowait, 0);