Commit ff56b2f0 authored by Peter Zijlstra's avatar Peter Zijlstra Committed by Ingo Molnar

sched: activate task_hot() only on fair-scheduled tasks

activate task_hot() only for fair-scheduled tasks (i.e. disable it
for RT tasks).
Signed-off-by: default avatarPeter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent da84d961
......@@ -2122,11 +2122,16 @@ static void pull_task(struct rq *src_rq, struct task_struct *p,
* Is this task likely cache-hot:
*/
static inline int
task_hot(struct task_struct *p, unsigned long long now, struct sched_domain *sd)
task_hot(struct task_struct *p, u64 now, struct sched_domain *sd)
{
s64 delta = now - p->se.exec_start;
s64 delta;
return delta < (long long)sysctl_sched_migration_cost;
if (p->sched_class != &fair_sched_class)
return 0;
delta = now - p->se.exec_start;
return delta < (s64)sysctl_sched_migration_cost;
}
/*
......
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