sched: wakeup-buddy tasks are cache-hot

Wakeup-buddy tasks are cache-hot - this makes it a bit harder
for the load-balancer to tear them apart. (but it's still possible,
if the load is sufficiently assymetric)

Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ingo Molnar 2008-03-15 17:10:34 +01:00
parent 4ae7d5cefd
commit f540a6080a

View file

@ -1396,6 +1396,12 @@ task_hot(struct task_struct *p, u64 now, struct sched_domain *sd)
{
s64 delta;
/*
* Buddy candidates are cache hot:
*/
if (&p->se == cfs_rq_of(&p->se)->next)
return 1;
if (p->sched_class != &fair_sched_class)
return 0;