>From 9f241c37bb7316eeea56e6c93541352cf5c9b8a8 Mon Sep 17 00:00:00 2001 From: Morten Rasmussen Date: Fri, 12 Oct 2012 15:25:02 +0100 Subject: [PATCH] sched: Only down migrate low priority tasks if allowed by affinity mask Adds an extra check intersection of the task affinity mask and the slower hmp_domain cpumask before down migrating low priority tasks. Signed-off-by: Morten Rasmussen --- kernel/sched/fair.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 56cbda1..edcf922 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -5562,8 +5562,11 @@ static unsigned int hmp_down_migration(int cpu, struct sched_entity *se) #ifdef CONFIG_SCHED_HMP_PRIO_FILTER /* Filter by task priority */ - if (p->prio >= hmp_up_prio) + if ((p->prio >= hmp_up_prio) && + cpumask_intersects(&hmp_slower_domain(cpu)->cpus, + tsk_cpus_allowed(p))) { return 1; + } #endif /* Let the task load settle before doing another down migration */ -- 1.7.9.5