From 1ba93d42727c44001aa8ccffd39c8ab5705379e2 Mon Sep 17 00:00:00 2001 From: Kirill Tkhai Date: Fri, 12 Sep 2014 17:42:20 +0400 Subject: [PATCH] sched/dl: Simplify pick_dl_task() 1) Nobody calls pick_dl_task() with negative cpu, it's old RT leftover. 2) If p->nr_cpus_allowed is 1, than the affinity has just been changed in set_cpus_allowed_ptr(); we'll pick it just earlier than migration thread. Signed-off-by: Kirill Tkhai Signed-off-by: Peter Zijlstra (Intel) Link: http://lkml.kernel.org/r/1410529340.3569.27.camel@tkhai Signed-off-by: Ingo Molnar --- kernel/sched/deadline.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c index cc4eb89019c1..aaa5abbff2f1 100644 --- a/kernel/sched/deadline.c +++ b/kernel/sched/deadline.c @@ -1121,10 +1121,8 @@ static void set_curr_task_dl(struct rq *rq) static int pick_dl_task(struct rq *rq, struct task_struct *p, int cpu) { if (!task_running(rq, p) && - (cpu < 0 || cpumask_test_cpu(cpu, &p->cpus_allowed)) && - (p->nr_cpus_allowed > 1)) + cpumask_test_cpu(cpu, tsk_cpus_allowed(p))) return 1; - return 0; } -- 2.39.5