From 58e2d4ca581167c2a079f4ee02be2f0bc52e8729 Mon Sep 17 00:00:00 2001 From: Srivatsa Vaddagiri Date: Fri, 25 Jan 2008 21:08:00 +0100 Subject: sched: group scheduling, change how cpu load is calculated This patch changes how the cpu load exerted by fair_sched_class tasks is calculated. Load exerted by fair_sched_class tasks on a cpu is now a summation of the group weights, rather than summation of task weights. Weight exerted by a group on a cpu is dependent on the shares allocated to it. This version of patch has a minor impact on code size, but should have no runtime/functional impact for !CONFIG_FAIR_GROUP_SCHED. Signed-off-by: Srivatsa Vaddagiri Signed-off-by: Ingo Molnar --- kernel/sched_rt.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'kernel/sched_rt.c') diff --git a/kernel/sched_rt.c b/kernel/sched_rt.c index 9ba3daa03475..cefcd5105146 100644 --- a/kernel/sched_rt.c +++ b/kernel/sched_rt.c @@ -32,6 +32,7 @@ static void enqueue_task_rt(struct rq *rq, struct task_struct *p, int wakeup) list_add_tail(&p->run_list, array->queue + p->prio); __set_bit(p->prio, array->bitmap); + inc_cpu_load(rq, p->se.load.weight); } /* @@ -46,6 +47,7 @@ static void dequeue_task_rt(struct rq *rq, struct task_struct *p, int sleep) list_del(&p->run_list); if (list_empty(array->queue + p->prio)) __clear_bit(p->prio, array->bitmap); + dec_cpu_load(rq, p->se.load.weight); } /* -- cgit v1.2.3-59-g8ed1b