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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2009-09-01 10:34:37 +0200
committerIngo Molnar <mingo@elte.hu>2009-09-04 10:09:55 +0200
commite9e9250bc78e7f6342517214c0178a529807964b (patch)
tree9466a437ccfa93b200f4ee434fe807dd6b5fc050 /kernel/sched_rt.c
parentab29230e673c646292c90c8b9d378b9562145af0 (diff)
sched: Scale down cpu_power due to RT tasks
Keep an average on the amount of time spend on RT tasks and use that fraction to scale down the cpu_power for regular tasks. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Tested-by: Andreas Herrmann <andreas.herrmann3@amd.com> Acked-by: Andreas Herrmann <andreas.herrmann3@amd.com> Acked-by: Gautham R Shenoy <ego@in.ibm.com> Cc: Balbir Singh <balbir@in.ibm.com> LKML-Reference: <20090901083826.287778431@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/sched_rt.c')
-rw-r--r--kernel/sched_rt.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/kernel/sched_rt.c b/kernel/sched_rt.c
index 3d4020a9ba1b..2eb4bd6a526c 100644
--- a/kernel/sched_rt.c
+++ b/kernel/sched_rt.c
@@ -615,6 +615,8 @@ static void update_curr_rt(struct rq *rq)
curr->se.exec_start = rq->clock;
cpuacct_charge(curr, delta_exec);
+ sched_rt_avg_update(rq, delta_exec);
+
if (!rt_bandwidth_enabled())
return;
@@ -887,8 +889,6 @@ static void enqueue_task_rt(struct rq *rq, struct task_struct *p, int wakeup)
if (!task_current(rq, p) && p->rt.nr_cpus_allowed > 1)
enqueue_pushable_task(rq, p);
-
- inc_cpu_load(rq, p->se.load.weight);
}
static void dequeue_task_rt(struct rq *rq, struct task_struct *p, int sleep)
@@ -899,8 +899,6 @@ static void dequeue_task_rt(struct rq *rq, struct task_struct *p, int sleep)
dequeue_rt_entity(rt_se);
dequeue_pushable_task(rq, p);
-
- dec_cpu_load(rq, p->se.load.weight);
}
/*