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| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2008-01-25 21:08:32 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-01-25 21:08:32 +0100 |
| commit | 1020387f5f3b52929b387103cf976321981f8e26 (patch) | |
| tree | 201f6c44cc09c57dc936cc804971d37178007687 /kernel/sched_rt.c | |
| parent | 37bb6cb4097e29ffee970065b74499cbf10603a3 (diff) | |
| download | lwn-1020387f5f3b52929b387103cf976321981f8e26.tar.gz lwn-1020387f5f3b52929b387103cf976321981f8e26.zip | |
sched: rt-group: reduce rescheduling
Only reschedule if the new group has a higher prio task.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/sched_rt.c')
| -rw-r--r-- | kernel/sched_rt.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/kernel/sched_rt.c b/kernel/sched_rt.c index 8bfdb3f8a52d..f1f215db3bd0 100644 --- a/kernel/sched_rt.c +++ b/kernel/sched_rt.c @@ -94,8 +94,11 @@ static void sched_rt_ratio_enqueue(struct rt_rq *rt_rq) struct sched_rt_entity *rt_se = rt_rq->rt_se; if (rt_se && !on_rt_rq(rt_se) && rt_rq->rt_nr_running) { + struct task_struct *curr = rq_of_rt_rq(rt_rq)->curr; + enqueue_rt_entity(rt_se); - resched_task(rq_of_rt_rq(rt_rq)->curr); + if (rt_rq->highest_prio < curr->prio) + resched_task(curr); } } |