From 4a6184ce7a48c478dee0d8a9ed74c1fa35161858 Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Thu, 6 Oct 2011 22:39:14 +0200 Subject: sched, rt: Provide means of disabling cross-cpu bandwidth sharing Normally the RT bandwidth scheme will share bandwidth across the entire root_domain. However sometimes its convenient to disable this sharing for debug purposes. Provide a simple feature switch to this end. Signed-off-by: Peter Zijlstra Signed-off-by: Ingo Molnar --- kernel/sched_rt.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'kernel/sched_rt.c') diff --git a/kernel/sched_rt.c b/kernel/sched_rt.c index 056cbd2e2a27..583a1368afe6 100644 --- a/kernel/sched_rt.c +++ b/kernel/sched_rt.c @@ -560,6 +560,9 @@ static int balance_runtime(struct rt_rq *rt_rq) { int more = 0; + if (!sched_feat(RT_RUNTIME_SHARE)) + return more; + if (rt_rq->rt_time > rt_rq->rt_runtime) { raw_spin_unlock(&rt_rq->rt_runtime_lock); more = do_balance_runtime(rt_rq); -- cgit v1.2.3-59-g8ed1b