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| author |   David S. Miller <davem@davemloft.net> | 2017-12-16 22:11:55 -0500 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-12-16 22:11:55 -0500 |
| commit | c30abd5e40dd863f88e26be09b6ce949145a630a (patch) | |
| tree | 5b25362084308502a336d8da26b8dc7430d7c812 /kernel/sched/rt.c | |
| parent | net: phy: broadcom: Add entry for 5395 switch PHYs (diff) | |
| parent | Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma (diff) | |
| download | wireguard-linux-c30abd5e40dd863f88e26be09b6ce949145a630a.tar.xz wireguard-linux-c30abd5e40dd863f88e26be09b6ce949145a630a.zip | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Three sets of overlapping changes, two in the packet scheduler
and one in the meson-gxl PHY driver.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'kernel/sched/rt.c')
| -rw-r--r-- | kernel/sched/rt.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/kernel/sched/rt.c b/kernel/sched/rt.c index 4056c19ca3f0..665ace2fc558 100644 --- a/kernel/sched/rt.c +++ b/kernel/sched/rt.c @@ -2034,8 +2034,9 @@ static void pull_rt_task(struct rq *this_rq) bool resched = false; struct task_struct *p; struct rq *src_rq; + int rt_overload_count = rt_overloaded(this_rq); - if (likely(!rt_overloaded(this_rq))) + if (likely(!rt_overload_count)) return; /* @@ -2044,6 +2045,11 @@ static void pull_rt_task(struct rq *this_rq) */ smp_rmb(); + /* If we are the only overloaded CPU do nothing */ + if (rt_overload_count == 1 && + cpumask_test_cpu(this_rq->cpu, this_rq->rd->rto_mask)) + return; + #ifdef HAVE_RT_PUSH_IPI if (sched_feat(RT_PUSH_IPI)) { tell_cpu_to_push(this_rq); |