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| author |   Ingo Molnar <mingo@elte.hu> | 2007-11-09 22:39:39 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2007-11-09 22:39:39 +0100 |
| commit | 8bc6767acb3236e0345e99cf198168e60e7ae456 (patch) | |
| tree | be9119dfaf3751ca49536bd569a0fc617daabda3 | |
| parent | sched: remove PREEMPT_RESTRICT (diff) | |
| download | linux-dev-8bc6767acb3236e0345e99cf198168e60e7ae456.tar.xz linux-dev-8bc6767acb3236e0345e99cf198168e60e7ae456.zip | |
sched: wakeup preemption fix
wakeup preemption fix: do not make it dependent on p->prio.
Preemption purely depends on ->vruntime.
This improves preemption in mixed-nice-level workloads.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
| -rw-r--r-- | kernel/sched_fair.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c index fbcb426029d0..a3badf52bba2 100644 --- a/kernel/sched_fair.c +++ b/kernel/sched_fair.c @@ -863,10 +863,8 @@ static void check_preempt_wakeup(struct rq *rq, struct task_struct *p) if (unlikely(se->load.weight != NICE_0_LOAD)) gran = calc_delta_fair(gran, &se->load); - if (delta > gran) { - if (p->prio < curr->prio) - resched_task(curr); - } + if (delta > gran) + resched_task(curr); } } |