diff options
Diffstat (limited to 'sys/kern/sched_ule.c')
| -rw-r--r-- | sys/kern/sched_ule.c | 34 |
1 files changed, 23 insertions, 11 deletions
diff --git a/sys/kern/sched_ule.c b/sys/kern/sched_ule.c index 68a4522..5ddd415 100644 --- a/sys/kern/sched_ule.c +++ b/sys/kern/sched_ule.c @@ -700,31 +700,43 @@ steal: static void tdq_notify(struct td_sched *ts) { - struct thread *td; + struct thread *ctd; struct pcpu *pcpu; - int prio; + int cpri; + int pri; int cpu; - prio = ts->ts_thread->td_priority; cpu = ts->ts_cpu; + pri = ts->ts_thread->td_priority; pcpu = pcpu_find(cpu); - td = pcpu->pc_curthread; + ctd = pcpu->pc_curthread; + cpri = ctd->td_priority; /* * If our priority is not better than the current priority there is * nothing to do. */ - if (prio > td->td_priority) + if (pri > cpri) return; - /* Always set NEEDRESCHED. */ - td->td_flags |= TDF_NEEDRESCHED; /* - * IPI if we exceed the threshold or if the target cpu is running an - * idle thread. + * Always IPI idle. + */ + if (cpri > PRI_MIN_IDLE) + goto sendipi; + /* + * If we're realtime or better and there is timeshare or worse running + * send an IPI. + */ + if (pri < PRI_MAX_REALTIME && cpri > PRI_MAX_REALTIME) + goto sendipi; + /* + * Otherwise only IPI if we exceed the threshold. */ - if (prio > ipi_thresh && td->td_priority < PRI_MIN_IDLE) + if (pri > ipi_thresh) return; - if (td->td_priority < PRI_MIN_IDLE) { +sendipi: + ctd->td_flags |= TDF_NEEDRESCHED; + if (cpri < PRI_MIN_IDLE) { if (ipi_ast) ipi_selected(1 << cpu, IPI_AST); else if (ipi_preempt) |
