Messages in this thread Patch in this message |  | | | From | Gregory Haskins <> | | Subject | [PATCH 1/5] RT - fix for scheduling issue | | Date | Tue, 09 Oct 2007 10:25:49 -0400 |
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From: Mike Kravetz <kravetz@us.ibm.com>
RESCHED_IPIs can be missed if more than one RT task is awoken simultaneously
Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Gregory Haskins <ghaskins@novell.com> --- kernel/sched.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/kernel/sched.c b/kernel/sched.c index 93fd6de..3e75c62 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -2207,7 +2207,7 @@ static inline void finish_task_switch(struct rq *rq, struct task_struct *prev) * If we pushed an RT task off the runqueue, * then kick other CPUs, they might run it: */ - if (unlikely(rt_task(current) && prev->se.on_rq && rt_task(prev))) { + if (unlikely(rt_task(current) && rq->rt_nr_running > 1)) { schedstat_inc(rq, rto_schedule); smp_send_reschedule_allbutself_cpumask(current->cpus_allowed); } - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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