From 8465e792e82c567b80358e38732164b770ed4b7f Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Mon, 15 Oct 2007 17:00:11 +0200 Subject: sched: entity_key() fix entity_key() fix - we'd occasionally end up with a 0 vruntime in the !initial case. Signed-off-by: Ingo Molnar Signed-off-by: Peter Zijlstra --- kernel/sched_fair.c | 17 ++++++++++------- 1 file changed, 10 insertions(+), 7 deletions(-) diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c index 8ea4c9b3e411..926491f7f803 100644 --- a/kernel/sched_fair.c +++ b/kernel/sched_fair.c @@ -479,13 +479,16 @@ place_entity(struct cfs_rq *cfs_rq, struct sched_entity *se, int initial) if (initial && sched_feat(START_DEBIT)) vruntime += __sched_vslice(cfs_rq->nr_running + 1); - if (!initial && sched_feat(NEW_FAIR_SLEEPERS)) { - s64 latency = cfs_rq->min_vruntime - se->last_min_vruntime; - if (latency < 0 || !cfs_rq->nr_running) - latency = 0; - else - latency = min_t(s64, latency, sysctl_sched_latency); - vruntime -= latency; + if (!initial) { + if (sched_feat(NEW_FAIR_SLEEPERS)) { + s64 latency = cfs_rq->min_vruntime - se->last_min_vruntime; + if (latency < 0 || !cfs_rq->nr_running) + latency = 0; + else + latency = min_t(s64, latency, sysctl_sched_latency); + vruntime -= latency; + } + vruntime = max(vruntime, se->vruntime); } se->vruntime = vruntime; -- cgit v1.2.2