| From | Alex Shi <> | Subject | [PATCH v3 06/22] sched: load tracking bug fix | Date | Sat, 5 Jan 2013 16:37:35 +0800 |
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We need initialize the se.avg.{decay_count, load_avg_contrib} to zero after a new task forked. Otherwise random values of above variable cause mess when do new task enqueue: enqueue_task_fair enqueue_entity enqueue_entity_load_avg
Signed-off-by: Alex Shi <alex.shi@intel.com> --- kernel/sched/core.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 257002c..66c1718 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -1558,6 +1558,8 @@ static void __sched_fork(struct task_struct *p) #if defined(CONFIG_SMP) && defined(CONFIG_FAIR_GROUP_SCHED) p->se.avg.runnable_avg_period = 0; p->se.avg.runnable_avg_sum = 0; + p->se.avg.decay_count = 0; + p->se.avg.load_avg_contrib = 0; #endif #ifdef CONFIG_SCHEDSTATS memset(&p->se.statistics, 0, sizeof(p->se.statistics)); -- 1.7.12
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