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sched: fix sched_fork()

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fix sched_fork(): large latencies at new task creation time because
the ->vruntime was not fixed up cross-CPU, if the parent got migrated
after the child's CPU got set up.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Ingo Molnar 2007-10-15 17:00:11 +02:00
parent b8487b9241
commit 02e4bac2a5
1 changed files with 1 additions and 1 deletions
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kernel/sched.c
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@ -1657,7 +1657,7 @@ void sched_fork(struct task_struct *p, int clone_flags)
#ifdef CONFIG_SMP
cpu = sched_balance_self(cpu, SD_BALANCE_FORK);
#endif
__set_task_cpu(p, cpu);
set_task_cpu(p, cpu);
/*
* Make sure we do not leak PI boosting priority to the child: