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Commit 02e4bac2 authored by Ingo Molnar's avatar Ingo Molnar
Browse files

sched: fix sched_fork() 



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: default avatarIngo Molnar <mingo@elte.hu>
Signed-off-by: default avatarPeter Zijlstra <a.p.zijlstra@chello.nl>
Reviewed-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent b8487b92

kernel/sched.c

+1 −1
Original line number Diff line number Diff line
@@ -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: