Commit 44142fac authored Oct 15, 2007 by Ingo Molnar

sched: fix sysctl_sched_child_runs_first flag



fix the sched_child_runs_first flag: always call into ->task_new()
if we are on the same CPU, as SCHED_OTHER tasks depend on it for
correct initial setup.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Mike Galbraith <efault@gmx.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>

parent 23fd5045

kernel/sched.c

+2 −4

Original line number	Diff line number	Diff line
		@@ -1688,10 +1688,8 @@ void fastcall wake_up_new_task(struct task_struct *p, unsigned long clone_flags)
		else
		p->sched_class = &fair_sched_class;

		if (!p->sched_class->task_new \|\| !sysctl_sched_child_runs_first \|\|
		(clone_flags & CLONE_VM) \|\| task_cpu(p) != this_cpu \|\|
		if (task_cpu(p) != this_cpu \|\| !p->sched_class->task_new \|\|
		!current->se.on_rq) {

		activate_task(rq, p, 0);
		} else {
		/*