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Commit 2ddbf952 authored by Hiroshi Shimamoto's avatar Hiroshi Shimamoto Committed by Ingo Molnar
Browse files

sched: clean up sched_fork() 



The adjusting sched_class is a missing part of the already existing "do
not leak PI boosting priority to the child" at the sched_fork(). This
patch moves the adjusting sched_class from wake_up_new_task() to
sched_fork().

this also shrinks the code a bit:

   text    data     bss     dec     hex filename
  40111    4018     292   44421    ad85 sched.o.before
  40102    4018     292   44412    ad7c sched.o.after

Signed-off-by: default avatarHiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: default avatarDmitry Adamushko <dmitry.adamushko@gmail.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
Reviewed-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent 368059a9

kernel/sched.c

+2 −5
Original line number Original line Diff line number Diff line
@@ -1663,6 +1663,8 @@ void sched_fork(struct task_struct *p, int clone_flags) 
	 * Make sure we do not leak PI boosting priority to the child:

	 * Make sure we do not leak PI boosting priority to the child:

	 */

	 */

	p->prio = current->normal_prio;

	p->prio = current->normal_prio;

	if (!rt_prio(p->prio))

		p->sched_class = &fair_sched_class;





#if defined(CONFIG_SCHEDSTATS) || defined(CONFIG_TASK_DELAY_ACCT)

#if defined(CONFIG_SCHEDSTATS) || defined(CONFIG_TASK_DELAY_ACCT)

	if (likely(sched_info_on()))

	if (likely(sched_info_on()))
@@ -1698,11 +1700,6 @@ void fastcall wake_up_new_task(struct task_struct *p, unsigned long clone_flags) 




	p->prio = effective_prio(p);

	p->prio = effective_prio(p);





	if (rt_prio(p->prio))

		p->sched_class = &rt_sched_class;

	else

		p->sched_class = &fair_sched_class;



	if (task_cpu(p) != this_cpu || !p->sched_class->task_new ||

	if (task_cpu(p) != this_cpu || !p->sched_class->task_new ||

							!current->se.on_rq) {

							!current->se.on_rq) {

		activate_task(rq, p, 0);

		activate_task(rq, p, 0);