Re: [PATCH 1/3] sched: fix cgroup movement of newly created process

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On Tue, 2011-12-13 at 15:57 +0900, Daisuke Nishimura wrote:

>  kernel/sched_fair.c |    4 ++--
>  1 files changed, 2 insertions(+), 2 deletions(-)

you blink you loose, that file doesn't exist anymore.


> diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
> index 5c9e679..df145a9 100644
> --- a/kernel/sched_fair.c
> +++ b/kernel/sched_fair.c
> @@ -4922,10 +4922,10 @@ static void task_move_group_fair(struct task_struct *p, int on_rq)
>  	 * to another cgroup's rq. This does somewhat interfere with the
>  	 * fair sleeper stuff for the first placement, but who cares.
>  	 */
> -	if (!on_rq)
> +	if (!on_rq && p->state != TASK_RUNNING)
>  		p->se.vruntime -= cfs_rq_of(&p->se)->min_vruntime;
>  	set_task_rq(p, task_cpu(p));
> -	if (!on_rq)
> +	if (!on_rq && p->state != TASK_RUNNING)
>  		p->se.vruntime += cfs_rq_of(&p->se)->min_vruntime;
>  }
>  #endif

The much saner way of writing that is something like:

 /*
  * Comment explaining stuff..
  */
 if (!on_rq && p->state == TASK_RUNNING)
	on_rq = 1;

 ...


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