linux-kernel - Re: [tip:sched/urgent] sched: Hide runqueues from direct refer at source code level

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Date:	Wed, 17 Jun 2009 18:31:11 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	mingo@...hat.com, hpa@...or.com, linux-kernel@...r.kernel.org,
	mitake@....info.waseda.ac.jp, tglx@...utronix.de
Cc:	linux-tip-commits@...r.kernel.org
Subject: Re: [tip:sched/urgent] sched: Hide runqueues from direct refer at
	source code level


* tip-bot for Hitoshi Mitake <mitake@....info.waseda.ac.jp> wrote:

> --- a/kernel/sched.c
> +++ b/kernel/sched.c
> @@ -6630,7 +6630,7 @@ EXPORT_SYMBOL(yield);
>   */
>  void __sched io_schedule(void)
>  {
> -	struct rq *rq = &__raw_get_cpu_var(runqueues);
> +	struct rq *rq = this_rq();
>  
>  	delayacct_blkio_start();
>  	atomic_inc(&rq->nr_iowait);
> @@ -6642,7 +6642,7 @@ EXPORT_SYMBOL(io_schedule);
>  
>  long __sched io_schedule_timeout(long timeout)
>  {
> -	struct rq *rq = &__raw_get_cpu_var(runqueues);
> +	struct rq *rq = this_rq();
>  	long ret;

I removed these two changes. Did you notice the __raw prefix?

	Ingo
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