linux-kernel - Re: [PATCH] sched: wakeup buddy

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Date:	Thu, 07 Mar 2013 18:21:57 +0100
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Michael Wang <wangyun@...ux.vnet.ibm.com>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...nel.org>, Mike Galbraith <efault@....de>,
	Namhyung Kim <namhyung@...nel.org>,
	Alex Shi <alex.shi@...el.com>, Paul Turner <pjt@...gle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"Nikunj A. Dadhania" <nikunj@...ux.vnet.ibm.com>,
	Ram Pai <linuxram@...ibm.com>
Subject: Re: [PATCH] sched: wakeup buddy

On Wed, 2013-03-06 at 15:06 +0800, Michael Wang wrote:
> +static inline int wakeup_related(struct task_struct *p)
> +{
> +       if (wakeup_buddy(p, current)) {
> +               /*
> +                * Now check whether current still focus on his buddy.
> +                */
> +               if (wakeup_buddy(current, p))
> +                       return 1;
> +       }
> +
> +       return 0;
> +}

Not commenting on the thing in general, but:

static inline bool wakeup_related(struct task_struct *p)
{
	return wakeup_buddy(p, current) && wakeup_buddy(current, p);
}

is far shorter and easier to read :-)

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