linux-kernel - Re: [PATCH -mm 2/3] Freezer: Use wait queue instead of busy looping

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Message-Id: <200708021315.18851.rjw@sisk.pl>
Date:	Thu, 2 Aug 2007 13:15:18 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Nigel Cunningham <nigel@...el.suspend2.net>,
	Oleg Nesterov <oleg@...sign.ru>, Pavel Machek <pavel@....cz>,
	pm list <linux-pm@...ts.linux-foundation.org>
Subject: Re: [PATCH -mm 2/3] Freezer: Use wait queue instead of busy looping

On Thursday, 2 August 2007 01:48, Andrew Morton wrote:
> On Wed, 1 Aug 2007 23:32:48 +0200
> "Rafael J. Wysocki" <rjw@...k.pl> wrote:
> 
> > +/*
> > + * Used to notify try_to_freeze_tasks() that the refrigerator has been entered
> > + * by a task.
> > + */
> > +static int refrigerator_called;
> 
> this is rather icky.

Well, the alternative would be to open code something like wait_event_timeout.
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