From: "Rafael J. Wysocki" <rjw@sisk.pl>
To: Pavel Machek <pavel@suse.cz>
Subject: Re: [ 15/23] [Suspend2] Helper for counting uninterruptible threads of a type.
Date: Mon, 30 Jan 2006 23:18:28 +0100
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Cc: Nigel Cunningham <nigel@suspend2.net>, linux-kernel@vger.kernel.org
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Hi,

On Thursday 26 January 2006 04:45, Nigel Cunningham wrote:
> 
> Add a helper which counts the number of patches of a type (all
> or userspace only) which are in TASK_UNINTERRUPTIBLE state.
> These tasks are signalled (just in case they leave that state at
> a later point), but we do not consider freezing to have failed
> if and when they do not enter the freezer.
> 
> Note that when they eventually leave TASK_UNINTERRUPTIBLE state,
> they will enter the refrigerator, but will immediately exit if
> we no longer want to freeze at that point.

I think we need to do something like this to prevent problems with
freezing under load.

Greetings,
Rafael
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