linux-kernel - Re: [RFC PATCH(Experimental) 1/4] freezer-cpu-hotplug core

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Message-Id: <200702161206.40483.rjw@sisk.pl>
Date:	Fri, 16 Feb 2007 12:06:39 +0100
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	vatsa@...ibm.com
Cc:	Oleg Nesterov <oleg@...sign.ru>, Gautham R Shenoy <ego@...ibm.com>,
	akpm@...l.org, paulmck@...ibm.com, mingo@...e.hu,
	dipankar@...ibm.com, venkatesh.pallipadi@...el.com,
	linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH(Experimental) 1/4] freezer-cpu-hotplug core

On Friday, 16 February 2007 10:59, Srivatsa Vaddagiri wrote:
> On Fri, Feb 16, 2007 at 10:29:20AM +0100, Rafael J. Wysocki wrote:
> > Well, the suspend code has been developed with the assumption that frozen
> > threads stay frozen until _we_ let them thaw by calling thaw_processes().  I'm
> > a bit afraid of this change.
> 
> Note that only kernel threads created thr' kthread_create are allowed
> to exit like this from the refrigerator, that too only when
> (kthread_stop_info.k == current). So all other threads should be unaffected
> because of this change.

Yes, that's why I said "a bit". ;-)
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