linux-kernel - Re: Time travel experiment?

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Message-ID: <alpine.LFD.1.10.0809101001360.3384@nehalem.linux-foundation.org>
Date:	Wed, 10 Sep 2008 10:02:41 -0700 (PDT)
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Frans Pop <elendil@...net.nl>
cc:	Alan Cox <alan@...rguk.ukuu.org.uk>, linux-kernel@...r.kernel.org,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: Time travel experiment?



On Wed, 10 Sep 2008, Frans Pop wrote:
> 
> But I would not expect the RTC to get changed when the resume is 
> successful. Or does it just get updated with every resume step without a 
> reset to the pre-trace value on completion?

Indeed. We don't know where the bug happens when tracing, so each 
trace-point just writes its hash value into it. And nothing restores it, 
since nothing knows that the resume is "done" (a lot of problems happen 
due to X interactions much later than the 'core' resume thing).

		Linus
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