linux-kernel - Re: [PATCH]: In kernel hibernation, suspend to both

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Message-ID: <20120616230706.GA26955@liondog.tnic>
Date:	Sun, 17 Jun 2012 01:07:06 +0200
From:	Borislav Petkov <bp@...en8.de>
To:	Alan Stern <stern@...land.harvard.edu>
Cc:	Bojan Smojver <bojan@...ursive.com>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	"Srivatsa S. Bhat" <srivatsa.bhat@...ux.vnet.ibm.com>,
	Linux PM list <linux-pm@...r.kernel.org>,
	Kernel development list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH]: In kernel hibernation, suspend to both

On Sat, Jun 16, 2012 at 04:19:18PM -0400, Alan Stern wrote:
> On Sun, 17 Jun 2012, Bojan Smojver wrote:
> 
> > "Rafael J. Wysocki" <rjw@...k.pl> wrote:
> > 
> > >Hmm.  Is there any fix, though?
> > 
> > How do we tell printk() to not dump stuff into dmesg?
> 
> You can't; that's what printk() does, by definition.  If you don't want 
> stuff to go into the dmesg buffer then don't call printk().
> 
> >  Or, how do we
> > otherwise just print to the console?
> 
> That's a better question.  Unfortunately, I don't know the answer.

Ok, I don't know the hibernation code at all but let me give it a try:

how about teach the piece that parses

$ echo suspend > /sys/power/disk

to make a note to self that we're doing the hibrid hibernation method
and then the function that prints the progress indicator to be let known
of the aforementioned self-note so that it doesn't do any output?

Purely hypothetical, of course.

-- 
Regards/Gruss,
    Boris.
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