linux-kernel - Re: pcmcia resume 60 second hang. Re: [patch 00/69] -stable review

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Message-Id: <200705272032.15971.rjw@sisk.pl>
Date:	Sun, 27 May 2007 20:32:14 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Matthew Garrett <mjg59@...f.ucam.org>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Pavel Machek <pavel@....cz>,
	Romano Giannetti <romanol@...omillas.es>,
	Chris Wright <chrisw@...s-sol.org>,
	Chuck Ebbert <cebbert@...hat.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	stable@...nel.org, Justin Forbes <jmforbes@...uxtx.org>,
	Zwane Mwaikambo <zwane@....linux.org.uk>,
	Theodore Ts'o <tytso@....edu>,
	Randy Dunlap <rdunlap@...otime.net>,
	Dave Jones <davej@...hat.com>,
	Chuck Wolber <chuckw@...ntumlinux.com>,
	Chris Wedgwood <reviews@...cw.f00f.org>,
	Michael Krufky <mkrufky@...uxtv.org>,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk
Subject: Re: pcmcia resume 60 second hang. Re: [patch 00/69] -stable review

On Sunday, 27 May 2007 18:43, Matthew Garrett wrote:
> On Sun, May 27, 2007 at 09:26:00AM -0700, Linus Torvalds wrote:
> 
> > And by "disabling the freezer", I think we should just not call it at all. 
> > However, sadly, right now it's called from common code. I'll happily take 
> > a tested patch to split that code sequence up, and try to do it in 2.6.23, 
> > if somebody has the energy (I'm getting to the point where I may just do 
> > it myself, but my lazy nature still hopes for a STR person to step 
> > forward).
> 
> I'll take a look at this. It probably makes sense to build on Rafael's 
> work on splitting the codepaths up.

Actaully, removing the freezer from the suspend code path is simple.  You only
need to remove calls to freeze_processes() and thaw_processes() from
kernel/power/main.c .

That said, I don't think that PPC does what you say only.  We've discussed this
a bit on linux-pm, in this thread:

https://lists.linux-foundation.org/pipermail/linux-pm/2007-May/012242.html

In particular, please see this message:

https://lists.linux-foundation.org/pipermail/linux-pm/2007-May/012301.html

Greetings,
Rafael
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