From: "Rafael J. Wysocki" <rjw@sisk.pl>
To: Mike Travis <travis@sgi.com>
Subject: Re: 2.6.29-rc1: thinkpad problems during resume
Date: Sat, 17 Jan 2009 01:13:09 +0100
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Cc: Pavel Machek <pavel@suse.cz>, Jeff Chua <jeff.chua.linux@gmail.com>,
       kernel list <linux-kernel@vger.kernel.org>,
       "H. Peter Anvin" <hpa@zytor.com>
References: <20090113081316.GA2292@elf.ucw.cz> <200901162306.11853.rjw@sisk.pl> <49711EBC.5050101@sgi.com>
In-Reply-To: <49711EBC.5050101@sgi.com>
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On Saturday 17 January 2009, Mike Travis wrote:
> Rafael J. Wysocki wrote:
> > On Friday 16 January 2009, Pavel Machek wrote:
> >> On Tue 2009-01-13 23:21:17, Jeff Chua wrote:
> >>> On Tue, Jan 13, 2009 at 10:36 PM, Pavel Machek <pavel@suse.cz> wrote:
> >>>> resumes fine with CONFIG_SMP unset.
> >>> On my X60s, I had problem with s2ram, and I switch to the following ...
> >>>
> >>> echo mem > /sys/power/state
> >>>
> >>> Try and see if it works for you.
> >> I tried that; unlike s2ram, this actually produces some oopses that
> >> can be viewed. Unfortunately, they scroll a bit too fast.
> >>
> >> cpu hotplug vs. cpufreq seems to be responsible in my case, looking at
> >> the logs from "echo 1 > online".
> > 
> > There are three patches from Mike Travis that can help:
> > http://lkml.org/lkml/2009/1/16/377
> > 
> > Thanks,
> > Rafael
> 
> Note that these don't really fix anything, just replaces the current
> method of using set_cpus_allowed with the work_on_cpu call.  If
> the laptop worked before the [bad] patch, then it should work again
> now with this one.

Thanks for the clarification, I misread the changelogs.

OK, so we still have a cpufreq vs CPU hotplug problem, it seems.  I can't
reproduce it myself, though.

Thanks,
Rafael
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