From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: linuxppc-dev list <linuxppc-dev@ozlabs.org>,
Johannes Berg <johannes@sipsolutions.net>,
linux-pm <linux-pm@lists.osdl.org>, ralf <ralf@linux-mips.org>
Subject: Re: apm_emulation regression
Date: Fri, 14 Dec 2007 11:05:12 +1100 [thread overview]
Message-ID: <1197590712.15741.197.camel@pasglop> (raw)
In-Reply-To: <1197590675.15741.195.camel@pasglop>
On Fri, 2007-12-14 at 11:04 +1100, Benjamin Herrenschmidt wrote:
> On Fri, 2007-12-14 at 01:10 +0100, Rafael J. Wysocki wrote:
> >
> > Hmm.
> >
> > I'm not that familiar with the APM emulation code, but the description
> > of the
> > problem above suggests that the APM emulation can install a suspend
> > notifier for this purpose.
>
> It can use the new notifier that happens before freezing yes. Johannes,
> I think that's pretty much what my old powermac implementation did
> (using my private notifier scheme I had there), might be worth reviving
> that bit and sticking it into the generic apm_emu ...
Note that you may want to improve on it with a timeout in case userspace
doesn't ack...
Ben.
next prev parent reply other threads:[~2007-12-14 0:05 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-12 2:45 apm_emulation regression Benjamin Herrenschmidt
2007-12-12 18:03 ` Johannes Berg
2007-12-12 18:03 ` Johannes Berg
2007-12-13 11:40 ` Johannes Berg
2007-12-13 11:40 ` Johannes Berg
2007-12-13 20:31 ` Benjamin Herrenschmidt
2007-12-14 0:10 ` Rafael J. Wysocki
2007-12-14 0:04 ` Benjamin Herrenschmidt
2007-12-14 0:05 ` Benjamin Herrenschmidt [this message]
2007-12-14 12:18 ` Johannes Berg
2007-12-14 12:18 ` Johannes Berg
2007-12-15 0:20 ` Rafael J. Wysocki
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