linux-kernel - Re: [RFD] Automatic suspend

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Fri, 20 Feb 2009 21:49:24 +0100
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Matthew Garrett <mjg59@...f.ucam.org>
Cc:	Pavel Machek <pavel@....cz>,
	Arjan van de Ven <arjan@...radead.org>,
	"Woodruff, Richard" <r-woodruff2@...com>,
	Alan Stern <stern@...land.harvard.edu>,
	Kyle Moffett <kyle@...fetthome.net>,
	Oliver Neukum <oliver@...kum.org>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	pm list <linux-pm@...ts.linux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>,
	"Arve Hj?nnev?g" <arve@...roid.com>,
	Nigel Cunningham <nigel@...el.suspend2.net>,
	mark gross <mgross@...ux.intel.com>,
	Uli Luckas <u.luckas@...d.de>,
	Igor Stoppa <igor.stoppa@...ia.com>,
	Brian Swetland <swetland@...gle.com>,
	Len Brown <lenb@...nel.org>
Subject: Re: [RFD] Automatic suspend

On Friday 20 February 2009, Matthew Garrett wrote:
> On Fri, Feb 20, 2009 at 07:22:15PM +0100, Pavel Machek wrote:
> >  On Mon 2009-02-16 23:23:30, Matthew Garrett wrote:
> > > On Tue, Feb 17, 2009 at 12:19:38AM +0100, Rafael J. Wysocki wrote:
> > > 
> > > > This, again, seems to be a bit x86-centric. :-)  The Android people are telling
> > > > us that on the hardware they deal with it does make sense to put the entire
> > > > system to sleep even for relatively short periods of time, since the latencies
> > > > involved are not too bad.
> > > 
> > > Arve said that the power state was equivalent in idle and suspend, but 
> > 
> > ...for Arve's hardware. Not all embedded systems are like that, and
> > OLPC / PCs are definitely not like that.
> 
> And PCs have enough latency over suspend/resume that we can't do it 
> automatically in a non-intrusive manner anyway, so runtime pm is more 
> interesting there as well.

Agreed.

Thanks,
Rafael
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/