linux-kernel - Re: [linux-pm] intermittent suspend problem again

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, 13 Nov 2009 20:59:46 +0100
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Ferenc Wagner <wferi@...f.hu>
Cc:	linux-pm@...ts.linux-foundation.org,
	Jesse Barnes <jbarnes@...tuousgeek.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	yakui.zhao@...el.com, LKML <linux-kernel@...r.kernel.org>,
	ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
	Len Brown <lenb@...nel.org>
Subject: Re: [linux-pm] intermittent suspend problem again

On Friday 13 November 2009, Ferenc Wagner wrote:
> "Rafael J. Wysocki" <rjw@...k.pl> writes:
> 
> > Yes, echo "core" to /sys/power/pm_test before executing s2disk.
> 
> It snapshots the system and returns, producing the same console output
> as s2ram (is this the expected behaviour?)  I ran this several times in
> a loop, and experienced no problems at all.  Maybe it depends on the
> amount of memory used...  I saw a freeze saying "99% done" (ie. not
> 100%), btw.

The number is not always accurate because of rounding errors.  I think we can
safely assume that it always happens after the entire image has been written.

> Are other pm_test values meaningful with s2disk?  Is this
> handled explicitly in s2disk, or does simply the kernel act as if it was
> resumed instead of providing the system image after SNAPSHOT_CREATE_IMAGE?

The latter.

> > On Wednesday 11 November 2009, Ferenc Wagner wrote:
> >
> >> I already did the test for STR (see
> >> http://bugs.freedesktop.org/show_bug.cgi?id=22126#c3), but will redo
> >> with the current kernel tonight.
> >
> > OK, thanks.
> 
> No change on this front, FWIW.  But rc7 is out now, I'll test again.

Not sure if that's going to work, but yes please test it.

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/