linux-kernel - Re: [Bug #13306] hibernate slow on _second

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]

Message-Id: <1244062874.22576.4.camel@johannes.local>
Date:	Wed, 03 Jun 2009 23:01:14 +0200
From:	Johannes Berg <johannes@...solutions.net>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Kernel Testers List <kernel-testers@...r.kernel.org>
Subject: Re: [Bug #13306] hibernate slow on _second_ run

On Wed, 2009-06-03 at 11:16 +0200, Rafael J. Wysocki wrote:
> On Wednesday 03 June 2009, Johannes Berg wrote:
> > On Mon, 2009-06-01 at 22:48 +0200, Rafael J. Wysocki wrote:
> > > > No, it's now hanging 20 seconds much later, after returning to
> > > > userspace :( But the dmesg log still has a hang of ~20.5 seconds just
> > > > like before, between two kernel messages...
> > > 
> > > Hmm.  Can you try to comment out suspend_device_irqs() and resume_device_irqs()
> > > in drivers/base/power/main.c and see what happens?
> > 
> > Oddly, that does seem to help. I'm sure it can't be a solution though :)
> 
> Not really. ;-)
> 
> Still, something like the (untested) patch below can be.  Can you please give
> it a try?

Seems to work, though I'm not sure yet whether it really helps, that
needs some more verification, will let you know tomorrow.

johannes

Download attachment "signature.asc" of type "application/pgp-signature" (802 bytes)