lkml.org 
[lkml]   [2006]   [Jan]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: [ 00/23] [Suspend2] Freezer Upgrade Patches
Date
Hi,

On Friday, 27 January 2006 05:04, Nigel Cunningham wrote:
> On Friday 27 January 2006 09:10, Rafael J. Wysocki wrote:
> > On Thursday, 26 January 2006 04:45, Nigel Cunningham wrote:
> > > Hi everyone.
> > >
> > > This set of patches represents the freezer upgrade patches from Suspend2.
> > >
> > > The key features of this changeset are:
> > >
> > > - Use of Christoph Lameter's todo list notifiers, which help with SMP
> > > cleanness.
> > > - Splitting the freezing of kernel and userspace processes. Freezing
> > > currently suffers from a race because userspace processes can be
> > > submitting work for kernel threads, thereby stopping them from
> > > responding to freeze messages in a timely manner. The freezer can
> > > thus give up when it doesn't really need to. (This is not normally
> > > a problem only because load is not usually high).
> >
> > Could you please describe specific situation?
>
> The simplest example would be:
>
> dd if=/dev/hda of=/dev/null
> echo disk > /sys/power/state

Well, I don't think it's a usual kind of workload. :-)

Anyway, could you please give some details? I mean how exactly your patch
helps in this particular case?

Greetings,
Rafael

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

\
 
 \ /
  Last update: 2006-01-27 13:19    [W:0.605 / U:0.108 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site