Messages in this thread | | | From | "Rafael J. Wysocki" <> | Subject | Re: [ 00/23] [Suspend2] Freezer Upgrade Patches | Date | Fri, 27 Jan 2006 13:18:01 +0100 |
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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
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