Re: 2.6.21-rc4-mm1

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On Tue, 20 Mar 2007 15:31:02 +0100 Jiri Slaby <jirislaby@xxxxxxxxx> wrote:

> Andrew Morton napsal(a):
> >   http://userweb.kernel.org/~akpm/2.6.21-rc4-mm1/
> 
> I'm getting this while trying to swsusp:
> Stopping tasks ...
> Stopping kernel threads timed out after 20 seconds (1 tasks refusing to freeze):
>  swapper
>  Restarting tasks ... done.
> 
> What to test? Enable PM_DEBUG?

hm, OK.  Rafael has been working on fixing the process freezer and it'll
take some time to get it to where we want it to be, I expect.

Rafael, I think that we could afford to add heaps of debug in there at this
stage to help us track down problems like this.

Also, it might be useful to add a temporary /proc/freeze-unfreeze thing
which will simply do a freeze/unfreeze cycle.  Then we can apply various
workloads to the machine while madly stressing the freezer code.  
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