Re: [PATCH -mm 2/2]: PM: SMP-safe freezer

["Rafael J. Wysocki" <rjw@sisk.pl>]

On Monday, 4 December 2006 11:30, Pavel Machek wrote:
> Hi!
> 
> > To solve first of these problems we need to stop using PF_FROZEN to tell
> > tasks that they should go to the refrigerator.  Instead, we can introduce
> > a special TIF_*** flag and use it for this purpose, since it is allowed to
> > change the other tasks' TIF_*** flags and there are special calls for it.
> > 
> > To avoid the freeze_process()-refrigerator() race we can make freeze_process()
> > to always check the task's PF_FROZEN flag after it's read its "freeze" flag.
> > We should also make sure that refrigerator() will always reset the task's
> > "freeze" flag after it's set PF_FROZEN for it.
> > 
> > Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
> 
> ACK.

But I think I'll need to add TIF_FROZEN for all architectures, because suspend
to RAM is supposed to work on all of them, isn't it?

Also, this patch is only sufficient with [1/2] or an alternative solution?

Greetings,
Rafael


-- 
You never change things by fighting the existing reality.
		R. Buckminster Fuller

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