Re: [PATCH 1/8] PM: Add suspend block api.

[Rafael J. Wysocki]

On Thursday 20 May 2010, Tejun Heo wrote:
> Hello,
> 
> (sorry about late reply)
> 
> On 04/30/2010 07:26 PM, Oleg Nesterov wrote:
> > Currently _cpu_down() can't flush and/or stop the frozen cwq->thread.
> > 
> > IIRC this is fixable, but needs the nasty complications. We should
> > thaw + stop the frozen cwq->thread, then move the pending works to
> > another CPU.
> 
> Oh, this isn't an issue w/ cmwq.  While frozen all new works are
> collected into per-cpu delayed worklist and while frozen trustee in
> charge of the cpu will keep waiting.  Once thawed, trustee will
> execute all works including the delayed ones unbound to any cpu.

So, does it require any intrusive changes to make it possible to create
multithread freezable workqueues?

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