Re: Freezeable workqueues [Was: 2.6.22-rc1: Broken suspend on SMP with tifm]

[Rafael J. Wysocki]

On Tuesday, 15 May 2007 02:56, Alex Dubov wrote:
> > 
> > > > 	- Do we need freezeable workqueues ?
> > > 
> > > Well, we have at least one case in which they appear to be useful.
> > 
> 
> I need freezeable wq exactly for the fact that they are synchronized with suspend/resume. My
> workitem may do device_register/unregister and it can (and will be) scheduled from irq handler
> during resume. As far as I understand, before freezeable wqs, kthreads were the only way to
> achieve this behavior,

That's correct.

> which is less convenient.

Thanks for the explanation. 

Greetings,
Rafael
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