Re: [linux-pm] [PATCH] Remove process freezer from suspend to RAM pathway

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On Wed, Jul 04, 2007 at 10:38:47AM -0400, Alan Stern wrote:

> Okay, I agree that (1) can be handled without too much effort.  But 
> doing it adds an extra test to _every_ driver's I/O pathway.  Freezing 
> userspace does not incur all this additional overhead.

For runtime PM to work it's already necessary to have a test in that 
path to check if the device is suspended. I can't see how this adds any 
overhead to the common case.

-- 
Matthew Garrett | [email protected]
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