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

[Matthew Garrett]

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 | mjg59@xxxxxxxxxxxxx
-
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/