Messages in this thread | | | Date | Wed, 4 Jul 2007 15:58:18 +0100 | From | Matthew Garrett <> | Subject | 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 | mjg59@srcf.ucam.org - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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