On Tue, Jan 24, 2012 at 10:14:32PM +0100, Linus Walleij wrote:
> From: Chris Blair <chris.bl...@stericsson.com>
> This switches the PL022 worker to a kthread in order to get
> hold of a mechanism to control the message pump priority. On
> low-latency systems elevating the message kthread to realtime
> priority give a real sleek response curve. This has been
> confirmed by measurements. Realtime priority elevation for
> a certain PL022 port can be requested from platform data.

It really feels like we should be pulling this into the core - lots of
drivers use a workqueue to drive data through the system and they're all
going to have exactly the same issue.

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