On Tue, 31 Jan 2012, Shilimkar, Santosh wrote: > A week back I was discussing with Benoit and Tony about having some > infrastructure like "unused clocks" so that we can shutdown those > modules, and if possible some power domains. That way they get > removed at one single place and they the power domain calls > need not iterate over the once which are no longer needed.
Sure, if you have some ideas, that sounds promising. I'd assume the main performance issues would be related to global PRCM register reads, rather than raw CPU cycles. So that's probably where it would make sense to focus the effort. We should also be able to optimize out a fair number of the powerdomain register reads if we cache them in the struct powerdomain. The current powerstate and next powerstate seem to be hit a lot, and those should both be cacheable. Will probably do some of this as part of the functional powerstate code. - Paul -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
