On Monday 06 September 2010 13:27:13 Jean Pihet wrote: > On Mon, Sep 6, 2010 at 12:42 PM, Thomas Renninger <trenn@xxxxxxx> wrote: ... > In order to reach an efficient low power mode you > need to ensure that all clocks in a clock domain are idled or cut off > (automatically by the HW or with the intervention of SW drivers). > > The HW complexity requires the tracing of all those clocks/power > states, that is why new events are proposed. Hm, but if the HW can switch clocks behind your back, how do you realize that to throw a perf clock power event then? Theoretically you need to poll to keep track of HW switching the clocks? Thomas _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm