On Sat, Feb 11, 2012 at 6:03 PM, Russell King - ARM Linux <linux@xxxxxxxxxxxxxxxx> wrote: > On Sat, Feb 11, 2012 at 04:31:25PM +0800, Ming Lei wrote: >> With 32K gp timer, tick can be driven and system can run well, so >> allow MPU local timer to be disabled if someone requires it, otherwise >> MPU local timer is always chosen as the default clock_event_device. > > The point being? IMO, 32K gp timer may be more energy-saving than MPU local timer because gp timer has much less clock frequency and only half interrupts generated in tick mode compared with mpu local timer. > > What if you want to use NO_HZ? 32K gp timer supports oneshot mode, so it should support NO_HZ. In my test .config, NO_HZ is enabled and system can run well. thanks, -- Ming Lei -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
