On Thu, 24 Feb 2011, Peter Zijlstra wrote: > On Thu, 2011-02-24 at 15:24 -0500, Nicolas Pitre wrote: > > > Most SMP ARM processors are going to use it soon. Powering down idle > > cores provides substantial power saving. > > And why can't regular idle paths be used? CPU hotplug is a massively > expensive operation. The idle path assumes that the CPU state is preserved. We're talking about cores completely going down with power pulled beneath them and eventually rebooted dynamically here. Nicolas -- To unsubscribe from this list: send the line "unsubscribe linux-hotplug" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
