On Tue, 12 Oct 2010, Jacob Pan wrote: > > >x86: Sanitize apb timer interrupt handling > > > >Disable the interrupt in CPU_DEAD where it belongs. > My main concern is the performance cost. The power management code for > Moorestown system make use of the cpu hotplug code (disable_nonboot_cpus) > but much more frequently. The system low power states are call S0 idle > state (s0ix). > > Leaving the irq enabled at the chip and desc level between S0ix states > might give some performance benefit. That was my original thought. > Will it cause problems? Errm. I merily moved it to the place where it should be. You do the disable/enable dance already today. Thanks, tglx -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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