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On Mon, May 30, 2005 at 04:50:27PM +0000, Zwane Mwaikambo wrote: > Yes, older 2.6-mm kernel (2.6.10-mm) trees have the "toy" i386 hotplug > cpu implementation which does what you want. AFAIK in the i386 "toy" implementation, when a CPU is offlined, it stops taking interrupts and stops running tasks, but it _still_ executes a while loop in the context of its idle task (with IRQs disabled). The loop is exited when we have to bring online the CPU again. What this means is I don't think by offlining the CPU, we are removing any activity associated with the corresponding h/w thread. Maybe the toy implementation could be modified to take care of it? Something like lowering the priority of the h/w thread so that it consumes minimal CPU resources to execute its while loop. -- Thanks and Regards, Srivatsa Vaddagiri, Linux Technology Center, IBM Software Labs, Bangalore, INDIA - 560017 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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