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Doesn't apply to -mm5 because someone did wierd things with the CPU placement in driverfs, which clashes with this patch which moves it to kernel/cpu.c... Usage: 1) Apply patch, and boot resulting kernel. 2) echo 0 > /devices/root/sys/cpu0/online 3) echo 1 > /devices/root/sys/cpu0/online The CPU actually spins with interrupts off, doing cpu_relax() and polling a variable. It's basically useful for testing the unplug infrastructure and benchmarking. http://www.kernel.org/pub/linux/kernel/people/rusty/patches/hotcpu-x86-28-10-2002.2.5.44.diff.gz Cheers! Rusty. -- Anyone who quotes me in their sig is an idiot. -- Rusty Russell. - 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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