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SubjectRe: [RFC PATCH 01/15] nohz_task: New mask for cpus having nohz task
On 12/20/2010 11:24 PM, Frederic Weisbecker wrote:
>
> +config NO_HZ_TASK
> + bool "Tickless task"
> + depends on HAVE_NO_HZ_TASK && NO_HZ && SMP && HIGH_RES_TIMERS
> + help
> + When a task runs alone on a CPU and switches into this mode,
> + the timer interrupt will only trigger when it is strictly
> + needed.

Why it depends on SMP?



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