Re: [RFC PATCH v3 1/9] CPU hotplug: Provide APIs to prevent CPUoffline from atomic context

[Tejun Heo]

Hello, Srivatsa.

On Tue, Dec 11, 2012 at 06:43:54PM +0530, Srivatsa S. Bhat wrote:
> This approach (of using synchronize_sched()) also looks good. It is simple,
> yet effective, but unfortunately inefficient at the writer side (because
> he'll have to wait for a full synchronize_sched()).

While synchornize_sched() is heavier on the writer side than the
originally posted version, it doesn't stall the whole machine and
wouldn't introduce latencies to others.  Shouldn't that be enough?

Thanks.

-- 
tejun
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