Messages in this thread | | | Date | Wed, 26 Jun 2013 08:21:48 -0700 | From | Tejun Heo <> | Subject | Re: [PATCH v2 15/45] rcu: Use get/put_online_cpus_atomic() to prevent CPU offline |
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On Wed, Jun 26, 2013 at 10:51:11AM -0400, Steven Rostedt wrote: > > It would also increase the latency of CPU-hotunplug operations. > > Is that a big deal?
I thought that was the whole deal with this patchset - making cpu hotunplugs lighter and faster mostly for powersaving. That said, just removing stop_machine call would be a pretty good deal and I don't know how meaningful reducing CPU hotunplug latency is. Srivatsa?
Thanks.
-- tejun
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