Messages in this thread | | | Subject | Re: CPU Hotplug rework | From | Steven Rostedt <> | Date | Mon, 26 Mar 2012 09:09:46 -0400 |
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On Mon, 2012-03-26 at 10:02 +0200, Peter Zijlstra wrote: > On Mon, 2012-03-26 at 11:11 +1030, Rusty Russell wrote: > > Obviously, having callbacks hanging around until the CPU comes back is > > not viable, nor is blocking preempt during the callbacks. Calling > > get_online_cpus() is too heavy. > > -rt has patches (albeit somewhat ugly) to make get_online_cpus() a br > style rw-lock.
Unfortunately, -rt still has broken cpu hotplug.
-- Steve
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