Messages in this thread | | | Date | Mon, 20 May 2013 16:36:12 +0900 | From | Tejun Heo <> | Subject | Re: NOHZ: WARNING: at arch/x86/kernel/smp.c:123 native_smp_send_reschedule, round 2 |
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Hello,
On Mon, May 20, 2013 at 08:47:27AM +0200, Borislav Petkov wrote: > > So there are two questions here: > > 1. Is gov_queue_work() want to queue the work on offline cpu? > > 2. Is mod_delayed_work_on() allow offline cpu? > > > > I guess both should be false? > > Well, if we don't allow queueing work on a cpu which goes offline, i.e. > #2, the problem should be solved. > > Tejun?
Workqueue proper would behave okish (no affinity of course but the work items are still executed) but mod_delayed_work_on() adds a timer on the target CPU and I think adding a timer on an offline cpu would be a problem.
Thanks.
-- tejun
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