Re: NOHZ: WARNING: at arch/x86/kernel/smp.c:123 native_smp_send_reschedule,round 2

From: Viresh Kumar
Date: Mon May 20 2013 - 05:40:48 EST

On 20 May 2013 15:01, Srivatsa S. Bhat <srivatsa.bhat@xxxxxxxxxxxxxxxxxx> wrote:
> And Viresh, in the regular hotplug paths, the call to gov_cancel_work() is
> supposed to kill any pending workqueue functions pertaining to offline CPUs
> right?

Yes.. It will cancel work for all cpus first and will start again for
online cpus again.

> Could there be a synchronization bug somewhere due to which this
> might not be happening properly?

Not sure.. I have seen mutex's are used well in cpufreq_governor.. don't know
if I missed something.
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