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SubjectRe: [PATCH] cgroup/cpuset: remove circular dependency deadlock
On Wed, Oct 25, 2017 at 02:09:54PM +0530, Prateek Sood wrote:
> > void cpuset_update_active_cpus(void)
> > {
> > + mutex_lock(&cpuset_mutex);
> > + rebuild_sched_domains_cpuslocked();
> > + mutex_unlock(&cpuset_mutex);
> > }
>
> In the above patch rebuild_sched_domains_cpuslocked() has been
> used directly. Earlier cpuset_hotplug_update_tasks() was also
> called from cpuset_hotplug_workfn(). So migration of tasks
> related to cgroup which has empty cpuset would not happen
> during cpu hotplug.
>
>
> Could you please help in understanding more on this.
>

That was me being lazy...

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