On 17/05/18 16:55, Waiman Long wrote: [...]
> @@ -849,7 +860,12 @@ static void rebuild_sched_domains_locked(void) > * passing doms with offlined cpu to partition_sched_domains(). > * Anyways, hotplug work item will rebuild sched domains. > */ > - if (!cpumask_equal(top_cpuset.effective_cpus, cpu_active_mask)) > + if (!top_cpuset.isolation_count && > + !cpumask_equal(top_cpuset.effective_cpus, cpu_active_mask)) > + goto out; > + > + if (top_cpuset.isolation_count && > + !cpumask_subset(top_cpuset.effective_cpus, cpu_active_mask)) > goto out; Do we cover the case in which hotplug removed one of the isolated cpus from cpu_active_mask?
