Re: [PATCH v8 4/6] cpuset: Make generate_sched_domains() recognize isolated_cpus

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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?
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