linux-kernel - Re: [PATCH RFC v2 12/22] cpuset: introduce local_partition

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Message-ID: <52aa0b5d-cc4c-4072-a590-9944fff4bce0@redhat.com>
Date: Wed, 12 Nov 2025 19:15:53 -0500
From: Waiman Long <llong@...hat.com>
To: Chen Ridong <chenridong@...weicloud.com>, tj@...nel.org,
 hannes@...xchg.org, mkoutny@...e.com
Cc: cgroups@...r.kernel.org, linux-kernel@...r.kernel.org,
 lujialin4@...wei.com, chenridong@...wei.com
Subject: Re: [PATCH RFC v2 12/22] cpuset: introduce
 local_partition_invalidate()


On 10/25/25 2:48 AM, Chen Ridong wrote:
> From: Chen Ridong <chenridong@...wei.com>
>
> Build on the partition_disable() infrastructure introduced in the previous
> patch to handle local partition invalidation.
>
> The local_partition_invalidate() function factors out the local partition
> invalidation logic from update_parent_effective_cpumask(), which delegates
> to partition_disable() to complete the invalidation process.
>
> Additionally, correct the transition logic in cpuset_hotplug_update_tasks()
> when determining whether to transition an invalid partition root, the check
> should be based on non-empty user_cpus rather than non-empty

"user_xcpus"

Cheers,
Longman