linux-kernel - [PATCH RFC v2 07/22] cpuset: use partition_enable() for remote partition enablement

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Message-Id: <20251025064844.495525-8-chenridong@huaweicloud.com>
Date: Sat, 25 Oct 2025 06:48:29 +0000
From: Chen Ridong <chenridong@...weicloud.com>
To: longman@...hat.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: [PATCH RFC v2 07/22] cpuset: use partition_enable() for remote partition enablement

From: Chen Ridong <chenridong@...wei.com>

Now that the partition_enable() helper is available, replace the
existing implementation for remote partition enablement with this
centralized function to unify the enablement logic.

Signed-off-by: Chen Ridong <chenridong@...wei.com>
---
 kernel/cgroup/cpuset.c | 12 +-----------
 1 file changed, 1 insertion(+), 11 deletions(-)

diff --git a/kernel/cgroup/cpuset.c b/kernel/cgroup/cpuset.c
index 3e414e19ae31..ee1140cf45b9 100644
--- a/kernel/cgroup/cpuset.c
+++ b/kernel/cgroup/cpuset.c
@@ -1712,8 +1712,6 @@ static enum prs_errcode validate_partition(struct cpuset *cs, int new_prs,
 static int remote_partition_enable(struct cpuset *cs, int new_prs,
 				   struct tmpmasks *tmp)
 {
-	bool isolcpus_updated;
-
 	/*
 	 * The user must have sysadmin privilege.
 	 */
@@ -1736,15 +1734,7 @@ static int remote_partition_enable(struct cpuset *cs, int new_prs,
 	    cpumask_subset(top_cpuset.effective_cpus, tmp->new_cpus))
 		return PERR_INVCPUS;
 
-	spin_lock_irq(&callback_lock);
-	isolcpus_updated = partition_xcpus_add(new_prs, NULL, tmp->new_cpus);
-	list_add(&cs->remote_sibling, &remote_children);
-	cpumask_copy(cs->effective_xcpus, tmp->new_cpus);
-	spin_unlock_irq(&callback_lock);
-	update_unbound_workqueue_cpumask(isolcpus_updated);
-	cpuset_force_rebuild();
-	cs->prs_err = 0;
-
+	partition_enable(cs, NULL, new_prs, tmp->new_cpus);
 	/*
 	 * Propagate changes in top_cpuset's effective_cpus down the hierarchy.
 	 */
-- 
2.34.1