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From: Chen Ridong <chenridong@huaweicloud.com>
To: longman@redhat.com, tj@kernel.org, hannes@cmpxchg.org, mkoutny@suse.com
Cc: cgroups@vger.kernel.org, linux-kernel@vger.kernel.org,
	lujialin4@huawei.com, chenridong@huawei.com
Subject: [PATCH -next RFC 02/11] cpuset: remove unused assignment to trialcs->partition_root_state
Date: Thu, 28 Aug 2025 12:56:22 +0000	[thread overview]
Message-ID: <20250828125631.1978176-3-chenridong@huaweicloud.com> (raw)
In-Reply-To: <20250828125631.1978176-1-chenridong@huaweicloud.com>

From: Chen Ridong <chenridong@huawei.com>

The trialcs->partition_root_state field is not used during the
configuration of 'cpuset.cpus' or 'cpuset.cpus.exclusive'. Therefore,
the assignment of values to this field can be safely removed.

Signed-off-by: Chen Ridong <chenridong@huawei.com>
---
 kernel/cgroup/cpuset.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/kernel/cgroup/cpuset.c b/kernel/cgroup/cpuset.c
index 7e6a40e361ea..6fc25fd2300b 100644
--- a/kernel/cgroup/cpuset.c
+++ b/kernel/cgroup/cpuset.c
@@ -2364,7 +2364,6 @@ static int update_cpumask(struct cpuset *cs, struct cpuset *trialcs,
 		 * trialcs->effective_xcpus is used as a temporary cpumask
 		 * for checking validity of the partition root.
 		 */
-		trialcs->partition_root_state = PRS_MEMBER;
 		if (!cpumask_empty(trialcs->exclusive_cpus) || is_partition_valid(cs))
 			compute_effective_exclusive_cpumask(trialcs, NULL, cs);
 	}
@@ -2498,7 +2497,6 @@ static int update_exclusive_cpumask(struct cpuset *cs, struct cpuset *trialcs,
 		return 0;
 
 	if (*buf) {
-		trialcs->partition_root_state = PRS_MEMBER;
 		/*
 		 * Reject the change if there is exclusive CPUs conflict with
 		 * the siblings.
-- 
2.34.1


  parent reply	other threads:[~2025-08-28 13:11 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-08-28 12:56 [PATCH -next RFC 00/11] Refactor cpus mask setting Chen Ridong
2025-08-28 12:56 ` [PATCH -next RFC 01/11] cpuset: move the root cpuset write check earlier Chen Ridong
2025-08-29 19:21   ` Waiman Long
2025-08-30  1:11     ` Chen Ridong
2025-08-28 12:56 ` Chen Ridong [this message]
2025-08-28 12:56 ` [PATCH -next RFC 03/11] cpuset: change return type of is_partition_[in]valid to bool Chen Ridong
2025-08-28 12:56 ` [PATCH -next RFC 04/11] cpuset: Refactor exclusive CPU mask computation logic Chen Ridong
2025-08-28 12:56 ` [PATCH -next RFC 05/11] cpuset: refactor CPU mask buffer parsing logic Chen Ridong
2025-08-28 12:56 ` [PATCH -next RFC 06/11] cpuset: introduce cpus_excl_conflict and mems_excl_conflict helpers Chen Ridong
2025-08-29 19:29   ` Waiman Long
2025-08-30  1:27     ` Chen Ridong
2025-08-28 12:56 ` [PATCH -next RFC 07/11] cpuset: refactor out invalidate_cs_partition Chen Ridong
2025-08-29 19:56   ` Waiman Long
2025-08-30  1:33     ` Chen Ridong
2025-08-28 12:56 ` [PATCH -next RFC 08/11] cpuset: refactor acpus_validate_change Chen Ridong
2025-08-29 20:12   ` Waiman Long
2025-08-30  1:42     ` Chen Ridong
2025-08-28 12:56 ` [PATCH -next RFC 09/11] cpuset: refactor partition_cpus_change Chen Ridong
2025-08-29 20:32   ` Waiman Long
2025-08-30  2:01     ` Chen Ridong
2025-09-02 13:30       ` Waiman Long
2025-09-03  0:51         ` Chen Ridong
2025-08-28 12:56 ` [PATCH -next RFC 10/11] cpuset: use parse_cpulist for setting cpus.exclusive Chen Ridong
2025-08-28 12:56 ` [PATCH -next RFC 11/11] cpuset: use partition_cpus_change for setting exclusive cpus Chen Ridong

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