From: Tejun Heo <tj@kernel.org>
To: Waiman Long <longman@redhat.com>
Cc: "Zefan Li" <lizefan.x@bytedance.com>,
"Johannes Weiner" <hannes@cmpxchg.org>,
"Michal Koutný" <mkoutny@suse.com>,
"Shuah Khan" <shuah@kernel.org>,
linux-kernel@vger.kernel.org, cgroups@vger.kernel.org,
linux-kselftest@vger.kernel.org,
"Chen Ridong" <chenridong@huawei.com>
Subject: Re: [PATCH-cgroup 3/5] cgroup/cpuset: Eliminate unncessary sched domains rebuilds in hotplug
Date: Mon, 5 Aug 2024 10:55:01 -1000 [thread overview]
Message-ID: <ZrE8JW4Z34am2YU5@slm.duckdns.org> (raw)
In-Reply-To: <20240805013019.724300-4-longman@redhat.com>
On Sun, Aug 04, 2024 at 09:30:17PM -0400, Waiman Long wrote:
> It was found that some hotplug operations may cause multiple
> rebuild_sched_domains_locked() calls. Some of those intermediate calls
> may use cpuset states not in the final correct form leading to incorrect
> sched domain setting.
>
> Fix this problem by using the existing force_rebuild flag to inhibit
> immediate rebuild_sched_domains_locked() calls if set and only doing
> one final call at the end. Also renaming the force_rebuild flag to
> force_sd_rebuild to make its meaning for clear.
>
> Signed-off-by: Waiman Long <longman@redhat.com>
Applied to cgroup/for-6.11-fixes.
Thanks.
--
tejun
next prev parent reply other threads:[~2024-08-05 20:55 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-08-05 1:30 [PATCH-cgroup 0/5] cgroup/cpuset: Miscellaneous cpuset updates for 6.12 Waiman Long
2024-08-05 1:30 ` [PATCH-cgroup 1/5] cgroup/cpuset: fix panic caused by partcmd_update Waiman Long
2024-08-05 1:30 ` [PATCH-cgroup 2/5] cgroup/cpuset: Clear effective_xcpus on cpus_allowed clearing only if cpus.exclusive not set Waiman Long
2024-08-05 20:53 ` Tejun Heo
2024-08-05 1:30 ` [PATCH-cgroup 3/5] cgroup/cpuset: Eliminate unncessary sched domains rebuilds in hotplug Waiman Long
2024-08-05 20:55 ` Tejun Heo [this message]
2024-08-05 1:30 ` [PATCH-cgroup 4/5] cgroup/cpuset: Check for partition roots with overlapping CPUs Waiman Long
2024-08-05 1:30 ` [PATCH-cgroup 5/5] selftest/cgroup: Add new test cases to test_cpuset_prs.sh Waiman Long
2024-08-05 20:58 ` Tejun Heo
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