From: Frederic Weisbecker <frederic@kernel.org>
To: Waiman Long <longman@redhat.com>
Cc: "Chen Ridong" <chenridong@huaweicloud.com>,
"Tejun Heo" <tj@kernel.org>,
"Johannes Weiner" <hannes@cmpxchg.org>,
"Michal Koutný" <mkoutny@suse.com>,
"Ingo Molnar" <mingo@redhat.com>,
"Peter Zijlstra" <peterz@infradead.org>,
"Juri Lelli" <juri.lelli@redhat.com>,
"Vincent Guittot" <vincent.guittot@linaro.org>,
"Steven Rostedt" <rostedt@goodmis.org>,
"Ben Segall" <bsegall@google.com>, "Mel Gorman" <mgorman@suse.de>,
"Valentin Schneider" <vschneid@redhat.com>,
"Thomas Gleixner" <tglx@linutronix.de>,
"Shuah Khan" <shuah@kernel.org>,
cgroups@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-kselftest@vger.kernel.org
Subject: Re: [PATCH v6 4/8] cgroup/cpuset: Set isolated_cpus_updating only if isolated_cpus is changed
Date: Thu, 26 Feb 2026 16:07:16 +0100 [thread overview]
Message-ID: <aaBhpE9mw6CcWtPF@localhost.localdomain> (raw)
In-Reply-To: <20260221185418.29319-5-longman@redhat.com>
Le Sat, Feb 21, 2026 at 01:54:14PM -0500, Waiman Long a écrit :
> As cpuset is updating HK_TYPE_DOMAIN housekeeping mask when there is
> a change in the set of isolated CPUs, making this change is now more
> costly than before. Right now, the isolated_cpus_updating flag can be
> set even if there is no real change in isolated_cpus. Put in additional
> checks to make sure that isolated_cpus_updating is set only if there
> is a real change in isolated_cpus.
>
> Reviewed-by: Chen Ridong <chenridong@huaweicloud.com>
> Signed-off-by: Waiman Long <longman@redhat.com>
Reviewed-by: Frederic Weisbecker <frederic@kernel.org>
--
Frederic Weisbecker
SUSE Labs
next prev parent reply other threads:[~2026-02-26 15:07 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-21 18:54 [PATCH v6 0/8] cgroup/cpuset: Fix partition related locking issues Waiman Long
2026-02-21 18:54 ` [PATCH v6 1/8] cgroup/cpuset: Fix incorrect change to effective_xcpus in partition_xcpus_del() Waiman Long
2026-02-21 18:54 ` [PATCH v6 2/8] cgroup/cpuset: Fix incorrect use of cpuset_update_tasks_cpumask() in update_cpumasks_hier() Waiman Long
2026-02-21 18:54 ` [PATCH v6 3/8] cgroup/cpuset: Clarify exclusion rules for cpuset internal variables Waiman Long
2026-02-26 15:00 ` Frederic Weisbecker
2026-02-21 18:54 ` [PATCH v6 4/8] cgroup/cpuset: Set isolated_cpus_updating only if isolated_cpus is changed Waiman Long
2026-02-26 15:07 ` Frederic Weisbecker [this message]
2026-02-21 18:54 ` [PATCH v6 5/8] kselftest/cgroup: Simplify test_cpuset_prs.sh by removing "S+" command Waiman Long
2026-02-21 18:54 ` [PATCH v6 6/8] cgroup/cpuset: Move housekeeping_update()/rebuild_sched_domains() together Waiman Long
2026-02-26 15:51 ` Frederic Weisbecker
2026-02-21 18:54 ` [PATCH v6 7/8] cgroup/cpuset: Defer housekeeping_update() calls from CPU hotplug to workqueue Waiman Long
2026-02-26 16:06 ` Frederic Weisbecker
2026-03-03 16:00 ` Waiman Long
2026-03-03 22:48 ` Frederic Weisbecker
2026-03-04 4:05 ` Waiman Long
2026-03-02 11:49 ` Frederic Weisbecker
2026-03-03 15:18 ` Jon Hunter
2026-03-03 16:09 ` Waiman Long
2026-03-04 3:58 ` Waiman Long
2026-03-04 11:07 ` Jon Hunter
2026-03-04 18:11 ` Waiman Long
2026-02-21 18:54 ` [PATCH v6 8/8] cgroup/cpuset: Call housekeeping_update() without holding cpus_read_lock Waiman Long
2026-03-02 12:14 ` Frederic Weisbecker
2026-03-02 14:15 ` Waiman Long
2026-03-02 15:40 ` Waiman Long
2026-02-23 20:57 ` [PATCH v6 0/8] cgroup/cpuset: Fix partition related locking issues Tejun Heo
2026-02-23 21:11 ` Waiman Long
2026-02-24 7:51 ` Chen Ridong
2026-03-02 12:21 ` Frederic Weisbecker
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