From: Waiman Long <longman@redhat.com>
To: Qiliang Yuan <realwujing@gmail.com>, peterz@infradead.org
Cc: cgroups@vger.kernel.org, akpm@linux-foundation.org,
anna-maria@linutronix.de, boqun.feng@gmail.com,
bsegall@google.com, dietmar.eggemann@arm.com,
frederic@kernel.org, hannes@cmpxchg.org, jackmanb@google.com,
jiangshanlai@gmail.com, joelagnelf@nvidia.com,
josh@joshtriplett.org, juri.lelli@redhat.com,
linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org,
linux-mm@kvack.org, mathieu.desnoyers@efficios.com,
mgorman@suse.de, mhocko@suse.com, mingo@kernel.org,
mingo@redhat.com, neeraj.upadhyay@kernel.org, paulmck@kernel.org,
qiang.zhang@linux.dev, rcu@vger.kernel.org, rostedt@goodmis.org,
shuah@kernel.org, surenb@google.com, tglx@kernel.org,
tj@kernel.org, urezki@gmail.com, vbabka@suse.cz,
vincent.guittot@linaro.org, vschneid@redhat.com, ziy@nvidia.com
Subject: Re: [PATCH 06/15] sched/core: Dynamically update scheduler domain housekeeping mask
Date: Tue, 31 Mar 2026 00:03:26 -0400 [thread overview]
Message-ID: <18473552-2a97-4da9-9f44-ac49d4131004@redhat.com> (raw)
In-Reply-To: <20260330114516.103451-1-realwujing@gmail.com>
On 3/30/26 7:45 AM, Qiliang Yuan wrote:
> On Wed, Mar 25, 2026 at 03:00:53PM +0100, Peter Zijlstra wrote:
>> Sched domain boundaries are not static, they are easily changed by
>> cpuset partition (v1 and v2 both support this).
> You're absolutely right. My description was imprecise. The goal of this
> patch was to ensure that the housekeeping mask for scheduler domains
> follows the partition boundaries dynamically as they are resized.
>
> In V13, I will explicitly integrate the housekeeping update logic
> directly with `cpuset.cpus.partition` transitions. This way, any change
> to the isolation level of a partition will automatically update
> the kernel-internal housekeeping state, avoiding any parallel management
> logic.
It looks like your patch series isn't based on the latest v7.0 kernel.
With the latest upstream kernel, the HK_TYPE_DOMAIN cpumask has been
updated to dynamically follow changes made in the cpuset isolated
partition setting.
Cheers,
Longman
prev parent reply other threads:[~2026-03-31 4:03 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20260325140053.GC3738786@noisy.programming.kicks-ass.net>
2026-03-30 11:45 ` [PATCH 06/15] sched/core: Dynamically update scheduler domain housekeeping mask Qiliang Yuan
2026-03-31 4:03 ` Waiman Long [this message]
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