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Sender: Tejun Heo <htejun@gmail.com>
Date:   Mon, 10 Jul 2023 11:01:36 -1000
From:   Tejun Heo <tj@kernel.org>
To:     Waiman Long <longman@redhat.com>
Cc:     Zefan Li <lizefan.x@bytedance.com>,
        Johannes Weiner <hannes@cmpxchg.org>,
        Jonathan Corbet <corbet@lwn.net>,
        Shuah Khan <shuah@kernel.org>, linux-kernel@vger.kernel.org,
        cgroups@vger.kernel.org, linux-doc@vger.kernel.org,
        linux-kselftest@vger.kernel.org,
        Juri Lelli <juri.lelli@redhat.com>,
        Valentin Schneider <vschneid@redhat.com>,
        Frederic Weisbecker <frederic@kernel.org>,
        Mrunal Patel <mpatel@redhat.com>,
        Ryan Phillips <rphillips@redhat.com>,
        Brent Rowsell <browsell@redhat.com>,
        Peter Hunt <pehunt@redhat.com>, Phil Auld <pauld@redhat.com>
Subject: Re: [PATCH v4 4/9] cgroup/cpuset: Allow suppression of sched domain
 rebuild in update_cpumasks_hier()
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References: <20230627143508.1576882-1-longman@redhat.com>
 <20230627143508.1576882-5-longman@redhat.com>
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On Tue, Jun 27, 2023 at 10:35:03AM -0400, Waiman Long wrote:
> A single partition setup and tear-down operation can lead to
> multiple rebuild_sched_domains_locked() calls which is a waste of
> effort. This can partly be mitigated by adding a flag to suppress the
> rebuild_sched_domains_locked() call in update_cpumasks_hier(). Since
> a Boolean flag has already been passed as the 3rd argument to
> update_cpumasks_hier(), we can extend that to a full flag word.
> 
> The sched domain rebuild suppression is now enabled in
> update_sibling_cpumasks() as all it callers will do the sched domain
> rebuild after its return later on anyway.
> 
> Signed-off-by: Waiman Long <longman@redhat.com>

Applied 1-3 to cgroup/for-6.6.

Thanks.

-- 
tejun