linux-kernel - [PATCHSET wq/for-6.12] workqueue: Use wq_online_cpumask consistently and make CPU hotplug unbound pwq updates asynchronous

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Message-ID: <20240802211850.1211737-1-tj@kernel.org>
Date: Fri,  2 Aug 2024 11:18:16 -1000
From: Tejun Heo <tj@...nel.org>
To: jiangshanlai@...il.com
Cc: linux-kernel@...r.kernel.org,
	kernel-team@...a.com
Subject: [PATCHSET wq/for-6.12] workqueue: Use wq_online_cpumask consistently and make CPU hotplug unbound pwq updates asynchronous

Hello,

Make wq_online_cpumask more consistently which also simplifies the code, and
make unbound pwq updates from CPU hotplug path asynchronous so that we don't
add additional dependency on fork from CPU hotplug.

 0001-workqueue-Make-wq_affn_dfl_set-use-wq_online_cpumask.patch
 0002-workqueue-Make-wq_update_node_max_active-use-wq_onli.patch
 0003-workqueue-s-unbound_wq_update_pwq-update_unbound_pwq.patch
 0004-workqueue-Make-unbound-pwq-updates-from-CPU-hotplug-.patch

The patches are also available in

 git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq.git use-wq_online_cpumask

diffstat follows. Thanks.

 kernel/workqueue.c |  121 ++++++++++++++++++++++++++++++++++-----------------------------------------
 1 file changed, 56 insertions(+), 65 deletions(-)

--
tejun