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From: Tejun Heo <tj@kernel.org>
To: Juri Lelli <juri.lelli@redhat.com>
Cc: Aaron Tomlin <atomlin@atomlin.com>,
	linux-kernel@vger.kernel.org, jiangshanlai@gmail.com,
	peterz@infradead.org
Subject: Re: [RFC PATCH 0/2] workqueue: Introduce PF_WQ_RESCUE_WORKER
Date: Wed, 13 Dec 2023 08:38:31 -1000	[thread overview]
Message-ID: <ZXn6J5bN-dPC1WSk@slm.duckdns.org> (raw)
In-Reply-To: <ZXn4qiMetd7zY1sb@localhost.localdomain>

On Wed, Dec 13, 2023 at 07:32:10PM +0100, Juri Lelli wrote:
> > Maybe the easiest way to do this is making rescuer_thread() restore the wq's
> > cpumask right before going to sleep, and making apply_wqattrs_commit() just
> > wake up the rescuer.
> 
> Hummm, don't think we can call that either while the rescuer is actually
> running. Maybe we can simply s/kthread_bind_mask/set_cpus_allowed_ptr/
> in the above?

So, we have to use set_cpus_allowed_ptr() but we still don't want to change
the affinity of a rescuer which is already running a task for a pool.

Thanks.

-- 
tejun

  reply	other threads:[~2023-12-13 18:38 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-07-29 13:53 [RFC PATCH 0/2] workqueue: Introduce PF_WQ_RESCUE_WORKER Aaron Tomlin
2023-07-29 13:53 ` [RFC PATCH 1/2] " Aaron Tomlin
2023-07-29 16:07   ` Peter Zijlstra
2023-08-01 10:04     ` Aaron Tomlin
2023-07-29 13:53 ` [RFC PATCH 2/2] workqueue: Simplify current_is_workqueue_rescuer() Aaron Tomlin
2023-07-31 23:35 ` [RFC PATCH 0/2] workqueue: Introduce PF_WQ_RESCUE_WORKER Tejun Heo
2023-08-01 10:53   ` Aaron Tomlin
2023-08-02 18:10     ` Tejun Heo
2023-08-03 20:19       ` Aaron Tomlin
2023-08-03 20:34         ` Tejun Heo
2023-08-05 23:45           ` Aaron Tomlin
2023-12-11 14:51 ` Juri Lelli
2023-12-11 18:39   ` Tejun Heo
2023-12-12  9:56     ` Juri Lelli
2023-12-12 17:14       ` Tejun Heo
2023-12-12 19:06         ` Aaron Tomlin
2023-12-12 20:16           ` Tejun Heo
2023-12-13  8:59         ` Juri Lelli
2023-12-13 15:35           ` Tejun Heo
2023-12-13 18:32             ` Juri Lelli
2023-12-13 18:38               ` Tejun Heo [this message]
2023-12-14 11:25                 ` Juri Lelli
2023-12-14 19:47                   ` Tejun Heo
2023-12-15  6:50                     ` Juri Lelli
2023-12-19  8:55                       ` Juri Lelli

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