linux-kernel - Re: [RFC] workqueue: avoiding unbounded wq on isolated CPUs by default

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Message-ID: <20150716192448.GY15934@mtj.duckdns.org>
Date:	Thu, 16 Jul 2015 15:24:48 -0400
From:	Tejun Heo <tj@...nel.org>
To:	Daniel Bristot de Oliveira <bristot@...hat.com>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Lai Jiangshan <jiangshanlai@...il.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Rik van Riel <riel@...hat.com>,
	"Luis Claudio R. Goncalves" <lclaudio@...g.org>
Subject: Re: [RFC] workqueue: avoiding unbounded wq on isolated CPUs by
 default

Hello,

On Thu, Jul 16, 2015 at 04:16:23PM -0300, Daniel Bristot de Oliveira wrote:
> By default, unbounded workqueues run on all CPUs, which includes
> isolated CPUs. This patch avoids unbounded workqueues running on
> isolated CPUs by default, keeping the current behavior when no
> CPUs were isolated.

I don't have a strong opinion about this.  Frederic, was there a
reason we didn't do this when we added cpumasks for unbound wq's?

Thanks.

-- 
tejun
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