linux-kernel - Re: [PATCH wq/for-3.14 2/2] workqueue: implement @drain for workqueue_set_max

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Message-ID: <20131220133220.GB4298@htj.dyndns.org>
Date:	Fri, 20 Dec 2013 08:32:20 -0500
From:	Tejun Heo <tj@...nel.org>
To:	"Rafael J. Wysocki" <rjw@...ysocki.net>
Cc:	Nigel Cunningham <nigel@...elcunningham.com.au>,
	"Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
	Jens Axboe <axboe@...nel.dk>, tomaz.solc@...lix.org,
	aaron.lu@...el.com, linux-kernel@...r.kernel.org,
	Oleg Nesterov <oleg@...hat.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Fengguang Wu <fengguang.wu@...el.com>,
	Lai Jiangshan <laijs@...fujitsu.com>,
	David Howells <dhowells@...hat.com>
Subject: Re: [PATCH wq/for-3.14 2/2] workqueue: implement @drain for
 workqueue_set_max_active()

Hello, Rafael.

On Fri, Dec 20, 2013 at 02:31:37AM +0100, Rafael J. Wysocki wrote:
> > If this looks good to you, I'll commit it to wq/for-3.14 and we can at
> > least start to clean up things.
> 
> Yes, it does.
> 
> So with that I need to do workqueue_set_max_active(wq, WQ_FROZEN_ACTIVE) during
> suspend and then workqueue_set_max_active(wq, WQ_DFL_ACTIVE) during resume on
> my workqueue, right?

Yeah, you can also do workqueue_set_max_active(wq, 0) during resume to
restore the default value, which is what's used by alloc_workqueue()
anyway.

I'll apply the two patches to wq/for-3.14 once David reviews them or
if you wanna take them through the pm tree, that's fine too.  I don't
have anything scheduled for wq for the next merge window.

Thanks.

-- 
tejun
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