linux-kernel - Re: [RFC PATCH] PM, freezer: Don't thaw when it's intended frozen processes

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Message-ID: <20150513135438.GR11388@htj.duckdns.org>
Date:	Wed, 13 May 2015 09:54:38 -0400
From:	Tejun Heo <tj@...nel.org>
To:	Kyungmin Park <kmpark@...radead.org>
Cc:	linux-mm <linux-mm@...ck.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"\\Rafael J. Wysocki\\" <rjw@...ysocki.net>,
	David Rientjes <rientjes@...gle.com>,
	Johannes Weiner <hannes@...xchg.org>,
	Oleg Nesterov <oleg@...hat.com>,
	Cong Wang <xiyou.wangcong@...il.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Linux PM list <linux-pm@...r.kernel.org>
Subject: Re: [RFC PATCH] PM, freezer: Don't thaw when it's intended frozen
 processes

On Wed, May 13, 2015 at 09:42:47AM +0900, Kyungmin Park wrote:
> Right, it's still in freezer, just one time scheduling is happened.
> and enter freeze state again.
> 
> do you think can we avoid it or it's sub-optimal to do as patch?

I mean, it's suboptimal.  I'm not sure it actually matters tho.  If it
matters, please feel free to submit a patch with proper rationale.
Please just be careful so that we don't miss sending out wakeup in
case we race against thawing.

Thanks.

-- 
tejun
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