linux-kernel - Re: [RFC][PATCH 2/7] sched: power: Power driver late callback interface

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Date:	Mon, 14 Oct 2013 15:42:39 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Morten Rasmussen <morten.rasmussen@....com>
Cc:	mingo@...nel.org, pjt@...gle.com, arjan@...ux.intel.com,
	rjw@...k.pl, dirk.j.brandewie@...el.com,
	vincent.guittot@...aro.org, alex.shi@...aro.org,
	preeti@...ux.vnet.ibm.com, efault@....de, corbet@....net,
	tglx@...utronix.de, catalin.marinas@....com,
	linux-kernel@...r.kernel.org, linaro-kernel@...ts.linaro.org
Subject: Re: [RFC][PATCH 2/7] sched: power: Power driver late callback
 interface

On Fri, Oct 11, 2013 at 06:19:12PM +0100, Morten Rasmussen wrote:
> Adds a late callback to the power driver interface which is called
> with irq enabled and no locks held. The power driver may postpone
> work that can't be done in schedule context (irq disabled and rq
> locks held) and let the late callback handle it.

What kind of things are we talking about here?
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