linux-kernel - Re: [RFC][PATCH 1/9] sched: Introduce power scheduler

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Message-ID: <51DC3ED6.9050607@linux.intel.com>
Date:	Tue, 09 Jul 2013 09:48:22 -0700
From:	Arjan van de Ven <arjan@...ux.intel.com>
To:	Morten Rasmussen <morten.rasmussen@....com>
CC:	mingo@...nel.org, peterz@...radead.org, vincent.guittot@...aro.org,
	preeti@...ux.vnet.ibm.com, alex.shi@...el.com, efault@....de,
	pjt@...gle.com, len.brown@...el.com, corbet@....net,
	akpm@...ux-foundation.org, torvalds@...ux-foundation.org,
	tglx@...utronix.de, catalin.marinas@....com,
	linux-kernel@...r.kernel.org, linaro-kernel@...ts.linaro.org
Subject: Re: [RFC][PATCH 1/9] sched: Introduce power scheduler

On 7/9/2013 8:55 AM, Morten Rasmussen wrote:
> +void power_schedule_wq(struct work_struct *work)
> +{
> +	__power_schedule();
> +	mod_delayed_work_on(schedule_cpu(), system_wq, &dwork,
> +				msecs_to_jiffies(INTERVAL));
> +}

please tell me this is at least a deferable timer kind of work?

waking the cpu up all the time even when idle is a huge negative on power ;-(

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