From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jacob Pan <jacob.jun.pan@linux.intel.com>
Subject: Re: [PATCH 3/3] PM: Introduce Intel PowerClamp Driver
Date: Tue, 13 Nov 2012 17:14:50 -0800
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To: Arjan van de Ven <arjan@linux.intel.com>
Cc: paulmck@linux.vnet.ibm.com, Linux PM <linux-pm@vger.kernel.org>, LKML <linux-kernel@vger.kernel.org>, Rafael Wysocki <rafael.j.wysocki@intel.com>, Len Brown <len.brown@intel.com>, Thomas Gleixner <tglx@linutronix.de>, "H. Peter Anvin" <hpa@zytor.com>, Ingo Molnar <mingo@elte.hu>, Zhang Rui <rui.zhang@intel.com>, Rob Landley <rob@landley.net>
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On Tue, 13 Nov 2012 16:08:54 -0800
Arjan van de Ven <arjan@linux.intel.com> wrote:

> > I think I know, but I feel the need to ask anyway.  Why not tell
> > RCU about the clamping?  
> 
> I don't mind telling RCU, but what cannot happen is a bunch of CPU
> time suddenly getting used (since that is the opposite of what is
> needed at the specific point in time of going idle)
Another reason is my observation that there are some assumptions/checks
to make sure only idle thread can tell rcu it is idle. Is it ok to
extend that to other kthreads?

-- 
Thanks,

Jacob