From: Dominik Brodowski <linux@dominikbrodowski.net>
To: Raj Kumar <rajkumar278@hotmail.com>, linux-pm@lists.linux-foundation.org
Subject: Re: your mail
Date: Sat, 18 Sep 2010 17:56:06 +0200 [thread overview]
Message-ID: <20100918155606.GA16269@isilmar-3.linta.de> (raw)
In-Reply-To: <Pine.LNX.4.44L0.1009181135000.10856-100000@netrider.rowland.org>
Hi Raj,
On Sat, Sep 18, 2010 at 11:36:16AM -0400, Alan Stern wrote:
> > I have question regarding the CPU frequency subsystem through which the frequency of the CPU is scaled.
> >
> > e.g. If we have device driver (X device contains processor) that wants to scale its own processor based
> >
> > upon the workload, (DVFS driver for this processor is implemented and registered with cpufreq subsystem)
> >
> > then X device driver when detects waorkload, Can this X device driver call policy governor APIS for scaling clock or
> >
> > this X device driver can directly calls DVFS driver APIs directly?
Best would be to register a cpufreq policy notifier,
(cpufreq_register_notifier()), and then call cpufreq_update_policy()
whenever the "X device driver" needs to modify its frequency constraints.
In addition, it would be best to discuss this on the cpufreq mailing list at
cpufreq@vger.kernel.org
Best,
Dominik
next prev parent reply other threads:[~2010-09-18 15:56 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <BLU102-W1030ED196ED7B94722F2A7EB830@phx.gbl>
[not found] ` <Pine.LNX.4.44L0.1008241029000.1652-100000@iolanthe.rowland.org>
2010-08-24 15:17 ` Runtime power management during system resume Raj Kumar
2010-08-24 17:50 ` Alan Stern
2010-08-25 13:27 ` Raj Kumar
2010-08-25 14:51 ` Alan Stern
2010-08-26 13:40 ` Raj Kumar
2010-08-26 14:33 ` Alan Stern
2010-09-18 11:49 ` (no subject) Raj Kumar
2010-09-18 15:36 ` your mail Alan Stern
2010-09-18 15:56 ` Dominik Brodowski [this message]
2010-10-05 21:40 ` Question about hibernation Raj Kumar
2010-10-05 22:43 ` Rafael J. Wysocki
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