netdev - Re: [PATCH v1] net/core: support runtime PM on net

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Message-ID: <CACVXFVNXFEg0kiFb6RGfS9grYvyuRL-=jiqEdxDEnn0Avwpw9Q@mail.gmail.com>
Date:	Fri, 19 Oct 2012 09:45:04 +0800
From:	Ming Lei <ming.lei@...onical.com>
To:	Daniel Lezcano <daniel.lezcano@...aro.org>
Cc:	Bjørn Mork <bjorn@...k.no>,
	"David S. Miller" <davem@...emloft.net>,
	"Rafael J. Wysocki" <rjw@...k.pl>, Oliver Neukum <oneukum@...e.de>,
	Alan Stern <stern@...land.harvard.edu>, netdev@...r.kernel.org,
	linux-pm@...r.kernel.org
Subject: Re: [PATCH v1] net/core: support runtime PM on net_device

On Fri, Oct 19, 2012 at 12:34 AM, Daniel Lezcano
<daniel.lezcano@...aro.org> wrote:
> Hi Ming,
>
> IIUC, the pm_runtime is related to the device drivers, so at the first
> glance, we should see invocation of the runtime's functions in drivers/*
> and arch/*. Adding these calls in the net core, which makes sense at a
> certain point, is a bit weird for me.
>
> From my POV, if the drivers have been modified to support the pm_runtime
> and this new functionality brought a regression with the ioctl, that
> should be fixed in the drivers and not in the core code.
>
> What happens with your patch if we use ethtool on a virtual device like
> veth, macvlan, bridge, ... ?

No any effect no matter if these drivers implement runtime PM or not.


Thanks,
--
Ming Lei
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