linux-kernel - Re: [PATCH] clocksource: add enable() and disable() callbacks

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Date:	Fri, 12 Dec 2008 12:34:50 +0900
From:	"Magnus Damm" <magnus.damm@...il.com>
To:	"Andrew Morton" <akpm@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org, johnstul@...ibm.com,
	lethal@...ux-sh.org, tglx@...utronix.de, mingo@...hat.com
Subject: Re: [PATCH] clocksource: add enable() and disable() callbacks

On Fri, Dec 12, 2008 at 12:08 PM, Andrew Morton
<akpm@...ux-foundation.org> wrote:
> On Thu, 11 Dec 2008 20:49:09 +0900 Magnus Damm <magnus.damm@...il.com> wrote:
>
>> From: Magnus Damm <damm@...l.co.jp>
>>
>> Add enable() and disable() callbacks for clocksources. This allows
>> us to put unused clocksources in power save mode. The functions
>> clocksource_enable() and clocksource_disable() wrap the callbacks
>> and are inserted in the timekeeping code to enable before use and
>> disable after switching to a new clocksource.
>>
>> Signed-off-by: Magnus Damm <damm@...l.co.jp>
>> Acked-by: John Stultz <johnstul@...ibm.com>
>> ---
>>
>>  Same as before, but applies on top of the new read() patch.
>
> I asusme we'll be seeing some patches which _use_ these changes?

I've send a few iterations of my SuperH CMT timer patches to the
linux-sh list, but I'd be happy to post next version to lkml instead
if you prefer that!

The CMT driver also needs the following patches:

[PATCH] clocksource: pass clocksource to read() callback
[PATCH][RFC] early platform driver support

Any comments on the early platform driver code?

Thanks,

/ magnus
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