linux-kernel - Re: [PATCH 12/23] clocksource: add clocksource_get

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Date:	Wed, 31 Jan 2007 08:40:46 -0800
From:	Daniel Walker <dwalker@...sta.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	akpm@...l.org, linux-kernel@...r.kernel.org, johnstul@...ibm.com,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH 12/23] clocksource: add clocksource_get_clock()

On Wed, 2007-01-31 at 12:46 +0100, Ingo Molnar wrote:
> * Daniel Walker <dwalker@...sta.com> wrote:
> 
> > One new API call clocksource_get_clock() which allows clocks to be 
> > selected based on their name, or if the name is null the highest rated 
> > clock is returned.
> 
> this one (and the dependent APIs utilizations) look a step in the right 
> direction to me, but they are not fully consequent and thus a bit 
> confusing at the moment:
> 
> - the current_clocksource is now something that is conceptually related 
>   to timekeeping - while it still resides in the clocksource domain.

Yes . The sysfs code gets moved in the next patch so it resides in the
timekeeping code .. 

> - if we do this split there should be a separate sysfs hierarchy for 
>   timekeeping, separate of clocksource

A long time ago I changed "current_clocksource" to
"timekeeping_clocksource" which made sense at the time .. I got push
back on that from John, and I think maybe Thomas ..


> - you use struct sys_device clocksource_sys_device from clocksource.c in 
>   timekeeping.c, which is inconsistent as well.
> 

This was on purpose , because I feel the sysfs organization benefits
when you have the clocksource users all in one place. Along with the
list of available clocksources .. I'm all ears if you have a better
suggestion ..

Daniel

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