linux-kernel - Re: [PATCH RFC 1/5] kconfig: implement weak reverse-dependencies

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Message-ID: <20130321102200.GB2341@netboy.at.omicron.at>
Date:	Thu, 21 Mar 2013 11:22:01 +0100
From:	Richard Cochran <richardcochran@...il.com>
To:	Konstantin Khlebnikov <khlebnikov@...nvz.org>
Cc:	Michal Marek <mmarek@...e.cz>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-kbuild@...r.kernel.org,
	Tejun Heo <tj@...nel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: [PATCH RFC 1/5] kconfig: implement weak reverse-dependencies

On Thu, Mar 21, 2013 at 12:22:57PM +0400, Konstantin Khlebnikov wrote:
> This patch adds new kind of dependencies between kconfig symbols,
> and new kconfig keyword 'apply' for them.
> 
> 'apply' works mostly like 'select', but it allows to disable target symbol.
> Thus target symbol will be either disabled or reachable from current symbol.
> 
> This method allows to implement optional dependencies without introducing new
> kconfig symbol for each pair of connected kconfig options.

I don't really understand what the point of this new keyword is, but I
wonder why you chose PTP Hardware Clocks as your Guinea pig.

As discussed on the netdev list [1][2], the consensus was that if a
MAC driver has a PHC, then it should always be compiled in.

And BTW, please CC netdev for PHC patches.

Thanks,
Richard

1. http://marc.info/?l=linux-netdev&m=135173341101960
2. http://www.spinics.net/lists/netdev/msg215379.html
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