linux-kernel - Re: latest list of unused Kconfig variables

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Message-ID: <alpine.LFD.1.00.0802131250120.25604@localhost.localdomain>
Date:	Wed, 13 Feb 2008 12:58:23 -0500 (EST)
From:	"Robert P. J. Day" <rpjday@...shcourse.ca>
To:	Sam Ravnborg <sam@...nborg.org>
cc:	Josh Boyer <jwboyer@...il.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Alexander Viro <viro@...iv.linux.org.uk>
Subject: Re: latest list of unused Kconfig variables

On Wed, 13 Feb 2008, Sam Ravnborg wrote:

> On Wed, Feb 13, 2008 at 10:44:27AM -0500, Robert P. J. Day wrote:
> > On Wed, 13 Feb 2008, Josh Boyer wrote:
> >
> > > OK.  Well all of your hits for 405EX, 440GRX, 440SPe, and
> > > WANT_DEVICE_TREE in arch/powerpc seem bogus.  I dunno if you prune
> > > those when reported or not.
> >
> > not normally, but i don't know what you mean by "bogus":
> >
> >   $ grep -r "config 405EX" *
> >   arch/powerpc/platforms/40x/Kconfig:config 405EX
> >   $
> >
> >   $ grep -r CONFIG_405EX *
> >   arch/powerpc/configs/makalu_defconfig:CONFIG_405EX=y
> >   arch/powerpc/configs/kilauea_defconfig:CONFIG_405EX=y
> >   $
>
> $ git grep 405EX | grep select
> arch/powerpc/platforms/40x/Kconfig:     select 405EX
> arch/powerpc/platforms/40x/Kconfig:     select 405EX
>
> So it is used.

ok, i see the flaw in my logic.  the Kconfig variable 405EX isn't
tested *directly* by anyone, it's simply used to further "select"
other variables, which my script doesn't take into account.

  config 405EX
        bool
        select IBM_NEW_EMAC_EMAC4
        select IBM_NEW_EMAC_RGMII

i don't think i'm quite ready to add that logic to a simple scanning
script.

oh, well.

rday
--

========================================================================
Robert P. J. Day
Linux Consulting, Training and Annoying Kernel Pedantry:
    Have classroom, will lecture.

http://crashcourse.ca                          Waterloo, Ontario, CANADA
========================================================================
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