linux-kernel - RE: [PATCH 2/2] Kbuild: Use dtc's -d (dependency) option

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Date:	Tue, 17 Jan 2012 13:26:06 -0500
From:	Mark Salter <msalter@...hat.com>
To:	Stephen Warren <swarren@...dia.com>
Cc:	Michal Marek <mmarek@...e.cz>, Jon Loeliger <jdl@....com>,
	David Gibson <david@...son.dropbear.id.au>,
	Russell King <linux@....linux.org.uk>,
	Aurelien Jacquiot <a-jacquiot@...com>,
	Michal Simek <monstr@...str.eu>,
	Jonas Bonn <jonas@...thpole.se>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Paul Mackerras <paulus@...ba.org>,
	Grant Likely <grant.likely@...retlab.ca>,
	Rob Herring <rob.herring@...xeda.com>,
	Arnd Bergmann <arnd@...db.de>,
	"linux-kbuild@...r.kernel.org" <linux-kbuild@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-c6x-dev@...ux-c6x.org" <linux-c6x-dev@...ux-c6x.org>,
	"microblaze-uclinux@...e.uq.edu.au" 
	<microblaze-uclinux@...e.uq.edu.au>,
	"linux@...nrisc.net" <linux@...nrisc.net>,
	"linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>,
	Devicetree Discuss <devicetree-discuss@...ts.ozlabs.org>
Subject: RE: [PATCH 2/2] Kbuild: Use dtc's -d (dependency) option

On Tue, 2012-01-17 at 09:20 -0800, Stephen Warren wrote:
> Michal Marek wrote at Saturday, January 14, 2012 3:51 PM:
> > On 11.1.2012 20:36, Mark Salter wrote:
> > > On Mon, 2012-01-09 at 11:38 -0700, Stephen Warren wrote:
> > >> This hooks dtc into Kbuild's dependency system.
> > >>
> > >> Thus, for example, "make dtbs" will rebuild tegra-harmony.dtb if only
> > >> tegra20.dtsi has changed yet tegra-harmony.dts has not. The previous
> > >> lack of this feature recently caused me to have very confusing "git
> > >> bisect" results.
> > >>
> > >> For ARM, it's obvious what to add to $(targets). I'm not familiar enough
> > >> with other architectures to know what to add there. Powerpc appears to
> > >> already add various .dtb files into $(targets), but the other archs may
> > >> need something added to $(targets) to work.
> > >>
> > >> Signed-off-by: Stephen Warren <swarren@...dia.com>
> > >>
> > >
> > > Acked-by: Mark Salter <msalter@...hat.com>
> > >
> > > For the arch/c6x bit.
> > 
> > As the C6X port has been merged in this merge window, I can't easily
> > apply this patch to my kbuild branch and at the same time please Linus
> > by basing the pull request on a tagged release. So I'm going to drop the
> > arch/c6x part to keep the kbuild branch "pretty" and let either Mark or
> > Stephen send the patch to Linus directly, once he has merged the kbuild
> > branch. Would that work?
> 
> I was assuming my patches were for 3.4 rather than 3.3, since it's pretty
> late for new features in 3.3. In that case, there wouldn't be an issue,
> right?
> 
> If you do want to go ahead and push my patches into 3.3, your proposal
> looks fine to me. Mark, do you want me to push the patch to Linus, or
> do you want to pick it up?

It would probably be best to keep it all together, but if there's a need
to break out c6x individually, I don't mind picking it up.

--Mark


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