Re: [PATCH v2 0/7] Rename DTB overlay source files

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On Sun, Nov 13, 2022 at 02:20:48PM +0200, Andy Shevchenko wrote:
> On Fri, Nov 11, 2022 at 03:05:20PM -0600, Andrew Davis wrote:
> > On 11/11/22 1:39 PM, Andy Shevchenko wrote:
> > > On Wed, Oct 26, 2022 at 09:11:21AM -0500, Rob Herring wrote:
> > > > On Mon, Oct 24, 2022 at 12:34 PM Andrew Davis <afd@xxxxxx> wrote:
> > > > > 
> > > > > Hello all,
> > > > > 
> > > > > This is a series based on my patch here[0]. As suggested by Rob
> > > > > I've resurrected Frank's patch and appended it to mine as a series.
> > > > > 
> > > > > First patch here is my original patch, 3rd is Frank's patch but with
> > > > > the unittest changes pulled out into the 2nd patch. That was re-worked
> > > > > moving the source building macro into scripts/Makefile.lib.
> > > > > 
> > > > > Patches 4, 5, and 6 are an attempt at renaming all the existing DTB
> > > > > overlays. Split out by platform so they could be taken by platform
> > > > > maintainers or if easier ACK'd here and taken all together.
> > > > > 
> > > > > This should cover all the DTB overlays so we can remove the old .dts
> > > > > rule for overlays and make .dtso the only supported way, let me know
> > > > > if we want that this cycle and I can post that too.
> > > > > 
> > > > > Thanks,
> > > > > Andrew
> > > > > 
> > > > > Changes from v1[1]:
> > > > >   - Added patch to rename pi433 overlay.
> > > > >   - Cleaned wording on patch 4-6.
> > > > >   - Collected some ACKs
> > > > > 
> > > > > [0] https://www.spinics.net/lists/kernel/msg4548509.html
> > > > > [1] https://www.spinics.net/lists/arm-kernel/msg1020165.html
> > > > > 
> > > > > Andrew Davis (6):
> > > > >    kbuild: Allow DTB overlays to built from .dtso named source files
> > > > >    kbuild: Allow DTB overlays to built into .dtso.S files
> > > > >    arm64: dts: freescale: Rename DTB overlay source files from .dts to
> > > > >      .dtso
> > > > >    arm64: dts: renesas: Rename DTB overlay source files from .dts to
> > > > >      .dtso
> > > > >    arm64: dts: xilinx: Rename DTB overlay source files from .dts to .dtso
> > > > >    staging: pi433: overlay: Rename overlay source file from .dts to .dtso
> > > > > 
> > > > > Frank Rowand (1):
> > > > >    of: overlay: rename overlay source files from .dts to .dtso
> > > > 
> > > > I've applied patches 1-3 and 7. I'll send a PR for the branch to the
> > > > platform maintainers after a few days in linux-next.
> > > 
> > > The patch
> > > 
> > > commit 941214a512d8c80d47e720c17ec17e8539175e93
> > > Author: Andrew Davis <afd@xxxxxx>
> > > Date:   Mon Oct 24 12:34:29 2022 -0500
> > > 
> > >      kbuild: Allow DTB overlays to built into .dtbo.S files
> > > 
> > > broke the build reproducibility / no-op builds.
> > > 
> > > Before:
> > >    2+ execution of `make` on non-changed tree did nothing
> > > 
> > > Now:
> > >    Each run of `make` (even without a single bit changed) restarts vmlinux
> > >    rebuild.
> > > 
> > > Please, revert or fix.
> > > 
> > 
> > I do not see this behavior. What config are you using?
> > 
> > Not sure how this patch could be the root cause, it only adds
> > a build target/rule, but doesn't actually use it anywhere yet..
> 
> For your reference I started with this one [1].
> 
> When I bisected, I just answered with defaults on whatever `make` told me at
> the configuration stage.
> 
> The actual `make` command I used:
> 
> 	make O=/path/to/the/result W=1 C=1 CF=-D__CHECK_ENDIAN__ -j64
> 
> But there is nothing that can affect the described issue.

Actually, O= might affect which Makefile is used and how.
The C=, CF= are sparse flags, W= is just warning level.

> [1]: https://p.defau.lt/?ZSOdGnNxF9v9AQtrfDo_KQ

-- 
With Best Regards,
Andy Shevchenko





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