Hi Arnd, > -----Original Message----- > From: arndbergmann@xxxxxxxxx [mailto:arndbergmann@xxxxxxxxx] On Behalf Of > Arnd Bergmann > Sent: Thursday, November 02, 2017 5:38 PM > To: Yamada, Masahiro/山田 真弘 <yamada.masahiro@xxxxxxxxxxxxx> > Cc: DTML <devicetree@xxxxxxxxxxxxxxx>; Rob Herring <robh@xxxxxxxxxx>; > linux-arch <linux-arch@xxxxxxxxxxxxxxx>; open list:RALINK MIPS > ARCHITECTURE <linux-mips@xxxxxxxxxxxxxx>; Linux Kbuild mailing list > <linux-kbuild@xxxxxxxxxxxxxxx>; Russell King <linux@xxxxxxxxxxxxxxx>; > Ralf Baechle <ralf@xxxxxxxxxxxxxx>; Pantelis Antoniou > <pantelis.antoniou@xxxxxxxxx>; Mark Rutland <mark.rutland@xxxxxxx>; > Frank Rowand <frowand.list@xxxxxxxxx>; Linux ARM > <linux-arm-kernel@xxxxxxxxxxxxxxxxxxx> > Subject: Re: [PATCH v2] kbuild: clean up *.dtb and *.dtb.S patterns from > top-level Makefile > > On Thu, Nov 2, 2017 at 3:51 AM, Masahiro Yamada > <yamada.masahiro@xxxxxxxxxxxxx> wrote: > > We need to add "clean-files" in Makfiles to clean up DT blobs, but we > > often miss to do so. > > > > Since there are no source files that end with .dtb or .dtb.S, so we > > can clean-up those files from the top-level Makefile. > > > > Signed-off-by: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx> > > Acked-by: Arnd Bergmann <arnd@xxxxxxxx> > > > On a (barely) related note, I'm struggling with another problem in the > way we handle > the .dtb files in arm64 when CONFIG_OF_ALL_DTBS is enabled: when building > on a lot of CPUs, we try to build the same files from both > arch/arm64/boot/dts/Makefile > and arch/arm64/boot/dts/*/Makefile, which then results in a failed > build when writing > the temporary files. > > I have come up with a workaround that I use locally, but it seemed too ugly > to > submit that for inclusion. Maybe you can come up with a nicer a solution > for > this as well? > > Arnd Yeah, I had also noticed this race problem on parallel building with CONFIG_OF_ALL_DTBS. I was planning to do it when I come up with a clean implementation. One idea is to handle dtb-y and CONFIG_OF_ALL_DTBS natively in scripts/Makefile.build or somewhere as scripts/Makefile.dtbinst already recognizes dtb-y as a special variable. ��.n��������+%������w��{.n�����{��F���{ay� ʇڙ���f���h������_�(�階�ݢj"��������G����?���&��
