| Message ID | 1507091240-12756-1-git-send-email-yamada.masahiro@socionext.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Wed, Oct 04, 2017 at 01:27:20PM +0900, Masahiro Yamada wrote: > The target "dtbs" should depend on "scripts" because it needs to > build dtc. The "prepare" target is unneeded here. > > Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> > --- > > arch/arm/Makefile | 2 +- > arch/arm64/Makefile | 2 +- > arch/nios2/Makefile | 2 +- > 3 files changed, 3 insertions(+), 3 deletions(-) > > diff --git a/arch/arm/Makefile b/arch/arm/Makefile > index 47d3a1a..cdb5b55 100644 > --- a/arch/arm/Makefile > +++ b/arch/arm/Makefile > @@ -342,7 +342,7 @@ $(INSTALL_TARGETS): > > PHONY += dtbs dtbs_install > > -dtbs: prepare scripts > +dtbs: scripts > $(Q)$(MAKE) $(build)=$(boot)/dts > > dtbs_install: > diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile > index 939b310..fd56fbc 100644 > --- a/arch/arm64/Makefile > +++ b/arch/arm64/Makefile > @@ -133,7 +133,7 @@ zinstall install: > > PHONY += dtbs dtbs_install > > -dtbs: prepare scripts > +dtbs: scripts > $(Q)$(MAKE) $(build)=$(boot)/dts > > dtbs_install: I think this is ok, although I was initially nervous about the possibility of the archprepare step having interactions with the dt-bindings headers. That doesn't appear to be the case, so for arm64: Acked-by: Will Deacon <will.deacon@arm.com> Will
On Wed, Oct 04, 2017 at 01:27:20PM +0900, Masahiro Yamada wrote: > The target "dtbs" should depend on "scripts" because it needs to > build dtc. The "prepare" target is unneeded here. Looks fine for ARM, as the only thing the dtbs should depend on is the kernel configuration (to decide which to build) and DT tooling. Acked-by: Russell King <rmk+kernel@armlinux.org.uk>
2017-10-04 13:27 GMT+09:00 Masahiro Yamada <yamada.masahiro@socionext.com>: > The target "dtbs" should depend on "scripts" because it needs to > build dtc. The "prepare" target is unneeded here. > > Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> > --- Applied to linux-kbuild/kbuild.
Hi. 2017-10-10 0:05 GMT+09:00 Russell King - ARM Linux <linux@armlinux.org.uk>: > On Wed, Oct 04, 2017 at 01:27:20PM +0900, Masahiro Yamada wrote: >> The target "dtbs" should depend on "scripts" because it needs to >> build dtc. The "prepare" target is unneeded here. > > Looks fine for ARM, as the only thing the dtbs should depend on is > the kernel configuration (to decide which to build) and DT tooling. > > Acked-by: Russell King <rmk+kernel@armlinux.org.uk> > > -- I found a potential issue on this because the default DTB install path depends on $(KERNELRELEASE). In top-level Makefile: export INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/dtbs/$(KERNELRELEASE) The include/config/kernel.release is created by "prepare3" target. If the dependency on "parepare" is removed, it is possible to run "make dtbs" and "make dtbs_install" without creating include/config/kernel.release. So, the $(KERNELRELEASE) could be empty when installing DTB. Maybe, drop this patch, or reduce the dependency to "parepare3"?
On Wed, Oct 25, 2017 at 12:40 AM, Masahiro Yamada <yamada.masahiro@socionext.com> wrote: > Hi. > > > 2017-10-10 0:05 GMT+09:00 Russell King - ARM Linux <linux@armlinux.org.uk>: >> On Wed, Oct 04, 2017 at 01:27:20PM +0900, Masahiro Yamada wrote: >>> The target "dtbs" should depend on "scripts" because it needs to >>> build dtc. The "prepare" target is unneeded here. >> >> Looks fine for ARM, as the only thing the dtbs should depend on is >> the kernel configuration (to decide which to build) and DT tooling. >> >> Acked-by: Russell King <rmk+kernel@armlinux.org.uk> >> >> -- > > > I found a potential issue on this > because the default DTB install path depends on $(KERNELRELEASE). > > > In top-level Makefile: > export INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/dtbs/$(KERNELRELEASE) > > > The include/config/kernel.release is created by "prepare3" target. > > If the dependency on "parepare" is removed, > it is possible to run "make dtbs" and "make dtbs_install" > without creating include/config/kernel.release. > > So, the $(KERNELRELEASE) could be empty when installing DTB. > > > Maybe, drop this patch, or reduce the dependency to "parepare3"? I was doing some work to get dtb builds to work without depending on $arch cross compiler and this patch fixes some of the issues. The dtbs_install target has the prepare dependency, so that should be sufficient and your patch should be fine. BTW, Based on prior discussion on "ARM: kbuild: Fix forced rebuild after 'make dtbs'" thread, prepare should not be needed just for $(KERNELRELEASE). Rob
2017-12-14 6:31 GMT+09:00 Rob Herring <robh@kernel.org>: > On Wed, Oct 25, 2017 at 12:40 AM, Masahiro Yamada > <yamada.masahiro@socionext.com> wrote: >> Hi. >> >> >> 2017-10-10 0:05 GMT+09:00 Russell King - ARM Linux <linux@armlinux.org.uk>: >>> On Wed, Oct 04, 2017 at 01:27:20PM +0900, Masahiro Yamada wrote: >>>> The target "dtbs" should depend on "scripts" because it needs to >>>> build dtc. The "prepare" target is unneeded here. >>> >>> Looks fine for ARM, as the only thing the dtbs should depend on is >>> the kernel configuration (to decide which to build) and DT tooling. >>> >>> Acked-by: Russell King <rmk+kernel@armlinux.org.uk> >>> >>> -- >> >> >> I found a potential issue on this >> because the default DTB install path depends on $(KERNELRELEASE). >> >> >> In top-level Makefile: >> export INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/dtbs/$(KERNELRELEASE) >> >> >> The include/config/kernel.release is created by "prepare3" target. >> >> If the dependency on "parepare" is removed, >> it is possible to run "make dtbs" and "make dtbs_install" >> without creating include/config/kernel.release. >> >> So, the $(KERNELRELEASE) could be empty when installing DTB. >> >> >> Maybe, drop this patch, or reduce the dependency to "parepare3"? > > I was doing some work to get dtb builds to work without depending on > $arch cross compiler and this patch fixes some of the issues. The > dtbs_install target has the prepare dependency, Which line? I checked arch/{arm,arm64,mips}/Makefile, but I did not see any dependency. > so that should be > sufficient and your patch should be fine. Generally, adding dependencies to install targets is dangerous because install targets are often invoked in root privilege. This is stated by, for example, commit 19514fc665ffbce624785f76ee7ad0ea6378a527 > BTW, Based on prior > discussion on "ARM: kbuild: Fix forced rebuild after 'make dtbs'" > thread, prepare should not be needed just for $(KERNELRELEASE). > > Rob No. If "prepare" target is dropped, you can run dtbs_install without include/config/kenrel.release
diff --git a/arch/arm/Makefile b/arch/arm/Makefile index 47d3a1a..cdb5b55 100644 --- a/arch/arm/Makefile +++ b/arch/arm/Makefile @@ -342,7 +342,7 @@ $(INSTALL_TARGETS): PHONY += dtbs dtbs_install -dtbs: prepare scripts +dtbs: scripts $(Q)$(MAKE) $(build)=$(boot)/dts dtbs_install: diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile index 939b310..fd56fbc 100644 --- a/arch/arm64/Makefile +++ b/arch/arm64/Makefile @@ -133,7 +133,7 @@ zinstall install: PHONY += dtbs dtbs_install -dtbs: prepare scripts +dtbs: scripts $(Q)$(MAKE) $(build)=$(boot)/dts dtbs_install: diff --git a/arch/nios2/Makefile b/arch/nios2/Makefile index 8673a79..abc3f5b 100644 --- a/arch/nios2/Makefile +++ b/arch/nios2/Makefile @@ -61,7 +61,7 @@ archclean: %.dtb: | scripts $(Q)$(MAKE) $(build)=$(nios2-boot) $(nios2-boot)/$@ -dtbs: +dtbs: scripts $(Q)$(MAKE) $(build)=$(nios2-boot) $(nios2-boot)/$@ $(BOOT_TARGETS): vmlinux
The target "dtbs" should depend on "scripts" because it needs to build dtc. The "prepare" target is unneeded here. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> --- arch/arm/Makefile | 2 +- arch/arm64/Makefile | 2 +- arch/nios2/Makefile | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-)