diff mbox series

[v2,1/2] kbuild: Always validate DT binding examples

Message ID 20200229003731.2728-1-robh@kernel.org (mailing list archive)
State New, archived
Headers show
Series [v2,1/2] kbuild: Always validate DT binding examples | expand

Commit Message

Rob Herring Feb. 29, 2020, 12:37 a.m. UTC
Most folks only run dt_binding_check on the single schema they care about
by setting DT_SCHEMA_FILES. That means example is only checked against
that one schema which is not always sufficient.

Let's address this by splitting processed-schema.yaml into 2 files: one
that's always all schemas for the examples and one that's just the schema
in DT_SCHEMA_FILES for dtbs.

Cc: Michal Marek <michal.lkml@markovi.net>
Cc: linux-kbuild@vger.kernel.org
Co-developed-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Rob Herring <robh@kernel.org>
---
Masahiro, given you pretty much re-wrote this, I added you as 
Co-developed-by.

Based on next/master

 Documentation/devicetree/bindings/.gitignore |  2 +-
 Documentation/devicetree/bindings/Makefile   | 22 +++++++++++++-------
 scripts/Makefile.lib                         |  3 ++-
 3 files changed, 17 insertions(+), 10 deletions(-)

Comments

Masahiro Yamada Feb. 29, 2020, 4:25 a.m. UTC | #1
Hi Rob,

On Sat, Feb 29, 2020 at 9:37 AM Rob Herring <robh@kernel.org> wrote:
>
> Most folks only run dt_binding_check on the single schema they care about
> by setting DT_SCHEMA_FILES. That means example is only checked against
> that one schema which is not always sufficient.
>
> Let's address this by splitting processed-schema.yaml into 2 files: one
> that's always all schemas for the examples and one that's just the schema
> in DT_SCHEMA_FILES for dtbs.
>
> Cc: Michal Marek <michal.lkml@markovi.net>
> Cc: linux-kbuild@vger.kernel.org
> Co-developed-by: Masahiro Yamada <masahiroy@kernel.org>
> Signed-off-by: Rob Herring <robh@kernel.org>
> ---
> Masahiro, given you pretty much re-wrote this, I added you as
> Co-developed-by.



I can apply both to my kbuild tree.

Or, if you want to apply them to your tree,
please add my
Acked-by: Masahiro Yamada <masahiroy@kernel.org>


Either way is fine.

Thanks.



>
> Based on next/master
>
>  Documentation/devicetree/bindings/.gitignore |  2 +-
>  Documentation/devicetree/bindings/Makefile   | 22 +++++++++++++-------
>  scripts/Makefile.lib                         |  3 ++-
>  3 files changed, 17 insertions(+), 10 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/.gitignore b/Documentation/devicetree/bindings/.gitignore
> index ef82fcfcccab..57afa1533a5f 100644
> --- a/Documentation/devicetree/bindings/.gitignore
> +++ b/Documentation/devicetree/bindings/.gitignore
> @@ -1,2 +1,2 @@
>  *.example.dts
> -processed-schema.yaml
> +processed-schema*.yaml
> diff --git a/Documentation/devicetree/bindings/Makefile b/Documentation/devicetree/bindings/Makefile
> index 646cb3525373..7c40d5ba1b51 100644
> --- a/Documentation/devicetree/bindings/Makefile
> +++ b/Documentation/devicetree/bindings/Makefile
> @@ -2,7 +2,6 @@
>  DT_DOC_CHECKER ?= dt-doc-validate
>  DT_EXTRACT_EX ?= dt-extract-example
>  DT_MK_SCHEMA ?= dt-mk-schema
> -DT_MK_SCHEMA_FLAGS := $(if $(DT_SCHEMA_FILES), -u)
>
>  quiet_cmd_chk_binding = CHKDT   $(patsubst $(srctree)/%,%,$<)
>        cmd_chk_binding = $(DT_DOC_CHECKER) -u $(srctree)/$(src) $< ; \
> @@ -11,26 +10,33 @@ quiet_cmd_chk_binding = CHKDT   $(patsubst $(srctree)/%,%,$<)
>  $(obj)/%.example.dts: $(src)/%.yaml FORCE
>         $(call if_changed,chk_binding)
>
> -DT_TMP_SCHEMA := processed-schema.yaml
> +# Use full schemas when checking %.example.dts
> +DT_TMP_SCHEMA := $(obj)/processed-schema-examples.yaml
>
>  quiet_cmd_mk_schema = SCHEMA  $@
>        cmd_mk_schema = $(DT_MK_SCHEMA) $(DT_MK_SCHEMA_FLAGS) -o $@ $(real-prereqs)
>
> -DT_DOCS = $(shell \
> +DT_DOCS = $(addprefix $(src)/, \
> +       $(shell \
>         cd $(srctree)/$(src) && \
>         find * \( -name '*.yaml' ! \
> -               -name $(DT_TMP_SCHEMA) ! \
> +               -name 'processed-schema*' ! \
>                 -name '*.example.dt.yaml' \) \
> -       )
> +       ))
>
> -DT_SCHEMA_FILES ?= $(addprefix $(src)/,$(DT_DOCS))
> +DT_SCHEMA_FILES ?= $(DT_DOCS)
>
>  ifeq ($(CHECK_DTBS),)
>  extra-y += $(patsubst $(src)/%.yaml,%.example.dts, $(DT_SCHEMA_FILES))
>  extra-y += $(patsubst $(src)/%.yaml,%.example.dt.yaml, $(DT_SCHEMA_FILES))
> +extra-y += processed-schema-examples.yaml
> +
> +$(obj)/processed-schema-examples.yaml: $(DT_DOCS) FORCE
> +       $(call if_changed,mk_schema)
>  endif
>
> -$(obj)/$(DT_TMP_SCHEMA): $(DT_SCHEMA_FILES) FORCE
> +$(obj)/processed-schema.yaml: DT_MK_SCHEMA_FLAGS := -u
> +$(obj)/processed-schema.yaml: $(DT_SCHEMA_FILES) FORCE
>         $(call if_changed,mk_schema)
>
> -extra-y += $(DT_TMP_SCHEMA)
> +extra-y += processed-schema.yaml
> diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
> index f5ff506e4a24..b12dd5ba4896 100644
> --- a/scripts/Makefile.lib
> +++ b/scripts/Makefile.lib
> @@ -307,7 +307,8 @@ $(obj)/%.dtb: $(src)/%.dts $(DTC) FORCE
>
>  DT_CHECKER ?= dt-validate
>  DT_BINDING_DIR := Documentation/devicetree/bindings
> -DT_TMP_SCHEMA := $(objtree)/$(DT_BINDING_DIR)/processed-schema.yaml
> +# DT_TMP_SCHEMA may be overridden from Documentation/devicetree/bindings/Makefile
> +DT_TMP_SCHEMA ?= $(objtree)/$(DT_BINDING_DIR)/processed-schema.yaml
>
>  quiet_cmd_dtb_check =  CHECK   $@
>        cmd_dtb_check =  $(DT_CHECKER) -u $(srctree)/$(DT_BINDING_DIR) -p $(DT_TMP_SCHEMA) $@
> --
> 2.20.1
>
Rob Herring March 2, 2020, 4:06 p.m. UTC | #2
On Fri, Feb 28, 2020 at 10:25 PM Masahiro Yamada <masahiroy@kernel.org> wrote:
>
> Hi Rob,
>
> On Sat, Feb 29, 2020 at 9:37 AM Rob Herring <robh@kernel.org> wrote:
> >
> > Most folks only run dt_binding_check on the single schema they care about
> > by setting DT_SCHEMA_FILES. That means example is only checked against
> > that one schema which is not always sufficient.
> >
> > Let's address this by splitting processed-schema.yaml into 2 files: one
> > that's always all schemas for the examples and one that's just the schema
> > in DT_SCHEMA_FILES for dtbs.
> >
> > Cc: Michal Marek <michal.lkml@markovi.net>
> > Cc: linux-kbuild@vger.kernel.org
> > Co-developed-by: Masahiro Yamada <masahiroy@kernel.org>
> > Signed-off-by: Rob Herring <robh@kernel.org>
> > ---
> > Masahiro, given you pretty much re-wrote this, I added you as
> > Co-developed-by.
>
>
>
> I can apply both to my kbuild tree.

Please apply to your tree.

Rob

>
> Or, if you want to apply them to your tree,
> please add my
> Acked-by: Masahiro Yamada <masahiroy@kernel.org>
>
>
> Either way is fine.
>
> Thanks.
>
>
>
> >
> > Based on next/master
> >
> >  Documentation/devicetree/bindings/.gitignore |  2 +-
> >  Documentation/devicetree/bindings/Makefile   | 22 +++++++++++++-------
> >  scripts/Makefile.lib                         |  3 ++-
> >  3 files changed, 17 insertions(+), 10 deletions(-)
> >
> > diff --git a/Documentation/devicetree/bindings/.gitignore b/Documentation/devicetree/bindings/.gitignore
> > index ef82fcfcccab..57afa1533a5f 100644
> > --- a/Documentation/devicetree/bindings/.gitignore
> > +++ b/Documentation/devicetree/bindings/.gitignore
> > @@ -1,2 +1,2 @@
> >  *.example.dts
> > -processed-schema.yaml
> > +processed-schema*.yaml
> > diff --git a/Documentation/devicetree/bindings/Makefile b/Documentation/devicetree/bindings/Makefile
> > index 646cb3525373..7c40d5ba1b51 100644
> > --- a/Documentation/devicetree/bindings/Makefile
> > +++ b/Documentation/devicetree/bindings/Makefile
> > @@ -2,7 +2,6 @@
> >  DT_DOC_CHECKER ?= dt-doc-validate
> >  DT_EXTRACT_EX ?= dt-extract-example
> >  DT_MK_SCHEMA ?= dt-mk-schema
> > -DT_MK_SCHEMA_FLAGS := $(if $(DT_SCHEMA_FILES), -u)
> >
> >  quiet_cmd_chk_binding = CHKDT   $(patsubst $(srctree)/%,%,$<)
> >        cmd_chk_binding = $(DT_DOC_CHECKER) -u $(srctree)/$(src) $< ; \
> > @@ -11,26 +10,33 @@ quiet_cmd_chk_binding = CHKDT   $(patsubst $(srctree)/%,%,$<)
> >  $(obj)/%.example.dts: $(src)/%.yaml FORCE
> >         $(call if_changed,chk_binding)
> >
> > -DT_TMP_SCHEMA := processed-schema.yaml
> > +# Use full schemas when checking %.example.dts
> > +DT_TMP_SCHEMA := $(obj)/processed-schema-examples.yaml
> >
> >  quiet_cmd_mk_schema = SCHEMA  $@
> >        cmd_mk_schema = $(DT_MK_SCHEMA) $(DT_MK_SCHEMA_FLAGS) -o $@ $(real-prereqs)
> >
> > -DT_DOCS = $(shell \
> > +DT_DOCS = $(addprefix $(src)/, \
> > +       $(shell \
> >         cd $(srctree)/$(src) && \
> >         find * \( -name '*.yaml' ! \
> > -               -name $(DT_TMP_SCHEMA) ! \
> > +               -name 'processed-schema*' ! \
> >                 -name '*.example.dt.yaml' \) \
> > -       )
> > +       ))
> >
> > -DT_SCHEMA_FILES ?= $(addprefix $(src)/,$(DT_DOCS))
> > +DT_SCHEMA_FILES ?= $(DT_DOCS)
> >
> >  ifeq ($(CHECK_DTBS),)
> >  extra-y += $(patsubst $(src)/%.yaml,%.example.dts, $(DT_SCHEMA_FILES))
> >  extra-y += $(patsubst $(src)/%.yaml,%.example.dt.yaml, $(DT_SCHEMA_FILES))
> > +extra-y += processed-schema-examples.yaml
> > +
> > +$(obj)/processed-schema-examples.yaml: $(DT_DOCS) FORCE
> > +       $(call if_changed,mk_schema)
> >  endif
> >
> > -$(obj)/$(DT_TMP_SCHEMA): $(DT_SCHEMA_FILES) FORCE
> > +$(obj)/processed-schema.yaml: DT_MK_SCHEMA_FLAGS := -u
> > +$(obj)/processed-schema.yaml: $(DT_SCHEMA_FILES) FORCE
> >         $(call if_changed,mk_schema)
> >
> > -extra-y += $(DT_TMP_SCHEMA)
> > +extra-y += processed-schema.yaml
> > diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
> > index f5ff506e4a24..b12dd5ba4896 100644
> > --- a/scripts/Makefile.lib
> > +++ b/scripts/Makefile.lib
> > @@ -307,7 +307,8 @@ $(obj)/%.dtb: $(src)/%.dts $(DTC) FORCE
> >
> >  DT_CHECKER ?= dt-validate
> >  DT_BINDING_DIR := Documentation/devicetree/bindings
> > -DT_TMP_SCHEMA := $(objtree)/$(DT_BINDING_DIR)/processed-schema.yaml
> > +# DT_TMP_SCHEMA may be overridden from Documentation/devicetree/bindings/Makefile
> > +DT_TMP_SCHEMA ?= $(objtree)/$(DT_BINDING_DIR)/processed-schema.yaml
> >
> >  quiet_cmd_dtb_check =  CHECK   $@
> >        cmd_dtb_check =  $(DT_CHECKER) -u $(srctree)/$(DT_BINDING_DIR) -p $(DT_TMP_SCHEMA) $@
> > --
> > 2.20.1
> >
>
>
> --
> Best Regards
> Masahiro Yamada
Masahiro Yamada March 3, 2020, 1:45 p.m. UTC | #3
On Tue, Mar 3, 2020 at 1:06 AM Rob Herring <robh@kernel.org> wrote:
>
> On Fri, Feb 28, 2020 at 10:25 PM Masahiro Yamada <masahiroy@kernel.org> wrote:
> >
> > Hi Rob,
> >
> > On Sat, Feb 29, 2020 at 9:37 AM Rob Herring <robh@kernel.org> wrote:
> > >
> > > Most folks only run dt_binding_check on the single schema they care about
> > > by setting DT_SCHEMA_FILES. That means example is only checked against
> > > that one schema which is not always sufficient.
> > >
> > > Let's address this by splitting processed-schema.yaml into 2 files: one
> > > that's always all schemas for the examples and one that's just the schema
> > > in DT_SCHEMA_FILES for dtbs.
> > >
> > > Cc: Michal Marek <michal.lkml@markovi.net>
> > > Cc: linux-kbuild@vger.kernel.org
> > > Co-developed-by: Masahiro Yamada <masahiroy@kernel.org>
> > > Signed-off-by: Rob Herring <robh@kernel.org>
> > > ---
> > > Masahiro, given you pretty much re-wrote this, I added you as
> > > Co-developed-by.
> >
> >
> >
> > I can apply both to my kbuild tree.
>
> Please apply to your tree.


Done.
Thanks.
Laurent Pinchart April 21, 2020, 10:07 a.m. UTC | #4
Hi Rob,

On Fri, Feb 28, 2020 at 06:37:30PM -0600, Rob Herring wrote:
> Most folks only run dt_binding_check on the single schema they care about
> by setting DT_SCHEMA_FILES. That means example is only checked against
> that one schema which is not always sufficient.
> 
> Let's address this by splitting processed-schema.yaml into 2 files: one
> that's always all schemas for the examples and one that's just the schema
> in DT_SCHEMA_FILES for dtbs.

This broke

make DT_SCHEMA_FILES=Documentation/devicetree/.. dt_binding_check

for me :-(

make[1]: Entering directory '/home/laurent/src/linux/output/arm32'
make[2]: execvp: /bin/sh: Argument list too long
make[2]: *** [/home/laurent/src/linux/Documentation/devicetree/bindings/Makefile:35: Documentation/devicetree/bindings/processed-schema-examples.yaml] Error 127
make[1]: *** [/home/laurent/src/linux/Makefile:1296: dt_binding_check] Error 2
make[1]: Leaving directory '/home/laurent/src/linux/output/arm32'
make: *** [Makefile:180: sub-make] Error 2

Before the patch, dt-mk-schema was called with DT_SCHEMA_FILES only, and
it is now called with DT_DOCS unconditionally.

> Cc: Michal Marek <michal.lkml@markovi.net>
> Cc: linux-kbuild@vger.kernel.org
> Co-developed-by: Masahiro Yamada <masahiroy@kernel.org>
> Signed-off-by: Rob Herring <robh@kernel.org>
> ---
> Masahiro, given you pretty much re-wrote this, I added you as 
> Co-developed-by.
> 
> Based on next/master
> 
>  Documentation/devicetree/bindings/.gitignore |  2 +-
>  Documentation/devicetree/bindings/Makefile   | 22 +++++++++++++-------
>  scripts/Makefile.lib                         |  3 ++-
>  3 files changed, 17 insertions(+), 10 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/.gitignore b/Documentation/devicetree/bindings/.gitignore
> index ef82fcfcccab..57afa1533a5f 100644
> --- a/Documentation/devicetree/bindings/.gitignore
> +++ b/Documentation/devicetree/bindings/.gitignore
> @@ -1,2 +1,2 @@
>  *.example.dts
> -processed-schema.yaml
> +processed-schema*.yaml
> diff --git a/Documentation/devicetree/bindings/Makefile b/Documentation/devicetree/bindings/Makefile
> index 646cb3525373..7c40d5ba1b51 100644
> --- a/Documentation/devicetree/bindings/Makefile
> +++ b/Documentation/devicetree/bindings/Makefile
> @@ -2,7 +2,6 @@
>  DT_DOC_CHECKER ?= dt-doc-validate
>  DT_EXTRACT_EX ?= dt-extract-example
>  DT_MK_SCHEMA ?= dt-mk-schema
> -DT_MK_SCHEMA_FLAGS := $(if $(DT_SCHEMA_FILES), -u)
>  
>  quiet_cmd_chk_binding = CHKDT   $(patsubst $(srctree)/%,%,$<)
>        cmd_chk_binding = $(DT_DOC_CHECKER) -u $(srctree)/$(src) $< ; \
> @@ -11,26 +10,33 @@ quiet_cmd_chk_binding = CHKDT   $(patsubst $(srctree)/%,%,$<)
>  $(obj)/%.example.dts: $(src)/%.yaml FORCE
>  	$(call if_changed,chk_binding)
>  
> -DT_TMP_SCHEMA := processed-schema.yaml
> +# Use full schemas when checking %.example.dts
> +DT_TMP_SCHEMA := $(obj)/processed-schema-examples.yaml
>  
>  quiet_cmd_mk_schema = SCHEMA  $@
>        cmd_mk_schema = $(DT_MK_SCHEMA) $(DT_MK_SCHEMA_FLAGS) -o $@ $(real-prereqs)
>  
> -DT_DOCS = $(shell \
> +DT_DOCS = $(addprefix $(src)/, \
> +	$(shell \
>  	cd $(srctree)/$(src) && \
>  	find * \( -name '*.yaml' ! \
> -		-name $(DT_TMP_SCHEMA) ! \
> +		-name 'processed-schema*' ! \
>  		-name '*.example.dt.yaml' \) \
> -	)
> +	))
>  
> -DT_SCHEMA_FILES ?= $(addprefix $(src)/,$(DT_DOCS))
> +DT_SCHEMA_FILES ?= $(DT_DOCS)
>  
>  ifeq ($(CHECK_DTBS),)
>  extra-y += $(patsubst $(src)/%.yaml,%.example.dts, $(DT_SCHEMA_FILES))
>  extra-y += $(patsubst $(src)/%.yaml,%.example.dt.yaml, $(DT_SCHEMA_FILES))
> +extra-y += processed-schema-examples.yaml
> +
> +$(obj)/processed-schema-examples.yaml: $(DT_DOCS) FORCE
> +	$(call if_changed,mk_schema)
>  endif
>  
> -$(obj)/$(DT_TMP_SCHEMA): $(DT_SCHEMA_FILES) FORCE
> +$(obj)/processed-schema.yaml: DT_MK_SCHEMA_FLAGS := -u
> +$(obj)/processed-schema.yaml: $(DT_SCHEMA_FILES) FORCE
>  	$(call if_changed,mk_schema)
>  
> -extra-y += $(DT_TMP_SCHEMA)
> +extra-y += processed-schema.yaml
> diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
> index f5ff506e4a24..b12dd5ba4896 100644
> --- a/scripts/Makefile.lib
> +++ b/scripts/Makefile.lib
> @@ -307,7 +307,8 @@ $(obj)/%.dtb: $(src)/%.dts $(DTC) FORCE
>  
>  DT_CHECKER ?= dt-validate
>  DT_BINDING_DIR := Documentation/devicetree/bindings
> -DT_TMP_SCHEMA := $(objtree)/$(DT_BINDING_DIR)/processed-schema.yaml
> +# DT_TMP_SCHEMA may be overridden from Documentation/devicetree/bindings/Makefile
> +DT_TMP_SCHEMA ?= $(objtree)/$(DT_BINDING_DIR)/processed-schema.yaml
>  
>  quiet_cmd_dtb_check =	CHECK   $@
>        cmd_dtb_check =	$(DT_CHECKER) -u $(srctree)/$(DT_BINDING_DIR) -p $(DT_TMP_SCHEMA) $@
Masahiro Yamada April 21, 2020, 10:45 a.m. UTC | #5
On Tue, Apr 21, 2020 at 7:08 PM Laurent Pinchart
<laurent.pinchart@ideasonboard.com> wrote:
>
> Hi Rob,
>
> On Fri, Feb 28, 2020 at 06:37:30PM -0600, Rob Herring wrote:
> > Most folks only run dt_binding_check on the single schema they care about
> > by setting DT_SCHEMA_FILES. That means example is only checked against
> > that one schema which is not always sufficient.
> >
> > Let's address this by splitting processed-schema.yaml into 2 files: one
> > that's always all schemas for the examples and one that's just the schema
> > in DT_SCHEMA_FILES for dtbs.
>
> This broke
>
> make DT_SCHEMA_FILES=Documentation/devicetree/.. dt_binding_check

What is intended by
"DT_SCHEMA_FILES=Documentation/devicetree/.."  ?




>
> for me :-(
>
> make[1]: Entering directory '/home/laurent/src/linux/output/arm32'
> make[2]: execvp: /bin/sh: Argument list too long
> make[2]: *** [/home/laurent/src/linux/Documentation/devicetree/bindings/Makefile:35: Documentation/devicetree/bindings/processed-schema-examples.yaml] Error 127
> make[1]: *** [/home/laurent/src/linux/Makefile:1296: dt_binding_check] Error 2
> make[1]: Leaving directory '/home/laurent/src/linux/output/arm32'
> make: *** [Makefile:180: sub-make] Error 2
>
> Before the patch, dt-mk-schema was called with DT_SCHEMA_FILES only, and
> it is now called with DT_DOCS unconditionally.
>
> > Cc: Michal Marek <michal.lkml@markovi.net>
> > Cc: linux-kbuild@vger.kernel.org
> > Co-developed-by: Masahiro Yamada <masahiroy@kernel.org>
> > Signed-off-by: Rob Herring <robh@kernel.org>
> > ---
> > Masahiro, given you pretty much re-wrote this, I added you as
> > Co-developed-by.
> >
> > Based on next/master
> >
> >  Documentation/devicetree/bindings/.gitignore |  2 +-
> >  Documentation/devicetree/bindings/Makefile   | 22 +++++++++++++-------
> >  scripts/Makefile.lib                         |  3 ++-
> >  3 files changed, 17 insertions(+), 10 deletions(-)
> >
> > diff --git a/Documentation/devicetree/bindings/.gitignore b/Documentation/devicetree/bindings/.gitignore
> > index ef82fcfcccab..57afa1533a5f 100644
> > --- a/Documentation/devicetree/bindings/.gitignore
> > +++ b/Documentation/devicetree/bindings/.gitignore
> > @@ -1,2 +1,2 @@
> >  *.example.dts
> > -processed-schema.yaml
> > +processed-schema*.yaml
> > diff --git a/Documentation/devicetree/bindings/Makefile b/Documentation/devicetree/bindings/Makefile
> > index 646cb3525373..7c40d5ba1b51 100644
> > --- a/Documentation/devicetree/bindings/Makefile
> > +++ b/Documentation/devicetree/bindings/Makefile
> > @@ -2,7 +2,6 @@
> >  DT_DOC_CHECKER ?= dt-doc-validate
> >  DT_EXTRACT_EX ?= dt-extract-example
> >  DT_MK_SCHEMA ?= dt-mk-schema
> > -DT_MK_SCHEMA_FLAGS := $(if $(DT_SCHEMA_FILES), -u)
> >
> >  quiet_cmd_chk_binding = CHKDT   $(patsubst $(srctree)/%,%,$<)
> >        cmd_chk_binding = $(DT_DOC_CHECKER) -u $(srctree)/$(src) $< ; \
> > @@ -11,26 +10,33 @@ quiet_cmd_chk_binding = CHKDT   $(patsubst $(srctree)/%,%,$<)
> >  $(obj)/%.example.dts: $(src)/%.yaml FORCE
> >       $(call if_changed,chk_binding)
> >
> > -DT_TMP_SCHEMA := processed-schema.yaml
> > +# Use full schemas when checking %.example.dts
> > +DT_TMP_SCHEMA := $(obj)/processed-schema-examples.yaml
> >
> >  quiet_cmd_mk_schema = SCHEMA  $@
> >        cmd_mk_schema = $(DT_MK_SCHEMA) $(DT_MK_SCHEMA_FLAGS) -o $@ $(real-prereqs)
> >
> > -DT_DOCS = $(shell \
> > +DT_DOCS = $(addprefix $(src)/, \
> > +     $(shell \
> >       cd $(srctree)/$(src) && \
> >       find * \( -name '*.yaml' ! \
> > -             -name $(DT_TMP_SCHEMA) ! \
> > +             -name 'processed-schema*' ! \
> >               -name '*.example.dt.yaml' \) \
> > -     )
> > +     ))
> >
> > -DT_SCHEMA_FILES ?= $(addprefix $(src)/,$(DT_DOCS))
> > +DT_SCHEMA_FILES ?= $(DT_DOCS)
> >
> >  ifeq ($(CHECK_DTBS),)
> >  extra-y += $(patsubst $(src)/%.yaml,%.example.dts, $(DT_SCHEMA_FILES))
> >  extra-y += $(patsubst $(src)/%.yaml,%.example.dt.yaml, $(DT_SCHEMA_FILES))
> > +extra-y += processed-schema-examples.yaml
> > +
> > +$(obj)/processed-schema-examples.yaml: $(DT_DOCS) FORCE
> > +     $(call if_changed,mk_schema)
> >  endif
> >
> > -$(obj)/$(DT_TMP_SCHEMA): $(DT_SCHEMA_FILES) FORCE
> > +$(obj)/processed-schema.yaml: DT_MK_SCHEMA_FLAGS := -u
> > +$(obj)/processed-schema.yaml: $(DT_SCHEMA_FILES) FORCE
> >       $(call if_changed,mk_schema)
> >
> > -extra-y += $(DT_TMP_SCHEMA)
> > +extra-y += processed-schema.yaml
> > diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
> > index f5ff506e4a24..b12dd5ba4896 100644
> > --- a/scripts/Makefile.lib
> > +++ b/scripts/Makefile.lib
> > @@ -307,7 +307,8 @@ $(obj)/%.dtb: $(src)/%.dts $(DTC) FORCE
> >
> >  DT_CHECKER ?= dt-validate
> >  DT_BINDING_DIR := Documentation/devicetree/bindings
> > -DT_TMP_SCHEMA := $(objtree)/$(DT_BINDING_DIR)/processed-schema.yaml
> > +# DT_TMP_SCHEMA may be overridden from Documentation/devicetree/bindings/Makefile
> > +DT_TMP_SCHEMA ?= $(objtree)/$(DT_BINDING_DIR)/processed-schema.yaml
> >
> >  quiet_cmd_dtb_check =        CHECK   $@
> >        cmd_dtb_check =        $(DT_CHECKER) -u $(srctree)/$(DT_BINDING_DIR) -p $(DT_TMP_SCHEMA) $@
>
> --
> Regards,
>
> Laurent Pinchart
Laurent Pinchart April 21, 2020, 11:05 a.m. UTC | #6
Hi Yamada-san,

On Tue, Apr 21, 2020 at 07:45:05PM +0900, Masahiro Yamada wrote:
> On Tue, Apr 21, 2020 at 7:08 PM Laurent Pinchart wrote:
> > On Fri, Feb 28, 2020 at 06:37:30PM -0600, Rob Herring wrote:
> > > Most folks only run dt_binding_check on the single schema they care about
> > > by setting DT_SCHEMA_FILES. That means example is only checked against
> > > that one schema which is not always sufficient.
> > >
> > > Let's address this by splitting processed-schema.yaml into 2 files: one
> > > that's always all schemas for the examples and one that's just the schema
> > > in DT_SCHEMA_FILES for dtbs.
> >
> > This broke
> >
> > make DT_SCHEMA_FILES=Documentation/devicetree/.. dt_binding_check
> 
> What is intended by
> "DT_SCHEMA_FILES=Documentation/devicetree/.."  ?

My bad, I forgot to write that ... is the continuation of the string.
It's any yaml schema file that has an example.

> > for me :-(
> >
> > make[1]: Entering directory '/home/laurent/src/linux/output/arm32'
> > make[2]: execvp: /bin/sh: Argument list too long
> > make[2]: *** [/home/laurent/src/linux/Documentation/devicetree/bindings/Makefile:35: Documentation/devicetree/bindings/processed-schema-examples.yaml] Error 127
> > make[1]: *** [/home/laurent/src/linux/Makefile:1296: dt_binding_check] Error 2
> > make[1]: Leaving directory '/home/laurent/src/linux/output/arm32'
> > make: *** [Makefile:180: sub-make] Error 2
> >
> > Before the patch, dt-mk-schema was called with DT_SCHEMA_FILES only, and
> > it is now called with DT_DOCS unconditionally.
> >
> > > Cc: Michal Marek <michal.lkml@markovi.net>
> > > Cc: linux-kbuild@vger.kernel.org
> > > Co-developed-by: Masahiro Yamada <masahiroy@kernel.org>
> > > Signed-off-by: Rob Herring <robh@kernel.org>
> > > ---
> > > Masahiro, given you pretty much re-wrote this, I added you as
> > > Co-developed-by.
> > >
> > > Based on next/master
> > >
> > >  Documentation/devicetree/bindings/.gitignore |  2 +-
> > >  Documentation/devicetree/bindings/Makefile   | 22 +++++++++++++-------
> > >  scripts/Makefile.lib                         |  3 ++-
> > >  3 files changed, 17 insertions(+), 10 deletions(-)
> > >
> > > diff --git a/Documentation/devicetree/bindings/.gitignore b/Documentation/devicetree/bindings/.gitignore
> > > index ef82fcfcccab..57afa1533a5f 100644
> > > --- a/Documentation/devicetree/bindings/.gitignore
> > > +++ b/Documentation/devicetree/bindings/.gitignore
> > > @@ -1,2 +1,2 @@
> > >  *.example.dts
> > > -processed-schema.yaml
> > > +processed-schema*.yaml
> > > diff --git a/Documentation/devicetree/bindings/Makefile b/Documentation/devicetree/bindings/Makefile
> > > index 646cb3525373..7c40d5ba1b51 100644
> > > --- a/Documentation/devicetree/bindings/Makefile
> > > +++ b/Documentation/devicetree/bindings/Makefile
> > > @@ -2,7 +2,6 @@
> > >  DT_DOC_CHECKER ?= dt-doc-validate
> > >  DT_EXTRACT_EX ?= dt-extract-example
> > >  DT_MK_SCHEMA ?= dt-mk-schema
> > > -DT_MK_SCHEMA_FLAGS := $(if $(DT_SCHEMA_FILES), -u)
> > >
> > >  quiet_cmd_chk_binding = CHKDT   $(patsubst $(srctree)/%,%,$<)
> > >        cmd_chk_binding = $(DT_DOC_CHECKER) -u $(srctree)/$(src) $< ; \
> > > @@ -11,26 +10,33 @@ quiet_cmd_chk_binding = CHKDT   $(patsubst $(srctree)/%,%,$<)
> > >  $(obj)/%.example.dts: $(src)/%.yaml FORCE
> > >       $(call if_changed,chk_binding)
> > >
> > > -DT_TMP_SCHEMA := processed-schema.yaml
> > > +# Use full schemas when checking %.example.dts
> > > +DT_TMP_SCHEMA := $(obj)/processed-schema-examples.yaml
> > >
> > >  quiet_cmd_mk_schema = SCHEMA  $@
> > >        cmd_mk_schema = $(DT_MK_SCHEMA) $(DT_MK_SCHEMA_FLAGS) -o $@ $(real-prereqs)
> > >
> > > -DT_DOCS = $(shell \
> > > +DT_DOCS = $(addprefix $(src)/, \
> > > +     $(shell \
> > >       cd $(srctree)/$(src) && \
> > >       find * \( -name '*.yaml' ! \
> > > -             -name $(DT_TMP_SCHEMA) ! \
> > > +             -name 'processed-schema*' ! \
> > >               -name '*.example.dt.yaml' \) \
> > > -     )
> > > +     ))
> > >
> > > -DT_SCHEMA_FILES ?= $(addprefix $(src)/,$(DT_DOCS))
> > > +DT_SCHEMA_FILES ?= $(DT_DOCS)
> > >
> > >  ifeq ($(CHECK_DTBS),)
> > >  extra-y += $(patsubst $(src)/%.yaml,%.example.dts, $(DT_SCHEMA_FILES))
> > >  extra-y += $(patsubst $(src)/%.yaml,%.example.dt.yaml, $(DT_SCHEMA_FILES))
> > > +extra-y += processed-schema-examples.yaml
> > > +
> > > +$(obj)/processed-schema-examples.yaml: $(DT_DOCS) FORCE
> > > +     $(call if_changed,mk_schema)
> > >  endif
> > >
> > > -$(obj)/$(DT_TMP_SCHEMA): $(DT_SCHEMA_FILES) FORCE
> > > +$(obj)/processed-schema.yaml: DT_MK_SCHEMA_FLAGS := -u
> > > +$(obj)/processed-schema.yaml: $(DT_SCHEMA_FILES) FORCE
> > >       $(call if_changed,mk_schema)
> > >
> > > -extra-y += $(DT_TMP_SCHEMA)
> > > +extra-y += processed-schema.yaml
> > > diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
> > > index f5ff506e4a24..b12dd5ba4896 100644
> > > --- a/scripts/Makefile.lib
> > > +++ b/scripts/Makefile.lib
> > > @@ -307,7 +307,8 @@ $(obj)/%.dtb: $(src)/%.dts $(DTC) FORCE
> > >
> > >  DT_CHECKER ?= dt-validate
> > >  DT_BINDING_DIR := Documentation/devicetree/bindings
> > > -DT_TMP_SCHEMA := $(objtree)/$(DT_BINDING_DIR)/processed-schema.yaml
> > > +# DT_TMP_SCHEMA may be overridden from Documentation/devicetree/bindings/Makefile
> > > +DT_TMP_SCHEMA ?= $(objtree)/$(DT_BINDING_DIR)/processed-schema.yaml
> > >
> > >  quiet_cmd_dtb_check =        CHECK   $@
> > >        cmd_dtb_check =        $(DT_CHECKER) -u $(srctree)/$(DT_BINDING_DIR) -p $(DT_TMP_SCHEMA) $@
Masahiro Yamada April 21, 2020, 1:15 p.m. UTC | #7
Hi Laurent,

On Tue, Apr 21, 2020 at 8:05 PM Laurent Pinchart
<laurent.pinchart@ideasonboard.com> wrote:
>
> Hi Yamada-san,
>
> On Tue, Apr 21, 2020 at 07:45:05PM +0900, Masahiro Yamada wrote:
> > On Tue, Apr 21, 2020 at 7:08 PM Laurent Pinchart wrote:
> > > On Fri, Feb 28, 2020 at 06:37:30PM -0600, Rob Herring wrote:
> > > > Most folks only run dt_binding_check on the single schema they care about
> > > > by setting DT_SCHEMA_FILES. That means example is only checked against
> > > > that one schema which is not always sufficient.
> > > >
> > > > Let's address this by splitting processed-schema.yaml into 2 files: one
> > > > that's always all schemas for the examples and one that's just the schema
> > > > in DT_SCHEMA_FILES for dtbs.
> > >
> > > This broke
> > >
> > > make DT_SCHEMA_FILES=Documentation/devicetree/.. dt_binding_check
> >
> > What is intended by
> > "DT_SCHEMA_FILES=Documentation/devicetree/.."  ?
>
> My bad, I forgot to write that ... is the continuation of the string.
> It's any yaml schema file that has an example.

Ah, OK. I just input verbatim.

Is it broken?

You can specify any individual file(s) under Documentation/devicetree/bindings/.

For example, the following worked for me.

$ make DT_SCHEMA_FILES=Documentation/devicetree/bindings/arm/psci.yaml
 dt_binding_check
  HOSTCC  scripts/basic/fixdep
  HOSTCC  scripts/dtc/dtc.o
  HOSTCC  scripts/dtc/flattree.o
  HOSTCC  scripts/dtc/fstree.o
  HOSTCC  scripts/dtc/data.o
  HOSTCC  scripts/dtc/livetree.o
  HOSTCC  scripts/dtc/treesource.o
  HOSTCC  scripts/dtc/srcpos.o
  HOSTCC  scripts/dtc/checks.o
  HOSTCC  scripts/dtc/util.o
  LEX     scripts/dtc/dtc-lexer.lex.c
  YACC    scripts/dtc/dtc-parser.tab.[ch]
  HOSTCC  scripts/dtc/dtc-lexer.lex.o
  HOSTCC  scripts/dtc/dtc-parser.tab.o
  HOSTCC  scripts/dtc/yamltree.o
  HOSTLD  scripts/dtc/dtc
  CHKDT   Documentation/devicetree/bindings/arm/psci.yaml
  SCHEMA  Documentation/devicetree/bindings/processed-schema-examples.yaml
  DTC     Documentation/devicetree/bindings/arm/psci.example.dt.yaml
  CHECK   Documentation/devicetree/bindings/arm/psci.example.dt.yaml
  SCHEMA  Documentation/devicetree/bindings/processed-schema.yaml
Laurent Pinchart April 21, 2020, 1:46 p.m. UTC | #8
Hi Yamada-san,

On Tue, Apr 21, 2020 at 10:15:02PM +0900, Masahiro Yamada wrote:
> On Tue, Apr 21, 2020 at 8:05 PM Laurent Pinchart wrote:
> > On Tue, Apr 21, 2020 at 07:45:05PM +0900, Masahiro Yamada wrote:
> > > On Tue, Apr 21, 2020 at 7:08 PM Laurent Pinchart wrote:
> > > > On Fri, Feb 28, 2020 at 06:37:30PM -0600, Rob Herring wrote:
> > > > > Most folks only run dt_binding_check on the single schema they care about
> > > > > by setting DT_SCHEMA_FILES. That means example is only checked against
> > > > > that one schema which is not always sufficient.
> > > > >
> > > > > Let's address this by splitting processed-schema.yaml into 2 files: one
> > > > > that's always all schemas for the examples and one that's just the schema
> > > > > in DT_SCHEMA_FILES for dtbs.
> > > >
> > > > This broke
> > > >
> > > > make DT_SCHEMA_FILES=Documentation/devicetree/.. dt_binding_check
> > >
> > > What is intended by
> > > "DT_SCHEMA_FILES=Documentation/devicetree/.."  ?
> >
> > My bad, I forgot to write that ... is the continuation of the string.
> > It's any yaml schema file that has an example.
> 
> Ah, OK. I just input verbatim.
> 
> Is it broken?
> 
> You can specify any individual file(s) under Documentation/devicetree/bindings/.
> 
> For example, the following worked for me.
> 
> $ make DT_SCHEMA_FILES=Documentation/devicetree/bindings/arm/psci.yaml
>  dt_binding_check
>   HOSTCC  scripts/basic/fixdep
>   HOSTCC  scripts/dtc/dtc.o
>   HOSTCC  scripts/dtc/flattree.o
>   HOSTCC  scripts/dtc/fstree.o
>   HOSTCC  scripts/dtc/data.o
>   HOSTCC  scripts/dtc/livetree.o
>   HOSTCC  scripts/dtc/treesource.o
>   HOSTCC  scripts/dtc/srcpos.o
>   HOSTCC  scripts/dtc/checks.o
>   HOSTCC  scripts/dtc/util.o
>   LEX     scripts/dtc/dtc-lexer.lex.c
>   YACC    scripts/dtc/dtc-parser.tab.[ch]
>   HOSTCC  scripts/dtc/dtc-lexer.lex.o
>   HOSTCC  scripts/dtc/dtc-parser.tab.o
>   HOSTCC  scripts/dtc/yamltree.o
>   HOSTLD  scripts/dtc/dtc
>   CHKDT   Documentation/devicetree/bindings/arm/psci.yaml
>   SCHEMA  Documentation/devicetree/bindings/processed-schema-examples.yaml
>   DTC     Documentation/devicetree/bindings/arm/psci.example.dt.yaml
>   CHECK   Documentation/devicetree/bindings/arm/psci.example.dt.yaml
>   SCHEMA  Documentation/devicetree/bindings/processed-schema.yaml

This is getting interesting.

~/src/kernel/linux $ make O=output/x86 DT_SCHEMA_FILES=Documentation/devicetree/bindings/arm/psci.yaml dt_binding_check
make[1]: Entering directory '/home/laurent/src/kernel/linux/output/x86'
  HOSTCC  scripts/basic/fixdep
  HOSTCC  scripts/dtc/dtc.o
  HOSTCC  scripts/dtc/flattree.o
  HOSTCC  scripts/dtc/fstree.o
  HOSTCC  scripts/dtc/data.o
  HOSTCC  scripts/dtc/livetree.o
  HOSTCC  scripts/dtc/treesource.o
  HOSTCC  scripts/dtc/srcpos.o
  HOSTCC  scripts/dtc/checks.o
  HOSTCC  scripts/dtc/util.o
  LEX     scripts/dtc/dtc-lexer.lex.c
  YACC    scripts/dtc/dtc-parser.tab.[ch]
  HOSTCC  scripts/dtc/dtc-lexer.lex.o
  HOSTCC  scripts/dtc/dtc-parser.tab.o
  HOSTCC  scripts/dtc/yamltree.o
  HOSTLD  scripts/dtc/dtc
  CHKDT   Documentation/devicetree/bindings/arm/psci.yaml
  SCHEMA  Documentation/devicetree/bindings/processed-schema-examples.yaml
  DTC     Documentation/devicetree/bindings/arm/psci.example.dt.yaml
  CHECK   Documentation/devicetree/bindings/arm/psci.example.dt.yaml
  SCHEMA  Documentation/devicetree/bindings/processed-schema.yaml
make[1]: Leaving directory '/home/laurent/src/kernel/linux/output/x86'

~/src/kernel/this_is_a_long_directory_name/linux $ make O=output/x86 DT_SCHEMA_FILES=Documentation/devicetree/bindings/arm/psci.yaml dt_binding_check
make[1]: Entering directory '/home/laurent/src/kernel/this_is_a_long_directory_name/linux/output/x86'
  HOSTCC  scripts/basic/fixdep
  HOSTCC  scripts/dtc/dtc.o
  HOSTCC  scripts/dtc/flattree.o
  HOSTCC  scripts/dtc/fstree.o
  HOSTCC  scripts/dtc/data.o
  HOSTCC  scripts/dtc/livetree.o
  HOSTCC  scripts/dtc/treesource.o
  HOSTCC  scripts/dtc/srcpos.o
  HOSTCC  scripts/dtc/checks.o
  HOSTCC  scripts/dtc/util.o
  LEX     scripts/dtc/dtc-lexer.lex.c
  YACC    scripts/dtc/dtc-parser.tab.[ch]
  HOSTCC  scripts/dtc/dtc-lexer.lex.o
  HOSTCC  scripts/dtc/dtc-parser.tab.o
  HOSTCC  scripts/dtc/yamltree.o
  HOSTLD  scripts/dtc/dtc
  CHKDT   Documentation/devicetree/bindings/arm/psci.yaml
make[2]: execvp: /bin/sh: Argument list too long
make[2]: *** [/home/laurent/src/kernel/this_is_a_long_directory_name/linux/Documentation/devicetree/bindings/Makefile:38: Documentation/devicetree/bindings/processed-schema-examples.yaml] Error 127
make[1]: *** [/home/laurent/src/kernel/this_is_a_long_directory_name/linux/Makefile:1300: dt_binding_check] Error 2
make[1]: Leaving directory '/home/laurent/src/kernel/this_is_a_long_directory_name/linux/output/x86'
make: *** [Makefile:180: sub-make] Error 2

It seems to only fail with out of tree builds (O=...). I expect that
failures will become more common the more YAML bindings we have, even
without long directory names.
Rob Herring April 21, 2020, 1:47 p.m. UTC | #9
On Tue, Apr 21, 2020 at 8:16 AM Masahiro Yamada <masahiroy@kernel.org> wrote:
>
> Hi Laurent,
>
> On Tue, Apr 21, 2020 at 8:05 PM Laurent Pinchart
> <laurent.pinchart@ideasonboard.com> wrote:
> >
> > Hi Yamada-san,
> >
> > On Tue, Apr 21, 2020 at 07:45:05PM +0900, Masahiro Yamada wrote:
> > > On Tue, Apr 21, 2020 at 7:08 PM Laurent Pinchart wrote:
> > > > On Fri, Feb 28, 2020 at 06:37:30PM -0600, Rob Herring wrote:
> > > > > Most folks only run dt_binding_check on the single schema they care about
> > > > > by setting DT_SCHEMA_FILES. That means example is only checked against
> > > > > that one schema which is not always sufficient.
> > > > >
> > > > > Let's address this by splitting processed-schema.yaml into 2 files: one
> > > > > that's always all schemas for the examples and one that's just the schema
> > > > > in DT_SCHEMA_FILES for dtbs.
> > > >
> > > > This broke
> > > >
> > > > make DT_SCHEMA_FILES=Documentation/devicetree/.. dt_binding_check
> > >
> > > What is intended by
> > > "DT_SCHEMA_FILES=Documentation/devicetree/.."  ?
> >
> > My bad, I forgot to write that ... is the continuation of the string.
> > It's any yaml schema file that has an example.
>
> Ah, OK. I just input verbatim.
>
> Is it broken?
>
> You can specify any individual file(s) under Documentation/devicetree/bindings/.
>
> For example, the following worked for me.

Me too.

There is however a bug I just noticed. We're now always setting '-u'
for dtbs_check which means the core schema are never used.

Masahiro, Got a better suggestion than adding the ifeq:

ifeq ("$(origin DT_SCHEMA_FILES)", "command line")
$(obj)/processed-schema.yaml: DT_MK_SCHEMA_FLAGS := -u
endif

Rob
Rob Herring April 21, 2020, 2:01 p.m. UTC | #10
On Tue, Apr 21, 2020 at 8:47 AM Laurent Pinchart
<laurent.pinchart@ideasonboard.com> wrote:
>
> Hi Yamada-san,
>
> On Tue, Apr 21, 2020 at 10:15:02PM +0900, Masahiro Yamada wrote:
> > On Tue, Apr 21, 2020 at 8:05 PM Laurent Pinchart wrote:
> > > On Tue, Apr 21, 2020 at 07:45:05PM +0900, Masahiro Yamada wrote:
> > > > On Tue, Apr 21, 2020 at 7:08 PM Laurent Pinchart wrote:
> > > > > On Fri, Feb 28, 2020 at 06:37:30PM -0600, Rob Herring wrote:
> > > > > > Most folks only run dt_binding_check on the single schema they care about
> > > > > > by setting DT_SCHEMA_FILES. That means example is only checked against
> > > > > > that one schema which is not always sufficient.
> > > > > >
> > > > > > Let's address this by splitting processed-schema.yaml into 2 files: one
> > > > > > that's always all schemas for the examples and one that's just the schema
> > > > > > in DT_SCHEMA_FILES for dtbs.
> > > > >
> > > > > This broke
> > > > >
> > > > > make DT_SCHEMA_FILES=Documentation/devicetree/.. dt_binding_check
> > > >
> > > > What is intended by
> > > > "DT_SCHEMA_FILES=Documentation/devicetree/.."  ?
> > >
> > > My bad, I forgot to write that ... is the continuation of the string.
> > > It's any yaml schema file that has an example.
> >
> > Ah, OK. I just input verbatim.
> >
> > Is it broken?
> >
> > You can specify any individual file(s) under Documentation/devicetree/bindings/.
> >
> > For example, the following worked for me.
> >
> > $ make DT_SCHEMA_FILES=Documentation/devicetree/bindings/arm/psci.yaml
> >  dt_binding_check
> >   HOSTCC  scripts/basic/fixdep
> >   HOSTCC  scripts/dtc/dtc.o
> >   HOSTCC  scripts/dtc/flattree.o
> >   HOSTCC  scripts/dtc/fstree.o
> >   HOSTCC  scripts/dtc/data.o
> >   HOSTCC  scripts/dtc/livetree.o
> >   HOSTCC  scripts/dtc/treesource.o
> >   HOSTCC  scripts/dtc/srcpos.o
> >   HOSTCC  scripts/dtc/checks.o
> >   HOSTCC  scripts/dtc/util.o
> >   LEX     scripts/dtc/dtc-lexer.lex.c
> >   YACC    scripts/dtc/dtc-parser.tab.[ch]
> >   HOSTCC  scripts/dtc/dtc-lexer.lex.o
> >   HOSTCC  scripts/dtc/dtc-parser.tab.o
> >   HOSTCC  scripts/dtc/yamltree.o
> >   HOSTLD  scripts/dtc/dtc
> >   CHKDT   Documentation/devicetree/bindings/arm/psci.yaml
> >   SCHEMA  Documentation/devicetree/bindings/processed-schema-examples.yaml
> >   DTC     Documentation/devicetree/bindings/arm/psci.example.dt.yaml
> >   CHECK   Documentation/devicetree/bindings/arm/psci.example.dt.yaml
> >   SCHEMA  Documentation/devicetree/bindings/processed-schema.yaml
>
> This is getting interesting.
>
> ~/src/kernel/linux $ make O=output/x86 DT_SCHEMA_FILES=Documentation/devicetree/bindings/arm/psci.yaml dt_binding_check
> make[1]: Entering directory '/home/laurent/src/kernel/linux/output/x86'
>   HOSTCC  scripts/basic/fixdep
>   HOSTCC  scripts/dtc/dtc.o
>   HOSTCC  scripts/dtc/flattree.o
>   HOSTCC  scripts/dtc/fstree.o
>   HOSTCC  scripts/dtc/data.o
>   HOSTCC  scripts/dtc/livetree.o
>   HOSTCC  scripts/dtc/treesource.o
>   HOSTCC  scripts/dtc/srcpos.o
>   HOSTCC  scripts/dtc/checks.o
>   HOSTCC  scripts/dtc/util.o
>   LEX     scripts/dtc/dtc-lexer.lex.c
>   YACC    scripts/dtc/dtc-parser.tab.[ch]
>   HOSTCC  scripts/dtc/dtc-lexer.lex.o
>   HOSTCC  scripts/dtc/dtc-parser.tab.o
>   HOSTCC  scripts/dtc/yamltree.o
>   HOSTLD  scripts/dtc/dtc
>   CHKDT   Documentation/devicetree/bindings/arm/psci.yaml
>   SCHEMA  Documentation/devicetree/bindings/processed-schema-examples.yaml
>   DTC     Documentation/devicetree/bindings/arm/psci.example.dt.yaml
>   CHECK   Documentation/devicetree/bindings/arm/psci.example.dt.yaml
>   SCHEMA  Documentation/devicetree/bindings/processed-schema.yaml
> make[1]: Leaving directory '/home/laurent/src/kernel/linux/output/x86'
>
> ~/src/kernel/this_is_a_long_directory_name/linux $ make O=output/x86 DT_SCHEMA_FILES=Documentation/devicetree/bindings/arm/psci.yaml dt_binding_check
> make[1]: Entering directory '/home/laurent/src/kernel/this_is_a_long_directory_name/linux/output/x86'
>   HOSTCC  scripts/basic/fixdep
>   HOSTCC  scripts/dtc/dtc.o
>   HOSTCC  scripts/dtc/flattree.o
>   HOSTCC  scripts/dtc/fstree.o
>   HOSTCC  scripts/dtc/data.o
>   HOSTCC  scripts/dtc/livetree.o
>   HOSTCC  scripts/dtc/treesource.o
>   HOSTCC  scripts/dtc/srcpos.o
>   HOSTCC  scripts/dtc/checks.o
>   HOSTCC  scripts/dtc/util.o
>   LEX     scripts/dtc/dtc-lexer.lex.c
>   YACC    scripts/dtc/dtc-parser.tab.[ch]
>   HOSTCC  scripts/dtc/dtc-lexer.lex.o
>   HOSTCC  scripts/dtc/dtc-parser.tab.o
>   HOSTCC  scripts/dtc/yamltree.o
>   HOSTLD  scripts/dtc/dtc
>   CHKDT   Documentation/devicetree/bindings/arm/psci.yaml
> make[2]: execvp: /bin/sh: Argument list too long
> make[2]: *** [/home/laurent/src/kernel/this_is_a_long_directory_name/linux/Documentation/devicetree/bindings/Makefile:38: Documentation/devicetree/bindings/processed-schema-examples.yaml] Error 127
> make[1]: *** [/home/laurent/src/kernel/this_is_a_long_directory_name/linux/Makefile:1300: dt_binding_check] Error 2
> make[1]: Leaving directory '/home/laurent/src/kernel/this_is_a_long_directory_name/linux/output/x86'
> make: *** [Makefile:180: sub-make] Error 2
>
> It seems to only fail with out of tree builds (O=...). I expect that
> failures will become more common the more YAML bindings we have, even
> without long directory names.

dt-mk-schema can take and recurse a single directory already, so does
this fix it for you:

@@ -22,7 +22,7 @@ $(obj)/%.example.dts: $(src)/%.yaml
check_dtschema_version FORCE
 DT_TMP_SCHEMA := $(obj)/processed-schema-examples.yaml

 quiet_cmd_mk_schema = SCHEMA  $@
-      cmd_mk_schema = $(DT_MK_SCHEMA) $(DT_MK_SCHEMA_FLAGS) -o $@
$(real-prereqs)
+      cmd_mk_schema = $(DT_MK_SCHEMA) $(DT_MK_SCHEMA_FLAGS) -o $@
$(srctree)/$(src)

 DT_DOCS = $(addprefix $(src)/, \
        $(shell \
Masahiro Yamada April 21, 2020, 4:56 p.m. UTC | #11
Hi Rob,


On Tue, Apr 21, 2020 at 11:01 PM Rob Herring <robh@kernel.org> wrote:
> >
> > It seems to only fail with out of tree builds (O=...). I expect that
> > failures will become more common the more YAML bindings we have, even
> > without long directory names.
>
> dt-mk-schema can take and recurse a single directory already, so does
> this fix it for you:
>
> @@ -22,7 +22,7 @@ $(obj)/%.example.dts: $(src)/%.yaml
> check_dtschema_version FORCE
>  DT_TMP_SCHEMA := $(obj)/processed-schema-examples.yaml
>
>  quiet_cmd_mk_schema = SCHEMA  $@
> -      cmd_mk_schema = $(DT_MK_SCHEMA) $(DT_MK_SCHEMA_FLAGS) -o $@
> $(real-prereqs)
> +      cmd_mk_schema = $(DT_MK_SCHEMA) $(DT_MK_SCHEMA_FLAGS) -o $@
> $(srctree)/$(src)


I am just curious.

How come the tool excludes 'processed-schema*' and '*.example.dt.yaml'
from $(srctree)/$(src) ?
Masahiro Yamada April 21, 2020, 5:31 p.m. UTC | #12
Hi Rob,

On Tue, Apr 21, 2020 at 10:47 PM Rob Herring <robh@kernel.org> wrote:
>
> On Tue, Apr 21, 2020 at 8:16 AM Masahiro Yamada <masahiroy@kernel.org> wrote:
> >
> > Hi Laurent,
> >
> > On Tue, Apr 21, 2020 at 8:05 PM Laurent Pinchart
> > <laurent.pinchart@ideasonboard.com> wrote:
> > >
> > > Hi Yamada-san,
> > >
> > > On Tue, Apr 21, 2020 at 07:45:05PM +0900, Masahiro Yamada wrote:
> > > > On Tue, Apr 21, 2020 at 7:08 PM Laurent Pinchart wrote:
> > > > > On Fri, Feb 28, 2020 at 06:37:30PM -0600, Rob Herring wrote:
> > > > > > Most folks only run dt_binding_check on the single schema they care about
> > > > > > by setting DT_SCHEMA_FILES. That means example is only checked against
> > > > > > that one schema which is not always sufficient.
> > > > > >
> > > > > > Let's address this by splitting processed-schema.yaml into 2 files: one
> > > > > > that's always all schemas for the examples and one that's just the schema
> > > > > > in DT_SCHEMA_FILES for dtbs.
> > > > >
> > > > > This broke
> > > > >
> > > > > make DT_SCHEMA_FILES=Documentation/devicetree/.. dt_binding_check
> > > >
> > > > What is intended by
> > > > "DT_SCHEMA_FILES=Documentation/devicetree/.."  ?
> > >
> > > My bad, I forgot to write that ... is the continuation of the string.
> > > It's any yaml schema file that has an example.
> >
> > Ah, OK. I just input verbatim.
> >
> > Is it broken?
> >
> > You can specify any individual file(s) under Documentation/devicetree/bindings/.
> >
> > For example, the following worked for me.
>
> Me too.
>
> There is however a bug I just noticed. We're now always setting '-u'
> for dtbs_check which means the core schema are never used.
>
> Masahiro, Got a better suggestion than adding the ifeq:
>
> ifeq ("$(origin DT_SCHEMA_FILES)", "command line")
> $(obj)/processed-schema.yaml: DT_MK_SCHEMA_FLAGS := -u
> endif


Hmm, this does not work when DT_SCHEMA_FILES is
passed as the environment variable.


ifneq ("$(origin DT_SCHEMA_FILES)", "file")
$(obj)/processed-schema.yaml: DT_MK_SCHEMA_FLAGS := -u
endif

... should work, I think.


Maybe, the following also works. Please choose whatever you like.

diff --git a/Documentation/devicetree/bindings/Makefile
b/Documentation/devicetree/bindings/Makefile
index 1df680d07461..a939bb18f66b 100644
--- a/Documentation/devicetree/bindings/Makefile
+++ b/Documentation/devicetree/bindings/Makefile
@@ -2,6 +2,7 @@
 DT_DOC_CHECKER ?= dt-doc-validate
 DT_EXTRACT_EX ?= dt-extract-example
 DT_MK_SCHEMA ?= dt-mk-schema
+DT_MK_SCHEMA_USERONLY_FLAG := $(if $(DT_SCHEMA_FILES), -u)

 quiet_cmd_chk_binding = CHKDT   $(patsubst $(srctree)/%,%,$<)
       cmd_chk_binding = $(DT_DOC_CHECKER) -u $(srctree)/$(src) $< ; \
@@ -37,7 +38,7 @@ override DTC_FLAGS := \
 $(obj)/processed-schema-examples.yaml: $(DT_DOCS) FORCE
        $(call if_changed,mk_schema)

-$(obj)/processed-schema.yaml: DT_MK_SCHEMA_FLAGS := -u
+$(obj)/processed-schema.yaml: DT_MK_SCHEMA_FLAGS :=
$(DT_MK_SCHEMA_USERONLY_FLAG)
 $(obj)/processed-schema.yaml: $(DT_SCHEMA_FILES) FORCE
        $(call if_changed,mk_schema)
Masahiro Yamada April 21, 2020, 5:36 p.m. UTC | #13
Hi Laurent,

On Tue, Apr 21, 2020 at 10:47 PM Laurent Pinchart
<laurent.pinchart@ideasonboard.com> wrote:

>   HOSTLD  scripts/dtc/dtc
>   CHKDT   Documentation/devicetree/bindings/arm/psci.yaml
> make[2]: execvp: /bin/sh: Argument list too long
> make[2]: *** [/home/laurent/src/kernel/this_is_a_long_directory_name/linux/Documentation/devicetree/bindings/Makefile:38: Documentation/devicetree/bindings/processed-schema-examples.yaml] Error 127
> make[1]: *** [/home/laurent/src/kernel/this_is_a_long_directory_name/linux/Makefile:1300: dt_binding_check] Error 2
> make[1]: Leaving directory '/home/laurent/src/kernel/this_is_a_long_directory_name/linux/output/x86'
> make: *** [Makefile:180: sub-make] Error 2
>
> It seems to only fail with out of tree builds (O=...). I expect that
> failures will become more common the more YAML bindings we have, even
> without long directory names.

Indeed. This will be a common problem sooner or later.

Rob already suggested a solution.


Another way is to use a pipe.

See the following code in scripts/Makefile.modpost


# Read out modules.order instead of expanding $(modules) to pass in modpost.
# Otherwise, allmodconfig would fail with "Argument list too long".
quiet_cmd_modpost = MODPOST $(words $(modules)) modules
      cmd_modpost = sed 's/ko$$/o/' $(MODORDER) | $(MODPOST)


The same issue happens for modpost
because allmodconfig floods the command line.
Laurent Pinchart April 21, 2020, 6:29 p.m. UTC | #14
Hi Rob,

On Tue, Apr 21, 2020 at 09:01:32AM -0500, Rob Herring wrote:
> On Tue, Apr 21, 2020 at 8:47 AM Laurent Pinchart wrote:
> > On Tue, Apr 21, 2020 at 10:15:02PM +0900, Masahiro Yamada wrote:
> > > On Tue, Apr 21, 2020 at 8:05 PM Laurent Pinchart wrote:
> > > > On Tue, Apr 21, 2020 at 07:45:05PM +0900, Masahiro Yamada wrote:
> > > > > On Tue, Apr 21, 2020 at 7:08 PM Laurent Pinchart wrote:
> > > > > > On Fri, Feb 28, 2020 at 06:37:30PM -0600, Rob Herring wrote:
> > > > > > > Most folks only run dt_binding_check on the single schema they care about
> > > > > > > by setting DT_SCHEMA_FILES. That means example is only checked against
> > > > > > > that one schema which is not always sufficient.
> > > > > > >
> > > > > > > Let's address this by splitting processed-schema.yaml into 2 files: one
> > > > > > > that's always all schemas for the examples and one that's just the schema
> > > > > > > in DT_SCHEMA_FILES for dtbs.
> > > > > >
> > > > > > This broke
> > > > > >
> > > > > > make DT_SCHEMA_FILES=Documentation/devicetree/.. dt_binding_check
> > > > >
> > > > > What is intended by
> > > > > "DT_SCHEMA_FILES=Documentation/devicetree/.."  ?
> > > >
> > > > My bad, I forgot to write that ... is the continuation of the string.
> > > > It's any yaml schema file that has an example.
> > >
> > > Ah, OK. I just input verbatim.
> > >
> > > Is it broken?
> > >
> > > You can specify any individual file(s) under Documentation/devicetree/bindings/.
> > >
> > > For example, the following worked for me.
> > >
> > > $ make DT_SCHEMA_FILES=Documentation/devicetree/bindings/arm/psci.yaml
> > >  dt_binding_check
> > >   HOSTCC  scripts/basic/fixdep
> > >   HOSTCC  scripts/dtc/dtc.o
> > >   HOSTCC  scripts/dtc/flattree.o
> > >   HOSTCC  scripts/dtc/fstree.o
> > >   HOSTCC  scripts/dtc/data.o
> > >   HOSTCC  scripts/dtc/livetree.o
> > >   HOSTCC  scripts/dtc/treesource.o
> > >   HOSTCC  scripts/dtc/srcpos.o
> > >   HOSTCC  scripts/dtc/checks.o
> > >   HOSTCC  scripts/dtc/util.o
> > >   LEX     scripts/dtc/dtc-lexer.lex.c
> > >   YACC    scripts/dtc/dtc-parser.tab.[ch]
> > >   HOSTCC  scripts/dtc/dtc-lexer.lex.o
> > >   HOSTCC  scripts/dtc/dtc-parser.tab.o
> > >   HOSTCC  scripts/dtc/yamltree.o
> > >   HOSTLD  scripts/dtc/dtc
> > >   CHKDT   Documentation/devicetree/bindings/arm/psci.yaml
> > >   SCHEMA  Documentation/devicetree/bindings/processed-schema-examples.yaml
> > >   DTC     Documentation/devicetree/bindings/arm/psci.example.dt.yaml
> > >   CHECK   Documentation/devicetree/bindings/arm/psci.example.dt.yaml
> > >   SCHEMA  Documentation/devicetree/bindings/processed-schema.yaml
> >
> > This is getting interesting.
> >
> > ~/src/kernel/linux $ make O=output/x86 DT_SCHEMA_FILES=Documentation/devicetree/bindings/arm/psci.yaml dt_binding_check
> > make[1]: Entering directory '/home/laurent/src/kernel/linux/output/x86'
> >   HOSTCC  scripts/basic/fixdep
> >   HOSTCC  scripts/dtc/dtc.o
> >   HOSTCC  scripts/dtc/flattree.o
> >   HOSTCC  scripts/dtc/fstree.o
> >   HOSTCC  scripts/dtc/data.o
> >   HOSTCC  scripts/dtc/livetree.o
> >   HOSTCC  scripts/dtc/treesource.o
> >   HOSTCC  scripts/dtc/srcpos.o
> >   HOSTCC  scripts/dtc/checks.o
> >   HOSTCC  scripts/dtc/util.o
> >   LEX     scripts/dtc/dtc-lexer.lex.c
> >   YACC    scripts/dtc/dtc-parser.tab.[ch]
> >   HOSTCC  scripts/dtc/dtc-lexer.lex.o
> >   HOSTCC  scripts/dtc/dtc-parser.tab.o
> >   HOSTCC  scripts/dtc/yamltree.o
> >   HOSTLD  scripts/dtc/dtc
> >   CHKDT   Documentation/devicetree/bindings/arm/psci.yaml
> >   SCHEMA  Documentation/devicetree/bindings/processed-schema-examples.yaml
> >   DTC     Documentation/devicetree/bindings/arm/psci.example.dt.yaml
> >   CHECK   Documentation/devicetree/bindings/arm/psci.example.dt.yaml
> >   SCHEMA  Documentation/devicetree/bindings/processed-schema.yaml
> > make[1]: Leaving directory '/home/laurent/src/kernel/linux/output/x86'
> >
> > ~/src/kernel/this_is_a_long_directory_name/linux $ make O=output/x86 DT_SCHEMA_FILES=Documentation/devicetree/bindings/arm/psci.yaml dt_binding_check
> > make[1]: Entering directory '/home/laurent/src/kernel/this_is_a_long_directory_name/linux/output/x86'
> >   HOSTCC  scripts/basic/fixdep
> >   HOSTCC  scripts/dtc/dtc.o
> >   HOSTCC  scripts/dtc/flattree.o
> >   HOSTCC  scripts/dtc/fstree.o
> >   HOSTCC  scripts/dtc/data.o
> >   HOSTCC  scripts/dtc/livetree.o
> >   HOSTCC  scripts/dtc/treesource.o
> >   HOSTCC  scripts/dtc/srcpos.o
> >   HOSTCC  scripts/dtc/checks.o
> >   HOSTCC  scripts/dtc/util.o
> >   LEX     scripts/dtc/dtc-lexer.lex.c
> >   YACC    scripts/dtc/dtc-parser.tab.[ch]
> >   HOSTCC  scripts/dtc/dtc-lexer.lex.o
> >   HOSTCC  scripts/dtc/dtc-parser.tab.o
> >   HOSTCC  scripts/dtc/yamltree.o
> >   HOSTLD  scripts/dtc/dtc
> >   CHKDT   Documentation/devicetree/bindings/arm/psci.yaml
> > make[2]: execvp: /bin/sh: Argument list too long
> > make[2]: *** [/home/laurent/src/kernel/this_is_a_long_directory_name/linux/Documentation/devicetree/bindings/Makefile:38: Documentation/devicetree/bindings/processed-schema-examples.yaml] Error 127
> > make[1]: *** [/home/laurent/src/kernel/this_is_a_long_directory_name/linux/Makefile:1300: dt_binding_check] Error 2
> > make[1]: Leaving directory '/home/laurent/src/kernel/this_is_a_long_directory_name/linux/output/x86'
> > make: *** [Makefile:180: sub-make] Error 2
> >
> > It seems to only fail with out of tree builds (O=...). I expect that
> > failures will become more common the more YAML bindings we have, even
> > without long directory names.
> 
> dt-mk-schema can take and recurse a single directory already, so does
> this fix it for you:

Yes, the change below fixes my problem, thank you.

> @@ -22,7 +22,7 @@ $(obj)/%.example.dts: $(src)/%.yaml
> check_dtschema_version FORCE
>  DT_TMP_SCHEMA := $(obj)/processed-schema-examples.yaml
> 
>  quiet_cmd_mk_schema = SCHEMA  $@
> -      cmd_mk_schema = $(DT_MK_SCHEMA) $(DT_MK_SCHEMA_FLAGS) -o $@
> $(real-prereqs)
> +      cmd_mk_schema = $(DT_MK_SCHEMA) $(DT_MK_SCHEMA_FLAGS) -o $@
> $(srctree)/$(src)
> 
>  DT_DOCS = $(addprefix $(src)/, \
>         $(shell \
Rob Herring April 21, 2020, 7:31 p.m. UTC | #15
On Tue, Apr 21, 2020 at 11:57 AM Masahiro Yamada <masahiroy@kernel.org> wrote:
>
> Hi Rob,
>
>
> On Tue, Apr 21, 2020 at 11:01 PM Rob Herring <robh@kernel.org> wrote:
> > >
> > > It seems to only fail with out of tree builds (O=...). I expect that
> > > failures will become more common the more YAML bindings we have, even
> > > without long directory names.
> >
> > dt-mk-schema can take and recurse a single directory already, so does
> > this fix it for you:
> >
> > @@ -22,7 +22,7 @@ $(obj)/%.example.dts: $(src)/%.yaml
> > check_dtschema_version FORCE
> >  DT_TMP_SCHEMA := $(obj)/processed-schema-examples.yaml
> >
> >  quiet_cmd_mk_schema = SCHEMA  $@
> > -      cmd_mk_schema = $(DT_MK_SCHEMA) $(DT_MK_SCHEMA_FLAGS) -o $@
> > $(real-prereqs)
> > +      cmd_mk_schema = $(DT_MK_SCHEMA) $(DT_MK_SCHEMA_FLAGS) -o $@
> > $(srctree)/$(src)
>
>
> I am just curious.
>
> How come the tool excludes 'processed-schema*' and '*.example.dt.yaml'
> from $(srctree)/$(src) ?

Uggg, it wouldn't. Can't everyone build out of tree. ;) I guess the options are:

- Call dt-mk-schema on each file individually appending the result
- Make dt-mk-schema take stdin or a file with a list of files as
Masahiro suggested

I'd like to avoid a dt-mk-schema change so I'll try to make the former
work. It's only been a day since adding a minimum version. :(

Rob
Rob Herring April 21, 2020, 8:40 p.m. UTC | #16
On Tue, Apr 21, 2020 at 2:31 PM Rob Herring <robh@kernel.org> wrote:
>
> On Tue, Apr 21, 2020 at 11:57 AM Masahiro Yamada <masahiroy@kernel.org> wrote:
> >
> > Hi Rob,
> >
> >
> > On Tue, Apr 21, 2020 at 11:01 PM Rob Herring <robh@kernel.org> wrote:
> > > >
> > > > It seems to only fail with out of tree builds (O=...). I expect that
> > > > failures will become more common the more YAML bindings we have, even
> > > > without long directory names.
> > >
> > > dt-mk-schema can take and recurse a single directory already, so does
> > > this fix it for you:
> > >
> > > @@ -22,7 +22,7 @@ $(obj)/%.example.dts: $(src)/%.yaml
> > > check_dtschema_version FORCE
> > >  DT_TMP_SCHEMA := $(obj)/processed-schema-examples.yaml
> > >
> > >  quiet_cmd_mk_schema = SCHEMA  $@
> > > -      cmd_mk_schema = $(DT_MK_SCHEMA) $(DT_MK_SCHEMA_FLAGS) -o $@
> > > $(real-prereqs)
> > > +      cmd_mk_schema = $(DT_MK_SCHEMA) $(DT_MK_SCHEMA_FLAGS) -o $@
> > > $(srctree)/$(src)
> >
> >
> > I am just curious.
> >
> > How come the tool excludes 'processed-schema*' and '*.example.dt.yaml'
> > from $(srctree)/$(src) ?
>
> Uggg, it wouldn't. Can't everyone build out of tree. ;) I guess the options are:
>
> - Call dt-mk-schema on each file individually appending the result
> - Make dt-mk-schema take stdin or a file with a list of files as
> Masahiro suggested
>
> I'd like to avoid a dt-mk-schema change so I'll try to make the former
> work. It's only been a day since adding a minimum version. :(

Laurent, does this work for you? I've reproduced the problem, but just
double checking.

 DT_TMP_SCHEMA := $(obj)/processed-schema-examples.yaml

 quiet_cmd_mk_schema = SCHEMA  $@
-      cmd_mk_schema = $(DT_MK_SCHEMA) $(DT_MK_SCHEMA_FLAGS) -o $@
$(real-prereqs)
+      cmd_mk_schema = $(file >$@.tmp, $(real-prereqs)) \
+                      cat $@.tmp | xargs $(DT_MK_SCHEMA)
$(DT_MK_SCHEMA_FLAGS) -o $@

 DT_DOCS = $(addprefix $(src)/, \
        $(shell \
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/.gitignore b/Documentation/devicetree/bindings/.gitignore
index ef82fcfcccab..57afa1533a5f 100644
--- a/Documentation/devicetree/bindings/.gitignore
+++ b/Documentation/devicetree/bindings/.gitignore
@@ -1,2 +1,2 @@ 
 *.example.dts
-processed-schema.yaml
+processed-schema*.yaml
diff --git a/Documentation/devicetree/bindings/Makefile b/Documentation/devicetree/bindings/Makefile
index 646cb3525373..7c40d5ba1b51 100644
--- a/Documentation/devicetree/bindings/Makefile
+++ b/Documentation/devicetree/bindings/Makefile
@@ -2,7 +2,6 @@ 
 DT_DOC_CHECKER ?= dt-doc-validate
 DT_EXTRACT_EX ?= dt-extract-example
 DT_MK_SCHEMA ?= dt-mk-schema
-DT_MK_SCHEMA_FLAGS := $(if $(DT_SCHEMA_FILES), -u)
 
 quiet_cmd_chk_binding = CHKDT   $(patsubst $(srctree)/%,%,$<)
       cmd_chk_binding = $(DT_DOC_CHECKER) -u $(srctree)/$(src) $< ; \
@@ -11,26 +10,33 @@  quiet_cmd_chk_binding = CHKDT   $(patsubst $(srctree)/%,%,$<)
 $(obj)/%.example.dts: $(src)/%.yaml FORCE
 	$(call if_changed,chk_binding)
 
-DT_TMP_SCHEMA := processed-schema.yaml
+# Use full schemas when checking %.example.dts
+DT_TMP_SCHEMA := $(obj)/processed-schema-examples.yaml
 
 quiet_cmd_mk_schema = SCHEMA  $@
       cmd_mk_schema = $(DT_MK_SCHEMA) $(DT_MK_SCHEMA_FLAGS) -o $@ $(real-prereqs)
 
-DT_DOCS = $(shell \
+DT_DOCS = $(addprefix $(src)/, \
+	$(shell \
 	cd $(srctree)/$(src) && \
 	find * \( -name '*.yaml' ! \
-		-name $(DT_TMP_SCHEMA) ! \
+		-name 'processed-schema*' ! \
 		-name '*.example.dt.yaml' \) \
-	)
+	))
 
-DT_SCHEMA_FILES ?= $(addprefix $(src)/,$(DT_DOCS))
+DT_SCHEMA_FILES ?= $(DT_DOCS)
 
 ifeq ($(CHECK_DTBS),)
 extra-y += $(patsubst $(src)/%.yaml,%.example.dts, $(DT_SCHEMA_FILES))
 extra-y += $(patsubst $(src)/%.yaml,%.example.dt.yaml, $(DT_SCHEMA_FILES))
+extra-y += processed-schema-examples.yaml
+
+$(obj)/processed-schema-examples.yaml: $(DT_DOCS) FORCE
+	$(call if_changed,mk_schema)
 endif
 
-$(obj)/$(DT_TMP_SCHEMA): $(DT_SCHEMA_FILES) FORCE
+$(obj)/processed-schema.yaml: DT_MK_SCHEMA_FLAGS := -u
+$(obj)/processed-schema.yaml: $(DT_SCHEMA_FILES) FORCE
 	$(call if_changed,mk_schema)
 
-extra-y += $(DT_TMP_SCHEMA)
+extra-y += processed-schema.yaml
diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index f5ff506e4a24..b12dd5ba4896 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -307,7 +307,8 @@  $(obj)/%.dtb: $(src)/%.dts $(DTC) FORCE
 
 DT_CHECKER ?= dt-validate
 DT_BINDING_DIR := Documentation/devicetree/bindings
-DT_TMP_SCHEMA := $(objtree)/$(DT_BINDING_DIR)/processed-schema.yaml
+# DT_TMP_SCHEMA may be overridden from Documentation/devicetree/bindings/Makefile
+DT_TMP_SCHEMA ?= $(objtree)/$(DT_BINDING_DIR)/processed-schema.yaml
 
 quiet_cmd_dtb_check =	CHECK   $@
       cmd_dtb_check =	$(DT_CHECKER) -u $(srctree)/$(DT_BINDING_DIR) -p $(DT_TMP_SCHEMA) $@