Messages in this thread | | | Date | Wed, 22 Apr 2020 02:37:37 +0300 | From | Laurent Pinchart <> | Subject | Re: [PATCH 1/2] dt-bindings: Fix command line length limit calling dt-mk-schema |
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Hi Rob,
Thank you for the patch.
On Tue, Apr 21, 2020 at 04:20:03PM -0500, Rob Herring wrote: > As the number of schemas has increased, we're starting to hit the error > "execvp: /bin/sh: Argument list too long". This is due to passing all the > schema files on the command line to dt-mk-schema. It currently is only > with out of tree builds and is intermittent depending on the file path > lengths. > > Commit 2ba06cd8565b ("kbuild: Always validate DT binding examples") made > hitting this proplem more likely since the example validation now always > gets the full list of schemas. > > Fix this by putting the schema file list into a temp file and using xargs. > > Reported-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> > Cc: Masahiro Yamada <masahiroy@kernel.org> > Signed-off-by: Rob Herring <robh@kernel.org>
Quite a bit slower than v5.6 when passing DT_SCHEMA_FILES, but reasonable, and working now :-)
Tested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> --- > Documentation/devicetree/bindings/.gitignore | 2 +- > Documentation/devicetree/bindings/Makefile | 3 ++- > 2 files changed, 3 insertions(+), 2 deletions(-) > > diff --git a/Documentation/devicetree/bindings/.gitignore b/Documentation/devicetree/bindings/.gitignore > index 5c6d8ea1a09c..0a6aef915fa4 100644 > --- a/Documentation/devicetree/bindings/.gitignore > +++ b/Documentation/devicetree/bindings/.gitignore > @@ -1,3 +1,3 @@ > # SPDX-License-Identifier: GPL-2.0-only > *.example.dts > -processed-schema*.yaml > +processed-schema*.yaml* > diff --git a/Documentation/devicetree/bindings/Makefile b/Documentation/devicetree/bindings/Makefile > index 1df680d07461..1c1cad860b7c 100644 > --- a/Documentation/devicetree/bindings/Makefile > +++ b/Documentation/devicetree/bindings/Makefile > @@ -14,7 +14,8 @@ $(obj)/%.example.dts: $(src)/%.yaml 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 = $(file >$@.tmp, $(real-prereqs)) \ > + cat $@.tmp | xargs $(DT_MK_SCHEMA) $(DT_MK_SCHEMA_FLAGS) -o $@ > > DT_DOCS = $(addprefix $(src)/, \ > $(shell \
-- Regards,
Laurent Pinchart
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