Re: [PATCH v2 5/5] RDMA/core: Add runchecks.cfg for drivers/infiniband/core

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On Sat, Dec 16, 2017 at 03:42:30PM +0100, Knut Omang wrote:
> Add a runchecks.cfg to drivers/infiniband/core
> to start "reining in" future checker errors,
> and making it easier to selectively clean up existing
> issues.
>
> This runchecks.cfg lets make C=2 M=drivers/infiniband/core
> pass with all errors/warnings suppressed
>
> See Documentation/dev-tools/runchecks.rst for
> motivation and details.
>
> Signed-off-by: Knut Omang <knut.omang@xxxxxxxxxx>
> Reviewed-by: Håkon Bugge <haakon.bugge@xxxxxxxxxx>
> Reviewed-by: Åsmund Østvold <asmund.ostvold@xxxxxxxxxx>
> ---
>  drivers/infiniband/core/runchecks.cfg | 83 ++++++++++++++++++++++++++++-
>  1 file changed, 83 insertions(+)
>  create mode 100644 drivers/infiniband/core/runchecks.cfg
>
> diff --git a/drivers/infiniband/core/runchecks.cfg b/drivers/infiniband/core/runchecks.cfg
> new file mode 100644
> index 0000000..75ca57c
> --- /dev/null
> +++ b/drivers/infiniband/core/runchecks.cfg
> @@ -0,0 +1,83 @@
> +#
> +# checker suppression lists for drivers/infiniband/core
> +#
> +# see Documentation/dev-tools/runchecks.rst
> +#
> +
> +checker checkpatch
> +##################
> +
> +# Accept somewhat longer lines:
> +line_len 110
> +
> +# Uncategorized:
> +#
> +except TRAILING_STATEMENTS packer.c
> +except NON_OCTAL_PERMISSIONS rw.c
> +except STATIC_CONST_CHAR_ARRAY sysfs.c
> +except SYMBOLIC_PERMS sysfs.c
> +except NEEDLESS_IF sysfs.c
> +except NAKED_SSCANF device.c
> +except ALLOC_WITH_MULTIPLY fmr_pool.c iwpm_util.c cma.c
> +except MULTIPLE_ASSIGNMENTS rw.c verbs.c
> +except ALLOC_SIZEOF_STRUCT sysfs.c iwpm_util.c iwpm_msg.c cma.c cm.c iwcm.c
> +except LOGICAL_CONTINUATIONS mad.c iwpm_util.c user_mad.c
> +
> +# Important to fix/go through from a quality perspective:
> +#
> +except AVOID_BUG rw.c mad.c cm.c iwcm.c cma.c
> +except UNCOMMENTED_DEFINITION ucma.c fmr_pool.c multicast.c mad_rmpp.c
> +except UNCOMMENTED_DEFINITION ucm.c umem.c cma.c user_mad.c cm.c
> +except ASSIGN_IN_IF mad.c cma.c uverbs_ioctl_merge.c
> +except SUSPECT_CODE_INDENT iwpm_util.c cma.c uverbs_ioctl.c user_mad.c uverbs_cmd.c
> +except COMPLEX_MACRO uverbs_ioctl_merge.c
> +except BOOL_COMPARISON roce_gid_mgmt.c
> +
> +# Code simplification:
> +#
> +except UNNECESSARY_ELSE cache.c mad.c mad_rmpp.c
> +except UNNECESSARY_PARENTHESES cma.c sa_query.c mad.c ucma.c mad_rmpp.c umem.c
> +except UNNECESSARY_PARENTHESES user_mad.c uverbs_cmd.c uverbs_marshall.c cm.c
> +except EMBEDDED_FUNCTION_NAME mad.c umem.c cma.c ucma.c user_mad.c
> +except RETURN_VOID sysfs.c sa_query.c mad.c cma.c ucm.c uverbs_main.c umem.c
> +except CONSTANT_COMPARISON smi.c
> +except OOM_MESSAGE iwpm_util.c
> +
> +# Style and readability:
> +#
> +except OPEN_BRACE cache.c mad.c umem_odp.c umem_rbtree.c cm.c
> +except MULTILINE_DEREFERENCE mad.c cm.c cma.c uverbs_main.c
> +except LONG_LINE cma.c
> +except PARENTHESIS_ALIGNMENT umem.c cm.c
> +except FUNCTION_ARGUMENTS verbs.c uverbs_cmd.c sa_query.c sysfs.c
> +
> +# Candidates to leave as exceptions (don't fix):
> +except SPACING umem_rbtree.c
> +except MACRO_ARG_REUSE ud_header.c sa_query.c uverbs_ioctl_merge.c
> +
> +# These are in most of the source files, ignore for all files:
> +#
> +pervasive BLOCK_COMMENT_STYLE ENOSYS BRACES OPEN_ENDED_LINE
> +
> +# These are easily autocorrected by checkpatch with --fix-inplace:
> +#
> +pervasive SIZEOF_PARENTHESIS SPACING LINE_SPACING SPACE_BEFORE_TAB TABSTOP
> +pervasive TRAILING_WHITESPACE POINTER_LOCATION INITIALISED_STATIC
> +pervasive CODE_INDENT ELSE_AFTER_BRACE SYMBOLIC_PERMS LEADING_SPACE
> +pervasive PARENTHESIS_ALIGNMENT COMPARISON_TO_NULL TYPO_SPELLING
> +
> +checker sparse
> +##############
> +
> +except SHADOW sysfs.c fmr_pool.c user_mad.c uverbs_main.c ucm.c ucma.c
> +except RETURN_VOID roce_gid_mgmt.c
> +except TYPESIGN ucm.c ucma.c
> +
> +# From linux/device.h:
> +except RETURN_VOID ucm.c
> +
> +checker checkdoc
> +################
> +
> +except PARAM_DESC verbs.c device.c fmr_pool.c cache.c sa_query.c
> +except X_PARAM verbs.c fmr_pool.c cache.c

I missed most of the patches from this series and previous version too,
but in regards to IB. I don't want to see static checkers exceptions for
core code. It does make a lot of sense for drivers which can be unmaintained.

Also, I agree with other reviewers, there is no excuse for adding
checkpatch specifics per-subsystem/folder, the differences are better
to be treated in checkpatch.pl itself.

Thanks

> --
> git-series 0.9.1

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