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docs: Kconfig/Makefile: add a check for broken ABI files

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The files under Documentation/ABI should follow the syntax
as defined at Documentation/ABI/README.

Allow checking if they're following the syntax by running
the ABI parser script on COMPILE_TEST.

With that, when there's a problem with a file under
Documentation/ABI, it would produce a warning like:

	Warning: file ./Documentation/ABI/testing/sysfs-bus-pci-devices-aer_stats#14:
		What '/sys/bus/pci/devices/<dev>/aer_stats/aer_rootport_total_err_cor' doesn't have a description
	Warning: file ./Documentation/ABI/testing/sysfs-bus-pci-devices-aer_stats#21:
		What '/sys/bus/pci/devices/<dev>/aer_stats/aer_rootport_total_err_fatal' doesn't have a description

Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/57a38de85cb4b548857207cf1fc1bf1ee08613c9.1604042072.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Mauro Carvalho Chehab 2020-10-30 08:40:45 +01:00 committed by Greg Kroah-Hartman
parent 50865d041e
commit 75442fb0cc
4 changed files with 28 additions and 3 deletions
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10
Documentation/Kconfig
View File

@ -10,4 +10,14 @@ config WARN_MISSING_DOCUMENTS
If unsure, select 'N'.
config WARN_ABI_ERRORS
bool "Warn if there are errors at ABI files"
depends on COMPILE_TEST
help
The files under Documentation/ABI should follow what's
described at Documentation/ABI/README. Yet, as they're manually
written, it would be possible that some of those files would
have errors that would break them for being parsed by
scripts/get_abi.pl. Add a check to verify them.
If unsure, select 'N'.

5
Documentation/Makefile
View File

@ -10,6 +10,11 @@ ifeq ($(CONFIG_WARN_MISSING_DOCUMENTS),y)
$(shell $(srctree)/scripts/documentation-file-ref-check --warn)
endif
# Check for broken ABI files
ifeq ($(CONFIG_WARN_ABI_ERRORS),y)
$(shell $(srctree)/scripts/get_abi.pl validate --dir $(srctree)/Documentation/ABI)
endif
# You can set these variables from the command line.
SPHINXBUILD = sphinx-build
SPHINXOPTS =

2
lib/Kconfig.debug
View File

@ -2446,4 +2446,6 @@ config HYPERV_TESTING
endmenu # "Kernel Testing and Coverage"
source "Documentation/Kconfig"
endmenu # Kernel hacking

14
scripts/get_abi.pl
View File

@ -50,7 +50,15 @@ my %symbols;
sub parse_error($$$$) {
my ($file, $ln, $msg, $data) = @_;
print STDERR "file $file#$ln: $msg at\n\t$data";
$data =~ s/\s+$/\n/;
print STDERR "Warning: file $file#$ln:\n\t$msg";
if ($data ne "") {
print STDERR ". Line\n\t\t$data";
} else {
print STDERR "\n";
}
}
#
@ -110,7 +118,7 @@ sub parse_abi {
# Invalid, but it is a common mistake
if ($new_tag eq "where") {
parse_error($file, $ln, "tag 'Where' is invalid. Should be 'What:' instead", $_);
parse_error($file, $ln, "tag 'Where' is invalid. Should be 'What:' instead", "");
$new_tag = "what";
}
@ -225,7 +233,7 @@ sub parse_abi {
}
# Everything else is error
parse_error($file, $ln, "Unexpected line:", $_);
parse_error($file, $ln, "Unexpected content", $_);
}
$data{$nametag}->{description} =~ s/^\n+// if ($data{$nametag}->{description});
if ($what) {