[PATCH] kbuild: uapi: Drop check_config()

From: Thomas Weißschuh

Date: Tue Dec 30 2025 - 02:09:41 EST


headers_install.sh already tests for CONFIG symbols. It does so in a
more comprehensive way, by only checking for references in code and
also running even if CONFIG_UAPI_HEADER_TEST is disabled.
And check_config() has been disabled any case.

Drop the pointless check.

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@xxxxxxxxxxxxx>
---
usr/include/headers_check.pl | 8 --------
1 file changed, 8 deletions(-)

diff --git a/usr/include/headers_check.pl b/usr/include/headers_check.pl
index af5a513eaa00..6cd6eb652c8d 100755
--- a/usr/include/headers_check.pl
+++ b/usr/include/headers_check.pl
@@ -40,7 +40,6 @@ foreach my $file (@files) {
&check_include();
&check_asm_types();
&check_declarations();
- # Dropped for now. Too much noise &check_config();
}
close $fh;
}
@@ -77,13 +76,6 @@ sub check_declarations
}
}

-sub check_config
-{
- if ($line =~ m/[^a-zA-Z0-9_]+CONFIG_([a-zA-Z0-9_]+)[^a-zA-Z0-9_]/) {
- printf STDERR "$filename:$lineno: leaks CONFIG_$1 to userspace where it is not valid\n";
- }
-}
-
my $linux_asm_types;
sub check_asm_types
{

---
base-commit: 8f0b4cce4481fb22653697cced8d0d04027cb1e8
change-id: 20251229-uapi-check_config-8aa43e365846

Best regards,
--
Thomas Weißschuh <thomas.weissschuh@xxxxxxxxxxxxx>