[PATCH] scripts: kernel-doc: Disambiguate origin of warnings

[Kees Cook]

There's no prefix to warnings and errors reported by scripts/kernel-doc
which makes it frustrating to isolate errors reported from CI systems.
Add a "$0: " prefix to all the STDERR output.

Cc: Jonathan Corbet <corbet@xxxxxxx>
Cc: linux-doc@xxxxxxxxxxxxxxx
Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx>
---
 scripts/kernel-doc | 20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/scripts/kernel-doc b/scripts/kernel-doc
index 41f838042364..2a7b975b03e7 100755
--- a/scripts/kernel-doc
+++ b/scripts/kernel-doc
@@ -450,7 +450,7 @@ sub print_lineno {
 sub emit_warning {
     my $location = shift;
     my $msg = shift;
-    print STDERR "$location: warning: $msg";
+    print STDERR "$0: $location: warning: $msg";
     ++$warnings;
 }
 ##
@@ -1292,7 +1292,7 @@ sub dump_struct($$) {
 			   });
     }
     else {
-	print STDERR "${file}:$.: error: Cannot parse struct or union!\n";
+	print STDERR "$0: ${file}:$.: error: Cannot parse struct or union!\n";
 	++$errors;
     }
 }
@@ -1398,7 +1398,7 @@ sub dump_enum($$) {
 			    'purpose' => $declaration_purpose
 			   });
     } else {
-	print STDERR "${file}:$.: error: Cannot parse enum!\n";
+	print STDERR "$0: ${file}:$.: error: Cannot parse enum!\n";
 	++$errors;
     }
 }
@@ -1469,7 +1469,7 @@ sub dump_typedef($$) {
 			   });
     }
     else {
-	print STDERR "${file}:$.: error: Cannot parse typedef!\n";
+	print STDERR "$0: ${file}:$.: error: Cannot parse typedef!\n";
 	++$errors;
     }
 }
@@ -1993,7 +1993,7 @@ sub process_export_file($) {
     my $file = map_filename($orig_file);
 
     if (!open(IN,"<$file")) {
-	print STDERR "Error: Cannot open file $file\n";
+	print STDERR "$0: Error: Cannot open file $file\n";
 	++$errors;
 	return;
     }
@@ -2102,7 +2102,7 @@ sub process_name($$) {
 	}
 
 	if ($verbose) {
-	    print STDERR "${file}:$.: info: Scanning doc for $decl_type $identifier\n";
+	    print STDERR "$0: ${file}:$.: info: Scanning doc for $decl_type $identifier\n";
 	}
     } else {
 	emit_warning("${file}:$.", "Cannot understand $_ on line $. - I thought it was a doc line\n");
@@ -2320,7 +2320,7 @@ sub process_file($) {
     $file = map_filename($orig_file);
 
     if (!open(IN_FILE,"<$file")) {
-	print STDERR "Error: Cannot open file $file\n";
+	print STDERR "$0: Error: Cannot open file $file\n";
 	++$errors;
 	return;
     }
@@ -2410,14 +2410,14 @@ foreach (@ARGV) {
     process_file($_);
 }
 if ($verbose && $errors) {
-  print STDERR "$errors errors\n";
+  print STDERR "$0: $errors errors\n";
 }
 if ($verbose && $warnings) {
-  print STDERR "$warnings warnings\n";
+  print STDERR "$0: $warnings warnings\n";
 }
 
 if ($Werror && $warnings) {
-    print STDERR "$warnings warnings as Errors\n";
+    print STDERR "$0: $warnings warnings as Errors\n";
     exit($warnings);
 } else {
     exit($output_mode eq "none" ? 0 : $errors)
-- 
2.34.1