linux-kernel - [PATCH] scripts: get_abi.pl: make undefined search more deterministic

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Message-Id: <5dc55fd42e632a24a48f95212aa6c6bc4b2d11fd.1632865873.git.mchehab+huawei@kernel.org>
Date:   Tue, 28 Sep 2021 23:51:32 +0200
From:   Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
To:     Linux Doc Mailing List <linux-doc@...r.kernel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
        "Jonathan Corbet" <corbet@....net>, linux-kernel@...r.kernel.org
Subject: [PATCH] scripts: get_abi.pl: make undefined search more deterministic

Sort keys on hashes during undefined search, in order to
make the script more deterministic.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
---
 scripts/get_abi.pl | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/scripts/get_abi.pl b/scripts/get_abi.pl
index 841d889747c0..d32dcd7cca5d 100755
--- a/scripts/get_abi.pl
+++ b/scripts/get_abi.pl
@@ -775,6 +775,8 @@ sub check_undefined_symbols {
 	my $next_i = 0;
 	my $start_time = times;
 
+	@files = sort @files;
+
 	my $last_time = $start_time;
 
 	# When either debug or hint is enabled, there's no sense showing
@@ -909,16 +911,16 @@ sub undefined_symbols {
 		}
 	}
 	# Compile regexes
-	foreach my $l (keys %leaf) {
+	foreach my $l (sort keys %leaf) {
 		my @expr;
-		foreach my $w(split /\xac/, $leaf{$l}->{what}) {
+		foreach my $w(sort split /\xac/, $leaf{$l}->{what}) {
 			push @expr, qr /^$w$/;
 		}
 		$leaf{$l}->{expr} = \@expr;
 	}
 
 	# Take links into account
-	foreach my $link (keys %aliases) {
+	foreach my $link (sort keys %aliases) {
 		my $abs_file = $aliases{$link};
 		graph_add_link($abs_file, $link);
 	}
-- 
2.31.1