linux-kernel - [PATCH 05/13] checkpatch: try to catch missing VMLINUX

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Message-Id: <1228674650-24392-6-git-send-email-apw@shadowen.org>
Date:	Sun,  7 Dec 2008 18:30:42 +0000
From:	Andy Whitcroft <apw@...dowen.org>
To:	Andrew Morton <akpm@...l.org>
Cc:	Ingo Molnar <mingo@...e.hu>, linux-kernel@...r.kernel.org,
	Andy Whitcroft <apw@...dowen.org>
Subject: [PATCH 05/13] checkpatch: try to catch missing VMLINUX_SYMBOL() in vmlinux.lds.h

From: Mike Frysinger <vapier@...too.org>

Seems like every other release we have someone who updates vmlinux.lds.h and
adds C-visible symbols without VMLINUX_SYMBOL() around them.  So start
checking the file and reject assignments which have plain symbols on either
side.

[apw@...onical.com: soften the check, add tests]
Signed-off-by: Mike Frysinger <vapier@...too.org>
Signed-off-by: Andy Whitcroft <apw@...onical.com>
---
 scripts/checkpatch.pl |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 5c7fd1a..705a043 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -2224,6 +2224,15 @@ sub process {
 			}
 		}
 
+# make sure symbols are always wrapped with VMLINUX_SYMBOL() ...
+# all assignments may have only one of the following with an assignment:
+#	.
+#	ALIGN(...)
+#	VMLINUX_SYMBOL(...)
+		if ($realfile eq 'vmlinux.lds.h' && $line =~ /(?:(?:^|\s)$Ident\s*=|=\s*$Ident(?:\s|$))/) {
+			WARN("vmlinux.lds.h needs VMLINUX_SYMBOL() around C-visible symbols\n" . $herecurr);
+		}
+
 # check for redundant bracing round if etc
 		if ($line =~ /(^.*)\bif\b/ && $1 !~ /else\s*$/) {
 			my ($level, $endln, @chunks) =
-- 
1.6.0.4.911.gc990

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