[PATCH] checkpatch: Prefer __section over __attribute__((section(...)))

From: Joe Perches
Date: Mon Aug 12 2019 - 16:07:31 EST


Add another test for __attribute__((section("foo"))) uses
that should be __section(foo)

Suggested-by: Nick Desaulniers <ndesaulniers@xxxxxxxxxx>
Signed-off-by: Joe Perches <joe@xxxxxxxxxxx>
Tested-by: Nick Desaulniers <ndesaulniers@xxxxxxxxxx> # post PEBKAC <smile>
---
scripts/checkpatch.pl | 12 ++++++++++++
1 file changed, 12 insertions(+)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 1cdacb4fd207..d4153b81b1eb 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -5901,6 +5901,18 @@ sub process {
"__aligned(size) is preferred over __attribute__((aligned(size)))\n" . $herecurr);
}

+# Check for __attribute__ section, prefer __section
+ if ($realfile !~ m@\binclude/uapi/@ &&
+ $line =~ /\b__attribute__\s*\(\s*\(.*_*section_*\s*\(\s*("[^"]*")/) {
+ my $old = substr($rawline, $-[1], $+[1] - $-[1]);
+ my $new = substr($old, 1, -1);
+ if (WARN("PREFER_SECTION",
+ "__section($new) is preferred over __attribute__((section($old)))\n" . $herecurr) &&
+ $fix) {
+ $fixed[$fixlinenr] =~ s/\b__attribute__\s*\(\s*\(\s*_*section_*\s*\(\s*\Q$old\E\s*\)\s*\)/__section($new)/;
+ }
+ }
+
# Check for __attribute__ format(printf, prefer __printf
if ($realfile !~ m@\binclude/uapi/@ &&
$line =~ /\b__attribute__\s*\(\s*\(\s*format\s*\(\s*printf/) {