checkpatch: prefer __section over __attribute__((section(...)))

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

Link: http://lkml.kernel.org/r/2f374c3c27054b7f978115270d587c624d9962fc.camel@perches.com
Suggested-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Joe Perches <joe@perches.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index d746687..1f85a3a 100755 (executable)
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -5886,6 +5886,18 @@ 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*\)\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/) {