linux-kernel - [PATCH 3/6] Coccinelle: atomic_as_refcounter: Use type “expression” for another metavariable

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Date:   Tue, 3 Jul 2018 09:40:30 +0200
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     Elena Reshetova <elena.reshetova@...el.com>,
        Julia Lawall <julia.lawall@...6.fr>,
        Kees Cook <keescook@...omium.org>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        kernel-janitors@...r.kernel.org
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Coccinelle <cocci@...teme.lip6.fr>
Subject: [PATCH 3/6] Coccinelle: atomic_as_refcounter: Use type “expression” for another metavariable

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Mon, 2 Jul 2018 17:55:27 +0200

The metavariable “a” is enclosed by parentheses in three rules of
a script for the semantic patch language.
Replace its type by “expression” so that the corresponding source code
search becomes more powerful.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 scripts/coccinelle/api/atomic_as_refcounter.cocci | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/scripts/coccinelle/api/atomic_as_refcounter.cocci b/scripts/coccinelle/api/atomic_as_refcounter.cocci
index 5571eea04c7b..57af2db9463e 100644
--- a/scripts/coccinelle/api/atomic_as_refcounter.cocci
+++ b/scripts/coccinelle/api/atomic_as_refcounter.cocci
@@ -10,7 +10,8 @@
 virtual report
 
 @r1 exists@
-identifier a, x;
+expression a;
+identifier x;
 position p1, p2;
 identifier fname =~ "free";
 identifier fname2 =~ "(?:call_rcu|de(?:l|stroy)|(?:queue|schedule)_work)";
@@ -45,7 +46,8 @@ msg = "atomic_dec_and_test variation before object free at line %s."
 coccilib.report.print_report(p1[0], msg % (p2[0].line))
 
 @r4 exists@
-identifier a, x, y;
+expression a;
+identifier x, y;
 position p1, p2;
 identifier fname =~ "free";
 @@
@@ -77,7 +79,8 @@ msg = "atomic_dec_and_test variation before object free at line %s."
 coccilib.report.print_report(p1[0], msg % (p2[0].line))
 
 @r2 exists@
-identifier a, x;
+expression a;
+identifier x;
 position p1;
 @@
 
-- 
2.18.0