Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751080AbdHaJqi convert rfc822-to-8bit (ORCPT ); Thu, 31 Aug 2017 05:46:38 -0400 Received: from mga03.intel.com ([134.134.136.65]:29861 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750884AbdHaJqg (ORCPT ); Thu, 31 Aug 2017 05:46:36 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.41,451,1498546800"; d="scan'208";a="144033867" From: "Reshetova, Elena" To: Julia Lawall CC: "linux-kernel@vger.kernel.org" , "cocci@systeme.lip6.fr" , Gilles Muller , "nicolas.palix@imag.fr" , "mmarek@suse.com" , "keescook@chromium.org" , "ishkamiel@gmail.com" Subject: RE: [PATCH] Coccinelle: add atomic_as_refcounter script Thread-Topic: [PATCH] Coccinelle: add atomic_as_refcounter script Thread-Index: AQHTIVeF5u53e3+ng0CIspTqsU8WoqKcwvIAgAAVnsD///WLAIABaysA Date: Thu, 31 Aug 2017 09:46:32 +0000 Message-ID: <2236FBA76BA1254E88B949DDB74E612B6FF61BBD@IRSMSX102.ger.corp.intel.com> References: <1504073758-16945-1-git-send-email-elena.reshetova@intel.com> <1504073758-16945-2-git-send-email-elena.reshetova@intel.com> <2236FBA76BA1254E88B949DDB74E612B6FF61354@IRSMSX102.ger.corp.intel.com> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: dlp-product: dlpe-windows dlp-version: 11.0.0.116 dlp-reaction: no-action x-originating-ip: [163.33.239.182] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 8BIT MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4791 Lines: 180 > On Wed, 30 Aug 2017, Reshetova, Elena wrote: > > > > > > > > > On Wed, 30 Aug 2017, Elena Reshetova wrote: > > > > > > > atomic_as_refcounter.cocci script allows detecting > > > > cases when refcount_t type and API should be used > > > > instead of atomic_t. > > > > > > > > Signed-off-by: Elena Reshetova > > > > > > Acked-by: Julia Lawall > > > > Thank you very much Julia! What is the correct path to merge this? > > I will resend with your acked-by, but what is the tree that should merge it? > > Marek will take it. If you want to resend, please get rid of the > metavariable y in the rule r1. It causes an unused variable warning. Sure, will do. Thank you! Best Regards, Elena. > > julia > > > > > Best Regards, > > Elena. > > > > > > > --- > > > > scripts/coccinelle/api/atomic_as_refcounter.cocci | 131 > > > ++++++++++++++++++++++ > > > > 1 file changed, 131 insertions(+) > > > > create mode 100644 scripts/coccinelle/api/atomic_as_refcounter.cocci > > > > > > > > diff --git a/scripts/coccinelle/api/atomic_as_refcounter.cocci > > > b/scripts/coccinelle/api/atomic_as_refcounter.cocci > > > > new file mode 100644 > > > > index 0000000..f83771b > > > > --- /dev/null > > > > +++ b/scripts/coccinelle/api/atomic_as_refcounter.cocci > > > > @@ -0,0 +1,131 @@ > > > > +// Check if refcount_t type and API should be used > > > > +// instead of atomic_t type when dealing with refcounters > > > > +// > > > > +// Copyright (c) 2016-2017, Elena Reshetova, Intel Corporation > > > > +// > > > > +// Confidence: Moderate > > > > +// URL: http://coccinelle.lip6.fr/ > > > > +// Options: --include-headers --very-quiet > > > > + > > > > +virtual report > > > > + > > > > +@r1 exists@ > > > > +identifier a, x, y; > > > > +position p1, p2; > > > > +identifier fname =~ ".*free.*"; > > > > +identifier fname2 =~ ".*destroy.*"; > > > > +identifier fname3 =~ ".*del.*"; > > > > +identifier fname4 =~ ".*queue_work.*"; > > > > +identifier fname5 =~ ".*schedule_work.*"; > > > > +identifier fname6 =~ ".*call_rcu.*"; > > > > + > > > > +@@ > > > > + > > > > +( > > > > + atomic_dec_and_test@p1(&(a)->x) > > > > +| > > > > + atomic_dec_and_lock@p1(&(a)->x, ...) > > > > +| > > > > + atomic_long_dec_and_lock@p1(&(a)->x, ...) > > > > +| > > > > + atomic_long_dec_and_test@p1(&(a)->x) > > > > +| > > > > + atomic64_dec_and_test@p1(&(a)->x) > > > > +| > > > > + local_dec_and_test@p1(&(a)->x) > > > > +) > > > > +... > > > > +( > > > > + fname@p2(a, ...); > > > > +| > > > > + fname2@p2(...); > > > > +| > > > > + fname3@p2(...); > > > > +| > > > > + fname4@p2(...); > > > > +| > > > > + fname5@p2(...); > > > > +| > > > > + fname6@p2(...); > > > > +) > > > > + > > > > + > > > > +@script:python depends on report@ > > > > +p1 << r1.p1; > > > > +p2 << r1.p2; > > > > +@@ > > > > +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; > > > > +position p1, p2; > > > > +identifier fname =~ ".*free.*"; > > > > + > > > > +@@ > > > > + > > > > +( > > > > + atomic_dec_and_test@p1(&(a)->x) > > > > +| > > > > + atomic_dec_and_lock@p1(&(a)->x, ...) > > > > +| > > > > + atomic_long_dec_and_lock@p1(&(a)->x, ...) > > > > +| > > > > + atomic_long_dec_and_test@p1(&(a)->x) > > > > +| > > > > + atomic64_dec_and_test@p1(&(a)->x) > > > > +| > > > > + local_dec_and_test@p1(&(a)->x) > > > > +) > > > > +... > > > > +y=a > > > > +... > > > > +fname@p2(y, ...); > > > > + > > > > + > > > > +@script:python depends on report@ > > > > +p1 << r4.p1; > > > > +p2 << r4.p2; > > > > +@@ > > > > +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; > > > > +position p1; > > > > +@@ > > > > + > > > > +( > > > > +atomic_add_unless(&(a)->x,-1,1)@p1 > > > > +| > > > > +atomic_long_add_unless(&(a)->x,-1,1)@p1 > > > > +| > > > > +atomic64_add_unless(&(a)->x,-1,1)@p1 > > > > +) > > > > + > > > > +@script:python depends on report@ > > > > +p1 << r2.p1; > > > > +@@ > > > > +msg = "atomic_add_unless" > > > > +coccilib.report.print_report(p1[0], msg) > > > > + > > > > +@r3 exists@ > > > > +identifier x; > > > > +position p1; > > > > +@@ > > > > + > > > > +( > > > > +x = atomic_add_return@p1(-1, ...); > > > > +| > > > > +x = atomic_long_add_return@p1(-1, ...); > > > > +| > > > > +x = atomic64_add_return@p1(-1, ...); > > > > +) > > > > + > > > > +@script:python depends on report@ > > > > +p1 << r3.p1; > > > > +@@ > > > > +msg = "x = atomic_add_return(-1, ...)" > > > > +coccilib.report.print_report(p1[0], msg) > > > > + > > > > + > > > > -- > > > > 2.7.4 > > > > > > > > > >