linux-kernel - [PATCH 4/4] Add scripts/coccinelle/resource

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Date:	Mon, 10 May 2010 18:24:27 +0200
From:	Nicolas Palix <npalix@...u.dk>
To:	Randy Dunlap <rdunlap@...otime.net>,
	Roland Dreier <rdreier@...co.com>,
	Joe Perches <joe@...ches.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"David S. Miller" <davem@...emloft.net>,
	Michal Marek <mmarek@...e.cz>, Sam Ravnborg <sam@...nborg.org>,
	Julia Lawall <julia@...u.dk>,
	Gilles Muller <Gilles.Muller@...6.fr>,
	linux-kernel@...r.kernel.org, linux-kbuild@...r.kernel.org,
	cocci@...u.dk, Wolfram Sang <w.sang@...gutronix.de>
Cc:	Kernel Janitors <kernel-janitors@...r.kernel.org>,
	Nicolas Palix <npalix@...u.dk>, Julia Lawall <julia@...u.dk>
Subject: [PATCH 4/4] Add scripts/coccinelle/resource_size.cocci

This semantic patch replaces explicit computations
of resource size by a call to resource_size.

Signed-off-by: Nicolas Palix <npalix@...u.dk>
Signed-off-by: Julia Lawall <julia@...u.dk>
---
 scripts/coccinelle/resource_size.cocci |   94 ++++++++++++++++++++++++++++++++
 1 files changed, 94 insertions(+), 0 deletions(-)
 create mode 100644 scripts/coccinelle/resource_size.cocci

diff --git a/scripts/coccinelle/resource_size.cocci b/scripts/coccinelle/resource_size.cocci
new file mode 100644
index 0000000..a1a007b
--- /dev/null
+++ b/scripts/coccinelle/resource_size.cocci
@@ -0,0 +1,94 @@
+///
+/// Use resource_size function on resource object
+/// instead of explicit computation.
+///
+//  Confidence: High
+//  Copyright: (C) 2009, 2010 Nicolas Palix, DIKU.  GPLv2.
+//  Copyright: (C) 2009, 2010 Julia Lawall, DIKU.  GPLv2.
+//  Copyright: (C) 2009, 2010 Gilles Muller, INRIA/LiP6.  GPLv2.
+//  URL: http://coccinelle.lip6.fr/
+//  Options:
+//
+//  Keywords: resource_size
+//  Version min: 2.6.27 resource_size
+//  Version max: *
+//
+
+virtual context
+virtual patch
+virtual org
+virtual report
+
+//----------------------------------------------------------
+//  For context mode
+//----------------------------------------------------------
+
+@...ontext depends on context && !patch && !org@
+struct resource *res;
+@@
+
+* (res->end - res->start) + 1
+
+//----------------------------------------------------------
+//  For patch mode
+//----------------------------------------------------------
+
+@...atch depends on !context && patch && !org@
+struct resource *res;
+@@
+
+- (res->end - res->start) + 1
++ resource_size(res)
+
+//----------------------------------------------------------
+//  For org mode
+//----------------------------------------------------------
+
+
+@...rg depends on !context && !patch && (org || report)@
+struct resource *res;
+position p;
+@@
+
+ (res->end@p - res->start) + 1
+
+@...d_org depends on !context && !patch && (org || report)@
+struct resource *res;
+position p != r_org.p;
+@@
+
+ res->end@p - res->start
+
+@...ipt:python depends on org@
+p << r_org.p;
+x << r_org.res;
+@@
+
+msg="ERROR with %s" % (x)
+msg_safe=msg.replace("[","@(").replace("]",")")
+coccilib.org.print_todo(p[0], msg_safe)
+
+@...ipt:python depends on report@
+p << r_org.p;
+x << r_org.res;
+@@
+
+msg="ERROR: Missing resource_size with %s" % (x)
+coccilib.report.print_report(p[0], msg)
+
+@...ipt:python depends on org@
+p << rbad_org.p;
+x << rbad_org.res;
+@@
+
+msg="WARNING with %s" % (x)
+msg_safe=msg.replace("[","@(").replace("]",")")
+coccilib.org.print_todo(p[0], msg_safe)
+
+@...ipt:python depends on report@
+p << rbad_org.p;
+x << rbad_org.res;
+@@
+
+msg="WARNING: Suspicious code. resource_size is maybe missing with %s" % (x)
+coccilib.report.print_report(p[0], msg)
-- 
1.7.0.4

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