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scripts/coccinelle: improve the coverage of some semantic patches

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This patch ensures that all semantic patches in the scripts/coccinelle
directory provide the report option.  Report messages that include line
numbers now have the line number preceded by "line" for easier subsequent
processing.

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Michal Marek <mmarek@suse.cz>
This commit is contained in:
Julia Lawall
2012-01-14 23:41:54 +01:00
committed by Michal Marek
parent fb3f8af4ff
commit 29a36d4dec
11 changed files with 351 additions and 76 deletions
Download Patch File Download Diff File Expand all files Collapse all files

67
scripts/coccinelle/locks/call_kern.cocci
View File

@@ -1,17 +1,20 @@
/// Find functions that refer to GFP_KERNEL but are called with locks held.
/// The proposed change of converting the GFP_KERNEL is not necessarily the
/// correct one. It may be desired to unlock the lock, or to not call the
/// function under the lock in the first place.
//# The proposed change of converting the GFP_KERNEL is not necessarily the
//# correct one. It may be desired to unlock the lock, or to not call the
//# function under the lock in the first place.
///
// Confidence: Moderate
// Copyright: (C) 2010 Nicolas Palix, DIKU. GPLv2.
// Copyright: (C) 2010 Julia Lawall, DIKU. GPLv2.
// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6. GPLv2.
// Copyright: (C) 2012 Nicolas Palix. GPLv2.
// Copyright: (C) 2012 Julia Lawall, INRIA/LIP6. GPLv2.
// Copyright: (C) 2012 Gilles Muller, INRIA/LiP6. GPLv2.
// URL: http://coccinelle.lip6.fr/
// Comments:
// Options: -no_includes -include_headers
virtual patch
virtual context
virtual org
virtual report
@gfp exists@
identifier fn;
@@ -32,28 +35,29 @@ fn(...) {
... when any
}
@locked@
@locked exists@
identifier gfp.fn;
position p1,p2;
@@
(
read_lock_irq
read_lock_irq@p1
|
write_lock_irq
write_lock_irq@p1
|
read_lock_irqsave
read_lock_irqsave@p1
|
write_lock_irqsave
write_lock_irqsave@p1
|
spin_lock
spin_lock@p1
|
spin_trylock
spin_trylock@p1
|
spin_lock_irq
spin_lock_irq@p1
|
spin_lock_irqsave
spin_lock_irqsave@p1
|
local_irq_disable
local_irq_disable@p1
)
(...)
... when != read_unlock_irq(...)
@@ -64,11 +68,38 @@ local_irq_disable
when != spin_unlock_irq(...)
when != spin_unlock_irqrestore(...)
when != local_irq_enable(...)
fn(...)
fn@p2(...)
@depends on locked@
@depends on locked && patch@
position gfp.p;
@@
- GFP_KERNEL@p
+ GFP_ATOMIC
@depends on locked && !patch@
position gfp.p;
@@
* GFP_KERNEL@p
@script:python depends on !patch && org@
p << gfp.p;
fn << gfp.fn;
p1 << locked.p1;
p2 << locked.p2;
@@
cocci.print_main("lock",p1)
cocci.print_secs("call",p2)
cocci.print_secs("GFP_KERNEL",p)
@script:python depends on !patch && report@
p << gfp.p;
fn << gfp.fn;
p1 << locked.p1;
p2 << locked.p2;
@@
msg = "ERROR: function %s called on line %s inside lock on line %s but uses GFP_KERNEL" % (fn,p2[0].line,p1[0].line)
coccilib.report.print_report(p[0], msg)

12
scripts/coccinelle/locks/flags.cocci
View File

@@ -1,9 +1,9 @@
/// Find nested lock+irqsave functions that use the same flags variables
///
// Confidence: High
// Copyright: (C) 2010 Nicolas Palix, DIKU. GPLv2.
// Copyright: (C) 2010 Julia Lawall, DIKU. GPLv2.
// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6. GPLv2.
// Copyright: (C) 2010-2012 Nicolas Palix. GPLv2.
// Copyright: (C) 2010-2012 Julia Lawall, INRIA/LIP6. GPLv2.
// Copyright: (C) 2010-2012 Gilles Muller, INRIA/LiP6. GPLv2.
// URL: http://coccinelle.lip6.fr/
// Comments:
// Options: -no_includes -include_headers
@@ -12,7 +12,7 @@ virtual context
virtual org
virtual report
@r@
@r exists@
expression lock1,lock2,flags;
position p1,p2;
@@
@@ -39,7 +39,7 @@ read_lock_irqsave@p2(lock2,flags)
write_lock_irqsave@p2(lock2,flags)
)
@d@
@d exists@
expression f <= r.flags;
expression lock1,lock2,flags;
position r.p1, r.p2;
@@ -76,5 +76,5 @@ p1 << r.p1;
p2 << r.p2;
@@
msg="ERROR: nested lock+irqsave that reuses flags from %s." % (p1[0].line)
msg="ERROR: nested lock+irqsave that reuses flags from line %s." % (p1[0].line)
coccilib.report.print_report(p2[0], msg)

15
scripts/coccinelle/locks/mini_lock.cocci
View File

@@ -6,13 +6,14 @@
/// function call that releases the lock.
///
// Confidence: Moderate
// Copyright: (C) 2010 Nicolas Palix, DIKU. GPLv2.
// Copyright: (C) 2010 Julia Lawall, DIKU. GPLv2.
// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6. GPLv2.
// Copyright: (C) 2010-2012 Nicolas Palix. GPLv2.
// Copyright: (C) 2010-2012 Julia Lawall, INRIA/LIP6. GPLv2.
// Copyright: (C) 2010-2012 Gilles Muller, INRIA/LiP6. GPLv2.
// URL: http://coccinelle.lip6.fr/
// Comments:
// Options: -no_includes -include_headers
virtual context
virtual org
virtual report
@@ -57,7 +58,7 @@ position r;
for(...;...;...) { <+... return@r ...; ...+> }
@err@
@err exists@
expression E1;
position prelocked.p;
position up != prelocked.p1;
@@ -65,14 +66,14 @@ position r!=looped.r;
identifier lock,unlock;
@@
lock(E1@p,...);
*lock(E1@p,...);
<+... when != E1
if (...) {
... when != E1
return@r ...;
* return@r ...;
}
...+>
unlock@up(E1,...);
*unlock@up(E1,...);
@script:python depends on org@
p << prelocked.p1;