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Merge branch 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild

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Pull misc kbuild updates from Michal Marek:
 "This is the non-critical part of kbuild for 3.17-rc1:

   - make help hint to use make -s with make kernelrelease et al.
   - moved a kbuild document to Documentation/kbuild where it belongs
   - four new Coccinelle scripts, one dropped and one fixed
   - new make kselftest target to run various tests on the kernel"

* 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
  kbuild: kselftest - new make target to build and run kernel selftests
  Coccinelle: Script to replace if and BUG with BUG_ON
  Coccinelle: Script to detect incorrect argument to sizeof
  Coccinelle: Script to use ARRAY_SIZE instead of division of two sizeofs
  Coccinelle: Script to detect cast after memory allocation
  coccinelle/null: solve parse error
  Documentation: headers_install.txt is part of kbuild
  kbuild: make -s should be used with kernelrelease/kernelversion/image_name
This commit is contained in:
Linus Torvalds
2014-08-14 11:14:29 -06:00
parent 3b7b3e6ec5 5a5da78b3a
commit 899552d6e8
8 changed files with 275 additions and 30 deletions
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72
scripts/coccinelle/api/alloc/alloc_cast.cocci Normal file
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@@ -0,0 +1,72 @@
/// Remove casting the values returned by memory allocation functions
/// like kmalloc, kzalloc, kmem_cache_alloc, kmem_cache_zalloc etc.
///
//# This makes an effort to find cases of casting of values returned by
//# kmalloc, kzalloc, kcalloc, kmem_cache_alloc, kmem_cache_zalloc,
//# kmem_cache_alloc_node, kmalloc_node and kzalloc_node and removes
//# the casting as it is not required. The result in the patch case may
//#need some reformatting.
//
// Confidence: High
// Copyright: 2014, Himangi Saraogi GPLv2.
// Comments:
// Options: --no-includes --include-headers
//
virtual context
virtual patch
virtual org
virtual report
//----------------------------------------------------------
// For context mode
//----------------------------------------------------------
@depends on context@
type T;
@@
* (T *)
\(kmalloc\|kzalloc\|kcalloc\|kmem_cache_alloc\|kmem_cache_zalloc\|
kmem_cache_alloc_node\|kmalloc_node\|kzalloc_node\)(...)
//----------------------------------------------------------
// For patch mode
//----------------------------------------------------------
@depends on patch@
type T;
@@
- (T *)
(\(kmalloc\|kzalloc\|kcalloc\|kmem_cache_alloc\|kmem_cache_zalloc\|
kmem_cache_alloc_node\|kmalloc_node\|kzalloc_node\)(...))
//----------------------------------------------------------
// For org and report mode
//----------------------------------------------------------
@r depends on org || report@
type T;
position p;
@@
(T@p *)\(kmalloc\|kzalloc\|kcalloc\|kmem_cache_alloc\|kmem_cache_zalloc\|
kmem_cache_alloc_node\|kmalloc_node\|kzalloc_node\)(...)
@script:python depends on org@
p << r.p;
t << r.T;
@@
coccilib.org.print_safe_todo(p[0], t)
@script:python depends on report@
p << r.p;
t << r.T;
@@
msg="WARNING: casting value returned by memory allocation function to (%s *) is useless." % (t)
coccilib.report.print_report(p[0], msg)

67
scripts/coccinelle/api/alloc/drop_kmalloc_cast.cocci
View File

@@ -1,67 +0,0 @@
///
/// Casting (void *) value returned by kmalloc is useless
/// as mentioned in Documentation/CodingStyle, Chap 14.
///
// Confidence: High
// Copyright: 2009,2010 Nicolas Palix, DIKU. GPLv2.
// URL: http://coccinelle.lip6.fr/
// Options: --no-includes --include-headers
//
// Keywords: kmalloc, kzalloc, kcalloc
// Version min: < 2.6.12 kmalloc
// Version min: < 2.6.12 kcalloc
// Version min: 2.6.14 kzalloc
//
virtual context
virtual patch
virtual org
virtual report
//----------------------------------------------------------
// For context mode
//----------------------------------------------------------
@depends on context@
type T;
@@
* (T *)
\(kmalloc\|kzalloc\|kcalloc\)(...)
//----------------------------------------------------------
// For patch mode
//----------------------------------------------------------
@depends on patch@
type T;
@@
- (T *)
\(kmalloc\|kzalloc\|kcalloc\)(...)
//----------------------------------------------------------
// For org and report mode
//----------------------------------------------------------
@r depends on org || report@
type T;
position p;
@@
(T@p *)\(kmalloc\|kzalloc\|kcalloc\)(...)
@script:python depends on org@
p << r.p;
t << r.T;
@@
coccilib.org.print_safe_todo(p[0], t)
@script:python depends on report@
p << r.p;
t << r.T;
@@
msg="WARNING: casting value returned by k[cmz]alloc to (%s *) is useless." % (t)
coccilib.report.print_report(p[0], msg)