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

Pull non-critical part of kbuild from Michal Marek:
 - New semantic patches, make coccicheck M= fix
 - make gtags speedup
 - make tags/TAGS always removes struct forward declarations
 - make deb-pkg fixes (some patches are still pending, I know)
 - scripts/patch-kernel fix from the last user of this script ;)

* 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
  scripts/patch-kernel: digest kernel.org hosted .xz patches
  scripts/coccinelle/api/ptr_ret.cocci: semantic patch for ptr_err
  scripts: refactor remove structure forward declarations
  kbuild: incremental tags update for GNU Global
  coccinelle: semantic patch for bool issues
  coccinelle: semantic patch to check for PTR_ERR after reassignment
  coccinelle: semantic patch converting 0 test to null test
  coccinelle: semantic patch for missing iounmap
  coccinelle: semantic patch for missing clk_put
  kbuild: Fix out-of-tree build for 'make deb-pkg'
  kbuild: Only build linux-image package for UML
  kbuild: Fix link to headers in 'make deb-pkg'
  coccicheck: change handling of C={1,2} when M= is set
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Linus Torvalds committed Mar 31, 2012
2 parents 2b17b43 + 354fa22 commit a7697b9
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Showing 9 changed files with 687 additions and 10 deletions.
70 changes: 70 additions & 0 deletions scripts/coccinelle/api/ptr_ret.cocci
Original file line number Diff line number Diff line change
@@ -0,0 +1,70 @@
///
/// Use PTR_RET rather than if(IS_ERR(...)) + PTR_ERR
///
// Confidence: High
// Copyright: (C) 2012 Julia Lawall, INRIA/LIP6. GPLv2.
// Copyright: (C) 2012 Gilles Muller, INRIA/LiP6. GPLv2.
// URL: http://coccinelle.lip6.fr/
// Options: -no_includes -include_headers
//
// Keywords: ERR_PTR, PTR_ERR, PTR_RET
// Version min: 2.6.39
//

virtual context
virtual patch
virtual org
virtual report

@depends on patch@
expression ptr;
@@

- if (IS_ERR(ptr)) return PTR_ERR(ptr); else return 0;
+ return PTR_RET(ptr);

@depends on patch@
expression ptr;
@@

- if (IS_ERR(ptr)) return PTR_ERR(ptr); return 0;
+ return PTR_RET(ptr);

@r1 depends on !patch@
expression ptr;
position p1;
@@

* if@p1 (IS_ERR(ptr)) return PTR_ERR(ptr); else return 0;

@r2 depends on !patch@
expression ptr;
position p2;
@@

* if@p2 (IS_ERR(ptr)) return PTR_ERR(ptr); return 0;

@script:python depends on org@
p << r1.p1;
@@
coccilib.org.print_todo(p[0], "WARNING: PTR_RET can be used")
@script:python depends on org@
p << r2.p2;
@@
coccilib.org.print_todo(p[0], "WARNING: PTR_RET can be used")
@script:python depends on report@
p << r1.p1;
@@
coccilib.report.print_report(p[0], "WARNING: PTR_RET can be used")
@script:python depends on report@
p << r2.p2;
@@
coccilib.report.print_report(p[0], "WARNING: PTR_RET can be used")
67 changes: 67 additions & 0 deletions scripts/coccinelle/free/clk_put.cocci
Original file line number Diff line number Diff line change
@@ -0,0 +1,67 @@
/// Find missing clk_puts.
///
//# This only signals a missing clk_put when there is a clk_put later
//# in the same function.
//# False positives can be due to loops.
//
// Confidence: Moderate
// Copyright: (C) 2012 Julia Lawall, INRIA/LIP6. GPLv2.
// Copyright: (C) 2012 Gilles Muller, INRIA/LiP6. GPLv2.
// URL: http://coccinelle.lip6.fr/
// Comments:
// Options:

virtual context
virtual org
virtual report

@clk@
expression e;
statement S,S1;
int ret;
position p1,p2,p3;
@@

e = clk_get@p1(...)
... when != clk_put(e)
if (<+...e...+>) S
... when any
when != clk_put(e)
when != if (...) { ... clk_put(e); ... }
(
if (ret == 0) S1
|
if (...)
{ ...
return 0; }
|
if (...)
{ ...
return <+...e...+>; }
|
*if@p2 (...)
{ ... when != clk_put(e)
when forall
return@p3 ...; }
)
... when any
clk_put(e);

@script:python depends on org@
p1 << clk.p1;
p2 << clk.p2;
p3 << clk.p3;
@@
cocci.print_main("clk_get",p1)
cocci.print_secs("if",p2)
cocci.print_secs("needed clk_put",p3)
@script:python depends on report@
p1 << clk.p1;
p2 << clk.p2;
p3 << clk.p3;
@@
msg = "ERROR: missing clk_put; clk_get on line %s and execution via conditional on line %s" % (p1[0].line,p2[0].line)
coccilib.report.print_report(p3[0],msg)
67 changes: 67 additions & 0 deletions scripts/coccinelle/free/iounmap.cocci
Original file line number Diff line number Diff line change
@@ -0,0 +1,67 @@
/// Find missing iounmaps.
///
//# This only signals a missing iounmap when there is an iounmap later
//# in the same function.
//# False positives can be due to loops.
//
// Confidence: Moderate
// Copyright: (C) 2012 Julia Lawall, INRIA/LIP6. GPLv2.
// Copyright: (C) 2012 Gilles Muller, INRIA/LiP6. GPLv2.
// URL: http://coccinelle.lip6.fr/
// Comments:
// Options:

virtual context
virtual org
virtual report

@iom@
expression e;
statement S,S1;
int ret;
position p1,p2,p3;
@@

e = \(ioremap@p1\|ioremap_nocache@p1\)(...)
... when != iounmap(e)
if (<+...e...+>) S
... when any
when != iounmap(e)
when != if (...) { ... iounmap(e); ... }
(
if (ret == 0) S1
|
if (...)
{ ...
return 0; }
|
if (...)
{ ...
return <+...e...+>; }
|
*if@p2 (...)
{ ... when != iounmap(e)
when forall
return@p3 ...; }
)
... when any
iounmap(e);

@script:python depends on org@
p1 << iom.p1;
p2 << iom.p2;
p3 << iom.p3;
@@
cocci.print_main("ioremap",p1)
cocci.print_secs("if",p2)
cocci.print_secs("needed iounmap",p3)
@script:python depends on report@
p1 << iom.p1;
p2 << iom.p2;
p3 << iom.p3;
@@
msg = "ERROR: missing iounmap; ioremap on line %s and execution via conditional on line %s" % (p1[0].line,p2[0].line)
coccilib.report.print_report(p3[0],msg)
178 changes: 178 additions & 0 deletions scripts/coccinelle/misc/boolinit.cocci
Original file line number Diff line number Diff line change
@@ -0,0 +1,178 @@
/// Bool initializations should use true and false. Bool tests don't need
/// comparisons. Based on contributions from Joe Perches, Rusty Russell
/// and Bruce W Allan.
///
// Confidence: High
// Copyright: (C) 2012 Julia Lawall, INRIA/LIP6. GPLv2.
// Copyright: (C) 2012 Gilles Muller, INRIA/LiP6. GPLv2.
// URL: http://coccinelle.lip6.fr/
// Options: -include_headers

virtual patch
virtual context
virtual org
virtual report

@depends on patch@
bool t;
symbol true;
symbol false;
@@

(
- t == true
+ t
|
- true == t
+ t
|
- t != true
+ !t
|
- true != t
+ !t
|
- t == false
+ !t
|
- false == t
+ !t
|
- t != false
+ t
|
- false != t
+ t
)

@depends on patch disable is_zero, isnt_zero@
bool t;
@@

(
- t == 1
+ t
|
- t != 1
+ !t
|
- t == 0
+ !t
|
- t != 0
+ t
)

@depends on patch@
bool b;
@@
(
b =
- 0
+ false
|
b =
- 1
+ true
)

// ---------------------------------------------------------------------

@r1 depends on !patch@
bool t;
position p;
@@

(
* t@p == true
|
* true == t@p
|
* t@p != true
|
* true != t@p
|
* t@p == false
|
* false == t@p
|
* t@p != false
|
* false != t@p
)

@r2 depends on !patch disable is_zero, isnt_zero@
bool t;
position p;
@@

(
* t@p == 1
|
* t@p != 1
|
* t@p == 0
|
* t@p != 0
)

@r3 depends on !patch@
bool b;
position p1,p2;
constant c;
@@
(
*b@p1 = 0
|
*b@p1 = 1
|
*b@p2 = c
)

@script:python depends on org@
p << r1.p;
@@
cocci.print_main("WARNING: Comparison to bool",p)
@script:python depends on org@
p << r2.p;
@@
cocci.print_main("WARNING: Comparison of bool to 0/1",p)
@script:python depends on org@
p1 << r3.p1;
@@
cocci.print_main("WARNING: Assignment of bool to 0/1",p1)
@script:python depends on org@
p2 << r3.p2;
@@
cocci.print_main("ERROR: Assignment of bool to non-0/1 constant",p2)
@script:python depends on report@
p << r1.p;
@@
coccilib.report.print_report(p[0],"WARNING: Comparison to bool")
@script:python depends on report@
p << r2.p;
@@
coccilib.report.print_report(p[0],"WARNING: Comparison of bool to 0/1")
@script:python depends on report@
p1 << r3.p1;
@@
coccilib.report.print_report(p1[0],"WARNING: Assignment of bool to 0/1")
@script:python depends on report@
p2 << r3.p2;
@@
coccilib.report.print_report(p2[0],"ERROR: Assignment of bool to non-0/1 constant")
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