Merge branch 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
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
diff --git a/Documentation/kbuild/00-INDEX b/Documentation/kbuild/00-INDEX
index e8d2b6d..8c5e6aa 100644
--- a/Documentation/kbuild/00-INDEX
+++ b/Documentation/kbuild/00-INDEX
@@ -1,5 +1,7 @@
00-INDEX
- this file: info on the kernel build process
+headers_install.txt
+ - how to export Linux headers for use by userspace
kbuild.txt
- developer information on kbuild
kconfig.txt
diff --git a/Documentation/make/headers_install.txt b/Documentation/kbuild/headers_install.txt
similarity index 100%
rename from Documentation/make/headers_install.txt
rename to Documentation/kbuild/headers_install.txt
diff --git a/Makefile b/Makefile
index ada00f0..6aace67 100644
--- a/Makefile
+++ b/Makefile
@@ -1064,6 +1064,13 @@
$(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst) HDRCHECK=1
# ---------------------------------------------------------------------------
+# Kernel selftest
+
+PHONY += kselftest
+kselftest:
+ $(Q)$(MAKE) -C tools/testing/selftests run_tests
+
+# ---------------------------------------------------------------------------
# Modules
ifdef CONFIG_MODULES
@@ -1250,9 +1257,9 @@
@echo ' tags/TAGS - Generate tags file for editors'
@echo ' cscope - Generate cscope index'
@echo ' gtags - Generate GNU GLOBAL index'
- @echo ' kernelrelease - Output the release version string'
- @echo ' kernelversion - Output the version stored in Makefile'
- @echo ' image_name - Output the image name'
+ @echo ' kernelrelease - Output the release version string (use with make -s)'
+ @echo ' kernelversion - Output the version stored in Makefile (use with make -s)'
+ @echo ' image_name - Output the image name (use with make -s)'
@echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \
echo ' (default: $(INSTALL_HDR_PATH))'; \
echo ''
@@ -1266,6 +1273,11 @@
@echo ' headerdep - Detect inclusion cycles in headers'
@$(MAKE) -f $(srctree)/scripts/Makefile.help checker-help
@echo ''
+ @echo 'Kernel selftest'
+ @echo ' kselftest - Build and run kernel selftest (run as root)'
+ @echo ' Build, install, and boot kernel before'
+ @echo ' running kselftest on it'
+ @echo ''
@echo 'Kernel packaging:'
@$(MAKE) $(build)=$(package-dir) help
@echo ''
diff --git a/scripts/coccinelle/api/alloc/alloc_cast.cocci b/scripts/coccinelle/api/alloc/alloc_cast.cocci
new file mode 100644
index 0000000..6c308ee
--- /dev/null
+++ b/scripts/coccinelle/api/alloc/alloc_cast.cocci
@@ -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)
+
+
diff --git a/scripts/coccinelle/api/alloc/drop_kmalloc_cast.cocci b/scripts/coccinelle/api/alloc/drop_kmalloc_cast.cocci
deleted file mode 100644
index bd5d08b..0000000
--- a/scripts/coccinelle/api/alloc/drop_kmalloc_cast.cocci
+++ /dev/null
@@ -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)
diff --git a/scripts/coccinelle/misc/array_size.cocci b/scripts/coccinelle/misc/array_size.cocci
new file mode 100644
index 0000000..81e279c
--- /dev/null
+++ b/scripts/coccinelle/misc/array_size.cocci
@@ -0,0 +1,87 @@
+/// Use ARRAY_SIZE instead of dividing sizeof array with sizeof an element
+///
+//# This makes an effort to find cases where ARRAY_SIZE can be used such as
+//# where there is a division of sizeof the array by the sizeof its first
+//# element or by any indexed element or the element type. It replaces the
+//# division of the two sizeofs by ARRAY_SIZE.
+//
+// Confidence: High
+// Copyright: (C) 2014 Himangi Saraogi. GPLv2.
+// Comments:
+// Options: --no-includes --include-headers
+
+virtual patch
+virtual context
+virtual org
+virtual report
+
+@i@
+@@
+
+#include <linux/kernel.h>
+
+//----------------------------------------------------------
+// For context mode
+//----------------------------------------------------------
+
+@depends on i&&context@
+type T;
+T[] E;
+@@
+(
+* (sizeof(E)/sizeof(*E))
+|
+* (sizeof(E)/sizeof(E[...]))
+|
+* (sizeof(E)/sizeof(T))
+)
+
+//----------------------------------------------------------
+// For patch mode
+//----------------------------------------------------------
+
+@depends on i&&patch@
+type T;
+T[] E;
+@@
+(
+- (sizeof(E)/sizeof(*E))
++ ARRAY_SIZE(E)
+|
+- (sizeof(E)/sizeof(E[...]))
++ ARRAY_SIZE(E)
+|
+- (sizeof(E)/sizeof(T))
++ ARRAY_SIZE(E)
+)
+
+//----------------------------------------------------------
+// For org and report mode
+//----------------------------------------------------------
+
+@r@
+type T;
+T[] E;
+position p;
+@@
+(
+ (sizeof(E)@p /sizeof(*E))
+|
+ (sizeof(E)@p /sizeof(E[...]))
+|
+ (sizeof(E)@p /sizeof(T))
+)
+
+@script:python depends on i&&org@
+p << r.p;
+@@
+
+coccilib.org.print_todo(p[0], "WARNING should use ARRAY_SIZE")
+
+@script:python depends on i&&report@
+p << r.p;
+@@
+
+msg="WARNING: Use ARRAY_SIZE"
+coccilib.report.print_report(p[0], msg)
+
diff --git a/scripts/coccinelle/misc/badty.cocci b/scripts/coccinelle/misc/badty.cocci
new file mode 100644
index 0000000..2fc06fc
--- /dev/null
+++ b/scripts/coccinelle/misc/badty.cocci
@@ -0,0 +1,76 @@
+/// Use ARRAY_SIZE instead of dividing sizeof array with sizeof an element
+///
+//# This makes an effort to find cases where the argument to sizeof is wrong
+//# in memory allocation functions by checking the type of the allocated memory
+//# when it is a double pointer and ensuring the sizeof argument takes a pointer
+//# to the the memory being allocated. There are false positives in cases the
+//# sizeof argument is not used in constructing the return value. The result
+//# may need some reformatting.
+//
+// Confidence: Moderate
+// Copyright: (C) 2014 Himangi Saraogi. GPLv2.
+// Comments:
+// Options:
+
+virtual patch
+virtual context
+virtual org
+virtual report
+
+//----------------------------------------------------------
+// For context mode
+//----------------------------------------------------------
+
+@depends on context disable sizeof_type_expr@
+type T;
+T **x;
+@@
+
+ x =
+ <+...sizeof(
+* T
+ )...+>
+
+//----------------------------------------------------------
+// For patch mode
+//----------------------------------------------------------
+
+@depends on patch disable sizeof_type_expr@
+type T;
+T **x;
+@@
+
+ x =
+ <+...sizeof(
+- T
++ *x
+ )...+>
+
+//----------------------------------------------------------
+// For org and report mode
+//----------------------------------------------------------
+
+@r disable sizeof_type_expr@
+type T;
+T **x;
+position p;
+@@
+
+ x =
+ <+...sizeof(
+ T@p
+ )...+>
+
+@script:python depends on org@
+p << r.p;
+@@
+
+coccilib.org.print_todo(p[0], "WARNING sizeof argument should be pointer type, not structure type")
+
+@script:python depends on report@
+p << r.p;
+@@
+
+msg="WARNING: Use correct pointer type argument for sizeof"
+coccilib.report.print_report(p[0], msg)
+
diff --git a/scripts/coccinelle/misc/bugon.cocci b/scripts/coccinelle/misc/bugon.cocci
new file mode 100644
index 0000000..556456c
--- /dev/null
+++ b/scripts/coccinelle/misc/bugon.cocci
@@ -0,0 +1,62 @@
+/// Use BUG_ON instead of a if condition followed by BUG.
+///
+//# This makes an effort to find cases where BUG() follows an if
+//# condition on an expression and replaces the if condition and BUG()
+//# with a BUG_ON having the conditional expression of the if statement
+//# as argument.
+//
+// Confidence: High
+// Copyright: (C) 2014 Himangi Saraogi. GPLv2.
+// Comments:
+// Options: --no-includes, --include-headers
+
+virtual patch
+virtual context
+virtual org
+virtual report
+
+//----------------------------------------------------------
+// For context mode
+//----------------------------------------------------------
+
+@depends on context@
+expression e;
+@@
+
+*if (e) BUG();
+
+//----------------------------------------------------------
+// For patch mode
+//----------------------------------------------------------
+
+@depends on patch@
+expression e;
+@@
+
+-if (e) BUG();
++BUG_ON(e);
+
+//----------------------------------------------------------
+// For org and report mode
+//----------------------------------------------------------
+
+@r@
+expression e;
+position p;
+@@
+
+ if (e) BUG@p ();
+
+@script:python depends on org@
+p << r.p;
+@@
+
+coccilib.org.print_todo(p[0], "WARNING use BUG_ON")
+
+@script:python depends on report@
+p << r.p;
+@@
+
+msg="WARNING: Use BUG_ON"
+coccilib.report.print_report(p[0], msg)
+
diff --git a/scripts/coccinelle/null/badzero.cocci b/scripts/coccinelle/null/badzero.cocci
index d79baf7..5551da2 100644
--- a/scripts/coccinelle/null/badzero.cocci
+++ b/scripts/coccinelle/null/badzero.cocci
@@ -10,7 +10,7 @@
// Copyright: (C) 2012 Julia Lawall, INRIA/LIP6. GPLv2.
// Copyright: (C) 2012 Gilles Muller, INRIA/LiP6. GPLv2.
// URL: http://coccinelle.lip6.fr/
-// Comments:
+// Comments: Requires Coccinelle version 1.0.0-rc20 or later
// Options:
virtual patch
@@ -19,6 +19,7 @@
virtual report
@initialize:ocaml@
+@@
let negtable = Hashtbl.create 101
@depends on patch@
