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authorLinus Torvalds <torvalds@linux-foundation.org>2009-09-22 08:07:54 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-09-22 08:07:54 -0700
commit991d79b0d1255f89267a350b0048eca59f100cbb (patch)
tree65ddf4160f959952d9f4955fda8844374768b83e
parenta87e84b5cdfacf11af4e8a85c4bca9793658536f (diff)
parent181f7c5dd3832763bdf2756b6d2d8a49bdf12791 (diff)
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vegard/kmemcheck
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vegard/kmemcheck: kmemcheck: add missing braces to do-while in kmemcheck_annotate_bitfield kmemcheck: update documentation kmemcheck: depend on HAVE_ARCH_KMEMCHECK kmemcheck: remove useless check kmemcheck: remove duplicated #include
-rw-r--r--Documentation/kmemcheck.txt21
-rw-r--r--arch/x86/mm/kmemcheck/kmemcheck.c3
-rw-r--r--include/linux/kmemcheck.h5
-rw-r--r--lib/Kconfig.kmemcheck3
4 files changed, 8 insertions, 24 deletions
diff --git a/Documentation/kmemcheck.txt b/Documentation/kmemcheck.txt
index 363044609da..c28f82895d6 100644
--- a/Documentation/kmemcheck.txt
+++ b/Documentation/kmemcheck.txt
@@ -43,26 +43,7 @@ feature.
1. Downloading
==============
-kmemcheck can only be downloaded using git. If you want to write patches
-against the current code, you should use the kmemcheck development branch of
-the tip tree. It is also possible to use the linux-next tree, which also
-includes the latest version of kmemcheck.
-
-Assuming that you've already cloned the linux-2.6.git repository, all you
-have to do is add the -tip tree as a remote, like this:
-
- $ git remote add tip git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git
-
-To actually download the tree, fetch the remote:
-
- $ git fetch tip
-
-And to check out a new local branch with the kmemcheck code:
-
- $ git checkout -b kmemcheck tip/kmemcheck
-
-General instructions for the -tip tree can be found here:
-http://people.redhat.com/mingo/tip.git/readme.txt
+As of version 2.6.31-rc1, kmemcheck is included in the mainline kernel.
2. Configuring and compiling
diff --git a/arch/x86/mm/kmemcheck/kmemcheck.c b/arch/x86/mm/kmemcheck/kmemcheck.c
index 528bf954eb7..8cc18334414 100644
--- a/arch/x86/mm/kmemcheck/kmemcheck.c
+++ b/arch/x86/mm/kmemcheck/kmemcheck.c
@@ -225,9 +225,6 @@ void kmemcheck_hide(struct pt_regs *regs)
BUG_ON(!irqs_disabled());
- if (data->balance == 0)
- return;
-
if (unlikely(data->balance != 1)) {
kmemcheck_show_all();
kmemcheck_error_save_bug(regs);
diff --git a/include/linux/kmemcheck.h b/include/linux/kmemcheck.h
index dc2fd545db0..c8006607f94 100644
--- a/include/linux/kmemcheck.h
+++ b/include/linux/kmemcheck.h
@@ -144,7 +144,10 @@ static inline bool kmemcheck_is_obj_initialized(unsigned long addr, size_t size)
int name##_end[0];
#define kmemcheck_annotate_bitfield(ptr, name) \
- do if (ptr) { \
+ do { \
+ if (!ptr) \
+ break; \
+ \
int _n = (long) &((ptr)->name##_end) \
- (long) &((ptr)->name##_begin); \
BUILD_BUG_ON(_n < 0); \
diff --git a/lib/Kconfig.kmemcheck b/lib/Kconfig.kmemcheck
index 603c81b6654..846e039a86b 100644
--- a/lib/Kconfig.kmemcheck
+++ b/lib/Kconfig.kmemcheck
@@ -1,6 +1,8 @@
config HAVE_ARCH_KMEMCHECK
bool
+if HAVE_ARCH_KMEMCHECK
+
menuconfig KMEMCHECK
bool "kmemcheck: trap use of uninitialized memory"
depends on DEBUG_KERNEL
@@ -89,3 +91,4 @@ config KMEMCHECK_BITOPS_OK
accesses where not all the bits are initialized at the same time.
This may also hide some real bugs.
+endif