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
BUG_ON(!irqs_disabled());
- if (data->balance == 0)
- return;
-
if (unlikely(data->balance != 1)) {
kmemcheck_show_all();
kmemcheck_error_save_bug(regs);
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); \
config HAVE_ARCH_KMEMCHECK
bool
+if HAVE_ARCH_KMEMCHECK
+
menuconfig KMEMCHECK
bool "kmemcheck: trap use of uninitialized memory"
depends on DEBUG_KERNEL
accesses where not all the bits are initialized at the same time.
This may also hide some real bugs.
+endif